Folding cart

Abstract

The embodiment of the utility model provides a folding cart, and relates to the technical field of outdoor goods. The folding cart comprises a front supporting pipe assembly, a rear supporting pipe assembly and a bottom frame assembly, the front supporting pipe assembly comprises a front fixed pipe assembly and a front sliding pipe assembly, and the front sliding pipe assembly is arranged on the front fixed pipe assembly in a sliding mode; the rear supporting pipe assembly comprises a rear fixed pipe assembly and a rear sliding pipe assembly, and the rear sliding pipe assembly is arranged on the rear fixed pipe assembly in a sliding mode; the bottom frame assembly is hinged to the front sliding pipe assembly and the rear sliding pipe assembly. In the opening state, the height of the front sliding pipe assembly is larger than the height of the front sliding pipe assembly in the folding state. In the opening state, the height of the rear sliding pipe assembly is larger than the height of the rear sliding pipe assembly in the folding state. After the folding cart is folded, the overall height is reduced, the packaging size can be reduced, and the transportation cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of outdoor products technology, and more specifically, to a folding trolley. Background Technology

[0002] A folding trolley is a portable transportation tool with a foldable function. Its core feature is that it reduces its size through a folding structure, thereby improving portability and storage efficiency.

[0003] However, existing folding trolleys tend to increase in height or remain unchanged during the folding process. This design limitation leads to an increase in packaging volume, which in turn increases transportation costs. Utility Model Content

[0004] The purpose of this invention is to provide a folding trolley, which reduces the overall height after folding, thereby reducing packaging volume and transportation costs.

[0005] The embodiments of this utility model are implemented as follows:

[0006] An embodiment of this utility model provides a folding trolley, comprising:

[0007] A front support tube assembly, the front support tube assembly including a front fixed tube assembly and a front sliding tube assembly, the front sliding tube assembly being slidably disposed on the front fixed tube assembly;

[0008] A rear support tube assembly, comprising a rear fixed tube assembly and a rear sliding tube assembly, wherein the rear sliding tube assembly is slidably disposed on the rear fixed tube assembly; and

[0009] A bottom frame assembly, the two ends of which are respectively hinged to the front sliding tube assembly and the rear sliding tube assembly;

[0010] The folding trolley has an open state and a folded state. In the open state, the height of the front sliding tube assembly is greater than the height of the front sliding tube assembly in the folded state; in the open state, the height of the rear sliding tube assembly is greater than the height of the rear sliding tube assembly in the folded state.

[0011] In an optional embodiment, the front fixing tube assembly includes a front fixing tube and a first mounting member, the first mounting member being fixed to the front fixing tube;

[0012] The front sliding tube assembly includes a front sliding tube and a second mounting member. The front sliding tube is slidably engaged with the first mounting member, and the front sliding tube is arranged side by side with the front fixed tube. The second mounting member is fixed to the bottom of the front sliding tube and is hinged to the bottom frame assembly.

[0013] In an optional embodiment, the front support tube assembly further includes a first limiting member, which is fixed to the front fixed tube and located between the first mounting member and the second mounting member, and the front sliding tube is slidably engaged with the first limiting member.

[0014] In an optional embodiment, the first mounting element is fitted onto the front sliding tube.

[0015] In an optional embodiment, one of the first mounting member and the front sliding tube is provided with a first sliding groove, and the other of the first mounting member and the front sliding tube is provided with a first boss, which is disposed in the first sliding groove.

[0016] In an optional embodiment, the rear fixing tube assembly includes a rear fixing tube and a third mounting member, the third mounting member being fixed to the rear fixing tube;

[0017] The rear sliding tube assembly includes a rear sliding tube and a fourth mounting member. The rear sliding tube is slidably engaged with the third mounting member, and the rear sliding tube is arranged side by side with the rear fixed tube. The fourth mounting member is fixed to the bottom of the rear sliding tube and is hinged to the bottom frame assembly.

[0018] In an optional embodiment, the rear support tube assembly further includes a second limiting member, which is fixed to the rear fixed tube and located between the third mounting member and the fourth mounting member, and the rear sliding tube is slidably engaged with the second limiting member.

