Express cabinet unit and combined express cabinet

Abstract

The invention provides an express cabinet unit, and belongs to the technical field of express cabinets. The technical problems that an existing express cabinet is unstable in structure, high in cost and the like due to the fact that single cabinet bodies serve as small units to be stacked are solved. The express cabinet unit comprises a plurality of laminates, the laminates are vertically arranged in a layered mode and are rectangular, a back plate and two side plates are arranged between every two adjacent laminates, the two side plates are connected to the two sides of the adjacent laminates respectively, the back plate is connected to the rear sides of the adjacent laminates, and a supporting partition plate is further arranged between every two adjacent laminates. The supporting partition plate divides the space between the adjacent layer plates into two express storage cavities, and each express storage cavity is correspondingly provided with a door plate. The device has the advantages of structural stability and cost saving. The combined express cabinet comprises at least two express cabinet units, and the bottom plates of the two express cabinet units are connected with each other. The method has the advantage of being capable of being rapidly built.

Description

Technical Field

[0001] The present invention belongs to the technical field of express delivery cabinets, and relates to an express delivery cabinet unit and also to a combined express delivery cabinet. Background Art

[0002] Courier cabinets are used to store express parcels. Currently, many communities, office buildings and other places where people gather place courier cabinets to facilitate delivery and collection. The size of the courier cabinet is determined by the number of people at the location where it is placed. Conventional courier cabinets are frame-type integral structures with fixed frame size configurations, resulting in a fixed size of the courier cabinet and the inability to adjust the size of the courier cabinet. For example, a smart courier cabinet system disclosed in a Chinese patent document [Application No. CN202111079453.4], etc.

[0003] In order to solve the above problems, some express cabinets currently adopt a modular structure, such as the express cabinet and express delivery method with a variable number of boxes in the express cabinet unit disclosed in the Chinese patent literature [Application No. 201810286515.0], a single modular express cabinet [Application No. 201710416417.X], etc., whose smallest unit includes a cabinet with an express storage cavity, and the express cabinet is assembled as a whole by stacking the cabinets up and down and arranging them left and right. In order to accommodate general large parcels, the length of the express storage cavity of a single cabinet is generally between 40cm and 60cm, but the overall height of the express cabinet is generally about 2m, that is, the height of the cabinet is relatively small after the cabinet is stacked up and down, resulting in a single row of cabinets that are easy to shake and poor overall stability of the express cabinet; when a single cabinet is stacked, each cabinet includes a bottom plate, a top plate and two side plates. When stacked up and down and arranged left and right, the top plate and the bottom plate and the adjacent side plates overlap in function, resulting in structural waste, resulting in a high overall cost of the express cabinet. Summary of the invention

[0004] The purpose of the present invention is to address the above-mentioned problems in the prior art and to propose an express cabinet unit. The technical problem solved by the present invention is to improve the structural stability of a single express cabinet unit and save costs.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] A courier cabinet unit comprises a plurality of shelf panels, characterized in that the plurality of shelf panels are arranged in upper and lower layers, the shelf panels are rectangular, a back panel and two side panels are provided between adjacent shelf panels, the two side panels are respectively connected to the two sides of adjacent shelf panels, the back panel is connected to the rear sides of adjacent shelf panels, and a supporting partition is provided between adjacent shelf panels, the supporting partition panel divides the space between adjacent shelf panels into two courier storage cavities, and each courier storage cavity is correspondingly installed with a door panel.

[0007] The upper and lower layered structure of the express cabinet unit allows the layer to serve as both the top plate of the lower express storage cavity and the bottom plate of the upper express storage cavity, thereby achieving the shared use of the layer between the upper and lower express storage cavities; the supporting partitions separate the express storage cavities, that is, the supporting partitions between the left and right express storage cavities are shared; the layer and supporting partitions are shared, making the structure of the express cabinet unit more compact and simple, requiring fewer parts and components, saving costs, and also making the structure more stable.

