Upper arm flexor-extensor muscle group rehabilitation apparatus movement balancing mechanism

Abstract

This utility model relates to the field of rehabilitation training assistive devices, specifically to a motion balance mechanism for an upper arm flexor and extensor muscle group rehabilitation device. It includes a main column and a seat component mounted on the main column, as well as a fixed tube mounted on the seat component. Both ends of the fixed tube are equipped with swing units, which are symmetrically distributed on both sides of the seat component. Each swing unit includes a lever, with the lever shaft connected to the end of the fixed tube via a hinge. The lever rotates around the end of the fixed tube. The lever includes a rotating arm and a connecting tube positioned opposite each other on either side of the hinge. The end of the rotating arm is provided with a handle for gripping, and the end of the connecting tube is provided with a counterweight. In this utility model, when the patient grips the handle to perform flexion and extension movements, the torque generated by the rotating arm can be counterbalanced by the counterweight, improving patient comfort and helping to eliminate discomfort during rehabilitation training.

Description

Technical Field

[0001] This utility model relates to the field of rehabilitation training auxiliary devices, specifically to a motion balance mechanism for rehabilitation equipment for the upper arm flexor and extensor muscle groups. Background Technology

[0002] The upper arm flexor and extensor muscle group includes multiple muscle tissues such as the deltoid, teres minor, and subscapularis. When the upper arm flexor and extensor muscle group is injured, it is difficult for the arm to complete flexion and extension movements. At this time, it is necessary to use an upper arm flexor and extensor muscle group rehabilitation device for rehabilitation training to help patients recover the flexion and extension function of the upper limb as soon as possible.

[0003] In existing rehabilitation devices for the upper arm flexor and extensor muscles, one end of the rotating arm can rotate relative to the support. By gripping the handles at the other end of the rotating arm with both hands, flexion and extension movements can be performed, which can be an effective rehabilitation exercise. However, during the exercise, the rotating arm relies on its own weight to provide resistance. When the patient performs flexion and extension movements, the torque generated by the rotating arm varies significantly at different rotation angles, resulting in fluctuating resistance and causing discomfort for the patient during training. Summary of the Invention

[0004] To address the problem in existing upper arm flexor and extensor muscle rehabilitation devices where the torque generated by the rotating arm varies significantly at different rotation angles during flexion and extension movements, leading to fluctuating resistance and discomfort for the patient, this invention proposes a motion balance mechanism for upper arm flexor and extensor muscle rehabilitation devices. When the patient grips the handle and performs flexion and extension movements, the torque generated by the rotating arm can be balanced in the opposite direction by a counterweight, thereby improving the patient's comfort during use.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A rehabilitation device for the upper arm flexor and extensor muscles, comprising a main column and a seat component mounted on the main column, and a fixed tube mounted on the seat component. Each fixed tube has a swing unit at both ends, with two swing units symmetrically distributed on both sides of the seat component. Each swing unit includes a lever, the lever shaft connected to the end of the fixed tube via a hinge, and the lever rotating around the end of the fixed tube. The lever includes a rotating arm and a connecting tube positioned opposite each other on either side of the hinge. The end of the rotating arm has a handle for gripping, and the end of the connecting tube has a counterweight. The torque generated by the rotating arm can be counterbalanced by the counterweight, improving patient comfort during use.

[0007] Furthermore, the seat component includes a support column mounted on a main column, on which a seat cushion and a backrest are mounted. The patient sits on the seat cushion, then straightens their back and rests against the backrest.

[0008] Furthermore, the main column is L-shaped and includes a vertical part and a horizontal part. The support column is tilted backward and fixed on the horizontal part of the main column.

[0009] Furthermore, the fixing tube is horizontally fixed to the upper part of the support column.

[0010] Furthermore, the hinge includes a first sleeve and a second sleeve. The first sleeve is fixed to the end of the fixed tube. Both the first and second sleeves have through holes, and a rotating shaft passes through the through holes. The second sleeve is fitted onto the rotating shaft and rotates with it. One end of the connecting tube and the rotating arm are both fixed to the outer ring surface of the second sleeve. The hinge enables the rotation of the rotating arm and the connecting tube.

