JPH11300004A - Base plate case - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent such act as inserting a screw driver or the like between a bottom member and a lid member of a base plate case to forcibly open them. SOLUTION: The lid member 24 is made to covere a bottom member 22 with a controller 60 fixed thereon to tighten it with a one-way screw. Then, a hinge shaft 36 is inserted through a bearing groove 83 and a checking body 30 is turned almost by 180 deg. on the hinge shaft 36 so that a cover member 26 comes on a cover receiving part to receive a link part on the rear side of a protruded part 80. A lock 32 is operated to retain a retaining tongue 32a on a retaining part 56 to complete the locking of a base plate case. To remove the one way screw, the cover member 26 must be taken off but it can not be easily removed as the checking body 30 is fixed on the bottom member 22. Thus, the removal of the one way screw becomes very hard.

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 board case for accommodating a game machine control device.

[0002]

2. Description of the Related Art A ball game machine represented by a pachinko machine is
The control device, which is a microcomputer, determines whether or not to execute the jackpot game, and controls the operation of the variable winning device. This control device has a CP on the printed circuit board.
It is a microcomputer configured by mounting devices such as U, ROM, and RAM, and its operation follows a program stored in the ROM. For this reason, the ROM storing the control device program is stored in an incorrect R
There was no end to trying to gain unreasonable gains by replacing them with OM (back ROM). Also, in the case of a spinning-type gaming machine, the hitting / unlocking is determined by the control device, and by replacing the ROM of this control device with an unauthorized ROM, it is possible to achieve an improper gain. Was similar to

In order to cope with such misconduct, a head-shaped screw (one-way screw) that works in the tightening direction but does not work in the loosening direction is used to connect the lid and bottom of the board case. When the board case is opened, a trace of destruction of the screwed portion is left so as to make it easier to find an unauthorized opening (an unauthorized ROM exchange or the like).

When the board case is opened for repairing the control device, the part holding the head side of the one-way screw is cut off from the body side of the board case to open the used one-way screw. Was left as it was. Therefore, there are provided a plurality of places for attaching the one-way screw (normally, four places on each of two opposing sides of the board case, a total of eight places). And if you keep a record of the number of releases (regular releases) in repairs,
By checking with the number of remaining one-way screws,
The presence of unauthorized opening was confirmed.

[0005]

The use of the one-way screw described above has increased the security of the board case. However, conventionally, at two opposing sides of the board case, 1
Two two-way screws per side (screw that can be loosened)
And one one-way screw to connect the bottom member and the lid member, so for example, remove the two-way screw and leave the two one-way screws in place, between the bottom member and the lid member. By inserting and prying a thin tool such as a screwdriver, one or both of the bottom member and the cover member were elastically deformed, and a sufficient clearance for inserting and removing the ROM could be secured. If such a gap is created, insert a driver or the like between the legitimate ROM and the printed circuit board.
It was not impossible to remove it and install an incorrect ROM.

An object of the present invention is to prevent such an action.

[0007]

Means for Solving the Problems and Effects of the Invention
The substrate case described above is configured by connecting a lid member and a bottom member with a screw member, and is a substrate case that accommodates a control device of the gaming machine, wherein the lid member has a screw shaft portion of the screw member. A penetrating part set is provided in which a plurality of penetrating parts that penetrate and do not pass through the head are provided as one set, and the bottom member has a screwing part for screwing a screw shaft part of the screw member into a penetrating part of the lid member. In a substrate case, a plurality of screw members are provided correspondingly to each other, and the cover member and the bottom member are connected by penetrating the screw shaft portion of the screw member through the through portion and screwing the screw member into the screw portion. A cover member for covering the head of the screw member by covering the through-hole set, and fixing means for fixing the cover member to one or both of the lid member and the bottom member. .

[0008] The board case is formed by connecting a lid member and a bottom member with a screw member. Specifically, the lid member
A penetrating part set is provided in which a plurality of penetrating parts that penetrate the screw shaft part of the screw member and do not pass through the head are provided as one set, and the bottom member has
A plurality of screwing portions for screwing the screw shaft portion of the screw member are provided corresponding to the penetrating portion of the lid member, and the screw shaft portion of the screw member is penetrated by the penetrating portion and screwed to the screwing portion. Thereby, the lid member and the bottom member are connected to form a board case. Note that the penetrating portion and the screwing portion may be the same as those in the related art, and the above-described one-way screw may be used as the screw member. Also, one-way screws and two-way screws may be used in combination.

