A four-wheeled vehicle

Abstract

The present invention proposes a four-wheeled scooter, which includes a supporting assembly component, an active walking component, a driven walking component, a supporting control component, a riding support component and a riding limit component. The four-wheeled scooter is provided with a frame consisting of a supporting front frame and a supporting rear frame. The rear part of the supporting front frame is installed on the front part of the supporting rear frame through a plug-in structure, and a folding push rod is provided to drive the supporting front frame to extend and retract in the supporting rear frame. A riding support component consisting of a supporting front frame, a supporting rear frame, a supporting seat and a positioning connecting rod is also provided. When the supporting front frame extends and retracts in the supporting rear frame, the supporting front frame, the supporting rear frame and the supporting seat can be driven to fold or unfold by the positioning connecting rod. At the same time, a supporting control component consisting of a supporting seat body, a supporting column and a folding push rod is provided. The folding push rod drives the supporting column to fold or unfold on the supporting seat body, so that it can be automatically folded using an electric folding structure, which is easy to operate.

Description

Technical Field

[0001] The invention relates to a four-wheeled vehicle. Background Art

[0002] Patent document CN105818911B discloses a foldable electric vehicle, which is a lightweight vehicle for commuting, comprising a front wheel, a rear wheel, a battery, a front fork, a handlebar, a saddle, a saddle, and a frame. The frame includes two side panels that are opposite and symmetrical to each other, with a storage slot formed between the two side panels. The battery is installed in the storage slot between the two side panels. The rear wheel is mounted at the rear of the frame and located between the two side panels. The front fork is mounted at the front of the frame and located between the two side panels via a first rotating shaft. A front fork limiting mechanism for fixing the front fork position is installed on the front fork. The lower end of the saddle is mounted on the frame via a second rotating shaft and located between the two side panels. A saddle limiting mechanism for fixing the saddle is installed on the saddle. However, the folding operation process of this foldable electric vehicle is relatively cumbersome, and after the folding operation, it still occupies a large space, making it inconvenient to carry. Therefore, it is necessary to optimize the structure of this vehicle for commuting to overcome the above-mentioned defects. Summary of the Invention

[0003] The purpose of the present invention is to provide a four-wheeled vehicle that is easy to fold and can reduce occupied space.

[0004] The technical solution adopted by the present invention to solve its technical problems is:

[0005] A four-wheeled vehicle comprising:

[0006] A support assembly component having an installation space thereon;

[0007] An active walking assembly is installed on the supporting assembly, and the active walking assembly supports the supporting assembly and drives the supporting assembly to move;

[0008] The driven traveling assembly is mounted on the supporting assembly and corresponds to the active traveling assembly. The driven traveling assembly supports the supporting assembly and can move together with the supporting assembly and the active traveling assembly.

[0009] The support and control assembly is mounted on the support assembly assembly via an electrically foldable structure and can be folded or unfolded on the support assembly assembly. The support and control assembly supports the passenger's hands. The active travel assembly is electrically connected to the support and control assembly via a circuit. The passenger can operate and control the operating state of the active travel assembly via the support and control assembly.

[0010] A seating support assembly, which is mounted on the support assembly assembly via an electric folding structure and can be folded or unfolded on the support assembly assembly to support the body of the passenger;

[0011] The seating limit assembly is mounted on the seating support assembly via a folding structure and can be folded or unfolded together with the seating support assembly. The seating limit assembly limits the position of the passenger on the seating support assembly.

[0012] Specifically, the support assembly includes:

[0013] The supporting rear frame is formed by splicing rods, which are arranged in a horizontal row and have an installation space inside;

[0014] The supporting front frame is formed by splicing rods, and its rear part is installed on the front part of the supporting rear frame through a plug-in structure, and can be extended and retracted in the supporting rear frame. The supporting rear frame and the supporting front frame together form the vehicle frame;

[0015] The folding push rod is arranged in the transverse direction, the outer tube of the folding push rod is installed in the supporting rear frame, and the inner rod of the folding push rod is engaged with the supporting front frame. The supporting front frame is driven by the folding push rod to extend and retract in the supporting rear frame.

[0016] In one embodiment of the present invention, the folding push rod is performed by an electric push rod.

