JP2018149440A - Game machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a game machine in which behavior of game balls on a resin game board is preferable.SOLUTION: A tightening backlash equivalent to the difference between an inner diameter D3 of a portion holding a game nail 100 in a nail hole 52 and an outer diameter D2 of a holding portion 111 of the game nail 100 is set such that pull out force of the game nail 100 in a resin game board 50 can be suppressed small. Therefore, holding force of the game nail 100 is suppressed smaller than before. Due to the reduction of the holding force, feeling at the time of angle adjustment of the game nail 100 is soft and gives good workability. Further, the behavior of game balls abutting the game nail 100 is close to the behavior of the game balls on a wooden game board and therefore a game machine to which even a skilled player easily becomes familiar can be obtained.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a gaming machine such as a pachinko machine.

  Conventionally, there is a pachinko machine as a representative example of a gaming machine. The pachinko machine has, for example, a game board that forms a game area in which game balls flow down. In the game area, a game ball is paid out when the game ball wins, and the game ball is guided to the prize opening. A number of game nails are provided that form a passage and a passage that leads to the out-out opening without winning the winning opening. A large number of game nails are driven into and fixed to the game board that forms the outer shape of the game board. As this game board, wood such as veneer has been used in the past. Goods are also used. By using such a game board made of transparent resin, it is possible to make a decorative member such as a light emitter provided on the back side of the game board visible to the player, and to expand the installation area of the decorative parts more than before. (For example, refer to Patent Document 1).

JP 2008-161638 A

  However, the holding state of the game nail differs depending on the material of the game board, and the behavior of the game ball tends to be different. For this reason, for players who are accustomed to the behavior of pachinko machine game balls using wooden game boards, there is a possibility that the game balls of pachinko machines using resin game boards may feel uncomfortable. There is a point.

  The present invention has been made in view of the above-mentioned circumstances, and an object thereof is to provide a gaming machine in which the behavior of a game ball on a resin game board is suitable.

In order to solve the above problems, the invention according to claim 1
In a gaming machine comprising a resin game board that forms a game area in which a game ball flows down the front side, and a plurality of game nails provided so as to protrude forward with the front side of the game board facing,
The game nail is formed with a head provided at a protruding end projecting forward, and a length that is narrower than the outer diameter of the head and extending from the front surface of the game board to the back side of the game board. A shaft portion, and the shaft portion is inserted from the front side of the game board into a hole portion formed in advance in the game board and held by the game board,
The shaft portion is provided with a holding portion formed in a predetermined outer diameter that can be held in the hole portion of the game board,
As a tightening allowance corresponding to the difference between the inner diameter formed as the hole portion of the game board and the outer diameter of the holding portion, a plurality of tightening allowances in which the pulling-out force of the game nail is within a range of about 250 N to about 500 N is provided. It is set as the allowance for at least part of the game nail,
The plurality of game nails are held on the game board by a plurality of types of engagement structures having different shapes or inner diameters or outer diameters of at least one of the hole part of the game board or the holding part of the game nail,
A predetermined game nail provided at a portion where the game ball that has entered the game area first contacts is held on the game board by an engagement structure in which a pulling force is reduced compared to some other game nails. It is characterized by being.

  The invention according to claim 2 is the gaming machine according to claim 1, wherein the gaming machine is a pachinko gaming machine.

  ADVANTAGE OF THE INVENTION According to this invention, the game machine with which the behavior of the game ball in a resin game board is suitable can be provided.

It is a perspective view of the pachinko machine in a 1st embodiment. It is a front view of a game board. It is a longitudinal cross-sectional view which shows the fixed state of a game nail. It is the cross-sectional view which showed the two game nails provided above the start winning opening. It is a longitudinal cross-sectional view which shows the fixed state of the game nail in 2nd Embodiment. It is a longitudinal cross-sectional view which shows the fixed state of the game nail in 3rd Embodiment.

  Hereinafter, an embodiment of the present invention will be described with reference to a pachinko gaming machine (hereinafter referred to as a “pachinko machine”) which is a kind of gaming machine. FIG. 1 is a perspective view of a pachinko machine 10 according to the first embodiment of the present invention, and FIG. 2 is a front view of a game board 20 provided in the pachinko machine 10.

  As shown in FIG. 1, the pachinko machine 10 is provided with a window portion 12 in which a transparent glass plate 11 is arranged in a pair at the front and rear at the center portion, and the game ball is placed on the front side through the window portion 12. The game board 20 flowing down is visible from the player. Two lower and upper ball trays 13 and 14 are provided on the lower side of the window 12, and game balls are stored in the ball trays 13 and 14. A launch handle 15 is provided on the right side of the ball trays 13, 14. When the player operates the launch handle 15, the game balls stored in the upper ball tray 13 are placed one by one on the front side of the game board 20. Fired towards.

  As shown in FIG. 2, the game board 20 has a game area 21 formed in an inner portion of which the outer periphery is partitioned into a substantially circular shape. A center decorative member 22 and a plurality of side decorative members 23 are provided on the left and right sides of the center and lower part of the game area 21, and a large number of game nails are provided throughout the game area 21 avoiding the decorative members 22, 23. 100 is provided. In the area where a large number of game nails 100 are provided, there are special benefits for players such as the general winning port 24, the starting winning ports 25 and 26, the variable winning device 27 that opens and closes the winning port opened at the time of big hit, the through gate 28, and the like. The entrance holes to be given are provided, and a winning ball is paid out when a game ball enters the entrance, or a lottery such as a big win is performed. As shown in FIG. 2, the game board 20 includes a game board 50 made of synthetic resin that forms the outer shape of the game board 20, and a large number of game nails 100 are driven from the surface side of the game board 50.

