Cargo compartment with a folding structure

Abstract

This utility model relates to the field of foldable cargo box technology, and discloses a cargo box with a folding structure, including two bottom plates. Two folding mechanisms are rotatably connected to the top of one of the bottom plates. A limiting mechanism is fixedly connected to the top of each folding mechanism. The limiting mechanism includes a limiting rod, the bottom of which is fixedly connected to the top of the folding mechanism. A frame is slidably connected to the outer side of the limiting rod. A limiting plate is rotatably connected to the inner side of the frame. A fixing plate is fixedly connected to the outer side of the limiting plate. A spring is fixedly connected to the inner side of the fixing plate. A connecting assembly is fixedly connected to the top of the folding mechanism. This utility model eliminates the need for additional manual operation after unfolding, shortening operation time and reducing labor intensity. By relying on the strong correlation between locking and the unfolding process of the folding plate, it structurally avoids human error, ensuring that the cargo box only locks when fully unfolded, preventing the folding plate from accidentally falling back.

Description

Technical Field

[0001] This utility model relates to the field of foldable cargo box technology, and in particular to a cargo box with a folding structure. Background Technology

[0002] Foldable cargo boxes are transport vehicle accessories that allow for flexible volume changes through foldable, detachable, or extendable designs. They are often paired with trucks, pickup trucks, and other vehicle types, and are widely used in urban delivery, mobile operations, industrial auxiliary transportation, and family outdoor scenarios. Compared with traditional fixed cargo boxes, they can maximize space utilization, reduce operating costs, enhance scenario adaptability, and are easier to meet compliance requirements, making them an important solution for optimizing the space of transport vehicles.

[0003] A search revealed Chinese Patent Publication No. CN223116470U, which discloses a truck body folding device. The device includes a truck body top plate, a truck body bottom plate, folding plates, a transmission mechanism, and an opening / closing mechanism. Both the top and bottom plates are equipped with guide rails containing graphite grooves. Multiple folding plates are positioned between the top and bottom plates, located on the sides of the truck body. The folding plates have both extended and folded states. The transmission mechanism is mounted on the folding plates and is adapted to slide within the graphite grooves. The opening / closing mechanism is positioned between and connected to adjacent folding plates, and is adapted to fold the plates. Under external force, the truck body has both an open (folded) and a closed (extended) state. This invention, by employing the above structure, allows the folding plates to open and close on the side walls of the truck body via the transmission mechanism and the opening / closing mechanism, thereby facilitating the loading and unloading of cigarette boxes and improving loading and unloading efficiency.

[0004] The aforementioned patent specification mentions that "most existing truck bodies have a tailgate, and the side walls of the cargo box are welded together. Since the side walls are fixed structures and cannot be moved, and the tailgate operating space is limited, the loading and unloading time for cigarette boxes is long, reducing loading and unloading efficiency. In this embodiment of the invention, by setting the transmission mechanism and the opening and closing mechanism, several folding plates can be installed on the side of the cargo box. These folding plates open and close under the action of the transmission mechanism and the opening and closing mechanism, thereby loading and unloading cigarette boxes and improving loading and unloading efficiency." While the aforementioned patent improves loading and unloading efficiency, it cannot lock the unfolded cargo box. Therefore, a cargo box with a folding structure is proposed to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a cargo box with a folding structure, which aims to solve the problem of not being able to lock the unfolded cargo box.

[0006] To achieve the above objectives, this utility model provides a cargo box with a folding structure, comprising two bottom plates, one of which has two folding mechanisms rotatably connected to its top, and a limiting mechanism fixedly connected to the top of each folding mechanism.

[0007] The limiting mechanism includes a limiting rod, the bottom of which is fixedly connected to the top of the folding mechanism. A frame is slidably connected to the outer side of the limiting rod, and a limiting plate is rotatably connected to the inside of the frame. A fixing plate is fixedly connected to the outer side of the limiting plate, and a spring is fixedly connected to the inner side of the fixing plate. A connecting assembly is fixedly connected to the top of the folding mechanism.

[0008] The folding mechanism includes a first folding plate, the bottom of which is rotatably connected to the top of the base plate, a second folding plate rotatably connected to the top of the first folding plate, and a connecting block rotatably connected to the top of the second folding plate.

[0009] The connecting assembly includes a connecting ring, a connecting block fixedly connected to the outer side of the connecting ring, a steel cable fixedly connected to the outer side of the connecting ring, a fixing plate fixedly connected to the end of the steel cable away from the connecting ring, a fixing block fixedly connected to the top of the fixing plate, and a hanging ring rotatably connected to the inside of the fixing block.

[0010] The inner side of the fixing plate is slidably connected to the outer side of the frame, and the other end of the spring is fixedly connected to the inside of the frame.

