Stacked storage unit and crack cabinet

Abstract

The utility model relates to the technical field of storage cabinets, in particular to a stacked storage unit and a crevice cabinet, which comprises a bottom plate, a first connecting protrusion part, a second connecting protrusion part and a plurality of second connecting protrusion parts, a first connecting groove is formed in the side plate in a sunken mode, and the first connecting protruding part can be inserted into the first connecting groove, so that the bottom plate and the side plate are connected with each other; the back plate is arranged on the bottom plate; a containing cavity is defined by the bottom plate, the side plates and the back plate. A first elastic clamping strip is further formed on the bottom plate in a protruding mode, a clamping block is formed on the first elastic clamping strip in a protruding mode, and a first clamping hole is formed in the side wall of the first connecting groove; when the first connecting protruding part is inserted into the first connecting groove, the clamping block is matched with the first clamping hole, and the bottom plate is connected to the lower end of the side plate. When disassembly is needed, the clamping blocks are pressed, the first elastic clamping strips deform, the clamping blocks are separated from the first clamping holes, and then the side plates and the bottom plate can be separated.

Description

Technical Field

[0001] This utility model relates to the field of storage cabinet technology, specifically to a stacked storage unit and a narrow cabinet. Background Technology

[0002] In daily life, people like to use various storage cabinets to increase storage space and make life more convenient. Using storage cabinets properly can also make better use of the interior space of a house, making the house tidier.

[0003] 1. In modern life, different furniture, due to their different shapes and contours, will create many gaps. Common storage cabinets are difficult to fit into these gaps, thus failing to make more effective use of indoor space.

[0004] 2. Currently, modular cabinets typically use snap-fit ​​connections to link multiple components together. While snap-fit ​​connections are convenient and quick to operate, it is difficult to apply force directly to the internal snap-fit ​​structure during disassembly, making it difficult to change the connection status and thus inconvenient for disassembly. Utility Model Content

[0005] The purpose of this utility model is to provide a stackable storage unit and a narrow cabinet that can effectively utilize the narrow space formed indoors for storage, while the cabinet is easy to assemble and disassemble.

[0006] The purpose of this utility model is achieved as follows:

[0007] A stackable storage unit, comprising:

[0008] The base plate has a protruding connecting protrusion.

[0009] The side plate has a recessed connecting groove, and the connecting protrusion can be inserted into the connecting groove to connect the bottom plate and the side plate to each other.

[0010] A back plate, which is disposed on the base plate;

[0011] The bottom plate, side plates, and back plate form a storage cavity;

[0012] The base plate also has a protruding elastic strip, and the elastic strip has a protruding block. The side wall of the connecting groove has a card hole.

[0013] When the connecting protrusion is inserted into the connecting groove, the locking block and the locking hole cooperate to connect the bottom plate to the lower end of the side plate.

[0014] When disassembly is required, pressing the locking block causes the elastic locking strip to deform, causing the locking block to disengage from the locking hole, thus separating the side plate and the bottom plate.

[0015] A narrow cabinet includes a stacked storage unit as described above, wherein the upper end of the side panel is formed with a connecting protrusion and an elastic clip, and the lower end of the bottom panel is formed with a connecting groove.

[0016] When two stacked storage units are stacked one on top of the other, the connecting protrusion 2 on the side plate of the lower stacked storage unit can engage with the connecting groove 2 on the bottom plate of the upper stacked storage unit, so that the two stacked storage units can be stacked one on top of the other.

[0017] Preferably, a storage box is movably disposed inside the storage cavity, the storage box has a side wall opening, a pull plate is detachably disposed at the side wall opening, and a locking tooth is protruding from the lower side of the pull plate.

[0018] The storage box has a snap-fit ​​part formed on it, and the snap-fit ​​part 1 cooperates with the snap-fit ​​part so that the lower end of the pull plate can be connected to the storage box.

[0019] The upper side of the pull plate has a fixed protruding edge, and the upper end of the storage box has a mounting groove. Through the cooperation of the fixed protruding edge and the mounting groove, the upper end of the pull plate can be connected to the storage box and the pull plate can cover the side wall opening.

