Multi-angle ankle mobility training brace

Abstract

The utility model relates to multi -angle ankle joint range of motion training support, including fixed support and symmetrical setting training unit at fixed support both sides, training unit includes motor one, the training disc of controlled to motor one, motor two and the footboard of controlled to motor two, the training disc is rotationally arranged to the fixed support outside, and the motor one for controlling the training disc circumferential rotation is set up in the fixed support, training disc both sides all are provided with the fixed plate, and the footboard is rotationally arranged between two fixed plates, and the footboard exists interval with the training disc, and the motor two for controlling the footboard pitch swing is set up on the training disc between two fixed plates. The utility model can drive the patient ankle joint to carry out dorsiflexion and plantar flexion, varus and eversion, internal rotation and external rotation activity training, and has increased the freedom degree of training.

Description

Technical Field

[0001] This utility model relates to the field of medical rehabilitation equipment technology, and in particular to a multi-angle ankle joint range of motion training bracket. Background Technology

[0002] Ankle rehabilitation exercises are crucial for the recovery and prevention of ankle injuries. Common exercises include ankle rotation, ankle extension and flexion, and single-leg balance exercises. In addition to self-directed exercises, rehabilitation equipment can be used to assist in ankle rehabilitation.

[0003] Multi-degree-of-freedom exercise is beneficial for ankle rehabilitation, but some training devices have low degrees of freedom and limited functions, which greatly reduces the training effect. For example, a novel ankle flexion and extension training device disclosed in CN210645004U uses a servo motor as a power source. The servo motor drives the training shaft to rotate through gear transmission, which in turn drives the foot pedals at both ends of the training shaft to swing, thus only achieving the purpose of ankle flexion and extension training. Utility Model Content

[0004] To address the issue of low freedom of movement in some rehabilitation training devices, this invention provides a multi-angle ankle joint range of motion training bracket. By increasing the freedom of movement of the training device, the device's functions are diversified, meeting the needs of multi-angle ankle joint rehabilitation training.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A multi-angle ankle joint range of motion training frame includes a fixed frame and training units symmetrically arranged on both sides of the fixed frame. The training unit includes a motor one, a training disc controlled by motor one, a motor two, and a foot pedal controlled by motor two. The training disc is rotatably mounted on the outside of the fixed bracket, and a motor for controlling the circumferential rotation of the training disc is installed inside the fixed bracket. The training disc has fixed plates on both sides, and a foot pedal is rotatably mounted between the two fixed plates. The foot pedal is spaced apart from the training disc so as not to interfere with the rotation of the foot pedal. The training disc between the two fixed plates is equipped with a second motor for controlling the pitch and swing of the foot pedal.

[0006] Furthermore, the fixed bracket includes a plate frame and a fixed shell, which are connected and fixed. The first motor is installed inside the fixed shell. The first motor is a flat stepper motor, which reduces the space occupied by the first motor.

[0007] Furthermore, the training disc has a "T" shaped cross-section, with the middle part of the training disc passing through the fixed shell and inserted into the motor. The middle part of the training disc is connected and fixed to the rotor of the motor, which facilitates the rotation of the training disc. A planar bearing is also provided between the training disc and the fixed shell, which improves the smoothness of the training disc rotation.

[0008] Furthermore, the foot pedal is equipped with straps, and rotating plates are provided on both sides below the foot pedal, with the rotating plates and the fixed plates corresponding one to one; The second motor includes a hollow shaft stepper motor and a swing shaft fixedly installed inside the hollow shaft stepper motor, with both ends of the swing shaft extending out of the hollow shaft stepper motor.

[0009] Furthermore, prism segments are provided at both ends of the swing shaft. The prism segments pass through the rotating plate and cooperate with the rotating plate to drive the rotating plate to rotate. The end of the swing shaft passes through the fixed plate and is rotatably connected to the fixed plate.

[0010] Furthermore, an indicator block is provided on the edge of the training disc, and a rotation scale is provided on the fixed bracket at the edge of the training disc. The indicator block swings within the rotation scale range to facilitate the display of the swing angle. Two limiting rods are provided on the fixed bracket at the edge of the training disc, and the indicator block swings between the two limiting rods to facilitate limiting the rotation angle of the foot pedal.

