A cart that can be used as a camping table

Abstract

To provide a cart that can be used as a camping table, including a load-bearing plate assembly and a caster assembly. [Solution] A load-bearing plate assembly (1) has caster insertion mechanisms at its four corners, a caster storage mechanism (3) on its bottom, and a first set of table legs (41) and a second set of table legs (42) on its bottom. The first set of table legs includes two support legs (4) and a connecting cross pipe (5), the connecting cross pipe being located between the two support legs. The second set of table legs has the same structure as the first set of table legs. A connecting base (6) is located on the bottom of the load-bearing plate assembly, and the tops of the support legs are connected to the connecting base by hinges so that the load-bearing plate assembly can be folded or unfolded. This is suitable for transporting equipment required for outdoor camping activities, displaying food, and other needs. A control switch is located on the connecting cross pipe, and the control switch can be operated with one hand to activate and unlock a first locking mechanism, allowing the table legs to be folded or unfolded. The height of each support leg can be adjusted individually, making it suitable for placement on various uneven ground.

Description

[Technical Field]

[0001] The present invention relates to the technical field of small transportation devices, and more particularly to a cart that can be used as a camping table, which is particularly suitable for use in outdoor camping. [Background technology]

[0002] Carts are small transport devices that people often use in their daily lives. With socio-economic development and improvements in people's living standards, more and more people are enjoying outdoor camping. However, when camping, many things need to be prepared and carried, and if the campsite is far from the parking area, it is difficult to transport the camping equipment. Therefore, when camping, there is a high demand for portability and functionality of transport devices, and transport devices with multiple functions are often more popular.

[0003] A Chinese utility model patent with publication number CN215883714U discloses a folding pushcart with a table top, which includes a frame, a handle assembly, and four casters, the frame is foldable, and a handle assembly and a caster assembly are provided on the rear and bottom of the frame, respectively, and further includes a table assembly, which includes a table top and a support pole, the table top is assembled to the support pole, and both ends of the support pole are detachably attached to the front and rear sides of the top of the frame assembly.

[0004] In the above technical means, the pushcart can be used as a table, but because the casters are used as support legs, the table top cannot be kept level when the ground is not flat, making it unsuitable for placing objects. In addition, due to the height restriction of the pushcart, the height of the table top is also low, so the user must bend down to pick up items from the table while standing, which is an unpleasant experience. Furthermore, when folding the pushcart, the table top needs to be removed and then reassembled when it is needed to be used, which makes it inconvenient to use. Summary of the Invention

[0005] SUMMARY OF THE INVENTION The present invention aims to solve the above technical problems and provides a cart that can be used as a camping table, which is easy to carry and transport, and can be used as a table on uneven ground.

[0006] The present invention is realized by the following technical means:

[0007] The present invention provides a cart that can be used as a camping table, which includes a load-bearing plate assembly and a caster assembly, wherein the load-bearing plate assembly has caster attachment mechanisms at its four corners, a caster storage mechanism on its bottom surface, the caster assemblies are disposed in the caster storage mechanism, and the caster assemblies include casters and connecting posts that engage with the caster attachment mechanisms, and the load-bearing plate assembly has a first set of table legs and a second set of table legs at its bottom adjacent to its two short sides, and the first set of table legs has two supports. The present invention provides a cart that can be used as a camping table, the cart including support legs and a connecting cross pipe, the connecting cross pipe being provided between two of the support legs and connected to and fixed to the support legs, the second set of table legs having the same structure as the first set of table legs, the distance between the two support legs of the second set of table legs being set larger than the distance between the two support legs of the first set of table legs, a connecting base being provided at the bottom of the load-bearing plate assembly, and the tops of the support legs and the connecting base being connected by hinges so that the cart can be folded or unfolded relative to the load-bearing plate assembly.

[0008] In the above technical means, when it is necessary to use the device as a cart, with the first and second sets of table legs folded, the caster assemblies stored in the caster storage mechanism are removed and inserted into the caster insertion mechanism to convert it into the cart form for transporting items, and when it is necessary to use the device as a camping table, the caster assemblies are removed from the caster insertion mechanism and inserted into the caster storage mechanism, and the first and second sets of table legs are rotated to a fully expanded state to convert it into the camping table form for placing camping equipment. The present device can be quickly and conveniently switched between the cart form and the camping table form, and when used as a cart, it has a high item carrying capacity and can be moved smoothly while carrying items, and when used as a camping table, the support legs provide stable support and the table height is appropriate.

[0009] Preferably, the support legs are provided with a first locking mechanism, the connecting base is provided with a second locking mechanism that engages with the first locking mechanism, and the connecting cross pipe is provided with a control switch that drives and operates the first locking mechanism. In this technical solution, the support legs can be maintained in a folded or unfolded state by the engagement of the first locking mechanism and the control switch provided on the connecting cross pipe controls and operates the first locking mechanism, and the table legs can be rotated to unfold or fold using the connecting cross pipe as a force point, making operation more convenient.

