US 12,421,880 B2
Exhaust valve and method for manufacturing same
Tetsuaki Nomura, Isesaki (JP)
Assigned to SANKEI GIKEN KOGYO CO., LTD., Tokyo (JP)
Appl. No. 18/283,046
Filed by SANKEI GIKEN KOGYO CO., LTD., Tokyo (JP)
PCT Filed Mar. 26, 2021, PCT No. PCT/JP2021/013157
§ 371(c)(1), (2) Date Sep. 20, 2023,
PCT Pub. No. WO2022/201557, PCT Pub. Date Sep. 29, 2022.
Prior Publication US 2024/0167405 A1, May 23, 2024
Int. Cl. F01N 1/18 (2006.01); F01N 1/16 (2006.01); F16K 1/22 (2006.01); F16K 1/226 (2006.01)
CPC F01N 1/18 (2013.01) [F01N 1/165 (2013.01)] 4 Claims
OG exemplary drawing
 
1. An exhaust valve comprising:
a pipe body connecting an upstream pipe and a downstream pipe for exhaust;
a valve plate disposed inside the pipe body in a state of being attached to a rotary shaft that rotates by drive of an actuator, the valve plate configured to rotate to open/close an exhaust flow path inside the pipe body; and
a stopper fixed inside the pipe body, wherein
the stopper is a member including, formed integrally, a base portion including an insertion hole configured to receive insertion of the rotary shaft, a first contact portion extending along an inner peripheral surface of the pipe body on one side of the base portion upstream and downstream of the exhaust, and a second contact portion extending along the inner peripheral side of the pipe body on another side of the base portion upstream and downstream of the exhaust, on a side opposite to the first contact portion, and
the valve plate comes into contact with the first contact portion and the second contact portion at a position at which the valve plate closes the exhaust flow path,
wherein the stopper is an integral member comprising the base portion, the first contact portion and the second contact portion,
the insertion hole of the base portion is located at a substantial center of the base portion such that the insertion hole is entirely surrounded by the base portion.