JP2862842B2 - Locking structure for locking nuts for locks - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a nut locking structure which prevents a nut fixedly fastened to a case of various devices from being locked by a continuous vibration or the like.

[0002]

2. Description of the Related Art In a lock installed in a vending machine installed in a street or the like, a nut may be gradually loosened due to continuous vibration and impact. Various countermeasures have conventionally been taken to prevent the nut from loosening, but if no extra space is left inside the case, the loosening prevention process may not be able to be executed.

[0003]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a nut locking structure that can easily and accurately prevent locking even when there is no room for locking processing inside the case. That is.

[0004]

Means for Solving the Problems Hereinafter, with reference to the reference numerals in the accompanying drawings, in the locking structure of the present invention, the fixing body 5 of the lock 4 is attached to the mounting hole 3 of the front wall 2 of the case 1. Fitted from the front side, screw cylinder part 5a of fixed body 5
A hexagonal nut 7 is fitted to the head body 5, the front wall 2 is sandwiched between the head 5 b of the fixed main body 5 and the hexagonal nut 7, and a part of the cover plate 8 on the side surface of the case 1 is cut and raised to the back side to prevent the tongue piece. 9
The cover plate 8 is fastened and fixed to the case 1 with screws 6 in a state where the flat back surface 9a of the stopping tongue piece 9 is in contact with one side surface 7a of the hexagon nut 7.

When the lock 4 is fastened and fixed to the front wall 2 of the case 1, it is desirable that the hexagon nut 7 be fastened and placed so that one side surface 7 a of the hexagon nut 7 is parallel to the stopping tongue piece 9 of the cover plate 8. Even if they are not parallel, cover plate 8
At the stage where the hexagonal nut 7 is additionally rotated by being pressed by the stopping tongue pieces 9, finally,
The back surface 9a of the hex nut 7 and one side surface 7a of the hexagon nut 7 are in close contact with each other.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the illustrated embodiment, a stop tongue piece 9 is shown.
The back surface 9a is formed to be elongated so that the back surface 9a contacts the entire length of one side surface 7a of the hexagon nut 7, and the back surface 9a of the stopping tongue piece 9 is arranged in parallel with the back surface 8a of the cover plate 8. The cover plate 8 is fastened and fixed to the case 1 by two screws 6. The head 5 of the fixed body 5 of the lock 4 is provided on the front wall 2 of the case 1.
A circular concave portion 2a is provided for embedding b, and the mounting hole 3 is provided at the center of the concave portion 2a.

[0007]

As described above, in the anti-loosening structure of the present invention, the stopper tongue piece 9 is cut and raised on the cover plate 8 on the side surface of the case 1 to the rear side, and the stopper tongue piece 9 is attached to one side surface 7a of the hexagon nut 7. With the back surface 9a in contact, the cover plate 8 is
Since there is no loosening work to be performed inside the case 1 and no bulky loosening prevention member is added, there is no room left inside the case 1. However, it is possible to simply and accurately prevent the hexagon nut 7 from loosening, and it is possible to reliably prevent the lock 4 from loosening or falling off due to continuous vibration or impact.

[Brief description of the drawings]

FIG. 1 is a left side view of a case in which a lock is fastened and fixed by applying a locking mechanism according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a sectional view taken along line BB of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Case 2 Front wall of case 3 Mounting hole 4 Lock 5 Locking body for lock 6 Screw for fixing cover plate 7 Hex nut for fixing lock 8 Cover plate 9 Stop tongue piece

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) E05B 9/08 F16B 23/00-43/02

Claims (1)

(57) [Claims] 1. A fixed body 5 of a lock 4 is fitted into a mounting hole 3 of a front wall 2 of a case 1 from the front side, and a hexagon nut 7 is fitted into a screw cylinder 5a of the fixed body 5, and a head of the fixed body 5 is formed. The front wall portion 2 is sandwiched between the portion 5b and the hexagon nut 7,
A part of the cover plate 8 on the side surface of the case 1 is cut and raised to the back side to provide the stopping tongue 9, and the flat back surface 9 a of the stopping tongue 9 is brought into contact with one side surface 7 a of the hexagon nut 7. A locking structure in which a nut for tightening and fixing the lock is secured by fastening the cover plate 8 to the case 1 with screws 6.