| 主权项 |
1. A drive device comprising:
a board including an opening; and a motor including:
a rotational shaft;a housing supporting the rotational shaft for rotation, fixed to the board so as to surround the opening, and having a cylindrical shape;a bearing supporting the rotational shaft for rotation and press-fitted onto an inner peripheral surface of the housing; anda thrust cover supporting an end of the rotational shaft and fixed onto the inner peripheral surface of the housing by an adhesive, wherein an inner edge of the opening includes:
a first recessed portion recessed radially outwardly from the opening; anda first projection portion projecting radially inwardly from the opening, an outer edge of the thrust cover includes:
a second recessed portion recessed radially inwardly from the thrust cover; anda second projection portion projecting radially outwardly from the thrust cover, at least the first and second projection portions partially overlap each other when viewed in an axial direction of the rotational shaft, a first gap is defined between the second recessed portion and the inner peripheral surface of the housing in a radial direction of the rotational shaft, a second gap is defined between the first and second projection portions in the axial direction of the rotational shaft, and the adhesive is filled in the first and second gaps. |