[0020] Preferably, the mounting slot is Y-shaped.

[0021] Preferably, the storage box is equipped with casters, enabling it to move within the storage cavity.

[0022] Preferably, it also includes a top storage unit that can be detachably connected above the stacked storage units;

[0023] The top storage unit includes:

[0024] A connecting box is detachably connected to the stacked storage unit, and the upper end of the connecting box is open.

[0025] Door panel two is connected to the upper end of the connecting box body, so that door panel two can close the connecting box body.

[0026] Preferably, the upper end of the connecting box body is provided with a connecting shell, and the connecting shell is formed with an opening that leads to the interior of the connecting box body;

[0027] The second door panel is hinged to the connecting shell, so that the second door panel can close the opening when it is closed;

[0028] The connecting shell has a recessed storage slot three, and a door panel three is hinged to the connecting shell. The door panel three is used to close the storage slot three.

[0029] Preferably, it also includes a door panel, wherein hinge posts are protruding from the upper parts of the left and right ends of the door panel.

[0030] The inner wall of the side plate is formed with a sliding groove;

[0031] The hinge post can be slidably placed into the sliding groove, so that the door panel is hinged to the stacked storage unit.

[0032] Preferably, it also includes a door panel, wherein hinge posts are protruding from the upper parts of the left and right ends of the door panel.

[0033] The inner wall of the side plate is formed with a sliding groove;

[0034] The hinge post can be slidably placed into the sliding groove, so that the door panel is hinged to the stacked storage unit.

[0035] The outstanding and beneficial technical effects of this utility model compared to the prior art are:

[0036] 1. The narrow cabinet in this technical solution can be formed by stacking several storage units, which can better assemble the cabinet according to the space conditions of the user's actual installation location, thus improving the flexibility and applicability of the cabinet during use.

[0037] 2. The narrow cabinet in this technical solution is assembled from multiple stackable storage units and a top storage unit. The narrow cabinet is easy to assemble and disassemble, and the stackable storage units and the top storage unit can be quickly assembled or disassembled, making it convenient for users.

[0038] 3. The storage boxes come in a variety of styles, and different shapes can be selected depending on the location of the storage box. This allows the side openings of the storage boxes to face different directions, making them more convenient for daily use. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the assembled structure of Embodiment 1 of this utility model;

[0040] Figure 2 This is a schematic diagram of the stacked storage unit according to Embodiment 1 of this utility model;

[0041] Figure 3 This is a cross-sectional view of the stacked storage unit according to Embodiment 1 of this utility model;

[0042] Figure 4This is an exploded view of the stacked storage unit of Embodiment 1 of this utility model;

[0043] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0044] Figure 6 for Figure 3 Enlarged view of point C in the middle;

[0045] Figure 7 This is a structural diagram of the bottom plate of another stacked storage unit connected to the top of the stacked storage unit in Embodiment 1 of this utility model;

[0046] Figure 8 This is a rear view of the pull plate according to Embodiment 1 of this utility model;

[0047] Figure 9 This is a partial cross-sectional view of the snap-fit ​​joint between the pull plate and the storage box in Embodiment 1 of this utility model;

[0048] Figure 10 for Figure 4 Enlarged view of point C in the middle;

[0049] Figure 11 This is a cross-sectional view of the fixing protrusion of the pull plate and the mounting groove of the storage box body in Embodiment 1 of this utility model.

[0050] Figure 12 This is a cross-sectional view of the stacked storage unit in Embodiment 1 of this utility model when a top storage unit is provided at the top.

[0051] Figure 13 This is a schematic diagram of the stacked storage unit according to Embodiment 3 of this utility model;

[0052] Figure 14 This is an assembly diagram of the door panel two of the stacked storage unit according to Embodiment 3 of this utility model;

[0053] Figure 15 This is an exploded view of the stacked storage unit of Embodiment 3 of this utility model when the rear side panel is removed;

[0054] Figure 16 This is a cross-sectional view of the stacked storage unit according to Embodiment 3 of this utility model;

[0055] Figure 17 This is a schematic diagram of the stacked storage unit of Embodiment 4 of this utility model.

