JPH03247857A - Steel floor panel - Google Patents

Abstract

PURPOSE:To increase productivity, by unifying the whole periphery of the top plate and the bottom plate edges of a surface-treated steel plate with pressure tightening and providing a supporting post inside the vertical wall. CONSTITUTION:A top plate 1 and a bottom plate 2 are made from a surface- treatment steel plate by zinc-plating or others. A vertical wall 3 is provided on the periphery of the bottom plate 2 by press forming. And a fastening flange 5 is formed by folding the upper part of the vertical wall 3 and a supporting post 4 is formed to project to the upperface side at the bottom 6 contacting the ground forming the bottom face of the floor panel. Next, the upper part of the supporting post 4 is caulked with pressure by protruding downward the edge of fastening holes 7 of the top plate 1. Next, the four edges of the top plate 1 is fastened with pressure in the flange 5 of the bottom plate 2. In this way, layout of an office can be freely designed with these light panels.

Description

[Detailed description of the invention]

[0001]

[Industrial application field]

The present invention relates to a steel floor panel used as a raised floor. [0002]

[Conventional technology]

Floor panels include aluminum, steel, inorganic layers such as concrete, synthetic resin, and wood. These are formed into a rectangular shape and are laid directly on the floor or supported at a predetermined height by support legs. [0003]

[Problems to be solved by the invention]

Among conventional floor panels, those made of aluminum have the advantage of good finishing accuracy during manufacture, but since the Young's modulus of the material aluminum is approximately 173 that of steel, it is necessary to use iron to obtain strength. The weight has to be the same as that of steel, which increases the cost.Furthermore, since it is manufactured by die-casting machining, productivity is lower than that of steel. [0004] Inorganic panels made of concrete, etc. have excellent fire resistance,
Although it is inexpensive, it is generally weak against shock, so it is not suitable for large panels. Moreover, it is undesirable because it is heavy and difficult to construct and layout, and it is also a heavy object for buildings. Furthermore, there is a drawback that dust and chips occur. [0005] Although synthetic resin and wooden materials have the advantage of being cheap and light, they have poor fire resistance and can easily burn. In addition, because of its weak strength, it has the disadvantage that it is limited to being placed on the floor. [0006] Conventional steel panels weigh about the same as aluminum, are about half as light as concrete-based panels, are strong, have a Young's modulus about three times that of aluminum, and have little deflection. However, according to the conventional manufacturing method that uses welding to increase strength by creating a hollow structure, even if surface-treated steel plates are used to prevent rust, the welded parts will burn and oxidize, causing rust. Ta. For this reason, anti-rust treatment such as painting has become necessary. [0007]

[Means for Solving the Problems] Therefore, in the present invention, a steel floor consisting of a top plate 1 and a bottom plate 2 of surface-treated steel plates of a predetermined shape obtained only by press working with high productivity without welding is provided. The panel was developed. The top plate 1 and bottom plate 2 in the product of the present invention are integrated by pressure fastening over almost the entire circumference of the edges, and the outer peripheral surface is formed by a vertical wall 3 provided on the top plate 1 or the bottom plate 2, A support column 4 is provided inside the vertical wall and the top plate 1 is installed.
Alternatively, it has a structure in which the contact portion of the bottom plate 2 is press-fastened. [0008] The surface-treated steel sheet referred to in the present invention is one that has been subjected to surface treatments such as galvanizing, synthetic resin baking, painting, and chromate treatment on top of galvanizing for rust prevention. Integrating almost the entire circumference of the edge by pressure fastening means
This involves bending the overlapping edges of the top plate 1 or the bottom plate 2 toward the other side by pressing to integrate the two. [0009] The vertical wall provided on the top plate 1 or the bottom plate 2 is a wall provided perpendicularly to the bottom surface of the bottom plate 2 to form the side surface of the steel floor panel. [0010] The support column 4 is a part of a support column structure that is press-formed between the top plate 1 and the bottom plate 2 to withstand the load on the panel in order to increase the internal strength of the steel floor panel. [0011]

[Effect]

