[Technical Field]
[0001] The present invention relates to an aerosol generation device and a non-combustion
suction device.
[Background Art]
[0003] Conventionally, a non-combustion suction device (hereinafter simply referred to as
a suction device) configured to taste a flavor by aspirating steam (for example, an
aerosol) atomized by heating is known. There is a device having an atomization unit
in which atomizable content (for example, an aerosol source) is stored and a power
unit in which a storage battery is mounted as this kind of suction device.
[0004] In the suction device, the heater disposed in the atomization unit generates heat
by the power supplied from the storage battery. Accordingly, the content in the atomization
unit is atomized. A user can suction the atomized aerosol together with the air through
a suction port of the atomization unit.
[0005] For example, in the Patent Document 1 shown below, a configuration that an atomization
unit is attached to a power unit to be attachable to and detachable from the main
body unit by using a rotation connection mechanism is disclosed. According to this
configuration, by detaching the atomization unit from the power unit, a cartridge
accommodation portion formed in a bottomed cylindrical shape of the atomization unit
is exposed, and it is configured that the cartridge storing the aerosol source may
be taken out from the cartridge accommodation portion.
[Citation List]
[Patent Document]
[Summary of Invention]
[Technical Problem]
[0007] However, it is necessary to perform position alignment (phase matching) of the cartridge
with respect to the cartridge accommodation portion at the time of assembling so as
to form electrical contacts with the power unit. According to the prior art described
above, for example at the time of exchanging the cartridge, it is necessary to insert
a new cartridge into the cartridge accommodation portion and perform position alignment,
and then attach the atomization unit to the power unit while keeping this state, the
assembling is complicated. At the time of attaching the atomization unit to the power
unit, there is a risk that a position shift of the cartridge occurs.
[0008] An object of the present invention is to provide an aerosol generation device and
a non-combustion suction device for simplifying the position alignment of the cartridge
with respect to the cartridge accommodation portion and assembling.
[Solution to Problem]
[0009]
- (1) In order to achieve the above object, an aerosol generation device according to
an aspect of the present invention has a cartridge storing an aerosol source; a cartridge
accommodation portion formed in a bottomed cylindrical shape and configured to accommodate
the cartridge; a suction port portion screwed to the cartridge accommodation portion
and in which a suction port for suctioning the aerosol atomized by the aerosol source
is formed; and a position-alignment mechanism configured perform position alignment
of the cartridge with respect to the cartridge accommodation portion by interlocking
with the screwing of the suction port portion with respect to the cartridge accommodation
portion.
According to the present aspect, the position alignment of the cartridge with respect
to the cartridge accommodation portion may be performed simultaneously with the screwing
of the suction port portion with respect to the cartridge accommodation portion. Accordingly,
the position alignment of the cartridge with respect to the cartridge accommodation
portion becomes easy and the complications of the assembling are eliminated. There
is no necessity to rotate the cartridge directly by hands.
- (2) In an aerosol generation device according to the aspect (1), the position-alignment
mechanism may have an engagement protrusion disposed in either of the cartridge or
the cartridge accommodation portion, the engagement protrusion protruding toward the
other of the cartridge or the cartridge accommodation portion in an axial direction
in which a central axis of the cartridge accommodation portion extends; and an engagement
groove disposed in the other of the cartridge or the cartridge accommodation portion
and to which the engagement protrusion is insertable in the axial direction, and the
engagement protrusion and the engagement groove may be formed in the same radius with
the central axis as a center.
According to the present aspect, when the cartridge is relatively rotated with respect
to the cartridge accommodation portion around the central axis, the vertical engagement
convex portion formed in the same radius is inserted into the engagement concave portion
such that the positioning of the cartridge in the circumferential direction is performed.
- (3) In an aerosol generation device according to the above-described aspect (1) or
the aspect (2), the suction port portion may have a cartridge contact portion coming
in contact with the cartridge during a period of being screwed to the cartridge accommodation
portion.
According to the present aspect, the suction port portion enters a state in which
the screw is applied with respect to the cartridge accommodation portion (position
alignment state in the radial direction), and it is possible to prevent the position
shift in the radial direction of the cartridge which rotates together with the suction
port portion.
- (4) In an aerosol generation device according to the above-described aspect (3), the
cartridge contact portion may press the cartridge toward a bottom portion of the cartridge
accommodation portion in a state in which the suction port portion is screwed to the
cartridge accommodation portion.
According to the present aspect, due to the press by the cartridge contact portion,
the position alignment of the cartridge in the axial direction is performed.
- (5) In an aerosol generation device according to the above-described aspect (3) or
aspect (4), the cartridge contact portion may be formed of an elastic resin material.
According to the present aspect, due to the elastic deformation of the cartridge contact
portion, it becomes easy to apply the friction force in the circumferential direction
to cause the cartridge to rotate and apply the pressing force in the axial direction
to press the cartridge.
- (6) In an aerosol generation device according to any one from the above-described
aspect (3) to the aspect (5), an annular protrusion may be formed in an opposite surface
of the cartridge contact portion that is opposite to the cartridge.
According to the present aspect, due to the annual protrusion, the contact of the
cartridge contact portion with respect to the cartridge is not a planar contact such
that the contact pressure increases and the friction force in the circumferential
direction and the pressing force in the axial direction becomes easy to apply.
- (7) In an aerosol generation device according to any one from the above-described
aspect (1) to the aspect (6), a circumferential wall of the cartridge accommodation
portion may be attachable to and detachable from the bottom portion of the cartridge
accommodation portion.
According to the present aspect, maintenance of the position-alignment mechanism disposed
in the bottom portion of the cartridge accommodation portion becomes easy.
- (8) A non-combustion suction device according to an aspect of the present invention
has the aerosol generation device according to any one from the above-described aspect
(1) to the aspect (7); and a flavor source container attached to the suction port
portion of the aerosol generation device.
[0010] According to the present aspect, it is possible to add a flavor to the aerosol passing
through the suction port.
[Advantageous Effects of Invention]
[0011] According to an aspect of the present embodiment, it is possible to simplify position
alignment of the cartridge with respect to the cartridge accommodation portion and
the assembling.
[Brief Description of Drawings]
[0012]
Fig. 1 is a perspective view showing a non-combustion suction device according to
an embodiment.
Fig. 2 is an exploded perspective view showing the non-combustion suction device according
to the embodiment.
Fig. 3 is a cross-sectional view corresponding to line III-III in Fig. 1.
Fig. 4 is an exploded perspective view showing a power unit according to the embodiment.
Fig. 5 is a cross-sectional view corresponding to line V-V in Fig. 1.
Fig. 6 is a perspective view showing the power unit according to the embodiment.
Fig. 7 is a plan view showing the power unit according to the embodiment viewed from
a retaining unit side in an axial direction.
Fig. 8 is an exploded perspective view showing the retaining unit according to the
embodiment.
Fig. 9 is a perspective view showing a connection structure of a first connection
member and a second connection member according to the embodiment.
Fig. 10 is a plan view showing the retaining unit and a cartridge according to the
present embodiment viewed from the power unit side in the axial direction.
Fig. 11 is a cross-sectional view corresponding to line XI-XI in Fig. 1.
Fig. 12 is an exploded perspective view showing a mouthpiece corresponding to line
XII-XII in Fig. 1.
Fig. 13 is a cross-sectional view showing the cartridge according to the present embodiment
along the axial direction.
Fig. 14 is an exploded perspective view showing the cartridge according to the present
embodiment.
Fig. 15 is a perspective view showing the tank according to the present embodiment
viewed from the opening portion side.
Fig. 16 is a perspective view showing a heater retainer according to the present embodiment
viewed from the power unit side.
Fig. 17 is a perspective view showing an atomization container according to the present
embodiment viewed from a mesh body side.
Fig. 18 is a front view showing a suction device according to the present embodiment.
Fig. 19 is a cross-sectional view along the axial direction when the mouthpiece is
detached from the suction device.
Fig. 20 is a descriptive view showing a state when the cartridge climbs over a vertical
engagement convex portion.
Fig. 21 is a descriptive view showing a state of screwing the mouthpiece during the
climb- over state of the cartridge.
Fig. 22 is a descriptive view showing a state when the mouthpiece and the cartridge
are rotated together.
Fig. 23 is a descriptive view showing a state when the mouthpiece is finally tightened.
[Description of Embodiments]
[0013] Hereinafter, an embodiment of the present invention will be described with reference
to figures.
[Suction device]
[0014] Fig. 1 is a perspective view showing a suction device.
[0015] A suction device 1 shown in Fig. 1 is a so-called non-combustion suction device configured
for tasting the flavor of tobacco by inhaling aerosol atomized by heating through
the tobacco.
[0016] The suction device 1 includes a main body unit 10, a tobacco capsule 12, and a cartridge
(also referred to as an atomization unit) 11 attached to the main body unit 10 configured
to be attachable to and detachable from the main body unit 10.
[Main body unit]
[0017] Fig. 2 is an exploded perspective view of the suction device 1.
[0018] As shown in Fig. 2, the main body unit 10 includes a power unit 21, a retention unit
22, and a mouthpiece 23. The power unit 21, the retention unit 22, and the mouthpiece
23 are formed in cylindrical shapes with an axis O as a central axis respectively
and disposed to be arranged on the axis O. In the following description, the direction
along the axis O is described as an axial direction (a normal direction). In this
case, in the axial direction, a side from the mouthpiece 23 toward the power unit
21 can be referred to as an opposite-suction-port side or a first end direction side,
and a side from the power unit 21 toward the mouthpiece 23 can be referred to as a
suction-port side or a second end direction side. A direction intersecting with the
axis O in a plan view seen from the axial direction may be referred to as a radial
direction, and a direction around the axis O may be referred to as a circumferential
direction. In this specification, the recitation "direction" means two directions,
and in a case of indicating one of the "directions", the recitation "side" is disclosed.
[Power unit]
[0019] Fig. 3 is a cross-sectional view corresponding to line III-III in Fig. 1.
[0020] As shown in Fig. 3, the power unit 21 includes a housing 31 and a holder assembly
32 accommodated in the housing 31.
[Holder assembly]
[0021] Fig. 4 is an exploded perspective view showing the power unit 21.
[0022] As shown in Fig. 3 and Fig. 4, a holder assembly 32 is configured by mounting a storage
battery 33, a substrate module (first substrate module 34 and second substrate module
35) and the like on a storage-battery holder 36.
[0023] For example, the storage-battery holder 36 is integrally formed of a resin material.
The storage-battery holder 36 has a base portion 40. The base portion 40 is formed
in a semi-cylindrical shape with the axis O as a central axis. In the base portion
40, if an assembly opening 40a (see Fig. 4) for receiving the storage battery 33 and
the like opens outward in the radial direction, the base portion 40 may be formed
in a shape besides the semi-cylindrical shape.
[0024] In the base portion 40, a press-fit cylindrical portion 41 extends to an end portion
at an opposite side with respect to the retention unit 22 in the axial direction.
The press-fit cylindrical portion 41 is formed in a cylindrical shape with the axis
O as a central axis. In the press-fit cylindrical portion 41, a connector-passage
hole 42 penetrating the press-fit cylindrical portion 41 in the radial direction is
formed in part of the press-fit cylindrical portion 41 in the circumferential direction.
In the press-fit cylindrical portion 41, an opening portion positioned at an opposite
side with respect to the retention unit 22 in the axial direction is blocked by a
blocking portion 43. The blocking portion 43 is formed in a circular shape having
a larger diameter than that of the press-fit cylindrical portion 41.
[0025] A button opening 44 (see Fig. 3) is formed in a part of the base portion 40 positioned
at the retention unit 22 side in the axial direction. The button opening 44 penetrates
part of the base portion 40 in the circumferential direction of the base portion 40
in the radial direction. For example, the above-described connector-passage hole 42
and the button opening 44 are arranged in different positions at 180 degrees in the
circumferential direction. According to the present embodiment, the radial direction
through each center of the connector-passage hole 42 and the button opening 44 arranged
in the circumferential direction is referred to as a front-rear direction. In this
case, the connector-passage hole 42 side with respect to the axis O is referred to
as a rear side, and the button opening 44 side with respect to the axis O is referred
to as a front side. The positions of the connector-passage hole 42 and the button
opening 44 may be suitable changed.
[0026] In the base portion 40, a button-guide tube 45 extending to the rear side is formed
in an opening edge of the button opening 44. The button-guide tube 45 surrounds the
circumference of the button opening 44.
[0027] In the base portion 40, a partition wall 46 configured to partition the base portion
40 in the axial direction is formed in a portion positioned at the opposite side of
the retention unit 22 more than the button opening 44 in the axial direction.
[0028] Fig. 5 is a cross-sectional view corresponding to line V-V in Fig. 1.
[0029] As shown in Fig. 3 to Fig. 5, a step portion 47 communicates with an end portion
positioned at the retention unit 22 side of the base portion 40 in the axial direction.
The step portion 47 is formed in a semi-cylindrical shape to be coaxial with the base
portion 40, and a distance from the axis O in the radial direction gradually decreases
as approaching the retention unit 22 in the axial direction. A connection pedestal
48 communicates with an end edge positioned at the retention unit 22 side in the axial
direction in the step portion 47. The connection pedestal 48 is formed in a circular
shape with the axis O as a central axis. A pair of electrode retainers 50 and a communication
port 51 are formed in the connection pedestal 48.
[0030] As shown in Fig. 4 and Fig. 5, the pair of electrode retainers 50 are formed in tubular
shapes protruding toward the retention unit 22 in the axial direction. The pair of
the electrode retainers 50 are positioned at two sides of the axis O in the radial
direction. According to the present embodiment, the pair of the electrode retainers
50 are arranged in a direction (hereinafter, may be referred to as a left-right direction)
orthogonal to the above-described front-rear direction among the radial directions.
Each electrode retainer 50 extends in the axial direction and is communicated with
each other in the radial direction.
[0031] As shown in Fig. 3 and Fig. 4, the communication port 51 protrudes from a portion
that is positioned at the rear side in the radial direction with respect to the axis
O in the connection pedestal 48 toward the retention unit 22 side in the axial direction.
[0032] As shown in Fig. 5, a pin electrode 49 is individually held by each electrode retainer
50. The pin electrode 49 is configured from a pin-shaped electrode main body that
is elastically supported in a tubular case. The pin electrode 49 is configured that
the electrode main body penetrates the electrode retainer 50 in the axial direction
in a state in which the tubular case is fitted into the electrode retainer 50. In
two end portions of the pin electrode 49 (electrode main body) in the axial direction,
the end portion positioned at the opposite side of the retention unit 22 in the axial
direction is connected to a first substrate 60 via electrode wirings in the storage-battery
holder 36.
[0033] The storage battery 33 is formed in a cylindrical shape with the axis O as the axial
direction. The storage battery 33 is accommodated in a portion in the base portion
40 that is positioned at the opposite side of the retention unit 22 in the axial direction
with respect to the partition wall 46. A power source included in the suction device
1 as a rechargeable and dischargeable power source is not be limited to a secondary
battery such as the storage battery 33 and the like and may be a supercapacitor and
the like. The power source may be a primary battery.
[0034] As shown in Fig. 3 and Fig. 4, the first substrate module 34 is disposed in a part
of the base portion 40 positioned at the retention unit 22 side in the axial direction
with respect to the partition wall 46. More specifically, the first substrate module
34 has a first substrate 60, a switching element 52 (see Fig. 3), and a pressure sensor
53.
[0035] The first substrate 60 is configured to have the front-rear direction as a thickness
direction. More specifically, the first substrate 60 is fixed to the base portion
40 by screws and the like in a state of being placed on an opening end surface of
the assembly opening 40a. The first substrate 60 is connected to the storage battery
33 via a first connection wiring (not shown). In the example shown in Fig. 3, the
first substrate 60 is positioned on the axis O.
[0036] The switching element 52 is disposed at a position overlapping the button opening
44 on a front surface (first principal plane) of the first substrate 60 when viewed
from the front-rear direction. According to the present embodiment, the switching
element 52 is surface mounted on the first substrate 60. However, the switching element
52 may be mounted on the first substrate 60 in a state in which a connection terminal
extending from the switching element 52 is inserted through the penetration hole of
the first substrate 60.
[0037] The pressure sensor 53 is disposed at the retention unit 22 side with respect to
the switching element 52 in the axial direction on a rear surface (second principal
plane) of the first substrate 60. In other words, the pressure sensor 53 is disposed
at a position that does not overlap the switching element 52 in a planar view in the
front-rear direction. According to the present embodiment, the pressure sensor 53
is disposed at the position shifting to the retention unit 22 side in the axial direction
with respect to the switching element 52; however, the configuration is not limited
thereto. In other words, if the switching element 52 and the pressure sensor 53 are
disposed at misaligned positions in the in-plane direction of the first substrate
60, the switching element 52 and the pressure sensor 53 may be disposed at misaligned
positions at the opposite side of the retention unit 22 in the axial direction and
may be disposed at misaligned positions in the left-right direction among the radial
directions.
[0038] The pressure sensor 53 may be configured by adopting an electrostatic capacitance
type sensor for example. In other words, the pressure sensor 53 is configured to detect
behavior of diaphragm deforming in response to pressure change as the change of electrostatic
capacitance. The pressure sensor 53 according to the present embodiment is mounted
on the first substrate 60 in the state in which a connection terminal extending from
the pressure sensor 53 is inserted through the penetration hole of the first substrate
60. However, the pressure sensor 53 may be surface mounted on the first substrate
60.
[0039] A sensor holder 54 is attached to the pressure sensor 53. The sensor holder 54 is
formed of a resin material such as a silicone resin and the like that is softer than
the storage-battery holder 36 and has elasticity. The sensor holder 54 has an attachment
portion 55 being attached to the storage-battery holder 36 and a cover 56 for covering
the pressure sensor 53.
[0040] The attachment portion 55 is formed in a semicircular shape. The attachment portion
55 is assembled to the storage-battery holder 36 in a state of being abut by the above-described
connection pedestal 48 from the opposite side of the retention unit 22 in the axial
direction. A clipping piece 57 (see Fig. 4) is formed in the step portion 47 and configured
to retain the attachment portion 55 in the space between the connection pedestal 48
and the step portion 47 in the axial direction. The clipping piece 57 protrudes from
two end surfaces of a circular arc in the circumferential direction, wherein the circular
arc is positioned at an external side in the radial direction (left-right direction)
of the step portion 47.
[0041] The cover 56 communicates with the attachment portion 55 at the opposite side of
the retention unit 22 in the axial direction. The cover 56 is formed in a cap shape
that opens at the front side. A spacer 56b swelling toward the front side is formed
in a bottom wall portion 56a of the cover 56. The pressure sensor 53 is fitted into
the cover 56 in a state of being abut by the spacer 56a. Accordingly, a gap in the
radial direction is formed between the internal surface of the bottom wall portion
56a and the pressure sensor 53. An air replacement hole 58 penetrating the bottom
wall portion 56a in the radial direction is formed in the bottom wall portion 56a.
[0042] A communication passage 59 communicating the inside of the communication port 51
and the inside of the cover 56 is formed in the above-described attachment portion
55. The communication passage 59 extends along the axial direction in the attachment
portion 55. An end portion of the communication passage 59 at the opposite side of
the retention unit 22 in the axial direction opens on the internal circumferential
surface of the cover 56. On the other hand, an end portion of the communication passage
59 at the retention unit 22 side in the axial direction opens on a surface facing
the retention unit 22 side in the axial direction in the attachment portion 55. According
to the present embodiment, a minimum inner diameter of the communication passage 59
is larger than a maximum inner diameter of the air replacement hole 58. In the communication
passage 59, at least the inner diameter of the end portion at the retention unit 22
side in the axial direction is larger than the inner diameter of the communication
port 51.
[0043] According to the present embodiment, the communication port 51 and the communication
passage 59 are disposed at a position where at least part of the communication port
51 and the communication passage 59 overlaps the pressure sensor 53 when viewed in
the axial direction. However, the communication port 51 and the communication passage
59 may be disposed at a position shifting from the pressure sensor 53 when viewed
in the axial direction.
[0044] As shown in Figs. 3-5, the second substrate module 35 is disposed at the opposite
side of the first substrate module 34 in the axial direction to sandwich the storage
battery 33 therebetween. In other words, the substrate modules 34, 35 according to
the present embodiment are disposed at two sides in the axial direction to sandwich
the storage battery 33 therebetween. The second substrate module 35 has a second substrate
61 and a female connector 62.
[0045] The second substrate 61 is accommodated in the press-fit cylindrical portion 41 having
the radial direction (front-rear direction) as the thickness direction. As shown in
Fig. 5, the second substrate 61 is fixed to a boss portion 41a by screws in a state
of being placed on the boss portion 41a, wherein the boss portion 41a protrudes inwardly
from the press-fit cylindrical portion in the radial direction. The second substrate
61 is connected to the first substrate 60 via a second wiring 61a. In other words,
the second wiring 61a is drawn to pass through the circumference of the storage battery
33 in the axial direction at the external side of the storage-battery holder 36.
[0046] As shown in Figs. 3-4, the female connector 62 is used as a configuration for the
power charge of the storage battery 33, and a male connector (not shown) drawn from
an external power source is inserted into and pulled from the female connector 62.
According to the present embodiment, for example, a USB (Universal Serial Bus) connector
is adopted as the female connector 62. However, the female connector 62 is not limited
to the USB connector. The female connector 62 is not necessary to be used for the
power charge and may be used as a configuration for communication, for example.
[0047] The female connector 62 is implemented on the second substrate 61 in a state in which
the opening portion faces the rear side. A tip end portion (an end portion close to
the opening portion) of the female connector 62 is inserted into the connector-passage
hole 42. However, the female connector 62 may be retracted to the internal side from
the connector-passage hole 42 in the radial direction.
(Housing)
[0048] As shown in Figs. 3-4, the housing 31 has an exterior cylindrical portion 71, an
intervenient member 72, and a connection mechanism 73.
[0049] The exterior cylindrical portion 71 is formed in a cylindrical shape having the axis
O as a central axis. The holder assembly 32 is inserted into the exterior cylindrical
portion 71 through an opening portion positioned at the opposite side of the retention
unit 22 in the axial direction. More specifically, the holder assembly 32 is assembled
to the exterior cylindrical portion 71 in a state in which the press-fit cylindrical
portion 41 of the storage battery 36 is pressed to fit into an end portion of the
exterior cylindrical portion 71 positioned at the opposite side of the retention unit
22. Accordingly, the holder assembly 32 is accommodated into the exterior cylindrical
portion 71 in a state in which an end portion positioned at the retention unit 22
side protrudes from the exterior cylindrical portion 71. An opening portion of the
exterior cylindrical portion 71 positioned at the opposite side of the retention unit
22 in the axial direction is blocked by the blocking portion 43 of the storage-battery
holder 36.
[0050] A connector exposure hole 75 is formed in a portion overlapping the connector-passage
hole 42 and the female connector 62 viewed in the radial direction in the end portion
of the exterior cylindrical portion 71 positioned at the opposite side of the retention
unit 22 in the axial direction. The connector exposure hole 75 penetrates the exterior
cylindrical portion 71 in the radial direction. According to the present embodiment,
a configuration that the female connector 62 opens in the radial direction is described,
the female connector 62 may open in the axial direction.
[0051] A button exposure hole 76 is formed in a portion overlapping the button opening 44
viewed in the radial direction in the end portion of the exterior cylindrical portion
71 at the retention unit 22 side. The button exposure hole 76 penetrates the exterior
cylindrical portion 71 in the radial direction.
[0052] The button 78 is accommodated in the button exposure hole 76 and the button opening
44. The button 78 is configured to be movable in the radial direction in a state of
being supported by the button-guide tube 45. The button 78 operates to press the switch
element 52 while moving inward in the radial direction. A surface of the button 78
is exposed to an external circumferential surface of the exterior cylindrical portion
71 through the button exposure hole 76. The button 78 is not limited to move in the
radial direction, for example, the button 78 may be configured to slide in the axial
direction. A configuration operating the suction device 1 by a touch sensor or the
like instead of the button 78 may be configured.
[0053] The intervenient member 72 is formed in a cylindrical shape with the axis O as a
central axis. The intervenient member 72 is fitted into an interval between the holder
assembly 32 and the exterior cylindrical portion 71 from the retention unit 22 side
in the axial direction. Accordingly, a portion between the holder assembly 32 and
the exterior cylindrical portion 71 is sealed in the opening portion of the exterior
cylindrical portion 71 positioned at the retention unit 22 side in the axial direction.
[0054] As shown in Fig. 3, a space surrounded by the sensor holder 54 in the housing 31
configures a pressure change room S1 in which a pressure changes through the communication
port 51 in response to the usage (suction) of the suction device 1. On the other hand,
in the housing 31, space other than the pressure change room S1 configures a constant
pressure room S2 in which the atmospheric pressure applies. According to the present
embodiment, among the storage battery 33 and the substrate modules 34, 35, the configurations
other than the pressure sensor 53 are accommodated in the constant pressure room S2.
However, if at least the pressure sensor 53 is accommodated in the pressure change
room S1, components other than the pressure sensor 53 may be accommodated in the pressure
change room S1. In the housing 31, a liquid detection seal and the like may be provided
so as to understand infiltration of the liquid.
(Connection mechanism)
[0055] As shown in Fig. 4 and Fig. 5, the connection mechanism 73 has a connection cap 80,
a first connection member 81, and an annular piece 82.
[0056] The connection cap 80 is formed of a resin material being softer than the storage-battery
holder 36 and having elasticity such as the silicone resin and the like. The connection
cap 80 is attached to the connection pedestal 48 from the retention unit 22 side in
the axial direction. The connection cap 80 has a base portion 91, a flange portion
92, and a surrounding convex portion 93.
[0057] As shown in Fig. 5, the base portion 91 is formed in a cylindrical shape having the
axis O as a central axis. In the base portion 91, accommodation concave portions 95
recessed toward the retention unit 22 side in the axial direction are formed in positions
overlapping each electrode retainer 50 in the planar view respectively. Each accommodation
concave portion 95 extends in the axial direction and the accommodation concave portions
95 are communicated in the radial direction. In the base portion 91, an electrode
insertion hole 97 is formed at the position overlapping each accommodation concave
portion 95 in the planar view. The electrode insertion hole 97 penetrates the base
portion 91 in the axial direction and communicates with the inside of the accommodation
concave portion 95.
[0058] As shown in Fig. 3, in the base portion 91, a port insertion hole 99 is formed at
the position overlapping the communication port 51 in the planar view. The port insertion
hole 99 penetrates the base portion 91 in the axial direction.
[0059] As shown in Fig. 3 and Fig. 5, in the connection cap 80, the electrode retainer 50
is accommodated in each accommodation concave portion 95, and the communication port
51 is inserted into the port insertion hole 99. Accordingly, the connection cap 80
is assembled with the storage-battery holder 36 in a state of abutting with an end
surface of the connection pedestal 48 facing the retention unit 22 side in the axial
direction. In such state, the pin electrode 49 protrudes toward the retention unit
22 side in the axial direction from the base portion 91 and through the electrode
insertion hole 97. The communication port 51 protrudes toward the retention unit 22
side in the axial direction from the base portion 91 and through the port insertion
hole 99. In other words, the surface facing the retention unit 22 side in the connection
cap 80 (base portion 91) forms a base surface 91a from which the pin electrode 49
protrudes and where the communication port 51 opens.
[0060] The flange portion 92 expands outwardly in the radial direction in the end portion
of the base portion 91 at the opposite side of the retention unit 22 in the axial
direction.
[0061] The surrounding convex portion 93 protrudes in the axial direction from the end surface
of the base portion 91 facing the retention unit 22 side in the axial direction. More
specifically, the surrounding convex portion 93 is formed in an annular shape extending
along an external circumferential edge of the base portion 91. In other words, the
surrounding convex portion 93 is configured to surround the pin electrode 49 and the
communication port 51 together at a separated position at the external side in the
radial direction with respect to the pin electrode 49 and the communication port 51.
If the surrounding convex portion 93 is the configuration to surround the circumference
of the pin electrode 49 and the communication port 51 together, the surrounding convex
portion 93 may be positioned at an internal side in the radial direction with respect
to the external circumferential edge of the base portion 91. The surrounding convex
portion 93 is not limited to the annular shape and may be formed in a polygonal shape
or the like. According to the present embodiment, the phrase "surrounding" is not
limited to a configuration extending continuously and also includes the configuration
extending intermittently. In other words, the surrounding convex portion 93 according
to the present embodiment may be suitably changed if the surrounding convex portion
93 is the configuration surrounding the circumference of the pin electrode 49 and
the communication port 51 together.
[0062] The surrounding convex portion 93 is formed in a triangle shape having a sharp tip
end toward the retention unit 22 side in the axial direction in a vertical cross-sectional
view along the axial direction. A protrusion height of the surrounding convex portion
93 from the base portion 91 is higher than the communication port 51 and lower than
the pin electrode 49. However, the protrusion height of the surrounding convex portion
93 may be higher than the pin electrode 49. The shape of the surrounding convex portion
93 in the vertical cross-sectional view is not limited to the triangle shape.
[0063] The first connection member 81 has a base cylindrical portion 100, a vertical engagement
convex portion (from first vertical engagement convex portion 101a to third vertical
engagement convex portion 101c), and a horizontal engagement convex portion 102.
[0064] The base cylindrical portion 100 is formed in a multi-stage cylindrical shape having
the axis O as a central axis, and a dimeter decreases by steps toward the retention
unit 22 side in the axial direction. An end portion in the base cylindrical portion
100 positioned at the opposite side of the retention unit 22 in the axial direction
is fitted into the internal side of the intervenient member 72. In this state, an
end portion in the base cylindrical portion 100 at the retention unit 22 side in the
axial direction surrounds the circumference of the connection cap 80 in a state of
sandwiching the flange portion 92 in an interval with the connection pedestal 48 in
the axial direction. An external flange portion 105 expanding outwardly in the radial
direction is formed in the end portion in the base cylindrical portion 100 at the
retention unit 22 side in the axial direction.
[0065] Fig. 6 is a perspective view of the power unit 21.
[0066] As shown in Fig. 5 and Fig. 6, the vertical engagement convex portions 101a-101c
protrude toward the retention unit 22 side in the axial direction from the base cylindrical
portion 100. A plurality of the vertical engagement convex portions 101a-101c are
formed to be separated at intervals in the circumferential direction. According to
the present embodiment, each of the vertical engagement convex portions 101a-101c
are evenly disposed in the circumferential direction by a 120-degree interval. The
vertical engagement convex portions 101a-101c may be single or multiple. A pitch of
the vertical engagement convex portions 101a-101c may be suitably changed. In this
case, the multiple vertical engagement convex portions 101a-101c may be unevenly disposed.
[0067] Fig. 7 is a planar view showing the power unit 21 viewed from the retention unit
22 side.
[0068] As shown in Fig. 7, each of the vertical engagement convex portions 101a-101c is
disposed so as to cause the pin electrode 49 not to be disposed on virtual straight
lines La-Lc connecting the center in the circumferential direction of each vertical
engagement convex portion 101a-101c and the axis O. More specifically, the pin electrodes
49 are disposed at positions being line symmetry with respect to the virtual straight
line La connecting the first vertical engagement convex portion 101a and the axis
O. In other words, a virtual straight line T1 connecting each pin electrode 49 is
orthogonal to the virtual straight line La and distances from the virtual straight
line La to each pin electrode 49 are the same as each other.
[0069] As shown in Fig. 5 and Fig. 6, an end edge in each vertical engagement convex portion
101a-101c positioned at the retention unit 22 side in the axial direction is positioned
at the retention unit 22 side in the axial direction more than the pin electrode 49.
Each vertical engagement convex portion 101a-101c is formed in a rectangle shape in
a side view from the radial direction respectively. In an end portion at the retention
unit 22 side in the axial direction in each vertical engagement convex portion 101a-101c,
a surface facing the internal side in the radial direction is formed as an inclined
surface whose thickness in the radial direction gradually becomes thinner toward the
retention unit 22 side in the axial direction. The inclined surface functions as a
guide for smoothly guiding each vertical engagement convex portion 101a-101c to an
engagement concave portion 210 of the cartridge 11 described below.
[0070] The horizontal engagement convex portion 102 protrudes outwardly in the radial direction
from the external flange portion 105. The horizontal engagement convex portion 102
is formed in a rectangle shape in the planar view. A plurality of the horizontal engagement
convex portions 102 are formed to be separated by intervals in the circumferential
direction. According to the present embodiment, each of the horizontal engagement
convex portions 102 is evenly disposed in the circumferential direction by a 90-degree
interval. According to the present embodiment, a single horizontal engagement convex
portion 102 is disposed at the same position with the first vertical engagement convex
portion 101a in the circumferential direction. The horizontal engagement convex portion
102 may be single or multiple. A pitch of the horizontal engagement convex portions
102 may be suitably changed. In this case, multiple horizontal engagement convex portions
102 may be unevenly disposed.
[0071] The annular piece 82 is formed in a thin annular shape. The base cylindrical portion
100 is inserted into the annular piece 82 from the retention unit 22 side in the axial
direction such that the annular piece 82 is clipped between the intervenient member
72 and the external flange portion 105 in the axial direction. As shown in Fig. 5,
a bending portion 106 is formed in a portion of the annular piece 82 in the circumferential
direction. The bending portion 106 is formed in an arch shape expanding outwardly
in the radial direction. The bending portion 106 is configured to be elastically deformable
in the radial direction. The bending portion 106 is positioned at the internal side
in the radial direction more than an external end surface of the horizontal engagement
convex portion 102.
[0072] A plurality of the bending portions 106 are formed to be separated by intervals in
the circumferential direction. For example, the bending portions 106 are disposed
at the same positions in the circumferential direction of a pair of horizontal engagement
convex portions 102 that are opposed with each other in the radial direction (left-right
direction) among the horizontal engagement convex portions 102. However, a number
of the bending portions 106 may be suitably changed. For example, the bending portion
106 may be formed corresponding to each horizontal engagement convex portion 102,
or the bending portion 106 may be formed corresponding to only one horizontal engagement
convex portion 102.
(Retention unit)
[0073] Fig. 8 is an exploded perspective view of the retention unit 22.
[0074] As shown in Fig. 8, the retention unit 22 is attached to the main body unit 10 so
as to be attachable to and detachable from the main body unit 10. More specifically,
the retention unit 22 has a container-retaining cylinder 120, a transmission cylinder
121, a second connection member 122, and a sleeve 123.
[0075] The container-retaining cylinder 120 is formed in a cylindrical shape with the axis
O as a central axis. An observation hole 130 is formed in a central portion of the
container-retaining cylinder 120 in the axial direction. The observation hole 130
penetrates the container-retaining cylinder 120 in the radial direction. The observation
hole 130 is formed in an oval shape with the axial direction as a longitudinal direction.
The observation hole 130 is formed in a portion of the container-retaining cylinder
120 being opposed with each other in the radial direction. A number, a position, a
shape and the like of the observation hole 130 may be suitably changed.
[0076] A ventilation hole 131 is formed in a portion of the container-retaining cylinder
120 positioned at the power unit 21 side in the axial direction more than the observation
hole 130. The ventilation hole 131 penetrates the container-retaining cylinder 120
in the radial direction. The ventilation hole 131 causes the inside and outside of
the retention unit 22 to be communicated with each other. The ventilation hole 131
is formed in a portion of the container-retaining cylinder 120 being opposed with
each other in the radial direction (front-rear direction). A number, a position, a
shape and the like of the ventilation hole 131 may be suitably changed.
[0077] The transmission cylinder 121 is formed of a material having optical transparency.
The transmission cylinder 121 is inserted into the container-retaining cylinder 120.
More specifically, the transmission cylinder 121 is positioned at the mouthpiece 23
side in the axial direction more than the ventilation hole 131 in the container-retaining
cylinder 120 to cover the observation hole 130 from the internal side in the radial
direction. In other words, the user can visually recognize the inside of the retention
unit 22 through the observation hole 130 and the transmission cylinder 121. The retention
unit 22 may be configured without the observation hole 130 and the transmission cylinder
121.
[0078] The second connection member 122 is locked by the first connection member 81 at the
time of attaching the retention unit 22 to the main body unit 10. More specifically,
the second connection member 122 has a fitting cylinder 140, a guide cylinder 141,
and a locking piece 142.
[0079] The fitting cylinder 140 is formed in a cylindrical shape with the axis O as a central
axis. The fitting cylinder 140 is fitted into a portion of the container-retaining
cylinder 120 positioned at the power unit 21 side in the axial direction more than
the transmission cylinder 121 by press fitting or the like.
[0080] The guide cylinder 141 is disposed to be coaxial with the fitting cylinder 140. The
guide cylinder 141 extends to the mouthpiece 23 side in the axial direction from the
fitting cylinder 140. The guide cylinder 141 is formed in a tapered cylindrical shape
whose internal diameter gradually increases toward the mouthpiece 23 side in the axial
direction. An external diameter of the guide cylinder 141 is smaller than an external
diameter of the fitting cylinder 140. In the guide cylinder 141, a clearance portion
145 is formed at a position overlapping the ventilation hole 131 in a side view viewed
from the radial direction. For example, the clearance portion 145 is formed in a U
shape having an opening at the mouthpiece 23 side in the axial direction. The ventilation
hole 131 opens to the inside of the retention unit 22 through the clearance portion
145. The shape of the clearance portion 145 only has to be configured to cause at
least part of the ventilation hole 131 to be exposed in the retention unit 22. In
a case in which the guide cylinder 141 and the ventilation hole 131 are disposed in
different positions in the axial direction, the guide cylinder 141 may be configured
without the clearance portion 145.
[0081] Fig. 9 is a perspective view showing a connection structure of the first connection
member 81 and the second connection member 122.
[0082] As shown in Fig. 8 and Fig. 9, the locking piece 142 protrudes toward the power unit
21 side in the axial direction from the fitting cylinder 140. The locking piece 142
is formed in a L shape in a side view viewed from the radial direction. More specifically,
the locking piece 142 has a vertical extending portion 150 and a horizontal extending
portion 151.
[0083] The vertical extending portion 150 protrudes toward the power unit 21 side in the
axial direction from the fitting cylinder 140.
[0084] As shown in Fig. 9, the horizontal extending portion 151 extends from an end portion
of the vertical extending portion 150 at the power unit 21 side toward one side only
in the circumferential direction.
[0085] Fig. 10 is a planar view of the retention unit 22 and the cartridge 11 viewed from
the power unit 21 side in the axial direction.
[0086] As shown in Fig. 9 and Fig. 10, in the horizontal extending portion 151, an engagement
concave portion 155 recessed toward the external side in the radial direction is formed
in the end portion at the one side of the circumferential direction. The engagement
concave portion 155 is formed in a semicircular shape toward the external side in
the radial direction.
[0087] A plurality of the locking pieces 142 are formed to be separated by intervals in
the circumferential direction. According to the present embodiment, each of the locking
pieces 142 is evenly disposed in the circumferential direction by a 90-degree interval.
Between two adjacent locking pieces 142 in the circumferential direction, an engagement
groove 158 is formed for the horizontal engagement convex portion 102 to be inserted.
The engagement groove 158 is formed in an L shape in the side view.
[0088] As shown in Fig. 2 and Fig. 9, the power unit 21 and the retention unit 22 are configured
to be attachable and detachable by connecting the locking piece 142 and the horizontal
engagement convex portion 102. In other words, in order to connect the power unit
21 and the retention unit 22, the horizontal engagement concave portion 102 is inserted
into the engagement groove 158 in the axial direction, and then the power unit 21
and the retention unit 22 are relatively rotated around the axis O. Accordingly, the
horizontal engagement concave portion 102 is engaged between the horizontal extending
portion 151 and the fitting cylinder 140 in the axial direction. During the procedure
when the power unit 21 and the retention unit 22 are relatively rotated around the
axis O, the bending portion 106 of the annular piece 82 are fitted into the engagement
concave portion 155. Accordingly, the bending portion 106 is engaged with the engagement
concave portion 155 in the circumferential direction. As a result, the power unit
21 and the retention unit 22 are assembled with each other in a state in which position
alignment in the axial direction and the circumferential direction is finished.
[0089] As shown in Fig. 9, in the engagement groove 158 according to the present embodiment,
a portion between the fitting cylinder 140 and the horizontal extending portion 151
is formed in a tapered shape with a width in the axial direction that gradually becomes
narrower from the other side toward the one side in the circumferential direction.
More specifically, an end surface of the horizontal extending portion 151 facing the
mouthpiece 23 side in the axial direction is formed in an inclined surface extending
toward the power unit 21 side in the axial direction from the other side toward the
one side in the circumferential direction.
[0090] The horizontal engagement convex portion 102 is formed in a tapered shape with a
width in the axial direction that gradually becomes narrower from the other side toward
the one side in the circumferential direction. More specifically, an end surface of
the horizontal engagement convex portion 102 facing the opposite side of the retention
unit 22 in the axial direction is formed in an inclined surface extending to the mouthpiece
23 side in the axial direction from the one side toward the other side in the circumferential
direction. Accordingly, it is possible to prevent interference of the horizontal extending
portion 151 and the horizontal engagement convex portion 102 and improve the assembling
workability at the time of connecting the power unit 21 with the retention unit 22.
[0091] As shown in Fig. 8, the sleeve 123 is fitted into part of the container-retaining
cylinder 120 that is positioned at the mouthpiece 23 side more than the transmission
cylinder 121 in the axial direction by being pressed or the like. The transmission
cylinder 121 is held in the axial direction between the second connection member 122
and the sleeve 123. A female screw portion 123a is formed on an internal circumferential
surface of the sleeve 123.
(Mouthpiece)
[0092] Fig. 11 is a cross-sectional view along line XI-XI in Fig. 1. Fig. 12 is an exploded
perspective view of the mouthpiece 23 corresponding to line XII-XII in Fig. 1.
[0093] As shown in Fig. 11 and Fig. 12, the mouthpiece 23 has a mouthpiece main body 160
and a slip prevention member (first slip prevention member 161 and second slip prevention
member 162).
[0094] A suction port 23a being capable of accommodating the tobacco capsule 12 is formed
in the mouthpiece 23. The mouthpiece main body 160 is formed in a multi-stage cylindrical
shape with the axis O as a central axis. A male screw portion 160a is formed in an
end portion of the mouthpiece main body 160 at the retention unit 22 side in the axial
direction. The male screw portion 160a of the mouthpiece main body 160 is screwed
to the female screw portion 123a of the sleeve 123 to be attachable thereto and detachable
therefrom. The mouthpiece main body 160 may be a configuration attaching to or detaching
from the sleeve 123 by a method besides the screwing (for example, fitting or the
like).
[0095] In the mouthpiece main body 160, an abutting flange 165 is formed in a portion positioned
at the opposite side of the retention unit 22 in the axial direction with respect
to the male screw portion 160a. The abutting flange 165 is formed in an annular shape
extending outwardly in the radial direction. The abutting flange abuts on the retention
unit 22 in the axial direction in a state in which the mouthpiece 23 is attached to
the retention unit 22. The abutting flange 165 is configured such that an external
diameter of the abutting flange 165 gradually decreases away from the retention unit
22 in the axial direction.
[0096] A partitioning portion 167 configured to partition the inside of the mouthpiece main
body 160 in the axial direction is formed in an end portion of the mouthpiece main
body 160 at the retention unit 22 side in the axial direction. In the partitioning
portion 167, a penetration hole 168 penetrating the partitioning portion 167 is formed
at a position overlapping the axis O. For example, the penetration hole 168 is formed
in an oval shape having one direction of the radial direction as a longitudinal direction.
A shape of the penetration hole 168 in a planar view may be a perfect circle shape,
a polygonal shape or the like.
