An assembly cabinet

Abstract

This utility model discloses an assembly cabinet, including a front frame, two side panels, a rear panel, and a front door assembled to the front frame via a door hinge. The front frame is integrally formed into a closed frame, and at least one assembly frame is provided within the closed frame. The left and right sides and the top of the rear panel are bent backward away from the front frame, forming a rear panel bending groove. The two ends of the rear panel bending groove on the upper side are hollowed out, forming a clearance groove. The sides of the side panels are bent inward around all four sides, forming side panel bending grooves. The side panel bending groove at the bottom of the side panel and the front and rear ends of the side panel form clearance gaps for the insertion of the rear panel and the front frame. The front frame is integrally formed or welded from several hollow structures, and the cross-section of each hollow structure is a closed cavity. The closed frame type front frame selected in this utility model improves the overall robustness.

Description

Technical Field

[0001] This utility model relates to the technical field of various cabinet structures, and in particular to an assembled cabinet. Background Technology

[0002] In the current technology, the sides and back panels of cabinets mostly require welding to achieve the set strength. Welding is a complex operation, which is costly and affects the use of the cabinets, making the assembly process complicated. Although some existing cabinets can be disassembled, their front frames are mostly assembled rather than formed as a single closed frame. As a result, the front frames are not stable or may wobble during use. Utility Model Content

[0003] The purpose of this utility model is to provide an assembly cabinet that facilitates assembly.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution.

[0005] An assembly cabinet includes a front frame, two side panels, a rear panel, and a front door assembled to the front frame via a door hinge. The front frame is integrally formed into a closed frame, and at least one assembly frame is provided within the closed frame.

[0006] The front frame forms a closed frame, and at least one assembly frame is provided inside the closed frame. The left and right sides and the top of the rear plate are bent backward away from the front frame to form a rear plate bending groove. The two ends of the rear plate bending groove located on the upper side are hollowed out to form a clearance groove.

[0007] The sides of the side panel are all bent inward to form a side panel bending groove. The side panel bending groove at the bottom of the side panel and the front and rear ends of the side panel form a clearance gap for the insertion of the rear panel and the front frame.

[0008] The front frame is integrally formed or welded from several hollow structures, and the cross-section of each hollow structure is a closed cavity in a closed state.

[0009] Furthermore, the horizontal back plate bending groove is formed into an L-shaped groove by bending the plate, and the vertical back plate bending groove is formed into a U-shaped groove by bending the plate at least twice.

[0010] Furthermore, the U-shaped groove is located within the side plate bending groove in the height direction of the side plate, and the side plate bending groove at the top of the side plate covers the clearance grooves at both ends of the L-shaped groove.

[0011] Furthermore, the rear plate away from the front frame and the inner wall of the side plate are provided with reinforcing ribs, and there are at least two reinforcing ribs.

[0012] Furthermore, the reinforcing ribs on the inner wall of the side plate are bent or welded U-shaped grooves, and the grooves of the reinforcing ribs are provided with a number of adjustment holes along the height direction and / or the horizontal direction.

[0013] Furthermore, the top of the side plate is bent to form an L-shaped side plate bending groove, which overlaps with the rear plate bending groove on the upper side of the rear plate, so that the side plate and the rear plate are interference fit.

[0014] Furthermore, the side panel bending groove located in the height direction and near the front frame is a U-shaped groove, and the side of the U-shaped groove parallel to the side panel is recessed at least at the top, middle and bottom to form a clearance space.

[0015] Furthermore, the side plate bending groove located in the height direction and near the rear plate is bent three times to form a first cavity that matches the relief groove.

[0016] Furthermore, the rear plate, after being inserted into the side plate, forms a second cavity, and also includes a rear lower frame that is inserted into the two second cavities at both ends, and the rear lower frame inserted into the second cavity is fixedly connected to the second cavity with screws.

[0017] Furthermore, it also includes a top plate and a bottom plate, which are bent upwards and downwards respectively to form a first bending cavity and a second bending cavity, and the two ends of the front frame and the side plate respectively abut against the first bending cavity and the second bending cavity.

[0018] Furthermore, the outer circumference of the front door is bent inward in an arc-shaped depression, and the curvature of the arc-shaped depression ranges from 15° to 45°.

[0019] A bookshelf was also disclosed, comprising an assembly cabinet as described in any of the above, and several uprights connected to the side panel by screws;

[0020] Each of the columns has several positioning holes along the height direction, and the positioning holes on different columns correspond one-to-one along the height direction.