In a steel floor panel with such a structure, the top plate 1 and bottom plate 2 are integrated by pressure fastening, so the entire steel floor panel is subject to corrosion in the welded parts and exposed metal parts. There are no exposed parts, and the corrosion resistance of the surface-treated steel sheet is maintained sufficiently. The support columns 4 provided inside the vertical wall and the truss structure and hollow structure formed thereby make the interior of the steel plate floor panel a lightweight, reinforced, load-bearing structure. [0012]

【Example】

1 to 4 show a first embodiment of the present invention, in which FIG. 1 is a plan view, FIG. 2 is a front view, and FIG. 3 is a bottom view. FIG. 4 is an enlarged sectional view taken along line AA in FIG. [0013] As is clear from these figures, the steel floor panel of the present invention consists of a top plate 1 and a bottom plate 2. In both cases, surface-treated steel sheets such as galvanized steel are used. The bottom plate 2 is provided with vertical walls 3 on all sides by press molding, the upper part of which is a horizontally folded fastening flange part 5, and the grounding bottom part 6, which is the bottom surface of the floor panel, is provided with support columns that protrude upward. 4 is formed. The top plate 1 has a fastening hole 7 that is connected to the bottom plate 2.
It is located at a position corresponding to the plurality of support columns 4, and its edge protrudes downward and bends to press and fasten the upper part of the support columns 4 having a truss structure. The four edges of the top plate 1 are bent downward and the fastening flange 5 of the bottom plate 2 is press-fastened, but there is a pressing groove 8 that extends downward from the inside from the edge, and the back side of the bottom plate 2 touches the upper edge of the [0014] FIG. 5 shows a second embodiment of the present invention, and is a longitudinal cross-sectional view of a main part. In this example, the outer periphery of the fastening flange portion 5 of the bottom plate 2 is bent further downward as compared to the above example, and the top plate 1 press-fastens the upper part of the support column 4, and the bottom plate [0015] Fig. 6 shows a third embodiment of the present invention. The edge portion is a fastening flange portion 9 that engages the peripheral edge of the top plate 1, and the support column 4, which is formed by cutting and raising a part of the bottom plate 2, has an upper portion provided on the top plate 1. It has a pressure fastening structure that protrudes upward from the fastening hole 10 and is bent left and right. [0016] In the examples of the steel floor panels of the present invention described so far, the vertical walls 3 and the support columns 4 are provided on the bottom plate 2, but the present invention is not limited to this. Other structures may be provided with the diversification of steel floor panels, such as having walls or support columns on the top plate. [0017]

【Effect of the invention】

Since the steel floor panel of the present invention has the above structure,
Despite being made of steel, it is able to maintain a comfortable office environment without rust. It is useful as an intelligent free access floor because it can sufficiently withstand the loads of 99 equipment, computers, and other various types of equipment, is lightweight, allows for flexible office layouts, and allows for easy wiring changes. [0018] Compared to other aluminum products, it does not require machining and is pressed by press processing, so it has high productivity and can be provided at low cost.

[Brief explanation of drawings]

[Figure 1] FIG.

[Figure 2] It is a front view.

[Figure 3] It is a bottom view.

[Figure 4] FIG. 2 is an enlarged sectional view taken along line A-A in FIG. 1;

[Figure 5] FIG. 7 is a sectional view of a main part of another embodiment.

[Figure 6] FIG. 7 is a sectional view of a main part of another embodiment.

[Explanation of symbols]

1 Top plate 2 Bottom plate 3. Vertical wall 4 Support pillar 5 Fastening flange part 7 Fastening hole 8 Press groove part 9 Fastening flange part 10 Fastening hole

【Document name】

drawing

[Figure 1]

[Figure 2]

[Figure 4] ■

[Figure 5]

[Figure 6]

Claims (1)

[Claims] [Claim 1] Consisting of a top plate 1 and a bottom plate 2 made of surface-treated steel sheets press-formed into a predetermined shape, the top plate 1 and the bottom plate 2 are integrated by pressure fastening over almost the entire circumference of the edge, And top plate 1
Alternatively, a steel floor panel in which the outer peripheral surface is formed by a vertical wall 3 provided on a bottom plate 2, and a support column 4 is provided inside the vertical wall and is press-fastened at the contact portion of the top plate 1 or the bottom plate 2.