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CN-121993528-A - Air spring stiffness valve and vehicle system thereof

CN121993528ACN 121993528 ACN121993528 ACN 121993528ACN-121993528-A

Abstract

The invention provides a hollow spring stiffness valve and a vehicle system thereof, wherein a supporting seat is provided with an accommodating groove through mechanism improvement of a sealing assembly, the sealing assembly is at least partially positioned in the accommodating groove, the sealing assembly comprises a base part and a sealing element at least partially positioned at the base part, the sealing element is in sealing fit with the supporting seat, one side part of the base part is propped against a connecting seat, the other side part of the base part is propped against the supporting seat, a sealing plug can axially move relative to the sealing assembly, the base part is always in dynamic sealing fit with the outer edge part of the sealing plug, no matter whether the valve port part of the hollow spring stiffness valve is in an opening state, a closing state or a valve is in an intermediate actuation state, the base part of the sealing assembly is always in dynamic sealing fit with the outer edge part of the sealing plug, the influence of external pressure is small, and the reliability of sealing fit between the sealing plug is relatively improved.

Inventors

  • Request for anonymity

Assignees

  • 浙江三花智能控制股份有限公司

Dates

Publication Date
20260508
Application Date
20241106

Claims (11)

  1. 1. The hollow spring rigidity valve is characterized by comprising a valve seat, a supporting seat, a connecting seat, a movable core, a valve rod, a sealing plug and a sealing assembly, wherein the valve seat is provided with a valve opening, the movable core can be close to or far away from the connecting seat, one end part of the valve rod is connected with the movable core, the other end part of the valve rod is connected with the sealing plug, and the sealing plug can be abutted against or far away from the valve opening; The connecting seat and the valve seat are located on different sides of the supporting seat, the supporting seat is provided with an accommodating groove, the sealing assembly is at least partially located in the accommodating groove, the sealing assembly comprises a base part and a sealing piece at least partially located on the base part, the sealing piece is in sealing fit with the supporting seat, one side part of the base part abuts against the connecting seat, the other side part of the base part abuts against the supporting seat, the sealing plug can axially move relative to the sealing assembly, and the base part is always in dynamic sealing fit with the outer edge part of the sealing plug.
  2. 2. The air spring rigidity valve according to claim 1, wherein the base is made of plastic material, the sealing member is an O-ring, the O-ring is at least partially limited on the base, the inner side of the base is in hard sealing fit with the outer edge, the O-ring is in soft sealing fit with the supporting seat, and a gap S is formed between the supporting seat and the outer edge.
  3. 3. The air spring rigidity valve according to claim 1, further comprising an outer tube and a sealing ring, wherein the outer tube is in rivet press fit with the valve seat, the upper surface of the supporting seat abuts against the valve seat, the lower surface of the supporting seat abuts against the connecting seat, the supporting seat comprises a conical surface portion, and the sealing ring abuts against the connecting seat, the outer tube and the conical surface portion respectively.
  4. 4. A hollow spring stiffness valve according to claim 3 wherein the conical surface portion includes a small diameter portion and a large diameter portion, the small diameter portion being closer to the connection seat than the large diameter portion, the support seat further including an extension portion protruding outwardly from one side of the large diameter portion in a circumferential direction, the extension portion abutting against an inner wall of the outer tube.
  5. 5. The air spring rigidity valve according to claim 1, wherein the connection seat is provided with a groove recessed from a lower end surface of the connection seat, the support seat is provided with a flange portion protruding from an upper surface of the support seat, and/or the connection seat is provided with a flange portion provided with a groove, the flange portion is located in the groove and is fixedly connected with a groove wall of the groove at least partially, the upper surface abuts against the lower end surface, and the support seat comprises a lower surface abutting against the valve seat.
  6. 6. The air spring rigidity valve according to claim 1, comprising an outer tube, wherein the valve seat comprises a first end face and a second end face, the second end face is higher than the first end face, a valve seat step portion is formed between the second end face and the first end face, the valve seat comprises a guide portion arranged corresponding to the valve seat step portion, the valve seat comprises a riveting portion arranged below the guide portion, the outer tube comprises a straight portion and a deformation portion, the straight portion is in guiding fit with the guide portion, and the deformation portion is in riveting deformation against the riveting portion.
  7. 7. The air spring stiffness valve according to claim 6, wherein the support seat is provided with a lower surface, and further comprising a first step portion and a second step portion, the first step portion protruding from the lower surface, the second step portion protruding from the first step portion, the lower surface abutting against the second end surface, the first step portion being in clearance fit with the first end surface, the second step portion being at least partially located in a valve seat orifice of the valve seat.
  8. 8. The air spring stiffness valve according to any one of claims 1 to 7, wherein the support base has an inner wall including a second stepped portion protruding inward from the inner wall, the inner wall forming a part of a groove wall of the accommodating groove, an upper end surface of the second stepped portion forming at least a further part of the groove wall of the accommodating groove, the seal abutting against the inner wall, one side portion of the base abutting against the connection base, and the other side portion of the base abutting against the second stepped portion.
  9. 9. The air spring stiffness valve according to any one of claims 1 to 7, wherein the connecting seat is of an integral or split structure, the connecting seat comprises a sealing head and a fixing seat fixedly connected with the sealing head, the air spring stiffness valve further comprises a sleeve, the sleeve is sleeved on the outer periphery of the movable core and part of the sealing head, the sealing head is provided with a third step part, and the sleeve abuts against and is fixedly connected with the third step part.
  10. 10. The air spring stiffness valve according to claim 9, further comprising an outer tube and a coil component, wherein the outer tube is provided with an outer tube step portion, the outer tube step portion abuts against the fixing seat, the coil component is sleeved on the outer peripheral portion of the sleeve, the coil component comprises a framework, the end socket is further provided with a fourth step portion, and the framework abuts against the fourth step portion.
  11. 11. A vehicle system comprises an air spring, wherein the air spring comprises an air spring rigidity valve and an installation cavity part, the installation cavity part is provided with a main cavity and an auxiliary cavity, the air spring rigidity valve is provided with a valve opening part, when the air spring rigidity valve is in a power-off state, the valve opening part is opened, the main cavity is communicated with the auxiliary cavity, when the air spring rigidity valve is in a power-on state, the valve opening part is closed, the main cavity is not communicated with the auxiliary cavity, the cavity wall of the auxiliary cavity is provided with a first matching hole part and a second matching hole part, the air spring rigidity valve is provided with a fourth sealing piece and a fifth sealing piece, the fourth sealing piece is in sealing fit with the first matching hole part, the fifth sealing piece is in sealing fit with the second matching hole part, and the air spring rigidity valve is of the air spring rigidity valve structure according to any one of claims 1-10.