[0010] Preferably, the first locking mechanism includes a slide block, a hook rod, a stopper, a support leg top sleeve, a first spring, and a positioning pin, the slide block is provided in the support leg and engages with the control switch, the hook rod has one end connected to the slide block and the other end connected to the stopper, the support leg top sleeve is fitted to the top of the support leg and has a slide space formed therein, the stopper is disposed in the slide space and is able to move back and forth along the slide space, the first spring is fitted onto the hook rod and is located within the slide space, one end abuts on the bottom of the stopper and the other end abuts on the bottom of the slide space, the positioning pin is fixed to the stopper, a first elongated relief hole is provided in a side wall of the support leg at a position corresponding to the positioning pin, and the positioning pin extends through the first relief hole to the outside of the support leg. In this technical solution, the first locking mechanism is installed inside the support leg, which provides excellent dust resistance, and the hook rod allows the position of the slide block relative to the stopper to be set more freely, which is advantageous for selecting an appropriate position to attach the connecting cross pipe and ensures sufficient strength of the table leg.

[0011] Preferably, the second locking mechanism includes an arc-shaped slide groove, a first locking groove, and a second locking groove, the first locking groove and the second locking groove being respectively provided at both ends of the arc-shaped slide groove and communicating with the arc-shaped slide groove, when the support leg rotates relative to the connection base, the positioning pin slides along the arc-shaped slide groove, when the support leg is fully folded relative to the load-bearing plate assembly, the positioning pin engages with the first locking groove, and when the support leg is fully unfolded relative to the load-bearing plate assembly, the positioning pin engages with the second locking groove. In this technical solution, when the support leg rotates relative to the connection base, the engagement between the arc-shaped slide groove and the positioning pin plays a guiding role; when the support leg is fully folded relative to the load-bearing plate assembly to be used as a cart, the positioning pin engages with the first locking groove to maintain the folded state of the support leg, so that the support leg will not accidentally unfold due to vibration when the cart moves on the road surface; when the support leg is fully unfolded relative to the load-bearing plate assembly to be used as a camping table, the positioning pin engages with the second locking groove to maintain the unfolded state of the support leg, so that the support leg stably supports the load-bearing plate assembly, has high load-bearing strength, and will not accidentally be folded due to external force.

[0012] Preferably, the control switch includes a first lock rod, the first lock rod being axially movably disposed within the connecting cross pipe, the first lock rod having an inner end and an outer end, the outer end of the first lock rod being located outside the end of the connecting cross pipe, a driving pin provided radially at the outer end of the first lock rod, an insertion groove provided in the slide block into which the outer end of the first lock rod is inserted, and a guide inclined surface provided on a groove wall of the insertion groove for engaging with the driving pin. In this way, due to the engagement between the driving pin and the guide inclined surface, when the first lock rod moves axially, the slide block is driven by the driving pin to move axially along the support leg, and the hook rod transmits power to drive the stopper to move, thereby disengaging the positioning pin from the connecting base.

[0013] Preferably, the control switch further includes a second spring, a rotating sleeve, and a limit sleeve, the number of first lock rods is two, the two first lock rods are arranged symmetrically on both the left and right sides within the connecting cross pipe, the second spring is disposed between the inner ends of the two first lock rods and provides elastic force for returning the first lock rods axially outward, the rotating sleeve is fitted onto the outside of the connecting cross pipe and connected to the inner ends of the two first lock rods, the rotating sleeve is arranged to be able to drive the two first lock rods to approach each other in the axial direction when rotating relative to the connecting cross pipe, the number of limit sleeves is two, the two limit sleeves are fitted onto either side of the rotating sleeve on the outside of the connecting cross pipe, and are fixed to the connecting cross pipe by a first connecting pin to limit the axial sliding of the rotating sleeve, and a long slide limiting hole is formed in the first lock rod at a position corresponding to the first connecting pin, and the first connecting pin is arranged to pass through the slide limiting hole. In this way, the first locking mechanism can be unlocked simply by gripping and rotating the rotating sleeve with one hand, and the support legs can be rotated to be deployed or folded simply by pulling the connecting cross pipe.

[0014] Preferably, the rotating sleeve has a push groove, a strut is provided radially at the inner end of the first lock rod, and a second, elongated relief hole is provided axially at a position of the connecting cross pipe corresponding to the strut, the strut passes through the second relief hole and extends into the push groove and abuts against a side wall of the push groove, the push groove is a heart-shaped groove having one escape end and two retracted ends, and the side wall of the heart-shaped groove drives the first lock rod to slide axially inward along the connecting cross pipe when the strut slides from the escape end toward one of the retracted ends. In this technical solution, the rotating sleeve drives the first lock rod to move axially inward to unlock the first locking mechanism whether the rotating sleeve rotates clockwise or counterclockwise relative to the connecting cross pipe, thereby adapting to different user habits.

