JPS584529Y2 - Ball launcher in pachinko machines - Google Patents

Description

[Detailed description of the invention] This invention relates to a ball firing device for a pachinko machine that changes the number of balls fired per unit time by changing the driving state of the electric motor, and in particular, uniforms the elastic force of the firing rod. It is something to do.

In a ball launcher for a pachinko machine that uses an electric motor,
It is known that a variable resistor is directly connected to the electric circuit of a motor, and the player can change the firing speed of the ball by changing the resistance value of the variable resistor.

However, with this structure, changing the resistance value of the variable resistor changes the voltage of the motor, so the driving force of the motor changes significantly and the repulsive force of the ball changes.

Therefore, each time the firing speed of the ball is changed due to a change in the resistance value, the spring for firing force must be adjusted to control the spring force, and it is not always possible to obtain a uniform firing force.

Further, when the resistance value of the variable resistor is changed, the voltage of the motor changes in proportion to the change in resistance value, so it is not possible to finely adjust the firing speed, that is, the number of balls fired per unit amount.

Therefore, the following idea has recently been proposed by the present applicant.

To explain a specific example below, 1 has a guide rail 2 on the front of the game board, as is well known in pachinko machines, and a saucer 3 for holding pachinko balls below the surface. One by one, each one is guided to the firing position of the guide rail 2.

This pachinko machine is provided with a dial 4 below the surface, and when the dial 4 is operated, the ball guided to the firing position is bounced for play, and a new pachinko ball is guided to the firing position.

The dial 4 is attached to the tip of a shaft 5 as shown in FIG. 2, and the shaft 5 is rotatably supported by the pachinko machine and protrudes from the back surface, and a cam piece 6 is provided at the end.

A switch 7 faces the cam piece 6, and when the dial 4 is operated to rotate the cam piece 6, the switch 7 is turned on.

A pulley 8 is provided at the rear of the shaft 5, and a spring 11 is connected to a firing rod 10 with a wire 9 wound around the pulley 8 and the end of the wire 9 facing the firing position of the guide rail 2.
Connect to the end of the

Therefore, when dial 4 is operated, switch 7 is turned on.
In addition to this, the wire 9 can be wound around the pulley 8, the spring 11 can be tensioned, and the spring force can be adjusted using the firing rod 10.

The pachinko machine 1 has an electric motor 12 on the back side.
is electrically connected to switch 7.

Then, a reducer 13 is connected to the electric motor 12, a cam 15 is attached to the rotating shaft 14 of the reducer 13, and a roller 17 attached to the support shaft 16 of the firing rod 10 is pressed onto the outer periphery of the cam 15.

Therefore, when the switch 7 is turned on using the dial 4, the electric motor 12 is driven and the cam 15 is rotated, so that the roller 17 rotates according to the arc surface of the cam 15, and the firing rod 10 is rotated.

Then, when the roller 17 comes off the cam 15, the firing rod 10 rapidly returns and turns under the bias of the spring 11, and fires the ball at the firing position of the guide rail.

As a result, as long as the switch 7 is turned on using the dial 4, the electric motor 12 is driven to continuously fire the ball.

In the above configuration, a frequency converter 19 is connected to an electric circuit 18 in which a switch 7 and an electric motor 12 are connected in series, and an operating section 20 that changes the frequency of the frequency converter 19 is provided.
facing the surface of the pachinko machine.

In the example shown in FIG.
is protrudingly provided and is freely rotatably mounted on the shaft 5 described above.

and is connected to the frequency conversion device 19 to
A variable resistor 22 that converts the frequency of the pachinko machine 1 is shown as a semicircular wire-wound resistor 24 and a contact piece 25 on the surface of a base 23 provided on the surface of the pachinko machine 1, and the base 23 is fixed around the axis 5. There is.

On the other hand, a wire-wound resistor 24 and a contact piece 25 are provided on the back side of the operation unit 20.
A contact piece 26 is provided in contact with the operation dial 4 and the operation section 2.
0, the operating portion 20 is pressed against the variable resistor 22, and the contact piece 26 is pressed against the wire-wound resistor 24 and the contact piece 25.

Further, a display section 28 is provided on the surface of the pachinko machine 1 to indicate the number of shots per unit time (for example, one minute) when the operation section 20 is rotated, and the display section 28 is indicated by the above-mentioned instruction section 21.

Since the operating section 20 can be rotated independently of the dial 4 and the shaft 5, when the dial 4 is operated to fire the batted ball continuously and the operating section 20 is rotated as described above, the operating section 20 The number of shots per unit time changes depending on the rotation state of the ball.

For example, if the resistance value of the variable resistor 22 is decreased and the frequency of the frequency converter 19 is increased using the operation unit 20, the driving of the electric motor 12 becomes faster, and the number of times the firing rod 10 operates increases, resulting in The number of shots fired increases.

On the other hand, if you turn the operating unit 20 in the opposite direction to increase the resistance value of the variable resistor 22 and lower the frequency of the frequency converter 19, the drive of the electric motor 12 will be slowed down, and the number of shots per unit time will be reduced. .

In this case, it is the resistance value of the variable resistor that changes with the operation of the operating section, and this change in resistance value causes the frequency converter 19 to change.
Since the driving state (rotation speed) of the electric motor 12 changes due to the frequency conversion, the voltage value of the electric motor 12 does not change.

Therefore, even if the driving state of the electric motor 12 changes, the torque does not change, so the force of the ball hit by the firing rod 10 does not change.

By the way, as shown in FIG. 4, the cam 15 protrudes in the radial direction from the rotating shaft 14, and has two protruding pieces 61 that are smoothly inclined so that the tip portion 60 is approximately equal to the curvature of a circle centered on the rotating shaft. More.

