JP4150111B2 - Circuit board case - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a circuit board case that is attached to a game machine and protects a circuit board that includes a plurality of electronic components that electronically control game content.
[0002]
[Prior art]
Conventionally, a game machine such as a pachinko machine can obtain a special game value by electronic control. A substrate on which a central processing unit (hereinafter referred to as a CPU), a storage element (hereinafter referred to as a ROM), etc., which are hardware for this electronic control, are mounted together with other conductive components, etc. It is covered with a protective cover to protect it from.
[0003]
The protective cover is a case made of synthetic resin, and is composed of a main body base and a main body cover. When it is necessary to inspect the entire board or the like, the engaging portion of the case is opened.
[0004]
In addition, the main body cover is provided with a small window that can be opened and closed in advance, and there is a structure that can be operated only by opening the small window when inspecting or replacing the ROM.
[0005]
[Problems to be solved by the invention]
However, if the main body cover and the main body base are made detachable, there is a possibility that unauthorized modification may be performed. At present, the main body cover and the main body base must be firmly fixed. Therefore, at the time of the above-described inspection or the like, there is a case where the fixing portion is destroyed and replaced with a new main body cover and main body base.
[0006]
In consideration of the above-mentioned facts, the present invention provides a circuit board case that can prevent unauthorized modification of a board and can close a body base and a body cover that are opened during inspection tightly multiple times. Objective.
[0007]
[Means for Solving the Problems]
The invention according to claim 1 is a circuit board case which is attached to a game machine and protects a circuit board provided with a plurality of electronic parts for controlling the contents of the game. Each of the sides has a rail portion, one of the other pair of opposite sides has a stopper portion, and the other is open, and the other side of the rail portion of the body base can be accommodated. Rail section Each of Slidable against the guide part and the stopper part Touched The guide portion is slid from the open portion of the main body base to be accommodated in the rail portion, and the tip portion is abutted against the stopper portion. contact A state where the circuit board is protected by covering the surface of the circuit board opposite to the support surface of the main body base with a predetermined space, and a covering release state where the circuit board is uncovered. And fixing the main body base and the main body cover by fixing a portion facing the stopper portion of the main body base and a portion facing the tip portion of the main body cover in the mounted state. A plurality of fixing positions by the fixing means, and each time the circuit board of the main body cover is uncovered, the fixing positions by the fixing means are cut off and sequentially new fixing positions are provided. It is characterized by re-fixing with.
[0008]
According to the first aspect of the present invention, a circuit board for electronically controlling the game content is attached to the back of the game machine. This circuit board is provided with a large number of electronic components including IC chips such as CPU, ROM, and RAM, and in particular, by changing the IC chip such as ROM, the probability of a special game value can be changed. . For this reason, by accommodating the circuit board in the case, the electronic components on the circuit board are protected from contact with the outside, and unauthorized replacement of an IC chip such as a ROM is prevented.
[0009]
The circuit board case is constituted by a main body base and a main body cover, and the circuit board is supported by the main body base and is covered and protected by the main body cover.
[0010]
By the way, the main body cover has a structure capable of taking a covering release position for releasing the covering of the circuit board and a mounting position for protecting the circuit board with respect to the main body base.
[0011]
Here, at the mounting position of the main body cover, the fixing means Fix the body base and body cover by fixing the part facing the stopper part of the body base and the part facing the tip of the body cover. Fix it.
[0012]
If the fixing means tries to release the fixing illegally, a part or all of the fixing means is damaged, and the trace can be left.
[0013]
On the other hand, when the circuit board is inspected with the body cover as the covering release position, the fixing means used for fixing is cut off. Thereby, the main body cover can move from the mounting position to the covering release position with respect to the main body base.
[0014]
After the inspection, in order to protect the circuit board again by the main body cover, the circuit board is moved to the mounting position and re-fixed by using a new fixing means. That is, the number of fixing means decreases every time the main body cover is moved from the mounting position to the covering release position. For this reason, if a necessary number is prepared in advance (for example, at least four fixing means are set in advance if three times of opening are necessary), unauthorized opening can be prevented. It is possible to set the cover to the circuit board covering release position.
[0015]
The invention according to claim 2 is the invention according to claim 1, wherein the main body cover is provided. A portion in which a small window having a first cutout portion is formed in part, and a small cover in which a second cutout portion that fits the first cutout portion is formed and opens and closes the small window. In the state where the first cutout portion and the second cutout portion are fitted together and the small window is closed with the small cover, the small cover is attached to the stopper portion of the main body base by the fixing means. The main body cover and the main body base are fixed by fixing to the facing portions. It is characterized by that.
[0016]
According to the second aspect of the present invention, when only the ROM inspection is performed, a small part provided on a part of the main body cover is provided. cover When inspecting the entire circuit board, the parts to be released are different, such as releasing the main body cover and the main body base, and the parts to be released can be arbitrarily selected as necessary, leaving the respective release traces. Can do.
[0017]
The invention described in claim 3 is characterized in that, in the invention described in claim 1 or 2, the plurality of fixed positions are arranged close to each other.
[0018]
According to the invention described in claim 3, since the fixing positions of the plurality of fixing means are arranged close to each other, the efficiency is high in performing the work.
[0019]
The invention according to claim 4 is the invention according to any one of claims 1 to 3, wherein the circuit board is fixed to the body cover. Octopus It is characterized by.
[0020]
According to the fourth aspect of the present invention, the back surface (pattern surface) of the circuit board can be easily inspected by releasing the main body cover and the main body base.
[0021]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows a surface of a pachinko game machine 10 according to the first embodiment, that is, a game board surface. A region surrounded by the arc-shaped rail 12 on the surface of the game board is a gauge portion 14 that is a game region.
[0022]
A plurality of nails 16 are driven into the gauge portion 14 over the entire surface (only the main nails 16 are shown in FIG. 1), and pachinko balls driven out through the rails 12 hit the nails and are formed by the nails 16. It is going to fall while being guided by the guideway. In addition to the nail 16, a windmill 18 is attached at a symmetrical position toward the gauge portion 14 to change the direction of the pachinko ball in an unexpected direction.
[0023]
Further, the gauge section 14 is provided with a winning opening 20 at a plurality of positions, and when a pachinko ball enters the winning opening 20, a predetermined number of pachinko balls are supplied to the player.
[0024]
Such a gauge part 14 is made into the substantially left-right symmetric form, and the electrically-driven accessory unit 22 is arrange | positioned in the center part, The display part 24 is exposed. Below the display unit 24, a start winning opening 26 for starting the electric accessory unit 22 is provided.
[0025]
A large winning opening 28 is arranged further below the start winning opening 26 and is open for a predetermined time in a so-called winning display state on the electric accessory unit 22 so that a large number of pachinko balls can be won. It has become.
[0026]
FIG. 2 shows an enlarged view of the display unit 24 of the electric accessory unit 22 arranged on the game board surface of the pachinko game machine 10.
[0027]
The display unit 24 of the electric accessory unit 22 includes a 2 × 3 matrix, that is, six symbol display surfaces 25.
[0028]
The symbols displayed on the symbol display surface 25 are displayed in a predetermined order, and are controlled by a plurality of electronic components mounted on a circuit board 30 to be described later. For example, it is a big hit when the same pattern (for example, (7, 7, 7)) is arranged in a horizontal row.
[0029]
Moreover, the schematic of the back surface of the pachinko game machine 10 which concerns on this Embodiment is shown by FIG.
[0030]
A circuit board case 32 in which the circuit board 30 is housed is attached to the center left side of the back surface of the pachinko game machine 10. In addition, the direction which becomes an upper part in the attachment state to the pachinko game machine 10 in the circuit board case 32 is shown by an arrow A, and the direction is clarified by this arrow A in other drawings.
[0031]
The circuit board case 32 is attached so that the connector portion 44 is positioned on the right side (near the center). The connector part 44 is exposed to the outside of the circuit board case 32. At the beginning of the molding of the circuit board case 32, all parts corresponding to the connector part 44 are closed.
[0032]
When the model of the circuit board is determined, the position of the connector portion 44 is recognized, and only the portion corresponding to this portion is post-processed. That is, the body cover 32B, which will be described later, is provided with a thin molded portion 46 at a position that may correspond to the connector portion 44, thereby facilitating a penetration operation during post-processing. This is because the connector portion 44 may have a different position depending on the model. As a result, an unnecessary portion (a portion that is an attachment portion of the connector portion 44 but is not attached) is kept closed by the thin-walled molding portion 46.
[0033]
As shown in FIG. 4, the circuit board 30 has a rectangular board on which a plurality of electronic components including an IC chip such as a CPU 52, a ROM 42, and a RAM are attached, and the game board surface of the pachinko game machine 10 is provided by these electronic components. The electric accessory unit 22 and the like arranged in are controlled. The circuit board 30 is covered with a circuit board case 32 at the time of manufacture in order to protect the circuit board 30 from contact with other conductive parts, impact, and the like.
[0034]
5 to 8 show a circuit board case 32 according to the present embodiment.
[0035]
A transparent hard case made of synthetic resin is used as the circuit board case 32, and is constituted by a main body base 32A that supports the circuit board 30 and a main body cover 32B that covers the circuit board 30.
[0036]
The circuit board 30 is fixed by being screwed at two locations in the vicinity of the opening end of the main body cover 32B. In this state, the surface (surface on which electronic components are arranged) of the circuit board 30 is covered with a main body cover 32B with a predetermined space.
[0037]
On the other hand, the back surface of the circuit board 30 is covered with the main body base 32A.
[0038]
That is, a substantially U-shaped rail portion 33 is formed on the pair of short sides of the main body base 32A. The inner width dimension BW (see FIG. 6) of the rail part 33 is substantially the same as the height dimension CW (see FIG. 6) of the guide part 35 formed on the short side of the opening end of the main body cover 32B. It is said that. However, the guide portion 35 is accommodated in the guide groove of the rail portion 33 and has a slidable dimensional tolerance (ΔW) (BW = CW + ΔW).
[0039]
Here, one of the long sides of the main body base 32A is open, and the other is formed with a stopper portion 37. Thus, the main body cover 32B is opposed to one of the long sides of the main body base 32A from the state where the main body cover 32B and the main body base 32A are separated (covering release position) (see FIG. 12), and the guide portion 35 Is inserted into the rail portion 33 (see FIG. 13), and the body cover 32B is slid and inserted until the tip of the body cover 32B comes into contact with the stopper portion 37 of the body base 32A. It can be superimposed on 32A to be the mounting position.
[0040]
Since the circuit board case 32 is transparent, the circuit board 30 accommodated in the circuit board case 32 can be visually observed without being removed from the circuit board case 32. Thereby, it is possible to easily perform an appearance inspection in a state where an abnormality of an electronic component attached on the circuit board 30 is accommodated in the circuit board case 32. Further, a plurality of circular holes 62 are provided on the side surface of the main body cover 32B, and serve as ventilation holes. The circular hole 62 is limited to the side surface and has a diameter of 2 mm or less. As a result, a tool capable of operating an electronic component such as a wire or tweezers cannot enter from the circular hole 62. In addition, since the rigidity of a wire, a piano wire, or the like having a diameter of 2 mm or less is low, it is not useful because it is bent or bent with a small resistance. Further, since the circular hole 62 is provided only on the side surface, the structure cannot linearly reach the target position.
[0041]
The main body cover 32B is provided with an opening window 60 so as to straddle the side surface and the ceiling surface.
[0042]
A small cover 64 is detachably attached to the opening window 60, and the opening window 60 is closed.
[0043]
The small cover 64 has a shape obtained by bending a flat plate into a substantially L shape. A first comb-shaped notch 66 is integrally formed at the tip of the surface corresponding to the ceiling of the small cover 64. Corresponding to the first comb-shaped notch 66, a second comb-shaped notch 68 protrudes inward from the periphery of the opening window 60 in the ceiling of the main body cover 32B and the inner surface of the main body cover 32B. It is formed to do. The irregularities of the first and second comb-shaped notches 66 and 68 are staggered so that they fit closely together. A thin plate 70 (see FIG. 6) is integrally formed (or pasted) on the lower surface of the second comb-shaped notch 68 (the inner surface of the main body cover 32B). In addition, about half of the back side of the second comb-shaped notch 68 is thin relative to the thickness of the main body cover 32B. A thin portion 66B corresponding to the thick portion 66A on the base side is formed at the distal end portion of the first comb-shaped notch portion 66 corresponding to the back side.
[0044]
Here, when the first comb-shaped notch portion 66 is fitted with the second comb-shaped notch portion 68, the thin-walled portion 66B of the first comb-shaped notch portion 66 is the second comb-shaped notch portion. The thick portion 66A is positioned directly above the thin plate 70, and the outer surface of the main body cover 32B and the outer surface of the small cover 64 are flush with each other.
[0045]
On the other hand, long grooves 72 are formed at both ends of the small cover 64 in the width direction (long side direction). Correspondingly, protrusions 74 having a thickness dimension substantially matching the width dimension of the long groove 72 are formed at both ends in the width direction of the surface corresponding to the ceiling portion of the opening window 60 so as to face each other. ing.
[0046]
For this reason, the small cover 64 has the ceiling portion matched with the height of the ceiling portion of the main body cover 32B, the end portion of the projection 74 is accommodated in the long groove 72, and is slid and moved. The comb-shaped notches 66 and 68 can be fitted together.
[0047]
Here, since the long groove 72 and the protrusion 74 are staggered in a plan view of the main body cover 32B, an opening continuous in the vertical direction in the plan view is eliminated. Since the thin plate 70 is positioned in the gap between the first and second comb-shaped notches 66 and 68 in a state where the small cover 64 substantially closes the opening window 60, the first and second Even in the gap between the comb-shaped notches 66 and 68, an opening continuous in the vertical direction in plan view of the main body cover 32B is eliminated.
[0048]
A protrusion 76 is formed on the peripheral edge corresponding to the side surface of the opening window 60 so as to face each other, and serves as a stopper when the small cover 64 is slid, and is laterally seen in a plan view of the main body cover 32B. Elimination of continuous openings in direction.
[0049]
As shown in FIGS. 7 to 9, the small cover 64 is fixed to an end portion (hereinafter referred to as a lower end portion) directed to the main body base 32A and a bracket 39 extended from the main body cover 32B in the direction of the main body base 32A. A first cylindrical unit 100 constituting a part of the means is integrally formed. Although the bracket 39 is fixed to the main body cover 32B, it goes without saying that the bracket 39 may be integrally formed.
[0050]
Since these first cylinder units 100 have the same structure, the first cylinder unit 100 provided in the main body cover 32B will be described as an example, and the first cylinder unit 100 provided in the small cover 64 will be described. The description of 100 is omitted.
[0051]
The first cylindrical unit 100 includes four cylindrical members 102 on the main body cover 32B side and eight cylindrical members 102 on the small cover 64 side.
[0052]
The cylindrical member 102 is juxtaposed along the side of the lower end portion of the bracket 39. These cylindrical members 102 are respectively connected to the lower end portion of the bracket 39 by the main connecting piece 104. Further, the cylindrical members 102 are connected to each other by a sub-connecting piece 106.
[0053]
As shown in FIG. 10, inside the cylindrical member 102, a screw 110 is accommodated in which a groove on the head portion that fits the screw driver 106 is a plus groove 108. The screw 110 is formed with a male screw 112 from the tip to the middle in the axial direction, and a ring-shaped groove 114 is formed at the base of the male screw 112. Here, in the state in which the screw 110 is accommodated, a closing lid 118 provided with a plus-type through hole 116 corresponding to the plus groove 108 is attached to the opening of the cylindrical member 102. The closing lids 118 are connected by connecting pieces 119 at the same pitch as the arrangement pitch of the cylindrical members 102, and the openings of the four cylindrical members 102 are simultaneously closed.
[0054]
On the other hand, in a state where the main body cover 32B is overlapped with the main body base 32A and set to the mounting position, the first cylindrical unit is located at a position coaxial with each cylindrical member 102, that is, on the lower surface of the main body base 32A. A second cylindrical unit 120 that constitutes an engaging member together with 100 is integrally formed.
[0055]
The periphery of the second cylindrical unit 120 is covered with one large rectangular parallelepiped block 122, and four circular holes 124 are formed on one surface of the block 122 along the longitudinal direction. A part of the cylindrical body forming the circular hole 124 protrudes from the lower surface of the block 122 to form an arc shape 122A.
[0056]
The arrangement pitch of the circular holes 124 is the same as the arrangement pitch of the cylindrical members 102 of the first cylindrical unit 100.
[0057]
A screw 110 is screwed into the inner peripheral surface of the circular hole 124. The inner peripheral surface of the circular hole 124 before the screw 110 is screwed is a simple cylinder. The opening of the circular hole 124 is located on the bottom surface of the long hole 128 (see FIG. 8) that accommodates the four circular holes 124.
[0058]
On the bottom surface of the long hole 128, a metal thin engagement plate 130 as a one-direction limiting member is placed. The engagement plate 130 is formed with circular holes 132 having the same pitch as that of the four circular holes 124.
[0059]
Inside the circular hole 132 of the engagement plate 130, a plurality of pieces 134 are provided in the axial direction. As shown in FIG. 11, the diameter when the tip of the section 134 is continuously connected is slightly smaller than the diameter of the screw 110.
[0060]
In addition, a holding plate 136 made of synthetic resin is fitted into the long hole 128, and the engagement plate 130 is sandwiched and fixed at a predetermined position (a position where the circular holes 124 and 132 are coaxial with each other).
[0061]
The holding plate 136 is formed with a ring-shaped protrusion 136A so as to closely fit the end surface of each cylindrical member 102 of the first cylindrical unit 100.
[0062]
Here, when the screw 110 accommodated in the cylindrical member 102 of the first cylindrical unit 100 is screwed into the circular hole 124 of the second cylindrical unit 120 while being screwed, the screw 110 elastically moves the section 134 in the advancing direction. It is screwed while being deformed, and when the tightening is completed, the distal end portion of the section 134 enters the ring-shaped groove 114 provided in the screw 110.
[0063]
For this reason, even if the screw 110 is to be unscrewed, the screw 110 cannot be pulled out by fitting the section 134 and the ring-shaped groove 114.
[0064]
The mounting position of the main body cover 32B and the main body base 32A is fixed using one of the four cylindrical members 102. When the opening window 60 is closed by the small cover 64, two of the eight cylindrical members 102 are fixed.
[0065]
Here, the main body cover 32 </ b> B is in a state in which the main connecting piece 104 and the sub connecting piece 106 of the first cylindrical unit 100 are cut off with a nipper or the like so that the fixed portion remains in the second cylindrical unit 120. It can be removed. The main connecting piece 104 and the sub connecting piece 106 are preferably connected with a predetermined space (1.5 mm or more) so as to be easily cut off.
[0066]
In the present embodiment, since there are four fixing means for fixing the main body cover 32B and the main body base 32A, each of them is used one by one, so that the three times of opening and the last fixing can be repeated.
[0067]
Here, the circuit board 30 accommodated in the circuit board case 32 attached to the pachinko game machine 10 may require inspection. In this case, it is necessary to separate the main body cover 32B and the main body base 32A (shift to the covering release position). In such a case, as described above, by cutting off the fixed portion, the main body cover 32B can be slid and the circuit board 30 screwed to the main body cover 32B can be removed for inspection.
[0068]
The operation of this embodiment will be described below.
[0069]
The electric accessory unit 22 provided on the game board surface of the pachinko game machine 10 is controlled by a plurality of electronic components. The electronic components include a CPU 52, a ROM 42, a RAM IC chip, etc., all of which are mounted on a single substrate to form a circuit board 30.
[0070]
The display unit 24 of the electric accessory unit 22 is composed of six symbol display surfaces 25 as shown in FIG. The symbols displayed on the symbol display surface 25 have a predetermined display order.
[0071]
A plurality of special symbol combinations are stored in advance in the RAM on the circuit board 30, and the CPU 52 compares the symbol combinations actually displayed with the stored symbol combinations and compares them. The result (match or mismatch) is determined. Here, when it is determined that the comparison results in the CPU 52 match, a so-called winning state is obtained, the special winning opening 28 is opened for a predetermined time, and a large amount of pachinko balls are supplied to the player.
[0072]
The probability that the comparison result in the CPU 52 matches and the so-called hit state, that is, the game content in the pachinko game machine 10 is controlled by the ROM 42, so the game content can be changed by illegally replacing the ROM 42. It is. Therefore, in order to eliminate the illegal use of the pachinko game machine 10, the illegal replacement (modification) of the ROM 42 must be prevented.
[0073]
The circuit board 30 to which electronic parts such as the ROM 42 for controlling the electric accessory unit 22 are attached is covered with a circuit board case 32 in order to protect the electronic parts from contact with other conductive parts, impacts, and the like. Yes. The circuit board case 32 is constituted by a main body cover 32B in which a main body base 32A and a small cover 64 are coupled. After the circuit board 30 is screwed to the opening end of the main body cover 32B, a rail portion of the main body base 32A is formed. The main body cover 32B and the main body base 32A are overlapped with the circuit board 30 in between (the mounting position) by accommodating and sliding the guide portion 35 of the main body cover 32B in 33.
[0074]
In this state, it is shipped from the manufacturing factory and attached to the back surface of the pachinko game machine 10 as shown in FIG.
[0075]
However, the circuit board 30 needs to be inspected. Therefore, when the circuit board 30 is inspected, the main body cover 32B is slid in the left direction of FIG. 3 with respect to the main body base 32A, and is thereby attached to the main body cover 32B with screws. Can be removed. The main body cover 32B is mounted so that the back surface of the circuit board 30 faces the main body base 32A. For the inspection of the back surface (pattern) of the circuit board 30, simply removing the main body base 32A from the main body cover 32B, It can be done easily.
[0076]
After the inspection of the circuit board 30, the main body cover 32B must be superimposed on the main body base 32A. For this purpose, the guide portion 35 of the main body cover 32B is accommodated in the rail portion 33 of the main body base 32A and is inserted while being slid. .
[0077]
Hereinafter, a procedure for repeatedly attaching and detaching the main body cover 32B to the main body base 32A, that is, a procedure for shifting between the covering release position and the mounting position of the circuit board 30 will be described.
[0078]
First, in the initial stage, that is, at the factory shipment stage, the guide part 35 of the main body cover 32B to which the circuit board 30 is screwed is accommodated in the rail part 33 of the main body base 32A and overlapped.
[0079]
In this state, the first cylindrical unit 100 and the second cylindrical unit 120 face each other, and the front end surfaces of the four cylindrical members 102 fit tightly with the ring-shaped protrusion 136A of the holding plate 136. Fit.
[0080]
Next, the screw 110 accommodated in the first cylindrical member 102 from the left in FIG. 7 is screwed in using the screw driver 106 (see FIG. 10). At the time of this screwing, the tip of the screw driver 106 is accommodated in the plus-type through hole 116 formed in the closing lid 118 before reaching the plus groove 108 of the screw 110. When the screw driver 106 is rotated in this state, the closing lid 118 is broken, and as a result, the screw driver 106 can reach the screw 110.
[0081]
In other words, since the screw 110 cannot be screwed in unless the closing lid 118 is damaged, it always becomes a different mark before and after screwing, and visual discrimination is possible.
[0082]
As the screw 110 is screwed, it is screwed into the circular hole 124 of the second cylindrical unit 120, and the cylindrical member 102 and the block 122 are connected. Further, during this screwing operation, the section 134 of the engagement plate 130 provided in the opening of the circular hole 124 is elastically deformed in the screwing direction. Further, when the tightening is completed, the section 134 enters the ring-shaped groove 114 provided in the screw 110. The fixing is completed as described above, and the small cover 64 is fixed at two locations with the opening window 60 closed.
[0083]
Here, even if the screw 110 is to be removed, the screw 110 cannot be returned toward the cylindrical member 102 because the section 134 is fitted in the ring-shaped groove 114. Therefore, the fixed state cannot be released unless the part once fixed is destroyed.
[0084]
When the main body cover 32B thus firmly fixed is detached from the main body base 32A, as shown in FIG. 9, the cylindrical member 102 used for fixing (that is, the first cylindrical member 102 for the first time). The main connection piece 104 and the sub-connection piece 106 connected to each other are cut off. Thereby, the fixed cylindrical member 102 is separated from the main body cover 32B, and the main body cover 32B can be removed by sliding in the direction opposite to that at the time of attachment, and can be separated from the main body base 32A.
[0085]
When the main body cover 32B is returned to the mounting position again after the inspection and accommodation, it is fixed using the second cylindrical member 102 from the left in FIG. Thereafter, when removing, the main connecting piece 104 and the sub connecting piece 106 connected to the second cylindrical member 102 are cut off.
[0086]
By repeating this, three times of opening and four times of fixing are possible.
[0087]
In the present embodiment, the main body base 32A and the main body cover 32B constituting the circuit board case 32 are detachably attached while being slid. However, the present invention is not limited to this method. The following means may be used.
[0088]
The fixing means is not limited to the fitting structure between the ring-shaped groove 114 of the screw 110 and the section 134 of the engagement plate 130. For example, the engagement cannot be released unless it is broken such as rivets or adhesion. Needless to say, such a structure is sufficient.
