Automobile bushing

Abstract

The utility model relates to a kind of automobile bushings, involve automobile parts technical field, including outer tube, outer tube inside symmetry is provided main direction part, main direction part one end is connected with outer tube, the end of main direction part away from outer tube is connected inner tube, symmetry is equipped with auxiliary direction part between main direction part, auxiliary direction part is connected with outer tube inside;The diameter of inner tube middle part is greater than the diameter of both ends.The utility model relates to a kind of automobile bushings, when adopting heat piling technology, let the middle part of inner tube be puffed, solve the rigidity problem of automobile bushing, in order to reach the stability of bushing rigidity, inner tube is designed with clamping groove structure, prevent bushing rotation.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, and in particular to an automotive bushing. Background Technology

[0002] Bushings play a crucial role in automotive chassis damping systems, significantly impacting overall vehicle comfort, handling, noise reduction, and component lifespan.

[0003] When a wheel encounters minor unevenness in the road surface, the resulting impact and vibration are first transmitted to the suspension links or stabilizer bar. Rubber bushings, through their elastic deformation, effectively absorb and filter these high-frequency, low-amplitude vibrations, preventing them from being directly transmitted to the vehicle body and passenger compartment. This significantly improves ride smoothness and passenger comfort. At the same time, the bushings also isolate noise generated by the metal-to-metal contact or friction of the suspension components. The suspension system needs to perform complex movements during vehicle operation.

[0004] Bushings, acting as flexible connectors, allow these components to rotate and make slight displacements within their design limits. This flexible connection is fundamental to the dynamic adjustment of wheel alignment parameters and is crucial for handling stability. The molecular friction within the rubber or polyurethane bushings, as well as the fluid flow resistance in the hydraulic bushings, dissipates some of the transmitted energy, providing additional damping. This helps suppress residual vibrations in the suspension components after impacts, further improving comfort.

[0005] The bushing's structural design limits the maximum displacement of suspension components relative to the vehicle body, preventing hard collisions in extreme conditions and protecting both the suspension components and the vehicle body. It isolates direct contact between metal parts, reducing wear and noise, and extending the service life of the suspension components.

[0006] Currently, as people's requirements for car ride comfort are increasing, especially with the widespread adoption of new energy vehicles, the requirements for bushings are also increasing. However, the stiffness parameters of traditional bushings cannot meet the requirements of some new energy vehicles. Utility Model Content

[0007] To address the issue that the stiffness parameters of traditional bushings cannot meet the requirements of some new energy vehicles, a new type of automotive bushing is proposed.

[0008] The technical solution of this utility model is as follows: an automotive bushing includes an outer tube, with main directional portions symmetrically arranged on the inner side of the outer tube. One end of the main directional portion is connected to the outer tube, and the end of the main directional portion away from the outer tube is connected to an inner tube. Secondary directional portions are symmetrically arranged between the main directional portions, and the secondary portions are connected to the inner side of the outer tube. The diameter of the middle part of the inner tube is larger than the diameter of both ends.

[0009] Preferably, the edges at both ends of the inner tube are provided with slots.

[0010] Preferably, the secondary directional portion is hollow between the primary directional portion and the inner tube.

[0011] The beneficial effects of this utility model are as follows: This utility model is an automotive bushing. In the design of the inner tube, the hot forging technology is used to make the middle of the inner tube bulge, which solves the problem of the rigidity of the automotive bushing. In order to achieve the stability of the bushing rigidity, the inner tube is designed with a groove structure to prevent the bushing from rotating. Attached Figure Description

[0012] Figure 1 This is a perspective view of the automotive bushing of this utility model;

[0013] Figure 2 This is an exploded perspective view of the automotive bushing of this utility model;

[0014] Figure 3 This is a cross-sectional view of the automotive bushing of this utility model.

[0015] The component names corresponding to the various reference numerals in the diagram are as follows:

[0016] 1. Outer tube; 2. Inner tube; 21. Slot; 3. Main directional part; 4. Secondary directional part; Detailed Implementation

[0017] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. This embodiment is based on the technical solution of the present invention and provides detailed implementation methods and specific operating procedures; however, the scope of protection of the present invention is not limited to the following embodiments.

