CN203066629U - Antitheft check device for roller shutter door lock - Google Patents

Abstract

The utility model provides an antitheft check device for a roller shutter door lock to solve the problem of poor antitheft effect of a current mechanical door lock with a simple structure and relates to the field of antitheft locks. The antitheft check device comprises a lock body and a spring bolt inserted into the lock body; the spring bolt is meshed with a lock cylinder arranged in the lock body; a sliding key capable of moving up and down is arranged in the lock body through a chute; the middle part of the spring bolt is provided with a check notch matched with the sliding key; and the sliding key is matched with the check notch of the spring bolt so as to lock the spring bolt. According to the utility model, the check device is additionally arranged in an existing door lock, so that the effect that the door lock still cannot lose effectiveness under this circumstance that the lock cylinder is damaged can be realized; and moreover, the check device is simple in structure design, low in manufacturing cost and convenient and rapid to use.

Description

The antitheft check device of rolling screen 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 rolling screen 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 the actual life; the thief utilizes boosting-rod or other technology unlocking instrument destroying lock core outdoors through regular meeting; make the dead bolt withdrawal of door lock or ineffective, open rolling-gate then, steal.

The utility model content

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

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

The antitheft check device of a kind of rolling screen door lock, comprise lock body and insert the interior dead bolt of lock body, dead bolt and the lock core engagement that is installed in the lock body, it is characterized in that: also be provided with slide key moving up and down in the described lock body, described dead bolt middle part is provided with the non-return breach with the slide key coupling, the non-return breach that arranges on slide key and the dead bolt cooperates can be locked with dead bolt, and the thief is under the situation of having destroyed lock core, and door lock still can not lose efficacy.

Described slide key is installed in the lock body by chute, and slide key can move up and down along chute.

The utility model has been set up check device in existing door lock, can be implemented under the ruined situation of lock core, and 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 shown in Figure 1 and Figure 2, the antitheft check device of a kind of rolling screen door lock, comprise the dead bolt 1 in lock body 2 and the insertion lock body 2, dead bolt 1 and lock core 5 engagements that are installed in the lock body, also be provided with slide key 3 moving up and down in the lock body 2, slide key 3 is installed in the lock body 2 by chute 4, slide key 3 can move up and down along chute 4, dead bolt 1 middle part is provided with the non-return breach with slide key 3 couplings, the non-return breach that arranges on slide key 3 and the dead bolt 1 cooperates can be locked with dead bolt 1, the thief is under the situation of having destroyed lock core 5, and door lock still can not lose efficacy.

During operation, dead bolt 1 stretches out lock body 2, and the non-return breach that arranges on the dead bolt 1 arrives slide key 3 tops, and slide key 3 moves up and arrives the non-return indentation, there, and dead bolt 1 can not be withdrawn, and reaches the non-return purpose; Slide key 3 moves down, and leaves the non-return indentation, there on the dead bolt 1, and dead bolt 1 is withdrawal lock body 2 under the drive that lock core 5 rotates, thereby reaches the purpose of unblanking.

More than show 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 the manual only is 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 (2)

1. antitheft check device of rolling screen door lock, comprise lock body and insert the interior dead bolt of lock body, dead bolt and the lock core engagement that is installed in the lock body is characterized in that: also be provided with slide key moving up and down in the described lock body, described dead bolt middle part is provided with the non-return breach with the slide key coupling.

2. the antitheft check device of a kind of rolling screen door lock according to claim 1, it is characterized in that: described slide key is installed in the lock body by chute.

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