Rear wheel steering reset mechanism of balance car and electric scooter

Abstract

The invention discloses a balance car rear wheel steering reset mechanism and an electric scooter, and relates to the technical field of vehicles. The middle fulcrum support is arranged to be hinged to the center mechanism, the center mechanism comprises the base, the center shaft, the first hinge column and the second hinge column, the center shaft is vertically connected between the two horizontal cantilevers of the middle fulcrum support, and the base is rotatably connected with the center shaft; the first hinge column and the second hinge column located on the two sides of the base are hinged to the first cantilever and the second cantilever through the first fisheye bearing and the second fisheye bearing respectively, the center mechanism is small in size, and the balance car rear wheel steering reset mechanism can be installed in a limited space. And when the stress of the first cantilever and the stress of the second cantilever in the vertical direction are different, the rubber ring is stressed to deform through slight deviation of the central shaft, so that stress buffering is realized, the horizontal height of the first cantilever and the horizontal height of the second cantilever are kept consistent, the suspension condition of rear wheels is reduced, and the stability of the vehicle is improved.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a rear wheel steering reset mechanism for a balancing vehicle and an electric scooter. Background Art

[0002] With the development of electric scooters, three-wheeled vehicles have emerged, based on two-wheeled vehicles, offering a more stable riding experience. For a good riding experience on a three-wheeled vehicle, the most important thing is the design of the steering mechanism. Existing steering mechanisms on the market are divided into two types: cantilever steering and suspension steering. However, in both cantilever and suspension steering, a highly flexible central component is required to ensure the coordinated action of the two wheels during steering. This results in the product being unable to achieve self-balancing when parked, requiring the use of a kickstand. Existing technology often incorporates one or more dampers to help the central component reset after operation. The installation of the dampers requires a large amount of space, making this structure unsuitable for use in limited spaces. Currently, CN120080939A discloses a relatively small rear-wheel steering adjustment mechanism. However, the angle adjustment plate therein, connected to the central fulcrum bracket via the fulcrum shaft, only enables left and right steering. The height of the left and right rear wheels cannot be adjusted, and buffering to accommodate the different heights of the left and right wheels is not possible, resulting in the rear wheel being suspended in the air, which can easily damage the vehicle. Summary of the Invention

[0003] The embodiments of the present application provide a rear-wheel steering reset mechanism for a balancing vehicle and an electric scooter, which can solve the technical problem that the current rear-wheel steering mechanism of a tricycle is often equipped with one or more dampers to help the central parts reset after work. The installation of the damper requires a large space, resulting in the rear-wheel steering mechanism of the tricycle occupying a large space and being difficult to install in a limited space. The existing rear-wheel steering adjustment mechanism is relatively small and cannot achieve buffering of different heights of the left and right wheels, resulting in the rear wheel being suspended in the air, which is easy to damage the vehicle.

[0004] The embodiment of the present application provides a rear wheel steering reset mechanism for a self-balancing vehicle, comprising:

[0005] a first cantilever, wherein the outer side of the rear end of the first cantilever is suitable for connecting to the first rear wheel motor, and a first rotating shaft is provided on the top of the first cantilever;

[0006] a second cantilever, wherein the outer side of the rear end of the second cantilever is suitable for connecting to the second rear wheel motor, and a second rotating shaft is provided on the top of the second cantilever;

[0007] a first vertical shaft connected between a front end of the first cantilever and a front end of the second cantilever;

[0008] a central fulcrum bracket, wherein the front end of the central fulcrum bracket is rotatably connected to the first vertical axis, and the rear end of the central fulcrum bracket is provided with two horizontal cantilevers;

[0009] A central mechanism includes a base, a central axis, a first hinge column, a second hinge column, a top bearing, a bottom bearing, and a rubber ring. A central hole is provided in the middle of the base. The central axis is rotatably provided in the central hole. The central axis is vertically connected between the two horizontal cantilevers. The first hinge column and the second hinge column are vertically connected between the two horizontal cantilevers. The first hinge column and the second hinge column are respectively located on both sides of the central axis. The top bearing and the bottom bearing are respectively provided at both ends of the central axis. The rubber ring is sleeved on the central axis and is located between the top bearing and the bottom bearing.

