Patent ID: 7203950

Claim:
A disk drive structure with an adjustable bearing structure for guide bars, comprising: a base; a spindle motor for bearing and rotating a disk; a guide bar for carrying an optical pickup head and guiding the optical pickup head to move linearly back and forth with respect to the spindle motor; and a bearing structure, mounted on the base to receive one respective bar end of two bar ends of the guide bar; wherein the disk drive structure is characterized in that: the bearing structure is an adjustable bearing structure, the adjustable bearing structure further comprising: a housing, forming an accommodation space with the base therebeneath for receiving the respective bar end, further including a position stud extruding downward; a through hole of the base, located aside to the bar end received by the accommodation space; a spring arm, mounted on the base, located aside to the bar end but opposing to the through hole, further including a free end pressing upon the bar end; and a cam pillar, rotationally mounted in the through hole, further including thereof: a position surface, close to the housing, further including a pivotal point as a rotation center of the cam pillar with respect to the housing; an adjusting surface, opposing to the position surface; a pillar surface, connecting the position surface and the adjusting surface, further including a cam surface to contact with the bar end; a plurality of position holes for receiving the position stud, located at the position surface by circling around the rotation center; and an adjusting port, located at the adjusting surface; wherein, by using an adjusting means to pair with the adjusting port and thereby to rotate the cam pillar around the rotation center, the cam pillar is rotated to have the position stub engage with a particular one of the position holes so as to form a stop between the housing and the cam pillar.