JPH0415709B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a ball firing device for a so-called electric pachinko machine that fires pachinko balls by rotating a motor.

[Prior Art] Conventionally, as shown in FIG. 5, in this type of general electric pachinko machine, a firing rail 2a is attached to the front of a game board 1a, and a ball hammer 3a is mounted on the back of a front frame 4a. It is worn. Then, one end of the coil spring 5a is connected to the ball hammer 3a to bias it in the firing direction, and the coil spring 5a is applied to the take-up pulley 7a, which is rotated by the rotation of the handle 6a attached to the front surface of the front frame 4a. The other end is connected via a wire 8a, and by rotating the handle 6a, the tension of the coil spring 5a is adjusted, and a cam 10a fixed to the output shaft of the motor 9a is driven. By engaging with the engagement pin 11a of the ball hitting mallet 3a, the ball hitting mallet 3a is rotated to eject the free ball at the firing position of the firing rail 2a.

However, the above-mentioned general electric pachinko machine has (a) a coil spring 5a for urging the ball hammer 3a;
(b) A batting mallet 3
Since the handle 6a is mechanically connected to the handle 6a, the vibration when hitting the ball is transmitted to the handle 6a, causing discomfort and fatigue to the player. The impact causes deformation and abrasion of the hammer 3 at the firing position.
There were various problems such as the positional relationship of a being distorted.

In order to solve all these problems, the following technologies have been developed. The configuration will be explained below with reference to FIG.

The relationship between the game board 1a, the firing rail 2a, the ball hammer 3a, and the front frame 4a is the same as described above. A driven side magnet 13a is fixed to the front surface of the ball hammer 3a. The driven side magnet 13a is formed by connecting fan-shaped magnet pieces obtained by dividing a circular plate into even numbers. The driven side magnet 13a is arranged so that the magnetic pole faces the circular flat plate side and the N and S poles alternate. On the other hand, a driving side magnet 14a having the same configuration as the driven side magnet 13a is directly connected to the output shaft 9a' of the motor 9a.
4a is arranged concentrically with the driven side magnet 13a with a slight interval therebetween, and both magnets 13a and 14a face each other. Further, the batting mallet 3a is attached to the front frame 4.
Rotation beyond a certain angle is prevented by a stopper 15a protruding from a.

In the above configuration, the drive-side magnet 14a and the driven-side magnet 13a attract each other with their different polarities facing each other, and the magnetic force allows them to rotate together. Therefore, when the motor 9a is rotated at a constant speed counterclockwise in FIG. 6, the drive side magnet 14a
rotates, and guided by this, the driven side magnet 13a and the ball striking mallet 3a integrated therewith also rotate. and,
Although the ball hammer 3a contacts the stopper 15a and its rotation is blocked, the driving side magnet 14a still continues to rotate, and when the driven side magnet 13a and the driving side magnet 14a are in a state where the same polarity is opposite to each other, both of them The repulsive force becomes maximum, and the driven side magnet 13a rotates vigorously clockwise in the figure in search of a stable position, and the driving side magnet 14a and the driven side magnet 13a have mutual attractive force at the position where the magnets of different polarities face each other. It reaches the maximum and stops. At this time, the pachinko ball at the launch position of the launch rail 2a is struck by the tip of the ball hammer 3a and launched.

Therefore, the adjustment of the ball hitting force in such a ball launching device is performed by the driving side magnet 14a and the driven side magnet 13.
This is done by changing the magnetic force of a. Specifically, a shield plate 16 made of a magnetic material is fixed to the shaft 6a' of the handle 6a between the magnets 13a and 14a.
a to partially block the magnetic force between both magnets 13a and 14a, and adjust the repulsive force of both magnets to create a ball hammer 3a.
This changes the hitting force of the ball.

[Problems to be Solved by the Invention] According to such prior art inventions, the structure is simple and can be installed in a small space, and there are no parts that come into physical contact during firing. There is no deformation or wear, and the above problems (a) and (c) can be solved.

However, when the applicant repeated the test, the shield plate 16a was strongly influenced by the change in the magnetic field and moved when the batting mallet 3a hit the stopper 15a and was reversed.
The force added to a was insufficient to achieve the intended purpose.

Furthermore, due to the repeated attraction and repulsion between the driving side magnet 14a and the driven side magnet 13a, an axial load is constantly applied to the output shaft 9a' of the motor 9a, due to the characteristics of the motor 9a. Since it is weak against such axial loads, it has had the problem of poor durability.

