JP2020078593A - Game machine - Google Patents

Abstract

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 typical example of a game machine. The pachinko machine includes, for example, a game board that forms a game area in which the game balls flow down, and the game area guides the game balls to the winning holes and the winning holes from which the game balls are paid out when the game balls win the game. A large number of game nails that form a passage and a passage leading to the outlet without winning the prize are provided. A large number of game nails are driven and fixed to a game board that forms the outer shape of the game board. For this game board, wood such as veneer was previously used, and in recent years, transparent resin board material or molding. Goods are also used. By using such a transparent resin game board, it is possible for a player to visually recognize a decorative member such as a luminous body provided on the back side of the game board, and to expand the installation area of the decorative component more than ever before. (For example, see Patent Document 1).

JP, 2008-161638, A

  However, the holding state of the game nail is different depending on the material of the game board, and the behavior of the game ball is also likely to be different. For this reason, a player who is accustomed to the behavior of a game ball of a pachinko machine using a wooden game board may feel uncomfortable in the behavior of the game ball of a pachinko machine using a resin game board. There is a point.

  The present invention has been made in view of the above-exemplified 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 is
In a gaming machine provided with a gaming board made of resin that forms a gaming area in which a gaming ball flows down on the front side, and a plurality of gaming nails provided so as to project to the front side where the front surface of the gaming board faces,
The game nail is formed to have a head portion provided at a projecting end portion protruding to the front side, and an outer diameter smaller than the outer diameter of the head portion and a length continuing from the front surface of the game plate to the back surface side of the game plate. And a shaft portion, and the shaft portion is inserted into the hole formed in the game plate from the front side of the game plate and held by the game plate.
The shaft portion is provided with a holding portion formed to have a predetermined outer diameter that can be held in the hole portion of the game board,
As the tightening margin corresponding to the difference between the inner diameter formed as the hole portion of the game plate and the outer diameter of the holding portion, the plurality of tightening margins are set so that the pulling-out force of the game nail is within the range of about 250N to about 500N. Set as a tightening margin for at least a part of the game nails,
The plurality of game nails are held on the game board by a plurality of types of engaging structures having different shapes or inner diameters or outer diameters of at least one of the hole portion of the game board or the holding portion of the game nail,
A predetermined game nail provided at a portion where the game ball that has entered the game area first abuts is held on the game board by an engagement structure that has a lower pulling force 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.

  According to the present invention, it is possible to provide a gaming machine in which the behavior of gaming balls on a resin gaming board is suitable.

It is a perspective view of a pachinko machine in the first embodiment. It is a front view of a game board. It is a longitudinal cross-sectional view showing a fixed state of the game nail. It is a cross-sectional view showing two game nails provided on the upper side of the starting winning opening. It is a longitudinal cross-sectional view showing a fixed state of the game nail in the second embodiment. It is a longitudinal section showing a fixed state of a game nail in a 3rd embodiment.

  Hereinafter, an embodiment of the present invention will be described with reference to a pachinko gaming machine which is a kind of gaming machine (hereinafter referred to as "pachinko 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 pair of front and rear transparent glass plates 11 are arranged in a central portion thereof, and a game ball is directed to the front side through the window portion 12. The game board 20 flowing down is visible to the player. Two upper and lower ball plates 13 and 14 are provided on the lower side of the window portion 12, and game balls are stored in the ball plates 13 and 14. A firing handle 15 is provided on the right side of the ball plates 13 and 14, and when the player operates the firing handle 15, the game balls stored in the upper ball plate 13 are placed one by one on the front side of the game board 20. It is fired toward.

  As shown in FIG. 2, the game board 20 has a game area 21 formed in an inner portion of which the outer circumference is partitioned in a substantially circular shape. A center decoration member 22 and a plurality of side decoration members 23 are provided on the left and right sides of the central portion and the lower portion of the game area 21, and a large number of game nails are provided in the entire area of the game area 21 avoiding the decoration members 22 and 23. 100 is provided. In the area where a large number of game nails 100 are provided, there are special prizes for the player such as the general winning opening 24, the starting winning openings 25, 26, the variable winning device 27 for opening and closing the winning opening opened at the time of a big hit, the through gate 28, and the like. There are provided ball entrances, and game balls enter the ball entrances, whereby prize balls are paid out, and lottery for jackpots and the like is performed. As shown in FIG. 2, the game board 20 includes a game board 50 made of synthetic resin that forms its outer shape, and a large number of game nails 100 are driven in from the front side of the game board 50 and attached.

The game board 50 is a plate-shaped member that holds the game nail 100 and is made of a transparent resin, 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-shaped 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, or not necessarily 1. It is not necessary to form the plate-shaped member in one sheet, and a plurality of plate-shaped members may be formed in an overlapping manner. Regarding the color of the game board 50, it may be colorless and transparent, or colored and transparent, or may be formed of a colored and opaque synthetic resin having no translucency.

