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CN-224229155-U - Lightweight shock absorber

CN224229155UCN 224229155 UCN224229155 UCN 224229155UCN-224229155-U

Abstract

The utility model relates to the technical field of automobile vibration dampers, in particular to a lightweight vibration damper which comprises a vibration damper assembly, a double-layer upper support, a vibration isolation inner core, a compression buffer block, an outer sleeve dustproof cylinder and an inner sleeve dustproof cylinder, compared with the prior art, the utility model adopts a punching steel double-layer upper support structure, combines the strength advantage of a punching process and the cost benefit of steel, reduces the weight by 15 percent compared with aluminum alloy, and simultaneously improves the compressive strength by 30 percent, thereby avoiding the use of a complex reinforcing rib structure, reducing the material cost, the development difficulty of the vibration damper and the mold opening difficulty of parts, and simultaneously improving the integral performance and the reliability of the vibration damper; the dual dust cover with layered inside and outside reduces the invasion amount of sediment to below 20% of the traditional structure, remarkably prolongs the service life of the buffer block and the oil seal, improves the durability and the dust resistance of the shock absorber, and has the characteristics of ‌ easy maintenance, easy disassembly and assembly and high suitability.

Inventors

  • CHU ZHUJIN

Assignees

  • 上海汇众萨克斯减振器有限公司

Dates

Publication Date
20260512
Application Date
20250606

Claims (10)

