A small electric vehicle capable of preventing rollover

Abstract

The present invention relates to the technical field of electric vehicles, and discloses a small electric vehicle capable of preventing rollover, the small electric vehicle capable of preventing rollover comprising a seat, a mounting seat fixedly mounted on the side wall of the seat, a blocking plate fixedly mounted on the side wall of the mounting seat, the end of a rotating sleeve rotatably mounted on the lower surface of the blocking plate, the end of a supporting foot fixedly mounted on the arc-shaped outer wall of the rotating sleeve, and an auxiliary support assembly provided inside the supporting foot. The small electric vehicle capable of preventing rollover, by starting a dual-axis motor and coordinating with the rotation of a threaded rod, further compresses a clamping spring, thereby causing the clamping spring to maintain a greater squeezing force on the clamping plate, so that the supporting foot can maintain a tighter clamping state when swinging to a supporting state, thereby preventing the supporting foot from shifting sideways due to impact force during the driving of the electric vehicle, thereby affecting the anti-rollover protection effect of the auxiliary support assembly, and ensuring the driving safety of the electric vehicle.

Description

Technical Field

[0001] The present invention relates to the technical field of electric vehicles, in particular to a small electric vehicle capable of preventing rollover. Background Art

[0002] Small electric vehicles have a wide range of applications in daily life. They are usually used as a means of transportation for short distances, especially as a substitute for driving or as a spare in a car. They can be used by car drivers when they are moving on some small roads or within a community, thereby improving people's travel efficiency. Usually, small electric vehicles are pedal-type, and the driver can stand on them. The built-in battery provides power to the engine, which enables the engine to drive the wheels to make the small electric vehicle move, saving people's physical strength.

[0003] Existing small electric vehicles usually adopt the form of two wheels in the front and rear. Such small electric vehicles are light and fast, but the driver needs to concentrate during driving to avoid the vehicle from rolling over during driving, which causes certain dangers. In the existing technology, a gyroscope or level is usually installed inside the electric vehicle to monitor the shape and posture of the small electric vehicle. When the vehicle is tilted at a high angle, the vehicle will be controlled to slow down or an alarm will be issued to remind the driver to pay attention to safety.

[0004] However, in the actual use of the above-mentioned equipment, it takes a certain amount of time for the driver to respond after hearing the alarm. When the electric vehicle's anti-rollover protection structure is extended, it is easy to be impacted by the speed of the vehicle and become skewed, and thus cannot be stably supported. As a result, when the small electric vehicle is traveling at a high speed, it is easy to roll over and cause irreparable damage. The existing protection measures and reminder measures are difficult to effectively ensure the stable driving posture of the small electric vehicle, which greatly reduces the driving safety of the small electric vehicle. In view of this, we propose a small electric vehicle that can prevent rollover. Summary of the Invention

[0005] The object of the present invention is to provide a small electric vehicle that can prevent rollover, so as to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a small electric vehicle capable of preventing rollover, comprising a seat, a driving wheel being rotatably mounted on the end of the seat, a fixing sleeve being fixedly mounted on the upper surface of the seat, a head shaft being sleeved inside the fixing sleeve, a handle being fixedly mounted on the top side of the head shaft, a mounting seat being fixedly mounted on the side wall of the seat, a blocking plate being fixedly mounted on the side wall of the mounting seat, an end of a rotating sleeve being rotatably mounted on the lower surface of the blocking plate, an end of a supporting foot being fixedly mounted on the arc-shaped outer wall of the rotating sleeve, a limiting column being fixedly mounted on the lower surface of the blocking plate, an auxiliary support assembly being provided inside the supporting foot, and the auxiliary support assembly comprising:

[0007] A dual-axis motor is fixedly mounted on the inner wall of the support foot, and the output end of the dual-axis motor close to the seat is fixedly connected to the end of the threaded rod;

[0008] A threaded sleeve, wherein the outer wall of the threaded rod is threadedly connected to the threaded sleeve, and the outer wall of the threaded sleeve is fixedly connected to a transmission plate;

[0009] A clamping spring, the side wall of the transmission plate is fixedly connected to the end of the clamping spring, the other end of the clamping spring is fixedly connected to the clamping plate, and the outer wall of the clamping plate on the side away from the seat is fixedly connected to the sleeve.

