CN114260883A - Knee joint booster - Google Patents
Knee joint booster Download PDFInfo
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- CN114260883A CN114260883A CN202210129396.4A CN202210129396A CN114260883A CN 114260883 A CN114260883 A CN 114260883A CN 202210129396 A CN202210129396 A CN 202210129396A CN 114260883 A CN114260883 A CN 114260883A
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- support frame
- switch
- button
- tension
- thigh
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- 210000000629 knee joint Anatomy 0.000 title claims abstract description 83
- 210000000689 upper leg Anatomy 0.000 claims abstract description 110
- 210000001699 lower leg Anatomy 0.000 claims abstract description 98
- 238000007906 compression Methods 0.000 claims abstract description 65
- 230000006835 compression Effects 0.000 claims abstract description 59
- 210000003127 knee Anatomy 0.000 claims description 22
- 230000000670 limiting effect Effects 0.000 claims description 18
- 230000007704 transition Effects 0.000 claims description 11
- 238000003780 insertion Methods 0.000 claims description 10
- 230000037431 insertion Effects 0.000 claims description 10
- 244000309466 calf Species 0.000 claims description 6
- 230000036961 partial effect Effects 0.000 claims description 5
- 230000001681 protective effect Effects 0.000 claims description 4
- 229930040373 Paraformaldehyde Natural products 0.000 description 10
- 238000010586 diagram Methods 0.000 description 10
- 229920006324 polyoxymethylene Polymers 0.000 description 10
- 230000000149 penetrating effect Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 238000009434 installation Methods 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 210000002414 leg Anatomy 0.000 description 4
- 210000003141 lower extremity Anatomy 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000002829 reductive effect Effects 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- -1 polyoxymethylene Polymers 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
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Abstract
The utility model relates to a commodity circulation transportation auxiliary instrument field especially relates to a knee joint booster, include: the device comprises a thigh support frame, a shank support frame, a torsion spring, a tension and compression spring, a thigh binding piece, a shank binding piece and a power-assisted change-over switch; the thigh binding piece is connected with the upper end of the thigh support frame, and the shank binding piece is connected with the lower end of the shank support frame; the lower end of the thigh support frame is hinged with the upper end of the shank support frame through a hinge shaft; the torsion spring is sleeved on the hinge shaft, and the upper end torsion arm of the torsion spring extends upwards; the lower end torsion arm of the torsion spring extends downwards and is fixedly connected with the outer wall of the crus support frame; the tension and compression spring is compressed into the tension and compression spring placing groove; the power-assisted change-over switch is connected with the thigh support frame in a sliding mode and provided with a torsion arm jack which is arranged downwards to accommodate an upper end torsion arm of the torsion spring. The knee joint protection device can reduce the load influence of object carrying on the knee joint and effectively protect the knee joint of an object carrier.
Description
Technical Field
The application relates to the field of logistics transportation auxiliary appliances, in particular to a knee joint booster.
Background
The knee joint is the joint which is most impacted by the human body in the process of movement, in particular to the process of carrying heavy objects to go up and down stairs. The knee joint can be seriously damaged by carrying heavy objects for a long time, so that the knee joint becomes very fragile and is easy to be injured, and the load bearing capacity of the knee joint is greatly reduced. In actual logistics transportation, to the old district that lacks the elevator, the express delivery person need carry the heavy object usually and go up and down stairs, and under external equipment intervention does not, express delivery person knee joint heavy burden can increase by a wide margin, can seriously damage its knee joint for a long time. In addition, due to the limitation of the weight bearing capacity of the knee joint of the human body, a plurality of couriers are often required to cooperatively carry the general large-piece transportation, and thus the transportation cost is greatly increased.
Therefore, how to reduce the load influence on the knee joint caused by object carrying and effectively protect the knee joint of the object carrier is a technical problem to be solved by those skilled in the art.
Disclosure of Invention
The application provides a knee joint booster to reduce the heavy burden influence of object transport to the knee joint, protect object carrier's knee joint effectively.
In order to solve the technical problem, the application provides the following technical scheme:
a knee booster comprising: the device comprises a thigh support frame, a shank support frame, a torsion spring, a tension and compression spring, a thigh binding piece, a shank binding piece and a power-assisted change-over switch; the thigh binding piece is connected with the upper end of the thigh support frame, and the shank binding piece is connected with the lower end of the shank support frame; the lower end of the thigh support frame is hinged with the upper end of the shank support frame through a hinge shaft in the horizontal direction; the torsional spring is sleeved on the hinge shaft and is positioned on the inner side of the thigh support frame and the outer side of the shank support frame; the upper end torque arm of the torsion spring extends towards the upper end direction of the thigh support frame; the lower end torsion arm of the torsion spring extends towards the lower end direction of the shank support frame and is fixedly connected with the outer wall of the shank support frame; the inner side of the lower end of the thigh support frame is provided with an arc-shaped tension and compression spring placing groove which is concave inwards, the tension and compression spring placing groove is positioned on the outer side of the torsion spring, the upper end of the tension and compression spring placing groove is sealed with a limiting wall, and the lower end of the tension and compression spring placing groove is open; the upper end of the shank support frame is provided with a tension and compression spring limiting block which protrudes outwards, is positioned on the outer side of the torsion spring and is sealed to the opening at the lower end of the tension and compression spring placement groove; the tension and compression spring is compressed into the tension and compression spring placing groove; the power-assisted change-over switch is connected with the thigh support frame in a sliding manner, slides downwards, and is inserted into a torque arm insertion hole formed in the power-assisted change-over switch downwards so as to fixedly lock the torsion spring; the power-assisted transfer switch slides upwards, and a torsion arm at the upper end of the torsion spring extends out of a torsion arm jack of the power-assisted transfer switch so as to separate and unlock the torsion spring.