  FIG. 3 is a vertical cross-sectional view showing a fixed state of 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 the front surface 51 of the game board 50 projects toward the front side. The side where the game nail 100 projects corresponds to the game area provided on the front side of the game board 20, and the game ball flows down on this front side.

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

  The shaft portion 101 has a holding portion 111 which is held by the game board 50 at the end opposite to the head 102. The holding portion 111 is formed in a screw shape in which two spiral protrusions are formed by knurling. The tip surface 112 on the further tip 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 plate 50 and the glass plate 11 is a part of the shaft portion 101 and has a constant circular cross section 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, is attached so as to be inclined 5 degrees above the horizontal, and the game ball that is in contact with the game nail 100 from above is the game board. Guided to the 50 side, the game ball is configured to easily drop along the front surface 51 of the game board 50.

  An outer diameter D1 of a portion of the shaft portion 101, which is a part of the contact portion 113 and has a constant cross-sectional shape, is formed to be smaller than the outer diameter D2 of the holding portion 111, for example, approximately 1.85 mm. It is the outer shape of. A portion corresponding to the contact portion 113 has substantially the same outer diameter as that of the wire material, and the holding portion 111 is subjected to plastic deformation larger than that of the contact portion 113 by forging. Therefore, the holding portion 111 is harder than the contact portion 113 due to work hardening. Here, the outer diameter D2 of the holding portion 111 is the outer diameter at the maximum portion corresponding to the outer peripheral side end of the ridge that is farthest from the center axis of the shaft portion 101.

  As shown in FIG. 3, the holding portion 111 with respect to the game board 50 is mostly inserted into the thickness of the game board 50 corresponding to the back side from the front surface 51 of the game board 50, and a part of the game board 50. The length is set so as to project forward from the front surface 51. The amount of protrusion of the holding portion 111 on the front side of the front surface 51 of the game board 50 is a slight amount, and is about 0.3 mm. When the hammer hitting force for abutting the game ball and adjusting the angle 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 is nailed. 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, the holding portion 111 having a harder surface than the contact portion 113 and the like contacts the edge portion of the nail hole 52, so that the game nail 100 can be prevented from being broken. The length of the holding portion 111 along the axial direction is, for example, about 4.0 mm, and the protrusion amount of the game nail 100 protruding from the front surface 51 of the game board 50 is, for example, about 18.5 mm. There is.

  Before inserting the game nail 100 into the game plate 50, a nail hole 52 having a smaller diameter and a circular cross section than the holding portion 111 is previously drilled, 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 pressing the head 102 and rotating along the screw shape of the holding portion 111 into the nail hole 52.

  The inner diameter D3 that is pre-drilled as the nail hole 52 has a holding force (hereinafter referred to as a pulling force) that opposes a force in the direction of pulling out the game nail 100 from the game plate 50 within a range of approximately 250N to approximately 500N. Is set to be The pulling-out force is obtained by measuring the force in the direction of pulling out the game nail 100 along the axial direction while holding the head 102 with a tool, and measuring the force with which the game nail 100 is pulled out. Be done. This pulling force changes 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 pulling force increases as the tightening margin increases. Becomes higher and the tightening margin becomes smaller, the pulling force becomes lower.

  As for the pulling-out force, a plurality of types of nail holes 52 having different inner diameters D3 are punched in the game board 50, and the gaming nails 100 having the outer diameter D2 of the holding portion 111 fixed are inserted and fixed. Was set by measuring. Based on the 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 pulling out force of the game nail 100 with respect to the game nail 100 having the holding portion 111 of 2.08 mm, when the inner diameter D3 of the nail hole 52 is in the range of 1.84 mm to 1.88 mm (gradual change range), the nail hole Every 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 pull-out force gradually decreased each 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 set to 1.89 mm as a range (a sudden change range) in which the inner diameter D3 is expanded from 1.88 mm, the pulling-out force is greatly reduced as compared with the case of 1.88 mm. The pull-out force decreased by 60 N or more with respect to the change of the inner diameter D3 of the nail hole 52 of 0.01 mm. In the present embodiment, 1.88 mm at which the pulling-out force greatly decreases with respect to the amount of change in 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 pull-out 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 head 102 of the game nail 100 is hit with a hammer to adjust the angle of the game nail 100 to a specified angle. The game board 50 made of synthetic resin is harder than a wooden game board, and the feel of hitting the game nail 100 held in the nail hole 52 is hard in the game board 50 made of synthetic resin, and is made of wood. Soft on the board. This difference also affects the behavior of the game ball that abuts on the game nail 100, and in a wooden game board, the game ball that abuts on the game nail tends to repel, and in comparison, in the game board 50 made of synthetic resin. Is hard to repel.

  Further, the durability of the game nail 100 against repeated bending 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 to one side and the other side parallel to the front surface 51 of the game plate 50, for example, the left side and the right side. In the case of causing bending deformation accompanied by, the larger the inner diameter D3 of the nail hole 52, that is, the lower the pulling force, the more the number of bends until the game nail 100 is broken, and the higher the durability. Even in the result of repeatedly applying a force to a portion corresponding to the contact portion 113 of the game ball and performing a durability test without plastic deformation, the larger the inner diameter D3 of the nail hole 52, that is, the lower the pulling force, the durability. Became high.

The pulling force of the game nail 100 is about 250 N in the wooden game board, and in order to make the behavior of the game ball in this wooden game board and the feel at the time of adjusting the game nail 100 closer, the game nail in this embodiment. The pull-out force of 100 is set to be within a range of approximately 250N to approximately 500N. As the setting of the pulling-out force, for example, it is better to set it to about 250N to about 400N, and it is preferable to set it to about 250N to about 350N. However, the narrower the allowable range of the pulling force, the more strictly the dimensions of the inner diameter D3 of the nail hole 52 and the outer diameter D2 of the holding portion 111 must be controlled. Preferably.

  FIG. 4 is a diagram schematically showing the two game nails 100 provided in the upper portion of the upper starting winning opening 25. The two game nails 100 are bent in the direction in which the heads 102 of the two game nails are separated from each other. The angle between the two gaming nails 100 is set by inserting the metal gauge 30 having a thin plate shape and having a distance W to a predetermined distance W so that the distance between the base portions of the head 102 is set. By setting the spacing between the heads 102 of the game nails 100 to be wider than the base side of the game nails 100 as the prescribed spacing W, the game balls appear to be more likely to enter the starting winning opening 25 from the viewpoint of the player. .. However, depending on the pulling-out force of these two game nails 100 and the surrounding game nails 100, even if the game nails 100 are arranged at exactly the same arrangement, at the same interval, and at the same angle, the game ball to the starting winning hole 25. The winning probabilities of are different. For a player who has become accustomed to conventional pachinko machines, if the winning probability is lower than it looks, he/she may feel aversion to the game hall or the game machine manufacturer. It is preferable to set the force to a low value close to a wooden game board. As a result, the behavior of the game ball that abuts on the game nail 100 is close to the behavior of the game ball on the wooden game board, and it is possible to provide a game machine that is familiar to a skilled player.

  As described above, in the pachinko machine 10, the holding portions 111, which are hard portions having a harder surface than the contact portions 113 of the game nail 100, are located on both front and rear sides with respect to the front surface 51 of the game board 50. Therefore, 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 contact between the edge portion of the nail hole 52 and the game nail 100 can be suppressed, and the adjustment work of the game nail 100 on the resin game board 50 can be suitably performed.

  Further, the holding portion 111, the surface of which 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 is possible to easily confirm whether or not the game nail is at the specified position, and place the game nail 100 at the specified position. It can be easy to manage. Further, since the game board 50 is transparent, the holding portion 111 can be seen through by the transparent game board 50, and further, the protruding amount of the holding portion 111 protruding forward from the front surface 51 of the game board 50 is small, There is no great difference in appearance from the one in which the holding portion 111 is completely behind the front surface 51 of the game board 50. In a conventional pachinko machine using a game board made of resin, the holding portion is located farther back than the front surface of the game board, but the appearance does not differ from that of the pachinko machine and it is easy to manage the game nail 100 at a prescribed 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 500N, which is more than twice the pulling force in the wooden game board. Compared to the wooden game board, the withdrawal force of the resin game board changes greatly with respect to the change of the tightening allowance. Since the amount of change with respect to the change of the inner diameter is small, the tightening margin is increased to a size where the amount of change is small, and the pulling force of the game nail is accordingly large.

  On the other hand, in the pachinko machine 10 according to the present invention, the pulling force of the game nail 100 on the resin game board 50 is set to be a low tightening margin, and the holding force of the game nail 100 is suppressed to be low. Due to this decrease in the holding force, the feel of the game nail 100 in adjusting the angle is soft and the workability is good, and the behavior of the game ball that abuts on the game nail 100 is close to the behavior of the game ball on the wooden game board, so that the skill of the skilled player is improved. The game machine can be familiar to the player.

