Reinforcing structure of electric collapsible wagon

Abstract

Provided is a reinforcing structure of an electric collapsible wagon, comprising: a collapsible wagon body (10), wherein wheels (11) are provided at the bottom of the collapsible wagon body (10), a direction control device (12) is further provided on the collapsible wagon body (10), reinforcing rod assemblies (13) are respectively connected to two sides of the top of the collapsible wagon body (10), and the reinforcing rod assemblies (13) are detachably connected to the middle of the collapsible wagon body (10); and seat devices (14) are further detachably provided between the two reinforcing rod assemblies (13). By providing the reinforcing rod assemblies (13) on the collapsible wagon body (10), the movement of the collapsible wagon body (10) in the length direction and the transverse direction is limited, improving the stability of the collapsible wagon body (10) when in use, and additionally, the reinforcing rod assemblies (13) also provide support points for placing the seat devices (14), so as to enable a user to sit on and drive the electric wagon, improving the comfort of using the electric wagon. Moreover, the seat devices (14) can further limit the transverse movement of two side support assemblies (102), thereby further improving the stability of the collapsible wagon body (10) and prolonging the service life of the collapsible wagon body (10).

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of electric collapsible wagons, and in particular to a reinforcing structure of an electric collapsible wagon. BACKGROUND

[0002] A collapsible wagon is a foldable and towable cargo carrier that is easy to use and store, and saves both time and labor in cargo transportation. The collapsible wagon has been widely used for carrying things, and is typically applied to outdoor activities or short-distance transport currently.

[0003] The folding function of an electric collapsible wagon in the prior art is typically achieved through a movable connection method, and for example, Chinese Patent Application No. CN202222336784.8 discloses a foldable beach wagon, and the foldable beach wagon includes a chassis folding connecting seat, a chassis folding linkage tube, a lower folding seat, and an upper folding seat, where the upper folding seat is disposed at an upper end of the lower folding seat, a side folding mechanism is disposed between the upper folding seat and the lower folding seat in a left-right direction, a telescopic mechanism is disposed between the lower folding seat and the upper folding seat, and a front-rear folding mechanism is disposed between the lower folding seat and the upper folding seat in a front-rear direction; and it can be known from illustrations and descriptions in the specification that a middle portion of the side folding mechanism is not connected to the chassis folding linkage tube, the side folding mechanism has a double-fork structure, and the chassis folding linkage tube has a single-fork structure, such that during use, the side folding mechanism deflects outward due to extrusion by cargo, easily causing deformation at a joint between the chassis folding linkage tube and the connecting seat, resulting in formation of gaps, and significantly affecting stability during subsequent use.

[0004] Therefore, there is an urgent need to design a reinforcing structure of an electric collapsible wagon to overcome the above one or more defects in the prior art. SUMMARY

[0005] The technical solution adopted by the present disclosure to solve the above technical problems is as follows: a reinforcing structure of an electric collapsible wagon, including: a collapsible wagon body, where the collapsible wagon body includes end frame assemblies, side frame assemblies, and a bottom frame assembly; two end frame assemblies are arranged, the two end frame assemblies are spaced apart from each other in a front-rear direction, two side frame assemblies are arranged, the two side frame assemblies are disposed between the two end frame assemblies, the two side frame assemblies are spaced apart from each other, front ends of the two side frame assemblies are respectively rotatably connected to the front end frame assembly, and both ends of each of the side frame assemblies are capable of folding toward a middle in a length direction; at least one bottom frame assembly is arranged, the bottom frame assembly is disposed between the two end frame assemblies and between the two side frame assemblies, both ends of the bottom frame assembly are respectively rotatably connected to the corresponding end frame assemblies, and the bottom frame assembly is capable of converging toward the middle; wheels are disposed at a bottom of the collapsible wagon body, the collapsible wagon body is further provided with a direction control device connected to the wheels for controlling steering of the wheels, reinforcing rod assemblies are respectively connected to two sides of a top of the front end frame assembly, the other end of each of the reinforcing rod assemblies is connected to the rear end frame assembly, and the reinforcing rod assemblies are detachably connected to the side frame assemblies; a seat device is detachably disposed between the two reinforcing rod assemblies; and a controller and a power supply are further disposed on the collapsible wagon body, the power supply is electrically connected to the controller, and the wheels at at least one end of the collapsible wagon body are connected to the controller.

[0006] In a preferred embodiment, each of the end frame assemblies includes a first X-shaped bracket and vertical support rods, two vertical support rods are arranged, a connecting seat is respectively disposed at a top end and a bottom end of each of the vertical support rods, and four ends of the first X-shaped bracket are respectively rotatably connected to the corresponding connecting seats; each of the side frame assemblies includes a second X-shaped bracket, at least one second X-shaped bracket is provided, and the second X-shaped bracket is rotatably connected to the connecting seats on a same side of the two end frame assemblies.

[0007] In a preferred embodiment, each of the reinforcing rod assemblies includes a first reinforcing rod, a second reinforcing rod, and a connecting member; one end of the first reinforcing rod is rotatably connected to the front end frame assembly, one end of the second reinforcing rod is rotatably connected to the first reinforcing rod via the connecting member, the other end of the second reinforcing rod is rotatably connected to the rear end frame assembly, and the first reinforcing rod and the second reinforcing rod rotate relative to the connecting member respectively.

