JP2007125158A - Control circuit for game ball launcher and game machine - Google Patents

Abstract

[PROBLEMS] To reduce the size and cost of a launch structure by constructing a control circuit capable of suppressing a holding torque so as to ensure a sufficient hitting force of a game ball even with a spring having a weak restoring force. It is an object of the present invention to provide a control circuit for a game ball launching apparatus and a game machine that can perform the above.
A game ball launching apparatus for launching a game ball, comprising a capacitor connected in parallel with a power source of the launch drive motor, and the launch drive motor generated when the output of the launch drive motor is cut off A game in which a diode that restricts the flow of current based on the back electromotive force is interposed between wirings connecting the power source of the firing drive motor and the stator winding of the launch drive motor after the capacitor. The control circuit of the ball launcher is configured.
[Selection] Figure 8

Description

  The present invention relates to a control circuit for a game ball launching device provided in a ball game machine such as a pachinko game machine or a smart ball game machine, and more specifically, a control circuit for increasing the launching power (hitting power) of a game ball most efficiently. The present invention relates to a control circuit of a constructed game ball launcher and a game machine.

  In general, a bullet ball game machine is provided with a launching device that launches a game ball onto a game board surface. This launching device is installed in the lower part of the back of the game board. Here, a launching method is proposed in which a game ball is fired by electrically controlling the output of a pulse motor (see, for example, Patent Document 1).

  The launching device employed in this launching system is such that a hitting ball for hitting (striking) a game ball is pivotally attached to an output shaft of a pulse motor, and a spring spring wound around the outer periphery of the output shaft. One end is locked to the hitting ball and the other end is locked to the base to give the hitting ball a biasing force in the rotation direction. And the output of the said pulse motor is adjusted in the direction which raises the urging | biasing force of a mainspring spring according to the amount of rotations when a player rotates the discharge handle. In this case, when the output of the pulse motor is turned off, the mainspring is vigorously restored when the so-called excitation is released. At this time, the hitting ball is a hitting device for a pachinko machine that rotates strongly or weakly with a turning force proportional to the restoring force to launch a game ball.

  As a control circuit used in the hitting ball launcher of the pachinko machine, a motor drive circuit 121 as shown in FIG. 12 is generally used. In addition, in order to stabilize the power supply 122 in the input circuit, a large-capacitance capacitor 124 is provided between the power supply 122 and the GND 123. In this motor drive circuit 121, a diode 126 connected in parallel to the coil winding 125 of the pulse motor is provided as a protection element so that an excessive voltage is not applied to the transistor 127 when the transistor 127 is turned off. . Further, the resistor 128 improves current interruption, and the resistance 128 is cut faster as the value is larger.

  By the way, when the rotor excitation of the pulse motor is released, the spring is released from the rotational force in the direction of increasing the urging force of the spring, and the spring is restored. Due to the strong urging force at the time of restoration, the output shaft of the pulse motor rotates vigorously in the striking direction integrally with the hitting ball. At this time, the rotation of the output shaft of the pulse motor reverses the pulse motor. An electromotive force (power generation) occurs.

  However, this generated current flows on the motor drive circuit 121 on the motor drive circuit 121 such as a pulse motor → capacitor and a pulse motor → diode → power supply, and is opposite to the rotation direction of the output shaft of the pulse motor. A so-called holding torque is generated in which a rotational resistance is applied in the rotational direction. Due to the generation of the holding torque, the restoring force of the mainspring is weakened, and the striking force based on the initially set rotational driving force cannot be transmitted to the striking ball. Therefore, in order to obtain the initially set rotational driving force, a spring having a stronger restoring force must be used. For this reason, a spring spring having a strong restoring force and a pulse motor having a large torque are required, resulting in an increase in size of the launching device and an increase in cost.

