Nidec Corporation

Tatsuya Ito

Hideaki Uchise

Takayuki Migita

Masato Aono

Hiroshi Kitagaki

Akihiro Okita

A rotor includes a rotor core, a plurality of magnets positioned radially outside the rotor core, a rotor cover having a tubular portion surrounding the rotor core and the magnet, and a resin portion coupling the rotor core and the magnet with each other. The resin portion has a first lid portion positioned on one axial side of the rotor core and the magnet. The rotor cover has a flange portion projecting radially inward from the tubular portion on one axial side of the first lid portion. The first lid portion has a recess portion depressed from a surface on one axial side of the first lid portion. The recess portion is positioned at a position overlapping between the circumferentially adjacent magnets. The flange portion has a first swage portion swaged to the other axial side and positioned inside the recess portion.

Rotor and motor

A stator includes a stator core, an insulator attached to the stator core, and coil wires. The insulator includes base portions respectively surrounding outer peripheral surfaces of teeth and an outer wall portion located immediately above the core back and extending in a circumferential direction. Each of the coil wires includes coils into which each of the coil wires is wound around more than one of the teeth by concentrated winding, a connecting wire connecting the coils, and a pair of lead wires located at two ends of each of the coil wires and extending from the coils. The connecting wire of each of the coil wires includes at least one outside-passing portion extending along an outer surface of the outer wall portion on a radially outer side of the outer wall portion.

Growing community of inventors

Kyoto, Japan

Tatsuya Ito