JP2015202154A - Board case unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a board case unit capable of preventing a fraudulent act to a control board more reliably.SOLUTION: A board case unit comprises a lock mechanism 140 having: a bottom side engaging part 150 formed in a bottom case; a top side engaging part 160 formed in a top case and engaged with the bottom side engaging part 150 in a case closing state; and a flat plate-shaped lock member 145 inserted into a bottom side insertion part 151 and a top side insertion part 162 which are formed in the bottom side engaging part 150 and the top side engaging part 160 respectively. The lock mechanism 140 restricts the slide movement of the top case with respect to the bottom case in an opening direction by engaging the lock member 145 inserted into the bottom side and top side insertion parts 151, 162 with wall surfaces inside the bottom side and top side insertion parts 151, 162 in a case opening/closing direction.

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. The board case is locked in a closed state, and the board case cannot be opened unless the connecting part that connects the case lid (or the case body) and its engaging part is separated using a tool such as a nipper. A prevention mechanism (lock mechanism) 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, a 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, detachably attached to the first case member). The second case member is held in the closed state by the first case member by sliding the second case member in the closing direction relative to the first case member. The control board is housed in a case formed by being surrounded by the first case member and the second case member. In addition, a first engagement portion (for example, the bottom side engagement portion 150 in the embodiment) formed on the first case member, and the first engagement formed on the second case member in the closed state. A second engagement portion (e.g., the top side engagement portion 160 in the embodiment) that engages with the first engagement portion, and a first insertion portion (e.g., each formed on the first engagement portion and the second engagement portion). A bottom-side insertion portion 151) in the embodiment and a flat-shaped locking member that is inserted into the second insertion portion (for example, the top-side insertion portion 162 in the embodiment), and is inserted into the first and second insertion portions. The second case member slides in the opening direction relative to the first case member by engaging the lock member thus formed with the wall surface in the sliding movement direction in the first and second insertion portions. Regulate It provided with a lock mechanism.

  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 the pachinko gaming machine. It is a disassembled perspective view of the said main control board case unit. It is a figure which shows the bottom side engaging part which comprises the lock mechanism in the said main control board case unit, (a) is a perspective view, (b) is a top view, (c) is the arrow cc part in (b) FIG. It is a figure which shows the top side engaging part which comprises the said locking mechanism, (a) is the perspective view seen from upper direction, (b) is a top view, (c) is the cross section of the arrow cc part in (b) FIG. It is a figure which shows the said top side engaging part, (a) is the perspective view seen from the downward direction, (b) is the perspective view seen from the downward direction in the angle different from (a). It is a figure which shows the cap member which comprises the said locking mechanism, (a) is a perspective view, (b) is a side view. It is a figure which shows the guard member which comprises the said locking mechanism, (a) is a perspective view, (b) is a top view. (A) is a perspective view which shows the state before inserting a guard member in the said bottom side engaging part, (b) is a perspective view which shows the state which inserted the guard member. (A) is a perspective view which shows the state before inserting a lock member in the said top side engaging part, (b) is a perspective view which shows the state which inserted the lock member. (A) is a perspective view which shows the state before engaging a top side engaging part with the said bottom side engaging part, (b) is a perspective view which shows the state in the middle of engaging a top side engaging part. . (A) is a perspective view which shows the state before mounting | wearing with a cap member in the state which engaged the top side engaging part with the said bottom side engaging part, (b) is a perspective view which shows the state which mounted | wore the cap member. It is. (A) is sectional drawing for demonstrating the relationship between the said locking member and the press part of a bottom side engaging part, (b) is sectional drawing which shows the state before mounting | wearing with the said cap member. It is sectional drawing for demonstrating the relationship between the said cap member, a locking member, and the press part of a bottom side engaging part, (a) is sectional drawing which shows the state in the middle of mounting | wearing with the said cap member, (b) is a cap It is sectional drawing which shows the state which mounted | wore the member. (A) The perspective view which shows the state before cut | disconnecting a part of top side engaging part in order to open the said main control board case unit, (b) is the state which cut | disconnected a part of said top side engaging part FIG.

  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 board 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 these drawings, the pachinko gaming machine The overall configuration of PM 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 at the lower portion of 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. 4 to 6, 9 to 12, and 15, in order to facilitate understanding of the explanation, only these are taken out from the main control board case unit 100 and illustrated. ing. In the following description, for convenience of explanation, the up, down, front, back, and left and right directions are defined with reference to the state of FIG. 3, and the directions of the arrows shown in FIG. Will be described.

