CN219049314U - Knee joint training device - Google Patents

Abstract

The utility model discloses a knee joint trainer, which comprises a support frame, a seat assembly, a driving piece and a fixing assembly, wherein the seat assembly is arranged on the support frame; the driving piece is arranged at the bottom of the supporting frame; the fixed subassembly is used for fixing human shank, and fixed subassembly includes bracket and lower carriage, and the one end rotation of bracket is connected in the below of sitting and leaning on the subassembly, and the one end that the seat leaned on the subassembly was kept away from to the bracket is equipped with rotation regulation structure, and lower carriage rotates with last bracket through rotation regulation structure to be connected, and the driving piece is connected in the bracket to drive bracket and lower bracket and lean on the subassembly back-and-forth swing relatively. The knee joint trainer of the technical scheme of the utility model can adaptively adjust the training angle according to the injury and training requirements of patients, thereby meeting the use requirements of different patients.

Description

Knee joint training device

Technical Field

The utility model relates to the technical field of medical equipment, in particular to a knee joint trainer.

Background

Knee joint trainers are commonly used to assist in push-pull, flexion and extension exercises of the knee joint of some leg injured patients to help the patient quickly recover during rehabilitation therapy. In some knee joint training machines at present, the fixed subassembly for fixing patient's shank generally utilizes electric putter push-and-pull to drive and swings, however, the fixed subassembly of fixed shank in this kind of training machine can't angle modulation, can't adjust training angle according to different patient's wounded vigor and training requirement like this, can't satisfy patient's user demand.

Disclosure of Invention

The utility model aims to provide a knee joint trainer, which aims to adaptively adjust the training angle according to the injury and training requirements of patients and meet the use requirements of different patients.

To achieve the above object, the present utility model provides a knee joint trainer comprising:

a support frame;

the seat assembly is arranged on the support frame;

the driving piece is arranged at the bottom of the supporting frame; and

the fixing assembly is used for fixing legs of a human body and comprises an upper bracket and a lower bracket, one end of the upper bracket is rotationally connected to the lower side of the seat assembly, one end of the upper bracket, which is far away from the seat assembly, is provided with a rotation adjusting structure, the lower bracket is rotationally connected with the upper bracket through the rotation adjusting structure, and the driving piece is connected with the upper bracket so as to drive the upper bracket and the lower bracket to swing back and forth relative to the seat assembly.

Optionally, go up the bracket and include first die-pin, second die-pin and horizontal pole, first die-pin with the second die-pin sets up relatively, first die-pin with the one end of second die-pin rotate connect in sit the below of leaning on the subassembly, first die-pin with the other end of second die-pin all is equipped with rotate adjusting structure, the one end of horizontal pole is connected first die-pin, the other end is connected the second die-pin, the driving piece connect in the horizontal pole.

Optionally, the lower bracket includes the third die-pin and the fourth die-pin of relative setting, the one end of third die-pin through one rotate adjusting structure with first die-pin rotates to be connected, the one end of fourth die-pin through another rotate adjusting structure with the second die-pin rotates to be connected.

Optionally, the fixing component further comprises a limb support for fixing the lower leg of the human body, the third support rod and the fourth support rod are provided with sliding grooves, and the limb support body is installed between the third support rod and the fourth support rod and can slide along the sliding grooves.

Optionally, the seat back subassembly includes seat, back board and back support, back support connect in the support frame, the seat is installed on the support frame, the back board with back support connects, the back board with the seat is the contained angle setting.

Optionally, the back support includes first bracing piece, second bracing piece and back branch, the interval is provided with a plurality of first tooth mouths on the support frame, first bracing piece with the one end of second bracing piece with the support frame rotates to be connected, the back board support in first bracing piece with the second bracing piece, the one end of back branch is connected first bracing piece with the second bracing piece, the other end can be selectively with one first tooth mouthful joint is in order to adjust the back board with contained angle size between the seat.

Optionally, the first bracing piece with the one end that the second bracing piece kept away from the support frame all with the back board rotates to be connected, the back support still includes regulation branch, the interval is provided with a plurality of second tooth mouths on the back branch, the one end rotation of regulation branch connect in the back board is towards first bracing piece with one side of second bracing piece, the other end of regulation branch can be selectively with one second tooth mouthful joint, in order to adjust the back board with first bracing piece reaches contained angle size between the second bracing piece.

