JPS63164978A - Hit ball projecting apparatus in electromotive pinball machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

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 rotation of 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. One end of the coil spring 5a is connected to the batting mallet 3a and biased in the firing direction, and the other end of the coil spring 5a is applied to the take-up pulley 7d, which is rotated by the rotation of the handle 6a mounted on the front surface of the front frame 4a. is connected to the coil spring 5a via a wire 8a, and by rotating the handle 6a, the tension of the coil spring 5a is adjusted.
By driving the cam 10a fixed to the output shaft of the motor 9a and engaging the engagement pin 11a of the ball hitting mallet 3a, the ball hitting mallet 3a is rotated to shoot the game ball at the shooting position of the shooting rail 2a. It is designed to explode.

However, the above-mentioned general electric pachinko machine requires (a) a large space for installing a coil spring 5a for biasing the ball hammer 3a, and (b) a mechanical connection between the ball hammer 3a and the handle 6a. Because of this, the vibration when hitting the ball is transmitted to the handle 6a, causing discomfort and fatigue to the player, and (c) the rubber pad 12a that regulates the firing position of the ball hitting mallet 3a is deformed or worn out by the impact when hitting the ball. This has caused problems such as the positional relationship of the batting mallet 3a at the firing position 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 sector-shaped magnet pieces obtained by dividing a circular plate into even numbers. The driven side magnet 13a has a magnetic pole facing the circular flat plate side, and N j
The Tas poles are arranged alternately. 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, and the driving side magnet 14a is placed concentrically with the driven side magnet 13a with a slight spacing therebetween. The two magnets 13a and 14a are placed face to face with each other. Further, the ball hammer 3a is prevented from rotating beyond a certain angle by a stopper 15a protruding from the front frame 4a.

In the above configuration, the driving side magnet 14a and the driven side magnet 1
3a are attracted to each other with their different polarities facing each other, and due to this magnetic force, both can rotate integrally. Therefore, when the motor 9a is rotated at a constant speed counterclockwise in FIG. 6, the drive side magnet 14a rotates, and the driven side magnet 13a and the ball striking mallet 3a integrated therewith are also rotated by being guided by this. Although the ball hammer 3a comes into contact with the stopper 15a and its rotation is blocked, the driving magnet 14a still continues to rotate, and at the time when the driven magnet 13a and the driving magnet 14a are in a state where the same polarity is opposite to each other. The repulsive force between the two becomes maximum, and the driven magnet 13a rotates vigorously clockwise in the figure in search of a stable position, and the driving magnet 14a and the driven magnet 13a
At the position where the magnets of different polarities face each other, their mutual attraction becomes maximum and they stop. 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 ball hitting force in such a ball launching device is adjusted by changing the magnetic forces of the driving side magnet 1'la and the driven side magnet 13a. Specifically, both magnets 13a
, 14a, a shield plate 16a made of a magnetic material fixed to the shaft 6a' of the handle 6a is interposed between the two magnets 13a,
The hitting force of the ball hammer 3a is varied by partially blocking the magnetic force between the two magnets 14a and adjusting the repulsive force between the two magnets.

[Problems to be Solved by the Invention] According to the prior art invention, the structure is simple and can be installed in a small space.

In addition, since there are no parts that come into physical contact during firing, there is no deformation or wear of parts, which eliminates the problems (a) and (c) above. However, at the time when the batting mallet 3a hits the stopper 15a and is reversed, the shield plate 16a is moved under the strong influence of the change in the magnetic field, and as a result, force is applied to the handle 6a, making it impossible to achieve the intended purpose. It was sufficient.

Furthermore, as the driving side magnet 14a repeats attraction and repulsion with the driven side magnet 13a, an axial load is constantly applied to the output shaft 9a' of the remoter 9a, and 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 provides an even number of divided magnet pieces 1゜l...
..., with its magnetic poles facing toward the center.

The outer ring 2 is made up of an outer ring 2 whose N and S poles are arranged alternately and connected in a ring, and the same number of magnet pieces 3, 3... as the magnet pieces 1, 1... of the outer ring 2. It is formed in a cylindrical shape with a diameter slightly smaller than the inner diameter of the magnet piece 3, and has an inner ring 4 in which the magnetic poles of the magnet pieces 3, 3, etc. are opposed in the circumferential direction, and the N and S poles are arranged alternately. The ring 2 and the inner ring 4 are rotatable circularly and independently of each other, and the magnet pieces 1 of the outer ring 2 are arranged so that the inner ring 4 faces the outer ring 2 with a certain gap S. The magnetic poles of the magnet pieces 3, 3,... of the inner ring 4 are made to face each other, and a cylindrical shield member 5 is placed in the gap S between the outer ring 2 and the inner ring 4.
The outer ring 2 and inner ring 4 can be moved forward and backward freely.
A ball mallet 6 for hitting pachinko balls is fixed to one of the rings (for example, the outer ring 2), and an output shaft 8 of a motor 7 is connected to the other ring (for example, the inner ring 4). To provide a batted ball firing device A configured such that its rotation is prevented by a stopper 10 protruding from a front frame 9 at a predetermined position spaced apart from a ball firing position.

