Vehicle Wheel Disk Spoke Curvature for Radial Rigidity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional vehicle wheel disks lack sufficient rigidity and strength, which can lead to reduced bending strength and rigidity in the radial direction, affecting their performance and durability.
Innovation Solution
The vehicle wheel disk design includes a hub coupling portion, a rising wall, a disk flange, and a plurality of spokes with specific geometric features such as spoke crests, radially outer walls, and circumferential side walls, along with a vent window configuration that increases bending strength and rigidity by forming a box-like structure and optimizing the curvature and area of these components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional wheel disk design is used, then manufacturing is simpler, but bending strength and rigidity in radial direction are insufficient
Solution Approach 1:
The spoke crest is designed with curved portions having different curvatures in the radial direction, creating a box-like three-dimensional structure. This curvature configuration increases the moment of inertia and enhances bending strength and rigidity without requiring additional material thickness
Solution Approach 2:
The invention transitions from a conventional flat spoke structure to a three-dimensional box-like structure by adding curvature in the radial direction. This dimensional change creates additional structural depth that significantly improves bending resistance while maintaining the same material thickness
2Strength
If material thickness is increased to improve strength, then bending strength increases, but weight and material cost increase
Solution Approach 1:
By forming curved portions in the spoke crest with different curvatures, the invention creates a box-like structure that utilizes geometric configuration rather than material quantity to achieve strength. The curved geometry distributes stress more effectively, providing enhanced bending strength without increasing material thickness
3Stability of the object's composition
If rising wall ribs are added to improve strength, then structural rigidity increases, but interference with hub bolt holes occurs
Solution Approach 1:
The invention applies local quality by positioning the curved portions specifically in the spoke crest region rather than adding ribs throughout the entire rising wall. This localized geometric modification provides the necessary structural reinforcement without creating interference with hub bolt holes in critical areas
Data Source
AI summary
A spoke 15 has a spoke crest 15a, a spoke radially outer wall 15b and a pair of spoke circumferential side walls 15c. In a cross section of the spoke 15 along a radial direction of a disk, a crest outer curved portion 15a2 of the spoke crest 15a is curved at a larger curvature than curvatures of a crest inner curved portion 15a1 of the spoke crest 15, a crest main portion 15a4 of the crest and the spoke radially outer wall 15b. Thus, compared with a conventional one, a configuration of the spoke 15 becomes like a box. As a result, a bending strength and a bending rigidity of the spoke 15 in the radial direction of the disk can be improved.