Further, the cover member covers the head of the screw member by covering the through-hole set, and the fixing means fixes the cover member to one or both of the lid member and the bottom member. That is, when the screw member is to be removed, the cover member must be removed, but cannot be easily removed because the cover member is fixed by the fixing means. Therefore, it is extremely difficult to remove the screw member. For example, it is possible to sufficiently prevent an act of removing the two-way screw as a kind of the screw member and prying open the substrate case while leaving the one-way screw. In addition, since it takes time to remove the cover member, there is also an effect of giving up the removal.

If the cover member is not removed, the two-way screw cannot be removed, of course, so that the resistance to prying is extremely high and prying is practically impossible. By the way, if the fixing of the cover member by the fixing means is irreversible, there is a possibility that legitimate work such as repair may be hindered.

According to a second aspect of the present invention, in the substrate case of the first aspect, the fixing means includes a locking mechanism for locking the cover member to one or both of the lid member and the bottom member. Features. With this configuration, at the time of legitimate opening such as repair, the locking mechanism is unlocked, the cover member is removed, and the head of the screw member is exposed, thereby opening the board case in the same manner as the conventional board case. can do.

According to a third aspect of the present invention, in the substrate case according to the first or second aspect, the plurality of through-hole sets are provided, and the plurality of cover members are provided corresponding to the plurality of through-hole sets, respectively. The plurality of covering members are connected to each other by a connecting member to be integrated.

Usually, the substrate case is rectangular, and it is preferable to provide a set of penetrating portions along a plurality of sides to close the substrate case with a screw member. As a matter of course, the arrangement of the threaded portions will also correspond to this. Then, it is preferable to provide a plurality of cover members corresponding to each of the through portion sets. By connecting the plurality of cover members to each other with a connecting member and integrating them, it is possible to reduce the size of components and the amount of materials used, as compared with, for example, using one large cover member.

In the case of adopting a structure in which a plurality of the cover members are connected to each other by a connecting member, the structure described in claim 4 is preferable. According to a fourth aspect of the present invention, in the substrate case of the third aspect, the planar projection shape of the substrate case is substantially rectangular, and the penetrating portions are provided along two opposing sides of the rectangle. In this way, two sets of the penetrating parts are set, and two sets corresponding to the two sets of the penetrating parts are formed.
A connecting member for connecting the two cover members is arranged along one of the sides located between the two opposing sides. With this configuration, the through portion and the screw portion can be arranged in a well-balanced manner.

Further, as in claim 5, claim 4
In the board case described, as a part of the fixing means, a hinge shaft is provided on one of an end of the cover member on the side opposite to the connection member and the bottom member, and a bearing for the hinge shaft is provided on the other, If the cover member is configured to be swingable about the hinge shaft, the locking mechanism is attached to the connecting member, and the connecting member is locked to the bottom member by the locking mechanism. 2 points and 1 by locking mechanism
Since the lid member is pressed against the bottom member side at a total of three points, the resistance to the above-mentioned prying-opening is extremely high, and acts such as unauthorized ROM exchange can be more effectively prevented.

Then, as described in claim 6, claim 5
In the board case described above, in a sealed state in which the cover member covers the through-hole set, the hinge shaft and the bearing are inseparable from each other, and the cover member is swung by a set angle or more from the sealed state. If the hinge shaft and the bearing can be separated and connected to each other, the cover member and the connection member can be easily attached and detached, and the assembly of the board case can be simplified.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings to explain the embodiments of the present invention.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, the structure of a board case 20 according to the present embodiment will be described with reference to FIGS. The board case 20 of the present embodiment includes a bottom member 22, a cover member 24, a pair of cover members 26 connected by a connecting member 28 to form an inhibitor 30 as an integral part, and a lock 32 which is a part of a locking mechanism. It is configured. The lock 32 is fitted and fixed in a mounting hole 34 provided in the center of the connecting member 28. The illustration of the internal structure of the lock 32 is omitted.

The bottom member 22 has a rectangular shape with two corners cut out, and one end face 22a of the notch portion has a hinge shaft 3
A shaft body 40 composed of 6 and a disk-shaped head 38 is provided. The shaft body 40 functions as a part of the fixing means in cooperation with a bearing body 42 provided at an end of the cover member 26, and details thereof will be described later.

