CN201386430Y

CN201386430Y - Lock with anti-violence torsion device

Info

Publication number: CN201386430Y
Application number: CN200920140633U
Authority: CN
Inventors: 宁庆耀
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-03-25
Filing date: 2009-03-25
Publication date: 2010-01-20
Anticipated expiration: 2019-03-25

Abstract

The utility model discloses a lock with anti-violence torsion device, which comprises a lock pin, a marble, a casing and a shifting shaft, and further comprises a resistance sleeve arranged between the lock pin and the casing, wherein a resistance groove which corresponds to the marble is arranged on the resistance sleeve, and the rear end surface of the resistance sleeve is provided with symmetrical arc-shaped depressions, and a clutch which is arranged between the rear end surface of the lock pin and the bottom surface of the casing, an arc-shaped convex block which corresponds to the arc-shaped depressions is arranged on the clutch, the lock pin shifting shaft penetrates through the bottom surface of the casing and the center of the clutch, is engaged with a groove arranged on the center of the rear end surface of the lock pin through a square-flat shaped rabbet arranged on the front end, and is controlled by the clutch. When a non-matched key or other object is turned in the lock, the lock pin and the resistance sleeve are driven to rotate, the arc-shaped depressions of the resistance sleeve also rotate, the clutch and the lock pin shifting shaft are rearwards pushed, the rabbet and the corresponding groove arranged on the rear end surface of the lock pin are separated, and the rotation of the lock pin can not drive the lock pin shifting shaft to rotate, thereby preventing turning to unlock by violence. The lock is suitable for various spring locks.

Description

The lock that has anti-violence torsion device

Technical field

The utility model relates to a kind of door lock, especially the lock of shell fragment type.

Background technology

The lock of shell fragment type is with simple in structure, and the both sides key bit of key and the shell fragment in the lock core are combined with a lot of variations, and repetitive rate is lower, uses also very convenient.Therefore, the shell fragment lock is widely used on the tapered end of door, automotive door and activity.But owing to the keyhole that is the shell fragment lock is wide straight, undesirable's special screwdriver straight cuttings more commonly used reverse by force just can easily shell fragment be turned round badly and unblank in keyhole, implement it and steal purpose.

The utility model content

The purpose of this utility model provides a kind of lock that has anti-violence torsion device, and it can overcome the weak point of above-mentioned shell fragment lock, plays and strengthens antitheft effect.

The technical solution of the utility model is:

A kind of lock that has anti-violence torsion device, it comprises lock core, shell fragment, shell and lock core shifting shaft, it is characterized in that also comprising:

Be located at the cylindrical shape resistance cover between described shell inboard and the lock core outside, the side of this resistance cover is provided with the symmetrical resistance groove corresponding with described shell fragment, is provided with the arc-shaped recess of two symmetries on the rear end face of this resistance cover;

Be located at the clutch part between described lock core rear end face and the inboard, shell bottom surface, the arc bump of two symmetries that this clutch part is provided with on the face relative with the lock core rear end face, corresponding with the rear end face symmetry arc-shaped recess of described resistance cover;

Described lock core shifting shaft passes the center of shell bottom surface and clutch part, by the square flat tenon and the supercentral groove fit of lock core rear end face of front end, and the groove fit on this tenon and the lock core rear end face, and be subjected to the control of clutch part.

In the middle of the described clutch part is disc, and the two ends of an end face are provided with described two symmetrical arc bumps, and the two ends on the other end are provided with two backstays with the end face vertical symmetry, and this backstay passes corresponding hole, shell bottom surface activity orientation.

The lock that has anti-violence torsion device of above structure after this lock key inserts keyhole, is joined because key bit and shell fragment close, and key can drive the lock core shifting shaft that cooperates in lock core and the lock core rear end face upper groove and rotate, and can unblank.If the key that inserts or its thing and lock core shell fragment are mismatched, then the lock core shell fragment is overhanging, protrudes the lock core lateral surface and blocks mutually with the resistance groove of described resistance cover.Its thing is as above-mentioned special screwdriver.When key or its thing, can drive lock core and resistance cover rotates, and resistance overlaps when just rotation is a bit, thereafter the arc-shaped recess of two symmetries is also rotated thereupon on the end face, the clutch part arc bump that cooperates with it in its arc-shaped recess is ejected arc-shaped recess, be about to clutch part and lock core shifting shaft also passes backward, the flat tenon of lock core shifting shaft front end is separated with corresponding groove on the lock core rear end face, the rotation of lock core can not drive the lock core shifting shaft and rotate, lock does not leave, the just idle running of rotation of lock core and resistance cover.Reverse the purpose of unblanking thereby reached anti-violence, also overcome shell fragment and be locked in this respect weak point, improved the theftproof performance of shell fragment lock.

Description of drawings

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

The specific embodiment

Below in conjunction with accompanying drawing, the utility model is described in further detail.

