CN202665757U - Knee joint artificial limb - Google Patents
Knee joint artificial limb Download PDFInfo
- Publication number
- CN202665757U CN202665757U CN 201220325431 CN201220325431U CN202665757U CN 202665757 U CN202665757 U CN 202665757U CN 201220325431 CN201220325431 CN 201220325431 CN 201220325431 U CN201220325431 U CN 201220325431U CN 202665757 U CN202665757 U CN 202665757U
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- China
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- connecting rod
- rod
- knee joint
- artificial limb
- oil cylinder
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- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a knee joint artificial limb, which comprises a connecting rod head, a front connecting rod, a back connecting rod, a main connecting rod, a support connecting rod, a connecting rod body and an oil cylinder, wherein each part of the back connecting rod is fixed in an inner groove of the connecting rod head, the back end part of the main connecting rod and an inner groove of the support connecting rod respectively through an axle center assembly; the middle part of the main connecting rod is fixed on the top of an inner groove of the connecting rod body; the front end part of the main connecting rod is connected with the lower end part of the front connecting rod; the support connecting rod is connected with the bottom of the inner groove of the connecting rod body; the upper end part of the front connecting rod is connected to the connecting rod head; the oil cylinder rod joint of the oil cylinder is fixed on the back connecting rod; and an oil cylinder base is fixed on the connecting rod body. The knee joint artificial limb provided by the utility model has a self-locking function, the phenomenon of optional bending in the walking process of a user is avoided, and the safety is improved; and moreover, the bending frequency of the knee joint artificial limb is changed by adjusting the oil cylinder pressure, so that the walking compatibility and stability of the user are enhanced, the physical strength of the user is saved effectively, and comfort is improved.
Description
Technical field
This utility model relates to artificial limb and makes field, particularly a kind of knee joint artificial limb.
Background technology
Along with the attention of society to the people with disability, increasing people puts into and helps the people with disability again to cross in the work of upper orthobiosis, and scientific worker particularly constantly researches and develops better product help people with disability, remedies people with disability's functional defect.For leg amputee, artificial limb is installed, and to improve its mobility be the most succinct mode, and this artificial limb must make user feel comfortable, and can simulate the natural motion of the part limbs that substituted.
At present, already commercialization of knee joint artificial limb.For the use of knee joint artificial limb, arbitrarily to bend be very important to knee joint artificial limb when preventing from walking, and this point is the key of avoiding user to fall down; And the knee joint artificial limb frequency of bending also has important function for the harmony of user walking in the process of walking.Existing knee joint artificial limb is complicated structure not only, and, do not have good solution for above-mentioned 2.
The utility model content
The problem that this utility model solves provides a kind of knee joint artificial limb, the poor problem of harmony that solves existing knee joint artificial limb stability and use.
For addressing the above problem, the technical solution adopted in the utility model is:
A kind of knee joint artificial limb, comprise connecting rod head, front rod, back link, master connecting-rod, support link, gonnecting rod body and oil cylinder, wherein: the inner groovy of described connecting rod head is fixed in the upper end of described back link by the axle center assembly, described master connecting-rod rearward end is fixed in by the axle center assembly in the middle part, and the inner groovy of support link is fixed in the bottom by the axle center assembly; Described master connecting-rod middle part is socketed on the inner groovy top of gonnecting rod body by the axle center assembly, the master connecting-rod leading section connects the bottom of described front rod by the axle center assembly; The bottom of described support link is connected in described gonnecting rod body inner groovy bottom by the axle center assembly; Described front rod upper end is connected in connecting rod head by the axle center assembly; The cylinder rod adaptor cup jointing of described oil cylinder is in described back link upper end, and cylinder pedestal is fixed on the described gonnecting rod body.
Further, described oil cylinder is provided with the set screw for regulating pressure of hydro-cylinder.
Further, described connecting rod head top also is provided with for the square taper joint that upwards connects thigh.
Further, described gonnecting rod body is provided with securing member, is used for connecting below-knee prosthesis downwards.
Compared with prior art, the advantage of technical solutions of the utility model is:
By utilizing the design of geometrical principle, connecting rod head, front rod, back link, master connecting-rod, support link, gonnecting rod body and oil cylinder composition are had the knee joint of auto-lock function, the phenomenon of bending when having avoided standing in the use procedure improves safety; And change the frequency of bending of knee joint artificial limb by regulating pressure of hydro-cylinder, the harmony when strengthening the user walking and stability, the muscle power of effectively having saved user improves comfortableness.
