Lock structure
AssigneeTung Chu International Inc.
InventorChi-yuan Li
Life of this patent
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Abstract
An improved lock structure, and especially a lock structure in which a stepped shaped wall of the key hole in the lock core can be cooperated with a key to allow the key to be drawn out regardless of its angular position. The lock core can also be rotated from an unlocking position to a locking position without the key; convenience thus is increased. Besides, a plurality of pusher pins are allocated in multiple directions to increase the difficulty of unlocking by a thief, this can thereby increase theft-proof effect.
Claims5
An improved lock structure including a lock core, a sleeve slipping over said lock core, a casing slipping over said sleeve and a key, said lock is characterized by:
- said lock core has a key hole of which the wall is tapered from outside to inside of said lock core to have a stepped shape, when said key is inserted in said key hole, said key can be taken out regardless of its angular position;
- and after the key is taken out, said lock core can be rotated from an unlocking position to a locking position without the help of said key;
- and lock core including a flange outside of said sleeve having pusher pins arranged substantially parallel to the direction of the key hole.
Dependencies are inferred from the claim text.