Now, when the cam 15 rotates in the direction of arrow 62, the roller 17
slides from the side 63 of the protruding piece 61 toward the tip 60 and is finally released from the tip 60, causing the firing rod 10 to recover instantaneously and eject the ball.

However, according to the above configuration, when the rotational speed of the cam 15 changes due to a change in the rotational speed of the electric motor 12,
The position at which the roller 17 is released from the protruding piece tip 60 is different.

For example, when the cam 15 rotates 100 times per minute, the roller 17 is released at the position indicated by the dotted line in the figure, but when the cam 17 rotates 50 times per minute and is at a low speed, the roller 17 is released at the tip end 6.
After sliding to the most extreme position of 0, it is released at the position shown by the solid line.

As described above, since the positions at which the rollers 17 are released differ by a, a difference occurs in the elastic force of the firing rod 10 between low-speed rotation and high-speed rotation.

Therefore, the present invention eliminates the above drawbacks,
This will be explained in detail below using examples.

5 and 6 are simplified configuration diagrams showing one embodiment of a ball launcher in a pachinko machine according to the present invention, and FIG.
Components that are the same as those in FIG.

In the figure, the cam 15 is provided with a boss 70, and a rotating shaft 14 extending from the reducer 13 penetrates into the boss 70 and the center of the cam, and this rotating shaft 14 is tightened with a screw 72 and integrated with the cam 15. It becomes.

A small gear 74 is fitted onto the shaft 73 of the electric motor 12, and this gear 74 meshes with a large diameter gear 75, so that both gears perform deceleration.

A pin 76 is implanted on the end surface near the outer periphery of the large diameter gear 75.
This pin 76 enters into a notch 78 provided on the outer periphery of the actuating disk 77.

The length l of the notch 78 is set to approximately 1/6 of the circumference, for example.

A boss 81 is provided at the center of the actuating disk 77 , and one end of the rotating shaft 14 is fitted into the boss 81 and fixed with a screw 79 .

Note that 80 is a bearing.

In such a configuration, when the electric motor 12 rotates in a certain direction, the gear 75 rotates at a reduced speed via the gear 74.

When the gear 75 rotates, the pin 76 also moves in a circular motion following the rotation.

In this case, the pin 76 engages with one end of the notch 78 and rotates the operating disk 77 in this state, and this rotational force is transmitted to the cam 15, and as the cam 15 rotates, the firing rod 10
When the roller 17 slides from the side 63 of the cam 15 to the tip 60 and is released from the tip 60, the firing rod 10 is fired.

Here, in the process of rotation, the actuating disk 77 may be rotated by an external force during a period 1 before the pin 76 is moved.

Therefore, the cam 15 rotates and the roller 17 rotates on its side 63.
When the cam 15 reaches the tip 60, a force is applied by the rollers 17 to rotate the cam 15 in the same direction, and the actuating disk 77 instantaneously rotates by a distance l before the circular movement of the pin 76. At the same time, the cam 15 also rotates.

For example, when the cam 15 rotates at a high speed of about 100 revolutions per minute, the rollers 17 move along the side part 63 of the cam 15 and are located near the most extreme end of the tip 60, so that the rollers 17 move around the cam 15.
A force is generated that tries to rotate the two in the same direction.

However, this force is instantly consumed by rotating the cam 15 and the actuating disk 77 before the pin 76 moves.

Therefore, the roller 17 is released immediately after reaching the most extreme end of the cam tip 60.

In addition, when the cam 15 rotates at a low speed of about 50 revolutions per minute,
When roller 17 is located near the leading edge of cam 15, roller 1
A force is generated which causes cam 15 to rotate.

However, this force is instantly consumed and disappears by rotating the cam 15 and the actuating disk 77 before the pin 76 moves, as described above.

Therefore, the roller 17 is immediately released after reaching the most extreme end of the cam tip 60.

The force with which the rollers 17 try to rotate the cam 15 is
It changes depending on the rotational speed of the cam 15, but regardless of its strength, it is completely consumed by rotating the operating disk 77 during the section 1 before the movement of the pin 76.

Therefore, even if the cam 15 is rotated at a low speed or a high speed, the roller 17 is always released immediately after reaching the most extreme end of the cam tip 60, and is always released from a fixed position.

Therefore, the firing rod maintains a constant elasticity.

As explained above, according to the present invention, the rotating shaft 14 can freely rotate left and right by a certain angle inside the reducer, so that the rollers 17 are moved a certain distance on the sliding surface of the cam 15. Only released when sliding, low speed,
Uniform rebound force can be obtained at any high speed.

[Brief explanation of the drawing]

Figures 1 to 3 are simplified configuration diagrams for explaining the technology that is the premise of the present invention, Figure 4 is a front view of main parts showing details of the cam, and Figure 5 is a ball launcher in a pachinko machine according to the present invention. FIG. 6 is a side view of the main part showing one embodiment of the invention, and FIG. 6 is a front view of the main part. 10... Launching rod, 14... Rotating shaft, 1
5...Cam, 17...Koro, 63...
...Protruding piece, 70...Boss, 74, 75
...Gear, 76...Pin, 77...
...Operating disc.

Claims (1)

[Scope of utility model registration request] A ball launcher in which a cam is rotated by a rotating shaft of a speed reducer that decelerates the rotation of an electric motor, and the cam tilts a firing rod in a direction opposite to the firing direction and then releases it to fire a batted ball, An operating disk is provided on the rotating shaft to which the cam is attached, and the operating disk is provided with a notch that can freely rotate by a certain angle relative to the rotation of the gear of the reducer, and the pin of the gear is inserted into the notch. A ball launcher for a pachinko machine, which is characterized by: