Multi-joint muscle strength rehabilitation training device
The automatic adjustment plate position driven by a threaded rod and servo motor solves the problem of inconvenient adjustment of the lower leg fixed position in existing equipment, achieving the effect of simplifying operation and improving convenience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGZHOU HUAWEI MEDICAL EQUIPMENT CO LTD
- Filing Date
- 2025-07-14
- Publication Date
- 2026-06-19
AI Technical Summary
Existing multi-joint muscle strength rehabilitation training equipment is cumbersome to operate when adjusting the fixed position of the lower leg, requiring manual adjustment of bolts, which makes structural adjustment inconvenient.
The system employs a threaded rod and servo motor drive, achieving automatic adjustment of the adjustment plate by rotating the threaded rod and limit rod. Combined with servo motor control, this simplifies the position adjustment process.
The device improves the ease of position adjustment and use of the lower leg fixation structure in multi-joint muscle strength rehabilitation training equipment, reduces manual operation, and enhances the applicability and convenience of the equipment.
Smart Images

Figure CN224370192U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of muscle strength rehabilitation technology, specifically to a multi-joint muscle strength rehabilitation training device. Background Technology
[0002] The multi-joint muscle strength rehabilitation training equipment consists of a main unit, extenders (wrist joint extender, finger extender, upper limb extender, lower limb extender, upper limb comprehensive training extender, ankle joint extender), a support frame, an emergency stop switch, and dedicated software for the multi-joint isokinetic training and assessment system.
[0003] Currently, multi-joint muscle strength rehabilitation training equipment simply requires fixing the lower leg to the swing arm and using the reciprocating motion of the swing arm for muscle strength rehabilitation training. However, due to differences in patient body shape and age, it is necessary to adjust the position of the adjustment plate on the swing arm to facilitate fixing the position and adapt to the lower leg position. Currently, the adjustment plate is mostly fixed by bolts for limiting the position. This method requires turning the bolts, adjusting the position of the adjustment plate, and then re-tightening the bolts, which makes the structural adjustment troublesome and requires manual assistance from staff, which is very troublesome. Utility Model Content
[0004] The purpose of this invention is to provide a multi-joint muscle strength rehabilitation training device to solve the problem that adjusting the lower leg fixation position is very troublesome in the current multi-joint muscle strength rehabilitation training devices.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a multi-joint muscle strength rehabilitation training device, comprising a device body, a turntable rotatably disposed at the front end of the device body, a swing arm disposed on one side of the turntable, a mounting plate fixedly disposed at the movable end of the swing arm, a threaded rod rotatably disposed on one side of the mounting plate, an adjusting plate threadedly sleeved on the outer side of the threaded rod, the adjusting plate being slidably sleeved on the outer side of the swing arm through an opening, a fixing component disposed on one side of the adjusting plate, and the threaded rod and the swing arm being arranged parallel to each other.
[0006] Preferably, a fixing member is fixedly provided at the front end of the turntable. A first fixing hole and a second fixing hole are provided on one side of the fixing member. The threaded rod is located in the cavity of the first fixing hole. The swing arm slides in the cavity of the second fixing hole. A linear array of through holes is provided on one side of the swing arm. A limit hole is formed on the inner wall of one side of the second fixing hole. A limit rod is threaded in the limit hole. The movable end of the limit rod is located in the cavity of the through hole. The fixing member is located at the axis of the turntable.
[0007] Preferably, a first bevel gear and a rotating tube are rotatably disposed on the inner wall of the first fixing hole, and a second bevel gear that meshes with the first bevel gear is fixedly sleeved on the outer side of the rotating tube. The rotating tube is slidably sleeved on the outer side of the threaded rod, and the first bevel gear and the second bevel gear are arranged perpendicular to each other.
[0008] Preferably, a keyway is provided on one side of the threaded rod, and a key block is slidably disposed in the cavity of the keyway, the key block being fixed to the inner wall of the rotating tube.
