JP6136281B2 - PCB case unit - Google Patents

Description

  The present invention relates to a board case unit that houses a control board used for controlling a gaming machine.

  A gaming machine such as a pachinko gaming machine is provided with a control board that controls the operation of an electronic component mounted on the gaming machine. For example, a control board called a main control board or a main control board is equipped with a ROM in which game machine control software is written, and has a role as a central control device for overall control of the game machine operation. doing. For this reason, the control board of the gaming machine is likely to be a target of action such as replacement with a counterfeit ROM or addition of an illegal circuit.

  In order to prevent such dishonest act and provide a fair game, the control board is a board case comprising a case body formed of a transparent resin material and a case lid that can be opened and closed in front of the case body. Is housed inside. Further, when the case lid is attached to the case body in a closed state, the engagement portion formed on the case body side and the engagement portion formed on the case lid side are engaged and connected to the board case. In this way, the substrate case is locked in a closed state, and the connecting case that connects between the case lid (or case body) and its engaging portion is not opened with a tool such as a nipper. A prevention structure is provided (see, for example, Patent Document 1).

JP 2004-65280 A

  However, fraudulent acts on control boards are becoming more sophisticated, and there is a need for measures to prevent such fraudulent acts more reliably.

  The present invention has been made in view of such a problem, and an object of the present invention is to provide a board case unit that can more reliably prevent an illegal act on a control board.

In order to achieve such an object, the substrate case unit according to the present invention includes a first case member (for example, the bottom case 120 in the embodiment) and a second case member (for example, in the embodiment) that are mounted to be openable and closable. A board case unit that includes a top case (130) and accommodates a control board (for example, the main control board 41 in the embodiment) in a closed case formed by combining a first case member and a second case member. A first lock portion provided on the first case member (for example, the bottom-side lock portion 123 in the embodiment), and a second lock provided on the second case member and in proximity to the first lock portion in the closed state. Part (for example, the top side lock part 133 in the embodiment), and the first lock part is recessed in a bottomed shape in the facing direction. The lock hole is formed, and the second lock portion is formed with a lock protrusion that protrudes in the opposite direction and is inserted into the lock hole in the closed state, and the lock hole is filled with the lock protrusion inserted into the lock hole. By curing the curable fluid, the first lock portion and the second lock portion are fixed via the curable fluid, and the first case member and the second case member are connected in a closed state. And the first case member and the second case member are relatively moved in a predetermined sliding direction so that the first case member and the second case member are assembled in a closed state. A restriction groove that extends in a direction orthogonal to the sliding direction and communicates with the lock hole is formed in at least one of the two lock portions .

  According to the present invention, it is possible to more reliably prevent fraudulent acts on the control board.

It is a perspective view of the pachinko game machine provided with the main control board case unit concerning this embodiment. It is a rear view of a pachinko gaming machine. It is a disassembled perspective view of the main control board case unit which concerns on 1st Embodiment. It is a perspective view of a bottom case and a top case in the main control board case unit according to the first embodiment. It is a perspective view which shows the unauthorized opening prevention structure with which the main control board case unit which concerns on 1st Embodiment was equipped. It is a top view of the unauthorized opening prevention structure concerning a 1st embodiment. It is sectional drawing shown along arrow VII-VII in FIG. It is sectional drawing shown along arrow VII-VII in FIG. (A) is a perspective view of a bottom side lock part, (b) is a top view of a bottom side lock part. It is sectional drawing shown along arrow XX in FIG. It is sectional drawing shown along arrow XI-XI in FIG. (A) is a perspective view of a top side lock part, (b) is a top view of a top side lock part. It is sectional drawing shown along the arrow XIII-XIII in FIG. In 1st Embodiment, it is sectional drawing which shows the state which shifted the case side lock part in the left-right direction and opposed with respect to the bottom side lock part. In 1st Embodiment, it is sectional drawing which shows the state which shifted and overlapped the case side lock part in the left-right direction with respect to the bottom side lock part. In 1st Embodiment, it is sectional drawing which shows the state which carried out the slide mounting | wearing of the top side lock part with respect to the bottom side lock part. In 1st Embodiment, it is sectional drawing which shows the state with which the curable fluid was filled between the bottom side lock part and the top side lock part. It is a disassembled perspective view of the main control board case unit which concerns on 2nd Embodiment. It is the perspective view which looked at the bottom case in 2nd Embodiment from the front. It is the perspective view which looked at the top case in 2nd Embodiment from back. It is a perspective view which shows the state which made the bottom case and top case in 2nd Embodiment oppose. It is a schematic diagram for demonstrating the effect | action of the unauthorized opening prevention structure which concerns on 2nd Embodiment.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. As a representative example of a gaming machine provided with a substrate case unit according to the present invention, a perspective view and a rear view of a pachinko gaming machine PM are shown in FIGS. 1 and 2, and first, referring to this figure, the pachinko gaming machine PM The overall configuration will be described.

[Overall configuration of pachinko machines]
First, the basic structure of the front side of the pachinko gaming machine PM will be described with reference to FIG. As shown in FIG. 1, the pachinko gaming machine PM is configured with a rectangular frame size adapted to the front of the opening of the outer frame 1 which forms a vertically fixed holding frame configured in an outer rectangular frame size, and can be opened and closed. The front frame 2 that forms a frame is attached to the front left side edge portion of the front left and right hinge mechanism 3 so that it can be opened and closed sideways and detachable, and is called a double lock provided on the front right side edge portion. The device 4 is always held in a closed state engaged and connected to the outer frame 1.

