Lower limb support device and method of operation

Lower limb support device with joint rotation locking via cylinder and linear motor

This technology is a mechanical mechanism that supports the rotation of lower limb joints by combining a cylinder and piston structure with upper and lower braces. It selectively locks the wearer's posture by using a linear motor to mechanically constrain the linear motion of the piston or by blocking the hydraulic flow path.

Conventional lower limb support devices are complex and expensive, and they often fail to provide sufficient support during joint rotation, leading to muscle fatigue for users who work while standing.

This technology connects the upper and lower braces installed on both sides of the lower limb joint with a cylinder-piston device. It uses a linear motor to physically block piston movement or regulate the flow of fluid inside the cylinder to lock the joint angle. Posture locking and unlocking are automatically controlled based on data from motion and pressure sensors.

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Key Features:

• Upper brace with a detachable structure positioned above the lower limb joint to provide support
• Lower brace with a detachable structure positioned below the lower limb joint to provide support
• Cylinder and piston connected to the sides that move vertically when the upper and lower braces rotate
• Posture locking unit equipped with a linear motor that blocks piston movement to selectively stop brace rotation

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