A wearable power-assisted device based on twisted-pair wire-driven stretchable flexible ankle joint

Abstract

The invention provides a stretched flexible ankle wearable power-assisted device driven by twisted pair, which includes a foot support plate, a flexible joint made of soft materials and rigid components, an ankle wearable component connected with the flexible joint, and a driving ankle joint. The twisted wire driving part of the movement, the flexible joint is composed of a limit rod fully encapsulated in the soft material and a rigid connector partially encapsulated in the soft material, while the twisted wire driving part is composed of a motor, a gear transmission system, and a twisted pair. The ankle joint power-assisted mechanism drives two thin wires to twist each other through the motor, and twists them into a double helix structure in advance. Through the degree of tightness of the twist, it can realize stretching and relaxation similar to muscles, and then assist the wearer to walk. The special flexible joint can realize free movement in the directions of dorsiflexion, plantarflexion and internal rotation and external rotation. A motor drives the twisted-pair structure on both sides to achieve bilateral stretching and relaxation functions at the same time, and can provide safety for the ankle joint. Protective function.

Description

technical field [0001] The invention relates to the field of walking aids, in particular to a stretchable and flexible wearable assisting device driven by a twisted pair. Background technique [0002] The ankle joint is an important joint that connects the legs and feet, and is also a key part that provides support and movement for the body during walking. Since the ankle joint is the most frequently used joint in daily activities, it is more prone to injury than other joints. Existing wearable assistive walking devices can be divided into two categories: active assisting devices and passive assisting devices. Passive assisting devices are mainly composed of various elastic components, which are light in weight, but can only adapt to fixed several gaits. , and the boosting effect is not as obvious as that of the active type, and the introduction of the driver in the active type boosting device leads to an increase in the weight of the overall structure and increases the burd...

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a tensioned flexible ankle wearable booster device driven by twisted pairs. The booster introduces the twisted pair into the ankle booster mechanism to solve the problem of mass and size caused by the need for a large reduction ratio system when driven by a motor. The problem of being too large, with a special flexible joint, can reduce the discomfort caused by misalignment, so as to solve the problems mentioned in the above background technology

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