Electric wheelchair with obstacle crossing function

Abstract

The invention discloses an electric wheelchair with an obstacle crossing function, which comprises a frame type transmission base provided with a sitting component; the pair of manual obstacle crossing devices are arranged on the two sides of the frame type transmission base in the width direction; wherein the manual obstacle crossing device comprises an inclined obstacle crossing support, an obstacle crossing rotating disc, a circular rotating groove and a damping rotating ring, the obstacle crossing rotating disc is fixedly arranged on one side of the frame type transmission base, the circular rotating groove is formed in the annular side wall of the obstacle crossing rotating disc, and the damping rotating ring is arranged in the circular rotating groove; the damping rotating ring is arranged in the circular rotating groove to rotate clockwise, an inclined obstacle-crossing support is fixedly arranged on the damping rotating ring, and the inclined obstacle-crossing support obliquely extends from the damping rotating ring to the advancing direction of the electric wheel. Through the arrangement of the manual obstacle crossing device, the user can conveniently sit on the electric wheelchair to cross obstacles such as a doorsill and an outdoor road protrusion, and the use convenience of the user is improved.

Description

Technical Field

[0001] This invention relates to the field of electric wheelchair technology, and more particularly to an electric wheelchair with obstacle-crossing capabilities. Background Technology

[0002] With social development and technological advancements, electric wheelchairs have become an important tool for people with mobility impairments to improve their quality of life and enhance their mobility. However, existing electric wheelchairs often encounter challenges when facing various complex road conditions.

[0003] In daily life, people with mobility impairments may need to use electric wheelchairs in various environments, such as indoor thresholds and outdoor road bumps. Traditional electric wheelchairs often struggle to navigate these obstacles due to the small size of their steering front wheels. This not only causes significant inconvenience for users but also limits their range of motion. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0005] In view of this, the present invention provides an electric wheelchair with obstacle crossing function, wherein the setting of a manual obstacle crossing device makes it easy for users to cross obstacles such as thresholds and outdoor road protrusions while sitting in the electric wheelchair, thereby improving the convenience of use for users.

[0006] Specifically, the following technical solutions are included:

[0007] This invention provides an electric wheelchair with obstacle-crossing capability, the electric wheelchair comprising:

[0008] A frame-type transmission base, on which a riding component is provided;

[0009] Manual obstacle crossing device, a pair of the manual obstacle crossing devices are arranged on both sides of the width direction of the frame-type transmission base;

[0010] The manual obstacle crossing device includes: an inclined obstacle crossing bracket, an obstacle crossing turntable, a circular rotating groove, and a damping rotating ring. The obstacle crossing turntable is fixedly mounted on one side of the frame-type transmission base. The annular sidewall of the obstacle crossing turntable is provided with a circular rotating groove. The circular rotating groove contains a damping rotating ring, which is configured to rotate clockwise within the circular rotating groove. The inclined obstacle crossing bracket is fixedly mounted on the damping rotating ring, and the inclined obstacle crossing bracket extends inclinedly from the damping rotating ring in the direction of the electric wheel's movement.

[0011] Optionally, the manual obstacle crossing device further includes:

[0012] The U-shaped fixing frame is fixedly installed at the end of the inclined obstacle-crossing support away from the damping rotating ring. The U-shaped fixing frame includes a U-shaped groove, which is disposed away from the inclined obstacle-crossing support.

[0013] The wheel-shaped rubber block is fixedly installed inside the U-shaped groove, with at least a portion of the wheel-shaped rubber block located outside the U-shaped groove.

[0014] Optionally, the manual obstacle crossing device further includes:

[0015] A manually operated armrest is fixedly mounted on the damping rotating ring, and the manually operated armrest extends toward the seating component;

[0016] A protective cover is applied over the manually operated handrail;

[0017] A triangular reinforcement bracket is fixedly mounted on the damping rotating ring. One end of the triangular reinforcement bracket is positioned opposite to the manual operation handrail, and the other end of the triangular reinforcement bracket is fixedly connected to the inclined obstacle crossing bracket.

[0018] Optionally, the anti-slip sleeve is made of rubber, and the end of the anti-slip sleeve away from the damping rotating ring is hemispherical. The manual operation handle is configured to drive the damping rotating ring to rotate, and the damping rotating ring drives the inclined obstacle crossing bracket to rotate towards the support surface, lifting the frame transmission base near the end of the inclined obstacle crossing bracket.

[0019] Optionally, the electric wheelchair further includes a drive rear wheel and a steering front wheel. A pair of transmission devices are provided in the frame-type transmission bracket. The pair of transmission devices are respectively connected to the pair of drive rear wheels. A drive motor is provided in the direction of the transmission device toward the steering front wheel. A battery is provided on the side of the drive motor away from the transmission device. The battery is electrically connected to the drive motor.

[0020] Optionally, the riding component includes:

[0021] A seat mounting bracket is mounted on the frame-type transmission base;

[0022] The seat plate is disposed on the side of the seat mounting frame opposite to the frame-type transmission base;

[0023] A backrest is disposed at one end of the seat plate, and the backrest extends away from the end of the seat mounting frame, and the angle between the backrest and the seat plate is an obtuse angle.

[0024] Optionally, a fixed seat cushion is provided on the side of the seat plate away from the seat mounting frame, and a fixed backrest is provided on the side of the backrest facing the seat plate. The fixed seat cushion and the fixed backrest are integrally formed, and a fixed frame is provided inside the fixed seat cushion and the fixed backrest.

[0025] Optionally, the fixed backrest is provided with a first armrest and a second armrest at both ends in the width direction, the first armrest and the second armrest extending toward the seat plate, and the first armrest and the second armrest being connected to both sides of the fixed seat cushion in the width direction by a reinforcing support frame.

[0026] Optionally, a headrest is provided on the end of the fixed backrest away from the fixed seat cushion, and a wheelchair controller is provided on the first or second armrest. The end of the first and second armrests away from the fixed backrest is a semi-circular arc surface.

[0027] Optionally, the seat mounting bracket has a pedal bracket at one end away from the backrest, the pedal bracket is inclined at the end away from the seat mounting bracket, a pair of pedal brackets are located on both sides of the seat mounting bracket in the width direction, and a foot pedal is connected to the end of the pair of pedal brackets away from the seat mounting bracket.

[0028] The electric wheelchair with obstacle-crossing function provided in this embodiment of the invention includes a frame-type transmission base and manual obstacle-crossing devices disposed on both sides of the frame-type transmission base in the width direction. When the electric wheelchair needs to cross an upwardly protruding obstacle, although the rear drive wheels of the electric wheelchair can directly drive the wheelchair across the protruding obstacle, the steering front wheels are small and it is not convenient to cross the protruding obstacle by driving the rear drive wheels alone. At this time, the user can manually operate the manual obstacle-crossing device to lift the frame-type transmission base upward during the forward movement of the electric wheelchair, so that the steering front wheels are lifted accordingly, and driven forward by the rear drive wheels to cross the upwardly protruding obstacle. The manual obstacle crossing device improves the reliability of electric wheelchairs. When encountering obstacles of different heights, especially those that are difficult for the steering front wheels to cross directly, the manual obstacle crossing device can effectively assist electric wheelchairs in passing through, expanding the application scenarios of electric wheelchairs. Whether on uneven outdoor roads or in indoor environments with thresholds, it can make driving forward more convenient. Moreover, the manual obstacle crossing device is easy to operate. It only requires manually operating the armrest to drive the damping rotating ring to control the raising and lowering of the tilting obstacle crossing support. There is no complicated operation process, which helps to improve the user's sense of use and experience.

[0029] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0030] 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.

[0031] Figure 1 A perspective view of an electric wheelchair with obstacle-crossing function according to an embodiment of the present invention;

[0032] Figure 2 for Figure 1 Side view of the embodiment shown;

[0033] Figure 3 This is a schematic diagram of a frame-type transmission base according to an embodiment of the present invention;

[0034] Figure 4 This is a schematic diagram of a manual obstacle crossing device according to an embodiment of the present invention.

[0035] in, Figures 1 to 4 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0036] 1 Foot pedal, 2 Foot pedal bracket, 3 Steering front wheel, 4 Manual obstacle crossing device, 5 Frame-type transmission base, 6 Seat mounting bracket, 7 Drive rear wheel, 8 Seat board, 9 Backrest, 10 Second armrest, 11 Headrest, 12 Fixed backrest cushion, 13 Wheelchair controller, 14 First armrest, 15 Fixed seat cushion, 16 Transmission device, 17 Drive motor, 18 Battery, 19 Wheeled rubber blocks, 20 U-shaped fixing frame, 21 Inclined obstacle crossing bracket, 22 Triangular reinforcement bracket, 23 Obstacle crossing turntable, 24 Anti-slip sleeve, 25 Manual operation armrest, 26 Circular rotating groove, 27 Damped rotating ring. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] Before providing a further detailed description of the embodiments of the present invention, the directional terms used in the embodiments of the present invention, such as "upper part", "lower part" and "side part", are not intended to limit the scope of protection of the present invention.

