CN111467783A

CN111467783A - Accompanying rotating device for wrapping human elbow joint

Info

Publication number: CN111467783A
Application number: CN202010342739.6A
Authority: CN
Inventors: 黄沿江; 吴衍傧; 高婷钰; 罗新龙; 萧浩坤
Original assignee: South China University of Technology SCUT
Current assignee: South China University of Technology SCUT
Priority date: 2020-04-27
Filing date: 2020-04-27
Publication date: 2020-07-31

Abstract

The invention discloses an accompanying rotating device for wrapping a human elbow joint, wherein an elbow protecting mechanism comprises a small arm protector and a large arm protector which are mutually independent, and a small arm connecting rod and a large arm connecting rod which form a boosting mechanism are respectively arranged on the small arm protector and the large arm protector, so that the integral structure is simple; the small arm connecting rod comprises a supporting part and an elastic part connected with the supporting part, the supporting part and the elastic part are positioned on the same straight line, and when the arm bends and stretches, the elastic part stretches along with the arm, so that the axial movement between the elbow guard mechanism and the arm is counteracted, the connection stability between the elbow guard mechanism and the arm is improved, the relative movement between the small arm connecting rod and the large arm connecting rod is prevented from being blocked, and the smooth bending and stretching movement of the arm is ensured; moreover, the large arm connecting rod and the supporting part of the same power assisting mechanism are hinged and connected through the connecting shaft, the size of the transmission connecting part is reduced due to the single-shaft transmission mode, the weight of the whole device is reduced, and the light weight is realized.

Description

Accompanying rotating device for wrapping human elbow joint

Technical Field

The invention relates to the field of auxiliary power-assisted instruments, in particular to an accompanying rotating device wrapping elbow joints of a human body.

Background

Ordinary flexible elbow pad can provide pressure for the user, lets avoid the user to lead to the joint swelling because of exerting oneself excessively in the motion process, also can play certain limiting action to the motion of elbow joint simultaneously, avoids injured position to receive the wound once more. For the old and the patients with the decreased muscle performance of the elbow, the flexible elbow guard is generally matched with a power assisting mechanism for use together.

The power assisting mechanism provides torque force for elbow joint movement by placing the rotating shaft mechanisms on two sides of the elbow joint so as to realize power assisting. In order to ensure the normal movement of the power-assisted mechanism, the centers of the rotating shafts on the two sides of the rotating shaft mechanism and the rotating center of the elbow joint are required to be kept on the same straight line. However, the flexible elbow guard cannot keep the accurate positioning between the rotating shaft mechanism and the elbow joint, so that the rotating shaft mechanism is easy to axially move during the movement of the elbow joint, and then the rotating shaft mechanism is blocked, and the elbow joint movement of a user is hindered.

Disclosure of Invention

The present invention has been made to solve at least one of the problems occurring in the prior art, and an object of the present invention is to provide an accompanying rotation device for wrapping an elbow joint of a human body, which does not axially displace with the motion of the elbow joint and has a simple structure.

The accompanying rotating device for wrapping the human elbow joint comprises an elbow protecting mechanism and at least one pair of power-assisted mechanisms, wherein the elbow protecting mechanism comprises a small arm protector and a large arm protector which are independent of each other; each assistance mechanism comprises a small arm connecting rod and a large arm connecting rod which are arranged on the small arm protector and the large arm protector respectively; each small arm connecting rod comprises a supporting part and an elastic part connected with the supporting part, the supporting part and the elastic part are positioned on the same straight line, and the large arm connecting rod of the same pair of boosting mechanisms is hinged with the supporting part of the small arm connecting rod through a connecting shaft.

The accompanying rotating device for wrapping the human elbow joint provided by the embodiment of the invention has at least the following beneficial effects: according to the accompanying rotating device for wrapping the human elbow joint, the elbow protecting mechanism comprises the small arm protector and the large arm protector which are mutually independent, and the small arm connecting rod and the large arm connecting rod which form the power assisting mechanism are respectively arranged on the small arm protector and the large arm protector, so that the whole structure is simple; the small arm connecting rod comprises a supporting part and an elastic part connected with the supporting part, the supporting part and the elastic part are positioned on the same straight line, and when the arm bends and stretches, the elastic part stretches along with the arm, so that the axial movement between the elbow guard mechanism and the arm is counteracted, the connection stability between the elbow guard mechanism and the arm is improved, the relative movement between the small arm connecting rod and the large arm connecting rod is prevented from being blocked, and the smooth bending and stretching movement of the arm is ensured; moreover, the large arm connecting rod and the supporting part of the same power assisting mechanism are hinged and connected through the connecting shaft, the size of the transmission connecting part is reduced due to the single-shaft transmission mode, the weight of the whole device is reduced, and the light weight is realized.

According to some embodiments of the invention, the resilient portion is a resilient element having one end fixed to an end of the support portion, the other end of the resilient element being connected to the forearm guard.

According to some embodiments of the invention, the forearm protector is provided with a fixing groove shell for insertion and fixing of the end of the elastic element.

According to some embodiments of the invention, the resilient element is a helical spring.

According to some embodiments of the invention, the supporting portion is a straight rod, and a boss is formed at an end of the supporting portion connected to the elastic portion, and a cross section of the boss has a larger outline area than a cross section of the supporting portion.

According to some embodiments of the invention, the small arm protector and the large arm protector are both arc-shaped package shells, at least one pair of bandage clamping shafts are respectively arranged on two sides of each arc-shaped package, a bandage is connected between the same pair of bandage clamping shafts, and a buckle is respectively arranged on each bandage.

According to some embodiments of the invention, each of the straps is an elastic band.

According to some embodiments of the invention, the inner side surface of each of the arc wrapping shells is padded.

According to some embodiments of the invention, the middle part of each arc-shaped wrapping shell is provided with at least one through hole.

According to some embodiments of the invention, the elbow guard is made of ABS plastic, and the large arm link and the support are made of aluminum alloy.

Drawings

The invention will be further described with reference to the accompanying drawings in which:

FIG. 1 is a schematic view showing the overall structure of an accompanying rotating apparatus for wrapping a human elbow joint according to an embodiment of the present invention;

FIG. 2 is a schematic view of another angle of the accompanying rotating device for wrapping the human elbow joint according to the embodiment of the present invention;

fig. 3 is an assembly structure view of the forearm guard and the forearm link according to the embodiment of the invention.

Detailed Description

Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

Referring to fig. 1 to 3, the accompanying rotation device for wrapping the elbow joint of the human body of the embodiment of the invention comprises an elbow protecting mechanism and two pairs of power-assisted mechanisms 2.

Specifically, the elbow guard mechanism includes a small arm supporter 11 and a large arm supporter 12 which are independent of each other; each assist mechanism 2 includes a small arm link 21 and a large arm link 22 provided on the small arm supporter 11 and the large arm supporter 12, respectively; each forearm link 21 is provided with a support portion 211 and an elastic portion 212 connected to the support portion 211, wherein the support portion 211 and the elastic portion 212 are located on the same straight line; and the large arm link 22 of the same auxiliary boosting mechanism 2 is hinged with the supporting part 211 of the small arm link 21 through the connecting shaft 23.

According to the accompanying rotation device for wrapping the human elbow joint, the elbow guard mechanism comprises the small arm protector 11 and the large arm protector 12 which are independent from each other, the small arm connecting rod 21 and the large arm connecting rod 22 which form the power assisting mechanism 2 are respectively arranged on the small arm protector 11 and the large arm protector 12, and the whole structure is simple; the small arm connecting rod 21 comprises a supporting part 211 and an elastic part 212 connected with the supporting part 211, the supporting part 211 and the elastic part 212 are positioned on the same straight line, when the arm bends and stretches, the elastic part 212 stretches along with the arm, so that the axial movement between the elbow guard mechanism and the arm is counteracted, the connection stability between the elbow guard mechanism and the arm is improved, the relative motion between the small arm connecting rod 21 and the large arm connecting rod 22 is prevented from being blocked, and the smooth bending and stretching motion of the arm is ensured; furthermore, the large arm connecting rod 22 and the supporting part 211 of the same power assisting mechanism 2 are hinged and connected through the connecting shaft 23, and the size of the transmission connecting part is reduced due to the single-shaft transmission mode, the weight of the whole device is reduced, and the light weight is realized.

In some embodiments of the present invention, the elastic portion 212 is an elastic element having one end fixed to the end of the supporting portion 211, and the other end of the elastic element is connected to the small arm supporter 11, so that when the arm of the user performs a bending and stretching exercise and drives the small arm supporter 11 and the large arm supporter 12 to rotate around the connecting shaft 23, the elastic element can contract or stretch and deform accordingly, thereby counteracting the axial movement between the small arm supporter 11 and the large arm supporter 12 and the contact portion of the arm skin, and keeping the rotation center of the elbow joint and the axis of the connecting shaft 23 on the same straight line all the time, thereby ensuring that the assisting mechanism 2 does not get stuck during the exercise process, and improving the smoothness of the arm bending and stretching exercise.

