BACKGROUND OF THE INVENTION
1. Field of the Invention
[0001] The present invention relates to a coin dispenser and particularly relates to a coin
dispenser that can stabilize the dispensing direction of coins to a level that does
not practically cause problems even when the diameters of the coins to be dispensed
are different.
[0002] The "coins" used in the present specification include coins serving as money and
tokens serving as money substitute such as medals.
2. Description of Related Art
[0003] As a coin dispenser that dispenses many coins, which are stored in bulk in a storing
bowl, one by one by using a rotating disk disposed in a bottom hole of the storing
bowl, there is a hopper device (for example, Japanese Unexamined Patent Application
Publication No.
2002-150347) that elastically sandwiches, from the left and right, the circumferential surface
of a coin by a fixed roller and an elastically-biased ejecting roller and ejects the
coin as a first prior art. Moreover, as a second prior art, there is a coin hopper
(for example, Japanese Unexamined Patent Application Publication No.
2010-262520) that sandwiches the coin between a fixed plate and an elastically-biased roller
and ejects the coin.
[0004] Furthermore, as a third prior art, there is a disk releasing device (for example,
Japanese Unexamined Patent Application Publication No.
2010-131122) that feeds disks one by one by a rotating disk, aligns the disks in a row in a guide
passage, sandwiches the coin in the front by a fixed member and a movable member,
which is provided to be swingable about a shaft serving as a pivot point and is attached
to a lever biased in a predetermined direction by an elastic part, while sequentially
pushing the disk in a front position by the disk in a rear position, and ejects it.
[0005] Recently, from the viewpoint of convenience, cost reduction, etc., coins having diameters
in a predetermined range such as 1-yen coins, 5-yen coins, 10-yen coins, 50-yen coins,
100-yen coins, and 500-yen coins of Japanese coins are required to be dispensed by
a coin dispenser having a single structure. In other words, the coins having diameters
of 20 millimeters to 26.5 millimeters are required to be dispensed by a coin dispenser
having a single structure.
[0006] However, if the above described first, second, and third prior arts are simply employed,
there are various concerns, and they cannot be readily employed.
[0007] First, matters of concern in a case in which the first prior art is employed will
be explained with reference to FIG. 1 and FIG. 2.
[0008] As shown in FIG. 1, a coin dispenser 10 has a rotating disk 12 and a base 16 disposed
in the back side of the rotating disk 12. In the rotating disk 12, a plurality of
through holes 14, which are disposed at eccentric positions and penetrate therethrough
from the front side toward the back side, are formed. The coin C (a small-diameter
coin SC in FIG. 1) is dropped onto the base 16 through the through hole 14 by the
rotation of the rotating disk 12. While the coin C, which has been dropped onto the
base 16, is guided by a circular guiding wall 24 of a storage hole 22 in a state in
which a surface thereof is in contact with the base 16, the coin is pushed by pushers
20 (a first pusher 20A and a second pusher) formed on the lower surface of a rib 18
between the through holes 14. As a result, the coin C on the base 16 is rotated together
by the rotating disk 12 and reaches an outlet opening 26 of the storage hole 22. The
coin C, which has reached the outlet opening 26, is guided by a guide plate 30 and
brought into contact with an ejecting roller 32 or is guided by regulating pins 34
(a first regulating pin 34A and a second regulating pin 34B) and pushed into the part
between a fixed roller 36 and the ejecting roller 32, and is sandwiched by the fixed
roller 36 and the ejecting roller 32. When the coin C is pushed into the part between
the fixed roller 36 and the ejecting roller 32, the coin C is a sliding pair with
the fixed roller 36 and the ejecting roller 32, but the fixed roller 36 and the ejecting
roller 32 are a turning pair; therefore, as the coin C is moved, the fixed roller
36 and the ejecting roller 32 are rotated, and the coin C is smoothly pushed thereinto
against the biasing force caused by an elastic part (not shown) applied to the ejecting
roller 32.
[0009] Then, immediately after the coin center CC of the coin C passes the straight line
(for the sake of convenience, will be referred to as an ejection border line DDL)
connecting a first contact point PA of the fixed roller 36 and the coin C and a second
contact point PB of the ejecting roller 32 and the coin C, the coin is ejected by
spring force caused by a spring (not shown) applied to the ejecting roller 32. The
ejecting direction by the fixed roller 36 and the ejecting roller 32 is approximately
in the vector direction of the resultant force F3 of the pushing force F1 from the
first contact point PA toward the coin center SCC upon ejection and the reactive force
F2 from the second contact point PB toward the coin center CC, but is the direction
it has received working of inertial force F4 in the direction of rotation together
by the rotating disk 12. More specifically, in the case of the small-diameter coin
SC, the small-diameter ejecting direction SD is in the direction of the vector of
the second resultant force F5 of the resultant force F3 and the inertial force F4.
[0010] Then, if the diameter of the coin C is different, for example in a case of a large-diameter
coin LC in which the diameter of the coin C is large as shown in FIG. 2, since the
weight of the coin is increased, the inertial force F4 is increased, and a large-diameter
ejecting direction LD of the large-diameter coin LC is toward the fixed roller 36
side compared with the small-diameter ejecting direction SD of the small-diameter
coin SC. Therefore, there is a concern that the ejecting direction is widened.
[0011] Furthermore, since the spring force by the spring is increased as the diameter of
the coin C is increased, the rubbing force of the ejecting roller 32 with respect
to the coin C is increased. Therefore, the coin is easily spun, rebound thereof upon
collision with a guide in a next step is large even if the difference in the ejecting
direction is a small angle, and the size of the device may be increased in order to
provide a function for converging the rebound.
[0012] Next, matters of concern in the case in which the second prior art is employed will
be explained with reference to FIG. 3.
[0013] In this case, except that the fixed roller 36 of the first prior art is comprised
of a plate-shaped fixed plate 40, the other structures are the same. The rotation
of the rotating disk 12 causes the coin C to be pushed by the pusher 20 and pushes
the coin into the part between the fixed plate 40 and the ejecting roller 32, and
the coin is finally ejected by the spring force applied to the ejecting roller 32.
