FOLDABLE ELECTRIC TRAILER FOR TRANSPORTING PEOPLE

Abstract

1. A foldable electric trailer for transporting people, characterized in that it comprises a foldable body, which folds and retracts along the longitudinal direction by means of a fold, in whose upper front part a seating device is arranged, and whose lower front part is connected to a steering rod component; said steering rod component is connected to at least one first wheel; at least two second wheels are arranged at one end of the foldable body away from the steering rod component; a power supply for supplying electrical power to the first wheel and / or the second wheels, and a controller for the operation of the first wheel and / or the second wheels are also arranged on the foldable body.The folding body comprises: A first frame and a second frame; one end of the first frame is connected to one end of the second frame; on each of the two sides of the first frame there is a support component, and each support component is connected at its two ends to support components; when the first frame and the second frame are folded and retracted, they can simultaneously actuate the folding of the support components on both sides. 2. Folding electric trailer for transporting people, according to claim 1, characterized in that inside both sides of one end of the first frame, telescopic internal bars are respectively slidably arranged, said telescopic internal bars being able to extend outside the first frame, thus actuating the steering bar component away from the first frame. 3. Folding electric trailer for transporting people, according to claim 1, characterized in that the steering bar component comprises a steering crossbar and a steering bar; the first wheel is arranged below said steering crossbar, in the central part of which a swivel bar is passed, which can rotate horizontally with respect to the steering crossbar, the lower part of the swivel bar being connected to the first wheel, and the steering bar actuating the rotation of the first wheel through the swivel bar. 4. Folding electric trailer for transporting people, according to claim 3, characterized in that the steering bar component comprises a cover bar; one end of said cover bar is rotatably connected to the top of the swivel bar, the steering bar is slidably arranged within the cover bar, and the steering cross bar is rotatably connected to the telescopic inner bar. 5. A foldable electric trailer for transporting people, according to claim 2, characterized in that a support frame is connected between the two support components at the same end of the two support components. Horizontal adapter bars are connected to the two upper ends of each support component respectively, and the two upper ends of the support component are connected to the support components via said adapter bars. 6. Folding electric trailer for transporting people, according to claim 3, characterized in that the first wheel is provided with two units, the first two wheels are arranged respectively at the two ends of the steering crossbar, the end of the steering bar furthest from the steering bar is articulated to a steering connecting rod, and the two ends of said connecting rod are rotatably connected to the first two wheels. 7. Folding electric trailer for transporting people, according to claim 3, characterized in that in the lower parts of the two support components adjacent to the steering bar component there are first vertical guides, between which a pedal is arranged, on both sides of the lower part of said pedal there are first sliding axles, and the lower part of the pedal is connected to the first guides through said sliding axles. 8. Folding electric trailer for transporting people, according to claim 7, characterized in that, inside the lower part of the bottom surface of the pedal, at least one folding limit pin is arranged, used to limit the displacement of the steering rod component when said pedal is in the folded state, at least one hole for a pin adapted to the folding limit pin is open on the upper surface of the steering crossbar, and an exhaust hole adapted to the swivel rod is also open in the center of the upper part of the pedal. 9. Folding electric trailer for transporting people, according to claim 8, characterized in that inside the upper part of the pedal surface there is at least one deployment limit pin used to limit the displacement of the steering rod component when said pedal is in the deployed state, and said deployment limit pin is adapted to the pin hole. 10. Folding electric trailer for transporting people, according to claim 4, characterized in that on the upper part of the swivel bar there are spaced swivel connection lugs arranged between which an insertion hole is open, at the lower end of the cover bar there is a protrusion arranged between the two said swivel connection lugs and which is rotatably connected by means of a swivel shaft, inside the lower end of the cover bar there is an articulated swivel limiting element, configured so that with the compression by the steering bar of said swivel limiting element, the protrusion is locked by the end of the limiter in the insertion hole, thus limiting the rotation of the cover bar with respect to the swivel bar. 11. Folding electric trailer for transporting people, according to claim 4, characterized in that a handle ring is arranged on the upper part of the steering bar, folding slots are opened on both sides of said ring, grip bars are rotatably connected at the same end of said slots, and one of which is electrically connected to the controller, and intended for controlling the operating speed of the first wheel and / or the second wheels. 12. Folding electric trailer for transporting people, according to claim 11, characterized in that corresponding limiting holes are arranged in the side wall of the steering bar and in the side wall of the cover bar, a limiting locking pin is also arranged inside the steering bar, which is adapted to said limiting holes, and a button for the locking pin is arranged inside the lower part of the handle ring, configured for actuating the extension or retraction of said pin. 13. Folding electric trailer for transporting people, according to claim 3, characterized in that a braking device is also arranged on the steering crossbar, which is connected to the first wheel. 14. Folding electric trailer for transporting people, according to claim 3, characterized in that in each rotating connection position between the telescopic inner bar and the steering crossbar, a rotation limiting sleeve is also concentrically mounted, the end of which, facing the steering crossbar, is provided with a sleeve return spring, and under the force exerted by the return spring, the rotation limiting sleeve is in the connection position between the telescopic inner bar and the steering crossbar. 15. Folding electric trailer for transporting people, according to claim 1, characterized in that the seating device is made of rigid material, the two ends of said device are rotatably connected to both sides of the front upper part of the folding body, and the seating device can be flipped forward or backward with respect to the folding body. 16. Folding electric trailer for transporting people, according to claim 1, characterized in that the seating device is made of flexible material, and is arranged inside the upper front part of the folding body, and in the front and / or rear part of said seating device one or more support bars connected to said folding body are arranged. 17. Folding electric trailer for transporting people, according to claim 2, characterized in that the end of the telescopic inner bar is away from the second frame and rotatably connected to the steering bar component.

Description

A new type of manned folding electric trailer Technical Field

[0001] The utility model relates to the technical field of folding trailers, in particular to a novel passenger-carrying folding electric trailer. Background Art

[0002] A foldable trailer is a foldable and towable cargo vehicle. It is widely used in transporting things because of its simplicity of use, ability to carry cargo, ease of storage, and time and labor saving. It is now often used in outdoor activities or short-distance transportation.

[0003] Traditional trailers need to be dragged by manpower, which is time-consuming and labor-intensive, especially when carrying cargo uphill. For this reason, the existing technology has also designed a power-assisted trailer with the patent number CN202220922980.0 (power-assisted trailer). It achieves the electric power-assisted effect when towing by setting electric wheels and control devices on the vehicle body, thereby improving the labor-saving and convenience of the trailer when in use. However, this solution still has disadvantages. Although it can save energy to a certain extent, its use still requires people to pull it in front. This method can only reduce the force of the user to drag the trailer, but due to structural limitations of this type of trailer, it cannot carry people, so that the user inevitably needs to walk, which easily causes fatigue and affects the user experience.