[0019] In an optional embodiment, the third mounting element is fitted onto the rear sliding tube.

[0020] In an optional embodiment, one of the third mounting member and the rear sliding tube is provided with a second sliding groove, and the other of the third mounting member and the rear sliding tube is provided with a second boss, which is disposed in the second sliding groove.

[0021] In an optional embodiment, there are two front support tube assemblies and two rear support tube assemblies, with the two front support tube assemblies spaced apart and the two rear support tube assemblies spaced apart.

[0022] The bottom frame assembly is simultaneously hinged to the front sliding tube assembly of the two front support tube assemblies and the rear sliding tube assembly of the two rear support tube assemblies.

[0023] In an optional embodiment, the bottom frame assembly includes a fixing plate and a first bottom tube, a second bottom tube, a third bottom tube, and a fourth bottom tube, all hinged to the fixing plate, wherein the first bottom tube, the second bottom tube, the third bottom tube, and the fourth bottom tube are spaced apart along the circumference of the fixing plate.

[0024] The ends of the first and second bottom tubes away from the fixed plate are respectively hinged to the rear sliding tube assemblies of the two rear support tube assemblies; the ends of the third and fourth bottom tubes away from the fixed plate are respectively hinged to the front sliding tube assemblies of the two front support tube assemblies.

[0025] In an optional embodiment, the folding trolley further includes a front cross tube assembly and a rear cross tube assembly. The front cross tube assembly has two front cross tops and two front cross bottoms disposed opposite to each other. The two front cross tops are respectively hinged to the front fixed tube assemblies of the two front support tube assemblies, and the two front cross bottoms are respectively hinged to the front sliding tube assemblies of the two front support tube assemblies.

[0026] The rear cross tube assembly has two rear cross tops and two rear cross bottoms arranged opposite to each other. The two rear cross tops are respectively hinged to the rear fixed tube assemblies of the two rear support tube assemblies, and the two rear cross bottoms are respectively hinged to the rear sliding tube assemblies of the two rear support tube assemblies.

[0027] In an optional embodiment, the folding trolley further includes two side cross tube assemblies spaced apart. The side cross tube assemblies have two oppositely arranged side cross tops and two side cross bottoms. The two side cross tops are respectively hinged to the front fixed tube assembly of the front support tube assembly and the rear fixed tube assembly of the rear support tube assembly. The two side cross bottoms are respectively hinged to the front sliding tube assembly of the front support tube assembly and the rear sliding tube assembly of the rear support tube assembly.

[0028] In an optional embodiment, the folding trolley further includes a pull rod assembly hinged to either the front sliding tube assembly or the rear sliding tube assembly.

[0029] The beneficial effects of this utility model embodiment include:

[0030] The folding trolley includes a front support tube assembly, a rear support tube assembly, and a bottom frame assembly. The front support tube assembly includes a front fixed tube assembly and a front sliding tube assembly, with the front sliding tube assembly slidably mounted on the front fixed tube assembly. The rear support tube assembly includes a rear fixed tube assembly and a rear sliding tube assembly, with the rear sliding tube assembly slidably mounted on the rear fixed tube assembly. Both ends of the bottom frame assembly are hinged to the front sliding tube assembly and the rear sliding tube assembly, respectively. The folding trolley has an open state and a folded state. In the open state, the height of the front sliding tube assembly is greater than that in the folded state; in the open state, the height of the rear sliding tube assembly is greater than that in the folded state.

[0031] The bottom frame assembly enables the front and rear support tube assemblies to open or fold. Specifically, it slides the front sliding tube assembly relative to the front fixed tube assembly, and the rear sliding tube assembly relative to the rear fixed tube assembly. This allows the heights of the front and rear fixed tube assemblies to differ between the open and folded states, enabling sliding adjustment. With this design, during folding, the heights of the front and rear sliding tube assemblies gradually decrease, while the heights of the front and rear fixed tube assemblies remain constant. This results in the folded trolley having a lower overall height than its open state, thus reducing packaging volume and lowering transportation costs. Attached Figure Description

[0032] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 A schematic diagram showing the folding trolley in the open state according to an embodiment of this utility model;

[0034] Figure 2 A schematic diagram illustrating the folding process of the folding trolley provided in this embodiment of the utility model;

[0035] Figure 3 A schematic diagram showing the folding trolley in a folded state according to an embodiment of this utility model;

[0036] Figure 4 This is a schematic diagram of the front support tube assembly provided in an embodiment of the present invention;

[0037] Figure 5 This is a schematic diagram of the structure of the rear support tube assembly provided in an embodiment of the present utility model;

[0038] Figure 6 A schematic diagram of the front support tube assembly provided for other embodiments of this utility model;

[0039] Figure 7 A schematic diagram of the structure of the rear support tube assembly provided for other embodiments of this utility model.