[0008] In a preferred embodiment, a limiting structure is rotatably disposed on the connecting member, a limiting member is disposed on the side frame assembly at a position corresponding to the limiting structure, and the limiting structure cooperates with the limiting member to limit folding of the reinforcing rod assembly.

[0009] In a preferred embodiment, the seat device has a rigid plate structure, and both ends of the seat device are respectively provided with snap grooves adapted to the reinforcing rod assemblies.

[0010] In a preferred embodiment, an end of the collapsible wagon body is further connected to a drawbar assembly, a bottom of the drawbar assembly is rotatably connected to a strut adapter, one end of the strut adapter is rotatably connected to a first strut, and the other end of the strut adapter is connected to a second strut, where ends of the first strut and the second strut away from the strut adapter are respectively rotatably connected to the end frame assembly, the first strut and the second strut are capable of rotating vertically relative to the strut adapter and the end frame assembly respectively, and the drawbar assembly is capable of rotating horizontally relative to the strut adapter.

[0011] In a preferred embodiment, footrest bars are further disposed on the first strut and the second strut or the end frame assembly.

[0012] In a preferred embodiment, synchronizing teeth are respectively disposed at ends of the first strut and the second strut connected to the strut adapter, the two synchronizing teeth are meshed with each other, and a clearance hole is formed in a top wall of the strut adapter.

[0013] In a preferred embodiment, the drawbar assembly includes a first folding member and a steering rod, the first folding member is rotatably connected to the strut adapter, the first folding member is capable of rotating horizontally relative to the strut adapter, a bottom end of the steering rod is rotatably connected to the first folding member, the steering rod is capable of rotating vertically relative to the first folding member, and the front end frame assembly is further provided with a clamping device configured to limit rotation of the steering rod relative to the first folding member.

[0014] In a preferred embodiment, the steering rod has a telescopic structure, a handle is disposed at a top end of the steering rod, a plurality of control buttons are arranged on the handle, and the control buttons are connected to the controller.

[0015] In a preferred embodiment, a detent pin is further disposed on the steering rod, and the detent pin is configured to limit telescopic movement of the steering rod.

[0016] In a preferred embodiment, the direction control device includes transmission rods; a plurality of transmission rods are arranged, the plurality of transmission rods are sequentially rotatably connected end to end, and head ends and tail ends of the connected transmission rods are respectively rotatably connected to the corresponding wheels; and a swing arm is further connected to the bottom of the drawbar assembly, an end of the swing arm away from the drawbar assembly is rotatably connected to the middle transmission rod, and when the drawbar assembly rotates horizontally, the swing arm is driven to swing, and the swing arm drives the transmission rods to move.

[0017] In a preferred embodiment, the direction control device includes an angle sensor, the angle sensor is disposed on the drawbar assembly, the angle sensor is connected to the controller, and when the drawbar assembly rotates horizontally, the angle sensor identifies a rotation direction and angle of the drawbar assembly.

[0018] The present disclosure has the beneficial effects as follows: By arranging the reinforcing rod assemblies on the collapsible wagon body, the movement of the two side frame assemblies in a length direction and a transverse direction is limited in the present disclosure, improving the stability of the collapsible wagon body when in use, and additionally, the reinforcing rod assemblies also provide support points for placing the seat devices, such that a user can sit on and drive the electric wagon, thereby enhancing the comfort of using the electric wagon. Moreover, the seat devices further limit the transverse movement of two side frame assemblies, thereby further enhancing the stability of the collapsible wagon body and prolonging the service life of the collapsible wagon body. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] FIG. 1 is a schematic structural diagram of the present disclosure.

[0020] FIG. 2 is a schematic structural diagram of a collapsible wagon body of the present disclosure.

[0021] FIG. 3 is a schematic structural diagram of a reinforcing rod assembly of the present disclosure.

[0022] FIG. 4 is a schematic structural diagram of a seat device of the present disclosure.

[0023] FIG. 5 is a schematic diagram of cooperation between a drawbar assembly and a direction control device of the present disclosure.

[0024] FIG. 6 is a schematic structural diagram of a first strut and a second strut of the present disclosure.

[0025] FIG. 7 is a schematic diagram of the present disclosure in a folded state.

[0026] Reference numerals in the figures:

[0027] 10-collapsible wagon body; 101-end frame assembly; 1011-first X-shaped bracket; 1012-vertical support rod; 1013-connecting seat; 1014-clamping device; 102-side frame assembly; 1021-second X-shaped bracket; 1022-limiting member; 103-bottom frame assembly; 11-wheel; 12-direction control device; 121-transmission rod; 13-reinforcing rod assembly; 131-first reinforcing rod; 132-second reinforcing rod; 133-connecting member; 134-limiting structure; 14-seat device; 141-snap groove; 15-drawbar assembly; 151-first folding member; 152-steering rod; 153-handle; 154-detent pin; 155-detent hole; 156-swing arm; 16-strut adapter; 161-first strut; 162-second strut; 163-synchronizing teeth; and 164-clearance hole. DETAILED DESCRIPTIONS OF THE EMBODIMENTS

[0028] In order to enable the objectives, features, and advantages mentioned above of the present disclosure to be more apparent and easily understood, specific embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. Numerous specific details are set forth in the following description to facilitate a thorough understanding of the present disclosure. However, the present disclosure may be implemented in many other ways than those described herein, and those skilled in the art may make similar improvements without departing from the connotation of the present disclosure. Therefore, the present disclosure is not limited by the specific embodiments disclosed below.

