JP4056109B2 - Back mechanism panel - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a back mechanism board of a ball game machine.
[0002]
[Prior art]
For example, a ball game machine such as a pachinko machine or an arrangement ball pachinko machine has a game board with a path for paying out game balls and a path for discharging game balls (used game balls) that have passed through the game board surface. Was arranged on the back of the. Usually, these passages and the like are provided as a part of the back mechanism board, and this back mechanism board is also a control device (also referred to as a control board), an external connection board having external connection terminals, a control device and a winning device, It also plays a role of holding boards such as relay boards that relay sensors, solenoids, motors, and the like, and a dispensing device.
[0003]
Therefore, a large amount of various electric wires such as signal lines and power lines are attached to the back mechanism board. Conventionally, these wires should be as compact and as compact as possible by binding them appropriately or using a flat cable according to the arrangement of components attached to the back mechanism panel and the convenience of wiring. Had been wired to.
[0004]
[Problems to be solved by the invention]
By the way, since vinyl chloride is used for covering the wires, it is known that harmful chlorine compounds are generated when incinerated. On the other hand, the back mechanism board body often uses a plastic that does not contain chlorine, such as polyethylene terephthalate (PET). Accordingly, the back mechanism board itself is relatively easy to incinerate or use as a recycled material, for example. However, when electric wires, that is, vinyl chloride are mixed there, they cannot be incinerated or used as recycled materials. Therefore, when discarding the back mechanism panel, it is necessary to separate at least the electric wire and the back mechanism panel body.
[0005]
However, in the conventional back mechanism panel, the convenience of the manufacturing process and the convenience of maintenance are prioritized, and the convenience of disposal such as the ease of removing the electric wire has not been considered much.
An object of this invention is to provide the back mechanism board which can remove easily the electric wire which obstructs disposal.
[0006]
[Means for Solving the Problems and Effects of the Invention]
The back mechanism board according to claim 1 for solving the above-mentioned problem is a frame shape having a window facing the back of the game board, and a game ball won in the winning opening of the game board is placed below the window. A winning ball collecting passage for collecting and an out ball discharge path for discharging the game ball flowing into the out hole of the game board are provided, and the game balls paid out by the payout device are drawn from one side to the lower part of the window. A control device for controlling the operation of a variable winning device attached to a game board, and a ball game machine including a prize ball passage for guiding, an external connection terminal for connecting an external electric wire outside the ball game machine, The back mechanism board that holds the relay board interposed between the internal electric wire connected to each part of the game machine and the control device and is attached to the back of the game board includes the winning ball collecting path and the out ball discharging path. No part with the first structural layer The prize ball passage is provided as a second structure layer in contact with the back of the first structure layer, and a portion where the second structure layer is not provided behind the first structure layer is defined as a substrate storage portion in the substrate storage portion. The relay board is arranged, and a series of spaces extending from the back of the second structure layer to the board housing portion is formed into a groove shape to form a wiring layer for housing the internal electric wire.
[0007]
That is, the internal wiring is intensively arranged on the most back side of the back mechanism board and at a place along the prize ball passage. For this reason, the wiring work itself of the internal wiring is simplified, and the removal work of the internal wiring is also simplified. Therefore, when discarding the back mechanism panel, it is easy to separate the electric wire containing vinyl chloride from other plastics, which is extremely suitable for discarding the back mechanism panel.
[0008]
Further, since the relay board is arranged in the board housing portion, there is an effect of reducing the depth of the back mechanism board, that is, the depth of the ball game machine.
The wiring layer does not necessarily require a cover, but it is better to provide a cover in order to prevent damage due to dust or the like. In that case, it is preferable to make it as described in claim 2.
[0009]
That is, the back mechanism board according to claim 2 is the back mechanism board according to claim 1, wherein a board case for housing the control device is arranged on the back side of the board housing portion so as to be openable and closable. And an openable / closable wiring cover serving as a lid for a portion of the wiring layer not covered with the substrate case.
[0010]
In the back mechanism board according to the second aspect, since a part of the cover of the wiring layer is also used as the board case, the total amount of components can be reduced.
Moreover, since the board case and wiring cover can be opened and closed with respect to the back mechanism panel, they are normally closed. For example, when the internal wiring is removed during maintenance or inspection of the internal wiring or when it is discarded. Can open and work. Accordingly, the substrate case and the wiring cover do not hinder the work related to the internal wiring.