[0056] Figure label:

[0057] 1. Stackable storage unit; 11. Storage box; 12. Side wall opening; 13. Pull-out panel; 131. Fixing protrusion; 132. First locking tooth; 133. Locking part; 14. Storage cavity; 15. Mounting groove; 16. Roller;

[0058] 2. Side panel; 21. Connecting groove one; 22. Locking hole one; 23. Connecting protrusion two; 24. Elastic locking strip two; 26. Limiting groove; 27. Limiting protrusion one; 28. Protrusion; 281. Upper inclined edge; 282. Lower inclined edge; 29. ​​Sliding groove; 20. Slot; 201. Locking hole three;

[0059] 3. Base plate; 31. Connecting protrusion one; 32. Elastic retaining strip one; 321. Retaining block; 322. Boosting ramp; 33. Notch; 34. Connecting groove two; 35. Retaining hole two; 36. Positioning protrusion;

[0060] 4. Back panel; 41. Positioning groove; 42. Limiting part; 43. Limiting protrusion two;

[0061] 5. Top storage unit; 51. Connecting box; 52. Door panel four;

[0062] 6. Connecting shell; 61. Storage compartment three; 62. Door panel three;

[0063] 7. Door panel one; 72. External frame; 73. Hinge column; 74. Opening; 75. Sealing plate; 76. Protrusion; 8. Support plate; 9. Top plate; 91. Insertion part; 92. Three locking teeth; Detailed Implementation

[0064] The following are specific embodiments of the present invention, and the technical solution of the present invention will be further described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0065] Example 1

[0066] like Figures 1-3 The stacked storage unit 1 shown includes:

[0067] The base plate 3 has a connecting protrusion 31 protruding from its upper surface;

[0068] Side plate 2 has a recessed connecting groove 21 at its lower end, and a connecting protrusion 31 can be inserted into the connecting groove 21 to connect the bottom plate 3 and the side plate 2.

[0069] Back plate 4 is mounted on base plate 3.

[0070] The end of the side plate 2 is formed with a limiting protrusion 27, and a limiting groove 26 is formed in the limiting protrusion 27. The back plate 4 is formed with a limiting part 42, which can cooperate with the limiting groove 26 to connect the back plate 4 to one end of the side plate 2.

[0071] The lower end of the back plate 4 is formed with a positioning groove 41, and the bottom plate 3 is formed with a positioning protrusion 36. Through the cooperation of the positioning groove 41 and the positioning protrusion 36, the back plate 4 can be connected to the bottom plate 3.

[0072] The base plate 3, side plate 2 and back plate 4 work together to form a storage cavity 14, which can hold items.

[0073] The base plate 3 also has a protruding elastic retaining strip 32, and the side wall of the connecting groove 21 has a retaining hole 22.

[0074] like Figure 6 As shown, when the connecting protrusion 31 is inserted into the connecting groove 21, a locking block 321 protrudes from the elastic locking strip 32. The locking block 321 on the elastic locking strip 32 can extend into the locking hole 22 on the connecting groove 21, restricting the movement of the elastic locking strip 32 in the connecting groove 21. Through the cooperation of the elastic locking strip 32 and the locking hole 22, a locking connection is formed between the lower end of the base plate 3 and the side plate 2.

[0075] When disassembly is required, pressing the locking block 321 causes the elastic locking strip 32 to deform, causing the locking block 321 to disengage from the locking hole 22, thereby allowing the elastic locking strip 32 to move back into the connecting groove 21, and further allowing the elastic locking strip 32 to be pulled out from the connecting groove 21, thus separating the side plate 2 and the bottom plate 3.

[0076] Furthermore, a boosting ramp 322 is formed in the insertion direction of the locking block 321. When the elastic locking strip 32 is inserted into the connecting groove 21, the boosting ramp 322 will contact the side wall of the connecting groove 21 and cause the elastic locking strip 32 to bend, making it easier for the elastic locking strip 32 to be inserted into the connecting groove 21.

[0077] like Figures 1-7 The cabinet shown has a connecting protrusion 23 and an elastic clip 24 protruding from the upper end of the side panel 2, and a connecting groove 34 recessed from the lower end of the bottom panel 3. The side wall of the connecting groove 34 has a clip hole 35.

