CN213130625U - Flexible walking aid exoskeleton - Google Patents
Flexible walking aid exoskeleton Download PDFInfo
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- CN213130625U CN213130625U CN202020199333.2U CN202020199333U CN213130625U CN 213130625 U CN213130625 U CN 213130625U CN 202020199333 U CN202020199333 U CN 202020199333U CN 213130625 U CN213130625 U CN 213130625U
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Abstract
The application provides a flexible walking assisting exoskeleton which comprises a power device, a knee joint booster, an ankle joint booster, a second pulling structure and a power switching device, wherein the knee joint booster is used for providing power for the stretching movement of the knee joint of a user, and comprises a thigh wearing piece, a shank wearing piece and a first pulling structure for pulling the shank wearing piece and the thigh wearing piece to move relatively; the second pulling structure is used for driving the ankle joint booster, and the power-assisted switching device comprises a supporting plate, a movable support arranged on the supporting plate in a sliding mode and an electrostatic adsorption component used for locking the movable support on the supporting plate. The application provides a flexible helps capable ectoskeleton, through setting up helping hand auto-change over device, alright move the position moving state of support in the backup pad through helping hand auto-change over device's electrostatic absorption subassembly control, overcome flexible drive's ectoskeleton and only can carry out the not enough of specific joint helping hand, can effectively help capable to the user in the changeable complex environment of topography.
Description
Technical Field
The application belongs to the technical field of wearable exoskeletons, and particularly relates to a flexible walking aid exoskeletons.
Background
The wearable exoskeleton is a novel wearable robot formed by fusing a plurality of fields such as gait analysis, electromechanical integration, biomechanics and the like, and can be widely applied to the fields such as military, medical treatment, old-age assistance and the like. Wearable exoskeletons are mostly hydraulically driven, rigidly driven exoskeletons, which are often poorly coordinated with the flexible body of the human body. Therefore, the wearable exoskeleton gradually adopts the exoskeleton design driven by flexibility to apply assistance to a human body under the condition of not influencing the kinematics of the natural state of the human body so as to ensure that the lower limbs of the human body keep walking with natural gait.
However, currently, the exoskeleton using flexible drive usually applies assistance to human body by driving flexible output cable through a driving device, and only specific joint assistance can be performed on ankle joint, hip joint or knee joint of user, and on complex terrain, the assistance is provided only in limited way.
SUMMERY OF THE UTILITY MODEL
An object of the embodiment of the application is to provide a flexible walking aid exoskeleton, so as to solve the technical problem that the flexible driving exoskeleton in the prior art can only assist a specific joint.
In order to achieve the purpose, the technical scheme adopted by the application is as follows: there is provided a flexible walking exoskeleton comprising:
a power plant;
the knee joint booster is used for providing assistance for the stretching movement of the knee joint of a user, and comprises a thigh wearing part, a shank wearing part and a first pulling structure for pulling the shank wearing part and the thigh wearing part to move relatively;
the ankle joint booster is used for providing boosting force for the plantarflexion movement of the ankle joints of the user;
a second pulling structure for driving the ankle joint booster; and
the power-assisted switching device comprises a supporting plate, a movable support arranged on the supporting plate in a sliding mode and an electrostatic adsorption component used for locking the movable support on the supporting plate;
the electrostatic adsorption component is arranged on the supporting plate, the supporting plate is fixed on the shank wearing piece, the first pulling structure is respectively connected with the movable support and the output end of the power device, and the second pulling structure is respectively connected with the movable support and the ankle joint booster.
Optionally, the electrostatic adsorption component includes a first electrostatic adsorption plate, a second electrostatic adsorption plate in electrostatic adsorption fit with the first electrostatic adsorption plate, and a controller for controlling the electrostatic adsorption force between the first electrostatic adsorption plate and the second electrostatic adsorption plate, the first electrostatic adsorption plate is connected to the support plate, and the second electrostatic adsorption plate is connected to the movable support.
Optionally, the electrostatic adsorption assembly further includes two supporting blocks, each of the supporting blocks is fixed to the supporting plate, and the first electrostatic adsorption plate is fixedly connected to each of the supporting blocks.
Optionally, a gap through which the first electrostatic adsorption plate passes is formed on the second electrostatic adsorption plate.
Optionally, the second electrostatic adsorption plate includes two plate bodies arranged in parallel and at an interval, and a gap through which the first electrostatic adsorption plate passes is formed between the two plate bodies.
Optionally, the electrostatic adsorption assembly further includes clamping plates for respectively adjusting pressing forces between each of the plate bodies and the first electrostatic adsorption plate, and fasteners for fixing the two clamping plates, one surface of each of the plate bodies, which is far away from the first electrostatic adsorption plate, is supported on the corresponding clamping plate, and each of the clamping plates is connected to the movable support.
Optionally, the power switching device further comprises an elastic element connecting the movable support and the support plate.
Optionally, the wearing assembly further comprises a waist wearing piece for fixing the power device to the waist of the user.
Optionally, the first pulling structure includes a first assisting force cord and a first cord sleeve guiding the first assisting force cord to stretch, a top end of the first cord sleeve is fixed to the power device, a bottom end of the first cord sleeve is fixed to the thigh wearing part, one end of the first assisting force cord is connected to the moving support, and the other end of the first assisting force cord is connected to an output end of the power device.
