Wheelchair capable of being conveniently adjusted by lying flat, lifting back, lifting legs and bending legs

Abstract

The utility model relates to the field of wheelchairs, and discloses a wheelchair convenient for flat lying, back raising and leg bending adjustment, which comprises a frame, sliding frames are fixedly connected to the left side and the right side of the frame, armrests are slidably connected to the interiors of the sliding frames, manual bolts are in threaded connection to the interiors of the sliding frames, and two foot supports are rotatably connected to the front side of the frame. A first bolt and nut is rotationally connected into the foot support, gaskets are rotationally connected to the left side and the right side of the first bolt and nut, a first telescopic rod is rotationally connected to the inner side of the first bolt and nut, a first connecting block is fixedly connected to the output end of the first telescopic rod, and a second bolt and nut is rotationally connected into the first connecting block. According to the foot support, the first hand brake is pressed, the steel wire pulls the first pressing piece to deflect in the first connecting block under the supporting of the first fixing sleeve, the first telescopic rod pushes the first connecting block to drive the foot support to deflect up and down through reverse thrust under the connection of the second bolt nut and the first bolt nut, and the function that the angle of the foot support can be adjusted at will is achieved.

Description

Technical Field

[0001] This utility model relates to the field of wheelchairs, and more particularly to a wheelchair that is easy to adjust by lying flat, raising the back, bending the legs, and adjusting the backrest. Background Technology

[0002] A wheelchair is an assistive mode of transportation designed to help people with mobility impairments move and move independently. Depending on their design, wheelchairs can be divided into two main categories: manual wheelchairs and electric wheelchairs. Manual wheelchairs are propelled by the user or others and typically consist of a lightweight metal frame, seat, armrests, wheels, and footrests. They are suitable for users with good physical strength. Electric wheelchairs, on the other hand, are equipped with an electric motor and are powered by batteries. Users can control the movement of the wheelchair using a lever or switch. They are suitable for people with weaker physical strength or those who cannot use a manual wheelchair.

[0003] Modern wheelchairs not only emphasize functionality but also consider comfort and aesthetics to meet the needs of different users. Some wheelchairs are also designed with folding functions for easy carrying and storage. With the advancement of technology, some high-end electric wheelchairs have also integrated intelligent control systems, automatic balancing technology, and a variety of customization options, greatly improving the user experience and quality of life.

[0004] Existing wheelchairs include integrated folding and adjustable types. Integrated folding wheelchairs can be folded to save storage space, but the backrest and footrest angles cannot be adjusted. Adjustable wheelchairs have the function of adjusting the backrest and footrest angles, but the footrests of these wheelchairs are adjusted by using slots and locking bolts. This adjustment method can only adjust the angle of the footrests according to the distance between the slots, and cannot achieve multi-angle adjustment, which is quite limited. At the same time, the adjustment relies entirely on manual turning, which is time-consuming and laborious. Therefore, a wheelchair that is easy to adjust by lying flat, raising the backrest, and bending the legs is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a wheelchair that is easy to adjust when lying flat, raising the back, and bending the legs. It aims to improve the traditional wheelchair where the foot pedals are adjusted by using slots and locking bolts. This adjustment method can only adjust the angle of the foot pedals according to the distance between the slots, and cannot achieve multi-angle adjustment, which is quite limited. At the same time, the adjustment relies entirely on manual turning, which is time-consuming and laborious.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a wheelchair that facilitates reclining, backrest raising, leg bending, and adjustment, comprising a frame, with sliding frames fixedly connected to both sides of the frame, armrests slidably connected inside the sliding frames, and manual bolts threadedly connected inside the sliding frames. Two foot supports are rotatably connected to the front of the frame, with bolts and nuts rotatably connected inside each foot support. Washers are rotatably connected to both sides of each bolt and nut, and a telescopic rod is rotatably connected to the inner side of each bolt and nut. A connecting block is fixedly connected to the output end of the telescopic rod, and a bolt and nut are rotatably connected inside the connecting block. A pressure plate is rotatably connected inside the connecting block, and a fixing sleeve is fixedly connected to the outside of the pressure plate. A handbrake assembly is installed at the bottom of the armrest, with a steel wire passing through the fixing sleeve and engaging inside the pressure plate at the rear. A backrest is rotatably connected to the rear of the frame, with an extension section slidably connected to the top of the backrest. An adjustment assembly is installed on the rear of the frame for adjusting the angle of the backrest.

