CN219166990U

CN219166990U - Knee joint rehabilitation training device

Info

Publication number: CN219166990U
Application number: CN202223072933.0U
Authority: CN
Inventors: 赵海鸣; 徐鹏; 刘诚一; 童安阳
Original assignee: Central South University
Current assignee: Central South University
Priority date: 2022-11-18
Filing date: 2022-11-18
Publication date: 2023-06-13
Anticipated expiration: 2032-11-18

Abstract

The utility model provides a knee joint rehabilitation training device. The knee joint rehabilitation training device comprises a supporting component for supporting legs, a driving component for driving the supporting component to rotate and a mounting frame for adjusting the supporting component and the driving component to lift; the lifting driving device is characterized in that a lifting driving end is arranged on the mounting frame, one end of the driving assembly is connected with the lifting driving end, the other end of the driving assembly is provided with a rotary driving end, the vertical height of the rotary driving end is higher than that of the lifting driving end, one end of the supporting assembly is connected with the rotary driving end, the other end of the supporting assembly is provided with a clamping groove, and the clamping groove is close to the lifting driving end. The utility model can adjust the angle of the mounting frame and the supporting component up and down according to the human engineering, is suitable for different rehabilitation patients, and has better comfort level.

Description

Knee joint rehabilitation training device

Technical Field

The utility model relates to the technical field of medical rehabilitation auxiliary equipment, in particular to a knee joint rehabilitation training device.

Background

In the treatment of patients with knee injuries, the following rehabilitation exercises are generally performed (but not limited to): (one) sit and stretch knee: the patient can sit on the chair with feet laid flat on the ground, then gradually straighten the left rear knee and keep the straight leg posture for 5 to 10 seconds, and then slowly put down. Alternating the two legs, and repeating the exercise for 10 to 20 times; (II) prone knee bending: the patient needs to take a prone position, two hands are required to be crossed in front of the head, the head is placed on the arms, then knee joints are gradually bent to be close to buttocks as much as possible, the patient keeps a knee bending posture, and then the patient slowly puts down the patient, and the two legs are alternately performed; and (III) joint loosening: the patient can perform joint loosening to train the elasticity of the ligament and increase the mobility of the joint; and (IV) stretching thigh tendons: the patient puts the injured legs on steps or stairs, then bends the buttocks slightly forwards, the bending is only needed to be performed slightly, the back hearing state is needed to be kept in the process, the patient feels tension behind thighs, the patient holds for thirty seconds and puts down the legs for three times, and then the patient changes the operation of the other foot; etc.

The existing rehabilitation training is generally carried out by manual assistance, if the weight of a patient is heavy, the working strength of nursing staff is increased, and the generated labor cost is high. The knee joint rehabilitation training robot comprises a supporting component, a double-rod hydraulic cylinder and a hydraulic unit, wherein the knee joint rehabilitation training robot can assist human lower limbs to complete training actions by adjusting the set pressure of an electromagnetic overflow valve and outputting thrust and speed, so that passive training or power-assisted training is realized. When the knee joint of the human body is rotated and trained, the set pressure is adjusted to enable the piston rod to receive proper resistance, so that the resistance training is realized. The problem of artificial auxiliary training can be solved, and the use requirements of patients in all stages of exercise capacity recovery can be met.

However, the height of the fixed position at the thigh and the thigh can not be adjusted according to specific people, and the adaptability is poor; and hydraulic pressure is used as a power source, so that the cost is high and the service life is limited.

Disclosure of Invention

The utility model aims to provide a knee joint rehabilitation training device which can be suitable for different rehabilitation patients and has good comfort level.

The technical scheme of the utility model is as follows: the knee joint rehabilitation training device comprises a supporting component for supporting legs, a driving component for driving the supporting component to rotate, and a mounting frame for adjusting the supporting component and the driving component to lift; the lifting driving device is characterized in that a lifting driving end is arranged on the mounting frame, one end of the driving assembly is connected with the lifting driving end, the other end of the driving assembly is provided with a rotary driving end, the vertical height of the rotary driving end is higher than that of the lifting driving end, one end of the supporting assembly is connected with the rotary driving end, the other end of the supporting assembly is provided with a clamping groove, and the clamping groove is close to the lifting driving end.

Preferably, the support assembly comprises a first side plate and a U-shaped plate, two ends of the U-shaped plate are respectively connected with the first side plate, one end, away from the U-shaped plate, of the first side plate is connected with the rotary driving end, and the clamping groove is formed in the U-shaped plate.