More specifically, in order to facilitate the connection and fixation of the elastic element to the lower arm supporter 11 and to avoid the interference of the stretching movement of the elastic element by the external environment, and to ensure the normal stretching movement, in the embodiment of the present invention, a fixing groove 111 is provided on the lower arm supporter 11 for the insertion and fixation of the end portion of the elastic element.

Referring to fig. 1 and 2, the lower arm supporter 11 and the upper arm supporter 12 are both arc-shaped wrapping shells, the cross section of each arc-shaped wrapping shell is U-shaped, two fixing groove shells 111 are respectively disposed on two sides of the lower arm supporter 11, and each fixing groove shell 111 is in a long strip shape and is parallel to the side of the lower arm supporter 11. Further, the groove depth of each fixed groove shell 111 is greater than the length of the elastic element, the end of the elastic element is connected to the groove bottom of the fixed groove shell 111, and the end of the supporting portion 211 is also inserted into the fixed groove shell 111 to be connected with the elastic element; meanwhile, in order to ensure that the supporting portion 211 can smoothly slide within the fixing casing 111 without being restricted, the cross-sectional area of the slot hole of the fixing casing 111 is greater than that of the supporting portion 211. Specifically, in the present embodiment, as shown in fig. 3, the elastic element is a coil spring, and two free ends of the coil spring are respectively connected with the fixing groove shell 111 and the supporting portion 211 by welding or other fixing methods; preferably, in order to further reduce the overall size of the accompanying rotating device and increase the overall rigidity, two or more coil springs having a high elastic modulus may be used, so that the length of the coil spring to be used may be shortened to achieve the effect of reducing the overall size.

More specifically, the supporting portion 211 of the present embodiment has a straight rod shape, and a boss 2111 is formed at an end portion of the supporting portion 211 connected to the coil spring (i.e., the elastic portion 212); the cross-sectional profile area of the boss 2111 is larger than the cross-sectional area of the support portion 211 and smaller than the cross-sectional area of the slot of the stationary tub 111. So, when coil spring and the connection fracture of supporting part 211, perhaps after taking place to warp at flexible in-process many times, can carry on spacingly to coil spring's home range to ensure the normal use of whole device better.

Further, in order to improve the location steadiness between elbow guard mechanism and the arm, two pairs of bandage card axles 13 are symmetrically arranged at the two sides of the small arm protector 11 and the large arm protector 12 respectively, a bandage 14 is connected between the same pair of bandage card axles 13, and a buckle is installed on each bandage 14 respectively, so that the user can adjust the length of the bandage 14 according to the size of the arm of the user, and the purpose of fixing is achieved by using the buckle. The setting of buckle has greatly improved this commonality that accompanies rotating device. In order to improve the wearing comfort of the user and reduce the oppressive feeling of the straps 14 to the arms of the user, each strap 14 of the present embodiment is an elastic band.

In some embodiments, each of the large arm link 22 and the fixed slot case 111 is fixed to the arc wrap cases of the large arm supporter 12 and the small arm supporter 11 by a fastener. Specifically, each arc wrapping shell is provided with a fixing hole, and the large arm link 22 and the fixing groove shell 111 are connected to the arc wrapping shells of the large arm supporter 12 and the small arm supporter 11 by screws fitted to the fixing holes, respectively. Further, soft pads 15 are laid on the inner side surfaces of the arc wrapping shells forming the small arm protector 11 and the large arm protector 12, and the soft pads 15 are made of sponge. The laying of the soft cushion 15 not only improves the attaching capability between each arc wrapping shell and the big arm and the small arm, but also improves the overall aesthetic degree of the device. Moreover, the soft pad 15 still will cover the screw that exposes in the fixed orifices of arc parcel shell, prevent effectively that the screw from taking place the oxidation because of too much contact with external environment, having reduced the risk that drops of part, having improved overall assembly structure's stability and reliability.

The middle part of each arc-shaped wrapping shell is respectively provided with a through hole 16; the edges of each through hole 16 are chamfered to form an arc surface. So not only let forearm protective equipment 11, big arm protective equipment 12 adapt to the change of arm muscle lines better at the articulated rotatory in-process of crooking and stretching of elbow, also be favorable to alleviateing the weight of forearm protective equipment 11 and big arm protective equipment 12, realize the lightweight of integrated device, comfort level when improving the user and using. In other embodiments, the number of through holes 16 may be two or more, and the size of the through holes 16 may be determined according to actual conditions.

