Rotary connecting structure applied to trolley and trolley

Abstract

The utility model relates to the technical field of machinery, in particular to a rotary connecting structure applied to a trolley and the trolley, and the rotary connecting structure comprises a trolley base connecting piece connected with a trolley base and a trolley side net connecting piece connected with a trolley side net. A rotating assembly capable of enabling the trolley side net connecting piece and the trolley base connecting piece to be rotationally connected is arranged between the trolley side net connecting piece and the trolley base connecting piece, the trolley side net connecting piece can rotate on the trolley base connecting piece through the rotating assembly, and the trolley side net connecting piece can drive the trolley side net to rotate in the direction close to the trolley base. Therefore, the trolley side net can be rotated to the position close to the trolley base when needed, the trolley is folded, and a more compact storage form is formed. According to the foldable trolley, the trolley is allowed to be folded when not used, so that the space required by storage is greatly reduced, the trolley is more efficient in the transportation and storage process, and the foldable trolley can be used in multiple occasions and can flexibly meet different logistics requirements.

Description

Technical Field

[0001] The utility model relates to the technical field of machinery, and in particular to a rotary connection structure applied to a trolley and the trolley. Background Art

[0002] With the continuous development of industrial automation and logistics transportation, trolleys, as an important means of transportation, are widely used in various fields such as warehousing, distribution, and production lines. Traditional trolley designs usually include a base and side nets surrounding the base to form an enclosed transportation space. However, existing trolleys use a fixed connection structure between the base and the side nets. Although this design ensures structural stability to a certain extent, it also has the disadvantage of being unable to fold and store the trolley, limiting its portability and storage efficiency.

[0003] The connection structure of existing trolleys is usually fixed by welding or bolts, so that the trolley has good load-bearing capacity and stability when in use. However, when the trolley needs to be stored or transported, the fixed connection structure makes the trolley unable to be folded, thereby taking up a large storage space. In addition, in some occasions, the user may need to adjust the structure of the trolley according to different work requirements. This fixed connection method also reduces the flexibility and adaptability of the trolley.

[0004] The present invention is proposed in view of the deficiencies in the prior art. Utility Model Content

[0005] In view of the technical problem that the existing trolley mentioned above adopts a fixed connection structure between the base and the side net, the trolley cannot be folded and stored.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] A rotating connection structure applied to a trolley includes a trolley base connecting part connected to the trolley base and a trolley side net connecting part connected to the trolley side net. A rotating assembly is provided between the trolley side net connecting part and the trolley base connecting part, which can enable the two to be rotatably connected. The trolley side net connecting part can rotate on the trolley base connecting part through the rotating assembly, and the trolley side net connecting part can drive the trolley side net to rotate in a direction close to the trolley base, so that the trolley can be folded and stored.

[0008] As described above, a rotating connection structure applied to a trolley is provided with a receiving groove in the trolley base connecting member, and the trolley side net connecting member is located in the receiving groove. The top of the trolley base connecting member is provided with a first opening communicating with the receiving groove, and the first opening can allow the top of the trolley side net connecting member to extend out; the side wall of the trolley base connecting member is provided with a second opening communicating with the receiving groove, and the second opening can allow the trolley side net connecting member to rotate in and out of the receiving groove.

[0009] As described above, a rotating connection structure applied to a trolley, the accommodating slot includes an accommodating section and at least one rotating section, at least one rotating section is located on one side of the accommodating section, the trolley side net connector is located in the accommodating section, and the rotating assembly is located in the rotating section.

[0010] As described above, a rotating connection structure applied to a trolley, the length direction of the rotating section is arranged along the length direction of the trolley base connecting piece, and the rotating assembly can slide up and down along the length direction of the rotating section, so that the trolley side net connecting piece can slide up and down in the accommodating section.

[0011] As described above, a rotating connection structure applied to a trolley, one end of the rotating section is communicated with the first opening, and the rotating assembly can be detached from the trolley base connector through the first opening, so that the trolley side net connector can be detached from the trolley base connector through the first opening.

