JP4298808B2 - Fixing structure of support leg of floor board - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a fixing structure for a support leg of a floor board, and more particularly to a fixing structure for fixing a support leg to an H-shaped steel.
[0002]
[Prior art]
In an office floor or the like, a support leg is fixed on a floor slab, and a floor board is spread on the support leg to constitute a free access floor. However, in a clean room or the like, since it is necessary to secure a large space as a space under the floor board, a H-shaped steel is spanned over the structure, and support legs are fixed on the H-shaped steel to constitute a free access floor. .
At that time, as a method for fixing the support leg and the H-shaped steel, an adhesive is generally used, and a technique for fixing the support leg and the H-shaped steel by welding is also used.
[0003]
[Problems to be solved by the invention]
Among the conventional methods of fixing the support legs and the H-shaped steel, the fixing method using an adhesive has a problem that the reliability regarding the fixing strength is not necessarily high enough. In addition, it is necessary to secure a curing period until the adhesive solidifies, that is, it is not possible to proceed to the next step until the adhesive is completely dried, and it is not possible to shorten the construction period. is there. In addition, once the support legs are bonded, the position of the support legs cannot be easily changed. Furthermore, there is a risk of spilling a solvent, particularly in a clean room, etc. At this time, a gas undesired for the clean room may be generated due to a chemical reaction between the solvent and the adhesive.
[0004]
On the other hand, according to welding, a sufficient fixing strength can be ensured, a curing period is unnecessary, and there is no possibility of causing any particular problem when a solvent is spilled. However, welding a large number of support legs itself leads to a long construction period, and it is not easy to secure workers due to the shortage of recent welders. In addition, once the support legs are welded, the position of the support legs cannot be easily changed.
Therefore, the present invention provides a support leg and an H-shaped steel that have sufficient fixing strength, can shorten the construction period, can easily change the position of the support leg, and do not cause a chemical reaction. It is an object to provide a fixing structure.
[0005]
[Means for Solving the Problems]
The present invention has been made in order to solve the above-described problem, that is, a support leg of a floor plate is placed on the upper surface of the upper flange of an H-shaped steel composed of an upper flange, a web and a lower flange, and the upper plate portion A fixing plate having a U-shaped cross section having a length substantially the same as the length of the base plate of the support leg, and the side plate portion substantially covering the side surface of the base plate of the support leg. The upper plate portion is arranged on both sides of the web so that the upper plate portion faces the upper surface of the base plate of the support leg and the lower plate portion faces the lower surface of the upper flange, and the upper plate portion of the fixing bracket is arranged on the upper plate portion. This is a fixing structure of the support leg of the floor board, in which two female threads are formed and a bolt is inserted into each of the two female threads to fix the supporting leg and the H-shaped steel.
[0006]
[Means for Solving the Problems]
The present invention also includes a support column and a base plate that is fixed to the lower end of the support column and extends to the front, rear, left, and right sides on the upper surface of the upper flange of an H-shaped steel that includes an upper flange, a web, and a lower flange and extends in the front-rear direction. Place the support legs of the floorboard, provide the upper brackets on the front and rear of the support column, respectively, place the upper brackets on the upper surface of the base plate, and the left and right ends of both upper brackets outward from both sides of the upper flange The lower metal fittings are arranged on both sides of the web so as to face the lower surface of the upper flange and protrude outward from the side surfaces of the upper flange, and the ends are bent toward the upper metal fitting. in a state in which the bent tip is brought into contact with the lower surface of the upper fitting, and the upper bracket and the lower bracket of the side surface of the upper flange outwardly projecting portion by bolting, and the strut Serial to fix the H-shaped steel, a fixed structure of the support legs of the floorboards.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described. 1 to 3 show a first embodiment of a fixing structure of a floor board support leg according to the present invention. An H-section steel 1 composed of an upper flange 1a, a web 1b, and a lower flange 1c is arranged so that the upper flange 1a faces the horizontal direction, and the support leg 2 is placed on the upper surface of the upper flange 1a. Yes.
The support leg 2 has a base plate 2a, and a column 2b is erected on the base plate 2a. A male screw is engraved on the column 2b, and a nut 2c and a cradle 2d are screwed into the male screw. A lock bolt is screwed into each of the nut 2c and the cradle 2d, and the position of the nut 2c and the cradle 2d can be fixed in that state after adjusting the height of the nut 2c.
A receiving plate 2e is provided on the receiving table 2d, and four positioning protrusions 2f are provided on the receiving plate 2e. The floor plate 4 is placed on the receiving plate 2e via the cushioning material 3, and the floor plate 4 is prevented from being displaced by fitting the positioning projection 2f of the support leg into the recess formed on the lower surface of the floor plate 4. It is configured. For example, a carpet 5 is laid on the upper surface of the floor plate 4.
[0008]
The support leg 2 and the H-section steel 1 are fixed by a fixing bracket 6. The fixture 6 is formed in a U-shaped cross section by an upper plate portion 6a, a side plate portion 6b, and a lower plate portion 6c, and female screws are engraved at two locations on the upper plate portion 6a. The fixing metal 6 is disposed on the right side and the left side of the web 1b so that the upper plate portion 6a faces the upper surface of the base plate 2a of the support leg and the lower plate portion 6c faces the lower surface of the upper flange 1a. . Thereafter, when the bolt 7 is screwed into the female screw of the upper plate portion 6a, the tip of the bolt 7 comes into contact with the upper surface of the upper flange 1a, and when the bolt 7 is still screwed, the upper plate portion 6a of the fixing bracket is moved upward. Accordingly, the lower plate portion 6c is pressed against the lower surface of the upper flange 1a, and thus the support leg 2 and the H-section steel 1 are firmly fixed.
[0009]
As described above, in this embodiment, since the support leg 2 and the H-section steel 1 are fixed by mechanical means, the fixing leg 2 has sufficient fixing strength and may cause a chemical reaction even if a solvent or the like is spilled. There is no. Further, since a skilled worker such as a welder is not required and a curing period is not required, the work period can be shortened. Furthermore, since the position of the support leg 2 can be adjusted by loosening the bolt 7, the position of the floor board 4 can be easily finely adjusted.
[0010]
4 to 6 show a second embodiment of the present invention. In the said 1st Example, it cannot be said that there is no possibility that the fixing metal fitting 6 will fall off to the side by the bolt 7 loosening. In the second embodiment, two upper metal fittings 8a and 8b and two lower metal fittings 9a and 9b are used so that there is no risk of such dropout.
When the longitudinal direction of the H-shaped steel is the front-rear direction and the width direction is the left-right direction, one upper metal fitting 8a, 8b is provided before and after the support 2b of the support leg 2, and the front upper metal fitting 8a is provided on the front side of the base plate 2a. The rear upper metal fitting 8b is placed on the upper surface of the base plate 2a. The left and right ends of the upper metal fittings 8a and 8b protrude leftward and rightward from both sides of the upper flange 1a.
On the other hand, the lower metal fittings 9a, 9b are provided one on each of the left and right sides of the web 1b, and are arranged to face the lower surface of the upper flange 1a. The left end of the left lower metal fitting 9a or the right end of the right lower metal fitting 9b protrudes leftward or rightward from the side surface of the upper flange 1a and is bent upward, and the upper end thereof is connected to the front upper metal fitting 8a and the rear side. It is in contact with both upper metal parts 8b.
[0011]
Of the upper metal parts 8a, 8b and the lower metal parts 9a, 9b, portions protruding outward from the side surface of the upper flange 1a are fastened to each other by bolts 7. That is, the bolt 7 includes the front upper metal fitting 8a and the left lower metal fitting 9a, the front upper metal fitting 8a and the right lower metal fitting 9b, the rear upper metal fitting 8b and the left lower metal fitting 9a, and the rear upper metal fitting 8b and the right right metal fitting. Four are provided for fastening the lower metal fitting 9b.
By tightening the bolt 7 in this way, the base plate 2a of the support leg and the upper flange 1a of the H-shaped steel are clamped and fixed between the upper metal fittings 8a and 8b and the lower metal fittings 9a and 9b. At this time, in this embodiment, even if the bolt 7 is loosened, the upper metal fittings 8a and 8b and the lower metal fittings 9a and 9b cannot be dropped off. Therefore, the reliability is higher than the fixing structure of the first embodiment. I can say that.
In this embodiment, the two upper metal fittings 8a and 8b are used, but the left end or the right end of the upper metal fittings 8a and 8b can be joined to form one upper metal fitting having a U-shape in plan view.
[0012]
【The invention's effect】
According to the present invention, the support leg and the H-shape have sufficient fixing strength, can shorten the construction period, can easily change the position of the support leg, and do not cause a chemical reaction. A fixed structure with steel is obtained.
[Brief description of the drawings]
FIG. 1 is a side sectional view showing a first embodiment of the present invention. FIG. 2 is a front view showing the first embodiment. FIG. 3 is a plan view showing a state in which the floor board of the first embodiment is removed. Side sectional view showing the second embodiment. FIG. 5 is a front view showing the second embodiment. FIG. 6 is a partial sectional plan view showing the second embodiment.
DESCRIPTION OF SYMBOLS 1 ... H-section steel 1a ... Upper flange 1b ... Web 1c ... Lower flange 2 ... Supporting leg 2a ... Base plate 2b ... Column 2c ... Nut 2d ... Base 2e ... Base plate 2f ... Positioning protrusion 3 ... Buffer material 4 ... Floor plate 5 ... Carpet 6 ... Fixing bracket 6a ... Upper plate portion 6b ... Side plate portion 6c ... Lower plate portion 7 ... Bolts 8a, 8b ... Upper bracket 9a, 9b ... Lower bracket

