Portable foldable multifunctional camping car

Abstract

The invention discloses a portable foldable multifunctional camping car, and belongs to the technical field of camping cars. Comprising a bottom frame, a side frame, a top frame, a universal wheel, a turnover frame, a lifting mechanism, a lifting mechanism, a lifting mechanism and a lifting mechanism, wherein the lifting mechanism is fixedly arranged at the opposite end of the bottom frame and fixedly provided with a side baffle; the top frame is fixed to the end, away from the bottom frame, of the side frame; the turnover frame is fixed to the side, away from the top frame, of the bottom frame; the end, close to the top frame, of the overturning frame is hinged to the side frame, and the end, away from the top frame, of the overturning frame is detachably and fixedly connected with the side frame. Sundries can be stacked in the rectangular frame to be used as a camping car, the turnover frame can be turned over along the hinged position to be perpendicular to the side frame, then the composite board is taken out of the rectangular frame and unfolded to be placed on the top frame and the turnover frame, and the range of the composite board can be used as a dining table. Therefore, the usable range of the camping car is greatly widened.

Description

Technical Field

[0001] This invention relates to a portable, foldable, multi-functional camping vehicle, belonging to the field of camping vehicle technology. Background Technology

[0002] Folding campervans, with their foldable design, large carrying capacity, and ease of use, have become indispensable tools for transporting products in factories and for people engaging in outdoor camping activities. They allow for the easy transfer of large quantities of products to the next production line, or the transport of large amounts of camping gear to grassy areas, beaches, or other campsites where motor vehicles cannot easily access.

[0003] Conventional campervans have limited functionality and can only be used as cargo vehicles, failing to meet the diverse needs of camping scenarios, thus presenting certain problems. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a portable, foldable, multi-functional camping vehicle, which solves the problem that conventional camping vehicles in the prior art have only one function and can only be used as cargo vehicles, and cannot meet the diverse needs of camping scenarios.

[0005] The technical problem to be solved by this invention is achieved by the following technical solution: a portable, foldable, multi-functional camping vehicle, comprising: Bottom frame, The side frame is fixedly installed at the opposite end of the bottom frame, and side baffles are fixedly installed on the side frame. The top frame is fixed to the side frame at the end furthest from the bottom frame. The casters are fixed to the bottom frame on the side away from the top frame. A flip-up frame is located on the side of the side frame away from the bottom frame. The end of the flip-up frame near the top frame is hinged to the side frame, while the end of the flip-up frame away from the top frame is detachably and fixedly connected to the side frame. The support section is located at the hinge joint between the flip frame and the side frame. The support section provides support for the flip frame and the side frame at the included angle. The bottom frame, side frame and top frame are combined to form a rectangular frame. Composite panels are placed inside the side panels. The composite panels and side panels together enclose the rectangular frame except for the top.

[0006] By adopting the above technical solution, when in use, debris can be piled up inside the rectangular frame, and the side panels and composite panels will block the debris from falling out of the campervan. When the campervan needs to be unfolded for use as a table, all the debris is first removed. Then, the flip frame is flipped along the hinge to make it perpendicular to the side frame. At this time, the flip frame is coplanar with the top frame, and the support is used to support the flip frame. At this time, the flip frame can maintain a perpendicular state to the side frame for a long time. Then, the composite panel is taken out from the rectangular frame, unfolded, and placed on the top frame and the flip frame. At this time, the area of ​​the composite panel can be used as a dining table, which greatly improves the usability of the campervan.

[0007] The present invention is further configured such that: a lower auxiliary frame protruding toward the top frame is provided in the middle of the bottom frame, and an upper auxiliary frame protruding toward the bottom frame is provided in the middle of the top frame.

[0008] By adopting the above technical solution, and by setting a lower auxiliary frame and an upper auxiliary frame on the bottom frame and the top frame respectively, the composite panel can be prevented from coming off between the bottom frame and the top frame by abutting, which improves the stability of the composite panel when placing sundries in the campervan. It also allows users to directly take the composite panel through the upper auxiliary frame, which improves the user's ease of operation.