[0010] a first fisheye bearing rotatably connected to the first rotating shaft, wherein a fisheye joint of the first fisheye bearing is rotatably connected to the first hinge column;

[0011] a second fisheye bearing rotatably connected to the second rotating shaft, a fisheye joint of the second fisheye bearing rotatably connected to the second hinge column;

[0012] When the first cantilever and the second cantilever are subjected to different forces in the vertical direction, the first fisheye bearing is driven by the first cantilever, and the second fisheye bearing is driven by the second cantilever, stretching the central mechanism to rotate along the central axis relative to the middle fulcrum bracket, and the rubber ring is deformed under the force, and stress buffering is achieved under the limiting action of the top bearing and the bottom bearing, so that the horizontal heights of the first cantilever and the second cantilever are kept consistent; when the first cantilever and the second cantilever are subjected to the same forces in the vertical direction, the rubber ring is elastically restored.

[0013] Furthermore, the outer rings of the top bearing and the bottom bearing are interference fit with the inner side wall of the center hole, and the inner rings of the top bearing and the bottom bearing are interference fit with the center shaft.

[0014] Furthermore, the ends of the central shaft extending beyond the top bearing and the bottom bearing are provided with anti-rotation planes, and the two horizontal cantilevers are provided with anti-rotation grooves toward the two ends of the central shaft, and the two end portions of the central shaft are clamped in the anti-rotation grooves, and the anti-rotation planes are in contact with the anti-rotation grooves.

[0015] Furthermore, the base is provided with a first support plate and a second support plate arranged in parallel, the first support plate and the second support plate have the same shape, and a first hinge hole and a second hinge hole are respectively provided on both sides of the first support plate and the second support plate, and the two ends of the first hinge column are installed on the first hinge holes on the first support plate and the second support plate, and the two ends of the second hinge column are installed on the second hinge holes on the first support plate and the second support plate.

[0016] Furthermore, a first mounting hole is provided at the front end of the first cantilever, a second mounting hole is provided at the front end of the second cantilever, and both ends of the first vertical axis are fixed in the first mounting hole and the second mounting hole respectively.

[0017] Furthermore, a second vertical axis is provided on the top surface of the middle fulcrum bracket, the second vertical axis is arranged parallel to the first vertical axis, and the second vertical axis is used to connect a shock absorber.

[0018] The present application also provides an electric scooter, which includes the rear wheel steering reset mechanism of the balance scooter described above.

[0019] Furthermore, the electric scooter further includes a first rear wheel motor and a second rear wheel motor, wherein the first rear wheel motor and the second rear wheel motor are respectively connected to the rear end outer side of the rear wheel steering reset mechanism of the balancing vehicle.

[0020] Furthermore, the electric scooter also includes a shock absorber, which is connected to the top of the rear wheel steering reset mechanism of the balancing vehicle.

[0021] The embodiments of the present application provide a rear wheel steering reset mechanism for a balance vehicle and an electric scooter, wherein the rear wheel steering reset mechanism for the balance vehicle includes a first cantilever, a second cantilever, a first vertical axis, a middle fulcrum bracket, a central mechanism, a first fisheye bearing and a second fisheye bearing, which are hinged to the central mechanism by setting the middle fulcrum bracket. The central mechanism includes a base, a central axis, a first hinge column and a second hinge column. The central axis is vertically connected between the two horizontal cantilevers of the middle fulcrum bracket. The base is rotatably connected to the central axis. The first hinge column and the second hinge column located on both sides of the base are respectively hinged to the first cantilever and the second cantilever through the first fisheye bearing and the second fisheye bearing. The central mechanism is small in size, and the rear wheel steering reset mechanism of the balance vehicle can be installed in a limited space. Moreover, when the first cantilever and the second cantilever are subjected to different forces in the vertical direction, the center axis can be slightly deviated, and the rubber ring can be deformed under the force, thereby achieving stress buffering and keeping the horizontal heights of the first cantilever and the second cantilever consistent; when the first cantilever and the second cantilever are subjected to the same forces in the vertical direction, the rubber ring elastically returns to its original position, reducing the rear wheel overhang and improving vehicle stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The following detailed description of the specific embodiments of the present application in conjunction with the accompanying drawings will make the technical solutions and other beneficial effects of the present application apparent.

