Vehicle Wheel Disk Spoke Reinforcement for Rigidity and Assembly
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Solution Overview
Problem
Conventional vehicle wheel disks with annular, circumferentially continuous and axially protruding protrusions restrict the placement and number of hub bolt holes and spoke portions, affecting their rigidity, durability, and assembly process.
Innovation Solution
A vehicle wheel disk design without such protrusions, featuring a hub coupling portion, inclined and spoke portions, and a radially outer disk portion, with spoke side and reinforcing walls that enhance rigidity and durability by distributing stress and allowing flexible placement of hub bolt holes and spoke portions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If annular, circumferentially continuous and axially protruding protrusions are added to the wheel disk, then the rigidity and strength of the wheel are improved, but the placement and number of hub bolt holes and spoke portions are restricted
Solution Approach 1:
The invention removes the conventional annular, circumferentially continuous and axially protruding protrusions from the wheel disk structure. By extracting these restrictive protrusions, the design gains freedom to optimally place hub bolt holes and spoke portions without being constrained by the protrusion geometry, while maintaining wheel strength through alternative structural features.
Solution Approach 2:
Instead of using a single continuous annular protrusion, the invention segments the reinforcement structure into discrete radial protrusions or ribs that extend from the central portion toward the outer periphery. This segmentation allows independent placement of hub bolt holes and spoke portions in optimal locations while the segmented protrusions provide localized strength where needed.
2Strength
If conventional protrusions are used to enhance wheel strength, then the wheel rigidity is improved, but the assembly process becomes more complex
Solution Approach 1:
By removing the complex continuous annular protrusion structure, the invention simplifies the wheel disk geometry to essential functional elements. This extraction of unnecessary structural complexity reduces manufacturing steps and assembly operations while retaining the core strength-enhancing functionality through simpler radial protrusions.
3Strength
If continuous annular protrusions are added to the wheel disk, then the wheel strength is improved, but stress concentrations are created that reduce fatigue resistance
Solution Approach 1:
The invention segments the continuous annular protrusion into discrete radial protrusions spaced around the wheel disk. This segmentation eliminates the continuous stress concentration path that would exist in a continuous annular structure, allowing stress to distribute more evenly through the wheel disk and improving fatigue resistance while maintaining overall strength.
Solution Approach 2:
Instead of providing continuous reinforcement around the entire wheel periphery, the invention applies radial protrusions only at specific locations where structural support is needed. This local quality approach provides strength enhancement precisely where required while avoiding the creation of continuous stress concentration paths that would harm fatigue performance.
Data Source
AI summary
The technology provides vehicle wheel disks where a spoke portion can have a spoke bottom wall and a spoke side portion. The spoke side portion can include a spoke side wall rising from the spoke bottom wall in an axial direction of the wheel and a spoke reinforcing wall connected from an axially end portion of the spoke side wall and curved from the axial direction of the wheel toward a circumferential direction of the wheel and extending in the circumferential direction of the wheel. A pair of spoke side portions can be located on opposite sides of the vent window in the circumferential direction of the wheel have radially inner end portions which are connected to each other via a connecting wall. The connecting wall can be flat or substantially flat in the circumferential direction of the wheel.