  On the front frame 2, a rectangular glass frame 5 fitted to the upper front area of the front frame 2 is assembled so as to be opened and closed laterally and detachable using the upper and lower hinge mechanisms 3, and using the locking device 4 It is always kept in a closed state covering the front surface of the front frame 2. In the front frame 2, the game board 10 is detachably set and held, and the game area PA in front of the game board 10 is faced through the multi-layer glass 5a of the glass frame 5 that is always held closed. ing.

  Upper and lower ball trays (upper ball tray 6a and lower ball tray 6b) for storing game balls are provided below the glass frame 5, and a launch handle 7 for performing a game ball launch operation on the front right side of the lower ball tray 6b. Is provided. On the front side of the glass frame 5, there are provided an electrical decoration device 8 such as a light emitting diode (LED) or a lamp, and a speaker 9 for generating a sound effect according to the developed state of the game.

  Although the detailed illustration is omitted in FIG. 1, the game board 10 is a board with a decorative board that is molded by attaching a cell on which a predetermined pattern is printed to a rectangular laminated plywood that has been subjected to router processing or the like. A substantially circular game area PA is formed surrounded by upper and lower rail decorations. The game area PA is provided with game components such as a large number of game nails, windmills, central decorations, an effect display device that displays a predetermined image according to the progress of the game, and various winning holes. At the lower end of the game board, an out port is formed through the game board 10 in the front-rear direction for discharging the game ball that has fallen to the back side without falling into the winning port.

  Next, the basic structure of the back side of the pachinko gaming machine PM will be described with reference to FIG. On the back side of the front frame 2, there is a back set board 30, which has a window that communicates with the front and rear in the center and is based on a base frame that is formed in a rectangular frame shape somewhat smaller than the front frame 2. Via the hinge mechanism 3, it is connected to the back of the front frame 2 so that it can be opened, closed, and detached. A back set cover 30C having a rectangular box shape with an open front is detachably attached to the back set board 30 and is always disposed to cover the back side of the game board 10 attached to the front frame 2. (Thus, the main control board case unit 100 and the effect control board case unit 200 described later are covered by the back set cover 30C).

  Each part of the back set board 30 includes a ball storage tank 31 for storing a large number of game balls, a tank rail 32 extending from the ball storage tank 31 with a gentle downward slope to the right, and a right end portion of the tank rail 32. A ball supply passage member 33 extending downward from the connection, a prize ball payout unit 34 for paying out a game ball guided by the ball supply passage member 33, and a game ball paid out from the prize ball payout unit 34 for guiding the game ball to the upper ball tray 6. A prize ball passage member 35 and the like are provided.

  On the back side of the game board 10, there is a main control board 41 (main control board case unit 100, 200) that comprehensively controls the operation of the pachinko gaming machine PM, image display according to game development, effect lighting, sound effects An effect control board 42 (effect control board case unit 300) for controlling the overall effects such as the above is attached. On the other hand, on the back side of the back set board 30, a payout control board 43 (payout control board case unit 400) that performs control related to the launch and payout of game balls, various control boards that receive power from the game facility side, A power supply board 44 (power supply board case unit 500) for supplying electric power to the electrical / electronic components is attached. These control boards and electrical / electronic components of each part of the pachinko gaming machine PM are connected by a harness (connector cable) so that the pachinko gaming machine PM can be operated.

The pachinko gaming machine PM is used for a game in which the outer frame 1 is fixedly installed on the gaming island (installation frame base) of the gaming facility, the front frame 2, the glass frame 5 and the like are closed and locked, and is placed on the upper ball tray 6a. The game is started by storing the game ball and rotating the launch handle 7. When the firing handle 7 is turned, the game balls stored in the upper ball tray 6a are sent to the launching mechanism one by one by the ball feeding mechanism disposed on the back side of the glass frame 5, and the launching mechanism 7 After being launched into the game area PA, a pachinko game is developed thereafter.

[Configuration of main control board case unit]
Next, the configuration of the main control board case unit 100 according to the first embodiment will be described with additional reference to FIGS. 3 and 4. 3 is an exploded perspective view of the main control board case unit 100, and FIG. 4 is a perspective view of a bottom case and a top case in the main control board case unit 100. In the following description, for convenience of explanation, the vertical and horizontal directions are defined with reference to the state of FIG. 3, and the directions of the arrows shown in FIG. Will be described.

  The main control board case unit 100 is configured mainly by the main control board 41 that plays a central role in the pachinko gaming machine PM and the substantially rectangular container-like board case 110 that accommodates the main control board 41 therein. ing.

  Although not shown in detail, the main control board 41 is configured by mounting various semiconductor devices and electronic / electrical components such as resistors, capacitors, connectors, etc. using a rectangular printed wiring board as a board. This main control board 41 is screwed and fixed to the inner surface side of the board case 110 (a top case 130 described later).

