JP2005011026A - Coin change dispensing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent overcurrents from flowing through a motor by preventing any excessive load from being imposed on a motor when a rotary disc stops due to the jamming of a coin, and to prevent the jamming of a coin. <P>SOLUTION: This coin change dispensing machine is provided with a torque limiter 258 which limits a rotary toque to be transmitted from a motor 260 to a rotary disc 200 when a load torque to be generated between the driving shaft of the motor 260 and a rotary shaft 255 of the rotary disc 200 exceeds a fixed torque when the motor 260 is driven to rotate backward or forward and a one-way clutch 270 for transmitting the torque which is the fixed toque or more to the rotary disc 200 when the motor 260 is driven to rotate backward when the rotary torque of the motor 260 is limited by the torque limiter 258. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a coin payout device that includes a bucket for storing a plurality of coins and pays out coins stored in the bucket one by one.
[0002]
[Prior art]
Conventional medal payout devices are generally composed of a bucket that stores a plurality of coins, a coin sending unit that pays out coins one by one, and a base that supports these buckets and the coin sending unit. (For example, refer to Patent Document 1). In the medal payout device disclosed in Patent Document 1, a rotating disk is rotatably disposed on the lower surface of the bucket. A plurality of openings for receiving coins are formed in the annular shape of the rotating disk.
[0003]
Further, a coin delivery guide plate is fixed integrally with the rotating disk on the back surface of the rotating disk. This coin delivery guide plate is formed in a claw wheel shape, and has the same number of claws as the numerical aperture of the rotating disk. Further, the coin discharge port is provided with a coin discharge portion for paying out coins one by one.
[0004]
The coin sending guide plate moves the coin inside the claw in a direction away from the center direction of the rotating disc as the rotating disc rotates. When the moved coins are positioned in the vicinity of the coin discharge port, the coins are discharged one by one by the coin discharge unit.
[0005]
[Patent Document 1]
JP-A-7-85333 [0006]
[Problems to be solved by the invention]
However, since the opening portion of the bucket becomes smaller from the top toward the bottom, there is a situation in which the weight of a plurality of stored coins is concentrated on the opening portion of the rotating disk disposed at the bottom of the bucket. In addition, there was a situation where irregular coins with different diameters than normal coins were mixed in the opening part of the rotating disk, so that the coin received in the opening of the rotating disk was a coin Sometimes clogged near the discharge. When the coin is jammed and the rotating disk stops, there is a problem that a load is applied to the motor that rotates the rotating disk and an overcurrent flows through the motor.
[0007]
On the other hand, in order to solve the above problem, there is a mechanistic measure that causes the rotation of the drive shaft of the motor to idle by a torque limiter when the rotating disk stops due to a coin being jammed. According to this, when the rotating disk stops due to clogging of coins, the rotation of the drive shaft of the motor is idled by the above-mentioned mechanistic measures, so that a great load is not applied to the motor and an overcurrent is generated. It stops flowing.
[0008]
However, although the above measures can prevent an overcurrent from flowing through the motor, there is a problem that the coin jam is not released. In order to solve this problem, there is a measure for reversing the rotational drive of the motor to release the coin jam. However, since the torque limiter is disposed between the motor drive shaft and the rotary disk rotation shaft, if a load torque exceeding a predetermined level is applied to the torque limiter due to a coin jam, the rotation of the motor drive shaft Slipped and the coin jam was not released properly.
[0009]
Therefore, the present invention has been made in view of the above points, and when the rotating disk stops due to clogging with coins, an excessive current is applied to the motor by preventing a great load from being applied to the motor. It is an object of the present invention to provide a coin payout device capable of preventing a coin jam and releasing a coin jam.
