JP2003340094A - Cheat opening preventing mechanism for board case - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent board case cheat opening. <P>SOLUTION: A main control board 40 is accommodated within a case in which a main board cover 30 is stoppage mounted on a main board case 20. The cheat opening preventing mechanism of this case has a case engaging portion 50 connected to the main board case 20 by a case connecting portion 59, a cover engaging portion 60 connected to the main board cover 30 by a cover connecting portion 69, and a joining member 70 arranged within space for engagement formed with both engaging portions being opposing each other and overlapping each other. When the case engaging portion 50 and the cover engaging portion 60 are opposing each other and overlap each other, the joining member 70 is engaged with the case engaging portion 50 and the cover engaging portion 60 within the engagement space and a state that the main board cover 30 is mounted on the main board case 20 is held. Further, connecting portions 59 and 69 can be cut and the main board cover 30 can be removed from the main board case 20 by cutting this. <P>COPYRIGHT: (C)2004,JPO

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pachinko machine and a slot machine.
Control the operation of gaming machines in gaming machines such as cut machines
Regarding the board case that houses the control board, etc.
To prevent unauthorized opening of the board case containing
Unauthorized opening of the board case to prevent fraudulent acts on the board
It relates to a prevention mechanism. [0002] Gaming machines such as pachinko machines and slot machines
Has a control board that controls the operation of the gaming machine.
You. For example, pachinko machines can be opened and closed with respect to the outer frame
Game board and back mechanism board in the storage frame on the back side of the assembled front frame
Can be opened and closed.
It is attached. The same applies to slot machines
The control board is attached to the back of the
You. These control boards control the payout of prize balls or medals,
Open / close control of electric accessories, reel rotation control, symbol combination
Pachinko machine or slot machine
A board that controls the operation of a gaming machine.
A game machine with a ROM on which software
It has a role as a central control device for controlling movement.
For this reason, the control board is
It is housed in a board case so that it is difficult to modify
In addition, when this board case is opened, the trace is
Measures for preventing unauthorized opening (or unauthorized modification) will be provided.
It is composed of As such unauthorized opening prevention means, for example,
If a plurality of cuttable screw fastening pairs are fastened with special screws
There are means. This is the case body member and this case body
A base consisting of a case lid member
In a plate case, the case body member and the case lid member
Screw thread and thread penetration corresponding to each side edge
Formed a plurality of screw fastening pairs consisting of
And a pair of screw screw part and screw penetration part in the tightening direction
Special screws that can only be operated
Is formed with an engaging part only in the direction
Screws where the joints have been spirally removed, hereafter referred to as
"One-way screw")
You. In this configuration, the case lid member and the screw penetration
A cutting portion that can be cut is formed between the portion and the portion. In the above unauthorized opening prevention means, an administrator controls
When opening the PCB case for maintenance and inspection of the PCB
Cut the cut part of the fastening pair fastened with one-way screw
And cut the screw penetration from the case lid.
Release the connection between the case lid member and the case body member
Then, the case lid member is opened. Thus, the case lid member
Is opened for maintenance and inspection.
To other fastening pairs that have not yet been fastened using one-way screws
To attach and close the case lid to the case body.
You. In addition, the board case contains the board management number and opening history.
The board management sticker to be displayed is affixed, and the management that opened
The user writes the date of opening and the name of the opening person on this board management seal.
And manage it. [0005] Unauthorized release as described above
According to the means of prevention, one-way screws are generally loosened
Can not be rotated in the direction
Since the cut section needs to be separated, the board case is opened.
Later, the cutting trace clearly remains, making unauthorized opening impossible
Seems to be. However, such hands to prevent unauthorized modification
Skillful tampering to bypass this, even with steps
Have been discovered sporadically, and are still not complete
It is pointed out that it is hard to do everything. [0006] For example, an unauthorized person can use special means
Removed without damaging directional screws, after tampering
By re-fastening the removed one-way screw to its original position,
Modifications that make it hard to spot fraud at first glance
Have been found, and such cases gradually
It began to spread to. This is fraudulent
The essentials of the board case to prevent any remodeling activities before they happen
It is a serious problem that impairs the function and early improvement is desired.
Was. [0007] The present invention has been made in view of the above problems.