[0040] Icons: 100 - Folding trolley; 10 - Front support tube assembly; 11 - Front fixing tube assembly; 111 - Front fixing tube; 112 - First mounting piece; 1121 - First boss; 12 - Front sliding tube assembly; 121 - Front sliding tube; 1211 - First slide groove; 122 - Second mounting piece; 13 - First limiting piece; 20 - Rear support tube assembly; 21 - Rear fixing tube assembly; 211 - Rear fixing tube; 212 - Third mounting piece; 2121 - Second boss; 22 - Rear sliding tube assembly; 221 - Rear sliding... Pipe; 2211-Second slide rail; 222-Fourth mounting component; 23-Second limiting component; 30-Bottom frame assembly; 31-First bottom pipe; 32-Second bottom pipe; 33-Third bottom pipe; 34-Fourth bottom pipe; 35-Fixing plate; 40-Front cross pipe assembly; 41-Front cross top; 42-Front cross bottom; 50-Rear cross pipe assembly; 51-Rear cross top; 52-Rear cross bottom; 60-Side cross pipe assembly; 61-Side cross top; 62-Side cross bottom; 70-Tie rod assembly; 80-Wheel. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0042] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0043] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0044] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0045] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0046] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0047] As described in the background section, existing folding carts tend to increase in overall height or remain unchanged during the folding process. This design limitation directly leads to an increase in packaging volume, making it impossible to optimize packaging volume and thus increasing transportation costs.

[0048] Based on this, please refer to Figures 1-5 The present invention provides a folding trolley 100, which effectively improves the aforementioned technical problems. Specifically, its overall height is reduced when folded, thus decreasing packaging volume and lowering transportation costs. The folding trolley 100 will be described in detail below.

[0049] Please refer to Figures 1-3 , Figure 1 This is a schematic diagram showing the folding trolley 100 in the open state provided in this embodiment. Figure 2 This is a schematic diagram illustrating the folding process of the folding trolley 100 provided in this embodiment. Figure 3 This is a schematic diagram of the folding trolley 100 provided in this embodiment in a folded state.

[0050] Combination Figures 1-3 The folding trolley 100 includes a front support tube assembly 10, a rear support tube assembly 20, and a bottom frame assembly 30. The front support tube assembly 10 includes a front fixed tube assembly 11 and a front sliding tube assembly 12, with the front sliding tube assembly 12 slidably disposed on the front fixed tube assembly 11. The rear support tube assembly 20 includes a rear fixed tube assembly 21 and a rear sliding tube assembly 22, with the rear sliding tube assembly 22 slidably disposed on the rear fixed tube assembly 21. Both ends of the bottom frame assembly 30 are hinged to the front sliding tube assembly 12 and the rear sliding tube assembly 22, respectively. The folding trolley 100 has an open state and a folded state. In the open state, the height of the front sliding tube assembly 12 is greater than that in the folded state. In the open state, the height of the rear sliding tube assembly 22 is greater than that in the folded state.

[0051] As is easily understood, the bottom frame assembly 30 can drive the front support tube assembly 10 and the rear support tube assembly 20 to open or fold. Specifically, it drives the front sliding tube assembly 12 to slide relative to the front fixed tube assembly 11, and the rear sliding tube assembly 22 to slide relative to the rear fixed tube assembly 21. This allows the heights of the front fixed tube assembly 11 and the front sliding tube assembly 12, and the rear fixed tube assembly 21 and the rear sliding tube assembly 22, to be different in the folded and open states, enabling sliding adjustment. With this configuration, during the folding process, the heights of the front sliding tube assembly 12 and the rear sliding tube assembly 22 will gradually decrease, while the heights of the front fixed tube assembly 11 and the rear fixed tube assembly 21 will remain unchanged. This makes the overall height of the folding trolley 100 after folding less than its overall height after opening, thereby reducing the height of the folded trolley 100, thus reducing the packaging volume and lowering transportation costs.