[0011]
By the way, on the back mechanism board, for example, a mechanism (for example, a winning ball discharging device disclosed in Japanese Utility Model Laid-Open No. 5-15986) for discharging game balls assembled by a winning ball collecting passage one by one or ball removing A mechanism (for example, a ball removal device disclosed in Japanese Patent Laid-Open No. 7-185092) for switching a game ball discharge path when the device is operated is incorporated. That is, sensors (sensors and switches) and solenoids for detecting game balls are attached. Therefore, these attachments and wiring are required.
[0012]
The back mechanism board according to claim 3 is the back mechanism board according to claim 1 or 2, wherein sensors for detecting game balls in the first structure layer or the second structure layer, the first structure layer, Since all the solenoids for driving the movable parts arranged in the second structural layer are detachable from the wiring layer or from the detachable opening that opens to the wiring layer side, all of these sensors and solenoids are attached and detached. This can be done from the wiring layer side. Moreover, the internal electric wires connected to these sensors and solenoids can also be wired from the wiring layer.
[0013]
Therefore, the attachment and removal of sensors and solenoids, and the attachment and removal of internal wiring connected to them can be performed only on the back side of the back mechanism panel, and the work is also simple.
Furthermore, as described in claim 4, if the first structure layer is openable and closable with respect to the second structure layer side, there are sensors, solenoids, and the like that are difficult to attach and detach only by work from the wiring layer side. However, they can be more easily attached and detached.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described by describing specific examples of the present invention with reference to the drawings.
[0015]
【Concrete example】
As shown in FIG. 1, the back mechanism panel 10 of this specific example is configured around a back frame 12 serving as a main body.
A window 14 is provided at the center portion of the back frame 12 so that the back of the game board (not shown) can be faced, and the back frame 12 has a frame shape as a whole. A prize ball tank 16 is attached from the center of the upper part of the back frame to the left side. A lever hole 18 is provided in the bottom of the prize ball tank 16, and a tank lever 20 is disposed inside the lever hole 18. The tank lever 20 is attached to the back frame 12 by fitting a bearing 22 to a shaft pin erected on the back frame 12, and the tank lever 20 is a load of a game ball in the prize ball tank 16, that is, a game. Depending on the presence or absence of a sphere, the shaft pin moves up and down. A tank switch 24 is attached to the back frame 12 immediately below the tank lever 20. Specifically, the tank lever 20 and the tank switch 24 are arranged in such a positional relationship that the protrusion 26 of the tank lever 20 is on the operating piece 28 of the tank switch 24, and the tank switch 24 is turned on in response to the raising and lowering of the tank lever 20. Can be changed off.
[0016]
A rail back plate 30 is attached to the lower side of the prize ball tank 16 of the back frame 12 so as to cover the tank switch 24, and an alignment rail 32 is attached to the rail back plate 30. Between the strip and the alignment rail 32 and the rail back plate 30, one alignment passage is provided in total, that is, two strips. Further, between the rail back plate 30 and the alignment rail 32, a rectifying insulator 36 held by a shaft pin standing on the back frame 12 is disposed, and an alignment plate 38 is attached to the downstream end of the alignment rail 32. ing.
[0017]
An external relay board mounting portion 40 is provided at the upper right corner of the back frame 12, and an external relay board 42 is attached thereto, and a relay board cover 44 covering the external relay board 42 is attached.
A bypass section 46 is provided below the external relay board mounting section 40, and a dispensing device 48 is mounted so as to cover the bypass section 46. However, the payout device 48 does not fill the bypass portion 46, and the wire bundle can be passed between the payout device 48 and the bypass portion 46.
[0018]
The payout device 48 has a structure for paying out a game ball by rotating a flight screw as disclosed in, for example, Japanese Patent Application Laid-Open No. 5-42248, and its ball inlet (not shown) is connected to the downstream end of the alignment rail 32. The game balls that have passed through the alignment rail 32 flow into the payout device 48. In addition, a ball outlet (not shown) of the payout device 48 is connected to a prize ball bowl inlet 50 provided to project from the back side of the back frame 12.
