CN201768054U - Friction system of artificial limb knee joint - Google Patents
Friction system of artificial limb knee joint Download PDFInfo
- Publication number
- CN201768054U CN201768054U CN2010202156863U CN201020215686U CN201768054U CN 201768054 U CN201768054 U CN 201768054U CN 2010202156863 U CN2010202156863 U CN 2010202156863U CN 201020215686 U CN201020215686 U CN 201020215686U CN 201768054 U CN201768054 U CN 201768054U
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- CN
- China
- Prior art keywords
- friction
- axle center
- spring
- knee joint
- briquetting
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Abstract
The utility model relates to a friction system of an artificial limb knee joint. A friction tube with external threads and internal threads formed thereon is fixed in a lower bearing seat, wherein external threads and internal threads are formed on an axle center, and external threads formed on a joint of a connecting rod at the top of the system correspond to the internal threads of the axle center; more than one friction sleeve and a pressing block are arranged between the friction tube and the axle center, and the taper of the pressing block corresponds to that of the friction sleeve; a spring seat is arranged under the pressing block and the friction sleeve; an axle center screw is arranged at the lower end of the axle center after penetrating the spring seat; more than one disc spring is arranged between the pressing block and the spring seat; a spring is arranged under the spring seat, and an adjusting screw is arranged at the lower end of the spring; and the adjusting seat with internal threads formed thereon is arranged above the pressing block, and internal threads of the adjusting seat corresponds to the external threads of the axle center.
Description
Technical field
This utility model is relevant for a kind of artifucial limb knee joint friction system, to be applicable to different walking speeds and road surface situation.
Background technology
The artifucial limb user of above knee amputation is when advancing, and the amplitude that swings of its artifucial limb side and the phase that swings, when the speed of travel was accelerated, the artifucial limb side can strengthen the amplitude of swinging usually greater than strong limb side, cooperates the gait of strong limb side; Therefore the artifucial limb knee joint of basic function except due connecting rod constitutes design, more need possess smooth and easy bending and suitable buffered function; And the pooling feature that prior art more often uses can generally be divided into two types of gas-liquid pressure type and rotating shaft friction-types, wherein see also shown in Figure 6, this prior art reference figure, it is a kind of artifucial limb knee joint of rotating shaft friction-type, the kneed bearing at one's knees of this artifucial limb 6 inside are provided with spring and jacking block 61, and jacking block 61 is resisted against the extension 51 of commonly using connecting rod 5; Commonly use connecting rod 5 belows and be provided with gap 53, perforation is provided with fixedly that axle center 50 connects bearing 6 at one's knees, and this gap 53 is provided with screw 52; When the tight screw 52 of commentaries on classics dwindles gap 53, can increase and commonly use the connecting rod 5 and the fixing friction in axle center 50, avoid playing too high danger behind the heel, yet the knee joint of this kind design need cooperate fixed walking speed and road surface situation usually, when walking speed increases, also might surpass the state that frictional force can be stablized control, therefore suddenly treat further improvement.
The utility model content
Because the existence of above-mentioned various situations, the creator uses different friction systems then, allows the artifucial limb knee joint be applicable to different gait of march under the situation of safety.
For achieving the above object, the artifucial limb knee joint friction system of this utility model, it comprises; One friction tube is provided with external screw thread and female thread, is fixed in lower seat inside; One axle center is provided with external screw thread and female thread, and the linkage connector on top is provided with external screw thread corresponding to screw thread within the axle center, is provided with more than one friction sleeve and briquetting between friction tube and the axle center; Briquetting and friction sleeve below are provided with spring base, and bracket cup passes spring base and is arranged at the lower end, axle center; The spring base below is provided with spring, and this spring lower end is provided with the adjustment screw; Adjust seat and be provided with female thread, be arranged at the briquetting top, corresponding to screw thread outside the axle center.
This system lies in lower seat inside friction tube is set, and the axle center is arranged in the friction tube, and the linkage connector on top, axle center connects connecting rod, is provided with more than one friction sleeve and briquetting between friction tube and the axle center, and the briquetting below is provided with disc spring, spring base and spring; Bracket cup passes spring base and is arranged at the lower end, axle center, adjusts screw and is arranged at the friction tube lower end; Adjust seat and be provided with the adjustment hole, cooperate screw thread outside the axle center, be arranged at the briquetting top.
Because the axle center friction mode in the prior art can't be applicable to activity and reach the situation that walking speed increases greatly, the artifucial limb knee joint friction system of this utility model, when system uses friction sleeve and suffers oppression and the strain and the tension force that produce, frictional force between friction sleeve and the friction tube is increased, reach and play the dash-control of pendulum and bending; Therefore when an adjustment external screw thread according to the axle center moves down, can make briquetting extrusion friction cover, the rubber-like friction sleeve then can produce the shortening and the radial dilatating and deformable of axial length, and then allow friction sleeve increase radial tension force, to improve the frictional force between friction sleeve and the friction tube, the disc spring and the spring that cooperate the below are applicable to different gait of march.
Description of drawings
Fig. 1: be the axonometric chart of this utility model.
Fig. 2: be the side view of this utility model.
Fig. 3: be the three-dimensional system diagram of this utility model.
Fig. 4: be the sketch map of this utility model.
Fig. 5: be the sketch map of this utility model.
Fig. 6: be the reference diagram of prior art.