[0017] Active walking components include:

[0018] A driving wheel pair, comprising a rear axle and a pair of rear wheels, wherein the rear axle is mounted on the rear side of the bottom of the supporting rear frame, and the rear wheels are mounted on both ends of the rear axle through a rotating structure;

[0019] The drive motor is installed on the rear axle and connected to the rear wheels through a transmission structure. The drive motor drives the rear wheels to rotate.

[0020] Driven travel components include:

[0021] The driven wheelset has a front axle and a pair of front wheels. The front axle is installed on the front side of the bottom of the supporting front frame. The front wheels are installed on both ends of the front axle through a rotating structure. The rear wheels are located behind the front wheels. The frame is supported by the front wheels and the rear wheels together. When the rear wheels rotate, they can drive the frame and the front wheels to move.

[0022] Support control components include:

[0023] The support seat body is installed on the front side of the top of the support frame through a rotating structure and extends above the support frame. The front axle is connected to the support seat body through a transmission structure;

[0024] A support column is provided with a matching fork at the bottom of the support column, and the top of the support seat extends into the matching fork and is engaged by rotating the shaft, so that the support column can be folded or unfolded on the support seat. A control handle is installed on the top of the support column, which can be used to drive the front axle to deflect and drive the front wheel to steer;

[0025] The folding push rod has an outer tube installed on the support seat body, and an inner rod thereof is engaged with the support column. The folding push rod drives the support column to fold or unfold on the support seat body.

[0026] In one embodiment of the present invention, the folding push rod is performed by an electric push rod.

[0027] In one embodiment of the present invention, a control button or knob is further installed on the top of the support column. The control button or knob is electrically connected to the drive motor through a circuit, and can control the operating state of the drive motor.

[0028] The ride support components include:

[0029] The supporting front frame is mounted on the rear side of the top of the supporting rear frame through a rotating structure. The supporting front frame extends above the supporting rear frame and can be folded or unfolded on the supporting rear frame. Space for the passenger's legs to move is left between the support seat and the supporting front frame.

[0030] The supporting rear frame is mounted on the rear side of the top of the supporting rear frame through a rotating structure and is located behind the supporting front frame. It extends above the supporting rear frame and can be unfolded or folded on the supporting rear frame.

[0031] The support seat is arranged in a transverse direction, with its rear portion mounted on the top of the support rear frame through a rotating structure, and its front portion mounted on the top of the support front frame through a rotating structure. The support seat can be unfolded or folded along with the support front frame and the support rear frame, and the support seat supports the body of the passenger;

[0032] A pair of positioning links are provided, one end of each positioning link is connected to the supporting front frame through a rotating structure, and the other end extends to the supporting rear frame. A pair of avoidance slots extending laterally are provided in the supporting rear frame, and the rear part of the supporting front frame can be exposed from the avoidance slots, so that the other end of the positioning link is connected to the rear part of the supporting front frame through the rotating structure. When the supporting front frame is extended and retracted in the supporting rear frame, the supporting front frame, the supporting rear frame and the supporting seat can be driven to fold or unfold through the positioning link.

[0033] The ride restraint components include:

[0034] The limit backrest has a bottom connected to the top of the supporting rear frame through a folding frame and is located behind the supporting seat. The middle part is connected to the rear of the supporting seat through a rotating structure. When the supporting front frame, supporting rear frame and supporting seat are folded or unfolded, the limit backrest can be driven to fold or unfold. The top of the limit backrest extends above the supporting seat to limit the body of the occupant.

[0035] The advantages of the present invention are:

[0036] The four-wheeled scooter is provided with a frame consisting of a supporting front frame and a supporting rear frame, the rear part of the supporting front frame is installed on the front part of the supporting rear frame through a plug-in structure, and a folding push rod is provided between the supporting rear frame and the supporting front frame to drive the supporting front frame to extend and retract in the supporting rear frame. A riding support assembly consisting of a supporting front frame, a supporting rear frame, a supporting seat and a positioning connecting rod is also provided. When the supporting front frame extends and retracts in the supporting rear frame, the supporting front frame, the supporting rear frame and the supporting seat can be driven to fold or unfold by the positioning connecting rod, so that the limit backrest is folded or unfolded accordingly. At the same time, a support control assembly consisting of a supporting seat body, a supporting column and a folding push rod is provided, and the folding push rod drives the supporting column to fold or unfold on the supporting seat body, so that the four-wheeled scooter can be folded using an electric folding structure, occupies less space after folding, and is easy to carry. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a front structural diagram of a four-wheeled scooter with an electric folding structure proposed by the present invention;

