US Patent 7380255 Disc positioning structure

A disc positioning structure includes a driver, a turntable and a positioning element. The turntable is disposed on the driver and used for placing a disc driven by the driver. The positioning element is disposed on the turntable and the disc is clamped onto the positioning element. The positioning element includes a first ring, a second ring and a plurality of spokes. Wherein, the second ring resides inside the first ring while the spokes are connected between the first ring and the second ring. The disc positioning structure provided by the present invention is able to compensate the positioning error of the disc and to reduce the production cost.