Folding camp vehicle

Abstract

A folding camp vehicle comprises a pull rod assembly, a vehicle frame, trundles and a cloth bag, the vehicle frame comprises a front support, a rear support, a side wall assembly and a chassis assembly, the front support and the rear support are symmetrically arranged and respectively comprise two vertical pipes arranged on the left side and the right side, the two vertical pipes are connected in a foldable mode through two sets of crossed pipes which are connected in a crossed and pivoted mode, and chassis pipes are connected to the edges of the four corners of a chassis in a pivoted mode respectively. The other end of the chassis pipe is pivoted to the lower end of the vertical pipe, the two side wall assemblies are symmetrically arranged left and right, the front ends and the rear ends of the side wall assemblies are pivoted to the vertical pipe, connecting pipe assemblies are arranged between the side wall assemblies and the chassis, and the side wall assemblies are driven by the connecting pipe assemblies to be synchronously unfolded and folded along with unfolding and folding of the chassis assembly. The small-size packaging box is simple and reasonable in structure, flexible and convenient to operate and use, small in size after being folded and convenient to store and carry, and small-size packaging is achieved while the requirements for large volume size and high structural strength are met.

Description

Technical Field

[0001] The utility model belongs to the technical field of outdoor products, and relates to a camp cart, in particular to a folding camp cart. Background Art

[0002] The camp cart is one of the most practical equipment for outdoor camping, mainly used in outdoor places such as squares, beaches, parks and courtyards. In addition to loading the necessary materials for camping, it can usually be used to pick up express deliveries, take children for a walk, and even move houses, set up stalls, etc. in any scenario where items need to be carried, facilitating people to carry a large amount of activity materials. The camp cart generally consists of four parts: traction, storage, load-bearing, and movement. In order to facilitate storage and carrying, the existing camp carts are generally designed into a foldable structure, but the operation is not convenient enough and needs further improvement.

[0003] After investigation, the existing Chinese patent "A Folding Handcart" with the patent number CN202221606025.2 includes a handrail and a frame. Wheels are provided under the frame. The frame includes a bottom frame edge and an upper frame edge, and the bottom frame edge and the upper frame edge are connected by vertical rods. An intermediate rod is provided at the middle position of the bottom frame edge, and folding mechanisms for folding are provided at both ends of the intermediate rod. This handcart can be conveniently folded to meet the use requirements, but there are also problems that the operation is not convenient enough, and the volume after folding is not small enough. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a folding camp cart with a simple and reasonable structure, flexible and convenient operation, and a small size after folding in view of the above technical status.

[0005] The technical solution adopted by the utility model to solve the above technical problems is as follows: A folding camp cart includes a pull rod assembly, a frame, casters, and a cloth bag. It is characterized in that: the frame includes foldable front and rear brackets, side enclosure assemblies, and a chassis assembly. The front and rear brackets are arranged opposite to each other at the front and rear ends. The front bracket and the rear bracket respectively include two vertical pipes arranged left and right. The vertical pipes arranged left and right are foldably connected together by at least two groups of cross pipes arranged left and right and cross-hinged. The chassis assembly includes a chassis, and chassis pipes are respectively pivotally connected to the four corners of the chassis. The other ends of the chassis pipes are respectively pivotally connected to the lower ends of the vertical pipes. The side enclosure assemblies are two arranged opposite to each other left and right. The front and rear ends of the side enclosure assemblies are respectively pivotally connected to the vertical pipes of the front and rear brackets. A connecting pipe assembly is provided between the side enclosure assemblies and the chassis assembly. The side enclosure assemblies are driven by the connecting pipe assembly to be synchronously unfolded and folded along with the unfolding and folding of the chassis assembly. There are four casters, which are respectively installed under the four vertical pipes. The pull rod assembly is installed at the middle position of the front bracket.

