JP2002273001A - Loading/unloading structure of board housing case for pachinko game machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a loading/unloading structure of board housing cases for pachinko game machines which can prevent fraudulent replacement of a vital main board case housing a main control board, or the like. SOLUTION: In the loading/unloading structure of board housing cases for pachinko game machines, the main board case 30 which houses a main control board for mainly controlling game operations and an auxiliary board case 40 housing an auxiliary control board for the auxiliary control of the game operations are detachably mounted on a holding base plate 10 fixed within the Pachinko game machine. A main board case holding part 11 for holding the main board case 30 and an auxiliary board case holding part 12 for holding the auxiliary board case 40 are arranged on the holding base plate 10. The main board case holding part 11 is provided with a main board case retaining means for retaining the main board case 30 and the auxiliary board case holding part 12 with an auxiliary board case retaining means for retaining the auxiliary board case 40.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a detachable structure of a board storage case for storing a control board of a pachinko gaming machine.
In particular, in a pachinko gaming machine provided with a plurality of board cases including a main board case and an auxiliary board case, it is necessary to take time to remove the main board case containing the main control board. The present invention relates to a structure for attaching and detaching a substrate storage case.

[0002]

2. Description of the Related Art A control board of a pachinko game machine usually includes:
There are a main control board mounted with a game control ROM, RAM, clock oscillator, interface circuit, etc. together with a CPU, a lamp control board mounted with a control circuit for controlling a lamp, and a voice control board mounted with a control circuit for controlling voice. These control boards are housed in a main control board storage case, a lamp control board storage case, and a voice control board storage case, respectively, and are mounted in the main body frame of the pachinko game machine.

Game control ROM mounted on main control board
As is well known, a program for controlling the probability and condition of generating a special game state (big hit), the number of consecutive occurrences, and the like is written in the well-known game state. ) Greatly changes, and a problem arises that a premium ball is illegally paid out.

[0004] For this reason, the main control board of the pachinko gaming machine is usually stored in a board storage case composed of a case-shaped cover body and a mounting base plate, and sealed between the cover body and the mounting base plate when the product is shipped. By sticking the paper, the substrate storage case is prevented from being opened illegally. Each board storage case is mounted on a holding base plate provided in the main body frame.

[0005]

However, in this type of substrate storage case, although the main control substrate is stored in the substrate storage case and the sealing paper is stuck and crimped, it is provided in the main body frame. Removably mounted on the holding base plate for maintenance and inspection, repair, improvement, etc. of the gaming machine
The substrate storage case is detachably attached to the holding base plate. For this reason, the front frame of the gaming machine has been illegally unlocked, and a fraudulent act has occurred in which the main control board is replaced with a fraudulent one for each main board case.

[0006] Such fraudulent acts are such that during the business hours of the pachinko game hall, the front frame is illegally opened, and the main control board in the main body frame is replaced with an unauthorized one together with the main board case. However, it was discovered that the unauthorized exchange took place in a very short period of time, and that the appearance of the main board case containing the incorrect main control board was very similar to the authentic one. When the gaming machine is operated by an unauthorized ROM control program on the main control board, for example, a jackpot occurs with a very high probability, and there has been a problem that a large amount of prize balls are paid out illegally. .

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and is intended to prevent the improper replacement of an important main board case containing a main control board and the like, and to attach and detach a board storage case of a pachinko game machine. The purpose is to provide a structure.

[0008]

In order to achieve the above object, according to the first aspect of the present invention, there is provided a pachinko game machine mounting / detaching structure for a board storage case, which comprises a main control board for mainly controlling a game operation. A detachable mounting structure of a board storage case of a pachinko game machine in which a board case and an auxiliary board case containing an auxiliary control board for controlling a game operation are detachably mounted on a holding base plate fixed in the pachinko game machine. , A main board case holding section for holding the main board case on the holding base plate and an auxiliary board case holding section for holding the auxiliary board case are provided, and the main board case holding section locks the main board case. Main board case locking means is provided, and the auxiliary board case holding section is provided with auxiliary board case locking means for locking the auxiliary board case. By moving the case holding portion to release the engagement, the main circuit board case is characterized in that it is configured to be removable.

Here, the main board case locking means in the board storage case device having the above-mentioned structure is extended to the locking claw, the locking opening and the side plate for locking the main board case in the main board case holding portion. A holding edge portion, and by moving the main board case to the auxiliary board case holding portion side, the holding edge portion is released, and the engagement between the locking claw and the locking opening is released. be able to.

