JPH0531230A - System for adjusting hitting force for pinball machine and circuit therefor - Google Patents

Abstract

PURPOSE:To control hitting force by providing a means for controlling a driving time in a driving circuit of a solenoid for driving a ball hitting for hitting a ball. CONSTITUTION:To a driving circuit 2 of a solenoid 1 for driving a ball hitting lever 3, a turn-on time calculating circuit 4 which is driven by a trigger pulse for discharge, and also, has a switching function is connected and a driving time of the solenoid 1 is allowed to correspond to pulse width of one driving pulse, and by connecting a variable resistor 5 of a handle of the ball hitting lever 5 to the turn-on time calculating circuit 4 and varying this resistance value and varying the pulse width, hitting force of the ball hitting lever is controlled. Also, by applying a voltage fluctuation portion of the driving circuit 2 to the turn-on time calculating circuit 4 and compensating its voltage fluctuation portion, the pulse width is controlled more exactly. In such a way, it is unnecessary to consume useless power, thus makes this system economical, and heating from the variable resistor is also small. Also, by allowing it to correspond to a variation portion caused by a fluctuation of a driving voltage of the driving circuit of the solenoid, the pulse width can be controlled more exactly.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system and a circuit for adjusting the striking force of balls of a pachinko machine.

[0002]

2. Description of the Related Art Conventionally, in electric pachinko machines,
When hitting a ball, a solenoid is used, but the hitting force must be freely adjustable by the player. Therefore, as a method of adjusting the striking force, a variable resistor connected in series with the solenoid is arranged in the handle. Therefore, there is a device in which the resistance value changes when the player operates the steering wheel, so that the drive current of the solenoid is controlled and the hitting force can be adjusted.

Further, as shown in FIG. 10, a solenoid 50
There is a transistor in which the current supplied to the transistor 51 is chopped at a relatively high frequency so that either the duty ratio or the period can be adjusted by operating the handle.

A transistor 51 and a power source 52 are connected to a solenoid 50 that drives a ball striking rod of a pachinko machine. This transistor 51 is an AND gate 5
ON / OFF operation is performed by a pulse-shaped gate current supplied from 3.

Reference numeral 54 is a first oscillator for determining a hitting cycle, and a switch circuit 55 is turned on / off by a player operating a handle to oscillate, and this signal is ANDed.
It is input to the gate 53 as a gate signal.

On the other hand, the output of the second oscillator 56 that determines the chopping cycle is input to the duty ratio determination circuit 57, and the rectangular wave signal of the duty ratio designated by the handle 58 is AND gate 53. To enter.

In such a configuration, the switch circuit 5
When 5 is turned on, the first oscillator 54 oscillates, and this signal is input to the AND gate 53, so that the second oscillator 56
Is chopped, and the transistor 51 is turned on while being chopped. Therefore, the solenoid 5
The current flowing through 0 has a sawtooth waveform due to the chopping action, and its average current is proportional to the striking force of the solenoid 50.

Therefore, if the player operates the handle 58, either the duty ratio or the cycle can be adjusted, and the striking force can be adjusted.

[0009]

In the former type, the electric power supplied to the solenoid is adjusted by consuming the electric power by the variable resistor, which wastes the electric power and is uneconomical. In addition, there is a problem in that the heat generated from the variable resistor becomes large and a large variable resistor is required.

In the latter type, a waveform with a narrow pulse width is generated, and the average value thereof is the drive current of the solenoid 50. Therefore, the duty ratio of chopping remains unchanged and the frequency is changed. Since the striking force is adjusted by changing the average current which is the drive current of the solenoid 50, the power consumption and the heat generation are less than those of the former type, but the drive voltage due to the fluctuation of the power supply 52 of the solenoid 50. There was a problem that we could not respond to the changes in.

[0011]

SUMMARY OF THE INVENTION The present invention provides a drive circuit of a solenoid for driving a ball hitting rod for hitting a ball,
A means for connecting an on-time calculation circuit, which is driven by a trigger pulse for firing and has a switching function, so that the drive time of the solenoid corresponds to the pulse width of one drive pulse and controls the pulse width of this drive pulse. Is provided in the on-time calculation circuit to control the striking force of the ball.

