shelf

Abstract

The objective is to provide a shelf that is lightweight, rigid, and easy to handle during transport and assembly by using metal support columns with a square cross-section, made from sheet metal formed by bending metal plates. [Solution] A shelf is provided in which metal support columns 1 with a square cross-section are placed at the four corners, and the support columns 1 are fixed to shelves 2A and 2B via mounting brackets, wherein the support column 1 is made by welding together a first sheet metal member 11 with a square cross-section and one corner open, and a second sheet metal member 12 with an L-shaped cross-section having two faces that are aligned with the two faces on the side of the first member 11 where the corner is open.

Description

Technical Field

[0001] The present invention relates to a metal shelf used in offices and the like.

Background Art

[0002] Conventionally, as a shelf used in offices and the like, a rigid structure has been widely used in which columns are arranged at the four corners and the columns are fixed to a shelf board (including a top board; the same applies hereinafter in this specification) via mounting brackets.

[0003] In addition, it has also been proposed to use a metal column having a square cross-sectional shape for the columns of the shelf (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] By the way, as a metal column having a square cross-sectional shape, in addition to a square pipe, there is a sheet metal column formed by bending a metal plate disclosed in Patent Document 1. However, in order to increase the rigidity, it is necessary to use a material with a large plate thickness, which increases the weight and makes it difficult to handle in transportation and assembly.

[0006] In addition, as a fixing means between a metal column having a square cross-sectional shape and a shelf board, various methods have been put into practical use, but there has been a demand for a simple, rigid, and highly designed one.

[0007] The present invention addresses the above-mentioned problems and aims to provide a shelf that is lightweight, rigid, and easy to handle during transportation and assembly by using metal support columns with a square cross-section made of sheet metal formed by bending metal plates.

[0008] Furthermore, a second objective of the present invention is to provide a shelf that is simple in structure, rigid, and aesthetically pleasing by improving the means of fixing the metal support column, which has a square cross-sectional shape, to the shelf board. [Means for solving the problem]

[0009] To achieve the first objective described above, the present invention provides a shelf in which metal support columns with a square cross-section are arranged at the four corners, and the support columns are fixed to the shelf board via mounting brackets, characterized in that the support columns consist of a first sheet metal member with a square cross-section having one corner open, and a second sheet metal member with an L-shaped cross-section having two faces that are aligned with the two faces on the side of the first member where the corner is open, which are welded together to form a single unit.

[0010] In this case, stepped portions can be formed on the two surfaces of the second member so that the surfaces of the two surfaces on the side where the corner of the first member is open become flush, and the leading edges of the two surfaces of the second member can be bent so that they align with the surface on the side where the corner of the first member is open and the surface adjacent thereto.

[0011] Furthermore, in order to achieve the second objective described above, the shelf of the present invention has the support columns adjacent to The support columns are arranged so that their corners face each other, and the chamfered corners of the shelves are fixed to the surface of the columns by bolts screwed into the columns.

[0012] In this case, the shelf board may consist of a shelf support member having chamfered edges on all four corners and locking portions formed on the raised surfaces of the chamfered corners for securing bolts, and a shelf surface member attached to the upper surface of the shelf support member.

[0013] Furthermore, the support columns can be shared between adjacent shelves. [Effects of the Invention]

[0014] According to the shelf of the present invention, the support column is made by welding together a first sheet metal member with a square cross-section and one corner open, and a second sheet metal member with an L-shaped cross-section having two faces that align with the two faces on the side of the first member with the open corner, thereby providing a shelf that is lightweight, rigid, and easy to handle during transportation and assembly, while using sheet metal formed by bending metal plates.

