A four-sided, detachable cardboard box with metal posts joined together as a single unit.

Abstract

To provide a four-sided, separable cardboard box with integrated metal posts that eliminates the need for workers to fasten and disassemble post angles or brackets to reinforce the corners of cardboard boxes for transporting and storing goods, or that drastically reduces the number of work steps involved. [Solution] The four-sided separate cardboard box with integrally coupled metal posts according to the present invention includes metal posts coupled to each of the four corners of the top of the pallet, and front and rear sleeves and side sleeves to which the metal posts are integrally coupled to each of the two sides. The metal posts are manufactured with both side portions widened at a predetermined angle relative to the rear portion, and after housing each end of the front and rear sleeves or the side sleeves inside, the sides are compressed relative to the rear portion and integrally coupled. The side portions include a plurality of projections that protrude inward at predetermined intervals along the length of the side portion, and when the side portion is compressed, the side projections are inserted into and coupled to the inside of the front and rear sleeves or the side sleeves.

Description

Technical Field

[0001] The present invention relates to a four-sided separable cardboard box in which metal material posts are integrally joined. More specifically, it is provided on a bottom pallet and houses and transports amorphous articles such as rubber, plastic materials, and other fluids that do not have a fixed shape inside. It relates to a four-sided separable cardboard box in which metal material posts are integrally joined, which is externally housed by assembly, transported safely and firmly with enhanced binding force, and enables easy storage and removal of articles by simple disassembly.

Background Art

[0002] [[ID=ll]] Recently, logistics distribution has become active, and packaging boxes for transportation according to the characteristics of articles are highly specialized in terms of price rationality, packaging efficiency, and impact on the environment. Accordingly, quality standards have been strengthened. In the past, after packaging articles using packaging boxes made of wood materials, transportation and storage were mainly carried out. Recently, cardboard boxes as presented in Patent Documents 1 and 2 described below are widely used due to epidemic prevention problems, waste treatment problems, etc.

[0003] [[ID=I6]]However, when loading articles, the strength of the cardboard box decreases and a problem of support force occurs, and in the transportation and storage processes, the corner parts of the cardboard box are damaged, resulting in problems such as exposure of articles to the outside, inflow of foreign substances, and damage of articles. To solve this, as in Patent Documents 1 and 2, reinforcing members such as various post angles and brackets for strength reinforcement or mutual binding are generally used together on the side surfaces, bottom surfaces, and upper surfaces of the cardboard box.

[0004] However, the strength reinforcement work for the corner parts of the cardboard box using such post angles and brackets requires the operator to perform fastening and disassembly operations one by one between the four-sided separable cardboard boxes and between the four-sided separable cardboard boxes and pallets, etc. Therefore, there is a problem that a considerable amount of time and effort are required before and after loading the articles, which increases the transportation time and cost of the articles.

Prior Art Documents

Patent Documents

[0005] [Patent Document 1] Korean Registered Patent Publication No. 10-1440881 [Patent Document 2] Korean Registered Patent Publication No. 10-1456435 [Overview of the Initiative] [Problems that the invention aims to solve]

[0006] Therefore, the problem that the present invention aims to solve is to provide a four-sided detachable cardboard box with integrally connected metal posts that solves the aforementioned problems and eliminates the need for workers to fasten and disassemble post angles, brackets, etc., to reinforce the corners of the cardboard box for transporting and storing goods, or that drastically reduces the number of work steps.

[0007] Another problem that the present invention aims to solve is to provide a four-sided separable cardboard box with integrally connected metal posts that solves the aforementioned problems and allows workers to easily fasten and disassemble post angles, brackets, etc., for reinforcing the corners of the cardboard box for transporting and storing goods. [Means for solving the problem]

[0008] The four-sided separate type cardboard box with integrally coupled metal posts according to the present invention includes metal posts coupled to each of the four corners of the top of the pallet, and front and rear sleeves and side sleeves to which the metal posts are integrally coupled to each of the two sides. The metal posts are manufactured with both side portions flared at a predetermined angle relative to the rear portion, and after housing each end of the front and rear sleeves or the side sleeves inside, the front and rear sleeves or the side sleeves are compressed, causing the side portions to narrow relative to the rear portion and be integrally coupled. The side portions include a plurality of projections that protrude inward at predetermined intervals along the length, and when the side portions narrow due to compression, these projections are inserted into and coupled to the inside of the front and rear sleeves or the side sleeves.