Yes, it can be easily discovered when unauthorized
Configuration that can effectively prevent unauthorized opening
Provide a mechanism to prevent unauthorized opening of games and provide fair games
To provide a game machine board case that can
You. [0008] To achieve the above object, the present invention
In the invention, a case body member attached to the gaming machine,
A case lid member attached to the case body member;
Case formed by attaching a case lid member to the base body member
Board case that houses the control board inside the
Unauthorized opening prevention mechanism is integrally connected to the case body
It is integrally connected to the provided main body side engaging part and the case lid member.
The case lid member is attached to the case body member.
Is formed so as to face and overlap with the main body side engagement part when
The lid side engaging portion, the main body side engaging portion and the lid side engaging portion face each other.
For engagement formed between these two engagement parts when they overlap
And a connecting member disposed in the space. Sa
In addition, the main body side engaging part and the lid side engaging part
The connection member disposed in the engagement space in the state
In the main body side engaging portion and the lid side engaging portion
Is also engaged, and the case lid member is attached to the case body member
It is configured to maintain the state. And the body side
At least one of the engaging portion and the lid-side engaging portion.
Connection part with case body member or case lid member is cut
It is possible to cut this connection part and
Constructed so that the case lid can be removed from the body
Have been. [0009] With the unauthorized opening prevention mechanism configured as described above,
According to the case, the control board is attached to the case body member inside.
When the base cover member is attached to close it,
And the lid-side engaging portion face each other and overlap with each other.
In the space for engagement between the two engaging portions that overlap with each other.
If the connecting member is arranged, both engaging parts are opposed and overlapped
Sometimes, the main body side engaging portion and the connecting member in the engaging space
While engaging, the lid side engaging portion also engages with the connection member. This
As a result, the main body side engaging portion and the lid side engaging portion are connected via the connecting member.
The case lid is closed and mounted on the case body.
It is engaged and held in the state of being worn. Thus, the engagement
In the space, the main body side engaging portion and the lid side
The engagement with the mating part is maintained, so this engagement is released from outside
It is impossible to perform
It cannot be released or removed from the material. Here, the main body side engaging portion and the lid side engaging portion are
At least one of the case body member and case
The connection part with the case lid member is configured to be cuttable.
If you cut the connecting part of the case body member from the case lid member
Can be removed, but if the connection is cut in this way
You can easily find it because it has traces of destruction
Effectively deter fraud. However, when performing maintenance
Cut the connecting part in this way and open the case lid member
A maintenance check is performed. In this case, the case body member and
The case lid member has a plurality of sets of main body side engaging portions and lid side engaging portions.
Parts are provided, and after the maintenance inspection is completed,
Attach the connecting member to the
The case body and the case lid member are
Engage and hold in the closed state. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a preferred embodiment of the present invention;
In a preferred embodiment, the board case is connected to a slot machine.
An example in which the present invention is applied will be described. FIG. 2 shows a typical example of a slot machine.
This slot machine SM has a
Cover the base 1 and its front opening so that it can be opened and closed freely.
Substantially rectangular parallelepiped cabinet composed of
The game configuration mechanism is provided in the net case.
On the front surface of the cover 2, a display window 3 for displaying symbols is provided.
Start lever 4, stop button 5, medal slot 6,
Receiving tray to receive medals paid out from Dal payment outlet 7
8 and the like are provided as shown. This slot machine
FIG. 3 shows the inside of the main body case 1 in the case SM.
Here, the main board assembly MBA,
Rotating reel having three reels 11a to 11c
Device 11, game medal payout device 12, power supply board 13,
The technical medal auxiliary storage 14 and the like are arranged as shown in the figure.
You. The cover 2 is hinged to the main body case 1.
Electrical wiring extending from the body case 1 to the cover 2
However, this wiring is omitted in FIG.
You. [0013] Main board assembly in the above configuration
Applying the unauthorized opening prevention mechanism according to the present invention to the MBA
The main board assembly MBA will be described below.
You. The main board assembly MBA is shown in FIGS.
The main board assembly MBA is
The main board case 20 fixed to the
ROM 41 and the like are provided and fixed inside the base 20.
