Inflatable Footwear Bladder Segmentation for Secure Fit
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Solution Overview
Problem
Conventional footwear often fails to provide adequate cushioning and secure fit, leading to discomfort, increased risk of injury, and fatigue due to inadequate support, especially during daily activities.
Innovation Solution
The integration of an inflatable bladder system within the upper of footwear, which extends from the heel region across the throat region, forming a zig-zag pattern and coupled with an inflation mechanism, to securely fit the foot by tightening around it when inflated, thereby reducing movement and enhancing support.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional footwear uses traditional padding and securing mechanisms, then the construction is simple, but the fit and cushioning are inadequate leading to discomfort and injury risk
Solution Approach 1:
The bladder is divided into multiple segments (first bladder segment, second bladder segment, third bladder segment) that are fluidly connected. Each segment can be independently positioned at different locations on the foot (heel region, midfoot region, forefoot region), allowing targeted cushioning and secure fit in specific areas while maintaining overall system simplicity
Solution Approach 2:
The invention transitions from two-dimensional flat padding to a three-dimensional inflatable bladder system that wraps around the foot contours. The bladder segments form a zig-zag pattern that follows the foot's anatomy, providing multi-directional support and cushioning that flat padding cannot achieve
2Device complexity
If the footwear uses minimal padding and support structures, then the device complexity is reduced, but the foot movement relative to the upper increases causing discomfort and injury
Solution Approach 1:
The invention uses an inflatable bladder system filled with fluid (air or liquid) to provide dynamic support. The inflation mechanism allows the bladder segments to expand and conform to the foot's shape, creating a secure fit that prevents excessive foot movement while maintaining comfort through controlled pressure distribution
Solution Approach 2:
The bladder system transitions from a static, deflated state to a dynamic, inflated state that actively adapts to the foot's contours. This dynamic adjustment allows the upper to securely hold the foot during movement while maintaining comfort, eliminating the need for complex mechanical fastening systems
3Manufacturing precision
If the bladder uses multiple segments with joints, then the fit precision is improved, but the manufacturing complexity increases
Solution Approach 1:
The bladder is constructed from multiple pre-formed segments that are fluidly connected through joints. Each segment can be manufactured separately using standard molding techniques, then assembled by connecting the joints, simplifying the manufacturing process while achieving precise fit through the segmented structure that conforms to different foot regions
Solution Approach 2:
The bladder segments are designed with universal joints that can be fluidly connected in various configurations. The same segment design can be used in different positions (heel, midfoot, forefoot) and combined in different numbers, allowing a single manufacturing process to produce multiple fit configurations without requiring custom parts for each location
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 inflatable bladder system provides improved comfort and reduces the risk of injury by securing the foot within the shoe, enhancing support and reducing heel slip, while also simplifying the construction process by eliminating the need for additional padding.
Implementation Method 1
an inflation mechanism operatively coupled to the bladder for inflating the bladder such that the flexible layer is drawn toward the foot
Data Source
AI summary
An upper comprising a flexible layer configured to receive a foot, a bladder coupled to an outer surface of the flexible layer, and an inflation mechanism operatively coupled to the bladder for inflating the bladder such that the flexible layer is drawn toward the foot. The bladder extends from a lateral side in a heel region across a throat region to a medial side in the heel region. The bladder comprises a plurality of fluidly connected segments, each segment forming an angle with an adjacent segment.