[0004] Therefore, it is urgent to design a new type of manned folding electric trailer to overcome the deficiencies of one or more of the above-mentioned prior arts. Summary of the Invention

[0005] The technical solution adopted by the present invention to achieve the above-mentioned technical purpose is: a new type of manned folding electric trailer, characterized in that it includes: a folding body, the folding body is folded in half from the front and rear directions, a seat device is provided on the top front end of the folding body, a steering rod assembly is connected to the bottom front end of the folding body, the steering rod assembly is connected to at least one first wheel, at least two second wheels are provided on the end of the folding body away from the steering rod assembly, and the folding body is also provided with a power supply for providing power to the first wheel and / or the second wheel and a controller for controlling the operation of the first wheel and / or the second wheel.

[0006] In a preferred embodiment, the folding body includes: a first shelf and a second shelf; one end of the first shelf is connected to one end of the second shelf, each side of the first shelf is provided with a bracket assembly, and the two ends of the bracket assembly on each side are respectively connected to a support assembly, and telescopic inner rods are respectively slidably provided on both sides of one end of the first shelf, and the telescopic inner rods can extend out of the first shelf to drive the direction rod assembly away from the first shelf.

[0007] In a preferred embodiment, telescopic inner rods are slidably provided on both sides of one end of the first shelf, and the end of the telescopic inner rod away from the second shelf is rotatably connected to the direction rod assembly.

[0008] In a preferred embodiment, the bottom surface of one end of the first shelf connected to the second shelf is open, and the end portion of the second shelf adjacent to the first shelf is inserted into the first shelf and rotatably connected to the first shelf.

[0009] In a preferred embodiment, the steering rod assembly includes: a steering cross bar, a steering rod, and a sleeve rod; the first wheel is arranged below the steering cross bar, a turning rod is passed through the middle of the steering cross bar, the turning rod can rotate horizontally relative to the steering cross bar, one end of the sleeve rod is rotatably connected to the top of the turning rod, the steering rod is slidably arranged in the sleeve rod, the steering cross bar is rotatably connected to the telescopic inner rod, the bottom of the turning rod is connected to the first wheel, and the steering rod drives the first wheel to turn through the turning rod.

[0010] In a preferred embodiment, a support frame is connected between the two support assemblies at the same end of the two bracket assemblies.

[0011] In a preferred embodiment, the tops at both ends of the bracket assembly on each side are respectively connected to horizontal transfer rods, and the tops at both ends of the bracket assembly are connected to the support assembly through the transfer rods.

[0012] In a preferred embodiment, there are two first wheels, which are respectively arranged at the two ends of the direction cross bar, and the end of the turning rod away from the sleeve rod is movably connected to a direction connecting rod, and the two ends of the direction connecting rod are respectively rotatably connected to the two first wheels.

[0013] In a preferred embodiment, a vertical first slide groove is respectively provided at the bottom ends of the two support assemblies adjacent to the direction rod assembly, a pedal is provided between the two first slide grooves, and a first sliding shaft is respectively provided on both sides of the bottom end of the pedal, and the bottom end of the pedal is slidably connected to the first slide groove through the first sliding shaft.

[0014] In a preferred embodiment, at least one folding limit pin is provided at the bottom end of the bottom surface of the pedal for limiting the translation of the steering rod assembly when the pedal is in the folded state, at least one pin hole is provided on the top surface of the steering cross bar for matching with the folding limit pin, and an avoidance hole is also provided in the middle of the top end of the pedal for matching with the turning rod.

[0015] In a preferred embodiment, at least one deployment limit pin is provided in the top end of the bottom surface of the pedal for limiting the translation of the steering rod assembly when the pedal is deployed, and the deployment limit pin is adapted to the pin hole.

[0016] In a preferred embodiment, the top of the turning rod is provided with spaced turning connecting ears, and a socket is opened between the two turning connecting ears. The bottom end of the sleeve rod is provided with a protrusion, which is inserted between the two turning connecting ears and rotatably connected through a rotating shaft. A folding limiter is movably provided in the bottom end of the sleeve rod. When the direction rod squeezes the folding limiter, one end of the folding limiter passes through the protrusion and is inserted into the socket.

[0017] In a preferred embodiment, a handle ring is provided on the top of the steering rod, and folding grooves are respectively provided on both sides of the handle ring. A grip rod is rotatably connected to the same end of the two folding grooves, and one of the grip rods is electrically connected to the controller for controlling the running speed of the first wheel and / or the second wheel.

[0018] In a preferred embodiment, a limiting device is further provided at one end of the gripping rod connected to the folding groove, for limiting the gripping rod when the gripping rod is received in the folding groove or when the gripping rod is horizontal relative to the handle ring.

[0019] In a preferred embodiment, the handle ring is further provided with a plurality of control buttons and a display device, and the plurality of control buttons and the display device are electrically connected to the controller via wires.

[0020] In a preferred embodiment, the side walls of the steering rod and the side walls of the sleeve rod are respectively provided with corresponding limiting holes, and a limiting pin is also provided in the steering rod, and the limiting pin is adapted to the limiting hole. A pin button is provided in the bottom end of the handle ring, and the pin button drives the limiting pin to extend or retract, and a braking device is also provided on the steering cross bar, and the braking device is connected to the first wheel.

[0021] In a preferred embodiment, each of the rotational connections between the telescopic inner rod and the directional cross bar is also provided with a folding limit sleeve, and the folding limit sleeve is provided with a sleeve return spring at one end facing the directional cross bar. The folding limit sleeve is located at the connection between the telescopic inner rod and the directional cross bar under the action of the sleeve return spring.

[0022] In a preferred embodiment, the seat device is made of a hard material, and both ends of the seat device are rotatably connected to both sides of the front top of the folding body respectively, and the seat device can be flipped forward or backward relative to the folding frame.

[0023] In a preferred embodiment, the seat device is made of a flexible material, is arranged in the front top of the folding vehicle body, and has support rods connected to the folding vehicle body on the front and / or rear sides of the seat device.

[0024] The beneficial effects of the present invention are as follows: by arranging a seat device at the top front end of the foldable vehicle body, a sitting function is realized, making the use of the electric trailer more labor-saving; at the same time, the steering rod assembly is slidably connected to the foldable vehicle body so that the steering rod assembly can be extended, thereby increasing the distance between the supporting force point of the seat device and the supporting point of the first wheel, thereby improving the stability of manned travel and improving safety performance; and a pedal is provided at the front end of the foldable vehicle body for easy foot placement and standing travel, thereby increasing the diversity of use of the electric trailer, and the electric trailer can be folded and stored, thereby improving the convenience of carrying. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic structural diagram of the present invention;

[0026] Figure 2 is an exploded view of the folding vehicle body of the present invention;

[0027] Figure 3 is a schematic structural diagram of the pedal of the present invention;

[0028] Figure 4 is a schematic structural diagram of the direction rod assembly of the present invention;

[0029] Figure 5 is a schematic structural diagram of the direction rod of the utility model;

[0030] Figure 6 is a cross-sectional view of the folding limiter of the present invention;

[0031] FIG7 is a diagram of the utility model in towing use state I;

[0032] Figure 8 is a diagram II of the utility model in towing use;

[0033] Figure 9 is a diagram of the utility model in a folded state;

[0034] Figure 10 is a circuit diagram of the controller of the present invention;

[0035] FIG11 is an electrical connection block diagram of the present utility model.

