JPH10231915A - Reduction gear and sheets counting device using it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To transmit the rotation of a drive shaft upon proper reduction to a follower shaft using a simple configuration. SOLUTION: A reduction gear 10 is structured so that the rotation of a drive shaft 8 is transmitted upon reduction to a follower shaft consisting of car axle 9, and is equipped with a drive link 29 supported swingably about a supporting shaft consisting of a roller shaft 28 as fulcrum, a follower link 30 coupled with the drive link 29 through a pin 33 and supported swingably about the axle 9 as fulcrum, a cam mechanism 31 which transmits the torque of the drive shaft 8 to the drive link 29 to put it in swinging displacement and interlocking therewith puts the follower link 30 in swinging displacement, and a one-way clutch 32 which transmits the unidirectionally oriented driving force to the follower shaft when the follower link 30 is in swinging displacement.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reduction gear for reducing the rotation of a drive shaft and transmitting the rotation to a driven shaft, and a paper sheet counting device using the reduction gear.

[0002]

2. Description of the Related Art Conventionally, as shown in, for example, Japanese Utility Model Publication No. 60-6035, paper sheets are taken out of a hopper by a delivery roller and delivered to an impeller spaced from the delivery roller and having a plurality of blades. In class counters,
The delivery roller and the impeller are connected via a timing belt, and after the rotation of the delivery roller is stopped, a one-way clutch is provided on the impeller to rotate the impeller by inertia. Providing a portion having a large coefficient of friction, the rotation of the delivery roller driven by a drive motor is reduced by a reduction device and transmitted to the impeller,
By rotating the impeller, the sheets sandwiched between the opposing blades are neatly aligned on a receiving plate.

[0003]

In the above-described paper sheet counting apparatus, the paper sheet conveyed by the delivery roller is distributed one by one to a plurality of holding portions formed by a large number of blades protruding from an impeller. In order to reduce the rotation speed of the delivery roller, the rotation speed of the delivery roller is reduced by a speed reduction device having a timing belt and transmitted to the impeller. And the rotational speed of the speed reducer is synchronized at a speed reduction ratio corresponding to the number of the holding sections. Since the speed reduction ratio is large, the structure of the speed reduction device is complicated.

That is, the paper sheet counting device reduces the rotation of the drive shaft of the delivery roller, which is rotationally driven by a drive motor, to a synchronous shaft by decelerating the rotation with a deceleration timing belt mechanism having a pair of pulleys and a timing belt. The transmission is further reduced by a reduction gear mechanism provided between the synchronous shaft and the axle of the impeller, and transmitted to the drive shaft of the impeller, thereby rotating the drive shaft of the delivery roller in two stages. In this case, the transmission speed is reduced and transmitted to the axle of the impeller, so that the number of parts increases, the device becomes large, and the manufacturing cost increases.

In view of such circumstances, the present invention provides a speed reducer capable of appropriately reducing the rotation of a drive shaft and transmitting the rotation to a driven shaft with a simple configuration, and a paper sheet counting device using the same. To provide.

[0006]

The invention according to claim 1 is
In a reduction gear transmission for reducing the rotation of a drive shaft and transmitting the rotation to a driven shaft, a drive link swingably supported on a support shaft as a fulcrum, the drive link being connected to the drive link via a connecting pin, and A driven link that is swingably supported on a shaft as a fulcrum, and transmits the rotational force of the drive shaft to the drive link to swing and displace the drive link, and swings the driven link in conjunction with this. And a one-way clutch for transmitting a driving force in only one direction to the driven shaft when the driven link swings.

According to the above configuration, when the drive shaft rotates,
The rotational force of the drive shaft is transmitted to the drive link via the cam mechanism, and the drive link swings, and the driven link drives the driven link to swing. When the driven link swings, the driving force is transmitted to the driven shaft via the one-way clutch, so that the driven shaft rotates in only one direction.

According to a second aspect of the present invention, in the speed reducer according to the first aspect, a flywheel is provided on the driven shaft.

