Wear-resistant forged aluminum bracket assembly

Abstract

This utility model discloses a wear-resistant forged aluminum bracket assembly, comprising a herringbone-shaped aluminum alloy forged body, a ball head assembly, a middle bushing, a rear bushing, and a central bushing. The rear bushing includes an inner tube, an outer tube, a rubber body, and a skeleton. The outer contour of the inner tube is polygonal, and the inner tube is eccentrically positioned relative to the outer tube, with their central axes defining a principal plane of symmetry. Two deformation grooves are recessed on both ends of the rubber body, each groove's contour shape being symmetrical about the principal plane of symmetry. A retainer with two protrusions is fitted onto both ends of the inner tube, the protrusions correspondingly embedded in the deformation grooves with a gap between them. A retainer cap is press-fitted into the inner hole at both ends of the inner tube. At least two liquid cavities are formed by an inwardly recessed section on the outer peripheral wall of the rubber body, enclosing the outer tube. These liquid cavities are connected by flow channels on the outer peripheral wall of the rubber body, and are filled with damping fluid. This structure offers good shock absorption and torsional resistance, and has a long service life.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, and in particular to a wear-resistant forged aluminum bracket assembly. Background Technology

[0002] The chassis bracket assembly in an automotive chassis system is a key structural component connecting critical components such as the suspension and stabilizer bar to the vehicle body. Its performance directly affects the vehicle's handling stability, ride comfort, and NVH (noise, vibration, and harshness) performance. Traditional chassis bracket assemblies mostly use welded steel or cast iron structures, which suffer from problems such as heavy weight, susceptibility to corrosion, and limited structural layout. With the increasing demand for lightweight and high-performance vehicles, aluminum alloy forged chassis brackets have gradually been used. However, in key bushing areas, they still generally have shortcomings such as insufficient torsional resistance, easy rubber fatigue and aging, and limited damping characteristics. Especially when dealing with complex road conditions and high-frequency vibrations, conventional bushings cannot balance support stiffness and shock absorption, easily leading to premature wear or abnormal noises, affecting the overall vehicle quality and service life. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the above-mentioned problems and provide a wear-resistant forged aluminum bracket assembly with good shock absorption and torsional resistance, and long service life.

[0004] The technical solution of this utility model is: The wear-resistant forged aluminum bracket assembly of this utility model includes a herringbone-shaped body forged from aluminum alloy. A ball joint assembly is installed at the upper end of the body, and a middle bushing and a rear bushing are respectively installed at the other two ends. A center bushing is installed on the body below the ball joint assembly. Its features are as follows: The rear bushing includes an inner tube, an outer tube, a rubber body located between the inner tube and the outer tube, and a skeleton embedded in the rubber body; The outer contour of the inner tube is polygonal, and the inner tube is eccentrically positioned relative to the outer tube. The central axes of the inner and outer tubes together define a principal plane of symmetry. Two deformation grooves are recessed on both ends of the rubber body, and the outline shape of each deformation groove is symmetrical about the principal plane of symmetry. A retaining sleeve is fitted on the outer side of both ends of the inner tube, and the retaining sleeve has two protrusions. The protrusions are embedded into the deformation grooves one by one, and a gap is reserved between the protrusions and the deformation grooves. A retaining cap is press-fitted into the inner hole at both ends of the inner tube to stop the retaining sleeve. The outer peripheral wall of the rubber body is recessed inward and encloses the outer tube to form at least two liquid cavities. Each liquid cavity is connected to the other through a flow channel recessed on the outer peripheral wall of the rubber body. The liquid cavities and flow channels are filled with damping fluid.

[0005] In this structure, the inner tube of the rear bushing adopts a polygonal outer contour, which effectively prevents relative rotation between the inner tube and the rubber body, improves the stability and durability of the bushing when subjected to torsional torque, and optimizes the stress on the rubber by combining the protrusions on the bushing with the symmetrical deformation groove design, avoiding stress concentration and fatigue damage. The inner tube is eccentrically set relative to the outer tube, and the center can be adjusted as needed, so that the stiffness of the bushing in different directions can be independently designed and precisely controlled, optimizing the damping effect, and effectively attenuating mid-to-high frequency vibrations by combining the efficient liquid resistance damping effect.

