Mounting platform of collapsible wagon

Abstract

Disclosed in the present application is a mounting platform of a collapsible wagon, the mounting platform comprising: a collapsible wagon body, the collapsible wagon body being provided with a plurality of side support assemblies each consisting of two straight rods crossed in an X shape, and each pair of the straight rods respectively rotating at the crossed position. The bottom of one end of the collapsible wagon body is provided with first wheels, and the other end of the collapsible wagon body is provided with second wheels. The mounting platform is sleeved at a crossed position of the side support assemblies; the side support assemblies can rotate within a preset angle with respect to the mounting platform, while the mounting platform does not follow up; and a pull bar is connected to the end at which the first wheels are located. By using the design, arranging the mounting platform on the side support assemblies effectively increases the loading area of the wagon body; the provision of the mounting platform does not affect the strength of the wagon body but can improve the use strength of the wagon body; and the mounting platform does not rotate along with rotation of the side support assemblies, thus preventing inclination of hanging articles.

Description

Mounting platform for folding trailer Technical Field

[0001] The utility model relates to the technical field of foldable electric trailers, in particular to a mounting platform for a foldable trailer. Background Art

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

[0003] At present, the loading volume of existing folding trailers is limited, and since the angle needs to be considered when folding, the existing folding trailers cannot arbitrarily change the body structure to increase the loading volume. For this reason, engineers have designed a trailer with an openable folding body at the rear end. When the loading volume needs to be expanded, the bracket at the rear end of the folding body can be laid flat to increase the loading volume. However, this method loses the pulling of the brackets on both sides of the rear end of the body, and it is easy for the trailer to expand outward due to the squeezing of the cargo when fully loaded. However, since the deformation of the body is limited, this can easily cause the body bracket to bend and deform irreversibly under forced squeezing, affecting the subsequent use strength and stability of the body.

[0004] Therefore, it is urgent to design a mounting platform for a foldable trailer to overcome the above-mentioned deficiencies of one or more prior arts. Summary of the Invention

[0005] The technical solution adopted by the present invention to solve the above-mentioned technical problems is: a mounting platform for a folding trailer, characterized in that it includes: a folding body, the folding body is provided with a plurality of side bracket assemblies which are formed by two straight rods crossing in an "X" shape and the two straight rods rotate at the intersection respectively, the plurality of side bracket assemblies enclose a frame with upper and lower openings, the middle bottom surface of the frame is also provided with a bottom bracket, and the folding body is a gathered type body; a first wheel is provided at the bottom of one end of the folding body, and a second wheel is provided at the other end of the folding body, a mounting platform is sleeved at the intersection of the side bracket assemblies, the side bracket assembly can rotate within a predetermined angle relative to the mounting platform and the mounting platform does not move with it, and the mounting platform at the end where the first wheel is located is connected to a pull rod.

[0006] In a preferred embodiment, the mounting platform includes: an outer cover and a mounting seat, and the two opposite sides of the mounting seat are provided with avoidance grooves for the straight rod to rotate within a predetermined angle. The outer cover is detachably provided on the two sides of the mounting seat with the avoidance grooves, and the middle parts of the two outer covers are detachably connected to the middle parts of the corresponding straight rods.

[0007] In a preferred embodiment, a mounting groove is provided in the middle of the mounting seat, a support rod is provided in the mounting groove, one end of the support rod passes through the mounting seat, and a sliding groove is provided at the end of the support rod passing through the mounting seat.

[0008] In a preferred embodiment, the two straight rods are located in the mounting platform and are respectively rotatably provided with connecting rods, and the two connecting rods are connected together by a pin at one end away from the connection with the straight rod, and the pin is located in the slide groove and slides with the slide groove.

[0009] In a preferred embodiment, the two opposite sides of the mounting seat are respectively provided with a limit block integrally formed with the mounting seat, and the limit blocks on both sides are diagonally arranged, and the side of the mounting seat provided with the limit block can also be removably provided with a pressure block, and the pressure block and the corresponding limit block are diagonally arranged, and the interval between the pressure block and the corresponding limit block forms the avoidance groove, and the two sides of the mounting seat are also respectively provided with a placement groove, and a rack is respectively slidably provided in the placement groove, and the pressure block is pressed on one end of the corresponding rack, and each rack is provided with a vertical part at the end away from the pressure block, and the vertical part is provided with a moving groove, and each straight rod is connected to a moving shaft that slides with the moving groove. When the two straight rods rotate, the moving shaft slides in the moving groove and pushes the rack to slide in the placement groove.

