Hitachi Astemo Ltd.

Eiji Ichikawa

Kumiko Yoshinaga

Hirofumi Watanabe

Mototaka Takahashi

Tetsurou Tateyama

Yuki Nakamura

Hideyuki Sakamoto

Masashi Saito

Masahiro Toyama

Isao Hoda

Michihito Watarai

Hidetatsu Yamamoto

Minami Teranishi

Tomokazu Tanase

Masao Horie

Daisuke Tanaka

Ryujo Sugahara

Toshiyuki Fujimasa

Hiroi Nambu

An electronic control device includes a circuit board having a plurality of connectors for connection to an external apparatus, and a housing made of a conductive material and adapted to accommodate the circuit board therein. The housing has an opening corresponding to the connectors, and at least one of a first housing component and a second housing component which constitute the housing has a comb-blade-shaped portion for partitioning the opening for each of the connectors.

Electronic control device

An electronic control device includes a housing including a first region in which heat dissipation fins are formed on one side and an electronic component generating the largest amount of heat is in thermal contact with the other side, and a second region in which an electronic component is in thermal contact with the one side and the other side.

To provide an electronic control device capable of securing electromagnetic compatibility and mechanical strength. An electronic control device includes a base portion formed in a bottomed cylindrical shape; an electronic control board provided in the base portion; and connectors provided on an opening side of the base portion and electrically connected to the electronic control board, in which the base portion includes a first layer formed of a conductive member and a second layer formed of a member different from that of the first layer.

Electronic control device with electromagnetic compatibility for vehicle control

A wiring board () has first and second rigid sections () each having six metal leaf layers, and a flexible section () having two metal leaf layers that connect the both rigid sections (). A capacitor unit () and a filter unit, which supplies power to an inverter, are mounted on the first rigid section (), and a CPU () and a pre-driver circuit element () are mounted on the second rigid section (). Mutually-independent two control systems are arranged so as to be symmetrical about a board center line (M). Detection signal lines () of rotation sensors () located at the middle of the first rigid section () extend along the board center line (M) on the flexible section (). Each of the two control systems is configured along a wiring direction of the detection signal lines ().

A circuit board () is provided with a first rigid part () having a power system electronic component mounted thereon, a second rigid part () having a control system electronic component mounted thereon, and a thin flexible part () connecting the first and second rigid parts to each other. The flexible part () is provided with a plurality of conductive wires () conducted with the electronic components of the first and second rigid parts (). A non-conductive metal pattern () that is a dummy pattern is formed along an outer edge () of the flexible part (). By the non-conductive metal pattern (), the disconnection of the conductive wires () due to cracking is suppressed.

Electronic circuit board and electronic circuit device

Growing community of inventors

Hitachinaka, Japan

Eiji Ichikawa