Lock core assembly

Abstract

A lock core assembly comprising: an external cylinder, an inner cylinder rotatably fitted in the external cylinder, a plurality of alignment elements provided in the inner cylinder, at least a limiting element provided in the external cylinder able to engage with the alignment elements, and a key to be inserted into the inner cylinder to move the alignment elements to positions making an unlocking state with the limiting element; the assembly is characterized by: the limiting element is assembled by means of an engaging member on the external cylinder meeting the specification of the key; when the engaging member is detached, the limiting element is separated from the external cylinder, then the original couple of the key and the limiting element are substituted by another couple of a key and a limiting element. Thereby, when a user loses his key, he can have the lock core assembly repaired without changing the entire lock set; this can reduce expenditure and avoid waste of resources. And external cylinders, inner cylinders and alignment elements can be manufactured by mass production to have uniform specifications; then various couples of limiting elements and keys are assembled with the said members to form different lock core assemblies. Thus an object of saving cost can be achieved.

Dependencies are inferred from the claim text.