Mitsuba Corporation

Koji Yonekawa

Ryo Ohori

Takeshi Kanai

Yukari Otsuka

A rotor is provided with: a rotor core (); a plurality of permanent magnets (); a substantially tubular magnet cover (); and a load reception block (). The rotor core () rotates integrally with a rotary shaft of a motor. The permanent magnets () are arranged on the outer peripheral part of the rotor core (). The magnet cover () covers the exterior of the plurality of permanent magnets () and the rotor core (), and has a flange part which is bent radially inward at the end along a rotation axis. The load reception block () is disposed between the flange part and the end surface of the rotor core () in a direction along the rotation axis, and abuts against the flange part and the rotor core ().

Rotor, motor, and method for manufacturing rotor

An insulator attached to a core body in an annular shape and multiple teeth protruding from the core body along a radial direction for insulating the teeth and a coil wound around the teeth includes: a tooth end surface covering part covering an axial end surface of the tooth. The tooth end surface covering part includes: an inclined part provided on a front surface of the tooth end surface covering part on a side opposite to the tooth and inclined such that its height from the axial end surface of the tooth gradually changes along the radial direction; and an inclined part parallel part and a tooth parallel part provided on a back surface of the tooth end surface covering part on the tooth side and concave in a direction away from the axial end surface of the tooth.

Growing community of inventors

Gunma, Japan

Koji Yonekawa