Passive variable-rigidity energy storage assisting hip joint exoskeleton

Abstract

The invention relates to a passive variable-rigidity energy storage assisting hip joint exoskeleton. The passive variable-rigidity energy storage assisting hip joint exoskeleton comprises a waist andback fixing unit, a left thigh fixing unit, a right thigh fixing unit, a left variable-rigidity hip joint and a right variable-rigidity hip joint, wherein each of the left variable-rigidity hip jointand the right variable-rigidity hip joint comprises a cam disc, a joint disc rotationally arranged in the cam disc, a variable-rigidity adjusting mechanism arranged on the joint disc, a pair of springenergy storage mechanisms and a joint output end cover, and the cam discs are connected with the waist and back fixing unit; and the joint output end cover is connected with the left thigh fixing unit or the right thigh fixing unit. Compared with the prior art, energy generated in the walking process of a person is stored through the spring energy storage mechanism and released at a certain timeto achieve the assistance purpose, and meanwhile the overall compression amount of a spring in the spring energy storage mechanism and the position of a joint are adjusted through the variable-rigidity adjusting mechanism so as to adjust the joint output torque in real time; and therefore, the exoskeleton is matched with the hip joint torque of a normal person, and the purpose of variable rigidityis achieved.

Description

technical field [0001] The invention belongs to the technical field of lower extremity exoskeleton, and relates to a passive variable stiffness energy storage assisting hip joint exoskeleton. Background technique [0002] China is a country with a large population. Since 2000, China's population aging has entered a stage of acceleration. As of the end of 2017, China's population over the age of 60 accounted for 17.3% of the total population. According to the forecast of the United Nations, by 2030, the number of people over the age of 60 in China will exceed 300 million, and by 2050 it will climb to about 470 million, and the number of people over 65 will rise from 170 million in 2020 to 360 million. people. Due to the growth of age, the elderly are often accompanied by bone and joint degeneration, weakened muscle strength and other problems. The residual muscle strength of the elderly is not enough to support them to carry out daily activities, resulting in insufficient or...

AI Technical Summary

Problems solved by technology

[0004] Developed countries have entered the rehabilitation industry relatively early and there are many institutions and research institutes engaged in the rehabilitation industry. Many lower limb assist exoskeleton products have now developed from the laboratory research stage to obtaining a license from the Food and Drug Administration and can be on the market. Sales, China, as a developing country, started late in the rehabilitation industry due to a series of reasons. Most of the research on lower limb assisting exoskeletons is in the experimental prototype stage or clinical trial stage, and the products sold to consumers are all foreign products, which are expensive. Seriously restricting the quality of life of Chinese elderly and other people with lower limb motor dysfunction

Images