Claims (2)

A support leg of the floor plate is placed on the upper surface of the upper flange of the H-shaped steel consisting of an upper flange, a web and a lower flange, and consists of an upper plate part, a side plate part, and a lower plate part, and the length of the base plate of the support leg A fixing bracket having a substantially U-shaped cross section having the same length as that of the base plate of the support leg, the upper plate portion facing the upper surface of the base plate of the support leg, as the plate portion is opposed to the lower surface of the top flange, on both sides of the web are arranged, a form two female threads on the upper portion of the fixing bracket bolts to each of the two female thread A structure for fixing a support leg of a floor board, wherein the support leg and the H-shaped steel are fixed by insertion. A floor plate support leg having a support column and a base plate that is fixed to the lower end of the support column and extends in the front-rear and left-right directions on the upper surface of the upper flange of an H-shaped steel made up of an upper flange, a web and a lower flange and extending in the front-rear direction. Placing the upper metal fittings on the front and rear sides of the support column, placing the upper metal fittings on the upper surface of the base plate, and projecting the left and right ends of both upper metal fittings outward from both sides of the upper flange, Lower metal fittings that face the lower surface of the upper flange and project outward from the side surface of the upper flange on both sides of the web, and whose ends are bent toward the upper metal fitting, are respectively disposed, and the bent tip portions of the lower metal fittings are arranged. With the upper metal fitting and the lower metal fitting in a portion protruding outward from the side surface of the upper flange in a state of being in contact with the lower surface of the upper metal fitting, the column and the H-shaped steel are Boss was fixed structure of the support legs of the floor plate, characterized in that.

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