Patent ID: 6959567

Claim:
A detachable lid device for a locking core mechanism comprising: a plurality of combining portions provided on an outer end circumference of a locking core, and a key way having a lower end aligned with one of the combining portions; an outer annular wall arranged on the lid device, and in assembling operation, the outer annular wall is corresponding to the outer end circumference of the locking core; a plurality of engaging portions provided on the outer annular wall, and when the lid device covers the outer end of the locking core, the engaging portions are engaged with the corresponding combining portions, thereby one of the engaging portions is adjacent and aligned with the lower end of the key way of the locking core; and an inner annular wall arranged within the outer annular wall of the lid device, and in assembling operation, the inner annular wall is corresponding to an inner annular groove of the locking core which is in communication with the lower end of the key way; wherein in disassembling operation, the lower end of the key way permits inserting a tool to hook and pull a portion of the inner wall of the lid device aligned with the one engaging portion, thereby said one engaging portion is easily disengaged from the combining portion of the locking core without damage to the structure of the lid device.