An auxiliary board case holding portion is formed on both sides of the main board case holding portion on the holding base plate, and the auxiliary board case is held adjacent to both sides of the main board case held by the main board case holding portion. Thus, the hook-shaped locking edge provided on the side of the main board case can be engaged with the hook-shaped locking edge provided on the side of the auxiliary board case on one side.

[0011]

In the detachable structure of the board storage case having such a structure, when the main board case is removed from the main board case holding portion of the holding base plate, first, the auxiliary board case locking means is unlocked to release the main board case. It is possible to remove the auxiliary board case from the board case holding portion, and then move the main board case to the auxiliary board case holding portion side to release the locking of the main board case locking means and remove the main board case. State and remove it. Therefore, the main board case containing the main control board cannot be removed unless the auxiliary board case is removed from the holding base plate. It is possible to prevent a fraudulent act of illegally replacing the board case.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a rear view of the pachinko gaming machine. In FIG. 1, a front frame is mounted on the front of a wooden frame 2 via a hinge so as to be openable and closable, and a game board 3 is detachably mounted inside the front frame. Further, on the back side of the game board 3, a mechanism plate 4 made of synthetic resin is rotatably mounted via a hinge.

An opening is formed in the center of the mechanism plate 4, and a protective cover 5 made of synthetic resin is mounted so as to cover the gathering portion of the winning balls located in the opening from the back side. On the back of the protective cover 5, the substrate storage case device 1 according to the present invention is provided.
Is attached. A relay board (not shown) provided with a connector that relays a winning ball detection signal and the like on the rear side of the symbol variation display device, the rear portion of the symbol variation display device protruding rearward next to the substrate storage case device 1. Is attached.

Further, a prize ball tank 6 for storing payout prize balls is provided above the mechanism plate 4, and a tank rail 7 is connected to a lower side of the prize ball tank 6. A substantially S-shaped guide rail is connected to the lower end of the tank rail 7, and a prize ball payout mechanism 8 is disposed below the guide rail. Prize ball payout mechanism 8
Has a built-in rotor that is driven to rotate by a motor, and pays out a controlled number of prize balls in accordance with the rotation of the rotor. A ball detector 8a for magnetically or optically detecting the paid out prize ball is provided at a lower portion thereof.

On the other hand, a winning ball collecting gutter 19 for collecting winning balls is provided below the mechanism plate 4, and a winning ball discharging mechanism is provided downstream of the winning ball collecting gutter 19, and a winning ball for detecting a winning ball is provided. A sphere detector 9 is provided.

The board storage case device 1 attached to the back of the protective cover 5 includes a holding base plate 10 shown in FIG. 2, a main board case 30 shown in FIG. 3, an auxiliary board case 40 shown in FIG. )). As shown in FIG. 2, the holding base plate 10 is provided with a main board case holding portion 11 for holding the main board case 30 at a central portion, and auxiliary board case holding portions 12 and 13 provided on both left and right sides thereof to form a flat plate. It is formed.

The main board case holding portion 11 is formed with a large area so as to hold the large main board case 30, has a locking claw 14 in the center, and has a lower support plate 15 below it.
The side plate 16 is formed horizontally, and a side plate 16 is formed on a side wall portion.
Is formed so as to sandwich it. In addition, locking claws 46, 5 of auxiliary board cases 40, 50 to be described later are provided below the left and right auxiliary board case holding portions 12, 13.
Auxiliary board locking openings 18 and 19 for locking 6 are formed, and lower support plates 20 and 21 are protruded horizontally.

The right side of the auxiliary board case holding section 12, the auxiliary board case holding section 13 and the left side have the auxiliary board case 4
The engaging projections 44, 45, 5 protruding on both sides of 0, 50
Guide portion 22 for slidably guiding 4, 55;
23 is formed on the edge vertically, and the guide portions 22, 23 are provided with engaging projections 24, 25, 2, 2 to prevent disengagement.
6, 27 are provided projecting inward.

As shown in FIG. 3, the main board case 30 is formed in a rectangular box shape by covering a case cover 32 so as to cover a rectangular case plate 31. The case cover 32 can be opened and closed with respect to the case plate 31. At the substantially center of the case plate 31, a main board locking opening 35, into which the locking claw 14 of the main board case holding portion 11 can be locked, is formed as a rectangular hole. The main board locking opening 35 is formed so as to be shifted to the right side from the center position while the position of the locking claw 14 of the main board case holding portion 11 is at the center. When the left side of the main board case 30 is free in the state where the opening 35 is locked, the main board case 30 can be shifted to the left side.

