Adjustable Head Securement for HMDs
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Solution Overview
Problem
Existing head-mountable devices often cause discomfort due to uneven force distribution on the user's face, leading to fatigue, as they typically allow adjustments only in one direction, focusing pressure on specific areas like the cheeks and nose rather than distributing it across the forehead and other regions.
Innovation Solution
The implementation of a head securement element with adjustable straps that allow for the control of both the magnitude, location, and direction of forces applied to the face, including a support strap and a tilt strap with tensioning elements, enabling users to customize the fit and distribute forces more evenly across the forehead and other regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a single-direction adjustment mechanism is used, then the device can be secured to the head, but the force distribution becomes uneven causing discomfort and fatigue
Solution Approach 1:
The head securement element is divided into multiple independent straps (first strap, second strap, third strap, fourth strap) that can be adjusted separately. Each strap targets specific regions of the head, allowing independent force distribution control to eliminate pressure concentration on single areas.
Solution Approach 2:
The adjustment mechanisms are made dynamically adjustable during device operation. Users can modify strap tensions and positions while wearing the device to optimize comfort, transforming a static single-direction adjustment into a multi-directional dynamic system.
2Ease of operation
If multiple adjustable straps are added to distribute forces evenly, then user comfort improves, but the device complexity increases
Solution Approach 1:
Each strap in the system serves multiple functions: the first and second straps provide both lateral support and forward/backward positioning, while the third and fourth straps contribute to both stability and comfort. This multi-functionality reduces the need for additional specialized components.
Solution Approach 2:
The system allows continuous adjustment of multiple parameters including strap tension, attachment point positions, and strap angles. These parameter changes enable adaptation to different head shapes and sizes without requiring completely different device configurations.
Data Source
AI summary
Systems of the present disclosure can provide a head-mountable device with a head securement element that allows a user to adjust both the magnitude, location, and direction of forces applied to the face of the user. Examples of adjustment mechanisms described herein allow a user to control the tilt of the head-mountable device relative to a head securement element, as well as the tightness of the head securement element. Accordingly, the user can select a fit that distributes forces widely, maximizes comfort, allows the user to enjoy the head-mountable device for longer durations of time.