Patent ID: 8516512

Claim:
An optical disc drive, comprising: a chassis; an optical pickup head having at least one rail hole and a rail notch; a primary guide rail fixed on the chassis and penetrated through the rail hole; a first screw; and a secondary guide rail member fixed on the chassis, and comprising: a guide rail part embedded into the rail notch, so that the optical pickup head is movable on the primary guide rail and the guide rail part; a base part; an extension part having a first end connected with the base part and a second end connected with the guide rail part; and an elastic element disposed under the base part and contacted with the chassis, wherein a first compressible space is defined between the base part, the elastic element and the chassis and the elastic element is an L-shape element having one end connected to the base part, wherein the guide rail part, the base part, the extension part and the elastic element of the secondary guide rail member are integrally formed; wherein the first screw is penetrated through the base part and the first compressible space and screwed in the chassis, wherein by changing a screwed depth of the first screw in a screw hole, an altitude of the guide rail part is correspondingly adjusted.