[0012] As described above, a rotating connection structure applied to a trolley, the rotating section includes a moving area and a disengagement area connected in sequence from bottom to top, the disengagement area is communicated with the first opening, the width dimension of the disengagement area is smaller than the width dimension of the moving area, and the rotating component is provided with a disengagement guide plane. When the rotating component rotates until the disengagement guide plane is parallel or nearly parallel to the side wall of the moving area, the rotating component can move into the disengagement area and disengage from the first opening.

[0013] As described above, a rotating connection structure applied to a trolley is provided with a limiting slot corresponding to the rotating component on the side of the rotating section close to the second opening. When the rotating component is inserted into the limiting slot, the trolley side net connecting piece can rotate in a direction away from the second opening.

[0014] As described above, a rotating connection structure applied to a trolley is further provided with a limit assembly between the trolley side net connector and the trolley base connector. The limit assembly can limit the relative position between the trolley side net connector and the trolley base connector so that the trolley side net maintains a vertical or nearly vertical state with respect to the trolley base.

[0015] As described above, in a rotary connection structure applied to a trolley, the limiting assembly includes a limiting block and a limiting groove. When the limiting block is inserted into the limiting groove, the trolley side net connector is limited on the trolley base connector.

[0016] A trolley having an expanded state and a folded storage state, comprising a trolley side net, a trolley base and a rotating connection structure as described above, wherein the number of the trolley side nets is two, and they are respectively arranged on both sides of the trolley base, and at least one rotating connection structure is provided between each of the trolley side nets and the trolley base, each of the trolley base connecting parts is connected to the trolley base, and each of the trolley side net connecting parts is connected to the corresponding trolley side net, and the trolley side net connecting parts can drive the corresponding trolley side net to rotate on the trolley base to convert the trolley to the expanded state or the folded storage state.

[0017] The beneficial effects of the utility model are:

[0018] The utility model relates to a rotating connection structure for a trolley and a trolley, which relates to the field of mechanical technology, wherein the rotating connection structure includes a trolley base connecting part connected to the trolley base and a trolley side net connecting part connected to the trolley side net, a rotating assembly is provided between the trolley side net connecting part and the trolley base connecting part, which can enable the two to be rotatably connected, the trolley side net connecting part can be rotated on the trolley base connecting part through the rotating assembly, and the trolley side net connecting part can drive the trolley side net to rotate in the direction close to the trolley base, so that the trolley side net can be rotated to a position close to the trolley base when needed, so that the trolley can be folded to form a more compact storage shape; the trolley is allowed to fold when not in use, thereby greatly reducing the space required for storage, making the trolley more efficient during transportation and storage, and the folding trolley can be used in multiple occasions, such as in warehouses, factories, distribution centers, etc., and can flexibly respond to different logistics needs.

[0019] The present invention will be further described below with reference to the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram and a partially enlarged schematic diagram of the trolley of the present invention;

[0021] Figure 2 This is an exploded schematic diagram of the rotary connection structure of the present invention;

[0022] Figure 3 It is a top view schematic diagram of the rotary connection structure of the utility model;

[0023] Figure 4 for Figure 3 Schematic cross-sectional view along line AA (the rotating connection structure is in the folded and stored state);

[0024] Figure 5 for Figure 3 Schematic cross-sectional view along line AA (the rotating connection structure is in the expanded state);

[0025] Figure 6 for Figure 3 Schematic cross-sectional view along line AA and partial enlarged schematic view (the trolley side net connector rotates to a specified angle on the trolley base connector to achieve a disengaged state);

[0026] Figure 7 for Figure 3 Schematic cross-sectional view along line BB (the rotary connection structure is in the folded and stored state);

[0027] Figure 8 This is a structural diagram of the rotary connection structure of the utility model (the state of the latch and the bayonet being engaged);

[0028] Figure 9 This is a top view of the rotary connection structure of the present invention (when the latch and the bayonet are engaged);

[0029] Figure 10 for Figure 9 Schematic cross-sectional view along line CC;

[0030] Figure 11 This is a schematic diagram of the structure of the trolley of the present invention (with hidden mesh door and back mesh);

[0031] Figure 12 This is an exploded schematic diagram of the trolley of the present invention (with the mesh door and back mesh hidden). DETAILED DESCRIPTION

[0032] The following describes the embodiments of the present invention in detail with reference to the accompanying drawings.

