BASE UNIT FOR RECORDING DISK DRIVE DEVICE, SPINDLE MOTOR PROVIDED WITH BASE UNIT AND HARD DISK DRIVE DEVICE PROVIDED WITH SPINDLE MOTOR

摘要

PROBLEM TO BE SOLVED: To provide a base unit for recording disk drive device which enhances airtightness and prevents gas leakage.;SOLUTION: The base unit for recording disk drive device includes: a base section 34 which has a plurality of through holes 35 and expands in the radial direction around the central axis; a stator core which is arranged in the upper side of the base section, and has an annular core back and a plurality of teeth projecting from the core back to the outside of the radial direction; an U-phase coil including an U-phase, a V-phase coil including a V-phase and a W-phase coil including a W-phase which are wound around the teeth; an U-phase common line 44 (U), a V-phase common line 44 (V) and a W-phase common line 44 (W) which are extracted from the coils of each phase; and a circuit board 60 positioned on the lower surface of the base section. In the base unit, the common lines of each phase pass through each one of each through hole, are extracted to the lower side of the base section and are electrically connected to the circuit board, and the through holes are sealed by a sealing material 55.;COPYRIGHT: (C)2012,JPO&INPIT