ELECTRONIC CONTROL DEVICE

摘要

An electronic control device has a housing and an air breathing filter assembled to a through-hole of the housing. The air breathing filter has a filter supporting member and a filter cover member. A cylindrical portion of the filter supporting member is inserted into the through-hole from an inside space of the housing, while the filter cover member is fixed to the cylindrical portion of the filter supporting member from an outside of the housing. A pushing portion is formed in a leg portion of the filter cover member for pushing a wall of the housing in a downward direction. A water-proof sealing member is interposed between an inner wall surface of the housing and a flanged portion of the filter supporting member, so that a gap between the housing and the air breathing filter is surely sealed.

主权项

1. An electronic control device, which has a housing of a water-proof structure, comprising;
a through-hole formed in a wall of the housing so as to communicate an inside space formed in the housing to an outside of the housing; and an air breathing filter assembled to the housing, wherein the air breathing filter comprises; (a) a filter supporting member having; (a1) a cylindrical portion formed in a cylindrical shape and having an air passage formed inside of the cylindrical portion and extending in an axial direction of the cylindrical portion; (a2) a fitting portion formed in an outer peripheral surface of the cylindrical portion at a position close to a first axial end of the cylindrical portion; and (a3) a flanged portion formed at a second axial end of the cylindrical portion and extending in a radial-outward direction of the cylindrical portion from the outer peripheral surface of the cylindrical portion; (b) a water-shedding film attached to the first axial end of the cylindrical portion so as to close an open end of the air passage; (c) a filter cover member, which is fixed to the filter supporting member and composed of; (c1) a cover plate portion covering the water-shedding film; (c2) a leg portion extending from the cover plate portion in a direction to the filter supporting member; and (c3) a fitting portion integrally formed with the leg portion and fitted to the fitting portion of the filter supporting member; and (d) a water-proof sealing member formed in an annular shape, wherein the filter supporting member is inserted into the trough-hole from the inside space of the housing, the filter cover member is assembled to the filter supporting member from the outside of the housing, a pushing portion is formed either in the filter cover member or in the filter supporting member, the pushing portion is supported by the outer peripheral surface of the cylindrical portion, the water-proof sealing member surrounds the outer peripheral surface of the cylindrical portion and is interposed between an inner wall surface of the housing and the flanged portion.