[Means for Solving the Problems] Therefore, the present invention has an arrangement in which an even number of divided magnet pieces 1, 1... are arranged such that their magnetic poles face each other toward the center, and their N and S poles are arranged alternately. an outer ring 2 connected in an annular manner, and magnet pieces 1, 1 of the outer ring 2;
The same number of magnet pieces 3, 3... are formed into a cylindrical shape with a diameter slightly smaller than the inner diameter of the outer ring 2, and the magnetic poles of the magnet pieces 3, 3... face each other in the circumferential direction, and the N.
An inner ring 4 in which S poles are arranged alternately, the outer ring 2 and the inner ring 4 are rotatable centroidally and independently of each other, and a constant gap S is placed in the outer ring 2. With the inner ring 4 facing, the magnetic poles of the magnet pieces 1, 1... of the outer ring 2 and the magnetic poles of the magnet pieces 3, 3... of the inner ring 4 are made to face each other, and a cylindrical shape is formed in the gap S between the outer ring 2 and the inner ring 4. A ball hammer 6 for hitting pachinko balls is fixed to one of the outer ring 2 and the inner ring 4 (for example, the outer ring 2), and the other ring (for example, the inner ring 4) faces the shield member 5 so as to be movable forward and backward. ) is connected to the output shaft 8 of the motor 7, and furthermore, the batting mallet 6 is configured so that its rotation is prevented by a stopper 10 protruding from the front frame 9 at a predetermined position apart from the pachinko ball launch position. The present invention provides a batted ball launching device A.

[Operation] The outer ring and the inner ring 4 are attracted to each other with their different polarities facing each other, and the magnetic force allows them to rotate together. Therefore, when the motor 7 is rotated at a constant speed counterclockwise in FIG. 1, the inner ring 4 rotates, and the outer ring 2 and the ball striking mallet 6 integrated therewith are also rotated as a result of this rotation. Although the ball hammer 6 comes into contact with the stopper 10 and its rotation is blocked, the inner ring 4 still continues to rotate, and when the outer ring 2 and the inner ring 4 are in a state where the same polarity is opposite to each other, there is a repulsion between the two. The force reaches its maximum, and the outer ring 2 rotates vigorously in the clockwise direction in the figure in search of a stable position, and when the magnets of the inner ring 4 and outer ring 2 face each other with different polarities, their mutual attraction becomes maximum and they stop. . At this time, the pachinko ball at the launch position of the launch rail 34 is struck by the tip of the ball mallet 6 and launched.

Therefore, the magnetic force of the magnet pieces 1 and 3 of the outer ring 2 and the inner ring 4 is blocked by the cylindrical shield member 5 facing the gap S of the outer ring 2 and the inner ring 4, and the gap S of the shield member 5 is By changing the depth at which the ball enters the ball, the magnetic force is adjusted, the repulsive force is adjusted, and the hitting force of the ball hitting mallet 6 is changed.

[Example] An example of the present invention will be described below based on the drawings.

The outer ring 2 is formed into a ring shape by fixing magnet pieces 1, 1, . The magnet pieces 1, 1, . . . are arranged so that their magnetic poles face toward the center of the outer ring, and their N and S poles alternate.

The inner ring 4 has substantially the same configuration as the outer ring 2,
Six divided magnet pieces 3, 3... are fixed on a substrate 13 and connected in a ring shape, and the magnetic poles are arranged alternately and facing in the circumferential direction, and the outer diameter is the same as the inner diameter of the outer ring 2. Formed slightly smaller.

The outer ring 2 is rotatably supported on a shaft 14 supported by the front frame 9. On the other hand, the inner ring 4 is connected to an output shaft 8 of a motor 7 installed on a mounting plate 16 fixed to the back surface of the game board 15, and both magnet pieces 1, 1, . . . It is possible to rotate concentrically with the outer ring 2 and independently of the outer ring 2 with the magnetic poles 3, 3, . . . facing each other.

The shield member 5 has a cylindrical cup shape with a diameter located between the inner diameter of the outer ring 2 and the outer diameter of the inner ring 4, and is formed of a magnetic material such as iron in order to exhibit the shielding effect of a magnet. The shield member 5 has a through hole 17 in the center, into which the output shaft 8 of the motor 7 is loosely inserted, and two pins 18, 18 protruding from the front surface of the motor 7 are inserted into the through holes 19, 19. It is supported non-rotatably and slidably in the axial direction. Further, the shield member 5 has a spring 20 interposed between it and the motor 7 so that its side wall 5' always faces the gap S between the outer ring 2 and the inner ring 4. In addition,
At the tips of the pins 18, 18 there are retaining rings 21, 2.
1 is fixed to regulate the front position of the shield member 5.

