| 摘要 |
PROBLEM TO BE SOLVED: To make it possible to sufficiently secure a tightening margin between a rotor core and a sleeve even when the rotor core and the sleeve are deformed by a centrifugal force generated when a motor is driven at high speed by devising an arrangement of a keyway formed at an inner circumferential surface of the sleeve.SOLUTION: At a rotor core (21), six-pole magnetic pole configuration sections (25) are provided. A keyway (30a) of a sleeve (30) is arranged on a center line connecting a point between adjoining magnetic pole configuration sections (25) and a rotation center (O) of the rotor core (21). |