[0039] To make the technical solutions and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0040] Figure 1 A perspective view of an electric wheelchair with obstacle-crossing function according to an embodiment of the present invention; Figure 2 for Figure 1 Side view of the embodiment shown.

[0041] like Figure 1 and Figure 2 As shown, one embodiment of the present invention provides an electric wheelchair with obstacle-crossing capability, the electric wheelchair comprising:

[0042] A frame-type transmission base 5, on which a riding component is provided;

[0043] Manual obstacle crossing device 4, a pair of manual obstacle crossing devices 4 are arranged on both sides of the width direction of the frame-type transmission base 5;

[0044] The manual obstacle crossing device 4 includes: an inclined obstacle crossing bracket 21, an obstacle crossing turntable 23, a circular rotating groove 26, and a damping rotating ring 27. The obstacle crossing turntable 23 is fixedly installed on one side of the frame-type transmission base 5. The circular rotating groove 26 is provided on the annular side wall of the obstacle crossing turntable 23. The damping rotating ring 27 is provided in the circular rotating groove 26 and is configured to rotate clockwise in the circular rotating groove 26. The inclined obstacle crossing bracket 21 is fixedly installed on the damping rotating ring 27 and extends inclinedly from the damping rotating ring 27 in the direction of the electric wheel's movement.

[0045] It should be noted that the electric wheelchair includes a frame-type transmission base 5 and manual obstacle-crossing devices 4 disposed on both sides of the frame-type transmission base 5 in the width direction. When the electric wheelchair needs to pass over an upwardly protruding obstacle, although the electric wheelchair is directly driven over the protruding obstacle by the drive rear wheels 7, the steering front wheels 3 are small and it is not convenient to pass over the protruding obstacle by driving the rear wheels 7 directly. At this time, the user can manually operate the manual obstacle-crossing device 4 to lift the frame-type transmission base 5 upward during the forward movement of the electric wheelchair, so that the steering front wheels 3 are lifted accordingly, and driven forward by the drive rear wheels 7, together passing over the upwardly protruding obstacle. The obstacle crossing device 4 improves the reliability of electric wheelchair use. When encountering obstacles of different heights, especially those that are difficult for the steering front wheels 3 to cross directly, the manual obstacle crossing device 4 can effectively assist the electric wheelchair in passing through, expanding the usage scenarios of the electric wheelchair. Whether on uneven outdoor roads or in indoor environments with thresholds, it can move forward more conveniently. Moreover, the manual obstacle crossing device 4 is easy to operate. It only requires manually operating the armrest 25 to drive the damping rotating ring 27 to rotate, thereby controlling the raising and lowering of the tilting obstacle crossing support 21. There is no complicated operation process, which helps to improve the user's sense of use and experience.

[0046] Specifically, such as Figure 1 and Figure 4 As shown, manual obstacle crossing devices 4 are provided on the left and right outer walls of the front end of the frame-type transmission base 5. The manual obstacle crossing device 4 includes an inclined obstacle crossing bracket 21, an obstacle crossing turntable 23, a circular rotating groove 26, and a damping rotating ring 27. The obstacle crossing turntable 23 is fixed to the side wall of the frame-type transmission base 5 by multiple screws. The circular outer wall of the obstacle crossing turntable 23 is provided with an inwardly recessed circular rotating groove 26. The damping rotating ring 27 is provided in the circular rotating groove 26. The damping rotating ring 27 can rotate clockwise and counterclockwise in the circular rotating groove 26. The setting of the damping rotating ring 27 not only ensures the stability of operation, but also prevents the inclined obstacle crossing bracket 21 from rotating arbitrarily when not in operation. The inclined obstacle crossing bracket 21 is welded to the front outer wall of the damping rotating ring 27. In this embodiment, when the angle between the inclined obstacle crossing bracket 21 and the electric wheelchair walking surface is 30°, the bottom end of the inclined obstacle crossing bracket 21 and the bottom outer wall of the steering front wheel 3 are on the same horizontal plane.