[0038] Figure 2 This is a schematic diagram of the back structure of the four-wheeled scooter;

[0039] Figure 3 This is an exploded view of the four-wheeled mobility scooter;

[0040] Figure 4 It is a schematic diagram of the folded state of the four-wheeled scooter. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0042] like Figures 1 to 4 As shown, the four-wheeled scooter with an electric folding structure proposed by the present invention includes a supporting assembly component, an active walking component, a driven walking component, a supporting control component, a riding support component and a riding limit component. The supporting assembly component has an installation space, the active walking component is installed on the supporting assembly component, the active walking component supports the supporting assembly component and drives the supporting assembly component to move, the driven walking component is installed on the supporting assembly component and corresponds to the position of the active walking component, the driven walking component supports the supporting assembly component and can move with the supporting assembly component and the active walking component, and the supporting control component is installed on the supporting assembly component through the electric folding structure. The supporting assembly can be folded or unfolded on the supporting assembly, and the supporting control assembly supports the hands of the passenger. The active walking assembly is electrically connected to the supporting control assembly through a line, and the passenger can operate and control the operating status of the active walking assembly through the supporting control assembly. The riding support assembly is installed on the supporting assembly through an electric folding structure and can be folded or unfolded on the supporting assembly, and the riding support assembly supports the body of the passenger. The riding limiting assembly is installed on the riding support assembly through a folding structure and can be folded or unfolded together with the riding support assembly, and the riding limiting assembly limits the position of the passenger on the riding support assembly.

[0043] In Example 1, the supporting assembly components include a supporting rear frame 110, a supporting front frame 120 and a folding push rod 130. The supporting rear frame is formed by splicing rods, which are arranged horizontally and have an installation space inside. The supporting front frame is formed by splicing rods, and its rear part is installed on the front part of the supporting rear frame through a plug-in structure. It can be extended and retracted in the supporting rear frame. The supporting rear frame and the supporting front frame together constitute a vehicle frame. The folding push rod is arranged horizontally, its outer tube is installed in the supporting rear frame, and its inner rod is engaged with the supporting front frame. The folding push rod drives the supporting front frame to extend and retract in the supporting rear frame.

[0044] The active walking component includes a driving wheel pair 210 and a driving motor 220. The driving wheel pair has a rear axle and a pair of rear wheels. The rear axle is installed on the rear side of the bottom of the supporting rear frame. The rear wheels are installed on both ends of the rear axle through a rotating structure. The driving motor is installed on the rear axle and connected to the rear wheels through a transmission structure. The rear wheels are driven by the driving motor.

[0045] The driven traveling assembly includes a driven wheel pair 300, which has a front axle and a pair of front wheels. The front axle is installed on the front side of the bottom of the supporting front frame. The front wheels are installed on both ends of the front axle through a rotating structure. The rear wheels are located behind the front wheels. The frame is supported by the front wheels and the rear wheels together. When the rear wheels rotate, they can drive the frame and the front wheels to move.

[0046] The support and control assembly includes a support seat body 410, a support column 420 and a folding push rod 430. The support seat body is installed on the front side of the top of the support frame through a rotating structure and extends upward from the support frame. The front axle is connected to the support seat body through a transmission structure. A matching fork is provided at the bottom of the support column. The top of the support seat body extends into the matching fork and is engaged by a rotating shaft rod so that the support column can be folded or unfolded on the support seat body. A control handle 411 is installed on the top of the support column, which can be used to drive the front axle to deflect and drive the front wheel to steer. The outer tube of the folding push rod is installed on the support seat body, and its inner rod is engaged with the support column. The folding push rod drives the support column to fold or unfold on the support seat body.

[0047] The riding support assembly includes a supporting front frame 510, a supporting rear frame 520, a supporting seat 530 and a positioning link 540. The supporting front frame is mounted on the rear side of the top of the supporting rear frame through a rotating structure, and extends upwards to the supporting rear frame, and can be folded or unfolded on the supporting rear frame. A space for the passenger's legs to move is left between the support seat body and the supporting front frame. The supporting rear frame is mounted on the rear side of the top of the supporting rear frame through a rotating structure and is located behind the supporting front frame. It extends upwards to the supporting rear frame and can be unfolded or folded on the supporting rear frame. The supporting seat is arranged horizontally, and its rear part is mounted on the top of the supporting rear frame through a rotating structure. The front part is installed on the top of the supporting front frame through a rotating structure, and can be expanded or folded along with the supporting front frame and the supporting rear frame. The supporting seat supports the body of the occupant. A pair of positioning links are provided, one end of each positioning link is connected to the supporting front frame through a rotating structure, and the other end extends to the supporting rear frame. A pair of avoidance slots extending laterally are provided in the supporting rear frame. The rear part of the supporting front frame can be exposed from the avoidance slot, so that the other end of the positioning link is connected to the rear part of the supporting front frame through the rotating structure. When the supporting front frame is extended and retracted in the supporting rear frame, the supporting front frame, the supporting rear frame and the supporting seat can be driven to fold or expand through the positioning link.

[0048] The seating limit assembly includes a limit backrest 600, the bottom of which is connected to the top of the supporting rear frame through a folding frame 610 and is located behind the supporting seat. The middle part is connected to the rear of the supporting seat through a rotating structure. When the supporting front frame, the supporting rear frame and the supporting seat are folded or unfolded, the limit backrest can be driven to fold or unfold. The top of the limit backrest extends above the supporting seat to limit the body of the passenger.

[0049] In Example 2, the supporting assembly components include a supporting rear frame 110, a supporting front frame 120 and a folding push rod 130. The supporting rear frame is formed by splicing rods, which are arranged horizontally and have an installation space inside. The supporting front frame is formed by splicing rods, and its rear part is installed on the front part of the supporting rear frame through a plug-in structure. It can be extended and retracted in the supporting rear frame. The supporting rear frame and the supporting front frame together constitute a vehicle frame. The folding push rod is arranged horizontally, and its outer tube is installed in the supporting rear frame, and its inner rod is engaged with the supporting front frame. The folding push rod drives the supporting front frame to extend and retract in the supporting rear frame.

[0050] In this embodiment, the folding push rod is performed by an electric push rod.

[0051] The active walking component includes a driving wheel pair 210 and a driving motor 220. The driving wheel pair has a rear axle and a pair of rear wheels. The rear axle is installed on the rear side of the bottom of the supporting rear frame. The rear wheels are installed on both ends of the rear axle through a rotating structure. The driving motor is installed on the rear axle and connected to the rear wheels through a transmission structure. The rear wheels are driven by the driving motor.

[0052] The driven traveling assembly includes a driven wheel pair 300, which has a front axle and a pair of front wheels. The front axle is installed on the front side of the bottom of the supporting front frame. The front wheels are installed on both ends of the front axle through a rotating structure. The rear wheels are located behind the front wheels. The frame is supported by the front wheels and the rear wheels together. When the rear wheels rotate, they can drive the frame and the front wheels to move.

[0053] The support and control assembly includes a support seat body 410, a support column 420 and a folding push rod 430. The support seat body is installed on the front side of the top of the support frame through a rotating structure and extends upward from the support frame. The front axle is connected to the support seat body through a transmission structure. A matching fork is provided at the bottom of the support column. The top of the support seat body extends into the matching fork and is engaged by a rotating shaft rod so that the support column can be folded or unfolded on the support seat body. A control handle 411 is installed on the top of the support column, which can be used to drive the front axle to deflect and drive the front wheel to steer. The outer tube of the folding push rod is installed on the support seat body, and its inner rod is engaged with the support column. The folding push rod drives the support column to fold or unfold on the support seat body.

[0054] In this embodiment, the folding push rod is performed by an electric push rod.

[0055] In this embodiment, the support column consists of a fixed outer tube and a movable inner tube. The bottom of the fixed outer tube is installed on the support base body. The movable inner tube is inserted into the fixed outer tube from the top and can be extended and retracted in the fixed outer tube. The control handle is installed on the top of the movable inner tube. The fixed outer tube is also provided with a positioning tube clamp that is adapted to the movable inner tube, and the positioning tube clamp is used to fix the telescopic length of the movable inner tube.

[0056] In this embodiment, a control button or knob is further installed on the top of the support column. The control button or knob is electrically connected to the drive motor through a circuit, and can control the operating status of the drive motor.