  The board case 110 includes a bottom case 120 that is detachably attached to the back surface of the game board 10 and a top case 130 that is detachably attached to the bottom case 120. The top case 130 is attached to the bottom case 120. A sealing structure and an unauthorized opening prevention structure, which will be described in detail later, are provided at the right and left ends of the case that are aligned in front and rear in the closed state. Substrate accommodation spaces 120S and 130S for accommodating the main control board 41 are formed in the bottom case 120 and the top case 130, respectively, and are coupled in a closed state in which the substrate accommodation spaces 120S and 130S face each other. And integrated. Both the bottom case 120 and the top case 130 are formed by a molding means such as injection molding using a transparent resin material (for example, polycarbonate), and the inside of the substrate case 110 is visible from the outside.

  The bottom case 120 includes a bottom case main body 121 formed in a rectangular box shape having an opening on the front surface side, a bottom side sealing portion 122 formed integrally with a left end portion of the bottom case main body 121, and a bottom case main body 121. And a bottom-side lock portion 123 formed integrally with the right end portion. On the upper and lower side walls 121a of the bottom case main body 121, a plurality of bottom side slide engaging portions 121c protruding rearward from the bottom portion 121b are formed side by side in the left-right direction.

The top case 130 includes a top case main body 131 formed in a rectangular box shape having an opening on the front side, a top side sealing portion 132 formed integrally with a left end portion of the top case main body 131, and a top case main body 131. A top-side lock portion 133 that is integrally connected to the right end portion of the bottom case 120 via a connecting portion 131R, and is configured to be slidable in the left-right direction with respect to the bottom case 120. The upper and lower side walls 131a of the top case main body 131 have a concave groove shape that opens to the front side along the longitudinal direction (left and right direction) in which the side wall 131a extends and can receive the bottom side slide engaging portion 121c of the bottom case 120. The top-side groove 131b is formed, and the top-side slide engaging portion 131c that can be engaged with the bottom-side slide engaging portion 121c of the bottom case 120 is formed in the top-side groove 131b. The top case 130 is formed with a connector insertion / extraction opening 131d penetrating front and back corresponding to the mounting position of the connector (not shown) of the main control board 41, and the main control board 41 is attached to the top case 130. The connector of the main control board 41 is exposed to the outside through the connector insertion / extraction port 131d, and can be electrically connected to the effect control board 42, the payout control board 43, etc. via a harness (connector cable).

  To assemble the top case 130 to the bottom case 120, as shown in FIG. 4, the top case 130 is opposed to the bottom case 120 in the front-rear direction with the top case 130 slightly shifted to the left. By inserting the bottom side slide engagement portion 121c of the bottom case 120 into the portion 131d and sliding the top case 130 in the right direction (hereinafter also referred to as “closing direction”), the bottom side slide engagement portion 121c and the top The side slide engaging part 131c is engaged. Accordingly, the bottom case 120 and the top case 130 are attached in a closed state in which the substrate housing spaces 120S and 130S face each other. In the closed state in which the bottom case 120 and the top case 130 are thus combined, the bottom side sealing portion 122 and the top side sealing portion 132 that are aligned in the front-rear direction constitute a sealing structure, and the bottom that is aligned in the front-rear direction. The side lock part 123 and the top side lock part 133 constitute an unauthorized opening prevention structure.

  The sealing structure includes a bottom side sealing portion 122 formed integrally connected to the left end portion of the bottom case main body 121, a top side sealing portion 132 formed integrally connected to the left end portion of the top case main body 131, It is comprised from the sealing seal | sticker 140 stuck on the bottom side sealing part 122, and the cutter member 141 which destroys the sealing seal | sticker 140. FIG.

  The seal seal 140 is formed, for example, on the surface of a paper sheet member by covering the IC tag and the antenna wire connected thereto with a transparent resin film, and various information stored in the IC tag (for example, pachinko) Information relating to the gaming machine PM, identification information of the main control board 41, and the like) can be read by the reader device from the outside of the board case 110 via the antenna line.

  The cutter member 141 is mounted so as to cover the sealing seal 140 attached to the bottom side sealing portion 122. The cutter member 141 is attached to the bottom-side sealing portion 122 and surrounds and protects the sealing seal 140 from the outside. On the other hand, when the substrate case 110 is opened, that is, the top case 130 is leftward with respect to the bottom case 120. When the sliding movement is performed (hereinafter also referred to as “opening direction”), the sealing seal 140 is configured so as to be unreproducible by moving in the opening direction in cooperation with the top-side sealing portion 132. Yes.

  Next, the unauthorized opening prevention structure will be described with additional reference to FIGS. 5 is a perspective view showing the structure for preventing unauthorized opening, FIG. 6 is a plan view of the structure for preventing unauthorized opening, FIG. 7 is a cross-sectional view taken along arrows VII-VII in FIG. 6, and FIG. FIG. 9A is a perspective view of the bottom side lock portion, FIG. 9B is a plan view of the bottom side lock portion, and FIG. 10 is along the arrow XX in FIG. FIG. 11 is a cross-sectional view taken along arrow XI-XI in FIG. 9, FIG. 12 (a) is a perspective view of the top side lock portion, and FIG. 12 (b) is a plan view of the top side lock portion. 13 is a cross-sectional view taken along arrows XIII-XIII in FIG. As described above, the bottom side lock portion 123 and the top side lock portion 133 are integrally connected to the bottom case 120 and the top case 130, but in FIGS. 5 to 13, the bottom side lock portion 122 is formed. And only these are taken out and shown in a state where the top side lock part 133 is cut off.

