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 invention belongs to the technical field of outdoor products and relates to a camping vehicle, in particular to a folding camping vehicle. Background Art

[0002] Camping cars are one of the most practical equipment for outdoor camping. They are mainly used in outdoor places such as squares, beaches, parks and courtyards. In addition to loading materials needed for camping, they can also be used to load express delivery, take children out for a walk, or even move, set up stalls, and any other scenes that require moving items, making it convenient for people to move a large amount of activity materials. Camping cars are generally composed of four parts: traction, storage, load-bearing, and movement. In order to facilitate storage and carrying, existing camping cars are generally designed to be foldable, but the operation is not convenient enough and needs further improvement.

[0003] After investigation, the existing Chinese patent number CN202221606025.2, "A Folding Handcart", includes a hand-pulled rod and a frame, wheels are arranged under the frame, the frame includes a bottom frame side and an upper frame side, the bottom frame side and the upper frame side are connected by a vertical rod, an intermediate rod is arranged in the middle of the bottom frame side, and folding mechanisms for folding are arranged at both ends of the intermediate rod. The handcart can be folded conveniently to meet the use requirements, but there are also problems of inconvenient operation, and the volume is not small enough after folding. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a foldable camping vehicle with a simple and reasonable structure, flexible and convenient operation and a small size after folding, in view of the above technical status quo.

[0005] The technical solution adopted by the present invention to solve the above technical problems is: a foldable camping vehicle, including a pull rod assembly, a frame, casters and a cloth bag, characterized in that: the frame includes foldable front and rear brackets, a side panel assembly and a chassis assembly, the front and rear brackets are arranged opposite to each other at front and rear ends, the front bracket and the rear bracket respectively include two vertical pipes arranged on the left and right, the vertical pipes arranged on the left and right are foldably connected together by at least two groups of cross pipes arranged on the left and right and cross-pivoted, the chassis assembly includes a chassis, the four corner edges of the chassis are respectively pivoted with chassis pipes, the other ends of the chassis pipes are respectively pivoted with the lower ends of the vertical pipes, the side panel assemblies are arranged opposite to each other on the left and right, the front and rear ends of the side panel assemblies are respectively pivoted with the vertical pipes of the front and rear brackets, a connecting pipe assembly is arranged between the side panel assembly and the chassis assembly, and the side panel assembly is driven by the connecting pipe assembly to be synchronously unfolded and folded with the unfolding and folding of the chassis assembly, there are four casters, which are respectively installed under the four vertical pipes, and the pull rod assembly is installed in the middle position of the front bracket.

[0006] Furthermore, a first fixed block and a sliding block are sequentially provided on the riser, wherein the first fixed block is fixedly arranged on the upper part of the riser, and the sliding block is slidably mounted on the riser up and down, and a group of cross tubes is formed by cross-connecting two tubes, the outer ends of the two tubes are respectively pivotally connected to the first fixed block and the sliding block, and the inner ends are respectively pivotally connected to two tubes of another group of cross tubes.

[0007] Furthermore, the front bracket is also provided with a connecting block at the pivotal position above the left and right cross tubes arranged, and the connecting block serves as a common pivot point for the left and right parallel cross tubes to increase the strength of the bracket. At the same time, a bayonet is arranged in front of the connecting block to cooperate with the pull rod assembly.

[0008] Furthermore, the pull rod assembly is covered with a sliding sleeve that can slide up and down, and a second fixed block is fixedly installed at the lower end of the vertical pipe. The left and right ends of the sliding sleeve are pivotally connected to the rotating component on the second fixed block through a connecting pipe. The rotating component is connected to the second fixed block so that it can rotate forward and backward. A support tube is pivotally connected between the bottom of the pull rod assembly and the middle of the connecting pipe.