[0011] The outer side of the limiting rod is slidably connected to the outer side of the limiting plate, and the outer side of the frame is fixedly connected to the inside of the folding plate 2.

[0012] The outer side of the limiting plate is slidably connected to the inside of the second folding plate, and the outer side of the fixing plate is slidably connected to the inside of the second folding plate.

[0013] The bottom of the fixed plate is slidably connected to the top of another base plate, and the outer side of the steel cable is slidably connected to the top of another base plate.

[0014] One of the base plates is fixedly connected to the inner sides of the multiple connecting blocks on all four sides, and the outer side of the hanging ring is in contact with the top of the fixed plate.

[0015] 1. In this utility model, a frame is used in conjunction with a limiting plate and a limiting rod. The limiting plate is used in conjunction with a fixing plate, and the fixing plate is used in conjunction with a spring, thereby achieving the effect of locking the unfolded cargo compartment. The locking process is fully automatic, eliminating the need for additional manual operation after unfolding, shortening the operation time and reducing labor intensity. Relying on the strong correlation between locking and the unfolding process of the folding plate, human operation errors are avoided from the structure, ensuring that the cargo compartment is locked only when fully unfolded, and preventing the folding plate from falling back unexpectedly.

[0016] 2. In this utility model, the connecting ring is used in conjunction with the steel cable, the steel cable is used in conjunction with the fixing plate, the fixing plate is used in conjunction with the fixing block, and the fixing block is used in conjunction with the hanging ring, thereby reducing the time of operation of the staff, eliminating the cumbersome process of traditional multi-point hooking and step-by-step lifting, greatly reducing the time spent unfolding a single cargo box, accelerating the turnover of operations in logistics distribution, freight loading and unloading and other scenarios, and improving overall efficiency. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0018] Figure 1 This is a three-dimensional schematic diagram of a cargo box with a folding structure proposed in this utility model;

[0019] Figure 2 This is a schematic diagram of a folding panel of a cargo compartment with a folding structure proposed in this utility model.

[0020] Figure 3 This is a schematic diagram of a connecting block structure for a cargo compartment with a folding structure proposed in this utility model;

[0021] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0022] 1. Base plate; 2. Folding mechanism; 21. Folding plate one; 22. Folding plate two; 23. Connecting block; 3. Restriction mechanism; 31. Frame; 32. Restriction plate; 33. Fixing plate; 34. Spring; 35. Restriction rod; 4. Connecting assembly; 41. Connecting ring; 42. Steel cable; 43. Fixing plate; 44. Fixing block; 45. Hanging ring. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Reference Figure 1 , Figure 3 and Figure 4The present invention provides an embodiment of a cargo box with a folding structure, comprising two bottom plates 1. The two bottom plates 1 serve as the basic load-bearing structure of the entire folding cargo box, providing stable support for the folding mechanism 2 above, ensuring that subsequent unfolding and folding actions always revolve around a fixed reference, and avoiding displacement of the cargo box shape due to instability at the bottom. Two folding mechanisms 2 are rotatably connected to the top of one of the bottom plates 1. The two folding mechanisms 2 are symmetrically distributed on the top of the bottom plate 1, and can realize simultaneous unfolding and folding, ensuring that the structural actions on both sides of the cargo box are consistent, and avoiding deformation caused by uneven force on one side.

[0025] A limiting mechanism 3 is fixedly connected to the top of the folding mechanism 2. The limiting mechanism 3 can lock the shape of the folding mechanism 2 in time after it is unfolded to prevent the folding mechanism 2 from falling back unexpectedly during transportation and ensure the stability of the cargo box after unfolding. The limiting mechanism 3 includes a limiting rod 35, which is the core trigger component for the limiting mechanism 3 to achieve locking. Its cooperation with the limiting plate 32 can directly determine whether the locking action is effective. The bottom of the limiting rod 35 is fixedly connected to the top of the folding mechanism 2. This fixing method allows the limiting rod 35 to move synchronously with the unfolding of the folding mechanism 2, ensuring that the locking action and the unfolding action of the folding mechanism 2 are precisely linked.

[0026] A frame 31 is slidably connected to the outer side of the limiting rod 35. The frame 31 provides installation and movement space for components such as the limiting rod 35 and the limiting plate 32, and can regulate the movement trajectory of each component to avoid component displacement affecting the locking effect. The limiting plate 32 is rotatably connected inside the frame 31. The limiting plate 32 can be adjusted by rotation to avoid the limiting rod 35 when it slides in, and reset to lock after the limiting rod 35 is in place. It is a key locking execution component in the limiting mechanism 3. The outer side of the limiting rod 35 is slidably connected to the outer side of the limiting plate 32. This sliding fit allows the limiting rod 35 to smoothly push the limiting plate 32 to rotate when it contacts the limiting plate 32, and also provides a stable contact basis for the subsequent reset of the limiting plate 32 to lock the limiting rod 35.

