Back-of-Hand XR Grasp Controller with Adjustable Legs
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Solution Overview
Problem
Conventional VR systems with gloves are cumbersome, uncomfortable, and limit finger mobility, making it difficult for users to interact with virtual objects and provide effective control inputs.
Innovation Solution
A grasp controller designed to be worn on the back of the hand, allowing fingers to remain free, with biometric sensors and haptic feedback, and adjustable legs that can fit any hand size, providing optimal sensor positioning and comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If VR gloves are used to provide control inputs, then control functionality is achieved, but finger mobility and comfort deteriorate
Solution Approach 1:
The patent extracts the control functionality from the fingers themselves and relocates it to a separate controller worn on the back of the hand. The fingers remain free and uncovered, while the controller contains sensors and actuators that detect hand movements and provide haptic feedback, thus maintaining finger mobility while achieving control functionality.
2Ease of operation
If VR gloves are used to provide control inputs, then control functionality is achieved, but comfort deteriorates due to heat and sweat accumulation
Solution Approach 1:
The controller design removes the enclosing structure of gloves, extracting only the essential control sensing and feedback functions. This open design allows heat dissipation and prevents sweat accumulation while maintaining control capabilities through sensors on the back of the hand.
3Measurement precision
If fixed-size controllers are manufactured to provide precise control, then control precision is improved, but adaptability to different hand sizes deteriorates
Solution Approach 1:
The controller incorporates adjustable legs that can be positioned at different lengths to accommodate various hand sizes. This dynamic adjustment capability allows the same controller design to adapt to different users while maintaining precise control functionality through proper sensor positioning.
Solution Approach 2:
The controller design achieves universality by making the leg positioning adjustable rather than fixed. A single controller model can serve multiple hand sizes through the adjustable leg mechanism, eliminating the need for multiple fixed-size variants while maintaining control precision for each user.
4Measurement precision
If biometric sensors are positioned for optimal data collection, then measurement precision is improved, but device complexity increases due to positioning requirements
Solution Approach 1:
The adjustable leg positioning system dynamically adapts sensor locations to optimal positions for different hand sizes. This ensures biometric sensors consistently contact the palm at the correct location regardless of user anatomy, maintaining measurement precision without requiring complex customized positioning for each user.
Data Source
AI summary
In example implementations, an apparatus is provided. The apparatus includes a body portion and a plurality of legs movably coupled to the body portion. The body portion is to rest on a backside of a hand of a user. Each one of the plurality of legs include a curved portion to fit between fingers of a user. Respective ends of the plurality of legs are to contact a palm of the user.