Integrated Foot Support Bladder Straps for Secure Ventilated Footwear
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Solution Overview
Problem
Conventional footwear lacks effective mechanisms for securing the foot within the shoe while providing ventilation and support, particularly in casual footwear like sandals and flip-flops.
Innovation Solution
Incorporation of a bladder system with thermoplastic elastomer sheets forming a fluid-tight chamber that supports the foot and connects to securing straps, allowing fluid communication between the foot support chamber and side chambers, which can expand or contract to secure the foot.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional footwear structures are used, then the footwear is simple in structure and easy to manufacture, but the foot security and support are insufficient
Solution Approach 1:
The patent merges the foot support function and the securing strap function into a single integrated bladder structure. The bladder includes a foot support chamber portion that directly supports the plantar surface of the foot, and side chamber portions that extend outward to form securing straps, all connected through fluid communication. This integration eliminates the need for separate support structures and straps, providing enhanced foot security while maintaining manufacturing simplicity.
Solution Approach 2:
The bladder structure serves multiple functions simultaneously: it provides foot support through the foot support chamber portion, creates securing straps through the side chamber portions, and enables adjustable tightness through fluid communication. This multi-functionality resolves the contradiction by delivering reliable foot security through a single versatile component rather than multiple separate elements.
2Reliability
If conventional footwear structures are used, then the footwear is easy to manufacture, but the ventilation and comfort are insufficient
Solution Approach 1:
The patent employs a flexible bladder structure made from elastomeric material that can be molded into the desired shape. The bladder's flexible nature allows it to conform to the foot's shape while providing ventilation channels through its structure. This flexible shell approach delivers comfort and ventilation benefits without requiring complex assembly processes, as the entire structure can be manufactured as a single molded piece.
3Reliability
If a bladder system is incorporated, then the foot security and support are enhanced, but the manufacturing complexity increases
Solution Approach 1:
The bladder is segmented into distinct functional portions: a foot support chamber portion and side chamber portions. This segmentation allows each portion to be optimized for its specific function while maintaining a unified fluid-filled structure. The segmentation enables the bladder to provide targeted support under the foot while simultaneously forming adjustable securing straps, enhancing foot security without requiring multiple separate components that would complicate manufacturing.
Solution Approach 2:
The patent utilizes fluid pressure within the bladder to provide support and security. The fluid-filled chambers can be inflated to the desired pressure to support the plantar surface of the foot and to form the securing straps with appropriate tension. This pneumatic/hydraulic approach allows for adjustable foot support and security levels without mechanical adjustment mechanisms, simplifying the manufacturing process while maintaining high reliability.
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
Provides enhanced foot security and ventilation by using a bladder system that adjusts to the foot's shape, offering improved comfort and stability in casual footwear.
Implementation Method 1
fluid passages configured to move fluid (e.g., when the footwear is secured to a wearer's foot) from beneath the wearer's foot to the securing strap(s)
Implementation Method 2
a first thermoplastic elastomer sheet and a second thermoplastic elastomer sheet joined to the first thermoplastic elastomer sheet by an outer perimeter bond
Data Source
AI summary
Bladders for footwear uppers, footwear components including the bladders, articles of footwear including the bladders, and/or methods of making and using such bladders are described. Such bladder systems may include two thermoplastic elastomer sheets joined together at an outer perimeter bond. The outer perimeter bond may be shaped such that the interior chamber of the bladder forms: (i) a foot support chamber portion for supporting at least a portion of a plantar surface of a wearer's foot and (ii) one or more side chamber portions forming at least part of one or more securing straps and/or at least part of one or more footwear upper components. The one or more side chamber portions extend outward from the foot support chamber portion and are in fluid communication with the foot support chamber portion.