A folding cabinet with optimized folding structure

Abstract

This utility model discloses a folding cabinet with an optimized folding structure, including a base. The base has a first side panel, a second side panel, and a third side panel. The base has an annular boss, and the first, second, and third side panels are hinged to the annular boss with the hinge axes increasing in height sequentially, thus reducing the height of the folded cabinet. The bottom of the first side panel has a first mounting groove and a second mounting groove. When the first, second, and third side panels are unfolded, the first and second mounting grooves engage with the annular boss, and the bottom of the third side panel abuts against the annular boss, making the seams of the first, second, and third side panels flush. This utility model, by placing the hinge axes of the first, second, and third side panels on different horizontal planes, reduces the height of the folded first, second, and third side panels while also making their seams flush, improving the storage convenience and aesthetics of the folding cabinet.

Description

Technical Field

[0001] This utility model belongs to the field of folding cabinets, and specifically relates to a folding cabinet with an optimized folding mechanism. Background Technology

[0002] Folding cabinets, as a new type of storage tool, are popular due to their foldable and modular design, which can meet different storage needs. However, most existing folding cabinets use different folding heights for the third side panels to facilitate stacking, reserving stacking gaps by varying the folding thickness of the third side panels. This results in issues such as excessive folding thickness and uneven seams, affecting the storage convenience and aesthetics of the folding cabinet.

[0003] In existing technologies, such as patent document CN222091122U, a folding storage cabinet is disclosed. This cabinet is folded and stored by hinged connections between its door frame, first side panel, and second side panel to a second base. However, this folding cabinet results in a relatively high folded thickness and uneven seams after folding, affecting both the convenience and aesthetics of storage. Summary of the Invention

[0004] To address the problems in the existing technology, this utility model proposes a folding cabinet with an optimized folding mechanism. By setting the hinge axes of the first, second, and third side panels on different horizontal planes, the height of the first, second, and third side panels after folding is reduced, while the seams of the first, second, and third side panels are made flush, thus improving the storage convenience and aesthetics of the folding cabinet.

[0005] This invention is achieved as follows: a folding cabinet with an optimized folding structure includes a base, on which multiple side panels are hinged. The multiple side panels include a first side panel, a second side panel, and two opposing third side panels.

[0006] The base has an upwardly extending annular protrusion on its periphery. The first side plate, the second side plate, and the two third side plates are all hinged to the annular protrusion. The hinge axis positions of the first side plate, the second side plate, and each third side plate increase sequentially in height. This allows the first, second, and third side plates to be stacked sequentially when the side plates are folded, reducing the folding thickness and making the folding cabinet easier to fold, thus improving its storage convenience. Furthermore, when the side plates are unfolded into a vertical state, the seam line formed by the outer lower edge of all side plates and the base is on the same horizontal plane.

[0007] The bottom of the first side panel is provided with a first mounting groove adapted to the annular boss, and the bottom of the second side panel is provided with a second mounting groove adapted to the annular boss. Each of the two third side panels is provided with a first insertion part, and both the first and second side panels are provided with a first insertion groove corresponding to the first insertion part. When the side panel is unfolded, the first mounting groove and the second mounting groove are engaged with the annular boss. The first insertion part is inserted into the first insertion groove. Since the edge of the annular boss is flush, the seam line of the first side panel, the second side panel, and the third side panel is flush through the engagement method of the first mounting groove and the second mounting groove with the annular boss, which improves the aesthetics of the folding cabinet. When the first insertion part is inserted into the first insertion groove, the end of the first insertion part passes through the first insertion groove, so that the third side panel is fastened to the first side panel or the second side panel, which improves the stability of the first side panel, the second side panel, and the third side panel after unfolding, thereby improving the reliability of the folding cabinet.

[0008] Preferably, the annular boss is provided with a first hinge portion, a second hinge portion, and a third hinge portion corresponding to the first side plate, the second side plate, and the third side plate, respectively. The first hinge portion and the second hinge portion are located within the enclosed space of the annular boss. By placing the first hinge portion and the second hinge portion within the enclosed space of the annular boss, the gap formed when the first and second side plates are hinged to the base is hidden, avoiding additional uneven seam lines caused by the height difference between the first and second side plates due to the hinge, and further improving the aesthetics of the folding cabinet.

[0009] Specifically, the first side plate is provided with a first slot corresponding to the first hinge portion, the side wall of the first slot is provided with a first hinge shaft, the first hinge portion is provided with a first hinge hole, and the first hinge shaft is snapped into the first hinge hole, so that the first side plate is hinged to the first hinge portion; by snapping, the first side plate can be installed without the aid of other tools, thereby enabling the first side plate to be installed quickly and improving the installation convenience of the first side plate.

[0010] The second side plate is provided with a second slot corresponding to the second hinge part. The side wall of the second slot is provided with a second hinge shaft. The second hinge part is provided with a second hinge hole. The second hinge shaft is snapped into the second hinge hole, so that the second side plate is hinged to the second hinge part. Similarly, the installation convenience of the second side plate is improved by snapping.

[0011] The third side plate is provided with a third groove corresponding to the third hinge part, the side wall of the third groove is provided with a third hinge shaft, the third hinge part is provided with a third hinge hole, and the third hinge shaft is snapped into the third hinge hole, so that the third side plate is hinged to the third hinge part; the snap-fit ​​method improves the installation convenience of the third side plate.

[0012] Specifically, the third hinge hole is waist-groove shaped and extends longitudinally. Since the third side plate needs to be inserted into the first insertion slot after unfolding, the movement trajectory of the third side plate requires not only rotation but also longitudinal movement. The waist-groove shaped third hinge hole can meet the movement requirements of the third side plate, allowing the third side plate to be inserted into the base after rotating into position, thus improving the stability of the third side plate.

[0013] Specifically, the first, second, and third hinge shafts gradually increase in size from bottom to top, forming an inclined transition section. Each of the first, second, and third slots has a hollowed-out portion on the side corresponding to the first, second, and third hinge shafts. When the first, second, and third hinge shafts are engaged with the first, second, and third hinge holes respectively, the first, second, and third slots elastically deform towards their corresponding hollowed-out portions. Each transition section serves as a transition when the first, second, and third hinge shafts are engaged, ensuring both reliability and ease of engagement. Simultaneously, each hollowed-out portion causes the sidewalls of the first, second, and third slots to elastically deform during engagement, further enhancing the ease of engagement.

[0014] Preferably, the third side panel is further provided with a second insertion part, and the first and second side panels are further provided with a second insertion slot. When the folding cabinet is unfolded, the second insertion part is inserted into the second insertion slot. The insertion of the second insertion part and the second insertion slot for displaying the folding cabinet further improves the stability of the first, second, and third side panels after they are unfolded, thereby improving the reliability of the folding cabinet.

[0015] Specifically, the end of the first plug-in portion gradually increases in size from the outside to the inside, forming an inclined transition surface. The inner end of the transition surface has a blocking surface. When the first plug-in portion is inserted into the first plug-in groove, the blocking surface abuts against the end face of the first plug-in groove. The blocking surface prevents the first plug-in portion from accidentally detaching from the first plug-in groove, further improving the stability of the first side plate, second side plate, and third side plate after unfolding. The transition surface prevents excessive deformation of the first plug-in portion during insertion, thereby reducing wear and increasing its service life.

[0016] Preferably, the first side panel has a hinged door panel, which opens or closes the folding cabinet by rotation. The door panel also has a magnetic component, which magnetically connects to the first side panel when the door is closed. The door panel also has a handle for opening or closing, improving convenience. The magnetic component prevents accidental opening of the door while allowing it to open quickly when needed, thus balancing reliability and convenience.

[0017] Preferably, the system also includes a cover plate, which engages with the first, second, and third side panels from top to bottom after the first, second, and third side panels are unfolded. The cover plate further enhances the stability of the unfolded first, second, and third side panels, making the connection between them more robust. Furthermore, when multiple folding cabinets are stacked, the cover plate of the lower cabinet engages with the base of the upper cabinet, increasing the load-bearing capacity during stacking, expanding the applicability of the folding cabinets, and improving their versatility.

[0018] Specifically, the top of the cover plate is provided with an annular snap-fit ​​part, and the bottom of the base is provided with a snap-fit ​​groove that matches the snap-fit ​​part. When multiple folding cabinets are stacked, the snap-fit ​​groove of the upper folding cabinet engages with the snap-fit ​​part of the lower folding cabinet. When the snap-fit ​​part and the snap-fit ​​groove engage, the risk of accidental sliding of the stacked folding cabinets is reduced, and the safety and reliability of stacked cabinets are improved.

[0019] Preferably, the bottom of the base is provided with a plurality of staggered first reinforcing ribs, and the first side plate, second side plate, and third side plate are provided with a plurality of longitudinally arranged second reinforcing ribs. The first reinforcing ribs are used to reduce the weight of the base while ensuring the strength and rigidity of the base, thereby facilitating the stacking of folding cabinets and improving the convenience of stacking folding cabinets; the second reinforcing ribs are used to increase the strength and rigidity of the first side plate, second side plate, and third side plate, thereby increasing the load-bearing capacity of the first side plate, second side plate, and third side plate when folding cabinets are stacked, and extending the service life of the first side plate, second side plate, and third side plate.

[0020] Preferably, the base is equipped with rotatably connected rollers and corresponding casters, the casters being detachably connected to the base. When multiple folding cabinets are stacked, the bottommost folding cabinet has the casters, while the casters of the other folding cabinets are removed. The casters reduce friction between the folding cabinets and the ground during movement, improving the ease of handling. The rollers enhance the convenience of stacking folding cabinets. Normally, when stacking folding cabinets, to save effort, the upper folding cabinet is first placed on top of the lower one, and then the upper folding cabinet is pushed to the stacking position to complete the stacking. The rollers reduce frictional resistance when pushing the upper folding cabinet, improving the convenience of stacking.

[0021] Specifically, the caster wheel is also equipped with a braking component, which includes a brake switch. The brake switch switches the caster wheel between a rotating and a stationary state. This braking component prevents the folding cabinet from sliding accidentally, thus improving its stability.

[0022] Preferably, the third side panel is also provided with a handle. The handle provides a force point for handling the folding cabinets when they are stacked, improving the convenience of handling the folding cabinets.

[0023] The beneficial effects of this utility model are:

[0024] This utility model proposes a folding cabinet with an optimized folding mechanism. On the one hand, by sequentially raising the hinge positions of the first, second, and third side panels, the first, second, and third side panels are stacked sequentially to reduce the folding thickness. At the same time, when the side panels are unfolded into a vertical state, the seam line formed by the lower outer edge of all side panels and the base is on the same horizontal plane, improving the storage convenience and aesthetics of the folding cabinet. On the other hand, the first insertion part and the first insertion slot improve the connection stability between the first, second, and third side panels, making the folding cabinet more reliable. Attached Figure Description

[0025] Figure 1 This is an exploded view of the folding cabinet of this utility model;

[0026] Figure 2 This is a folding diagram of the folding cabinet of this utility model;

[0027] Figure 3 This is a schematic diagram of the base of the folding cabinet of this utility model;

[0028] Figure 4 for Figure 3 An enlarged schematic diagram of point a;

[0029] Figure 5This is another schematic diagram of the base of the folding cabinet of this utility model;

[0030] Figure 6 This is a schematic diagram of the second side panel of the folding cabinet of this utility model;

[0031] Figure 7 for Figure 6 An enlarged schematic diagram of point b;

[0032] Figure 8 This is a schematic diagram of the third side panel of the folding cabinet of this utility model;

[0033] Figure 9 for Figure 8 An enlarged view of point c;

[0034] Figure 10 This is a schematic diagram of the first side panel of the folding cabinet of this utility model;

[0035] Figure 11 This is a schematic diagram of the cover plate of the folding cabinet of this utility model.

