JP3261805B2 - Pachinko ball launcher - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pachinko ball launching device provided with a motor for rotating a pachinko ball to a game board of a pachinko machine while rotating at a preset number of revolutions.

[0002]

2. Description of the Related Art Conventionally, in a pachinko ball launching apparatus, an upper limit is provided for the number of pachinko balls to be provided for a game per unit time due to various public restrictions. Usually, a motor as a power source is driven at a preset rotation speed. Rotating. In order to easily meet this required specification, a synchronous motor that rotates at a rotational speed synchronized with the frequency of the AC power supply (so-called synchronous speed) or a speed slightly lower than the synchronous speed A rotating induction motor was often used.

[0003]

However, the conventional pachinko ball firing device has the following problems. The AC motor used as a power source of the firing unit is large in size, requires a special electric circuit for starting, and requires an AC power source as a power source. For this reason, the AC power supply line must be routed, and the wiring process becomes complicated.

Further, the conventional pachinko ball firing device, which is an aggregate of large components as described above, is extremely large and occupies almost the entire back surface of the portion where the firing intensity adjusting handle of the pachinko machine is mounted. ing.

In order to solve such a problem, the present applicant has previously proposed a small device using a stepping motor as a power source of a pachinko ball shooting device, but a small ball shooting device using this stepping motor has also been proposed. As in the case of the conventional AC motor, a general-purpose motor has been applied to the pachinko ball shooting device, and no consideration has been given to power saving and reduction of heat generation as a pachinko game device.

That is, a load driven by an electric motor generally has a load torque-speed characteristic as shown in FIGS. 1 (A), 1 (B) and 1 (C). FIG. 1A shows a constant torque load characteristic, which corresponds to a gravitational load of an elevator or the like. FIG. 1B shows a constant output load characteristic, which is required for a winding operation or the like that requires a constant tension even during acceleration and deceleration. FIG. 1C is a characteristic diagram of the square torque load, which is a load characteristic of a pump, a blower, or the like that handles a fluid.

[0007] In order to cope with such various loads, the conventional general-purpose motor uses a torque suitable for any load characteristic.
An electric circuit and a magnetic circuit such as the number of windings, the winding form, the magnetic resistance between the stator and the rotor, and the like are designed to have speed characteristics. In other words, the general-purpose motor itself and its control circuit are designed so that the generated torque is constant with respect to the rotation speed, or close to inversely proportional or square inversely proportional.
The resistance is increased due to complication, and the heat loss is increased.

On the other hand, the torque-speed characteristics required of the electric motor as the pachinko ball shooting device are extremely special, and require that the motor keep rotating efficiently at a predetermined constant rotation speed. Under this required specification, there is still room for improvement in a device using a general-purpose stepping motor, and it has been possible to further reduce power consumption and heat generation.

The applicant of the present application has made further improvements based on such knowledge, solved these problems, reduced the occupied volume while omitting complicated wiring, reduced power consumption, and reduced heat generation. For the purpose, the present invention has been completed. The configuration is as follows.

[0010]

SUMMARY OF THE INVENTION A pachinko ball firing device according to the present invention includes an electric motor that rotates at a preset number of revolutions and shoots a pachinko ball supplied to a firing unit toward a game board of a pachinko machine. A pachinko ball launching device comprising:
With the rotation of the motor, the locking lever that locks to the striking rod is moved.
Move, and by the movement of the locking lever, the bias of the coil spring is
The striking rod moves in opposition, and the locking lever and the striking rod are locked.
At the position adjusted by the adjustment lever.
The ball is hit by the biasing force of the coil spring.
And the motor is driven by a step.
The gist of the present invention is to provide a ping motor, which is provided with a circuit that controls the rotational efficiency of converting the electric energy input at the rotation speed into mechanical energy to be substantially maximum.

[0011]

With the pachinko ball firing device of the present invention configured as described above , the pachinko ball is fired by rotating the electric motor.
The locking of the striking rod biased by the coil spring
By removing it at the position adjusted by the adjusting lever.
ing. As a result, the ball is hit by the biasing force of the coil spring.
The pachinko ball will be hit and the position of the adjustment lever
With the corresponding strength, the pachinko ball will be fired.
At this time, since a stepping motor is used as an electric motor that rotates at a preset number of rotations, the stepping motor rotates by transmitting a pulse signal (intermittent DC signal), and the pachinko ball is fired. Also,
The stepper motor rotation efficiency for converting electric energy charged at the time of the rotational speed which is the set to the mechanical energy is maximized such so that control.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In order to further clarify the configuration and operation of the present invention described above, embodiments of the detecting device of the present invention will be described below. First, a pachinko machine 1 equipped with a pachinko ball firing device 30 incorporating a detection device according to an embodiment will be described. FIG. 2 is a front view showing the appearance of the pachinko machine 1.

