JPH11188166A - Locking body and box locking mechanism using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a locking body for not opening a lid body even when the locking body housing part of a substrate housing box is destroyed from a back surface and a box locking mechanism using it. SOLUTION: This locking body sprung by an elastic means 6 is housed in the locking body housing part 9 formed at the side part of the substrate housing box 8. The locking body is composed of a locking pin 1 to be fitted to the locking pin engaging hole 11 of the lid body 10 and a locking pawl 2 to be projected to an outer side from the head part 1a of the locking pin 1 and engaged with the upper edge of the locking body housing part 9 at the time of closing the lid body 10. Even when the bottom surface of the locking body housing part 9 is destroyed, since the tip part 15 of the locking pawl 2 is spread to the outer side and engaged with the upper edge of the locking body housing part 9, the locking body can not be taken out to a lower part and the lid body 10 can not be opened.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a locking member for locking a board storage box containing a circuit board of a pachinko machine and a box locking mechanism using the same.

[0002]

2. Description of the Related Art Since a program for determining a winning rate of a pachinko machine is stored in a ROM, there has been a case in which a legitimate ROM is illegally replaced with a remodeled ROM and an illegal payout is obtained. For this reason, recently, a circuit board including a ROM has been housed in a board housing box so that the ROM cannot be replaced unless the lid of the box is destroyed. Many patents have already been filed.

Many conventional box locking mechanisms of this type are configured such that when a locking pin set in a locking body storage portion of a board storage box closes the lid, the locking pin protrudes upward by elastic means and is closed. The lid is engaged with the locking pin engagement hole on the back surface, and thereafter the lid is not opened unless the lid is broken and the locking pin is pulled out. However, the conventional box locking mechanism breaks the locking body storage portion of the board storage box from the back surface, pulls out the locking pin downward, opens the lid, and opens the inside R.
It proved to be ineffective for the new trick of replacing OM.

[0004]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems and provides a lock body in which the lid is not opened even if the lock body storage portion of the substrate storage box is broken from the back surface. And a box locking mechanism using the same.

[0005]

According to a first aspect of the present invention, there is provided a lock body for locking a lid of a board storage box in which a circuit board is stored. A locking pin resiliently fitted by a resilient means and fitted into a locking pin engaging hole of the lid, and a locking body housing which protrudes outward from a head of the locking pin when the lid is closed. And a locking claw engaged with the upper edge of the portion. According to a second aspect of the present invention, there is provided a box locking mechanism having a bottomed cylindrical locking body storage portion formed on a side portion of a substrate storage box.
And a locking pin engaging hole is formed on the back surface of a lid that is slid and fitted into the substrate storage box.

According to the present invention, the locking claw is engaged with the upper edge of the locking body storage section even if the locking body storage section of the board storage box is broken from the back surface. It cannot be pulled down, and therefore the locking pin on top cannot be pulled down. For this reason, pulling out of the locking pin can be performed only from the lid side,
It is possible to cope with a new approach of destroying the lock body storage section from the back surface and illegally replacing the ROM.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below. FIG. 1 is an exploded perspective view of a lock body of the present invention, and FIG. 2 is a plan view thereof and a cross-sectional view of each part. 3 to 5
FIG. 3 is a sectional view of a main part of a box locking mechanism using the locking body of the present invention.

As shown in these figures, the locking body of the present invention comprises a locking pin 1 and a locking claw 2. The locking pin 1 has a cylindrical shape, and has deep vertical grooves 3 formed on both sides except the head 1a. In the lower part of this vertical groove 3 is a step 4
Are formed. Further, a round hole 5 is formed from the bottom surface of the locking pin 1, and an elastic means 6 is accommodated therein. At the center of the round hole 5, a projection 7 for inserting and fixing the upper part of the elastic means 6 is provided in a protruding manner.

As shown in FIG. 3, the lock body of the present invention is housed in a bottomed cylindrical lock body storage section 9 formed on the side of the substrate storage box 8, and is locked. When the lower end of the elastic means 6 is in contact with the inner bottom surface of the body housing portion 9, the locking pin 1 is always resiliently pushed upward. For this reason,
As shown in FIG. 5, when the lid 10 is closed, the head 1 a of the locking pin 1 fits into a locking pin engaging hole 11 formed on the back surface of the lid 10 and slides the lid 10. Can be locked so that you can not.

In this embodiment, the locking claws 2 are fitted into the vertical grooves 3 on both side surfaces of the locking pin 1 from below, and as shown in FIG. Two flexible portions 13 are integrally formed at both ends of an annular portion 12 having the same outer diameter, thereby forming a U-shape as a whole. Annular part 1
The center hole 2 is for passing the elastic means 6.

