JP4782748B2 - Circuit board case - Google Patents

Description

  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.

  Conventionally, a game machine such as a pachinko machine can obtain a special game value by electronic control. A central processing unit (hereinafter referred to as “CPU”), a storage element (hereinafter referred to as “ROM”), etc., which are hardware for this electronic control, are protected by a protective cover in order to protect them from contact with other conductive parts, impacts, etc. It is covered. In addition, since the game content (probability of becoming a special game value, etc.) can be changed by replacing an IC chip such as a ROM, the game machine is illegally used. In order to solve this problem, the protective cover is valuable.

  The protective cover is a case made of synthetic resin, and is composed of a main body base and a main body cover. When replacing an IC chip such as a ROM, the engaging portion of the case is opened.

  Here, in order to prevent unauthorized replacement of an IC chip such as a ROM, a sealing seal is affixed to the engaging portion of the case from the outside. The seal seal is composed of two sheets with the front seal attached to the surface of the back seal, and the adhesive strength of the adhesive of the back seal is stronger than the strength to apply the front seal to the surface of the back seal. When the cover is peeled off, only the front seal is peeled off and the back seal remains in the case and cannot be restored to the original state, so that it can be recognized that the seal seal has been peeled off.

  However, since the circuit board to which electronic components such as ROM are conventionally attached is completely covered with a case (protective cover), the sealing seal is pasted from the outside of the engaging portion of the main body base and the main body cover. Yes. For this reason, if the seal seal is peeled off and reattached in a complete form, it may not be possible to recognize that an IC chip such as a ROM has been illegally replaced.

  In addition, a circuit board case has been proposed in which a part of the main body cover is used as a lid in order to close the opening for inspecting the ROM. However, a gap is generated at the boundary between the main body cover and the lid. Therefore, there is a possibility that unauthorized modification of an IC chip such as a ROM may be easily performed.

  In consideration of the above fact, the present invention prints the same identification code on all the components in a non-erasable state and indicates the identification, even if the member is replaced by unauthorized use. It is an object to obtain a circuit board case that can be recognized quickly due to a mismatch of signs.

  Further, by processing the unevenness with a laser or ultrasonic wave to obtain an identification code that is difficult to reproduce, copying or the like can be prevented. Furthermore, the relative positional relationship between two or more members straddling is established, and the purpose is to leave a trace of unauthorized disassembly and reassembly.

The present invention is a circuit board case that is attached to the back surface of a game machine and that protects a circuit board having a plurality of electronic components by assembling a transparent main body base and a main body cover made of synthetic resin , A plurality of members constituting the circuit board case are recorded over at least two or more, and the same identification code written by the printing means by uneven processing and information when the circuit board case is opened are recorded. Provided in a position where the circuit board case has flatness, and in a position giving priority to the visibility inside the case so that an appearance inspection can be performed while the circuit board inside the case is accommodated. And a history storage area.

According to the present invention , the integrated circuit board and the plurality of members are not exchanged with other members thereafter, and the same members are used again even if they are temporarily removed by inspection or the like.

  Therefore, by printing the same identification code on all of these components in a non-erasable state and indicating the same, even if the member is replaced by unauthorized use, the identification code is inconsistent and quick. Can be recognized.

The Printout means is a thermal processing by either laser or ultrasound, is characterized by representing said identification code by irregularities due to thermal processing.

The identification code to form unevenness by thermal processing, so as to represent by this unevenness example, numbers or letters. In this case, copying or the like can be prevented by processing with a laser or an ultrasonic wave to obtain an identification code that is difficult to reproduce.

By expressing the identification code across at least two or more of the circuit board and the plurality of members, the relative positional relationship between the two or more members straddling is established, leaving a trace of unauthorized disassembly and reassembly. It becomes possible.
The history recording area is a seal that is provided with a margin capable of recording an unsealed person, an opening date, and a seal multiple times, and is affixed to the circuit board case .

In the present invention , the same identification code is printed on all the constituent members in a non-erasable state and written, so that even if the members are replaced by unauthorized use, the identification codes are inconsistent and quick. Can be recognized.

  Further, by processing the unevenness with a laser or ultrasonic wave to obtain an identification code that is difficult to reproduce, copying or the like can be prevented. Furthermore, the relative positional relationship between two or more members straddling is established, and it becomes possible to leave a trace of unauthorized disassembly and reassembly.

(First embodiment)
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.

  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.

  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.

  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.

  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.

  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.

  The display unit 24 of the electric accessory unit 22 includes a 2 × 3 matrix, that is, six symbol display surfaces 25.

  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.

  Moreover, the schematic of the back surface of the pachinko game machine 10 which concerns on 1st Embodiment is shown by FIG.

  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.

  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.

  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.

  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.

  5 to 8 show a circuit board case 32 according to the first embodiment.

  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.

  The main body cover 32B is provided with an opening window 60 so as to straddle the side surface and the ceiling surface. The main body base 32 </ b> A and the main body cover 32 </ b> B constituting the circuit board case 32 are fixed to each other after the circuit board 30 is accommodated. This makes it impossible to remove the main body base 32A and the main body cover 32B again. In addition, as a fixing means of the main body base 32A and the main body cover 32B, a strong fixing means such as ultrasonic welding is preferable.

  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.

  A small window 33 is provided on a part of the side surface of the main body cover 32B. The small window 33 corresponds to a key switch unit (not shown) provided on the circuit board 30 when the circuit board 30 is closed by the main body base 32A. Accordingly, even in the closed state, the key operation of the key switch unit can be performed from the small window with a dedicated jig. This key operation is for setting the functions of the pachinko machine.

  Note that a gap is not generated at the periphery of the small window 33 due to the correspondence with the key switch unit, and the closed state is maintained. Further, when the function setting is unnecessary, the small window 33 is not necessary.

  A small cover 64 is detachably attached to the opening window 60, and the opening window 60 is closed.

  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 attached (or integrally molded) to 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.

  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. 68, the thick portion 66B 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.

  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.

  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.

  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.

  A protrusion 76 is formed on the periphery 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 60 is slid. Elimination of continuous openings in direction.

  As shown in FIGS. 7 to 9, the first cylindrical unit 100 constituting a part of the fixing means is integrated with an end portion (hereinafter referred to as a lower end portion) of the small cover 64 facing the main body base 32 </ b> A. Molded.

  The first cylindrical unit 100 is composed of eight cylindrical members 102, and is arranged along the side of the lower end portion of the small cover 64. These cylindrical members 102 are respectively connected to the lower end portion of the small cover 64 by the main connecting piece 104. Further, the cylindrical members 102 are connected to each other by a sub-connecting piece 106 except between the fourth and fifth positions counted from one end.

  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. Note that 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 eight cylindrical members 102 are closed simultaneously.

  On the other hand, in a state where the small cover 64 is tightly fitted to the opening window portion 60 of the main body cover 32B, the first cylinder is disposed at a position coaxial with the cylindrical members 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 the body unit 100 is integrally formed.

  In the first embodiment, the periphery of the second cylindrical unit 120 is covered with one large rectangular parallelepiped block 122, and eight circles are formed on one surface of the block 122 along the longitudinal direction. A hole 124 is formed. 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.

  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.

  A female screw 126 (see FIG. 10) is formed on the inner peripheral surface of the circular hole 124. The opening of the circular hole 124 is located on the bottom surface of the long hole 128 (see FIG. 8) that accommodates the eight circular holes 124.

  On the bottom surface of the long hole 128, a metal thin engagement plate 130 as a one-direction limiting member is placed. In the engagement plate 130, circular holes 132 having the same pitch as the pitch of the eight circular holes 124 are formed.

  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.

  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).

  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.

  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.

  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.

  At the time of closing the opening window 60 by the small cover 64, two of the eight cylindrical members 102 are fixed. Here, the small cover 64 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.

  In the first embodiment, since eight fixing means are used and two of them are used, three times of opening and final fixing can be repeated.

  Here, the ROM 42 on the circuit board 30 accommodated in the circuit board case 32 attached to the pachinko game machine 10 needs to be periodically inspected. In this case, it is necessary to remove the small cover 64 attached to the main body cover 32B. In such a case, as described above, the opening portion 60 can be opened by cutting the fixed portion, and the ROM or the like can be inspected.

6 and 12, a rectangular small window 138 is provided on the bottom surface of the main body base 32A. From this small window 138, a part of the circuit board 30 to be supported is exposed. On a part of the exposed circuit board 30, a part model number that also serves as a position matching with the main body base 32A is recorded as a mark such as a machine-readable bar code. A mark 140 for identifying the circuit board 30 is provided on the periphery of the small window 138 so as to be continuous with the mark. Thereby, it is possible to easily determine whether or not the circuit board 30 has been replaced by visual observation or light detection.
The operation of the first embodiment will be described below.

  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.

  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.

  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.

  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.

  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 accommodated, the peripheral edges of the main body base 32A and the main body cover 32B are subjected to ultrasonic welding. It is stuck.

  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.

  However, the ROM 42 mounted on the circuit board 30 needs to be regularly inspected. Accordingly, when inspecting the ROM 42, the small cover 64 coupled to the main body cover 32B is removed, and the ROM 42 is taken out from the opening window 60 of the circuit board case formed thereby, and the inspection is performed.

  After the inspection of the ROM 42, the opening window 60 must be closed. For this purpose, the small cover 64 is fitted and fixed to the opening window 60 again.

  Hereinafter, a procedure for repeatedly attaching and detaching the small cover 64 to the opening window 60 will be described.

  First, in the initial stage, that is, at the factory shipment stage, the long groove 72 of the small cover 64 is accommodated in accordance with one end of the protrusion 74 of the opening window 60. By sliding while maintaining this accommodated state, the first comb-shaped notch 66 is engaged with the second comb-shaped notch 68, and the small cover 64 is fitted into the opening window 60.

  In this state, the first cylindrical unit 66 and the second cylindrical unit 68 face each other, and the front end surfaces of the eight cylindrical members 102 are tightly fitted to the ring-shaped protrusion 136A of the holding plate 136. Fit together.

  Next, screws 110 housed in the first and fifth cylindrical members 102 from the left in FIG. 7 are screwed in using a 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.

  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.

  As the screw 110 is screwed in, it is screwed into the female screw 126 formed in 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.

  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.

  When the small cover 64 firmly fixed in this way is removed from the opening window portion 60, as shown in FIG. 9, the cylindrical member 102 used for fixing (that is, the first and fifth if the first time) The main connecting piece 104 and the sub connecting piece 106 connected to the cylindrical member 102) are cut off. Thereby, the fixed cylindrical member 102 is separated from the small cover 64, and the small cover 64 can be removed by sliding in the direction opposite to that at the time of attachment, and the opening window 60 can be opened.

  When the opening window portion 60 is closed again by the small cover 64 after the inspection and accommodation, the second and sixth cylindrical members 102 from the left in FIG. Thereafter, when removing, the main connecting piece 104 and the sub connecting piece 106 connected to the second and sixth cylindrical members 102 are cut off.

  By repeating this, three times of opening and four times of fixing are possible.

  In the first embodiment, it has been described that ultrasonic welding is preferable as a means for fixing the periphery of the main body base 32A and the main body cover 32B constituting the circuit board case 32, but the method is limited to this method. Instead, other fixing means may be used.

  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.

  Further, when the small cover 64 is taken out from the opening window 60, 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.

In addition to the above fixing, in the first embodiment, the following means for preventing fraud are provided.
(1) Gap prevention As shown in FIG. 13, since the projecting portion 74 and the long groove 72 of the slide portion are staggered in the plan view of the main body cover 32B, the vertical direction in the plan view of the main body cover 32B also in this portion. No continuous opening occurs.

In addition, as shown in FIG. 14, when the opening window 60 is closed by the small cover 64, it may be fixed with a slight gap. However, even if there is an unfitted portion between the first and second comb-shaped notches 66 and 68, since the thin plate 70 is provided, an opening continuous in the vertical direction in the plan view of the main body cover 32B is formed. It does not occur.
(2) Restriction of ventilation hole In the first embodiment, since the circular hole 62 as the ventilation hole of the main body cover 32B is only on the side surface and the diameter dimension thereof is 2 mm or less, a thick wire or tweezers is not allowed to enter. , Fraud can be prevented in advance. In addition, since a thin wire of 2 mm or less is bent with a small resistance, it cannot be used at all even if it can be inserted. Further, since the circular hole 62 is provided only on the side surface, even if a wire or the like is inserted from the circular hole 62, it does not reach the electronic circuit component linearly, so that fraud can be prevented.
(3) Closure of the connector portion The portion corresponding to the connector portion 44 of the first embodiment (the portion along one end in the longitudinal direction of the main body cover 32B) is initially closed by the thin molded portion 46. Here, the opening 46A is provided by post-processing when the position of the connector portion 44 is determined by the model. As a result, unnecessary portions (portions where the connector portion 44 is attached but not attached) are kept closed by the thin molded portion 46.

In the first embodiment, the circuit board case 32 is described as a transparent case made of synthetic resin. However, the present invention is not limited to this, and an opaque member may be used. However, when an opaque member is used, it is impossible to visually inspect the electronic components on the circuit board 30 while the circuit board 30 is housed in the circuit board case 32 and to perform an appearance inspection. I cannot deny.
(Second Embodiment)
A second embodiment of the present invention will be described below. Note that the same components as those in the first embodiment are denoted by the same reference numerals, and description of the configuration is omitted.

  In the first embodiment, as shown in FIGS. 6 and 12, a small window 138 is provided in the main body base 32A to expose a part of the circuit board 30, and alignment between the main body base 32A and the circuit board 30 Although a mark also serving as a collation is added, in the second embodiment, as this mark, a number 200 is recorded by a light beam emitted from a laser as shown in FIG. That is, using the heat of the light beam, the main body base 32 </ b> A and the portion of the circuit board 30 irradiated with the light beam are recessed to form the numeral 200. In this figure, 4 to 5 digit numbers are recorded in the order of manufacture. In FIG. 15, 0001 is recorded. .., 0003... Are sequentially recorded for subsequent products.

  In the second embodiment, as shown in FIG. 16, the same numeral 202 is recorded by the laser so as to straddle the main body base 32A and the main body cover 32B. As a result, marks (numerals) for alignment and verification are recorded on the circuit board 30, the main body base 32A, and the main body cover 32B. Although the numbers 204 are recorded independently on the small cover 64, the numbers may be recorded across the small cover 64 and the main body cover 32B.

  In this laser recording, the position, straight line part, and curved part data can be recorded and reproduced later for collation. Can be used to prevent unauthorized use. In the case of recording by laser, if a finer image or the like is recorded, it is possible to obtain an effect higher than that of a seal seal.

  Note that other thermal processing means such as ultrasonic waves may be used as long as marks are applied by thermal processing, not limited to laser.

  In the second embodiment, the laser mark is recorded across the two members. However, when only the verification is a function, the laser mark may be recorded for each member.

  As shown in FIG. 17, a rectangular seal 206 on which the same number as the laser mark is recorded is attached to the outside of the ceiling surface of the main body cover 32B. The sticking position of the seal 206 is stuck in accordance with a substantially L-shaped guide protrusion 208 that protrudes outside the ceiling surface of the main body cover 32b. Thereby, the seal | sticker 206 can be affixed on a substantially fixed position.

  For example, the guide protrusion 208 can function as a means for determining a reading start position when information described on the seal 206 needs to be read by a sensor or the like. That is, when a reflective light amount sensor is used to scan and read the sticker 206 sticking portion, the reflection density of the guide projection 208 is higher than other portions, and a so-called pulse waveform can be obtained. The information on the sticker 206 can be taken as an image using the output as a trigger (start position signal).

  The number recorded on the sticker 206 is recorded in the upper part of the sticker 206, and the lower part is a history recording area 210. Below the history recording area 210, characters “opened” and “opened date” are recorded, and blank items below the characters are shown. In the blank, there are margins for three lines, each indicated by a circled number character (1, 2, 3).

  Such a seal 206 is recorded and stamped by the person who opens the small cover 64 every time the small cover 64 is opened.

