A folding cabinet

Abstract

The present application relates to the technical field of cabinets, and discloses a folding cabinet, a side plate comprising a side plate body, a first connecting part and a first corner part, a back plate comprising a back plate body, a second corner part and a fourth connecting part, the first connecting part being hinged to a side frame through a vertically arranged first shaft, the first corner part being hinged to the second corner part through a vertically arranged second shaft, and the fourth connecting parts of the two back plates being detachably connected; in the folding state, the assembled state and the conversion process between the two states, the slot direction of the first connecting part and the slot direction of the fifth connecting part always remain in different directions, and the slot direction of the second connecting part and the slot direction of the third connecting part also always remain in different directions. Through the structure of the bent groove matched with the long shaft, the present application can reduce the economic cost, reduce the assembly difficulty in the later stage, and only needs an additional long shaft as spare material, replaces the hinge in the prior art, simplifies the hinge structure and reduces the economic cost.

Description

Technical Field

[0001] This invention relates to the field of cabinet technology, and in particular to a folding cabinet. Background Technology

[0002] In existing technologies, folding cabinets typically use hinges to connect the cabinet panels. If only one hinge is used, to ensure hinge quality, this hinge must be a long hinge, which is more expensive. If multiple short hinges are used, the short hinges need to be coaxial, requiring more precise assembly and impacting production speed. Although mass-produced standard parts can reduce manufacturing costs, it is difficult to reduce installation and component costs in mass-produced products. Furthermore, for longer rotating joints, to ensure hinge quality, long hinges or multiple sets of short hinges are usually used. Long hinges are more expensive, and multiple sets of short hinges need to meet coaxial requirements, demanding more precise assembly. In addition, both long and short hinges require welding or bolting to be installed on the cabinet panels, making assembly time-consuming and labor-intensive. Summary of the Invention

[0003] The purpose of this invention is to provide a folding cabinet that simplifies the hinge structure, reduces assembly difficulty, and lowers economic costs.

[0004] To achieve the above objectives, the present invention provides a folding cabinet, comprising:

[0005] A door frame, comprising two vertically arranged and oppositely positioned side frames;

[0006] The enclosure assembly consists of two sets, each corresponding to one of the two side frames. The enclosure assembly includes a side panel and a back panel. The side panel includes a side panel body and a first connecting portion and a first corner portion located on its lateral sides. The back panel includes a back panel body and a second corner portion and a fourth connecting portion located on its lateral sides. The first connecting portion is hinged to the side frame via a vertically arranged first axis, and the first corner portion is hinged to the second corner portion via a vertically arranged second axis. The fourth connecting portions of the two back panels are detachably connected.

[0007] Wherein, the first connecting portion extends from a part of the edge of the side plate body and is bent to form a groove, the first corner portion includes a second connecting portion bent to form a groove, the second corner portion includes a third connecting portion bent to form a groove, the side frame includes a fifth connecting portion bent to form a groove, the first shaft passes through the grooves of the first connecting portion and the fifth connecting portion, and the second shaft passes through the grooves of the second connecting portion and the third connecting portion;

[0008] When the folding cabinet is in the folded state, the side panel, the back panel, and the door frame are stacked, with the back panel located between the side panel and the door frame;

[0009] When the folding cabinet is in the unfolded state, the side panel is located between the door frame and the back panel, and the side panel is approximately perpendicular to the door frame and the back panel.

[0010] In the folding cabinet, during the folding state, unfolding state, and the transition between the two, the slot orientation of the first connecting part and the slot orientation of the fifth connecting part are always kept in different directions, and the slot orientation of the second connecting part and the slot orientation of the third connecting part are also always kept in different directions.

[0011] In some embodiments of this application:

[0012] The first connecting portion is disposed on a portion of the edge of the side plate body;

[0013] The side frame also includes a side frame body and a first limiting part. The first limiting part and the fifth connecting part are disposed behind the side frame body. The fifth connecting part is formed by extending and bending a portion of the edge of the first limiting part.

[0014] The first corner portion also includes a second limiting portion, and the second connecting portion is connected to the side plate body through the second limiting portion. The second connecting portion is formed by extending and bending a portion of the edge of the second limiting portion.

[0015] The second corner portion also includes a third limiting portion, and the third connecting portion is connected to the back plate body through the third limiting portion. The third connecting portion is formed by extending and bending a portion of the edge of the third limiting portion.

[0016] When the folding cabinet is in the unfolded state, a portion of the edge of the side panel body abuts against the outside of the fifth connecting part, a portion of the edge of the first limiting part abuts against the outside of the first connecting part, a portion of the edge of the second limiting part abuts against the outside of the third connecting part, and a portion of the edge of the third limiting part abuts against the outside of the second connecting part.

[0017] In some embodiments of this application:

[0018] The side frame also includes an extension disposed behind the side frame body, and the fifth connecting part is connected to the extension through the first limiting part.

[0019] In some embodiments of this application:

[0020] The side panel body, the first connecting part, and the first corner part are integrally formed;

[0021] The back panel body, the second corner portion, and the fourth connecting portion are integrally formed.

[0022] In some embodiments of this application:

[0023] The first corner portion further includes a first bend, a second bend, and a first transition plate. One end of the first transition plate is connected to the side plate body through the first bend, and the other end of the first transition plate is connected to the second limiting portion through the second bend. The side plate is bent in the same direction at least twice to form the side plate body, the first bend, the first transition plate, the second bend, and the second limiting portion.

[0024] The second corner portion further includes a third bend, a fourth bend, and a second transition plate. One end of the second transition plate is connected to the back plate body through the third bend, and the other end of the second transition plate is connected to the third limiting portion through the fourth bend. The back plate is bent at least twice in different directions to form the back plate body, the third bend, the second transition plate, the fourth bend, and the third limiting portion.

[0025] The second connecting part, the third connecting part, and the second shaft are concealed inside the folding cabinet by the first transition plate.

[0026] In some embodiments of this application:

[0027] The second fold angle is an acute angle, so that the outer surface of the first transition plate is flush with the outer surface of the back plate body.

[0028] In some embodiments of this application:

[0029] The fifth connecting part is located between the front and rear ends of the extension, and the rearward end of the extension is located on the outside of the side panel body to limit the maximum rotation angle of the side panel on the door frame.

[0030] In some embodiments of this application:

[0031] When the folding cabinet is in the unfolded state, the second folding angle abuts against the third folding angle, or the second folding angle abuts against the second transition plate, so as to limit the maximum rotation angle of the back panel on the side panel.

[0032] In some embodiments of this application:

[0033] When the folding cabinet is in the unfolded state, the slot of the first connecting part faces the rear and is located on the side of the side panel body facing the inside of the folding cabinet. The slot of the fifth connecting part faces the outside of the folding cabinet and is located in front of the first limiting part.

[0034] In some embodiments of this application:

[0035] When the folding cabinet is in a folded state, the slot of the first connecting part opens to the right and faces the inside of the folding cabinet. The opening of the first connecting part is located on the front side of the side panel body. The slot of the fifth connecting part faces the opposite direction to the slot of the first connecting part. The slot of the fifth connecting part is located on the front side of the first limiting part.

[0036] In some embodiments of this application:

[0037] When the folding cabinet is in the unfolded state, the groove direction of the second connecting part intersects with the front-back direction, and the groove direction of the second connecting part is inclined towards the direction of the back panel. The groove of the second connecting part is located on the side of the second limiting part away from the back panel. The groove direction of the third connecting part intersects with the front-back direction, and the groove direction of the third connecting part is inclined towards the inside of the folding cabinet. The groove of the third connecting part is located on the front side of the third limiting part.

[0038] In some embodiments of this application:

[0039] When the folding cabinet is in a folded state, the groove direction of the second connecting part intersects with the left and right directions, and the groove direction of the second connecting part is inclined towards the direction of the back panel. The opening of the second connecting part is located behind the third limiting part. The groove direction of the third connecting part intersects with the left and right directions, and the groove direction of the third connecting part is inclined towards the direction of the side panel. The groove of the third connecting part is located behind the third limiting part.

[0040] In some embodiments of this application:

[0041] The two back plates are referred to as the first back plate and the second back plate, respectively. The fourth connecting part of the first back plate is referred to as the first mating part, and the fourth connecting part of the second back plate is referred to as the second mating part. The first mating part and the second mating part are rotatably connected within a certain angle.

[0042] In some embodiments of this application:

[0043] The first mating part is provided with a socket;

[0044] The second mating part includes a plug plate corresponding to the socket. The plug plate is inserted into the socket and can be flipped within the socket at a certain angle to form a detachable connection between the first mating part and the second mating part.

[0045] When the planes on which the backplate bodies of the first backplate and the second backplate are located are perpendicular to each other, the insert plate can enter and exit the socket.

[0046] In some embodiments of this application:

[0047] The insert plate includes a fourth limiting portion, which is formed by bending a portion of the insert plate;

[0048] When the folding cabinet is in the unfolded state, the back panel bodies of the first back panel and the second back panel are located on the same plane. The fourth limiting part cooperates with the first mating part to maintain the connection state of the insert plate and the socket, while limiting the rotation angle of the insert plate in the socket.

[0049] In some embodiments of this application:

[0050] The first mating part further includes a fifth limiting part, which is formed by bending at least a portion of the first mating part;

[0051] When the folding cabinet is in the unfolded state, the back panel bodies of the first back panel and the second back panel are located on the same plane. The fifth limiting part cooperates with the second mating part to limit the rotation angle of the insert plate in the slot.

[0052] In some embodiments of this application, the folding cabinet further includes:

[0053] The top plate is detachably installed on the top of the door frame, the side plate and the back plate. The edge of the top plate is provided with a first slot and a second slot extending in the left and right direction. The first slot and the second slot are located at the rear end and the front end of the top plate, respectively. The top of the door frame is inserted into the second slot and the top of the back plate is inserted into the first slot.

[0054] In some embodiments of this application, the folding cabinet further includes:

[0055] The base plate is detachably installed at the bottom of the door frame, the side plate, and the back plate;

[0056] Both the first corner and the second corner are provided with slots, and at least a portion of the edge of the base plate is inserted into the slots. At least a portion of the edge of the base plate also overlaps the door frame.

[0057] In some embodiments of this application, the folding cabinet further includes:

[0058] The partition is detachably installed between the top and bottom of the door frame, the side panel, and the back panel, respectively.

[0059] A partition strip is provided on the door frame and located between the top and bottom of the door frame, and at least a portion of the edge of the partition plate overlaps the partition strip;

[0060] Both the first corner and the second corner are provided with assembly grooves, and at least a portion of the edge of the partition is inserted into the assembly groove.

[0061] This invention provides a folding cabinet, which has the following advantages compared with the prior art:

[0062] The folding cabinet of the present invention has a first connecting part, a second connecting part, a third connecting part, and a fifth connecting part formed by bending the door frame, side panel, and back panel. A first shaft passes through the grooves of the first connecting part and the fifth connecting part to form a hinge between the door frame and the side panel. A second shaft passes through the grooves of the second connecting part and the third connecting part to form a hinge between the side panel and the back panel. By using a bending method in conjunction with the structure of the long shaft, the economic cost can be reduced and the difficulty of subsequent assembly can be reduced. Moreover, only the long shaft needs to be prepared separately for use as the first shaft and the second shaft, replacing the hinge of the prior art, simplifying the hinge structure, and reducing economic costs. Attached Figure Description

[0063] Figure 1 This is a structural schematic diagram of the folding cabinet according to an embodiment of the present invention.

[0064] Figure 2 This is a schematic diagram of the door frame structure according to an embodiment of the present invention.

[0065] Figure 3 yes Figure 2 Enlarged diagram of point A in the middle.

[0066] Figure 4 yes Figure 3 Exploded view of the middle side border.

[0067] Figure 5 This is a partial structural schematic diagram of the door frame according to an embodiment of the present invention.

[0068] Figure 6 yes Figure 4 Enlarged diagram of point B in the middle.

[0069] Figure 7 This is a schematic diagram of the side plate structure according to an embodiment of the present invention.

[0070] Figure 8 yes Figure 7 Enlarged diagram of point C in the middle.

[0071] Figure 9 yes Figure 7 Enlarged diagram of point D in the middle.

[0072] Figure 10 yes Figure 7 Enlarged diagram of point E in the middle.

[0073] Figure 11 This is a schematic diagram of the structure of the back plate in an embodiment of the present invention.

[0074] Figure 12 yes Figure 11 Enlarged schematic diagram at point F in the middle.

[0075] Figure 13 This is a schematic diagram of the structure of the first back plate in an embodiment of the present invention.

[0076] Figure 14 yes Figure 13 Enlarged schematic diagram of point G in the middle.

[0077] Figure 15 yes Figure 13 Enlarged schematic diagram of point H in the middle.

[0078] Figure 16 yes Figure 13 Enlarged schematic diagram of point I in the middle.

[0079] Figure 17 This is a schematic diagram of the connection between the door frame and the side panel in an embodiment of the present invention.

[0080] Figure 18 yes Figure 17 Enlarged schematic diagram of point J in the middle.

[0081] Figure 19 This is a schematic diagram of the connection between the side plate and the back plate in an embodiment of the present invention.

[0082] Figure 20 yes Figure 19 A magnified view of point K in the middle.

[0083] Figure 21 This is a schematic diagram of the structure of the second back plate in an embodiment of the present invention.

[0084] Figure 22 yes Figure 21 Enlarged schematic diagram of point L in the middle.

[0085] Figure 23 yes Figure 21 Enlarged schematic diagram of point M in the middle.

[0086] Figure 24 This is a schematic diagram of the folded cabinet in the folded state according to an embodiment of the present invention.

[0087] Figure 25 yes Figure 24 A magnified diagram of point N in the middle.

[0088] Figure 26 yes Figure 24 A schematic diagram of the back side of a folding cabinet in its folded state.

[0089] Figure 27 yes Figure 24 A top view of the folding cabinet in its folded state.

[0090] Figure 28 yes Figure 27 A magnified view of point O in the middle.

[0091] Figure 29 yes Figure 24 A schematic diagram of the back side of the folding cabinet section in its folded state.

[0092] Figure 30 This is a schematic diagram of the folding cabinet transitioning from a folded state to an unfolded state according to an embodiment of the present invention, with the first back panel and the second back panel not connected.

[0093] Figure 31 yes Figure 30 Top view of the structure.

[0094] Figure 32 This is a schematic diagram of the folding cabinet transitioning from a folded state to an unfolded state according to an embodiment of the present invention, with the first back panel and the second back panel connected.

[0095] Figure 33 yes Figure 32 Top view of the structure.

[0096] Figure 34 yes Figure 33 Enlarged schematic diagram of point P in the middle.

[0097] Figure 35 yes Figure 33 Enlarged schematic diagram of point Q in the middle.

[0098] Figure 36 yes Figure 33 Enlarged schematic diagram of point R in the middle.

[0099] Figure 37 This is a schematic diagram of the door frame, side panel, and back panel in an unfolded state according to an embodiment of the present invention.

[0100] Figure 38 yes Figure 37 A schematic diagram of the back side of the middle structure.

[0101] Figure 39 yes Figure 37 Top view of the structure.

[0102] Figure 40yes Figure 39 A magnified view of point S in the middle.

[0103] Figure 41 yes Figure 39 Enlarged schematic diagram of point T in the middle.

[0104] Figure 42 yes Figure 39 Enlarged schematic diagram of point U in the middle.

[0105] Figure 43 This is a schematic diagram of the top plate structure according to an embodiment of the present invention.

[0106] Figure 44 yes Figure 43 A magnified view of point V in the middle.

[0107] Figure 45 yes Figure 43 Enlarged diagram of point W in the middle.

[0108] Figure 46 This is a schematic diagram of the internal structure of the folding cabinet according to an embodiment of the present invention.

[0109] Figure 47 This is a schematic diagram of the base plate structure according to an embodiment of the present invention.

[0110] Figure 48 This is a schematic diagram of the first connecting part and the fifth connecting part in the unfolded state according to an embodiment of the present invention.

[0111] Figure 49 This is a schematic diagram illustrating the transition between the unfolded and folded states of the first and fifth connecting parts in an embodiment of the present invention.

[0112] Figure 50 This is a schematic diagram of the first connecting part and the fifth connecting part in a folded state according to an embodiment of the present invention.

[0113] Figure 51 This is a schematic diagram of the second and third connecting parts in an unfolded state according to an embodiment of the present invention.

[0114] Figure 52 This is a schematic diagram illustrating the transition between the unfolded and folded states of the second and third connecting parts in an embodiment of the present invention.

[0115] Figure 53 This is a schematic diagram of the second and third connecting parts in a folded state according to an embodiment of the present invention.

[0116] Figure 54 This is a schematic diagram of the internal structure of Embodiment 2.

[0117] In the diagram: 100, door frame; 200, side panel; 300, back panel; 400, first axis; 500, second axis; 600, top panel; 700, bottom panel; 800, partition.

[0118] 110. Side border; 120. Divider strip;

[0119] 111. Fifth connecting part; 112. Side frame body; 113. First limiting part; 114. Extension part;

[0120] 210. Side panel body; 220. First connecting part; 230. First corner part;

[0121] 231. Second connecting part; 232. Second limiting part; 233. First bend; 234. Second bend; 235. First transition plate; 236. First slot;

[0122] 310. Back panel body; 320. Second corner portion; 330. Fourth connecting portion; 340. First back panel; 350. Second back panel;

[0123] 321. Third connecting part; 322. Third limiting part; 323. Third bend; 324. Fourth bend; 325. Second transition plate;

[0124] 331. First mating part; 332. Second mating part; 333. Second slot;

[0125] 3311. Insertion port; 3312. Fifth limiting part;

[0126] 3321. Insert plate; 3322. Fourth limiting part;

[0127] 610, First slot; 620, Second slot;

[0128] 710, First gap; 720, Second gap. Detailed Implementation

[0129] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0130] In the description of this invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0131] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0132] Furthermore, in the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0133] Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0134] Example 1

[0135] A preferred embodiment of the present invention provides a folding cabinet, comprising: a door frame 100 and a side panel assembly.

[0136] The door frame 100 includes two vertically arranged and oppositely positioned side frames 110.

[0137] The enclosure assembly is configured in two sets and corresponds to the two side frames 110 respectively. The enclosure assembly includes a side panel 200 and a back panel 300. The side panel 200 includes a side panel body 210 and a first connecting part 220 and a first corner part 230 provided on its horizontal sides. The back panel 300 includes a back panel body 310 and a second corner part 320 and a fourth connecting part 330 provided on its horizontal sides. The first connecting part 220 is hinged to the side frame 110 through a vertically arranged first shaft 400. The first corner part 230 is hinged to the second corner part 320 through a vertically arranged second shaft 500. The fourth connecting parts 330 of the two back panels 300 are detachably connected.

[0138] Please refer to Figure 1In this embodiment, the vertical direction, which is the height direction of the folding cabinet, refers to the up-down direction of the folding cabinet in its unfolded state. Additionally, there are the front-back and left-right directions, which are also present in the unfolded state. The front-back direction is the direction the cabinet opens, and the left-right direction intersects with both the front-back and height directions. In the following description, the vertical, front-back, and left-right directions are used to conveniently describe the positions of various components. For the folded state of the folding cabinet, these three directions are also used for description.

[0139] Since this embodiment is a folding cabinet, the hinges between the side panel 200 and the door frame 100, as well as the hinges between the side panel 200 and the back panel 300, are all for the purpose of realizing the folding function of the folding cabinet and making it convenient for users to install the folding cabinet into an unfolded state.

[0140] Both sets of enclosure assemblies include side panels 200 and back panels 300. In the unfolded state, the two sets of enclosure assemblies and the door frame 100 together form the cabinet. In the folded state, each of the two enclosure assemblies folds down independently.

[0141] The first connecting portion 220 extends from a portion of the edge of the side panel body 210 and is formed by bending and has a groove. The first corner portion 230 includes a second connecting portion 231 formed by bending and has a groove. The second corner portion 320 includes a third connecting portion 321 formed by bending and has a groove. The side frame 110 includes a fifth connecting portion 111 formed by bending and has a groove. The first shaft 400 passes through the grooves of the first connecting portion 220 and the fifth connecting portion 111. The second shaft 500 passes through the grooves of the second connecting portion 231 and the third connecting portion 321.

[0142] In this embodiment, please refer to Figures 17-18 The hinge between the side panel 200 and the door frame 100 essentially allows the side panel 200 and the door frame 100 to rotate around the same axis, which is the working principle of hinges in the prior art. By providing a first connecting part 220 and a fifth connecting part 111 instead of the circular hole of the hinge in the prior art, the first connecting part 220 and the fifth connecting part 111 can rotate on the first axis 400 respectively, thereby realizing the hinge between the side panel 200 and the door frame 100.

[0143] Please refer to Figure 19 and Figure 20 The second connecting part 231 and the third connecting part 321 are similar to the first connecting part 220 and the fifth connecting part 111. They are also circular holes that replace the hinges in the prior art. The second connecting part 231 and the third connecting part 321 can rotate on the second shaft 500 respectively, thereby realizing the hinge between the side plate 200 and the back plate 300.

[0144] When the folding cabinet is in the folded state, the side panel 200, the back panel 300, and the door frame 100 are stacked, with the back panel 300 located between the side panel 200 and the door frame 100; when the folding cabinet is in the unfolded state, the side panel 200 is located between the door frame 100 and the back panel 300, and the side panel 200 and the door frame 100 are approximately perpendicular, as are the side panel 200 and the back panel 300.

[0145] During the transportation and storage of folding cabinets, in order to improve space utilization, the folding cabinets are folded up, that is, in a folded state. Please refer to [the relevant documentation]. Figures 24-26 When folding the cabinet, please refer to... Figures 30-31 Remove the top panel 600 and bottom panel 700 respectively. Rotate the side panels 200 and back panel 300 towards the door frame 100 to fold them. Please refer to [the instructions]. Figures 27-29 The top plate 600 and back plate 300 are then stacked on top of the assembly of the door frame 100, side plate 200, and back plate 300. When assembly is required, rotate the side plate 200 and back plate 300 in opposite directions. Please refer to [reference needed]. Figures 32-38 This causes the door frame 100, side panel 200, and back panel 300 to unfold into a rectangular shape. Please refer to [reference needed]. Figures 39-42 Then install the top plate 600 and the bottom plate 700 respectively, so that the folding cabinet can be unfolded into the unfolded state.

[0146] Roughly perpendicular means that the included angle is between 85° and 95°.

[0147] During the transition between the folded and unfolded states of the folding cabinet, the included angle between the planes of the door frame 100 and the side panel 200 is θ1, and the included angle between the planes of the side panel 200 and the back panel 300 of the same enclosure assembly is θ2, satisfying: θ1≤95° and θ2≤95°.

[0148] In the folding cabinet, whether in the folded state, the unfolded state, or during the transition between the two, the slot orientation of the first connecting part 220 and the slot orientation of the fifth connecting part 111 are always kept in different directions, as are the slot orientations of the second connecting part 231 and the slot orientation of the third connecting part 321.

[0149] Due to the inherent characteristics of the bending process, both the first connecting part 220 and the fifth connecting part 111 have a slot. If these two slots face the same direction, the first shaft 400 will disengage from both the first connecting part 220 and the fifth connecting part 111, causing the hinge between the door frame 100 and the side panel 200 to disengage. To prevent this, the slots of the first connecting part 220 and the fifth connecting part 111 are always oriented differently in the folded, unfolded, and transitional states of the folding cabinet. Specifically, in the folded state, the two slots face different directions; in the unfolded state, the two slots also face different directions; during the transition between the folded and unfolded states, the first connecting part 220 and the fifth connecting part 111 rotate relative to each other around the first shaft 400, and during this rotation, the slots of the first connecting part 220 and the fifth connecting part 111 remain oriented differently.

[0150] With this configuration, whether the folding cabinet is in a folded state, an unfolded state, or in the process of switching between the two, the first connecting part 220 and the fifth connecting part 111 will jointly limit the first shaft 400. While having the function of rotating relative to the first shaft 400, it can also prevent the first shaft 400 from coming off, ensuring the reliability of the hinge between the door frame 100 and the side panel 200.

[0151] Similarly, the second connecting part 231 and the third connecting part 321 each have a slot. Regardless of whether the folding cabinet is in a folded state, an unfolded state, or the process of switching between the two, the slot directions of the second connecting part 231 and the third connecting part 321 are always inconsistent, so that the second connecting part 231 and the third connecting part 321 jointly limit the second shaft 500. While having the function of rotating relative to the second shaft 500, it can also prevent the second shaft 500 from coming out, ensuring the reliability of the hinge between the side panel 200 and the back panel 300.

[0152] In existing technologies, hinges are typically used to connect the door frame 100 and the side panel 200, and the side panel 200 and the back panel 300. For cases where long hinges are used, extending from the top to the bottom of the folding cabinet, these long hinges are expensive. For cases where multiple short hinges are used, they are typically spaced apart along the height of the folding cabinet. During installation, each short hinge must be coaxial, requiring precise positioning regardless of whether it is installed by welding or bolts. This increases the difficulty of assembly and results in higher time and economic costs.

[0153] In this embodiment, the folding cabinet uses an existing sheet metal bending machine in the workshop to continuously press and bend the side panel 200 and back panel 300 to form the first connecting part 220, the second connecting part 231, and the third connecting part 321. Similarly, the fifth connecting part 111 is also formed by bending a sheet metal.

[0154] However, due to the inherent limitations of the sheet metal bending machine, it cannot bend a circular shaft hole. The first connecting part 220, the second connecting part 231, the third connecting part 321, and the fifth connecting part 111 can only be bent into non-closed grooves, namely the slots formed by the first connecting part 220, the second connecting part 231, the third connecting part 321, and the fifth connecting part 111. This hinge structure has a defect: during the folded state, the unfolded state, and the transition between the two, if the slot orientation of the first connecting part 220 and the slot orientation of the fifth connecting part 111 are in the same direction at a certain moment, the first shaft 400 will disengage from the grooves of the first connecting part 220 and the fifth connecting part 111, and the hinge structure of the side plate 200 and the side frame 110 will fail. Similarly, if the slots of the second connecting part 231 and the third connecting part 321 are simultaneously in the same direction, the second shaft 500 will disengage from the grooves of the second connecting part 231 and the third connecting part 321, and the hinge structure of the side plate 200 and the back plate 300 will fail.

[0155] For folding cabinets like this one, the opening and closing degree of the side panel 200 on the door frame 100 is limited. Whether in the folded state, the unfolded state, or during the transition between the two, the rotation angle of the side panel 200 on the door frame 100 is within 0°-95°. Within this rotation angle range, the folded state and the unfolded state are two extreme states, as described above. Figures 48-50 When the first connecting part 220, the fifth connecting part 111, and the first shaft 400 are in these two postures, or during the transition between these two postures, the above-mentioned defects can be avoided. The slots of the first connecting part 220 and the fifth connecting part 111 will always remain in different directions, and the first shaft 400 will not come out, thus ensuring the stability of the hinge structure between the side plate 200 and the side frame 110.

[0156] The hinge structure between the side panel 200 and the back panel 300 is similar. In the folded state, the back panel 300 is located between the side panel 200 and the door frame 100. Therefore, the opening and closing degree of the back panel 300 on the side panel 200 is limited. Whether in the folded state, the unfolded state, or during the transition between the two, the rotation angle of the back panel 300 on the side panel 200 is within 0°-95°. Within this rotation angle range, the folded state and the unfolded state are two extreme states, respectively. Please refer to [reference needed]. Figures 51-53 When the second connecting part 231, the third connecting part 321, and the second shaft 500 are in these two postures, or during the transition between these two postures, the above-mentioned defects can be avoided. The slots of the second connecting part 231 and the third connecting part 321 will always remain in different directions, and the second shaft 500 will not come out, thus ensuring the stability of the hinge structure between the back plate 300 and the side plate 200.

[0157] In this embodiment, the hinge structure formed by bending not only meets the requirements of hinges but also reduces economic costs. Compared to short hinges, the long shafts, such as the first axis 400 and the second axis 500, themselves serve to position the various connecting parts. That is, the first axis 400 positions the first connecting part 220 and the fifth connecting part 111, and the second axis 500 positions the second connecting part 231 and the third connecting part 321, thereby reducing assembly difficulty, simplifying the hinge structure, reducing installation difficulty, and lowering economic costs.

[0158] Since commonly used hinges are manufactured using sheet metal processes, for sheet metal products, the hinge structure can be directly formed on the parts that need to be hinged using sheet metal processes. This reduces the procurement cost of parts and eliminates the complicated parts installation process.

[0159] In this embodiment, the characteristics of sheet metal bending process and hinge structure are fully combined. By bending the sheet metal in fewer steps, a long rotating hinge structure is integrally formed on the edge of the sheet metal part. Then, by connecting the two parts through the through shaft, the effect of connecting the two parts through the long hinge can be achieved. No additional accessory cost is required, and the installation is also simpler.

[0160] In this embodiment, the first connecting portion 220, the second connecting portion 231, the third connecting portion 321, and the fifth connecting portion 111 all form rectangular grooves, which not only meet the hinge requirements but also facilitate manufacturing. In other embodiments, they can be bent into other shapes, as long as the first shaft 400 can form a stable hinge structure with the first connecting portion 220 and the fifth connecting portion 111 respectively, and the second shaft 500 can form a stable hinge structure with the second connecting portion 231 and the third connecting portion 321 respectively. A stable hinge structure means that the first connecting portion 220 and the fifth connecting portion 111 can rotate on the first shaft 400 without the first shaft 400 disengaging from the first connecting portion 220 and the fifth connecting portion 111, while minimizing radial movement of the first shaft 400 within the first connecting portion 220 and the fifth connecting portion 111, and the same applies to the second shaft 500, the second connecting portion 231, and the third connecting portion 321.

[0161] In this configuration, the outer surface of the first shaft 400 is tangent to the inner surfaces of both the first connecting portion 220 and the fifth connecting portion 111. From a cross-sectional perspective, the first shaft 400 is the inscribed circle of both the first connecting portion 220 and the fifth connecting portion 111. The second shaft 500, the second connecting portion 231, and the third connecting portion 321 are also arranged in this tangent configuration.

[0162] In some embodiments, the first connecting portion 220 is disposed on a portion of the edge of the side plate body 210.

[0163] Please refer to Figure 7 and Figure 8 The first connecting part 220 and the side plate body 210 can be configured as a single piece of plate integrally formed. The edge of this plate is bent to form the first connecting part 220 and the side plate body 210.

[0164] Please refer to Figures 2-6 The side frame 110 also includes a side frame body 112 and a first limiting part 113. The first limiting part 113 and the fifth connecting part 111 are disposed behind the side frame body 112. The fifth connecting part 111 is formed by extending and bending a portion of the edge of the first limiting part 113.

[0165] The fifth connecting part 111 and the first limiting part 113 can be configured as a single piece of plate integrally formed, and the first limiting part 113 and the fifth connecting part 111 are formed after the bending process.

[0166] When the folding cabinet is in the unfolded state, part of the edge of the side panel body 210 abuts against the outside of the fifth connecting part 111, and part of the edge of the first limiting part 113 abuts against the outside of the first connecting part 220.

[0167] When the folding cabinet is in the folded state, part of the edge of the side panel body 210 will not abut against the fifth connecting part 111, and part of the edge of the first limiting part 113 will not abut against the first connecting part 220.

[0168] In other words, a first connecting portion 220 is formed on a portion of the edge of the side panel body 210, and another portion of the edge is used to abut against the fifth connecting portion 111. Similarly, a fifth connecting portion 111 is formed on a portion of the edge of the first limiting portion 113, and another portion of the edge of the first limiting portion 113 is used to abut against the first connecting portion 220.

[0169] When the folding cabinet transitions from a folded state to an unfolded state, the first connecting part 220 rotates to change the posture of the first connecting part 220 and the fifth connecting part 111 in cooperation with each other until it is in the unfolded state. The side panel body 210 and the first limiting part 113 simultaneously restrict the first connecting part 220 and the fifth connecting part 111, so that the first connecting part 220 can no longer rotate relative to the fifth connecting part 111, thereby limiting the rotation angle of the side panel 200.

[0170] Please refer to Figure 9 and Figure 10 The first corner portion 230 also includes a second limiting portion 232, and the second connecting portion 231 is connected to the side plate body 210 through the second limiting portion 232. The second connecting portion 231 is formed by extending and bending a portion of the edge of the second limiting portion 232.

[0171] The second connecting part 231 and the second limiting part 232 can be configured as a single piece of plate, with the edge of the plate bent to form the second connecting part 231 and the second limiting part 232.

[0172] Please refer to Figures 13-15 The second corner portion 320 also includes a third limiting portion 322, and a third connecting portion 321 is connected to the back plate body 310 through the third limiting portion 322. The third connecting portion 321 is formed by extending and bending a portion of the edge of the third limiting portion 322.

[0173] The third connecting part 321 and the third limiting part 322 can be configured as a single piece of plate, with the edge of the plate bent to form the third connecting part 321 and the third limiting part 322.

[0174] When the folding cabinet is in the unfolded state, a portion of the edge of the second limiting part 232 abuts against the outside of the third connecting part 321, and a portion of the edge of the third limiting part 322 abuts against the outside of the second connecting part 231.

[0175] When the folding cabinet is in the folded state, part of the edge of the second limiting part 232 will not abut against the third connecting part 321, and part of the edge of the third limiting part 322 will not abut against the second connecting part 231.

[0176] When the folding cabinet transitions from a folded state to an unfolded state, the third connecting part 321 rotates to change the posture of the third connecting part 321 and the second connecting part 231 in cooperation with each other until it is in the unfolded state. The second limiting part 232 and the third limiting part 322 simultaneously restrict the second connecting part 231 and the third connecting part 321, so that the third connecting part 321 can no longer rotate relative to the second connecting part 231, thereby limiting the rotation angle of the back panel 300 on the side panel 200.

[0177] In some embodiments, please refer to Figure 4 The side frame 110 also includes an extension 114 disposed behind the side frame body 112, and the fifth connecting part 111 is connected to the extension 114 through the first limiting part 113.

[0178] The side frame body 112 and the extension 114 can be configured to be integrally formed, but not integrally formed with the fifth connecting part 111 and the first limiting part 113.

[0179] In some embodiments, the side panel body 210, the first connecting portion 220, and the first corner portion 230 are integrally formed; the back panel body 310, the second corner portion 320, and the fourth connecting portion 330 are integrally formed.

[0180] In other words, the side panel body 210, the first connecting part 220, and the first corner part 230 are formed from a single piece of board, and the back panel body 310, the second corner part 320, and the fourth connecting part 330 are also formed from a single piece of board.

[0181] By using a one-piece molding design, during assembly, the door frame 100 and side panel 200 only need to have the first shaft 400 pass through each of the first connecting parts 220 and the fifth connecting part 111 in sequence to complete the assembly and achieve the hinge connection between the door frame 100 and the side panel 200. The hinge connection between the side panel 200 and the back panel 300 is assembled in the same way, by having the second shaft 500 pass through each of the second connecting parts 231 and the third connecting part 321 in sequence to complete the assembly. By using a one-piece molding design, the assembly difficulty can be further reduced, simplifying the hinge structure, reducing installation difficulty, and lowering economic costs.

[0182] Please refer to Figure 2 The door frame 100 is configured as a frame body, which is used to connect the side panel 200, the top panel 600, and the bottom panel 700. In some embodiments, a cabinet door is installed on the frame body.

[0183] In this embodiment, there are multiple fifth connecting portions 111, and these fifth connecting portions 111 are spaced apart vertically. The gap between two adjacent fifth connecting portions 111 can be used to make room for the first connecting portion 220. The fifth connecting portion 111 is bent into a groove. The width of the groove, that is, the front-to-back dimension of the fifth connecting portion 111, and the depth of the groove, that is, the left-to-right dimension, can be adaptively set according to the outer diameter of the first shaft 400. The length of the fifth connecting portion 111, that is, its vertical dimension, can be adaptively set according to the assembly requirements of the specific implementation. Please refer to... Figure 7 The first connecting portion 220 can also be similarly configured. Multiple first connecting portions 220 are spaced apart vertically, and the gap between two adjacent first connecting portions 220 can be used to make room for the fifth connecting portion 111. The width and depth of the groove formed by bending the first connecting portion 220 are also adapted to the outer diameter of the first shaft 400. The length of the first connecting portion 220 is its vertical dimension, which can be adaptively set according to the assembly requirements of the specific implementation.

[0184] Please refer to Figure 7 and Figure 11There are multiple second connecting portions 231 and multiple third connecting portions 321, and the number of each can be different. The multiple second connecting portions 231 are spaced apart vertically, and the gaps between adjacent second connecting portions 231 can be used to make room for the third connecting portions 321. In the unfolded state, the second connecting portions 231 and the third connecting portions 321 are staggered. The width and depth of the groove formed by bending the second connecting portion 231 are adapted to the outer diameter of the second shaft 500. The length of the second connecting portion 231 is its vertical dimension, which can be adaptively set according to the assembly requirements of the specific implementation.

[0185] Similarly, multiple third connecting portions 321 are spaced apart in the vertical direction, and the gap between two adjacent third connecting portions 321 can be used to make room for the second connecting portion 231. The width and depth of the groove formed by bending the third connecting portion 321 are also adapted to the outer diameter of the second shaft 500. The length of the third connecting portion 321 is the vertical dimension of the third connecting portion 321, which can be adapted to the assembly requirements of the specific implementation.

[0186] The first corner portion 230 also includes a first bend 233, a second bend 234, and a first transition plate 235. One end of the first transition plate 235 is connected to the side plate body 210 through the first bend 233, and the other end of the first transition plate 235 is connected to the second limiting portion 232 through the second bend 234. The side plate 200 is bent in the same direction at least twice to form the side plate body 210, the first bend 233, the first transition plate 235, the second bend 234, and the second limiting portion 232.

[0187] Please refer to Figure 9 Since the first corner portion 230 and the side plate body 210 are integrally formed, the first corner portion 230 is formed by bending a single piece of plate at least twice. In this embodiment, it is bent twice, at the first bend angle 233 and the second bend angle 234, respectively. This design further reduces assembly difficulty, simplifies the hinge structure, reduces installation difficulty, and lowers economic costs.

[0188] The second corner portion 320 also includes a third bend 323, a fourth bend 324, and a second transition plate 325. One end of the second transition plate 325 is connected to the back plate body 310 through the third bend 323, and the other end of the second transition plate 325 is connected to the third limiting portion 322 through the fourth bend 324. The back plate 300 is bent at least twice in different directions to form the back plate body 310, the third bend 323, the second transition plate 325, the fourth bend 324, and the third limiting portion 322.

[0189] Please refer to Figure 14The second corner portion 320 and the back panel body 310 are integrally formed, therefore the second corner portion 320 is formed by bending a single piece of board at least twice. In this embodiment, it is bent twice, at the third corner 323 and the fourth corner 324, respectively. This design further reduces assembly difficulty, simplifies the hinge structure, reduces installation difficulty, and lowers economic costs.

[0190] The first fold angle 233 and the second fold angle 234 are formed by bending twice in the same direction, while the third fold angle 323 and the fourth fold angle 324 are formed by bending twice in different directions. The angles of the third fold angle 323 and the fourth fold angle 324 are adapted to the angles of the first fold angle 233 and the second fold angle 234. The second connecting part 231, the third connecting part 321 and the second shaft 500 are concealed inside the folding cabinet by the first transition plate 235.

[0191] This structure allows the second connecting part 231 and the third connecting part 321 to be hidden inside the folding cabinet, and the hinges of the back panel 300 and the side panel 200 are not exposed, which not only ensures the aesthetic appearance of the folding cabinet but also improves its safety.

[0192] In addition, the external seam of the side panel 200 and the back panel 300 is the position where the first corner 230 and the second corner 320 directly contact each other. This not only hides the second connecting part 231 and the third connecting part 321, but also makes it difficult to insert inserts from the external seam, thus improving the security of the folding cabinet.

[0193] The second fold angle 234 is an acute angle, making the outer surface of the first transition plate 235 flush with the outer surface of the back plate body 310.

[0194] The outer surface of the first transition plate 235 is flush with the outer surface of the back panel body 310, which will make the folding cabinet more aesthetically pleasing.

[0195] The first connecting portion 220, the second connecting portion 231, the third connecting portion 321, and the fifth connecting portion 111 each have slots due to the characteristics of the bending process. The first connecting portion 220 and the fifth connecting portion 111 can rotate on the first shaft 400, and the second connecting portion 231 and the third connecting portion 321 can rotate on the second shaft 500. In the above, by limiting the relative rotation angle, the defects of the first shaft 400 dislodging from the slots of the first connecting portion 220 and the fifth connecting portion 111, and the second shaft 500 dislodging from the slots of the second connecting portion 231 and the third connecting portion 321 are avoided.

[0196] In this embodiment, other structures are also provided to limit the relative rotation angle of the side plate 200 on the door frame 100.

[0197] Please refer to Figure 17 and Figure 18The fifth connecting part 111 is located between the front and rear ends of the extension 114. The rearward end of the extension 114 is located on the outside of the side panel body 210 to limit the maximum rotation angle of the side panel 200 on the door frame 100.

[0198] In the unfolded state, when the side panel 200 is rotated into place, the rear end of the extension 114 is located outside the side panel body 210, preventing the side panel 200 from rotating further outward, thereby limiting the maximum rotation angle of the side panel 200 on the door frame 100, and ensuring that the hinge between the side panel 200 and the door frame 100 can avoid the defect of the first shaft 400 coming out of the slots of the first connecting part 220 and the fifth connecting part 111.

[0199] Furthermore, since the fifth connecting part 111 is located between the front and rear ends of the extension 114, the external seam of the folding cabinet at the door frame 100 appears as the edge of the extension 114. The edge of the door frame 100 and the edge of the side panel 200 are offset, making it difficult to insert the insert from the external seam, thus improving the confidentiality of the folding cabinet.

[0200] In this embodiment, other structures are also provided to limit the relative rotation angle of the back plate 300 on the side plate 200.

[0201] When the folding cabinet is in the unfolded state, the second folding angle 234 abuts against the third folding angle 323, or the second folding angle 234 abuts against the second transition plate 325, so as to limit the maximum rotation angle of the back panel 300 on the side panel 200.

[0202] In the unfolded state, when the back plate 300 is rotated into position, the second fold angle 234 abuts against the third fold angle 323 or the second transition plate 325, preventing the back plate 300 from rotating further outward, thereby limiting the maximum rotation angle of the back plate 300 on the side plate 200, and ensuring that the junction of the back plate 300 and the side plate 200 can avoid the defect of the second shaft 500 coming out of the slots of the second connecting part 231 and the third connecting part 321.

[0203] When folded, the slots of the first connecting part 220 and the fifth connecting part 111 are not aligned, and the first shaft 400, the first limiting part, and the side plate body 210 all act as limiting elements. No matter what direction the first connecting part 220 or the fifth connecting part 111 is subjected to, the overall structure of the first shaft 400, the first connecting part 220, and the fifth connecting part 111 can be kept stable, the first shaft 400 will not come out, and the first connecting part 220 and the fifth connecting part 111 will remain connected.

[0204] In the unfolded state, similarly, the slots of the second connecting part 231 and the third connecting part 321 are not oriented in the same direction, and the second shaft 500, the second limiting part 232 and the third limiting part 322 simultaneously play a limiting role. No matter what direction the second connecting part 231 or the third connecting part 321 is subjected to force, it can ensure the overall structural stability of the second shaft 500, the second connecting part 231 and the third connecting part 321, the second shaft 500 will not come out, and the second connecting part 231 and the third connecting part 321 will remain connected.

[0205] When switching between the folded and unfolded states, the first shaft 400 will not come off, and the first connecting part 220 and the fifth connecting part 111 will remain connected; the second shaft 500 will not come off, and the second connecting part 231 and the third connecting part 321 will remain connected.

[0206] When the folding cabinet is in the unfolded state, the slot of the first connecting part 220 faces the rear and is located on the side of the side panel body 210 facing the inside of the folding cabinet. The slot of the fifth connecting part 111 faces the outside of the folding cabinet and is located in front of the first limiting part 113.

[0207] Therefore, in addition to ensuring the overall structural stability of the first shaft 400, the first connecting part 220 and the fifth connecting part 111, the side plate body 210 and the first limiting part 113 can also limit the maximum rotation angle between the first connecting part 220 and the fifth connecting part 111.

[0208] When the folding cabinet is in the folded state, the slot of the first connecting part 220 opens to the right and faces the inside of the folding cabinet. The opening of the first connecting part 220 is located on the front side of the side panel body 210. The slot of the fifth connecting part 111 faces the opposite direction to the slot of the first connecting part 220. The slot of the fifth connecting part 111 is located on the front side of the first limiting part 113.

[0209] Therefore, after transitioning from the folded state to the unfolded state, it can maintain the overall structural stability of the first shaft 400, the first connecting part 220, and the fifth connecting part 111, and also prevent the first connecting part 220 and the fifth connecting part 111 from continuing to rotate relative to each other after being in the unfolded state.

[0210] When the folding cabinet is in the unfolded state, the groove direction of the second connecting part 231 intersects with the front-back direction, and the groove direction of the second connecting part 231 is inclined towards the direction of the back panel 300. The groove of the second connecting part 231 is located on the side of the second limiting part 232 away from the back panel 300. The groove direction of the third connecting part 321 intersects with the front-back direction, and the groove direction of the third connecting part 321 is inclined towards the inside of the folding cabinet. The groove of the third connecting part 321 is located in front of the third limiting part 322.

[0211] When in the unfolded state, the slots of the second connecting part 231 and the third connecting part 321 are not aligned, and the second shaft 500, the second limiting part 232 and the third limiting part 322 all act as limiting parts simultaneously. No matter what direction the second connecting part 231 and the third connecting part 321 are subjected to, the overall structural problems of the second shaft 500, the second connecting part 231 and the third connecting part 321 can be ensured, the second shaft 500 will not come out, and the second connecting part 231 and the third connecting part 321 will remain connected.

[0212] When the folding cabinet is in the folded state, the groove direction of the second connecting part 231 intersects with the left and right direction, and the groove direction of the second connecting part 231 is inclined towards the direction of the back panel 300. The opening of the second connecting part 231 is located behind the third limiting part 322. The groove direction of the third connecting part 321 intersects with the left and right direction, and the groove direction of the third connecting part 321 is inclined towards the direction of the side panel 200. The groove of the third connecting part 321 is located behind the third limiting part 322.

[0213] When in the folded state, the slots of the second connecting part 231 and the third connecting part 321 are not aligned, and the second shaft 500, the second limiting part 232 and the third limiting part 322 all act as limiting parts. No matter what direction the second connecting part 231 or the third connecting part 321 is subjected to, the overall structural problems of the second shaft 500, the second connecting part 231 and the third connecting part 321 can be ensured. The second shaft 500 will not come out, and the second connecting part 231 and the third connecting part 321 will remain connected.

[0214] The same applies when switching between the folded and unfolded states, ensuring the overall structural stability of the second shaft 500, the second connecting part 231, and the third connecting part 321, preventing the second shaft 500 from coming off, and maintaining the connection between the second connecting part 231 and the third connecting part 321.

[0215] In this embodiment, when the folding cabinet is in a folded state, the back panel 300 is located on the side of the side panel 200 facing the door frame 100, that is, the back panel 300 is located between the side panel 200 and the door frame 100.

[0216] Please refer to Figure 24-26 In the folded state, the back panel 300 folds towards the inside of the folding cabinet. When switching from the folded state to the unfolded state, it only needs to be rotated approximately 90° to ensure that the slot directions of the second connecting part 231 and the third connecting part 321 remain inconsistent, and the second shaft 500 will not come out of the second connecting part 231 and the third connecting part 321.

[0217] If the back panel 300 is located on the side of the side panel 200 away from the door frame 100, then when changing from the folded state to the unfolded state, the back panel 300 needs to rotate approximately 270°. When the relative rotation angle is 270°, there will inevitably be a position where the grooves of the second connecting part 231 and the third connecting part 321 are aligned. This makes it impossible to avoid the defect that the second shaft 500 will come out of the grooves of the second connecting part 231 and the third connecting part 321.

[0218] In this embodiment, the two back plates 300 are respectively referred to as the first back plate 340 and the second back plate 350. The fourth connecting part 330 of the first back plate 340 is referred to as the first mating part 331, and the fourth connecting part 330 of the second back plate 350 is referred to as the second mating part 332. The first mating part 331 and the second mating part 332 can be rotatably connected within a certain angle.

[0219] Both the first mating part 331 and the second mating part 332 are formed by bending the edges of the first back plate 340 and the second back plate 350.

[0220] In the unfolded state, the first backplate 340 and the second backplate 350 are connected to each other. Please refer to [reference needed]. Figure 11 and Figure 12 .

[0221] When the cabinet is folded, please refer to... Figure 24 and Figure 25 The first back plate 340 and the second back plate 350 are not connected, but the first back plate 340 and the second back plate 350 are respectively hinged to the two side plates 200.

[0222] Specifically, when folding the cabinet, the top panel (600mm) and bottom panel (700mm) should be removed separately. Please refer to [the instructions]. Figures 30-31 The first back panel 340 and the second back panel 350 are disconnected. The first back panel 340 and the second back panel 350 are rotated to their respective hinged side panels 200 to fold. The two side panels 200 are then rotated to the door frame 100 to fold. The top panel 600 and the side panels 200 are then stacked on the assembly of the door frame 100, the side panels 200, the first back panel 340 and the second back panel 350 to form the folded state of the folding cabinet.

[0223] When assembling a folding cabinet, please refer to... Figures 32-33 Rotate the two side panels 200 and the first back panel 340 and second back panel 350 folded on each side panel 200 in the opposite direction, then rotate the first back panel 340 and second back panel 350 in the opposite direction again, and connect the first back panel 340 and second back panel 350 so that the door frame 100, the two side panels 200, the first back panel 340 and the second back panel 350 unfold to form a rectangular shape. Please refer to [reference needed]. Figures 37-38 Then install the top plate 600 and the bottom plate 700 respectively, so that the folding cabinet can be unfolded into the unfolded state.

[0224] The first mating part 331 is provided with a socket 3311.

[0225] The second mating part 332 includes a plug plate 3321 corresponding to the socket 3311. The plug plate 3321 is inserted into the socket 3311 and can be flipped within the socket 3311 at a certain angle to form a detachable connection between the first mating part 331 and the second mating part 332.

[0226] When the planes on which the backplate bodies 310 of the first backplate 340 and the second backplate 350 are located are perpendicular to each other, the insert plate 3321 can enter and exit the slot 3311.

[0227] Please refer to Figures 13-16 The third connecting portion 321 and the fourth connecting portion 330 of the first back plate 340 are respectively disposed on opposite edges of the first back plate 340.

[0228] Please refer to Figures 21-23 The third connecting portion 321 and the fourth connecting portion 330 of the second back plate 350 are respectively disposed on opposite edges of the second back plate 350.

[0229] When the insert plate 3321 is inserted into the socket 3311, the first back plate 340 and the second back plate 350 are connected to each other. After the insert plate 3321 is removed from the socket 3311, the first back plate 340 and the second back plate 350 are disconnected.

[0230] To facilitate control over the connection and disconnection of the first backplate 340 and the second backplate 350, and to ensure stable connection between the insert plate 3321 and the socket 3311 in the unfolded state, please refer to... Figure 16 as well as Figure 36 The angle at which the socket 3311 is opened is inclined to the plane of the first back plate 340. The plane of the insert plate 3321 is also inclined to the plane of the second back plate 350. When the planes of the first back plate 340 and the second back plate 350 are perpendicular to each other, the socket 3311 is directly opposite the insert plate 3321, and the insert plate 3321 can enter and exit the socket 3311.

[0231] The socket 3311 is also located on the first mating part 331. The insert plate 3321 can flip within the socket 3311 at a certain angle; in this embodiment, this angle is approximately 90°. After the insert plate 3321 is inserted into the socket 3311, the first back plate 340 and the second back plate 350 continue to rotate on their respective hinged side plates 200 until the back plate bodies 310 of the first back plate 340 and the second back plate 350 are on the same plane. During this process, the insertion of the insert plate 3321 and the socket 3311 does not affect the relative movement of the first back plate 340 and the second back plate 350. Furthermore, during this process, the angle at which the insert plate 3321 is inserted into the socket 3311 gradually changes, increasing the friction at the contact point between the socket 3311 and the insert plate 3321, which provides a certain locking effect and reduces the risk of the insert plate 3321 dislodging from the socket 3311.

[0232] The insert plate 3321 includes a fourth limiting part 3322, which is formed by bending a portion of the insert plate 3321. When the folding cabinet is in the unfolded state, the back plate bodies 310 of the first back plate 340 and the second back plate 350 are located on the same plane. The fourth limiting part 3322 cooperates with the first mating part 331 to maintain the connection between the insert plate 3321 and the socket 3311, while limiting the rotation angle of the insert plate 3321 in the socket 3311.

[0233] When the folding cabinet is in the unfolded state, the back panel bodies 310 of the first back panel 340 and the second back panel 350 are located on the same plane. The second limiting part 232 cooperates with the first mating part to maintain the connection between the insert plate 3321 and the socket 3311, while limiting the rotation angle of the insert plate 3321 in the socket 3311.

[0234] The fourth limiting part 3322 is also a bent plate. The bending angle of the fourth limiting part 3322 relative to the insert plate 3321 is approximately 90°. With this setting, when the planes on which the back plate bodies 310 of the first back plate 340 and the second back plate 350 are respectively perpendicular to each other, the fourth limiting part 3322 can be inserted from the insertion port 3311.

[0235] When transitioning from the folded state to the unfolded state, after the fourth limiting part 3322 is inserted into the socket 3311, the first back plate 340 and the second back plate 350 continue to rotate on their respective hinged side plates 200 until the back plate bodies 310 of the first back plate 340 and the second back plate 350 are on the same plane. During this process, the fourth limiting part 3322 gradually forms a hook on the first mating part 331 near the socket 3311, and the unbent part of the insert plate 3321 also gradually moves to the socket 3311. Finally, in the unfolded state, the unbent part of the insert plate 3321 is inserted into the socket 3311, and the fourth limiting part 3322 is completely hooked on the first mating part 331 near the socket 3311. The setting of the fourth limiting part 3322 can prevent the insert plate 3321 from coming out of the socket 3311, thereby improving the connection stability between the first back plate 340 and the second back plate 350.

[0236] Conversely, when transitioning from the unfolded state to the folded state, the back plate bodies 310 of the first back plate 340 and the second back plate 350 are both on the same plane. When they are rotated to an angle of approximately 90°, the unbent part of the insert plate 3321 gradually moves away from the insertion port 3311, and the fourth limiting part 3322 moves to the insertion port 3311. After that, the fourth limiting part disengages from the insertion port 3311, thus releasing the connection between the first back plate 340 and the second back plate 350.

[0237] The first mating part 331 also includes a fifth limiting part 3312, which is formed by bending at least a portion of the first mating part 331.

[0238] When the folding cabinet is in the unfolded state, the back panel bodies 310 of the first back panel 340 and the second back panel 350 are located on the same plane. The fifth limiting part 3312 cooperates with the second mating part 332 to limit the rotation angle of the insert plate 3321 in the insertion slot 3311.

[0239] Please refer to Figure 16 The fifth limiting part 3312 is also plate-shaped and is formed by bending the first mating part 331. The bending angle of the fifth limiting part is approximately 90°.

[0240] The fifth limiting part 3312 is similar in design to the fourth limiting part 3322. Specifically, when transitioning from the folded state to the unfolded state, after the fourth limiting part 3322 is inserted into the slot 3311, the first back plate 340 and the second back plate 350 continue to rotate on their respective hinged side plates 200 until the back plate bodies 310 of the first back plate 340 and the second back plate 350 are both on the same plane. During this process, the fourth limiting part 3322 gradually hooks onto the first mating part 331 near the slot 3311, and the fifth limiting part 3312 gradually fits onto the second mating part 332. The fifth limiting part 3312 and the fourth limiting part 3322 together restrict the rotation angle of the first back plate 340 and the second back plate 350. The critical state is when the back plate bodies 310 of the first back plate 340 and the second back plate 350 are on the same plane. This design assists in unfolding the folding cabinet and reduces the assembly difficulty of the folding cabinet.

[0241] When the included angle between the planes containing the backplate bodies 310 of the first backplate 340 and the second backplate 350 is approximately 90°, the fifth limiting part 3312 will not affect the insertion and disengagement of the insert plate 3321 and the socket 3311. During relative rotation of the first backplate 340 and the second backplate 350, the fifth limiting part 3312 will not interfere with the second mating part 332, and will not affect the relative rotation of the first backplate 340 and the second backplate 350.

[0242] In this embodiment, please refer to Figures 43-45 The folding cabinet also includes a top plate 600, which is detachably installed on the top of the door frame 100, side plate 200 and back plate 300. The edge of the top plate 600 is provided with a first slot 610 and a second slot 620 extending in the left and right direction of the folding cabinet. The first slot 610 and the second slot 620 are located at the rear end and front end of the top plate 600, respectively. The top of the door frame 100 is inserted into the second slot 620 and the top of the back plate 300 is inserted into the first slot 610.

[0243] Please refer to Figures 43-45The top panel 600 has a liner that inserts into the folding cabinet. The liner has a downward-opening first slot 610 and a forward-opening second slot 620. The tops of the first back panel 340 and the second back panel 350 are inserted into the first slot 610. Connecting the top panel 600 ensures that the first back panel 340 and the second back panel 350 are on the same plane, making the unfolded folding cabinet more secure. During installation, the top of the door frame 100 is first inserted into the second slot 620, the liner of the top panel 600 extends into the folding cabinet, and then the first back panel 340 and the second back panel 350 are inserted into the first slot 610. The door frame 100 and the back panel 300 will then lock the top panel 600 in place, completing the installation. To remove the top panel 600, first disconnect the first slot 610 from the first back panel 340 and the second back panel 350, then disconnect the second slot 620 from the door frame 100, and finally remove the top panel 600 from the folding cabinet.

[0244] In this embodiment, the folding cabinet also includes a first locking member, which is disposed on the top plate 600 and is used to maintain the connection between the top plate 600 and the back plate 300.

[0245] In this embodiment, the folding cabinet further includes: a base plate 700, which is detachably installed on the bottom of the door frame 100, the side panel 200 and the back panel 300; a slot is provided on the first corner portion 230 and the second corner portion 320, and at least a portion of the edge of the base plate 700 is inserted into the slot, and at least a portion of the edge of the base plate 700 overlaps the door frame 100.

[0246] Please refer to Figure 46 and Figure 47 The edge of the 700 base plate is secured in the slot. Please refer to [the relevant documentation]. Figure 10 , Figure 15 and Figure 23 A slot is provided on the second corner portion 320 of the first corner portion 230, the first back panel 340, and the second back panel 350. The slot on the first corner portion 230 is designated as the first slot 236, and the slot on the second corner portion 320 is designated as the second slot 333. Since the first corner portion 230 protrudes into the interior of the folding cabinet, a slot is provided on the protruding part, and the second corner portion 320 is also designed in the same way.

[0247] In addition, the base plate 700 is provided with a first notch 710 and a second notch 720. The first notch 710 is used to avoid the bending structure at the hinge of the door frame 100 and the side plate 200, and the second notch 720 is used to avoid the fourth connecting part 330 at the connection of the first back plate 340 and the second back plate 350.

[0248] In this embodiment, the folding cabinet also includes a second locking member, which is disposed on the base plate 700 and is used to maintain the connection between the base plate 700 and the back plate 300.

[0249] In this embodiment, the folding cabinet also includes a third locking component, which is used to stabilize the connection between the base plate 700 and the door frame 100.

[0250] Example 2

[0251] The difference between Embodiment 2 and Embodiment 1 is that the folding cabinet also includes a partition 800 and a dividing strip 120. Please refer to [link / reference]. Figure 54 .

[0252] The partition 800 can be detachably installed between the top and bottom of the door frame 100, the side panel 200 and the back panel 300 respectively.

[0253] The partition strip 120 is disposed on the door frame 100 and is located between the top and bottom of the door frame 100, and at least a portion of the edge of the partition 800 overlaps the partition strip 120.

[0254] Both the first corner portion 230 and the second corner portion 320 are provided with assembly grooves, and at least a portion of the edge of the partition plate 800 is inserted into the assembly groove.

[0255] For cases where the folding cabinet is relatively tall, partitions can be installed inside the folding cabinet to divide the space inside.

[0256] The divider 120 is installed on the door frame 100, and the divider 120 allows the space divided by the partition 800 to be fitted with a cabinet door. The divider 120 also serves to support the partition 800.

[0257] The structure of the partition 800 is the same as that of the base plate 700. Similarly, the assembly groove has the same shape and function as the aforementioned slot, only the location of the groove is different. The connection structure between the partition 800 and the back plate 300 and the side plate 200 is the same as that between the base plate 700 and the back plate 300 and the side plate 200.

