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Motor built-in type modularized prosthetic finger with self-locking function

A built-in, modular technology, applied in the direction of prosthesis, medical science, artificial arm, etc., can solve the problems that a single finger cannot be controlled independently, does not have self-locking function, and the degree of modularization is not high, and achieves active loading of fingertips and Large passive bearing capacity, convenient disassembly and maintenance, and high efficiency

Active Publication Date: 2014-04-09
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of the existing artificial finger transmission mechanism being complicated, the degree of modularization is not high, a single finger cannot be independently controlled, and the battery life is short due to the lack of self-locking function, the invention further proposes a built-in motor with self-locking function modularization fake finger

Method used

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  • Motor built-in type modularized prosthetic finger with self-locking function
  • Motor built-in type modularized prosthetic finger with self-locking function
  • Motor built-in type modularized prosthetic finger with self-locking function

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specific Embodiment approach 1

[0008] Specific implementation mode one: combine Figure 1 to Figure 5 Describe this embodiment, the motor-built-in modular artificial finger with self-locking function described in this embodiment includes a proximal knuckle and a distal knuckle, and the proximal knuckle includes a motor 1, a reducer 2, a proximal knuckle shell 3, The rotating frame 4, the worm 5, the worm shaft 8, the end cover 9, the worm wheel 12, the first joint wire wheel, the base joint shaft 15, the base joint base 17 and the pressure plate 20, the speed reducer 2 is fixedly installed on the rotating frame 4 , the proximal knuckle shell 3 is installed on the rotating frame 4, the output shaft of the motor 1 is connected to one end of the worm 5 through the reducer 2, the other end of the worm 5 is connected to the end cover 9 through the worm shaft 8, and the base joint base 17 is passed through The base joint shaft 15 is connected with the rotating frame 4, the worm gear 12 is sleeved on the base join...

specific Embodiment approach 2

[0010] Specific implementation mode two: combination figure 2 Describe this embodiment, the proximal knuckle of the motor-built-in modular prosthetic finger with self-locking function described in this embodiment also includes a worm washer 6 and a plastic sleeve 7, and one end of the worm 5 passes through the worm washer 6 and the plastic sleeve The barrel 7 is connected to the output shaft of the speed reducer 2 .

[0011] The technical effect of this embodiment is: such an arrangement can effectively bear the axial force of the worm, and by optimizing the material of the worm washer 6, the coefficient of friction between it and the plastic sleeve 7 can be reduced, thereby reducing friction loss. The worm spacer 6 and the plastic sleeve 7 can also be replaced by thrust bearings, so that no friction loss can be guaranteed, but the size is slightly larger. Other components and connections are the same as those in the first embodiment.

specific Embodiment approach 3

[0012] Specific implementation mode three: combination figure 2 To illustrate this embodiment, an adjusting gasket 10 is provided between the rotating frame 4 and the end cover 9 of the motor built-in modular prosthetic finger with self-locking function in this embodiment.

[0013] The technical effect of this embodiment is: so arranged, the gasket 10 is used to adjust the degree to which the worm screw 5 compresses the plastic sleeve 7; the worm washer 6 and the plastic sleeve 7 of the worm 5 shafting part can also be replaced by thrust bearings, To resist the axial force of the worm 5. Other components and connections are the same as those in the first embodiment.

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Abstract

The invention relates to a modularized prosthetic finger, in particular to a motor built-in type modularized prosthetic finger with a self-locking function. The problems that an existing prosthetic finger is complex in transmission mechanism and not high in modularization degree, a single finger body cannot be independently controlled, the self-locking function is not achieved, and the endurance time of the existing prosthetic finger is short are solved. A near knuckle shell is arranged on a rotary frame, the other end of a worm is connected with an end cover through a worm shaft, a base joint base is connected with the rotary frame through a base joint shaft, the base joint shaft is sleeved with a worm gear, the worm gear is meshed with the worm, a first joint steel wire wheel is arranged on a boss on the side face of the worm gear in a sleeved mode, a second joint steel wire wheel is arranged on a circular table on the inner side wall of a fingertip lower cover plate in a sleeved mode, a fingertip upper cover plate and a fingertip circuit board are arranged on the fingertip lower cover plate through double-screw bolts, and one end of a steel wire is fixed to the base joint base through a wire pressing plate. The motor built-in type modularized prosthetic finger belongs to the field of robots.

Description

technical field [0001] The invention relates to a modular artificial finger, in particular to a motor built-in modular artificial finger with a self-locking function. Background technique [0002] Hands are an extension of human consciousness and play an important role in daily life. As a substitute for natural human hands, prosthetic hands need to have the functions of manipulating objects, sensing the external environment and having the same shape as human hands. However, limited by the development of drivers and sensors, it is still difficult for prosthetic hands to reach a high level in terms of size, weight, appearance, dexterity, envelopment, and perception. Therefore, how to improve the function of the prosthetic hand on the basis of making the prosthetic hand have a highly anthropomorphic appearance has always been an important topic in the field of prosthetic hand research. [0003] The development of artificial hands will eventually be user-oriented, therefore, t...

Claims

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Application Information

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IPC IPC(8): A61F2/54A61F2/70
Inventor 樊绍巍曾博杨大鹏张庭姜力刘宏
Owner HARBIN INST OF TECH
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