A height-adjustable rehabilitation wheelchair

Abstract

The utility model relates to rehabilitation wheelchair technical field especially, more particularly to a height -adjusting type rehabilitation wheelchair, including wheelchair frame, the upper end fixed mounting of wheelchair frame has the platform, one side fixed mounting of platform has the backrest, the outward one side of backrest along both ends symmetry is installed and has the push handle, the upper end of platform is covered and has the cushion, the both sides of wheelchair frame all are fixedly installed and have the mounting seat, the inside insertion of mounting seat is installed and has the handrail frame of the agreement of wheelchair frame, the inward one side of handrail frame is assembled and is provided with the baffle, the wheelchair bottom front end of the utility model installs the anti -incline baffle block, can effectively prevent wheelchair and turn over to the front under the sudden situation, simultaneously, the rear part of wheelchair symmetry is provided with the anti -leaning support wheel, this provides the double protection for preventing wheelchair and leans backward because of gravity deviation, in addition, the baffle of installing on handrail frame fills the open -work area, avoids the possible accidental side slip or skew of user's body, strengthens the support effect from the side.

Description

Technical Field

[0001] This utility model relates to the field of rehabilitation wheelchair technology, and in particular to an adjustable height rehabilitation wheelchair. Background Technology

[0002] Rehabilitation wheelchairs and rehabilitation walkers are two important types of assistive devices in rehabilitation medicine. They are designed to help patients with mobility impairments, such as those recovering from surgery, those with neurological injuries, the elderly, or people with disabilities, improve their mobility, quality of life, and promote functional independence. Through scientific design and functional adaptation, they provide safe and effective support for patients at different stages of rehabilitation.

[0003] Rehabilitation wheelchairs are mobility aids designed for people with limited mobility. Their core objectives are to balance safety, comfort, and functionality. For example, the existing Chinese patent publication "CN209019201U" provides a rehabilitation wheelchair, including a frame with a seat. A drive wheel and a driven wheel are rotatably mounted on the rear of the frame. Two guide wheels are rotatably mounted on the front of the frame. A first drive shaft and a second drive shaft are rotatably mounted on the frame, with the drive wheel connected to the first drive shaft. A first flywheel is mounted on the first drive shaft near the drive wheel. A second flywheel is mounted at the front end of the second drive shaft, and a first chain connects the first and second flywheels. A rear sprocket is mounted at the rear end of the second drive shaft. A front sprocket is rotatably mounted at the front bottom of the frame, and the front and rear sprockets are connected via a second chain. A crank is connected to the front sprocket, and a footrest is connected to the crank. This utility model has a simple structure, is easy to use, and has low cost. It can be used for rehabilitation exercises for people with lower limb disabilities, effectively preventing problems such as muscle atrophy, numbness, and stiffness in the limbs, thereby enabling people with hemiplegia and other lower limb disabilities to walk as soon as possible.

[0004] Currently, most rehabilitation wheelchairs, due to their frame limitations, cannot adjust the height of the seat. This causes inconvenience for patients of different heights when using the wheelchair. For example, if the seat is too high, shorter patients cannot stably place their feet on the footrest. If the seat is too low, taller patients may experience excessive bending of their legs after placing their feet on the footrest, leading to discomfort from prolonged sitting. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned shortcomings in the existing technology by proposing an adjustable height rehabilitation wheelchair.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: Design an adjustable height rehabilitation wheelchair, including a wheelchair frame, a platform fixedly installed at the upper end of the wheelchair frame, a backrest fixedly installed on one side of the platform, push handles symmetrically installed at both ends on the outward side of the backrest, and a seat cushion covering the upper end of the platform. Mounting seats are fixedly installed on both sides of the wheelchair frame. Armrest frames that fit the wheelchair frame are inserted into the mounting seats. A baffle is installed on the inward side of the armrest frame. The wheelchair frame has pedals fixedly installed on both sides of the front. A support plate for leg support is hinged to the side of the wheelchair frame near the pedals. The end of the support plate away from the hinge point covers the surface of the wheelchair frame.

[0007] Preferably, an anti-tilting block is fixedly installed at the lower end of the wheelchair frame near the front, and anti-backward support wheels are symmetrically distributed at the lower end of the wheelchair frame near the rear.

[0008] Preferably, a motor is fixedly installed at the lower end of the wheelchair frame, and drive shafts for driving and synchronous operation are provided on both sides of the motor. Rear wheels are fixedly installed at the ends of the drive shafts, and front wheels are symmetrically installed at the lower end of the wheelchair frame near the front.