[0019]
As shown in FIG. 2, on the front side of the back frame 12, a prize ball bowl 52 that communicates with the prize ball bowl entrance 50 is provided. A U-shaped upper plate guide member 54 (see FIG. 1) is disposed on the downstream side of the prize ball bowl 52, and a bell 55 (see FIG. 1) is installed above the upper plate guide member 54. ing. The game ball that has passed the prize ball bowl 52 collides with the bell 55 and rings it, then reaches the upper plate guide member 54, and is guided to the front side (the front side of the drawing) by the upper plate guide member 54. It is discharged to an upper tray provided at the front of the machine.
[0020]
Further, a lower plate guide rod 56 is provided from the left side to the lower side in FIG. 2 of the upper plate guide member 54, and its downstream end is opened as a lower plate discharge port 58. The lower tray discharge port 58 is connected to a lower tray provided at the lower front portion of the ball game machine. With this configuration, when the upper tray is full and even the upper tray guide member 54 is filled with game balls, the game balls that have flowed down the prize ball bowl 52 cannot flow into the upper plate guide member 54. Then, it is guided to the lower tray by the lower tray guide bar 56 and discharged.
[0021]
Further, the ball ball 52 is connected to a ball ball 62 that is cut off by a switching lever 60 (see FIG. 1). The downstream end of the ball removal basket 62 is opened as a ball discharge port 64, and the game ball can be discharged out of the machine (for example, a ball collection basket on the gaming machine installation island). Note that the switching lever 60 is normally at the position shown in the drawing, and a game ball does not flow from the prize ball bowl 52 into the ball removal bowl 62.
[0022]
The back frame 12 is provided with a selector attaching / detaching port 66 penetrating from the front surface side to the back surface side, adjacent to the ball punch 62.
A portion of the front side of the back frame 12 that extends from the vicinity of the prize ball bowl entrance 50 to the right side of the lower dish outlet 58 is covered with a subframe 65 shown in FIG. Since the ball cage 52, the lower dish guide cage 56, the ball removal cage 62, etc. are covered (see FIG. 3 for the prize ball cage 52), the game balls passing through them will not leak.
[0023]
As shown in FIG. 1, the sub-frame 65 is a substantially L-shaped plate as a whole, and is provided with an upper plate guide port 67, a discharge introduction port 69, a selector cutout 71, and the like. It is engaged and attached to the back frame 12 by the engaging claw. When mounted on the back frame 12, as shown in FIG. 2, the upper plate guide port 67 is positioned to face the upper plate guide member 54, and the discharge introduction port 69 is the downstream end of the ball punch 62. The selector notch 71 is aligned with the selector attaching / detaching port 66.
[0024]
As shown in FIGS. 1 and 2, a steel back frame hinge 68 is attached to the left side of the back frame 12. Hinge shafts 70 and 72 are fixed to the upper and lower ends of the back frame hinge 68, respectively, and the back mechanism board 10 is swingably attached to the main body side of the ball game machine through the hinge shafts 70 and 72. It is done.
[0025]
A cover support shaft 74 is provided below the back frame hinge 68. A shaft holding portion 78 of the frame cover 76 shown in FIG. 1 is fitted on the cover support shaft 74, and the frame cover 76 can swing around the cover support shaft 74. The position is in contact with the frame 65).
[0026]
A winning ball collecting passage 86 is formed on the back side of the frame cover 76 by the inclined plates 80 and 82 and the alignment plate 84. An evidence ball detection sensor 88, a selector lever 90, and a selector solenoid 92 are installed at the downstream end of the winning ball collecting passage 86, and the gaming ball flowing down the winning ball collecting passage 86 is detected by the evidence ball detecting sensor 88. By reciprocating the selector lever 90 by the selector solenoid 92, it is possible to pass one ball at a time. The game balls introduced and discharged from the winning ball collecting passage 86 by the reciprocating movement of the selector lever 90 fall on the evidence ball discharge plate 94 arranged below, pass through the discharge introduction port 69 from the concave portion 96, and the balls It flows into the extraction rod 62 and is discharged out of the machine from the ball discharge port 64 (see FIG. 2).
[0027]
The positions where the evidence sphere detection sensor 88, the selector lever 90, and the selector solenoid 92 are installed are the subframe 65 when the frame cover 76 is closed (when the frame cover 76 is brought into contact with the back frame 12 (subframe 65)). When the frame cover 76 is closed, a part of the selector lever 90 and the selector solenoid 92 enter the selector attaching / detaching port 66. Yes.