Optionally, a binding belt is arranged on the seat, a mounting hole is formed in the middle of the seat, a fixing buckle is arranged in the mounting hole, one end of the binding belt is fixed to the fixing buckle, and the other end of the binding belt is fixed to the side edge of the seat.

Optionally, the support frame includes fore-stock, back support and with the fore-stock the back support rotates the main part frame of being connected, the seat is fixed on the main part frame, back support rotate connect in the main part frame, fore-stock, back support with the back board is relative the main part frame rotates, and can fold in the bottom of seat.

Optionally, the knee joint training device further comprises a handrail, an insertion tube is arranged below the handrail, a slot is formed in the main body frame, and the insertion tube is inserted into the slot, so that the handrail is fixed with the main body frame.

According to the knee joint trainer, when a patient performs rehabilitation training of leg flexion and extension, the patient can sit on the seat assembly and fix the leg to be trained on the fixing assembly. And then starting the driving piece, wherein the driving piece drives the upper bracket below the seat assembly to swing back and forth relative to the seat assembly, and further drives the lower bracket to swing back and forth relative to the seat assembly by the upper bracket, so that when the lower leg of a patient is fixed on the lower bracket, the lower leg finishes the bending and stretching action in the back and forth swing process, thereby forming the training of knee joints. In addition, in this application scheme, further through setting up rotation regulation structure in the one end of last bracket, the lower bracket rotates through rotation regulation structure and last bracket to be connected for fixed subassembly angle of fixed shank is adjustable like this, and the driving piece drives and carries out wobbling range can realize wider scope, thereby can be according to patient's wound and the angle of training requirement adaptability adjustment training when training, satisfies different patient's user demand.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a knee trainer according to an embodiment of the utility model;

FIG. 2 is another view from the perspective of FIG. 1;

FIG. 3 is a schematic diagram of the explosive structure of FIG. 1;

FIG. 4 is an exploded view of a portion of the knee trainer of the present utility model;

FIG. 5 is a schematic view of the knee joint trainer of the present utility model in an open position;

FIG. 6 is a schematic view of the knee trainer of the present utility model in another open position;

FIG. 7 is a schematic view of the knee trainer of the present utility model in a folded state;

FIG. 8 is a schematic view of the knee trainer of the present utility model in a condition of use;

fig. 9 is a schematic view showing the structure of the knee joint trainer in a state of use.

Reference numerals illustrate:

reference numerals	Name of the name	Reference numerals	Name of the name
				10	Supporting frame	11	Main body frame
111	Slot groove	12	Front support
				13	Rear bracket	131	First tooth mouth
20	Seat back assembly	21	Seat board
				211	Mounting hole	212	Fixing buckle
22	Backboard for back board	23	Backrest support
				231	First support rod	232	Second support rod
233	Backrest strut	2331	Second tooth mouth
				234	Adjusting strut	30	Driving piece
40	Fixing assembly	41	Upper bracket
				411	First supporting rod	412	Second supporting rod
413	Cross bar	42	Lower bracket
				42a	Angle display disk	420	Sliding chute
421	Third supporting rod	422	Fourth supporting rod
				43	Limb support	50	Rotation adjusting structure
51	Angle adjusting disc	52	Locking spanner
				60	Bandage	70	Armrest (Armrest)
71	Cushion for soft mattress	72	Cannula tube
				100	Knee joint training device

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

In the present utility model, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout the text is to include three side-by-side schemes, taking "a and/or B as examples", including a scheme, or B scheme, or a scheme that both a and B satisfy. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

The present utility model proposes a knee joint trainer 100.

