WO2026026979A1 - Foldable man-carrying trailer - Google Patents

Abstract

A foldable man-carrying trailer, relating to the technical field of electric trailers. The foldable man-carrying trailer comprises a first base frame (10) and a second base frame (11); one end of the first base frame (10) is rotatably connected to one end of the second base frame (11); two sides of the ends where the first base frame (10) is away from the second base frame (11) are respectively connected to support vertical rods (12); two support vertical rods (12) on the same side are rotatably connected to a side support (13); a reinforcing vertical rod (14) is arranged in the middle of each side support (13); the front and rear ends of the side support (13) can move and fold towards the position where the reinforcing vertical rod (14) is located; fixed wheels (16) are fixedly connected to the bottom ends of the two support vertical rods (12) at one end, and directional wheels (17) are rotatably connected to the bottom ends of the two support vertical rods (12) at the other end; end transverse rods (18) are respectively connected at the top ends and the bottom ends of the two support vertical rods (12) connected to the directional wheels (17), and an end transverse rod (18) is connected between the bottom ends of the two support vertical rods (12) connected to the fixed wheels (16); the end transverse rod (18) located at the bottom ends of the two support vertical rods (12) connected to the directional wheels (17) is also movably connected to a directional rod assembly (19); the directional rod assembly (19) can vertically and transversely rotate relative to the end transverse rod (18) connected to the directional rod assembly (19); the bottom end of the directional rod assembly (19) is connected to the directional wheels (17); the directional rod assembly (19) controls the directional wheels (17) to rotate; the top ends of the two support vertical rods (12) connected to the directional wheels (17) are respectively rotatably connected to seat support rods (20); the end of each seat support rod (20) away from the position where the seat support rod (20) is rotatably connected to the corresponding support vertical rod (12) is connected to the top of the corresponding reinforcing vertical rod (14); a support member (21) is detachably connected between the two seat support rods (20); and the tops of the reinforcing vertical rods (14) are provided with limiting devices (141) for limiting the separation of the seat support rods (20). The trailer has a man-carrying function and strong stability.

Description

A folding passenger trailer Technical Field

This invention relates to the field of electric trailer technology, and in particular to a folding passenger trailer.

Background Technology

A campervan is a foldable, towable vehicle. Because it is easy to use, can carry cargo, is easy to store, and saves time and effort, it is widely used for transporting things and is now often used for outdoor activities or short-distance transportation.

Existing campervans can be divided into two types based on their folding mechanism: the bi-fold type, where the frame folds inward from both ends, with the bottom of the frame arching upward from the center; and the convergent type, where the frame converges inward from all four directions, with the bottom of the frame arching upward. The convergent type occupies less space when folded, but its structure is relatively complex and its cost is relatively high. The bi-fold type, on the other hand, does not require consideration of convergence in the left and right directions, so its structure is relatively simple and its cost is lower. To improve ease of use, existing campervans have upgraded traditional manual campervans to electric campervans. Driven by electricity, these campervans greatly save the user's physical effort, as shown in patent number CN202322836690.1. However, these campervans do not have the function of carrying passengers. If passengers are forced to be carried in the campervan's space, the inconvenience of steering control will easily lead to safety accidents, and the stability of such vehicles is low.

Therefore, there is an urgent need to design a folding passenger trailer to overcome the shortcomings of one or more of the existing technologies mentioned above.

Summary of the Invention

The technical solution adopted by the present invention to solve the above-mentioned technical problems is: to provide a folding type passenger trailer, characterized in that it includes: a first base frame and a second base frame, wherein one end of the first base frame and the second base frame are rotatably connected;

The first base frame and the second base frame are respectively connected to the two sides of their opposite ends. The two supporting vertical rods on the same side are rotatably connected to a side bracket. Each side bracket is provided with a reinforcing vertical rod in the middle. The front and rear ends of the side bracket can be moved and retracted toward the position of the reinforcing vertical rod.

The bottom ends of the two supporting vertical rods at one end are fixedly connected to fixed wheels, and the bottom ends of the two supporting vertical rods at the other end are rotatably connected to directional wheels;

A crossbar is connected between the top and bottom ends of the two supporting vertical rods connecting the direction wheel and between the bottom ends of the two supporting vertical rods connecting the fixed wheel;

The end crossbar located at the bottom end of the two supporting vertical bars connecting the steering wheel is also movably connected to a steering rod assembly. The steering rod assembly can rotate vertically and laterally relative to the end crossbar. The bottom end of the steering rod assembly is connected to the steering wheel, and the steering rod assembly controls the rotation of the steering wheel.

The top ends of the two supporting vertical rods connecting the steering wheel are respectively rotatably connected to seat support rods. The end of each seat support rod away from the supporting vertical rod is connected to the top of the corresponding reinforcing vertical rod. A support member can also be detachably connected between the two seat support rods.

The top of the reinforcing vertical rod is also provided with a limiting device to prevent the seat support rod from detaching.

In a preferred embodiment, the bottom ends of the two support rods connecting the steering wheel are respectively rotatably connected to foot pedals.

In a preferred embodiment, a first hook is provided on both sides of the end where the first base frame is connected to the second base frame, and a second hook is provided on both sides of the end where the second base frame is connected to the first base frame. The first hook and the second hook cooperate to clamp the support crossbar.

In a preferred embodiment, a clamping device is further provided in the middle of the end crossbar located at the top of the two supporting vertical rods connecting the steering wheel, the clamping device being used to restrict the vertical rotation of the steering rod assembly.

