Trolley capable of being folded and stored

Abstract

The utility model relates to the technical field of machinery, in particular to a trolley capable of being folded for storage, which comprises trolley side nets, a trolley base and at least one rotary connecting structure arranged between each trolley side net and the trolley base. Each rotary connecting structure can drive the corresponding trolley side net to rotate on the trolley base, so that the trolley is converted into a folded storage state, and in the folded state, the trolley side nets rotate to the position parallel to or close to the trolley base through the rotary connecting structures, so that the occupied space is reduced, and storage is convenient; the rotary connecting structure allows the trolley side net to rotate and be stored smoothly, so that the trolley is folded and stored to form a more compact storage form, the space needed by trolley storage is greatly reduced, the trolley is more efficient in the transportation and storage process, and the folding trolley can be used in multiple occasions such as a warehouse, a factory and a distribution center. And different logistics requirements can be flexibly met.

Description

Technical Field

[0001] This utility model relates to the field of mechanical technology, and in particular to a foldable and storable trolley. Background Technology

[0002] In modern industry and logistics, trolleys are widely used in various stages of material handling, storage, and transportation. Their structural design directly affects the efficiency and ease of operation of the trolley. Traditional trolleys generally consist of a base, wheels, and side nets. The base serves as a supporting structure, bearing the weight of the goods; the side nets provide additional protection and support to prevent goods from falling off during movement.

[0003] Currently, many trolleys use a fixed connection structure between the base and the side net. While this design ensures the stability of the trolley and the overall structure to a certain extent, it also has obvious drawbacks. First, because the connection between the base and the side net is fixed, the trolley cannot be folded and stored after use, resulting in a large size and occupying more storage space. Second, this fixed connection structure limits the portability of the trolley, making operation cumbersome in situations where frequent movement and reconfiguration of the trolley are required. For example, in warehouses or factories, when it is necessary to temporarily adjust the placement or storage status of the trolley, the inability to fold it often requires additional space and manpower.

[0004] This utility model was proposed in response to the shortcomings of the existing technology. Utility Model Content

[0005] The above-mentioned technical problem is that the existing trolleys cannot be folded and stored, resulting in a large size of the trolleys and occupying a lot of storage space.

[0006] The technical solution adopted by this utility model to solve its technical problem is:

[0007] A foldable trolley has an unfolded state and a folded state. It includes a trolley side net, a trolley base, and a rotating connection structure. There are two trolley side nets, which are respectively located on both sides of the trolley base. Each trolley side net is connected to the trolley base by at least one rotating connection structure. Each rotating connection structure can drive the corresponding trolley side net to rotate on the trolley base, so that the trolley can be converted to the folded state.

[0008] As described above, a foldable and storable trolley has a rotating connection structure including a trolley base connector connected to the trolley base and a trolley side net connector connected to the trolley side net. A rotating component is provided between the trolley side net connector and the trolley base connector to enable them to rotate. The trolley side net connector can rotate on the trolley base connector via the rotating component, and the trolley side net connector can drive the trolley side net to rotate towards the trolley base.

[0009] The beneficial effects of this utility model are:

[0010] This utility model relates to a foldable storage trolley, specifically in the field of mechanical technology. It includes a trolley side net, a trolley base, and a rotating connection structure. Each side net and the trolley base are connected by at least one rotating connection structure. Each rotating connection structure enables the corresponding side net to rotate on the trolley base, allowing the trolley to be folded and stored. In the folded state, the side net rotates to a position parallel to or close to the trolley base via the rotating connection structure, thereby reducing space occupation and facilitating storage. The rotating connection structure allows the side net to rotate and fold smoothly, creating a more compact storage configuration and significantly reducing the space required for trolley storage. This makes the trolley more efficient during transportation and storage. The folding trolley can be used in various settings, such as warehouses, factories, and distribution centers, flexibly addressing different logistics needs.

[0011] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0012] Figure 1 This is a schematic diagram and a partially enlarged schematic diagram of the trolley of this utility model;

[0013] Figure 2 This is an exploded view of the rotary connection structure of this utility model;

[0014] Figure 3 This is a top view of the rotary connection structure of this utility model;

[0015] Figure 4 for Figure 3 Cross-sectional view along line AA (rotary connection structure is in a folded storage state);

[0016] Figure 5 for Figure 3 Cross-sectional view along line AA (rotary connection structure in unfolded state);

[0017] Figure 6 for Figure 3A cross-sectional view along line AA and a partially enlarged view (the trolley side net connector rotates to a specified angle on the trolley base connector, enabling it to detach).

[0018] Figure 7 for Figure 3 Cross-sectional view along line BB (rotary connection structure is in a folded storage state).

[0019] Figure 8 This is a schematic diagram of the rotary connection structure of this utility model (the state of the locking position and the locking slot).

[0020] Figure 9 This is a top view of the rotary connection structure of this utility model (the locking position and the bayonet are engaged).

[0021] Figure 10 for Figure 9 Cross-sectional view along line CC;

[0022] Figure 11 This is a schematic diagram of the structure of the trolley of this utility model (hidden mesh door and back mesh).

[0023] Figure 12 This is an exploded view of the trolley of this utility model (hidden mesh door and back mesh).

[0024] Figure 13 This is a schematic diagram and a partially enlarged schematic diagram of the column rotation structure of this utility model;

[0025] Figure 14 This is one of the exploded schematic diagrams of the column rotation structure of this utility model;

[0026] Figure 15 This is the second exploded view of the column rotation structure of this utility model;

[0027] Figure 16 This is a top view of the column rotation structure of this utility model;

[0028] Figure 17 for Figure 16 Cross-sectional view along line DD and enlarged view of a portion thereof. Detailed Implementation

[0029] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0030] like Figures 1 to 17As shown, this embodiment of a foldable trolley has an unfolded state and a folded storage state. It includes a trolley side net 2, a trolley base 1, and a rotating connection structure. There are two trolley side nets 2, which are respectively disposed on both sides of the trolley base 1. Each trolley side net 2 is connected to the trolley base 1 by at least one rotating connection structure. Each rotating connection structure can drive the corresponding trolley side net 2 to rotate on the trolley base 1, so that the trolley 100 can be converted to the folded storage state.

[0031] Specifically, in the unfolded state, the trolley side net 2 and the trolley base 1 form a stable frame, with a certain angle between them, perpendicular or nearly perpendicular to each other, to provide a larger space for placing items or providing protection. At this time, the rotating connection structure is in the unfolded fixed position, and the trolley base connector 3 and the trolley side net connector 4 are kept locked by the limiting component 6 to ensure that the trolley side net 2 is not easily retracted accidentally.

[0032] In the folded state, the trolley side net 2 rotates to a position parallel to or close to the trolley base 1 via a rotating connection structure, thereby reducing space occupation and facilitating storage. The rotating connection structure allows the trolley side net 2 to rotate and be stored smoothly, enabling the trolley 100 to be folded and stored, forming a more compact storage form. This greatly reduces the space required for storing the trolley 100, making the trolley more efficient in transportation and storage. The folding trolley can be used in various settings, such as warehouses, factories, and distribution centers, and can flexibly meet different logistics needs.

