Flip-Flop Strap Wrapping for Secure Fit
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Solution Overview
Problem
Footwear with a v-strap design, such as flip-flops and sandals, often cause foot and toe pain, strain, fatigue, blisters, and discomfort due to improper fit and size, as the toe post and v-strap can rub against delicate skin and require excessive gripping to stabilize the footbed.
Innovation Solution
A hidden securing system using one or more decorative straps that are connected to secure loose-fitting v-strap style footwear, providing a more comfortable and personalized fit by wrapping around the side members and toe post, reducing foot fatigue and pain through adjustable tension.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a toe post is used to secure the flip-flop to the foot, then the footwear is stabilized to the foot, but the toe post may rub against delicate skin between the toes causing discomfort, irritated skin or blisters
Solution Approach 1:
The invention divides the single toe post into multiple toe posts positioned at different locations. This segmentation distributes the contact points and reduces the pressure and friction on any single point of delicate skin between the toes, while collectively providing sufficient stabilization for the footwear.
2Object-affected harmful factors
If the toe post is made thinner to reduce skin irritation, then less friction is caused, but the wearer must grip toe and foot muscles tighter to secure the toe post which may result in discomfort, irritated skin or blisters
Solution Approach 1:
By segmenting the single thin toe post into multiple thin toe posts, the total contact surface area is distributed across multiple points. This allows each individual toe post to remain thin enough to minimize friction on delicate skin, while the collective arrangement of multiple toe posts provides sufficient mechanical stability, reducing the need for excessive gripping effort.
3Reliability
If the v-strap is made tighter to secure the footwear, then the fit is more secure, but it can rub and cause discomfort, skin irritation, or blistering
Solution Approach 1:
The single v-strap is divided into multiple separate straps that connect the side members to different toe posts. This segmentation distributes the securing force across multiple contact points rather than concentrating it on a single strap, providing a secure fit while reducing the friction and pressure on any one area of the foot, thereby minimizing skin irritation and blisters.
4Device complexity
If the footwear has only three points to stabilize the footbed, then the structure is simple, but the wearer's foot slides off or around on the footbed causing improper fit
Solution Approach 1:
The invention increases the number of stabilization points from three to five or more by segmenting the single toe post into multiple toe posts. This additional segmentation provides more contact points between the footwear and the foot, preventing the foot from sliding off or around on the footbed, while maintaining a relatively simple overall structure.
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 solution provides a more secure and comfortable fit by pulling the side members together, reducing friction and discomfort, thereby minimizing foot and toe strain, fatigue, and the risk of blisters.
Implementation Method 1
A longitudinally elastic strap has a first end and an opposite second end
Data Source
AI summary
Wrapped footwear includes a flip-flop which is wrapped in various ways with a strap. In one embodiment the strap is wrapped around both side members of the flip-flop. In another embodiment the strap is wrapped around the toe post and the side members of the flip-flop. And in another embodiment, multiple straps are wrapped around the toe post and the ankle of the wearer.