| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a fuel leakage preventive valve wherein variation is not generated in a valve closing characteristic. <P>SOLUTION: A float valve 4 is arranged in a chamber defined in a housing so as to vertically move, and the float valve 4 opens/closes a valve seat of the housing communicating to the outside. In the leakage preventive valve, a projecting step portion 13 bulging upward is formed at an upper surface center of the float valve 4, and on the other hand, a retainer 20 fixed on an upper surface side of the float valve 4 is provided. The retainer 20 has a flange portion 21 covering the upper surface of the float valve 4, and a cage portion 22 rising from the flange portion 21 and defining a storage space 23 between the cage portion 22 and a projecting step portion 13 of the float valve 4. A valve plate 26 opening/closing the valve seat of the housing is rockably provided in the storage space 23 defined by the cage portion 22. The storage space 23 communicates the upper surface of the flange porion 21 of the retainer 20 at a lower side through a communicating hole 25. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