[0009] The pallet's top plate may further include front and rear guide angles and side guide angles, which are joined to the front and rear surfaces and the peripheral edges of the side surfaces by known fastening means such that fastening holes are exposed to the outside.

[0010] The metal post may further include a lower projection that protrudes outward from the lower part of the side surface and is coupled to the fastening hole by protruding outward from the inside, thereby ensuring mutual fastening between the lower part of the metal post and the pallet.

[0011] The metal post may further include bracket insertion portions provided as a plurality of projections that protrude outward and upward at predetermined intervals along the length of the side surface.

[0012] The system may further include a post fixing bracket into which the bracket insertion portion is inserted, for fixing and connecting the intermediate portion between adjacent metal posts.

[0013] The post fixing bracket is provided as a connecting piece that is bent vertically at the bent portion, and fastening grooves are formed at the lower part of the portions on both sides of the bent portion, into which the bracket insertion portion can be inserted and connected.

[0014] The metal post may further include bolt insertion portions formed on the upper part of each side portion, and may further include an upper fixing member whose one end is rotatably connected to the bolt insertion portion.

[0015] The upper fixing member may include an upper surface portion, side portions extending from the lower part of each side of the upper surface portion and having bolt fastening portions corresponding to the bolt insertion portions, and a front portion that is connected at one end to the upper surface portion and the side portions, respectively, to close the front end.

[0016] The upper fixing member can rotate so that its front portion covers the side end of the metal post connected to the adjacent front / rear or side sleeve, thereby fixing the upper part between adjacent metal posts.

[0017] The upper portion may further include a downward projection that protrudes downward and is inserted and coupled to the upper inner surface of an adjacent front / rear or side sleeve by rotation. [Effects of the Invention]

[0018] As described above, the four-sided separable cardboard box with integrally connected metal posts according to the present invention is supplied with metal posts having a predetermined strength integrally connected to the side corners of the sleeve of the four-sided separable cardboard box by a press method. This eliminates the need for workers to individually connect each metal post to the side corners of the sleeve of the four-sided separable cardboard box for the transportation and storage of goods, thus providing the advantageous effect of dramatically reducing the number of work steps in packaging goods.

[0019] Furthermore, the four-sided separable cardboard box with integrally connected metal posts according to the present invention has the advantageous effect of making it very easy to connect and separate adjacent metal posts in the four-sided separable cardboard box with integrally connected metal posts, as well as between the metal posts and the pallet and upper cap. [Brief explanation of the drawing]

[0020] [Figure 1] This is a perspective view of a four-sided separable paper box in which metal posts according to the present invention are integrally joined. [Figure 2] This is an exploded perspective view of a four-sided separable cardboard box in which metal posts according to the present invention are integrally connected. [Figure 3] Figure 1 is a perspective view of a four-sided separable paper box in which the metal post according to the present invention is integrally joined, with the upper cap and upper frame, which are essential parts of the box, removed. [Figure 4] This is a perspective view of the front and rear sleeves, which are a key part of a four-sided separate type cardboard box to which metal posts according to the present invention are integrally attached. [Figure 5] The perspective view of a side sleeve which is a main part of a four-sided separated cardboard box where a metal post according to the present invention is integrally coupled. [Figure 6] The perspective view of a metal post before being integrally coupled with a front and rear surface sleeve or a side sleeve. [Figure 7] The plan view of a metal post before being integrally coupled with a front and rear surface sleeve or a side sleeve. [Figure 8] The plan view showing the state before integrally coupling by a pressing process after inserting the ends of the front and rear surface sleeves and the side sleeve inside the metal post. [Figure 9] The plan view showing the state after integrally coupling by a pressing process after inserting the ends of the front and rear surface sleeves and the side sleeve inside the metal post. [Figure 10] The perspective view showing the state where front and rear surface guide angles and side guide angles which are main parts of a four-sided separated cardboard box where a metal post according to the present invention is integrally coupled are respectively coupled to one end of the peripheral edge of the upper part of a wooden pallet. [Figure 11] The side view showing the state where front and rear surface guide angles and side guide angles which are main parts of a four-sided separated cardboard box where a metal post according to the present invention is integrally coupled are respectively coupled to one end of the peripheral edge of the upper part of a wooden pallet. [Figure 12] The perspective view of front and rear surface guide angles which are each a main part of a four-sided separated cardboard box where a metal post according to the present invention is integrally coupled. [Figure 13] [[ID=已修正]]The perspective view of side guide angles which are each a main part of a four-sided separated cardboard box where a metal post according to the present invention is integrally coupled. [Figure 14] The enlarged view of the "B" region of FIG. 1 showing the lower coupling state between front and rear surface guide angles and side guide angles which are main parts of a four-sided separated cardboard box where a metal post according to the present invention is integrally coupled and the metal post. [Figure 15]This is an enlarged view of area "C" in Figure 3, showing the state before upper fixing between the front and rear sleeves and the side sleeves, which are a key part of a four-sided separate type cardboard box in which metal posts are integrally joined according to the present invention. [Figure 16] This is an enlarged view of area "C" in Figure 3, showing the state after the upper part is fixed between the front and rear sleeves and the side sleeves, which are a key part of a four-sided separate type paper box in which metal posts are integrally joined according to the present invention. [Figure 17] This is a perspective view of the upper sleeve fixing member, which is a key part of a four-sided separable paper box to which metal posts according to the present invention are integrally attached. [Figure 18] This is a front view of the upper sleeve fixing member, which is a key part of a four-sided separate type cardboard box to which metal posts according to the present invention are integrally connected. [Figure 19] This is an enlarged view of area "A" in Figure 1, showing the state before the post fixing bracket is fastened between adjacent metal posts, which is a key part of a four-sided separable cardboard box in which metal posts according to the present invention are integrally joined. [Figure 20] Figure 1 is an enlarged view of area "A" showing the state after a post fixing bracket has been fastened between adjacent metal posts, which is a key part of a four-sided separable cardboard box in which metal posts according to the present invention are integrally joined. [Figure 21] This is a perspective view of a post fixing bracket, which is a key component of a four-sided separate type cardboard box to which metal posts according to the present invention are integrally attached. [Figure 22] This is an assembly perspective view illustrating the sequential assembly sequence of a four-sided separable cardboard box in which metal posts are integrally joined according to the present invention. [Figure 23] This is an assembly perspective view illustrating the sequential assembly sequence of a four-sided separable cardboard box in which metal posts are integrally joined according to the present invention. [Figure 24] This is an assembly perspective view illustrating the sequential assembly sequence of a four-sided separable cardboard box in which metal posts are integrally joined according to the present invention. [Modes for carrying out the invention]

