CN219557684U - Multi-shaft buffering ground-contacting pneumatic knee joint - Google Patents
Multi-shaft buffering ground-contacting pneumatic knee joint Download PDFInfo
- Publication number
- CN219557684U CN219557684U CN202320483463.2U CN202320483463U CN219557684U CN 219557684 U CN219557684 U CN 219557684U CN 202320483463 U CN202320483463 U CN 202320483463U CN 219557684 U CN219557684 U CN 219557684U
- Authority
- CN
- China
- Prior art keywords
- connecting rod
- cylinder body
- rod
- bracket cylinder
- auxiliary
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/40—Weight reduction
Landscapes
- Prostheses (AREA)
Abstract
The utility model provides a multiaxial cushion ground-contacting pneumatic knee joint, comprising: the device comprises an upper connecting rod, a cylinder component, a side connecting rod, a bent connecting rod, a secondary connecting rod and a middle connecting rod; the cylinder component comprises a bracket cylinder body, a piston rod assembly, an extension assisting spring and a bidirectional flow regulating valve; the piston rod assembly stretches out under the action of the stretching-assisting spring, and the bidirectional flow regulating valve can regulate the movement speed of the piston rod assembly; the side connecting rods are used for connecting the upper connecting rods and the bracket cylinder body, and the upper connecting rods are movably connected with the bracket cylinder body through two symmetrically arranged side connecting rods; the bent connecting rod is used for transmission between the piston rod and the upper connecting rod; the auxiliary connecting rod and the middle connecting rod are used for buffering hard landing of the artificial limb, wherein the auxiliary connecting rod is hinged to the upper end of the bracket cylinder body, and two ends of the middle connecting rod are respectively hinged to the rear end of the upper connecting rod and the auxiliary connecting rod; through the cooperation between upper connecting rod, auxiliary connecting rod, well connecting rod, support cylinder body and the side connecting rod, the impact that receives when effectively having buffered the artificial limb and having grounded has improved user experience.
Description
Technical Field
The utility model relates to the artificial limb industry, in particular to a multiaxial buffering ground-contacting pneumatic knee joint.
Background
In order to enable an amputee to live, learn and work as well as a normal person, an artificial limb is required to be installed for the patient, the knee joint used by the current thigh artificial limb mostly adopts a four-bar mechanism and an air pressure system to adjust gait, the air pressure system knee joint has the characteristic similar to the knee joint of a human body, and particularly the air pressure knee joint is very popular with the patient in terms of cheapness, so that the air pressure knee joint artificial limb is widely applied in clinic as an important rehabilitation device for the amputee.
In the prior art, all pneumatic knee joints of the link mechanisms have the defects that the pneumatic knee joints are unstable at one moment when a user lands in the process of wearing the artificial limb, the user easily falls down, and impact generated by the artificial limb on the ground acts on the residual limb, so that the stress and the burden of the residual limb, pelvis and spine are increased, and meanwhile, excessive abrasion of the knee joints is caused.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, an object of the present utility model is to provide a multiaxial cushion-grounded pneumatic knee joint for solving the problems of high impact force and serious abrasion of the knee joint during the grounding of the prosthetic limb in the prior art.
To achieve the above and other related objects, the present utility model provides a multi-axis cushioned earth pneumatic knee joint comprising:
the upper connecting rod is used for being connected with the thigh stump; further, the thigh residual limb is connected with the residual limb receiving cavity firstly, and then the residual limb receiving cavity is connected with the upper connecting rod; the cylinder component comprises a bracket cylinder body, a piston rod assembly, an extension assisting spring and a bidirectional flow regulating valve; the bidirectional flow regulating valve is used for regulating the movement speed of the piston rod assembly; the side connecting rods are used for connecting the upper connecting rods and the bracket cylinder body, and the upper connecting rods are movably connected with the bracket cylinder body through two symmetrically arranged side connecting rods; the bent connecting rod is used for transmission between the piston rod assembly and the upper connecting rod, the auxiliary connecting rod and the middle connecting rod are used for buffering hard landing of the artificial limb, the auxiliary connecting rod is hinged to the upper end of the support cylinder body, and two ends of the middle connecting rod are respectively hinged to the rear end of the upper connecting rod and the auxiliary connecting rod.