[0057] The riding support assembly includes a supporting front frame 510, a supporting rear frame 520, a supporting seat 530 and a positioning link 540. The supporting front frame is mounted on the rear side of the top of the supporting rear frame through a rotating structure, and extends upwards to the supporting rear frame, and can be folded or unfolded on the supporting rear frame. A space for the passenger's legs to move is left between the support seat body and the supporting front frame. The supporting rear frame is mounted on the rear side of the top of the supporting rear frame through a rotating structure and is located behind the supporting front frame. It extends upwards to the supporting rear frame and can be unfolded or folded on the supporting rear frame. The supporting seat is arranged horizontally, and its rear part is mounted on the top of the supporting rear frame through a rotating structure. The front part is installed on the top of the supporting front frame through a rotating structure, and can be expanded or folded along with the supporting front frame and the supporting rear frame. The supporting seat supports the body of the occupant. A pair of positioning links are provided, one end of each positioning link is connected to the supporting front frame through a rotating structure, and the other end extends to the supporting rear frame. A pair of avoidance slots extending laterally are provided in the supporting rear frame. The rear part of the supporting front frame can be exposed from the avoidance slot, so that the other end of the positioning link is connected to the rear part of the supporting front frame through the rotating structure. When the supporting front frame is extended and retracted in the supporting rear frame, the supporting front frame, the supporting rear frame and the supporting seat can be driven to fold or expand through the positioning link.

[0058] The seating limit assembly includes a limit backrest 600, the bottom of which is connected to the top of the supporting rear frame through a folding frame 610 and is located behind the supporting seat. The middle part is connected to the rear of the supporting seat through a rotating structure. When the supporting front frame, the supporting rear frame and the supporting seat are folded or unfolded, the limit backrest can be driven to fold or unfold. The top of the limit backrest extends above the supporting seat to limit the body of the passenger.

[0059] The four-wheeled scooter is provided with a frame consisting of a supporting front frame and a supporting rear frame, the rear part of the supporting front frame is installed on the front part of the supporting rear frame through a plug-in structure, and a folding push rod is provided between the supporting rear frame and the supporting front frame to drive the supporting front frame to extend and retract in the supporting rear frame. A riding support assembly consisting of a supporting front frame, a supporting rear frame, a supporting seat and a positioning connecting rod is also provided. When the supporting front frame extends and retracts in the supporting rear frame, the supporting front frame, the supporting rear frame and the supporting seat can be driven to fold or unfold by the positioning connecting rod, so that the limit backrest is folded or unfolded accordingly. At the same time, a support control assembly consisting of a supporting seat body, a supporting column and a folding push rod is provided, and the folding push rod drives the supporting column to fold or unfold on the supporting seat body, so that the four-wheeled scooter can be folded using an electric folding structure, occupies less space after folding, and is easy to carry.

[0060] In the description of the present invention, it should be noted that when terms such as "upper," "lower," "inner," "outer," "left," and "right" appear to indicate an orientation or positional relationship, they should be understood to be based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is typically placed when in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms are intended solely to facilitate the description of the present invention and simplify the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be understood as limiting the present invention. In addition, when terms such as "first" and "second" appear, they are used solely to distinguish descriptions and should not be understood to indicate or imply relative importance. In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, terms such as "installed," "set," and "connected" should be understood broadly. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; a mechanical connection or an electrical connection; a direct connection, an indirect connection through an intermediate medium, or internal communication between two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood based on the specific circumstances.

[0061] Therefore, what has been shown and described above are the basic principles, main features, and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, which are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications are intended to fall within the scope of protection of the present invention.