[0021] Specific details relating to embodiments of the present invention are included in the detailed description and drawings.

[0022] The advantages and features of the present invention, and methods for achieving them, will become clearer with reference to the embodiments described below in detail with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but can be realized in a variety of different forms, and these embodiments are provided merely to complete the disclosure of the present invention and to fully inform those who are ordinary skill in the art to which the invention pertains, and the present invention is defined only by the scope of the claims.

[0023] Throughout this specification, the same reference numerals refer to the same components. Embodiments described herein are explained with reference to ideal perspective views, plan views, enlarged views, and front views of the present invention.

[0024] The following describes in detail the configuration of the four-sided separate type cardboard box in which the metal post according to the present invention is integrally connected, with reference to the attached Figures 1 to 21.

[0025] Figures 1 and 2 show a combined perspective view and an exploded perspective view of a four-sided separable cardboard box in which the metal posts according to the present invention are integrally joined, respectively; Figure 3 shows a combined perspective view of the four-sided separable cardboard box in Figure 1 with the upper cap and upper frame, which are essential parts of the box, removed; Figures 4 and 5 show perspective views of the front and rear sleeves and side sleeves, which are essential parts of the four-sided separable cardboard box in which the metal posts according to the present invention are integrally joined, respectively; and Figures 6 and 7 show the metal material in its state before being integrally joined with the front and rear sleeves or side sleeves, respectively. Figures 8 and 9 are perspective and plan views of the post, respectively, showing the state before and after the ends of the front and rear sleeves and side sleeves are inserted into the inside of the metal post and then joined together by a pressurizing process. Figures 10 and 11 are perspective and side views, respectively, showing the state in which the front and rear guide angles and side guide angles, which are essential parts of the four-sided separate type cardboard box to which the metal post according to the present invention is joined together, are joined to one end of the upper peripheral edge of the wooden pallet. Figures 12 and 13 show the state in which the metal post according to the present invention is joined together. Figure 14 is a perspective view of the front and rear guide angles and side guide angles, which are essential parts of the four-sided detachable cardboard box. Figure 14 is an enlarged view of area "B" in Figure 1, showing the lower connection state between the front and rear guide angles and side guide angles, which are essential parts of the four-sided detachable cardboard box to which the metal post according to the present invention is integrally attached, and the metal post. Figures 15 and 16 show the upper fixing front and rear states between the front and rear sleeves and side sleeves, respectively, which are essential parts of the four-sided detachable cardboard box to which the metal post according to the present invention is integrally attached, as shown in "C" in Figure 3. Figures 17 and 18 are enlarged views of the "A" region, a perspective view and a front view of the sleeve upper fixing member, which is a key part of the four-sided detachable cardboard box to which metal posts according to the present invention are integrally connected, respectively; Figures 19 and 20 are enlarged views of the "A" region in Figure 1, showing the state before and after fastening a post fixing bracket between adjacent metal posts, which is a key part of the four-sided detachable cardboard box to which metal posts according to the present invention are integrally connected, respectively; and Figure 21 is a perspective view of the post fixing bracket, which is a key part of the four-sided detachable cardboard box to which metal posts according to the present invention are integrally connected.