In the design, through the cooperation between the upper connecting rod, the auxiliary connecting rod, the middle connecting rod, the bracket cylinder body and the side connecting rod, the impact suffered by the artificial limb during grounding is effectively buffered, and the user experience is improved.
In an embodiment of the utility model, the extension-assisting spring is arranged in the cylinder cavity and is positioned between the piston rod assembly and the bottom end of the bracket cylinder body; the inner wall of the bracket cylinder body is provided with a gas flow passage, and the bidirectional flow regulating valve is arranged at the tail end of the gas flow passage.
In the design, the speed of the movement of the piston rod assembly can be adjusted through the bidirectional flow regulating valve, so that the speed of walking of a user can be matched.
In an embodiment of the utility model, the middle part of the auxiliary connecting rod is hinged with the upper end of the bracket cylinder body, and a buffer pad is arranged between the lower end of the auxiliary connecting rod and the bracket cylinder body; an adjustable pressure spring assembly is fixedly arranged on one side of the auxiliary connecting rod, and the adjustable pressure spring assembly provides damping for swing of the auxiliary connecting rod.
In the design, the buffer cushion is arranged between the lower end of the auxiliary connecting rod and the bracket of the bracket cylinder body, so that the impact force between the auxiliary connecting rod and the bracket cylinder body is effectively reduced; the adjustable pressure spring assembly is fixedly arranged on one side of the auxiliary connecting rod, so that the movement impact between the auxiliary connecting rod and the middle connecting rod is effectively reduced.
In one embodiment of the utility model, the adjustable pressure spring assembly comprises a ball head ejector rod, a pressure spring, an adjusting knob and a sleeve formed on the bracket cylinder body; the ball head ejector rod is arranged in the sleeve in a sliding mode, the upper end of the ball head ejector rod is propped against the upper end of the auxiliary connecting rod under the action of the pressure spring, the adjusting knob is in threaded connection with the sleeve, and the pressure spring is arranged between the adjusting knob and the ball head ejector rod.
In the design, the elasticity of the adjustable pressure spring is adjustable through the cooperation of the ball head ejector rod, the pressure spring, the adjusting knob and the sleeve.
In one embodiment of the present utility model, the surfaces of the upper link, the side link, the bent link, the auxiliary link and the middle link are coated with a wear-resistant coating.
In the design, the wear-resistant coatings are added on the surfaces of the upper connecting rod, the side connecting rod, the bent connecting rod, the auxiliary connecting rod and the middle connecting rod, so that the wear resistance of each connecting rod is effectively improved, and the overall service life of the pneumatic knee joint is prolonged.
As described above, the multiaxial cushion grounded pneumatic knee joint of the present utility model has the following beneficial effects: the upper connecting rod, the auxiliary connecting rod, the middle connecting rod, the bracket cylinder body and the side connecting rod are matched, so that the impact on the artificial limb during grounding is effectively buffered, and the user experience is improved; the buffer cushion is arranged between the lower end of the auxiliary connecting rod and the bracket of the bracket cylinder body, so that the impact force between the auxiliary connecting rod and the bracket cylinder body is effectively reduced; the adjustable pressure spring assembly is fixedly arranged on one side of the auxiliary connecting rod, so that the movement impact between the auxiliary connecting rod and the middle connecting rod is effectively reduced; the wear-resistant coatings are added on the surfaces of the upper connecting rod, the side connecting rod, the bent connecting rod, the auxiliary connecting rod and the middle connecting rod, so that the wear resistance of the connecting rods is effectively improved, and the overall service life of the pneumatic knee joint is prolonged.
Drawings
FIG. 1 is a schematic view showing the overall structure of a multi-axis cushion-to-ground pneumatic knee joint according to an embodiment of the present utility model;
fig. 2 is a semi-sectional view of a multi-axis cushioned pneumatic knee joint in accordance with an embodiment of the present utility model.