[0010]
[Means for Solving the Problems]
In order to solve the above-described problems, the invention according to the present application has a bucket (for example, bucket 100) that accommodates a plurality of coins (for example, coin 500), and a plurality of openings that are arranged at the bottom of the bucket and receive the coin in an annular shape. A formed rotating disk (for example, the rotating disk 200) and driving means (for example, a motor 260) for rotationally driving the rotating disk are provided, and the rotating disk is rotated by the driving means and received in the opening. A coin payout device for sequentially paying out coins, and when the drive means is driven to rotate forward or backward, the load torque generated between the drive shaft of the drive means and the rotary shaft of the rotary disk is constant. When the torque is exceeded, the transmission limiting means (for example, torque limiter 258) for limiting the rotational torque transmitted from the driving means to the rotating disk, and the transmission limiting means When the rotational torque transmitted to the rotating disk is limited, if the driving means is rotationally driven in the forward direction, the rotational torque of the driving means is not transmitted to the rotating disk, and the driving means is in the reverse direction. And a transmission switching means (for example, a one-way clutch 270) for transmitting a rotational torque of a certain level or more to the rotary disc when the drive means is rotationally driven.
[0011]
According to the present invention, the load torque generated between the drive shaft of the drive means and the rotary shaft of the rotary disk when the drive means is rotationally driven in the forward direction or the reverse direction (for example, forward rotation). When the torque exceeds a certain torque, the transmission limiting means limits the rotational torque transmitted from the driving means to the rotating disk, and when the transmission limiting means limits the rotational torque of the driving means, the driving means When the rotation is driven in the reverse direction, the transfer switching means transmits a torque greater than a certain torque to the rotating disk, so the coin payout device does not apply a great load to the motor. It is possible to prevent the overcurrent from flowing, and to release the coin jam.
[0012]
Note that the transmission limiting unit and the transmission switching unit may be disposed anywhere as long as they are between the drive shaft of the drive unit and the rotary shaft of the rotating disk. When a plurality of intermediate gears (for example, idle gears) are incorporated between the drive shaft of the drive means and the rotation shaft of the rotary disk, the transmission restriction means and the transmission switching means are the intermediate gears. You may arrange | position in either. Furthermore, the transmission limiting means may be integrally formed with a driven gear that transmits the rotation of the driving means to the rotating disk, and may be press-fitted to the rotating shaft of the rotating disk.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
(Basic configuration of coin dispensing device)
A coin payout device 1 according to the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing an example of the coin payout device 1.
[0014]
As shown in FIG. 1, the coin payout device 1 according to this embodiment includes a bucket 100, a rotating disk 200, and a base 300. The bucket 100 accommodates a plurality of coins 500. The bucket 100 is detachably attached to the base 300 via attachment screws 400.
[0015]
The base 300 is composed of a frame body that is formed obliquely at a predetermined angle. Above the base 300, the bucket 100, the rotating disk 200, and the like are disposed. The coin discharge opening 600 is a discharge opening for discharging the coin 500 received in the opening 211 of the rotating disk 200. The coin discharge opening 600 communicates with the inside of the bucket 100 behind it.
[0016]
FIG. 2 is a diagram showing the structure of the rotating disk 200 and its surroundings. As shown in FIG. 2, a rotating disk 200 driven by a motor 260 is attached to the upper surface. On the rotating disk 200, for example, about 4 to 8 circular openings 211 are annularly formed at a predetermined pitch. A circular coin receiving plate 212 is attached to the lower surface of the rotating disk 200.
[0017]
A coin delivery guide plate 213 is fixed between the rotating disk 200 and the coin receiving plate 212. The coin delivery guide plate 213 is formed in a claw wheel shape and has the same number of guide claws 214 as the number of openings 211 formed in the rotary disc 200. An outer guide plate 220 is attached around the rotating disc 200.
[0018]
The outer guide plate 220 is formed with an arc-shaped coin guide surface 215 that is slightly smaller than the diameter of the rotating disc 200 at the center. The coin 500 supported by the coin receiving plate 212 through the opening 211 is held by the guide claw 214 and is moved away from the central axis of the rotating disc 200 by the rotation of the rotating disc 200 (the coin guide surface 215 is contacted). In the direction of contact).
[0019]
FIG. 3 is a view showing the mechanism of the coin discharge unit 230. As shown in FIG. 3, the coin discharge unit 230 includes a fixed roller 231, a movable roller 232, and an outer movable roller 233. The coin discharge unit 230 is disposed in the vicinity of the coin discharge opening 600.