[0009] Preferably, a battery is fixedly installed on the upper end of the motor housing, and a control console is fixedly installed at the end of one side of the handrail. The control console, the battery, and the motor are all connected by wires.

[0010] Preferably, the platform has an internal groove, and an internal sleeve is symmetrically embedded and fixed at the bottom of the internal groove along both sides. A cylinder is slidably connected inside the internal sleeve. The cylinders distributed along both sides are electrically connected to the control console through wires. Positioning plates are fixedly installed on both sides of the outer wall of the cylinder, and the positioning plates are fitted to the surface of the platform.

[0011] Preferably, the cylinder is provided with a piston rod for extension and retraction, and an elastic clip is fixedly installed at the end of the piston rod. A card seat corresponding to the position of the elastic clip is fixedly installed at the lower end of the seat, and the surface of the elastic clip and the interior of the card seat are engaged with each other.

[0012] Preferably, a collar is embedded and fixed inside the positioning plate, and a threaded post corresponding to the position of the collar is fixedly installed at the lower end of the platform. The surface of the threaded post is slidably sleeved with the inside of the collar, and a threaded cap is threadedly installed on the surface of the threaded post. One end of the threaded cap is tightly abutted against the end face of the collar.

[0013] The design scheme proposed in this utility model has the following beneficial effects in application: 1. The wheelchair of this utility model is equipped with an anti-tilting block at the front of the bottom, which can effectively prevent the wheelchair from tipping forward in case of an emergency. At the same time, anti-backward support wheels are symmetrically arranged at the rear of the wheelchair, which provides double protection against the wheelchair tipping backward due to the shift of the center of gravity. In addition, the baffle installed on the armrest frame fills the hollow area, avoiding accidental side slip or tilting of the user's body, and enhancing the support effect from the side. 2. The seat cushion of this utility model cleverly integrates a lifting mechanism driven by a cylinder. Users or caregivers can easily operate it through the control panel on the armrest, so that the height of the seat cushion can be flexibly adjusted according to the patient's actual rehabilitation needs, treatment process or personal comfort. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the front structure of the wheelchair of this utility model; Figure 2 This is a schematic diagram of the rear structure of the wheelchair according to the present invention; Figure 3 This is a schematic diagram of the internal structure connecting the platform and the seat cushion of this utility model; Figure 4 For the present utility model Figure 3 Enlarged diagram of point A.

[0015] In the diagram: 1. Wheelchair frame; 11. Platform; 12. Backrest; 13. Push handle; 14. Seat cushion; 15. Mounting base; 16. Armrest frame; 17. Baffle; 18. Pedal; 19. Support plate; 2. Anti-tilt block; 21. Anti-backward support wheel; 3. Motor; 31. Drive shaft; 32. Rear wheel; 33. Battery; 34. Control console; 35. Front wheel; 4. Internal slot; 41. Internal sleeve; 42. Cylinder; 43. Positioning plate; 44. Elastic clip; 45. Clip seat; 401. Collar; 402. Threaded post; 403. Threaded cap. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0017] Reference Figures 1-4 An adjustable height rehabilitation wheelchair includes a wheelchair frame 1, a platform 11 fixedly installed on the upper end of the wheelchair frame 1, a backrest 12 fixedly installed on one side of the platform 11, push handles 13 symmetrically installed on both ends of the outward side of the backrest 12, and a seat cushion 14 covering the upper end of the platform 11. The platform 11 can be used for auxiliary reinforcement of the wheelchair frame 1, and at the same time, it can provide stable mounting points for the backrest 12 and the seat cushion 14. Both sides of the wheelchair frame 1 are fixedly installed with mounting bases 15. The mounting bases 15 are inserted and installed with armrest frames 16 that fit the wheelchair frame 1. A baffle 17 is installed on the inward side of the armrest frame 16. The armrest frame 16 can facilitate the patient's hand support, and the baffle 17 can prevent the open area of ​​the armrest frame 16 from being too large, which would cause the patient's body to tilt. The wheelchair frame 1 has pedals 18 fixedly installed on both sides of the front. A support plate 19 for leg support is hinged to the side of the wheelchair frame 1 near the pedals 18. The end of the support plate 19 away from the hinge point covers the surface of the wheelchair frame 1. The pedals 18 can be used for foot support of the patient, and the support plate 19 can be used for leg support of the patient.

[0018] Among them, the lower end of the wheelchair frame 1 is fixedly installed with an anti-tilting block 2 near the front position, and the lower end of the wheelchair frame 1 is symmetrically installed with anti-backward support wheels 21 near the rear position. The anti-tilting block 2 can prevent the patient from tilting the wheelchair forward and falling while using the wheelchair, and the anti-backward support wheels 21 can prevent the patient from tilting the wheelchair backward while using the wheelchair.