[0023] Figure 1 A schematic diagram of the structure of the rear wheel steering reset mechanism of a balancing vehicle provided in an embodiment of the present application;

[0024] Figure 2 A rear view of the rear wheel steering reset mechanism of the balancing vehicle provided by an embodiment of the present application in use;

[0025] Figure 3 A schematic diagram of the structure of the rear wheel steering reset mechanism of the self-balancing vehicle provided in an embodiment of the present application in use;

[0026] Figure 4 A schematic diagram of the structure of the middle fulcrum bracket provided in an embodiment of the present application;

[0027] Figure 5 A schematic diagram of the structure of the central mechanism provided in an embodiment of the present application;

[0028] Figure 6 An exploded diagram of the central mechanism provided in an embodiment of the present application;

[0029] Figure 7 A schematic diagram of the force transmission principle of the rear wheel steering reset mechanism of the balancing vehicle provided in an embodiment of the present application.

[0030] The symbols in the figure are as follows:

[0031] The rear wheel steering reset mechanism 10 of the balancing vehicle, the first cantilever 1, the first rotating shaft 11, the first mounting hole 12, the second cantilever 2, the second rotating shaft 21, the second mounting hole 22, the first vertical axis 3, the middle fulcrum bracket 4, the horizontal cantilever 41, the anti-rotation groove 411, the second vertical axis 42, the central mechanism 5, the base 51, the center hole 511, the first hinge hole 512, the second hinge hole 513, the first support plate 514, the second support plate 515, the center axis 52, the anti-rotation plane 521, the first hinge column 53, the second hinge column 54, the top bearing 55, the bottom bearing 56, the rubber ring 57, the first fisheye bearing 6, the second fisheye bearing 7, the first rear wheel motor 20, the second rear wheel motor 30, and the shock absorber 40. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0033] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application 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, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0034] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, electrical connections, or mutual communication; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0035] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 As shown, an embodiment of the present application provides a rear wheel steering reset mechanism 10 for a balancing vehicle, comprising: a first cantilever 1, a second cantilever 2, a first vertical axis 3, a middle fulcrum bracket 4, a central mechanism 5, a first fisheye bearing 6 and a second fisheye bearing 7.

[0036] Among them, the outer side of the rear end of the first cantilever 1 is suitable for connecting to the first rear wheel motor 20, and the first rotating shaft 11 is set at the top of the first cantilever 1; the outer side of the rear end of the second cantilever 2 is suitable for connecting to the second rear wheel motor 30, and the second rotating shaft 21 is set at the top of the second cantilever 2; the first vertical axis 3 is connected between the front end of the first cantilever 1 and the front end of the second cantilever 2; the front end of the middle fulcrum bracket 4 is rotatably connected to the first vertical axis 3, and the rear end of the middle fulcrum bracket 4 is provided with two horizontal cantilevers 41; the central mechanism 5 includes a base 51, a central axis 52, a first hinge column 53, a second hinge column 54, a top bearing 55, a bottom bearing 56 and a rubber ring 57, a central hole 511 is set in the middle of the base 51, and the central axis 52 is rotatably set in the central hole 511, and the central axis 52 is It is vertically connected between the two horizontal cantilevers 41, and the first hinge column 53 and the second hinge column 54 are vertically connected between the two horizontal cantilevers 41. The first hinge column 53 and the second hinge column 54 are respectively located on both sides of the central axis 52, and the top bearing 55 and the bottom bearing 56 are respectively arranged at both ends of the central axis 52. The rubber ring 57 is sleeved on the central axis 52, and the rubber ring 57 is located between the top bearing 55 and the bottom bearing 56; the first fisheye bearing 6 is rotatably connected to the first rotating shaft 11, and the fisheye joint of the first fisheye bearing 6 is rotatably connected to the first hinge column 53; the second fisheye bearing 7 is rotatably connected to the second rotating shaft 21, and the fisheye joint of the second fisheye bearing 7 is rotatably connected to the second hinge column 54.

