JP2014180515A - Board case unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a board case unit capable of surely preventing a foul play to a control board.SOLUTION: A board case unit is so formed that: in a state that a lock member 150 and a lock cover member 160 are integrally connected, an axial part 152 of the lock member 150 is inserted over a top side lock hole 136 and a bottom side lock hole 126 to engage a lock pin 155 with an engagement wall 126c; a bottom side lock part 123 and a top side lock part 133 are connected through a lock assembly 140 by engaging a lock arm 167 of the lock cover member 160 is engaged with an engaging groove 124a of the bottom side lock part 123; and the lock cover member 160 is concealed by covering at least part of an operation part 153 of the lock member 150.

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 fraud and provide a fair game, the control board is a board case composed of a bottom case formed of a transparent resin material and a top case that can be opened and closed in front of the case. Is housed inside. Further, when the top case is mounted in a closed state with respect to the bottom case, the engaging portion formed on the bottom case side and the engaging portion formed on the top case side are engaged and connected to the substrate case. Unauthorized opening prevention structure that locks the board case in the closed state and makes the board case unopenable unless the connecting part connecting the top case (or bottom case) and its engaging part is separated using a tool such as a nipper. (For example, refer to 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 that is attached to the first case member so as to be openable and closable. (For example, the top case 130 in the embodiment), and a control board (inside the case formed by being surrounded by the first case member and the second case member in a closed state in which the second case member is attached to the first case member) For example, a board case unit that accommodates the main control board 41) in the embodiment, which is provided in the first case member and opens to the side facing the second case member in the closed state (for example, implementation) The first lock portion (for example, the bottom side lock portion 123 in the embodiment) in which the bottom side lock hole 126 in the embodiment is formed, and the second case A second lock portion (for example, a top lock hole 136 in the embodiment) formed in the material and formed in a closed state and aligned with the first lock hole and penetrating in the opposite direction (for example, the top side lock hole 136 in the embodiment) The top side lock portion 133) in the embodiment, and a lock member and a cover member (for example, the lock cover member 160 in the embodiment) that are detachably connected to each other, and the first lock portion and the second lock portion are connected. A lock member assembly (for example, the lock assembly 140 in the embodiment), and the lock member is connected to the shaft portion inserted across the first lock hole and the second lock hole and to the central axis direction of the shaft portion. And an operation part that cannot be inserted into the first lock hole and the second lock hole, and a lock protrusion that protrudes and retracts outward from the shaft part (for example, in the embodiment). The cover member has an engagement portion that can be engaged with the first lock portion or the second lock portion, and an attachment / detachment portion to which the operation portion of the lock member is coupled. Thus, in the closed state, the lock member and the cover member are integrally connected, the shaft portion of the lock member is inserted across the first lock hole and the second lock hole, and the lock protrusion is the first. The first lock portion and the second lock portion are connected via the lock member assembly by engaging the lock hole and engaging the engagement portion of the cover member with the first lock portion or the second lock portion. The cover member is configured to cover and conceal at least a part of the operation portion of the lock member in the closed state.

  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 a main control board case unit. It is a schematic diagram for demonstrating the slide mounting method of a substrate case. It is a perspective view of the bottom side lock part of a bottom case. It is a perspective view of the top side lock part of a top case. It is sectional drawing which shows the state which accumulated the bottom side lock part and the top side lock part. It is a perspective view of a lock assembly. It is a perspective view of a locking member. It is sectional drawing of a locking member. It is the perspective view which looked at the lock cover member from the surface side. It is the perspective view which looked at the lock cover member from the back side. It is a perspective view which shows the state which is slidingly moving a top case with respect to a bottom case. It is a top view which shows the state which is slidingly moving a top case with respect to a bottom case. It is a perspective view which shows the state which carried out slide mounting | wearing of the top case with respect to the bottom case. It is a top view which shows the state which carried out slide mounting | wearing of the top case with respect to the bottom case. It is a perspective view which shows the state before mounting | wearing a lock member to a lock cover member. It is a perspective view which shows the state which mounted | wore the lock member with the lock member. It is a perspective view which shows the state before attaching a lock assembly to a bottom side lock part and a top side lock part. It is a perspective view which shows the state which assembled | attached the lock assembly to the bottom side lock part 123 and the top side lock part 133. FIG. It is a perspective sectional view showing a state where the lock assembly is assembled to the bottom side lock part 123 and the top side lock part 133. It is a sectional side view showing the state where the lock assembly is assembled to the bottom side lock part 123 and the top side lock part 133. It is a perspective view which shows the state before interrupting | blocking a cover separation part. It is a perspective view which shows the state after fracture | rupturing a cover isolation | separation part.