[0009] Furthermore, a second fixing block is fixedly sleeved at the lower end of the riser, and a U-shaped connecting seat with an opening facing upward is protruded from the second fixing block on one side relative to the chassis. U-shaped mounting seats with an opening facing downward for mounting one end of a chassis tube and limiting rotation are provided at the four corners of the lower end surface of the chassis. One end of the chassis tube is inserted into the U-shaped mounting seat and rotatably connected to the chassis through a rotating pin, and the other end of the chassis tube is inserted into the U-shaped connecting seat of the second fixing block at the lower end of the riser and is pivotally connected to the second fixing block through a connecting pin.

[0010] Furthermore, the side enclosure assembly is arranged opposite to each other on the left and right, and includes two long tubes, two short tubes and two branch tubes. The upper ends of the two long tubes are respectively pivotally connected to the upper connecting blocks, and the lower ends are respectively pivotally connected to the sliding blocks on the vertical tubes. The lower ends of the two short tubes are respectively pivotally connected to the lower connecting blocks, and the upper ends are pivotally connected to the upper connecting holes of the long tubes. The short tubes are slidably sleeved with oblique connecting blocks. The upper ends of the two branch tubes are respectively pivotally connected to the first fixed block, and the lower ends are pivotally connected to the oblique connecting blocks. The middle parts of the branch tubes are pivotally connected to the lower connecting holes of the long tubes.

[0011] Furthermore, the connecting pipe assembly includes three connecting pipes, wherein 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 panel 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, and the other end of the third connecting pipe is pivotally connected to the middle part of the first connecting pipe, and the length of the first connecting pipe is greater than the length of the third connecting pipe and the length of the second connecting pipe.

[0012] Furthermore, the connecting pipe assembly includes a flexible connecting member, both ends of which are pivotally connected to the lower connecting blocks of the left and right side enclosure assemblies respectively, and the middle portion of the flexible connecting member is connected to the lower end of the chassis via a short connecting pipe.

[0013] Furthermore, the connecting tube assembly adopts two groups of telescopic tube structures arranged symmetrically on the left and right, and each group of telescopic tube structures includes a tube sleeve, an outer tube and an inner tube, wherein one end of the outer tube is pivotally connected to the left and right sides of the bottom of the chassis, the tube sleeve is fixedly sleeved on the side of the outer tube close to the chassis, one end of the tube sleeve is connected to the cloth pocket, the inner tube is slidably arranged in the outer tube, the outer end of the inner tube is pivotally connected to the lower connecting block of the side panel assembly, and a locking mechanism is provided between the outer tube and the inner tube.

[0014] Furthermore, the locking mechanism includes a V-shaped or U-shaped spring piece, which is inserted into a side of the inner tube close to the chassis, a buckle is convexly provided at the bottom of the spring piece, a through hole is provided on the side wall of the inner tube for the buckle to extend out, and a positioning hole is provided on the side wall of the outer tube for the buckle to extend out, and the inner tube and the outer tube are locked and connected by the buckle on the spring piece; the tube sleeve is divided into a fixing part and a connecting part, a positioning block is convexly provided on the fixing part, and a corresponding slot is provided on the side wall of the outer tube, the fixing part is sleeved on the outer tube and fixed by the positioning block and the slot, the connecting part is sleeved at a position corresponding to the spring piece, the upper end of the connecting part is connected to the cloth bag, and a connecting piece is provided on the lower side of the connecting part to connect with the fixing part, and a convex point corresponding to the buckle is provided at the position of the connecting piece corresponding to the positioning hole of the outer tube. When the frame is folded, the chassis drives the outer tube to move upward, the cloth bag drives the tube sleeve to move upward, the convex point on the tube sleeve squeezes the buckle to release the locking of the inner tube and the outer tube, and the inner tube slides out along the outer tube.

[0015] Furthermore, the pull rod assembly includes a sliding sleeve, an external tube, an internal tube and a handle, wherein the handle is fixed on the top of the internal tube, the sliding sleeve can be slidably mounted on the external tube, the left and right ends of the sliding sleeve are pivotally connected to the second fixed block through the tube, a support tube is pivotally connected between the bottom of the external tube and the middle of the tube, the internal tube is slidably arranged in the external tube, and a positioning mechanism is provided between the internal tube and the external tube.