[0033] like Figures 1 to 12 As shown, a rotating connection structure applied to the trolley in 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, which can enable the two to be rotatably connected. 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 in a direction close to the trolley base 1, so that the trolley 100 can be folded and stored.

[0034] Specifically, the design of the rotating assembly 5 provides a stable rotation center, 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, so that the trolley side net 2 can 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 using 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 in the direction closer to the trolley base 1), forcing the trolley side net 2 to rotate close to the trolley base 1 to achieve folding of the trolley 100, thereby 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, making the trolley more efficient during transportation and storage. The folding trolley can be used in multiple occasions, such as in warehouses, factories, distribution centers, etc., and can flexibly respond to different logistics needs.

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

[0037] like Figures 1 to 12 As shown, the trolley base connector 3 of this embodiment is provided with a receiving groove 31, and 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 that communicates with the receiving groove 31, and the first opening 32 can allow 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 that communicates with the receiving groove 31, and the second opening 33 can allow the trolley side net connector 4 to rotate in and out of the receiving groove 31.

[0038] Specifically, the accommodating groove 31 provides a stable storage space for the trolley side net connector 4. The first opening 32 is in communication with the accommodating groove 31, allowing the top of the trolley side net connector 4 to extend and be connected to the trolley side net 2, so that when the trolley needs to be unfolded for use, most of the trolley side net connector 4 is located in the accommodating groove 31. The trolley base connector 3 can provide protection for the trolley side net connector 4, reduce damage to the trolley side net connector 4 caused by collision and 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 accommodating groove 31, providing a channel for allowing 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 in and out of the accommodating groove 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 obstacles during rotation and makes the operation smoother.

[0040] Through the design of the accommodating slot and two openings, users can quickly complete the unfolding and folding operations of the trolley without complicated steps. This convenience improves the practicality and user experience of the trolley.

[0041] Furthermore, the receiving groove 31 can effectively fix the position of the trolley side net connector 4, preventing it from loosening or falling off when not in use, thereby enhancing the stability of the overall structure of the trolley. Moreover, in the folded state, the trolley side net connector 4 is accommodated in the groove, effectively protecting the trolley side net connector 4 from external damage and extending the service life of the trolley.

[0042] like Figures 1 to 12 As shown, the accommodating groove 31 of this embodiment includes an accommodating section 311 and at least one rotating section 312, at least one rotating section 312 is located on one side of the accommodating section 311, the trolley side net connector 4 is located in the accommodating section 311, and the rotating assembly 5 is located in the rotating section 312.

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

[0044] Furthermore, the arrangement of the rotating section 312 enables the rotating assembly 5 to work flexibly, and the trolley side net connector 4 rotates at the accommodating section 311. This design ensures stability and efficiency during rotation.

[0045] Preferably, the design of the receiving groove separates structural parts with different functions, thereby enhancing the clarity of the overall structure and enabling users to more intuitively understand the functions and effects of each part during operation.

[0046] Preferably, the accommodating 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 a rotation function. This division of labor design enhances the protection effect of each part.

[0047] Preferably, the number of the rotating sections 312 in this embodiment is two, and they are arranged on both sides of the accommodating section 311. The design of the two rotating sections 312 can form a symmetrical structure on both sides of the accommodating section 311. Such symmetry helps to balance the force when the trolley side net connector 4 rotates, provides more balanced support, reduces shaking and instability during operation, ensures safety during use, and makes the trolley safer and more reliable when in use.

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

[0049] like Figures 1 to 12As shown, the length direction of the rotating section 312 of this embodiment is arranged along the length direction of the trolley base connector 3, and 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 in the accommodating section 311.

