Walking aid for orthopedic rehabilitation

Abstract

The application relates to the technical field of orthopedic rehabilitation, in particular to a walking assisting device for orthopedic rehabilitation, which comprises a bottom plate, two groups of walking assemblies are symmetrically arranged at the lower end of the bottom plate, a lifting rod is vertically arranged above the bottom plate and connected with the bottom plate through a lifting assembly, the lifting rod is lifted under the drive of the lifting assembly; a supporting rod is horizontally fixedly arranged at the upper end of the lifting rod and perpendicular to the lifting rod, a first handrail is fixedly arranged on the supporting rod on the two sides of the lifting rod, a second handrail is slidably arranged on the supporting rod, the second handrail is connected with two first rotating shafts through brake assemblies; a locking assembly is connected with the second handrail; the application has the advantages of quick sliding of the second handrail for braking and improvement of the safety of walking training.

Description

Technical Field

[0001] This invention relates to the field of orthopedic rehabilitation technology, specifically to a walking aid device for orthopedic rehabilitation. Background Technology

[0002] Orthopedic rehabilitation is an important branch of rehabilitation medicine and an indispensable part of the overall treatment plan for various bone injuries and diseases. After surgery, orthopedic patients often spend a long period in bed recovering, and walking exercises are necessary during leg rehabilitation. Rehabilitation training plays a crucial role in the recovery of the patient's bodily functions, such as promoting blood circulation, preventing and delaying lower limb muscle atrophy, preventing foot drop, preventing pressure sores and osteoporosis, and strengthening the body and improving immunity. In the later stages of lower limb recovery, walking rehabilitation training is essential. Therefore, orthopedic rehabilitation walking aids, as important devices to assist patients in walking training, have a wide range of applications.

[0003] Existing walking aids have relatively simple structures and functions that are no longer sufficient to meet the needs of current patients. They are not convenient to use and have a limited scope of application. For example, existing walking aids either lack a braking mechanism or use omnidirectional wheels with foot brakes, requiring patients to bend over or use their feet to step on the brakes, which is extremely inconvenient and can easily cause secondary injuries. Summary of the Invention

[0004] In view of this, the present invention provides a walking aid device for orthopedic rehabilitation, which aims to solve the problems in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a walking aid device for orthopedic rehabilitation, comprising, The base plate has two sets of traveling components symmetrically arranged at its lower end. Each set of traveling components includes two casters symmetrically rotated on both sides of the lower end of the base plate. The two casters are respectively fixed to the two ends of the first rotating shaft horizontally arranged at the lower end of the base plate. The lifting rod is vertically installed above the base plate and connected to the base plate through a lifting assembly. The lifting rod rises and falls under the drive of the lifting assembly. A support rod is horizontally fixed to the upper end of the lifting rod and perpendicular to the lifting rod. A first handrail is fixed on the support rod on both sides of the lifting rod, and a second handrail is slidably mounted on it. The second handrail is connected to two first rotating shafts through a brake assembly. When the second handrail slides, it will move away from or closer to the first handrail. At the same time, the second handrail brakes or unlocks the two first rotating shafts through the brake assembly. The locking component is connected to the second handrail and locks the second handrail when it slides into place.

[0006] A further improvement of the present invention is that the braking assembly includes: The second rotating shaft is horizontally mounted at the lower end of the base plate and is perpendicular to the first rotating shaft. Two first bevel gears fixed at both ends of the second rotating shaft mesh with two second bevel gears on the two first rotating shafts respectively. The two first bevel gears are opposite to each other and the two second bevel gears are opposite to each other. The brake disc is fixed on the second rotating shaft; The first link has a brake plate at its first end, which is disposed opposite to the outer circumferential surface of the brake disc. The first link has a fixed shaft near its first end, which is connected to the fixed plate shaft fixed at the lower end of the base plate on one side of the first link. The second end of the first link is connected to the second handrail through a transmission assembly. The first torsion spring has its first end fixedly connected to the fixed plate and its second end fixedly connected to the fixed shaft.

[0007] A further improvement of the present invention is that the transmission assembly includes: The third rotating shaft is horizontally mounted on the lower end of the base plate, and its first end is eccentrically provided with a cam. The outer circumferential surface of the cam is in contact with the lower surface of the second end of the first connecting rod. A connecting shaft is vertically mounted on the base plate. Its lower end passes through the base plate and is fixed with a third bevel gear. The third bevel gear meshes with a fourth bevel gear fixed at the second end of the third rotating shaft. The upper end of the connecting shaft is connected to the second handrail through a connecting assembly.

[0008] A further improvement of the present invention is that the connecting component includes: A sliding sleeve is coaxially sleeved on the support rod and slidably connected thereto; the first side of the sliding sleeve is fixedly connected to the second handrail. A fixing box, the first side plate of which is fixedly connected to the second side of the sliding sleeve, and the lower surface of the fixing box is provided with a first elongated slot. A rotating sleeve is coaxially fitted onto the connecting shaft. The inner wall of the rotating sleeve is provided with a guide groove along its axial direction. The guide groove is slidably connected to the guide key on the connecting shaft. The rotating sleeve passes through the first long slot and extends into the fixed box, where a first gear is fixedly mounted. A first rack is horizontally fixed on the first side plate inside the fixed box. The first rack meshes with the first gear. Bosses are coaxially fixed on the rotating sleeve above and below the first long slot. The diameter of the bosses is greater than the width of the first long slot.

