JPS6233877Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a combination code lock, and more specifically, to an improvement of a code lock that locks the lock piece in a closed state against violent punching and unlocking of the code plate.
The purpose is to provide an excellent lock that can be reliably and quickly locked against acts of violent vandalism.

FIG. 5 shows a conventional product, in which the abutment flange 22 that follows the base plate 20 is located at the tip of the second lock piece 21, that is, beyond the stopper 23 of the first lock piece 24, and at the dial shaft 25. The board 20 is provided on the side of the first lock piece 24 that is farthest from the code plate 26 that is coaxially mounted, and therefore the board 20 that has been subjected to violent sabotage is removed from the board at the position of the code plate 26. Even when the surface is distorted in the back direction, the substrate portion on the first lock piece 24 side is not distorted in the back direction, but moves in the front direction, and cannot function as the second lock piece 21. There are no structural defects. This means that violent sabotage pushes the dial shaft 25 backwards with a hammer or the like, distorts the board 20 backwards, and destroys the code plate 26 and dial shaft 25, which are the life of the lock.
This is because the intention is to remove the interlocking relationship with the first lock piece 24 and make the first lock piece 24 free, and no countermeasures have been taken for this point.

An example of implementing the present invention will be described in detail below with reference to the drawings.

The lock main body A includes a lock mechanism part 4 consisting of an actuator 9 and a lock piece 10 in a lock case 1, and a code plate 3 is housed therein in a predetermined interlocking relationship with a cover plate 2, and a dial 11.
The code plate 3 is rotated through the dial shaft 12, and the lock piece 10 is made to protrude and retract from the opening 13 of the lock case 1, so that the lock can be opened and closed in a predetermined manner. This cover plate 2 is attached to support pieces 14, 14 stamped and molded approximately at the center of the left and right side walls 1a, 1a of the lock case 1, with screws 15, 15. Note that the supporting pieces 14, 14 are not limited to the form shown in the drawings, and may be freely formed at the four corners.

Further, the lock 1 has a shaft 6 fixed to the side of the code plate 3 on the left side wall 1a by caulking, and a second lock piece 5 is pivotally attached to the same shaft 6. This second lock piece 5 is made elastically movable in the direction of the cover plate 2 by means of a spring 16 with a pivot point, that is, a shaft 6 as a fulcrum, and a stopper of the first lock piece 10 is provided at the tip bordering on the support piece 13. 8 is provided, and on the other hand, a protruding flange 7 for contacting the cover plate 2 is provided on the base end side edge beside the code plate 3. Thereby, the second lock piece 5 is attached to the cover plate 2 on the back side of the lock case 1.
In the normal state where the cover plate 2 is installed in a specified manner,
The abutting collar 7 comes into resilient contact with the stopper 8, and the stopper 8 does not hinder the movement of the lock piece 10 to move in and out, and ensures the opening/closing operation by the dial 11 without any hindrance. In the closed state, when the cover plate 2 falls off or is distorted toward the back of the lock 1, the second lock piece 5 is moved by the spring 16.
It was fired by and slid towards the back, and Stepper 8
is engaged with the first lock piece 10, thereby locking the same lock piece 10 so that it cannot be unlocked.

In addition, the stopper 8 of the second lock piece 5 may be formed so as to prevent rotation of the actuator 9, or the stopper 8 of the second lock piece 5
Even if both the actuator 9 and the actuator 9 are formed to be lockable, this does not change the gist of the present invention in any way.

As described above, the present invention is configured so that the sliding angle of the abutment flange with the pivot point as the fulcrum is expanded to the same angle as the stopper. Even if an attempt was made to remove the lock, the abutting flange would catch the slight movement of the board and cause the stopper to move in an enlarged manner, thereby locking the lock piece mechanism in the closed state.

The abutment flange is placed next to the code plate, and at the same time the back plate at the code plate position is unduly distorted, the lock piece mechanism is immediately locked in the closed state, causing destruction. It has the characteristic of operating sensitively to machining.

In particular, in an embodiment where the screw positions of the cover plate for the lock are specified at two places on the left and right of the center, one and a half boards on the code plate side are distorted in the rear direction with the screw position as a boundary, and even in this case, the butt on the side of the code plate The tsuba operates by accurately capturing the movement.

Incidentally, in the conventional type in which the abutment collar is located on the side of the lock mechanism section with the screw position as the boundary, the other half of the cover plate does not move due to the reaction force acting in the front direction, and cannot be locked.

As described above, it is possible to provide a lock equipped with a second lock piece that is extremely effective against violent sabotage, and achieve the intended purpose.

[Brief explanation of drawings]

FIG. 1 is a rear view, partially cut away, showing an example of the implementation of the dial code lock of the present invention. FIG. 2 is a longitudinal sectional view taken along the - line. FIG. 3 is a perspective view of the main parts. FIG. 4 is an operational diagram of the locked state in which the first lock piece is locked and fixed by the second lock piece. FIG. 5 is an exploded perspective view of a conventional product. It is. In the figure, 1 is a lock case, 2 is a cover plate, 3 is a code plate, 4 is a lock piece mechanism, 5 is a second lock piece, 6 is a pivot part, 7 is a butting collar, and 8 is a stopper.

Claims (1)

[Scope of utility model registration request] In a dial code lock, which is provided with a second lock piece inside the lock case, which locks the lock piece mechanism excluding the code plate in a closed state as the cover plate moves toward the rear, the second lock piece is attached to its pivot point. The attachment part is set in the lock part next to the code plate, and is biased by a spring in the direction of the cover plate so that it can swing freely in the same direction, and the stopper of the lock mechanism part is attached to the tip of the second lock piece. This dial code lock is provided with a stopper and an abutment flange between the stopper and the pivot portion, and the abutment flange abuts on a cover plate portion near the code plate.