The game board 50 is a plate-like member formed of a transparent resin that holds the game nail 100, and is formed by injection molding a transparent synthetic resin such as a polycarbonate resin or an acrylic resin. The game board 50 does not necessarily need to be formed by injection molding, and a plate-like member formed by extrusion molding may be subjected to router processing to form a through hole or the like to which a decorative member or the like is attached. It is not necessary to form with a single plate-like member, and a plurality of plate-like members may be overlapped. The color of the game board 50 may be colorless and transparent, may be colored and transparent, or may be formed of a colored and opaque synthetic resin that does not have translucency.

  FIG. 3 is a longitudinal sectional view showing a fixed state between the game board 50 and the game nail 100. As shown in FIG. 3, the game nail 100 is attached to the game board 50 so that one end side is held with respect to the game board 50 and protrudes to the front side where the front surface 51 of the game board 50 faces. The side from which the game nail 100 protrudes corresponds to a game area provided on the front side of the game board 20, and the game ball flows down on the front side.

  As shown in FIG. 3, the game nail 100 includes an elongated shaft portion 101, and a tip end portion (protrusion end portion) that protrudes from one end side of the shaft portion 101 toward the front surface 51 side of the game board 50. And a head portion 102 formed thicker than the shaft portion 101. The game nail 100 is made of metal, for example, made of brass, and formed by subjecting a wire material to a forging process such as rolling.

  The shaft portion 101 has a holding portion 111 that is held by the game board 50 at an end opposite to the head portion 102. The holding portion 111 is formed in a screw shape in which two spiral ridges are formed by knurling. The distal end surface 112 on the further distal end side of the holding portion 111 is formed in a hemispherical shape.

  As shown in FIG. 3, the game ball flowing down between the game board 50 and the glass plate 11 is a part of the shaft portion 101 and has a constant cross-sectional shape between the holding portion 111 and the head portion 102. It abuts on the abutting portion 113 formed in a shape. The game nail 100 is attached to the game board 50 with a certain inclination on the upper side. For example, the game nail 100 attached to the game nail 100 from above is attached with an inclination of 5 degrees above the horizontal. The game ball is guided to the 50 side and is configured to easily fall along the front surface 51 of the game board 50.

  The outer diameter D1 of a portion of the shaft portion 101 where the cross-sectional shape including the abutment portion 113 is formed constant is smaller than the outer diameter D2 of the holding portion 111, and is, for example, approximately 1.85 mm. It is assumed to be the outer shape. The portion corresponding to the contact portion 113 is substantially the same as the outer diameter of the wire as the material, and the holding portion 111 is subjected to plastic deformation larger than the contact portion 113 by forging. For this reason, the holding part 111 is harder than the contact part 113 by work hardening. Here, the outer diameter D <b> 2 of the holding portion 111 is an outer diameter at the maximum portion corresponding to the outer peripheral end of the ridge farthest from the axis that is the center of the shaft portion 101.

  As shown in FIG. 3, most of the holding unit 111 is inserted into the thickness of the game board 50 corresponding to the back side of the front surface 51 of the game board 50, and a part of the game board 50 is part of the game board 50. The length is set to protrude forward from the front surface 51. The amount of protrusion from which the holding portion 111 protrudes to the front side of the front surface 51 of the game board 50 is a slight amount, and is approximately 0.3 mm. When a hammer hitting force for the contact of the game ball or angle adjustment is applied to the protruding portion of the game nail 100, a high bending stress is generated at the edge portion of the nail hole 52 provided in the game board 50, and the nail The contact force between the edge portion of the hole 52 and the surface of the game nail 100 is also high. In this case, since the holding portion 111 whose surface is harder than the contact portion 113 or the like is configured to contact the edge portion of the nail hole 52, breakage of the game nail 100 can be prevented. The length of the holding portion 111 along the axial direction is, for example, approximately 4.0 mm, and the protrusion amount from which the game nail 100 protrudes from the front surface 51 of the game board 50 is, for example, approximately 18.5 mm. Yes.

  Before inserting the game nail 100 into the game board 50, a nail hole 52 having a smaller diameter and a circular cross section than the holding portion 111 is drilled in advance, and the game nail 100 is inserted into the nail hole 52. Specifically, the game nail 100 is inserted into the nail hole 52 while the head 102 is pressed and rotated along the screw shape of the holding portion 111 in the nail hole 52.

  The inner diameter D3 previously drilled as the nail hole 52 has a holding force (hereinafter referred to as a pulling force) that opposes the force in the direction of pulling out the game nail 100 from the game board 50 within a range of approximately 250N to approximately 500N. It is set to become. The pulling force is obtained by measuring the force in the direction of pulling out the game nail 100 along the axial direction with the head 102 held by a tool, and measuring the force with which the game nail 100 is pulled out. It is done. This pull-out force varies depending on the tightening margin corresponding to the difference between the inner diameter D3 of the portion holding the game nail 100 in the nail hole 52 and the outer diameter D2 of the holding portion 111 of the game nail 100, and the pull-out force increases as the tightening margin increases. The pulling force decreases when the tightening margin decreases and the tightening margin decreases.

  With respect to the pulling force, a plurality of types of nail holes 52 having different inner diameters D3 are drilled in the game board 50, and the game nails 100 with a fixed outer diameter D2 of the holding portion 111 are inserted and fixed. Was set by measuring. From this measurement result, the allowable dimensions of the outer diameter D2 of the holding portion 111 and the inner diameter D3 of the nail hole 52 are determined.

