JP3396347B2 - Solenoid drive circuit - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention, by arbitrarily controlling the magnetic field generated in the solenoid, Ru <br/> relates to a drive circuitry of the solenoid which can arbitrarily control the impact force of the ball in the pachinko machine It is a thing.

[0002]

2. Description of the Related Art Conventionally, a device capable of arbitrarily controlling a magnetic field generated in a solenoid has been widely used in various fields. For example, in an electric pachinko machine, a solenoid is used as a device for hitting a ball, and a ball is sent to a position required by a pachinko player by arbitrarily controlling a magnetic field generated in the solenoid.

The player controls the striking force by changing the resistance value of the variable resistor operated by the handle. That is, when the player operates the handle, the resistance value of the variable resistor is changed, and the striking force striking the ball is adjusted by controlling the voltage applied to the solenoid or the current flowing through the solenoid.

FIG. 5 shows a block diagram of a conventional pachinko machine ball striking solenoid drive circuit.

Power is supplied from the power supply unit 1 to the power conversion circuit 2 and DC power is supplied to the solenoid 3 to strike the ball. At this time, the striking force is changed by the electric power supplied to the solenoid 3. That is, the striking force can be controlled by changing the voltage or current of the electric power applied to the solenoid 3.

In order to vary the striking force, a circuit is provided in which the power applied to the solenoid 3 is fed back as a voltage, compared with a reference voltage 12 by a comparator 6, and a constant power is applied to the solenoid 3 by way of the control circuit 5. The variable resistor 11 is used to control the voltage fed back from the solenoid 3 to the comparator 6, thereby controlling the electric power applied to the solenoid 3.

[0007]

In the solenoid drive circuit, the resistance value of the variable resistor is changed in order to arbitrarily change the magnetic field generated in the solenoid.

Generally, in order to change the resistance value of the variable resistor, the electrodes provided on the resistor are slid to change the distance between the electrodes. Therefore, it is necessary to slide the electrode, and there is a contact part between the electrode and the resistor, and because the contact part slides, the contact part of the electrode is damaged by abrasion, and the intended resistance value can be stably obtained. It becomes difficult to control the electric power applied to the solenoid.

For example, in the case of a pachinko machine that operates a large number of handles a day, the life of the handle is shortened and the time for replacing the pachinko machine is shortened.

[0010] The present invention, any extended period of time, and by applying a constant magnetic field that stable, solenoid pachinko machine having a striking force very even if the number of steering stable balls this to provide a driving circuit
aimed to.

[0011]

In order to solve the above-mentioned problems, the invention according to claim 1 changes the voltage applied to the solenoid of the power conversion circuit to arbitrarily change the magnetic field generated by the solenoid, thereby pachinko machine. in the solenoid driver circuit for controlling the impact force of the ball in, based on the DC component of the output of the Rutotomoni oscillation circuit using a non-contact regulator
Set the voltage and adjust this non-contact regulator to create an oscillation circuit.
Change the oscillation frequency of and set the reference voltage arbitrarily ,
The voltage applied to the solenoid of the power conversion circuit and this reference
Compare with voltage and feed back to the power conversion circuit
It outputs a signal and responds to this feedback signal by
A solenoid drive circuit characterized by changing a voltage applied to the solenoid of a force conversion circuit .

Here, the non-contact adjuster refers to an electronic component whose characteristics can be changed without directly contacting and sliding an electrode with a magnetic substance, a dielectric substance, a conductor or the like.

According to a second aspect of the present invention, a variable capacitance type capacitor is used in the non-contact regulator, and the variable capacitance is used .
Of the oscillator circuit by changing the capacitance of the capacitor
The present invention provides a solenoid drive circuit characterized by changing an oscillation frequency .

[0014] Next, an invention according to claim 3, by changing the oscillation frequency of the oscillation circuit, a rectifying peak values an oscillation output of the oscillation circuit, the DC component of the output of the oscillation circuit
This reference voltage consisting of
The present invention provides a solenoid drive circuit characterized by outputting a voltage .

Furthermore, the invention according to claim 4, the voltage applied to the solenoid, the output voltage of <br/> buck chopper regulator constituting the power conversion circuit, the output voltage before Kimoto quasi A solenoid drive circuit characterized by being compared with a voltage and having an arbitrary value.

[0016]

The capacitance of the capacitor can be changed by changing the amount of the dielectric material having a high dielectric constant between the electrodes. Further, the value of the inductance of the coil can be changed by changing the amount of the magnetic material having high magnetic permeability in the magnetic path of the coil.

That is, since the electrodes of the variable capacitance type capacitor and the variable inductance type coil can be formed without contact, there is no damage due to wear.

Therefore, by varying the electric power applied to the solenoid by using the variable capacitance type capacitor or the variable inductance type coil and controlling the magnetic field generated in the solenoid, the magnetic field generated in the solenoid can be controlled for a long period of time. .

That is, in a device such as an electric pachinko machine, a solenoid drive circuit is provided which enables a stable magnetic field to be generated even if a large number of operations are performed for a long time and the magnetic field applied to the solenoid is continuously changed. can do.

