| 摘要 |
PROBLEM TO BE SOLVED: To relax concentration of stress at a certain part when two surfaces facing each other of a fuel tank body move relatively to each other.SOLUTION: The fuel tank 22 includes: a built-in component 26 protruding from one of the facing surfaces of the fuel tank body 24 to the other of the facing surfaces and a storage part 36 being formed at the protrusion end thereof; and a protrusion part 44 protruding from the other of the facing surfaces and the protrusion end thereof being stored in the storage part 36 while spacing apart from an inner surface of the storage part 36.SELECTED DRAWING: Figure 3 |
