JPS6349802Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The present invention rotates a coin feeding disk into a hopper that accommodates coins to feed a predetermined number of coins into the hopper for the purpose of exchanging money and dispensing change. This invention relates to a coin feeding disk drive device for a coin dispensing device that dispenses one coin from a single coin.

(Prior art) Conventionally, as a coin dispensing device, the
As shown in Figure 6, this type of coin dispensing device has a cylindrical container connected to the lower end of a coin hopper 1 that stores a large number of coins in bulk. Coin feeding disc 3 within 2
is rotatably supported on a support plate 4, and this coin feed disk 3 has a plurality of coin receiving holes spaced apart in the circumferential direction for receiving coins, and is driven by an electric motor 5 via a speed reduction device 6. With this rotation, coins are ejected from the cylindrical container 2 one by one, and the ejected coins actuate a counting micro switch, and the number of ejected coins reaches a predetermined number. At this time, the power supply to the electric motor is immediately cut off, and at the same time, the rotation of the motor shaft 9 is stopped by the braking device 8, so that excess coins are not ejected.

As shown in FIG. 7, the braking device 8 includes a synthetic resin braking wheel 13 attached to the end of a motor shaft 9 protruding from the rotor 10 of the electric motor 5 so as to rotate integrally therewith, and The outer periphery of the ring 13 is provided with brake pawls 15 made of a synthetic resin material that can engage with a plurality of protrusions 14 integrally protruding at positions equally spaced apart in the circumferential direction, and this pawl 15 is provided with a pivoting pawl. The end surface 11a of the stator 11 is supported by the support pin 16.
The brake pawl piece 15 is urged by a spring 17 so that the pawl portion 15a constantly engages the protrusion 14 on the brake wheel 13 to prevent rotation of the rotor 10 and, therefore, the motor shaft 9. has been done.

Also, when the electric motor 5 is energized, the protrusion 1 of the brake wheel 13
4 and the brake claw piece 15, and remove the rotor 10.
A release iron piece 18 is pivotally mounted on the end face 11a of the stator 11 by a pivot shaft 19, and a suction part 18a of the release iron piece 18 extends along the outer surface 11b of the stator 11. An integrated release arm 2 is provided from this suction portion 18a.
0 is provided to extend downward toward the claw piece 15, the lower end 20a of the release arm 20 is engaged with the notch 21 of the claw piece 15, and the claw piece 15 is elastically restrained to the illustrated locking position by the spring 17. When the suction part 1 is
8a are positioned facing and spaced apart from the outer surface 17b of the stator 17, and the excitation coil 2 of the electric motor 5
2, the magnetic attraction action of the stator 11 attracts the attraction part 18a and the stator 11
As a result, the release iron piece 18 rotates clockwise in the drawing around the pivot shaft 19, and the release arm 20 pushes down the claw piece 15 against the spring force, and the claw Claw portion 15a of piece 15
is disengaged from the protrusion 14 on the brake wheel 13 so that the rotor 10 can rotate.

In the braking device 8 having the above-described structure, when the excitation coil 22 of the electric motor 5 is de-energized, the adhesion force of the stator 11 to the adsorption portion 18a of the release iron piece 18 disappears, and at the same time, the force of the stator 11 is removed by the spring 17. 15 is pressed toward the outer periphery of the brake wheel 13 and protrudes from the outer periphery of the brake wheel 13 .
4, the rotor 10
to prevent the rotation of the motor shaft 9 and stop the rotation of the motor shaft 9,
The coin feeding disk 3 of the coin dispensing device described above stops rotating and coin dispensing is stopped.

(Problem to be Solved by the Invention) However, the braking device 8 having the above-described structure has a structure in which the pawl piece 15 is elastically pressed against the outer periphery of the braking wheel 13 by the spring 17 and engaged with the protrusion 14 for braking. Therefore, during braking, the brake wheel 1 rotates integrally with the rotor 10 due to inertia force.
The protrusion 14 on the coin dispensing device 3 elastically pushes the claw piece 15 away, and the brake wheel 13 is often rotated several times even after the electric motor is cut off. The moment of inertia of the rotor 10 may cause the rotor 10 to stop reliably in position, especially when the protrusion 14 and the pawl 15 are worn out due to long-term use, or when the force of the spring 17 has weakened. There was a problem in that the claw piece 15 could not reliably catch the protrusion 14 of the brake wheel 13 on the rotating motor shaft 9, and as a result, one or more extra coins were thrown out.