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

[0017] Compared with the prior art, the advantages of the present invention are: the front and rear brackets, the side enclosure assembly and the chassis assembly are all foldable, convenient to fold, and small in size after folding; the connecting pipe assembly between the side enclosure assembly and the chassis assembly has a simple structure, which can realize the synchronous unfolding and folding of the side enclosure assembly with the unfolding and folding of the chassis assembly; the inner and outer pipes of the pull rod assembly are retractable, and the positioning is convenient and firm. The present invention has a simple and reasonable structure, is flexible and convenient to operate, has a small size after folding, is easy to store and carry, and realizes small-size packaging while meeting the requirements of large volume and high structural strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0019] Figure 2 for Figure 1 Front view of

[0020] Figure 3 for Figure 1 Bottom view of

[0021] Figure 4 This is a structural schematic diagram of another angle of Embodiment 1 of the present invention;

[0022] Figure 5 It is a structural schematic diagram of the connecting pipe assembly in Example 1 when the vehicle is in an unfolded state;

[0023] Figure 6 It is a schematic diagram of the structure of Embodiment 1 of the present invention in a top view;

[0024] Figure 7 for Figure 1 Schematic diagram of the structure in the folded state;

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

[0026] Fig. 9 It is a schematic structural perspective view of Embodiment 1 of the present invention;

[0027] Fig.10 It is a three-dimensional schematic diagram of the local structure of Example 1 of the present invention.

[0028] Fig.11 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0029] Fig.12 for Fig.11 A schematic diagram of the structure of the middle connecting pipe assembly;

[0030] Fig.13 This is a structural schematic diagram of another angle of Example 2;

[0031] Fig.14 This is a schematic diagram of the structure of Example 2 in a folded state;

[0032] Fig.15 This is a schematic diagram of the structure of the connecting pipe assembly of Example 2 when the vehicle is in a folded state;

[0033] Fig.16 This is a schematic diagram of the structure of Embodiment 3 of the present invention;

[0034] Fig.17 for Fig.11 A schematic diagram of the structure of the middle connecting pipe assembly;

[0035] Fig.18This is a structural schematic diagram of another angle of Example 3;

[0036] Fig.19 This is a schematic diagram of the structure of Example 3 in a folded state;

[0037] Fig. 20 This is a schematic diagram of the structure of the connecting pipe assembly of Example 3 when the vehicle is in a folded state;

[0038] Fig.21 for Fig.17 sectional view of . DETAILED DESCRIPTION

[0039] The present invention is further described in detail below with reference to the accompanying drawings.

[0040] Example 1

[0041] like Figures 1 to 10 As shown, a foldable camping vehicle 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 a rear bracket 1', a side panel assembly 2 and a chassis assembly 3. The front bracket 1 and the rear bracket 1' are usually arranged front and back relative to each other. The left and right sides of the front bracket 1 and the rear bracket 1' have respective fixed blocks 12 and sliding blocks 13, that is, the left and right vertical tubes 11 are both provided with fixed blocks 12 and sliding blocks 13. The two left and right vertical tubes 11 are foldably connected together by at least two groups of cross tubes 15 that are parallel to each other and cross-pivoted. The chassis assembly 3 includes A chassis 31, the four corner edges of the chassis 31 are pivotally connected with chassis tubes 32, the other ends of the chassis tubes 32 are pivotally connected to the lower ends of the vertical tubes 11, two side panel assemblies 2 are symmetrically arranged on the left and right, the front and rear ends of the side panel assemblies 2 are pivotally connected to the vertical tubes 11 of the front bracket 1 and the rear bracket 1', a connecting pipe assembly 4 is provided between the side panel assembly 2 and the chassis 3, and the side panel 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 under the four front, rear, left and right vertical tubes 11, and the pull rod assembly 5 is installed in the middle position of the front bracket 1.