[0008] Each shelf corresponds to two express storage cavities. The length of the express storage cavity needs to match the large parcels, that is, the length of a single express storage cavity is generally between 40cm and 60cm, and the length of the shelf corresponding to the two express storage cavities is between 80m and 120cm. The longer shelf greatly increases the length-to-height ratio of the express cabinet unit. A single express cabinet unit is not easy to shake in the length direction, making the structure of a single express cabinet unit more stable. Adjacent shelves are supported by a back panel, two side panels and supporting partitions. When in use, they can be assembled layer by layer by building blocks. The structure is simpler and the assembly is more convenient. Express cabinet units of different heights can be assembled according to actual needs, and the scope of application is wider.

[0009] In the above-mentioned express cabinet unit, the upper and lower sides of the side panel are respectively against the corresponding layer panel, and the upper and lower sides of the side panel are provided with a hook 1, and the upper and lower sides of both ends of the layer panel are provided with a connecting groove 1, and the connecting groove 1 is provided with a hook 2, and the hook 1 of the side panel can be buckled with the hook 2 corresponding to the layer panel. The hook 1 and the hook 2 can realize the position between the side panel and the layer panel in the vertical and longitudinal directions, and can realize the rapid assembly of the side panel and the layer panel, with a simple structure and convenient assembly.

[0010] In the above-mentioned express cabinet unit, positioning blocks are further provided on the upper and lower sides of the side panels, and the positioning blocks are inserted into the connection groove 1. The positioning blocks can increase the contact surface between the side panels and the layer panels in the height direction, and increase the connection strength between the side panels and the layer panels.

[0011] In the above-mentioned express cabinet unit, the upper and lower sides of the supporting partition are respectively against the corresponding layer plates, and the upper and lower sides of the supporting partition are provided with hooks 3, and the upper and lower sides of the middle section of the layer plate are provided with connecting grooves 2, and hooks 4 are provided in the connecting grooves 2, and hooks 3 of the supporting partition can be buckled with hooks 4 corresponding to the layer plates. Hooks 3 and 4 can realize the position between the supporting partition and the layer plate in the up-down and length directions, and can realize the rapid assembly of the supporting partition and the layer plate, with a simple structure and convenient assembly.

[0012] In the above-mentioned express cabinet unit, the lower side of the back panel abuts against the layer panel located below, a plurality of plug-in plates 1 are provided at the lower end of the back panel, a plurality of plug-in holes are provided at the rear side of the layer panel, the plug-in plates 1 of the back panel are plugged into the plug-in holes of the layer panel located below, and the upper side of the back panel abuts against the layer panel located above. The back panel is fixed by the plug-in plates 1 cooperating with the plug-in holes of the layer panel, and the structure is simple and easy to assemble.

[0013] In the above-mentioned express cabinet unit, two back panels are provided between adjacent layer panels, and the two back panels are respectively located on both sides of the supporting partition, and the inner side of the rear end of the side panel is provided with a plug-in slot 1, and both sides of the rear end of the supporting partition are provided with a plug-in slot 2, and both sides of the back panel are provided with a plug-in board 2, and one of the plug-in boards 2 of the back panel is connected to the plug-in slot 1 of the side panel, and the other plug-in board 2 of the back panel is connected to the plug-in slot 2 of the supporting partition. Through this structure, the back panel is fixed between the side panel and the supporting partition, and the structure can limit the position of the side panel and the supporting partition along the width direction of the layer panel.

[0014] By means of the mutual coordination and positioning between the side panels, layer panels, supporting partitions and back panels, a fixed connection between the side panels, layer panels and back panels is achieved. No bolts or other fasteners are required. The structure is simple and rapid assembly of the express cabinet unit can be achieved.

[0015] In the above-mentioned express cabinet unit, the upper and lower sides of the layer plate located on both sides of the connecting groove 2 are provided with connecting grooves 3, and the connecting grooves 3 between adjacent layer plates can be installed with partition plates. The partition plate is optional and can further divide the express storage cavity into two independent spaces for placing smaller express parcels, thereby improving the storage efficiency of the express cabinet.

[0016] In the above-mentioned express cabinet unit, a front convex edge is protruded from the middle of the front side of the layer plate, and a plurality of hinge holes are opened on the front convex edge. The hinge holes are used for the installation of the door panel.

[0017] In the above-mentioned express cabinet unit, a top cover is fixed on the top layer plate, and a mounting cavity is formed between the top cover and the layer plate. The mounting cavity can accommodate the wiring harness and chip of the express cabinet.