Optionally, the ankle joint booster comprises a sole fixing sleeve, two rotating support arms respectively arranged at two opposite sides of the sole fixing sleeve, a leg fixing sleeve for being worn by a user's lower leg, and two leg support arms respectively arranged at two opposite sides of the leg fixing sleeve, wherein the bottom ends of the two leg support arms are respectively rotatably connected with the top ends of the two rotating support arms through pivots; the second pulling structure comprises a second assisting wire rope for pulling the sole fixing sleeve and the leg fixing sleeve to move relatively and a second wire rope sleeve for guiding the second assisting wire rope to stretch, the top end of the second wire rope sleeve is fixed on the supporting plate, the bottom end of the second wire rope sleeve is fixed on the leg fixing sleeve, one end of the second assisting wire rope is connected with the movable support, and the other end of the second assisting wire rope is connected with the sole fixing sleeve.
One or more technical solutions in the embodiments of the present application have at least one of the following technical effects:
the application provides a flexible helps capable ectoskeleton's beneficial effect lies in: compared with the prior art, this application flexibility helps capable ectoskeleton, through setting up helping hand auto-change over device, when electrostatic absorption subassembly is not circular telegram and is in non-adsorption state, remove the support and can freely slide in the backup pad, power device alright drive first pulling structure and drive second pulling structure, and then through second pulling structure drive ankle joint booster, alright provide supplementary helping hand to ankle joint's plantarflexion motion when the user steps on the ground. When the electrostatic adsorption component is electrified and is in an adsorption state, the movable support can be locked on the supporting plate through the electrostatic adsorption component, and the power device can drive the first pulling structure to pull the shank wearing piece and the thigh wearing piece to move relatively so as to provide assistance for the extension movement of the knee joint of the user and assist the user in going up and down a slope or walking up and down steps. Therefore, multi-joint switching power assisting of knee joints and ankle joints of a user can be realized, and the flexible walking assisting exoskeleton can effectively assist the user on complex terrain.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
FIG. 1 is a schematic perspective view of a flexible walking exoskeleton according to an embodiment of the present application;
FIG. 2 is a partially enlarged schematic view of FIG. 1;
fig. 3 is a schematic perspective view of a power-assisted switching device according to an embodiment of the present disclosure;
FIG. 4 is a partial enlarged view of FIG. 3;
fig. 5 is an exploded structural view of a power switching device according to an embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of an electrostatic adsorption assembly according to an embodiment of the present disclosure;
fig. 7 is a schematic structural view illustrating a first electrostatic attraction plate and a second electrostatic attraction plate according to an embodiment of the disclosure;
FIG. 8 is a partial enlarged view of FIG. 7;
fig. 9 is an exploded view of an electrostatic chuck assembly according to an embodiment of the present disclosure;
fig. 10 is a partially enlarged schematic view of fig. 1.
Wherein, in the figures, the respective reference numerals:
1-a power plant; 11-a drive motor; 12-a cartridge body;
2-knee joint booster; 21-thigh wear; 22-lower leg wear; 23-a first pulling configuration; 231-a first assist wire; 232-a first noose; 24-a first wire fixing seat;
3-ankle joint booster; 31-sole securing sleeves; 32-rotating the support arm; 33-leg fixation sleeves; 34-a leg support arm; 35-a second wire fixing seat; 36-a wire fixing device;
4-a second pulling structure; 41-a second assist cord; 42-a second rope sling;
5-a power-assisted switching device; 51-a support plate; 52-a mobile support; 53-an electrostatic adsorption component; 531-a first electrostatic adsorption plate; 532-a second electrostatic adsorption plate; 533-a support block; 534-a gap; 535-clamp plate; 536-a fastener; 537-backing plate; 54-a guide rail; 55-a slide block;
6-an elastic element; 7-waist wear; 8-force transmission binding band.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
It will be understood that when an element is referred to as being "connected" or "disposed" to another element, it can be directly on the other element or be indirectly connected to the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise. The meaning of "a number" is one or more unless specifically limited otherwise.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present application.
Referring to fig. 1, 2 and 4 together, the flexible walking exoskeleton of the present application will now be described. The flexible walking aid exoskeleton provided by the embodiment of the application comprises a power device 1, a knee joint booster 2, an ankle joint booster 3, a second pulling structure 4 and a power-assisted switching device 5, wherein the knee joint booster 2 is used for providing power assistance for the stretching movement of the knee joint of a user, and the knee joint booster 2 comprises a thigh wearing part 21, a shank wearing part 22 and a first pulling structure 23 for pulling the shank wearing part 22 and the thigh wearing part 21 to move relatively. The ankle joint booster 3 is used to provide assistance to the plantarflexion movement of the user's ankle joint, and the second pulling structure 4 is used to drive the ankle joint booster 3. The power-assisted switching device 5 comprises a supporting plate 51, a movable support 52 arranged on the supporting plate 51 in a sliding mode and an electrostatic adsorption component 53 used for locking the movable support 52 on the supporting plate 51, the electrostatic adsorption component 53 is arranged on the supporting plate 51, the supporting plate 51 is fixed on the lower leg wearing piece 22, the first pulling structure 23 is respectively connected with the movable support 52 and the output end of the power device 1, and the second pulling structure 4 is respectively connected with the movable support 52 and the ankle joint booster 3.
