JP2013192598A - Grounding structure of game machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a grounding structure of a game machine, capable of reducing the time of grounding of an electronic device.SOLUTION: A screwing boss 22A and a grounding boss 22B projecting toward a front frame 10 are provided in a mounting base body 22. When the mounting base boy 22 is attached to the front frame 10, the grounding boss 22B is inserted into a boss insertion hole 11b on the front frame 10 side, and the distal end of the grounding boss 22B is brought into contact with a front door upper edge sheet metal body 11A connected to a grounding terminal of a slot machine 1. As an electroconductive metal layer is formed by metal plating, the distal end of the grounding boss 22B is brought into contact with the front door upper edge sheet metal body 11A when the mounting base body 22 is attached to the front frame 10, and grounding terminals (not indicated) of a liquid crystal display device 9C and a subordinate control board 9K become conductive to the front door upper edge sheet metal body 11A through the metal layer of the mounting base body 22, and are connected to the grounding terminal of the slot machine 1.

Description

  The present invention relates to a grounding structure for a gaming machine that grounds an earth terminal of an electronic device installed on a front surface of a gaming machine facing a player.

Conventionally, as a gaming machine that provides amusement to a player, a game that has a plurality of rotating reels with a plurality of types of symbols on the outer peripheral surface and causes the player to stop rotating rotating reels to align the symbols The slot machine to be used is used.
In such a slot machine, a reel unit having a plurality of rotating reels and a plurality of motors for driving each of the rotating reels is provided as a gaming device.
Further, the slot machine is formed in the shape of a hexahedron box that houses the main control device that controls the above-described gaming device, a power supply device that supplies power to the gaming device and the main control device, and these devices. In addition, a housing having a front surface opened and a front door that closes the front opening of the housing and is rotatably attached to the housing via a hinge are provided.

As the front door of the slot machine, an electronic device having advanced functions such as an effect device such as a liquid crystal display device that displays an effect image according to the game situation and a sub-control board that controls the operation of the effect device is provided. There is something that has been.
Such an electronic device is provided with a ground terminal for grounding the electronic device, in other words, electrically connecting the electronic device to the ground.
The ground terminal of the electronic device is electrically connected to a metal frame body provided on the front door. The frame body of this front door is electrically connected to the ground terminal of the power supply device on the housing side. Finally, the ground terminal of the power supply device is grounded, so that the ground terminal of the electronic device is connected to the ground. It has come to be.

  If the electrical connection between the ground terminal of the electronic device and the frame body of the front door and the electrical connection between the frame body of the front door and the ground terminal of the power supply device can be reliably performed, the case of the electronic device The electric potential of the conductive part and the potential of the frame body of the front door are the same as the ground terminal of the power supply device, and the electrostatic shielding effect by the conductive part is secured and external noise can be effectively shielded. It is possible to prevent problems such as malfunctions due to noise.

A ground wire can be used for electrical connection between the ground terminal of the electronic device and the frame body of the front door, and electrical connection between the frame body of the front door and the ground terminal of the power supply device.
At this time, if a ring-shaped terminal fitting (for example, a crimp terminal) with a screw insertion hole is attached to the end of the ground wire, and the terminal fitting is screwed to the other side, the electrical connection between the ground wire and the other side As a result, the electrical contact between the ground terminal of the electronic device and the frame of the front door can be achieved by connecting the ground wire with the terminal fitting at the end. Connection and electrical connection between the frame body of the front door and the ground terminal of the power supply device can be ensured, and thereby malfunctions such as malfunction due to electrical noise can be reliably prevented (see, for example, Patent Document 1). ).

JP 2008-237743 A

  As described above, the grounding structure that electrically connects the ground terminal of the electronic device to the frame body of the front door with the ground wire having the terminal fitting attached to the end portion is a grounding work that does not require mechanical strength. Nevertheless, the terminal fittings are attached with screws that take a long time to work, and the assembly work of the front door is lengthened by this screwing work, so there is a desire to prevent time-consuming grounding work. .

  The present invention has been made to solve such a problem, and an object of the present invention is to provide a grounding structure for a gaming machine that eliminates the time required for grounding an electronic device.

Each invention described in each claim is made to achieve the above-mentioned object. The features of each invention will be described below with reference to the embodiments of the invention shown in the drawings.
In addition, a code | symbol shows the code | symbol used in embodiment of this invention, and does not limit the technical scope of this invention.

(Claim 1)
(Feature point)
The invention described in claim 1 is characterized by the following points.
That is, the invention described in claim 1 is a grounding structure of the gaming machine (1) in which the grounding terminal of the electronic device (9C, 9K) installed on the front surface of the gaming machine (1) facing the player is grounded. A front frame body (10) made of synthetic resin, which is a structure of the front portion of the gaming machine (1), and the front frame in a state of being attached to the back side surface of the front frame body (10). A metal sheet metal body (11A) attached to the body (10) and electrically connected to the ground terminal of the gaming machine (1) and the electronic device (9C, 9K) are fixed. In the state, the front frame body (10) is fixed with screws on the front side, and at least the surface portion is provided with electrical conductivity, and the surface portion and the electronic device fixed on the front side ( 9C, 9K) are in contact with each other, and the surface portion is electrically connected to the ground terminal of the electronic device (9C, 9K). A mounting base body (22) that is electrically conductive, and the mounting base body (22) includes a screw boss (22A) and a grounding boss (each projecting toward the front frame body (10)). 22B) is provided, and the front frame body (10) passes through the front frame body (10), and the screwing boss (22A) on the mounting base body (22) side and the grounding boss ( Boss insertion holes (11B) through which the screws 22B are inserted to reach the sheet metal body (11A) are provided, and the screw bosses (22A) are provided with screw holes (22C) for screwing screws into the front end surfaces. The tip end surface of the grounding boss (22B) is a flat surface having electrical conductivity as a whole, and at least through the surface portion of the mounting base body (22), the electronic device (9C, 9K) electrically connected to the ground terminal, and the mounting base body (22 A screw insertion hole (11C) for inserting a screw to be screwed into the screw boss (22A) is formed corresponding to the screw boss (22A) on the) side, and the mounting base body (22) The screw boss (22A) and the grounding boss (22B) are inserted into the boss insertion hole (11B) on the front frame body (10) side, and the screw boss (22A) and the grounding boss (22B) are inserted. ) With the front end face of the metal plate (11A) in contact with the metal plate (11A), the screw inserted into the screw insertion hole (11C) of the metal plate (11A) is screwed into the screw boss (22A). Thus, the electronic device (9C, 9K) is fixed to the front frame body (10), and when the mounting base body (22) is fixed to the front frame body (10), its ground terminal is The grounding of the gaming machine (1) through at least the surface portion of the mounting base body (22), the tip surface of the grounding boss (22B), and the sheet metal body (11A). Characterized in that it is formed so as to be electrically conductive to the child.