[0029] In the description of the examples of the present disclosure, it should be noted that, unless otherwise explicitly specified and defined, the terms “connection” and “mounting” should be understood in a broad sense. For example, “connection” may be a detachable connection, a non-detachable connection; and may be a direct connection, or an indirect connection via an intermediate medium. Further, “communication” may be a direct communication or an indirect communication via an intermediate medium. The term “fixed” refers to an interconnection where the relative positional relationship remains unchanged after the connection. The orientation terms mentioned in the present disclosure, such as “inside”, “outside”, “top”, “bottom” and the like, only indicate the directions in the accompanying drawings. Therefore, the orientation terms are used to better illustrate and understand the examples of the present disclosure, and are not intended to indicate or imply that the referenced device or element must have a particular orientation and be constructed and operative in a particular orientation, and thus may not be construed as a limitation on the examples of the present disclosure.

[0030] In the examples of the present disclosure, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined with “first” and “second” may explicitly or implicitly include one or more of the features.

[0031] In the examples of the present disclosure, the term “and / or”, which is merely an association relation describing an associated object, means that there may be three relations, for example, A and / or B may represent three situations: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " herein generally indicates that the associated objects are in an “or” relationship.

[0032] In the present specification, the description of reference terms such as “one example” and “some examples” means that specific features, structures or characteristics described in combination with this embodiment are included in one or more examples of the present disclosure. Therefore, the statements appearing in different parts of the present specification, such as "in one embodiment", "in some embodiments", "in other embodiments", "in some other embodiments", and the like, do not necessarily refer to the same embodiment, but mean "one or more, but not all embodiments", unless otherwise specifically emphasized in any other way. The terms “including”, “containing”, “having” and any variations thereof mean “including but not limited to”, unless otherwise specifically emphasized in any other way. Therefore, the present disclosure is not to be limited by the specific examples disclosed below.

[0033] As shown in FIGS. 1 to 7, the present disclosure provides a reinforcing structure of an electric collapsible wagon, including: a collapsible wagon body 10, where the collapsible wagon body 10 includes end frame assemblies 101, side frame assemblies 102, and a bottom frame assembly 103; two end frame assemblies 101 are arranged, the two end frame assemblies 101 are spaced apart from each other in a front-rear direction, two side frame assemblies 102 are arranged, the two side frame assemblies 102 are disposed between the two end frame assemblies 101, the two side frame assemblies 102 are spaced apart from each other, front ends of the two side frame assemblies 102 are respectively rotatably connected to the front end frame assembly 101, and both ends of each of the side frame assemblies 102 are capable of folding toward a middle in a length direction; at least one bottom frame assembly 103 is arranged, the bottom frame assembly 103 is disposed between the two end frame assemblies 101 and between the two side frame assemblies 102, both ends of the bottom frame assembly 103 are respectively rotatably connected to the corresponding end frame assemblies 101, and the bottom frame assembly 103 is capable of converging toward the middle; wheels 11 are disposed at a bottom of the collapsible wagon body 10, the collapsible wagon body 10 is further provided with a direction control device 12 connected to the wheels 11 for controlling steering of the wheels 11, reinforcing rod assemblies 13 are respectively connected to two sides of a top of the front end frame assembly 101, the other end of each of the reinforcing rod assemblies 13 is connected to the rear end frame assembly 101, the reinforcing rod assemblies 13 are foldable from the middle, and the reinforcing rod assemblies 13 are detachably connected to the side frame assemblies 102; a seat device 14 is detachably disposed between the two reinforcing rod assemblies 13; a controller (not shown in the figures) and a power supply (not shown in the figures) are further disposed on the collapsible wagon body 10, the power supply is electrically connected to the controller, and the wheels 11 at at least one end of the collapsible wagon body are connected to the controller; and