According to the above configuration, the rotation of the driven shaft that is rotationally driven by the driven link is smoothed by the flywheel.

[0010] The invention according to claim 3 is the invention according to claim 1 or 2.
In the paper sheet counting device using the reduction gear described,
It has a feeding unit that feeds and conveys the sheets stored in the hopper one by one, a counting unit that counts the fed sheets, and a plurality of holding units that hold the counted sheets. An impeller and a stacking unit on which the sheets held by the holding unit of the impeller are stacked are provided, and the rotation of the drive shaft of the feed-out transport unit is reduced by the reduction gear from the axle of the impeller. This is configured to be transmitted to the following driven shaft.

According to the above construction, when the feeder is driven and its drive shaft rotates, the rotational force of this drive shaft is transmitted to the drive link via the cam mechanism, and the drive link swings and displaces. The driven link is driven by the drive link to swing and displace. When the driven link swings and displaces, the driving force is transmitted to the axle of the impeller via the one-way clutch, so that the impeller rotates only in one direction, and the holding portion of the impeller rotates. Are discharged onto the stacking unit and stacked.

According to a fourth aspect of the present invention, in the sheet counting apparatus according to the third aspect, a stop roller is provided for preventing a plurality of sheets from being simultaneously fed out of the hopper. The drive link is swingably supported with the roller shaft as a fulcrum.

According to the above construction, when the papers in the hopper are fed out by the feed-out transport section, the double feed is prevented by the stop roller, and the feed-out transport section is driven to rotate the drive shaft. Then, the rotational force of the drive shaft is transmitted to the drive link via the cam mechanism, and the drive link swings about the roller shaft of the stop roller.

According to a fifth aspect of the present invention, in the paper sheet counting apparatus according to the third or fourth aspect, the driving force in only one direction when the drive link swings is transmitted to the stop roller. A one-way clutch is provided for rotating the stop roller in a direction opposite to the transport direction of the paper sheet.

According to the above construction, when the feed-out transport section is driven and its drive shaft rotates, the rotational force is transmitted from the swing link to the stop roller via the one-way clutch, and the stop roller is driven by the feed-out transport section. It rotates at a low speed in the direction to push back the paper conveyed by the section, and the double feeding of the paper is effectively prevented.

The invention according to claim 6 is the invention according to claims 3 to 5 above.
In the paper sheet counting device according to any one of the above, a reverse rotation driving unit that reversely drives the feeding / conveying unit when a paper sheet jam occurs is provided.

According to the above configuration, when a paper jam occurs, the feeding transport unit is driven to rotate in the reverse direction by the reverse rotation drive unit, so that the paper sheet jammed in the installation portion of the feeding transport unit is placed on the hopper. And the impeller is driven to rotate in the direction of discharging the paper sheets, and the paper sheets held by the holding section are discharged onto the stacking section and stacked.

[0018]

1 and 2 show an embodiment of a paper sheet counting apparatus using a speed reducer according to the present invention. This paper sheet counting apparatus includes a hopper 2 for storing paper sheets 1 such as bills, originals, and gift certificates, and a payout conveyance for feeding and conveying the paper sheets 1 stored in the hopper 2 one by one. Unit 3, counting means 4 for counting the fed sheets 1, a pair of impellers 6 having a plurality of holding units 5 for holding the counted sheets 1, and a holding unit for the impeller 6 A stacking unit 7 on which the sheets 1 held by the stack 5 are stacked;
A reduction gear 1 that reduces the rotation of the drive shaft 8 of the feed-out transport unit 3 and transmits the rotation to the driven shaft including the axle 9 of the impeller 6.
0.

The hopper 2 has an inclined bottom wall 11 on which the paper sheet 1 is placed, and a side guide 12 for regulating the side of the paper sheet 1. At the front end, the front end of the paper sheet 1 is directed downward, so that the paper sheet 1 located at the lowermost end is separated from other paper sheets and guided to the feed-out transport unit 3 side. Separation plate 1
3 are provided.

