A universal vehicle

Abstract

The present invention provides a universal vehicle. The universal vehicle adopts a design in which two wheels are driven independently, and the two wheels can rotate or turn relative to each other through a connecting rotating mechanism. Furthermore, the present invention optimizes the position design between the pedal, the connecting rotating mechanism and the two wheels, which not only effectively shortens the distance between the two wheels, thereby reducing the overall volume and weight of the universal vehicle, but also realizes flexible turning in all directions. The universal vehicle of the present invention has good balance stability, and it is easier for the rider to master the balance and easy to control. It can also realize smooth and flexible turning on the spot, and can turn freely and in all directions even in narrow passages.

Description

Technical Field

[0001] The present invention relates to the field of electric balancing vehicles, and more particularly to a universal vehicle with simple operation and flexible steering. Background Art

[0002] Electric balancing scooters are a new type of transportation that can be used for transportation, leisure and entertainment. Current electric balancing scooters mainly include unicycles and tricycles. Since unicycles only have one wheel, they take up less space than tricycles, but are not easy to balance and operate, making them difficult for beginners and proficient users to use. They also cannot achieve 360° rotation on the spot, which affects the fun of use. Compared with unicycles, tricycles are easier to balance and operate, making them easier for beginners and proficient users to use. However, tricycles take up more space, are not easy to carry, and are relatively difficult to achieve rotation in narrow passages, making them inflexible. The above-mentioned problems of unicycles and tricycles have restricted the development and popularization of electric balancing scooters. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the technical defects of the existing unicycles and twisting cars, and provide a universal car, which is simple to operate, flexible in steering, occupies a small space, and organically combines the advantages of unicycles and twisting cars.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0005] Provided is a universal vehicle, comprising:

[0006] a first wheel and a second wheel, wherein the first wheel and the second wheel are symmetrically arranged and can rotate or steer independently;

[0007] a first motor and a second motor, wherein the first motor drives the first wheel to move, and the second motor drives the second wheel to move;

[0008] a first footboard and a second footboard, wherein the first footboard is connected to the first motor and controls the first motor, and the second footboard is connected to the second motor and controls the second motor;

[0009] A connecting and rotating mechanism, wherein the connecting and rotating mechanism is connected to the first motor and the second motor respectively, and can realize relative rotation between the first motor and the second motor;

[0010] An electronic control system, comprising at least one controller, a first sensor, and a second sensor; the first sensor detects a control signal of the first pedal and controls the first motor via the controller; the second sensor detects a control signal of the second pedal and controls the second motor via the controller.

[0011] The first footboard can rotate relative to the first motor, and the second footboard can rotate relative to the second motor. When using the universal vehicle, the rider's feet stand on the first footboard and the second footboard respectively. At this time, the first footboard and the second footboard are basically parallel to the ground, and the direction of the two feet standing is consistent with the direction of wheel rotation. Similar to the control method of a tricycle, by changing the center of gravity of the human body, the feet are tilted forward or backward relative to the ground, and the feet control the rotation of the first footboard and the second footboard respectively. The first sensor and the second sensor respectively detect the change in the rotation angle of the first footboard and the second footboard, and feed the signal back to the controller. The controller controls the forward or reverse rotation and the rotation speed of the first motor and the second motor according to the change in the rotation angle to realize the forward, backward and turning movement of the universal vehicle. The specific control method is as follows:

[0012] When the first footboard and the second footboard are tilted and rotated forward at the same time and at the same angle, the first motor and the second motor rotate forward at the same time, and the universal vehicle moves forward.

[0013] When the first step and the second step are simultaneously tilted and rotated backward with the same rotation angle, the first motor and the second motor are simultaneously reversed, and the universal vehicle moves backward.

[0014] When the first footrest and the second footrest are tilted and rotated forward or backward at the same time, but the rotation angles are different, the larger the rotation angle, the faster the rotation speed of the corresponding motor, and the smaller the rotation angle, the slower the rotation speed of the corresponding motor, and the universal vehicle turns toward the side with the slower rotation speed.

[0015] When the first footboard and the second footboard are tilted and rotated forward and backward respectively, the first motor and the second motor rotate forward and reverse respectively, and the universal vehicle can rotate in the reverse direction on the spot. Since the universal vehicle adopts a two-wheel design, it is relatively easy for the rider to maintain balance. The two wheels are designed to be driven independently and can achieve on-the-spot turning. On the basis of the original function, the electric balance vehicle is given new usage methods and fun.

[0016] When the first and second footboards return to a balanced state, the first and second motors stop rotating, and the universal vehicle stops moving. The balanced state generally refers to the planes of the first and second footboards being parallel to the ground. Of course, the electronic control system can also set a certain rotational position of the first and second footboards as the balanced state.

[0017] In order to reduce the space occupied by the universal vehicle, the first motor and the second motor can be respectively arranged inside the first wheel and the second wheel, using the technology of the hub motor in the prior art.

[0018] Because the universal vehicle adopts a design in which two wheels are independently driven, it is relatively easy for the rider to maintain balance and can achieve on-the-spot steering. Based on this, the first footrest and the connecting and rotating mechanism of the present invention are respectively arranged on both sides of the first wheel; and the second footrest and the connecting and rotating mechanism are respectively arranged on both sides of the second wheel.

[0019] Preferably, the first step is disposed on the outside of the first wheel, and the second step is disposed on the outside of the second wheel; the connecting rotation mechanism is disposed between the first and second wheels. The positioning of the step on the outside of the two wheels shortens the distance between the two wheels, enabling free and omnidirectional steering in narrow passages, i.e., achieving 360° rotation, and thus being referred to as a "universal vehicle."

[0020] Further preferably, the first motor is arranged inside the first wheel, the second motor is arranged inside the second wheel, and the connecting rotation mechanism is arranged between the first motor and the second motor; the first footrest and the connecting rotation mechanism are respectively located on both sides of the first motor, and the second footrest and the connecting rotation mechanism are respectively located on both sides of the second motor.

[0021] The first wheel and the second wheel are symmetrically arranged. Preferably, the first wheel and the second wheel are parallel to each other. In addition, the first wheel and the second wheel can be arranged in an eight-shaped shape, that is, the upper ends of the first wheel and the second wheel are inclined inward.

[0022] The connecting rotation mechanism enables relative rotation between the first and second motors, thereby enabling the universal vehicle to steer more smoothly. Furthermore, the first and second motors can rotate about an axis parallel to the line connecting the axles of the first and second wheels. Specifically, the axis coincides with the line connecting the axles of the first and second wheels.

[0023] The connecting and rotating mechanism can be configured in a corresponding embodiment according to the above purpose. As one embodiment, the connecting and rotating mechanism includes a first connecting portion connected to the first motor and a second connecting portion connected to the second motor, wherein the first connecting portion and the second connecting portion are relatively rotatable to enable relative rotation of the first motor and the second motor.

[0024] Furthermore, the connection and rotation mechanism further includes a connection shaft connected to the first connection part and the second connection part respectively, and the first connection part and the second connection part can rotate around the connection shaft.

[0025] To facilitate the rotation of the first and second connecting parts, the first and second connecting parts can be connected to the connecting shaft via bearings. Furthermore, a limiting component can be provided at the connecting and rotating mechanism to limit the rotation of the first and second connecting parts. The limiting components can be referenced in the prior art and are not listed here.

[0026] Furthermore, the connecting shaft of the rotating mechanism is a hollow structure, which can be used to place a controller or connect circuits.

[0027] The first and second sensors each include a gyroscope, an acceleration sensor, and a sensing switch. The sensing switch senses whether the rider is standing on the omnidirectional vehicle to turn it on or off. The controller receives detection signals from the sensing switch to control whether the first and second motors are operating. The controller also receives detection signals from the acceleration sensor and gyroscope to control whether the first and second motors change state. The first and second sensors are respectively disposed on the first and second footboards, preferably, but not limited to, below the first and second footboards.

[0028] The controller and the sensor may be connected electrically or wirelessly, that is, the first sensor and the second sensor transmit detection signals to the controller via wireless signals such as radio frequency and microwave.

[0029] The number of the controllers can be set according to actual conditions and can be one or more.

[0030] In one embodiment, the controllers are two, including a first controller connected to the first sensor and a second controller connected to the second sensor. The first controller controls the rotation and speed of the first motor based on the detection signal transmitted by the first sensor; the second controller controls the rotation and speed of the second motor based on the detection signal transmitted by the second sensor. This embodiment provides two controllers to independently control the first and second motors. The first and second controllers can be located at the first or second footrest, respectively, or at the first or second motor.

[0031] Alternatively, as another embodiment, the number of the controllers is one, and the controller is connected to the first sensor and the second sensor respectively. The controller controls the rotation and respective speeds of the first motor and the second motor according to the detection signals transmitted by the first sensor and the second sensor respectively. In this embodiment, since only one controller is used, the one controller needs to be electrically connected to the first motor and the second motor respectively. Of course, it is not ruled out that the controller controls the motors in a wireless connection manner. However, as for the electrical connection method, the connection channel connecting the first motor and the second motor can be provided externally, and the controller can be connected to the first motor and the second motor by adopting an external wiring method. In addition, as described above, the connecting shaft is provided as a hollow structure, and the connecting circuit passes through the connecting shaft. The one controller can be provided on the first footboard or the second footboard, and can also be provided on the external connecting channel or the connecting shaft.

[0032] Furthermore, the first step plate of the universal vehicle is connected to the motor shaft of the first motor and can rotate around the motor shaft of the first motor, and the second step plate of the universal vehicle is connected to the motor shaft of the second motor and can rotate around the motor shaft of the second motor.

[0033] Furthermore, for safety reasons, in order to prevent the footrest from rotating too much, a limiting component can be provided to limit the rotation range of the first footrest and the second footrest.

[0034] Furthermore, the first and second footboards of the universal vehicle are foldable structures. When the universal vehicle is not in use, the footboards can be folded to further reduce the space occupied by the universal vehicle, making it easier to carry or store.

[0035] The horizontal heights of the first and second footrests can be set according to actual conditions. They can be set at the horizontal plane where the axis connection line of the first wheel and the second wheel is located, or they can be set higher or lower than the horizontal plane where the axis connection line is located.

[0036] Compared with the prior art, the present invention has the following beneficial effects:

[0037] The universal vehicle described in the present invention adopts a design in which the two wheels are driven independently, and the two wheels can rotate or turn relative to each other through a connecting rotating mechanism. Furthermore, the present invention optimizes the position design between the footboard, the connecting rotating mechanism and the two wheels, which not only effectively shortens the distance between the two wheels, thereby reducing the overall volume and weight of the universal vehicle, but also realizes flexible turning in all directions. The universal vehicle of the present invention has good balance and stability, and is easier for the rider to master the balance and easy to control. It can also realize smooth and flexible turning on the spot, and can turn freely and in all directions even in narrow passages. In summary, the universal vehicle overcomes the common problems existing in unicycles and twisting vehicles, and adds a new and dynamic member to the field of electric balance vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 This is a structural diagram of the universal vehicle described in Example 1.

[0039] Figure 2 This is a front view of the universal vehicle described in Example 1.

[0040] Figure 3 The figure is a schematic diagram of the connection between the steering mechanism and the first motor and the second motor.

[0041] Figure 4 This is a schematic structural diagram of the universal vehicle described in Example 2.

[0042] Figure 5 Schematic diagram of the control (forward movement) of the universal vehicle.

[0043] Figure 6 Schematic diagram of the control (reverse) of the universal vehicle.

[0044] Figure 7 Schematic diagram of the control (steering) of the universal vehicle.

[0045] Figure 8 The figure is a schematic diagram of the control (on-the-spot turning) of the universal vehicle.

[0046] Figure 9 Schematic diagram of the control circuit connection relationship of the universal vehicle.

[0047] Figure 10 This is a schematic top view of the universal vehicle described in Example 3. DETAILED DESCRIPTION

[0048] The present invention will be further described below in conjunction with specific embodiments.

[0049] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting this patent.

[0050] In addition, if terms such as "first" and "second" are used for descriptive purposes only, they are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components, and cannot be understood as indicating or implying relative importance.

[0051] Example 1

[0052] like Figures 1-3 As shown, a universal vehicle includes a first wheel 100, a second wheel 200, a first motor 300, a second motor 400, a first step 500, a second step 600, a connecting and rotating mechanism 700, and an electronic control system 800.

