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CN-121993529-A - Air spring stiffness valve and vehicle system thereof

CN121993529ACN 121993529 ACN121993529 ACN 121993529ACN-121993529-A

Abstract

The invention provides a hollow spring stiffness valve and a vehicle system thereof, which are characterized in that a mechanism of a sealing assembly is improved, a sealing plug is provided with a containing groove, the sealing assembly is at least partially positioned in the containing 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 sealing plug, the sealing plug can axially move relative to a valve seat part, the base part is always in dynamic sealing fit with an inner edge part, no matter whether a valve port part of the hollow spring stiffness valve is in an opening state or a closing state or the valve is in an intermediate actuation state, the base part of the sealing assembly is always in dynamic sealing fit with the inner edge part of the valve seat assembly, the influence of external pressure is less, and the reliability of the sealing fit between the valve seat part and the sealing plug is relatively improved.

Inventors

  • Request for anonymity
  • 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 component, a connecting seat, a movable core, a valve rod, a sealing plug and a sealing assembly, wherein the valve seat component is in a split or integrated structure, the valve seat component is provided with a valve opening part and an inner edge part, 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 part; The sealing plug is provided with a containing groove recessed from the outer surface of the sealing plug, the sealing assembly is at least partially located in the containing 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 sealing plug, the sealing plug can axially move relative to the valve seat part, and the base part is always in dynamic sealing fit with the inner edge part.
  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 to the base, the outer side of the base is in hard sealing engagement with the inner rim, the O-ring is in soft sealing engagement with the sealing plug, and a gap S is formed between the inner rim and the outer surface of the sealing plug.
  3. 3. The air spring stiffness valve according to claim 2, wherein the receiving groove includes an upper wall, a lower wall, and a bottom wall, one side of the base portion abuts against the upper wall, the other side of the base portion abuts against the lower wall, and the O-ring abuts against the bottom wall.
  4. 4. The air spring rigidity valve according to claim 1 wherein the sealing plug is of a split or unitary construction, the sealing plug comprising a first body portion and a second body portion fixedly connected to the first body portion, the lower wall of the first body portion, the upper wall of the second body portion and the outer wall generally defining the receiving recess.
  5. 5. The air spring rigidity valve according to claim 1, further comprising an outer tube and a sealing ring, wherein the valve seat component is arranged in a split mode and comprises a valve seat and a supporting seat, the outer tube is in riveting fit with the valve seat, the connecting seat and the valve seat are located on different sides of the supporting seat, the upper surface of the supporting seat abuts against the connecting seat, the lower surface of the supporting seat abuts against the valve 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.
  6. 6. The air spring stiffness valve according to claim 5, wherein the tapered 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 outward from one side of the large diameter portion in a circumferential direction, the extension portion abutting against an inner wall of the outer tube.
  7. 7. The air spring rigidity valve according to claim 5, 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, an upper surface of the support seat is abutted against a lower end surface of the connection seat, and the support seat includes a lower surface abutted against the valve seat.
  8. 8. The air spring rigidity valve according to claim 1, comprising an outer tube, wherein the valve seat component is of a split structure and comprises a valve seat and a supporting seat, the connecting seat and the valve seat are positioned on different sides of the supporting seat, 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 which is arranged corresponding to the valve seat step portion, the valve seat comprises a riveting portion positioned below the guide portion, the outer tube comprises a straight portion and a deformation portion, the straight portion is in guide fit with the guide portion, and the deformation portion is in rivet press deformation and is propped against the riveting portion.
  9. 9. The air spring stiffness valve according to claim 8, 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.
  10. 10. A hollow spring stiffness valve according to any of the claims 1-9 wherein the height of the inner rim portion is larger than the height of the mounting groove in the axial direction of the sealing plug.
  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 1-9.

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 the 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, the internal leakage is easy to occur. The invention provides an air spring rigidity valve which comprises a valve seat part, a connecting seat, a movable core, a valve rod, a sealing plug and a sealing assembly, wherein the valve seat part is arranged in a split or integrated structure, the valve seat part is provided with a valve opening part and an inner edge part, 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 part; The sealing plug is provided with a containing groove recessed from the outer surface of the sealing plug, the sealing assembly is at least partially located in the containing 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 sealing plug, the sealing plug can axially move relative to the valve seat part, and the base part is always in dynamic sealing fit with the inner edge part. According to the hollow spring rigidity valve, the mechanism of the sealing assembly is improved, the sealing plug is provided with the accommodating groove, the sealing assembly is at least partially positioned in the accommodating groove, the sealing assembly comprises the base part and the sealing piece at least partially positioned on the base part, the sealing piece is in sealing fit with the sealing plug, the sealing plug can axially move relative to the valve seat part, the base part is always in dynamic sealing fit with the inner edge part, 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 inner edge part of the valve seat assembly, the influence of external pressure is small, and the reliability of sealing fit between the valve seat part and 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 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 rig