Description of element reference numerals
The device comprises an upper connecting rod 1, a cylinder component 2, a side connecting rod 3, a bent connecting rod 4, a secondary connecting rod 5, a middle connecting rod 6, a bracket cylinder 7, a piston rod assembly 8, an auxiliary extension spring 9, a bidirectional flow regulating valve 10, a cylinder cavity 11, a gas flow passage 12, a buffer cushion 13, an adjustable pressure spring assembly 14, a ball head ejector rod 15, a pressure spring 16, an adjusting knob 17 and a sleeve 18.
Detailed Description
Further advantages and effects of the present utility model will become apparent to those skilled in the art from the disclosure of the present utility model, which is described by the following specific examples.
Please refer to fig. 1-2. It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the utility model to the extent that it can be practiced, since modifications, changes in the proportions, or otherwise, used in the practice of the utility model, are not intended to be critical to the essential characteristics of the utility model, but are intended to fall within the spirit and scope of the utility model. Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the utility model, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the utility model may be practiced.
Referring to fig. 1-2, the present embodiment provides a multi-axis buffering ground-contacting pneumatic knee joint, comprising: an upper link 1, a cylinder member 2, a side link 3, a bent link 4, a sub link 5 and a middle link 6; wherein the upper connecting rod 1 is used for being connected with the thigh stump; further, the thigh stump is connected with a stump receiving chamber (not shown) which is in turn connected with the upper link 1. The cylinder component 2 comprises a bracket cylinder body 7, a piston rod assembly 8, an extension assisting spring 9 and a bidirectional flow regulating valve 10; wherein the piston rod assembly 8 is slidably arranged in a cylinder cavity 11 inside the bracket cylinder 7 and extends upwards under the action of an extension-assisting spring, and the bidirectional flow regulating valve 10 is used for regulating the movement speed of the piston rod assembly. The side connecting rods 3 are used for connecting the upper connecting rod 1 and the bracket cylinder 7, and the upper connecting rod 1 is movably connected with the bracket cylinder 7 through the two symmetrically arranged side connecting rods 3. The bent link 4 is used for the transmission between the piston rod assembly and the upper link 1. The auxiliary connecting rod 5 and the middle connecting rod 6 are used for buffering hard landing of the artificial limb, wherein the auxiliary connecting rod 5 is hinged to the upper end of the bracket cylinder 7, and two ends of the middle connecting rod 6 are respectively hinged to the rear end of the upper connecting rod 1 and the auxiliary connecting rod 5.
In the design, through the cooperation between the upper connecting rod 1, the auxiliary connecting rod 5, the middle connecting rod 6, the bracket cylinder body 7 and the side connecting rod 3, the impact suffered during the artificial limb grounding is effectively buffered, and the user experience is improved.
In the embodiment, the extension-assisting spring 9 is arranged inside the cylinder cavity 11 and is positioned between the piston rod assembly 8 and the bottom end of the bracket cylinder 7; the inner wall of the bracket cylinder 7 is provided with a gas flow passage 12, and the bidirectional flow regulating valve 10 is arranged at the tail end of the gas flow passage 12.
In the design, the speed of the movement of the piston rod assembly 8 can be adjusted through the bidirectional flow regulating valve 10 so as to match the walking speed of a user.
In the embodiment, the middle part of the auxiliary connecting rod 5 is hinged with the upper end of the bracket cylinder 7, and a buffer pad 13 is arranged between the lower end of the auxiliary connecting rod 5 and the bracket cylinder 7; in this embodiment, the cushion pad 13 is made of rubber; an adjustable pressure spring assembly 14 is fixedly arranged on one side of the auxiliary connecting rod 5, and the adjustable pressure spring assembly 14 provides damping for the swing of the auxiliary connecting rod 5.
The buffer cushion 13 is arranged between the lower end of the auxiliary connecting rod 5 and the bracket cylinder 7, so that the impact force between the auxiliary connecting rod 5 and the bracket cylinder 7 is effectively reduced; by fixedly arranging the adjustable pressure spring assembly 14 on one side of the auxiliary connecting rod 5, the movement impact between the auxiliary connecting rod 5 and the middle connecting rod 6 is effectively reduced.