[0010] In a preferred embodiment, the mounting seat is further provided with a synchronous tooth meshing with the rack, and the two ends of the synchronous tooth are respectively located in the placement grooves on both sides, and the positions of the two racks relative to the synchronous tooth are one above and one below.

[0011] The beneficial effects of the present invention are as follows: the present invention effectively increases the bearing area of ​​the vehicle body by arranging a mounting platform on the side bracket assembly. The arrangement of the mounting platform will not affect the strength of the vehicle body, but can improve the use strength of the vehicle body. The mounting platform will not rotate with the rotation of the side bracket, thereby avoiding tilting of the hung items. The utility model has better practicality, simple structure, low cost, and effectively improves product competitiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic structural diagram of the present invention;

[0013] Figure 2 is a rear view of the utility model;

[0014] FIG3 is a schematic structural diagram of a first embodiment of the mounting platform of the present invention;

[0015] FIG4 is a schematic structural diagram of a second embodiment of the mounting platform of the present invention;

[0016] FIG5 is a diagram of the utility model in a folded state.

[0017] In the picture:

[0018] 10. Folding vehicle body; 11. Side stand assembly; 111. Straight rod; 112. Connecting rod; 113. Pin; 114. Motion axis; 12. First wheel; 13. Second wheel;

[0019] 20. Pull rod;

[0020] 30. Mounting platform; 31. Outer cover; 32. Mounting seat; 33. Avoidance groove; 34. Mounting groove; 35. Support rod; 36. Slide groove; 37. Limit block; 38. Press block; 39. Placement groove; 40. Rack; 41. Vertical part; 42. Moving groove; 43. Synchronous gear; 44. Connecting hole. DETAILED DESCRIPTION

[0021] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the following detailed description of specific embodiments of the present invention is provided in conjunction with the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0022] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms, "connection", and "installation" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. In addition, "communication" can be a direct connection or an indirect connection through an intermediate medium. Here, "fixed" means that the two are connected to each other and the relative position relationship after connection remains unchanged. The directional terms mentioned in the embodiments of the present invention, such as "inside", "outside", "top", "bottom", etc., are only reference to the directions of the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0023] In the embodiments of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include one or more of the features.

[0024] In the embodiments of the present invention, "and / or" is simply a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0025] References to "one embodiment" or "some embodiments" in this specification mean that one or more embodiments of the present invention include a particular feature, structure or characteristic described in conjunction with that embodiment. Thus, phrases such as "in one embodiment," "in some embodiments," "in other embodiments," and "in other embodiments" that appear in different places in this specification do not necessarily refer to the same embodiment, but rather mean "one or more but not all embodiments," unless otherwise specifically emphasized. The terms "comprise," "include," "have," and their variations all mean "including but not limited to," unless otherwise specifically emphasized. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0026] As shown in Figures 1 to 5, the present invention provides a mounting platform for a foldable trailer, comprising: a foldable body 10, wherein the foldable body 10 is provided with a plurality of side bracket assemblies 11 formed by two straight rods 111 crossing in an "X" shape and the two straight rods 111 are rotated at the intersection, the plurality of side bracket assemblies 11 form a frame with upper and lower openings, and a bottom bracket is further provided on the middle bottom surface of the frame, the foldable body 10 is a gathered body; a first wheel 12 is provided at the bottom of one end of the foldable body 10, and a second wheel 13 is provided at the other end of the foldable body 10, and a mounting platform 30 is sleeved at the intersection of the side bracket assemblies 11, the side bracket assembly 11 can rotate within a predetermined angle relative to the mounting platform 30 and the mounting platform 30 does not move with it, and the mounting platform at the end where the first wheel 12 and / or the second wheel 13 are located is connected to a pull rod 20,

