US 12,270,486 B2
Electromagnetic valve
Ying Shi, Zhejiang (CN); and Liwei Wu, Zhejiang (CN)
Assigned to ZHEJIANG SANHUA AUTOMOTIVE COMPONENTS CO., LTD., Zhejiang (CN)
Appl. No. 18/038,464
Filed by ZHEJIANG SANHUA AUTOMOTIVE COMPONENTS CO., LTD., Zhejiang (CN)
PCT Filed Nov. 23, 2021, PCT No. PCT/CN2021/132294
§ 371(c)(1), (2) Date May 24, 2023,
PCT Pub. No. WO2022/111440, PCT Pub. Date Jun. 2, 2022.
Claims priority of application No. 202022747221.9 (CN), filed on Nov. 24, 2020.
Prior Publication US 2024/0011575 A1, Jan. 11, 2024
Int. Cl. F16K 31/06 (2006.01)
CPC F16K 31/0696 (2013.01) [F16K 31/0675 (2013.01)] 6 Claims
OG exemplary drawing
 
1. An electromagnetic valve, comprising an iron core assembly, a sleeve, a first spring and a buffer member, wherein part of the iron core assembly is arranged on an inner periphery of the sleeve, the sleeve comprises a bottom portion, in an axial direction of the sleeve, the bottom portion is located at one end of the sleeve, the iron core assembly comprises a hole portion, wherein the hole portion is provided with holes, the hole has an opening toward the bottom portion on the iron core assembly, and at least part of the first spring is located in the hole; wherein, in the axial direction of the sleeve, part of the buffer member is located between the bottom portion and the first spring, one end of the buffer member is in contact with the bottom portion, and one end of the first spring is in contact with the buffer member, the iron core assembly is able to be contact with the buffer member,
wherein the iron core assembly comprises a movable iron core and a valve stem, the hole portion is arranged on the movable iron core, in the axial direction of the sleeve, the hole is extended through the movable iron core, part of the valve stem is located in the hole, and the valve stem is limitedly connected with the hole portion; wherein, in the axial direction of the sleeve, at least part of the first spring is located between the buffer member and the valve stem, the other end of the first spring abuts against the valve stem,
wherein the buffer member comprises a main body portion and a branch portion, the main body portion comprises a first wall and a second wall; wherein, in the axial direction of the sleeve, the first wall is in contact with the bottom portion, the second wall is in contact with the first spring, the second wall is capable of being in contact with the movable iron core; the branch portion protrudes toward the movable iron core relative to the second wall, the branch portion is integrated with the main body portion and is embedded in the first spring,
wherein the valve stem comprises a second convex portion, the second convex portion is formed on the limit boss of the valve stem; wherein, in the axial direction of the sleeve, the second convex portion protrudes toward the bottom portion of the sleeve relative to the limit boss of the valve stem; wherein the buffer member is provided with an accommodating cavity, and the accommodating cavity has an opening facing the limit boss of the valve stem in the buffer member; wherein the second convex portion is located in the accommodating cavity, and the second convex portion is in clearance fit with the accommodating cavity.