The feed-out transport section 3 includes a pair of left and right feed-out rollers 14 for feeding out the paper sheets 1 stored in the hopper 2, a feed roller 15 disposed inside the both feed-out rollers 14, and A pair of take-in rollers 16 disposed at a position facing the feed roller 14
A stop roller 17 disposed at a position facing the feed roller 15, a tension roller 18 disposed at a position below the stop roller 17 and facing the feed roller 15, and It has a guide plate 19 for guiding the fed paper sheet 1 to the installation portion of the impeller 6.

The feed roller 14 and the feed roller 15 are integrally connected to the drive shaft 8 rotatably supported by the housing 20 of the counting device by means such as key connection. A belt transmission mechanism 23 for transmitting power is provided between the drive shaft 8 and an output shaft of a drive motor 22 attached to the housing 20. And
When the driving force of the driving motor 22 is transmitted to the driving shaft 8 and the driving shaft 8 is rotationally driven, the feed roller 14 and the feed roller 15 rotate, and the paper positioned at the lowermost end in the hopper 2 is rotated. The leaves 1 are fed out one by one and transported.

That is, as shown in FIG. 3, a feeding friction material 24 made of a material having a high friction coefficient such as a rubber material is provided on the outer peripheral surface of the feeding roller 14 over a predetermined range. When the feed-out friction material 24 reaches the installation portion of the take-in roller 16 in accordance with the rotation of the hopper 2, the paper 1 is held between the take-up roller 16 and the feed-out friction material 24, and the hopper 2 It is to be paid out from inside. The take-in roller 16 has at least an outer peripheral portion formed of a soft material having flexibility, and a portion in contact with the feed roller 14 is elastically deformed, so that the paper sheet 1 is effectively held. It is configured to be.

As shown in FIG. 4, a transfer friction material 25 made of a material having a high friction coefficient such as a rubber material is provided on the outer peripheral surface of the feed roller 15.
When the paper sheet 1 fed by the feed roller 14 reaches the installation portion of the feed roller 15, the feed roller 15 is rotated. The transfer friction material 25 is provided so as to reach the installation portion of the stop roller 17 in accordance with the above. The sheet 1 is conveyed downward through the space between the feed roller 15 and the stop roller 17 according to the conveying force applied to the sheet 1 from the conveying friction material 25 of the feed roller 15. It has become.

The stop roller 17 is attached to a roller shaft 28 via a one-way clutch 40 which allows the paper sheet 1 conveyed by the feed roller 15 to rotate only in a direction to push back the sheet 1 and is fed to the feed-out section 3. By rotating the sheet 1 at a low speed in a direction to push back the sheet 1 in response to the drive link 29 being driven by the cam mechanism 31 and swinging and displacing, the two or more sheets 1 from the inside of the hopper 2 are rotated. Are fed out at the same time, the double feed is prevented.

The counting means 4 comprises a photo sensor for detecting the paper sheet 1 conveyed by the feeding and conveying section 3, and the like. The number of paper sheets 1 detected by the counting means 4 is not shown in the figure. And a display means such as a liquid crystal display.

The impeller 6 is mounted on the housing 2 of the counting device.
A boss portion 26 integrally connected to the axle 9 rotatably supported by a key means such as a key connection, and a plurality of blades 27 protruding from an outer peripheral surface of the boss portion 26; The holding portion 5 of the paper sheet 1 is formed between the blades 27 that make up. Then, the rotation of the drive shaft 8 is reduced by a reduction gear 10 and transmitted to the axle 9. The axle 9 and the impeller 6 are driven to rotate at a predetermined rotation speed, whereby After the transported paper sheets 1 are sequentially inserted and held in the holding section 5,
The sheet is discharged onto the stacking section 7 and stacked.

