CN201486242U

CN201486242U - Lock cylinder twisting prevention device

Info

Publication number: CN201486242U
Application number: CN2009201712135U
Authority: CN
Inventors: 章国荣
Original assignee: WANGLI GROUP CO Ltd
Current assignee: WANGLI GROUP CO Ltd
Priority date: 2009-08-12
Filing date: 2009-08-12
Publication date: 2010-05-26
Anticipated expiration: 2019-08-12

Abstract

The utility model discloses a lock cylinder twisting prevention device, which comprises a lock cylinder. The lower part of the lock cylinder is provided with a key hole, the side surface of the lower part of the lock cylinder is provided with an annular groove, the lower part of the lock cylinder is also provided with a twisting prevention device which can rotate around the axial line of the lock cylinder for 360 degrees, the twisting prevention device is a sheath, the sheath continuously extends to the lower end face of the lock cylinder from the part above the annular groove on the side surface of the lock cylinder, the sidewall of the sheath is formed with a plurality of bulges in the positions corresponding to the position of the annular groove, and the bulges are matched with the groove. The utility model has the advantages of simple structure and high practicality. The twisting prevention device which can rotate around the lock cylinder for 360 degrees in the key hole of the lock cylinder can prevent the lock cylinder from twisting.

Description

The lock core anti-twisting equipment

Technical field

The utility model belongs to lock construction component technology field, particularly a kind of anti-twisting equipment that is contained on the lock core.

Background technology

The kind of existing lock core is more, the common ground that they are opened is that key is inserted in the lockhole, cooperate with groove in the lockhole by the shift fork of key and to drive movable sleeve and rotate, the shortcoming of this rotary type lock core is can not prevent turning round, for example, someone clamps that part of lock core with pipe wrench or other instruments outdoors, just firmly reverses then and can destroy theftproof lock.

The utility model content

In order to solve the deficiency that prior art exists, the utility model provides a kind of lock core anti-twisting equipment, and theftproof lock can not turned on by force.

To achieve these goals, the technical scheme that the utility model adopted is: the lock core anti-twisting equipment comprises lock core, the lock core bottom is provided with keyhole, described lock core lower side surface has annular groove, the lock core bottom is provided with one can be around the anti-twisting equipment of lock core axis 360 degree rotations, this anti-twisting equipment is a sheath, the top extends to the lower surface of lock core to this sheath always from the lock core side in annular groove, the corresponding annular groove of described sheath sidewall position forms a plurality of inside projection, projection and groove fit.

Described projection evenly distributes around the sheath axis.

The beneficial effects of the utility model are: simple in structure, practical, in that part of keyhole of lock core, being equipped with one can make lock core play anti-torsion effect around the anti-twisting equipment of lock core 360 degree rotations.

Description of drawings

Below in conjunction with accompanying drawing the utility model is described further:

Fig. 1 is a sectional structure schematic diagram of the present utility model;

Fig. 2 is a decomposition texture schematic diagram of the present utility model.

The specific embodiment

The following stated only is preferred embodiment of the present utility model, does not therefore limit protection domain of the present utility model.

See Fig. 1, shown in 2: lock core anti-twisting equipment of the present utility model comprises lock core 1, lock core 1 bottom is provided with keyhole 11, lock core 1 lower side surface has annular groove 12, lock core 1 bottom is provided with one can be around the anti-twisting equipment of lock core 1 axis 360 degree rotations, this anti-twisting equipment is a sheath 2, this sheath 2 extends to the lower surface of lock core 1 always in annular groove 12 tops from lock core 1 side, the corresponding annular groove of sheath 2 sidewalls 12 positions form a plurality of inside projectioies 21, this projection 21 evenly distributes around sheath 2 axis, projection 21 cooperates with annular groove 12, when pipe wrench is clipped in sheath 2 when reversing, sheath 2 is with respect to lock core 1 idle running, prevent that lock core 1 from being turned round badly, play antitheft effect.

The internal construction and the operating principle of lock core 1 are same as the prior art, repeat no more here.

Claims

1. lock core anti-twisting equipment, comprise lock core (1), lock core (1) bottom is provided with keyhole (11), it is characterized in that: lock core (1) lower side surface has annular groove (12), lock core (1) bottom is provided with one can be around the anti-twisting equipment of lock core (1) axis 360 degree rotations, this anti-twisting equipment is a sheath (2), the top extends to the lower surface of lock core (1) to sheath (2) always from lock core (1) side in annular groove (12), the corresponding annular groove (12) of described sheath (2) sidewall position forms a plurality of inside projectioies (21), and projection (21) cooperates with annular groove (12).

2. lock core anti-twisting equipment according to claim 1 is characterized in that: described projection (21) evenly distributes around sheath (2) axis.