Wheelchair with self-balancing structure

Abstract

This utility model discloses a wheelchair with a self-balancing structure, relating to the field of wheelchair technology. It includes a support rod with large wheels rotatably mounted on both sides. A fixed plate is fixedly connected to the top surface of the support rod, and two first fixed brackets are fixedly connected to one side of the top surface of the fixed plate. A seat cushion is mounted on the top surface of the fixed plate, and one side of the seat cushion is rotatably connected to the two first fixed brackets. A connecting rod is fixedly connected to one side of the support rod, and a shock-absorbing bracket is rotatably connected to the end of the connecting rod. Small wheels are mounted between the bottom of the shock-absorbing brackets. A second fixed bracket is fixedly connected to the top surface of the connecting rod, and an electric push rod is rotatably connected between the second fixed brackets. In this utility model, sensors can detect the tilt angle of the wheelchair in real time. Through the cooperation of the sensors, electric push rods, and other components, the angle of the seat cushion can be adjusted in real time to ensure that the seat cushion remains level with the ground, preventing the user from slipping or losing balance due to wheelchair tilting, thus enhancing the safety of wheelchair use.

Description

Technical Field

[0001] This utility model relates to the field of wheelchair technology, and in particular to a wheelchair with a self-balancing structure. Background Technology

[0002] A wheelchair is an assistive mobile device designed for people with limited mobility (such as people with limb disabilities, the elderly, and those recovering from surgery). Its core function is to help users move independently through manual or power-driven means, thereby compensating for their lack of mobility and improving their independence and range of activities.

[0003] Existing wheelchairs typically have a fixed seat angle, making it impossible for the seat to remain level with the ground. This poses a risk of users slipping or losing balance due to the wheelchair tilting, reducing the safety of wheelchair use.

[0004] Therefore, it is necessary to propose a wheelchair with a self-balancing structure to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a wheelchair with a self-balancing structure to solve the problem that the angle of the seat is fixed, the seat cannot be kept horizontal with the ground, and the user is at risk of slipping or losing balance due to the tilt of the wheelchair, which reduces the safety of wheelchair riding.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a wheelchair with a self-balancing structure, including a support rod, large wheels rotatably arranged on both sides of the support rod, a fixed plate fixedly connected to the top surface of the support rod, two first fixed frames fixedly connected to one side of the top surface of the fixed plate, a seat cushion plate provided on the top surface of the fixed plate, and one side of the seat cushion plate rotatably connected to the two first fixed frames; A connecting rod is fixedly connected to one side of the support rod, and a shock-absorbing bracket is rotatably connected to the end of the connecting rod. Small wheels are provided between the bottoms of the shock-absorbing brackets. A second fixed frame is fixedly connected to the top surface of the connecting rod, and an electric push rod is rotatably connected between the second fixed frames. A third fixed frame is fixedly connected to the bottom surface of the seat cushion. A square opening is provided through one side of the fixed plate, and the piston rod end of the electric push rod passes through the square opening and is rotatably connected to the third fixed frame.

[0007] Preferably, a sensor is fixedly connected to one side of the bottom surface of the fixing plate.

[0008] Preferably, a first inclined rod is fixedly connected to one side of the bottom surface of the fixed plate, a second inclined rod is slidably connected to the bottom of the first inclined rod, foot pedals are fixedly installed on both sides of the second inclined rod, and the connecting rod passes through the top of the first inclined rod.

[0009] Preferably, the second inclined rod has multiple through holes, and a threaded rod is provided on one side of the first inclined rod. The threaded rod passes through any of the through holes and is threadedly connected to the first inclined rod.

[0010] Preferably, side plates are fixedly connected to both sides of the top surface of the fixed plate, and a brake structure is installed at the bottom of one side of the side plate.

[0011] Preferably, a backrest is installed on the top surface of the support rod, and push handles are fixedly connected to both sides of the backrest.

[0012] The technical effects and advantages of this utility model are as follows: In this invention, the sensor can detect the tilt angle of the wheelchair in real time. Through the cooperation of the sensor, electric push rod and components, the angle of the seat can be adjusted in real time to ensure that the seat remains level with the ground, thereby preventing the user from slipping or losing balance due to the tilt of the wheelchair and enhancing the safety of wheelchair riding. In this invention, the connecting rod, shock-absorbing bracket, and small wheels make the wheelchair easy to steer and operate in narrow spaces. The shock-absorbing bracket provides shock absorption during wheelchair movement, reducing the impact of the road surface on the wheelchair, ensuring better contact between the wheelchair and the road surface, and improving riding comfort. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0015] Figure 3 This utility model Figure 2 Enlarged diagram of point A in the middle.