As shown in FIG.
A drive link 2 that is swingably supported on a support shaft composed of a roller shaft 28 provided with a stop roller 17 as a fulcrum.
9 and a driven link 30 that is swingably supported with one end of a driven shaft composed of the axle 9 as a fulcrum, and the rotational force of the drive shaft 8 of the feed-out transport unit 3 is transmitted to the drive link 29. A cam mechanism 3 for oscillatingly displacing the drive link 29
And 1.

Between the driven link 30 and the axle 9, when the driven link 30 swings, a driving force in only one direction is transmitted to the axle 9, and the impeller 6 discharges the paper 1. A one-way clutch 32 is provided to allow rotation in one direction and prevent rotation in the opposite direction. In addition, a connecting pin 33 is protruded from the distal end of the drive link 29, and a long hole 34 extending in the longitudinal direction is formed at the distal end of the driven link 30.
The link pins 33 are inserted into the elongated holes 34 to connect the two links 29 and 30 to each other. When the drive link 29 is driven by the cam mechanism 31 to oscillate, the driven link 30 is oscillated in conjunction with the drive link 29.

The cam mechanism 31 includes an elongated hole 35 formed on the side of the drive link 29 and extending toward the base end thereof, and a driven pulley 36 of the belt transmission mechanism 23 which rotates integrally with the drive shaft 8. The eccentric cam 37 protrudes from the rear surface. The eccentric cam 37 is inserted into the elongated hole 35. The eccentric cam 37 rotates in the elongated hole 35 in accordance with the rotation of the pulley 36 and the drive shaft 8, so that the drive link 29 swings about the roller shaft 28 as a fulcrum. Have been.

The driven link 30 of the reduction gear transmission 10
As shown in FIG. 1, a flywheel 3 for smooth rotation of the axle 9 is attached to the other end of the axle 9 to which the axle 9 is attached.
8 is attached. Further, the other end of the drive shaft 8 to which the eccentric cam 37 of the reduction gear transmission 10 is attached,
A clearance adjustment handle 39 is attached. The clearance adjustment handle 39 adjusts the installation position of the drive shaft 8 by rotating a cam provided on a shaft portion or the like in accordance with the manual operation, thereby adjusting the position between the feed roller 15 and the stop roller 17. It is configured to adjust the distance.

When the drive motor 22 is driven in a state where a plurality of sheets 1 are stored in the hopper 2 in the above configuration, the drive force is transmitted to the drive shaft 8 via the belt transmission mechanism 23, When the feed roller 14 and the feed roller 15 are rotationally driven, the paper sheet 1 is fed from the hopper 2 in a state where the paper sheet 1 is sandwiched between the feed friction member 24 of the feed roller 14 and the take-in roller 16. .

Then, the fed paper sheet 1 is transferred to the conveying friction material 25 of the feed roller 15 and the stop roller 1.
7 and the stop roller 1
7, the sheet 1 is conveyed downward while preventing double feed. After the number of sheets 1 is counted at the installation portion of the counting means 4, the sheet 1 is guided by the pull-in roller 18 and the guide plate 19. It is sequentially inserted into the holding portion 5 of the impeller 6.

In addition, as the driving force of the driving motor 22 is transmitted to the belt transmission mechanism 23 and the pulley 36 and the driving shaft 8 rotate, the eccentric cam 37 moves to the slot 35.
, The drive link 29 swings about the roller shaft 28 as a fulcrum, and the swing displacement is transmitted to the driven link 30 via the connection pin 33,
The driven link 30 is oscillated with the axle 9 as a fulcrum. When the driven link 30 swings, the one-way driving force is transmitted to the axle 9 via the one-way clutch 32, and the impeller 6 connected to the axle 9 The holder 5 rotates in the discharge direction of the
Are sequentially discharged onto the stacking unit 7 and stacked.

The drive link 29 is swingably supported on the support shaft including the roller shaft 28 of the stop roller 17 as a fulcrum.
And a driven link 30 that is swingably supported on a driven shaft composed of an axle 9 of the impeller 6 as a fulcrum, and the rotational force of a drive shaft 8 of the feed-out transporting unit 3 is controlled by the driving force. A cam mechanism 31 that transmits to the link 29 to oscillate the drive link 29 and oscillates the driven link 30 in conjunction with the cam link 31; Since the one-way clutch 32 for transmitting the driving force to the axle 9 is provided,
The rotation of the drive shaft 8 can be effectively decelerated and transmitted to the axle 9 with a simple configuration.

