Steering mechanism with included angle formed between upper section and lower section and electric scooter with steering mechanism

Abstract

The utility model relates to the field of electric scooters, in particular to a steering mechanism with an included angle between an upper section and a lower section and an electric scooter with the steering mechanism. The utility model provides a steering mechanism with an included angle between an upper section and a lower section, which comprises a front fork and a vertical pipe which are connected with each other, and the included angle between the axes of the front fork and the vertical pipe intersects to form a backward inclined included angle of the front fork relative to the vertical pipe. The front wheel installed on the front fork moves forwards relative to the vehicle body, and the front wheel landing point approaches the gravity center of a load. The coaxial structure of the front fork and the vertical pipe is changed, the lower end of the front fork, the front wheel and the landing point of the front wheel move forwards and are close to the gravity center line of a loaded heavy object by increasing the backward inclination angle of the front fork and the non-coaxial inclined connection of the front fork and the vertical pipe, and the stability, the safety and the maneuverability of a vehicle body for loading and riding are improved. The electric scooter with the steering mechanism can be stably and safely ridden after loading objects, and is easy to control.

Description

Technical Field

[0001] The utility model relates to the field of electric scooters, in particular to a steering mechanism with an included angle between the upper and lower sections and an electric scooter with the mechanism. Background Art

[0002] As a popular riding tool in recent years, the electric scooter is light and compact and is deeply loved by users. The electric scooter includes a steering mechanism for controlling the steering of the wheels. The riser pipe and the front fork in the steering mechanism are butted through a connecting piece. The upper end of the steering mechanism is connected to the handlebar, and the lower end is installed with a wheel. When the front fork and the riser pipe are coaxial or the axes of the two are parallel, since the front fork is usually inclined, the coaxial riser pipe also inclines backward by a certain angle. Turning the handlebar can drive the riser pipe, the front fork and the front wheel to turn synchronously to control the scooter.

[0003] In order to increase the load-carrying function of the electric scooter, some electric scooters are equipped with a load-carrying frame / board for loading items at the front end of the vehicle frame. The distance between the center of gravity of the load in front and the landing point of the front wheel at the rear is relatively far, which will reduce the riding stability, safety and controllability of the scooter. Especially when the load is heavy, accidents such as tipping and rolling over will occur during the control of riding and turning. Summary of the Utility Model

[0004] To solve the technical problem of the potential safety hazard that the existing electric scooter with a load-carrying frame / board affects the riding stability, the utility model provides a steering mechanism with an included angle between the upper and lower sections, including a connected front fork and a riser pipe. The axis included angle of the front fork and the riser pipe intersects to form a backward inclination angle of the front fork relative to the riser pipe, so that the front wheel installed at the lower end of the front fork moves forward relative to the vehicle body, extending the position of the front wheel landing point and making it closer to the center of gravity of the load. This effectively improves the riding stability and safety of the electric scooter after loading items, and avoids accidents caused by the deviation of the center of gravity after the scooter is loaded with heavy objects and the resulting risks of property damage and personal injury. The electric scooter using this steering mechanism can also maintain reliable and stable steering and safe riding after loading heavy objects, allowing users to use it with confidence.

[0005] Technical solution adopted by the present utility model to solve the technical problem: A steering mechanism with an angle between the upper and lower segments, including a front fork in the lower segment and a riser in the upper segment. The upper end of the front fork is connected to the lower end of the riser. The fork opening at the lower end of the front fork is rotatably connected to the front wheel. The feature is that the front fork is inclined backward to be connected to the riser, and the axes of the front fork and the riser intersect at an acute angle, forming a backward tilt angle of the front fork relative to the riser. As a result, the front wheel installed at the lower end of the front fork moves forward relative to the vehicle body, extending the position of the front wheel contact point, making it closer to the center of gravity of the load. The present utility model changes the coaxial structure of the front fork and the riser. Through the inclined structure where the front fork is tilted backward and non-coaxial with the riser, it avoids the coincidence or parallelism of the axis of the front fork and the axis of the riser, forming an angle between the two axes. The lower end of the front fork moves forward relative to the vehicle body compared to the original coaxial / parallel structure. At the same time, the front wheel and the front wheel contact point also move forward accordingly, approaching the center of gravity line of the load. This improves the stability, safety, and maneuverability of the vehicle when carrying goods, and avoids potential safety hazards caused by the center of gravity line of the heavy load on the scooter being far from the front wheel contact point, which affects riding. After measurement, with the improved solution, the front fork connected to the riser at an angle can move the front wheel of the scooter forward by at least 20 mm. While changing the tilt angle of the front fork relative to the riser, this improved solution can keep the angle of the riser unchanged. While effectively moving the front wheel forward, it avoids the handlebar occupying the standing space and operating space of the vehicle body due to an increased tilt angle of the riser.

[0006] As a further improvement and supplement to the above technical solution, the present utility model adopts the following technical measures: The front fork is fixedly connected or foldably connected to the riser through a connector. The axes of the two ends of the connector intersect at the above-mentioned acute angle, and the two ends of the connector are coaxially docked with the riser and the front fork respectively; or one of the front fork and the riser is provided with an inclined section at the connection that intersects with the axis of the body at the above-mentioned acute angle and is coaxially docked with the other. The inclined connection of the front fork and the riser can be achieved through a connector with an intersecting angle between the axes of the two ends as a transition. The front fork and the riser are respectively docked at the two ends of the connector. When the front fork and the riser are fixedly connected, it is suitable for occasions with storage space; when the front fork and the riser are foldably connected, the riser can be folded and laid down relative to the front fork, which is suitable for occasions where the scooter has a folding and storage requirement. The inclined connection of the front fork and the riser can also be achieved by setting an inclined section with an angle to the axis of the body on one of them and coaxially docking it with the other, thereby realizing the inclined connection of the front fork and the riser.

[0007] The connector is a hollow socket. The two ends of the socket are open to form two interfaces with an acute angle between their axes. The two interfaces are coaxially connected to the riser pipe and the front fork respectively; or the connector is formed by docking a folder and a hollow socket up and down. The two ends of the socket are open to form two upper and lower interfaces with an acute angle between their axes. The two upper and lower interfaces are coaxially connected to the folder and the front fork respectively. The connector can be a single hollow socket. The two interfaces formed by the open ends of the socket have an acute angle between their axes. The front end is an upturned end connected to the front fork, and the rear end is connected to the riser pipe. The connection can be achieved by plugging, screwing, hoop connection, etc. to realize socket connection, or other connection methods of existing technologies, so that the riser pipe and the front fork are obliquely connected at an angle. The connector can also be a combination of a hollow socket and a folder. The socket has the same structure as the previous one to realize the inclination of the front fork relative to the riser pipe. The upturned interface at the front end of the socket is connected to the front fork, and the rear interface is connected to the folder. The connection can be the aforementioned socket connection or other methods; the folder is a common mechanism on existing folding bicycles, which can make the riser pipe fall down relative to the front fork for convenient storage.

[0008] The connector is a folder that can make the riser pipe rotate and fall down relative to the front fork. The folder includes an upper socket and a lower socket hinged together and an operating handle. The upper socket and the lower socket can fit together up and down after rotating in place, and a limiting structure for positioning and connecting the upper and lower sockets is provided between the fitting surfaces of the upper and lower sockets. Rotating the operating handle can lock or unlock the limiting structure to lock or unlock the fitting of the upper and lower sockets. Upper and lower interfaces coaxially sleeved with the riser pipe and the front fork are respectively provided at the top of the upper socket and the bottom of the lower socket, and the axes of the upper and lower interfaces intersect at the acute angle. The riser pipe and the front fork can also be connected through a folder. The folder can make the riser pipe rotate and fall down relative to the front fork, so that the steering mechanism can reduce the height and volume through partial folding, which is convenient for the storage and carrying of the electric scooter; the upper and lower sockets of the folder are respectively provided with two interfaces for sleeving the riser pipe and the front fork, and the axes of the two interfaces intersect at a corresponding acute angle. At the same time, the two interfaces are respectively coaxially sleeved with the riser pipe and the front fork, so that the front fork after installation is obliquely connected to the front fork. The upper socket and the lower socket fit together after rotating in place and are positioned by the limiting structure between the fitting surfaces. Rotating the operating handle can lock or unlock the aforementioned positioning connection, thereby locking the inclined connection of the front fork and the riser pipe, or unlocking to make the riser pipe rotatable and fall down relative to the front fork.