Here, instead of the above-described first embodiment, the result of the game such as winning the prize hole, etc., without strict dimensional management so that the pulling force for all the game nails 100 is set low. Only the pulling-out force for the game nail 100 (specific game nail 100a), which is likely to affect, may be reduced. As shown in FIG. 3, a plurality of specific game nails 100a provided on the upstream side of the winning opening, near the entrance of the winning passage, or in a specific portion 61 such as a portion where the game ball in the game area 21 first comes into contact. The nail hole 52 provided with may have a larger center value of the allowable dimension of the inner diameter D3 than 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 margins, and the nail hole 52 of the specific game nail 100a is 0.01 mm in size compared to the standard dimension of 1.88 mm. The range is set as an allowable dimension, while the general game nails 100b other than the specific game nail 100a have an allowable dimension of 0.01 mm to plus 0.03 mm with respect to the reference dimension. Although the average dimension has a difference of 0.01 mm, it is possible to increase the processing speed and reduce the management cost for the nail hole 52 with the allowable dimension expanded, and the angle adjustment can be performed during manufacturing. The specific game nail 100a that is easily applied can have improved functionality such as durability and a soft feel when hit with a hammer.

  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 vertical cross-sectional view showing a fixed state of the game nail 100 on the game board 200 according to the second embodiment. The above-described first embodiment and the game nail 100 have the same shape, but the shape of the nail hole is different. Hereinafter, the same components as those in the first embodiment will be designated by the same reference numerals, and the description thereof will be omitted.

  As shown in FIG. 5, the nail hole 202 in the second embodiment is formed in a stepped circular cross-section hole shape having a large inner diameter D4 on the front surface 201 side of the game plate 50 from which the game nail 100 is projected, and on the back side. The inner diameter D3 is formed smaller than the inner diameter D4 on the front surface 201 side. The holding portion 111 of the game nail 100 is held at a portion having an 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 in front 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 described above is arranged, and the general game nail 100b is provided with the nail hole 52 having the constant cross section in the first embodiment described above ( 2 and 3).

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

  The inner diameter D3 of the nail hole 52 of the general gaming nail 100b has the same reference dimension as the inner diameter of the stepped nail hole 202, and is smaller than the reference dimension in the first embodiment, for example, 0.02 mm smaller inner diameter. Although the pull-out force of the game nail 100 is increased by the reduction of the reference dimension, the holding length of the holding portion 111 held by the inner diameter D3 in the axial direction is formed short in the stepped nail hole 202, and the stepped step is formed. 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. With such a configuration, the inner diameter D3 of the portion holding the holding portion 111 of the general game nail 100b and the specific game nail 100a can be made common and can be processed by the same tool. And, when processing the inner diameter D3 on the back side of the specific game nail 100a, the processing speed is made slower than when processing the inner diameter D3 of the general game nail 100b, so that the axis of the tool is less likely to shake and the accuracy is improved. A high inner diameter D3 can be formed.

Further, the holding portion 111 for holding the game nail 100 is the game board 2 for the specific game nail 100a.
00 is on the back side from the front surface 201, and 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. It can be easily realized with 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 that of the first and second embodiments, and the game board 50 is formed thick. FIG. 6 is a vertical sectional view showing a fixed state of the game nail according to the third embodiment. Hereinafter, with respect to the game nail fixing structure according to the third embodiment, portions different from the first embodiment will be described.

  In the game nail 150 according to the third embodiment, the shaft portion between the head 102 and the holding portion 111 does not have a constant cross-sectional shape, and a constricted portion 152 having a narrow outer periphery is provided in a portion near the holding portion 111. The length of the constricted portion 152 is longer than that of the game nail 100 in the first embodiment. The constricted portion 152 is formed by thinly forging a brass wire rod, and its surface is formed harder than the contact portion 113 or the like with which the game ball abuts due to work hardening. The constricted portion 152 has the thinnest central portion in the length direction of the shaft portion 151, is formed to be gradually thicker on both sides, and is formed to be recessed in an arc shape in a side view. The constricted portion 152 has an axial length of, for example, 2 mm, and the minimum portion has a diameter of, for example, 1.75 mm. A part of the constricted portion 152 is located so as to project 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 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 above-described first embodiment.

  By providing the game nail 150 according to the third embodiment on the game board 300, the gap between the contact portion 113 and the holding portion 111 with which the game ball abuts is separated from the game nail 100 according to the first embodiment. Therefore, the game ball is easy to bounce, and the behavior of the game ball close to that of a wooden game plate can be realized by the game plate 300 made of synthetic resin.

  Further, the constricted portion 152 is a highly hardened portion hardened as compared with the abutting portion 113, though it comes into contact with the edge portion of the nail hole 52 on the front surface 301 of the game board 300, and the portion is formed thin. Therefore, it is difficult for the game nail 100 and the edge portion of the nail hole 52 to come into contact with each other, and even if they come into contact with each other, the contact force becomes low, so that the game nail 100 can be prevented from being broken.

  The present invention is not limited to the above-described embodiment, and may be modified and implemented as described below, for example. 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, but it does not necessarily have to have a circular cross section. It may be formed in another shape such as a shape. The nail hole 52 does not necessarily have to be a through hole, and may be a non-through hole in which only the front side of the game board 50 is open and the back side is closed. However, when the game nail 100 is broken, the hole of the inner diameter holding the holding portion 111 penetrates to the back surface side so that the game nail 100 can be pushed out to the back surface side and pulled out. Is preferred. As a result, when the game nail 100 is broken, the inner surface of the nail hole 52 is less likely to be scraped as compared with the case where the remaining portion of the game nail 100 is pulled out to the surface side, and the game nail 100 is replaced with a new game nail. It is possible to increase the holding power for pulling out the.

  Here, the center decoration member 22 in the first embodiment is provided with an opening in the game board 50 and is fixed by screwing from the front surface 51 side of the game board 50, for example, from the front surface side with respect to the opening of the game board 50. It is preferably detachably fixed. When the game nail 100 that has been broken as described above is pushed out to the back surface side of the game board 50 and pulled out, a part is arranged in front of and behind the game board 50 through the opening of the game board 50, for example, a U-shape in side view. A dedicated tool for can be placed. Specifically, a shaft-shaped member that is movable so as to project to the part located on the back side is provided at the part located on the front side of the tool, and the game nail 100 broken by the member is used as the game board 50. Please push out from the front side. The game nail 100 provided on the upper side of the start winning opening 25 or in the vicinity thereof, or a passage of the game ball is provided in the center decoration member 22 to guide the upstream side portion away from the starting winning opening 25 to a portion directly above the starting winning opening 25. In the vicinity of the center decoration member 22 such as the entrance portion of the passage in such a case, many game nails 100 that have a high contact frequency of the game balls and have a high influence on the result of the game such as winning are arranged. The nails need to be arranged at a predetermined position and at a predetermined angle so that the game balls can be paid out to the player as prize balls according to the design values. This kind of game nail 100 is highly likely to be broken, and even if it is a transparent game plate for the game nail 100, the opening of the game plate 50 is provided so that a small dedicated tool can provide a front surface 51 of the game plate 50. The holding force for pulling out the game nail 100 when the game nail 100 is pushed out from the side to the back side and replaced with a new game nail can be maintained high.

  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 a portion near the holding portion 111 where the bending stress is high. A part of the tip side of the nail 150 is likely to remain within the thickness range of the game board 300, that is, in the nail hole 302. When pushing out the remaining game nail 150 to the back side of the game plate 300 and inserting a new game nail 152, the front side 301 side of the game plate 300 remains inside the nail hole 302 when pushing out the broken game nail 150. Since the game nail 150 is not rubbed at all, the portion is not scraped, and the holding force for pulling out the game nail 100 when replaced with a new game nail can be easily made high.

  In each of the above-described embodiments, the holding portion 111 is configured by the two thread shapes protruding to the outer peripheral surface side, but it is not necessarily required to have the two thread shapes, and may be one thread or three threads or more. If the shape is such that the pull-out force can be obtained, the cross-sectional shape is not twisted along the axial direction, a net-shaped or striped knurled shape or a large number of protrusions parallel to the axial direction are provided in the circumferential direction. It may be a holding portion having a cross-sectional shape in which irregularities are provided on the surface.

  In each of the above-described embodiments, the holding portion 111 and the constricted portion 152 as the hard portion are provided so as to protrude from the front surfaces 51, 201, 301 of the game plates 50, 200, 300 by approximately 0.3 mm to the front side. However, it is not necessary to set the protrusion amount, but it is preferable that the protrusion amount be within a range of approximately 0.1 mm or more and 0.5 mm, and it is preferable that the amount be within a range of approximately 0.2 mm to approximately 0.4 mm. Is. Further, when the game nails 100, 150 are attached to the game plates 50, 200, 300 while being tilted upward, the protrusion amount of the hard portion is the smallest in the upper portion, and therefore the above-mentioned in the smallest portion. It is preferable to set the protrusion amount.

In each of the above-described embodiments, the holding portion 111 and the constricted portion 152 as the hard portion are formed to be harder than the abutting portion by the plastic deformation due to the processing when forming the outer shape, but they are not necessarily formed hard when processing the shape. The hard portion may be formed by another method. For example, the surface may be hardened by a process such as shot peening that causes a small-diameter iron ball to collide with the surface to harden the surface, or it may be located in front of and behind the front surface of the game plate in the shaft portion of the game nail. The surface may be hardened by forming a film or layer of a metal that is harder than brass as a base material in the range by vapor deposition or the like. The boundary between the holding part 111 or the constricted part 152 as the hard part and the part which is not the hard part is formed so that the ridge line is clearly projected or the surface color is changed so that it can be seen at a glance as a boundary line. It is preferable to make it different so that the boundary line can be confirmed, whereby the positional relationship between the edge portion of the nail holes 52, 202, 302 on the front surface side of the game boards 50, 200, 300 and the boundary line. It can be easily confirmed, and the appearance can be improved by overlapping the edge portion and the boundary line. The front surface of the game board is a combination of the inner diameters of the nail holes 52, 202 and 302 and the outer diameter of the holding portion 111 so that the tightening margin or pulling force different from the tightening margin or pulling force in each of the above-described embodiments is obtained. A part of the hard portion may be slightly projected to the side, and even in this case, the adjustment work of the game nail on the resin game board can be suitably performed. Also, a colored sheet-shaped decoration plate (cell plate) is placed on the front surface of the resin game board, or an opaque resin game board is used, and the inside of the nail hole is inserted from the front side of the game board. The tip portion of the inserted game nail may be invisible, and in this case, the projection of a part of the holding portion 111 as a hard portion projecting from the front surface of the game board can be easily visible. Is preferable.