[0020]

Embodiments of the present invention will be described in more detail with reference to the drawings.

There are various uses of the solenoid drive circuit,
Here, a ball striking solenoid drive circuit of an electric pachinko machine is given as an example.

FIG. 1 shows a block diagram of an embodiment of a circuit for controlling electric power applied to a solenoid by using a variable capacitance type capacitor or a variable inductance type coil.

Power is supplied from the power supply unit 1 to the power conversion circuit 2 and DC power is supplied to the solenoid 3 to strike the ball. The solenoid drive circuit according to the present invention detects the voltage of the solenoid 3 so that the ball striking force can be freely and stably controlled by the pachinko player, and the player can arbitrarily change the capacitance variable capacitor. 9, or a feedback circuit section for freely changing the reference voltage by the variable inductance coil 8 and the reference voltage generating circuit 7, comparing with the detection voltage of the solenoid, passing through the control circuit 5, and feeding back to the power conversion circuit 2. 4 is provided.

When the variable capacitance type capacitor 9 is used, aa ″ is connected, and when the variable inductance type coil 8 is used, aa ′ is connected.

The power conversion circuit 2 varies the output power according to the fed back signal, and as a result, the magnetic field generated in the solenoid changes, so that the pachinko machine can obtain the hitting force of the ball required by the player.

Next, an embodiment using a variable capacitance type capacitor is shown in FIG.

A power conversion circuit 2 is connected to the power supply unit 1 so as to supply DC power to the solenoid 3, and the power conversion circuit 2 employs a step-down chopper regulator.

The switching element of the step-down chopper regulator is controlled by the comparator 6 of the feedback circuit section 4 to control the electric power supplied to the solenoid 3 by changing the duty factor of the switching element.

The comparator 6 detects the power supplied to the solenoid 3 as a voltage and compares it with a voltage that can be arbitrarily generated by a reference voltage generation circuit to control the switching element. Therefore, if the reference voltage is fixed, input fluctuations, etc. It is possible to stabilize the fluctuation of the power supply to the solenoid caused by the factor of.

The reference voltage generating circuit 7 includes a NAND gate 1
It is composed of an oscillating circuit consisting of 0, a variable resistor and a variable capacitor 9 and a peak value rectifying circuit. Variable capacitance type By varying the capacitance of the capacitor 9, the oscillation frequency of the oscillation circuit changes, and by rectifying the peak value, an arbitrary reference voltage is generated.

FIG. 4 shows voltage waveforms of portions indicated by A, B and C in the circuit diagram. (A) is a case where the oscillation frequency is high and (b) is a case where the oscillation frequency is low.

A voltage oscillated with a waveform like A becomes a waveform shown by B by an integrating circuit and is rectified to generate a direct current as shown by C, and this voltage is input to the comparator 6 as a reference voltage. As can be seen from C in (a) and (b), the reference voltage changes as the oscillation frequency changes. By changing the capacitance of the variable capacitance type capacitor 9 , the frequency of the oscillation circuit can be varied and the reference voltage can be set arbitrarily. Therefore, the capacitance change of the variable capacitance type capacitor 9 can be changed. This is equivalent to the control of the switching element in 1 above, and the electric power supplied to the solenoid 3 can be adjusted.

Further, FIG. 3 shows an embodiment using a variable inductance type coil.

The power conversion circuit 2 is connected to the power supply unit 1 so as to supply DC power to the solenoid 3, and the power conversion circuit 2 employs a step-down chopper regulator, which is the same as the above-mentioned embodiment. Yes, comparator 6
It is also the same as the above embodiment in that the reference voltage and the voltage of the solenoid 3 are compared using. Therefore, if the reference voltage can be set arbitrarily, it becomes possible to supply the same stable and arbitrary power to the solenoid 3 as in the above embodiment.

In the Colpitts oscillator circuit 10a for oscillating a reference signal, which comprises a NAND gate, a resistor, a capacitor and a coil, the oscillation frequency f1 is determined by the inductance of the coil and the capacitance value of the capacitor.

[0036] Similarly, since the NAND gate, the resistance, the oscillation frequency f2 by the capacitor and an inductance variable coil 8 any signal oscillating graphics constructed from Rupittsu oscillator 10b also inductance and capacitance of the capacitor of the coil is determined, Since the inductance can be changed arbitrarily, the oscillation frequency can be set arbitrarily.

Next, the reference signal a signal with said given signal oscillation co Rupittsu oscillation circuit 10b from the oscillating Colpitts oscillation circuit 10a receives NAND gates, the frequency of the signal from the reference signal oscillator for Colpitts oscillation circuit 10a f1 frequency signal of the sum of the frequency f2 of the signal from any signal oscillation co Rupittsu oscillator circuit 10b | f1 + f2 | other is a reference signal oscillation Colpitts oscillation circuit of a signal from 10a frequencies f1 and any signal oscillation co Rupittsu oscillator circuit Frequency signal | f1-f2 | of the difference from the frequency f2 of the signal from 10b
A signal containing is obtained.