Preferably, the driving assembly comprises a supporting base, a driving device, a driving belt pulley, a synchronous belt, a driven belt pulley, a second side plate and a third side plate; the second side plate and the third side plate are respectively arranged at two ends of the supporting base; the driving device is accommodated in the supporting base, an output shaft of the driving device extends out of the second side plate and is connected with the driving belt wheel, and one end, far away from the driving belt wheel, of the second side plate is provided with the driven belt wheel in a rotating mode; the synchronous belt is connected with the driving belt wheel and the driven belt wheel, the supporting component is arranged between the second side plate and the third side plate, the central shaft of the driven belt wheel is connected with one side of the supporting component through the torque sensor, the other side of the supporting component is connected with the third side plate through the rotating shaft, and the mounting frame is arranged at the bottom of the supporting base.

Preferably, the driving assembly further comprises a limiting block, wherein the limiting block is arranged on the inner side surface of the second side plate and the inner side surface of the third side plate, which are close to each other, and the limiting block is provided with an end surface A and an end surface B; the support component is provided with an end face C and an end face D; the support assembly rotates relative to the drive assembly to form a first limit position in which the end face D is in contact with the end face a and a second limit position in which the end face C is in contact with the end face B.

Preferably, limit switches are arranged on the end face A and the end face B.

Preferably, the driving assembly further comprises a tensioning wheel, the tensioning wheel is rotatably mounted on the second side plate, and the tensioning wheel is attached to the outer side of the synchronous belt.

Preferably, the support base comprises a bottom plate and a dust cover connected to the bottom plate, the driving device is arranged in the dust cover, the second side plate and the third side plate are connected with the dust cover, and the mounting frame is connected to the lower end of the bottom plate.

Preferably, the mounting frame comprises a bottom frame, a lifting frame, a top plate and a bolt, wherein a plurality of positioning holes are formed in the axial directions of the bottom frame and the lifting frame, one end of the lifting frame is sleeved in the bottom frame, the top plate is arranged at the other end of the lifting frame, and the lifting frame is lifted relative to the bottom frame to enable at least two positioning holes on the lifting frame to be aligned with at least two positioning holes on the bottom frame and then fixed through the bolt; the top plate is connected with the driving assembly.

Compared with the related art, the utility model has the beneficial effects that:

1. the knee joint rehabilitation training device can adjust the angles of the mounting frame and the supporting component up and down according to human engineering, is suitable for different rehabilitation patients, and has good comfort level;

2. the servo motor is used as a power source, so that the control precision is high while various control modes of active control, passive control and power-assisted control are met;

3. the servo motor is matched with the synchronous belt, so that the structure is more compact, and simultaneously, larger torque is provided, and the torque required by passively controlling the knee joint is achieved;

4. the rotation of the supporting component carries out double limiting protection on the limit position through the mechanical limit of end surface contact and the electrical limit of the limit switch, so that rehabilitation training is safer;

5. the driving assembly transmits torque to the supporting assembly through the torque sensor, so that the torque of the knee joint on the supporting assembly can be obtained in real time, and data support is provided for intelligent control.

Drawings

FIG. 1 is a schematic diagram of a knee rehabilitation training device provided by the utility model;

FIG. 2 is a schematic view of the structure of the lifting frame in FIG. 1;

FIG. 3 is a first visual schematic of the drive assembly of FIG. 1;

FIG. 4 is a second visual schematic of the drive assembly of FIG. 1;

fig. 5 is a schematic structural view of the support assembly of fig. 1.

In the accompanying drawings: 1. a mounting frame; 11. a chassis; 12. a lifting frame; 13. a top plate; 14. positioning holes; 2. a drive assembly; 21. a support base; 22. a driving device; 23. a driving pulley; 24. a synchronous belt; 25. a driven pulley; 26. a second side plate; 27. a third side plate; 28. a torque sensor; 29. a rotating shaft; 210. a limiting block; 211. a limit switch; 212. a tensioning wheel; 213. a bottom plate; 214. a dust cover; 3. a support assembly; 31. a first side plate; 32. a U-shaped plate; 33. a clamping groove.

Detailed Description

The utility model will be described in detail below with reference to the drawings in connection with embodiments. It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. For convenience of description, the words "upper", "lower", "left" and "right" are used hereinafter to denote only the directions corresponding to the upper, lower, left, and right directions of the drawings, and do not limit the structure.

