JP5428033B2 - Drive circuit for rotary solenoid of game machine and drive method thereof - Google Patents

Description

  The present invention relates to a drive circuit for a rotary solenoid of a gaming machine and a driving method thereof for driving a ball cage for launching a game ball by a rotary solenoid.

  In pachinko machines and the like, as disclosed in Patent Document 1, it is known to use a rotary solenoid as a driving device for a ball cage. As a rotary solenoid, there is a bipolar type as disclosed in Patent Document 2, for example. This rotary solenoid is composed of a rotor mounted on a rotating shaft, a yoke formed with a pair of stator portions facing each other with the tip approaching the rotor, and a coil wound around the yoke. A ball cage is attached to the rotating shaft.

  FIG. 6 shows a drive circuit for driving the rotary solenoid. This circuit is a constant current circuit, and controls the launch intensity of the sphere by changing the control input voltage from the launch intensity controller (not shown), and from the launch interval controller (not shown). By performing output on / off control according to a command, the firing interval is controlled so that the number of balls fired per minute is less than 100.

  In this conventional form, the rotor is rotated from the standby position in one stator part, and the bullet ball shoots a ball. FIG. 7 is a current waveform at the time of driving, and FIG. 8 is a diagram for explaining the rotation of the bullet ball cage. When the rotor moves forward, the rotary solenoid is energized to rotate the bullet ball cage to the hitting position to move the ball. Fire. After the completion of firing, when energization is stopped, the magnetic force of the rotor reaches the stator portion at the standby position, so that it can automatically return to the original position.

In addition to returning to the standby position by the magnetic force, it is possible to return to the standby position by reversing the energizing direction forward and backward. An H bridge circuit as shown in FIG. 9 is known as a circuit for reversing the energization direction. FIG. 10 is a waveform diagram of the emission current in this circuit. In the circuit of FIG. 9, the first switching element S1 and the second switching element of the circuit in which one end 1 of the rotary solenoid CN1 is grounded from the power source through the first switching element S1 and the second switching element S3. The third switching element S3 and the fourth switching element are connected between S2 and the other end 2 of the rotary solenoid CN1 is grounded from the power source through the third switching element S3 and the fourth switching element S4. Are connected between the switching elements S4.

In this circuit, when the switching elements S1 and S4 are turned on and S2 and S3 are turned off and energized, current can flow in the positive direction from one end 1 to the other end 2 of the rotary solenoid CN1, Rotate to a position and fire a sphere. Then, by turning on the switching elements S3 and S2 and turning off S1 and S4, the current can flow in the opposite direction from the other end 2 of the rotary solenoid CN1 to the one end 1, thereby reversing the polarity of the stator portion. It is possible to return the ball cage to the standby position.

However, in the circuit as described above, the magnitudes of the forward current and the backward current are the same as shown in FIG. (FIG. 10), there is a disadvantage that power consumption is large and wasteful. It is also conceivable to save current consumption by energizing the rotor for the time required to return the rotor from the ball hitting position to the return position, and then cut the current, but a control mechanism for changing the energization time during forward movement and backward movement However, there is a problem that the circuit becomes complicated and the cost is increased.

In order to fly a sphere far away using a rotary solenoid, there are methods of (1) increasing the current flowing through the rotary solenoid and (2) using a rotary solenoid having a large torque. However, in (1), a large power source is required, and in (2), the rotary solenoid is disadvantageously enlarged.

JP 2002-159649 A Japanese Patent Laid-Open No. 9-154267

In view of the conventional problems described above, it provides a simple structure that can be returned to the original standby position pinball hammer small Sai current and rotary gaming machine that can fly farther spheres It is an object to provide a drive circuit for a solenoid.

Drive circuit of the rotary solenoid of the gaming machine according to the present invention has been made in order to solve the aforementioned problem, a forward circuit for rotating the rotor of the rotary solenoid to the standby position or al hitting ball position, is rotated and the backward circuit to return to the hitting position or we wait position of the rotor, the drive circuit of the rotary solenoid to form, the forward movement circuit rotates the rotor from the standby position to the hitting position beyond the return limit position The backward movement circuit is characterized in that the current when the rotor is moved backward is reduced and energized to move the rotor rotated to the hitting position back to at least the return limit position. is there.

  In the above-described invention, one end of the rotary solenoid is connected between the first and second switching elements of the circuit that is grounded from the power source through the first and second switching elements, and the other end of the rotary solenoid is connected. Is connected between the third and fourth switching elements of a circuit that is grounded from the power source through the third and fourth switching elements to form a forward movement circuit and a backward movement circuit of a rotary solenoid. In addition, it is possible to reduce the current when the rotor moves backward by arranging a resistor in the backward movement circuit between the one end of the rotary solenoid and the ground.