[0015] Preferably, a height adjustment mechanism is provided at the bottom of the support leg, and the height adjustment mechanism includes a leg sleeve, an adjustment switch, an adjustment spring, an adjustment positioning plate, and a height adjustment pipe, the leg sleeve is fitted onto and fixed to the bottom end of the support leg, the adjustment switch is rotatably attached to the leg sleeve by a rivet, the adjustment spring is fitted onto the rivet, one end abuts the inside of the upper end of the adjustment switch and the other end abuts the leg sleeve, the adjustment positioning plate is fixed to one side of the height adjustment pipe facing the adjustment switch, a first tooth is provided on the surface of the adjustment positioning plate along its longitudinal direction, and a second tooth is provided on the inside of the lower end of the adjustment switch to engage with the first tooth and lock. In this technical means, the adjustment switch is pressed to pull and adjust the height adjustment pipe, and after adjustment, the pressure on the adjustment switch is released, thereby locking the height adjustment pipe with the adjustment switch, allowing for quick height adjustment of the support legs. In addition, the height of each support leg can be adjusted individually, making it possible to adapt to various uneven ground surfaces and always maintaining the table in a horizontal state.

[0016] Preferably, the load-bearing plate assembly is provided with a towing handle, the towing handle including a guide pipe, a guide pipe plug, a guide connection base, a pull rod connection base, a pull rod, and a handle, the guide pipe plug is fixed to the inner end of the guide pipe, the guide connection base is fixed to the outer end of the guide pipe, the pull rod connection base is fixed to the lower end of the pull rod and is hingedly connected to the guide connection base, the number of guide pipes is two, and the guide pipes are respectively disposed in two guide grooves provided on both sides of the bottom of the load-bearing plate assembly, the number of pull rods is two, the handle is provided between the two pull rods and connected to and fixed on the upper ends of the two pull rods, and a towing handle locking mechanism is provided at the bottom of the load-bearing plate assembly. In this way, when used as a cart, the towing handle can be pulled out and the user can hold the handle of the towing handle to pull the cart and move it on the ground, making towing convenient, and the pull rod can rotate relative to the guide pipe, i.e., the height of the handle of the towing handle can accommodate the grip of users of different heights, so users of different heights can pull and move the cart in a comfortable posture.

[0017] Preferably, the load-bearing plate assembly includes a load-bearing plate and a metal frame, the metal frame is fixed to the bottom of the load-bearing plate, and the connection base is connected and fixed to the metal frame and the load-bearing plate, thereby not only improving the load-bearing capacity of the entire load-bearing plate assembly, but also improving the connection strength between the support legs and the load-bearing plate assembly, making the performance more stable.

[0018] Preferably, a basket buckle and a basket buckle insertion groove are provided on a side of the load-bearing plate, the basket buckle is connected to the basket buckle insertion groove by a buckle locking method, an elastic rope is connected to the basket buckle, and the other end of the elastic rope is connected to the load-bearing plate and fixed. In this way, when a box or an article is placed on the load-bearing plate, the box or article can be fixed using the basket buckle and the elastic rope.

[0019] The beneficial effects of the present invention are as follows: the present invention can be used as both a cart and a camping table, and is suitable for transporting equipment required for outdoor camping activities, displaying food, etc.; the support legs are provided with a first locking mechanism, which allows the support legs to remain fully folded or unfolded relative to the load-bearing plate assembly, making the overall product reliable; the connecting cross pipe is provided with a control switch, which allows the first locking mechanism to be operated with one hand to activate and unlock the first locking mechanism and unfold or fold the table legs, making operation convenient; and the height of each support leg can be adjusted individually, making it adaptable to placement on various uneven ground when used as a camping table. [Brief explanation of the drawings]

[0020] [Figure 1] 1 is a schematic diagram of the cart of the present invention viewed from the bottom. FIG. [Figure 2] FIG. 2 is a partially enlarged schematic view of part A in FIG. [Figure 3] 1 is a schematic diagram of the locking block of the connecting post of the present invention; [Figure 4] 1 is a schematic diagram of a caster assembly according to the present invention; [Figure 5] 1 is a schematic diagram of a locking mechanism for a set of casters according to the present invention; [Figure 6] 1 is a schematic diagram of a second set of table legs according to the present invention; [Figure 7] FIG. 2 is a schematic diagram of the first locking mechanism of the present invention. [Figure 8] 3 is a schematic diagram of the first locking mechanism and the control switch according to the present invention when they are engaged with each other; FIG. [Figure 9] 1 is a schematic diagram of a slide block of the first locking mechanism of the present invention; FIG. [Figure 10] 4 is a schematic diagram illustrating the engagement between the rotary sleeve and the first lock rod of the present invention. FIG. [Figure 11] 2 is a schematic diagram of the connecting cross pipe and the control switch of the present invention; [Figure 12] 1 is a schematic diagram of the table leg of the present invention connected to the metal frame of the load-bearing plate assembly. [Figure 13] FIG. 13 is a partially enlarged schematic view of part B in FIG. [Figure 14] 1 is a schematic diagram of a camping table according to the present invention; [Figure 15] 1 is a schematic diagram of the height adjustment mechanism of the present invention; [Figure 16] 1 is a schematic diagram of a load-bearing plate assembly according to the present invention when a towing handle is attached thereto; [Figure 17] 1 is a schematic diagram of a towing handle according to the present invention; [Figure 18] 1 is a schematic diagram of a towing handle locking mechanism according to the present invention; [Figure 19] 1 is a schematic diagram of the basket buckle and elastic rope of the present invention in use. DETAILED DESCRIPTION OF THE INVENTION

[0021] The drawings are merely for illustrative purposes and should not be understood as limiting the present invention, and those skilled in the art will understand that in order to better explain the present embodiment, some components in the drawings may be omitted, enlarged, or reduced in size, and the drawings do not represent the dimensions of actual products, and some known structures and their descriptions may be omitted in the drawings. The positional relationships illustrated in the drawings are merely for illustrative purposes and should not be understood as limiting the present invention.

[0022] The technical means of the present invention will be described in more detail below by way of specific examples with reference to the accompanying drawings.

[0023] Example 1 As shown in FIG. 1 , the present invention provides a cart that can be used as a camping table, including a load-bearing plate assembly 1 and a caster assembly 2. The load-bearing plate assembly 1 includes a load-bearing plate 11 and a metal frame 12. The metal frame 12 is fixed to the bottom of the load-bearing plate 11. Caster insertion mechanisms 111 are provided at the four corners of the load-bearing plate 11. A caster storage mechanism 3 is provided on the bottom surface of the load-bearing plate 11. A caster assembly 2 is disposed in the caster storage mechanism 3. A first set of table legs 41 and a second set of table legs 42 are provided adjacent to the two short sides of the bottom of the load-bearing plate 11, respectively. The first set of table legs 41 includes two support legs 4 and a connecting cross pipe 5. The connecting cross pipe 5 is provided between the two support legs 4 and is connected to and fixed to the support legs 4; the second set of table legs 42 has the same structure as the first set of table legs 41, and the distance between the two support legs 4 of the second set of table legs 42 is set larger than the distance between the two support legs 4 of the first set of table legs 41, so that the first set of table legs 41 and the second set of table legs 42 do not affect each other when folded or unfolded; a connecting base 6 is provided at the bottom of the load-bearing plate 11, and the connecting base 6 is connected to and fixed to the metal frame 12 and the load-bearing plate 11; the tops of the support legs 4 and the connecting base 6 are connected by hinges, allowing the support legs 4 to be folded or unfolded relative to the load-bearing plate 11.

[0024] As shown in Figures 2, 3 and 4, in this embodiment, the caster insertion mechanism 111 includes a socket and a connecting post locking block 13. The socket is integrally formed with the load-bearing plate 11. The socket has an insertion hole 1111 and an insertion hole 1112 on the side of the socket. The connecting post locking block 13 is attached to the insertion hole 1112 and has a "V"-shaped return spring seat 131 at the insertion end. The connecting post locking block 13 has an unlocking hole 132 and a locking hole 133. The unlock hole 132 communicates with the lock hole 133 and has a diameter set to be the same as that of the insertion hole 1111, and the diameter of the lock hole 133 is set to be smaller than that of the unlock hole 132. The caster assembly 2 includes a caster 21 and a connecting post 22 that engages with the caster insertion mechanism 111, and the connecting post 22 has an annular notch 221. The outer diameter of the connecting post 22 is set to fit into the insertion hole 1111, and the outer diameter of the annular notch 221 is set to fit into the diameter of the lock hole 133.

[0025] As shown in FIG. 5, the caster storage mechanism 3 includes two sets of caster fixing mechanisms, each set of which includes one caster cover 31 and two connecting post fixing plates 32. The side of the caster cover 31 is provided with two arc-shaped grooves that fit the casters 21. The end of the connecting post fixing plate 32 is provided with a connecting post engagement port 321. The caster 21 is positioned between the caster cover 31 and the connecting post fixing plate 32, with a portion of the caster 21 positioned in the arc-shaped groove. The connecting post 22 is engaged and fixed in the connecting post engagement port 321. There are four caster assemblies 2. When it is necessary to remove a caster assembly 2, the caster assembly 2 can be removed by rotating the caster assembly 2 clockwise or counterclockwise to remove the connecting post 22 from the connecting post engagement port 321.

[0026] 6 and 7 , the connecting cross pipe 5 is connected and fixed to the support leg 4 by a fixing sleeve 7, the fixing sleeve 7 is fitted onto the support leg 4 and fixed thereto, a connection port is provided on the side of the fixing sleeve 7, the end of the connecting cross pipe 5 is inserted into the connection port of the fixing sleeve 7 and connected and fixed to the fixing sleeve 7 by a second connecting pin 71, a first locking mechanism 8 is provided on the support leg 4, and a control switch 9 for driving and operating the first locking mechanism 8 is provided on the connecting cross pipe 5. In this embodiment, the first locking mechanism 8 includes a slide block 81, a hook rod 82, a stopper 83, a support leg top sleeve 84, a first spring 85, and a positioning pin 86, the slide block 81 is provided in the support leg 4 and engages with the control switch 9, the hook rod 82 has a lower end connected to the slide block 81 and an upper end connected to the stopper 83, the support leg top sleeve 84 is fitted onto the top of the support leg 4, a slide space 841 is provided therein, and the stopper 83 is provided in the slide space 84 1 and is capable of sliding back and forth up and down along the slide space 841, the first spring 85 is fitted onto the hook rod 82 and is located within the slide space 841, with its upper end abutting the bottom of the stopper 83 and its lower end abutting the bottom of the slide space 841, the positioning pin 86 is fixed to the side surface of the stopper 83, and a long first escape hole 40 is provided in the side wall of the support leg 4 at a position corresponding to the positioning pin 86, and the positioning pin 86 passes through the first escape hole 40 and extends to the outside of the support leg 4.

[0027] 8, 9, and 10, in this embodiment, the control switch includes a first lock rod 91, a second spring 92, a rotating sleeve 93, and a limit sleeve 94. There are two first lock rods 91, and the two first lock rods 91 are axially movably arranged symmetrically on both the left and right sides of the connecting cross pipe 5. Each first lock rod 91 has an inner end and an outer end, the outer end of which is located outside the end of the connecting cross pipe 5 and extends into the support leg 4. A drive pin 911 is radially provided at the outer end of the first lock rod 91. An insertion groove is provided in the slide block 81, into which the outer end of the first lock rod 91 is inserted, and a guide inclined surface 811 that engages with the drive pin 911 is provided on the groove wall of the insertion groove. The second spring 92 is disposed between the inner ends of the two first lock rods 91 and provides elastic force to return the first lock rods 91 axially outward. The rotating sleeve 93 is formed with a pushing groove 931. A strut 912 is radially disposed at the inner end of the first lock rod 91. A long second relief hole 51 is disposed in the axial direction at a position of the connecting cross pipe 5 corresponding to the strut 912. The strut 912 passes through the second relief hole 51 and extends into the pushing groove 931, abutting against the side wall of the pushing groove 931. The pushing groove 931 is a heart-shaped groove having one escape end 9311 and two retracted ends 9312. When the strut 912 pushes the strut 912 to slide from the escape end 9311 toward one of the retracted ends 9312, the side wall of the heart-shaped groove drives the first lock rod 91 to slide axially inward along the connecting cross pipe 5. There are two limit sleeves 94, which are fitted onto either side of the rotating sleeve 93 on the outside of the connecting cross pipe 5 and fixed to the connecting cross pipe 5 by a first connecting pin 941 to limit the axial sliding of the rotating sleeve 93. Elongated slide limiting holes 913 are provided in the first lock rod 91 at positions corresponding to the first connecting pin 941 and the second connecting pin 71, and the first connecting pin 941 and the second connecting pin are provided to pass through the corresponding slide limiting holes 913 to guide and limit the first lock rod 91.

[0028] As a further improvement, as shown in FIG. 11, a protective sleeve 95 made of soft vinyl is fitted over the outer surface of the rotating sleeve 93, which provides dust protection, improves grip, and provides anti-slip properties.

[0029] As shown in Figures 12 and 13, in this embodiment, the connection base 6 is provided with a second locking mechanism that engages with the first locking mechanism 8, and the second locking mechanism includes an arc-shaped slide groove 61, a first locking groove 611, and a second locking groove 612. The first locking groove 611 and the second locking groove 612 are respectively provided at both ends of the arc-shaped slide groove 61 and communicate with the arc-shaped slide groove 61. When the support leg 4 rotates relative to the connection base 6, the positioning pin 86 slides along the arc-shaped slide groove 61. When the support leg 4 is fully folded relative to the load-bearing plate assembly 1, the positioning pin 86 engages with the first locking groove 611, and when the support leg 4 is fully unfolded relative to the load-bearing plate assembly 1, the positioning pin 86 engages with the second locking groove 612.

[0030] Example 2 14 and 15 , the present embodiment is similar in structure to Example 1, but differs in the following respects: a height adjustment mechanism is provided at the bottom of the support leg 4, the height adjustment mechanism includes a leg sleeve 43, an adjustment switch 44, an adjustment spring 45, an adjustment positioning plate 46, and a height adjustment pipe 47, the leg sleeve 43 is fitted and fixed to the bottom end of the support leg 4, the adjustment switch 44 is rotatably attached to the leg sleeve 43 by a rivet 441, the adjustment spring 45 is fitted to the rivet 441, one end abuts the inside of the upper end of the adjustment switch 44 and the other end abuts the leg sleeve 43, the adjustment positioning plate 46 is fixed to one side of the height adjustment pipe 47 facing the adjustment switch, a first tooth is provided on the surface of the adjustment positioning plate 46 along its longitudinal direction, and a second tooth is provided on the inside of the lower end of the adjustment switch to engage with the first tooth.

[0031] Example 3 16 and 17, the present embodiment is similar in structure to the second embodiment, but differs in the following respects: As shown in Fig. 16 and Fig. 17, a towing handle 10 is provided on a load-bearing plate 11, and the towing handle 10 includes a guide pipe 101, a guide pipe plug 102, a guide connection base 103, a torsion spring 104, a pull rod connection base 105, a pull rod 106, and a handle 107. The guide pipe plug 102 is fixed to the inner end of the guide pipe 101, the guide connection base 103 is fixed to the outer end of the guide pipe 102, the pull rod connection base 105 is fixed to the lower end of the pull rod 106, and the guide connection base 103 is fixed to the The load-bearing plate 11 has a towing handle 106 and a pull rod connection base 105. The load-bearing plate 11 has a towing handle lock mechanism 13 at the bottom thereof. The towing handle 106 is connected to the load-bearing plate 11 by a hinge, and a torsion spring 104 is fitted onto the guide connection base 103 and the pull rod connection base 105 at the hinged connection. The load-bearing plate 11 has two guide pipes 102, which are respectively disposed in two guide grooves provided on both sides of the bottom of the load-bearing plate 11. The load-bearing plate 11 has two pull rods 106. The handle 107 is provided between the two pull rods 106 and is connected to and fixed at the upper ends of the two pull rods 106. The load-bearing plate 11 has a towing handle lock mechanism 13 at the bottom thereof for locking the towing handle 10.

[0032] As shown in FIGS. 17 and 18, in this embodiment, the towing handle locking mechanism 13 includes two second lock rods 131, a third spring 132, a push button 133, a lock box cover 134, and a pipe sleeve 135. The two second lock rods 131 are axially symmetrically mounted in second lock rod grooves provided on the bottom surface of the load-bearing plate 11. A boss 1311 is provided radially at the inner end of the second lock rod 131. A push button 133 is fixed to the inner end of the second lock rod 131. The push button 133 is provided with a drive inclined hole 1331 that engages with the boss 1311. When the push button 133 is pressed, the push button 133 passes through the drive inclined hole 1331 and engages with the boss 1311, driving the two second lock rods 131 to move closer to each other in the axial direction. The third spring 132 is provided at the bottom of the push button 133 to provide elastic force for the push button 133 to return to its original position. The lock box cover 134 is provided at a position corresponding to the push button 133, is connected to and fixed on the bottom surface of the load-bearing plate 11, and seals the inner end of the second lock rod 131 and the third spring 132. The pipe sleeve 135 is provided at one end of the corresponding second lock rod 131 remote from the third spring 132, and is connected to and fixed on the bottom surface of the load-bearing plate 11. The pipe sleeve 135 is fitted onto the outside of the guide pipe 101, and has a first lock hole 1011 formed on the inside of the guide pipe 101 at a position adjacent to the guide pipe plug 102. A second lock hole 1061 is formed on the inside of the pull rod 106 at a position adjacent to the handle 107. The first lock hole 1011 is configured to engage with and lock the second lock rod 131 when the corresponding towing handle 10 is fully pulled out, and the second lock hole 1061 is configured to engage with and lock the second lock rod 131 when the corresponding towing handle 10 is fully retracted into the load-bearing plate 11. The pipe sleeve 135 serves to seal the outer end of the second lock rod 131 and the guide pipe 101, restricting the sliding of the guide pipe 101 along the pull rod groove, and the pipe sleeve 135 and the guide pipe plug 102 engage to prevent the guide pipe 101 from being pulled outward excessively and coming off the load-bearing plate 11.

[0033] As a further improvement, as shown in Figure 19, a basket buckle 113 and a basket buckle insertion groove 112 are provided on the side of the load-bearing plate 11, the basket buckle 113 is connected to the basket buckle insertion groove 112 using a buckle locking method, an elastic rope 114 is connected to the basket buckle 113, and the other end of the elastic rope 114 is connected to the load-bearing plate 11 and fixed.

[0034] Obviously, the above-described embodiments of the present invention are merely examples for clarifying the present invention, and are not intended to limit the embodiments of the present invention. Those skilled in the art may make further changes or modifications based on the above description. It is not possible to cover all embodiments. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the utility model registration claims of the present invention.

Claims

1. A cart usable as a camping table includes a load-bearing plate assembly (1) and a caster assembly (2), wherein the load-bearing plate assembly (1) has caster insertion mechanisms (111) at its four corners, a caster storage mechanism (3) is provided on the bottom surface of the load-bearing plate assembly (1), the caster assembly (2) is disposed in the caster storage mechanism (3), the caster assembly (2) includes casters (21) and connecting posts (22) that engage with the caster insertion mechanisms (111), and a first set of table legs (41) and a second set of table legs (42) are provided at positions adjacent to the two short sides of the bottom of the load-bearing plate assembly (1), respectively, and the first set of table legs (41) has two support legs. a connecting cross pipe (5) between the two support legs (4) and connected to and fixed to the support legs (4); the second set of table legs (42) has the same structure as the first set of table legs (41); the distance between the two support legs (4) of the second set of table legs (42) is set to be greater than the distance between the two support legs (4) of the first set of table legs (41); a connecting base (6) is provided at the bottom of the load-bearing plate assembly (1), and the tops of the support legs (4) and the connecting base (6) are connected by hinges so that the cart can be folded or unfolded relative to the load-bearing plate assembly (1).

2. A cart that can be used as a camping table as described in claim 1, characterized in that the support leg (4) is provided with a first locking mechanism (8), the connection base (6) is provided with a second locking mechanism that engages with the first locking mechanism (8), and the connection cross pipe (5) is provided with a control switch (9) that drives and operates the first locking mechanism (8).

3. The first locking mechanism (8) includes a slide block (81), a hook rod (82), a stopper (83), a support leg top sleeve (84), a first spring (85), and a positioning pin (86). The slide block (81) is provided in the support leg (4) and engages with the control switch (9). The hook rod (82) has one end connected to the slide block (81) and the other end connected to the stopper (83). The support leg top sleeve (84) is fitted to the top of the support leg (4) and has a slide space (841) therein. The stopper (83) is disposed in the slide space (841) and engages with the slide space (9). The cart that can be used as a camping table as described in claim 2, characterized in that the cart is capable of reciprocating movement along the space (841) between the support legs (4), the first spring (85) is fitted onto the hook rod (82) and is located within the slide space (841), one end abuts the bottom of the stopper (83) and the other end abuts the bottom of the slide space (841), the positioning pin (86) is fixed to the stopper (83), a long first escape hole (40) is provided on the side wall of the support leg (4) at a position corresponding to the positioning pin (86), and the positioning pin (86) passes through the first escape hole (40) and extends outside the support leg (4).

4. 4. The cart usable as a camping table according to claim 3, wherein the second locking mechanism includes an arc-shaped slide groove (61), a first locking groove (611), and a second locking groove (612), the first locking groove (611) and the second locking groove (612) being respectively provided at both ends of the arc-shaped slide groove (61) and communicating with the arc-shaped slide groove (61), the positioning pin (86) sliding along the arc-shaped slide groove (61) when the support leg (4) rotates relative to the connection base (6), the positioning pin (86) engaging with the first locking groove (611) when the support leg (4) is fully folded relative to the load-bearing plate assembly (1), and the positioning pin (86) engaging with the second locking groove (612) when the support leg (4) is fully unfolded relative to the load-bearing plate assembly (1).

5. 4. The cart usable as a camping table according to claim 3, wherein the control switch (9) includes a first lock rod (91), the first lock rod (91) is arranged in the connecting cross pipe (5) so as to be axially movable, the first lock rod (91) includes an inner end and an outer end, the outer end of the first lock rod (91) is located outside the end of the connecting cross pipe (5), a drive pin (911) is provided radially at the outer end of the first lock rod (91), the slide block (81) is provided with an insertion groove into which the outer end of the first lock rod (91) is inserted, and a groove wall of the insertion groove is provided with a guide inclined surface (811) that engages with the drive pin (911).

6. The control switch (9) further includes a second spring (92), a rotating sleeve (93), a limit sleeve (94), and a protective sleeve (95). The number of the first lock rods (91) is two, and the two first lock rods (91) are symmetrically arranged on both the left and right sides of the connecting cross pipe (5). The second spring (92) is disposed between the inner ends of the two first lock rods (91) to provide elastic force for the first lock rods (91) to return axially outward. The rotating sleeve (93) is fitted onto the outside of the connecting cross pipe (5) and connected to the inner ends of the two first lock rods (91). The rotating sleeve (93) prevents the two first lock rods (91) from coming close to each other in the axial direction when rotating relative to the connecting cross pipe (5).

6. The cart usable as a camping table according to claim 5, characterized in that the cart is configured to be drivable so as to rotate in an axial direction, the protective sleeve (95) is fitted onto the outside of the rotating sleeve (93) and fixed thereto, the number of the limit sleeves (94) is two, the two limit sleeves (94) are fitted onto both sides of the rotating sleeve (93) outside the connecting cross pipe (5), and are fixed to the connecting cross pipe (5) by first connecting pins (941) to limit axial sliding of the rotating sleeve (93), and the first lock rod (91) has an elongated slide limiting hole (913) at a position corresponding to the first connecting pin (941), and the first connecting pin (941) is provided to pass through the slide limiting hole (913).

7. A push groove (931) is formed in the rotating sleeve (93), a strut (912) is provided in the radial direction at the inner end of the first lock rod (91), and a long second relief hole (51) is provided in the axial direction at a position of the connecting cross pipe (5) corresponding to the strut (912), and the strut (912) passes through the second relief hole (51) and extends into the push groove (931), abutting against the side wall of the push groove (931), and the push groove (931) The cart usable as a camping table according to claim 6, characterized in that the heart-shaped groove has one escape end (9311) and two retreat ends (9312), and the side walls of the heart-shaped groove drive the first lock rod (91) to slide axially inward along the connecting cross pipe (5) when the strut (912) pushes to slide from the escape end (9311) in the direction of one of the retreat ends (9312).

8. A height adjustment mechanism is provided at the bottom of the support leg (4), and the height adjustment mechanism includes a leg sleeve (43), an adjustment switch (44), an adjustment spring (45), an adjustment positioning plate (46), and a height adjustment pipe (47). The leg sleeve (43) is fitted onto the bottom end of the support leg (4) and fixed thereto. The adjustment switch (44) is rotatably attached to the leg sleeve (43) by a rivet (441). The adjustment spring (45) is fitted onto the rivet (441), and one end of the adjustment spring (45) is fixed to the adjustment pipe (47). The cart usable as a camping table according to any one of claims 1 to 7, characterized in that the adjustment positioning plate (46) abuts against the inside of the upper end of the height adjustment switch (44) and the other end abuts against the leg sleeve (43), the adjustment positioning plate (46) is fixed to one side of the height adjustment pipe (47) facing the adjustment switch (44), a first tooth is provided on the surface of the adjustment positioning plate (46) along its longitudinal direction, and a second tooth is provided on the inside of the lower end of the adjustment switch (44) that engages with and engages with the first tooth.

9. The load-bearing plate assembly (1) is provided with a towing handle (10), which includes a guide pipe (101), a guide pipe plug (102), a guide connection base (103), a pull rod connection base (105), a pull rod (106), and a handle (107), wherein the guide pipe plug (102) is fixed to the inner end of the guide pipe (101), the guide connection base (103) is fixed to the outer end of the guide pipe (101), the pull rod connection base (105) is fixed to the lower end of the pull rod (106), and the guide connection base (103) is fixed to the lower end of the pull rod (106).

10. The cart usable as a camping table according to claim 8, characterized in that the cart is hinged to the load-bearing plate assembly (1), the number of guide pipes (101) is two, and the guide pipes (101) are respectively arranged in two guide grooves provided on both sides of the bottom of the load-bearing plate assembly (1), the number of pull rods (106) is two, the handles (107) are provided between the two pull rods (106) and are connected to and fixed at the upper ends of the two pull rods (106), and a towing handle locking mechanism (13) for locking the towing handle (10) is provided at the bottom of the load-bearing plate assembly (1).

10. 2. The cart usable as a camping table according to claim 1, characterized in that the load-bearing plate assembly (1) comprises a load-bearing plate (11) and a metal frame (12), the metal frame (12) is fixed to the bottom of the load-bearing plate (11), and the connection base (6) is connected and fixed to the metal frame (12) and the load-bearing plate (11).

11. The cart usable as a camping table according to claim 10, characterized in that a basket buckle (113) and a basket buckle insertion groove (112) are provided on the side of the load-bearing plate (11), the basket buckle (113) is connected to the basket buckle insertion groove (112) using a buckle locking method, an elastic rope (114) is connected to the basket buckle (113), and the other end of the elastic rope (114) is connected to and fixed on the load-bearing plate (11).

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