[0011] Furthermore, indicator plates are provided on both sides of the training plate, and the indicator plates are arranged side by side with the fixed plate. Arc-shaped limiting grooves are provided on the indicator plates, and swing scales are provided on the indicator plates at the edge of the limiting grooves. The indicator plate is connected to a swing plate controlled by the foot pedal. One end of the swing plate is provided with a swing rod, which slides in a limiting groove to facilitate the restriction of the swing of the foot pedal.

[0012] Furthermore, it also includes a mounting bracket, the mounting bracket having an "I" shaped cross-section, and a fixed bracket rotatably mounted on the mounting bracket, the fixed bracket being perpendicular or parallel to the mounting bracket.

[0013] The beneficial effects of this utility model through the above technical solution are: This invention uses a motor to drive the training disc to rotate in a circular motion, while the foot pedal rotates simultaneously. When the foot is placed on the foot pedal, the circular rotation of the foot pedal enables the ankle joint to perform internal and external rotation training. During this process, the indicator block swings between two limit rods to prevent excessive rotation of the foot pedal due to accidental failure of the motor.

[0014] This invention uses a second motor to drive the foot pedal to tilt and swing. When the foot is placed on the foot pedal, the tilting and swinging of the foot pedal can drive the ankle joint to perform dorsiflexion and plantarflexion training. During this process, the swing rod swings within the limit groove, which can prevent the foot pedal from swinging excessively due to accidental failure of the second motor. Attached Figure Description

[0015] Figure 1 This is the front view of the multi-angle ankle joint range of motion training bracket of this utility model.

[0016] Figure 2 This utility model is a multi-angle ankle joint range of motion training bracket. Figure 1 Diagram of direction A in the middle.

[0017] Figure 3 This utility model is a multi-angle ankle joint range of motion training bracket. Figure 1 Diagram of direction B in the middle.

[0018] Figure 4 This is a schematic diagram of the limiting measure in Embodiment 2 of the multi-angle ankle joint range of motion training bracket of this utility model.

[0019] Figure 5 This is a schematic diagram of the second limiting measure in Embodiment 2 of the multi-angle ankle joint range of motion training bracket of this utility model.

[0020] Figure 6 This is a schematic diagram of Embodiment 3 of the multi-angle ankle joint range of motion training bracket of this utility model.

[0021] The attached diagram is labeled as follows: 1 Fixed bracket, 101 Plate frame, 102 Fixed shell, 2 Training unit, 3 Motor 1, 4 Training plate, 5 Motor 2, 51 Hollow shaft stepper motor, 52 Swing shaft, 6 Foot pedal, 7 Surface bearing, 8 Fixed plate, 9 Rotating plate, 10 Strap, 11 Indicator block, 12 Rotation scale, 13 Limiting rod, 14 Indicator plate, 15 Limiting groove, 16 Swing scale, 17 Swing plate, 18 Swing short rod, 19 Mounting bracket, 20 Hinge shaft, 21 Horizontal bolt, 22 Vertical bolt. Detailed Implementation

[0022] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings: Example

[0023] like Figures 1-3 As shown, a multi-angle ankle range of motion training frame is installed at the foot of the medical bed to... Figure 1 The training support is installed in the vertical orientation shown. It includes a fixed support 1 and training units 2 symmetrically arranged on both sides of the fixed support 1.

[0024] The fixed bracket 1 serves as the installation base. The fixed bracket 1 includes a frame 101 and a fixed shell 102, which are connected and fixed to ensure the structural strength of the fixed bracket 1. The fixed bracket 1 is vertically arranged and fixedly installed at the foot of the medical bed.

[0025] The two training units 2 on the fixed support 1 correspond to the patient's two feet respectively, and rehabilitation training of the two ankle joints can be performed simultaneously using the training units 2. The training unit 2 includes a motor 3, a training plate 4 controlled by the motor 3, a second motor 5, and a foot pedal 6 controlled by the second motor 5.

[0026] Motor 3 is a flat stepper motor. During installation, motor 3 is installed inside the fixed bracket 1 to control the circumferential rotation of the training plate 4. Specifically, motor 3 is installed inside the fixed housing 102.

