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CN-122014894-A - Electromagnetic valve for chassis supporting air suspension of vehicle and vehicle

CN122014894ACN 122014894 ACN122014894 ACN 122014894ACN-122014894-A

Abstract

The invention discloses an electromagnetic valve of an air suspension supported by a chassis of a vehicle and the vehicle, and relates to the technical field of air circuit valves. The electromagnetic valve comprises a valve body, a movable iron core, a sealing plug and a lifting spring, wherein a valve cavity is formed in the valve body, a first ventilation hole and a second ventilation hole are formed in the valve body, the movable iron core is movably arranged in the valve cavity, the sealing plug is arranged at one end of the movable iron core, a hollow part is formed in the sealing plug, the lifting spring is at least partially positioned in the valve cavity and connected to one side, far away from the movable iron core, of the sealing plug, the sealing plug closes the second ventilation hole in a valve closing mode, the sealing plug is in a compressed state under the pushing of the lifting spring, the sealing plug opens the second ventilation hole in a valve opening mode, and the hollow part is in a compressed state under the pushing of the lifting spring. The electromagnetic valve adopts a simplified structure to realize a secondary stroke opening function, reduces the number of parts and assembly process and reduces assembly cost while effectively reducing airflow noise and mechanical abrasion.

Inventors

  • ZHANG HAITAO
  • WANG HUIHUI
  • GU HAOWEI
  • MA JUN

Assignees

  • 安闻科技集团股份有限公司

Dates

Publication Date
20260512
Application Date
20260326

Claims (10)

  1. 1. A chassis-supported air suspension solenoid valve for a vehicle, comprising: The valve comprises a valve body (10), wherein a valve cavity (V1) is arranged in the valve body (10), and a first vent hole (11) and a second vent hole (12) are formed in the valve body; a movable iron core (22), wherein the movable iron core (22) is movably arranged in the valve cavity (V1) along the axial direction; a sealing plug (30), wherein the sealing plug (30) is arranged at one end of the movable iron core (22) facing the second ventilation hole (12), and a hollow part (34) is arranged on the sealing plug (30); A lifting spring (51), wherein the lifting spring (51) is at least partially positioned in the valve cavity (V1) and is connected to one side of the sealing plug (30) away from the movable iron core (22); The chassis supporting air suspension electromagnetic valve (100) for the vehicle is provided with a valve closing mode, the sealing plug (30) closes the second ventilation hole (12) in the valve closing mode, and the sealing plug (30) is in a compressed state under the pushing of the lifting spring (51); the chassis supporting air suspension electromagnetic valve (100) for the vehicle is provided with a valve opening mode, the sealing plug (30) is used for opening the second ventilation hole (12) in the valve opening mode, and the hollow part (34) is in a compressed state under the pushing of the lifting spring (51) by the sealing plug (30).
  2. 2. Chassis-supporting air suspension solenoid valve for vehicles according to claim 1, characterised in that said hollow (34) comprises at least one through hole.
  3. 3. The chassis-supporting air suspension solenoid valve for a vehicle according to claim 1, characterized in that said sealing plug (30) has a sealing outer peripheral surface in contact engagement with the inner peripheral surface of said valve chamber (V1), and a first end surface connected to an end of said sealing outer peripheral surface facing said second vent hole (12); In the valve closing mode, the first ventilation holes (11) and the second ventilation holes (12) are positioned on two sides of the first end face; In the valve opening mode, the second vent hole (12) is positioned on the same side of the first end face as at least part of the first vent hole (11).
  4. 4. The chassis-supporting air suspension solenoid valve for a vehicle according to claim 1, characterized in that an end surface of said plunger (22) facing said second ventilation hole (12) is provided with a groove (24), said groove (24) comprising: A narrow mouth section (243); -a wide mouth section (244), the wide mouth section (244) being located on a side of the narrow mouth section (243) remote from the second ventilation aperture (12); The sealing plug (30) further comprises a sealing inner sheet (31), a sealing outer sheet (32) and a sealing neck section (33) between the sealing inner sheet (31) and the sealing outer sheet, wherein the sealing inner sheet (31) is positioned in the wide-mouth section (244), the sealing outer sheet (32) is positioned on one side of the movable iron core (22) facing the second ventilation hole (12), and the sealing neck section (33) is connected between the sealing inner sheet (31) and the sealing outer section and is positioned in the narrow-mouth section (243); The hollow portion (34) is provided on the seal outer sheet (32).
  5. 5. The vehicle chassis supporting air suspension solenoid valve according to claim 4 wherein said hollow portion (34) includes a plurality of through holes and is circumferentially spaced on said sealing outer sheet (32).
  6. 6. The chassis supporting air suspension solenoid valve for a vehicle according to claim 1, further comprising a stationary iron core (21), said stationary iron core (21) being provided on said valve body (10), and said stationary iron core (21) and said second ventilation hole (12) being located at both ends of said valve body (10); The valve body (10) comprises: The sleeve (15), the said quiet iron core (21) is set up in one end of the said sleeve (15); A valve seat (14), wherein the valve seat (14) is connected to the other end of the sleeve (15); The valve seat core (13), be equipped with on valve seat core (13) second ventilation hole (12), the periphery of valve seat core (13) is equipped with and connects core outer tube (131) of disk seat (14), be equipped with on core outer tube (131) first ventilation hole (11).
  7. 7. The chassis-supported air suspension solenoid valve for a vehicle according to claim 6, characterized in that said valve seat core (13) is an integral piece, said valve seat core (13) being fixedly connected with said valve seat (14) by injection molding.
  8. 8. The chassis-supported air suspension solenoid valve for a vehicle according to claim 7, characterized in that a core boss (132) protruding toward said sealing plug (30) is further provided on said valve seat core (13), and said second ventilation hole (12) is provided on said core boss (132); the lifting spring (51) is sleeved outside the core boss (132) and is propped against the sealing plug (30).
  9. 9. Chassis-supported air suspension solenoid valve for vehicles according to claim 8, characterised in that the outer diameter of said lifting spring (51) is smaller than the diameter of said sealing plug (30).
  10. 10. A vehicle comprising a chassis-supporting air suspension solenoid valve (100) for a vehicle according to any one of claims 1-9.

