CN202945878U

CN202945878U - Door lock anti-theft non-return device

Info

Publication number: CN202945878U
Application number: CN 201220652166
Authority: CN
Inventors: 刘法军
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-12-03
Filing date: 2012-12-03
Publication date: 2013-05-22
Anticipated expiration: 2022-12-03

Abstract

The utility mode provides a door lock anti-theft non-return device to solve the problem that the existing mechanical door lock is simple in structure and poor in anti-theft effect and relates to the field of an anti-theft lock. The door lock anti-theft non-return device comprises a lock body and a lock tongue inserted into the lock body. The lock tongue is meshed with a lock cylinder arranged in the lock body. The door lock anti-theft non-return device is characterized in that a rotatable non-return part is further arranged in the lock body, and a non-return groove which matches with the non-return part is arranged in the middle of the lock tongue. Due to the fact that the non-return device is additionally arranged in the existing door lock, the door lock is still efficacious under the condition of damage of the lock cylinder. The door lock anti-theft non-return device has the advantages of being simple in structure and design, low in manufacturing cost, and convenient and efficient to use.

Description

The antitheft check device of door lock

Technical field

The utility model relates to the theftproof lock field, relates in particular to the antitheft check device of a kind of door lock.

Background technology

Mechanical lock generally comprises lock body, lock core and dead bolt.Present existing door lock does not generally all arrange antitheft check device, especially rolling-gate, in actual life; the thief often can utilize boosting-rod or other technology unlocking instrument breaking outdoors fast lock core; the dead bolt of door lock is retracted or ineffective, then open rolling-gate, steal.

The utility model content

The purpose of this utility model is to provide a kind of door lock antitheft check device, to solve the poor problem of mechanical door lock anti-theft effect simple in structure at present.

Technical problem to be solved in the utility model realizes by the following technical solutions:

The antitheft check device of a kind of door lock, comprise lock body and insert the interior dead bolt of lock body, dead bolt and the lock core engagement that is arranged in lock body, it is characterized in that: also be provided with rotating retaining element in described lock body, described dead bolt middle part is provided with the stop-return slot with the retaining element coupling, the stop-return slot that arranges on retaining element and dead bolt coordinates can be locked with dead bolt, and the thief is in the situation that destroyed lock core, and door lock still can not lose efficacy.

Described retaining element is arranged in lock body by rotating shaft, and retaining element rotates centered by rotating shaft.

Described retaining element comprises protuberance and the locked planar portions of releasing of locked dead bolt, and protuberance sticks in stop-return slot, can dead bolt is locked; Rotate retaining element, make protuberance screw out stop-return slot, can remove lockedly, dead bolt can free-extension.

The utility model has been set up check device in existing door lock, can realize that in the situation that lock core is destroyed, door lock still can not lose efficacy; And this check device structure design is simple, and low cost of manufacture is easy to use, quick.

Description of drawings

Fig. 1 is the structural representation of the utility model locking state;

Fig. 2 is the structural representation of the utility model released state.

The specific embodiment

For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with specific embodiments and the drawings, further set forth the utility model.

as Fig. 1, shown in Figure 2, the antitheft check device of a kind of door lock, comprise lock body 6 and insert the interior dead bolt 3 of lock body 6, dead bolt 3 and lock core 7 engagements that are arranged in lock body 6, also be provided with rotating retaining element 4 in lock body 6, dead bolt 3 middle parts are provided with the stop-return slot 8 with retaining element 4 couplings, the stop-return slot 8 that arranges on retaining element 4 and dead bolt 3 coordinates can be locked with dead bolt 3, the thief is in the situation that destroyed lock core 7, door lock still can not lose efficacy, retaining element 4 is arranged in lock body 6 by rotating shaft 1, retaining element 4 rotates centered by rotating shaft 1, retaining element 4 comprises the protuberance 2 of locked dead bolt 3 and removes locked planar portions 5, protuberance 2 sticks in stop-return slot 8, can dead bolt 3 is locked, rotate retaining element 4, make protuberance 2 screw out stop-return slots 8, can remove lockedly, dead bolt 3 can free-extension.

Above demonstration and described basic principle of the present utility model, principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and manual is only preference of the present utility model; be not used for limiting the utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.

Claims

1. antitheft check device of door lock, comprise lock body and insert the interior dead bolt of lock body, dead bolt and the lock core engagement that is arranged in lock body is characterized in that: also be provided with rotating retaining element in described lock body, be provided with the stop-return slot with the retaining element coupling in the middle part of described dead bolt.

2. the antitheft check device of door lock according to claim 1, it is characterized in that: described retaining element is arranged in lock body by rotating shaft.

3. the antitheft check device of door lock according to claim 1 and 2 is characterized in that: described retaining element comprises the protuberance of locked dead bolt and removes locked planar portions.