Passive knee assist system and method

Abstract

The invention relates to a passive knee joint assisting system and method. The assisting system includes: a thigh support, used for binding the human thigh; a calf support, used for binding the human calf; an energy storage device, the energy storage device is used In order to store energy when the knee joint is bent, and release energy to assist the calf stretch when the calf is stretched, the top of the energy storage device is fixedly connected to the thigh support, and the center of the energy storage device is connected to the shaft of the calf support, so that all The calf support can rotate relative to the energy storage device; the foot support is connected to the bottom of the calf support and is used to support human feet.

Description

technical field [0001] The invention relates to a knee assist system and method, in particular to a passive knee assist system and method, and belongs to the technical field of exoskeleton robots and mechatronics. Background technique [0002] The research on the power assist system began in the late 1960s, and was mainly carried out in some developed countries such as Europe and the United States. The original purpose was to enhance the ability of the human body to bear and carry loads. By the end of the 1990s, with the improvement of science and technology, the related sensor technology, drive technology and energy development became more and more mature, and the research on power assist system developed rapidly. The booster system can show a good application prospect in the military field. The booster system can be used as a subsystem in various fields, such as earthquake rescue systems, individual combat systems, and polar scientific research systems. In individual com...

AI Technical Summary

Problems solved by technology

[0003] The prior art discloses an intelligent wearable knee booster, whose mechanical structure includes a thigh rod, a calf rod, an acceleration sensor, a harmonic gear reducer and a DC motor. The structure is characterized by the ability to quickly and accurately identify human body movements The intention is to apply the correct boost to the human body in a timely and accurate manner, and reduce the burden on the knee joint when the human body is moving. However, because the booster needs a motor, it is relatively bulky and the design cost is relatively high.

The prior art also discloses a rigid-flexible coupling bionic exoskeleton knee joint assist device, which is composed of a thigh assembly, a calf assembly and a transmission assembly. The device is characterized by rigid-flexible coupling, high man-machine compatibility and bionics with multiple degrees of freedom, and It can realize the assisting needs of different rehabilitation stages, but its structure and operation are cumbersome, and the assisting effect is not obvious

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