Cushioned Footpad with Embedded Reinforcing Structure
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Solution Overview
Problem
Footpads for self-balancing vehicles face challenges in providing both comfort and stability, as firmer materials enhance control and stability but compromise comfort, while softer materials improve comfort but may lead to lift-off and reduced fixation integrity.
Innovation Solution
A footpad design incorporating a low durometer elastomeric material body with embedded reinforcing members for enhanced ride comfort and stability, featuring fastener apertures and a support structure that stiffens the perimeter to prevent lift-off and improve fixation integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If softer low durometer elastomeric materials are used for the footpad, then ride comfort is improved through better cushioning and vibration dampening, but fixation integrity deteriorates due to increased susceptibility to fastener pull out and edge tear out
Solution Approach 1:
The footpad combines soft low durometer elastomeric material with a rigid support structure (wood, plastic, or metal) to create a composite construction. The elastomeric layer provides comfort while the rigid support structure prevents fastener pull out and edge tear out, resolving the contradiction between comfort and fixation integrity
Solution Approach 2:
The support structure is strategically positioned within the elastomeric material body, with reinforcing members located near the perimeter and fastener attachment points. This local reinforcement provides structural integrity where needed while maintaining softness in the foot contact areas for comfort
2Reliability
If firmer high durometer elastomeric materials or rigid materials like wood and plastic are used for the footpad, then fixation integrity and ride control are improved through greater resistance to fastener pull out and edge tear out, but ride comfort deteriorates due to reduced cushioning and increased shock transmission
Solution Approach 1:
The composite construction allows the rigid support structure to handle structural loads and fastener forces while the elastomeric material absorbs vibrations and impacts, resolving the contradiction between fixation integrity and ride comfort
Solution Approach 2:
The footpad is divided into functional zones: a rigid support structure for structural integrity and fastener attachment, and a soft elastomeric layer for comfort and vibration dampening. This segmentation allows each material to perform its optimal function
3Ease of operation
If softer low durometer elastomeric materials are used for the footpad, then ride comfort is improved through better shock absorption, but ride control deteriorates due to increased deformation under load and footpad lift off from the mounting surface
Solution Approach 1:
The rigid support structure embedded within the elastomeric material prevents excessive deformation and footpad lift off while allowing the elastomeric layer to provide cushioning. This composite approach resolves the contradiction between comfort and ride control
Solution Approach 2:
The support structure is positioned strategically within the elastomeric body, with reinforcing members near the perimeter and under critical load areas. This local reinforcement prevents deformation and lift off while maintaining softness in foot contact zones
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 design achieves a comfortable ride with improved control and stability by allowing deformation under weight while maintaining firm perimeter response and preventing dirt accumulation, ensuring secure attachment to the vehicle.
Implementation Method 1
The low durometer elastomeric material easily deforms under the rider's weight thereby delivering a desirable soft, comfortable feel
Implementation Method 2
The low durometer material also effectively dampens vehicle vibrations and absorbs vehicle impact forces for additional ride comfort
Implementation Method 3
The addition of a support structure comprising at least one stiffer reinforcing member and at least a portion disposed in a region near the elastomeric material body perimeter reduces perimeter deformation
Implementation Method 4
Fasteners passing through a stiffer reinforcing member and in some cases adjacent to a reinforcing member are less likely to pull out or tear out from the footpad
Data Source
AI summary
A footpad for a self-balancing vehicle comprising a low durometer elastomeric material body for enhanced ride comfort and a support structure comprising at least one stiffer reinforcing member having at least a portion embedded in the elastomeric material body and in close proximity to the elastomeric material body edges for improved footpad response and fixation integrity.