Patent ID: 7392677

Claim:
A lock core structure having plural lock piece sets embedded therein, a key through hole and at least two embedding holes for proving space to at least two latch elements to move therein, the lock core, plural lock piece sets and latch element being tightly matched in a housing, wherein the lock piece set comprising: a division plate embedded in the lock core and having a key through hole for passing through a key, a first sliding track and a second sliding track, and fixing troughs located at the positions corresponding to the embedding slots for sliding therein the latch elements; a first lock piece having a sliding element mounted thereon for guiding thereof to slide along the sliding track on the division plate, a fist key rejecting shaft protrudently mounted at one side thereof near the key through hole, and a first embedding slot located at one side thereof corresponding to the fixing trough, and a second lock piece, mounted on the division plate opposite to the first lock piece, having a sliding element mounted thereon for guiding thereof to slide along the sliding track on the division plate, a second key rejecting shaft protrudently mounted at one side thereof near the key through hole, a second embedding slot located at one side thereof corresponding to the fixing trough, and a rejecting shaft for mounting an elastic element between the rejecting shaft and the first key rejecting shaft so as to form an interlocked structure between the first lock piece and the second lock piece.