[0027] The training disc 4 is a stepped cylinder with a "T"-shaped cross-section. During installation, the training disc 4 is rotatably mounted on the fixed bracket 1. Specifically, the middle part of the training disc 4 passes through the fixed shell 102 and is inserted into the motor 3, and the middle part of the training disc 4 is connected and fixed to the rotor of the motor 3. In this way, the operation of the motor 3 can drive the training disc 4 to rotate circumferentially.

[0028] To improve the smoothness of the rotation of the training disc 4, a planar bearing 7 is provided between the training disc 4 and the fixed shell 102. The planar bearing 7 is sleeved on the training disc 4, and the training disc 4 and the fixed shell 102 clamp the planar bearing 7 to prevent friction between the training disc 4 and the fixed shell 102.

[0029] Fixed plates 8 are provided on both sides of the training disc 4. The training disc 4 rotates in a circle, which can drive the fixed plates 8 to rotate together. A foot pedal 6 is rotatably installed between the two fixed plates 8. When the foot pedal 6 is installed, rotating plates 9 are provided on both sides below the foot pedal 6. The rotating plates 9 correspond one-to-one with the fixed plates 8. With the fixed plates 8 fixed, the rotating plates 9 can rotate and drive the foot pedal 6 to swing.

[0030] Here, a second motor 5 is installed on the training plate 4 between the two fixed plates 8. The second motor 5 drives the rotating plate 9 to move, thereby controlling the pitch and oscillation of the foot pedal 6. The second motor 5 includes a hollow shaft stepper motor 51 and a swing shaft 52 fixedly inserted inside the hollow shaft stepper motor 51. The swing shaft 52 is a cylinder, with both ends extending out of the hollow shaft stepper motor 51. The hollow shaft stepper motor 51 can drive the swing shaft 52 to rotate.

[0031] The hollow shaft stepper motor 51 can also be a conventional stepper motor. A worm gear is connected to the output shaft of this stepper motor, and a worm wheel is connected to the middle of the swing shaft 52. The worm gear and worm wheel mesh, thus driving the swing shaft 52 to rotate via the conventional stepper motor and the worm gear transmission. The worm gear transmission method is existing technology and will not be described in detail here.

[0032] The swing shaft 52 can drive the foot pedal 6 to swing. Specifically, the swing shaft 52 has prism segments at both ends. The prism segments are machined and have a prism-shaped outer contour, not a cylinder. The prism segments are not shown in the figure. The prism segments pass through the rotating plate 9 and cooperate with the rotating plate 9. That is, the rotating plate 9 has prism holes. Through the cooperation between the prism segments and the prism holes, the swing shaft 52 can drive the two rotating plates 9 to rotate simultaneously, and thus the foot pedal 6 swings accordingly. The end of the swing shaft 52 is still cylindrical and passes through the fixed plate 8 and is rotatably connected to the fixed plate 8.

[0033] The foot pedal 6 is used to place the patient's feet, so the foot pedal 6 has a certain length. In order to ensure that the foot pedal 6 can swing, the installed foot pedal 6 must have a sufficient gap with the training plate 4 to ensure that the training plate 4 will not interfere with the swing of the foot pedal 6.

[0034] The principle of this invention is as follows: After the training bracket is installed at the foot of the medical bed, the patient lies flat on the medical bed with both feet placed on the foot pedal 6. Simultaneously, straps 10 are installed on the foot pedal 6 to restrain the feet and prevent them from slipping off during training. In the initial state, after motor 3 is powered on, the foot pedal 6 remains vertical; after motor 5 is powered on, the foot pedal 6 remains parallel to the training disc 4.

[0035] The motor 3 is controlled to reciprocate, and the training disc 4 follows the reciprocating motion, which in turn drives the foot pedal 6 to rotate in a circle around the training disc 4. At this time, the foot performs reciprocating motions of external and internal rotation, and the positions of the toes and heels change from left to right, thereby training the ankle joint.

[0036] The motor 5 is controlled to swing back and forth, and the swing shaft 52 follows the swing back and forth. This drives the foot pedal 6 to swing up and down around the swing shaft 52 as the center of rotation. At this time, the foot performs dorsiflexion and plantarflexion reciprocating movements, and the position of the toes and heels will change, thereby training the ankle joint. Example

[0037] This embodiment is basically the same as Embodiment 1, and the similarities will not be repeated. The difference is that, in order to limit the multi-degree-of-freedom training of the ankle joint and prevent dangerous situations caused by unexpected motor failure, this embodiment also includes a limit mechanism, such as... Figures 4-5 As shown.