As shown in FIG. 2, a metal frame 3 is provided around an opening of a front frame 2 formed in a frame shape of the pachinko machine 1, and a glass door frame 4 and a front plate 5 Are provided to be freely opened and closed. Behind the glass door frame 4, a game board 6 removably attached to a game board fixed frame (not shown) fixed to the back surface of the front frame 2 is provided. On the front surface of the game board 6, a guide rail 8 for guiding pachinko balls is planted in a substantially circular shape, and a game area 9 is formed in a region surrounded by the guide rail 8.

At the approximate center of the game area 9, a variable winning device 10 is provided. The variable winning device 10 has a pair of open / close wing pieces 11a and 11b, and holds the open / close wing pieces 11a and 11b under a certain condition for a predetermined time (for example, 30
Seconds) or until a certain number (for example, 10)
Opening is performed until a prize is won, and such an open state is repeated several times (for example, 16 times) to perform a big hit operation for generating a large amount of prize balls in a short time. A jackpot lamp 1a is provided on the back of the variable prize winning device 10. By blinking the lamp 1a during the jackpot operation,
The fact that a jackpot operation different from a normal game rule is being performed is visually displayed to the player.

A variable display 12 composed of a plurality of digital displays is formed below the variable winning device 10. The display mode is such that pachinko balls are provided at starting winning openings 13a to 13c provided below the game area 9. Starts to change when a prize is won, and stops when a stop switch 14 provided on the front frame 2 is pressed or a predetermined time (for example, 5 seconds) elapses. Then, the display mode of the variable display 12 at the time of the stop is determined in a predetermined display mode (for example,
When the number is the same (three digits), the variable winning device 10 executes the big hit operation.

Further, in the game area 9, general winning ports 15a to 15d are provided in addition to the above-mentioned variable winning apparatus 10 and starting winning ports 13a to 13c. An out port 16 is formed to guide the pachinko ball that has not been won.

On the surface of the front plate 5, premium balls (pachinko balls) paid out due to the occurrence of winning balls are stored preferentially.
An upper plate 18 for guiding the pachinko ball to the firing position is attached. Also, two lamps 1b,
1c is buried, and a state in which the player has started playing the game with the pachinko machine 1 or a game state in which cheating has been performed is explicitly displayed.

In addition, below the front frame 2, a firing intensity adjusting handle 20 operated by a player is protrudingly fixed. An adjustment lever X for adjusting the resilience of a pachinko ball is rotatably provided on the firing intensity adjustment handle 20. The adjusting lever X is formed of a metal annular member, and as described later, a pachinko ball firing device 30 is provided.
Of the circuit elements constituting the parallel resonance circuit 345 of FIG. Further, the firing intensity adjustment handle 20 is provided with a single shot switch 22. This one-shot switch 22
When this is operated, the solenoid clutch 4
8 is operated to interrupt the transmission of the rotation of the pachinko ball firing motor 321 to interrupt the firing of the pachinko balls. Note that a similar function can be realized by adopting a configuration in which the motor is stopped.

Below the front frame 2 and beside the firing intensity adjustment handle 20, a lower plate 23 for storing a premium ball to be paid out when the upper plate 18 is full is mounted.

Next, the structure of the pachinko ball firing device 30 disposed on the back of the pachinko machine 1 at the position where the firing strength adjusting handle 20 is mounted will be described with reference to FIGS. FIG. 3 is a diagram showing a part of the back of the pachinko machine 1. As shown in the drawing, a firing motor mechanism 32 and a ball firing mechanism 40 driven by the rotational force of the firing motor mechanism 32 are disposed on the rear surface of the mounting position of the firing strength adjustment handle 20.

FIG. 4 is an exploded perspective view of the firing motor mechanism 32. As shown, the firing motor mechanism 32
Is composed mainly of a launching motor 321 composed of a stepping motor, a radiation fin 322 made of aluminum die-cast, which surrounds the launching motor 321 and helps heat radiation, and a substantially horseshoe shape which is interposed when attaching the launching motor 321 to the radiation fin. And a speed reducer 324 that engages with the rotation shaft of the firing motor 321 to reduce the speed by 5: 1.

