JPH11128496A - Base mounting structure for ball shooting game machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a trouble caused by the fixation of a circuit board. SOLUTION: In a shooting device 60, a motor base box 68 can be freely rotated when the rotating shaft 78 of the motor base box 68 is situated within the bearing part 90 of a holding arm 84. When the motor base box 68 is rotated about 90 deg. until a lid part 78 touches a connector holding part 88, a connector 80 is connected to a connector 94, whereby the motor base box 68 is constrained. When the connection between the connector 80 and the connector 94 is released, the motor base box 68 can be rotated. Thus, since the mounting angle of the motor base box 68 an be changed, various troubles caused when the mounting angle of the motor base box 68 is fixed can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the technical field of a ball game machine represented by a pachinko machine and an arrangement ball type pachinko machine, and more particularly to a board mounting structure for mounting a circuit board to a ball game machine. .

[0002]

2. Description of the Related Art In a ball and ball game machine represented by a pachinko machine and an arrangement ball type pachinko machine, for example, a game control board (main board) for controlling the operation of a variable winning device mounted on a game board, and a bullet An external relay board for relaying wiring between the ball game machine and the outside (such as a hall computer), a launch control board for controlling the operation of the motor of the launch device,
Various circuit boards are mounted.

Conventionally, these substrates have been attached to holding members fixed to the main body side of a ball-and-ball game machine using bolts or the like.

[0004]

However, since these circuit boards are fixed as described above, they sometimes hinder the attachment and detachment of other parts, and sometimes restrict the arrangement of other parts. Was. An object of the present invention is to prevent such a disadvantage.

[0005]

According to a first aspect of the present invention, there is provided a board mounting structure for a ball game machine, comprising: a holding member fixed to a main body of the ball game machine; In a board mounting structure of a ball game machine having a circuit board and a board box mounted on the main body side of the ball game machine via the holding member, a pivot shaft is attached to one of the holding member and the board box. The other side is provided with a bearing for rotatably inserting the rotating shaft, so that the substrate box can be rotated about the rotating shaft, and further, when the restraining operation is performed, the substrate box is restrained. Then, when the release operation is performed, the restraint is released to allow the rotation of the board box by releasing the restraint.Therefore, the mounting angle of the board box, that is, the circuit board, can be set to an angle that does not hinder the attachment or detachment of other components. Other parts It can be changed to an angle that does not limit the arrangement of the. Therefore, various inconveniences that occur when the mounting angle of the board box is fixed can be prevented.

The holding member may be fixed to, for example, various frame members of a ball-and-ball game machine, the back surface of a game board, or the like, or may be fixed to a member fixed to a frame member or the like, such as a base plate of a launching device. May be done. The board box houses the circuit board, but a part of the circuit board, for example, the connector and its peripheral portion may be exposed.

The rotating shaft and the bearing for rotatably passing the rotating shaft are provided, for example, by forming a recessed portion in the holding member to be used as a bearing, and providing a convex portion in the substrate box to be used as the rotating shaft. Thus, one is provided on the holding member and the other is provided on the substrate box. The structure of the restraining means is not particularly limited as long as it can be switched between a state in which the board box is not rotated (restricted) and a state in which the board box is allowed to rotate. As an example of the restraining means, a configuration in which a pin penetrating both the holding member and the board box is inserted and restrained, and the pin is pulled out and released, a dent is provided in one of the holding member and the board box, and a projection is provided in the other, and the two are engaged with each other. A configuration in which the restraint is released by restraining and releasing the engagement, and a configuration in which the restraint is released by restraining and releasing the restraint by the elastic locking claw, and the like.

The direction of the center of the rotation shaft is not particularly limited,
As described in claim 2, the core of the rotating shaft is substantially parallel to the game board surface, and the restraining means is capable of restraining the board box at a parallel position where the circuit board is substantially parallel to the game board surface. By doing so, when the board box is restrained, the depth of the ball game machine is not increased. It should be noted that the term “substantially parallel” used herein means not parallel in a mathematical sense,
This means that it is practically acceptable to treat them as parallel.

According to a third aspect of the present invention, the restraining means includes an orthogonal position where the extension surface of the circuit board is substantially orthogonal to the game board surface or an extension surface of the game board surface, the parallel position, and a parallel position to the orthogonal position. If the board box can be restrained at an intermediate position between the positions, the board box (circuit board) can be attached at an appropriate angle in accordance with, for example, the type of a ball game machine, the arrangement of other components, and the like. The effect of the configuration according to claim 1 can be further improved. The intermediate position may be one, but it is more preferable that the intermediate position is a structure that can be changed in multiple steps or continuously. Further, “substantially orthogonal” means, to the extent that it can be treated as orthogonal in practical use, similarly to the above “substantially parallel”.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention and modified examples will be described with reference to the drawings to specifically describe the embodiments of the present invention.

[0011]

Embodiment 1 As shown in FIG. 1, a pachinko machine 10 as a ball-and-ball game machine has a rectangular outer frame 12 and a hinge 14.
Front frame 16 movably attached to outer frame 12
Is the outer shell.

A glass frame 18 for holding a glass plate 17 and a dish door 22 for holding an upper tray 20 are attached to the front frame 16 so as to be openable and closable. A game board 24 is disposed inside the pachinko machine 10 covered by the glass plate 17, and a guide rail 26 attached to the game board 24 is provided.
A substantially circular area surrounded by is defined as a game area 28, in which a well-known winning device, obstacle nails, windmills, etc. (all not shown) are installed. In addition, below the tray door 22, the lower tray member 34 in which the lower tray 30 and the ashtray 32 are integrated and the firing for operating the firing device 60 (not shown in FIG. 1, see FIGS. 2 and 3). Handle 36
Are attached to the front frame 16.

As shown in FIG. 2, a mechanism panel 40 is mounted on the rear side of the front frame 16. The mechanism panel 40 is provided with a mechanism for paying out prize balls, such as a prize ball tank 42, an alignment gutter 44, and a payout device 46. An external relay to which a power line from an external power supply, a data line with a hall computer, and the like are connected. An external board box 50 accommodating the board 48 is attached. A firing device 60 is attached to a lower corner on the rear side of the front frame 16.

Further, the game board 2 held by the front frame 16
4, a symbol display device 25 is attached to the back of the game board 2.
The back of 4 is covered by a ball collecting board 27 except for the symbol display device 25. The ball collecting board 27 functions as a gutter for collecting winning balls.
They are gathered by a passage formed between the ball 4 and the ball gathering board 27. The ball collecting board 27 has a main board box 10 containing a game control board 100 for controlling the operation of the variable prize device mounted on the game board 24.
2 are installed.

As shown in FIG. 2 and FIG.
Reference numeral 0 denotes a base plate 62 that supports each part of the launching device 60, a motor 64 fixed to the base plate 62, and a motor 6
A ball punch 66 driven backward by the motor 4 and driven forward by a spring (not shown), and a motor board box 68 containing a motor control board (not shown) for controlling the motor 64.
Etc. are provided. As shown in FIG. 3, a plurality of bolt holes 70 are provided in the base plate 62. As shown in FIG.
To the front frame 16.

As shown in FIG. 3, the motor board box 6
8 includes a plastic box portion 74 and a lid portion 76, and the upper and lower surfaces of the box portion 74 are provided with an oval-shaped rotating shaft 78.
(Only one is shown), and a connector 80 of the motor control board is exposed on the lid 76.

A holding member 82 for holding the motor board box 68 includes a pair of holding arms 8 facing each other.
4, a connecting plate 86 disposed between the holding arms 84, a connector holding portion 88 extending laterally from the connecting plate 86, and a connecting member (not shown) fixed to the base plate 62;
6 is fixed. The holding arm 84 is provided with a bearing portion 90 having a diameter matching the major axis of the rotating shaft 78, and a groove 92 having a width matching the minor axis of the rotating shaft 78 is provided from the bearing portion 90 to the tip. Further, a connector 94 that is paired with the connector 80 is attached to a distal end portion of the connector holding portion 88, and a flat cable 96 is connected to the connector 94. The flat cable 96 includes an electric wire from a power supply, an electric wire from the firing handle 36, an electric wire toward the motor 64, and the like.
4 is connected, the motor control board
Operation can be controlled.