The unauthorized opening prevention structure (so-called caulking structure) includes a bottom-side lock portion 123 formed integrally connected to the right end portion of the bottom case main body 121, and a thin semi-cylindrical connecting portion 131R at the right end portion of the top case main body 131. (See FIG. 3) and a top side lock portion 133 formed integrally connected via the bottom side lock portion 123 and the top side lock portion 133. The bottom side lock portion 123 and the top side lock portion 133 are configured to be bonded and fixed by being filled and cured. In the present embodiment, two sets of unauthorized opening prevention structures are provided.

  First, as the curable fluid, for example, a two-component mixed adhesive is suitably applied. A two-component mixed adhesive is an adhesive that develops an adhesive force by mixing two liquid agents consisting of a main agent and a curing agent. For example, an epoxy-based, acrylic-based, or ethylene-based synthetic resin is the main component. An adhesive is exemplified. According to such an adhesive, since it cures at room temperature, there is little shrinkage after curing, and a small gap is filled, so that strong adhesion is possible. The curable fluid is not limited to a two-component mixed adhesive, and an ultraviolet curable resin, a thermosetting resin, or the like may be applied.

  The bottom side lock portion 123 is formed to have a fixed housing 124 formed in a rectangular parallelepiped shape and a lock hole 125 recessed in the fixed housing 124. The fixed container 124 has a bottom-side facing surface 124 a that abuts against the top-side lock portion 133 when the substrate case 110 is closed. The lock hole 125 includes a pair of fixed hole portions 126 that extend in the sliding direction (left-right direction) of the substrate case 110 and an integral engagement hole portion 128 that extends across the pair of fixed hole portions 126. When viewed from the facing surface 124a side, the entire hole has a substantially well shape. Each fixing hole 126 is divided into a first hole 126a, a second hole 126b, and a third hole 126c by a pair of engagement holes 128. The lower half portion of each fixed hole portion 126 is formed in a semicircular cross section around an axis X extending in the sliding direction of the substrate case 110. The second hole 126b located in the center of each fixed hole 126 is formed with a bottom-side regulating groove 127 having a U-shaped cross section that is recessed along the inner peripheral surface of the second fixed hole 126b. Yes. Each engagement hole 128 is recessed in a substantially bowl shape from the bottom-side facing surface 124a of the fixed container 124, and is formed in a size that allows insertion of a locking projection 137 of a top-side lock portion 133, which will be described in detail later. Has been.

  The top-side lock portion 133 includes a fixed plate 134 that is formed in a flat plate shape with a size capable of closing the lock hole 125 of the bottom-side lock portion 123 and a pair of lock protrusions that protrude in a direction perpendicular to the fixed plate 134. 137. The top side lock portion 133 is connected to the top case main body 131 via a connection portion 131R having a semi-cylindrical cross section. By breaking the connection portion 131R, the top case main body 131 and the top side lock portion 133 are separated. Is possible.

  The fixing plate 134 has a top-side facing surface 134 a that abuts and faces the bottom-side facing surface 124 a of the bottom-side lock portion 123 in the closed state of the substrate case 110. At substantially four corners of the fixing plate 134, circular injection holes 135 penetrating the front and back are respectively opened, and the opening positions of the injection holes 135 are the first and third hole portions of the bottom side lock portion 123 described above. 126a, 126c (that is, in a closed state of the substrate case 110, the four inlets 135 and the pair of first holes 126a and the pair of third holes 126c overlap each other in the front-rear direction and communicate with each other). ) A pair of concave top-side regulating grooves 136 are formed on the opposing surface side of the fixed plate 134 at positions sandwiched between the pair of lock protrusions 137. The lock protrusion 137 has a cross-sectional shape (substantially saddle shape) corresponding to the engagement hole portion 128 of the bottom side lock portion 123 and is thicker (slide) than the length of the engagement hole portion 128 (length in the sliding direction). (Thickness in the direction) is formed small. Therefore, the lock protrusion 137 can be inserted into the engagement hole portion 128 and can be slid along the axial direction of the engagement hole portion 128. The arrangement interval of the pair of lock protrusions 137 is set to be the same as the arrangement interval of the pair of engagement hole portions 128 in the bottom side lock portion 123.

The lock protrusion 137 has a communication hole 138 that extends in the sliding direction of the substrate case 110 and penetrates the front and back. The communication hole 138 is formed in a circular hole shape with an axis Y extending in the sliding direction as a center, and is engaged with the axis X of the communication hole 138 in a state where the lock protrusion 137 is inserted into the engagement hole 128. The axial center Y of the hole portion 128 is aligned and coincident with each other. In other words, in this state, the communication hole 138 of the lock protrusion 137 and the lock hole 125 communicate coaxially, whereby the supply from the injection port 135 is provided between the bottom side lock part 123 and the top side lock part 133. A flow path for flowing the curable fluid is defined. The bottom side lock portion 123 and the top side lock portion 133 are bonded and fixed by filling the entire lock hole 125 with the curable fluid and curing by the flow path.

  Next, the operation of the unauthorized opening prevention structure in the main control board unit 100 configured as described above will be described with additional reference to FIGS. 14 is a cross-sectional view showing a state in which the case side lock portion 133 is opposed to the bottom side lock portion 123 while being shifted in the left-right direction, and FIG. 15 is a case side lock portion 133 with respect to the bottom side lock portion 123. FIG. 16 is a cross-sectional view showing a state in which the top side lock part 133 is slid with respect to the bottom side lock part 123, and FIG. It is sectional drawing which shows the state filled with the sclerosing | hardenable fluid between the top side lock parts 133. FIG. Note that, as described above, also in FIGS. 14 to 17, only the bottom side lock part 123 and the top side lock part 133 are taken out from the bottom case 120 and the top case 130.

  To assemble the main control board case unit 100, first, as shown in FIG. 4, the top case 130 is opposed to the front and rear at a position slightly shifted in the left-right direction with respect to the bottom case 120. At this time, in the unauthorized opening prevention structure, as shown in FIG. 14, the top-side lock portion 123 and the bottom-side lock portion 133 are opposed to each other in the state of being slightly shifted in the left-right direction, and the lock protrusion 137 of the top case 130. Can be inserted into the engagement hole 128 of the bottom case 120.

  Subsequently, the top case 130 is overlaid on the bottom case 120. At this time, in the unauthorized opening prevention structure, as shown in FIG. 15, the top side lock portion 133 and the bottom side lock portion 123 overlap with each other with a slight shift in the left-right direction, and the opposing surfaces 124a, 134a are in contact with each other. In addition, the lock protrusion 137 of the top lock portion 133 is inserted into the engagement hole 128 of the bottom lock portion 123.

  Subsequently, the top case 130 is slid in the closing direction to close the bottom case 120 and the top case 130. At this time, in the unauthorized opening prevention structure, as shown in FIG. 16, the top side lock portion 133 moves relative to the bottom side lock portion 123 in the closing direction, and the top side lock portion 133 and the bottom side lock portion 123 Are aligned in the front-rear direction. Thus, in a state where the lock hole 125 of the bottom side lock portion 123 is closed by the fixing plate 134 of the top side lock portion 133, each injection hole 135 of the top case 130 and the lock hole 125 of the bottom case 120 communicate with each other, and the bottom side lock A flow path for allowing the curable fluid to flow is defined between the portion 123 and the top side lock portion 133.

Subsequently, as shown in FIG. 17, the curable fluid F is poured from the injection hole 135 of the top case 130. At this time, the curable fluid F flows in the order of the injection hole 135 → the first hole 126a or the third hole 126c → the engagement hole 128 → the communication hole 138 → the second hole 126b →. Accordingly, the entire space excluding the portion occupied by the lock protrusion 137 of the top side lock portion 133 in the internal space of the lock hole 125 in the bottom side lock portion 123 is filled with the curable resin F. As a result, the lock protrusion 137 of the top side lock portion 133 is held in a state of being immersed in the curable fluid F in the engagement hole portion 128 of the bottom side lock portion 123. Further, when the curable fluid F flows through the lock hole 125, the curable fluid F penetrates and fills the bottom side regulating groove 127 and the top side regulating groove 136. As described above, since the communication hole 137 of the top side lock part 133 and the lock hole 125 of the bottom side lock part 123 are concentrically connected, the curable fluid F supplied from the injection port 135 flows. It can flow quickly in the passage (the lock hole 125 and the communication hole 138) and can be filled with the curable fluid F in a short time. When the curable fluid F filled in the entire lock hole 125 is cured at room temperature, the bottom side lock portion 123 and the top side lock portion 133 are bonded and fixed via the curable fluid F.

  Thus, when the bottom side lock part 123 and the bottom side lock part 133 are bonded and fixed in the closed state of the substrate case 110, the top case 130 cannot be slid in the opening direction with respect to the bottom case 120 ( The substrate case 110 cannot be opened). The entire space excluding the portion occupied by the lock projection 137 of the top side lock portion 133 in the internal space of the engagement hole portion 128 in the bottom side lock portion 123 (a space for sliding the lock projection 137 in the opening direction). In addition, since the curable fluid is filled, the curable fluid (cured layer) F becomes a wall, and it is more difficult to relatively move the top side lock portion 133 in the opening direction. Further, the curable fluid penetrates into the bottom side regulation groove 127 and the top side regulation groove 136 and solidifies integrally with the adhesive layer in the lock hole 125, so that the top side lock part 133 in the relative direction in the opening direction. Movement is restricted. Accordingly, since the substrate case 110 is held in a tightly closed state and unauthorized opening is prevented, it is possible to make it difficult to receive unauthorized actions such as replacement or modification of electronic components with respect to the main control board 41.

  In order to properly open the substrate case 110 for maintenance inspection or inspection of the main control board 41, the connecting portion 131R connecting the top case main body 131 and the top side lock portion 133 is broken (cut). Thus, the top side lock part 133 in a state of being bonded and fixed to the bottom side lock part 123 may be separated from the top case main body 131. Here, two bottom side lock portions 123 and two top side lock portions 133 are provided at the right end portions of the bottom case 120 and the bottom case 130 respectively (that is, two sets). In order to connect the two in a closed state, any one set of the bottom side lock part 123 and the top side lock part 133 may be used.