Japanese Patent Publication No. 7-87873

  In view of this, the present invention provides a game ball launching apparatus capable of launching a game ball sufficiently strongly even with a spring having a weak restoring force by constructing a control circuit capable of suppressing a holding torque that becomes a rotational resistance of a motor output shaft. It is an object of the present invention to provide a gaming machine capable of reducing the size and cost of a game ball launching device.

  The present invention provides a firing drive motor that is driven based on an operation of a launching handle that is attached to the front of a game table with rotation permitted, and the amount of rotation of the kite according to the drive amount of the launch drive motor. A spring that converts the urging force in a moving direction and transmits the urging force of the heel to the heel, and when the output of the firing drive motor that outputs the urging force of the spring in a direction that increases the urging force is turned off, the urging force of the spring A launching device for transmitting a striking force according to the amount of rotation of the launching handle to the kite to launch a game ball, comprising a capacitor connected in parallel with the power source of the launch drive motor, A diode that restricts the flow of current based on the counter electromotive force generated from the firing drive motor that is generated when the output of the drive motor is cut off is provided after the capacitor and the power source of the launch drive motor and the launch drive motor. Characterized in that it is a control circuit of the game ball launcher comprising interposed between the wiring portion connecting between the stator windings.

  As an aspect of the present invention, a motor drive circuit protection element can be provided after the diode.

  As an aspect of the present invention, the motor drive circuit protection element can be configured by using a small-capacitance capacitor having a small capacity, and inserting the small-capacitance capacitor in parallel with the stator winding of the firing drive motor. .

  If the control circuit of the gaming ball launching device thus configured is incorporated in a gaming machine, the gaming ball launching device can be reduced in size and cost.

  According to the present invention, when the output of the firing drive motor that increases the biasing force of the spring is cut off, the holding torque that prevents the rotation of the output shaft of the firing drive motor that rotates together with the rod that rotates in the biasing direction of the spring is prevented. Since generation | occurrence | production can be suppressed, even if it uses a spring with weak restoring force, the strong rotational driving force required for the launch of a game ball can fully be output. Therefore, it is possible to reduce the size and cost of the game ball launcher.

An embodiment of the present invention will be described below with reference to the drawings.
The drawing shows a case where a pachinko game machine is used as an example of a ball game machine. FIG. 1 shows the front side of a gaming table 11 of a pachinko gaming machine, which has a gaming surface 12 on the upper side and a game ball (hereinafter referred to as a ball) stored in the lower side for launch. A plate 13 and a lower plate 14 to be stored for payout are arranged up and down. Further, a ball launching handle 15 for adjusting the ball striking force by the player's turning operation is provided on the lower right side of the game table 11, and will be described later in accordance with the turning amount of the launching handle 15. The balls are fired one by one from the launching device on the back side of the board surface, and the fired balls are supplied to the game surface 12 along the transport rail 12a and the game is started.

  FIG. 2 shows the back side of the game table 11. On the back side of the game table 11, there is a storage tank 16 for storing balls at the top, an alignment passage 17 for aligning and flowing the balls from the storage tank 16, and A ball dispensing device 18 for dispensing balls from the alignment passage 17 to the upper plate 13 is disposed, and a substrate portion 19 having a large display device, a control unit, and the like is disposed at the center on the back side of the panel surface.

  Furthermore, a launching device 20 is provided in the lower part on the back side of the board surface. The launching device 20 is provided to flow and supply the balls stored in the upper plate 13 toward the game surface 12 while adjusting the hitting force. Has been.

Next, an overall external view of the launching device 20 is shown in FIGS. 3 and 4, an exploded view thereof is shown in FIG. 5, and a cross-sectional structure of a main part will be described with reference to FIG. 6.
The launching device 20 includes a firing drive motor M, a driving force transmission unit 21, a hitting unit 22, a ball supply unit 23, a launch intensity adjusting unit 24, a reference position detection sensor S, a circuit unit 25, and these And a fixing plate 26 for fixing the.

  The firing drive motor M is a stepping motor that can obtain a precise rotational output, and is installed by screwing the firing drive motor M to a flat fixed plate 26 that is vertically attached to the back side of the board surface of the game table 11. is doing.