[0053] A first wheel 100 and a second wheel 200 are arranged symmetrically and in parallel. The first wheel 100 and the second wheel 200 do not share a common axle and can rotate or steer independently. A first motor 300 drives the first wheel, and a second motor 400 drives the second wheel. The first motor 300 and the second motor 400 both include components such as motor shafts (310, 410), stators (320, 420), and rotors (330, 430).

[0054] The connecting and rotating mechanism 700 is positioned between the first and second wheels. To reduce the space occupied by the universal vehicle, the first and second motors 300 and 400 can be positioned inside the first and second wheels, respectively, using conventional in-wheel motor technology. In this case, the connecting and rotating mechanism 700 is positioned between the first and second motors and is connected to each of the first and second motors 300 and 400.

[0055] The first footrest 500 and the connecting and rotating mechanism 700 are located on either side of the first motor, respectively. The second footrest 600 and the connecting and rotating mechanism 700 are located on either side of the second motor, respectively. More specifically, the first footrest 500 is located outside the first wheel 100 and is connected to the motor shaft of the first motor and is rotatable about the motor shaft 310 of the first motor 300. The second footrest 600 is located outside the second wheel 200 and is connected to the motor shaft 410 of the second motor 400 and is rotatable about the motor shaft 410 of the second motor 400. For safety reasons, to prevent the footrests from rotating excessively, limiters may be provided to restrict the rotational range of the first and second footrests 500 and 600.

[0056] The horizontal heights of the first footrest 300 and the second footrest 400 can be set according to actual conditions. In this embodiment, they can be set at the horizontal plane where the axis connecting the first wheel and the second wheel is located.

[0057] The connecting and rotating mechanism 700 includes a first connecting portion 710 connected to the first motor, a second connecting portion 720 connected to the second motor, and a connecting shaft 730 connected to each of the first and second connecting portions 710, 720. The connecting shaft is parallel to the line connecting the axes of the first and second wheels. In this embodiment, the connecting shaft coincides with the line connecting the axes of the first and second wheels 100, 200. The first and second connecting portions 710, 720 are rotatable about the connecting shaft 730, enabling relative rotation between the first and second connecting portions 710, 720, thereby enabling relative rotation between the first and second motors 300, 400.

[0058] To facilitate the rotation of the first connecting portion 710 and the second connecting portion 720, the first connecting portion 710 and the second connecting portion 720 can be connected to the connecting shaft 730 via a bearing. Furthermore, a limiting component can be provided at the connecting and rotating mechanism 700 to limit the rotation of the first connecting portion 710 and the second connecting portion 720. The limiting components can be referred to in the prior art and are not listed here.

[0059] The electronic control system 800 includes a controller 810, a first sensor 820 for detecting the rotation angle of the first footboard 500, and a second sensor 830 for detecting the rotation angle of the second footboard 600. The controller 810 is connected to the first sensor 820 and the second sensor 830, respectively. The controller controls the rotation and speed of the first motor 300 and the second motor 400 according to the detection signals transmitted by the first sensor and the second sensor, respectively, to realize the forward, backward and steering movement of the universal vehicle.

[0060] The first sensor 820 and the second sensor 830 each include a gyroscope, an accelerometer, and a sensing switch. The sensing switch senses whether the rider is standing on the universal vehicle and turns it on or off. The controller 810 receives detection signals from the sensing switch to control whether the first motor 300 and the second motor 400 are in operation. The controller 810 also receives detection signals from the accelerometer and the gyroscope to control whether the first and second motors change state. The first sensor 820 and the second sensor 830 are respectively disposed on the first footboard 500 and the second footboard 600. In this embodiment, they are disposed below the first footboard 500 and the second footboard 600.

[0061] The connection between the controller 810 and the sensor can be an electrical connection or a wireless connection, that is, the first sensor and the second sensor transmit the detection signal to the controller via wireless signals such as radio frequency and microwave.

[0062] The connection relationship between the controller 810 and other components is as follows Figure 9 As shown, the number of controllers 810 can be determined according to actual conditions and can be one or more. In this embodiment, the number of controllers is two. The two controllers are a first controller connected to the first sensor 820 and a second controller connected to the second sensor 830. The first controller controls the rotation and speed of the first motor based on the detection signal transmitted by the first sensor, and the second controller controls the rotation and speed of the second motor based on the detection signal transmitted by the second sensor. The first controller and the second controller are respectively arranged on the first footboard and the second footboard.

[0063] The specific control method of the universal car is as follows:

[0064] When the first step and the second step are tilted and rotated forward at the same time and the rotation angles are the same, the first motor and the second motor rotate forward at the same time, and the universal vehicle moves forward. Figure 5 .

[0065] When the first step and the second step are tilted and rotated backward at the same time and the rotation angles are the same, the first motor and the second motor are reversed at the same time, and the universal vehicle moves backward. Figure 6 .

[0066] When the first step and the second step are tilted and rotated forward or backward at the same time, but the rotation angles are different, the larger the rotation angle, the faster the rotation speed of the motor, and the smaller the rotation angle, the slower the rotation speed of the motor. The universal vehicle turns to the side with the slower rotation speed, such as Figure 7 .

[0067] When the first step plate and the second step plate are tilted and rotated forward and backward respectively, the first motor and the second motor rotate forward and reverse respectively, and the universal vehicle can rotate in the reverse direction at the original position, such as Figure 8 .

[0068] Example 2

[0069] This embodiment is the second embodiment of the present invention. Unlike the first embodiment, the controller in this embodiment is one. The controller 810 is electrically connected to the first sensor 820 and the second sensor 830, respectively. The controller 810 controls the rotation and speed of the first motor and the second motor according to the detection signals transmitted by the first sensor 820 and the second sensor 830, respectively.

[0070] Since only one controller 810 is used, the controller 810 needs to be electrically connected to the first motor 300 and the second motor 400 respectively. However, as for the electrical connection method, the connection lines between the controller 810 and other components can adopt an external wiring method, that is, a connection channel 900 is provided on the outside of the universal vehicle body to realize the connection between the controller 810 and the first motor 300, the second motor 400, the first sensor 820, and the second sensor 830, as shown in FIG. Figure 4 shown.

[0071] In addition, the connecting shaft 730 may be configured as a hollow structure, and the connection lines between the controller 810 and other components may pass through the hollow portion of the connecting shaft 730 .

[0072] The controller 810 may be disposed on the first footrest 500 or the second footrest 600 , or may be disposed on an external connecting passage 900 or connecting shaft 730 .

[0073] Other components and connection relationships are the same as those in Example 1.

[0074] Example 3

[0075] This embodiment is the third embodiment of the present invention. Unlike the first or second embodiments, the first and second footboards 500 and 600 are foldable. When the sled is not in use, the footboards can be folded to further reduce the space occupied by the sled, making it easier to carry or store.

[0076] Other components and connection relationships are the same as those in Example 1 or 2.

[0077] Example 4

[0078] This embodiment is the fourth embodiment of the present invention. Figure 10As shown, unlike Example 1, the connecting and rotating mechanism includes a first connecting mechanism 730 and a second connecting mechanism 740. The first connecting mechanism 730 is located between the first wheel 100 and the second wheel 200, and the first connecting mechanism 740 is connected to the first wheel and the second wheel respectively. The first connecting mechanism 740 can adopt a structure similar to the first connecting portion 710 and the second connecting portion 720 mentioned in Example 1 to ensure that the first wheel 100 and the second wheel 200 can rotate relative to each other. The first motor 300 is disposed outside the first wheel 100, and the second motor 400 is disposed outside the second wheel 200. The two ends of the second connecting mechanism 740 are respectively connected to the motor shaft of the first motor 300 and the motor shaft of the second motor 400. The second connecting mechanism is a closed loop structure, further a closed loop structure parallel to the bottom surface. The first wheel 100, the second wheel 200, the first motor 300, and the second motor 400 are all placed within the closed loop structure.

[0079] The first footboard 500 and the second footboard 600 are respectively located on both sides of the second connecting mechanism 740. The first footboard 500 is connected to the first motor 300 and the first footboard 500 can rotate around the motor shaft of the first motor 300. The second footboard 600 is connected to the second motor 400 and the second footboard 600 can rotate around the motor shaft of the second motor 300.