  As a result of measuring the pull-out force of the game nail 100 with respect to the game nail 100 having the holding portion 111 of 2.08 mm, the nail hole 52 has an inner diameter D3 of 1.84 mm to 1.88 mm (gradual change range). Each time the inner diameter D3 of 52 changed by 0.01 mm, it changed within the range of 30N to 50N. In this gradual change range, the amount of decrease in the pulling force gradually decreased every time the inner diameter D3 of the nail hole 52 decreased by 0.01 mm. On the other hand, when the inner diameter D3 of the nail hole 52 is 1.89 mm as a range (abrupt change range) in which the inner diameter D3 is expanded from 1.88 mm, the pulling force is greatly reduced as compared with the case of 1.88 mm. The pulling force decreased by 60 N or more with respect to a change of 0.01 mm in the inner diameter D3 of the nail hole 52. In the present embodiment, 1.88 mm at which the pulling force is greatly reduced with respect to the change amount of the inner diameter D3 of the nail hole 52 is set as the reference dimension of the inner diameter D3 of the nail hole 52. The pulling force when the inner diameter D3 of the nail hole 52 was 1.88 mm was about 440N.

  The difference in the inner diameter D3 of the nail hole 52 affects the feel when the angle of the game nail 100 is adjusted to a predetermined angle by hitting the head 102 of the game nail 100 with a hammer. The synthetic resin game board 50 is harder than the wooden game board, and the feel of hitting the game nail 100 held in the nail hole 52 is hard in the synthetic resin game board 50, and the wooden game Soft on the board. This difference also affects the behavior of the game ball that comes into contact with the game nail 100. In the case of a wooden game board, the game ball that comes into contact with the game nail is likely to rebound, and in contrast, in the game board 50 made of synthetic resin. Is hard to resist.

  Further, the durability of the game nail 100 against repeated bending also changes depending on the difference in the inner diameter D3 of the nail hole 52. Specifically, a force is applied to the head 102 of the game nail 100 to plastically deform the game nail 100 alternately on one side and the other side parallel to the front surface 51 of the game board 50, for example, the left side and the right side. When the bending deformation accompanied with is caused, the larger the inner diameter D3 of the nail hole 52, that is, the lower the pulling force, the more the number of times the game nail 100 is bent until it breaks, and the higher the durability. Even in the result of repeatedly applying a force to a location corresponding to the contact portion 113 of the game ball and performing a durability test without plastic deformation, the durability increases as the inner diameter D3 of the nail hole 52 increases, that is, the pull-out force decreases. Became high.

The pull-out force of the game nail 100 is about 250 N in the wooden game board, and in this embodiment, the game nail is brought close to the behavior of the game ball on the wooden game board and the feeling when adjusting the game nail 100. The pulling force of 100 is set to be in the range of about 250N to about 500N. As the setting of the pulling force, for example, approximately 250N to approximately 400N is preferable, and approximately 250N to approximately 350N is preferable. However, as the allowable range of the pull-out force is narrowed, the dimensions of the inner diameter D3 of the nail hole 52 and the outer diameter D2 of the holding portion 111 need to be strictly controlled. It is preferable to do.

  FIG. 4 is a diagram schematically showing two game nails 100 provided in the upper part of the upper start winning opening 25. The two game nails 100 are bent in the direction in which the heads 102 are separated from each other. The angle of the two game nails 100 is set by setting the interval between the base portions of the head 102 to a predetermined interval W by inserting a metal gauge 30 having a thin plate shape and set to the interval W. As the predetermined interval W, the width of the head 102 of the game nail 100 is widened from the base side of the game nail 100 so that the game ball can easily enter the start winning opening 25 as viewed from the player. . However, depending on the pulling-out force of the two game nails 100 and the surrounding game nails 100, even if the game nails 100 are arranged at the same arrangement, the same interval, and the same angle, the game balls to the start winning opening 25 Will have different winning probabilities. For players accustomed to conventional pachinko machines, if the probability of winning a prize is low compared to the appearance, it may be aversion to amusement halls and machine manufacturers. The force is preferably set to a low value close to the wooden game board. Accordingly, it is possible to provide a gaming machine in which the behavior of the game ball in contact with the game nail 100 is close to the behavior of the game ball on the wooden game board and is easily familiar to skilled players.

  Thus, in the pachinko machine 10, the holding portions 111 as hard portions whose surfaces are harder than the contact portions 113 in the game nail 100 are positioned on both the front and rear sides with respect to the front surface 51 of the game board 50. For this reason, even if the game nail 100 comes into contact with the edge portion of the nail hole 52 on the front surface 51 of the game board 50, that portion is a harder portion than the contact portion 113. Therefore, breakage of the game nail 100 due to the contact between the edge portion of the nail hole 52 and the game nail 100 can be suppressed, and the adjustment operation of the game nail 100 on the resin game board 50 can be suitably performed.

  Further, the holding portion 111 whose surface is harder than the contact portion 113 is in a state of slightly protruding from the front surface 51 of the game board 50. Therefore, by visually recognizing the boundary position between the holding portion 111 and the shaft portion 101 that is softer than the holding portion 111, it can be easily confirmed whether or not the game nail is in the specified position, and the game nail 100 is in the specified position. Easy to manage. Further, since the game board 50 is transparent, the holding part 111 can be seen through the transparent game board 50, and further, the protruding amount of the holding part 111 protruding forward from the front surface 51 of the game board 50 is small. There is no big difference in appearance between the holding part 111 and the part that has entered the back side from the front surface 51 of the game board 50 completely. In a conventional pachinko machine using a plastic game board, the holding part is positioned on the back side of the front face of the game board, but the appearance does not change from that of the pachinko machine, and it is easy to manage the game nail 100 at a specified position. Can be a machine.

  Further, the pulling force of the game nail in the conventional resin game board is set to a value larger than 500 N corresponding to more than twice the pulling force in the wooden game board. As compared with wooden game boards, the plastic game board has a large change in the pulling force with respect to the change in the tightening allowance. Since the amount of change with respect to the change in the inner diameter is reduced, the tightening allowance is increased to a dimension where the amount of change is reduced, and accordingly, the pulling force of the game nail has a large value.