[0027] A fixed plate 33 is fixedly connected to the outer side of the limiting plate 32. The fixed plate 33 can transmit the tension of the spring 34 to the limiting plate 32, ensuring that the elastic force of the spring 34 can be accurately applied to the limiting plate 32, so that it can maintain its initial position or smoothly reset when no external force is applied. The inner side of the fixed plate 33 is slidably connected to the outer side of the frame 31. This slidable connection can limit the movement direction of the fixed plate 33, so that it can only slide smoothly along the outer side of the frame 31, thereby driving the limiting plate 32 to move along a preset trajectory and avoiding deviation. A spring 34 is fixedly connected to the inner side of the fixed plate 33. The spring 34 has elastic reset capability. When the limiting plate 32 is squeezed outward by the limiting rod 35, it stores elastic potential energy. After the limiting rod 35 slides in completely, it releases the potential energy to pull the limiting plate 32 to reset, providing power for the locking action.

[0028] The other end of the spring 34 is fixedly connected to the inside of the frame 31. This fixing method ensures that the spring 34 is always in a stable stress state, avoiding the failure of elastic force transmission due to loose connection, and ensuring reliable reset action. The top of the folding mechanism 2 is fixedly connected to the connecting component 4. The connecting component 4 can serve as the point of application of external force such as a crane. The folding mechanism 2 can be fully unfolded through a single connection point without the need to operate multiple parts separately, reducing unfolding steps and time. The folding mechanism 2 includes a folding plate 21, which is the basic component connecting the folding mechanism 2 and the bottom plate 1. Its rotational characteristics provide the initial rotation fulcrum for the overall folding of the cargo box. The bottom of the folding plate 21 is rotatably connected to the top of the bottom plate 1. This rotational connection allows the folding plate 21 to rotate flexibly around the top of the bottom plate 1, realizing the folding and unfolding of the cargo box in the height direction. The top of the folding plate 21 is rotatably connected to a folding plate 22. The rotational cooperation between the folding plate 22 and the folding plate 21 can realize two-stage folding, greatly improving the space compression rate of the cargo box after folding. At the same time, it can form a continuous side wall structure when unfolded, ensuring the cargo box volume.

[0029] The outer side of the fixed plate 33 is slidably connected to the inside of the folding plate 22. This slidable connection allows the fixed plate 33 to move smoothly inside the folding plate 22, preventing changes in the shape of the folding plate 22 from affecting the normal operation of the limiting mechanism 3. The outer side of the limiting plate 32 is slidably connected to the inside of the folding plate 22. This design limits the range of motion of the limiting plate 32 to the inside of the folding plate 22, ensuring that the limiting plate 32 always maintains a corresponding positional relationship with the limiting rod 35, without affecting the locking engagement. The outer side of the frame 31 is fixedly connected to the inside of the folding plate 22. The frame 31 is fixed to the folding plate 22. The limiting mechanism 3 can move synchronously with the folding plate 22, ensuring that the locking action and the unfolding rhythm of the folding mechanism 2 are consistent. The top of the folding plate 22 is rotatably connected to a connecting block 23. The connecting block 23 can be rotated to adjust the angle, which facilitates precise docking with another base plate 1, ensuring that the two base plates 1 can be stably connected into a whole. The other base plate 1 is fixedly connected to the inside of multiple connecting blocks 23 on all four sides. Multiple connecting blocks 23 are evenly distributed around the base plate 1, which can fix the base plate 1 from multiple directions, ensuring the structural stability of the two base plates 1 after connection and preventing loosening during transportation.

[0030] Reference Figure 1 and Figure 2The connecting component 4 includes a connecting ring 41, which is the connection medium between the connecting component 4 and the folding mechanism 2. It can transmit the tension of the steel cable 42 to the folding mechanism 2. A connecting block 23 is fixedly connected to the outside of the connecting ring 41. This fixing method allows the connecting ring 41 and the connecting block 23 to form an integral whole, ensuring that the tension can be evenly transmitted to the folding plate 22 through the connecting block 23, avoiding excessive local stress that could damage the components. The steel cable 42 is fixedly connected to the outside of the connecting ring 41. The steel cable 42 has high strength and flexibility, and can adapt to certain angle changes while transmitting tension, ensuring that external forces can be stably applied to the folding mechanism 2.

[0031] The outer side of the steel cable 42 is slidably connected to the top of another base plate 1. This slidable connection allows the steel cable 42 to move flexibly on the top of the base plate 1, avoiding jamming of the steel cable 42 due to changes in the position of the base plate 1, and ensuring smooth transmission of tension. The end of the steel cable 42 away from the connecting ring 41 is fixedly connected to a fixing plate 43. The fixing plate 43 can concentrate the tension of multiple steel cables 42, ensuring that external force can be synchronously transmitted to each steel cable 42 through the fixing plate 43, so as to realize the synchronous unfolding of the folding mechanism 2. The bottom of the fixing plate 43 is slidably connected to the top of another base plate 1. This slidable connection allows the fixing plate 43 to move smoothly on the top of the base plate 1, avoiding uneven force on each steel cable 42 due to the offset of the fixing plate 43.

[0032] A fixing block 44 is fixedly connected to the top of the fixing plate 43. The fixing block 44 provides installation support for the hanging ring 45, ensuring that the hanging ring 45 rotates stably and does not fall off. The hanging ring 45 is rotatably connected inside the fixing block 44. The hanging ring 45 can be rotated to adjust its angle, facilitating quick connection with external force equipment such as cranes and reducing docking time. The outer side of the hanging ring 45 contacts the top of the fixing plate 43. This contact limits the rotation range of the hanging ring 45 to prevent excessive rotation and collision with parts. It also provides auxiliary support when under stress, enhancing the load-bearing stability of the hanging ring 45.

[0033] Working principle: When the operator needs to unfold the folded folding plate 1 21 and folding plate 22, they can connect to the crane through the hanging ring 45. The hanging ring 45 pulls the fixed plate 43 upward, and the fixed plate 43 pulls the top plate upward, thus avoiding the need to connect hooks to the connecting blocks 23 at different positions, thereby reducing the unfolding operation time.

[0034] At this point, the top plate will pull the second folding plate 22 upwards. The second folding plate 22 will then lift the first folding plate 21 together via the hinge. The top of the first folding plate 21 is equipped with a limiting rod 35. The limiting rod 35 will then press the limiting plate 32, causing the limiting plate 32 to slide outwards. The limiting rod 35 will then slide into the interior of the frame 31. At this point, the limiting plate 32 will be pulled back to its original position by the spring 34. The limiting rod 35 will then be restricted by the limiting plate 32, thereby achieving the effect of unfolding and locking the folded cargo compartment.

[0035] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art will understand that all or part of the processes for implementing the above embodiments and equivalent variations made in accordance with the claims of this application are still within the scope of this application.

Claims

1. A cargo box with a folding structure, comprising two floor panels, characterized in that: Two folding mechanisms are rotatably connected to the top of one of the base plates, and a limiting mechanism is fixedly connected to the top of the folding mechanism; The limiting mechanism includes a limiting rod, the bottom of which is fixedly connected to the top of the folding mechanism. A frame is slidably connected to the outer side of the limiting rod, and a limiting plate is rotatably connected to the inside of the frame. A fixing plate is fixedly connected to the outer side of the limiting plate, and a spring is fixedly connected to the inner side of the fixing plate. A connecting assembly is fixedly connected to the top of the folding mechanism.

2. A cargo compartment with a folding structure according to claim 1, characterized in that: The folding mechanism includes a first folding plate, the bottom of which is rotatably connected to the top of the base plate, a second folding plate rotatably connected to the top of the first folding plate, and a connecting block rotatably connected to the top of the second folding plate.

3. A cargo compartment with a folding structure according to claim 2, characterized in that: The connecting assembly includes a connecting ring, a connecting block fixedly connected to the outer side of the connecting ring, a steel cable fixedly connected to the outer side of the connecting ring, a fixing plate fixedly connected to the end of the steel cable away from the connecting ring, a fixing block fixedly connected to the top of the fixing plate, and a hanging ring rotatably connected to the inside of the fixing block.

4. A cargo box with a folding structure according to claim 1, characterized in that: The inner side of the fixing plate is slidably connected to the outer side of the frame, and the other end of the spring is fixedly connected to the inside of the frame.

5. A cargo compartment with a folding structure according to claim 2, characterized in that: The outer side of the limiting rod is slidably connected to the outer side of the limiting plate, and the outer side of the frame is fixedly connected to the inside of the second folding plate.

6. A cargo box with a folding structure according to claim 2, characterized in that: The outer side of the limiting plate is slidably connected to the inside of the second folding plate, and the outer side of the fixing plate is slidably connected to the inside of the second folding plate.

7. A cargo box with a folding structure according to claim 3, characterized in that: The bottom of the fixed plate is slidably connected to the top of another base plate, and the outer side of the steel cable is slidably connected to the top of another base plate.

8. A cargo box with a folding structure according to claim 3, characterized in that: The other base plate is fixedly connected to the inside of the multiple connecting blocks on all four sides, and the outer side of the hanging ring is in contact with the top of the fixed plate.

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