  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 are a main control board 41 (main control board case unit 100) that comprehensively controls the operation of the pachinko gaming machine PM, an image display according to game development, effect lighting, sound effects, etc. An effect control board 42 (effect control board case unit 200) for controlling the overall effects 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 300) 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 400) for supplying power to the electric / 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 present embodiment will be described with reference to FIGS. 3 and 4 additionally. Here, FIG. 3 is an exploded perspective view of the main control board case unit 100, and FIG. 4 is a schematic view for explaining a slide mounting method of the board case 110. In the following description, for convenience of explanation, the vertical and horizontal directions are defined with reference to the state of FIG. 3 as directions in the state of attachment to the pachinko gaming machine PM. The directions of the arrows shown in FIG.

  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 mounted with electronic devices 411 such as a CPU, ROM, and RAM, and electronic / electrical parts such as resistors, capacitors, and connectors using a rectangular printed wiring board as a board. Configured. 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 (both will be described in detail later) are provided at the left and right ends of the case that are aligned in the front-rear direction in the closed state. The bottom case 120 and the top case 130 are combined and integrated in a closed state in which the openings are opposed to each other. Both the bottom case 120 and the top case 130 are formed by molding means such as injection molding using a colorless and transparent resin material (for example, polycarbonate or the like), and the inside of the substrate case 110 is visible from the outside.

  The bottom case 120 has a bottom case main body 121 having a bottom wall 121a and upper, lower, left and right side walls 121b erected from the periphery of the bottom wall 121a. The bottom side sealing part 122 formed integrally with the left end part of 121 and the bottom side lock part 123 formed integrally with the right end part of the bottom case main body 121 are comprised. On the upper and lower side walls 121b of the bottom case main body 121, a plurality of bottom side slide engaging portions 121c that protrude rearward from the bottom wall 121a are formed side by side in the left-right direction.

  The top case 130 has a bottom case 131a and top and bottom left and right side walls 131b erected from the periphery of the bottom wall 131a. The top case main body 131 is formed in a rectangular box shape having an open front as a whole, and the top case. The bottom case includes a top side sealing portion 132 formed integrally with the left end portion of the main body 131 and a top side locking portion 133 integrally connected to the right end portion of the top case main body 131 via a connecting portion 133a. 120 is configured to be slidable in the left-right direction (also referred to as “slide direction”). The upper and lower side walls 131b 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 131b extends and can receive the bottom side slide engaging portion 121c of the bottom case 120. The top side groove 131c is formed, and the top side slide engaging part 131d that can be engaged with the bottom side slide engaging part 121c of the bottom case 120 is formed in the top side groove 131c. The top case 130 is formed with a connector insertion / extraction opening 131e 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 opening 131e, 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. The bottom side slide engagement portion 121c of the bottom case 120 is inserted into the portion 131c, and the top case 130 is slid rightward (hereinafter also referred to as “closing direction”), whereby the bottom side slide engagement portion 121c and the top The side slide engagement portion 131d is engaged. Thereby, the bottom case 120 and the top case 130 are integrated in a closed state in which the openings are opposed to each other. In the closed state in which the top case 130 is assembled to the bottom case 120 in this way, the bottom side sealing portion 122 and the top side sealing portion 132 that are aligned in the front-rear direction are configured to form a sealing structure. The tamper-release preventing structure is configured to have a bottom side lock portion 123 and a top side lock portion 133 that are aligned with each other.

<Sealing structure>
The sealing structure is a conventionally known configuration, and various configurations are employed as appropriate. In this embodiment, as shown in FIG. 3, the sealing structure is integrated with the left end portion of the bottom case main body 121. The bottom side sealing part 122 formed to be connected to the top side, the top side sealing part 132 formed integrally connected to the left end part of the top case body 131, and the bottom side sealing part 122 to be attached to the substrate case 110. A sealing seal 170 for sealing and a cutter member 171 for breaking the sealing seal 170 when the substrate case 110 is opened are configured.

  The seal seal 170 is formed, for example, on the surface of a paper sheet member by covering an IC chip and an antenna wire connected thereto with a transparent resin film, and various information stored in the IC chip (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 seal seal 170 is attached to the bottom side seal portion 123 in a state of being folded in a U shape.

