Passive mechanical artificial limb mechanism controlled by electromagnet

Abstract

The invention provides a passive mechanical artificial limb mechanism controlled by an electromagnet. The mechanism comprises a power mechanism, a transmission mechanism and an executing mechanism, wherein the power mechanism mainly consists of a palm sleeve, a wrist sleeve, a hoop and fastener, an inner lining sleeve and a bull gear; the wrist sleeve is firmly fixed to a wrist through the hoop and fastener; the palm sleeve is fixedly arranged on the rear part of the palm through the inner lining sleeve; the transmission mechanism mainly consists of a pinion, a wire wheel shaft, a wire wheel, a steel wire rope, an electromagnetic coil and a groove; the wire wheel shaft is provided with a plurality of grooves; an electromagnet, a spring and a key are arranged in each groove; the keys are positioned on the side faces of the springs; the electromagnetic coils sleeve the wire wheel shaft; the wire wheel is connected with the steel wire rope; the bull gear is engaged with the pinion; the pinion is connected with the wire wheel shaft; the wire wheel is connected with the wire wheel shaft through the keys; the executing mechanism consists of finger middle parts, a finger root, a fingertip, a torsion spring shaft and a torsion spring; the finger root and the fingertip are connected through the torsion spring shaft; one torsion is arranged between two finger middle parts. The mechanism has a simple structure and is convenient and practical.

Description

technical field [0001] The invention relates to a passive mechanical prosthetic mechanism controlled by an electromagnet. Through the mechanism and its control method, patients can recover part of hand functions. Background technique [0002] In recent years, with the frequent occurrence of domestic traffic accidents and production accidents, there are more and more hand disabled people. According to a sample survey of disabled people, there are currently about 60 million physically disabled people in my country. Among these disabled persons, there are many cases of hand disabilities. The lack of fingers was a great inconvenience to them. With the development of technology, there are more and more prosthetics to help people with hand disabilities. However, most of them are only used for beautiful fixed prostheses, and other hand-assisted fingers that can restore partial hand functions are driven by external forces, such as motor drives and cylinder drives. Prosthetic con...

AI Technical Summary

Problems solved by technology

However, most of them are only used for beautiful fixed prostheses, and other hand-assisted fingers that can restore partial hand functions are driven by external forces, such as motor drives and cylinder drives. Prosthetic control system and bulky power supply

Although these prosthetic control systems can control and realize some complex actions relatively speaking, due to the complex design and strict material requirements, the cost is very expensive, the mechanism is bulky, the battery life is low, the force is not large, the waterproof performance is not good, and the reliability is low. and poor applicability

These shortcomings make its practicability not high, and its application is not very extensive.

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