In the firing device 60, when the rotating shaft 78 of the motor board box 68 is fitted into the groove 92 of the holding arm 84 and is pushed in until the end surface of the motor board box 68 contacts the connecting plate 86, the rotating shaft 78 is rotated. But just the bearing part 90
Inside. If the rotation shaft 78 is inside the bearing portion 90, the motor board box 68 can be freely rotated around the rotation shaft 78. When the motor board box 68 is rotated by approximately 90 degrees until the lid 76 contacts the connector holding section 88, the connector 80 and the connector 94 are connected, and the motor board box 68 is restrained by the connection.
When the connection between the connector 80 and the connector 94 is released, the motor board box 68 can be rotated. Then, by pulling the motor board box 68 after the rotation shaft 78 is set at a position corresponding to the groove 92, the motor board box 68 can be removed from the holding member 82 (from the firing device 60). As is apparent from these, the connector 80 and the connector 94 function together as a restraining means.

As described above, since the mounting angle of the motor board box 68 can be changed, various inconveniences caused when the mounting angle of the motor board box 68 is fixed can be prevented. Next, the mounting structure of the main board box 102 will be described with reference to FIG.

As shown in FIG. 4, the main board box 1
02 is a pair of support arms 1
06 and a support substrate 108 disposed between the support arms 106. The support arm 106 is provided with a circular bearing 110, and a groove 112 extends from the bearing 110 to the tip.
Is provided. On the other hand, the main board box 102 is provided with an oval-shaped rotating shaft (not shown) having a major axis matching the inner diameter of the bearing 110 and a minor axis matching the width of the groove 112. Similarly to the case of the box 68, when the rotating shaft of the main board box 102 is inserted into the groove 112 of the support arm 106 and pushed in, the rotating shaft is
10, the main board box 102 can be freely rotated about the rotation axis. Also, the rotation axis is the groove 11
2 and then the main board box 102
Is pulled, the main board box 102 is
Can be removed from

A protrusion 114 is provided on the edge of the support substrate 108, and a locking pin 116 is attached adjacent to the protrusion 114. On the other hand, the main board box 102 is provided with a shaft pin 118 protruding from the side surface.
A locking member 126 having a hook-shaped locking claw 120 and an operating portion 122 and a fulcrum portion 124 arranged in directions substantially opposite to each other is rotatably attached to the hook. Further, a connector 12 is provided at the tip of the support substrate 108.
8 is attached, and a connector 130 is attached to the back surface of the game control board 100. Note that the bottom surface of the main board box 102 is opened only at a part where the locking claw 120 and the connector 130 are arranged, and the other part is closed.

With such a structure, the main board box 102 is turned by inserting the rotating shaft of the main board box 102 into the bearing portion 110 and
When the bottom surface of the game control board 100 (that is, the game control board 100) is in a position parallel to the game board 24, the connector 128 and the connector 130 are connected to connect the game control board 100 to each part of the pachinko machine 10. At this time, the locking claw 12
0 can be locked to the locking pin 116 and the fulcrum 12
4 is in contact with the protrusion 114. The locking of the locking claw 120 and the locking pin 116 causes the main board box 102
Is restricted and cannot rotate. However, if a force is applied to the operation unit 122 and the operation unit 122 is rotated clockwise in FIG. 4, the locking between the locking claw 120 and the locking pin 116 is released.
The main board box 102 becomes rotatable. In releasing the lock, since the fulcrum portion 124 is in contact with the convex portion 114, the restraining member 126 acts as a lever, so that the lock can be released with a slight force.

Since such a mounting structure is adopted,
When the main board box 102 is mounted, the main board box 102 is pushed in along a direction perpendicular to the game board 24 and turned downward by about 90 degrees to engage the locking claws 120 with the locking pins 116. The main board box 102 can be removed simply by rotating the main board box 102 upward by about 90 degrees and pulling it out after releasing the locking. Therefore, attachment and detachment of the main board box 102 is extremely easy. In the mounting structure of the main board box 102, a restraining means is constituted by the locking pin 116 and the restraining member 126.

Although not described in detail, the external board box 50 is also rotatably and detachably held by a support arm 135 similar to the support arm 106, and the connector 1
It is a structure that is restricted and attached by the connection of 37. As described above, in the pachinko machine 10 of the first embodiment, the motor board box 68 and the main board box 10
Since the mounting angles of the second and external board boxes 50 can be changed, various inconveniences caused when these mounting angles are fixed can be prevented.

Further, since the motor board box 68, the main board box 102, and the external board box 50 are not mounted using bolts or screws, the mounting and removal of these are extremely simple. For this reason, the number of assembling steps of the pachinko machine 10 can be reduced. Moreover, since these substrates can be easily removed when the pachinko machine 10 is discarded, the substrate can be easily reused or separated at the time of disposal, which is extremely useful from the viewpoint of recycling.

