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A Wearable Virtual Chair with the Passive Stability Assist
Summary
This study presents a wearable swinging chair device for legs, enabling stable seating anywhere. Its unique CAM-drive mechanism ensures controlled, concave swing motions for enhanced user experience and stability.
Area of Science:
- Wearable robotics
- Biomechanics
- Mechanical engineering
Background:
- Traditional seating is location-dependent.
- Existing wearable devices lack dynamic stability for seating.
- Need for portable, stable seating solutions.
Purpose of the Study:
- Introduce a novel wearable device mimicking a swinging chair.
- Enable users to experience stable swing motion anywhere.
- Ensure stability during dynamic movements.
Main Methods:
- Design of a leg-worn device with a CAM-drive mechanism.
- Integration of ankle and knee joint coupling via wires.
- Stability analysis using computer-aided stress simulation.
- Experimental verification of device functionality and payload.
Main Results:
- The device provides a stable, concave swing motion.
- Ankle joint motion drives knee joint rotation for controlled movement.
- Verified payload capacity exceeding 70 kg through simulation and experiments.
- Distinction between stable swing (chair mode) and passive gait (normal mode).
Conclusions:
- The wearable swinging chair device offers a novel solution for portable, stable seating.
- The CAM-drive mechanism is key to achieving controlled, stable swing motions.
- The device demonstrates significant payload capacity and functional stability.