[0052] It should be noted that in this embodiment, there are two front support tube assemblies 10 and two rear support tube assemblies 20, with the two front support tube assemblies 10 spaced apart and the two rear support tube assemblies 20 spaced apart. The bottom frame assembly 30 is hinged to the front sliding tube assemblies 12 of the two front support tube assemblies 10 and the rear sliding tube assemblies 22 of the two rear support tube assemblies 20, thereby causing the two front support tube assemblies 10 and the two rear support tube assemblies 20 to move closer to each other and fold together, or to move further apart and open together.

[0053] Further, please refer to Figure 4 , Figure 4 This is a structural schematic diagram of the front support tube assembly 10 provided in this embodiment, combined with... Figures 1-4The front fixed tube assembly 11 includes a front fixed tube 111 and a first mounting member 112, the first mounting member 112 being fixed to the front fixed tube 111. The front sliding tube assembly 12 includes a front sliding tube 121 and a second mounting member 122, the front sliding tube 121 being slidably engaged with the first mounting member 112, and the front sliding tube 121 being arranged side by side with the front fixed tube 111; the second mounting member 122 is fixed to the bottom of the front sliding tube 121, and the second mounting member 122 is hinged to the bottom frame assembly 30.

[0054] Similarly, please refer to Figure 5 , Figure 5 This is a structural schematic diagram of the rear support tube assembly 20 provided in this embodiment, combined with... Figure 5 The rear fixed tube assembly 21 includes a rear fixed tube 211 and a third mounting member 212, the third mounting member 212 being fixedly mounted on the rear fixed tube 211. The rear sliding tube assembly 22 includes a rear sliding tube 221 and a fourth mounting member 222, the rear sliding tube 221 being slidably engaged with the third mounting member 212, and the rear sliding tube 221 being arranged side by side with the rear fixed tube 211; the fourth mounting member 222 is fixedly mounted on the bottom of the rear sliding tube 221, and the fourth mounting member 222 is hinged to the bottom frame assembly 30.

[0055] In other words, the front sliding tube 121 can slide on the first mounting member 112, thereby causing the second mounting member 122 to move relative to the first mounting member 112, and the rear sliding tube 221 can slide on the third mounting member 212, thereby causing the fourth mounting member 222 to move relative to the third mounting member 212.

[0056] It should be noted that, in this embodiment, the sliding engagement between the front sliding tube 121 and the first mounting member 112 is specifically that the first mounting member 112 is sleeved on the front sliding tube 121, that is, the first mounting member 112 is provided with a sliding hole, and the front sliding tube 121 passes through the sliding hole of the first mounting member 112. Similarly, the sliding engagement between the rear sliding tube 221 and the third mounting member 212 is specifically that the third mounting member 212 is sleeved on the rear sliding tube 221, that is, the third mounting member 212 is also provided with a sliding hole, and the rear sliding tube 221 passes through the sliding hole of the third mounting member 212.

[0057] Combination Figures 1-5Understandably, during the unfolding process of the folding trolley 100, the second mounting member 122 moves toward the first mounting member 112, and the fourth mounting member 222 moves toward the third mounting member 212. That is, the front sliding tube 121 slides upward and extends out of the sliding hole of the first mounting member 112, and the rear sliding tube 221 also slides upward and extends out of the sliding hole of the third mounting member 212. During the folding process of the folding trolley 100, the second mounting member 122 moves away from the first mounting member 112, and the fourth mounting member 222 moves away from the third mounting member 212. That is, the front sliding tube 121 slides downward until the top of the front sliding tube 121 retracts into the sliding hole of the first mounting member 112, and the rear sliding tube 221 also slides downward until the top of the rear sliding tube 221 retracts into the sliding hole of the third mounting member 212.