[0026]

Second Embodiment Next, an example in which the mounting angle of the motor board box can be changed in multiple steps by adopting a structure different from that of the first embodiment will be described. Except for the mounting structure of the motor board box, the configuration is the same as that of the first embodiment, so that illustration and description are omitted.

As shown in FIG. 5, the motor board box 200 of this embodiment has a plastic box portion 202.
And a lid 204, in which a motor control board 206 on which an IC or the like is mounted is accommodated. As shown in FIG. 6, a hole 210 for inserting a volume knob 208 and connectors 212a, 212b,
A notch 214 for exposing 212c is provided. As shown in FIG. 5, an oval elongated hole 216 serving as a bearing and an engagement protrusion 217 serving as a part of a restraining means are provided on upper and lower surfaces of the box 202 (the upper part is shown in the figure). The same long hole 216 and engagement projection 217 are provided at the position which becomes a mirror image only on the surface but also on the lower surface). On the other hand, as shown in FIG.
8 are erected.

As shown in FIG. 5, a plastic holding member 2 for holding the motor board box 200 is provided.
20 is a pair of holding arms 222 and holding arms 2 facing each other.
The connecting plate 224 includes a stopper 226 extending in the lateral direction from the connecting plate 224. The connection plate 224 has a hole 22 through which a fixture (not shown) is inserted.
A locking member 230 corresponding to the locking projection 8 and the locking projection 218 is provided, and is attached to the main body side of the launching device via a fixture similarly to the holding member of the first embodiment.

As shown in FIG. 5 and FIG.
2 has a rotating shaft 23 having a diameter matching the minor diameter of the long hole 216.
2 are erected. In addition, along an arc centered on the rotation shaft 232, the engagement holes 234a, 234 having the same diameter as each other.
b, 234c, 234d, and 234e are provided.
A communication groove 236 is provided continuously with the engagement hole 234a, and an engagement hole 238 having the same diameter as the engagement hole 234a is connected to the other end of the communication groove 236. These engagement holes 234a, 2
34b, 234c, 234d, 234e, and 238 function as restraining means in cooperation with the engaging projections 217, and their functions will be described later.

Further, the engagement holes 234b, 234c, 23
4d and 234e are radial grooves 240b and 24 respectively extending to the outer edge of the holding arm 222 along a radial line centered on one point on the rotating shaft 232 (not the rotating shaft 232).
0c, 240d, and 240e are continuous. Although not shown, the upper holding arm 222 has these pivot shafts 232, engagement holes 234a, 234b, 234c,
Structures similar to 234d and 234e, the communication groove 236, the engagement hole 238, and the radiation grooves 240b, 240c, 240d, and 240e are provided at mirror image positions.

The motor board box 200 is held by a holding arm 222 of a holding member 220 as shown in FIGS. In FIGS. 7 and 8, the mounting angle of the motor board box 200 is changed by 90 degrees, but in the present embodiment, a further intermediate angle can be used. Next, the change of the angle will be described with reference to FIGS.

First, the state shown in FIG. 9 corresponds to FIG. 7, and at this time, the rotating shaft 232 is
9A, the engagement protrusion 217 is engaged with the engagement hole 238 at the upper end side. The engagement hole 238 and the engagement protrusion 2
17 and the motor board box 200 is connected to the connecting plate 224.
, The motor board box 200 is prevented from rotating and is in a restrained state.

From the state shown in FIG. 9, the direction in which the motor board box 200 is separated from the connecting plate 224 (FIG. 9).
When it is pulled upward in (a), the engagement protrusion 217 is disengaged from the engagement hole 238 and moves along the communication groove 236, and
34a. Further, the elongated hole 216 relatively moves, and the rotating shaft 232 is located on the lower end side of the elongated hole 216 in FIG. That is, the state shown in FIG. 10 is obtained.

In the state shown in FIG. 10, when a force for rotating the motor board box 200 in the clockwise direction is applied, the holding arm 222 is elastically deformed, and the engagement between the engagement protrusion 217 and the engagement hole 234a is made. Since the combination is released, the motor board box 200 can be rotated clockwise.
Then, for example, as shown in FIG.
When the force exerted on the motor board box 200 is released when the engaging hole 7 is engaged with the engaging hole 234c, the engaging hole 23 is released.
By the engagement between the engagement protrusion 4c and the engagement protrusion 217, the rotation of the motor board box 200 is prevented and the state can be restricted. Similarly, the rotation position of the motor board box 200 can be set to the rotation position shown in FIGS. In addition,
When the motor board box 200 is at the position shown in FIG. 13, the locking projections 218 abut on the locking members 230 (the projections and recesses are fitted to each other), and further rotation of the motor board box 200 is prevented. I do.