[0009] The acute angle is between 5° and 20°. The inclined connection of the front fork and the riser pipe within this angle range can simultaneously meet the needs of the scooter for flexible steering and the adjustment of the position of the front wheel landing point by moving the lower end of the front fork forward. When the angle is too small, the forward movement distance of the lower end of the front fork is not obvious, and the distance between the front wheel landing point and the center of gravity line of the load is still far; when the angle is too large, it affects the steering performance of the scooter, the steering operation is laborious, and the turning radius of the scooter increases and the flexibility decreases. The scooters with front forks installed at different angles can be divided into different specifications to match different load requirements.

[0010] The second object of the invention of the present utility model is to provide an electric scooter, which includes a vehicle body, a handlebar, a battery, a front wheel and a rear wheel. A steering mechanism is provided at the front of the vehicle body to connect the handlebar and the front wheel. The battery is arranged in the vehicle body. The rear wheel is connected to the rear end of the vehicle body through a rear fork. At least one of the front wheel and the rear wheel is equipped with a motor. A load-carrying frame / plate is provided at the front end of the vehicle body. The feature is that the steering mechanism is the steering mechanism with an angle between the upper and lower sections as described in one of the foregoing. The handlebar is connected to the upper end of the riser, and the front wheel is rotatably connected to the fork opening at the lower end of the front fork. The electric scooter with a load-carrying function uses a steering mechanism with an angle between the upper and lower sections, so that an angle is formed between the axes of the front fork and the riser. Compared with the original coaxial / parallel front fork and riser, the front wheel installed at the lower end of the front fork and the ground contact point of the front wheel can be moved forward together, close to the center of gravity line of the loaded heavy object, effectively improving the stability, safety and maneuverability of the electric scooter when carrying a load and riding, and avoiding potential safety hazards caused by the center of gravity line of the loaded heavy object being far from the ground contact point of the front wheel and affecting the riding of the electric scooter.

[0011] The riser is formed by sleeving two pipe fittings up and down. The upper pipe and the lower pipe are respectively connected to the handlebar and the front fork. An adjustable locking mechanism is provided at the sleeved joint of the upper pipe and the lower pipe. The riser has a telescopic and adjustable structure. By changing the overlapping length of the upper and lower pipe fittings in sleeve connection, the length of the riser and the height of the handlebar can be adjusted to adapt to the needs of users with different heights. The locking mechanism can lock after the two pipe fittings are sleeved in place to lock the overlapping length of the sleeve connection and fix the length of the riser and the height of the handlebar. The locking mechanism can use a common seat tube quick-release lock with a handle, and the two pipe fittings in sleeve connection can be quickly locked / unlocked by turning the handle.

[0012] The front fork is passed through the front part of the vehicle body through a bearing, and the upper end of the front fork extends upward out of the vehicle body to connect to the riser. Compared with the two structures where the riser passes through the vehicle body to connect to the front fork and the riser and the front fork are connected inside the vehicle body, the front fork passing through the vehicle body to connect to the riser can make the steering controllability of the scooter better, and the lower end of the front fork together with the front wheel of the vehicle can also have a relatively large forward movement distance relative to the vehicle body, further improving the stability, safety and controllability when the electric scooter is carrying a load and riding.

[0013] The load-carrying frame / plate is detachably connected or fixedly connected to the front end of the vehicle body. The detachable load-carrying frame / plate is provided with a rotatable handle at the top. The load-carrying frame / plate can be fixedly connected or detachably connected to the vehicle body. Among them, the fixed connection is more stable and has a greater load-bearing capacity compared with the detachable connection. In the case of detachable connection, users can add a load-carrying frame / plate according to needs to carry items with the vehicle, and remove the load-carrying frame / plate from the vehicle body after the scooter is parked, and take away the load-carrying frame / plate together with the items through the handle.

[0014] The angle formed by the riser and the vertical plane is between 5° and 20°. The riser is inclined backward at a small angle relative to the vertical plane, driving the handlebar to move backward as well. Operating the handlebar to turn is easy and labor-saving, and the riding comfort is good.

[0015] The utility model changes the coaxial structure of the front fork and the vertical pipe. By increasing the rake angle of the front fork and adopting an inclined structure that is non-coaxial with the vertical pipe, the coincidence or parallelism of the two axes of the front fork and the vertical pipe is changed, so that an included angle is formed between the two axes. The lower end of the front fork moves forward relative to the vehicle body compared with the original coaxial / parallel state, and at the same time, the front wheel and the front wheel contact point also move forward accordingly, approaching the center of gravity line of the loaded heavy object, improving the stability, safety and maneuverability of the vehicle body when carrying goods and riding, and avoiding potential safety hazards caused by the center of gravity line of the loaded heavy object being far from the front wheel contact point, which affects the riding of the scooter. Further, an electric scooter with the aforementioned steering mechanism is also provided, enabling the electric scooter to ride stably and safely even when carrying heavy loads, and being easy to control, preventing potential safety hazards such as tipping and rolling over caused by the loaded heavy object affecting the riding. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 : Schematic structural diagram of Embodiment 1.

[0017] Figure 2 : Schematic diagram of the front fork having an inclined section connected to the vertical pipe.

[0018] Figure 3 : Schematic diagram of the vertical pipe having an inclined section connected to the front fork.

[0019] Figure 4 : Schematic diagram of the front fork and the vertical pipe being connected through a pipe seat.

[0020] Figure 5 : Cross-sectional view of the structure of Embodiment 1.

[0021] Figure 6 : Schematic diagram of the vertical pipe of Embodiment 1 being laid down and folded.

[0022] In the figure: 1. Front fork, 2. Vertical pipe, 2-1. Upper pipe, 2-2. Lower pipe, 3. Front wheel, 4. Folding device, 4-1. Upper pipe seat, 4-2. Lower pipe seat, 4-3. Operating handle, 5. Handlebars, 6. Rear wheel, 7. Rear fork, 8. Locking mechanism, 8-1. Handle, 9. Cargo box, 10. Handle, 11. Center of gravity line, 12. Pipe seat, 13. Vehicle body, 14. Battery. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The following further describes the present utility model in conjunction with the drawings and the detailed implementation manners.

[0024] Embodiment 1 is a steering mechanism with an included angle between the upper and lower sections, such as Figure 1As shown, it includes a front fork 1 in the upper section and a riser 2 in the lower section. The upper end of the front fork 1 is connected to the lower end of the riser 2. The fork opening at the lower end of the front fork 1 is rotatably connected to the front wheel 3. The front fork 1 is inclined backward and connected to the riser 2, and the axis angles of the front fork 1 and the riser 2 intersect to form an acute angle α as shown in the figure, forming a backward tilt angle of the front fork 1 relative to the riser 2. As a result, the front wheel 3 installed at the lower end of the front fork 1 moves forward relative to the vehicle body, extending the position of the grounding point of the front wheel 3 and making it closer to the center of gravity of the load. The value range of the acute angle α is 5° ≤ α ≤ 20°, and preferably 12° in this embodiment.