[0036] In the picture:

[0037] 1. Folding vehicle body; 11. First shelf; 12. Second shelf; 13. Bracket assembly; 131. Support frame; 132. Adapter rod; 133. First chute; 134. Second chute; 14. Support assembly; 15. Second wheel; 16. Power supply; 17. Controller; 18. Telescopic inner rod;

[0038] 2. Steering bar assembly; 21. Steering crossbar; 211. Turning bar; 212. Steering connecting rod; 213. Pin hole; 214. Turning connecting ear; 215. Insertion hole; 216. Braking device; 217. Folding limit sleeve; 218. Guide column; 219. Extension block; 22. Steering bar; 221. Handle ring; 222. Folding slot; 223. Grip; 224. Limiting device; 225. Control button; 226. Display device; 227. Limiting hole; 228. Limiting latch; 229. Latch button; 23. Sleeve rod; 231. Protrusion; 232. Folding limit member; 233. Folding limit return spring; 234. Rotating shaft sliding hole; 24. First wheel;

[0039] 3. Pedal; 31. First slide shaft; 32. Second slide shaft; 33. Folding limit pin; 34. Expanding limit pin; 35. Avoidance hole;

[0040] 4. Seating device. DETAILED DESCRIPTION

[0041] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the following detailed description of specific embodiments of the present invention is provided in conjunction with the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0042] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms, "connection", and "installation" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. In addition, "communication" can be a direct connection or an indirect connection through an intermediate medium. Here, "fixed" means that the two are connected to each other and the relative position relationship after connection remains unchanged. The directional terms mentioned in the embodiments of the present invention, such as "inside", "outside", "top", "bottom", etc., are only reference to the directions of the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0043] In the embodiments of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include one or more of the features.

[0044] In the embodiments of the present invention, "and / or" is simply a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0045] References to "one embodiment" or "some embodiments" in this specification mean that one or more embodiments of the present invention include a particular feature, structure or characteristic described in conjunction with that embodiment. Thus, phrases such as "in one embodiment," "in some embodiments," "in other embodiments," and "in other embodiments" that appear in different places in this specification do not necessarily refer to the same embodiment, but rather mean "one or more but not all embodiments," unless otherwise specifically emphasized. The terms "comprise," "include," "have," and their variations all mean "including but not limited to," unless otherwise specifically emphasized. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0046] As shown in Figures 1-11, the present invention provides a novel foldable electric trailer for carrying people, comprising: a foldable body 1, the foldable body 1 being folded in half from the front-to-back direction, a seat device 4 being provided at the top of the front end of the foldable body 1, a steering rod assembly 2 being connected to the bottom of the front end of the foldable body 1, the steering rod assembly 2 being connected to at least one first wheel 24, at least two second wheels 15 being provided at one end of the foldable body 1 away from the steering rod assembly 2, a power supply 16 for providing power to the first wheel 24 and / or the second wheel 15, and a controller 17 for controlling the operation of the first wheel 24 and / or the second wheel 15 being further provided on the foldable body 1;

[0047] Specifically, the folding body 1 adopts a folding trailer that folds in the front and rear directions. A seat device 4 is rotatably provided on the top of the front end of the folding body 1. The seat device 4 is used to enable the user to sit on the folding body 1. The steering rod assembly 2 is connected to the bottom of the folding body 1, and the bottom of the steering rod assembly 2 is also provided with at least one first wheel 24. A second wheel 15 fixedly connected to the folding body 1 is provided on both sides of the end of the folding body 1 away from the steering rod assembly 2. A stable triangular structure is formed between the first wheel 24 and the second wheel 15 to ensure that the folding body 1 can travel stably when loaded with cargo and reduce the possibility of rollover. Preferably, in this embodiment, the first wheel 24 is a movable setting so that it can rotate to control In the direction of travel, the second wheel 15 is fixed and cannot rotate, so as to avoid the situation where the direction cannot be controlled during driving; a controller 17 for controlling the operation of the first wheel 24 and / or the second wheel 15 and a power supply 16 for providing electrical energy to the first wheel 24 and / or the second wheel 15 are also provided at the front end of the folding body 1, so that the first wheel 24 and / or the second wheel 15 can operate independently under the control of the controller 17, drive the folding body 1 to move forward, and realize the electric self-propelled effect. At the same time, the direction rod assembly 2 is used to control the steering of the first wheel 24. The user can sit on the seat device 4, thereby realizing the function of manned driving, so that the folding trailer does not require manual traction when in use, thereby improving the convenience of use and reducing the labor intensity of the user.

[0048] It should be pointed out that the first wheel 24 and the second wheel 15 can both be powered drive wheels or one of the first wheel 24 and the second wheel 15 can be selected as the drive wheel, which can be determined according to actual usage requirements. In this embodiment, the first wheel 24 is preferably selected as the drive wheel because it is located at the same end as the steering rod assembly 2, and the routing is more convenient and shorter. At the same time, the front-wheel drive form makes it easier to pass through rugged roads, such as over bumps, and has better passability. At the same time, the front-wheel drive form has stronger traction and better driving effect with large loads.

[0049] Among them, the driving wheel is an electric wheel with a motor inside in the prior art. For specific reference, such as the driving wheels of electric bicycles, electric motorcycles, etc., so the specific structure of the electric wheel will not be described here.

[0050] Furthermore, the folding body 1 includes: a first shelf 11 and a second shelf 12; one end of the first shelf 11 is connected to one end of the second shelf 12, each side of the first shelf 11 is provided with a bracket assembly 13, and the two ends of the bracket assembly 13 on each side are respectively connected to a support assembly 14, and a telescopic inner rod 18 is slidably provided in each end of the first shelf 11, and the end of the telescopic inner rod 18 away from the second shelf 12 is rotatably connected to the direction rod assembly 2, and the telescopic inner rod 18 can extend out of the first shelf 11 to drive the direction rod assembly 2 away from the first shelf 11;