[0078] When two stacked storage units 1 are stacked one on top of the other, the connecting protrusion 23 of the side plate 2 of the lower stacked storage unit 1 can cooperate with the connecting groove 34 of the bottom plate 3 of the upper stacked storage unit 1, so that the two stacked storage units 1 can be stacked one on top of the other.

[0079] The upper end of the back plate 4 is formed with a limiting protrusion 43. The limiting protrusion 43 of the back plate 4 of the lower stacked storage unit 1 can be inserted into the lower end of the bottom plate 3 of the upper stacked storage unit 1, thereby further fixing the position between the upper and lower stacked storage units 1.

[0080] Since the elastic clip 24 and the elastic clip 32 have the same structure, and the clip hole 35 and the clip hole 22 also have the same structure, the fit between the elastic clip 24 and the clip hole 35 is the same as the fit between the elastic clip 32 and the clip hole 22. Therefore, the connection relationship between the elastic clip 24 and the connecting groove 34 will not be described in detail here.

[0081] like Figures 1-9 As shown, a storage box 11 is movably disposed inside the storage cavity 14. The storage box 11 has a side wall opening 12. A pull plate 13 is detachably disposed at the side wall opening 12. A locking tooth part 132 is protruding from the lower side of the pull plate 13.

[0082] The storage box 11 has a snap-fit ​​part 133 formed on it, and the snap-fit ​​part 132 cooperates with the snap-fit ​​part 133 so that the lower end of the pull plate 13 can be connected to the storage box 11.

[0083] The upper side of the pull plate 13 has a fixed protruding edge 131, and the upper end of the storage box 11 has an installation groove 15. Through the cooperation of the fixed protruding edge 131 and the installation groove 15, the upper end of the pull plate 13 can be connected to the storage box 11, and the pull plate 13 can cover the side wall opening 12.

[0084] By pulling the pull plate 13, the storage box 11 can be pulled out from the storage cavity 14, making it convenient for users to put items into the storage box 11 or take items out of the storage box 11.

[0085] As a preferred embodiment, the storage box 11 is provided with casters 16, which makes it easier for the storage box 11 to move within the storage cavity 14.

[0086] Specifically, such as Figure 10 and Figure 11 As shown, the mounting slot 15 is Y-shaped.

[0087] When the fixed protrusion 131 is inserted into the "Y"-shaped mounting groove 15, the lower end of the fixed protrusion 131 will be fixed to the lower inner side of the "Y"-shaped mounting groove 15, thereby limiting the shaking of the fixed protrusion 131 in the mounting groove 15.

[0088] When it is necessary to remove the pull plate 13 from the storage box 11, raising the height of the pull plate 13 makes it easier to tilt the fixed protruding edge 131, thereby making it easier to remove the pull plate 13 from the storage box 11.

[0089] In a preferred embodiment, the connecting protrusion 31 has a notch 33, which reduces the cross-sectional area of ​​the insertion end of the connecting protrusion 31, making it easier to insert the connecting protrusion 31 into the connecting groove 21.

[0090] like Figures 1-12 As shown, this embodiment also includes a top storage unit 5, which can be detachably connected to the top of the stacked storage unit 1;

[0091] The top storage unit 5 includes...

[0092] The connecting box 51 is detachably connected to the stacked storage unit 1. The upper end of the connecting box 51 is open, making it easy for the user to put items into the interior of the connecting box 51.

[0093] Door panel 2 52 is connected to the upper end of the connecting box 51, so that door panel 2 52 can close the connecting box 51.

[0094] Furthermore, a connecting shell 6 is provided at the upper end of the connecting box 51, and an opening is formed on the connecting shell 6, which leads to the interior of the connecting box 51.

[0095] Door panel 2 52 is hinged to connecting shell 6, so that when door panel 2 52 is closed, it can close the opening.

[0096] The connecting shell 6 has a recessed storage slot 3 61, and a door panel 3 62 is hinged to the connecting shell 6. The door panel 3 62 is used to close the storage slot 3 61.