[0019] The lower end of the wheelchair frame 1 is fixedly equipped with a motor 3. Both sides of the motor 3 are provided with drive shafts 31 for driving and synchronously cooperating. The ends of the drive shafts 31 are fixedly equipped with rear wheels 32. The lower end of the wheelchair frame 1 is also symmetrically equipped with front wheels 35 near the front. The drive shaft 31 of the motor 3 is centrally through, and the two rear wheels 32 can be synchronously driven to rotate through a single drive shaft 31. The front wheels 35 can play an auxiliary forward movement role.

[0020] The upper part of the housing of the motor 3 is fixedly installed with a battery 33, and the end of the handrail 16 on one side is fixedly installed with a control console 34. The control console 34, the battery 33 and the motor 3 are all connected by wires. The battery 33 can provide power to the operation of the motor 3 and the cylinder 42. The control console 34 includes a joystick area and a button area. The joystick area mainly controls the operation of the motor 3, and the button area mainly controls the operation of the cylinder 42.

[0021] The platform 11 has an internal groove 4. The bottom of the internal groove 4 is symmetrically embedded with internal sleeves 41 on both sides. The internal sleeves 41 are slidably connected to cylinders 42. The cylinders 42 distributed on both sides are electrically connected to the control console 34 through wires. Positioning plates 43 are fixedly installed on both sides of the outer wall of the cylinders 42. The positioning plates 43 are fitted to the surface of the platform 11. The seat cushion 14 can be adjusted to an appropriate height according to actual needs by adjusting the piston rod of the cylinder 42.

[0022] The cylinder 42 has a piston rod for extension and retraction inside, and an elastic clip 44 is fixedly installed at the end of the piston rod. The lower end of the cushion 14 is fixedly installed with a card seat 45 corresponding to the position of the elastic clip 44. The surface of the elastic clip 44 and the inside of the card seat 45 are interlocked. The end shape of the elastic clip 44 and the groove shape of the card seat 45 are both regular hexagons. The elastic clip 44 is made of rubber material, which makes it easy for the cushion 14 to be disassembled and cleaned regularly.

[0023] The positioning plate 43 has a collar 401 embedded and fixed inside. The lower end of the platform 11 is fixedly installed with a threaded post 402 corresponding to the position of the collar 401. The surface of the threaded post 402 is slidably sleeved with the inside of the collar 401. A threaded cap 403 is threadedly installed on the surface of the threaded post 402. One end of the threaded cap 403 is tightly abutted against the end face of the collar 401. When the cylinder 42 needs to be disassembled, the seat cushion 14 is removed first. Then, the threaded cap 403 is rotated so that the threaded cap 403 and the threaded post 402 are separated by threads, thus separating the collar 401 from the threaded post 402, and thus disassembling the seat cushion 14.