[0006] Further, a first fixing block and a sliding block are successively arranged on the riser pipe, wherein the first fixing block is fixedly arranged on the upper part of the riser pipe, and the sliding block is sleeved on the riser pipe in a vertically slidable manner. A set of cross pipes is formed by cross-connecting two pipes. The outer ends of the two pipes are respectively pivotally connected to the first fixing block and the sliding block, and the inner ends are respectively pivotally connected to the two pipes of another set of cross pipes.

[0007] Furthermore, a connecting clamping block is also arranged at the pivotal connection part of the front bracket at the upper position of the horizontally arranged cross pipes. The connecting clamping block serves as the common pivotal connection point of the horizontally juxtaposed cross pipes to increase the strength of the bracket. At the same time, a clamping opening is arranged in front of the connecting clamping block and is clamped and connected with the pull rod assembly.

[0008] Furthermore, a slidable sleeve that can slide up and down is sleeved on the pull rod assembly. A second fixing block is fixedly installed at the lower end of the riser pipe. The left and right ends of the slidable sleeve are pivotally connected to the rotating parts on the second fixing block through connecting pipes. The rotating parts are rotatably connected to the second fixing block in a front-back direction. A support pipe is pivotally connected between the bottom of the pull rod assembly and the middle part of the connecting pipe.

[0009] Further, a second fixing block is fixedly sleeved at the lower end of the riser pipe. A U-shaped connecting seat with an upward opening is convexly arranged on one side of the second fixing block relative to the chassis. U-shaped mounting seats with downward openings for installing and limiting the rotation of one end of the chassis pipe are arranged at the four corner positions of the lower end surface of the chassis. One end of the chassis pipe is inserted into the U-shaped mounting seat and is rotatably connected to the chassis through a rotating pin. The other end of the chassis pipe is inserted into the U-shaped connecting seat of the second fixing block at the lower end of the riser pipe and is pivotally connected to the second fixing block through a connecting pin.

[0010] Furthermore, the side enclosure assembly is arranged oppositely left and right. It includes two long pipes, two short pipes and two branch pipes. The upper ends of the two long pipes are respectively pivotally connected to the upper connecting block, and the lower ends are respectively pivotally connected to the sliding blocks on the riser pipe. The lower ends of the two short pipes are respectively pivotally connected to the lower connecting block, and the upper ends are pivotally connected to the upper side connection holes of the long pipes. An inclined connecting block is slidably sleeved on the short pipes. The upper ends of the two branch pipes are respectively pivotally connected to the first fixing block, and the lower ends are pivotally connected to the inclined connecting block. The middle parts of the branch pipes are pivotally connected to the lower side connection holes of the long pipes.

[0011] Further, the connecting pipe assembly includes three connecting pipes. One ends of the first connecting pipe and the third connecting pipe are respectively pivotally connected to the lower connecting blocks of the left and right side enclosure assemblies. The other end of the first connecting pipe is pivotally connected to the second connecting pipe. The other end of the second connecting pipe is connected to the lower end of the chassis. The other end of the third connecting pipe is pivotally connected to the middle part of the first connecting pipe. The length of the first connecting pipe > the length of the third connecting pipe > the length of the second connecting pipe.

[0012] Further, the connecting pipe assembly includes a flexible connecting piece. The two ends of the flexible connecting piece are respectively pivotally connected to the lower connecting blocks of the left and right side enclosure assemblies. The middle part of the flexible connecting piece is connected to the lower end of the chassis through a short connecting pipe.

[0013] Further, the connecting pipe assembly adopts two sets of telescopic pipe structures arranged symmetrically left and right. Each set of telescopic pipe structures includes a pipe sleeve, an outer pipe, and an inner pipe. One end of the outer pipe is pivotally connected to the left and right sides of the bottom of the chassis. The pipe sleeve is fixedly sleeved on the outer side of the outer pipe close to the chassis. One end of the pipe sleeve is connected to the cloth pocket. The inner pipe is slidably arranged inside the outer pipe. The outer end of the inner pipe is pivotally connected to the lower connecting block of the side wall assembly. A locking mechanism is provided between the outer pipe and the inner pipe.

[0014] Furthermore, the locking mechanism includes a V-shaped or U-shaped elastic sheet. The elastic sheet is inserted through the side of the inner pipe close to the chassis. A buckle protrudes from the bottom of the elastic sheet. A through hole for the buckle to protrude is provided on the side wall of the inner pipe. A positioning hole for the buckle to protrude is provided on the side wall of the outer pipe. The inner pipe and the outer pipe are locked and connected by the buckle on the elastic sheet. The pipe sleeve is divided into two parts: a fixed part and a connecting part. A positioning block protrudes from the fixed part. A corresponding card slot is opened on the side wall of the outer pipe. The fixed part is sleeved on the outer pipe and fixed by the cooperation of the positioning block and the card slot. The connecting part is sleeved at the position corresponding to the elastic sheet. The upper end of the connecting part is connected to the cloth pocket. A connecting piece is provided on the lower side of the connecting part and connected to the fixed part. A convex point corresponding to the buckle is provided at the position of the connecting piece corresponding to the positioning hole of the outer pipe. When the frame is folded up, the chassis drives the outer pipe to move upward, and the cloth pocket drives the pipe sleeve to move upward. The convex point on the pipe sleeve presses the buckle to release the lock between the inner pipe and the outer pipe, and the inner pipe slides out along the outer pipe.

[0015] Further, the pull rod assembly includes a sliding sleeve, an outer connecting pipe, an inner connecting pipe, and a pull handle. The pull handle is fixed to the top of the inner connecting pipe. The sliding sleeve is slidably sleeved on the outer connecting pipe. The left and right ends of the sliding sleeve are pivotally connected to the second fixing block through connecting pipes. A support pipe is pivotally connected between the bottom of the outer connecting pipe and the middle of the connecting pipe. The inner connecting pipe is slidably arranged inside the outer connecting pipe. A positioning mechanism is provided between the inner connecting pipe and the outer connecting pipe.

[0016] Finally, the front two of the casters are universal wheels, and the rear two are directional wheels. The cloth pocket is detachably arranged on the frame and is detachably fixed to the top of the vertical pipe.

[0017] Compared with the prior art, the advantages of the present utility model are as follows: the front and rear brackets, the side wall assembly, and the chassis assembly can all be folded, the folding is convenient, and the volume after folding is small; the connecting pipe assembly between the side wall assembly and the chassis assembly has a simple structure, and the side wall assembly can be unfolded and folded synchronously with the unfolding and folding of the chassis assembly; the inner connecting pipe and the outer connecting pipe of the pull rod assembly can be telescopic, and the positioning is convenient and firm. The structure of the present utility model is simple and reasonable, the operation and use are flexible and convenient, the size after folding is small, it is convenient for storage and carrying, and while meeting the requirements of large volume size and high structural strength, a small-size packaging is realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of Embodiment 1 of the present utility model;

[0019] Figure 2 is the front view of Figure 1 ;

[0020] Figure 3 is the bottom view of Figure 1 ;

[0021] Figure 4 is the structural schematic diagram of another angle of Embodiment 1 of the present utility model;

[0022] Figure 5 is the structural schematic diagram of the connecting pipe assembly in the deployed state of the vehicle in Embodiment 1;

[0023] Figure 6 is the structural schematic diagram of Embodiment 1 of the present utility model in the top view state;

[0024] Figure 7 is Figure 1 in the folded state of the structural schematic diagram;

[0025] Figure 8 is the structural schematic diagram of the connecting pipe assembly in the folded state of the vehicle in Embodiment 1;

[0026] Figure 9 is the three-dimensional structural schematic diagram of Embodiment 1 of the present utility model;

[0027] Figure 10 is the partial three-dimensional structural schematic diagram of Embodiment 1 of the present utility model.