  On the other hand, in the pachinko machine 10 according to the present invention, the allowance for pulling out the game nail 100 in the resin game board 50 is set low, and the holding force for the game nail 100 is kept low. Due to this decrease in holding power, the feel of adjusting the angle of the game nail 100 is soft and the workability is good, and the behavior of the game ball in contact with the game nail 100 is close to the behavior of the game ball on the wooden game board. The gaming machine can be easily familiar to a player.

Here, instead of the first embodiment described above, the result of the game, such as winning a prize opening or the like, without strict dimensional management so as to set the pull-out force for all the game nails 100 low. Only the pulling force with respect to the game nail 100 (specific game nail 100a) that easily affects the game may be lowered. As shown in FIG. 3, a plurality of specific game nails 100a provided at a specific part 61 such as an upstream side of the winning opening, the vicinity of the entrance of the winning path, or a part where a game ball entering the game area 21 first comes into contact. In the nail hole 52 provided with the inner diameter D3, the median value of the allowable dimension may be set larger than that of the other nail holes 52. That is, the dimensions of the game nail and the nail hole are set so as to have a plurality of types of engagement structures with different tightening allowances, and the nail hole 52 of the specific game nail 100a is 0.01 mm larger or smaller than the standard dimension of 1.88 mm. The general game nail 100b other than the specific game nail 100a has an allowable dimension from minus 0.01 mm to plus 0.03 mm with respect to the reference dimension. Although the difference in average dimension is 0.01 mm, the processing speed can be increased and the management cost can be reduced for the nail hole 52 with an increased allowable dimension, and the angle can be adjusted during manufacturing. With respect to the specific game nail 100a that is easily applied, the functionality can be improved, for example, the durability and the feel of hitting with a hammer can be softened.

  Next, another mode for reducing the pulling force of the specific game nail 100a as compared with the general game nail 100b will be described. FIG. 5 is a longitudinal sectional view showing a fixed state of the game nail 100 on the game board 200 in the second embodiment. The above-described first embodiment and the game nail 100 have the same shape, and the shape of the nail hole is different. Hereinafter, the same components as those in the first embodiment are denoted by the same reference numerals, description thereof will be omitted, and portions different from those in the first embodiment will be described.

  As shown in FIG. 5, the nail hole 202 in the second embodiment is formed in a circular hole shape with a stepped cross section having a large inner diameter D <b> 4 on the front surface 201 side from which the game nail 100 protrudes in the game board 50. The inner diameter D3 is smaller than the inner diameter D4 on the front surface 201 side. The holding portion 111 of the game nail 100 is held by a portion of the inner diameter D3 on the back side. The amount of protrusion of the game nail 100 from the front surface 201 of the game board 200 is set to be the same as the amount of protrusion in the first embodiment, and a part of the holding portion 111 is located on the front side of the front surface 201 of the game board 200. . The stepped nail hole 202 is provided at a position where the specific game nail 100a is disposed, and the general game nail 100b is provided with the nail hole 52 having a constant cross section in the first embodiment. 2 and 3).

  The stepped nail hole 202 is formed so that the inner diameter D3 smaller than the holding portion 111 penetrates the game board 200 before and after the game board 200, and the inner diameter D4 larger than the holding portion 111 is different from that process. It forms in the part which does not penetrate from the front surface 201 side of the board 200 to a back surface. The step of forming the large inner diameter D4 may be formed before or after the inner diameter D3 on the back side.

  The inner diameter D3 of the nail hole 52 of the general game nail 100b is set to the same reference dimension as the inner diameter of the stepped nail hole 202, which is smaller than the reference dimension in the first embodiment, for example, 0.02 mm smaller. Although the pulling force of the game nail 100 is increased by the reduction of the reference dimension, the holding length held by the inner diameter D3 in the axial direction of the holding portion 111 is formed short in the stepped nail hole 202 and is stepped. The pulling force of the specific game nail 100a held in the nail hole 202 is lower than that of the general game nail 100b. By comprising in this way, the internal diameter D3 of the part holding the holding | maintenance part 111 of the general game nail 100b and the specific game nail 100a can be made common, and it can process with the same tool. When machining the inner diameter D3 on the back side of the specific game nail 100a, the tool axis is less likely to be shaken by making the machining speed slower than when machining the inner diameter D3 of the general game nail 100b. A high inner diameter D3 can be formed.

In addition, the holding part 111 for holding the game nail 100 is the game board 2 of the specific game nail 100a.
Even if the game nail 100 is provided with the same protrusion amount, the game ball in the specific game nail 100a becomes easy to bounce, and the behavior of the game ball close to a wooden game board is made of synthetic resin. This can be easily realized by the game board 200.

  Next, a third embodiment will be described. In the third embodiment, the shape of the game nail 100 is different from those of the first embodiment and the second embodiment, and the game board 50 is formed thick. FIG. 6 is a longitudinal sectional view showing a fixed state of the game nail in the third embodiment. Hereinafter, the part different from 1st Embodiment is demonstrated about the fixing structure of the game nail in 3rd Embodiment.

