JP2596550Y2 - Support bolts for floor panel support legs - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for preventing a floor panel supporting leg from loosening between a floor panel and a supporting bolt.

[0002]

2. Description of the Related Art In a free access floor panel, corners where each floor panel accumulates at a fixed distance from a foundation floor are collectively supported by floor panel support legs (hereinafter referred to as support legs). We take a method of support. In this case, it is necessary to adjust the height of the support legs in order to absorb irregularities on the foundation floor surface and manufacturing errors of the floor panel. For this reason, most conventional ones employ a method in which, of the members constituting the support legs, the support for supporting the floor panel is supported by a single screw support relative to the base, and the height of the screw support is adjusted. Was.

However, according to this method, when the size of the support becomes large, the stability is lost, and the height of the support is also raised and lowered, so that individual adjustment of each floor panel cannot be performed. For this reason, as shown in Japanese Utility Model Laid-Open No. 63-62536, support bolts corresponding to the number of floor panels (normally four) are erected on the base, and each support bolt supports each floor panel. In some cases, the height can be adjusted individually by adjusting the height of each support bolt.

[0004]

[Problems to be solved by the present invention] On the other hand, a load is repeatedly applied to the floor panel due to a person walking,
As it is, the support bolts are loosened and rattling occurs. For this reason, the support bolt requires some loosening prevention (rotation prevention) structure. The most reliable locking structure is a method in which a nut is screwed into each support bolt and the nut is tightened to the base to apply a preload to the support bolt. However, it is very difficult and troublesome to operate many objects one by one because the installation location of the nut is coupled with the narrow space behind the support.

[0005] In particular, the case of a supporting leg for a low floor is the same, and a double nut (a nut is welded to the female screw portion of the supporting leg, so that a nut for preventing loosening is doubled on the nut) is used. There is also a problem that it cannot be lowered any more because of the existence. In addition, as shown in the above-mentioned prior art, there is a method in which a spring is stretched on the support bolt and a preload is applied to the support bolt by the force of the spring. However, the cost is high and the assembly is troublesome. Is one more.
The present invention is intended to solve such a drawback, and enables a structure for preventing the loosening of the support bolt which is simple and inexpensive.

[0006]

SUMMARY OF THE INVENTION Under the above-mentioned problems, the present invention, as a basic means, is abutted with four support bolts which are screwed up on a base placed on a foundation floor.
At the floor panel support legs that support the four floor panel corners to be laid in a height-adjustable manner, the protrusions on the top surface of each support bolt project upward with respect to the surrounding head
Rye plate that puts the protrusion on the floor panel
And support the rye plate from below with the head.
The ry plate with the tightening bolt.
Press the plate firmly from above and slightly deform it elastically.
A support bolt loosening prevention structure for a floor panel support leg, wherein the support bolt is screwed to a base in a folded state .

Furthermore, the present invention is, as being added to the basic means of above, laid the support on Rye plates together when supporting the floor panels, recessed holes in the rear surface of the support, the support bolt means allowed to enter the protrusion into the hole, to form a projection on the top surface of the projecting portion, means in contact with the support projections, to support the protruding portion upwards,
Means are provided, each having a through hole through which a tool can be inserted into a tool insertion hole formed on the top surface of the protrusion.

[0008]

[Function] By taking the above basic means, the rye plate is slightly elastically deformed to the base by the tightening bolt.
At this time, the rye plate strongly presses each support bolt from above to apply a preload to the bolt to prevent loosening. On the other hand, among the additional means, the combination of the protrusion and the hole prevents the support and the rye plate from shifting. Further, the contact between the projection formed on the projecting portion and the support can further prevent the support bolt from being loosened. Furthermore, by forming a through hole in the support, the support bolt can be easily adjusted up and down.

[0009]

1 is a plan view of a support leg according to the present invention, FIG. 2 is a sectional view taken along line AA of FIG. 1, and FIG. 3 is a partial sectional side view showing the support leg for each component. The support legs are provided at a position equidistant from the center according to the number of floor panels laid on the base 12 placed on the base floor 10 and a plurality of floor panels laid on the base 12 in this example. To 4
The book cover includes a rye plate 18 supported by support bolts 14 and screwed to the base 12 by tightening bolts 16 passing vertically, and a support 22 installed on the rye plate 18 and supporting a floor panel 20.

The base 12 has a shape in which a cup is turned down, and a support bolt 14 is screwed on an upper surface of the base at a position equidistant from the center to stand up. A small-diameter projection 24 and a large-diameter head 26 are formed at the top of the support bolt 14 in a stepped manner, and the projection 24 is formed in a hole 28 formed in a ry plate 18 made of a thin metal plate. And the other head 26 supports it from below. Note that a tool insertion hole 25 is formed in the top surface of the protruding portion 24. A tightening bolt 16 is inserted into the center of the lie plate 18 and screwed to the base 12.

