阅读说明：本技术 一种衬套及后扭力梁 (Bush and back torsion beam ) 是由 覃刚明 王芳 韦文杰 张德军 龙文 刘洋 李智健 梁毅 蒙顺金 申文彬 李武泉 于 2021-03-31 设计创作，主要内容包括：本发明公开一种衬套及后扭力梁,所述衬套包括从内向外依次套接的内管和外管,所述内管和所述外管通过橡胶件硫化套接,所述橡胶件的设于所述内管和所述外管之间,并延展至所述外管的两端,所述衬套包括气隙结构和镂空结构,所述气隙结构包括若干个气隙通道,每一所述气隙通道沿所述外管的轴向贯设于所述橡胶件上；所述镂空结构包括若干个镂空孔,每一所述镂空孔沿所述外管的轴向贯设于所述橡胶件上。可避免衬套扭转摩擦异响,提高舒适性和耐久性,镂空结构可调节衬套径向刚度,同时也能避免应力集中,避免扭转的时候撕裂。(The invention discloses a bushing and a rear torsion beam, wherein the bushing comprises an inner pipe and an outer pipe which are sequentially sleeved from inside to outside, the inner pipe and the outer pipe are sleeved through a rubber piece in a vulcanization mode, the rubber piece is arranged between the inner pipe and the outer pipe and extends to two ends of the outer pipe, the bushing comprises an air gap structure and a hollow structure, the air gap structure comprises a plurality of air gap channels, and each air gap channel penetrates through the rubber piece along the axial direction of the outer pipe; the hollow structure comprises a plurality of hollow holes, and each hollow hole is arranged on the rubber part along the axial direction of the outer pipe. The torsional friction abnormal sound of the lining can be avoided, the comfort and the durability are improved, the radial rigidity of the lining can be adjusted through the hollow structure, meanwhile, the stress concentration can also be avoided, and the lining is prevented from being torn in the torsional process.)

1. The utility model provides a bush, includes inner tube and the outer tube that cup joints from inside to outside in proper order, the inner tube with the outer tube is vulcanized through the rubber spare and is cup jointed, the rubber spare is located the inner tube with between the outer tube, and extend to the both ends of outer tube, its characterized in that, the bush includes:

the air gap structure comprises a plurality of air gap channels, and each air gap channel penetrates through the rubber piece along the axial direction of the outer pipe; and the number of the first and second groups,

the hollow structure comprises a plurality of hollow holes, and each hollow hole is arranged on the rubber piece along the axial direction of the outer pipe in a penetrating mode.

2. The bushing of claim 1, wherein said air gap channels and said hollowed out holes alternate in the circumferential direction of said rubber member.

3. The bushing of claim 1, wherein said air gap channel includes a first arc segment and two second arc segments, said two second arc segments disposed on opposite sides of said first arc segment, said first arc segment curving inwardly and said two second arc segments curving outwardly.

4. The bushing of claim 3, wherein said air gap structure further comprises a plurality of ribs disposed within said air gap channel and spaced apart on a sidewall of said first segment adjacent said outer tube.

5. The bushing of claim 1, wherein the opening of the hollow hole is connected with the rubber member by an arc surface.

6. The bushing according to claim 1, wherein the inner tube has a length greater than the outer tube, wherein both ends of the inner tube protrude outwardly from the outer tube to form two mounting surfaces for abutting against a torsion beam bracket, and wherein a plurality of protrusions are uniformly distributed on each mounting surface.

7. The bushing according to any one of claims 1 to 6, wherein the rubber member covers at least one end of the outer tube and forms an abutting surface for abutting against the torsion beam bracket, and a plurality of convex balls are uniformly arranged on the abutting surface.

8. A rear torsion beam, comprising:

a bushing according to any one of claims 1 to 7;

the bushing is mounted on the torsion beam support.

9. The rear torsion beam according to claim 8, wherein the bushing is provided obliquely to the torsion beam bracket.

Technical Field

The invention relates to the technical field of automobile suspension systems, in particular to a bushing and a rear torsion beam.

Background

In an automobile suspension system, a rubber bushing is used as a hinge point of each part, plays roles in guiding movement, bearing load, damping vibration and reducing noise, and is the key of the whole automobile comfort and the stable operation design. Torsion beam bushings are currently mainly divided into common rubber bushings and hydraulic bushings, and the rubber bushings are most commonly used in vehicle models. At present, the overall rigidity of the rear torsion beam rubber bushing can only be adjusted through a sizing material formula. The axial rigidity of the bushing is low, so that lateral force cannot be rapidly transmitted to a vehicle body, the responsiveness of the vehicle is seriously affected, and the bushing is arranged at an angle with the Y direction of the whole vehicle.