[0010] Preferably, the outer surface of the threaded sleeve is set to be square, and the interior of the supporting foot is provided with a square groove adapted to the outer surface of the threaded sleeve, so that when the threaded sleeve moves with the rotation of the threaded rod, it can only move in the horizontal direction along the inner wall of the supporting foot, and cannot rotate with the rotation of the threaded rod.

[0011] Preferably, rectangular grooves with a width matching the width of the connection portion between the threaded sleeve and the transmission plate are provided on the upper and lower inner walls of the support foot, thereby further limiting the movement direction of the threaded sleeve.

[0012] Preferably, a square hole with a cross-sectional size matching the size of the end of the supporting foot is opened at the center of the transmission plate, so that the transmission plate can only move in the horizontal direction along the outer wall of the supporting foot.

[0013] Preferably, a transmission assembly is provided inside the bottom end of the supporting foot, and the transmission assembly includes a transmission screw, and the output end of the dual-axis motor on the side away from the seat is fixedly connected to the transmission screw, the outer surface of the transmission screw is threadedly connected to a threaded slider, and the side wall of the threaded slider is hinged to the end of the transmission rod, the inner wall of the supporting foot is rotatably mounted with a support shaft, the other end of the transmission rod is hinged to a mounting slider, and the side wall of the mounting slider is rotatably mounted with a contact wheel.

[0014] Preferably, the inner wall of the transmission rod is provided with a through hole having a diameter matching the outer diameter of the support shaft, and the support shaft is arranged to pass through the through hole, so that the support shaft acts as a fulcrum of a lever on the transmission rod.

[0015] Preferably, a rectangular groove matching the size of the mounting slider is provided inside the bottom end of the supporting foot, so that when the mounting slider is pried by the transmission rod, it drives the contact wheel to move downward until the contact wheel moves to the outside of the supporting foot.

[0016] Preferably, an arresting structure is provided inside the blocking plate, and the arresting structure includes a driving bevel gear, and the end of the threaded rod away from the dual-axis motor is fixedly connected to the driving bevel gear, and a transmission shaft is rotatably installed on the top inner wall of the blocking plate, and the transmission shaft passes through a driven bevel gear, and the driven bevel gear is fixedly connected to the transmission shaft, and the transmission shaft passes through a driving gear, and the driving gear is fixedly connected to the transmission shaft, and the inner wall of the blocking plate is rotatably installed with a driven gear, and the upper surface of the driven gear is hinged with the end of a connecting rod, and the other end of the connecting rod is hinged to one end of a driving rod, and the driving rod The other end is fixedly connected to the side wall of the connecting slide, the other side outer wall of the connecting slide is fixedly connected to the end of the telescopic rod, the other end of the telescopic rod is fixedly connected to the fixing plate, the outer wall of one side of the connecting slide is fixedly connected to the end of a return spring, the other end of the return spring is fixedly connected to the side wall of the fixing plate, the side wall of the connecting slide is fixedly connected to the end of a pull rope, the inner wall of the blocking plate is fixedly installed with the end of a rotating rod, the rotating rod passes through the limiting plate, and the limiting plate is rotatably connected to the rotating rod, and the end of a spiral spring is fixedly connected to the arc-shaped outer wall of the rotating rod.

[0017] Preferably, the driving gear is a quarter gear, and the driven gear is a full gear, so that when the transmission shaft drives the driving gear to rotate, the driving gear will drive the driven gear to rotate, and after the transmission shaft drives the driving gear to rotate forty-five degrees, it will disengage from the driven gear.

[0018] Preferably, the interior of the telescopic rod is hollow, and the diameter of the internal cavity of the telescopic rod is larger than the outer diameter of the pull rope, so that the pull rope can pass through the telescopic rod and be fixedly connected to the side wall of the connecting slide.

[0019] Compared with the prior art, the present invention provides a small electric vehicle that can prevent rollover and has the following features:

[0020] Beneficial effects:

[0021] 1. The small electric vehicle that can prevent rollover is started by a dual-axis motor and coordinated with the rotation of the threaded rod, so that the threaded sleeve drives the transmission plate to slide horizontally along the outer wall of the support foot toward the side of the seat, so as to further compress the clamping spring, thereby making the clamping spring maintain a greater extrusion force on the clamping plate, so that the support foot can maintain a tighter clamping state when swinging to the supporting state, thereby preventing the support foot from shifting sideways due to impact force during the driving of the electric vehicle, affecting the anti-rollover protection effect of the auxiliary support component, and ensuring the driving safety of the electric vehicle.

