STRUCTURE OF HOSE

摘要

PURPOSE:To provide a structure of a hose which hardly admits the sending-out of undesirable material such as fuel vapor. CONSTITUTION:The structure of this hose has a bellows 14 which consists of plural crests 12 projecting to the outer side A in the radius direction, and valleys 13 positioning neighboring each other between the crests 12. The thickness D1 of the crests 12 of the bellows 14 is formed smaller than the thickness D2 of the valleys 13.