JP2005040377A - Game machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sealed structure of a board box which is highly protected even from cheating activities. <P>SOLUTION: The board box of a pachinko game machine or the like is built by the combination of an outer case body 2a and an inner case body 2b and a sealing part 4 is formed at a part thereof. Insertion holes 6 are formed at the sealing part 4 and sealing screws or the like are inserted into the insertion holes 6 to clamp the case body 2a and the inner case body 2b together so tightly to disallow the opening of the board box. A lid member is also inserted properly into the insertion hole 6 to cover the sealing screw thereby making it further hard to remove. Thus, the destroying of the sealing part 4 is necessary for the opening of the board box 2 thereby securing the mark of the destruction left substantially. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to, for example, a sealing technique for a substrate box in which a control substrate for controlling a game operation is controlled in a ball-type game machine, a revolving game machine, or the like.

  Conventionally, this type of board box (or board storage box, board case, etc.) is sealed with a sealing screw or the like so that it cannot be opened, and the head of the sealing screw is shielded by some means after the fastening. There is known a technique for preventing the tool from getting close to (accessed to) the sealing screw. For example, as a known technique, after a substrate box is tightened with a sealing screw, a sealing plug is inserted into the insertion hole (see Patent Document 1), or a hole is closed with a flat lid (Patent Document 2,) 3), pachinko balls, spheres, etc. that close the hole (see Patent Documents 4 and 5), or nails, projections, etc. protruding in the insertion direction are locked in the hole, etc. (patent) References 6 and 7).

JP-A-9-276516 (first page, FIG. 6) Japanese Patent Laid-Open No. 11-214666 (first page, FIG. 3, FIG. 5) JP 2000-300720 A (page 1-3, FIG. 1) Japanese Patent Laid-Open No. 10-216323 (first page, FIGS. 7 and 8) JP 10-337367 A (page 9, FIG. 13D) JP 2000-102659 A (page 1-4, FIGS. 1 and 8) JP-A-10-263171 (5th page, FIG. 7)

  All of the above-mentioned known techniques try to keep the trace clearly when the board box is opened by making it impossible to operate from the outside after tightening the sealing screw of the board box. is there. That is, when the sealing of the substrate box is released for some reason, the inside of the substrate box cannot be opened unless the sealing screw that has already been tightened is loosened and the portion in the vicinity thereof is destroyed. Therefore, for example, when the substrate box is opened to comply with the inspection of a public security organization, an official inspection record is left with a trace of the destruction. On the other hand, if the board box is opened to tamper with the control board, only traces of destruction will be left even though there is no inspection record by the public security organization. It becomes obvious at a glance.

  However, none of the above-mentioned known techniques for fraud countermeasures is perfect, and there is still room for improvement little by little. For example, the technology (Patent Document 1) for inserting a sealing plug into the insertion hole of the sealing screw and the technology (Patent Documents 4 and 5) for inserting and killing pachinko balls / spheres etc. in the hole require a large amount of insertion work. In addition, the technology (Patent Documents 2 and 3) that closes the hole with a simple flat lid is somewhat ineffective with respect to the lid peeling action. Furthermore, in the structure (patent documents 6 and 7) in which the nail | claw and protrusion which protruded in the insertion direction were latched in the hole, if the root part of the nail | claw or protrusion is picked from the outer side of a hole and these are forcedly deformed, There is a structural problem that the locking can be released.

  Accordingly, an object of the present invention is to provide a technique capable of easily realizing a sealing structure for a substrate box, which has been further countered by fraud.

  The gaming machine of the present invention can accommodate a control board between a control board on which a control circuit for controlling a gaming operation is formed as a basic configuration and at least a box body and a cover body combined therewith. And a substrate box. Therefore, the type of gaming machine is not particularly limited, and includes various forms such as a ball and ball type gaming machine represented by a pachinko machine, a revolving type gaming machine such as a slot machine, and an endless belt type gaming machine. The control board is formed with a control circuit for controlling the game operation by the gaming machine, and the game proceeds according to the program executed here.

  The board box has a size and shape that can accommodate the control board therein, and is configured by combining at least the box body and the cover body. These box main bodies and cover bodies do not necessarily have the same shape and structure. For example, a form in which a cover body that can be attached and detached and slidable with respect to a container-like box main body may be combined. Further, the box body and the cover body may be separable from each other, or may be connected so as to be opened and closed by a connecting means such as a hinge. In any case, a board box is configured by combining a box body and a cover body (a plurality of individual parts may be provided), and a control board is accommodated therein.

(Solution 1)
As a specific means for solving the above problems, the gaming machine of the present invention is formed on a board box, and the inside of the board box is opened by fastening the box body and the cover body to each other using a predetermined fastener. A sealing part that is impossiblely sealed, an insertion hole for inserting a fastener formed in the sealing part, and being inserted into the insertion hole in a state in which the fastener is fastened, And a lid member that shields the fastener.

  The inside of the substrate box is formed by combining the box body and the cover body, and the box body and the cover body are fastened to each other by a fastener in a state where the control board is accommodated therein. In order to perform this fastening, a sealing portion is formed in the substrate box. When fastening is performed at this sealing portion, the inside of the substrate box is sealed so as not to be opened. An insertion hole is formed in the sealing portion. When a fastener is inserted into the insertion hole, the tool is brought into contact with the fastener through the entrance / exit of the insertion hole.

  When the fastening by the fastener is performed, the fastener is shielded in the entrance / exit direction only by inserting the lid member into the insertion hole. In this state, the lid member makes it impossible for the tool to come close to the fastener and prohibits its operation. Further, since the lid member does not easily come out in a state of being inserted into the insertion hole, it is considerably difficult to take out the lid member illegally.

(Solution 2)
As a more specific solution, the above-described lid member has at least a pair of locking pieces extending in the direction opposite to its insertion direction, and the insertion hole further includes a pair of insertion pieces as the lid member is inserted. A guide portion that guides the locking pieces in a direction close to each other and elastically deforms them, and when the lid member is inserted to a predetermined locking position, restores the elastic deformation applied to the pair of locking pieces. And an engaging portion that engages with the pair of locking pieces on the rear side in the insertion direction.

  The above-described ease of insertion of the lid member and prevention of the lid member are realized by a pair of locking pieces. That is, by simply inserting the lid member into the insertion hole, the pair of locking pieces are guided by the guide portion and easily elastically deformed, and as a result, the pair of locking pieces are close to each other (diameter reduced), There is no need to narrow the distance between the pair of locking pieces in advance. In this regard, when the lid member has a structure having a nail or a protrusion protruding in the insertion direction as in the known technique, it is necessary to narrow the distance in advance by picking these, and the preparation work is extremely complicated. However, in the present invention, the operation is simple because it is only necessary to push the lid member directly into the insertion hole.

  Furthermore, the lid member reaches the predetermined locking position (position where the fastener is shielded) just by pushing it into the insertion hole as it is. Engage with the engaging part. At this time, since the engaging portion engages with the locking piece on the rear side in the insertion direction, even if an attempt is made to operate the locking piece from the outside (in the direction of the entrance / exit) thereafter, the engaging portion becomes an obstacle and the locking piece Cannot be disengaged. For this reason, it is very difficult to remove the lid member from the insertion hole after the lid member has been inserted to the locking position.

  With regard to this point as well, in the case of a structure that is inserted into the insertion hole with a claw or protrusion protruding from the lid member at the top as in a known technique, these roots (base ends) are located close to the entrance and exit from the outside. Easy operation. For example, if tweezers or the like is inserted into the insertion hole and the base portions of the claws (or protrusions) on both sides are pressed (picked) inwardly, the engagement of the tip portion can be released and the lid member can be removed. It becomes possible. On the other hand, in the structure of the present invention, it is extremely difficult to deform the locking piece by an external operation, and it can be said that the structure is difficult to be fraudulent.

(Solution 3)
As a more practical aspect, the lid member includes a main body portion that shields the fastener in a state where the lid member is inserted to the locking position. It is preferable that they can be deformed and become a knob portion of the lid member by being sandwiched so as to face each other. In this case, when the lid member is inserted into the insertion hole, the pair of locking pieces can be used as a knob, so that the lid member can be easily inserted. Further, since the lid member can suppress an unauthorized operation to the fastener by the main body portion, the fastener can be more strongly guarded by making the main body portion a strong structure.

(Solution 4)
In addition, the pair of locking pieces extends and extends in a divergent shape, and when the lid member is inserted into the insertion hole, the pair of locking pieces narrows each other along the inner wall of the insertion hole. It may be elastically deformed. In this case, simply inserting the lid member into the insertion hole allows the pair of locking pieces to be guided and elastically deformed naturally on the inner wall thereof, so that it is not necessary to make the shape of the guide portion special. .

(Solution 5)
In the case where the pair of locking pieces are widened in a divergent shape, an embodiment including a guide groove formed at the opening edge of the entrance / exit of the insertion hole and guiding the pair of locking pieces when the lid member is inserted is preferable. In this case, since the pair of locking pieces are guided by the guide grooves and can be elastically deformed smoothly, the pushing force when inserting the lid member is reduced. In addition, since the lid member is positioned with respect to the insertion hole by fitting the pair of locking pieces into the guide groove, the lid member can be easily pushed to the locking position simply by pushing the lid member thereafter. Can do.

(Solution 6)
Furthermore, the engaging portion of the insertion hole accepts a pair of locking pieces when the lid member is inserted to the locking position, thereby allowing them to expand in a divergent shape and reverse to the insertion direction. A mode including an engagement groove for restricting displacement of the pair of locking pieces in the direction is preferable. Thereby, the lid member can be reliably locked at the locking position, and when the locking piece fits into the engagement groove, the locking piece hits the engagement groove with its elastic force. At this time, a clear click sound can be generated. For this reason, since the operator can easily recognize that the lid member has been securely locked by the occurrence of the click sound, the pushing of the lid member does not become insufficient.

(Solution 7)
In the present invention, the lid member is preferably formed from a metal plate. In this case, the lid member can be easily manufactured by sheet metal processing, and since it is not melted by cigarette fire (heat) after being attached to the substrate box, it is illegal against the lid member made of resin. Stronger and more durable.

  Since the gaming machine of the present invention has a structure that is extremely difficult to perform fraudulent acts on the lid member, when the board box is opened, the unsealing mark is surely left, so that unauthorized modification of the control board is strongly suppressed. Can do.

  Hereinafter, the form for implementing this invention is demonstrated taking a pachinko machine as an example. However, the gaming machine of the present invention is not limited to a pachinko machine or the like, and as described above, it can be implemented by variously modifying its model.

  FIG. 1 shows a game board 1 used in a pachinko machine from the back side. As is well known, the game board 1 has a game area on the front surface thereof, which includes a game ball guide rail, a number of obstacle nails, a windmill, various winning holes, various bonuses, decorative lamps, A decorative body, a symbol display device and the like (none of which are shown) are arranged.

  On the other hand, as shown in FIG. 1, a board box 2 is mounted on the back of the game board 1, and a control board (for example, a main board) is accommodated in the board box 2. A control circuit including a CPU, a RAM, a ROM, a counter, and the like is formed on the control board, and a control program for controlling a game operation of the pachinko machine is executed in the control circuit. In addition, since a well-known thing is applicable about a control board, the description is abbreviate | omitted with illustration here.