[0028] Figure 11 is the structural schematic diagram of Embodiment 2 of the present utility model;

[0029] Figure 12 is Figure 11 the structural schematic diagram of the connecting pipe assembly in;

[0030] Figure 13 is the structural schematic diagram of another angle of Embodiment 2;

[0031] Figure 14 is the structural schematic diagram of Embodiment 2 in the folded state;

[0032] Figure 15 is the structural schematic diagram of the connecting pipe assembly in the folded state of the vehicle in Embodiment 2;

[0033] Figure 16 is the structural schematic diagram of Embodiment 3 of the present utility model;

[0034] Figure 17 is Figure 11 the structural schematic diagram of the connecting pipe assembly in;

[0035] Figure 18 Schematic diagram of the structure of Example 3 from another angle;

[0036] Figure 19 Schematic diagram of the structure of Example 3 in the folded state;

[0037] Figure 20 Schematic diagram of the structure of the connecting pipe assembly of Example 3 in the folded state of the vehicle;

[0038] Figure 21 is Figure 17 cross-sectional view of. Detailed implementation mode

[0039] The present utility model will be further described in detail below in conjunction with the embodiments with reference to the drawings.

[0040] Embodiment 1

[0041] As Figures 1 to 10 shown, a folding camp cart includes a pull rod assembly 5, a frame 100, casters 6 and a cloth bag 200. The frame 100 includes a foldable front bracket 1 and rear bracket 1', side enclosure assemblies 2 and a chassis assembly 3. Among them, usually the front bracket 1 and the rear bracket 1' are arranged opposite to each other front and back. There are respective fixing blocks 12 and sliding blocks 13 on the left and right sides of the front bracket 1 and the rear bracket 1', that is, fixing blocks 12 and sliding blocks 13 are provided on the left and right risers 11. The two left and right risers 11 are foldably connected together by at least two groups of cross pipes 15 arranged side by side and cross-hinged left and right. The chassis assembly 3 includes a chassis 31. Chassis pipes 32 are respectively pivotally connected to the four corners of the chassis 31. The other ends of the chassis pipes 32 are respectively pivotally connected to the lower ends of the risers 11. The side enclosure assemblies 2 are two symmetrically arranged left and right. The front and rear ends of the side enclosure assemblies 2 are respectively pivotally connected to the risers 11 of the front bracket 1 and the rear bracket 1'. A connecting pipe assembly 4 is provided between the side enclosure assembly 2 and the chassis 3. The side enclosure assembly 2 is driven by the connecting pipe assembly 4 to be synchronously unfolded and folded as the chassis assembly 3 is unfolded and folded. There are four casters 6, which are respectively installed below the four front, rear, left and right risers 11. The pull rod assembly 5 is installed at the middle position of the front bracket 1.

[0042] The specific structure is: As Figures 1 to 4, a first fixing block 12 and a sliding block 13 are successively arranged on each riser 11. The first fixing block 12 is fixedly arranged at the upper part of the riser 11, and the sliding block 13 is sleeved on the riser 11 in a vertically slidable manner. A group of crossover pipes 15 is formed by cross-connecting two pipes 15a. The outer ends of the two pipes 15a are respectively pivotally connected to the first fixing block 12 and the sliding block 13, and the inner ends are respectively pivotally connected to the two pipes 15a of another group of crossover pipes 15. In this way, two groups of crossover pipes 15 that are arranged side by side left and right and cross-pivotally connected are formed. Due to the need for folding adjustment, the first fixing blocks 12 on the left and right risers 11 are immovable and remain at approximately the same height, while the sliding blocks 13 can move up and down. In this way, the basic folding mechanism of the front bracket 1 and the rear bracket 1' is formed. Because a tie rod assembly 5 is also arranged on the front bracket 1, on the front bracket 1, connection blocks 16 are also arranged at the pivotal connection parts of the crossover pipes 15 arranged side by side left and right in the upper position. The connection blocks 16 can serve as the common pivotal connection points of the crossover pipes 15 arranged side by side left and right to increase the strength of the bracket. At the same time, a bayonet 18 is arranged in front of the connection block 16 and is engaged with the tie rod assembly 5. In order to increase the strength of the front bracket 1 and facilitate the flipping use of the tie rod assembly 5, a slidable sleeve 54 that can slide up and down is sleeved on the tie rod assembly 5. A second fixing block 14 is fixedly installed at the lower end of each riser 11. The left and right ends of the slidable sleeve 54 are pivotally connected to the rotating parts 17 on the second fixing block 14 through connecting pipes 55. The rotating parts 17 are rotatably connected to the second fixing block 14 in a front-back direction. A support pipe 56 is pivotally connected between the bottom of the tie rod assembly 5 and the middle of the connecting pipe 55. In this way, the complete structure of the front bracket 1 is formed. A second fixing block 14 is fixedly installed at the lower end of each riser 11. A U-shaped connecting seat 14a with an upward opening is convexly provided on one side of the second fixing block 14 relative to the chassis 31. U-shaped mounting seats 31a with downward openings for installing and limiting the rotation of one end of the chassis pipe 32 are provided at the four corner positions of the lower end surface of the chassis 31. One end of the chassis pipe 32 is inserted into the U-shaped mounting seat 31a and is rotatably connected to the chassis 31 through a rotating pin. The other end of the chassis pipe 32 is inserted into the U-shaped connecting seat 14a of the second fixing block 14 at the lower end of the riser 11 and is pivotally connected to the second fixing block 14 through a connecting pin.