Disclosure of Invention

The invention mainly aims to provide a bushing and a rear torsion beam, and aims to solve the technical problems that in the prior art, the lateral force cannot be quickly transmitted to a vehicle body and the vehicle responsiveness is poor due to abnormal noise of the bushing and low axial rigidity of the bushing.

In order to achieve the above object, the present invention provides a bushing, including an inner tube and an outer tube sleeved in sequence from inside to outside, the inner tube and the outer tube are sleeved by a rubber member through vulcanization, the rubber member is disposed between the inner tube and the outer tube and extends to both ends of the outer tube, the bushing includes:

the air gap structure comprises a plurality of air gap channels, and each air gap channel penetrates through the rubber piece along the axial direction of the outer pipe; and the number of the first and second groups,

the hollow structure comprises a plurality of hollow holes, and each hollow hole is arranged on the rubber piece along the axial direction of the outer pipe in a penetrating mode.

Optionally, the air gap channels and the hollow holes are alternately arranged along the circumferential direction of the rubber piece.

Optionally, the air gap channel includes a first arc segment and two second arc segments, the two second arc segments are respectively disposed at two sides of the first arc segment, the first arc segment is inwardly bent, and the two second arc segments are outwardly bent.

Optionally, the air gap structure further includes a plurality of ribs, and the plurality of ribs are located in the air gap channel and are spaced apart from each other on the sidewall of the first arc section close to the outer tube.

Optionally, the opening of the hollow hole is connected with the rubber piece through an arc surface.

Optionally, the length of the inner tube is greater than that of the outer tube, two ends of the inner tube protrude outwards from the inner tube to form two mounting surfaces for abutting against the torsion beam bracket, and a plurality of protrusions are uniformly distributed on each mounting surface.

Optionally, the rubber piece wraps at least one end of the outer tube, and forms an abutting surface for abutting against the torsion beam support, and a plurality of convex balls are uniformly arranged on the abutting surface.

In addition, to achieve the above object, the present invention also provides a rear torsion beam including:

the bushing comprises an air gap structure and a hollow structure, the air gap structure comprises a plurality of air gap channels, each air gap channel penetrates through the rubber part along the axial direction of the outer pipe, the hollow structure comprises a plurality of hollow holes, and each hollow hole penetrates through the rubber part along the axial direction of the outer pipe;

the bushing is mounted on the torsion beam support.

Optionally, the bushing is obliquely disposed on the torsion beam bracket.

In the technical scheme provided by the invention, each air gap channel and each hollow hole penetrate through the rubber piece along the axial direction of the outer pipe. The buffer function is achieved through the air gap channel, the torsional friction abnormal sound of the bushing is avoided, the comfort and the durability are improved, the radial rigidity of the bushing can be adjusted through the hollow structure, meanwhile, the stress concentration can also be avoided, and the bushing is prevented from being torn in the torsional process.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a front view of one embodiment of a bushing provided in accordance with the present invention;

FIG. 2 is a cross-sectional view of the bushing of FIG. 1;

FIG. 3 is a top view of the bushing of FIG. 1;

FIG. 4 is a lower view of the bushing of FIG. 1;

fig. 5 is a front view of an embodiment of the rear torsion beam provided by the present invention.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Bushing	106	First arc segment
101	Outer tube	107	Second arc segment
				102	Inner pipe	108	Projection
103	Rubber part	109	Convex ball
				104	Air gap structure	110	Rear torsion beam
105	Hollow structure	111	Torsion beam support

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indication is involved in the embodiment of the present invention, the directional indication is only used for explaining the relative positional relationship, the motion situation, and the like between the components in a certain posture, and if the certain posture is changed, the directional indication is changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

In an automobile suspension system, a rubber bushing is used as a hinge point of each part, plays roles in guiding movement, bearing load, damping vibration and reducing noise, and is the key of the whole automobile comfort and the stable operation design. Torsion beam bushings are currently mainly divided into common rubber bushings and hydraulic bushings, and the rubber bushings are most commonly used in vehicle models. At present, the overall rigidity of the rear torsion beam rubber bushing can only be adjusted through a sizing material formula. The axial rigidity of the bushing is low, so that lateral force cannot be rapidly transmitted to a vehicle body, the responsiveness of the vehicle is seriously affected, and the bushing is arranged at an angle with the Y direction of the whole vehicle.

In view of the above, the main object of the present invention is to provide a bushing and a rear torsion beam, which aim to solve the technical problems in the prior art that the lateral force cannot be quickly transmitted to the vehicle body due to abnormal noise of the bushing, and the vehicle responsiveness is poor. The present invention provides a bushing that can be used in any rear torsion beam that can be used in machinery such as automobiles, trucks, etc. with a suspension system. However, for the sake of understanding, in the following embodiments, the bushing is applied to a rear torsion beam of an automobile as an example.