[0047] Figure 4 This is a schematic diagram of a manual obstacle crossing device according to an embodiment of the present invention.

[0048] In one feasible implementation, such as Figure 4 As shown, the manual obstacle crossing device 4 also includes:

[0049] U-shaped fixing bracket 20 is fixedly installed at one end of the inclined obstacle crossing support 21 away from the damping rotating ring 27. The U-shaped fixing bracket 20 includes a U-shaped groove, which is disposed away from the inclined obstacle crossing support 21.

[0050] The wheel-shaped rubber block 19 is fixedly installed inside the U-shaped groove, with at least a portion of the wheel-shaped rubber block 19 located outside the U-shaped groove.

[0051] The manual obstacle crossing device 4 also includes a wheeled rubber block 19 and a U-shaped fixing frame 20. The U-shaped fixing frame 20 is welded to the bottom end of the inclined obstacle crossing support 21. The wheeled rubber block 19 is fixed inside the U-shaped groove of the U-shaped fixing frame 20 through a fixing shaft. The bottom of the wheeled rubber block 19 is exposed outside the U-shaped fixing frame 20. The wheeled rubber block 19 is non-rotatable. The wheeled rubber block 19 contacts the walking surface during obstacle crossing, increasing the friction between the walking surface and the wheeled rubber block 19, providing stable support. Since the wheeled rubber block 19 is non-rotatable, it can ensure that it will not slide or roll when supporting the wheelchair, thus improving the safety of obstacle crossing.

[0052] In one feasible implementation, the manual obstacle-crossing device 4 further includes:

[0053] The manual operation armrest 25 is fixedly mounted on the damping rotating ring 27 and extends toward the seating component.

[0054] The protective cover 24 is placed over the manual operation handrail 25;

[0055] The triangular reinforcement bracket 22 is fixedly mounted on the damping rotating ring 27. One end of the triangular reinforcement bracket 22 is positioned opposite to the manual operation handrail 25, and the other end of the triangular reinforcement bracket 22 is fixedly connected to the inclined obstacle crossing bracket 21.

[0056] The manual obstacle crossing device 4 also includes a triangular reinforcement bracket 22, an anti-slip sleeve 24, and a manual operation handle 25. The manual operation handle 25 is welded to the top of the damping rotation ring 27, and an anti-slip sleeve 24 made of rubber is provided above the manual operation handle 25 to facilitate user control of the manual operation handle 25. The lower end of the damping rotation ring 27 is welded to the triangular reinforcement bracket 22, and the other end of the triangular reinforcement bracket 22 is welded and fixedly connected to the inclined obstacle crossing bracket 21. The triangular reinforcement bracket 22 welded to the bottom end of the damping rotation ring 27 is connected to the inclined obstacle crossing bracket 21 to form a stable triangular structure. This enhances the strength and stability of the entire manual obstacle crossing device 4, ensuring that it can withstand greater weight and stress when the front end of the wheelchair is lifted, thereby improving the convenience and safety of user use.

[0057] It should be noted that the anti-slip sleeve 24 is supported by soft rubber, and the end of the anti-slip sleeve 24 away from the damping rotating ring 27 is hemispherical. Manually operating the handle 25 can rotate the damping rotating ring 27 clockwise. Figure 2 When the inclined obstacle-crossing support 21 is in a downward vertical state (clockwise direction), it can lift the front end of the frame-type transmission base 5. When crossing an obstacle, the user holds the manual operation handle 25. Since the upper half of the manual operation handle 25 is covered with an anti-slip sleeve 24, and the anti-slip sleeve 24 is designed with soft rubber support and a hemispherical top, it can provide a good grip and anti-slip effect. The manual operation handle 25 drives the damping rotating ring 27 to rotate clockwise in the circular rotating groove 26 of the obstacle-crossing turntable 23. The rotation of the damping rotating ring 27 drives the inclined obstacle-crossing support 21 welded to it to move. By continuously operating the manual operation handle 25, the bottom end of the inclined obstacle-crossing support 21 contacts the ground, and the front end of the frame-type transmission base 5 is gradually lifted as the inclined obstacle-crossing support 21 rotates. Specifically, when the angle between the tilting obstacle-crossing bracket 21 and the walking surface is 30°, the bottom end of the tilting obstacle-crossing bracket 21 and the outer wall of the bottom end of the steering front wheel 3 are on the same horizontal plane, which is the optimal state for obstacle crossing. As the tilting obstacle-crossing bracket 21 is raised, the wheel rubber block 19 on its bottom U-shaped fixing frame 20 contacts the walking surface, providing support for the electric wheelchair. Continue to operate the manual operation armrest 25 to further raise the front end of the frame transmission base 5 of the tilting obstacle-crossing bracket 21. At this time, the steering front wheel 3 is raised, and under the thrust of the driving rear wheel 7, the electric wheelchair passes through the obstacle as a whole, thereby achieving the purpose of crossing the obstacle.

