Technical Field
[0001] The present invention relates to a dust collector provided attachably and detachably
in a main body of an electric vacuum cleaner, and an electric vacuum cleaner including
the dust collector.
Background Art
[0002] Conventionally, there has been known a cyclon type-electric vacuum cleaner as described
in FIG.10 (for reference, see
JP 2001-104223A, paragraphs 38 and 45, FIG.2).
[0003] The electric vacuum cleaner includes a dust cup 1 in which an upper portion is opened,
an electric blower 2 for generating a negative pressure in an inside of the dust cup
1, and so on. A suction opening 3 is provided in a peripheral wall 1A of the dust
cup 1, the suction opening 3 communicates through a suction passage 5 with a suction
unit 4 for sucking dust.
[0004] The dust sucked through the suction unit 4 is introduced in the dust cup 1 passing
through the suction passage 5 and the suction opening 3 of the dust cup 1. Spiral
flow is generated in the dust cup 1 to separate dust from air, and then only the air
is sucked from the opened upper portion of the dust cup 1 to the electric blower 2
and discharged to the outside.
[0005] According to the electric vacuum cleaner, because the dust is collected in the dust
cup 1, a paper pack-filter is not required.
[0006] However, in such an electric vacuum cleaner, because the dust and air are separated
merely by the spiral flow generated in the dust cup 1, the dust collected in the dust
cup 1 is not compressed almost, therefore the dust cup 1 is filled with the dust rapidly,
hence there is a problem that an amount of the dust collected in the dust cup 1 is
very less actually.
[0007] Therefore, there has been proposed an electric vacuum cleaner according to the preamble
of claim 1, which is provided with a compressing means for compressing dust collected
in a dust-collecting part (for reference, see Japanese Patent Application No.
2003-09701, published as
JP 2004298494).
[0008] However, in the technology, because a knob for operating the compressing means is
provided on a lower position of a main body of the electric vacuum cleaner remote
from a gripping tube part disposed on an upper portion of the main body in order to
hold the main body of the electric vacuum cleaner, there is a case that while holding
the main body with one hand, the compressing means must be operated by sliding the
knob with another hand, therefore the compressing means is difficult to operate.
Disclosure of Invention
[0010] An object of the present invention is to provide a dust collector capable of compressing
dust by a simple operation, and an electric vacuum cleaner comprising such dust collector.
[0011] To achieve the above object, a dust collector of the present invention comprises
a body having a dust-collecting chamber for storing dust, a gripping part provided
outside the main body and gripped to carry the body, a compressing mechanism including
a compressing member for compressing the dust stored in the dust-collecting chamber,
and a lever for operating the compressing member by moving the lever toward the gripping
part.
[0012] The lever is disposed into a position capable of operating when the gripping part
is gripped, and provided along an upper surface of the gripping part.
[0013] The body includes a separating means disposed in an upstream side of the dust-collecting
chamber and separating dust and air, a discharging opening for the dust provided in
a bottom portion of the dust-collecting chamber, and a bottom lid disposed to allow
the discharging opening to open and close and to discharge the dust by the compressing
member when opening the bottom lid.
[0014] The body is disposed in a main body of an electric vacuum cleaner, and an operating
means capable of operating the compressing member provided in the body of the dust
collector is provided in the main body of the electric vacuum cleaner.
Brief Description of Drawings
[0015]
FIG.1 is a perspective view showing an outline of an electric vacuum cleaner according
to the present invention.
FIG.2 is a partial sectional view showing a main body for the electric vacuum cleaner
shown in FIG.1.
FIG.3 is a sectional view showing a portion of the main body for the electric vacuum
cleaner in which a dust collector is mounted.
FIG.4 is a perspective view showing the dust collector.
FIG.5 is a perspective view showing the dust collector with a cover case removed.
FIG.6 is a perspective view showing a structure of a cooperative mechanism.
FIG.7 is a cross-sectional view of the dust collector.
FIG.8 is a perspective view showing a portion of the cooperative mechanism.
FIG.9 is an explanatory view showing a main portion of a dust collector in another
embodiment.
FIG.10 is an explanatory view showing a structure of a conventional electric vacuum
cleaner.
