HMD Facial Interface Connector for Stable Fit and Pressure Relief
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Solution Overview
Problem
Head-mountable devices (HMDs) face challenges in providing optimal comfort due to varying user facial structures and are susceptible to damage from forces during use, transportation, and storage, affecting sensitive components.
Innovation Solution
The HMDs incorporate connectors with stops and multiple degrees of freedom, including pin-and-bowl connections and sliding posts, positioned at the maxilla and zygoma regions, allowing for dynamic adjustment and even force distribution across the user's face.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If rigid connectors are used to stabilize the HMD, then structural stability is improved, but user comfort deteriorates due to inability to accommodate varying facial structures
Solution Approach 1:
The connector is designed with multiple degrees of freedom including translation in a first plane and axial depth translation in a second plane, allowing the connector to dynamically adjust its position and orientation to accommodate varying facial structures while maintaining stable HMD placement
Solution Approach 2:
The connector incorporates a compressible portion that can change its physical state under applied forces, allowing it to adapt to different facial contours and pressure distributions, thereby maintaining both stability and comfort across different users
2Reliability
If fixed connectors are used to protect components from forces, then component protection is improved, but adaptability to different facial profiles deteriorates
Solution Approach 1:
The connector allows dynamic adjustment through multiple degrees of freedom, enabling it to adapt to different facial profiles while maintaining protective function against forces during use, transportation, and storage
Solution Approach 2:
The compressible portion acts as a cushioning element that absorbs and distributes forces before they reach sensitive components, protecting them while allowing the connector to adapt to various facial structures
3Ease of operation
If connectors with multiple degrees of freedom are used to accommodate facial variations, then user comfort is improved, but device complexity increases
Solution Approach 1:
The connector is divided into functional segments including a first portion for translation in a first plane, a second portion for axial depth translation, and a compressible portion, allowing each segment to handle specific degrees of freedom independently while maintaining overall simplicity
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
These connectors enhance user comfort by evenly distributing pressure and stabilizing the HMD, protecting sensitive components from undue forces, thereby improving the overall AR/VR experience.
Implementation Method 1
a portion of the connector is preloaded to return a threshold distance away from the stop
Implementation Method 2
a portion of the connector is preloaded to return a threshold distance away from the stop
Data Source
AI summary
An apparatus includes a display, a facial interface, and a connector between the display and the facial feature. The connector can include a stop.