Title: Brushless motor
Application Number: 200610146762 Application Date: 2006.11.22
Publication Number: 1972081 Publication Date: 2007.05.30
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H02K5/173;H02K7/08;H02K7/116;H02K29/00;H02K29/08;H02K21/00;H02K21/22
Applicant(s) Name: Nidec Corp. Address:
Inventor(s) Name: Shimoyama Tatsuya;Mano Masaaki
Attorney & Agent: chenjian
Abstract:
    The present invention provides a brushless motor, the shaft of the brushless motor includes a protruding portion, and a ball bearing abutting against the protruding portion for axially positioning the ball bearing. The protruding portion is formed by rolling, and a plurality of protruding portions are arranged on the shaft in a circumferentially equally spaced manner. By forming the protruding portions by rolling, durability of the shaft against a force in a radial direction is enhanced, and therefore, it is possible to provide a reliable brushless motor.
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