[0014] In this case, if the small-diameter coin SC is sandwiched by the fixed plate 40 and
the ejecting roller 32, the small-diameter coin SC and the fixed plate 40 are a sliding
pair, and the friction resistance thereof is large. Therefore, it is expected that
the small-diameter coin SC is moved while sliding on the circumferential surface of
the fixed plate 40, and the coin center SCC passes the ejection border line SDLL as
a result. Therefore, the influence of the inertial force of the small-diameter coin
SC on the ejecting direction is eliminated, and the ejecting direction becomes the
small-diameter ejecting direction SD, which is the direction of the vector of the
small-diameter resultant force SF3 of the small-diameter pushing force SF1 from the
ejecting roller 32 and the small-diameter reactive force SF2 from the fixed plate
40. Also in the case of the large-diameter coin LC, similarly, after the coin center
LCC passes the ejection border line LDDL, the coin is ejected in the large-diameter
ejecting direction LD in the direction of the vector of the large-diameter resultant
force LF3 of the large-diameter pushing force LF1 and the large-diameter reactive
force LF2. The ejecting-direction difference between the small-diameter ejecting direction
SD of the small-diameter coin SC and the large-diameter ejecting direction LD of the
large-diameter coin LC is small, and there is a tendency that there are no practical
problems.
[0015] On the other hand, in a case in which the output power of a driving motor of the
rotating disk 12 is reduced in order to respond to recent demands for energy saving,
the rotation of the rotating disk 12 may not be able to exceed the friction resistance
of the coin C and the fixed plate 40, and the rotation may be stopped. Increasing
the size of the motor in order to solve this is against the social needs for energy
saving, and it cannot be readily employed.
[0016] There is a concern that the third prior art cannot be applied to a small dispenser
since the lever supporting the ejecting roller, which is a movable member, is long.
SUMMARY OF THE INVENTION
[0017] The present invention has an object to solve above described various concerns and
below first to third main objects, and other objects will be elucidated in the explanation
of embodiments.
[0018] The first object of the present invention is to provide a coin dispenser in which
the ejecting direction of coins is a constant direction within a range that does not
practically cause problems regardless of the diameters of the coins.
[0019] The second object of the present invention is to provide a power-saving coin dispenser
in which the ejecting direction of the coins is a constant direction regardless of
the diameters of the coins.
[0020] The third object of the present invention is to provide a power-saving low-price
coin dispenser in which the ejecting direction of the coins is a constant direction
regardless of the diameters of the coins.
[0021] In order to achieve these objects, the present invention is configured in the below
described manner.
[0022] A coin dispenser comprising: a base that supports the surface of a coin; a coin guiding
wall that is disposed on the base and forms a circular storage hole partially having
an opening; a rotating disk that can be rotated about a rotating axis in the storage
hole, forms a plurality of through holes disposed along a circumferential direction
at eccentric positions with respect to the rotating axis, and has a pusher disposed
between the mutually adjacent through holes in a back side and projecting to the base
side; and a fixed roller that is disposed outside of the storage hole on the base
and in a first end side of the opening and is practically fixed to the base; and an
ejecting roller that is disposed outside of the storage hole on the base with a predetermined
interval from the fixed roller and is elastically biased so as to get closer to the
fixed roller; the coin dispenser that ejects the coin by an elastic action of the
ejecting roller after the coin is moved from the storage hole to a part between the
fixed roller and the ejecting roller through the opening by pushing the coin by a
pushing front surface of the pusher positioned in a rotating direction side of the
rotating disk while guiding the coin on the base by the coin guiding wall by rotation
of the rotating disk; wherein a fixed guide is disposed on the base to be adjacent
to the fixed roller in downstream of the direction of ejection of the coin, and a
state that the coin is sandwiched between the fixed guide and the ejecting roller
is generated.
[0023] In the coin dispenser of the present invention, normally, after the coin is guided
by the coin guiding wall while the coin is pushed by the pusher and slid on the base
by the rotation of the rotating disk, the coin is guided by the fixed roller and subjected
to change of direction toward the outer circumferential direction of the rotating
disk, and the coin is pushed into the part between the fixed roller and the ejecting
roller.
[0024] The condition of fixed roller being a turning pair, coin which is subject to change
in direction is guided by the fixed roller turning pair and is sandwiched by the fixed
guide and the ejecting roller. Then, the coin center crosses the ejection border line,
which is a straight line connecting a first contact point of the fixed roller and
the coin and a second contact point of the ejecting roller and the coin; therefore,
ejection of the coin is started by the spring force applied to the ejecting roller.
Therefore, since the coin is guided by the turning pair, there are advantages that
resistance of movement is small, the coin can pass through the part between the fixed
roller and the ejecting roller even when the output power of a driving motor of the
rotating disk is reduced, and energy can be saved.
[0025] On the other hand, after the coin center passes the ejection border line and before
the coin is ejected, the circumferential surface of the coin is brought into contact
with the fixed guide, the coin and the fixed guide become a sliding pair, and the
sliding resistance between the coin and the fixed guide becomes large. Therefore,
the coin is not ejected until the resultant force of the pushing force of the ejecting
roller and the reactive force from the fixed guide exceeds the friction resistance
between the fixed guide and the coin, and the influence of the inertial force caused
by rotation together by the rotating disk is practically eliminated. As a result,
the ejecting direction of the coin is the direction of the vector of the resultant
force of the pushing force of the ejecting roller and the reactive force of the fixed
guide. Therefore, there are advantages that, even if the diameters of the coins are
different, the ejecting direction is not practically changed, and practical processing
in a next step is not affected.
[0026] Moreover, since a lever similar to that of prior arts can be used as the lever that
supports the ejecting roller, there is an advantage that this can be employed also
in a small dispenser.
[0027] In a preferred example of the present invention, the fixed guide is comprised of
a first straight part that forms a tangent line with respect to the fixed roller,
a second straight part that is formed on a second extension line forming an obtuse
angle with respect to an extension line of the first straight part, and a curved part
that connects the first straight part and the second straight part to each other.
[0028] In this case, furthermore, even if the ejecting direction is shifted, the coin sandwiched
and ejected by the fixed guide and the ejecting roller is guided by the curved part,
is then finally guided by the second straight part, and dispensed in the direction
along the extension line of the second straight part. Therefore, even when the coins
having different diameters are finally ejected in the same direction, there is an
advantage that the processing of a next step is not affected.
[0029] In another preferred example of the present invention, the shape of the fixed guide
is set so that the coin is in contact with both of the fixed roller and the fixed
guide in the state that the coin is sandwiched between the fixed guide and the ejecting
roller.