Description of drawings
Fig. 1 is this utility model specific embodiment decomposing schematic representation;
Fig. 2 is this utility model specific embodiment schematic perspective view.
The specific embodiment
For above-mentioned purpose of the present utility model, feature and advantage can more be become apparent, below in conjunction with accompanying drawing the specific embodiment of the present utility model is described in detail.
Fig. 1 is this utility model specific embodiment decomposing schematic representation.As shown in Figure 1,
A kind of knee joint artificial limb comprises connecting rod head 1, front rod 2, back link 3, master connecting-rod 4, support link 5, gonnecting rod body 6 and oil cylinder 7, wherein:
The inner groovy 11 of described connecting rod head 1 is fixed in the upper end of described back link 3 by axle 32 and needle bearing 31, the dead eye of described master connecting-rod 4 rearward end is fixed at back link 3 middle parts by axle 33, pad 34 and needle bearing 35, the inner groovy 51 of support link 5 then is fixed in back link 3 bottoms by axle 36, pad 37 and needle bearing 38.
Described master connecting-rod 4 middle parts are fixed in by axle 41, pad 42 and needle bearing 43 in the inner groovy 61 top dead eyes of gonnecting rod body 6, and master connecting-rod 4 leading sections are fixed together by axle center 48, pad 46, needle bearing 47, steel bushing 45 and flat head screw 44 bottom and oil cylinder 7 bases with front rod 2.
The inner groovy 61 bottom bearing holes of described gonnecting rod body 6 are fixed in the bottom of described support link 5 by axle 52, pad 53 and needle bearing 54.
Described front rod 2 upper ends are fixed on the connecting rod head 1 by flat head screw 21, steel bushing 22, pad 23, needle bearing 24 and axle center 25.
The cylinder rod joint 71 of described oil cylinder 7 has a through hole, is socketed on the axle 32 of described back link 3 upper ends, and oil cylinder 7 bases then are fixed together jointly with master connecting-rod 4 leading sections, front rod 2 bottoms.
Described oil cylinder 7 is provided with for the set screw 72 of regulating oil cylinder 7 pressure.Can change the pressure of oil cylinder 7 by the degree of tightening of adjusting set screw 72, thereby adjust the size of oil cylinder 7 cushion effects.
Described connecting rod head 1 top also is provided with for the square taper joint 12 that upwards connects thigh.
Described gonnecting rod body 6 is provided with securing member 62, is used for connecting below-knee prosthesis downwards.
Above-mentioned each assembly shown in Figure 1 is assembled in formation knee joint artificial limb shown in Figure 2.Shown in Figure 2, the connecting rod head 1 of knee joint artificial limb, the axis of the square taper joint 12 of its connection is positioned at a side of front rod 2 upper ends and connecting rod head 1 fixed position.
When the user that above-mentioned knee joint artificial limb is installed was stood, square taper joint 12 bore the weight from user self, and connecting rod head 1 is produced downward pressure, and connecting rod head 1 passes to back link 3 with pressure.Back link 3 effect of being stressed moves downward; Back link 3 moves downward drive master connecting-rod 4 rearward end and moves downward, the wheelbase of master connecting-rod 4 rearward end and gonnecting rod body 6 is shortened, simultaneously since back link 3 when moving downward, the bottom that back link 3 is connected with support link 5 can move forward, also be about to support link 5 and compress into 61 li of the inner groovies of gonnecting rod body 6, so that support link 5 and back link 3 form a stable flexion angle, and under the knee joint artificial limb artesian condition, the wheelbase of master connecting-rod 4 rearward end and gonnecting rod body 6 is stationary state; Therefore, this moment, whole knee joint artificial limb presented lock-out state, namely presented erectility and can't bend.
Limbs when the knee joint artificial limb place turn forward until before the sole built on stilts, because knee joint artificial limb is not subject to power upwards, knee joint artificial limb still is in the lock state, also namely at this moment to the lower compression knee joint artificial limb, it still can not bend, thus the safety when having guaranteed walking.
When user is drawn up the knees, connecting rod head 1 is subject to the effect of upward force, and power passed to back link 3, the rearward end that drives master connecting-rod 4 moves upward, increased the stroke between master connecting-rod 4 rearward end and the gonnecting rod body 6, and support link 5 is also turned over, and 61 li of the inner groovies that tightly fits in gonnecting rod body 6, does not make knee joint artificial limb be in released state; When carrying knee joint to peak, because effect of inertia, the below-knee prosthesis that gonnecting rod body 6 and its underpart connect can move up by nature, at this moment, because knee joint is in released state, so that gonnecting rod body 6 and below-knee prosthesis and connecting rod head 1 form bending, similar buckling phenomenon during namely with normal limbs walking.