[0020]
The movable roller 232 and the outer movable roller 233 open and close the coin discharge opening 600 when the coin 500 is pressed. The movable roller 232 and the outer movable roller 233 are urged in a direction to close the coin discharge opening 600 by urging means such as a coil spring.
[0021]
As shown in FIG. 3, when the coin 500 reaches the opening of the coin discharge opening 600, the coin 500 displaces the positions of the movable roller 232 and the outer movable roller 233 as the guide claw 214 moves (see FIG. 3). (Shown with solid line) The coin 500 can open the coin discharge opening 600 by displacing the position of the movable roller 232. 3 indicates a state before the movable roller 232 and the outer movable roller 233 are displaced.
[0022]
When the tip of the guide claw 214 comes into contact with the coin 500, the coin 500 is at a position over the movable roller 232 and the outer movable roller 233 at the same time. As a result, the coin 500 is not subjected to the pushing action of the guide claw 214 and is ejected vigorously by the biasing means of the movable roller 232.
[0023]
Behind the coin discharge unit 230, a sensor (not shown) and a coin discharge control unit (not shown) are arranged. The sensor detects the coin 500 that passes through the coin discharge opening 600. The coin discharge control unit controls the entire coin payout device 1. When a command signal for paying out a predetermined number of coins 500 is input, the coin discharge control unit drives the motor 260 to rotate. As a result, the coins 500 are discharged from the coin discharge opening 600 one by one.
[0024]
Thereafter, the coin discharge control unit counts the number of coins 500 to be paid out based on a detection signal from the sensor. When the count of the number of payouts reaches a predetermined number, the coin payout control unit stops the rotation of the motor 260 instantaneously.
[0025]
When the number of pulses of the detection signal corresponding to the number of coins 500 to be paid out is not input, the coin discharge control unit determines that the coin 500 is clogged with the rotating disk 200 or the like and the rotating disk 200 has stopped, and the motor The rotation of 260 is reversed.
[0026]
The peripheral mechanism of the rotating disk 200 is as follows. FIG. 4 is a simplified perspective view showing a cross section of the coin payout device 1. As shown in FIG. 4, the peripheral mechanism of the rotating disk 200 mainly includes a driven gear 256 including a rotating shaft 255 of the rotating disk 200 and a motor 260 including a driving gear 261 that meshes with the driven gear 256. It is arranged. Note that a torque limiter 258 and a one-way clutch 270, which will be described later, are incorporated in the rotating shaft 255 of the driven gear 256 (shaded portion in FIG. 4).
[0027]
The rotation of the drive gear 261 is transmitted to the driven gear 256 by the rotation drive of the motor 260, and the driven gear 256 to which the rotation is transmitted rotates the rotating disk 200 via the rotation shaft 255. Details of the peripheral mechanism of the rotating disk 200 are as follows.
[0028]
FIG. 5 is a diagram showing a detailed peripheral mechanism of the rotating disk 200. As shown in FIG. 5, a rotating disk 200 is disposed inside the opening formed at the center of the cover 221. The rotation shaft 255 of the driven gear 256 is press-fitted through the mounting unit 240 into the hole 216 provided in the central portion of the rotating disk 200 disposed inside the opening. The rotary disk 200 is fixed by press-fitting the rotary shaft 255 of the driven gear 256 into the hole 216. In addition, detailed parts (for example, the outer side guide plate 220 etc.) arrange | positioned at the rotation disc 200 are abbreviate | omitted.
[0029]
The attachment unit 240 is for attaching the cover 221, the rotating disk 200, a gear unit 250 described later, and the like with a fixing member. As shown in FIG. 5, the attachment unit 240 is provided with a through hole 242 and a gear unit fixing portion 241. The through hole 242 is an opening into which the rotation shaft 255 of the driven gear 256 is inserted. The rotating shaft 255 inserted into the opening is press-fitted into the hole 216 of the rotating disk 200.
[0030]
The gear unit fixing portion 241 is a member that fixes the gear unit 250 by being fitted into a recess 257 formed in the gear unit main body 251. Specifically, as shown in FIG. 5, a claw is formed at the tip of each gear unit fixing portion 241. The gear unit 250 is fixed to the mounting unit 240 by fitting the three claws into the recess 257.
