Patent ID: 8450897

Claim:
A rotor for motor comprising: a rotation shaft; a permanent magnet which is structured in a tube-like shape and fixed to an outer peripheral side of the rotation shaft; and a sleeve which is structured in a tube-like shape, disposed between an outer peripheral face of the rotation shaft and an inner peripheral face of the permanent magnet, and press-fitted and fixed to the outer peripheral face of the rotation shaft; wherein a dimension in the axial direction of the sleeve is shorter than a dimension in the axial direction of the permanent magnet, so that a first ring-shaped recessed part is formed between the rotation shaft and the permanent magnet; wherein the rotation shaft and the permanent magnet are fixed to each other with a first adhesive in the first ring-shaped recessed part; wherein the first adhesive fixes the rotation shaft, the sleeve and the permanent magnet to each other in the first ring-shape recessed part; wherein the first ring-shaped recessed part is structured so that a part of an inner peripheral face of a center hole of the permanent magnet is exposed; wherein the first adhesive adhesively fixes the outer peripheral face of the rotation shaft, an end face on the one side in the axial direction of the sleeve, and an exposed inner peripheral face of the center hole of the permanent magnet to each other; wherein an outer peripheral face of the sleeve is formed with an outer peripheral side stepped part which is recessed from the end face on the one side in the axial direction of the sleeve; an outer peripheral side recessed part is formed by the outer peripheral side stepped part and the inner peripheral face of the center hole of the permanent magnet so as to be in communication with the first ring-shaped recessed part; and the first adhesive is inserted into the outer peripheral side recessed part.