Needle valve type double-oil-way coupling adjusting damping cylinder for intelligent knee joint artificial limb

A coupling adjustment and knee joint technology, applied in the field of damping cylinders, can solve the problems of large axial load, unsmooth rotation and large damping of the motor, and achieve the effects of continuous damping adjustment, reduced power consumption and light weight

Active Publication Date: 2021-09-28
UNIV OF SHANGHAI FOR SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In an electro-hydraulic damping cylinder structure for intelligent knee joint prosthesis, the shafts of the motor, regulating valve body and piston are in a straight line and are connected or contacted with each other, so that the axial load on the motor during the operation of the knee joint is very small. Large, it is easy to lose the cloth and fail to reach the designated position during the adjustment process, which seriously affects the performance of knee joint damping adjustment
In a semi-actuated prosthetic knee device, the actuation and non-actuation modes are realized by hydraulic cylinders and damping adjustment valves, bu

Method used

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  • Needle valve type double-oil-way coupling adjusting damping cylinder for intelligent knee joint artificial limb
  • Needle valve type double-oil-way coupling adjusting damping cylinder for intelligent knee joint artificial limb
  • Needle valve type double-oil-way coupling adjusting damping cylinder for intelligent knee joint artificial limb

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Embodiment Construction

[0035] The following describes several preferred embodiments of the present invention with reference to the accompanying drawings, so as to make the technical content clearer and easier to understand. The present invention can be embodied in many different forms of embodiments, and the protection scope of the present invention is not limited to the embodiments mentioned herein.

[0036] In the drawings, components with the same structure are denoted by the same numerals, and components with similar structures or functions are denoted by similar numerals. The size and thickness of each component shown in the drawings are shown arbitrarily, and the present invention does not limit the size and thickness of each component. In order to make the illustration clearer, the thickness of parts is appropriately exaggerated in some places in the drawings.

[0037] Such as figure 1 Shown is a schematic diagram of the appearance of the needle-valve type double-oil-circuit coupling-adjust...

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Abstract

The invention discloses a needle valve type double-oil-way coupling adjusting damping cylinder for an intelligent knee joint artificial limb, and relates to the technical field of damping cylinders. The needle valve type double-oil-way coupling adjusting damping cylinder comprises a cylinder part, a flow adjusting module and a motor fixing module, two needle type valve bodies are arranged in the flow adjusting module, and control and transmission are conducted through a linear motor of the motor fixing module. According to the damping cylinder, the linear motor is used for controlling the vertical movement of the two needle type valve bodies at the same time so that two-way independent control and continuous damping adjustment of knee joint hydraulic damping are achieved only through one motor, the whole mechanism is small in size and light in weight, power consumption is reduced, and the whole mechanism is exquisite and easy to machine.

Description

technical field [0001] The invention relates to the technical field of damping cylinders, in particular to a needle-valve type dual-oil-circuit coupling-adjusting damping cylinder for intelligent knee joint prostheses. Background technique [0002] The smart knee joint refers to controlling the damper of the knee joint through a microcomputer to control the speed of the swing phase and the stability of the support phase at the same time, so that the gait of a lower limb patient is closer to that of a healthy person when wearing a prosthesis, with higher following and symmetry . At present, the ways to adjust damping in smart knee joints mainly include magnetorheological, pneumatic and hydraulic. The magnetorheological smart knee joint adjusts the damping effect by changing the current to change the magnetic field strength, but the viscosity change of the magnetorheological fluid is closely related to the magnetic field, and it has high requirements on the material of the ma...

Claims

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Application Information

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IPC IPC(8): F16F13/00F16F9/19F16F9/32F16F9/46F16F9/34A61F2/64
CPCF16F13/007F16F9/19F16F9/182F16F9/3235F16F9/3228F16F9/466F16F9/34A61F2/64F16F2230/18A61F2002/5006A61F2002/5033
Inventor 喻洪流张哲文孟巧玲曹武警汪晓铭孙金悦洪迎盈
Owner UNIV OF SHANGHAI FOR SCI & TECH
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