[0097] For example, the first slip prevention member 161 is integrally formed of a resin
material such as a silicone resin or the like. The first slip prevention member 161
has a ring portion 169, a fitting protrusion 170, and an engagement protrusion 171.
[0098] The ring portion 169 is fitted in the mouthpiece main body 160 from the retention
unit 22 side in the axial direction. Position alignment of the first slip prevention
member 161 in the axial direction with respect to the mouthpiece main body 160 is
performed by the ring portion 169 abutting the partitioning portion 167 in the axial
direction.
[0099] A communication hole 169a is formed in a center of the ring portion 169. The communication
hole 169a is formed to cause the inside of the retention unit 22 and the inside of
the mouthpiece main body 160 to be communicated via the penetration hole 168.
[0100] A pair of the fitting protrusions 170 are formed at positions facing each other in
the radial direction and sandwiching the communication hole 169a therebetween in the
internal circumferential edge of the ring portion 169. The fitting protrusions 170
protrude toward the opposite side of the retention unit 22 in the axial direction
from the ring portion 169. Each of the fitting protrusions 170 is fitted to two end
portions of the penetration hole 168 in the radial direction. Accordingly, position
alignment of the first slip prevention member 161 with the mouthpiece main body 160
in the circumferential direction is performed. According to the present embodiment,
the configuration that the fitting protrusions 170 are fitted into the penetration
hole 168 is described; however, a configuration that the fitting protrusions 170 are
fitted into other hole besides the penetration hole 168 may be configured.
[0101] The engagement protrusion 171 protrudes toward the retention unit 22 side in the
axial direction from the ring portion 169. The engagement protrusion 171 is formed
in a circular shape having the axis O as a center. According to the present embodiment,
two of the engagement protrusions 171 are formed in a concentric circular shape. The
first slip prevention member 161 may be a configuration without the engagement protrusion
171.
[0102] For example, the second slip prevention member 162 is integrally formed of the resin
material such as the silicone resin or the like. The second slip prevention member
162 is fitted into the mouthpiece main body 160 from the opposite side of the retention
unit 22 in the axial direction. The position alignment of the second slip prevention
member 162 with respect to the mouthpiece main body 160 in the axial direction is
performed by being abutted by the partitioning portion 167 in the axial direction.
(Tobacco capsule)
[0103] As shown in Fig. 2 and Fig. 11, the tobacco capsule 12 is attached into the mouthpiece
main body 160 from the opposite side of the retention unit 22 in the axial direction
so as to be attachable thereto and detachable therefrom. The tobacco capsule 12 has
a capsule portion 180 and a filter portion 181.
[0104] As shown in Fig. 11, the capsule portion 180 is formed in a bottomed cylindrical
shape having the axis O as a central axis. In the capsule portion 180, in a bottom
wall portion 186 for blocking an opening portion at the retention unit 22 side in
the axial direction, a mesh opening penetrating the bottom wall portion 186 in the
axial direction is formed.
[0105] The filter portion 181 is fitted into the capsule portion 180 from the opposite side
of the retention unit 22 in the axial direction. Tobacco is sealed in a space formed
by the capsule portion 180 and the filter portion 181.
(Cartridge)
[0106] As shown in Fig. 2, the cartridge 11 is configured to store the liquid aerosol source
while atomizing the liquid aerosol source. The cartridge 11 is accommodated in the
transmission cylinder 121 of the retention unit 22.
[0107] Fig. 13 is a cross-sectional view of the cartridge 11 along the axial direction.
Fig. 14 is an exploded perspective view of the cartridge 11.
[0108] As shown in Fig. 13 and Fig. 14, the cartridge 11 has a tank 191 formed in a bottomed
cylindrical shape, a gasket (also referred to as a support member) 192 formed in a
substantially disc shape and accommodated in the tank 191, a mesh body (also referred
to as a partition plate) 193 formed in a substantially disc shape, a heater 194, an
atomization container (also referred to as a container) 195, and a heater holder 196
configured to block an opening portion 191a of the tank 191.
[0109] Fig. 15 is a perspective view of the tank 191 viewed from the opening portion 191a
side.
[0110] As shown in Fig. 13 to Fig. 15, two engagement holes 198 are formed at a slightly
bottom portion 191c side more than the opening portion 191a in a circumferential wall
191b of the tank 191. The engagement hole 198 is configured for fixing the heater
holder 196 to the tank 191. The engagement hole 198 is formed in a rectangle shape
viewed from the radial direction to become long in the circumferential direction.
The two engagement holes 198 are disposed to be opposite to each other and to sandwich
an axis Q of the tank 191 at two side of the axis Q. The axis Q coincides with the
axis O of the main body unit 10 in a state in which the cartridge 11 is accommodated
in the transmission cylinder 121. The axis Q is the common axis of each portion configuring
the cartridge 11. Hereinafter, the axis Q is not only described as the axis Q of the
tank 191, but also used in the description of each portion configuring the cartridge
11.
[0111] A guide concave portion 198a is formed on an internal circumferential surface slightly
close to the opening portion 191a from the engagement hole 198 in the circumferential
wall 191b of the tank 191. The guide concave portion 198a also opens at the opening
portion 191a side. The guide concave portion 198a functions to guide an engagement
piece 206 described below when fixing the heater holder 196 to the tank 191.
[0112] In the bottom portion 191c of the tank 191, a penetration hole 191d penetrating the
bottom portion 191c at the center in the radial direction is formed. A flow passage
tube (also referred to a flow path) 197 is formed in an annular shape and integrally
formed in a circumferential edge of the penetration hole 191d to protrude from the
internal surface of the bottom portion 191c to the inside of the tank 191. Accordingly,
the inside of the flow passage tube 197 and the penetration hole 191d are communicated
with each other. The flow passage tube 197 is a flow passage of the atomized aerosol.
The flow passage tube 197 extends in a space from the bottom portion 191c to a position
slightly close to the opening portion 191a with respect to a substantially center
in the axial direction of the tank 191.
[0113] Between the internal circumferential surface of the circumferential wall 191b and
an external circumferential surface of the flow passage tube 197, a plurality of ribs
199 (three according to the present embodiment) across the circumferential surface
191b and the flow passage 197 are integrally formed. The plurality of ribs 199 are
disposed at equal intervals in the circumferential direction so as to be in a radial
pattern viewed from the axial direction. The plurality of ribs 199 extend in a space
from the bottom portion 191c of the tank 191 to a position slightly in front of an
end portion (tip end) at the opening portion 191a side of the flow passage tube 197.
The plurality of ribs 199 are configured to support the flow passage tube 197.
[0114] In the internal circumferential surface of the circumferential wall 191b, a convex
portion 201 is integrally formed at the position where the ribs 199 are formed. The
convex portion 201 extends along the ribs 199 in the axial direction. The convex portion
201 is formed in a space from the bottom portion 191c of the tank 191 to a position
between an end portion (tip end) at the opening portion 191a side of the rib 199 and
a tip end of the flow passage tube 197. The convex portion 201 functions to enhance
a mechanical strength of the tank 191 while performing position alignment of the gasket
192.
[0115] The gasket 192 is formed to have an external diameter substantially the same as the
internal diameter of the tank 191. The gasket 192 is configured to perform position
alignment of the mesh body 193 described below while maintaining an orientation of
the mesh body 193. In other words, the gasket 192 supports the mesh body 193 described
below. An insertion hole 192a capable of being inserted by the flow passage tube 197
is formed in a center in the radial direction of the gasket 192. The gasket 192 is
accommodated in the tank 191 such that the flow passage tube 197 is inserted into
the insertion hole 192a. A surface 192b is abutted by the end surface 201a of the
convex portion 201 such that position alignment of the gasket 192 in the tank 191
is performed. In the state in which the position alignment of the gasket 192 is performed,
an external circumferential surface of the gasket 192 comes in contact with the internal
circumferential surface of the tank 191. The insertion hole 192a of the gasket 192
comes in contact with the external circumferential surface of the flow passage tube
197.
[0116] A plurality of opening portions 192c (four according to the present embodiment) are
formed in a major portion between the insertion hole 192a and the external circumferential
surface of the gasket 192. The opening portion 192c is formed in an arc shape viewed
from the axial direction. The plurality of opening portions 192c are formed by equal
intervals in the circumferential direction. Two side sandwiching the gasket 192 in
the tank 191 are communicated with each other via the opening portion 192c. The mesh
body 193 is disposed on another surface 192d at the opposite side of the surface 192b
of the gasket 192.
[0117] The mesh body 193 is a porous member having liquid absorbency. The mesh body 193
is formed of a cotton type fibrous material, for example. The mesh body 193 and the
gasket 192 are formed in almost the same shape. In other words, the mesh body 193
is formed to have an external diameter substantially the same as the internal diameter
of the tank 191. An insertion hole 193a into which the flow passage tube 197 is insertable
is formed in a center in the radial direction of the mesh body 193. The flow passage
tube 197 is inserted into the insertion hole 193a and a surface 193b of the mesh body
193 overlaps the other surface 192d of the gasket 192 such that position alignment
of the mesh body 193 is performed. An external circumferential surface of the mesh
body 193 comes in contact with the internal circumferential surface of the tank 191.
The insertion hole 193a of the mesh body 193 comes in contact with the external circumferential
surface of the flow passage tube 197.
[0118] The inside of the tank 191 is partitioned into a liquid storage room 202 at the bottom
portion 191 side and an opening room 203 at the opening portion 191a side by the mesh
body 193. The liquid aerosol source is stored in the liquid storage room 202. The
opening room 203 is a room for atomizing the aerosol source suctioned by the mesh
body 193.
[0119] The other surface 193c at the opposite side of the surface 193c of the mesh body
193 is exposed to the opening room 203. The heater 194 is disposed so as to be connected
to the other surface 193c of the mesh body 193 exposed to the opening room 203.
[0120] The heater 194 is a configuration for atomizing the liquid aerosol source. The heater
194 is accommodated in the opening room 203. The heater 194 has a wick 204 formed
in a substantial U shape, and an electrical heating wire 205 for heating the wick
204. The wick 204 is a porous member formed in a substantial cylindrical shape and
having liquid absorbency. The wick 204 is bent and deformed to a substantial U shape.
[0121] More specifically, the wick 204 is configured by two axial-direction extending portions
204a extending in the axial direction and a radial-direction extending portion 204c
by connecting two end portions of the two axial-direction extending portions 204a
via a bending portion 204b. The other end of the axial-direction extending portion
204a is connected to the mesh body 193. Accordingly, the aerosol source absorbed by
the mesh body 193 is suctioned by the wick 204.
[0122] The electrical heating wire 205 has an electrical heating wire main body 205a formed
in a helical shape to surround the circumference of the radial-direction extending
portion 204c of the wick 204, and two terminal portions 205b extending from two terminals
of the electrical heating wire main body 205a toward the heater holder 196 side along
the axial direction. When the wick 204 is heated by the electrical heating wire 205,
the aerosol source absorbed by the wick 204 is atomized. Tip ends of the two terminal
portions 205b are turned back toward the mesh body 193 side. The two terminal portions
205b are connected to the heater holder 196.
[0123] Fig. 16 is a perspective view showing the heater holder 196 viewed from the power
unit 21 side (first side in the axial direction).
[0124] As shown in Fig . 13 and Fig. 16, the heater holder 196 is formed in a substantial
bottomed cylindrical shape. An opening portion 196a of the heater holder 196 is directed
to the tank 191 side and the opening portion 191a of the tank 191 is blocked.
[0125] A circumferential wall 196b of the heater holder 196 is formed to have an external
diameter substantially the same as the external diameter of the circumferential wall
191b of the tank 191. A fitting portion 196d whose diameter is reduced via a step
surface 196c is formed in a space between a substantial center and the opening portion
196 in the external circumferential surface of the circumferential wall 196b. The
fitting portion 196d is fitted into the internal circumferential surface of the circumferential
wall 191b in the tank 191. An end portion at the opening portion 191a side in the
circumferential wall 191b of the tank 191 is in contact with the step surface 196c
of the circumferential wall 196b. Accordingly, position alignment of the heater holder
196 with respect to the tank 191 in the axial direction is performed.
[0126] Two engagement pieces 206 are integrally formed at positions corresponding to the
two engagement holes 198 of the tank 191 in an end portion at the opening portion
196a side of the fitting portion 196d. The two engagement pieces 206 protrude toward
the corresponding engagement holes 198. In other words, the two engagement pieces
206 are disposed to be opposite to each other at two side of the axis Q of the heater
holder 196 to sandwich the axis Q.
[0127] The engagement pieces 206 is engaged with the engagement holes 198 of the tank 191
so as to integrate the tank 191 with the heater holder 196. The engagement pieces
206 are formed to be elastically deformable in the radial direction. An engagement
claw 207 insertable into the engagement hole 198 of the tank 191 is formed at a tip
end of the engagement piece 206 to protrude outwardly in the radial direction.
[0128] The engagement claw 207 is formed to have a triangle cross-sectional shape corresponding
to a planar surface defined by the axial direction and the radial direction. In other
words, the engagement claw 207 has a surface at a tip end side formed as an inclined
surface 207a that is inclined toward the base end side (the fitting portion 196d side)
towards the outward in the radial direction. On the other hand, a flat surface 207b
at the base end side of the engagement claw 207 is orthogonal with the axial direction.
[0129] A concave portion 208 arranged in the axial direction with the engagement claw 207
is formed in part of an external circumferential surface apart from the fitting portion
196d in the circumferential wall 196b of the heater holder 196. The concave portion
208 opens toward the outward in the radial direction and the step surface 196c side.
A first air-suction hole 209 penetrating the circumferential wall 196b in the thickness
direction is formed in the concave portion 208. The inside and the outside of the
circumferential wall 196b are communicated via the first air-suction hole 209.
[0130] Furthermore, three engagement concave portions 210 are formed at a bottom portion
196e side in the circumferential wall 196b of the heater holder 196. The three engagement
concave portions 210 are disposed by equal intervals in the circumferential direction
(by 120-degree intervals in the circumferential direction) and at positions apart
from the positions where the concave portion 208 is formed. The engagement concave
portions 210 are formed to open toward the outward in the radial direction and the
bottom portion 196e side. A tapered flattening portion 210a is formed at the bottom
portion 196e side of the engagement concave portion 210 such that the width of the
engagement concave portion 210 in the circumferential direction gradually becomes
wider towards the bottom portion 196e.
[0131] The vertical engagement convex portions (convex portions) 101a-101c of the first
connection member 81 are inserted into the three engagement concave portions 210 respectively.
Accordingly, the heater holder 196 (cartridge 11) is connected with the first connection
member 81 while position alignment of the heater holder 196 (cartridge 11) and the
first connection member 81 in the circumferential direction is performed.