That is, as the drive shaft 8 makes one rotation and the eccentric cam 37 of the cam mechanism 31 makes one rotation, the drive link 29 and the driven link 30 swing once.
As a result, the axle 9 rotates in a specific direction by an angle corresponding to the swing angle of the swing link 30. Therefore, the above-described drive can be performed with a simple configuration without employing a complicated configuration in which the rotation of the drive shaft is reduced to two stages and transmitted to the driven shaft by the reduction timing belt mechanism and the reduction gear mechanism as in the conventional device. The rotation of the shaft 8 is effectively reduced and transmitted to the axle 9 so that the impeller 6 attached to the axle 9 can be rotated in the discharge direction of the sheet 1 at an appropriate speed.

The swing range of the driven link 30 is changed by changing the swing range of the drive link 29 driven by the cam mechanism 31 or by changing the ratio of the length of the drive link 29 to the length of the driven link 30. Is adjusted, the reduction ratio of the rotation transmitted from the drive shaft 8 to the axle 9 can be easily and arbitrarily changed.

In the above-described embodiment, the flywheel 38 is provided on the driven shaft including the axle 9 of the impeller 6,
When the driven link 30 swings, the axle 9 of the impeller 6
The rotation speed of the impeller 6 is effectively prevented from being changed due to the intermittent driving, and the paper sheets held by the holding unit 5 are smoothly rotated by the impeller 6. The operation of discharging the sheets 1 onto the stacking section 7 and stacking them can be performed smoothly.

Further, in the above embodiment, the stop roller 17 for preventing a plurality of sheets from being simultaneously fed out from the hopper 2 is provided, and the drive link 29 is connected to the roller shaft 28 of the stop roller 17 as a fulcrum. It is swingably supported, and the roller shaft 28 is configured to have both the function as the support shaft of the stop roller 17 and the function as the support shaft of the swing link 28. There is an advantage that the structure can be effectively simplified as compared with the case where the shaft is provided separately.

In the above embodiment, the drive link 29
The hopper 2 is provided with a one-way clutch 40 for transmitting the driving force in only one direction to the stop roller 17 when the rocking displacement of the hopper is performed and rotating the stop roller 17 in the direction opposite to the paper sheet transport direction. When a plurality of paper sheets 1 are fed out from the inside, the stop rollers 17 are configured to be rotationally driven at a low speed in a direction in which the paper sheets 1 located above are pushed back by the stop rollers 17. The sheet 1 can be effectively prevented from being double fed by the rollers 17. In addition, since the stop roller 17 can be driven to rotate by using the driving force of the feed-out transport unit 3, the structure of the drive mechanism can be effectively simplified as compared with the case where a separate rotary drive unit is provided. can do.

It should be noted that the driving force of the drive shaft 8 is reduced by the stop roller 17 by a power transmission unit including a belt transmission mechanism having a pair of pulleys and a V belt instead of the above configuration.
, The stop roller 17 may be configured to be rotationally driven in a direction to push back the paper 1 conveyed by the feed roller 15.

In addition, a motor capable of normal / reverse rotation is used as the drive motor 22, and a reverse rotation drive unit comprising control means for controlling the drive motor 22 to rotate in reverse according to a switch operation is provided. The drive shaft 8 of the feeding and transporting unit 3 may be reversely rotated by the reverse rotation driving unit. In the case of such a configuration, when the paper sheet 1 is jammed, the drive shaft 8 is driven to rotate in a direction opposite to the conveying direction of the paper sheet 1, so that the paper jam is caused at the installation portion of the feed-out conveyance section 3. The jammed sheet 1 can be moved to the hopper 2 side to easily remove the jam.