[0016] In the diagram: 1. Support rod; 11. Fixing plate; 12. First fixing frame; 13. Seat cushion; 14. Square opening; 15. Large wheel; 2. Connecting rod; 21. Shock absorber bracket; 22. Small wheel; 3. Second mounting bracket; 31. Electric push rod; 32. Third mounting bracket; 33. Sensor; 4. First tilting rod; 41. Second tilting rod; 42. Foot pedal; 43. Threaded rod; 44. Through hole; 5. Side panel; 51. Brake structure; 52. Backrest; 53. Push handle. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, embodiments of this utility model, and should not be construed as limiting this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. In the description of this utility model, it should be understood that the terminology used is for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0018] This utility model provides, for example Figures 1-3 The wheelchair shown includes a support rod 1, with large wheels 15 rotatably mounted on both sides of the support rod 1. A fixing plate 11 is fixedly connected to the top surface of the support rod 1, and two first fixing frames 12 are fixedly connected to one side of the top surface of the fixing plate 11. A seat cushion 13 is mounted on the top surface of the fixing plate 11, and one side of the seat cushion 13 is rotatably connected to the two first fixing frames 12. The large wheels 15 are drive wheels, and the angle of the seat cushion 13 can be adjusted according to road conditions. When adjusting, the seat cushion 13 is rotated, and the seat cushion 13 rotates along the first fixing frames 12, thereby keeping the user level with the road surface, ensuring the stability of the user's center of gravity, and reducing the risk of falling.

[0019] Furthermore, a connecting rod 2 is fixedly connected to one side of the support rod 1, and a shock-absorbing bracket 21 is rotatably connected to the end of the connecting rod 2. Small wheels 22 are provided between the bottoms of the shock-absorbing brackets 21. A second fixed frame 3 is fixedly connected to the top surface of the connecting rod 2, and an electric push rod 31 is rotatably connected between the second fixed frames 3. A third fixed frame 32 is fixedly connected to the bottom surface of the seat cushion 13. A square opening 14 is provided through one side of the fixed plate 11. The piston rod end of the electric push rod 31 passes through the square opening 14 and is rotatably connected to the third fixed frame 32. During adjustment, the electric push rod 31 is opened, and the electric push rod 31 drives the third fixed frame 32 to rise or fall through the piston rod. While the piston rod is raising or lowering the third fixed frame 32, it also rotates on it. The bottom of the electric push rod 31 rotates on the second fixed frame 3. When encountering uneven road surfaces, the shock-absorbing bracket 21 can absorb the impact energy transmitted by the small wheels 22, reduce the transmission of vibration to the device, and reduce bumps.

[0020] It should be noted that a sensor 33 is fixedly connected to one side of the bottom surface of the fixed plate 11. The sensor 33 can detect the tilt angle of the wheelchair in real time and then transmit the road conditions to the electric push rod 31 in real time, so that the electric push rod 31 can adjust the seat plate 13 according to the road conditions. The sensor 33 can be a gyroscope, accelerometer, tilt sensor or other structures, and the specific structure is not limited. The sensor 33 transmits the road data to the controller, which is a conventional CPU controller, and will not be described in detail here. The controller transmits the data to the electric push rod 31 to complete the subsequent adjustment of the seat plate 13.

[0021] In this invention, sensor 33 can detect the tilt angle of the wheelchair in real time. Through the cooperation of sensor 33, electric push rod 31 and other components, the angle of seat 13 can be adjusted in real time to ensure that seat 13 is always level with the ground, thereby preventing the user from slipping or losing balance due to the tilt of the wheelchair and enhancing the safety of wheelchair use.

[0022] In this utility model, the connecting rod 2, the shock-absorbing bracket 21, and the small wheel 22 make the overall steering of the wheelchair easy and convenient to operate in narrow spaces. The shock-absorbing bracket 21 provides shock absorption during the movement of the wheelchair, reducing the impact of the road surface on the wheelchair, ensuring that the wheelchair fits better with the road surface, and improving the comfort of riding.