In the knee joint booster according to the above, preferably, the lower end of the thigh support frame extends inward to form the hinge tube penetrating the inside and the outside, and the upper end of the shank support frame extends outward to form the hinge tube penetrating the inside and the outside; the tail of the hinge shaft penetrates into the hinge pipe of the shank support frame from the inner side and penetrates out of the hinge pipe of the shank support frame from the outer side, the head of the hinge shaft is clamped to the inner side of the shank support frame, and the tail of the hinge shaft is fixedly connected with the fastening nut.
In the knee joint booster according to the above, preferably, a circular protection wall extends outward from the upper end of the lower leg support frame, and the protection wall surrounds the outer periphery of the torsion spring; the height of one part of the protection wall is lower than that of the other part of the protection wall, and the part of the protection wall with the lower height corresponds to the bottom of the tension and compression spring placement groove, so that the tension and compression spring is separated from the torsion spring.
The knee joint booster as described above, wherein, preferably, the tension/compression spring stopper is fixed on an outer side wall of the partial protection wall having a higher height and is connected to the partial protection wall having a lower height.
The knee joint booster as described above, wherein, preferably, there is a POM transition ring extending inwards on the inner side of the thigh support frame, the POM transition ring surrounds the outer periphery of the torsion spring and is located on the inner side of the protection wall of the shank support frame; a spring POM pad is provided in a space formed between the outer side of the lower leg support and a lower part of the protection wall.
The knee joint booster as described above, wherein preferably the power-assisted changeover switch includes: the switch comprises a switch front cover, a switch sliding block, a switch bottom plate and a button; the thigh support frame is provided with a first sliding long hole which extends up and down and penetrates through the inner side and the outer side, the switch front cover is provided with a second sliding long hole which extends up and down and penetrates through the inner side and the outer side, the switch front cover is fixed to the outer side of the thigh support frame, and the second sliding long hole corresponds to the first sliding long hole; the switch bottom plate is provided with an upper sliding groove and a lower sliding groove which are communicated, the lower end of the switch sliding block is provided with a torque arm jack which is concave upwards, and the switch sliding block is positioned in the sliding groove and is connected with the switch bottom plate in a sliding way; the switch base plate is fixed to the inner side of the thigh support frame, and the sliding groove faces the thigh support frame; the rear end of the button is fixed on the front side of the switch sliding block, and the front end of the button sequentially penetrates through the first sliding long hole and the second sliding long hole to extend outwards.
The knee joint booster as described above, wherein preferably, a part of the switch slider protrudes into the first long slide hole.
The knee joint booster as described above, wherein preferably, the power-assisted changeover switch further includes: a movable shaft and a return spring; the rear end of the moving shaft is fixed on the front side of the switch sliding block, the moving shaft is provided with a moving cavity with an opening facing to the front end, the reset spring is placed in the moving cavity, and the rear end of the button extends into the moving cavity and is in contact with the reset spring; the upper end and the lower extreme of second slip slot hole are wider than the interlude of second slip slot hole, and the rear end of button is wider than the interlude of button, and the rear end of button is all wide than the upper end and the lower extreme of second slip slot hole, and the interlude of button is wider than the front end of button, and the interlude of button is all narrow than the upper end and the lower extreme of second slip slot hole, and the interlude of second slip slot hole is wider.
The knee joint booster as described above, wherein, preferably, a slot extending in the front-rear direction is further provided on the moving shaft, and an axially extending guide rail is provided at the rear end of the button, the guide rail being slidably fitted with the slot.
The knee joint booster as described above, wherein preferably, the power-assisted changeover switch further includes: an ABS printing cover and an ABS printing button; the ABS printing cover is provided with a third sliding long hole, and the ABS printing button is provided with a button hole; the ABS printing cover is buckled on the switch front cover, the second sliding long hole corresponds to the third sliding long hole, the ABS printing button is located on the outer side of the ABS printing cover, and the front end of the button penetrates through the button hole.
Above-mentioned background art relatively, the knee joint booster that this application provided can reduce the object transport and to the heavy burden influence of knee joint, protects object carrier's knee joint effectively.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.
