COWL SILENCER

• Main Authors: KOSAKAI AKIRA, OKADA TAKEJI, SHIMOSATO TAKESHI
• Format: Patent
• Language: English; Japanese
• Published: 23.03.2015
• Subjects: LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS; MOTOR VEHICLES; PERFORMING OPERATIONS; TRAILERS; TRANSPORTING; VEHICLES IN GENERAL; VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISEPROVIDED FOR

PROBLEM TO BE SOLVED: To solve a problem that according to existing technology, noise insulation is possible only to a lower part of a flange clamping part 13 and noises in an engine room are transmitted into a vehicle interior through a cowl 3.SOLUTION: In a cowl silencer 1, an upper part 11 covering a cowl upper 5 and a lower part 12 covering at least a part of a cowl inner 6 are joinedly provided, a flange clamping part 13 is provided at a boundary portion between the upper part 11 and the lower part 12 for covering a joint flange 8, and further a through hole 14 is provided in the flange clamping part 13 for allowing an instrument panel assembling piece 9 to pass through. With this, the cowl silencer 1 can be provided in a narrow space between an instrument panel 2 and a cowl 3, and noises in an engine room can be inhibited from entering a vehicle interior. 【課題】既存の技術では、フランジ挟持部１３の下部までしか遮音ができず、エンジンルームの音がカウル３を介して車室内へ伝達する不具合がある。【解決手段】カウルサイレンサ１は、カウルアッパ５を覆うアッパパーツ１１と、カウルインナ６の少なくとも一部を覆うロアパーツ１２とを繋げて設け、アッパパーツ１１とロアパーツ１２の境界部に接合フランジ８を覆うフランジ挟持部１３を設け、さらにフランジ挟持部１３にインパネ組付片９を貫通させる貫通穴１４を設ける。これにより、インパネ２とカウル３との間の狭い空間にカウルサイレンサ１を設けることができ、エンジンルームの音がカウル３を介して車室内へ侵入するのを抑えることができる。【選択図】 図１