Abstract: In order to provide an electronic control device that can flexibly cope with in-vehicle layout and assembly for each vehicle at low cost and can contribute to a reduction in the total cost of the vehicle, the following configuration is adopted.

Abstract: An electronic control device includes a circuit board on which a connector is mounted, a base that covers a first board surface, and a cover that covers a second board surface. The base includes a board fixing pedestal part, a cover fixing pedestal part, and a partition wall formed to be positioned at a boundary part between a connector mounting region and a circuit function region of the circuit board. A clearance between the partition wall and the first board surface in a thickness direction of the circuit board is 1.0 mm or less.

Abstract: An electronic device includes a resin case body having a rectangular opening into which a circuit board is inserted, and a cover that closes the opening of the case body. The case body includes a peripheral wall portion having a rectangular cross section and forming an opening by a pair of first side wall portions facing both surfaces of the circuit board and a pair of second side wall portions connected to the pair of first side wall portions. The peripheral wall portion has a pair of first fitting portions provided in a region of the first side wall portion of the annular end surface on the opening side, and the cover has a pair of second fitting portions fitted to the pair of first fitting portions of the case body by press-fitting. The connection portion between the first side wall portion and the second side wall portion in the peripheral wall portion has a concave portion on the inner wall surface side so as to be thinner than the first side wall portion and the second side wall portion.

Abstract: An automotive air bag device offers ready installation in an automobile instrument panel while reducing material and assembly costs and maintaining its structural integrity when activated. An air bag inflation opening, formed in the instrument panel, is surrounded by an internal reinforcement wall. An air bag lid, which covers the opening, includes an inwardly directed leg which engages the reinforcement wall. A case, which supports an inflator and a diffuser, is fastened to the leg on the lid.