[0009] Preferably, a first spur gear is fixedly sleeved on the outer side of the turntable, and a second spur gear is meshed with one side of the first spur gear. The second spur gear rotates within the device body, and a first servo motor that drives the second spur gear to rotate is provided within the device body.
[0010] Preferably, a second servo motor is installed inside the turntable, and the output shaft of the second servo motor is fixedly connected to the axis of the first bevel gear. A controller is provided on the main body of the device, and the controller is electrically connected to the power supply. Both the first servo motor and the second servo motor are electrically connected to the controller.
[0011] Preferably, the fixing component includes a fixing frame rotatably disposed on one side of the adjusting plate, two shaft rollers are fixedly disposed on one side of the fixing frame, and a pad is slidably sleeved on the outer side of the shaft rollers. The two pads are arranged parallel to each other and perpendicular to each other with respect to the swing arm.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] 1. This application uses a threaded rod to make the adjusting plate move axially along the swing arm by rotating the threaded rod. This allows the position of the adjusting plate to be adjusted according to the position of the lower leg. The device is simple to operate and convenient to use, thus effectively improving the position adjustment convenience of the lower leg fixation structure of the multi-joint muscle strength rehabilitation training equipment.
[0014] 2. By setting a limiting rod and a rotating tube, this application facilitates the disassembly and assembly of the swing arm and the adjustment of the fixed position of the swing arm, thereby effectively improving the applicability of the multi-joint muscle strength rehabilitation training equipment.
[0015] 3. This application sets up a first bevel gear, a second bevel gear, and a second servo motor. The rotation of the threaded rod is controlled by the second servo motor, so there is no need for manual adjustment, thereby effectively improving the ease of use of the multi-joint muscle strength rehabilitation training equipment.
[0016] 4. By setting up two pads, this application improves the ease of use of multi-joint muscle strength rehabilitation training equipment compared to the existing technology that uses straps and Velcro to bind the lower leg. This structure only requires the lower leg to be placed between the two pads, thus requiring staff assistance for binding or the patient to bind it themselves. Attached Figure Description
[0017] Figure 1 This is a three-dimensional schematic diagram of the overall multi-joint muscle strength rehabilitation training device of this utility model;
[0018] Figure 2 This is a three-dimensional schematic diagram of the combination of the turntable, swing arm, and fixing components of the multi-joint muscle strength rehabilitation training equipment of this utility model;
[0019] Figure 3 This is a three-dimensional cross-sectional view of the turntable, swing arm and fixing components of the multi-joint muscle strength rehabilitation training device of this utility model.
[0020] Figure 4 This is a three-dimensional cross-sectional view of the turntable of the present invention, applicable to a multi-joint muscle strength rehabilitation training device.
[0021] Figure 5 This is a three-dimensional schematic diagram of the cooperation between the fixed component and the swing arm of the present invention, which is applicable to a multi-joint muscle strength rehabilitation training device.
[0022] The following are the labeling elements in the diagram: 1. Device body; 2. Turntable; 3. Swing arm; 4. Mounting plate; 5. Threaded rod; 6. Adjusting plate; 7. Fixing assembly; 701. Fixing frame; 702. Pad; 8. Fixing component; 9. First fixing hole; 10. Second fixing hole; 11. Through hole; 12. Limiting rod; 13. First bevel gear; 14. Rotary tube; 15. Second bevel gear; 16. Keyway; 17. Key block; 18. First spur gear; 19. Second spur gear; 20. First servo motor; 21. Second servo motor. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] Example: Figure 1 - Figure 5 As shown, this utility model provides a technical solution for a multi-joint muscle strength rehabilitation training device, including a device body 1, a turntable 2 rotatably mounted at the front end of the device body 1, a swing arm 3 mounted on one side of the turntable 2, a mounting plate 4 fixedly mounted on the movable end of the swing arm 3, a threaded rod 5 rotatably mounted on one side of the mounting plate 4, an adjusting plate 6 threadedly mounted on the outer side of the threaded rod 5, the adjusting plate 6 being slidably mounted on the outer side of the swing arm 3 through an opening, a fixing component 7 mounted on one side of the adjusting plate 6, and the threaded rod 5 and the swing arm 3 being arranged parallel to each other.