  The cutter member 171 is mounted so as to cover the sealing seal 170 attached to the bottom side sealing portion 122. The cutter member 171 is attached to the bottom-side sealing portion 122 to surround and protect the sealing seal 170 from the outside when the substrate case 110 is closed, while the substrate case 110 is opened, that is, the top case 130 is protected. When the bottom case 120 is slid in the left direction (hereinafter also referred to as “opening direction”), the bottom case 120 is attached to the bottom side sealing part 123 by moving in the opening direction in cooperation with the top side sealing part 133. The attached seal seal 170 is constructed so as to be destroyed to the extent that it cannot be regenerated.

<Illegal opening prevention structure>
Next, the unauthorized opening prevention structure will be described with additional reference to FIGS. 5 is a perspective view of the bottom side lock portion 123, FIG. 6 is a perspective view of the top side lock portion 133, and FIG. 7 is a cross-sectional view showing a state in which the bottom side lock portion 123 and the top side lock portion 133 are overlapped. 8 is a perspective view of the lock assembly 140, FIG. 9 is a perspective view of the lock member 150, FIG. 10 is a sectional view of the lock member 150, FIG. 11 is a perspective view of the lock cover member 160 as viewed from the front side, and FIG. FIG. 4 is a perspective view of the lock cover member 160 viewed from the back side. 5 to 12, in order to facilitate the understanding of the description, only these are taken out from the main control board case unit 100 and illustrated.

  The unauthorized opening prevention structure includes a bottom side lock portion 123 provided at the right end portion of the bottom case main body 121 and a top side lock portion provided at the right end portion of the top case main body 131 via a connecting portion 133a having a semi-cylindrical cross section. 133, and a lock assembly 140 for connecting the bottom side lock part 123 and the top side lock part 133 to each other.

  As shown in FIG. 5, the bottom side lock portion 123 surrounds the bottom side accommodation portion 124 and the bottom side accommodation portion 124 in which the bottom side lock hole 126 that opens to the side facing the top side lock portion 133 is formed. A peripheral wall 128 formed in a substantially U-shaped frame shape, and a pair of connection walls 129 (see FIG. 7) that connect the lower end portions of the bottom-side accommodation portion 124 and the peripheral wall 128 are configured. The bottom side lock part 123 defines a receiving space S that is surrounded by the peripheral wall 128 and receives the top side lock part 133 and the lock assembly 140.

  The bottom side accommodating part 124 is configured by embedding a member to be accommodated 125 formed in a substantially cylindrical shape using a metal material such as an aluminum alloy by insert molding. As shown in FIG. 7, the member 125 to be accommodated includes a cylindrical body 125a having openings at both ends in the axial direction, and a disk body 125b to which one of the openings of the cylindrical body 125a is closed and fixed by caulking. . The bottom side accommodating portion 124 is formed with a bottom side lock hole 126 into which a shaft portion 152 (see FIG. 9 and the like) of a lock member 150 described later is inserted. The bottom side lock hole 126 has a step having a small hole diameter part 126a formed to have a hole diameter through which the shaft part 152 of the lock member 150 can be inserted, and a large hole diameter part 126b formed to have a larger hole diameter than the small hole diameter part 126a. It is configured as a hole, and a locking surface 126c on which a lock pin 155 (see FIG. 9 and the like) of the locking member 150 described later is locked is formed at the step portion between the small diameter hole portion 126a and the large diameter hole portion 126b. Has been. In addition, a recess 127 that extends in the front-rear direction and is integrally connected to the receiving space S is formed between the bottom housing portion 124 and the peripheral wall 128, and the recess 127 is formed on a side surface of the bottom housing portion 124. A locking groove 124a (see FIG. 7) is formed facing the surface.

  The peripheral wall 128 includes a pair of side flat plate portions 128a facing each other in the direction (vertical direction) perpendicular to the sliding direction with the bottom side accommodating portion 124 interposed therebetween, and a central flat plate portion 128b that connects the right end portions of these side flat plate portions 128a. Become. The central flat plate portion 128b is formed with a rectangular annular bulging portion 128c having a fitting hole 128d penetrating through the front and back at the center thereof, and a notch formed from the end of the flat plate portion 128b with substantially the same width as the bulging portion 128c. The rectangular groove 128e is provided. In the closed state of the substrate case 110, the top of the peripheral wall 128 and the top of the top case body 131 are substantially flush (see FIG. 15 and the like).