[0007] As a further description of the above technical solution:

[0008] The adjustment assembly includes two handles and a third handbrake. The bottom of the handles is rotatably connected to the rear side of the frame. A second handbrake assembly is installed at the bottom of the handles. Two support blocks are fixedly connected to the inner side of the frame. Bolts and nuts are rotatably connected inside the support blocks. A telescopic rod is rotatably connected to the middle of the bolts and nuts. A connecting block is fixedly connected to the output end of the telescopic rod. Bolts and nuts are rotatably connected inside the connecting block. A pressure plate is rotatably connected inside the connecting block. Two fixing sleeves are fixedly connected to the bottom of the connecting block. A steel wire passes through the front fixing sleeve and engages with the pressure plate. The top of the third handbrake is fixedly connected to the bottom of the left handrail. A diverter rod is fixedly connected to the rear side of the third handbrake by a steel wire. Two steel wires pass through the two rear fixing sleeves and engage with the two pressure plates.

[0009] As a further description of the above technical solution:

[0010] The handbrake assembly includes two handbrakes, with the top of each handbrake fixedly connected to the bottom of the handrail.

[0011] As a further description of the above technical solution:

[0012] The second handbrake assembly includes two second handbrakes, the top of which is fixedly connected to the rear side of the handle.

[0013] As a further description of the above technical solution:

[0014] The bolt and nut are externally rotatably connected to the bottom of the frame, and the inner side of the manual bolt and the outer side of the handrail abut against each other.

[0015] As a further description of the above technical solution:

[0016] The inner side of the gasket is rotatably connected to the outer side of the telescopic rod.

[0017] As a further description of the above technical solution:

[0018] The inner side of the pad and the outer side of the foot support abut each other.

[0019] As a further description of the above technical solution:

[0020] The bolt and nut are externally rotatably connected to the backrest, and the handle is fixedly connected to the outside of the backrest.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, by pressing the handbrake, the steel wire pulls the pressure plate to deflect within the connecting block under the support of the fixed sleeve. With the connection of the bolt and nut and the bolt and nut, the telescopic rod pushes the connecting block to drive the foot support to deflect up and down through the counter-thrust, thus realizing the function of freely adjusting the angle of the foot support.

[0023] 2. In this utility model, by pressing the second handbrake, under the support of the second fixed sleeve, the steel wire pulls the second pressure plate to deflect within the second connecting block. With the connection of the fourth bolt and the third bolt, the second telescopic rod will drive the second connecting block to deflect the backrest up and down, thus realizing the function of freely adjusting the backrest angle. At the same time, by pressing the third handbrake, under the connection of the steel wire, the branch rod divides the force into two parts and, together with the bottom steel wire, pulls the pressure plates on both sides to deflect, thus also realizing the adjustment of the backrest angle. Attached Figure Description

[0024] Figure 1 This is a three-dimensional schematic diagram of a wheelchair that is easy to adjust when lying flat, with the backrest raised and legs bent, according to the present invention.

[0025] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0026] Figure 3 This is a schematic diagram of the extension section of a wheelchair that is easy to adjust when lying down, raising the backrest, and bending the legs, according to the present invention.

[0027] Figure 4 for Figure 3 Enlarged view of point B in the middle;

[0028] Figure 5 for Figure 3 Enlarged view of point C in the middle;

[0029] Figure 6 for Figure 3 Enlarged view at point D;

[0030] Figure 7 for Figure 6 Enlarged view at point E in the middle;

[0031] Figure 8 This is a schematic diagram of the foot support structure of a wheelchair that is easy to adjust when lying down, raising the backrest, and bending the legs, according to the present invention.