[0058] Figure 3 This is a schematic diagram of a frame-type transmission base according to an embodiment of the present invention.

[0059] In one feasible implementation, such as Figure 3 As shown, the electric wheelchair also includes a drive rear wheel 7 and a steering front wheel 3. A pair of transmission devices 16 are provided in the frame-type transmission base 5. The pair of transmission devices 16 are respectively connected to the pair of drive rear wheels 7. A drive motor 17 is provided in the direction of the transmission device 16 toward the steering front wheel 3. A battery 18 is provided on the side of the drive motor 17 away from the transmission device 16. The battery 18 is electrically connected to the drive motor 17.

[0060] The frame-type transmission base 5 has two transmission devices 16 at its rear ends. The two transmission devices 16 are respectively connected to the two drive rear wheels 7. The front end of the transmission device 16 is connected to the drive motor 17. The front end of the drive motor 17 is equipped with a battery 18. The drive motor 17 and the battery 18 are electrically connected. A fixed seat cushion 15 is fixedly installed on the upper end of the seat plate 8. A fixed back cushion 12 is installed on the front end of the backrest plate 9. The fixed seat cushion 15 and the fixed back cushion 12 are connected and fixed to each other. The fixed frame is provided inside the fixed seat cushion 15 and the fixed back cushion 12. The seat plate 8 and the backrest plate 9 provide a comfortable sitting position for the user. The fixed frame inside the fixed seat cushion 15 and the fixed back cushion 12 ensures the stability and support of the electric seat, and also ensures the comfort of the user. When using the electric wheelchair of this application, the user should first ensure that they are seated on the fixed seat 15 of the electric wheelchair, with their body comfortably resting on the fixed backrest 12, and their feet placed on the footrest 1. Then, the user should check the power display of the wheelchair controller 13 to ensure that the battery 18 has sufficient power to support the operation of the electric wheelchair. After confirming this, the user needs to start the drive motor 17 through the wheelchair controller 13. The drive motor 17 drives the transmission 16 to operate, and the transmission 16 transmits power to the drive rear wheel 7, causing the electric wheelchair to move forward. The steering front wheel 3 is responsible for steering operation. The user can control the steering angle of the steering front wheel 3 by operating the wheelchair controller 13. The drive motor 17, as a power source, obtains electrical energy through electrical connection with the battery 18. After the drive motor 17 operates, it drives the transmission 16 to work, and the transmission 16 transmits power to the drive rear wheel 7, realizing the forward and backward movement of the electric wheelchair.

[0061] In one feasible implementation, the riding component includes:

[0062] The seat mounting bracket 6 is mounted on the frame-type transmission base 5;

[0063] Seat plate 8 is located on the side of seat mounting bracket 6 away from frame-type transmission base 5;

[0064] The backrest 9 is located at one end of the seat plate 8 and extends away from the seat mounting bracket 6, and the angle between the backrest 9 and the seat plate 8 is an obtuse angle.

[0065] The frame-type transmission base 5 is equipped with a seating component, which includes a seat mounting bracket 6 mounted above the frame-type transmission base 5. A seat plate 8 is located above the seat mounting bracket 6, and a backrest 9 is located at the rear end of the seat plate 8. The upper end of the backrest 9 is tilted backward. Steering front wheels 3 are located at both ends of the front side of the bottom of the frame-type transmission base 5, and driving rear wheels 7 are located at both ends of the rear side of the bottom of the frame-type transmission base 5. This allows the user to sit on the seat plate 8 and lean against the backrest 9, improving the comfort of using the electric wheelchair.