[0030] In this case, moreover, the coin dispenser can be manufactured at a low price, and
the coin is ejected by the ejecting roller in a state in which the coin is in contact
with both of the fixed roller and the fixed guide. Therefore, the size of the fixed
guide can be reduced, and as a result, there is an advantage that the coin dispenser
can be downsized.
BRIEF DESCRIPTION OF THE DRAWINGS
[0031]
FIG. 1 is an explanatory drawing of dispensing of a small-diameter coin by a first
prior art.
FIG. 2 is an explanatory drawing of dispensing of a large-diameter coin by the first
prior art.
FIG. 3 is an explanatory drawing of a second prior art.
FIG. 4 is a vertical cross-sectional view of a coin dispenser of a first embodiment
of the present invention.
FIG. 5 is a plan view of a state in which a storing bowl of the coin dispenser of
the first embodiment of the present invention is removed.
FIG. 6 is a plan view of the coin dispenser of the first embodiment of the present
invention (only the storing bowl and pushers of a rotating disk are shown, and others
are not shown).
FIG. 7 is an explanatory drawing of a hopper of the coin dispenser of the first embodiment
of the present invention.
FIG. 8 is a perspective view of a fixed guide of the coin dispenser of the first embodiment
of the present invention.
FIG. 9 is an explanatory drawing of working (guiding by outlet guide upon forward
rotation) of the coin dispenser of the first embodiment of the present invention.
FIG. 10 is an explanatory drawing of working (during entrance upon forward rotation)
of the coin dispenser of the first embodiment of the present invention.
FIG. 11 is an explanatory drawing of working (upon ejection upon forward rotation)
of the coin dispenser of the first embodiment of the present invention.
FIG. 12 is a plan view (during entrance upon forward rotation) of a coin dispenser
of a second embodiment of the present invention.
FIG. 13 is a perspective view of a fixed guide of the coin dispenser of the second
embodiment of the present invention.
FIG. 14 is an explanatory drawing of working (upon ejection) of the coin dispenser
of the second embodiment of the present invention.
FIG. 15 is a plan view (upon start of backward rotation) of a coin dispenser of a
third embodiment of the present invention.
FIG. 16 is a perspective view of a fixed guide of the coin dispenser of the third
embodiment of the present invention.
FIG. 17 is an explanatory drawing of working (upon ejection) of the coin dispenser
of the third embodiment of the present invention.
FIG. 18 is an explanatory drawing of working (upon dispensing) of the coin dispenser
of the third embodiment of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0032] The features and advantages of the invention will be more clearly understood from
the following description taken in conjunction with the accompanying drawings.
[First Embodiment]
[0033] A present first embodiment is an example of a coin dispenser that can dispense 1-yen
coins 1C, 5-yen coins 5C, 10-yen coins 10C, 50-yen coins 50C, 100-yen coins 100C,
and 500-yen coins 500C of Japanese coins. In other words, this is an example of the
coin dispenser that can dispense the coins in a range from a small diameter coin SC
having a diameter of 20 millimeters of the 1-yen coin 1C to a maximum diameter coin
LC having a diameter of 26.5 millimeters of the 500-yen coin one by one.
[0034] However, the present invention is not limited to the above described denominations,
but can be also applied to foreign coins, play medals, etc.
[0035] For the convenience of explanation, except for the cases in which coins of particular
denominations are explained, explanations will be given while using coins C as a collective
term.
[0036] As shown in FIG. 4, a coin dispenser 100 has a function to sort the 1-yen coin 1C
to the 500-yen coin 500C, which are in bulk, and then eject the coins one by one.
In the present first embodiment, the coin dispenser 100 roughly has: a frame 102,
a base 104, a storing bowl 106, a rotating disk 108, a coin guiding wall 110, regulating
pins 112, an outlet guide 114, a fixed-side device 118 and an ejecting roller 120
constituting a hopper 116, a coin detector 122, and a coin outlet 124. The frame 102,
the base 104, the storing bowl 106, the rotating disk 108, the coin guiding wall 110,
the regulating pins 112, the ejecting roller 120 constituting part of the hopper 116,
the coin detector 122, and the coin outlet 124 are conventionally publicly known structures.
The invention of the present application relates to the structure of the fixed-side
device 118.
[0037] First, the frame 102 will be explained mainly with reference to FIG. 4.
[0038] The frame 102 has a function that functional parts such as the base 104, the storing
bowl 106, etc. are attached thereto, and the frame 102 in the present first embodiment
has a hollow rectangular box shape made of a metal plate.
[0039] An upper-surface opening of the frame 102 is covered with the base 104 having the
shape of a rectangular plate.
[0040] An electric motor 123 which is equipped with a decelerator and can be rotated forward
and backward is fixed to a back side of the base 104, and an output shaft 125 thereof
passes through a circular through hole 128 formed in the base 104 and projects to
the upper side of the base 104. If coin jamming occurs, the electric motor 123 is
rotated backward for a predetermined period of time and by a predetermined number
of rotations, thereby contributing to automatic elimination of the coin jamming.
[0041] The base 104 is horizontally disposed in the present first embodiment, but may be
disposed to be tilted.
[0042] Next, the base 104 will be explained mainly with reference to FIG. 4.
[0043] The base 104 has a function that the coins C are pushed and moved on an upper surface
thereof by the rotating disk 108. The base 104 is a flat plate made of stainless steel
or a resin having abrasion resistance properties, and an upper surface thereof is
formed to have predetermined flatness.
[0044] A coin peripheral guiding plate 126 which forms the coin guiding wall 110 and has
a predetermined thickness is closely fixed to the upper surface of the base 104.
[0045] Therefore, the base 104 can be replaced by another mechanism that has a similar function.
[0046] Next, the storing bowl 106 will be explained mainly with reference to FIG. 4.
[0047] The storing bowl 106 has a function to store many coins C in bulk. In the present
first embodiment, the storing bowl 106 has an approximately vertical tubular shape
made of resin, and the inside of the tube is formed into a coin storing unit 121 extending
in the vertical direction. The coin storing unit 121 is formed so that a horizontal
cross section of an upper portion 106A is rectangular and that a horizontal cross
section of a lower portion 106U is formed into a circular bottom hole 130. An intermediate
portion 106M between the upper portion 106A and the lower portion 106U is formed into
a slope on which the coins C can slide.