Main control board 40, and thus mounted
On the main board case 20 covering the main control board 40
And the main board cover 30 that can be freely opened and closed
It is configured to have. Note that this main board assembly M
In the case of BA, the main board case 20 is defined in the claims.
The case corresponds to the case body member specified in
-30 corresponds to the case lid member. The main board case 20 is shown in FIGS.
As shown in the figure, a case formed in a rectangular box shape with an open front
The case 21 has an internal space 21.
5A, the main control board 40 is fixed as shown in FIG.
Is arranged. The main board cover 30 is shown in FIGS.
As shown in FIG. 3, the rear surface was formed in a rectangular box shape with an opening.
It has the cover housing 31 and the main control board 40 is arranged and fixed.
So that it overlaps the front of the case housing 21
Can be As a result, the main control board 40 is
Formed between case 20 and main board cover 30
It is arranged in the case space. A case housing in the main board case 20
A hinge shaft 22 is formed on the outer surface of the upper wall of the lower wall 21.
A locking arm 23 protruding forward is formed on the surface.
The cover housing 31 of the main board cover 30
A hinge that swingably engages with the hinge shaft 22 on the outer surface of the upper wall.
And a locking arm 33 formed on the outer surface of the lower wall.
Are formed. Therefore, the hinge shaft 22 and the hinge
The main board by hinge-engaging the
The main board cover 30 is attached to the case 20 by this hinge.
The opening / closing swing can be performed about the engaging portion. this
In this way, the main board cover 30 is
20 and the closed state, the locking arm 23
Engagement with the locking projection 33 is maintained in the closed state. What
In addition, it projects forward all around the front end of the case housing 21.
A protruding case side fitting rib 25 is formed, and the cover housing 3 is formed.
Cover side fitting that protrudes rearward over the entire circumference of the rear end of 1
A mating rib 35 is formed.
As shown in FIG. 1, the main board
The bar 30 is attached to the main board case 20 in a closed state.
Can be Thus, the main control board 40 is mounted.
Cover the main board case 20
With the cover 30 attached, the locking arm 23
Is only engaged with the locking projection 33,
The cover 30 can be easily opened. So, like this,
The main board cover 30 attached in the stopped state cannot be opened.
In order to prevent unauthorized operation,
A release prevention mechanism is provided, which is described in more detail below.
explain. In the main board case 20, a case
Cases are respectively attached to the outer surface of the right side wall and the outer surface of the lower
(Two in total) connected via the connecting part 59
Case engaging portion 50 (the main body side engaging portion
On the other hand, in the main board cover 30,
Are attached to the outer surface of the right and lower walls of the cover housing 31.
Each two connected via the cover connecting portion 69 (the
A total of four (4) cover engaging portions 60
(Corresponding to the joint part). As described above,
When the board cover 30 is closed to the main board case 20
When installed, as shown in FIGS.
The base engaging portion 50 and the cover engaging portion 60 face each other and overlap with each other.
It is configured as follows. Note that these four sets of case engagement
Part 50 and cover engaging part 60, and connecting member 7 described later.
0 constitutes an unauthorized opening prevention mechanism according to the present invention.
You. The case engaging portion 50 is a cylindrical case having a bottom.
From the bottom cylindrical portion 51 and the bottom surface 52 of the case-side cylindrical portion 51.
And a pair of standing case-side engaging arms 53.
The outer surface of the case-side cylindrical portion 51 is
And is connected to the outer surface of the case housing 21. A pair of
The base side engaging arms 53 face each other and
A locking projection 53a is provided at the tip to extend in the opposite direction.
You. The cover engaging portion 60 is a cover-side cylindrical portion having a bottomed cylindrical shape.
61 and the one standing upright from the bottom surface 62 of the cover-side cylindrical portion 61.
The pair of cover-side engaging arms 63 and the cover-side cylindrical portion 61
A pair of positioning projections 64 projecting inward from the inner wall;
The outer surface of the cover-side cylindrical portion 61 is connected to the cover.
Connected to the outer surface of the cover housing 31 via the portion 69.
You. Note that the pair of cover-side engaging arms 63 is
Oppose each other so as to be substantially orthogonal to the side engagement arm 53.
Locking projection 63 extending in the opposite direction at the tip thereof.
a is provided. Further, on the outer periphery of the distal end of the case-side cylindrical portion 51,
The connection portion fitting rib 51a is formed, and the cover side cylindrical portion 61 is formed.
