Hollow Bracket with Reinforcing Rib for Suspension Rigidity
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Solution Overview
Problem
Existing suspension devices face challenges in achieving both high rigidity and weight reduction, particularly at the joint portion between the side member and suspension cross member, which affects vehicle performance and steering.
Innovation Solution
The suspension device incorporates a hollow bracket with a reinforcing rib, where the leaf spring's intermediate part is accommodated within the main cross member, and a shock absorber is positioned between the lower arm and side member, with the upper arm and shock absorber being disconnected from the hollow bracket, allowing for independent attachment of the upper and lower brackets for improved design freedom and rigidity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a solid bracket is used to connect the suspension cross member and side member, then rigidity at the joint portion is improved, but weight increases
Solution Approach 1:
The bracket is designed as a hollow structure with internal cavities and reinforcing ribs, creating a porous-like configuration that reduces material usage and weight while maintaining structural rigidity through the strategic placement of walls and reinforcement elements
Solution Approach 2:
The bracket combines hollow cylindrical sections with integrated reinforcing ribs to create a composite structural form that achieves high rigidity-to-weight ratio, effectively combining the benefits of hollow structure (weight reduction) with rib reinforcement (rigidity enhancement)
2Weight of moving object
If the bracket structure is simplified for weight reduction, then weight decreases, but rigidity at the joint portion deteriorates
Solution Approach 1:
The bracket features localized reinforcing ribs positioned at specific locations where structural strength is most needed, rather than uniformly thickening the entire structure. This allows weight reduction in non-critical areas while maintaining rigidity at critical joint portions
Solution Approach 2:
The bracket transitions from a simple solid or hollow form to a three-dimensional structure with internal reinforcing ribs and varied wall thicknesses, utilizing spatial dimensionality to optimize both weight and rigidity properties simultaneously
3Stability of the object's composition
If the upper arm and shock absorber are connected to the hollow bracket, then structural integration is improved, but design freedom and assembly ease deteriorate
Solution Approach 1:
The suspension system is divided into separate functional modules: the hollow bracket serves as one independent component, while the upper arm and shock absorber are separate components that connect to it. This segmentation provides design freedom for each component while maintaining structural integration through standardized connection interfaces
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 configuration achieves weight reduction while maintaining sufficient rigidity at the joint portion, enhancing vehicle performance by allowing for easier assembly and improved force transmission without increasing weight.
Implementation Method 1
the hollow bracket includes a bracket shock absorber positioned to face the lower arm
Data Source
AI summary
A suspension device according to the present disclosure which is equipped with an upper arm, a lower arm, and a leaf spring, wherein: the intermediate section of the leaf spring is housed inside a main cross member among the suspension cross members; the main cross member among the suspension cross members is connected to the side member via a hollow bracket; the hollow bracket has a bracket shock absorber positioned so as to face the lower arm; and the hollow bracket has a reinforcing part which faces the bracket shock absorber.