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 lever of 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

Technical field [0001] The invention relates to a fake finger for the disabled, in particular to a fake finger for the disabled driven by the disabled finger. Background technique [0002] Functional prosthetic hands are prosthetic limbs that can achieve motion similar to human hands. Now most of the functional prosthetic hands for the disabled use external power driving methods to provide power. The power source involves electric, pneumatic and hydraulic drives. Due to the need to integrate the power source into the prosthetic hand, the prosthetic hand is too large, which is only suitable for the disabled with all palms. The narrow application area cannot meet the needs, and the application range is limited. At present, the more successful commercial functional prostheses require disabled persons to have full palm disability, and even the remaining length of the forearm is required not to be too long. According to the survey, some finger disabilities also account for a considera...

AI Technical Summary

Problems solved by technology

[0003] 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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