A connecting portion fitting rib 61a is formed on the outer periphery of the tip of
As described above, the main board cover 30 is
The case engaging portion 50 is attached to the case 20 in a closed state.
When the cover and the cover engaging portion 60 overlap each other,
As shown, both fitting ribs 51a, 61a are fitted. this
So that both fitting ribs 51a and 61a are fitted.
External access to internal
Can be effectively prevented. In this way, the engagement portions 50 and 60 are heavy.
In this state, the internal spaces of both cylindrical portions 51 and 61 are joined.
Connection member 70 is disposed in the engagement space formed by
In this case, the connecting members 70 allow the two engaging portions 50 and 60 to be connected.
Are engaged. This is explained below.
I will tell. The connecting member 70 is shown in FIGS.
In the center of the internal space of the cylindrical portion 71,
It has a locking rib 72 formed so as to close it.
The locking rib 72 has a pair of fan-shaped
An arm insertion opening 73 is formed. The cylindrical portion 7
1 has a positioning slit 74 symmetrically located on one side.
Is formed. The connection member 70 is, for example, a cover
It is inserted and mounted in the cylindrical portion 61 of the engaging portion 60.
You. At this time, the side provided with the positioning slit 74 is
Insert the positioning projection 64 into the cylindrical part 61
Fit into the lit 74. Thus, the connecting member 70
When pushed into the cylindrical portion 61, the cover-side engaging arm 6
3 is inserted into the arm insertion opening 73 formed in the locking rib 72.
Get in. At this time, the locking projection 63a at the tip is inserted into the arm.
The cover abuts against the inner peripheral end of the entrance opening 73 and is pushed to the outer peripheral side to
The side engagement arm 63 enters the outer peripheral side in an elastically deformed state.
Put in. When the connecting member 70 is completely pushed in,
The locking projection 63a goes over the locking rib 72 and the arm is inserted.
Protrudes to the opposite side through the opening 73 and is covered by elastic force.
The back side engagement arm 63 returns to the original shape and is shown in FIG.
Thus, it is locked by the locking rib 72. In this state,
The connecting member 70 projects half from the cover engaging portion 60. What
In this state, pull the connection member 70 in the
But there is no escape. The connecting member 70 is thus engaged with the cover.
After attaching to the main part 60,
The in-substrate cover 30 is overlaid and closed. This
As described above, the case engaging portion 50 is
Are stacked facing each other and attached to the cover engagement portion 60.
The projecting portion of the connection member 70 is a cylindrical portion of the case engagement portion 50.
51, the case-side engaging arm 53 is
It enters the insertion opening 73. At this time, the locking projection at the tip
53a is in contact with the inner peripheral end of the arm insertion opening 73 and is on the outer peripheral side.
And the case-side engagement arm 53 is elastically deformed toward the outer periphery.
It enters in the state that was done. Then, the main board case 20
The main board cover 30 is completely closed.
Then, the locking projection 53a climbs over the locking rib 72 and
Projecting to the opposite side through the
The case side engagement arm 53 returns to its original shape, and FIG.
As shown in FIG. As described above, on the main board case 20
The main board cover 30 is attached in a closed state to the case
When the cover engaging portion 60 is opposed to the engaging portion 50 and
At the same time, as shown in FIGS.
The locking projection 53a at the end of the joint arm 53 is the arm insertion opening.
73 and projecting to the opposite side
Similarly, the locking projection at the tip of the cover-side engagement arm 63
63a passes through the arm insertion opening 73 from the opposite side and is opposite
The projection protrudes to the side and is locked by the locking rib 72. As a result,
The case engaging portion 50 and the cover engaging portion 6 via the connecting member 70
0 is engaged and cannot be removed from the outside
State. Therefore, the main board cover 30 is opened.
Open the main board cover 30 and open the case
Access to the main control board 40
For example, the RO mounted on the main control board 40
Unauthorized access to M41 can be reliably prevented. In particular, as can be seen from the above configuration description,
Adopts a configuration in which the connection part fitting ribs 51a and 61a are fitted
First of all, in this part, illegal from inside to outside
Access can be effectively prevented, and furthermore, the fitting portions 51a,
The cylindrical portion 71 of the connecting member 70 is located on the inner peripheral side of 61a.