[0025] This embodiment is different from the existing coaxial structure of the front fork and the riser. It is connected by an inclined manner where the front fork is tilted backward and non-coaxial with the riser, avoiding the coincidence or parallelism of the axis of the front fork and the axis of the riser. As shown in the figure, the axes of the two form an acute angle. The lower end of the front fork moves forward a distance L1 relative to the vehicle body compared to the original coaxial / parallel structure, causing the front wheel and the grounding point of the front wheel to also move forward, approaching the center of gravity line 11 of the loaded heavy object, improving the stability, safety, and maneuverability of the vehicle when carrying goods, and avoiding potential safety hazards caused by the center of gravity line of the loaded heavy object being far from the grounding point of the front wheel, which may affect the riding of the scooter.

[0026] Furthermore, the inclined connection between the front fork 1 and the riser 2 can be achieved by one of them having an inclined section at the connection that intersects the axis of the body at an acute angle α and being coaxially docked with the other, such as Figure 2 as shown, an inclined section is extended upward on the front fork 1 and coaxially docked with the riser 2; or as shown in 3, an inclined section is extended downward on the riser 2 and coaxially docked with the front fork 1; or as Figure 4 shown, the front fork 1 is fixedly connected to the riser 2 through a hollow socket 12 as a connector. The axis angles at both ends of the socket 12 intersect and form the said acute angle. Both ends of the socket 12 are coaxially sleeved with the riser 2 and the front fork 1 respectively. This socket 12 can be externally placed on the scooter body or installed inside the scooter body.

[0027] Such as Figure 1 and Figure 5 and Figure 6As shown in the figure, the front fork 1 and the vertical pipe 2 can also be foldably connected through a folder 4. The folder 4 includes an upper pipe seat 4-1 and a lower pipe seat 4-2 that are hinged together and an operation handle 4-3. The upper pipe seat 4-1 and the lower pipe seat 4-2 can be attached to each other vertically after being rotated in place. At the same time, a limiting structure for positioning and connecting the upper and lower pipe seats is provided between the mating surfaces of the upper pipe seat 4-1 and the lower pipe seat 4-2. Rotating the operation handle 4-3 can lock or unlock the limiting structure, so that the upper and lower pipe seats are attached and locked or unlocked. The top of the upper pipe seat 4-1 is provided with an upper interface that is coaxially sleeved with the vertical pipe 2, and the bottom of the lower pipe seat 4-2 is provided with a lower interface that is coaxially sleeved with the front fork 1. The axis angles of the upper interface and the lower interface intersect to form the aforementioned acute angle α of 12°. Connecting the vertical pipe and the front fork through this folder can make the vertical pipe rotate and fall relative to the front fork, and the steering mechanism can reduce the overall height and volume by folding the vertical pipe, which is convenient for storage and carrying on an electric scooter; at the same time, the folder has two interfaces with intersecting axis angles on the upper and lower pipe seats respectively. When the two interfaces are coaxially sleeved with the vertical pipe and the front fork respectively, the front fork can be tilted backward to connect the front fork. After the upper pipe seat and the lower pipe seat are rotated in place and attached, they are positioned by the limiting structure between the mating surfaces. Then rotating the operation handle can lock the inclined connection of the front fork and the inner pipe, and rotating the handle in the reverse direction can unlock it, allowing the vertical pipe to rotate and fall relative to the front fork. In addition, a conventional folder with the same axis of the upper and lower pipe seats after rotation in place and the Figure 4 upper and lower combinations of the pipe seats described in the figure can also be used to connect the vertical pipe and the front fork. The interfaces with an included angle between the upper and lower axes of the pipe seats in the figure are coaxially connected to the folder and the front fork respectively. The structure of the folder can refer to the portable walking tool and its folding connection mechanism with the patent number 202120768580.4, the folder and the folding vehicle with the patent number 202120433209.2, and other existing technologies with similar structures that can achieve the folding and falling effect.