  As shown in FIG. 6, the top-side lock portion 133 is mainly configured by a top-side accommodation portion 134 that has a top-side lock hole 136 that penetrates in the front-rear direction and is formed in a substantially rectangular block shape. In the closed state, the top side lock hole 136 and the bottom side lock hole 126 are aligned in the front-rear direction and communicate with each other. The top side lock hole 136 is formed so as to penetrate the small diameter hole portion 126 a of the bottom side lock hole 126 with substantially the same diameter. The connecting portion 133a side of the peripheral portion of the top side lock hole 136 is connected to the top side lock hole 136 and has a groove width larger than the pin diameter of the lock pin 150, and the groove bottom surface in the insertion direction of the lock member 150. On the other hand, a pin guide groove 136a that is inclined (inclined) radially inward is formed. In addition, a convex fitting protrusion 134 a that can be fitted in the sliding direction with the fitting hole 128 d of the bottom side lock portion 123 is formed at the distal end portion of the top side accommodation portion 134.

  As shown in FIG. 8, the lock assembly 140 closes the substantially cylindrical lock member 150 inserted across the bottom side lock hole 126 and the top side lock hole 136 and the receiving space S of the bottom side lock part 123. The lock cover member 160 has a substantially rectangular lid shape, and the lock member 150 and the lock cover member 160 are detachably connected to each other.

  As shown in FIGS. 9 and 10, the lock member 150 is supported so as to be able to advance and retract in a direction perpendicular to the central axis X of the shaft portion 152 and the stepped cylindrical lock body 151 including the shaft portion 152 and the operation portion 153. And a coil spring 156 that urges the lock pin 155 outward from the shaft portion 152.

  The lock body 151 includes a cylindrical shaft portion 152 extending in the front-rear direction and an operation portion 153 formed in a disk shape larger in diameter than the shaft portion 152, and is integrally formed using a metal material such as an aluminum alloy, for example. Has been. The shaft portion 152 is provided with a pin receiving hole 154 for receiving and supporting the lock pin 155 so as to be slidably displaceable in the central axis Y direction (direction orthogonal to the central axis X). Further, the operation portion 153 is formed with an operation groove 153a that is recessed from the surface in a cylindrical shape.

  The lock pin 155 includes an elongated shaft-shaped shaft pin 155a and a short cylindrical seat portion 155b having a diameter larger than that of the shaft pin 155a at an intermediate portion of the shaft pin 155a. It is integrally formed using a metal material. On the other hand, the pin receiving hole 154 for receiving the lock pin 155 has a bottomed cylindrical seat formed in the direction of the central axis X of the lock pin 155 with a slightly larger hole diameter than the seat portion 155b of the lock pin 155. The portion receiving hole 154a and a pin support hole 154b formed coaxially through the bottom of the seat receiving hole 154a with a slightly larger diameter than the shaft pin 155a. Hereinafter, the lock pin 155 will be described with the upper end side in the disposition posture shown in FIG. 10 as the distal end side and the lower end side as the proximal end side.

  The lock pin 155 is inserted into the pin receiving hole 154 in a state of being prevented from coming off by crimping the wall surface on the inlet side of the seat receiving hole 154a to reduce the diameter. The lock pin 155 is always urged so that its tip protrudes outward from the shaft 152 by the elastic force of the coil spring 156 interposed in the pin receiving hole 154 in a compressed state in the central axis Y direction. Arranged. Instead of the coil spring 156, a biasing means such as a leaf spring or a disc spring may be used.

  As shown in FIGS. 11 and 12, the lock cover member 160 is formed in a shape illustrated using, for example, a synthetic resin material, a cover body 161 having a shape obtained by bending a rectangular flat plate into a crank shape, An attachment / detachment portion 166 formed at the bottom of the cover main body 161 and a pair of lock arms 167 disposed at a predetermined interval from the bottom of the cover main body 161 and protruding in a cantilever manner. .

  The cover body 161 includes a first cover body portion 162 formed in a horizontally long rectangular shape that matches the opening shape of the receiving space S of the bottom side lock portion 123, and is folded in an L shape from the end of the first cover body portion 162. A bent second cover main body 163. The first cover main body 162 has a protrusion 162a that protrudes in an L shape and fits into the rectangular groove 128d of the bottom side lock portion 123, and an operation groove in the lock member 150 that is formed in a circular hole. A confirmation hole 162b for exposing 153a is formed.

  Further, the cover main body 161 is formed with a cover separating portion 164 having a substantially U-shape as a whole. Here, a portion inside the cover separating portion 164 in the cover main body 161 is referred to as a “shielding portion 165” for convenience. The cover separating portion 164 is formed by intermittently arranging a plurality of fragile portions 164a that are recessed thinner than the thickness of other portions of the cover main body 161, and a plurality of fragile portions 164a using a tool such as a nipper from the outside. It is formed so as to be breakable along the arrangement of the fragile portions 164a. Therefore, when the cover separating portion 164 is broken, the shielding portion 165 is separated from the lock cover member 160 as a separate body.

