| 摘要 |
PROBLEM TO BE SOLVED: To suppress a risk that a rotor is vibrated by lubricant entering the rotor when rotating the rotor.SOLUTION: An embedded permanent magnet type rotor comprises: a rotor main body part in which a permanent magnet is embedded by fixing a rotor laminate plate formed of a plurality of magnetic materials with fixing plates 47 and 47' provided on both end parts in a shaft direction; and a rotary center shaft that can penetrate through the rotor main body part and rotate integrally with the rotor main body part. In the fixing plates 47 and 47', a hole 47a that is inserted through the rotary center shaft is formed. The rotor is further provided with: a rotor cover that has an insertion hole part which is inserted into the rotary center shaft extending from the fixing plates 47 and 47' and inserted through the rotary center shaft, and a cover side surface part that covers the hole 47a of the fixing plates 47 and 47' and contacts the outer faces of the fixing plates; and a rotor fixing part that has a female screw part that is screwed and fitted to the rotary center shaft extending from the rotor cover and screwed to the rotary center shaft, and a fixed side surface part that contacts the outer face of the rotor cover positioned outward in a radial direction from the insertion hole part of the rotor cover.SELECTED DRAWING: Figure 7 |
