CN214604354U - Upper limb power assisting device - Google Patents

Abstract

The utility model provides an upper limb power assisting device, which comprises a fixed vest and an arm auxiliary framework; the arm auxiliary framework comprises two pairs; the arm auxiliary framework comprises a fixing part for fixing the arm auxiliary framework at the back position of the fixing vest, a stress supporting rod, an elastic auxiliary component and an arm connecting plate; one end of the stressed supporting rod is movably connected with the fixing part; the other end of the stress supporting rod is movably connected with the arm connecting plate through the elastic auxiliary component. Partial gravity of the workpiece is acted from the large arm of the hand of the user to the hand supporting rod, the mounting shell and the compression spring, the cam, the stressed supporting rod and the fixing part to the waist of the user, so that the load borne by the arm of the user is reduced. Does not need an external power source, has simple and practical structure and can provide reasonable supporting force.

Description

Upper limb power assisting device

Technical Field

The utility model relates to the field of medical equipment, concretely relates to upper limbs booster unit.

Background

In the production activities of automobiles, construction, shipbuilding, casting and the like, workers are often required to hold tools to continuously operate and carry out heavy work on shoulders or the head and above, and great pressure is brought to the joints and muscles of the shoulders, arms and the back, so that the continuous work time of the workers is greatly shortened. In the long run, the work efficiency is easily reduced, and the hidden danger of the system tissues such as the muscle and the skeleton of workers can be caused.

The assistance exoskeleton is a support structure worn on a body at present, can play roles in rehabilitation, medical treatment, energization and the like in specific activities, and is a solution capable of effectively aiming at the problems. Most of the existing power-assisted exoskeleton systems are driven by motors, pneumatic devices or hydraulic devices, and have the disadvantages of heavy weight, high cost and difficulty in carrying.

And because current product widely uses moment generator or elasticity stretching strap, leads to the holding power great all the time, can't relax when not needing the holding power, lifts the arm for a long time and leads to wearing to experience not good, and wears to take off inconveniently. The design of a single fixed power source leads to constant supporting force or changes along with the position, the force can only be changed by replacing power parts, and the complicated and changeable actual working environment is difficult to meet.

SUMMERY OF THE UTILITY MODEL

In view of the above, embodiments of the present invention provide an upper limb assist device that overcomes or at least partially solves the above problems.

An upper limb power assisting device comprises a fixed vest and an arm auxiliary framework; the arm auxiliary framework comprises two pairs; the arm auxiliary framework comprises a fixing part for fixing the arm auxiliary framework at the back position of the fixing vest, a stress supporting rod, an elastic auxiliary component and an arm connecting plate;

one end of the stressed supporting rod is movably connected with the fixing part; the other end of the stressed supporting rod is movably connected with the arm connecting plate through the elastic auxiliary component;

the stationary vest is worn on the upper body of the user when the user wears the frame; the fixing part is arranged at the back waist position of the user through the fixing vest; the arm connecting plate is fixed on the forearm of the user through a binding band; the elastic auxiliary component is arranged on the upper arm of the user, and the connecting position of the elastic auxiliary component and the arm connecting plate corresponds to the elbow joint position of the user;

when the upper limbs of the user are lifted, the elastic auxiliary assembly provides the assistance force in the same direction as the extending direction of the arms through the built-in spring structure.

Further, elasticity auxiliary assembly includes cam spring mechanism and hand die-pin, cam spring mechanism includes installation shell, cam and compression spring, cam fixed connection in the second end of atress bracing piece, just the cam with the installation shell rotates relatively and is located the installation cavity of installation shell, compression spring install compressively by pretension in the installation cavity of installation shell, compression spring's first end butt in on the wheel face of cam, compression spring's second end butt in on the installation cavity wall of installation shell, the first end of hand die-pin with installation shell fixed connection, the second end of hand die-pin is used for binding on user's the big arm of hand.

Furthermore, the upper limb power assisting device further comprises an angle adjusting component, the first end of the angle adjusting component is connected with the second end of the stressed supporting rod in an angle adjustable mode, and the second end of the angle adjusting component is fixedly connected with the cam.

Further, angle adjusting part includes connecting rod, spliced pole, regulation locking screw and connecting axle, spliced pole fixed connection in the second of atress bracing piece is served, the first end of connecting rod is equipped with two through-holes, and one of them through-hole rotationally overlaps on the spliced pole, regulation locking screw will through another through-hole the connecting rod with the atress bracing piece is fixed, the first end fixed connection of connecting axle in the second of connecting rod is held, the second of connecting axle end fixed connection in the cam, just the connecting axle with but rotate relatively between the installation shell.

Further, the connecting shaft is connected with the mounting shell through two bearings, and the cam is located between the two bearings.

Furthermore, the cam spring mechanism further comprises a pre-tightening adjusting screw and an adjusting knob, the pre-tightening adjusting screw is connected to the mounting shell in a threaded mode, the second end of the compression spring abuts against the first end of the pre-tightening adjusting screw, the adjusting knob is connected to the second end of the pre-tightening adjusting screw, and the adjusting knob and the pre-tightening adjusting screw rotate synchronously.

Further, the cam spring mechanism further comprises a cam follower which is slidably located in the mounting cavity of the mounting shell, the first end of the compression spring is fixedly connected to the cam follower, and the cam follower abuts against the wheel surface of the cam.

Furthermore, the stressed supporting rod is a telescopic supporting rod which can be telescopically adjusted.

Further, the fixed part includes waist laminating piece, connecting seat, universal joint bearing and bandage, connecting seat fixed connection in waist laminating piece, universal joint bearing's outer lane is fixed in the connecting seat, the first end of flexible bracing piece with universal joint bearing's inner circle fixed connection, the bandage is connected in order to be used for tighten user's waist on the waist laminating piece.

Further, the upper limb power assisting device further comprises an arm connecting plate, the arm connecting plate is fixed to the second end of the hand supporting rod, and the arm connecting plate is used for being attached to a large arm of a hand of a user to be tightened.

The application has the following advantages:

in the embodiment of the application, the device comprises a fixed vest and an arm auxiliary framework; the arm auxiliary framework comprises two pairs; the arm auxiliary framework comprises a fixing part for fixing the arm auxiliary framework at the back position of the fixing vest, a stress supporting rod, an elastic auxiliary component and an arm connecting plate; one end of the stressed supporting rod is movably connected with the fixing part; the other end of the stressed supporting rod is movably connected with the arm connecting plate through the elastic auxiliary component; the stationary vest is worn on the upper body of the user when the user wears the frame; the fixing part is arranged at the back waist position of the user through the fixing vest; the arm connecting plate is fixed on the forearm of the user through a binding band; the elastic auxiliary component is arranged on the upper arm of the user, and the connecting position of the elastic auxiliary component and the arm connecting plate corresponds to the elbow joint position of the user; when the upper limbs of the user are lifted, the elastic auxiliary assembly provides the assistance force in the same direction as the extending direction of the arms through the built-in spring structure. Partial gravity of the workpiece is acted from the large arm of the hand of the user to the hand supporting rod, the mounting shell and the compression spring, the cam, the stressed supporting rod and the fixing part to the waist of the user, so that the load borne by the arm of the user is reduced. An external power source is not needed, the device is simple and practical in structure, and reasonable supporting force can be provided; the device is in line with human engineering, has small volume and light weight, and is easy to carry; the boosting size can be changed through stepless adjustment, and additional change-over parts are not needed.

Drawings

In order to more clearly illustrate the technical solutions of the present application, the drawings needed to be used in the description of the present application will be briefly introduced below, and it is apparent 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 that other drawings can be obtained according to the drawings without inventive labor.

Fig. 1 is a schematic structural view of an upper limb power assisting device of the present invention;

fig. 2 is a schematic structural view of an arm auxiliary frame of an upper limb power assisting device of the present invention;

fig. 3 is a schematic structural view of a mounting housing of an upper limb power assisting device of the present invention;

fig. 4 is a schematic sectional view in the direction of a-a in fig. 3.

The hand support device comprises a fixing part 10, a fixing vest 11, a stress support rod 20, a cam spring mechanism 31, a hand support rod 32, a connecting rod 41, a connecting column 42, an adjusting locking screw 43, a connecting shaft 44, a bearing 50, an arm connecting plate 60, a first spring fixing piece 71, a second spring fixing piece 72, a cam 312, a compression spring 313, a pre-tightening adjusting screw 314, an adjusting knob 315, a cam follower 316, an upper mounting shell 3111, a lower mounting shell 3112 and a follower fixing shaft 3161.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1 to 4, the utility model provides an upper limb power assisting device. Comprises a fixed vest 11 and an arm auxiliary framework; the arm auxiliary framework comprises two pairs; the arm auxiliary framework comprises a fixing part 10 for fixing the arm auxiliary framework on the back of the fixing vest, a stress supporting rod 20, an elastic auxiliary component and an arm connecting plate 60;

one end of the stressed support rod 20 is movably connected with the fixing part 10; the other end of the stressed supporting rod 20 is movably connected with the arm connecting plate 60 through the elastic auxiliary component;

the fixing vest 11 is worn on the upper body of the user when the user wears the skeleton; the fixing part 10 is arranged at the back waist position of the user through the fixing vest 11; the arm connecting plate 60 is fixed to the forearm of the user by a strap; the elastic auxiliary component is arranged on the big arm of the user, and the connection position of the elastic auxiliary component and the arm connecting plate 60 corresponds to the elbow joint position of the user;

when the upper limbs of the user are lifted, the elastic auxiliary assembly provides the assistance force in the same direction as the extending direction of the arms through the built-in spring structure.

In the embodiment of the application, the device comprises a fixed vest 11 and an arm auxiliary framework; the arm auxiliary framework comprises two pairs; the arm auxiliary framework comprises a fixing part 10 for fixing the arm auxiliary framework on the back of the fixing vest 11, a stress supporting rod 20, an elastic auxiliary component and an arm connecting plate 60; one end of the stressed support rod 20 is movably connected with the fixing part 10; the other end of the stressed supporting rod 20 is movably connected with the arm connecting plate 60 through the elastic auxiliary component; the fixing vest 11 is worn on the upper body of the user when the user wears the skeleton; the fixing part 10 is arranged at the back waist position of the user through the fixing vest 11; the arm connecting plate 60 is fixed to the forearm of the user by a strap; the elastic auxiliary component is arranged on the big arm of the user, and the connection position of the elastic auxiliary component and the arm connecting plate 60 corresponds to the elbow joint position of the user; when the upper limbs of the user are lifted, the elastic auxiliary assembly provides the assistance force in the same direction as the extending direction of the arms through the built-in spring structure. Partial gravity of the workpiece is acted from the large arm of the hand of the user to the hand supporting rod, the mounting shell and the compression spring, the cam, the stressed supporting rod and the fixing part to the waist of the user, so that the load borne by the arm of the user is reduced. An external power source is not needed, the device is simple and practical in structure, and reasonable supporting force can be provided; the device is in line with human engineering, has small volume and light weight, and is easy to carry; the boosting size can be changed through stepless adjustment, and additional change-over parts are not needed.

Hereinafter, the upper limb assisting device in the present exemplary embodiment will be further described.

It should be noted that the arm auxiliary framework includes a fixing portion 10, a force-bearing support rod 20 and an elastic auxiliary component, wherein the elastic auxiliary component includes a cam spring mechanism 31 and a hand support rod 32, and the cam spring mechanism 31 includes a mounting shell, a cam 312 and a compression spring 313. Fixed part 10 is used for the fixed dress on user's waist, the first end of atress bracing piece 20 is connected on fixed part 10, cam 312 fixed connection is in the second end of atress bracing piece 20, and cam 312 rotates relatively with the installation shell and is located the installation cavity of installation shell (specifically, the installation shell comprises installation epitheca 3111 and installation inferior valve 3112, installation epitheca 3111 lid closes in order to form the installation cavity on installation inferior valve 3112), compression spring 313 is installed in the installation cavity of installation shell by pretension compressional, the first end of compression spring 313 butts on the wheel face of cam 312, the second end of compression spring 313 butts on the installation cavity wall of installation shell, the first end and the installation shell fixed connection of hand die-pin 32, the second end of hand die-pin 32 is used for binding on user's hand big arm.