  FIG. 2 specifically shows the substrate box 2. The board box 2 in this example has a laterally long outer shape, and is mounted on the game board 1 with the long side portion being upside down as shown in FIG. The board box 2 has an outer case body 2a and an inner case body 2b. In the illustrated example, the board box 2 is configured in a state where the outer case body 2a and the inner case body 2b are combined in the front-rear direction. Of these, one outer case body 2a is attached to the outside away from the game board 1, and the other inner case body 2b is attached to the outer case body 2b so as to cover the back side of the game board 1. One of the outer case body 2a and the inner case body 2b serves as a box body and the other serves as a cover body, but is not particularly limited in the case of this embodiment. Therefore, the outer case body 2a can be a box body and the inner case body 2b can be a cover body. Conversely, the outer case body 2a can be a cover body and the inner case body 2b can be a box body. In any case, one substrate box 2 is configured by combining at least the outer case body 2a and the inner case body 2b.

  Sealing portions 4 are formed at positions on both sides of the substrate box 2 at the upper positions. Each of these sealing portions 4 has a box shape and protrudes in an ear shape from both side ends of the substrate box 2 to the side.

  3 and 4 specifically show one (right side in this example) sealing portion 4. As shown in FIG. 4, the sealing portion 4 is also configured by combining the outer case body 2 a and the inner case body 2 b in the same manner as the substrate box 2. Therefore, the outer case body 2 a, Projections 4a and 4b, which are part of the sealing part 4, are formed on 2b.

  As shown in FIGS. 3 and 4, a plurality of (four in this example) insertion holes 6 are formed in the sealing portion 4. These insertion holes 6 form a line in the vertical direction, and each insertion hole 6 extends through the sealing portion 4 in the horizontal direction (in this example, the front-rear direction). 3 and 4, only the uppermost insertion hole 6 is shown in detail, but the insertion hole 6 has a cross-sectional angular shape in the protrusion 4a located on the near side (side away from the game board 1) as seen in the figure. None, and conversely, the projection 4b located on the back side (side closer to the game board 1) has a circular cross section.

  5 and 6 show the inner surface shapes of the outer case body 2a and the protrusion 4a, that is, the shape of the outer case body 2a shown in FIG. 4 as viewed from the opposite side (the direction of the inner case body 2b). In the protruding portion 4a of the outer case body 2a, three horizontal grooves 8 are formed between the adjacent insertion holes 6, and these horizontal grooves 8 are inserted from the inner surface of the protruding portion 4a shown in FIG. Along the horizontal direction (the back side of the game board 1). However, the lateral groove 8 does not reach the outer surface of the protruding portion 4a, and therefore a predetermined thickness is left on the outer surface portion of the protruding portion 4a. Further, the protruding portion 4 a is formed with a longitudinal groove 9 extending vertically along the row of the insertion holes 6, and all of the above-described lateral grooves 8 are connected to the longitudinal groove 9. Similarly, the vertical groove 9 does not reach the outer surface of the protruding portion 4a.

  In addition, as shown in FIGS. 5 and 6, a boss 4 c that protrudes around the insertion hole 6 is formed on the inner surface of the protrusion 4 a. On the other hand, as shown in FIGS. 3 and 4, the protrusion 4 b of the inner case body 2 b has recesses 4 d formed on the inner surface thereof, and these recesses 4 d extend around the insertion hole 6. Therefore, when the outer case body 2a and the inner case body 2b are combined with each other, the inner surfaces of the projecting portions 4a and 4b are in close contact with each other, and the individual boss portions 4c are fitted into the corresponding recesses 4d. It has become.

  7 to 9 specifically show the structure of the sealing portion 4. First, as shown in FIG. 7, the sealing portion 4 is formed in a state where the outer case body 2a and the inner case body 2b are combined, and at this time, the insertion hole 6 penetrating the inside of the sealing portion 4 is formed. Is formed. In this state, in the sealing portion 4, the fastener 10 is inserted into the insertion hole 6 from the direction of the outer surface of the outer case body 2 a, and the outer case body 2 a and the inner case body 2 b are fastened to each other by the fastener 10. It has become a thing.