[0089]
Further, when the main body cover 32B is separated from the main body base 32A, the main connecting piece 104 and the sub connecting piece 106 connected to the cylindrical member 102 are cut, but the present invention is not limited to this. Instead, for example, there is no problem even if the connecting piece of the second cylindrical unit 120 is cut.
[0090]
【The invention's effect】
As described above, the invention described in claim 1 has an excellent effect that the substrate base and the body cover that are opened at the time of inspection can be tightly closed a plurality of times while preventing unauthorized modification of the substrate. Have.
[0091]
In the second aspect of the present invention, the part to be released can be arbitrarily selected as necessary, and the respective release traces can be left.
[0092]
In the invention according to the third aspect, since the fixing positions of the plurality of fixing means are arranged close to each other, the work efficiency is high.
[0093]
In the invention according to claim 4, the circuit board is fixed to the main body cover. Book in state Since the circuit board is mounted on the body base, the circuit board can be exposed only by releasing the mounting of the body cover and the body base. For example, the back surface (pattern surface) of the circuit board can be easily inspected. .
[Brief description of the drawings]
FIG. 1 is a front view of a pachinko game machine according to an embodiment of the present invention.
FIG. 2 is an enlarged view of a display unit of the electric accessory unit applied to the pachinko game machine according to the present embodiment.
FIG. 3 is a back view of the pachinko gaming machine according to the present embodiment.
FIG. 4 is a schematic view of a circuit board on which a plurality of electronic components are attached.
FIG. 5 is a perspective view showing an external appearance of a circuit board case according to the present embodiment.
6 is an exploded perspective view of the circuit board case as seen from the same direction as that shown in FIG. 5. FIG.
FIG. 7 is an external perspective view of the circuit board case according to the present embodiment as viewed from the back side.
8 is an exploded perspective view of the circuit board case viewed from the same direction as that shown in FIG.
FIG. 9 is an enlarged view of a fixing means portion for fixing the main body cover and the small cover.
FIG. 10 is a cross-sectional view showing a fixing procedure of the fixing means according to the present embodiment.
FIG. 11 is a plan view showing a part of the engagement plate according to the present embodiment.
FIG. 12 is a perspective view (cover release position) showing a state in which the main body cover and the main body base are opposed to each other.
FIG. 13 is a perspective view showing that the body cover is being slid when the body cover is attached to the body base.
[Explanation of symbols]
10 Pachinko machines
32 Circuit board case
32A body base
32B body cover
33 Rail section
35 Guide
39 Bracket
42 ROM
66 First comb-shaped notch
68 Second comb-shaped notch
70 Thin plate
72 Long groove
74 Projections
100 First cylindrical unit
102 Cylindrical member
110 screw
114 groove
120 Second cylinder unit
130 Engagement plate

Claims (4)

A circuit board case that is attached to an amusement machine and that protects a circuit board having a plurality of electronic components that control the content of the game,
A body base that supports the circuit board, has a rail portion on each of a pair of opposing sides, has a stopper portion on one of the other pair of opposing sides, and the other is opened,
The slidable guide unit for each each can accommodate a and the rail portion of the body base rail section, and wherein with an equivalent bordered by tip stopper portion, the guide portion is opened in the main body base parts and slide housed in the rail portion, and wherein in a state where the tip portion abuts on the stopper portion, covering with the body base by a predetermined space surface opposite to the support surface of the circuit board A body cover capable of taking a mounted state for protecting the circuit board, and a covering release state in which the covering of the circuit board is released,
A fixing means for fixing the main body base and the main body cover by fixing a portion of the main body base facing the stopper portion and a portion of the main body cover facing the tip portion in the mounted state; Have
A circuit board characterized in that a plurality of fixing positions by the fixing means are provided, and each time the covering of the circuit board of the main body cover is released, the fixing parts by the fixing means are excised and sequentially re-fixed at new fixing positions. Case.   The main body cover is formed with a portion in which a small window having a first cutout portion is formed, and a second cutout portion that fits the first cutout portion, and opens and closes the small window. And the first cutout portion and the second cutout portion are fitted together and the small window is closed with the small cover, and the small cover is attached to the main body base by the fixing means. The circuit board case according to claim 1, wherein the main body cover and the main body base are fixed by being fixed to a portion facing the stopper portion.   The circuit board case according to claim 1, wherein the plurality of fixed positions are arranged close to each other.   The circuit board case according to any one of claims 1 to 3, wherein the circuit board is fixed to the main body cover.

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