[0050] Specifically, the rotating section 312 is consistent with the length direction of the base connector 3, which can ensure that the overall structure of the rotating component 5 and the trolley maintains good alignment during operation, and helps to improve the stability of the connection.

[0051] Specifically, 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 also slide up and down in the accommodating 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 accommodating section 311 can be more effectively utilized, so that the trolley side net connector 4 can be stored in a suitable position when not in use to prevent it from occupying too much space.

[0052] Furthermore, the up and down sliding function of the rotating component 5 allows the user to quickly adjust the position of the trolley side net connector 4 according to actual needs, which is more convenient to operate and more 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, the trolley side net connector 4 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 to the trolley base 1, which can effectively improve the overall stability.

[0053] Moreover, the thickness of the trolley side net 2 may vary in different usage scenarios. This design allows the user to quickly adjust the position of the trolley side net connector 4 to accommodate trolley side nets 2 of different specifications, thereby avoiding the difficulty of folding and storing the trolley 100 due to size mismatch.

[0054] 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.

[0055] like Figures 1 to 12 As shown, one end of the rotating section 312 of this embodiment is connected to the first opening 32, and the rotating component 5 can be separated from the trolley base connector 3 through the first opening 32, so that the trolley side net connector 4 can be separated from the trolley base connector 3 through the first opening 32.

[0056] Specifically, through the design of the first opening 32, the rotating assembly 5 and the trolley side net connector 4 connected thereto can be removed from the base connector 3. This design reduces the tools and steps required to remove the trolley side net connector 4 from the trolley base connector 3, making maintenance or replacement operations more efficient. The user can quickly install or adjust the rotating assembly 5 through the first opening 32. This open design makes the overall structure more flexible and easier to operate.

[0057] 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 flexibly configure it according to their needs.

[0058] When the rotating assembly 5 or the side net connector 4 needs to be cleaned or replaced, the user only needs to 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.

[0059] This design makes the entire structure simpler, reduces unnecessary connections and fixes, reduces potential failure points, and improves equipment reliability.

[0060] Furthermore, the open design of the rotary connection structure can adapt to different types of rotating components 5, trolley side net connectors 4 or trolley base connectors 3. Users can select and replace them according to their needs, thereby enhancing the applicability of the trolley.

[0061] like Figures 1 to 12 As shown, the rotating section 312 of this embodiment includes a moving area 313 and an escape area 314 connected in sequence from bottom to top, the escape area 314 is connected to the first opening 32, the width of the escape area 314 is smaller than the width of the moving area 313, and the rotating component 5 is provided with an escape guide plane 51. When the rotating component 5 is rotated until the escape guide plane 51 is parallel or nearly parallel to the side wall of the moving area 313, the rotating component 5 can move into the escape area 314 and escape from the first opening 32.

[0062] Specifically, through the design of the escape guide plane 51, it is ensured that the rotating component 5 can enter the escape area 314 only when the rotating component 5 rotates to a specific position (that is, when the escape guide plane 51 is parallel or nearly parallel to the side wall of the moving area 313). At this time, the escape guide plane 51 is close to or against the side wall of the moving area 313. This design can effectively prevent the trolley side net connector 4 from accidentally escaping or being operated incorrectly from the trolley base connector 3, thereby providing good safety.

[0063] The difference in width between the escape area 314 and the movement area 313 ensures that the rotating assembly 5 must pass through a clear path when moving, thereby ensuring that the movement trajectory of the rotating assembly 5 is more controllable and preventing malfunction or damage caused by misoperation.

[0064] By setting the width of the escape zone 314 to be smaller than the moving zone 313, the user can be effectively guided to follow a specific order and method during disassembly, avoiding assembly problems caused by improper operation. Specific steps are required to achieve the loading and unloading of the trolley side net connector 4 on the trolley base connector 3, ensuring that the trolley side net connector 4 can only be escaped or assembled on the trolley base connector 3 when the rotating component 5 is in the correct position during operation, thereby reducing the risk of misoperation and improving safety of use.

