Passive ankle rehabilitation training device

Abstract

The application discloses passive ankle rehabilitation training equipment, which comprises an equipment main body, a driving mechanism and a two-foot supporting mechanism. The equipment main body comprises an equipment frame body and a supporting piece, the supporting piece is installed on the equipment frame body, and the supporting piece is located in front of a patient. The driving mechanism comprises a driving rotating part, a transmission assembly and a transmission shaft, the driving rotating part is installed on the supporting piece, the driving rotating part is provided with an output shaft, the transmission assembly comprises a driving piece and a driven piece, the driving piece is sleeved on the output shaft, the driven piece is sleeved on the transmission shaft, the transmission shaft is provided with two insertion end portions, the two insertion end portions of the transmission shaft respectively extend to left and right sides of the supporting piece, the outer periphery of the driving piece forms a belt rotating structure, the outer periphery of the driven piece forms a driven structure, and the driving piece is assembled with the driven piece in a meshing mode of the belt rotating structure and the driven structure. One foot supporting mechanism is installed on one insertion end portion, the driving rotating part drives the transmission shaft to rotate through the transmission assembly, and the transmission shaft drives the foot supporting mechanism to rotate.

Description

Technical Field

[0001] This application relates to the field of lower limb rehabilitation training equipment technology, and more particularly to passive ankle joint rehabilitation training equipment. Background Technology

[0002] The ankle joint is an important joint connecting the lower leg and foot, formed by the lower ends of the tibia and fibula, and the talus. For patients with ankle injuries, ankle rehabilitation training equipment is needed to perform plantar flexion and dorsiflexion exercises to enhance proprioception and limb reflexes, prevent muscle atrophy, and thus improve ankle range of motion.

[0003] Existing passive ankle joint training devices typically have two sets of drive components, each connected to a foot support mechanism. These drive components rotate the foot support mechanisms to train the patient's ankle joints. However, having two sets of drive components increases the cost and size of the passive ankle joint training device, resulting in a larger footprint and making it difficult to arrange and transport. Utility Model Content

[0004] To address the aforementioned technical problems and achieve at least one advantage of this application, this application provides a passive ankle joint rehabilitation training device, the passive ankle joint rehabilitation training device comprising:

[0005] The main body of the device includes a device frame and a support component, the support component being installed on the device frame and positioned in front of the patient;

[0006] A drive mechanism includes a drive component, a transmission assembly, and a transmission shaft. The drive component is mounted on the support member and has an output shaft. The axial direction of the transmission shaft is perpendicular to the axial direction of the output shaft. The transmission assembly includes a driving component and a driven component. The driving component is sleeved on the output shaft. The driven component is sleeved on the transmission shaft. The transmission shaft has two insertion ends that extend to the left and right sides of the support member, respectively. The outer periphery of the driving component forms a rotating structure, and the outer periphery of the driven component forms a driven structure. The driving component is assembled with the driven component in a meshing manner with the rotating structure and the driven structure.

[0007] Two foot support mechanisms are provided, one of which is mounted on a plug-in end. The drive component drives the drive shaft to rotate via the transmission assembly, and the drive shaft drives the foot support mechanism to rotate.

[0008] According to one embodiment of this application, the passive ankle joint rehabilitation training device further includes a leg support mechanism. The leg support mechanism includes an installation component, two leg support bodies, and two connecting components. The installation component is installed at the end of the support component near the patient. The two connecting components are fixedly connected to the end of the installation component away from the support component. The two leg support bodies are respectively connected to the ends of the two connecting components away from the installation component. The two leg support bodies are respectively located on the left and right sides of the installation component, and the two leg support bodies respectively support the patient's left and right lower legs.

[0009] According to one embodiment of this application, the mounting member is rotatably mounted on the support member about the axial direction of the transmission shaft. The leg support mechanism further includes an angle monitoring member mounted on the support member for detecting the rotation angle of the mounting member relative to the support member. The passive ankle joint rehabilitation training device further includes a controller. The angle monitoring member is communicatively connected to the controller. The angle monitoring member detects the rotation angle of the mounting member and transmits it to the controller. The drive component is controllably connected to the controller. The controller controls the drive component to drive the foot support mechanism to rotate according to the rotation angle of the mounting member, so that the patient's ankle joint is always kept in a zero-degree position.

[0010] According to one embodiment of this application, the leg support mechanism further includes a locking component, which includes an angle fixing member, an anti-rotation pin, a shifting assembly, an arc-shaped rack, and an elastic element. The arc-shaped rack is fixedly mounted on the support member and is coaxially arranged with the drive shaft. The mounting member forms an assembly space and an oblong hole connecting the assembly space to the outside. The anti-rotation pin passes through the assembly space and can engage and disengage with the arc-shaped rack in a plane direction perpendicular to the axial direction of the drive shaft. The shifting assembly includes a cam and a shifting element. The end of the anti-rotation pin opposite to the arc-shaped rack is rotatably connected to the shifting element. The shifting element is located on the mounting member. The outer periphery of the component extends partially from the waist-shaped hole into the assembly space. The cam is located in the assembly space and connected to the portion of the rotating component that extends into the assembly space. The rotating component can drive the cam to rotate synchronously. The two opposing inner walls formed by the assembly space abut against one end of the elastic component and the wheel surface of the cam, respectively. The elastic component is sleeved on the anti-rotation pin in a compressed state and abuts against the wheel surface of the cam. When the end of the cam wheel surface that is at its maximum distance from its own axis abuts against the inner wall of the assembly space, the anti-rotation pin engages with the arc-shaped rack. When the end of the cam wheel surface that is at its maximum distance from its own axis deviates from the inner wall of the assembly space, the anti-rotation pin separates from the arc-shaped rack.

[0011] According to one embodiment of this application, the leg support mechanism further includes a rotating shaft, the leg support body is connected to the rotating shaft, and the rotating shaft is mounted on one end of the connector away from the mounting member. The leg support body rotates axially about the rotating shaft to approach or move away from the posterior side of the patient's lower leg. The locking component includes a locking member, the connector forms a threaded hole, the leg support body forms a locking hole aligned with the threaded hole, the extension direction of the locking hole is perpendicular to the axial direction of the rotating shaft, the locking member is threadedly mounted on the threaded hole and is partially extendable into and withdrawable from the locking hole.

[0012] According to one embodiment of this application, each foot support mechanism includes a foot support body and at least one assembly component. The foot support body supports the patient's foot, the assembly component is installed on the side of the foot support body, the plug-in end is connected to the assembly component, and the drive shaft drives the foot support body to rotate through the assembly component.

[0013] According to one embodiment of this application, the foot support mechanism is detachably mounted to the insertion end. The assembly component includes an assembly body and a locking member. The assembly body is mounted on the side of the foot support body and detachably mounted to the insertion end. The assembly body includes a fixing part and an elastic part. The fixing part is fixedly mounted to the foot support body. One end of the fixing part is bent and extended to form the elastic part. The fixing part and the elastic part together form an assembly hole and an adjustment groove communicating between the assembly hole and the outside. The insertion end is inserted into the assembly hole, and the elastic part is capable of elastic deformation. The locking member includes a crank and a... A connecting rod passes through the elastic part and the fixed part to form the adjusting groove, and a crank is rotatably connected to one end of the connecting rod extending out of the elastic part. The end of the crank near the connecting rod partially compresses the elastic part. When the end of the crank away from the connecting rod rotates towards the elastic part, the crank compresses the portion of the elastic part forming the adjusting groove, and the elastic part moves in a direction that narrows the mounting hole. When the end of the crank away from the connecting rod rotates away from the elastic part, the elastic part moves in a direction that widens the mounting hole under the action of elastic restoring force.

[0014] According to one embodiment of this application, the shape of the mounting hole is non-circular, and the cross-sectional shape of the insertion end along its own radial direction is adapted to the shape of the mounting hole.

[0015] According to one embodiment of this application, the locking member includes a locking member, which is installed on a side wall of the crank that is opposite to the elastic part. The elastic part forms a through hole communicating with the assembly hole and the outside. The insertion end forms a limiting hole in its own radial direction. The insertion end is inserted into the assembly hole with the limiting hole aligned with the through hole. When the end of the crank away from the connecting rod rotates toward the elastic part, the locking member extends from the through hole into the limiting hole.

[0016] According to one embodiment of this application, the support member is pivotally mounted on the device frame, the device body further includes a height adjustment component, the height adjustment component is mounted on the device frame, and the end of the support member away from the patient is connected to the height adjustment component, the height adjustment component being capable of applying downward pressure and pulling upward on the end of the support member away from the patient. Attached Figure Description

[0017] Figure 1 A schematic diagram of a scenario in which the passive ankle joint rehabilitation training device described in this application is displayed.

[0018] Figure 2 A schematic diagram of another state of the passive ankle rehabilitation training device described in this application is shown.

[0019] Figure 3 A partial structural diagram of the passive ankle joint rehabilitation training device described in this application is shown.

[0020] Figure 4 It shows Figure 3 A schematic diagram of the structure of part A.

[0021] Figure 5 A schematic diagram of another part of the passive ankle rehabilitation training device described in this application is shown.

[0022] Figure 6 It shows Figure 5 A schematic diagram of the structure of part B.

[0023] Figure 7 A schematic diagram of the foot support mechanism described in this application in one state is shown.

[0024] Figure 8 A cross-sectional view of the foot support mechanism described in this application is shown in another state.

[0025] Figure 9 A schematic diagram of the passive ankle joint rehabilitation training device described in this application is shown in one state.

[0026] Figure 10A cross-sectional view of another portion of the passive ankle rehabilitation training device described in this application is shown.

[0027] Figure 11 A cross-sectional view of another portion of the passive ankle rehabilitation training device described in this application is shown in another state. Detailed Implementation

[0028] The following description is intended to disclose this application and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of this application defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of this application.

[0029] Those skilled in the art should understand that, in the disclosure of this application, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this application.

[0030] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0031] refer to Figures 1 to 11 A preferred embodiment of the passive ankle rehabilitation training device according to this application will be described in detail below.

[0032] refer to Figures 1 to 6 The passive ankle joint rehabilitation training device includes a main body 10, a drive mechanism 20, and at least one foot support mechanism 30.

[0033] The drive mechanism 20 is installed on the main body 10 of the device, and the foot support mechanism 30 is used to support the patient's foot. The foot support mechanism 30 is connected to the drive mechanism 20, and the drive mechanism 20 drives the foot support mechanism 30 to rotate, so that the foot support mechanism 30 drives the patient's foot to rotate synchronously, causing the foot to plantarflex or dorsiflex, thereby simulating the movement of the human ankle joint and training the patient's ankle joint.

[0034] The main body 10 of the device includes a device frame 11 and a support member 12. The support member 12 is mounted on the device frame 11, and the drive mechanism 20 is mounted on the support member 12. The support member 12 is located in front of the patient, and the foot support mechanism 30 is located to the side of the support member 12 and close to one end of the patient.

[0035] refer to Figure 3 Preferably, the support member 12 is pivotally mounted on the device frame 11, such that the height of the support member 12 near the patient end can be adjusted.

[0036] Preferably, the main body 10 of the device further includes a height adjustment component 13, which is installed on the device frame 11, and the end of the support member 12 away from the patient is connected to the height adjustment component 13. The height adjustment component 13 can apply downward pressure and pull upward on the end of the support member 12 away from the patient, so that the support member 12 rotates relative to the device frame 11, thereby adjusting the height of the end of the support member 12 closer to the patient.

[0037] On the one hand, the training companion can adjust the height of the support member 12 near the patient according to the patient's height and the training location, thereby adjusting the foot support mechanism 30 to a height suitable for the patient's foot. In other words, the passive ankle rehabilitation training device can be used with chairs, wheelchairs, hospital beds, and other equipment used by the patient. On the other hand, when the height adjustment component 13 lifts the end of the support member 12 near the patient, the height of the foot support mechanism 30 gradually increases, causing the patient's foot to be gradually raised. Figure 1 and Figure 2 As shown, in this way, the patient's leg gradually changes from a flexed knee position to an extended knee position, allowing the patient to perform ankle joint rehabilitation training in different postures to meet training needs of different intensities.

[0038] As an example, the height adjustment component 13 is implemented to include a cylinder.

[0039] In another embodiment, the support member 12 is fixedly installed on the device frame 11. In this case, the device body 10 may not be equipped with the height adjustment component 13, thereby simplifying the passive ankle joint rehabilitation training device.

