CN2204325Y - Anti-theft lock for bicycle - Google Patents

Abstract

The utility model relates to an anti-theft bicycle lock which is composed of a lock body, a lock core and a lock tongue. The utility model is characterized in that a connecting hole is arranged between a lock shell and a bicycle frame. A square blind hole lock chamber is arranged in the lock shell, and the lock body, the lock core and the lock tongue are arranged in the lock chamber. A lock slot is arranged in the middle of the lock shell, and a lock tongue slot on the lock body is a through hole. Compared with the prior art, the utility model has the advantages that the lock and the bicycle frame are combined into an indivisible whole, the lock tongue is in the state of concealment completely because the lock tongue moves in the lock slot of the lock shell, and the lock body and the lock core have the function of self locking.

Description

Anti-theft lock for bicycle

The utility model belongs to the lock class, is a kind of anti-theft lock for bicycle specifically.

The description of bicycle lock is quite a lot of in the market, and ordinary bicycle lock, chain lock, " theftproof lock " etc. are arranged, and its common characteristic has three: one, lock are independently two parts of separating with bicycle.Two, lock is exposed to the outside.All be the lock bicycle quick three,, actual theftproof performance is relatively poor.

The purpose of this utility model then is the problem at above-mentioned existence, and a kind of hidden, safe and reliable anti-theft lock for bicycle is provided.

The utility model technical solution:

A kind of anti-theft lock for bicycle of forming by lock body, lock core, dead bolt, it is characterized in that having connection holes between lock housing and the vehicle frame, have cubic blind hole lock chamber, lock body, lock core, dead bolt in the lock housing by being loaded in the lock chamber, have locked groove in the middle of the lock housing, the lock tongue slot on the lock body is a through hole.

The utility model has following advantage compared to existing technology:

1, lock and vehicle frame are formed an indivisible integral body.

2, dead bolt moves in the locked groove of lock housing, makes it be in hidden state fully.

3, lock body, lock core have auto-lock function.

Fig. 1 is the utility model structural representation.

Fig. 2 is Figure 1A-A sectional view.

Below in conjunction with accompanying drawing the utility model is further described:

Lock housing 1 is welded to form vehicle frame with vehicle frame front end connecting tube 6, vehicle frame preceding lower end connecting tube 7, and lock body 2, lock core 3, dead bolt 4 are put into the cubic blind hole lock chamber of lock housing 1, cover cover plate 5.The length of dead bolt 4 is slightly less than lock body 2, and the groove of stirring on the dead bolt 4 departs from the centre position, and lock body 2 is a square.When dead bolt 4 is moved forward in the locked groove that inserts front fork central siphon 8, pin left and right 45 ° of front fork central siphon 8() front fork can not be rotated, bicycle loses directionality.Make the front-wheel direction recover to rotate when dead bolt 4 moves backward, then dead bolt 4 inserts in the locked groove of lock housing 1, makes lock body 2, lock core 3 self-lockings.The minimum shearing force of dead bolt 4 needs greater than 1.5T as calculated.

Claims (2)

1, a kind of anti-theft lock for bicycle of forming by lock body, lock core, dead bolt, it is characterized in that having connection holes between lock housing and the vehicle frame, have cubic blind hole lock chamber in the lock housing, lock body, lock core, dead bolt are by being loaded in the lock chamber, have locked groove in the middle of the lock housing, the lock tongue slot on the lock body is a through hole.

2, anti-theft lock for bicycle according to claim 1 is characterized in that lock body is a square.

Images