CN1289882A

CN1289882A - Antitheft sylinder lock and key

Info

Publication number: CN1289882A
Application number: CN 99115581
Authority: CN
Inventors: 雷先鸣
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-09-29
Filing date: 1999-09-29
Publication date: 2001-04-04
Anticipated expiration: 2019-09-29
Also published as: CN1117911C

Abstract

An antitheft lock has an improved locking unit to control the rotation of lock core. Said locking unit is composed of cylinders and locking side piles. Each cylinder has a V-shaped slot. The V-shaped slots of cylinders are coincided with each other on not by key, which can drive side piles to move, so controlling rotation or jam of lock core. The key matched with hole on lock has teeth and guide slot on its front and arc back. Its advantage is high antitheft effect.

Description

A kind of anti-theft cylinder lock and key

The invention belongs to a kind of lockset, particularly relate to a kind of cylinder lock and key.

Cylinder lock is a kind of common lockset, common cylinder lock head locks lock core by pellet shot from a slingshot and rotates, each pellet shot from a slingshot group in the lock is by two compositions, when unblanking, the contact surface of two pellets shot from a slingshot overlaps with the contact surface of lock core and lock body, and lock core can rotate relative to lock body, during locking, the contact surface of two pellets shot from a slingshot does not overlap with the contact surface of lock core and lock body, because the barrier effect of pellet shot from a slingshot, lock core cannot rotate.This problem that is latched in is, open with the unlocking tool cover of non-matching key easily, as master key, Unlocking gun etc., because two pellets shot from a slingshot that these unlocking tools can both make each pellet shot from a slingshot group are one by one in the dislocation of the contact surface place of lock core and lock body, all overlap with the contact surface of lock core and lock body until their contact surface.In addition, the lockhole on this tapered end is positioned at lock core middle part through the lock core center line, the installation site of shift fork on lockhole, with unlocking tool by lockhole under the strike of external force, the lock core shift fork can be washed out, fast lock is opened with special tool then.With the two sides of supporting its spoon of the key sheet of this tapered end gathering sill is arranged all, tartar is positioned at a side of spoon sheet.Because of there being above-mentioned deficiency, the security performance of this cylinder lock and theftproof performance are all bad.

The purpose of this invention is to provide a kind of new cylinder lock head and key with matching, this tapered end has the locking device that the control lock core after the improvement rotates, can prevent that the lock core shift fork from being washed out by unlocking tool, its security performance and theftproof performance all lock than existing pellet shot from a slingshot.

The technical scheme of cylinder lock head of the present invention comprises lock body, lock core, pellet shot from a slingshot, the pellet shot from a slingshot return spring, shift fork, lock body circular hole inboard has the square groove, have the side column groove on the lock core, the pellet shot from a slingshot hole, the side column groove is inboard to communicate with the side in pellet shot from a slingshot hole, and with pellet shot from a slingshot hole approximate vertical, the side column groove outside can be corresponding with the square groove of lock body circular hole inboard, one circle ∨ type groove is all arranged on each pellet shot from a slingshot, be provided with locking side column in the side column groove, the inboard of locking side column is the ∧ type, can match with the ∨ type groove on the pellet shot from a slingshot, the outside of locking side column is a square, can match with the square groove of lock body circular hole inboard, locking side column is provided with step, and is fixed with pressing plate on the corresponding side column groove of the step outside, between the step of pressing plate and locking side column, be provided with the locking side column return spring, the edge that lockhole on the lock core is positioned at lock core is semiclosed shape, and the hole flank of tooth is vertical with the pellet shot from a slingshot group, and the installation site of lock core upper shift fork is not on lockhole.

With the key that above-mentioned cylinder lock head matches, its tartar, gathering sill all are positioned at the front of key piece, and the reverse side of key piece is a circular arc type.

During above-mentioned cylinder lock head locking, the side column groove on the lock core is corresponding with the square groove of lock body inboard, and the inboard of locking side column is under the compressing of pellet shot from a slingshot outer wall, and its outside is stretched in the lock body square groove, and lock core can not rotate.When unblanking, after key inserts lockhole, tartar on the key forces the shift in position of each pellet shot from a slingshot, at this moment, the ∨ type groove on the pellet shot from a slingshot all overlaps, and is on the straight line, locking side column is under the effect of return spring, its ∧ type inboard is slipped in the ∨ type groove on the pellet shot from a slingshot, withdraws in lock body square groove in the outside of locking side column, and lock core can rotate.

After key inserted lockhole, the circular arc type of key piece reverse side became the part of lock core and matches with the circular hole cambered surface of lock body, can freely rotate in the lock body circular hole with lock core.

