Patent ID: 7879124

Claim:
An air cleaner comprising: a housing including first and second housing members each formed with an open end and being configured so that each of the open ends are closed by being joined to each other, the open end of each of the first and second housing members having a flange portion, each flange portion projecting to the outside of a respective housing member and being mutually lapped, and the flange portions of the first and second housing members facing each other; and a filter element for filtering air taken into the housing, the filter element being assembled so as to partition an interior of the first and second housing members into regions, wherein an adsorption element for adsorbing vaporized fuel flowing in from an engine side is arranged on a side of the first housing member relative to the filter element in the housing, so as to face to the filter element, the adsorption element including an adsorbent for adsorbing the vaporized fuel and a holding frame for holding an outer peripheral edge of the adsorbent element; wherein a welding protrusion is disposed at the flange portion of the open end of each of the first and second housing members, the welding protrusion of each of the first and second housing members being disposed between the flange portions of the first and second housing members, and projecting toward the flange portion of the open end of the other of the first and second housing member; wherein the holding frame has a connecting portion provided thereon, the connecting portion being disposed between the flange portions of the first and second housing members, the connecting portion having a welding protrusion disposed between the flange portions of the first and second housing members, projecting toward the flange portion of the second housing member, and abutting the welding protrusion of the second housing member on a reverse side of the holding frame to a side on which the adsorption element is arranged via the filter element; and wherein each of the welding protrusions of the first and second housing members abuts the other welding protrusion of the first and second housing members, and the welding protrusion of the connecting portion abuts the welding protrusion of the second housing member on the reverse side to the adsorption element, whereby each of the welding protrusions are vibration welded so that the housing and the adsorption element are formed integrally.