On the other hand, the ball hammer 6 is fixed to the base plate 12 of the outer ring 2, and its rotation range is regulated by a stopper 10 protruding from the front frame 9. In addition, magnets 22 and 23 are fixed to the contact point between the stopper 10 and the ball hammer 6, which are opposed to each other so as to repel each other.
The repulsive forces of the magnets 22 and 23 prevent the ball 0 and the ball hammer 6 from actually coming into direct contact.

As mentioned above, the action of the ball launcher A configured in this way is that initially the outer ring 2 and the inner ring 4 rotate together due to the magnetic action, and after the ball hammer 6 is prevented from rotating by the stopper 10, the ball launcher A rotates as a unit due to the magnetic action of the outer ring 2 and the inner ring 4. The repulsion of the ball causes it to flip and fire the pachinko ball.

Therefore, the adjustment of the batting force is performed by using the seal member 5.
This is done by blocking part of the magnetic force by changing the depth of the magnetic field, and the means for adjusting this will be explained next.

A handle 24 is fixed to the front side of the front frame 9, and a pressing pin 25 is made to protrude from the handle 24 to the back side of the front frame 9, and the tip of this pressing pin 25 hits an arm plate 26 extending from the shield member 5. are in contact with each other. The handle 24 has a grip base 27 fixed to the front frame 9.
and an operation plate 29 which is sandwiched between the grip base 27 and rotatably supported by a central shaft 28, and the operation plate 29 is always urged to rotate in one direction by a coil spring 30. On the other hand, the pressing pin 25 is slidably inserted into the cylindrical portion 31 of the handle 24.
Its base end 25' is pressed against the side surface of the operation plate 29 by the action of a spring 32. Further, an inclined protrusion 33 is provided on the surface of the operation plate 29 that comes into contact with the press pin 25 so as to gradually become higher on the trajectory that the press pin 25 comes into contact with when the operation plate 29 is rotated. Therefore, when the player rotates the operation plate 29, the inclined protrusion 33 moves while contacting the base end 25' of the pressing pin 25 as shown by the chain line in FIG. The arm plate 26 is pressed against the spring 20 and the shield member 5
is retreated from between the outer ring 2 and the inner ring 4. Furthermore, when the player releases his/her hand from the operation plate 29, the operation plate 29 moves back due to the coil spring 30, the pressing pin 25 moves back due to the action of the spring 32, and the shield member 5 moves back due to the action of the spring 20. Move back.

[Effects of the Invention] According to the present invention configured as described above, the force generated by the attraction and repulsion between the outer ring 2 and the inner ring 4 acts in the direction of rotating the output shaft 8 of the motor. 7, which is strong against loads in the rotational direction, and its durability is improved compared to conventional destination technologies.

In addition, since the shield member 5 surrounds the entire circumference of the inner ring 4, it is stable in the magnetic field.
Even in response to sudden changes in the magnetic field, there is no unidirectional attraction force. Therefore, the player can comfortably play games for a long time without applying any force to the handle 24.

Since the inner ring 4 is housed inside the outer ring 2, the width of the magnet is thinner, which allows the entire device to be made thinner and more compact than the conventional technology. It has the following effects.

[Brief explanation of drawings]

The figures show one embodiment of the present invention, in which Fig. 1 is a perspective view, Fig. 2 is an exploded perspective view of the launcher, Fig. 3 is a front view, and Fig. 4 is a cross-sectional view taken along the line - - of Fig. 3. , 5 and 6 are perspective views showing conventional examples. 1, 1... Magnet piece, 2... Outer ring, 3, 3...
... Magnet piece, 4 ... Inner ring, 5 ... Shield member, 6 ... Ball hammer, 7 ... Motor, 8 ... Output shaft, S ... Gap, A ... Ball launcher.

Claims (1)

[Scope of Claims] 1. An outer ring in which an even number of divided magnet pieces are connected in an annular manner, with their magnetic poles facing each other toward the center, and with their N and S poles arranged alternately; and the outer ring. It is formed into a cylindrical shape with a diameter slightly smaller than the inner diameter of the outer ring, using the same number of magnet pieces as the magnet pieces.
an inner ring in which the magnetic poles of the magnet pieces face each other in the circumferential direction and the N and S poles thereof are arranged alternately, and the outer ring and the inner ring are rotatable concentrically and independently of each other; Furthermore, the inner ring is faced with a certain gap inside the outer ring, and the magnetic poles of the magnet pieces of the outer ring and the magnetic poles of the magnet pieces of the inner ring are made to face each other, and a cylindrical shield member is placed in the gap between the outer ring and the inner ring. In addition to allowing the ball to move forward and backward, a ball hammer for hitting pachinko balls is fixed to either the outer ring or the inner ring, and the output shaft of a motor is connected to the other ring. 1. A ball firing device for an electric pachinko machine, characterized in that the ball is prevented from rotating at a predetermined position spaced from the ball.