HMD Face Seal With Hinged Support Members
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Solution Overview
Problem
Conventional face seal designs in head-mounted displays often fail to conform to varying user face shapes, leading to compromised light blocking and uncomfortable high pressure areas, especially when the seal is relied upon for supporting the display.
Innovation Solution
The design incorporates movable seal support members connected to a housing via hinge assemblies, allowing for adjustable reaction surfaces and conforming to the user's face geometry, combined with a compressible material to enhance comfort and light blocking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional foam face seal structure is used, then the head-mounted display can be supported, but the seal fails to conform to varying user face shapes, causing high pressure areas and compromised light blocking
Solution Approach 1:
The face seal incorporates movable seal support members that can dynamically adjust their position and orientation to conform to different face shapes. The hinge assemblies enable the seal structure to adapt its configuration based on the user's face geometry, transforming a static foam structure into a dynamic, adaptive system that maintains comfort and sealing effectiveness across varying users.
Solution Approach 2:
The face seal is divided into multiple segmented components including movable seal support members, hinge assemblies, and a foam structure. This segmentation allows each component to independently adjust and conform to specific regions of the user's face, enabling better overall adaptation while distributing pressure more evenly across the contact areas.
2Object-affected harmful factors
If the face seal is designed to block exterior light effectively, then light blocking is improved, but the seal may create uncomfortable high pressure areas when relied upon for support
Solution Approach 1:
The movable seal support members with hinge assemblies dynamically adjust the seal's contact pressure distribution. When the head-mounted display needs support, the hinges allow the seal to conform to the face shape, distributing the support weight across a larger area rather than concentrating it in high pressure points, thereby maintaining both light blocking effectiveness and user comfort.
Solution Approach 2:
The foam structure is strategically positioned and configured to provide light blocking in specific areas where exterior light would penetrate, while the movable seal support members handle the structural support function. This local differentiation of functions allows the foam to focus on optical sealing without bearing excessive support loads that would create uncomfortable pressure areas.
3Adaptability or versatility
If a fixed seal structure is used, then the device structure is simple, but it cannot accommodate different face shapes and sizes
Solution Approach 1:
The introduction of hinge assemblies creates a dynamically adjustable seal structure that can accommodate various face shapes and sizes. The hinges enable the seal support members to pivot and adjust their angles, providing adaptability across different users while maintaining a relatively simple overall structure that can be manufactured and assembled efficiently.
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
This solution improves user comfort and light-blocking efficiency by accommodating different face shapes and sizes, reducing pressure points and ensuring effective sealing around the eyes.
Implementation Method 1
a compressible material connected to the front surface of the support member
Data Source
AI summary
A head-mounted display includes a housing. A support member is connected to the housing. A sensor is located on a front surface of the support member and is configured to measure a characteristic of a user. A compressible material is configured to be compressed against the front surface of the support member.