| 摘要 |
PROBLEM TO BE SOLVED: To provide a fuel pipe 30 which achieves a smooth flow of fuel at the time of supplying fuel and is superior in layout flexibility. SOLUTION: The fuel pipe 30 connects a filler neck 20 with a fuel tank FT and has a first connection part 31 of straight form, a first bellows part 32, and a second bellows part 33. The second bellows part 33 has concavo-convex form with identically shaped mountain portions and valley portions being alternately arranged at approximately a constant pitch. The first bellows part 32 has concavo-convex form with mountain portions and valley portions being alternately arranged, while the depth of the valley portions on the outer surface of the first bellows part 32 is gradually made larger, as the valley portions are located continually toward the second bellows part 33 and in the direction from the first connection part 31 side to the second bellows part 33 side, the depth is gradually made larger so that it is made nearer to the depth of the valley portions of the second bellows part 33 at approximately the same pitch as that with the second bellows part 33, whereas the inside surface of the first bellows part 32 is formed of a curved surface along the valley portion with approximately a constant wall thickness. COPYRIGHT: (C)2010,JPO&INPIT
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