Wheel Carrier Structural Integration for Suspension Rigidity
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Solution Overview
Problem
Existing multi-link independent wheel suspension designs lack sufficient structural strength while requiring significant material and weight, particularly in the wheel carrier, which affects the overall rigidity and load-bearing capacity.
Innovation Solution
The integration of a front joint bolt receptacle via the trailing arm connection arm section creates a resilient connection for the front lower wishbone, forming a joint fork that supports the joint bolt on both sides and stiffens the trailing link connection arm, allowing for reduced material usage and a lower dead weight, with a double-bar tie rod connection and reinforced web structures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the wheel carrier is designed with traditional connection methods for the front lower wishbone, then the structural strength is sufficient, but the material requirements and dead weight increase
Solution Approach 1:
The front joint bolt receptacle is integrated into the trailing arm connection arm section, merging two previously separate components into one unified structure. This integration eliminates the need for additional separate connection elements, reducing material usage and dead weight while maintaining structural strength through the unified design of the connection arm section that inherently provides both trailing arm mounting and wishbone connection functionality
Solution Approach 2:
The trailing arm connection arm section is designed to serve multiple functions: it provides the mounting structure for the trailing arm, creates the joint fork for the front lower wishbone, and incorporates the front joint bolt receptacle. This multi-functional design eliminates the need for separate dedicated connection components, reducing overall material requirements while maintaining all necessary structural strengths
2Reliability
If the wheel carrier uses traditional wishbone connection design, then the connection is stable, but the structural rigidity and load-bearing capacity are insufficient
Solution Approach 1:
The joint fork structure is created by integrating the front joint bolt receptacle into the trailing arm connection arm section, adding a dimensional aspect to the connection design. The joint fork extends radially to support the wishbone on both sides of its link eye, creating a more robust three-dimensional connection structure that enhances load-bearing capacity while maintaining connection stability through bilateral support
3Strength
If more material is used to increase structural strength, then the load-bearing capacity improves, but the dead weight and manufacturing cost increase
Solution Approach 1:
By merging the front joint bolt receptacle into the trailing arm connection arm section, the design eliminates redundant material. The integrated structure uses the same material volume to achieve multiple connection functions simultaneously, reducing total material requirements while maintaining structural strength through efficient material distribution in the unified connection arm section
Solution Approach 2:
The trailing arm connection arm section is designed as a multi-functional component that provides trailing arm mounting, wishbone connection through the joint fork, and incorporates the front joint bolt receptacle. This universal design maximizes the utility of each unit of material, achieving high structural strength with minimized material quantity by making every portion of the connection arm section serve multiple structural purposes
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design achieves enhanced structural strength and rigidity with reduced material requirements, lower unsprung mass, and improved load distribution, offering increased safety and efficiency in absorbing forces, while allowing for cost-effective manufacturing with fewer parts.
Implementation Method 1
The wishbones are usually connected to the vehicle using a subframe... articulated, for example via elastically deformable bushings
Implementation Method 2
elastically deformable bushings
Data Source
AI summary
A wheel carrier for a multi-link individual wheel suspension system comprises a wheel bearing receiving section, a first transverse link connecting point for connecting an upper transverse link, a second transverse link connecting point for connecting a rear, lower transverse link, a third transverse link connecting point for connecting a front, lower transverse link, and a longitudinal link connecting point for connecting a longitudinal link arm. The longitudinal link connecting point is formed by a longitudinal link connecting arm section which penetrates from a region which, in the installed position of the wheel carrier, lies above the third transverse link connecting point to the associated longitudinal link arm. The wheel carrier is distinguished in that the third transverse link connecting point is formed by a rear joint bolt receptacle and a front joint bolt receptacle, and in that the front joint bolt receptacle is connected into the wheel carrier via the longitudinal link connecting arm section. This creates a wheel carrier which is distinguished by particularly high structural strength.