Because crooked speed is mainly determined by the mechanical performance between each parts of knee joint artificial limb, therefore, the different speeds of travel for the different users, need to increase the crooked speed that oil cylinder 7 is regulated knee joint artificial limb when walking, so that the limbs at knee joint artificial limb place are consistent with normal limbs hunting frequency, improve the harmony of user walking.Because oil cylinder 7 one ends are fixed in connecting rod head 1, the other end is fixed in gonnecting rod body 6, and therefore when knee joint artificial limb was crooked, oil cylinder 7 can cushion the power that produces because relative displacement occurs between gonnecting rod body 6 and the connecting rod head 1, thereby changes the crooked speed of knee joint artificial limb; Can regulate the pressure size of oil cylinder 7 inside by the set screw 72 of oil cylinder 7 bottoms setting, thereby 7 pairs of gonnecting rod bodies of oil cylinder 6 are big or small with the cushion effect of connecting rod head 1, also namely can change the rate of bending of knee joint artificial limb, realize the adjusting of knee joint artificial limb hunting frequency.After landing when striding, because knee joint artificial limb is subject to again downward pressure, therefore be in the lock state again, avoid bending and the situation of falling down.
The described knee joint artificial limb of this utility model specific embodiment, design according to geometrical principle, connecting rod head, front rod, back link, master connecting-rod, support link, gonnecting rod body and oil cylinder composition had the knee joint of auto-lock function, phenomenon occurs arbitrarily to bend when having avoided the user walking process, has improved security performance; And change the frequency of bending of knee joint artificial limb by regulating pressure of hydro-cylinder, the harmony when strengthening the user walking and stability, the muscle power of effectively having saved user improves comfortableness.
Although this utility model with preferred embodiment openly as above; but it is not to limit this utility model; any those skilled in the art are not within breaking away from spirit and scope of the present utility model; can make possible change and modification, therefore protection domain of the present utility model should be as the criterion with the scope that this utility model claim is defined.
Claims (4)
1. a knee joint artificial limb is characterized in that, comprises connecting rod head, front rod, back link, master connecting-rod, support link, gonnecting rod body and oil cylinder, wherein:
The inner groovy of described connecting rod head is fixed in the upper end of described back link by the axle center assembly, described master connecting-rod rearward end is fixed in by the axle center assembly in the middle part, and the inner groovy of support link is fixed in the bottom by the axle center assembly;
The inner groovy top of gonnecting rod body is fixed at described master connecting-rod middle part by the axle center assembly, the master connecting-rod leading section connects the bottom of described front rod by the axle center assembly;
The bottom of described support link is connected in described gonnecting rod body inner groovy bottom by the axle center assembly;
Described front rod upper end is connected in connecting rod head by the axle center assembly;
The cylinder rod adaptor cup jointing of described oil cylinder is in described back link upper end, and cylinder pedestal is fixed on the described gonnecting rod body.
2. knee joint artificial limb according to claim 1 is characterized in that, described oil cylinder is provided with the set screw for regulating pressure of hydro-cylinder.
3. knee joint artificial limb according to claim 1 is characterized in that, described connecting rod head top also is provided with for the square taper joint that upwards connects thigh.
4. knee joint artificial limb according to claim 1 is characterized in that, described gonnecting rod body is provided with securing member, is used for connecting below-knee prosthesis downwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220325431 CN202665757U (en) | 2012-07-06 | 2012-07-06 | Knee joint artificial limb |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220325431 CN202665757U (en) | 2012-07-06 | 2012-07-06 | Knee joint artificial limb |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202665757U true CN202665757U (en) | 2013-01-16 |
Family
ID=47486698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220325431 Expired - Fee Related CN202665757U (en) | 2012-07-06 | 2012-07-06 | Knee joint artificial limb |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202665757U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107007381A (en) * | 2017-04-14 | 2017-08-04 | 张策 | Artificial limb |
| CN109172065A (en) * | 2018-09-26 | 2019-01-11 | 天津工业大学 | Double self-locking artificial limb knee-joint structures |
-
2012
- 2012-07-06 CN CN 201220325431 patent/CN202665757U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107007381A (en) * | 2017-04-14 | 2017-08-04 | 张策 | Artificial limb |
| CN109172065A (en) * | 2018-09-26 | 2019-01-11 | 天津工业大学 | Double self-locking artificial limb knee-joint structures |
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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: 20130116 Termination date: 20170706 |