The other end face 2 of the cutout portion of the bottom member 22
A groove 44 is provided in the bottom member 22 along the thickness direction of the bottom member 22.
The fourth claw 46 is inserted into the groove 44. Along each of the two short sides of the bottom member 22, four screw portions 48 are provided.
Is provided. These screw portions 48 are provided with holes 54 corresponding to the diameter of the screw shaft portion 50a of the one-way screw 50 shown in FIG. 8, and the screw shaft portion 50a of the one-way screw 50 is screwed into the hole 54. Can be done. The one-way screw 50 corresponds to the screw member according to the first aspect of the present invention, and a head contact surface 50c and an inclined surface 50d are formed on the head portion 50b of the head member 50b. In the loosening direction, a driver groove having a shape in which the driver does not work is provided because of the inclined surface 50d.

Further, the long side 22c of the central portion of the bottom member 22
On the side, a locking portion 56 for locking the locking tongue 32a of the lock 32 is provided upright. The locking portion 56 includes a back plate 56a,
It is composed of a side plate 56b and a ceiling plate 56c, and a portion facing the side plate 56b is open. Therefore, if the lock 32 is operated and the locking tongue 32a is rotated from the open side toward the side plate 56b, the locking tongue 32a can be brought into contact with the lower surface of the ceiling plate 56c and locked. The locking can be released by rotating the locking tongue 32a in the reverse direction.

At four corners of the bottom member 22, screw receivers 58 for fixing the substrate are provided upright, and the control device 60 can be fixed by screws (not shown) screwed into the screw receivers 58. . The control device 60 is a microcomputer in which a CPU (not shown) and the like are assembled on a printed circuit board 60a, and includes a plurality of connectors 60b for supplying power and inputting / outputting signals. Further, through holes 60c for screws are provided at the four corners of the printed circuit board 60a.
A U-shaped notch 60d is provided at the center of the side opposite to the above.

The control device 60 aligns the through holes 60c with the screw receivers 58, and is fixed to the bottom member 22 by screws that pass through the through holes 60c from the upper surface side and screw into the screw receivers 58. . At this time, the notch 60d avoids interference with the locking portion 56 of the bottom member 22.

The lid member 24 is provided with a pair of cover portions 66 each having four penetrating portions 64.
The above-mentioned claw 46 is connected to the end of each covering portion 66.
Each penetrating portion 64 is connected to the covering portion 66 by a pair of connecting portions 68. However, if the connecting portion 68 is cut with a tool such as a nipper, the penetrating portion 64 is connected to the covering portion 66.
Can be disconnected from

The cover member 24 is provided with a lock passage hole 70 through which the lock 32 passes. The lock passage hole 70 is formed by combining large and small U-shaped holes 72 and 74, and a part of the large U-shaped hole 72 is blocked by a shelf 72a connected to the wall surface 24a of the lid member 24. However, the back side and the small U-shaped hole 74 penetrate to the inside of the lid member 24.

If the locking tongue 32a of the lock 32 is made to correspond to the small U-shaped hole 74, the lock 32 can be inserted into the lock passage hole 70 until the bottom surface 32b of the lock 32 comes into contact with the shelf 72a. The lock 32 is operated by operating the lock 32 there.
By rotating a, the locking tongue 32a can be locked to the locking portion 56. Further, if the locking tongue 32a once locked is rotated in the opposite direction, it can be released from the locking portion 56.

The cover member 26 of the restraining body 30 includes a cover member 24
The convex portion 80 is provided at a position corresponding to the connecting portion 68. The rear surface side (the lid member 24 side) of the convex portion 80 is recessed, and the coupling portion 68 can be received therein.
The connecting portion between the covering member 26 and the connecting member 28 is a triangular rib 82
Is reinforced.

The bearing 42 has a bearing plate 84 provided with a bearing groove 83 and a cover 86. The bearing groove 83 is dimensioned to allow the hinge shaft 36 of the shaft body 40 to pass therethrough, and the head 38 of the shaft body 40 can be accommodated between the bearing plate 84 and the cover 86.

Next, a procedure for housing the control device 60 in the board case 20 will be described with reference to FIGS. First,
As shown in FIG. 9, the control device 60 is fixed to the bottom member 22, and the lid member 24 is joined to the bottom member 22 so as to be placed on the bottom member 22. The (two in total) through portions 64 and the corresponding screw portions 48 of the bottom member 22 are connected by one-way screws 50. After tightening this one way screw 50,
The lid member 24 and the bottom member 22 cannot be separated unless the connecting portion 68 is cut with a nipper or the like and the penetrating portion 64 is separated from the cover portion 66.