Referring to fig. 1 to 4, the bushing 100 provided in this embodiment includes an inner tube 102 and an outer tube 101 sleeved in sequence from inside to outside, the inner tube 102 and the outer tube 101 are sleeved by a rubber member 103 through vulcanization, the rubber member 103 is disposed between the inner tube 102 and the outer tube 101, and the rubber member 103 extends to both ends of the outer tube 101 to wrap the outer tube.

Meanwhile, the defects that lateral force cannot be rapidly transmitted to a vehicle body, the vehicle responsiveness is poor and the like due to the fact that abnormal sound, poor durability and small axial rigidity of the bushing commonly exist in the prior art are overcome. The bushing 100 of the present embodiment further includes an air gap structure 104 and a hollow structure 105. The air gap structure 104 includes a plurality of air gap channels, and each air gap channel is arranged on the rubber member 103 along the axial direction of the outer tube 101. The hollow structure 105 includes a plurality of hollow holes, and each of the hollow holes is formed in the rubber member 103 along the axial direction of the outer tube 101. The buffer function is achieved through the air gap channel, the torsional friction abnormal sound of the bushing is avoided, the comfort and the durability are improved, the radial rigidity of the bushing can be adjusted through the hollow structure, meanwhile, the stress concentration can also be avoided, and the bushing is prevented from being torn in the torsional process.

Further, in this embodiment, the air gap channels and the hollow holes are alternately arranged along the circumferential direction of the rubber member 103. Air gap channel and fretwork hole all need the even circumference of following rubber part 103 to lay for air gap channel can cushion the extrusion deformation of bush in all directions, and then avoids bush 100 torsional friction abnormal sound, improves travelling comfort and durability. The radial rigidity of bush can be adjusted to hollow out construction, also can avoid stress concentration simultaneously, tears when avoiding twisting.

Further, in this embodiment, the air gap channel includes a first arc segment 106 and two second arc segments 107, the two second arc segments 107 are respectively disposed at two sides of the first arc segment 106, the first arc segment 106 is bent inward, and the two second arc segments 107 are bent outward. It should be noted that the inward bending means bending toward the axis of the rubber member, and the outward bending means bending away from the axis of the rubber member 103. The first arc segment 106 and the second arc segment 107 are bent in opposite directions.

Further, in this embodiment, the air gap structure 104 further includes a plurality of ribs, and the plurality of ribs are located in the air gap channel and spaced apart from the sidewall of the first arc section 106 near the outer tube 102. The convex strips are used for preventing the air gap channel from being uniformly contacted with the opposite side walls in the extrusion deformation process, and abnormal sound caused by friction is avoided.

Further, in this embodiment, the opening of the hollow hole is connected with the rubber member 103 through an arc surface.

Further, in this embodiment, the length of the inner tube 101 is greater than the length 102 of the outer tube, both ends of the inner tube 101 protrude outwards from the outer tube 102 to form two mounting surfaces for abutting against the torsion beam bracket 111, and a plurality of protrusions are uniformly distributed on each mounting surface. The mounting surfaces at the two ends are distributed with a plurality of protrusions 108, so that the friction between the protrusions and the torsion beam bracket 111 is increased to improve the clamping force, and the bushing 100 is prevented from moving and abnormal sound.

Further, in this embodiment, the rubber member 103 wraps at least one end of the outer tube 102, and forms an abutting surface for abutting against the torsion beam bracket 111, and the abutting surface is uniformly provided with a plurality of convex balls 109. So that the rubber member 103 and the torsion beam support 111 are in uniform contact, and abnormal friction sound is avoided.

In addition, referring to fig. 5, the present invention further provides a rear torsion beam 110, wherein the rear torsion beam 110 includes the bushing 100 and a torsion beam bracket 111, and the bushing 100 is mounted on the torsion beam bracket 111.

It should be noted that, the detailed structure of the bushing 100 in the rear torsion beam 110 can refer to the above-mentioned embodiment of the bushing 100, and is not described herein again; since the bushing 100 is used in the rear torsion beam 110 of the present invention, the embodiment of the rear torsion beam 110 of the present invention includes all technical solutions of all embodiments of the bushing 100, and the achieved technical effects are also completely the same, and are not described herein again.

Further, in the present embodiment, the bushing 100 is obliquely disposed on the torsion beam bracket 111. The torsion beam support 111 is arranged on the whole vehicle in parallel, and the bushing 100 is obliquely arranged on the torsion beam support 111, that is, the bushing 100 is arranged at an angle with the side direction of the whole vehicle. The angle of inclination is in the range of 20-30 deg., with a preferred embodiment being 26.5 deg.. Therefore, the lateral rigidity can be increased by maximally utilizing the radial rigidity of the bushing, and the lateral response speed of the whole vehicle is improved.

The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents made by the contents of the present specification and drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.