  The attaching / detaching portion 166 is slightly smaller than the diameter of the pair of leg portions 166a extending from the bottom portion of the cover main body 161 and the shaft portion 152 of the locking member 150 with a facing distance slightly larger than the diameter of the operation portion 153 of the locking member 150. Each of the pair of leg portions 166a and a pair of locking portions 166b bent inward in the facing direction from each of the pair of leg portions 166a, and locked between the pair of leg portions 166a and the locking portion 166b. It is possible to engage the operation part 153 of the member 150 rotatably.

  In addition, a positioning projection 162c that can contact the outer peripheral surface of the operation portion 153 of the lock member 150 is formed on the back surface of the protrusion 162a of the cover main body 161, and the lock member 150 is engaged with the detachable portion 166. With the operation portion 153 abutted against the positioning protrusion 163c, the operation concave groove 153a of the lock member 150 and the confirmation hole 162b of the lock cover member 160 are disposed substantially coaxially, and the lock member 150 is opened through the opening of the confirmation hole 162b. The operation concave groove 152a can be accessed.

  The lock arm 167 can be elastically deformed in the plate thickness direction, and a substantially hook-shaped locking claw portion 167a that acts as a retaining member projects from a tip portion (free end side) thereof.

  In the lock assembly 140 having such a configuration, the lock member 150 can be engaged over the bottom side lock hole 126 and the top side lock hole 136, and the lock cover member 160 is engaged with the engaging groove 124 a of the bottom side lock portion 123. In the assembled state in which the lock member 150 and the lock cover member 160 are integrally connected, they are assembled in the receiving space S of the bottom lock portion 123 so that the substrate case 110 cannot be opened.

  Next, the operation of the unauthorized opening prevention structure in the main control board case unit 100 configured as described above will be described. Here, FIG. 13 is a perspective view showing a state in which the top case 130 is slid with respect to the bottom case 120, and FIG. 14 is a plan view showing a state in which the top case 130 is slid with respect to the bottom case 120. 15 is a perspective view showing a state in which the top case 130 is slid with respect to the bottom case 120, FIG. 16 is a plan view showing a state in which the top case 130 is slid with respect to the bottom case 120, and FIG. 18 is a perspective view showing a state before 150 is attached to the lock cover member 160, FIG. 18 is a perspective view showing a state where the lock member 150 is attached to the lock cover member 160, and FIG. 19 shows the lock assembly 140 with both lock portions 123 and 133. FIG. 20 is a perspective view showing a state before being assembled to the lock assembly. FIG. 3 is a perspective view showing a state in which the lock assembly 140 is assembled to both lock portions 123 and 133, and FIG. 22 is a state in which the lock assembly 140 is assembled to both lock portions 123 and 133. FIG. 23 is a perspective view showing a state before the cover separating portion 164 is cut off, and FIG. 24 is a perspective view showing a state after the cover separating portion 164 is broken. In FIGS. 13 to 24, only the main parts are taken out from the main control board case unit 100 and illustrated for easy understanding of the description.

  First, in order to assemble the substrate case 110, first, as shown in FIGS. 13 and 14, the top case 130 is overlapped with the bottom case 120 at a position slightly shifted in the left direction. Thereby, the bottom side slide engagement part 121c of the bottom case 120 is inserted in the top side groove part 131d of the top case 130 (refer FIG. 4). At this time, in the unauthorized opening prevention structure, the bottom side lock part 123 and the top side lock part 133 are arranged in a state slightly shifted in the left-right direction.

  Subsequently, as shown in FIGS. 15 and 16, the top case 130 is moved relative to the bottom case 120 in the closing direction, and the top case 130 is slid onto the bottom case 120. Thereby, the bottom side slide engagement part 121c of the bottom case 120 and the top side slide engagement part 131c of the top case 130 are engaged, and the bottom case 120 and the top case 130 are opposed to each other. The closed state is reached (see FIG. 4). At this time, in the unauthorized opening prevention structure, the fitting protrusion 134a of the top side lock portion 133 is fitted into the fitting hole 128d of the bottom side lock portion 123, and the bottom side lock portion 123 and the top side lock portion 133 are moved back and forth. The bottom-side lock hole 126 and the top-side lock hole 136 are coaxially aligned with each other so that the inner spaces are continuous with each other (see FIG. 7).