[0038] Limitation measure one: such as Figure 4 As shown, an indicator block 11 is provided on the edge of the training disc 4. The indicator block 11 is a triangular block, and the training disc 4 drives the indicator block 11 to rotate together. A rotation scale 12 is provided on the fixed bracket 1 at the edge of the training disc 4. The indicator block 11 swings within the range of the rotation scale 12, so as to intuitively display the angle of the circumferential rotation of the foot pedal 6.

[0039] Two limiting rods 13 are threaded onto the fixed bracket 1 at the edge of the training disc 4, and the indicator block 11 swings between the two limiting rods 13. When the indicator block 11 is against the limiting rod 13, the training disc 4 can no longer rotate. Therefore, even if the motor 3 fails unexpectedly during ankle joint external and internal rotation exercises, the training disc 4 will not rotate a large range due to the restriction of the two limiting rods 13, preventing damage to the ankle joint due to excessive rotation.

[0040] Limitation Measure Two: such as Figure 5 As shown, indicator plates 14 are provided on both sides of the training plate 4. The indicator plates 14 and the fixed plates 8 are arranged side by side, and the distance between the two indicator plates 14 is greater than the distance between the two fixed plates 8. There is a gap between the indicator plates 14 and the fixed plates 8. An arc-shaped limiting groove 15 is provided on the indicator plate 14, and an swing scale 16 is provided on the indicator plate 14 at the edge of the limiting groove 15.

[0041] A swing plate 17 controlled by the foot pedal 6 is connected to the indicator plate 14. The swing plate 17 swings up and down with the foot pedal 6. Specifically, the end of the swing shaft 52 passes through the indicator plate 14 and is connected and fixed to the swing plate 17. The swing plate 17 is cam-shaped, and a swing rod 18 is provided at one end of the swing plate 17. The swing rod 18 slides in the limiting groove 15.

[0042] Therefore, during ankle dorsiflexion and plantarflexion exercises, the swing of the foot pedal 6 will eventually cause the swing rod 18 to move within the limiting groove 15. Even if the motor 2 5 fails unexpectedly, the foot pedal 6 will not swing over a large range due to the limitation of the limiting groove 15, thus preventing damage to the ankle joint due to excessive swing. Example

[0043] This embodiment is basically the same as Embodiment 1, and the similarities will not be repeated. The differences are as follows: Figure 6 As shown, the training frame also includes a mounting bracket 19, which has an "I"-shaped cross-section. The mounting bracket 19 is horizontally fixed at the foot of the medical bed, and the fixing bracket 1 is rotatably mounted on the mounting bracket 19. That is, the fixing bracket 1 is connected to the medical bed through the mounting bracket 19, and the fixing bracket 1 can rotate relative to the mounting bracket 19.

[0044] Here, the fixed bracket 1 is perpendicular or parallel to the mounting bracket 19, thus limiting the rotation angle of the fixed bracket 1 to 0° or 90°, providing two installation postures for the fixed bracket 1. One is that the fixed bracket 1 and the mounting bracket 19 are arranged in a straight line, in which case the fixed bracket 1 is in a horizontal state; the other is that the fixed bracket 1 is perpendicular to the mounting bracket 19, in which case the fixed bracket 1 is in a vertical state.

[0045] In this embodiment, the plate frame 101 of the fixed bracket 1 is connected to the mounting bracket 19 via a hinge pin 20, enabling the fixed bracket 1 to rotate. Meanwhile, each side of the mounting bracket 19 is provided with a horizontal bolt 21 and a vertical bolt 22. When the fixed bracket 1 is in a horizontal state, turning the horizontal bolt 21 causes it to insert into the plate frame 101, thereby fixing the fixed bracket 1 and preventing it from rotating; when the fixed bracket 1 is in a vertical state, turning the vertical bolt 22 causes it to insert into the plate frame 101, thereby fixing the fixed bracket 1 and preventing it from rotating.

[0046] It should be noted that when the fixation bracket 1 is in a vertical position, ankle joint internal rotation, external rotation, dorsiflexion, and plantar flexion exercises can be performed. Importantly, when the fixation bracket 1 is in a horizontal position, motor 25 is first controlled to move the foot pedal 6, causing it to swing and become perpendicular to the training disc 4. After the patient places both feet on the foot pedal 6, motor 3 is controlled to reciprocate, thereby causing the foot to invert and evert, essentially swinging the foot around the training disc 4, thus providing multi-angle ankle joint exercise.

[0047] 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 multi-angle ankle joint range of motion training frame, characterized in that, It includes a fixed support (1) and training units (2) symmetrically arranged on both sides of the fixed support (1). The training unit (2) includes a motor (3), a training plate (4) controlled by the motor (3), a motor (5), and a foot pedal (6) controlled by the motor (5). The training disc (4) is rotatably mounted on the outside of the fixed bracket (1), and the motor (3) for controlling the circumferential rotation of the training disc (4) is mounted inside the fixed bracket (1). The training disc (4) is provided with fixed plates (8) on both sides, and a foot pedal (6) is rotatably provided between the two fixed plates (8). There is a gap between the foot pedal (6) and the training disc (4). The second motor (5) for controlling the pitch swing of the foot pedal (6) is provided on the training disc (4) between the two fixed plates (8).

2. The multi-angle ankle joint range of motion training bracket according to claim 1, characterized in that, The fixed bracket (1) includes a plate frame (101) and a fixed shell (102). The plate frame (101) and the fixed shell (102) are connected and fixed. The motor (3) is installed inside the fixed shell (102). The motor (3) is a flat stepper motor.

3. The multi-angle ankle joint range of motion training bracket according to claim 2, characterized in that, The training disc (4) has a "T" shaped cross section. The middle part of the training disc (4) passes through the fixed shell (102) and is inserted into the motor (3). The middle part of the training disc (4) is connected and fixed to the rotor of the motor (3). A planar bearing (7) is also provided between the training disc (4) and the fixed shell (102).

4. The multi-angle ankle joint range of motion training bracket according to claim 1, characterized in that, The foot pedal (6) is provided with a strap (10), and rotating plates (9) are provided on both sides below the foot pedal (6). The rotating plates (9) and the fixed plates (8) correspond one to one. The second motor (5) includes a hollow shaft stepper motor (51) and a swing shaft (52) fixedly inserted inside the hollow shaft stepper motor (51), with both ends of the swing shaft (52) extending out of the hollow shaft stepper motor (51).

5. The multi-angle ankle joint range of motion training bracket according to claim 4, characterized in that, The swing shaft (52) has prism segments at both ends. The prism segments pass through the rotating plate (9) and cooperate with the rotating plate (9) to drive the rotating plate (9) to rotate. The end of the swing shaft (52) passes through the fixed plate (8) and is rotatably connected to the fixed plate (8).

6. The multi-angle ankle joint range of motion training bracket according to claim 1, characterized in that, The training disc (4) has an indicator block (11) on its edge, and a rotation scale (12) is provided on the fixed bracket (1) at the edge of the training disc (4). The indicator block (11) swings within the range of the rotation scale (12). Two limiting rods (13) are provided on the fixed bracket (1) at the edge of the training disc (4), and the indicator block (11) swings between the two limiting rods (13).

7. The multi-angle ankle joint range of motion training bracket according to claim 1, characterized in that, The training plate (4) is provided with indicator plates (14) on both sides. The indicator plates (14) and the fixed plate (8) are arranged side by side. An arc-shaped limiting groove (15) is provided on the indicator plate (14). A swing scale (16) is provided on the indicator plate (14) at the edge of the limiting groove (15). The indicator plate (14) is connected to a swing plate (17) controlled by the foot pedal (6). One end of the swing plate (17) is provided with a swing rod (18), which slides in the limiting groove (15).

8. The multi-angle ankle joint range of motion training bracket according to claim 1, characterized in that, It also includes a mounting bracket (19), the mounting bracket (19) has an "I" shaped cross section, and the fixed bracket (1) is rotatably mounted on the mounting bracket (19), the fixed bracket (1) being perpendicular or parallel to the mounting bracket (19).

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