Further, an engagement edge 33 is formed on the left edge of the case plate 31 when viewed from the front, and a hook-shaped engagement edge 34 is formed on the right edge. The left engaging edge 33 engages with the engaging edge of the left auxiliary board case 40 described later, and the right hook-shaped engaging edge 34 engages with the hook-shaped engaging edge of the right auxiliary board case 40 described later. The portion 43 is formed so as to be engageable.

As shown in FIG. 4A, the auxiliary board case 40 is formed in a rectangular box shape by covering a case cover 42 so as to cover a rectangular case plate 41.
Is formed to be openable and closable with respect to the case plate 41, and the case plate 4
A locking claw 46 that can be locked in the locking opening 18 of the auxiliary board case holding portion 12 is provided at a lower portion of the projection 1 so as to protrude downward.
Further, a hook-shaped engagement edge 43 is formed on the left edge of the case plate 41 in front view, and the engagement projections 44, 4
5 are formed. The left hook-shaped engaging edge 43 engages with the right hook-shaped engaging edge 34 of the central main board case 30,
The right engagement protrusions 44 and 45 are formed so as to be able to engage with the engagement protrusions 24 and 25 of the auxiliary board case holding portion 12 of the holding base plate 10.

Similarly, the auxiliary board case 50 is
As shown in (b), the case cover 52 is formed so as to cover the rectangular case plate 51 so as to cover the rectangular case plate 51, and the case cover 52 is formed to be openable and closable with respect to the case plate 51. At the lower part, a locking claw 56 that can be locked to the locking opening 19 of the auxiliary board case holding portion 13 is provided to protrude downward. Further, an engagement edge 53 is formed on the right edge of the case plate 51 in front view, and engagement projections 54 and 55 are formed on the left edge. The right engaging edge 53 is engaged with the left engaging edge 33 of the central main board case 30, and the left engaging projections 54 and 55 are provided on the auxiliary board case holding portion 13 of the holding base plate 10. The engagement protrusions 26 and 27 are formed so as to be engageable.

Although not shown, each main board case 30 and auxiliary board cases 40 and 50 are provided with connector windows for wiring connection.

The holding base plate 10 having the above structure is fixed to the back side of the protective cover 5 in the pachinko game machine. On the holding base plate 10, as shown in FIGS. And the auxiliary board cases 40 and 50 are detachably mounted. The main control board A is mounted on a case plate 31 of the main board case 30, and a case cover 32
And the case cover 32 is fixed with fixing screws or the like. Similarly, a lamp control board B as an auxiliary control board
Is mounted on a case plate 41 of the auxiliary board case 40, a case cover 42 is put on from above, and the case cover 42 is fixed with fixing screws or the like. Further, the voice control board C is mounted on the case plate 51 of the auxiliary board case 50, a case cover 52 is put thereon, and the case cover 52 is fixed with fixing screws or the like.

When mounting the main board case 30 and the auxiliary board cases 40 and 50 on the holding base plate 10, first, FIG.
As shown in FIG.
0 so as to be inserted from above into the auxiliary board case holding parts 12 and 13 on both sides. At this time, when the auxiliary board case 40 is inserted into the auxiliary board case holding portion 12, the engaging protrusions 44 and 45 on the right side of the auxiliary board case 40
When the locking claw 46 at the lower part of the case is locked by the locking opening 18, it slides downward while engaging with the engaging projections 24, 25 of the guide part 22 on the 0 side. The lower portion contacts the lower support plate 20, and the auxiliary board case 40
The engagement of the engagement projections 44 and 45 with the engagement protrusions 4 and 25 and the engagement of the engagement claw 46 and the engagement opening 18 allow the engagement with the fixed position.

Similarly, when the auxiliary board case 50 is inserted into the auxiliary board case holding portion 13, the engagement protrusions 54 and 55 on the left side of the auxiliary board case 50 are moved to the guide portions 2 on the holding base plate 10 side.
3 and slide downward while engaging with the engaging projections 26 and 27,
When the locking claw 56 at the lower part of the case is locked in the locking opening 19, the lower part of the auxiliary board case 50 comes into contact with the lower support plate 21, and the auxiliary board case 50 engages with the engaging projections 26 and 27. The protrusions 54 and 55 are engaged with each other and the locking claw 56 and the locking opening 19 are locked in place.