[0040] refer to Figures 3 to 6Specifically, the driving mechanism 20 includes a driving component 21, a transmission assembly 22, and a transmission shaft 23. The driving component 21 is mounted on the support member 12. The driving component 21 has an output shaft 211, and the transmission assembly 22 is connected to the output shaft 211. The transmission shaft 23 is mounted on the transmission assembly 22, wherein the axial direction of the transmission shaft 23 is perpendicular to the axial direction of the output shaft 211. The transmission shaft 23 has two insertion ends 231, which extend to the left and right sides of the support member 12, respectively. A foot support mechanism 30 is mounted on one of the insertion ends 231. The driving force output by the driving component 21 is transmitted from the transmission assembly 22 to the transmission shaft 23, causing the driving component 21 to drive the foot support mechanism 30 to rotate via the transmission assembly 22 and the transmission shaft 23.

[0041] Preferably, the transmission assembly 22 includes a driving member 221 and a driven member 222. The driving member 221 is sleeved on the output shaft 211; the driven member 222 is sleeved on the transmission shaft 23. The outer periphery of the driving member 221 forms a rotating structure, and the outer periphery of the driven member 222 forms a driven structure. The driving member 221 is assembled with the driven member 222 in a meshing manner with the rotating structure and the driven structure. When the driving member 221 rotates, the driven member 222 drives the transmission shaft 23 to rotate, thereby causing the foot support mechanism 30 to rotate.

[0042] In one embodiment, both the driving member 221 and the driven member 222 are implemented as bevel gears, and both the rotating structure and the driven structure are implemented as meshing teeth.

[0043] In another embodiment, either the driving member 221 or the driven member 222 is implemented as a worm gear, and the other is implemented as a worm.

[0044] Preferably, the drive component 21 includes a drive motor 212 and a reducer 213, with the drive motor 212 mounted on the support member 12. The reducer 213 is connected to the drive motor 212, and the output shaft 211 is connected to the reducer 213. The reducer 213 reduces the rotational speed generated by the drive motor 212 and outputs it to the drive member 221, thereby increasing the torque of the foot support mechanism 30 and reducing the rotational speed of the foot support mechanism 30.

[0045] In a preferred embodiment, the support member 12 forms a hidden space 1201, and the drive component 21 and the transmission assembly 22 are both installed in the hidden space 1201 to improve the aesthetics of the passive ankle joint rehabilitation training device.

[0046] Preferably, each foot support mechanism 30 includes a foot support body 31 and at least one mounting component 32. The foot support body 31 supports the patient's foot. The mounting component 32 is mounted on the side of the foot support body 31, and the insertion end 231 is connected to the mounting component 32, such that the drive shaft 23 drives the foot support body 31 to rotate through the mounting component 32.

[0047] refer to Figure 5 In one embodiment, the passive ankle rehabilitation training device includes two spaced-apart foot support mechanisms 30. The assembly components 32 of each foot support mechanism 30 are respectively connected to the two insertion ends 231 of the drive shaft 23, allowing the patient's lower limbs to be trained simultaneously. The two foot support mechanisms 30 share the same drive mechanism 20, thereby reducing the cost of the passive ankle rehabilitation training device.

[0048] Preferably, the foot support mechanism 30 is detachably mounted to the insertion end 231. The assembly component 32 includes an assembly body 321 and a locking member 322. The assembly body 321 is mounted on the side of the foot support body 31 and is detachably mounted to the insertion end 231. The locking member 322 is locked between the assembly body 321 and the insertion end 231 in an unlockable manner, for assembling the assembly body 321 and the insertion end 231.

[0049] refer to Figure 7 and Figure 8 In one embodiment, the assembly body 321 includes a fixing portion 3211 and an elastic portion 3212, wherein the fixing portion 3211 is fixedly mounted to the footrest body 31. One end of the fixing portion 3211 is bent and extended to form the elastic portion 3212, and the fixing portion 3211 and the elastic portion 3212 together form an assembly hole 32101 and an adjustment groove 32102 communicating the assembly hole 32101 with the outside. The insertion end 231 is inserted into the assembly hole 32101. The elastic portion 3212 is capable of elastic deformation, causing the elastic portion 3212 to grip or release the insertion end 231. The locking member 322 includes a crank 3221 and a connecting rod 3222. The connecting rod 3222 passes through the elastic portion 3212 and the fixing portion 3211 to form the adjusting groove 32102, and the crank 3221 is rotatably connected to one end of the connecting rod 3222 that extends out of the elastic portion 3212. The end of the crank 3221 near the connecting rod 3222 partially presses against the elastic portion 3212.

