Battery cover assembly with a locking mechanism

A battery cover assembly for a portable electronic device, the battery cover assembly comprising:

• a housing having a planar surface defining a circular receiving hole;
• a removeable battery cover having a latching portion;
• a locking mechanism removeably latching the cover to the housing, the locking mechanism comprising:
• a disked-shaped operating member rotatably engaging in the circular receiving hole of the housing, the operating member including a locking block releasably and elastically abutting the latching portion;
• an elastic member, the elastic member arranged along one portion of an outer peripheral wall of the operating member, one end of the elastic member abutting the housing and the other end of the elastic member abutting the operating member, wherein the latching portion defines a cutout and inner edge, the locking block is received in the cutout and releasably abuts the inner edge, and wherein the circular receiving hole is co-planar with the planar surface, and the disked-shaped operating member lies in the planar surface.