Next, as shown in FIG.
2 so as to cover the shaft body 40 from the upper side.
3, the hinge shaft 36 is inserted, and the bearing plate 84 and the cover 86
The head 38 is accommodated between them. Then, as shown in FIG. 11, the restraining body 30 is rotated about the hinge shaft 36. At this time, the lock 32 is operated in advance to lock the tongue 3.
2a is located at a position corresponding to the small U-shaped hole 74 of the lock passage hole 70.

When the restraining body 30 is rotated approximately 180 degrees,
As shown in FIG. 12, the cover member 26 is on the cover receiving portion 66, and the connecting portion 68 is received on the rear surface side of the convex portion 80. Finally, the lock 32 is operated to lock the locking tongue 32a with the locking portion 5
6, the locking of the board case 20 is completed.

The board case 20 thus locked
In the above, the lid member 24 and the bottom member 22 are connected by a one-way screw 50, and the cover member 26 covers the through portion 64 to cover and cover the head 50 b of the one-way screw 50, so that the bearing body 42 and the shaft body 40 With the engagement and the lock 32,
The restraining body 30 including the cover member 26 is fixed to the bottom member 22.

When the one-way screw 50 is to be removed in order to open the board case 20, the inhibitor 30 including the cover member 26 must be removed, but the inhibitor 30 is attached to the bottom member 22 as described above. It is fixed and cannot be removed easily. Therefore, it is extremely difficult to remove the one-way screw 50. In addition, the restraining body 30 is
, The act of prying open the board case 20 without removing the one-way screw 50 can be sufficiently prevented. Moreover, in order to remove the restraining body 30, it is necessary to break at least one of the lock 32, the bearing body 42, and the shaft body 40, and it takes time and effort. Therefore, there is an effect of giving up the removal of the restraining body 30.

Further, the bearing body 42 and the shaft body 40
The restraining body 30 is fixed to the bottom member 22 at a total of three points, one point and one point by the lock 32, and the three sides of the lid member 24 are pressed against the bottom member 22 by the pair of covering members 26 and the connecting member 28. Therefore, the resistance to the above-mentioned prying is extremely high, and an action such as unauthorized ROM replacement can be more favorably prevented.

However, at the time of legitimate release such as repair, the lock 32 is operated to remove the restraining body 30, and then the connecting portion 68 is cut with a nipper or the like to cover the through portion 64 with the covering portion 66.
When separated from the board case 20, the board case 20 can be easily opened.
At this time, since the cut-through portion 64 remains on the bottom member 22 side, it is possible to confirm the presence or absence of an improper opening by collating with a repair record or the like.

Further, the four penetrating portions 64 are set as one set,
Two covering members 26 are provided corresponding to each of the sets of the through portions 64, and these covering members 26 are connected to each other by the connecting member 28 to be integrated as the restraining body 30.
For example, compared to the case where one large cover member is used, it is possible to reduce the size of parts and the amount of materials used.

In particular, the planar projection shape of the board case 20 is substantially rectangular, and the through-holes 64 are provided along each of two opposing sides of the rectangle to make two sets of the through-holes 64. Since the connecting member 28 that connects the two covering members 26 corresponding to the through portions 64 of the set is arranged along one of the sides located between the two opposing sides, the through portion 64 is provided.
And the threaded portion 48 can be arranged in a well-balanced manner.

Further, when the cover member 26 covers the through portion 64 in a sealed state, the bearing body 42 and the shaft body 40 cannot be separated from each other.
When the restraining body 30 is swung about 180 degrees from the sealed state, the bearing body 42 and the shaft body 40 can be separated and connected. Therefore, the mounting and removing of the restraining body 30 becomes easy, and the board case 20 is removed. Is easy to assemble.

The embodiments of the present invention have been described with reference to the examples. However, the present invention is not limited to these examples.

[Brief description of the drawings]

FIG. 1 is an overall view of a board case of an embodiment, and FIG.
1 (a) is a plan view, FIG. 1 (b) is a front view, FIG. 1 (c) is a right side view, FIG. 1 (d) is a rear view, FIG. 1 (e) is a left side view,
FIG. 1F is a cross-sectional view along the line AA shown in FIG.

FIG. 2 is an exploded perspective view of the board case of the embodiment.

FIG. 3 is an exploded perspective view of the board case of the embodiment at an angle different from that of FIG. 2 by 90 degrees.

