To provide a passage control valve that can smooth a rotation of a movable valve element without play without causing leakage from between a movable opening and a stationary opening in communication.
The passage control valve 1 is so constructed that a fluid inlet 2b and the movable opening 4 are formed in the movable valve element 2, a plurality of stationary openings 5 are formed in an inner peripheral wall 3a of a stationary valve element 3, and the movable valve element 2 is rotatably fitted in the stationary valve element 3, where the movable valve element 2 is rotated to connect the movable opening 4 to the stationary openings 5 selectively. Protruding rib portions 9 are formed on an outer peripheral wall 2a of the movable valve element 2 for contact with the inner peripheral wall 3a of the stationary valve element 3. The protruding rib portions 9 include a plurality of lateral ribs 9a arranged around the cylinder axis of the movable valve element 2 and a plurality of longitudinal ribs 9b arranged along the cylinder axis of the movable valve element 2, and the movable opening 4 is formed in the outer peripheral wall 2a of the movable valve element 2 enclosed by the lateral ribs 9a and longitudinal ribs 9b.
ROKUSHIMA KAZUMASA
ITO YOSHIYASU
SHIBATA HISANORI
YAMAGUCHI SHIGEYUKI
KITAMURA HITOSHI
MAEDA YASUNARI
NIBU TAKAYA
| JP2004190182A | 2004-07-08 | |||
| JPS5013499B1 | 1975-05-20 | |||
| JP2001159471A | 2001-06-12 | |||
| JPH07260019A | 1995-10-13 |
Mizuhiji Katsuhisa
Takeshi Sakaguchi
Hidetoshi Kitade