JPH03289980A - Pachinko ball discharging device - Google Patents

Abstract

PURPOSE:To discharge the given number of PACHINKO (Japanese pin ball game) balls at a high speed by counting the given number of balls by a sensor means, short-circuiting two terminals simultaneously with disconnection of a feed to a DC permanent magnet motor responding to a discharge completion signal, and causing a motor itself to effect generation brake to stop a rotary discharge mechanism. CONSTITUTION:When the speed of a DC permanent magnet motor 15 is controlled through PWM control, a proper speed is previously experimentally determined, and a pulse width duty ratio is determined so that a speed is adjusted to the proper value. In preparation for this case, the speed of PACHINKO (Japanese pin ball game) ball discharged from a rotary discharge mechanism 40 is measured or a speed sensor is located on a rotary shaft in the rotary discharge mechanism 40. By making feedback of a speed signal, the pulse width duty ratio of a PWM is automatically controlled so that a speed is always adjusted to an optimum value.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a pachinko ball ejecting device, and relates to a device that ejects a predetermined number of winning balls as prizes or a predetermined number of rented balls by inserting coins. .

[Prior art and the problem to be solved by the invention] Conventionally, prize balls are ejected using mechanical prize balls that are generally attached to the back of the pachinko game board and operate by transmitting the physical force generated by the weight of the winning balls. It consisted of an ejector. However, in this conventional method, (1) the structural mechanism is complicated, assembly is troublesome, and maintenance and inspection are difficult.

■ Ball ejection time is slow when there are many winning balls).

■Poor durability.

It has the disadvantage of

In contrast to the conventional purely mechanical ejecting devices as described above, electric ejecting devices have been proposed in recent years.

(JP-A-59-209372, JP-A-59-88180
etc). In this system, a rotary sprocket is disposed at the downstream end of a guide path for prize balls from a prize ball storage section, and the sprocket is rotated by a pulse motor or an AC motor to eject the balls. However, although the pulse motor type has the advantage of good speed control and positioning accuracy, it has the problem that the cost of the pulse motor and its driver circuit increases.

■Although the AC motor type is cheap and allows speed control, it has the problem of poor stopping accuracy.

■Therefore, in the case of an AC motor type, the sprocket is mechanically stopped using a stopper gear and pawls when stopped, but there is a problem in that mechanical friction becomes large.

On the other hand, there is also a method of ejecting the balls while turning on and off a clapper-type electromagnetic solenoid, but this method has problems with the durability of the solenoid and noise.

[Purpose of the invention]

The object of the present invention is to improve the problems of electric motors, which have been proposed in an attempt to solve the above-mentioned drawbacks of purely mechanical motors. That is, (1) The drive motor itself has braking performance when stopped.

■Set the drive motor speed to match the mechanism and ball ejection mode.

■Achieve a robust, highly accurate, and high-speed ball ejection device.

[Means to solve the problem]

In order to achieve the above object distantly, the pachinko ball ejecting device of the present invention includes: a rotating ejecting mechanism that ejects a predetermined number of balls according to the number of rotations; a DC permanent magnet motor that drives the rotating ejecting mechanism;
a motor control circuit for applying a DC voltage to the DC permanent magnet motor; a ball sensor means for counting the ejection of balls; This motor is characterized by having a brake circuit that cuts off the DC voltage to the magnet motor and at the same time shorts both terminals of the DC permanent magnet motor to brake its rotation.

Another feature of the present invention is a motor control system that controls the rotational speed of the DC permanent magnet motor by applying a high frequency pulsed DC voltage to the permanent magnet motor and controlling the pulse width duty ratio of the high frequency pulse. The reason lies in the fact that the circuit has been installed.