[0009] A further improvement of the present invention is that the locking component includes: The slide plate is vertically fixed on the sliding sleeve. A first through hole is provided on one side of the sliding sleeve. A first locking hole and a second locking hole are provided parallel to each other on the support rod below the first through hole. A locking shaft is positioned above the first through hole. A slider is fixed to the first side of the locking shaft, and the slider is slidably connected to a groove on the slide plate. When the sliding sleeve slides to the point where the first through hole is opposite to the first locking hole, the lower end of the locking shaft passes through the first through hole and inserts into or exits the first locking hole under the drive of the pressing component. When the sliding sleeve slides to the point where the first through hole is opposite to the second locking hole, the lower end of the locking shaft passes through the first through hole and inserts into or exits the second locking hole under the drive of the pressing component.

[0010] A further improvement of the present invention is that the pressing component includes: A hinge plate is fixed to the second handrail and close to the sliding sleeve; The second link has a sliding post fixed at its first end, which is slidably connected to a second long slot fixed on the second side of the locking shaft. A hinge shaft is fixed near the first end of the second link, which is connected to the hinge plate pivot. The second end of the second link is located above the grip of the second handrail. The second torsion spring has its first end fixedly connected to the hinge plate and its second end fixedly connected to the hinge shaft.

[0011] A further improvement of the present invention is that two baffles are fixed on the support rods on both sides of the fixing box, and a spring is provided between one of the baffles and the fixing box.

[0012] A further improvement of the present invention is that the lifting assembly includes: The lifting cylinder is fixed on the base plate and coaxially sleeved on the lifting rod; The screw is installed inside the lifting cylinder and is threadedly connected to and passes through the lifting rod. The screw rotates under the drive of the drive assembly.

[0013] A further improvement of the present invention is that the driving component includes: The fifth bevel gear is fixed on the screw. The fourth rotating shaft is horizontally mounted on the lifting cylinder. Its first end passes through the lifting cylinder and is fixed to the sixth bevel gear, which meshes with the fifth bevel gear. The second end of the fourth rotating shaft is fixed to the seventh bevel gear. The fifth rotating shaft is vertically mounted on the lifting cylinder, and the eighth bevel gear fixed at its lower end meshes with the seventh bevel gear. The ninth bevel gear is fixed at the upper end of the fifth rotating shaft. The handwheel is mounted on the lifting cylinder above the fifth rotating shaft, and the tenth bevel gear fixed on the handwheel meshes with the ninth bevel gear.

[0014] A further improvement of the present invention is that the groove is a dovetail groove, and the slider is adapted to it.

[0015] The technological advancements achieved by this invention due to the adoption of the above technical solutions are as follows: This invention provides a walking aid device for orthopedic rehabilitation. By sliding a second handrail on a support rod and connecting the second handrail to two first rotating shafts (i.e., the shafts where the casters are located) via a braking assembly, when the patient slides the second handrail, the braking assembly can simultaneously brake or unlock the two casters, achieving braking control within the natural operating range of the hand. Compared with the prior art, the patient does not need to bend over or lift their foot to step on the brake, effectively avoiding the risk of secondary injury. Especially in emergency situations, the patient can quickly slide the second handrail to brake, improving the safety of walking training.

[0016] In this invention, the lifting rod is connected to the base plate through a lifting assembly. The height of the support rod and handrail can be flexibly adjusted according to the patient's height. The patient or caregiver can achieve precise lifting by standing and turning the handwheel, without having to squat, which is labor-saving and convenient.

[0017] In this invention, when the second handrail slides into position (i.e., the braking or unlocking operation is completed), the locking component inserts the locking shaft into the corresponding first or second locking hole to reliably lock the second handrail, preventing the handrail from accidentally shifting due to vibration or accidental touch during training, thereby ensuring the long-term stability of the braking or unlocking state and improving the reliability of the device. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of the walking assistance device described in this invention; Figure 2 This is a schematic diagram of the braking assembly of the walking assistance device described in this invention; Figure 3 This is a schematic diagram of the transmission components of the walking assistance device described in this invention; Figure 4 This is a schematic diagram of the connection components of the walking assistance device described in this invention; Figure 5 This is a schematic diagram of the locking component of the walking assistance device described in this invention; Figure 6 This is a schematic diagram of the lifting assembly of the walking assistance device described in this invention.

