Patent ID: 7270102

Claim:
A resin intake manifold comprising: at least two separated bodies in which protrusions of weld portions are connected to each other in accordance with a vibration welding; and a cover wall in which one of said weld portions is arranged in an inner side or an outer side of said protrusion with leaving space with said protrusion, wherein said protrusions of the weld portions are respectively provided with parallel protrusion portions extending in parallel to a vibrating direction of the vibration welding, wherein a cover wall arranged at a position in an orthogonal direction to the vibrating direction in said parallel protrusion portions is provided with an extension portion extending to the separated body in the other side welded to the separated body provided with said cover wall, in such a manner as to prevent a burr generated at a time of welding said parallel protrusion portion from getting over said cover wall arranged at the position in the orthogonal to said vibrating direction in said parallel protrusion portion, and wherein a recess groove receiving said extension portion is arranged in a side of said other side separated body, wherein each parallel protrusion portion terminates at a leading end thereof and the extension portion is disposed apart from and extends parallel to one of the parallel protrusion portions with the extension protrusion terminating beyond the leading end of the one parallel protrusion portion.