  As described above, according to the main control board case unit 100 according to the first embodiment, the bottom side lock portion 123 and the top side in a state where the lock protrusion 137 of the top side lock portion 133 is inserted into the lock hole 125 of the bottom side lock portion 123. The lock part 133 is bonded via the curable fluid F, and the bottom case 120 and the top case 130 are connected and fixed in a closed state, so that the bottom side lock part 123 and the top side lock part 133 are connected. Unless the curable fluid (cured layer) F filled in between is removed, the top case 130 cannot be slid in the opening direction with respect to the bottom case 120, so that unauthorized opening of the substrate case 110 is ensured. Therefore, it is possible to prevent unauthorized modification to the main control board 41. In addition, when the curable fluid (cured layer) F is removed, the removed trace remains clearly, so that unauthorized opening of the substrate case 110 can be detected at an early stage. Therefore, according to this embodiment, there is an effect that it is possible to contribute to prevention and early detection of fraud.

  In addition, by forming the communication hole 138 that penetrates the lock protrusion 137 in the top side lock portion 133, the curable fluid is connected to the communication hole when the lock hole 125 is filled with the curable fluid with the lock protrusion 137 inserted. Since the fluid flows in the lock hole 125 through 138, the flow of the curable fluid is not hindered by the lock protrusion 137, and the curable fluid can be spread all over the lock hole 125 to be cured. . Therefore, it is possible to improve the adhesive strength between the bottom side lock part 123 and the top side lock part 133.

Further, in a state where the lock protrusion 137 of the top side lock part 133 is inserted into the lock hole 125 of the bottom side lock part 123, the communication hole 138 and the lock hole 125 of the lock protrusion 137 are located under the axes X and Y. By being arranged concentrically, the curable fluid poured from the injection port 135 quickly flows in the lock hole 125, so that the filling time of the curable fluid can be shortened.

  In addition, the substrate case 110 is configured to be a slide mounting type, and at least one of the bottom side lock portion 123 and the top side lock portion 133 extends in a direction perpendicular to the slide direction of the substrate case 110 and communicates with the lock hole 125. By forming the grooves 127 and 136, the adhesive poured into the lock hole 125 penetrates into the restriction grooves 127 and 136 and solidifies integrally, so that the top side lock part 133 is opened with respect to the bottom side lock part 123. The sliding movement in the direction is more strictly regulated, and unauthorized opening of the substrate case 110 can be more effectively prevented.

  Next, the configuration of the main control board case unit 200 according to the second embodiment will be described with additional reference to FIGS. 18 is an exploded perspective view of the main control board case unit 200, FIG. 19 is a perspective view of the bottom case 220 viewed from the front, and FIG. 20 is a perspective view of the top case 230 viewed from the rear. In the following description, for convenience of description, the vertical and horizontal directions are defined with reference to the state of FIG. 18, and the directions of the arrows shown in FIG. Will be described.

  The main control board case unit 200 is mainly composed of the above-described main control board 41 that plays a central role in the pachinko gaming machine PM and a substantially rectangular container-like board case 210 that accommodates the main control board 41 inside. In the closed case 210, the main control board 41, the sealing structure, and the unauthorized opening prevention structure are arranged as a sealed case unit. Since the main control board 41 has already been described above, the description thereof is omitted here.

  The board case 210 includes a bottom case 220 that is attached to and detached from the back surface of the game board 10 and a top case 230 that is detachably attached to the bottom case 220. The top case 230 is attached to the bottom case 220. Inside the case defined in the closed state, a sealing structure and an unauthorized opening prevention structure, which will be described in detail later, are provided. Substrate accommodation spaces 220S and 230S for accommodating the main control board 41 are formed in the bottom case 220 and the top case 230, respectively, and are coupled in a closed state in which the substrate accommodation spaces 220S and 230S face each other. And integrated. Both the bottom case 220 and the top case 230 are formed by a molding means such as injection molding using a transparent resin material (for example, polycarbonate or the like), and the inside of the substrate case 210 is visible from the outside.

  The bottom case 220 has a base wall 221a and upper, lower, left and right side walls 221b surrounding the base wall 221a and extending forward. The bottom case 220 is mainly composed of a bottom case main body 221 formed as a rectangular box with an open front. . The bottom side wall 221b of the bottom case body 221 is provided with a bottom-side sealing portion 222 that protrudes toward the substrate housing space 220S, and the upper and lower side walls 221b are provided with bottom-side lock portions 223 that project toward the substrate housing space 220S. ing.

The top case 230 has a base wall 231a and upper, lower, left and right side walls 231b surrounding the base wall 231a and extending rearward. The top case 230 is mainly composed of a top case main body 231 formed as a rectangular box with the rear surface open. The bottom case 220 is configured to be slidable in the left-right direction. The left side wall 231b of the top case body 231 is provided with a top side sealing portion 232 protruding toward the substrate housing space 230S, and the upper and lower side walls 231b.
Is provided with a top-side lock portion 233 that opens toward the substrate housing space 230S. The top case 230 is formed with a connector insertion / extraction opening 231d penetrating front and back corresponding to the mounting position of the connector (not shown) of the main control board 41, and the main control board 41 is attached to the top case 230. The connector of the main control board 41 is exposed to the outside through the connector insertion / extraction opening 231d, and can be electrically connected to the effect control board 42, the payout control board 43, etc. via a harness (connector cable).

  The sealing structure is attached to the bottom side sealing portion 222 formed integrally with the bottom case body 221, the top side sealing portion 232 formed integrally with the top case body 231, and the bottom side sealing portion 222. The seal seal 240 and the cutter member 241 that breaks the seal seal 240 are configured. The main body-side sealing portion 123 and the lid-side sealing portion 133 are arranged to face each other in the front-rear direction in a state where the case lid 130 is closed to the case main body 120. In this opposing state, the main-body-side sealing portion 122 and the lid-side sealing portion 133 A seal seal 150 and a seal seal cutter 160 are accommodated between the seal portion 132.