[0042] The specific structure is: Figures 1 to 4Each vertical tube 11 is provided with a first fixed block 12 and a sliding block 13 in sequence, wherein the first fixed block 12 is fixedly arranged on the upper part of the vertical tube 11, and the sliding block 13 can be slidably sleeved on the vertical tube 11 up and down. A group of cross tubes 15 is formed by cross-connecting two tubes 15a, and the outer ends of the two tubes 15a are respectively pivoted with the first fixed block 12 and the sliding block 13, and the inner ends are respectively pivoted with the two tubes 15a of another group of cross tubes 15, so as to form two groups of cross tubes 15 that are parallel to each other and cross-pivoted. Because of the need for folding adjustment, the left and right vertical tubes 15 are The first fixed block 12 on 1 is stationary and maintained at substantially the same height, while the sliding block 13 can move up and down, thus constituting a basic folding mechanism of the front bracket 1 and the rear bracket 1'. Because a pull rod assembly 5 is also provided on the front bracket 1, a connecting block 16 is also provided at the pivotal position of the left and right parallel cross tubes 15 on the front bracket 1. The connecting block 16 can serve as a common pivot point for the left and right parallel cross tubes 15 to increase the strength of the bracket. At the same time, a bayonet 18 is arranged in front of the connecting block 16 to cooperate with the pull rod assembly 5 for clamping. In order to increase the strength of the front bracket 1 and facilitate the flipping of the tie rod assembly 5, a sliding sleeve 54 that can slide up and down is sleeved on the tie rod assembly 5, and a second fixed block 14 is fixedly installed at the lower end of each vertical pipe 11. The left and right ends of the sliding sleeve 54 are pivotally connected to the rotating component 17 on the second fixed block 14 through a connecting pipe 55. The rotating component 17 is connected to the second fixed block 14 so that it can rotate forward and backward. A support pipe 56 is pivotally connected between the bottom of the tie rod assembly 5 and the middle of the connecting pipe 55, thus forming a complete front bracket 1 structure. A second fixing block 14 is fixedly installed at the lower end of each vertical pipe 11. The second fixing block 14 is provided with a U-shaped connecting seat 14a with an opening facing upward on one side relative to the chassis 31. The four corners of the lower end surface of the chassis 31 are provided with U-shaped mounting seats 31a with an opening facing downward for mounting and limiting rotation of one end of the chassis tube 32. One end of the chassis tube 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 tube 32 is inserted into the U-shaped connecting seat 14a of the second fixing block 14 at the lower end of the vertical pipe 11 and is pivotally connected to the second fixing block 14 through a connecting pin.

[0043] like Figure 2The side panel 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 pivoted to the upper connection blocks 24, and the lower ends are respectively pivoted to the sliding blocks 13 on the vertical tube 11. The lower ends of the two short tubes 22 are respectively pivoted to the lower connection blocks 25, and the upper ends are pivoted to the upper connection holes of the long tubes 21. The short tubes 22 are slidably sleeved with oblique connection blocks 26. The upper ends of the two branch tubes 23 are respectively pivoted to the first fixed block 12, and the lower ends are pivoted to the oblique connection blocks 26. The middle part of the branch tubes 23 is pivoted to the lower connection holes of the long tubes 21. When the frame is folded, the sliding block 13 slides downward along the vertical tube 11 and the oblique connection block 26 slides downward along the short tubes 22. When the frame is opened, the sliding block 13 slides upward along the vertical tube 11 and the oblique connection block 26 slides upward along the short tubes 22.

[0044] like Figures 6 to 9 The connecting pipe assembly 4 includes three connecting pipes, wherein one end of the first connecting pipe 41 and the third connecting pipe 43 are pivotally connected to the lower connecting blocks 25 of the left and right side enclosure assemblies 2 respectively, the other end of the first connecting pipe 41 is pivotally connected to the second connecting pipe 42, the other end of the second connecting pipe 42 is pivotally connected to the lower end of the chassis 31, and the other end of the third connecting pipe 43 is pivotally connected to the middle part of the first connecting pipe 41. The length of the first connecting pipe 41 is greater than the length of the third connecting pipe 43 and the length of the second connecting pipe 42. When the frame is unfolded, the second connecting pipe 42 is just placed above the third connecting pipe 43.