The present invention is because the locking device that has adopted locking side column to rotate as the control lock core, with the unlocking tool of non-matching key each pellet shot from a slingshot located simultaneously, and the ∨ type groove on it all overlapped, so lock can not be opened; Because lockhole is positioned at the edge of lock core, the installation site of lock core upper shift fork uses unlocking tool shift fork to be washed out via lockhole not on lockhole again.Therefore, this cylinder lock has good safety and theftproof.

Further specify technical scheme of the present invention below in conjunction with accompanying drawing.

Fig. 1 is the structural representation of cylinder lock head of the present invention and key.

Fig. 2 is the A-A sectional view of Fig. 1.

Accompanying drawing discloses one embodiment of the present of invention, cylinder lock head comprises lock body 1, lock core 5, pellet shot from a slingshot 3, pellet shot from a slingshot return spring 6, spring die 7, shift fork 19, lock body 1 circular hole inboard has square groove 9, have side column groove 15 on the lock core 5, pellet shot from a slingshot hole 16, side column groove 15 inboards communicate with the side in pellet shot from a slingshot hole 16, and with pellet shot from a slingshot hole 16 approximate vertical, side column groove 15 outsides can be corresponding with the square groove 9 of lock body 1 circular hole inboard, each pellet shot from a slingshot 3 all has a circle ∨ type groove 4 on diverse location, be provided with locking side column 14 in the side column groove 15, the inboard 8 of locking side column 14 is the ∧ type, can match with the ∨ type groove 4 on the pellet shot from a slingshot 3, the outside of locking side column 14 is a square, can match with the square groove 9 of lock body 1 circular hole inboard, the two ends of locking side column 14 are provided with step 13, with be fixed with pressing plate 11 on step 13 corresponding lock core side column grooves 15 outsides, between the step 13 of pressing plate 11 and locking side column, be provided with locking side column 14 return springs 10, the edge that lockhole 17 on the lock core 5 is positioned at lock core 5 is semiclosed shape, its hole flank of tooth is vertical with the pellet shot from a slingshot group, shift fork 19 is installed in the end face center of lock core 5, and this position is not on lockhole 17.

The key 12 that matches with above-mentioned cylinder lock head, its tartar 2, gathering sill 18 all are positioned at the front of key piece, and the reverse side of key piece is a circular arc type.

Tapered end among the figure is in opening, tartar 2 on the key 12 is arranged each pellet shot from a slingshot 3 in order, ∨ type groove 4 on the pellet shot from a slingshot 3 all overlaps, locking side column 14 is under the effect of return spring 10, its ∧ type inboard 8 is slipped in the ∨ type groove 4 on the pellet shot from a slingshot 3, locking side column 14 is withdrawn in the lock core 5 in the square groove 9 of lock body 1 circular hole inboard, and lock core 5 can rotate.During locking, the scale of alignment lock core 5 and lock body 1, when key 12 was extracted in the direction of arrows, pellet shot from a slingshot 3 moved down under the effect of return spring 6, forced locking side column 14 to move in the square groove 9 that stretches into lock body 1 circular hole inboard along the direction of arrow, and lock core 5 is stuck.

Claims

1, a kind of cylinder lock head, comprise lock body (1), lock core (5), pellet shot from a slingshot (3), pellet shot from a slingshot return spring (6), shift fork (19), it is characterized in that lock body (1) circular hole inboard has square groove (9), have side column groove (15) on the lock core (5), pellet shot from a slingshot hole (16), side column groove (15) is inboard to communicate with the side of pellet shot from a slingshot hole (16), and with pellet shot from a slingshot hole (16) approximate vertical, side column groove (15) outside can be corresponding with the square groove (9) of lock body (1) circular hole inboard, one circle ∨ type groove (4) is all arranged on each pellet shot from a slingshot (3), be provided with locking side column (14) in the side column groove (15), the inboard (8) of locking side column (14) is the ∧ type, can match with the ∨ type groove (4) on the pellet shot from a slingshot (3), the outside of locking side column (14) is a square, can match with the square groove (9) of lock body (1) circular hole inboard, locking side column (14) is provided with step (13), with be fixed with pressing plate (11) on the corresponding side column groove of step (13) (15) outside, between the step (13) of pressing plate (11) and locking side column (14), be provided with locking side column (14) return spring (10), the edge that lockhole (17) on the lock core (5) is positioned at lock core (5) is semiclosed shape, and the hole flank of tooth is vertical with pellet shot from a slingshot group (3), and the installation site of lock core (5) upper shift fork (19) is not on lockhole (17).

2, a kind of key that matches with the described cylinder lock head of claim 1 is characterized in that tartar (2) on the key, the front that gathering sill (18) all is positioned at key piece, and the reverse side of key piece is a circular arc type.