| 摘要 |
PURPOSE:To miniaturize a housing by providing a groove in the peripheral surface of the lower part of the housing of the sleeve of a dynamic pressure fluid bearing and fitting an elastic member in the groove and fixing an optical box after arranging the housing in an optical axis. CONSTITUTION:On the top face of the flange part 32a of a housing 32 with a sleeve 31 which is a fixing member, a motor substrate 33 is adhered and fixed, and the lower face of the flange part 32a is taken as a datum surface to be mounted on an optical box 34. A groove 35 is provided in the peripheral surface of the sleeve 31, and an elastic member 36 such as a leaf spring or the like is fitted in this groove from the outside of the optical box 34 to fix the housing and optical box 34. Since the flange part 32a turns into the datum surface to be mounted on the optical box 34 for this reason, the outer diameter of the housing 32 can be made small, and the sleeve 31 and the housing 32 can be easily integrated into a body as a fixing member. |
