Folding trolley

Abstract

The utility model relates to a folding trolley which comprises an upper frame (1) and a lower frame (2). A support bar (3) connected to the upper frame (1) and the lower frame (2); the telescopic support (4) is connected to the upper frame (1) and the lower frame (2), the folding trolley has a using state and a folding state, in the using state, the supporting rods (3) support the upper frame (1), the telescopic support (4) is unfolded, the upper frame (1) is far away from the lower frame (2), and in the folding state, the upper frame (1) is separated from the supporting of the supporting rods (3), the telescopic support (4) is compressed, and the upper frame (1) is close to the lower frame (2). The folding trolley is supported through the telescopic supports and the supporting rods, and the stability of the folding trolley in the using state can be enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of storage trolley, specifically relates to a folding trolley. BACKGROUND

[0002] In the existing folding trolley, one is supported by four columns in the use state, and the folding mechanism arranged at the central part of the four columns is bent by 180 degrees when folding, so that the trolley is folded. Since the trolley is only supported by four columns in the use state, and the folding mechanism is arranged at the central part of the column, the stability of the trolley in the use state is low.

[0003] Another folding trolley is also supported by four columns in the use state, and the cross arranged rotating rod arranged in the bottom frame and / or side frame is rotated when folding, so that the trolley is folded. Since it is also only supported by four columns in the use state, and the rotating rod is easily triggered by mistake in the use state, the stability of the trolley in the use state is low. SUMMARY

[0004] The utility model is completed in view of the problems of the prior art, and the main purpose of the utility model is to provide a folding trolley, which has stronger stability in the use state.

[0005] As a technical scheme for solving the above technical problems, the utility model provides a folding trolley, which comprises: an upper frame and a lower frame; a support rod connected to the upper frame and the lower frame; and a telescopic support connected to the upper frame and the lower frame; the folding trolley has a use state and a folding state, in the use state, the support rod supports the upper frame, the telescopic support is unfolded, the upper frame is away from the lower frame, in the folding state, the upper frame is away from the support of the support rod, the telescopic support is compressed, and the upper frame is close to the lower frame.

[0006] Through the telescopic support connected to the upper frame and the lower frame on both sides, and the support rod connected to the upper frame and the lower frame on both sides, the folding trolley can be supported in two ways, so as to enhance the stability of the folding trolley in the use state.

[0007] In one possible implementation, in the folding state, the support rod is arranged horizontally or folded, the upper frame and the lower frame are in abutment, and / or in the use state, the support rod is arranged vertically.

[0008] By arranging the support rod horizontally / vertically or folding, the use state and the folding state of the folding trolley can be switched, which is easy to operate.

[0009] In a possible implementation, the end of the support rod is movably connected with the upper frame and / or the lower frame.

[0010] With the above arrangement, the switching between the use state and the folded state of the folding trolley is achieved while the structure is simplified. In particular, by movably connecting the end of the support rod with two of the upper frame and the lower frame, the possibility of switching between the use state and the folded state of the folding trolley is increased, and the user can easily perform the switching operation between the use state and the folded state.

[0011] In a possible implementation, the end of the support rod is movably connected with the upper frame and / or the lower frame.

[0012] By sliding the upper end of the support rod relative to the upper frame, the upper frame and the lower frame can be moved closer to each other without folding the support rod, the strength of the support rod is improved, and thus the stability of the folding trolley in the use state is improved. With the above arrangement, the switching between the use state and the folded state of the folding trolley can be achieved in an easy-to-operate manner.

[0013] In a possible implementation, the upper frame is provided with a first sliding groove, and the upper end of the support rod is movably connected in the first sliding groove.

[0014] The first sliding groove defines the sliding track of the upper end of the support rod, so that the support rod moves smoothly and is easy to operate by the user, and thus the folding trolley can be easily switched from the use state to the folded state.

[0015] In a possible implementation, one end of the first sliding groove is provided with a stop groove in communication with the first sliding groove, the extension direction of the stop groove is different from that of the first sliding groove, and in the use state, the upper end of the support rod is located in the stop groove.

[0016] By providing the stop groove with an extension direction different from that of the first sliding groove, when the support rod needs to support the upper frame, the end of the support rod can be slid from the first sliding groove into the stop groove and clamped in the stop groove, preventing the support rod from moving in the first sliding groove when the folding trolley is unfolded, so that the support rod cannot support the upper frame, and the stability of the folding trolley in the use state is improved.

[0017] In a possible implementation, the end of the first sliding groove close to the stop groove is provided with a limiting protrusion protruding towards the first sliding groove.

[0018] By providing the limiting protrusion, the support rod can be prevented from sliding from the stop groove into the first sliding groove when the folding trolley is unfolded, so that the support is not stable, and the stability of the folding trolley in the use state is improved.

[0019] In a possible implementation, the support rod and the telescopic support are located on different sides of the folding trolley.

[0020] By the above arrangement, the support rod and the telescopic support can support the folding trolley on two different sides, thereby improving the stability of the folding trolley in the use state.

[0021] In a possible implementation, the folding trolley has a first side and a second side, the length of the first side is less than the length of the second side, the support rod is located on the first side, and the telescopic support is located on the second side.

[0022] By making the length of the first side less than the length of the second side, the arrangement space of the telescopic support can be increased, and the stability of the folding trolley in the use state is enhanced.

[0023] In a possible implementation, the telescopic support includes: a first connecting rod, an upper end of the first connecting rod being rotationally connected to the upper frame, and a lower end of the first connecting rod being rotationally connected to the lower frame; and a second connecting rod, an upper end of the second connecting rod being rotationally connected to the upper frame, and a lower end of the second connecting rod being rotationally connected to the lower frame, the second connecting rod being rotationally connected to the first connecting rod.

[0024] By the above arrangement, the first connecting rod and the second connecting rod are not only respectively connected to the upper frame and the lower frame, but also connected to each other, so that the strength of the telescopic support can be improved, thereby improving the stability of the folding trolley. The first connecting rod, the second connecting rod, and the upper and lower frames are respectively rotationally connected, so that the telescopic support can be expanded and compressed by rotation, thereby supporting or not supporting the upper frame.

[0025] In a possible implementation, the upper frame and the lower frame respectively have a first side edge beam extending along a first horizontal direction and a second side edge beam extending along a second horizontal direction, the first side edge beam and the second side edge beam being movably connected.

[0026] By the above arrangement, the folding of the upper frame and the lower frame in the horizontal direction can be realized by the movably connected first side edge beam and second side edge beam, thereby further reducing the size of the folding trolley in the folded state.

[0027] In a possible implementation, the first side edge beam includes a first half beam and a second half beam, one end of the first half beam being rotationally connected to the second half beam, the other end of the first half beam being rotationally connected to the second side edge beam, and the second half beam being rotationally connected to the second side edge beam.

[0028] By rotationally connecting the first half beam and the second half beam, the upper frame and the lower frame can be further folded by rotation in the horizontal plane, thereby further reducing the occupied space of the folding trolley after folding.

[0029] In a possible implementation, the folding trolley further comprises a wheel assembly detachably connected to the lower frame.

[0030] By detachably connecting the wheel assembly to the lower frame, the folding trolley can be applied to a scenario without the wheel and is convenient to store in the folded state.

[0031] In a possible implementation, the wheel assembly comprises a wheel and a wheel mounting portion connected to the wheel, and the wheel mounting portion is connected to the lower frame by magnetic attraction.

[0032] By magnetic attraction, the wheel assembly is convenient to detach from and mount to the lower frame, and the stability of the connection between the wheel assembly and the lower frame is enhanced.

[0033] In a possible implementation, the wheel assembly comprises a wheel and a wheel mounting portion connected to the wheel, and the lower frame has a mounting recess, the wheel mounting portion is provided with a mounting protrusion matched with the mounting recess, or the lower frame has a mounting protrusion, and the wheel mounting portion is provided with a mounting recess matched with the mounting protrusion.

[0034] By matching the mounting recess and the mounting protrusion or matching the mounting recess and the mounting protrusion, the wheel assembly and the lower frame can be positioned relative to each other, the wheel assembly is convenient to mount and detach, the folding trolley can be applied to a scenario without the wheel and is convenient to store in the folded state, the mounting recess is arranged on the lower frame, and the folding trolley is kept flat at the bottom when the wheel assembly is not mounted, so that the bottom of the folding trolley is in close contact with the ground. In addition, the mounting protrusion is arranged on the lower frame, and the bottom of the folding trolley is kept at a distance from the ground when the wheel assembly is not mounted, so that the bottom of the folding trolley is prevented from being scratched or dirty by the ground.

[0035] In a possible implementation, the folding trolley further comprises a handle assembly connected to the upper frame or the lower frame.

[0036] By arranging the handle assembly, the folding trolley is convenient to move in the use state.

[0037] In a possible implementation, the handle assembly comprises a handle portion and a rope, one end of the rope is connected to the handle portion, and the other end of the rope is connected to the lower frame.

[0038] The flexibility of the rope can facilitate the storage of the folding trolley in the folded state.

[0039] In a possible implementation, the upper frame is provided with a carrying handle portion.

[0040] With the addition of a handle, users can easily lift the folding trolley, making it convenient for transporting and storing. Attached Figure Description

[0041] Figure 1 A perspective view of a folding handcart provided in one embodiment of the present utility model;

[0042] Figure 2 An exploded view of a folding handcart provided in one embodiment of the present invention;

[0043] Figure 3 A perspective view of a folding handcart (lacking wheel assembly) provided in one embodiment of the present invention;

[0044] Figure 4 for Figure 3 The image shown is a perspective view of the folding trolley with the first side folded.

[0045] Figure 5 for Figure 3 A perspective view of the first side and support rod of the folding trolley shown in the folded state;

[0046] Figure 6 for Figure 3 A top view of the folding handcart shown;

[0047] Figure 7 A perspective view showing the lower frame and wheel assembly assembled together;

[0048] Figure 8 This is a schematic diagram of the assembly of the lower frame and wheel assembly;

[0049] Figure 9 This is an enlarged view of the first sliding groove;

[0050] Figure 10 This is a schematic diagram of the assembly of the first sliding groove and the support rod. Detailed Implementation

[0051] In some embodiments, such as Figures 1-3 As shown, the folding handcart provided in this embodiment of the present invention includes: an upper frame 1 and a lower frame 2; a support rod 3 connected to the upper frame 1 and the lower frame 2; and a telescopic bracket 4 connected to the upper frame 1 and the lower frame 2; the folding handcart has a use state and a folded state, as shown. Figure 1 As shown, in use, support rod 3 supports upper frame 1, telescopic bracket 4 is extended, and upper frame 1 moves away from lower frame 2, as... Figure 5As shown, in the folded state, the upper frame 1 is detached from the support of the support rod 3, the telescopic support 4 is compressed, and the upper frame 1 is close to the lower frame 2. For example, the support rod 3 can be connected to the upper frame 1 and the lower frame 2 in one or more of the following ways: rotation, sliding, and detachable. The telescopic support 4 can be connected to the upper frame 1 and the lower frame 2 in one or more of the following ways: rotation, sliding, and detachable.

[0052] By means of the telescopic support 4 connected to both the upper frame 1 and the lower frame 2, and the support rod 3 connected to both the upper frame 1 and the lower frame 2, the folding cart can be supported in two ways, thereby enhancing the stability of the folding cart in the use state.

[0053] In some embodiments, as shown, Figure 5 As shown, in the folded state, the support rod 3 is arranged horizontally or folded, the upper frame 1 abuts against the lower frame 2, and / or in the use state, the support rod 3 is arranged vertically. The horizontal arrangement means that the support rod 3 is switched from the vertical state to the horizontal state, and the folded arrangement means that the support rod 3 is folded and stored.

[0054] With the above structure, the switching between the use state and the folded state of the folding cart can be achieved in an easy-to-operate manner.

[0055] In some embodiments, as shown, Figures 1-3 As shown, the end of the support rod 3 is movably connected to the upper frame 1 and / or the lower frame 2. For example, the end of the support rod 3 can be rotatably connected, slidably connected, or detachably connected to the upper frame 1 and / or the lower frame 2.

[0056] With the above structure, by movably connecting the end of the support rod 3 to the upper frame 1 or the lower frame 2, the structure of the folding cart is simplified, and the switching between the use state and the folded state of the folding cart can be achieved; in particular, by movably connecting the end of the support rod 3 to both the upper frame 1 and the lower frame 2, the possibility of achieving the switching between the use state and the folded state of the folding cart can be increased, and the user can easily achieve the switching operation between the use state and the folded state.

[0057] In some embodiments, as shown, Figures 1-3 As shown, the end of the support rod 3 is slidably connected to the upper frame 1. For example, the sliding connection between the upper frame 1 and the end of the support rod 3 can be achieved by means of a sliding groove and a sliding block sliding in the sliding groove, a sliding rail connection, or the like.

[0058] The upper frame 1 and the lower frame 2 can be brought close to each other by sliding the upper end of the support rod 3 relative to the upper frame 1, without having to fold the support rod 3, which improves the strength of the support rod 3 and thus the stability of the folding trolley in the use state. In addition, the use state and the folded state of the folding trolley can be switched in an easy-to-operate manner by using the above structure.

[0059] In some embodiments, as shown in Figures 9-10 The upper frame 1 is provided with a first sliding groove 13, and the upper end of the support rod 3 is slidingly connected in the first sliding groove 13. The first sliding groove 13 can be a through groove passing through the upper frame 1, or a non-through groove provided on the upper frame 1.

[0060] The first sliding groove 13 defines the sliding track of the upper end of the support rod 3, so that it moves smoothly and is easy to operate by the user, so that the folding trolley can be easily switched from the use state to the folded state.

[0061] In some embodiments, as shown in Figures 1-3 The upper frame 1 and the lower frame 2 each have a first side beam 11, 21 extending in a first horizontal direction and a second side beam 12, 22 extending in a second horizontal direction. The first side beam 11, 21 includes a first half beam 111, 211 and a second half beam 112, 212, one end of the first half beam 111, 211 is rotatably connected with the second half beam 112, 212, the other end of the first half beam 111, 211 is rotatably connected with the second side beam 12, 22, and the second half beam 112, 212 is rotatably connected with the second side beam 12, 22.

[0062] In other embodiments, the first sliding groove 13 can also be provided on the second half beam 212 of the lower frame 2. Alternatively, the first sliding groove 13 can be provided on the upper frame 1 and the lower frame 2 respectively; specifically, the first sliding groove 13 can be provided on the first half beam 111, 211 and the second half beam 112, 212 of the upper frame 1 and the lower frame 2 respectively.

[0063] In some embodiments, as shown in Figure 9 One end of the first sliding groove 13 is provided with a stop groove 14 communicating with the first sliding groove 13, the extension direction of the stop groove 14 is different from the extension direction of the first sliding groove 13, and in the use state, the upper end of the support rod 3 is located in the stop groove 14.

[0064] By adopting the above structure and setting a stop groove 14 with a different extension direction from the first sliding groove 13, when the support rod 3 needs to support the upper frame 1, the end of the support rod 3 is locked in the stop groove 14, thereby preventing the support rod 3 from moving in the first sliding groove 13 when the folding trolley is unfolded, which would cause the support rod 3 to fail to support the upper frame 1, thus enhancing the stability of the folding trolley in use.