[0050] When the end of the crank 3221 away from the connecting rod 3222 rotates towards the elastic part 3212, the crank 3221 presses against the portion of the elastic part 3212 that forms the adjusting groove 32102, causing the elastic part 3212 to move in a direction that narrows the mounting hole 32101. Consequently, the insertion end 231 is fixed within the mounting hole 32101 by the elastic part 3212 and the fixing part 3211. When the end of the crank 3221 away from the connecting rod 3222 rotates away from the elastic part 3212, the elastic part 3212 moves in a direction that widens the mounting hole 32101 under the action of elastic restoring force. At this time, the insertion end 231 can be separated from the foot support mechanism 30.

[0051] Preferably, the mounting hole 32101 is non-circular in shape; that is, the shape of the mounting hole 32101 can be any shape such as polygonal, elliptical, or oblong, and the cross-sectional shape of the insertion end 231 along its radial direction is adapted to the shape of the mounting hole 32101. The cooperation between the wall of the mounting hole 32101 and the insertion end 231 ensures that the drive shaft 23 drives the foot support mechanism 30 to rotate synchronously.

[0052] Furthermore, the locking member 322 includes a locking member 3223, which is mounted on a side wall of the crank 3221 that is opposite to the elastic part 3212. The elastic part 3212 forms a through hole 32103 communicating with the mounting hole 32101 and the outside. The insertion end 231 forms a limiting hole 23101 in its radial direction, and the insertion end 231 is inserted into the mounting hole 32101 with the limiting hole 23101 aligned with the through hole 32103. When the end of the crank 3221 away from the connecting rod 3222 rotates toward the elastic part 3212, the locking member 3223 extends from the through hole 32103 into the limiting hole 23101 to prevent the foot support mechanism 30 from moving relative to the drive shaft 23 in the axial and circumferential directions along the drive shaft 23, thereby further improving the firmness of the foot support mechanism 30 and the drive shaft 23 after assembly and ensuring the synchronicity of the movement of the drive shaft 23 and the foot support mechanism 30.

[0053] Preferably, each foot support mechanism 30 is provided with two assembly components 32, which are respectively installed on the left and right sides of the foot support body 31. The two assembly components 32 located on the left and right sides of a foot support body 31 can be sequentially assembled with the two insertion ends 231 of the drive shaft 23. Since the foot support mechanism 30 and the drive shaft 23 can be quickly disassembled and assembled, the training companion can selectively install a foot support mechanism 30 on the corresponding insertion end 231 according to the patient's training needs.

[0054] Furthermore, the foot support body 31 includes a rigid support member 311, and the fixing part 3211 is installed on the outer side wall of the rigid support member 311. The rigid support member 311 provides rigid support for the patient's foot from the sole, the left and right sides of the foot and the heel direction.

[0055] Preferably, the foot support body 31 further includes a flexible cushioning member 312, which is installed on the inner wall of the rigid support member 311 to improve the comfort of the foot support body 31.

[0056] Furthermore, the foot support body 31 also includes a restraint member 313, which is installed on the rigid support member 311 to fix the foot to the rigid support member 311, reduce the movement of the patient's foot within the foot support body 31, and avoid causing secondary injury to the patient during use.

[0057] As an example, the constraint 313 is implemented as a strap.

[0058] refer to Figure 5 and Figure 9 Furthermore, the passive ankle joint rehabilitation training device also includes a leg support mechanism 40.

[0059] The leg support mechanism 40 includes a mounting member 41, at least one leg support body 42, and at least one connector 43. The mounting member 41 is mounted on the end of the support member 12 near the patient, the connector 43 is connected to the end of the mounting member 41 away from the support member 12, and the leg support body 42 is mounted on the end of the connector 43 away from the mounting member 41. The leg support body 42 is used to support the patient's lower leg to assist the patient during training.

[0060] In one embodiment, the leg support mechanism 40 includes a leg support body 42 and a connector 43. The connector 43 is pivotally connected to one end of the mounting member 41 away from the support member 12, and the end of the connector 43 away from the mounting member 41 can be rotated to the left or right side of the mounting member 41, so that the leg support body 42 can support the patient's left or right calf.

