JP2000352228A - Unlocking prevention device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the unlocking by fobidding the movement of a key at room side in interlocking with a keyseat by providing an internal structure of the key at room side movable in interlocking with the keyseat, with a hollow, and inserting a bar of which the movement is controlled in the hollow. SOLUTION: The inside of a key at room side movable in interlocking with a keyseat, is provided with a hollow, and stoppers are mounted at both sides of a slidable bar. The slidable bar having the shape and a size corresponding to the hollow is mounted with a cover for preventing the falling-off and rotation of the bar in such manner that the hollow and the slidable bar can be smoothly slid. In use, the key at room side movable in interlocking with the keyseat is locked, and the movement of the slidable bar is controlled by the falling-off and rotation prevention cover by sliding the slidable bar and inserting the same into the hollow of the key at room side, as a result, the movement of the key at room side can be forbidden. Thereby the unlocking by a person possessing the key or a person having the special unlocking technique can be prevented, that is, the device is very useful for preventing the crimes by a person who illegally gets the key, a thief and the like.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the prevention of unlocking of a key which prevents the movement of a key in a room which moves in conjunction with a keyhole and prevents unlocking through a keyhole.

[0002]

2. Description of the Related Art Conventionally, it is possible to move a room-side key that moves in conjunction with a keyhole by using a key or a special unlocking technique.
It was impossible to prevent the keys on the room side from moving.

[0003]

Heretofore, there have been the following drawbacks. B. Anyone who has the key can unlock the lock even if he or she does not want to have the key. B) Persons with special unlocking technology were able to unlock themselves. The present invention has been made to solve the above drawbacks.

[0004]

[MEANS FOR SOLVING THE PROBLEMS] The movement of the key on the room side which moves in conjunction with the keyhole is prevented.

[0005]

Embodiments of the present invention will be described below. B. A hollow (2) is provided inside the room-side key (1) that moves in conjunction with the keyhole. (B) Stoppers (5) are provided on both sides of the sliding rod (3) to prevent the rod from falling off. C. Sliding rod (3) according to hollow form and size
Hollow (2) with cover (4)
And slide bar (3) so that they can slide smoothly. D. The fall-off prevention cover (4) has a hollow structure, and controls the movement of the slide rod (3) when it is inserted into the hollow (2). The present invention has the above configuration. When the present invention is used, unlocking is prevented in the following manner simply by attaching a sliding rod to the hollow of the room-side key that moves in conjunction with the keyhole so as to slide smoothly. Lock the room-side key (1) that moves in conjunction with the keyhole, slide the slide bar (3), and insert it into the hollow (2) of the room-side key (1). It is controlled by the anti-rotation cover (4), and as a result, the movement of the key (1) on the room side can be made impossible, so that it is not unlocked through the keyhole. The unlocking prevention function is released by sliding the slide bar (3) and pulling it out of the hollow (2).

[0006]

By using the present invention, the movement of the key in the room, which moves in conjunction with the keyhole, can be made impossible via the keyhole. Can be prevented from unlocking. That is, it is extremely significant for crime prevention against persons who have obtained the key in an illegal manner, thieves, and the like.

[Brief description of the drawings]

FIG. 1 is a perspective view of the present invention.

FIG. 2 is an exploded perspective view of the present invention.

FIG. 3 is a perspective view showing a use state of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 The key of the room side which moves according to a keyhole 2 Hollow 3 Sliding rod 4 Fall-off prevention cover 5 Stopper

Claims (1)

[Claims] The interior of the room-side key that moves in conjunction with the keyhole is made hollow, and a rod whose movement is controlled is inserted into the hollow to prevent the movement of the room-side key. Unlock prevention device that can prevent key release.