JPH07163704A - Pachinko ball shooting apparatus - Google Patents

Abstract

PURPOSE:To improve feeling in the use of a pachinko machine by stopping a cam constantly at a home position to allow the shooting of pachinko balls without requiring a large initial torque for a motor and constantly in a fixed time after the start of the motor. CONSTITUTION:In a pachinko ball shooting apparatus in which a pin 14 turns with the driving of a motor 11 coming off a cam 13, a pachinko ball 16 on a shooting rail 5 is the resilience of a spring 6, a control circuit is formed to control the rotation of the motor 11 and a current detection means to detect a engaging or disengaging timing of the cam 13 or the pin 14 from changes in current of the motor 11 when the cam 13 is engaged with the pin 14 or disengaged therefrom. When the operation of a handle 8 is released, the rotation of the motor 11 is stopped at a fixed time during the non-engagement period thereof between the cam 13 and the pin 14 as detected by the current.

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 for an electric pachinko machine, which is driven by a motor and reciprocally swings a mallet to continuously hit and shoot pachinko balls onto a board surface.

[0002]

2. Description of the Related Art Generally, as is well known, a hitting and launching device of a pachinko machine supports a hammer for hitting a ball with a bearing so that the hammer can be reciprocally rocked, and the hammer is biased in one direction by a spring.
A pin is provided on a part of the mallet, and the player operates the handle on the front of the pachinko machine to energize the motor to drive the cam to rotate, and the cam hits the pin to cause the mallet to move to the spring. The cam is further urged against elasticity, and when the cam is further rotated by the drive of the motor and is disengaged from the pin, the elasticity of the spring strikes the pachinko ball on the firing rail.

In this conventional pachinko ball launching apparatus, an induction motor is mainly used as a driving motor, and the cam is operated at 100% per minute via a reduction gear.
By rotating, 100 shots can be shot in 1 minute.

[0004]

By the way, in the pachinko ball launching device configured as described above, since it is not determined at which rotational position the cam stops when the hand is released from the handle, the cam hits the pin. Stops when the is pulled, or when the cam is far from the pin, or the stop state is not constant.

Therefore, there is a problem in that the time required from the moment the handle is touched to the next time a ball is fired until the ball is actually fired is not constant. For this reason, the ball may be inadvertently fired in some cases, and on the other hand, it may take too long to be fired.

Further, in order to enable the motor to be started even when the mallet is pulled, a large starting torque is required for the motor to be used, which causes a problem that the motor is large and the cost is high. is there.

[0007]

SUMMARY OF THE INVENTION A pachinko ball launching device of the present invention is intended to solve the above-mentioned problems. A hammer for hitting a ball is pivotally supported by a bearing so as to be reciprocally swingable, and the mallet is supported by a spring. A pin is provided on a part of the mallet by urging it in one direction, and the motor is energized by operating the handle on the front of the pachinko machine to rotate the cam, and the cam engages with the pin. The mallet is biased against the elasticity of the spring,
The rotation of the motor is controlled in a pachinko ball launching device in which the elasticity of the spring strikes the pachinko ball on the launch rail when the cam is further rotated by driving the motor and the pin is disengaged from the cam. A control circuit is provided, and current detection means for detecting the engagement / disengagement timing of the cam and the pin from the fluctuation of the current of the motor when the cam is engaged with the pin and when the cam is not engaged is provided. Is released, the rotation of the motor is stopped at a certain time during the non-engagement time of the cam and the pin detected by the current.

[0008]

When the cam is engaged with the pin, the motor is loaded and the current value becomes higher than when there is no load. Therefore, the current detecting means can detect the engagement / disengagement timing, and the handle operation is released. Then, the cam is always stopped at a predetermined position by stopping the motor at a certain time during the non-engagement time based on the engagement / disengagement timing information. Therefore, when restarting, the motor can be started without applying an excessive starting torque.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a pachinko ball launching device mounted on the back surface of a pachinko machine. In the figure, 1 is a mallet supported by a spindle 2 so as to be reciprocally swingable, and 3 is a stopper for limiting the reciprocating swing range of the mallet 1. Reference numeral 4 denotes a striking portion at the tip of the mallet 1 which faces the firing rail 5. Reference numeral 6 denotes a coil-shaped spring that biases the mallet 1 in one direction, and the other end of the spring 6 is wound around a tension adjusting machine 7. Reference numeral 8 denotes a handle protruding from the front of the pachinko machine. One end of the rope 10 is fastened to a pulley 9 provided on the rotating shaft of the handle 8 and the other end of the rope 10 is fastened to the tension adjuster 7. There is. Therefore, the tension of the spring 6 can be adjusted by rotating the handle 8.

Reference numeral 11 denotes a rotary shaft 12 having a curved ball-shaped cam 13
Is fixed to the rotary shaft 12, and the rotating shaft 12 is adjusted so as to rotate 100 times per minute by energization. Reference numeral 14 is a pin provided at the tip of the lever 15 so as to be integrated with the mallet 1. The pin 14 is normally located on the rotation track of the cam 13, and the cam 13 is positive in the direction indicated by the arrow. When the pin 14 is rotated, the pin 14 is pressed by the cam 13 against the elasticity of the spring 6, and the mallet 1 is swung about the support shaft 2 as a fulcrum.
Of the pachinko ball 1 on the launch rail 5 which is restored by the elasticity of
6 is hit and fired.