[0065] In some embodiments, the stop groove 14 may extend from the end of the first sliding groove 13 to the upper left. Alternatively, the stop groove 14 may extend from the end of the first sliding groove 13 to the upper right. The angle between the extending direction of the stop groove 14 and the extending direction of the first sliding groove 13 may be between 1 degree and 179 degrees. The end of the stop groove 14 may be arc-shaped, straight, or any other shape.

[0066] In other embodiments, the stop groove 14 may be omitted, or the relative position of the upper end of the support rod 3 and the first sliding groove 13 may be locked by other locking structures. For example, a stop member that can block the movement of the upper end of the support rod 3 may be provided on the upper frame 1, and the upper end of the support rod 3 may be locked by the stop member.

[0067] In some embodiments, the sliding connection between the support rod 3 and the first side beam 11 can be achieved by the sliding engagement of the first sliding groove 13 and the sliding member. As a variation, the first sliding groove 13 can also have the following structure: the first sliding groove 13 is located vertically in its length direction... Figure 1 The edges in the Z direction have vertical directions ( Figure 1 The sliding recess (in the Z direction) is recessed. By inserting the sliding part 31 into the sliding recess, the sliding part 31 is slidably engaged with the first sliding groove 13, thereby slidably connecting the support rod 3 to the first side beam 11.

[0068] As another variation of the sliding connection between the support rod 3 and the first side beam 11, the first sliding groove 13 can be replaced with a slide rail, and the sliding element can be replaced with a slider that cooperates with the slide rail. That is, the first half beam 111 and the second half beam 112 of the first side beam 11 of the upper frame 1 are respectively formed with slide rails (not shown in the figure). By making the slider cooperate with the slide rail, the sliding connection between the support rod 3 and the first side beam 11 is achieved.

[0069] In some embodiments, such as Figure 9 As shown, the first sliding groove 13 has a limiting protrusion 15 at one end near the stop groove 14, and the limiting protrusion 15 protrudes towards the first sliding groove 13. The limiting protrusion can be arc-shaped, rectangular, triangular, or trapezoidal.

[0070] With the above structure, when the folding trolley is unfolded, the situation that the support rod 3 is not stably supported on the upper frame 1 due to the sliding of the support rod 3 from the stop groove 14 into the first sliding groove 13 can be prevented, thereby enhancing the stability of the folding trolley in the use state.

[0071] In some embodiments, the limiting protrusion 15 can also extend from the corner where the first sliding groove 13 and the stop groove 14 are connected to the stop groove 14. The extending shape of the limiting protrusion 15 is not limited, which can be semicircular, arc-shaped, rectangular, triangular, or trapezoidal. The arc-shaped or semicircular limiting protrusion 15 is convenient to process while preventing the support rod 3 from sliding from the stop groove 14 into the first sliding groove 13, and the arc-shaped or semicircular limiting protrusion 15 can also prevent the user from being cut due to its smooth surface.

[0072] In some embodiments, the stop groove 14 and the limiting protrusion 15 can not exist at the same time, and only the stop groove 14 or the limiting protrusion 15 can be provided. The stop groove 14 and the limiting protrusion 15 are provided in the alternative manner, which is convenient to process and reduces the complexity of the structure.

[0073] As another embodiment of the connection of the support rod 3 with the upper frame 1 and / or the lower frame 2, the first sliding groove 13 can not be provided. Specifically, one end of the support rod 3 can be rotatably connected with one of the upper frame 1 and the lower frame 2, and the other end of the support rod 3 can be detachably connected with the other of the upper frame 1 and the lower frame 2. As a specific manner of the rotatable connection, the cross hinge, the ball hinge, or the like can be used. In addition, due to the deformability of the material of the support rod 3 or the upper frame 1 and the lower frame 2, the rotatable connection of one end of the support rod 3 with one of the upper frame 1 and the lower frame 2 can be achieved by only a rivet. In operation, the other end of the support rod 3 is detached from the upper frame 1 or the lower frame 2, and the support rod 3 is rotated towards the upper frame 1 or the lower frame 2, so that the support rod 3 is horizontally arranged. By rotatably connecting one end of the support rod 3 with the upper frame 1 or the lower frame 2 and detachably connecting the other end of the support rod 3 with the upper frame 1 or the lower frame 2, the switching between the use state and the folding state of the folding trolley can be achieved in a simple structure, and the operation of the user is facilitated.

[0074] As another embodiment of the connection of the support rod 3 with the upper frame 1 and / or the lower frame 2, both ends of the support rod 3 can be provided with detachable connection with the upper frame 1 and the lower frame 2. For example, both ends of the support rod 3 are provided with fixing protrusions, and the upper frame 1 and the lower frame 2 are respectively provided with fixing recesses corresponding to the fixing protrusions. By inserting the fixing protrusions into the fixing recesses, the support rod 3 can be vertically arranged. By pulling the fixing protrusions out of the fixing recesses, the support rod 3 can be detached from the upper frame 1 and the lower frame 2. By detachably connecting both ends of the support rod 3 with the upper frame 1 or the lower frame 2, the switching between the use state and the folded state of the folding trolley can be realized in a simple structure, and the operation is easy.

[0075] As another embodiment of the connection of the support rod 3 with the upper frame 1 and / or the lower frame 2, two fixing recesses can be respectively arranged on the upper frame 1 and the lower frame 2, and the distance between the two fixing recesses on the same frame is equal to the distance between the two fixing protrusions. When folding is needed, the two fixing protrusions of the detached support rod can be inserted into the two fixing recesses on the upper frame 1 or the two fixing recesses on the lower frame 2, and then the support rod 3 can be arranged horizontally. In this way, the storage of the support rod 3 can be facilitated.

[0076] As another embodiment of the connection of the support rod 3 with the upper frame 1 and / or the lower frame 2, the support rod 3 can be arranged in a folded manner. Specifically, the support rod 3 can be composed of two support half rods. The two support half rods are rotatably connected to each other at one end thereof, and are rotatably connected to the upper frame 1 and the lower frame 2 at the other end thereof, respectively. The rotatable connection mode can be, for example, a hinge, a ball hinge or the like. When folding, the two support half rods are bent by being rotated towards each other, so that the folding trolley is folded, and the occupied space of the folding trolley is further reduced.

[0077] In some embodiments, as shown in FIG. 1, the support rod 3 and the telescopic support 4 are arranged on different sides of the folding trolley. Figures 1-3

[0078] With the above structure, the support rod 3 and the telescopic support 4 can support the folding trolley on two different sides, thereby improving the stability of the folding trolley in the use state.

[0079] As other embodiments, the support rod 3 and the telescopic support 4 can also be arranged on the same side of the folding trolley.

[0080] In some embodiments, as shown in FIG. 1, the folding trolley has a first side and a second side, the length of the first side is less than the length of the second side, the support rod 3 is arranged on the first side, and the telescopic support 4 is arranged on the second side. Figures 1-3

[0081] ​​With the above structure, the arrangement space of the telescopic support 4 can be increased, and the stability of the folding trolley in use can be enhanced.

[0082] As other embodiments, the telescopic support 4 can also be arranged on the first side, and the support rod 3 is arranged on the second side.