In some embodiments of the invention, the elbow guard mechanism is made of ABS plastic, the ABS plastic is light in weight, non-toxic and odorless, and a product made of the ABS plastic has the characteristics of lightness and safety, so that the burden on the arms and the elbows of a human body can be relieved while the structural stability of the elbow guard mechanism is ensured. Moreover, ABS plastic has excellent mechanical property, and the notch impact strength of the ABS plastic is as high as 20KJ/m²The material has good impact resistance, excellent wear resistance and good dimensional stability, and can still maintain higher mechanical property after being used for a long time; under the same mass condition, the specific strength of the ABS plastic is higher than that of 45 steel, and is 3-5 times of that of common plastic. Meanwhile, the fabric has poor hygroscopicity and high thermal deformation temperature, can stably exist in a high-humidity environment of the body surface, and can keep stable form at the body surface temperature and the environment temperature which are common in daily life. The ABS plastic is used as a terpolymer of acrylonitrile, butadiene and styrene, organically integrates various performances of the acrylonitrile, the butadiene and the styrene, has excellent mechanical properties of toughness, hardness and rigidity balance, has excellent comprehensive physical properties, can be used in a use environment with large impact force and large stress in a protective tool, and stably maintains the mechanical properties in a common environment.

Meanwhile, in order to improve the corrosion resistance of the accompanying rotating device, the large arm link 22 and the support portion 211 are made of aluminum alloy. Further, the material of the large arm link 22 and the support portion 211 in this embodiment is 6061 aluminum alloy; 6061 aluminum alloy contains more magnesium and silicon, has excellent processing property and toughness, has a tensile strength of 205MPa which is close to that of 45 steel, and has a density of only 2.75g/cm³Is 45 steel IIIOne of the advantages is high specific strength, and is suitable for daily use.

The invention is not limited to the above embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the invention, and such equivalent modifications or substitutions are included in the scope of the claims of the present application.

Claims

1. An accompanying rotation device for wrapping a human elbow joint, comprising:

the elbow guard mechanism comprises a small arm guard and a large arm guard which are mutually independent;

the auxiliary device comprises at least one pair of power-assisted mechanisms, wherein each power-assisted mechanism comprises a small arm connecting rod and a large arm connecting rod which are arranged on a small arm protector and a large arm protector respectively;

each small arm connecting rod comprises a supporting part and an elastic part connected with the supporting part, the supporting part and the elastic part are positioned on the same straight line, and the large arm connecting rod of the same pair of boosting mechanisms is hinged with the supporting part of the small arm connecting rod through a connecting shaft.

2. The concomitant rotation device of claim 1 for wrapping a human elbow joint, wherein: the elastic part is an elastic element with one end fixed with the end part of the supporting part, and the other end of the elastic element is connected to the forearm protector.

3. The concomitant rotation device of claim 2 for wrapping an elbow joint of a human body, wherein: the small arm protector is provided with a fixing groove shell for inserting and fixing the end part of the elastic element.

4. The concomitant rotation device of claim 3 for wrapping a human elbow joint, wherein: the elastic element is a coil spring.

5. The concomitant rotation device of claim 2 for wrapping an elbow joint of a human body, wherein: the supporting part is in a straight rod shape, a boss is formed at the end part of the supporting part connected with the elastic part, and the outline area of the cross section of the boss is larger than that of the supporting part.

6. The concomitant rotation device of claim 1 for wrapping a human elbow joint, wherein: the forearm protective equipment, big arm protective equipment are arc parcel shell, each the both sides of arc parcel set up at least a pair of bandage card axle respectively, and it is same a pair of be connected with the bandage between the bandage card axle, each install the buckle on the bandage respectively.

7. The concomitant rotation device of claim 6 for wrapping a human elbow joint, wherein: each bandage is an elastic belt.

8. The concomitant rotation device of claim 6 for wrapping a human elbow joint, wherein: soft pads are respectively paved on the inner side surfaces of the arc wrapping shells.

9. The concomitant rotation device of claim 8 for wrapping an elbow joint of a human being, wherein: the middle part of each arc wrapping shell is provided with at least one through hole.

10. The concomitant rotation device of claim 1 to 9 for wrapping a human elbow joint, wherein: the elbow guard mechanism is made of ABS plastic, and the large arm connecting rod and the supporting part are made of aluminum alloy.