CN2702003Y - Interlocking device for prizing-proof door lock - Google Patents

Abstract

The utility model discloses an interlocking device for a prizing-proof door lock, which comprises a lock body (1) which is fixed on a door leaf. A supporting bracket (5) is fixed on a door frame corresponding to the lock body (1), and is provided with a pushing plate (3). A bolt (2) of the lock body is matched with the pushing plate (3). Two mutually parallel chain links (4 and 6) are arranged between the supporting bracket (5) and the pushing plate (3). One end of the chain links (4 and 6) is hinged on the pushing plate (3), and the other end is hinged on the supporting bracket (5). The pushing plate (3) is hinged with a connecting rod (7) which is hinged with at least one small lock which is fixed on the door frame. After adopting the structure, when locking, the slope bolt (2) is used for pushing the pushing plate (3) to rotate upwards and rightwards. The pushing plate (3) is used for pushing the small bolt (11) via the connecting rod (7) and a small locking lever (9), so that the small bolt (11) is inserted into the locking hole of the door leaf along a horizontally guide groove (10). By linkage with original locking points, cross and mutual locking is realized. When opening the lock, the small lock is in the state of opening all the time, under the action of self-weight. The utility model has the advantages of simple structure, convenient operation, better prizing-proof performance, etc.

Description

Pick-proof door lock interlock

Technical field

The invention relates to a kind of fixture of pick-proof door lock, particularly a kind of interlock that improves the anti-pick-proof performance of forcing open the door.

Background technology

Along with the development and the growth in the living standard of society, the quality of the anti-safe precaution measure of forcing open the door in office and inhabitation place directly has influence on the safety of the property and the person, and for this reason, the anti-great majority of forcing open the door have all used the Multiple locking point theftproof lock.But at present the theftproof lock that uses all can only folk prescription to locking, promptly can only lock to door frame from door leaf, the pick-proof poor performance does not have real antitheft effect.

Summary of the invention

In order to overcome the disadvantage of above-mentioned existence, the invention provides that a kind of simple in structure, interlocking linkage, lock point intersect, the better pick-proof door lock interlock of pick-proof performance.The invention solves the technical scheme that its technical problem adopts and comprises the lock body that is fixed on the door leaf, be fixed with support on the door frame corresponding with lock body, support is provided with push pedal, dead bolt and push pedal on the lock body are complementary, be provided with two chain links that are parallel to each other between support and push pedal, an end of chain link is hinged in the push pedal, and the other end is hinged on the support, be hinged with connecting rod in the push pedal, a hinged at least little lock that is fixed on the door frame on the connecting rod.

Described little lock comprises little lock body, little dead bolt, little lock lever, and little dead bolt is arranged on the horizontal guide groove of little lock body, and little lock lever is hinged on the little lock body, and an end of little lock lever is connected with connecting rod, and the other end is connected with little dead bolt.

After adopting said structure, when door lock is locked, the inclined-plane dead bolt promotes push pedal, and push pedal is the center of circle, is radius with the chain link with the hinge of chain link and support, rotates to the upper right side, push pedal drives little lock lever rotation by connecting rod, the little dead bolt of little lock lever pushing moves and inserts in the lockhole of door leaf along horizontal guide groove, makes little lock be in locking state all the time, by linking with original lock point, realize the intersection interlocking, play the effect of dual anti-prying; When door-lock opening, under the effect of deadweight, little lock is in open mode all the time; Have advantages such as simple in structure, easy to use, that the pick-proof performance is better.

Description of drawings

Fig. 1 is the structural representation of the invention.

The specific embodiment

Shown in Figure 1, specific embodiments for a kind of pick-proof door lock of the invention interlock, it comprises the lock body 1 that is fixed on the door leaf, be fixed with support 5 on the door frame corresponding with lock body 1, support 5 is provided with push pedal 3, dead bolt 2 on the lock body 1 is complementary with push pedal 3, between support 5 and push pedal 3, be provided with two chain links that are parallel to each other 4,6, one end of chain link 4,6 is hinged in the push pedal 3, the other end is hinged on the support 5, be hinged with connecting rod 7 in the push pedal 3, a hinged at least little lock that is fixed on the door frame on the connecting rod 7.Described little lock comprises little lock body 8, little dead bolt 11, little lock lever 9, and little dead bolt 11 is arranged on the horizontal guide groove 10 of little lock body 8, and little lock lever 9 is hinged on the little lock body 8, and an end of little lock lever 9 is connected with connecting rod 7, and the other end is connected with little dead bolt 11.

Its course of work is as follows, when locking, the promotion push pedal 3 of the inclined-plane dead bolt 3 of lock body 1, push pedal 3 is the center of circle, is radius with chain link 4,6 with the hinge of chain link 4,6 and support 5, rotate to the upper right side, push pedal 3 drives little lock lever 9 rotations by connecting rod 7, and little lock lever 9 promotes little dead bolt 11 and moves and insert in the lockhole of door leaf along horizontal guide groove 10, reaches to link, intersect the requirement of interlocking with original lock point.When unblanking, dead bolt 2 retraction, push pedal 3, connecting rod 7 are opened little lock point 11 under the effect of deadweight automatically, have originality advantages such as simple in structure, intersection interlocking, pick-proof performance are good.

Claims (2)

1, a kind of pick-proof door lock interlock, comprise the lock body (1) that is fixed on the door leaf, it is characterized in that: be fixed with support (5) on the door frame corresponding with lock body (1), support (5) is provided with push pedal (3), dead bolt (2) on the lock body (1) is complementary with push pedal (3), between support (5) and push pedal (3), be provided with two chain links that are parallel to each other (4,6), one end of chain link (4,6) is hinged in the push pedal (3), the other end is hinged on the support (5), be hinged with connecting rod (7) in the push pedal (3), a hinged at least little lock that is fixed on the door frame on the connecting rod (7).

2, pick-proof door lock interlock according to claim 1, it is characterized in that: described little lock comprises little lock body (8), little dead bolt (11), little lock lever (9), little dead bolt (11) is arranged on the horizontal guide groove (10) of little lock body (8), little lock lever (9) is hinged on the little lock body (8), one end of little lock lever (9) is connected with connecting rod (7), and the other end is connected with little dead bolt (11).