[0080] The controller 810, the first sensor 820, and the second sensor 830 are all disposed on the second connecting mechanism 740. The first sensor 820 is used to detect control signals from the first step 500, and the second sensor 830 is used to detect control signals from the second step 600. Similarly, in this embodiment, the number of controllers 810 can be determined based on practical circumstances and can be one or more. When there are two controllers, the two controllers 810 are connected to the first sensor 820 and the second sensor 830, respectively. The two controllers 810 control the rotation and speed of the first motor 300 and the second motor 400, respectively, based on the detection signals transmitted by the first sensor 820 and the second sensor 830, thereby enabling the universal vehicle to move forward, backward, and turn.

[0081] When the number of controllers is one, the connection lines between the controller 810 and other components such as the first sensor 820 and the second sensor 830 can be set on the second connecting mechanism 740. This design enables the components located at both ends of the second connecting mechanism to be connected in circuit.

[0082] Furthermore, the closed-loop second connecting mechanism 740 is foldable. Preferably, but not limited to, the second connecting mechanism 740 is rotated and folded with the motor shaft as the folding axis, so that the folded second connecting mechanism can be used as a handle.

[0083] Other components and connection relationships are the same as those in Example 1.

[0084] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A universal vehicle, characterized in that: include: A first wheel and a second wheel, wherein the first wheel and the second wheel are symmetrically arranged and can rotate or turn independently; a first motor and a second motor, wherein the first motor drives the first wheel to move, and the second motor drives the second wheel to move; A first footrest and a second footrest, the first footrest is connected to the motor shaft of the first motor and can rotate around the motor shaft of the first motor, the second footrest is connected to the motor shaft of the second motor and can rotate around the motor shaft of the second motor, the first footrest is connected to the first motor and controls the first motor, the second footrest is connected to the second motor and controls the second motor, the first footrest and the second footrest are arranged on the horizontal plane where the axis connecting the first wheel and the second wheel is located, and the first footrest and the second footrest are provided with a limiting component; A connecting and rotating mechanism, the connecting and rotating mechanism is located between the first motor and the second motor, and is connected to the first motor and the second motor respectively, and includes a first connecting portion connected to the first motor and a second connecting portion connected to the second motor, the first connecting portion and the second connecting portion can rotate relative to each other, so that the first motor and the second motor can rotate relative to each other, and also includes a connecting shaft connected to the first connecting portion and the second connecting portion, the first connecting portion and the second connecting portion can rotate around the connecting shaft, and the first motor and the second motor can rotate relative to each other; An electronic control system, the electronic control system comprising at least one controller, a first sensor, and a second sensor; the first sensor and the second sensor are respectively arranged at the second pedal and the second pedal; the first sensor detects a control signal of the first pedal and controls the first motor through the controller; the second sensor detects a control signal of the second pedal and controls the second motor through the controller; A controller, when the number of the controllers of the universal vehicle is one, the controller is connected to the first sensor and the second sensor respectively; when the number of the controllers of the universal vehicle is two, the controller includes a first controller and a second controller, the first sensor is connected to the first controller, and the second sensor is connected to the second controller; The connecting shaft is configured as a hollow structure, and connecting lines between the controller and other components can pass through the hollow portion of the connecting shaft.

2. The universal vehicle according to claim 1, characterized in that: The first footrest and the connecting and rotating mechanism are respectively arranged on both sides of the first wheel; the second footrest and the connecting and rotating mechanism are respectively arranged on both sides of the second wheel.

3. The universal vehicle according to claim 2, characterized in that: The first step plate is arranged at the outer side of the first wheel, and the second step plate is arranged at the outer side of the second wheel.

4. The universal vehicle according to any one of claim 3, characterized in that: The first motor is arranged inside the first wheel, and the second motor is arranged inside the second wheel; the first pedal and the connecting rotating mechanism are respectively located on both sides of the first motor, and the second pedal and the connecting rotating mechanism are respectively located on both sides of the second motor.

5. The universal vehicle according to any one of claims 1 to 4, characterized in that: The first footboard and the second footboard of the universal vehicle are foldable structures.

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