[0037] When the first cantilever 1 and the second cantilever 2 are subjected to different forces in the vertical direction, the first fisheye bearing 6 is driven by the first cantilever 1, and the second fisheye bearing 7 is driven by the second cantilever 2, stretching the central mechanism 5 to rotate along the central axis 52 relative to the middle fulcrum bracket 4, and the rubber ring 57 is deformed under the force, and stress buffering is achieved under the limiting action of the top bearing 55 and the bottom bearing 56, so as to keep the horizontal heights of the first cantilever 1 and the second cantilever 2 consistent; when the first cantilever 1 and the second cantilever 2 are subjected to the same forces in the vertical direction, the rubber ring 57 is elastically reset.

[0038] The central mechanism 5 in the embodiment of the present application is compact, allowing the rear wheel steering reset mechanism 10 of the self-balancing vehicle to be installed in a limited space. Furthermore, when the first cantilever 1 and the second cantilever 2 are subjected to different vertical forces, the central axis 52 can be slightly offset, causing the rubber ring 57 to deform under the force, achieving stress buffering and maintaining the first cantilever 1 and the second cantilever 2 at the same horizontal height. When the first cantilever 1 and the second cantilever 2 are subjected to the same vertical forces, the rubber ring 57 elastically resets, reducing the rear wheel from hanging in the air and improving vehicle stability.

[0039] A first hinge hole 512 and a second hinge hole 513 are respectively provided on both sides of the base 51. The center hole 511, the first hinge hole 512 and the second hinge hole 513 are arranged in a triangle. The first hinge column 53 is installed in the first hinge hole 512, and the second hinge column 54 is installed in the second hinge hole 513.

[0040] like Figure 5 、 Figure 6 As shown, the outer rings of the top bearing 55 and the bottom bearing 56 are interference fit with the inner wall of the center hole 511, and the inner rings of the top bearing 55 and the bottom bearing 56 are interference fit with the center shaft 52. It is understood that the provision of balls between the outer rings and the inner rings of the top bearing 55 and the bottom bearing 56 can achieve positional offset of the center shaft 52 on the axes of the top bearing 55 and the bottom bearing 56, which can be suitable for buffering uneven vertical force on the first cantilever 1 and the second cantilever 2.

[0041] The rubber ring 57 is made by injecting rubber, and the rubber ring 57 connects the base 51 and the central shaft 52 together. A top bearing 55 and a bottom bearing 56 are added in the middle of the central hole 511 to fix the positions of the central shaft 52 and the base 51.

[0042] like Figure 5 、 Figure 6 As shown, the ends of the two ends of the central shaft 52 extending outside the top bearing 55 and the bottom bearing 56 are provided with anti-rotation planes 521, and the two horizontal cantilevers 41 are provided with anti-rotation grooves 411 at the two ends of the central shaft 52. The two ends of the central shaft 52 are clamped in the anti-rotation grooves 411, and the anti-rotation planes 521 are in contact with the anti-rotation grooves 411. The anti-rotation planes 521 can prevent the central shaft 52 from rotating in the anti-rotation grooves 411, and prevent the central mechanism 5 from rotating. Based on the micro-motion of the central shaft 52, the rubber ring 57 is elastic and deforms when receiving external force. Under the restriction of the top bearing 55 and the bottom bearing 56, the base 51 can only rotate along the central shaft 52, and returns to its original state when no force is applied.

[0043] The operating principle of the rear wheel steering reset mechanism 10 of the balancing vehicle is as follows Figure 7 As shown, when the rear wheel steering reset mechanism 10 of the self-balancing vehicle is turning, if the first cantilever 1 is subjected to an upward force from the tire, the force of the first cantilever 1 is transmitted to the central mechanism 5 through the first fisheye bearing 6. The rubber ring 57 inside the central mechanism 5 is deformed by the force. Under the constraints of the top bearing 55 and the bottom bearing 56, the base 51 of the central mechanism 5 rotates along the central axis 52, transmitting the force to the second cantilever 2, generating a downward force, pressing down the tire to prevent it from hanging in the air. When no force is applied, the rubber ring 57 inside the central mechanism 5 recovers, completing the reset.