  The seal seal 240 is formed on the surface of a paper sheet member, for example, by covering an IC tag and an antenna wire connected thereto with a transparent resin film, and various information stored in the IC tag (for example, pachinko) Information relating to the gaming machine PM, identification information of the main control board 41, and the like) can be read by the reader device from the outside of the board case 210 via the antenna line.

  The cutter member 241 is mounted so as to cover the sealing seal 240 attached to the bottom side sealing portion 222. The cutter member 241 is attached to the bottom-side sealing portion 222 and surrounds and protects the sealing seal 240 from the outside. On the other hand, when the substrate case 210 is opened, that is, the top case 230 is leftward with respect to the bottom case 220. When the sliding movement is performed (hereinafter also referred to as “opening direction”), the sealing seal 240 is configured to be broken in an unreproducible manner by moving in the opening direction in cooperation with the top-side sealing portion 232. Yes.

  The unauthorized opening prevention structure (so-called caulking structure) is integrally formed on the bottom side lock portion 223 formed integrally connected to the upper and lower side walls 221b of the bottom case main body 221 and the upper and lower side walls 231b of the top case main body 231. The bottom side lock unit 233 is filled with a curable fluid such as an adhesive between the bottom side lock unit 223 and the top side lock unit 233 and cured. 223 and the top lock portion 233 are configured to be bonded and fixed.

  First, as the curable fluid, for example, a two-component mixed adhesive is suitably applied. A two-component mixed adhesive is an adhesive that develops an adhesive force by mixing two liquid agents consisting of a main agent and a curing agent. For example, an epoxy-based, acrylic-based, or ethylene-based synthetic resin is the main component. An adhesive is exemplified. According to such an adhesive, since it cures at room temperature, there is little shrinkage after curing, and a small gap is filled, so that strong adhesion is possible. The curable fluid is not limited to a two-component mixed adhesive, and an ultraviolet curable resin, a thermosetting resin, or the like may be applied.

  The bottom-side lock portion 223 includes a plurality of bottom-side slide engagement portions 224 that protrude forward from the upper and lower side walls 221b of the bottom case main body 221. The bottom-side slide engagement portions 224 are formed in a flat plate shape bent in an approximately L shape, and are arranged at equal intervals in the left-right direction along the upper and lower side walls 221b.

The top-side lock portion 233 is a concave groove-shaped top-side groove that opens to the rear side along the longitudinal direction (left-right direction) in which the side wall 231b of the top case main body 231 extends so as to receive the bottom-side slide engagement portion. And a plurality of top-side slide engagement portions 235 formed to be engageable with the bottom-side slide engagement portion 224 in the top-side groove portion 234. The same number of top side slide engagement parts 235 as the bottom side slide engagement parts 224 are formed, and the arrangement interval thereof also corresponds to the bottom side slide engagement parts. In addition, an inlet 236 that passes through the base wall 231 a on the front and back sides and communicates with the top-side groove 234 is opened on the front side of the top case 230.

  Next, the operation of the unauthorized opening prevention structure in the main control board case unit 100 configured as described above will be described with reference to FIGS. 21 and 22 additionally. Here, FIG. 21 is a perspective view showing a state in which the bottom case and the top case are opposed to each other, and FIG. 22 is a schematic diagram for explaining the operation of the unauthorized opening prevention structure.

  To assemble the main control board case unit 100, first, as shown in FIG. 21, the top case 230 is opposed to the front and rear at a position slightly shifted in the left-right direction with respect to the bottom case. At this time, in the unauthorized opening prevention structure, as shown in FIG. 22 (a), the bottom-side slide engagement portion 224 and the top-side slide engagement portion 235 are at positions slightly shifted left and right, and the bottom-side slide engagement The joint portion 224 can be inserted into the top side groove portion 234.

  Subsequently, the top case 230 is overlaid on the bottom case 220. At this time, in the unauthorized opening prevention structure, as shown in FIG. 22 (b), the bottom-side slide engagement portion 224 is inserted into the top-side slide groove portion 234.

  Subsequently, the top case 230 is slid in the closing direction to close the top case 230 and the bottom case 220. At this time, in the structure for preventing unauthorized opening, as shown in FIG. 22C, the top side slide engaging portion 224 moves relative to the bottom side slide engaging portion 235 in the closing direction, and the bottom side slide engaging portion is moved. The joining portion 224 and the top side slide engagement portion 235 are engaged.

  Subsequently, as shown in FIG. 22 (d), the curable fluid F is poured from the inlet 236 of the top case 230. As a result, the curable fluid F is filled in the entire space of the internal space of the top groove portion 234 except for the portion occupied by the engaged slide engaging portions 224 and 235. Therefore, the bottom side slide engagement part 224 and the top side slide engagement part 235 will be hold | maintained in the state immersed in the curable fluid F with the engagement state. In this engaged state, the opening of the top groove 234 is closed by the side wall 221b of the bottom case 220, so that the curable fluid F is not likely to leak outside through the gap. And if the curable fluid F with which the top side groove part 234 was filled hardens | cures at normal temperature, the bottom side slide engaging part 224 and the top side slide engaging part 235 will be bonded and fixed via the curable fluid F.

