The base improves manufacturing efficiency and yield and has an advantage in cost. The base includes a panel having a through-hole, a motor holder, having a cylindrical shape that protrudes from a first face of the panel in a thickness direction of the panel, integrally formed on the panel corresponding to the through-hole, the motor holder holds a motor fitted to an inner circumferential surface of the motor holder through adhesives, and the motor holder is provided with at least one depression pressure-formed on the inner circumferential surface thereof, thereby eliminating cutting processing, facilitating accuracy control, suppressing nonconformity such as corrosion because no base material is exposed, requiring no measures against burs and the like, improving production capacity and yield, and resulting in cost advantages, too.