In this embodiment, the adjustable pressure spring assembly 14 comprises a ball head ejector rod 15, a pressure spring 16, an adjusting knob 17 and a sleeve 18 formed on the bracket cylinder 7; the ball head ejector rod 15 is arranged in the sleeve 18 in a sliding manner, the upper end of the ball head ejector rod is pressed against the upper end of the auxiliary connecting rod 5 under the action of the pressure spring 16, the adjusting knob 17 is in threaded connection with the sleeve 18, and the pressure spring 16 is arranged between the adjusting knob 17 and the ball head ejector rod 15. Further, the upper end of the ball head ejector rod 15 is shaped into a hemispherical surface, so that the ball head ejector rod is convenient to contact with the upper end of the auxiliary connecting rod 5.
In the design, the elasticity of the pressure spring 16 is adjustable through the cooperation of the ball head ejector rod 15, the pressure spring 16, the adjusting knob 17 and the sleeve 18. The distance between the adjusting knob and the ball head ejector rod is changed by screwing the adjusting knob, so that the compression amount of the pressure spring 16 is changed, and the elastic force of the pressure spring 16 is adjusted.
In this embodiment, the surfaces of the upper link 1, the side links 3, the bent link 4, the sub link 5 and the middle link 6 are coated with a wear-resistant coating. The wear-resistant coatings are added on the surfaces of the upper connecting rod 1, the side connecting rod 3, the bent connecting rod 4, the auxiliary connecting rod 5 and the middle connecting rod 6, so that the wear resistance of the connecting rods is effectively improved, and the overall service life of the pneumatic knee joint is prolonged.
In summary, the upper connecting rod, the auxiliary connecting rod, the middle connecting rod, the bracket cylinder body and the side connecting rod are matched, so that impact on the artificial limb during grounding is effectively buffered, and user experience is improved; the buffer cushion is arranged between the lower end of the auxiliary connecting rod and the bracket cylinder body, so that the impact force between the auxiliary connecting rod and the bracket cylinder body is effectively reduced; the adjustable pressure spring assembly is fixedly arranged on one side of the auxiliary connecting rod, so that the movement impact between the auxiliary connecting rod and the middle connecting rod is effectively reduced; the wear-resistant coatings are added on the surfaces of the upper connecting rod, the side connecting rod, the bent connecting rod, the auxiliary connecting rod and the middle connecting rod, so that the wear resistance of the connecting rods is effectively improved, and the overall service life of the pneumatic knee joint is prolonged. Therefore, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.
The above embodiments are merely illustrative of the principles of the present utility model and its effectiveness, and are not intended to limit the utility model. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the utility model. Accordingly, it is intended that all equivalent modifications and variations of the utility model be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.
Claims (5)
1. A multi-axis cushioned, geodetic pneumatic knee joint, comprising:
the upper connecting rod is used for being connected with the thigh stump;
the cylinder component comprises a bracket cylinder body, a piston rod assembly, an extension assisting spring and a bidirectional flow regulating valve; the bidirectional flow regulating valve is used for regulating the movement speed of the piston rod assembly;
the side connecting rods are used for connecting the upper connecting rods and the bracket cylinder body, and the upper connecting rods are movably connected with the bracket cylinder body through two symmetrically arranged side connecting rods;
the bent connecting rod is used for transmission between the piston rod assembly and the upper connecting rod;
the auxiliary connecting rod and the middle connecting rod are used for buffering hard landing of the artificial limb, the auxiliary connecting rod is hinged to the upper end of the bracket cylinder body, and two ends of the middle connecting rod are respectively hinged to the upper connecting rod and the auxiliary connecting rod.
2. The multi-axis cushioned geodetic knee joint according to claim 1, wherein: the extension assisting spring is arranged in the cylinder cavity and is positioned between the piston rod assembly and the bottom end of the bracket cylinder body; the inner wall of the bracket cylinder body is provided with a gas flow passage, and the bidirectional flow regulating valve is arranged at the tail end of the gas flow passage.
3. The multi-axis cushioned geodetic knee joint according to claim 1, wherein: the middle part of the auxiliary connecting rod is hinged with the upper end of the bracket cylinder body, and a buffer cushion is arranged between the lower end of the auxiliary connecting rod and the bracket cylinder body;
an adjustable pressure spring assembly is fixedly arranged on one side of the auxiliary connecting rod, and the adjustable pressure spring assembly provides damping for swing of the auxiliary connecting rod.
