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Gear train type under-actuated bionic artificial limb finger

An underactuated and finger technology, which is applied in the field of gear train underactuated bionic prosthetic fingers, can solve the problems of inability to achieve independent movement, etc.

Pending Publication Date: 2019-04-26
王宇光
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Three motors are used to control the movement of five fingers, among which the index finger and middle finger are controlled by one motor, the ring finger and little finger are controlled by one motor, and the thumb is controlled by one motor, and the independent movement of each finger cannot be realized.

Method used

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  • Gear train type under-actuated bionic artificial limb finger
  • Gear train type under-actuated bionic artificial limb finger
  • Gear train type under-actuated bionic artificial limb finger

Examples

Experimental program
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Embodiment Construction

[0023] The present invention will be further described below in conjunction with accompanying drawing.

[0024] The present invention provides a gear train type underactuated bionic prosthetic finger such as figure 1 As shown, the finger is composed of a finger body and a finger mechanical transmission chain; the finger body is composed of the first knuckle frame 13 connected to the far end of the finger base frame 3 through the second shaft 9, and can be formed around the second shaft 9. Turning motion forms the first joint of the finger. The first knuckle shell 10 is connected to the first knuckle frame 13 through the second shaft 9 and the third shaft 11, and is fixed relative to the first knuckle frame 13; The two-knuckle frame 19 is connected to the far-end of the first phalanx frame 13 by the fourth shaft 15, and can rotate relative to the far-end of the first phalanx frame 13 to form the second joint of the finger. The knuckle housing 16 is connected to the second knuc...

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PUM

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Abstract

The invention discloses a gear train type under-actuated bionic artificial limb finger. A finger body part comprises a finger base frame, a first knuckle rack, a first finger knuckle shell, a second finger knuckle rack, a second finger knuckle shell and a third finger knuckle; a mechanical transmission chain comprises a micro motor, a micro speed reducer assembly, a bevel gear pair and a spur gearpair; movement is divided into two branched chains after the mechanical finger transmission chain is transmitted to a fourth spur gear, movement of a second joint can be realized by one branched chain, movement of a first joint can be realized by the other branched chain, movement of the two knuckles is coupled, and an under-actuated movement mode is formed. The gear train type under-actuated bionic artificial limb finger disclosed by the invention is in modular structure design, assembling and disassembling of the whole finger can be convenient, the finger structure is simple, the weight islight, and the thickness size of a palm is reduced due to the design of the finger.

Description

technical field [0001] The invention belongs to the field of medical rehabilitation equipment, in particular to a gear train type underactuated bionic artificial limb finger. Background technique [0002] The prosthetic hand is installed on the end of the residual limb of the disabled to realize certain functions of the human hand. The Suva single-freedom prosthetic hand of Germany's OttoBock Company is driven by a micro-motor. This kind of prosthetic hand only has simple opening and closing functions, and cannot realize complex action patterns. Modern prosthetic hands have multiple degrees of freedom, and generally have five fingers. Among them, the index finger, middle finger, ring finger and little finger have the same mechanical structure and are collectively referred to as fingers. Each finger has two joints. The first joint is an active joint, and the second joint It is a driven joint, the motion of the two joints is coupled, and each finger is driven by a micro motor...

Claims

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Application Information

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IPC IPC(8): A61F2/58A61F2/70
CPCA61F2/586A61F2002/701A61F2002/5083
Inventor 王宇光
Owner 王宇光
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