FIGS. 4 and 5 are a plan view and a partial cross-sectional side view of the lie plate 18 described above. As a result, the lie plate 18 is slightly elastically deformed to strongly press the support bolt 14 from above. In addition, the support bolt 14 is prevented from loosening (turning). Strictly speaking, the height of the individual support bolts 14 may be slightly different depending on the height adjustment. However, since the rye plate 18 is a thin metal plate as described above, this difference Is easily absorbed by elastically deforming itself and presses all the support bolts 14 evenly from above. By doing so, the relative position of each support bolt 14 is regulated, and as a result, an effect of increasing the strength can be expected.

The support 22 is made of a resin material and has a quadrangular star shape in plan view. At the center of the support 22, a projection 32 is formed to fill the notch 30 formed at the corner of the floor panel 20 from below and fill it, and around the projection 32, a support for supporting the floor panel 20 is formed. Part 3
4 are formed. Further, a projecting portion 36 is formed on the outer periphery of the support portion 34 so as to fall down in steps and extend to the peripheral edge. Further, at each corner, an insertion portion 40 is formed to be inserted into an insertion notch 38 formed at the periphery of the floor panel 20, and the insertion portion 40 and the support portion 34 are provided with ribs 42 projecting above the overhang portion 36. But they are connected.

In addition, the projecting portion 24 of the support bolt 14 (projects upward through the hole 28 of the lie plate 18).
A hole 44 is provided on the back surface of the overhang portion 36 of the support 22 that contacts the support 22.
Is recessed, so that the protrusion 24 can be fitted into the hole 44. Thereby, the displacement between the support bolt 14 and the support 22 is prevented. A through hole 46 is formed at the center of the hole 44, and a tool can be inserted into the tool insertion hole 25 of the support bolt 14 from the through hole 46 so that the support bolt 14 can be turned.

FIG. 6 is a partial perspective view of the floor panel 20. The floor panel 20 has a flat top surface and a bottom surface formed with a bulging portion 50 which bulges downward while leaving the periphery as a flange 48. It has a square shape in plan view.
The notch 30 is formed at the corner of the flange 48, and the notch 38 for insertion is formed at the periphery near the corner. Also, the flange 48 close to the notch 30
Is formed as a lower step 52 bent downward. Further, a surface material 54 is attached to the upper surface of the floor panel 20.

The above-mentioned floor panel 20 is mounted on and supported by the support 22. At this time, the lower step 5
2 is a support part 34, a flange 48 is a rib 42, and a bulge part 50 is supported by an overhang part 36, respectively. Further, a projection 32 is provided in the cutout 30 at the corner of the floor panel 20.
The insertion portions 40 respectively protrude into the insertion notches 38 on the peripheral edge portion, thereby preventing a recessed hole from being formed in the floor panel 20 and also preventing displacement thereof. Although FIG. 7 is also a cross-sectional view of the support legs, this embodiment has a structure in which the height from the foundation floor surface 10 to the rye plate 18 is low. By eliminating the need for a nut for preventing loosening, it is possible to reduce the height in this way. In this case, height adjustment and loosening prevention can be performed by an operation from above, which is convenient.

Incidentally, at this time, the support bolt 14 is strongly pressed downward by the lie plate 18, thereby preventing the loosening of the support bolt 14. However, the contact between the support 22 and the support bolt 14 prevents the loosening of the support bolt 14. Perfection is achieved. FIG. 8 shows the support bolt 14.
FIG. 9 is an enlarged sectional view taken along the line BB of FIG. 8, and a sharp projection 56 is radially formed around the tool insertion hole 25 formed on the top surface of the protrusion 24 of the support bolt 14. The protrusion 24 fits into the hole 44 of the support 22,
When the load applied to the floor panel 20 presses the support 22 downward, the protrusion 56 bites into the support 22 and a further locking effect is achieved.

FIG. 10 is a cross-sectional view showing a case where the floor panel 20 is fixed by the supporting legs. In order to prevent danger of the floor panel 20 falling off or rising when an earthquake or the like occurs, important equipment is provided. It is necessary to firmly fix the floor panel 20 laid at the place where it is to be installed or the passage where people frequently come and go. (On the contrary, the floor panel 20 laid at a place where there is no danger of causing danger is not necessarily fixed. Absent). In this case, first, the projection 32 is peeled off using a pair of pliers or a screwdriver (the periphery of the projection 32 is formed to be thin so as to be able to do this). Apply structure.

FIG. 11 is a partially sectional side view of the pin sleeve 58, and FIG. 12 is a side view of the cam bolt 60.
In the space from which the protrusion 32 has been removed (this portion is a space 62
First, the pin sleeve 58 is fitted. The pin sleeve 58 has a hole 64 in the bottom wall and four legs 66 protruding downward, and has a cylindrical shape with one pin 68 protruding from the inner periphery. is there.