[0018] The present invention also proposes a modular express cabinet, which solves the technical problem of enabling rapid construction of the modular express cabinet.

[0019] A combined express cabinet includes at least two express cabinet units, wherein the lowermost layer in the express cabinet unit is a bottom plate, characterized in that a positioning convex portion is provided on one side surface of the bottom plate, and a positioning concave portion is provided on the other side surface of the bottom plate, and the positioning convex portion of one bottom plate of adjacent express cabinet units is inserted into the positioning concave portion of the other bottom plate. The relative fixation of two adjacent express cabinet units is achieved by this structure. When the structure of the express cabinet units is stable, the overall structure of the combined express cabinet can be ensured to be stable only by connecting the bottom plates of the express cabinet units. The structure is simple, and no additional structural reinforcement is required, so the combined express cabinet can be quickly built.

[0020] Compared with the prior art, this express cabinet unit has the advantages of more stable structure, convenient assembly, wider application range and lower cost; this combined express cabinet has the advantages of stable structure and can be quickly assembled. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the combined express cabinet in Example 1.

[0022] Figure 2 It is a schematic diagram of the three-dimensional structure of the express cabinet unit in Example 1.

[0023] Figure 3 It is a schematic diagram of the three-dimensional structure of the express cabinet unit in Example 1 after removing the door panel at the bottom layer.

[0024] Figure 4 It is a schematic diagram of the three-dimensional structure of the layer board.

[0025] Figure 5 It is a three-dimensional structural diagram of the layer plate from another perspective.

[0026] Figure 6 It is a schematic diagram of the three-dimensional structure of the side panel.

[0027] Figure 7 It is a schematic diagram of the three-dimensional structure of the supporting partition.

[0028] Figure 8 It is a schematic diagram of the cross-sectional structure of the upper and lower side panels connected to the layer panel.

[0029] Fig. 9 It is a schematic diagram of the front view structure of the back panel.

[0030] Fig.10 It is a top view structural diagram of the connection of the side panels, supporting partitions, partition panels and back panels.

[0031] In the figure, 1. express cabinet unit; 11. express storage cavity; 12. door panel; 2. shelf panel; 21. front convex edge; 211. hinge hole; 22. connecting slot one; 221. hook two; 23. connecting slot two; 231. hook four; 24. plug-in hole; 25. connecting slot three; 3. bottom plate; 31. positioning convex part; 32. positioning concave part; 4. side plate; 41. hook one; 42. positioning block; 43. plug-in slot one; 5. back plate; 51. plug-in board one; 52. plug-in board two; 6. supporting partition; 61. hook three; 62. plug-in slot two; 7. partition plate; 8. top cover; 9. reinforcing strip group; 91. reinforcing strip; 92. reinforcing rib. DETAILED DESCRIPTION

[0032] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0033] Embodiment 1

[0034] like Figure 1 As shown, the combined express cabinet includes at least two express cabinet units 1, and the express cabinet unit 1 includes a plurality of layer plates 2, and the plurality of layer plates 2 are arranged in layers up and down. The layer plate 2 located at the bottom of the express cabinet unit 1 is the bottom plate 3, and the thickness of the bottom plate 3 is greater than the thickness of the upper layer plate 2. A positioning protrusion 31 is provided on one side surface of the bottom plate 3, and the positioning protrusion 31 is a vertically arranged positioning protrusion protruding relative to the side surface of the bottom plate 3. A positioning recess 32 is provided on the other side surface of the bottom plate 3, and the positioning recess 32 is a connecting portion protruding relative to the side surface of the bottom plate 3 and a positioning groove is opened on the connecting portion in the vertical direction. The positioning protrusion 31 of one of the bottom plates 3 in the adjacent express cabinet units 1 is inserted into the positioning groove of the positioning recess 32 of the other bottom plate 3. In this embodiment, the combined express cabinet is composed of two express cabinet units 1 arranged side by side.

[0035] like Figures 2 to 10 As shown, the shelf 2 is rectangular, and a back panel 5 and two side panels 4 are provided between adjacent shelf panels 2. The two side panels 4 are respectively connected to the two sides of the adjacent shelf panels 2, and the back panel 5 is connected to the rear side of the adjacent shelf panels 2. A supporting partition 6 is also provided between the adjacent shelf panels 2. The supporting partition 6 divides the space between the adjacent shelf panels 2 into two express storage chambers 11. A front convex edge 21 is protruded from the middle part of the front side of the shelf panel 2, and a plurality of hinge holes 211 are opened on the front convex edge 21. Each express storage chamber 11 is correspondingly installed with a door panel 12, and the door panel 12 is hinged on the hinge hole 211.