  Subsequently, as shown in FIGS. 17 and 18, the lock assembly 140 is assembled by engaging the operation portion 153 of the lock member 150 with the attachment / detachment portion 166 of the lock cover member 160. In this assembled state, the lock member 150 can be relatively displaced (relatively rotated around the central axis X) with respect to the lock cover member 160, and the lock pin 155 of the lock member 150 is moved in the left direction (the top side lock hole 136 in advance). In a direction aligned with the guide groove 136a). Further, when the lock member 150 is attached to the lock cover member 160, the operation groove 153a of the lock member 150 is exposed through the confirmation hole 162b of the lock cover member 160 and can be accessed from the outside. It is possible to rotate the lock member 150 about the central axis X by hooking a finger on the finger. In addition, since the surface of the operation part 153 of the lock member 150 and the bottom surface of the lock cover member 160 are arranged to face each other with a slight clearance, it is difficult to allow an unauthorized tool to enter from the confirmation hole 162b.

  Subsequently, as shown in FIGS. 19 and 20, the lock assembly 140 is inserted into the receiving space S of the bottom lock portion 123, and the lock assembly 140 is assembled to the bottom lock portion 123 and the top lock portion 133.

  This process will be described in detail with reference to FIGS. 21 and 22. First, with respect to the lock member 150, when the lock assembly 140 is inserted into the receiving space S, the shaft portion 152 of the lock member 150 becomes the top side lock hole. 136 is inserted. As a result, the distal end portion of the lock pin 155 that protrudes outwardly comes into sliding contact with the groove bottom surface (inclined surface) of the guide groove 136a, and the lock pin 155 receives the action of the inclined surface to resist the elastic force of the coil spring 156. Then, it is pushed into the pin accommodating hole 154. Then, the shaft portion 152 of the lock member 150 enters the bottom side lock hole 126, and the lock pin 155 reaches the terminal portion of the top side lock hole 136 (the boundary portion between the top side lock hole 136 and the bottom side lock hole 126). When reaching, the front end of the lock pin 155 is retracted to a position where it is substantially flush with the outer peripheral surface of the shaft portion 152.

  Subsequently, when the shaft portion 152 of the lock member 150 is further inserted across the top side lock hole 136 and the bottom side lock hole 126, the lock pin 155 reaches the large diameter hole portion 126b in the bottom side lock hole 126. By the way, the restraint caused by the contact with the inner wall surface of the small-diameter hole portion 126a is released, and the lock pin 155 protrudes outward of the shaft portion 152 by the elastic force of the coil spring 156 and engages with the locking wall 126c of the bottom-side lock hole 126. Will be combined.

  On the other hand, with respect to the lock cover member 160, when the lock assembly 140 is inserted into the receiving space S, the lock arm 167 of the lock cover member 160 is inserted into the recess 127 of the bottom side lock portion 123. When the lock arm 167 is inserted into the recess 127, the locking claw 167a of the lock arm 167 abuts against the wall surface of the bottom side accommodating portion 124 and is pressed away from the wall surface. The elastic claw 167a is bent by being elastically deformed in the direction, and the locking claw 167a is in sliding contact with the wall surface. When the lock arm 167 is further pushed into the recess 127 and the locking claw 167a reaches the locking groove 124a of the bottom side accommodating portion 124, the locking claw 167a returns to its original free posture due to its own restoring elasticity. It will engage with the stop groove 124a.

  Thus, the lock pin 155 of the lock member 150 engages with the locking wall 126c of the bottom side lock portion 122, and the lock arm 167 of the lock cover member 160 engages with the locking groove 124a of the bottom side lock portion 123. Thus, the bottom side lock portion 123 and the top side lock portion 133 are held in a locked state in which they are engaged and connected via the lock assembly 140. In this locked state, since the shaft portion 152 of the lock member 150 is inserted across the bottom side lock hole 126 and the top side lock hole 136, the top case 130 is slid in the opening direction with respect to the bottom case 120. The substrate case 110 is held in a strong closed state.

  In the closed state of the substrate case 110, the receiving space S of the bottom side lock portion 123 is covered with the lock cover member 160, so that the lock member 150 and the top side lock portion 133 disposed in the receiving space S are covered. It is very difficult to gain unauthorized access. Further, since the connecting portion 133a that connects the top side lock portion 133 and the top case body 131 is concealed by the shielding portion 165 of the lock cover member 160, the cover separating portion 164 is broken and shielded from the lock cover member 160. The connecting portion 133a of the top case 130 cannot be accessed unless the portion 165 is separated.