Shown in Figure 1, be structural representation of the present utility model.In the drawings as can be known, it comprises lock core 2, shell fragment 4, lock core shifting shaft 11 and and cylindrical housing 19 compositions.In lock core 2 rear end faces, be provided with groove 18 in the heart with lock core shifting shaft 11 front end side's flat tenon 17 corresponding matching.Between described shell 19 inboards and lock core 2 outsides, be provided with rotating tubular resistance cover 20, this resistance cover 20 be provided with the symmetrical rectangle resistance groove 5 corresponding up and down above the both sides with described shell fragment 4, on the rear end face of resistance cover 20, be provided with the arc-shaped recess 6 of two symmetries up and down.When each spoon groove shell fragment 4 corresponding with each that inserts key mismatched, each shell fragment 4 was protruding under the effect of shell fragment spring, shows especially in rectangle resistance groove 5, sees the shell fragment 3 that protrudes shown in the dotted portion among the figure.The shell fragment 3 of this protrusion can overlap 20 jams mutually with the resistance that can rotate, and lock core 2 and resistance cover 20 is rotated simultaneously.Shell fragment in the shell fragment lock has the effect of corresponding shell fragment spring in both sides, this is prior art and general knowledge, so do not express the shell fragment spring in the drawings.Shown in Fig. 1 is the situation of inserting shell fragment 4 cooperations corresponding with each of each spoon groove of key 1, the outer end of each shell fragment 4 is evagination not, the rotation of key 1 can drive lock core 2 and rotate, and cooperates 11 rotations of drive lock core shifting shaft with the insertion of lock core shifting shaft 11 front end side's flat tenons 17 by the supercentral groove 18 of lock core 2 rear end faces.The rear end of lock core shifting shaft 11 is set as square toes 12, and its rotation can drive and unblank.The clutch part 15 that between described lock core 2 rear end faces and 10 inboards, shell bottom surface, is provided with, the middle part of this clutch part 15 is a disc, the center is provided with open-work 16, the front end that can pass lock core shifting shaft 11 is also rotatable, on the face relative, be provided with the arc bump 7 of two symmetries with lock core 2 rear end faces, corresponding with the rear end face symmetry arc-shaped recess 6 of described resistance cover 20.At the two ends up and down of clutch part 15, be provided with the backstay 9 of the bottom surface 10 corresponding location open-works 8 that can pass shell 19.Location open-work 8 cooperates with backstay 9, and clutch part 15 can only be moved forward and backward, and can not rotate.Be provided with step cutting pattern 14 on lock core shifting shaft 11, its one side contacts with the trailing flank of clutch part 15, and another side is used for limiting an end that is enclosed within a upper spring 13, and the other end of spring 13 pushes up mutually with the inboard of shell bottom surface 10.The effect of spring 13 is that clutch part 15 is automatically reset, and its principle is: two arc bumps 7 of clutch part 15 are pushed out arc-shaped recess 6 as if the rotation because of resistance cover 20, and clutch part 15 is by step cutting pattern 14 pressuring springs 13 on the lock core shifting shaft 11; After resistance cover 20 resetted, the back-pressure of spring 13 is compeled power also automatically reset clutch part 15 and arc bump 7 thereof; Simultaneously, square flat tenon 17 is if be pushed out groove 18, and after resistance cover 20 resetted, square flat tenon 17 also automatically reset.

By the lock that above-mentioned the utility model structure and other member are formed, be the scope of the utility model protection.

Claims

1, a kind of lock that has anti-violence torsion device, it comprises lock core, shell fragment, shell and lock core shifting shaft, it is characterized in that also comprising:

Be located at the cylindrical shape resistance cover (20) between described shell (19) inboard and lock core (2) outside, the side of this resistance cover (20) is provided with the symmetrical resistance groove (5) corresponding with described shell fragment (4), is provided with the arc-shaped recess (6) of two symmetries on the rear end face of this resistance cover (20);

Be located at the clutch part (15) between described lock core (2) rear end face and the inboard, shell bottom surface (10), the arc bump (7) of two symmetries that this clutch part (15) is provided with on the face relative with lock core (2) rear end face, corresponding with the rear end face symmetry arc-shaped recess (6) of described resistance cover (20);

Described lock core shifting shaft (11) passes the center of shell bottom surface (11) and clutch part (15), square flat tenon (17) by front end cooperates with the supercentral groove of lock core (2) rear end face (18), this tenon (17) cooperates with groove (18) on lock core (2) rear end face, and is subjected to the control of clutch part (15).

2, the lock that has anti-violence torsion device according to claim 1 is characterized in that:

In the middle of the described clutch part (15) is disc, the two ends of one end face are provided with described two symmetrical arc bumps (7), two ends on the other end are provided with two backstays (9) with the end face vertical symmetry, and this backstay (9) passes corresponding hole (8), shell bottom surface (10) activity orientation.

3, the lock that has anti-violence torsion device according to claim 1 is characterized in that:

Be enclosed within that described lock core shifting shaft (11) is gone up and inboard, shell bottom surface (10) between, be provided with back-moving spring (13).