This is fixed to the base 12.
To this end, the tightening bolt 16 is once loosened and removed, the foot 66 is fitted into the hole 70 formed in the rye plate 18, and the tightening bolt 16 is passed through the hole 64 on the bottom surface of the base 1.
Re-screw to 2. Next, the floor panel 20 is pressed by the cam bolt 60 and is engaged with the pin sleeve 58. The cam bolt 60 has a large-diameter head 72 and a lower end where the pin 68 of the pin sleeve 58 fits. And a body portion 76 in which a cam groove 74 that turns spirally is formed.

When the cam groove 74 of the cam bolt 60 is fitted into the pin 68 of the pin sleeve 58, a tool is inserted into a tool insertion hole 78 formed in the head 72, and the tool is pressed down and turned.
The cam bolt 60 is engaged with the pin sleeve 58,
At this time, the lower step 52 of the floor panel 20 is held between the head 72 and the support 34 of the support 22. At this time, the head 72 of the cam bolt 60 is
Into the lower step portion 52, and the upper surface thereof and the upper surface of the floor panel 20 become almost the same height.

FIG. 13 is a cross-sectional view of a case where only the wiring is taken out from the above-described support leg (strictly, the support 22). In this case, first, the insertion portion 40 is removed. For this purpose, when a driver or the like is pushed into the cylindrical portion 80 formed in the insertion portion 40 and squeezed, the portion is torn off (the stripping portion is formed to be thin so as to enable this), and the portion is opened. I do. As a result, the wiring 82 existing in the underfloor space may be taken out from the insertion notch 38 onto the floor panel 20. The tubular portion 80 has a structure supported by the rye plate 18 and also has a function of preventing the insertion portion 40 from being cracked or dropped due to a load from above.

[0022]

As described above, the present invention is as described above, that is, since each support bolt is always pressed down from above by a lie plate, a preload is applied to prevent the loosening. At this point, there is no need for any locking operation or the like for each support bolt. Further, the combination of the projecting portion of the support bolt and the hole of the support can prevent the support and the rye plate from shifting. Further, by forming the projection on the projecting portion and bringing the projection into contact with the support, it is possible to further prevent the support bolt from being loosened. In addition, by forming a through hole in the support above the protruding portion of the support bolt, various effects such as easy adjustment of the support bolt up and down can be expected.

[Brief description of the drawings]

FIG. 1 is a plan view of a support leg according to the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a partial cross-sectional side view of the support leg according to the present invention disassembled for each component.

FIG. 4 is a plan view of a rye plate.

FIG. 5 is a partial cross-sectional side view of a rye plate.

FIG. 6 is a partial perspective view of a floor panel.

FIG. 7 is a sectional view of the support leg according to the present invention.

FIG. 8 is a plan view of a support bolt.

FIG. 9 is an enlarged sectional view taken along line BB of FIG. 8;

FIG. 10 is a cross-sectional view when a floor panel is fixed by support legs.

FIG. 11 is a partial cross-sectional side view of a pin sleeve.

FIG. 12 is a side view of the cam bolt.

FIG. 13 is a cross-sectional view when wiring is taken out from a support leg portion.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Base floor 12 Base 14 Support bolt 16 Tightening bolt 18 Ly plate 20 Floor panel 22 Support 24 Projection part of support bolt 25 Tool insertion hole 26 Head of support bolt 44 Hole 46 Through hole 56 Projection

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. ⁶ , DB name) E04F 15/024 E04F 15/00

Claims (4)

(57) [Scope of request for utility model registration] 1. A four- sided support bolt that is screwed to a base placed on a foundation floor, and is laid against the base.
In the floor panel support legs for supporting the corners of the two floor panels in a height-adjustable manner, projecting portions are projected upward on the top surface of each support bolt with respect to the surrounding head,
Part through the rye plate on which the floor panel is placed
While supporting the rye plate from below with the head
The rye plate with the tightening bolts
A floor panel supporting leg supporting bolt loosening structure, wherein the supporting panel is strongly pressed from above and slightly elastically deformed and is screwed to the base. To together wherein the supporting floor panel laid the support on Rye plates, recessed holes in the rear surface of the support, the projecting portion of the support bolt, characterized in that intruded into this hole claims Item 4. A support bolt loosening prevention structure for a floor panel support leg according to Item 1. Wherein to form a projection on the top surface of the protruding portion, the support bolt loosening prevention structure according to claim 1 or 2 of the floor panel support leg, characterized in that in contact with the support projections. 4. A protrusion upper support according to claim 1 to 3 or of the floor panel support the tool in the tool insertion hole formed in the top surface of the protruding portion is characterized in that a through hole is formed can be inserted Leg support bolt locking structure.