[0021] The beneficial effects of this utility model are as follows:

[0022] This utility model uses a fully enclosed frame, which requires no assembly. It mainly uses the reserved bending grooves on the side plates and the back plate for insertion splicing, which makes the installation simple. It can be directly inserted and then reinforced.

[0023] This utility model uses a closed front frame, which eliminates the need for assembly, thereby reducing the overall cost. At the same time, the resulting modular cabinet has higher stability and can be used in various types of steel cabinets. Compared with semi-closed or open frames in the industry, the structure is simpler.

[0024] In this invention, the use of bending grooves reduces reliance on welding technology and improves overall assembly efficiency. Attached Figure Description

[0025] Figure 1 Exploded view of an assembly cabinet provided by this utility model

[0026] Figure 2 A structural schematic diagram of an assembly cabinet provided by this utility model;

[0027] Figure 3 A perspective view of the rear plate provided for this utility model;

[0028] Figure 4 A cross-sectional view of the rear plate provided by this utility model;

[0029] Figure 5 A top view of the rear plate provided by this utility model;

[0030] Figure 6 A schematic diagram of the side plate provided by this utility model;

[0031] Figure 7 Assembly diagram of the rear plate and side plate provided for this utility model;

[0032] Figure 8 An assembly diagram of the rear lower frame provided by this utility model;

[0033] Figure 9 Assembly drawing of the center bumper and front frame provided for this utility model;

[0034] Figure 10 Assembly drawings of the front frame, side panels, and rear panel provided for this utility model;

[0035] Figure 11 Assembly drawing of the top plate and waist plate provided for this utility model;

[0036] Figure 12 A schematic diagram of the assembled top plate and waist plate provided for this utility model;

[0037] Figure 13 Assembly drawing of the grid plate provided for this utility model;

[0038] Figure 14 Assembly drawing of the lower door provided for this utility model;

[0039] Figure 15 Assembly drawings provided for on-site installation of this utility model;

[0040] Figure 16 Assembly drawing of the assembly cabinet provided by this utility model at the wall;

[0041] Figure 17 A schematic diagram of the structure of a front door provided by this utility model;

[0042] Figure 18 An assembly drawing of the front door as an integrated door provided for this utility model;

[0043] Figure 19 A cross-sectional view of the front door provided for this utility model;

[0044] Figure 20 A cross-sectional view of the front frame provided by this utility model;

[0045] Figure 21 A cross-sectional view of the pipe constituting the front frame provided by this utility model;

[0046] In the picture:

[0047] 100. Front frame; 110. Enclosed cavity; 200. Side panel; 210. Top groove of side panel; 220. Front bending groove of side panel; 221. Clearance space; 230. Cavity; 240. Clearance gap; 300. Rear panel; 310. Clearance groove; 320. Horizontal groove of rear panel; 330. Vertical groove of rear panel; 340. Reinforcing rib; 350. Center door; 400. Front door; 410. Upper door; 420. Lower door; 430. Arc-shaped recess; 500. Lower rear frame; 600. Waist and bottom plate; 700. Top plate; 710. Pressure groove. Detailed Implementation

[0048] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings. However, it should be noted that these embodiments are not intended to limit the present invention. Equivalent transformations or substitutions in function, method, or structure made by those skilled in the art based on these embodiments are all within the protection scope of the present invention.

[0049] See attached document Figure 1-6As shown, an assembly cabinet in this embodiment mainly includes a front frame 100, two side panels 200, a rear panel 300, and a front door 400 assembled to the front frame 100 via a door hinge. In the prior art, most side structures are assembled using welding technology, resulting in high assembly costs and complex assembly processes. This embodiment improves the structure by bending the left and right sides and the top of the rear panel 300 backward away from the front frame to form a rear panel bending groove. The two ends of the rear panel bending groove on the upper side are hollowed out to form a clearance groove 310. The bending on each side prepares the space for subsequent assembly. The multi-layer design increases thickness, providing a foundation for assembly, and the interlocking of grooves simplifies assembly. In this configuration, the back panel 300 and its rearward-bending groove are fitted within the side panel 200. Along the front-to-back direction, the rear side of the back panel 300 is entirely within the clamping cavity formed by the two side panels 200. Therefore, during contact with the wall, the back panel does not directly contact the wall. However, the innermost side panel, i.e., the side panel bending groove in the height direction, and the rear panel bending groove in the height direction of the assembled back panel are in close contact with the wall. This arrangement ensures the back panel is flat within the clamping cavity, resulting in a more aesthetically pleasing appearance. Since the side panel presses against the back panel, it also presses against the clearance groove 310 reserved after bending away from the front frame, resulting in a flat upper surface structure for the assembled cabinet.

