Mitsubishi Electric Corporation

Toru Kubo

Yasuhiro Takahashi

Hideki Umemoto

Takaaki Tanaka

Seiji Kato

Masako Tamura

Toshiaki Hata

Provided is an electronic controller which enables visual identification of a portion applied with a small amount of a sealing material, which has a high possibility of air leakage from an area in which a joint is to be established. The electronic controller includes: an electronic circuit board; and a casing including a cover (), a base (), and a lid sealed with a sealing material () applied to surfaces thereof at which the cover (), the base (), and the lid are to be joined together. An area in which the cover (), the base (), and the lid are to joined together is provided with a space () thereto for enabling an application state of the sealing material () to be observed with a naked eye.

Electronic controller

Provided is an electronic controller which enables visual identification of a portion applied with a small amount of a sealing material, which has a high possibility of air leakage from an area in which a joint is to be established. The electronic controller includes: an electronic circuit board; and a casing including a cover (), a base (), and a lid sealed with a sealing material () applied to surfaces thereof at which the cover (), the base (), and the lid are to be joined together. An area in which the cover (), the base (), and the lid are to be joined together is provided with a space () thereto for enabling an application state of the sealing material () to be observed with a naked eye.

An electronic control unit is configured in such a way that the groove-shaped concave portion of the second case member includes a first concave portion, in which a groove width at a bottom surface side is narrow, and a second concave portion, in which a groove width at an aperture surface side is wide, and the first concave portion and the second concave portion are linked by an inclined step portion in such a way that a groove width at the step portion is increased in a direction from the bottom surface side to the aperture surface side, and moreover, a tip of the rail-shaped convex portion of the first case member is fitted into the first concave portion at the bottom surface side of the second case member.

Electronic control unit

A starter driving semiconductor switch apparatus energizes and de-energizes a starter according to a command from an outside. A series circuit to which semiconductor switches are connected in series is provided between a battery serving as a power supply and the starter. The starter is energized by bringing all the semiconductor switches into conduction. A voltage or a current at a predetermined point in the series circuit is monitored to make a self-diagnosis on whether the starter is allowed to start and whether there is a failure in the semiconductor switches according to a monitor output. The starter driving semiconductor switch apparatus is thus expected to have a longer useful life by energizing the starter not by using mechanical contacts but by using semiconductor switches.

Starter driving semiconductor switch apparatus

Provided is an electronic controller, which allows the use of a general-purpose connector, and does not require setting of a case for housing an electronic circuit board therein for respective connectors each having a different shape so as to enable a reduction in cost. An electronic controller () includes: an electronic circuit board () onto which an electronic component () is mounted; a connector () provided at an end of the electronic circuit board (); a case () housing the electronic circuit board () therein and including an opening portion () on a side of the connector (); and a connector retaining member () provided between the connector () and an inner wall surface of the opening portion () so as to be held in close contact with the inner wall surface and to surround the connector ().

Growing community of inventors

Minato-ku, Japan

Toru Kubo