Flexible Interlocking Closure for Continuous Strap Adjustment
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Solution Overview
Problem
Existing adjustable clothing fasteners, such as caps, often use hook and loop or plastic strap systems that can catch on hair and fail to provide a clean, smooth appearance, and lack infinite adjustment capability.
Innovation Solution
A flexible interlocking closure system comprising a first portion with a channel feature and a second portion with a rib feature, allowing for continuous adjustment and a smooth appearance, using materials like polyamide or polyester, and manufactured through injection molding or 3D printing, enabling the strap to fit any head size and providing a variable circumference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If hook and loop fastener is used for adjustable closure, then adjustment capability is provided, but it can catch on hair and is difficult to adjust
Solution Approach 1:
The closure is divided into two separate portions: a first portion with a channel feature and a second portion with a rib feature. This segmentation allows each portion to have optimized functions - the channel provides a smooth guiding path while the rib provides secure engagement, eliminating the catching problem of hook-and-loop fasteners while maintaining ease of adjustment.
Solution Approach 2:
The invention extracts and eliminates the problematic hook-and-loop fastening mechanism entirely, replacing it with a smooth channel-rib interlocking system. By removing the source of the harmful effect (hooks that catch hair), the solution achieves both ease of operation and elimination of harmful factors.
2Adaptability or versatility
If plastic strap with holes and rivets is used for adjustable closure, then size adjustment is provided, but it does not provide a clean smooth appearance
Solution Approach 1:
The invention applies different structural qualities to different portions of the closure system. The first portion features a smooth channel surface for aesthetic purposes, while the second portion has a rib structure for functional engagement. When assembled, the rib fits within the channel creating a clean appearance while maintaining adjustment capability through the interlocking mechanism.
Solution Approach 2:
The rib feature is nested within the channel feature, with the rib fitting inside the channel cavity. This nesting arrangement allows the adjustment mechanism to be concealed within the structure, providing a smooth external appearance while maintaining the functionality of size adjustment through the interlocking rib-channel system.
3Adaptability or versatility
If existing adjustable fasteners are used, then closure function is provided, but they lack infinite adjustment capability
Solution Approach 1:
The closure system is designed to be dynamic rather than static with fixed adjustment points. The rib can be positioned at any location along the channel length, enabling continuous infinite adjustment rather than discrete stepped adjustment. This dynamic positioning capability is achieved through the simple interlocking geometry of the rib and channel without requiring complex mechanisms.
Data Source
AI summary
An apparatus includes a first portion and a second portion. The first portion generally comprises a channel feature. The second portion generally comprises a rib feature. The rib feature is generally configured to fit within the channel feature.