[0097]

Example 2

[0098] This embodiment is basically the same as Embodiment 1, except that:

[0099] The snap-fit ​​portion 133 on the storage box 11 is formed at the periphery of the side wall opening 12.

[0100] The position of the locking tooth 132 formed on the inner side of the pull plate 13 matches the shape of the locking part 133. When the pull plate 13 is engaged with the storage box 11, the locking tooth 132 engages with the locking part 133, so that the pull plate 13 is connected to the side wall opening 12 of the storage box 11.

[0101]

Example 3

[0102] like Figures 13-16 As shown, the difference between this embodiment and the previous embodiment is that:

[0103] The side plate 2 of the stacked storage unit 1 has an upper inclined edge 281 and a lower inclined edge 282 formed thereon, and the upper inclined edge 281 and the lower inclined edge 282 cooperate to form a protrusion 28.

[0104] After the stacked storage unit 1 is assembled, a side wall opening 12 is formed between the upper inclined edges 281 of the two side plates 2 of the stacked storage unit 1. In this embodiment, the side wall opening 12 is inclined upwards, which makes it easier for the user to put items into the stacked storage unit 1 when the stacked storage unit 1 is positioned low. At the same time, the protrusion 28 also increases the interior space of the stacked storage unit 1.

[0105] In this embodiment, the stacked storage unit 1 also includes a door panel 7, with hinge posts 73 protruding from the upper parts of the left and right ends of the door panel 7. The door panel 7 can be hinged to the stacked storage unit 1, and the end of the door panel 7 can abut against the upper inclined edge 281, so that the door panel 7 can cover the side wall opening 12.

[0106] A support plate 8 is provided between the lower slope edges 282 of the two side panels 2. The support plate 8 can cover the area between the lower slope edges 282 of the two side panels 2 to prevent items from falling from this area.

[0107] The door panel 7 includes an outer frame 72 and a sealing plate 75. The outer frame 72 has a hinge post 73 formed on it, so that the outer frame 72 can be hinged to the stacked storage unit 1, and the edge of the outer frame 72 abuts against the side wall opening 12.

[0108] The outer frame 72 has an opening 74 in the middle. The edge of the opening 74 is turned inward, and a protrusion 76 is provided on the side wall of the turned-in edge. The edge of the sealing plate 75 is provided with a flange, which is shaped like an "n". A slot is provided on the inner wall of the "n". When the sealing plate 75 is placed at the opening 74, the side wall of the turned-in edge is placed in the space of the "n", and the protrusion is locked in the slot, thereby realizing the connection between the outer frame 72 and the sealing plate 75.

[0109] A handle can also be provided on the outer frame 72, which makes it easy to pull the door panel 7 to flip, thereby opening the door panel 7 and exposing the side wall opening 12.

[0110] Furthermore, a sliding groove 29 is formed on the inner wall of the side plate 2.

[0111] The hinge post 73 can slide into the sliding groove 29, so that the door panel 7 is hinged to the stacked storage unit 1.

[0112] The storage box 11 has a sliding groove 29 formed inside, and the pull plate 13 has a hinge post 73 protruding from it. The hinge post 73 can be inserted into the sliding groove 29, so that the pull plate 13 is hinged to the storage box 11.

[0113] Furthermore, the side plate 2 has a slot 20 formed on it, and the two ends of the top plate 9 are formed as insertion parts 91, which can be inserted into the slot 20 to connect the top plate 9 with the side plate 2.

[0114]

Example 4

[0115] Specifically, such as Figure 17 As shown, this embodiment is basically the same as embodiment three, except that:

[0116] The upper end of the side plate 2 has a locking hole 201, and the insertion part 91 has a locking tooth part 92. When the insertion part 91 is engaged with the slot 20, the locking tooth part 92 can be inserted into the locking hole 201, so that the side plate 2 and the top plate 9 are engaged.

[0117] Meanwhile, the locking teeth 92 protrude upwards to the outside of the storage box 11, so that the user can press the locking teeth 92 to separate the locking teeth 92 from the locking hole 201, thereby facilitating the disassembly of the storage box 11.

