CN2088148U - Theft-proof cycle lock - Google Patents

Abstract

The utility model discloses a theft-proof bicycle lock, belonging to a theft-proof tool for the bicycle. The process engineering of coating a lock beam and lock pin in a lock body can not be solved at present, the utility model adopts the tightly locking structure of a top bolt, that is to say the top of the lock beam is inserted in the lock body and is pinned. The utility model can efficiently protect the bicycle lock from unclenching, having the advantages of simple manufacturing process and low cost, which is easy to be produced in great numbers.

Description

Theft-proof cycle lock

The utility model belongs to a kind of anti-theft lock for bicycle, can be widely used on the various bicycles.

At present the iron sheet shell of the bicycle lock that generally uses is very easily opened by sledge, and after the iron sheet shell opened by sledge, and the lock bridge pin of stumbling promptly comes out, and pushes the pin of stumbling aside, and lock promptly is opened, and this is to cause the easy sledge of bicycle lock and the main cause of losing bicycle.

The technology of containing in lock body because of pin that lock bridge is stumbled can not solve, and at this problem, the utility model has adopted top latch locking mechanism, and promptly insert in the lock body by pinning on the lock bridge top, thereby can prevent effectively that lock from being opened by sledge.

The utility model is to realize like this, Fig. 1 is a bicycle internal construction schematic diagram, wherein, 1. extension spring, 2. lower casing, 3. key, 4. lock body, 5. stage clip, 6. lock core, 7. stumble piece, 8. lateral pin, 9. stage clip, 10. perpendicular pin, 11. lock bridges, 12. spanners, 13. lock bridge breach of lock core, 14. lock beam holes.On lock body, there is a diameter to be a bit larger tham the lock beam hole of lock bridge, have a breach on the top of lock bridge, making lock bridge can enter the lock body certain depth is stumbled the lock bridge breach by lateral pin and can't dial by sledge, one end of lateral pin is connected on the inwall of lock body by stage clip (5), and lateral pin and lock core directly spread out in lock body and connect, can drive the lateral pin move left and right during rotary locking cylinder, when unblanking, use key rotation lock core, the interlock lateral pin is removed left, the lock bridge lock road that under the traction of extension spring, rebounds, lock is opened, and perpendicular simultaneously pin is by under stage clip (9) bullet, one end of perpendicular pin links to each other with an end of stage clip (9), the other end of stage clip (9) is fixed on the interior sidewall of lock body, and perpendicular pin stumbles lateral pin after under stage clip (9) bullet, lateral pin is not ejected to the right by stage clip (5), lock core can not reset, key is stayed in the lock core, when shutting, the lock bridge top will be erected pin and upwards be pushed up back, and lateral pin is promptly ejected to the right by stage clip (5), stumble the lock bridge breach, lock cuts out, and the lock core interlock resets simultaneously, extracts key.

The bicycle lock of this top of the utility model latch locking mechanism can reach anti-sledge effectively, antitheft purpose, and cost is low, and technology is simple, easily forms large-scale production.

Claims (3)

1, a kind of anti-theft bicycle lock, it is made up of lock body, extension spring, lower casing, lock bridge etc., it is characterized in that being equipped with in lock body lateral pin and perpendicular pin, and lateral pin is connected on the inwall of lock body by stage clip (5) and stage clip (9) respectively with perpendicular pin.

2, anti-theft bicycle lock according to claim 1 is characterized in that lateral pin and lock core directly spread out to connect in lock body.

3, anti-theft bicycle lock according to claim 1 is characterized in that having a breach on the top of lock bridge.

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