[0009] The invention is further configured such that: the end of the flip frame away from the top frame is provided with a bolt hole that passes through the side frame, and a bolt is threaded into the bolt hole, the bolt passing through the flip frame and threadedly connected to the bolt hole located on the side frame.

[0010] The invention is further configured such that a pull rod is hinged to one side of the flip frame away from the top frame.

[0011] The present invention is further configured such that the support portion includes: Storage compartments are located on the opposite sides of the side frame and the flip frame. The main support rod is hinged at one end to the inner wall of the storage slot located on the side frame. The secondary support rod is hinged at one end to the inner wall of the storage slot on the flip frame, and the opposite ends of the main support rod and the secondary support rod are hinged to each other. The connecting component is located inside the main support rod. The abutment block is located on the side of the main support rod facing the secondary support rod, and is connected to the main support rod via a connecting assembly. The abutment groove is located on the side of the secondary support rod facing the main support rod. The abutting block bends toward the abutting groove and extends into the abutting groove, and the inner wall of the abutting groove can abut against the abutting block.

[0012] The present invention is further configured such that the connecting component includes: The release chamber is located at the end of the main support rod. The shear plate is hinged at one end inside the release chamber, and the other end is fixed to the abutment block. The axial direction of the shear plate's hinge axis is the same as the axial direction of the hinge axes of the main support rod and the secondary support rod. The limiting channel is located inside the release chamber and passes through the main support rod. A limit block is inserted into the limit channel and abuts against the shear plate, thereby limiting the movement of the shear plate by abutting against it.

[0013] By adopting the above technical solution, when the flipping frame is unfolded, the main support rod and the secondary support rod flip out from the storage slot. The main support rod and the secondary support rod flip along the hinge with the storage slot, and finally flip until the abutment block abuts against the inner wall of the abutment slot. At this time, due to the abutment block abutting against the abutment slot, the main support rod and the secondary support rod cannot flip further. At this time, the force on the flipping frame is transmitted to the side frame in sequence through the secondary support rod and the main support rod, so as to achieve the purpose of supporting the flipping frame.

[0014] The invention is further configured such that: an expansion block is fixedly installed on the outer side of the main support rod, an inflation chamber is opened in the expansion block, a flexible expansion membrane is fixedly installed at the opening of the inflation chamber to seal the inflation chamber, an installation cavity is also provided in the expansion block with one side of the expansion block through it, an air storage block is inserted into the installation cavity, the air storage block is hollow to form an air storage cavity, the air storage cavity is filled with compressed gas, and an air guiding structure is provided in the main support rod to guide the gas in the air storage block into the inflation cavity.

[0015] The invention is further configured such that: an exhaust hole is provided at the end of the gas storage block inserted into the installation cavity; a rigid sealing plate is fixedly provided inside the exhaust hole to seal the exhaust hole; a connector is fixedly provided on the end wall of the installation cavity opposite to the exhaust hole and inserted into the exhaust hole; an exhaust channel communicating with the installation cavity is provided inside the connector; an assembly mesh plate is fixedly provided inside the exhaust channel; a pin that can be inserted into the exhaust hole and abut against the rigid sealing plate is fixedly provided on the assembly mesh plate; and the exhaust channel is connected to the air guiding structure.

[0016] The invention is further configured such that: the air guiding structure includes an air intake channel disposed within the main support rod and communicating with the inflation chamber; an intermediate channel is disposed between the air intake channel and the exhaust channel; a sliding cavity is provided laterally in the intermediate channel; a sliding block is slidably disposed within the sliding cavity; two blocking posts are fixedly disposed on the side of the sliding block facing the air intake channel and respectively inserted into the exhaust channel and the air intake channel; conduction holes are provided in the two blocking posts and respectively communicating with the exhaust channel and the air intake channel; a communication port is provided in the conduction holes and can communicate with the intermediate channel; a pressure spring is fixedly disposed on the end face of the sliding block away from the blocking posts and abuts against the inner wall of the sliding cavity; a pull rope is fixedly disposed on the end face of the sliding block where the pressure spring is disposed, with its end extending into the release cavity and fixedly connected to the shear plate.