  As shown in FIG. 3, the main control board case unit 100 includes the main control board 41 that plays a central role in the pachinko gaming machine PM, and a substantially rectangular box-like board case 110 that houses the main control board 41 therein. And a lock mechanism 140 that locks the substrate case 110 in the closed state.

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

  The board case 110 includes a bottom case 120 that is attached to and detached from the back surface of the game board 10, and a top case 130 that is detachably attached to the bottom case 120. 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 or the like), and are configured so that the inside of the substrate case 110 can be seen from the outside.

  The bottom case 120 has a rectangular plate-like base wall 120a and front, rear, left and right side walls 120b erected from the peripheral edge of the base wall 120a, and is formed in a rectangular box shape having an open upper surface as a whole. A plurality of mounting grooves 121 are formed on the outer surfaces of the front and rear side walls 120b. The mounting groove 121 includes an insertion groove 121a that opens upward and a locking groove 121b that extends rightward from the lower portion of the insertion groove 121a, and is formed in an L shape when viewed from the front-rear direction.

  The top case 130 has a rectangular plate-like base wall 130a and front / rear / left / right side walls 130b erected downward from the periphery of the base wall 131a, and is formed in a rectangular box shape whose lower surface is opened as a whole. On the inner surfaces of the front and rear side walls 130b, mounting projections 131 having the same number and the same arrangement interval as the mounting grooves 121 of the bottom case 120 are formed. The top case 130 inserts the attachment protrusion 131 into the attachment groove 121 (insertion groove 121a) of the bottom case 120 from above to cover the upper opening of the bottom case 120, and then the top case 130 is moved to the right with respect to the bottom case 120. It is configured to be attached (held) to the bottom case 120 in a closed state by sliding it in the (closing direction) and inserting the mounting protrusion 131 into the locking groove 121b of the mounting groove 121.

  The substrate case 110 is configured so that the top case 130 is attached to the bottom case 120 in a closed state as described above, and the main control substrate 41 is accommodated in a case formed by being surrounded by the bottom case 120 and the top case 130. ing. In this state where the main control board 41 is accommodated, the lock mechanism 140 that restricts the top case 130 from sliding to the left (in the opening direction) relative to the bottom case 120 and locks the board case 110 in the closed state. Is provided.

  The top case 130 is formed with a connector insertion / extraction opening (not shown) 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 connected to the board case 110. In the state accommodated in the connector, the connector of the main control board 41 is exposed to the outside through the connector insertion / extraction opening, and can be electrically connected to the effect control board 42, the payout control board 43, etc. via a harness (connector cable).

  The lock mechanism 140 is formed on the bottom side engagement portion 150 formed on the right side wall 120b of the bottom case 120 and the right side wall 130b of the top case 130, and the top case 130 is mounted on the bottom case 120. A top-side engagement portion 160 that engages with the bottom-side engagement portion 150, a rectangular flat plate-shaped lock member 145 (see FIG. 10), and a cap member 146 that is attached to the top-side engagement portion 160 (see FIG. 12). Reference) and a guard member 147 (see FIG. 9) attached to the bottom side engaging portion 150.

  As shown in FIGS. 3 and 4, the bottom side engaging portion 150 is erected from a rectangular plate-like base wall 150 a that is integrally connected to the base wall 120 a of the bottom case 120, and from the periphery of the base wall 150 a. The right side wall 120b is connected to the right side wall 120b in the front and rear and right side wall 150b. Near the center of the upper surface of the base wall 150a, a bottom-side insertion portion 151 having a substantially rectangular frame shape having front and rear side walls 151a and opening upward is formed. The rear side wall 151a is formed to be lower than the front side wall 151a. A flat plate-like pressing portion 152 is formed in the bottom side insertion portion 151 so as to stand on the upper surface of the base wall 150a and extend in the left-right direction. An inclined surface 152a that is inclined so that the thickness of the pressing portion 152 becomes thicker as it goes downward is formed on the upper end of the rear surface of the pressing portion 152.

  As shown in FIGS. 3, 5, and 6, the top-side engaging portion 160 stands downward from the rectangular plate-like base wall 160 a that is integrally connected to the base wall 130 a of the top case 130 and the peripheral edge of the base wall 160 a. The front and rear side walls 160b are connected to the right side wall 130b of the top case 130 and integrally connected thereto. In order to prevent the top case 130 from colliding with the bottom side insertion portion 151 of the bottom side engaging portion 150 when the top case 130 is slid and attached with respect to the bottom case 120, the lower side wall 160b is provided at a substantially center. A notch 160c (concave portion) having a shape corresponding to the left and right side walls 151a of the bottom insertion portion 151 that is open is formed.