The fixing waistcoat is characterized in that the supporting seat of the waistcoat is connected with the braces and the waistband, the whole device can be attached to a human body through the braces and the waistband in the using process, and meanwhile, the fixing waistcoat is convenient to wear and detach.

The user uses the arm auxiliary framework provided by the utility model to assist in lifting the workpiece, when using the arm auxiliary framework, the fixing part 10 needs to be stably fixed on the waist, then the second end of the hand supporting rod 32 is stably bound on the large hand arm, in the process of lifting the workpiece by the user, the arm of the user pulls the hand supporting rod 32, thereby driving the hand supporting rod 32, the mounting shell rotates by taking the cam 312 as a supporting shaft, at the moment, the cam 312 rotates relative to the mounting shell, the position of the second end butt of the compression spring 313 on the wheel surface of the cam 312 changes, so that the compression spring 313 is further compressed to generate larger elastic potential energy, when the user lifts the workpiece to the highest position (at the moment, the small hand arm and the large hand arm of the user are in a straight state), the elastic potential energy of the compression spring 313 is the largest, and the arm lifting of the user forms an auxiliary force, therefore, partial gravity of the workpiece is acted from the big arm of the hand of the user to the hand supporting rod 32, the mounting shell and the compression spring 313, the cam 312, the stressed supporting rod 20 and finally the fixing part 10 to the waist of the user, the bearing load of the arm of the user is reduced, and the problem of arm ache of the arm of the user caused by long-term workpiece lifting is greatly reduced.

As shown in fig. 2, the arm assist frame further includes an angle adjusting assembly, a first end of the angle adjusting assembly is connected to the second end of the force-bearing support rod 20 in an angle-adjustable manner, and a second end of the angle adjusting assembly is fixedly connected to the cam 312. The user can adjust the angle of the hand supporting rod 32 relative to the stressed supporting rod 20 before using the arm auxiliary framework according to the actual lifting working condition, so that the best using effect is achieved. Specifically, the angle adjusting assembly comprises a connecting rod 41, a connecting column 42, an adjusting locking screw 43 and a connecting shaft 44, the connecting column 42 is fixedly connected to the second end of the stress supporting rod 20, the first end of the connecting rod 41 is provided with two through holes, one of the through holes is rotatably sleeved on the connecting column 42, the adjusting locking screw 43 fixes the connecting rod 41 and the stress supporting rod 20 through the other through hole, the first end of the connecting shaft 44 is fixedly connected to the second end of the connecting rod 41, the second end of the connecting shaft 44 is fixedly connected to the cam 312, and the connecting shaft 44 and the mounting shell can rotate relatively. In the specific angle adjustment process, the user firstly loosens the adjusting locking screw 43, so that the connecting rod 41 can rotate relative to the second end of the stressed supporting rod 20 (by using the connecting column 42 as a rotating shaft), and after the connecting rod 41 rotates relative to the stressed supporting rod 20 to the optimal angle suitable for the actual working condition, the adjusting locking screw 43 is locked and fixed to the first end of the connecting rod 41 and the second end of the stressed supporting rod 20. In the process of assisting the arm lifting of the user by the arm auxiliary framework, partial gravity of the workpiece acts from the large arm of the hand of the user to the hand supporting rod 32, the mounting shell and the compression spring 313, the cam 312, the connecting rod 41, the stressed supporting rod 20 and finally the fixing part 10 to the waist of the user, so that the load borne by the arm of the user is reduced.