[0033] like Figures 1 to 17 As shown, the rotating connection structure of this embodiment includes a trolley base connector 3 connected to the trolley base 1 and a trolley side net connector 4 connected to the trolley side net 2. A rotating component 5 is provided between the trolley side net connector 4 and the trolley base connector 3 to enable them to rotate and connect. The trolley side net connector 4 can rotate on the trolley base connector 3 through the rotating component 5, and the trolley side net connector 4 can drive the trolley side net 2 to rotate towards the trolley base 1, thereby folding and storing the trolley 100.

[0034] Specifically, the design of the rotating component 5 provides a stable center of rotation, allowing the trolley side net connector 4 to rotate freely relative to the trolley base connector 3, so that the trolley side net 2 can rotate on the trolley base 1. This allows the trolley side net 2 to be rotated to a position close to the trolley base 1 when needed, so that the trolley 100 can be folded to form a more compact storage form.

[0035] Furthermore, when the trolley is finished or needs to be stored, the user only needs to rotate the trolley side net connector 4 inward on the trolley base connector 3 (i.e., rotate it towards the trolley base 1), forcing the trolley side net 2 to rotate closer to the trolley base 1, thereby folding the trolley 100 and reducing the space occupied by the trolley 100. This folding mechanism achieves portability that traditional fixed structures cannot achieve. The rotating connection structure allows the trolley to be folded when not in use, thereby greatly reducing the space required for storage and making the trolley more efficient in transportation and storage. Folding trolleys can be used in many situations, such as in warehouses, factories, and distribution centers, and can flexibly meet different logistics needs.

[0036] Furthermore, through a simple rotation action, users can quickly and easily fold or unfold the trolley 100, reducing operational complexity. This design not only improves work efficiency but also enhances the user experience.

[0037] like Figures 1 to 17 As shown, the trolley base connector 3 of this embodiment is provided with a receiving groove 31, the trolley side net connector 4 is located in the receiving groove 31, the top of the trolley base connector 3 is provided with a first opening 32 communicating with the receiving groove 31, the first opening 32 allows the top of the trolley side net connector 4 to extend out; the side wall of the trolley base connector 3 is provided with a second opening 33 communicating with the receiving groove 31, the second opening 33 allows the trolley side net connector 4 to rotate in and out of the receiving groove 31.

[0038] Specifically, the receiving groove 31 provides a stable storage space for the trolley side net connector 4. The first opening 32 communicates with the receiving groove 31, allowing the top of the trolley side net connector 4 to extend and connect with the trolley side net 2. This ensures that when the trolley is deployed, most of the trolley side net connector 4 is located in the receiving groove 31. The trolley base connector 3 can protect the trolley side net connector 4, reduce damage to the trolley side net connector 4 caused by collisions or other factors during the use of the trolley 100, ensure the normal operation of the rotating connection structure, and extend its service life.

[0039] Specifically, the second opening 33 is also connected to the receiving slot 31, providing a channel that allows the trolley side net connector 4 to rotate. When the trolley 100 needs to be folded, the user can rotate the side net connector 4 into or out of the receiving slot through the second opening 33, thereby realizing the rotation of the trolley side net 2 on the trolley base 1 to achieve the folding and storage function of the trolley 100. This design reduces the obstruction during rotation and makes the operation smoother.

[0040] With its accommodating slots and two openings, users can quickly unfold and fold the trolley without complicated steps, enhancing its practicality and user experience.

[0041] Furthermore, the receiving groove 31 can effectively fix the position of the trolley side net connector 4, preventing it from becoming loose or falling off when not in use, thus enhancing the overall stability of the trolley structure. In addition, when folded, the trolley side net connector 4 is contained in the groove, effectively protecting it from external damage and extending the service life of the trolley.

[0042] like Figures 1 to 17 As shown, the receiving groove 31 of this embodiment includes a receiving section 311 and at least one rotating section 312. At least one of the rotating sections 312 is located on one side of the receiving section 311, the trolley side net connector 4 is located in the receiving section 311, and the rotating component 5 is located in the rotating section 312.

[0043] Specifically, the receiving section 311 is specifically designed to receive the trolley side net connector 4, ensuring that it can be stored neatly and safely when not in use, while the rotating section 312 provides an independent space for the rotating assembly 5, avoiding interference between the receiving section and the rotating mechanism.

[0044] Furthermore, the arrangement of the rotating section 312 allows the rotating assembly 5 to operate flexibly, with the trolley side net connector 4 rotating at the receiving section 311. This design ensures smoothness and efficiency during rotation.

[0045] Preferably, the design of the receiving slot separates the structural parts with different functions, which enhances the clarity of the overall structure and allows users to more intuitively understand the function and role of each part during operation.

[0046] Preferably, the receiving section 311 can effectively prevent the trolley side net connector 4 from being damaged by the external environment when not in use, while the rotating section 312 focuses on providing the rotation function. This division of labor design enhances the protection of each part.

[0047] Preferably, in this embodiment, there are two rotating sections 312, which are respectively located on both sides of the receiving section 311. The design of the two rotating sections 312 can form a symmetrical structure on both sides of the receiving section 311. Such symmetry helps to balance the force when the trolley side net connector 4 rotates, providing more balanced support, reducing shaking and instability during operation, ensuring safety during use, and making the trolley safer and more reliable during use.

[0048] Furthermore, the two rotating sections 312 cooperate with the rotating assembly 5 to prevent the trolley side net connector 4 from coming out of the receiving section 311 from the second opening 33, thus ensuring the normal operation of the trolley side net connector 4 on the trolley base connector 3.

[0049] like Figures 1 to 17As shown, in this embodiment, the length direction of the rotating section 312 is arranged along the length direction of the trolley base connector 3. The rotating component 5 can slide up and down along the length direction of the rotating section 312 so that the trolley side net connector 4 can slide up and down within the receiving section 311.

[0050] Specifically, the rotation section 312 is aligned with the length direction of the base connector 3, which ensures that the rotation assembly 5 and the overall structure of the trolley maintain good alignment during operation, thus helping to improve the stability of the connection.

[0051] Specifically, the rotating component 5 can slide up and down along the length of the rotating section 312, allowing the trolley side net connector 4 to also slide up and down within the receiving section 311. This sliding mechanism provides users with greater operational flexibility. By setting the sliding function of the rotating section 312, the space of the receiving section 311 can be utilized more effectively, allowing the trolley side net connector 4 to slide up and down.

[0052] When not in use, it can be stored in a suitable location to prevent it from taking up too much space.

[0053] Furthermore, the up-and-down sliding function of the rotating component 5 allows users to quickly adjust the position of the trolley side net connector 4 according to actual needs, making operation more convenient and adaptable. Specifically, the trolley side net connector 4 is designed to slide up and down at the trolley base connector 3. When the trolley side net connector 4 rotates on the trolley base connector 3, it can slide up and down at the trolley base connector 3. The position of the trolley side net connector 4 on the trolley base connector 3 can be adjusted according to the thickness of the trolley side net 2 so that the trolley side net 2 can be placed parallel on the trolley base 1, which can effectively improve the overall stability.

[0054] Furthermore, the thickness of the trolley side net 2 may vary in different usage scenarios. This design allows users to quickly adjust the position of the trolley side net connector 4 to accommodate different specifications of the trolley side net 2, avoiding difficulties in folding and storing the trolley 100 due to size mismatch.

[0055] Furthermore, the design of the trolley side net connector 4 sliding up and down at the trolley base connector 3 allows the trolley side net 2 to be stored in a suitable position when not in use, reducing space occupation and improving overall space utilization efficiency.

[0056] like Figures 1 to 17 As shown, one end of the rotating section 312 in this embodiment is connected to the first opening 32. The rotating component 5 can be disengaged from the trolley base connector 3 through the first opening 32, so that the trolley side net connector 4 can be disengaged from the trolley base connector 3 through the first opening 32.

[0057] Specifically, through the design of the first opening 32, the rotating component 5 and the trolley side net connector 4 connected thereto can be detached from the base connector 3. This design reduces the tools and steps required to detach the trolley side net connector 4 from the trolley base connector 3, making maintenance or replacement operations more efficient. Users can quickly install or adjust the rotating component 5 through the first opening 32. This open design makes the overall structure more flexible and the operation more convenient.

[0058] Furthermore, this design makes it easier to replace or upgrade the various components of the trolley, improving the modularity of the equipment and allowing users to configure it flexibly according to their needs.

[0059] When it is necessary to clean or replace the rotating component 5 or the side net connector 4, the user can simply remove the trolley side net connector 4 from the trolley base connector 3 through the first opening 32, avoiding the cumbersome disassembly and assembly process and saving time and labor costs.

[0060] This design makes the overall structure simpler, reduces unnecessary connections and fixations, lowers potential points of failure, and improves the reliability of the equipment.

[0061] Furthermore, the open design of the rotating connection structure can accommodate different types of rotating components 5, trolley side net connectors 4, or trolley base connectors 3, allowing users to select and replace them as needed, thus enhancing the applicability of the trolley.

[0062] like Figures 1 to 17 As shown, the rotating section 312 of this embodiment includes a moving area 313 and a disengagement area 314 connected sequentially from bottom to top. The disengagement area 314 communicates with the first opening 32. The width of the disengagement area 314 is smaller than the width of the moving area 313. The rotating assembly 5 is provided with a disengagement guide plane 51. When the rotating assembly 5 rotates until the disengagement guide plane 51 is parallel or nearly parallel to the side wall of the moving area 313, the rotating assembly 5 can move into the disengagement area 314 and disengage from the first opening 32.

[0063] Specifically, the design of the release guide plane 51 ensures that the rotating component 5 can only enter the release area 314 when the rotating component 5 rotates to a specific position (i.e., when the release guide plane 51 is parallel or nearly parallel to the side wall of the moving area 313). At this time, the release guide plane 51 is close to or abuts against the side wall of the moving area 313. This design can effectively prevent the trolley side net connector 4 from accidentally dislodging from the trolley base connector 3 or from incorrect operation, providing good safety.

[0064] The difference in width between the disengagement area 314 and the moving area 313 ensures that the rotating component 5 must follow a specific path when moving, thereby ensuring that the movement trajectory of the rotating component 5 is more controllable and preventing malfunctions or damage caused by misoperation.

[0065] By setting the width of the detachment area 314 to be smaller than that of the movement area 313, users can be effectively guided to follow a specific sequence and method during disassembly, avoiding assembly problems caused by improper operation. Specific steps are required to detach the trolley side net connector 4 from the trolley base connector 3, ensuring that the trolley side net connector 4 can only be detached or assembled from the trolley base connector 3 when the rotating component 5 is in the correct position. This reduces the risk of misoperation and improves safety.

[0066] The guide plane design allows users to more intuitively judge the state of the rotating component 5 during disassembly or installation, ensuring that it is in the correct position and helping to improve the accuracy of operation.

[0067] like Figures 1 to 17 As shown, in this embodiment, the width of the rotating segment 312 is greater than the outer diameter of the rotating component 5, so that the rotating component 5 can move in the width direction of the rotating segment 312. This design allows the rotating component 5 to rotate within the rotating segment 312, while still providing adjustment space. This means that there is sufficient space for position adjustment during the rotation of the rotating component 5. This flexible spatial design can accommodate trolley side nets 2 of different lengths and shapes. The mobility of the rotating component 5 within the rotating segment 312 ensures that the trolley side net 2 can rotate smoothly and accurately dock to the trolley base 1 for storage, avoiding improper storage due to insufficient space.

[0068] Furthermore, the above design allows users to experience greater freedom and flexibility during operation, avoiding operational difficulties caused by space limitations and improving the overall user experience.

[0069] like Figures 1 to 17 As shown, in this embodiment, the rotating section 312 is provided with a limiting slot 315 corresponding to the rotating component 5 on the side near the second opening 33. When the rotating component 5 is engaged in the limiting slot 315, the trolley side net connector 4 can rotate away from the second opening 33. With this design, when it is necessary to take out the required goods from the trolley 100, the user can operate the trolley side net 2 or the trolley side net connector 4 to make the rotating component 5 engage in the limiting slot 315. At this time, the trolley side nets 2 on both sides move away from each other and move away from the trolley base 1 to expand the internal space of the trolley 100, making it easier for the user to take out the goods from the trolley 100.

[0070] Preferably, by manipulating the trolley side net 2 or the trolley side net connector 4, the user can easily insert the rotating component 5 into the limiting slot 315, thereby quickly unfolding the trolley side net 2 on the trolley base 1, rapidly expanding the internal space of the trolley 100, improving the efficiency of picking up goods, or increasing the operating space of picking tools such as forklifts, thereby reducing unloading time.

[0071] Preferably, the trolley side net connector 4 in this embodiment includes a first connecting segment 41 and a second connecting segment 42 connected sequentially from top to bottom. A locking position 43 is provided at the connection between the first connecting segment 41 and the second connecting segment 42. A locking slot 321 corresponding to the locking position 43 is provided on the first opening 32. When the rotating component 5 is engaged in the limiting slot 315, the trolley side net connector 4 can rotate away from the second opening 33, and the locking position 43 can engage with the locking slot 321. Through this design, the locking position 43 and the locking slot 321 can further provide positioning functions for the trolley side net connector 4 and the trolley base connector 3, and provide clear positioning for the trolley side net connector 4, so that the trolley side net connector 4 can be stably maintained in the predetermined position after rotation, reducing the swaying or displacement caused by movement.

[0072] Furthermore, when the rotating component 5 is engaged in the limiting slot 315, the combination of the locking position 43 and the locking opening 321 forms an additional support point, reducing the stress on the rotating component 5 after it is engaged in the limiting slot 315, ensuring the service life of the rotating component 5. Moreover, through the dual fixing and positioning of the two structures of the locking position 43 and the locking opening 321, as well as the rotating component 5 and the limiting slot 315, the extent of the unfolding of the side nets 2 of the two trolleys on the trolley base 1 is limited, preventing the side nets 2 of the two trolleys from rotating too much on the trolley base 1, which would cause the internal space of the trolley 100 to expand too much, resulting in difficulties or inconvenience in operation.

