Patent ID: 8084906
Filing Date: 2011-12-27
Classification: G11B,H02K,Y10T

Abstract:
1. A brushless motor, comprising: a stator serving as a non-rotating portion fixed to a base member; and a rotor serving as a rotating portion integrally rotating with a rotating shaft, the stator comprising: a bearing for rotatably holding the rotating shaft from an outer periphery; a bearing housing which includes a cylindrical section having the bearing mounted therein and a base placed on the base member and has the bearing placed vertically relative to the base member; a thrust plate which comes into contact with an end of the rotating shaft in a thrust direction and rotatably receives the end of the rotating shaft; a metal thrust cover for holding the thrust plate; and a metal installation member including an annular section which is superposed over the base of the bearing housing and projecting pin sections which pass through, from the annular section, insertion holes formed on the base member and project from points near an outer periphery of the thrust cover, wherein the projecting pin sections of the installation member have projection sections welded to the thrust cover, the projection sections projecting from the thrust cover; the thrust cover has a recessed section, which is recessed toward the center of the thrust cover in plan view; and the projection sections are welded to the recessed section.