Patent ID: 7944103
Filing Date: 2011-05-17
Classification: F16C,H02K

Abstract:
1. A motor comprising: a shaft arranged concentrically about a central axis; a housing including a cylindrical portion in which an inner peripheral surface and an outer peripheral surface thereof extend concentrically with the central axis, and a flange portion which is defined integrally with the cylindrical portion and provided with an upper surface and a lower surface each of which extend radially outwards; an attachment plate including a fixation portion which includes a flat shape and which is provided with a lower surface fixed only to the upper surface of the flange portion, and a plurality of mounting portions which are defined integrally with the fixation portion and which are arranged to fix another member thereto; and a bearing portion retained at the inner peripheral surface of the cylindrical portion so as to rotatably support the shaft; wherein a plurality of fitting portions are arranged in a circumferential direction at an axially lower side of the flange portion and each of the plurality of fitting portions extend continuously from the cylindrical portion; the flange portion includes a plurality of openings which are arranged in the circumferential direction evenly apart from one another corresponding to the fitting portions, and which respectively penetrate from the upper surface to the lower surface each of the plurality of openings extending outwardly in a radial direction from an inner peripheral edge of the flange portion, a maximum circumferential width of each of the plurality of openings is equal to or greater than a maximum circumferential width of the corresponding fitting portions, and a maximum radial width of each of the plurality of openings is equal to or greater than a distance between a lower end surface of the fitting portion and the lower surface of the flange portion.