[0044] like Figure 5 、 Figure 6 As shown, the base 51 is provided with a first support plate 514 and a second support plate 515 arranged in parallel, the first support plate 514 and the second support plate 515 have the same shape, and the first support plate 514 and the second support plate 515 are respectively provided with a first hinge hole 512 and a second hinge hole 513 on both sides, and the two ends of the first hinge column 53 are installed on the first hinge hole 512 on the first support plate 514 and the second support plate 515, and the two ends of the second hinge column 54 are installed on the second hinge hole 513 on the first support plate 514 and the second support plate 515.

[0045] like Figure 2 As shown, a first mounting hole 12 is provided at the front end of the first cantilever 1 , a second mounting hole 22 is provided at the front end of the second cantilever 2 , and both ends of the first vertical axis 3 are fixed in the first mounting hole 12 and the second mounting hole 22 , respectively.

[0046] like Figure 2 As shown, the top surface of the middle support bracket 4 is provided with a second vertical axis 42, which is arranged parallel to the first vertical axis 3, and is used to connect a shock absorber 40. The shock absorber 40 can play a stress buffering effect.

[0047] like Figure 2 、 Figure 3 As shown, the present application also provides an electric scooter, which includes the rear wheel steering reset mechanism 10 of the balance vehicle described above.

[0048] like Figure 2 、 Figure 3 As shown, the electric scooter further includes a first rear wheel motor 20 and a second rear wheel motor 30 , and the first rear wheel motor 20 and the second rear wheel motor 30 are respectively connected to the rear end outer side of the rear wheel steering reset mechanism 10 of the balancing vehicle.

[0049] like Figure 2 、 Figure 3 As shown, the electric scooter further includes a shock absorber 40, which is connected to the top of the rear wheel steering reset mechanism 10 of the balancing vehicle. The shock absorber 40 can play a stress buffering effect.

[0050] The embodiment of the present application provides a rear wheel steering reset mechanism 10 for a balancing vehicle and an electric scooter. The rear wheel steering reset mechanism 10 for a balancing vehicle includes a first cantilever 1, a second cantilever 2, a first vertical axis 3, a middle fulcrum bracket 4, a central mechanism 5, a first fisheye bearing 6 and a second fisheye bearing 7. The middle fulcrum bracket 4 is hinged to the central mechanism 5. The central mechanism 5 includes a base 51, a central axis 52, a first hinge column 53 and a second hinge column 54. The central axis 52 is vertically connected between the two horizontal cantilevers 41 of the middle fulcrum bracket 4. The base 51 and the central axis 52 are rotatably connected. The first hinge column 53 and the second hinge column 54 on both sides of the base 51 are respectively hinged to the first cantilever 1 and the second cantilever 2 through the first fisheye bearing 6 and the second fisheye bearing 7. The central mechanism 5 is small in size, so that the rear wheel steering reset mechanism 10 of the balancing vehicle can be installed in a limited space. Moreover, when the first cantilever 1 and the second cantilever 2 are subjected to different forces in the vertical direction, the central axis 52 can be slightly deviated, and the rubber ring 57 can be deformed under the force to achieve stress buffering, thereby maintaining the horizontal height of the first cantilever 1 and the second cantilever 2 consistent; when the first cantilever 1 and the second cantilever 2 are subjected to the same forces in the vertical direction, the rubber ring 57 elastically returns to its original position, reducing the rear wheel overhang and improving vehicle stability.