  More specifically, the fastener 10 is configured by combining a one-way screw 10a and an anchor pin 10b, and these are inserted into the insertion hole 6 with the anchor pin 10b at the head. Further, the anchor pin 10b is formed with a square flange portion 10c around the screw-in opening, and this square flange portion 10c hits the intermediate bottom surface 6a located in the innermost part of the outer case body 2a in the insertion hole 6, Therefore, the insertion of the anchor pin 10b is stopped. At this time, the anchor pin 10b is inserted into the inner case body 2b beyond the intermediate bottom surface 6a only from the square flange portion 10c.

  Further, as viewed in the direction of insertion into the insertion hole 6, a cut (for example, four divisions) is formed at the tip of the anchor pin 10b, and a tapered taper hole is formed inside the cut. For this reason, as shown in FIGS. 8 and 9, the tip portion of the anchor pin 10b is expanded in the radial direction by screwing the one-way screw 10a.

  Here, as already described, the insertion hole 6 has a circular cross section in the protruding portion 2b of the inner case body 2b, and here, the insertion hole 6 has a stepped hole shape (three steps in this example). The inner diameter of the fastener 10 is formed so as to go deeper in the insertion direction of the fastener 10. For this reason, when the tip end portion of the anchor pin 10b is expanded, the outer surface of the anchor pin 10b comes into contact with the inner wall 6b of the stepped portion of the insertion hole 6 to prevent it from coming out. Thereby, as a result of the outer case body 2a and the inner case body 2b being fastened to each other in the sealing portion 4, the substrate box 2 is sealed in an unopenable manner.

  After the substrate box 2 is sealed by the fastener 10 as described above, the lid member 12 is further inserted into the insertion hole 6 (see FIG. 8). The lid member 12 shields the fastener 10 when viewed from the entrance / exit of the insertion hole 6, and in particular, the tool can be prevented from approaching (accessing) the one-way screw 10 a (see FIG. 9).

  FIG. 10 shows the lid member 12 more specifically. The lid member 12 can be formed from, for example, a metal plate. The lid member 12 includes a rectangular flat plate-like main body portion 12a, and a pair of opposite sides of the main body portion 12a are formed with a pair of flange portions 12b on both sides. These flange portions 12b are formed so as to be bent at a substantially right angle from the main body portion 12a, whereby the rigidity of the lid member 12 is enhanced. Furthermore, a pair of locking pieces 12c on both sides is formed on the other set of opposite sides, and these locking pieces 12c are also formed so as to be bent from the main body portion 12a.

  When such a lid member 12 is inserted into the insertion hole 6, it is desirable to prepare an insertion tool T with a magnet at the tip as shown in FIG. 8, for example. The tool T has a handle for convenience of work, and the main body portion 12a of the lid member 12 is adsorbed to the tip of the tool T. At this time, if the locking piece 12c faces the tool T, the lid member 12 can be inserted into the insertion hole 6 as it is. Moreover, by using such a tool T, it is not necessary to pick the locking piece 12c with tweezers or the like, for example, and the workability of insertion is improved. In particular, since the lid member 12 is relatively small in size, its handling becomes extremely convenient if adsorption by a magnet or the like is used.

  Further, as apparent from the cross section shown in FIG. 7, the pair of locking pieces 12 c extend in the direction opposite to the insertion direction into the insertion hole 6. In particular, these locking pieces 12c are expanded in a divergent shape toward the tip, and the maximum distance D between the pair of locking pieces 12c is set to be larger than the inner method H of the insertion hole 6. (D> H).