In a preferred embodiment, the clamp device includes: a clamp sleeve and a limiting member; the clamp sleeve is adapted to the direction rod assembly, the clamp sleeve has an opening, and the limiting member is disposed at the opening for closing the opening.

In a preferred embodiment, a stabilizing rod is provided between the top ends of the two supporting vertical rods connecting the fixed wheel. One end of the stabilizing rod is rotatably connected to one of the supporting vertical rods, and the other end of the stabilizing rod is detachably connected to the other supporting vertical rod.

In a preferred embodiment, the end of the stabilizer bar away from the one of the supporting vertical bars that is rotatably connected to it is provided with a detachable sliding member. The detachable sliding member is slidably connected to the stabilizer bar and cooperates with the corresponding supporting vertical bar to restrict the disassembly of the stabilizer bar.

In a preferred embodiment, the top ends of the two supporting vertical rods connecting the fixed wheel are each rotatably connected to the seat support rod.

In a preferred embodiment, the side support includes: a first support rod, a second support rod, a third support rod, and a fourth support rod; the middle portions of the first support rod and the second support rod are rotatably connected, the middle portions of the third support rod and the fourth support rod are rotatably connected, one end of the first support rod and the second support rod are rotatably connected to the corresponding supporting vertical rod, and the other end is rotatably connected to the corresponding reinforcing vertical rod, and one end of the third support rod and the fourth support rod are rotatably connected to the corresponding supporting vertical rod, and the other end is rotatably connected to the corresponding reinforcing vertical rod, and each supporting vertical rod is telescopically configurable.

In a preferred embodiment, the side support includes: a first support rod, a second support rod, a third support rod, a fourth support rod, and a connecting rod; the first and second support rods are arranged crosswise and can rotate at the intersection, the third and fourth support rods are arranged crosswise and can rotate at the intersection, one end of the first support rod is rotatably connected to the bottom end of the support vertical rod connecting to the directional wheel, one end of the second support rod is rotatably connected to the connecting rod, the other end of the connecting rod is rotatably connected to the top end of the support vertical rod connecting to the directional wheel, the other ends of the first and second support rods are respectively rotatably connected to the corresponding reinforcing vertical rods, one end of the third and fourth support rods is rotatably connected to the corresponding reinforcing vertical rods, the other end of the third support rod is connected to the connecting rod, the end of the connecting rod away from the third support rod is rotatably connected to the top end of the support vertical rod connecting to the fixed wheel, and the end of the fourth support rod away from the reinforcing vertical rod is rotatably connected to the bottom end of the support vertical rod connected to the fixed wheel.

In a preferred embodiment, the steering wheel and/or the fixed wheel are electrically controlled to operate, and the steering lever assembly can control the operation of the steering wheel and/or the fixed wheel.

In a preferred embodiment, a rotatable tailstock is also provided between the two support columns connected to the fixed wheels.

In a preferred embodiment, one end of the tailstock is rotatably connected to a support vertical rod on one side, and the other end of the tailstock is provided with a sleeve that is adapted to the support vertical rod.

In a preferred embodiment, the bottom side of the tail frame is rotatably connected to the end crossbar, and the two ends of the tail frame are respectively provided with rod sleeves adapted to the supporting vertical rods. The two supporting vertical rods connected to the fixed wheel are respectively connected with connectors, and the end of the connector away from the supporting vertical rod is connected to the end of the tail frame.

In a preferred embodiment, a retaining sleeve adapted to the adapter rod is provided at the position corresponding to the seat support rod and the adapter rod, and the seat support rod presses the adapter rod through the retaining sleeve.

In a preferred embodiment, the reinforcing vertical bar is telescopically oriented.

In a preferred embodiment, a supporting crossbar is fixedly connected between the bottom ends of the two reinforcing vertical bars.

The beneficial effects of this invention are: by providing a reinforcing vertical bar in the middle of the side support and improving the lateral force-bearing capacity of the side support through the supporting horizontal bar, and by setting a seat support bar above the side support to further improve the stability of the side support and ensure the stability of the trailer, the trailer's passenger-carrying function is realized through the setting of the support components. The trailer has strong stability, a high passenger safety factor, and a large load capacity, thereby meeting different usage needs.

Attached Figure Description

Figure 1 is a schematic diagram of the structure of the present invention;

Figure 2 is a schematic diagram of the structure of the first base frame and the second base frame of the present invention;

Figure 3 is an enlarged view of point A in Figure 2;

Figure 4 is a schematic diagram of the side support structure of the present invention;

Figure 5 is an enlarged view of section B in Figure 4;

Figure 6 is a schematic diagram of the end crossbar of the present invention;

Figure 7 is an enlarged view of point C in Figure 6;

Figure 8 is a structural schematic diagram of the directional rod assembly of the present invention;

Figure 9 is an open state diagram of the first embodiment of the tailstock of the present invention;

Figure 10 shows the open state of the second embodiment of the tailstock of the present invention;

Figure 11 shows the invention in dragging mode;

Figure 12 is a diagram of the folded state of the present invention.

In the picture:

10. First base frame; 101. First hook; 11. Second base frame; 111. Second hook; 12. Supporting vertical rod; 13. Side bracket; 131. First support rod; 132. Second support rod; 133. Third support rod; 134. Fourth support rod; 135. Adapter rod; 14. Reinforcing vertical rod; 141. Limiting device; 15. Supporting crossbar; 16. Fixed wheel; 17. Directional wheel; 18. End crossbar; 181. Clamp Device; 182, Hoop; 183, Limiting component; 184, Opening; 19, Steering rod assembly; 191, Steering arm; 192, Steering control rod; 20, Seat support rod; 201, Protruding column; 202, Sleeve; 203, Limiting groove; 21, Support component; 22, Tail frame; 221, Rod sleeve; 222, Connecting component; 23, Foot pedal; 24, Stabilizer bar; 241, Removable sliding component; 242, Mounting hole; 243, Spring.

