Patent ID: 7085200

Claim:
A disk apparatus comprising: a pick-up for reading/writing signals from/on a disk; a pick-up base provided with said pick-up; a traverse motor for moving said pick-up in a radial direction of said disk; a feed screw rotated by said traverse motor and provided with a thread groove on its periphery; a rack having a fixing portion fixed to said pick-up base, a nut portion engaged with said thread groove, and a cantilever parallel spring for connecting said fixing portion to said nut portion; first guide shaft fit in a guide hole provided in said pick-up base and used for guiding said pick-up base slidably in a radial direction of said disk; second guide shaft fit in a guide groove provided on said pick-up base and used for limiting the rotation of said pick-up base around said first guide shaft; and a shaft holder fixed to said pick-up base at one end and pressed against said second guide shaft at a position where the other end is separated from said guide groove on one side in an axial direction of said second guide shaft and presses said pick-up base in a direction where the inside face of said guide groove is contact with said second guide shaft, wherein a direction in which said cantilever parallel spring is displaced and a direction in which said shaft holder is pressed against said second guide shaft are orthogonal to each other.