Best Mode for Carrying Out the Invention
[0016] A mode for carrying out an electric vacuum cleaner provided with a dust collector
according to the present invention will be explained based on embodiments shown in
the accompanying drawings below.
[0017] As shown in FIG.1, the electric vacuum cleaner 10 comprises a main body 11, a dust-collecting
hose 12 having one end connected with the main body 11 and another end connected with
an operation tube 13 at hand, an extension tube 14 connected with the operation tube
13 removably, and a suction unit 15 connected with a leading end of the extension
tube 14 removably. One end of the dust-collecting hose 12 is connected with a connecting
port 10A provided in the main body 11 removably.
[0018] The operation tube 13 includes an operation part 13A, which is provided with a plurality
of operating switches 13B for operating the electric vacuum cleaner 10.
[0019] The suction unit 15 includes a suction chamber (not shown), which is provided with
a suction port (not shown) formed on a bottom surface of the suction unit and sucking
dust.
[0020] The main body 11 comprises a case 20, a dust collector 50 disposed removably in a
collector-containing chamber 21 provided in the case 20, a lid 40 having a back portion
connected pivotally with the case 20 by a hinge and a front side, which is openable
and closable upward and downward, as shown in FIG.2.
[0021] The dust collector 50 includes a body 53, which has a suction port 52 provided at
a front side (left side in FIG.5) of the body, and a filter-mounting part 58 provided
at a back side of the body, as shown in FIGs.4 and 5. The filter-mounting part 58
has a back opening 51. The suction port 52 communicates through the connecting port
10A, the dust-collecting hose 12 and the extension tube 14 with the suction chamber
of the suction unit 15. The filter-mounting part 58 is formed into a cylindrically
shaped member having a rectangular shape in section, and, for example, a pleated filter
unit P is mounted removably in the filter-mounting part 58.
[0022] The collector-containing chamber 21 is formed at a front side of the case 20, the
upper opening 22 of the collector-containing chamber 21 is closed by the lid 40 constantly.
An electric blower 23 is provided at a back side of the case 20, a suction opening
24 of the electric blower 23 communicates through a connecting air passage G with
the back opening 51 of the dust collector 50.
[0023] The case 20 is provided with a plurality of exhausting holes 25, and back wheels
are also provided with a plurality of exhausting holes 27. Air sucked through the
suction opening 24 by the electric blower 23 and discharged through a discharging
port (not shown) is emitted from the exhausting holes 25 and 27.
[0024] The body 53 comprises a dust-separating means 60 for separating air containing dust
sucked through the suction port 52 into the dust and the air, a dust-collecting chamber
55 disposed beneath the dust-separating means and containing the dust separated by
the dust-separating means 60, a guiding air passage 56 for guiding the dust separated
by the dust-separating means 60 to the dust-collecting chamber 55, and a negative-pressure
chamber 57 formed on the dust-collecting chamber 55 integrally and so on. Provided
on a bottom portion of the dust-collecting chamber 55 are a discharging port 53D for
discharging the dust, and a bottom lid 59 disposed at the discharging portion so that
the discharging port can be opened and closed.
[0025] The dust-separating means 60 has a frame 61 provided with a plurality of openings
61A and a net filter F1 provided at each of the openings. A bugle-like air passage
62 is formed in an inner side of the frame surrounded by the net filters F1. The air
passage 62 extends straightly in a forward and backward direction.
[0026] The frame 61 has a front opening 61a provided to face the suction port 52 and having
a diameter larger than that of the suction port 52 and a back opening 61b having a
generally same diameter to that of the suction port 52.
[0027] The guiding air passage 56 communicates with the back opening 61b of the frame 61
and an introducing opening 55d provided in a back portion of a ceiling wall 55A of
the dust-collecting chamber 55.
[0028] The negative-pressure chamber 57 communicates with the back opening 51, and the dust-separating
means 60 and the guiding air passage 56 are disposed in the negative-pressure chamber
57. An air passage 62 in the dust-separating means 60 communicates through each opening
61A of the frame 61 with the negative-pressure chamber 57.
