JPH0796053B2 - Ball device for pachinko machines - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a ball device for a pachinko machine that utilizes the repulsive force of a magnet.

(Prior Art) A ball-ball device for a pachinko machine uses a cam driven by a motor to pull down the ball-hammer, and when the ball-cam is disengaged from the cam, the spring tension is used to rapidly raise the ball-hammer. It is usual that the ball is made to perform a ball movement. However, such a conventional ball-ball device cannot avoid variations in ball flight due to surging, buckling, etc. peculiar to springs, and also cannot avoid deterioration of spring quality due to long-term use. . Further, in such a conventional ball hitting device, since the strength of the hit ball is controlled by adjusting the tension of the spring by the dial operation, there is a drawback that the vibration of the hit ball is transmitted to the dial through the wire or the gear.

Therefore, recently, as a new ball-ball device, a system in which a ball hammer is electrically driven by a rotary solenoid has been invented, but a lamp, a motor, which operates at the time of winning a prize,
If a voltage drop occurs due to a change in the load of the solenoid,
There was a drawback that the strength of the hit ball became unstable due to the change in the ball force.

Furthermore, recently, in addition to mounting a permanent magnet on the mallet shaft of a bullet mallet, a permanent magnet with adjustable ball force that can rotate in conjunction with the dial is mounted on the board side to repel the mutual force of these permanent magnets. It is also proposed to use the ball to make a ball movement. However, this ballistic device has the drawback that the repulsive force between the magnets is directly transmitted to the dial and gives a feeling of weight, and it is difficult to obtain the positional accuracy of the permanent magnet for adjusting the ballistic force when assembling the ballistic device. was there.

(Problems to be Solved by the Invention) The present invention solves the conventional problems as described above, can always stabilize the strength of a hit ball, and can transmit the vibration and the feeling of weight of the hit ball to the dial. It was completed to provide a ballistic device for no new pachinko machine.

(Means for Solving the Problem) According to the present invention made to solve the above problems, a semicircular permanent magnet is fixed to the substrate side of a ball-striping device by facing both ends with different poles. , A permanent magnet oscillating within a range in which the middle portion does not reach the different joints of the poles of the permanent magnet on the mallet shaft side of the ball hammer which is intermittently rotated in the backward direction by the motor. And a magnetic shield plate rotated by a dial operation between these permanent magnets.

(Example) Hereinafter, the present invention will be described in more detail with reference to the illustrated examples.

In FIGS. 1 to 3, (1) is a substrate of a ball device,
(2) is a mallet shaft rotatably mounted on the bearing portion of the substrate (1), and (3) is a ball hammer which is integrally mounted on the mallet shaft (2). The maximum swing angle of the ball hammer (3) is restricted by the stoppers (4) and (5) attached to the substrate (1), and the final retreat angle is a cam for ball (10) driven by a motor. Is determined by the amount by which the cam follower (6) of the mallet shaft (2) is displaced.

(7) and (7) are two semi-circular permanent magnets fixed to the substrate (1) side around the mallet shaft (2). In this embodiment, both end portions are provided as shown in FIG. They are N pole and S pole respectively. Reference numeral (8) is an arc-shaped permanent magnet fixed to the flange portion (9) at the tip of the ball hammer (3). The permanent magnet (8) faces the permanent magnet (7) on the side of the substrate (1) described above with a constant gap, and the permanent magnets (7) and (7) have intermediate poles at different poles. It is mounted so as to swing within the range where the parts do not reach. This swing range is equal to the maximum deflection angle of the ball hammer (3), and the permanent magnet (8) is
When the maximum deflection angle is reached, the position shown by the solid line in FIG. 4 is taken, and the N pole of the permanent magnet (7) on the substrate (1) side and the S pole of the permanent magnet (8) are partially overlapped. But
When the bullet mallet (3) is at the final receding angle, the S pole of the permanent magnet (7) on the substrate (1) side and the S pole of the permanent magnet (8) overlapped as shown by the chain line in FIG. It is configured to be in a state.

