Mitsubishi Electric Corporation

Honda Motor Co., Ltd.

Naoki Honishi

Masahiro Shimada

Ryoji Tomokage

Takashi Omura

Seiichi Goto

Naoya Hashii

Kohei Ando

Yasuhiro Ozuchi

A circuit unit of a drive unit includes a plate-shaped heat sink that extends in a direction perpendicular to an axis of rotation of a motor, and a lower case arranged on a lower side of the heat sink. In the drive unit, a fastening member, which is formed on the lower case, is fastened to a housing, and a height of a fastening surface, which is located on an upper end of the fastening member, is positioned within a height range that spans from a lower surface to an upper surface of the heat sink.

Drive unit

In a drive circuit unit, a seal member includes a first contact part that makes contact with respect to an inner surface of a case wall section which defines a through hole. In a state in which the seal member is arranged inside the through hole, a first distance in an insertion direction of the seal member from an outside end portion of the inner surface to the first contact part is longer than a second distance in the insertion direction between an outside surface of the seal member and a cover.

Drive circuit unit

It is structured that plural service holes are provided on a surface of the casing, that a flange of a rubber plug for sealing the service hole has a lip seal that abuts against the casing of the power conversion equipment, that the rubber plug has a recessed section, that the surface of the casing is provided with a rib on an outer circumference side of the flange of the rubber plug, that an end surface of the rib is orthogonal to an axis of the service hole, and that a relationship of hhis established when a distance from an abutment surface of the lip seal to an end surface of the rubber plug on a side with the recessed section is set as hand a distance from the abutment surface of the lip seal to the end surface of the rib is set as h

Casing and rubber plug of power conversion equipment

Growing community of inventors

Tokyo, Japan

Naoki Honishi