[0031]
The gear unit 250 accommodates the driven gear 256 and the drive gear 261 so as to have an appropriate positional relationship. The outside of the gear unit 250 includes a gear unit main body 251 and a side plate 252. The side plate 252 is provided with a hole 253 and a hole 254.
[0032]
The hole 253 supports the rotation shaft 255 of the driven gear 256 so as to be rotatable. A hole 259 for inserting the rotation shaft 255 is disposed on the side surface of the gear unit main body 251 at a position facing the hole 253. One end of the rotation shaft 255 is pivotally supported by the hole 253, and the other end of the rotation shaft 255 is fixed to the hole 216 via the hole 259 and the through-hole 242.
[0033]
The hole 254 is for inserting the drive shaft of the motor 260. A drive gear 261 is press-fitted into the tip of the drive shaft inserted into the hole 254. As shown in FIG. 5, the drive gear 261 contacts the driven gear 256 and is disposed in a positional relationship so as to be the same axis as the rotation shaft 255 of the driven gear 256.
[0034]
FIG. 6 is a perspective view showing the torque limiter 258. FIG. 7 is a cross-sectional view showing the torque limiter 258. The torque limiter 258 is a load generated between the driving shaft of the motor 260 and the rotating shaft 255 of the rotating disk 200 (or the rotating shaft 255 of the driven gear 256) when the motor 260 is driven to rotate in the forward direction or the reverse direction. This is a transmission limiting means for limiting the rotational torque transmitted from the motor 260 to the rotating disk 200 when the torque exceeds a certain torque. Here, in the present embodiment, the forward direction is a direction in which the coin 500 is paid out, and the reverse direction is a direction in which the coin 500 is not paid out.
[0035]
The torque limiter 258 according to the present embodiment is integrally formed with a driven gear 256 that transmits the rotational torque of the drive gear 261 to the rotating disk 200 and is press-fitted to the rotating shaft 255 of the rotating disk 200.
[0036]
Specifically, as shown in FIGS. 6 and 7, a driven gear 256 is formed on the outer periphery of the torque limiter 258. Further, the torque limiter 258 is press-fitted to the rotating shaft 255. Note that lubricating oil is sealed between the torque limiter 258 and the rotating shaft 255.
[0037]
A drive gear 261 disposed on the drive shaft of the motor 260 is in contact with the driven gear 256. Therefore, the rotational torque generated on the drive shaft of the motor 260 is transmitted to the rotational shaft 255 of the driven gear 256 as it is. If the coin 500 on the rotating disk 200 is clogged and the rotating shaft 255 of the driven gear 256 does not rotate due to the rotational torque generated on the driving shaft of the motor 260, the driving of the rotating shaft 255 of the driven gear 256 and the motor 260 is driven. A predetermined load (load torque) is applied to the shaft. In other words, a predetermined load torque is applied between the rotating shaft 255 of the driven gear 256 and the torque limiter 258 to which the same power as the drive shaft of the motor 260 is applied.
[0038]
When the load torque generated between the rotating shaft 255 and the torque limiter 258 does not exceed a certain torque, the torque limiter 258 and the rotating shaft 255 rotate integrally. That is, the torque limiter 258 prevents the rotation transmitted from the motor 260 to the rotating disk 200 from idling.
[0039]
On the other hand, when the load torque generated between the rotating shaft 255 and the torque limiter 258 exceeds a certain torque, the torque limiter 258 and the rotating shaft 255 rotate separately. That is, the torque limiter 258 idles the rotation transmitted from the motor 260 to the rotating disk 200.
[0040]
Accordingly, the torque limiter 258 has a property of transmitting the rotation generated from the motor 260 to the rotating disk 200 as it is when the load torque does not exceed a certain torque. On the other hand, the torque limiter 258 has a property of limiting the rotation transmitted from the motor 260 to the rotating disk 200 when the load torque exceeds a certain torque.
