PROBLEM TO BE SOLVED: To obtain a ventilation duct capable of improving ventilation performance while preventing the entry of outdoor air.SOLUTION: A ventilation duct 10 comprises: a duct body that includes an opening 38 communicating a cabin interior A with a cabin exterior B and an attachment pin 46 provided in an upper edge portion 44 of the opening 38 and protruding toward the cabin exterior B; and an opening/closing valve 22 that includes an insertion hole 52A into which the attachment pin 46 is inserted, that covers the opening 38 by being inserted into the duct body to be able to oscillate, and that is formed such that a clearance S2 between the attachment pin 46 and a cabin exterior B-side hole edge of the insertion hole 52A near an oscillating tip end of the opening/closing valve 22 is larger than a clearance S1 between the attachment pin 46 and a cabin interior A-side hole edge of the insertion hole 52A near the oscillating tip end of the opening/closing valve 22 in a closed state of the opening 38.
【課題】外気の侵入を防ぎつつ、換気性能を向上させることができるベントダクトを得る。【解決手段】ベントダクト10は、車室内Aと車室外Bとを連通する開口38を備え、開口38の上縁部44に車室外B側へ突出する取付ピン46が設けられたダクト本体と、取付ピン46に挿通される挿通孔52Aを備え、ダクト本体に対して揺動可能に挿通されて開口38を覆うと共に、開口38を閉塞した閉塞状態で取付ピン46と挿通孔52Aにおける車室外B側の揺動される弁先端側の孔縁との間の隙間S2が、取付ピン46と挿通孔52Aにおける車室内A側の揺動される弁先端側の孔縁との間の隙間S1より大きく形成された開閉弁22と、を有する。【選択図】図4
VENTILATION DUCT
ベントダクト
2015-10-01
Patent
Elektronische Ressource
Japanisch
IPC: | B60H ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES , Anordnung oder Einbau der Heizung, Kühlung, Lüftung oder anderer Luftbehandlungsvorrichtungen für die Fahrzeugräume für Reisende oder Fracht |