[0022] 2. In order to prevent the bottom ends of the support legs from rubbing against the ground when the auxiliary support assembly is extended, thereby posing a greater threat to the vehicle's travel, the anti-rollover small electric vehicle is provided with a transmission assembly. When the dual-axis motor is started, the transmission screw and the threaded slider are coordinated to move, so that the transmission rod, the support shaft and the mounting slider arranged in a lever-like manner can drive the contact wheel to move outward until the contact wheel extends from the inside of the support legs and contacts the ground, thereby ensuring the oblique support force for the support legs and the seat, while avoiding large friction between the support legs and the ground that affects the stable and safe travel of the electric vehicle.

[0023] 3. In order to ensure that the supporting legs can be lowered smoothly for protection when the vehicle is in danger of overturning, the small electric vehicle that can prevent rollover is provided with a blocking structure and a driving gear arranged in a quarter gear, so that the driven gear can cooperate with the connecting rod and the driving rod to drive the connecting slide to slide, and the pull rope is pulled to retract the limit plate, so that in an emergency, the limit plate can be retracted in time to release the restriction on the clamping plate, ensuring that the supporting legs can be lowered in time to provide lateral support and protection in an emergency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0025] Figure 2 This is a schematic diagram of a partial three-dimensional structure of a supporting foot of the present invention;

[0026] Figure 3 This is a schematic diagram of a partial cross-sectional structure of the mounting base of the present invention;

[0027] Figure 4 For the present invention Figure 3 Schematic diagram of the local enlarged structure of area A in the middle;

[0028] Figure 5 This is a schematic diagram of a partial cross-sectional structure of a support leg of the present invention;

[0029] Figure 6 This is a schematic cross-sectional view of the end portion of the support leg of the present invention;

[0030] Figure 7 It is a schematic diagram of the three-dimensional structure of the limiting plate of the present invention.

[0031] In the figure: 1. vehicle seat; 2. driving wheel; 3. fixing sleeve; 4. handle; 5. mounting seat; 6. blocking plate; 7. rotating sleeve; 8. supporting foot; 9. limiting column; 10. dual-axis motor; 11. threaded rod; 12. threaded sleeve; 13. transmission plate; 14. holding spring; 15. holding plate; 16. sleeve; 17. transmission screw; 18. threaded slider; 19. transmission rod; 20. supporting shaft; 21. mounting slider; 22. contact wheel; 23. driving bevel gear; 24. transmission shaft; 25. driven bevel gear; 26. driving gear; 27. driven gear; 28. connecting rod; 29. ​​driving rod; 30. connecting slide; 31. telescopic rod; 32. fixing plate; 33. return spring; 34. pull rope; 35. rotating rod; 36. limiting plate; 37. volute spring. DETAILED DESCRIPTION

[0032] like Figure 1-7 As shown, the present invention provides a technical solution: a small electric vehicle that can prevent rollover, including a seat 1, a driving wheel 2 is rotatably mounted on the end of the seat 1, a fixing sleeve 3 is fixedly mounted on the upper surface of the seat 1, the interior of the fixing sleeve 3 is provided with a head shaft, a handle 4 is fixedly mounted on the top side of the head shaft, a mounting seat 5 is fixedly mounted on the side wall of the seat 1, a blocking plate 6 is fixedly mounted on the side wall of the mounting seat 5, the end of a rotating sleeve 7 is rotatably mounted on the lower surface of the blocking plate 6, the end of a supporting foot 8 is fixedly mounted on the arc-shaped outer wall of the rotating sleeve 7, and a limiting column is fixedly mounted on the lower surface of the blocking plate 6. 9. An auxiliary support assembly is provided inside the supporting foot 8, and the auxiliary support assembly includes a dual-axis motor 10. The dual-axis motor 10 is fixedly installed on the inner wall of the supporting foot 8, and the output end of the dual-axis motor 10 close to the seat 1 is fixedly connected to the end of the threaded rod 11, and the outer wall of the threaded rod 11 is threadedly connected to the threaded sleeve 12, and the outer wall of the threaded sleeve 12 is fixedly connected to the transmission plate 13, and the side wall of the transmission plate 13 is fixedly connected to the end of the clamping spring 14, and the other end of the clamping spring 14 is fixedly connected to the clamping plate 15, and the outer wall of the clamping plate 15 away from the seat 1 is fixedly connected to the sleeve 16.