[0083] In some embodiments, as shown in Figures 1-3 The telescopic support 4 includes a first connecting rod 41, an upper end of the first connecting rod 41 is rotationally connected with the upper frame 1, and a lower end of the first connecting rod 41 is rotationally connected with the lower frame 2; and a second connecting rod 42, an upper end of the second connecting rod 42 is rotationally connected with the upper frame 1, and a lower end of the second connecting rod 42 is rotationally connected with the lower frame 2, and the second connecting rod 42 is rotationally connected with the first connecting rod 41. For example, the upper end and the lower end of the first connecting rod 41 can be rotationally connected with the upper frame 1 and the lower frame 2 respectively through a sliding groove or a hinge; the upper end and the lower end of the second connecting rod 42 can be rotationally connected with the upper frame 1 and the lower frame 2 respectively through a sliding groove or a hinge. The middle part of the second connecting rod 42 and the first connecting rod 41 can be rotationally connected through a rivet, for example.

[0084] With the above structure, the first connecting rod 41 and the second connecting rod 42 are not only connected with the upper frame 1 and the lower frame 2 respectively, but also connected with each other, so that the strength of the telescopic support 4 can be improved, thereby improving the stability of the folding trolley. The first connecting rod 41, the second connecting rod 42, the upper frame 1 and the lower frame 2 are rotationally connected respectively, so that the telescopic support 4 can be expanded and compressed through rotation, thereby supporting or not supporting the upper frame 1. The telescopic support 4 is an X-shaped support, and the first connecting rod 41 and the second connecting rod 42 are expanded and compressed through rotation.

[0085] As an embodiment of the rotationally connecting of the telescopic support 4 with the upper frame 1 and the lower frame 2, as shown in Figures 1-3 At least one of the second side edge beams 12 of the upper frame 1 and the second side edge beams 22 of the lower frame 2 is provided with a second sliding groove 23; the first connecting rod 41 and the second connecting rod 42 are respectively provided with a sliding member at one end thereof, which cooperates with the second sliding groove 23, and the first connecting rod 41 and the second connecting rod 42 are respectively rotationally connected with the upper frame 1 or the lower frame 2 at the other end thereof through a hinge or the like.

[0086] As a deformation example of the telescopic support 4, one end of the first connecting rod 41 and one end of the second connecting rod 42 can be respectively provided with a connecting protrusion, and correspondingly, the second side edge beams 12, 22 of both the upper frame 1 and the lower frame 2 can be provided with a connecting recess matched with the connecting protrusion; the other end of the first connecting rod 41 and the other end of the second connecting rod 42 are slidably connected with the second sliding grooves 23 of the second side edge beams 12, 22 of the upper frame 1 and the lower frame 2, which are the same as the above embodiment. When the folding trolley is in the use state, the connecting protrusions are inserted into the connecting recesses; when the folding trolley is in the folded state, the connecting protrusions are pulled out of the connecting recesses. Through the slidable connection of one end of the first connecting rod 41 and the second connecting rod 42 with the second sliding grooves 23 and the plug-in connection of the other end of the first connecting rod 41 and the second connecting rod 42 with the second side edge beams 12, 22, the switching between the use state and the folded state of the folding trolley can be realized in a simple structure, which is easy for the user to operate.

[0087] As another deformation example of the telescopic support 4, the first connecting rod 41 and the second connecting rod 42 of the telescopic support 4 can be slidably hinged at both ends with the second side edge beams 12, 22 of both the upper frame 1 and the lower frame 2. That is, both ends of one second side edge beam 12 of the upper frame 1 can be provided with two second sliding grooves 23; both ends of one second side edge beam 22 of the lower frame 2 can be provided with two second sliding grooves 23. The structure of the second sliding groove 23 is similar to that of the first sliding groove 13. Correspondingly, the first connecting rod 41 and the second connecting rod 42 are respectively provided with sliding members at both ends and are slidably connected with the corresponding second sliding grooves 23. Through the slidable connection of both ends of the first connecting rod 41 and the second connecting rod 42 with the second sliding grooves 23, the sliding stroke of the first connecting rod 41 and the second connecting rod 42 can be increased, providing more freedom for the arrangement of the first connecting rod 41 and the second connecting rod 42.

[0088] As still another deformation example of the telescopic support 4, the telescopic support can be composed of two connecting rods hinged together by a damping hinge. When folding, the damping hinge connecting the two connecting rods can be bent to rotate the two connecting rods to be parallel to each other. Through this arrangement, the area occupied by the telescopic support on the side can be reduced while providing support.

[0089] The first side edge beams 11, 21 and the second side edge beams 12, 22 are movably connected. For example, the first side edge beams 11, 21 and the second side edge beams 12, 22 can be rotatably connected through a hinge structure such as a hinge, a rivet, etc. Alternatively, the first side edge beams 11, 21 and the second side edge beams 12, 22 can be detachably connected.

[0090] With the above structure, the upper frame 1 and the lower frame 2 can be folded in the horizontal direction through the movable connection of the first side beam 11, 21 and the second side beam 12, 22, further reducing the size of the folding trolley in the folded state.

[0091] One end of the first half beam 111, 211 and the second half beam 112, 212 can be rotatably connected through a hinge, and the other end of the first half beam 111, 211 and the second side beam 12, 22 can be rotatably connected through a hinge. The end of the second half beam 112, 212 away from the first half beam 111, 211 and the second side beam 12, 22 can be rotatably connected through a hinge.

[0092] With the above structure, the upper frame 1 and the lower frame 2 can be further folded by rotating in the horizontal plane, further reducing the occupied space of the folding trolley after folding.

[0093] In some embodiments, as shown in Figures 1-3 The first side beam 11, 21 and the second side beam 12, 22 of the upper frame 1 and the lower frame 2 are elongated and plate-shaped.

[0094] The plate-shaped structure can reduce the storage space of the folding trolley in the folded state, making the structure of the folding trolley in the folded state more compact. Of course, the upper frame 1 and the lower frame 2 of the present application are not limited to being composed of the first side beam 11, 21 and the second side beam 12, 22 of the plate-shaped structure, and the first side beam 11, 21 and the second side beam 12, 22 can be rod-shaped or set to the corresponding shape as needed.

[0095] In some embodiments, as shown in Figures 1-3 The folding trolley further comprises a wheel assembly 5 detachably connected to the lower frame 2.

[0096] With the above structure, it can be applied to application scenarios that do not require a wheel assembly 5, and the wheel assembly 5 can be detached from the lower frame 2, facilitating the storage of the folding trolley in the folded state.

[0097] In some embodiments, as shown in Figures 1-3 The wheel assembly 5 comprises a wheel 51 and a wheel mounting portion 52 connected with the wheel 51, and the wheel mounting portion 52 is magnetically connected with the lower frame 2.

[0098] The wheel mounting portion 52 enhances the stability of the connection between the wheel assembly 5 and the lower frame 2. The wheel mounting portion 52 is magnetically connected with the lower frame 2, facilitating the disassembly and assembly of the wheel assembly 5 and the lower frame 2.

[0099] In some embodiments, as shown in Figure 8As shown, the wheel assembly 5 comprises a wheel 51 and a wheel mounting portion 52 connected with the wheel 51. As shown Figures 1-3 As shown, the lower frame 2 has a mounting recess 24, and the wheel mounting portion 52 is provided with a mounting protrusion 53 which is positioned and cooperated with the mounting recess 24, or the lower frame 2 has a mounting protrusion, and the wheel mounting portion 52 is provided with a mounting recess which is positioned and cooperated with the mounting protrusion.

[0100] In some embodiments, the mounting recess 24 and the mounting protrusion 53 can adopt an interference fit at the connecting portion of the wheel mounting portion 52, so as to avoid the wheel assembly 5 from being separated from the mounting recess 24 on the bottom surface of the lower frame 2.