[0058] In this way, when the folding trolley 100 is opened, the front sliding tube 121 and the rear sliding tube 221 rise, increasing the overall height of the trolley while maintaining its normal volume. When the folding trolley 100 is folded, the front sliding tube 121 and the rear sliding tube 221 retract, reducing the overall height of the trolley and thus reducing the packaging volume and transportation costs.

[0059] Of course, in other embodiments, other sliding engagement methods may also be used, for example, please refer to Figure 6 and Figure 7 , Figure 6 This is a structural schematic diagram of the front support tube assembly 10 provided in other embodiments. Figure 7 A schematic diagram of the structure of the rear support tube assembly 20 provided for other embodiments.

[0060] Combination Figure 6 and Figure 7 One of the first mounting member 112 and the front sliding tube 121 is provided with a first sliding groove 1211, and the other of the first mounting member 112 and the front sliding tube 121 is provided with a first boss 1121, which is disposed in the first sliding groove 1211. Similarly, one of the third mounting member 212 and the rear sliding tube 221 is provided with a second sliding groove 2211, and the other of the third mounting member 212 and the rear sliding tube 221 is provided with a second boss 2121, which is disposed in the second sliding groove 2211.

[0061] It should be noted that, Figure 6 Specifically, the front sliding tube 121 is shown to have a first sliding groove 1211, and the first mounting member 112 is shown to have a first boss 1121; of course, in some other embodiments, the front sliding tube 121 may also have a first boss 1121, and the first mounting member 112 may have a first sliding groove 1211. Similarly, Figure 7Specifically, the rear sliding tube 221 is provided with a second sliding groove 2211, and the third mounting member 212 is provided with a second boss 2121; of course, in some other embodiments, the rear sliding tube 221 may be provided with a second boss 2121, and the third mounting member 212 may be provided with a second sliding groove 2211.

[0062] Please continue to combine Figure 4 In order to limit the front sliding tube assembly 12, the front support tube assembly 10 also includes a first limiting member 13. The first limiting member 13 is fixed to the front fixed tube 111 and is located between the first mounting member 112 and the second mounting member 122. The front sliding tube 121 and the first limiting member 13 are in sliding cooperation.

[0063] As is easily understood, the first limiting member 13 can limit the second mounting member 122 during its upward movement. That is, when the folding trolley 100 is in the open state, the second mounting member 122 abuts against the first limiting member 13, thereby improving the stability of the folding trolley 100 after it is opened. At the same time, the first limiting member 13 is fixedly connected to the front fixed tube 111 and slides with the front sliding tube 121, which can also improve the sliding stability of the rear sliding tube 221, thereby strengthening the overall structural strength of the front support tube assembly 10 and improving the stability of the folding trolley 100 after it is folded.

[0064] Please continue to combine Figure 5 Similarly, in order to limit the rear sliding tube assembly 22, in this embodiment, the rear support tube assembly 20 also includes a second limiting member 23. The second limiting member 23 is fixed to the rear fixed tube 211 and is located between the third mounting member 212 and the fourth mounting member 222. The rear sliding tube 221 and the second limiting member 23 are in sliding cooperation.

[0065] As is easily understood, the second limiting member 23 can limit the fourth mounting member 222 during its upward movement. That is, when the folding trolley 100 is in the open state, the fourth mounting member 222 abuts against the second limiting member 23, thereby improving the stability of the folding trolley 100 after it is opened. At the same time, the second limiting member 23 is fixedly connected to the rear fixing tube 211 and slides with the rear sliding tube 221, which can also improve the sliding stability of the rear sliding tube 221, thereby strengthening the overall structural strength of the rear support tube assembly 20 and improving the stability of the folding trolley 100 after it is folded.

[0066] Please continue to combine Figure 1 and Figure 2The bottom frame assembly 30 includes a fixed plate 35 and a first bottom tube 31, a second bottom tube 32, a third bottom tube 33, and a fourth bottom tube 34, all hinged to the fixed plate 35. The first bottom tube 31, the second bottom tube 32, the third bottom tube 33, and the fourth bottom tube 34 are spaced apart circumferentially along the fixed plate 35. The ends of the first bottom tube 31 and the second bottom tube 32 away from the fixed plate 35 are respectively hinged to the rear sliding tube assemblies 22 of the two rear support tube assemblies 20; the ends of the third bottom tube 33 and the fourth bottom tube 34 away from the fixed plate 35 are respectively hinged to the front sliding tube assemblies 12 of the two front support tube assemblies 10.