[0051] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0052] The above is a detailed introduction to the rear wheel steering reset mechanism of a balancing vehicle and an electric scooter provided in the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solutions and core ideas of the present application. Those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features therein can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A rear wheel steering reset mechanism for a balancing vehicle, characterized in that: include: a first cantilever, wherein the outer side of the rear end of the first cantilever is suitable for connecting to the first rear wheel motor, and a first rotating shaft is provided on the top of the first cantilever; a second cantilever, wherein the outer side of the rear end of the second cantilever is suitable for connecting to the second rear wheel motor, and a second rotating shaft is provided on the top of the second cantilever; a first vertical shaft connected between a front end of the first cantilever and a front end of the second cantilever; a central fulcrum bracket, wherein the front end of the central fulcrum bracket is rotatably connected to the first vertical axis, and the rear end of the central fulcrum bracket is provided with two horizontal cantilevers; A central mechanism includes a base, a central axis, a first hinge column, a second hinge column, a top bearing, a bottom bearing, and a rubber ring. A central hole is provided in the middle of the base. The central axis is rotatably provided in the central hole. The central axis is vertically connected between the two horizontal cantilevers. The first hinge column and the second hinge column are vertically connected between the two horizontal cantilevers. The first hinge column and the second hinge column are respectively located on both sides of the central axis. The top bearing and the bottom bearing are respectively provided at both ends of the central axis. The rubber ring is sleeved on the central axis and is located between the top bearing and the bottom bearing. a first fisheye bearing rotatably connected to the first rotating shaft, wherein a fisheye joint of the first fisheye bearing is rotatably connected to the first hinge column; a second fisheye bearing rotatably connected to the second rotating shaft, a fisheye joint of the second fisheye bearing rotatably connected to the second hinge column; When the first cantilever and the second cantilever are subjected to different forces in the vertical direction, the first fisheye bearing is driven by the first cantilever, and the second fisheye bearing is driven by the second cantilever, stretching the central mechanism to rotate along the central axis relative to the middle fulcrum bracket, and the rubber ring is deformed under the force, and stress buffering is achieved under the limiting action of the top bearing and the bottom bearing, so that the horizontal heights of the first cantilever and the second cantilever are kept consistent; when the first cantilever and the second cantilever are subjected to the same forces in the vertical direction, the rubber ring is elastically restored.

2. The rear wheel steering reset mechanism of the self-balancing vehicle according to claim 1, characterized in that: A first hinge hole and a second hinge hole are respectively provided on both sides of the base. The center hole, the first hinge hole and the second hinge hole are arranged in a triangle. The first hinge column is installed in the first hinge hole, and the second hinge column is installed in the second hinge hole.

3. The rear wheel steering reset mechanism of the self-balancing vehicle according to claim 1, characterized in that: The outer rings of the top bearing and the bottom bearing are interference fit with the inner side wall of the center hole, and the inner rings of the top bearing and the bottom bearing are interference fit with the center shaft.

4. The rear wheel steering reset mechanism of the self-balancing vehicle according to claim 1, characterized in that: The ends of the two ends of the central shaft extending beyond the top bearing and the bottom bearing are provided with anti-rotation planes, and the two horizontal cantilevers are provided with anti-rotation grooves toward the two ends of the central shaft. The two end portions of the central shaft are clamped in the anti-rotation grooves, and the anti-rotation planes abut against the anti-rotation grooves.

5. The rear wheel steering reset mechanism of the self-balancing vehicle according to claim 1, characterized in that: The base is provided with a first support plate and a second support plate arranged in parallel, the first support plate and the second support plate have the same shape, and a first hinge hole and a second hinge hole are respectively provided on both sides of the first support plate and the second support plate, and the two ends of the first hinge column are installed on the first hinge holes on the first support plate and the second support plate, and the two ends of the second hinge column are installed on the second hinge holes on the first support plate and the second support plate.

6. The rear wheel steering reset mechanism of the self-balancing vehicle according to claim 1, characterized in that: A first mounting hole is provided at the front end of the first cantilever, a second mounting hole is provided at the front end of the second cantilever, and both ends of the first vertical axis are fixed in the first mounting hole and the second mounting hole respectively.

7. The rear wheel steering reset mechanism of the self-balancing vehicle according to claim 1, characterized in that: A second vertical axis is provided on the top surface of the middle fulcrum bracket. The second vertical axis is arranged parallel to the first vertical axis. The second vertical axis is used to connect a shock absorber.

8. An electric scooter, characterized in that: The electric scooter includes the rear wheel steering reset mechanism of the balancing vehicle according to any one of claims 1 to 7.

9. The electric scooter according to claim 8, wherein: The electric scooter further includes a first rear wheel motor and a second rear wheel motor, wherein the first rear wheel motor and the second rear wheel motor are respectively connected to the rear end outer side of the rear wheel steering reset mechanism of the balancing vehicle.

10. The electric scooter according to claim 8, wherein: The electric scooter further includes a shock absorber connected to the top end of the rear wheel steering reset mechanism of the balancing vehicle.

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