  The driving force transmission unit 21 is directly connected to the main shaft (output shaft) 27 of the firing drive motor M and is integrally connected to the main shaft 27 so as to freely rotate forward and backward. A rotating fan-shaped drive gear G1 is provided coaxially and integrally. Based on the output of the firing drive motor M, the rod 28 and the drive gear G1 rotate together.

  The striking portion 22 is provided with a collar 28 as a striking member, and the main shaft 27 pivotally attached to the base end portion of the collar 28 is rotated about a rotation fulcrum. A ball waiting at position 29 is hit.

  When the output of the firing drive motor M is cut off, the spear 28 is turned on standby at a position on a rotational trajectory away from the ball launch position 29 for hitting the ball. In response to a biasing force of an adjusting spring 35 that adjusts the striking force, which will be described later, the collar 28 rotates vigorously in a semicircular shape. Then, the intermediate portion of the collar 28 comes into contact with the collar stopper 30 fixed to the fixing plate 26, and the rotation of the collar 28 is stopped. At this time, the tip 28a collides with the ball that has been waiting at the ball launch position 29 of the ball supply unit 23, and the ball is launched with that power.

  The sphere supply unit 23 guides the sphere supplied from the upper plate 13 to the sphere launch position 29 and guides the sphere flowing down from the sphere feed passage to the launch rail 31 and the launch guide member 32. In such a configuration, the balls are rolled one by one while being supplied to the ball launch position 29 where the balls are launched obliquely upward.

  The firing strength adjusting unit 24 includes a shaft 33, a fixed spring cover 34, a firing strength adjusting spring (hereinafter referred to as an adjusting spring) 35, and a movable spring cover 36.

  One end of the shaft 33 is screwed to a vertical fixing plate 26 so that the axial direction of the shaft 33 is fixed horizontally, and a shaft support hole 34a of a cylindrical fixed spring cover 34 is inserted through the shaft 33. A fixed spring cover 34 is attached. A shaft support hole 36 a of a cylindrical movable spring cover 36 is inserted into the other end side of the shaft 33 fixed to the fixed plate 26, and is screwed in the axial direction from both end surfaces of the shaft 33, so that both spring covers 34 , 36 are connected to each other.

  The fixed spring cover 34 is provided by closing one end surface of the cylindrical body and opening the other end surface, and is provided by penetrating a shaft support hole 34a through which the shaft 33 is inserted in the center of the cylindrical body. With the shaft support hole 34 a of the fixed spring cover 34 inserted through the shaft 33, the closed end face side of the fixed spring cover 34 is made to correspond to the fixed plate 26 in a plane. In a state corresponding to this plane, one end of the shaft 33 is screwed from the outside of the fixing plate 26 and the fixing spring cover 34 is attached to the fixing plate 26.

  On the other hand, on the open end face side, an annular spring accommodating portion 34b is formed on the concentric circle of the shaft support hole 34a so that the annular end portion on one side of the coil-shaped adjusting spring 35 is also accommodated and held as a spring seat. ing. Further, in the circumferential direction on the outer peripheral surface of the fixed spring cover 34, a spring adjusting groove 34c for locking one end portion of an adjusting spring 35 to be described later, and at least one point in the circumferential direction are screwed to the fixing plate 26 to prevent rotation. A stop fixing portion 34d is formed.

  The adjustment spring 35 is a coil spring, and is housed and held between two cylindrical body portions of a fixed spring cover 34 and a corresponding movable spring cover 36 of the same cylindrical body. One end portion of the adjustment spring 35 is fixed to the fixed spring cover 34. The other end is locked to a spring locking groove 36c of a rotatable movable spring cover 36 described later. As described above, the adjustment spring 35 is interposed between the spring adjustment groove 34c and the spring locking groove 36c in accordance with the rotation of the movable spring cover 36, which will be described later, so that the adjustment of the urging force strength (degree of twisting of the coil spring) is possible. .

