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CN-121989605-A - Split type hydraulic swing arm bushing for chassis, suspension assembly and chassis

CN121989605ACN 121989605 ACN121989605 ACN 121989605ACN-121989605-A

Abstract

The invention provides a split type hydraulic swing arm bushing for a chassis, a suspension assembly and the chassis, which relate to the technical field of chassis suspension, wherein the split type hydraulic swing arm bushing for the chassis comprises an outer tube, the outer pipe is internally provided with a hydraulic bushing and a pure rubber bushing, the pure rubber bushing is connected with the hydraulic bushing in a pressing mode, and the pure rubber bushing and the hydraulic bushing are fixed by necking the outer pipe. According to the split type hydraulic swing arm bushing for the chassis, the pure rubber outer skeleton is pressed in the outer tube, and the rigidity performance and the hydraulic performance of a part can be adjusted separately through the combined design of the pure rubber bushing and the hydraulic bushing, so that the dynamic rigidity of the whole bushing is effectively reduced while the durability and the damping performance are met, the high-frequency performance of the bushing is improved well, the generation of high-frequency howling of a motor is effectively restrained, and the NVH comfort of the whole automobile is improved.

Inventors

  • WANG TINGJIE
  • CHEN QINGBIN
  • XIE FAN
  • CHEN CHANGPING

Assignees

  • 安徽中鼎减震橡胶技术有限公司

Dates

Publication Date
20260508
Application Date
20260402

Claims (8)

  1. 1. The utility model provides a split type hydraulic swing arm bush for chassis, includes outer tube (1), its characterized in that, set up hydraulic bushing and pure rubber bush in outer tube (1), pure rubber bush with hydraulic bushing pressure equipment links to each other, through right outer tube (1) is necking down and is rolled up the mouth in order to realize pure rubber bush, hydraulic bushing are fixed.
  2. 2. The split type hydraulic swing arm bushing for the chassis according to claim 1, wherein the hydraulic bushing comprises a hydraulic inner cage (9), a hydraulic inner skeleton (5) and hydraulic rubber (6), the hydraulic rubber (6) is filled between the hydraulic inner skeleton (5) and the hydraulic inner cage (9), a hydraulic chamber is formed between the hydraulic rubber (6) and the outer pipe (1) and is used for containing liquid (8), two hydraulic chambers are symmetrically arranged along the central axis of the hydraulic inner skeleton (5), and the two hydraulic chambers are mutually communicated through a runner (7).
  3. 3. The split type hydraulic swing arm bushing for the chassis according to claim 1, wherein the pure rubber bushing comprises a pure rubber outer framework (2), pure rubber (3) and a pure rubber inner framework (4), the pure rubber outer framework (2) is arranged close to the outer tube (1), and the pure rubber (3) is filled between the pure rubber outer framework (2) and the pure rubber inner framework (4).
  4. 4. A split hydraulic swing arm bushing for a chassis according to claim 3, wherein the pure rubber bushing is shrink-press-fitted into the outer tube (1) after vulcanization, and the outer tube (1) is shrink-fit with the pure rubber bushing after necking and rolling.
  5. 5. The split hydraulic swing arm bushing for the chassis according to claim 4, wherein the hydraulic bushing comprises a hydraulic inner frame (5), the pure rubber inner frame (4) and the hydraulic inner frame (5) are coaxially arranged and are respectively provided with a first mounting hole (41) and a second mounting hole (51), and the first mounting hole (41) and the second mounting hole (51) are respectively used for connecting the swing arm and the auxiliary frame.
  6. 6. The split type hydraulic swing arm bushing for the chassis according to claim 5, wherein the pure rubber inner frame (4) is provided with a limiting groove at one end close to the hydraulic inner frame (5), the limiting groove is annular and is coaxially arranged with the first mounting hole (41), and the hydraulic inner frame (5) is partially inserted into the limiting groove.
  7. 7. A suspension assembly, characterized by comprising the split hydraulic swing arm bushing for a chassis according to any one of claims 1-6, further comprising a control arm and a subframe, wherein the control arm is connected with the subframe through the split hydraulic swing arm bushing for a chassis.
  8. 8. A chassis comprising the suspension assembly of claim 7.