  Further, one end of the rotary solenoid is connected between the power source and the first switching element of a circuit that is grounded from the power source through the first switching element, and the other end of the rotary solenoid is connected to the second switching element. In addition to being connected to the power source via the element, a grounding circuit grounded via the third switching element is connected between the second switching element and the other end of the rotary solenoid so that the forward movement circuit and the recovery circuit of the rotary solenoid are restored. In addition to forming a dynamic circuit, a resistor can be disposed in the reverse circuit between the power source and the other end of the rotary solenoid to reduce the current when the rotor moves backward.

Further, the rotary solenoid driving method of the gaming machine of the present invention uses any one of the rotary solenoid drive circuits described above, and turns the rotor rotated to the ball hitting position by energizing the forward movement circuit into the backward movement circuit. After energizing for the same time as the forward movement time and returning to at least the return limit position, the energization is cut off and returned to the standby position by the magnetic force of the rotor.
The above-described present invention is not applicable to an automatic return type solenoid using a return spring.

Drive circuit of the rotary solenoid of the gaming machine of the present invention, since the reduced current when the rotor backward, it is possible to reduce the power consumption required for the rotor backward. Further, since the rotor rotates beyond the return limit position to the hitting ball position, it is possible to increase the rotation stroke of the ball ball cage and to fly the ball far away.

  Further, the method of driving the rotary solenoid of the gaming machine according to the present invention reduces the torque related to the rotating shaft by reducing the current, and energizes the rotor for the same time as when the rotor moves forward to move the rotor at least to the return limit position. Since the energization is stopped after returning to the initial position, there is a great advantage that the rotor can be returned to the original standby position by simplifying the structure and reducing power consumption.

FIG. 3 is a circuit diagram of a drive circuit according to the first embodiment. FIG. 2 is a current waveform diagram in the drive circuit of FIG. 1. It is explanatory drawing of the motion of a ball cage in the drive circuit of FIG. FIG. 6 is a circuit diagram of a drive circuit according to a second embodiment. FIG. 5 is a circuit diagram of an improved drive circuit according to a second embodiment. It is a circuit diagram of the conventional drive circuit. FIG. 7 is a current waveform diagram in the drive circuit of FIG. 6. It is explanatory drawing of a motion of the ball cage in the drive circuit of FIG. It is a circuit diagram of the conventional drive circuit. FIG. 10 is a current waveform diagram in the drive circuit of FIG. 9.

Hereinafter, embodiments of the present invention will be described.
FIG. 1 is a diagram showing a drive circuit for a rotary solenoid of a gaming machine according to the first embodiment, FIG. 2 is a waveform diagram of a firing current in this circuit, and FIG. 3 is a diagram for explaining the movement of a kite in this circuit. is there. In the circuit of FIG. 1, one end 1 of the rotary solenoid CN1 is connected between the switching elements S1 and S2 of the circuit that is grounded from the power source through the transistor TR1, the first switching element S1, the second switching element S2, and the resistor R1. The other end 2 of the rotary solenoid CN1 is connected between the switching elements S3 and S4 of the circuit that is grounded from the power source through the third switching element S3 and the fourth switching element S4. There is no difference from the conventional one shown in FIG.

  In this circuit, the tip of a firing interval control unit (not shown) for controlling output on / off is connected to a firing pulse generation circuit, and a variable resistor of a firing handle (not shown) is connected to the input terminal of the operational amplifier. The transistor TR1, the rotary solenoid CN1, and the resistors R1 and R2 are connected to the output terminal of the operational amplifier to form a constant voltage circuit. A pulse having a period of about 600 ms is generated from the firing pulse generation circuit, and the output of the transistor TR1 is controlled by the transistor TR2.

  In the above circuit, when the switching elements S1 and S4 are turned on and S2 and S3 are turned off at the time of hitting, the transistor TR1 is controlled by turning on and off the transistor TR2, and the forward current from the power source is applied to one end 1 of the rotary solenoid CN1. Therefore, the ball can be fired by rotating the rotary solenoid CN1 from the standby position to the hitting position beyond the return limit.

  At the time of reverse movement, the switching elements S1 and S4 are turned off and S2 and S3 are turned on, so that the backward movement current can flow from the other end 2 of the rotary solenoid CN1 to the opposite direction of the one end 1, thereby Return to the position exceeding the return limit position. Here, since the resistor R2 is disposed in the return circuit between the one end 1 of the rotary solenoid CN1 and the connection point P1 of the return circuit and the forward circuit, the current flowing through the return circuit is controlled to be small. (FIG. 6). As a result, the torque from the rotor applied to the rotating shaft is reduced, so that the rotor is reversed slowly.

