Passive driving type two-freedom degree artificial finger for disabled person

Abstract

The invention provides a passively driven type artificial finger used for two degrees of freedom disabled people, which relates to the artificial finger for disabled people. The artificial finger solves the problem that the artificial finger which is applicable to a base finger knuckle residual patient and can be passively driven by two degrees of freedom disabled people does not exist at present. The front end of a link spring support is in rotating connection with a substrate; one end of an upper connecting rod of the base finger knuckle and one end of a lower connecting rod of the base finger knuckle are connected with the substrate; the other end of the upper connecting rod of the base finger knuckle is fixedly connected with the middle part of an upper stop lever of the base finger knuckle; the other end of the lower connecting rod of the base finger knuckle is fixedly connected with the middle part of a lower stop lever of the base finger knuckle; one end of the upper stop leverof the base finger knuckle is fixedly connected with one end of an upper wire stop; one end of the lower stop lever of the base finger knuckle is fixedly connected with one end of a lower wire stop; and the other end of the upper stop lever of the base finger knuckle and the other end of the lower stop lever of the base finger knuckle are connected with a middle finger knuckle framework respectively. The artificial finger realizes three-dimensional motion of the artificial finger in the passively driven mode in two degrees of freedom, namely stretching and laterally swinging, without external power drive, and has the advantages of simple and rapid assembly and personated motion mode.

Description

Passive-driven two-degree-of-freedom artificial finger for the handicapped technical field The invention relates to a prosthetic finger for a disabled person, in particular to a prosthetic finger for a disabled person driven by a residual finger. Background technique Functional prosthetic hands are prosthetics that can achieve hand-like movement. Most of the functional prosthetic hands for the disabled are powered by external power drives, and the power sources involve electric, pneumatic and hydraulic drives. Due to the need to integrate the power source into the prosthetic hand, the prosthetic hand is too bulky and is only suitable for the handicapped with full palms. The narrow application area cannot meet the needs, and the application range is limited. At present, the relatively successful commercial functional prosthetic hands require the handicapped to be completely disabled, and even the remaining length of the forearm is not required to be too long. According to ...

AI Technical Summary

Problems solved by technology

In order to solve the problem that there is no artificial finger suitable for patients with residual base knuckles that can passively drive the two-degree-of-freedom disabled person, the present invention further provides a passive-driven two-degree-of-freedom artificial finger for the disabled, which can use the remaining base Knuckle actuation to achieve extension and lateral swing of prosthetic finger (two degrees of freedom)

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