(Means for Solving the Problems) The present invention was devised in view of the above-mentioned problems, and the motor shaft 9, which rotates together with the rotor 10 when the motor is turned on, is rotated when the motor shaft 9 is rotated together with the rotor 10 when the motor is turned off. It is an object of the present invention to provide a coin feeding disk drive device configured to be able to be stopped regardless of rotation.

Therefore, according to the present invention, a hopper accommodating a large number of coins as shown in the conventional device of FIG.
The coin dispensing device is of a type in which the coin dispensing disc is driven by an electric motor 5 via a speed reduction device 6 so that the coin dispensing disc 3 is rotated within the hopper 1 to eject one coin from within the hopper 1. In the plate drive device, the first
As shown in the figure, a rotor 10 is rotatably attached to a motor shaft 9 via bearings 25, 25,
A friction plate 27 is inserted between a support plate 26 fixed to the motor shaft 9 and one end 10a of the rotor 10, and the motor shaft 9 is connected to the other end 10b of the rotor 10.
A brake wheel 13 is attached to the rotor 10 with a friction plate 28 interposed therebetween so as to rotate together with the motor shaft 9, but is slidable in the axial direction, and a collar 29 fixed on the motor shaft 9 and the brake wheel are attached. A spring 30 is inserted between the rotor 10 and the rotor 10, and the force of this spring presses the support plate 26 and the brake wheel 13 to both ends 10a, 10b of the rotor 10 via the friction plates 27, 28. The shaft 9 is the rotor 1
A plurality of protrusions 14 are provided on the outer periphery of the brake wheel 13 so as to rotate together with the brake wheel 0, and a plurality of protrusions 14 are provided on the outer periphery of the brake wheel 13 so as to be spaced apart from each other in the circumferential direction. It is characterized in that a brake pawl piece 15 is provided around the brake wheel.

(Function) According to the coin feeding disc drive device of the coin dispensing device of the present invention configured as described above, the coin dispensing device dispenses a predetermined number of coins and is normally provided at the outlet of the coin dispensing device. When the excitation coil 22 of the motor 5 is de-energized by the signal from the counting switch, as described above, the adsorption force of the stator 11 to the release iron piece 18 is lost, and the downward force of the release piece 20 against the brake pawl piece 15 is reduced. As a result, the brake pawl piece 15 is pressed toward the outer periphery of the brake wheel 13 by the spring 17, and the brake pawl piece 15 is projected to a position where it engages with the protrusion 14 of the brake wheel 13. Therefore, after the electric motor 5 is turned off, the protrusion 1 of the brake wheel 13 fixed to the motor shaft 9 rotating together with the rotor 10 due to the moment of inertia
4 hits the brake pawl piece 15, and the protrusion 14 is captured by the brake pawl piece 15, whereby it is frictionally engaged with the rotor 10 by the spring force of the spring and rotates together with the rotor 10. motor shaft 9
will stop rotating immediately.

(Example) Figures 1 to 4 show a first example of the present invention. As shown in FIG. 2, the illustrated coin feeding disk drive device has a rotor 10 attached to a motor shaft 9 that drives a coin feeding disk rotating shaft 7 via a reduction gear device 6, as shown in FIGS. 1 and 4. The plastic support plate 26 is rotatably mounted via bearings 25, 25 made of oil-less metal, synthetic resin material, etc., and is fixed to the motor shaft 9 by a fixing pin 31, and the one end 10a of the rotor 10. A friction plate 27 made of oil-impregnated felt or leather is inserted between the rotor 10 and the motor shaft 9 on the other end 10b side of the rotor 10, with a friction plate 28 similar to the friction plate 27 interposed between the brake wheel made of synthetic resin material. 13 is attached so that it can rotate together with the motor shaft 9 and slide in the axial direction by engaging the slot 32 formed in this and the fixing pin 23 that fixes the collar 29 to the motor shaft 9. A spring 30 is inserted between the brake wheel 13 and a collar 29 fixed to the collar 9 by a fixing pin 33, and the force of this spring causes the support plate and the brake wheel 13 to move against the rotor 10 via the friction plates 27 and 28. The motor shaft 9 is held by a spring 30 so that the motor shaft 9 rotates together with the rotor 10.

A plurality of protrusions 14 are provided on the outer periphery of the brake wheel 13 so as to be spaced apart from each other in the circumferential direction.
A brake pawl piece 15 made of a synthetic resin material that can be engaged with the brake pawl piece 1 is pivotally mounted on the end surface 11a of the stator 11 by a pivot pin 16, and is attached to the brake pawl piece 1 by a spring 17.
5 is biased so as to engage a protrusion 14 on the brake wheel 13 to prevent rotation of the motor shaft 9.

