PROBLEM TO BE SOLVED: To provide a sound shielding structure of a passenger compartment floor which enables improvement of the ability of shielding sounds from a floor panel without needlessly increasing mass and density of a floor carpet.SOLUTION: A floor carpet 20 is installed on a floor panel 1 forming a passenger compartment floor surface. The floor carpet 20 has: a surface cover 21; and a cushion material 22 which is disposed at a lower surface side of the surface cover 21 to form an air circulation layer. The air circulation layer communicates with a reinforcement member positioned near the floor carpet 20, for example, a closed cross section space D11 in a cross member 11. It is preferable to seal a peripheral edge part of the floor carpet 20 so as to prevent the air circulation layer from communicating with a passenger compartment interior space. Further, it is preferable to form the closed cross section space D11 in the cross member 11 into a sealed structure so as to prevent the closed cross section space D11 from communicating with the interior space of the passenger compartment and an exterior part.SELECTED DRAWING: Figure 4
【課題】フロアカーペットの質量や密度をいたずらに大きくすることなく、フロアパネルからの遮音性を高めることができるようにする。【解決手段】車室床面を構成するフロアパネル1上にフロアカーペット20が敷設される。フロアカーペット20が、表皮21と、表皮21の下面側に配設されて空気の流通層を形成するクッション材22と、を有する。空気の流通層が、フロアカーペット20近傍に位置される補強部材、例えばクロスメンバ11内の閉断面空間D11と連通される。フロアカーペット20の周縁部を、空気の流通層が車室内空間と連通されるのを防止するようにシールするのが好ましい。また、クロスメンバ11内の閉断面空間D11は、車室内や外部と連通されないように密閉構造とするのが好ましい。【選択図】 図4
SOUND SHIELDING STRUCTURE OF PASSENGER COMPARTMENT FLOOR
車室フロアの遮音構造
2016-12-08
Patent
Electronic Resource
Japanese
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