In addition, even when the drive shaft 8 is driven to rotate in the direction opposite to the direction in which the paper sheet 1 is conveyed by the reverse rotation drive unit, the power transmission of the one-way clutch 32 causes the axle of the impeller 6 to rotate. By rotating the driven shaft 9 in the discharging direction of the paper sheet 1, the paper sheet 1 held by each holding section 5 of the impeller 6 can be discharged onto the stacking section 7. Accordingly, it is possible to effectively prevent the paper sheet 1 held by each holding unit 5 of the impeller 6 from being fed back to the feeding and conveying unit 3 side and causing a jam. Note that, instead of the above-described configuration in which the drive motor 22 is rotated in the reverse direction, the drive shaft 8
May be configured to be rotated reversely by manual operation.

In the above embodiment, the drive motor 22
A feed roller 14 and a feed roller 15 are provided on a drive shaft 8 that is rotated and driven by the drive roller 8, and the feed friction material 24 of the feed roller 14 is brought into contact with the lower surface of the paper sheet 1, whereby And the transporting friction material 25 of the feed roller 15 is brought into contact with the lower surface of the fed-out paper sheet 1 so that the paper sheet 1 is transported.
Compared to the case where the drive shafts of the feed roller 14 and the feed roller 15 are provided separately, the structure of the drive unit can be simplified, and the installation space for both rollers 14 and 15 is reduced to make the counting device compact. Can be

Further, in the above embodiment, the take-in roller 1 disposed at a position facing the feed roller 14
Since at least the outer peripheral portion of the roller 6 is formed of a flexible material, the outer peripheral portion of the take-in roller 16 is pressed against the pay-out roller 14 and elastically deformed into a shape corresponding to the outer peripheral portion. There is an advantage that the sheet 1 can be properly conveyed while being sandwiched between the rollers 16. In addition, by rotating the take-in roller 16 in conjunction with the pay-out roller 14, the contact position of the take-up roller 16 with respect to the pay-out roller 14 can be constantly changed. It can be effectively prevented.

In the above embodiment, an example in which the speed reducer 10 is applied to a paper sheet counting device has been described. However, the present invention is not limited to this, and the rotation of the drive shaft is reduced and transmitted to the driven shaft. The reduction gear transmission 10 can be applied to various devices.

[0046]

As described above, according to the first aspect of the present invention, a drive link that is swingably supported on a support shaft as a fulcrum is connected to the drive link via a connecting pin, The driven link supported swingably with the driven shaft as a fulcrum, and the rotational force of the drive shaft is transmitted to the drive link to oscillate and displace the drive link. A cam mechanism for swinging displacement and a one-way clutch for transmitting a driving force in only one direction to the driven shaft when the driven link swings are provided. The speed is reduced at the reduction ratio and transmitted to the driven shaft, so that the driven shaft can be appropriately rotated.

According to the second aspect of the present invention, since the flywheel is provided on the driven shaft, the driven shaft is prevented from being intermittently driven when the driven link swings, and the driven shaft is smoothly rotated. Can be done.

According to a third aspect of the present invention, there is provided a feeder and a feeder for feeding and transporting the sheets stored in the hopper one by one, and a counting means for counting the fed sheets. An impeller having a plurality of holding sections for accommodating the stacked paper sheets, and a stacking section on which the paper sheets held by the holding sections of the impellers are stacked. Since the transmission is transmitted to the driven shaft composed of the axle of the impeller after being decelerated by the reduction gear, the rotation of the drive shaft is reduced in two stages by the reduction timing belt mechanism and the reduction gear mechanism as in the conventional apparatus. Without adopting a complicated configuration of transmitting to the driven shaft, the rotation of the drive shaft is effectively decelerated and transmitted to the axle with a simple configuration, and the impeller mounted on this axle is rotated at an appropriate speed. In the direction of paper sheet discharge It is possible to transfer.

