Wheelchair-integrated lower limb exercise/rehabilitation device

Wheelchair-integrated lower limb exercise and rehabilitation device combining a four-bar linkage lift and an exoskeleton

This technology is a wheelchair-integrated lower limb exercise and rehabilitation device that combines a driving unit equipped with a drive motor and wheels, a lift unit that moves in a quadrant path via a four-bar linkage, and an exoskeleton worn on the user's lower body.

Existing wheelchair-based exercise and rehabilitation systems have been limited by safety issues during lifting, inefficient mechanisms, and restricted control over weight-bearing support.

This technology proposes a configuration where the main lift linkage and the lift frame work together to move stably along a quadrant path. It can be applied to lower limb rehabilitation for people with disabilities and the elderly, safely assisting with standing and sitting while providing the mobility of a wheelchair to significantly improve the user's quality of life.

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Key Features:

• A driving unit comprising a frame, a drive motor, left and right wheels driven by the drive motor, and a main lift motor
• A main lift linkage rotatably coupled to the frame in a four-bar linkage configuration and powered by the main lift motor
• A lift frame rotatably coupled to the main lift linkage, designed to ascend or descend along a quadrant path
• A linkage configuration that unfolds when the lift frame ascends and folds when it descends