JPS6230131Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a coin dispensing control device in a device that dispenses coins by rotating a cam once by driving a motor, and particularly relates to a coin dispensing control device for coin collection. Regarding.

(b) Prior art As such a coin dispensing device, Utility Model Publication No. 47-38236
There is a technique shown in the publication. When the cam attached to the drive shaft rotates due to the drive of the motor, the lever moves back and forth using the crank, dispensing change from the change storage cylinder, and one rotation of the cam causes the motor stop switch to cut off the power to the motor. It is. Then, when the change collection push button switch is operated, the motor is kept energized, and change continues to be dispensed and collected.

(c) Problems to be Solved by the Invention The general structure of the coin dispensing control device in this type of coin dispensing device is shown in FIG. 1, and the problems will be described below.

In the figure, 1 is a coin dispensing motor, 2 is a pulse switch or cam switch that detects one revolution of the cam, 5 is a free-running circuit, 3 is a coin collection switch, and 6 is a control circuit that controls change dispensing and coin collection operations. be. The pulse switch 2 generates a high level output in the standby state, and when the cam starts rotating due to the drive of the motor 1, the output becomes a low level, and the cam rotates once and one coin is ejected. The configuration is such that the level becomes high again. The change dispensing operation by such a coin dispensing control device will be explained using the timing chart in FIG.
When the control circuit 6 decides to pay out change, it first sets the input/output terminal A to a low level and drives the motor 1. When the signal PSW of the pulse switch 2 interlocked with the cam is reversed from a high level to a low level due to the drive of the motor 1, the motor 1 is maintained in its energized path by the free-running circuit 5. When the cam rotates approximately one rotation, the pulse switch signal PSW becomes high level again, and the free-running circuit 5 is de-energized and the motor 1 is stopped. According to the timing chart, the power M to motor 1 is cut off in synchronization with the rise of the pulse switch signal PSW to a high level, but in reality, the pulse switch signal is cut off due to overrun.
The cam will stop during the high level of PSW. In the timing chart, the control circuit 6 outputs a low level pulse three times to pay out a total of three coins. Also, when collecting coins, press coin collection switch 3.
When turned on, the motor 1 is driven through the coin collection switch 3 to form an energized path, and performs a coin dispensing operation and a coin collection operation. When the coin collection switch 3 is turned OFF at the end of collection, the motor 1 is de-energized and stops. At this time, if the coin collection switch 3 is turned OFF while the pulse switch signal PSW is at a high level, the cam pulses. The switch signal PSW may stop just before changing from high level to low level. If the coin dispensing control device remains in this state and the vending machine enters the customer waiting state, if the cam moves even slightly due to vibration from the outside, the pulse switch signal PSW will be reversed to a low level, and the motor 1 will start automatically. There is a problem in that the running circuit 5 is energized and driven, and coins are dispensed without permission.

In view of the above, the present invention provides a coin dispensing control device that always stops the cam within the appropriate range no matter when coin collection ends.

(d) Measures to solve the problem When the switch device 2 that is linked to the rotation of the cam stops the power supply to the motor 1, the power to the motor 1 formed based on the operation of the coin collection switch 3 is A memory device 4 is provided which is set when the energization path is opened and reset when the switch device 2 starts energizing the motor 1. During the setting period of the storage device 4, a power supply path to the motor 1 is formed.

(E) Function When the coin collecting operation is completed within the period during which the switch device 2 stops energizing the motor 1, the energization of the motor 1 is continued by setting the memory device 4. When the switch device 2 comes to form an energizing path to the motor 1, the memory device 4 is reset, but the motor 1 is still energized through this energizing path. Then, when the switch device 2 switches and stops energizing the motor 1, the motor 1 stops. Therefore, the cam stops immediately after the switch device 2 switches to stop energizing the motor 1.

(F) Embodiment FIG. 3 shows an example in which the control circuit 6 in FIG. 1 is constructed based on the present invention, and the input/output terminal A
corresponds to the input/output terminal A in FIG. 1, and is connected to the connection point between the free-running circuit 5 and the coin recovery switch 3, although not shown in FIG. Pulse generation circuit 8
is connected to the coin collection switch 3 via the input/output terminal A, and when the input signal IA from the coin collection switch 3 switches from low level to high level, AND
A pulse is output to one input terminal of gate 9. The input terminal P corresponds to the input terminal P in Fig. 1,
Pulse switch signal from pulse switch 2
PSW is supplied to the other input terminal of AND gate 9 and also supplied to pulse generation circuit 10 through inverter 12 . Also, the flip-flop circuit 4
The set input side S and reset input side R of
It is connected to an AND gate 9 and a pulse generation circuit 10, and its output side Q is connected to an input/output terminal A via an inverter 11, to which it supplies an output signal OA.