Further, as shown in FIGS. 11 to 13, for example, the engagement projections 217 are provided with engagement holes 234b, 234c,
When the motor board box 200 is pressed in the long diameter direction of the elongated hole 216 while engaging with any one of 34d and 234e, the engaging projection 217 is pressed into the radial grooves 240b, 240c and 24.
0d and 240e to move the holding arm 22
2 outside. Then, since there is no obstacle to the rotation of the motor board box 200, the motor board box 200 can be easily turned. Then, the engaging protrusion 217 is connected to the radiation groove 240b,
If the motor board box 200 is pulled in the long diameter direction of the elongated hole 216 after being aligned with any one of 240c, 240d, and 240e, the engagement protrusion 217 is formed in the radiation grooves 240b, 240e.
c, 240d, and 240e, and any one of the engagement holes 234 connected to the radiation groove.
b, 234c, 234d, and 234e, so that the rotation of the motor board box 200 can be prevented again to be in a restrained state.

As described above, since the rotating position of the motor board box 200 can be changed in a plurality of steps within a range of about 90 degrees, for example, according to the model of the ball game machine, the arrangement of other parts, and the like. Motor board box 200 at an appropriate angle
Of the motor board box 20 can be changed.
The degree of freedom is dramatically increased not only in the arrangement of 0 but also in the arrangement of other parts.

Also, in the second embodiment, similarly to the first embodiment, no bolts or screws are used for mounting the motor board box 200, and the mounting and dismounting are extremely simple. For this reason, the assembly man-hour of the pachinko machine can be reduced. In addition, since the motor board box 200 can be easily removed when the pachinko machine is discarded, the work of reusing and discarding the board is easy, and this can be said to be extremely useful from the viewpoint of recycling.

[0038]

[Modification] In the structure of the second embodiment, FIG.
Also, a configuration as shown in FIG. 15 can be adopted. That is, the opening 300 is provided on the side surface of the motor board box 200a, and the connector 302 mounted on the motor control board 206a faces the opening 300. A connector 304 that is paired with the connector 302 is arranged outside the motor board box 200a. With this configuration, the motor board box 200a is
The connector 302 and the connector 304 can be connected as shown in FIG. 15 by moving the slot 216 along the major axis direction as the rotation position shown in FIG. Therefore, for example, it is not necessary to connect a flat cable or the like to the connector 302, so that it is possible to prevent noise from entering from the flat cable or the like. Further, since a flat cable or the like is not required, a wiring error can be prevented, and the cost can be reduced.

In the second embodiment and the modification, the engagement protrusion 217, the engagement holes 234a, 234b, 234c,
234d and 234e and the engagement hole 238 function as a restraining means, and in the case of a modification, the connector 302 and the connector 304 also serve as the restraining means.

Although the embodiments of the present invention have been described with reference to the examples and the modified examples, the present invention is not limited to these examples, and various modifications can be made without departing from the gist of the present invention. Needless to say.

[Brief description of the drawings]

FIG. 1 is a front view of a pachinko machine according to a first embodiment.

FIG. 2 is a rear view of the pachinko machine according to the first embodiment.

3A and 3B are explanatory views of a launching device of the pachinko machine according to the first embodiment. FIG. 3A is a perspective view of the launching device, FIG. 3B is a perspective view of a motor board box, and FIG. It is a perspective view of a holding member.

4A and 4B are explanatory views of attachment and detachment of a main board box of the pachinko machine according to the first embodiment. FIG. 4A is a side view in the middle of attachment (or removal), and FIG. 4B is a side view of the attached state. It is.

FIG. 5 is an exploded perspective view of a motor board box according to the second embodiment.

FIG. 6 is a front view of a motor board box according to a second embodiment.

FIG. 7 is a perspective view of a state where the motor board box of the second embodiment is held by a holding member.

FIG. 8 is a perspective view of a state in which the motor board box according to the second embodiment is held by a holding member and rotated by 90 degrees.

