JP2778466B2 - Floor panel support device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor panel supporting apparatus for supporting a floor panel at a predetermined height from a floor panel to form a so-called double floor.

[0002]

2. Description of the Related Art As this type of floor panel supporting apparatus, four corners of a floor panel are placed on supporting legs, and the upper surfaces of the corners are pressed downward by lock nuts mounted on the supporting legs. There has been known an apparatus in which a floor panel is fixed on a support leg with a narrow pressure. This is composed of a base on which supporting legs are mounted on a floor plate, and an elevating body which is supported by the base so as to be screwed up and down and abuts and supports the floor panel from below. The base includes a nut screwed to an upright bolt at a center position of a base plate placed on a floor plate, and a panel receiving plate on a cup having a bottom fixed to the nut. Then, the lock nut is formed into a cylindrical shape having a female screw portion on the inner periphery, and the female screw portion is screwed into an upright bolt and tightened, so that the upper end of the lock nut has a corner portion of the floor panel. The upper surface can be pressed and fixed.

[0003]

By the way, in the above-mentioned structure, the lock nut is only screwed and firmly screwed to the upright bolt, that is, the lock nut is tightened so that the lower surface of the upper end head is on the floor. The panel is pressed against and adhered to the upper surface of the corner of the panel, and thereafter does not rotate in a loosening direction unless a relatively large force is applied.

However, in reality, the plane formed by joining the corners and the plane on the lower surface of the upper end head simply come into close contact with each other so that they do not rotate due to the frictional force between them. Therefore, if the floor panel vibrates individually due to the applied load, the close contact state changes, and the lock nut may rotate in the loosening direction, that is, in the direction of the floor panel upper surface direction, little by little depending on the vibration state of the floor panel is there. In other words, since the lock nut is not configured so that its rotation is prohibited by, for example, a key pin after being tightened with respect to the upright bolt, while the floor panel is fixed with the narrow pressure for a long period of time, It may loosen depending on the sinking due to vibration or large load. as a result,
It is also possible that the floor panel may be partially lifted.

[0005] An object of the present invention is to solve such a problem.

[0006]

In order to achieve the above object, the present invention takes the following measures. That is, the floor panel support device according to the present invention places the corner of the floor panel on the support leg, and presses the upper surface of the corner downward by the lock nut screwed to the support leg to lower the floor panel. A lock nut is fixed on the support leg with a narrow pressure, and a lock nut is engaged with an edge portion between adjacent corners provided on the lower surface of the disk-shaped flange and the flange. It is characterized by comprising a rotation restricting means for restricting the rotation, and a cylindrical portion integrally provided on the lower surface side of the flange portion and screwed to the support leg.

The rotation restricting means according to the present invention is preferably formed of a ridge extending in the diameter direction of the flange and bulging downward from the flange. With such a ridge, it is possible to prepare a wide range of parts for restricting rotation.

In order to facilitate the height adjustment of the floor panel, a support leg is supported on the base mounted on the floor panel, and is screwed up and down on the base to abut the floor panel from below. It is preferable that the lock nut is screwed to one of the base and the elevating body so as to be able to move up and down.

[0009]

With such a structure, when the floor panel is fixed on the support leg with a narrow pressure, the rotation restricting means on the lower surface of the flange is engaged with the adjacent edge portion of the corner of the adjacent floor panel. The engagement restricts rotation of the lock nut. That is, when the rotation restricting means is engaged with the adjacent edge portion, unlike the state in which the lock nut screwed to the support leg is stationary by the frictional force in the pressed state between the corner and the flange, such a state is different. A static force exceeding the frictional force is generated by engagement between the rotation restricting means and the edge portion.

Therefore, even if the floor panel is fixed by the support leg and the lock nut with a narrow pressure, even if the corner is moved up and down due to vibration or the like, the engagement state with the edge of the rotation restricting means is maintained. Unless the lock nut is not removed, the lock nut does not rotate, so that the floor panel can be prevented from floating due to the looseness of the lock nut.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS.

The floor panel supporting apparatus shown in FIG. 1 has a supporting leg 2 fixed to a building floor A serving as a floor so that a corner 11 of the floor panel 1 is placed on the floor panel 1, and a screw on the supporting leg 2. And a lock nut 3 which is pressed down on the support panel 2 to press the floor panel 1 downward.

The floor panel 1 is a plate having a substantially square shape in plan view.
2 bonded together with a space between them to have a predetermined thickness
Consists of sheet metal. Four corners 11 of this floor panel 1
Is １ ／ of the outer diameter of the cylindrical portion 31 of the lock nut 3 described later.
The circular portion is notched and the upper end flange 32 of the lock nut 3
Is formed lower than the surface of the floor panel 1 by an amount corresponding to the thickness of the floor panel 1. The edge portion of the corner 11 close to the corner 11 when the two floor panels 1 come into contact with each other in order to firmly engage with a ridge as a rotation restricting means described later. The edge portion 11a is slightly curved downward (shown in FIG. 7) so that the portion 11a is close to form a groove-like space. As described above, since the edge portion 11a is slightly curved, when the lock nut 3 is loosened, the projection 33 can easily release the engagement. The edge portion 11a may be recessed toward the center of the corner 11 so as to form a gap substantially equal to the width of the ridge 33 when the corner 11 approaches.

