Adjustable Headbands for Head-Mounted Displays
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Solution Overview
Problem
Existing headbands for electronic devices often fail to provide a secure and adjustable fit, leading to discomfort and potential slippage during use, as they lack adaptive curvature and effective mechanisms for maintaining the position of headband portions relative to each other.
Innovation Solution
The headband design incorporates bifurcated portions with embedded stiffeners and adjustable keeper loops, allowing for adaptive curvature and secure attachment to the user's head, with features like hair-safe hook and loop fasteners and seamless webbing for comfort and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the headband is made flexible to conform to the user's head, then comfort is improved, but the ability to maintain fixed position and angle between portions deteriorates
Solution Approach 1:
The headband is divided into multiple segments or portions (first headband portion, second headband portion) that can move independently relative to each other. This segmentation allows each portion to flex and conform to different areas of the user's head for comfort, while the segments are connected through adjustment mechanisms (pivots, keeper loops) that enable stable positioning when needed.
Solution Approach 2:
The headband incorporates dynamic adjustment mechanisms including pivots that allow rotation between portions and keeper loops that can slide to adjust the distance between portions. These dynamic elements enable the headband to transition between flexible conforming states and stable fixed-position states, resolving the contradiction between comfort and positional stability.
2Adaptability or versatility
If the headband is made adjustable to fit different head sizes, then adaptability is improved, but device complexity deteriorates
Solution Approach 1:
The headband uses dynamic adjustment mechanisms (pivots for rotation, sliding keeper loops for distance adjustment) that provide continuous variability in fit without requiring multiple discrete size options. This dynamic approach achieves high adaptability while maintaining relatively simple structure compared to systems with multiple fixed-size components.
Solution Approach 2:
The adjustment mechanisms serve multiple functions: pivots enable both angle adjustment and position stabilization, while keeper loops provide both distance adjustment and position locking. This multi-functionality reduces the need for separate adjustment components, thereby reducing overall device complexity while maintaining high adaptability.
3Stability of the object's composition
If stiffeners are added to maintain the angle between headband portions, then stability is improved, but comfort deteriorates due to reduced flexibility
Solution Approach 1:
Stiffeners are applied locally at specific positions where angle maintenance is critical (between headband portions), rather than throughout the entire headband. This localized stiffening provides the necessary angular stability at key joints while leaving other portions of the headband flexible and comfortable against the user's head.
Solution Approach 2:
The headband is segmented into portions with different mechanical properties - some portions contain stiffeners for structural stability and angle maintenance, while other portions remain flexible for comfort. This segmentation allows the headband to simultaneously achieve both stability and flexibility in different locations.
Data Source
AI summary
A head-mounted device may have a head-mounted housing containing rear-facing displays that display images for a user when the head-mounted housing is worn by the user. The head-mounted housing may be coupled to the user's head using a headband. The headband may include a first headband portion and a second headband portion that extends from the first headband portion at a fixed angle. Stiffeners may be included in the first and second headband portions. The stiffeners may be formed from braided cords and may be embedded in the first and second headband portions to allow the headband to conform to a user's head when worn. Other stiffeners may be mounted to a surface of the headband to maintain an angle between the first and second headband portions. The ends of the headband may have curved corners, and may appear seamless to the naked eye.