External access to the inside of the cylinder 71
(The locking rib 72 and the locking projection 5 of the case-side engagement arm 53
3a and a locking projection 63a of the cover-side engaging arm 63;
Access to the locking portion) by the cylindrical portion 71.
Effective (double) prevention. Next, as described above, the slot machine S
Main board assembly attached to main body case 1 of M
Regarding the re-MBA, the maintenance points of the main board 40 inside it
The case where the inspection work is performed will be described. Perform maintenance work
At this time, for example, as shown by a two-dot chain line in FIG.
The cover connecting portion 69 is cut using a tool such as a hopper. This
As a result, the cover engaging portion 60 and the cover housing 31 are cut off.
The main board cover 30 can be opened because
The main control board attached to the main board race 20
Maintenance and inspection of the plate 40 can be performed. The case engagement portion 50 and the cover engagement
The unit 60 is located on the right side of the case housing 21 and the cover housing 31.
Two on the outer surface of the wall and two on the outer surface of the lower wall
However, the case engaging portion 50 and the cover engaging portion 60 are connected.
Engage via the member 70 and onto the main board case 20
When holding the main board cover 30 in the closed state,
Only one of the right side wall outer surface and the lower side wall outer surface
The connecting member 70 is arranged and engaged with only one of them. this
Therefore, only the cover connecting portion 69 engaged in this manner is used.
Is disconnected and the other is still usable, as described above
After maintenance has been completed, the unused
The connecting member 70 is connected to the engagement portion 50 and the cover engagement portion 60.
Arrange and engage both. Because of this, the main
In the case of the substrate assembly MBA, once
Maintenance inspection is possible. Next, FIG. 18 shows a different example of the connecting member.
This will be described with reference to FIGS. This connection member 80
It has a configuration similar to the connection member 70 described above,
Formed in the center of the internal space so as to close this internal space
The locking rib 82 includes
A pair of fan-shaped arm insertion openings 83 located symmetrically
Is formed. However, a part of the locking rib 82 is notched.
82a are formed, and the arm insertion opening 83 is
This notch is smaller than the arm insertion opening 73 of the connection member 70.
82a. In addition, the cylindrical portion 81
A symmetrical positioning slit 84 is formed on one side
Have been. The connecting member 80 is, for example,
It is inserted and mounted in the cylindrical portion 61 of the portion 60, and
As in the case of the connection member 70, the positioning projection 64 is
The cover-side engaging arm fits in the predetermined slit 84 and
63 enters the arm insertion opening 83, and the locking projection 63
a is locked by the locking rib 82. However, at this time,
The protrusion 63a is at a position shifted from the notch 82a of the locking rib 82.
It is locked in the place. Next, the main board case 20
The in-board cover 30 is overlaid and closed to engage the case.
The cover engaging portion 60 is opposed to the portion 50 and
The projecting portion of the connection member 80 attached to the engagement portion 60
It is pushed into the cylindrical portion 51 of the case engaging portion 50. this
As a result, the case side engagement arm 53 is
And the locking projection 53a does not come out of the notch 82a.
The locking rib 82 is locked at the set position. As a result, the main board case 20 is
When the in-substrate cover 30 is mounted in the closed state and the case engages
A state in which the cover engaging portion 60 is opposed to and overlapped with the portion 50
The cover engaging member 50 is connected to the case engaging portion 50 via the connecting member 80.
The mating portion 60 is engaged and can be detached from the outside.
There is no state. Therefore, open the main board cover 30.
I can't release it and open the main board cover 30
Fraud against the main control board 40 provided in the case
Access, for example, mounted on main control board 40
Unauthorized access to the ROM 41
You. The main board assembly thus engaged and held is
For the assembly MBA, the main board 40 inside the
When performing maintenance work, use tools such as nippers.
Then, the cover connecting portion 69 is cut. This allows
As described above, the cover engaging portion 60 and the cover housing 31 are separated.
So that the main board cover 30 can be opened.
