SPINDLE MOTOR AND DISK DRIVE APPARATUS

摘要

A base portion of a spindle motor includes a base portion through hole passing therethrough from an upper surface to a lower surface thereof. Coils include a lead wire drawn out from above the upper surface downwardly from the lower surface through the base portion through hole. A circuit board includes a land portion to which the lead wire is connected. The spindle motor includes an insulation sheet portion configured to cover at least a portion of the base portion through hole and with which the lead wire is arranged to be in contact. A thickness of the insulation sheet portion is greater than a thickness of the land portion.

主权项

1. A spindle motor comprising:
a rotor portion including a rotor magnet; a bearing portion configured to support the rotor portion such that the rotor portion is rotatable about a central axis extending in a vertical direction; a stator portion including coils located opposite to the rotor magnet; a base portion including an upper surface, a lower surface, and a base portion through hole passing therethrough from the upper surface to the lower surface; a circuit board located on the lower surface of the base portion; and an insulation sheet portion; wherein the coils include a lead wire drawn out from above the upper surface downwardly from the lower surface through the base portion through hole; the circuit board includes a land portion to which the lead wire is connected; the insulation sheet portion covers at least a portion of the base portion through hole; the lead wire contacts the insulation sheet portion; and the insulation sheet portion has a thickness greater than a thickness of the land portion.