[0028] Embodiment 2 is an electric scooter, referring to Figure 1 and Figure 5 and Figure 6 As shown in the figure, it includes a vehicle body 13, a handlebar 5, a battery 14, a front wheel 3 and a rear wheel 6. A steering mechanism is provided at the front of the vehicle body 13 to connect the handlebar 5 and the front wheel 3. The battery is placed in the vehicle body 13. The rear wheel 6 is connected to the rear end of the vehicle body 13 through a rear fork 7. At least one of the front wheel 3 and the rear wheel 6 is equipped with a motor. A load-carrying frame / plate is provided at the front end of the vehicle body 13. In this embodiment, a basket-shaped load-carrying frame 9 shown in the figure is preferably used. The steering mechanism is the steering mechanism with an included angle between the upper and lower sections described in Embodiment 1. The handlebar 5 is connected to the upper end of the vertical pipe 2, and the front wheel 3 is rotatably connected to the fork opening at the lower end of the front fork 1.

[0029] The electric scooter carries heavy loads in the load basket provided at the front end. Since the scooter has a steering mechanism with an angle between the upper and lower sections, the axes of the front fork and the riser form an angle. Compared with the common electric scooters where the front fork and the riser are coaxial / parallel, the front wheel installed at the lower end of the front fork and the ground contact point of the front wheel can be moved forward together, closer to the center of gravity line 11 of the loaded heavy object, improving the stability, safety and maneuverability of the electric scooter when carrying loads and riding, and avoiding the safety hazards caused by the center of gravity line of the loaded heavy object being far from the ground contact point of the front wheel and affecting the riding of the electric scooter.

[0030] Further, in order to enable the riser to adjust its length, and thus the height of the handlebar can be changed to adapt to the grips of users of different heights, the riser 2 is formed by sleeving two pipe fittings up and down. The upper pipe 2-1 and the lower pipe 2-2 are respectively connected to the handlebar 5 and the front fork 1, and an adjustable locking mechanism 8 is provided at the sleeved joint of the upper pipe and the lower pipe. The locking mechanism 8 here can be a common seat post quick release lock with a handle. By turning the handle 8-1, the sleeved joint of the two pipe fittings can be quickly locked / unlocked, changing the extended length of the riser.

[0031] Further, the front fork 1 is placed through the front part of the vehicle body 13 via a bearing, and the upper end of the front fork 1 extends upward out of the vehicle body 13 to connect to the riser 2. Only the front fork and the vehicle body are rotationally connected in the entire steering mechanism, so the steering controllability of the scooter is better, and the lower end of the front fork together with the front wheel of the vehicle can also have a relatively large forward movement distance relative to the vehicle body, further improving the stability, safety and maneuverability of the electric scooter when carrying loads and riding.

[0032] The load basket / plate is detachably connected or fixedly connected to the front end of the vehicle body 13. In this embodiment, a detachable connection is preferably used, and the load basket / plate is also preferably a basket-shaped load basket 9. Matching clamping parts and clamping grooves are provided on the back surface of the load basket 9 and the front end surface of the vehicle body 13 to achieve detachable connection. A rotatable handle 9 is also provided at the top of the load basket / plate. Users can install the load basket / plate according to needs to carry items with the vehicle, and remove the load basket / plate from the vehicle body after the scooter is parked, and take away the load basket / plate together with the items through the handle. The fixed connection of the load basket / plate is more stable and has a greater load-bearing capacity compared with the detachable connection.

[0033] The riser 2 forms an angle β with the vertical plane, 5° ≤ β ≤ 20°. In this embodiment, the angle β is preferably 12°. The riser is tilted backward at a small angle relative to the vertical plane, driving the handlebar to move backward as well. Operating the handlebar to turn is easy and labor-saving, and it is not easy to fatigue when holding the handlebar during long-term riding of the electric scooter.

Claims

1. A steering mechanism with an angle between upper and lower sections, comprising a front fork (1) at the lower section and a seat tube (2) at the upper section, wherein the upper end of the front fork (1) is connected to the lower end of the seat tube (2), and the fork opening at the lower end of the front fork (1) is rotatably connected to a front wheel (3), wherein the fork opening is The front fork (1) is tilted backwards and connected to the seat tube (2), and the axes of the front fork (1) and the seat tube (2) intersect at an acute angle, forming a rearward tilt angle of the front fork (1) relative to the seat tube (2), thereby causing the front wheel (3) installed at the lower end of the front fork (1) to move forward relative to the vehicle body, extending the position of the front wheel (3) landing point, making it closer to the center of gravity of the load.