[0065] The design of the guide plane allows the user to more intuitively judge the status of the rotating component 5 when disassembling or installing, ensuring that it is in the appropriate position, which helps to improve the accuracy of the operation.

[0066] like Figures 1 to 12 As shown, the width of the rotating section 312 of this embodiment is larger than the outer diameter of the rotating assembly 5, so that the rotating assembly 5 can move in the width direction of the rotating section 312. With such a design, when the rotating assembly 5 rotates in the rotating section 312, the rotating section 312 can also provide adjustment space for the rotating assembly 5, which means that there is enough space for position adjustment when the rotating assembly 5 rotates. This flexible space design can adapt to trolley side nets 2 of different lengths and shapes. The mobility of the rotating assembly 5 in the rotating section 312 ensures that the trolley side net 2 can rotate smoothly and be accurately docked to the trolley base 1 for storage, avoiding improper storage due to insufficient space.

[0067] Furthermore, through the above design, users can feel more freedom and flexibility during operation, avoid operational difficulties caused by space limitations, and improve the overall user experience.

[0068] like Figures 1 to 12 As shown, a limiting slot 315 corresponding to the rotating component 5 is provided on the side of the rotating section 312 close to the second opening 33 of the embodiment. When the rotating component 5 is inserted into the limiting slot 315, the trolley side net connector 4 can be rotated in the direction away from the second opening 33. With such a design, when the required goods need to be taken out 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 inserted into the limiting slot 315. At this time, the trolley side nets 2 on both sides are away from each other and move in the direction away from the trolley base 1 to expand the internal space of the trolley 100, making it easier for the user to take goods out of the trolley 100.

[0069] Preferably, the user can easily snap the rotating assembly 5 into the limit slot 315 by manipulating the trolley side net 2 or the trolley side net connector 4, 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.

[0070] Preferably, the trolley side net connector 4 of this embodiment includes a first connecting section 41 and a second connecting section 42 that are connected in sequence from top to bottom. A latch position 43 is provided at the connection between the first connecting section 41 and the second connecting section 42. A bayonet 321 corresponding to the latch position 43 is provided on the first opening 32. When the rotating assembly 5 is snapped into the limiting slot 315, the trolley side net connector 4 can be rotated away from the second opening 33, and the latch position 43 can be snapped into the bayonet 321. Through such a design, the latch position 43 and the bayonet 321 can further provide a positioning function for the trolley side net connector 4 and the trolley base connector 3, and further provide a clear positioning for the trolley side net connector 4, so that the trolley side net connector 4 can stably maintain a predetermined position after rotation, reducing swinging or offset caused by movement.

[0071] When the rotating assembly 5 is inserted into the limiting slot 315, the combination of the latch 43 and the bayonet 321 will form an additional support point, reducing the stress burden on the rotating assembly 5 after it is inserted into the limiting slot 315, thereby ensuring the service life of the rotating assembly 5. In addition, through the dual fixed positioning of the latch 43 and the bayonet 321, and the rotating assembly 5 and the limiting slot 315, the expansion degree of the trolley side nets 2 on both sides on the trolley base 1 is limited, thereby preventing the trolley side nets 2 on both sides from rotating to too large a position on the trolley base 1, resulting in excessive expansion of the internal space of the trolley 100, and difficulty or inconvenience in operation.

[0072] Furthermore, by limiting the extent of expansion of the trolley side net 2, excessive expansion of the trolley's internal space is avoided, which helps users to efficiently store and retrieve goods in a limited space and improves the practicality of the equipment.

[0073] Moreover, with such a design, there is no need to open another opening on the trolley base connector 3, so that the trolley side net connector 4 can be rotated in the other direction, thereby ensuring the structural strength of the trolley base connector 3, and being able to limit the rotation angle of the trolley side net connector 4 in the other direction, and limiting the degree of rotation and opening of the trolley side net 2 on the trolley base 1, thereby avoiding excessive expansion of the internal space of the trolley 100, which would cause difficulty or inconvenience in operation, and making it easier for users to operate.