  The above-mentioned movable spring cover 36 is provided by closing one end surface of the cylindrical body and opening the other end surface, and is provided by penetrating a shaft support hole 36a through which the shaft 33 is inserted. Then, the shaft support hole 36a of the movable spring cover 36 is inserted through the shaft 33, and the other end of the shaft 33 inserted between the shaft support holes 34a, 36a of both spring covers is screwed to fix the movable spring cover 36. It is secured to the plate 26 by being removed.

  In this case, when the movable spring cover 36 is rotated on the shaft 33 in response to a rotation transmission force from a drive gear G1 described later, the movable spring cover 36 is rotated around the shaft 33 so that the movable spring cover 36 can smoothly rotate on the shaft 33. Only the end face is brought into contact with the fixed spring cover 34 side.

  On the open end face side, an annular spring accommodating portion 36b is formed on the concentric circle of the shaft support hole 36a to accommodate and hold the other annular end portion of the coiled adjustment spring 35 also as a spring seat. is doing. Further, on the outer peripheral surface of the movable spring cover 36, a spring locking groove 36c that locks one end of the adjustment spring 35 and a driven gear G2 that is formed close to a half circumference meshing with the drive gear G1 and transmitting power. And a detection piece 36d for causing a reference position detection sensor S described later to detect that the movable spring cover 36 has rotated to the rotation reference position.

  The driven gear G2 is integrally formed on the outer peripheral surface of the movable spring cover 36 with the number of gear teeth corresponding to the maximum amount of rotation of the flange 28, and is directly connected to the main shaft 27 of the firing drive motor M to rotate. Is engaged. Therefore, power is transmitted from the drive gear G1 to the driven gear G2, and the movable spring cover 36 that is allowed to rotate integrally with the driven gear G2 rotates. At this time, one end of the adjustment spring 35 is twisted in the direction of increasing the urging force with the rotation of the movable spring cover 36 with the spring adjustment groove 34c of the fixed spring cover 34 as a reference. Then, the strength of the firing strength of the adjustment spring 35 (degree of torsion of the coil spring) is adjusted by the rotation angle of the movable spring cover 36 proportional to the biasing force of the adjustment spring 35 at this time. On the other hand, when the drive of the firing drive motor M is stopped, the rotation restriction in the direction of increasing the urging force is released, and the adjustment spring 35 is restored accordingly, and the rod 28 is vigorously rotated toward the ball launch position 29. Move and hit the ball.

  As the reference position detection sensor S, for example, an optical detection sensor is used, and the detection sensor S is fixed to the fixed plate 26 at a detection position corresponding to the detection piece 36d protruding from a part of the outer peripheral surface of the movable spring cover 36. It is installed. Then, the detection piece 36d is set to a reference position at which the rotation amount control of the firing drive motor M is started when the detection light is changed from the light shielding state to the light transmitting state.

  The circuit unit 25 is mounted on the launch control board 37, is integrated with the mounting plate 38 and is attached to the fixed plate 26, and the mounting surface side of the launch control board 37 is covered with a box-shaped case 39 to protect it. In the case 39, the locking protrusions 39a projecting on both sides on the open surface side are locked to the locking recesses 38a formed on both sides of the mounting plate 38 so that the case 39 is attached to the mounting plate 38. They can be connected together and can be easily attached and detached. In addition, when attaching the above-described various components attached to the fixed plate 26, the screws are attached to the fixed plate 26 using screws that are omitted from the reference numerals.

  With the configuration as described above, it is possible to play a game by adjusting the striking force of the launching device 20 and supplying the balls fired from the launching device 20 one by one along the transport rail 12a to the gaming surface 12.

Next, the rotation state of the ridge 28 of the launching device 20 will be described with reference to the operation explanatory diagrams of FIGS.
FIG. 7A shows a stop state of the launching device 20, and since no launch signal is input to the launch drive motor M and no excitation is applied, the kite 28 is restrained from rotating by the kite stopper 30 and launches a ball. The rotation is stopped at the position 29.

