JPH07227465A - Ball return proofing device for pachinko game machine - Google Patents

Abstract

PURPOSE:To prevent a return ball proofing piece from being deformed by being easily bent in the case of wiping up the surface of a play panel and to easily exchange the return ball proofing piece when it is damaged. CONSTITUTION:Concerning a pachinko game machine for which an outer rail 2 and an inner rail 3 linked to this outer rail are helically laid on the front surface of a play panel 1 and an exit part 4 for discharging jetted balls is formed on the upper end inside of the inner rail 3, a case member 7 is fixed on the upper end outside of the inner rail 3 and a return ball proofing element 8 made of a synthetic resin to hardly generate elastic deformation and inclined/ energized so that a top end part protruding from an opening 12 can always suitably block the exit part 4 with an energizing means is axially mounted at a case member 7 so as to be exchanged. Then, the return ball proofing element 8 is inclined by the collision of the discharged ball, the exit part 4 is opened, and the discharged ball is passed without any trouble. After the passage, this return ball proofing element is recovered at its original position so as to prevent the jetted ball from being returned by reverse flying.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a ball return prevention device for a pachinko machine which prevents a shot ball from returning to the hitting ball launching portion side.

[0002]

2. Description of the Related Art Conventionally, in a launch ball guide rail laid on the front of a game board of a pachinko machine, on the outer side of the upper end of the inner rail,
For example, as disclosed in Japanese Utility Model Publication No. 3-30138, a ball return prevention device is attached in order to prevent the launch ball from returning to the hitting ball launching unit side in the reverse flight due to the repulsion of an obstacle nail provided on the game board surface. There is.

As shown in FIG. 4, the ball return preventing device comprises an inner rail 101 laid on the front of the game board 100, and a tongue piece 102 with its upper end facing upward fixed to the upper end of the inner rail 101. The piece 102 has its upper end set so that the distance from the outer rail 103 is smaller than the diameter of the pachinko ball and larger than the radius of the pachinko ball, and is made of rubber or an extremely thin metal having elasticity. .

By the way, in the pachinko hall, since the game board 100 surface is soiled by dusts attached to cigarettes and hit balls, etc., the board surface 100 of each pachinko machine is wiped with a cotton swab or the like after the end of work, and furthermore, it is regularly cleaned. The game board 100 is removed from each pachinko machine, and the surface of each game board 100 is cleaned by rubbing it with a brush using water and detergent.

[0005]

However, since the tongue piece 102 is formed of an elastic body, the game board 1
When the cotton swab or brush hits during wiping or cleaning of the No. 00 surface, it bends and the set distance between the upper end of the No. 00 surface and the outer rail 103 is not only misaligned, but also deforms to perform the original function of preventing ball return. There was a fatal issue of disappearing. Further, since the tongue piece 102 is fixed to the inner rail 101, it is not easy to replace the tongue piece 102, and there is a problem that a large-scale work such as replacement of the inner rail 101 is forced. Therefore, the present invention has been made in view of the above problems, and does not deteriorate the original function without being easily deformed, and moreover, even if the return ball prevention piece is damaged, the ball return of a pachinko machine can be easily replaced. The purpose is to provide a protection device.

[0006]

In order to achieve the above object, a ball return prevention device for a pachinko machine according to the present invention has an outer rail and an inner rail connected to the outer rail spirally laid on the front surface of a game board, In a pachinko machine provided with an outlet for discharging a shot ball inside the upper end of the inner rail, a case member is fixed to the upper end outer side of the inner rail, and the case member is formed of a synthetic resin that does not easily elastically deform, Further, a return ball preventing piece whose tip portion protruding from the opening is tilted and biased so as to always block the outlet portion by an appropriate biasing member is exchangeably mounted, and tilted by the collision of the launch ball, and the outlet portion is tilted. Is opened to allow the launch ball to pass through without any hindrance, and after passing, it is configured to return to its original position to prevent the launch ball from returning due to reverse flight.

[0007]

[Function] Since the ball return prevention device for preventing the return of the launch ball is made of a synthetic resin that is unlikely to elastically deform, it may be bent or deformed even if it is rubbed by a brush when cleaning the game board surface. The shape is retained as it is.
The ball return preventing piece is axially mounted in the case portion at its base end side, and is appropriately tilted and biased by a biasing means so that its tip always faces upward, and is tilted by the launch ball to open the outlet portion. Then, the launch ball is passed without any hindrance, and after the launch ball has passed, it is forcibly returned to the original state and the return of the launch ball due to the reverse flight is prevented. Further, even if the ball return prevention piece is damaged, only the ball return prevention piece can be easily replaced.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a ball returning prevention device for a pachinko machine according to the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of the ball return prevention device, FIG. 2 is an exploded perspective view, and FIG. 3 is a front view showing the same usage state. In the figure, 1 is a game board,
An outer rail 2 and an inner rail 3 connected to the outer rail 2 are spirally laid on the front surface of the game board 1, and an outlet portion 4 through which a launch ball is discharged is provided inside the upper end of the inner rail 3. Also, 5,
Denoted at 5 are obstacle nails that are often planted on one surface of the game board. Then, a ball return prevention device 6 is attached to the outside of the upper end of the inner rail 3.