Referring to fig. 1 to 3 in combination, in an embodiment of the present utility model, the knee joint trainer 100 includes a support frame 10, a seat assembly 20, a driving member 30 and a fixing assembly 40, wherein the seat assembly 20 is mounted on the support frame 10; the driving piece 30 is arranged at the bottom of the support frame 10; the fixing assembly 40 is used for fixing legs of a human body, the fixing assembly 40 comprises an upper bracket 41 and a lower bracket 42, one end of the upper bracket 41 is rotatably connected to the lower side of the seat assembly 20, one end of the upper bracket 41, which is far away from the seat assembly 20, is provided with a rotation adjusting structure 50, the lower bracket 42 is rotatably connected with the upper bracket 41 through the rotation adjusting structure 50, and the driving piece 30 is connected to the upper bracket 41 so as to drive the upper bracket 41 and the lower bracket 42 to swing back and forth relative to the seat assembly 20.

In this application, the support frame 10 may be formed as a arch structure and supported on the ground. The seat assembly 20 can be fixed on the support frame 10 in a detachable connection mode and is fixed with the support frame 10 to form a chair shape, so that a patient can keep a seat to train when training is used, and the comfort is good.

The driving member 30 is mainly used as a power source for swinging the fixing assembly 40, and the driving member 30 may be a telescopic cylinder or an electric push rod, etc., in this embodiment, the electric push rod is preferred to ensure the stability of the electric telescopic linear motion. The driving piece 30 is connected with a power cord, one end of which, which is far away from the driving piece 30, is provided with a plug, and the driving piece 30 is also electrically connected with a controller. Therefore, after the plug is connected with the power supply, the patient can hold the controller to control the telescopic movement of the driving piece 30, so as to drive the leg to bend and stretch, and realize the rehabilitation training of the knee joint.

It will be appreciated that the securing assembly 40 should be positioned below the seat assembly 20 such that the patient's thighs can be supported on the seat assembly 20 during use and the lower legs can be secured using the lower brackets 42 of the securing assembly 40. The driving member 30 may oscillate the upper bracket 41 and the lower bracket 42 by a linear telescopic motion. In this application, rotate adjusting structure 50 includes angle adjusting disk 51 and is used for locking the locking spanner 52 of fixed angle adjusting disk 51, and lower bracket 42 passes the screw through the central round hole of angle adjusting disk 51 and connects to utilize locking spanner 52 to fix, when unclamping locking spanner 52, angle adjusting disk 51 rotates and can adjust the angle between upper bracket 41 and the lower bracket 42, can keep steadily training when locking spanner 52. Of course, in other embodiments, the rotation adjustment structure 50 may be a structure that is more commonly used in the art, such as a tooth rotation engagement and fixation structure. In addition, an angle display disc 42a is mounted to the lower bracket 42 in this application, and the angle display disc 42a can display the angle at which the upper bracket 41 and the lower bracket 42 are opened to each other. Therefore, the angle adjustment between the upper bracket 41 and the lower bracket 42 can adapt to the injury and training angle of a patient, and meanwhile, the maximization of the angle of converting the linear motion of the driving piece 30 into the arc motion of the fixed component 40 is realized, so that the training effect is effectively improved.

The knee trainer 100 according to the present utility model allows a patient to sit on the seat assembly 20 and fix the leg to be trained on the fixing assembly 40 during rehabilitation training of leg flexion and extension. Then, the driving member 30 is started, the driving member 30 drives the upper bracket 41 below the seat assembly 20 to swing back and forth relative to the seat assembly 20, and then the upper bracket 41 drives the lower bracket 42 to swing back and forth relative to the seat assembly 20, so that when the lower leg of the patient is fixed on the lower bracket 42, the lower leg finishes the flexion and extension actions in the back and forth swinging process as shown in fig. 8 and 9, and the knee joint training is formed. In addition, in this application scheme, further through setting up rotation regulation structure 50 in the one end of last bracket 41, lower bracket 42 is connected through rotation regulation structure 50 and last bracket 41 rotation for fixed subassembly 40 angle of fixed shank is adjustable like this, and driving piece 30 drives and carries out wobbling range and can realize wider scope, thereby can be according to patient's wound and the angle of training requirement adaptation regulation training when training, satisfies different patient's user demand.