(Claim 2)
(Feature point)
The invention described in claim 2 is the invention described in claim 1, and has the following characteristic points.
That is, the invention according to claim 2 is characterized in that a plurality of the screwing bosses (22A) are provided, and the grounding boss (22B) is disposed between the two screwing bosses (22A). To do.

(Effect of Claim 1)
The present invention configured as described above has the following effects.
That is, according to the first aspect of the present invention, when the electronic device is attached to the front surface side of the mounting base body in which at least the surface portion has electrical conductivity, the surface portion of the mounting base body is fixed to the front surface side. The grounding terminal of the electronic device is in contact with each other so that the surface portion is electrically connected to the grounding terminal of the electronic device. When the mounting base body is in electrical contact with the sheet metal body on the back side of the front frame body when fixed to the side, the ground terminal of the electronic device is electrically connected to the ground terminal of the gaming machine through the sheet metal body. It becomes like this.
Here, the mounting base body is provided with a screwing boss and a grounding boss that respectively protrude toward the front frame body, and among these, a screw hole for screwing the screw into the tip surface of the screwing boss is opened, The entire front end surface of the grounding boss is a flat surface having electrical conductivity, and the entire front end surface of the grounding boss is electrically connected to the ground terminal of the electronic device. A screw insertion hole for inserting a screw to be screwed into a screwing boss on the mounting base body side by providing a boss insertion hole through which the screwing boss and grounding boss on the mounting base body side are inserted to reach the sheet metal body. As the mounting base body is inserted into the boss insertion hole on the front frame body side and the mounting base body is applied to the front side of the front frame body, Each of the tip of the screwing bosses and the ground boss of the base body, comes into contact with the said sheet metal member reaches the sheet metal body disposed on the back side of the front frame member.
Then, with the tips of the screwing boss and grounding boss of the mounting base body in contact with the sheet metal body arranged on the back side of the front frame body, the screws inserted into the screw insertion holes of the sheet metal body are screwed. When the mounting base body is fixed to the front frame body by screwing to the fixing boss and screwing the screw to the screwing boss, the tip of the grounding boss of the mounting base body comes into contact with the sheet metal body. In addition, the entire surface portion of the mounting base body to which electrical conductivity is imparted is electrically connected to the sheet metal body, and is further electrically connected to the ground terminal of the gaming machine through this sheet metal body, As a result, the ground terminal of the electronic device is electrically connected to the ground terminal of the gaming machine via the sheet metal.
At this time, since the entire tip surface of the grounding boss is a flat surface having electrical conductivity, when the tip of the grounding boss is brought into contact with the sheet metal body, the tip of the grounding boss faces the surface of the sheet metal body. Therefore, when the tip of the grounding boss is brought into contact with the surface of the sheet metal body, the contact resistance, which is the electrical resistance between the tip of the grounding boss and the surface of the sheet metal body, is reduced. Is effectively grounded.
Therefore, by attaching the electronic device to the front frame body, the ground terminal of the electronic device automatically conducts to the ground terminal of the gaming machine, so that it takes a long time to ground the electronic device. It is not necessary to perform the stopping operation, and it is possible to prevent the time required for the grounding operation of the electronic apparatus from being performed, thereby achieving the object.

(Effect of claim 2)
According to the invention described in claim 2, in addition to the effect of the invention described in claim 1, the following effect is obtained.
That is, according to the second aspect of the present invention, since the mounting base body is provided with a plurality of screwing bosses and the grounding boss is disposed between the two screwing bosses, the screwing positions located on both sides of the grounding boss are provided. If the screw inserted into the screw insertion hole of the sheet metal body is screwed to the boss, the two parts of the sheet metal body located on both sides of the ground boss are pressed toward the ground boss. The entire surface of the tip of the boss comes into contact with the surface of the sheet metal body, and the contact resistance, which is the electrical resistance between the tip of the grounding boss and the surface of the sheet metal body, can be reliably reduced. In this respect, the grounding operation of the electronic device can be prevented from taking time.

It is a front view showing a slot machine according to an embodiment of the present invention. It is a disassembled perspective view which shows the front door which concerns on the said embodiment from the back side. It is a disassembled perspective view which shows the front door which concerns on the said embodiment from the front side. It is a disassembled perspective view which expands and shows the principal part of the front door which concerns on the said embodiment. It is an expanded sectional view which shows the principal part of the front door which concerns on the said embodiment. It is a disassembled perspective view which shows the housing | casing which concerns on the said embodiment from the front side. It is an expanded sectional view which shows the principal part of the said embodiment. It is sectional drawing which shows the leaf | plate spring body which concerns on the said embodiment.

DESCRIPTION OF EMBODIMENTS Embodiments that are embodiments for carrying out the present invention will be described below with reference to the drawings.
(Schematic configuration of slot machine 1)
As shown in FIG. 1, a slot machine 1 as a gaming machine according to the present embodiment includes three rotary reels 9A, and a plurality of types of symbols written on each of the three rotary reels 9A are predetermined. A game is performed to stop the rotating reel 9A so as to be a combination.
The slot machine 1 employs a metal medal as a game medium, and is configured to start a game when the medal is inserted.
Such a slot machine 1 is provided with a housing 2 having a rectangular front shape in order to accommodate gaming devices necessary for playing games.

The housing 2 is a member that is formed in a hexahedral box shape and has an entire front surface opened. And the opening formed in the front surface of the housing | casing 2 is block | closed with the front door 3 of the size according to the said front surface opening.
As shown in FIG. 2, the front door 3 is rotatably connected to the housing 2 via a biaxial hinge 8 that is separably formed into a door side portion 8A and a housing side portion 8B. It has become a thing.
The front door 3 can be detached from the housing 2 by separating the biaxial hinge 8 into two parts, a door side portion 8A and a housing side portion 8B.
The front door 3 is automatically locked when it is completely closed.

Here, the two biaxial hinges 8 connect the front door 3 to the housing 2 so as to be rotatable, and are separated from the right side edge portion of the front door 3 in FIG. ing.
Further, the biaxial hinge 8 can easily separate the door side portion 8A from the housing side portion 8B by performing a predetermined operation with the front door 3 opened.

Returning to FIG. 1, the front door 3 includes an upper panel portion 4 and a lower panel portion 5 that substantially bisect the front surface thereof as shown in FIG. 1. A lower part of the lower panel part 5 is provided with a saucer part 6A in which a saucer part 6A for storing medals to be paid out at the time of winning is integrally formed. Further, an operation console 7 for performing an operation relating to the game is formed between the upper panel portion 4 and the lower panel portion 5 so as to protrude toward the player side.
Here, the upper panel portion 4 and the lower panel portion 5 have a decorative plate made of synthetic resin attached to the surface in order to ensure an excellent appearance in terms of design.

(Upper panel part 4)
The upper panel 4 is provided with a display window 4A formed in a substantially rectangular shape above the console 7 and in the center in the width direction in FIG.
On the back side of the display window 4A inside the housing 2, the three rotary reels 9A described above are arranged.
Here, the three rotary reels 9A arranged on the back side of the display window 4A allow the symbols printed on the outer peripheral surface thereof to be viewed from the outside of the housing 2 through the display window 4A.

At the upper edge portion of the upper panel portion 4, there is provided an effect lighting device 4B formed in a bowl shape protruding from the upper edge obliquely downward and forward of the slot machine 1. The effect lighting device 4B is disposed substantially at the center of the upper edge portion of the upper panel portion 4, and both end portions thereof do not reach the corners of the upper panel portion 4 and are interrupted at a position in front thereof. It has become.
In addition, on both side edges in the vicinity of the upper end of the upper panel portion 4, the band is formed in a strip shape extending along the side edge of the front door 3 from the upper corner to the vicinity of the upper end edge of the display window 4A. A lighting device 4C is provided.
In addition, below each of these lighting devices for production 4C, a band extending along the side edge of the front door 3 from a position lower than the lighting device for production 4C to the lower end of the front door 3 was formed. An effect lighting device 4D is provided.
Each of these lighting devices for production 4B to 4D includes a light source such as a high-intensity light emitting full-color diode disposed inside a transparent lens, and the visual in the game is turned on or blinking according to the progress of the game. This enhances the production effect.

A display window 4E formed in a rectangular shape smaller than the display window 4A is provided between the display window 4A and the effect lighting device 4B. A liquid crystal display device 9C is arranged on the back side of the display window 4E.
Further, on both sides of the display window 4E, audio output units 4F each having a speaker that generates a sound effect relating to the game are provided.
Here, the liquid crystal display device 9C performs an image display operation for displaying an image for production as a production operation according to the game situation, and also through a production operation from the outside through the display window 4E provided on the front door 3. It is an effect device installed inside the front door 3 so that a certain image display operation can be visually recognized.

(Operating console 7)
The console 7 is provided with various switches necessary for operations in the game.
That is, a key hole 7A into which a key for unlocking the front door 3 is inserted is provided at the right end portion in FIG. A medal insertion portion 7C in which a medal insertion slot 7B for inserting medals is opened is provided obliquely above and to the left of the keyhole 7A.
As shown in FIG. 1, three stop switches 7D that are operated to stop each of the three rotary reels 9A are provided below the medal slot 7B. Among these three stop switches 7D, a max bet switch 7E for betting the maximum number of medals is provided obliquely above and to the left of the stop switch 7D arranged at the left end.
In addition, a start switch 7F that is operated when the three rotary reels 9A are rotated at the same time is provided on the left side of the leftmost stop switch 7D and obliquely below the max bet switch 7E. Yes.

Here, a single bet switch 7G and a settlement switch 7H, which will be described later, are provided in the vicinity of the left side of the max bet switch 7E in FIG.
The max bet switch 7E generally sends an insertion command signal instructing to bet three medals when a player or the like performs a single pressing operation.
In other words, the max bet switch 7E is an insertion switch for betting three medals, which is the maximum number that can be bet by one pressing operation.

Further, the single bet switch 7G sends an insertion command signal instructing to bet one medal when a player or the like performs a single pressing operation.
In other words, the single bet switch 7G is an insertion switch for betting one medal with one pressing operation.