  Thus, when the bottom side lock portion 223 and the top side lock portion 233 are bonded and fixed, the top case 230 cannot be slid in the opening direction with respect to the bottom case 220 (the substrate case 210 cannot be opened). Also, the entire space excluding the portion occupied by the bottom side slide engagement portion 224 and the top side slide engagement portion 235 in the internal space of the top side groove portion 234 (to slide the top side slide engagement portion 224 in the opening direction). ) Is filled with a curable fluid, and the curable fluid (cured layer) F becomes a wall, and it is more difficult to slide the top case 230 in the opening direction with respect to the bottom case 220. Become. Accordingly, since the substrate case 210 is held in a tightly closed state and unauthorized opening is prevented, it is possible to make it difficult to receive unauthorized actions such as replacement or modification of the electronic components with respect to the main control board 41.

  As described above, according to the main control board case unit 200 according to the second embodiment, the curable fluid F is placed in the top side groove portion 234 in a state where the bottom side slide engagement portion 224 and the top side slide engagement portion 235 are engaged. The bottom case 220 and the top case 230 are connected and fixed in a closed state, so that the hardening filled between the bottom side lock part 223 and the top side lock 233 part is obtained. Since the top case 230 cannot be slid in the opening direction with respect to the bottom case 220 unless the functional fluid (cured layer) F is removed, the main control is performed by reliably preventing the substrate case 210 from being illegally opened. It is possible to make it difficult for the substrate 41 to be illegally modified. In particular, since the bottom side lock portion 223 and the top side lock portion 233 are bonded and fixed in a sealed and concealed form inside the substrate case 210, the bottom side lock portion 223 and the top side lock portion are externally attached to the substrate case 210. It becomes very difficult to access 233, and it becomes possible to more strictly prevent illegal remodeling. In addition, when the curable fluid (cured layer) F is removed, the removed trace remains clearly, so that unauthorized opening of the substrate case 210 can be detected at an early stage. Therefore, according to this embodiment, there is an effect that it is possible to contribute to prevention and early detection of fraud.

  Further, the plurality of bottom-side slide engagement portions 224 and the plurality of top-side slide engagement portions 235, which are respectively disposed on the side wall 221b of the bottom case 220 and the side wall 231b of the top case 230, are slidably engaged with each other. Since the configuration is such that the bottom case 220 and the top case 230 are coupled with each other in a stronger engagement state because the configuration is such that the bottom case 220 and the top case 230 are bonded together through the curable fluid F in a state, it is more difficult to open the substrate case 210. Is possible.

  In addition, this invention is not limited to the said embodiment, If it is a range which does not deviate from the summary of this invention, it can improve suitably.

  In the above-described embodiment, the slide open / close type substrate case unit has been described as an example. However, the present invention is not limited to this configuration, and other substrate case units such as a hinge open / close type may be used.

  In the above-described embodiment, the substrate case unit having both the unauthorized opening prevention structure and the sealing structure is applied. However, the present invention is not limited to this configuration, and the substrate case unit has only the unauthorized opening prevention structure. There may be.

  In the above-described embodiment, the case where the board case unit according to the present invention is applied to the main control board case unit of the pachinko game machine is described as an example, but the present invention is not limited to this, and the production control board It may be applied to other board case units such as a case unit and a payout control board case unit, and further, the same effect can be obtained when applied to a gaming machine other than a pachinko gaming machine, for example, a board case unit of a slot machine. It is possible to obtain.

PM Pachinko machine 1 Outer frame 2 Front frame 5 Glass door 10 Game board 41 Main control board 100 Main control board case unit (first embodiment)
110 Substrate case 120 Bottom case (first case member)
121 Bottom case body 123 Bottom side lock part (first lock part)
125 Lock hole 130 Top case (second case member)
131 Top case body 133 Top side lock part (second lock part)
137 Lock projection 138 Communication hole 200 Main control board case unit (second embodiment)
210 Substrate case 220 Bottom case (second case member)
223 Bottom side lock part (second lock part)
224 Bottom side slide engagement part (locking protrusion)
230 Top case (first case member)
233 Top side lock part (first lock part)
234 Top side groove (first lock hole)
235 Top side slide engagement part F curable fluid

Claims (1)

A substrate case that includes a first case member and a second case member that are mounted so as to be openable and closable with each other, and that accommodates a control substrate in a case formed in a closed state in which the first case member and the second case member are combined. A unit,
A first lock provided on the first case member;
A second lock portion provided on the second case member and in proximity to the first lock portion in the closed state;
The first lock portion is formed with a lock hole recessed in a bottomed shape in the facing direction,
The second lock portion is formed with a lock protrusion that protrudes in the facing direction and is inserted into the lock hole in the closed state.
The first lock portion and the second lock portion are fixed through the curable fluid by curing the curable fluid filled in the lock hole in a state where the lock protrusion is inserted into the lock hole. And configured to connect the first case member and the second case member in the closed state ,
The first case member and the second case member are moved relative to each other in a predetermined sliding direction, and the first case member and the second case member are assembled in the closed state,
A substrate case unit , wherein a restriction groove extending in a direction orthogonal to the sliding direction and communicating with the lock hole is formed in at least one of the first lock portion and the second lock portion .

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