Patent ID: 8421319
Filing Date: 2013-04-16
Classification: F16C,H02K

Abstract:
1. A bearing holder mounting structure configured to mount a bearing holder in a motor housing, comprising: the motor housing having a mounting hole formed therein, in which the bearing holder is fitted to be mounted in the motor housing, the motor housing including an annular fitting recessed portion formed at an outer end of the mounting hole, the bearing holder including: a retaining fitting for retaining the bearing holder, disposed outwardly on the flange portion and abutting on the flange portion so that the bearing holder does not come off from the mounting hole of the motor housing, the retaining fitting being fitted in the annular fitting recessed portion of the motor housing and having a larger hardness than a portion of the motor housing where the mounting hole is formed, the retaining fitting including: wherein the material of the retaining fitting and shapes of the engaging pieces and the annular fitting recessed portion are determined such that, when the retaining fitting is pressed into the fitting recessed portion, the engaging pieces warp in an opposite direction to a pressing direction of the retaining fitting and leading ends of the engaging pieces bite in the wall portion due to resilient force by which the engaging pieces return to an original state from a warped state.