Next, as shown in FIG. 6, the main board case 30 is inserted into the center of the holding base plate 10 from above. At this time, when the main board case 30 is inserted into the main board case holding portion 11, the hook-shaped engaging edge 34 on the right side of the main board case 30.
Engages with the hook-shaped engaging edge 43 of the auxiliary board case 40 and slides therethrough, and the left engaging edge 33 of the main board case 30 engages with the engaging edge 53 of the auxiliary board case 50. Then slide there. When the main board engaging opening 35 at the center of the case plate 31 is locked by the locking claw 14 on the holding base plate 10 side,
The lower portion of the main board case 30 abuts on the lower support plate 15, and the main board case 30 includes the hook-shaped engagement edge 34 and the auxiliary board case 4.
The engagement of the hook-shaped engagement edge 43 on the 0 side, the engagement of the engagement edge 33 with the engagement edge 53, and the engagement between the engagement claw 14 and the main board engagement opening 35
Is fitted into the fixed position by the locking.

As described above, when the main board case 30 is inserted, the hook-shaped engaging edge 33 and the hook-shaped engaging edge 34 and the engaging edge 33 and the engaging edge 53 are mutually connected like a guide rail. Act, slide smoothly and fit in place.
In this fitted state, the lower right side of the main board case 30 is sandwiched by the sandwiching edges 17 on the holding base plate 10 side, and the hook-shaped engaging edges 43 and 34 on both sides thereof are engaged. Mating part 33
And the engaging edge 53, and the locking claw 14 and the main board locking opening 3
Since 5 is completely engaged, the main board case 30 cannot be moved or removed.

In the above description, first, the auxiliary board case 4
0 and 50 are mounted on the holding base plate 10, and finally the main board case 30 is mounted. First, the main board case 30 is mounted in a fixed position, and then the auxiliary board cases 40 and 50 are mounted on both sides thereof. You can also.

On the other hand, when the main board case 30 is detached from the holding base plate 10, it is impossible to move or remove the main board case 30 as described above. Is removed from the holding base plate 10, and then the main board case 30 is finally removed.

That is, as shown in FIG. 8, first, the locking claw 46 of the right auxiliary board case 40 is pushed to disengage from the locking opening 18 on the holding base plate 10 side. Lift and slide 40 up and off. Further, the locking claw 56 of the left auxiliary board case 50 is pushed to disengage from the locking opening 19 on the holding base plate 10 side. In this state, the auxiliary board case 50 is lifted up and slid, and Remove.

In this state, both sides of the main board case 30 on the holding base plate 10 are empty, the main board case 30 is horizontally moved to the left, and the main board case 30 is disengaged from the clamping edge portion 17. The main board case 30 can be taken out from the holding base plate 10 forward.

Although the left auxiliary board case 50 can be removed before the right auxiliary board case 40, even if the left auxiliary board case 50 is removed first, the hook shape of the right auxiliary board case 40 can be removed. Since the engaging edge 43 is engaged with the hook-shaped engaging edge 34 of the main board case 30, the main board case 30 can be removed only after the right auxiliary board case 40 is removed.

As described above, the main board case 30 containing the main control board A is provided with the auxiliary board cases 40 and 50 on both sides thereof.
Unless the main board case 30 is removed from the holding base plate 10, the main board case 30 cannot be removed in a very short time during business hours at the game arcade. However, the main board case 30, the auxiliary board case 40,
50 is detachably mounted on the holding base plate,
At the time of maintenance, inspection, repair, improvement, and the like of the gaming machine, these board cases can be removed without using any tools.

FIGS. 9 to 11 show a substrate storage case device according to another embodiment. This substrate storage case device includes a holding base plate 60, a main substrate case 80, an auxiliary substrate case 90, and an auxiliary substrate case 95. Holding base plate 60
The main board case holding portion 61 for holding the main board case 80 is provided at the center portion, and auxiliary board case holding portions 62 and 63 are provided on both left and right sides thereof, and are formed in a flat plate shape.

