CN203844878U - Anti-theft bicycle lock - Google Patents

Abstract

The utility model discloses an anti-theft bicycle lock which is composed of a lock pin and a lock body. The lock pin comprises a lock pin shell, a lock pin end face, a lock pin curved face and a protruding pin. The lock pin end face and the lock pin curved face are provided with lock pin grooves, and the protruding pin is fixed to the lock pin end face. The lock body comprises a lock body shell, a lock end face, a lock curved face and a cylinder. The lock curved face is located in the middle of the lock end face. The lock end face and the lock curved face are provided with lock grooves. The lock end face is provided with a lock hole matched with the protruding pin of the lock pin. The lock pin and the lock body form a sphere or a polyhedron when combined, and the protruding pin of the lock pin is plugged into the lock hole of the lock body when the lock pin and the lock body are combined. The anti-theft bicycle lock of the structure can not be sheared by any shearing tool due to the sphere or the polyhedron, the anti-theft bicycle lock is prevented from being damaged by shearing tools, and safety performance is improved.

Description

Anti-theft lock for bicycle

Technical field

The utility model relates to a kind of anti-theft lock for bicycle.

Background technology

Bicycle is the conventional walking-replacing tools of people, and user is often for loss is frustrated.The bicycle lock generally using at present mainly contains fork lock and chain lock, and fork locking fixes on the front fork and back vent of car, by lock and lock fork closure locking vehicle wheel rotation afterwards; Chain lock is steel wire and Steel chain lock, by the closure of chain lock, carrys out locking vehicle wheel rotation.Fork lock and chain lock are easily adopted cutting implement to destroy by lawless person, and safety factor is not high.

Utility model content

Technical problem to be solved in the utility model is: a kind of anti-theft lock for bicycle is provided, and this kind of anti-theft lock for bicycle can avoid cutting implement to destroy, and improved safety performance.

Solve this technical problem, the technical solution of the utility model is: a kind of anti-theft lock for bicycle, it is comprised of lock pin body and lockset body two parts, described lock pin body comprises lock pin body case, lock pin end face, lock pin curved surface and protrusion pin, described lock pin curved surface is positioned at the middle part of lock pin end face, on described lock pin end face and lock pin curved surface, have lock pin groove, described protrusion pin is fixed on lock pin end face, described lockset body comprises lockset body case, lockset end face, lockset curved surface and tapered end, described lockset body case, lockset end face and lockset Surface forming lockset intracoelomic cavity, in described lockset intracoelomic cavity, place tapered end, described lockset curved surface is positioned at the middle part of lockset end face, on described lockset end face and lockset curved surface, there is lockset groove, on described lockset end face, there is the lockhole coordinating with the protrusion pin of lock pin body, described lock pin body and lockset body form spherical or polyhedron while closing, when lock pin body and lockset body close, the protrusion pin of lock pin body is inserted in the lockhole of lockset body.Like this, lock pin body and lockset body are protected in protrusion pin under spherical or multi-plane shape after closing.

Described lock pin body case, lock pin end face and lock pin Surface forming lock pin intracoelomic cavity, arrange electronic alarm in described lock pin intracoelomic cavity.

In described lock pin intracoelomic cavity, torch is set.

The tapered end of described lockset body is turntable coded lock.

The edge of the lockset end face of described lockset body is provided with annular security bar, or adopts the boss structure of pick-proof, to prevent that picklock from touching protrusion pin.

A kind of anti-theft lock for bicycle of the utility model adopts such structure, and lock is embraced and pinned rear wheel or front vehicle wheel, a spoke on the wheel in addition of being embraced.After lock pin inserts, lock pin body and lockset body are combined, and form spherical or polyhedron.Spherical or polyhedral lock is protected in protrusion pin under spherical or polyhedral profile, and sphere or polyhedron cannot be sheared various cutting implements, have prevented strong destruction protrusion pin.Spherical or polyhedral maximum outside diameter is greater than the front and rear fork width of bicycle wheels both sides, and bicycle can be lockable, and can avoid cutting implement to destroy, and has improved safety performance.