Further, by applying the voltage fluctuation amount of the solenoid drive circuit to the on-time calculation circuit, the pulse width of the drive pulse corresponding to the drive time of the solenoid is increased or decreased to more accurately hit the ball. It is designed to control force.

[0013]

The ball striking the ball is driven by a solenoid. Therefore, the drive pulse corresponding to the drive time of the solenoid is driven by the firing trigger pulse, and is made to correspond to the pulse width of one drive pulse by the on-time calculation circuit having the switching function. This pulse width is determined by a time constant consisting of the capacitance of a capacitor connected to the on-time calculation circuit and the resistance value of a variable resistor that changes its resistance value in conjunction with the handle. Therefore, the pulse width of the drive pulse of the solenoid is controlled by changing the resistance value of the variable resistor. That is, if the pulse width of the drive pulse changes, the driving time of the solenoid changes, and the striking force can be changed accordingly. Further, by applying the voltage fluctuation amount of the solenoid drive circuit to the on-time calculation circuit, the pulse width of the drive pulse is increased or decreased to compensate the fluctuation due to the fluctuation amount of the drive voltage.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First, the basic principle of the present invention will be described with reference to FIGS. As described above, in the conventional chopper system, a waveform having a narrow pulse width is used and averaged to form the drive current waveform of the solenoid, but in the present invention, one drive current waveform is used. A driving pulse is used, and the striking force is controlled by controlling the pulse width of this driving pulse.

FIG. 1 shows a basic circuit diagram of the present invention. Reference numeral 1 is a solenoid, 2 is a drive circuit for the solenoid 1, and 3 is a ball hitting ball for hitting a ball, which is driven by the solenoid 1. An on-time calculation circuit 4 is driven by the firing trigger pulse from the ball firing trigger pulse generation circuit 7 and has a switching function. The pulse width of the drive pulse output from this circuit is the solenoid 1 It corresponds to the driving time of. Reference numeral 5 is a variable resistor arranged in a handle (not shown), and its resistance value r is changed by the player operating the handle.

With this configuration, when the firing trigger pulse from the ball firing trigger pulse generation circuit 7 is input to the on-time calculation circuit 4, this circuit is turned on. When the player operates the handle, the resistance value r of the variable resistor 5 changes, so that a drive pulse having a pulse width corresponding to the drive time of the solenoid 1 is output, and the solenoid 1 is operated for a time corresponding to the pulse width of this drive pulse. Is driven. In this way, the pulse width t of the drive pulse corresponding to the drive time of the solenoid 1 can be controlled by changing the resistance value r.

FIG. 2 is a diagram showing the relationship between the time t on the abscissa and the drive current of the solenoid and the position of the hitting rod on the ordinate, and the L line indicates the hitting point.

When the handle is operated to change the resistance value r of the variable resistor 5, the pulse width t of the drive current (drive pulse) changes. When the pulse width becomes t ₁ , the driving current of the solenoid 1 is turned off at the point p ₁ , so that the ball striking rod 3 loses its acceleration force and its speed gradually increases (the slope of the dotted line L ₁ ).
Becomes smaller, the striking force of the batting rod 3 becomes smaller and the flight distance of the ball decreases.

Next, when the pulse width of the driving pulse becomes t ₂ , the driving current is turned off at the point p _{2 in the same} manner as described above, so that the velocity of the hitting rod 3 becomes large (dotted line L). ₂ ), the striking force of the batting rod 3 becomes large, and the flight distance of the ball increases. Therefore, as is apparent from the graph of FIG. 2, the striking force of the striking rod 3 can be controlled by controlling the pulse width t.

Therefore, the pulse width t of the drive pulse indicating the drive time of the solenoid 1 is determined by the on-time calculation circuit 4 by the resistance value r of the variable resistor 5 arranged in the handle as shown in FIG. To be done. Therefore, when the player changes the resistance value r, the pulse width t of the drive pulse is changed in the on-time calculation circuit 4, the solenoid 1 is driven for a time corresponding to this pulse width t, and the ball is hit by the hitting rod 3. To be done.