Fig. 1A is a front view of a knee joint booster provided in an embodiment of the present application in an upright state;
fig. 1B is a side view of a knee booster provided in an embodiment of the present application in an upright state;
fig. 2A is a front view of a knee joint booster provided in an embodiment of the present application in a bending state;
fig. 2B is a side view of a knee booster provided in an embodiment of the present application in a flexed state;
FIG. 3 is an exploded view of the "joint" of the knee booster provided in the embodiments of the present application;
FIG. 4 is a schematic view of a thigh support of a knee booster provided in an embodiment of the present application;
FIG. 5 is a schematic view of a "joint" of a knee booster provided in an embodiment of the present application;
FIG. 6 is a schematic view of a lower leg support of a knee booster provided in an embodiment of the present application;
FIG. 7A is a first schematic view illustrating an initial position of a tension/compression spring of a knee booster according to an embodiment of the present disclosure; fig. 7B is a second schematic diagram illustrating an initial position of a tension/compression spring of the knee joint booster according to the embodiment of the present application;
FIG. 8A is a first schematic view illustrating a compression position of a tension/compression spring of a knee booster according to an embodiment of the present disclosure;
fig. 8B is a second schematic diagram illustrating a compression position of the tension/compression spring of the knee joint booster according to the embodiment of the present application;
fig. 9A is a first schematic diagram of a power-assisted transfer switch of a knee joint booster according to an embodiment of the present disclosure;
fig. 9B is a schematic diagram of a power-assisted changeover switch of the knee joint booster according to the embodiment of the present application;
FIG. 10A is a first schematic view of a knee booster provided in an embodiment of the present disclosure in a non-assisted state;
fig. 10B is a schematic diagram of a knee joint booster provided in the embodiment of the present application in a non-assisted state;
fig. 11A is a first schematic view illustrating a power-assisted state of a knee joint booster according to an embodiment of the present disclosure;
fig. 11B is a schematic diagram ii illustrating a knee joint booster provided in the embodiment of the present application in a boosting state;
FIG. 12 is a schematic diagram of a knee booster state transition provided by an embodiment of the present application;
FIG. 13 is a schematic diagram of an ABS print of a knee booster provided in an embodiment of the present application;
FIG. 14 is a diagram illustrating a state transition process of a knee booster according to an embodiment of the present disclosure;
fig. 15 is a schematic diagram illustrating a transition between a vertical state and a bending state of a knee joint booster according to an embodiment of the present application.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative only and should not be construed as limiting the invention.
As shown in fig. 1 to 3, the present application provides a knee joint booster including: thigh support 110, shank support 120, torsion spring 130, tension and compression spring 140, thigh binding 150, shank binding 160, and power-assisted transfer switch 170.
Wherein, the thigh binding piece 150 is connected with the upper end of the thigh support frame 110, and the shank binding piece 160 is connected with the lower end of the shank support frame 120.
As an example, thigh strap 150 is fixedly coupled to thigh support frame 110, and calf strap 160 is fixedly coupled to calf support frame 120. Specifically, a thigh fixing hole penetrating through the inner side and the outer side may be formed at the upper end of the thigh support frame 110, and a rivet penetrates through the thigh fixing hole and the thigh binding piece 150 to fix the thigh binding piece 150 to the inner side of the thigh support frame 110; in addition, a lower leg fixing hole penetrating through the inner and outer sides may be formed at the lower end of the lower leg support frame 120, and the lower leg binding 160 may be fixed to the inner side of the lower leg support frame 120 by a rivet penetrating through the lower leg fixing hole and the lower leg binding 160. The inner side as referred to herein means a side close to the leg and the outer side means a side far from the leg, and the direction a as shown in fig. 3 is the inner side and the opposite direction is the outer side; the upper direction as used herein means a direction toward the head of the human body, and the lower direction means a direction toward the feet of the human body, and the direction B as shown in fig. 3 is the upper direction, and the opposite direction is the lower direction.
As another example, one end of thigh binding 150 is fixed to thigh support frame 110, and the other end of thigh binding 150 is provided with a hook and loop fastener (not shown) for fastening the knee joint booster to the thigh of the wearer by the hook and loop fastener after thigh binding 150 is wound around the thigh of the wearer; one end of the lower leg binding member 160 is fixed to the lower leg support 120, and the other end of the lower leg binding member 160 is provided with a hook and loop fastener, so that the knee joint booster is bound to the lower leg through the hook and loop fastener after the lower leg binding member 160 is bound to the lower leg of the wearer.
For guaranteeing that the knee joint booster remains normal operating posture throughout wearing the use, the embodiment according to this application still provides waist bearing structure, it mainly includes waist bearing belt and bearing suspender two parts, use the bearing suspender to couple together waist bearing belt and the knee joint booster of controlling the leg, and waist bearing belt bindes at the person's of dress waist, just so can pull the knee joint booster through this kind of waist bearing structure, so offset booster gravity, thereby the gliding phenomenon that the knee joint booster appears because of its dead weight has been avoided.