[0051] Specifically, the folding vehicle body 1 includes: a first shelf 11, a second shelf 12, a bracket assembly 13, and a support assembly 14; there are four support assemblies 14, which are arranged in a rectangular shape, and the first shelf 11 and the second shelf 12 are both located in the rectangle surrounded by the support assemblies 14, and one end of the first shelf 11 and the second shelf 12 are hinged, and the two sides of the ends of the first shelf 11 and the second shelf 12 away from each other are rotatably connected to the corresponding support assemblies 14, and at the same time, a bracket assembly 13 is connected between the two support assemblies 14 on the same side, and the bracket assembly 13 is in an "X" shape. When the two ends of the bracket assembly 13 are squeezed, it can be folded toward the middle, so that when the first shelf 11 and the second shelf 12 are folded and retracted relative to each other, it can drive the bracket assemblies 13 on both sides to fold at the same time, and the bracket assembly 13 can share the gravity borne by the first shelf 11 and the second shelf 12 when unfolded; preferably, in order to reduce the overall weight of the folding vehicle body 1 The folding carriage 11 and the second carriage 12 are of a hollow structure and a telescopic inner rod 18 is provided on both sides of the end of the first carriage 11 away from the second carriage 12. The telescopic inner rod 18 is smaller than the length of the first carriage 11 and the telescopic inner rod 18 can be partially extended out of the first carriage 11 when needed. The front end of the telescopic inner rod 18 is rotatably connected to the direction rod assembly 2. The telescopic inner rod 18 can be rotated vertically relative to the direction rod assembly 2, so that when the first carriage 11 and the second carriage 12 are folded in half, the telescopic inner rod 18 can be driven to fold relative to the direction rod assembly 2. At the same time, when the telescopic inner rod 18 is extended, the direction rod assembly 2 and the first wheel 24 can be pushed away from the first carriage 11, wherein the maximum extension distance of the telescopic inner rod 18 is less than its own length, so as to realize the lifting of the folding carriage body 1 by the cooperation of the telescopic inner rod 18 and the first carriage 11. At this time, when the user sits on the seat device 4, it can be better supported.

[0052] It should be noted that a bag cloth (not shown in the figure) is further provided inside the folding vehicle body 1 to surround the articles placed inside the folding vehicle body to prevent them from falling.

[0053] Furthermore, the bottom surface of one end of the first shelf 11 connected to the second shelf 12 is open, and the end portion of the second shelf 12 adjacent to the first shelf 11 is inserted into the first shelf 11 and rotatably connected to the first shelf 11;

[0054] Specifically, the bottom surface of one end where the first shelf 11 and the second shelf 12 are connected is open (not shown in the figure), and the length of the opening is less than half the length of the first shelf 11. One end of the second shelf 12 is inserted into one end of the opening of the first shelf 11, and the insertion distance is less than the length of the opening, thereby preventing the first shelf 11 and the second shelf 12 from being unable to fold relative to each other. At the same time, the structure of the bottom opening can prevent the first shelf 11 and the second shelf 12 from sinking due to the load, thereby improving the load-bearing effect of the first shelf 11 and the second shelf 12.

[0055] Furthermore, a support frame 131 is connected between the two support assemblies 14 at the same end of the two support assemblies 13, and a horizontal transfer rod 132 is connected to the top of both ends of the support assembly 13 on each side. The top of both ends of the support assembly 13 is connected to the support assembly 14 through the transfer rod 132;

[0056] Specifically, in order to improve the overall stability of the folding body 1, a support frame 131 is connected between the two support components 14 at the front end and the two support components 14 at the rear end of the folding body 1. The support frame 131 can be in an "I" shape, an "X" shape, or other shapes. The arrangement of the support frame 131 can effectively prevent the two support components 14 at the same end from tilting toward the middle. At the same time, the support frame 131 can also support the seat device 4 and share the gravity when carrying people. Because the bracket assembly 13 is also in an "X"-shaped structure, the height of both ends will increase when folded. At the same time, the two ends of the bracket assembly 13 are connected to the support assembly 14. Therefore, in order to avoid movement conflict that causes the bracket assembly 13 to be unable to fold, the conventional choice The support assembly 14 is set to a telescopic structure, but the setting of the telescopic structure is likely to affect the stability of the support assembly 14. Therefore, in this embodiment, it is preferred to adopt a horizontal transfer rod 132 that is rotatably connected to the top of each end of the bracket assembly 13, and the other end of the transfer rod 132 is rotatably connected to the top of the corresponding support assembly 14. Since the bottom of the bracket assembly 13 is restricted and cannot move, the bracket assembly 13 is folded by moving the top. Therefore, it is only necessary to set the transfer rod 132 at the top of each end of the bracket assembly 13 to realize the folding of the bracket assembly 13. At the same time, there is no need to set the support assembly 14 to a telescopic structure, and the transfer rod 132 is set horizontally, so that it can also support the seat device 4.

[0057] It should be noted that the length of the transfer rod 132 must be adapted to the distance the top of the bracket assembly 13 moves, otherwise it will affect the expansion or folding of the bracket assembly 13 .

[0058] Furthermore, in this embodiment, the steering rod assembly 2 includes: a steering crossbar 21, a steering rod 22, and a sleeve rod 23; the first wheel 24 is arranged below the steering crossbar 21, a turning rod 211 is penetrated in the middle of the steering crossbar 21, and the turning rod 211 can rotate horizontally relative to the steering crossbar 21, one end of the sleeve rod 23 is rotatably connected to the top of the turning rod 211, the steering rod 22 is slidably arranged in the sleeve rod 23, the steering crossbar 21 is rotatably connected to the telescopic inner rod 18, the bottom of the turning rod 211 is connected to the first wheel 24, and the steering rod 22 drives the first wheel 24 to steer through the turning rod 211;

[0059] Specifically, the direction bar assembly 2 includes: a direction cross bar 21, a direction bar 22, and a sleeve rod 23; the two ends of the direction cross bar 21 are respectively rotatably connected to the telescopic inner rod 18, the first wheel 24 is set on the two ends of the direction cross bar 21, and a turning rod 211 is rotatably provided in the middle of the direction cross bar 21. The turning rod 211 can rotate horizontally on the direction cross bar 21, and the bottom end of the turning rod 211 is connected to the first wheel 24. The rotation of the first wheel 24 is controlled by the turning rod 211. The sleeve rod 23 is rotatably connected to the top of the turning rod 211, and the direction bar 22 is slidably set in the sleeve rod 23. The rod 22 can be extended out of the sleeve rod 23. When the height of the direction rod 22 needs to be adjusted, the direction rod 22 can be pulled out from the sleeve rod 23. If the folding body 1 needs to be towed, the sleeve rod 23 can be rotated so that it rotates relative to the turning rod 211 and is tilted to facilitate towing; when the telescopic inner rod 18 is extended, it will drive the direction cross bar 21 and the first wheel 24 to move synchronously, so that the distance between the support point of the first wheel 24 and the support point of the second wheel 15 is extended, so that the support point of the seat device 4 is completely located between the first wheel 24 and the second wheel 15, thereby improving the manned stability of the electric trailer.

[0060] Furthermore, there are two first wheels 24, which are respectively arranged at both ends of the direction cross bar 21, and the end of the turning rod 211 away from the sleeve rod 23 is movably connected to the direction link 212, and the two ends of the direction link 212 are respectively rotatably connected to the two first wheels 24;

[0061] Specifically, since the three-wheel structure is prone to rollover when turning, in order to improve the driving stability of the folding body 1 and enhance the safety of the driver, in this embodiment, two first wheels 24 are preferably provided, and the two first wheels 24 are respectively provided on the two end portions of the direction cross bar 21. In order to facilitate the simultaneous control of the two first wheels 24 to rotate synchronously in the same direction, a direction link 212 is movably connected to the bottom of the turning rod 211, and the two ends of the direction link 212 are respectively connected to the corresponding first wheels 24 for rotation. When the turning rod 211 rotates, it will drive the direction link 212 to translate in the left and right directions, and the direction link 212 will drive the two first wheels 24 to rotate left or right, thereby realizing synchronous control of the two first wheels 24.