[0043] As Figure 2, the side enclosure assembly 2 includes two long tubes 21, two short tubes 22 and two branch tubes 23. The upper ends of the two long tubes 21 are respectively pivotally connected to the upper connection blocks 24, and the lower ends are respectively pivotally connected to the sliding blocks 13 on the vertical tube 11. The lower ends of the two short tubes 22 are respectively pivotally connected to the lower connection blocks 25, and the upper ends are pivotally connected to the upper side connection holes of the long tubes 21. An inclined connection block 26 is slidably sleeved on the short tube 22. The upper ends of the two branch tubes 23 are respectively pivotally connected to the first fixing blocks 12, the lower ends are pivotally connected to the inclined connection block 26, and the middle parts of the branch tubes 23 are pivotally connected to the lower side connection holes of the long tubes 21. When the frame is folded up, the sliding block 13 slides downward along the vertical tube 11 while the inclined connection block 26 slides downward along the short tube 22. When the frame is opened, the sliding block 13 slides upward along the vertical tube 11 while the inclined connection block 26 slides upward along the short tube 22.

[0044] As Figures 6 to 9 , the connecting tube assembly 4 includes three connecting tubes. One ends of the first connecting tube 41 and the third connecting tube 43 are respectively pivotally connected to the lower connection blocks 25 of the left and right side enclosure assemblies 2. The other end of the first connecting tube 41 is pivotally connected to the second connecting tube 42. The other end of the second connecting tube 42 is pivotally connected to the lower end of the chassis 31. The other end of the third connecting tube 43 is pivotally connected to the middle part of the first connecting tube 41. The length of the first connecting tube 41 > the length of the third connecting tube 43 > the length of the second connecting tube 42. When the frame is unfolded, the second connecting tube 42 is exactly placed above the third connecting tube 43.

[0045] As Figure 4 , 10 , the pull rod assembly 5 includes a sliding sleeve 54, an outer connecting tube 53, an inner connecting tube 52 and a pull handle 51. The pull handle 51 is fixed to the top of the inner connecting tube 52. The sliding sleeve 54 is slidably sleeved on the outer tube 53. The left and right ends of the sliding sleeve 54 are pivotally connected to the rotating parts 17 on the second fixing block 14 through connecting tubes 55. A support tube 56 is pivotally connected between the bottom of the outer connecting tube 53 and the middle part of the connecting tube 55. The inner connecting tube 52 is slidably arranged inside the outer connecting tube 53, and a positioning mechanism is provided between the inner connecting tube 52 and the outer connecting tube 53. The positioning mechanism is the same as the prior art and will not be specifically described here.

[0046] Among the casters 6, the front two are universal wheels and the rear two are directional wheels. The cloth bag 200 is detachably arranged on the frame and is detachably fixed to the top of the vertical tube 11. Usually, sleeve connection or cord connection or buckle connection etc. can be adopted.

