US 11,965,610 B2
Electric valve and assembly method therefor
Xingkui Zhang, Zhejiang (CN); Wei Zhang, Zhejiang (CN); Yunzhi Lan, Zhejiang (CN); and Zhenshan Zhu, Zhejiang (CN)
Assigned to ZHEJIANG SANHUA AUTOMOTIVE COMPONENTS CO. LTD., Zhejiang (CN)
Appl. No. 17/915,160
Filed by ZHEJIANG SANHUA AUTOMOTIVE COMPONENTS CO., LTD., Zhejiang (CN)
PCT Filed Mar. 23, 2021, PCT No. PCT/CN2021/082237
§ 371(c)(1), (2) Date Sep. 28, 2022,
PCT Pub. No. WO2021/197117, PCT Pub. Date Oct. 7, 2021.
Claims priority of application No. 202010237881.4 (CN), filed on Mar. 30, 2020; and application No. 202011212829.X (CN), filed on Nov. 4, 2020.
Prior Publication US 2023/0120698 A1, Apr. 20, 2023
Int. Cl. F16K 5/06 (2006.01); F16K 5/08 (2006.01); F16K 27/06 (2006.01); F16K 41/04 (2006.01)
CPC F16K 5/0694 (2013.01) [F16K 5/0647 (2013.01); F16K 5/08 (2013.01); F16K 27/067 (2013.01); F16K 41/046 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An assembly method for an electric valve, wherein the electric valve comprises a dynamic sealing member and a valve stem, the dynamic sealing member comprises a first end cover, a second end cover, a connecting seat, a first sealing member and a second sealing member, and the assembly method for the electric valve comprises the following steps:
arranging the first sealing member in a first chamber of the connecting seat, arranging the second sealing member in a second chamber of the connecting seat, and press-fitting and fixing the first end cover and the second end cover respectively to the connecting seat assembled with the first sealing member and the second sealing member with interference; and
assembling the valve stem with the dynamic sealing member in a sealing medium, and pushing the valve stem to pass through the dynamic sealing member, so that a first stem portion of the valve stem is higher than the first end cover, the first sealing member is pressed between a second stem portion of the valve stem and the connecting seat, and the second sealing member is pressed between the second stem portion of the valve stem and the connecting seat.