[0006] Furthermore, in the wear-resistant forged aluminum bracket assembly described in this utility model, a connecting screw is coaxially press-fitted inside the central bushing, and the connecting screw extends outward to form a hexagonal end. This structure, by introducing an extended connecting screw, allows the connection point between the bracket and the vehicle body component to be moved to a wider and more flexible position, breaking through the limitations on the size and shape of the installed component, making it more convenient to use and more adaptable.

[0007] Furthermore, in the wear-resistant forged aluminum bracket assembly of this utility model, a protective sleeve is fitted on the connecting screw, and the protective sleeve covers at least the hexagonal end, thereby effectively isolating corrosive media such as moisture and salt, preventing the hexagonal end from rusting, and improving product reliability and maintainability.

[0008] Furthermore, in the wear-resistant forged aluminum bracket assembly described in this utility model, the retaining sleeve is made of nylon 66, which has self-lubricating and wear-resistant properties, and can reduce wear when the protrusion contacts and rubs against the deformation groove.

[0009] Furthermore, in the wear-resistant forged aluminum bracket assembly of this utility model, the outer contour shape of the inner tube is symmetrical about the main symmetry plane, ensuring that the stiffness, deformation characteristics and damping performance on both sides are symmetrical and consistent, thereby improving driving stability and ride comfort.

[0010] Furthermore, in the wear-resistant forged aluminum bracket assembly of this utility model, the end face of the cover facing outward along the circumference is provided with multiple end teeth.

[0011] The beneficial effects of this utility model are: 1. This utility model optimizes the stiffness characteristics of the bushing by using the eccentric design of the inner tube of the rear bushing, achieving better shock absorption in the main vibration direction. Combined with the hydraulic damping system consisting of a liquid chamber, flow channel and damping fluid, the bushing has the intelligent effect of automatically adjusting the damping force according to the frequency and amplitude of road vibration, which together significantly improves the ride comfort of the vehicle.

[0012] 2. This utility model adopts a polygonal inner tube design, combined with the cooperation of the protruding part of the retaining sleeve and the deformation groove, which solves the anti-torsion problem of the interface between the rubber body and the inner tube, and between the inner tube and the retaining sleeve, avoids excessive torsion of the rubber body and tearing, has better connection strength and anti-torsion performance, and the symmetrical design of the deformation groove ensures uniform deformation of the rubber body, better stress distribution, avoids stress concentration, and extends the durability of the product.

[0013] 3. This utility model, by designing connecting screws extending inside and outside the central bushing, transfers the connection point from the restricted space directly inside the central bushing to the external open area, greatly enhancing the compatibility with large or irregularly shaped parts and facilitating the installation of larger or difficult-to-install parts. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the structure of the rear bushing described in this utility model.

[0016] Figure 3 This is a three-dimensional structural diagram of the rear bushing without the outer tube installed.

[0017] Figure 4 for Figure 3 A cross-sectional view.

[0018] Figure 5 This is a schematic diagram of the structure of the retaining sleeve. Detailed Implementation

[0019] The present invention will now be further described with reference to the accompanying drawings: Reference Figures 1-4 As shown, the wear-resistant forged aluminum bracket assembly described in this embodiment includes a body 1 forged from aluminum alloy in a herringbone shape. A ball head assembly is installed on the upper end of the body 1, and a middle bushing 3 and a rear bushing 2 are installed on the other two ends respectively. A center bushing 4 is installed on the body 1 below the ball head assembly.

[0020] Specifically, the rear bushing 2 includes an inner tube 202, an outer tube 201, a rubber body 203 located between the inner tube 202 and the outer tube 201, and a skeleton 204 embedded in the rubber body 203. The outer contour of the inner tube 202 is polygonal, and the inner tube 202 is eccentrically positioned relative to the outer tube 201. The central axes of the inner tube 202 and the outer tube 201 together define a principal plane of symmetry. Two deformation grooves 205 are recessed on both ends of the rubber body 203. The contour shape of each deformation groove 205 is symmetrical about the principal plane of symmetry. The outer contour shape of the inner tube 202 is symmetrical about the principal plane of symmetry, thereby ensuring that the bushing deforms uniformly on both sides when subjected to force, thus improving the system balance.