Next, a specific embodiment in which the pulse width t of the drive pulse can be controlled will be described below.

FIG. 3 shows a concrete first embodiment of the present invention, which uses a monostable multivibrator (hereinafter referred to as MM) 10 as an on-time calculation circuit. At the input end, a capacitor of capacitance C and MM1
The fixed resistor r _{1 of} 0 and the variable resistor 5 in the handle are connected in series. Reference numeral 11 drives the MM 10 with a ball emitting trigger pulse from the ball emitting trigger pulse generating circuit 7 shown in FIG.

For example, if 99 balls are fired in 1 minute,
Since one firing trigger pulse 11 is emitted for each ball, 99 firing trigger pulses 11 per minute are M
It will be input to M10.

When the firing trigger pulse 11 enters the MM10, the output of the MM10 is the drive pulse 13 having a pulse width of t = kc (r + r ₁ ). here,
k is a constant. Therefore, if the resistance value r of the variable resistor 5 is changed, the drive pulse 1 corresponding to the drive time of the solenoid 1 is changed.
3 is output, and the pulse width t changes as the resistance value r changes, as is clear from the above equation.
It can be controlled by this resistance value r.

FIG. 4 shows a second embodiment of the present invention. In this embodiment, a resistance value r of the variable resistor 5 in the handle is used by using a computer (hereinafter referred to as CPU) 15.
Is digitally converted by the A / D converter 14 and taken into the CPU 15, and the pulse width t of the drive pulse is converted by the resistance value r.
Is calculated, and the t time output is turned on based on the result.

The pulse width t of the drive pulse corresponding to the drive time of the solenoid 1 is represented by t = a + br. Here, a and b are constants determined by the solenoid 1. For example, a = 18 msec, the variable range of the pulse width t is 1
Assuming 8 to 38 msec, the pulse width t of the drive pulse is variable for 20 msec. Therefore, if the resistance value r of the variable resistor 5 is divided into 100, it becomes 0.2 msec, and b = 0.2.
Determined as msec. Therefore, the pulse width t of the drive pulse
Is expressed as t = 18 + 0.2r.

Next, the operation of the CPU 15 will be described with reference to the flow chart shown in FIG. First, it is determined whether or not there is a trigger pulse for firing. When a trigger pulse for firing is input, the resistance value r is output from the variable resistor 5 on the handle.
Is taken in and the pulse width t = a + br of the drive pulse is determined. The output is turned on when the pulse width t is determined.

Next, it is determined whether the time after the output is turned on is t. When the time after the output is turned on is not t, the output is turned back on, and this cycle is repeatedly waited until the time after the output is turned on. In this state, when the time after the output is turned on becomes t, the result is YES, the output is turned off, and the drive pulse having the pulse width t is output. After this operation is completed, it returns to the original state again. In this way, by changing the resistance value r and controlling the pulse width t of the driving pulse, the driving time of the solenoid 1 is controlled and the striking force of the ball is controlled.

FIG. 6 shows a third embodiment of the present invention, in which the change in the pulse width t of the drive pulse due to the change in the drive voltage of the solenoid 1 (the change in the voltage of the drive circuit) is added to obtain the accuracy. You have good control.

In general, the pulse width t of the driving pulse when the fluctuation of the driving voltage of the solenoid 1 is taken into consideration is represented by t = a + br-cv. c is a constant for adding the drive voltage v. From the above equation, the pulse width t of the drive pulse becomes shorter as the drive voltage v of the solenoid 1 becomes higher.

Therefore, in this embodiment, the fluctuation of the drive voltage v of the solenoid 1 detected by the voltage fluctuation detecting circuit 8 is applied to the point A, and the fluctuation of the pulse width t due to the fluctuation of the drive voltage v is applied. The pulse width t of the drive pulse is determined in consideration of the above.