[0029] An opening 55Ha is provided in a back wall 55H of the dust-collecting chamber, the
dust-collecting chamber 55 communicates through the opening 55Ha with the negative-pressure
chamber 57, and a filter F2 is provided at the opening 55Ha.
[0030] The dust collector 50 has a gripping part 54 provided on an upper portion of the
main body 53. The gripping part 54 comprises a U character shaped band-like member
fixed on opposed sides of the main body 53, as shown in FIGs.4 and 5. A person can
carry the main body 53 by holding the gripping part 54 with hand.
[0031] A compressing mechanism for compressing the dust contained in dust-collecting chamber
55 in cooperation with gripping the gripping part 54 by hand is provided.
[0032] The compressing mechanism includes a lever 85 disposed in a position capable of operating
when gripping the gripping part 54 and a compressing member 100 disposed in the dust-collecting
chamber 55 so as to compress the dust in the dust-collecting chamber 55 through a
cooperative mechanism 70 when operating the lever 85. The lever 85 comprises a generally
U character shaped band-like member extending above the gripping part 54 and along
the gripping part, and disposed bridging opposite sides of the body 53 of the dust
collector.
[0033] The compressing member 100 is provided below the ceiling wall 55A of the dust-collecting
chamber 55 so as to move upward and downward, a dome-like guiding wall portion 101
disposed along an inner side of the guiding air passage 56 is formed integrally with
the compressing member 100, as shown in FIG.6.
[0034] Moreover, the compressing member 100 is formed with an opening 102 facing the back
opening 61b of the dust-separating means 60 and an opening 103 facing the introducing
opening 55d of the dust-collecting chamber 55. To a back edge portion of the compressing
member 100, a blade 110 sliding on a filter surface F2a at the upstream of the filter
F2 is attached.
[0035] The cooperative mechanism 70 includes a gear means connected with the lever 85 and
a rod means connected with the gear means, for example.
[0036] The rod means has upwardly and downwardly extending rods 104 and 104, which are attached
detachably to opposite sides of the compressing member 100. The rods 104 and 104 are
inserted in holes 55f and 55f provided in opposite ends of the ceiling wall 55A of
the dust-collecting chamber 55 to enable the rods to move upward and downward, as
shown in FIG.7.
[0037] The gear means includes racks 72 provided on legs 86 of the lever 85, sector gears
73 engaged with the racks 72, sector gears 75 mounted on shafts 74 of the gears 73,
as shown in FIG.8, and upwardly and downwardly extending rack members 105 and 105
provided on upper ends of the rods 104 and 104 to engage with the sector gears 75.
[0038] Downwardly projecting shafts 87 and 87 are provided on lower portions of the legs
86 and 86 of the lever 85, flanges 87F and 87F are formed on upper portions of the
shafts 87 and 87.
[0039] Springs S1 and S1 are attached to the shafts 87 and 87, as shown in FIG.5, upper
portions of the springs S1 and S1 are engaged with the flanges 87F and 87F, and lower
portions of the springs S1 and S1 are engaged with an upper surface of the ceiling
wall 55A of the dust-collecting chamber 55. The lever 85 is biased by biasing forces
of the springs S1 and S1, projections 85A and 85A provided on opposite ends of the
lever 85 are abutted with lower surfaces of cover cases 71 and 71, and the lever 85
is limited so that the lever 85 is not moved beyond a predetermined amount.
[0040] Each sector gear 73 is mounted on each cover case 71 rotatably, a diameter of each
sector gear 75 is set to be larger than that of each sector gear 73.
[0041] When the lever 85 is moved downwardly against the biasing forces of the springs S1
and S1, the gears 73 and 73 are rotated counterclockwise (in FIG.8), the gears 75
and 75 are rotated counterclockwise together with the rotation of the gears 73 and
73 integrally. The counterclockwise rotation of the gears 75 and 75 causes the racks
106 and 106 to move together with the rods 104 and 104 downwardly.
[0042] The rods 104 and 104 are moved downwardly an amount larger than that of the downward
movement of the lever 85, because the diameter of each gear 75 is set to be larger
than that of each gear 73.
[0043] The downward movement of the rods 104 and 104 causes the compressing member 100 to
move downwardly.