[0028]
In addition, an out ball discharge plate 98 is provided in the recess 96 on the side opposite to the evidence ball discharge plate 94, and an out ball introduction port 100 is provided above the out ball discharge plate 98 and below the inclined plate 80. The out ball introduction port 100 is connected to the back of the out hole of the game board, and the game ball (out ball) passing through the out hole flows in. The out sphere falls from the out sphere introduction port 100 onto the out sphere discharge plate 98, passes through the discharge introduction port 69 through the recess 96, flows into the ball extraction rod 62, and is discharged out of the machine from the sphere discharge port 64 ( (See FIG. 2).
[0029]
Further, an upper plate guide rod 102 is opened between the inclined plate 82 and the alignment plate 84. The upper plate guide rod 102 is in a position aligned with the upper plate guide port 67, and the game balls discharged from the payout device 48 and flowing down the prize ball plate 52 and flowing into the upper plate guide member 54 are placed on the upper plate guide port 67. It passes through the upper plate guide rod 102 through the upper plate guide rod 102 and is discharged toward the upper tray.
[0030]
Returning to the description of the back frame 12 here. An upper end portion of the prize ball basket 52 protrudes on the back side of the back frame 12, and a groove-like neck portion 104 is formed adjacent to the protruding portion. A groove-shaped vertical guiding portion 106 is formed in a portion between the edge of the window 14 and the side edge of the back frame 12, that is, a portion on the back side of the prize ball bowl 52 (see FIG. 3). ing. Clamps 108 and 110 are arranged at the center of the vertical guiding portion 106 and the narrow portion at the lower end. A CR board 114 for transmitting / receiving a signal to / from a card reader device (CR) is attached to the CR board housing part 112 connected to the vertical guiding part 106 through the narrow part. Further, a switching solenoid 116 is installed above the CR board housing portion 112, and the switching lever 60 can be driven by the switching solenoid 116 to change the position. Two pin holders 118 and 120 are erected on the CR board housing portion 112, and a full switch switch housing portion 122 and a lateral guide portion 124 are provided on the left side thereof.
[0031]
The full tank switch accommodating portion 122 has a switch lever 126 that swings and displaces due to the ball pressure of the game ball in the lower tray guide rod 56 (not shown in FIG. 1, see FIG. 2), and is turned on by the switch lever 126. A full switch 128 that is turned off is provided, and it is possible to detect whether or not the lower tray guide rod 56, that is, the lower tray (not shown) is filled with game balls.
[0032]
A clamp 130 is disposed at the center of the lateral guiding portion 124 located above the full tank switch accommodating portion 122. The groove-shaped lateral guiding portion 124 is connected to the CR substrate housing portion 112 on one side and is connected to the relay substrate housing portion 132 on the other side. The relay board storage portion 132 is box-shaped with an opening on the back side, and stores the relay board 136. Further, a pin receiving hole 134 corresponding to the pin through hole 138 of the frame cover 76 is provided on the front side, and a lock pin 140 that is closed and passed through the pin through hole 138 is closed by the pin receiving hole 134. The frame cover 76 can be held in a closed state by being fitted to each other, and the frame cover 76 can be opened and closed by releasing the fitting of the lock pin 140.
[0033]
Further, a board case 145 that houses the harness cover 142 and the control device (main board) 144 is attached to the back side of the back frame 12. Next, these will be described.
The harness cover 142 covers the vertical guiding portion 106, the selector attaching / detaching port 66, the CR board housing portion 112, the switching solenoid 116, and the like, and has a substantially L shape. Shaft pins 143 and 146 are provided on the side edges of the harness cover 142, and these shaft pins 143 and 146 are attached to the back frame 12 by inserting them into the bearings 148 and 150 of the back frame 12. It can be opened and closed with 146 as an axis. In addition, pin through holes 152 and 154 are provided at the edge opposite to the shaft pin 146, and the lock pin 156 that is closed through the harness cover 142 and penetrated through the pin through hole 154 is fitted to the pin receiver 120. By doing so, the harness cover 142 can be held closed, and the harness cover 142 can be opened and closed by releasing the engagement of the lock pin 156. When the harness cover 142 is closed, for example, a bowl-shaped space is formed between the back frame 12 and the harness cover 142 as shown in FIG.