The remaining settlement switch 7H, when a player or the like performs a pressing operation, sends a settlement command signal instructing to perform the settlement operation of the stored medals or to return the bet medals. .
That is, the settlement command signal of the settlement switch 7H is used when the settlement is performed to stop the game, in other words, when the settlement switch 7H is pressed by the player or the like when no bet is placed on the medal. This is an opportunity to pay out all the stored medals output from the switch 7H.
In addition, the settlement command signal of the settlement switch 7H is sent to the medal when the settlement switch 7H is pressed after the bet of the medal is made by pressing either the maximum bet switch 7E or the single bet switch 7G. In other words, this is an opportunity to return the medal credit value reduced by medal bet to the original credit value.

(Lower panel part 5 and saucer part 6A)
The lower panel portion 5 is provided with a panel 5A on which characters and the like symbolizing the model type of the slot machine 1 are drawn.
In addition to the above-described saucer unit 6A for storing medals, the saucer unit 6A includes a medal payout opening 6B for discharging medals paid out toward the saucer unit 6A when winning a prize, and a speaker for generating sound effects relating to the game. And an audio output unit 6C.

(Internal device housed in the housing 2)
Next, an internal device provided inside the housing 2 will be briefly described.
Inside the housing 2, although not particularly shown, a main board case containing a main control board having a CPU comprising a microcomputer for controlling the gaming operation of the slot machine 1, and three rotating reels 9 A are rotatable. A reel unit including a motor that supports and drives each of these rotary reels 9A, a hopper unit that includes a container portion for storing a large number of medals therein and discharges medals toward the tray portion 6A, and these A power supply device for supplying power to the device is provided.

Among these, the reel unit is an electrically driven gaming device that performs an operation related to the game, and has the three rotary reels 9A described above. Each of these rotary reels 9A is formed in a cylindrical shape, and a plurality of types of symbols (not shown) are described on the outer peripheral surfaces thereof.
In the above, the housing 2 is formed in a box shape in which the above-described reel unit, which is a gaming apparatus, is housed and the front face facing the player is opened.

As shown in FIG. 2, a liquid crystal display device 9 </ b> C having a screen exposed on the front surface is attached to the back surface of the front door 3. On the back surface of the liquid crystal display device 9C, there is provided a sub-board case 9J containing a sub-control board 9K for controlling the operations of the liquid crystal display device 9C, the lighting devices for production 4B to 4D and the sound output units 4F and 6C. .
In addition, a medal selector 9B for determining the suitability of the inserted medal is provided on the back surface of the front door 3 corresponding to the medal slot 7B opened on the front surface.
In the above, the sub-control board 9K is an electronic device that controls operations of the effect devices such as the liquid crystal display device 9C and the effect lighting devices 4B to 4D. The liquid crystal display device 9C is an electronic device that displays an effect image on a screen.

(Structure of front door 3)
Below, the structure of the front door 3 is demonstrated in detail.
That is, as shown in FIG. 3, the front door 3 includes a square front frame body 10 disposed on the back side of the front door 3, an upper mask assembly 20 that forms an upper end portion of the front door 3, and a lower end of the front door 3. The lower mask assembly 30 forming a part, the left side assembly 40 forming the left edge of the front door 3, the right side assembly 50 forming the right edge of the front door 3, and the console assembly forming the console 7 60 and a window panel assembly 70 forming the display window 4A.

The front frame body 10 is a synthetic resin member formed in a square frame shape according to the contour of the front surface of the front door 3. The front frame body 10 includes an upper edge portion 11, a lower edge portion 12, a left edge portion 13, and a right edge portion 14 that form the upper side, the lower side, the left side, and the right side of the square frame.
The front frame body 10 is configured such that the left side assembly 40, the right side assembly 50, the upper mask assembly 20, and the lower mask assembly 30 are attached to the front surface in FIG. 3 with screws (not shown).

The front frame body 10 extends along the lower edge of the upper mask assembly 20 at a height corresponding to the lower edge of the upper mask assembly 20, and the middle portions of the left edge 13 and the right edge 14 are mutually connected. Reinforcing bar 15 is provided to connect to.
Further, a metal front door sheet metal body 13A extending in the vertical direction is screwed to the left side edge 13 in FIG. 3 of the front frame body 10 while being attached to the left side edge 13.
The front door sheet metal 13A is screwed to the front frame body 10 with the door side 8A of the two hinges 8 screwed and the door side 8A of the biaxial hinge 8 screwed. It is supposed to be.

The upper mask assembly 20 is an assembly in which parts forming the upper end portion of the front door 3 are combined.
This upper mask assembly 20 includes the above-described liquid crystal display device 9C, sub-board case 9J incorporating the sub-control board 9K, effect lighting device 4B, audio output unit 4F, sub-control board 9K, sub-board case 9J, and effect lighting. A device 4B, an audio output unit 4F, and the like are provided.
The upper mask assembly 20 will be described in more detail later.

The lower mask assembly 30 is an assembly in which parts forming the lower half of the front door 3 are combined.
The lower mask assembly 30 includes the panel 5A, the saucer 6A, the audio output unit 6C, and the like described above.

The left side assembly 40 has a side shape obtained by connecting two triangular chevron shapes in the longitudinal direction. Such a left side assembly 40 is provided with the effect lighting device 4C and the effect lighting device 4D that extend in the above-described band shape.
Like the left side assembly 40, the right side assembly 50 has a side shape in which two triangular ridges are connected in the longitudinal direction. The lighting device 4C for production and the lighting device 4D for production that extend in the above-described belt shape. It has.

The console assembly 60 is an assembly in which parts forming the console 7 that protrudes from the front surface of the front door 3 toward the player are combined.
The console assembly 60 includes a medal insertion portion 7C, a stop switch 7D, a start switch 7F, and the like.