The main board case holding portion 61 is provided with two locking claws 6 at the lower part for holding the large main board case 80.
4 and 65 are provided, and guide portions 66 and 67 for guiding both side edges of the main board case 80 are provided on both side portions so as to protrude forward, and engagement convex portions 68 and 69 are provided on the guide portions 66 and 67. The mating projections 68 and 69 engage and hold both side edges of the main board case 80.

Locking claws for locking locking recesses 93, 98 provided on the back surface of auxiliary board cases 90, 95, which will be described later, are provided in the left and right auxiliary board case holding portions 62, 63 below the holding board. 75 and 76 are formed, and hook-shaped engaging portions 72, 73 and 74 are provided on both sides thereof so as to engage with and hold both side edges of the auxiliary board cases 90 and 95.

Although not shown in the drawing, the main board case 80 is formed in a rectangular box shape by covering a case cover so as to cover the rectangular case plate, similarly to the above. Similarly, the main control board is stored. Similarly, the auxiliary board cases 90 and 95 are also formed in a rectangular box shape by covering a case cover so as to cover the rectangular case plate, and a lamp control board and an audio control board as auxiliary control boards are provided therein. Are respectively stored.

The holding base plate 60 having the above structure is fixed to the back side of the protective cover in the pachinko game machine, and the holding base plate 6
As shown in FIG. 9, the main board case 80 and the auxiliary board cases 90 and 95 are removably mounted on the top 0.

When the main board case 80 and the auxiliary board cases 90 and 95 are mounted on the holding base plate 60, first, the main board case 80 is inserted into the main board case holding portion 61 from above the holding base plate 60. Installing. At this time,
When the main board case 80 is inserted into the main board case holding portion 61, both side edges slide downward while being guided by the guide portions 66 and 67, and the locking claws 64 at the lower portion of the holding base plate 60,
65 is a locking opening 81, 82 at the lower part of the main board case 80.
And is fitted in place.

Next, the auxiliary board cases 90 and 95 are mounted on the auxiliary board case holding portions 62 and 63 on both lower sides of the holding base plate 60 from the front. At this time, the auxiliary board cases 90, 9
The two auxiliary board cases 90 and 95 are fitted so that the both side edges of 5 are engaged with the hook-shaped engaging parts 72, 73 and 74 protruding from both sides of the auxiliary board case holding parts 62 and 63, and thereafter, , The auxiliary board cases 90 and 95 are slightly pushed up.

Thus, as shown in FIG. 10, locking claws 75, 76 provided on both lower sides of the holding base plate 60 are provided with locking recesses 93, 98 provided on the back surfaces of the auxiliary board cases 90, 95.
And the side edge portions of the auxiliary board cases 90 and 95 are engaged with the hook-shaped engagement portions 72, 73 and 74.
The auxiliary board cases 90 and 95 are securely held on the auxiliary board case holding portions 62 and 63. At this time, the auxiliary board cases 90 and 95 are connected to the main board case 8 as shown in FIG.
0, and is attached to the lower part of the
0, 95, the lower locking openings 81, 82 and the holding base plate 60
The locking claws 75, 76 at the bottom of the
Will be obscured by.

Therefore, when removing the main board case 80, as shown in FIG. 11, first, the locking claws 75, 76 on both lower sides of the holding base plate 60 are pushed to engage the locking recesses 93, 98. , And the auxiliary board cases 90 and 95 are removed from the holding base plate 60. Then, the main board case 80 on the holding base plate 60 is removed by removing the locking claws 64 and 65 locking the locking openings 81 and 82. As described above, the main board case 80 incorporating the main control board cannot be removed unless the auxiliary board cases 90 and 95 are removed from the holding base plate 60, and during the business hours at the game hall,
The main board case 80 cannot be replaced illegally in a very short time.

The holding base plate 10 in the above embodiment,
60 can also be formed integrally with the protective cover 5 of the pachinko gaming machine. In the above embodiment, the main board cases 30, 80 and the auxiliary board cases 40, 50, 90, 95
With respect to the holding base plates 10 and 60, the locking claws 46, 56 and 6
4, 65, 75 and 76 are used for locking and fixing, but the board case can be locked and fixed using other locking and fastening means such as clips.

[0045]

As described above, according to the detachable structure of the board storage case of the pachinko gaming machine of the present invention, when the main board case is removed from the main board case holding portion of the holding base plate, first, the auxiliary board is removed. The lock of the main board case locking means is released by releasing the lock of the case locking means, removing the auxiliary board case from the auxiliary board case holding section, and thereafter moving the main board case to the auxiliary board case holding section side. The main board case containing the main control board can be removed only after the auxiliary board case is removed from the holding base plate because the main board case is released and the main board case is removed. It is possible to prevent the act of illegally replacing the main board case in a very short time during the business hours at the place.