[0036] Figure label:

[0037] 1. Base; 2. First side plate; 3. Second side plate; 4. Third side plate; 5. Cover plate; 11. Annular boss; 12. First reinforcing rib; 13. Snap-fit ​​groove; 14. Caster wheel; 15. First hinge part; 16. Second hinge part; 17. Third hinge part; 21. Door panel; 22. First mounting groove; 23. First slot; 31. First insertion groove; 32. Second insertion groove; 33. Second mounting groove; 34. Second reinforcing rib; 35. Second slot; 36. Hinge shaft; 37. Hollowed-out part; 41. First insertion part; 42. Second insertion part; 43. Handle; 44. Third slot; 51. Snap-fit ​​part; 171. Third hinge hole; 361. Transition part; 411. Transition surface; 412. Blocking surface. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] like Figures 1-11 As shown, a folding cabinet with optimized folding structure includes a base 1, on which multiple side panels are hinged. The multiple side panels include a first side panel 2, a second side panel 3, and two opposing third side panels 4.

[0040] The base 1 has an upwardly extending annular protrusion 11 on its periphery. The first side plate 2, the second side plate 3, and the two third side plates 4 are all hinged to the annular protrusion 11. The hinge axis positions of the first side plate 2, the second side plate 3, and each third side plate 4 are sequentially raised, so that when the side plates are folded, the first side plate 2, the second side plate 3, and the third side plate 4 are stacked in sequence to reduce the folding thickness, making the folding cabinet easier to fold and improving the storage convenience of the folding cabinet. When the side plates are unfolded into a vertical state, the seam line formed by the outer lower edge of all side plates and the base 1 is on the same horizontal plane.

[0041] In this embodiment, the bottom of the base 1 is provided with a plurality of staggered first reinforcing ribs 12, and the first side plate 2, the second side plate 3, and the third side plate 4 are provided with a plurality of longitudinally arranged second reinforcing ribs 34. The first reinforcing ribs 12 are used to reduce the weight of the base 1 while ensuring the strength and rigidity of the base 1, thereby facilitating the stacking of folding cabinets and improving the convenience of stacking folding cabinets; the second reinforcing ribs 34 are used to improve the strength and rigidity of the first side plate 2, the second side plate 3, and the third side plate 4, thereby improving the load-bearing capacity of the first side plate 2, the second side plate 3, and the third side plate 4 when folding cabinets are stacked, and extending the service life of the first side plate 2, the second side plate 3, and the third side plate 4.

[0042] In this embodiment, the base 1 is equipped with rotatably connected rollers and corresponding casters 14. The casters 14 are detachably connected to the base 1. When multiple folding cabinets are stacked, the bottommost folding cabinet is equipped with the casters 14, while the casters 14 of the other folding cabinets are removed. The casters 14 reduce the friction between the folding cabinets and the ground when moving, improving the convenience of handling the folding cabinets. The rollers improve the convenience of stacking folding cabinets. Normally, when stacking folding cabinets, to save effort, the upper folding cabinet is first placed on top of the lower folding cabinet, and then the upper folding cabinet is pushed to the stacking position to complete the stacking. The rollers reduce frictional resistance when pushing the upper folding cabinet, improving the convenience of stacking folding cabinets.

[0043] Specifically, the caster wheel 14 is also equipped with a braking component, which includes a brake switch. The brake switch allows the caster wheel 14 to switch between a rotating and a stationary state. This braking component prevents the folding cabinet from sliding accidentally, thus improving its stability.

[0044] The bottom of the first side plate 2 is provided with a first mounting groove 22 that matches the annular boss 11, and the bottom of the second side plate 3 is provided with a second mounting groove 33 that matches the annular boss 11; each of the two third side plates 4 is provided with a first insertion part 41, and the first side plate 2 and the second side plate 3 are provided with a first insertion groove 31 corresponding to the first insertion part 41; when the side plate is unfolded, the first mounting groove 22 and the second mounting groove 33 are engaged with the annular boss 11; the first insertion part 41 is inserted into the first insertion groove 31. Because the edges of the annular boss 11 are flush, the seams of the first side panel 2, the second side panel 3, and the third side panel 4 are flush through the snap-fit ​​method between the first mounting groove 22 and the second mounting groove 33 and the annular boss 11, improving the aesthetics of the folding cabinet. When the first insertion part 41 is inserted into the first insertion groove 31, the end of the first insertion part 41 passes through the first insertion groove 31, so that the third side panel 4 is fastened to the first side panel 2 or the second side panel 3, improving the stability of the first side panel 2, the second side panel 3, and the third side panel 4 after unfolding, thereby improving the reliability of the folding cabinet.

[0045] Specifically, the end of the first insertion part 41 gradually increases in size from the outside to the inside, forming an inclined transition surface 411. The inner end of the transition surface 411 is provided with a blocking surface 412. When the first insertion part 41 is inserted into the first insertion slot 31, the blocking surface 412 abuts against the end face of the first insertion slot 31. The blocking surface 412 prevents the first insertion part 41 from accidentally detaching from the first insertion slot 31, further improving the stability of the first side plate 2, the second side plate 3, and the third side plate 4 after unfolding. The transition surface 411 prevents excessive deformation of the first insertion part 41 during insertion in a short period, thereby reducing wear on the first insertion part 41 and increasing its service life.

[0046] In this embodiment, the third side panel 4 is further provided with a second insertion part 42, and the first side panel 2 and the second side panel 3 are further provided with a second insertion slot 32. When the folding cabinet is unfolded, the second insertion part 42 is inserted into the second insertion slot 32. The insertion of the second insertion part 42 and the second insertion slot 32 for displaying the folding cabinet further improves the stability of the first side panel 2, the second side panel 3, and the third side panel 4 after unfolding, thereby improving the reliability of the folding cabinet.

[0047] In this embodiment, the third side panel 4 is also provided with a handle 43. The handle 43 is used to provide a force point for moving the folding cabinets when they are stacked, thereby improving the convenience of moving the folding cabinets.

[0048] In this embodiment, the first side panel 2 is provided with a hinged door panel 21, which opens or closes the folding cabinet by rotation. The door panel 21 is also provided with a magnetic component, which magnetically connects to the first side panel 2 when the door panel 21 is closed. The door panel 21 is also provided with a handle for opening or closing, improving the convenience of opening and closing. The magnetic component prevents the door panel 21 from opening accidentally while also allowing it to open quickly when needed, thus balancing the reliability and convenience of the door panel 21.

[0049] In this embodiment, the magnetic component is a magnetic door catch.

[0050] In this embodiment, a cover plate 5 is also included. When the first side plate 2, the second side plate 3, and the third side plate 4 are unfolded, the cover plate 5 engages with the first side plate 2, the second side plate 3, and the third side plate 4 from top to bottom. The cover plate 5 further improves the stability of the first side plate 2, the second side plate 3, and the third side plate 4 after unfolding, making the connection between the first side plate 2, the second side plate 3, and the third side plate 4 more secure. On the other hand, when multiple folding cabinets are stacked, the cover plate 5 of the lower folding cabinet cooperates with the base 1 of the upper folding cabinet, improving the load-bearing capacity when the folding cabinets are stacked, increasing the applicability and versatility of the folding cabinets.

[0051] Specifically, the top of the cover plate 5 is provided with an annular snap-fit ​​part 51, and the bottom of the base 1 is provided with a snap-fit ​​groove 13 that matches the snap-fit ​​part 51. When multiple folding cabinets are stacked, the snap-fit ​​groove 13 of the upper folding cabinet snaps into the snap-fit ​​part 51 of the lower folding cabinet. When the snap-fit ​​part 51 and the snap-fit ​​groove 13 snap into each other, the risk of accidental sliding of the stacked folding cabinets is reduced, and the safety and reliability of stacked cabinets are improved.

