Integrated Footwear Toe Cap with Concealed Attachment Tabs

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Solution Overview

Problem

The toe cap in sports footwear tends to detach over time due to wear and tear, leading to deterioration.

Innovation Solution

An integrated outsole design with a traditional rubber toe cap and built-in tabs that secure the toe cap to the footwear using gluing or sewing, with the EVA midsole placed between the toe cap and outsole, ensuring a strong and durable attachment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a traditional toe cap is attached to footwear, then the toe cap provides reinforcement and protection, but it detaches over time due to wear and tear

Engineering Contradiction:
Improvetoe cap attachment reliabilityVSAvoidtoe cap service life
Core Design Contradiction:
ReliabilityVSDuration of action of stationary object

Solution Approach 1:

The toe cap is divided into multiple segments with individual tabs at each end, allowing separate attachment points that distribute stress and prevent detachment. The segmentation enables the toe cap to maintain secure attachment through its entire service life by anchoring at multiple locations rather than relying on a single attachment point.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The attachment mechanism extends into the vertical dimension by incorporating tabs that reach through the midsole layer to anchor in the outsole. This multi-layer attachment approach transforms a simple surface attachment into a three-dimensional anchoring system that spans across the midsole and outsole, preventing detachment over time.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Reliability

If tabs are added to secure the toe cap, then detachment is prevented, but the device complexity increases

Engineering Contradiction:
Improvetoe cap attachment reliabilityVSAvoidoutsole structure complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The tabs are merged into the toe cap structure itself, making the attachment mechanism an integral part of the toe cap rather than a separate component. This integration eliminates the need for additional separate attachment devices while maintaining secure attachment through the tabs that extend into the outsole.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The toe cap structure serves its own attachment function through the integrated tabs, eliminating the need for separate attachment mechanisms. The tabs are built into the toe cap design, allowing it to self-secure to the footwear through the midsole and outsole without requiring additional external components.

Inventive Principle:
Principle #25Self-service

Data Source

PatentEP3381313B1Outsole with integrated toe cap
Publication Date: 2020.10.28 BORFIR INTERNACIONAL SL
  • EP3381313B1 patent drawingFigure 1a~1b
  • EP3381313B1 patent drawingFigure 2
  • EP3381313B1 patent drawingFigure 3~4

AI summary

A sole is disclosed with an integrated toe cap (1) comprising: a sole (2) joined to a toe cap (3), wherein the toe cap surrounds a front portion of a footwear item and comprises a left side (8), a right side (9) and a central area (7). Each side (8,9) comprises a tab (4) configured to be fastened by means of gluing or sewing to a band (10) arranged in an upper surface of an EVA midsole (5) of the footwear, said tabs (4) remaining concealed in an inner portion of the footwear. The present invention is a new type of sole for footwear with integrated traditional toe cap for the toes, preventing the toe cap from being able to detach.