[0026] As shown in Figures 1 to 3, the four-sided separate type cardboard box with integrally connected metal posts according to the present invention includes a pair of front and rear guide angles 3 and side guide angles 4 connected to the four corners of the top of the pallet 2, front and rear sleeves 5 and side sleeves 6 to which metal posts 7 are integrally connected on both sides, a post fixing bracket 8, an upper fixing member 9, an upper cap 10, an upper frame 11, and a bottom pad 12.

[0027] Pallet 2 consists of a bottom board 2-1, middle corner timbers 2-2, and top boards 2-3. The materials used are usually wood, but lightweight metal or synthetic resin materials may also be used.

[0028] As shown in Figures 11 to 14, the front and rear guide angles 3 and the side guide angles 4 are provided in the shape of elongated rods, with fastening holes 3-1 and 4-1 formed at both ends, and are equipped with strength-reinforcing embossing 3-2 and 4-2 to match the length of the front and rear and side surfaces of the top plate 2-3 of the pallet 2. They are fastened to the periphery of the front and rear and side surfaces of the top plate 2-3 of the pallet 2 by known fastening means such as nails, bolts, or adhesive means, so that the fastening holes 3-1 are exposed to the outside.

[0029] Two front and rear sleeves 5 and two side sleeves 6 are provided to form the sides of the cardboard box, and the four sides are separated. As shown in Figures 8 and 9, corrugated connecting parts are interconnected between multiple cardboard sheets to create a lightweight corrugated cardboard that exhibits a predetermined thickness and strength.

[0030] The metal post 7 is made of a material such as steel having a predetermined strength and includes a side projection 7-1, a bracket insertion part 7-2, a strength-reinforcing emboss 7-3, a lower projection 7-4, and a bolt insertion part 7-5. As shown in Figures 6 and 7, it is manufactured by cutting, punching, bending, or other known processing methods of a metal plate material having a predetermined thickness, with both side portions bent at an angle α greater than 90° relative to the rear portion. In this embodiment, it was formed at an angle of 101°. Subsequently, as shown in Figures 8 and 9, the metal post 7 is fitted with both ends of the front and rear sleeves 5 or the side sleeves 6, respectively, and then narrowed and integrally joined to the rear portion by a press molding process so that both side portions are at a 90° angle relative to the rear portion.

[0031] The side projections 7-1 are multiple projections that are attached to the inside of the side surface at predetermined intervals along the length of both side surfaces by means of a pressurizing means or the like. When the side surface is narrowed by the pressurizing method, the side projections 7-1 are inserted and bonded to the inside of the front and rear sleeves 5 and the side sleeves 6, as shown in Figure 9, thereby exerting a fixed bonding force between them and the sleeves 5 and 6.

[0032] The bracket insertion portion 7-2 consists of multiple projections that are attached to the outside of the side surface at predetermined intervals along the length of both sides by means of a pressurizing mechanism or the like, and are inserted and coupled to the post fixing bracket 8 shown in Figure 21, which will be described later, to fix and connect the intermediate portion between adjacent metal posts 7.

[0033] The strength-reinforcing embossing 7-3 is formed along the length of both sides to reinforce the strength of the metal post 7.

[0034] The lower protrusion 7-4 is a projection that extends outward from the lower part of the side surface, and as shown in Figure 14, it protrudes outward from the inside of the fastening holes 3-1 and 4-1 and connects to them, ensuring mutual fastening between the lower part of the metal post 7 and the pallet 2.

[0035] The bolt insertion sections 7-5 are formed on the upper part of both side sections by drilling means, and the upper fixing member 9, described later, is rotatably connected to them.