[0033] In one embodiment of the present invention, a mobile power source and a driving device are provided inside the seat 1, so that the mobile power source can provide electricity to the driving device, thereby driving the driving wheel 2 to rotate. At the same time, the bottom end of the head shaft is rotatably installed with a front wheel, so as to cooperate with the handle 4 to control the movement of the small electric vehicle. Furthermore, there are two groups of auxiliary support components, and the two groups of auxiliary support components are symmetrically arranged with the central axis of the seat 1 as the symmetry axis, so that the small electric vehicle can be auxiliary supported and protected no matter which side it tilts to during travel. Specifically, a spirit level and a signal processor are provided inside the seat 1, and the signal processor is electrically connected to the dual-axis motor 10. When the spirit level provided inside the seat 1 senses that the seat 1 has tilted When the tilt angle reaches a certain degree, it transmits a signal to the signal processor, and controls the dual-axis motor 10 to start through the signal processor, so that the auxiliary support assembly can provide lateral support and protection for the vehicle seat 1. At the same time, there are two groups of blocking plates 6, and the two groups of blocking plates 6 are symmetrically arranged on the upper and lower sides of the blocking plates 6 with the central axis of the mounting seat 5 as the symmetry axis, and the sides of the two groups of blocking plates 6 close to each other are in contact with the upper and lower end surfaces of the rotating sleeve 7. In addition, the bottom end of the supporting foot 8 is provided with a curved portion, thereby increasing the contact area when the bottom end of the supporting foot 8 contacts the ground, so that the supporting foot 8 can provide stable supporting force for the electric vehicle when the vehicle stops. Furthermore, the limiting column 9 is arranged at the center of the blocking plate 6 near the front end of the seat 1, thereby avoiding The rotation sleeve 7 is prevented from causing the support foot 8 to rotate excessively, thereby affecting the stable supporting effect of the support foot 8. At the same time, the outer surface of the threaded sleeve 12 is set to be square, and the interior of the support foot 8 is provided with a square groove that matches the outer surface of the threaded sleeve 12, so that the threaded sleeve 12 can only move in the horizontal direction along the inner wall of the support foot 8 when it moves with the rotation of the threaded rod 11, and cannot rotate with the rotation of the threaded rod 11. In addition, the upper and lower inner walls of the support foot 8 are provided with rectangular grooves whose width matches the width of the connection between the threaded sleeve 12 and the transmission plate 13, so as to further limit the movement direction of the threaded sleeve 12. At the same time, a square hole with a cross-sectional size that matches the size of the end of the support foot 8 is provided at the center of the transmission plate 13. The transmission plate 13 can only move in the horizontal direction along the outer wall of the support foot 8. Furthermore, the clamping spring 14 is sleeved on the outer side of the support foot 8, so that the support foot 8 can guide and limit the deformation direction of the clamping spring 14. Specifically, the clamping spring 14 can only deform in the horizontal direction when it is squeezed or stretched, and will not be deflected in the vertical direction due to its own gravity, so that the clamping spring 14 can always provide a stable transmission effect for the transmission plate 13. In addition, the center of the clamping plate 15 and the sleeve 16 are provided with a square hole that is adapted to the cross-sectional size of the end of the support foot 8, so that the clamping plate 15 and the sleeve 16 can slide along the outer surface of the support foot 8. At the same time,The sleeve 16 has a circular groove with a diameter larger than that of the spring 14, so that the sleeve 16 can be placed on the outside of the spring 14 to prevent the spring 14 from being affected by the outside, so that the sleeve 16 can protect the spring 14.