  Here, conventionally, the area for leaving the history has been provided in a sealing seal for sealing the main body base and the main body cover. In this case, since the seal seal is affixed so as to straddle the main body base and the main body cover, the affixing position is limited and the affixed surface is affixed. That is, it was a situation in which visibility cannot be emphasized. However, in the circuit board case 32 of the present invention, since the main body base 32A and the main body cover 32B are completely fixed, there is no need to seal over both of them, and only the history needs to be considered. It becomes possible to affix the seal 206 on a flat surface that is easy to record and easy to record.

  The seal 206 is not limited to the outside of the ceiling surface, but may be a side surface of the main body cover 32B.

  As shown in FIG. 17, an inscription 212 indicating the date of manufacture is provided on the inside of the ceiling surface of the main body cover 32B. Since the engraving 212 is engraved on the inside of the ceiling surface of the main body cover 32B (see FIG. 18), the flatness of the outer surface is maintained and the main body cover 32B is transparent, so that it can be recognized from the outside. Yes.

  This engraving 212 is expressed by unevenness by providing an engraving member on the molding die in advance.

  Here, the method of expressing the date of manufacture of the stamp 212 is such that a predetermined circle is formed for each year, month, and day, and a scale is engraved at a predetermined pitch on this circumference.

  A circular mark 214 indicating the year of manufacture is engraved with four divisions, and '97, '98, '99, and '00 are engraved in the vicinity of each scale. For example, '97 is 1997. Means year.

  Next, a twelve-division scale is engraved on the circular inscription 216 indicating the month of manufacture, and numbers 1 to 12 are engraved in the vicinity of each scale. For example, 8 means August.

  Finally, a 31-division scale is engraved on the circular inscription 218 indicating the date of manufacture, and numbers 5, 10, 15, 20, 25, and 30 are engraved in the vicinity of the scale every 5 divisions. For example, a position that has shifted from a 15 scale to a 3 scale 20 scale means 18 days.

  Such circular markings 214, 216, and 218 have a function as an information expression unit and are stamped on all the body covers 32B. The memory is not limited to the circular marks 214, 216, and 218, and may be a straight line.

  On the other hand, an arrow 220 in the diametrical direction is imprinted inside each circular marking 214, 216, 218. The arrow 220 can uniquely indicate each scale, and can freely rotate 360 ° on the molding die. For this reason, it is possible to express the date of manufacture by a combination of numbers indicated by the arrows by generating the arrows corresponding to the numbers corresponding to the dates of manufacture. This arrow 220 has a function as an index part. When the memory is a straight line, the arrow 220 may be moved along the straight line.

  In the above description, the date of manufacture has been described as an example of the stamp. However, the stamp 222 (see FIG. 17) of the manufacturer or the like may be provided together with the stamp of the date of manufacture to prevent unauthorized replacement. Good.

  FIG. 16 shows a modification of the date of manufacture. Although the above date of manufacture can be marked with a detailed date, the direction of the arrow must be changed every day. On the other hand, the stamp shown in FIG. 16 is provided with three (year, month, day) circular stamps 224, 226, and 228 as information representation parts, and the inside thereof is divided into four parts. In this four-divided region, a point 230 is engraved according to a predetermined rule.

  An outline of the date of manufacture can be obtained from the number of points 230 and the region to be engraved. For example, a point 230 is engraved in the upper right area of the circular stamp 224 for year expression (left side of FIG. 16), and a point 230 is formed in the lower right area of the circular stamp 226 for month expression (center of FIG. 16). If the point 230 is engraved in the lower left area of the circular mark 228 for expressing the day (right side of FIG. 16), between 17th and 24th April to June 1997 Indicates that it was manufactured. That is, the approximate date of manufacture can be recognized.

Such simple marking is effective when the area for marking is narrow, and is applied to the date of manufacture of the small cover 64, for example. Further, it is preferable that the marks 224, 226, 228 and the point 230 are also engraved inside the small cover 64.
(Third embodiment)
A third embodiment of the present invention will be described below. Note that the same components as those in the first embodiment are denoted by the same reference numerals, and description of the configuration is omitted.

  In the first embodiment, as shown in FIG. 3, the circuit board case 32 (the main body cover 32 </ b> B is initially formed at a portion corresponding to the connector portion 44 in a closed state and is formed as a thin molded portion 46.