[0036] The upper and lower sides of the side panel 4 are respectively against the corresponding layer panel 2, and the upper and lower sides of the side panel 4 are provided with a hook 1 41, and the upper and lower sides of both ends of the layer panel 2 are provided with a connecting groove 1 22, and a hook 2 221 is provided in the connecting groove 1 22, and the hook 1 41 of the side panel 4 can be buckled with the hook 2 221 corresponding to the layer panel 2, and positioning blocks 42 are also provided on the upper and lower sides of the side panel 4, and the positioning blocks 42 are snapped into the connecting groove 1 22. The upper and lower sides of the supporting partition 6 are respectively against the corresponding layer panel 2, and the upper and lower sides of the supporting partition 6 are provided with a hook 3 61, and the upper and lower sides of the middle section of the layer panel 2 are provided with a connecting groove 23, and a hook 4 231 is provided in the connecting groove 23, and the hook 3 61 of the supporting partition 6 can be buckled with the hook 4 231 corresponding to the layer panel 2; positioning blocks 42 are also provided on the upper and lower sides of the supporting partition 6, and the positioning blocks 42 are snapped into the connecting groove 23. The lower side of the back panel 5 is against the layer panel 2 located below, and a plurality of plug-in plates 51 are provided at the lower end of the back panel 5. A plurality of plug-in holes 24 are provided at the rear side of the layer panel 2. The plug-in plates 51 of the back panel 5 are plugged into the plug-in holes 24 of the layer panel 2 located below, and the upper side of the back panel 5 is against the layer panel 2 located above. Two back panels 5 are provided between adjacent layer panels 2, and the two back panels 5 are respectively located on both sides of the supporting partition 6. A plug-in slot 43 is provided on the inner side of the rear end of the side panel 4, and plug-in slots 62 are provided on both sides of the rear end of the supporting partition 6. Plug-in plates 52 are provided on both sides of the back panel 5, and one of the plug-in plates 52 of the back panel 5 is connected to the plug-in slot 43 of the side panel 4, and the other plug-in plate 52 of the back panel 5 is connected to the plug-in slot 62 of the supporting partition 6. The side panel 4 and the layer panel 2 are positioned in the vertical direction and in the length direction by means of hook one 41 and hook two 221, the support partition panel 6 and the layer panel 2 are positioned in the vertical direction and in the length direction by means of hook three 61 and hook four 231, the back panel 5 is fixed by means of a plug-in plate one 51 cooperating with the plug-in hole 24 of the layer panel 2, the plug-in connection of the plug-in plate of the back panel 5 with the side panel 4 and the support partition panel 6 can limit the position of the side panel 4 and the support partition panel 6 in the width direction, thereby realizing a mutually locked and fixed connection between the side panel 4, the layer panel 2, the support partition panel 6 and the back panel 5, without the need for bolts and other connecting parts, the structure is simple, and the express cabinet unit 1 can be quickly assembled.

[0037] Specifically, hook one 41 and hook three 61 are in a "┌" shape, hook one 41 on the upper and lower sides of the side panel 4 is symmetrically arranged, hook three 61 on the upper and lower sides of the support partition 6 is symmetrically arranged, hook two 221 and hook four 231 are in a "┘" shape, hook two 221 at the upper and lower positions are symmetrically arranged, hook four 231 at the upper and lower positions, when in use, hook one 41 of the side panel 4 is first inserted into the connecting groove one 22, at this time hook one 41 is opposite to hook two 221, and then the side panel 4 is pushed to move hook one 41 toward hook two 221, so that the cross bar portion of hook one 41 and the cross bar portion of hook two 221 can overlap in the height direction, and similarly, the support partition 6 is also installed on the side panel 4 in the above manner.