[0034] In addition, in order to prevent the bottom end of the support foot 8 from rubbing against the ground when the auxiliary support assembly is extended, thereby posing a greater threat to the vehicle's driving, a transmission assembly is provided inside the bottom end of the support foot 8, and the transmission assembly includes a transmission screw 17. The output end of the dual-axis motor 10 on the side away from the seat 1 is fixedly connected to the transmission screw 17, and the outer surface of the transmission screw 17 is threadedly connected to a threaded slider 18, and the side wall of the threaded slider 18 is hinged to the end of the transmission rod 19, and the inner wall of the support foot 8 is rotatably mounted with a support shaft 20, and the other end of the transmission rod 19 is hinged to a mounting slider 21, and the side wall of the mounting slider 21 is rotatably mounted with a contact wheel 22.

[0035] In the embodiment of the present invention, the threaded slider 18 is slidably mounted on the bottom inner wall of the square groove opened on the inner wall of the support foot 8, so that the threaded slider 18 can only slide in the horizontal direction along the inner surface of the square groove when the transmission screw 17 rotates. In addition, the hinge point of the transmission rod 19 and the threaded slider 18 is set on the outer wall of the threaded slider 18 away from the seat 1. At the same time, the inner wall of the transmission rod 19 is provided with a through hole with a diameter adapted to the outer diameter of the support shaft 20, and the support shaft 20 is arranged through the through hole, so that the support shaft 20 plays the role of a fulcrum of a lever on the transmission rod 19, so that the threaded slider 18 can slide horizontally. When the vehicle is moved in the right direction, the support shaft 20 serving as a fulcrum is used to pry the mounting slider 21 to slide along the inner wall of the supporting foot 8. Furthermore, a rectangular groove matching the size of the mounting slider 21 is provided inside the bottom end of the supporting foot 8, so that the mounting slider 21 will drive the contact wheel 22 to move downward when pried by the transmission rod 19, until the contact wheel 22 moves to the outside of the supporting foot 8, so that when the supporting foot 8 swings downward, the contact wheel 22 will contact the ground, ensuring the oblique support force for the supporting foot 8 and the seat 1 while avoiding large friction between the supporting foot 8 and the ground, which may affect the stable and safe driving of the electric vehicle.

[0036] In addition, in order to ensure that the supporting legs 8 can be lowered smoothly for protection when the vehicle encounters the danger of overturning, an arresting structure is provided inside the arresting plate 6, which includes a driving bevel gear 23. The end of the threaded rod 11 away from the dual-axis motor 10 is fixedly connected to the driving bevel gear 23. The top inner wall of the arresting plate 6 is rotatably installed with a transmission shaft 24, and the transmission shaft 24 passes through a driven bevel gear 25, and the driven bevel gear 25 is fixedly connected to the transmission shaft 24. The transmission shaft 24 passes through a driving gear 26, and the driving gear 26 is fixedly connected to the transmission shaft 24. The inner wall of the arresting plate 6 is rotatably installed with a driven gear 27, and the upper surface of the driven gear 27 is hinged to the end of a connecting rod 28, and the other end of the connecting rod 28 is hinged to a belt One end of the moving rod 29 and the other end of the driving rod 29 are fixedly connected to the side wall of the connecting slide 30, the other side outer wall of the connecting slide 30 is fixedly connected to the end of the telescopic rod 31, the other end of the telescopic rod 31 is fixedly connected to the fixing plate 32, the outer wall of one side of the connecting slide 30 fixedly connected to the telescopic rod 31 is fixedly connected to the end of the return spring 33, the other end of the return spring 33 is fixedly connected to the side wall of the fixing plate 32, the side wall of the connecting slide 30 is fixedly connected to the end of the pull rope 34, the inner wall of the blocking plate 6 is fixedly installed with the end of the rotating rod 35, the rotating rod 35 passes through the limiting plate 36, and the limiting plate 36 is rotatably connected to the rotating rod 35, and the end of the spiral spring 37 is fixedly connected to the arc-shaped outer wall of the rotating rod 35.

