Bionic hand with five fingers based on nickel-titanium memory alloy

A nickel-titanium memory alloy and bionic technology, applied in the direction of artificial arms, etc., can solve the problems of simplicity, high cost of smart hands, and difficulty in popularization, and achieve the effects of improving grip, preventing objects from falling, and simple structure

Inactive Publication Date: 2015-12-30
国家康复辅具研究中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a bionic five-fingered prosthetic hand based on nickel-titanium memory alloy material. Aiming at the problems that the traditional prosthetic hand is too simple, the cost of smart hands is hig

Method used

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  • Bionic hand with five fingers based on nickel-titanium memory alloy
  • Bionic hand with five fingers based on nickel-titanium memory alloy
  • Bionic hand with five fingers based on nickel-titanium memory alloy

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Embodiment Construction

[0022] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings.

[0023] Such as Figure 1-2 As shown, the bionic five-fingered prosthetic hand based on nickel-titanium memory alloy material disclosed by the present invention includes five fingers (thumb 1, index finger 2, middle finger 3, ring finger 4, little finger 5), a hollow palm and a driving device accommodated in the palm. device, each finger is made of nickel-titanium memory alloy through partial processing. In this way, the five fingers are installed on the palm body through the finger pin shaft, and the rotation axis of the finger pin shaft is perpendicular to the palm surface of the palm; each finger is equipped with a pull wire for pulling the finger action, and the driving device controls the corresponding finger through the corresponding pull wire. Finger flexion and extension, lateral close together, rotation and other movements.

[0024]...

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Abstract

The invention provides a bionic hand with five fingers based on a nickel-titanium memory alloy. The bionic hand comprises fingers, a palm, inter-finger springs (15, 14, 13), finger pin shafts, a thumb rotary shaft, a torsional spring and a driving device, and is characterized in that the fingers comprise a thumb (1), an index finger (2), a middle finger (3), a third finger (4), a little finger (5) and guiding columns; each of the thumb (1), the index finger (2), the middle finger (3), the third finger (4) and the little finger (5) is formed by integrally processing a single nickel-titanium alloy material; each guiding column is provided with a through hole; the palm comprises a palm box cover (6) and a palm box (7); the driving device comprises a thumb flexion-extension motor (8), a thumb rotation motor (9), an index finger motor (11), a composite motor (12), an index finger rope wheel (34), a composite rope wheel (35), a rotary rope wheel (36), a flexion-extension rope wheel (37) and pull wires. The bionic hand with the five fingers provided by the invention has the advantages that a plurality of typical operations, such as column gripping, fingertip gripping, palm center pinching, sphere gripping and side gripping, can be realized, and the bionic hand with the five fingers is suitable for popularization and application of upper-limb amputees.

Description

technical field [0001] The invention belongs to the technical field of medical rehabilitation aids, in particular to a five-finger prosthetic hand mechanism. Background technique [0002] Prosthetic hands can be divided into dexterous hands and prosthetic hands according to their use. Dexterous hand generally refers to a kind of instrumental prosthetic hand used on humanoid robots or other robot bodies. It is a mechanical prosthetic hand that can realize humanoid operations in special environments, such as the DLR series of prosthetic hands developed by the German Aerospace Center and Harbin Institute of Technology. The developed HTI series prosthetic hands are relatively complex in structure and control, have multiple degrees of freedom, and are expensive. Prosthetic hand is a kind of rehabilitation aid for patients with upper limb amputation, especially disabled patients with missing hands, to realize hand function compensation. For example, the myoelectric prosthetic han...

Claims

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Application Information

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IPC IPC(8): A61F2/54
Inventor 张秀峰李剑刘颖
Owner 国家康复辅具研究中心
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