The firing motor 321 is a four-phase stepping motor. When a pulse signal of a DC power supply voltage of 28 [v] is given at 400 [pps] by a two-phase / two-phase excitation method, the rotation axis of the launch motor is 500 [ rpm]. That is, when a pulse signal of 400 [pps] is input to each excitation phase of the firing motor 321, the rotating shaft of the firing motor mechanism 32 rotates at 100 [rpm]. In this embodiment, it is assumed that the number of pachinko balls to be provided for a game per minute is 100 pieces / minute.

FIG. 5 is a torque-speed characteristic diagram of the firing motor 321. The horizontal axis represents the rotation speed [rpm] of the firing motor mechanism 32 (1/3 of the rotation speed of the firing motor 321) for reference.
5) is also shown. As shown in the figure, the torque-speed characteristics of the firing motor 321 are significantly different from those of the general-purpose motor (see FIG. 1), and the electric circuit and the magnetic circuit thereof are optimally adapted to the configuration of the firing motor mechanism 32 of this embodiment. Is designed. That is, the torque-speed characteristic of the firing motor 321 changes from a gentle falling characteristic in a low-speed region to a sharp one in a high-speed region at a pulse number of 400 [pps] (rotational speed of the firing motor mechanism 32 of 100 [rpm]). It changes to a descending characteristic. Therefore, the output-speed characteristic becomes a peak curve with a peak of 400 [pps] in number of pulses, and similarly, the efficiency η [%] shows the maximum value at 400 [pps] of pulse.

On the other hand, the ball firing mechanism 40 includes a coil spring 4
2, a hitting rod 44 biased by the coil spring 42, a locking lever 46 for causing the hitting rod 44 to hit the ball with a cam mechanism (not shown), and the like. Therefore, when the above-described firing motor mechanism 32 rotates, the rotation of the cam mechanism (not shown) causes the locking lever 46 to initially pull the hitting rod 44 in the leftward direction in the figure against the coil spring 42. Accordingly, the coil spring 42
Gradually stretches. When the rotation shaft of the firing motor mechanism 32 rotates by a predetermined angle, the locking between the cam mechanism and the locking lever 46 is released, and the striking rod 44 attempts to return to the original position at once by the force of the coil spring 42. Hit the ball. The strength of the hitting rod 44 hitting the pachinko ball is the hitting rod 4
It is determined by the state of extension of the coil spring 42 when the position 4 returns. Since this extended state is determined by the amount of rotation of the adjusting lever X of the firing intensity adjusting handle 20, the pachinko ball is eventually fired with a strength corresponding to the position of the adjusting lever X. Also, in this manner, the pachinko ball firing device 30
The number of pachinko balls fired from per unit time is
The number of revolutions of the firing motor mechanism 32 (100 [rpm]) is limited to 100 revolutions / minute.

When the single-shot switch 22 is operated, the solenoid clutch is operated and the transmission of the rotational force of the firing motor mechanism 32 is interrupted. Therefore, this single-shot switch 22
By appropriately operating, it is also possible to use a single shot of a pachinko ball.

As described above, when the single-shot switch 22 is not operated, one pachinko ball is fired at a rate of one rotation of the firing motor mechanism 32. In addition, the strength of firing a pachinko ball is proportional to the amount of rotation of the adjustment lever X. By operating the single-shot switch 22, the strength of firing a pachinko ball can be made sporadic while maintaining the strength of firing a pachinko ball. it can.

The rotation speed control of the firing motor mechanism 32 for determining the firing state of the pachinko ball firing device 30 is determined by the pulse signal input rate from the control circuit 34 disposed near the firing motor mechanism 32. Next, the configuration and the like of the control circuit 34 will be described. FIG. 6 is a block diagram showing an electric circuit of the pachinko machine 1 centering on the pachinko ball firing device 30 including the control circuit 34, the firing motor mechanism 32, and the single-shot switch 22.

As shown in the figure, the control circuit 34 is composed mainly of a one-chip microcomputer (hereinafter, referred to as MPU) 341 in which peripheral circuits are housed in one chip. That is, the MPU 341 includes a core CPU, a ROM storing various programs, and a clock circuit 342.
RAM and M which have a built-in timer system for measuring the real time from the clock signal of
It incorporates an external circuit of the PU 341 and an input / output port for supporting input / output of various information. In addition, MPU341
Has a port PU that can directly input analog signals,
An analog signal can be input while being directly converted to a digital signal with a predetermined resolution (here, 8 bits).

The driver circuit 343 includes a monitor lamp L1.
Or a large power-consuming load such as L3, solenoid clutch 48 and firing motor mechanism 32.
It is driven based on a control signal from the MPU 341.
Control signals of the output ports PO1 to PO8 are generated, and an 8-bit signal corresponding to the control signals is generated. Among them, the 4-bit output signal of the driver circuit 343 is output to the connector CN1 via the current limiting resistors R1 to R4. The power supply voltage Vc (28 [V]) is connected to the connector CN1.
The monitor lamps L1 to L3 and the solenoid clutch 48, which receive the output via the connector CN1, turn on or operate when the corresponding output signal of the driver circuit 343 becomes low level.

The monitor lamps L1 to L3 indicate the operation mode of the control circuit 34, and are used to display various information such as the type of the control circuit 34 and the type of error when an error occurs.

On the other hand, the other four bits of the output signal of the driver circuit 343 are directly used as the excitation signals φ1 to φ4 for the firing motor mechanism 32. Firing motor mechanism 32
Receives the excitation signals φ1 to φ4 and the power supply voltage Vc via the connector CN2. The MPU 341
By controlling the pulse rate of the excitation signals φ1 to φ4, the rotation of the firing motor mechanism 32 can be controlled. As described above, by sending a pulse signal of 400 [pps], 100 / min pachinko balls are sent out. Fire. Note that the Zener diode ZD1 connected between the driver circuit 343 and the power supply Vc is for absorbing a surge caused by the L load.

The four input ports PI1 to PI1 of the MPU 341
The PI 4 is used to change the operating conditions of the MPU 341. The control program to be burned into the ROM of the MPU 341 of the present embodiment includes the input ports PI1 to PI
It is designed in advance to detect the input state of No. 4 and change operating conditions such as a branch condition, a control target, a control amount, a variable to be selected, and a control timing according to the result.

The other input port PIS of the MPU 341 is a port for detecting the operation state of the single-shot switch 22, and is connected to the single-shot switch 22 via a chattering removing integration circuit including resistors R5 and R6 and a capacitor C1, and a connector CN3. Is done. Since this signal line is pulled up by the resistor R7, an "H" level signal is input to the input port PIS unless the single-shot switch 22 is pressed. On the other hand, when the single switch 22 is pressed, the signal to the input port PIS changes to “L” level, and the operation state of the single switch 22 is determined. In addition,
The diode D1 is interposed for protection.

The rectangular wave output from the output port PS of the MPU 341 has a time constant τ (= R) due to the integrating action of the resistor R10 (resistance value R) and the capacitor C2 (capacitance value C).
C) Capacitor C3 to cut DC component
, And is input to the parallel resonance circuit 345 approximately in the form of a sine wave AC waveform. Here, the parallel resonance circuit 345 is a parallel-type resonance circuit composed of a coil L and a capacitance component of an adjustment lever X connected via a capacitor C4 and a resistor R11. In order to facilitate the connection with the connector, it is separated by using a connector CN4. The circuit constants of the constituent elements of the parallel resonance circuit 345 including the adjustment lever X are determined so as to show a sharp resonance state when the player is in a non-contact state with the adjustment lever X.

In order to detect the impedance value of the parallel resonance circuit 345 to which the AC signal is applied, the MPU 34
Of the one input port, an input port PU capable of converting an analog voltage into a digital value and inputting it is used. Therefore, the terminal voltage of the parallel resonance circuit 345 is
5 and is half-wave rectified by a diode D2, and is connected to a resistor R12 and a capacitor C6.
And the input port PU
Is input to Therefore, a voltage signal proportional to the magnitude of resonance of the parallel resonance circuit 345 is input to the input port PU. Note that a resistor R13 is interposed between the signal line to the input port PU and the ground line for discharging the charge stored in the capacitor C6.

As described above, the circuit constants of the parallel resonance circuit 345 including the adjusting lever X are determined so as to show a sharp resonance state when the player is not in contact with the adjusting lever X. Therefore, when the voltage signal detected from the input port PU is equal to or more than the predetermined value, the MPU 341 determines that the player is not in contact with the adjustment lever X and stops sending the pulse signal to the firing motor mechanism 32. . Conversely, when the detected voltage signal at the input port PU is equal to or less than the predetermined value, it is determined that the resonance state of the parallel resonance circuit 345 is broken because the player has touched and operated the adjustment lever X, and the firing motor mechanism 32 Start control.

