JP3611209B2 - Control board box - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a control board box that contains a control board and is sealed, and more particularly, to a control board box that contains a control element such as a ROM.
[0002]
[Prior art]
Conventionally, what is shown in FIG. 10 is known as this kind of control board box in a pachinko machine or the like. The pair of shallow dish-shaped metal upper case 1 and metal lower case 2 can form an integral box-shaped case 3 with the opening surfaces facing each other, and the sealing paper 4 is bonded to the side surface in a combined state. Can be sealed. A control board 5 such as a pachinko machine can be accommodated inside the case 3, and a ROM 7 can be placed on the control board 5 via a socket 6. This ROM 7 stores control programs and tables for pachinko machines. On the other hand, the case 3 is formed with an opening 3 b for drawing out the cable 5 a led out from the heat radiating hole 3 a and the control board 5.
[0003]
In such a configuration, the ROM 7 is placed on the control board 5, and the control board 5 is sandwiched and accommodated between the metal upper case 1 and the metal lower case 2 so that the cable 5a passes through the opening 3b. After accommodation, screw with a screw (not shown), and finally seal paper.
[0004]
[Problems to be solved by the invention]
In the above-described conventional control board box, the case 3 itself is prevented from being opened with the sealing paper 4. However, there is a problem that a gap may be plowed out, or only the ROM 7 may be taken out using the opening 3b, and a newly rewritten ROM 7 may be attached to perform fraud.
[0005]
The present invention has been made in view of the above problems, and an object of the present invention is to provide a control board box capable of preventing the ROM from being changed illegally.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1 is directed to a control board on which a control element is detachably mounted, a resin case that accommodates and seals the control board, and the control board includes the control board. In order to prevent the desorption of the control element, a desorption prevention mechanism comprising a cylindrical portion formed to extend from the ceiling surface on the mounting surface side of the control element in the case so as to surround the entire circumference of the control element. It is as a configuration provided.
[0007]
According to the present invention having such a configuration, after the control element is detachably mounted on the control board, the control board is accommodated in the case and sealed after the accommodation. After sealing, even if an attempt is made to remove the control element by opening the case or widening the gap without breaking the seal, the desorption prevention mechanism prevents the control element from being detached from the control board. More specifically, the desorption prevention mechanism is formed from a cylindrical portion that extends from the ceiling surface on the mounting surface side of the control element in the resin case so as to surround the entire circumference of the control element. Thus, by covering the periphery of the control element, contact for removal is prevented.
[0008]
The control board only needs to be mounted so that a control element such as a so-called ROM can be attached and detached, and may be a general printed circuit board, or an electric device itself that attaches the control element to the outer peripheral surface. However, it corresponds to a control board in a broad sense. That is, what is equipped with the control element is not limited to a plate-like body such as a printed board. Of course, the invention is not limited to the ROM in the narrow sense, and may be another element that stores a control program or the like, or may be an arithmetic element such as a CPU incorporating a ROM. In some cases, it may be a jumper switch for changing the parameters of the control program. Also, the configuration for detachably mounting can be appropriately modified, such as a normal plug-in type socket or a surface contact connection.
[0009]
The desorption prevention mechanism only needs to be able to prevent desorption of the control element after such sealing. For this reason, as another example, it may be possible to prevent the control element from being detached by a single mechanism, or may be a part of the case or the control board, or jointly with the case or the control board to prevent the removal. It may be what you do. Here, only one of removal or attachment of the control element may be prevented. Alternatively, the control element may be fixed to prevent direct attachment / detachment.
[0010]
【The invention's effect】
As described above, the present invention prevents the control element from being detached and attached separately from the case sealing, so that it is possible to effectively prevent fraud such as replacing the control element without breaking the seal. A control board box can be provided.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of a control board box according to an embodiment of the present invention.