[0045] like Figure 4 , 10 The pull rod assembly 5 includes a sleeve 54, an outer tube 53, an inner tube 52 and a handle 51, wherein the handle 51 is fixed to the top of the inner tube 52, the sleeve 54 is slidably sleeved on the outer tube 53, the left and right ends of the sleeve 54 are pivotally connected to the rotating component 17 on the second fixed block 14 through the tube 55, a support tube 56 is pivotally connected between the bottom of the outer tube 53 and the middle of the tube 55, the inner tube 52 is slidably set in the outer tube 53, and a positioning mechanism is provided between the inner tube 52 and the outer tube 53. The positioning mechanism is consistent with the prior art and will not be described in detail here.

[0046] The front two casters 6 are universal wheels, and the rear two casters are fixed wheels. The cloth bag 200 is detachably arranged on the frame and detachably fixed to the top of the vertical pipe 11, and can usually be connected by a sleeve, a tether, a hook, etc.

[0047] When in use, pull the four vertical tubes 11 front and back and left and right to squeeze, so that the front and rear brackets 1, 1', left and right side enclosure components 2 are unfolded as the chassis component 3 is unfolded, and then the pull rod assembly 5 is disengaged from the connecting block 16, so that the pull rod assembly 5 forms a suitable pulling angle with the second fixed block 14 through the rotating component 17, and the foldable camping vehicle can be pulled or pushed forward and backward. When folding, shake the pull rod assembly 5 backward and engage it with the connecting block 16 again, and then, squeeze the four vertical tubes 11 front and back and left and right to make the front and rear brackets 1, 1', left and right side enclosure components 2 folded again as the chassis component 3 is folded.

[0048] This embodiment explains in detail the use of two groups of cross tubes 15 that are arranged side by side and cross-pivoted in the front bracket 1 and the rear bracket 1'. For practical needs, four groups of cross tubes 15 that are cross-pivoted can also be used. The left and right groups can be arranged side by side to obtain a similar effect, that is, the frame height will be higher.

[0049] Example 2

[0050] like Figures 11 to 15 As shown, a foldable camping vehicle is different from the embodiment 1 in that the connecting pipe assembly 4 is different. The connecting pipe assembly 4 of this embodiment includes a flexible connector 4a, and the two ends of the flexible connector 4a are respectively pivotally connected to the lower connecting blocks 25 of the left and right side enclosure assemblies 2, and the middle of the flexible connector 4a is connected to the lower end of the chassis 31 through a short pipe 4b. When the vehicle is folded, the chassis 31 drives the short pipe 4b to move upward, the flexible connector 4a is folded, and the side enclosure assemblies 2 are folded. When the vehicle is opened, the flexible connector 4a is unfolded.

[0051] Example 3

[0052] like Figures 16 to 21 As shown, a foldable camping vehicle is different from Example 1 in that the connecting pipe assembly 4 is different. The connecting pipe assembly 4 of this embodiment adopts two groups of telescopic pipe structures arranged symmetrically on the left and right sides, and each group of telescopic pipe structures includes a pipe sleeve 4A, an outer pipe 4B and an inner pipe 4C, wherein 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 on the side of the outer pipe 4B close to the chassis 31, one end of the pipe sleeve 4A is connected to the cloth bag, the inner pipe 4C is slidably arranged in the outer pipe 4B, the outer end of the inner pipe 4C is pivotally connected to the lower connecting block 25 of the side enclosure assembly 2, and a locking mechanism is provided between the outer pipe 4B and the inner pipe 4C.

