CN2658306Y

CN2658306Y - Clutch anti-rotational-shear lock

Info

Publication number: CN2658306Y
Application number: CN 200320117407
Authority: CN
Inventors: 黄宜益
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-10-23
Filing date: 2003-10-23
Publication date: 2004-11-24
Anticipated expiration: 2013-10-23

Abstract

The utility model discloses a clutch anti-rotational-shear lock, including a lock shell, a lock barrel inside the cavity of the lock shell, a lock core connected with the lock barrel through a locking element, a yoke shifter connected to the rear end of the lock core, and a clutch base clamped on the rear end of the lock shell. The front end face of the clutch base connects with the rear end face of the lock barrel, with a jointing surface of a convex and concave shape; the lock barrel can rotate relatively to the clutch base; a through hole is provided on the clutch base; and the yoke shifter passes through the through hole to be mounted on the clutch base and can rotate inside the through hole. When the lock barrel rotates, the lock barrel will move together with the clutch base along the axis. On the clutch base, a reset mechanism is connected which enables the clutch base and the yoke shifter to return to the jointing state. The utility model can release forced rational torsion on the lock core, thus avoid intentioned damage to the lock head. The utility model is widely applied in the production of locksets.

Description

The disengaging type anti-rotational-shear lock

Technical field

The utility model relates to a kind of tapered end, particularly a kind of anti-theft lock end of sabotaging of preventing.

Background technology

Tapered end in the market mainly is made up of lock housing, lock core, lock tube and shift fork, lock core could rotate when the locking member between lock core and the lock tube is in ad-hoc location simultaneously, thereby driving the fork running opens lockset, but this tapered end exists the not technical disadvantages of pick-proof, as various tapered ends such as computer spoon, wisdom spoon, cross-keys, when stealer inserts lock core hole with key or with the similar instrument of key, as long as clamp key and twisting with instruments such as spanner, hawkbills, locking member is damaged, thereby lockset is opened by force.

Summary of the invention

The purpose of this utility model is to provide a kind of can unload the power of turn-knob by force of moving back lock core, prevents the anti-theft lock end that sabotages.

The technical scheme that the invention for solving the technical problem adopted is: the disengaging type anti-rotational-shear lock comprises lock housing, and the lock tube is arranged in the lock shell cavity, and the lock tube is connected with lock core by locking member, and the lock core rear end is connected with fork; Lock housing is connected with the clutch seat at the back-end location place of lock tube, the clutch seat moves along axis in lock housing only, the front end face of clutch seat engages with the rear end of lock tube, the mating face becomes concaveconvex shape, and the clutch seat rotation relatively of lock tube has a through hole on the clutch seat, fork passes through hole and is stuck on the clutch seat, and can in through hole, rotate, move along axis with the clutch seat when when rotation lock tube, be connected with on the clutch seat and make clutch seat and fork get back to the return mechanism of engagement state.

The beneficial effects of the utility model are: because the lock tube becomes concaveconvex shape with the mating face of clutch seat, when the key that mismatches inserts lock core hole and turn-knob, lock core is subjected to the obstruction of locking member and drives the rotation together of lock tube, under the effect of concavo-convex mating face, the clutch seat drives fork and moves along axis together, and fork is separated with lock core, and lock core and lock tube just dally in lock housing, thereby can unload the power of turn-knob by force of moving back, prevent sabotaging tapered end to lock core.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and Examples.

Fig. 1 is the three-dimensional broken away view of the utility model embodiment;

Fig. 2 is another angle of the three-dimensional broken away view of the utility model embodiment.

The specific embodiment

With reference to Fig. 1, Fig. 2, the disengaging type anti-rotational-shear lock comprises lock housing 1, and lock tube 2 is arranged in lock housing 1 chamber, and lock tube 2 can rotate in lock housing 1 chamber; Lock tube 2 is connected with lock core 3 by locking member, and lock core 3 rear ends are connected with fork 5, and locking member can be shell fragment or the pellet shot from a slingshot that uses on the present market, when the lock core locking member is in ad-hoc location simultaneously, lock core 3 lock tube 2 rotations relatively, thus drive fork 5 runnings, lockset is opened; The back-end location place of lock housing 1 is connected with clutch seat 8, and the front end face of clutch seat 8 engages with the rear end face of lock tube 2, and the mating face becomes concaveconvex shape; One through hole 9 is arranged on the clutch seat 8, and fork 5 passes through hole 9 and is stuck on the clutch seat 8, and can rotate in through hole 9, moves along axis with clutch seat 8 when 2 rotations of lock tube, is connected with on the clutch seat 8 to make clutch seat 8 and fork 5 get back to the return mechanism of engagement state.