  A rectangular concave cap mounting recess 161 is formed on the upper surface of the base wall 160 a of the top side engaging portion 160. On the bottom surface of the cap mounting recess 161, there are formed an insertion hole 162a penetrating vertically and a top-side insertion portion 162 composed of a flat front-and-rear insertion wall 162b extending downward in the left-right direction before and after the insertion hole 162a. Has been. The insertion hole 162a is formed so as to expand as the upper end portion moves upward.

  On the bottom lower surface of the cap mounting recess 161, a flat plate-like rear wall 163 that is erected downward at the rear position (position near the rear) of the rear insertion wall 162 b and extends in the left-right direction, and the front and rear insertion walls 162 b and the rear wall Left and right engagement walls 164 are formed to extend downward in the front-rear direction at the left and right end portions of 163. The length of the rear wall 163 downward is longer than the insertion wall 162b. The left and right engaging walls 164 are connected to the left and right ends of the front and rear insertion walls 162b and the rear wall 163. Two ribs 163 a extending vertically are formed between the rear insertion wall 162 b and the rear wall 163. Further, a flat plate-like front wall 165 is formed on the bottom lower surface of the cap mounting recess 161 so as to stand downward and extend in the left-right direction at the front position of the front insertion wall 162b (position between the front side wall 160b). Yes. The left and right end portions of the front wall 165 are bent rearward and slightly extended, and the downward length of the front wall 165 is formed to be substantially the same as the insertion wall 162b.

  On the upper surface of the base wall 160a of the top side engaging portion 160, a plurality of through holes 166 that penetrate vertically are formed side by side at positions surrounding the front, rear, left and right of the cap mounting recess 161. These through holes 166 are cut portions that are cut when the substrate case 110 locked in the closed state by the lock mechanism 140 is opened.

  As shown in FIG. 10, the lock member 145 is formed in a rectangular flat plate size that can be inserted into the top side insertion portion 162 of the top side engagement portion 160. As shown in FIG. 7, the cap member 146 is erected downward from a rectangular flat plate-shaped cap body 146a that can be inserted into the cap mounting recess 161 of the top side engaging portion 160, and a lower surface of the cap body 146a. A rectangular flat leg portion 146b of a size that can be inserted into the top side insertion portion 162 is configured.

  As shown in FIGS. 8 and 9, the guard member 147 has front and rear left and right guard walls 147 a corresponding to the front and rear side walls 151 a of the bottom side insertion portion 151, and has a substantially rectangular frame shape opened up and down. Is formed. The bottom surface of the guard member 147 is provided with front and rear bottom walls 147b formed by bending the lower ends of the front and rear guard walls 147a inward. The guard member 147 is formed using a metal material. The guard member 147 is configured to be inserted into the bottom side insertion portion 151 and cover the inner surface of the bottom side insertion portion 151.

[Operation of main control board case unit]
Next, the operation of the main control board unit 100 configured as described above will be described with reference to FIGS. 3 and 9 to 15. To assemble the main control board case unit 100, first, the main control board 41 is screwed and fixed to the inner surface side of the top case 130 and the main control board 41 is attached to the top case 130. Further, as shown in FIG. 9, the guard member 147 is inserted into the bottom side insertion portion 151 in the bottom side engagement portion 150 of the bottom case 120. Further, as shown in FIG. 10, the lock member 145 is inserted into the top side insertion portion 162 in the top side engagement portion 160 of the top case 130.

  Then, as shown in FIG. 3, the mounting protrusion 131 of the top case 130 is inserted into the mounting groove 121 (insertion groove portion 121a) of the bottom case 120 from above, and the top case 130 covers the upper opening of the bottom case 120, and then The top case 130 is slid rightward (in the closing direction) with respect to the bottom case 120, and the mounting protrusion 131 is inserted into the locking groove 121 b of the mounting groove 121. As a result, the top case 130 is held (attached) to the bottom case 120 in a closed state, and the main control board 41 is housed inside the case formed by being surrounded by the bottom case 120 and the top case 130. At this time, as shown in FIGS. 11 and 12, the bottom side engaging portion 150 and the top side engaging portion 160 are engaged, and the bottom side inserting portion 151 and the top side inserting portion 162 are aligned in the front-rear and left-right directions. Position and face up and down. Note that the lock member 145 may be inserted into the top-side insertion portion 162 after the bottom-side and top-side insertion portions 151 and 162 are opposed to each other in this manner.

