MOTOR

摘要

A motor may include a rotor including a shaft; a stator; and a bearing supporting the shaft. The rotor may include a plurality of core pieces on an outer side of the shaft, a plurality of permanent magnets, and a mold resin part between the core pieces. The neighboring core pieces may include a magnet insertion hole provided therebetween. The permanent magnet may include two poles, with poles of neighboring magnets facing each other having identical polarity. The mold resin part may include at least one first guide part disposed closer to one side than the center between neighboring core pieces, and covers at least a portion of a surface on one side of the magnet insertion hole in a circumferential direction, the permanent magnet being in direct indirect contact via resin with the core piece disposed on the other side of the magnet insertion hole.

主权项

1. A motor, comprising:
a rotor comprising a shaft having its center on a vertically extended center axis; a stator which is disposed at a radially outer side of the rotor; and a bearing which supports the shaft, wherein the rotor comprises a plurality of core pieces arranged on a radially outer side of the shaft along a circumferential direction, a plurality of permanent magnets to magnetize the core piece part, and a mold resin part made of resin and disposed between the plurality of core pieces, the neighboring core pieces comprises a magnet insertion hole provided therebetween in a circumferential direction, extended in an axial direction for insertion of the permanent magnet, the permanent magnet comprises two magnetic poles arranged along a circumferential direction, the magnetic poles of the circumferentially neighboring permanent magnets facing each other having identical polarity, the mold resin part comprises at least one first guide part provided within the magnet insertion hole, the first guide part disposed closer to one side in a circumferential direction than the center in between the neighboring core pieces, and covers at least a portion of a surface on one side of the magnet insertion hole in a circumferential direction, the permanent magnet being in direct contact or in indirect contact via resin with the core piece disposed on the other side of the magnet insertion hole in the circumferential direction, wherein a relationship of L1−L2