| 摘要 |
The invention provides an electric valve, which can be used to reduce the sliding friction resistance close to the compression spiral spring during the opening and closing of the valve possibly, even when the decentration of the compression spiral spring and the shaft deviation of the valve occur. A coiling end of a lower side of the compression spiral spring (24) is clipped by a spring supporting member (26), and a spherical-shaped object (40) having two parts and the spring supporting member (26) as well as the valve core (25) in a point-contact manner is disposed between the same two members. A concave part (26c) used for adjusting the valve core is formed by a spherical-shaped surface, an ellipsoid-shaped surface, and a cone-shaped surface. The deepest part of the concave part is disposed on an centre of the lower surface of the spring supporting member (26) approximately. By using the concave part (26c) used for adjusting the valve core and the spherical-shaped object (40), the sliding friction resistance can be reduced. |