[0032] Legend:

[0033] 1. Frame; 2. Sliding frame; 3. Handrail; 4. Manual bolt; 5. Foot support; 6. Bolt and nut 1; 7. Washer; 8. Telescopic rod 1; 9. Connecting block 1; 10. Bolt and nut 2; 11. Pressure plate 1; 12. Fixing sleeve 1; 13. Handbrake 1; 14. Backrest; 15. Extension section; 16. Handle; 17. Handbrake 2; 18. Support block; 19. Bolt and nut 3; 20. Telescopic rod 2; 21. Connecting block 2; 22. Bolt and nut 4; 23. Pressure plate 2; 24. Fixing sleeve 2; 25. Handbrake 3; 26. Diverter rod. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] Reference Figure 1 - Figure 4This utility model provides an embodiment of a wheelchair that facilitates reclining, backrest lifting, and leg bending adjustments. It includes a frame 1, with sliding frames 2 fixedly connected to both sides of the frame 1. Armrests 3 are slidably connected inside the sliding frames 2, and manual bolts 4 are threadedly connected inside the sliding frames 2. Two foot supports 5 are rotatably connected to the front of the frame 1. Bolts and nuts 6 are rotatably connected inside the foot supports 5. Washers 7 are rotatably connected to both sides of bolts and nuts 6. A telescopic rod 8 is rotatably connected inside bolts and nuts 6. A connecting block 9 is fixedly connected to the output end of the telescopic rod 8. Bolts and nuts 10 are rotatably connected inside the connecting block 9. A pressure plate 11 is rotatably connected inside the connecting block 9. A fixing sleeve 12 is fixedly connected to the outside of the pressure plate 11. The bottom of the armrests 3... The unit is equipped with a handbrake assembly 1. A steel wire passes through the fixing sleeve 12 on the rear side of the handbrake assembly 1 and engages with the pressure plate 11. A backrest 14 is rotatably connected to the rear side of the frame 1. An extension section 15 is slidably connected to the top of the backrest 14. The frame 1 supports the patient's weight and connects other parts. A sliding frame 2 facilitates the installation and removal of the handrail 3. The handrail 3 is used to comfortably position the patient's arms, keeping the patient relaxed. A manual bolt 4 is used to fix the handrail 3 to the sliding frame 2, facilitating its installation and removal. A footrest 5 is used to position the patient's legs, keeping them relaxed. A bolt and nut 6 connects the footrest 5 to the telescopic rod 8, allowing the telescopic rod 8 to move the footrest 5. A gasket 7 protects the footrest 5 from damage caused by the bolt and nut 6. Damage to foot support 5 is caused by the telescopic rod 8, which pushes foot support 5 to deflect it. Connecting block 9 bears the thrust of telescopic rod 8 and generates a counter-thrust, causing foot support 5 to deflect. Bolt and nut 10 are used to install connecting block 9 on frame 1 to keep telescopic rod 8 stable. Pressure plate 11 is used to press the trigger pin at the output end of telescopic rod 8 to extend and retract it. Fixing sleeve 12 is used to fix the steel wire connecting handbrake 13 and pressure plate 11 to keep the steel wire stable. Handbrake 13 allows the patient to manually deflect foot support 5 without troubling others. Backrest 14 supports the patient's back to keep them stable. Extension section 15 extends backrest 14 to facilitate the patient's movement. When lying flat, the head is effectively supported to avoid discomfort. An adjustment component is installed on the back of the frame 1 to adjust the angle of the backrest 14. The handbrake component includes two handbrakes 13. The top of the handbrake 13 is fixedly connected to the bottom of the armrest 3. The handbrake 13 is used to allow the patient to adjust the angle of the footrest 5. The bolt and nut 10 are externally rotatably connected to the bottom of the frame 1 to keep the telescopic rod 8 stable. The inside of the manual bolt 4 abuts against the outside of the armrest 3 to facilitate the disassembly and assembly of the armrest 3. The inside of the inner pad 7 is rotatably connected to the outside of the telescopic rod 8 to prevent the telescopic rod 8 from directly contacting the footrest 5 and causing friction. The inside of the pad 7 abuts against the outside of the footrest 5 to protect the footrest 5 from scratches.