The main control board attached to the main board race 20
For example, maintenance and inspection of 40 can be performed. Further, in the case of the present embodiment, the
In the state where the bar connecting portion 69 is separated, the case connecting portion 59
That remains connected to the main board case 20 via
The parts 50 and 60, that is, the connection members 80 were provided inside.
The coupling component between the case engaging portion 50 and the cover engaging portion 60
21 by grasping the cover engaging portion 60 by hand or the like.
Then, the cover engaging portion 60 is rotated as shown by the arrow.
Here, the positioning protrusion 64 of the cover engaging portion 60 is a connecting member.
80 is fitted with the positioning slit 84,
-The engaging portion 60 and the connecting member 80 are rotated together,
Locking projection 53 of the case-side engagement arm 53 of the engagement portion 50
a is located in the notch 82a. As a result, the locking projection
The locking between the locking rib 82 and the locking rib 82 is released.
0 and the connecting member 80 are removed from the case engaging portion 50.
The cover engaging portion can be removed in this manner.
At 60, the locking projection 63 of the cover-side engagement arm 63 is
If it is pushed inward, the connection member 80 can be
Easy to remove. And maintenance
Later, the unused case engagement portion 50 and the cover engagement
The connecting member 80 thus removed is provided in the portion 60
Both are engaged. That is, in the case of this example, the connection member
80 can be reused. Next, another different example of the connecting member will be described.
This will be described with reference to FIGS. This connection
The connecting member 90 has a configuration similar to the connecting members 70 and 80 described above.
And a wavy knurl 91a is formed on the outer peripheral surface.
This internal space in the center of the internal space of the cylindrical part 91
It has a locking rib 93 thus formed.
The locking rib 93 has a pair of fan-shaped arms that are symmetrically located.
And the center of the locking rib 93 is formed.
Is formed with a notch 93a for insertion and extraction. Also cylindrical
The upper and lower ends of the portion 91 are located 180 degrees apart from each other
An arcuate positioning notch 92 is formed as shown.
ing. In this example, the circle of the case engaging portion 50 is
A pair of positioning protrusions 54 are provided in the cylindrical portion 51 as shown in FIG.
The cover engaging portion 60
No positioning projection is formed in the cylindrical portion 61 of FIG. This
Therefore, in this case, first, the connection member 90
It is inserted and mounted in the cylindrical portion 51 of the engaging portion 50,
At this time, the positioning projection 54 is positioned at the end of the positioning notch 92.
It is attached in contact with the surface 92a. Connection member 90
When pushed into the cylindrical portion 51 as in
And the case side engagement arm 53 is inserted into the arm insertion opening 94.
The locking projection 53a is inserted into the locking rib 93 as shown in FIG.
It is locked so that The connecting member 9 is thus provided.
Instead of pushing 0, the locking projection 53a is
When the connecting member 90 is pushed in so as to pass through
Locking projection without elastically deforming the base side engagement arm 53.
It is possible to make the wake 53a pass through the arm insertion opening 94.
Thereafter, the connecting member 90 is moved to the position as shown in FIG.
The decision projection 54 and the end face 92a of the positioning notch 92
By rotating to the contact position, the locking projection 53a is locked.
It can be easily locked with the rib 93. Next, the main board case 20
The board cover 30 is overlaid and closed, and the case engaging portion 5 is closed.
0, the cover engaging portion 60 is opposed to and overlapped with the case engaging portion.
The projecting portion of the connecting member 90 attached to the portion 50 is
-It is pushed into the cylindrical portion 61 of the engaging portion 60. This
The cover side engaging arm 63 is inserted into the arm insertion opening 94.
24, the locking projection 63a is inserted and removed as shown in FIG.
Locking rib 93 at a position shifted from
Is locked. As a result, the main board case 20 is
When the in-substrate cover 30 is mounted in the closed state and the case engages
A state in which the cover engaging portion 60 is opposed to and overlapped with the portion 50
Then, the case engaging portion 50 and the cover
The mating portion 60 is engaged and can be detached from the outside.
There is no state. Therefore, open the main board cover 30.
I can't release it and open the main board cover 30
Fraud against the main control board 40 provided in the case
Access, for example, mounted on main control board 40
Unauthorized access to the ROM 41
You. Note that the main board assembly MBA is
When performing the maintenance and inspection work of the in-board 40, for example,
Cut the cover connecting part 69 using a tool such as
The circuit board cover 30 is opened. Further, also in the case of the present embodiment, as described above,
In the state where the bar connecting portion 69 is separated, the case connecting portion 59
That remains connected to the main board case 20 via
In the sections 50 and 60, do not grasp the cover engaging section 60 by hand.