  The window panel assembly 70 includes a frame portion 71 surrounding the display window 4A, which is a window formed to show the internal gaming device from the outside, and a display window of the frame portion 71 to protect the internal gaming device. It has a transparent surface material 72 fitted in 4A.

(Upper mask assembly 20)
As shown in FIG. 3, the upper mask assembly 20 includes a mask member 21 that forms the upper surface of the front door 3 and a mounting base that is joined to the front door 3 in a state in which the liquid crystal display device 9C that is a rendering device is fixed. The body 22, the aforementioned sub-board case 9J, and the protective transparent surface material 23 fitted into the display window 4E are combined.

The mask member 21 is a synthetic resin molded product that forms the upper surface of the front door 3, and the above-described lighting device for performance 4B is attached to the vicinity of the upper edge of the front surface facing the player side. Yes.
The mask member 21 has an opening at a position corresponding to the audio output unit 4F in order to allow the audio of the audio output unit 4F disposed on the left and right sides of the display window 4E in FIG.

The mounting base body 22 is a member for mounting the sub-board case 9J housing the sub-control board 9K and the liquid crystal display device 9C to the front door 3.
That is, as shown in FIG. 3, a mask member 21 is attached to the front surface of the attachment base body 22 facing the player. Further, the sub-board case 9J is attached to the opposite surface of the attachment base body 22.
Here, in the sub-board case 9J, the liquid crystal display device 9C is fixed to the front side, and the sub-control board 9K is fixed inside. Thus, the sub-board case 9J to which the liquid crystal display device 9C and the sub-control board 9K are fixed is fixed to the front surface side of the mounting base body 22.
The attachment base body 22 is screwed to the front frame body 10 of the front door 3 with the sub-board case 9J attached. Thus, the liquid crystal display device 9C and the sub control board 9K are attached to the front frame body 10 of the front door 3.

(Grounding structure of slot machine 1)
In the slot machine 1 as described above, first to first ground terminals (not shown) of the liquid crystal display device 9C and the sub control board 9K are electrically connected to a ground terminal (not shown) of a power supply device 9D (to be described later) of the slot machine 1. 3 conduction structures are provided.
Then, by these first to third conduction structures, the liquid crystal display device 9C, which is an electronic device installed on the front surface of the slot machine 1 facing the player side, and ground terminals (not shown) of the sub-control board 9K are grounded. A grounding structure for the gaming machine is formed.

(First conduction structure)
In the first conductive structure, the ground terminals (not shown) of the liquid crystal display device 9C and the sub control board 9K which are electronic devices are electrically connected to a front door upper edge sheet metal 11A described later provided on the back side of the front door 3. It is what
That is, the above-described front frame body 10 is provided in the slot machine 1 as a structure of the front door 3 that is a front portion of the slot machine 1.
As shown in FIG. 4, a mounting base body 22 in a state where the liquid crystal display device 9C and the sub-control board 9K are fixed is attached to the front side of the upper portion of the front frame body 10.
In addition, a metal front door upper edge sheet metal body 11A formed in a groove-shaped cross section is attached to the rear surface of the upper edge portion 11 of the front frame body 10 in a state of being attached to the rear surface. It is supposed to be.

Here, the mounting base body 22 is formed by metal plating on the entire surface. In other words, a metal film is entirely formed on the surface portion of the mounting base body 22, and electrical conductivity is imparted by the metal film.
Then, the surface portion of the mounting base body 22 comes into contact with the liquid crystal display device 9C and the ground terminal (not shown) of the sub control board 9K fixed to the front side of the mounting base body 22, and the liquid crystal display apparatus 9C and the sub control board It is electrically connected to a 9K ground terminal (not shown).

The mounting base body 22 is provided with a plurality of screwing bosses 22A and a plurality of grounding bosses 22B that protrude from the vicinity of the upper edge of the rear surface toward the front frame body 10, respectively. Yes.
Here, one screwing boss 22A provided on the mounting base body 22 is provided more than the grounding boss 22B.
In other words, the plurality of grounding bosses 22B provided on the mounting base body 22 are arranged one by one between the two screwing bosses 22A.

The screw boss 22A is formed with a screw hole 22C for screwing a screw (not shown) into the distal end surface.
The grounding boss 22B has a flat tip surface as a whole. The tip end surface of the grounding boss 22B is a surface having electrical conductivity as a whole, and through the metal film formed on the surface of the mounting base body 22, the liquid crystal display device 9C and the sub-control board 9K (not shown) Electrically connected to the terminal.

On the other hand, the upper edge portion 11 of the front frame body 10 penetrates the upper edge portion 11 of the front frame body 10 according to the screwing boss 22A and the grounding boss 22B on the mounting base body 22 side, A boss insertion hole 11B through which the screw boss 22A and the grounding boss 22B on the body 22 side are inserted to reach the front door upper edge sheet metal 11A is provided.
The front door upper edge metal plate 11A is formed with a screw insertion hole 11C through which a screw (not shown) to be screwed to the screw boss 22A is inserted corresponding to the screw boss 22A on the mounting base body 22 side. Yes.

  The mounting base body 22 has a screw boss 22A and a grounding boss 22B inserted through the boss insertion hole 11B on the front frame body 10 side, and the front end surfaces of the screwing boss 22A and the grounding boss 22B are connected to the front door upper edge sheet metal body. 11a is fixed to the front frame body 10 by screwing a screw (not shown) inserted into the screw insertion hole 11C of the front door upper edge metal plate 11A into the screw boss 22A. It has become.