  FIG. 7B shows an initial operation state of the rod 28 of the launching device 20, and the rod 28 integral with the drive gear G1 starts to rotate counterclockwise based on the driving of the firing drive motor M. Based on the rotation of the drive gear G 1, the movable spring cover 36 integrated with the driven gear G 2 rotates clockwise around the shaft 33. At this time, the adjustment spring 35 is twisted in a direction to increase the urging force. At that time, one sphere P flows down from a sphere feed supply mechanism (not shown) and is guided and held at a sphere launch position 29 between the launch rail 31 and the launch guide member 32.

  FIG. 7C shows an energization standby state of the rod 28 of the launching device 20, and the detection piece 36d attached to the movable spring cover 36 rotates to change the detection light of the reference position detection sensor S from light shielding to light transmission. When switched, it is determined that the reference position of the firing handle 15 has been detected, and from that point on, the driving amount of the firing drive motor M is changed in accordance with the rotation of the firing handle 15 by the player. When the driving amount corresponding to the turning operation of the firing handle 15 by the player is driven, the output of the firing drive motor M is subsequently cut off, and the excitation of the firing drive motor M is released based on the release of the excitation of the firing drive motor M. The restoring force works to rotate and return the spear 28 to the ball launch position 29 side.

  FIG. 7 (D) shows a hitting start state of the launching device 20. The launching direction is obliquely upward when the kite 28 vigorously returns and the tip 28 a collides with the ball P waiting at the ball launching position 29. Giving hitting power.

  FIG. 7E shows a state immediately after hitting the launching device 20, and the ball P hit by the spear 28 is supplied to the game surface 12 along the launch rail 31 and the transport rail 12a. Even after this hit, the rod 28 tries to rotate in the striking direction by receiving the restoring force of the adjustment spring 35, but is restricted by the rod stopper 30 and stopped at the ball launch position 29. At this time, the kite 28 is in the same position as the initial stop state of the launching device 20 in FIG. 7A, and repeats the above-described ball launching operation in FIGS.

  FIG. 8 shows a control circuit block diagram of the launching device 20, and the power supply 81 is supplied from a power supply board (not shown) of the pachinko gaming machine. The winning ball payout board 82 controls the winning ball at the ball winning opening on the game surface 12 and outputs a signal for permitting the firing depending on the presence or absence of an error. The firing handle 15 outputs a touch sensor for detecting contact with the human body, a volume for electrically converting the rotation angle of the firing handle 15, and a signal of a launch stop switch for the player to stop firing the ball. .

  Further, the reference position detection sensor S outputs the position of the reference position at which the rotation amount control of the firing drive motor M is started. These output signals are combined to compare the signals from the prize ball payout board 82, the launch handle 15 and the reference position detection sensor S by the comparison control circuit 83 mounted on the launch control board 37, and the oscillation circuit 84 A pulse is generated by a pulse generation circuit 85 that receives the oscillation signal, and a firing drive motor M is driven by a motor drive circuit (motor driver) 86.

  When this firing drive motor M is driven, the movable spring cover 36 is rotated through the driven gear G2 provided on the outer periphery of the cover in the direction of increasing the striking force of the collar 28 based on this drive. The reference position detection sensor S detects a reference position at which the rotation amount control of the firing drive motor M is started. The drive amount of the firing drive motor M is changed according to the rotation angle of the firing handle 15 from the detection start time.

  After driving the firing drive motor M with a drive amount corresponding to the rotation amount of the firing handle 15, the excitation spring M is de-energized so that the adjustment spring 35 is restored by a restoring action based on the biasing force that has been increased so far. The rotational force for impact is transmitted to 28. Thereby, the reed 28 rotates in the striking direction and strikes the ball P.