[0061] In another embodiment, the leg support mechanism 40 includes two leg support bodies 42 and two connecting members 43. The two connecting members 43 are fixedly connected to one end of the mounting member 41 away from the support member 12, and the two leg support bodies 42 are respectively connected to one end of the two connecting members 43 away from the mounting member 41. The two leg support bodies 42 are respectively located on the left and right sides of the mounting member 41, so that the two leg support bodies 42 respectively support the left and right lower legs of the patient.

[0062] Preferably, the leg support mechanism 40 further includes a rotating shaft 44, to which the leg support body 42 is connected, and the rotating shaft 44 is mounted on the end of the connector 43 away from the mounting member 41. The leg support body 42 rotates axially about the rotating shaft 44 to move closer to or further away from the back of the patient's lower leg. It is understood that when the patient puts on or takes off the foot support body 31, the leg support body 42 is located to the side of the patient's lower leg, so that the patient can easily put on or take off the foot support body 31 without raising their leg. After the patient's foot is fully fitted with the foot support body 31, the end of the leg support body 42 away from the connector 43 rotates upwards and moves closer to the back of the patient's lower leg to support the lower leg.

[0063] In one embodiment, the leg support mechanism 40 further includes a locking component 45, which includes a locking member 451. The connector 43 forms a threaded hole, and the leg support body 42 forms a locking hole aligned with the threaded hole. The extension direction of the locking hole is perpendicular to the axial direction of the rotation shaft 44. The locking member 451 is threaded into the threaded hole and is partially extendable into and withdrawable from the locking hole. Specifically, when the locking member 451 moves toward the threaded hole and partially extends into the locking hole, the locking member 451 and the connector 43 cooperate to fix the leg support body 42 radially on the rotation shaft 44. When the locking member 451 moves toward the threaded hole and withdraws from the locking hole, the leg support body 42 can rotate relative to the connector 43.

[0064] As an example, the locking element 451 is implemented as a bolt.

[0065] Preferably, the mounting member 41 is rotatably mounted on the support member 12 about the axis of the drive shaft 23 to adjust the position of the leg support body 42 so that the patient can perform ankle joint training at different knee flexion levels.

[0066] refer to Figure 10 and Figure 11The locking component 45 further includes an angle fixing member 452, which includes an anti-rotation pin 4521, a belt shifting assembly 4522, an arc-shaped rack 4523, and an elastic element 4524. The arc-shaped rack 4523 is fixedly mounted on the support member 12 and is coaxially arranged with the drive shaft 23. The mounting member 41 forms an assembly space 4101 and an oblong hole 4102 connecting the assembly space 4101 to the outside. The anti-rotation pin 4521 is inserted into the assembly space 4101 and can engage and disengage with the arc-shaped rack 4523 in a plane direction perpendicular to the axial direction of the drive shaft 23. The belt shifting assembly 4522 includes a cam 45221 and a belt shifting element 45222, and the end of the anti-rotation pin 4521 facing away from the arc-shaped rack 4523 is rotatably connected to the belt shifting element 45222. The rotating component 45222 is located on the outer periphery of the mounting component 41 and extends partially from the waist-shaped hole 4102 into the assembly space 4101. The cam 45221 is located in the assembly space 4101 and connected to the portion of the rotating component 45222 extending into the assembly space 4101. The rotating component 45222 can drive the cam 45221 to rotate synchronously. The two opposing inner walls formed by the assembly space 4101 abut against one end of the elastic member 4524 and the wheel surface of the cam 45221, respectively. The elastic member 4524 is sleeved on the anti-rotation pin 4521 in a compressed state and abuts against the wheel surface of the cam 45221.

[0067] Specifically, when the end of the cam 45221 at its maximum distance from its axis abuts against the inner wall of the assembly space 4101, the anti-rotation pin 4521 engages with the arc-shaped rack 4523, and the anti-rotation pin 4521 and the arc-shaped rack 4523 cooperate to lock the mounting member 41. When the rotating member 45222 drives the cam 45221 to rotate so that the end of the cam 45221 at its maximum distance from its axis deviates from the inner wall of the assembly space 4101, the cam 45221, the anti-rotation pin 4521, and the rotating member 45222 move along the waist-shaped hole 4102 away from the arc-shaped rack 4523 under the elastic force of the elastic member 4524, so that the anti-rotation pin 4521 separates from the arc-shaped rack 4523, and at this time the mounting member 41 can rotate relative to the support member 12.