[0048] In a lower end part of the storing bowl 106, an attachment part 132 projecting in
a lateral direction like a flange is formed, and the storing bowl 106 is fixed to
the base 104, specifically, to the coin peripheral guiding plate 126 by using this
attachment part 132.
[0049] Therefore, the storing bowl 106 can be changed to another device that has a similar
function.
[0050] Next, the rotating disk 108 will be explained mainly with reference to FIGs. 4 and
5.
[0051] The rotating disk 108 has a function to be rotated at a predetermined speed, stir
the coins C in the storing bowl 106, push and rotate together the coins C fallen into
through holes 136 formed at eccentric positions, and eliminate coin jamming by backward
rotation if coin jamming occurs.
[0052] In the present first embodiment, the rotating disk 108 is disposed in the bottom
hole 130 of the storing bowl 106, is rotated forward counterclockwise in FIG. 5 at
a predetermined speed upon dispensing of the coins C by a direct-current electric
motor 123 fixed to the back side of the base 104, and is rotated backward at a predetermined
speed clockwise, which is in the opposite direction, if coin jamming occurs.
[0053] The rotating disk 108 has a stirrer 134 having a polygonal pyramid shape at the center
thereof, stirs the coins C by rotating in the bottom hole 130, and facilitates fall
of the coins C into the through holes 136.
[0054] The rotating disk 108 has pushers 140 on back sides of respective ribs 138 between
the through holes 136.
[0055] The pusher 140 undergoes rotary movement in a circular storage hole 142 of the coin
peripheral guiding plate 126, which is closely fixed to the upper surface of the base
104 and has a predetermined thickness. As shown in FIG. 5, a pushing front surface
144 thereof has a curved shape so as to be retreated from a rotating axis RA side
of the rotating disk 108 to a rotating-direction rear position side toward a circumferential
edge side. Specifically, the pusher 140 is comprised of a first pusher 140A close
to the rotating axis RA side and a second pusher 140B close to the circumferential
edge side. An arc-shaped first relief groove 146A is formed in the rotating axis RA
side of the first pusher 140A, and a second relief groove 146B is formed between the
first pusher 140A and the second pusher 140B so that a first regulating pin 112A and
a second regulating pin 112B, which will be described later, can pass therethrough.
The front surface of the first pusher 140A is a first pushing front surface 144A,
and the front surface of the second pusher 140B is a second pushing front surface
144B.
[0056] Therefore, while the coin C which has fallen into the through hole 136 is brought
into contact with and supported by the base 104 by the surface thereof and is guided
by the coin guiding wall 110 of the storage hole 142, the coin C is pushed by the
first pusher 140A by the rotation of the rotating disk 108 and is rotated together
with the rotating disk 108 in a moving passage MP. Part of the coin guiding wall 110
is cut out approximately by a length two times the diameter of the small-diameter
coin SC to form an outlet opening 148. When the coin C reaches the outlet opening
148, pushing of the coin C is switched to that by the second pusher 140B, and the
coin C is moved to the hopper 116 while guiding and pushing the coin by the outlet
guide 114 and the ejecting roller 120.
[0057] On the other hand, the coin C that is rotated together with and moved by the rotating
disk 108 without being guided by the coin guiding wall 110 is ejected from the base
104 and is forcibly guided in the circumferential direction of the rotating disk 108,
in other words, to the upper side of FIG. 5 by the later-described first regulating
pins 112 (the first regulating pin 112A and the second regulating pin 112B) positioned
in the moving passage MP of the coins C.
[0058] If coin jamming occurs, the rotating disk 108 is rotated backward. As a result of
this backward rotation, a rear surface tip 150E of a back side 150 of the second pusher
140B pushes the circumferential surface of the coin C and moves the coin in the opposite
direction of that of forward rotation.
[0059] Next, the coin guiding wall 110 will be explained mainly with reference to FIG. 4
to FIG. 6.
[0060] The coin guiding wall 110 has a function to guide the circumferential surface of
the coin C, which is rotated together by the rotating disk 108. In the present first
embodiment, the coin guiding wall 110 is an inner wall surface of the approximately
circular storage hole 142 formed in the coin peripheral guiding plate 126, which is
formed into a rectangle approximately same as the base 104 and has a predetermined
thickness, specifically, a thickness slightly larger than the thickness of the thickest
coin C among the coins C serving as handling targets; and part thereof is cut to form
the outlet opening 148. In other words, the coin guiding wall 110 has a C-shape, and
the outlet opening 148 is formed to be about 1.5 times the diameter of the 500-yen
coin 500C, which is the maximum diameter coin in the present first embodiment. Specifically,
the outlet opening 148 is a slit-like opening formed by an upstream-side end 110E
and a downstream-side end 110L of the coin guiding wall 110.
[0061] The coin peripheral guiding plate 126 is closely fixed to the upper surface of the
base 104, and the lower surface of the attachment part 132 of the storing bowl 106
is detachably closely fixed to the upper surface of the coin peripheral guiding plate
126. In this state, the rotating axis RA and the axial cores of the bottom hole 130
and the storage hole 142 are disposed to mutually match. In other words, the vertical
axes of the rotating disk 108, the bottom hole 130, and the storage hole 142 are mutually
the same. The diameter of the rotating disk 108 is formed to be slightly smaller than
the diameter of the storage hole 142.
[0062] While the coin C which has fallen into the through hole 136 is pushed by the pusher
140 in the state in which the lower surface thereof is supported by the base 104 in
the above described manner, the circumferential surface thereof is guided by the coin
guiding wall 110, and the coin is moved in the moving passage MP. In other words,
the moving passage MP has an approximately circular ring shape.
[0063] Therefore, the coin peripheral guiding plate 126 is only required to have a function
to guide the coins C so that the coins C are guided by the coin guiding wall 110 and
moved in the moving passage MP.
[0064] The base 104 and the coin peripheral guiding plate 126 may be integrally formed.
[0065] Next, the regulating pins 112 will be explained mainly with reference to FIG. 6.
[0066] The regulating pins 112 have a function to guide the coin C, which is rotated together
by the rotating disk 108, in the circumferential direction of the rotating disk 108,
in other words, to the outlet opening 148 side and have a function to be pushed downward
by the coin C, which is pushed by the back side 150 of the pusher 140, and allow the
coin C to move in the opposite direction in the moving passage MP when the rotating
disk 108 is rotated backward. In the present first embodiment, the regulating pins
are comprised of the first regulating pin 112A and the second regulating pins 112B
elastically projecting from the upper surface of the base 104. However, if the coin
C moves by itself toward the outlet opening 148 side by centrifugal force, the regulating
pins 112 are not necessarily required, and the regulating pins 112 can be arbitrarily
installed.