[0015] Furthermore, according to the shelf of the present invention, by arranging the support columns so that the corners of adjacent support columns face each other, and fixing the chamfered corners of the shelves to the surface of the support columns via bolts screwed into the columns, it is possible to provide a shelf with a simple structure, rigidity, and excellent design. [Brief explanation of the drawing]

[0016] [Figure 1] This is a front view showing one embodiment of the shelf of the present invention. [Figure 2] This is a disassembled perspective view of the shelf. [Figure 3] In the explanatory diagram for the shelf's support columns, (a) is an assembled perspective view, (b) is an assembled perspective view of the sheet metal member, (c) is an exploded perspective view of the sheet metal member, (d) is an assembled cross-sectional view of the sheet metal member, and (e) is an exploded cross-sectional view of the sheet metal member. [Figure 4] The explanatory diagram for the shelf board of the shelf unit includes (a) an assembled perspective view, (b) an exploded perspective view, (c) an assembled cross-sectional view, and (d) an exploded cross-sectional view. [Figure 5] This is an explanatory diagram showing the fixing structure between the support columns and shelves of the shelf. [Figure 6] This is a plan view showing how multiple of these shelves would look when arranged in a series.

Best Mode for Carrying Out the Invention

[0017] Hereinafter, embodiments of the shelf of the present invention will be described based on the drawings.

[0018] Figs. 1 to 5 show an embodiment of the shelf of the present invention. This shelf is a shelf in which metal columns 1 having a square cross-sectional shape are arranged at the four corners, and the columns 1 are fixed to shelf boards 2A and 2B via mounting brackets. The column 1 is formed by welding and integrating a first member 11 made of sheet metal having a square cross-sectional shape with one corner open and a second member 12 made of sheet metal having an L-shaped cross-sectional shape and having two surfaces along two surfaces on the side where the corner of the first member is open.

[0019] The number of shelf boards 2A and 2B of the shelf is arbitrary as shown in Figs. 1(a) to (d). Specifically, it can range from two shelf boards 2A (one of which is the top board) and one shelf board (bottom board) 2B shown in Fig. 1(a) to five shelf boards 2A (one of which is the top board) and one shelf board (bottom board) 2B shown in Fig. 1(d), and the number can be increased or decreased according to the height dimension etc. of the shelf.

[0020] As shown in Figs. 2 to 3, the column 1 integrates the first member 11 and the second member 12 by welding, for example , spot welding, and a top cap 13 is provided at the upper end, and an adjuster 15 is provided at the lower end via an adjuster sleeve 14. In addition, step portions 12a are formed on the two surfaces of the second member 12 so that the surfaces of the two surfaces on the side where the corner of the first member 11 is open are flush, and the tip portions 12b of the two surfaces of the second member 12 are bent so as to follow the surface on the side where the corner of the first member 11 is open and the surface continuous thereto. Also, screw holes 11a and 12c for attaching bolts 3, which are mounting brackets, are formed at the positions where the shelf boards 2A and 2B of the first member 11 and the second member 12 are fixed, and nuts 16 are welded to the back side thereof. The first member 11 and the second member 12 constituting the support column 1 are made by sheet metal processing using steel plates with a thickness of 1 to 3 mm (1.2 mm in this embodiment) (in this embodiment, cold-rolled steel plates (SPCC)) to obtain a support column 1 with a rectangular cross-sectional shape with sides of 25 to 50 mm (36 mm in this embodiment).

[0021] This shelf is constructed by welding together a first sheet metal member 11 and a second sheet metal member 12, thereby providing a lightweight, rigid shelf that is easy to handle during transport and assembly, even when using sheet metal formed by bending metal plates.

[0022] By the way, in this shelf, the metal support columns 1, which have a square cross-section, are arranged so that the corners of adjacent support columns 1 face each other, and the corners of the chamfered shelves 2A and 2B are fixed to the surface of the support columns 1 by bolts 3, which are mounting brackets screwed into the support columns 1.

[0023] Therefore, the shelves 2A and 2B consist of shelf support members 21 and 23, each having chamfered corners and locking portions (including keyholes for inserting the bolts 3) 21b and 23b formed on the raised surfaces 21a and 23a of the chamfered corners, and shelf surface members 22 and 24 attached to the upper surfaces of the shelf support members 21 and 23. Here, the rising surfaces 21a and 23a, which form the locking portions 21b and 23b, are constructed by welding corner support members 21c and 23c, which are made of a separate material, to the shelf support members 21 and 23. Furthermore, as shown in Figure 5, a hex socket head bolt (cap bolt) can be used for bolt 3. With bolt 3 temporarily fastened to the support column 1, the locking parts 21b and 23b of the shelves 2A and 2B are attached to bolt 3, and then bolt 3 is fully tightened to fix the shelves 2A and 2B to the support column 1.

