| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fluid passage open/close valve which can reduce wear resulting from friction between a valve element and a seat, improve vibration proof property, and effectively secure sealing performance between the valve element and the seat. <P>SOLUTION: The fluid passage open/close valve 10 includes a valve element 14 disposed rotatably around an eccentric axis A1 and a movable seat 16 which can be displaced in the direction intersecting the axial direction perpendicularly. First and second annular side projections 52, 64, which project in the axial direction, are provided on the movable seat 16 and a seat opposing part 58 respectively. The movable seat 16 and the seat opposing part 58 contact each other slidably at each end surface of the first and second annular side projections 52, 64. A small sliding area can reduce sliding resistance, so that the alignment function of the movable seat 16 can be demonstrated suitably. The sliding part 70 of the movable seat 16 and the seat opposing part 58 is located outside from the contact part 51 of the valve element 14 and a seat surface 48, so that the inclination of the movable seat 16 can be prevented and the occurrence of leak can effectively be prevented. <P>COPYRIGHT: (C)2012,JPO&INPIT |
