Comfortable bushing with large torsion angle

Abstract

The utility model relates to a large-torsion-angle comfortable lining which comprises an inner pipe and an outer ring arranged on the periphery of the inner pipe, and further comprises an inner ring, an inserting piece, a first rubber layer, a second rubber layer and a third rubber layer which are arranged between the inner pipe and the outer ring, the inner ring is arranged on the periphery of the inner pipe, the first rubber layer is arranged between the inner pipe and the inner ring, and the second rubber layer is arranged between the second rubber layer and the third rubber layer. The inserting piece is arranged on the periphery of the inner ring, the second rubber layer is arranged between the inner ring and the inserting piece, and the third rubber layer is arranged between the inserting piece and the outer ring. The inner ring is tubular, and the insertion sheets are arc-shaped sheets. Deformation of a large torsion angle can be achieved, the durability of the bushing is greatly improved, the rigidity of the bushing can be adjusted due to the receding structure, and the driving comfort is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, in particular to a large torsion angle comfort bushing. Background Art

[0002] Today, the automotive industry is flourishing with a multitude of contending forces. To build brand influence and establish a high-end image, each manufacturer meticulously refines the cockpit hardware of their vehicles, opting for front and rear multi-link suspensions and large air springs for a chassis that exudes luxury.

[0003] The distance an air spring raises or lowers a vehicle's center of gravity reflects a car manufacturer's chassis and suspension development capabilities and is a key factor in building a brand's reputation for technological prowess. However, the development and application of new technologies are inseparable from the specific, stable, and durable performance of rubber bushings under new operating conditions.

[0004] Vehicles equipped with air suspension use the inflation and deflation of airbags to raise and lower the center of gravity of the vehicle. This rise and fall of the vehicle causes the suspension arm to rise or lower at the hard point where it connects to the vehicle body or subframe. The rubber bushing at the connection point between the arm and the subframe is subject to torsional deformation. This means the bushing undergoes a certain degree of torsional deformation as the vehicle moves under load. Therefore, the torsional deformation achieved by the bushing has a significant impact on vehicle comfort. Summary of the Invention

[0005] The purpose of the utility model is to provide a large torsion angle comfort bushing which can realize deformation at a large torsion angle, thereby improving durability and driving comfort.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A large torsion angle comfort bushing comprises an inner tube, an outer ring arranged on the outer circumference of the inner tube, and an inner ring arranged between the inner tube and the outer ring, an insert, a first rubber layer, a second rubber layer and a third rubber layer. The inner ring is arranged on the outer circumference of the inner tube, the first rubber layer is arranged between the inner tube and the inner ring, the insert is arranged on the outer circumference of the inner ring, the second rubber layer is arranged between the inner ring and the insert, and the third rubber layer is arranged between the insert and the outer ring.

[0008] The inner ring is tubular, and the insert is arc-shaped.

[0009] The plurality of inserts are symmetrically arranged.

[0010] A first arcuate groove is formed on the end surface of the first rubber layer, a second arcuate groove is formed on the end surface of the second rubber layer, and a third arcuate groove is formed on the end surface of the third rubber layer.

[0011] The depth of the first arc-shaped groove, the depth of the second arc-shaped groove, and the depth of the third arc-shaped groove increase in sequence.

[0012] End surfaces of the first rubber layer, the inner ring, and the second rubber layer are provided with through openings.

[0013] The outer ring, the inner ring, the insert, the first rubber layer, the second rubber layer, and the third rubber layer have the same axial length, and the inner tube has a greater axial length than the outer ring.

[0014] The inner tube, the outer ring, the inner ring, the insert, the first rubber layer, the second rubber layer and the third rubber layer are coaxially arranged.

[0015] The first rubber layer, the second rubber layer, and the third rubber layer have the same thickness.

[0016] The inner tube, the outer ring, the inner ring and the insert are all made of aluminum.

[0017] Due to the application of the above technical solution, the utility model has the following advantages compared with the existing technology: the utility model can achieve deformation with a large torsional angle, greatly improving the durability of the bushing, and has an air-avoiding structure to achieve adjustable hardness and softness of the bushing stiffness, thereby improving driving comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Attachment Figure 1 It is a three-dimensional schematic diagram of the large torsion angle comfort bushing of the utility model.

[0019] Attachment Figure 2 It is a top view schematic diagram of the large torsion angle comfort bushing of the present invention.

[0020] Attachment Figure 3 This is a schematic AA cross-sectional view of the large torsion angle comfort bushing of the present invention.

[0021] In the above figures: 1, inner tube; 2, outer ring; 3, inner ring; 4, insert; 5, first rubber layer; 6, second rubber layer; 7, third rubber layer; 8, opening. DETAILED DESCRIPTION

[0022] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings.

[0023] Example 1: As shown in the attached Figure 1 To the attached Figure 3 As shown, a large torsion angle comfort bushing includes an inner tube 1, an outer ring 2, an inner ring 3, an insert 4, a first rubber layer 5, a second rubber layer 6 and a third rubber layer 7.

