Patent ID: 7322381

Claim:
An intake duct comprising: a duct main body formed into a hollow tubular shape having an intake passageway in an interior thereof through which outside air is introduced into an internal combustion engine, the duct main body including a plurality of divided bodies made of a thermoplastic resin connected integrally with one another to form an opening for a communication between an inside and outside of the intake passageway in a duct wall of the divided body; and an air-permeable member which is provided by insert molding in the divided bodies so as to cover the opening and whose outer edge as a joining portion is impregnated with the thermoplastic resin, wherein the divided bodies have a vertical wall portion which protrudes outwards from a duct wall of the divided bodies along at least a part of an inner edge of the opening, and at least a part of the joining portion of the air-permeable member is embedded in the vertical wall portion so as to be held therein in a thickness direction thereof.