Pneumatic Facial Interface for Pressure Distribution in Head-Mounted Devices
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional head-mountable devices fail to provide a custom, comfortable fit for users with varying facial structures, leading to pressure points and discomfort during prolonged use, which can exacerbate user fatigue.
Innovation Solution
A head-mountable device featuring a facial interface with pneumatic chambers and extensions that can be actuatable to dynamically adjust contact points and pressure distribution based on facial anatomy, using mechanisms like fans, control valves, and sensors to respond to user fatigue, temperature, and blood flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional head-mountable devices use a fixed facial interface structure, then the device structure is simple and easy to manufacture, but it cannot accommodate different user facial structures, leading to pressure points and discomfort
Solution Approach 1:
The facial interface incorporates pneumatic chambers that can dynamically adjust their shape and contact points with the user's face. The chambers are actuatable to change the interface configuration in real-time, allowing adaptation to different facial structures while maintaining a relatively simple base structure.
Solution Approach 2:
The system changes physical parameters of the facial interface by inflating and deflating pneumatic chambers. This allows the interface to transform from a simple structure to one that conforms to various facial geometries, resolving the contradiction between structural simplicity and adaptability.
2Object-affected harmful factors
If the facial interface uses rigid contact points, then the structure is stable and easy to control, but it creates pressure points on the user's face during prolonged wear
Solution Approach 1:
The facial interface uses pneumatic chambers instead of rigid contact points. These chambers can inflate to distribute pressure across larger surface areas of the face, eliminating pressure points while maintaining structural stability through controlled inflation and the underlying support framework.
Solution Approach 2:
The pneumatic chambers act as flexible elements that can conform to the user's facial contours. This flexibility allows the interface to adapt to individual facial geometries without creating concentrated pressure points, while the chamber structure itself maintains stability when inflated.
3Adaptability or versatility
If the device uses a custom-fitted facial interface for each user, then comfort is improved, but manufacturing complexity and cost increase significantly
Solution Approach 1:
The facial interface is designed as a universal component that can adapt to multiple user facial structures through the pneumatic adjustment mechanism. Instead of manufacturing custom interfaces for each user, a single multi-functional interface design serves all users, greatly simplifying manufacturing while maintaining custom-fit capability.
Solution Approach 2:
The interface transitions from a static, user-specific design to a dynamic, universally adaptable design. The pneumatic chambers allow the same physical interface to reconfigure itself for different facial geometries, eliminating the need for multiple custom-manufactured versions.
4Adaptability or versatility
If the pneumatic chambers are continuously actuatable, then the fit can be dynamically optimized, but energy consumption increases
Solution Approach 1:
The pneumatic chambers are actuatable in a periodic or on-demand manner rather than continuously. The system can cycle through adjustment phases or respond to detected facial changes (such as fatigue or temperature), maintaining dynamic adaptation capability while significantly reducing energy consumption compared to continuous actuation.
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
The device provides enhanced comfort and reduces user fatigue by dynamically adapting to individual facial profiles, minimizing pressure points and improving fit over extended wear times.
Implementation Method 1
a pneumatic chamber configured to span a forehead region, a zygoma region, and a maxilla region of a human face
Implementation Method 2
the head-mountable device further includes a fan to push air through the facial interface
Data Source
AI summary
A head-mountable device can include: a display portion including a display; a pneumatic facial interface; and a securement assembly connectable to the display portion. In some examples, the securement assembly includes: a removable strap comprising an electronics pod; and a retention band connectable to the removable strap.