At this time, the control circuit 34
FIG. 7 shows a temporal change of the pulse signal output for 1. As shown in FIG.
On the other hand, the control circuit 34 first outputs the signal of 280 [pps] as a pulse number by 120. Starting operation at a low pulse rate is due to the pulse rate 40 during operation.
If 0 [pps] is output suddenly, the firing motor 321 may step out, and a large torque is required at startup. At 280 [pps], as shown in FIG. 5, the efficiency of the firing motor 321 is not the highest, but the torque is higher than when operating at 400 [pps]. Therefore, the firing motor 321 starts up quickly. Subsequently, a pulse signal of 400 [pps] for steady operation is output. During this time, it is only 0.43 seconds. Therefore, as soon as the player grips the adjustment lever X, the pachinko ball is fired at the normal firing interval. Since the number of pachinko balls fired is regulated at 100 pieces / minute, that is, 0.6 seconds / piece, the player does not feel uncomfortable.

The control circuit 34 includes, in addition to the circuits described above,
A resistor R2 for delaying the reset timing of the MPU 341 by a predetermined time from the rise of the power supply Vcc.
0, R21, capacitors C20, C21 and a diode D10 to form an integrating circuit 346, and the MPU 3
41 RESET port. In order to generate the power supplies Vc and Vcc from an AC power supply (AC 24 [V]), a power supply circuit 347 including a diode full-wave rectifier circuit, a smoothing circuit, a voltage stabilizing circuit using a Zener diode, and the like is formed. .

According to the pachinko ball firing apparatus 30 of the present embodiment configured as described above, the following effects are apparent. The pachinko ball firing device 30 of the present embodiment employs a stepping motor that can be directly driven by a pulse signal from the driver circuit 343 as the firing motor 321 that is a power source for firing pachinko balls. For this reason, compared with the conventional large AC motor which requires a special electric circuit for starting, the firing motor mechanism 32
In addition, it is not necessary to route the AC power line, and the size can be reduced.

As described above, the pachinko ball firing device 3 of this embodiment is
0 can be configured extremely easily and in a small size, so that the firing motor mechanism 32 and the control circuit 34 can be integrally formed without being separately formed as shown in FIG.
In addition, even when the control circuit 34 and the firing motor mechanism 32 are integrally formed, since the whole occupied volume is extremely small, all of them can be built in the firing intensity adjustment handle 20. Launch intensity adjustment handle 2
It is also possible to dispose other component devices, for example, a card reader of a card-type pachinko ball lending machine, on the back side.

Further, as shown in FIG. 5, the torque-speed characteristic of the firing motor 321 is such that the pulse number is 400 [pps].
The efficiency η [%] has a maximum value at a peak of (the rotation speed of the firing motor mechanism 32 is 100 [rpm]). Therefore, during the game of the pachinko machine 1, the firing motor 321 always keeps the operation state of the maximum efficiency, so that the power saving can be achieved and the radiant heat from the radiation fins 322 is suppressed to be small. Most suitable for built-in structure. In addition, since the time until the driving state with the maximum efficiency is short, if the player grips the adjusting lever X, the state immediately becomes the same as the firing interval of the pachinko balls in the steady state, and when starting to use, the player feels uncomfortable. There is no such thing.

Further, in order to detect a game state in which the player is holding the adjustment lever X, the present embodiment employs a parallel resonance circuit 345 having a simple circuit configuration including a coil L and a capacitor C4. . For this reason, the constituent circuit elements of the whole pachinko ball launching device 30 are largely omitted,
It can be made small and inexpensive. Further, the determination as to whether or not the player is holding the adjustment lever X is made by determining the change state between the reference Q and the current Q by the deviation width Δf of the resonance frequency fQ,
Advanced information processing techniques can be utilized, such as judging the deviation width ΔZ of the maximum impedance at the resonance frequency and the difference in the frequency width fz at which the maximum impedance is １ ／ alone, or combining these pieces of information as appropriate. . Therefore, the accuracy of the determination is significantly improved as compared with the conventional binary determination of whether the oscillation circuit is oscillating.