[0011] Furthermore, the length of the rotating arm is greater than the length of the connecting pipe.

[0012] The beneficial effects of this utility model through the above technical solution are as follows:

[0013] In this invention, the counterweight improves the balance by adjusting the mass distribution through the lever principle. Specifically, the force exerted by the patient on the handle by the rotating arm is equal to the resistance of the connecting tube multiplied by the counterweight. This means that when the patient grips the handle to perform flexion and extension movements, the torque generated by the rotating arm can be balanced in the opposite direction by the counterweight, which helps to eliminate the patient's discomfort during the rehabilitation training of the upper arm flexion and extension muscles. Attached Figure Description

[0014] Figure 1 This utility model relates to a three-dimensional motion balance mechanism for an upper arm flexor and extensor muscle group rehabilitation device. Figure 1 ;

[0015] Figure 2 This utility model relates to a three-dimensional motion balance mechanism for an upper arm flexor and extensor muscle group rehabilitation device. Figure 2 ;

[0016] Figure 3 This is a top view of the motion balance mechanism of the rehabilitation device for the upper arm flexor and extensor muscle groups according to this utility model;

[0017] Figure 4 This is a schematic diagram of the hinge component in the motion balance mechanism of the rehabilitation device for the upper arm flexor and extensor muscle groups according to this utility model.

[0018] The labels in the attached drawings are:

[0019] 1. Main column; 2. Fixing pipe; 3. Hinge; 301. Sleeve 1; 302. Sleeve 2; 303. Rotating shaft; 4. Rotating arm; 5. Connecting pipe; 6. Handle; 7. Counterweight; 8. Support column; 9. Seat cushion; 10. Backrest. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0021] like Figures 1-4 As shown, this embodiment provides a motion balance mechanism for an upper arm flexor and extensor muscle rehabilitation device, including a main column 1 and a seat component mounted on the main column 1, and a fixed tube 2 disposed on the seat component. Both ends of the fixed tube 2 are provided with swing units, and the two swing units are symmetrically distributed on both sides of the seat component. The swing unit includes a lever, and the lever body is connected to the end of the fixed tube 2 through a hinge 3. The lever rotates around the end of the fixed tube 2. The lever includes a rotating arm 4 and a connecting tube 5 disposed opposite to each other on both sides of the hinge 3. The end of the rotating arm 4 is provided with a handle 6 for the palm to grip, and the end of the connecting tube 5 is provided with a counterweight 7.

[0022] In this invention, the counterweight 7 improves the balance effect by adjusting the mass distribution through the lever principle. Specifically, the force applied by the patient to the handle 6 by the rotating arm 4 is equal to the resistance of the connecting pipe 5 multiplied by the counterweight 7. This means that when the patient grips the handle 6 to perform flexion and extension movements, the torque generated by the rotating arm 4 can be balanced in the opposite direction by the counterweight 7, which improves the patient's comfort during use and helps to eliminate the patient's discomfort during rehabilitation training.

[0023] Specifically, the seat component includes a support column 8 mounted on a main column 1, and a seat cushion 9 and a backrest 10 are mounted on the support column 8. The patient sits on the seat cushion 9, then straightens their back and leans against the backrest 10.

[0024] In this embodiment, the main column 1 is L-shaped and includes a vertical part and a horizontal part. The support column 8 is tilted backward and fixed on the horizontal part of the main column 1. With the above-mentioned structure, the backrest 10 tilts backward, which makes the sitting posture more comfortable.

[0025] The fixing tube 2 is horizontally fixed to the upper part of the support column 8. The width of the fixing tube 2 matches the width of the shoulder in the left-right direction.