As shown in fig. 1, the knee joint rehabilitation training device provided in this embodiment includes a mounting frame 1, a driving assembly 2 and a supporting assembly 3.

As shown in fig. 2, the mounting frame 1 includes a bottom frame 11, a lifting frame 12, a top plate 13, and a latch. The lifting frame 11 and the lifting frame 12 are square pipes, a plurality of positioning holes 14 are formed in the axial direction of the lifting frame 12, one end of the lifting frame 12 is sleeved in the lifting frame 11, the top plate 13 is arranged at the other end of the lifting frame 12, and the lifting frame 12 is lifted relative to the lifting frame 11, so that at least two positioning holes 14 on the lifting frame 12 are aligned with at least two positioning holes 14 on the lifting frame 11 and then fixed through the bolts. The top plate 13 is lifted and lowered together with the lifting frame 12, thereby forming a lifting drive end.

As shown in fig. 2 and 3, the driving assembly 2 includes a support base 21, a driving device 22, a driving pulley 23, a synchronous belt 24, a driven pulley 25, a second side plate 26, a third side plate 27, a torque sensor 28, a rotating shaft 29, a stopper 210, a limit switch 211, and a tensioning pulley 212.

The support base 21 includes a floor 213 and a dust cover 214 coupled to the floor 213. The driving device 22 is a servo motor, which is disposed in the dust cover 214. The second side plate 26 and the third side plate 27 have the same shape and are arranged in parallel. The second side plate 26 and the third side plate 27 have one end adapted to the dust cover 214 and connected to a rectangular plate, and the other end is a circular plate for mounting the support assembly 3. The rectangular plate is connected with the circular plate through an inclined plate which is inclined upwards. The bottom plate 213 is placed on the top plate 13 and is connected by bolts.

The motor shaft of the driving device 22 extends out of the second side plate 26 and is connected with the driving pulley 23, and the driven pulley 25 is rotatably arranged at one end of the second side plate 26 away from the driving pulley 23. The timing belt 24 is connected to the driving pulley 23 and the driven pulley 25. The center shaft of the driven pulley 25 is provided with the torque sensor 28. The circular plate of the third side plate 27 is rotatably provided with the rotation shaft 29.

The inner sides of the second side plate 26 and the third side plate 27, which are close to each other, are respectively provided with a limiting block 210, and the limiting block 210 is provided with an end face a and an end face B. Limit switches 211 are provided on both the end face a and the end face B. The tension pulley 212 is rotatably mounted on the second side plate 26, and the tension pulley 212 is attached to the outer side of the timing belt 24 (located on the opposite side of the driving pulley 23 and disposed close to the driving pulley 23).

As shown in fig. 5, the support assembly 3 includes a first side plate 31 and a U-shaped plate 32, and two ends of the U-shaped plate 32 are respectively connected to the first side plate 31. One end of the first side plate 31, which is far from the U-shaped plate 32, is connected to the torque sensor 28, and one end of the first side plate 31, which is far from the U-shaped plate 32, is connected to the rotating shaft 29, thereby forming a rotational driving end. The vertical height of the rotary driving end is higher than that of the lifting driving end. The U-shaped plate 32 is provided with a clamping groove 33 for placing the legs. The corners of the clamping groove 33 and the first side plate 31 are arc-shaped chamfer angles. The upper end surface of the first side plate 31 is an end surface C, and the lower end surface is an end surface D. The clamping groove 33 of the installed support assembly 3 is arranged close to the lifting driving end.

The driving device 22 drives the driven pulley 25 to rotate through the driving pulley 23 and the synchronous belt 24, the driven pulley 25 transmits torque to the supporting component 3, the supporting component 3 rotates relative to the driving component 2, and the self-locking of any rotating angle of the supporting component 3 is realized through the driving device 22. The torque sensor 28 is used to sense the torque level of the support assembly 3. The above operations can be realized by a simple control system including start/stop of the driving device 22, judgment of the sensing signal of the torque sensor 28, judgment of the sensing signal of the limit switch 211, and the like, and a remote control switch, and the program is specifically set as in the related art. The rotation of the support assembly 3 forms two extreme positions, a first extreme position and a second extreme position: in the first limit position, the end face D contacts the end face a, and in the second limit position, the end face C contacts the end face B and is sensed by the limit switch 211.