[0017] By adopting the above technical solution, when the main support rod and the auxiliary support rod provide support, since they are hinged together, they can only maintain stability by relying on the contact limit between the abutment block and the abutment groove. When the pressure on the flipping frame is too high, the force exerted by the abutment groove on the abutment block increases, thereby increasing the force transmitted from the abutment block to the shear plate for flipping. This causes the shear plate and the inner wall of the release chamber to work together to form a shearing force on the limiting block, thus cutting off the limiting block. At this time, the shear plate flips along the hinge, causing the abutment block to flip further with the shear plate, allowing the main support rod and the auxiliary support rod to continue relative movement. At this time, the pull rope changes from a taut state to a slack state, and the elastic force of the pressure spring pushes the sliding block to move in the sliding cavity. The blocking post slides within the air intake and exhaust channels, aligning the middle channel with the connecting port. At this point, the gas in the storage chamber flows through the exhaust channel into the middle channel and then into the air intake channel, ultimately increasing the air pressure in the inflation chamber. This causes the flexible expansion membrane to expand rapidly, locking it between the main support rod, the secondary support rod, the flipping frame, and the side frame, thus slowing down the further flipping of the main and secondary support rods and the flipping frame along the hinge. This prevents the flipping frame from rapidly flipping down and colliding with the side frame under the load when the contact between the contact block and the contact groove fails, thereby improving the service life of the side frame, the flipping frame, the main support rod, and the secondary support rod.

[0018] The beneficial effects of this invention are as follows: In use, debris can be piled up inside the rectangular frame, and the side panels and composite panels will block the debris from falling out of the campervan. When the campervan needs to be unfolded for use as a table, all the debris is first removed. Then, the flip frame is flipped along the hinge to make it perpendicular to the side frame. At this time, the flip frame is coplanar with the top frame, and the support part supports the flip frame. The flip frame can maintain a perpendicular state to the side frame for a long time. Then, the composite panel is taken out from the rectangular frame, unfolded, and placed on the top frame and the flip frame. The area of ​​the composite panel can then be used as a dining table, which greatly improves the usability of the campervan and can meet the different needs of users. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the structure of the table formed when the flip frame is perpendicular to the side frame in this invention; Figure 3 This is a schematic diagram of the support portion in this invention; Figure 4 This is a partial structural cross-sectional view of the connection between the main support rod and the abutment block in this invention; Figure 5 This is a partial structural cross-sectional view of the limiting block in this invention when it is being sheared. Figure 6 This is a diagram showing the positional relationship between the gas storage block and the mounting cavity in this invention; Figure 7 This is a partial structural cross-sectional view of the gas storage block after it has been inserted into the installation cavity in this invention.

[0020] In the diagram: 10. Bottom frame; 11. Lower auxiliary frame; 12. Side frame; 13. Casters; 14. Top frame; 15. Upper auxiliary frame; 16. Composite panel; 17. Flip frame; 18. Tie rod; 19. Side baffle; 20. Bolt hole; 21. Main support rod; 22. Secondary support rod; 23. Abutment groove; 24. Abutment block; 25. Expansion block; 26. Inflation chamber; 27. Flexible expansion membrane; 28. Mounting chamber; 29. ​​Air storage block; 30. Air storage chamber; 31. Exhaust port; 32. Rigid sealing plate; 33. Connecting joint; 34. Assembly mesh plate; 35. Ejector pin; 36. Exhaust channel; 37. Intake channel; 38. Intermediate channel; 39. Sliding chamber; 40. Sliding block; 41. Barrier post; 42. Conducting hole; 43. Connecting port; 44. Pressure spring; 45. Release chamber; 46. Shearing plate; 47. Limiting channel; 48. Limiting block; 49. Pull rope; 50. Storage slot. Detailed Implementation

[0021] To facilitate a clear understanding of the technical means, creative features, objectives, and effects of this invention, the invention will be further described below in conjunction with specific illustrations.