The ball return prevention device 6 is mainly composed of a case member 7 and a return ball prevention piece 8 axially mounted in the case member 7. The case member 7 is an elliptic cylindrical standing wall 10 having a front end opened on the front surface of a mounting substrate 9 attached to the game board 1.
Is provided upright, and a hollow accommodation portion 11 is formed inside thereof, and an opening 12 continuous with the accommodation portion 11 is provided in an upper portion of the standing wall 10. Further, the opening 1 is provided in the accommodation portion 11.
A support shaft 13 is provided upright in the vicinity of 2, and a holding shaft 15 provided with a screw hole 14 is provided upright on the other side. The holding shaft 15 is a standing wall 1
The inner surface of the shaft 0 and the supporting wall 16 are connected to each other, and a ridge 17 is provided on the supporting shaft 13 side.

The return ball prevention piece 8 is formed of a synthetic resin which is unlikely to elastically deform, and has a blocking piece portion 19 protruding from the base portion 18 at an acute angle. And the base 18
By inserting the support shaft 13 into the insertion hole 20 formed in the opening 12, the block piece 19 is tiltably mounted with the blocking piece portion 19 protruding from the opening 12. 21 is from the base end 22 to the spring piece 23
Is a T-shaped spring member having a protruding portion, and the base end portion 22 is formed between the supporting wall 16 and the inner surface of the upright wall 10.
4 and the tip of the spring piece portion 23 is in contact with the surface of the base portion 18 of the return ball prevention piece 8.

At this time, the ridge 17 presses the spring member 21, whereby the return ball prevention piece 8 is always biased so as to tilt to the position shown by the solid line in FIG. The piece 25 abuts on the edge of the opening 12 and is stopped. Reference numeral 26 is a lid for closing the front end of the standing wall 10,
It is fixed by screwing a screw 28 into the screw hole 14 through the through hole 27.

The ball return prevention device 6 has the above-mentioned structure, and the standing wall 10 is brought into contact with the outer side of the upper end of the inner rail 3 for positioning, and the screws 30, 30 are inserted into the screw holes 29. It is attached to the front of the game board 1 as shown in FIG. In this state, the blocking piece portion 19 protruding from the opening 12 closes the tip outlet portion 4 of the inner rail 3 so that its tip faces upward. Moreover, the distance between the tip of the blocking piece 19 and the outer rail 2 is set to be smaller than the diameter of the launch ball and larger than the radial dimension of the launch ball.

Therefore, a launch ball launched from a hitting ball launching portion (not shown) travels along the outer rail 2 and contacts the blocking piece portion 19 of the return ball blocking piece 8 as shown by the chain line in FIG. , The return ball prevention piece 8 is pushed against the bias of the spring member 21 like a chain line and reaches the game section A. Then, after the launch ball passes, the return ball prevention piece 8 is forcibly returned from the chain line in FIG. 3 to the solid line position by the bias of the spring member 21.
As a result, the projecting ball that hits the obstacle nail 5 and rebounds to fly back to the exit portion 4 of the inner rail 3 to return to the exit portion 4 has a blocking piece portion 19.
Since it hits the ball and falls downward, the return to the ball striking unit is completely blocked.

If the return ball prevention piece 8 is inadvertently damaged while wiping the surface of the game board 1, the screw 28 is removed and the lid 26 is removed to remove it from the spindle 13. The return ball prevention piece 8 can be easily replaced, and it is not necessary to remove the screws 30 and 30 one by one and remove the entire ball return prevention device 6 from the game board 1 surface. After the replacement, the cover 26 may be attached again and the screw 28 may be tightened.

[0015]

As described above, in the ball return prevention device for a pachinko machine according to the present invention, the return ball prevention piece for preventing the return of the launch ball is formed of the synthetic resin which is not easily elastically deformed. Even if a cotton swab, a brush or the like hits it during wiping or cleaning, it will not be easily bent or deformed. Further, since the other parts, that is, the spring members are housed in the case member, they are safe and there is no possibility of damage. If the return ball prevention piece is damaged due to strong contact with a brush or the like, only the return ball prevention piece needs to be replaced, and it is not necessary to replace the entire ball return prevention device, which is economical and Work is easy and easy. Further, since it is formed of synthetic resin, not only the return ball preventing piece can be easily formed, but also unified parts can be mass-produced and the mounting position is stable.

[Brief description of drawings]

FIG. 1 is a perspective view of a ball return prevention device according to the present invention.

FIG. 2 is an exploded perspective view of the same.

FIG. 3 is a perspective view showing the same usage state.

FIG. 4 is a front view showing a usage state of a conventional ball return prevention device.

[Explanation of symbols]

 1 Game board 2 Outer rail 3 Inner rail 4 Exit part 7 Case member 8 Return ball prevention piece

Claims (1)

[Claims] 1. A pachinko machine in which an outer rail and an inner rail connected to the outer rail are spirally laid on the front surface of a game board, and an exit portion through which a launch ball is discharged is provided inside the upper end of the inner rail.
A case member is fixed to the outer side of the upper end of the inner rail, and the case member is formed of a synthetic resin that does not easily elastically deform, and the tip portion protruding from the opening always closes the outlet portion by an appropriate biasing means. A return ball prevention piece that is tilted and biased is replaceably mounted on the shaft, tilts due to the collision of the launch ball, opens the outlet, allows the launch ball to pass through without hindrance, and returns to the original position after passing. A ball return prevention device for a pachinko machine, which is characterized by preventing the return of the launch ball by the reverse flight.