A knee joint passive reconfigurable compliant constant force assisting device

Abstract

A passive reconfigurable compliance constant force assist device for the knee joint, including a first cylinder and a second cylinder. The second cylinder is sleeved on the outside of the first cylinder. The outer surface of the first cylinder is fixedly equipped with a calf support plate. , the outer surface of the second cylinder is fixedly equipped with a thigh support plate, the bottom center of the inner wall of the first cylinder is fixedly equipped with a ratchet shaft, the outer surface of the ratchet shaft is equipped with a rotating sleeve, the rotating sleeve is fixedly connected to the second cylinder, and the outer surface of the rotating sleeve A compliance unit is provided. The compliance unit includes multiple compliance pieces. The multiple compliance pieces are stacked along the axial direction of the ratchet shaft. The compliance piece includes a friction ring and an elastic bracket. The inner wall of the friction ring is fit with the rotating sleeve. The outer surface of the friction ring is circumferential. The array is provided with a plurality of elastic brackets. The inner wall of the first cylinder is fixedly equipped with a plurality of blocks that are adapted to the elastic brackets. The plurality of blocks are arranged in a spiral array along the ratchet axis as the center. The present invention proposes a multi-stage A solution in which compliant sheets are loaded sequentially and the characteristics of the compliant device provide support.

Description

technical field [0001] The invention belongs to the technical field of human body assisting machinery, and in particular relates to a passive, reconfigurable, compliant and constant force assisting device for a knee joint. Background technique [0002] With the development of advanced manufacturing, more convenient and effective human body assisting devices are widely used in people's daily life. As an important load-bearing part of the leg, the knee joint is one of the focuses of human body assist device research, especially with the aging of the population and the changes in the way people live and work in modern cities, knee joint injuries and the resulting lesions and auxiliary The proportion of recovery needs is increasing year by year, and the prevention of knee joint injuries is also more and more valued by people. Therefore, the design and development of knee joint protection and power-assisted devices have attracted extensive attention from domestic and foreign scho...

AI Technical Summary

Problems solved by technology

However, most of the existing knee support devices are active and rigid components, which will inevitably lead to problems such as excessive device mass, poor battery life, complicated electrical circuit layout, and low fault tolerance. Most of the devices use springs to provide support, but it is difficult for springs to meet the range of motion required in the squatting process, and it is difficult to keep the support stable

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