Footwear Sole Insert with Composite Cushioning and Durability
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Solution Overview
Problem
Existing sole structures for footwear lack an efficient design for integrating inserts that provide both cushioning and durability, while also maintaining a balanced support and responsiveness during athletic movements.
Innovation Solution
A sole structure featuring a midsole with a recessed area for an insert, where the insert comprises a first material with a specific gloss unit value and a second material with a higher gloss unit value, disposed on the outer surface of the first material and within the recessed area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a foam insert is used to provide cushioning, then cushioning performance is improved, but durability and support balance deteriorate
Solution Approach 1:
The insert is constructed from a composite material comprising a foam portion and a fluid-filled bladder portion. The foam portion provides cushioning through resilient compression, while the fluid-filled bladder provides durability and support through fluid pressure distribution. This composite structure resolves the contradiction by combining materials with complementary properties to achieve both cushioning performance and durability.
Solution Approach 2:
The insert is divided into functionally distinct segments: a foam portion for cushioning and a fluid-filled bladder portion for durability and support. Each segment performs its specific function optimally, and their combination within the single insert structure allows simultaneous achievement of cushioning and durability without compromising either aspect.
2Reliability
If an insert is added to enhance durability, then durability is improved, but device complexity increases
Solution Approach 1:
The foam portion and fluid-filled bladder portion are merged into a single integrated insert structure that fits within the midsole recess. This unified design enhances durability through the fluid-filled bladder while avoiding the complexity of multiple separate components, as the insert functions as one cohesive unit with both cushioning and durability features.
3Shape
If multiple materials with different gloss unit values are used, then aesthetic appeal is improved, but manufacturing precision requirements increase
Solution Approach 1:
The insert uses a composite material structure where the foam portion and fluid-filled bladder portion can be manufactured with different surface finish properties (gloss unit values). The foam portion can have a matte or textured finish for aesthetic appeal, while the fluid-filled bladder portion can have a smooth glossy finish. The composite construction allows different materials with varying aesthetic properties to be integrated without requiring precise alignment, as each portion is optimized independently.
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 described sole structure effectively enhances cushioning and durability by integrating the insert, providing balanced support and responsiveness, while also offering improved aesthetic appeal through the use of materials with varying gloss unit values.
Implementation Method 1
The midsole may additionally or alternatively incorporate an insert (e.g., a fluid-filled bladder or a foam insert) to increase the durability of the sole structure, as well as to provide cushioning to the foot by compressing resiliently under an applied load to attenuate ground-reaction forces.
Implementation Method 2
The midsole provides cushioning for the foot and may be partially formed from a polymer foam material that compresses resiliently under an applied load to cushion the foot by attenuating ground-reaction forces.
Data Source
AI summary
A sole structure for an article of footwear includes a midsole having a top surface, a bottom surface opposite the top surface, and a peripheral surface extending between the top surface and the bottom surface. The bottom surface includes a recess defining a first opening in the peripheral surface. The sole structure for an article of footwear also includes an insert disposed within the recess and including a first material having a first gloss unit value and a second material disposed on an outer surface of the first material and having a second gloss unit value. The second material is at least partially disposed within the first opening.