JPH0336090B2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to an improved raised floor support leg for supporting a floor panel at a predetermined height on a floor slab.

[Conventional technology]

As an example of its structure is shown in FIG. 1, the free access floor support leg 1 has the function of supporting a large number of floor panels 3 in series at a predetermined height on a floor slab 2. The structure of the support leg for a raised floor generally consists of a ground plate 4, a support column 5, and a panel pedestal 6. As the name suggests, the panel pedestal 6 supports the floor panel 3, and in the illustrated example, a disc is cut and raised at four places to provide locking claws 7. The support column 5 is a bolt-shaped member having a threaded structure extending from the upper part to the lower part. Conventionally, this type of support leg has been made by welding a nut 12 to the top of a cylindrical support on the ground plate to form a support support 18, as shown in FIG. A fixing screw hole 13 is provided in the direction, and a fixing screw 14 is screwed into the hole. Furthermore, as seen in Utility Model Publication No. 54-43535,
A screw hole was formed in the support of the ground plate, the screw of the support was screwed in, and the upper part was tightened with a nut.

[Problem to be solved by the invention]

Therefore, it is necessary to weld the nut to the column or drill a screw hole on the side of the nut, and the number of parts is large.Especially in the latter case, the column holder must be tapped, and at least Since it is necessary to use a plate thicker than one pitch of screws, it has the disadvantage of increasing production costs.

[Means to solve the problem]

The present invention provides support legs for free access floors in which the height between the ground plate 4 and the panel pedestal 6 is adjusted and fixed using a screw-structured column 5 and a tightening nut 11. The vicinity of the screw hole 9 of the receiver 8 is formed with a thickness less than the screw pitch, and a notch 10 is provided in a part of the screw hole 9.

[Function] The threaded support 5 can be vertically screwed in by the screw hole of the support holder, which is formed with a plate thickness less than the thread pitch of the support, and a part of the notch. That is, when the thread of the threaded rod of the support 5 is forcibly screwed into the screw hole 9 and the support 5 is stood upright, the notch of the screw hole 9 becomes uneven.
The periphery of the hole follows the thread and serves as a screw receiver for the bolt without the need for tapping, and a double nut is formed with the nut screwed into the bolt of the support to provide a locking action for the support. Also, since the load from above applied to the nut that is in contact with the top surface of the support post is equal to the support support,
Prevents wobbling and improves load resistance.

【Example】

A detailed explanation will be given below with reference to illustrative drawings. FIG. 2 is a plan view of the first embodiment of the present invention, FIG. 3 is a front view, and FIG. 4 is a bottom view. FIG. 5 is a sectional view taken along the line AA in FIG. 3. FIG. 6 is a plan view of the ground plate with the support column removed. Figure 7 is the third
It is a sectional view taken along line BB in the figure. Figure 8 is C in Figure 6.
-C section sectional view. FIG. 9 is a partially cutaway side view of the second embodiment. FIG. 10 is a central vertical sectional view of the third embodiment. FIG. 11 is a front view of the support section of the conventional product. In these figures, the ground plate 4 is formed by press-forming a metal plate having a thickness equal to or less than the screw pitch of the support support 5, and a support support 8 having a substantially trapezoidal cross section is formed in the center thereof. A screw hole 9 into which the support column 5 is screwed is provided in the center of the support column receiver 8, and a portion of the screw hole 9 forms a notch 10 to form a deformed hole. The effect of this notch 10 is great, as shown in Figures 7 to 1.
This will be explained using Figure 0. As seen in these figures, a part of the screw hole 9 is cut out and the surrounding plate thickness is less than the screw pitch, so when the support 5 is screwed in, the screw hole 9 is separated into upper and lower parts at the notch. It follows the thread groove. This notch may be provided with a step in advance so that a screw can be easily attached thereto. If the column screwed in in this manner is further tightened from above with the tightening nut 11, the column will no longer rotate. In other words, it has the same effect as tightening with a double nut. Without this tightening nut, all the load would be placed on the screw hole in the thin plate, and it would not be able to withstand a large load, but with this tightening nut, the entire support support would support it, resulting in a structure that can withstand high loads. . If the support leg for the raised floor is structured as described above, the same fixing effect as double nuts can be obtained not only in the low floor type shown in Figures 2 to 8 but also in the high floor type shown in Figure 9. It will be done. In addition, as shown in Figure 10, there is also a type that can be turned upside down and used as the ground plate 4 and the panel holder 6 instead of what used to be the panel holder. The same can be done.

【Effect of the invention】

Since the present invention has the structure as detailed above,
Although it has a small number of parts and is easy to process, its height can be adjusted freely and it has a sufficient anti-rotation effect. In other words, there is no longer a need for screw holes and fixing screws on the side of the nut, which are required for fixing the support columns in conventional products, and there is no need for welding the nut to the support support. In this way, the combination of the strut support and the tightening nut forms a double nut that can withstand high loads. Since the thickness of the strut support can be made thinner than the screw pitch, it can be manufactured at low cost.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the state of use. FIG. 2 is a plan view of the first embodiment of the present invention, FIG. 3 is a front view, and FIG. 4 is a bottom view. FIG. 5 is a sectional view taken along the line AA in FIG. 3. FIG. 6 is a plan view of the ground plate with the support column removed. Figure 7 is B- in Figure 3.
It is a sectional view of part B. FIG. 8 is a sectional view taken along the line CC in FIG. 6. FIG. 9 is a partially cutaway side view of the second embodiment. FIG. 10 is a central vertical sectional view of the third embodiment. FIG. 11 is a front view of the support section of the conventional product. 1...Support leg for raised floor, 2...
...Floor slab, 3...Floor panel, 4...Ground plate, 5
...Strut, 6...Panel pedestal, 7...Latching claw,
8, 18... Prop holder, 9... Screw hole, 10...
...Notch, 11...Tightening nut, 12...Nut,
13...Fixing screw hole.

Claims (1)

[Claims] 1 In a support leg for a free access floor in which the height between the ground plate 4 and the panel holder 6 is adjusted and fixed using the screw-structured column 5 and the tightening nut 11, the height between the ground plate 4 or the panel holder 6 is adjusted and fixed. A support leg for a free access floor, characterized in that the vicinity of the screw hole 9 is formed with a thickness less than the screw pitch, and a notch 10 is provided in a part of the screw hole 9.