[0067] Understandably, when opening or folding the folding trolley 100, one can simply lift or press the fixing plate 35. That is, the fixing plate 35 can simultaneously drive the two second mounting parts 122 and the two fourth mounting parts 222 to move up and down through the first bottom tube 31, the second bottom tube 32, the third bottom tube 33 and the fourth bottom tube 34, so that the two front sliding tubes 121 and the two rear sliding tubes 221 can move up and down. The operation is convenient and quick, which can improve the opening and folding efficiency of the folding trolley 100 and thus enhance the user experience.

[0068] Furthermore, the folding trolley 100 also includes a front cross tube assembly 40 and a rear cross tube assembly 50. The front cross tube assembly 40 has two front cross tops 41 and two front cross bottoms 42 disposed opposite to each other. The two front cross tops 41 are respectively hinged to the front fixed tube assemblies 11 of the two front support tube assemblies 10, and the two front cross bottoms 42 are respectively hinged to the front sliding tube assemblies 12 of the two front support tube assemblies 10. Specifically, in this embodiment, the two front cross tops 41 are respectively hinged to two first mounting members 112, and the two front cross bottoms 42 are respectively hinged to two second mounting members 122.

[0069] Similarly, the rear cross tube assembly 50 has two rear cross tops 51 and two rear cross bottoms 52 disposed opposite to each other. The two rear cross tops 51 are respectively hinged to the rear fixed tube assemblies 21 of the two rear support tube assemblies 20, and the two rear cross bottoms 52 are respectively hinged to the rear sliding tube assemblies 22 of the two rear support tube assemblies 20. Specifically, in this embodiment, the two rear cross tops 51 are respectively hinged to two third mounting members 212, and the two rear cross bottoms 52 are respectively hinged to two fourth mounting members 222.

[0070] By incorporating the front cross tube assembly 40 and the rear cross tube assembly 50, which work in conjunction with the bottom frame assembly 30, the overall support stability of the folding trolley 100 is improved, fulfilling the trolley's storage function. Furthermore, the two front support tube assemblies 10 can be folded closer together or opened further apart via the front cross tube assembly 40, and the two rear support tube assemblies 20 can be folded closer together or opened further apart via the rear cross tube assembly 50. This further reduces the overall volume of the folding trolley 100 after folding, thereby further lowering transportation costs.

[0071] Please continue to combine Figure 1 and Figure 2 The folding trolley 100 also includes two side cross tube assemblies 60 spaced apart. The side cross tube assembly 60 has two side cross tops 61 and two side cross bottoms 62 arranged opposite to each other. The two side cross tops 61 are respectively hinged to the front fixed tube assembly 11 of the front support tube assembly 10 and the rear fixed tube assembly 21 of the rear support tube assembly 20. The two side cross bottoms 62 are respectively hinged to the front sliding tube assembly 12 of the front support tube assembly 10 and the rear sliding tube assembly 22 of the rear support tube assembly 20.

[0072] Specifically, in this embodiment, the top 61 of the two side crosses are hinged to the first mounting member 112 and the third mounting member 212, respectively, and the bottom 62 of the two side crosses are hinged to the second mounting member 122 and the fourth mounting member 222, respectively. By setting the two side cross tube assemblies 60, they can also cooperate with the bottom frame assembly 30 to improve the overall support stability of the folding trolley 100 and meet the trolley's storage function.

[0073] Optionally, the folding trolley 100 also includes a pull rod assembly 70, which is hinged to the front sliding tube assembly 12 or the rear sliding tube assembly 22, enabling the user to push and pull the folding trolley 100.

[0074] Specifically, in this embodiment, the pull rod assembly 70 is hinged to the front sliding tube assembly 12, and the pull rod assembly 70 is simultaneously hinged to both second mounting members 122; of course, in other embodiments, the pull rod assembly 70 may also be hinged to the rear sliding tube assembly 22.