4. A multi-axis cushioned geodetic knee joint according to claim 3, wherein: the adjustable pressure spring assembly comprises a ball head ejector rod, a pressure spring, an adjusting knob and a sleeve formed on the bracket cylinder body; the ball head ejector rod is arranged in the sleeve in a sliding mode, the upper end of the ball head ejector rod is propped against the upper end of the auxiliary connecting rod under the action of the pressure spring, the adjusting knob is in threaded connection with the sleeve, and the pressure spring is arranged between the adjusting knob and the ball head ejector rod.
5. The multi-axis cushioned geodetic knee joint according to claim 1, wherein: the surfaces of the upper connecting rod, the side connecting rod, the bent connecting rod, the auxiliary connecting rod and the middle connecting rod are coated with wear-resistant coatings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320483463.2U CN219557684U (en) | 2023-03-14 | 2023-03-14 | Multi-shaft buffering ground-contacting pneumatic knee joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320483463.2U CN219557684U (en) | 2023-03-14 | 2023-03-14 | Multi-shaft buffering ground-contacting pneumatic knee joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219557684U true CN219557684U (en) | 2023-08-22 |
Family
ID=87653086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320483463.2U Active CN219557684U (en) | 2023-03-14 | 2023-03-14 | Multi-shaft buffering ground-contacting pneumatic knee joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219557684U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117679229A (en) * | 2024-02-01 | 2024-03-12 | 佳木斯大学 | High polymer material knee joint support of adjustable holding power |
-
2023
- 2023-03-14 CN CN202320483463.2U patent/CN219557684U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117679229A (en) * | 2024-02-01 | 2024-03-12 | 佳木斯大学 | High polymer material knee joint support of adjustable holding power |
| CN117679229B (en) * | 2024-02-01 | 2024-04-16 | 佳木斯大学 | High polymer material knee joint support of adjustable holding power |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11246723B2 (en) | Lower limb prosthesis comprising a hydraulic damping and a vacuum generating mechanism | |
| CN219557684U (en) | Multi-shaft buffering ground-contacting pneumatic knee joint | |
| EP2762109B1 (en) | Hydraulic prosthetic ankle | |
| US3316558A (en) | Prosthetic leg with a hydraulic knee control | |
| US7052519B1 (en) | Prosthetic leg and foot apparatus | |
| CN109702715B (en) | Mechanical exoskeleton seat | |
| JP2003033377A (en) | Torsion device of extracorporeal prosthesis | |
| CN108527436B (en) | High-speed stable joint imitating ostrich | |
| CN203328874U (en) | Artificial human limb | |
| US9192487B2 (en) | Joint control systems and methods utilizing muscle activation sensing | |
| CN106333772B (en) | Elasticity is gone down on one's knees type lower limb knee joint artificial limb | |
| US20180256370A1 (en) | Prosthetic foot | |
| CN208756263U (en) | A kind of artificial thigh | |
| US20190192314A1 (en) | Compression heel prosthetic foot | |
| US10405998B2 (en) | Mounting bracket for connecting a prosthetic limb to a prosthetic foot | |
| CN111631847B (en) | Variable-rigidity flexible lower limb artificial limb turning device based on pneumatic artificial muscle | |
| US20210154027A1 (en) | Polycentric knee joint having an adjustment-free multi-stage air cylinder | |
| CN212416003U (en) | Variable-rigidity flexible lower limb artificial limb turning device based on pneumatic artificial muscles | |
| CN107007381B (en) | Artificial limb | |
| US20220071779A1 (en) | Prosthetic device | |
| CN111249043A (en) | Controllable semi-open type constant force receiving cavity for lower limb artificial limb | |
| CN219557686U (en) | Hydraulic knee joint | |
| Murphy | The swing phase of walking with above-knee prostheses | |
| RU2219877C2 (en) | Talocrural member of prosthesis | |
| CN220778495U (en) | Artificial foot prosthesis |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |