Vehicle Wheel Hub Relief Structure for Lighter Heavy-Duty Mounting
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Solution Overview
Problem
Vehicle wheels for medium-duty and heavy-duty vehicles face challenges in efficiently distributing loads and are often heavy, leading to increased fuel costs due to their sturdy but weighty design, which complicates installation, removal, and servicing.
Innovation Solution
A vehicle wheel design featuring a cylindrical first region and a radially inward second region with a hub surface that includes a relief portion to facilitate alignment and reduce engagement with the vehicle axle, allowing for easier installation and servicing while minimizing weight through strategic use of materials like metals or metal alloys.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If vehicle wheels are designed with sturdy construction to support heavy loads, then load-bearing capacity is improved, but weight increases leading to higher fuel costs
Solution Approach 1:
The wheel hub incorporates a relief portion that creates a localized variation in material distribution, concentrating mass where structural support is needed while reducing mass in areas where full material presence is not required. This local quality change allows the wheel to maintain load-bearing capacity while reducing overall weight.
Solution Approach 2:
The relief portion modifies the physical parameters of the hub surface by creating a controlled reduction in material thickness or density in specific regions. This parameter change optimizes the weight-strength ratio by removing unnecessary material while preserving the structural integrity required for heavy load support.
2Reliability
If vehicle wheels are designed with heavy construction for durability, then reliability is improved, but ease of operation deteriorates due to complicated installation and removal
Solution Approach 1:
The relief portion is pre-formed during manufacturing to create optimal engagement geometry with the axle hub. This preliminary action ensures that when installation occurs, the wheel naturally aligns and engages with the axle in a controlled manner, simplifying the installation process while maintaining durable connections through the precisely formed engagement surfaces.
3Strength
If vehicle wheels use extensive material for load distribution, then load distribution efficiency is improved, but weight increases
Solution Approach 1:
The relief portion creates a localized modification in the hub structure that optimizes material placement. By varying the material distribution locally rather than uniformly throughout the entire wheel, the design achieves efficient load distribution through strategically positioned material while minimizing unnecessary mass in regions where full material presence does not contribute to load-bearing functionality.
Data Source
AI summary
Vehicle wheels, methods of making vehicle wheels, and dual wheel assemblies are provided. The vehicle wheel includes a generally cylindrical first region and a second region extending radially inwardly from the first region. The second region includes a first surface, a second surface, an opening, and a hub surface. A distance from the first surface to the second surface defines a thickness. The opening is configured to receive at least a portion of a hub of the vehicle axle. The hub surface is adjacent to and surrounds the opening and extends from the first surface to the second surface. The hub surface includes a generally flat portion and a relief portion adjacent to at least one of the first surface and the second surface. The relief portion surrounds the opening and extends along the hub surface for a distance of at least 25% of the thickness.