And rotate it. By this rotation, the cover engaging portion 60
Of the cover side engagement arm 63 with respect to the connection member 90
Then, the locking projection 63a at the tip is inserted into the notch 93a for insertion / extraction.
Can be moved to a position that vertically overlaps with
Then, the cover engaging portion 60 can be removed. This result
As a result, the connecting member 90 is provided in the cylindrical portion 51 of the case engaging portion 50.
It is left attached. In this state, the connection member 9
0 by grasping the cylindrical portion 91 by hand, as shown by the arrow in FIG.
The positioning projection 54 and the end face 92 of the positioning notch 92
a to the position where it comes into contact with
The locking projection 53a of the arm 53 is in the insertion notch 93a.
Position, and connect the connecting member 90 by hand without using a tool or the like.
It can be easily removed as it is. In addition, this
When rotating the connecting member 90 as described above,
Knurls 91a are formed on the outer surface for easy gripping
Have been. In the case of this example, too,
For the case engaging portion 50 and the cover engaging portion 60 used,
The connecting member 90 thus removed is provided, and both are connected.
Can be combined. As described above, the connection members 70, 8
Both 0 and 90 are to be removed and reused.
One connection for one main board assembly MBA
Only the members 70, 80, 90 are used and
Are used as sealing members.
It has become so. Therefore, one main board assembly
One sealing member (ie, connection
It is only necessary to manage the members 70, 80, 90).
It is difficult for those performing
Difficult, effective management of fraud by properly managing sealing members
Can be prevented. In addition, a seal seal that seals this sealing member
Engaging part 50 and cover engaging
The part 60 is made of a transparent resin or the like so that the inside can be seen through,
For example, stamping is performed at the position indicated by reference numeral 93b in FIG.
It is preferable to set a management number with a sticker etc. and manage it.
No. In this case, the case (main board case 20 and
The board management number is provided on the in-board cover 30), and a sealing member is provided.
(That is, the connection members 70, 80, and 90)
The number (or related number) common to the number is assigned to position 9
If it is provided in 3b, it is possible to prevent fraudulent actions more reliably.
Can be. In the above, the main body of the slot machine has been described.
Take the example of the main board assembly mounted in the base
However, the unauthorized opening prevention mechanism of the present invention is not limited to this.
It is not something to be done. For example, other parts of the slot machine
Board case (Iwayu)
A similar configuration is applied to
Suitable for the board case installed inside the pachinko machine.
Can be used. In the above embodiment, the main substrate
The main board case 20 of the assembly MBA is
The part to be fixed to the main body case 1 of the thin SM according to the present invention
The same configuration as the unauthorized opening prevention mechanism may be used. As described above, according to the present invention,
Case lid on the case body with control board inside
Attach so that the material is closed, and engage the main body side engaging part and lid side
When the parts overlap with each other,
The body side engaging portion engages with the connection member and the lid side engaging portion also
Engage with the connection member, so the main body side engagement via the connection member
Part is engaged with the lid side engaging part, and the case lid is attached to the case body member.
Engage and hold the member closed and mounted
Can be. In this manner, the connection member is
The main body side engaging portion and the lid side engaging portion are engaged and held through
Therefore, it is impossible to release this engagement from the outside,
Open or remove the case lid from the case body
Can prevent unauthorized opening.
You. It should be noted that the number of the main body side engaging portion and the lid side engaging portion is small.
