CN2711329Y

CN2711329Y - Theft-proof lock

Info

Publication number: CN2711329Y
Application number: CN 200420066904
Authority: CN
Inventors: 周章东
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-06-10
Filing date: 2004-06-10
Publication date: 2005-07-20
Anticipated expiration: 2014-06-10

Abstract

The utility model discloses a theft-proof lock which comprises a lock casing (10) and a lock core (9), and is characterized in that a lock core sheath (8) is arranged between the lock core and the lock casing, wherein, the lock core sheath is arranged on the same shaft with the lock core and provided with a through hole (18) which is communicated with the inner hole of the lock core sheath; the inner walls of the lock core and the lock casing are provided with grooves (14) and (4), a locking side column (7) is arranged in the through hole, and a transversal bolt (12) is positioned in the groove of the lock core; a blade (11) is arranged between the lock hole and the groove of the lock core, the end face of the transversal bolt on the lock core is coincided with the arc surface of the outer circumference of the lock core when the transversal bolt is locked, and the lock core sheath is provided with a shifting fork (1). The utility model is designed to overcome the problem that the spring lock is damaged forcedly, having a simple structure and good anti-theft and safety performance.

Description

Lock

[technical field]

The utility model relates to a kind of theftproof lock, particularly be a kind of lock with lock core cover.

[background technology]

In the prior art, lock is a lot, general lock all adopts cylinder lock, look into Chinese patent, the patent No. is 02268790.4 and is called the utility model patent of " a kind of anti-theft spring lock core ", its principal claim is to describe like this: " a kind of anti-theft spring lock core; mainly include the lock core in lock core cover and the lock core cover; keyhole is arranged in lock core; the pellet shot from a slingshot passage is arranged on lock core, in the pellet shot from a slingshot passage spring is arranged; go up pellet shot from a slingshot and following pellet shot from a slingshot, in addition; the shifting block of unblanking in addition, it is characterized in that: described lock core includes the twist lock core, fixed lock core and outer twist lock core, the twist lock in-core has keyhole, and the twist lock core is surrounded by fixed lock core outward, the rear end of twist lock core is inserted into a barrel-shaped outer twist lock in-core chamber, outer twist lock in-core has the keyhole that communicates with lock core keyhole, outside fixed lock core and outer twist lock core the lock core cover is arranged, and can rotate between twist lock core and the fixed lock core, fixing can not the rotation between fixed lock core and the lock core cover all can be rotated between outer twist lock core and twist lock core and the lock core cover; Twist lock core pellet shot from a slingshot passage on twist lock core and fixed lock core, on twist lock core and outer twist lock core, outer lock core pellet shot from a slingshot passage is arranged, put outer twist lock core pellet shot from a slingshot passage at outer twist lock core and lock core, in the inside and outside lock core marble passage of twist lock core pellet shot from a slingshot passage and in the outer twist lock core pellet shot from a slingshot passage, all be equipped with down pellet shot from a slingshot, on pellet shot from a slingshot and spring." lock core of this structure is very complicated; under the mandatory effect of external force, be easy to pellet shot from a slingshot is destroyed, also be easy to it be opened, thereby its theftproof performance also be not fine; how breaking away from the lock that uses pellet shot from a slingshot, is the problem that those skilled in the art are exploring always with master key.

[utility model content]

In view of the problem that known technology exists, it is a kind of simple in structure, easy to manufacture that the purpose of this utility model is to provide, and theftproof performance is good, the lock that security performance is high.For achieving the above object, the utility model takes following mode to finish: a kind of lock, have lock housing and lock core, it is characterized in that being provided with between described lock core and the lock housing lock core cover, described lock core cover is installed with lock pin coaxial, described lock core puts and has through hole, this through hole communicates with lock core cover endoporus, the inwall of described lock core and lock housing is provided with groove, be provided with locking side column in the described through hole, be provided with elastic device in the groove of described lock-shell lining, be provided with horizontal bolt in the groove of described lock core, be provided with blade between the lockhole of described lock core and the groove, its end face when locking of the horizontal bolt on the described lock core overlaps with lock core excircle arc surface, and described lock core puts and is provided with shift fork; One side of described blade is provided with ∨ type groove, and the inboard of described horizontal bolt is the ∧ type, can match with the ∨ type groove on the blade, and the opposite side of described blade is provided with step, is provided with return spring below described step; Described elastic device is to be provided with briquetting in the lock-shell lining groove, and is provided with spring in the groove of briquetting.

The utility model is provided with the lock core cover between lock core and lock housing, and its end face when locking of the horizontal bolt on the lock core overlaps with the lock core excircle, thereby in the keyhole with foreign object or other key insertion the utility model lock core, just can rotational lock core, but can not rotational lock core and lock housing between the lock core cover, after the rotation of lock core rests on the optional position, just be difficult to find lock core to put the position of through hole and locking side column again with the non-key that matches with this lockset again, thereby good antitheft effect arranged, after having only the key that will be complementary with the utility model all to insert, just can unblank, its structure is very simple, easy to manufacture, theftproof performance and security performance are all very good, will bring positive result of use to users.