Further, the features of the present invention will be explained with reference to the program flowchart shown in FIG. It has a timer means to set the time,
A first ball ejection mode that performs intermittent and repeated ejection using the timer time, and a second ball ejection mode that continuously ejects a number of balls exceeding the predetermined number at once without using the timer time. In the first ball ejection mode, a certain amount of balls that have fallen during the pause period set by the timer are accumulated, so that when ejecting the balls, the balls are successively and cleanly bitten into the above-mentioned rotating ejecting mechanism. However, in the second ball ejection mode, there is no rest period, so at the same speed as in the first bolt ejection mode, the naturally falling balls cannot catch up, and gaps are created between the balls. The purpose of the above-mentioned second method is to prevent the ball from being impossible to eject smoothly due to the ball bouncing up, etc.
The pulse width duty ratio in the first ball ejection mode is made smaller than that in the first ball ejection mode, and the rotational speed of the DC permanent magnet motor is reduced.

In addition, in the system using the one-chip microcomputer shown in Fig. 3, the time it takes for the ball to pass through a rotary discharge mechanism such as a single lead screw type or Geneva gear type can be measured, or the speed of the rotation axis of the rotary discharge mechanism can be measured. By providing a sensor and feeding back the speed signal, the pulse width duty ratio is automatically controlled so that the speed is always optimal, thereby enabling efficient control.

〔Example〕

FIG. 1 is a rear perspective view of a pachinko game machine to which the pachinko ball ejecting device of the present invention is applied.

In the figure, 1 is a machine frame, 2 is a front frame that is attached to the front of the machine frame 1 so that it can be opened and closed, and 2A is a game board that is detachably attached to the back of the front frame 2 via a mounting frame. .

Reference numeral 3 denotes a prize ball storage section provided at the upper part of the back surface of the game board 2A; 4 denotes an inclined ball lead-out section for rectifying the prize money from the ball storage section 3 when the prize ball is ejected; 5 denotes the ball lead-out section 4; This is a ball discharge gutter that allows the prize, which is formed almost vertically, to naturally fall vertically from the downstream end of the ball.

Reference numeral 6 denotes a part in which the rotary discharge mechanism and its drive motor according to the present invention are housed, and functions to discharge the balls remaining in the ball storage section 3 during prize payout at the time of prize winning and at closing time. .

Reference numeral 7 designates a passageway for discharging prize balls, and numeral 8 denotes a passageway for discharging remaining balls when the store is closed.

Reference numeral 9 denotes an electric circuit housing section for controlling the drive of the pachinko ball discharging device in the present invention.

FIG. 2 is a first embodiment of the present invention, and is a diagram for explaining the structure and movement of a one-screw type rotary discharge mechanism.

In the figure, 10 is a lead screw, and a ball 12 is held by a flange 11 formed spirally around its circumference.
As shown in FIG. 2 a% d, the lead screw 1O is rotated to sequentially feed it downward and discharged at point a.

Reference numeral 13 denotes a first ball sensor means for detecting whether or not there is a ball on the flange 11, which is a ball blocking and guiding means according to the Prize Act, and in the case of the embodiment, a photo sensor is shown.

Reference numeral 14 denotes a second ball sensor means for counting the number of balls ejected by the lead screw 10 at a rate of one per revolution, as shown in a to d of FIG.

15 is a DC permanent magnet motor, which drives the lead screw 10 via gears 16 and 17. In this embodiment, the rotation ratio of gears 17 and 16 is 1/2. That is, the shaft of the DC permanent magnet motor 15 rotates twice and the lead screw 10 rotates once.

Therefore, the shaft gear of the DC permanent magnet motor 15 rotates twice from when one ball is ejected at the time point in FIG. 2A until the next ball is ejected.

This means that the DC permanent magnet motor 15 only has to stop within two revolutions after discharging a predetermined number of prizes.

The rotational relationship between the shaft gear 16 of the DC permanent magnet motor 15 and the shaft gear 17 of the lead screw is shown in FIG.

FIG. 3 is a block diagram showing an embodiment of the electrical control of the pachinko ball ejecting device according to the present invention, which is constructed from a one-chip microcomputer system.

In the figure, reference numeral 13 denotes a first sensor that determines the presence or absence of a premium law, and reference numeral 14 denotes a second sensor that counts the number of premium laws.

