| 摘要 |
PROBLEM TO BE SOLVED: To reduce the operating sound furthermore, by preventing rotation of a bearing holder incident to the rotation of a rotating shaft reliably.SOLUTION: A motor case 21 is provided with a holder housing section 33 formed to have a cross section of regular hexagon shape in a direction crossing the axial direction of an armature shaft 13, and on the outer peripheral surface of a bearing holder 70, a rotation prevention part 74 having a cross section of regular hexagon shape in a direction crossing the axial direction of an armature shaft 13, and mounted relatively non-rotatably on the holder housing section 33 is provided. Consequently, the bearing holder 70 can be provided directly and relatively non-rotatably for the motor case 21, without passing through a resin portion as in the conventional. Rotation of the bearing holder 70 incident to rotation of the armature shaft 13 can thereby be prevented reliably, and the operating sound of the motor device 10 can be reduced furthermore.SELECTED DRAWING: Figure 3 |