As described above, when the mounting base body 22 is fixed to the front frame body 10, as shown in FIG. 5, the grounding boss 22B of the mounting base body 22 has a tip portion at the boss insertion hole 11B on the front frame body 10 side. , And the front end face comes into contact with the front door upper edge sheet metal body 11A.
Then, the ground terminal (not shown) provided on each of the liquid crystal display device 9C and the sub control board 9K is electrically connected to the front door upper edge sheet metal 11A through the metal film on the surface of the mounting base body 22 and the front end surface of the grounding boss 22A. It comes to be conductive.
In other words, the metal film formed on the surface of the mounting base body 22 and the front end surface of the grounding boss 22A electrically connect the ground terminals (not shown) of the liquid crystal display device 9C and the sub-control board 9K to the front door upper edge metal plate 11A. A first conductive structure is formed which is conductive to the first electrode.

(Second conduction structure)
The second conduction structure electrically connects the front door upper edge sheet metal body 11A on the front door 3 side to a later-described housing sheet metal body 2A provided on the housing 2 side.
Returning to FIG. 2, the front frame body 10 of the front door 3 has, as described above, the upper edge portion 11 that forms the upper side disposed above the square frame in FIG. 2, and the square frame in FIG. 2. The left side edge part 13 which forms the left side arrange | positioned on the right side of is provided.

The front door upper edge sheet metal body 11A is joined to the mounting base body 22 with screws as described above with the upper edge portion 11 of the front frame body 10 sandwiched between the mounting base body 22 and the front base body metal body 11A. The front frame body 10 is fixed.
The front door sheet metal 13A is a long member having an L-shaped cross section. The front door sheet metal 13A is screwed to the front frame body 10 with the front door upper edge sheet metal 11A attached to the upper edge 11.

Here, the front door sheet metal body 13A has a conductive member 11D interposed between an upper end portion arranged at the upper side in FIG. 2 and an end portion of the front door upper edge sheet metal body 11A. The upper end portion of the edge metal plate 11A is superposed on the front door upper edge metal plate 11A, and is screwed to the front frame body 10.
Here, the front door upper edge sheet metal body 11A and the front door sheet metal body 13A are electrically connected to each other via a conduction member 11D interposed therebetween.

By the way, as shown in FIG. 6, the housing 2 includes a top plate portion 2B provided above, a bottom plate portion 2C provided below, and a left side plate forming a left side portion in FIG. It includes a portion 2D, a right side plate portion 2E forming a right side portion, and a back plate portion 2F provided on the back portion.
Among these, the housing side portion 8B of the biaxial hinge 8 is screwed to the left side plate portion 2D. Thereby, the front door 3 is rotatably attached to the left side plate portion 2D.
As shown in FIG. 6, on the side edge of the front side of the left side plate portion 2D, the above-described housing sheet metal body 2A, which is a long metal member extending in the vertical direction in FIG. It is attached along the side edge on the front side of 2D.

On the other hand, the front door 3 is an elongated member having an L-shaped cross section extending in the longitudinal direction of the front door metal plate 13A, and is a metal leaf spring screwed to the front frame body 10 together with the front door metal plate 13A. A body 13B is provided.
This leaf spring body 13B is formed in an L shape in a plane cross section, and as shown in FIG. 7, with the front door 3 closed, one side of the L shape extends from the front door metal plate 13A to the housing. It is an elastic protruding piece 13C that protrudes toward the housing metal plate 2A on the second side, and one side of the L-shape is a fixed portion 13D that runs along the front door metal plate 13A.

Here, as shown in FIG. 8, the casing sheet metal body 2 </ b> A has a cross-sectional shape of a distal end portion 2 </ b> J arranged at the lower side in FIG. 7 bent in a crank shape.
Further, the elastic protrusion 13C provided on the leaf spring body 13B is such that the cross-sectional shape of the tip end portion 13E is bent into a “<” shape.
Further, the front door sheet metal body 13A is a protruding piece 13F that protrudes toward the housing sheet metal body 2A on the housing 2 side with the front door 3 closed, and the other side of the L shape is the other side. The fixing piece 13G is screwed to the front frame body 10.
The leaf spring body 13B is fixed to the front frame body 10 together with the front door metal plate 13A with the front end of the fixing portion 13D facing the protruding piece 13F side of the front door metal plate 13A, and the elastic protruding piece 13C is It is separated from the protruding piece 13F on the door sheet metal 13A side.

In the above, the corner portion 13H bent in the shape of the “<” shape formed at the distal end portion 13E of the leaf spring body 13B has the front door 3 closed with the front door 3 closed as shown in the enlarged view of FIG. The front end side surface 2K of the front end portion 2J formed in a crank shape of the sheet metal body 2A comes into contact.
More specifically, the corner portion 13H of the leaf spring body 13B comes into contact with the front end side surface 2K of the housing sheet metal body 2A before the front door 3 is completely closed. In this state, when the front door 3 moves in the closing direction, the elastic protrusion 13C of the leaf spring body 13B is elastically deformed. When the front door 3 is completely closed, the elastic protrusion 13C is elastic, The corner portion 13H of the leaf spring body 13B is in contact with the front end side surface 2K of the housing sheet metal body 2A in a pressed state.

Thus, when the front door 3 is completely closed, the leaf spring body 13B and the housing sheet metal body 2A are electrically connected to each other.
The plate spring body 13B and the housing sheet metal body 2A form a second conduction structure that electrically connects the front door upper edge sheet metal body 11A on the front door 3 side to the housing sheet metal body 2A on the housing 2 side. Has been.