As shown in fig. 4, in order to make the relative rotation between the cam 312 and the mounting case smoother, the connecting shaft 44 is connected to the mounting case 3112 through two bearings 50, the cam 312 being located between the two bearings 50. The two bearings 50 can meet the use requirements by adopting angular contact bearings. Therefore, the process that the arms of the user draw the hand supporting rod 32 to rotate is smoother and more convenient, and the user can freely lift under the assistance of the arm auxiliary framework.

Preferably, the cam spring mechanism 31 further includes a pre-tightening adjusting screw 314 and an adjusting knob 315, the pre-tightening adjusting screw 314 is screwed to the mounting lower shell 3112, a second end of the compression spring 313 abuts against a first end of the pre-tightening adjusting screw 314, the adjusting knob 315 is fixedly connected to a second end of the pre-tightening adjusting screw 314 through a follower fixing shaft 3161 (in the process of assembling the adjusting knob 315 and the pre-tightening adjusting screw 314, the pre-tightening adjusting screw 314 passes through the adjusting knob 315, and then the follower fixing shaft 3161 is inserted in the radial direction of the adjusting knob 315, so that the adjusting knob 315 is fixedly connected with the pre-tightening adjusting screw 314), and the adjusting knob 315 and the pre-tightening adjusting screw 314 rotate synchronously. For different lifted workpieces, different elastic potential energies are needed for assistance, and at this time, a user can rotate the adjusting knob 315 to drive the pre-tightening adjusting screw 314 to rotate, so that the initial compression amount (i.e., the pre-tightening compression amount) of the compression spring 313 is adjusted in advance to adapt to different use conditions of the different lifted workpieces.

In the present invention, the cam spring mechanism 31 further includes a cam follower 316, the cam follower 316 is slidably located in the mounting cavity of the mounting shell, the first end of the compression spring 313 is fixedly connected to the cam follower 316 through the first spring fixing member 71, the cam follower 316 abuts against the wheel surface of the cam 312, further, the second end of the compression spring 313 is fixedly connected to the second spring fixing member 72, and the second spring fixing member 72 is fixedly connected to the first end of the pre-tightening adjusting screw 314.

In order to accommodate users of different heights, the stressed supporting rod 20 is a telescopic supporting rod which can be telescopically adjusted. When a higher user uses the arm auxiliary framework, the telescopic supporting rod is stretched according to the actual use length of the user; when a shorter user uses the arm auxiliary framework, the telescopic supporting rod is shortened according to the actual use length of the user.

The fixed part 10 includes waist rigging piece, connecting seat, universal joint bearing and bandage, and connecting seat fixed connection is in waist rigging piece, and universal joint bearing's outer lane is fixed in the connecting seat, the first end of flexible bracing piece and universal joint bearing's inner circle fixed connection, and the bandage is connected on waist rigging piece in order to be used for tying up user's waist. The universal joint bearing is used for realizing multi-degree-of-freedom motion between the telescopic supporting rod and the connecting seat, the freedom degree of the movable joint of a human body is met, and the user who needs to wear the telescopic supporting rod feels the least constraint.

Preferably, as shown in fig. 2, in order to make the user more comfortable during the use process, the arm auxiliary frame further includes an arm connecting plate 60, the arm connecting plate 60 is fixed on the second end of the hand rest 32, and the arm connecting plate 60 is used for binding the strap attached to the big arm of the hand of the user.

This arm auxiliary framework's whole weight is less, only about 1.6kg, the user can not experience the device's weight at dress in-process basically, use, the user can be according to operating condition, through the pre-compaction volume of adjusting compression spring 313, and adjust the operating mode angle between connecting rod 41 and the flexible bracing piece, thereby realize best helping hand effect, in addition, realize multi freedom motion through universal joint bearing between flexible bracing piece and the connecting seat, make the device only less suppression to the normal activity of human body, the user can realize controlling to the device well.

The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

While preferred embodiments of the present invention have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the invention.

Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.