[0047] When in use, pull the four vertical pipes 11 back and forth and squeeze them left and right, so that the front and rear brackets 1, 1' and the left and right side wall components 2 are unfolded as the chassis component 3 unfolds. Then, disengage the pull rod assembly 5 from the connecting block 16, so that the pull rod assembly 5 forms a suitable pulling angle with the second fixing block 14 through the rotating member 17, and the folding camp cart can be pulled or pushed forward and backward. When folding, rock the pull rod assembly 5 backward and engage it with the connecting block 16 again. Then, squeeze the four vertical pipes 11 back and forth and left and right, so that the front and rear brackets 1, 1' and the left and right side wall components 2 are folded again as the chassis component 3 folds.

[0048] Embodiment 2

[0049] As Figures 11 to 15 shown, a folding camp cart, different from Embodiment 1 in that the connecting pipe assembly 4 is different. The connecting pipe assembly 4 of this embodiment includes a flexible connecting member 4a. The two ends of the flexible connecting member 4a are respectively pivotally connected to the lower connecting blocks 25 of the left and right side wall components 2. The middle of the flexible connecting member 4a is connected to the lower end of the chassis 31 through a short connecting pipe 4b. When the cart is folded up, the chassis 31 drives the short connecting pipe 4b to move upward, and the flexible connecting member 4a folds, driving the side wall components 2 to fold. When the cart is opened, the flexible connecting member 4a unfolds.

[0050] Embodiment 3

[0051] As Figures 16 to 21 shown, a folding camp cart, different from Embodiment 1 in that the connecting pipe assembly 4 is different. The connecting pipe assembly 4 of this embodiment adopts two sets of telescopic pipe structures arranged symmetrically left and right. Each set of telescopic pipe structures includes a pipe sleeve 4A, an outer pipe 4B and an inner pipe 4C. One end of the outer pipe 4B is pivotally connected to the left and right sides of the bottom of the chassis 31. The pipe sleeve 4A is fixedly sleeved outside the outer pipe 4B near the chassis 31. One end of the pipe sleeve 4A is connected to the cloth bag. The inner pipe 4C is slidably arranged inside the outer pipe 4B. The outer end of the inner pipe 4C is pivotally connected to the lower connecting block 25 of the side wall component 2. A locking mechanism is provided between the outer pipe 4B and the inner pipe 4C.

[0052] The locking mechanism includes a V-shaped elastic piece 40. The elastic piece 40 is disposed on the side of the inner tube 4C close to the chassis 31. A buckle 401 protrudes from the bottom of the elastic piece 40. A through hole for the buckle 401 to protrude is provided on the side wall of the inner tube 4C, and a positioning hole for the buckle 401 to protrude is provided on the side wall of the outer tube 4B. The inner tube 4C and the outer tube 4B are locked and connected through the buckle 401 on the elastic piece 40. The tube sleeve 4A is divided into two parts, a fixing part 4A3 and a connecting part 4A4. A positioning block 4A2 protrudes from the fixing part 4A3. A corresponding slot is provided on the side wall of the outer tube 4B. The fixing part 4A3 is sleeved on the outer tube 4B and fixed by the cooperation of the positioning block 4A2 and the slot. The connecting part 4A4 is sleeved at a position corresponding to the elastic piece 40. The upper end of the connecting part 4A4 is connected to the cloth bag. A connecting piece 4A5 is provided on the lower side of the connecting part 4A4 and connected to the fixing part 4A3. A bump 4A1 corresponding to the buckle 401 is provided at a position of the connecting piece 4A5 corresponding to the positioning hole of the outer tube 4B. When the frame is folded up, the chassis 31 drives the outer tube 4B to move upward, and the cloth bag drives the tube sleeve 4A to move upward. The bump 4A1 on the tube sleeve 4A presses the buckle 401 to release the lock between the inner tube 4C and the outer tube 4B, and the inner tube 4C slides out along the outer tube 4B. When the frame is opened, the inner tube 4C slides along the outer tube 4B. At the same time, the bump 4A1 pops out from the positioning hole of the outer tube 4B. When the inner tube 4C is inserted in place, the buckle 401 pops out to lock the outer tube 4B and the inner tube 4C.