[0258] Similarly, a second locking element is also provided on the partition 800 to maintain the connection between the partition 800 and the back plate 300. A third locking element is also provided on the partition 800 to maintain the connection between the partition 800 and the partition strip 120.

[0259] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A folding cabinet, characterized in that, include: A door frame, comprising two vertically arranged and oppositely positioned side frames; The enclosure assembly consists of two sets, each corresponding to one of the two side frames. The enclosure assembly includes a side panel and a back panel. The side panel includes a side panel body and a first connecting portion and a first corner portion located on its lateral sides. The back panel includes a back panel body and a second corner portion and a fourth connecting portion located on its lateral sides. The first connecting portion is hinged to the side frame via a vertically arranged first axis, and the first corner portion is hinged to the second corner portion via a vertically arranged second axis. The fourth connecting portions of the two back panels are detachably connected. Wherein, the first connecting portion extends from a part of the edge of the side plate body and is bent to form a groove, the first corner portion includes a second connecting portion bent to form a groove, the second corner portion includes a third connecting portion bent to form a groove, the side frame includes a fifth connecting portion bent to form a groove, the first shaft passes through the grooves of the first connecting portion and the fifth connecting portion, and the second shaft passes through the grooves of the second connecting portion and the third connecting portion; When the folding cabinet is in the folded state, the side panel, the back panel, and the door frame are stacked, with the back panel located between the side panel and the door frame; When the folding cabinet is in the unfolded state, the side panel is located between the door frame and the back panel, and the side panel is approximately perpendicular to the door frame and the back panel. In the folding cabinet, during the folding state, unfolding state, and the transition between the two, the slot orientation of the first connecting part and the slot orientation of the fifth connecting part are always kept in different directions, and the slot orientation of the second connecting part and the slot orientation of the third connecting part are also always kept in different directions. The two back plates are referred to as the first back plate and the second back plate, respectively. The fourth connecting part of the first back plate is referred to as the first mating part, and the fourth connecting part of the second back plate is referred to as the second mating part. The first mating part and the second mating part are rotatably connected within a certain angle. The first mating part is provided with a socket; the second mating part includes a plug plate corresponding to the socket, the plug plate is inserted into the socket and can be rotated within the socket at a certain angle to form a detachable connection between the first mating part and the second mating part; when the planes on which the back plate bodies of the first back plate and the second back plate are respectively perpendicular to each other, the plug plate can enter and exit the socket; when the back plate bodies of the first back plate and the second back plate are both on the same plane, the plug plate is locked to the socket.

2. The folding cabinet according to claim 1, characterized in that: The first connecting portion is disposed on a portion of the edge of the side plate body; The side frame also includes a side frame body and a first limiting part. The first limiting part and the fifth connecting part are disposed behind the side frame body. The fifth connecting part is formed by extending and bending a portion of the edge of the first limiting part. The first corner portion also includes a second limiting portion, and the second connecting portion is connected to the side plate body through the second limiting portion. The second connecting portion is formed by extending and bending a portion of the edge of the second limiting portion. The second corner portion also includes a third limiting portion, and the third connecting portion is connected to the back plate body through the third limiting portion. The third connecting portion is formed by extending and bending a portion of the edge of the third limiting portion. When the folding cabinet is in the unfolded state, a portion of the edge of the side panel body abuts against the outside of the fifth connecting part, a portion of the edge of the first limiting part abuts against the outside of the first connecting part, a portion of the edge of the second limiting part abuts against the outside of the third connecting part, and a portion of the edge of the third limiting part abuts against the outside of the second connecting part.

3. The folding cabinet according to claim 2, characterized in that: The side frame also includes an extension disposed behind the side frame body, and the fifth connecting part is connected to the extension through the first limiting part.

4. The folding cabinet according to claim 2, characterized in that: The side panel body, the first connecting part, and the first corner part are integrally formed; The back panel body, the second corner portion, and the fourth connecting portion are integrally formed.

5. The folding cabinet according to claim 4, characterized in that: The first corner portion further includes a first bend, a second bend, and a first transition plate. One end of the first transition plate is connected to the side plate body through the first bend, and the other end of the first transition plate is connected to the second limiting portion through the second bend. The side plate is bent in the same direction at least twice to form the side plate body, the first bend, the first transition plate, the second bend, and the second limiting portion. The second corner portion further includes a third bend, a fourth bend, and a second transition plate. One end of the second transition plate is connected to the back plate body through the third bend, and the other end of the second transition plate is connected to the third limiting portion through the fourth bend. The back plate is bent at least twice in different directions to form the back plate body, the third bend, the second transition plate, the fourth bend, and the third limiting portion. The second connecting part, the third connecting part, and the second shaft are concealed inside the folding cabinet by the first transition plate.

6. The folding cabinet according to claim 5, characterized in that: The second fold angle is an acute angle, so that the outer surface of the first transition plate is flush with the outer surface of the back plate body.

7. The folding cabinet according to claim 3, characterized in that: The fifth connecting part is located between the front and rear ends of the extension, and the rearward end of the extension is located on the outside of the side panel body to limit the maximum rotation angle of the side panel on the door frame.

8. The folding cabinet according to claim 6, characterized in that: When the folding cabinet is in the unfolded state, the second folding angle abuts against the third folding angle, or the second folding angle abuts against the second transition plate, so as to limit the maximum rotation angle of the back panel on the side panel.

9. The folding cabinet according to claim 2, characterized in that: When the folding cabinet is in the unfolded state, the slot of the first connecting part faces the rear and is located on the side of the side panel body facing the inside of the folding cabinet. The slot of the fifth connecting part faces the outside of the folding cabinet and is located in front of the first limiting part.

10. The folding cabinet according to claim 2, characterized in that: When the folding cabinet is in a folded state, the slot of the first connecting part opens to the right and faces the inside of the folding cabinet. The opening of the first connecting part is located on the front side of the side panel body. The slot of the fifth connecting part faces the opposite direction to the slot of the first connecting part. The slot of the fifth connecting part is located on the front side of the first limiting part.

11. The folding cabinet according to claim 2, characterized in that: When the folding cabinet is in the unfolded state, the groove direction of the second connecting part intersects with the front-back direction, and the groove direction of the second connecting part is inclined towards the direction of the back panel. The groove of the second connecting part is located on the side of the second limiting part away from the back panel. The groove direction of the third connecting part intersects with the front-back direction, and the groove direction of the third connecting part is inclined towards the inside of the folding cabinet. The groove of the third connecting part is located on the front side of the third limiting part.

12. The folding cabinet according to claim 2, characterized in that: When the folding cabinet is in a folded state, the groove direction of the second connecting part intersects with the left and right directions, and the groove direction of the second connecting part is inclined towards the direction of the back panel. The opening of the second connecting part is located behind the third limiting part. The groove direction of the third connecting part intersects with the left and right directions, and the groove direction of the third connecting part is inclined towards the direction of the side panel. The groove of the third connecting part is located behind the third limiting part.

13. The folding cabinet according to claim 1, characterized in that: The insert plate includes a fourth limiting portion, which is formed by bending a portion of the insert plate; When the folding cabinet is in the unfolded state, the back panel bodies of the first back panel and the second back panel are located on the same plane. The fourth limiting part cooperates with the first mating part to maintain the connection state of the insert plate and the socket, while limiting the rotation angle of the insert plate in the socket.

14. The folding cabinet according to claim 1, characterized in that: The first mating part further includes a fifth limiting part, which is formed by bending at least a portion of the first mating part; When the folding cabinet is in the unfolded state, the back panel bodies of the first back panel and the second back panel are located on the same plane. The fifth limiting part cooperates with the second mating part to limit the rotation angle of the insert plate in the slot.

15. The folding cabinet according to claim 1, characterized in that, Also includes: The top plate is detachably installed on the top of the door frame, the side plate and the back plate. The edge of the top plate is provided with a first slot and a second slot extending in the left and right direction. The first slot and the second slot are located at the rear end and the front end of the top plate, respectively. The top of the door frame is inserted into the second slot and the top of the back plate is inserted into the first slot.

16. The folding cabinet according to claim 1, characterized in that, Also includes: The base plate is detachably installed at the bottom of the door frame, the side plate, and the back plate; Both the first corner and the second corner are provided with slots, and at least a portion of the edge of the base plate is inserted into the slots. At least a portion of the edge of the base plate also overlaps the door frame.

17. The folding cabinet according to claim 1, characterized in that, Also includes: The partition is detachably installed between the top and bottom of the door frame, the side panel, and the back panel, respectively. A partition strip is provided on the door frame and located between the top and bottom of the door frame, and at least a portion of the edge of the partition plate overlaps the partition strip; Both the first corner and the second corner are provided with assembly grooves, and at least a portion of the edge of the partition is inserted into the assembly groove.

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