[0034]
The board case 145 includes a board case 158 and a board cover 160, which are joined to each other in a state in which the control device 144 is accommodated and attached to the back frame 12. Specifically, the bearings 162 and 164 provided on the board case 158 are externally fitted to the shaft pins 166 and 168 of the back frame 12 so as to be attached to the back frame 12 so as to be opened and closed. The ear 170 of the board case 158 is provided with a pin through hole 172 corresponding to the pin through hole 152 of the harness cover 142 and the pin receiver 118 of the back frame 12, and the board case is closed after the harness cover 142 is closed. If the lock pin 174 passed through the pin through hole 172 and the pin through hole 152 is fitted into the pin receiver 118, the board case 145 can be held in a closed state, and the lock pin 174 is fitted. Is released, the substrate case 145 can be opened and closed with respect to the back frame 12. The control device 144 controls the operation of a variable winning device attached to the game board, and the structure and function thereof are well known, and the description thereof is omitted.
[0035]
In this back mechanism board 10, all the inputs and outputs of the control device 144 are relayed by the relay board 136. Therefore, the relay board 136 includes an electric wire connected to the external relay board 42, an electric wire connected to the CR board 114, an electric wire connected to the dispensing device 48, the tank switch 24, the switching solenoid 116, the full tank switch 128, evidence. All of the wires connected to the switches and solenoids such as the ball detection sensor 88 and the selector solenoid 92 are concentrated. These wires are drawn out from each (from the evidence ball detection sensor 88 and the selector solenoid 92 through the selector attaching / detaching port 66), the external relay board mounting portion 40, the bypass portion 46, the neck portion 104, and the vertical guiding portion 106. , Through a series of groove-shaped wiring passages 190 formed by the CR board housing part 112 and the lateral guiding part 124, and connected to the relay board 136. The electric wire passing through the bypass unit 46 is passed between the dispensing device 48 and the bypass unit 46.
[0036]
These electric wires are held by the clamps 108, 110, and 130 in the wiring passage 190, and are prevented from becoming messy or detached to the back side by closing the harness cover 142 and the substrate case 145.
Further, as described above, in the back mechanism panel 10, the external relay board 42, the dispensing device 48, the CR board 114, the relay board 136, the tank switch 24, the switching solenoid 116, and the full tank switch 128 are provided on the rear surface of the back frame 12. Some of them can be directly detached, and others can be detached from the back side by swinging and opening the substrate case 145 and the harness cover 142 or removing them. The evidence ball detection sensor 88, the selector lever 90, and the selector solenoid 92 attached to the frame cover 76 are at positions corresponding to the selector cutout 71 of the subframe 65 and the selector attachment / detachment opening 66 of the back frame 12. If the harness cover 142 is opened or removed, it can be attached / detached through the selector attaching / detaching port 66. Of course, the evidence cover detection sensor 88, the selector lever 90, and the selector solenoid 92 may be attached and detached by opening or removing the frame cover 76.
[0037]
In this way, all the electric wires are concentrated in the wiring passage 190, and all electric components (board, switch, solenoid, etc.) to which the electric wires and the electric wires are connected can be attached and detached from the back side. Also, the attaching / detaching operation is very simple. That is, the wiring work itself of the internal wiring is simplified, and the removal work of the internal wiring is simplified. Therefore, when the back mechanism panel 10 is discarded, it is easy to separate the electric wire containing vinyl chloride from other plastics, which is very suitable for discarding the back mechanism panel 10.
[0038]
Further, since the relay board 136 is arranged in the relay board storage part 132, there is an effect of reducing the depth of the back mechanism board 10, that is, the depth of the ball game machine.
In addition, a substrate case 145 that accommodates the control device 144 is disposed on the rear side of the relay substrate storage portion 132 so as to be openable and closable, and also serves as a cover for the wiring passage 190. Since the harness cover 142 that can be freely opened and closed is provided, it is possible to prevent the entry of dust and other obstacles due to dust, etc., and part of the cover of the wiring passage 190 is also used as the board case 145. Can be reduced.
[0039]
Moreover, since the substrate case 145 and the harness cover 142 are openable and closable with respect to the back frame 12, they are normally closed. For example, when the internal wiring is removed during maintenance or inspection of the internal wiring or disposal. You can open these and work. Therefore, the substrate case 145 and the harness cover 142 do not hinder the work related to the internal wiring.
