Patent ID: 7151674

Claim:
A mold-type electronic control unit comprising a unit body having a plurality of components on a printed circuit board and a molded portion which is injection molded so as to cover said unit body, said plurality of components including a specific component having an exposure required portion required to be exposed to outside when being used, said unit comprising: a component case having an opening opened toward said printed circuit board at one axial end of the case, having a hole for opening an internal space of the component case to outside at the other axial end of the case, having a packing receiving surface extending so as to surround a central axis of the case outside thereof, with said packing receiving surface directed to the other axial end of the component case and one axial end of the component case being fixed to said printed circuit board; a first packing which is press-fitted into said component case from said opening to prevent resin for molding from flowing into the internal space of the component case when said molded portion is injection molded; and a second packing secured to said packing receiving surface so as to contact with an inner surface of a mold for injection molding to prevent resin for molding from flowing toward the hole of the component case when said molded portion is injection molded, wherein said first packing comprises a recess portion formed so as to receive said specific component and a window portion one end of which is opened to said recess portion and the other end of which is opened to said component case, and is arranged so that said recess portion is opened to said printed circuit board, wherein said specific component is housed in said recess portion of the first packing, and wherein said exposure required portion of said specific component is exposed to the internal space of said component case through said window portion.