FIG. 9 is an explanatory diagram of a positional relationship between a rotation shaft and a long hole and an engagement relationship between an engagement hole and an engagement protrusion in a state where the motor board box of the second embodiment is non-rotatably restrained. FIG. 9A is an explanatory view in a plane direction, and FIG. 9B is a sectional view.

10 is an explanatory diagram of a positional relationship between the rotating shaft and the elongated hole and an engagement relationship between the engagement hole and the engagement protrusion when the motor board box is pulled out from the state of FIG. 9; FIG. Is an explanatory view in a plane direction, and FIG. 10B is a sectional view.

11 is an explanatory diagram of a positional relationship between a rotation shaft and a long hole and an engagement relationship between an engagement hole and an engagement protrusion when the motor board box is rotated from the state of FIG. 10;

FIG. 12 is an explanatory diagram of a positional relationship between a rotating shaft and a long hole and an engaging relationship between an engaging hole and an engaging protrusion when the motor board box is rotated from the state of FIG. 11;

FIG. 13 is an explanatory diagram of a positional relationship between a rotation shaft and a long hole and an engagement relationship between an engagement hole and an engagement projection when the motor board box is rotated to the maximum.

FIG. 14 is an explanatory view in a plane direction in a state in which a connection of a connector is released in a modified example.

FIG. 15 is an explanatory view in a plane direction in a state where connectors are connected in a modified example.

[Explanation of symbols]

10 ... Pachinko machine (ball game machine), 12 ... Outer frame, 16 ...
Front frame, 18: Glass frame, 20: Upper tray, 22: Dish door,
24 game board, 28 game area, 30 lower tray, 36
Firing handle, 40 ... mechanical panel, 48 ... external relay board (circuit board), 50 ... external board box (board box),
Reference numeral 60: launching device, 68: motor substrate box (substrate box), 74: box portion, 76: lid portion, 78: rotating shaft, 80
... connector (restraining means), 82 ... holding member, 84 ... holding arm, 86 ... connecting plate, 88 ... connector holding part, 90 ... bearing part, 92 ... groove, 94 ... connector (restraining means), 100 ...
Game control board (circuit board), 102: main board box (board box), 104: holding member, 106: support arm, 108: support board, 110: bearing, 112: groove,
114 ... convex part, 116 ... locking pin (restraining means), 118
... shaft pin, 120 ... locking claw, 122 ... operation part, 124 ...
Supporting point part, 126 ... Constraining member (restraining means), 128 ... Connector, 130 ... Connector, 135 ... Support arm, 137 ... Connector, 200 ... Motor board box (board box), 202 ... Box part, 204 ... Lid part, 206 ... Motor control board (circuit board), 216 ... Long hole (bearing part), 217
... engagement projections (restraining means), 218 ... locking projections, 220
... holding member, 222 ... holding arm, 224 ... connecting plate, 230
... locking member, 232 ... rotating shaft, 234a to 234d ... engagement hole (restriction means), 236 ... communication groove, 238 ... engagement hole (restriction means), 240b to 240d ... radiation groove, 200a
... motor board box (board box), 206a ... motor control board (circuit board), 302 ... connector (restraining means), 304 ... connector (restraining means).

Claims (3)

[Claims] 1. A ball game having a holding member fixed to a main body side of a ball game machine, and a board box which accommodates a circuit board and is attached to the main body side of the ball game machine via the holding member. In the substrate mounting structure of the machine, one of the holding member and the substrate box is provided with a rotating shaft, and the other is provided with a bearing for rotatably inserting the rotating shaft. Can be pivoted around, and further, when the restraining operation is performed, the board box is restrained,
A board mounting structure for a ball game machine, comprising a restraining means for releasing the restraint when the releasing operation is performed and allowing the board box to rotate. 2. The board mounting structure for a ball game machine according to claim 1, wherein a core of said rotating shaft is substantially parallel to a game board surface, and said restraining means is configured such that said circuit board is substantially parallel to said game board surface. A board mounting structure for a ball game machine, wherein the board box can be restrained at a parallel position. 3. The board mounting structure for a ball game machine according to claim 1, wherein said restraining means includes: an orthogonal position in which an extension surface of said circuit board is substantially orthogonal to an extension surface of said game board surface or the game board surface; The board mounting structure of a ball game machine, wherein the board box can be restrained at the parallel position and at an intermediate position between the orthogonal position and the parallel position.