[0036] Reference Figure 3 , Figure 5 , Figure 6 , Figure 7 , Figure 8 The adjustment assembly includes two handles 16 and a third handbrake 25. The bottom of the handles 16 is rotatably connected to the rear side of the frame 1. The second handbrake assembly is installed at the bottom of the handles 16. Two support blocks 18 are fixedly connected to the inside of the frame 1. Bolts and nuts 19 are rotatably connected inside the support blocks 18. Telescopic rod 20 is rotatably connected to the middle of bolts and nuts 19. Connecting block 21 is fixedly connected to the output end of telescopic rod 20. Bolts and nuts 22 are rotatably connected inside connecting block 21. Pressure plate 23 is rotatably connected inside connecting block 21. Two fixing sleeves 2 are fixedly connected to the bottom of connecting block 21. 24. The front of the second handbrake assembly is secured to the inside of the second pressure plate 23 by a steel wire passing through the front fixing sleeve 24. The top of the third handbrake assembly 25 is fixedly connected to the bottom of the left armrest 3. The rear of the third handbrake assembly 25 is fixedly connected to the diverter rod 26 by a steel wire. The output end of the diverter rod 26 passes through the two rear fixing sleeves 24 by two steel wires and is secured to the inside of the two pressure plates 23. The handle 16 is used to facilitate the movement of the entire wheelchair and the patient on the wheelchair. The second handbrake assembly 17 is used to facilitate the backrest 14 to tilt backward. The support block 18 is used to support and connect the telescopic rod 20. The bolt and nut assembly 19 is used for... To ensure the stability of the telescopic rod 20 and its rotation on the support block 18, the telescopic rod 20 is used to drive the backrest 14 to deflect. The connecting block 21 is used to bear the thrust of the telescopic rod 20 and support the backrest 14, keeping the backrest 14 stable. The bolt and nut 22 are used to connect the connecting block 21 to the backrest 14 and drive the backrest 14 to deflect. The pressure plate 23 is used to press the trigger pin at the output end of the telescopic rod 20, causing the telescopic rod 20 to extend or retract. The fixing sleeve 24 is used to connect the steel wire between the handbrake 2 17 and the pressure plate 23, and between the branch rod 26 and the pressure plate 23, so that... The steel wire remains stable. Handbrake 3 25 is used to allow the patient to raise and lower the backrest 14. Diverter 26 is used to divide the pulling force of handbrake 3 25 into two parts and simultaneously pull the two pressure plates 23 to move. Handbrake assembly 2 includes two handbrakes 2 17. The top of handbrake 2 17 is fixedly connected to the rear side of handle 16 to facilitate control of telescopic rod 20 to deflect the backrest 14. Bolt and nut 4 22 is externally rotatably connected to the rear side of backrest 14 so that telescopic rod 20 can drive backrest 14 to deflect. The inner side of handle 16 is fixedly connected to the outside of backrest 14 so that handle 16 and backrest 14 deflect synchronously.

[0037] Working principle: When using this device, the lifting and lowering of the backrest 14 is controlled by the handbrake 17 on the handle 16. When the user presses down on the handbrake 17, under the connection of the fixed sleeve 24, the steel cable pulls the pressure plate 23 to deflect, pressing the trigger pin at the output end of the telescopic rod 20. At this time, the telescopic rod 20 retracts. Under the support of the support block 18 and the connection of the bolt and nut 22, the backrest 14 begins to move downward, which can realize the downward adjustment of the backrest 14, allowing the patient to lie flat, but not to lie flat 180 degrees. Conversely, the wheelchair backrest 14 can be adjusted downward. The upward movement allows the patient to sit up. Simultaneously, the patient can press the third handbrake 25, which, through the switching lever 26, causes the two steel cables output by the lever 26 to simultaneously pull the pressure plates 23 on both sides, thus adjusting the backrest 14. The extension section 15 on the wheelchair backrest 14 can be detached. Furthermore, directly below the armrests 3 on both sides, there is a first handbrake 13 controlling the raising and lowering of the footrests 5, allowing the patient to easily control the height of the footrests 5. When using the wheelchair, the patient controls the movement of the footrests 5 by pressing the first handbrake 13. When the patient's legs are at a 90-degree angle, pressing the first handbrake 13... With the fixed sleeve 12 connected, the steel wire pulls the pressure plate 11, causing the pressure plate 11 to press the trigger pin at the output end of the telescopic rod 8, extending the telescopic rod 8. Under the connection of bolt and nut 10, this pushes the connecting block 9 to generate a counter-force. Through the connection of bolt and nut 6 and the protection of washer 7, the telescopic rod 8 drives the footrest 5 to deflect, allowing the legs to move upwards and achieve a flat position. When the legs are at 180 degrees, pressing the handbrake 13 retracts the telescopic rod 8, allowing the footrest 5 to return to its folded position. The handbrake 13 can also be used to stop the footrest 5 at any time. The wheelchair can be positioned at any angle. When using the handbrake 13, it needs to be pressed continuously to ensure the operation of the footrest 5. Releasing the handbrake 13 will stop the wheelchair. The armrests 3 on both sides of the wheelchair can be disassembled and installed to facilitate the use of the wheelchair by the patient. The armrests 3 are connected to the frame 1 by the sliding frame 2 and the manual bolt 4. Rotating the manual bolt 4 can complete the disassembly and installation of the armrests 3. When installing the armrests 3, the armrests 3 need to be inserted into the sliding frame 2 and then the manual bolt 4 is rotated to complete the installation. Disassembly is the reverse. The operation is simple and convenient and can be completed by one person, saving time and effort.