[0012]
In the figure, a printed circuit board 10 serving as a control board has various electronic elements arranged on the surface, and one end of a cable 11 connected to an external device is also connected. A CPU for controlling a gaming machine such as a pachinko machine is also mounted on the printed circuit board 10. A control program executed by the CPU is written in the ROM 12, and the ROM 12 itself is connected via the socket 13. Mounted on the printed circuit board 10. Since the ROM 12 is connected via the socket 13, the ROM 12 can be attached and detached as necessary. The ROM 12 can be replaced as appropriate when checking external devices, in the case of a model change, or in the case of legal revision. Yes. The socket 13 has a configuration in which the ROM 12 is simply pushed from above, but it can also be easily attached / detached by operating a lever or the like. In addition to the control program, the ROM 12 stores control data for a random number table and a conversion table. That is, in this embodiment, this ROM 12 constitutes a control element, and the printed circuit board 10 constitutes a control board.
[0013]
The case 20 is composed of a pair of shallow upper metal plates 21 and a lower metal plate 22, which are joined together with their opening surfaces facing each other to form an integral box case. Recesses 23a and 23b are formed on one side surface of both cases 21 and 22 in the longitudinal direction, and a long opening 23 is formed adjacent to each other to allow communication between the inside and the outside. The cable 11 is led out through the long opening 23. In addition, a notch 22a is formed on one side surface of the metal lower case 22 from the opening end, and a convex portion 21a protruding corresponding to the notch 22a is formed on the metal upper case 21. When the two cases 21 and 22 are joined together, the convex portion 21a enters the notch 22a to form a side surface. In this way, the convex portion 21a protruding from the metal upper case 21 side enters the notch 22a formed on the metal lower case 22 side to form a side surface, whereby the sealing paper 24 is convex in the longitudinal direction. It will suffice if it intersects with the part 21a. On the other hand, when sticking to the other alignment in the metal upper case 21 and the metal lower case 22, it must cross | intersect in the transversal direction in the sealing paper 24, and work must be careful. Efficiency drops.
[0014]
The printed circuit board 10 is accommodated inside so as to be sandwiched between the pair of metal upper case 21 and metal lower case 22. At this time, the upper surface of the printed circuit board 10 and the inner peripheral surface of the metal upper case 21 A rectangular cylindrical frame body 40 having an inner diameter that encloses the socket 13 is mounted from above the socket 13. FIG. 2 shows a state in which the printed circuit board 10 is accommodated in the metal upper case 21 and the metal lower case 22 while the frame body 40 is attached. As shown in the figure, since the ROM 12 is mounted around the socket 13, the ROM 12 is surrounded on all sides by a frame body 40, while the lower surface is surrounded by the socket 13 and the upper surface is surrounded by the ceiling surface of the metal upper case 21. Therefore, even if a metal fitting or the like is inserted from the long opening 23 and is inserted between the socket 13 and the ROM 12, the frame body 40 prevents the insertion. Of course, it cannot be removed from the socket 13 side of the lower surface, and the metal upper case 21 on the upper surface cannot be opened. As a result, it is possible to prevent the ROM 12 from being removed while the case 20 is sealed. That is, in the present embodiment, the frame body 40 constitutes a desorption prevention mechanism.
[0015]
As long as the frame 40 surrounds the four sides of the ROM 12 and can be prevented from being detached, the frame 40 may be surrounded by a wire net or a net. Further, if the surrounding control element generates heat, a heat radiating hole can be formed. Further, the frame body 40 is simply mounted around the socket 13, but it is fixed by fitting with the socket 13 so as not to be easily removed or fitting with the printed circuit board 10. It can also be like that. When the frame body 40 is made of metal, it may be fixed to the printed circuit board 10 by soldering.
[0016]
Next, the operation of the present embodiment configured as described above will be described. The ROM 12 is mounted on the socket 13 on the printed circuit board 10, and the frame body 40 is mounted around the ROM 12. In this state, the printed circuit board 10 is sandwiched from above and below by a metal upper case 21 and a metal lower case 22, and the cable 11 is pulled out from the long opening 23 and screwed with a bolt or the like (not shown). Seal. In this state, even if a screwdriver or the like is inserted through the long opening 23, it cannot be pushed under the ROM 12 surrounded by the frame body 40, and the ROM 12 cannot be removed. Of course, since it is enclosed in this way, the ROM 12 itself cannot be removed or replaced with a rewritten ROM 12.