2. The steering mechanism with an angle between the upper and lower sections according to claim 1, characterized in that The front fork (1) is fixedly connected or foldably connected to the stand pipe (2) through a connector, the axes at both ends of the connector intersect at the acute angle, and the two ends of the connector are coaxially connected to the stand pipe (2) and the front fork (1) respectively; or one of the front fork (1) and the stand pipe (2) is provided with an inclined section at the connection point, the inclined section intersecting with the axis of the body at the acute angle, and coaxially connected to the other.

3. The steering mechanism with an angle between the upper and lower sections according to claim 2, characterized in that The connector is a hollow tube seat (12), with both ends of the tube seat (12) open to form two interfaces with an acute angle between the axes, and the two interfaces are coaxially connected to the stand pipe (2) and the front fork (1) respectively; or the connector is a folder and a hollow tube seat (12) connected up and down, with both ends of the tube seat (12) open to form two upper and lower interfaces with an acute angle between the axes, and the upper and lower interfaces are coaxially connected to the folder and the front fork (1) respectively.

4. The steering mechanism with an angle between the upper and lower sections according to claim 2, characterized in that The connector is a folding device (4) that can rotate and lay down the seat tube (2) relative to the front fork (1). The folding device comprises an upper tube seat (4-1) and a lower tube seat (4-2) that are hingedly connected and an operating handle (4-3). The upper tube seat (4-1) and the lower tube seat (4-2) can fit together up and down after being rotated to the right position, and a limiting structure that can position and connect the upper tube seat and the lower tube seat is provided between the fitting surfaces of the upper tube seat (4-1) and the lower tube seat (4-2). The limiting structure can be locked or unlocked by rotating the operating handle (4-3), so that the upper tube seat (4-1) and the lower tube seat (4-2) fit together, lock or unlock. The top of the upper tube seat (4-1) and the bottom of the lower tube seat (4-2) are respectively provided with an upper and a lower interface that are coaxially connected to the seat tube (2) and the front fork (1), and the axis angles of the upper and lower interfaces intersect to form the acute angle.

5. The steering mechanism with an angle between the upper and lower sections according to claim 1, characterized in that The acute angle is between 5° and 20°.

6. An electric scooter, comprising a body (13), a handlebar (5), a battery, a front wheel (3) and a rear wheel (6), wherein a steering mechanism is provided at the front of the body (13) to connect the handlebar (5) and the front wheel (3), the battery is arranged on the body (13), the rear wheel (6) is connected to the rear end of the body (13) through a rear fork (7), at least one of the front wheel (3) and the rear wheel (6) is provided with a motor, and a cargo frame / plate is provided at the front end of the body (13), wherein the electric scooter is characterized in that The steering mechanism is a steering mechanism with an angled upper and lower sections as described in any one of claims 1 to 5, the handlebar (5) is connected to the upper end of the seat tube (2), and the front wheel (3) is rotatably connected to the fork at the lower end of the front fork (1).

7. The electric scooter according to claim 6, characterized in that The stand pipe (2) is formed by sleeve-jointing two upper and lower pipes, the upper pipe and the lower pipe are respectively connected to the handlebar (5) and the front fork (1), and an adjustable locking mechanism (8) is provided at the sleeve joint of the upper pipe and the lower pipe.

8. The electric scooter according to claim 6, characterized in that The front fork (1) is placed through a bearing on the front part of the vehicle body (13), and the upper end of the front fork (1) extends upwardly out of the vehicle body (13) to connect with the seat tube (2).

9. The electric scooter according to claim 6, characterized in that The object-carrying frame / plate is detachably or fixedly connected to the front end of the vehicle body (13), and a rotatable handle (9) is provided on the top of the detachably connected object-carrying frame / plate.

10. The electric scooter according to claim 6, characterized in that The included angle formed by the vertical pipe (2) and the vertical plane is between 5° and 20°.

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