[0038] The layer plate 2 is provided with connection grooves 3 25 on both sides of the connection grooves 2 23, and the connection grooves 3 25 between adjacent layer plates 2 can be installed with partition plates 7. The partition plates 7 are optional and can further separate the express storage chamber 11 into two independent express storage chambers 11. When the partition plates 7 are not provided, the connection grooves 3 25 on the upper side are filled with inserts.

[0039] The top layer plate 2 is fixedly covered with a top cover 8 , and a mounting cavity capable of accommodating a wiring harness and a chip is formed between the top cover 8 and the layer plate 2 , and a plurality of drainage holes are provided on the rear side of the top cover 8 .

[0040] Five groups of reinforcing strips 9 are arranged along the width direction on the lower side of the layer board 2. Each group of reinforcing strips 9 includes two reinforcing strips 91 arranged in parallel and spaced apart. The two groups of reinforcing strips 9 located on both sides form a connection groove 1 22 located on the lower side of the layer board 2. The reinforcing strips 9 located in the middle form a connection groove 23 located on the lower side of the layer board 2. The other two groups of reinforcing strips 9 form a connection groove 3 25 located on the lower side of the layer board 2. The five groups of reinforcing strips 9 can not only strengthen the compressive strength of the layer board 2, but also be used as an installation structure. The lower side of the layer board 2, the inner side of the side board 4, the inner side of the back board 5 and both sides of the supporting partition are all provided with reinforcing ribs 92 to strengthen the structural strength.

[0041] The side panels 4, back panels 5 and supporting partitions 6 are divided into several types according to their heights. The height of the express storage cavity 11 is determined by the heights of the corresponding side panels 4, back panels 5 and supporting partitions 6. In the first embodiment, the side panels 4, back panels 5 and supporting partitions 6 are divided into three types. The three types of heights of the side panels 4, back panels 5 and supporting partitions 6 can be combined to form express storage cavities 11 of three different heights to realize the storage of couriers of different sizes. Different combinations can be used to meet the different requirements for the storage space of express cabinets in different usage areas. Specifically, the express cabinet unit 1 has a total of six layers, among which the express storage cavity 11 on the bottom layer is the highest; the express storage cavity 11 on the second layer is of medium height, and there are four express storage cavities 11 on the second layer, that is, two partition plates 7 are provided on both sides of the supporting partition plate 6, and four door panels 12 are installed to correspond to the four express storage cavities 11; the express storage cavities 11 on the third to sixth layers are the smallest in height, among which two express storage cavities 11 are used on the third to fifth layers, and there are four express storage cavities 11 on the sixth layer, that is, two partition plates 7 are provided on both sides of the supporting partition plate 6, and four door panels 12 are installed to correspond to the four express storage cavities 11.

[0042] Each layer board 2 corresponds to two express storage cavities 11, and the length of the express storage cavity 11 needs to match the large parcel, that is, the length of a single express storage cavity 11 is generally between 40cm and 60cm, and the length of the layer board 2 corresponding to the two express storage cavities 11 is between 80m and 120cm. The longer length of the layer board 2 greatly increases the aspect ratio of the express cabinet unit 1. The single express cabinet unit 1 is not easy to shake in the length direction, making the structure of the single express cabinet unit 1 more stable; adjacent layer boards 2 are supported by a back panel 5, two side panels 4 and a supporting partition board 6, and can be assembled layer by layer by building blocks when in use. The structure is simpler and the assembly is more convenient. Express cabinet units 1 of different heights can be assembled according to actual needs, and the scope of application is wider.

[0043] When the structure of the express cabinet unit 1 is stable, the overall structure of the combined express cabinet can be ensured to be stable only by connecting the bottom plates 3 of the express cabinet units 1. The structure is simple and no additional structural reinforcement is required, so the combined express cabinet can be quickly built.

[0044] Embodiment 2

[0045] The structure and principle of this embodiment are basically the same as those of the first embodiment, except that the side panels and the layer panels are fixedly connected via a snap-fit ​​structure, and the supporting partitions and the layer panels are fixedly connected via a snap-fit ​​structure.

[0046] Embodiment 3

[0047] The structure and principle of this embodiment are basically the same as those of the first embodiment, except that a positioning protrusion is provided on one side surface of the base plate, and a positioning recess is provided on the other side surface of the base plate. The positioning protrusion and the positioning recess are a male and female buckle structure, that is, the positioning protrusion is a downward plug-in structure, and the positioning recess is an upward slot structure.