FIG. 2 is a block diagram showing the power supply circuit of the motor 11. In the figure, 17 is a control circuit for controlling the power supply to the motor 11, and 18 is a current detection means of the motor 11. The handle 8 has a built-in touch switch circuit, and when the player touches the handle 8, the touch switch circuit is activated, the signal is transmitted to the control circuit 17, the motor 11 is energized, and the cam 13 is rotated to rotate the cam 13. In this way, the pachinko ball 16 can be shot 100 times per minute.

FIG. 3 is a graph showing the fluctuation of the current detected by the current detecting means 18 while the pachinko ball 16 is being fired as described above. In the figure, (a) indicates that the motor 11 has the cam 13 engaged with the pin 14.
Time (engagement time) during which the load is applied and the current value is increasing,
(B) shows that the cam 13 is not engaged with the pin 14 and the motor 1
Reference numeral 1 is a time (non-engagement time) in which the current value is low due to the no-load rotation.

The current detecting means 18 detects such a periodic fluctuation of the current flowing through the motor 11 and determines the engagement time (a).
Or the non-engagement time (b). For the determination, a method in which the current is a predetermined value or more as the engagement time (a) and the current is a predetermined time or less as the non-engagement time (b) can be used. It is possible to properly understand when the current rises, when the current drops suddenly, etc. Good detection is possible. Then, the control circuit 17 stops the rotation of the motor 11 only at a certain time during the non-engagement time (b) when the hand is released from the handle 8, and the cam 13 is always engaged with the pin 14. Stop at a fixed position.

FIG. 4 shows an example of a flow chart of this operation. Next, an embodiment of the present invention will be described with reference to the same figure.
When the player touches the handle 8, the motor 11 rotates as shown in steps a and b, and the current detection means 18 detects the current fluctuation as shown in steps c and d. Then, the control circuit 17 calculates and stores the required stop time from the current fluctuation. For example, the required stop time is 0 from when the detected current reaches its maximum.
Assuming that it is 1 second later (since 0.1 second is inevitably the non-engagement time (b)), the required stop timing is set to the control circuit
The optimum stop time is always stored by storing it in the internal memory and updating the memory content every time the motor 11 makes one revolution.

When the hand is released from the handle 8, it is determined whether or not the time corresponds to the required stop time stored in step d as shown in step e. If the time is the required stop time, the motor 11 is immediately turned on. The motor 11 is stopped (step f). If not, the motor 11 is further continuously rotated (step g), and the motor 11 is stopped after waiting for the required stop time. Therefore, the motor 11 can be reliably stopped at a fixed position where the cam 13 is not engaged with the pin 14.

The motor 11 can be used regardless of the type of motor such as an induction motor or a stepping motor.

[0017]

As described above, the pachinko ball launching device of the present invention is a device for hitting and launching a pachinko ball through a pin and a mallet by rotating a cam by a motor, so that the cam can always be stopped at a fixed position. It is possible to make the time required for a person to operate a handle in order to shoot a pachinko ball until the ball is actually hit to be constant. For this reason, the ball is not inadvertently shot in a short time, or on the contrary, it does not take too long until the ball is fired, which is convenient.

Further, since the cam does not stop while the mallet is being pulled, a large load is not applied to the motor at the time of starting, and therefore a motor with a relatively small starting torque is used. Even so, there is a beneficial effect that you can always start smoothly.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a pachinko ball launching device of the present invention.

FIG. 2 is a block diagram of a power supply circuit of a motor showing an embodiment of a pachinko ball launching device of the present invention.

FIG. 3 is a load current fluctuation diagram of a motor.

FIG. 4 is a flowchart showing an embodiment of a pachinko ball launching device of the present invention.

[Explanation of symbols]

 1 mallet 2 spindle 3 stopper 4 hitting part 5 firing rail 6 spring 7 tension adjuster 8 handle 9 pulley 10 rope 11 motor 12 rotating shaft 13 cam 14 pin 15 lever 16 pachinko ball 17 control circuit 18 current detection means

Claims (1)

[Claims] 1. A hammer for hitting a ball is rotatably supported by a bearing so as to be reciprocally swingable, and the mallet is biased in one direction by a spring. The handle is operated to energize the motor to rotate the cam, and the cam engages with the pin to bias the mallet against the elasticity of the spring, and the cam is further driven by the motor. In a pachinko ball launching device in which the elasticity of the spring causes the pachinko ball on the launch rail to be hit when the pin rotates and the pin comes off the cam, a control circuit for controlling the rotation of the motor is provided, and the cam is Current detecting means is provided for detecting the engagement / disengagement timing of the cam and the pin based on the variation of the electric current of the motor when the pin is engaged and when not engaged, and when the handle operation is released, the current is detected by the current. Detected A pachinko ball launching device, wherein rotation of a motor is stopped at a certain time during a non-engagement time of a pin and a pin.