[Operation] The outer ring 2 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 is prevented from rotating, 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 faces 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.

Thus, the cylindrical shield member 5 facing the gap S between the outer ring 2 and the inner ring 4 blocks the magnetic force of the magnet pieces 1 and 3 of the outer ring 2 and the inner ring 4.

By changing the depth into which the shield member 5 enters the gap S, the magnetic force is adjusted, the repulsive force is adjusted, and the ball hitting force of the ball hitting mallet 6 is changed.

[Example] An embodiment 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, which are formed by dividing a cylindrical ring into six parts from the center thereof, onto a circular substrate 12. Magnet piece 1.1...
with its magnetic pole facing the center of the outer ring,
And the N and S poles are arranged alternately.

The inner ring 4 has substantially the same configuration as the outer ring 2.

Six divided magnet pieces 3, 3, etc. 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 that of the outer ring. It is formed slightly smaller than the inner diameter of No. 2.

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,
It is possible to rotate concentrically with and independently of the outer ring 2 with the magnetic poles 1, 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 through the through holes 19.19. It is supported non-rotatably and slidably in the axial direction. Also.

The shield member 5 has a spring 20 interposed between it and the motor 7, and its side wall 5' is always connected to the gap S between the outer ring 2 and the inner ring 4.
I am making it happen. Note that there is a retaining ring 21. at the tip of the pin 18.18. ．． 21 is fixed to restrict 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 points between the stopper 10 and the ball hammer 6, which are opposed to each other in directions that repel each other. I try not to come into contact with them.

As described 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.

However, the batting force can be adjusted by blocking a part of the magnetic force by changing the depth of the shield member 5.
Next, the adjustment means will be explained.

A handle 24 is fixed to the front side of the front frame 9, and the handle 2
A pressing pin 25 is made to protrude from 4 to the back side of the front frame 9.

The tip of this pressing pin 25 is in contact with an arm plate 26 extending from the shield member 5. The handle 24 consists of a grip base 27 fixed to the front frame 9 and an operation plate 29 that is sandwiched between the grip bases 27 and rotatably supported by a central shaft 28. The operation plate 29 is always supported by a coil spring 30. It is biased to rotate in one direction. On the other hand, the suppression pin 25 is slidably inserted into the cylindrical portion 31 of the handle 24, and its base end 25' is pressed against the side surface of the operation plate 29 by the action of a spring 32. and.

The operation plate 2 is attached to the surface of the operation plate 29 that comes into contact with the pressing pin 25.
An inclined protrusion 33 that gradually becomes higher is provided on the locus that the press pin 25 comes into contact with when the press pin 9 is rotated. Therefore, when the player rotates the operation plate 29, the inclined protrusion 33 moves while contacting the proximal end 25' of the pressing pin 25 as shown by the chain line in FIG. 4, and pushes out the pressing pin 25. The plate 26 is pressed, and the shield member 5 retreats from between the outer ring 2 and the inner ring 4 against the force of the spring 20. 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 suppression 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 having the above configuration, the outer ring 2
The force generated by the attraction and repulsion of the inner ring 4 acts in the direction of rotating the output shaft 8 of the motor. The durability of perilla is improved.

Further, since the shield member 5 surrounds the entire circumference of the inner ring 4, it is stable in a magnetic field.

Even when a sudden change in the magnetic field occurs, no unidirectional attraction force is applied, and therefore, no force is applied to the handle 24, and the game can be played comfortably for a long time.

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 the drawing]

The figures show one embodiment of the present invention, and FIG. 1 is a perspective view;
Figure 2 is an exploded perspective view of the launcher, Figure 3 is a front view, and Figure 4 is an exploded perspective view of the launcher.
The figure is a sectional view taken along the line X--X in FIG. 3, and FIG. 5.6 is a perspective view showing a conventional example. 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] An outer ring in which an even number of divided magnet pieces are connected in an annular shape with their magnetic poles facing each other toward the center and their N and S poles arranged alternately; The inner ring is formed into a cylindrical shape with a diameter slightly smaller than the inner diameter of the outer ring by the same number of magnet pieces, and the magnetic poles of the magnet pieces are opposed in the circumferential direction, and the N and S poles are arranged alternately. , the outer ring and the inner ring can be rotated concentrically and independently of each other, and the inner ring is faced with a certain gap inside the outer ring so that the magnetic poles of the magnet pieces of the outer ring and the magnets of the inner ring A cylindrical shield member is made to face the gap between the outer ring and the inner ring so that it can move forward and backward, and a ball hammer for hitting pachinko balls is fixed to either the outer ring or the inner ring. An output shaft of a motor is connected to the other ring, and the batting mallet is configured such that its rotation is prevented at a predetermined position spaced from the pachinko ball launching position. Device.