  In each of the above-described embodiments, a part of the holding portion 111 or the constricted portion 152 as a hard portion is configured to project forward from the front surface of the game plates 50, 200, 300, but it is not always necessary to adopt this configuration. By setting the tightening margin or withdrawing force while the hard portion is completely inserted and arranged in the nail holes 52, 202, 302, the behavior of the game ball on the resin game board is preferable. It is possible and preferable.

  The specific portion 61 in which the specific game nail 100a in each of the above-described embodiments is provided is not limited to the portion in the above-described embodiment, and may be another portion. In this case, the inclination is large for adjusting the angle of the game nail, or the game ball. It is preferable to set the part that frequently contacts or the game ball contacts at high speed as the specific part. Further, regarding the engaging structure in which the game nails and the nail holes in which the game nails 100 and 150 and the nail holes 52, 202 and 302 in each of the above embodiments are engaged, the engaging structure of 1 described in each of the above embodiments May be applied to all game nails provided in one pachinko machine, or two types of engaging structures may be applied to one pachinko machine by dividing the specific game nail 100a and the general game nail 100b. It is also possible to apply three or more types of engagement structures to one pachinko machine.

  The present invention may be applied to a pachinko machine or the like of a type different from the above embodiment. For example, once a big hit occurs, it may be implemented as a pachinko machine in which the expected big hit value is increased until the big hit state occurs a plurality of times (for example, twice or three times) including the big hit. Further, it may be implemented as a pachinko machine which is in a special game state on condition that a ball is won in a predetermined area after the jackpot pattern is displayed. Further, it may be adopted as a so-called ordinary machine without a lottery function such as a big hit. It may be implemented as a pachinko machine that enters a special game state when a ball enters a predetermined winning opening. Alternatively, it may be implemented in an enclosed pachinko machine in which balls circulate. Further, in addition to the pachinko machine, it may be implemented as various game machines such as arrangement ball type pachinko machines and sparrow balls.

  The features of the invention group extracted from the above-described embodiments will be described below, showing effects and the like as necessary. It should be noted that, in the following, for ease of understanding, the configuration corresponding to each of the above-described embodiments is appropriately shown in parentheses or the like, but is not limited to the specific configuration shown in brackets or the like. The meanings and examples of the terms described in each feature may be applied as the meanings and examples of the terms described in other features described in the same wording.

<Feature A group>
Conventionally, there is a pachinko machine as a typical example of a game machine. The pachinko machine includes, for example, a game board that forms a game area in which the game balls flow down, and the game area guides the game balls to the winning holes, which are paid out when the game balls win A large number of game nails that form a passage and a passage leading to the outlet without winning the prize are provided. A large number of game nails are driven and fixed to a game board that forms the outer shape of the game board. For this game board, wood such as veneer was used before, and in recent years resin board materials or molded products. Is also used. In particular, by using a game board made of transparent resin, it is possible to make the decorative member such as a luminous body 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 ever before. (For example, see JP-A-2008-161638).

  However, the game nail nailed into the resin game board has a different feeling of adjusting the game nail compared to the game nail nailed into the wooden game board, and cannot be adjusted as usual. However, there is a problem that the game nail will break if the adjustment is done too much.

<Feature A1>
A game board made of resin (game boards 50, 200, 300) in which the game balls flow down on the front side, and game nails (game nails 100, 150) provided so that the front surface of the game board faces forward. In a gaming machine (pachinko machine 10) equipped with
The gaming nail has a head portion (head portion 102) provided at the tip end portion protruding to the front side, and an outer diameter smaller than the outer diameter of the head portion, and continues from the front surface of the game board to the back surface side of the game board. With a shaft portion (shaft portion 101, 151) formed to a length, the shaft from the front side of the game board with respect to a hole portion (nail holes 52, 202, 302) preformed in the game board. The part is inserted and held on the game board,
On the shaft portion, a holding portion (holding portion 111) formed to have a predetermined outer diameter that can be held in the hole of the game board,
A contact portion (contact portion 113), which is located on the front side of the front surface of the game plate and contacts the game ball, is provided.
A part (constricted portion 152) between the holding portion and the contact portion in the shaft portion, or the holding portion is a hard portion whose surface is harder than the contact portion along the axial direction of the shaft portion. Was
A part of the hard part of the game nail is slightly projected to the front side with respect to the front face of the game plate, and the game plate is in a state where the hard parts are located on both front and rear sides with respect to the front face of the game plate. A gaming machine characterized by being held by.