Description

Split type hydraulic swing arm bushing for chassis, suspension assembly and chassis Technical Field The invention relates to the technical field of chassis bushings, in particular to a split type hydraulic swing arm bushing for a chassis, a suspension assembly and the chassis. Background The suspension swing arm chassis bushing is one of the essential parts of the automobile chassis, and has the main functions of vibration isolation and support of the swing arm and the auxiliary frame. At present, with the innovation of new markets of automobiles worldwide, the performance requirements on the swing arm bush are also higher and higher, and particularly, the rear bush of the front suspension swing arm is also higher and higher. At present, the hydraulic bushing has more excellent driving comfort, but compared with the pure rubber bushing, the high-frequency noise of the hydraulic bushing is deteriorated, and the technical problem of how to consider the high-frequency noise and the driving comfort is urgent to be solved. Disclosure of Invention The invention solves the problem how to make the rear bushing for the front suspension lower swing arm compatible with high-frequency noise and driving comfort. In order to solve the problems, the invention provides a split type hydraulic swing arm bushing for a chassis, which comprises an outer pipe, wherein a hydraulic bushing and a pure rubber bushing are arranged in the outer pipe, the pure rubber bushing is connected with the hydraulic bushing in a pressing manner, and the pure rubber bushing and the hydraulic bushing are fixed by necking and rolling the outer pipe. Preferably, the hydraulic bushing comprises a hydraulic inner cage, a hydraulic inner skeleton and hydraulic rubber, wherein the hydraulic rubber is filled between the hydraulic inner skeleton and the hydraulic inner cage, a hydraulic chamber is formed between the hydraulic rubber and the outer tube and is used for containing liquid, two hydraulic chambers are symmetrically arranged along the central axis of the hydraulic inner skeleton, and the two hydraulic chambers are mutually communicated through a runner. Preferably, the pure rubber bushing comprises a pure rubber outer framework, pure rubber and a pure rubber inner framework, wherein the pure rubber outer framework is arranged close to the outer tube, and the pure rubber is filled between the pure rubber outer framework and the pure rubber inner framework. Preferably, the pure rubber bushing is reduced in diameter and is pressed into the outer tube after being vulcanized, and the necking and rolling mouth of the outer tube is in interference fit with the pure rubber bushing. Preferably, the periphery side of the hydraulic rubber is provided with a sealing rib, the sealing rib extends along the central shaft direction of the outer tube, and the sealing rib is in interference fit with the outer tube. Preferably, the hydraulic bushing comprises a hydraulic inner skeleton, the pure rubber inner skeleton and the hydraulic inner skeleton are coaxially arranged and respectively provided with a first mounting hole and a second mounting hole, and the first mounting hole and the second mounting hole are respectively used for connecting the swing arm and the auxiliary frame. Preferably, the pure rubber inner skeleton is provided with a limit groove at one end close to the hydraulic inner skeleton, the limit groove is annular and is coaxially arranged with the first mounting hole, and the hydraulic inner skeleton is partially inserted into the limit groove. Preferably, the hydraulic inner skeleton is provided with an annular protruding portion, the hydraulic rubber covers the peripheral outer wall of the protruding portion, and the protruding portion is in interference fit with the limiting groove. Preferably, the inner wall surface of the inner pure rubber skeleton is provided with at least one first groove, the first groove extends along the central axis direction of the inner pure rubber skeleton, the inner wall surface of the inner hydraulic skeleton is provided with at least one second groove, and the second groove extends along the central axis of the inner hydraulic skeleton. This setting aligns first recess, second recess in order to realize accurate location between the two when the assembly. The invention also provides a suspension assembly which comprises the split type hydraulic swing arm bushing for the chassis, and further comprises a control arm and an auxiliary frame, wherein the control arm is connected with the auxiliary frame through the split type hydraulic swing arm bushing for the chassis. The invention also provides a chassis, which comprises the suspension assembly. Compared with the prior art, the split type hydraulic swing arm bushing for the chassis, the suspension assembly and the chassis have the advantages that 1) the rigidity performance and the hydraulic performance of parts can be adjusted separately by combining the pure rub