If one of the sitting positions is adopted for the rehabilitation training of extending the knees, a patient sits on a chair, lays the feet on the ground, and adjusts the mounting frame 1 to a proper height position. One or both legs are straightened and placed in the clamping groove 33 of one or both support assemblies 3, and then the support assemblies 3 are rotated by the remote control switch, so that the clamping groove 33 is placed at a proper angle. The straight leg posture is kept for 5 to 10 seconds and then slowly put down. The legs are alternated and the exercises are repeated 10 to 20 times.

The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present utility model.

Claims

1. The knee joint rehabilitation training device is characterized by comprising a supporting component (3) for supporting legs, a driving component (2) for driving the supporting component (3) to rotate, and a mounting frame (1) for adjusting the supporting component (3) and the driving component (2) to lift; the lifting driving device is characterized in that a lifting driving end is arranged on the mounting frame (1), one end of the driving assembly (2) is connected with the lifting driving end, the other end of the driving assembly is provided with a rotary driving end, the vertical height of the rotary driving end is higher than that of the lifting driving end, one end of the supporting assembly (3) is connected with the rotary driving end, the other end of the supporting assembly is provided with a clamping groove (33), and the clamping groove (33) is close to the lifting driving end.

2. The knee joint rehabilitation training device according to claim 1, wherein the supporting component (3) comprises a first side plate (31) and a U-shaped plate (32), two ends of the U-shaped plate (32) are respectively connected with the first side plate (31), one end, far away from the U-shaped plate (32), of the first side plate (31) is connected with the rotary driving end, and the clamping groove (33) is formed in the U-shaped plate (32).

3. The knee rehabilitation training device according to claim 1, characterized in that the drive assembly (2) comprises a support base (21), a drive device (22), a driving pulley (23), a synchronous belt (24), a driven pulley (25), a second side plate (26) and a third side plate (27); the second side plate (26) and the third side plate (27) are respectively arranged at two ends of the supporting base (21); the driving device (22) is accommodated in the supporting base (21), an output shaft of the driving device (22) extends out of the second side plate (26) and is connected with the driving pulley (23), and one end, far away from the driving pulley (23), of the second side plate (26) is rotatably provided with the driven pulley (25); the synchronous belt (24) is connected with a driving pulley (23) and a driven pulley (25), the supporting component (3) is arranged between the second side plate (26) and the third side plate (27), the central shaft of the driven pulley (25) is connected with one side of the supporting component (3) through a torque sensor (28), the other side of the supporting component (3) is connected with the third side plate (27) through a rotating shaft (29), and the mounting frame (1) is arranged at the bottom of the supporting base (21).

4. A knee joint rehabilitation training device according to claim 3, wherein the driving assembly (2) further comprises a limiting block (210), the limiting block (210) is arranged on the inner side surfaces of the second side plate (26) and the third side plate (27) which are close to each other, and an end surface a and an end surface B are arranged on the limiting block (210); an end face C and an end face D are arranged on the supporting component (3); the support assembly (3) rotates relative to the drive assembly (2) to form a first extreme position in which the end face D is in contact with the end face a and a second extreme position in which the end face C is in contact with the end face B.

5. The knee joint rehabilitation training device according to claim 4, wherein limit switches (211) are provided on both the end face a and the end face B.

6. A knee joint rehabilitation training device according to claim 3, characterized in that the drive assembly (2) further comprises a tensioning wheel (212), the tensioning wheel (212) is rotatably mounted on the second side plate (26), and the tensioning wheel (212) is attached to the outer side of the synchronous belt (24).

7. A knee rehabilitation training device according to claim 3, characterized in that the support base (21) comprises a bottom plate (213) and a dust cover (214) connected to the bottom plate (213), the driving device (22) is arranged in the dust cover (214), the second side plate (26) and the third side plate (27) are connected with the dust cover (214), and the mounting frame (1) is connected to the lower end of the bottom plate (213).

8. The knee joint rehabilitation training device according to claim 1, wherein the mounting frame (1) comprises a bottom frame (11), a lifting frame (12), a top plate (13) and a bolt, a plurality of positioning holes (14) are formed in the axial directions of the bottom frame (11) and the lifting frame (12), one end of the lifting frame (12) is sleeved in the bottom frame (11), the top plate (13) is arranged at the other end of the lifting frame, the lifting frame (12) is lifted relative to the bottom frame (11) to enable at least two positioning holes (14) on the lifting frame (12) to be aligned with at least two positioning holes (14) on the bottom frame (11) and then fixed through the bolt; the top plate (13) is connected with the driving assembly (2).