[0022] like Figure 1 and 2 As shown, a portable, foldable, multi-functional camping vehicle includes a bottom frame 10, side frames 12, casters 13, a top frame 14, a flip frame 17, and a support unit. The bottom frame 10 is rectangular, and several reinforcing rods for strengthening the structure are fixed to the inner side of the bottom frame 10. The side frames 12 are fixed at opposite ends of the bottom frame 10, and side panels 19 are fixedly installed on the side frames 12. The side frames 12 are U-shaped, and the horizontal portion of the U-shaped side frames 12 is fixed to the bottom frame 10. The top frame 14 is fixed at the end of the side frames 12 away from the bottom frame 10. The top frame 14 is also rectangular, and the plane of the top frame 14 is parallel to the bottom frame 10. The bottom frame 10 is fixed to the vertical end of the U-shaped side frames 12. The bottom frame 10, side frame 12, and top frame 14 combine to form a rectangular frame. A composite plate 16 is placed inside the side baffle 19. The composite plate 16 is a flexible, deformable plate formed by several rectangular pieces arranged side-by-side and hinged together, with a structure similar to that of a roller shutter door panel. The composite plate 16 and the side baffle 19 together enclose the rectangular frame except for the top. Several magnetic attracting pieces that can magnetically attract the composite plate 16 are also fixed to the top of the top frame 14. A caster wheel 13 is fixed to the side of the bottom frame 10 away from the top frame 14. The caster wheel 13 is a conventional caster wheel, directly fixed to the bottom frame 10 by installing conventional bolts or welding. A flip frame 17 is located on the side of the side frame 12 away from the bottom frame 10. The end of the flip frame 17 near the top frame 14 is hinged to the vertical ends of the side frame 12 in a U-shape. The end of the flip frame 17 away from the top frame 14 is detachably fixed to the side frame 12. A bolt hole 20 is provided through the end of the flip frame 17 away from the top frame 14, through which the side frame 12 passes. A bolt is threaded into the bolt hole 20, and the bolt passes through the flip frame 17 and is threaded into the bolt hole 20 on the side frame 12. A tie rod 18 is hinged to the side of the flip frame 17 away from the top frame 14. When the flip frame 17 is in a vertical state, the end of the tie rod 18 away from the hinge is higher than the top frame 14. A support is provided at the hinge between the flip frame 17 and the side frame 12, and the support is used to support the flip frame 17 and the side frame 12 at an angle.

[0023] like Figure 1As shown, a lower auxiliary frame 11 protruding towards the top frame 14 is provided in the middle of the bottom frame 10, and an upper auxiliary frame 15 protruding towards the bottom frame 10 is provided in the middle of the top frame 14. By providing the lower auxiliary frame 11 and the upper auxiliary frame 15 on the bottom frame 10 and the top frame 14 respectively, the composite panel 16 can be prevented from detaching from the bottom frame 10 and the top frame 14 by abutting, which improves the stability of the composite panel 16 when placing miscellaneous items in the campervan. It also allows the user to directly pick up the composite panel 16 through the upper auxiliary frame 15, which improves the user's ease of operation.

[0024] like Figure 2-4 As shown, the support part includes a main support rod 21, a secondary support rod 22, an abutment groove 23, an abutment block 24, a storage groove 50, and a connecting assembly. The storage grooves 50 are respectively opened on the opposite sides of the side frame 12 and the flip frame 17. One end of the main support rod 21 is hinged to the inner wall of the storage groove 50 located on the side frame 12, and one end of the secondary support rod 22 is hinged to the inner wall of the storage groove 50 located on the flip frame 17. The opposite ends of the main support rod 21 and the secondary support rod 22 are hinged to each other, and there is a gap between the main support rod 21 and the secondary support rod 22 along the hinge axis to avoid the main support rod 21 and the secondary support rod 22 forming a shear structure during the mutual flipping process. The connecting component is located inside the main support rod 21, and the abutment block 24 is located on the side of the main support rod 21 facing the secondary support rod 22. The abutment block 24 is connected to the main support rod 21 through the connecting component. The abutment groove 23 is located on the side of the secondary support rod 22 facing the main support rod 21. The abutment block 24 bends toward the abutment groove 23 and extends into the abutment groove 23. The inner wall of the abutment groove 23 can abut against the abutment block 24.