  1. 1. A lightweight shock absorber comprises a shock absorber assembly, a double-layer upper support, a vibration isolation inner core, a compression buffer block, an outer sleeve dustproof cylinder and an inner sleeve dustproof cylinder, and is characterized in that the shock absorber assembly (1) is of a double-cylinder hydraulic shock absorber structure, the shock absorber assembly (1) comprises a piston rod (1-1), a dustproof cover (1-2), an outer cylinder (1-3), an inner cylinder (1-4), an oil seal (1-5), a guider (1-6), a restoration buffer block (1-7), a restoration buffer block seat (1-8), a piston valve system (1-9), a bottom valve system (1-10) and a bottom cover (1-11), the outer cylinder (1-3) is of a tubular structure with a thin upper part and a thick lower part, the bottom of the outer cylinder (1-3) is welded with the bottom cover (1-11), a top curled edge structure of the outer cylinder (1-3) props against the end face of the oil seal (1-5), the dustproof cover (1-2) is installed outside the top of the outer cylinder (1-3) in an interference manner, the inner cylinder (1-4) is located in the inner cylinder (1-3), the bottom of the outer cylinder (1-3) is provided with the bottom cover (1-4), a guide (1-6) is arranged between the other end of the inner cylinder barrel (1-4) and the oil seal (1-5), one end of the piston rod (1-1) is positioned in the inner cylinder barrel (1-4), the restoring buffer block seat (1-8) is sleeved and clamped outside one end of the piston rod (1-1), the restoring buffer block (1-7) is arranged on the restoring buffer block seat (1-8), a piston valve system (1-9) is arranged at one end of the piston rod (1-1), the other end of the piston rod (1-1) penetrates through the guide (1-6), the oil seal (1-5) and the dustproof cover (1-2), and then is connected with the double-layer upper support (2), the vibration isolation inner core (3) and the compression buffer block (4) are respectively sleeved outside the piston rod (1-1), the vibration isolation inner core (3) is arranged inside the double-layer upper support (2), the upper end of the compression buffer block (4) is embedded into the lower end of the upper support (2), the upper end of the outer sleeve (5) is connected with the upper support (2), the lower end of the outer sleeve (5) penetrates through the guide (1-6) and the lower end of the outer sleeve (4) to the compression buffer block (4) and extends to the lower end of the compression assembly (6), one surface of the dust cover (1-2) facing the compression buffer block (4) is provided with a rough structure; The double-layer upper support (2) comprises a first shell (2-1), a second shell (2-2), a top plate (2-3) and a locking cover plate (2-4), wherein the top plate (2-3) is arranged at the upper end of the first shell (2-1), the locking cover plate (2-4) is arranged in the center of the top plate (2-3), the first shell (2-1) is provided with an upper end clamping structure (2-1-1) which is turned outwards, the upper end clamping structure (2-1-1) clamps the inner wall clamping structure (5-1) of the outer sleeve dustproof cylinder (5), the upper end of the second shell (2-2) is inserted into the lower end of the first shell (2-1), the second shell (2-2) is in interference fit with the first shell (2-1), an outer step of the second shell (2-2) props against the inner wall bayonet (5-2) of the outer sleeve dustproof cylinder (5), and the lower end clamping groove (2-2-1) of the second shell (2-2) clamps the compression buffer block (4).
  2. 2. The lightweight shock absorber according to claim 1, wherein the piston rod (1-1) is a chromeplated solid steel column, threaded ends are respectively arranged at two ends of the piston rod (1-1), and an inner hexagonal counter bore is formed in the end face of the threaded end connected with the double-layer upper support (2).
  3. 3. The light shock absorber according to claim 1, wherein the bottom of the bottom cover (1-11) is welded with a lower hanging ring (1-12), and the lower bushing (1-13) is installed in the through hole of the lower hanging ring (1-12) in an interference manner.
  4. 4. The light shock absorber according to claim 1, wherein the piston valve system (1-9) and the base valve system (1-10) comprise valve bodies and valve plates, the valve bodies are provided with orifices, and a plurality of overlapped valve plates are arranged in the valve bodies in an internal pressure mode.
  5. 5. The lightweight shock absorber according to claim 1, wherein the dust cover (1-2) is a fiberglass plastic stamping part, the oil seal (1-5) is a single-spring framework rubber oil seal, the guide (1-6) is a flange block with steps and through holes, and self-lubricating bushings are arranged in the through holes.
  6. 6. The light shock absorber of claim 1, wherein the roughness structure comprises bumps, ribs and bumps, and the height of the roughness structure is 0.5-1 mm.
  7. 7. The lightweight shock absorber according to claim 1, wherein the vibration isolation inner core (3) comprises a rubber flange block (3-1), a steel skeleton (3-2) and a steel baffle (3-3), the rubber flange block (3-1) is provided with a transverse through inner hole, the steel skeleton (3-2) is embedded in the inner hole, the steel baffle (3-3) is arranged at the bottom of the rubber flange block (3-1), and the inner hole of the steel baffle (3-3) is conical.
  8. 8. The lightweight shock absorber of claim 1, wherein the compression buffer block (4) is of a conical structure, a transverse through hole is formed in the conical structure, first protruding ribs (4-2) are uniformly distributed in the through hole, protruding points (4-3) are uniformly distributed at the upper end of the conical structure, an outer clamping groove (4-1) is formed in the surface of the lower end, close to the dust cover (1-2), of the conical structure, inner wall buckles (6-1) at the upper end of the inner sleeve dust barrel (6) are clamped by the outer clamping groove (4-1), and second protruding ribs (6-2) are uniformly distributed on the inner wall at the lower end of the inner sleeve dust barrel (6).
  9. 9. The lightweight shock absorber according to claim 1, wherein the piston rod (1-1) is directly connected with the double-layer upper support (2) through a lock nut (7), the lock nut (7) is in threaded connection with the piston rod (1-1), the end part of the lock nut (7) abuts against the upper end of the lock cover plate (2-4), the lock cover plate (2-4) abuts against the upper end of the top plate (2-3), and a locking nylon ring (7-1) is arranged inside the lock nut (7).
  10. 10. The lightweight shock absorber according to claim 1, wherein the edges of the top plate (2-3) are uniformly provided with mounting holes (2-3-1), the surface and the back of the top plate (2-3) are provided with a plurality of weight reduction grooves (2-3-2), and the locking cover plate (2-4) is provided with flanges (2-4-1).