[0020] Explanation of reference numerals in the attached figures: 10-Base plate, 101-Caser, 102-First rotating shaft, 11-Lifting rod, 12-Support rod, 121-First handrail, 122-Second handrail, 123-First locking hole, 124-Second locking hole, 13-Baffle, 14-Spring, 20-Brake assembly, 21-Second rotating shaft, 211-First bevel gear, 22-Second bevel gear, 23-Brake disc, 24-First connecting rod, 241-Brake plate, 242-Fixed shaft, 25-Fixed plate, 30-Transmission assembly, 31-Third rotating shaft, 311-Cam, 312-Fourth bevel gear, 32-Connecting shaft, 321-Third bevel gear, 322-Guide key, 40-Connecting assembly, 41-Slide Moving sleeve, 42-Fixed box, 421-First elongated slot, 422-First through hole, 43-Rotating sleeve, 431-First gear, 432-Boss, 44-First rack, 50-Locking assembly, 51-Slide plate, 511-Slide groove, 52-Locking shaft, 521-Slider, 53-Second elongated slot, 54-Hinge plate, 55-Second connecting rod, 551-Sliding column, 56-Hinge shaft, 60-Lifting assembly, 61-Lifting cylinder, 62-Screw, 621-Fifth bevel gear, 631-Sixth bevel gear, 632-Seventh bevel gear, 64-Fifth rotating shaft, 641-Eighth bevel gear, 642-Ninth bevel gear, 65-Handwheel, 651-Tenth bevel gear. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, in the following description, specific details such as particular system structures and technologies are set forth for illustrative purposes rather than for limiting purposes, in order to provide a thorough understanding of the embodiments of the present invention. However, those skilled in the art should understand that the present invention can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary details.

[0022] This invention provides a walking aid device for orthopedic rehabilitation, as per the appendix of the specification. Figure 1 To be continued Figure 6 It is known that a walking aid device for orthopedic rehabilitation mainly includes the following parts or components: base plate 10, lifting rod 11, support rod 12, and locking assembly 50.

[0023] In this invention, two sets of traveling components are symmetrically arranged at the lower end of the base plate 10. Each set of traveling components includes two casters 101 symmetrically rotated on both sides of the lower end of the base plate 10. The two casters 101 are respectively fixed to both ends of a first rotating shaft 102 horizontally arranged at the lower end of the base plate 10. A lifting rod 11 is vertically arranged above the base plate 10 and connected to the base plate 10 through a lifting assembly 60. The lifting rod 11 is raised and lowered under the drive of the lifting assembly 60. A support rod 12 is horizontally fixed to the upper end of the lifting rod 11 and is perpendicular to the lifting rod 11. The two sides of the lifting rod 11 are... A first handrail 121 is fixedly mounted on the support rod 12, and a second handrail 122 is slidably mounted on it. The second handrail 122 is connected to two first rotating shafts 102 respectively through a brake assembly 20. When the second handrail 122 slides, it will move away from or closer to the first handrail 121. At the same time, the second handrail 122 brakes or unlocks the two first rotating shafts 102 through the brake assembly 20. The locking assembly 50 is connected to the second handrail 122. When the second handrail 122 slides to the position, the locking assembly 50 locks the second handrail 122.

[0024] When using the device, the patient first adjusts the lifting rod 11 to a suitable height using the lifting assembly 60. Then, the patient holds the first handrail 121 (fixed side) and the second handrail 122 (sliding side) with both hands. When walking training is needed, the patient pushes or pulls the second handrail 122, causing it to slide along the support rod 12 and move away from or closer to the first handrail 121. During the sliding process, the braking assembly 20 transmits the motion to the two first rotating shafts 102, simultaneously braking or unlocking the two casters 101. Once the sliding is complete (i.e., the braking or unlocking operation is finished), the locking assembly 50 locks the second handrail 122 in its current position, ensuring that the braking or unlocking state is maintained. The patient can then safely perform walking training with the support of the first handrail 121 and the second handrail 122.

[0025] Specifically, anti-slip grip sleeves are installed on the first handrail 121 and the second handrail 122 to improve the comfort and anti-slip properties of the patient's grip.

[0026] Specifically, a weight distribution structure (such as a counterweight) is installed on the base plate 10 to make the device's center of gravity lower and more stable, preventing the device from tipping over when the patient's body is tilted.

[0027] Specifically, both the support rod 12 and the lifting rod 11 are rectangular.

[0028] As one embodiment, according to the appendix to the specification Figure 2It is known that the brake assembly 20 includes a second rotating shaft 21, which is horizontally mounted on the lower end of the base plate 10 and perpendicular to the first rotating shaft 102. Two first bevel gears 211 are fixed at both ends of the second rotating shaft 21 and mesh with two second bevel gears 22 on the two first rotating shafts 102 respectively. The two first bevel gears 211 are opposite to each other and the two second bevel gears 22 are opposite to each other. The brake disc 23 is fixed on the second rotating shaft 21. The first end of the first connecting rod 24 is provided with a brake plate 241, which is disposed opposite to the outer circumferential surface of the brake disc 23. The first connecting rod 24 is provided with a fixed shaft 242 near the first end. The fixed shaft 242 is connected to the fixed plate 25 fixed at the lower end of the base plate 10 on one side of the first connecting rod 24. The second end of the first connecting rod 24 is connected to the second handrail 122 through the transmission assembly 30. The first end of the first torsion spring is fixed to the fixed plate 25 and the second end is fixed to the fixed shaft 242.

[0029] When the second handrail 122 slides, the transmission assembly 30 drives the second end of the first connecting rod 24 to move. The first connecting rod 24 rotates around the fixed shaft 242, causing the brake plate 241 at its first end to move closer to or further away from the brake disc 23 on the second rotating shaft 21. When the brake plate 241 is in close contact with the outer circumferential surface of the brake disc 23, friction is generated between them, hindering the rotation of the second rotating shaft 21. Since the first bevel gears 211 at both ends of the second rotating shaft 21 mesh with the second bevel gears 22 on the two first rotating shafts 102 respectively, after the second rotating shaft 21 is braked, the two first rotating shafts 102 are braked synchronously, thereby stopping all four casters 101 in the two sets of traveling components from rotating, realizing parking brake. The first torsion spring provides a restoring force. When the second handrail 122 returns to its original position, the brake plate 241 automatically disengages from the brake disc 23, releasing the brake.

[0030] Specifically, wear-resistant friction pads (such as ceramic or semi-metallic materials) are installed on the contact surfaces of the brake plate 241 and the brake disc 23 to improve braking durability and friction coefficient.

[0031] Specifically, a limiting structure (existing technology) is installed between the fixed plate 25 and the first link 24 to limit the maximum rotation angle of the first link 24 and prevent the brake plate 241 from being excessively pressed, causing the brake disc 23 to jam or be damaged.

[0032] Specifically, annular patterns or holes are machined on the surface of the brake disc 23 to improve heat dissipation and drainage / dust removal capabilities.

[0033] Specifically, brake plate 241 is an arc-shaped plate.

[0034] As one embodiment, according to the appendix to the specification Figure 3It is known that the transmission assembly 30 includes a third rotating shaft 31, which is horizontally mounted on the lower end of the base plate 10. A cam 311 is eccentrically mounted on the first end of the shaft, and the outer circumferential surface of the cam 311 contacts the lower surface of the second end of the first connecting rod 24. The connecting shaft 32 is vertically mounted on the base plate 10, and a third bevel gear 321 is fixed after the lower end of the shaft passes through the base plate 10. The third bevel gear 321 meshes with a fourth bevel gear 312 fixed on the second end of the third rotating shaft 31. The upper end of the connecting shaft 32 is connected to the second handrail 122 through the connecting assembly 40.

[0035] When the second handrail 122 slides, the connecting shaft 32 is rotated through the connecting assembly 40. The third bevel gear 321 at the lower end of the connecting shaft 32 rotates accordingly, and drives the fourth bevel gear 312 meshing with it to rotate. The fourth bevel gear 312 is fixed at the second end of the third rotating shaft 31. The third rotating shaft 31 rotates accordingly, and the cam 311 (eccentrically set) at its first end rotates synchronously. The outer circumferential surface of the cam 311 contacts the lower surface of the second end of the first connecting rod 24. When the cam 311 rotates, it pushes the second end of the first connecting rod 24 to move up or down, thereby causing the first connecting rod 24 to swing around the fixed shaft 242, and finally drive the brake plate 241 at the first end to move closer to or away from the brake disc 23, completing the braking or unlocking action.

[0036] Specifically, a roller or arc-shaped sliding pad can be installed at the contact point between the cam 311 and the lower surface of the second end of the first connecting rod 24 to change sliding friction to rolling friction, reducing wear and driving force loss. A wear-resistant coating (such as DLC diamond-like carbon coating) can be sprayed onto the surface of the cam 311 to extend its service life.

[0037] As one embodiment, according to the appendix to the specification Figure 4 It is known that the connecting component 40 includes a sliding sleeve 41, which is coaxially sleeved on the support rod 12 and slidably connected thereto. The first side of the sliding sleeve 41 is fixedly connected to the second handrail 122. The first side plate of the fixed box 42 is fixedly connected to the second side of the sliding sleeve 41. The lower surface of the fixed box 42 is provided with a first elongated slot 421. The rotating sleeve 43 is coaxially sleeved on the connecting shaft 32. The inner wall of the rotating sleeve 43 is provided with a guide groove along its axial direction. The guide groove is slidably connected to the guide key 322 on the connecting shaft 32. The rotating sleeve 43 passes through the first elongated slot 421 and extends into the fixed box 42, where a first gear 431 is fixedly provided. The first side plate inside the fixed box 42 is horizontally fixed with a first rack 44. The first rack 44 meshes with the first gear 431. The rotating sleeve 43 on both sides of the first elongated slot 421 is coaxially fixed with a boss 432. The diameter of the boss 432 is larger than the width of the first elongated slot 421.

[0038] The second handrail 122 is fixedly connected to the first side of the sliding sleeve 41. When the second handrail 122 slides, the sliding sleeve 41 slides synchronously along the support rod 12. The fixed box 42 moves together with the sliding sleeve 41. The first rack 44 inside the fixed box 42 meshes with the first gear 431 fixed on the rotating sleeve 43. Since the rotating sleeve 43 slides through the guide groove and the guide key 322 on the connecting shaft 32 (it can slide axially but cannot rotate relative to it), when the fixed box 42 moves, the first rack 44 drives the first gear 431 to rotate, and the rotating sleeve 43 rotates accordingly, transmitting torque to the connecting shaft 32 through the guide key 322, causing the connecting shaft 32 to rotate synchronously. The upper and lower bosses 432 of the rotating sleeve 43 are on both sides of the first elongated slot 421 on the lower surface of the fixed box 42, which can both rise and fall with the fixed box 42 and rotate freely. This realizes the conversion from the linear sliding of the second handrail 122 to the rotational motion of the connecting shaft 32.

[0039] Specifically, wear-resistant sliding pads or ball bushings are installed on both sides of the first long slot 421 to reduce the frictional resistance between the boss 432 and the edge of the first long slot 421.

[0040] Specifically, a linear bearing or nylon bushing is installed on the inner wall of the sliding sleeve 41 to reduce sliding friction with the support rod 12, making operation easier.

[0041] Specifically, multiple guide grooves and guide keys 322 (e.g., 2 to 4) can be evenly distributed to improve the smoothness of torque transmission and the accuracy of fit.

[0042] As one embodiment, according to the appendix to the specification Figure 5 It is known that the locking component 50 includes a sliding plate 51, which is vertically fixed on the sliding sleeve 41. A first through hole 422 is provided on one side of the sliding sleeve 41. A first locking hole 123 and a second locking hole 124 are provided parallel to each other on the support rod 12 below the first through hole 422. The locking shaft 52 is positioned above the first through hole 422. A slider 521 is fixed on the first side of the locking shaft 52. The slider 521 is slidably connected to the slide groove 511 on the sliding plate 51. When the sliding sleeve 41 slides to the point where the first through hole 422 is opposite to the first locking hole 123, the lower end of the locking shaft 52 passes through the first through hole 422 and inserts or exits the first locking hole 123 under the drive of the pressing component. When the sliding sleeve 41 slides to the point where the first through hole 422 is opposite to the second locking hole 124, the lower end of the locking shaft 52 passes through the first through hole 422 and inserts or exits the second locking hole 124 under the drive of the pressing component.

[0043] When the sliding sleeve 41 slides on the support rod 12, the slide plate 51 moves together with the sliding sleeve 41. When the sliding sleeve 41 slides to a certain position (corresponding to the position where the second handrail 122 completes the braking or unlocking operation), the first through hole 422 on the sliding sleeve 41 is exactly aligned with the first locking hole 123 or the second locking hole 124 on the support rod 12. Subsequently, the patient drives the locking shaft 52 downward by pressing the component. Guided by the groove 511 on the slide plate 51, the locking shaft 52 is vertically inserted into the first through hole 422 and enters the first locking hole 123 or the second locking hole 124, thereby locking the sliding sleeve 41 to the support rod 12 and preventing the sliding sleeve 41 from continuing to slide. When unlocking is required, the patient reverses the operation by pressing the component, the locking shaft 52 exits from the locking hole, and the sliding sleeve 41 returns to its free sliding state.

[0044] Specifically, a chamfer or tapered guide head is machined at the lower end of the locking shaft 52 to facilitate the smooth insertion of the locking shaft 52 into the lock hole and reduce the alignment accuracy requirements.

[0045] Specifically, metal bushings are installed on the inner walls of the first keyhole 123 and the second keyhole 124 to improve the wear resistance and service life of the keyholes.

[0046] Specifically, the positions of the first keyhole 123 and the second keyhole 124 are marked with words such as "unlock" and "brake" to help patients identify the current status.

[0047] As one embodiment, according to the appendix to the specification Figure 5 It is known that the pressing component includes a hinge plate 54, which is fixed on the second armrest 122 and close to the sliding sleeve 41; a sliding post 551 is fixed at the first end of the second connecting rod 55, and the sliding post 551 is slidably connected to the second elongated slot 53 fixed on the second side of the locking shaft 52; a hinge shaft 56 is fixed near the first end of the second connecting rod 55, and the hinge shaft 56 is connected to the hinge plate 54 pivotally; the second end of the second connecting rod 55 is located above the gripping area of ​​the second armrest 122; the first end of the second torsion spring is fixed to the hinge plate 54, and the second end is fixed to the hinge shaft 56.

[0048] When the patient holds the second armrest 122, they press the second end of the second link 55 (located above the gripping area of ​​the second armrest 122) upwards with their thumb or palm. The second link 55 rotates around the hinge shaft 56, and the sliding post 551 at its first end slides within the second elongated slot 53 on the second side of the locking shaft 52, causing the locking shaft 52 to move upwards (or downwards) along the slide groove 511, thus disengaging or inserting the locking shaft 52 into the lock hole. A second torsion spring provides a restoring force; when the patient releases the pressure, the second link 55 automatically returns to its initial position, and the locking shaft 52 remains in the corresponding locked or unlocked state. Because the pressing component is located near the gripping area of ​​the second armrest 122, the patient can complete the unlocking operation while holding the armrest without needing to move their hand.