[0075] In addition, the folding trolley 100 also includes wheels 80, and the bottom of the front fixing tube assembly 11 and the rear fixing tube assembly 21 are both provided with wheels 80.

[0076] In summary, the embodiments of this utility model provide a folding trolley 100, which includes a front support tube assembly 10, a rear support tube assembly 20, and a bottom frame assembly 30. The front support tube assembly 10 includes a front fixed tube assembly 11 and a front sliding tube assembly 12, with the front sliding tube assembly 12 slidably disposed on the front fixed tube assembly 11. The rear support tube assembly 20 includes a rear fixed tube assembly 21 and a rear sliding tube assembly 22, with the rear sliding tube assembly 22 slidably disposed on the rear fixed tube assembly 21. The two ends of the bottom frame assembly 30 are respectively hinged to the front sliding tube assembly 12 and the rear sliding tube assembly 22. The folding trolley 100 has an open state and a folded state. In the open state, the height of the front sliding tube assembly 12 is greater than that in the folded state. In the open state, the height of the rear sliding tube assembly 22 is greater than that in the folded state.

[0077] The bottom frame assembly 30 can drive the front support tube assembly 10 and the rear support tube assembly 20 to open or fold. Specifically, it drives the front sliding tube assembly 12 to slide relative to the front fixed tube assembly 11, and the rear sliding tube assembly 22 to slide relative to the rear fixed tube assembly 21. This allows the heights of the front fixed tube assembly 11 and the front sliding tube assembly 12, and the rear fixed tube assembly 21 and the rear sliding tube assembly 22, to be different in the folded and open states, enabling sliding adjustment. With this configuration, during the folding process, the heights of the front sliding tube assembly 12 and the rear sliding tube assembly 22 will gradually decrease, while the heights of the front fixed tube assembly 11 and the rear fixed tube assembly 21 will remain unchanged. This makes the overall height of the folding trolley 100 after folding less than its overall height after opening, thereby reducing the height of the folded trolley 100, reducing packaging volume, and lowering transportation costs.

[0078] The above description is merely a specific embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A folding trolley, characterized in that, include: A front support tube assembly (10) includes a front fixed tube assembly (11) and a front sliding tube assembly (12), wherein the front sliding tube assembly (12) is slidably disposed on the front fixed tube assembly (11). The rear support tube assembly (20) includes a rear fixed tube assembly (21) and a rear sliding tube assembly (22), wherein the rear sliding tube assembly (22) is slidably disposed on the rear fixed tube assembly (21). as well as The bottom frame assembly (30) has two ends hinged to the front sliding tube assembly (12) and the rear sliding tube assembly (22), respectively. The folding trolley (100) has an open state and a folded state. In the open state, the height of the front sliding tube assembly (12) is greater than the height of the front sliding tube assembly (12) in the folded state. In the open state, the height of the rear sliding tube assembly (22) is greater than the height of the rear sliding tube assembly (22) in the folded state.

2. The folding trolley according to claim 1, characterized in that, The front fixing tube assembly (11) includes a front fixing tube (111) and a first mounting member (112), the first mounting member (112) being fixed to the front fixing tube (111); The front sliding tube assembly (12) includes a front sliding tube (121) and a second mounting member (122). The front sliding tube (121) is slidably engaged with the first mounting member (112), and the front sliding tube (121) is arranged side by side with the front fixed tube (111). The second mounting member (122) is fixed to the bottom of the front sliding tube (121), and the second mounting member (122) is hinged to the bottom frame assembly (30).

3. The folding trolley according to claim 2, characterized in that, The front support tube assembly (10) further includes a first limiting member (13), which is fixed to the front fixed tube (111) and located between the first mounting member (112) and the second mounting member (122). The front sliding tube (121) is slidably engaged with the first limiting member (13).

4. The folding trolley according to claim 2, characterized in that, The first mounting component (112) is sleeved on the front sliding tube (121).

5. The folding trolley according to claim 2, characterized in that, One of the first mounting member (112) and the front sliding tube (121) is provided with a first sliding groove (1211), and the other of the first mounting member (112) and the front sliding tube (121) is provided with a first boss (1121), which is disposed in the first sliding groove (1211).