  By the way, in the launch control board 37, a capacitor 87 is connected in parallel with the power source 81 of the launch drive motor M, and the reverse from the launch drive motor M generated when the output of the launch drive motor M is cut off. A diode 88 that restricts the flow of current based on the electromotive force is connected between the power supply 81 of the firing drive motor M and the stator winding 89 of the firing drive motor M, following the capacitor 87 (on the motor side). It is interposed between the wiring parts.

  A diode 88 for controlling the current is inserted in the subsequent stage of the capacitor 87 to prevent the current from flowing into the capacitor 87 due to the back electromotive force from the firing drive motor M. The other end of the stator winding 89 is controlled by the motor drive circuit 86 with the diode 88 interposed.

  The diode 88 is preferably a diode having the characteristic of reducing the reverse flow of current as much as possible. A Schottky barrier diode, for example, is suitable as the diode having such a characteristic.

  In addition, a capacitor 87 for stabilizing the power supply voltage is provided at the time of input from the power supply 81. At this time, by connecting the capacitor 87 in parallel to the firing drive motor M, the back electromotive force can be reduced. We are aiming for a decrease.

  FIG. 9 shows a first embodiment of the motor drive circuit provided in the circuit section of the launching device 20, and this motor drive circuit is provided in the same manner as the motor drive circuit 86 shown in FIG. A capacitor 93 is connected in parallel on the front stage side between the wiring sections connecting the stator winding 92 of the firing drive motor M and a diode 94 is connected in series on the rear stage side. In the figure, reference numeral 95 denotes a transistor as a drive element.

  Since the current flow based on the back electromotive force from the firing drive motor M generated when the output of the firing drive motor M is cut off can be limited by the diode 94, the drive drive from the power source 91 is performed even if the back electromotive force is generated. The current flowing through the motor M can be suppressed. Therefore, when the back electromotive force is lower than the withstand voltage of the motor drive circuit, the motor drive circuit is not destroyed. For this reason, since the back electromotive force current does not flow through the firing drive motor M, the above-described holding torque that prevents rotation of the firing drive motor M is not generated.

  As a result, the heel 28 can hit the ball strongly by the restoring force of the adjustment spring 35. Therefore, the firing drive motor M is not affected by the holding torque, and even with a small spring having a weak restoring force, the ball striking force can be sufficiently secured, and the launch device 20 can be reduced in size and cost. Can be planned.

  FIG. 10 shows a second embodiment of the motor drive circuit provided in the circuit unit of the launching device 20, and this motor drive circuit is used for protecting the motor drive circuit in the motor drive circuit of the first embodiment shown in FIG. As a device, a small-capacitance capacitor 101 having a smaller capacity is inserted in parallel to the wiring of the firing drive motor M, and the rest is the same as the motor drive circuit of the first embodiment of FIG. Therefore, only different parts will be described.

  By providing the small-capacitance capacitor 101 in this way, even if the back electromotive force is higher than the withstand voltage of the motor drive circuit, the small-capacitance capacitor 101 having a small capacity is inserted in parallel with the firing drive motor M, so that the back electromotive force is Can be reduced. At this time, a holding torque is generated by a current flowing through the firing drive motor M. However, since the small-capacitance capacitor 101 is used, the same potential is obtained by immediately saturating, and no current flows through the firing drive motor M. The holding torque generated in is small. Therefore, it is possible to hit the ball strongly while the restoring force of the adjustment spring 35 is not significantly affected.

  FIG. 11 shows a third embodiment of the motor drive circuit provided in the circuit unit of the launching device 20, and this motor drive circuit is used for protecting the motor drive circuit in the motor drive circuit of the first embodiment shown in FIG. As elements, two small-capacitance capacitors 111 and 112 having a small capacity are inserted in parallel with the stator wiring of the firing drive motor M, and the other motor drive of the first embodiment of FIG. Since it has the same configuration as the circuit, only different parts will be described.

