CN211117332U

CN211117332U - Hydraulic bushing, swing arm assembly and automobile

Info

Publication number: CN211117332U
Application number: CN201921886875.0U
Authority: CN
Inventors: 廖美颖
Original assignee: Guangzhou Automobile Group Co Ltd
Current assignee: Guangzhou Automobile Group Co Ltd
Priority date: 2019-11-04
Filing date: 2019-11-04
Publication date: 2020-07-28
Anticipated expiration: 2029-11-04

Abstract

The utility model belongs to the technical field of automobile parts, a hydraulic pressure bush, swing arm assembly and car is related to, including outer tube, inner tube, skeleton and the stopper that is equipped with the runner, it has rubber main spring to vulcanize between inner tube and the skeleton, is equipped with a plurality of vacuoles on the rubber main spring, and the stopper is located the vacuole and is used for restricting the elastic deformation volume in vacuole, and the runner is used for each vacuole of intercommunication, is equipped with sealing rubber on the inner wall of outer tube and sealing rubber is located between stopper and the outer tube, rubber main spring and sealing rubber laminating. Through set up sealing rubber on the inner wall of outer tube and sealing rubber is located between stopper and the outer tube, can avoid outer tube and stopper hard contact for when stopper and outer tube take place the striking, can not produce the abnormal sound. The rubber main spring is attached to the sealing rubber, so that liquid in the liquid cavity can be prevented from leaking outwards, the sealing rubber is arranged on the inner wall of the outer tube, and the consistency of the structure can be better guaranteed when the rubber main spring is attached to the sealing rubber.

Description

Hydraulic bushing, swing arm assembly and automobile

Technical Field

The utility model belongs to the technical field of automobile parts, especially, relate to a hydraulic pressure bush, swing arm assembly and car.

Background

The bushing is used as a part in an automobile swing arm assembly and plays an important role in the comfort level of an automobile, the bushing is generally divided into a traditional rubber bushing and a hydraulic bushing, wherein the traditional rubber bushing is limited in damping, so that the vibration of an automobile body caused by bumpy road surfaces, rapid acceleration or rapid deceleration cannot be rapidly attenuated, and the application range is more and more limited; the hydraulic bushing has the advantages of being capable of providing large damping under the condition of low frequency and large amplitude, and the like, and is adopted by more and more automobile swing arm assemblies. The hydraulic bushing structure needs to be designed with consideration to the problems of liquid leakage and abnormal sound, the forms are various, and if the problems of liquid leakage and abnormal sound occur, the running quality of the whole vehicle is affected, and customer complaints are caused.

The sealing structure of the common hydraulic bushing is arranged on the framework, and because the hollow and solid directional rigidities of the rubber main spring of the hydraulic bushing are different (the rigidity in the hollow direction is small and the rigidity in the solid direction is large), a certain ovality exists after the diameter reduction of the framework is completed, the problem of sealing performance between the outer pipe and the framework is caused, and the problem of liquid leakage of the hydraulic bushing is easily caused. And because stopper and outer tube are the stereoplasm structure, when stopper and outer tube take place the striking, produce the abnormal sound easily, influence whole car quality of traveling.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: the hydraulic bushing, the swing arm assembly and the automobile are provided for solving the problems of liquid leakage and abnormal sound of the existing hydraulic bushing in use.

For solving the technical problem, the embodiment of the utility model provides a hydraulic bushing, include outer tube, inner tube, skeleton and be equipped with the stopper of runner, the inner tube with vulcanize between the skeleton has rubber main spring, be equipped with a plurality of vacuoles on the rubber main spring, the stopper is located the vacuole is interior and be used for the restriction the elastic deformation volume of vacuole, the runner is used for communicating each the vacuole, be equipped with sealing rubber on the inner wall of outer tube and sealing rubber is located the stopper with between the outer tube, rubber main spring with the sealing rubber laminating.

Optionally, the inner sides of the two ends of the sealing rubber are both provided with sealing lips, and the sealing lips are attached to the rubber main spring.

Optionally, the pipe walls at the two ends of the outer pipe are respectively flanged inwards.

Optionally, the skeleton is an integrally formed tubular structure with a middle portion necked inwards.

Optionally, the large diameter portion of the bobbin exposes the rubber main spring and is bonded to the sealing rubber.

Optionally, the limiting block comprises a limiting body and limiting rubber, the limiting rubber is arranged on one side of the limiting body facing the rubber main spring, and the flow channel is arranged on one side of the limiting body facing the outer tube; the two ends of the limiting body, which are located on the circumferential direction of the hydraulic bushing, are erected on the rubber main spring.

Optionally, a side of the limiting rubber facing the rubber main spring is provided with stripes.

Optionally, the two liquid chambers are arranged symmetrically with respect to the central axis of the main rubber spring; the limiting blocks are two and are respectively arranged in the liquid cavity.

On the other hand, the utility model also provides a swing arm assembly, including the swing arm body with as above the hydraulic pressure bush, the inner tube interference pressure equipment of hydraulic pressure bush in the dabber of swing arm body.

On the other hand, the utility model also provides an automobile, including foretell swing arm assembly.