[0053] In this way, the frame can be folded in the front, back, left and right directions, with flexible operation and convenient use. The size after folding is smaller, minimizing the packaging and facilitating storage and carrying. While meeting the requirements of large volume size and high structural strength, it realizes small-size packaging.

[0054] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and refinements can still be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A folding camp cart, comprising a pull rod assembly, a frame, casters and a cloth bag, characterized in that: The frame includes foldable front and rear brackets, side enclosure components, and a chassis component. The front and rear brackets are arranged opposite to each other in the front and rear directions. The front bracket and the rear bracket each include two vertical pipes arranged left and right. The vertical pipes arranged left and right are foldably connected together by at least two sets of cross pipes arranged left and right and cross-hinged. The chassis component includes a chassis. Chassis pipes are pivotally connected to the four corners of the chassis respectively. The other ends of the chassis pipes are pivotally connected to the lower ends of the vertical pipes. The side enclosure components are two arranged opposite to each other left and right. The front and rear ends of the side enclosure components are pivotally connected to the vertical pipes of the front and rear brackets respectively. A connecting pipe component is provided between the side enclosure components and the chassis component. The side enclosure components are driven by the connecting pipe component to be unfolded and folded synchronously with the unfolding and folding of the chassis component. There are four casters, which are respectively installed under the four vertical pipes. The pull rod component is installed at the middle position of the front bracket.

2. The folding camping cart according to claim 1, wherein: A first fixing block and a sliding block are sequentially provided on the vertical pipe. The first fixing block is fixedly arranged at the upper part of the vertical pipe. The sliding block is sleeved on the vertical pipe in a slidable manner up and down. A set of cross pipes is formed by cross-connecting two pipes. The outer ends of the two pipes are respectively pivotally connected to the first fixing block and the sliding block, and the inner ends are respectively pivotally connected to the two pipes of another set of cross pipes.

3. The folding camp cart according to claim 2, wherein: A connecting clamping block is further provided at the pivoting part of the front bracket at the upper position of the cross pipes arranged left and right. The connecting clamping block serves as a common pivoting point for the cross pipes arranged side by side left and right to increase the strength of the bracket. At the same time, a clamping opening is arranged in front of the connecting clamping block and is clamped and connected with the pull rod component.

4. The folding camp cart according to claim 3, wherein: A slidable sleeve is sleeved on the pull rod component. A second fixing block is fixedly installed at the lower end of the vertical pipe. The left and right ends of the slidable sleeve are pivotally connected to the rotating parts on the second fixing block through connecting pipes. The rotating parts are rotatably connected to the second fixing block in the front and rear directions. A support pipe is pivotally connected between the bottom of the pull rod component and the middle part of the connecting pipe.

5. The folding camp cart according to claim 1, wherein: A second fixing block is fixedly sleeved at the lower end of the vertical pipe. A U-shaped connecting seat with an upward opening is convexly provided on one side of the second fixing block relative to the chassis. U-shaped mounting seats with downward openings for installing and limiting the rotation of one end of the chassis pipe are provided at the four corner positions of the lower end surface of the chassis. One end of the chassis pipe is inserted into the U-shaped mounting seat and is rotatably connected to the chassis through a rotating pin. The other end of the chassis pipe is inserted into the U-shaped connecting seat of the second fixing block at the lower end of the vertical pipe and is pivotally connected to the second fixing block through a connecting pin.

6. The folding camp cart according to claim 1, wherein: The side enclosure components are arranged opposite to each other left and right. It includes two long pipes, two short pipes, and two branch pipes. The upper ends of the two long pipes are respectively pivotally connected to the upper connecting blocks, and the lower ends are respectively pivotally connected to the sliding blocks on the vertical pipes. The lower ends of the two short pipes are respectively pivotally connected to the lower connecting blocks, and the upper ends are pivotally connected to the upper side connection holes of the long pipes. An inclined connecting block is slidably sleeved on the short pipes. The upper ends of the two branch pipes are respectively pivotally connected to the first fixing blocks, and the lower ends are pivotally connected to the inclined connecting blocks. The middle parts of the branch pipes are pivotally connected to the lower side connection holes of the long pipes.