The knee joint booster in this application can also include: a lumbar support member 180 and a support harness 190; wherein the waist support 180 is adapted to be wrapped around the waist of the wearer; one end of a load bearing strap 190 is secured to thigh strap 150, preferably with load bearing strap 190 opposite the upper end of thigh support frame 110 to ensure that load bearing strap 190 is positioned on the outside of the wearer; the other end of the load bearing harness 190 is secured to the lumbar support member 180. To provide a better use experience for the wearer, the interior of the waist support 180 is also provided with a flexible pad (not shown).
As another example, as shown in fig. 4, 5 and 6, the lower end of the thigh support frame 110 is extended inward with a hinge pipe 111 penetrating the medial and lateral sides, the upper end of the lower leg support frame 120 is extended outward with a hinge pipe 121 penetrating the medial and lateral sides, and the hinge shaft 210 penetrates the hinge pipe 111 of the thigh support frame 110 and the hinge pipe 121 of the lower leg support frame 120, thereby realizing the hinge of the lower end of the thigh support frame 110 and the upper end of the lower leg support frame 120. In order to ensure the stability of the hinge shaft 210, the tail of the hinge shaft 210 penetrates the hinge pipe 121 of the lower leg support 120 from the inner side and penetrates the hinge pipe 110 of the upper leg support 110 from the outer side, and the head of the hinge shaft 210 is clamped to the inner side of the lower leg support 120, and the tail of the hinge shaft 210 is fixedly connected with the fastening nut 220.
In order to prevent the "joint" formed by the thigh support frame 110 and the shank support frame 120 from affecting the movement of the knee joint of the human body, the thigh support frame 110 is bent outwards from the middle part thereof and then extends downwards, thereby providing a larger space for the "joint" formed by the thigh support frame 110 and the shank support frame 120. The "middle portion" as used herein refers to a position between the upper and lower ends of the thigh support frame 110, and does not necessarily mean a position intermediate the upper and lower ends of the thigh support frame 110.
For example, a torsion arm fixing member 230 extending outward is fixed to an outer wall of the lower leg support frame 120, and the lower end torsion arm 132 of the torsion spring 130 is engaged with an engagement surface of the torsion arm fixing member 230 so as to fixedly connect the lower end torsion arm 132 of the torsion spring 130 and the outer wall of the lower leg support frame 120, wherein the engagement surface of the torsion arm fixing member 230 extends in the same direction as the lower leg support frame 120. In order to ensure that the lower torsion arm 132 of the torsion arm fixing member 230 is stably fixed to the lower torsion arm 132 of the torsion spring 130, the engaging surface of the torsion arm fixing member 230 has a concave engaging groove, and the concave engaging groove extends in the same direction as the lower leg support 120 to accommodate the lower torsion arm 132 of the torsion spring 130, and preferably fix the lower torsion arm 132 of the torsion spring 130.
On the basis, because the thigh and the shank of the wearer are in the state of standing up each other, the torsional spring 130 does not have the moment of resetting, and the thigh and the shank are in the state of bending each other, and the torsional spring 130 has the moment of resetting, so can lead to the moment of resetting of knee joint booster of this application to appear the fault phenomenon to influence its helping hand effect.
Based on this, in the present application, an arc-shaped tension/compression spring placing groove 112 recessed inward is provided on the inner side of the lower end of the thigh support frame 110, the tension/compression spring placing groove 112 is located on the outer side of the torsion spring 130, and the upper end thereof is closed by a limit wall 1121 (shown in fig. 4 and 5), and the lower end thereof is open; a tension and compression spring limiting block 240 protruding outwards is arranged at the upper end of the lower leg support frame 120, the tension and compression spring limiting block 240 is positioned at the outer side of the torsion spring 130, and the tension and compression spring limiting block 240 is closed to the lower end opening of the tension and compression spring accommodating groove 112; the tension and compression spring 140 is compressed into the tension and compression spring placement groove 112 (as shown in fig. 7A to 8B), that is, one end of the tension and compression spring 140 contacts with the limiting wall 1121 at the upper end of the tension and compression spring placement groove 112, and the other end of the tension and compression spring 140 contacts with the tension and compression spring limiting block 240, and it is ensured that the tension and compression spring 140 always works in a compressed state in the use process to provide a pre-tightening moment, and when a wearer stands (i.e., thighs and calves are in a mutually upright state), an assistance effect can still be provided, and it is ensured that the knee-joint booster can continuously provide an assistance effect in the use process.
Due to the mutual limitation of the limiting wall 1121 and the tension and compression spring limiting block 240, the angle direction of relative rotation between the thigh support frame 110 and the shank support frame 120 can be limited, the positive joint movement of the knee joint booster is ensured, the reverse joint movement of the knee joint booster is avoided, and the secondary injury to the knee joint of a wearer is prevented.
In order to avoid the mutual contact influence between the tension/compression spring 140 and the torsion spring 130, the bottom of the tension/compression spring placement groove 112 is higher than the inner sidewall of the lower end of the thigh support frame 110, so that the position of the torsion spring 130 is limited by the higher tension/compression spring placement groove 112.