Referring to fig. 3, further, in this application, the upper bracket 41 includes a first supporting rod 411, a second supporting rod 412 and a cross rod 413, the first supporting rod 411 and the second supporting rod 412 are oppositely disposed, one ends of the first supporting rod 411 and the second supporting rod 412 are rotatably connected under the seat assembly 20, the other ends of the first supporting rod 411 and the second supporting rod 412 are respectively provided with a rotation adjusting structure 50, one end of the cross rod 413 is connected with the first supporting rod 411, the other end is connected with the second supporting rod 412, and the driving member 30 is connected with the cross rod 413. Wherein, the first supporting rod 411 and the second supporting rod 412 can be hinged at the bottom of the seat assembly 20 through a hinge shaft so as to rotate relatively, the cross rod 413 can be integrated with the first supporting rod 411 and the second supporting rod 412, a connecting arm extends from the cross rod 413, and one end of the driving member 30 is detachably connected to the connecting arm. The first and second support rods 411 and 412 are rotatably coupled to the lower bracket 42 to achieve angular adjustment, so that the training angle can be adaptively adjusted according to the patient's injury and training requirements.

With continued reference to fig. 3, further, the lower bracket 42 includes a third supporting rod 421 and a fourth supporting rod 422 disposed opposite to each other, one end of the third supporting rod 421 is rotatably connected to the first supporting rod 411 through a rotation adjusting structure 50, and one end of the fourth supporting rod 422 is rotatably connected to the second supporting rod 412 through another rotation adjusting structure 50. Specifically, a space for fixing the calf of the human body is formed between the third supporting rod 421 and the fourth supporting rod 422, and the adjustment of the training angle is realized by the relative rotation of the rods, so that the device has a simple structure and better reliability of rotation and adjustment fixation.

In order to fix the leg of the patient during the training process, in an embodiment of the present application, the fixing component 40 further includes a limb support 43 for fixing the lower leg of the human body, the third support bar 421 and the fourth support bar 422 are provided with a sliding slot 420, and the limb support is installed between the third support bar 421 and the fourth support bar 422 and can slide along the sliding slot 420. Specifically, the limb support 43 can be made of more comfortable flexible materials, the limb support 43 comprises a back plate which is arranged in a bending mode and buckle belts which are connected with two sides of the back plate, the bending amplitude of the back plate can be adapted to the radian of the ankle of a human body, and the limb support 43 can be fixed at the position above the heel of the human body to fix the lower leg of a patient during use.

The two sides of the limb support 43 extend to form sliding parts, the sliding parts extend into the sliding grooves 420, when the sliding parts slide in the sliding grooves 420 to adjust the position of the limb support 43 on the lower bracket 42, and after adjustment, the sliding parts, the third support rod 421 and the fourth support rod 422 are locked and fixed for training, so that the positions of the fixed lower legs can be adaptively adjusted according to the requirements of different patients.

In an embodiment of the present application, the seat assembly 20 includes a seat 21, a back rest 22 and a back rest support 23, the back rest support 23 is connected to the support frame 10, the seat 21 is mounted on the support frame 10, the back rest 22 is connected to the back rest support 23, and the back rest 22 is disposed at an included angle with the seat 21. Wherein, seat 21 and back board 22 can be installed through detachable connection's mode, and the contained angle that forms between seat 21 and the back board 22 can be obtuse angle or right angle to can form into the seat form after making seat 21, back board 22, back support 23 and support frame 10 installation, thereby improve the travelling comfort of training use.

Further, the backrest support 23 comprises a first support bar 231, a second support bar 232 and a backrest support bar 233, a plurality of first tooth openings 131 are arranged on the support frame 10 at intervals, one ends of the first support bar 231 and the second support bar 232 are rotatably connected with the support frame 10, the backrest plate 22 is supported on the first support bar 231 and the second support bar 232, one end of the backrest support bar 233 is connected with the first support bar 231 and the second support bar 232, and the other end of the backrest support bar 233 can be selectively clamped with the first tooth opening 131 to adjust the included angle between the backrest plate 22 and the seat plate 21.

The first support bar 231 and the second support bar 232 may form a stable support for the backboard 22, and the first support bar 231 and the second support bar 232 may also be hinged to the support frame 10 by a hinge shaft to rotate. The backrest support rod 233 may be connected between the first support rod 231 and the second support rod 232, and in practical application, when the angle between the backrest plate 22 and the seat 21 needs to be adjusted, the first support rod 231 and the second support rod 232 may be rotated, so that one end of the backrest support rod 233 is clamped into the first tooth opening 131, and the backrest support 23 and the backrest can be kept stable in this state. The design of this structure, convenient operation and reliable and stable in the adjustment process.