Detailed Implementation

To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection" and "installation" should be interpreted broadly. 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. Furthermore, "connection" can be a direct connection or an indirect connection through an intermediate medium. "Fixed" means that the devices are connected to each other and their relative positional relationship remains unchanged after the connection. The directional terms mentioned in the embodiments of the present invention, such as "inner," "outer," "top," and "bottom," are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention.

In this embodiment of the invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature.

In this embodiment of the invention, "and/or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and/or B can represent three cases: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character "/" in this document generally indicates that the preceding and following related objects have an "or" relationship.

References to "one embodiment" or "some embodiments" as used in this specification mean that one or more embodiments of the invention include a particular feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of 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 "comprising," "including," "having," and variations thereof mean "including, but not limited to," unless otherwise specifically emphasized. Therefore, the invention is not limited to the specific embodiments disclosed below.

As shown in Figures 1-8, the present invention provides a folding type passenger trailer, characterized in that it includes: a first base frame 10 and a second base frame 11, wherein one end of the first base frame 10 and the second base frame 11 are rotatably connected;

The first base frame 10 and the second base frame 11 are respectively connected to the two sides of their opposite ends. The two supporting vertical rods 12 on the same side are rotatably connected to the side bracket 13. Each side bracket 13 is provided with a reinforcing vertical rod 14 in the middle. The reinforcing vertical rod 14 is telescopic. The front and rear ends of the side bracket 13 can move and retract toward the position of the reinforcing vertical rod 14.

A supporting crossbar 15 is fixedly connected between the bottom ends of the two reinforcing vertical bars 14;

The bottom ends of the two supporting vertical rods 12 at one end are fixedly connected to fixed wheels 16, and the bottom ends of the two supporting vertical rods 12 at the other end are rotatably connected to directional wheels 17;

A crossbar 18 is connected between the top and bottom ends of the two supporting vertical rods 12 that connect to the directional wheel 17 and between the bottom ends of the two supporting vertical rods 12 that connect to the fixed wheel 16.

The end crossbar 18 located at the bottom of the two supporting vertical bars 12 connecting the steering wheel 17 is also movably connected to a steering rod assembly 19. The steering rod assembly 19 can rotate vertically and laterally relative to the end crossbar 18. The bottom end of the steering rod assembly 19 is connected to the steering wheel 17, and the steering rod assembly 19 controls the rotation of the steering wheel 17.

The top ends of the two supporting vertical rods 12 that connect to the steering wheel 17 are respectively rotatably connected to seat support rods 20. The end of each seat support rod 20 away from the supporting vertical rod 12 is connected to the top of the corresponding reinforcing vertical rod 14. A support member 21 can also be detachably connected between the two seat support rods 20.

A rotatable tailstock 22 is also provided between the two supporting vertical rods 12 connected to the fixed wheel 16;

Specifically, one end of the first base frame 10 and one end of the second base frame 11 are rotatably connected. The first base frame 10 and the second base frame 11 can be folded in half. Supporting vertical rods 12 are connected to the two sides of the ends of the first base frame 10 and the second base frame 11 that are far apart from each other. Each supporting vertical rod 12 has a connecting seat fixedly connected to its top and bottom. A side bracket 13 is rotatably connected between two supporting vertical rods 12 on the same side through the connecting seat. The front end and the rear end of the side bracket 13 can be moved and retracted towards the middle. A reinforcing vertical rod 14 is also provided in the middle of the side bracket 13. The reinforcing vertical rod 14 has an inner rod and an outer rod. The inner rod can extend and retract within the outer rod. The top of the inner rod... Both the end and the bottom of the outer rod are connected to a connecting seat. When the front and rear ends of the side support 13 move and retract towards the middle, the inner rod of the reinforcing vertical rod 14 will extend, and vice versa. A supporting horizontal rod 15 is also fixedly connected between the connecting seats at the bottom of the two reinforcing vertical rods 14. When the first base frame 10 and the second base frame 11 are level, the supporting horizontal rod 15 restricts the first base frame 10 and the second base frame 11 from continuing to rotate downward, keeping them in a level state. Furthermore, the supporting horizontal rod 15 and the reinforcing vertical rod 14 ensure that the side support 13 will not be pushed and bent by external force even if it is subjected to external force, thereby improving the stability and firmness of the side support 13.

To control the trailer's direction of travel, a steering wheel 17 is rotatably connected to the connecting seat at the bottom of the two supporting vertical rods 12 at one end. The orientation of the steering wheel 17 can be adjusted by rotation. A fixed wheel 16 is fixedly connected to the connecting seat at the bottom of the two supporting vertical rods 12 at the other end. The orientation of the fixed wheel 16 is fixed. For ease of subsequent description, the end with the steering wheel 17 is defined as the front end, and the end with the fixed wheel 16 is defined as the rear end. To further improve the trailer's stability, an end crossbar 18 is fixedly connected between the top and bottom of the two supporting vertical rods 12 at the front end, and an end crossbar 18 is also fixedly connected between the bottom of the two supporting vertical rods 12 at the rear end. The end crossbar 18 can also be replaced with an "X"-shaped bracket, which can also achieve a stabilizing effect.