[0027] Specifically, the folding body 10 can be a folding body or a gathering body. The folding body is folded from the front and back to the middle, and the gathering body is gathered from the front and back, left and right to the middle. The folding body 10 is provided with a plurality of side bracket assemblies 11 formed by two straight rods 111 crossing in an "X" shape. The plurality of side bracket assemblies 11 are enclosed to form a rectangular frame with upper and lower openings, and a foldable bottom bracket is provided on the bottom surface of the middle of the frame. The intersection of the two straight rods 111 is connected by bolts so that the two straight rods 111 can be rotated to expand or fold at the intersection respectively. When folded, the bottom bracket arches upward, and the front, rear, left and right side bracket assemblies 11 extend from four directions to the middle. When gathered and folded, a mounting platform 30 is provided at the intersection of the two straight rods 111. The mounting platform 30 is used to hang items, such as hanging baskets, etc. The two straight rods 111 can rotate relative to the mounting platform 30 respectively, but the mounting platform 30 will not rotate with the rotation of the straight rods 111. The mounting platform 30 always maintains a vertical posture on the side bracket assembly 11, so that the items hung on the mounting platform 30 will not tilt or fall. A first wheel 12 is provided at the bottom of one end of the folding body 10, and a second wheel 13 is provided at the bottom of the other end. There are two first wheels 12 and two second wheels 13 respectively. The mounting platform 30 arranged at the end where the first wheel 12 is located is connected to the pull rod 20.

[0028] It should be noted that, in addition to being used for hanging items such as a hanging basket, the mounting platform 30 can also be used to connect a steering rod, and if it is an electric-powered trailer, it can be used to hang a controller and a power supply.

[0029] Furthermore, the mounting platform 30 includes: an outer cover 31, a mounting base 32, and the mounting base 32 has two opposite sides provided with a relief groove 33 for the straight rod 111 to rotate within a predetermined angle. The outer cover 31 is detachably mounted on both sides of the mounting base 32 provided with the relief groove 33, and the middle portions of the two outer covers 31 are detachably connected to the middle portions of the corresponding straight rods 111.

[0030] Specifically, each mounting platform 30 includes two outer covers 31 and a mounting seat 32. The mounting seat 32 is arranged between the two straight rods 111 and at the intersection of the two straight rods 111. A recessed avoidance groove 33 is provided on the two opposite sides of the mounting seat 32. The straight rod 111 is located in the avoidance groove 33. The function of the avoidance groove 33 is to enable the straight rod 111 to rotate on the mounting seat 32 to avoid affecting the folding of the vehicle body. The outer cover 31 is arranged on both sides of the mounting seat 32, and the straight rod 111 is covered in the mounting seat 32. The middle of the outer cover 31 is connected to the middle of the corresponding straight rod 111 by screws. The two outer covers 31 are also fixedly connected to the mounting seat 32, and two connecting holes 44 are reserved on both sides of the outer cover 31 for connecting items such as hanging baskets.

[0031] Furthermore, a mounting groove 34 is provided in the middle of the mounting seat 32, a support rod 35 is provided in the mounting groove 34, one end of the support rod 35 passes through the mounting seat 32, and a sliding groove 36 is provided at the end of the support rod 35 passing through the mounting seat 32;

[0032] Specifically, in order to prevent the mounting seat 32 from rotating when the straight rod 111 rotates, a mounting groove 34 is provided in the middle of the mounting seat 32, and a support rod 35 is provided in the mounting groove 34. The support rod 35 is adapted to the mounting groove 34. One end of the support rod 35 extends out of the mounting seat 32, and a slide groove 36 is provided on the end extending out of the mounting seat 32. The other end of the support rod 35 can be fixedly connected to the mounting seat 32 or connected to the intersection of the two straight rods 111. It should be pointed out that the support rod 35 must be vertical. Only in the vertical shape can the mounting platform 30 always be in a vertical state.

[0033] Furthermore, the two straight rods 111 are respectively rotatably provided with connecting rods 112 at their positions within the mounting platform 30. The ends of the two connecting rods 112 away from the ends connected to the straight rods 111 are connected together by a pin 113. The pin 113 is located in the slide groove 36 and slidably cooperates with the slide groove 36.