[0036] By mutually bonding the pre-manufactured metal post 7 and sleeves 5 and 6 through a pressure pressing process, and by providing four-sided separable sleeves 5 and 6 in which the metal post 7 is integrally bonded, the present invention offers a unique effect: it eliminates the inconvenience of workers having to cumbersomely tie the metal post 7 to the sleeves 5 and 6 when packaging paper boxes.

[0037] The post fixing bracket 8 is a connecting piece that is bent vertically at the bent portion, and fastening grooves 8-1 are formed at the bottom of the portions on both sides of the bent portion, and are interconnected from top to bottom to the bracket insertion portion 7-2 of adjacent metal posts 7 as shown in Figures 19 and 20, ensuring the binding of the intermediate portions between adjacent metal posts 7.

[0038] As shown in Figures 17 and 18, the upper fixing member 9 includes an upper surface portion 9-1 on which a downward projection 9-2 is formed, side portions 9-3 extending from the lower part of each side of the upper surface portion 9-1 and on which bolt fastening portions 9-4 are formed, and a front portion 9-5 that contacts the upper surface portion 9-1 and the side portions 9-3 respectively and closes the front end.

[0039] The bolt fastening portion 9-4 fastens the bolt 9-6 while aligned with the bolt insertion portion 7-5. Since the bolt 9-6 penetrates the inside of the front and rear sleeves 5 (or side sleeves) during insertion, the upper fixing member 9 becomes interconnected with the front and rear sleeves 5 and the metal post 7. However, since the upper fixing member 9 is rotatable, rotation causes the front portion 9-5 to cover the side end of the metal post 7 connected to the adjacent side sleeve 6, as shown in Figures 15 and 16, thereby fixing the upper part between adjacent metal posts 7. At this time, the lower projection 9-2 is inserted and connected to the upper inside of the side sleeve 6, further increasing the upper fixing force between adjacent metal posts 7 and having the effect of preventing arbitrary reverse rotation that would release the binding force.

[0040] When the worker rotates the metal posts in the opposite direction, the upper fixing force between adjacent metal posts 7 can be easily released.

[0041] The upper cap 10 is also made of cardboard material, and the upper frame 11, which is equipped with connecting parts 11-1 and support bars 11-2 to reinforce the corners, can be superimposed to reinforce the strength of the upper part.

[0042] The bottom pad 12 is securely attached to the top plates 2-3 of the pallet 2, and goods are loaded onto it.

[0043] The following describes in detail the assembly method of a four-sided separable cardboard box in which metal posts are integrally joined according to the present invention, with reference to attached Figures 22 to 24.

[0044] Figures 22 to 24 are assembly perspective views illustrating the sequential assembly sequence of a four-sided separable cardboard box in which metal posts according to the present invention are integrally connected.

[0045] First, as shown in Figure 22, the front and rear guide angles 3 and the side guide angles 4 are joined to the periphery of the top plate 2-3 of the pallet 2 using known fastening means. Then, the front and rear sleeves 5 and the side sleeves 6, to which metal posts 7 are integrally joined on both sides, are positioned so that their lower protrusions are housed in the fastening holes 3-1 and their ends overlap. With these positions, the upper fixing member 9 is rotated to fix the upper parts of the front and rear sleeves 5 and the side sleeves 6.

[0046] Subsequently, as shown in Figure 23, the remaining side sleeves 6 are superimposed on the front and rear sleeves 5 in the same manner, and the upper part is further secured using the upper fixing member 9. The bracket insertion part 7-2 is then inserted and fixed into the post fixing bracket 8 to tie together the intermediate parts of the adjacent metal posts 7, and the bottom pad 12 is housed inside.

[0047] Subsequently, as shown in Figure 24, the remaining front and rear sleeves 5 are secured in the same manner, and then the top cap 10 and top frame 11 are positioned at the top. This allows for the assembly of the four-sided separate cardboard box, with the metal posts integrally connected, to be completed very easily, quickly, and conveniently, and also has the unique advantage of being easily disassembled in reverse order.

[0048] As described above, the four-sided split paper box with integrally connected metal posts according to the present invention is supplied with metal posts 7 having a predetermined strength integrally connected to the side corners of the front and rear sleeves 5 and side sleeves 6 of the four-sided split paper box by a press method. Therefore, workers do not have to perform the task of connecting the metal posts 7 one by one to the side corners of the front and rear sleeves 5 and side sleeves 6 of the four-sided split paper box for the transportation and storage of goods. This has the advantageous effect of dramatically reducing the number of work steps in packaging goods.

