JP4335892B2 - Ball return prevention device for ball game machines - Google Patents

Description

  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.

  For example, in a pachinko machine, a game ball is launched onto the game board surface by the player's handle operation, and reaches the upper part of the game board surface along the guide rail. At this time, the shot ball may hit the obstacle nail on the game board surface and be bounced back to return to the guide rail in some cases. In order to prevent such ball return, a ball return prevention device is provided at the tip of the guide rail, but the ball return prevention device may be damaged due to impact or the like when the ball hits. It is desirable to be. For this reason, it is general that the ball return prevention device has a structure that can be attached to and detached from the tip of the guide rail with a separate member.

  For example, a mounting holder disposed at the upper end of the guide inner rail (inner guide rail) and the vicinity of the guide outer rail (outer guide rail) mounted on the mounting holder and provided outside the guide inner rail There is disclosed a ball backflow prevention device which is composed of an elastic thin piece extending vertically up to and attached by inserting a positioning boss formed on a mounting holder into a hole of a game board (see Patent Document 1).

  However, in such a ball return prevention device, it is necessary to separately provide an attachment member such as the attachment holder in order to attach the elastic thin piece to the tip of the guide rail. Furthermore, parts such as screws are required for installing the attachment member and attaching the elastic thin piece, and the structure for attaching the elastic thin piece is complicated, and as a result, it is not easy to attach and detach the ball return prevention device.

In addition, as a conventional ball return prevention device, for example, a ball return prevention plate made of an elastic piece is placed on the upper end portion of the inner guide rail on the game board surface so that the upper end faces upward, There is also known a configuration in which the distance from the outer guide rail is set to be smaller than the diameter of the game ball and larger than the radius of the game ball (see Patent Document 2).
According to this ball return prevention device, the mounting structure of the ball return prevention plate is slightly simplified, but there are two guide rails between the game board surface of the pachinko machine and the front glass surface. Since the hit ball moves in the passage partitioned by these two guide rails, in the above ball return prevention device, the game ball pushes the tip of the elastic piece attached to the upper end of the guide rail. When opening and jumping out, it may slide on the front glass instead of the game board. For this reason, the sliding trajectory of the game ball is not stable, and it is difficult to drive the game ball onto the game board surface as desired by the player.
JP-A-5-177033 No. 3-30138

  Therefore, the object of the present invention is less in the ball return prevention device that prevents the game ball launched toward the game board surface of the ball game machine from jumping out from the upper end of the guide rail and then returning to the guide rail. It is to be able to easily and reliably perform the attachment and detachment and replacement of the ball return prevention plate by using parts and a simple structure.

  Another object is to provide a ball return prevention device that enables a game ball that has jumped out from the upper end of a guide rail to stably move on the game board surface.

  A first aspect of the present invention includes a guide rail for guiding a game ball on a game board surface of a bullet ball game machine, and an elastic piece provided at an upper end portion of the guide rail so that a tip is directed upward. In the ball return prevention device, the guide rail has a branch portion in which the upper end portion branches and extends, and a recess is formed between the upper end portion and the branch portion, so that the base end of the elastic piece The part is formed so as to fit in the recess.

  In the second aspect of the present invention, the shape of the recess is formed in a substantially U shape, and the base end portion of the elastic body piece is elastically deformed into a substantially U shape and is fitted in the recess. It is preferable.

  In the third aspect of the present invention, it is preferable that the distal end portion of the branch portion is close to the guide rail so that the shape of the concave portion tapers from the bottom portion toward the opening portion.

  In the fourth aspect of the present invention, the branch portion is formed with a folded portion projecting substantially parallel to the game board surface on the concave portion side, and the base end portion of the elastic piece is formed by the folded portion. It is preferable to be sandwiched in the recess.

  5th aspect of this invention WHEREIN: The said branch part has elasticity, and the front-end | tip of the said branch part is screwed on the said game board surface, and when the said branch part is stopped with the said screw, it is the said recessed part. It is preferable that the elastic piece is elastically deformed toward the upper end side together with the base end portion of the elastic piece fitted therein, and can be moved away from the upper end portion when the screw is removed.

  In the sixth aspect of the present invention, the guide rail is preferably formed of a synthetic resin.