[0037] In an embodiment of the present invention, the threaded slider 18 and the threaded sleeve 12 have opposite thread directions, so that when the dual-axis motor 10 is started, as the threaded rod 11 and the transmission screw 17 rotate, the movement directions of the threaded sleeve 12 and the threaded slider 18 remain the same. Furthermore, the driven bevel gear 25 meshes with the active bevel gear 23 to achieve transmission, and the active gear 26 is a quarter gear, while the driven gear 27 is a full gear, so that when the transmission shaft 24 drives the active gear 26 to rotate, the active gear 26 will drive the driven gear 27 to rotate, and after the transmission shaft 24 drives the active gear 26 to rotate forty-five degrees, it will disengage from the driven gear 27. Furthermore, the connecting slide 30 is slidably mounted on the inner wall of the blocking plate 6. At the same time, the return spring 33 is sleeved on the outer side of the telescopic rod 31, so that the telescopic rod 31 can guide and limit the deformation of the return spring 33. Specifically, the return spring 33 can only move horizontally along the outer wall of the telescopic rod 31 when it is squeezed or stretched. The cam 36 is provided with a plurality of support members 37 and 38, and the support members 37 are provided with a plurality of support members 37. The support members 37 are provided with support members 37 and 38, respectively.

[0038] When the electric vehicle is in use, the level meter provided inside the seat 1 sends out an alarm, so that the signal processor can control the dual-axis motor 10 to start. At this time, the threaded rod 11 is rotated to make the threaded sleeve 12 drive the transmission plate 13 to slide along the outer wall of the support foot 8 toward the side of the seat 1 in the horizontal direction, so as to further compress the clamping spring 14, so that the clamping spring 14 maintains a greater squeezing force on the clamping plate 15, so that the support foot 8 can maintain a tighter clamping state when it swings to the supporting state, thereby avoiding the support foot 8 from shifting sideways due to the impact force during the driving of the electric vehicle, affecting the anti-rollover protection effect of the auxiliary support component, and ensuring the driving safety of the electric vehicle. In addition, in order to prevent the bottom end of the support foot 8 from rubbing against the ground when the auxiliary support component is extended, thereby posing a greater threat to the driving of the vehicle, a transmission component is provided so that when the dual-axis motor 10 is started, the transmission component is cooperated with the transmission component to start the dual-axis motor 10. The movement of the movable screw 17 and the threaded slider 18 enables the transmission rod 19, the support shaft 20 and the mounting slider 21 arranged in the form of a lever to drive the contact wheel 22 to move outward until the contact wheel 22 extends out of the inside of the support foot 8 and contacts the ground, ensuring the oblique support force for the support foot 8 and the vehicle seat 1 while preventing the support foot 8 from generating large friction with the ground and affecting the stable and safe driving of the electric vehicle. At the same time, in order to ensure that the support foot 8 can be smoothly lowered for protection when the vehicle encounters the risk of overturning, a blocking structure is provided, which cooperates with the driving gear 26 arranged in a quarter gear, so that the driven gear 27 can cooperate with the connecting rod 28 and the driving rod 29 to drive the connecting slide 30 to slide, so as to pull the pull rope 34 to retract the limit plate 36, so that in an emergency, the limit plate 36 can be retracted in time to release the restriction on the clamping plate 15, ensuring that the support foot 8 can be lowered in time to provide lateral support protection in an emergency.