7. The folding camp cart according to claim 6, wherein: The connecting pipe assembly includes three connecting pipes. One end of the first connecting pipe and the third connecting pipe are respectively pivotally connected to the lower connecting blocks of the left and right side wall assemblies. The other end of the first connecting pipe is pivotally connected to the second connecting pipe. The other end of the second connecting pipe is connected to the lower end of the chassis. The other end of the third connecting pipe is pivotally connected to the middle part of the first connecting pipe. The length of the first connecting pipe > the length of the third connecting pipe > the length of the second connecting pipe.

8. The folding camp cart according to claim 6, wherein: The connecting pipe assembly includes a flexible connecting piece. Both ends of the flexible connecting piece are respectively pivotally connected to the lower connecting blocks of the left and right side wall assemblies. The middle part of the flexible connecting piece is connected to the lower end of the chassis through a short connecting pipe.

9. The folding camping cart according to claim 6, wherein: The connecting pipe assembly adopts two sets of telescopic pipe structures arranged symmetrically left and right. Each set of telescopic pipe structures includes a pipe sleeve, an outer pipe and an inner pipe. One end of the outer pipe is pivotally connected to the left and right sides of the bottom of the chassis. The pipe sleeve is fixedly sleeved on the outer pipe on the side close to the chassis. One end of the pipe sleeve is connected to the cloth bag. The inner pipe is slidably arranged in the outer pipe. The outer end of the inner pipe is pivotally connected to the lower connecting block of the side wall assembly. A locking mechanism is arranged between the outer pipe and the inner pipe.

10. The folding camp cart according to claim 9, wherein: The locking mechanism includes a V-shaped or U-shaped elastic piece. The elastic piece is inserted through the side of the inner pipe close to the chassis. A buckle protrudes from the bottom of the elastic piece. A through hole for the buckle to protrude is arranged on the side wall of the inner pipe. A positioning hole for the buckle to protrude is arranged on the side wall of the outer pipe. The inner pipe and the outer pipe are locked and connected through the buckle on the elastic piece. The pipe sleeve is divided into a fixed part and a connecting part. A positioning block protrudes from the fixed part. A corresponding card slot is arranged on the side wall of the outer pipe. The fixed part is sleeved on the outer pipe and fixed through the cooperation of the positioning block and the card slot. The connecting part is sleeved at the position corresponding to the elastic piece. The upper end of the connecting part is connected to the cloth bag. A connecting piece is arranged on the lower side of the connecting part and connected to the fixed part. A convex point corresponding to the buckle is arranged at the position of the connecting piece corresponding to the positioning hole of the outer pipe. When the vehicle frame is folded up, the chassis drives the outer pipe to move upward, and the cloth bag drives the pipe sleeve to move upward. The convex point on the pipe sleeve presses the buckle to release the lock between the inner pipe and the outer pipe, and the inner pipe slides out along the outer pipe.

11. The folding camp cart according to claim 4 or 5, characterized in that: The pull rod assembly includes a sliding sleeve, an outer connecting pipe, an inner connecting pipe and a pull handle. The pull handle is fixed at the top of the inner connecting pipe. The sliding sleeve is slidably sleeved on the outer connecting pipe. The left and right ends of the sliding sleeve are pivotally connected to the second fixing block through connecting pipes. A support pipe is pivotally connected between the bottom of the outer connecting pipe and the middle part of the connecting pipe. The inner connecting pipe is slidably arranged in the outer connecting pipe. A positioning mechanism is arranged between the inner connecting pipe and the outer connecting pipe.

12. The folding camp cart according to any one of claims 1 to 10, characterized in that: Among the casters, the front two are universal wheels and the rear two are directional wheels. The cloth bag is detachably arranged on the vehicle frame and is detachably fixed to the top of the vertical pipe.

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