By passing this signal through a low-pass filter, the | f1 + f2 | signal is cut, and the frequency f1 of the signal from the Colpitts oscillator circuit 10a for reference signal oscillation is cut.
A frequency signal of the difference between the frequency f2 of the signal from any signal oscillation co Rupittsu oscillator circuit 10b | f1 over f2 | After a, NAND gate, the resistance is converted into a square wave by a waveform shaping circuit consisting of a capacitor | A square wave signal of f1-f2 | can be obtained.

[0039] That is, the frequency f2 of the frequency f1 of the signal from the reference signal oscillator for Colpitts oscillation circuit 10a is fixed signal from any signal oscillation co Rupittsu oscillation circuit 10b from the waveform shaping circuit so varied arbitrarily be Of the output | f1−f2 | of the square wave signal has an arbitrary frequency.

The voltage waveforms indicated by A, B, and C in this circuit diagram are also those shown in FIG. 4, where (a) is a high frequency and (b) is a low oscillation frequency.

A voltage oscillated with a waveform like A becomes a waveform shown by B by an integrating circuit and is rectified to generate a direct current as shown by C, and this voltage is input to the comparator 6 as a reference voltage. As can be seen from C in (a) and (b), the reference voltage changes as the oscillation frequency changes. Since the frequency of the oscillation circuit can be varied and the reference voltage can be set arbitrarily by changing the capacitance of the variable capacitance type capacitor, the capacitance change of the variable capacitance type capacitor controls the switching element in the power conversion circuit 2. This is equivalent to that, and the electric power supplied to the solenoid can be adjusted.

Since the circuit described above has been described as a driving circuit for a ball striking solenoid of an electric pachinko machine, a transistor is connected in series with a solenoid serving as a load to perform switching operation.
That is, since the generated magnetic field is changed linearly, it is possible to eliminate this switching transistor.

[0043]

As described above, it is possible to provide a solenoid drive circuit for stably applying an arbitrary and constant magnetic field to a solenoid over a long period of time.

[Brief description of drawings]

FIG. 1 is a block diagram of an embodiment of a circuit that controls electric power applied to a solenoid using a variable capacitance type capacitor or a variable inductance type coil.

FIG. 2 is an embodiment using a variable capacitance type capacitor.

FIG. 3 Example using variable inductance coil

FIG. 4 is a voltage waveform in the circuit diagram.

FIG. 5 is a block diagram of a conventional pachinko machine ball striking solenoid drive circuit.

[Explanation of symbols]

1 Power supply section 2 Power conversion circuit 3 solenoid 4 Feedback circuit section 5 control circuit 6 comparator 7 Reference voltage generation circuit 8 Variable inductance coil 9 Variable capacitance type capacitors 10 NAND gate 11 variable resistance 12 Reference voltage power supply

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-7-69124 (JP, A) JP-A-63-55917 (JP, A) JP-A-53-149428 (JP, A) JP-A-59- 117462 (JP, A) Actual opening Sho 58-51410 (JP, U) Actual opening Sho 62-70568 (JP, U) Actual opening Flat 4-103188 (JP, U) Ono Isamu, Chapter 6 Manufacturing method, capacitor utilization manual, Japan, Tokyo Denki University Press, May 20, 1976, 1st edition, pp. 177 to 181 (58) Fields investigated (Int.Cl. ⁷ , DB name) H01F 7/18 G05F 1/56 310 A63F 7/02 G05B 1/00 H02P 7/00

Claims (4)

(57) [Claims] 1. A non-contact adjuster is used in a solenoid drive circuit for controlling a ball striking force in a pachinko machine by arbitrarily changing a magnetic field generated by the solenoid by changing a voltage applied to a solenoid of a power conversion circuit. And the DC component of the output of the oscillator circuit
Is used as the reference voltage, and is generated by adjusting this non-contact regulator.
By varying the oscillation frequency of the oscillation circuit, the reference voltage is set arbitrarily, the voltage applied to the solenoid of the power conversion circuit and the reference
Compare with voltage and feed back to the power conversion circuit
It outputs a signal and responds to this feedback signal by
A solenoid drive circuit , wherein a voltage applied to the solenoid of the force conversion circuit is changed. 2. A variable capacitance type capacitor is used for the non-contact regulator, and the capacitance of the variable capacitance type capacitor is changed.
The solenoid drive circuit according to claim 1 , wherein the oscillation frequency of the oscillation circuit is changed . Wherein varying the oscillation frequency of the oscillation circuit, a rectifying peak values an oscillation output of the oscillation circuit, the oscillation
When obtaining the reference voltage consisting of the DC component of the output of the circuit,
3. The solenoid drive circuit according to claim 2 , wherein the reference voltage is output after being changed to the above. 4. The voltage applied to the solenoid is the electric power.
The output voltage of the step-down chopper regulator constituting the converter circuit, according to claim 1 to claim 3, characterized in that the output voltage is set to any value is compared with the previous Kimoto reference voltage
The solenoid drive circuit described.