Patent ID: 7522483

Claim:
A disc drive unit comprising: a base plate; a disc rotary drive mechanism for holding an optical disc and driving the optical disc to rotate; an optical pickup for writing a signal on and/or reading a signal from the optical disc by focusing the light beam emitted from a light source on the signal recording surface of the optical disc by means of an objective lens and detecting the returning beam of light reflected by the optical disc; a pair of guide shafts arranged at the lower surface side of the base plate to allow 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 at the lower surface side of the base plate by pinching the opposite ends of the guide shafts between itself and the base plate; urging members arranged to abut the respective ends of the guide shafts from a direction substantially perpendicular to the main surface of the base plate and urging the respective ends of the guide shafts in a direction perpendicular to the main surface of the base plate; regulation members arranged to abut the respective ends of the guide shafts from the direction opposite to the direction substantially perpendicular to the main surface of the base plate and pressing the respective ends of the guide shafts in the direction opposite to the urging direction of the urging members so as to regulate the supported positions of the ends of the guide shafts; skew regulation means having respective bearings including respective holding holes for holding the respective urging members, respective guide slits exposed to the respective holding holes to receive the respective ends of the guide shafts and guide the respective ends of the guide shafts in a direction perpendicular to the main surface of the base plate and respective insertion holes exposed to the respective holding holes and adapted 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 a direction substantially in a direction perpendicular to the main surface of the base plate.