[0062] Furthermore, in this embodiment, a vertical first slide groove 133 is respectively provided at the bottom end of the two support assemblies 14 adjacent to the direction rod assembly 2, a pedal 3 is provided between the two first slide grooves 133, and first sliding shafts 31 are respectively provided on both sides of the bottom end of the pedal 3, and the bottom end of the pedal 3 is slidably connected to the first slide groove 133 via the first sliding shafts 31;

[0063] Specifically, when the direction rod assembly 2 is translated and the user sits on the seat device 4, it is inconvenient to put the feet because there is a gap between the two telescopic inner rods 18. Although the feet can be placed on the two telescopic inner rods 18, this posture is not elegant because the feet are spread apart. Therefore, in this embodiment, external and vertical first slide grooves 133 are respectively provided at the bottom of the two support assemblies 14 located on the first shelf 11, that is, the first slide grooves 133 are located outside the surface of the support assembly 14, and a pedal 3 is provided between the two first slide grooves 133. The bottom ends of the pedal 3 are respectively provided with first The sliding shaft 31 and the pedal 3 are slidably connected with the first sliding groove 133 through the first sliding shaft 31, so that the pedal 3 is restricted in front of the two support components 14. The pedal 3 is flipped relative to the support component 14 through the cooperation of the first sliding shaft 31 and the first sliding groove 133. When the steering rod assembly 2 is not moved out, the pedal 3 is vertically attached to the front of the support component 14. When the steering rod assembly 2 is moved out, the pedal 3 can be flipped down and placed on the telescopic inner rod 18 and the steering cross bar 21. At this time, when the user sits on the seat device 4, he can step on the pedal 3. At the same time, the setting of the pedal 3 can also realize the function of standing driving for the user.

[0064] At the same time, in order to achieve the goal of not manually restricting the turning of the pedal 3 when it is vertically attached to the front of the support assembly 14, two second slide grooves 134 are respectively provided on the top of the two support assemblies 14 provided with the first slide groove 133, and a notch is opened at the top of the second slide groove 134 (not shown in the figure). At the same time, second slide shafts 32 are respectively provided on both sides of the end of the pedal 3 away from the first slide shaft 31. The second slide shafts 32 are adapted to the second slide grooves 134, so that the pedal 3 can be vertically restricted at the front end of the folding body 1 through the cooperation between the second slide shaft 32 and the second slide groove 134. When turning over is required, it is only necessary to pull up the pedal 3 to disengage the second slide shaft 32 from the notch at the second slide groove 134 to achieve the turning of the pedal 3.

[0065] It should be pointed out that since the pedal 3 is located above the telescopic inner rod 18 and the pedal 3 can be flipped relative to the support assembly 14, in order to avoid being restricted by the telescopic inner rod 18 during flipping, an avoidance structure corresponding to the telescopic inner rod 18 is provided at one end of the pedal 3 adjacent to the folding body 1 when the pedal 3 is in a flat state, so that the pedal 3 can flip normally.

[0066] Furthermore, at least one folding limit pin 33 is provided at the bottom end of the bottom surface of the pedal 3 for limiting the translation of the direction rod assembly 2 when the pedal 3 is in the folded state. At least one deployment limit pin 34 is provided at the top end of the bottom surface of the pedal 3 for limiting the translation of the direction rod assembly 2 when the pedal 3 is in the deployed state. At least one pin hole 213 is provided on the top surface of the direction cross bar 21 for matching with the folding limit pin 33 and the deployment limit pin 34. A avoidance hole 35 is also provided in the middle of the top end of the pedal 3 for matching with the turning rod 211.

[0067] Specifically, when the pedal 3 is in the flat state, one end adjacent to the folding body 1 is provided with at least one folding limit pin 33, and the folding limit pin 33 is spaced and parallel to the bottom surface of the pedal 3. When the pedal 3 is in the flat state, one end away from the folding body 1 is provided with at least one unfolding limit pin 34. At the same time, a pin hole 213 corresponding to and adapted to the folding limit pin 33 and the unfolding limit pin 34 is provided on the top surface of the direction cross bar 21. When the pedal 3 is laid flat, the unfolding limit pin 34 is inserted into the pin hole 213. At this time, the direction cross bar 21 cannot be translated due to the restriction of the pedal 3. Only when the pedal 3 is lifted can the direction cross bar 21 be translated. When the direction cross bar 21 needs to be retracted, the pedal 3 must be lifted first to disengage the unfolding limit pin 34 from the pin hole 213, and the pedal 3 is vertically attached to the front of the support assembly 14. At this time, the folding limit pin 33 When the direction cross bar 21 is turned from the direction toward the folding body 1 to the downward direction, after the direction cross bar 21 is retracted a certain distance, it will be restricted by the folding limit pin 33 and cannot be retracted further. At this time, it is necessary to pull the pedal 3 upward. Due to the setting of the first slide groove 133, the pedal 3 will move upward when subjected to the upward force. After the direction cross bar 21 loses the obstruction of the folding limit pin 33, it can continue to retract until it is retracted to the limit position. At this time, after putting down the pedal 3, since the folding limit pin 33 corresponds to the pin hole 213, the folding limit pin 33 will be directly inserted into the pin hole 213. Under the restriction of the folding limit pin 33, the direction cross bar 21 cannot be translated after it is retracted, so that the direction cross bar 21 is limited after being extended by the deployment limit pin 34 on the pedal 3 and the direction cross bar 21 is limited after being retracted by the folding limit pin 33.

[0068] Furthermore, in this embodiment, a fold-limiting sleeve 217 is sleeved at the rotational connection between each telescopic inner rod 18 and the directional cross bar 21. A sleeve return spring is provided at one end of the fold-limiting sleeve 217 facing the directional cross bar 21. Under the action of the sleeve return spring, the fold-limiting sleeve 217 is located at the connection between the telescopic inner rod 18 and the directional cross bar 21.

[0069] Specifically, since the telescopic inner rod 18 will be completely retracted into the first shelf 11, and the direction cross bar 21 is restricted by the support assembly 14, it will be spaced apart from the first shelf 11. At this time, the telescopic inner rod 18 will be restricted by the support frame 131 when it rotates, and cannot rotate with the first shelf 11. Therefore, both ends of the telescopic inner rod 18 need to be provided with horizontally extending extension blocks 219 to fill the spacing distance between the telescopic inner rod 18 and the first shelf 11, so that the telescopic inner rod 18 can be completely retracted into the first shelf 11, and the rotation center is coaxial with the rotation center of the first shelf 11; since the direction cross bar 21 and the telescopic inner rod 18 are rotatably connected, in order to avoid the telescopic inner rod 18 from rotating relative to the direction cross bar 21 during normal use, a folding limiting sleeve 217 is movably provided on the extension block 219, and the folding limiting sleeve 217 is respectively provided on both sides of one end facing the direction cross bar 21. When the direction cross bar 21 is extended, the folding sleeve loses the squeezing of the first shelf 11 and slides to the rotation connection between the extension block 219 and the telescopic inner rod 18 under the elastic force of the sleeve return spring.