A steering rod assembly 19 is also provided at one end connected to the steering wheel 17. The bottom of the steering rod assembly 19 is movably connected to the end crossbar 18 located at the bottom end. The steering rod assembly 19 can rotate horizontally and vertically relative to the end crossbar 18 connected to it. The vertical rotation is for the purpose of facilitating towing. At the same time, a steering swing arm 191 is fixedly connected to the bottom end of the steering rod assembly 19. A steering control rod 192 is rotatably connected to the end of the steering swing arm 191 away from the steering rod. The two ends of the steering control rod 192 are respectively connected to the corresponding steering wheel 17. When the steering rod assembly 19 rotates laterally, it drives the steering rod 192 to move left and right, thereby driving the steering wheel 17 to rotate, thus controlling the driving direction of the trailer. The rotation axis of the steering wheel 17 and the rotation axis of the steering rod assembly 19 are on the same straight line. To improve the practicality of the trailer, a tail frame 22 is also rotatably provided between the two support vertical rods 12 at the rear. The tail frame 22 rotates to realize the rear opening of the trailer door, so as to meet the use needs when needed, and when not needed, the tail frame 22 can also improve the stability of the top of the trailer.

To enable passenger carrying, seat support rods 20 are rotatably connected to the tops of the two front support vertical rods 12. The seat support rods 20 can rotate in two ways: horizontally and vertically. Horizontal rotation prevents the trailer from folding down, while vertical rotation allows for convenient use of the seat support rods 20 as needed. The other end of the seat support rod 20 is detachably connected to the top of the corresponding side reinforcing vertical rod 14. When needed, the seat support rod 20 can be placed between the support vertical rods 12 and the reinforcing vertical rod 14. A support member 21 is detachably connected between the two seat support rods 20, allowing the user to sit on the support member 21 and control the direction of the steering wheel 17 via the steering rod assembly 19. To enable passenger transport; when not needed, the support member 21 can be removed, and the connection between the seat support rod 20 and the reinforcing vertical rod 14 can be disconnected. Then, the seat support rod 20 can be rotated laterally so that it is suspended on the outside of the trailer, thereby avoiding its impact on the folding of the trailer; when loading a large amount of cargo, only the support member 21 can be removed, and the seat support rod 20 can be used to enhance the stability and firmness of the side support 13; the seat support rod 20 itself has a folding structure, which allows the seat support rod 20 to rotate vertically. At the same time, the end of the seat support rod 20 with the folding structure is fixed to the connecting seat of the supporting vertical rod 12 with a screw, which allows the seat support rod 20 to rotate laterally, and the seat support rod 20 can also be removed when not needed.

It should be noted that the steering lever assembly 19 is equipped with a speed control device, including but not limited to braking; this is prior art, so it will not be described in detail here.

Furthermore, foot pedals 23 are rotatably connected to the bottom ends of the two supporting vertical rods 12 that connect to the steering wheel 17;

Specifically, to further enhance the riding experience, as shown in Figure 1, foot pedals 23 are rotatably connected to the bottom of the two front support rods 12. The foot pedals 23 can rotate within a predetermined angle. When needed, the foot pedals 23 can be laid flat, and the user can place their feet on the foot pedals 23 while sitting on the support 21. When not in use, the foot pedals 23 can be erected directly to avoid taking up space.

Furthermore, as shown in Figure 3, the first base frame 10 and the second base frame 11 are respectively provided with a first hook 101 on both sides of the end where they are connected, and the second base frame 11 and the first base frame 10 are respectively provided with a second hook 111 on both sides of the end where they are connected. The first hook 101 and the second hook 111 cooperate to clamp the support crossbar 15.

Specifically, to further improve the stability of the side supports 13 and prevent them from swaying on both sides during use, the side wall of the first base frame 10 abuts against the side wall of the connecting seat at the bottom of the reinforcing vertical rod 14, thereby limiting the two side supports 13 from swaying and bending in opposite directions through the first base frame 10; at the same time, a first hook portion 101 is integrally provided on both sides of the end where the first base frame 10 and the second base frame 11 are connected, and a second hook portion 111 is integrally provided on both sides of the end where the second base frame 11 is connected to the first base frame 10. The first hook portions 101 and the second hook portions 111 are staggered to avoid affecting the first base frame 10 and the second base frame. When the first base frame 10 and the second base frame 11 are folded in half, the first hook 101 and the second hook 111 will be close to each other when the first base frame 10 and the second base frame 11 are folded in half, and the first hook 101 and the second hook 111 will be separated from each other. Thus, when the first base frame 10 and the second base frame 11 are folded in half, the first hook 101 and the second hook 111 will clamp the support crossbar 15. And when goods are placed on the first base frame 10 and the second base frame 11, the weight of the goods will cause the first hook 101 and the second hook 111 to tightly clamp the support crossbar 15 to prevent the side support 13 from shaking.

Furthermore, as shown in Figure 6, a clamping device 181 is provided in the middle of the end crossbar 18 located at the top of the two supporting vertical rods 12 connecting the direction wheel 17. The clamping device 181 is used to restrict the vertical rotation of the direction rod assembly 19.

Furthermore, the clamp device 181 includes: a clamp sleeve 182 and a limiting member 183; the clamp sleeve 182 is adapted to the direction rod assembly 19, the clamp sleeve 182 is provided with an opening 184, and the limiting member 183 is provided at the opening 184 for closing the opening 184.

Specifically, to facilitate operation of the steering rod assembly 19 while riding, a clamping device 181 is provided on the end crossbar 18 at the front top. When the steering rod assembly 19 is placed in the clamping device 181, the clamping device 181 can restrict the vertical rotation of the steering rod assembly 19, but will not restrict the lateral rotation of the steering rod assembly 19. Therefore, it will not restrict the steering control of the steering rod assembly 19, thereby ensuring that the steering rod assembly 19 can be used normally while riding without affecting the safety of use. The clamping device 181 includes a clamp sleeve 182. Adapted to the steering rod assembly 19, the sleeve 182 has an opening 184 to facilitate the insertion of the steering rod assembly 19 into the sleeve 182, and the sleeve 182 can fit snugly against the steering rod assembly 19. Since there is an opening 184, in order to prevent the restriction effect from being not achieved, a limiting member 183 is also provided at the opening 184. The limiting member 183 is used to block and close the opening 184, so that when the steering rod assembly 19 enters the sleeve 182, it cannot be removed from the sleeve 182. In this embodiment, the sleeve 182 is preferably made of plastic material, which has good toughness, low cost, and sufficient strength.

Furthermore, as shown in Figure 6, a stabilizing rod 24 is provided between the top ends of the two supporting vertical rods 12 that connect to the fixed wheel 16. One end of the stabilizing rod 24 is rotatably connected to one of the supporting vertical rods 12, and the other end of the stabilizing rod 24 is detachably connected to the other supporting vertical rod 12.

Specifically, to avoid insufficient stability of the trailer top when the tail rack 22 is in the open state, a stabilizer bar 24 is provided between the tops of the two rear support vertical bars 12. The stabilizer bar 24 improves the stability of the trailer top and prevents the side support 13 from easily bending under lateral stress. At the same time, to prevent the stabilizer bar 24 from affecting the loading of goods when the tail rack 22 is open, one end of the stabilizer bar 24 is rotatably connected to one of the support vertical bars 12, and the other end is detachably connected to the other support vertical bar 12, preferably by snap-fit. Thus, when needed, the stabilizer bar 24 can be raised to facilitate the placement of large items and improve the loading capacity of the trailer.

Furthermore, as shown in Figure 7, the end of the stabilizer bar 24 away from the one that is rotatably connected to one of the supporting vertical bars 12 is provided with a limited disassembly sliding member 241. The limited disassembly sliding member 241 is slidably connected to the stabilizer bar 24, and the limited disassembly sliding member 241 cooperates with the corresponding supporting vertical bar 12 to restrict the disassembly of the stabilizer bar 24.

Specifically, to prevent the stabilizer bar 24 from disengaging from the corresponding support rod 12 due to bouncing during riding, a limiting slide member 241 is slidably provided on the top surface of the end of the stabilizer bar 24 that is engaged with the support rod 12. When it is necessary to fix the stabilizer bar 24, the limiting slide member 241 is slid to insert into the connecting seat at the top of the corresponding support rod 12, which cooperates with the connecting seat to limit the lifting of the stabilizer bar 24. At the same time, to prevent the limiting slide member 241 from moving on its own, a mounting hole 242 is provided in the middle of the limiting slide member 241, and a spring 243 is provided in the mounting hole 242. A protrusion 201 is provided at the corresponding position of the stabilizer bar 24, and one end of the spring 243 abuts against the protrusion 201. The spring 243 pushes against the limiting slide member 241 and cooperates with the connecting seat to prevent it from moving on its own.

Furthermore, the top ends of the two supporting vertical rods 12 connecting the fixed wheel 16 are respectively rotatably connected to the seat support rods 20;

Specifically, seat support rods 20 are rotatably connected to the top of each of the two rear support rods 12. The end of the rear seat support rod 20 away from the support rod 12 is also detachably connected to the top of the reinforcing rod 14, preferably by snap-fit, for easy disassembly. Support members 21 can also be detachably installed between the two rear seat support rods 20 according to usage requirements to realize the function of carrying two people. Even when not carrying people, the front and rear seat support rods 20 can restrict the front-back and left-right movement of the side support 13, improve the stability of the side support 13, and thus improve the sturdiness of the trailer to ensure the safety of carrying people.

It should be noted that the two rear seat support rods 20 can also rotate in the horizontal and vertical directions, serving the same function as the two front seat support rods 20, and the two rear seat support rods 20 can also be removed from the support rod 12.

Furthermore, as shown in Figure 5, the top of the reinforcing vertical rod 14 is also provided with a limiting device 141 for preventing the seat support rod 20 from disengaging.

Specifically, since the top of the seat support rod 20 is detachably connected to the top of the reinforcing vertical rod 14, a limiting device 141 is provided on the connecting seat at the top of the reinforcing vertical rod 14 to prevent the seat support rod 20 from disengaging from the reinforcing vertical rod 14 due to jumping or other reasons. When the top of the seat support rod 20 is in a locked state with the top of the reinforcing vertical rod 14, the limiting device 141 can prevent the seat support rod 20 from disengaging. Specifically, the limiting device 141 includes a handle, which is rotatably connected to the connecting seat. When it is necessary to place the seat support rod 20, the handle can be rotated to a predetermined angle so that it will not affect the placement of the seat support rod 20, and then the seat support rod 20 can be placed between the baffles on both sides. The lateral movement of the seat support rod 20 is restricted by the baffle. After the seat support rod 20 is engaged with the reinforcing vertical rod 14, the handle can be rotated to make the handle abut against the seat support rod 20, preventing the seat support rod 20 from lifting. At the same time, in order to limit the wobbling of the handle, a limiting groove 203 is provided at the end where the seat support rod 20 is engaged with the reinforcing vertical rod 14. The height of the handle is slightly lower than that of the seat support rod 20, and it is made of a tough material so that the handle can rotate into the limiting groove 203, thereby limiting the wobbling of the handle. Alternatively, a tension spring can be provided at the bottom of the handle. When the handle rotates to the top of the limiting groove 203, the tension spring pulls the handle down, so that the handle is engaged in the limiting groove 203.

Furthermore, the steering wheel 17 and/or the fixed wheel 16 are electrically controlled to operate, and the steering rod assembly 19 can control the operation of the steering wheel 17 and/or the fixed wheel 16;

Specifically, in this embodiment, the steering wheel 17 and/or the fixed wheel 16 are preferably hub motors; another option is to set a central motor between the two fixed wheels 16, with the two outputs of the central motor respectively connected to the fixed wheels 16 for transmission, thereby driving the fixed wheels 16 to rotate. In this scheme, a control structure for controlling the rotation of the hub motor is provided on the steering rod assembly 19. The functions of this control structure include, but are not limited to, acceleration, braking, start/stop, etc. At the same time, a power supply and a controller for processing control information are provided on the trailer.

Furthermore, as shown in Figure 9, one end of the tail frame 22 is rotatably connected to the support vertical rod 12 on one side, and the other end of the tail frame 22 is provided with a rod sleeve 221 adapted to the support vertical rod 12.

Specifically, in one embodiment of the tail frame 22, one end of the tail frame 22 is rotatably connected to the support vertical rod 12 located on one side. The tail frame 22 is opened by rotating to one side. By opening the tail frame 22, the trailer can be loaded with large items. This opening method also allows the trailer to be used for pet shelters. At the other end of the tail frame 22, there is a sleeve 221 that is adapted to the support vertical rod 12. When the tail frame 22 does not need to be opened, it can be closed by fitting the sleeve 221 onto the support vertical rod 12.

Furthermore, as shown in Figure 10, the bottom side of the tail frame 22 is rotatably connected to the end crossbar 18, and the two ends of the tail frame 22 are respectively provided with rod sleeves 221 adapted to the supporting vertical rods 12. The two supporting vertical rods 12 connected to the fixed wheel 16 are respectively connected with connectors 222, and the end of the connector 222 away from the supporting vertical rod 12 is connected to the end of the tail frame 22.

Specifically, in another embodiment of the tail frame 22, the bottom side of the tail frame 22 is rotatably connected to the end crossbar 18 at the bottom end, and a connector 222 is connected to both ends of the tail frame 22. The other end of the connector 222 is connected to the support vertical bar 12. The tail frame 22 is laid flat at the rear end of the support vertical bar 12 by the traction of the connector 222, so that the trailer has the ability to load large goods and can also increase the loading capacity of the trailer. At both ends of the tail frame 22, there are also sleeves 221 that are adapted to the support vertical bar 12. When the tail frame 22 does not need to be opened, the tail frame 22 is closed by fitting the sleeves 221 onto the support vertical bar 12.

Furthermore, the side support 13 includes: a first support rod 131, a second support rod 132, a third support rod 133, and a fourth support rod 134; the middle part of the first support rod 131 and the middle part of the second support rod 132 are rotatably connected, the middle part of the third support rod 133 and the middle part of the fourth support rod 134 are rotatably connected, one end of the first support rod 131 and the second support rod 132 are rotatably connected to the corresponding supporting vertical rod 12, and the other end is rotatably connected to the corresponding reinforcing vertical rod 14, one end of the third support rod 133 and the fourth support rod 134 are rotatably connected to the corresponding supporting vertical rod 12, and the other end is rotatably connected to the corresponding reinforcing vertical rod 14, and each supporting vertical rod 12 is telescopically configurable;

Specifically, in one embodiment of the side support 13, each side support 13 includes: a first support rod 131, a second support rod 132, a third support rod 133, and a fourth support rod 134; wherein the first support rod 131 and the second support rod 132 are arranged crosswise and are rotatable at the intersection, the third support rod 133 and the fourth support rod 134 are arranged crosswise and are also rotatable at the intersection, the first support rod 131 and the second support rod 132 are located on the front side of the reinforcing vertical rod 14, the third support rod 133 and the fourth support rod 134 are located on the rear side of the reinforcing vertical rod 14, one end of the first support rod 131 adjacent to the reinforcing vertical rod 14 is rotatably connected to the connecting seat at the top of the reinforcing vertical rod 14, one end of the second support rod 132 adjacent to the reinforcing vertical rod 14 is rotatably connected to the connecting seat at the bottom of the reinforcing vertical rod 14, the other end of the first support rod 131 is rotatably connected to the connecting seat at the bottom of the front supporting vertical rod 12, and the other end of the second support rod 132 is rotatably connected to the connecting seat at the top of the front supporting vertical rod 12;

The end of the third support rod 133 adjacent to the reinforcing vertical rod 14 is rotatably connected to the connecting seat at the bottom of the reinforcing vertical rod 14. The end of the fourth support rod 134 adjacent to the reinforcing vertical rod 14 is rotatably connected to the connecting seat at the top of the reinforcing vertical rod 14. The other end of the third support rod 133 is rotatably connected to the connecting seat at the top of the rear support vertical rod 12. The other end of the fourth support rod 134 is rotatably connected to the connecting seat at the bottom of the rear support vertical rod 12. In this scheme, all support vertical rods 12 are telescopic, so that the first support rod 131, the second support rod 132, the third support rod 133, and the fourth support rod 134 can rotate relative to each other at the intersection point.

Further, as shown in Figure 4, the side support 13 includes: a first support rod 131, a second support rod 132, a third support rod 133, a fourth support rod 134, and a connecting rod 135; the first support rod 131 and the second support rod 132 are arranged crosswise and can rotate at the intersection, the third support rod 133 and the fourth support rod 134 are arranged crosswise and can rotate at the intersection, one end of the first support rod 131 is rotatably connected to the bottom end of the supporting vertical rod 12 connecting the steering wheel 17, one end of the second support rod 132 is rotatably connected to the connecting rod 135, and the other end of the connecting rod 135 is connected to the support of the steering wheel 17. The top end of the support rod 12 is rotatably connected, the other ends of the first support rod 131 and the second support rod 132 are respectively rotatably connected to the corresponding reinforcing rod 14, one end of the third support rod 133 and the fourth support rod 134 are rotatably connected to the corresponding reinforcing rod 14, the other end of the third support rod 133 is connected to a transition rod 135, the end of the transition rod 135 away from the third support rod 133 is rotatably connected to the top of the support rod 12 connected to the fixed wheel 16, and the end of the fourth support rod 134 away from the reinforcing rod 14 is rotatably connected to the bottom end of the support rod 12 connected to the fixed wheel 16;

Specifically, in another embodiment of the side support 13, each side support 13 includes: a first support rod 131, a second support rod 132, a third support rod 133, a fourth support rod 134, and a connecting rod 135; the first support rod 131 and the second support rod 132 are arranged crosswise and can rotate at the intersection, the third support rod 133 and the fourth support rod 134 are arranged crosswise and can rotate at the intersection, the first support rod 131 and the second support rod 132 are located on the front side of the reinforcing vertical rod 14, and the third support rod 133 and the fourth support rod 134 are located on the rear side of the reinforcing vertical rod 14;

The first support rod 131 is rotatably connected at one end near the reinforcing vertical rod 14 to the connecting seat at the top of the reinforcing vertical rod 14, and at the other end to the connecting seat at the bottom of the front support vertical rod 12; the second support rod 132 is rotatably connected at one end near the reinforcing vertical rod 14 to the connecting seat at the bottom of the reinforcing vertical rod 14, and at the other end of the second support rod 132 to the adapter rod 135, and at the end of the adapter rod 135 away from the second support rod 132 to the connecting seat at the top of the front support vertical rod 12.

The third support rod 133 is rotatably connected at one end near the reinforcing vertical rod 14 to the connecting seat at the bottom of the reinforcing vertical rod 14, and at the other end to the adapter rod 135. The adapter rod 135 is rotatably connected at one end away from the third support rod 133 to the connecting seat at the top of the rear support vertical rod 12. The fourth support rod 134 is rotatably connected at one end near the reinforcing vertical rod 14 to the connecting seat at the top of the reinforcing vertical rod 14, and at the other end to the connecting seat at the bottom of the rear support vertical rod 12. When the first support rod 131 and the second support rod 132 rotate relative to each other, the first support rod 131 drives the reinforcing vertical rod 14 to rise, and the second support rod 132 lifts the adapter rod 135, changing it from a flat position to an upright position. This replaces setting the support vertical rod 12 to a telescopic position, and also enables the rotation of the first support rod 131 and the second support rod 132, thereby realizing the folding of the trailer. The third support rod 133 and the fourth support rod 134 are similar.

The connection between the adapter rod 135 and the connecting seat is a limited rotation, that is, after the adapter rod 135 rotates to a predetermined angle, it will be restricted by the connecting seat and cannot continue to rotate, thereby avoiding affecting the stability of the side support 13.

In this design, the seat support rod 20 can also prevent the adapter rod 135 from arching due to jumping or other reasons during use, thereby stabilizing the side support 13.

Furthermore, as shown in Figure 4, the seat support rod 20 is also provided with a sleeve 202 that is adapted to the adapter rod 135 at the position corresponding to the adapter rod 135;

Specifically, in the second embodiment of the side support 13, a retainer 202 adapted to the adapter rod 135 is provided on the lower side of the seat support rod 20 at the position corresponding to the adapter rod 135. When the seat support rod 20 is placed flat above the side support 13, the retainer 202 is partially wrapped around the outside of the adapter rod 135. In this way, the side support 13 is restricted from swaying and bending after being subjected to lateral force. At the same time, the adapter rod 135 is pressed down by the seat support rod 20 to prevent the adapter rod 135 from arching during use.

In summary, this application enhances the lateral load-bearing capacity of the side support by providing a reinforcing vertical bar in the middle and supporting horizontal bars, while also providing a seat support bar above the side support to further improve its stability and ensure the stability of the trailer. The trailer's passenger-carrying function is achieved through the support components, resulting in a highly stable trailer with a high passenger safety factor and a large load capacity, thus meeting different usage needs.

The present invention is not limited to the description in the specification and embodiments, and thus other advantages and modifications can be readily realized by those skilled in the art. Therefore, the present invention is not limited to the specific details, representative devices and illustrated examples shown and described herein without departing from the spirit and scope of the general concept as defined by the claims and their equivalents.