  Further, a small hole is made by a mechanical means such as a drill from the side of the bottom side lock portion 123, an unauthorized tool is inserted through the small hole and the lock pin 155 is pushed in (the lock pin 155 and the locking wall 126c). When the lock member 150 is pulled out (by releasing the engagement with the lock member 150), at the same time, the lock arm 167 of the lock cover member 160 integrally connected to the lock member 150 and the bottom side lock portion 123 are engaged. If the engagement state with the stop groove 124a is not released, the movement of the lock member 150 is restrained and held at a fixed position (locked state).

  Here, since the lock member 150 is connected to the lock cover member 160 so as to be relatively displaceable (relatively rotatable about the central axis X), the lock member 150 is inserted into the lock holes 126 and 136 and is engaged. Even in the locked state engaged with the stop wall 126c, the movement in the removal direction is restricted as described above, but the rotation operation around the central axis X is allowed while maintaining the locked state. At this time, when the lock member 150 is forcibly pulled out by an unauthorized person and the substrate case 110 is opened, there is a high possibility that the lock pin 155 of the lock member 150 is damaged. Although it should not be re-engaged with the bottom-side lock hole 126, the lock member 150 is adhesively fixed to the lock portions 123 and 133 with an adhesive or the like for the purpose of making it difficult to detect this fraud. As a result, fraudulent behavior that creates a fake locked state has become a problem. In response to such a fraudulent act, the unauthorized opening prevention structure of the present embodiment can attempt a turning operation by hooking a finger on the operation concave groove 153a of the lock member 150 through the confirmation hole 162b of the lock cover member 160. Therefore, by confirming the rotation of the lock member 150, it is easy to confirm whether the lock member 150 is properly engaged or whether the lock member 150 is improperly fixed by an adhesive or the like. Can do.

  Next, in order to open the substrate case 110 locked and held in this closed state, the cover separating portion 164 of the lock cover member 160 is removed using a tool such as a nipper as shown in FIGS. It breaks along the arrangement of the plurality of weakened portions 164a. Thereby, the shielding part 164 is separated from the lock cover member 160 to be separated from each other, and a substantially rectangular opening is defined in a portion where the shielding part 164 is removed. Then, a part of the receiving space S of the bottom lock part 123 is opened through this opening, and the connecting part 133a of the top case 130 is exposed.

  And the connection part 133a which connects between the top side lock | rock part 123 and the top case main body 130 is cut | disconnected using tools, such as a nipper, and the state connected with the bottom side lock | rock part 123 via the lock member 150 is carried out. The top side lock part 133 is separated from the top case main body 131. As a result, the connection between the bottom case 120 and the top case 130 is broken, and the substrate case 110 can be opened.

  From this state, the top case 130 is slid in the opening direction with respect to the bottom case 120 to release the engagement between the bottom side slide engaging portion 121c and the top side slide engaging portion 131d. If the bottom case 120 is separated rearward, the top case 130 is removed from the bottom case 120, and as a result, the substrate case 110 is opened.

  As described above, according to the main control board case unit 100 according to the present embodiment, in the assembled state in which the lock member 150 and the lock cover member 160 are integrally connected, the lock assembly 140 includes the bottom side lock portion 123 and the top side lock. By engaging with the portion 133, the engagement state of the lock member 150 (the engagement state of the lock pin 155 and the engagement wall 126c) and the engagement state of the lock cover member 160 (the lock arm 167 and the engagement groove 124a). Unless the engagement state is released at the same time and individually, the lock assembly 140 cannot be substantially pulled out. It is possible to make it difficult to receive remodeling acts.

  Further, in the closed state of the substrate case 110, the operation portion 153 of the lock member 150 protruding from the bottom-side lock portion 123 and the top-side lock portion 133 that are connected to each other is covered with the lock cover member 160, and a predetermined region ( Since it is concealed except for the region corresponding to the confirmation hole 162b, unauthorized access to the lock member 150 can be effectively prevented.

  In the closed state of the substrate case 110, the connecting portion 133a that connects the top side lock portion 123 and the top case body 131 is concealed by the shielding portion 165 of the lock cover member 160, and the cover separating portion 164 is broken. Since the connecting portion 133a cannot be destroyed unless the shielding portion 164 is separated from the lock cover member 160, when the substrate case 110 is opened, the trace remains clearly and the illegal action is prevented. In addition to being able to find out at an early stage, it becomes impossible to reuse the components of the substrate case 110 in a state where there is no damage mark, so that it is possible to prevent a so-called fraudulent act called “Nikoichi”.

