To provide a vehicle external noise reduction device capable of reducing noise that is propagated (radiated) to the lateral sides of a vehicle through an underfloor of the vehicle.SOLUTION: A vehicle external noise reduction device 1R includes a groove-shaped part having a belt-shaped bottom wall part extending in a vehicle longitudinal direction and a pair of side wall parts respectively extending in the vehicle longitudinal direction along opposite ends in the width direction of the bottom wall part and extending upward from the opposite ends in the width direction of the bottom wall part. One side wall part of the pair of side wall parts that is located on an inner side in a vehicle width direction includes a sound absorbing portion made of sound absorbing material, and the other side wall part is positioned on the inner side in the vehicle width direction relative to a butting part of an inner locker panel and an outer locker panel.SELECTED DRAWING: Figure 6
【課題】車両の床下を通って、車両の側方へ伝播(放射)される騒音を低減できる車外騒音低減装置を提供する。【解決手段】車外騒音低減装置1Rは、車両前後方向に延設された帯状の底壁部、及び底壁部の幅方向における両端部に沿って車両前後方向へ延設され、且つ前記底壁部の幅方向における両端部から上方へそれぞれ延設された一対の側壁部を有する溝形部を備え、前記一対の側壁部のうちの一方の側壁部であって、車幅方向における内側に位置する側壁部が、吸音材で構成された吸音部を含み、且つ他方の側壁部が前記内側ロッカーパネルと前記外側ロッカーパネルとの突き合わせ部よりも車幅方向における内側に配置される。【選択図】図6
VEHICLE EXTERNAL NOISE REDUCTION DEVICE
車外騒音低減装置
2021-10-11
Patent
Elektronische Ressource
Japanisch
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