[0067] Each of the first regulating pin 112A and the second regulating pin 112B is a cylinder
fixed to rise from a second end of a plate spring (not shown) having a first end fixed
to the back side of the base 104. The head of the cylinder projects to above the base
104 from a through hole formed in the base 104, but projects by a degree that the
head does not abut the back side of the rotating disk 108. A slope 152 (first slope
152A, second slope 152B) tilted so that the component force that pushes the pin into
the base 104 is caused to work by the coin C pushed in the opposite direction in the
moving passage MP is formed on the head thereof. The shape of the head employs, for
example, the invention disclosed in Japanese Utility Model No.
2594435.
[0068] In the present first embodiment, a first extension line EA of the first slope 152A
toward the circumferential direction of the rotating disk 108 and a second extension
line EB of the second slope 152B toward the center side of the rotating disk 108 are
formed to intersect with each other by an obtuse angle Z. When the coin C (in the
present first embodiment, 1-yen coin 1C) is rotated together in the opposite direction
by the back side 150 of the pusher 140 upon backward rotation of the rotating disk
108 and abuts the second slope 152B, the force toward the axis RA side works with
respect to the 1-yen coin 1C. As a result, the 1-yen coin 1C is brought into contact
with the first slope 152A and the second slope 152B and then is moved over the first
regulating pin 112A and the second regulating pin 112B on which they are formed, thereby
carrying out continuous backward rotation of the rotating disk 108. In a case in which
a bisector BIS of the obtuse angle Z and a straight line FL which passes through the
axis RA orthogonally intersect with each other, the center 1CC of the 1-yen coin 1C
is set to be positioned on the bisector BIS in the vicinity of the intersecting part
(this is the same also in cases of other denominations). When formed in this manner,
even in a case in which the coin C abuts the first slope 152A or the second slope
152B, the component force that works from the abutting first slope 152A or the second
slope 152B causes the coin C to be brought into contact with both of the first slope
152A and the second slope 152B approximately uniformly, and large force is prevented
from working on part of the circumferential surface of the coin C. Therefore, there
is an advantage that dents are not formed on the coin C.
[0069] Therefore, when the coin C is pushed by the pusher 140 upon forward rotation of the
rotating disk 108 and collides with the first regulating pin 112A and the second regulating
pin 112B, while the coin C is pushed by the pusher 140, the coin C is guided by the
first regulating pin 112A and the second regulating pin 112B and guided toward the
outlet opening 148. When the rotating disk 108 is rotated backward, the coin C pushed
by the back side 150 of the pusher 140 is placed over the first slope 152A and the
second slope 152B at the heads of the first regulating pin 112A and the second regulating
pin 112 and is moved over the first regulating pin 112A and the second regulating
pin 112B. Therefore, the coin C is kept being pushed by the back side 150 of the pusher
140 and is rotated together in the moving passage MP in the opposite direction of
the forward-rotation direction.
[0070] Next, the outlet passage 153 will be explained mainly with reference to FIG. 6.
[0071] The outlet passage 153 is a passage through which the coin C moved from the outlet
opening 148 can be moved to the later-described coin outlet 124 and is formed to be
continued to the downstream of the outlet opening 148. Therefore, the outlet passage
153 is not required to be formed into a channel shape of which three sides are surrounded
or into a rectangular shape of which four sides are surrounded, and the outlet passage
153 is only required to guide at least the lower surface of the coin C. In the present
first embodiment, the outlet passage 153 is defined by the upper surface of the base
104, and part of a side wall thereof is defined by a fixed guide 164 of the fixed-side
device 118.
[0072] Therefore, the coin C moved from the outlet opening 148 passes through the outlet
passage 153 and is released from the later-described coin outlet 124.
[0073] Next, the outlet guide 114 will be explained mainly with reference to FIG. 5.
[0074] The outlet guide 114 has a function to guide the coin C toward the hopper 116 upon
forward rotation of the rotating disk 108 and, upon backward rotation of the rotating
disk 108, to guide the coin C and returns the coin into the storage hole 142. The
outlet guide 114 is comprised of a fan-shaped outlet guide plate 154 positioned in
the lateral side in the upstream-side end 110E side of the outlet opening 148. The
outlet guide plate 154 is a fan-shaped plate in the present first embodiment and is
fixed by rotatably attaching a first end thereof to a fixed shaft 156, which rises
from the base 104, and causing a screw 160 to penetrate through a long hole 158 formed
in an arc shape about the fixed shaft 156 and to be screwed in the base 104.
[0075] In a case in which the rotating disk 108 is rotated forward in the manner shown in
FIG. 9, the 1-yen coin 1C is pushed against the outlet guide plate 154 and the ejecting
roller 120 by the second pusher 140B, the coin C is pushed toward the later-described
fixed-side device 118 by resultant force F3 of pushing force F1 from the second pusher
140B toward the coin center 1CC and reactive force F2 from the ejecting roller 120
toward the coin center 1CC while the coin is guided by the ejecting roller 120, the
coin C is pushed into the part between the fixed-side device 118 and the ejecting
roller 120 (FIG. 10), and the coin C is finally sandwiched and ejected by the fixed
guide 164 and the ejecting roller 120.
[0076] When the rotating disk 108 is rotated backward, the 1-yen coin 1C is guided by the
outlet guide plate 154 and is returned into the storage hole 142 so that the rotating
disk 108 can be continuously rotated backward, and coin jamming can be effectively
eliminated.
[0077] Next, the hopper 116 will be explained mainly with reference to FIG. 5 and FIG. 7.
[0078] The hopper 116 has a function to eject the coin C, which is pushed in the circumferential
direction of the rotating disk 108 by the second pushing front surface 144B of the
pusher 140, by spring force of an elastic part. In the present first embodiment, the
hopper 116 is comprised of the fixed-side device 118 and the ejecting roller 120.
[0079] First, the fixed-side device 118 will be explained.
[0080] The fixed-side device 118 has a function to receive the coin C, which has been pushed
by the pusher 140 and pushed out to the outlet opening 148, and guide the coin in
the circumferential direction of the rotating disk 108, in other words, has a function
to define one side of the outlet passage 153 and a function to sandwich and eject
the coin C together by the ejecting roller 120. In the present first embodiment, the
fixed-side device 118 is comprised of a first fixed roller 162 serving as a fixed
roller 161 and the first fixed guide 164 serving as a fixed guide 163.