  According to the first aspect of the present invention, the elastic body piece has a base end portion fitted into a recess formed between the upper end portion of the guide rail and the branch portion, so that the guide rail is formed on the game board surface. It is attached to the upper end part of this so that the front-end | tip may face upwards. That is, without using a separate member to attach the elastic piece, the elastic piece is mounted on the game board surface by pressing the base end portion of the elastic piece with the upper end portion of the guide rail and the branched portion branched therefrom. Is done. At this time, the tip of the elastic piece is biased toward the outer guide rail.

  Accordingly, the game ball that has been launched from the launching device and moved along the guide rail advances by pushing open the tip of the elastic piece located at the upper end of the guide rail. And even if the game ball jumping out from the tip of the elastic piece hits the obstacle nail on the game board surface and returns to the guide rail, it is blocked by the elastic piece and cannot return.

  As described above, since the elastic body piece is directly attached to the upper end portion of the guide rail without using a separate part, the attachment structure is simple and the elastic body piece can be easily attached and detached.

  According to the second aspect of the present invention, the shape of the recess is formed in a substantially U shape, and the base end portion of the elastic body piece is elastically deformed into a substantially U shape and fitted into the recess. The elastic piece can be attached to the upper end of the guide rail by being sandwiched between the portion and the branch portion.

  According to the third aspect of the present invention, the distal end portion of the branching portion is formed close to the guide rail so that the shape of the concave portion tapers from the bottom portion toward the opening portion. The base end portion of the elastic piece thus formed can be narrowed from the bottom of the recess toward the opening.

  According to the fourth aspect of the present invention, the folded portion is formed on the concave portion side of the branch portion so as to protrude substantially parallel to the game board surface, and the proximal end portion of the elastic body piece is sandwiched in the concave portion by the folded portion. Therefore, the elastic body piece is securely mounted on the game board surface without coming off the glass plate surface side of the front of the ball game machine.

  According to the fifth aspect of the present invention, the base portion of the elastic piece fitted into the recess when the branch portion is elastic and the tip of the branch portion is screwed onto the game board surface At the same time, it is elastically deformed to the upper end side, and can be moved away from the upper end when the screw is removed. Thereby, the branch portion can be separated from the upper end portion of the guide rail and the recess can be expanded by the elasticity of the branch portion itself. In addition, when attaching the elastic body piece, after inserting the base end portion of the elastic body piece into the recessed portion which is enlarged by separating the branch portion from the upper end portion of the guide rail as described above, the distal end portion of the branch portion is played with a screw. Since it suffices to fix it on the board surface, it is possible to attach the elastic body piece to the recess without requiring a separate attachment member in order to attach the elastic body piece. Therefore, for example, when replacing a damaged elastic piece, the elastic piece can be removed simply by removing the screw from the game board surface, and a new elastic piece is fitted into the recess, and the tip of the branch portion is screwed. What is necessary is just to fix, and the operation | work is performed easily.

  According to the sixth aspect of the present invention, since the guide rail is formed of synthetic resin, the guide rail can be easily formed.

  According to the ball return prevention device of the ball game machine of the present invention, the elastic body piece is directly attached to the upper end portion of the guide rail without using a separate part. Easy to attach and detach.

  FIG. 1 shows a game board surface of a pachinko game machine as an example of a ball game machine in which the ball return prevention device of the present invention is installed. On the game board surface 1, arcuate guide rails 2 and 3 are arranged on the left side of the game board 1, and a number of nails (not shown) and other game equipment are arranged. The ball return prevention device 10 according to the embodiment is configured by mounting an elastic body piece 11 on the upper end portion of the inner guide rail 2 at a portion surrounded by a circle A on the game board surface 1 as described later.

  The guide rails 2 and 3 are formed of an elastic material (for example, synthetic resin such as nylon), and a plurality of protrusions that are integrally protruded at a predetermined interval from the lower edge are provided on the game board surface 1. By being fitted into a hole (not shown) provided at a predetermined position above, it is fixed on the game board surface 1.

  During the game, the ball fired by the player's handle operation moves upward along the outer guide rail 3 from the lower end of the game board surface 1 in the figure, and the ball return prevention attached to the upper end of the inner guide rail 2 The elastic piece 11 as a plate is elastically deformed and reaches the upper center of the game board surface 1.