[0066] In one feasible implementation, a fixed seat cushion 15 is provided on the side of the seat plate 8 away from the seat mounting frame 6, and a fixed backrest 12 is provided on the side of the backrest 9 facing the seat plate 8. The fixed seat cushion 15 and the fixed backrest 12 are integrally formed, and a fixed frame is provided inside the fixed seat cushion 15 and the fixed backrest 12 respectively.

[0067] The fixed backrest 12 has a first armrest 14 and a second armrest 10 at both ends in the width direction. The first armrest 14 and the second armrest 10 extend toward the seat plate 8 respectively. The first armrest 14 and the second armrest 10 are connected to both sides of the fixed seat cushion 15 in the width direction through a reinforcing support frame.

[0068] It should be noted that a first armrest 14 (left armrest) is located at the center of the left side of the fixed backrest 12, and a second armrest 10 (right armrest) is located at the center of the right side of the fixed backrest 12. The second armrest 10 and the first armrest 14 extend horizontally forward. A reinforcing support frame connects the bottom front ends of the second armrest 10 and the first armrest 14 to the left and right ends of the fixed seat cushion 15. A headrest 11 is also located at the top of the fixed backrest 12. A wheelchair controller 13 is located at the top front end of the second armrest 10. The front ends of both the second armrest 10 and the first armrest 14 are semi-circular arc-shaped. The first armrest 14 and the second armrest 10 provide support and protection for the user. The semi-circular arc-shaped design increases user comfort, and the reinforcing support frame further enhances the wheelchair's stability. The stability of the armrests 14 and 10, and the steering front wheel 3 connected to the wheelchair controller 13 to achieve steering operation. The user can send a steering signal by operating the wheelchair controller 13 to change the direction of travel of the steering front wheel 3. The left and right sides of the front end of the seat mounting frame 6 are respectively fixed with pedal brackets 2. The pair of pedal brackets 2 extend away from the seat mounting frame 6, that is, the pedal brackets 2 are also tilted. The bottom of the pair of pedal brackets 2 is fixedly connected with foot pedals 1. The foot pedals 1 are horizontally set. The pedal brackets 2 and foot pedals 1 provide a support position for the user's feet. The tilting setting of the pedal brackets 2 and the horizontal setting of the foot pedals 1 are ergonomic, so that the user's feet can be placed naturally and comfortably when using the electric wheelchair.

[0069] It should be noted that, in this application, "front" refers to the direction of forward movement, "back" refers to the direction opposite to the direction of forward movement, "left" refers to the direction to the left of the back of the electric wheelchair, "right" refers to the direction to the right of the back of the electric wheelchair, "bottom" and "bottom" refer to the end facing the walking surface of the electric wheelchair, and "top" refers to the end away from the walking surface.

[0070] This application adds a manual obstacle-crossing device 4 to the outer walls of the left and right sides of the front end of the frame-type transmission base 5 of the electric wheelchair. When the electric wheelchair needs to pass over an upwardly protruding obstacle, although the rear drive wheel 7 can pass through the protruding obstacle normally through the drive motor 17, the small size of the steering front wheel 3 makes it difficult to pass over the protruding obstacle. At this time, the user can manually operate the manual obstacle-crossing device 4 to lift the frame-type transmission base 5 upward during the forward movement of the electric wheelchair, so that the steering front wheel 3 is lifted upward and driven forward by the rear drive wheel 7 to pass over the upwardly protruding obstacle. The manual obstacle-crossing device 4 improves the efficiency of the electric wheelchair. With its excellent maneuverability, the manual obstacle crossing device 4 effectively assists electric wheelchairs in overcoming obstacles of varying heights, especially those that are difficult for the steering front wheels 3 to cross directly. This greatly expands the application scenarios of electric wheelchairs, allowing them to move more easily whether on uneven outdoor surfaces or indoor environments with obstacles such as thresholds. The manual obstacle crossing device 4 is also easy to operate. Users can simply operate the armrest 25 to rotate the damping rotating ring 27, thereby controlling the raising and lowering of the tilting obstacle crossing support 21. There is no complicated operating procedure, and even users with mobility impairments can easily complete the operation.

[0071] In this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "a plurality" refers to two or more unless otherwise expressly defined.

[0072] Other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. The invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only.

