| 摘要 |
<p>A motor includes a housing and a back cover. Further the motor includes a brush card disposed in a casing constituted by the housing and the back cover and a brush disposed forward of the brush card. The back cover includes a through hole in the vicinity of a lower end portion of a first circumferential wall portion. Further the back cover and the brush card are in contact with each other in a substantially annular shape in a radially inner side of an inner circumferential surface of the first circumferential wall portion via a gap. Further the contact portion is disconnected or the brush card is radially penetrated at a position that radially overlaps with the through hole. Accordingly both of a droplet which infiltrates between the first circumferential wall portion and the contact portion and a droplet which infiltrates radially inside the contact portion flow along an inner surface of the back cover and are discharged outside the back cover through the through hole. Accordingly it is possible to efficiently discharge the droplets from the inside of the back cover. As a result it is possible to suppress the droplets from adhering to the brush.</p> |