[0044] In this way, when the lever 85 is moved downwardly, the compressing member 100 is
moved by the cooperative mechanism 70 downwardly.
[0045] An opening and closing mechanism 90 for opening and closing the bottom lid 59 is
provided, the opening and closing mechanism 90 comprises an upwardly and downwardly
movable arm 91 disposed in the vicinity of the cooperative mechanism 70, a link member
93 for rotating about a shaft 92 according to the upward and downward movement of
the arm 91, and so on, as shown in FIG.5.
[0046] The arm 91 is supported inside the cover case 71 to be movable upwardly and downwardly,
and an operational part 91A on an upper portion of the arm 91 extends upwardly passing
through a hole 71B provided in the cover case 71, as shown in FIG.4. The operational
part 91A forms an operational part for opening and closing the bottom lid 59. The
arm 91 is biased by a spring (not shown) upwardly.
[0047] The link member 93 is pivoted on the shaft 92 provided in the sidewall portion 55S,
as shown in FIG.5. As shown in FIG.5, a hook 94 is provided on a lower portion of
the link member 93, the hook 94 engages with an engaging part (not shown) provided
on the bottom lid 59 so that the bottom lid 59 does not open.
[0048] When the arm 91 is moved downwardly against a biasing force of the spring by pressing
the operational part 91A of the arm 91, the link member 93 is rotated clockwise and
the hook 94 of the link member 93 disengages from the engaging part of the bottom
lid 59 so that the bottom lid 59 opens.
[0049] The bottom lid 59 is opened by rotating it about an axis j 1 at a left side in a
direction shown at the arrow P1, as shown in FIG.4. In this way, when the operational
part 91A of the arm 91 is pressed, the bottom lid 59 is opened through the opening
and closing mechanism 90.
[0050] Meanwhile, the cooperative mechanism 70 and opening and closing mechanism 90 are
covered by the cover case 71 for protecting them (see FIG.4).
[0051] The main body 11 of the electric vacuum cleaner is provided with an operating means
capable of operating the gripping part 54 provided on the body 53 for the dust collector.
The operating means has a hole 41 provided in the lid 40 and a button 42 inserted
in the hole 41, for example. The button 42 is biased by a spring (not shown) upwardly,
and disposed to close the hole 41 usually.
[0052] An upwardly and downwardly extending guiding cylinder 43 is provided beneath the
hole 41 of the lid 40, a shaft 44 provided on a lower surface of the button 42 is
inserted into a guiding hole 43A of the guiding cylinder 43 movably upwardly and downwardly
so that the button 42 can be moved upwardly and downwardly.
[0053] In addition, a projection 45 is formed on the lower surface of the button 42, and
the projection 45 abuts with the lever 85 as described hereinafter (see FIG.2).
[0054] When the button 42 is moved downwardly, the lever 85 is moved downwardly.
[Operation]
[0055] Next, an operation of the electric vacuum cleaner structured as described above is
explained.
[0056] First, the dust collector 50 is disposed in the dust-collecting chamber 21 of the
main body 11 of the electric vacuum cleaner, as shown in FIG.2, the dust-collecting
hose 12 is connected with the connecting port 10A of the main body 11, as shown in
FIG.1, and the suction unit 15 is connected through the extension tube 14 with the
operation tube 13.
[0057] When the operating switches 13B of the operation part 13A on the operation tube 13
are operated, the electric blower 23 is driven. Driving the electric blower 23 causes
air from the suction opening 24 of the electric blower 23 to suck, the suction of
air operates at the back opening 51 of the dust collector 50 through the connecting
air passage G, hence through the pleated filter unit P, the negative-pressure chamber
57 of the dust collector 50 becomes negative pressure.
[0058] The negative pressure operates in the air passage 62 of the dust-separating means
60 through the filter F2 at the dust-collecting chamber 55, the inside of the dust-collecting
chamber 55, and the net filters F1 in the dust-separating means 60, and then the negative
pressure operates over the dust-collecting hose 12, the extension tube 14 and the
suction unit 15 through the suction port 52 of the dust collector 50 so as to suck
air and dust through the suction unit 15.