[0034] Specifically, the two straight rods 111 are located within the range of the mounting platform 30 and are respectively rotatably provided with a connecting rod 112. The ends of the connecting rod 112 away from the straight rod 111 are connected together by a pin 113, and the pin 113 slides in the slide groove 36. The two connecting rods 112 are of equal length. When the straight rod 111 rotates, it will push the connecting rod 112 to move. At this time, since the ends of the two connecting rods 112 are connected together by the pin 113, and the pin 113 can slide in the slide groove 36, the rotation of the straight rod 111 will push the pin 113 to slide in the slide groove 36. At the same time, since the lengths of the two connecting rods 112 are equal and the rotation of the two straight rods 111 is synchronous, the forces are also equal. Therefore, at this time, the pin 113 will limit the support rod 35 to be in a vertical state, and the vertical state of the support rod 35 will limit the mounting seat 32 to be in a vertical state, so that the items connected to the mounting platform 30 are always in a vertical state.

[0035] The second embodiment is different from the first embodiment in that the two opposite sides of the mounting seat 32 are respectively provided with a limit block 37 integrally formed with the mounting seat 32, and the side of the mounting seat 32 provided with the limit block 37 can also be detachably provided with a pressure block 38, the pressure block 38 and the corresponding limit block 37 are arranged diagonally, and the interval between the pressure block 38 and the corresponding limit block 37 forms the avoidance groove 33, and the two sides of the mounting seat 32 are further provided with a placement groove 39, and a rack 40 is slidably provided in the placement groove 39, and the pressure block 38 presses on one end of the corresponding rack 40, and each rack 40 is provided with a vertical portion 41 at the end away from the pressure block 38, and the vertical portion 41 is provided with a motion groove 42, and each straight rod 111 is connected to a motion shaft 114 that slidably cooperates with the motion groove 42. When the two straight rods 111 rotate, the motion shaft 114 slides in the motion groove 42 and pushes the rack 40 to slide in the placement groove 39;

[0036] Specifically, limit blocks 37 integrally formed with the mounting seat 32 are respectively provided on the two opposite sides of the mounting seat 32, and the two limit blocks 37 are arranged diagonally. A pressure block 38 is detachably provided on each side of the mounting seat 32 with the limit blocks 37 by means of fasteners such as screws. Each pressure block 38 is arranged diagonally with the corresponding limit block 37, and the spacing distance between the pressure block 38 and the limit block 37 forms an avoidance groove 33. A placement groove 39 is also respectively provided on each side of the mounting seat 32 with the limit blocks 37. The placement groove 39 is located on the bottom side of the mounting seat 32, and a rack 40 is placed in each placement groove 39. The rack 40 can slide in the placement groove 39. When the pressure block 38 is fixed to the mounting seat 32, one end of the rack 40 is pressed together in the placement groove 39 to prevent the rack 40 from falling off. The rack 40 is provided with an upright portion 41 at one end away from the pressing block 38. The upright portion 41 and the rack 40 form an "L" shape. A motion groove 42 is provided on the upright portion 41. At the same time, each straight rod 111 is provided with a motion shaft 114 that slides with the motion groove 42. When the straight rod 111 rotates, the motion shaft 114 pushes the rack 40 to slide. At the same time, the motion shaft 114 slides along the motion groove 42, thereby realizing the translation of the rack 40, thereby avoiding the motion conflict between the straight rod 111 and the rack 40, and the end of the placement slot 39 that is pressed by the pressing block 38 is adapted to the rack 40. Therefore, the rack 40 cannot make other displacements except translation, and the mounting seat 32 cannot rotate under the restriction of the rack 40, so it will always be in a vertical state.

[0037] Furthermore, in the second embodiment, the mounting seat 32 is further provided with a synchronous tooth 43 meshing with the rack 40 , and both ends of the synchronous tooth 43 are respectively located in the placement grooves 39 on both sides, and the two racks 40 are positioned one above and one below relative to the synchronous tooth 43 ;

[0038] Specifically, in order to ensure the synchronous movement of the two racks 40 and promote the synchronous movement of the two straight rods 111, synchronous teeth 43 are respectively provided on both sides of the mounting base 32. The two synchronous teeth 43 are detachably connected together for easy installation, and the two synchronous teeth 43 move synchronously. Each synchronous tooth 43 is engaged with the corresponding rack 40. When one of the racks 40 moves, it drives the synchronous teeth 43 to move synchronously. Since the movement directions of the two straight rods 111 are opposite, the movement directions of the two racks 40 are opposite. To avoid movement conflicts, the positional relationship of the two racks 40 relative to the synchronous teeth 43 is that one rack 40 is located below the synchronous teeth 43, and the other rack 40 is located above the synchronous teeth 43. The two racks 40 move in opposite directions, that is, when one moves to the left, the other moves to the right, thereby avoiding movement conflicts.