First, the current component corresponding to the variation of the drive voltage of the solenoid 1 is amplified by the current amplifier 16 to obtain the current i.
₂ is applied to point A. Therefore, at point A, this current i ₂ and the current i ₁ from the variable resistor 5 in the handle are
And are added, and i ₀ = i ₁ + i ₂ . Since the current i ₀ is proportional to the pulse width t of the drive pulse 13 output from the MM 10, the fluctuation of the pulse width t due to the fluctuation of the driving voltage of the solenoid 1 is also compensated for and the accurate control is performed. become. MM10
The drive pulse 13 from is amplified by the amplifier 9 and then applied to the solenoid 1 to drive it. Reference numeral 17 is a diode for preventing backflow.

FIG. 7 shows a fourth embodiment of the present invention. The solenoid 1 is added to the second embodiment shown in FIG.
The variation of the pulse width t of the driving pulse due to the variation of the driving voltage is taken into consideration. Similarly to the case shown in FIG. 4, the current flowing through the variable resistor 5 having the resistance value r in the handle is set to A / D.
The converter 14 converts from analog to digital and the CPU 1
5 is applied. On the other hand, the voltage fluctuation detected by the voltage fluctuation detecting circuit 8 from the drive circuit of the solenoid 1 is
The digital quantity is converted by the / D converter 18 into the CPU 15
Is applied to compensate for the fluctuation of the drive voltage v.

8 and 9 show a fifth embodiment of the present invention. FIG. 8 is a block diagram of essential parts, FIG. 9 is a time chart diagram, 20 is a crystal oscillator, 21 is a counter, 22 is a flip-flop (hereinafter referred to as FF), 2
Reference numeral 3 denotes a gate circuit, which is intended to control the pulse width t of the drive pulse of the solenoid 1 more accurately and accurately by using the counter 21.

A specific example will be described. For example,
Here, if it is assumed that 99 pachinko balls are fired per minute, the time for firing one ball is 606 msec. Therefore, the counter 21 is configured to make one revolution in 606 msec. The counter 21 is controlled by the oscillator 20 having an oscillation frequency of 400 KHz.

Therefore, for example, as shown in FIGS. 9A and 9B, 100 msec and 118 msec trigger pulses are taken out from the counter 21 via the gate circuit 23, and the FF 22 is turned on after 100 msec. ,
When the FF 22 is turned off in 118 msec, a predetermined pulse having an accurate pulse width of 18 msec is obtained as shown in FIG. 9 (c).

On the other hand, the trigger pulse of 118 msec shown in FIG.
Is input to the MM10 to drive it. On the other hand, FIG.
As shown in (d), if the pulse width t of the drive pulse when the resistance value r of the variable resistor 5 in the handle is r,
At the point B, these are added, and as shown in FIG. 9E, T = (18 + t) msec. That is, the drive current (drive pulse) of the solenoid 1
Has a pulse width of T.

Therefore, since the unstable factor of the pulse width T of the drive current is only t, the time accuracy becomes very good.

In the case where the variation of the driving voltage of the solenoid 1 is also taken into consideration in this embodiment, as described in FIG.
If a variation of the drive voltage of the solenoid 1 is applied to point A shown in FIG. 8, a better effect can be obtained than that described in the third embodiment shown in FIG.

According to the present invention, a solenoid driving circuit for driving a ball striking a ball is driven by a firing trigger pulse and an on-time calculation circuit having a switching function is connected to the solenoid. Since the driving time of 1 is made to correspond to the pulse width of one driving pulse and the means for controlling the pulse width of this driving pulse is provided in the on-time calculation circuit, the striking force of the striking rod is controlled. As described above, it is economical without wasteful power consumption, heat generated from the variable resistor is reduced, and a large variable resistor is not required.

Further, since the pulse width of the drive pulse is increased or decreased by applying the voltage fluctuation amount of the solenoid drive circuit to the on-time calculation circuit, the change amount due to the fluctuation of the drive voltage of the solenoid drive circuit is also supported. Therefore, it can be controlled more accurately.

