Lower limb rehabilitation walking aid device and working method thereof

Abstract

The invention relates to a lower limb rehabilitation walking aid device, comprising two variable stiffness elastic joints which are distributed vertically and vertically, wherein the each variable stiffness elastic joint includes a housing; a spindle spring sleeve is arranged in the house; an incomplete gear with a peripherally not uniformly distributed with teeth is disposed at the right side ofthe spindle spring sleeve; a scroll spring A is arranged on the spindle spring sleeve, and a driven shaft spring sleeve is arranged below the spindle spring sleeve; a driven gear is arranged on the right side of the driven shaft spring sleeve; the teeth of the driven gear can be meshed with the teeth of the incomplete gear; and a scroll spring B is arranged on the spindle spring sleeve. The invention also relates to a working method of the lower limb rehabilitation walking aid device. The lower limb rehabilitation walking aid device can make the patient carry out the assisting force when the lower limb recovers to walk, can avoid the patient's thigh dropping and the knee joint stretching too fast in the descending process of the leg, thus causing injury to the patient, can carry out the assisting force to the leg in the lifting process of the leg, and simultaneously can avoid the lifting range of the leg of the patient being too large.

Description

technical field [0001] The invention relates to a walking aid device for rehabilitation of lower limbs and a working method thereof. technical background [0002] Lower limb walking exoskeleton has always been a research hotspot, which is mainly used for rehabilitation training of human lower limbs and improving the load capacity of human body. The lower extremity walking exoskeleton is worn on the human body and synchronized with the movement of the human body, detects the movement information of the human body during the movement and then provides driving force, thereby reducing the walking burden of the wearer, so as to achieve a larger load or a longer period of time for the wearer. purpose of walking. [0003] The lower limb walking exoskeleton is mainly divided into the lower limb walking exoskeleton driven by external power and the lower limb walking exoskeleton without power. Existing exoskeletons driven by external power can be divided into three categories accord...

AI Technical Summary

Problems solved by technology

For electric energy storage components, the first consideration is the selection of the motor, and the size of the existing motors that meet the purpose of exercise is relatively large, which causes a great burden on the wearer.

The energy storage element is a hydraulic lower extremity walking exoskeleton, and its precision requirements are relatively high, resulting in a substantial increase in its design and manufacturing costs, which is not conducive to large-scale promotion

The lower extremity walking exoskeleton whose energy storage element is air pressure is not stable, and its practicality is not high

The existing non-powered lower limb walking exoskeleton mainly uses the length change of the compression spring to realize the energy transmission, the range of change is small, and the working mode is single

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