  The energization time for the backward movement circuit is the same as the energization time for the forward movement circuit, but it is necessary to return the rotor to at least the return limit position within the energization time. This is because if the return limit is not exceeded and the energization is interrupted, the rotor returns to the hit ball position. There is no problem even if the return limit position is slightly exceeded. When the rotor returns to the return limit position or a position slightly beyond this, the current is cut off by turning off the switching elements S1, S2, or S3, S4. After the interruption, the rotor is attracted to the stator portion on the standby position side by the magnetic force of the rotor, so that the rotor, that is, the ball cage can be returned to the standby position. The ball spear waits at this position for a time to secure the interval between ball launches, and then moves forward again for the next ball launch.

  FIG. 4 is a diagram illustrating a drive circuit for a rotary solenoid of the gaming machine according to the second embodiment. In this embodiment, one end 1 of the rotary solenoid CN1 is connected between the power supply and the first switching element S1 in a circuit that is grounded from the power supply through the first switching element S1, and in addition to the rotary solenoid. An end 2 is connected to the power source via the second switching element S2, and a ground circuit is connected between the second switching element S2 and the other end 2 of the rotary solenoid CN1 via the third switching element S3. Connected. In the circuit where the power supply is connected to the other end 2 of the rotary solenoid CN1 via the switching element S2, a resistor R4 is arranged in the return circuit on the power supply side from the connection point P2 with the ground circuit.

  In the above circuit, when the switching elements S1 and S2 are turned off and S3 is turned on at the time of hitting the ball, the forward current from the power source flows in the positive direction from one end 1 to the other end 2 of the rotary solenoid. be able to.

  At the time of reverse operation, switching elements S2 and S1 are turned on and S3 is turned off to allow a reverse current to flow in the reverse direction from the other end 2 to one end 1 of the rotary solenoid CN1, thereby limiting the return limit of the rotor. Move back to a position that exceeds the position. Since the resistor R4 is arranged in the return circuit, the value of the current flowing through the return circuit can be kept small.

  In the second embodiment, the emission current waveform and the movement of the kite are the same as those shown in FIGS.

  As the switching element, an electrical switch such as a transistor, FET, or photo MOS relay can be used. In the first embodiment, the forward circuit requires two switching elements S1 and S4. However, in the second embodiment, the switching element may be one of S3. There is an advantage that there is little.

  The thing of 2nd Embodiment can be made into the improved type as shown in FIG. That is, it is possible to increase the power efficiency by disposing the resistor R5 between the input terminal and the output terminal of the operational amplifier and providing a chopping circuit with the hysteresis comparator to intermittently set the voltage related to the rotary solenoid. Further, a diode D is provided so that a regenerative current flows when the voltage is turned off during chopping. In this embodiment, since the switching loss is reduced by using a P-channel FET having a low resistance when the power is turned on instead of the transistor TR1, the transistor TR3 is added to invert the phase.

  CN1 Rotary solenoid, TR1, TR2, TR3 Transistor, S1, S2, S3, S4 Switching element, R1, R2, R3, R4, R5 Resistance

Claims (4)

Rotary solenoid forming a forward circuit for rotating the rotor of the rotary solenoid to the standby position or al hitting ball position, and backward movement circuit for returning the rotation is a rotor in hitting position or we wait position, the In the driving circuit, the forward movement circuit rotates the rotor from the standby position to the hitting position beyond the return limit position, and the backward movement circuit reduces the current when the rotor moves backward, A drive circuit for a rotary solenoid of a gaming machine, wherein the rotor rotated to a position is moved back to at least a return limit position. One end of the rotary solenoid is connected between the first and second switching elements of the circuit grounded from the power source through the first and second switching elements, and the other end of the rotary solenoid is connected to the first from the power source. Connected between the third and fourth switching elements of a circuit grounded via the third and fourth switching elements,
In addition to forming the rotary solenoid forward and reverse circuits,
2. The drive circuit for a rotary solenoid of a gaming machine according to claim 1, wherein a resistor is disposed in a return circuit between the one end of the rotary solenoid and the ground to reduce a current when the rotor is returned. After connecting one end of the rotary solenoid between the power source and the first switching element of a circuit grounded from the power source through the first switching element,
The other end of the rotary solenoid is connected to the power source via the second switching element, and a ground circuit grounded via the third switching element is connected between the second switching element and the other end of the rotary solenoid. And
In addition to forming the rotary solenoid forward and reverse circuits,
2. The drive circuit for a rotary solenoid of a gaming machine according to claim 1, wherein a resistor is disposed in a return circuit between the power source and the other end of the rotary solenoid to reduce a current when the rotor is returned.   Using the rotary solenoid drive circuit according to any one of claims 1 to 3, the rotor rotated to the hitting position by energizing the forward movement circuit is energized to the backward movement circuit for the same time as the forward movement time. A method for driving a rotary solenoid of a gaming machine, wherein at least a return is made to a return limit position, and then energization is interrupted to return to a standby position by the magnetic force of the rotor.

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