CN2736485Y

CN2736485Y - Theft-proof lock

Info

Publication number: CN2736485Y
Application number: CN200420089298.XU
Authority: CN
Inventors: 李善德
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-10-29
Filing date: 2004-10-29
Publication date: 2005-10-26
Anticipated expiration: 2014-10-29

Abstract

The utility model discloses a theft-proof lock, comprising a casing and a lock core. A cylindrical lock opening sleeve is arranged between the casing and the lock core, a marble with a groove and an inner key groove provided with inner keys are arranged in the lock core, the lock opening sleeve is provided with an outer key clamping groove in which outer keys are arranged, and a clamping groove is arranged at the position where the inner wall of the casing is corresponding to the outer key clamping groove. The key not to the anti-theft lock is inserted into the lock hole and the lock core can be rotated freely about 360 degree, but the lock still can not be opened, so the safety performance of the lock is improved.

Description

Anti-theft lock end

Technical field

The utility model relates to a kind of tapered end, and particularly a kind of non-key insertion can be turned round three-sixth turn and lock the anti-theft lock end that is not unlocked.

Background technology

The lock of the prior art relevant with the utility model, shown in Fig. 1-2, comprise lock core 2, housing 1, on lock core 2 and housing 1, offer key pilot trench 20 respectively, in key pilot trench 20, be provided with key 30, in lock core, be provided with and have the pellet shot from a slingshot 6 of cheating groove 5, pellet shot from a slingshot 6 is connected with back-moving spring 7, when non-key inserts lock core, key 30 can't in move, lock

core

2 and 1 is lived by the key subcard, lock core 2 can not twist, and the key 15 that has only this lock inserts lock cores 2, the hole groove 5 of pellet shot from a slingshot 6 point-blank, key 30 moves in the groove 5 of pellet shot from a slingshot hole, lock core 2 separates with object 1, thereby unblanks.Though the anti-technical unlocking of the lock of this structure is more effective, can not prevent destructions such as the turning round of robber's tool using, sled, keep away unavoidable oneself damage.

The utility model content

At the shortcoming that above-mentioned prior art exists, the purpose of this utility model is to provide a kind of non-tapered end key insertion can turn round three-sixth turn and lock the anti-theft lock end that is not unlocked.

The technical solution adopted in the utility model is: a kind of anti-theft lock end, comprise housing, lock core, between housing and lock core, be provided with the cylindrical shape sleeve of unblanking, in lock core, be provided with the pellet shot from a slingshot and the internal key pilot trench of band hole groove, be provided with internal key in the internal key pilot trench, offer the external key draw-in groove on the described sleeve of unblanking, be provided with external key in the external key draw-in groove, the position relative with the external key draw-in groove in described inner walls is provided with draw-in groove.

Described pellet shot from a slingshot is arranged and can be a row, and described pellet shot from a slingshot is arranged also can be two rows, is arranged on the both sides at lock core center.

Can be provided with in the bottom of described tapered end and to prevent the anti-drilling lid that pulls out outside the core, described anti-drilling lid can be provided with anti-drilling sheet by on the dowel fixes housing between anti-drilling lid and tapered end, described anti-drilling sheet and anti-drilling cover in the bottom of the sleeve of unblanking overlapping.

Anti-theft lock end of the present utility model, in lock core, be provided with the pellet shot from a slingshot and the internal key draw-in groove of band hole groove, in the internal key draw-in groove, be provided with internal key, on the sleeve of unblanking, offer the external key draw-in groove, in the external key draw-in groove, be provided with external key, the position relative with the external key draw-in groove in described inner walls is provided with draw-in groove, when non-key inserts the key hole, the hole groove of pellet shot from a slingshot can't overlap point-blank, internal key can't in move, external key is in the housing and the state that sleeve blocks of unblanking, lock core is in released state with the sleeve of unblanking, at this moment, lock core can at will be turned round three-sixth turn; And the key of working as this tapered end inserts keyhole, the hole groove of pellet shot from a slingshot is overlapped on a line, internal key is under the effect of internal pressure, in move on in the hole groove of pellet shot from a slingshot, external key is along with moving in internal key, lock core is lived by the external key subcard with the sleeve of unblanking, and reverses lock core and just the sleeve of unblanking can be rotated, and reaches the purpose of unblanking.

The utility model is described in further detail below in conjunction with drawings and the specific embodiments.