Reference numeral 22 denotes an incoming ball counting sensor, whose signals are inputted to the microcomputer G, and a predetermined number of prizes are dispensed every time the incoming ball 1a is detected.

15 is the aforementioned DC permanent magnet motor, 27 is a motor control circuit for controlling the rotational speed of the DC permanent magnet motor 15, and the motor control circuit 27 receives a signal from a PWM (pulse width modulation) controlled computer. is connected.

24, a brake circuit for the DC permanent magnet motor 15;
Reference numeral 5 denotes a 1itN solenoid for switching from the prize law aisle to another aisle when discharging the balls in the ball storage section 3 using the ball ejection device of the present invention when a pachinko parlor is closed or the like. .

26 is a driver circuit for the magnetic solenoid described above.

FIG. 4 shows an actual circuit example of a sensor circuit and a motor control circuit. Note that this circuit example does not use a one-chip microcomputer as shown in Figure 3, but a CP
A case is shown in which the case is compatible with a microcomputer system having separate U, ROM, RAM (not shown), and input interface circuit I10, and accordingly, the PWM control circuit is also shown as external hardware.

In FIG. 4, 130 is a photosensor, which is operated by a photodiode and a phototransistor.

131 and 132 are load resistances for each of the photodiode and phototransistor, resistors 133 and 134 are voltage dividing resistances of Vcc, and the midpoint 135 of them is connected to the negative terminal of the comparator 136 with a voltage of Y$ lightning voltage. .

The output voltage of the phototransistor is connected to the positive terminal of the comparator 136 via a resistor 37 as a comparison voltage.

138 is a feedback resistor of the comparator 136, and 139 is a pull-up resistor.

The output voltage of the comparator 136 becomes H level when the output voltage of the phototransistor applied to the positive terminal of the comparator 136 exceeds a certain level.

At this time, there is no bulb between the photodiode and the phototransistor, and the light from the photodiode is projected onto the phototransistor.

When a sphere exists in the photosensor section and the light is blocked, the comparison voltage of the comparator becomes L level, and the output voltage of the comparator 136 becomes L level.

The operation of the comparator circuit described above has hysteresis characteristics with respect to the input voltage.

- the voltage from the first ball sensor circuit described above, ie the output voltage of the comparator 136, is input to the input terminal FAI of the I10 interface 21;

With the same circuit configuration, the output voltage of the second ball sensor is PA2
, the output voltage of the winning sensor circuit is connected and input to PA3.

220 is an N-channel MO3-FET (MO3 field effect transistor) which is turned on when the voltage of the gate G is H.

221 is the gate resistance, 222 is the buffer, 223 is N
The ON signal of the DC permanent magnet motor 15 from the microcomputer system via the buffer 224 and the H level of the pulse waveform from the PWM control circuit 23 are ANDed by an AND gate.

As a result, the MOS-FET 220 is turned on only when the AND of the motor ○N signal from the input port PB2 of the l1021 and the H level of the PWM control waveform is established, and both terminals of the DC permanent magnet motor]5 are connected to the PWM control waveform. A controlled DC voltage is applied.

2401, the voltage of the gate G of the P channel MOS-FET is turned on at L level.

241 is a gate resistor, and when the transistor 242 is on, the voltage of the gate 1-G is drawn to the source voltage S via the gate resistor 241.

243 is a load resistance, 244 is a gate resistance of the transistor 242, and 245 is a buffer for the brake signal from the output port PB1 of the l1021.

This turns the motor ON signal from PB2 OFF and M
Immediately after the OS-FET 220 is turned off, when the L level of the brake signal is output from the PBI, the H level is applied to the gate of the transistor 242 via the buffer 245, and the transistor 242 is turned on.

Therefore, the MOS-FET 240 is turned on, and both terminals of the DC permanent magnet motor 15 are short-circuited.