[0070] It should be pointed out that guide columns 218 are respectively provided on both sides of one end of the fold-limiting sleeve 217 facing the direction cross bar 21. The guide columns 218 can be inserted into the direction cross bar 21, and the sleeve return spring is arranged on the outside of the guide column 218 to prevent the sleeve return spring from being offset when being squeezed, resulting in abnormal deformation of the sleeve return spring.

[0071] Furthermore, the top of the turning rod 211 is provided with spaced turning connecting ears 214, and an insertion hole 215 is opened between the two turning connecting ears 214. The bottom end of the sleeve rod 23 is provided with a protrusion 231, which is inserted between the two turning connecting ears 214 and rotatably connected via a rotating shaft. A folding limiter 232 is movably provided in the bottom end of the sleeve rod 23. When the direction rod 22 squeezes the folding limiter 232, one end of the folding limiter 232 passes through the protrusion 231 and is inserted into the insertion hole 215.

[0072] Specifically, the top of the turning rod 211 is provided with a turning connecting ear 214 spaced apart, and a protruding bump 231 is provided at the bottom of the sleeve rod 23. The bump 231 is adapted to the spacing distance between the two turning connecting ears 214, so that the bump 231 can be inserted between the two turning connecting ears 214, and in order to achieve the rotation connection, the bump 231 and the two turning connecting ears 214 are connected by a rotating shaft to achieve the rotation of the sleeve rod 23 relative to the turning rod 211; in order to avoid the sleeve rod 23 relative to the turning rod 211 when not needed, When the turning rod 211 rotates, a folding limiter 232 is provided in the bottom of the sleeve rod 23. The folding limiter 232 can slide up and down in the bottom of the sleeve rod 23. One end of the folding limiter 232 can pass through the protrusion 231. At the same time, a folding limiter return spring 233 is provided on the end of the folding limiter 232 located in the sleeve rod 23. When the folding limiter 232 is squeezed by the direction rod 22, one end of the folding limiter 232 will pass through the protrusion 231. At the same time, the folding limiter 232 will synchronously squeeze the folding limiter return spring 233. When the force applied by the direction rod 22 is lost, the folding limiter 232 retracts into the sleeve rod 23 under the restoring force of the folding limiter return spring 233. At the same time, in order to make the folding limiter 232 in the sleeve rod 23 cooperate and fix with the turning rod 211, a socket 215 is provided between the two turning connecting ears 214 at the top of the turning rod 211. When one end of the folding limiter 232 passes through the protrusion 231 and is inserted into the socket 215, the folding limiter 232 cooperates with the socket 215 to limit the sleeve rod 23 from being relative to the turning rod 211. The folding limiter 232 is rotated, wherein a shaft slide hole 234 is opened in the middle of the folding limiter 232, and the shaft for rotationally connecting the sleeve rod 23 and the turning rod 211 is located in the shaft slide hole 234, so that the folding limiter 232 can slide between the sleeve rod 23 and the turning rod 211. At the same time, after the folding limiter 232 loses the squeezing of the direction rod 22, the folding limiter return spring 233 will lift the folding limiter 232. At this time, due to the limitation of the shaft, the distance that the folding limiter 232 is lifted is limited, which can be adjusted by the length of the shaft slide hole 234.

[0073] Furthermore, in this embodiment, a handle ring 221 is provided on the top of the direction rod 22, and folding grooves 222 are respectively provided on both sides of the handle ring 221. A grip rod 223 is rotatably connected to the same end of the two folding grooves 222, and one of the grip rods 223 is electrically connected to the controller 17 for controlling the running speed of the first wheel 24 and / or the second wheel 15. A limiting device 224 is also provided on the end of the grip rod 223 connected to the folding groove 222 for limiting the grip rod 223 when it is received in the folding groove 222 or when the grip rod 223 is horizontal with respect to the handle ring 221. A plurality of control buttons 225 and a display device 226 are also provided, and the plurality of control buttons 225 and the display device 226 are electrically connected to the controller 17 via wires. The side walls of the steering rod 22 and the side walls of the sleeve rod 23 are respectively provided with corresponding limiting holes 227. A limiting bayonet 228 is further provided in the steering rod 22, and the limiting bayonet 228 is adapted to the limiting hole 227. A bayonet button 229 is provided in the bottom end of the handle ring 221, and the bayonet button 229 drives the limiting bayonet 228 to extend or retract. A brake device 216 is also provided on the steering cross bar 21, and the brake device 216 is connected to the first wheel 24.

[0074] Specifically, a handle ring 221 is provided on the top of the direction rod 22. The shape of the handle ring 221 can be an inverted trapezoid, a triangle, a rectangle, a circle, or other polygons, so that the user can drag it easily. Folding grooves 222 are respectively provided on both sides of the handle ring 221. At the same time, a grip rod 223 is rotatably connected to one end of the folding sleeve. The grip rod 223 can be stored in the folding groove 222 when not in use. When needed, the grip rod 223 can be rotated to a horizontal shape. In order to be more in line with ordinary people's driving habits, one of the grip rods 223 can be set to rotate, that is, the grip rod 223 can rotate in place on the handle ring 221, just like the throttle grip of an electric bicycle, and the speed of the first wheel 24 is controlled by the rotation angle; a limit stop is also provided on the top surface of the end where the folding groove 222 is connected to the grip rod 223. The device 224 is a bayonet structure with a spring inside. At the same time, a limiting hole 227 adapted to the limiting device 224 is provided on one end of the handlebar 223 connected to the folding groove 222, which is used to limit the handlebar 223 when the handlebar 223 is in a horizontal state or stored relative to the handle ring 221; a plurality of control buttons 225 are also provided on the handle ring 221. The control buttons 225 include but are not limited to a forward / reverse button, a drive / towing switch button, a trailer power-assist speed control button, a headlight switch button, a horn button, a turn signal control button, etc. For details, reference can be made to the button design of the electric bicycle in the prior art. A display device 226 for displaying the battery level and speed is also provided on the handle ring 221. The control buttons 225 and the display device 226 are electrically connected to the controller 17 via wires.

[0075] Corresponding limiting holes 227 are respectively opened on the side walls of the direction rod 22 and the side walls of the sleeve rod 23. At the same time, a limiting latch 228 is provided in the direction rod 22, and the limiting latch 228 is adapted to the limiting hole 227. A latch button 229 is also provided on the handle ring 221. The limiting latch 228 will pass through the direction rod 22 and the limiting holes 227 on the direction rod 22 and the sleeve rod 23 according to the pressing of the latch button 229 to limit the direction rod 22, thereby preventing the direction rod 22 from moving freely in the sleeve rod 23. The specific cooperation between the latch button 229 and the limiting latch 228 can refer to the existing luggage pull rod limiting structure or the structure disclosed in Chinese Patent CN201821724858.2, so it will not be described in detail here.

