ROTOR AND BRUSHLESS MOTOR

摘要

A rotor includes: a rotor core; a plurality of magnets; and an adhesive that adhesively bonds the magnet to the rotor core. The magnets are housed in the magnet holders such that the same magnetic poles of adjacent magnets face each other in a circumferential direction of the rotor core. The adhesive includes: a first adhesive part that adhesively bonds two interior surfaces of the magnet holder facing the circumferential direction to the magnet and that reaches one of ends of the magnet in a direction of axis of the magnet; and a second adhesive part that adhesively bonds, on a side of one of end surfaces of the rotor core in a direction of axis of the rotor core, said end surface of the rotor core to an end surface of the magnet in an axial direction of the magnet and that is connected to the first adhesive part.

主权项

1. A rotor comprising:
a rotor core; a plurality of magnets; and an adhesive that adhesively bonds the magnet to the rotor core, wherein the rotor core includes: an annular part around a hole in which a rotating shaft is inserted; a plurality of magnetic pole pieces radially formed around the annular part; and a plurality of magnet holders radially formed between adjacent magnetic pole pieces, wherein the magnets are housed in the magnet holders such that the same magnetic poles of adjacent magnets face each other in a circumferential direction of the rotor core, wherein the adhesive includes: a first adhesive part that adhesively bonds two interior surfaces of the magnet holder facing the circumferential direction to the magnet and that reaches one of ends of the magnet in a direction of axis of the magnet; and a second adhesive part that adhesively bonds, on a side of one of end surfaces of the rotor core in a direction of axis of the rotor core, said end surface of the rotor core to an end surface of the magnet in an axial direction of the magnet and that is connected to the first adhesive part.