[0025] like Figure 4 and 5 As shown, the connecting assembly includes a release chamber 45, a shear plate 46, a limiting channel 47, and a limiting block 48. The release chamber 45 is located at the end of the main support rod 21. One end of the shear plate 46 is hinged inside the release chamber 45, and the other end of the shear plate 46 is fixed to the abutment block 24. The axial direction of the hinge axis of the shear plate 46 is the same as the axial direction of the hinge axes of the main support rod 21 and the secondary support rod 22. The limiting channel 47 is located inside the release chamber 45 and passes through the main support rod 21. The limiting block 48 is inserted into the limiting channel 47 and abuts against the shear plate 46. The limiting block 48 restricts the movement of the shear plate 46 by abutting. The material of the limiting block 48 includes, but is not limited to, hard rubber, aluminum, etc. When the limiting block 48 is damaged, it is removed from the release chamber 45, and then a new limiting block 48 is inserted into the release chamber 45 through the limiting channel 47 so that the limiting block 48 abuts against the shear plate 46 again.

[0026] like Figure 6 and 7As shown, an expansion block 25 is fixedly installed on the outer side of the main support rod 21. An inflation chamber 26 is opened inside the expansion block 25. One side of the inflation chamber 26 passes through the expansion block 25, and a flexible expansion membrane 27 is fixedly installed at the opening of the inflation chamber 26 to seal the inflation chamber 26. The flexible expansion membrane 27 can be made of rubber material. When the air pressure in the inflation chamber 26 increases, the flexible expansion membrane 27 expands outward. The flexible expansion membrane 27 can also be made of nylon material. When the flexible expansion membrane 27 is made of nylon material, polychloroprene should be coated on the outside of the flexible expansion membrane 27 to ensure sealing. At the same time, when the flexible expansion membrane 27 is not unfolded, it is hidden inside the inflation chamber 26. When the inflation chamber 26 is raised, the flexible expansion membrane 27 is inflated, causing the flexible expansion membrane 27 to expand out of the inflation chamber 26. The release chamber 45 has an opening facing the same direction as the inflation chamber 26. The expansion block 25 also has an installation chamber 28 that passes through the expansion block 25 on one side. An air storage block 29 is inserted into the installation chamber 28. The air storage block 29 is hollow and forms an air storage chamber 30. The air storage chamber 30 is filled with compressed gas. The main support rod 21 has an air guiding structure, which is used to guide the gas in the air storage block 29 into the inflation chamber 26.

[0027] like Figure 7 As shown, the end of the gas storage block 29 inserted into the mounting cavity 28 has an exhaust hole 31. A rigid sealing plate 32 is fixedly installed inside the exhaust hole 31 to seal the exhaust hole 31. A connector 33 is fixedly installed on the end wall of the mounting cavity 28 opposite to the exhaust hole 31 and inserted into the exhaust hole 31. An exhaust channel 36 communicating with the mounting cavity 28 is provided inside the connector 33. An assembly mesh plate 34 is fixedly installed inside the exhaust channel 36. A pin 35 that can be inserted into the exhaust hole 31 and abut against the rigid sealing plate 32 is fixedly installed on the assembly mesh plate 34. The exhaust channel 36 is connected to the air guiding structure.