[0132] In the bottom portion 196e of the heater holder 196, a connection wall 211 is integrally
formed in a substantial plate shape standing from the internal surface in the axial
direction. The connection wall 211 extends along the radial direction through the
axis Q of the heater holder 196, and two ends in the longitudinal direction of the
radial direction are connected to the internal surface of the circumferential wall
196b. The inside of the heater holder 196 is partitioned into two rooms by such connection
wall 211.
[0133] Furthermore, in the bottom portion 196e of the heater holder 196, two slits 212 are
formed. The two slits 212 are disposed on two surfaces in the plate-thickness direction
of the connection wall 211.
[0134] Electrodes 213, 214 are disposed on the two surfaces in the plate-thickness direction
of the connection wall 211 respectively. The electrodes 213, 214 have extraction electrodes
213a, 214a disposed on the connection wall 211 and connection electrodes (first planar
electrode and second planar electrode) 213b, 214b extending in a bending manner from
the extraction electrodes 213a, 214a to the external surface of the bottom portion
196e via the corresponding slits 212 respectively. Two terminal portions 205b of the
electrical heating wires 205 configuring the heater 194 are connected to the extraction
electrodes 213a, 214a respectively.
[0135] The connection electrodes 213b, 214b are formed in a substantially semicircular shape
at two sides in the radial direction to sandwich an insulation portion 215 described
below. More specifically, the two connection electrodes 213b, 214b are disposed to
cause sides 213c, 214c in a linear shape when viewed from the axial direction to face
each other in the radial direction. Two connection electrodes 213b, 214b are disposed
to cause arc-shaped sides 213d, 214d in an arc shape when viewed from the axial direction
to configure an external circumferential portion. An end portion of the connection
wall 211 is interposed between the sides 213c, 214c of the two connection electrodes
213b, 214b. A tip end of the pin electrode (electrode main body) 49 held by each electrode
retainer 50 is in contact with each of the connection electrodes 213b, 214b in a state
in which the heater holder 196 (cartridge 11) is connected with the first connection
member 81. In other words, the bottom portion 196e of the heater holder 196 functions
as an electrode configuration surface (second electrode configuration surface) being
opposite to the base surface 91a in the axial direction in a state in which the cartridge
11 is attached to the main body unit 10.
[0136] Each of the connection electrodes 213b, 214b is at least formed on a rotation locus
of the pin electrode 49 (first pin electrode 49a and second pin electrode 49b) in
a case when the power unit 21 and the cartridge 11 are relatively rotated around the
axis O (axis Q). In other words, each of the connection electrodes 213b, 214b is formed
in a region including both of a first virtual circle C1 with the axis O as a center
and through the first pin electrode 49a, and a second virtual circle C2 with the axis
O as a center and through the second pin electrode 49b. According to the present embodiment,
the pin electrodes 49a, 49b are disposed in a line symmetry manner such that the virtual
circles C1, C2 are coincided with each other.
[0137] The end portion of the connection wall 211 interposed between the sides 213c, 214c
of the two connection electrodes 213b, 214b extends along the radial direction through
the axis Q of the heater holder 196; in other words, the connection wall 211 is disposed
on a virtual straight line T1 in a predetermined direction among the virtual straight
lines T1 connecting two pin electrodes 49. The predetermined direction is coincided
with a virtual straight line T2 through a center in the circumferential direction
of one engagement concave portion 210 among the three engagement concave portions
210 formed in the heater holder 196 and the axis Q of the heater holder 196. The connection
wall 211 is formed with a width in a short direction (circumferential direction around
the axis Q) that is a little larger than a diameter of each pin electrode 49.
[0138] The end portion of the connection wall 211 is disposed in this way to function as
the insulation portion 215 partitioning the connection electrodes 213b, 214b in the
circumferential direction. By disposing the insulation portion 215 on the virtual
straight line T2 through the center in the circumferential direction of one engagement
concave portion 210 and the axis Q of the heater holder 196, the two connection electrodes
213b, 214b are definitely in contact with the tip ends of each pin electrode 49 respectively
in the state in which the heater holder 196 (cartridge 11) and the first connection
member 81 are connected with each other. In other words, there is no possibility for
either of the two connection electrodes 213b, 214b to come in contact with the two
pin electrodes 49 simultaneously. In this manner, the connection electrodes 213b,
214b are formed in a semicircular shape at two sides of the radial direction to sandwich
the virtual straight line T2 (insulation portion 215) and include the virtual circles
C1, C1, and expand outwardly (arc-shaped sides 213d, 214d) and inwardly (sides 213c,
214c) in the radial direction.
[0139] Concave portions 213e, 214e recessed inwardly in the radial direction are formed
in a substantial center in the circumferential direction in the arc-shaped sides 213d,
214d of the two connection electrodes 213b, 214b. In the bottom portion 196e of the
heater holder 196, a second air-suction hole 216 penetrating the bottom portion 196e
in the thickness direction is formed at a position corresponding to one concave portion
213e between the positions corresponding to the concave portions 213e, 214e of the
connection electrodes 213b, 214b. The inside and the outside of the bottom portion
196e are communicated via the second air-suction hole 216.
[0140] A concave portion 196f having the same shape with the connection electrodes 213b,
214b viewed from the axial direction is formed at the position corresponding to the
connection electrodes 213b, 214b in the bottom portion 196e. The connection electrodes
213b, 214b are accommodated in the concave portion 196f. By forming the concave portion
196f, surfaces of the connection electrodes 213b, 214b and a surface of a portion
of the bottom portion 196e where the connection electrodes 213b, 214b are not disposed
are positioned on the same plane. A portion of the atomization container 195 is accommodated
so as to be fitted in the internal circumferential surface of the circumferential
wall 196b in the heater holder 196.
[0141] As shown in Fig. 11, the external circumferential portion of the bottom portion 196e
comes in contact with the surrounding convex portion 93 in the axial direction in
the state in which the cartridge 11 is attached in the retention unit 22. Accordingly,
a space surrounded by the bottom portion 196e and the connection cap 80 (the base
surface 91a and the surrounding convex portion 93) forms a buffer space S3 communicating
the communication port 51 and the second air-suction hole 216. In the example shown
in Fig. 11, the communication port 51 and the second air-suction hole 216 are separate
from each other in the axial direction and disposed at positions departing from each
other in the circumferential direction. The communication port 51 and the second air-suction
hole 216 may be disposed at positions departing from each other in the radial direction.
[0142] The communication port 51 according to the present embodiment is communicated with
the inside of the flow passage tube 197 via the buffer space S3 and the second air-suction
hole 216. A portion of the bottom portion (second surface) 196e in contact with the
surrounding convex portion 93 is formed in a flat surface orthogonal with the axial
direction. The portion of the bottom portion 196e in contact with the surrounding
convex portion 93 may be a convex surface, a concave surface, an inclined surface
or the like.
[0143] According to the present embodiment, the surrounding convex portion 93 is in close
contact with the bottom portion 196e in an elastically deformation state since the
cartridge 11 is pressed by the mouthpiece 23. However, the surrounding concave portion
93 and the bottom portion 196e do not have to be in close contact with each other
and may be separated from each other. In other words, if it is possible to generate
a negative pressure in the pressure change room S1 via the communication port 51 during
the suction, a micro gap may be generated between the surrounding convex portion 93
and the bottom portion 196e.
[0144] Fig. 17 is a perspective view showing the atomization container 195 viewed from the
mesh body 193 side (second side in the axial direction).
[0145] The atomization container 195 shown in Fig. 13, Fig. 14, and Fig. 17 is formed of
the resin material having the elasticity such as the silicone resin or the like. The
atomization container 195 is disposed in a space between the other surface 193c of
the mesh body 193 and the vicinity of the bottom portion 196e of the heater holder
196 in the axial direction. In other words, the atomization container 195 is formed
in a substantial cylindrical shape so as to surround the circumference of the heater
194, and the atomization container 195 is integrally formed by a cylinder portion
217 fitting to the internal circumferential surface of the circumferential surface
191b in the tank 191 and a fitting portion 218 in a substantial block shape and fitting
to the internal circumferential surface of the circumferential surface 196b in the
heater holder 196.
[0146] A step surface 217a is formed in a major portion at a center in the radial direction
in an end portion at the mesh body 193 side of the cylinder portion 217. By forming
the step surface 217a, a protrusion portion 219 in a ring shape is formed that the
external circumferential portion of the cylinder portion 217 protrudes toward the
liquid retaining boy 193 side. An end portion of the protrusion portion 219 is in
contact with the other surface 193c of the mesh body 193. An external diameter of
the protrusion portion 219 is substantially the same or a little smaller than the
internal diameter of the circumferential wall 191b in the tank 191.
[0147] An accommodation concave portion 220 is formed in a major portion of the step surface
217a corresponding to the shape of the heater 194. The accommodation concave portion
220 becomes an atomization room M configured to store the aerosol atomized by the
heater 194. The atomization room M is communicated with the flow passage tube 197
of the tank 191.
[0148] A bearing surface 221 to which the bending portion 204b of the wick 204 configuring
the heater 194 is placed is formed in the accommodation concave portion 220. A concave
portion 221a for avoiding interference of the terminal portion 205b of the electrical
heating wire 205 configuring the heater 194 is formed in a surface at the internal
side in the radial direction of the bearing surface 221.
[0149] A seal portion 222 being close to the fitting portion 218 is formed in the external
circumferential surface of the cylinder portion 217. The seal portion 222 is formed
across the whole circumference except for a notch portion 222a described below and
to protrude outwardly in the radial direction. The seal portion 222 functions to secure
a sealing performance between the cylinder portion 217 and the circumferential wall
191b of the tank 191, and functions to prevent the atomization container 195 from
slipping from the tank 191.
[0150] An external diameter of the sealing portion 222 is a little larger than the internal
diameter of the circumferential wall 191b of the tank 191. Accordingly, in a state
in which the atomization container 195 is accommodated in the tank 191, the seal portion
222 is compressed in the axial direction. Therefore, the sealing performance of the
seal portion 222 is secured, and the slipping of the atomization container 195 from
the tank 191 is prevented due to the friction resistance of the seal portion 222.
[0151] Two notch portions 222a are formed in the seal portion 222. The two notch portions
222a are disposed to be opposite to each other at two sides of the axis Q of the tank
191 to sandwich the axis Q. The external air and a liquid accumulation portion 223
described below are communicated with each other by the notch portions 222a.
[0152] The liquid accumulation portion 223 is formed in the external circumferential surface
of the cylinder portion 217 between the tip end of the protrusion portion 219 and
the seal portion 222. The liquid accumulation portion 223 is configured to temporarily
accumulate leaked aerosol source in a case in which the liquid aerosol source stored
in the liquid storage room 202 of the tank 191 is leaked via the internal circumferential
surface of the circumferential wall 191b of the tank 191 when the mesh body 193 and
the wick 204 are saturated.
[0153] The liquid accumulation portion 223 is a concave portion configured by obliquely
forming the whole external circumferential surface of the cylinder portion 217 such
that a gap between the external circumferential surface of the cylinder portion 217
and the circumferential wall 191b of the tank 191 gradually becomes narrower from
the seal portion 222 toward the tip end of the protrusion portion 219. In other words,
the liquid accumulation portion 223 is the concave portion where the gap between the
external circumferential surface of the cylinder portion 217 and the circumferential
wall 191b of the tank 191 gradually becomes wider towards the opening portion 191a
of the tank 191.
[0154] Since the liquid accumulation portion 223 is formed in this manner, a narrow portion
279 where a micro gap is generated between the protrusion portion 219 and the circumferential
wall 191b of the tank 191 is formed in the vicinity of the protrusion portion 219
of the cylinder portion 217.
[0155] The end portion of the protrusion portion 219 in the cylinder portion 217 is in contact
with the other surface 193c of the mesh body 193. The external circumferential surface
of the mesh body 193 is in contact with the internal circumferential surface of the
tank 191. Accordingly, the narrow portion 279 formed between the protrusion portion
219 of the cylinder portion 217 and the circumferential wall 191b of the tank 191
is covered (blocked) by the external circumferential portion of the mesh body 193.
[0156] Furthermore, a concave portion 224 receiving the engagement piece 206 is formed at
a position corresponding to the engagement piece 206 at the heater holder 196 side
more than the seal portion 222 in the external circumferential surface of the cylinder
portion 217. The engagement piece 206 is inserted into the concave portion 224 such
that position alignment of the atomization container 195 and the heater holder 196
in the circumferential direction is performed. A bottom surface 224a of the concave
portion 224 in the cylinder portion 217 is in contact with the internal surface of
the engagement piece 206 at the internal side in the radial direction.
[0157] The fitting portion 218 of the atomization container 195 is formed in a substantial
cylindrical shape capable of fitting into the internal circumferential surface of
the circumferential wall 196b in the heater holder 196. In other words, the fitting
portion 218 is formed that an external diameter is reduced than the external diameter
of the cylinder portion 217 via the step portion 217b. A slit 225 being insertable
into the connection wall 211 of the heater holder 196 is formed in the fitting portion
218. A slit for electrical heating wire that is not shown in figures and communicates
with the slit 225 is formed in the fitting portion 218, and the terminal portion 205b
of the electrical heating wire 205 is insertable into the slit for electrical heating
wire. By inserting the terminal portion 205b of the electrical heating wire 205 into
the slit for electrical heating wire, the terminal portion 205b is held by the atomization
container 195. The extraction electrodes 213a, 214a disposed in the connection wall
211 and the terminal portion 205b of the electrical heating wire 205 are connected.
[0158] A ventilation passage 226 is formed at a position in the fitting portion 218 corresponding
to the first air-suction hole 209 of the heater holder 196 and the second air-suction
hole 216. Furthermore, a slit 218a communicating the slit 225 and the ventilation
passage 226 with the atomization room M (accommodation concave portion 220) of the
cylinder portion 217 is formed in the fitting portion 218. The ventilation passage
226 and the atomization room M (accommodation concave portion 220) of the atomization
container 195 are communicated via the slit 218a. Accordingly, the atomization room
M (accommodation concave portion 220) is communicated with the first air-suction hole
209 and the second air-suction hole 216 of the heater holder 196 via the ventilation
passage 226 and the slit 218a.
(Overall assembly structure of suction device)
[0159] Fig. 18 is a front view of the suction device 1.
[0160] As shown in Fig. 18, the main body unit 10 of the suction device 1 has a connection
portion 300 configured to connect the power unit 21, the retention unit 22, and the
mouthpiece 23 in the axial direction along the axis O (center axis). The connection
portion 300 has a first rotation connection portion 301 connecting the power unit
21 and the retention unit 22 and a second rotation connection portion 302 connecting
the retention unit 22 and the mouthpiece 23.
