Removable Shoe Insert with Slot and Rail Fastening
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing shoe inserts fail to securely attach within shoes, leading to slippage and discomfort due to adhesive wear or inability to easily remove and reinsert, which exacerbates poor fitting and stability issues.
Innovation Solution
A removably securable shoe insert with contoured surfaces and slots that engage with rails within the shoe, allowing for secure locking and easy detachment, formed from materials like polyurethane and cork, providing a durable and flexible fit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If adhesive strips or adhesive means are used to secure the insert within the shoe, then the insert is held in position to prevent slippage, but the insert cannot be easily removed for cleaning or replacement and the adhesive properties eventually wear out or fail
Solution Approach 1:
The shoe insert is divided into a modular system with separate components: the insert itself, the shoe structure with rails, and the slot engagement mechanism. This segmentation allows the insert to be securely held during use yet easily removed by disengaging from the rails, resolving the contradiction between security and ease of removal.
Solution Approach 2:
The slot and rail arrangement acts as an intermediary mechanical fastening system between the insert and shoe. This intermediary mechanism provides reliable security during wear while enabling tool-free removal and reinstallation, overcoming the limitations of direct adhesive bonding.
2Reliability
If adhesive means are used to secure the insert, then slippage is prevented, but the adhesive eventually wears out or fails causing insert slippage and discomfort
Solution Approach 1:
The patent replaces the chemical adhesive system with a mechanical fastening system using slots and rails. This mechanical engagement provides durable, long-lasting security without the degradation issues inherent in adhesive materials, ensuring consistent insert security throughout the product lifecycle.
3Ease of operation
If the insert is made removable for cleaning and replacement, then ease of operation is improved, but the insert may slip within the shoe during wear
Solution Approach 1:
The slot and rail arrangement provides a dynamic fastening system that transitions between two states: securely engaged during wear to prevent slippage, and easily disengaged for removal. This dynamic capability allows the insert to maintain security when needed while enabling convenient removal when required, resolving the contradiction between these opposing requirements.
Data Source
AI summary
A shoe insert for adjusting the fit of a shoe on a person's foot, and the combination of such insert and a shoe with elements providing for removable securement of the insert within the shoe. The shoe insert may be formed from a stable, resilient, and biodegradable material such as a molded mixture of polyurethane and cork, and may be removably secured within the shoe via a cooperating slot and rail system to prevent slippage of the insert within the shoe. The shoe or insert or both may be contoured to provide a custom anatomical fit to the person's foot.