Insulating layer with integral grommets

B - Operations – Transporting – 60 – R

Patent

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Details

B60R 13/08 (2006.01) E04B 1/84 (2006.01) G10K 11/16 (2006.01)

Patent

CA 2259207

An acoustical barrier (10) is mounted to the barrier wall (20) of a motor vehicle. The acoustical barrier (10) includes a mass layer (12) of molded construction and sound dampening characteristics. The mass layer (12) includes a plurality of grommets (14, 14', 14", 54) integrally molded as a single piece with a lower surface of the mass layer. Each grommet (14, 14', 14", 54) has a continuous wall with an inner peripheral surface (27, 27', 27") with an upper portion of the wall integrally formed with the inner surface (18) of the mass layer and a lower portion of the wall having a lower edge (22, 22', 22") abutting the barrier wall (20). The inner surface (27, 27', 27") of the continuous wall defines an opening in each grommet (14, 14', 14", 54). A plurality of openings (25, 25', 25") in the mass layer are in communication with at least some of the grommet openings. Various fasteners (26, 70), shafts or sleeves (62), cables (64), wires, and other vehicle accessories can extend through one or more of the grommets and through corresponding openings (29) in the vehicle barrier wall (20).

Une barrière acoustique (10), fixée sur la paroi coupe-feu (20) d'un véhicule à moteur, comprend une couche masse (12) moulée présentant des caractéristiques d'amortissement acoustique. La couche masse (12) comporte une pluralité d'oeillets (14, 14', 14", 54) moulés en monobloc avec sa surface inférieure. Chaque oeillet (14, 14', 14", 54) comporte une paroi continue avec une surface périphérique interne (27, 27', 27"). La partie supérieure de la paroi est formée en monobloc avec la surface interne (18) de la couche masse et sa partie inférieure présente un bord inférieur (22, 22', 22") qui bute contre la paroi coupe-feu (20). La surface interne (27, 27', 27") de la paroi continue définit un orifice dans chaque oeillet (14, 14', 14", 54). Une pluralité d'orifices (25, 25', 25") creusés dans la couche masse sont en communication avec au moins certains des orifices des oeillets. Divers systèmes de fixation (26, 70), tiges ou gaines (62), câbles (64), fils et autres accessoires de véhicule peuvent traverser un ou plusieurs oeillets, ainsi que les orifices correspondants (29) de la paroi coupe-feu (20) du véhicule.

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