To provide a motor which prevents a bearing holder, which slidably holds a bearing supporting the anti-output side end part of a rotation shaft, from being fastened to a permanent magnet fixed to the rotation shaft.
A motor includes: a rotation shaft 2 where a feed screw is fixed or formed at the output side; a permanent magnet 3 fixed to an outer peripheral surface at the anti-output side of the rotation shaft 2; a stator having a driving coil 17 disposed at the outer peripheral side of the permanent magnet 3; a bearing 9 supporting an anti-output side end part of the rotation shaft 2 in at least an axial direction of the rotation shaft 2; a bearing holder 21 fixed to the anti-output side of the stator and slidably holding the bearing 9 in the axial direction; and a biasing member 22 biasing the bearing 9 to the output side. A protruding part 9d protruding outward with respect to a radial direction of the rotation shaft 2 is formed at the bearing 9, and the protruding part 9d is disposed between an anti-output side end surface 3a of the permanent magnet 3 and an output side end surface 21a of the bearing holder 21.
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Shiro Yokozawa
Toru Kawai
Kawaguchi Nobuko