Spindle motor and disk drive apparatus

  • US 9,935,528 B2
  • Filed: 05/21/2015
  • Issued: 04/03/2018
  • Est. Priority Date: 12/04/2014
  • Status: Active Grant
First Claim
Patent Images

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;

    whereinthe 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.

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