[0041]
When the torque limiter 258 limits the rotational torque transmitted from the motor 260 to the rotating disk 200 (for example, when a coin jam occurs), the one-way clutch 270 is driven to rotate in the forward direction (for example, When the motor 260 is rotating forward, the rotational torque of the motor 260 is not transmitted to the rotating disk 200, and when the motor 260 is rotationally driven in the reverse direction (for example, reverse rotation), the motor 260 is constant. It is a transmission switching means for transmitting a rotational torque greater than the torque to the rotating disk 200. As shown in FIG. 6, the one-way clutch 270 is disposed so as to have the same axis as the rotation shaft 255 of the rotating disk 200. The constant torque according to the present embodiment means the maximum load torque applied between the torque limiter 258 and the rotating shaft 255 before the torque limiter 258 idles.
[0042]
Specifically, when the coin 500 is jammed, the motor 260 is driven to rotate in the reverse direction in response to an instruction from the coin discharge control unit. When the rotational driving of the motor 260 rotates in the reverse direction, the one-way clutch 270 locks the rotating shaft 255 of the rotating disk 200, and the one-way clutch 270 is linked to the rotating shaft 255 in conjunction with the rotation of the driven gear 256. It rotates integrally and transmits the rotational torque of the motor 260 to the rotating disk 200. As a result, the one-way clutch 270 can release the coin 500 from being jammed. Hereinafter, the operation of the one-way clutch 270 will be described in detail.
[0043]
(1) When the load torque does not exceed the constant torque When the load torque does not exceed the constant torque, the torque limiter 258 does not idle regardless of the rotation direction of the motor 260. Is directly transmitted to the rotating shaft 255 of the rotating disk 200. At this time, since the one-way clutch 270 rotates at the same speed as the driven gear 256, the rotational difference between the one-way clutch 270 and the rotating shaft 255 of the rotating disk 200 is zero.
[0044]
That is, the one-way clutch 270 is not idling and is in a state where the rotation shaft 255 of the rotating disk 200 is locked and the rotation torque of the motor 260 is not transmitted. In other words, the one-way clutch 270 remains in the state when the rotary disk 200 starts to rotate.
[0045]
As described above, the one-way clutch 270 locks the rotating shaft 255 of the rotating disk 200 for the first time by slightly rotating in the locking direction from the unlocked state where the rotating shaft 255 of the rotating disk 200 is not locked. On the other hand, when the rotary shaft 255 of the rotary disc 200 is locked, the one-way clutch 270 releases the lock of the rotary shaft 255 by slightly rotating the rotary shaft 255 in the opening state. .
[0046]
(2) When the load torque exceeds a certain torque When the load torque exceeds a certain torque, the torque limiter 258 rotates idly, so that the one-way clutch 270 that rotates with the driven gear 256 and the torque limiter 258 rotate. A speed difference is generated between the rotary disk 200 of the rotating disk 200 whose driving is restricted, and the one-way clutch 270 is caused by the positive / negative of the rotation due to the speed difference (in other words, the positive / negative of the direction in which the motor 260 rotates). It will be in the said open state, or the rotating shaft 255 of the rotating disc 200 will be locked.
[0047]
That is, when the motor 260 is rotationally driven in the forward direction (the direction in which the coin 500 is paid out), the one-way clutch 270 is brought into the released state between the one-way clutch 270 and the rotating shaft 255 of the rotating disk 200. Since the speed difference is generated in the direction in which the one-way clutch is operated, the one-way clutch 270 remains in the released state or unlocks the rotating shaft 255. Therefore, the one-way clutch 270 does not transmit the rotational driving of the motor 260 to the rotating shaft 255 of the rotating disk 200.
[0048]
On the other hand, when the motor 260 is rotationally driven in the reverse direction (the direction in which the coin 500 is not paid out), the rotary shaft 255 is interposed between the one-way clutch 270 and the rotary shaft 255 of the rotary disc 200 by the one-way clutch 270. Therefore, the one-way clutch 270 keeps the rotating shaft 255 locked or locks the rotating shaft 255 for the first time. Therefore, the one-way clutch 270 transmits the rotational driving of the motor 260 to the rotating shaft 255 of the rotating disk 200.
