CN2052421U

CN2052421U - Anti-picking lock

Info

Publication number: CN2052421U
Application number: CN 89210484
Authority: CN
Inventors: 刘其芳
Original assignee: Liaoning Comprehensive Social Security Administration Office; HONGQI MECHANICAL FACTORY SHENYANG
Current assignee: Liaoning Comprehensive Social Security Administration Office; HONGQI MECHANICAL FACTORY SHENYANG
Priority date: 1989-05-12
Filing date: 1989-05-12
Publication date: 1990-02-07

Abstract

The utility model belongs to a mechanical lock whose lock gate is fixed on a wing fan, having a key. The utility model comprises a lock case, a lock core arranged on the lock case, a shifting lever, and a lock tongue mechanism, which is characterized in that a self-locking mechanism respectively controlled by the lock core and a handle is provided, and the lock tongue goes through a three-step control. The utility model overcomes the defect of the prior art that the lock tongue can be shifted and unlocked by destroying the lock core, and the anti-prizing performance of the lock is enhanced.

Description

Anti-picking lock

The utility model belongs to a kind of key mechanical that has that is fixed on the wing of locking a door to be locked, and comprises lock housing, is installed on lock core, dead man, spring bolt mechanism on the lock housing.

Existing similar lock spring bolt mechanism only is a flexible dead bolt, and lock core is only by a link control of dead man dead bolt, as long as just easily dead bolt is unpluged the pick-proof poor-performing so destroyed lock core.

The purpose of this utility model just is to provide a kind of improved being fixed on the wing key mechanical lock to be arranged, and its spring bolt mechanism is both by lock core control, again can self-locking, thereby the pick-proof performance is good.

Technical essential of the present utility model is: spring bolt mechanism constitutes the said self-locking mechanism of the interlock of lock core dead man and dead bolt own by the dead bolt and the dead bolt self-locking mechanism of band handle.Push away dead bolt to latched position with manual handle, the then locking that is about to of its self-locking mechanism.When unblanking, stir dead man by lock core, open said self-locking mechanism, then dead bolt can be got back to lockset position of coupler.

Advantage of the present utility model is: dead bolt is by following three grades of controls: the one, and lock core---the dead man control that realizes with door key, the 2nd, from lock control, the 3rd, the manual control of manual handle, in case lock core damages, dead bolt is difficult for opening, the pick-proof performance greatly improves.

Example of the present utility model is provided by accompanying drawing 1～3, below in conjunction with example in detail it is described in detail.

Fig. 1 is a kind of concrete structure schematic diagram of the utility model (lock-out state).

Fig. 2 is unlocking condition figure of the present utility model shown in Figure 1.

Fig. 3 is the partial sectional view along Fig. 2 A-A line.

According to Fig. 1～3, the utility model comprises lock housing 7, the lock core 13(that is installed in the lock housing 7 preferably is located on the bottom surface, being difficult for sled decreases), dead man 12(cam structure by lock core 13 band commentaries on classics), and spring bolt mechanism, it is characterized in that: spring bolt mechanism is made up of dead bolt and self-locking mechanism thereof, dead bolt is by hyoplastron 3 and be connected in two of hyoplastron 3 two ends (1 or still less also can) tongue hooks 1 and form, hyoplastron 3 is articulated on the steady pin 4 in the lock housing 7 by two chutes 2, realize hyoplastron 3 movingly (only can upper and lower displacement) place in the lock housing 7 and keep tongue hook 1 and manually handle 5 be exposed to outside the lock housing 7; Self-locking mechanism is: lock housing 7 is built-in with and plays tongue 9, and dead man 12 cam end are just inserted between the block 10,11 that plays tongue 9, when hyoplastron 3 reaches the lower limit displacement, plays tongue 9 and be able to stretch in the retaining groove 8 of hyoplastron 3; In addition, can establish the extension spring 6 that moves on the interlock hyoplastron 3 in lock housing 7, so that when playing tongue 9 and shifting out retaining groove 8, hyoplastron 3 can be affected by extension spring 6 and move.

Above example operating principle is as following:

1. lock a door: see Fig. 1, down by manual handle 5, hyoplastron 3 is displaced downwardly to the displacement lower limit, plays tongue 9 and be able to stretch in the retaining groove 8, keeps hyoplastron 3 and tongue hook 1(to stretch in the pintle hook lock that is provided with on opposite house or the doorframe) state of being in is lock-out state.

2. unblank: see Fig. 2, rotate dead man 12 with key by lock core 13, then dead man 12 affects bullet tongue 9 to shift out retaining groove 8, so, moving to the displacement upper limit on the hyoplastron 3 under extension spring 6 effects, tongue hook 1 breaks away from pintle hook lock, and door promptly is opened.

Above example especially is fit to cross pulling door (as the iron bar door) and installs.

Claims

1, pick-proof lock, comprise lock housing 7, be installed on the lock core in the lock housing, the driving lever that affects by lock core, and spring bolt mechanism, it is characterized in that: spring bolt mechanism is made up of dead bolt and self-locking mechanism thereof, dead bolt is by forming with the hyoplastron 3 of manual handle and the tongue hook 1 that is connected on the hyoplastron 3, hyoplastron 3 (only can upper and lower displacement) movingly places in the lock housing, its manual handle and tongue hook all are exposed to outside the lock housing, self-locking mechanism is: lock housing is built-in with and plays tongue 9, said dead man affects and plays tongue 9, when hyoplastron 3 reaches the lower limit displacement, plays tongue 9 and be able to stretch in the retaining groove 8 of hyoplastron 3.

2,, it is characterized in that by the described pick-proof lock of claim 1: hyoplastron 3 by two chutes 2 be articulated in realize on the steady pin 4 in the lock housing movingly above-mentioned.

3, by the described pick-proof lock of claim 1, it is characterized in that: lock core device is in the lock housing bottom surface.

4, by the described pick-proof lock of claim 2, it is characterized in that: lock core device is in the lock housing bottom surface.

5, by each described pick-proof lock of claim 1～4, it is characterized in that: said dead man is the dead man 12 of cam structure, plays tongue 9 and has block 10,11, and dead man 12 cam end are just inserted between the block 10,11.