Patent ID: 7295353

Claim:
A movable locking device, to affix a moving mechanical part inside a scanner, wherein the scanner has a lifting cover and a platform, the scanner including a hinge set to allow the lifting cover to rotate relatively to the platform, a holding rod of the hinge set disposed in an inserting hole on the platform, the locking device comprising: a movable structure member, coupled with the holding rod, wherein the holding rod is used as an axis of rotation, and a stopping piece is implemented at a sidewall of the movable structure member; and a buckling groove, located on the moving mechanical part, comprising a passing groove and a fixing groove, in which the shapes and the positions of the passing groove and the fixing groove are with respect to the stopping piece, wherein a moving direction of the passing groove is parallel to a moving direction of the movable structure member, and the movable structure member also has an opening at a side thereof, wherein the fixing groove is perpendicular to the moving direction of the movable structure member, wherein when the stopping piece is disposed into the passing groove, the movable structure member is movable, and wherein when the stopping piece is disposed into the fixing groove, the movable structure member is stopped by the stopping piece.