  According to the gaming machine described in Feature A1, it is possible to preferably perform the adjustment work of the gaming nail on the resin gaming board. That is, since the hard portion of the game nail is located on both front and rear sides with respect to the front surface of the game board, even if the game nail comes into contact with the edge portion of the hole on the front surface of the game board, that portion is the contact portion. It is a harder part. Therefore, it is possible to suppress breakage of the game nail due to contact between the edge portion of the hole and the game nail, and it is possible to suitably perform the game nail adjustment work on the resin game board.

  Also, since the hard part is slightly projected from the front of the game board, it is easy to see whether the game nail is in the specified position by visually recognizing the boundary position between the hard part and the part softer than the hard part. Can be confirmed, and it is possible to easily manage the game nail at the prescribed position. Also, in the case of a transparent game board, even if a part of the hard part projects forward from the front surface of the game board, the amount of projection is small, and the entire hard part from the front surface of the game board. Since the hard portion can be seen through even on the back side, there is no great difference in appearance with the hard portion completely entering the back side from the front surface of the game board. Therefore, while the appearance as a gaming machine can be made equal to that of a conventional gaming machine using a resin gaming board, it is possible to make the gaming machine easy to manage the gaming nails at the specified position, and further adjust the gaming nails. Can be done.

The slight protrusion of the hard portion in the characteristic A1 may be a small amount of approximately one fifth or less of the length of the hard portion along the axial direction of the shaft portion. With such a configuration, it is possible to provide a gaming machine in which the adjustment work of the game balls is easy while maintaining high durability such as the fatigue strength of the gaming nail due to the formation of the hard portion.

<Feature A2>
A gaming machine according to Feature A1, characterized in that the game nail is held on the game board in a state where the hard portion protrudes from the front surface of the game board toward the front side with a length of 0.5 mm or less. ..

<Feature A3>
The 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 is set within a range of approximately 0.18 mm to approximately 0.22 mm. The game machine according to feature A1 or A2.

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

  In addition, it is more preferable that the tightening allowance in the gaming machine described in Feature A3 is set within 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 of about 1.1 times to about 1.3 times the outer diameter of the contact portion, and a length in the axial direction of about 1.5. Therefore, it is preferable that the setting is approximately three times.

<Feature B group>
Conventionally, there is a pachinko machine as a typical example of a game machine. The pachinko machine includes, for example, a game board that forms a game area in which the game balls flow down, and the game area guides the game balls to the winning holes, which are paid out when the game balls win A large number of game nails that form a passage and a passage leading to the outlet without winning the prize are provided. A large number of game nails are driven and fixed to a game board that forms the outer shape of the game board. For this game board, wood such as veneer was used before, and in recent years resin board materials or molded products. Is also used. In particular, by using a game board made of transparent resin, it is possible to make the decorative member such as a light emitting element 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 ever before. (For example, see JP-A-2008-161638).

  However, the holding state of the game nail is different depending on the material of the game board, and the behavior of the game ball is also likely to be different. For this reason, a player who is accustomed to the behavior of a game ball of a pachinko machine using a wooden game board may feel uncomfortable in the behavior of the game ball of a pachinko machine using a resin game board. There is a point.

<Feature B1>
In a gaming machine provided with a game board made of resin in which a game ball flows down on the front side, and a plurality of game nails provided so as to project to the front side where the front side of the game board faces,
The game nail is formed to have a head portion provided at a projecting end portion protruding to the front side, and an outer diameter smaller than the outer diameter of the head portion and a length continuing from the front surface of the game plate to the back surface side of the game plate. And a shaft portion, and the shaft portion is inserted into the hole formed in the game plate from the front side of the game plate and held by the game plate.
The shaft portion is provided with a holding portion formed to have 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 of the game plate and the outer diameter of the holding portion, a gradually changing range in which the pulling-out force of the game nail gradually decreases with respect to the reduction of the tightening margin, Compared with the gradual change range, the tightening margin is small, and the pulling-out force is greatly reduced with respect to the decrease in the tightening allowance. In the sudden changing range, the tightening allowance of a predetermined amount or more in the sudden changing range is the plurality of gaming nails. A gaming machine characterized by being set as a closing margin of at least a part of.

