Foldable plate trailer

Abstract

The utility model provides a foldable plate trailer which solves the problems that in the prior art, a plate trailer is of an integrated structure, cannot be folded and is large in occupied space. The folding plate is composed of a middle plate and folding plates at the two ends, and a folding assembly is arranged on the middle plate. The folding assembly comprises a support and a connecting rod, a sliding rod is arranged on the support, and the connecting rod is connected with the middle plate and the folding plate. A driving piece for driving the sliding rod to move up and down is also arranged on the middle plate. The sliding rod has two positions, namely an unfolding position and a folding position. When the driving piece enables the sliding rod to move to the unfolding position, the connecting rod is in a supporting state, and the folding plate is unfolded; when the sliding rod moves to the folding position, the connecting rod is changed into the supporting state again, and the folding plate is folded. A user can easily operate the plate trailer to be switched between the folded state and the unfolded state, so that the using process is greatly simplified, and time is saved. The plate trailer can be quickly unfolded from a folded state to a use state or folded from the use state to a compact state, is convenient to carry and store, and is particularly suitable for scenes with limited space or needing frequent movement.

Description

Technical Field

[0001] The utility model belongs to the technical field of pallet trucks, and in particular relates to a foldable pallet truck. Background Art

[0002] A pallet truck, also known as a trolley or trailer, is a simple yet extremely practical means of transport, widely used to move goods over short distances. Its ease of use and efficient cargo capacity make it an ideal choice for reducing the labor of manual handling in warehouses, factories, supermarkets, and construction sites. Beyond its basic function of transporting goods, pallet trucks offer a variety of uses and configurations to suit different scenarios.

[0003] In a supermarket environment, a cart can be covered with a cloth bag and transformed into a multifunctional storage cart. This design not only makes it convenient for customers to collect and carry goods while shopping, but also effectively maintains the cleanliness and order inside the supermarket. The use of cloth bags makes the cart more flexible and can be quickly emptied or reloaded as needed, improving shopping efficiency. In addition, the cart can be equipped with different accessories and expansion functions according to specific usage needs.

[0004] Most of the freight carts currently used in the market are of one-piece structure. When not in use, they take up a large space, which is not conducive to the effective use of space, especially in environments with limited space such as urban distribution centers or warehouses. Utility Model Content

[0005] The utility model provides a foldable cart, aiming to solve the problem in the prior art that the cart is an integrated structure, cannot be folded, and occupies a large space.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] The utility model provides a foldable cart, comprising a middle plate, wherein both ends of the middle plate are respectively provided with folding plates, the folding plates are rotatably connected to the middle plate, and a folding assembly is provided on the middle plate;

[0008] The folding assembly includes a bracket provided on the intermediate plate and a plurality of connecting rod assemblies for driving the folding plate to unfold or fold. The bracket is provided with a sliding rod. The driving end of the connecting rod assembly is connected to the intermediate plate, and the output end of the connecting rod assembly is connected to the folding plate.

[0009] The middle plate is provided with a driving member for driving the slide bar to slide up and down, the slide bar includes an expanded position for expanding the folding plate and a folded position for folding the folding plate, and the connecting rod assembly includes a contracted state and a supporting state. When the driving member drives the slide bar to slide from the folded position to the expanded position, the slide bar drives the connecting rod assembly to switch to the supporting state, and the folding plate is converted from the folded state to the expanded state; when the driving member drives the slide bar to slide from the expanded position to the folded position, the slide bar drives the connecting rod assembly to switch to the supporting state, and the folding plate is converted from the expanded state to the folded state.

[0010] In a preferred embodiment, the connecting rod assembly includes a first rod and a second rod, the first rod includes an output end and a connecting end, the second rod includes a driving end and a connecting end, the output end of the first rod is rotatably connected to the folding plate, the connecting end of the first rod is hinged to the connecting end of the second rod, and the driving end of the second rod is rotatably connected to the intermediate plate.

[0011] Based on the above solution, the output end of the first rod is rotatably connected to the folding plate, and the driving end of the second rod is rotatably connected to the middle plate, so that the folding plate can be unfolded and folded relative to the middle plate through the rotation of the connecting rod assembly.

[0012] In a preferred embodiment, a strip groove is provided on the slide bar, and a driving column that cooperates with the strip groove is provided on the second rod;

[0013] When the driving member drives the sliding rod to slide from the folded position to the unfolded position, the sliding rod drives the second rod to rotate through the driving column, and the second rod drives the first rod to rotate so that the folding plate is converted from the folded state to the unfolded state; when the driving member drives the sliding rod to slide from the unfolded position to the folded position, the sliding rod drives the second rod to rotate through the driving column, and the second rod drives the first rod to rotate so that the folding plate is converted from the unfolded state to the folded state.

[0014] Based on this solution, the cooperation between the strip groove on the slide bar and the drive post on the second rod allows for precise control of the folding plate's transitions. Driven by the drive post, the slide bar moves along the strip groove, which in turn drives the second rod to rotate, achieving the desired unfolding and folding of the folding plate. The user can control the linear movement of the slide bar, which is converted into rotational motion of the second rod by the drive post, making operation more convenient.

[0015] Preferably, the first rod and the second rod are both provided with an opening mounting groove formed by two support plates and a connecting plate, and the opening direction of the mounting groove on the first rod is opposite to the opening direction of the mounting groove on the second rod.

[0016] Based on the above solution, the mounting slot allows for a certain degree of flexibility when connecting the first and second rods, helping to absorb and disperse impact forces generated during use and extending the service life of the components. The opening in the mounting slot provides additional support points, increasing the stability of the structure. When the two rods are connected through the mounting slot, the connection between them is more secure, reducing deformation or damage caused by external forces.

[0017] In a preferred solution, the driving member is a driving button, which is located at the bottom of the middle plate and is integrally formed with the bracket.

[0018] Based on this solution, the actuation button is located at the bottom of the middle plate, making it easily accessible and operable to control the vertical movement of the bracket, enhancing operational convenience. The actuation button is integrally formed with the bracket, eliminating additional components and connection points, making the overall structure more compact and reducing space usage, while also lowering manufacturing costs and assembly complexity.

[0019] Preferably, a groove is provided in the driving button, an elastic member is provided in the groove, one end of the elastic member abuts against the bottom of the driving button, and the other end of the elastic member abuts against the bottom of the middle plate.

[0020] Based on this solution, the elastic member provides a certain preload force, ensuring a tight fit between the actuation button and the intermediate plate, enhancing the stability and reliability of the overall structure. Furthermore, the elastic member provides elastic support for the actuation button, absorbing pressure and vibration generated by operating force or external impact, reducing direct impact on the actuation button and intermediate plate, and extending their service life.

[0021] In a preferred embodiment, a guide frame is provided at the bottom of the middle plate, a slide groove matching the guide column is provided on the bracket, and the drive button is set in the middle of the guide frame for sliding up and down and drives the bracket to slide from the unfolded position to the folded position on the guide frame.

[0022] Based on the above solution, the guide frame and slide groove provide stable guidance, ensuring that the bracket moves smoothly along the predetermined path during the unfolding and folding process, so that the driving button will not deviate during operation, reducing deviations and errors and enhancing the stability of the entire system.

[0023] In a preferred embodiment, two guide posts are provided in the guide frame, and the two guide posts are fixed vertically between the middle plate and the guide frame;

[0024] An elastic member is sleeved on each of the two guide columns, one end of the elastic member abuts against the bottom of the middle, and the other end of the elastic member abuts against the top of the bracket.

[0025] Based on the above solution, the elastic member stores energy when it is compressed or stretched. When released, the stored energy can assist the folding plate in unfolding, making the operation easier.

[0026] In a preferred solution, at least two groups of folding components are provided between each of the folding plates and the middle plate.

[0027] In a preferred embodiment, the folding plate is provided with an assembly portion for assembling the first rod, the assembly portion includes two assembly plates, an assembly groove is formed between the two assembly plates, and the first rod is rotatably connected to the assembly groove.

[0028] Based on the above solution, the first rod rotates freely within the assembly slot, ensuring a secure and reliable connection. The assembly slot structure not only simplifies the connection between the first rod and the folding plate, but also facilitates assembly and maintenance. Since the first rod can be directly inserted into the assembly slot and the assembly plates cooperate to achieve a rotational connection, it helps reduce wear and extend service life. It also provides a compact and effective way to utilize space, making the entire folding cart structure more compact and efficient.

[0029] The beneficial effects of the utility model are:

[0030] The present utility model provides a foldable cart, which controls the sliding of the slide rod through the driving member on the middle plate. The user can easily operate the cart to switch between the folded and unfolded states without the need for additional tools or complicated steps, which greatly simplifies the use process and saves time. The cart can be quickly unfolded from the folded state to the use state, or folded back from the use state to a compact form, which is easy to carry and store, and is particularly suitable for scenes with limited space or frequent movement. In addition, the design of the connecting rod assembly ensures the stability and load-bearing capacity of the cart in the unfolded state, meeting transportation needs. The structural design of the slide rod and connecting rod assembly also reduces the risk of wear and tear, enhances the durability and service life of the cart, and provides users with a convenient and reliable transportation solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0032] Figure 1 The utility model is a schematic diagram of the structure of a foldable cart in a folded state.

[0033] Figure 2 It is a structural schematic diagram of a foldable cart in the utility model.

[0034] Figure 3 yes Figure 2 Enlarged view of point A.

[0035] Figure 4 The utility model is a partial cross-sectional schematic diagram of the structure of a foldable cart.

[0036] Figure 5 yes Figure 4 Enlarged view of point B.

[0037] Figure 6 The utility model is a schematic diagram of the structure of a foldable cart in an unfolded state.

[0038] Description of the numbers in the figure:

[0039] 1-middle plate; 2-folding plate; 3-bracket; 4-connecting rod assembly; 41-first rod; 42-second rod; 5-sliding rod; 6-strip groove; 7-driving column; 8-driving member; 9-mounting groove; 10-guide frame; 11-guide column; 12-assembly part. DETAILED DESCRIPTION

[0040] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0041] See Figures 1-6 , this embodiment provides a foldable board 2 vehicle, comprising an intermediate board 1, with folding boards 2 provided at both ends of the intermediate board 1, the folding boards 2 being rotatably connected to the intermediate board 1, and a folding assembly being provided on the intermediate board 1;

[0042] The folding assembly includes a bracket 3 provided on the middle plate 1 and a plurality of connecting rod assemblies 4 for driving the folding plates 2 to unfold or fold. The bracket 3 is provided with a sliding rod 5. The driving end of the connecting rod assembly 4 is connected to the middle plate 1, and the output end of the connecting rod assembly 4 is connected to the folding plate 2.

[0043] The middle plate 1 is provided with a driving member 8 for driving the slide bar 5 to slide up and down, the slide bar 5 includes an expanded position for expanding the folding plate 2 and a folded position for folding the folding plate 2, and the connecting rod assembly 4 includes a contracted state and a supporting state. When the driving member 8 drives the slide bar 5 to slide from the folded position to the expanded position, the slide bar 5 drives the connecting rod assembly 4 to switch to the supporting state, and the folding plate 2 is converted from the folded state to the expanded state; when the driving member 8 drives the slide bar 5 to slide from the expanded position to the folded position, the slide bar 5 drives the connecting rod assembly 4 to switch to the supporting state, and the folding plate 2 is converted from the expanded state to the folded state.

[0044] In which, the connecting rod assembly 4 includes a first rod member 41 and a second rod member 42, the first rod member 41 includes an output end and a connecting end, the second rod member 42 includes a driving end and a connecting end, the output end of the first rod member 41 is rotatably connected to the folding plate 2, the connecting end of the first rod member 41 is hinged to the connecting end of the second rod member 42, and the driving end of the second rod member 42 is rotatably connected to the intermediate plate 1.

[0045] Specifically, the output end of the first rod 41 is connected to the foldable plate 2 via a rotational connection, allowing the foldable plate 2 to rotate about this connection point. The connecting end of the first rod 41 is hingedly connected to the connecting end of the second rod 42, allowing the two rods to rotate relative to each other. The driving end of the second rod 42 is also connected to the intermediate plate 1 via a rotational connection, allowing the rotation of the intermediate plate 1 to be transmitted to the second rod 42.

[0046] In addition, in order to achieve rapid unfolding and folding, based on any of the above solutions, the slide bar 5 is provided with a strip groove 6, and the second rod 42 is provided with a driving column 7 that cooperates with the strip groove 6;

[0047] When the driving member 8 drives the slide bar 5 to slide from the folded position to the unfolded position, the slide bar 5 drives the second rod 42 to rotate through the driving column 7, and the second rod 42 drives the first rod 41 to rotate so that the folding plate 2 is converted from the folded state to the unfolded state; when the driving member 8 drives the slide bar 5 to slide from the unfolded position to the folded position, the slide bar 5 drives the second rod 42 to rotate through the driving column 7, and the second rod 42 drives the first rod 41 to rotate, so that the folding plate 2 is converted from the unfolded state to the folded state.

[0048] Specifically, the slide bar 5 is provided with a strip groove 6, and the second rod 42 is provided with a drive post 7, which cooperates with the strip groove 6 on the slide bar 5. When the drive member 8 acts on the slide bar 5 to slide it from the folded position to the unfolded position, the strip groove 6 on the slide bar 5 guides the drive post 7 on the second rod 42, causing the second rod 42 to rotate. This rotation is transmitted through the first rod 41. Because of the connection between the first rod 41 and the second rod 42, the folding plate 2 transitions from the folded state to the unfolded state. Conversely, when the drive member 8 drives the slide bar 5 from the unfolded position back to the folded position, the interaction between the slide bar 5 and the drive post 7 again causes the second rod 42 to rotate, thereby driving the first rod 41, causing the folding plate 2 to return to the folded state.

[0049] In addition, both the first rod 41 and the second rod 42 are provided with an opening mounting groove 9 formed by two support plates and a connecting plate. The opening direction of the mounting groove 9 on the first rod 41 is opposite to the opening direction of the mounting groove 9 on the second rod 42.

[0050] Specifically, each of the first rod 41 and the second rod 42 is provided with a mounting slot 9. These mounting slots 9 are formed by two support plates and a connecting plate, forming an open structure. The mounting slots 9 of the first rod 41 and the mounting slots 9 of the second rod 42 open in opposite directions. That is, if the mounting slot 9 of the first rod 41 opens in one direction, the mounting slot 9 of the second rod 42 opens in the opposite direction.

[0051] The driving member 8 is a driving button, which is located at the bottom of the middle plate 1 and is integrally formed with the bracket 3 .

[0052] A groove is provided in the driving button, and an elastic member is provided in the groove. One end of the elastic member abuts against the bottom of the driving button, and the other end of the elastic member abuts against the bottom of the middle plate 1.

[0053] Specifically, the drive button is located at the bottom of the middle plate 1 and is integrally formed with the bracket 3. A mounting slot 9 is provided inside the drive button for accommodating an elastic member. One end of the elastic member contacts the bottom of the drive button, while the other end contacts the bottom of the middle plate 1, ensuring that the elastic member is properly positioned between the drive button and the middle plate 1. The elastic member can be a spring, for example.

[0054] In order to prevent the bracket 3 from shifting during operation, based on any of the above schemes, a guide frame 10 is provided at the bottom of the middle plate 1, and a sliding groove matching the guide column 11 is provided on the bracket 3. The driving button is set in the middle of the guide frame 10 for sliding up and down and drives the bracket 3 to slide from the unfolded position to the folded position on the guide frame 10.

[0055] The guide frame 10 is provided with two guide posts 11, and the two guide posts 11 are fixed vertically between the middle plate 1 and the guide frame 10;

[0056] An elastic member is sleeved on each of the two guide posts 11 , one end of the elastic member abuts against the bottom of the middle portion, and the other end of the elastic member abuts against the top of the bracket 3 .

[0057] Specifically, a guide frame 10 is provided at the bottom of the middle plate 1, and the guide frame 10 includes two guide columns 11, and the two guide columns 11 are vertically fixed between the middle plate 1 and the guide frame 10. A slide groove is designed on the bracket 3, and the slide groove matches the guide column 11, allowing the bracket 3 to slide on the guide frame 10. The drive button is set in the middle of the guide frame 10 and can slide up and down. Through this sliding, the drive button can push the bracket 3 to slide from the unfolded position along the guide frame 10 to the folded position. Each guide column 11 is provided with an elastic member, one end of the elastic member abuts against the bottom of the middle plate 1, and the other end abuts against the top of the bracket 3, forming a structure connecting the guide column 11, the middle plate 1 and the bracket 3.

[0058] In addition, at least two groups of folding components are provided between each folding plate 2 and the middle plate 1 .

[0059] Specifically, two groups of folding components are provided between each folding plate 2 and the middle plate 1 , and the two groups of folding components are respectively provided on the front and rear sides of each folding plate 2 .

[0060] The folding plate 2 is provided with an assembly portion 12 for assembling the first rod 41 . The assembly portion 12 includes two assembly plates. An assembly groove is formed between the two assembly plates. The first rod 41 is rotatably connected to the assembly groove.

[0061] The following is a further explanation of the present invention in conjunction with its working principle:

[0062] Pushing the drive button causes the slide bar 5 connected to the bracket 3 to slide up and down between the two guide posts 11 provided in the guide frame 10. The movement of the slide bar 5 is directly driven by the drive button, and the slide grooves on the guide frame 10 cooperate with the guide posts 11 to ensure that the slide bar 5 can slide smoothly between the deployed and folded positions. When the drive button is pushed to the deployed position, the slide bar 5 cooperates with the drive post 7 on the second rod 42 to drive the connecting rod assembly 4 from the retracted state to the supported state, thereby driving the first rod 41 to rotate, causing the folding plate 2 to deploy from the folded state. Conversely, when the drive button is pushed to the folded position, the slide bar 5 again acts on the second rod 42 through the drive post 7, causing the connecting rod assembly 4 to return to the retracted state. The first rod 41 then rotates, causing the folding plate 2 to fold, thereby achieving rapid conversion between the folded and deployed states of the cart.

[0063] The present invention is not limited to the above optional implementation methods. Under the premise of not conflicting with each other, the various solutions can be combined arbitrarily. Anyone can derive other forms of products under the inspiration of the present invention. However, no matter what changes are made in their shape or structure, all technical solutions that fall within the scope defined by the claims of the present invention fall within the scope of protection of the present invention.

Claims

1. A foldable cart, characterized by: It includes a middle plate, with folding plates respectively provided at both ends of the middle plate, the folding plates being rotatably connected to the middle plate, and a folding assembly being provided on the middle plate; The folding assembly includes a bracket provided on the intermediate plate and a plurality of connecting rod assemblies for driving the folding plate to unfold or fold. The bracket is provided with a sliding rod. The driving end of the connecting rod assembly is connected to the intermediate plate, and the output end of the connecting rod assembly is connected to the folding plate. The middle plate is provided with a driving member for driving the slide bar to slide up and down, the slide bar includes an expanded position for expanding the folding plate and a folded position for folding the folding plate, and the connecting rod assembly includes a contracted state and a supporting state. When the driving member drives the slide bar to slide from the folded position to the expanded position, the slide bar drives the connecting rod assembly to switch to the supporting state, and the folding plate is converted from the folded state to the expanded state; when the driving member drives the slide bar to slide from the expanded position to the folded position, the slide bar drives the connecting rod assembly to switch to the supporting state, and the folding plate is converted from the expanded state to the folded state.

2. A foldable cart according to claim 1, characterized in that: The connecting rod assembly includes a first rod and a second rod, the first rod includes an output end and a connecting end, the second rod includes a driving end and a connecting end, the output end of the first rod is rotatably connected to the folding plate, the connecting end of the first rod is hinged to the connecting end of the second rod, and the driving end of the second rod is rotatably connected to the intermediate plate.

3. A foldable cart according to claim 2, characterized in that: The sliding rod is provided with a strip groove, and the second rod is provided with a driving column matched with the strip groove; When the driving member drives the sliding rod to slide from the folded position to the unfolded position, the sliding rod drives the second rod to rotate through the driving column, and the second rod drives the first rod to rotate so that the folding plate is converted from the folded state to the unfolded state; when the driving member drives the sliding rod to slide from the unfolded position to the folded position, the sliding rod drives the second rod to rotate through the driving column, and the second rod drives the first rod to rotate so that the folding plate is converted from the unfolded state to the folded state.

4. A foldable cart according to claim 3, characterized in that: The first rod and the second rod are both provided with a mounting groove with an opening formed by two support plates and a connecting plate. The opening direction of the mounting groove on the first rod is opposite to the opening direction of the mounting groove on the second rod.

5. The foldable cart according to claim 1, characterized in that: The driving member is a driving button, which is located at the bottom of the middle plate and is integrally formed with the bracket.

6. The foldable cart according to claim 5, characterized in that: A groove is provided in the driving button, an elastic member is provided in the groove, one end of the elastic member abuts against the bottom of the driving button, and the other end of the elastic member abuts against the bottom of the middle plate.

7. The foldable cart according to claim 6, characterized in that: A guide frame is provided at the bottom of the middle plate, a slide groove matching the guide column is provided on the bracket, and the drive button is set in the middle of the guide frame for sliding up and down and drives the bracket to slide from the unfolded position to the folded position on the guide frame.

8. The foldable cart according to claim 7, characterized in that: Two guide posts are provided in the guide frame, and the two guide posts are fixed vertically between the middle plate and the guide frame; An elastic member is sleeved on each of the two guide columns, one end of the elastic member abuts against the bottom of the middle, and the other end of the elastic member abuts against the top of the bracket.

9. The foldable cart according to claim 1, characterized in that: At least two groups of folding components are provided between each folding plate and the middle plate.

10. The foldable cart according to claim 2, characterized in that: The folding plate is provided with an assembly portion for assembling the first rod, and the assembly portion includes two assembly plates. An assembly groove is formed between the two assembly plates, and the first rod is rotatably connected to the assembly groove.

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