[0048] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A courier cabinet unit, comprising a plurality of layers (2), characterized in that: A plurality of the layer boards (2) are arranged in layers up and down, the layer boards (2) are rectangular, a back board (5) and two side boards (4) are provided between adjacent layer boards (2), the two side boards (4) are respectively connected to the two sides of the adjacent layer boards (2), the back board (5) is connected to the rear side of the adjacent layer boards (2), and a supporting partition (6) is provided between the adjacent layer boards (2), the supporting partition (6) divides the space between the adjacent layer boards (2) into two express storage chambers (11), and each express storage chamber (11) is correspondingly provided with a door panel (12).

2. The express cabinet unit according to claim 1, characterized in that: The upper and lower side surfaces of the side panel (4) are respectively in contact with the corresponding layer panel (2); the upper and lower side surfaces of the side panel (4) are both provided with a hook (41); the upper and lower sides of both ends of the layer panel (2) are both provided with a connecting groove (22); a hook (221) is provided in the connecting groove (22); the hook (41) of the side panel (4) can be buckled with the hook (221) corresponding to the layer panel (2).

3. The express cabinet unit according to claim 2, characterized in that: Positioning blocks (42) are also provided on the upper and lower side surfaces of the side plate (4), and the positioning blocks (42) are snapped into the first connecting groove (22).

4. The express cabinet unit according to claim 1, 2 or 3, characterized in that: The upper and lower side surfaces of the supporting partition (6) are respectively abutted against the corresponding layer plate (2), and the upper and lower side surfaces of the supporting partition (6) are both provided with hook three (61), and the upper and lower sides of the middle section of the layer plate (2) are both provided with connecting groove two (23), and the connecting groove two (23) is provided with hook four (231), and the hook three (61) of the supporting partition (6) can be buckled with the hook four (231) corresponding to the layer plate (2).

5. The express cabinet unit according to claim 1, 2 or 3, characterized in that: The lower side surface of the back panel (5) abuts against the layer panel (2) located below, a plurality of plug-in boards (51) are provided at the lower end of the back panel (5), a plurality of plug-in holes (24) are provided at the rear side of the layer panel (2), the plug-in boards (51) of the back panel (5) are plugged into the plug-in holes (24) of the layer panel (2) located below, and the upper side surface of the back panel (5) abuts against the layer panel (2) located above.

6. The express cabinet unit according to claim 5, characterized in that: Two back panels (5) are provided between adjacent layer panels (2), and the two back panels (5) are respectively located on both sides of the supporting partition (6); a plug-in slot 1 (43) is provided on the inner side of the rear end of the side panel (4), and plug-in slots 2 (62) are provided on both sides of the rear end of the supporting partition (6); plug-in boards 2 (52) are provided on both sides of the back panel (5); one of the plug-in boards 2 (52) of the back panel (5) is connected to the plug-in slot 1 (43) of the side panel (4), and the other plug-in board 2 (52) of the back panel (5) is connected to the plug-in slot 2 (62) of the supporting partition (6).

7. The express cabinet unit according to claim 4, characterized in that: The layer plate (2) is provided with connection grooves (25) on both sides of the upper and lower sides of the connection grooves (23), and the connection grooves (25) between adjacent layer plates (2) can be used to install partition plates (7).

8. The express cabinet unit according to claim 1, 2 or 3, characterized in that: A front convex edge (21) is protruding from the middle of the front side of the layer board (2), and a plurality of hinge holes (211) are formed on the front convex edge (21).

9. The express cabinet unit according to claim 1, 2 or 3, characterized in that: A top cover (8) is fixed on the layer plate (2) located at the top, and a mounting cavity is formed between the top cover (8) and the layer plate (2).

10. A combined express cabinet, comprising at least two express cabinet units (1) according to any one of claims 1 to 9, wherein the lowermost layer (2) in the express cabinet unit (1) is a bottom plate (3), characterized in that: A positioning protrusion (31) is provided on one side surface of the bottom plate (3), and a positioning recess (32) is provided on the other side surface of the bottom plate (3); the positioning protrusion (31) of one bottom plate (3) in adjacent express cabinet units (1) is inserted into the positioning recess (32) of the other bottom plate (3).

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