In order to protect the torsion spring 130 from the circumferential direction, a circular protection wall 122 extends outward from the upper end of the lower leg support 120, and the protection wall 122 surrounds the outer periphery of the torsion spring 130. In addition, a portion of the protection wall 122 has a height lower than that of another portion of the protection wall 122, and the lower portion of the protection wall corresponds to the bottom of the tension and compression spring seating groove 112, thereby partitioning the tension and compression spring 140 from the torsion spring 130. On the basis of the above, the tension/compression spring stopper 240 is fixed on the outer side wall of the higher part of the protection wall 122 and connected with the lower part of the protection wall. In the present application, the preferred tension/compression spring stopper 240 is fixed to the higher part of the protection wall by screws, but other fixing methods may be used.
To reduce the contact friction coefficient between thigh support shelf 110 and lower leg support shelf 120, there is an inwardly extending POM (polyoxymethylene) transition ring 250 on the inside of thigh support shelf 110, POM transition ring 250 surrounding the outer circumference of torsion spring 130 and located on the inside of protective wall 122 of lower leg support shelf 120 to avoid direct contact between thigh support shelf 110 and lower leg support shelf 120. Preferably, the POM transition ring 250 is a stepped ring, the large end of which contacts the inside of the thigh support frame 110, and the stepped surface of which contacts the protection wall 122. In order to facilitate installation, an upper installation groove and a lower installation groove which axially extend are formed in the POM transition ring 250, the upper end torsion arm 131 of the torsion spring 130 extends upwards from the upper installation groove, and the lower end torsion arm 132 of the torsion spring 130 extends downwards from the lower installation groove.
Further, a spring POM pad 260 is provided in a space formed between the outer side of the lower leg support 120 and the lower partial protection wall, and the spring POM pad 260 is preferably shaped in an arc shape so as to avoid direct contact between the thigh support 110 and the lower leg support 120.
The power-assisted transfer switch 170 is slidably connected with the thigh support frame 110, the power-assisted transfer switch 170 slides downwards, the torsion arm 131 at the upper end of the torsion spring 130 is inserted into a torsion arm insertion hole formed in the power-assisted transfer switch 170 downwards to fixedly lock the torsion spring 130, so that the torsion spring 130 can absorb energy and provide a reset moment, and the knee joint booster is in a power-assisted state; the power-assisted transfer switch 170 slides upwards, and the upper-end torsion arm 131 of the torsion spring 130 extends out of the torsion arm jack of the power-assisted transfer switch 170 to separate and unlock the torsion spring 130, so that the torsion spring 130 can not absorb energy any more and can not provide a restoring moment, and the knee-joint booster is in a non-power-assisted state. Just because the knee joint booster of this application can be switched between non-helping hand state and helping hand state, torsional spring 130 only stores energy when the helping hand state, and does not store energy when the non-helping hand state, therefore the torsional spring 130 of this application can adopt high strength torsional spring, in order to obtain great helping hand moment, thereby make the knee joint booster of this application can be applicable to the wearing person (for example: express delivery person) of carrying the heavy object, provide the helping hand to the wearing person's of carrying the heavy object knee joint effectively, the impact peak that the wearing person received in the carrying heavy object in-process knee joint has weakened, make the wearing person's knee joint load tend to steady, play the effect of protection knee joint, also can increase wearing person's actual transportation load upper limit simultaneously, and this application has still avoided loaded down with trivial details to wear the knee joint booster repeatedly, the work load of wearing person has been reduced.
As an example, as shown in fig. 3, 9A and 9B, the boost converter switch 170 includes: a switch front cover 171, a switch slider 172, a switch base 173, and a button 174. Among them, the thigh support frame 110 has a long sliding hole 113 (as shown in fig. 4) extending up and down and penetrating through the inner and outer sides, the switch front cover 171 has a long sliding hole 1711 extending up and down and penetrating through the inner and outer sides, and the switch front cover 171 is fixed to the outer side of the thigh support frame 110, for example: the switch front cover 171 has a fixing hole 1712 thereon, a screw is fixed to the outer side of the thigh support frame 110 through the fixing hole 1712, and the slide long hole 1711 of the switch front cover 171 corresponds to the slide long hole 113 of the thigh bracket 110; the switch bottom plate 173 has a through up-down sliding groove 1731, and the lower end of the switch slider 172 has an upwardly concave torque arm jack 1721 for accommodating the upper torque arm 131 of the torsion spring 130; the switch slider 172 is located in the sliding groove 1731 and is slidably connected with the switch base plate 173; a switch base plate 173 is fixed to the inner side of the thigh support frame 110, for example: the switch base plate 173 has a fixing hole 1732, and a screw is fixed to the inner side of the thigh support frame 110 through the fixing hole 1732, and the sliding groove 1731 faces the thigh support frame 110; the rear end of the button 174 is fixed to the front side of the switch slider 172, and the front end of the button 174 sequentially passes through the long sliding hole 113 of the thigh support bracket 110 and the long sliding hole 1711 of the switch front cover 171 to extend outward, so that the wearer can switch between the power-assisted state and the non-power-assisted state of the knee joint booster by operating the button 174.