Description of drawings

Fig. 1 is the closure state cross sectional representation of the lock of prior art;

Fig. 2 is the opening cross sectional representation of the lock of prior art;

Fig. 3 is the closure state cross sectional representation of embodiment one of the present utility model;

Fig. 4 is the opening cross sectional representation of embodiment one of the present utility model;

Fig. 5 is the lock core cross-sectional view of embodiment one of the present utility model;

Fig. 6 is the sectional view of Fig. 3 of the present utility model;

Fig. 7 is the closure state cross sectional representation of embodiment two of the present utility model;

Fig. 8 is the opening cross sectional representation of embodiment two of the present utility model;

Fig. 9 is a longitudinal cross-section of the present utility model schematic diagram.

The specific embodiment

As Fig. 3-6, shown in Figure 9, anti-theft lock end of the present utility model, housing 1, lock core 2, between housing 1 and lock core 2, be provided with cylindrical shape casing 3, keyhole 4 is opened on the lock core 2, in lock core 2, be provided with a row and have the pellet shot from a slingshot 6 of cheating groove 5, be provided with back-moving spring 7 in the rear end of pellet shot from a slingshot 6, offer the internal key draw-in groove 8 vertical in a side of lock core 2, in internal key draw-in groove 8, be provided with internal key 9, on cylindrical shape casing 3, have external key draw-in groove 10 with pellet shot from a slingshot 6, be provided with external key 11 in external key draw-in groove 10, position relative with external key draw-in groove 10 on housing 1 inwall has draw-in groove 16.

In order to strengthen the firmness of tapered end, as shown in Figure 7, be provided with anti-drilling lid 12 in the bottom of tapered end, anti-drilling lid 12 is by on pin 13 stationary housings 1, be provided with anti-drilling sheet 14 between anti-drilling lid 12 and tapered end, described anti-drilling sheet 14 is overlapping in the bottom of the sleeve 3 of unblanking with anti-drilling lid 13.

Embodiment two, as another embodiment, shown in Fig. 7-8, the anti-theft lock end that this is practical, in lock core 2, be provided with two row's pellets shot from a slingshot 6, be separately positioned on the both sides at lock core 2 centers, all be respectively arranged with internal key draw-in groove 8, internal key 9 in the both sides of lock core 2, all be respectively arranged with external key draw-in groove 10, external key 11 in the both sides of cylindrical shape casing 3, on housing 1 and external key draw-in groove 10 corresponding inwalls, have draw-in groove 16.Like this, utilize the display mode of double pellet shot from a slingshot 6 can make the variation of spoon sign indicating number more, be more conducive to the protection of tapered end security performance.

During use, when non-key inserts key hole 4, the hole groove 5 of pellet shot from a slingshot 6 can't overlap point-blank, internal key 9 can't in move, external key 11 is in the state that the housing 1 and the sleeve 3 of unblanking are blocked, and external key 11 is in external key draw-in groove 10 and the draw-in groove 16, and lock core 2 is in released state with the sleeve 3 of unblanking, this is that institute's lock core 2 can at will be turned round three-sixth turn; And the key 15 of working as this tapered end inserts keyholes 4, the hole groove 5 of pellet shot from a slingshot 6 is overlapped on a line, internal key 9 is under the effect of internal pressure, in move on in the hole groove 5 of pellet shot from a slingshot 6, external key 11 is along with moving in internal key 9, and external key 11 is in internal key draw-in groove 8 and the external key draw-in groove 10, and lock core 2 blocks with the sleeve 3 of unblanking, reverse lock core 2 and just the sleeve 3 of unblanking can be rotated, reach the purpose of unblanking.

The pellet shot from a slingshot 6 here can be a shell fragment also according to the design needs, and the technique effect that it produced is constant, and all belongs to protection content of the present utility model.

Claims

1, a kind of anti-theft lock end, comprise housing, lock core, it is characterized in that: between housing and lock core, be provided with the cylindrical shape sleeve of unblanking, in lock core, be provided with the pellet shot from a slingshot and the internal key pilot trench of band hole groove, be provided with internal key in the internal key pilot trench, offer the external key draw-in groove on the described sleeve of unblanking, be provided with external key in the external key draw-in groove, the position relative with the external key draw-in groove in described inner walls is provided with draw-in groove.

2, anti-theft lock end according to claim 1 is characterized in that: described pellet shot from a slingshot is arranged as a row.

3, anti-theft lock end according to claim 1 is characterized in that: described pellet shot from a slingshot is arranged as two rows, is arranged on the both sides at lock core center.

4, anti-theft lock end according to claim 1 is characterized in that: is provided with in the bottom of described tapered end and prevents the anti-drilling lid that pulls out outside the core,

5, anti-theft lock end according to claim 4 is characterized in that: described anti-drilling lid is provided with anti-drilling sheet by on the dowel fixes housing between anti-drilling lid and tapered end, described anti-drilling sheet and anti-drilling cover in the bottom of the sleeve of unblanking overlapping.