  Subsequently, as shown in FIG. 12, the cap member 146 is mounted on the cap mounting recess 161 of the top side engaging portion 160, and the cap member 146 is mounted on the cap mounting recess by a predetermined welding means such as ultrasonic welding or vibration welding. 161 is welded and fixed. Instead of such welding and fixing, for example, a phenolic resin-based or epoxy-based adhesive may be used for adhesive fixing. When the cap member 146 is mounted in the cap mounting recess 146, the cap main body 146a of the cap member 146 enters the cap mounting recess 161.

  Thus, when the cap member 146 is mounted in the cap mounting recess 161, as shown in FIGS. 13 and 14, the upper surface of the lock member 145 inserted into the top side insertion portion 162 is the leg portion 146b of the cap member 146. The lock member 145 is inserted into the bottom insertion portion 151 from the top insertion portion 162. At this time, the lower surface of the lock member 145 contacts the inclined surface 152a of the pressing portion 152 in the bottom insertion portion 151, and the pressing portion 152 bends so that the upper portion of the pressing portion 152 moves forward. When the lock member 145 is completely inserted into the bottom insertion portion 151, the lock member 145 is displaced backward from the insertion direction by the top insertion portion 162 in the bottom insertion portion 151 due to the restoring force of the pressing portion 152. It is disposed at a position (a position below the rear insertion wall 162b).

  At this time, the front and rear surfaces of the lock member 145 are sandwiched between the pressing portion 152 and the inner surface of the guard wall 147a on the rear side of the guard member 147 inserted into the bottom side insertion portion 151, and the lock member 145 Movement in the front-rear direction is restricted. Therefore, even if the cap member 146 is removed from the cap mounting recess 161, it is impossible to pull out the lock member 145 from the top insertion portion 162. Further, the left and right surfaces of the lock member 145 are sandwiched and engaged between the left and right side walls 151 a of the bottom side insertion portion 151 and the left and right engagement walls 164 of the top side engagement portion 160. In particular, the left surface of the lock member 145 engages with the left side wall 151a of the bottom side insertion portion 151, and the right surface of the lock member 145 engages with the right engagement wall 164 of the top side engagement portion 160, thereby The top case 130 is restricted from sliding to the left (opening direction) with respect to the case 120. As a result, the bottom case 120 and the top case 130 are integrated in a closed state and a locked state, and the main control board case unit 100 is assembled.

  In the main control board case unit 100 assembled in this way, when the top case 130 is slid in the opening direction (leftward) with respect to the bottom case 120, the left surface of the lock member 145 is inserted into the bottom side as described above. The left side wall 151a of the portion 151 is engaged (contacted), and the right surface of the lock member 145 is regulated by engaging (contacting) the right side engaging wall 164 of the top side engaging portion 160. The top case 130 cannot be slid in the opening direction with respect to the bottom case 120. Therefore, the substrate case 110 is held in a closed state and a locked state, and unauthorized opening of the substrate case 110 is prevented.

  Next, in order to open the substrate case 110, as shown in FIG. 15, in the top side engaging portion 160, between the plurality of through holes 166 formed side by side at positions surrounding the front, rear, left and right of the cap mounting recess 161. All connecting portions (portions indicated by ellipses in FIG. 15 (a)) are cut using a tool such as a nipper, and the cap mounting recess 161, the top insertion portion 162, the rear wall 163, and the left and right engagement walls 164, the front wall 165, and the cap member 146 are separated from the base wall 160a of the top side engaging portion 160. When disconnected in this way, the lock member 145 and the engagement wall 164 on the right side of the top side engagement portion 160 are not engaged, so the top case 130 slides in the opening direction (leftward) with respect to the bottom case 120. The board case 110 can be opened.

  As described above, according to the main control board case unit 100 according to the present embodiment, the flat lock member 145 that does not have a lock structure (for example, a lock claw or the like) alone is formed on the bottom side formed on the bottom case 120. The lock member 145 is inserted into the bottom-side insertion portion 151 of the engagement portion 150 and the top-side insertion portion 162 of the top-side engagement portion 160 formed on the top case 130. By engaging with the wall surfaces (side wall 151a and engagement wall 164), the top case 130 is restricted from sliding in the opening direction with respect to the bottom case 120. Therefore, it is possible to prevent unauthorized opening of the substrate case 110 and to prevent unauthorized modification to the main control board 41. Further, since the lock member 145 has a flat plate shape, for example, it is easy to dispose an IC chip or the like storing various information on the lock member 145, thereby making it difficult to duplicate the lock member 145. At the same time, it is possible to contribute to prevention and early detection of fraud. Further, for example, the lock member 145 can be configured by an electronic substrate on which an IC chip is mounted.