[Brief description of drawings]

FIG. 1 is a basic block diagram showing an embodiment of the present invention.

FIG. 2 is a graph for explaining the basic principle of the present invention.

FIG. 3 is a circuit diagram of essential parts showing a first embodiment of the present invention.

FIG. 4 is a diagram showing a second embodiment of the present invention.

5 is a flowchart of the second embodiment shown in FIG.

FIG. 6 is a circuit diagram of essential parts showing a third embodiment of the present invention.

FIG. 7 is a block diagram showing a fourth embodiment of the present invention.

FIG. 8 is a block diagram showing a fifth embodiment of the present invention.

FIG. 9 is a time chart of the fifth embodiment shown in FIG.

FIG. 10 is a block diagram showing a conventional example. 1 solenoid 2 Solenoid drive circuit 3 batting rods 4 On-time calculation circuit 5 Variable resistor in the handle 7 ball firing trigger pulse generation circuit 8 Voltage fluctuation detection circuit 11 Trigger pulse for firing 13 Drive pulse t Pulse width of drive pulse 13 r Resistance value of variable resistor v Solenoid drive voltage

Claims (8)

[Claims] 1. An on-time calculation circuit which is driven by a firing trigger pulse and has a switching function is connected to a drive circuit of a solenoid which drives a ball hitting a ball, and the drive time of the solenoid is set to 1 A striking force of a pachinko machine characterized by controlling the striking force of the striking rod by providing a means for controlling the pulse width of the driving pulse in the on-time calculation circuit in correspondence with the pulse width of one driving pulse. Adjustment method. 2. The striking force adjusting method for a pachinko machine according to claim 1, wherein the pulse width of the drive pulse is increased or decreased by applying a voltage fluctuation amount of the solenoid drive circuit to the on-time calculation circuit. 3. Driven by a trigger pulse for firing,
The resistance value of the monostable multivibrator that composes the on-time calculation circuit and the input end of this monostable multivibrator are linked to the capacitor and the handle that adjusts the striking force of the ball connected to this capacitor. Is connected to a variable resistor capable of varying, and by changing the resistance value of this variable resistor, the pulse width of the drive pulse corresponding to the drive time of the solenoid is determined by the time constant of this resistance value and the capacitance of the capacitor. A striking force adjustment circuit for pachinko machines that is characterized by control. 4. A voltage fluctuation detection circuit of a solenoid drive circuit is connected to a connection point between a capacitor connected to an input end of a monostable multivibrator and a variable resistor, and this voltage fluctuation detection circuit is connected. 4. The striking force adjusting circuit for a pachinko machine according to claim 3, wherein the fluctuation amount of the voltage of the drive circuit is applied. 5. A variable resistor in a handle, an AD converter for converting a resistance value of the variable resistor into a digital value, and a computer having a function of determining a pulse width of a drive pulse from the resistance value. A striking force adjusting circuit for a pachinko machine, comprising: controlling a pulse width of the drive pulse corresponding to a drive time of a solenoid by the resistance value. 6. A solenoid drive circuit, a voltage fluctuation detection circuit of this drive circuit, and a voltage fluctuation amount of the drive circuit from this voltage fluctuation detection circuit are digitally converted and connected to a computer. The striking force adjusting circuit for a pachinko machine according to claim 5, 7. An oscillator, a counter that is controlled by the oscillation frequency of the oscillator and that makes one round at a time corresponding to the firing time of one shot of a ball, an output of a predetermined time interval from this counter, and an output of this output. A logical addition is made with the output of a monostable multivibrator which is driven at the time of completion and whose output pulse width can be varied by a variable resistor in the handle, and this pulse is inputted to the drive circuit of the solenoid. Item 3. A circuit for adjusting the impact force of a pachinko machine according to Item 3. 8. A voltage fluctuation component from a solenoid drive circuit is applied to a connection point between a variable resistor and a capacitor connected to an input end of a monostable multivibrator. Circuit for adjusting the striking force of a pachinko machine.