[0050] Regarding the front frame, compared to the combined or welded frames in the prior art, this embodiment is an integrally formed closed frame, and there is at least one assembly frame inside the closed frame. The closed frame allows the entire front frame to be produced directly as a single unit without assembly or splicing. The structure is simple, subsequent processes are optimized, and manual assembly costs are reduced, achieving the effects of saving materials, simplifying processes, and energy conservation and environmental protection.

[0051] In this embodiment, another key aspect of the front frame 100 is that it is integrally formed or welded from several hollow structures, each of which has a closed cavity 110 in its cross-section. For example, if the front frame 100 is a square structure, it is formed by welding or integrally forming four round or square tubes in sequence, with each tube having a circular or square cross-section that is a closed cavity, and there are no openings at the cross-section.

[0052] Regarding the improvement of the side plate 200, in this embodiment, the sides of the side plate 200 are all bent inward to form a side plate bending groove. During assembly, the rear plate 300 is inserted into the side plate 200 along the side plate bending groove in the height direction of the side plate 200 to complete the initial assembly. Then, the clearance groove 310 is interference-fitted with the side plate bending groove located on the upper side to ensure better assembly.

[0053] To facilitate direct insertion and assembly of the front frame and rear panel, the side panel bending groove at the bottom of the side panel 200 and both the front and rear ends of the side panel form clearance gaps 240 for insertion of the rear panel and front frame. Subsequently, the rear panel and front frame can be inserted into the entire side of the side panel from bottom to top through the clearance gaps to complete the interference fit. In this embodiment, after the front frame, rear panel, and side panel are assembled, a flat surface is formed on the outer side, and the insertion assembly between the various bending grooves inside results in a flat inner surface. Furthermore, due to the setting of the bending grooves, a multi-layer assembly is formed at the internal assembly points, resulting in a firm assembly. Subsequent addition of screws, etc., forms a relatively robust assembly.

[0054] In this embodiment, the height direction specifically refers to the height direction of the assembled cabinet, the horizontal direction of the side panel specifically refers to the front-to-back thickness direction of the assembled cabinet, and the horizontal direction of the back panel refers to the left-to-right width direction of the assembled cabinet.

[0055] In this embodiment, the specific bending of the rear plate is described as follows:

[0056] See attached document Figure 3-5 It can be seen that the bending on different sides of the back plate is different. For example, in the horizontal direction, the top back plate 300 is bent directly once to form an L-shaped groove. The L-shaped groove is the horizontal groove 320 of the back plate, which is used for horizontal assembly. The bending groove of the back plate in the vertical direction is formed by bending at least twice to form a U-shaped groove, which in turn forms the vertical groove 330 of the back plate.

[0057] In the specific assembly, the U-shaped groove in the height direction of the back panel 300 is located in the side panel bending groove in the height direction of the side panel 200, and the side panel bending groove at the top of the side panel 200 covers the clearance grooves 310 at both ends of the L-shaped groove, thereby making the cabinet surfaces flat.

[0058] Furthermore, for the two rear plate vertical grooves 330, which are set parallel to the side plate bending grooves in the height direction, the thickness of the side becomes several layers. Then, along the thickness direction of the side plate 200, the bottom of the U-shaped groove is connected to the side plate 200 by screws. That is, the grooves are assembled first, and then the grooves are nested and fixed with screws. During the nesting of the grooves, downward pressure is generated at the contact points, which increases the assembly strength and ensures the firmness of the assembly. Several screws can be set along the height direction to achieve assembly positioning.

[0059] In this embodiment, since the assembled cabinet needs to bear loads and withstand forces, its strength needs to be increased. Therefore, a reinforcing rib 340 is formed on the back panel 300 away from the front frame 100, and reinforcing ribs 340 are also provided on the inner wall of the side panel. There are at least two reinforcing ribs 340. In this embodiment, the reinforcing ribs 340 can be in the vertical direction, the horizontal direction, or an inclined direction, or a combination of multiple directions.