[0161] In the description hereinafter, in a planar view viewing the power unit 21 side from
the mouthpiece 23 side along the axis O, in the circumferential direction around the
axis O, a clockwise direction rotating around the axis O is referred to as a rotation
direction M1, and a counter-clockwise direction rotating around the axis O is referred
to as a rotation direction M2.
[0162] The first rotation connection portion 301 is configured to perform a connection and
release the connection of the power unit 21 and the retention unit 22 by a relative
rotation of the power unit 21 and the retention unit 22 around the axis O. In a case
of taking the power unit 21 as a reference, when the retention unit 22 is rotated
in the rotation direction M1 with respect to the power unit 21, the power unit 21
and the retention unit 22 are connected. When the retention unit 22 is rotated in
the rotation direction M2 with respect to the power unit 21, the connection of the
power unit 21 and the retention unit 22 is released.
[0163] The first rotation connection portion 301 has a rotation connection mechanism 310
configured by the first connection member 81 and the second connection member 122
shown in Fig. 9, and a lock mechanism 311 configured by the annular piece 82 and the
second connection member 122 shown in Fig. 9 and Fig. 10. More specifically, as shown
in Fig. 9, the rotation connection mechanism 310 is configured to insert the horizontal
engagement convex portion 102 disposed in the first connection member 81 of the power
unit 21 into the engagement groove 158 formed in the second connection member 122
of the retention unit 22, and then rotate the retention unit 22 in the rotation direction
M1 (see Fig. 18) with respect to the power unit 21 so as to engage the horizontal
engagement convex portion 102 to the locking piece 142 and connect the power unit
21 with the retention unit 22.
[0164] The lock mechanism 311 is configured to restrict the rotation of the retention unit
22 in the rotation direction M2 for releasing the connection by the rotation connection
mechanism 310. More specifically, as shown in Fig. 9 and Fig. 10, the lock mechanism
311 has the bending portion 106 disposed in the annular piece 82 attached to the power
unit 21 and protruding outwardly in the radial direction, and a tip end portion 142a
disposed in the second connection member 122 of the retention unit 22 and protruding
inwardly in the radial direction relatively with respect to a bottom portion of the
engagement concave portion 155 in the locking piece 142. The tip end portion 142a
of the locking piece 142 is positioned in a movement passage of the bending portion
106 around the axis O.
[0165] At the time of the connection in the rotation connection mechanism 310 (when the
retention unit 22 is rotated in the rotation direction M1 with respect to the power
unit 21), the bending portion 106 and the tip end portion 142a of the locking piece
142 come in contact with each other and the bending portion 106 climbs over the tip
end portion 142a while elastically deforming inwardly in the radial direction. The
bending portion 106 deforms outwardly in the radial direction after climbing over
the tip end portion 142a to restore the shape and engages with the engagement concave
portion 155. When the bending portion 106 engages with the engagement concave portion
155, the bending portion 106 and the tip end portion 142a of the locking piece 142
are locked in the rotation direction M1 to be opposite with each other. Accordingly,
it is impossible to release the connection of the power unit 21 and the retention
unit 22 without applying a certain force.
[0166] According to the first rotation connection portion 301, in order to improve manufacturing
efficiency or the like, as shown in the present embodiment, even if the power unit
21 and the retention unit 22 are capable of being divided, it is possible to make
the connection of the power unit 21 and the retention unit 22 by the rotation connection
mechanism 310 easy and improve reliability (connection strength) of the connection
state of the power unit 21 and the retention unit 22 by the lock mechanism 311. The
locking by the lock mechanism 311 is performed simultaneously with the connection
by the rotation connection mechanism 310 such that convenience (usability) of the
assembly may be improved.
[0167] As shown in Fig. 10, in the lock mechanism 311, the bending portion 106 elastically
deforming is disposed at the internal side in the radial direction of the locking
piece 142 having a larger thickness and higher rigidness than the annular piece 82.
Accordingly, in a state in which the power unit 21 and the retention unit 22 are connected,
the bending portion 106 is covered by the locking piece 142 from the external side
and protected. Accordingly, even if falling, collision or the like occurs, a number
of cases such as the bending portion 106 being damaged become less. Accordingly, strength
for repeatedly using the assembly is secured and the reliability of locking is improved.
[0168] As shown in Fig. 9, the lock piece 142 configured to lock the bending portion 106
has the engagement groove 158 to which the horizontal engagement convex portion 102
of the rotation connection mechanism 310 is engaged. In this manner, the lock piece
142 forms a portion (engagement groove 158) of the rotation connection mechanism 310
while forms a portion (tip end portion 142a (convex portion)) of the lock mechanism
311 such that it is relatively easy to improve the reliability (connection strength)
of the connection state.
[0169] As shown in Fig. 18, the second rotation connection member 302 is configured to perform
a connection and release the connection between the retention unit 22 and the mouthpiece
23 by the relative rotation of the retention unit 22 and the mouthpiece 23 around
the axis O. In a case of taking the retention unit 22 as a reference, when the mouthpiece
23 is rotated in the rotation direction M1 with respect to the retention unit 22,
the retention unit 22 and the mouthpiece 23 are connected. When the mouthpiece 23
is rotated in the rotation direction M2 with respect to the retention unit 22, the
connection of the retention unit 22 and the mouthpiece 23 is released.
[0170] As shown in Fig. 11, the second rotation connection portion 302 has a male screw
portion 160a disposed in the mouthpiece 23 and a female screw portion 123a disposed
in the retention unit 22. More specifically, the second rotation connection portion
302 is configured to connect the retention unit 22 and the mouthpiece 23 by rotating
the male screw portion 160a disposed in the mouthpiece 23 in the rotation direction
M1 with respect to the female screw portion 123a disposed in the retention unit 22.
The second rotation connection portion 302 is configured to release the connection
of the retention unit 22 and the mouthpiece 23 by rotating the male screw portion
160a disposed in the mouthpiece 23 with respect to the female screw portion 123a disposed
in the retention unit 22.
[0171] As shown in Fig. 18, the rotation direction M1 is a connection direction of the retention
unit 22 with respect to the power unit 21 and also a connection direction of the mouthpiece
23 with respect to the retention unit 22. The rotation direction M2 is a connection
releasing direction of the retention unit 22 with respect to the power unit 21 and
also a connection cancelling direction of the mouthpiece 23 with respect to the retention
unit 22. In this manner, the rotation directions for the connection and releasing
the connection around the axis O in the first rotation connection portion 301 and
the second rotation connection portion 302 are the same as each other. Accordingly,
it is possible to provide a unified sense of the assembly operation to the user and
improve the convenience (usability).
[0172] For a replacement of the cartridge 11 or the like, a frequency of releasing the connection
of the mouthpiece 23 and the retention unit 22 is higher than a frequency of releasing
the connection of the power unit 21 and the retention unit 22. According to the present
embodiment, the connection of the power unit 21 and the retention unit 22 is released
by applying a first torque 301T around the axis O in the first rotation connection
portion 301, and the connection of the retention unit 22 and the mouthpiece 23 is
released by applying a second torque 302T that is smaller than the first torque 301T
in the second rotation connection portion 302. Accordingly, it is possible to prevent
co-rotation of the retention unit 22 and the power unit 21 at the time of detaching
the mouthpiece 23 from the retention unit 22.
[0173] The first torque 301T is a peak value of a torque value when the retention unit
22 is rotated in the rotation direction M2 with respect to the power unit 21, and
the first torque 301T depends on a spring modulus or the like corresponding to the
elastically deformation in the radial direction of the bending portion 106 as shown
in Fig. 9 and Fig. 10. The second torque 302T is a peak value of a torque value when
the mouthpiece 23 is rotated in the rotation direction M2 with respect to the retention
unit 22, and the second torque 302T depends on a static friction force or the like
between the male screw portion 160a and the female screw portion 123a as shown in
Fig. 11. It is preferable that the first torque 301T is 1.5 times larger than the
second torque 302T, for example.
[0174] The first rotation connection portion 301 and the second rotation connection portion
302 are different in connection structure such that it is easy to adjust a magnitude
relationship between the first torque 301T and the second torque 302T. For example,
if a material selection and a thickness adjustment of the bending portion 106 (annular
piece 82) configuring the lock mechanism 311 of the first rotation connection portion
301 is performed, the spring modulus of the bending portion 106 corresponding to the
elastically deformation in the radial direction is changed and it is easy to adjust
the magnitude of the first torque 301T with respect to the second torque 302T.
[0175] Fig. 19 is a cross-sectional view along the axial direction when the mouthpiece 23
is removed from the suction device 1.
[0176] As shown in Fig. 19, in the suction device 1, the cartridge 11 is attachable and
detachable in the axial direction by removing the mouthpiece 23 from the main body
unit 10. A configuration for removing the mouthpiece 23 from the main body unit 10
is referred to as a cartridge accommodation portion 320. In other words, the cartridge
accommodation portion 320 has the retention unit 22 and the power unit 21.
[0177] The cartridge accommodation portion 320 forms a cartridge accommodation space 321
in a bottomed cylindrical shape. A circumferential wall of the cartridge accommodation
portion 320 forming the cartridge accommodation space 321 is formed by the retention
unit 22. A bottom portion of the cartridge accommodation portion 320 forming the cartridge
accommodation space 321 is formed by the power unit 21. In other words, the circumferential
wall (retention unit 22) of the cartridge accommodation portion 320 is attachable
to and detachable from the bottom portion (power unit 21) of the cartridge accommodation
portion 320.
[0178] The vertical engagement convex portion 101 (the vertical engagement convex portion
101a-101c are designated to the reference sign 101 after Fig. 19) disposed in the
first connection member 81 is formed to stand in the axial direction in the bottom
portion of the cartridge accommodation portion 320. The vertical engagement convex
portion 101 is disposed to be insertable into the engagement concave portion 210 disposed
in the cartridge 11 in the axial direction. In other words, the vertical engagement
convex portion 101 and the engagement concave portion 210 are formed in the same radius
with the axis O as a center. The vertical engagement convex portion 101 and the engagement
concave portion 210 form a first rotation restriction portion 330 for restricting
a relative rotation of the cartridge 11 around the axis O with respect to the cartridge
accommodation portion 320 (cartridge accommodation space 321).
[0179] In the first rotation restriction portion 330, when the cartridge 11 and the cartridge
accommodation portion 320 are relatively rotated around the axis O, the vertical engagement
convex portion 101 is inserted into the engagement concave portion 210 formed in the
same radius and the restriction for the rotation of the cartridge 11 around the axis
O is performed. Accordingly, position alignment of the cartridge 11 in the circumferential
direction is performed, and electrical conduction of the connection electrodes 213b,
214b (see Fig. 10) of the bottom portion 196e of the cartridge 11 and the pin electrode
49 of the power unit 21 is secured.
[0180] The first rotation restriction portion 330 together with the mouthpiece 23 configure
a position-alignment mechanism 340 for aligning positions of the cartridge 11 with
respect to the cartridge accommodation portion 320 by interlocking with screwing of
the mouthpiece 23 with respect to the cartridge accommodation portion 320 (retention
unit 22). According to the position-alignment mechanism 340, the position alignment
of the cartridge 11 may be performed simultaneously with screwing the mouthpiece 23
to the cartridge accommodation portion 320. Accordingly, the position alignment of
the cartridge 11 attachable to and detachable from the cartridge accommodation portion
320 becomes easy and complicatedness of the assembling is eliminated. There is not
necessity to rotate the cartridge 11 directly by hands.
[0181] More specifically, the mouthpiece 23 has the first slip prevention member (cartridge
contact portion) 161 for rotating the cartridge 11 around the axis O with respect
to the cartridge accommodation portion 320. The first slip prevention member 161 is
attached to the mouthpiece main body 160, and the first slip prevention member 161
comes in contact with the cartridge 11 during a period when the mouthpiece main body
160 is connected to the retention unit 22. When the first slip prevention member 161
comes in contact with the cartridge 11, the cartridge 11 begins to rotate with the
mouthpiece 23 together, and when a position of the engagement concave portion 210
in the circumferential direction and a position of the vertical engagement convex
portion 101 in the circumferential direction are coincided with each other, the cartridge
11 falls off toward the bottom portion side of the cartridge accommodation portion
320 due to gravity and the vertical engagement convex portion 101 is inserted into
the engagement concave portion 210 so as to perform a positioning of the cartridge
11 in the circumferential direction.
[0182] Furthermore, when the mouthpiece 23 is screwed, the first slip prevention member
161 is compressed in the axial direction between the cartridge 11 supported by the
power unit 21 (the vertical engagement convex portion 101 and the like) and the mouthpiece
main body 160. As shown in Fig. 11, the first slip prevention member 161 presses the
cartridge 11 toward the power unit 21 in a state in which the mouthpiece 23 is screwed
with the retention unit 22. Accordingly, a positioning of the cartridge 11 in the
axial direction is performed.
[0183] As described above, the first slip prevention member 161 is formed of the silicone
resin such that it is easy to cause the friction force for rotating the cartridge
11 in the circumferential direction and a pressing force for pressing the cartridge
11 in the axial direction to be realized. As shown in Fig. 19, the first slip prevention
member 161 has the engagement protrusion 171 formed on an opposite surface 161a being
opposite to the cartridge 11. According to the engagement protrusion 171, a contact
of the first slip prevention member 161 with respect to the cartridge 11 is not a
plane contact such that a contact pressure increases and it becomes easy to realize
the friction force in the circumferential direction and the pressing force in the
axial direction.
[0184] As shown in Fig. 11, the engagement protrusion 171 is pressed and crushed in the
axial direction such that the penetration hole 191d of the cartridge 11 and the communication
hole 169a of the first slip prevention member 161 are airtightly sealed with each
other, the flow passages of the cartridge 11 and the mouthpiece 23 are communicated,
and the aerosol generated in the cartridge 11 is capable of being suctioned through
the mouthpiece 23. The engagement protrusion 171 is formed in a double annular shape
(see Fig. 12) such that a double seal having a high airtightness may be formed.
[0185] As shown in Fig. 19, the mouthpiece 23 has a second rotation restriction portion
350 for restricting a relative rotation of the first slip prevention member 161 with
respect to the mouthpiece main body 160. The second rotation restriction portion 350
is formed by the fitting protrusion 170 (see Fig. 12) disposed in the first slip prevention
member 161 and the oval-shaped penetration hole 168 (see Fig. 12) disposed in the
mouthpiece main body 160. A pair of the fitting protrusions 170 extend toward the
mouthpiece main body 160 in the axial direction and fit with two end portions in the
longitudinal direction of the penetration hole 168.
[0186] According to the second rotation restriction portion 350, even if condensed aerosol
is stored in a space between the mouthpiece main body 160 and the first slip prevention
member 161, idling operation (slip) of the first slip prevention member 161 with respect
to the mouthpiece main body 160 may be prevented. Accordingly, a positioning of the
cartridge 11 in the circumferential direction may be definitely performed. The penetration
hole 168 may be formed in the oval shape to be integrally formed with the suction
port 23a.
