Arrangement for preventing noise immission into inner space, particularly passenger compartment of motor vehicle, comprises acoustically effective molded part arranged in free space, which seals off vent hole against noise immission

摘要

The arrangement comprises a forced venting system ensuring a pressure reduction in the inner space is assigned to the inner space, which is formed by a venting channel (4) that is guided from the inner space to the outside. An acoustically effective molded part (9') made of plastic or metal foam is arranged in a free space, which laterally and circumstantially seals off a vent hole (4a) against the noise immission. The molded part is extended through the vent hole and is supported or fixed to the vehicle body wall (5), and has a through-hole (11a) or recess in the area of the vent hole.