[0060] Compared to direct protrusions, to facilitate structural assembly, the reinforcing ribs 340 on the inner wall of the side panel are bent or welded into U-shaped grooves. These grooves have several adjustment holes along the height and / or horizontal direction, allowing for subsequent adjustments to the installation of partitions, such as along the vertical or horizontal directions. Furthermore, by assembling with different adjustment holes, partitions of different sizes can be installed within the cabinet. The reinforcing ribs also allow for some deformation between the ribs and the rear half, providing cushioning against significant impacts. The extended design further helps to disperse force and increase strength.

[0061] In this embodiment, the two side plates have identical structures. The bending of the side plates is described below:

[0062] See attached document Figure 6-7 As can be seen, in this embodiment, the side plate is bent in all four directions. Specifically, the top is bent only once in the horizontal direction to form an L-shaped side plate bending groove, which in turn forms the side plate top groove 210. When the rear plate and the side plate are assembled, the space formed by the clearance groove 310 can be fully utilized to fill the space with the side plate top groove 210. That is, the L-shaped side plate bending groove (i.e., the side plate top groove 210) overlaps with the rear plate bending groove (i.e., the rear plate horizontal groove) on the upper side of the rear plate, so that the side plate and the rear plate are interference fit, which facilitates subsequent assembly, etc.

[0063] In this embodiment, the bends on the front and rear sides of each side panel are different. Specifically, the side panel bending groove located in the height direction and near the front frame 100 is a U-shaped groove (i.e., the front bending groove 220 of the side panel). Since it needs to be assembled with the front frame later, the top of the side of the U-shaped groove (i.e., the front bending groove 220 of the side panel) parallel to the side panel 200 is recessed to form a clearance space 221 for the front frame 100. The front frame can be directly matched through the clearance space during subsequent assembly.

[0064] To facilitate the subsequent installation of the front frame and the inner side door, in this embodiment, the side panel can be recessed inward at the midpoint of its height along the bending groove, forming a slot for assembling the subsequent waist base plate or other panels. Specifically, for the U-shaped groove in the side panel bending groove, the side parallel to the side panel has recesses at least at the top, middle, and bottom to create clearance space; this can be considered as a partial recess on the side of the groove creating clearance space.

[0065] Regarding the rear side of the side panel 200, specifically in the height direction and near the rear panel 300, the side panel bending groove is bent three times to form a first cavity 230 that matches the relief groove 310. After assembly, the first cavity 230 is located below the relief groove 230, forming a reinforcing structure at the assembly point of the rear panel and the side panel to increase strength.

[0066] To ensure the assembly of the rear panel and side panels at the bottom, a rear lower frame 500 is also included at the bottom of the rear panel 300. The rear panel 300 is first inserted into the side of the side panel 200 to form a second cavity. At this time, it is double-layered. Then the rear lower frame is inserted into the second cavity. At this time, the rear panel should be relatively short and the bottom and side panels are not flat. The height is supplemented by the rear lower frame to achieve the flatness of the structure.

[0067] The side panel 200 has a side panel bending groove at both ends with a clearance 240 that matches the bottom of the rear lower frame 300. After assembly, the rear lower frame 500 is fixed to the rear panel 300 with screws. The clearance 240 is formed because the two ends of the side panel bending groove at the bottom are not connected to the height direction, so the rear lower frame can be directly locked here to form a flat mating surface, which is more aesthetically pleasing and durable.

[0068] See attached document Figure 19 As shown, to ensure the strength of the front door 400, in this embodiment, the outer circumference of the front door is bent inward to form an arc-shaped recess 430, with the arc angle ranging from 15° to 45°. For example, when the assembled front door 400 is square, each of the four sides of the square is bent or recessed inward to form an arc-shaped recess, creating an arc-shaped transition between the front door and the front frame. Alternatively, in this embodiment, the side of the front door can be bent to form a closed cavity, which is then connected to the arc-shaped recess to create a better transition.

[0069] Furthermore, the front door 400 includes a front door body, and the side of the front door body can be bent to form a groove, and then the aforementioned arc-shaped recess or arc-shaped transition is provided between the groove and the front door body.

[0070] When the front frame and side panel are assembled, the side panel bending groove forms a covering cavity, which covers the closed cavity of the front frame, thus forming a double-layer structure.

[0071] In this embodiment, in order to increase the strength of the front door, it can be improved, for example, by bending the two sides of the front door towards the middle, so that the front door as a whole forms a closed cavity, or by forming a closed cavity at the same height as the front door in a local area.

