Rotor für Elektrische Drehmaschine

Details

Veröffentlichungs-Nr.

EP4718685

Anmeldetag

22. September 2025

Veröffentlichung

1. April 2026

Rechtsraum

EP

IPC

H02K1/276(NACHTMANN FLORIAN et al.)

Abstract

A rotor (30) for a rotary electric machine includes: a rotor core (32) having an annular shape when viewed in an axial direction; a rotor shaft (34) disposed on a radially inner side of the rotor core and coupled to the rotor core by an interference in a radial direction; and a magnet (61) disposed in the rotor core for each magnetic pole in a form in which a plurality of magnetic poles are formed along a circumferential direction. The rotor core has a plurality of holes in the axial direction that are radially inward than the magnet. The plurality of holes in the axial direction include a plurality of first holes (71) regularly arranged in the circumferential direction at first radial positions and a plurality of second holes (72) regularly arranged in the circumferential direction at second radial positions that are radially inward than the first radial positions. The first hole has a protruding shape of which an outline (L710) on the radially inner side protrudes to the radially inner side when viewed in the axial direction, and has a shape of which a center line (d-axis), parallel to the radial direction and passing through a center in the circumferential direction of the first hole, passes between a portion in the circumferential direction of the adjacent second holes. The outline on the radially inner side includes two straight lines (L710), and a curve (C712) that passes through a radially outer side of an intersection point where extension lines of the two straight lines intersect and that connects the two straight lines.

Anmelder

Firma

AISIN CORPORATION

Land

🇯🇵 Japan

Fachgebiete