[description of drawings]

The utility model has following accompanying drawing:

Fig. 1 is a structural representation of the present utility model;

Structural representation when Fig. 2 is the utility model locking;

Fig. 3 is the structural representation after the utility model lock core rotates arbitrarily;

Structural representation when Fig. 4 unblanks for the utility model;

Fig. 5 is the structural representation of the utility model after unblanking.

[specific embodiment]

For clearly demonstrating the technical characterstic of technical solutions of the utility model, below by a specific embodiment also in conjunction with the accompanying drawings, this programme is set forth.

By accompanying drawing as can be seen, the utlity model has lock housing 10 and lock core 9, between described lock core 9 and lock housing 10, be provided with lock core cover 8, described lock core cover 8 and lock core 9 coaxial installations, have through hole 18 on the described lock core cover 8, this through hole 18 communicates with lock core cover endoporus 3, the inwall of described lock core 9 and lock housing 10 is provided with groove 14,4, be provided with locking side column 7 in the described through hole 18, be provided with horizontal bolt 12 in the groove 14 of described lock core 9, be provided with blade 11 between the lockhole 13 of described lock core 9 and the groove 14, its end face when locking of the horizontal bolt 12 on the described lock core 9 overlaps with the excircle arc surface of lock core 9; Described lock core cover 8 is provided with shift fork 1, one side of described blade 11 is provided with ∨ type groove 16, the inboard of described horizontal bolt 12 is the ∧ type, can match with the ∨ type groove 16 on the blade 11, the opposite side of described blade 11 is provided with step (not marking among the figure), this step is the key lead, is provided with return spring 15 below described step; During locking, the inboard of described horizontal bolt 12 places outside the ∨ type groove 16 of blade 11, the end face of its horizontal bolt 12 overlaps with the excircle arc surface of lock core, thereby, when inserting lockhole 13 with foreign object or other key, can rotational lock core 9, and in fact, lock core side column 7 on the lock core cover 8 also blocks lock core cover 8 and lock housing 10, and shift fork 1 is on lock core cover 8, so can not open this lockset; Be provided with elastic device in the groove 4 of described lock housing 10 inwalls, in the present embodiment, this elastic device is to be provided with briquetting 6 in lock-shell lining groove 4, and is provided with spring 5 in the groove of briquetting 6.In the time will unblanking, to all insert lockhole 13 with the key 17 that the utility model lock core is complementary, blade 11 in the lock core 9 is all matched with the tartar of key 17, under the effect of key 17 gathering sills, horizontal bolt 12 inboards on the lock core 9 all fall in the ∨ type groove 16 on the blade 11, lock core overlaps under the effect of locking side column 7 elastic device in lock housing groove 4 in 8 through holes 18, and locking side column 7 parts are dropped in the groove 14 on the lock core 9, the end face of locking side column 7 is overlapped with the excircle arc surface of lock core cover 8, at this moment, rotational lock core 9 just can drive lock core cover 8 and rotate, and reaches the purpose of unblanking to drive the shift fork 1 on the lock core cover 8.After pulling out key 17, blade 11 makes the horizontal bolt 12 of lock core groove 14 all break away from the ∨ type grooves 16 of blades 11 again, and locking side column 7 is risen under the effect of return spring 15, and the position when getting back to locking reaches the purpose of locking.The utility model is after locking, preferably rotate lock core, make the position of groove 14 release lock core retainer plates 8 through holes 18 on the lock core 9, make its theftproof performance bring into play better, the utility model is simple in structure, its theftproof performance and security performance are very good, compared with prior art, have substantive distinguishing features and progress.

Claims

1, a kind of lock, have lock housing (10) and lock core (9), it is characterized in that being provided with lock core cover (8) between described lock core (9) and the lock housing (10), described lock core cover (8) and the coaxial installation of lock core (9), have through hole (18) on the described lock core cover (8), this through hole (18) communicates with lock core cover endoporus (3), the inwall of described lock core (9) and lock housing (10) is provided with groove (14,4), be provided with locking side column (7) in the described through hole (18), the groove of described lock-shell lining is provided with elastic device in (4), be provided with horizontal bolt (12) in the groove of described lock core (14), be provided with blade (11) between lockhole of described lock core (13) and the groove (14), its end face when locking of the horizontal bolt (12) on the described lock core (9) overlaps with lock core (9) excircle arc surface, and described lock core cover (8) is provided with shift fork (1).

2, lock according to claim 1, a side that it is characterized in that described blade (11) is provided with ∨ type groove (16), the inboard of described horizontal bolt (12) is the ∧ type, can match with the ∨ type groove (16) on the blade (12), the opposite side of described blade (11) is provided with step, is provided with return spring (15) below described step.

3, lock according to claim 1 is characterized in that described elastic device is to be provided with briquetting (6) in lock housing (10) inboard wall groove (4), and be provided with spring (5) in the groove of briquetting (6).