Accompanying drawing explanation

Below in conjunction with accompanying drawing, a kind of anti-theft lock for bicycle of the utility model is described in further detail;

Fig. 1 is the use state contour structures schematic diagram of a kind of anti-theft lock for bicycle of the utility model;

Fig. 2 is the cross-sectional schematic of the lock pin body shown in Fig. 1;

Fig. 3 is the structural representation of the lockset body shown in Fig. 1;

In Fig. 1, Fig. 2, Fig. 3,1, lock pin body; 2, lockset body; 3, protrusion pin; 4, lock pin body case; 5, lock pin end face; 6, lock pin intracoelomic cavity; 7, electronic alarm; 8, lock pin groove; 9, lock pin curved surface; 10, lockset body case; 11, lockset end face; 12, lockset groove; 13, lockset curved surface; 14, lockhole.

the specific embodiment

As shown in Figure 1, Figure 2, Figure 3 shows, the utility model anti-theft lock for bicycle is comprised of lock pin body 1 and lockset body 2 two parts, lock pin body 1 comprises lock pin body case 4, lock pin end face 5, lock pin curved surface 9, protrusion pin 3 and electronic alarm 7, lock pin body case 4 adopts semisphere, lock pin body case 4, lock pin end face 5 and lock pin curved surface 9 form lock pin intracoelomic cavity 6, in lock pin intracoelomic cavity 6, there is electronic alarm 7, lock pin curved surface 9 is positioned at the middle part of lock pin end face 5, on lock pin end face 5 and lock pin curved surface 9, have lock pin groove 8, protrusion pin 3 is fixed on lock pin end face 5.Lockset body 2 comprises lockset body case 10, lockset end face 11, lockset curved surface 13 and tapered end, lockset body 2 shells 4 adopt semisphere, lockset body case 10, lockset end face 11 and lockset curved surface 13 form lockset intracoelomic cavity, in lockset intracoelomic cavity, there is tapered end, tapered end can adopt rotary disk type puzzle lock or key lock, lockset curved surface 13 is positioned at the middle part of lockset end face 11, on lockset end face 11 and lockset curved surface 13, there is lockset groove 12, on lockset end face 11, there is the lockhole 14 coordinating with the protrusion pin 3 of lock pin body 1.

Anti-theft lock for bicycle adopts said structure; during use, the protrusion pin of the lock pin body of anti-theft lock for bicycle is inserted in the lockhole of lockset body; lock pin body and lockset body are combined; form spherical; lock pin curved surface and lockset curved surface are embraced and are pinned rear wheel or front vehicle wheel; a spoke on the wheel in addition of being embraced; a spoke on wheel is between lock pin groove and lockset groove; spherical lock is protected in protrusion pin under spherical profile; sphere cannot be sheared various cutting implements, has prevented strong destruction protrusion pin.Spherical external diameter is greater than the front and rear fork width of bicycle wheels both sides, and bicycle can be lockable.If adopt turntable coded lock on tapered end, do not use key, there is no key hole, cannot unblank with common method for unlocking, can further improve the safety performance of anti-theft lock for bicycle.

The utility model anti-theft lock for bicycle is not limited to said structure, in the lock pin intracoelomic cavity of lock pin body, can arrange torch, and lock pin body also can be made solid, without lock pin intracoelomic cavity.Also the profile of the lockset body of lock pin body can be made to polyhedral structure.In order further to increase safe shape, the edge of the lockset end face of lockset body can be provided with annular security bar, or adopts the boss structure of pick-proof, when lock pin body and lockset body close like this, can't see protrusion pin, prevents that picklock from touching protrusion pin.

Claims (5)

1. an anti-theft lock for bicycle, it is characterized in that: it is comprised of lock pin body and lockset body two parts, described lock pin body comprises lock pin body case, lock pin end face, lock pin curved surface and protrusion pin, described lock pin curved surface is positioned at the middle part of lock pin end face, on described lock pin end face and lock pin curved surface, have lock pin groove, described protrusion pin is fixed on lock pin end face, described lockset body comprises lockset body case, lockset end face, lockset curved surface and tapered end, described lockset body case, lockset end face and lockset Surface forming lockset intracoelomic cavity, in described lockset intracoelomic cavity, place tapered end, described lockset curved surface is positioned at the middle part of lockset end face, on described lockset end face and lockset curved surface, there is lockset groove, on described lockset end face, there is the lockhole coordinating with the protrusion pin of lock pin body, described lock pin body and lockset body form spherical or polyhedron while closing, when lock pin body and lockset body close, the protrusion pin of lock pin body is inserted in the lockhole of lockset body.

2. anti-theft lock for bicycle according to claim 1, is characterized in that: described lock pin body case, lock pin end face and lock pin Surface forming lock pin intracoelomic cavity, arrange electronic alarm in described lock pin intracoelomic cavity.

3. anti-theft lock for bicycle according to claim 2, is characterized in that: in described lock pin intracoelomic cavity, torch is set.

4. anti-theft lock for bicycle according to claim 1, is characterized in that: the tapered end of described lockset body is turntable coded lock.

5. according to claim 1 or 2 or 3 or 4 arbitrary described anti-theft lock for bicycle, it is characterized in that: the edge of the lockset end face of described lockset body is provided with annular security bar.