[0068] refer to Figure 6 Furthermore, the leg support mechanism 40 also includes an angle monitoring element 46, which is installed on the support member 12 and is used to detect the rotation angle of the mounting member 41 relative to the support member 12.

[0069] The passive ankle joint rehabilitation training device also includes a controller. The angle monitoring component 46 is communicatively connected to the controller, and the angle monitoring component 46 detects the rotation angle of the mounting component 41 and transmits it to the controller. The drive component 21 is controllably connected to the controller, and the controller controls the operation of the drive component 21 according to the rotation angle of the mounting component 41, so that the drive mechanism 20 drives the foot support mechanism 30 to rotate, thereby compensating for the angle difference between the patient's leg and foot due to changes in leg position. This ensures that the patient's ankle joint remains at a zero-degree position at any degree of knee flexion, avoiding errors caused by manually adjusting the foot support mechanism 30, and ensuring that the patient's ankle joint starts a round of training at a zero-degree position, preventing secondary injury to the patient's ankle joint.

[0070] As an example, the angle monitoring element 46 is implemented as an angle sensor.

[0071] Furthermore, the passive ankle joint rehabilitation training device also includes an interactive display 50, which is mounted on the device frame 11 to facilitate patient viewing and interaction.

[0072] Those skilled in the art should understand that the embodiments of this application described above and shown in the accompanying drawings are merely examples and do not limit the scope of this application. The advantages of this application have been fully and effectively implemented. The functional and structural principles of this application have been demonstrated and explained in the embodiments, and any variations or modifications can be made to the implementation of this application without departing from the stated principles.

Claims

1. A passive ankle joint rehabilitation training device, characterized in that, The passive ankle joint rehabilitation training device includes: The main body of the device includes a device frame and a support component, the support component being installed on the device frame and positioned in front of the patient; A drive mechanism includes a drive component, a transmission assembly, and a transmission shaft. The drive component is mounted on the support member and has an output shaft. The axial direction of the transmission shaft is perpendicular to the axial direction of the output shaft. The transmission assembly includes a driving component and a driven component. The driving component is sleeved on the output shaft. The driven component is sleeved on the transmission shaft. The transmission shaft has two insertion ends that extend to the left and right sides of the support member, respectively. The outer periphery of the driving component forms a rotating structure, and the outer periphery of the driven component forms a driven structure. The driving component is assembled with the driven component in a meshing manner with the rotating structure and the driven structure. Two foot support mechanisms are provided, one of which is mounted on a plug-in end. The drive component drives the drive shaft to rotate via the transmission assembly, and the drive shaft drives the foot support mechanism to rotate.

2. The passive ankle joint rehabilitation training device according to claim 1, characterized in that, The passive ankle joint rehabilitation training device also includes a leg support mechanism, which includes an installation component, two leg support bodies, and two connecting components. The installation component is installed at the end of the support component near the patient. The two connecting components are fixedly connected to the end of the installation component away from the support component. The two leg support bodies are respectively connected to the ends of the two connecting components away from the installation component. The two leg support bodies are located on the left and right sides of the installation component, and the two leg support bodies respectively support the patient's left and right lower legs.

3. The passive ankle joint rehabilitation training device according to claim 2, characterized in that, The mounting component is rotatably mounted on the support component about the axis of the drive shaft. The leg support mechanism also includes an angle monitoring component mounted on the support component for detecting the rotation angle of the mounting component relative to the support component. The passive ankle joint rehabilitation training device also includes a controller. The angle monitoring component is communicatively connected to the controller. The angle monitoring component detects the rotation angle of the mounting component and transmits it to the controller. The drive component is controllably connected to the controller. The controller controls the drive component to drive the foot support mechanism to rotate according to the rotation angle of the mounting component, so that the patient's ankle joint is always kept in a zero-degree position.

4. The passive ankle joint rehabilitation training device according to claim 3, characterized in that, The leg support mechanism further includes a locking component, which comprises an angle fixing member, an anti-rotation pin, a belt shifting assembly, an arc-shaped rack, and an elastic element. The arc-shaped rack is fixedly mounted on the support member and is coaxially arranged with the drive shaft. The mounting member forms an assembly space and an oblong hole connecting the assembly space to the outside. The anti-rotation pin passes through the assembly space and can engage and disengage with the arc-shaped rack in a plane direction perpendicular to the axial direction of the drive shaft. The belt shifting assembly includes a cam and a belt rotating member. The end of the anti-rotation pin opposite to the arc-shaped rack is rotatably connected to the belt rotating member. The belt rotating member is located on the outer periphery of the mounting member. The cam extends from the waist-shaped hole into the assembly space. The cam is located in the assembly space and connected to the part of the rotating component that extends into the assembly space. The rotating component can drive the cam to rotate synchronously. The two opposing inner walls formed by the assembly space abut against one end of the elastic element and the wheel surface of the cam, respectively. The elastic element is sleeved on the anti-rotation pin in a compressed state and abuts against the wheel surface of the cam. When the end of the wheel surface of the cam that is at its maximum distance from its own axis abuts against the inner wall of the assembly space, the anti-rotation pin engages with the arc-shaped rack. When the end of the wheel surface of the cam that is at its maximum distance from its own axis deviates from the inner wall of the assembly space, the anti-rotation pin separates from the arc-shaped rack.

5. The passive ankle joint rehabilitation training device according to claim 4, characterized in that, The leg support mechanism further includes a rotating shaft, to which the leg support body is connected, and the rotating shaft is mounted on the end of the connector away from the mounting member. The leg support body rotates axially about the rotating shaft to move closer to or away from the posterior side of the patient's lower leg. The locking component includes a locking member, the connector forming a threaded hole, and the leg support body forming a locking hole aligned with the threaded hole. The extension direction of the locking hole is perpendicular to the axial direction of the rotating shaft. The locking member is threaded into the threaded hole and is partially extendable into and withdrawable from the locking hole.

6. The passive ankle joint rehabilitation training device according to claim 5, characterized in that, Each of the foot support mechanisms includes a foot support body and at least one assembly component. The foot support body supports the patient's foot, the assembly component is mounted on the side of the foot support body, the plug-in end is connected to the assembly component, and the drive shaft drives the foot support body to rotate through the assembly component.

7. The passive ankle joint rehabilitation training device according to claim 6, characterized in that, The foot support mechanism is detachably mounted to the insertion end. The assembly component includes an assembly body and a locking member. The assembly body is mounted on the side of the foot support body and detachably mounted to the insertion end. The assembly body includes a fixing part and an elastic part. The fixing part is fixedly mounted to the foot support body. One end of the fixing part is bent and extended to form the elastic part. The fixing part and the elastic part together form an assembly hole and an adjustment groove connecting the assembly hole to the outside. The insertion end is inserted into the assembly hole, and the elastic part can undergo elastic deformation. The locking member includes a crank and a connecting rod. The connecting rod passes through the elastic part and the fixed part to form the adjusting groove, and the crank is rotatably connected to the end of the connecting rod that extends out of the elastic part. The end of the crank near the connecting rod partially compresses the elastic part. When the end of the crank away from the connecting rod rotates towards the elastic part, the crank compresses the portion of the elastic part that forms the adjusting groove, and the elastic part moves in a direction that narrows the mounting hole. When the end of the crank away from the connecting rod rotates away from the elastic part, the elastic part moves in a direction that widens the mounting hole under the action of the elastic restoring force.

8. The passive ankle joint rehabilitation training device according to claim 7, characterized in that, The assembly hole is non-circular in shape, and the cross-sectional shape of the insertion end along its own radial direction is adapted to the shape of the assembly hole.

9. The passive ankle joint rehabilitation training device according to claim 8, characterized in that, The locking member includes a locking element, which is installed on a side wall of the crank that is opposite to the elastic part. The elastic part forms a through hole that connects the mounting hole and the outside. The insertion end forms a limiting hole in its own radial direction. The insertion end is inserted into the mounting hole with the limiting hole aligned with the through hole. When the end of the crank away from the connecting rod rotates toward the elastic part, the locking element extends from the through hole into the limiting hole.

10. The passive ankle joint rehabilitation training device according to claim 9, characterized in that, The support member is pivotally mounted on the device frame. The device body also includes a height adjustment component, which is mounted on the device frame. The end of the support member away from the patient is connected to the height adjustment component, which is capable of applying downward pressure and pulling upward on the end of the support member away from the patient.

Images