  FIG. 2 is an enlarged view of a portion surrounded by a circle A in FIG.

  A branch portion 2b branched from the middle is integrally formed at the upper end portion 2a of the guide rail 2. The branch portion 2b protrudes rightward from the upper end portion 2a and forms an S shape upward, and a U-shaped recess 2d is formed between the upper end portion 2a and the branch portion 2b. The leading end 2c of the branching portion 2b is formed so as to be close to the leading end 2e of the guide rail 2, and is fixed on the game board surface 1 by screws (screws) 4 as will be described later.

  The elastic body piece 11 as a ball return prevention plate is made of a thin plate member formed of, for example, a stainless steel plate or the like. As shown in FIGS. 4 and 5, the base end portion 11a bent from a base end portion 11b to a front end portion 11b. It is cut out so that the width becomes narrower. At the time of attachment, the base end portion 11a of the elastic piece 11 is fitted into the recess 2d formed between the upper end portion 2a and the branch portion 2b of the guide rail 2 as described above, and the upper end portion 2a The elastic piece 11 is attached to the upper end portion 2a of the guide rail 2 by being sandwiched between the branch portions 2b. At this time, the tip 11b of the elastic piece 11 is urged toward the outer guide rail 3 as shown in FIG. 1, and the distance between the tip 11b and the outer guide rail 3 is the game ball (in this case) It is installed to be smaller than the radius of the game ball. This reliably prevents the return ball from entering.

  Further, as shown in FIG. 3, the end edge of the branch portion 2b of the guide rail 2 is formed as a folded portion 2f that protrudes substantially parallel to the game board surface 1 on the recess 2d side. The folded end 2f holds the base end portion 11a of the elastic piece 11 in the recess 2d, and the elastic piece 11 is attached so as not to come out to the front glass plate 5 (FIG. 7) side.

  In the ball return prevention device 10 of FIG. 2, the elastic body piece 11 attached as described above can be easily removed simply by removing the screw 4 that stops the branch portion 2 b of the guide rail 2. Specifically, as shown in FIG. 4 and FIG. 6, a hole 2g through which the screw 4 penetrates in the vertical direction is provided at the tip 2c of the branch part 2b, and the screw 4 is screwed into the game board surface 1 from the hole 2g. Thus, the branching portion 2b is fixed on the game board surface 1. In other words, in a state where the screw 4 is not stopped on the game board surface 1, the front end portion 2 c of the branch portion 2 b is movable on the game board surface 1 with respect to the upper end portion 2 a of the guide rail 2.

  For this reason, due to the elasticity of the guide rail 2 itself, as shown in FIG. 6, the branch portion 2 b can be separated from the upper end portion 2 a of the guide rail 2 and the concave portion 2 d can be expanded. As a result, the base end portion 11a of the elastic piece 11 fitted in the recess 2d can be easily taken out. Further, when attaching the elastic body piece 11, after inserting the base end portion 11 a of the elastic body piece 11 into the recessed portion 2 d enlarged by separating the branch portion 2 b from the upper end portion 2 a of the guide rail 2 as described above, What is necessary is just to fix the front-end | tip part 2c of 2b on the game board surface 1 with the bis | screw 4.

  According to the above-described configuration, no separate attachment member is required to mount the elastic body piece 11, and the base end portion 11a of the elastic body piece 11 has the branch portion 2b branched as described above. Is attached to the upper end portion 2a of the elastic body piece 11 so that the distal end portion 11b of the elastic piece 11 is close to the outer guide rail 3. Therefore, for example, when replacing the damaged elastic piece 11, the elastic piece 11 can be removed simply by removing the screw 4 from the game board surface 1, and the new elastic piece is fitted into the recess 2d as described above. Thus, the branch portion 2b of the guide rail 2 may be fixed with the screw 4, and the operation is easily performed.

