| 摘要 |
<p>A male threading element 21 is formed on an outer circumference of a closer 20 of a fuel cap 10, while a female threading element FNc is formed on an inner wall of a filler neck FN. The user holds a handle 42 and screws the closer 20 into a fuel inlet FNb of the filler neck FN to close the fuel inlet FNb. Rotation of the handle 42 in a closing direction screws the male threading element 21 into the female threading element FNc from a start end FNc1 of the female threading element FNc. A stopper 21d formed on the male threading element 21 comes into contact with the start end FNc1 of the female threading element FNc to complete the closing operation. At this full close position, a gasket GS located between the closer 20 and a sealing face FNf of the filler neck FN is pressed and displaced in an axial direction to seal the sealing face FNf of the filler neck FN with a sealing face pressure of not less than a preset level. This structure fixes the position of the handle 42 at the full close position of the fuel inlet FNb and thereby ensures the good operation performance.</p> |
