Shoe Sole Protrusion Geometry for Impact Force Distribution

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Solution Overview

Problem

Shoes lack effective cushioning and shock absorption, particularly during athletic activities, as existing sole designs fail to distribute impact forces efficiently throughout the body.

Innovation Solution

A sole with a base and protrusions, including angled and perpendicular sides, is integrated with the shoe's midsole or inserted into the shoe's upper cavity, providing cushioning, protection, and shock absorption by distributing impact forces across the foot.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a traditional flat sole design is used, then the shoe structure is simple, but shock absorption and cushioning effectiveness are insufficient

Engineering Contradiction:
Improveshock absorption effectivenessVSAvoidsole structure complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The sole is divided into multiple protrusions with different geometries (angled sides, perpendicular sides, curved surfaces) distributed across the base surface. Each protrusion acts as an independent shock-absorbing element, allowing the sole to maintain simplicity while effectively distributing and absorbing impact forces through segmented structural units

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Different regions of the sole have protrusions with varying geometries and distributions tailored to specific impact zones. The protrusions are strategically positioned and shaped to provide localized cushioning where needed most, enhancing shock absorption effectiveness without requiring complex structures throughout the entire sole

Inventive Principle:
Principle #3Local quality

2Ease of operation

If the sole provides comprehensive cushioning coverage, then comfort is improved, but the sole occupies more volume and may increase shoe weight

Engineering Contradiction:
Improvewearer comfortVSAvoidsole volume
Core Design Contradiction:
Ease of operationVSVolume of moving object

Solution Approach 1:

The sole employs a protrusion-based architecture that creates a porous-like structure with voids between the protrusions. This allows comprehensive cushioning coverage across the foot contact area while maintaining low volume, as the protrusions provide cushioning function without requiring solid material throughout the entire sole volume

Inventive Principle:
Principle #31Porous materials

Solution Approach 2:

The protrusions are designed with geometries that allow dynamic deformation under impact loads (angled sides that deflect, perpendicular sides that compress, curved surfaces that flex). This dynamic response provides comprehensive cushioning coverage adaptively while maintaining a compact, space-efficient structure that does not require excessive volume

Inventive Principle:
Principle #15Dynamics

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 sole effectively absorbs shock and distributes impact forces, enhancing comfort and support for the wearer by providing additional cushioning and resilience across the foot's contact points.

Implementation Method 1

The protrusions may serve to absorb the shock of impact with the ground or floor during an activity

Methodology Applied
Scientific EffectShock absorption: Damping

Implementation Method 2

distributing impact forces across the foot

Methodology Applied
Scientific EffectImpact force distribution: Impact Force

Data Source

PatentUS9402440B2Cushioning sole for shoe
Publication Date: 2016.08.02 NIKE INC
  • US9402440B2 patent drawing
  • US9402440B2 patent drawing
  • US9402440B2 patent drawing

AI summary

A sole in accordance with the present invention may include a sole for attachment to an outside of a shoe. Moreover, a sole of the present invention may include a sole for insertion within an inner cavity formed by an upper of a shoe. In exemplary aspects the sole includes a base and a plurality of protrusions projecting from the base and integrally constructed with the base. Protrusions may include a side extending at an angle from the base. In addition, protrusions may include a side extending near perpendicular from the base. A plurality of protrusions may be arranged at ball portions of the sole. In addition, a plurality of protrusions may be arranged at a heel portion of the sole.