A gap 13J is formed between the front side edge of the left side plate portion 2D in the housing 2 and the front door 3, as shown in FIG. 7, but the gap 13J is disposed inside the gap 13J. Further, the protruding piece 13F of the front door metal plate 13A, the tip 2J of the housing metal plate 2A, and the elastic protruding piece 13C of the plate spring body 13B are closed.
Thus, even when an elongated instrument such as a wire is inserted into the gap 13J, the protruding piece 13F of the front door sheet metal body 13A, the tip 2J of the housing sheet metal body 2A, and the elastic protrusion 13C of the leaf spring body 13B are barriers. Thus, the elongate instrument cannot enter the inside of the housing 2.

(Third conduction structure)
The third conduction structure electrically connects the casing sheet metal body 2A attached to the casing 2 to a ground terminal (not shown) of the power supply device 9D.
That is, the side surface on the front surface side of the bottom plate portion 2C in the housing 2 is formed in a “concave” shape in a planar shape, and is made of metal that extends over the entire front side edge of the bottom plate portion 2C. A bottom sheet metal body 2G is attached.

Further, a power supply device 9D is placed on the bottom plate portion 2C. In the power supply device 9D, the side edge portion on the front surface side on the bottom surface overlaps the bottom sheet metal body 2G, and the metal casing of the power supply device 9D is electrically connected to the bottom sheet metal body 2G. Thereby, a ground terminal (not shown) of the power supply device 9D is electrically connected to the bottom sheet metal body 2G.
Note that a ground terminal (not shown) of the power supply device 9D is connected to the ground via a grounding rod (not shown) provided in the game arcade.

The bottom sheet metal body 2G as described above forms a third conduction structure that electrically connects the housing sheet metal body 2A of the housing 2 to a ground terminal (not shown) of the power supply device 9D.
In addition, the ground terminals (not shown) of the liquid crystal display device 9C and the sub-control board 9K, which are electronic devices installed on the front surface of the slot machine 1 facing the player, are connected to the power supply device 9D by the first to third conductive structures. Are connected to a ground terminal (not shown), and thus connected to the ground, thereby forming a ground structure for grounding the liquid crystal display device 9C and the sub-control board 9K.

According to this embodiment as described above, the following effects can be obtained.
That is, when electrical conductivity is imparted to the surface portion of the mounting base body 22, and the liquid crystal display device 9C and the sub-control board 9K are mounted on the front side of the mounting base body 22, the surface portion of the mounting base body 22 and the liquid crystal display Since the device 9C and the ground terminal (not shown) of the sub control board 9K are in contact with each other, when the liquid crystal display device 9C and the sub control board 9K are attached to the mounting base body 22, the surface portion of the mounting base body 22 and the liquid crystal Electrical connection between the display device 9C and the sub-control board 9K with a ground terminal (not shown) is automatically performed.

  Then, the mounting base body 22 is provided with a screwing boss 22A and a grounding boss 22B that project toward the front frame body 10, and among these, a screw hole 22C for screwing a screw into the front end surface of the screwing boss 22A is provided. The liquid crystal display device is opened, and the entire front end surface of the grounding boss 22B is a flat surface having electrical conductivity, and the entire front end surface of the grounding boss 22B passes through the surface portion of the mounting base body 22. 9C and the sub-control board 9K are electrically connected to a ground terminal (not shown), and the front frame 10 is inserted with a screw boss 22A and a ground boss 22B on the mounting base body 22 side through the front frame body 10, respectively. Since the boss insertion hole 11B that reaches the upper edge metal plate 11A is provided, and the screw insertion hole 11C that allows the screw to be screwed to the screw boss 22A on the mounting base body 22 side is formed in the front door upper edge metal plate 11A. , Mounting base body 22 screws When the boss 22A and the grounding boss 22B are inserted into the boss insertion hole 11B on the front frame body 10 side and the mounting base body 22 is applied to the front side of the front frame body 10, the screw boss 22A and The front ends of the grounding bosses 22B reach the front door upper edge sheet metal body 11A disposed on the back side of the front frame body 10, and come into contact with the front door upper edge sheet metal body 11A.

  Then, with the front ends of the front door upper edge sheet metal body 11A arranged on the back side of the front frame body 10 in contact with the front ends of the screwing boss 22A and the grounding boss 22B of the mounting base body 22, When the screw inserted into the screw insertion hole 11C of the metal plate 11A is screwed into the screw fixing boss 22A, and the mounting base body 22 is fixed to the front frame body 10 by screwing the screw into the screw fixing boss 22A, the mounting base 22 Since the tip of the grounding boss 22B of the body 22 is in contact with the front door upper edge sheet metal body 11A, the entire surface portion of the mounting base body 22 to which electrical conductivity is imparted is the front door upper edge sheet metal body. 11A is electrically connected to the ground terminal 11A of the front door, the second conductive structure, and the third conductive structure to the ground terminal of the slot machine 1, that is, the ground terminal (not shown) of the power supply device 9D. As a result, the liquid crystal display device 9C and the secondary control Ground terminal board 9K is via the front door on the edge of sheet metal member 11A, so that the electrically conductive to the ground terminal of the slot machine 1.

At this time, since the entire tip surface of the grounding boss 22B is a flat surface having electrical conductivity, when the tip of the grounding boss 22B is brought into contact with the front door upper edge metal plate 11A, the grounding boss 22B Since the tip is in surface contact with the surface of the front door upper edge metal plate 11A, when the tip of the grounding boss 22B is brought into contact with the surface of the front door upper edge metal plate 11A, the tip of the grounding boss 22B and the front door The contact resistance, which is the electrical resistance with the surface of the edge metal plate 11A, is reduced, and the liquid crystal display device 9C and the sub-control board 9K can be grounded effectively and reliably.
Accordingly, by attaching the liquid crystal display device 9C and the sub-control board 9K to the front frame body 10, the ground terminals of the liquid crystal display device 9C and the sub-control board 9K are automatically conducted to the ground terminal of the slot machine 1. Therefore, it is not necessary to perform time-consuming screwing work only for grounding the liquid crystal display device 9C and the sub control board 9K, so that the grounding work of the liquid crystal display device 9C and the sub control board 9K does not take time. be able to.