In the middle of the two flexible portions 13, a locking pin 1 is provided.
A holding claw 14 is provided so as to engage with the step portion 4 formed in the vertical groove 3. The upper surface of the holding claw 14 is a slope,
Since the lower surface is perpendicular to the inner surface of the flexible portion 13, when the locking claw 2 is fitted into the vertical groove 3 on each side surface of the locking pin 1 from below, the flexible portion 13 moves outward. While expanding, the holding claws 14 engage with the step portion 4 to be integrated.

The distal ends 15 of the two flexible portions 13 of the locking claw 2 protrude outward from the side surfaces of the locking pin 1 when no external force is applied. It can fit inside.

The box locking mechanism according to a second aspect of the present invention is such that the above-mentioned lock is stored in a bottomed cylindrical lock body storage section 9 formed on the side of the substrate storage box 8 as shown in FIGS. It is one that houses a stationary body. As described above, since the locking claw 2 projects outside the side surface of the locking pin 1, the locking claw 2 is pushed from the side into the vertical groove 3 below the head 1a of the locking pin 1. Then, the lock body is stored in the lock body storage unit 9. In this box locking mechanism, the lid 10 must be slid from a specific direction indicated by an arrow in FIG. Therefore, as shown in FIG. 4, the lid 10 is closed while pushing the locking body against the elastic means 6.

When the lid 10 is completely closed in this manner, the locking body is pushed up by the elastic means 6, and the head 1a of the locking pin 1 engages with the locking pin formed on the back surface of the lid 10. Fit into hole 11. At the same time, the locking claw 2 is also pushed up, so that the tip end portion 15 expands outward and engages with the upper edge of the lock body storage portion 9, and projects laterally beyond the head 1 a of the lock pin 1. In this state, the locking pin 1 can no longer be pushed down. As described above, the lid 10 is a slide type, but since the head 1a of the locking pin 1 locks the slide of the lid 10,
After that, unless the lock body cover 16 formed on the lid body 10 is destroyed and the lock body is removed from the lock body storage part 9, the lid body 10 cannot be opened.

Although the elastic means 6 can be removed even if a hole is made in the bottom surface of the lock body storage section 9 with a drill or the like from the back surface of the board, the distal end 15 of the locking claw 2 can be locked. Since it is engaged with the upper edge of the part 9, the lock body cannot be taken out downward. In addition, since the lid 10 is provided, it is of course impossible to take out the locking body upward. Therefore, the box locking mechanism of the present invention has an effect that the lock of the lid 10 is not broken even if the locked body storage portion 9 is broken from the back surface.

At the time of inspection by the police after the shipment from the manufacturer, the lock body cover 16 formed on the lid 10 is broken, the lock body is pulled out from the lock body housing 9, and the inspection is performed. After the end, the lock body is moved to another lock body storage section 9,
The lid 10 may be closed again as described above.

[0017]

As described above, according to the present invention, the lid can be securely locked, and the lid can be opened even if the lock body storage portion of the board storage box is broken from the back. Can not. For this reason, R
OM has the advantage that it cannot be exchanged illegally.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a lock body of the present invention.

FIG. 2 is a plan view of the lock body of the present invention and a cross-sectional view of each part.

FIG. 3 is a sectional view of a main part of the box locking mechanism of the present invention, showing a state where a lid is opened.

FIG. 4 is a cross-sectional view showing a state where a lid is to be closed.

FIG. 5 is a sectional view showing a state in which a lid is closed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Locking pin 1a Head of locking pin 2 Locking claw 3 Vertical groove 4 Step part 5 Round hole 6 Elastic means 7 Projection 8 Board storage box 9 Lock body storage part 10 Cover 11 Locking pin engaging hole 12 Annular part 13 Flexible part 14 Holding claw 15 Tip part 16 Lock body cover

────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] April 10, 1998

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0012

[Correction method] Change

[Correction contents]

The distal ends 15 of the two flexible portions 13 of the locking claw 2 protrude outward from the side surfaces of the locking pin 1 when no external force is applied. It can fit inside. Shown in drawing
The tip 15 of the locking claw 2 is tilted downward so that
And the upper edge of the lock body storage section 9 corresponds to this.
It is preferable to form a recess to secure the engagement between the two.
No.

Claims (2)

[Claims] 1. A locking body for locking a lid of a board storage box in which a circuit board is stored. The locking body is resiliently elastically fitted and fits into a locking pin engaging hole of the lid. A locking body comprising: a locking pin to be inserted; and a locking claw that protrudes outward from the head of the locking pin when the lid is closed and engages with an upper edge of the locking body housing portion. 2. The lock body according to claim 1 is stored in a bottomed cylindrical lock body storage portion formed on a side portion of the board storage box, and is slid into the board storage box. A box locking mechanism, wherein a locking pin engagement hole is formed on the back surface of the lid to be fitted.