Description

Lightweight shock absorber Technical Field The utility model relates to the technical field of automobile vibration dampers, in particular to a lightweight vibration damper. Background The traditional shock absorber upper support adopts an aluminum alloy independent structure, and although the weight reduction can be realized, the following defects exist: The material strength is insufficient, namely the aluminum alloy framework is easy to generate stress concentration at the annular groove to cause fracture under long-term alternating load, so that the safety of the whole vehicle is affected; The single-layer dust cover is difficult to completely block sediment invasion, and accelerates abrasion of the buffer block and the oil seal; The cost contradicts with the weight, and the existing light weight proposal needs to compensate rigidity through a complex reinforcing rib structure, thereby leading to the rise of material cost. At present, the improvement scheme of the shock absorber mainly improves the self-adaptive performance of the shock absorber by optimizing the valve body structure, but the inherent defects of the upper support structure are not overcome. There are also technical solutions for reducing weight by adopting a double-layer skeleton embedded bearing design, but still rely on aluminum alloy materials. Therefore, it is necessary to design a lightweight damper, which has improved compression strength and dust resistance while reducing the weight, and which is lightweight and has improved durability in a low cost manner. Disclosure of utility model The utility model aims to overcome the defects of the prior art, and provides a lightweight shock absorber, which has the advantages of improving the compressive strength and the dustproof performance while reducing the weight, and realizing the weight reduction and the durability improvement of the shock absorber in a low-cost mode. In order to achieve the above object, the utility model is a lightweight shock absorber, comprising a shock absorber assembly, a double-layer upper support, a vibration isolation inner core, a compression buffer block, an outer sleeve dust-proof cylinder and an inner sleeve dust-proof cylinder, wherein the shock absorber assembly is of a double-cylinder hydraulic shock absorber structure, the shock absorber assembly comprises a piston rod, a dust cover, an outer cylinder, an inner cylinder, an oil seal, a guide, a restoration buffer block seat, a piston valve system, a bottom valve system and a bottom cover, the outer cylinder is of a tubular structure with a thick upper part and a thick lower part, the bottom of the outer cylinder is welded with the bottom cover, a top curled structure of the outer cylinder butts against the end face of the oil seal, the dust cover is in interference fit outside the top of the outer cylinder, the inner cylinder is positioned inside the outer cylinder, a bottom valve system is arranged between one end of the inner cylinder and the bottom cover, a guide is arranged between the other end of the inner cylinder and the oil seal, one end of the piston rod is positioned in the inner cylinder, the restoration buffer block seat is sleeved and clamped outside one end of the piston rod, the restoration buffer block is arranged on the restoration buffer block seat, one end of the piston rod is provided with a piston system, the other end of the piston rod penetrates through the guide, the oil seal and the double-layer upper support and the dust cover, is connected with the double-layer upper support, the compression buffer block is connected with the compression buffer block and the inner sleeve is connected to the compression buffer cylinder, the compression buffer cylinder and the compression buffer cylinder is arranged on the inner cylinder, the compression buffer cylinder and the compression buffer cylinder is connected to the compression buffer cylinder. The double-layer upper support comprises a first shell, a second shell, a top plate and a locking cover plate, wherein the top plate is arranged at the upper end of the first shell, the locking cover plate is arranged at the center of the top plate, the first shell is provided with an upper end clamping structure which is turned outwards, the upper end clamping structure clamps the inner wall clamping structure of the outer sleeve dustproof barrel, the upper end of the second shell is inserted into the lower end of the first shell, the second shell is in interference fit with the first shell, an outer step of the second shell props against the inner wall bayonet of the outer sleeve dustproof barrel, and the lower end clamping groove of the second shell clamps the compression buffer block. The piston rod is a chromeplated solid steel column, the two ends of the piston rod are respectively provided with a threaded end, and the end face of the threaded end connected with the double-layer upper support is provided with an inner hexagonal counter