Vehicle Wheel Disk with Crest Wall Protrusion for Rigidity
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Solution Overview
Problem
Existing vehicle wheel disks lack rigidity and durability, particularly when varying spoke and hub bolt hole configurations are required, and often complicate access to hub nuts.
Innovation Solution
A vehicle wheel disk design featuring a hub coupling portion with radially extending spoke portions, a vent window, and a connecting wall with a radially inward protrusion, providing enhanced rigidity and durability while allowing easy access to hub nuts through a specific configuration of spoke bottom walls, side portions, and a crest wall protrusion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a conventional wheel disk design is used, then the structure is simple, but the rigidity and durability are insufficient
Solution Approach 1:
The wheel disk is divided into multiple functional segments including a hub coupling portion, multiple spoke portions extending radially outward, a disk radially outer portion, and a connecting wall with vent window surrounding portion. This segmentation allows each part to be optimized for its specific function while contributing to overall structural strength and rigidity.
Solution Approach 2:
The connecting wall includes a vent window surrounding curved portion that is curved axially inwardly, and the crest wall portion has a convex arc shape with a single radius. These curved geometries distribute stress more effectively compared to straight lines, enhancing the rigidity and durability of the wheel disk structure.
2Strength
If the wheel disk structure is modified to improve rigidity, then strength increases, but access to hub nuts becomes difficult
Solution Approach 1:
The hub coupling portion features a specifically designed configuration with hub bolt holes positioned to allow easy access for nut installation and removal. This local optimization ensures that while the overall structure gains strength through additional walls and curves, the hub nut access area maintains operational ease through appropriate spacing and positioning.
3Adaptability or versatility
If various spoke and hub bolt hole configurations are required, then versatility increases, but structural consistency decreases
Solution Approach 1:
The connecting wall design with the vent window surrounding portion and crest wall portion serves multiple functions: it provides structural reinforcement, creates aesthetic vent window patterns, and accommodates various spoke configurations. The hub coupling portion is designed to accept different numbers and arrangements of hub bolt holes while maintaining structural integrity through its standardized geometric framework.
Data Source
AI summary
A vehicle wheel disk includes a plurality of spoke portions extending radially outwardly from a hub coupling portion with vent windows between the spokes. Each spoke includes a bottom wall and axially extending side walls, with a radially outer disk portion connecting the radially outer ends of the spokes. A connecting wall connects a pair of spoke side portions on opposite sides of the vent window in the circumferential direction of the wheel. The spoke bottom wall includes an axially extending inclined portion and a radially extending main portion. A spoke strengthening wall extends circumferentially from the axial end of the spoke side wall. The connecting wall includes a vent window surrounding portion, a vent window surrounding curved portion, and a crest wall portion of a radially inwardly protruding protrusion.