  Further, in the bottom side insertion portion 151, the lock member 145 is arranged at a position shifted backward from the insertion direction (vertical direction) by the top side insertion portion 162 by the pressing portion 152. Even if the lock member 145 is removed from the recess 161, it is impossible to pull out the lock member 145 from the top side insertion portion 162. Therefore, unauthorized opening of the substrate case 110 can be reliably prevented.

  In addition, the cap member 146 has a leg portion 146b that pushes the lock member 145 inserted into the top side insertion portion 162 and inserts it into the bottom side insertion portion 151 when the cap member 146 is mounted in the cap mounting recess 161. Therefore, it is not necessary to use a tool or the like to insert the lock member 145 into the bottom side insertion portion 151, and the lock member 145 can be inserted into the bottom side insertion portion 151 as the cap member 146 is attached.

  Moreover, since it is the structure which has the metal guard members 147 which cover the inner surface of the bottom side insertion part 151, a hole is drilled from the outside in the base wall 150a of the bottom side engaging part 150 using tools, such as a drill, for example. Even if the lock member 145 is to be taken out, the guard member 147 becomes an obstacle, and it is possible to make it difficult to receive such an illegal act. In addition, by changing the thickness of the guard member 147, the size of the internal space of the bottom side insertion portion 151 can be adjusted, whereby the magnitude of resistance when inserting the lock member 145 (easy to insert) In addition, the backlash of the lock member 145 in the bottom side insertion portion 151 can be adjusted.

  Further, in order to open the substrate case 110, the cap mounting recess 161, the top side insertion portion 162, the rear wall 163, the left and right engagement walls 164, the front wall 165, and the cap member 146 are arranged as described above. This is a structure that must be separated from the 160 base wall 160a. Therefore, when the substrate case 110 is opened, the trace can be clearly imaged so that the fraud can be detected at an early stage, and the component parts of the substrate case 110 can be reused in a state where there is no destruction mark. Can not be. Accordingly, the same type of substrate case (110) is taken out from a plurality of used machines, etc., and the case components are extracted from these in an intact state, and are combined as appropriate, so that one new substrate case (110) is obtained. It is possible to prevent a fraudulent act called “Nikoichi” that duplicates and replaces this with a genuine product.

  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 configuration in which one lock mechanism 140 is provided in the substrate case 110 has been described, but a configuration in which a plurality of lock mechanisms 140 are provided may be employed.

  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.

41 Main control board 100 Main control board case unit 110 Substrate case 120 Bottom case (first case member)
130 Top case (second case member)
145 Lock member 146 Cap member 146b Leg portion 147 Guard member 150 Bottom side engagement portion (first engagement portion)
151 Bottom side insertion part (first insertion part)
152 Pressing portion 160 Top side engaging portion (second engaging portion)
162 Top side insertion part (second insertion part)

Claims (4)

A first case member and a second case member detachably attached to the first case member, wherein the second case member is slid in the closing direction with respect to the first case member; Is held in the first case member in a closed state, and a board case unit that houses a control board inside a case formed by being surrounded by the first case member and the second case member,
A first engagement portion formed on the first case member; a second engagement portion formed on the second case member and engaged with the first engagement portion in the closed state; and the first engagement. And a locking member having a flat plate shape to be inserted into the first insertion portion and the second insertion portion respectively formed in the first engagement portion and the second engagement portion, and the lock inserted into the first and second insertion portions. A lock mechanism that regulates sliding movement of the second case member in the opening direction with respect to the first case member by engaging a wall surface in the sliding movement direction in the first and second insertion portions. A board case unit comprising:   The first insertion portion includes a pressing portion that is pressed and bent by the inserted lock member, and that places the lock member at a position shifted in a direction orthogonal to the insertion direction by the restoring force thereof. The substrate case unit according to claim 1. The lock mechanism includes a cap member that covers the second insertion portion and is attached to the second engagement portion;
3. The substrate case unit according to claim 1, wherein the cap member includes a leg portion that pushes the lock member and inserts the lock member into the first and second insertion portions. 4. The substrate case unit according to claim 1, wherein the lock mechanism includes a metal guard member that is inserted into the first insertion portion and covers an inner surface of the first insertion portion.

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