[0024] The shelf support members 21, 23 and shelf surface members 22, 24 that constitute the shelf boards 2A, 2B are made of sheet metal processed using steel plates with a thickness of 0.5 to 2 mm (in this embodiment, the shelf support members 21, 23 are 0.8 mm thick, and the shelf surface members 22, 24 are 0.7 mm thick) (in this embodiment, cold-rolled steel plates (SPCC)). This process is used to obtain the shelf boards 2A, 2B that define the planar shape of the shelf.

[0025] The rigidity of the shelf support members 21, 23 and shelf surface members 22, 24 that constitute the shelf boards 2A, 2B can be increased by forming raised edges 21d, 23d or lowered edges 22a, 24a that are bent in a U-shape cross-section around the entire circumference, or by providing a crossbar member 22b with a hat-shaped cross-section. Furthermore, the rising edge 23d of the shelf support member 23 is formed to support the falling edge 24a of the shelf surface member 24 by creating a receiving edge 23e. The base shelf board 2B is designed to accommodate various devices such as electrical outlets, and also has openings in the shelf support member 23 and shelf surface member 24 to allow wiring to be routed out.

[0026] This shelf is constructed by arranging the support columns 1 so that the corners of adjacent support columns 1 face each other, and by fixing the chamfered corners of the shelves 2A and 2B to the surface of the support columns 1 via bolts 3 screwed into the columns 1. This provides a shelf with a simple structure, rigidity, and excellent design.

[0027] Furthermore, this shelf can be installed as a single, independent unit, or multiple shelves can be arranged in series or in a key-shaped configuration. In this case, as shown in Figure 6, the support column 1 can be shared between adjacent shelves.

[0028] The shelf of the present invention has been described above based on its embodiments. However, the present invention is not limited to the configuration described in the above embodiments, and its configuration can be modified as appropriate without departing from the spirit of the invention. [Industrial applicability]

[0029] The shelf of the present invention uses metal support columns with a square cross-section, made of sheet metal formed by bending metal plates. This provides a shelf that is rigid yet lightweight and easy to handle during transport and assembly. Furthermore, by improving the means of fixing the square-shaped metal support columns to the shelves, it is possible to provide a shelf with a simple structure, rigidity, and excellent design, making it widely applicable to metal shelving used in offices and other similar settings. [Explanation of symbols]

[0030] 1 post 11. First Member 11a Screw hole 12 Second Member 12a Stepped section 12b Tip 12c screw hole 13 Top cap 14 Adjustable Sleeves 15 adjuster 16 nuts 2A shelf board 2B shelf board 21 Shelf support member 21a Rising surface 21b Locking part 21c Corner support member 21d Rising edge 22 Shelf member 22a Downward edge 22b Crossbar member 23 Shelf support members 23a Rising surface 23b Locking part 23c Corner support member 23d rising edge 23e Receiving edge 24 Shelf member 24a Downward edge 3 bolts

Claims

1. A shelf having metal support columns with a square cross-section placed at the four corners, and the support columns fixed to the shelf board via mounting brackets, characterized in that the support columns are made by welding together a first sheet metal member with a square cross-section having one corner open, and a second sheet metal member with an L-shaped cross-section having two faces that are aligned with the two faces on the side of the first member where the corner is open.

2. The shelf according to claim 1, characterized in that stepped portions are formed on two surfaces of the second member so that the surfaces of the two surfaces on the side where the corner of the first member is open become flush, and the leading edges of the two surfaces of the second member are bent so that they are aligned with the surface on the side where the corner of the first member is open and the surface adjacent thereto.

3. The shelf according to claim 1 or 2, characterized in that the support columns are arranged so that the corners of adjacent support columns face each other, and the corners of the chamfered shelves are fixed to the surface of the support columns by bolts screwed into the support columns.

4. The shelf according to claim 3, characterized in that the shelf board comprises a shelf support member having four corners beveled and a locking portion formed on the rising surface of the beveled corners for engaging bolts, and a shelf surface member attached to the upper surface of the shelf support member.

5. The shelf according to claim 3, characterized in that the support column is shared between adjacent shelves.

Images