Preferably, a portion of the switch slider 172 protrudes into the slide long hole 113 of the thigh support frame 110, so that the upward and downward limit positions of the switch slider 172 are restricted by the slide long hole 113 of the thigh support frame 110. Further preferably, in order to ensure the stability of the switch slider 172, the sliding groove 1731 of the switch base plate 173 has a guide groove 1733 extending up and down, the switch slider 172 has a guide rail 1722 extending up and down, and the guide rail 1722 is slidably engaged with the guide groove 1733. Further, both side surfaces of the sliding groove 1731 have a guide groove 1733, and both side surfaces of the switch slider 172 also have a guide rail 1722, so that the switch slider 172 is more stable by the sliding fit of the two guide grooves 1733 and the two guide rails 1722.
On the basis, the power-assisted switch 170 further includes: a moving shaft 175 and a return spring 176; the rear end of the moving shaft 175 is fixed to the front side of the switch slider 172, the moving shaft 175 has a moving cavity 1751 with an opening facing the front end, the return spring 176 is placed in the moving cavity 1751, and the rear end of the button 174 extends into the moving cavity 1751 and contacts with the return spring 176. The upper and lower ends of the sliding long hole 1711 of the switch front cover 171 are wider than the middle section of the sliding long hole 1711, the rear end of the push button 174 is wider than the middle section of the push button 174, and the rear end of the push button 174 is wider than both the upper and lower ends of the sliding long hole 1711 to ensure that the push button 174 cannot be disengaged from the sliding long hole 1711; the middle section of the button 174 is wider than the front end of the button 174, and the middle section of the button 174 is narrower than both the upper end and the lower end of the sliding long hole 1711 and wider than the middle section of the sliding long hole 1711, so that when the button 174 is located at the upper end and the lower end of the sliding long hole 1711, under the action of the return spring 176, the middle section of the button 174 penetrates out of the upper end and the lower end of the sliding long hole 1711, thereby clamping the button 174 at the upper end and the lower end of the sliding long hole 1711, and when the button 174 is located at the middle section of the sliding long hole 1711, the return spring 176 is compressed, the middle section of the button 174 is clamped at the inner side of the switch front cover 171, and only the front end of the button 174 extends out of the middle section of the sliding long hole 1711.
In this case, when the button 174 is caught at the upper end of the long sliding hole 1711, the upper torsion arm 131 of the torsion spring 130 protrudes from the torsion arm insertion hole 1721 of the switch slider 172, and the knee booster is maintained in the non-boosting state (as shown in fig. 10A and 10B); when the button 174 is engaged with the lower end of the sliding long hole 1711, the upper torsion arm 131 of the torsion spring 130 is inserted into the torsion arm insertion hole 1721 of the switch slider 172, and the knee booster is maintained in the booster state (as shown in fig. 11A and 11B). When the button 174 slides from top to bottom in the middle section of the sliding long hole 1711, the upper end torsion arm 131 of the torsion spring 130 gradually extends into the torsion arm insertion hole 1721 of the switch slider 172, so as to convert the knee booster from the non-assisted state to the assisted state (as shown in fig. 12); when the button 174 slides from bottom to top in the middle section of the long sliding hole 1711, the upper torsion arm 131 of the torsion spring 130 gradually extends out of the torsion arm insertion hole 1721 of the switch slider 172, so as to convert the knee booster from the assisted state to the non-assisted state (as shown in fig. 12).
In addition, in order to limit the circumferential position of the push button 174, a slot 1752 extending in the front-rear direction is further provided in the moving shaft 175, a guide 1741 extending in the axial direction is provided at the rear end of the push button 174, and the guide 1741 is slidably fitted into the slot 1752 to limit the relative position of the push button 174 and the moving shaft 175, thereby limiting the circumferential rotation of the push button 174.
In addition, in order to facilitate the manual sliding of the switch slider 172, the power-assisted switch 170 of the present application further includes: ABS print cover 177 and ABS print button 178 (shown in fig. 3 and 13); the ABS print cover has a long slide hole 1771, and the ABS print button 178 has a button hole 1781; the ABS print cover 177 is snapped onto the switch front cover 171, and the slide long hole 1771 corresponds to the slide long hole 1711, the ABS print button 178 is located outside the ABS print cover 177, and the front end of the button 174 passes through the button hole 1781.
When the knee joint booster is used, the thigh support frame 110 is bound to the thigh of the lower limb of the human body through the thigh binding piece 150, the shank support frame 120 is bound to the shank of the lower limb of the human body through the shank binding piece 160, and the joint formed by hinging the thigh support frame 110 and the shank support frame 120 is aligned with the knee joint of the human body. The knee booster 100 can be in three operating states, which are: a non-assisted state, a transition state and an assisted state.