[0072] In this embodiment, in order to reduce the structural volume, the front frame 100 can be divided into an upper frame 110 and a lower frame 120. At the connection between the upper and lower frames, a middle door 350 with a bent groove is provided. The front door 400 includes an upper door 410 and a lower door 420 that match the upper frame 110 and the lower frame 120 respectively.

[0073] In this embodiment, the bending groove is not limited to direct bending; it can also be formed by welding. For example, the bending groove of the back plate and / or the bending groove of the side plate can also be formed by welding.

[0074] See attached document Figure 7-16 As shown, the assembly process of the assembly cabinet in this embodiment is as follows:

[0075] First, the two side plates 200 form a clamping cavity. Then, the two rear plate vertical slots 320 of the rear plate 300 are inserted from bottom to top into the side plate bending slots of the two side plates 200 near the rear plate in the height direction. Then, the clearance slot 310 is covered by the side plate bending slot at the top of the side plate 200, completing the initial interference fit between the side plate and the rear plate. Then, along the height direction, the rear plate vertical slot 330 and the cavity 230 are fixed with screws. At this time, three or more screws can be set on each side. Of course, screws can also be omitted at this time and fixed later when the rear lower frame is set.

[0076] The second step is the assembly of the lower rear frame 500. At this time, the lower rear frame is inserted from bottom to top, and then the lower rear frame 500 is partially inserted into the cavity 230. The bottom is then interference-fitted with the assembly slot 240, making the overall assembly appearance look flat.

[0077] The third step is the assembly of the center bumper door and its connection to the front frame. At this point, the center bumper door 350 is directly inserted into the middle position of the front frame 100, and at the same time, at least three screws are used to fix the center bumper door and the front frame.

[0078] When assembling the front frame, it is installed lying on the ground. Specifically, the front frame is first placed into the side panel bending groove on the long side (i.e., the height direction) that is perpendicular to the ground.

[0079] Fourth step: Insert the front frame 100 along the structure after the side panel 200 and the rear panel 300 are assembled.

[0080] The fifth step involves assembling the waist panel 600 and the top panel 700. Specifically, the top panel 700 is bent near the front frame to form a U-shaped groove 710. The groove 710 aligns with the clearance space 221. Pressure strips can be added within the groove 710 to enhance assembly stability. The waist panel 600 and the top panel 700 undergo the same operation, completing the assembly from the outside in along the inner wall of the side panels. Alternatively, the sides of the top panel 700 and the waist panel 600 can be secured to the rear panel 300 at corresponding positions using screws.

[0081] In this embodiment, in order to increase the number of layers, several layers of partitions can be inserted. Specifically, several insertion holes can be provided on the inner wall of the side plate 200, and then the grid plate buckles are fixed through the insertion holes, and then the grid plate overlaps on top of the grid plate buckles.

[0082] The sixth step is the installation of the front door. Specifically, the lower door is installed first, followed by the upper door. In Xiamen, the lower door hinge and the middle door hinge are rotatably connected to the bottom of the front frame and the middle door hinge, respectively. The upper door is rotatably connected to the top plate via the upper door hinge.

[0083] This embodiment also includes installing handles on each front door for easy opening.

[0084] In this embodiment, several wall-locking components can be added to the top of the top plate 700 and then connected to the wall by expansion screws, while the bottom of the wall-locking components is fixed to the top plate by screws.

[0085] In this embodiment, the bending of each plate makes the entire assembly faster and more convenient.

[0086] In this embodiment, a closed frame is used for the front frame, which is then assembled primarily through insertion-type splicing via pre-reserved bending slots in the side and rear panels. Unlike the semi-closed or open frames commonly used in the industry, this fully enclosed frame forms a closed structure; installation is simple, requiring only direct insertion and reinforcement; the fully enclosed architecture reduces costs while improving cabinet stability; the frame and splicing method in this embodiment can be used in various types of steel cabinets.

[0087] In this embodiment, the front frame can also be configured to have a non-center-collision door, in which case the front door includes a left-side door and a right-side door, as shown in the attached diagram. Figure 17 As shown, the left and right side doors have the same structure, so only one type is shown.

[0088] See attached document Figure 18 As shown, when the front door includes left and right side doors, the assembly process does not require two steps. Instead, the corresponding side doors are directly assembled through the left and right side panels 200 to complete the installation of the front door.