Also, when the electric motor 5 is energized, the protrusion 1 of the brake wheel 13
4 and the brake claw piece 15, and remove the motor shaft 9.
In order to rotate together with the rotor 10, the release iron piece 18 is pivotally connected to the end face 11a of the stator 11 by a pivot shaft 19, and the suction part 18a of the release iron piece 18 is attached to the outer surface 11b of the stator 11. An integrated release arm 20 is extended downward from the suction portion 18a toward the brake pawl piece 15, and the lower end 20a of the release arm 20 is connected to the notch 2 of the pawl piece 15.
1 and when the excitation coil 22 of the electric motor 5 is energized, the attraction part 18a is attracted to the upper surface 11b of the stator 11 by the magnetic attraction action of the stator 11, and the release arm 20 applies the spring force of the spring 17 to the claw piece 15. It is configured so that the claw portion 15a of the claw piece 15 and the protrusion 14 on the brake wheel 13 are disengaged by pushing down against the force.

FIG. 5 shows another embodiment of the present invention, in which one end 10a of the rotor 10 is connected to a conical centripetal bearing 3 made of oilless metal or synthetic resin material.
4 on the motor shaft. By supporting at least one end of the rotor 10 by the conical centripetal bearing 34 centered with respect to the motor shaft 9, the rotor 1
0 centering, which allows the center line of the rotor 10 to automatically align with the center line of the motor shaft after assembly, so that after mounting the rotor 10 on the motor shaft 9, the center line of the rotor 10 automatically aligns with the center line of the motor shaft. It is possible to save the effort of grinding the outer peripheral surface to align the centers.

(Effects of the invention) According to the invention, the rotation of the motor shaft can be immediately and reliably stopped when power is cut off to the electric motor, and the operation of dispensing the correct number of coins can be reliably performed. is obtained.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of the rotor and motor shaft assembly of the electric motor of the drive device according to the present invention, FIG. 2 is a perspective view of the drive device according to the present invention, and FIG.
FIG. 4 is an exploded perspective view of the assembly shown in FIG. 3;
FIG. 5 is a longitudinal sectional view similar to FIG. 1 showing another embodiment of the present invention, FIG. 6 is a longitudinal sectional view of a conventional coin dispensing device, and FIG. 7 is a longitudinal sectional view of the transmission device shown in FIG. 6. FIG. 1... Coin hopper, 2... Container, 3... Coin feeding disk, 4... Support plate, 5... Electric motor, 6...
Reduction device, 7... Rotating shaft, 8... Braking device, 9...
...Motor shaft, 10...Rotor, 11...Stator, 13...Brake wheel, 14...Protrusion, 16...
...Pivotal pin, 18...Release iron piece, 18a...Adsorption part, 19...Pivot shaft, 20...Release arm, 22...
Excitation coil, 25... Bearing, 26... Support plate, 2
7, 28...Friction plate, 29...Color, 30...
Spring, 31... Fixed pin, 32... Slot, 33...
...Fixing pin, 34... Centripetal bearing.

Claims (1)

[Scope of utility model registration request] A coin dispensing device in which a coin dispensing disc is driven by an electric motor via a deceleration device so as to rotate a coin dispensing disc into a hopper that accommodates a large number of coins and discharging one coin from within the hopper. In the feeding disk drive device, a rotor 10 is rotatably attached to the motor shaft 9 of the electric motor 5 via a bearing 25, and a rotor 10 is rotatably attached to the motor shaft 9 of the electric motor 5, and a rotor 10 is provided between a support plate 26 fixed to the motor shaft 9 and one end 10a of the rotor 10. Friction plate 2
7 is inserted, and the brake wheel 13 is mounted on the motor shaft on the other end 10a side of the rotor 10 with a friction plate 28 interposed between the rotor and the rotor so that the brake wheel 13 rotates integrally with the motor shaft and is slidable in the axial direction. , a spring 30 is installed between the collar 29 fixed on the motor shaft and the brake wheel.
is inserted, and the spring force presses the support plate and the brake wheel to both ends 10a, 10b of the rotor 10 via the friction plates 27, 28, thereby causing the motor shaft to rotate together with the rotor. A plurality of protrusions 14 are provided on the outer periphery of the brake wheel so as to be spaced apart from each other in the circumferential direction, and are protruded to a position where they engage with the protrusions 14 when the electric motor is turned off. A coin feeding disc drive device for a coin dispensing device, characterized in that a disc is provided around a brake wheel.