[0018] refer to Figure 1 , 2 As shown in Figure 3, this application discloses an automotive bushing, including an outer tube 1. A main direction section 3 is symmetrically arranged on the inner side of the outer tube 1. The main direction section 3 is made of rubber with a Shore hardness of 82. The structure is thickened and reinforced to achieve a stiffness of 38,000 N. After laboratory fatigue testing, the main direction rubber showed no cracking or delamination after 500,000 cycles of loading. One end of the main direction section 3 is vulcanized and connected to the outer tube 1, and the end of the main direction section 3 away from the outer tube 1 is vulcanized and connected to the inner tube 2. A secondary direction section 4 is symmetrically arranged between the main direction sections 3. The secondary direction section 4 is also made of rubber with a Shore hardness of 45. The structure commonly uses a rubber gap technique to reduce the stiffness of the secondary direction rubber, achieving a stiffness of 14,000 N. Furthermore, after laboratory fatigue testing, the secondary rubber showed no cracking or delamination after 500,000 impact cycles. The secondary part 4 is vulcanized and connected to the inner side of the outer tube 1. The diameter of the middle part of the inner tube 2 is larger than the diameter of both ends. The inner tube 2 was designed with hot forging technology to make the middle part of the inner tube bulge, avoiding the problem that the stiffness requirement of 38,000N could not be met when using Shore 82 rubber.

[0019] The inner tube 2 has grooves 21 at both ends. When loading, the assembly pin passes through the grooves 21 of the inner tube of the bushing to ensure that the bushing is fixed in one direction and to make the main and auxiliary functions clear.

[0020] The secondary directional part 4 is hollow between the main directional part 3 and the inner tube 2 to ensure that the rigidity requirements are met.

[0021] The specific working principle is as follows:

[0022] To achieve a primary stiffness of 38,000 N, the width and thickness of the rubber in the primary direction were increased, and the rubber hardness was increased to Shore 82. An internal tube bulging process was also adopted. To achieve a secondary stiffness of 14,000 N, the rubber hardness was reduced to Shore 45, and a structural hollowing process was also adopted. The stiffness difference between the two directions is 24,000 N to meet customer requirements.

[0023] The beneficial effects are:

[0024] This utility model relates to an automotive bushing. The inner tube 2 is designed with a hot-bent technique, which causes the middle part of the inner tube 2 to bulge, thus solving the problem of the rigidity of the automotive bushing. In order to achieve the stability of the bushing rigidity, the inner tube 2 is designed with a groove structure to prevent the bushing from rotating.

[0025] It should be noted that the terms "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. The terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. "A plurality of" means two or more. "Installed," "connected," and "joined" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection.

[0026] The above description is merely a preferred embodiment of this utility model and is not intended to limit this utility model in any form or substance. It should be noted that those skilled in the art can make various improvements and additions without departing from this utility model, and these improvements and additions should also be considered within the protection scope of this utility model. Any modifications, alterations, and equivalent changes made by those skilled in the art without departing from the spirit and scope of this utility model using the disclosed technical content are equivalent embodiments of this utility model. Furthermore, any modifications, alterations, and evolutions made to the above embodiments based on the essential technology of this utility model are still within the scope of the technical solution of this utility model.

Claims

1. An automotive bushing, characterized in that, It includes an outer tube (1), a main direction part (3) symmetrically arranged inside the outer tube (1), one end of the main direction part (3) is connected to the outer tube (1), the end of the main direction part (3) away from the outer tube (1) is connected to the inner tube (2), and a secondary direction part (4) symmetrically arranged between the main direction parts (3) is connected to the inner side of the outer tube (1); the diameter of the middle part of the inner tube (2) is larger than the diameter of both ends.

2. The automotive bushing according to claim 1, characterized in that, The inner tube (2) has grooves (21) at both ends.

3. The automotive bushing according to claim 1, characterized in that, The secondary directional part (4) is hollow between the main directional part (3) and the inner tube (2).

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