CN2120855U - Anti-theft lock for bicycle - Google Patents

Abstract

The utility model relates to the improvement of bicycle locks. The lock uses a lock core to poke a rolling key to open and close the bicycle lock directly. A crescent groove is milled on the juncture of a lock beam and the rear part of the combined body of the lock core and a lock head body to enable the lock beam to be contained in the crescent groove. A lock beam button is riveted with the lock beam into a whole by an upper lock shell to eliminate the disengagement of the lock beam from the upper lock shell. Because the upper lock shell, the lock beam and the lock body of the lock are combined into a tight closed ring, the lock beam is not easy to disengage from the locking position, which achieves the purpose of safe theft protection.

Description

Anti-theft lock for bicycle

The utility model relates to a kind of improvement of bicycle lock.

At present, general annular circular beam lock is to utilize the rotation of lock core to drive locking plate, finishes opening, locking of lock.If down lock housing is pried open or lock bridge is turned round the sled distortion, the lock bridge position that is easy to go out of lock loses the effect of lock.

The purpose of this utility model is to provide a kind of anti-theft bicycle lock, and antitheft effect is played in the not yielding position that goes out of lock of lock bridge.

The anti-theft bicycle lock that the utility model provides adopts the lock core direct dialing to roll the key swich lock.Assembly rear portion and lock bridge intersection with lock core and tapered end mill a crescent, and the lock bridge button is integral by last lock housing and lock bridge riveted.Make lock bridge can not break away from lock housing.The lock core cylinder directly embeds in the breach of lock bridge during locking, and lock bridge is closed in the lock housing.

In conjunction with the accompanying drawings, the utility model is to realize like this.By lock core 5, lock bridge 3, lock bridge spring 9, go up the anti-theft bicycle lock that lock housing 1 and following lock housing 10 are formed, lock core and tapered end 4 are embedded in decorations cover 8 and the last lock housing spot welding all-in-one-piece space, a breach is arranged on the lock bridge, proper and lock core engagement during locking, tapered end is wrapped in lock bridge simultaneously.Angle 30 degree places on lock core, lock bridge button 2 is integral by last lock housing and lock bridge riveted.

By the anti-theft bicycle lock that said structure is made, during locking, the lock bridge button drives lock bridge and slides in the crescent of tapered end, when the breach on the lock bridge slides into the lock core position, the cylinder of lock core embeds in the lock bridge breach under the effect of moving back core spring 6, and the locking lock bridge is finished locking.When unblanking, with key 7 rotary locking cylinders, make the lock core crescent facing to lock bridge, lock bridge is opened under the pulling force of lock bridge spring.

This lock is because last lock housing, lock bridge and lock body form a tight closed circuit ring, and the lock bridge position that can not go out of lock reaches the purpose of safe antitheft.

Description of drawings:

Fig. 1 anti-theft bicycle lock structural representation.

Fig. 2 A-A is to sectional view.

Fig. 3 B-B is to sectional view.

Claims (1)

1, a kind of anti-theft bicycle lock of forming by lock core 5, lock bridge 3, lock bridge spring 9, last lock housing 1 and following lock housing 10, it is characterized in that lock core and tapered end 4 are embedded in decorations cover 8 and the last lock housing spot welding all-in-one-piece space, a breach is arranged on the lock bridge, proper and lock core engagement during locking, tapered end is wrapped in lock bridge simultaneously, angle 30 degree places on lock core, lock bridge button 2 is integral by last lock housing and lock bridge riveted.