Force Feedback Module with Nested Transmission for VR/AR Triggers
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Solution Overview
Problem
Current handheld controllers in VR and AR devices lack immersive force feedback when users press buttons or pull triggers.
Innovation Solution
A force feedback module with a trigger element, actuating element, and transmission assembly that allows for the transmission of driving forces to generate immersive feedback through rotation, translation, or vibration, enhancing haptic interactions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a transmission assembly is added to transmit driving force to the trigger element, then force feedback capability is improved, but device complexity increases
Solution Approach 1:
The transmission assembly is nested within the handheld controller structure, with transmission elements integrated into the existing trigger mechanism. The actuating element, transmission elements, and trigger element are arranged in a compact nested configuration that provides force feedback functionality without significantly increasing the external dimensions or overall structural complexity of the controller.
Solution Approach 2:
Transmission elements serve as intermediaries between the actuating element and the trigger element, transferring driving force through a controlled mechanical pathway. This intermediary mechanism enables precise force feedback transmission while maintaining structural organization and manageable complexity through defined force transmission paths.
2Ease of operation
If force feedback mechanism is integrated into handheld controller, then user interaction quality is improved, but weight of controller increases
Solution Approach 1:
The force feedback mechanism is implemented locally at the trigger element position rather than throughout the entire controller. The actuating element and transmission assembly are concentrated in the region where force feedback is needed, providing localized haptic enhancement without distributing additional weight across the whole controller structure.
Solution Approach 2:
The system enables dynamic adjustment of force feedback parameters including vibration frequency, amplitude, and duration through the actuating element. This allows the controller to provide varied haptic experiences for different interaction scenarios without requiring multiple physical mechanisms, thereby managing weight while maintaining operational quality.
Data Source
AI summary
A force feedback module is provided. The force feedback module includes a trigger element, an actuating element, and a transmission assembly disposed between the trigger element and the actuating element. The transmission assembly includes a first transmission element. The first transmission element and the trigger element change between a contact state and a non-contact state. When the first transmission element and the trigger element are in the contact state, a driving force generated by the actuating element is transmitted to the trigger element via the transmission assembly to generate force feedback.