Track Wheel Support Seal Using a Deformable Shaft Interface
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Solution Overview
Problem
Conventional track systems for vehicles face issues with infiltration of elements like water and debris due to gaps between the wheel assemblies and shafts, leading to performance degradation.
Innovation Solution
A support structure with a deformable portion made of a malleable material, such as an elastomer, is integrated between the shaft and wheel assemblies to provide a seal, preventing infiltration and enhancing the track system's performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional track systems use rigid connections between shaft and wheel assemblies, then structural strength is maintained, but gaps allow infiltration of water and debris
Solution Approach 1:
The patent employs a deformable portion made of elastomeric material that forms a flexible seal between the shaft and wheel assembly. This flexible membrane-like structure prevents infiltration of water and debris while accommodating the dynamic movement and tolerance variations in the rigid shaft and wheel components, thus resolving the contradiction between protection and structural simplicity.
Solution Approach 2:
The patent combines rigid materials (shaft and wheel assembly) with a deformable elastomeric material to create a composite sealing structure. The elastomeric portion integrates with the rigid components to form a unified assembly that maintains structural strength while adding sealing functionality, addressing the contradiction between reliability and device complexity.
2Reliability
If a seal is added between shaft and wheel assemblies, then infiltration is prevented, but manufacturing complexity increases
Solution Approach 1:
The deformable portion is molded directly onto the shaft or wheel assembly, merging the sealing function with the existing structural components. This integration eliminates the need for separate sealing components and assembly steps, preventing infiltration while maintaining ease of manufacture through a unified manufacturing process.
Solution Approach 2:
The patent utilizes the elastomeric material's ability to change its physical state during molding, allowing it to conform to the shaft and wheel assembly surfaces. This parameter change enables the seal to adapt to manufacturing tolerances and surface variations, ensuring reliable sealing without requiring precision manufacturing processes.
3Reliability
If the deformable portion is made more malleable, then sealing effectiveness improves, but structural strength decreases
Solution Approach 1:
The deformable portion is strategically placed only at the specific location where sealing is required between the shaft and wheel assembly, rather than making the entire structure malleable. This localized application of elastomeric material provides sealing effectiveness at the critical interface while maintaining the structural strength of the overall rigid components.
Solution Approach 2:
The patent creates a composite structure where the rigid shaft and wheel assemblies maintain overall structural strength, while the localized elastomeric deformable portion provides the necessary malleability for effective sealing. The combination leverages the strengths of both material types without compromising either sealing effectiveness or structural integrity.
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
The deformable portion effectively seals the gaps between the shaft and wheel assemblies, reducing the ingress of water and debris, thereby improving the longevity and efficiency of the track system.
Implementation Method 1
The deformable portion is configured to, when deformed, provide a seal between the shaft and the lateral side of the wheel assembly
Implementation Method 2
The resilient member biases the shaft and the guiding member toward a first position
Data Source
AI summary
A support structure, which is for a track system, includes a shaft, a wheel assembly and a deformable portion. The wheel assembly is connectable to the shaft, which has a shoulder at one end, such that a lateral side of the wheel assembly is engageable with the shoulder. The deformable portion is connected to one of the shaft and the wheel assembly, and is disposed, when the wheel assembly is connected to the shaft, between the lateral side of the wheel assembly and the shoulder. The deformable portion is configured to, when deformed, provide a seal between the shaft and the lateral side of the wheel assembly.