Description

Electromagnetic valve for chassis supporting air suspension of vehicle and vehicle Technical Field The invention relates to the technical field of air circuit valves, in particular to an electromagnetic valve of an air suspension for supporting a chassis of a vehicle and the vehicle. Background The automobile air suspension system controls the on-off of the air circuit through the electromagnetic valve, so that the air storage tank and the air spring are inflated and exhausted. However, the traditional solenoid valve adopts a movable iron core rigid driving sealing assembly, so that air flow impact noise and mechanical squeal are easy to generate under high-frequency working conditions, and the sealing surface is quickly worn due to repeated rigid collision, so that the service life is shortened. In order to solve the problems, a secondary stroke opening scheme is introduced in part of the prior art, namely, the small stroke is pre-opened and the large stroke is fully opened. However, the existing structure for realizing the function is extremely complex, and usually, the valve seat core, the sleeve, the static/movable iron core, the multi-stage spring, the valve rod, the sleeve, the sealing plug and other parts are required to be precisely matched. The method not only causes complicated assembly process, large accumulated tolerance and difficult guarantee of secondary opening precision, but also increases the cost of parts and manufacturing cost. Therefore, how to simplify the electromagnetic valve structure, reduce the number of parts and reduce the assembly cost on the premise of ensuring the two-stage stroke opening effect is a technical problem to be solved in the field. Disclosure of Invention The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the first aspect of the present invention aims to provide a chassis support air suspension solenoid valve for a vehicle, which adopts a simplified structure to realize a secondary stroke opening function, and reduces the number of parts and assembly process and assembly cost while effectively reducing airflow noise and mechanical abrasion. A second aspect of the present invention is directed to a vehicle having the above-described chassis support air suspension solenoid valve. According to the embodiment of the invention, the vehicle chassis support air suspension electromagnetic valve comprises a valve body, a movable iron core, a sealing plug and a lifting spring, wherein a valve cavity is formed in the valve body, a first vent hole and a second vent hole are formed in the valve cavity, the movable iron core is axially and movably arranged in the valve cavity, the sealing plug is arranged at one end, facing the second vent hole, of the movable iron core, a hollow part is arranged on the sealing plug, the lifting spring is at least partially arranged in the valve cavity and connected to one side, far away from the movable iron core, of the sealing plug, the vehicle chassis support air suspension electromagnetic valve is provided with a valve closing mode, the sealing plug closes the second vent hole in the valve closing mode, the sealing plug is in a compressed state under the pushing of the lifting spring, the vehicle chassis support air suspension electromagnetic valve is provided with a valve opening mode, the sealing plug opens the second vent hole in the valve opening mode, and the sealing plug is in the compressed state under the pushing of the lifting spring. According to the electromagnetic valve for the chassis supporting air suspension of the embodiment of the application, the buffer function realized by the traditional multistage complex parts is replaced by the controllable elastic compression and stretching deformation of the hollow part under the action of the lifting spring through the cooperative matching structure of the sealing plug with the hollow part and the lifting spring. On the premise of realizing the two-stage stroke opening function, the application effectively reduces the airflow noise and the mechanical abrasion, simultaneously reduces the number of parts, simplifies the assembly process and reduces the assembly cost. In some embodiments, the hollow portion includes at least one through hole. Optionally, the sealing plug has a sealing outer peripheral surface and a first end surface, the sealing outer peripheral surface is in contact fit with the inner peripheral surface of the valve cavity, and the first end surface is connected to one end of the sealing outer peripheral surface, which faces the second ventilation hole; in the valve closing mode, the first vent hole and the second vent hole are positioned at two sides of the first end face; in the valve opening mode, the second vent hole and at least part of the first vent hole are positioned on the same side of the first end face. Further alternatively, the end face of the movable iron core, which faces the second vent