6. The folding trolley according to claim 1, characterized in that, The rear fixing tube assembly (21) includes a rear fixing tube (211) and a third mounting member (212), the third mounting member (212) being fixed to the rear fixing tube (211); The rear sliding tube assembly (22) includes a rear sliding tube (221) and a fourth mounting member (222). The rear sliding tube (221) is slidably engaged with the third mounting member (212), and the rear sliding tube (221) is arranged side by side with the rear fixed tube (211). The fourth mounting member (222) is fixed to the bottom of the rear sliding tube (221), and the fourth mounting member (222) is hinged to the bottom frame assembly (30).

7. The folding trolley according to claim 6, characterized in that, The rear support tube assembly (20) further includes a second limiting member (23), which is fixed to the rear fixed tube (211) and located between the third mounting member (212) and the fourth mounting member (222). The rear sliding tube (221) is slidably engaged with the second limiting member (23).

8. The folding trolley according to claim 6, characterized in that, The third mounting component (212) is fitted onto the rear sliding tube (221).

9. The folding trolley according to claim 6, characterized in that, One of the third mounting component (212) and the rear sliding tube (221) is provided with a second sliding groove (2211), and the other of the third mounting component (212) and the rear sliding tube (221) is provided with a second boss (2121), which is disposed in the second sliding groove (2211).

10. The folding trolley according to claim 1, characterized in that, The number of the front support tube assembly (10) and the rear support tube assembly (20) are both two, with the two front support tube assemblies (10) spaced apart and the two rear support tube assemblies (20) spaced apart; The bottom frame assembly (30) is simultaneously hinged to the front sliding tube assembly (12) of the two front support tube assemblies (10) and the rear sliding tube assembly (22) of the two rear support tube assemblies (20).

11. The folding trolley according to claim 10, characterized in that, The bottom frame assembly (30) includes a fixing plate (35) and a first bottom tube (31), a second bottom tube (32), a third bottom tube (33) and a fourth bottom tube (34) all hinged to the fixing plate (35). The first bottom tube (31), the second bottom tube (32), the third bottom tube (33) and the fourth bottom tube (34) are arranged at intervals along the circumference of the fixing plate (35). The ends of the first bottom tube (31) and the second bottom tube (32) away from the fixed plate (35) are respectively hinged to the rear sliding tube assembly (22) of the two rear support tube assemblies (20); the ends of the third bottom tube (33) and the fourth bottom tube (34) away from the fixed plate (35) are respectively hinged to the front sliding tube assembly (12) of the two front support tube assemblies (10).

12. The folding trolley according to claim 10, characterized in that, The folding trolley (100) also includes a front cross tube assembly (40) and a rear cross tube assembly (50). The front cross tube assembly (40) has two front cross tops (41) and two front cross bottoms (42) arranged opposite to each other. The two front cross tops (41) are respectively hinged to the front fixed tube assemblies (11) of the two front support tube assemblies (10), and the two front cross bottoms (42) are respectively hinged to the front sliding tube assemblies (12) of the two front support tube assemblies (10). The rear cross tube assembly (50) has two rear cross tops (51) and two rear cross bottoms (52) arranged opposite to each other. The two rear cross tops (51) are respectively hinged to the rear fixed tube assemblies (21) of the two rear support tube assemblies (20), and the two rear cross bottoms (52) are respectively hinged to the rear sliding tube assemblies (22) of the two rear support tube assemblies (20).

13. The folding trolley according to claim 10, characterized in that, The folding trolley (100) also includes two side cross tube assemblies (60) spaced apart. The side cross tube assembly (60) has two oppositely arranged side cross tops (61) and two side cross bottoms (62). The two side cross tops (61) are respectively hinged to the front fixed tube assembly (11) of the front support tube assembly (10) and the rear fixed tube assembly (21) of the rear support tube assembly (20). The two side cross bottoms (62) are respectively hinged to the front sliding tube assembly (12) of the front support tube assembly (10) and the rear sliding tube assembly (22) of the rear support tube assembly (20).

14. The folding trolley according to any one of claims 1-13, characterized in that, The folding trolley (100) also includes a pull rod assembly (70) which is hinged to the front sliding tube assembly (12) or the rear sliding tube assembly (22).

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