| 摘要 |
PROBLEM TO BE SOLVED: To provide an intake control valve capable of properly keeping sealability even when pressure difference exists between an upstream side and a downstream side.SOLUTION: An intake control valve 3 includes elastically-deformable seal portions 50 disposed at one side and the another side in a direction orthogonal to a rotating shaft 31 of a valving element 32, and sealing between an inner wall surface 25 of an intake port 2 and the valving element 32 by being kept into contact with the inner wall surface 25 of the intake port 2 at a closing position of the valving element 32. The seal portion 50 is formed into a bent shape having a first hinge portion 51a (51b) and a second hinge portion 52a (52b) acting as supporting points in elastic deformation, one of the first hinge portion 51a (51b) and the second hinge portion 52a (52b) is disposed at an upstream side of the intake port 2 and the another one is disposed at a downstream side, at the closing position of the valving element 32. |