  The game nail 150 according to the third embodiment is provided with a constricted portion 152 having a narrow outer periphery at a portion close to the holding portion 111, and the shaft portion between the head portion 102 and the holding portion 111 does not have a constant cross-sectional shape. The length of the constricted portion 152 is longer than the game nail 100 in the first embodiment. The constricted portion 152 is formed by thinly forging a brass wire, and has a harder surface than the contact portion 113 or the like on which the game ball contacts by work hardening. The constricted portion 152 has the thinnest central portion in the length direction of the shaft portion 151, and both sides thereof are gradually formed thicker, and are formed in a concave shape in an arc shape in a side view. The length of the constricted portion 152 in the axial direction is, for example, 2 mm, and the diameter of the minimum portion is, for example, 1.75 mm. A part of the constricted portion 152 is located so as to protrude 0.3 mm forward from the front surface 301 of the game board 300, and the remaining part is located within the thickness of the game board 300. The game board 300 is formed to be thicker than the game board 50 in the first embodiment, and the holding portion 111 of the game nail 150 is held in the entire area along the axial direction of the shaft portion 101. The inner diameter D3 of the nail hole 302 is the same as the inner diameter D3 of the nail hole 52 in the first embodiment described above.

  By providing the game nail 150 in the third embodiment on the game board 300, the distance between the contact portion 113 and the holding portion 111 with which the game ball abuts is increased compared to the game nail 100 in the first embodiment. The game ball can be easily bounced and the behavior of the game ball close to a wooden game board can be realized by the game board 300 made of synthetic resin.

  In addition, the constricted portion 152 abuts against the edge portion of the nail hole 52 on the front surface 301 of the game board 300, but is a hardened portion hardened as compared with the abutting portion 113, and the portion is formed to be thin. Therefore, the game nail 100 and the edge portion of the nail hole 52 are not easily in contact with each other, and even if they contact, the contact force is reduced, so that the game nail 100 can be prevented from being broken.

  In addition, this invention is not restricted to the said embodiment, For example, you may deform | transform and implement as described below. In this case, each configuration described below may be applied to the above embodiment, or a plurality of configurations described below may be combined and applied to the above embodiment.

  In the first embodiment, the nail hole 52 provided in the game board 50 has a circular cross section. However, it is not always necessary to have a circular cross section. You may form in other shapes, such as a shape. Further, the nail hole 52 is not necessarily configured as a through hole, and may be configured as a non-through hole in which only the front side of the game board 50 is opened and the back side is closed. However, when the game nail 100 breaks, the hole of the inner diameter that holds the holding portion 111 penetrates to the back side so that the game nail 100 can be pushed out and pulled out. Preferably it is. As a result, when the game nail 100 breaks, the inner surface of the nail hole 52 is less likely to be shaved than when the remaining portion of the game nail 100 is pulled out to the surface side, and the game nail 100 when the game nail 100 is replaced with a new game nail is obtained. The holding power against pulling out can be made high.

  Here, the center decoration member 22 in the first embodiment is provided with an opening in the game board 50 and fixed by screwing from the front surface 51 side of the game board 50 from the front side with respect to the opening of the game board 50. It is preferable to be fixed removably. When the broken game nail 100 is pushed out and pulled out to the back side of the game board 50 as described above, a part of the game nail 100 is disposed before and after the game board 50 through the opening of the game board 50. Special tools can be arranged. Specifically, a shaft-like member that can move so as to protrude toward the part located on the back side is provided at a part located on the front side of the tool, and the game nail 100 broken by the member is attached to the game board 50. Extrude from the front side. A game ball path is provided in the game nail 100 provided on or near the start winning opening 25 or in the center decoration member 22 and guided from the upstream side away from the starting winning opening 25 to the portion directly above the starting winning opening 25. In many cases, game nails 100 having a high contact frequency of game balls and having a high influence on the outcome of a game such as a prize are arranged around the center decoration member 22 such as an entrance portion of the passage. The nail needs to be arranged at a specified angle at a specified position so that the game ball is paid out to the player as a prize ball as designed. This type of game nail 100 is highly likely to break, and even if it is a transparent game board with respect to the game nail 100, the front 51 of the game board 50 can be obtained even if a small dedicated tool is provided by providing an opening in the game board 50. When the game nail 100 is pushed out from the side to the back side and replaced with a new game nail, it is possible to maintain a high holding force against the withdrawal of the game nail 100.

  In the third embodiment, the center decoration member 22 may be configured to attach the game nail 150 in the third embodiment to the game board 300 fixed from the front surface 301 side through the opening of the game board 300. In this case, The constricted portion 152 as a hard portion has a smaller cross-sectional area than the contact portion 113, and the game nail 150 is easily broken at the central portion of the constricted portion 152 or at a portion close to the holding portion 111 having a high bending stress. A part on the tip side of the nail 150 tends to remain in the thickness range of the game board 300, that is, in the nail hole 302. When the remaining game nail 150 is pushed out to the back side of the game board 300 and a new game nail 152 is inserted, when the broken game nail 150 is pushed out, the front surface 301 side of the game board 300 on the inner surface of the nail hole 302 remains. Since the game nail 150 is not rubbed at all, the portion is not scraped off, and it is possible to easily increase the holding force against the extraction of the game nail 100 when the game nail is replaced with a new one.

  In each of the above embodiments, the holding portion 111 is configured by two thread shapes protruding toward the outer peripheral surface side, but it is not always necessary to have two thread shapes, and may be one or three or more, If the shape is such that the pulling force is obtained, the cross-sectional shape is not twisted along the axial direction, and a net shape or a striped knurled shape or a large number of protrusions parallel to the axial direction are provided in the circumferential direction. It is good also as a holding | maintenance part which has the cross-sectional shape by which the unevenness | corrugation was provided in the surface.

  In each of the above embodiments, the holding portion 111 and the constricted portion 152 as the hard portion are provided so as to protrude approximately 0.3 mm forward from the front surfaces 51, 201, 301 of the game boards 50, 200, 300. However, it is not always necessary to set the protrusion amount, but it is preferably within a range of about 0.1 mm to 0.5 mm, and preferably within a range of about 0.2 mm to about 0.4 mm. It is. Further, when the game nails 100 and 150 are attached to the game boards 50, 200, and 300 while being tilted upward, the protruding amount of the hard portion is minimized at the upper portion, and thus the minimum portion is the above. It is preferable to set the protruding amount.