[0081] The first fixed roller 162 is not completely fixed and is preferred to be set so
as to be slightly moved and buffer excessive force when the excessive force is applied
in the later described manner. This is for improving the durability of the dispenser.
[0082] In the present first embodiment, the first fixed roller 162 is projecting upward
from a first lever 168 rotatably supported by a second supporting shaft 166 projecting
downward to the back side of the base 104, and is a ball bearing roller 172, which
is penetrating through a through hole (not shown) formed in the base 104 and is rotatably
supported by a tip of a third supporting shaft 170 positioned in the upper side of
the base 104. Specifically, an inner race of the ball bearing roller 172 is fixed
to the third supporting shaft 170, and an outer race thereof is utilized as a roller.
The first lever 168 is biased clockwise in FIG. 5 and FIG. 7 by the spring force of
an elastic part, which is a first spring 174 in the present first embodiment. At the
position of FIG. 5, in other words, at the position adjacent to the downstream-side
end 110L of the storage hole 142, turning of the first lever 168 is stopped and maintained
in a still state by a first stopper 176.
[0083] At this still position, the inner circumferential surface of the circumferential
surface of the ball bearing roller 172 is disposed on a virtual circle of the storage
hole 142 so as to form part of the inner surface of the storage hole 142.
[0084] The spring force of the first spring 174 is set so that, when the coin C is collided
in a normal case, the first spring 174 is not moved, but is slightly moved for relief
when the force larger than the normal case works. This is for a reason that even slight
movement for relief can buffer the overload caused by the coin C and contributes to
improvement of the durability of the dispenser.
[0085] Next, the first fixed guide 164 will be explained mainly with reference to FIG. 8.
[0086] The first fixed guide 164 has a function to guide the coin C, which has been guided
by the first fixed roller 162, in a predetermined direction and a function to sandwich
the coin C between the guide and the ejecting roller 120 and finally eject the coin.
In the present first embodiment, a first straight part 178 is formed in order to define
part of the outlet passage 153.
[0087] The first straight part 178 is formed so that an extension line EL thereof forms
an acute angle A of about 30 degrees with respect to a perpendicular line VL passing
through the rotating axis RA shown in FIG. 5, and the extension line EL is close to
the circumferential surface of the first fixed roller 162. Furthermore, the circumferential
surface of the first fixed roller 162 is disposed so as to be close to a tangent line
CL with respect to the coin guiding wall 110 in the downstream-side end 110L of the
coin guiding wall 110 and form an acute angle B close to 90 degrees with respect to
the extension line EL.
[0088] A tip 164T of the first straight part 179 in the rotating disk 108 side is disposed
so as to be positioned on or close to a first straight line AL connecting a second
rotating axis RB of the first fixed roller 162 and a third rotating axis RC of the
ejecting roller 120 positioned at a still position SP.
[0089] Therefore, the tip 164T of the first fixed guide 164 in the rotating disk 108 side
is formed into the shape of a blade tip of a knife by the first straight part 178
and an arc-shaped portion 165 for avoiding the first fixed roller 162.
[0090] In the present first embodiment, the first fixed guide 164 is formed to be separated
from the base 104 and the coin peripheral guiding plate 126, but may be integrally
formed with one of or both of them.
[0091] Next, the ejecting roller 120 will be explained mainly with reference to FIG. 7.
[0092] The ejecting roller 120 has a function to eject the coin C, which has been pushed
into the outlet passage 153 and is in contact with the first fixed guide 164. In the
present first embodiment, the ejecting roller 120 is a roller which is fixed upward
from an end of a second lever 182 of which part is rotatably supported by a fourth
supporting shaft 179 projecting downward from the back side of the base 104, and the
roller is rotatably attached to an upper end of a fifth supporting shaft 181, which
penetrates through an arc-shaped long hole 180 formed in the base 104 like an arc
about the fourth supporting shaft 179 and is projecting to the upper side of the base
104. In the present first embodiment, the ejecting roller 120 is a ball bearing roller
183. As well as the ball bearing roller 172, the outer race of the ball bearing roller
183 is also utilized as a roller.
[0093] Therefore, the ejecting roller 120 can be changed to another device having a similar
function.
[0094] The second lever 182 is elastically biased so as to get close to the fixed-side device
118 side by a second spring 190 of which ends are stopped by a first stopper part
186 formed at part thereof and by a second stopper part 188 projecting downward from
the base 104. The second lever 182 is stopped by a second stopper 192, which is projecting
downward from the back side of the base 104, so as to be still at a position at which
a straight-line distance L between the tip 164T of the first fixed guide 164 and the
ejecting roller 120 is slightly smaller than an expected minimum diameter of dispensed
coins. Specifically, the shortest distance L between the tip 164T of the first fixed
guide 164 and the ejecting roller 120 forms an entrance gap 194, which is set to be
slightly smaller than the diameter of the 1-yen coin 1C, between the tip 164T and
the ejecting roller 120.
[0095] Therefore, as shown in FIG. 11, from a point immediately after the center 1CC of
the 1-yen coin 1C pushed by the pusher 140 crosses an ejecting border line DDL connecting
a first contact point PA of the tip 164T of the first fixed guide 164 and the 1-yen
coin 1C and a second contact point PB of the ejecting roller 120 and the circumferential
surface of the 1-yen coin 1C, the ejecting roller 120 ejects the coin by the spring
force of the second spring 190. This ejecting direction is the direction of the vector
of resultant force F13 of pushing force F11 by the ejecting roller 120 and reactive
force F12 from the first fixed guide 164.
[0096] Specifically, the forward rotation of the rotating disk 108 causes the 1-yen coin
1C to be pushed by the second pusher 140B and be guided by the outlet guide plate
154, and the 1-yen coin 1C is guided by the ejecting roller 120 and moved toward the
entrance gap 194 (FIG. 9). When the rotating disk 108 is further rotated, the coin
C is pushed into the entrance gap 194 by the pushing force of the second pusher 140B
(FIG. 7), and the ejecting roller 120 is moved in the direction to get away from the
first fixed roller 162 against the spring force of the second spring 190. In this
process, the contact of the 1-yen coin 1C is switched from that by the first fixed
roller 162 to that by the tip 164T of the first fixed guide 164. Specifically, the
entrance gap 194 is widened, the first contact point PA is formed at the contact point
with the tip 164T of the first fixed guide 164, and the coin center 1CC of the 1-yen
coin 1C passes through the ejection border line DDL connecting the first contact point
PA and the second contact point PB; immediately after this, the 1-yen coin 1C is ejected
by the spring force of the second spring 190 (FIG. 11). The ejected 1-yen coin 1C
is dispensed from coin outlet 124 through the outlet passage 153. In the process of
this dispensing, the coin C is detected by the coin detector 122.