[0101] In some embodiments, at least one of the mounting protrusion 53 and the mounting recess 24 can be made of a material capable of elastic deformation. The mounting protrusion 53 can be provided with a structure with a narrow end and a wide center, and the connecting portion of the wheel mounting portion 52 is narrow. The mounting protrusion 53 is pressed into the mounting recess 24 by extrusion. The wide central part of the mounting protrusion 53 can avoid the wheel assembly 5 from being separated from the mounting recess 24 on the bottom surface of the lower frame 2.

[0102] In some embodiments, the mounting recess 24 can be a half-hole provided on the lower frame 2. The mounting recess 24 can also be a spiral hole provided on the lower frame 2.

[0103] As a variant of the above-mentioned embodiments, when the mounting recess 24 is a spiral hole, the mounting protrusion 53 can be a bolt, and the mounting protrusion 53 is fixed in the mounting recess 24 by screwing the bolt into the spiral hole.

[0104] As a variant of the above-mentioned embodiments, the lower frame 2 has a mounting protrusion, and the wheel mounting portion 52 is provided with a mounting recess which is positioned and cooperated with the mounting protrusion. Specifically, similar to the lower frame 2 having the mounting recess 24 and the wheel mounting portion 52 being provided with the mounting protrusion 53 which is positioned and cooperated with the mounting recess 24, the mounting recess can be a through hole provided on the wheel mounting portion 52, and the through hole can be various shapes such as square, circular, triangular, rectangular, etc. The mounting recess can also be a half-hole provided on the wheel mounting portion 52. The mounting recess can also be a spiral hole provided on the wheel mounting portion 52. Correspondingly, the mounting protrusion can be provided in the second side beam 22 of the lower frame 2. The mounting protrusion can be a protrusion which is adapted to the hole of various shapes such as square, circular, triangular, rectangular, etc. Or the mounting protrusion can be a screw rod which cooperates with the spiral hole.

[0105] The mounting protrusion can be similar to the specific structure of the above-mentioned mounting protrusion 53, and the end size is smaller than the size at the connecting portion with the lower frame 2. Or the mounting protrusion and the mounting recess can adopt an interference fit. For the sake of brevity, it will not be repeated here.

[0106] The concave-convex matching structure between the lower frame 2 and the wheel mounting portion 52 can facilitate the positioning between the lower frame 2 and the wheel mounting portion 52 when the user installs and removes the wheel assembly 5, and facilitate the user to quickly install and remove the wheel. Meanwhile, the concave-convex matching structure design can realize the detachable connection between the wheel assembly 5 and the lower frame 2, which can be applied to application scenarios without wheels, and facilitate the storage of the folding trolley in the folded state. By arranging the mounting concave portion 24 on the lower frame 2, the flatness of the bottom of the folding trolley can be maintained when the wheel assembly 5 is not installed, so that the bottom of the folding trolley is in close contact with the ground. In addition, by arranging the mounting convex portion on the lower frame 2, the bottom of the folding trolley can be kept at a certain distance from the ground when the wheel assembly 5 is not installed, so as to avoid scratching or dirtying the bottom of the folding trolley.

[0107] In some embodiments, as shown in Figures 1-3 The folding trolley further comprises a handle assembly 6 connected with the upper frame 1 or the lower frame 2.

[0108] With the above structure, the folding trolley can be easily moved in the use state.

[0109] In some embodiments, as shown in Figures 1-3 The handle assembly 6 comprises a handle portion 62 and a rope 61. One end of the rope 61 is connected with the handle portion 62, and the other end of the rope 61 is connected with the lower frame 2. The rope 61 can also be replaced by a chain or the like, which facilitates the storage of the folding trolley in the folded state. The handle portion 62 can be annular or semi-annular.

[0110] The rope structure is used as the handle assembly 6 of the folding trolley, which facilitates the storage of the folding trolley in the folded state.

[0111] As a variant of the above embodiment, the handle portion 62 can also be made of a flexible material similar to the rope 61, or be an integral structure with the rope 61, or even not be provided. The other end of the rope 61 can be provided with a clip, which can be clamped on the first half beam 211 and the second half beam 212 of the lower frame 2 in use. Alternatively, the clip can also be clamped on the first half beam 111 and the second half beam 112 of the upper frame 1, so as to fix the handle assembly 6 on the folding trolley.

[0112] As a variant, the other end of the rope 61 can be provided with a hook, and the first side edge beam 11 and / or the first side edge beam 21 of the upper frame 1 and / or the lower frame 2 can be respectively provided with a hole. In use, the hook can be hooked in the hole, so as to fix the handle assembly 6 on the folding trolley.

[0113] In some embodiments, as shown in Figures 1-3 The upper frame 1 is provided with a handle portion 123.

[0114] In some embodiments, the handle portion 123 can be a through slot of the second side beam 22 of the upper frame 1, which can be elliptical, circular, rectangular with rounded corners or wavy to adapt to the contour of the hand, thereby increasing the comfort of the user.

[0115] With the above structure, the user can easily lift the folding trolley, facilitating the carrying and storage of the folding trolley.

[0116] In some embodiments, as shown in Figures 1-3 The folding trolley provided by the embodiments of the present application can further include a containing bag and / or a support bar (or a support plate), and correspondingly, the first side beam 21 of the lower frame 2 is in the form of a plate arranged vertically; the second side beam 22 of the lower frame 2 includes a vertical plate portion 221 and a horizontal plate portion 222; and / or, the first side beam 21 of the lower frame 2 includes a vertical plate portion and a horizontal plate portion, and the support bar or the support plate can be arranged on the horizontal plate portion 222, or the support bar or the support plate can also be arranged at the bottom of the flexible containing bag, and when the containing bag is fixed in the folding trolley, it is supported on the horizontal plate portion 222, thereby supporting the articles contained in the folding trolley from below. The support bar or the support plate can increase the structural strength of the trolley when it is unfolded, thereby enhancing the stability of the trolley.

[0117] In some embodiments, as shown in Figures 1-10 The magic tape can be arranged on the first half beam 111 and the second half beam 112 of the upper frame 1 on the side of the containing space when the trolley is unfolded, and / or the magic tape can be arranged on the first half beam 211 and the second half beam 212 of the lower frame 2 on the side of the containing space when the trolley is unfolded. The containing bag is provided with a magic tape corresponding to the magic tape on the trolley, and the containing bag can be fixed on the trolley by the magic tape, thereby facilitating the containing of articles.

[0118] As a variation of the magic tape, the magic tape of the containing bag and the magic tape of the trolley can be replaced by magnetic strips with magnetism, and the containing bag is fixed on the trolley by the adsorption between the magnetic strips.

[0119] As a variation of the above embodiments, the magic tape of the containing bag and / or the magic tape of the upper frame 1 and / or the lower frame 2 of the trolley can be replaced by magnetic strips with magnetism, and correspondingly, the corresponding positions of the upper frame 1 and / or the lower frame 2 of the trolley are arranged to be made of magnetic material or an adsorption tape made of magnetic material is arranged on the containing bag.

[0120] The following will refer to Figures 1-3 to describe an embodiment of the present application.

[0121] Figures 1-3 Various perspective views of the folding handcart provided in embodiments of this utility model are shown. For example... Figure 3 As shown, the folding trolley provided in this embodiment includes: an upper frame 1, a lower frame 2, a support rod 3, and a telescopic bracket 4.

[0122] Specifically, in use, the upper frame 1 has a first side beam 11 extending along the first horizontal direction X and a second side beam 12 extending along the second horizontal direction Y, and the lower frame 2 has a first side beam 21 extending along the first horizontal direction X and a second side beam 22 extending along the second horizontal direction Y.