Although the embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and it is needless to say that the present invention can be carried out in various modes without departing from the gist of the present invention. is there. For example, in this embodiment, a four-phase stepping motor is used as the launching motor 321 and is driven by a two-phase / two-phase excitation system. ―
An excitation method such as a two-phase excitation method may be used. The speed reducer 324 employed in this embodiment is for firing pachinko balls at a rate of 100 pieces / min when the firing motor 321 is driven at the maximum efficiency, and is employed according to the torque-speed characteristics of the firing motor 321. And the reduction ratio etc. may be determined.

In order to detect the power supply period to the firing motor 321, the holding state of the adjusting lever X is detected by the parallel resonance circuit 345, but a series resonance circuit may be used instead. . Also, instead of detecting the terminal voltage to detect the resonance state of these resonance circuits, the impedance of the resonance circuit is detected using a bridge circuit or the like, or the phase difference between the voltage and the current is detected. It can be embodied in various ways. Further, in this embodiment,
The circuit constant is designed so that the parallel resonance circuit 345 shows the sharpest resonance state when the player does not hold the adjustment lever X, but when the general player holds the adjustment lever X, It may be designed to obtain the sharpest resonance state. Of course, the use of an old touch sensor or a mechanical switch is not a problem.

[0045]

As described above, according to the pachinko ball firing apparatus of the present invention, the intensity of the pachinko ball firing can be adjusted.
The bias of the coil spring that biases the hitting rod at the bar position
Determined by the force, and at the position of this adjustment lever
Using a stepping motor as the motor to release the lock
I have. For this reason, the pachinko balls can be fired by using a small stepping motor that can be driven by a DC power source as a power source, and complicated wiring of the AC power line is omitted. Further, since the rotation of the stepping motor can be directly controlled by an electronic circuit, a complicated and large starting circuit is not required, and the volume occupied by the entire apparatus can be greatly reduced.

Further, since the stepping motor of the present invention is operated at the maximum efficiency when driven at the number of rotations corresponding to the number of pachinko balls fired per unit time required for the pachinko machine, it is possible to achieve power saving and radiation. The heat is suppressed to a small extent, which is not only optimal for reducing the weight and size of the device, but also enables to meet social demands for resource saving.

[Brief description of the drawings]

FIG. 1 is a load torque-speed characteristic diagram of a load generally driven by an electric motor.

FIG. 2 is a front view of a pachinko machine provided with a pachinko ball firing device according to one embodiment of the present invention.

FIG. 3 is a partial back view of the pachinko machine.

FIG. 4 is an exploded perspective view of a firing motor mechanism according to the embodiment.

FIG. 5 is a torque-speed characteristic diagram of a firing motor employed in the firing motor mechanism.

FIG. 6 is an electric circuit block diagram centered on a control circuit 34 for realizing the pachinko ball firing device of the embodiment.

FIG. 7 is a graph showing a profile of a pulse rate when the firing motor 321 is started in the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Pachinko machine 20 ... Firing intensity adjustment handle 22 ... Single shot switch 23 ... Lower plate 30 ... Pachinko ball firing device 32 ... Firing motor mechanism 321 ... Firing motor 322 ... Radiating fin 324 ... Reduction gear 34 ... Control circuit 40 ... Ball firing mechanism 42 ... Coil spring 44 ... Battering rod 46 ... Locking lever 48 ... Clutch 34 ... Control circuit 341 ... MPU 342 ... Clock circuit 343 ... Driver circuit 345 ... Parallel resonance circuit 346 ... Integration circuit 347 ... Power supply circuit

Continuation of the front page (56) References JP-A-50-90906 (JP, A) JP-A-1-315299 (JP, A) JP-A-1-218396 (JP, A) JP-A-5-11984 (JP) , U) Daiki Ebihara, Stepping Motor Utilization Technology, Japan, Industrial Research Institute, Inc., September 5, 1984, p. 102-p. 103 (58) Fields investigated (Int. Cl. ⁷ , DB name) A63F 7/02 H02P 8/00

Claims (1)

(57) [Claims] 1. A pachinko ball launching device comprising: a motor that rotates at a preset number of revolutions and shoots a pachinko ball supplied to a firing unit toward a game board of a pachinko machine. Locking lever that locks to the hitting rod by rotation
And by moving the locking lever, the coil spring is attached.
The striking rod moves against the force, and the locking lever and the striking rod
To release the lock at the position adjusted by the adjustment lever
The ball is hit by the biasing force of the coil spring.
A circuit configured to hit a ball, the electric motor being a stepping motor, and a circuit for controlling the rotational efficiency of converting the applied electric energy into mechanical energy at the rotation speed to be substantially maximum.
Pachinko ball launcher equipped .