[0026] Please refer to this again. Figure 4 The hinge 3 includes a first sleeve 301 and a second sleeve 302. The first sleeve 301 is fixed to the end of the fixed tube 2. Both the first sleeve 301 and the second sleeve 302 have through holes, and a rotating shaft 303 passes through the through holes. The second sleeve 302 is sleeved on the rotating shaft 303 and rotates in cooperation with the rotating shaft 303. One end of the connecting tube 5 and the rotating arm 4 are both fixed to the outer ring surface of the second sleeve 302. The hinge 3 enables the rotation of the rotating arm 4 and the connecting tube 5.

[0027] It is worth mentioning that the length of the rotating arm 4 is greater than the length of the connecting tube 5. The length of the lever arm applied by the patient when gripping the handle 6 directly affects the operating torque. The fact that the length of the rotating arm 4 is greater than the length of the connecting tube 5 means that the patient only needs to apply a small amount of force to complete the action.

[0028] The working principle of this utility model is as follows:

[0029] When using the device, the patient sits on the seat cushion 9, then straightens their back and leans against the backrest 10, extends their arms and grasps the handles 6 with both hands. When force is applied to the handles 6, the counterweight 7 swings up and down. Repeating this several times can achieve the purpose of rehabilitation training. During the training, the counterweight 7 improves the balance effect by adjusting the mass distribution through the lever principle. Specifically, the force of the rotating arm 4 multiplied by the force applied by the patient to the handles 6 is equal to the resistance of the connecting pipe 5 multiplied by the counterweight 7. This means that when the patient grasps the handles 6 to perform flexion and extension movements, the torque generated by the rotating arm 4 can be balanced in the opposite direction by the counterweight 7, thereby improving the patient's comfort when using the device.

[0030] The embodiments described above are merely preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the patent claims of this utility model should be included within the scope of the patent application of this utility model.

Claims

1. A motion balance mechanism for rehabilitation equipment of the upper arm flexor and extensor muscle groups, comprising a main column (1) and a seat component mounted on the main column (1), characterized in that, It also includes a fixed tube (2) set on the seat component. Both ends of the fixed tube (2) are provided with swing units. The two swing units are symmetrically distributed on both sides of the seat component. The swing unit includes a lever. The lever body is connected to the end of the fixed tube (2) through a hinge (3). The lever rotates around the end of the fixed tube (2). The lever includes a rotating arm (4) and a connecting tube (5) set on both sides of the hinge (3). The end of the rotating arm (4) is provided with a handle (6) for the palm to grip. The end of the connecting tube (5) is provided with a counterweight (7).

2. The movement balance mechanism of the upper arm flexor and extensor muscle group rehabilitation device according to claim 1, characterized in that, The seat component includes a support column (8) mounted on a main column (1), and a seat cushion (9) and a backrest (10) are mounted on the support column (8).

3. The motion balance mechanism of the upper arm flexor and extensor muscle group rehabilitation device according to claim 2, characterized in that, The main column (1) is L-shaped and includes a vertical part and a horizontal part. The support column (8) is tilted backward and fixed on the horizontal part of the main column (1).

4. The motion balance mechanism of the upper arm flexor and extensor muscle group rehabilitation device according to claim 2, characterized in that, The fixing tube (2) is horizontally fixed to the upper part of the support column (8).

5. The motion balance mechanism of the upper arm flexor and extensor muscle group rehabilitation device according to claim 1, characterized in that, The hinge (3) includes a first sleeve (301) and a second sleeve (302). The first sleeve (301) is fixed to the end of the fixed tube (2). Both the first sleeve (301) and the second sleeve (302) have through holes and a rotating shaft (303) passes through the through holes. The second sleeve (302) is sleeved on the rotating shaft (303) and rotates with the rotating shaft (303). One end of the connecting tube (5) and the rotating arm (4) are both fixed on the outer ring surface of the second sleeve (302).

6. The motion balance mechanism of the upper arm flexor and extensor muscle group rehabilitation device according to claim 1, characterized in that, The length of the rotating arm (4) is greater than the length of the connecting pipe (5).

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