[0097] Next, the coin detector 122 will be explained.
[0098] The coin detector 122 has a function to detect the coin C, which is ejected by the
hopper 116, and an electromagnetic metal sensor 196 is used in the present first embodiment.
Therefore, the coin detector 122 can be changed to another system that has a similar
function such as a photoelectric sensor, a mechanical sensor, or the like.
[0099] In the present first embodiment, the coin detector 122 is disposed in the middle
of the outlet passage 153, but may be disposed in the downstream of the coin outlet
124.
[0100] In the end, the coin outlet 124 will be explained with reference to FIG. 5.
[0101] The coin outlet 124 has a function to feed coin C from the base 104, is not particularly
required to be formed into a slit-shaped passage or the like, and the coin outlet
124 is formed at a downstream end of the outlet passage 153 in the present first embodiment.
In other words, an end of the base 104 opposed to the outlet passage 153 is the coin
outlet 124.
[0102] Next, working of the coin dispenser 100 will be explained also with reference to
FIG. 9 to FIG. 11.
[0103] When the coins of diameters within a predetermined range are to be dispensed by one
dispenser without part replacement and position adjustment, the minimum diameter coin
SC is the most problematic. Therefore, the 1-yen coin 1C will be taken as an example
for explanation.
[0104] Working is different in a case in which the 1-yen coin 1C is moved along the coin
guiding wall 110 of the storage hole 142 and a case in which the coin C is guided
and dispensed by the regulating pins 112. Therefore, the explanation will be given
separately in the cases.
[0105] First, the case in which the 1-yen coin 1C is moved along the coin guiding wall 110
will be explained.
[0106] The coin C in the storing bowl 106 is dropped into the through hole 136 by the rotation
of the rotating disk 108; the surface of the front side or back side thereof is brought
into contact with and supported by the base 104; and, while the coin is pushed by
the first pusher 140A and guided by the coin guiding wall 110 which is the circumferential
wall of the storage hole 142, the coin is moved to the outlet opening 148 side (FIG.
10).
[0107] The coin C, which has reached the outlet opening 148, is guided by the outlet guide
plate 154 subsequent to by the upstream-side end 110E (FIG. 6), is then brought into
contact with the ejecting roller 120 positioned at a standby position SP and guided
to the first fixed roller 162 side (FIG. 9), and is pushed to the entrance gap 194
(FIG. 10).
[0108] Further rotation of the rotating disk 108 causes the 1-yen coin 1C to be further
pushed into the entrance gap 194 by the second pushing front surface 144B. As a result,
the coin is moved in the circumferential direction of the rotating disk 108 along
the arc-shaped circumferential surface of the first fixed roller 162. Therefore, the
ejecting roller 120 is turned clockwise in FIG. 5, and the entrance gap 194 is further
expanded.
[0109] Then, the 1-yen coin 1C is further moved in the circumferential direction of the
rotating disk 108, the contact between the circumferential surface thereof and the
fixed-side device 118 is switched to that from the first fixed roller 162 to the tip
164T of the first fixed guide 164, and, immediately after the center 1CC of the 1-yen
coin 1C passes the ejection border line DDL connecting the first contact point PA
of the tip 164T of the first fixed guide 164 and the 1-yen coin 1C and the second
contact point PB of the ejecting roller 120 and the circumferential surface of the
1-yen coin 1C, the coin receives the ejecting force from the ejecting roller 120.
Then, the ejecting roller 120 pushes the circumferential surface of the 1-yen coin
1C by the spring force of the second spring 190, and, as described above, the 1-yen
coin 1C is ejected in the direction of the vector of the resultant force F13 of the
pushing force F11 and the reactive force F12 (FIG. 11).
[0110] The ejected 1-yen coin 1C is dispensed from the coin outlet 124 through the outlet
passage 153.
[0111] Next, the case in which the 1-yen coin 1C is guided by the first regulating pin 112A
and the second regulating pin 112B and pushed into the entrance gap 194 without being
guided by the coin guiding wall 110 will be explained.
[0112] In this case, the 1-yen coin 1C is moved to the entrance gap 194 without contacting
the outlet guide plate 154, is then guided by the first fixed roller 162 as described
above, and is then ejected by the ejecting roller 120 in a state in which the coin
is in contact with the tip 164T of the first fixed guide 164.
[Second Embodiment]
[0113] Next, a second embodiment will be explained with reference to FIG. 12 to FIG. 14.
[0114] The second embodiment is an example in which the fixed-side device 118 is comprised
of a second fixed roller 200 serving as the fixed roller 161 and a second fixed guide
202 serving as the fixed guide 163 and is the same as the first embodiment except
for the second fixed roller 200 and the second fixed guide 202. Therefore, only different
configurations and working will be explained.
[0115] The second fixed roller 200 employs a roller having a diameter slightly larger than
that of the first fixed roller 162. Specifically, the second fixed roller 200 utilizes
the outer race of a standardized ball earing roller as a roller, thereby enabling
manufacturing at low cost.
[0116] Since the diameter of the second fixed roller 200 is larger, a second extension line
EL2 which is the extension line of a first straight part 204 corresponding to the
first straight part 178 of the second fixed guide 202 forms an angle A, which is the
same acute angle as that of the first embodiment, with respect to the perpendicular
line VL. However, a tip 204T thereof is positioned to be more distant from the first
straight line AL compared with the first embodiment.
[0117] Because of the difference of the layout of the tip 204T, the second embodiment is
configured so that the 1-yen coin 1C is ejected by the ejecting roller 120 in a state
in which the 1-yen coin 1C is in contact with both of the second fixed roller 200
and the tip 204T of the second fixed guide 204 (FIG. 11).
[0118] Next, working of the second embodiment will be explained.