In an embodiment of the present application, the first support rod 231 and the second support rod 232 are far away from one end of the support frame 10 and are rotationally connected with the backboard 22, the backrest support 23 further comprises an adjusting support rod 234, a plurality of second tooth openings 2331 are arranged on the backrest support rod 233 at intervals, one end of the adjusting support rod 234 is rotationally connected to one side of the backboard 22 facing the first support rod 231 and the second support rod 232, and the other end of the adjusting support rod 234 is selectively clamped with a second tooth opening 2331 to adjust the included angle between the backboard 22 and the first support rod 231 and the second support rod 232.

In this embodiment, by providing the adjusting strut 234 and the second tooth opening 2331 provided on the backrest strut 233, the backrest plate 22 can also rotate relative to the backrest frame 23, and be stabilized by the adjusting strut 234 being engaged with the second tooth opening 2331 after rotation. Therefore, in the use process, the back board 22 can rotate relative to the back support 23, so that the relative position of the bottom edge of the back board 22 on the seat board 21 is changed, as shown in fig. 5 and 6, the adjustment of the sitting area is realized, and the use requirements of different patients are met.

Further, referring to fig. 4, in an embodiment of the present application, a strap 60 is provided on the seat 21, a mounting hole 211 is provided in the middle of the seat 21, a fixing buckle 212 is installed in the mounting hole 211, one end of the strap 60 is fixed to the fixing buckle 212, and the other end is fixed to a side edge of the seat 21. In practical application, the thighs of the two legs of the patient are supported on the seat 21, the mounting holes 211 are formed in the middle of the seat 21, and the binding belt 60 is fixed by the fixing buckle 212, so that one leg to be trained can be conveniently fixed during training, shaking displacement is avoided on the thigh seat 21, and the training effect is ensured.

Referring to fig. 7 in combination, in the embodiment of the present application, the support frame 10 includes a front frame 12, a rear frame 13, and a main frame 11 rotatably connected to the front frame 12 and the rear frame 13, the seat 21 is fixed to the main frame 11, the backrest frame 23 is rotatably connected to the main frame 11, and the front frame 12, the rear frame 13, the backrest frame 23, and the backrest plate 22 are rotatably connected to the main frame 11 and are foldable at the bottom of the seat 21.

Specifically, the main body frame 11 is shaped like an airplane, and comprises a main beam, two sides of which are extended with wing arms and square tubes, wherein the wing arms are used for mounting the seat plate 21 by screws. The front bracket 12 and the rear bracket 13 are arranged in an inverted T-shaped structure, and one end of the front bracket is supported on the ground, so that the support stability of the front bracket 12 and the rear bracket 13 is good. The front bracket 12 and the rear bracket 13 may be in a nested structure so that the height of the support can be adjusted. One end of the front bracket 12 far away from the ground can be rotationally connected with the main body frame 11 through a hinge shaft, one end of the rear bracket 13 far away from the ground can be rotationally connected with the main body frame 11 through a hinge shaft, and the rear bracket 13 is provided with the first tooth opening 131. In a normal state, the main body frame 11 may be maintained in a substantially parallel state with the ground, the front support 12 may form a 90 ° support with the ground, and the rear support 1312 may form a 45 ° inclined support. It will be appreciated that the rotational connection structure of the front bracket 12, the rear bracket 13 and the main body frame 11 should be a rotational structure with an angle limitation, and when folding is required, the front bracket 12 and the rear bracket 13 are respectively folded under the main body frame 11, and meanwhile, the backboard 22 and the backrest bracket 23 can also be rotated to be folded under the seat 21, so as to complete the overall folding and storage of the knee trainer 100 for transportation and carrying.