[0123] In the example shown in the figure, the lengths of the second side beams 12 and 22 are greater than the lengths of the first side beams 11 and 21. In use (see...) Figure 3 A rectangle is formed by a pair of parallel first side beams 11 and a pair of parallel second side beams 12.

[0124] like Figure 6 As shown, the first side beam 11 of the upper frame 1 includes a first half beam 111 and a second half beam 112; the first side beam 21 of the lower frame 2 includes a first half beam 211 and a second half beam 212. The first half beam 111 and the second half beam 112 of the first side beam 11 of the upper frame 1 can be rotatably connected to each other, for example, by a damping hinge 16, so that they can be folded by rotation along the horizontal plane. Similarly, the first half beam 211 and the second half beam 212 of the first side beam 21 of the lower frame 2 can be rotatably connected to each other, for example, by a damping hinge 16, so that they can be folded by rotation along the horizontal plane.

[0125] Specifically, such as Figure 6 As shown, the damping hinge 16 can be installed on the outside of the first half-beam 111 and the second half-beam 112 of the first side beam 11 of the upper frame 1, relative to the receiving space of the folding trolley in the use state. Correspondingly, the damping hinge 16 can be installed on the outside of the first half-beam 211 and the second half-beam 212 of the first side beam 21 of the lower frame 2, relative to the receiving space of the folding trolley in the use state. This increases the structural strength of the trolley in the use state and improves the stability of the folding trolley in the use state. When folded, the first half-beam 111 and the second half-beam 112 are aligned along... Figures 1-3 The hollow arrows are folded inward until the first half beams 111, 211 and the second half beams 112, 212 are parallel to the corresponding second side beams 12, 22, reducing the space occupied by the folded trolley.

[0126] like Figures 1-10As shown, the first half-beam 111 and the second half-beam 112 of the first side beam 11 of the upper frame 1 are rotatably connected to the second side beam 12 of the upper frame 1 via damping hinges 16. Similarly, the first half-beam 211 and the second half-beam 212 of the first side beam 21 of the lower frame 2 are rotatably connected to the second side beam 22 of the lower frame 2 via damping hinges 16. Specifically, in Figure 3 In the example shown, the damping hinges 16 connecting the first half-beam 111 of the first side beam 11 of the upper frame 1 and the second side beam 12 of the upper frame 1, and the damping hinges 16 connecting the second half-beam 112 of the first side beam 11 of the upper frame 1 and the second side beam 12 of the upper frame 1, are located inside the storage space of the folding trolley in its use state. The damping hinges 16 connecting the first half-beam 211 of the first side beam 21 of the lower frame 2 and the second side beam 22 of the lower frame, and the damping hinges 16 connecting the second half-beam 212 of the first side beam 21 of the lower frame 2 and the second side beam 22 of the lower frame, are also located inside the storage space of the folding trolley in its use state. The damping hinges 16 are fixed to corresponding positions on the upper frame 1 and the lower frame 2 by rivets. The various side beams of the upper frame 1 can also be detachably connected.

[0127] By connecting the side beams of the upper frame 1 and the side beams of the lower frame 2 together using damping hinges 16, the structural strength of the trolley in use can be increased, and the stability of the folding trolley in use can be improved.

[0128] In this embodiment, the first side beam 11 and the second side beam 12 of the upper frame 1 are vertically (Z direction) plate-shaped; the first side beam 21 of the lower frame 2 is vertically plate-shaped; the second side beam 22 of the lower frame 2 includes a vertical plate portion 221 and a horizontal plate portion 222.

[0129] The first side beam 11 and the second side beam 12 of the plate-shaped upper frame 1 can reduce the storage space of the folding trolley in the folded state, making the structure of the folding trolley more compact in the folded state; the horizontal plate portion 222 of the second side beam 22 of the lower frame 2 can be used for subsequent installation of the support rod 3 and the wheel assembly 5.

[0130] like Figure 10 As shown, the first half-beam 111 and the second half-beam 112 of the first side beam 11 of the upper frame 1 are respectively formed with first sliding grooves 13. Figure 10As shown, the first sliding groove 13 extends along the length direction of the first half beam 111 and the second half beam 112 respectively. The support rod 3 is an elongated plate, one end of which is provided with a sliding piece matched with the first sliding groove 13, and the other end is provided with a hinged piece rotatably connected with the first side beam 21 of the lower frame 2. By sliding the support rod 3 along the first sliding groove 13, the support rod 3 can be switched between the erected state and the folded state. In the folded state, the support rod 3 is arranged horizontally, and the upper frame 1 abuts against the lower frame 2; in the use state, the support rod 3 is arranged vertically.

[0131] Specifically, as shown in the drawings, Figure 9 The sliding piece can include a connecting portion 32, a sliding portion 31 and a stop portion (not shown). The connecting portion 32 is connected with the support rod 3; the sliding portion 31 is arranged at the end of the support rod 3 and is a circular protrusion on the support rod 3, one end of the sliding portion 31 is connected with the connecting portion 32, and the other end of the sliding portion 31 is connected with the stop portion (not shown), wherein the sliding portion 31 is configured to slide in the first sliding groove 13 and pass through the first sliding groove 13. The size of the stop portion and the connecting portion 32 can be greater than the width of the first sliding groove 13, so as to prevent the sliding portion 31 from being separated from the first sliding groove 13.

[0132] The hinged piece can rotatably hinge the support rod 3 with the first side beam 21 of the lower frame 2 in any known manner. For example, the hinged piece can be a rivet, which can include a pin passing through the support rod 3 and the first side beam 21 of the lower frame 2, and the two ends of the pin are provided with stop portions, so as to rotatably hinge the support rod 3 with the lower frame 2.

[0133] As shown in the drawings, Figure 9 A stop groove 14 communicating with the first sliding groove 13 can be arranged at one end of the first sliding groove 13. The stop groove 14 can extend transversely from the end of the first sliding groove 13, and in this embodiment, it extends vertically upward.

[0134] By arranging the stop groove 14 extending transversely with the first sliding groove 13, the end of the support rod 3 can be clamped in the stop groove 14, preventing the support rod 3 from moving in the first sliding groove 13 when the folding cart is unfolded, and enhancing the stability of the folding cart in the use state.

[0135] In this embodiment, a limiting protrusion 15 is arranged at one end of the first sliding groove 13. As shown in the drawings, Figure 10As shown, the first sliding groove 13 has a length direction and a width direction perpendicular to the length direction. The limiting protrusion 15 is located at the corner where the first sliding groove 13 and the stop groove 14 connect. It is arc-shaped and protrudes from the edge of the first sliding groove 13 in the length direction towards the lower frame 2 (or in other words, the width direction of the first sliding groove 13), such that in the width direction, the size of the first sliding groove 13 at the limiting protrusion 15 portion is smaller than the size of the first sliding groove 13 at other portions.

[0136] By setting the limiting protrusion 15, the support rod 3 can be prevented from moving within the first sliding groove 13 when the folding trolley is in use, thereby enhancing the stability of the folding trolley in use.

[0137] like Figure 10 As shown, where, Figure 10 (A) and (B) show the state in which one end of the support rod 3 is located in the stop groove 14; Figure 10 (C) shows the state where one end of the support rod 3 is disengaged from the stop groove 14. For example... Figure 3 As shown in (A) and (B), when one end of the support rod 3 is in the stop groove 14, the sliding part 31 abuts against the upper edge of the stop groove 14. When the folding trolley needs to be folded, the user can lift the first half beam 111 upwards, causing the sliding part 31 to disengage from the stop groove 14 and slide along the first sliding groove 13.