(Effects)
(Assembly method of the suction device)
[0187] Next, an assembly method of the suction device 1 will be described.
[0188] As shown in Fig. 2, in order to assemble the suction device 1 according to the present
embodiment, the retention unit 22 is assembled to the power unit 21 at first. More
specifically, after inserting the horizontal engagement convex portion 102 into the
engagement groove 158 in the axial direction, the power unit 21 and the retention
unit 22 are relatively rotated around the axis O. Therefore, the power unit 21 and
the retention unit 22 are assembled with each other in the first rotation connection
portion 301 in a state in which position alignments in the axial direction and the
circumferential direction are performed. At the time of detaching the power unit 21
and the retention unit 22, operations reverse to the above-described operations are
performed.
[0189] Subsequently, the cartridge 11 is inserted into the retention unit 22. More specifically,
the cartridge 11 is inserted into the retention unit 22 in a state in which the connection
electrodes 213b, 214b of the cartridge 11 are directed to the retention unit 22 side
in the axial direction. In a case in which the positions of the vertical engagement
convex portions 101a-101c of the power unit 21 and the position of the engagement
concave portion 210 of the cartridge 11 are coincided with each other in the circumferential
direction, each of the vertical engagement convex portions 101a-101c is inserted into
the corresponding engagement concave portion 210. In the engagement concave portion
210, the flattening portion 210a is formed and on the other hand, inclined surfaces
are formed at tip end of the vertical engagement convex portions 101a-101c. Accordingly,
the vertical engagement convex portions 101a-101c are smoothly inserted into the engagement
concave portion 210. Accordingly, position alignments of the cartridge 11 with respect
to the power unit 21 in the circumferential direction and the axial direction are
performed and the cartridge 11 is assembled with the power unit 21 at a regular position.
[0190] In other words, one pin electrode 49 of the pin electrodes 49 of the power unit 21
and either connection electrode 213b or 214b of the connection electrodes 213b, 214b
in the cartridge 11 are connected with each other. The other pin electrode 49 and
the other connection electrode 213b or 214b of the connection electrodes 213b, 214b
in the cartridge 11 are connected with each other. The power of the power unit 21
is transmittable to the electrical heating wire 205 of the heater 194 via the connection
electrodes 213b, 214b (electrodes 213, 214). Furthermore, the buffer space S3 is formed
by the cartridge 11 and the connection cap 80 by engaging the bottom portion 196e
of the cartridge 11 with the surrounding convex portion 93.
[0191] Subsequently, the mouthpiece 23 is assembled with the retention unit 22 by the second
rotation connection portion 302. More specifically, the male screw potion 160a of
the mouthpiece main body 160 is screwed to the female screw portion 123a of the sleeve
123. Therefore, the first slip prevention member 161 comes in contact with the bottom
portion 191c of the cartridge 11. When the mouthpiece 23 is further tightened in this
state, the first slip prevention member 161 is elastically deformed such that the
cartridge 11 is held in the retaining in the retention unit 22 in a state in which
the cartridge 11 is pressed toward the power unit 21 side in the axial direction.
A movement of the cartridge 11 with respect to the power unit 21 in the circumferential
direction is restricted by the vertical engagement convex portions 101a-101c. Accordingly,
the cartridge 11 is configured to not to rotate following the mouthpiece 23 due to
the friction force applied between the first slip prevention member 161 and the cartridge
11.
[0192] Subsequently, the tobacco capsule 12 is inserted into the mouthpiece 23. More specifically,
the tobacco capsule 12 is fitted into the mouthpiece main body 160 in a state of directing
the mesh opening toward the mouthpiece 23.
[0193] Therefore, the assembly of the suction device 1 is finished.
[0194] However, during the insertion of the cartridge 11, there is a case in which the positions
of the vertical engagement convex portions 101a-101c of the power unit 21 and the
position of the engagement concave portion 210 of the cartridge 11 are not coincided
in the circumferential direction due to an orientation of the cartridge in the circumferential
direction. In this case, the bottom portion 196e of the cartridge 11 enters a state
of climbing over the vertical engagement convex portions 101a-101c (hereinafter simply
referred to as a "climb- over state").
[0195] Fig. 20 is a view showing the state in which the cartridge 11 climbs over the vertical
engagement convex portion 101.
[0196] As shown in Fig. 20, in the climb- over state of the cartridge 11, movement of the
cartridge 11 toward the power unit 21 side in the axial direction with respect to
the power unit 21 is restricted. Accordingly, the pin electrodes 49 and the connection
electrodes 213b, 214b are separated in the axial direction, and a conduction of the
power unit 21 and the cartridge 11 is not secured. In the climb- over state, even
in a case in which the pin electrodes 49 and the connection electrodes 213b, 214b
are in contact, there is a possibility that the pin electrodes 49 and the connection
electrodes 213b, 214b are not disposed in desired positions in the circumferential
direction.
[0197] Fig. 21 is a view showing a state of screwing the mouthpiece 23 in the climb- over
state of the cartridge 11.
[0198] As shown in Fig. 21, when the cartridge 11 is kept in the climb- over state and the
mouthpiece 23 is rotated to be screwed with the retention unit 22, as shown in following
Fig. 22, the first slip prevention member 161 comes in contact with the cartridge
11 at least before the screwing is finished. More specifically, as shown in Fig. 21,
at a moment when the male screw portion 160a of the mouthpiece 23 is about to engage
with the female screw portion 123a of the retention unit 22, the first slip prevention
member is not in contact with the cartridge 11; however, as shown in Fig. 22, when
the male screw portion 160a is screwed with the female screw portion 123a and rotated
by a half-rotation or 1, 2 rotations, the first slip prevention member 161 is in contact
with the cartridge 11.
[0199] Fig. 22 is a view showing a state in which the mouthpiece 23 and the cartridge 11
are rotated together.
[0200] As shown in Fig. 22, in the state in which the first slip prevention member 161 is
in contact with the cartridge 11, if the screwing operation of the mouthpiece 23 is
continued, the mouthpiece 23 and the cartridge 11 are rotated together due to the
friction force applied between the first slip prevention member 161 and the cartridge
11. In other words, due to the screwing operation of the mouthpiece 23, the cartridge
11 is pressed toward the power unit 21 side in the axial direction and rotated in
the circumferential direction (tightening direction (rotation direction M1)).
[0201] Subsequently, when the positions of the connection electrodes 213b, 214b in the circumferential
direction and the positions of the vertical engagement convex portions 101a-101c in
the circumferential direction are coincided with each other, the vertical engagement
convex portions 101a-101c enter the corresponding engagement concave portions 210
respectively. In other words, the cartridge 11 is assembled at the regular position
by allowing the movement of the cartridge 11 in the axial direction with respect to
the power unit 21. Accordingly, the pin electrodes 49 and the connection electrodes
213b, 214b are in contact in a state in which the movement of the cartridge 11 in
the axial direction with respect to the power unit 21 is restricted.
[0202] Fig. 23 is a descriptive view showing the state in which the mouthpiece 23 is finally
tightened.
[0203] As shown in Fig. 23, due to the position alignment of the vertical engagement convex
portion 101 and the engagement concave portion 210 in the circumferential direction,
when the movement of the cartridge 11 in the axial direction is allowed, the mouthpiece
23 may be further screwed. When the mouthpiece 23 is finally screwed, the connection
electrodes 213b, 214b are pressed by the pin electrodes 49 and the first slip prevention
member 161 between the cartridge 11 supported by the power unit 21 and the mouthpiece
main body 160 is compressed in the axial direction that the positioning of the cartridge
11 in the axial direction is performed. In this manner, the positioning of the cartridge
11 in the circumferential direction and the axial direction and further the electrically
conduction of the cartridge 11 and the power unit 21 are performed by the screwing
of the mouthpiece 23. Additionally, a gap between the cartridge 11 and the mouthpiece
23 is sealed by the engagement protrusion 171 of the first slip prevention member
161 being compressed in the axial direction.
[0204] In this manner, when the cartridge 11 is assembled in the regular position, the surrounding
convex portion 93 of the connection cap 80 comes in contact with the cartridge 11.
Accordingly, the buffer space S3 (see Fig. 3) whose circumference is surrounded by
the surrounding convex portion 93 is formed between the bottom portion 196e of the
heater holder 196 of the cartridge 11 and the connection cap 80.
(Assembly method of cartridge)
[0205] Next, an assembly method of the cartridge 11 will be described.
[0206] Firstly, the liquid aerosol source is filled in the liquid storage room 202 of the
tank 191, and then the gasket 192 and the mesh body 193 are inserted from the opening
portion 191a of the tank 191 in this sequence. At this time, the surface 192b of the
gasket 192 is in contact with the end surface 201a of the convex portion 201 of the
tank 191. The surface 193b of the mesh body 193 is caused to overlap the other surface
192d of the gasket 192. Accordingly, the inside of the tank 191 is correctly partitioned
into the liquid storage room 202 and the opening room 203 by the mesh body 193. The
mesh body 193 itself is soft; however, the orientation the mesh body 193 is maintained
by the gasket 192 and the poisoning thereof is performed by the gasket 192.
[0207] The heater 194 and the atomization container 195 are assembled to the heater holder
196 parallelly to the above-described process. More specifically, firstly, the heater
194 is assembled to the accommodation concave portion 220 of the atomization container
195. Subsequently, the fitting portion 218 side of the atomization container 195 is
directed to the opening portion 196a of the heater holder 196 and the atomization
container 195 is inserted into the heater holder 196. The fitting portion 218 is fitted
to the internal circumferential surface of the circumferential wall 196b in the heater
holder 196. At this time, directions of the connection wall 211 of the heater holder
196 and the slit 225 of the fitting portion 218 are aligned and the connection wall
211 is inserted into the slit 225.
[0208] Subsequently, the heater holder 196 is assembled to the opening portion 191a of the
tank 191. More specifically, the engagement piece 206 side of the heater holder 196
is directed to face the opening portion 191a side of the tank 191 and the heater holder
196 is inserted into the opening portion 191a of the tank 191. At this time, positions
of the engagement hole 198 and the guide concave portion 198a formed in the circumferential
wall 191b of the tank 191 and a position of the engagement piece 206 of the heater
holder 196 are aligned.
[0209] When the heater holder 196 is inserted into the opening portion 191a of the tank
191 in this state, firstly, the inclined surface 207a formed in the engagement claw
207 of the engagement piece 206 comes in contact with the circumferential wall 191b
of the tank 191. The engagement claw 207 smoothly comes in contact with the guide
concave portion 198a of the tank 191 by the inclined surface 207a.
[0210] Thereafter, when the heater holder 196 is further pushed into the inside of the tank
191, the engagement claw 207 is carried in the guide concave portion 198a. The engagement
piece 206 is pressed to be elastically deformed inwardly in the radial direction by
the guide concave portion 198a. At this time, the engagement piece 206 is smoothly
elastically deformed inwardly in the radial direction by the inclined surface 207a
of the engagement claw 207. The two engagement pieces 206 are disposed at two sides
of the axis Q to sandwich the axis Q and face each other such that it is difficult
for forces applied inwardly in the radial direction to the two engagement pieces 206
to be biased when the heater holder 196 is viewed as a whole. At this time, the forces
causing the engagement pieces 206 to be elastically deformed are balanced such that
it is easy for the heater holder 196 to be inserted into the opening portion 191a
of the tank 191. The bottom surface 224a of the concave portion 224 of the atomization
container 195 is in contact with the internal surface at the internal side of the
engagement piece 206 in the radial direction. Accordingly, when the engagement piece
206 is elastically deformed inwardly in the radial direction, the concave portion
224 of the atomization container 195 is slightly deformed inwardly in the radial direction.
[0211] Thereafter, when the heater holder 196 is further pushed, the engagement claw 207
moves along the guide concave portion 198a. Then, the engagement claw 207 climbs over
a terminal end of the guide concave portion 198a (end portion at the engagement hole
198 side of the tank 191), and further the engagement claw 207 is inserted into the
engagement hole 198 of the tank 191 by a restoring force of the engagement piece 206
and a restoring force of the concave portion 224 of the atomization container 195.
Accordingly, the heater holder 196 is fixed to the tank 191 and the assembly of the
cartridge 11 is finished.
[0212] In a state in which the heater holder 196 is fixed to the tank 191, a surface at
the external side in the radial direction of the engagement piece 206 is covered by
the circumferential wall 191b of the tank 191. When the engagement of either of the
two engagement claws 207 is about to be released, for example, when the tank 191 or
the heater holder 196 is about to be tilted so as to cause one of the engagement claw
207 to be removed from the engagement hole 198, the other engagement claw 207 is pressed
outwardly in the radial direction. Accordingly, once the engagement hole 198 and the
engagement piece 206 are engaged with each other, it is difficult to release the engagement.
(Usage method of suction device)
[0213] When the suction device 1 is used, the user operates to press the button 78. At this
time, for example, by pressing the button 78 for several times (for example, five
times), a start-up preparation signal is output from the switch element 52 to a controller
included in the first substrate module 34.
[0214] Subsequently, the user suctions in a state of biting the mouthpiece 23 or the tobacco
capsule 12. Therefore, the air in the retention unit 22 is suctioned and tie pressure
inside the retention unit 22 becomes negative. When the pressure inside the retention
unit 22 becomes negative, the air in the pressure change room S1 is suctioned through
the inside of the atomization container 195 (inside the atomization room M) of the
cartridge 11, the buffer space S3, and the communication port 51 such that it also
becomes the negative pressure inside the pressure change room S1. More specifically,
the air in the pressure change room S1 flows into the buffer space S3 through the
communication port 51 and then flows into the heater holder 196 through the second
air-suction hole 216. The air flowing into the heater holder 196 passes through the
flow passage tube 197 through the ventilation passage 226 and the atomization container
195 and then enters the mouth of the user through the mouthpiece 23. The pressure
sensor 53 outputs a start-up signal to the controller when the pressure sensor 53
detects that the pressure inside the pressure change room S1 is less than a predetermined
value, for example.
[0215] The controller receiving the start-up signal causes the heater 194 of the cartridge
11 to be electrified. Since it becomes the negative pressure inside the retention
unit 22, fresh air is introduced in the retention unit 22 through the ventilation
hole 131. Furthermore, the fresh air is introduced into the atomization room M of
the cartridge 11 (the opening room 203 of the tank 191) through the first air-suction
hole 209 formed in the heater holder 196 of the cartridge 11 and the ventilation passage
226 of the atomization container 195.
[0216] The electrical heating wire 205 generates heat when the heater 194 is electrified.