[0074] In other embodiments, a third opening is provided on the trolley base connector 3, and the third opening is arranged corresponding to the second opening 33. The trolley side net connector 4 can be rotated in the opposite direction on the trolley base connector 3 through the third opening. A suitable design can be selected according to actual needs.

[0075] like Figures 1 to 12 As shown, a limit assembly 6 is further provided between the trolley side net connector 4 and the trolley base connector 3 of the present embodiment, and the limit assembly 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 maintains a vertical or nearly vertical state with the trolley base 1, thereby maintaining the trolley 100 in the unfolded state. With such a design, it can be ensured that when the trolley 100 is in the unfolded use state, the trolley side net connector 4 is locked on the trolley base connector 3 by the limit assembly 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, so as to limit the movement of the trolley side net 2, which can effectively prevent the goods from falling due to the tilting or opening of the trolley side net 2 during transportation, thereby improving safety.

[0076] Furthermore, the stable structure means that users do not need to frequently adjust the angle of the trolley side net when using the trolley, so they can focus more on handling operations and improve overall work efficiency.

[0077] like Figures 1 to 12 As shown, the limiting assembly 6 of 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 .

[0078] Specifically, the cooperation between the limit block 61 and the limit groove 62 forms a mechanical locking mechanism. When the limit block 61 is inserted into the limit groove 62, the trolley side net connector 4 can be locked on the trolley base connector 3 to prevent it from moving due to external force or improper operation.

[0079] Through this design, the limit block 61 can effectively limit the relative displacement of the trolley side net connector 4, ensuring that the trolley side net 2 always remains vertical or nearly vertical to the trolley base 1 during use, avoiding safety hazards caused by position changes.

[0080] The design of the limiting assembly 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.

[0081] Furthermore, the design of the limiting block 61 and the limiting slot 62 makes the locking and unlocking process simple and intuitive, allowing the user to quickly complete the operation and enhance the user experience.

[0082] Furthermore, the structure of the limit assembly 6 is simple, which is convenient for users to maintain and inspect, and reduces the probability of potential failures.

[0083] Preferably, the limit groove 62 in this embodiment is located at the top of the trolley base connector 3, that is, below the first opening 32, and the limit block 61 is located at the top of the trolley side net connector 4, so that when locking, the limit block 61 can be naturally inserted and stuck into the limit groove 62. Such a layout design can maximize the use of gravity and deadweight effects, ensuring that the limit block 61 can stably enter the limit groove 62 and achieve locking.

[0084] Preferably, the relative position design of the limit block 61 and the limit groove 62 ensures that when downward pressure is applied to the trolley side net connector 4, the limit block 61 can smoothly enter the limit groove 62, thereby effectively locking the trolley side net connector 4. This design reduces the complexity of operation and improves the reliability of locking.

[0085] Furthermore, this structural design can effectively prevent the side net connector 4 from being accidentally displaced during use, ensuring that it always remains in the correct working state, thereby reducing the risk of goods falling.

[0086] Specifically, when the user is using the trolley, he only needs to press the trolley side net connector 4 downwards, and it will be automatically locked in the limit slot 62. The operation is simple, intuitive and easy to understand.

[0087] Furthermore, the limiting groove 62 is provided on the top of the trolley base connector 3, so that the overall design is more reasonable in space utilization, which helps to improve the overall design aesthetics and functionality of the trolley.

[0088] Preferably, the surfaces of the limit block 61 and the limit groove 62 have a certain curvature. The curvature design can help the limit block 61 to be aligned and stuck more easily when inserted into the limit groove 62. When the user applies downward pressure on the trolley side net connector 4, the curved surface can guide the limit block 61 to enter the limit groove 62 smoothly, reducing friction and resistance during the alignment process and reducing the jamming phenomenon caused by incorrect position.

[0089] Compared with 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.

[0090] Moreover, the arc-shaped interface can better disperse and withstand the impact force when subjected to stress, thereby increasing the stability of the lock. When the load changes or external force is applied, the arc design helps to maintain the locking state of the limit block 61 and reduce the risk of accidental loosening.

[0091] Preferably, the curved design not only has functional advantages, but also improves the aesthetics of the overall appearance, giving users a better visual experience.

[0092] Preferably, there are two limit blocks 61, which are arranged on both sides of the trolley side net connector 4. The limit grooves 62 are arranged corresponding to the limit blocks 61 and are arranged on both sides of the accommodating grooves 31. The design of the two limit blocks 61 can effectively disperse 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. Regardless of whether it is subjected to longitudinal or lateral forces, the cooperation of the two limit blocks can provide more uniform support, and the trolley side net connector 4 is locked firmly on the trolley base connector 3, reducing the risk of accidental loosening during transportation, thereby improving overall safety.

[0093] Preferably, in other embodiments, the limit assembly can also adopt structures such as a locking pin assembly or an adjusting nut assembly, and a suitable design can be selected according to actual needs.

[0094] like Figures 1 to 12 As shown, a trolley of the present embodiment has an unfolded state and a folded storage state, which includes a trolley side net 2, a trolley base 1 and a rotating connection structure as described in any one of the above items, the number of the trolley side nets 2 is two, and they are respectively arranged on both sides of the trolley base 1, and there is at least one rotating connection structure between each of the trolley side nets 2 and the trolley base 1, each of the trolley base connectors 3 is connected to the trolley base 1, and each of the trolley side net connectors 4 is connected to the corresponding trolley side net 2, and the trolley side net connector 4 can drive the corresponding trolley side net 2 to rotate on the trolley base 1, so that the trolley 100 is converted to the unfolded state or the folded storage state.

[0095] Specifically, in the deployed state, the trolley side net 2 and the trolley base 1 form a stable frame. The trolley side net 2 and the trolley base 1 form a certain angle, and the two are perpendicular or nearly perpendicular to each other, providing a large space for placing items or providing protection. At this time, the rotating connection structure is in the deployed fixed position, and the trolley base connector 3 and the trolley side net connector 4 are locked by the limit assembly 6 to ensure that the trolley side net 2 is not easily retracted accidentally.

[0096] In the folded state, the trolley side net 2 is rotated to a position parallel to or close to the trolley base 1 through the rotating connection structure, thereby reducing the occupied space and facilitating storage. The rotating connection structure allows the trolley side net 2 to rotate and be stored smoothly, so that the trolley 100 can be folded and stored to form a more compact storage form, thereby greatly reducing the space required for storing the trolley 100, making the trolley more efficient during transportation and storage. The folding trolley can be used in multiple occasions, such as in warehouses, factories, distribution centers, etc., and can flexibly respond to different logistics needs.

[0097] Preferably, the trolley further includes a mesh door and a back net, the mesh door corresponds one-to-one to the trolley side net 2, and each of the mesh door is rotatably connected to the trolley side net 2, and the back net is rotatably connected to the trolley base 1. When storing, the mesh door rotates to a state parallel to the trolley side net 2, and as the trolley side net 2 rotates to a state parallel or nearly parallel to the trolley base 1, the back net rotates to a state parallel or nearly parallel to the trolley base 1 to achieve folding and storage of the trolley.

[0098] In other embodiments, there is only one mesh door, which is rotatably connected to one of the trolley side nets 2. When storing, the mesh door is rotated to a state parallel to the corresponding trolley side net 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 and thus reducing the folded volume of the trolley.

[0100] The above examples are merely used to further illustrate the technical content of the present invention for easier understanding by the reader. However, they do not limit the implementation of the present invention to these examples. Any technical extension or reinvention based on the present invention is protected by the present invention. The scope of protection of the present invention shall be determined by the claims.