[0052] Preferably, the annular boss is provided with a first hinge portion 15, a second hinge portion 16, and a third hinge portion 17, respectively corresponding to the first side plate 2, the second side plate 3, and the third side plate 4. The first hinge portion 15 and the second hinge portion 16 are located within the enclosed space of the annular boss 11. By placing the first hinge portion 15 and the second hinge portion 16 within the enclosed space of the annular boss 11, the gap formed when the first side plate 2 and the second side plate 3 are hinged to the base 1 is hidden, avoiding additional uneven seam lines caused by the height difference of the first side plate 2 and the second side plate 3 due to the hinge, and further improving the aesthetics of the folding cabinet.

[0053] Specifically, the first side plate 2 is provided with a first slot 23 corresponding to the first hinge part 15, the side wall of the first slot 23 is provided with a first hinge shaft 36, the first hinge part 15 is provided with a first hinge hole, and the first hinge shaft 36 is snapped into the first hinge hole, so that the first side plate 2 is hinged to the first hinge part 15. By snapping, the first side plate 2 can be installed without the aid of other tools, thereby enabling the first side plate 2 to be installed quickly and improving the installation convenience of the first side plate 2.

[0054] The second side plate 3 is provided with a second slot 35 corresponding to the second hinge part 16. The side wall of the second slot 35 is provided with a second hinge shaft 36. The second hinge part 16 is provided with a second hinge hole. The second hinge shaft 36 is snapped into the second hinge hole, so that the second side plate 3 is hinged to the second hinge part 16. Similarly, the installation convenience of the second side plate 3 is improved by snapping.

[0055] The third side plate 4 is provided with a third slot 44 corresponding to the third hinge part 17. The side wall of the third slot 44 is provided with a third hinge shaft 36. The third hinge part 17 is provided with a third hinge hole 171. The third hinge shaft 36 is snapped into the third hinge hole 171, so that the third side plate 4 is hinged to the third hinge part 17. The snap-fit ​​method improves the installation convenience of the third side plate 4.

[0056] Specifically, the third hinge hole 171 is waist-groove shaped and extends longitudinally. Since the third side plate 4 needs to be inserted into the first insertion slot after unfolding, the movement trajectory of the third side plate 4 requires not only rotation but also longitudinal movement. The waist-groove shaped third hinge hole 171 can meet the movement requirements of the third side plate 4, allowing the third side plate 4 to be inserted into the base after rotating into position, thus improving the stability of the third side plate 4.

[0057] Specifically, the first hinge shaft 36, the second hinge shaft 36, and the third hinge shaft 36 all gradually increase in size from bottom to top, forming an inclined transition portion 361; the first slot 23, the second slot 35, and the third slot 44 are all provided with a hollow portion 37 on the side corresponding to the first hinge shaft 36, the second hinge shaft 36, and the third hinge shaft 36, respectively. When the first hinge shaft 36, the second hinge shaft 36, and the third hinge shaft 36 are respectively engaged with the first hinge hole, the second hinge hole, and the third hinge hole 171, the first slot 23, the second slot 35, and the third slot 44 respectively undergo elastic deformation towards the corresponding hollow portion 37. Each transition portion 361 is used to transition when the first hinge shaft 36, the second hinge shaft 36 and the third hinge shaft 36 are engaged, which not only ensures the reliability of the engagement but also improves the convenience of engagement. At the same time, each hollow portion 37 causes the sidewalls of the first slot 23, the second slot 35 and the third slot 44 to undergo elastic deformation during engagement, which further improves the convenience of engagement.

[0058] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. A folding cabinet with optimized folding structure, comprising a base, wherein a plurality of side panels are hinged to the base, the plurality of side panels including a first side panel, a second side panel, and two opposing third side panels, characterized in that: The base has an upwardly extending annular boss on its periphery. The first side plate, the second side plate, and the two third side plates are all hinged to the annular boss. The hinge axis positions of the first side plate, the second side plate, and each third side plate are sequentially raised, so that when the side plates are folded, the first side plate, the second side plate, and the third side plate are stacked in sequence to reduce the folding thickness. When the side plates are unfolded into a vertical state, the seam line formed by the outer lower edge of all side plates and the base is on the same horizontal plane. The bottom of the first side plate is provided with a first mounting groove adapted to the annular boss, and the bottom of the second side plate is provided with a second mounting groove adapted to the annular boss; each of the two third side plates is provided with a first insertion part, and the first side plate and the second side plate are provided with a first insertion groove corresponding to the first insertion part; when the side plate is unfolded, the first mounting groove and the second mounting groove are engaged with the annular boss; the first insertion part is inserted into the first insertion groove.

