Mitsuba Corporation

Tadamasa Endo

Hiroyuki Uchimura

Hiroki Saito

Masayuki Kamei

Shun Ogayu

A motor device includes an electric motor, a control board on which a control circuit controlling the electric motor is mounted, a metal housing supporting a first surface of the control board, a resin cover attached to the housing to cover a second surface of the control board opposite to the first surface and the periphery of the control board, and a heat dissipation member dissipating heat generated by a heating element included in the control circuit to the housing. The heat dissipation member includes a heat reception plate fixed to the cover, and a heat transfer plate protruding toward the housing. The housing includes, outside the motor accommodation space, a reception portion receiving a protrusion end of the heat transfer plate inserted in a direction in which a rotation shaft extends, and a heat exhaust wall extending in the and coming into surface contact with the heat transfer plate.

Growing community of inventors

Gunma, Japan

Tadamasa Endo