JPH0768017A - Ball reversion preventer for pinball game (pachinko) machine - Google Patents

Abstract

PURPOSE:To stabilize the movement of game ball by cutting the tip part of an elastic piece so arranged to let the tip thereof turn upward at the upper end part of a guide rail so that the width thereof becomes narrower toward the tip on the side of a game board surface. CONSTITUTION:A ball reversion prevention means 10 is made up of an elastic piece 11 and a fixing member 12 and arranged on a game board surface abutting the tip of an internal guide rail. The elastic piece 11 is made up of an elastic metal plate which comprises an upper part 11a so cut as to make the width thereof narrower toward the tip thereof and a lower part bent roughly in a shape of U. The upper part 11a is so formed as to be cut in a skew curve toward the tip thereof. A game ball P hitting the cut tip part 11a rolls over a game board surface 1 along a rim 11c cut on the side of the game board surface 1 of the elastic piece 11 pushing the tip part 11a open. Thus, the game ball P rolls stably without moving to a glass surface 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ball return prevention device provided on a game board surface of a ball game machine such as a pachinko machine.

[0002]

2. Description of the Related Art Conventionally, as a ball return prevention device for preventing a pachinko ball fired on a game board surface in a pachinko machine from returning to the launch side, a fair fair 3-30138.
As shown in the publication, a tongue piece made of an elastic material is provided at the upper end portion of the inner guide rail on the game board surface so that the upper end faces upward, and the distance between the upper end and the outer guide rail is pachinko. It is known that the diameter of the ball is smaller than that of the pachinko ball and the radius is larger than that of the ball.
According to this ball return prevention device, the pachinko ball that has been ejected from the launching device and has moved along the guide rail advances by pushing open the tip of the tongue located at the upper end of the guide rail and reaching the upper part of the game board surface. And, the ball that hits the obstacle nail on the game board surface and tries to return to the guide rail is blocked by the tongue and cannot return.

[0003]

However, in the ball game machine, the guide rail is between the game board surface and the glass surface on the front side, and the ball launched from the launching device is partitioned by the two guide rails. In the above ball return prevention device, the pachinko balls are not on the game board surface but on the front side glass when pushing out the tip of the elastic piece attached to the upper end of the guide rail and jumping out. May glide over the surface. For this reason, there is a problem in that the sliding path of the pachinko balls is not stable and it is difficult to drive the pachinko balls on the game board surface as the player desires.

Therefore, an object of the present invention is to provide a ball return prevention device for preventing a game ball, which is hit toward the game board surface, from hitting an obstacle nail and returning to the guide rail after jumping out from the upper end of the guide rail. In a ball game machine, it is to enable the game ball to move stably on the game board surface.

[0005]

According to the present invention, there is provided a ball return prevention device constituted by providing an elastic body piece at an upper end portion of a guide rail of a ball game machine so that a tip of the elastic piece faces upward. The game board surface side of the tip portion of the body piece is characterized by being cut out so that the width becomes narrower toward the tip.

The elastic piece is attached to the upper end portion of the guide rail directly or by using an appropriate fixing means. Instead of this, the elastic piece is attached to or close to the upper end of the guide rail and attached to the game board surface. You may

In another aspect of the present invention, the elastic piece is installed such that the distance between the tip of the elastic piece and the outer guide rail is smaller than the radius of the game ball.

[0008]

Operation: The game ball that has been launched from the launcher and has moved along the guide rail advances by pushing open the tip end of the elastic piece located at the upper end of the guide rail. Here, the elastic piece is notched on the game board surface side so that the width of the tip end is narrowed, so the game ball hitting the tip end of the elastic piece is elastic while pushing the tip end open. Roll on the game board surface along the notched edge on the game board surface side of the body piece. For this reason, the game ball reaches the upper part of the game board surface by rolling without going to the glass surface on the front side. Further, the elastic coefficient of the elastic piece is reduced due to the fact that the distal end of the elastic piece is cut out, and the resistance when the game ball pushes open the distal end of the elastic piece is also reduced. Thus, the sliding trajectory of the game ball becomes stable, and the player can hit the game ball on the game board surface as desired by the shooting operation.

It should be noted that the game ball that has jumped out from the upper end of the guide rail cannot return because it is blocked by the elastic piece even if it hits an obstacle nail on the game board surface and tries to return to the inside of the guide rail.