As shown in fig. 14 and 15, when the power-assisted switch 170 is away from the "joint" formed by the thigh support frame 110 and the shank support frame 120, the upper-end torsion arm 131 of the torsion spring 130 is disengaged from the torsion arm insertion hole 1721 of the power-assisted switch 170, so that the freedom of the torsion arm of the torsion spring 130 is released, and the knee-joint power booster is in a non-power-assisted state, at this time, in order to maintain the non-power-assisted state and avoid unnecessary displacement of the power-assisted switch 170, the button 174 is locked at the upper end of the sliding long hole 1711 of the switch front cover 171. When the power-assisted transfer switch 170 is gradually changed from a joint formed by a position far away from the thigh support frame 110 and the shank support frame 120 to a joint formed by a position close to the thigh support frame 110 and the shank support frame 120, the upper end torque arm 131 of the torsion spring 130 gradually extends into the torque arm insertion hole 1721 of the power-assisted transfer switch 170, the knee-joint booster is in a transfer state from a non-power-assisted state to a power-assisted state, and the button 174 is located in the middle section of the sliding long hole 1711 of the switch front cover 171. When the power-assisted transfer switch 170 is close to the "joint" formed by the thigh support frame 110 and the shank support frame 120, the upper-end torsion arm 131 of the torsion spring 130 is inserted into the torsion arm insertion hole 1721 of the power-assisted switch 170, so that the torsion arm of the torsion spring 130 is limited to generate displacement rotation, the knee-joint booster is in a power-assisted state, and at this moment, in order to keep the power-assisted state, the power-assisted transfer switch 170 is prevented from generating unnecessary displacement, and the button 174 is clamped at the lower end of the sliding long hole 1711 of the switch front cover 171.
Under the non-helping hand state, torsional spring 130 all is in free state, does not store energy, therefore the wearing person can normally walk under this state, has avoided knee joint booster to influence the wearing person and has normally walked. In the assisting state, when the wearer is in the standing state, 180 degrees are formed between the thigh support frame 110 and the shank support frame 120, the upper end torsion arm 131 and the lower end torsion arm 132 of the torsion spring 130 are also formed at 180 degrees, and the torsion spring 130 does not provide any assisting force; when a wearer walks to swing the legs, the knee joint is bent, so that the angle between the thigh support frame 110 and the shank support frame 120 of the knee joint booster is driven to change from 180 degrees to a state smaller than 180 degrees, the angle between the upper end torsion arm 131 and the lower end torsion arm 132 of the torsion spring 130 changes from 180 degrees to a state smaller than 180 degrees, and the torsion spring 130 stores energy gradually; when the wearer walks, the angle between the thigh support frame 110 and the shank support frame 120 gradually changes from less than 180 degrees to 180 degrees, and the angle between the upper end torque arm 131 and the lower end torque arm 132 of the torsion spring 130 also changes at the moment, and gradually changes from less than 180 degrees to 180 degrees, and the torsion spring 130 gradually releases energy to provide an assisting torque for the wearer.
Moreover, when the wearer is in an upright state, the tension/compression spring 140 is compressed into the tension/compression spring placement groove 112, so that a certain degree of thrust is generated between the tension/compression spring stopper 240 and the stopper wall 1121 at the upper end of the tension/compression spring placement groove 112, and a certain degree of pre-tightening torque is generated between the thigh support frame 110 and the shank support frame 120. And under the knee joint of the wearer is in the bending state, the shank support frame 120 rotates relative to the shank support frame 110, so the tension-compression spring limiting block 240 rotates towards the limiting wall 1121 at the upper end of the tension-compression spring arrangement groove 112, the distance between the tension-compression spring limiting block and the limiting wall is reduced, the tension-compression spring 140 is further compressed in the tension-compression spring arrangement groove 112, the thrust generated by the tension-compression spring 140 is increased, the assistance torque of the knee joint booster is increased to a certain extent, and the actual transportation load upper limit of the wearer is further increased.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. A knee booster, comprising: the device comprises a thigh support frame, a shank support frame, a torsion spring, a tension and compression spring, a thigh binding piece, a shank binding piece and a power-assisted change-over switch;
the thigh binding piece is connected with the upper end of the thigh support frame, and the shank binding piece is connected with the lower end of the shank support frame;
the lower end of the thigh support frame is hinged with the upper end of the shank support frame through a hinge shaft in the horizontal direction;
the torsional spring is sleeved on the hinge shaft and is positioned on the inner side of the thigh support frame and the outer side of the shank support frame; the upper end torque arm of the torsion spring extends towards the upper end direction of the thigh support frame; the lower end torsion arm of the torsion spring extends towards the lower end direction of the shank support frame and is fixedly connected with the outer wall of the shank support frame;
the inner side of the lower end of the thigh support frame is provided with an arc-shaped tension and compression spring placing groove which is concave inwards, the tension and compression spring placing groove is positioned on the outer side of the torsion spring, the upper end of the tension and compression spring placing groove is sealed with a limiting wall, and the lower end of the tension and compression spring placing groove is open; the upper end of the shank support frame is provided with a tension and compression spring limiting block which protrudes outwards, is positioned on the outer side of the torsion spring and is sealed to the opening at the lower end of the tension and compression spring placement groove; the tension and compression spring is compressed into the tension and compression spring placing groove;
the power-assisted change-over switch is connected with the thigh support frame in a sliding manner, slides downwards, and is inserted into a torque arm insertion hole formed in the power-assisted change-over switch downwards so as to fixedly lock the torsion spring; the power-assisted transfer switch slides upwards, and a torsion arm at the upper end of the torsion spring extends out of a torsion arm jack of the power-assisted transfer switch so as to separate and unlock the torsion spring.