[0119] As well as the first embodiment, since the 1-yen coin 1C is pushed into the entrance
gap 194 by the second pushing front surface 144B, the 1-yen coin 1C is moved in the
circumferential direction of the rotating disk 108 along the arc-shaped circumferential
surface of the second fixed roller 200. Therefore, the ejecting roller 120 is turned
clockwise in FIG. 12, and the entrance gap 194 is further expanded. Then, the 1-yen
coin 1C is further moved in the circumferential direction of the rotating disk 108,
and, immediately after the center 1CC of the 1-yen coin 1C passes the ejection border
line DDL connecting the first contact point PA of the circumferential surface thereof
and the second fixed roller 200 and the second contact point PB of the ejecting roller
120 and the circumferential surface of the 1-yen coin 1C, the 1-yen coin 1C receives
ejecting force from the ejecting roller 120 (FIG. 14).
[0120] Then, in a state in which the circumferential surface of the 1-yen coin 1C is in
contact with the tip 204T of the first straight part 204 and the second fixed roller
200, the ejecting roller 120 pushes the circumferential surface of the 1-yen coin
1C by the spring force of the second spring 190 to eject it (FIG. 14).
[0121] More specifically, immediately after the center 1CC of the 1-yen coin 1C passes the
ejection border line DDL connecting a middle point PM of the contact point of the
second fixed roller 200 and the circumferential surface of the 1-yen coin 1C and the
contact point of the tip 204T and the circumferential surface of the 1-yen coin 1C
and the second contact point PB of the ejecting roller 120 and the circumferential
surface of the 1-yen coin 1C, the 1-yen coin 1C receives ejecting force from the ejecting
roller 120. Then, the ejecting roller 120 pushes the circumferential surface of the
1-yen coin 1C by the spring force of the second spring 190 to eject the coin. The
ejecting direction thereof is the direction of the vector of the resultant force F23
of the pushing force F21 from the ejecting roller 120 and the reactive force F22 from
the second fixed roller 200 and the tip 204T.
[0122] Then, the case in which the 1-yen coin 1C is guided by the regulating pins 112A and
112B and pushed into the entrance gap 194 without being guided by the coin guiding
wall 110.
[0123] In this case, without being brought into contact with the outlet guide plate 154,
the 1-yen coin 1C is moved to the entrance gap 194 and is then ejected by the ejecting
roller 120 in a state in which the coin is in contact with the tip 204T of the first
straight part 204 and the second fixed roller 200 as described above.
[Third Embodiment]
[0124] Next, a third embodiment of the present invention will be explained with reference
to FIG. 15 to FIG. 18.
[0125] The third embodiment is a modification of the second embodiment, wherein a third
fixed guide 206 serving as the fixed guide 163 adds a second straight part 208 and
a curved part 210 to the second fixed guide 202.
[0126] In other words, the third fixed guide 206 has a function to guide the coin C, which
has been guided by the second fixed roller 200, to a predetermined direction and a
function to sandwich the coin C between the third fixed guide and the ejecting roller
120 and finally eject the coin. In the present third embodiment, sequentially from
the second fixed roller 200 side, the first straight part 204, the curved part 210,
and the second straight part 208 are formed.
[0127] The first straight part 204 has the same configuration as that of the second embodiment.
[0128] The second straight part 208 is formed in parallel to the perpendicular line VL,
which passes through the rotating axis RA in FIG. 15. Therefore, an extension line
EL2 of the second straight part 208 is configured to form an obtuse angle C equal
to or more than 90 degrees and less than 180 degrees with the extension line EL of
the first straight part 204. In other words, the coin C, which is moved along the
first straight part 204, is guided to the curved part 210 and is then dispensed from
the coin outlet 124 while being guided by the second straight part 208.
[0129] The curved part 210 is formed into an arc shape, which smoothly connects the first
straight part 204 and the second straight part 208 to each other.
[0130] The second straight part 208, which determines the final dispensing direction of
the coin C, is arbitrarily determined by the dispensing direction of the coin C and
is not required to be parallel to the perpendicular line VL, but may be a curved line.
[0131] In the third embodiment, an outlet roller 212 is used in the outlet guide 114 instead
of the outlet guide plate 154 of the first and second embodiments.
[0132] The outlet roller 212 is rotatably supported by a sixth supporting shaft 216 provided
to rise upward from the base 104, is disposed in the middle between the upstream-side
end 110E of the coin guiding wall 110 and the ejecting roller 120 and in the lateral
side of the outlet passage 153, and is disposed to be away by a predetermined distance
from a second straight line L2, which forms a tangent line with the ejecting roller
120 positioned at the standby position SP and connects the upstream-side end 110E.
Specifically, the second straight line L2 and a cylindrical surface 214 of the outlet
roller 212 are disposed to be away from each other by the minimum distance that is
half the diameter of the outlet roller 212. The position of the outlet roller 212
is disposed at the position by which the minimum diameter coin serving as a target,
which is the 1-yen coin 1C in the present third embodiment, can be pushed by the rotating
disk 108 rotating backward, in other words, the back-side tip 150E of the pusher 140
and returned into the storage hole 142. Thus, the rotating disk 108 can be continuously
rotated backward, and coin jamming can be effectively eliminated.
[0133] Next, working of the third embodiment will be explained also with reference to FIG.
17 and FIG. 18.
[0134] The working/effects that part of the coin C is brought into contact with the second
fixed roller 200 and the second fixed guide 202 and ejected by the ejecting roller
120 are the same as those of the second embodiment. Therefore, the working/effects
of the curved part 210 and the second straight part 208 after ejection by the ejecting
roller 120 will be explained.
[0135] In the state in which the circumferential surface of the 1-yen coin 1C is in contact
with the tip 204T of the first straight part 204 and the fixed roller 200, the ejecting
roller 120 pushes the circumferential surface of the 1-yen coin 1C by the spring force
of the second spring 190 and ejects the coin toward the direction of the vector of
the resultant force F23, in other words, toward the curved part 210 (FIG. 17).
[0136] The ejected 1-yen coin 1C is guided to the curved part 210, is then guided by the
second straight part 208, and is dispensed from the coin outlet 124 in the direction
parallel to the perpendicular line VL (FIG. 18). More specifically, the 1-yen coin
1C is finally guided by the second straight part 208 and is dispensed in the direction
along the perpendicular line VL.
[0137] Since all the coins C are guided to the curved part 210 and then guided by the second
straight part 208, the coins are dispensed in the same direction along the perpendicular
line VL.