2. The folding cabinet with optimized folding structure according to claim 1, characterized in that: The annular boss is provided with a first hinge portion, a second hinge portion, and a third hinge portion, which are respectively corresponding to the first side plate, the second side plate, and the third side plate, and the first hinge portion and the second hinge portion are located within the enclosed space of the annular boss.

3. A folding cabinet with optimized folding structure according to claim 2, characterized in that: The first side plate is provided with a first slot corresponding to the first hinge part, the side wall of the first slot is provided with a first hinge shaft, the first hinge part is provided with a first hinge hole, and the first hinge shaft is engaged in the first hinge hole so that the first side plate is hinged to the first hinge part. The second side plate is provided with a second slot corresponding to the second hinge part, the side wall of the second slot is provided with a second hinge shaft, the second hinge part is provided with a second hinge hole, and the second hinge shaft is engaged in the second hinge hole so that the second side plate is hinged to the second hinge part. The third side plate is provided with a third groove corresponding to the third hinge part. The side wall of the third groove is provided with a third hinge shaft. The third hinge part is provided with a third hinge hole. The third hinge shaft is engaged in the third hinge hole, so that the third side plate is hinged to the third hinge part.

4. A folding cabinet with optimized folding structure according to claim 3, characterized in that: The third hinge hole is shaped like a waist groove and extends longitudinally.

5. A folding cabinet with optimized folding structure according to claim 3, characterized in that: The first hinge shaft, the second hinge shaft, and the third hinge shaft all gradually increase in size from bottom to top, forming an inclined transition section; the first slot, the second slot, and the third slot are all provided with a hollowed-out portion on the side corresponding to the first hinge shaft, the second hinge shaft, and the third hinge shaft. When the first hinge shaft, the second hinge shaft, and the third hinge shaft are respectively engaged with the first hinge hole, the second hinge hole, and the third hinge hole, the first slot, the second slot, and the third slot respectively undergo elastic deformation towards the corresponding hollowed-out portion.

6. A folding cabinet with optimized folding structure according to claim 1, characterized in that: The third side panel is also provided with a second insertion part, and the first side panel and the second side panel are also provided with a second insertion slot. When the folding cabinet is unfolded, the second insertion part is inserted into the second insertion slot.

7. A folding cabinet with optimized folding structure according to claim 1, characterized in that: The end of the first plug-in portion gradually increases from the outside to the inside, forming an inclined transition surface. The inner end of the transition surface is provided with a blocking surface. When the first plug-in portion is inserted into the first plug-in groove, the blocking surface abuts against the end face of the first plug-in groove.

8. A folding cabinet with optimized folding structure according to claim 1, characterized in that: The first side panel is provided with a hinged door panel, which opens or closes the folding cabinet by rotating; the door panel is also provided with a magnetic component, which is magnetically connected to the first side panel when the door panel is closed.

9. A folding cabinet with optimized folding structure according to claim 1, characterized in that: It also includes a cover plate, which engages with the first side plate, the second side plate and the third side plate from top to bottom after the first side plate, the second side plate and the third side plate are unfolded; The top of the cover plate is provided with an annular snap-fit ​​part, and the bottom of the base is provided with a snap-fit ​​groove that matches the snap-fit ​​part. When multiple folding cabinets are stacked, the snap-fit ​​groove of the upper folding cabinet snaps into the snap-fit ​​part of the lower folding cabinet.

10. A folding cabinet with optimized folding structure according to claim 1, characterized in that: The bottom of the base is provided with a plurality of staggered first reinforcing ribs, and the first side plate, the second side plate and the third side plate are provided with a plurality of longitudinally arranged second reinforcing ribs.

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