  In this way, the two small capacitors 111 and 112 can be provided as protection elements for the motor drive circuit. In this case as well, even if the back electromotive force is higher than the withstand voltage of the motor drive circuit, the small-capacitance capacitors 111 and 112 are inserted in parallel to the firing drive motor M, so that the back electromotive force is reduced by causing current to flow in both directions. Can be made.

  At this time, a holding torque is generated by a current flowing through the firing drive motor M. However, since the small capacitors 111 and 112 are used, the same potential is obtained by immediately saturating, and no current flows through the firing drive motor M. As a result, the amount of current flowing into the firing drive motor M is reduced, and the generation of holding torque can be suppressed, so that even if a spring having a weak restoring force is used, the game ball is strongly hit by the restoring force of the weak spring. be able to.

  As described above, when the output of the firing drive motor is cut off, the motor drive circuit generates power by rotating the main shaft that pivots with the rod as the adjustment spring is restored. What is necessary is just to select the motor drive circuit which can endure the counter electromotive force which generate | occur | produces. Furthermore, if a small-capacitance capacitor is attached to one end of the launch drive motor as a means for counter electromotive force to improve the protection performance of the motor drive circuit and increase the reliability, the back electromotive force from the launch drive motor is reduced and the motor The drive circuit can be protected.

In correspondence between the configuration of the present invention and the configuration of the above-described embodiment,
The game ball launcher of the present invention corresponds to the launcher 20 of the embodiment,
Similarly,
The motor drive circuit protection element corresponds to the small-capacitance capacitors 101, 111, 112,
Although the gaming machine corresponds to a pachinko gaming machine, the present invention can be applied based on the technical idea shown in the claims, and is not limited to the configuration of the above-described embodiment.

The external appearance perspective view which shows the front side of the game stand of a pachinko gaming machine. The external appearance perspective view which shows the back side of the game stand of a pachinko gaming machine. The external appearance perspective view of the front side of a launcher. The external appearance perspective view of the back side of a launcher. The disassembled perspective view of a launcher. The principal part vertical side view of a launcher. Operation | movement explanatory drawing which shows the rotation state of a bag. The control circuit block diagram of a launcher. The circuit diagram which shows the 1st Example of the motor drive circuit of a launcher. The circuit diagram which shows the 2nd Example of the motor drive circuit of a launcher. The circuit diagram which shows the 3rd Example of the motor drive circuit of a launcher. The circuit diagram which shows an example of the conventional motor drive circuit.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 ... Game stand 15 ... Launching handle 20 ... Launching device 25 ... Circuit part 28 ...… 35 ... Adjustment spring 87, 93 ... Capacitor 88, 94 ... Diode 89, 92 ... Stator winding 101, 111, 112 ... Small capacity capacitor M ... Launch drive motor

Claims (4)

A launch drive motor that is driven based on an operation of a launch handle that is pivotably attached to the front of the game machine, and a pivot amount of the kite according to the drive amount of the launch drive motor is attached to the pivot direction of the kite. Provided with a spring that is converted into a force and transmitted to the heel as the impact force of the heel, and when the output of the firing drive motor that outputs in a direction to increase the urging force of the spring is cut off, the heel A game ball launching device for transmitting a striking force according to the amount of rotation of the launch handle to launch a game ball,
A capacitor connected in parallel with the power source of the firing drive motor is provided, and a diode that limits a current flow based on a counter electromotive force from the firing drive motor that is generated when the output of the launch drive motor is cut off is provided in the capacitor. A control circuit for a game ball launching device, which is interposed between wiring sections connecting the power source of the firing drive motor and the stator winding of the launch drive motor at a subsequent stage. The control circuit of the game ball launching device according to claim 1, further comprising an element for protecting a motor driving circuit at a subsequent stage of the diode. The game ball launching device according to claim 2, wherein the motor drive circuit protection element uses a small-capacitance capacitor having a small capacity, and the small-capacitance capacitor is inserted in parallel with the stator winding of the firing drive motor. Control circuit. A gaming machine comprising the control circuit of the gaming ball launcher according to claim 1, 2 or 3.

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