[Brief description of the drawings]

FIG. 1 is a rear view of a pachinko gaming machine showing one embodiment of the present invention.

FIG. 2 is a perspective view of a holding base plate.

FIG. 3 is a perspective view of a main board case.

FIG. 4A is a perspective view of an auxiliary board case 40, and FIG.
5 is a perspective view of an auxiliary board case 50. FIG.

FIG. 5 is a perspective view when the auxiliary board case is mounted on the holding base plate.

FIG. 6 is a perspective view when the main board case is mounted on the holding base plate.

FIG. 7 is a perspective view in which a main board case and an auxiliary board case are mounted on a holding base plate.

FIG. 8 is a perspective view when the auxiliary board case is detached from the holding base plate.

FIG. 9 is a perspective view of another embodiment when mounted on a holding base plate.

FIG. 10 is a perspective view showing a state where a main board case and an auxiliary board case of another embodiment are mounted on a holding base plate.

FIG. 11 is a perspective view when an auxiliary board case of another embodiment is detached from a holding base plate.

[Explanation of symbols]

 1-Substrate storage case device 10-Holding base plate 11-Main substrate case holding portion 12-Auxiliary substrate case holding portion 13-Auxiliary substrate case holding portion 14-Locking claw 15-Hinge portion 17-Nipping edge portion 18, 19- Locking opening 30-Main board case 40, 50-Auxiliary board case

Claims (5)

[Claims] 1. A pachinko game machine comprising: a main board case accommodating a main control board for mainly controlling a game operation; and an auxiliary board case accommodating an auxiliary control board for supplementarily controlling a game operation. In a detachable structure of a substrate storage case of a pachinko game machine detachably mounted on a holding base plate, a main substrate case holding portion for holding a main substrate case on the holding base plate and an auxiliary substrate case holding portion for holding an auxiliary substrate case The main board case holding section is provided with main board case locking means for locking the main board case, and the auxiliary board case holding section is provided with an auxiliary A board case locking means is provided, and the main board case locking means is unlocked by moving the main board case to the auxiliary board case holding portion side, and the main board case is fixed to the holding base plate. From Detachable structure of the substrate storage case of the pachinko gaming machine, characterized in that it is configured to be to. 2. The main board case locking means includes a locking claw for locking the main board case with the main board case holding portion, a locking opening, and a clamping edge portion extending from a side plate. Then, the main board case is moved to the auxiliary board case holding portion side, so that the holding edge portion is released, and the engagement between the locking claw and the locking opening is released. 2. The structure for attaching and detaching a substrate storage case of a pachinko gaming machine according to claim 1, wherein: 3. The auxiliary board case holding portion is formed on both sides of the main board case holding portion on the holding base plate, and the auxiliary board is provided adjacent to both sides of the main board case held by the main board case holding portion. The case is held, and a hook-shaped locking edge provided on a side of the main board case is engaged with a hook-shaped locking edge provided on a side of the auxiliary board case on one side. 3. The structure for attaching and detaching a substrate storage case of a pachinko gaming machine according to claim 2. 4. A main board case containing a main control board for mainly controlling a game operation and an auxiliary board case containing an auxiliary control board for controlling a game operation in a pachinko game machine. In a detachable structure of a substrate storage case of a pachinko game machine detachably mounted on a holding base plate, a main substrate case holding portion for holding a main substrate case on the holding base plate and an auxiliary substrate case holding portion for holding an auxiliary substrate case The main board case holding section is provided with main board case locking means for locking the main board case, and the auxiliary board case holding section is provided with an auxiliary A board case locking means is provided, and the auxiliary board case is mounted on the auxiliary board case holding portion of the holding base plate so as to cover the main board case locking means and locked by the auxiliary board case locking means. Yo Detachable structure of the substrate storage case of the pachinko gaming machine, characterized in that configured. 5. The main board case locking means has a locking claw and a locking opening for locking the main board case with the main board case holding portion, and when the main board case is removed. 5. The board storage of a pachinko gaming machine according to claim 4, wherein said auxiliary board case is detached from said holding base plate, and said main board case locking means is unlocked to remove said main board case. Detachable structure of the case.