JPS582379Y2 - Ball launcher for pachinko machines - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a ball launcher for a pachinko machine, and particularly to a launcher that allows the number of balls to be fired to be freely adjusted.

Recently, a ball launcher using an electric motor has been developed that uses a cam to tilt the firing rod and then releases it at a certain angle, allowing the spring force to instantly restore the firing rod and fire the ball. Proposed.

In this case, the elastic force is adjusted by rotating a dial that adjusts the tension of the spring.

The above spring causes vertical vibrations between the time the firing rod tilts and the time it recovers, which causes the traction force acting on the firing rod to fluctuate slightly, making it impossible to maintain a constant flight distance for the ball. It has its drawbacks.

The purpose of the present invention is to always maintain a uniform flight distance of the ball by suppressing the spring that pulls the firing rod with the pressing force of the vibration suppressing member from when the firing rod is tilted until it is restored. This will be explained in detail below using examples.

Fig. 1 is a simplified configuration diagram showing an embodiment of a ball launcher for a pachinko machine according to the present invention, and Fig. 2 is a diagram showing its main parts. A speed reducer 3 is installed to reduce speed, and a cam 5 deformed into a substantially S-shape is fixed to the tip of a rotating shaft 4 of this speed reducer 3, and a cam 5 protrudes from a firing rod 6 on the sliding surface of this cam 5. A rotatably positioned roller 8 comes into contact with the pin 7.

The firing rod 6 is capable of swinging within a certain angle range around a fulcrum 9, and one end of a spring 11 is engaged with a hook 10 protruding from approximately the center thereof, and the other end of the spring 11 is connected to an adjustment plate 33. Wire 12 is connected via.

After the wire 12 is hung on the pulley 13, the dial 14
It is wound around a pulley 16 provided on a shaft 15 that is integrated with.

Therefore, by rotating the dial 14 at an appropriate angle, the wire 12 can be pulled or loosened.
This allows the tension of the spring 11 to be adjusted, and the firing rod 6
You can adjust the force of the bullet.

The speed of the electric motor 2 is changed according to the output frequency from the frequency conversion device 17.

For example, a single-phase induction motor is adopted as the electric motor 2, and the electric motor of this type is n = 12Of/p.
(rpm) (where n is the number of rotations, f is the frequency, and P is the number of poles), the number of rotations can be freely adjusted by changing the frequency.

The frequency conversion device 17 is composed of, for example, a combination of an oscillator and a power amplifier, and includes a resistor that determines its output frequency;
The size of element capacitance such as a capacitor and inductance is adjusted by a small dial 18 located on the front surface of the dial 14.

An arrow indicating a scale is added to the small dial 18.
．． Based on the indicated value of this arrow, the size of the element capacitance is changed to an appropriate size, whereby a predetermined output is sent out from the frequency conversion device 17, and the electric motor 2 is controlled.
The firing rod 6 fires a number of batted balls corresponding to the indicated value on the scale.

For example, if the dial 18 is set to a scale of 50, the firing rod 6 will fire the ball 50 times per minute.

19 is a switch connected between the electric motor 2 and the frequency conversion device 17 to turn on and off the output from the device 17; 23.

A vibration suppressing member 24 has a bracket 26 through which a pin 25 passes, and swings around the pin 25 as a fulcrum, and is made of a thin piece bent in an inverted C-shape. is installed.

This roller 28 is located above the spring 11, and a U-shaped groove 29 formed at the center of its outer circumference is located above the spring 11.
Fits the outer circumference of 1.

A lever 30 on the opposite side of the lever 27 across the fulcrum 25 is located on a cam 31 provided at the tip of the shaft 15.

The cam 31 has a sliding surface 3 with the lever 30 as shown in FIG.
2 is formed into a spiral shape centered on the shaft 15.

Therefore, when the cam 31 rotates in the direction of the arrow, the lever 3
0 is pushed up, the lever 27 is lowered, and the roller 28 holds and presses the spring 11 in the groove 29.

As a result, the spunong 11 no longer vibrates.

That is, according to this embodiment, when the dial 14 is rotated in the direction of the arrow, the tension of the spring 11 increases and the frequency of the spring tends to increase.
Since the spring 11 is pressed in approximately proportion to the amount of operation of the dial 14, the vibration of the spring 11 can be suppressed, which causes the traction force acting on the firing rod 6 to fluctuate, resulting in an uneven firing distance of the ball. can be removed.

Furthermore, as the rotational speed of the electric motor 2 increases and the number of shots of the firing rod 6 increases, the spring 11 becomes more likely to vibrate, which may change the firing distance of the ball. Invented vibration suppression member 2
According to No. 4, the problem can be solved in a number of ways.

As explained above, according to the present invention, the elastic member such as a spring that pulls the firing rod 6 in the firing direction is pressed by a vibration suppressing member to prevent vibrations, so the traction force acting on the firing rod can be set uniformly at all times, resulting in the effect of keeping the flight distance of the batted ball constant.

Furthermore, since the pressing force of the vibration suppressing member can be adjusted in accordance with the traction force of the elastic member, the flight distance of the ball can always be stabilized even if the firing force is increased or decreased.

[Brief explanation of the drawing]

FIG. 1 is a simplified configuration diagram showing an embodiment of a ball launcher for a pachinko machine according to the present invention, and FIG. 2 is a side view showing the main parts of the device. 2...Electric motor, 3...Reducer, 5...
...Cam, 11...Spring, 24...
... Vibration suppressing member, 28 ... Roller, 29
...Groove, 31...Cam.

Claims (3)

[Scope of utility model registration request] (1) A vibration suppressing member is pressably provided on the elastic member that pulls the firing rod in the firing direction, and the operating part that adjusts the elastic force of the elastic member and the vibration suppressing member are connected, and vibration is suppressed by operating the operating part. A ball firing device for a pachinko machine, characterized in that the pressing force of the member is controlled to suppress fluctuations in the traction force acting on the firing rod due to vibration of the elastic member. (2) A ball launcher for a pachinko machine according to claim 1, which uses a spring as the elastic member and presses the spring with a roller having a groove that fits the outer periphery of the spunong. (3) Utility model registration claimed in claim 1 or 2, in which the roller is attached to a seesaw unit capable of seesaw movement, and this seesaw unit is controlled by an operating section that adjusts the elastic force of an elastic member. Ball launcher for pachinko machines.