Electric control hydraulic damping cylinder structure for intelligent knee joint

An electronically controlled hydraulic, knee joint technology, applied in medical science, prosthesis, etc., can solve the problems of many connecting rods, difficult to process and manufacture, complicated holes, etc., and achieve the structure weight reduction, power consumption reduction, continuous damping adjustment Effect

Active Publication Date: 2016-07-20
上海理工资产经营有限公司
View PDF10 Cites 44 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this structure uses a middle fixed block, and the pistons on both sides move, making the volume larger
Mor

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Electric control hydraulic damping cylinder structure for intelligent knee joint
  • Electric control hydraulic damping cylinder structure for intelligent knee joint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0020] Such as figure 1 As shown, the present invention provides an electronically controlled hydraulic damping cylinder structure for intelligent knee joints, which includes an upper piston part 2 with a hollow piston rod and an upper piston block 11 with a hole, placed on the upper piston part 2 The upward-opening check valve 9 and the downward-opening check valve 4 in the hole of the upper piston block 11 are placed in the hollow piston rod of the piston part 2 and are directly connected to the upper stepping motor 1 through the valve core rod. shaped valve plate 10, the lower piston part 6 with the lower piston rod and the lower piston block 12 with holes, the cylinder body 5 of the opening, the cylinder cover 3 connected to the opening of the cylinder body, the spring case connected with the lower end of the cylinder body 5 8, the spring 7 placed in the spring ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to an electric control hydraulic damping cylinder structure for an intelligent knee joint. The electric control hydraulic damping cylinder structure is characterized in that an upper piston is provided with a hollow piston rod and an upper piston block, the upper piston block is positioned at the lower end of the hollow piston rod, two hydraulic oil channels of upper and lower chambers are arranged on the upper piston block, and check valves with opposite flow shutting directions are respectively arranged in the two hydraulic oil channels of the upper and lower chambers; a lower piston is provided with a lower piston rod and a lower piston block, the lower piston block is positioned at the upper end of the lower piston rod, two fan-shaped holes which are used as hydraulic oil channels of upper and lower chambers are formed in the lower piston block, the upper piston block and the lower piston block are connected with each other in a cylinder block, and a butterfly valve plate is arranged between the upper piston block and the lower piston block, is connected with a stepper motor by a valve element stem in the hollow piston rod and can rotate under the control of the stepper motor, so that the flow passage areas of the hydraulic oil channels of the upper and lower chambers in the lower piston block can be changed, and the flow rates of the upper and lower chambers of a hydraulic cylinder can be changed. The electric control hydraulic damping cylinder structure has the advantage that bending and stretching damping of the prosthetic knee joint can be bidirectionally independently controlled by the single motor.

Description

technical field [0001] The invention relates to a hydraulic damping cylinder structure for a prosthetic knee joint, in particular to an electronically controlled hydraulic damping cylinder structure for an intelligent knee joint. Background technique [0002] Smart knee joints refer to knee joint prostheses that use microprocessors to control damping, and the adjustment of knee joint damping mainly includes hydraulic pressure, air pressure, and magnetorheology. Both hydraulic and pneumatic intelligent knee joints use microprocessors to drive motors to adjust the opening of the valve inside the damping cylinder to adjust the damping; magnetorheological intelligent knee joints change the strength of the magnetic field by changing the magnitude of the current to make the magnetic current The viscosity of the variable fluid changes, thereby adjusting the damping. The hydraulic knee joint can provide a large torque in the support phase, but the flexibility is not very high in th...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): A61F2/70A61F2/74
CPCA61F2/68A61F2002/701A61F2/74A61F2/741A61F2/748
Inventor 曹武警赵伟亮李瑨王振平喻洪流孟巧玲
Owner 上海理工资产经营有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap