一种空气弹簧减振器总成下连接轴承结构及空气弹簧
By designing L-shaped bearings and pressure-dividing sleeves, the problem of bearing failure caused by the sealed air pressure zone is solved, achieving stable operation under high torsion conditions, reducing friction and wear, and improving the sealing performance and lifespan of the air spring.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI BAOLONG AUTOMOTIVE TECH (ANHUI) CO LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-07-17
AI Technical Summary
Under heavy torsion conditions, existing air springs are prone to bearing failure in the sealed air pressure zone, and friction can generate abnormal noise or damage parts, affecting the life and performance of the air spring.
The structure employs an L-shaped bearing and a pressure-sharing sleeve, which distributes the pressure in the sealed air pressure zone. A pressure-bearing gasket is placed between the sealing ring and the pressure-sharing sleeve. Combined with an X-shaped sealing ring and rib design, this achieves rotational engagement between the piston and the shock absorber, reducing friction and wear.
It effectively reduces the risk of bearing failure caused by air pressure, reduces friction noise and component damage, and improves the sealing performance and lifespan of air springs.
Smart Images
Figure CN224515765U_ABST
Abstract
Claims
1. An air spring shock absorber assembly lower connecting bearing structure comprising a piston, a shock absorber, a sealed air pressure area being enclosed between the piston and the shock absorber, characterized in that, The piston rotates with the damper via an L-shaped bearing. A pressure-dividing sleeve is provided between the L-shaped bearing and the piston. One end of the pressure-dividing sleeve extends into the connection surface between the L-shaped bearing and the damper, and its size is larger than the piston flange size. The other end of the pressure-dividing sleeve extends to the bottom of the sealed air pressure zone.
2. The air spring shock absorber assembly lower connecting bearing structure of claim 1, wherein, An X-shaped sealing ring is provided at the bottom of the sealed air pressure zone, and the plane at the bottom of the X-shaped sealing ring is located above the plane at the upper end of the inner flange of the pressure dividing sleeve.
3. The air spring shock absorber assembly lower connecting bearing structure of claim 2, wherein, A pressure-bearing gasket is provided between the pressure-distributing sleeve and the X-type sealing ring.
4. The air spring shock absorber assembly lower connecting bearing structure of claim 1, wherein, The pressure-distributing sleeve includes an integrally formed horizontal connecting section one, a vertical section, and a horizontal connecting section two. The top of the vertical section of the pressure-distributing sleeve is turned inward to form horizontal connecting section one, and the top of the vertical section is turned outward to form horizontal connecting section two. Horizontal connecting section one, vertical section, and horizontal connecting section two form a Z-shaped structure. The upper flange of the pressure-distributing sleeve leaves a gap with the upper end face of the L-shaped bearing, and the lower flange overlaps with the piston and presses on the horizontal bearing surface of the L-shaped bearing.
5. The air spring shock absorber assembly lower connecting bearing structure of claim 1 wherein, L-type bearings consist of an outer ring and an inner ring that rotate together. The outer ring is connected and fastened to the piston via a pressure-dividing sleeve, and the inner ring is fixed to the vibration damper.
6. The air spring shock absorber assembly lower connecting bearing structure of claim 1, wherein, The pressure-distributing sleeve and piston are integrally formed.
7. The air spring shock absorber assembly lower connecting bearing structure of claim 1 wherein, An odd number of ribs are provided between the mating surfaces of the outer ring and the inner ring, and the inner ring and the outer ring form an interference or transition fit with the mating parts through the ribs.
8. The air spring shock absorber assembly lower connecting bearing structure of claim 1, wherein, The shock absorber is circumferentially fixed with a spring disc, which is fixed to the inner ring of the L-shaped bearing by a locating pin. A dust cover is provided on the outside of the piston. One end of the dust cover is connected to the spring disc, and the other end is fixedly connected to the guide sleeve of the air spring. The bottom of the dust cover has a recessed structure.
9. The air spring shock absorber assembly lower connecting bearing structure of claim 8, wherein, The spring disc is connected to the inner ring of the L-shaped bearing via a heightening shim.
10. An air spring characterized by, Includes the lower connecting bearing structure of the air spring damper assembly as described in any one of claims 1-9.