[0118] It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this invention, should still fall within the scope of the disclosed technical content. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0119] It should also be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or may be connected to an intermediary component. When a component is referred to as being "connected to" another component, it can be directly connected to the other component or indirectly connected to the other component through an intermediary component.

[0120] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

Claims

1. A stacked storage unit, characterized in that, include: The base plate (3) has a protruding connecting protrusion (31); The side plate (2) has a recessed connecting groove (21) and the connecting protrusion (31) can be inserted into the connecting groove (21) to connect the bottom plate (3) and the side plate (2) to each other. Back plate (4), which is disposed on the base plate (3); The bottom plate (3), side plate (2) and back plate (4) form a storage cavity (14); The base plate (3) also has an elastic clip (32) protruding out, and a clip (321) protruding out on the elastic clip (32). The side wall of the connecting groove (21) has a clip hole (22). When the connecting protrusion (31) is inserted into the connecting groove (21), the locking block (321) and the locking hole (22) cooperate to connect the bottom plate (3) to the lower end of the side plate (2); When disassembly is required, pressing the locking block (321) causes the elastic locking strip (32) to deform, causing the locking block (321) to disengage from the locking hole (22), thereby separating the side plate (2) and the bottom plate (3).

2. A narrow cabinet, comprising a stacking storage unit as described in claim 1, characterized in that: The side plate (2) has a connecting protrusion (23) and an elastic clip (24) protruding out, and the bottom plate (3) has a connecting groove (34) recessed at the lower end; When two stacked storage units (1) are stacked one on top of the other, the connecting protrusion (23) of the side plate (2) of the lower stacked storage unit (1) can cooperate with the connecting groove (34) of the bottom plate (3) of the upper stacked storage unit (1) so that the two stacked storage units (1) can be stacked one on top of the other.

3. The narrow cabinet according to claim 2, characterized in that: The storage cavity (14) is movably provided with a storage box (11), the storage box (11) has a side wall opening (12), a pull plate (13) is detachably provided at the side wall opening (12), and a toothed part (132) is protruding from the lower side of the pull plate (13). The storage box (11) has a snap-fit ​​part (133) formed on it. The snap-fit ​​part (132) cooperates with the snap-fit ​​part (133) so that the lower end of the pull plate (13) can be connected to the storage box (11). The upper side of the pull plate (13) is formed with a fixed protrusion (131), and the upper end of the storage box (11) is formed with an installation groove (15). Through the cooperation of the fixed protrusion (131) and the installation groove (15), the upper end of the pull plate (13) can be connected to the storage box (11), and the pull plate (13) can cover the side wall opening (12).

4. A narrow cabinet according to claim 3, characterized in that: The mounting slot (15) is Y-shaped.

5. A narrow cabinet according to claim 3, characterized in that; The storage box (11) is equipped with casters (16) so that the storage box (11) can move within the storage cavity (14).

6. A narrow cabinet according to any one of claims 3-5, characterized in that: It also includes a top storage unit (5) which can be detachably connected above the stacked storage unit (1); The top storage unit (5) includes: A connecting box (51) is detachably connected to the stacked storage unit (1), and the upper end of the connecting box (51) is open. Door panel two (52) is connected to the upper end of the connecting box (51), so that door panel two (52) can close the connecting box (51).

7. A narrow cabinet according to claim 6, characterized in that: The upper end of the connecting box (51) is provided with a connecting shell (6), and the connecting shell (6) has an opening that leads to the interior of the connecting box (51). The second door panel (52) is hinged to the connecting shell (6) so that the second door panel (52) can close the opening when closed; The connecting shell (6) has a recessed storage slot three (61), and a door panel three (62) is hinged to the connecting shell (6). The door panel three (62) is used to close the storage slot three (61).

8. A narrow cabinet according to claim 2, characterized in that: It also includes a door panel (7), and hinge posts (17) are protruding from the upper part of the left and right ends of the door panel (7). The inner wall of the side plate (2) is formed with a sliding groove (29); The hinge post (17) can be slidably placed into the sliding groove (29) so that the door panel (7) is hinged to the stacked storage unit (1).

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