At this time, the armature of the DC permanent magnet motor 15 is rotating due to inertia, so a generated current flows through the armature coil, which is short-circuited by the MOS-FET 240, by cutting off the magnetic fields of the magnets N and S. .

Since the torque generated by this generated IT current is in the opposite direction to the direction in which it rotates due to inertia, a dynamic braking force acts on the DC permanent magnet motor 15.

Diode 246 is MOS-FET 22 during braking.
This is a safety circuit to ensure that 0 is never turned on.

NAND gates 231, 232, capacitor 2
The circuit consisting of 34° resistors 233, 235, and 236 is a multi-bye break circuit that determines the period of the PWM control waveform described above.

A circuit comprising a capacitor 237, resistors 23B and 239, and a one-shot multi-by-break 230 is a circuit that determines the PWM control waveform duty ratio described above.

The one-shot multi-bye break circuit 230 is triggered in synchronization with the rise of the rectangular oscillation waveform applied to the input terminal B, and the resistor 239 and capacitor 2
The output terminal Q is set to H level for a time constant determined by 37.

This period (4) is shorter than the period of the multi-high break circuit.

250 is an N-channel MO3- for driving the solenoid 25.
FET, and its gate G is connected from output port PB3 to L.
When a level signal is applied via the buffer 251 and resistor 252, it turns on.

Diodes 151 and 253 are connected to the DC permanent magnet motor 15.
, and act as freewheel diodes for the solenoids 25, respectively.

FIG. 5 is an explanatory diagram of PWM control.

In Figure 5, A is the NA in the multi-bye break circuit.
Output waveforms B and C of the ND gate 232 are waveforms of the output terminal Q of the one-shot multi-high break 230.

The pulse value of B is shorter than the pulse width of C.

That is, the duty ratio is small, which means that the value of the resistor 239 is set smaller than that in the case of C.

That is, this is the case where the resistor R2 is short-circuited by the reed switch SW.

The opening and closing of the reed switch SW is performed by commands from the aforementioned microcomputer system (the specific circuit is omitted).

Both pulse waveforms B and C are triggered in synchronization with the rising edge of rectangular wave A.

In the figure, c is a waveform actually applied to the DC permanent magnet motor 15 corresponding to B and C described above.

The period T1 is the period of waveform A, and the pulse width T2 is the period of waveform B.
The pulse width T3 is the same as the pulse width of waveform C. Peak values of b and c Motor voltage 2 shown in Fig. 4
4V, and the averaged DC voltage of b is shown in Figure 5, c
As shown by the dotted line, the DC voltage is lower than that in case C.

Therefore, the rotational speed of the DC permanent magnet motor 15 is lower at 6 o'clock.

FIG. 6 is a program flowchart in the microcomputer system of the pachinko ball ejecting device according to the present invention.

When the program starts and it is recognized at 261 that there are winning balls, the number of winning balls is set in the register D at 263.

Next, in step 265, the number of prize balls per winning ball (ili usually 13) is set in register E.

Next, at step 266, the first ball sensor 13 described above detects whether or not a prize ball is present at the rotating ejecting mechanism, and if it is detected, the DC permanent magnet motor 15 of the rotating ejecting mechanism is currently activated. It is checked whether the drive is in progress, and if the drive is not in progress, the drive is started in 268.

PWM control JBI here indicates high-speed operation of PWM control duty-sinking.

When the lead screw type rotary ejection mechanism according to the present invention starts to rotate, the pachinko balls are released into the lead screw's flange 11.
As the ball rotates, it is guided downward and finally falls.

This is detected by the second ball sensor 14 at 269 and 27.
0, and register E is decremented by 1 at 271.

Unless the subtraction result is 0, return from 272 to 264E
Repeat until it becomes OG.

When E becomes O, check at 273 whether there is a designation to eject the number of winning balls set in register D in -. (Is this designation specified at the pachinko machine manufacturing stage? (or be automatically specified depending on the winning mode), - If the bracket is not specified, the power supply to the DC permanent magnet motor 15 is cut off at 274, and dynamic braking is immediately applied to stop the motor.