[0021] Both ends of the inner tube 202 are fitted with retaining sleeves 206. (Refer to...) Figure 5 The retaining sleeve 206 has two protrusions 206a, which are embedded one-to-one into the deformation groove 205, with a gap reserved between the protrusions 206a and the deformation groove 205. This gap can prevent hard contact within the normal deformation range, and play a limiting protection role under extreme working conditions. The retaining sleeve 206 is made of nylon 66, which has good wear resistance and self-lubricating properties, effectively reducing frictional loss between it and the deformation groove 205. The inner holes at both ends of the inner tube 202 are press-fitted with retaining caps 207 for stopping the retaining sleeve 206; the axially outward end face of the retaining cap 207 is provided with multiple end teeth along the circumference (not shown in the figure).

[0022] The outer peripheral wall of the rubber body 203 is recessed inward and encloses the outer tube 201 to form at least two liquid cavities 208. These cavities 208 are connected by flow channels 209 recessed in the outer peripheral wall of the rubber body 203. The liquid cavities 208 and flow channels 209 are filled with damping fluid. This structure allows the bushing to effectively absorb mid-to-high frequency vibrations during vibration through the flow and throttling of the damping fluid between the liquid cavities 208.

[0023] Reference Figure 1 A connecting screw 5 is coaxially press-fitted within the central bushing 4, and the connecting screw 5 extends outward to form a hexagonal end 501. A protective sleeve 6 is fitted onto the connecting screw 5, at least covering the hexagonal end 501. Traditional brackets require direct installation of components within the central bushing hole, and their installation space and method are limited by the environment surrounding the bracket body. This extended screw structure breaks through the space limitations of traditional direct bushing connection, providing convenience for the installation of larger or specially shaped components, enhancing the assembly's adaptability, and simultaneously preventing corrosion of the connection points through the protective sleeve 6, ensuring long-term reliability during disassembly and assembly.

[0024] The specific embodiments described herein are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model are still covered by the claims of this utility model.

Claims

1. A wear-resistant forged aluminum bracket assembly, comprising a herringbone-shaped body forged from aluminum alloy, a ball joint assembly mounted on the upper end of the body, and a middle bushing and a rear bushing mounted on the other two ends respectively, and a center bushing mounted on the body below the ball joint assembly, characterized in that: The rear bushing includes an inner tube, an outer tube, a rubber body located between the inner tube and the outer tube, and a skeleton embedded in the rubber body; The outer contour of the inner tube is polygonal, and the inner tube is eccentrically positioned relative to the outer tube. The central axes of the inner and outer tubes together define a principal plane of symmetry. Two deformation grooves are recessed on both ends of the rubber body, and the outline shape of each deformation groove is symmetrical about the principal plane of symmetry. A retaining sleeve is fitted on the outer side of both ends of the inner tube, and the retaining sleeve has two protrusions. The protrusions are embedded into the deformation grooves one by one, and a gap is reserved between the protrusions and the deformation grooves. A retaining cap is press-fitted into the inner hole at both ends of the inner tube to stop the retaining sleeve. The outer peripheral wall of the rubber body is recessed inward and encloses the outer tube to form at least two liquid cavities. Each liquid cavity is connected to the other through a flow channel recessed on the outer peripheral wall of the rubber body. The liquid cavities and flow channels are filled with damping fluid.

2. The wear-resistant, wrought aluminum cradle assembly of claim 1, wherein: A connecting screw is coaxially press-fitted inside the central bushing, and the connecting screw extends outward to form a hexagonal end.

3. The wear-resistant, wrought aluminum cradle assembly of claim 2, wherein: A protective sleeve is fitted onto the connecting screw, and the protective sleeve covers at least the hexagonal end.

4. The wear-resistant forged aluminum bracket assembly according to claim 1, characterized in that: The retainer is made of nylon 66.

5. The wear-resistant forged aluminum bracket assembly according to claim 1, characterized in that: The outer contour shape of the inner tube is symmetrical about the principal plane of symmetry.

6. The wear-resistant forged aluminum bracket assembly according to claim 1, characterized in that: The end face of the cover facing outward along the circumference has multiple end teeth.

Images