[0024] The inner tube 1 is an aluminum circular tube, manufactured using an extrusion process. The outer ring 2 is also an aluminum circular tube, manufactured using an extrusion process. The outer ring 2 is coaxially positioned around the outer circumference of the inner tube 1, forming an annular space between the outer ring 2 and the inner tube 1. The inner ring 3, insert 4, first rubber layer 5, second rubber layer 6, and third rubber layer 7 are all positioned within this annular space. Specifically, the inner ring 3 is positioned around the outer circumference of the inner tube 1. The first rubber layer 5 is positioned between the inner tube 1 and the inner ring 3, tightly connecting to both. The first rubber layer 5 is tubular. The inner ring 3 is an aluminum circular tube, manufactured using a roll-forming process. The aluminum insert 4, which is stamped, is positioned around the outer circumference of the inner ring 3. The second rubber layer 6 is positioned between the inner ring 3 and the insert 4, tightly connecting to both. The inserts 4 are curved sheets, with multiple sheets arranged symmetrically. In this embodiment, two inserts 4 are provided. The third rubber layer 7 is positioned between the insert 4 and the outer ring 2 and is tightly connected to both insert 4 and outer ring 2, respectively. The second and third rubber layers 6 and 7 are not tubular, but rather arc-shaped, forming an airtight structure. The first, second, and third rubber layers 5, 6, and 7 are of equal thickness and are made of natural rubber using a mixing process. A first arcuate groove is defined on the end surface of the first rubber layer 5, a second arcuate groove is defined on the end surface of the second rubber layer 6, and a third arcuate groove is defined on the end surface of the third rubber layer 7. The depths of the first, second, and third arcuate grooves increase in sequence. Furthermore, the end surfaces of the first rubber layer 5, inner ring 3, and second rubber layer 6 are provided with through-openings 8.

[0025] The outer ring 2, inner ring 3, insert 4, first rubber layer 5, second rubber layer 6, and third rubber layer 7 have equal axial lengths, while the inner tube 1 has a greater axial length than the outer ring 2. The coaxially arranged assembly of the outer ring 2, inner ring 3, insert 4, first rubber layer 5, second rubber layer 6, and third rubber layer 7 is located in the axial center of the inner tube 1.

[0026] The beneficial effect of the above-mentioned bushing is that the three-layer rubber structure can reduce the tensile deformation of the bushing rubber body caused by torsion, and thus has better durability after the bushing hard point stabilizes with the vehicle body posture. When the center of gravity of the vehicle body is increased, the bushing is generally required to have high stiffness to improve the rapid passability of the vehicle. When the center of gravity of the vehicle body is low, the bushing is required to have low stiffness to ensure comfort. The application of the non-circular structure insert 4 is perfectly suitable for the target working conditions. Therefore, vehicles using air suspension have very high requirements for the durability performance and driving comfort of the bushing, and the bushing structure of the utility model has specific reference significance for such development requirements.

[0027] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those familiar with the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications based on the spirit of the present invention are intended to be included in the scope of protection of the present invention.

Claims

1. A large torsion angle comfort bushing, comprising an inner tube and an outer ring disposed on the outer circumference of the inner tube, characterized in that: The large torsion angle comfort bushing also includes an inner ring, an insert, a first rubber layer, a second rubber layer and a third rubber layer arranged between the inner tube and the outer ring. The inner ring is arranged on the outer periphery of the inner tube, the first rubber layer is arranged between the inner tube and the inner ring, the insert is arranged on the outer periphery of the inner ring, the second rubber layer is arranged between the inner ring and the insert, and the third rubber layer is arranged between the insert and the outer ring.

2. The large torsion angle comfort bushing according to claim 1, characterized in that: The inner ring is tubular, and the insert is arc-shaped.

3. The large torsion angle comfort bushing according to claim 2, characterized in that: The plurality of inserts are symmetrically arranged.

4. The large torsion angle comfort bushing according to claim 1, characterized in that: A first arcuate groove is formed on the end surface of the first rubber layer, a second arcuate groove is formed on the end surface of the second rubber layer, and a third arcuate groove is formed on the end surface of the third rubber layer.

5. The large torsion angle comfort bushing according to claim 4, characterized in that: The depth of the first arc-shaped groove, the depth of the second arc-shaped groove, and the depth of the third arc-shaped groove increase in sequence.

6. The large torsion angle comfort bushing according to claim 1, characterized in that: End surfaces of the first rubber layer, the inner ring, and the second rubber layer are provided with through openings.

7. The large torsion angle comfort bushing according to claim 1, characterized in that: The outer ring, the inner ring, the insert, the first rubber layer, the second rubber layer, and the third rubber layer have the same axial length, and the inner tube has a greater axial length than the outer ring.

8. The large torsion angle comfort bushing according to claim 1, characterized in that: The inner tube, the outer ring, the inner ring, the insert, the first rubber layer, the second rubber layer and the third rubber layer are coaxially arranged.

9. The large torsion angle comfort bushing according to claim 1, characterized in that: The first rubber layer, the second rubber layer, and the third rubber layer have the same thickness.

10. The large torsion angle comfort bushing according to claim 1, characterized in that: The inner tube, the outer ring, the inner ring and the insert are all made of aluminum.

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