The application provides a flexible helps capable ectoskeleton because helping hand auto-change over device 5's setting makes flexible help capable ectoskeleton have two kinds of helping hand modes of knee joint helping hand mode and ankle joint helping hand mode: when a user walks on the flat ground, the flexible walking aid exoskeleton is in an ankle joint assistance mode, the controller controls the electrostatic adsorption component 53 to be electrified and be in a non-adsorption state, the movable support 52 can freely slide on the support plate 51, the power device 1 can drive the first pulling structure 23 to drive the second pulling structure 4, and then the second pulling structure 4 drives the ankle joint booster 3, so that auxiliary assistance can be provided for plantarflexion movement of an ankle joint when the user steps on the ground. When a user walks up and down a slope or up and down steps, the controller controls the electrostatic adsorption component 53 to be electrified, the electrostatic adsorption component 53 is in an adsorption state under the action of high voltage, the movable support 52 can be locked on the support plate 51 through the electrostatic adsorption component 53, and the power device 1 can drive the first pulling structure 23 to pull the shank wearing part 22 and the thigh wearing part 21 to move relatively, so that assistance is provided for the stretching movement of the knee joint of the user, and the user is assisted to walk up and down the slope or up and down steps.
When the user wears the walking aid, the flexible walking aid exoskeleton is switched into the ankle joint power assisting mode through the power assisting switching device 5 when the user walks on flat ground, so that power can be provided for the ankle joint when the user steps on the ground, and the user is assisted to keep normal gait walking on the flat ground. When the walking aid is in an ascending and descending slope or walking on an ascending and descending step, the flexible walking aid exoskeleton is switched into a knee joint power-assisted mode through the power-assisted switching device 5 to assist the knee joint to lift the gravity center of a human body, and then is switched into an ankle joint power-assisted mode to assist the ankle joint to complete a ground pedaling action so as to move the gravity center of the human body forward and complete the walking on the ascending and descending slope or the walking on the ascending and descending step. Therefore, the flexible walking-aid exoskeleton is designed by adopting flexible light materials, and has the advantages of simple and compact structure, light weight, reliability and high wearing comfort; the power-assisted switching of multiple joints is quickly realized by adopting an electrostatic adsorption principle, power assistance is provided for knee joints and ankle joints in the walking process of a human body, the physiological motion characteristics of lower limb joints in the normal walking process of the human body can be well matched, the energy consumed by the walking of a wearer is reduced, the walking ability of a user is improved, and especially, the power-assisted switching device can assist people with weak walking ability and part of old people to realize activities such as rehabilitation training.
Compared with the prior art, the flexible walking assisting exoskeleton provided by the application has the advantages that by the aid of the power switching device 5, when the electrostatic adsorption component 53 is not powered on and is in a non-adsorption state, the movable support 52 can freely slide on the support plate 51, the power device 1 can drive the first pulling structure 23 to drive the second pulling structure 4, the ankle joint booster 3 is driven by the second pulling structure 4, and auxiliary assistance can be provided for plantarflexion movement of an ankle joint when a user steps on the ground. When the electrostatic adsorption component 53 is powered on and is in an adsorption state, the movable support 52 can be locked on the support plate 51 through the electrostatic adsorption component 53, and the power device 1 can drive the first pulling structure 23 to pull the lower leg wearing part 22 and the thigh wearing part 21 to perform relative motion so as to provide assistance for the extension motion of the knee joint of the user and assist the user in going up and down a slope or walking up and down a step. Therefore, multi-joint switching power assistance to knee joints and ankle joints of a user can be realized through the power assistance switching device 5, the defect that the flexible driving exoskeleton can only carry out specific joint power assistance is overcome, and the flexible walking assisting exoskeleton can effectively assist the user on complex terrains.
The first pulling structure 23 in the present application is preferably a bowden cable with a stretching function, and the bowden cable includes a bowden cable core and a bowden cable shell, and the specific structure thereof is well known to those skilled in the art and will not be described herein. Of course, the first pulling structure 23 may also be a first assisting force cord 231 and a support member supporting the first assisting force cord 231, and the first assisting force cord 231 is supported on the human body through the support member, so as to prevent the first assisting force cord 231 from generating a tightening pressure on the human body in the stretching process, which may cause discomfort to the human body. Specifically, the first assisting force cord 231 may be one of a steel cord, a kevlar cord or a carbon fiber cord, but is not limited to the steel cord, the kevlar cord or the carbon fiber cord, and the support member may be a support block 533 or a support plate 51 having a thread passing hole for the first assisting force cord 231 to pass through, and may be selected according to actual needs, and is not limited herein.
Similarly, the second pulling structure 4 in the present application is preferably a bowden cable with a tensile function, and the bowden cable includes a bowden cable core and a bowden cable shell, and the specific structure thereof is well known to those skilled in the art and will not be described herein. Of course, the second pulling structure 4 may also be a second assisting cord 41 and a support member supporting the second assisting cord 41, and the second assisting cord 41 is supported on the lower limbs of the human body by the support member, so as to avoid the second assisting cord 41 from generating a tight compression effect on the lower limbs of the human body in the stretching process, which may cause discomfort to the human body. Specifically, the second assisting force cord 41 may be one of a steel cord, a kevlar cord or a carbon fiber cord, but is not limited to the steel cord, the kevlar cord or the carbon fiber cord, and the support member may be a support block 533 or a support plate 51 having a thread passing hole for the second assisting force cord 41 to pass through, and may be selected according to actual needs, and is not limited herein.