[0089] The modular cabinet in this embodiment can be applied, for example, to form a bookshelf, as described below:

[0090] One type of bookshelf in this embodiment includes the assembled cabinet as described above. At the assembly point of the side panel and the back panel or the front door, several uprights are added and connected to the side panel with 200 screws. For example, in a cuboid modular cabinet, four uprights are generally set. The uprights are fixed internally by fixing them to the side panels. When used as a bookshelf, several layers need to be added to store books of different sizes. At this time, several positioning holes can be set in the height direction on each upright. The positioning holes of different uprights correspond one-to-one in the height direction, and the positioning holes at the same height form a group. Crossbeams or partitions can be assembled to divide and form a bookshelf.

[0091] See attached document Figure 20-21 As shown, it can be clearly seen that the front frame in this embodiment forms a closed cavity 110 as a whole, and then multiple pipes that make up the front frame have a cross-section that is also a closed cavity.

[0092] The detailed descriptions listed above are merely specific descriptions of feasible implementations of this utility model, and are not intended to limit the scope of protection of this utility model. All equivalent implementations or modifications made without departing from the spirit of this utility model should be included within the scope of protection of this utility model.

[0093] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0094] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An assembly cabinet, characterized in that, It includes a front frame, two side panels, a rear panel, and a front door assembled to the front frame via a door hinge. The front frame is integrally formed into a closed frame, and at least one assembly frame is provided within the closed frame. The left and right sides and the top of the rear plate are bent backward away from the front frame to form a rear plate bending groove, and the two ends of the rear plate bending groove located on the upper side are hollowed out to form a clearance groove. The sides of the side panel are all bent inward to form a side panel bending groove. The side panel bending groove at the bottom of the side panel and the front and rear ends of the side panel form a clearance gap for the insertion of the rear panel and the front frame. The front frame is integrally formed or welded from several hollow structures, and the cross-section of each hollow structure is a closed cavity in a closed state.

2. The assembly cabinet according to claim 1, characterized in that, The horizontal back panel bending groove is formed into an L-shaped groove by bending the sheet material, while the vertical back panel bending groove is formed into a U-shaped groove by bending the sheet material at least twice.

3. The assembly cabinet according to claim 2, characterized in that, The U-shaped groove is located within the side plate bending groove in the height direction of the side plate, and the side plate bending groove at the top of the side plate covers the clearance grooves at both ends of the L-shaped groove.

4. The assembly cabinet according to claim 2, characterized in that, The rear plate is provided with reinforcing ribs on the side away from the front frame and on the inner wall of the side plate, and there are at least two reinforcing ribs.

5. The assembly cabinet according to claim 4, characterized in that, The reinforcing ribs on the inner wall of the side plate are bent or welded grooves with U-shapes, and the grooves of the reinforcing ribs are provided with a number of adjustment holes along the height direction and / or the horizontal direction.

6. The assembly cabinet according to claim 1, characterized in that, The top of the side plate is bent to form an L-shaped side plate bending groove, which overlaps with the bending groove on the upper side of the rear plate, so that the side plate and the rear plate are interference fit.

7. An assembly cabinet according to claim 6, characterized in that, The side panel bending groove located in the height direction and near the front frame is a U-shaped groove. The side of the U-shaped groove parallel to the side panel is recessed at least at the top, middle and bottom to form a clearance space.

8. An assembly cabinet according to claim 6, characterized in that, The side plate bending groove located in the height direction and near the rear plate is bent three times to form the first cavity that matches the clearance groove.

9. An assembly cabinet according to claim 6, characterized in that, The rear plate is inserted into the side plate to form a second cavity, and also includes a rear lower frame that is inserted into the two second cavities at both ends. The rear lower frame inserted into the second cavity is fixedly connected to the second cavity with screws.

10. An assembly cabinet according to claim 1, characterized in that, It also includes a top plate and a bottom plate, which are bent upwards and downwards respectively to form a first bending cavity and a second bending cavity, and the two ends of the front frame and the side plate respectively abut against the first bending cavity and the second bending cavity.

11. An assembly cabinet according to claim 1, characterized in that, The outer circumference of the front door is curved inward in an arc-shaped indentation, with the arc angle ranging from 15° to 45°.

12. A bookshelf comprising an assembly cabinet as described in any one of claims 1-11, characterized in that, It also includes several uprights that are screwed to the side panels; Each of the columns has several positioning holes along the height direction, and the positioning holes on different columns correspond one-to-one along the height direction.

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