[0049] Specifically, a pressure plate or pad is installed at the second end of the second link 55 (i.e., the area where the patient presses), increasing the contact area and improving the comfort of pressing. Anti-slip textures can be added to the surface of the pressure pad to prevent fingers from slipping.

[0050] As one embodiment, according to the appendix to the specification Figure 4 It can be seen that two baffles 13 are fixed on the support rods 12 on both sides of the fixed box 42, and a spring 14 is provided between one of the baffles 13 and the fixed box 42.

[0051] When the patient pushes the second handrail 122 to slide in the unlocking direction, so that the first through hole 422 on the sliding sleeve 41 is opposite to the first locking hole 123 on the support rod 12 (i.e., the unlocking position), the fixing box 42 moves accordingly and compresses the spring 14, and the spring 14 stores elastic potential energy. When the patient pushes the second handrail 122 in the opposite direction to slide it in the braking direction, so that the first through hole 422 is opposite to the second locking hole 124 on the support rod 12 (i.e. the braking position), the spring 14 releases elastic potential energy, which helps to push the fixed box 42 to move towards the braking side, which helps the second handrail 122 to reach the braking position accurately and effortlessly. Specifically, guide rods and spring 14 seats are added to both ends of spring 14 to prevent spring 14 from bending or shifting during compression and release, and to ensure that the direction of the auxiliary thrust is always consistent with the sliding direction.

[0052] Specifically, an adjustable spring 14 preload structure (such as an adjusting screw) is installed on the baffle 13, allowing the patient to fine-tune the auxiliary thrust according to their own strength and usage habits, thus improving human-machine compatibility. A telescopic dust cover is also installed on the outside of the spring 14 to prevent dust, hair, and other debris from entering the gap of the spring 14, ensuring the flexibility and lifespan of the spring 14 for long-term use.

[0053] As one embodiment, according to the appendix to the specification Figure 6 It is known that the lifting assembly 60 includes a lifting cylinder 61, which is fixed on the base plate 10 and coaxially sleeved on the lifting rod 11; the screw 62 is rotatably installed inside the lifting cylinder 61 and threadedly connected to and passes through the lifting rod 11, and the screw 62 rotates under the drive of the driving assembly.

[0054] The lifting cylinder 61 is fixed on the base plate 10. The lifting rod 11 is coaxially sleeved inside the lifting cylinder 61. The lifting rod 11 has a threaded hole inside or at the bottom. The screw 62 is rotatably installed inside the lifting cylinder 61 and threadedly connected to the lifting rod 11. When the drive assembly drives the screw 62 to rotate, the lifting rod 11 is circumferentially limited and cannot rotate with the screw 62. The rotational motion of the screw 62 is converted into the linear motion of the lifting rod 11 along the axial direction, thereby realizing the lifting rod 11 rising or falling inside the lifting cylinder 61, and thus driving the support rod 12 and the first handrail 121 and the second handrail 122 to rise and fall as a whole.

[0055] Specifically, the screw thread 62 is preferably a trapezoidal or rectangular thread, which has the characteristics of good self-locking performance and strong load-bearing capacity. It can also be equipped with a height adjustment scale or graduation line to facilitate precise adjustment to the appropriate height by the patient.

[0056] As one embodiment, according to the appendix to the specification Figure 6 It is known that the drive assembly includes a fifth bevel gear 621, which is fixed on the screw 62; a fourth rotating shaft is horizontally mounted on the lifting cylinder 61, and a sixth bevel gear 631 fixed after its first end passes through the lifting cylinder 61 and meshes with the fifth bevel gear 621; a seventh bevel gear 632 is fixed at the second end of the fourth rotating shaft; a fifth rotating shaft 64 is vertically mounted on the lifting cylinder 61, and an eighth bevel gear 641 fixed at its lower end meshes with the seventh bevel gear 632; a ninth bevel gear 642 is fixed at the upper end of the fifth rotating shaft 64; a handwheel 65 is rotatably mounted on the lifting cylinder 61 above the fifth rotating shaft 64, and a tenth bevel gear 651 fixed on the handwheel 65 meshes with the ninth bevel gear 642.

[0057] When the patient turns handwheel 65, the tenth bevel gear 651 fixed on handwheel 65 rotates accordingly, driving the ninth bevel gear 642, which meshes with it, to rotate. The ninth bevel gear 642 is fixed at the upper end of the fifth rotating shaft 64, which rotates accordingly. The eighth bevel gear 641 at its lower end rotates synchronously, driving the seventh bevel gear 632 to rotate. The seventh bevel gear 632 is fixed at the second end of the fourth rotating shaft, which rotates accordingly. The sixth bevel gear 631 at its first end drives the fifth bevel gear 621 to rotate. The fifth bevel gear 621 is fixed on the screw 62, ultimately driving the screw 62 to rotate. This transmits the rotational motion of handwheel 65 to screw 62, achieving effortless height adjustment and reversible arrangement.