  In the above-described embodiment, the positional relationship of the branch portion 2b with respect to the upper end portion 2a of the guide rail 2 is such that the state shown in FIG. 2 is the natural (no force) position of the branch portion 2b, and the branch portion is located at this position. When 2b is fixed with the screw 4 and the elastic body piece 11 is removed, the screw 4 is pulled out from the game board surface 1 and the branch portion 2b is separated from the upper end portion 2a, so that the position shown in FIG. 6 is set. On the contrary, the state shown in FIG. 6 is set to a natural position, and at this time, the base end portion 11a of the elastic piece 11 is inserted into the recess 2d, and the branch portion 2b is connected to the upper end portion 2a of the guide rail 2. You may make it elastically deform so that it may push in to the side, and you may make it fix with the screw 4. FIG. In this case, if the screw 4 is removed, the branch 2b is separated from the upper end 2a due to the elasticity of the guide rail 2 itself, and the elastic piece 11 can be easily taken out from the recess 2d or inserted into the recess 2d. can do.

  Further, in the above embodiment, the game board surface side of the elastic piece 11 is cut obliquely toward the front end portion 11b. Therefore, as shown in FIG. While pushing open the elastic body piece 11, it rolls on the game board surface 1 along the notched edge 11 c on the game board surface side. Therefore, the game ball P rolls without coming into contact with the surface of the glass plate 5 on the front side, and reaches the upper part of the game board surface 1 while drawing a stable sliding locus.

  Further, in the above embodiment, the distance between the outer guide rail 3 and the tip 11b of the elastic piece 11 is set to be smaller than the radius of the game ball P, so that the obstacle nail (not shown) on the game board surface 1 is shown. When the game ball that is about to return to the guide rails 2 and 3 hits the tip of the elastic piece 11, the tip 11 b approaches or contacts the outer guide rail 3. Is reliably prevented from entering.

  The embodiment of the present embodiment is a ball return prevention device configured by providing an elastic piece as a ball return prevention plate at the upper end of a guide rail of a ball game machine so that the tip thereof faces upward. The guide rail has a concave portion between the upper end portion and a branch portion that branches off from the upper end portion of the guide rail, and the base end portion of the elastic piece is formed so as to fit into the concave portion. And

  In the embodiment of the present embodiment, it is preferable that the tip of the branch portion is screwed onto the game board surface.

  In another embodiment, the edge of the branching portion is formed as a folded portion projecting substantially parallel to the game board surface on the concave portion side, and the proximal end portion of the elastic body piece is sandwiched in the concave portion by the folded portion. It is preferable.

  In still another embodiment, it is preferable that the elastic piece has a shape in which a game board surface side of a tip portion thereof is cut out so that a width becomes narrower toward the tip. The elastic piece is preferably installed such that the distance between the tip and the outer guide rail is smaller than the radius of the game ball.

  The elastic piece is attached to the upper end of the guide rail on the game board surface by fitting the base end of the elastic piece into the recess between the upper end and the branch of the guide rail. That is, without using a separate member to attach the elastic piece, the elastic piece is mounted on the game board surface by pressing the base end portion of the elastic piece with the upper end portion of the guide rail and the branch portion branched from this. Is done. At this time, the tip of the elastic piece is biased toward the outer guide rail.

  Accordingly, the game ball that has been launched from the launching device and moved along the guide rail advances by pushing open the tip of the elastic piece located at the upper end of the guide rail. And even if the game ball jumping out from the tip of the elastic piece hits the obstacle nail on the game board surface and returns to the guide rail, it is blocked by the elastic piece and cannot return.

  As described above, since the elastic body piece is directly attached to the upper end portion of the guide rail without using a separate part, the attachment structure is simple and the elastic body piece can be easily attached and detached.

  According to the embodiment of the present embodiment, the branch portion of the guide rail is fixed on the game board surface by screwing the tip thereof. In other words, the tip of the branch portion can be moved relative to the upper end portion of the guide rail on the game board surface by removing the screw. Therefore, due to the elasticity of the guide rail itself, the branch part can be moved away from the upper end part of the guide rail, and the elastic body piece fitted in the recess between the upper end part of the guide rail and the branch part The proximal end can be easily removed. Moreover, when attaching an elastic body piece, after moving a branch part away from the upper end part of a guide rail, after inserting the base end part of an elastic body piece into the recessed part between them, the front-end | tip of a branch part should just be screwed .