[0023] In this utility model, a first tilting rod 4 is fixedly connected to one side of the bottom surface of the fixed plate 11, and a second tilting rod 41 is slidably connected to the bottom of the first tilting rod 4. Foot pedals 42 are fixedly installed on both sides of the second tilting rod 41, and a connecting rod 2 passes through the top of the first tilting rod 4. The device can adjust the height of the foot pedals 42 according to the user's height. When adjusting, the second tilting rod 41 is moved and slides on the first tilting rod 4, which is convenient for users of different heights.

[0024] It should be noted that the second tilting rod 41 has multiple through holes 44, and the first tilting rod 4 has a threaded rod 43 on one side. The threaded rod 43 passes through any of the through holes 44 and is threadedly connected to the first tilting rod 4. After adjustment, the threaded rod 43 is used to pass through the through holes 44 to fix the second tilting rod 41 and the first tilting rod 4.

[0025] In this utility model, side plates 5 are fixedly connected to both sides of the top surface of the fixed plate 11, and a brake structure 51 is installed at the bottom of one side of the side plate 5. The brake structure 51 is a linkage structure brake. The brake pads are made to contact the large wheel 15 through the linkage of the linkage, thereby completing the braking. The brake structure 51 is a conventional technology in the prior art, and will not be described in detail here. The side plate 5 is a limiting and blocking structure.

[0026] It should be noted that a backrest 52 is installed on the top surface of the support rod 1, and push handles 53 are fixedly connected to both sides of the backrest 52. Users can push the device with the push handles 53 for convenient use. The backrest 52 is made of memory foam material and has an adjustable structure at the installation point between the backrest 52 and the support rod 1. The angle of the backrest 52 can be adjusted by the angle adjustment structure, which allows users to adjust it according to their usage habits. The above is a mature technology in the prior art and will not be described in detail here.

Claims

1. A wheelchair with a self-balancing structure, comprising a support rod (1), characterized in that: The support rod (1) is rotatably provided with large wheels (15) on both sides. The top surface of the support rod (1) is fixedly connected to a fixing plate (11). Two first fixing frames (12) are fixedly connected to one side of the top surface of the fixing plate (11). A seat cushion (13) is provided on the top surface of the fixing plate (11). One side of the seat cushion (13) is rotatably connected to the two first fixing frames (12). A connecting rod (2) is fixedly connected to one side of the support rod (1). A shock-absorbing bracket (21) is rotatably connected to the end of the connecting rod (2). Small wheels (22) are provided between the bottoms of the shock-absorbing brackets (21). A second fixed frame (3) is fixedly connected to the top surface of the connecting rod (2). An electric push rod (31) is rotatably connected between the second fixed frames (3). A third fixed frame (32) is fixedly connected to the bottom surface of the seat cushion (13). A square opening (14) is provided through one side of the fixed plate (11). The piston rod end of the electric push rod (31) passes through the square opening (14) and is rotatably connected to the third fixed frame (32).

2. A wheelchair with a self-balancing structure according to claim 1, characterized in that: A sensor (33) is fixedly connected to one side of the bottom surface of the fixing plate (11).

3. A wheelchair with a self-balancing structure according to claim 1, characterized in that: A first inclined rod (4) is fixedly connected to one side of the bottom surface of the fixed plate (11), and a second inclined rod (41) is slidably connected to the bottom of the first inclined rod (4). Foot pedals (42) are fixedly installed on both sides of the second inclined rod (41), and the connecting rod (2) passes through the top of the first inclined rod (4).

4. A wheelchair with a self-balancing structure according to claim 3, characterized in that: The second inclined rod (41) has multiple through holes (44) through it, and the first inclined rod (4) has a threaded rod (43) on one side. The threaded rod (43) passes through any through hole (44) and is threadedly connected to the first inclined rod (4).

5. A wheelchair with a self-balancing structure according to claim 1, characterized in that: Side plates (5) are fixedly connected to both sides of the top surface of the fixed plate (11), and a brake structure (51) is installed at the bottom of one side of the side plate (5).

6. A wheelchair with a self-balancing structure according to claim 1, characterized in that: A backrest (52) is installed on the top surface of the support rod (1), and push handles (53) are fixedly connected to both sides of the backrest (52).

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