[0040]
As mentioned above, although embodiment of this invention was described according to the specific example, this invention is not limited to such a specific example, and it cannot be overemphasized that it can implement variously in the range which does not deviate from the summary of this invention.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a back mechanism board of a specific example.
FIG. 2 is a front view of a back frame of a back mechanism board of a specific example.
FIG. 3 is an end view taken along line AA in FIG. 2;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Back mechanism board, 12 ... Back frame (2nd structure layer), 14 ... Window, 16 ... Prize tank, 20 ... Tank lever, 24 ... Tank switch, 30 ... Rail back board, 32 ... Alignment rail, 40 ... External relay board mounting part (wiring layer), 42 ... external relay board (external connection terminal), 44 ... relay board cover, 46 ... bypass part (wiring layer), 48 ... dispensing device, 50 ... prize ball entrance, 52 ... Prize ball bowl (prize ball passage), 54 ... Upper dish guide member, 56 ... Lower dish guide bowl, 58 ... Lower dish discharge port, 60 ... Switching lever (movable part), 62 ... Ball removal bowl, 64 ... Ball discharge slot , 65 ... Subframe, 66 ... Selector attachment / detachment opening (attachment / detachment opening), 67 ... Upper plate guide opening, 68 ... Back frame hinge, 69 ... Discharge introduction opening, 71 ... Notch for selector, 76 ... Frame cover (first structure layer) ), 80 ... inclined plate, 82 ... inclined plate, 84 ... alignment plate, 86 Winning ball collecting passage, 88 ... Evidence ball detection sensor, 90 ... Selector lever (movable part), 92 ... Selector solenoid, 94 ... Evidence ball discharge plate, 96 ... Recess (out ball discharge path), 98 ... Out ball discharge plate ( Out ball discharge path), 100 ... Out ball introduction port (out ball discharge path), 102 ... Upper plate guide rod, 104 ... Neck part (wiring layer), 106 ... Vertical guide part (wiring layer), 108 ... Clamp, 112 ... CR board housing part (wiring layer), 114 ... CR board, 116 ... switching solenoid, 118 ... pin holder, 120 ... pin holder, 122 ... full switch housing part, 124 ... lateral guiding part (wiring layer), 126 ... Switch lever, 128 ... Full switch, 130 ... Clamp, 132 ... Relay board storage part (board storage part), 136 ... Relay board, 142 ... Harness cover, 144 ... Control device, 145 ... Plate case, 158 ... board case 160 ... board cover, 190 ... wire channel (wiring layer).

Claims (4)

A frame having a window facing the back of the game board, and below the window, a game ball that has flowed into the winning ball collecting passage for collecting the game balls won in the winning hole of the game board and the out hole of the game board An out-ball discharge path for discharging a ball, and a prize ball passage for guiding a game ball paid out by a pay-out device from one side to a lower side of the window, and the outside of the pay-out device and the ball game machine Between the external connection terminal for connecting the external electric wire, the control device for controlling the operation of the variable winning device attached to the game board, and the internal electric wire connected to each part of the ball game machine and the control device In the back mechanism board that holds the intervening relay board and is attached to the back of the game board,
The part that forms the winning ball collecting passage and the out ball discharge passage is a first structural layer,
Providing the prize ball passage as a second structure layer in contact with the back of the first structure layer;
The relay substrate is disposed in the substrate storage portion as a substrate storage portion where the second structural layer is not provided behind the first structural layer,
A back mechanism board characterized in that a series of spaces extending from the back of the second structural layer to the substrate housing portion is formed into a groove shape to serve as a wiring layer for housing the internal electric wires. The back mechanism panel according to claim 1,
A substrate case for accommodating the control device is arranged to be openable and closable behind the substrate accommodating portion so that it also serves as a cover for the wiring layer, and is openable and closable as a cover for a portion of the wiring layer not covered by the substrate case. A back mechanism panel characterized by providing a wiring cover. The back mechanism board according to claim 1 or 2,
Sensors for detecting a game ball in the first structure layer or the second structure layer, and a solenoid for driving a movable part arranged in the first structure layer or the second structure layer are all the wiring layer. A back mechanism panel characterized in that it can be attached and detached from an attachment / detachment opening that opens to the wiring layer side. In the back mechanism board in any one of Claims 1 thru | or 3,
A back mechanism panel, wherein the first structure layer is openable and closable with respect to the second structure layer side.

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