Claims (10)

1. An upper limb power assisting device is characterized by comprising a fixed vest and an arm auxiliary framework; the arm auxiliary framework comprises two pairs; the arm auxiliary framework comprises a fixing part for fixing the arm auxiliary framework at the back position of the fixing vest, a stress supporting rod, an elastic auxiliary component and an arm connecting plate;

one end of the stressed supporting rod is movably connected with the fixing part; the other end of the stressed supporting rod is movably connected with the arm connecting plate through the elastic auxiliary component;

the stationary vest is worn on the upper body of the user when the user wears the frame; the fixing part is arranged at the back waist position of the user through the fixing vest; the arm connecting plate is fixed on the forearm of the user through a binding band; the elastic auxiliary component is arranged on the upper arm of the user, and the connecting position of the elastic auxiliary component and the arm connecting plate corresponds to the elbow joint position of the user;

when the upper limbs of the user are lifted, the elastic auxiliary assembly provides the assistance force in the same direction as the extending direction of the arms through the built-in spring structure.

2. The upper limb assisting device according to claim 1, wherein the elastic force assisting component comprises a cam spring mechanism and a hand supporting rod, the cam spring mechanism comprises a mounting shell, a cam and a compression spring, the cam is fixedly connected to the second end of the stressed supporting rod, the cam and the mounting shell rotate relatively and are located in the mounting cavity of the mounting shell, the compression spring is compressively mounted in the mounting cavity of the mounting shell under the pretension, the first end of the compression spring abuts against the wheel surface of the cam, the second end of the compression spring abuts against the wall of the mounting cavity of the mounting shell, the first end of the hand supporting rod is fixedly connected with the mounting shell, and the second end of the hand supporting rod is used for being bound on the hand big arm of the user.

3. The upper limb assist device according to claim 2, further comprising an angle adjusting component, wherein a first end of the angle adjusting component is connected to a second end of the stressed support bar in an angle-adjustable manner, and a second end of the angle adjusting component is fixedly connected with the cam.

4. The upper limb assisting device according to claim 3, wherein the angle adjusting assembly comprises a connecting rod, a connecting column, an adjusting locking screw and a connecting shaft, the connecting column is fixedly connected to the second end of the force-bearing supporting rod, the first end of the connecting rod is provided with two through holes, one of the through holes is rotatably sleeved on the connecting column, the adjusting locking screw fixes the connecting rod and the force-bearing supporting rod through the other through hole, the first end of the connecting shaft is fixedly connected to the second end of the connecting rod, the second end of the connecting shaft is fixedly connected to the cam, and the connecting shaft and the mounting shell can rotate relatively.

5. The upper limb assist device of claim 4 wherein the connecting shaft is connected to the mounting housing by two bearings, the cam being located between the two bearings.

6. The upper limb assisting device according to any one of claims 2 to 5, wherein the cam spring mechanism further comprises a pre-tightening adjusting screw and an adjusting knob, the pre-tightening adjusting screw is connected to the mounting shell in a threaded manner, the second end of the compression spring abuts against the first end of the pre-tightening adjusting screw, the adjusting knob is connected to the second end of the pre-tightening adjusting screw, and the adjusting knob and the pre-tightening adjusting screw rotate synchronously.

7. The upper limb assist device of claim 6 wherein the cam spring mechanism further comprises a cam follower slidably located within the mounting cavity of the mounting housing, the first end of the compression spring being fixedly connected to the cam follower, the cam follower abutting against the tread of the cam.

8. The upper limb assist device of claim 1 wherein the force-bearing support rod is a telescopically adjustable telescopic support rod.

9. The upper limb power assisting device according to claim 8, wherein the fixing portion comprises a waist attaching member, a connecting seat, a universal joint bearing and a binding band, the connecting seat is fixedly connected to the waist attaching member, an outer ring of the universal joint bearing is fixed to the connecting seat, the first end of the telescopic supporting rod is fixedly connected to an inner ring of the universal joint bearing, and the binding band is connected to the waist attaching member for tightly binding the waist of the user.

10. The upper limb assist device as recited in claim 2, further comprising an arm connecting plate fixed to the second end of the hand support bar, the arm connecting plate adapted to fit over the upper limb of the user's hand for tightening.

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