The embodiment of the utility model provides a hydraulic pressure bush, swing arm assembly and car, compared with the prior art, through set up sealing rubber on the inner wall of outer tube and sealing rubber is located between stopper and the outer tube, can avoid outer tube and stopper hard contact, sealing rubber plays the effect of buffering for when stopper and outer tube take place to strike, can not produce the abnormal sound, improve the shock attenuation effect, make the stopper need not to set up second grade buffer again simultaneously, practice thrift the cost, increased the notes liquid space of sap cavity. The rubber main spring is attached to the sealing rubber, so that liquid in the liquid cavity can be prevented from leaking outwards, the sealing rubber is arranged on the inner wall of the outer tube, and when the rubber main spring is attached to the sealing rubber, the structural consistency can be better guaranteed, the sealing effect is better, and the liquid leakage is not easy to occur.

Drawings

Fig. 1 is a cross-sectional view of a hydraulic bushing according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of the tube and the sealing rubber of FIG. 1;

FIG. 3 is a schematic diagram of the framework of FIG. 1;

FIG. 4 is an assembly view of the inner tube, the frame, the main spring and the stop block of FIG. 1;

fig. 5 is a schematic structural diagram of a limiting block in fig. 1.

The reference numerals in the specification are as follows:

1. an outer tube;

2. an inner tube;

3. a framework; 31. a large diameter portion; 32. lightening holes;

4. a limiting block; 41. a flow channel; 42. a limiting body; 43. limiting rubber; 431. stripes;

5. a rubber main spring; 51. a liquid chamber;

6. sealing rubber; 61. and sealing the lip.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

As shown in fig. 1 and 4, the embodiment of the utility model provides a hydraulic pressure bush structure, including outer tube 1, inner tube 2, skeleton 3 and the stopper 4 that is equipped with runner 41, it has rubber main spring 5 to vulcanize between inner tube 2 and the skeleton 3, is equipped with a plurality of vacuoles 51 on the rubber main spring 5, stopper 4 is located in vacuole 51 and is used for restricting the elastic deformation volume of vacuole 51, runner 41 is used for each vacuole 51 of intercommunication, is equipped with sealing rubber 6 on the inner wall of outer tube 1 and sealing rubber 6 is located between stopper 4 and the outer tube 1, rubber main spring 5 and the laminating of sealing rubber 6.

The embodiment of the utility model provides a hydraulic pressure bush structure, compared with the prior art, through set up sealing rubber 6 on the inner wall of outer tube 1 and sealing rubber 6 is located between stopper 4 and the outer tube 1, can avoid outer tube 1 and stopper 4 hard contact, sealing rubber 6 plays the effect of buffering, when stopper 4 takes place the striking with outer tube 1, can not produce the abnormal sound, improve the shock attenuation effect, make stopper 4 need not to set up second grade buffer again simultaneously, the cost is saved, the notes liquid space of sap cavity 51 has been increased. Rubber main spring 5 and the laminating of sealing rubber 6 can prevent that the liquid in the sap cavity 51 from leaking outward to set up sealing rubber 6 on the inner wall of outer tube 1, when rubber main spring 5 and sealing rubber 6 laminating, can guarantee the uniformity of structure better, make sealed effect better, be difficult to the problem of weeping.

In one embodiment, as shown in fig. 2, the sealing rubber 6 is provided with sealing lips 61 on the inner sides of both ends, and the sealing lips 61 are attached to the rubber main spring 5. The sealing lip 61 can further improve the sealing property and prevent the liquid in the liquid chamber 51 from leaking.

Specifically, two sets of seal lips 61 are provided at each end of the seal rubber 6. So that the sealing effect is better.

In one embodiment, as shown in fig. 2, the tube walls of the two ends of the outer tube 1 are flanged inward respectively. Sealing can be ensured, and the liquid in the liquid cavity 51 can be further prevented from leaking.

In one embodiment, as shown in fig. 3, the frame 3 is a tubular structure formed integrally and necked inward at the center. Skeleton 3 has played the effect of supporting rubber main spring 5 to for split type welded structure, skeleton 3 sets up to the integrated into one piece structure, can increase skeleton 3's necking down volume under the prerequisite of avoiding the skeleton fracture to a great extent, makes the tensile stress in the rubber main spring 5 can obtain fully releasing, improves rubber main spring 5's durability to a great extent, makes the life of hydraulic pressure bush obtain promoting by a wide margin.

In one embodiment, as shown in fig. 1, 3 and 4, the large diameter portion 31 of the bobbin 3 exposes the rubber main spring 5 and is attached to the sealing rubber 6. By the adhesion of the large diameter portion 31 to the sealing rubber 6, the liquid in the liquid chamber 51 can be more effectively prevented from leaking.

Preferably, as shown in fig. 1, the large diameter portion 31 and the rubber main spring 5 are simultaneously attached to the sealing lip 61, so that the sealing effect is better.

In one embodiment, the rubber main spring 5 and the large diameter portion 31 are in interference fit with the outer tube 1, and play a role in fixing and improving the fit tightness.

In one embodiment, as shown in fig. 3, the wall of the frame 3 is provided with lightening holes 32. The weight of the framework 3 is lighter, and the lightweight design of the hydraulic bushing is facilitated.

In an embodiment, as shown in fig. 5, the limiting block 4 includes a limiting body 42 and a limiting rubber 43, the limiting body 42 is a hard member (such as a plastic member), the limiting rubber 43 is disposed on one side of the limiting body 42 facing the rubber main spring 5, and the flow channel 41 is disposed on one side of the limiting body 42 facing the outer tube 1; both ends of the stopper body 42 in the circumferential direction of the hydraulic bushing are bridged on the rubber main spring 5. Receive radial force at rubber master spring 5 and produce elastic deformation for when the liquid chamber 51 space diminishes, the chamber wall extrusion stopper 4 of liquid chamber 51, stopper 4 has played the effect of restriction extruded degree, can prevent to produce the abnormal sound when the chamber wall of liquid chamber 51 collides with stopper 4 through setting up spacing rubber 43.

In an embodiment, as shown in fig. 5, a stripe 431 is disposed on a side of the limiting rubber 43 facing the rubber main spring 5 to reduce a contact area between the limiting rubber 43 and the rubber main spring 5, so as to improve an abnormal sound prevention effect.

Specifically, the liquid chamber 51 has an opening toward the outer tube 1 to facilitate the installation of the stopper 4.

In one embodiment, as shown in fig. 1, the liquid chambers 51 are provided in two and are arranged symmetrically with respect to the central axis of the rubber mainspring 5; the stop blocks 4 are two and are respectively arranged in a liquid cavity 51. Making the construction of the hydraulic bushing more reliable and facilitating the circulation of the liquid in the liquid chamber 51. When the inner tube 2 is subjected to a radial force toward one side of the liquid chamber 51, the rubber main spring 5 is elastically deformed, the space of the liquid chamber 51 which is pressed becomes smaller, and the liquid flows into the liquid chamber 51 which is not pressed through the flow passage 41, so that a large damping is formed, and the vibration damping characteristic of the hydraulic bushing is improved.

Preferably, two flow passages 41 are provided on each of the stoppers 4 to improve the liquid flow efficiency.

On the other hand, the utility model also provides a swing arm assembly, including swing arm body (not shown) and as above-mentioned and hydraulic bushing, 2 interference pressfittings of inner tube of hydraulic bushing are in the dabber of swing arm body. When the swing arm body moves, the inner tube 2 is subjected to radial force towards one side of the liquid cavity 51, the rubber main spring 5 generates elastic deformation, the space of the extruded liquid cavity 51 is reduced, liquid flows into the liquid cavity 51 which is not extruded through the flow channel 41 to form large damping, and the motion displacement of the swing arm body in the front-back direction can be controlled through the limiting effect of the limiting block 4, so that the displacement of the tire in the front-back direction is controlled, and the tire is prevented from interfering with a mudguard.

On the other hand, the utility model also provides an automobile, including as above the swing arm assembly.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a hydraulic bushing, includes outer tube, inner tube, skeleton and the stopper that is equipped with the runner, the inner tube with vulcanize between the skeleton has rubber main spring, be equipped with a plurality of sap cavities on the rubber main spring, the stopper is located in the sap cavity and be used for the restriction the elastic deformation volume in sap cavity, the runner is used for communicateing each the sap cavity, its characterized in that, be equipped with sealing rubber on the inner wall of outer tube and sealing rubber is located the stopper with between the outer tube, rubber main spring with the sealing rubber laminating.

2. The hydraulic bushing according to claim 1, wherein a sealing lip is provided on an inner side of each of both ends of the sealing rubber, and the sealing lip is attached to the rubber main spring.

3. The hydraulic bushing of claim 1, wherein the tube walls at both ends of the outer tube are flanged inward, respectively.

4. The hydraulic bushing of claim 1 wherein the cage is an integrally formed and inwardly necked tubular structure.

5. The hydraulic bushing of claim 4, wherein the large diameter portion of the skeleton exposes the rubber main spring and is attached to the sealing rubber.

6. The hydraulic bushing according to claim 1, wherein the stopper comprises a stopper body and a stopper rubber, the stopper rubber is disposed on a side of the stopper body facing the rubber main spring, and the flow channel is disposed on a side of the stopper body facing the outer tube; the two ends of the limiting body, which are located on the circumferential direction of the hydraulic bushing, are erected on the rubber main spring.

7. The hydraulic bushing of claim 6, wherein a side of the stopper rubber facing the main rubber spring is provided with striations.

8. The hydraulic bushing of claim 1, wherein the fluid chambers are provided in two and are arranged symmetrically with respect to a central axis of the main rubber spring; the limiting blocks are two and are respectively arranged in the liquid cavity.

9. A swing arm assembly comprising a swing arm body, and further comprising a hydraulic bushing as claimed in any one of claims 1 to 8, wherein an inner tube of the hydraulic bushing is press-fitted onto a spindle of the swing arm body by interference fit.

10. An automobile comprising the swing arm assembly of claim 9.