In another embodiment of the present application, referring to fig. 6, 7 and 9, the electrostatic adsorption component 53 includes a first electrostatic adsorption plate 531, a second electrostatic adsorption plate 532 in electrostatic adsorption cooperation with the first electrostatic adsorption plate 531, and a controller (not shown) for controlling the electrostatic adsorption force between the first electrostatic adsorption plate 531 and the second electrostatic adsorption plate 532, wherein the first electrostatic adsorption plate 531 is connected to the support plate 51, and the second electrostatic adsorption plate 532 is connected to the movable support 52.
In this embodiment, the first electrostatic adsorption plate 531 arranged on the support plate 51 and the second electrostatic adsorption plate 532 arranged on the movable support 52 generate a static friction force after being powered on, so as to rapidly lock the movable support 52 on the support plate 51, thereby achieving the purpose that the power-assisted switching device 5 rapidly switches the power assistance to the knee joint and the ankle joint of the user, and the electrostatic adsorption assembly 53 has a fast response speed and a good locking effect. In addition, the first electrostatic adsorption plate 531 and the second electrostatic adsorption plate 532 after being energized generate static friction force, so that vibration damping can be formed in the moving direction of the movable support 52, the vibration amplitude generated by the second assisting force cord 41 driving the movable support 52 to reciprocate is reduced, the impact force of the assisting force switching device 5 on the human shank is buffered, and the assisting effect of the ankle joint is enhanced to a certain extent.
In another embodiment, the first electrostatic adsorption plate 531 may be replaced by a first electrostatic adsorption sheet (or a first electrostatic adsorption film), and the second electrostatic adsorption plate 532 may be replaced by a second electrostatic adsorption sheet or a second electrostatic adsorption film. In order to further improve the electrostatic adsorption performance between the first electrostatic adsorption sheet (or the first electrostatic adsorption film) and the second electrostatic adsorption sheet (or the second electrostatic adsorption film), and to have a sufficient static friction force and a sufficient proof stress strength, the first electrostatic adsorption sheet (or the first electrostatic adsorption film) is formed by stacking at least two electrostatic adsorption films, and the second electrostatic adsorption sheet (or the second electrostatic adsorption film) is formed by stacking at least two electrostatic adsorption films. Wherein, the electrostatic adsorption film adopts an electrostatic adsorption film with good electrostatic adsorption performance.
In addition, the number of layers of the electrostatic adsorption film can be set according to the requirement for the first electrostatic adsorption sheet (or the first electrostatic adsorption film) and the first electrostatic adsorption sheet (or the first electrostatic adsorption film), that is, the first electrostatic adsorption sheet (or the first electrostatic adsorption film) can contain two or more layers of electrostatic adsorption films, the second electrostatic adsorption sheet (or the second electrostatic adsorption film) can contain two or more layers of electrostatic adsorption films, and the multiple layers of the first electrostatic adsorption sheet (or the first electrostatic adsorption film) and the multiple layers of the second electrostatic adsorption sheet (or the second electrostatic adsorption film) are mutually crossed and overlapped, so that the static friction force can be increased.
In another embodiment of the present application, referring to fig. 2, 5 and 6, the length direction of the first electrostatic absorption plate 531 and the length direction of the second electrostatic absorption plate 532 are perpendicular to each other.
In this embodiment, the first electrostatic adsorption plate 531 is a rectangular electrostatic adsorption film or electrostatic adsorption sheet, and the second electrostatic adsorption plate 532 is also a rectangular electrostatic adsorption film or electrostatic adsorption sheet. The first electrostatic adsorption plate 531 extends in the vertical direction in the longitudinal direction, the second electrostatic adsorption plate 532 extends in the horizontal direction in the longitudinal direction, and the first electrostatic adsorption plate 531 is perpendicular to the second electrostatic adsorption plate 532 in the longitudinal direction, so that the second electrostatic adsorption plate 532 is perpendicular to the first electrostatic adsorption plate 531, and even if the second electrostatic adsorption plate 532 is cross-stacked with the first electrostatic adsorption plate 531, the moving stroke of the movable support in the non-energized state of the electrostatic adsorption module 53 can be increased, the electrostatic adsorption force generated by energizing the first electrostatic adsorption plate 531 and the second electrostatic adsorption plate 532 can be better utilized, the movable support 52 and the support plate 51 are not easy to slide relative to each other, and the movable support 52 can be stably locked on the support plate 51. In addition, the attraction force generated by the two mutually crossed second electrostatic attraction plates 532 and the first electrostatic attraction plate 531 after being electrified is large, which is beneficial to increasing the static friction force, and the magnitude of the static friction force can be changed by changing the input voltage, so that the locking force of the electrostatic attraction assembly 53 on the movable support 52 can be dynamically adjusted.
In another embodiment of the present application, referring to fig. 3, 5 and 9, the electrostatic absorption assembly 53 further includes two supporting blocks 533, each supporting block 533 is fixed on the supporting plate 51, and the first electrostatic absorption plate 531 is fixedly connected to each supporting block 533.
In this embodiment, by providing the two supporting blocks 533, the two supporting blocks 533 are fixed on the supporting plate 51, the first electrostatic adsorption plate 531 is respectively fixedly connected to the two supporting blocks 533 and the supporting plate 51, which is beneficial to enhancing the connection stability of the first electrostatic adsorption plate 531 and the supporting plate 51, and meanwhile, it is ensured that the first electrostatic adsorption plate 531 and the second electrostatic adsorption plate 532 have a larger contact area and keep good contact, so that the electrostatic adsorption force generated after the first electrostatic adsorption plate 531 and the second electrostatic adsorption plate 532 are powered on can be increased, and further, the locking stability of the electrostatic adsorption component 53 to the movable support 52 is improved.
In another embodiment of the present application, referring to fig. 5, fig. 6 and fig. 7, a gap 534 is opened on the second electrostatic absorption plate 532 for the first electrostatic absorption plate 531 to pass through.
In this embodiment, the second electrostatic adsorption plate 532 is provided with the gap 534 through which the first electrostatic adsorption plate 531 passes, so that the first electrostatic adsorption plate 531 is located in the gap 534 of the second electrostatic adsorption plate 532, and the two sides of the first electrostatic adsorption plate 531 can be kept in contact with the second electrostatic adsorption plate 532 respectively, thereby further increasing the contact area between the first electrostatic adsorption plate 531 and the second electrostatic adsorption plate 532, and making the two sides of the first electrostatic adsorption plate 531 in good contact with the second electrostatic adsorption plate 532 respectively, so as to increase the electrostatic adsorption force generated after the first electrostatic adsorption plate 531 and the second electrostatic adsorption plate 532 are electrified, and enhance the stability of the electrostatic adsorption component 53 locking the movable support 52.
In another embodiment of the present application, referring to fig. 7, 8 and 9, the second electrostatic absorption plate 532 includes two plate bodies arranged in parallel and at an interval, and a gap 534 is formed between the two plate bodies for the first electrostatic absorption plate 531 to pass through.
In this embodiment, the second electrostatic adsorption plate 532 includes two parallel plate bodies arranged at an interval and a base plate 537 supporting the two plate bodies, so that a gap 534 capable of accommodating the first electrostatic adsorption plate 531 is formed between the two plate bodies, and it can be ensured that the electrostatic adsorption component 53 is under the condition of no power-on, so that the second electrostatic adsorption plate 532 can smoothly and stably move relative to each other along the length direction of the first electrostatic adsorption plate 531, thereby ensuring the stability and reliability of the sliding movement of the movable support 52 along the support plate 51, and being beneficial to enhancing the power-assisted effect of the ankle joint.
In another embodiment of the present application, referring to fig. 6, 8 and 9, the electrostatic absorption assembly 53 further comprises clamping plates 535 for adjusting the pressing force between each plate and the first electrostatic absorption plate 531, and fasteners 536 for fixing the two clamping plates 535, wherein one surface of each plate, which is far away from the first electrostatic absorption plate 531, is supported on the corresponding clamping plate 535, and each clamping plate 535 is connected to the movable support 52.
In this embodiment, by providing the clamping plates 535 for respectively adjusting the pressing force between each plate and the first electrostatic adsorption plate 531, each plate is in good contact with the corresponding plate surface of the first electrostatic adsorption plate 531, so as to increase the electrostatic adsorption force generated after the first electrostatic adsorption plate 531 and the second electrostatic adsorption plate 532 are energized, thereby improving the stability of the electrostatic adsorption assembly 53 to lock the movable support 52. Moreover, due to the arrangement of the clamping plates 535, the firmness of each plate body is enhanced, and the working stability and reliability of the electrostatic adsorption assembly 53 are improved. Specifically, the fastener 536 is a common fastener such as a bolt, a stud or a screw,
in another embodiment of the present application, referring to fig. 2, 3 and 4, the assisted switching device 5 further includes an elastic element 6 connecting the supporting plate 51 and the movable support 52.
In this embodiment, by providing the elastic element 6, the movable support 52 is connected to the support plate 51 through the elastic element 6, so that when the electrostatic adsorption component 53 is in a non-adsorption state, the electrostatic adsorption component 53 is rapidly reset, the movable support 52 can be rapidly and accurately locked on the support plate 51, and the knee joint assistance effect is enhanced to a certain extent. And through the action of the damping force of the elastic element 6, the vibration amplitude generated by the reciprocating motion of the movable support 52 driven by the second power-assisted cord 41 is reduced, the impact force of the power-assisted switching device 5 on the lower leg of the human body is buffered, and the power-assisted effect of the ankle joint is enhanced to a certain extent.
Preferably, the elastic element 6 is an elastic rope or an elastic band with a large stiffness coefficient, wherein two annular elastic ropes or elastic bands are used to connect the support plate 51 and the movable support 52, respectively, so that the support plate 51 and the movable support 52 can be stably connected to quickly reset the electrostatic adsorption component 53 when the electrostatic adsorption component 53 is in a non-adsorption state, and a good damping and buffering effect can be achieved. Of course, the elastic element 6 may also be a spring or other elastic article made of elastic material, which is specifically selected according to actual needs and is not limited herein.
The first pulling structure 23 includes a first assisting force cord 231 and a first cord sleeve 232 guiding the first assisting force cord 231 to stretch, a top end of the first cord sleeve 232 is fixed on the power device 1, a bottom end of the first cord sleeve 232 is fixed on the thigh wearing part 21, one end of the first assisting force cord 231 is connected with the movable support 52, and the other end of the first assisting force cord 231 is connected with an output end of the power device 1.