  According to another embodiment, the edge of the branch portion of the guide rail is formed as a folded portion protruding substantially in parallel with the game board surface on the concave portion side, and the folded portion causes the base end portion of the elastic body piece to be formed. Since the elastic body piece is sandwiched in the recess, the elastic piece is securely mounted on the game board surface without coming off the glass plate surface side of the front of the ball game machine.

  According to yet another embodiment, the elastic piece is cut away so that the width of the elastic piece at the tip side of the game board is narrow, so that the elastic coefficient is reduced, and the game ball moves the tip of the elastic piece. Less resistance when pushing open. As a result, the game ball does not slide on the front glass surface and the sliding trajectory is stabilized, so that the player can drive the game ball onto the game board surface as desired by the launch operation.

  Furthermore, when the distance between the tip of the elastic piece and the outer guide rail is set to be smaller than the radius of the game ball, the tip of the elastic piece is located outside when the return ball hits the tip of the elastic piece. Since it approaches or abuts on the guide rail, it is possible to more reliably prevent the return ball 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 no problem because the resistance when the game ball pushes and opens the tip of the elastic piece is small as described above.

  In addition, when the ball return prevention device of the present embodiment is assembled to the game board surface of the ball game machine, it is possible to obtain an effect that positioning is easy and reliable due to the shape of the tip of the elastic piece.

The schematic diagram of the game board surface which installed the example of the present invention in the pachinko game machine. The figure which expands and shows the part enclosed by the circle A of FIG. The figure which shows the outline of the cross section along line III-III of FIG. The perspective view of the ball return prevention apparatus attached to the guide rail on a game board surface. The perspective view of the elastic body piece in the ball return prevention apparatus of FIG. The figure which shows the state which removed the elastic body piece in the ball | bowl return prevention apparatus of an Example. FIG. 3 is a schematic cross-sectional view showing a state in which a game ball moves along an elastic piece of a ball return prevention device installed on a game board surface.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Game board surface, 2 ... Inside guide rail, 2a ... Upper end part of guide rail, 2b ... Branching part, 2c ... Tip part, 2d ... Recessed part, 2e ... End of guide rail, 2f ... Folding part, 2g ... Hole, 3 ... outer guide rails, 4 ... screws, 5 ... glass plate, 10 ... ball return prevention device, 11 ... elastic body piece.

Claims (6)

A guide rail for guiding the game ball on the game board surface of the ball game machine,
In the ball return prevention device comprising an elastic piece provided at the upper end of the guide rail so that the tip faces upward,
The guide rail has a branch portion in which the upper end portion branches and extends, and a direction in which the upper end portion extends between the upper end portion and the branch portion , and a direction in which the upper end portion extends. Forming a recess opened in a direction substantially perpendicular to the game board surface and in the opposite direction ;
The base end portion of the elastic piece is formed so as to fit into the recess ,
The tip portion of the elastic body piece, the game board side, characterized in Rukoto to have a shape formed by cutting to width toward the tip end is narrowed, the ball return preventing apparatus of a pinball game machine. The ball return prevention device according to claim 1,
The shape of the recess is formed in a substantially U shape,
The ball return prevention device for a ball game machine, wherein a base end portion of the elastic piece is elastically deformed into a substantially U shape and is fitted in the recess. In the ball return prevention device according to claim 1 or 2,
A ball return prevention device for a ball game machine, wherein the tip of the branch portion is close to the guide rail so that the shape of the concave portion tapers from the bottom toward the opening. In the ball return prevention apparatus in any one of Claims 1 thru | or 3,
The branch portion is formed with a folded portion projecting substantially parallel to the game board surface on the concave portion side,
A ball return prevention device for a ball game machine, wherein a base end portion of the elastic piece is held in the recess by the folded portion. In the ball return prevention apparatus in any one of Claims 1 thru | or 4,
The branch has elasticity;
The tip of the branch portion is screwed onto the game board surface,
The bifurcated portion is elastically deformed to the upper end side together with the base end portion of the elastic body piece fitted in the recess when the screw is fixed with the screw, and when the screw is removed, A ball return prevention device for a ball game machine, wherein the ball ball game machine can move away from the upper end. In the ball return prevention apparatus in any one of Claims 1 thru | or 5,
A ball return prevention device for a ball game machine, wherein the guide rail is formed of a synthetic resin.

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