  Further, since the mounting base body 22 is provided with a plurality of screw bosses 22A and the grounding boss 22B is disposed between the two screwing bosses 22A, the metal plate is attached to the screwing bosses 22A located on both sides of the grounding boss 22B. If the screws inserted into the body screw insertion holes are screwed together, the two parts of the front door upper edge metal plate 11A located on both sides of the grounding boss 22B will be pressed toward the grounding boss 22B. The entire front end surface of the grounding boss 22B comes into contact with the surface of the front door upper edge sheet metal body 11A, and the electric resistance between the front end of the grounding boss 22B and the surface of the front door upper edge sheet metal body 11A. The contact resistance can be reliably reduced, and the effective grounding of the liquid crystal display device 9C and the sub-control board 9K is performed reliably and quickly. From this point also, the grounding work of the liquid crystal display device 9C and the sub-control board 9K is performed. You can keep it from taking time.

  Further, a metal housing sheet metal body 2A is provided at the front side edge of the left side plate portion 2D of the housing 2, and the bottom sheet metal body 2G is brought into contact with the bottom sheet metal body 2G. Is electrically connected to the ground terminal of the power supply device 9D, which is the ground terminal on the housing 2 side, and on the side edge of the front door 3 corresponding to the side edge of the housing 2 where the housing sheet metal body 2A is provided. A metal front door sheet metal body 13A, and a metal leaf spring body 13B protruding from the front door sheet metal body 13A toward the housing sheet metal body 2A on the housing 2 side with the front door 3 closed. When the front door 3 is closed, the leaf spring body 13B is in contact with the casing sheet metal body 2A and is electrically connected to the ground terminal on the casing 2 side via the casing sheet metal body 2A. Therefore, when the front door 3 is closed, the tip of the leaf spring body 13B is strongly pressed against the housing sheet metal body 2A by the elastic force of the leaf spring body 13B itself. Since the tip of the spring body 13B is in contact with the housing sheet metal body 2A, the contact resistance between the tip of the leaf spring body 13B and the surface of the housing sheet metal body 2A is reduced, and thereby the electrical resistance between each other is reduced. In a small state, the front door 3 and the ground terminal on the side of the housing 2 can be electrically connected to each other, so that the front door 3 can be effectively grounded and the front door 3 can be grounded. Since a time-consuming screwing operation is not required, the grounding operation of the front door 3 can be prevented from taking time.

In addition, this invention is not limited to the said embodiment, The deformation | transformation in the range which can achieve the objective of this invention, improvement, etc. are included.
For example, in the above-described embodiment, as the hinge, the biaxial hinge 8 in which the door side portion 8A and the housing side portion 8B can be easily separated by performing a predetermined operation with the front door 3 opened. However, the present invention is not limited to this, and a hinge with a separation lock that cannot be separated from the door side and the housing side without unlocking with a key may be adopted. Can be further improved.
Furthermore, the gaming machine is not limited to a slot machine, but may be an arcade game installed in a game center or the like, and the present invention is a game in which an electronic device such as a liquid crystal display device or a sub-control board is provided in the front portion. It can be applied to all machines.

1 Slot machines as gaming machines
2 Enclosure
3 Front door
9C Liquid crystal display as an electronic device
Sub-control board as 9K electronic device
10 Front frame body
11A Sheet metal body of the front door upper edge
11B Boss insertion hole
11C Screw insertion hole
22 Mounting base body
22A screw boss
22B Grounding boss
22C Screw hole

Claims (2)

A grounding structure for a gaming machine that grounds a ground terminal of an electronic device installed on the front of the gaming machine facing the player side,
A front frame body made of synthetic resin, which is a structure of the front portion of the gaming machine,
A metal sheet metal body attached to the front frame body and electrically connected to the ground terminal of the gaming machine in a state of being attached to the back side surface of the front frame body,
In a state where the electronic device is fixed, it is fixed to the front side of the front frame body with screws, and at least the surface portion is provided with electrical conductivity, and is fixed to the surface portion and the front side. A mounting base body that is in contact with the ground terminal of the electronic device and whose surface portion is electrically connected to the ground terminal of the electronic device;
The mounting base body is provided with screwing bosses and grounding bosses respectively protruding toward the front frame body,
The front frame body is provided with a boss insertion hole that penetrates the front frame body and allows the screwing boss and the grounding boss on the attachment base body side to reach the sheet metal body, respectively.
The screwing boss has a screw hole that is screwed into the tip end surface,
The tip end surface of the grounding boss is a flat surface having electrical conductivity as a whole, and is electrically connected to the ground terminal of the electronic device at least through the surface portion of the mounting base body. ,
In the sheet metal body, a screw insertion hole for inserting a screw to be screwed into the screwing boss is formed corresponding to the screwing boss on the mounting base body side,
The mounting base body is configured such that the screw boss and the grounding boss are inserted into the boss insertion hole on the front frame body side, and the tip surfaces of the screw boss and the grounding boss are brought into contact with the sheet metal body. In this state, by screwing the screw inserted through the screw insertion hole of the sheet metal body into the screw boss, it is fixed to the front frame body,
In the electronic device, when the mounting base body is fixed to the front frame body, the ground terminal passes through at least the surface portion of the mounting base body, the tip end surface of the grounding boss, and the sheet metal body. A grounding structure for a gaming machine, wherein the grounding structure is formed so as to be electrically connected to a ground terminal of the machine. A plurality of the screwing bosses are provided,
2. The grounding structure for a gaming machine according to claim 1, wherein the grounding boss is disposed between two screwing bosses.

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