In this embodiment, the first rope loop 232 guiding the stretching of the first assisting force rope 231 is arranged, so that on one hand, the stability of the stretching of the first assisting force rope 231 is enhanced, the first assisting force rope 231 can better pull the lower leg wearing piece 22 and the thigh wearing piece 21 to move relatively, and a moment rotating around the knee joint is generated at the knee joint of the user, so as to provide assisting force for the stretching movement of the knee joint of the user. On the other hand, the first assist string 231 reduces the strong pressing force on the muscle when the human body is tightened in the process of pulling the lower leg wearing member 22 and the upper leg wearing member 21 to perform the relative movement, thereby enhancing the comfort of the user.
In another embodiment of the present application, please refer to fig. 1 together, the wearing assembly further comprises a waist wearing part 7 for fixing the power device 1 on the waist of the user, so as to conveniently bind the power device 1 providing the stretching power to the first power assisting cord 231 and the second power assisting cord 41 on the waist of the user, reduce the weight of the user wearing the flexible walking assisting exoskeleton on the lower limbs, and realize that the user keeps normal and natural gait walking.
In another embodiment of the present application, referring to fig. 1, the knee joint booster further includes a first wire fixing seat 24 fixed on the thigh wearing part 21, and the first wire fixing seat 24 is provided with a first through hole for the first boosting cord 231 to pass through.
In this embodiment, be provided with first line fixing seat 24 on shank wearing piece 22, first helping hand cotton rope 231 is through the first guide that passes the hole on first line fixing seat 24, can pull shank wearing piece 22 towards thigh wearing piece 21 motion steadily, can avoid the oppression of first helping hand cotton rope 231 to the user thigh, and prevent thigh wearing piece 21 to the tensile interference of first helping hand cotton rope 231, thereby guarantee that first helping hand cotton rope 231 can pull shank wearing piece 22 towards thigh wearing piece 21 motion steadily, make human knee joint natural motion, improve the stability and the helping hand effect of knee joint helping hand.
In another embodiment of the present application, referring to fig. 1 in addition, the flexible walking exoskeleton further comprises a force transfer strap 8 connected to the first wire fixation seat 24, wherein the end of the force transfer strap 8 remote from the first wire fixation seat 24 is connected to the waist wearing element 7.
In this embodiment, when using, pass power bandage 8 from the upper portion of user's knee joint, divide two to bypass the thigh both sides, and be fixed in buttockss portion below, make the power that acts on thigh wearing piece 21 decompose to the waist and wear on 7, piece 7 acts on the human pelvis is worn to the rethread waist, thereby reduce thigh wearing piece 21 to the effort of user's thigh, the comfort that the reinforcing user shank was dressed, reduce substantially that flexible helps capable ectoskeleton to the influence of the normal free activity of human shank, thereby can not destroy the natural biomechanics characteristic of human walking.
Preferably, the force transfer strap 8 is connected to the waist wear 7 by a hook and loop fastener.
In another embodiment of the present application, referring to fig. 1, the power device 1 further includes a driving motor 11, a case 12 for accommodating the driving motor 11, and a battery (not shown in the figure) for supplying power to the driving motor 11, wherein the driving motor 11 is disposed in the case 12, and the case 12 is fixed to the waist of the user through the waist wearing piece 7. Moreover, the belt is an elastic bandage, and the box body 12 and the battery are symmetrically distributed on the front side and the rear side (or the left side and the right side) of the waist part through the elastic bandage, so that the belt is convenient to wear and disassemble, and is beneficial to the uniform distribution of the whole weight and the human body load of the power device 1, thereby effectively reducing the adverse effect and the uncomfortable feeling of the portable power device 1 on the normal walking of the human body, and enabling the walking to be better kept in a natural and efficient gait. And a reel (not shown) is connected to an output shaft of the driving motor 11, and an end of the first assist line 231 remote from the movable holder 52 is fixed to the reel so that the reel is driven by the driving motor 11 to wind the first assist line 231. Of course, the driving motor 11 may also be replaced by a driving mechanism such as a pneumatic motor, a pneumatic driving mechanism, or a hydraulic driving mechanism, so as to realize the driving function of the power device 1 to drive the first assisting wire 231, which may be specifically selected according to actual needs, and is not limited herein.
In order to realize quick wearing and releasing of the wearing components of the flexible walking assisting exoskeleton when the flexible walking assisting exoskeleton is worn and improve comfort when the best assisting effect is achieved, the thigh wearing piece 21, the shank wearing piece 22 and the waist wearing piece 7 are all wearable straps convenient to be tied on a human body. Preferably, the two ends of the wearable strap are connected through a magic buckle (Velcro) so as to be convenient for quick wearing and adjustment.
Preferably, the waist wearing part 7 is a waistband which adopts a flexible bandage, so that the influence of wearing components on the normal motion of a human body can be reduced to the maximum extent when the knee joint is assisted, and the assistance effect and the wearing comfort are improved. Waist wearing piece 7 realizes the fixed of waist through gluing buckle structure such as magic subsides to satisfy the demand that different users dressed.