[0025] like Figure 3 and Figure 4 As shown, a fixing member 8 is fixedly installed at the front end of the turntable 2. A first fixing hole 9 and a second fixing hole 10 are provided on one side of the fixing member 8. The threaded rod 5 is located in the cavity of the first fixing hole 9. The swing arm 3 slides in the cavity of the second fixing hole 10. A linear array of through holes 11 is provided on one side of the swing arm 3. A limit hole is formed on the inner wall of one side of the second fixing hole 10. A limit rod 12 is threaded in the limit hole. The movable end of the limit rod 12 is located in the cavity of the through hole 11. The fixing member 8 is located at the axis of the turntable 2.
[0026] Specifically, the swing arm 3 is inserted into the cavity of the second fixing hole 10, and the swing arm 3 is aligned with the limiting hole corresponding to the through hole 11. Then, the limiting rod 12 is rotated so that the limiting rod 12 passes through the cavity of the through hole 11, and the limiting rod 12 is used to limit and fix the swing arm 3. Meanwhile, the threaded rod 5 is inserted into the inside of the rotating tube 14. At this time, the keyway 16 and the key block 17 are used to cooperate, and the rotating tube 14 can drive the threaded rod 5 to rotate.
[0027] like Figure 2 - Figure 4 As shown, a first bevel gear 13 and a rotating tube 14 are rotatably mounted on the inner wall of the first fixing hole 9. A second bevel gear 15, which meshes with the first bevel gear 13, is fixedly sleeved on the outer side of the rotating tube 14. The rotating tube 14 is slidably sleeved on the outer side of the threaded rod 5. The first bevel gear 13 and the second bevel gear 15 are arranged perpendicular to each other.
[0028] like Figure 1 - Figure 5 As shown, a keyway 16 is provided on one side of the threaded rod 5, and a key block 17 is slidably disposed in the cavity of the keyway 16. The key block 17 is fixed on the inner wall of the rotating tube 14.
[0029] like Figure 2 - Figure 4 As shown, a first spur gear 18 is fixedly sleeved on the outer side of the turntable 2, and a second spur gear 19 is meshed with one side of the first spur gear 18. The second spur gear 19 rotates inside the device body 1, and a first servo motor 20 is provided inside the device body 1 to drive the second spur gear 19 to rotate.
[0030] like Figure 2 - Figure 4 As shown, a second servo motor 21 is installed inside the turntable 2. The output shaft of the second servo motor 21 is fixedly connected to the shaft of the first bevel gear 13. A controller is provided on the main body 1 of the device. The controller is electrically connected to the power supply. Both the first servo motor 20 and the second servo motor 21 are electrically connected to the controller.
[0031] Specifically, the controller, the second servo motor 21, and the first servo motor 20 are all existing technology devices, and their specific forms and usage methods will not be described in detail in this application.
[0032] like Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, the fixing component 7 includes a fixing frame 701 rotatably mounted on one side of the adjusting plate 6. Two shaft rollers are fixedly mounted on one side of the fixing frame 701. A pad 702 is slidably sleeved on the outer side of the shaft rollers. The two pads 702 are arranged parallel to each other, and the pads 702 are perpendicular to the swing arm 3.
[0033] Specifically, a sponge pad is fitted on the outside of the pad 702.
[0034] Working principle: The controller is activated based on the position of the patient's lower leg. The controller controls the operation of the second servo motor 21. The second servo motor 21 drives the second bevel gear 15 to rotate through the first bevel gear 13. The second bevel gear 15 drives the threaded rod 5 to rotate through the rotating tube 14. The threaded rod 5 drives the adjusting plate 6 to slide on the swing arm 3, thereby adjusting the position of the fixing component 7. After the adjustment is completed, the patient can place the lower leg between the two pads 702. Then, the controller is activated to start the first servo motor 20. The first servo motor 20 drives the first spur gear 18 to rotate through the second spur gear 19. The first spur gear 18 drives the turntable 2. The turntable 2 drives the swing arm 3 to swing and train the joint muscle strength.