Lock core 3 is that lock core 3 is fixedly connected with turning cylinder 4 with the connected mode of fork 5, have on the fork 5 and turning cylinder 4 corresponding grooves 6, turning cylinder 4 is positioned at groove 6, can drive fork 5 when making lock core 3 rotations and rotate together, and fork 5 can separate with lock core 3 with clutch seat 8 again when clutch seat 8 moves.Can certainly not establish turning cylinder 4, and directly make lock core 3 tail ends square or other shape that can match with the groove 6 on the fork 5 is connected both, also can adopt other common frame for movement to connect, such as riveted joint.

Fork 5 is that a cannelure 7 is arranged on the fork 5 at the mounting means on the clutch seat 8, after an end of fork 5 passes the through hole 9 of clutch seat 8, the spring washer 10 of packing in cannelure 7 afterwards forms a boss, fork 5 is stuck on the clutch seat 8, and fork 5 can rotate in through hole 9 and move along axis with clutch seat 8.Certainly, can adopt other common frame for movement to connect,, in the hole, insert bearing pin fork 5 is stuck on the clutch seat 8 such as on fork 5, being provided with the hole.

Clutch seat 8 is that card article 12 is arranged on the clutch seat 8 with the snap fit of lock housing 1, on lock housing 1 inwall draw-in groove 13 is arranged, and card article 12 is positioned at draw-in groove 13, clutch seat 8 can only be moved along axis in lock housing 1, and can not rotate, and card article 12 and draw-in groove 13 can be for one or more.Certainly, also can all be provided with groove, in the middle of two grooves, insert rib then and block at clutch seat 8 and lock housing 1 inwall corresponding position.

Clutch seat 8 becomes concaveconvex shape with the mating face of lock tube 2, when lock core 3 is subjected to by force turn-knob power, lock core 3 drives 2 rotations of lock tube, owing to clutch seat 8 can not rotate, therefore, under the effect on concavo-convex mating face, the just relative lock tube 2 of clutch seat 8 produces axial displacements, and it is mobile together to drive fork 5, and fork 5 is separated with lock core 3, at this moment lock core 3 and just rotation voluntarily in lock housing of lock tube 2 unload the power of turn-knob by force of having moved back lock core.

Return mechanism is the end face that an end withstands on clutch seat 8, the other end withstands on the compression spring 11 on tapered end and the lockset, when lock tube 2 relative clutch seats 8 rotate and make clutch seat 8 produce axial displacements, insert a little with any key and also rotate proper angle, under the elastic force of compression spring 11, clutch seat 8 just can be got back to engagement state automatically.Certainly; return mechanism also can be the flexible member that is fixed on the lock housing; such as shell fragment; flexible member links to each other with clutch seat 8 or fork 5; realize above-mentioned return, also can adopt other common frame for movement, no matter but use which kind of mode; so long as reach technique effect of the present utility model, all should belong to protection domain of the present utility model with essentially identical means.

Claims

1, the disengaging type anti-rotational-shear lock, comprise lock housing (1), lock tube (2) is arranged in lock housing (1) chamber, lock tube (2) is connected with lock core (3) by locking member, lock core (3) rear end is connected with fork (5), the rear end that it is characterized in that lock housing (1) is connected with clutch seat (8), the front end face of clutch seat (8) engages with the rear end face of lock tube (2), the mating face becomes concaveconvex shape, lock tube (2) clutch seat (8) rotation relatively, one through hole (9) is arranged on the clutch seat (8), fork (5) passes through hole (9) and is installed on the clutch seat (8), and can in through hole (9), rotate, when lock tube (2) rotation, move along axis with clutch seat (8), be connected with on the clutch seat (8) and make clutch seat (8) and fork (5) get back to the return mechanism of engagement state.

2, disengaging type anti-rotational-shear lock according to claim 1, it is characterized in that the described lock core (3) and the connected mode of fork (5) are: turning cylinder (4) is arranged on the lock core (3), and fork (5) is gone up fluted (6), and turning cylinder (4) is positioned at groove (6).

3, disengaging type anti-rotational-shear lock according to claim 1, it is characterized in that described fork (5) at the mounting means on the clutch seat (8) is: a cannelure (7) is arranged on the fork (5), boss of the back formation of the spring washer (10) of packing in the cannelure (7) is stuck on the clutch seat (8) fork (5).

4, disengaging type anti-rotational-shear lock according to claim 1, it is characterized in that the described clutch seat (8) and the snap fit of lock housing (1) are: card article (12) is arranged on the clutch seat (8), on lock housing (1) inwall draw-in groove (13) is arranged, card article (12) is positioned at draw-in groove (13).

5, disengaging type anti-rotational-shear lock according to claim 1 is characterized in that described return mechanism is that an end withstands on the clutch seat (8), and the other end withstands on the compression spring (11) on tapered end and lockset mating face (14).