In each of the above embodiments, the holding portion 111 and the constricted portion 152 as the hard portion are formed harder than the contact portion by plastic deformation due to processing when forming the outer shape, but are not necessarily formed hard when processing the shape. However, the hard portion may be formed by other methods. For example, the surface may be hardened by a process such as shot peening in which a small-diameter iron ball is collided with the surface to harden the surface, or is positioned forward and backward with respect to the front surface of the game board in the shaft portion of the game nail The surface may be hardened by forming a metal film or layer harder than brass as a base material by vapor deposition or the like. The boundary between the holding portion 111 or the constricted portion 152 as the hard portion and the portion that is not the hard portion can be formed so that the ridge line clearly appears, and the surface color can be changed so that it can be confirmed at a glance. It is preferable that the boundary line can be confirmed by differentiating the position of the boundary between the edge portions of the nail holes 52, 202, 302 on the front side of the game boards 50, 200, 300 and the boundary line. It can be easily confirmed, and the appearance can be improved in quality by overlapping the edge portion with the boundary line. The front surface of the game board while combining the inner diameter of the nail holes 52, 202, 302 and the outer diameter of the holding portion 111 so that the tightening allowance or pullout force is different from the tightening allowance or pullout force in each of the above embodiments. A part of the hard portion may be slightly protruded to the side, and even in this case, the adjustment operation of the game nail on the resin game board can be suitably performed. In addition, a colored sheet-like decorative board (cell board) is placed on the front of the resin game board, or an opaque resin game board is placed inside the nail hole from the front side of the game board. The tip of the inserted game nail may be configured to be invisible, and in this case, it is possible to make it easier to visually recognize a part of the holding portion 111 protruding as a hard portion protruding from the front surface of the game board. It is preferable.

  In each of the above-described embodiments, a part of the holding portion 111 or the constricted portion 152 as the hard portion protrudes forward from the front surface of the game board 50, 200, 300, but this configuration is not necessarily required. By setting the above-described tightening allowance or pull-out force while placing the hard portion completely in the nail holes 52, 202, 302, the behavior of the game ball on the resin game board is suitable. This is preferable.

  The specific part 61 where the specific game nail 100a in each of the above embodiments is provided is not limited to the part in the above embodiment, and may be another part. In this case, the angle of the game nail may be adjusted with a large inclination or a game ball. It is preferable to set, as the specific part, a part that frequently contacts or a part where the game ball contacts at high speed. In addition, regarding the engagement structure in which the game nail and the nail hole, which are the combination of the game nail 100, 150 and the nail hole 52, 202, 302 in each of the above-described embodiments, are engaged with each other as described in the above-described embodiments. May be applied to all game nails provided in one pachinko machine, or two types of engagement structures may be applied to one pachinko machine divided into specific game nails 100a and general game nails 100b. In addition, three or more types of engagement structures may be applied to one pachinko machine.

  You may implement this invention in the pachinko machine etc. of a type different from the said embodiment. For example, it may be implemented as a pachinko machine in which a big hit expectation value is increased until a big hit state is generated several times (for example, two times or three times) including that. Moreover, after a jackpot symbol is displayed, it may be implemented as a pachinko machine that enters a special gaming state on the condition that a ball wins a predetermined area. Moreover, you may employ | adopt as what is called a normal machine without lottery functions, such as jackpot. You may implement as a pachinko machine which will be in a special game state when a ball enters a predetermined winning slot. Moreover, you may implement in the enclosed pachinko machine with which a ball | bowl circulates. Further, in addition to the pachinko machine, the present invention may be implemented as various game machines such as an arrangement ball type pachinko machine and a sparrow ball.

  Hereinafter, the features of the invention group extracted from the above-described embodiment will be described while showing effects and the like as necessary. In the following, for easy understanding, the corresponding configuration in each of the above embodiments is appropriately shown in parentheses, etc., but is not limited to the specific configuration shown in parentheses. In addition, the meanings and examples of terms described in each feature may be applied as the meanings and examples of terms described in other features described in the same wording.

<Feature A group>
Conventionally, there is a pachinko machine as a representative example of a gaming machine. The pachinko machine has, for example, a game board that forms a game area in which game balls flow down. In the game area, a game ball is paid out when the game ball wins, and the game ball is guided to the prize opening. A number of game nails are provided that form a passage and a passage that leads to the out-out opening without winning the winning opening. A large number of game nails are driven and fixed to a game board that forms the outer shape of the game board. As this game board, wood such as veneer has been used in the past, and in recent years, resin board materials or molded products are used. Has also been used. In particular, by using a game board made of transparent resin, it is possible to make a decorative member such as a light emitter provided on the back side of the game board visible to the player, and to expand the installation area of the decorative parts more than before. (For example, refer to JP2008-161638).

  However, game nails driven into resin game boards have different feels to adjust game nails compared to game nails driven into wooden game boards and cannot be adjusted as usual. If you adjust it too much, there is a problem that the game nail breaks.

