To provide a motor that more effectively suppresses looseness of a bearing inside a through hole of a bearing holder.
In a motor 1, a bearing 7 is arranged inside a through hole 80 of a bearing holder 8 so as to be movable in a direction of a motor axis L. A flat spring portion 90 urges the bearing 7, as arranged in the through hole 80 of the bearing holder 8, toward a rotating shaft 51 and thus applies pressure to the bearing 7. On an outer circumferential surface 72 (a first circumferential surface) of the bearing 7, fine protrusions 79 are provided that project toward an inner circumferential surface 80a (a second circumferential surface) of the through hole 80, the protrusions 79 being linear protrusions. When the bearing 7 is arranged inside the through hole 80 of the bearing holder 8, thus, the protrusions 79 become crushed between the outer circumferential surface 72 of the bearing 7 and the inner circumferential surface 80a of the through hole 80. Gaps between the outer circumferential surface 72 of the bearing 7 and the inner circumferential surface 80a of the through hole 80 become narrowed where the protrusions 79 are crushed.
Shin Kodaira
Toru Kawai
Kawaguchi Nobuko