At least one of the case body
The connection part with the lid member is configured to be cut,
By cutting the connecting part, the case lid member can be
Can be removed, but this way the connection is
Can be easily found because there are traces of destruction
Can effectively deter fraud. However, for maintenance
In this case, cut the connecting part like this and open the case lid member
Maintenance is performed.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional view showing a main board assembly in which a main body side engaging portion and a lid side engaging portion constituting an unauthorized opening prevention mechanism according to the present invention face each other and overlap each other. It is. FIG. 2 is an external perspective view of a slot machine to which the unauthorized opening prevention mechanism according to the present invention is applied. FIG. 3 is a front view showing the inside of a case main body constituting the slot machine. FIG. 4 is a front view showing a main board assembly attached to the case main body. FIG. 5 is a side view of the main board assembly. FIG. 6 is a perspective view of the main board assembly. FIG. 7 is a perspective view of a main board case constituting the main board assembly. FIG. 8 is a front view of the main board case. FIG. 9 is a side view of the main board case. FIG. 10 is a sectional view of the main board case. FIG. 11 is a perspective view of a main board cover constituting the main board assembly. FIG. 12 is a front view of the main board cover. FIG. 13 is a sectional view of the main board cover. FIG. 14 is a plan view of a connection member constituting the unauthorized opening / closing prevention mechanism according to the present invention. FIG. 15 is a sectional view of the connection member. FIG. 16 is a plan sectional view showing a mechanism for preventing unauthorized opening of the main board assembly. FIG. 17 is a front sectional view showing a mechanism for preventing unauthorized opening of the main board assembly. FIG. 18 is a plan view of a different example of a connection member constituting the unauthorized opening / closing prevention mechanism according to the present invention. FIG. 19 is a cross-sectional view of a connection member according to the different example. FIG. 20 is a cross-sectional plan view showing a mechanism for preventing unauthorized opening of a main board assembly using the connection member according to the different example. FIG. 21 is a front sectional view showing a mechanism for preventing unauthorized opening of a main board assembly using a connection member according to the above-described different example. FIG. 22 is a plan view of still another example of the connection member constituting the unauthorized opening / closing prevention mechanism according to the present invention. FIG. 23 is a side view of the connection member according to the further different example. FIG. 24 is a plan view showing a process of assembling the unauthorized opening prevention mechanism of the main board assembly using the connection member according to the still another example. FIG. 25 is a plan view showing a process of releasing the unauthorized opening prevention mechanism of the main board assembly using the connection member according to the still another example. [Description of Signs] 1 Main body case 2 Cover 3 Display window 4 Start lever 5 Stop button 6 Medal slot 7 Medal payout port 8 Receiving tray 11 Rotary reel devices 11a to 11c First to third reels 12 Game medal payout device 13 Power supply board 14 Game medal auxiliary storage 20 Main board case 21 Case housing 21a Internal space 22 Hinge shaft 23 Locking arm 25 Case side fitting rib 30 Main board cover 31 Cover housing 32 Hinge arm 33 Locking projection 35 Cover side fitting Rib 40 Main control board 41 ROM 50 Case engaging part 51 Case side cylindrical part 51a Engaging part fitting rib 52 Bottom surface 53 Case side engaging arm 53a Locking projection 54 Positioning projection 59 Case connecting part 60 Cover engaging part 61 Cover Side cylindrical portion 61a engaging portion fitting rib 62 bottom surface 63 cover side engaging arm 63a Projection 64 Positioning projection 69 Cover connecting parts 70, 80, 90 Connecting members 71, 81, 91 Cylindrical parts 72, 82, 93 Locking ribs 73, 83, 94 Arm insertion openings 74, 84 Positioning slit 82a Notch 91a Knurl 92 Positioning Notch 93a Insertion / extraction notch SM Slot machine MBA Main board assembly

Claims (1)

Claims: 1. A case body member attached to a game machine, and a case cover member attached to the case body member, wherein the case body member is formed by attaching the case cover member. A main body side engaging portion provided integrally with the case main body member, and a case main body provided integrally with the case lid member; A lid-side engaging portion formed so as to face and overlap with the main-body-side engaging portion when the case lid member is attached to the member; and the main-body-side engaging portion and the lid-side engaging portion face each other. And a connecting member disposed in an engaging space formed between the two engaging portions when the main body side engaging portion and the lid side engaging portion face each other. The contact disposed in the engagement space in an overlapping state. A member is engaged with the main body side engaging portion and also with the lid side engaging portion in the engaging space so as to maintain a state where the case lid member is attached to the case main body member. The connecting portion of at least one of the main body side engaging portion and the lid side engaging portion with the case main body member or the case lid member is configured to be cuttable, and the connecting portion is cut off. Wherein the case lid member is detachable from the case body member.