[0035] The multi-joint isokinetic training and assessment system is based on the principle of isokinetic movement and uses dynamic impedance control technology to achieve various muscle strength training modes such as isokinetic, isometric, and isotonic. The system is equipped with high-precision sensors to collect data such as muscle contraction force and joint angles in real time, and uses computer analysis to generate quantitative assessment indicators, such as peak torque and endurance, providing a basis for personalized training programs. Its multiple training modes (such as active, passive, and assisted training) can be flexibly adjusted according to the patient's rehabilitation stage and needs, and it also has an automatic resistance adjustment function to ensure the safety and adaptability of training.
[0036] Isokinetic exercise: The speed of isokinetic exercise (rotational angular velocity of arm 3) is preset on the isokinetic instrument. Once the speed is set, no matter how much force (torque) the subject uses, the speed of the limb movement will not exceed the preset speed. The subject's subjective force can only increase muscle tension and muscle output power, but cannot produce acceleration. The multi-joint isokinetic training and assessment system is based on the principle of isokinetic exercise and the setting of isokinetic exercise are existing technologies, which will not be described in detail in this application.
[0037] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A multi-articulated myorehabilitation training device, comprising a device body (1), characterized in that: The device body (1) has a turntable (2) rotatably mounted at its front end. A swing arm (3) is mounted on one side of the turntable (2). A mounting plate (4) is fixedly mounted on the movable end of the swing arm (3). A threaded rod (5) is rotatably mounted on one side of the mounting plate (4). An adjusting plate (6) is threadedly mounted on the outside of the threaded rod (5). The adjusting plate (6) is slidably mounted on the outside of the swing arm (3) through a sliding hole. A fixing component (7) is mounted on one side of the adjusting plate (6).
2. The multi-articulating muscle force rehabilitation training device of claim 1, wherein: The turntable (2) is fixedly provided with a fixing member (8) at the front end. The fixing member (8) has a through-hole first fixing hole (9) and a second fixing hole (10) on one side. The threaded rod (5) is located in the cavity of the first fixing hole (9). The swing arm (3) slides in the cavity of the second fixing hole (10). The swing arm (3) has a linear array of through holes (11) on one side. A limiting hole is formed on the inner wall of one side of the second fixing hole (10). A limiting rod (12) is threaded in the limiting hole. The movable end of the limiting rod (12) is located in the cavity of the through hole (11).
3. The multi-articulating muscle force rehabilitation training device of claim 2, wherein: A first bevel gear (13) and a rotating tube (14) are rotatably disposed on the inner wall of the first fixing hole (9). A second bevel gear (15) that meshes with the first bevel gear (13) is fixedly sleeved on the outer side of the rotating tube (14). The rotating tube (14) is slidably sleeved on the outer side of the threaded rod (5).
4. The multi-joint muscle strength rehabilitation training device according to claim 3, characterized in that: A keyway (16) is provided on one side of the threaded rod (5), and a key block (17) is slidably disposed in the cavity of the keyway (16), and the key block (17) is fixed on the inner wall of the rotating tube (14).
5. The multi-joint muscle strength rehabilitation training device according to claim 4, characterized in that: A first spur gear (18) is fixedly sleeved on the outside of the turntable (2). A second spur gear (19) is meshed on one side of the first spur gear (18). The second spur gear (19) rotates inside the device body (1). A first servo motor (20) that drives the second spur gear (19) to rotate is provided inside the device body (1).
6. The multi-joint muscle strength rehabilitation training device according to claim 1, characterized in that: The turntable (2) is equipped with a second servo motor (21), and the output shaft of the second servo motor (21) is fixedly connected to the axis of the first bevel gear (13).
7. The multi-joint muscle strength rehabilitation training device according to claim 1, characterized in that: The fixing component (7) includes a fixing frame (701) rotatably disposed on one side of the adjusting plate (6). Two shaft rollers are fixedly disposed on one side of the fixing frame (701), and a pad (702) is slidably sleeved on the outer side of the shaft rollers.