[0073] Furthermore, by limiting the extent to which the side netting 2 of the trolley is extended, excessive expansion of the trolley's internal space is avoided, which helps users efficiently store and retrieve goods within a limited space and improves the practicality of the equipment.

[0074] Furthermore, this design eliminates the need for another opening on the trolley base connector 3 to allow the trolley side net connector 4 to rotate in the other direction. This ensures the structural strength of the trolley base connector 3 and limits the rotation angle of the trolley side net connector 4 in the other direction, thus limiting the degree of rotation and opening of the trolley side net 2 on the trolley base 1. This prevents the internal space of the trolley 100 from expanding too much, which could lead to operational difficulties or inconveniences, and makes it easier for users to operate.

[0075] In some other embodiments, the trolley base connector 3 has a third opening, which is corresponding to the second opening 33. The trolley side net connector 4 can rotate in the opposite direction on the trolley base connector 3 through the third opening. A suitable design can be selected according to actual needs.

[0076] like Figures 1 to 17 As shown, in this embodiment, a limiting component 6 is also provided between the trolley side net connector 4 and the trolley base connector 3. The limiting component 6 can limit the relative position between the trolley side net connector 4 and the trolley base connector 3, so that the trolley side net 2 is kept perpendicular or nearly perpendicular to the trolley base 1, thereby keeping the trolley 100 in the unfolded state. With this design, it can be ensured that when the trolley 100 is in the unfolded state, the trolley side net connector 4 is locked on the trolley base connector 3 by the limiting component 6, avoiding the trolley side net connector 4 from rotating on the trolley base connector 3 due to external force, vibration or improper human operation, thereby limiting the movement of the trolley side net 2, effectively preventing the goods from falling off due to the tilting or opening of the trolley side net 2 during transportation, and improving safety.

[0077] Furthermore, the stable structure eliminates the need for users to frequently adjust the angle of the trolley's side netting, allowing them to focus more on material handling and improving overall work efficiency.

[0078] like Figures 1 to 17 As shown, the limiting component 6 in this embodiment includes a limiting block 61 and a limiting groove 62. When the limiting block 61 is inserted into the limiting groove 62, the trolley side net connector 4 is limited on the trolley base connector 3.

[0079] Specifically, the cooperation between the limiting block 61 and the limiting groove 62 forms a mechanical locking mechanism. When the limiting block 61 is inserted into the limiting groove 62, the trolley side net connector 4 can be locked onto the trolley base connector 3 to prevent it from moving due to external force or improper operation.

[0080] With this design, the limiting block 61 can effectively limit the relative displacement of the trolley side net connector 4, ensuring that the trolley side net 2 always remains perpendicular or nearly perpendicular to the trolley base 1 during use, thus avoiding safety hazards caused by position changes.

[0081] The design of the limiting component 6 provides better stability for the entire trolley structure, preventing the trolley side net 2 from swaying or tilting during transportation, thereby improving the overall safety of use.

[0082] Furthermore, the design of the limiting block 61 and the limiting groove 62 makes the locking and unlocking process simple and intuitive, allowing users to complete the operation quickly and improving the user experience.

[0083] Furthermore, the limit component 6 has a simple structure, making it easy for users to maintain and inspect, and reducing the probability of potential failures.

[0084] Preferably, in this embodiment, the limiting groove 62 is located at the top of the trolley base connector 3, that is, below the first opening 32, and the limiting block 61 is located at the top of the trolley side net connector 4, so that when locked, the limiting block 61 can be naturally inserted into and locked into the limiting groove 62. This layout design can make maximum use of gravity and self-weight effect to ensure that the limiting block 61 can stably enter the limiting groove 62 and achieve locking.

[0085] Preferably, the relative position design of the limiting block 61 and the limiting groove 62 ensures that when the trolley side net connector 4 is subjected to downward pressure, the limiting block 61 can smoothly enter the limiting groove 62, thereby effectively locking the trolley side net connector 4. This design reduces the complexity of operation and improves the reliability of locking.

[0086] Furthermore, this structural design effectively prevents the side net connector 4 from shifting unexpectedly during use, ensuring that it always remains in the correct working condition and reducing the risk of goods falling off.

[0087] Specifically, when using the trolley, the user only needs to press down the side net connector 4 of the trolley to automatically lock it in the limit groove 62. The operation is simple, intuitive and easy to understand.

[0088] Furthermore, the limiting groove 62 is set on the top of the trolley base connector 3, which makes the overall design more reasonable in terms of space utilization and helps to improve the overall design aesthetics and functionality of the trolley.

[0089] Preferably, the surfaces of the limiting block 61 and the limiting groove 62 have a certain curvature. The curvature design helps the limiting block 61 to be more easily aligned and inserted into the limiting groove 62. When the user applies downward pressure to the trolley side net connector 4, the curved surface can guide the limiting block 61 to smoothly enter the limiting groove 62, reducing friction and resistance during the alignment process and reducing jamming caused by incorrect positioning.

[0090] Compared to a flat design, the curved surface can disperse pressure during contact, reduce wear at the contact point, and extend the service life of the limit block 61 and the limit groove 62. This design can effectively reduce maintenance frequency and replacement costs.

[0091] Furthermore, the curved interface can better disperse and withstand impact forces when subjected to force, increasing the stability of the lock. When the load changes or external force is applied, the curved design helps to maintain the locked state of the limit block 61 and reduce the risk of accidental loosening.

[0092] Preferably, the curved design not only has functional advantages, but also enhances the overall aesthetics, bringing users a better visual experience.

[0093] Preferably, there are two limiting blocks 61, which are respectively disposed on both sides of the trolley side net connector 4. The limiting grooves 62 are correspondingly disposed with the limiting blocks 61 and are respectively disposed on both sides of the receiving groove 31. The design of the two limiting blocks 61 can effectively distribute the pressure applied to the trolley side net connector 4, so that the trolley side net connector 4 is more stable in the locked state. Whether subjected to longitudinal or lateral forces, the cooperation of the two limiting blocks can provide more uniform support, and make the trolley side net connector 4 more securely locked on the trolley base connector 3, reducing the risk of accidental loosening during transportation, thereby improving overall safety.

[0094] Preferably, in other embodiments, the limiting component may also adopt a structure such as a locking pin component or an adjusting nut component, and a suitable design can be selected according to actual needs.

[0095] like Figures 1 to 17 As shown, the trolley 100 in this embodiment also includes a mesh gate 101 and a column rotation structure. The column rotation structure includes at least one column rotation component 7. Each column rotation component 7 includes a mesh gate connecting assembly 71 connected to the mesh gate 101, a side net connecting assembly 72 connected to the trolley side net 2, and a multi-functional connecting assembly 73 connected to the mesh gate connecting assembly 71 and the side net connecting assembly 72 respectively. The multi-functional connecting assembly 73 is provided with a rotating member 74 that enables the mesh gate connecting assembly 71 and the side net connecting assembly 72 to rotate relative to each other.

[0096] Preferably, the mesh door corresponds one-to-one with the side mesh 2 of the trolley. When storing, the mesh door 101 can be rotated to a state parallel or nearly parallel to the side mesh 2 of the trolley by the rotating component 74. As the side mesh 2 of the trolley rotates to a state parallel or nearly parallel to the trolley base 1, the convenience of folding and storing the trolley is further improved.

[0097] Preferably, the trolley also includes a back net, which is rotatably connected to the trolley base 1. The back net is rotated to a state parallel or nearly parallel to the trolley base 1 to further improve the trolley's folding and storage convenience.

[0098] In other embodiments, there is only one mesh door, which is rotatably connected to one of the trolley side meshes 2. When the trolley is to be stored, the mesh door rotates to a state parallel to the corresponding trolley side mesh 2 to achieve folding and storage of the trolley.

[0099] In other embodiments, the back net can also be rotated and folded for storage, further reducing the folded volume of the back net, thereby reducing the folded volume of the trolley.

[0100] Preferably, the multifunctional connecting component 73 of this embodiment is further provided with a movable component 75 that enables the mesh gate connecting component 71 and the side mesh connecting component 72 to move vertically relative to each other; the movable component 75 includes a first sliding part 751 and a second sliding part 752 slidably connected thereto, the first sliding part 751 is provided on the multifunctional connecting component 73, and the second sliding part 752 is provided on the mesh gate connecting component 71 or the side mesh connecting component 72.

[0101] By adding a movable component 75, the mesh door 101 can also be finely adjusted in position on the corresponding trolley side mesh 2, further improving the convenience of folding and storing the trolley.

[0102] Preferably, the trolley 100 further includes a locking structure, which is disposed between the trolley base 1 and the mesh door 101. The mesh door 101 is connected to the mesh door connecting assembly 71, and the trolley side mesh 2 is connected to the side mesh connecting assembly 72. The mesh door connecting assembly 71 can be moved upward relative to the side mesh connecting assembly 72 by the moving member 75, so that the mesh door 101 on the trolley side mesh 2 can be switched to an unlocked state. The mesh door connecting assembly 71 can be rotated relative to the side mesh connecting assembly 72 by the rotating member 74, so as to drive the mesh door 101 in the unlocked state to rotate on the trolley side mesh 2.

[0103] When unlocking is required, the operator can first lift the mesh door 101 upwards. At this time, the mesh door connecting component 71 can move upwards relative to the side mesh connecting component 72 via the moving component 75, unlocking the locking structure so that the mesh door 101 is switched to the unlocked state on the trolley side mesh 2. At this time, the operator can rotate the mesh door 101, and the mesh door connecting component 71 can rotate relative to the side mesh connecting component 72 via the rotating component 74, so as to drive the mesh door 101 in the unlocked state to rotate on the trolley side mesh 2, so that the mesh door 101 is opened on the trolley 100.

[0104] When locking is required, the operator can rotate the mesh door 101 to the designated position, and the mesh door connecting component 71 can be moved downward relative to the side mesh connecting component 72 by the moving component 75, so that the locking structure can be locked, so that the mesh door 101 is switched to the locked state on the trolley side mesh 2.

[0105] Preferably, the locking structure includes a lock hole and a lock pin. When the mesh door connecting assembly 71 moves upward relative to the side mesh connecting assembly 72 via the moving member 75, the lock pin disengages from the lock hole, the locking structure is released from the locked state, and then the mesh door 101 is rotated at a certain angle so that the lock pin and the lock hole are not aligned, the mesh door 101 can be lowered, and the mesh door connecting assembly 71 moves downward relative to the side mesh connecting assembly 72 via the moving member 75.

[0106] Once the operator can rotate the mesh door 101 to a certain position, lift the mesh door 101 again and continue rotating it to the designated position, i.e., after the locking pin and the lock hole are aligned, the mesh door 101 can be lowered. The mesh door connecting component 71 moves downward relative to the side mesh connecting component 72 through the moving component 75. At this time, the locking pin is engaged in the lock hole to lock the mesh door 101. It has the advantages of simple structure and convenient operation. Moreover, by adopting the above-mentioned column rotation structure, the structure of the trolley is more compact and the design of the trolley is more concise, which is conducive to reducing the size of the trolley.

[0107] Specifically, by integrating the rotating component 74 and the moving component 75 onto the multi-functional connecting assembly 73, the column rotating component 7 can simultaneously enable the relative rotation of the mesh gate connecting assembly 71 and the side mesh connecting assembly 72, as well as the relative vertical displacement of the mesh gate connecting assembly 71 and the side mesh connecting assembly 72. This concentrates both the rotation mechanism and the vertical movement mechanism on the column rotating component 7, allowing for relative rotation and vertical displacement of the mesh gate connecting assembly 71 and the side mesh connecting assembly 72 within the same structure. This makes the operation smoother and enables multiple functions to be implemented within the same structure, effectively reducing the complexity of the design and the number of parts. This results in a more compact and simpler overall structure for the trolley, reducing potential failure points.

[0108] Specifically, the movable component 75 allows the mesh gate connecting component 71 and the side mesh connecting component 72 to move vertically, ensuring that the mesh gate can be accurately positioned in different states (such as when locked and unlocked), thereby improving safety and stability.

[0109] Specifically, the rotating member 74 allows relative rotation between the mesh gate connecting assembly 71 and the side mesh connecting assembly 72, which facilitates the opening or closing of the mesh gate to adapt to different operational needs.

[0110] Furthermore, the integrated design reduces the space occupied, making the trolley more compact and helping to improve operational efficiency in limited spaces, adapting to various usage environments. The integrated rotation and movement mechanism can better control the opening and closing of the mesh door, ensuring stability during operation and reducing the risk of accidents.

[0111] Furthermore, by enabling multiple functions through a single component, operators can more easily make adjustments and controls, improving work flexibility and meeting diverse operational needs.

[0112] Furthermore, the integrated design of the rotating column structure not only simplifies the production and assembly process but also reduces subsequent maintenance costs by reducing the number of parts that need to be inspected and replaced individually.

[0113] Preferably, the movable component 75 is located between the multifunctional connecting component 73 and the side mesh connecting component 72, or the movable component 75 is located between the multifunctional connecting component 73 and the mesh gate connecting component 71. A suitable design can be selected according to actual needs.

[0114] Preferably, since the movable component 75 in this embodiment includes a first sliding part 751 and a second sliding part 752 slidably connected thereto, the two components can move relative to each other through this sliding connection, thereby realizing the function of vertical displacement. This sliding design allows the relative vertical displacement of the mesh door connecting component 71 and the side mesh connecting component 72 to be realized through the sliding mechanism during operation, thereby ensuring that the mesh door 101 can be accurately positioned when opening and closing.

[0115] Preferably, the design of the sliding mechanism's moving component 75 reduces friction, providing a smoother movement experience and eliminating any jamming or unevenness during operation, thus improving the user experience. Furthermore, the design of the moving component 75 effectively distributes the force applied to the mesh gate 101, reducing stress concentration in the structure, improving overall stability, and lowering the risk of unexpected malfunctions. In addition, the structure of the sliding mechanism's moving component 75 is generally relatively simple, facilitating maintenance and replacement. Especially when worn, the moving component 75 can be more easily inspected or replaced, reducing maintenance difficulty.

[0116] Furthermore, through the sliding mechanism of the moving component 75, operators can easily adjust the height of the gate to adapt to different working environments and needs, thus improving overall flexibility.

[0117] Furthermore, the sliding mechanism's moving component 75 occupies less assembly space, helping to maintain the compactness of the overall trolley structure, making it suitable for use in situations with limited space.

[0118] like Figures 1 to 17 As shown, the first sliding part 751 of this embodiment includes a sliding connecting sleeve disposed on the multifunctional connecting assembly 73. The sliding connecting sleeve is provided with a sliding hole 753. The second sliding part 752 includes a sliding segment 754 corresponding to the sliding hole 753. The sliding connecting sleeve is sleeved on the outside of the sliding segment 754 through the sliding hole 753, and the sliding connecting sleeve can slide up and down along the sliding segment 754, thereby realizing the relative up and down movement between the mesh gate connecting assembly 71 and the side mesh connecting assembly 72.

[0119] When force is applied, the sliding connecting sleeve can move up and down along the sliding section 754, thereby driving the mesh gate connecting component 71 or the side mesh connecting component 72 to move up and down through the multi-functional connecting component 73. The precise cooperation between the sliding connecting sleeve and the sliding section 754 can ensure the stability and accuracy of the up and down movement, reduce the shaking caused by gaps, and make the up and down movement of the mesh gate 101 relative to the trolley side mesh 2 more precise.

[0120] Furthermore, the sliding connection design allows operators to more easily control the up and down movement of the mesh gate 101, reducing complex operating steps and improving work efficiency.

[0121] Furthermore, when the sliding connecting sleeve moves on the sliding section 754, the friction is relatively small, which can effectively reduce the wear of components, extend service life, and reduce maintenance costs.

[0122] Furthermore, the sliding connecting sleeve design can effectively distribute the pressure applied to the multi-functional connecting component 73, making the overall structure more stable, reducing the risk of accidents during operation, and improving safety.

[0123] Furthermore, the design of the sliding connecting sleeve and the sliding section 754 can occupy less assembly space, which helps to make the overall structure of the column rotating component 7 more compact, and helps to reduce the number of parts of the trolley and reduce its size.

[0124] Furthermore, the sliding connection has a relatively simple structure, making it easy to maintain and replace when needed, reducing the workload of operators. Moreover, due to the reduction in the number and complexity of parts, the production and maintenance costs are relatively low, thus improving economic efficiency.

[0125] Preferably, in other embodiments, the first sliding part 751 and the second sliding part 752 may adopt a structure such as a slide rail, roller or slider. Taking the slide rail structure as an example, the first sliding part 751 and the second sliding part 752 are slide rails that are slidably connected, and a suitable design can be selected according to actual needs.

[0126] like Figures 1 to 17 As shown, the second sliding part 752 in this embodiment also includes two first limiting protrusions 755 located at the upper and lower ends of the sliding segment 754, respectively. Each first limiting protrusion 755 can abut against the sliding connecting sleeve to limit the highest and lowest sliding distance of the sliding connecting sleeve on the sliding segment 754. By setting the first limiting protrusions, the sliding distance of the sliding connecting sleeve on the sliding segment 754 is precisely limited, ensuring controllability and stability during the movement process.

[0127] Specifically, the design of the first limiting protrusion effectively prevents the sliding connecting sleeve from moving too far up or down along the sliding section 754, avoiding equipment damage caused by excessive sliding, extending the service life of the components, and by limiting the sliding distance, reducing safety hazards caused by misoperation, and ensuring the safety of operators during use.

[0128] Furthermore, through clear movement restrictions, operators can more clearly understand the working range of the equipment. For example, when the sliding connecting sleeve abuts against the first limiting protrusion at the upper end of the sliding section 754, the operator can clearly know that the mesh door 101 has reached the position of disengaging from the locking structure on the trolley. This means that the mesh door connecting component 71 can rotate relative to the side mesh connecting component 72, thereby realizing the opening or closing of the mesh door 101. This design, through a clear feedback mechanism, ensures that the operator can grasp the position of the equipment in a timely manner during operation, reducing the risk of misoperation.

[0129] When the sliding connecting sleeve abuts against the first limiting protrusion at the lower end of the sliding section 754, it also prompts the operator that the mesh door 101 has reached the position where it is locked with the locking structure on the trolley, or that the mesh door 101 has reached the designated position and remains in that position without moving down. This mechanism ensures that the mesh door can remain in a stable position when it is open and will not move down unexpectedly due to gravity or other factors, ensuring safety and stability. It also makes it easier for the mesh door 101 to maintain normal operation when the trolley is open, improving the operator's overall confidence and comfort.

[0130] Furthermore, this limiting mechanism allows operators to more easily check and adjust the range of motion during debugging and maintenance without worrying about the sliding parts exceeding the design range, ensuring the long-term stable operation of the equipment. The design of the first limiting protrusion helps reduce maintenance and replacement costs and improve economic efficiency during the long-term use of the mesh gate 101.

[0131] like Figures 1 to 17 As shown, the shape of the sliding hole 753 in this embodiment is the same as or similar to the outer contour shape of the sliding segment 754. Preferably, the shape of the sliding hole 753 in this embodiment is a polygon, a circle or an ellipse, etc., and the outer contour shape of the sliding segment 754 is a polygon, a circle or an ellipse, etc.

[0132] Preferably, circular and elliptical sliding holes can effectively reduce friction during sliding, thereby improving the smoothness and flexibility of sliding and helping to extend the service life of the equipment.

[0133] The polygonal design provides better force transmission, and the outer contour shape of the polygonal sliding hole 753 and sliding section 754 allows the sliding connecting sleeve to slide more accurately up and down along the sliding section 754, effectively improving the stability of the moving component 75 during operation and reducing vibration or offset caused by asymmetry or imbalance.

[0134] Preferably, the choice of multiple shapes can make the installation process of the movable component 75 simpler, facilitate matching and docking with other connecting components, and improve the overall assembly efficiency.

[0135] Furthermore, the diverse shape options not only meet functional requirements but also enhance the appearance design of the equipment, making it more aesthetically pleasing and in line with the aesthetic standards of modern industrial design.

[0136] Specifically, the rotating component 74 in this embodiment includes the sliding hole 753 and the sliding section 754. The sliding hole 753 is circular in shape, and the outer contour of the sliding section 754 is circular, so that the sliding connecting sleeve can rotate relative to the sliding section 754 through the sliding hole 753. By using the circular sliding hole 753 and the matching outer contour shape of the sliding section 754, the sliding connecting sleeve can rotate freely and slide up and down within the sliding section 754.

[0137] With this circular structure design, the sliding connecting sleeve can not only move up and down on the sliding section 754 (moving along the axis of the sliding section 754 through the sliding hole 753), but also rotate relative to the sliding section 754 (rotating around the central axis of the sliding section 754). This design increases the degree of freedom of movement, making the equipment more flexible in operation.

[0138] Furthermore, this design allows the sliding connecting sleeve to move in multiple directions on the sliding section 754, so that both the moving member 75 and the rotating member 74 are integrated between the sliding connecting sleeve and the sliding section 754, further increasing the functionality of the first sliding part 751 and the second sliding part 752.

[0139] Preferably, the circular design of the sliding hole 753 and the sliding section 754 provides a uniform contact surface, which can reduce friction and wear during the sliding and rotation processes, reduce the risk of wear, and thus extend the service life of the equipment. In addition, this design makes the movement of the sliding connecting sleeve smoother and more stable, reducing energy loss.

[0140] Furthermore, the circular design of the sliding hole 753 and sliding section 754 can evenly distribute the load in all directions, reduce local stress concentration, reduce the risk of damage caused by uneven load, and ensure stable operation of the equipment.

[0141] like Figures 1 to 17As shown, the rotating component 74 in this embodiment includes a first rotating part 741 and a second rotating part 742 rotatably connected thereto. The first rotating part 741 is disposed on the multifunctional connecting assembly 73, and the second rotating part 742 is disposed on the mesh door connecting assembly 71 or the side mesh connecting assembly 72. Under the cooperative action of the first rotating part 741 and the second rotating part 742, the mesh door connecting assembly 71 or the side mesh connecting assembly 72 can rotate on the multifunctional connecting assembly 73, so that the mesh door connecting assembly 71 and the side mesh connecting assembly 72 can rotate relative to each other.

[0142] like Figures 1 to 17 As shown, the first rotating part 741 of this embodiment includes a rotating connecting sleeve disposed on the multifunctional connecting assembly 73, and a rotating hole 743 is provided in the rotating connecting sleeve. The second rotating part 742 includes a rotating segment 744 corresponding to the rotating hole 743. The rotating connecting sleeve is rotatably fitted on the outside of the rotating segment 744 through the rotating hole 743.

[0143] Specifically, a rotating connecting sleeve is disposed on the multifunctional connecting assembly 73, and has a built-in rotating hole 743. A rotating segment 744 corresponds to the rotating hole 743. The rotating hole 743 allows the rotating connecting sleeve to rotate around the rotating segment 744. When the rotating connecting sleeve rotates, the rotating segment 744 can maintain a stable position.

[0144] Preferably, the rotating connecting sleeve simplifies the connection between the two by using the rotating hole and the rotating section, reducing the complexity of the mechanical structure and making the overall design simpler.

[0145] Furthermore, the design of the rotating connecting sleeve and rotating section 744 can effectively reduce friction, improve the smoothness of rotation, reduce energy loss, and thus improve the overall motion efficiency.

[0146] Furthermore, the rotating connecting sleeve is fitted onto the outside of the rotating section 744, and the two have good stability, ensuring that no excessive offset or vibration will occur during rotation.

[0147] Furthermore, the rotating connecting sleeve and rotating section have the advantages of simple structure, easy maintenance and adjustment, and can be inspected and maintained without disassembling the entire trolley.

[0148] like Figures 1 to 17 As shown, the second rotating part 742 in this embodiment also includes two second limiting protrusions 745 located at the upper and lower ends of the rotating segment 744, respectively. Each second limiting protrusion 745 is close to or abuts against the rotating connecting sleeve to limit the rotating connecting sleeve on the rotating segment 744.

[0149] Specifically, the second limiting protrusion 745 can effectively restrict the up and down movement of the rotating connecting sleeve, keeping it in a stable position on the rotating section 744. By the proximity or abutment between the second limiting protrusion 745 and the rotating connecting sleeve, the rotating connecting sleeve is ensured to always be in the predetermined rotation trajectory during rotation. The limiting design can ensure that the rotating connecting sleeve rotates within a predetermined angle, making the motion trajectory more standardized and predictable, and improving the overall motion performance.

[0150] When the rotating connecting sleeve rotates on the rotating section 744, the second limiting protrusion 745 provides the necessary boundary to prevent the rotating connecting sleeve from being accidentally displaced due to external force or inertia, thereby enhancing the stability of the structure. By limiting the range of motion of the rotating connecting sleeve, the risk of accidental detachment or loss of control is reduced, and the safety of the overall system is improved.

[0151] Furthermore, since the rotating connecting sleeve will not easily shift or detach, its maintenance and repair process can be simplified, eliminating the need for frequent adjustments to the component's position and reducing maintenance costs.

[0152] like Figures 1 to 17 As shown, in this embodiment, there are multiple column rotating components 7. The multiple column rotating components 7 are distributed at intervals along the height direction of the trolley side net 2, and a linkage component 8 is provided between adjacent column rotating components 7. The two ends of each linkage component 8 are respectively connected to the corresponding multi-functional connecting component 73. The multiple linkage components 8 can drive multiple moving components 75 to move up and down synchronously; or, the multiple linkage components 8 can drive multiple moving components 75 to move up and down synchronously, and drive multiple rotating components 74 to rotate synchronously.

[0153] Specifically, in this embodiment, multiple column rotating components 7 are distributed at intervals along the height direction of the trolley side net 2. This design can provide support and power over a wider range and enhance the stability of the overall system.

[0154] Adjacent rotating column components 7 are connected by linkage components 8, so that the movement of one rotating column component 7 can be transmitted to other rotating column components 7. Both ends of each linkage component 8 are connected to the multi-functional connection component 73, realizing the transmission of movement. Using the linkage component 8, the movement signal is transmitted from one rotating column component to other components, so that multiple moving components 75 can move up and down synchronously, and can also drive multiple rotating components 74 to rotate synchronously.

[0155] Through the linkage mechanism, multiple rotating column components 7, moving components 75 and rotating components 74 can achieve coordinated movement, improving the operating efficiency and smoothness of the entire system.

[0156] Furthermore, the distribution of multiple rotating column components 7 provides better support, effectively distributing the load, reducing the risk of failure due to overload of a certain component, and enhancing the stability of the entire structure.

[0157] Furthermore, through the synchronous movement of multiple column rotating components, operators can easily control the up-and-down movement and / or rotation of the mesh gate 101 relative to the trolley side mesh 2, simplifying the operation and improving ease of use.

[0158] Preferably, the linkage component 8 includes a linkage rod, and the two ends of the linkage rod are respectively connected to the corresponding multi-functional connection component 73.

[0159] Preferably, the multifunctional connecting component 73 in this embodiment includes a connecting seat, one side of which is connected to a rotating connecting sleeve and the other side is connected to a sliding connecting sleeve.

[0160] Preferably, the connecting seat, rotating connecting sleeve, and sliding connecting sleeve are integrally molded, which has the advantage of high structural strength. In other embodiments, the connecting seat, rotating connecting sleeve, and sliding connecting sleeve are detachable connection structures, and a suitable design can be selected according to actual needs.

[0161] Preferably, in this embodiment, the side net connecting assembly 72 includes a side net connecting sleeve fixed to the upright of the trolley side net 2. The sliding section 754 and two first limiting protrusions 755 are provided on the outer side wall of the side net connecting sleeve. The sliding connecting sleeve is sleeved on the outside of the sliding section 754 through the sliding hole 753, that is, sleeved on the outer side wall of the side net connecting sleeve. By adopting a circular sliding hole 753 and a matching outer contour shape of the sliding section 754, the sliding connecting sleeve can rotate freely and slide up and down on the side net connecting sleeve.

[0162] The mesh gate connecting assembly 71 includes a mesh gate connecting sleeve fixed to the upright of the mesh gate 101. The rotating section 744 and two second limiting protrusions 745 are provided on the outer wall of the mesh gate connecting sleeve, so that the rotating connecting sleeve is fitted on the outside of the rotating section 744. That is, the rotating connecting sleeve is fitted on the outside of the mesh gate connecting sleeve, allowing the rotating connecting sleeve to rotate freely on the mesh gate connecting sleeve. With the above design, the mesh gate 101 can rotate relative to the trolley side mesh 2 through the cooperation of the mesh gate connecting sleeve and the rotating connecting sleeve, and the mesh gate 101 can also The sliding connecting sleeve and the side net connecting sleeve cooperate, and the sliding connecting sleeve drives the net door 101 through the connecting seat and the rotating connecting sleeve, so that it can move up and down relative to the trolley side net 2. Furthermore, the sliding connecting sleeve in this embodiment can also rotate freely relative to the side net connecting sleeve, that is, it can also drive the net door 101 to rotate further relative to the trolley side net through the connecting seat and the rotating connecting sleeve. Through the dual rotation mechanism, the rotation angle of the net door 101 relative to the trolley side net can be further expanded, so as to facilitate the operator to open the net door 101.

[0163] In other embodiments, the rotating component 74 includes only the sliding hole 753 and the sliding section 754. By adopting a circular sliding hole 753 and a matching outer contour shape of the sliding section 754, the sliding connecting sleeve can rotate freely and slide up and down on the side net connecting sleeve. The net door connecting sleeve is fixedly connected to the multi-functional connecting component 73 (i.e., the connecting seat). Through the cooperation of the sliding connecting sleeve and the sliding section 754, the multi-functional connecting component 73 is driven to rotate and move up and down relative to the trolley side net 2, so as to realize the rotation and up and down movement of the net door 101 relative to the trolley side net 2. A suitable design can be selected according to actual needs.

[0164] In some other embodiments, the rotating member 74 includes only a first rotating part 741 and a second rotating part 742 rotatably connected thereto. The sliding connecting sleeve can only move up and down along the sliding section 754 and cannot rotate (e.g., the sliding hole 753 is an irregular hole, such as a polygonal or elliptical sliding hole 753). This allows the rotating member 74 to rotate the mesh door 101 relative to the trolley side mesh 2, and the moving member 75 to move the mesh door 101 up and down relative to it. A suitable design can be selected according to actual needs.

[0165] In other embodiments, the side net connection assembly 72 includes a side net connection sleeve fixed to the column of the trolley side net 2, the rotating member 74 is disposed between the multi-functional connection assembly 73 and the side net connection sleeve, the net gate connection assembly 71 includes a net gate connection sleeve fixed to the column of the net gate 101, and the moving member 75 is disposed between the multi-functional connection assembly 73 and the net gate connection sleeve. The appropriate design can be selected according to actual needs.

Claims

1. A foldable storage trolley having an unfolded state and a folded storage state, characterized in that: It includes trolley side net (2), trolley base (1) and rotating connection structure, the number of trolley side net (2) is two, and is respectively located at the two sides of trolley base (1), at least one rotating connection structure is arranged between each trolley side net (2) and trolley base (1), each rotating connection structure can drive corresponding trolley side net (2) to rotate on trolley base (1), so that the trolley (100) is converted to folding storage state; The rotating connection structure includes trolley base connecting piece (3) connected with trolley base (1) and trolley side net connecting piece (4) connected with trolley side net (2), rotating assembly (5) capable of rotatingly connecting trolley side net connecting piece (4) and trolley base connecting piece (3) is arranged between trolley side net connecting piece (4) and trolley base connecting piece (3), trolley side net connecting piece (4) can rotate on trolley base connecting piece (3) through rotating assembly (5), and trolley side net connecting piece (4) can drive trolley side net (2) to rotate towards trolley base (1).

2. The foldable storage dolly of claim 1, wherein: The trolley base connecting piece (3) is provided with a containing groove (31) in the trolley base connecting piece (3), the trolley side net connecting piece (4) is located in the containing groove (31), the top of the trolley base connecting piece (3) is provided with a first opening (32) communicating with the containing groove (31), the first opening (32) can extend the top of the trolley side net connecting piece (4); the side wall of the trolley base connecting piece (3) is provided with a second opening (33) communicating with the containing groove (31), the second opening (33) can rotate into and out of the containing groove (31).

3. The foldable storage dolly of claim 2, wherein: The containing groove (31) includes a containing section (311) and at least one rotating section (312), at least one rotating section (312) is located on one side of the containing section (311), the trolley side net connecting piece (4) is located in the containing section (311), and the rotating assembly (5) is located in the rotating section (312).

4. The foldable storage dolly of claim 3, wherein: The length direction of the rotating section (312) is arranged along the length direction of the trolley base connecting piece (3), and the rotating assembly (5) can slide up and down along the length direction of the rotating section (312), so that the trolley side net connecting piece (4) can slide up and down in the containing section (311).

5. The foldable storage dolly of claim 3, wherein: One end of the rotating section (312) communicates with the first opening (32), and the rotating assembly (5) can be taken out of the trolley base connecting piece (3) through the first opening (32), so that the trolley side net connecting piece (4) is taken out of the trolley base connecting piece (3) through the first opening (32).

6. The foldable storage dolly of claim 4, wherein: The rotating section (312) includes a moving area (313) and a taking-out area (314) connected in sequence from bottom to top, the taking-out area (314) communicates with the first opening (32), the width size of the taking-out area (314) is less than the width size of the moving area (313), the rotating assembly (5) is provided with a taking-out guide plane (51), when the rotating assembly (5) rotates to the taking-out guide plane (51) and the moving area (313) When the side wall of the trolley is parallel or nearly parallel to the side wall of the trolley, the rotating assembly (5) can move into the disengaging area (314) and disengage from the first opening (32).

7. The foldable storage dolly of claim 1, wherein: The trolley further comprises a limiting assembly (6) between the trolley side net connecting member (4) and the trolley base connecting member (3), which can limit the relative position between the trolley side net connecting member (4) and the trolley base connecting member (3) so as to maintain the trolley side net (2) in a vertical or nearly vertical state with the trolley base (1).

8. The foldable storage dolly of claim 1, wherein: The trolley (100) further comprises a net door (101) and a column rotating structure, which comprises at least one column rotating component (7), each of which comprises a net door connecting assembly (71) connected with the net door (101), a side net connecting assembly (72) connected with the trolley side net (2), and a multifunctional connecting assembly (73) connected with the net door connecting assembly (71) and the side net connecting assembly (72) respectively, and the multifunctional connecting assembly (73) is provided with a rotating member (74) capable of relatively rotating the net door connecting assembly (71) and the side net connecting assembly (72).

9. The foldable storage dolly of claim 8, wherein: The multifunctional connecting assembly (73) is further provided with a moving member (75) capable of relatively moving the net door connecting assembly (71) and the side net connecting assembly (72) up and down; the moving member (75) comprises a first sliding part (751) and a second sliding part (752) in sliding connection with the first sliding part (751), the first sliding part (751) is arranged on the multifunctional connecting assembly (73), and the second sliding part (752) is arranged on the net door connecting assembly (71) or the side net connecting assembly (72).

Images