Air-conditioning system case and air scoop joining system for motor vehicle, has pipe with support edge supported on sound barrier material and with length lesser than or equal to thickness of case wall, where material has two layers

摘要

The system has a case wall (12) forming a pipe having a support edge (120) which is supported on a sound barrier material (61) in the periphery of an opening. The edge has a length that is lesser than or equal to the thickness of the case wall. The material includes a synthetic foam layer against a wall of the cab interior and a layer (62) that is denser than that of the foam layer.