Next, in step 284, the winning ball register D is decremented by 1 by a timer for a certain period of time.

If D=O, the process returns from 275 to 262, and the number of prizes per time is set in register E again.

Then, discharging 13 prizes at a time is repeated intermittently until the value of register D becomes 0.

When D=O, return to the starting point from 275.

In the above, if 273 is specified all at once, 274 will not be used to stop or pause for a certain period of time.
The process branches to step 76 and is continuously discharged all at once until the value of register D becomes O.

When D=O at 275, the motor is turned off at 285 and a dynamic brake is applied.

This collective ejection method has the advantage that there is no need to perform calculations such as multiplying and matching the number of winning balls in a predetermined number of prizes. In addition, in this mode, if the rotational speed of the motor is high, the balls falling in the ball discharge gutter will not be continuously connected, and will bounce up on the lead screw mechanism, resulting in the balls biting into the threaded part of the lead screw. There is a risk that it will become jammed and lock the lead screw. Therefore, in this continuous operation mode, the rotation speed of the lead screw is slower than in the intermittent operation mode.
The duty ratio is small. 277 is a waiting loop of 277-269-264-266-277 for a certain period of time when it is recognized that there is no prize law at the time of detection of the first ball sensor, that is, when the ball is not present at the rotating ejection mechanism. It has a waiting function. When it is recognized at 277 that a certain period of time has elapsed, the motor 278 is stopped, and the motor waits again in the above-mentioned standby loop while remaining stopped. In this state, there is no ball in the ball storage section 3, or the ball is stuck in the ball outlet section 4 or the like for some reason. When this condition is corrected and restored, a prize ball is present at 266, and the motor is automatically turned on at 268 to continue the ball ejection operation. The branch state to 279 is E at 272.
=O is recognized, and when the motor stops at 274, D is detected again.
= If it is not O, the next 13 prizes will be ejected, but at this time, there is only one subsequent prize, and the ball stops when it reaches state C in Figure 2. If so, 280 is where the motor is restarted and the ball is ejected.

Next, when discharging the balls in the storage section 3 when a pachinko parlor is closed, etc., branch from 260 to 281, and from 281, PWM control 2
The motor is controlled at low speed at 282, and J rotation is performed until it is recognized at 282 that there are no balls for a certain period of time, that is, until the end of ejection. When the discharge is completed, the process passes through 283 and becomes END.

FIG. 7 shows a Geneva gear system which is another embodiment of the rotary discharge mechanism of the present invention. 30 is a Geneva gear. that a3
1, the pin 33 protruding from the motor shaft pulley 32 enters as the motor rotates, rotating the Geneva gear. 7th
As shown in figures a, b, c, and d, the Geneva gear rotates by one tooth per rotation of the motor shaft. A sprocket 34 for capturing pachinko balls I2 is formed coaxially with the Geneva gear, and this sprocket 34 captures and ejects the balls as shown in FIG. 7a-d-a. The first ball sensor 13 and the second ball sensor 14 play the same role as in the case of the one-lead screw type described above.

The motor is the same as in the case of the lead screw one type described above, and a DC permanent magnet motor is adopted, and the speed is similarly controlled by pwM.

FIG. 8 shows a block diagram showing another embodiment of the electrical control circuit according to the present invention. In the embodiment shown in FIG. 4 described above, the PWM control circuit is configured separately from the computer, but in the case of FIG. 8, another embodiment is shown in which the PWM control circuit is housed within a one-chip microcomputer. . Therefore, PWM duty ratio control can also be executed by program instructions. In the figure, 40 indicates a rotary discharge mechanism such as the one-way lead screw type or Geneva tooth type described above, and 41 indicates a feedback speed signal for optimally controlling the speed of the DC permanent magnet motor 15.