[0028] like Figure 4 and 5 As shown, the air guiding structure includes an air intake channel 37 disposed within the main support rod 21 and connected to the inflation chamber 26. An intermediate channel 38 is provided between the air intake channel 37 and the exhaust channel 36. A sliding cavity 39 is provided on the side of the intermediate channel 38. A sliding block 40 is slidably disposed within the sliding cavity 39. Two blocking posts 41 are fixedly disposed on the side of the sliding block 40 facing the air intake channel 37 and are respectively inserted into the exhaust channel 36 and the air intake channel 37. Conducting holes 42 are provided in the two blocking posts 41 and are respectively connected to the exhaust channel 36 and the air intake channel 37. A connecting port 43 is provided in the conducting holes 42 and can be connected to the intermediate channel 38. A pressure spring 44 is fixedly disposed on the end face of the sliding block 40 away from the blocking posts 41 and abuts against the inner wall of the sliding cavity 39. A pull rope 49 is fixedly disposed on the end face of the sliding block 40 where the pressure spring 44 is disposed, with its end extending into the release cavity 45 and fixedly connected to the shear plate 46.

[0029] When in use, miscellaneous items can be piled up inside the rectangular frame, and the side baffles 19 and composite panels 16 will block the items from falling out of the campervan. When the campervan needs to be unfolded for use as a table, all miscellaneous items should be removed first. Then, the flip frame 17 should be flipped along the hinge so that the flip frame 17 is perpendicular to the side frame 12. At this time, the flip frame 17 is coplanar with the top frame 14 and is supported by the support part. The flip frame 17 can maintain a perpendicular state to the side frame 12 for a long time. Then, the composite panel 16 can be taken out from the rectangular frame, unfolded and placed on the top frame 14 and the flip frame 17. The area of ​​the composite panel 16 can then be used as a dining table, which greatly improves the usability of the campervan.

[0030] When the flip frame 17 is not flipped, both the main support rod 21 and the secondary support rod 22 are located within the storage groove 50, and their hinge points are located on the upper side of the side frame 12 in the vertical direction. When the flip frame 17 is unfolded, the main support rod 21 and the secondary support rod 22 flip out of the storage groove 50, and then flip along their hinge points with the storage groove 50, eventually flipping until the abutting block 24 abuts against the inner wall of the abutting groove 23. The angle between the main support rod 21 and the secondary support rod 22 and the hinge points of the side frame 12 and the flip frame 17 is an obtuse angle. Due to the abutting block 24 abutting against the abutting groove 23, the main support rod 21 and the secondary support rod 22 cannot flip further. The force on the flip frame 17 is transmitted sequentially to the side frame 12 through the secondary support rod 22 and the main support rod 21, thus achieving the purpose of supporting the flip frame 17.

[0031] When the gas storage block 29 is inserted into the mounting cavity 28, the connector 33 is inserted into the vent hole 31, and the ejector pin 35 pierces the hard sealing plate 32, directly connecting the vent hole 31 with the vent channel 36. To improve sealing, an assembly groove is provided inside the vent hole 31, and a sealing ring is fitted on the outside of the connector 33. When the sealing ring engages with the assembly groove, a sealing structure is formed. After the vent hole 31 connects with the vent channel 36, due to the piercing of the hard sealing plate 32, the gas in the gas storage cavity 30 enters the vent channel 36 through the vent hole 31, then transfers to the intake channel 37 through the intermediate channel 38, and finally enters the inflation cavity 26. Before the gas enters the intermediate channel 38 through the vent channel 36, the connecting port 43 must be aligned with the intermediate channel 38 before it can be introduced. After the gas storage block 29 is used once, it is pulled out of the mounting cavity 28, and a new gas storage block 29 is inserted back into the mounting cavity 28. The replacement sequence of the limiting block 48 and the gas storage block 29 is as follows: first, move the shearing plate 46 to the starting position, that is, the position where the shearing plate 46 is parallel to the main support rod 21; then insert the new limiting block 48 into the limiting channel 47; and finally replace the gas storage block 29.

[0032] In the initial state, the intermediate channel 38 is misaligned with the connecting port 43. At this time, the blocking post 41 closes the intermediate channel 38, the pressure spring 44 is compressed, and the pull rope 49 is tensioned. When the main support rod 21 and the auxiliary support rod 22 provide support, since the main support rod 21 and the auxiliary support rod 22 are hinged to each other, they can only maintain stability by relying on the contact limit between the abutment block 24 and the abutment groove 23.