[0039] The above generally describes the present invention in detail. However, it is obvious to those skilled in the art that modifications or improvements may be made based on the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A small electric vehicle capable of preventing rollover, comprising a seat (1), a driving wheel (2) being rotatably mounted on the end of the seat (1), a fixing sleeve (3) being fixedly mounted on the upper surface of the seat (1), a head shaft being provided inside the fixing sleeve (3), a handle (4) being fixedly mounted on the top side of the head shaft, a mounting seat (5) being fixedly mounted on the side wall of the seat (1), a blocking plate (6) being fixedly mounted on the side wall of the mounting seat (5), an end of a rotating sleeve (7) being rotatably mounted on the lower surface of the blocking plate (6), an end of a supporting foot (8) being fixedly mounted on the arc-shaped outer wall of the rotating sleeve (7), and a limiting column (9) being fixedly mounted on the lower surface of the blocking plate (6), characterized in that: An auxiliary support assembly is provided inside the support foot (8), and the auxiliary support assembly comprises: A dual-axis motor (10), wherein the dual-axis motor (10) is fixedly mounted on the inner wall of the support foot (8), and the output end of the dual-axis motor (10) close to the side of the vehicle seat (1) is fixedly connected to the end of the threaded rod (11); A threaded sleeve (12), wherein the outer wall of the threaded rod (11) is threadedly connected to the threaded sleeve (12), and the outer wall of the threaded sleeve (12) is fixedly connected to a transmission plate (13); A holding spring (14), the side wall of the transmission plate (13) is fixedly connected to the end of the holding spring (14), the other end of the holding spring (14) is fixedly connected to the holding plate (15), and the outer wall of the holding plate (15) away from the vehicle seat (1) is fixedly connected to the sleeve (16); The blocking plate (6) is provided with a blocking structure inside, and the blocking structure includes a driving bevel gear (23). The end of the threaded rod (11) away from the dual-axis motor (10) is fixedly connected to the driving bevel gear (23). The top inner wall of the blocking plate (6) is rotatably mounted with a transmission shaft (24). The transmission shaft (24) is penetrated by a driven bevel gear (25), and the driven bevel gear (25) is fixedly connected to the transmission shaft (24). The transmission shaft (24) is penetrated by a driving gear (26), and the driving gear (26) is fixedly connected to the transmission shaft (24). The inner wall of the blocking plate (6) is rotatably mounted with a driven gear (27). The upper surface of the driven gear (27) is hinged to the end of a connecting rod (28), and the other end of the connecting rod (28) is hinged to one end of a driving rod (29). The driving rod (29) The other end is fixedly connected to the side wall of the connecting slide (30), the other side outer wall of the connecting slide (30) is fixedly connected to the end of the telescopic rod (31), the other end of the telescopic rod (31) is fixedly connected to the fixed plate (32), the outer wall of one side of the connecting slide (30) fixedly connected to the telescopic rod (31) is fixedly connected to the end of the return spring (33), the other end of the return spring (33) is fixedly connected to the side wall of the fixed plate (32), the side wall of the connecting slide (30) is fixedly connected to the end of the pull rope (34), the inner wall of the blocking plate (6) is fixedly mounted with the end of a rotating rod (35), the rotating rod (35) passes through the limiting plate (36), and the limiting plate (36) is rotatably connected to the rotating rod (35), and the end of the spiral spring (37) is fixedly connected to the arc-shaped outer wall of the rotating rod (35).

2. The small electric vehicle capable of preventing rollover according to claim 1, characterized in that: The outer surface of the threaded sleeve (12) is arranged to be square, and the interior of the supporting foot (8) is provided with a square groove adapted to the outer surface of the threaded sleeve (12).

3. The small electric vehicle capable of preventing rollover according to claim 1, characterized in that: The inner walls of the upper and lower sides of the support foot (8) are provided with rectangular grooves whose width matches the width of the connection portion between the threaded sleeve (12) and the transmission plate (13).

4. The small electric vehicle capable of preventing rollover according to claim 1, characterized in that: A square hole having a cross-sectional size that matches the size of the end of the supporting foot (8) is provided at the center of the transmission plate (13).

5. The small electric vehicle capable of preventing rollover according to claim 1, characterized in that: A transmission assembly is provided inside the bottom end of the support foot (8), and the transmission assembly includes a transmission screw (17). The output end of the dual-axis motor (10) on the side away from the vehicle seat (1) is fixedly connected to the transmission screw (17), the outer surface of the transmission screw (17) is threadedly connected to a threaded slider (18), and the side wall of the threaded slider (18) is hinged to the end of a transmission rod (19). The inner wall of the support foot (8) is rotatably mounted with a support shaft (20), and the other end of the transmission rod (19) is hinged to a mounting slider (21), and the side wall of the mounting slider (21) is rotatably mounted with a contact wheel (22).

6. The small electric vehicle capable of preventing rollover according to claim 5, characterized in that: The inner wall of the transmission rod (19) is provided with a through hole having a diameter matching the outer diameter of the support shaft (20), and the support shaft (20) is arranged to pass through the through hole.

7. The small electric vehicle capable of preventing rollover according to claim 5, characterized in that: A rectangular sliding groove having a size matching that of the mounting slide block (21) is provided inside the bottom end of the supporting foot (8).

8. The small electric vehicle capable of preventing rollover according to claim 1, characterized in that: The driving gear (26) is a quarter gear, while the driven gear (27) is a full gear.

9. The small electric vehicle capable of preventing rollover according to claim 1, characterized in that: The interior of the telescopic rod (31) is hollow, and the diameter of the internal cavity of the telescopic rod (31) is larger than the outer diameter of the pull rope (34).

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