[0058] Specifically, spiral bevel gears are preferred for each bevel gear, resulting in smoother transmission, lower noise, and higher load-bearing capacity.

[0059] Specifically, a folding handle or a crank handle is installed on the handwheel 65 to allow the patient to apply greater torque and further reduce effort.

[0060] Specifically, the fourth and fifth rotating shafts 64 are equipped with anti-axial movement structures (such as shaft shoulders and retaining rings) to prevent axial movement from affecting the gear meshing accuracy.

[0061] Specifically, a locking knob is installed at the handwheel 65 position. After adjustment, the handwheel 65 is locked to prevent the lifting rod 11 from sliding down automatically under the action of gravity.

[0062] As one embodiment, according to the appendix to the specification Figure 5 It can be seen that the slide 511 is a dovetail groove, and the slider 521 is adapted to it.

[0063] The slider 521, which is fixed on the first side of the locking shaft 52, slides in the dovetail groove on the slide plate 51. The cross-section of the dovetail groove is trapezoidal (narrower at the top and wider at the bottom or wider at the inside and narrower at the outside). The shape of the slider 521 is adapted to it. When the locking shaft 52 is driven up and down by the pressing component, the slider 521 slides in the dovetail groove. The structure of the dovetail groove restricts the slider 521 to slide only along the length direction of the groove (i.e., the vertical direction) and cannot disengage from the opening direction of the groove, thus ensuring the accuracy and reliability of the movement of the locking shaft 52.

[0064] This invention provides a walking aid device for orthopedic rehabilitation. The specific method of use is as follows: When using the device, the patient first adjusts the lifting rod 11 to a suitable height using the lifting assembly 60. Then, the patient holds the first handrail 121 (fixed side) and the second handrail 122 (sliding side) with both hands. When walking training is needed, the patient pushes or pulls the second handrail 122, causing it to slide along the support rod 12 and move away from or closer to the first handrail 121. During the sliding process, the braking assembly 20 transmits the motion to the two first rotating shafts 102, simultaneously braking or unlocking the two casters 101. Once the sliding is complete (i.e., the braking or unlocking operation is finished), the locking assembly 50 locks the second handrail 122 in its current position, ensuring that the braking or unlocking state is maintained. The patient can then safely perform walking training with the support of the first handrail 121 and the second handrail 122.

[0065] It should be noted that in this patent application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0066] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included within the protection scope of the present invention.

Claims

1. A walking aid device for orthopedic rehabilitation, characterized in that, include, The base plate (10) has two sets of traveling components symmetrically arranged at its lower end. Each set of traveling components includes two casters (101) symmetrically rotated on both sides of the lower end of the base plate (10). The two casters (101) are respectively fixed to the two ends of the first rotating shaft (102) horizontally arranged at the lower end of the base plate (10). The lifting rod (11) is vertically installed above the base plate (10) and connected to the base plate (10) through the lifting assembly (60). The lifting rod (11) is lifted and lowered under the drive of the lifting assembly (60). A support rod (12) is horizontally fixed at the upper end of the lifting rod (11) and perpendicular to the lifting rod (11). A first handrail (121) is fixed on the support rod (12) on both sides of the lifting rod (11) and a second handrail (122) is slidably mounted on it. The second handrail (122) is connected to two first rotating shafts (102) respectively through a brake assembly (20). When the second handrail (122) slides, it will move away from or closer to the first handrail (121). At the same time, the second handrail (122) brakes or unlocks the two first rotating shafts (102) through the brake assembly (20). The locking component (50) is connected to the second handrail (122) and locks the second handrail (122) when the second handrail (122) slides into place.

2. The orthopedic rehabilitation walking aid device according to claim 1, characterized in that, The brake assembly (20) includes: The second rotating shaft (21) is horizontally mounted at the lower end of the base plate (10) and perpendicular to the first rotating shaft (102). The two first bevel gears (211) fixed at both ends of the second rotating shaft (21) mesh with the two second bevel gears (22) on the two first rotating shafts (102), respectively. The two first bevel gears (211) are opposite to each other, and the two second bevel gears (22) are opposite to each other. Brake disc (23) is fixed on the second rotating shaft (21); The first connecting rod (24) has a brake plate (241) at its first end. The brake plate (241) is disposed opposite to the outer circumferential surface of the brake disc (23). The first connecting rod (24) has a fixed shaft (242) near its first end. The fixed shaft (242) is connected to the fixed plate (25) fixed at the lower end of the bottom plate (10) on one side of the first connecting rod (24) via a rotating shaft. The second end of the first connecting rod (24) is connected to the second handrail (122) through a transmission assembly (30). The first torsion spring has its first end fixed to the fixed plate (25) and its second end fixed to the fixed shaft (242).

