Title:
流路切換弁
Document Type and Number:
Japanese Patent JP7032848
Kind Code:
B2
Abstract:
To provide a flow channel changeover valve restricting the wear degradation over time, increase in size and in cost of manufacture of a valve body.SOLUTION: A flow channel changeover valve comprises: a casing having a pair of end walls for closing both ends of tubular type peripheral side wall and a cylinder; an input formed on the peripheral wall of the casing; a pair of outputs formed on the casing peripheral side wall at circumferential direction intervals; and a valve assembly having a valve body disposed in the casing for opening/closing the outputs, and a rotary shaft to which the valve body is attached and one end is inserted in a shaft insertion hole formed in one of the casing end walls and the other end is rotatably supported by the other of the casing end walls. The valve body has a cam rod; and the casing end wall has cam grooves. The cam grooves include: a central part that forms an arc with a constant radius of curvature; and both ends curved radially outward from both ends of the central part. One of both ends faces one of the outlets and the other of both ends faces the other of the outlets.SELECTED DRAWING: Figure 3
Inventors:
Yoshihito Saai
Application Number:
JP2017221637A
Publication Date:
March 09, 2022
Filing Date:
November 17, 2017
Export Citation:
Assignee:
Dunley Co., Ltd.
International Classes:
F16K11/076; F16K5/04; F16K11/085
Domestic Patent References:
| JP50078921A | ||||
| JP2013057352A |
Attorney, Agent or Firm:
Yoshihiko Sakaguchi