FIG. 4 is a perspective view of the board case of the embodiment.

FIG. 5 is a perspective sectional view taken along line AA shown in FIG.

FIG. 6 is a perspective sectional view of the substrate case of the embodiment at an angle different from that of FIG. 5 by 180 degrees.

FIG. 7 is an exploded perspective view of the state of FIG.

FIG. 8 is an explanatory diagram of a one-way screw used in the embodiment.

FIG. 9 is an explanatory diagram of a procedure for assembling the board case according to the embodiment, showing a state in which the control device is fixed.

FIG. 10 is an explanatory diagram of an assembling procedure of the board case according to the embodiment, and shows a state where a suppressor is mounted.

FIG. 11 is an explanatory diagram of an assembling procedure of the board case according to the embodiment, and shows a state in which the inhibitor is rotated by about 90 degrees.

FIG. 12 is an explanatory diagram of an assembling procedure of the board case according to the embodiment, and shows a state in which the inhibitor is locked.

[Explanation of symbols]

20: board case 22: bottom member 22a: end face
22b ... end face 22c ... long side 24 ... lid member 24a ... wall surface 2
Reference Signs List 6 cover member 28 connecting member 30 inhibitor 32 lock (fixing means, locking mechanism) 32a locking tongue 32b bottom surface 34 mounting hole 36 hinge shaft (fixing means) 38 head (fixing means) 40: Shaft (fixing means) 42: Bearing (bearing)
44 ... groove 46 ... claw 48 ... screwing part 50 ... one way screw (screw member) 50a ... screw shaft part 50b ... head 50c ... driver contact surface 50d ... inclined surface 54 ... hole 56 ... locking part (fixing means, locking Mechanism) 56a: back plate 56b: side plate 56c: ceiling plate
58: Screw receiver 60: Control device 60a: Printed circuit board 60b:
Connector 60c: through hole 60d: notch 64: penetrating part
66 ... cover part 68 ... connecting part 70 ... lock passage hole 72 ... large U-shaped hole 72a ... shelf 74 ... small U-shaped hole 80 ... convex part 8
2 ... triangular rib 83 ... bearing groove (bearing) 84 ... bearing plate (fixing means, bearing) 86 ... cover (fixing means)

Claims (6)

[Claims] 1. A board case configured by connecting a lid member and a bottom member with a screw member and housing a control device of a gaming machine, wherein the lid member penetrates a screw shaft portion of the screw member. A plurality of penetrating portions that do not allow the head to pass through are provided as a set of penetrating portions. The bottom member has a screwing portion for screwing a screw shaft portion of the screw member into the penetrating portion of the lid member. A plurality of board cases are provided corresponding to each other, wherein the cover member and the bottom member are connected by penetrating a screw shaft portion of the screw member through the through portion and screwing into the screw portion. A board comprising: a cover member that covers the head of the screw member by covering the through-hole set; and fixing means for fixing the cover member to one or both of the lid member and the bottom member. Case. 2. The board case according to claim 1, wherein said fixing means includes a locking mechanism for locking said cover member to one or both of said lid member and bottom member. 3. The board case according to claim 1, wherein a plurality of the through-hole sets are provided, a plurality of the cover members are provided corresponding to each of the plurality of the through-hole sets, and the plurality of cover members are connected. A board case, wherein the board case is integrated by being connected to each other by a member. 4. The substrate case according to claim 3, wherein a planar projection shape of the substrate case is substantially rectangular, and the penetrating portion is provided along each of two opposing sides of the rectangle. Two sets are provided, and a connecting member for connecting the two covering members corresponding to the two sets of penetrating portions is arranged along one of the sides located between the two opposing sides. Board case. 5. The board case according to claim 4, wherein a hinge shaft is provided on one of an end of the cover member on a side opposite to the connection member and the bottom member, and the other is provided as a part of the fixing means. A structure in which a bearing for the hinge shaft is provided, the cover member is swingable about the hinge shaft, the locking mechanism is attached to the connecting member, and the connecting member is locked to the bottom member by the locking mechanism. A substrate case characterized in that: 6. The substrate case according to claim 5, wherein the hinge shaft and the bearing cannot be separated from each other in a sealed state in which the cover member covers the through-hole set, and the cover member is removed from the sealed state. The substrate case, wherein the hinge shaft and the bearing are separable and connectable when the hinge is swung more than a set angle.