Patent ID: 7755907

Claim:
An electronic control device having an electronic circuit substrate, the device comprising: a casing main body accommodating said electronic circuit substrate; a lid member closing an opening of said casing main body; a sealing material provided between said casing main body and said lid member and sealing a joint portion between said casing main body and said lid member in a liquid tight manner; defining means provided in one of said casing main body and said lid member, and brought into contact with the other of said casing main body and said lid member, thereby defining an interval between said casing main body and said lid member; and pressing means pressing said casing main body and said lid member to each other at a contact position where the defining means contacts the casing main body and at a contact position where the defining means contacts said lid member, wherein said casing main body is formed in a tubular shape, said lid member includes an upper lid and a bottom lid closing openings of said casing main body, a flange portion is provided in an outer side surface of said casing main body and protrudes laterally, wherein said upper lid and said bottom lid are fixed to said casing main body by said pressing means in such a manner as to hold said flange portion, and wherein said defining means is provided in portions of said flange portion that face said upper lid and said bottom lid.