Patent ID: 6590854
Filing Date: 2003-07-08
Classification: G11B

Abstract:
A read-write head fine adjustment and driving structure comprising:a disk rotation unit, said disk rotation unit comprising a motor drive adapted to rotate a disk; a reciprocation unit disposed at one side of said disk rotation unit, said reciprocation unit comprising a sliding track, a slide holding a read-write head and supported on said sliding track, a motor having a body and an output shaft and adapted to reciprocate said slide along said sliding track relative to said disk rotation unit, and a transmission gear set coupled between the output shaft of the motor of said reciprocation unit and said slide, said transmission gear set comprising a rack fixedly fastened to one side of said slide and disposed in parallel to said sliding track, a driving gear fixedly mounted on the output shaft of the motor of said reciprocation unit, and at least one driven gear coupled between said driving gear and said rack; a fine adjustment unit adapted to adjust the tilting angle of said sliding track of said reciprocation unit; and an elevation difference compensation unit, said elevation difference compensation unit comprising a motor mount holding the motor of said reciprocation unit, spring means, and an elevation differential device fixedly fastened to the body of the motor of said reciprocation unit and adapted to rotate the body of the motor of said reciprocation unit, said elevation differential device having one side pivoted to one driven gear of said transmission gear set of said reciprocation unit and an opposite side supported on the spring means of said elevation difference compensation unit.