Headwear Size Adjustment Mechanism with Segmented Track
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Solution Overview
Problem
Current cap size adjustment systems are inadequate due to limited sizing increments, lack of symmetry, discomfort, and the need for cap removal during adjustments, leading to issues like looseness and structural integrity loss over time.
Innovation Solution
A cap size adjustment system featuring a centrally located track with teeth and opposing clip engagement components that allow for incremental size adjustments without losing structural integrity, maintaining symmetry, and enabling hassle-free adjustments without removing the cap.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a snapback system with pegs and holes is used, then size adjustment is enabled, but the number of adjustment increments is limited and the fit feels in-between (too tight or too loose)
Solution Approach 1:
The adjustment system is segmented into multiple discrete size increments (1-13) with each increment representing a specific fit precision. The pegs and holes are segmented along the adjustment strap to provide distinct, non-overlapping size options that eliminate in-between fits.
Solution Approach 2:
Different regions of the adjustment strap have different densities of pegs and holes to optimize for both large and small head sizes. The distribution of adjustment increments is non-uniform, with closer spacing for smaller sizes and wider spacing for larger sizes, providing local optimization for fit precision across the full size range.
2Reliability
If an elastic fit system is used, then the headwear secures to the head, but the elastic stretches out over time causing the structure to be destroyed and creating headaches
Solution Approach 1:
The elastic component is completely extracted from the adjustment system. Instead of using elastic material to provide securing force, the invention uses a rigid adjustment strap with mechanical fastening (pegs and holes) that maintains structural integrity indefinitely without stretching or deforming over time.
Solution Approach 2:
The adjustment system uses simple, non-elastic components that are replaceable if needed. The rigid strap and fastening mechanisms are designed to be durable and maintenance-free, eliminating the need to replace stretched elastic bands that would compromise structural integrity.
3Adaptability or versatility
If a fabric strap and buckle system is used, then size range is achieved, but the fabric stretches out over time causing a creep effect and the buckle creates a depression set in the fabric
Solution Approach 1:
The fabric strap and buckle components are extracted and replaced with a rigid adjustment strap and peg-hole fastening system. This eliminates the creep effect and depression formation associated with fabric under continuous tension, while maintaining the full size range through the distributed peg and hole positions.
Solution Approach 2:
The adjustment system combines rigid materials (for the strap and fastening components) to eliminate the stretching and deforming issues of fabric materials. The composite construction of pegs, holes, and rigid strap provides both size adjustability and long-term structural stability without creep.
4Ease of operation
If adjustment systems pull towards one direction, then size adjustment is achieved, but the cap becomes asymmetrical
Solution Approach 1:
The adjustment system is deliberately designed with asymmetrical placement of functional components (pegs on one side, holes on the other) to enable adjustment capability. The asymmetry is confined to the mechanical fastening elements while the overall cap shape and aesthetic features maintain symmetry for visual balance.
Data Source
AI summary
A mechanism to adjust the size of headwear is provided. Two engagement clips attach to either side of an open space on the headwear. A tooth/track connects the two clips. The clips may be adjusted to fit the size of the head.