The primary clustering symbol description
1 axle center
11 linkage connectors
12 adjust seat
121 adjust the hole
13 briquettings
14 friction sleeves
15 disc springs
16 spring bases
17 bracket cups
2 friction tubes
21 springs
22 adjust screw
3 lower seats
4 connecting rods
The specific embodiment
Below with regard to the structure function of this utility model, adopt by preferable embodiment, cooperate graphic detailed description after, in order to do the understanding that increases this utility model; This utility model is a kind of artifucial limb knee joint friction system, sees also shown in drawing among Fig. 1 to 5, mainly comprises axle center 1 and friction tube 2, wherein;
See also shown in Fig. 1 to 4, friction tube 3 is provided with external screw thread and female thread, and external screw thread is in order to be fixed in lower seat 3 inside; Axle center 1 is provided with external screw thread and female thread, and screw thread is corresponding to screw thread within the axle center 1 outside the top linkage connector 11, and this linkage connector 11 is connected in connecting rod 4; Be provided with more than one friction sleeve 14 and briquetting 13 between friction tube 2 and the axle center 1, and present embodiment lies in two friction sleeves 14 are set between three briquettings 13, and briquetting 13 and friction sleeve 14 all are provided with the tapering of correspondence; Briquetting 13 belows are provided with spring base 16, between spring base 16 and the briquetting 13 more than one disc spring 15 can be set; Axle center spiral shell 17 passes spring base 16 and is arranged at 1 lower end, axle center; Spring base 16 belows are provided with spring 21, and these spring 21 lower ends are provided with adjusts screw 22; Adjust seat 12 and be provided with female thread, be arranged at briquetting 13 tops,, and should adjustments 12 be equi-spaced apart and be provided with several adjustment holes 121 corresponding to screw thread outside the axle center 1.
See also shown in Figure 4 and 5, the artifucial limb knee joint friction system of this utility model is when using friction sleeve 14 and suffering oppression and the strain and the tension force that produce increase the frictional force between friction sleeve 14 and the friction tube 2, reaches to play pendulum and crooked dash-control; As shown in Figure 5, when utilizing adjustment hole 121 rotation adjustment seats 12 that it is moved down according to axle center 1, rubber-like friction sleeve 14 can be subjected to briquetting 13 extruding, this moment, friction sleeve 14 meetings produced the shortening and the radial dilatating and deformable of axial length, the tension force of these friction sleeve 14 distortion promptly can improve the positive force of friction sleeve 14 and friction tube 2 contacts, frictional force is increased, can drive the axle center when artifucial limb knee joint bending or involution moves up and down, frictional force then can absorb and cushion the pressure of bending this moment, avoided playing too high or the too fast danger that swings behind the heel; And if walking speed is accelerated or when surpassing frictional force, promptly can drive axle center 1 fast moving, this moment, the disc spring 15 of below just can provide tension force upwards with spring 21, make 13 while of the briquetting extrusion friction cover 14 of below, the pressure of buffering walking speed quickening, and then make this utility model can be applicable to different gait of march and road surface situation; Only, the above person only is the preferable enforcement example of this utility model, when can not with as the scope that limits this utility model enforcement, all equalizations of being done according to this utility model claim change or modify, and must belong in the scope that this utility model patent contains.
Claims (4)
1. an artifucial limb knee joint friction system is characterized in that, comprises; One friction tube is provided with external screw thread and female thread, is fixed in lower seat inside; One axle center is provided with external screw thread and female thread, and the linkage connector on top is provided with external screw thread corresponding to screw thread within the axle center, is provided with more than one friction sleeve and briquetting between friction tube and the axle center; Briquetting and friction sleeve below are provided with spring base, and bracket cup passes spring base and is arranged at the lower end, axle center; The spring base below is provided with spring, and this spring lower end is provided with the adjustment screw; Adjust seat and be provided with female thread, be arranged at the briquetting top, corresponding to screw thread outside the axle center.
2. the described artifucial limb knee joint of claim 1 friction system is characterized in that, wherein is provided with more than one disc spring between briquetting and the spring base.
3. the described artifucial limb knee joint of claim 1 friction system is characterized in that, wherein adjusts seat and is provided with several adjustment holes, is the equi-spaced apart setting.
4. the described artifucial limb knee joint of claim 1 friction system is characterized in that, wherein briquetting and friction sleeve are provided with the tapering of mutual correspondence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202156863U CN201768054U (en) | 2010-06-01 | 2010-06-01 | Friction system of artificial limb knee joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202156863U CN201768054U (en) | 2010-06-01 | 2010-06-01 | Friction system of artificial limb knee joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201768054U true CN201768054U (en) | 2011-03-23 |
Family
ID=43747881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202156863U Expired - Fee Related CN201768054U (en) | 2010-06-01 | 2010-06-01 | Friction system of artificial limb knee joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201768054U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015169290A1 (en) | 2014-05-09 | 2015-11-12 | Otto Bock Healthcare Gmbh | Piston and damper |
| DE102017124298A1 (en) | 2017-10-18 | 2019-04-18 | Ottobock Se & Co. Kgaa | Orthopedic device and damper |
-
2010
- 2010-06-01 CN CN2010202156863U patent/CN201768054U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015169290A1 (en) | 2014-05-09 | 2015-11-12 | Otto Bock Healthcare Gmbh | Piston and damper |
| DE102017124298A1 (en) | 2017-10-18 | 2019-04-18 | Ottobock Se & Co. Kgaa | Orthopedic device and damper |
| WO2019076680A1 (en) | 2017-10-18 | 2019-04-25 | Ottobock Se & Co. Kgaa | Orthopaedic device and damper |
| DE102017124298B4 (en) | 2017-10-18 | 2019-05-09 | Ottobock Se & Co. Kgaa | Orthopedic device and damper |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110323 Termination date: 20180601 |