  For this reason, when the lid member 12 is inserted into the insertion hole 6, the outer surfaces of the pair of locking pieces 12 c come into contact with the opening edges of the entrances and the first catches are generated. When the lid member 12 is pushed further from here, the pair of locking pieces 12c are guided along the inner wall 6c (guide portion) of the insertion hole 6 as shown in FIG. 12c is elastically deformed in a direction close to each other. In this embodiment, guide grooves 6e are formed in pairs at the opening edge of the entrance / exit of the insertion hole 6, and these guide grooves 6e are formed corresponding to the locking pieces 12c, respectively. The guide groove 6e has a width dimension slightly larger than the width W of the locking piece 12c. Therefore, when the lid member 12 is inserted, the locking piece 12c is guided by the guide groove 6e and smoothly elastically deformed, so that it is easy to push the lid member 12 into the insertion hole 6 as it is.

  The inner wall 6c of the insertion hole 6 is formed with a pair of engaging grooves 6d on both sides at a position closer to the inner wall 6c, and these engaging grooves 6d are also slightly wider than the width W of the locking piece 12c. Have dimensions. These engagement grooves 6 d extend linearly from the intermediate bottom surface 6 a of the insertion hole 6 toward the entrance and exit, and the ends thereof are positioned in the middle of the insertion hole 6. When the lid member 12 is pushed from the state of FIG. 8 to a position just above the head of the one-way screw 10a, the pair of locking pieces 12c are just inserted into the engaging grooves 6d on both sides as shown in FIG. Each can be fitted.

  At this time, the pair of locking pieces 12c are naturally restored to their original postures by their elastic force, and therefore are allowed to expand into a divergent shape. Further, the pair of locking pieces 12c have their tips just engaged with the ends of the engaging groove 6d, and in this state, the pair of locking pieces 12c is restricted from being displaced in the direction opposite to the insertion direction. For this reason, the position of the lid member 12 immediately above the head of the one-way screw 10a is the locking position, and the fastener 10 can be reliably shielded at the locking position.

  Further, when the locking piece 12c is engaged with the engaging groove 6d at the locking position, when the locking piece 12c is expanded by the elastic force, the groove bottom surface of the engaging groove 6d is hit, and thus a clear click sound is generated. appear. For this reason, the operator can recognize that the lid member 12 is securely locked at the locking position only by confirming the click sound, and does not need to reexamine the locking state of the lid member 12. .

  When the lid member 12 is locked at the locking position as described above, the magnet T is easily released by simply pulling out the tool T, and only the lid member 12 remains in the insertion hole 6. It becomes a state. Two lid members 12 are used for each substrate box 2, and the lid members 12 are respectively attached to the sealing portions 4 on both sides thereof.

  On the other hand, when the lid member 12 in the locking position is viewed from the entrance / exit of the insertion hole 6, the end of the locking piece 12 c is fitted in the engagement groove 6 d and hidden, so that it is locked from the entrance / exit direction. It is extremely difficult to pull the piece 12c or to pick the pair of locking pieces 12c using tweezers or the like. Needless to say, since the opposite side of the insertion hole 6 is blocked by the anchor pin 10b, any operation cannot be applied to the locking piece 12c therefrom.

  Furthermore, in this embodiment, since the lid member 12 is formed from a metal plate, not only is the processing easy, but it has a strong resistance to heat. For this reason, for example, even if a person who intends to cheat brings a cigarette fire or a lighter flame closer, the lid member 12 cannot be melted.

  Thus, in this embodiment, since it is difficult for the cover member 12 to be fraudulent, it is extremely difficult to further loosen the one-way screw 10a after removing this. Therefore, it can be said that it is virtually impossible to open the substrate box 2 without leaving any trace.

  Further, in the case of the present embodiment, since the guide groove 6e is formed on the same line as the engagement groove 6d located at the back of the guide groove 6e, the direction of the pair of locking pieces 12c is changed to the guide groove 6d when the lid member 12 is inserted. If this is matched, the pair of locking pieces 12c can be reliably engaged with the engaging grooves 6d simply by pushing the lid member 12 into the insertion hole 6 as it is. For this reason, it is not necessary to visually confirm the position of the engaging groove 6d before inserting the lid member 12, and the workability is further improved.

