CN2080540U - Theft-proof lock - Google Patents

Abstract

The utility model relates to a theft-proof lock. A star-shaped slide plate, a guide column, a big shifting plate which is contacted with the herringbone hole edge of the star-shaped slide plate in a sliding mode and a return spring of a parallel guide column which is sheathed on a square plate are arranged on the outer side of a slide plate on the square plate. The star-shaped slide plate is pushed by the return spring. Meanwhile, the theft-proof lock of a locking device composed of a small shifting plate, a middle push rod which is characterized in that a standing column slides in an arc-shaped hole of the small shifting plate and a slide block which is fixedly connected with the other end of the push rod and is fastened with a lug of the big shifting plate is also allocated on the square plate. The theft-proof lock adopts three keys for unlocking three different lock cores for realizing sequence control. When one or two lock cores are destructed, the lock can still not be unlocked and also has a theft-proof function or according to requirements, only a square lock tongue is utilized or three lock tongues are all utilized and the small shifting plate is not locked at last.

Description

theft-proof lock

The utility model provides a kind of theftproof lock, by square plate in dead bolt storehouse, lock box, the lock box and the slide plate of the outfit return spring that is provided with thereon, the dead bolt that one end and slide plate are hinged, the hand that rotatable promotion slide plate is dialled plate are turned round and formation such as lock core, belong to the architectural hardware technical field.

Now no matter the door built-in lock that uses is single tongue, two tongue or three tongues lock, all be to take monolock control, that is use a key, the different rotary angle of conversion lock core, the order that realizes dead bolt into and out of, reach the purpose of locking a door.This lock construction is simpler, uses also more convenient.But existence is easily pushed aside, and is perhaps destroyed because of lock core, and loses the deficiency of the antitheft ability of locking a door.

The purpose of this utility model is the deficiency that solves existing theftproof lock, provides a kind of antitheft reliability higher theftproof lock.

The purpose of this utility model realizes by taking following technical measures.

The slide plate outside on square plate is provided with The shape slide plate, and guide pillar and

The big group plate in sliding-contact ground, limit, herringbone hole of shape slide plate, the promotion of the parallel guide pillar on the side's of being enclosed within plate

The back-moving spring of shape slide plate simultaneously, also disposes on square plate by little group of plate, and the middle push rod that column slides in little group of plate arcuate socket is dialled the blocking device that slide block constituted of plate lug greatly with the affixed hook of the push rod other end.

Large and small group of plate turned round with its hand and lock core shaft's rotation.

During use, order is elder generation's locking side's tongue, and promptly slide plate puts in the dead bolt storehouse because of dialling before plate rotates the side's of making tongue.With another key, rotate the big lock core of dialling plate again, the big plate of dialling is promoted The shape slide plate protracts, and has limited the retreating of slide plate of hinged side's tongue.If The circular dead bolt of the overhanging end rivet clasp of shape slide plate just forms the state of three tongues with lock.As required, can be again with little group of plate of a key rotation, mobile putter makes the slide block hook dial the lug of plate greatly, and realization locks in proper order, when unblanking, carries out in reverse order.

This theftproof lock adopts three keys, opens three different lock cores, realizes sequential control, when destroyed one or two lock core, does not still unblank, and also possesses anti-theft feature.Also can be as required, user's dead bolt, or three dead bolts and usefulness, and do not carry out the locking of last little group of plate.

Accompanying drawing 1 is the structural representation that the utility model lifts base plate, and Fig. 2 is its sectional view, the structural representation of Fig. 3 side of being plate, and the lateral view of Fig. 4 side of being plate, Fig. 5 are the blocking device organigrams.Below in conjunction with accompanying drawing, describe the technical characterictic of the utility model most preferred embodiment in detail.

Theftproof lock, by the lock box (12) on the dead bolt storehouse (3) that is installed in doorframe, the build-in door, square plate (13) in the lock box, configuration simultaneously has the slide plate (4) of return spring on side's plate, rivet clasp is at the dead bolt (2) of slide plate, and rotatable group of plate (6), and then the hand of control latch bolt position is turned round and lock core etc. is common constitutes.And the slide plate outside in lock box on the square plate is provided with

Shape slide plate (5), and guide pillar exists

The big group plate (9) that slides in the limit, herringbone hole of shape slide plate, the promotion of parallel guide pillar on the side's of being enclosed within plate The back-moving spring of shape slide plate (8).The middle push rod (10) that column (15) slides in little group of plate arcuate socket (14), the blocking device that the slide block (11) of the big driving lever lug of push rod other end hook is formed also are set on square plate by little group of plate (7).Circle dead bolt (2) is riveted on

The overhanging end of shape slide plate (5).

Claims (2)

1, a kind of theftproof lock, by square plate in dead bolt storehouse, lock box, the lock box and the slide plate of the outfit return spring that is provided with thereon, the dead bolt that an end and slide plate are hinged, the hand that rotatable promotion slide plate is dialled plate are turned round and formation such as lock core, it is characterized by the slide plate outside on square plate, be provided with

The shape slide plate, and guide pillar and The big group plate in sliding-contact ground, limit, herringbone hole of shape slide plate, the promotion of the parallel guide pillar on the side's of being enclosed within plate

The back-moving spring of shape slide plate simultaneously, also disposes on square plate by little group of plate, and the middle push rod that column slides in little group of plate arcuate socket is dialled the blocking device that slide block constituted of plate lug greatly with the affixed hook of the push rod other end.

2, theftproof lock according to claim 1 is characterized by The circular dead bolt of the overhanging end rivet clasp of shape slide plate.

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