US Patent 7305686 Optical disk player

An optical disc player includes a disc determining device for determined the size of an optical disc loaded into the optical disc player, a disc chucking device for the optical disc loaded into the optical disc player, and a disc chucking lever device for associating the disc determining device with the disc chucking device. The disc determining device is guided to the chucking position by the pins and members for locking the pins and positions of the pins for driving the chucking device are changed according to the size of the optical disc so that the optical disc player can be slim. Since the chucking plate, the chucking plate holder, and the plate springs of the disc chucking device for horizontally chucking the optical disc inserted into the optical disc player are thin, the optical disc player can be slim.