[0059] The sucked air and dust are introduced to the suction port 52 of the dust collector
50 through the extension tube 14 and the dust-collecting hose 12. The dust and air
sucked into the suction port 52 are sucked to the air passage 62 of the dust-separating
means 60.
[0060] A portion of the air sucked into the air passage 62 is sucked into the negative chamber
57 of the dust collector 50 through the net filters F1 in the dust-separating means
60, further into the suction opening 24 of the electric blower 23 through the pleated
filter unit P at the back opening 51 of the dust collector 50 and the connecting air
passage G.
[0061] On the other hand, the dust sucked into the air passage 62 of the dust-separating
means 60 passes through the air passage 62 straightly, because the dust has a mass
larger than that of the air, guided by the guiding wall 101 of the compressing member
100, and introduced into the dust-collecting chamber 55. In other words, the dust
is separated from the air by the dust-separating means 60, the separated dust is collected
into the dust-collecting chamber 55.
[0062] Moreover, the air going within the air passage 62 straightly is guided by the guiding
wall 101 of the compressing member 100 and introduced in the dust-collecting chamber
55. The air introduced into the dust-collecting chamber 55 is sucked into the negative
chamber 57 of the dust collector 50 passing through the filter F2 at the back wall
55H of the dust-collecting chamber 55, further into the suction opening 24 of the
electric blower 23 through the pleated filter unit P at the back opening 51 of the
dust collector 50 and the connecting air passage G.
[0063] When the cleaning is completed, the driving of the electric blower 23 is stopped
by operation of the switch 13B for stopping disposed on the operation part 13A. Then,
the button 42 provided on the main body 11 is pressed downwardly. When the button
42 is pressed downwardly, the lever 85 is pressed down against the biasing forces
of the springs S1 and S1.
[0064] When the lever 85 is pressed down, the compressing member 100 is moved by the cooperative
mechanism 70 downwardly.
[0065] When the compressing member 100 is pressed downward, the blade 110 of the compressing
member 100 slides on the filter surface F2a of the filter F2 to scrape off the dust
adhering on the filter surface F2a. In addition, the dust stored in the dust-collecting
chamber 55 is compressed by moving the compressing member 100 downwardly. Therefore,
a great amount of dust can be contained in the dust-collecting chamber 55.
[0066] When separating the hand from the button, the lever 85 returns to an original position
by the biasing forces of the springs S1 and S1, the compressing member 100 and the
button 42 return to the original position as shown in FIG.2 in conjunction with the
lever 85.
[0067] Next, a case throwing out the dust stored in the dust-collecting chamber 55 is as
follows.
[0068] First, the dust collector 50 is taken out from the main body 11 by opening the lid
40. When the operation part 91A as shown in FIG.4 is then pressed, the bottom lid
59 is rotated about the axis Jl in a direction of arrow P1 by the opening and closing
mechanism 90 and opened.
[0069] Next, when gripping the lever 85 together with the gripping part 54, the lever 85
is pressed downward toward the gripping part 54, by the press of the lever 85 down,
the compressing member 100 is pressed downwardly to a position sufficient to discharge
the dust by the cooperative mechanism 70. Thereby, the dust in the dust-collecting
chamber 55 is pressed out from the bottom opening of the dust collector 50 downwardly,
therefore throwing the dust out is easy.
[0070] Moreover, because the compressing member 100 can be removed from the rods 104 and
104, it is possible to sweep away dust or the like on the compressing member 100.
[0071] FIG.9 illustrates a portion of a dust collector 150 in another embodiment. The dust
collector 150 is configured to rotate a compressing member 200 about a shaft 201 to
a position shown by chained lines by the cooperative mechanism 70. The filter F2 is
formed into an arc-shape, and the blade slides on a filter surface F2a of the filter
F2 and the dust in the dust-collecting chamber 55 is pressed out by means of the compressing
member 200, when the compressing member 200 is rotated. Meanwhile, in FIG.9, reference
numeral 202 denotes an opening.
Industrial Applicability
[0072] In the above, although the embodiments in which the dust collector according to the
present invention is applied to the electric vacuum cleaner have been described, the
structure for the dust collector can be applied to another any device or instrument
not only the electric vacuum cleaner.