The operation of the above circuit will be explained with reference to timing charts shown in FIGS. 4 and 5. First, in FIG. 4, when the coin collection switch 3 is turned on, the motor 1 is driven with a second energizing path formed by the path of +V-motor 1-self-running circuit 5-coin collection switch 3-ground.
Pulse switch signal while the switch is ON
Regardless of whether the PSW is high or low, it rotates and collects coins. When the coin collection switch 3 is turned off, a signal from a low level to a high level is input to the input/output terminal A of the control circuit 6, and the pulse generating circuit 8 generates a pulse. However, in this case, the input terminal P
Since the pulse switch signal PSW to is at a low level, no output is obtained from the AND gate 9, and the flip-flop circuit 4 is not set. In this way, when the coin collection switch 3 is turned off while the pulse switch signal PSW is at a low level, the free running circuit 5 operates to control +V - motor 1 - free running until the pulse switch signal PSW rises to a high level. A first energizing path is formed by the circuit 5 path, and the motor 1
is maintained, and at the same time as the pulse switch signal PSW rises to a high level, the motor 1 is de-energized and the cam stops within the proper range.

Next, the case where the coin collection switch 3 is turned off when the pulse switch signal PSW is at a high level will be explained with reference to the timing chart of FIG. In Fig. 5, the signal state of input/output terminal A is referred to as an input signal.
IA and output signal OA are shown separately. At this time, when the coin collection switch 3 is turned OFF, the input signal is
When IA changes from a low level to a high level, a pulse is generated from the pulse generating circuit 8, and since the pulse switch signal PSW is at a high level, the flip-flop circuit 4 is set. Since the output side of the inverter 11 becomes low level due to the setting of the flip-flop circuit 4, the output signal OA from the input/output terminal A becomes a low level, and the motor 1 outputs +V - motor 1 - free running circuit 5 - input/output terminal A. 3rd route
An energizing path is formed to continue driving. When the pulse switch signal PSW becomes low level, the output of the inverter 12 rises to a high level, a pulse is generated in the pulse generation circuit 10, and the flip-flop circuit 4 is reset. Free running circuit 5
Due to this action, the motor 1 continues to be driven in order to form the above-mentioned first energizing path, and when the pulse switch signal PSW becomes high level again, the motor 1 is de-energized and stops. When the coin collection switch 3 is turned off while the pulse switch signal is at a high level, the flip-flop circuit 4 continues to drive the motor 1 while the pulse switch signal is at a high level. and pulse switch signal
After the PSW becomes a low level, rotation is continued by the free-running circuit 5 under normal control, and when the pulse switch signal PSW becomes a high level again, the cam is always kept within the appropriate range after coin collection in order to stop the motor 1. can be stopped.

(g) Effects of the invention According to the invention, even if the energization path to the motor formed based on the operation of the coin collection switch is cut off at any timing, the switch device switches to stop energizing the motor. The cam can be stopped immediately after. Therefore, when the cam moves slightly due to vibration, the switch device switches, thereby forming an energizing path for the motor.
No coins are ever dispensed.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of the coin dispensing control device, FIG. 2 is an operation timing chart, FIG. 3 is a control circuit diagram according to the present invention, and FIGS. 4 and 5 are operation timing charts according to the present invention. 1...Motor, 2...Switch device, 3...Coin collection switch, 4...Storage device.

Claims (1)

[Scope of utility model registration request] In a device that dispenses a predetermined number of coins each time a cam is rotated by a motor, the switch is interlocked with the cam and forms a first energizing path for the motor within a period of one rotation of the cam. a coin collection switch that, when operated, forms a second energization path for the motor; and a coin collection switch that opens the second energization path by the coin collection switch while the switch device opens the first energization path. a storage device that is set when the switch device is set and reset by closing the first energizing path of the switch device, and a third energizing path is formed in the motor during the setting period of the storage device. Payout control device.