[0049] Furthermore, the four-sided separable cardboard box in which metal posts are integrally connected according to the present invention has the advantageous effect of making it very easy to connect and separate adjacent metal posts 7 of the four-sided separable cardboard box in which metal posts 7 are integrally connected, as well as between the metal posts and the pallet 2 and upper cap 10.

[0050] Although preferred embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements by those skilled in the art that utilize the basic concepts of the present invention as defined in the claims also fall within the scope of the present invention. [Explanation of Symbols]

[0051] 2 pallets 2-1 Lower plate 2-2 Medium square timber 2-3 Top plate 3 Front and rear guide angles 3-1 Fastening hole 3-2 Strength Reinforcement Embossing 4 Side guide angles 4-1 Fastening hole 4-2 Strength Reinforcement Embossing 5 Front and rear sleeves 6 Side sleeves 7 Metal Post 7-1 Side protrusion 7-2 Bracket insertion section 7-3 Strength Reinforcement Embossing 7-4 Lower protrusion 7-5 Bolt insertion section 8 Post fixing bracket 9 Upper fixing member 9-1 Top part 9-2 Lower protrusion 9-3 Side part 9-4 Bolt fastening section 9-5 Front part 9-6 bolts 10 Top cap 11. Upper frame 11-1 Connection part 11-2 Support bar 12 Bottom pads

Claims

1. The four corners at the top of the pallet are joined together, Metal posts, and, The metal post includes front and rear sleeves and side sleeves, each integrally bonded to both sides of the metal post, The aforementioned metal post is After being manufactured with both side portions flared out at a predetermined angle relative to the rear portion, the front and rear sleeves or the side sleeves are respectively housed inside, and then pressurized, causing both side portions to narrow relative to the rear portion and be joined together as a single unit. A four-sided separable cardboard box in which a metal post is integrally attached, the metal post having a plurality of projections provided on the side surface as projections that protrude inward at predetermined intervals along the length direction, and which are inserted and coupled into the front and rear sleeves or the inside of the side sleeves when the side surface narrows due to the pressure.

2. A four-sided separable cardboard box in which metal posts according to claim 1 are integrally attached, further comprising front and rear guide angles and side guide angles that are attached to the front and rear surfaces and the peripheral edges of the side surfaces of the top plate of the pallet by known fastening means such that fastening holes are exposed to the outside.

3. The aforementioned metal post is A four-sided separable cardboard box in which a metal post is integrally connected, further comprising a lower projection provided as a projection protruding outward from the lower part of the side surface, which protrudes outward from the inside of the fastening hole and is coupled to the lower part of the metal post and the pallet, thereby ensuring mutual fixing between the lower part of the metal post and the pallet, as described in claim 2.

4. The aforementioned metal post is A four-sided separable cardboard box in which metal posts according to claim 1 are integrally connected, further comprising a plurality of bracket insertion parts provided as a plurality of projections that protrude outward and upward at predetermined intervals along the length of the side surface.

5. A four-sided separable cardboard box in which metal posts are integrally connected, further comprising a post fixing bracket into which the bracket insertion portion is inserted and which fixes and connects the intermediate portion between adjacent metal posts, as described in claim 4.

6. The aforementioned post fixing bracket is It is provided as a connecting piece that is bent vertically at the bent portion, and fastening grooves are formed at the lower part of the portions on both sides that sandwich the bent portion. A four-sided separable cardboard box in which the metal post described in claim 5 is integrally attached, with the bracket insertion portion being inserted and coupled into the fastening groove.

7. The aforementioned metal post is It further includes bolt insertion portions formed at the upper part of each side section, A four-sided separable cardboard box in which a metal post is integrally attached, further comprising an upper fixing member whose one end is rotatably connected to the bolt insertion portion, as described in claim 1.

8. The upper fixing member is Top surface and, The upper surface portion extends to the lower part of each side surface, and a side surface portion is formed which a bolt fastening portion corresponding to the bolt insertion portion is formed, A four-sided paper box in which the metal post according to claim 7 is integrally connected, including a front portion which is connected at one end to the upper portion and the side portion, respectively, to close the front end.

9. The upper fixing member is A four-sided separable cardboard box in which metal posts are integrally connected, as described in claim 8, wherein the front portion rotates to cover the side ends of the metal posts connected to adjacent front / rear or side sleeves, thereby fixing the upper part between adjacent metal posts.

10. The aforementioned upper portion is, A four-sided separable cardboard box in which a metal post according to claim 9 is integrally connected, further including a downward projection that protrudes downward and is inserted and coupled to the upper inner surface of adjacent front / rear or side sleeves by rotation.

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