[0024] Working method: The built-in groove 4 of this solution is located inside the platform 11, and the bottom end of the groove is symmetrically embedded and fixed with the built-in sleeve 41. The cylinder 42 is slidably sleeved inside the built-in sleeve 41. Positioning plates 43 are fixedly installed on both sides of the outer wall of the cylinder 42. The positioning plates 43 are attached to the surface of the platform 11 to maintain stability. When the patient needs to operate the height adjustment through the control console 34, the cylinder 42 receives the command and drives the piston rod to extend and retract. The elastic clip 44 at the end of the piston rod and the clip 45 at the lower end of the seat cushion 14 are mutually engaged through the regular hexagonal structure to ensure effective power transmission. The elastic clip 44 is made of rubber material, which not only ensures the strong engagement, but also allows slight deformation to facilitate the regular disassembly and cleaning of the seat cushion 14. During the height adjustment process, the cylinder 42 guides the vertical movement through the built-in sleeve 41 to avoid tilting, so that the seat cushion 14 can be raised and lowered smoothly according to the patient's rehabilitation needs, improving the comfort and support of the sitting posture. The motor 3 is fixed to the lower end of the wheelchair frame 1, and synchronously running drive shafts 31 are set on both sides of it. The rear wheels 32 are fixedly installed at the ends of the drive shafts 31. The motor 3 adopts a central through-type drive shaft 31 design, which allows a single shaft to drive the rear wheels 32 on both sides to rotate simultaneously, ensuring synchronicity and stability during movement. The front wheels 35 are symmetrically installed at the front of the lower end of the wheelchair frame 1, which play an auxiliary steering and support role during movement. The power of the motor 3 is supplied by the storage battery 33, which is installed on the upper end of the motor 3 housing and connected to the control console 34 through wires. When the patient operates the joystick area of ​​the control console 34, the command is transmitted to the motor 3, which drives the rear wheels 32 to rotate, realizing forward, backward or turning. The front wheels 35 adjust their direction accordingly, ensuring that the wheelchair moves flexibly under various ground conditions. At the same time, the overall structure, together with the anti-tilting block 2 and the anti-backward support wheel 21, effectively prevents the risk of tipping. The anti-tilting block 2 is fixed to the lower front of the wheelchair frame 1, forming a barrier when the wheelchair suddenly tilts forward; the anti-backward support wheels 21 are symmetrically distributed at the lower rear of the wheelchair frame 1, providing additional support points when the wheelchair tilts backward to prevent it from falling backward; the mounting base 15 is fixed to both sides of the wheelchair frame 1, and the armrest frame 16 is inserted into it for easy hand support by the patient; the baffle 17 is fitted to the inward side of the armrest frame 16 to reduce the open area and prevent the patient from tilting and sliding out; the pedals 18 are fixed to both sides of the front of the wheelchair frame 1 for foot support; the support plate 19 is hinged to the side of the wheelchair frame 1 near the pedals 18, and can be unfolded to cover the surface of the wheelchair frame 1 to provide auxiliary support for the legs. The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A height-adjustable rehabilitation wheelchair, comprising a wheelchair frame (1), characterized in that: The upper end of the wheelchair frame (1) is fixedly equipped with a platform (11), a backrest (12) is fixedly installed on one side of the platform (11), push handles (13) are symmetrically installed on both ends of the outward side of the backrest (12), and a seat cushion (14) is covered on the upper end of the platform (11). Both sides of the wheelchair frame (1) are fixedly installed with mounting bases (15), and an armrest frame (16) that fits the wheelchair frame (1) is inserted into the mounting base (15). A baffle (17) is installed on the inward side of the armrest frame (16). The wheelchair frame (1) has pedals (18) fixedly installed on both sides of the front. A support plate (19) for leg support is hinged to the side of the wheelchair frame (1) near the pedals (18). The end of the support plate (19) away from the hinge point covers the surface of the wheelchair frame (1).

2. The height-adjustable rehabilitation wheelchair according to claim 1, characterized in that: The lower end of the wheelchair frame (1) is fixedly installed with an anti-tilting block (2) near the front, and the lower end of the wheelchair frame (1) is symmetrically installed with anti-backward support wheels (21) near the rear.

3. The height-adjustable rehabilitation wheelchair according to claim 2, characterized in that: The lower end of the wheelchair frame (1) is fixedly equipped with a motor (3), and both sides of the motor (3) are provided with drive shafts (31) for driving and synchronously cooperating. The end of the drive shaft (31) is fixedly equipped with a rear wheel (32), and the lower end of the wheelchair frame (1) is also symmetrically equipped with a front wheel (35) near the front.

4. The height-adjustable rehabilitation wheelchair according to claim 3, characterized in that: A battery (33) is fixedly installed on the upper end of the housing of the motor (3), and a control console (34) is fixedly installed at the end of the handrail (16) on one side. The control console (34), the battery (33) and the motor (3) are all connected by wires.

5. The height-adjustable rehabilitation wheelchair according to claim 4, characterized in that: The platform (11) has an internal groove (4). The bottom of the internal groove (4) is symmetrically embedded with an internal sleeve (41) on both sides. The internal sleeve (41) is slidably connected with a cylinder (42). The cylinders (42) distributed on both sides are connected to the control console (34) by wires. Positioning plates (43) are fixedly installed on both sides of the outer wall of the cylinder (42). The positioning plates (43) are attached to the surface of the platform (11).

6. The height-adjustable rehabilitation wheelchair according to claim 5, characterized in that: The cylinder (42) is provided with a piston rod for extension and retraction, and an elastic clip (44) is fixedly installed at the end of the piston rod. The lower end of the cushion (14) is fixedly installed with a card seat (45) corresponding to the position of the elastic clip (44). The surface of the elastic clip (44) and the interior of the card seat (45) are interlocked.

7. The height-adjustable rehabilitation wheelchair according to claim 6, characterized in that: The positioning plate (43) has a collar (401) embedded and fixed inside. The lower end of the platform (11) is fixedly installed with a threaded post (402) corresponding to the position of the collar (401). The surface of the threaded post (402) is slidably sleeved with the inside of the collar (401). A threaded cap (403) is threadedly installed on the surface of the threaded post (402). One end of the threaded cap (403) is tightly abutted against the end face of the collar (401).

Images