According to another aspect of the present invention, the return ball hits the tip of the elastic piece by setting the distance between the tip of the elastic piece and the outer guide rail to be smaller than the radius of the game ball. When this happens, the tip of the ball approaches the outer guide rail or abuts it, so that the return ball can be more reliably prevented from entering. In this case, even if the distance between the tip of the elastic piece and the outer guide rail is short, there is little resistance when the game ball pushes the tip of the elastic piece open as described above, so there is no problem.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, on a game board surface 1 of a pachinko game machine, which is an example of a ball game machine in which a ball return prevention device 10 of the present invention is installed, two guide rails 2, 3 inside and outside, A large number of nails 4 and other game equipment are arranged. The ball return prevention device 10 includes an elastic piece 11 and a fixing member 12,
It is arranged on the game board surface 1 in contact with the tip of the inner guide rail 2.

As shown in FIG. 2, the elastic piece 11 has an upper portion 11a which is notched so that its width becomes narrower toward the tip.
And an elastic metal plate having a lower portion 11b bent in a substantially U shape. In the case of this embodiment, the upper portion 11a is cut out in an oblique curved shape toward the tip.

The fixing member 12 is means for abutting the elastic piece 11 on the upper end of the guide rail 2 and fixing it on the game board surface 1. Therefore, the elastic piece 11 has a groove portion 13 into which the lower portion 11b bent into a substantially U shape is fitted in the width direction, and a pair of annular projections 14 and 14 fitted into the annular groove 5 provided on the game board surface 1. And, the screw 7 which penetrates the hole 15 which is provided in the position of these projections 14, the game board surface 1
It is fixed on the game board surface 1 by screwing it into the hole 6 provided in the annular groove 5.

The ball return prevention device 10 is mounted on the game board surface 1 by fixing the fixing member 12 to which the elastic piece 11 is attached at the position where it abuts on the tip of the inner guide rail 2. As shown in FIG. 3, the elastic piece 11 has a distal end portion 11a whose game board surface side is obliquely cut out, so that a gaming ball (in this case, a pachinko ball) P hitting the distal end portion 11a of the elastic body piece P Is a notched edge 11 on the game board surface side of the elastic piece 11 while pushing open its tip 11a.
Roll on the game board surface 1 along c. Therefore, the game ball P rolls without heading to the glass surface 8 on the front side and reaches the upper part of the game board surface 1 in a stable sliding trajectory.

In the embodiment of FIG. 1, the distance d between the outer guide rail 3 and the tip of the elastic piece 11 is set to be smaller than the radius of the pachinko ball P. As a result, when the game ball P that hits the obstacle nail 4 on the game board surface 1 and tries to return to the guide rails 2 and 3 hits the tip end portion 11a of the elastic piece 11, its tip hits the outer guide rail 3. The approach or abutment ensures that the return ball is prevented from entering.

[0016]

As described above, according to the present invention, the game ball is a glass on the front side because the game board surface side of the tip of the elastic body is cut out so that the width becomes narrower toward the tip. There is no gliding on the surface and the trajectory of the gliding is stable. In addition, since the resistance when the game ball pushes the elastic piece open is smaller than that of the conventional one, this also contributes to stabilizing the sliding trajectory of the game ball.

Furthermore, when the ball return prevention device of the present invention is mounted on the game board surface of a ball game machine, the shape of the tip portion of the elastic body piece has the effect of making positioning easy and reliable.

[Brief description of drawings]

FIG. 1 is a plan view showing a part of a game board surface on which a ball return prevention device of an embodiment of the present invention is installed in a pachinko game machine.

FIG. 2 is a perspective view showing a configuration and a mounting method of the ball return prevention device of the embodiment.

FIG. 3 is a cross-sectional view of the game portion showing a state where the game ball is moving along the elastic piece of the ball return prevention device installed on the game board surface.

[Explanation of symbols]

1 ... Game board surface, 2, 3 ... Guide rail, 4 ... Obstacle nail, 5 ...
Annular groove, 6 ... Hole, 7 ... Screw, 8 ... Glass surface, 10 ... Ball return prevention device, 11 ... Elastic piece, 12 ... Fixing member, 13 ...
Grooves, 14 ... Annular protrusions, 15 ... Holes.

Claims (2)

[Claims] Claim: What is claimed is: 1. A ball return prevention device comprising an elastic piece provided on an upper end portion of a guide rail for guiding a game ball on a game board surface of a ball game machine, the tip of which is directed upward. A ball return prevention device for a ball game machine, characterized in that the game board surface side of the tip portion of the elastic body piece is cut out so that the width becomes narrower toward the tip. 2. The ball return prevention device according to claim 1, wherein the elastic piece is installed such that the distance between the tip of the elastic piece and the outer guide rail is smaller than the radius of the game ball.