Claims

1. A rotary connection structure applied to a trolley, characterized in that: The trolley base connecting member (3) is connected to the trolley base (1) and the trolley side net connecting member (4) is connected to the trolley side net (2). A rotating assembly (5) is provided between the trolley side net connecting member (4) and the trolley base connecting member (3) so as to enable the two to be rotatably connected. The trolley side net connecting member (4) can be rotated on the trolley base connecting member (3) through the rotating assembly (5), and the trolley side net connecting member (4) can drive the trolley side net (2) to rotate in a direction close to the trolley base (1), thereby allowing the trolley (100) to be folded and stored.

2. The rotary connection structure for a trolley according to claim 1, characterized in that: The trolley base connecting member (3) is provided with a receiving groove (31), and the trolley side net connecting member (4) is located in the receiving groove (31). The top of the trolley base connecting member (3) is provided with a first opening (32) communicating with the receiving groove (31), and the first opening (32) can allow the top of the trolley side net connecting member (4) to extend out; the side wall of the trolley base connecting member (3) is provided with a second opening (33) communicating with the receiving groove (31), and the second opening (33) can allow the trolley side net connecting member (4) to rotate into and out of the receiving groove (31).

3. The rotary connection structure for a trolley according to claim 2, characterized in that: The accommodating groove (31) comprises an accommodating section (311) and at least one rotating section (312), wherein at least one rotating section (312) is located on one side of the accommodating section (311), the trolley side net connector (4) is located in the accommodating section (311), and the rotating assembly (5) is located in the rotating section (312).

4. The rotary connection structure for a trolley according to claim 3, characterized in that: The length direction of the rotating section (312) is arranged along the length direction of the trolley base connecting member (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 member (4) can slide up and down in the accommodating section (311).

5. The rotary connection structure for a trolley according to claim 4, characterized in that: One end of the rotating section (312) is in communication with the first opening (32), and the rotating assembly (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).

6. The rotary connection structure for a trolley according to claim 5, characterized in that: The rotating section (312) includes a moving area (313) and an escape area (314) connected in sequence from bottom to top, the escape area (314) is communicated with the first opening (32), the width of the escape area (314) is smaller than the width of the moving area (313), and an escape guide plane (51) is provided on the rotating component (5). When the rotating component (5) rotates until the escape guide plane (51) is parallel or nearly parallel to the side wall of the moving area (313), the rotating component (5) can move into the escape area (314) and escape from the first opening (32).

7. The rotary connection structure for a trolley according to claim 3, characterized in that: A limiting slot (315) corresponding to the rotating assembly (5) is provided on a side of the rotating section (312) close to the second opening (33); when the rotating assembly (5) is engaged with the limiting slot (315), the trolley side net connector (4) can rotate in a direction away from the second opening (33).

8. The rotary connection structure for a trolley according to claim 1, characterized in that: A limiting assembly (6) is further provided between the trolley side net connecting member (4) and the trolley base connecting member (3), and the limiting assembly (6) is capable of limiting the relative position between the trolley side net connecting member (4) and the trolley base connecting member (3), so that the trolley side net (2) maintains a vertical or nearly vertical state with respect to the trolley base (1).

9. The rotary connection structure for a trolley according to claim 8, characterized in that: The limiting assembly (6) comprises a limiting block (61) and a limiting slot (62). When the limiting block (61) is inserted into the limiting slot (62), the trolley side net connector (4) is limited on the trolley base connector (3).

10. A trolley having an unfolded state and a folded storage state, characterized in that: It comprises a trolley side net (2), a trolley base (1) and a rotating connection structure as claimed in any one of claims 1 to 9, wherein the number of the trolley side nets (2) is two, and they are respectively arranged on both sides of the trolley base (1), and at least one rotating connection structure is provided between each of the trolley side nets (2) and the trolley base (1), each of the trolley base connecting parts (3) is connected to the trolley base (1), and each of the trolley side net connecting parts (4) is connected to the corresponding trolley side net (2), and the trolley side net connecting parts (4) can drive the corresponding trolley side net (2) to rotate on the trolley base (1), so that the trolley (100) is converted to an unfolded state or a folded storage state.

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