When controlling the speed of the DC permanent magnet motor 15 by PWM control (for example, pwM*J control 1 and PWM control 12 shown in FIG. 6), the most appropriate speed is determined experimentally in advance, and the speed is adjusted to that speed. The pulse width duty ratio is determined as follows. However, in practice, it is not always possible to obtain the target speed due to torque fluctuations in the mechanism.
In preparation for such a case, in the embodiment shown in FIG. 8, the speed of the pachinko ball discharged from the rotary discharge mechanism 40 (specifically, the time it takes for the ball to pass the second ball sensor 14) is By measuring the speed or by providing a speed sensor on the rotating shaft in the rotary discharge mechanism 40 and feeding back the speed signal, it is possible to automatically control the PWM pulse width duty ratio so that the speed is always optimal. It is possible.

〔Effect of the invention〕

In the present invention, as described above, the rotary discharge mechanism is driven by a DC permanent magnet motor, and when a predetermined number of balls are counted by the ball sensor means, the power supply to the DC permanent magnet motor is cut off in response to a discharge completion signal. At the same time, by short-circuiting both terminals, the motor itself is dynamically braked to stop the rotating discharge mechanism, making it possible to discharge a predetermined number of pachinko balls with high precision and high speed. In addition, a motor control circuit is provided that controls the rotational speed of the DC permanent magnet motor by controlling the pulse width duty ratio of the high-frequency pulse, so it is possible to always perform optimal speed control that matches the ball ejection mode. .

[Brief explanation of drawings]

Fig. 1 is a rear perspective view of the pachinko ball discharging device of the present invention;
The figure is an embodiment of the lead screw one-type mechanism of the present invention, FIG. 3 is a control block diagram of an embodiment of the control circuit of the present invention, and FIG.
The figure is a circuit diagram corresponding to the control block diagram shown in Figure 3,
Fig. 5 is an explanatory diagram of PWM control, Fig. 6 is a program flowchart of another embodiment of the present invention and a pachinko ball discharging device, Fig. 7 is a diagram of an embodiment of the mechanism of the Geneva gear system of the present invention, and Fig. 8 is FIG. 3 is a block diagram of another embodiment of a control circuit according to the present invention. 13, 14.22... Sensor, 15... DC permanent magnet motor, 24... Brake circuit, 27... Motor control circuit, 40... Rotating discharge mechanism. Figure 1

Claims (4)

[Claims] (1) A rotating ejecting mechanism that ejects a predetermined number of balls according to the number of rotations, a DC permanent magnet motor that drives the rotating ejecting mechanism, a motor control circuit that applies a DC voltage to the DC permanent magnet motor, and sphere sensor means for counting emissions;
In response to an ejection end signal of a predetermined number of balls counted by the ball sensor means, the DC voltage to the DC permanent magnet motor is cut off, and at the same time, both terminals of the DC permanent magnet motor are short-circuited to stop the rotation of the DC permanent magnet motor. A pachinko ball ejecting device characterized by having a brake circuit that applies braking. (2) A motor control circuit is provided that applies a high frequency pulsed DC voltage to the permanent magnet motor and controls the rotational speed of the DC permanent magnet motor by controlling the pulse width duty ratio of the high frequency pulse. Claims (
The pachinko ball ejecting device described in 1). (3) When continuously and repeatedly discharging a predetermined number of balls, a timer means is provided to set a predetermined pause time between the previous predetermined number of ejections and the next predetermined number of ejections, and the timer time is incorporated. a first ball ejection mode in which balls are ejected intermittently and repeatedly, and a second ball ejection mode in which balls exceeding the predetermined number are continuously ejected at once without incorporating the timer time, The pachinko ball ejecting device according to claim 2, wherein the pulse width duty ratio in the second ball ejecting mode is smaller than that in the first ball ejecting mode. (4) Measure the time it takes for the ball to pass through the rotating ejection mechanism, or
Alternatively, a speed sensor is provided on the rotating shaft of the rotating discharge mechanism,
The pachinko ball discharging device according to claim 2, wherein the pulse width duty ratio of the motor control circuit is optimally controlled by feeding back the speed signal to the motor control circuit.