2. A knee joint booster according to claim 1, wherein the lower end of the thigh support frame extends medially with a hinge tube passing through the medial and lateral sides, and the upper end of the shank support frame extends laterally with a hinge tube passing through the medial and lateral sides; the tail of the hinge shaft penetrates into the hinge pipe of the shank support frame from the inner side and penetrates out of the hinge pipe of the shank support frame from the outer side, the head of the hinge shaft is clamped to the inner side of the shank support frame, and the tail of the hinge shaft is fixedly connected with the fastening nut.
3. The knee joint booster according to claim 1 or 2, wherein a circular protection wall extends outward from the upper end of the lower leg support, the protection wall surrounding the outer periphery of the torsion spring; the height of one part of the protection wall is lower than that of the other part of the protection wall, and the part of the protection wall with the lower height corresponds to the bottom of the tension and compression spring placement groove, so that the tension and compression spring is separated from the torsion spring.
4. The booster of claim 3, wherein the tension and compression spring stopper is fixed to an outer side wall of the partial protective wall having a higher height and is connected to the partial protective wall having a lower height.
5. A knee joint booster as claimed in claim 3, wherein there is an inwardly extending POM transition ring on the medial side of the thigh support, surrounding the outer periphery of the torsion spring and located medial to the protective wall of the calf support;
a spring POM pad is provided in a space formed between the outer side of the lower leg support and a lower part of the protection wall.
6. A booster for a knee joint according to claim 1 or 2, wherein the booster changeover switch comprises: the switch comprises a switch front cover, a switch sliding block, a switch bottom plate and a button;
the thigh support frame is provided with a first sliding long hole which extends up and down and penetrates through the inner side and the outer side, the switch front cover is provided with a second sliding long hole which extends up and down and penetrates through the inner side and the outer side, the switch front cover is fixed to the outer side of the thigh support frame, and the second sliding long hole corresponds to the first sliding long hole;
the switch bottom plate is provided with an upper sliding groove and a lower sliding groove which are communicated, the lower end of the switch sliding block is provided with a torque arm jack which is concave upwards, and the switch sliding block is positioned in the sliding groove and is connected with the switch bottom plate in a sliding way; the switch base plate is fixed to the inner side of the thigh support frame, and the sliding groove faces the thigh support frame;
the rear end of the button is fixed on the front side of the switch sliding block, and the front end of the button sequentially penetrates through the first sliding long hole and the second sliding long hole to extend outwards.
7. The knee joint booster of claim 6, wherein a portion of the switch slider protrudes into the first sliding long hole.
8. A knee booster as set forth in claim 6 wherein the power-assist changeover switch further includes: a movable shaft and a return spring; the rear end of the moving shaft is fixed on the front side of the switch sliding block, the moving shaft is provided with a moving cavity with an opening facing to the front end, the reset spring is placed in the moving cavity, and the rear end of the button extends into the moving cavity and is in contact with the reset spring;
the upper end and the lower extreme of second slip slot hole are wider than the interlude of second slip slot hole, and the rear end of button is wider than the interlude of button, and the rear end of button is all wide than the upper end and the lower extreme of second slip slot hole, and the interlude of button is wider than the front end of button, and the interlude of button is all narrow than the upper end and the lower extreme of second slip slot hole, and the interlude of second slip slot hole is wider.
9. A knee booster as claimed in claim 8 further comprising a slot extending in the forward and rearward directions in the movable shaft and an axially extending rail at the rear end of the button, the rail slidably engaging the slot.
10. A knee booster as set forth in claim 8 wherein the power-assist changeover switch further includes: an ABS printing cover and an ABS printing button; the ABS printing cover is provided with a third sliding long hole, and the ABS printing button is provided with a button hole; the ABS printing cover is buckled on the switch front cover, the second sliding long hole corresponds to the third sliding long hole, the ABS printing button is located on the outer side of the ABS printing cover, and the front end of the button penetrates through the button hole.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210129396.4A CN114260883B (en) | 2022-02-11 | 2022-02-11 | Knee joint booster |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210129396.4A CN114260883B (en) | 2022-02-11 | 2022-02-11 | Knee joint booster |
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| CN114260883B CN114260883B (en) | 2024-05-17 |
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| CN114260883B (en) | 2024-05-17 |
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