Electronic control device

An electronic control device comprising:

• a control unit which has a plurality of input/output control terminals provided on a circuit board with electronic components mounted thereon,
• wherein the control unit communicates a control signal with a host controller through an input/output control terminal and a control signal connector and controls an actuator to be control-target equipment through the input/output control terminals and an input/output connector,
• second wiring conductors in contact with the input/output control terminals to connect the input/output control terminals and the input/output connector, first wiring conductors in contact with the input/output control terminals to connect the input/output control terminals and the control signal connector, and the control unit are stored in a region surrounded by an annular peripheral wall member, a base covering one side of the annular peripheral wall member, and a cover covering the other side of the annular peripheral wall member,
• a first interior packing is interposed between the cover and the annular peripheral wall member, a second interior packing is interposed between the base and the annular peripheral wall member, a first pressing elastic mat which presses contact portions between the input/output control terminals and the first wiring conductors from the inner surface side of the cover and a second pressing elastic mat which presses contact portions between the input/output control terminals and the second wiring conductors from the inner surface side of the base are arranged, the cover, the base, and the annular peripheral wall member are fastened and fixed to one another by at least first fixing members, and the cover and the base are fastened to each other by the first fixing members, such that the cover, the first interior packing, the annular peripheral wall member, the second interior packing, and the base are fastened in a sealed state, and
• the input/output control terminals and the second wiring conductors are brought into elastic contact with each other by the second pressing elastic mat, the input/output control terminals and the first wiring conductors are brought into elastic contact with each other by the first pressing elastic mat,
• the first interior packing and the second interior packing are non-adhesive elastic packings, if the cover is opened, the input/output control terminals, the second wiring conductors, and the first wiring conductors are separated from one another to detach the control unit, and the relative positions of the input/output control terminals and the second wiring conductors, and the relative positions of the input/output control terminals and the first wiring conductors are regulated by positioning pins protruding from the cover or positioning pins protruding from the base.