  In order to make it difficult to recognize that the substrate case 110 has been opened after the lock pin 155 of the lock member 150 is broken and the substrate case 110 is illegally opened, the lock member 150 is locked with an adhesive or the like. Even when there is an illegal act such as creating a false locked state by bonding and fixing to the parts 123 and 133, the lock member 150 can be rotated from the outside through the confirmation hole 162b opened in the lock cover member 160. Therefore, it is easy to discover that the substrate case 110 has been illegally opened by checking whether or not the lock member 150 is properly engaged with the bottom side lock part 123 and the top side lock part 133. 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.

  Further, in the above-described embodiment, the case where the cover separating portion 164 of the lock cover member 160 is completely broken has been illustrated to facilitate understanding of the description. However, the connecting portion 133a of the top case 130 is exposed. As long as the connecting portion 133a can be cut, at least a part of the cover separating portion 164 may be broken.

  Further, in the above-described embodiment, the case where the cover separating portion 164 is formed as the fragile portion 164a that is recessed thinner than the thickness of the other portions is exemplified, but the present invention is not limited to this configuration. A plurality of slits may be arranged in a perforated shape and configured to be easily ruptured using a tool such as a nipper.

  Further, in the above-described embodiment, the lock arm 167 of the lock cover member 160 is configured to engage with the locking groove 124a of the bottom side lock portion 123, but is not limited to this configuration. The configuration may be such that the 160 lock arms 167 engage with the locking grooves formed in the top side lock portion 133.

  In the above-described embodiment, the configuration in which the lock member 150 is slidably mounted on the attachment / detachment portion 166 of the lock cover member 160 has been described as an example. However, the lock member 150 can be integrally connected to the lock cover member 160. If so, the configuration is not particularly limited.

  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 may be another substrate case unit such as a hinge open / close type.

  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 frame 10 Game board 41 Main control board (control board)
100 Main control board case unit (board case unit)
110 Substrate case 120 Bottom case (first case member)
121 Bottom case body 123 Bottom side lock part (first lock part)
126 Bottom side lock hole (first lock hole)
130 Top case (second case member)
131 Top case body 133 Top side lock part (second lock part)
133a Connecting part (connecting part)
136 Top side lock hole (second lock hole)
140 Lock assembly (locking member assembly)
150 Lock member 152 Shaft portion 153 Operation portion 153 Operation groove (operation recess)
155 Lock pin (lock protrusion)
160 Lock cover member (cover member)
164 Cover separation part 165 Shielding part (hiding part)
166 Detachable part 167 Lock arm (engagement part)

Claims (3)

A first case member and a second case member that is attached to the first case member so as to be openable and closable; A substrate case unit that houses a control substrate inside a case formed by being surrounded by a second case member,
A first lock portion provided in the first case member, and formed with a first lock hole that opens to a side facing the second case member in the closed state;
A second lock portion provided in the second case member and formed with a second lock hole that is aligned with the first lock hole in the closed state and penetrates in the facing direction;
A lock member assembly that has a lock member and a cover member that are detachably connected to each other, and that connects the first lock portion and the second lock portion;
The lock member includes a shaft portion that is inserted across the first lock hole and the second lock hole, and is connected to the first lock hole and the second lock hole in a central axis direction of the shaft portion. An operation part that cannot be inserted, and a lock protrusion that is arranged to protrude and retract outward from the shaft part,
The cover member includes an engagement portion that can be engaged with the first lock portion or the second lock portion, and an attachment / detachment portion to which the operation portion of the lock member is coupled,
In the closed state, the lock member and the cover member are integrally connected, and the shaft portion of the lock member is inserted across the first lock hole and the second lock hole to lock the lock member. The protrusion engages with the first lock hole, and the engagement portion of the cover member engages with the first lock portion or the second lock portion, so that the first lock portion and the second lock are engaged. Are connected via the lock member assembly,
The substrate case unit, wherein the cover member covers and hides at least a part of the operation portion of the lock member in the closed state. The second lock portion is provided integrally with the second case member via a connection portion that can be broken from the outside.
The said cover member has a concealment part which conceals the said connection part, and a cover isolation | separation part which is formed so that it can fracture | rupture from the outside and can isolate | separate the said concealment part from the said cover member. Board case unit. The lock member is engaged with the first lock portion and the second lock portion so as to be rotatable around the central axis of the shaft portion in a state of being connected to the cover member,
The operation portion has an operation recess for rotating the lock member,
The substrate case unit according to claim 1, wherein an operation hole for exposing the operation recess is formed in the cover member.

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