[0073] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An electric wheelchair with obstacle-crossing capability, characterized in that, The electric wheelchair includes: A frame-type transmission base, on which a riding component is provided; Manual obstacle crossing device, a pair of the manual obstacle crossing devices are arranged on both sides of the width direction of the frame-type transmission base; The manual obstacle crossing device includes: an inclined obstacle crossing bracket, an obstacle crossing turntable, a circular rotating groove, and a damping rotating ring. The obstacle crossing turntable is fixedly mounted on one side of the frame-type transmission base. The annular sidewall of the obstacle crossing turntable is provided with a circular rotating groove. The circular rotating groove contains a damping rotating ring, which is configured to rotate clockwise within the circular rotating groove. The inclined obstacle crossing bracket is fixedly mounted on the damping rotating ring, and the inclined obstacle crossing bracket extends inclinedly from the damping rotating ring in the direction of the electric wheel's movement.

2. The electric wheelchair with obstacle-crossing function according to claim 1, characterized in that, The manual obstacle crossing device also includes: The U-shaped fixing frame is fixedly installed at the end of the inclined obstacle-crossing support away from the damping rotating ring. The U-shaped fixing frame includes a U-shaped groove, which is disposed away from the inclined obstacle-crossing support. The wheel-shaped rubber block is fixedly installed inside the U-shaped groove, with at least a portion of the wheel-shaped rubber block located outside the U-shaped groove.

3. The electric wheelchair with obstacle-crossing function according to claim 2, characterized in that, The manual obstacle crossing device also includes: A manually operated armrest is fixedly mounted on the damping rotating ring, and the manually operated armrest extends toward the seating component; A protective cover is applied over the manually operated handrail; A triangular reinforcement bracket is fixedly mounted on the damping rotating ring. One end of the triangular reinforcement bracket is positioned opposite to the manual operation handrail, and the other end of the triangular reinforcement bracket is fixedly connected to the inclined obstacle crossing bracket.

4. The electric wheelchair with obstacle-crossing function according to claim 3, characterized in that, The anti-slip sleeve is made of rubber, and the end of the anti-slip sleeve away from the damping rotating ring is hemispherical. The manual operation handle is configured to drive the damping rotating ring to rotate, and the damping rotating ring drives the inclined obstacle crossing bracket to rotate towards the support surface for support, lifting the frame transmission base near the end of the inclined obstacle crossing bracket.

5. The electric wheelchair with obstacle-crossing function according to claim 1, characterized in that, The electric wheelchair also includes a drive rear wheel and a steering front wheel. A pair of transmission devices are provided in the frame-type transmission bracket. The pair of transmission devices are respectively connected to the pair of drive rear wheels. A drive motor is provided in the direction of the transmission device toward the steering front wheel. A battery is provided on the side of the drive motor away from the transmission device. The battery is electrically connected to the drive motor.

6. The electric wheelchair with obstacle-crossing function according to claim 1, characterized in that, The riding component includes: A seat mounting bracket is mounted on the frame-type transmission base; The seat plate is disposed on the side of the seat mounting frame opposite to the frame-type transmission base; A backrest is disposed at one end of the seat plate, and the backrest extends away from the end of the seat mounting frame, and the angle between the backrest and the seat plate is an obtuse angle.

7. The electric wheelchair with obstacle-crossing function according to claim 6, characterized in that, A fixed seat cushion is provided on the side of the seat plate away from the seat mounting frame, and a fixed back cushion is provided on the side of the backrest facing the seat plate. The fixed seat cushion and the fixed back cushion are integrally formed, and a fixed frame is provided inside the fixed seat cushion and the fixed back cushion respectively.

8. The electric wheelchair with obstacle-crossing function according to claim 7, characterized in that, The fixed backrest has a first armrest and a second armrest at both ends in the width direction. The first armrest and the second armrest extend toward the seat plate. The first armrest and the second armrest are connected to both sides of the fixed seat cushion in the width direction through a reinforcing support frame.

9. The electric wheelchair with obstacle-crossing function according to claim 8, characterized in that, The fixed backrest is provided with a headrest at the end away from the fixed seat cushion, and a wheelchair controller is provided on the first or second armrest. The end of the first and second armrests away from the fixed backrest is a semi-circular arc surface.

10. The electric wheelchair with obstacle-crossing function according to claim 6, characterized in that, The seat mounting bracket is provided with a pedal bracket at one end away from the backrest. The pedal bracket is inclined at the end away from the seat mounting bracket. A pair of pedal brackets are located on both sides of the seat mounting bracket in the width direction. A foot pedal is connected to the end of the pair of pedal brackets away from the seat mounting bracket.

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