Claims (17)

A folding passenger trailer, characterized in that it comprises: a first base frame and a second base frame, wherein one end of the first base frame and the second base frame are rotatably connected; The first base frame and the second base frame are respectively connected to the two sides of their opposite ends. The two supporting vertical rods on the same side are rotatably connected to a side bracket. Each side bracket is provided with a reinforcing vertical rod in the middle. The front and rear ends of the side bracket can be moved and retracted toward the position of the reinforcing vertical rod. The bottom ends of the two supporting vertical rods at one end are fixedly connected to fixed wheels, and the bottom ends of the two supporting vertical rods at the other end are rotatably connected to directional wheels; A crossbar is connected between the top and bottom ends of the two supporting vertical rods connecting the direction wheel and between the bottom ends of the two supporting vertical rods connecting the fixed wheel; The end crossbar located at the bottom end of the two supporting vertical bars connecting the steering wheel is also movably connected to a steering rod assembly. The steering rod assembly can rotate vertically and laterally relative to the end crossbar. The bottom end of the steering rod assembly is connected to the steering wheel, and the steering rod assembly controls the rotation of the steering wheel. The top ends of the two supporting vertical rods connecting the steering wheel are respectively rotatably connected to seat support rods. The end of each seat support rod away from the supporting vertical rod is connected to the top of the corresponding reinforcing vertical rod. A support member can also be detachably connected between the two seat support rods. The top of the reinforcing vertical rod is also provided with a limiting device to prevent the seat support rod from detaching. According to claim 1, the folding passenger trailer is characterized in that the bottom ends of the two supporting vertical rods connecting the steering wheel are respectively rotatably connected to foot pedals. According to claim 1, the folding passenger trailer is characterized in that a supporting crossbar is fixedly connected between the bottom ends of the two reinforcing vertical bars. According to claim 3, the folding passenger trailer is characterized in that a first hook is provided on both sides of the end where the first base frame is connected to the second base frame, and a second hook is provided on both sides of the end where the second base frame is connected to the first base frame, wherein the first hook and the second hook cooperate to clamp the support crossbar. According to claim 1, the folding passenger trailer is characterized in that a clamping device is further provided in the middle of the end crossbar located at the top of the two supporting vertical rods connecting the steering wheel, the clamping device being used to restrict the vertical rotation of the steering rod assembly. According to claim 5, the folding passenger trailer is characterized in that the clamp device includes: a clamp sleeve and a limiting member; the clamp sleeve is adapted to the steering rod assembly, the clamp sleeve has an opening, and the limiting member is disposed at the opening for closing the opening. According to claim 1, the folding passenger trailer is characterized in that a stabilizing rod is provided between the top ends of the two supporting vertical rods connecting the fixed wheel, one end of the stabilizing rod is rotatably connected to one of the supporting vertical rods, and the other end of the stabilizing rod is detachably connected to the other supporting vertical rod. According to claim 7, the folding passenger trailer is characterized in that a detachable sliding member is provided at the end of the stabilizer bar away from the end rotatably connected to one of the supporting vertical bars, the detachable sliding member is slidably connected to the stabilizer bar, and the detachable sliding member cooperates with the corresponding supporting vertical bar to restrict the disassembly of the stabilizer bar. According to claim 1, the folding passenger trailer is characterized in that the top ends of the two supporting vertical rods connecting the fixed wheels are respectively rotatably connected to the seat support rods. According to claim 1, the folding passenger trailer is characterized in that the side support includes: a first support rod, a second support rod, a third support rod, and a fourth support rod; the middle portions of the first support rod and the second support rod are rotatably connected, the middle portions of the third support rod and the fourth support rod are rotatably connected, one end of the first support rod and the second support rod are rotatably connected to the corresponding supporting vertical rod, and the other end is rotatably connected to the corresponding reinforcing vertical rod, one end of the third support rod and the fourth support rod are rotatably connected to the corresponding supporting vertical rod, and the other end is rotatably connected to the corresponding reinforcing vertical rod, and each supporting vertical rod is telescopically configurable. According to claim 1, the folding passenger trailer is characterized in that the side support includes: a first support rod, a second support rod, a third support rod, a fourth support rod, and a connecting rod; the first support rod and the second support rod are arranged crosswise and can rotate at the intersection, the third support rod and the fourth support rod are arranged crosswise and can rotate at the intersection, one end of the first support rod is rotatably connected to the bottom end of the supporting vertical rod connecting the steering wheel, one end of the second support rod is rotatably connected to the connecting rod, the other end of the connecting rod is rotatably connected to the top end of the supporting vertical rod connecting the steering wheel, the other ends of the first support rod and the second support rod are respectively rotatably connected to the corresponding reinforcing vertical rod, one end of the third support rod and the fourth support rod are rotatably connected to the corresponding reinforcing vertical rod, the other end of the third support rod is connected to the connecting rod, the end of the connecting rod away from the third support rod is rotatably connected to the top end of the supporting vertical rod connecting the fixed wheel, and the end of the fourth support rod away from the reinforcing vertical rod is rotatably connected to the bottom end of the supporting vertical rod connected to the fixed wheel. According to claim 1, the folding passenger trailer is characterized in that the steering wheel and/or the fixed wheel are electrically controlled to operate, and the steering rod assembly can control the operation of the steering wheel and/or the fixed wheel. The folding passenger trailer according to claim 1 is characterized in that a rotatable tail frame is provided between the two supporting vertical rods connected to the fixed wheels. According to claim 13, the folding passenger trailer is characterized in that one end of the tail frame is rotatably connected to a supporting vertical rod on one side, and the other end of the tail frame is provided with a sleeve adapted to the supporting vertical rod. According to claim 13, the folding passenger trailer is characterized in that the bottom side of the tail frame is rotatably connected to the end crossbar, the two ends of the tail frame are respectively provided with sleeves adapted to the supporting vertical rods, the two supporting vertical rods connected to the fixed wheel are respectively connected with connectors, and the end of the connector away from the supporting vertical rod is connected to the end of the tail frame. According to claim 11, the folding passenger trailer is characterized in that a sleeve adapted to the adapter rod is provided at the position corresponding to the seat support rod and the adapter rod, and the seat support rod presses the adapter rod through the sleeve. The folding passenger trailer according to claim 1, 10, or 11 is characterized in that the reinforcing vertical rod is telescopically oriented.