| 摘要 |
PROBLEM TO BE SOLVED: To provide the valve in a simple structure which is recovered automatically, and is opened and closed under an inside-and-outside pressure difference.SOLUTION: The valve body 10, which consists of an elastic body deformable radially, is provided between the inlet member 20 and the outlet member 30 and formed into a cylindrical shape so as to surround a flow passage between an inlet 21 and an outlet 31. The valve body 14, which can open and close either the inlet or the outlet, is arranged on the central part of the valve body 10, and a plurality of connection parts 15, which can change the angle between the inner circumference face of the valve body 10 and the outer circumference face of the valve body 14, are connected. Each connection part 15 inclines to an axial line. When the valve body 10 is transformed radially under the difference of inside pressure and the outside pressure of the valve body 10, either the inlet 21 or the inlet head 31 is opened or closed because of the valve body 14 displaced in the axial direction by changing the inclination angle of the connection part in the axial line. |
