Disc drive unit and disc recording and/or reproducing apparatus

Abstract

Disc drive units out of the tolerance for assembling errors are rejected by narrowing the skew regulation range for them. Such a disc drive unit comprises a base plate, an optical pickup for writing a signal on and/or reading a signal from the optical disc, a pair of guide shafts for allowing the optical pickup to slide in a radial direction of the optical disc, support means, each being adapted to support the corresponding one of the guide shafts by pinching the opposite ends of the guide shaft between itself and the base plate, urging members for urging the respective ends of the guide shafts in the sense of the height thereof, regulation members for regulating the supported positions of the ends of the guide shafts, a skew regulation means having respective bearing sections including respective holding holes for holding the respective urging members, respective guide slits for receiving and guiding the respective ends of the guide shafts and respective insertion holes exposed to the respective holding holes and applied to receive the respective regulation members and limiting sections arranged between the base plate and the corresponding respective support means and adapted to limit the respective movable ranges of the guide shafts driven to move by the respective skew regulation means in the sense of the height thereof.