[0033] When the load pressure on the flipping frame 17 is too high, the force exerted by the abutment groove 23 on the abutment block 24 increases, thereby increasing the force transmitted from the abutment block 24 to the shear plate 46 for flipping. This causes the shear plate 46 and the inner wall of the release chamber 45 to work together on the limiting block 48 to form a shearing force, thus cutting off the limiting block 48. At this time, the flipping frame 17 flips towards the side frame 12, causing the items placed on the flipping frame 17 to tilt and slide off, preventing the load from continuously applying pressure to the flipping frame 17. The shear plate 46 flips along the hinge, causing the abutment block 24 to further flip along with the shear plate 46, allowing the main support rod 21 and the secondary support rod 22 to continue relative movement. At this time, the pull rope 49 changes from a taut state to a slack state, and the elastic force of the pressure spring 44 pushes the sliding block 40 to move in the sliding chamber 39, causing the blocking post 41 to slide in the air intake channel 37 and the exhaust channel 36, aligning the middle channel 38 with the connecting port 43. The gas in the gas storage chamber 30 flows through the exhaust channel 36 to the intermediate channel 38 and then into the intake channel 37, ultimately increasing the air pressure in the inflation chamber 26. This causes the flexible expansion membrane 27 to expand rapidly, thus locking the expanded membrane 27 between the main support rod 21, the auxiliary support rod 22, the flipping frame 17, and the side frame 12, forming a quadrilateral frame. This slows down the further flipping of the main support rod 21 and the auxiliary support rod 22, as well as the flipping of the flipping frame 17 along the hinge. Because items slipping off the flipping frame 17 result in low inertia, the flexible expansion membrane 27 will not break. This prevents the flipping frame 17 from rapidly flipping down and colliding with the side frame 12 under load when the contact between the abutment block 24 and the abutment groove 23 fails, thus improving the service life of the side frame 12, the flipping frame 17, and the main support rod 21 and the auxiliary support rod 22.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and various changes and modifications can be made without departing from the spirit and scope of the invention, all of which fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A portable, foldable, multi-functional camping vehicle, characterized in that: include: Bottom frame (10) The side frame (12) is fixedly installed at the opposite end of the bottom frame (10), and a side baffle (19) is fixedly installed on the side frame (12). The top frame (14) is fixed to the side frame (12) at the end away from the bottom frame (10). The caster wheel (13) is fixed to the side of the bottom frame (10) away from the top frame (14). A flip frame (17) is located on the side of the side frame (12) away from the bottom frame (10). The end of the flip frame (17) near the top frame (14) is hinged to the side frame (12), and the end of the flip frame (17) away from the top frame (14) is detachably and fixedly connected to the side frame (12). A support portion is provided at the hinge point between the flip frame (17) and the side frame (12). The support portion is used to support the flip frame (17) and the side frame (12) at an angle. The bottom frame (10), side frame (12) and top frame (14) are combined to form a rectangular frame. A composite plate (16) is placed inside the side baffle (19). The composite plate (16) and the side baffle (19) together enclose the rectangular frame except for the top part.

2. The portable foldable multi-functional camping vehicle according to claim 1, characterized in that: The bottom frame (10) has a lower auxiliary frame (11) that protrudes toward the top frame (14) in the middle, and the top frame (14) has an upper auxiliary frame (15) that protrudes toward the bottom frame (10) in the middle.

3. A portable, foldable, multi-functional camping vehicle according to claim 1, characterized in that: The end of the flip frame (17) away from the top frame (14) is provided with a bolt hole (20) through which the side frame (12) passes. The bolt hole (20) is internally threaded with a bolt, which passes through the flip frame (17) and is threaded to the bolt hole (20) on the side frame (12).

4. A portable, foldable, multi-functional camping vehicle according to claim 1, characterized in that: A pull rod (18) is hinged to one side of a flip frame (17) away from the top frame (14).