[0034] specifically, the collapsible wagon body 10 is a rectangular collapsible wagon body 10 with a top opening formed by enclosing two side frame assemblies 102, two end frame assemblies 101, and one bottom frame assembly 103, and the collapsible wagon body 10 is capable of converging toward a middle from front, rear, left, and right sides, to reduce occupied space of the collapsible wagon body 10 when not in use and enhance portability of the electric wagon; wheels 11 are respectively disposed at both ends of the bottom of the collapsible wagon body 10, the wheels 11 at one end thereof are configured to control a traveling direction of the electric wagon, and to enhance loading stability, increase carrying capacity, and prolong service life of the collapsible wagon body 10, reinforcing rod assemblies 13 are respectively rotatably connected between two sides of the both end frame assemblies 101, where middle portions of the reinforcing rod assemblies 13 are detachably connected to the side frame assembly 102, and may be fixed to the side frame assemblies 102 when needed or detached when not needed; through arrangement of the reinforcing rod assemblies 13, the end frame assemblies 101 at both ends and the side frame assemblies 102 are connected to form a rigid structure that limits outward expansion of the side frame assemblies 102; since the collapsible wagon body 10 is foldable, each of the reinforcing rod assemblies 13 is foldable from the middle to prevent the reinforcing rod assemblies 13 from limiting folding of the collapsible wagon body 10; when the collapsible wagon body 10 is not in use, connections between the middle portions of the reinforcing rod assemblies 13 and the side frame assemblies 102 are released, then the collapsible wagon body 10 is folded, and in this case, both ends of the reinforcing rod assemblies 13 are compressed and folded synchronously from the middle, thereby preventing interference with folding of the collapsible wagon body 10; to optimize user experience and use comfort, the seat device 14 is detachably connected at one end of each of the two reinforcing rod assemblies 13, and the seat device 14 allows a user to sit on the collapsible wagon body 10, and may be detached when not in use to prevent interference with use; the collapsible wagon body 10 is further provided with a controller configured to control operation of the wheels 11 and a power supply configured to supply electric power to the wheels 11, and the wheels 11 at least one end are the wheels 11 each internally provided with a hub motor and connected to the controller to achieve electrification of the collapsible wagon body 10; in use, the user can sit on the seat device 14 to drive the collapsible wagon body 10, a direction control device 12 is further disposed on the wheels 11 at one end, the direction control device 12 is configured to control orientation of the wheels 11, and orientation control may be achieved by mechanical structure control or differential speed control of the wheels 11; and additionally, traveling control of the wagon body may be remote control.

[0035] Further, each of the end frame assemblies 101 includes a first X-shaped bracket 1011 and vertical support rods 1012, two vertical support rods 1012 are arranged, a connecting seat 1013 is respectively disposed at a top end and a bottom end of each of the vertical support rods 1012, and four ends of the first X-shaped bracket 1011 are respectively rotatably connected to the corresponding connecting seats 1013; each of the side frame assemblies 102 includes a second X-shaped bracket 1021, at least one second X-shaped bracket 1021 is provided, and the second X-shaped bracket 1021 is rotatably connected to the connecting seats 1013 on a same side of the two end frame assemblies 101; and

[0036] specifically, each of the end frame assemblies 101 includes one first X-shaped bracket 1011, the first X-shaped bracket 1011 is capable of folding or unfolding relatively around an intersection thereof, connecting seats 1013 are respectively rotatably connected to four ends of the first X-shaped bracket 1011, a vertical support rod 1012 is fixedly connected between two connecting seats 1013 on the same side, and two vertical support rods 1012 converge or unfold toward each other in parallel when the first X-shaped bracket 1011 is folded or unfolded; each of the side frame assemblies 102 includes at least one second X-shaped bracket 1021, the second X-shaped bracket 1021 is also capable of folding or unfolding relatively around an intersection thereof, and the second X-shaped bracket 1021 also has four ends; when only one second X-shaped bracket 1021 is provided, the second X-shaped bracket 1021 is rotatably connected to four connecting seats 1013 on the same side of the two end frame assemblies 101, and when two second X-shaped brackets 1021 are arranged, the two second X-shaped brackets 1021 are rotatably connected to each other at one end respectively, the two second X-shaped brackets 1021 form an integral structure after connection, a front end of the integral structure is rotatably connected to the front connecting seat 1013, and a rear end of the integral structure is rotatably connected to the rear connecting seats 1013; the bottom frame assembly 103 is composed of four connecting rods and a mounting base, the four connecting rods are respectively rotatably connected to the mounting base, and at least one bottom frame assembly 103 is provided; when only one bottom frame assembly is provided, an end of each of the four connecting rods away from the mounting base is respectively rotatably connected to the corresponding connecting seat 1013, and when two bottom frame assemblies 103 are arranged, a side of each of the bottom frame assemblies 103 is rotatably connected to a middle bottom of the corresponding side frame assembly 102; and during folding, each of the bottom frame assemblies 103 arches upward from the middle to converge the four connecting rods, such that the end frame assemblies 101 are pulled to converge, and the end frame assemblies 101 drive the side frame assemblies 102 to fold, thereby achieving overall folding of the collapsible wagon body 10.

[0037] It should be noted that the vertical support rods 1012 have a telescopic structure to adapt to a height difference generated when the first X-shaped bracket 1011 is folded, and when two second X-shaped brackets 1021 are arranged, connection joints of the two second X-shaped brackets 1021 overlap, and this structure effectively prevents the second X-shaped brackets 1021 from sinking under heavy load.

[0038] Further, in the present embodiment, each of the reinforcing rod assemblies 13 includes a first reinforcing rod 131, a second reinforcing rod 132, and a connecting member 133; one end of the first reinforcing rod 131 is rotatably connected to the front end frame assembly 101, one end of the second reinforcing rod 132 is rotatably connected to the first reinforcing rod 131 via the connecting member 133, the other end of the second reinforcing rod 132 is rotatably connected to the rear end frame assembly 101, and the first reinforcing rod 131 and the second reinforcing rod 132 rotate relative to the connecting member 133 respectively; and

[0039] specifically, the first reinforcing rod 131 and the second reinforcing rod 132 are connected via the connecting member 133, and the first reinforcing rod 131 and the second reinforcing rod 132 are respectively rotatably connected to the connecting member 133 and rotate vertically relative to the connecting member 133 respectively, such that when the collapsible wagon body 10 is folded, the first reinforcing rod 131 and the second reinforcing rod 132 are folded synchronously by compression; and when the collapsible wagon body 10 is unfolded, the reinforcing rod assemblies 13 are pulled straight synchronously, and then are fixedly connected to the side frame assemblies 102 through the connecting members 133, and limitation of the reinforcing rod assemblies 13 enhances stability of the collapsible wagon body 10 in a length direction and width direction.

[0040] Further, a limiting structure 134 is rotatably disposed on the connecting member 133, a limiting member 1022 is disposed on the side frame assembly 102 at a position corresponding to the limiting structure 134, and the limiting structure 134 cooperates with the limiting member 1022 to limit folding of the reinforcing rod assembly 13; and

[0041] specifically, to connect the end frame assembly 101 with the side frame assembly 102, a limiting structure 134 is further rotatably disposed on the connecting member 133, and the limiting structure 134 is capable of rotating horizontally on the connecting member 133; when the side frame assembly 102 and the reinforcing rod assembly 13 are unfolded, a limiting member 1022 is disposed on the side frame assembly 102 at a position corresponding to the connecting member 133, and the limiting structure 134 cooperates with the limiting member 1022 in various ways; and in the present embodiment, one cooperating way is disclosed for ease of understanding: the limiting structure 134 is a rotating handle, the limiting member 1022 is provided with a through hole adapted to the rotating handle, and when the side frame assembly 102 and the reinforcing rod assembly 13 are unfolded, the rotating handle passes through the through hole, and then the rotating handle is rotated to be staggered with the through hole, such that the rotating handle cannot disengage from the limiting member 1022 through the through hole, connection and cooperation between the reinforcing rod assembly 13 and the side frame assembly 102 are achieved, and the side frame assembly 102 is connected to the end frame assembly 101, thereby enhancing the stability of the collapsible wagon.

[0042] Arrangement of the limiting member 1022 ensures that when two side frame assemblies 102 are arranged, the limiting member 1022 is disposed at a position of connection between the two side frame assemblies 102, and when only one side frame assembly 102 is provided, the limiting effect is achieved by the reinforcing rod assembly 13 itself; and for example, a spring-loaded latch pin is disposed in the connecting member 133, and when the rotating handle rotates, the latch pin is pushed out and inserted into the first reinforcing rod 131 and the second reinforcing rod 132 to limit rotation of the first reinforcing rod 131 and the second reinforcing rod 132, so as to achieve the limiting effect, where the latch pin is reset by a spring.

[0043] Further, the seat device 14 has a rigid plate structure, and both ends of the seat device 14 are respectively provided with snap grooves 141 adapted to the reinforcing rod assemblies 13; and

[0044] specifically, to further enhance the use stability of the collapsible wagon body 10 on the basis of the above structure, the seat device 14 in the present disclosure preferably has a rigid structure such as a wooden board with a cushion, both ends of the seat device 14 are respectively provided with snap grooves 141 adapted to the reinforcing rod assemblies 13, and the seat device 14 is detachably connected to the reinforcing rod assemblies 13 via the snap grooves 141; and since the seat device 14 has a rigid plate structure, the seat device intrinsically has both thrust and tension, and the thrust and tension act on the reinforcing rod assemblies 13 through the snap grooves 141 and further act on the side frame assemblies 102 through the reinforcing rod assemblies 13, thereby further limiting lateral deformation of the side frame assemblies 102, while vertical deformation is limited by the reinforcing rod assemblies 13.

[0045] It should be noted that insertion posts (not shown in the figures) may be disposed in the snap grooves 141 of the seat device 14 to prevent the seat device 14 from sliding on the reinforcing rod assemblies 13, and inserting holes (not shown in the figures) may be formed on the first reinforcing rod 131 and / or the second reinforcing rod 132, and cooperation between the insertion posts and the inserting holes limits sliding of the seat device 14 and enhances use safety.

[0046] Further, in the present embodiment, an end of the collapsible wagon body 10 is further connected to a drawbar assembly 15, a bottom of the drawbar assembly 15 is rotatably connected to a strut adapter 16, one end of the strut adapter 16 is rotatably connected to a first strut 161, and the other end of the strut adapter 16 is connected to a second strut 162, where ends of the first strut 161 and the second strut 162 away from the strut adapter 16 are respectively rotatably connected to the end frame assembly 101, the first strut 161 and the second strut 162 are capable of rotating vertically relative to the strut adapter 16 and the end frame assembly 101 respectively, and the drawbar assembly 15 is capable of rotating horizontally relative to the strut adapter 16; and

[0047] specifically, a drawbar assembly 15 is connected to an end of the collapsible wagon body 10 to enhance driving safety and control convenience, the drawbar assembly 15 is configured to control a traveling direction of and tow the collapsible wagon body 10, a strut adapter 16 is rotatably disposed at a bottom of the drawbar assembly 15, and the drawbar assembly 15 is capable of rotating horizontally relative to the strut adapter 16 to facilitate steering operation; one end of the strut adapter 16 is rotatably connected to a first strut 161, the other end of the strut adapter 16 is rotatably connected to a second strut 162, the first strut 161 and the second strut 162 are capable of rotating vertically relative to the strut adapter 16, and ends of the first strut 161 and the second strut 162 away from the strut adapter 16 are respectively rotatably connected to the corresponding connecting seats 1013 to support the drawbar assembly 15 through the first strut 161 and the second strut 162; since the first strut 161 and the second strut 162 are rotatably connected to the connecting seats 1013 and the strut adapter 16 respectively, the first strut 161 and the second strut 162 are also capable of rotating and folding synchronously when the collapsible wagon body 10 is folded, thereby preventing interference with folding of the collapsible wagon body 10; and to facilitate folding, a preset included angle is formed between the first strut 161 and the second strut 162, that is, the first strut 161 and the second strut 162 are arranged in an arched shape, such that during folding of the collapsible wagon body 10 in this case, the first strut 161 and the second strut 162 are synchronously rotated and folded under compression, thereby facilitating use.

[0048] Further, footrest bars (not shown in the figures) are further disposed on the first strut 161 and the second strut 162 or the end frame assembly 101; and

[0049] specifically, to facilitate foot placement when the user sits on the seat device 14 for driving, footrest bars are disposed on the first strut 161 and the second strut 162 or two connecting seats 1013 at the bottom of the front end frame assembly 101; and preferably, the footrest bars are limitedly rotatable, that is, the footrest bars may be rotated by a certain angle to unfold for foot placement, or may be rotated to fold for storage.

[0050] Further, in the present embodiment, synchronizing teeth 163 are respectively disposed at ends of the first strut 161 and the second strut 162 connected to the strut adapter 16, the two synchronizing teeth 163 are meshed with each other, and a clearance hole 164 is formed in a top wall of the strut adapter 16; and

[0051] specifically, the first strut 161 and the second strut 162 are connected via the strut adapter 16, the two struts are capable of rotating vertically relative to the strut adapter 16, and since the first strut 161 and the second strut 162 are not directly connected, rotation angles of the two struts may be inconsistent during rotation, such that the strut adapter 16 tilts and the drawbar assembly 15 further tilts left and right; to solve this problem, synchronizing teeth 163 are embedded at adjacent ends of the first strut 161 and the second strut 162 respectively, the two synchronizing teeth 163 are meshed with each other, and meshing of the gears ensures synchronous and equal-angle rotation of the first strut 161 and the second strut 162, thereby ensuring that the drawbar assembly 15 always keeps vertical; and the clearance hole 164 is configured to provide clearance for movement of the synchronizing teeth 163 when the synchronizing teeth 163 are driven by the first strut 161 and the second strut 162 to move, thereby preventing the synchronizing teeth 163 from failing to rotate due to limitation by the strut adapter 16 and ensuring in-place rotation of the first strut 161 and the second strut 162.

[0052] Further, in the present embodiment, the drawbar assembly 15 includes a first folding member 151 and a steering rod 152, the first folding member 151 is rotatably connected to the strut adapter 16, the first folding member 151 is capable of rotating horizontally relative to the strut adapter 16, a bottom end of the steering rod 152 is rotatably connected to the first folding member 151, the steering rod 152 is capable of rotating vertically relative to the first folding member 151, and the front end frame assembly 101 is further provided with a clamping device 1014 configured to limit rotation of the steering rod 152 relative to the first folding member 151; and

[0053] specifically, the drawbar assembly 15 includes a first folding member 151, the first folding member 151 is rotatably connected to the strut adapter 16, and the first folding member 151 is capable of horizontally rotating relative to the strut adapter 16; the bottom end of the steering rod 152 is hinged to a top of the first folding member 151, and the steering rod 152 is capable of rotating vertically relative to the first folding member 151; and a clamping device 1014 is disposed at a middle of the first X-shaped bracket 1011 at a front end of the collapsible wagon body 10, and the clamping device 1014 is adapted to the steering rod 152 and configured to fix the steering rod 152 when the user sits on the seat device 14 for driving, so as to prevent rotation of the steering rod relative to the first folding member 151 and ensure use safety.

[0054] Further, in the present embodiment, the steering rod 152 has a telescopic structure, a handle 153 is disposed at a top end of the steering rod 152, a plurality of control buttons (not shown in the figures) are arranged on the handle 153, and the control buttons are connected to the controller; and

[0055] specifically, the steering rod 152 has a telescopic structure and is adjustable in length, and when the steering rod is disposed at an end of the collapsible wagon body 10, height adjustment is allowed; a handle 153 is further disposed at a top end of the steering rod 152, the handle 153 facilitates holding by the user, a plurality of control buttons are further arranged on the handle 153, and the control buttons have the following functions, including but not limited to: horn, turn signal, vehicle start, forward / reverse, speed control, and braking, where the braking may be electronic braking or mechanical braking such as disc braking or drum braking; and variable speed control may be achieved by means of a conventional electric scooter twist throttle handle 153 or thumb throttle, and control principles thereof both belong to conventional techniques in the prior art, which will not be repeated herein.

[0056] Further, in the present embodiment, a detent pin 154 is further disposed on the steering rod 152, and the detent pin 154 is configured to limit telescopic movement of the steering rod 152; and

[0057] specifically, a detent pin 154 is disposed on the steering rod 152, a detent hole 155 is formed on an inner tube of the steering rod 152, the detent pin 154 is adapted to the detent hole 155, and cooperation between the detent pin 154 and the detent hole 155 limits sliding of the steering rod 152.

[0058] Further, in the present embodiment, the direction control device 12 includes transmission rods 121; a plurality of transmission rods 121 are arranged, the plurality of transmission rods 121 are sequentially rotatably connected end to end, and head ends and tail ends of the connected transmission rods 121 are respectively rotatably connected to the corresponding wheels 11; and a swing arm 156 is further connected to the bottom of the drawbar assembly 15, an end of the swing arm 156 away from the drawbar assembly 15 is rotatably connected to the middle transmission rod 121, and when the drawbar assembly 15 rotates horizontally, the swing arm 156 is driven to swing, and the swing arm 156 drives the transmission rods 121 to move; and

[0059] specifically, in the present embodiment, the direction control device 12 includes transmission rods 121, a plurality of transmission rods 121 are arranged, the plurality of transmission rods 121 are sequentially rotatably connected end to end, and the transmission rods 121 are capable of rotating relative to each other; preferably, five transmission rods 121 are arranged, including four long transmission rods and one short transmission rod disposed exactly in the middle, such that the connected transmission rods 121 form a structure shaped like the Chinese character "A." after rotating relative to each other, to adapt to space formed after the collapsible wagon body 10 is folded; the connected transmission rods 121 form an integral structure, a front end and rear end of the integral structure are respectively rotatably connected to the corresponding wheels 11, a swing arm 156 is further disposed at the bottom of the second folding member 151, and the swing arm 156 is rotatably connected to the middle transmission rod 121; and when the second folding member 151 rotates horizontally relative to the strut adapter 16, the swing arm 156 is driven to swing left and right, and the swing arm 156 drives the transmission rods 121 to move left and right, which pushes the wheels 11 to rotate left and right and achieves steering control of the wheels 11, where a distance from the transmission rod 121 to a rotation center of the second folding member 151 needs to be equal to a distance from the transmission rod 121 to a rotation center of the wheels 11, such that no clearance groove needs to be formed on the swing arm 156 to ensure smooth rotation.

[0060] Steering angles of the wheels 11 follow an Ackermann steering principle, that is, steering angles of two wheels 11 during turning of the wheels 11 are different, which may be achieved by adjusting positions of connection between the transmission rods 121 and the wheels 11, thereby reducing wear of the wheels 11 and prolonging service life of the wheels 11; and under the Ackermann steering principle, both ends of the middle transmission rod 121 may interfere with the transmission rods 121 at both ends due to different torsional angles, thereby easily shortening service life; and to this end, the middle transmission rod 121 may be split into two halves with one end overlapping vertically, and the two halves rotate relative to each other, thereby preventing occurrence of this problem.

[0061] It should be noted that the transmission rods 121 may be electrically controlled by adding a motor device such as a servo motor to push the transmission rods 121 to move.

[0062] Further, in another embodiment, the direction control device 12 includes an angle sensor (not shown in the figures), the angle sensor is disposed on the drawbar assembly 15, the angle sensor is connected to the controller, and when the drawbar assembly 15 rotates horizontally, the angle sensor identifies a rotation direction and angle of the drawbar assembly 15; and

[0063] specifically, in the present embodiment, steering control is achieved by differential steering control, an angle sensor is mounted on the drawbar assembly 15, and the angle sensor is preferably an encoder and configured to detect a rotation angle and direction of the steering rod 152 and transmit detection data to the controller; after calculation, the controller controls two wheels 11 provided with hub motors to generate a rotational speed difference to change the orientation of the collapsible wagon body 10; and for example, when the steering rod 152 is turned right, the left wheel 11 rotates faster than the right wheel 11, and the collapsible wagon body 10 swings rightward, where in this mode, the wheels 11 at the other end are swivel casters to ensure smooth steering.

[0064] By arranging the reinforcing rod assemblies 13 on the collapsible wagon body 10, the movement of the two side frame assemblies 102 in a length direction and a transverse direction is limited in the present disclosure, improving the stability of the collapsible wagon body 10 when in use, and additionally, the reinforcing rod assemblies 13 also provide support points for placing the seat devices 14, such that a user can sit on and drive the electric wagon, thereby enhancing the comfort of using the electric wagon. Moreover, the seat devices 14 further limit the transverse movement of two side frame assemblies 102, thereby further enhancing the stability of the collapsible wagon body 10 and prolonging the service life of the collapsible wagon body 10.

[0065] The present disclosure is not limited merely to what is described in the specification and the embodiments, such that additional advantages and modifications can be readily achieved by those skilled in the art. Without departing from the spirit and scope of the general concept as defined by the claims and the equivalents, the present disclosure is not limited to the specific details, representative apparatus, and illustrative examples as shown and described herein.

Claims

1. A reinforcing structure of an electric collapsible wagon, comprising: a collapsible wagon body, wherein the collapsible wagon body comprises end frame assemblies, side frame assemblies, and a bottom frame assembly; two end frame assemblies are arranged, the two end frame assemblies are spaced apart from each other in a front-rear direction, two side frame assemblies are arranged, the two side frame assemblies are disposed between the two end frame assemblies, the two side frame assemblies are spaced apart from each other, front ends of the two side frame assemblies are respectively rotatably connected to the front end frame assembly, and both ends of each of the side frame assemblies are capable of folding toward a middle in a length direction; at least one bottom frame assembly is arranged, the bottom frame assembly is disposed between the two end frame assemblies and between the two side frame assemblies, both ends of the bottom frame assembly are respectively rotatably connected to the corresponding end frame assemblies, and the bottom frame assembly is capable of converging toward the middle; wheels are disposed at a bottom of the collapsible wagon body, the collapsible wagon body is further provided with a direction control device connected to the wheels for controlling steering of the wheels, reinforcing rod assemblies are respectively connected to two sides of a top of the front end frame assembly, the other end of each of the reinforcing rod assemblies is connected to the rear end frame assembly, and the reinforcing rod assemblies are detachably connected to the side frame assemblies; a seat device is detachably disposed between the two reinforcing rod assemblies; and a controller and a power supply are further disposed on the collapsible wagon body, the power supply is electrically connected to the controller, and the wheels at at least one end of the collapsible wagon body are connected to the controller.

2. The reinforcing structure of an electric collapsible wagon according to claim 1, wherein each of the end frame assemblies comprises a first X-shaped bracket and vertical support rods, two vertical support rods are arranged, a connecting seat is respectively disposed at a top end and a bottom end of each of the vertical support rods, and four ends of the first X-shaped bracket are respectively rotatably connected to the corresponding connecting seats; each of the side frame assemblies comprises a second X-shaped bracket, at least one second X-shaped bracket is provided, and the second X-shaped bracket is rotatably connected to the connecting seats on a same side of the two end frame assemblies.

3. The reinforcing structure of an electric collapsible wagon according to claim 1, wherein each of the reinforcing rod assemblies comprises a first reinforcing rod, a second reinforcing rod,and a connecting member; one end of the first reinforcing rod is rotatably connected to the front end frame assembly, one end of the second reinforcing rod is rotatably connected to the first reinforcing rod via the connecting member, the other end of the second reinforcing rod is rotatably connected to the rear end frame assembly, and the first reinforcing rod and the second reinforcing rod rotate relative to the connecting member respectively.

4. The reinforcing structure of an electric collapsible wagon according to claim 3, wherein a limiting structure is rotatably disposed on the connecting member, a limiting member is disposed on the side frame assembly at a position corresponding to the limiting structure, and the limiting structure cooperates with the limiting member to limit folding of the reinforcing rod assembly.

5. The reinforcing structure of an electric collapsible wagon according to claim 1, wherein the seat device has a rigid plate structure, and both ends of the seat device are respectively provided with snap grooves adapted to the reinforcing rod assemblies.

6. The reinforcing structure of an electric collapsible wagon according to claim 1, wherein an end of the collapsible wagon body is further connected to a drawbar assembly, a bottom of the drawbar assembly is rotatably connected to a strut adapter, one end of the strut adapter is rotatably connected to a first strut, and the other end of the strut adapter is connected to a second strut, wherein ends of the first strut and the second strut away from the strut adapter are respectively rotatably connected to the end frame assembly, the first strut and the second strut are capable of rotating vertically relative to the strut adapter and the end frame assembly respectively, and the drawbar assembly is capable of rotating horizontally relative to the strut adapter.

7. The reinforcing structure of an electric collapsible wagon according to claim 6, wherein footrest bars are further disposed on the first strut and the second strut or the end frame assembly.

8. The reinforcing structure of an electric collapsible wagon according to claim 6, wherein synchronizing teeth are respectively disposed at ends of the first strut and the second strut connected to the strut adapter, the two synchronizing teeth are meshed with each other, and a clearance hole is formed in a top wall of the strut adapter.

9. The reinforcing structure of an electric collapsible wagon according to claim 6, wherein the drawbar assembly comprises a first folding member and a steering rod, the first folding member is rotatably connected to the strut adapter, the first folding member is capable of rotating horizontally relative to the strut adapter, a bottom end of the steering rod is rotatably connected to the first folding member, the steering rod is capable of rotating vertically relative to the first folding member, and the front end frame assembly is further provided with a clamping deviceconfigured to limit rotation of the steering rod relative to the first folding member.

10. The reinforcing structure of an electric collapsible wagon according to claim 9, wherein the steering rod has a telescopic structure, a handle is disposed at a top end of the steering rod, a plurality of control buttons are arranged on the handle, and the control buttons are connected to the controller.

11. The reinforcing structure of an electric collapsible wagon according to claim 10, wherein a detent pin is further disposed on the steering rod, and the detent pin is configured to limit telescopic movement of the steering rod.

12. The reinforcing structure of an electric collapsible wagon according to claim 6, wherein the direction control device comprises transmission rods; a plurality of transmission rods are arranged, the plurality of transmission rods are sequentially rotatably connected end to end, and head ends and tail ends of the connected transmission rods are respectively rotatably connected to the corresponding wheels; and a swing arm is further connected to the bottom of the drawbar assembly, an end of the swing arm away from the drawbar assembly is rotatably connected to the middle transmission rod, and when the drawbar assembly rotates horizontally, the swing arm is driven to swing, and the swing arm drives the transmission rods to move.

13. The reinforcing structure of an electric collapsible wagon according to claim 6, wherein the direction control device comprises an angle sensor, the angle sensor is disposed on the drawbar assembly, the angle sensor is connected to the controller, and when the drawbar assembly rotates horizontally, the angle sensor identifies a rotation direction and angle of the drawbar assembly.

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