[0076] A braking device 216 for braking is also provided on the direction crossbar 21. The braking device 216 adopts the foot brake method of a traditional tricycle. The braking device 216 is connected to the brake structure of the two first wheels 24. By pressing the braking device 216, the speed of the first wheel 24 can be stopped.

[0077] Furthermore, in this embodiment, the seat device 4 is made of a hard material, and both ends of the seat device 4 are rotatably connected to both sides of the front top of the folding frame, and the seat device 4 can be flipped forward or backward relative to the folding frame;

[0078] Specifically, in order to improve the load-bearing stability and load-bearing capacity of the seat device 4, the seat device 4 is made of a hard material, such as a wood board, plastic, aluminum plate, etc., which has sufficient load-bearing capacity under the premise of not being heavy. When made of a hard material, the two ends of the seat device 4 are respectively rotatably connected to the two sides of the front top of the folding body 1, so that it can be placed flat on the front top of the folding body 1 when in use, and the user can sit directly on it when needed. The seat device 4 is supported by the adapter rod 132 on the folding body 1, which can support the person. The weight of the body and the rotating connection of the seat device 4 can be used to flip the seat plate counterclockwise at the front end of the folding body 1 when placing items on the folding body 1, so that it is located outside the front end of the folding body 1 to avoid affecting the placement of items. After the items are placed, the seat plate can be directly flipped clockwise to be located inside the front end of the folding body 1. At the same time, the rotating setting can also avoid the problem that the folding body 1 cannot be completely folded due to the limitation of the seat device 4 when it is folded in half, resulting in a large space being occupied. In addition, the flipping of the seat device 4 makes it convenient to use it as a dining table when used outdoors.

[0079] Furthermore, in this embodiment, the seat device 4 is made of a flexible material, and is disposed inside the top portion of the front end of the folding vehicle body 1. The front and / or rear sides of the seat device 4 are provided with support rods connected to the folding vehicle body 1.

[0080] Specifically, in order to reduce weight and improve seat comfort, the seat device 4 can also be made of flexible materials, such as cloth. When cloth is used, the two ends of the seat device 4 are mounted on the transfer rod 132, and the seat device 4 is supported by the transfer rod 132. The user can sit directly on the seat device 4. Due to the soft nature of the seat device 4, it is easy to be affected by gravity during use, and the bracket assemblies 13 on both sides are pulled toward the middle, causing them to tilt and deform, affecting use. Therefore, it is necessary to set a support rod on the front and / or rear side of the seat device 4, preferably the front and rear sides, and the two ends of the support rod need to be connected to the transfer rod 132 to limit the bracket assemblies 13 on both sides from tilting toward the middle. It should be pointed out that the support rod can be a detachable connection or a sliding connection. The sliding connection means that it can slide in the direction of the direction rod assembly 2 to adjust the position of the support rod relative to the folding body 1 to avoid affecting the folding of the folding body 1 when folding.

[0081] Usage state and movement principle: As shown in Figure 1, it is the driving state. In this state, if it is necessary to fold, first lift the pedal 3 from the direction cross bar 21 and vertically stick it to the front end surface of the folding body 1, then push the direction bar assembly 2 to move in the direction of the folding body 1, so that the telescopic inner rod 18 is retracted until the direction cross bar 21 is blocked by the folding limit pin 33, and then pull up the pedal 3 to make the telescopic inner rod 18 completely retracted. At the same time, the direction cross bar 21 is also completely retracted. At the same time, the folding limit sleeve 217 is squeezed by the first shelf 11 and retracts to the extension block 219. The rotational connection between the extension block 219 and the telescopic inner rod 18 is exposed. When the direction cross bar 21 is fully retracted, the folding limit pin 33 corresponds to the pin hole 213. At this time, the pedal 3 is lowered, and the folding limit pin 33 will be inserted into the pin hole 213 to limit the direction cross bar 21. Subsequently, an upward force is applied from the middle of the first shelf 11 and the second shelf 12 to fold the first shelf 11 and the second shelf 12 in half. In the process of folding the first shelf 11 and the second shelf 12 in half, the bracket assemblies 13 on both sides will be driven to fold together until the folding is completed as shown in Figure 9.

[0082] When it is necessary to unfold, first apply a forward force to one end of the folding body 1 and a backward force to the other end. The first shelf 11 and the second shelf 12 will be flattened from the folded state under the pull of the two forces. When the first shelf 11 and the second shelf 12 are flattened, the bracket assemblies 13 on both sides will be flattened synchronously. When flattening is completed, pull the pedal 3 upward to make the folding limit pin 33 disengage from the pin hole 213, then pull the direction rod assembly 2 forward, and after pulling a predetermined distance, flatten the pedal 3. At this time, the unfolding limit pin 34 will be inserted into the pin hole 213. The direction rod assembly 2 is limited in the flattened state so that it will extend when retracted. At the same time, when the direction rod assembly 2 is extended, the folding limit sleeve 217 loses the squeezing of the first shelf 11, and the sleeve return spring generates a rebound force acting on the folding limit sleeve 217, so that it is pushed out and located at the connection between the extension block 219 and the telescopic inner rod 18, thereby limiting the rotation of the direction cross bar 21 relative to the telescopic inner rod 18, and the deployment is completed. At this time, the user can sit on the seat device 4, step on the pedal 3, and place his hands on the direction rod assembly 2 for control.

[0083] The semi-expanded state, as shown in Figures 7 and 8, is when the folding body 1 is in the fully expanded state and the steering rod assembly 2 is in the unextended state. This state is conducive to towing. At this time, the limit pin 228 can be retracted by pressing the pin button 229, and then the steering rod 22 is pulled out relative to the sleeve. After the steering rod 22 is extended by a predetermined distance and the limiting holes 227 of the steering rod 22 and the sleeve correspond to each other, the limit pin 228 will automatically pass through the limiting holes 227 of the steering rod 22 and the sleeve, and re-limit the steering rod 22. At the same time, when the steering rod 22 is extended, the folding limiter 232 loses the squeezing of the steering rod 22. Under the rebound force of the folding limit return spring 233, the folding limit member 232 is lifted up and the end of the folding limit member 232 is disengaged from the socket 215 and retracted into the protrusion 231. At this time, the sleeve rod 23 can be rotated up and down relative to the turning rod 211, so that the steering rod 22 is driven to be tilted, thereby facilitating towing; of course, the towing posture of the steering rod assembly 2 can also be converted when the electric trailer is in the driving state, and it can also be driven in the semi-expanded state. However, since the support point of the first wheel 24 is too close to the support force point of the seat device 4, if gravity tilts forward, it is easy to lift the tail, affecting safety. Therefore, it is not recommended to sit and drive in this state.

[0084] In summary, the present invention realizes the sitting function by arranging a seat device 4 on the top of the front end of the folding body 1, making the use of the electric trailer more labor-saving. At the same time, the steering rod assembly 2 is slidably connected to the folding body 1, so that the steering rod assembly 2 can be extended, increasing the distance between the support force point of the seat device 4 and the support point of the first wheel 24, thereby improving the stability of manned driving and improving safety performance. A pedal 3 is provided at the front end of the folding body 1 for easy foot placement and standing driving, thereby increasing the diversity of use of the electric trailer, and the electric trailer can be folded and stored, which improves the convenience of carrying.

[0085] The present invention is not limited to what is described in the specification and implementation modes, and therefore additional advantages and modifications can be easily realized by those skilled in the art. Therefore, without departing from the spirit and scope of the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details, representative devices, and illustrated examples shown and described herein.

Claims

1. A new type of manned folding electric trailer, characterized in that: include: A folding vehicle body, the folding vehicle body is folded in half from the front-to-back direction, a seat device is provided on the top front end of the folding vehicle body, a steering rod assembly is connected to the bottom front end of the folding vehicle body, the steering rod assembly is connected to at least one first wheel, at least two second wheels are provided on the end of the folding vehicle body away from the steering rod assembly, and the folding vehicle body is also provided with a power supply for providing power to the first wheel and / or the second wheel and a controller for controlling the operation of the first wheel and / or the second wheel.

2. The novel foldable electric trailer for passengers according to claim 1 is characterized in that: The folding vehicle body includes: a first shelf and a second shelf; one end of the first shelf is connected to one end of the second shelf, each of the two sides of the first shelf is provided with a bracket assembly, and the two ends of the bracket assembly on each side are respectively connected to support assemblies, and telescopic inner rods are slidably provided on both sides of one end of the first shelf, and the telescopic inner rods can extend out of the first shelf to drive the direction rod assembly away from the first shelf.

3. The new type of foldable electric trailer for passengers according to claim 2 is characterized in that: Telescopic inner rods are slidably arranged on both sides of one end of the first shelf, and one end of the telescopic inner rod away from the second shelf is rotatably connected to the direction rod assembly.

4. The novel foldable electric trailer for passengers according to claim 2 is characterized in that: The bottom surface of one end of the first shelf connected to the second shelf is open, and the end portion of the second shelf adjacent to the first shelf is inserted into the first shelf and rotatably connected to the first shelf.

5. The novel foldable electric trailer for passengers according to claim 3 is characterized in that: The steering rod assembly includes: a steering cross bar, a steering rod, and a sleeve rod; the first wheel is arranged below the steering cross bar, a turning rod is passed through the middle of the steering cross bar, the turning rod can rotate horizontally relative to the steering cross bar, one end of the sleeve rod is rotatably connected to the top of the turning rod, the steering rod is slidably arranged in the sleeve rod, the steering cross bar is rotatably connected to the telescopic inner rod, the bottom of the turning rod is connected to the first wheel, and the steering rod drives the first wheel to turn through the turning rod.

6. The novel foldable electric trailer for passengers according to claim 2 is characterized in that: A support frame is connected between the two support assemblies at the same end of the two bracket assemblies.

7. The novel foldable electric trailer for passengers according to claim 6 is characterized in that: The tops of both ends of the bracket assembly on each side are respectively connected with horizontal transfer rods, and the tops of both ends of the bracket assembly are connected to the support assembly through the transfer rods.

8. The novel foldable electric trailer for passengers according to claim 5 is characterized in that: There are two first wheels, which are respectively arranged at two ends of the direction cross bar, and one end of the turning rod away from the sleeve rod is movably connected with a direction connecting rod, and the two ends of the direction connecting rod are respectively rotatably connected with the two first wheels.

9. The novel foldable electric trailer for passengers according to claim 5 is characterized in that: A vertical first slide groove is respectively provided at the bottom ends of the two support assemblies adjacent to the direction rod assembly, a pedal is provided between the two first slide grooves, first sliding shafts are respectively provided on both sides of the bottom end of the pedal, and the bottom end of the pedal is slidably connected to the first slide groove through the first sliding shaft.

10. The novel foldable electric trailer for passengers according to claim 9 is characterized in that: At least one folding limit pin is provided at the bottom end of the bottom surface of the pedal for limiting the translation of the direction rod assembly when the pedal is in the folded state, and at least one pin hole is provided on the top surface of the direction cross bar for matching with the folding limit pin. An avoidance hole is also provided in the middle of the top end of the pedal for matching with the turning rod.

11. The novel foldable electric trailer for passengers according to claim 10, characterized in that: At least one deployment limit pin for limiting the translation of the direction rod assembly when the pedal is deployed is disposed in the top end of the bottom surface of the pedal, and the deployment limit pin is adapted to the pin hole.

12. The novel foldable electric trailer for passengers according to claim 5, characterized in that: The top of the turning rod is provided with turning connecting ears spaced apart from each other, and an insertion hole is opened between the two turning connecting ears. The bottom end of the sleeve rod is provided with a protrusion, and the protrusion is inserted between the two turning connecting ears and is rotatably connected through a rotating shaft. A folding limiter is movably provided in the bottom end of the sleeve rod. When the direction rod squeezes the folding limiter, one end of the folding limiter passes through the protrusion and is inserted into the insertion hole.

13. The novel foldable electric trailer for passengers according to claim 5, characterized in that: A handle ring is provided on the top of the direction rod, and folding grooves are respectively provided on both sides of the handle ring. A grip rod is rotatably connected to the same end of the two folding grooves, and one of the grip rods is electrically connected to the controller for controlling the running speed of the first wheel and / or the second wheel.

14. The novel foldable electric trailer for passengers according to claim 13, characterized in that: One end of the grip bar connected to the folding groove is also provided with a limiting device for limiting the grip bar when the grip bar is received in the folding groove or when the grip bar is horizontal relative to the handle ring.

15. The novel foldable electric trailer for passengers according to claim 13, characterized in that: The handle ring is also provided with a plurality of control buttons and a display device, and the plurality of control buttons and the display device are electrically connected to the controller through wires respectively.

16. The novel foldable electric trailer for passengers according to claim 13, characterized in that: The side walls of the direction rod and the side walls of the sleeve rod are respectively provided with corresponding limiting holes, and a limiting pin is also provided in the direction rod, and the limiting pin is adapted to the limiting hole. A pin button is provided in the bottom end of the handle ring, and the pin button drives the limiting pin to extend or retract. A braking device is also provided on the direction cross bar, and the braking device is connected to the first wheel.

17. The novel foldable electric trailer for passengers according to claim 5, characterized in that: A fold-limiting sleeve is also sleeved on the rotational connection between each telescopic inner rod and the directional cross bar. A sleeve return spring is provided on one end of the fold-limiting sleeve facing the directional cross bar. The fold-limiting sleeve is located at the connection between the telescopic inner rod and the directional cross bar under the action of the sleeve return spring.

18. The novel foldable electric trailer for passengers according to claim 1, characterized in that: The seat device is made of a hard material, and both ends of the seat device are rotatably connected to both sides of the front top of the folding vehicle body respectively. The seat device can be flipped forward or backward relative to the folding vehicle frame.

19. The novel foldable electric trailer for passengers according to claim 1 is characterized in that: The seat device is made of flexible material and is arranged in the front end top of the folding vehicle body. The front side and / or the rear side of the seat device are provided with a support rod connected with the folding vehicle body.

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