Description

Air spring stiffness valve and vehicle system thereof [ Field of technology ] The invention relates to the technical field of automobiles, in particular to an air spring stiffness valve and an automobile system thereof. [ Background Art ] The hollow spring stiffness valve is generally applied to an automobile frame for adjusting the height of the frame and used for adjusting the stiffness of a multi-cavity hollow spring, the stiffness valve is opened, the volume of a cavity is increased, the volume of compressible gas is increased, the stiffness is reduced, the volume of the cavity is reduced, the volume of the compressible gas is reduced, the stiffness is increased, the hollow spring stiffness valve comprises a valve seat, a movable core assembly, an end socket and a sealing block component, the valve seat is provided with a valve opening, the sealing block can be abutted against or far away from the valve opening, a sealing lip component is arranged between the sealing block and the end socket, the sealing lip component comprises a supporting piece and an upper sealing lip and a lower sealing lip, the sealing block is provided with a groove, when the valve is opened, the two sealing lips are positioned in the groove, and when the valve is closed, the two sealing lips are positioned at the position with larger outer diameters of the sealing block and form sealing fit with the valve block through the extrusion deformation of the sealing lips, but the sealing structure is prone to gas leakage risk. [ Invention ] The inventor finds that one of the important reasons for generating gas leakage is that pressure exists in a cavity formed between two sealing lips and the outer circle of a sealing block, and when the pressure is higher than the pressure outside the two lips, internal leakage is easy to occur. The invention provides a hollow spring rigidity valve which comprises a valve seat, a supporting seat, a connecting seat, a movable core, a valve rod, a sealing plug and a sealing assembly, wherein the valve seat is provided with a valve opening, the movable core can be close to or far away from the connecting seat, one end part of the valve rod is connected with the movable core, the other end part of the valve rod is connected with the sealing plug, and the sealing plug can be abutted against or far away from the valve opening; The connecting seat and the valve seat are located on different sides of the supporting seat, the supporting seat is provided with an accommodating groove, the sealing assembly is at least partially located in the accommodating groove, the sealing assembly comprises a base part and a sealing piece at least partially located on the base part, the sealing piece is in sealing fit with the supporting seat, one side part of the base part abuts against the connecting seat, the other side part of the base part abuts against the supporting seat, the sealing plug can axially move relative to the sealing assembly, and the base part is always in dynamic sealing fit with the outer edge part of the sealing plug. According to the hollow spring rigidity valve provided by the invention, the supporting seat is provided with the containing groove through mechanism improvement of the sealing assembly, the sealing assembly is at least partially positioned in the containing groove, the sealing assembly comprises the base part and the sealing piece which is at least partially positioned at the base part, the sealing piece is in sealing fit with the supporting seat, one side part of the base part is propped against the connecting seat, the other side part of the base part is propped against the supporting seat, the sealing plug can axially move relative to the sealing assembly, the base part is always in dynamic sealing fit with the outer edge part of the sealing plug, no matter the valve port part of the hollow spring rigidity valve is in an opening state, a closing state or the valve is in an intermediate actuating state, the base part of the sealing assembly is always in dynamic sealing fit with the outer edge part of the sealing plug, the influence of external pressure is small, and the reliability of sealing fit between the sealing plug is relatively improved. The invention provides a vehicle system which comprises an air spring, wherein the air spring comprises an air spring rigidity valve and a mounting cavity part, the mounting cavity part is provided with a main cavity and an auxiliary cavity, the air spring rigidity valve is provided with a valve opening part, when the air spring rigidity valve is in a power-off state, the valve opening part is opened, the main cavity is communicated with the auxiliary cavity, when the air spring rigidity valve is in a power-on state, the valve opening part is closed, the main cavity is not communicated with the auxiliary cavity, the cavity wall of the auxiliary cavity is provided with a first matching hole part and a second matching hole part, the air spring rigi