Preferably, the thigh wearing part 21 adopts a flexible bandage, so that the influence of wearing components on the normal movement of a human body can be reduced to the maximum extent when the knee joint is assisted, and the assistance effect and the wearing comfort are improved. And the thigh wearing part 21 is provided with a reinforcing rib which is a nylon woven belt of an inverted V-shaped or a straight-shaped structure sewed on the flexible binding belt (the thigh wearing part 21) so as to enhance the rigidity of the flexible binding belt and the decomposition effect of force. Wherein, the thigh wearing piece 21 realizes the fixation of the thigh of the user through the hook and loop fastener structure such as the magic tape, so as to satisfy the wearing requirements of different users.
Preferably, the lower leg wearing part 22 adopts a flexible bandage, so that the influence of wearing components on the normal movement of a human body can be reduced to the maximum extent when the knee joint is assisted, and the assistance effect and the wearing and using comfort are improved. And a reinforcing rib is provided on the lower leg wearing piece 22, and the reinforcing rib is a flexible cushion block connected with the flexible binding band.
In another embodiment of the present application, please refer to fig. 10 together, the ankle joint booster 3 includes a sole fixing sleeve 31, two rotating supporting arms 32 respectively disposed at two opposite sides of the sole fixing sleeve 31, a leg fixing sleeve 33 for being worn by a lower leg of a user, and two leg supporting arms 34 respectively disposed at two opposite sides of the leg fixing sleeve 33, wherein bottom ends of the two leg supporting arms 34 are respectively rotatably connected to top ends of the two rotating supporting arms 32 through pivots; the second pulling structure 4 comprises a second assisting force cord 41 for pulling the sole fixing sleeve 31 and the leg fixing sleeve 33 to move relatively and a second cord sleeve 42 for guiding the second assisting force cord 41 to stretch, the top end of the second cord sleeve 42 is fixed on the supporting plate 51, the bottom end of the second cord sleeve 42 is fixed on the leg fixing sleeve 33, one end of the second assisting force cord 41 is connected with the moving support 52, and the other end of the second assisting force cord 41 is connected with the sole fixing sleeve 31.
In this embodiment, the leg fixing sleeve 33 of the ankle joint booster 3 is provided with a second wire fixing seat 35, and the second wire fixing seat 35 is provided with a second through hole for the second boosting cord 41 to pass through. The fixed cover 31 of sole and the fixed cover 33 of shank are bound in user's sole and user's shank respectively by the bandage, are equipped with the solidus ware 36 that is used for fixed connection second helping hand cotton rope 41 on the fixed cover 31 of sole, and the position that the second that sets up position and the second on the solid line seat 35 of solidus ware 36 passed the hole is corresponding to improve the transmission efficiency and the transmission precision of second helping hand cotton rope 41, can stably carry out supplementary helping hand to user's foot ankle joint high-efficiently. In addition, the top end of the first rope loop 232 is fixed on the power device 1, the bottom end of the first rope loop 232 is fixed on a supporting block 533 close to the thigh wearing part 21, and a first wire guide hole for the first assisting force rope 231 to pass through is arranged on the supporting block 533; the bottom end of the second rope loop 42 is fixed on a supporting block 533 close to the ankle wearing part, and a second wire hole for the second assisting force rope 41 to pass through is arranged on the supporting block 533.
In this embodiment, by providing the first rope loop 232 guiding the stretching of the first assisting force rope 231, on one hand, the stability of the stretching of the first assisting force rope 231 is enhanced, so that the first assisting force rope 231 can better pull the ankle wearing piece and the lower leg wearing piece 22 to move relatively, and a moment rotating around the ankle joint is generated at the ankle joint of the user, so as to provide assisting force for the plantarflexion movement of the ankle joint of the user. On the other hand, the pressing force of the first assisting force string 231 on the lower leg of the human body is reduced in the process of pulling the ankle wearing member and the lower leg wearing member 22 to move relatively, and the comfort of the user is enhanced.
In another embodiment of the present application, referring to fig. 5, the power switching device 5 further includes a guide rail 54 for guiding the movable support 52 to move, and a slide block 55 slidably mounted on the guide rail 54, wherein the guide rail 54 is fixed on the support plate 51, and the movable support 52 is connected to the slide block 55.
In this embodiment, the movable support 52 moves on the support plate 51 under the guidance of the linear sliding mechanism in which the slider 55 and the guide rail 54 are in sliding fit, so that the stability is high, and the ankle joint assisting effect is improved. Specifically, the linear sliding mechanism includes two guide rails 54 respectively extending in the vertical direction and two sliding blocks 55 respectively slidably engaged with the two guide rails 54, the two guide rails 54 are arranged side by side and spaced on the support plate 51, and the two sliding blocks 55 are respectively fixedly connected with the movable support 52. Of course, the number of the guide rails 54 may be 3 or 4, and the number is not limited herein. Also, a plurality of sliders 55 may be provided on each rail 54 to improve stability. More specifically, the guide rail 54 is provided with a guide groove on the inner side thereof, and the slider 55 is provided with a dovetail block, a triangular block, a rectangular block, or the like on both sides thereof to be fitted with the guide groove.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. A flexible walking exoskeleton comprising:
a power plant;
the knee joint booster is used for providing assistance for the stretching movement of the knee joint of a user, and comprises a thigh wearing part, a shank wearing part and a first pulling structure for pulling the shank wearing part and the thigh wearing part to move relatively;
the ankle joint booster is used for providing boosting force for the plantarflexion movement of the ankle joints of the user;
a second pulling structure for driving the ankle joint booster; and
the power-assisted switching device comprises a supporting plate, a movable support arranged on the supporting plate in a sliding mode and an electrostatic adsorption component used for locking the movable support on the supporting plate;
the electrostatic adsorption component is arranged on the supporting plate, the supporting plate is fixed on the shank wearing piece, the first pulling structure is respectively connected with the movable support and the output end of the power device, and the second pulling structure is respectively connected with the movable support and the ankle joint booster.