[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A wheelchair facilitating adjustment of the straight leg raise while lying on the back, comprising a frame (1), characterized in that: The frame (1) is fixedly connected with slide frames (2) on both sides, the slide frames (2) are slidably connected with handrails (3) inside, the slide frames (2) are threadedly connected with manual bolts (4) inside, the frame (1) is rotatably connected with two foot supports (5) on the front side, the foot supports (5) are rotatably connected with bolt nuts (6) inside, the bolt nuts (6) are rotatably connected with gaskets (7) on both sides, the bolt nuts (6) are rotatably connected with telescopic rods (8) on the inner side, the telescopic rods (8) are fixedly connected with connecting blocks (9) on the output end, the connecting blocks (9) are rotatably connected with bolt nuts (10) inside, the connecting blocks (9) are rotatably connected with pressing plates (11) inside, the pressing plates (11) are fixedly connected with fixed sleeves (12) outside, the handrails (3) are provided with hand brake assemblies (1) on the bottom, the rear side of the hand brake assemblies (1) is penetrated by a steel wire through the fixed sleeves (12) and is clamped in the pressing plates (11) inside, the rear side of the frame (1) is rotatably connected with backrests (14), the top of the backrests (14) is slidably connected with extension joints (15), the rear side of the frame (1) is provided with adjusting assemblies, and the adjusting assemblies are used for adjusting the angle of the backrests (14).

2. The wheelchair of claim 1, wherein: The adjusting assemblies comprise two handles (16) and a hand brake (25), the handles (16) are rotatably connected on the rear side of the frame (1), the handles (16) are provided with hand brake assemblies (2) on the bottom, the inner side of the frame (1) is fixedly connected with two supporting blocks (18), the supporting blocks (18) are rotatably connected with bolt nuts (19) inside, the bolt nuts (19) are rotatably connected with telescopic rods (20) in the middle, the telescopic rods (20) are fixedly connected with connecting blocks (21) on the output end, the connecting blocks (21) are rotatably connected with bolt nuts (22) inside, the connecting blocks (21) are rotatably connected with pressing plates (23) inside, the bottom of the connecting blocks (21) is fixedly connected with two fixed sleeves (24), the front side of the hand brake assemblies (2) is penetrated by a steel wire through the front side of the fixed sleeves (24) and is clamped in the pressing plates (23) inside, the top of the hand brake (25) is fixedly connected on the bottom of the left handrail (3), the rear side of the hand brake (25) is fixedly connected with branch rods (26) through a steel wire, the output end of the branch rods (26) is penetrated by two steel wires through the rear side of the two fixed sleeves (24) and is clamped in the two pressing plates (23) inside.

3. The wheelchair of claim 1, wherein: The hand brake assemblies (1) comprise two hand brakes (13), and the top of the hand brakes (13) is fixedly connected on the bottom of the handrails (3).

4. The wheelchair of claim 2, wherein: The hand brake assemblies (2) comprise two hand brakes (17), and the top of the hand brakes (17) is fixedly connected on the rear side of the handles (16).

5. The wheelchair of claim 1, wherein: The outer side of the bolt nuts (10) is rotatably connected on the bottom of the frame (1), and the inner side of the manual bolt (4) and the outer side of the handrail (3) abut.

6. The wheelchair of claim 1, wherein: The inner side of the gasket (7) is rotatably connected on the outer side of the telescopic rod (8).

7. The wheelchair of claim 1, wherein: The inner side of the gasket (7) and the outer side of the foot support (5) abut.

8. The wheelchair of claim 2, wherein: The bolt nut four (22) is externally connected to the back of the backrest (14), and the inside of the handle (16) is fixedly connected to the outside of the backrest (14).

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