[0138] Preferably, in the upright state, the support rod 3 is at a predetermined distance from the edge of the first side beams 11 and 21 in the first horizontal direction. This allows the support rod 3 to provide support at a certain distance from the two ends of the first side beams 11 and 21, thereby ensuring the strength of the first side beams 11 and 21, preventing damage to the hinges between the individual halves of the first side beams 11 and 21 due to stress, and maintaining the stability of the folding trolley.

[0139] like Figure 3 As shown, the telescopic bracket 4 is installed on the second side beams 12 and 22 of the folding handcart, whose length is greater than that of the first side beams 11 and 21.

[0140] Specifically, the telescopic bracket 4 includes a first connecting rod 41 and a second connecting rod 42. The first connecting rod 41 and the second connecting rod 42 intersect and are rotatably connected at the middle. In this embodiment, the rotatable connection is achieved by rivets. The second side beam 12 of the upper frame 1 is provided with a second sliding groove 23; the second side beam 22 of the lower frame 2 is also provided with a second sliding groove 23. Figures 1-2In the shown embodiment, the second sliding groove 23 of the second side beam 12 of the upper frame 1 and the second sliding groove 23 of the second side beam 22 of the lower frame 2 are located at the same end of the corresponding second side beam 12, 22 relative to the center of the second side beam 12, 22. Of course, the second sliding groove 23 of the second side beam 12 of the upper frame 1 and the second sliding groove 23 of the second side beam 22 of the lower frame 2 are located at the opposite end of the corresponding second side beam 12, 22 relative to the center of the second side beam 12, 22.

[0141] Correspondingly, the first connecting rod 41 and the second connecting rod 42 are respectively provided with a sliding member at one end thereof which cooperates with the second sliding groove 23, and are respectively rotatably connected to the upper frame 1 or the lower frame 2 at the other end thereof by a hinge. The end of the first connecting rod 41 and the second connecting rod 42 can be provided with a rotating shaft, and the upper frame 1 or the lower frame 2 is provided with a rotating hole, so that the first connecting rod 41 and the second connecting rod 42 are rotatably connected to the upper frame 1 or the lower frame 2 by inserting the rotating shaft into the rotating hole.

[0142] The structure of the second sliding groove 23 of the second side beam 12 of the upper frame 1 can be similar to that of the first sliding groove 13. Alternatively, a stop groove which communicates with the second sliding groove 23 is arranged at one end of the second sliding groove 23 and extends transversely to the second sliding groove 23. One end of the second sliding groove 23 can also be provided with a limiting protrusion, and the structure of the limiting protrusion can refer to the description of the limiting protrusion of the first sliding groove 13. Correspondingly, the structure of the second sliding groove 23 of the second side beam 22 of the lower frame 2 can also be similar to that of the first sliding groove 13. For the sake of brevity, no further description is given here.

[0143] By sliding the sliding members of the first connecting rod 41 and the second connecting rod 42 in the second sliding groove 23, the folding trolley is unfolded and folded. Since the length of the second side beam 12 is greater than that of the first side beam 11, the length of the second sliding groove 23 can be set to be long enough to provide a long enough sliding distance for the first connecting rod 41 and the second connecting rod 42, so as to ensure the length of the first connecting rod 41 and the second connecting rod 42 while unfolding and folding the folding trolley.

[0144] Alternatively, the folding trolley provided by the embodiment of the utility model can also include a containing bag and / or a supporting strip (or a supporting plate). The containing bag can be a cloth bag or made of other flexible materials (such as plastic, nylon, etc.). When folding, the flexible containing bag can facilitate folding and occupy a small space. A plurality of supporting strips or supporting plates can be placed between the horizontal plate portions 222 of the second side beam 22 of the lower frame 2, which are used to support the articles contained in the folding trolley from below.

[0145] As Figure 8, 8, the folding trolley further comprises a wheel assembly 5. The wheel assembly 5 comprises a wheel 51 and a wheel mounting portion 52 connected with the wheel 51. The lower frame 2 has a mounting recess 24, and the wheel mounting portion 52 is provided with a mounting protrusion 53 which is positioned and matched with the mounting recess 24.

[0146] Specifically, the mounting recess 24 can be arranged in the horizontal plate portion 222 of the second side beam 22 of the lower frame 2, or can be arranged in the vertical plate portion 221. The mounting recess 24 can be a through hole penetrating through the horizontal plate portion 222, which can be square, circular, triangular, rectangular or various shapes. The wheel assembly 5 comprises the wheel 51 and the wheel mounting portion 52. The wheel 51 is substantially flat and disc-shaped, and is arranged or can be arranged to have its axial direction consistent with the width direction. In this way, the trolley can travel well along the length direction of the upper frame 1 and the lower frame 2, and when the trolley is folded with the wheel 51, the wheels 51 opposite in the width direction will not interfere with each other, so that the trolley can be folded to a smaller size as much as possible.

[0147] As shown in Figure 6 , the end of the mounting protrusion 53 is smaller in size than the size at the connecting portion of the mounting protrusion 53 and the wheel mounting portion 52, so as to facilitate the insertion of the mounting protrusion 53 into the mounting recess 24 on the bottom surface of the lower frame 2. As shown in Figures 1-2 , a magnet 25 can be arranged around the mounting recess 24, and the wheel mounting portion 52 is made of a magnetic material. The magnet 25 and the wheel mounting portion 52 are attracted together, so as to avoid the wheel assembly 5 from being separated from the mounting recess 24 on the bottom surface of the lower frame 2.

[0148] As shown in Figures 1-3 , the folding trolley provided by the embodiment further comprises a handle assembly 6. The handle assembly 6 comprises a rope 61 and a handle portion 62 connected with the rope 61. One end of the rope 61 is connected with the lower frame 2, and the other end of the rope 61 is connected with the handle portion 62. The rope 61 can be made of flexible materials, such as nylon, polyester fiber, chemical fiber or hemp rope. Alternatively, the rope 61 can be a chain structure, which is convenient for folding and storage.

[0149] The handle portion 62 can be annular, which is made of hard materials (such as metal, plastic, hard rubber), and can be fixedly connected with the rope 61 (for example, the rope 61 is wound around the handle for one turn, the end of the rope 61 is sewn with the rope, or the handle is injection molded with the end of the rope 61 in the injection molding process).

[0150] Compared with a metal rod made of metal or hard material, the flexibility of the rope 61 can facilitate the storage of the folding trolley in the folded state.

[0151] As shown in Figures 3-5As shown, the folding trolley can further comprise a handle portion 123 arranged on the second side beam 12 of the upper frame 1. The handle portion 123 can be a through slot in the second side beam 22 of the upper frame, and the through slots in the pair of second side beams 22 are identical in size and position. In the folded state of the trolley, the through slots can be inserted by the fingers of the same hand of the operator to facilitate the operator to pick up the trolley. The through slot can be an elongated strip with rounded ends.

[0152] The folding manner of the folding trolley provided by the embodiment of the present application is described below. As shown in Figure 6 When it is necessary to fold the folding trolley, the containing bag is detached from the folding trolley, the mounting protrusion 53 of the wheel assembly 5 is pulled out of the mounting recess 24 of the lower frame 2, and then the rope 61 is disconnected from the lower frame 2, so as to detach the wheel assembly 5 and the handle assembly 6. As shown in Figure 4 The first half beams 111, 211 and the second half beams 112, 212 of the first side beams 11, 21 of the upper frame 1 and the lower frame 2 are pushed towards the containing space of the trolley, so that the first half beams 111, 211 and the second half beams 112, 212 are rotated on the horizontal plane until the first half beams 111, 211 and the second half beams 112, 212 are substantially parallel to the second side beams 12, 22 of the upper frame 1 and the lower frame 2, respectively (as shown in Figure 5 ). Then the handle portion 123 is pulled up, and under the action of gravity, the upper frame 1 is lifted relative to the lower frame 2, so that the portion of the supporting rod 3 located in the stop groove 14 is separated from the stop groove 14. The supporting rod 3 is pushed towards the center of the second side beams 12, 22 of the folding trolley, and as the supporting rod 3 slides along the first sliding groove 13, the supporting rod 3 gradually inclines from the vertical state to the horizontal state, and at this time, the X-shaped telescopic support 4 is gradually compressed into a straight line. The upper frame 1 and the lower frame 2 are close to each other until the supporting rod 3 is substantially parallel to the second side beams 12, 22 of the upper frame 1 and the lower frame 2, respectively, and the folding of the folding trolley in the up-down direction and the width direction is completed (as shown in Figure 5 ). The folding process described above is only an example, and the present application is not limited thereto. For example, when folding, the wheel assembly 5 can also not be detached; in addition, the trolley can be first folded in the up-down direction and then folded in the width direction.

