CN2389206Y - Cylinder lock - Google Patents

Abstract

The utility model discloses a cylinder lock which is composed of a lock body and a lock core, wherein, a lock hole of the lock core is made into a lock hole with a non-rectilinear cross section. The utility model can prevent a social lawbreaker from using a self-made comb-shaped common key to unlock and enter a room to commit a crime and has the advantage of high anti-theft function.

Description

Cylinder lock

The utility model relates to lock, particularly a kind of cylinder lock that can prevent that the lawless person from opening with the comb shape common key.

For a long time, no matter commercially available cylinder lock is bright lock or built-in lock, and its basic structure all is to be made of lock body and the lock core that can rotate in lock body, after lock core is fixed, is promptly locked by different link gear locks, and lock core rotates, and lock promptly is opened.The locking of lock core and rotation are then realized by the shift in position of pellet shot from a slingshot in the pellet shot from a slingshot hole of spring and key control.When the pellet shot from a slingshot in the lock body leaned on the elastic force of spring to make its front portion stretch in the lock core marble hole, lock core can not rotate, and locks locked; Key is inserted in the lockhole of lock core, the teeth groove of key then compresses the pellet shot from a slingshot in the lock core marble hole backward, and the front end face of the whole pellets shot from a slingshot in the lock body is retracted on the interface of lock body and lock core, and lock core is promptly rotatable, and lock is opened.

Above-mentioned cylinder lock has a shortcoming in design, utilize own special comb shape common key to unblank to enter the room to lawless person in the society crime provides may.This shortcoming be exactly the cross section of the lockhole in the lock core be linear (raised line of ignoring corresponding keyway on the hole wall).

So-called comb shape common key, the total-width ratio lockhole width of using a stalloy (as manual saw blade) to make exactly is narrow, tooth depth equals or is slightly larger than pellet shot from a slingshot hole length in the lock core, and the facewidth is slightly less than the pellet shot from a slingshot bore dia, the arranging and pellet shot from a slingshot hole site corresponding side's stripping fork shape hardware of tooth.Existing cylinder lock, so long as same specifications and models, the size in its lock body, lock core, lockhole and pellet shot from a slingshot hole is identical, only depends on the different size assembled arrangement of one group of pellet shot from a slingshot in the lock core to make with different key operated differences lock.So, insert any one in the cylinder lock lockhole of these specifications and models with the above-mentioned comb shape common key of a certain specifications and models of correspondence, portable the shank of the key is laterally passed left, the square shaped teeth in corresponding each the pellet shot from a slingshot hole of this common key be about to pellet shot from a slingshot in the lock core along the pellet shot from a slingshot hole to left translation, because tooth depth equals or is slightly larger than the lock core marble hole length, so can the pellet shot from a slingshot in the lock core all be passed in the pellet shot from a slingshot hole of lock body simultaneously.In case the end face of square tooth arrives on the interface of lock core and lock body, lock core promptly is disengaged lock-out state, and key joins same lock core, and lock promptly is opened.Therefore, its anti-theft feature of existing cylinder lock is dissatisfactory.

The purpose of this utility model is improved above-mentioned prior art, and a kind of cylinder lock that can effectively prevent with above-mentioned comb shape common key unlatching is provided, thereby improves the anti-theft feature of cylinder lock.

The purpose of this utility model can be achieved through the following technical solutions.

This scheme is exactly to keep the structure of existing cylinder lock constant substantially, and just the lockhole of lock core being designed to its cross section is non-linear.Certainly, the key of this lock also will be made corresponding non-linear.

This non-linear can be a broken line shape, also can be dual slope " Z " shape or other shape.

The cylinder lock made from such scheme, because the cross section of lockhole is a broken line shape, rethink with above-mentioned comb shape common key open this type of lock just can not also all must make the non-linear of its cross section because open any key of this type of lock for correspondence, otherwise, just insert and do not advance lockhole.In a single day insert in the lockhole and the cross section is the key of non-linear, just can only rotate, can not laterally move.

The embodiment that provides below in conjunction with accompanying drawing is further described the utility model.

Fig. 1 adorns the existing cylinder lock of five pellets shot from a slingshot by the principle schematic (broken section) of above-mentioned comb shape common key unlatching in being;

The lockhole cross section that Fig. 2 provides for the utility model is the partial view of the cylinder lock lockhole end of broken line shape.

See figures.1.and.2, the lockhole 9 of the lock core 8 of existing cylinder lock is offered along a side of lock core, its cross section is linear, lateral depth is generally all greater than lock core radius (generally about 2/3rds), lock body 2 is identical with pellet shot from a slingshot hole 7 diameters in the lock core, evenly distribute up and down, spacing 6 equates, the lock spring outer end of hole is shut by bonding jumper 5, built-in spring 4 is when above-mentioned comb shape common key 10 is inserted lockholes and laterally to left translation when the increment face supports lock core and lockhole interface in figure, although five pellets shot from a slingshot, the 1 length difference in the lock core, headed in the lock marble hole but all join with the pellet shot from a slingshot in the lock body 3, lock core is in rotatable state.And adopt lockhole cross section shown in Figure 2 is the cylinder lock of broken line, and its key must cross section be a broken line shape also, just can not but will laterally pass again.

The technical scheme that existing various cylinder lock adopts the utility model to provide is done its anti-theft feature of improvement slightly and will greatly be improved.

Claims (2)

1, a kind of cylinder lock is made of lock body (2) and lock core (8), and it is characterized in that: the cross section of the lockhole of lock core (9) is a non-linear.

2, as the said cylinder lock of claim 1, it is characterized in that: said non-linear is broken line shape or dual slope " Z " shape.

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