  11 and 12 show an example of a preferable opening procedure for the substrate box 2. When the substrate box 2 is opened, the triangular protrusion 14 formed on the sealing portion 4 is first cut off as shown in FIG. At this time, an opening is formed in the front surface of the outer case body 2a, and a part of the horizontal groove 8 and the vertical groove 9 is exposed to the front surface through the opening.

  Next, the projecting portion 4a is cut along predetermined cutting lines CL1 and CL2, and all the openings from the front surface to the upper surface and side surfaces are cut off. At this time, in order to facilitate the cutting operation, a notch N may be provided on the side surface of the protruding portion 4a.

  When the projection 4a is cut along the cutting lines CL1 and CL2, the outer case body 2a and the inner case body 2b can be separated as shown in FIG. At this time, the fastener 10 is left in the inner case body 2b, and what is originally a part of the outer case body 2a is fastened to the periphery without being separated.

  Thereafter, when the substrate box 2 is sealed again, the fastener 10 is inserted into the remaining insertion hole 6 (for example, the second step from the top), and the outer case body 2a and the inner case body 2b are fastened to each other. The lid member 12 is inserted to securely shield it. Therefore, when the board box 2 is opened for some reason, the trace always remains clearly, and it is obvious that the board box 2 has been opened illegally when there is no official record accompanying the inspection of the public security organization. Become.

The present invention is not limited to the above-described embodiment, and can be implemented with various modifications.
FIG. 13 shows an embodiment in which the insertion hole 6 is deformed as an example. In this case, the engaging groove 6d is not formed in the insertion hole 6, but a pair of engaging protrusions 6f on both sides are formed instead. Each of these engaging protrusions 6f protrudes inward from the inner wall 6c, and the engaging protrusion 6f is engaged with the engaging piece 12c in a state where the lid member 12 is in the engaging position as shown in the figure.

  In the case of the embodiment of FIG. 13, when the lid member 12 is inserted, the pair of locking pieces 12c are hardly elastically deformed or only slightly elastically deformed. It will be deformed. In this case, when the pair of locking pieces 12c get over the corresponding engaging protrusions 6f by pushing the lid member 12, the elastic deformation is restored, so that the engaging protrusions 6f can be engaged. Since the engaging protrusion 6f has an inclined surface that descends inward from the inner wall 6c at a position close to the entrance / exit of the insertion hole 6, it is possible to satisfactorily guide the locking piece 12c along the inclined surface. it can. However, even if such an inclined surface is not particularly formed, it goes without saying that the locking piece 12c is easily elastically deformed by simply pushing the lid member 12.

  Next, FIG. 14 shows a lid member 16 having a different form. In this case, the lid member 16 has a circular flat plate-like main body portion 16a and a curved flange portion 16b along the periphery thereof. Similarly, the lid member 16 has a pair of locking pieces 16c extending in the opposite direction when viewed in the insertion direction into the insertion hole 6, and these locking pieces 16c are divergent in the direction opposite to the insertion direction. It is expanding. Even when the lid member 16 in the form of FIG. 14 is used, an illegal and difficult structure can be realized as in the first embodiment. In this case, also in the outer case body 2a, it is preferable that the insertion hole 6 is formed in a circular cross section in accordance with the outer shape of the lid member 16.

  In one embodiment, two sealing portions 4 are formed on both side edges of the substrate box 2, but there are no particular restrictions on the position and number of the sealing portions 4. Moreover, the number of the insertion holes 6 in the sealing part 4 can be increased / decreased as needed, and the arrangement direction is not limited.

  In the embodiment, the outer case body 2a and the inner case body 2b are separable, but they may be connected by a connecting means such as a hinge (including a self-hinge). In this case as well, the inside of the substrate box 2 can be sealed in the same manner as in the embodiment by forming the sealing portion 4 at a portion where the outer case body 2a and the inner case body 2b can be opened and closed. .

