Patent ID: 8249679

Claim:
A cover structure for portable electronic device comprising: a rotating member including a head portion, a column and two wings projecting from the column; a cover defining a through hole allowing the column and the wings to extend through, the head portion of the rotating member resisting the cover at one side; a retaining member, the retaining member clasping the column at another side of the cover to preventing the rotating member from separating from the cover; and a main housing defining a receiving hole surrounded by a sidewall and a bottom board, two blocks and two slopes formed in the receiving hole, the two blocks protruding from the sidewall, two protrusions projecting from the bottom board along the sidewall, each block including a second end surface, each protrusion including a top surface, and the second end surface and the top surface constituting the corresponding slope, the wings of the rotating member rotating along the slopes to be locked by the blocks when the cover is firmly attached to the main housing.