According to a fourth aspect of the present invention, there is provided a stop roller for preventing a plurality of sheets from being fed out of the hopper, and the drive link is swingable about the support shaft of the stop roller. Therefore, the structure can be effectively simplified as compared with the case where the support shaft of the swing link is provided separately.

According to a fifth aspect of the present invention, the driving force in only one direction at the time of the swing displacement of the drive link is transmitted to the stop roller, and the stop roller is moved in the direction opposite to the sheet conveying direction. With a one-way clutch to rotate,
The paper can be effectively prevented from being double-fed by the stop roller, and the stop roller can be rotationally driven by using the driving force of the feeding and transporting unit. There is an advantage that the structure of the driving mechanism can be effectively simplified as compared with the case where the device is provided.

In the invention according to claim 6, since the reverse rotation drive unit for reversely driving the feeding / conveying unit when a paper sheet jam occurs is provided, the drive shaft is rotated by the reverse rotation drive unit. By rotating and driving in the direction opposite to the transport direction, the jammed paper sheets at the installation portion of the feed-out transport unit can be moved to the hopper side, and the jam can be easily eliminated. In addition, even when the drive shaft is driven to rotate in the direction opposite to the sheet conveyance direction by the reverse rotation drive unit, the driven shaft formed by the axle of the impeller is driven by the power transmission action of the one-way clutch. The papers held in the holding section of the impeller can be discharged onto the stacking section by rotating the papers in the discharge direction of the papers. There is an advantage that it can be effectively prevented.

[Brief description of the drawings]

FIG. 1 is a side sectional view showing an embodiment of a paper sheet counting apparatus according to the present invention.

FIG. 2 is a front sectional view showing a configuration of a main part of the counting device.

FIG. 3 is a cross-sectional view illustrating a configuration of a feeding roller.

FIG. 4 is a cross-sectional view illustrating a configuration of a feed roller.

FIG. 5 is an explanatory diagram showing an embodiment of a reduction gear transmission according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Paper sheet 2 Hopper 3 Feeding-out conveyance part 4 Counting means 5 Retaining part 6 Impeller 7 Stacking part 8 Drive shaft 9 Axle (driven shaft) 10 Reduction gear 17 Stop roller 28 Roller shaft (support shaft)

Claims (6)

[Claims] 1. A speed reducer for reducing the rotation of a drive shaft and transmitting the rotation to a driven shaft, wherein the drive link is swingably supported on a support shaft as a fulcrum, and is connected to the drive link via a connection pin. And a driven link swingably supported on the driven shaft as a fulcrum, and transmitting the rotational force of the drive shaft to the drive link to oscillate and displace the drive link. A speed reducer comprising: a cam mechanism that swings and displaces a driven link; and a one-way clutch that transmits a driving force in only one direction to the driven shaft when the driven link swings. 2. The reduction gear transmission according to claim 1, wherein a flywheel is provided on the driven shaft. 3. A sheet counting device using the speed reduction device according to claim 1 or 2, wherein a feeding unit that feeds and transports the sheets stored in the hopper one by one. Counting means for counting paper sheets, and an impeller having a plurality of holding portions for accommodating the counted paper sheets,
And a stacking unit on which the paper sheets held by the holding unit of the impeller are stacked, wherein the rotation of the drive shaft of the feeding and transporting unit is reduced by the speed reduction device to a driven shaft comprising the axle of the impeller. A sheet counting device characterized by being configured to transmit. 4. A stop roller for preventing a plurality of sheets from being fed out simultaneously from the inside of the hopper, and a drive link is swingably supported on a support shaft of the stop roller as a fulcrum. The paper sheet counting device according to claim 3. 5. A one-way clutch for transmitting a driving force in only one direction when the drive link swings to the stop roller and rotating the stop roller in a direction opposite to the sheet conveying direction. 5. The method according to claim 3, wherein
A paper sheet counting device as described in the above. 6. The paper sheet counting apparatus according to claim 3, further comprising a reverse rotation drive unit that reversely drives the feeding / conveying unit when a paper sheet jam occurs.