<Feature A1>
A resin game board (game board 50, 200, 300) from which the game ball flows down the front side, and a game nail (game nail 100, 150) provided so as to protrude forward with the front side of the game board facing. In a gaming machine (pachinko machine 10) equipped with
The game nail continues from the front surface of the game board to the back surface side of the game board with a head (head 102) provided at a protruding end protruding to the front side and an outer diameter smaller than the outer diameter of the head. A shaft portion (shaft portions 101, 151) formed in length, and the shaft from the front side of the game board with respect to holes (nail holes 52, 202, 302) formed in advance in the game board Part is inserted and held on the game board,
In the shaft portion, a holding portion (holding portion 111) formed with a predetermined outer diameter that can be held in the hole portion of the game board,
A contact portion (contact portion 113) that is positioned on the front side of the front surface of the game board and that contacts the game ball;
A part of the shaft portion between the holding portion and the contact portion (neck portion 152), or the holding portion is a hard portion whose surface is harder than the contact portion along the axial direction of the shaft portion. And
In the gaming nail, a part of the hard portion slightly protrudes on the front side with respect to the front surface of the game board, and the hard board is located on both front and rear sides with respect to the front surface of the game board. A gaming machine characterized by being held in

  According to the gaming machine described in the feature A1, the adjustment operation of the game nail on the resin game board can be suitably performed. That is, since the hard part of the game nail is located on both the front and rear sides with respect to the front surface of the game board, even if the game nail may contact the edge part of the hole part on the front surface of the game board, the part is the contact part. It is a harder part. Therefore, breakage of the game nail due to contact between the edge portion of the hole and the game nail can be suppressed, and adjustment of the game nail on the resin game board can be suitably performed.

  In addition, since the hard part protrudes slightly from the front surface of the game board, it is easy to check whether the game nail is in the specified position by visually checking the boundary position between the hard part and the softer part than the hard part. The game nail can be easily managed at the specified position. In the case of a transparent game board, even if a part of the hard part protrudes forward from the front surface of the game board, the amount of protrusion is small, and the entire hard part is less than the front face of the game board. Since the hard part can be seen through even on the back side, there is no big difference in appearance with the hard part completely entering the back side from the front of the game board. Therefore, it is possible to make the game nail easy to manage at a specified position while making the appearance as a game machine equivalent to a conventional game machine using a resin game board, and it is more suitable for the adjustment work of the game nail. Can be done.

Note that the hard part in the feature A1 slightly protrudes may be a small amount of approximately one fifth or less of the length of the hard part along the axial direction of the shaft part. With such a configuration, it is possible to provide a gaming machine that allows easy adjustment of the game ball while maintaining high durability such as fatigue strength of the game nail resulting from the formation of the hard portion.

<Feature A2>
The gaming machine according to claim A1, wherein the gaming nail is held by the gaming board in a state where the hard portion protrudes from the front surface of the gaming board to the front side with a length of 0.5 mm or less. .

<Feature A3>
A fastening allowance corresponding to a difference between an inner diameter formed as a hole portion of the game board and an outer diameter of the holding portion is set in a range from approximately 0.18 mm to approximately 0.22 mm. A gaming machine according to feature A1 or A2.

  According to the gaming machine described in the feature A3, the holding force that opposes the pulling out of the game nail in the resin game board can be kept low. Due to this decrease in holding power, the feel of adjusting the angle of the game nail is soft and workability is good, and the behavior of the game ball in contact with the game nail is close to the behavior of the game ball on the wooden game board, so that the skilled player It is possible to provide a game machine that is easy to get along with.

  In addition, it is more preferable that the tightening allowance in the gaming machine described in the feature A3 is set in a range of approximately 0.19 mm to approximately 0.21 mm. Further, the holding portion in the gaming machine described in the feature A2 has an outer diameter that is approximately 1.1 times to approximately 1.3 times the outer diameter of the contact portion, and an axial length of approximately 1.5 times. It is preferable that the ratio is set to approximately three times.

<Feature B group>
Conventionally, there is a pachinko machine as a representative example of a gaming machine. The pachinko machine has, for example, a game board that forms a game area in which game balls flow down. In the game area, a game ball is paid out when the game ball wins, and the game ball is guided to the prize opening. A number of game nails are provided that form a passage and a passage that leads to the out-out opening without winning the winning opening. A large number of game nails are driven and fixed to a game board that forms the outer shape of the game board. As this game board, wood such as veneer has been used in the past, and in recent years, resin board materials or molded products are used. Has also been used. In particular, by using a game board made of transparent resin, it is possible to make a decorative member such as a light emitter provided on the back side of the game board visible to the player, and to expand the installation area of the decorative parts more than before. (For example, refer to JP2008-161638).

  However, the holding state of the game nail differs depending on the material of the game board, and the behavior of the game ball tends to be different. For this reason, for players who are accustomed to the behavior of pachinko machine game balls using wooden game boards, there is a possibility that the game balls of pachinko machines using resin game boards may feel uncomfortable. There is a point.

<Feature B1>
In a gaming machine comprising a resin game board in which a game ball flows down the front side, and a plurality of game nails provided so as to protrude forward with the front side of the game board facing,
The game nail is formed with a head provided at a protruding end projecting forward, and a length that is narrower than the outer diameter of the head and extending from the front surface of the game board to the back side of the game board. A shaft portion, and the shaft portion is inserted from the front side of the game board into a hole portion formed in advance in the game board and held by the game board,
The shaft portion is provided with a holding portion formed in a predetermined outer diameter that can be held in the hole portion of the game board,
As a tightening margin corresponding to the difference between the inner diameter formed as the hole portion of the game board and the outer diameter of the holding portion, a gradually changing range in which the pulling force of the game nail gradually decreases with respect to the decrease in the tightening margin; The plurality of game nails have a tightening allowance of a predetermined amount or more in the sudden change range out of the sudden change range in which the pull-out force is greatly reduced with respect to the decrease in the tightening allowance as compared with the gradual change range. A gaming machine characterized in that it is set as an allowance for at least a part of the game machine.