[0039] To sum up, the utility model effectively increases the load-bearing area of ​​the vehicle body by arranging a mounting platform on the side bracket assembly. The setting of the mounting platform will not affect the strength of the vehicle body, but can improve the use strength of the vehicle body. The mounting platform will not rotate with the rotation of the side bracket, thereby avoiding the tilting of the hung items. It is more practical, simple in structure, low in cost, and effectively improves product competitiveness.

[0040] The present invention is not limited to what is described in the specification and implementation modes, and therefore additional advantages and modifications can be easily realized by those skilled in the art. Therefore, without departing from the spirit and scope of the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details, representative devices, and illustrated examples shown and described herein.

Claims

1. A mounting platform for a folding trailer, characterized in that: include: A folding vehicle body, wherein the folding vehicle body is provided with a plurality of side bracket assemblies which are formed by two straight rods crossing in an "X" shape and the two straight rods rotate at the intersection respectively, the plurality of side bracket assemblies enclose a frame which is opened at the top and the bottom, and a bottom bracket is also provided on the middle bottom surface of the frame, and the folding vehicle body is a gathered type vehicle body; a first wheel is provided at the bottom of one end of the folding vehicle body, and a second wheel is provided at the other end of the folding vehicle body, and a mounting platform is sleeved at the intersection of the side bracket assemblies, the side bracket assemblies can rotate within a predetermined angle relative to the mounting platform and the mounting platform does not move with it, and the mounting platform at the end where the first wheel is located is connected to a pull rod.

2. The mounting platform of the folding trailer according to claim 1, characterized in that: The mounting platform includes: an outer cover and a mounting seat. The two opposite sides of the mounting seat are provided with avoidance grooves for the straight rod to rotate within a predetermined angle. The outer cover is detachably arranged on the two sides of the mounting seat with the avoidance grooves, and the middle parts of the two outer covers are detachably connected to the middle parts of the corresponding straight rods.

3. The mounting platform of the folding trailer according to claim 2, characterized in that: A mounting groove is arranged in the middle of the mounting seat, a support rod is arranged in the mounting groove, one end of the support rod passes through the mounting seat, and a sliding groove is arranged at one end of the support rod passing through the mounting seat.

4. The mounting platform of the folding trailer according to claim 3, characterized in that: The two straight rods are located in the mounting platform and are rotatably provided with connecting rods respectively. The two connecting rods are connected together through a pin shaft at one end away from the straight rods. The pin shaft is located in the slide groove and slidably cooperates with the slide groove.

5. The mounting platform of the folding trailer according to claim 2, characterized in that: The two opposite sides of the mounting seat are respectively provided with a limit block integrally formed with the mounting seat, and the side of the mounting seat provided with the limit block can also be detachably provided with a pressure block, the pressure block and the corresponding limit block are diagonally arranged, and the interval between the pressure block and the corresponding limit block forms the avoidance groove, and the two sides of the mounting seat are also respectively provided with placement grooves, and racks are respectively slidably provided in the placement grooves, and the pressure block is pressed on one end of the corresponding rack, and each of the racks is provided with a vertical part at the end away from the pressure block, and the vertical part is provided with a moving groove, and each of the straight rods is connected to a moving shaft that slidably cooperates with the moving groove, and when the two straight rods rotate, the moving shaft slides in the moving groove and pushes the rack to slide in the placement groove.

6. The mounting platform of the folding trailer according to claim 5, characterized in that: The mounting seat is also provided with a synchronous tooth meshing with the rack, and the two ends of the synchronous tooth are respectively located in the placement grooves on the two sides, and the positions of the two racks relative to the synchronous tooth are one above and one below.

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