  On the other hand, in the third embodiment, as shown in FIG. 17, the connector 44 is common to all models 44A (for example, a connector for power supply), and for each model. The non-common connector portion 44B exists or does not exist.

  The common connector portion 44A is literally common, but in the first embodiment, the thin molded portion 46 must be opened by post-processing. Therefore, in the third embodiment, the region of the main body cover 32B corresponding to the common connector portion 44A is opened in advance at the molding stage (opening portion 232). This eliminates the need for post-processing, and improves post-processing because only the portion corresponding to the non-common connector portion 44B is post-processed.

  In addition, as in the first embodiment, the closing property of the circuit board 30 can be maintained, and the printed wiring 234 and the like can be protected.

  In the above description, the region corresponding to the non-common connector portion 44B is the thin molded portion 46. However, a continuous rectangular belt-shaped region including the non-common connector portion 44B may be the thin molded portion.

  Further, in the above, the thin molded portion 46 is provided so that a necessary portion can be easily opened at the time of assembly. However, if the position to be opened can be recognized at the stage of forming the main body cover 32B, the necessary portion at that time is provided. May be opened. For example, a member for providing an opening in a molding die can be attached and detached, and this member is attached at a necessary position for each molding, or an opening 232 is provided by cutting after molding, and this opening 232 is provided. By making the blades detachable, the openings 232 can be provided only in necessary positions in advance.

It is a front view of the pachinko game machine concerning a 1st embodiment. It is an enlarged view of the display part of the electrically-driven accessory unit applied to the pachinko game machine which concerns on 1st Embodiment. It is a back view of the pachinko game machine concerning a 1st embodiment. It is the schematic of the circuit board with which the some electronic component was attached. It is a perspective view which shows the external appearance of the circuit board case which concerns on 1st Embodiment. It is a disassembled perspective view of the circuit board case seen from the same direction as the direction shown in FIG. It is the appearance perspective view which looked at the circuit board case concerning a 1st embodiment from the back side. It is a disassembled perspective view of the circuit board case seen from the same direction as the direction shown in FIG. It is an enlarged view of the fixing means part which fixes a main body cover and a small cover. It is sectional drawing which shows the fixing procedure of the fixing means which concerns on 1st Embodiment. It is a top view which shows a part of engagement plate which concerns on 1st Embodiment. It is a top view of the small window concerning a 1st embodiment. It is the XIII-XIII sectional view taken on the line of FIG. It is the XIV-XIV sectional view taken on the line of FIG. It is a bottom view of the circuit board case which concerns on 2nd Embodiment. It is a small cover arrangement side side view of a circuit board case concerning a 2nd embodiment. It is a top view of the circuit board case which concerns on 2nd and 3rd Embodiment. It is the XVIII-XVIII sectional view taken on the line of FIG.

Explanation of symbols

10 Pachinko machines 32 Circuit board case 32A Main unit base 32B Main unit cover 42 ROM
60 Opening window portion 64 Small cover 66 First comb-shaped notch portion 68 Second comb-shaped notch portion 70 Thin plate 72 Long groove 74 Projection portion 100 First cylindrical unit 102 Cylindrical member (first cylindrical body)
110 Screw (engagement member)
114 Groove 120 Second cylinder unit 130 Engagement plate (one-direction limiting member)
134 Section 200, 202, 204 Number (mark)
206 Seal 208 Guide protrusion 212 Stamp

Claims (3)

A circuit board case that is attached to the back surface of an amusement machine and that protects a circuit board having a plurality of electronic components by assembling a synthetic resin transparent main body base and main body cover ,
Among the plurality of members constituting the circuit board case , across the at least two or more, the same identification code represented by the printing means by uneven processing, and
Provided to record information when the circuit board case is opened, provided at a flat position in the circuit board case, and capable of visual inspection while containing the circuit board inside the case. A history storage area provided at a position giving priority to the visibility inside the case ;
A circuit board case characterized by comprising:   The circuit board case according to claim 1, wherein the printing unit is thermal processing using either laser or ultrasonic waves, and the identification code is expressed by unevenness generated by the thermal processing.   3. The history recording area is a seal that is provided with a margin capable of recording an unsealed person, an opening date, and a seal a plurality of times, and is affixed to the circuit board case. Circuit board case as described.

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