[0153] The mounting manner of the folding trolley provided by the embodiment of the present application is described below. As shown in Figure 4As shown, pulling up the handle 123 raises the second side beam 12 of the upper frame 1 relative to the lower frame 2, and the telescopic bracket 4 gradually unfolds, presenting an X-shaped structure. Simultaneously, the support rod 3 slides within the first sliding groove 13 towards the stop groove 14, gradually changing from a horizontal to a vertical orientation. The sliding part 31 of the support rod 3 slides past the limiting protrusion 15 into the stop groove 14, thus limiting the support rod 3 and preventing the upper frame 1 from falling due to its own weight. Figure 3 As shown, ensure that the support rod 3 is in a vertical position. Pull the handles 123 outwards on both sides, so that the distance between the second side beams 12 on both sides of the upper frame 1 and the second side beams 22 on both sides of the lower frame 2 gradually increases. At this time, the first half beams 111, 211 and the second half beams 112, 212 rotate on the horizontal plane until the first half beams 111, 211 and the second half beams 112, 212 are on the same straight line, and the upper frame 1 and the lower frame 2 form a rectangular structure, as shown. Figure 8 As shown. ​ As shown, the mounting protrusion 53 of the wheel mounting part 52 is inserted into the mounting recess 24 of the lower frame 2. Since both the wheel mounting part 52 and the lower frame 2 are equipped with magnets, the wheel mounting part 52 and the lower frame 2 can be securely connected. Finally, the storage bag is installed on the upper frame 1 and the lower frame 2 using Velcro or other means, and then the rope 61 is connected to the first side beam 21 of the lower frame 2, thus completing the installation of the folding handcart. The installation process described above is just an example, and this utility model is not limited to it. For example, during installation, the wheel assembly 5 can be installed first; alternatively, the handcart can be unfolded first in the width direction and then unfolded in the vertical direction.

[0154] Note that the above are merely preferred embodiments and the technical principles employed in this application. Those skilled in the art will understand that this application is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of this application. Therefore, although this application has been described in detail through the above embodiments, this application is not limited to the above embodiments. Many other equivalent embodiments may be included without departing from the technical concept of this application, all of which fall within the scope of protection of this application.

Claims

1. A foldable trolley characterised by, Comprise: an upper frame (1) and a lower frame (2); a support rod (3) connected to the upper frame (1) and the lower frame (2); and a telescopic support (4) connected to the upper frame (1) and the lower frame (2); The folding trolley has a use state and a folding state, In the use state, the support rod (3) supports the upper frame (1), the telescopic support (4) is expanded, and the upper frame (1) is away from the lower frame (2), In the folding state, the upper frame (1) is away from the support of the support rod (3), the telescopic support (4) is compressed, and the upper frame (1) is close to the lower frame (2). In the folding state, the support rod (3) is arranged horizontally or folded, the upper frame (1) abuts against the lower frame (2), and / or 2. The foldable stroller of claim 1, wherein, In the use state, the support rod (3) is arranged vertically. The end of the support rod (3) is movably connected to the upper frame (1) and / or the lower frame (2).

3. The foldable stroller of claim 1, wherein, The end of the support rod (3) is slidably connected to the upper frame (1).

4. The foldable stroller of claim 3, wherein, The upper frame (1) is provided with a first sliding groove (13), and the upper end of the support rod (3) is slidably connected in the first sliding groove (13).

5. The foldable stroller of claim 4, wherein, One end of the first sliding groove (13) is provided with a stop groove (14) in communication with the first sliding groove (13), and the extension direction of the stop groove (14) is different from the extension direction of the first sliding groove (13), 6. The foldable stroller of claim 5, wherein, In the use state, the upper end of the support rod (3) is located in the stop groove (14). The end of the first sliding groove (13) close to the stop groove (14) has a limiting protrusion (15), and the limiting protrusion (15) protrudes towards the first sliding groove (13).

7. The foldable stroller of claim 6, wherein, The support rod (3) and the telescopic support (4) are located on different sides of the folding trolley.

8. The foldable stroller of claim 1, wherein, The folding trolley has a first side and a second side, the length of the first side is less than the length of the second side, 9. The foldable stroller of claim 8, wherein, The support rod (3) is located on the first side, and the telescopic support (4) is located on the second side. The telescopic support (4) comprises:

10. The foldable stroller of claim 1, wherein, a first connecting rod (41), the upper end of the first connecting rod (41) is rotatably connected to the upper frame, and the lower end of the first connecting rod (41) is rotatably connected to the lower frame; and a second connecting rod (42), the upper end of the second connecting rod (42) is rotatably connected to the upper frame, the lower end of the second connecting rod (42) is rotatably connected to the lower frame, and the second connecting rod (42) is rotatably connected to the first connecting rod (41). The upper frame (1) and the lower frame (2) respectively have a first side edge beam (11, 21) extending in a first horizontal direction and a second side edge beam (12, 22) extending in a second horizontal direction, and the first side edge beam (11, 21) and the second side edge beam (12, 22) are movably connected.

11. The foldable stroller of claim 1, wherein, The first side edge beam (11, 21) comprises a first half beam (111, 211) and a second half beam (112, 212), 12. The foldable stroller of claim 11, wherein, ​ One end of the first half beam (111, 211) is rotationally connected with the second half beam (112, 212), the other end of the first half beam (111, 211) is rotationally connected with the second side beam (12, 22), and the second half beam (112, 212) is rotationally connected with the second side beam (12, 22).

13. The foldable stroller according to any one of claims 1-12, wherein, Further comprising: A wheel assembly (5) is detachably connected to the lower frame (2).

14. The foldable stroller of claim 13, wherein, The wheel assembly (5) comprises: A wheel (51); and A wheel mounting portion (52) connected with the wheel (51), and the wheel mounting portion (52) is connected with the lower frame (2) by magnetic attraction.

15. The foldable stroller of claim 13, wherein, The wheel assembly (5) comprises: A wheel (51); and A wheel mounting portion (52) connected with the wheel (51), The lower frame (2) has a mounting recess (24), and the wheel mounting portion (52) is provided with a mounting protrusion (53) matched with the mounting recess (24), or the lower frame (2) has a mounting protrusion, and the wheel mounting portion (52) is provided with a mounting recess matched with the mounting protrusion.

16. The foldable stroller of any one of claims 1-12, wherein, Further comprising: A handle assembly (6) connected with the upper frame (1) or the lower frame (2).

17. The foldable stroller of claim 16, wherein, The handle assembly (6) comprises: A handle portion (62); and A rope (61), one end of which is connected with the handle portion (62), and the other end of which is connected with the lower frame (2).

18. The foldable stroller of any one of claims 1-12, wherein, The upper frame (1) is provided with a handle portion (123).

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