[0017]
In the present embodiment, a frame 40 having an inner diameter surrounding the socket 13 and having a length between the upper surface of the printed circuit board 10 and the ceiling surface of the metal upper case 21 is used as a desorption prevention mechanism. It can also be configured with other shapes. For example, the control board box shown in FIG. 3 includes a case 20 including a resin upper case 25 and a lower case 26, and the frame body 40 is directed from the ceiling surface side of the upper case 25 toward the periphery of the socket 13. A cylindrical portion 41 having the same shape as that is extended.
[0018]
Even in such a configuration, if the printed circuit board 10 on which the ROM 12 is placed is accommodated so as to be sandwiched between the upper case 25 and the lower case 26, the cylindrical portion 41 surrounds the socket 13 so that the ROM 12 cannot be removed. Can do. In the present embodiment, the upper case 25 is made of resin, but the case of the metal upper case 21 is usually provided with a transparent lid so that the inside can be seen. The same cylinder part 41 can also be formed.
[0019]
Further, in the case shown in FIG. 4, an enclosing wall 13a is formed by extending the peripheral edge of the socket 13 upward in a cylindrical shape, and if the ROM 12 is attached to the socket 13, the enclosing wall is formed as shown in FIG. The periphery of the ROM 12 can be shielded by the wall 13a. In this case, the ROM 12 can be detached from above, but since the upper part is covered with the metal upper case 21, the removal of the ROM 12 can be substantially prevented. Until now, the ROM 12 is surrounded by a so-called barrier to prevent detachment. However, as long as the ROM 12 can be removed only upward from the socket 13, As shown in FIGS. 6 and 7, convex portions 42 may be formed on the ceiling surface of the upper case 27 made of resin. In this way, the convex portion 42 abuts on the upper surface of the ROM 12 when sandwiched between the upper case 27 and the lower case 28, so that the ROM 12 cannot be extracted upward, and the ROM 12 is sufficiently prevented from being detached. it can. In other words, a stopper that does not move in the extraction direction is employed to prevent the removal of the ROM 12 rather than completely surrounding the ROM 12.
[0020]
8 and 9, the socket 13 and the ROM 12 are wound around the band 43, in other words, the ROM 12 is bound to prevent detachment. As described above, when the ROM 12 storing the control program and the like is detachably mounted on the printed circuit board 10 via the socket 13, the frame body 40, the cylinder portion 41, and the convex portion 42. In addition, by preventing the ROM 12 from being attached / detached separately from the sealing of the case 20 by the attachment / detachment prevention mechanism such as the band 43, fraud due to replacement of the ROM 12 can be effectively prevented.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a control board box according to an embodiment of the present invention.
FIG. 2 is a partially cutaway side view of the control board box.
FIG. 3 is an exploded perspective view of a control board box according to a modified example.
FIG. 4 is a perspective view of a socket employing a desorption prevention mechanism.
FIG. 5 is a side view showing a state in which a ROM is mounted on the socket.
FIG. 6 is an exploded perspective view of a control board box according to a modified example.
FIG. 7 is a partially cutaway side view of the control board box.
FIG. 8 is a perspective view showing a state in which a band adopted as a desorption prevention mechanism is mounted.
FIG. 9 is a perspective view when the band is attached.
FIG. 10 is a perspective view of a conventional control board box.
[Explanation of symbols]
10 ... Printed circuit board 12 ... ROM
DESCRIPTION OF SYMBOLS 13 ... Socket 13a ... Enclosing wall 20 ... Case 21 ... Metal upper case 22 ... Metal lower case 25 ... Upper case 26 ... Lower case 27 ... Upper case 28 ... Lower case 40 ... Frame 41 ... Tube part 42 ... Convex part 43 ... Band

Claims (1)

A control board on which the control element is detachably mounted;
A resin case that contains and seals this control board;
In order to prevent detachment of the control element on the control board, from a cylindrical portion formed to extend from the ceiling surface on the mounting surface side of the control element in the case so as to surround the entire circumference of the control element A control board box comprising: a desorption prevention mechanism.

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