[0049]
(Operation and effect of coin payout device)
According to the invention according to the present application, when the motor 260 is driven to rotate in the forward direction or the reverse direction, the load torque generated between the driving shaft of the motor 260 and the rotating shaft 255 of the rotating disk 200 is constant torque. When the torque limiter 258 is exceeded, the torque limiter 258 limits the rotational torque transmitted from the motor 260 to the rotating disk 200, so that the coin payout device 1 causes a large load on the motor 260 when a coin jam occurs. It is possible to prevent an overcurrent from flowing through the motor 260 by preventing the motor from being applied.
[0050]
When the torque limiter 258 limits the rotational torque of the motor 260 (when a coin jam has occurred), when the motor 260 is driven to rotate in the reverse direction, the one-way clutch 270 is rotated by the rotating disk. By transmitting a torque of a certain torque or more to the rotating disc 200 without idling the rotation of the coin 200, the coin payout device 1 can release the coin jam when the coin jam occurs.
[0051]
(Example of change)
The present invention is not limited to the above-described embodiment. For example, the torque limiter 258 and the one-way clutch 270 are disposed anywhere between the driving shaft of the motor 260 and the rotating shaft 255 of the rotating disk 200. May be. When a plurality of intermediate gears (for example, idle gears) are incorporated between the drive shaft of the motor 260 and the rotation shaft 255 of the rotating disk 200, the torque limiter 258 and the one-way clutch 270 are You may arrange | position in either of intermediate gears.
[0052]
【The invention's effect】
As described above, according to the present invention, when a rotating disk stops due to a coin being jammed, an excessive current is prevented from flowing to the motor by preventing a great load from being applied to the motor. The coin jam can also be released.
[Brief description of the drawings]
FIG. 1 is an external view showing a coin payout device according to the present embodiment.
FIG. 2 is a diagram showing a rotating disk and a peripheral mechanism of the rotating disk in the present embodiment.
FIG. 3 is a diagram showing a mechanism of a coin discharge unit in the present embodiment.
FIG. 4 is a cross-sectional view of a coin payout device according to the present embodiment.
FIG. 5 is an exploded perspective view showing a main part of the coin payout device according to the present embodiment.
FIG. 6 is a view showing a state in which the torque limiter and the one-way clutch in the present embodiment are incorporated in a driven gear (No. 1).
FIG. 7 is a view showing a state in which the torque limiter and the one-way clutch in the present embodiment are incorporated in the driven gear (No. 2).
FIG. 8 is a view showing a cross section of a torque limiter and a one-way clutch in the present embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Coin dispensing apparatus, 100 ... Bucket, 200 ... Rotating disk, 211 ... Opening, 212 ... Plate, 213 ... Coin delivery guide plate, 214 ... Guide claw, 215 ... Coin guide surface, 216 ... Hole, 220 ... Outer guide Plate, 221 ... Cover, 230 ... Coin discharging part, 231 ... Fixed roller, 232 ... Movable roller, 233 ... Outer movable roller, 240 ... Mounting unit, 241 ... Gear unit fixing part, 242 ... Through-hole, 250 ... Gear unit, 251 ... Gear unit body, 252 ... Side plate, 253 ... Hole, 254 ... Hole, 255 ... Rotating shaft, 256 ... Drive gear, 257 ... Recess, 258 ... Torque limiter, 259 ... Hole, 260 ... Motor, 261 ... Drive gear, 270 ... One-way clutch, 300 ... Base, 400 ... Mounting screw, 500 ... Coin, 600 ... Coin discharge opening

Claims (1)

A bucket for storing a plurality of coins, a rotating disk disposed at the bottom of the bucket and having a plurality of annular openings for receiving the coins, and driving means for driving the rotating disk to rotate. A coin payout device for rotating the rotating disk with a driving means and sequentially paying out the coins received in the opening;
If the load torque generated between the drive shaft of the drive means and the rotary shaft of the rotary disc exceeds a certain torque when the drive means is driven to rotate in the forward direction or the reverse direction, the drive means Transmission limiting means for limiting the rotational torque transmitted to the rotating disk from,
When the rotational torque transmitted from the driving means to the rotating disk is restricted by the transmission restricting means, when the driving means is rotationally driven in the forward direction, the rotational torque of the driving means is A transmission switching means for transmitting the rotation torque of the drive means to the rotation disk when the drive means is rotated in the opposite direction without being transmitted to the rotation disk. A coin payout device.

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