Patent ID: 7109623

Claim:
A motor comprising: a base portion; a bearing portion, which is provided on the base portion; a stator, which is disposed around the bearing portion; a rotary shaft, which is journaled in the bearing portion; and a magnet, which is disposed in opposition to an outer peripheral part of the stator, and which rotates integrally with the rotary shaft, wherein: a magnetic force of the magnet on one end side thereof is weaker than a magnetic force of the magnet on the other end side thereof, in an axial direction of the rotary shaft, the one end side of the magnet in the axial direction of the rotary shaft includes a thin-walled portion whose effective thickness is made smaller than an effective thickness of the magnet on the other end side thereof, and the effective thickness of the thin-walled portion of the magnet on the one end side thereof is made 50%–90% of the effective thickness of the magnet on the other end side thereof.