2. The flexible walking exoskeleton of claim 1 wherein said electrostatic adsorption assembly comprises a first electrostatic adsorption plate, a second electrostatic adsorption plate in electrostatic adsorption engagement with said first electrostatic adsorption plate, and a controller for controlling the amount of electrostatic adsorption force between said first electrostatic adsorption plate and said second electrostatic adsorption plate, said first electrostatic adsorption plate is connected to said support plate, and said second electrostatic adsorption plate is connected to said movable support.
3. The flexible walking exoskeleton of claim 2 wherein said electrostatic adsorption module further comprises two support blocks, each of said support blocks being fixed to said support plate, said first electrostatic adsorption plate being fixedly attached to each of said support blocks.
4. The flexible walking-aid exoskeleton of claim 2 wherein said second electrostatic adsorption plate defines a gap through which said first electrostatic adsorption plate passes.
5. The flexible walking exoskeleton of claim 2 wherein said second electrostatic adsorption plate comprises two plates disposed in parallel and spaced apart to form a gap therebetween through which said first electrostatic adsorption plate passes.
6. The flexible walking exoskeleton of claim 5 wherein said electrostatic adsorption assembly further comprises clamping plates for adjusting the compressive force between each of said plates and said first electrostatic adsorption plate, respectively, and fasteners for securing said clamping plates, wherein the surface of each of said plates remote from said first electrostatic adsorption plate is supported on the corresponding clamping plate, and each of said clamping plates is connected to said movable support.
7. The flexible walking exoskeleton of claim 1 wherein said power-assisted switching device further comprises a resilient member connecting said mobile support to said support plate.
8. The flexible walking exoskeleton of claim 1 further comprising waist wear for securing said powered device to the waist of a user.
9. The flexible walking exoskeleton of claim 1 wherein said first pulling mechanism comprises a first assist cord and a first cord sleeve for guiding said first assist cord to stretch, wherein said first cord sleeve is attached to said power unit at a top end thereof, said first cord sleeve is attached to said thigh-wearing member at a bottom end thereof, one end of said first assist cord is connected to said movable support, and the other end of said first assist cord is connected to an output end of said power unit.
10. The flexible walking exoskeleton of any one of claims 1 to 9 wherein said ankle joint booster comprises a sole fixing sleeve, two rotational support arms disposed on opposite sides of said sole fixing sleeve, respectively, a leg fixing sleeve for wearing the lower leg of the user, and two leg support arms disposed on opposite sides of said leg fixing sleeve, respectively, wherein the bottom ends of said two leg support arms are pivotally connected to the top ends of said two rotational support arms by pivots, respectively; the second pulling structure comprises a second assisting wire rope for pulling the sole fixing sleeve and the leg fixing sleeve to move relatively and a second wire rope sleeve for guiding the second assisting wire rope to stretch, the top end of the second wire rope sleeve is fixed on the supporting plate, the bottom end of the second wire rope sleeve is fixed on the leg fixing sleeve, one end of the second assisting wire rope is connected with the movable support, and the other end of the second assisting wire rope is connected with the sole fixing sleeve.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020199333.2U CN213130625U (en) | 2020-02-21 | 2020-02-21 | Flexible walking aid exoskeleton |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020199333.2U CN213130625U (en) | 2020-02-21 | 2020-02-21 | Flexible walking aid exoskeleton |
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| CN213130625U true CN213130625U (en) | 2021-05-07 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113288720A (en) * | 2021-06-01 | 2021-08-24 | 法罗适(上海)医疗技术有限公司 | Line drive transmission system of soft body rehabilitation robot |
| CN114404229A (en) * | 2021-12-31 | 2022-04-29 | 华南理工大学 | Flexible wearable object actuator for lower limb rehabilitation |
| CN114948579A (en) * | 2021-12-15 | 2022-08-30 | 南方科技大学 | Ankle exoskeleton and power-assisted control method and device thereof, and readable storage medium |
-
2020
- 2020-02-21 CN CN202020199333.2U patent/CN213130625U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113288720A (en) * | 2021-06-01 | 2021-08-24 | 法罗适(上海)医疗技术有限公司 | Line drive transmission system of soft body rehabilitation robot |
| CN114948579A (en) * | 2021-12-15 | 2022-08-30 | 南方科技大学 | Ankle exoskeleton and power-assisted control method and device thereof, and readable storage medium |
| CN114948579B (en) * | 2021-12-15 | 2023-03-24 | 南方科技大学 | Ankle exoskeleton and power-assisted control method and device thereof, and readable storage medium |
| CN114404229A (en) * | 2021-12-31 | 2022-04-29 | 华南理工大学 | Flexible wearable object actuator for lower limb rehabilitation |
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