[0053] The locking mechanism includes a V-shaped spring piece 40, which is inserted into a side of the inner tube 4C close to the chassis 31. A buckle 401 is protruding from the bottom of the spring piece 40. A through hole is provided on the side wall of the inner tube 4C for the buckle 401 to extend out. A positioning hole is provided on the side wall of the outer tube 4B for the buckle 401 to extend out. The inner tube 4C and the outer tube 4B are locked and connected by the buckle 401 on the spring piece 40. The pipe sleeve 4A is divided into two parts: a fixing part 4A3 and a connecting part 4A4. A positioning block 4A2 is convexly provided on the fixing part 4A3, and a corresponding groove is opened on the side wall of the outer tube 4B. The fixing part 4A3 is sleeved on the outer tube 4B and fixed by the positioning block 4A2 and the groove. The connecting part 4A4 is sleeved at a position corresponding to the spring 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 convex point 4A1 corresponding to the buckle 401 is provided at the position of the connecting piece 4A5 corresponding to the positioning hole of the outer tube 4B. When the frame is folded, the chassis 31 drives the outer tube 4B to move upward, and the cloth bag drives the pipe sleeve 4A to move upward. The convex point 4A1 on the pipe sleeve 4A squeezes 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, and the protrusion 4A1 pops out from the positioning hole of the outer tube 4B. When the inner tube 4C is inserted into place, the buckle 401 pops out to lock the outer tube 4B and the inner tube 4C.

[0054] In this way, the frame can be folded forward, backward, left and right, which is flexible and convenient to operate and use. The size is smaller after folding, and the packaging is minimized for easy storage and carrying. It achieves small-size packaging while meeting the requirements of large volume and high structural strength.

[0055] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A foldable camping vehicle, comprising a pull rod assembly, a frame, casters and a cloth bag, characterized in that: The frame includes foldable front and rear brackets, side panel assemblies and a chassis assembly. The front and rear brackets are arranged relative to each other in front and back. The front bracket and the rear bracket respectively include two vertical tubes arranged on the left and right. The vertical tubes arranged on the left and right are foldably connected together by at least two groups of cross tubes arranged on the left and right and cross-pivoted. The chassis assembly includes a chassis. The four corner edges of the chassis are respectively pivoted with chassis tubes, and the other ends of the chassis tubes are respectively pivoted with the lower ends of the vertical tubes. There are two side panel assemblies arranged relative to each other in the left and right. The front and rear ends of the side panel assemblies are respectively pivoted with the vertical tubes of the front and rear brackets. A connecting tube assembly is provided between the side panel assembly and the chassis assembly. The side panel assembly is driven by the connecting tube assembly to be synchronously unfolded and folded as the chassis assembly is unfolded and folded. There are four casters, which are respectively installed under the four vertical tubes. The pull rod assembly is installed in the middle position of the front bracket.

2. The foldable camping vehicle according to claim 1, characterized in that: The vertical pipe is provided with a first fixed block and a sliding block in sequence, wherein the first fixed block is fixedly arranged on the upper part of the vertical pipe, and the sliding block is slidably mounted on the vertical pipe up and down, and a group of cross pipes is formed by cross-connecting two pipes, the outer ends of the two pipes are respectively pivotally connected to the first fixed block and the sliding block, and the inner ends are respectively pivotally connected to two pipes of another group of cross pipes.

3. The foldable camping vehicle according to claim 2, characterized in that: The front bracket is also provided with a connecting block at the pivotal position above the left and right cross tubes, and the connecting block serves as a common pivot point for the left and right parallel cross tubes to increase the strength of the bracket. At the same time, a bayonet is arranged in front of the connecting block to cooperate with the pull rod assembly.

4. The foldable camping vehicle according to claim 3, characterized in that: The pull rod assembly is covered with a sliding sleeve that can slide up and down, and a second fixed block is fixedly installed at the lower end of the vertical pipe. The left and right ends of the sliding sleeve are pivotally connected to the rotating component on the second fixed block through a connecting pipe. The rotating component is connected to the second fixed block so that it can rotate forward and backward. A support tube is pivotally connected between the bottom of the pull rod assembly and the middle of the connecting pipe.