Therefore, the liquid aerosol source impregnating the wick 204 through the mesh body
193 is heated and atomized. The atomized aerosol fills the atomization room M. Then,
the atomized aerosol together with the fresh air introduced into the atomization room
M is suctioned to the mouthpiece 23 side through the flow passage tube 197 of the
tank 191. Thereafter, a gaseous mixture of the atomized aerosol and air enters the
mouth of the user through the tobacco capsule 12. Accordingly, the user may taste
a flavor of the tobacco.
(Effect of the cartridge)
[0217] In the cartridge 11, the liquid aerosol source stored in the liquid storage room
202 of the tank 191 is absorbed by the mesh body 193 and further absorbed by the wick
204. When the mesh body 193 and the wick 204 is saturated (exceeding a liquid retention
force), there is a risk that the liquid aerosol source leaks out to the heater holder
196 side from an interval between the external circumferential portion of the mesh
body 193 and the internal circumferential surface of the circumferential wall 191b
in the tank 191 and through the internal circumferential surface.
[0218] The liquid accumulation portion 223 is formed on the external circumferential surface
of the atomization container 195 positioned at the heater holder 196 side of the mesh
body 193. Accordingly, the liquid aerosol source is stored in the liquid accumulation
portion 223 and leakage to the heater holder 196 side (the side where the heater 194
is disposed) is prevented.
[0219] More specifically, according to the present embodiment, a volume (space volume) of
the liquid accumulation portion 223 is approximately 53.4 cubic millimeters. In a
case of assuming that a residual liquid quantity in the liquid storage room 202 of
the tank 191 is 1/3 and a headspace volume expansion coefficient (a volume expansion
coefficient of the air in the residual 2/3 space in the liquid storage room 202) is
6%, there is approximately 100 cubic millimeters of the liquid aerosol source being
extruded from the liquid storage room 202 due to the air expansion in the liquid storage
room 202 of the tank 191. Among the extruded liquid aerosol source, there is approximately
20-30 cubic millimeters of the liquid aerosol source may be retained by the mesh body
193 and the wick 204. Among the approximately 100 cubic millimeters of the liquid
aerosol source, the remaining 70-80 cubic millimeters of the liquid aerosol source
is accumulated in the accumulation portion 223.
[0220] The liquid accumulation portion 223 is formed that the gap between the external circumferential
surface of the cylinder portion 217 and the circumferential wall 191b of the tank
191 gradually becomes narrower towards the tip end of the protrusion portion 219 from
the seal portion 222. In other words, in the vicinity of the protrusion portion 219
of the cylinder portion 217, the narrow portion 279 where the gap between the protrusion
portion 219 and the circumferential wall 191b of the tank 191 becomes narrow is formed.
Accordingly, among the liquid aerosol source extruded from the liquid storage room
202 of the tank 191, it is easy for the residual aerosol source after the mesh body
193 and the wick 204 are saturated to be suctioned due to the narrow portion 279 and
the residual aerosol source actively flows to the liquid accumulation portion 223
through the narrow portion 279.
[0221] In other words, the liquid aerosol source stored in the liquid storage room 202 of
the tank 191 is firstly absorbed by the mesh body 193 and then absorbed by the wick
204. After the mesh body 193 and the wick 204 are saturated, the liquid aerosol source
is suctioned by the narrow portion 279 and accumulated in the liquid accumulation
portion 223.
[0222] On the other hand, when the saturation state of the mesh body 193 is resolved, the
liquid aerosol source stored in the liquid accumulation portion 223 is suctioned through
the narrow portion 279 (the interval between the protrusion portion 219 and the circumferential
wall 191b of the tank 191). Then, the liquid aerosol source is absorbed by the mesh
body 193. In other words, the liquid aerosol source stored in the liquid accumulation
portion 223 flows back to the liquid storage room 202 of the tank 191 through the
narrow portion 279. At this time, since the narrow portion 279 is covered (blocked)
by the external circumferential portion of the mesh body 193, a capillary force due
to the mesh body 193 also applies such that the liquid aerosol source efficiently
flows back to the liquid storage room 202 of the tank 191.
[0223] Since two notch portions 222a are formed in the seal portion 222 of the cylinder
portion 217, the liquid accumulation portion 223 and the external air are communicated
through the notch portions 222a of the seal portion 222 and a gap between the engagement
hole 198 of the tank 191 and the engagement piece 206 (engagement claw 207) of the
heater holder 196. As another example, the liquid accumulation portion 223 and the
external air may be communicated through the notch portions 222a of the seal portion
222 and the first air-suction hole 209 of the heater holder 196. Accordingly, it is
impossible to generate a pressure difference between the inside and outside the liquid
accumulation portion 223. As a result, an unintentional leakage of the liquid aerosol
source to the outside from the liquid accumulation portion 223 is prevented and the
liquid aerosol source efficiently flows back to the liquid storage room 202 of the
tank 191.
(Effect)
[0224] In this manner, a configuration according to the present embodiment has the cartridge
11 storing the aerosol source, the cartridge accommodation portion 320 formed in a
bottomed cylindrical shape and configured to accommodate the cartridge 11, the mouthpiece
23 being screwed with the cartridge accommodation portion 320 and in which the suction
port 23a configured to suction the aerosol atomized by the aerosol source is formed,
and the position-alignment mechanism 340 configured to align the position of the cartridge
11 with respect to the cartridge accommodation portion 320.
[0225] According to this configuration, the position alignment of the cartridge 11 with
respect to the cartridge accommodation portion 320 may be performed simultaneously
with the screwing of the mouthpiece 23 to the cartridge accommodation portion 320.
Accordingly, the position alignment of the cartridge 11 with respect to the cartridge
accommodation portion 320 becomes easy and complications of the assembling are eliminated.
There is no necessity to rotate the cartridge 11 directly by hands.
[0226] According to the present embodiment, the position-alignment mechanism 340 has the
vertical engagement convex portion (engagement convex portion) 101 disposed in the
cartridge accommodation portion 320 (one side) and protruding toward the cartridge
11 (the other side) in the axial direction in which the axis O (central axis) of the
cartridge accommodation portion 320 extends, and the engagement concave portion 210
(concave groove portion) disposed in the cartridge 11 and being insertable into the
vertical engagement convex portion 101 in the axial direction, wherein the vertical
engagement portion 101 and the engagement concave portion 210 are formed in the same
radius with the axis O as the center.
[0227] According to this configuration, when the cartridge 11 is relatively rotated with
respect to the cartridge accommodation portion 320 around the axis O, the vertical
engagement convex portion 101 formed in the same radius is inserted into the engagement
concave portion 210 such that the positioning of the cartridge 11 in the circumferential
direction is performed.
[0228] In the position-alignment mechanism 340, the vertical engagement convex portion 101
may be disposed in the cartridge 11 and the engagement concave portion 210 may be
disposed in the cartridge accommodation portion 320.
[0229] According to the present embodiment, the mouthpiece 23 has the first slip prevention
member (cartridge contact portion) 161 coming in contact with the cartridge 11 during
the screwing with the cartridge accommodation portion 320.
[0230] According to this configuration, the mouthpiece 23 enters a state in which the screw
is applied with respect to the cartridge accommodation portion 320 (position alignment
state in the radial direction), and it is possible to prevent the position shift in
the radial direction of the cartridge 11 which rotates together with the mouthpiece
23.
[0231] The first slip prevention member 161 may not be attached to the mouthpiece 23 as
another member and the cartridge contact portion may be formed in the mouthpiece main
body 160.
[0232] According to the present embodiment, the first slip prevention member 161 presses
the cartridge 11 toward the bottom portion (the power unit 21) of the cartridge accommodation
portion 320 in the state in which the mouthpiece 23 is screwed in the cartridge accommodation
portion 320.
[0233] According to this configuration, due to the press of the first slip prevention member
161, the positioning in the axial direction of the cartridge 11 may be performed.
[0234] According to the present embodiment, the first slip prevention member 161 is formed
of the silicone resin (elastic resin material).
[0235] According to the present configuration, due to the elastic deformation of the first
slip prevention member, it becomes easy to apply the friction force in the circumferential
direction to cause the cartridge 11 to rotate and apply the pressing force in the
axial direction to press the cartridge 11. The first slip prevention member 161 becomes
easy to be assembled with the mouthpiece main body 160. As shown in Fig. 12, the opening
at the retention unit 22 side of the mouthpiece main body 160 has the reduced diameter
than the ring portion 169 of the first slip prevention member 161, and if the ring
portion 169 is elastically deformed and moved through the reduced-diameter portion,
the ring portion 169 restores and fitted to the mouthpiece main body 160. Accordingly,
slipping of the first slip prevention member 161 with respect to the mouthpiece main
body 160 is prevented.
[0236] The first slip prevention member 161 may be formed of other elastic resin materials
such as rubber, elastomer or the like besides the silicone resin.
[0237] According to the present embodiment, the contact protrusion (annular protrusion)
171 is formed in the opposite surface 161a of the first slip prevention member 161
being opposite to the cartridge 11.
[0238] According to this configuration, due to the contact protrusion 171, the contact of
the first slip prevention member 161 with respect to the cartridge 11 is not a planar
contact such that the contact pressure increases and the friction force in the circumferential
direction and the pressing force in the axial direction becomes easy to apply.
[0239] The surface of the contact surface of the cartridge 11 being contact with the first
slip prevention member 161 may be processed to be rough such that the friction force
in the circumferential direction becomes further easier to apply. For example, embossment
may be applied to form unevenness on the contact surface of the cartridge 11.
[0240] According to the present embodiment, the circumferential wall of the cartridge accommodation
portion 320 (retention unit 22) is attachable to and detachable from the bottom portion
of the cartridge accommodation portion 320 (power unit 21).
[0241] According to this configuration, maintenance of the vertical engagement concave portion
101 of the position-alignment mechanism 340 disposed in the bottom portion of the
cartridge accommodation portion 320 (power unit 21), the pin electrodes 49 and the
like becomes easy.
[0242] A configuration according to the present embodiment has the tobacco capsule 12 (favor
taste container) attached to the mouthpiece 23.
[0243] According to this configuration, it is possible to add a flavor to the aerosol passing
through the suction port 23a.
(Other modification example)
[0244] Preferred embodiments of the present invention have been described above, the present
invention is not limited to the embodiments and modifications thereof. Additions,
omissions, substitutions and other changes in the structure are possible without departing
from the spirit of the present invention. The present invention is not limited by
the foregoing description and is limited only by the scope of the appended claims.
[0245] For example, according to the above-described embodiment, an example of the suction
device 1 configured for the tobacco capsule 12 to be attachable to and detachable
from is described as an example of an aerosol generation device for generating aerosol
without combustion is described; however, the aerosol generation device is not limited
to the configuration only. As another example of the aerosol generation device, a
configuration without the tobacco capsule 12 such as an electrical tobacco may be
provided. In this case, the aerosol source including a flavor is accommodated in the
cartridge 11 and the aerosol including the flavor is generated by the aerosol generation
device.
[0246] In other words, in the above-described embodiment, a configuration having the main
body unit 10 and the cartridge 11 while without the tobacco capsule 12 may be referred
to as an aerosol generation device. A configuration having the main body unit 10 only
while without the cartridge 11 and the tobacco capsule 12 may be referred to as a
main body unit of an aerosol generation device.
[0247] According to the above-described embodiment, a case in which the main body unit 10
is a divided configuration of the power unit 21, the retention unit 22, and the mouthpiece
23 is described; however, the main body unit 10 is not limited to the configuration
only. For example, the power unit 21 and the retention unit 22 may be integrally formed,
and the retention unit 22 and the mouthpiece 23 may be integrally formed. At least
one of the power unit 21, the retention unit 22, and the mouthpiece 23 may be further
divided into a plurality of units.
[0248] According to the above-described embodiment, a configuration that the retention unit
22 is formed in a cylindrical shape to surround the circumference of the cartridge
11 is described; however, the retention unit 22 is not limited to the configuration
only. The retention unit 22 only has to be a configuration capable of retaining the
cartridge 11. In the present description, attachment and detachment of the cartridge
11 and the main body unit 10 (power unit 21) is not limited to the configuration of
accommodating the cartridge 11 in the retention unit 22 and being retained by the
mouthpiece 23, and the configuration of simply connecting or disconnecting the pin
electrodes 49 with the connection electrodes 213b, 214b is included.
[0249] According to the above-described embodiment, a configuration that the power unit
21 and the retention unit 22 are formed in cylindrical shapes and disposed coaxially
is described; however, the power unit 21 and the retention unit 22 are not limited
only to this configuration. The power unit 21 and the retention unit 22 may be formed
in different shapes.
[0250] According to the above-described embodiment, a configuration that the storage battery
33 and the substrate modules 34, 35 are carried on the storage battery holder 36 is
described; however, the configuration is not limited thereto. The storage battery
33 and the substrate modules 34, 35 may be directed carried in the housing 31.
[0251] According to the above-described embodiment, a configuration of the button 78 (switch
element 52) for outputting the start-up preparation signal is described; however,
a configuration without the button 78 (a configuration for start-up by a detection
by the pressure sensor 53) may be configured.
[0252] Part of the above-described embodiment or the whole embodiment may be disclosed in
the following appendix and are not limited thereto.
(Appendix 1)
[0253] An aerosol generation device comprises a cartridge storing an aerosol source; a cartridge
accommodation portion formed in a bottomed cylindrical shape and configured to accommodate
the cartridge; a flow-path generation unit screwed to the cartridge accommodation
portion and forming a flow path of the aerosol atomized by the aerosol source; and
a position-alignment mechanism configured to perform position alignment of the cartridge
with respect to the cartridge accommodation portion by interlocking with the screwing
of the flow-path generation unit with respect to the cartridge accommodation portion.
(Appendix 2)
[0254] A cartridge of an aerosol generation device comprises a tank in a cylindrical shape;
and an engagement groove portion disposed at one end portion of the tank in the axial
direction and being recessed toward the other end portion in the axial direction at
a position being apart in a radial direction from a center of the tank.
(Appendix 3)
[0255] A main body unit of an aerosol generation device comprises a suction port portion
where a suction port for suctioning an aerosol is formed; a cartridge accommodation
portion formed in a bottomed cylindrical portion and in which a female screw portion
to which the suction port portion is screwed is formed at a top opening; and an engagement
protrusion disposed in a bottom portion of the cartridge accommodation portion and
protruding toward the top opening at a position being apart from a center of the cartridge
accommodation portion in a radial direction.
[0256] Additions, omissions, substitutions and other changes in the structure are possible
without departing from the spirit of the present invention. Each of the above-described
modification examples may be suitably combined.
[Industrial Applicability]
[0257] The present invention relates to an aerosol generation device and a non-combustion
suction device, and position alignment of the cartridge with respect to the cartridge
accommodation portion and the assembling may be simplified.