3. The orthopedic rehabilitation walking aid device according to claim 2, characterized in that, The transmission assembly (30) includes: The third rotating shaft (31) is horizontally mounted at the lower end of the base plate (10), and its first end is eccentrically provided with a cam (311). The outer circumferential surface of the cam (311) is in contact with the lower surface of the second end of the first connecting rod (24). The connecting shaft (32) is vertically mounted on the base plate (10). Its lower end passes through the base plate (10) and is fixed with a third bevel gear (321). The third bevel gear (321) meshes with a fourth bevel gear (312) fixed at the second end of the third rotating shaft (31). The upper end of the connecting shaft (32) is connected to the second handrail (122) through a connecting assembly (40).

4. The orthopedic rehabilitation walking aid device according to claim 3, characterized in that, The connection component (40) includes: A sliding sleeve (41) is coaxially sleeved on the support rod (12) and slidably connected thereto. The first side of the sliding sleeve (41) is fixedly connected to the second handrail (122). The fixing box (42) has its first side plate fixedly connected to the second side of the sliding sleeve (41), and the lower surface of the fixing box (42) is provided with a first elongated slot (421). A rotating sleeve (43) is coaxially sleeved on the connecting shaft (32). The inner wall of the rotating sleeve (43) is provided with a guide groove along its axial direction. The guide groove is slidably connected with the guide key (322) on the connecting shaft (32). The rotating sleeve (43) passes through the first long slot (421) and extends into the fixed box (42) and is fixed with a first gear (431). The first side plate inside the fixed box (42) is horizontally fixed with a first rack (44). The first rack (44) meshes with the first gear (431). The rotating sleeve (43) on the upper and lower sides of the first long slot (421) is coaxially fixed with a boss (432). The diameter of the boss (432) is greater than the width of the first long slot (421).

5. The orthopedic rehabilitation walking aid device according to claim 4, characterized in that, The locking component (50) includes: The slide plate (51) is vertically fixed on the sliding sleeve (41). A first through hole (422) is provided on one side of the sliding sleeve (41). A first locking hole (123) and a second locking hole (124) are provided parallel on the support rod (12) below the first through hole (422). A locking shaft (52) is positioned above the first through hole (422). A slider (521) is fixedly mounted on the first side of the locking shaft (52). The slider (521) is slidably connected to the slide groove (511) on the slide plate (51). When the sliding sleeve (41) slides to the point where the first through hole (422) is opposite to the first lock hole (123), the lower end of the locking shaft (52) passes through the first through hole (422) and inserts into or exits the first lock hole (123) under the drive of the pressing component. When the sliding sleeve (41) slides to the point where the first through hole (422) is opposite to the second lock hole (124), the lower end of the locking shaft (52) passes through the first through hole (422) and inserts into or exits the second lock hole (124) under the drive of the pressing component.

6. The orthopedic rehabilitation walking aid device according to claim 5, characterized in that, The pressing component includes: The hinge plate (54) is fixed on the second handrail (122) and close to the sliding sleeve (41). The second link (55) has a sliding post (551) fixed at its first end. The sliding post (551) is slidably connected to the second long slot (53) fixed on the second side of the locking shaft (52). The second link (55) has a hinge shaft (56) fixed near its first end. The hinge shaft (56) is connected to the hinge plate (54) shaft. The second end of the second link (55) is located above the gripping area of ​​the second handrail (122). The second torsion spring has its first end fixed to the hinge plate (54) and its second end fixed to the hinge shaft (56).

7. A walking aid device for orthopedic rehabilitation according to claim 4, characterized in that, Two baffles (13) are fixed on the support rods (12) on both sides of the fixed box (42), and a spring (14) is provided between one of the baffles (13) and the fixed box (42).

8. The orthopedic rehabilitation walking aid device according to claim 1, characterized in that, The lifting assembly (60) includes: The lifting cylinder (61) is fixed on the base plate (10) and coaxially sleeved on the lifting rod (11); The screw (62) is installed inside the lifting cylinder (61) and is threadedly connected to and passes through the lifting rod (11). The screw (62) rotates under the drive of the drive assembly.

9. A walking aid device for orthopedic rehabilitation according to claim 8, characterized in that, The driving component includes: The fifth bevel gear (621) is fixed on the screw (62); The fourth rotating shaft is horizontally mounted on the lifting cylinder (61). Its first end passes through the lifting cylinder (61) and the sixth bevel gear (631) fixed thereon meshes with the fifth bevel gear (621). The second end of the fourth rotating shaft is fixed with a seventh bevel gear (632). The fifth rotating shaft (64) is vertically mounted on the lifting cylinder (61), and the eighth bevel gear (641) fixed at its lower end meshes with the seventh bevel gear (632). The ninth bevel gear (642) is fixed at the upper end of the fifth rotating shaft (64). The handwheel (65) is mounted on the lifting cylinder (61) above the fifth rotating shaft (64), and the tenth bevel gear (651) fixed on the handwheel (65) meshes with the ninth bevel gear (642).

10. A walking aid device for orthopedic rehabilitation according to claim 5, characterized in that, The groove (511) is a dovetail groove, and the slider (521) is adapted to it.

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