5. A portable, foldable, multi-functional camping vehicle according to claim 1, characterized in that: The support section includes: Storage slots (50) are respectively opened on the opposite sides of the side frame (12) and the flip frame (17). The main support rod (21) is hinged at one end to the inner wall of the storage groove (50) located on the side frame (12). The secondary support rod (22) is hinged at one end to the inner wall of the storage slot (50) on the flip frame (17), and the opposite ends of the main support rod (21) and the secondary support rod (22) are hinged to each other. The connecting component is located inside the main support rod (21). The abutment block (24) is located on the side of the main support rod (21) facing the secondary support rod (22). The abutment block (24) is connected to the main support rod (21) through a connecting assembly. The abutment groove (23) is located on the side of the secondary support rod (22) facing the main support rod (21). The abutting block (24) bends toward the abutting groove (23) and extends into the abutting groove (23), and the inner wall of the abutting groove (23) can abut against the abutting block (24).

6. A portable, foldable, multi-functional camping vehicle according to claim 5, characterized in that: The connection components include: The release chamber (45) is located at the end of the main support rod (21). The shear plate (46) is hinged at one end inside the release chamber (45), and the other end of the shear plate (46) is fixed to the abutment block (24). The axial direction of the hinge axis of the shear plate (46) is the same as the axial direction of the hinge axis of the main support rod (21) and the secondary support rod (22). The limiting channel (47) is located inside the release chamber (45) and passes through the main support rod (21). The limiting block (48) is inserted into the limiting channel (47) and abuts against the shear plate (46). The limiting block (48) restricts the movement of the shear plate (46) by abutting against it.

7. A portable, foldable, multi-functional camping vehicle according to claim 6, characterized in that: An expansion block (25) is fixedly installed on the outside of the main support rod (21). An inflation chamber (26) is opened inside the expansion block (25). A flexible expansion membrane (27) is fixedly installed at the opening of the inflation chamber (26) to seal the inflation chamber (26) through the expansion block (25) on one side. An installation cavity (28) is also provided inside the expansion block (25) through one side. An air storage block (29) is inserted into the installation cavity (28). The air storage block (29) is hollow to form an air storage cavity (30). The air storage cavity (30) is filled with compressed gas. An air guiding structure is provided inside the main support rod (21). The air guiding structure is used to guide the gas in the air storage block (29) into the inflation cavity (26).

8. A portable, foldable, multi-functional camping vehicle according to claim 7, characterized in that: An exhaust hole (31) is provided at the end of the gas storage block (29) inserted into the installation cavity (28). A rigid sealing plate (32) is fixedly installed inside the exhaust hole (31) to seal the exhaust hole (31). A connector (33) is fixedly installed on the end wall of the installation cavity (28) opposite to the exhaust hole (31). An exhaust channel (36) communicating with the installation cavity (28) is provided inside the connector (33). An assembly mesh plate (34) is fixedly installed inside the exhaust channel (36). A pin (35) that can be inserted into the exhaust hole (31) and abut against the rigid sealing plate (32) is fixedly installed on the assembly mesh plate (34). The exhaust channel (36) is connected to the air guiding structure.

9. A portable, foldable, multi-functional camping vehicle according to claim 8, characterized in that: The air guiding structure includes an air intake channel (37) disposed inside the main support rod (21) and connected to the inflation chamber (26). An intermediate channel (38) is provided between the air intake channel (37) and the exhaust channel (36). A sliding cavity (39) is provided on the side of the intermediate channel (38). A sliding block (40) is slidably disposed in the sliding cavity (39). Two blocking posts (41) are fixedly disposed on the side of the sliding block (40) facing the air intake channel (37) and are respectively inserted into the exhaust channel (36) and the air intake channel (37). The column (41) has a conduction hole (42) that communicates with the exhaust channel (36) and the intake channel (37) respectively. The conduction hole (42) has a communication port (43) that can communicate with the intermediate channel (38). The end face of the sliding block (40) away from the blocking column (41) is fixedly provided with a pressure spring (44) that abuts against the inner wall of the sliding cavity (39). The end face of the sliding block (40) with the pressure spring (44) is fixedly provided with a pull rope (49) that extends into the release cavity (45) and is fixedly connected to the shear plate (46).

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