<Feature B2>
In a gaming machine provided with a gaming board made of resin in which a gaming ball flows down on the front side, and a plurality of gaming nails provided so as to project to the front side where the front side of the gaming board faces,
The game nail is formed with a head portion provided on the tip end portion projecting to the front side, and an outer diameter smaller than the outer diameter of the head portion and a length continuing from the front surface of the game plate to the back surface side of the game plate. And a shaft portion, and the shaft portion is inserted into the hole formed in the game plate from the front side of the game plate and held by the game plate.
The shaft portion is provided with a holding portion formed to have a predetermined outer diameter that can be held in the hole portion of the game board,
As the tightening margin corresponding to the difference between the inner diameter formed as the hole portion of the game plate and the outer diameter of the holding portion, the plurality of tightening margins are such that the pulling-out force of the game nail is within the range of about 250N to about 500N. A game machine characterized by being set as a tightening margin of at least a part of a game nail.

  According to the gaming machines described in the features B1 and B2, it is possible to provide a gaming machine in which the behavior of the gaming balls on the resin gaming board is suitable. That is, since the draw-down force of the game nail on the resin game board is kept low, the holding force of the game nail can be kept lower than before. Due to this reduction in holding power, the feel of the game nail angle adjustment is soft and workability is good, and the behavior of the game ball that abuts on the game nail is close to the behavior of the game ball on the wooden game board, so that a skilled player It is possible to provide a gaming machine that is easy to get close to.

<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 portion of the game board and the holding portion of the game nail. Characteristic feature A game machine described in B1 or B2.

<Characteristic C1>
In a gaming machine provided with a game board made of resin in which a game ball flows down on the front side, and a plurality of game nails provided so as to project to the front side where the front side of the game board faces,
The game nail is formed to have a head portion provided at a projecting end portion protruding to the front side, and an outer diameter smaller than the outer diameter of the head portion and a length continuing from the front surface of the game plate to the back surface side of the game plate. And a shaft portion, and the shaft portion is inserted into the hole formed in the game plate from the front side of the game plate and held by the game plate.
On the shaft portion, a holding portion formed to have a predetermined outer diameter that can be held in the hole portion of the game board,
A contact portion, which is located on the front side from the front surface of the game board and is in contact with a 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 portion of the game board and the holding portion of the game nail. Characteristic gaming machine.

  According to the gaming machine described in the characteristics B3 or C1, only the pulling-out force for some gaming nails, such as gaming nails to which a large angle adjustment is applied and gaming nails that are likely to affect winning in the winning opening, becomes low. While setting the game nails to be suitable for the adjustment work and the behavior of the game ball, the pulling force is set to be high for other game nails and a structure that emphasizes manufacturing cost and workability is adopted. You can

The "plurality of engagement structures" in the description of the feature B3 or C1 may be a plurality of engagement states or a combination of a plurality of types, and a holding portion of a game nail and a hole portion of a game board. In the engaged state, the size or shape of at least one side of the holding portion of the game nail and the hole portion of the game plate or a combination thereof may be different but not the same.

  Further, in the gaming machine having the characteristics B3 or C1, it is preferable that all the gaming nails used in the gaming machine are common gaming nails having the same shape and size, and the pulling force is changed depending on the shape of the hole portion of the gaming board. As the shape of this 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 larger than the inner side. With a large stepped hole, a game nail held in a small diameter hole on the back side, and a game nail held in a hole where the small diameter hole continues to the front side of the game board. It is preferable to use the provided game machine because the manufacturing cost and the management cost can be reduced.

  Note that any one of the features A1 to A3, the features B1 to B3, and the feature C1 may be combined with any other feature or a plurality of features. The following is a basic configuration of a gaming machine to which each of the above features can be applied.

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

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

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

Claims (1)

In a gaming machine provided with a gaming board made of resin that forms a gaming area in which a gaming ball flows down on the front side, and a plurality of gaming nails provided so as to project to the front side where the front surface of the gaming board faces,
The game nail is formed to have a head portion provided at a projecting end portion protruding to the front side, and an outer diameter smaller than the outer diameter of the head portion and a length continuing from the front surface of the game plate to the back surface side of the game plate. And a shaft portion, and the shaft portion is inserted into the hole formed in the game plate from the front side of the game plate and held by the game plate.
The shaft portion is provided with a holding portion formed to have a predetermined outer diameter that can be held in the hole portion of the game board,
As the tightening margin corresponding to the difference between the inner diameter formed as the hole portion of the game plate and the outer diameter of the holding portion, the plurality of tightening margins are set so that the pulling-out force of the game nail is within the range of about 250N to about 500N. Set as a tightening margin for at least a part of the game nails,
The plurality of game nails are held on the game board by a plurality of types of engaging structures having different shapes or inner diameters or outer diameters of at least one of the hole portion of the game board or the holding portion of the game nail,
A predetermined game nail provided at a portion where the game ball that has entered the game area first abuts is held on the game board by an engagement structure that has a lower pulling force compared to some other game nails. A gaming machine characterized by being present.

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