  Further, the outer case body 2a may be slidably attached to the inner case body 2b, or only one of the outer and inner case bodies 2a and 2b has a box shape and the other is simply a plate. It may be of a shape. For example, the inner case body 2b may have a box shape different from that shown in the figure, and the opening may be slid by the outer case body 2a having a slide plate shape to accommodate the control board. In this case, the sealing portion 4 is formed between the box-shaped inner case body 2b and the slide plate-shaped outer case body 2a.

  Further, in one embodiment, the sealing portion 4 is formed integrally with the substrate box 2, but the sealing portion 4 may have a separate structure from the substrate box 2, or the outer case body 2a or the inner case. A structure having an integral part with only one of the bodies 2b may be used.

  The configuration of the fastener 10 described in the embodiment is merely a preferable example, and the fastener 10 includes other configurations. Therefore, for example, a structure in which the outer case body 2a and the inner case body 2b are screwed together with only the one-way screw 10a may be used, or a combination of bolts and nuts may be used as the fastener 10.

  In the embodiment, only one pair of the locking pieces 12c is provided, but there is no particular limitation on the arrangement and number of the locking pieces 12c. Therefore, a plurality of pairs of locking pieces 12c may be provided around the lid member 12, or the locking pieces 12c may be arranged asymmetrically.

  Further, in FIGS. 7 to 9, the end (lower end) of the engagement groove 6d does not need to reach the intermediate bottom surface 6a of the insertion hole 6, and particularly if the engagement piece 12c can be received at the engagement position. There is no restriction on the length.

  In addition, since the engaging groove 6d can be formed in the entire surface of the inner wall 6c in the insertion hole 6, it is possible to align the locking piece 12c with the engaging groove 6d when the lid member 12 is inserted. The engaging piece 12c can be reliably engaged with the engaging groove 6d by simply inserting the lid member 12 as it is.

  In addition, although the main board is cited as the control board in each of the above-described embodiments, the board box 2 mainly includes a control board (for example, a sub board, an effect control board, etc.) or a liquid crystal for controlling the effects accompanying the progress of the game. A control board or the like can also be accommodated.

It is a rear view of a game board. It is a perspective view of a substrate box. It is the perspective view which expanded and showed the sealing part. It is a disassembled perspective view of a sealing part. It is the perspective view which showed the outer case body from the inner surface side. It is a rear view of an outer case body. In FIG. 2, it is the figure which showed the structure of the sealing part by the cross section which follows the VII-VII line. It is the figure which showed the state when a cover member was inserted in the insertion hole by the cross section similar to FIG. It is the figure which showed the state when a cover member was pushed in to the latching position from the state of FIG. It is a perspective view of a lid member. It is a figure for demonstrating the opening procedure of a board | substrate box. It is a figure for demonstrating the opening procedure of a board | substrate box. It is the figure which showed the sealing part of the form different from FIGS. It is the perspective view which showed the modification of the cover member.

Explanation of symbols

2 board box 2a outer case body 2b inner case body 4 sealing part 6 insertion hole 6c inner wall (guide part)
6d engagement groove (engagement part)
6e Guide groove 10 Fastener 12 Lid member 12a Main body portion 12c Locking piece

Claims (1)

In a gaming machine comprising a control board on which a control circuit for controlling a gaming operation is formed, and a board box capable of accommodating the control board between at least a box body and a cover body combined therewith,
A sealing portion that is formed in the substrate box and seals the inside of the substrate box in an unopenable manner by fastening the box body and the cover body to each other using a predetermined fastener;
An insertion hole formed in the sealing portion for inserting the fastener;
A gaming machine comprising: a lid member that shields the fastener when viewed from the entrance / exit of the insertion hole by being inserted into the insertion hole in a state of being fastened by the fastener.

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