Patent ID: 7712340

Claim:
A lock structure, comprising: a lock body formed of a continuous unitary composition; the lock body having a lock hole on a middle portion; the lock body having crutch embedding holes on two sides of the lock hole thereof; the lock body having a receiving recessed portion at a first side thereof communicating with first ends of the lock hole and the crutch embedding holes; a lock core held in the lock hole of the lock body; the lock core having a plate part at a first end thereof; a locking crutch; the locking crutch including first and second ends to be inserted in the crutch embedding holes of the lock body respectively; each of the first and the second ends of the locking crutch having a groove thereon; the grooves being parallel to each other; first and second movable plates held in the receiving recessed portion of the lock body; the movable plates remaining offset one from the other by a space, the movable plates being biased towards the crutch embedding holes of the lock body by elastic elements to at least partially cover the crutch embedding holes; each of the movable plates having first and second joining protrusions; the elastic elements traversing the space between the movable plates to be joined to respective joining protrusions thereof, the elastic elements each being thereby captured between the movable plates to bias the movable plates towards corresponding ones of said crutch embedding holes; each of the movable plates having a stopping plate part disposed for displacement responsive to force exerted through the lock core; an upper cover secured on the first side of the lock body to cover the movable plates and the elastic; and a plurality of pin receiving holes formed through said lock body on a periphery thereof, and a plurality of saw-resistant pins being inserted in the pin receiving holes.