In the space between the permanent magnet (7) on the side of the substrate (1) and the permanent magnet (8) on the side of the mallet shaft (2), a magnetic blocking plate made of a material having a property of blocking magnetism such as iron. (11) is provided. The magnetic shield plate (11) of the embodiment is a semicircular plate, and is supported around the mallet shaft (2) so as to be rotatable independently of it. Further, (12) is a dial for adjusting the elastic force, and when the dial (12) is rotated, the magnetic shutoff plate (11) is placed around the mallet shaft (2) via the clutch (13) and the belt (14). It has a rotating structure. The position of the magnetic blocking plate (11) can be changed by changing the meshing position of the clutch (13).

(Operation) In the ball striking device of the pachinko machine of the present invention configured as described above, the cam (10) for the ball is driven by the motor to forcibly retract the ball hammer (3) as shown in FIG. When it is rotated in the direction, the repulsive force acts between the permanent magnet (7) on the substrate (1) side and the permanent magnet (8) on the mallet shaft (2) side facing the permanent magnet (7). When the cam for ball (10) further rotates from this state and disengages from the cam follower (6), the permanent magnet (8) on the mallet shaft (2) side is repulsed by the above-mentioned repulsive force, and the solid line in FIG. It will rotate rapidly to the position and perform a ball movement. At this time, since the intermediate portion of the permanent magnet (8) does not reach the joint of different poles of the permanent magnets (7) and (7), the permanent magnet (8) is not braked.

When the dial (12) is rotated to move the position of the magnetic shield (11) from the solid line position in FIG. 1 to the broken line position,
The poles on which a strong magnetic force acts are gradually covered by the magnetic shield plate (11), which weakens the magnetic force and reduces the repulsive force. Conversely, the magnetic shield plate (11) is moved in the direction of the solid line in FIG. The repulsive force increases when moved to. Thus, dial (1
By 2), the ball force can be adjusted freely. Moreover, since the magnetic shield plate (11) of the present invention is a member independent of the ball hammer (3), the vibration of the hit ball is not transmitted to the dial (12), and the magnetic shield plate (11) itself has a magnetic force. Since the suction force and repulsive force due to do not act, dial (1
There is no feeling of weight in 2) and the dial (1
2) Operation can be performed.

(Effects of the Invention) As is apparent from the above description, the present invention provides a repulsive force generated between the permanent magnet on the substrate side and the permanent magnet on the mallet shaft side when the ball mallet is rotated in the backward direction by the motor. Since it is used to perform the ball movement by using, it is possible to avoid the variation in ball jump caused by surging, buckling, inferior quality of the spring etc. like the conventional one using a spring, It is possible to eliminate chatter vibration when the mallet is returned by the attraction force of the magnetic force. Moreover, since the intermediate portion of the permanent magnet on the mallet shaft side does not reach the different joint of the poles of the permanent magnet on the substrate side, the permanent magnet on the mallet shaft side is not braked by the magnetic force. Further, in the present invention, a magnetic shielding plate rotated by a dial operation is provided between the permanent magnets on the substrate side and the permanent magnets on the mallet shaft side to adjust the ball-ball force. The vibration and the feeling of weight are not transmitted, and since the positions of both permanent magnets can be fixed during the assembly of the apparatus, there is an advantage that the assembly work becomes easy.

Therefore, the present invention has an extremely great practical value as a ball device for a pachinko machine that solves the conventional problems.

[Brief description of drawings]

1 is a partially cutaway front view showing an embodiment of the present invention, FIG. 2 is a partially cutaway plan view, FIG. 3 is a partially cutout left side view, and FIG. 4 is a positional relationship between permanent magnets. FIG. (1): substrate, (2): mallet axis, (3): ball mallet,
(7): Permanent magnet on the substrate side, (8): Permanent magnet on the mallet shaft side.

Claims (1)

[Claims] 1. A semi-circular permanent magnet (7) is fixed to the base (1) side of a ball-ball device by facing both ends with different poles, and intermittently retracted by a motor. On the side of the hammer shaft (2) of the ball hammer (3) that is rotated in the direction of the permanent magnet (7), the permanent magnet (7) swings within a range in which the intermediate portion does not reach the joint of the poles of the permanent magnets (7). A magnet (8) is attached so as to face the permanent magnet (7), and a magnetic shield plate (11) rotated by a dial operation is further provided between the permanent magnets (7) and (8). Bullet ball device for pachinko machines.