Further, the knee joint training apparatus 100 further includes a handrail 70, a cannula 72 is disposed below the handrail 70, a slot 111 is disposed on the main body frame 11, and the cannula 72 is inserted into the slot 111, so that the handrail 70 is fixed with the main body frame 11. Specifically, the insertion groove 111 may be provided on the square tube of the main body frame 11, and the surface of the armrest 70 is provided with the soft pad 71 to increase the comfort of use. During assembly, the cannula 72 can be inserted into the slot 111 and then fixed, so as to ensure the stability of the installation of the armrest 70. It can be appreciated that by the arrangement of the armrest 70, the hand of the patient can be supported by the armrest 70 during the training and use process, so that the posture is easy to keep stable, and the training effect is further improved.

The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims (10)

1. A knee joint trainer, comprising:

a support frame;

the seat assembly is arranged on the support frame;

the driving piece is arranged at the bottom of the supporting frame; and

the fixing assembly is used for fixing legs of a human body and comprises an upper bracket and a lower bracket, one end of the upper bracket is rotationally connected to the lower side of the seat assembly, one end of the upper bracket, which is far away from the seat assembly, is provided with a rotation adjusting structure, the lower bracket is rotationally connected with the upper bracket through the rotation adjusting structure, and the driving piece is connected with the upper bracket so as to drive the upper bracket and the lower bracket to swing back and forth relative to the seat assembly.

2. The knee joint trainer of claim 1, wherein said upper bracket comprises a first support rod, a second support rod and a cross rod, said first support rod and said second support rod are disposed opposite to each other, one ends of said first support rod and said second support rod are rotatably connected to the underside of said seat assembly, the other ends of said first support rod and said second support rod are provided with said rotation adjustment structure, one end of said cross rod is connected to said first support rod, the other end is connected to said second support rod, and said driving member is connected to said cross rod.

3. The knee joint trainer of claim 2, wherein said lower bracket includes third and fourth opposed support rods, one end of said third support rod being rotatably connected to said first support rod by one of said rotation adjustment structures, and one end of said fourth support rod being rotatably connected to said second support rod by another of said rotation adjustment structures.

4. The knee brace of claim 3, wherein the securing assembly further comprises a limb brace for securing a calf of a person, the third brace and the fourth brace defining a chute, the limb brace being mounted between the third brace and the fourth brace and being slidable along the chute.

5. The knee brace of any one of claims 1 to 4, wherein the seat assembly comprises a seat, a back rest and a back rest support, the back rest support being coupled to the support frame, the seat being mounted to the support frame, the back rest being coupled to the back rest support, the back rest being disposed at an angle to the seat.

6. The knee joint training apparatus of claim 5 wherein the back support comprises a first support bar, a second support bar and a back support bar, wherein a plurality of first tooth openings are arranged on the support frame at intervals, one ends of the first support bar and the second support bar are rotatably connected with the support frame, the back support plate is supported by the first support bar and the second support bar, one end of the back support bar is connected with the first support bar and the second support bar, and the other end of the back support bar is selectively clamped with one of the first tooth openings so as to adjust the size of an included angle between the back support plate and the seat plate.

7. The knee joint training apparatus of claim 6 wherein the first support bar and the second support bar are rotatably connected to the back rest at ends remote from the support frame, the back rest further comprises an adjustment support bar, a plurality of second teeth are provided on the back rest support bar at intervals, one end of the adjustment support bar is rotatably connected to a side of the back rest plate facing the first support bar and the second support bar, and the other end of the adjustment support bar is selectively engaged with one of the second teeth to adjust the angle between the back rest plate and the first support bar and the second support bar.

8. The knee joint training apparatus of claim 5, wherein the seat is provided with a strap, a mounting hole is formed in the middle of the seat, a fixing buckle is installed in the mounting hole, one end of the strap is fixed to the fixing buckle, and the other end is fixed to the side edge of the seat.

9. The knee brace of claim 5, wherein the support bracket comprises a front bracket, a rear bracket, and a main body frame rotatably coupled to the front bracket and the rear bracket, the seat is fixed to the main body frame, the back bracket is rotatably coupled to the main body frame, and the front bracket, the rear bracket, the back bracket, and the back plate are rotatably coupled to the main body frame and are foldable at a bottom of the seat.

10. The knee brace of claim 9, further comprising a handle, wherein a cannula is disposed below the handle, and wherein a slot is disposed in the body frame, wherein the cannula is inserted into the slot to secure the handle to the body frame.

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