<Feature B2>
In a gaming machine comprising a resin game board in which a game ball flows down the front side, and a plurality of game nails provided so as to protrude forward with the front side of the game board facing,
The game nail is formed with a head provided at a protruding end projecting forward, and a length that is narrower than the outer diameter of the head and extending from the front surface of the game board to the back side of the game board. A shaft portion, and the shaft portion is inserted from the front side of the game board into a hole portion formed in advance in the game board and held by the game board,
The shaft portion is provided with a holding portion formed in a predetermined outer diameter that can be held in the hole portion of the game board,
As a tightening allowance corresponding to the difference between the inner diameter formed as the hole portion of the game board and the outer diameter of the holding portion, a plurality of tightening allowances in which the pulling-out force of the game nail is within a range of about 250 N to about 500 N is provided. A gaming machine characterized in that it is set as an allowance for at least part of a game nail.

  According to the gaming machine described in the features B1 and B2, it is possible to provide a gaming machine in which the behavior of the game ball on the resin game board is suitable. In other words, since it is a tightening allowance in which the pulling-out force of the game nail in the resin game board is kept low, the holding force of the game nail is kept lower than before. Due to this decrease in holding power, the feel of adjusting the angle of the game nail is soft and workability is good, and the behavior of the game ball in contact with the game nail is close to the behavior of the game ball on the wooden game board, so that the skilled player It is possible to provide a game machine that is easy to get along with.

<Feature B3>
The plurality of game nails are held on the game board by a plurality of types of engagement structures having different shapes or inner diameters or outer diameters of at least one of the hole part of the game board or the holding part of the game nail. A gaming machine according to the characteristic B1 or B2.

<Feature C1>
In a gaming machine comprising a resin game board in which a game ball flows down the front side, and a plurality of game nails provided so as to protrude forward with the front side of the game board facing,
The game nail is formed with a head provided at a protruding end projecting forward, and a length that is narrower than the outer diameter of the head and extending from the front surface of the game board to the back side of the game board. A shaft portion, and the shaft portion is inserted from the front side of the game board into a hole portion formed in advance in the game board and held by the game board,
In the shaft portion, a holding portion formed in a predetermined outer diameter that can be held in the hole portion of the game board, and
An abutting portion that is positioned on the front side of the front surface of the game board and that contacts the game ball is provided,
The plurality of game nails are held on the game board by a plurality of types of engagement structures having different shapes or inner diameters or outer diameters of at least one of the hole part of the game board or the holding part of the game nail. A featured gaming machine.

  According to the gaming machine described in the feature B3 or C1, only a pulling force with respect to some game nails such as a game nail that is subjected to a large angle adjustment or a game nail that easily influences a winning in a winning opening is reduced. In order to make the adjustment of the game nail and the behavior of the game ball suitable for the other game nails, the pulling force is set high for the other game nails and the structure that emphasizes the manufacturing cost and workability is adopted. Can do.

The “plural types of engagement structures” in the description of the feature B3 or C1 may be a plurality of types of engagement states, or a combination of a plurality of types. As the state of engagement, the size or shape of at least one of the holding portion of the game nail and the hole portion of the game board, or a combination thereof may be different and different combinations.

  Further, in the gaming machine described in the feature B3 or C1, it is preferable that all gaming nails used in the gaming machine are common gaming nails having the same shape and dimensions, and the pulling force is changed depending on the shape of the hole of the gaming board. As the shape of the hole, it is preferable to change the length of the section that holds the holding portion along the axial direction of the game nail, and further, the inner diameter of the hole on the front side of the game board is compared to the back side. A large stepped hole, and a game nail that is held by a small-diameter hole on the back side thereof, and a game nail that is held in a hole that continues to the front side of the game board. It is preferable to provide the gaming machine with which the manufacturing cost and the management cost can be reduced.

  Note that any one of the features described in the features A1 to A3, the features B1 to B3, and the feature C1 may be applied in combination with any one or more features. The basic configuration of the gaming machine to which the above-described features can be applied is shown below.

  Pachinko gaming machine: operation means operated by a player, game ball launching means for launching a game ball based on the operation of the operation means, a ball path for guiding the launched game ball to a predetermined game area, and a game A gaming machine that includes each gaming component arranged in an area, and gives a bonus to a player when a gaming ball passes through a predetermined passing portion of each gaming component.

  As described above, the present invention is suitable for gaming machines such as pachinko machines.

DESCRIPTION OF SYMBOLS 10 ... Pachinko machine, 50, 200, 300 ... Game board, 52, 202, 302 ... Nail hole, 100, 150 ... Game nail, 101, 151 ... Shaft part, 102 ... Head, 111 ... Holding part, 113 ... Contact part, 152 ... Constriction part

Claims (1)

In a gaming machine comprising a resin game board that forms a game area in which a game ball flows down the front side, and a plurality of game nails provided so as to protrude forward with the front side of the game board facing,
The game nail is formed with a head provided at a protruding end projecting forward, and a length that is narrower than the outer diameter of the head and extending from the front surface of the game board to the back side of the game board. A shaft portion, and the shaft portion is inserted from the front side of the game board into a hole portion formed in advance in the game board and held by the game board,
The shaft portion is provided with a holding portion formed in a predetermined outer diameter that can be held in the hole portion of the game board,
As a tightening allowance corresponding to the difference between the inner diameter formed as the hole portion of the game board and the outer diameter of the holding portion, a plurality of tightening allowances in which the pulling-out force of the game nail is within a range of about 250 N to about 500 N is provided. It is set as the allowance for at least part of the game nail,
The plurality of game nails are held on the game board by a plurality of types of engagement structures having different shapes or inner diameters or outer diameters of at least one of the hole part of the game board or the holding part of the game nail,
A predetermined game nail provided at a portion where the game ball that has entered the game area first contacts is held on the game board by an engagement structure in which a pulling force is reduced compared to some other game nails. A gaming machine characterized by

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