Claims

1. A four-wheeled vehicle, characterized in that: include: A support assembly component having an installation space thereon; An active walking assembly is installed on the supporting assembly, and the active walking assembly supports the supporting assembly and drives the supporting assembly to move; The driven traveling assembly is mounted on the supporting assembly and corresponds to the active traveling assembly. The driven traveling assembly supports the supporting assembly and can move together with the supporting assembly and the active traveling assembly. The support and control assembly is mounted on the support assembly assembly via an electrically foldable structure and can be folded or unfolded on the support assembly assembly. The support and control assembly supports the passenger's hands. The active travel assembly is electrically connected to the support and control assembly via a circuit. The passenger can operate and control the operating state of the active travel assembly via the support and control assembly. A seating support assembly, which is mounted on the support assembly assembly via an electric folding structure and can be folded or unfolded on the support assembly assembly to support the body of the passenger; A seat limiter assembly, which is mounted on the seat support assembly via a folding structure and can be folded or unfolded together with the seat support assembly to limit the position of the passenger on the seat support assembly; The support assembly includes: The supporting rear frame is formed by splicing rods, which are arranged in a horizontal row and have an installation space inside; The supporting front frame is formed by splicing rods, and its rear part is installed on the front part of the supporting rear frame through a plug-in structure, and can be extended and retracted in the supporting rear frame. The supporting rear frame and the supporting front frame together form the vehicle frame; The ride support components include: The supporting front frame is mounted on the rear side of the top of the supporting rear frame through a rotating structure. The supporting front frame extends above the supporting rear frame and can be folded or unfolded on the supporting rear frame. Space for the passenger's legs to move is left between the support seat and the supporting front frame. The supporting rear frame is mounted on the rear side of the top of the supporting rear frame through a rotating structure and is located behind the supporting front frame. It extends above the supporting rear frame and can be unfolded or folded on the supporting rear frame. The support seat is arranged in a transverse direction, with its rear portion mounted on the top of the support rear frame through a rotating structure, and its front portion mounted on the top of the support front frame through a rotating structure. The support seat can be unfolded or folded along with the support front frame and the support rear frame, and the support seat supports the body of the passenger; A pair of positioning links are provided, one end of each positioning link is connected to the supporting front frame through a rotating structure, and the other end extends to the supporting rear frame. A pair of avoidance slots extending in the transverse direction are provided in the supporting rear frame. The rear portion of the supporting front frame can be exposed from the avoidance slots, so that the other end of the positioning link is connected to the rear portion of the supporting front frame through the rotating structure. When the supporting front frame is extended or retracted in the supporting rear frame, the supporting front frame, the supporting rear frame and the supporting seat can be driven to fold or unfold through the positioning link; The ride restraint components include: The limit backrest has a bottom connected to the top of the supporting rear frame through a folding frame and is located behind the supporting seat. The middle part is connected to the rear of the supporting seat through a rotating structure. When the supporting front frame, supporting rear frame and supporting seat are folded or unfolded, the limit backrest can be driven to fold or unfold. The top of the limit backrest extends above the supporting seat to limit the body of the occupant.

2. A four-wheeled scooter according to claim 1, characterized in that: The support assembly also includes: The folding push rod is arranged in the transverse direction, the outer tube of the folding push rod is installed in the supporting rear frame, and the inner rod of the folding push rod is engaged with the supporting front frame. The supporting front frame is driven by the folding push rod to extend and retract in the supporting rear frame.

3. The four-wheeled vehicle according to claim 1, characterized in that: Active walking components include: A driving wheel pair, comprising a rear axle and a pair of rear wheels, wherein the rear axle is mounted on the rear side of the bottom of the supporting rear frame, and the rear wheels are mounted on both ends of the rear axle through a rotating structure; The drive motor is installed on the rear axle and connected to the rear wheels through a transmission structure. The drive motor drives the rear wheels to rotate.

4. The four-wheeled vehicle according to claim 3, characterized in that: Driven travel components include: The driven wheelset has a front axle and a pair of front wheels. The front axle is installed on the front side of the bottom of the supporting front frame. The front wheels are installed on both ends of the front axle through a rotating structure. The rear wheels are located behind the front wheels. The frame is supported by the front wheels and the rear wheels together. When the rear wheels rotate, they can drive the frame and the front wheels to move.

5. The four-wheeled vehicle according to claim 4, characterized in that: Support control components include: The support seat body is installed on the front side of the top of the support frame through a rotating structure and extends above the support frame. The front axle is connected to the support seat body through a transmission structure; A support column is provided with a matching fork at the bottom of the support column, and the top of the support seat extends into the matching fork and is engaged by rotating the shaft, so that the support column can be folded or unfolded on the support seat. A control handle is installed on the top of the support column, which can be used to drive the front axle to deflect and drive the front wheel to steer; A folding push rod, the outer tube of which is mounted on the supporting seat body, and the inner rod of which is engaged with the supporting column, is driven by the folding push rod to fold or unfold the supporting column on the supporting seat body.

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