5. The foldable camping vehicle according to claim 1, characterized in that: The lower end of the vertical pipe is fixedly sleeved with a second fixing block, and the second fixing block is protruding with a U-shaped connecting seat with an opening facing upward on one side relative to the chassis. The four corners of the lower end surface of the chassis are provided with U-shaped mounting seats with an opening facing downward for mounting one end of the chassis tube and limiting rotation. One end of the chassis tube is inserted in the U-shaped mounting seat and is rotatably connected to the chassis through a rotating pin, and the other end of the chassis tube is inserted in 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 foldable camping vehicle according to claim 1, characterized in that: The side enclosure assembly is arranged opposite to each other on the left and right, and includes two long tubes, two short tubes and two branch tubes. The upper ends of the two long tubes are respectively pivotally connected to the upper connecting blocks, and the lower ends are respectively pivotally connected to the sliding blocks on the vertical tubes. The lower ends of the two short tubes are respectively pivotally connected to the lower connecting blocks, and the upper ends are pivotally connected to the upper connecting holes of the long tubes. The short tubes are slidably sleeved with oblique connecting blocks. The upper ends of the two branch tubes are respectively pivotally connected to the first fixed blocks, and the lower ends are pivotally connected to the oblique connecting blocks. The middle parts of the branch tubes are pivotally connected to the lower connecting holes of the long tubes.

7. The foldable camping vehicle according to claim 6, characterized in that: The connecting pipe assembly includes three connecting pipes, wherein 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 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, and the other end of the third connecting pipe is pivotally connected to the middle part of the first connecting pipe, and the length of the first connecting pipe is greater than the length of the third connecting pipe and the length of the second connecting pipe.

8. The foldable camping vehicle according to claim 6, characterized in that: The connecting pipe assembly includes a flexible connecting piece, the two ends of which are respectively pivotally connected to the lower connecting blocks of the left and right side enclosure assemblies, and the middle part of the flexible connecting piece is connected to the lower end of the chassis through a short connecting pipe.

9. The foldable camping vehicle according to claim 6, characterized in that: The connecting pipe assembly adopts two groups of telescopic pipe structures arranged symmetrically on the left and right, and each group of telescopic pipe structures includes a pipe sleeve, an outer pipe and an inner pipe, wherein 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 side of the outer pipe 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 panel assembly, and a locking mechanism is provided between the outer pipe and the inner pipe.

10. The foldable camping vehicle according to claim 9, characterized in that: The locking mechanism comprises a V-shaped or U-shaped spring piece, which is penetrated on a side of the inner tube close to the chassis, a buckle is convexly provided at the bottom of the spring piece, a through hole is provided on the side wall of the inner tube for the buckle to extend out, and a positioning hole is provided on the side wall of the outer tube for the buckle to extend out, and the inner tube and the outer tube are locked and connected by the buckle on the spring piece; the tube sleeve is divided into a fixing part and a connecting part, a positioning block is convexly provided on the fixing part, and a corresponding slot is provided on the side wall of the outer tube, the fixing part is sleeved on the outer tube and fixed by the positioning block and the slot, the connecting part is sleeved at a position corresponding to the spring piece, 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 fixing part, and a convex point corresponding to the buckle is provided at a position of the connecting piece corresponding to the positioning hole of the outer tube. When the frame is folded, the chassis drives the outer tube to move upward, the cloth pocket drives the tube sleeve to move upward, the convex point on the tube sleeve squeezes the buckle to release the locking of the inner tube and the outer tube, and the inner tube slides out along the outer tube.

11. The foldable camping vehicle according to claim 4 or 5, characterized in that: The pull rod assembly includes a sliding sleeve, an external tube, an internal tube and a handle, wherein the handle is fixed on the top of the internal tube, the sliding sleeve can be slidably mounted on the external tube, the left and right ends of the sliding sleeve are pivotally connected to the second fixed block through the tube, a support tube is pivotally connected between the bottom of the external tube and the middle of the tube, the internal tube is slidably arranged in the external tube, and a positioning mechanism is provided between the internal tube and the external tube.

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

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