| 摘要 |
A rotor for a rotating electric machine includes a rotor core, a plurality of permanent magnets, and a rotating shaft. The rotor core includes a through-hole, an inner circumference-side rotor core, an outer circumference-side rotor core, and a plurality of ribs. Each of the plurality of ribs includes a first curved rib and a second curved rib. The first curved rib extends to one side in a circumferential direction from an inner circumference side toward an outer circumference side. The first curved rib has a curved shape that bulges toward the outer circumference side and toward another side in the circumferential direction beyond a straight line that connects a first connecting portion between the first curved rib and the inner circumference-side rotor core and a second connecting portion between the first curved rib and the outer circumference-side rotor core. |
| 主权项 |
1. A rotor for a rotating electric machine, comprising:
a rotor core having a substantially annular shape and a rotation axis around which the rotor core is to be rotated, the rotor core including a shaft hole extending along the rotation axis and a plurality of magnet insertion holes provided at predetermined intervals in a circumferential direction of the rotor core; a plurality of permanent magnets provided in the plurality of magnet insertion holes, respectively; a rotating shaft press-fitted into the shaft hole provided in the rotor core; and the rotor core comprising:
a through-hole provided on a first inner circumference side of the magnet insertion holes, the through-hole having a substantially annular shape and penetrating the rotor core along the rotation axis;an inner circumference-side rotor core located on a second inner circumference side of the through-hole;an outer circumference-side rotor core located on an outer circumference side of the through-hole; anda plurality of ribs extending through the through-hole and connecting the inner circumference-side rotor core and the outer circumference-side rotor core, the plurality of ribs being arranged at predetermined intervals in the circumferential direction, each of the plurality of ribs comprising:
a first curved rib extending to one side in the circumferential direction from an inner circumference side toward an outer circumference side, the first curved rib having a curved shape that bulges toward the outer circumference side and toward another side in the circumferential direction beyond a straight line that connects a first connecting portion between the first curved rib and the inner circumference-side rotor core and a second connecting portion between the first curved rib and the outer circumference-side rotor core; anda second curved rib extending to the another side in the circumferential direction from the inner circumference side toward the outer circumference side, the second curved rib having a curved shape that bulges toward the outer circumference side and toward the one side in the circumferential direction beyond a straight line that connects a third connecting portion between the second curved rib and the inner circumference-side rotor core and a fourth connecting portion between the second curved rib and the outer circumference-side rotor core, wherein the first curved rib and the second curved rib cross each other at a position inside the through-hole, and are connected to each other at the position to form a fifth connecting portion. |