The support leg 2 includes a base 4 mounted on the building floor A, and a lifting / lowering body 5 supported by the base 4 so as to be screwed up and down and supporting the floor panel 1 from below. I have. The base 4 includes a disk 41 having a plurality of ridges 41 a extending radially from a central portion, and an upright bolt 42 erected at the center of the disk 41. In the disc 41, mounting holes 41b are formed between the ridges 41a. The elevating body 5 includes a nut 51 that is screwed to the upright bolt 42 of the base 4.
And a cup-shaped panel receiving plate 52 having a bottom fixed to the nut 51. The panel receiving plate 52 is formed in a cup shape, and has a main body portion 52a provided with a flange 52b at an upper edge thereof, and a receiving plate for rotatably mounted on the upper surface of the main body portion 52a for positioning the floor panel 1. 52c. A stopper 52d is provided on the periphery of the flange 52b so as to protrude outward at a distance of 90 °, and a corresponding bent piece 52e is provided on the receiving plate portion 52c at every 90 ° of the periphery thereof. The bent piece 5 is provided on the stopper 52d.
The rotation range of the receiving plate portion 52c is regulated by the contact of 2e. The receiving plate portion 52c has a rubber sheet GS on the upper surface.
An opening 52f is formed in the center of the disk to pass the lock nut 3, and a pair of cut-and-raised pieces 52g is provided on the upper surface at every 90 °. . The cut and raised piece 52g is elongated in the diameter direction,
Both ends are bent so as to approach each other. The floor panel 1 is placed so that the adjacent side surfaces are in contact with the adjacent cut-and-raised pieces 52g, respectively. The depth of the cup-shaped portion of the main body 52a of the panel receiving plate 52 is shallower by the thickness of the floor panel 1 than the length of the upright bolt 42, and the height adjustment of the floor panel 1 is substantially equal to that of the upright bolt 42. It is configured so that it can be made equal to the length.

In contrast to such a support leg 2, the lock nut 3 includes an upper end flange 32 formed of a disc and an upright bolt 42.
And a cylindrical part 31 formed of a cylindrical body having an internal thread part 34 on the inner peripheral surface that is screwed into the cylindrical part 31. Upper collar 32
The lower surface 32m is formed flat, but ridges 33 are provided at four locations in the diametrical direction of the upper end flange 32 at 90 ° apart (shown in FIG. 5). The ridge 33 has a length from the outer surface of the cylindrical portion 31 to the outer surface of the upper end flange portion 32. On the other hand, corresponding to the ridges 33, marks 35 indicating the positions of the ridges 33 are provided at two places on the upper surface of the upper end flange 32. Although the outer peripheral portion of the upper surface of the upper flange 32 is chamfered, the chamfer is not performed at a predetermined width, so that a portion flush with the upper surface of the upper flange 32 is formed in the middle of the chamfered portion. 35 are formed. Cylindrical part 31
In order to reduce the weight, a plurality of lightening recesses 3
1a is formed. The internal thread portion 34 formed on the inner peripheral surface of the cylindrical portion 31 is formed to have a predetermined length from the lower end of the cylindrical portion 31. In addition, a hole 32a for a hexagon wrench used to tighten the lock nut 3 and a concave groove 32b formed radially are provided on the upper surface of the upper flange 32.

In the construction of the floor panel 1 having such a configuration, first, the support legs 2 are fixed at predetermined positions on the building floor A.
Next, the elevating body 5 of each support leg 2 is moved up and down to adjust its height, and the upper surface of the flange 52a of the panel receiving plate 52 is positioned on the same plane. After this, the floor panel 1 is
The lock nut 3 is inserted toward the upright bolt 42 from the through-hole formed by the cutout of each corner 11 by attaching the four floor panels 1 to each other. When the lock nut 3 comes into contact with the upright bolt 42, the lock nut 3 is rotated clockwise and screwed into the upright bolt 42. The lock nut 3 is further rotated and tightened until the lower surface 32m of the upper flange 32 of the lock nut 3 contacts the upper surface 11b of each of the four corners 11. Before the lower surface 32m of the upper end flange 32 contacts the upper surface 11b, the ridge 33 is
1b. Then, it is confirmed that the upper end flange portion 32 of the lock nut 3 has sufficiently pressed each corner portion 11, and rotation is performed at a position where the mark coincides with the side edge 1 a of any one floor panel 1 on a straight line. Abort. As a result, the ridge 33 is engaged with the edge portion 11a of the adjacent corner portion 11, so that the lock nut 3 does not easily rotate, and the floor panel 1 is pressed against the corner portion 11 by the upper end flange portion 32. It is clamped and fixed.

As described above, the lock nut 3 is such that the ridge 33 on the lower surface 32 m of the upper end flange 32 engages with the edge portion 11 a of the adjacent corner 11 and the lower surface 3 between the ridges 33.
2m is in close contact with the upper surface 11b.
The rotation is prohibited by the engagement force of No. 3 and the frictional force between the lower surface 32m and the upper surface 11b. For this reason, even if vibration or the like occurs on the floor panel 1 and some rotational force acts on the lock nut 3, since the ridge 33 is engaged with the edge portion 11 a, the engagement of the ridge 33 The lock nut 3 will not be loosened unless a sufficient rotational force acts to cancel the lock.
Therefore, it is possible to prevent the floor panel 1 from floating due to the looseness of the lock nut 3.

As still another embodiment of the present invention, FIG.
As shown in the figure, the lifting body 205 is composed of a nut 251 screwed to the upright bolt 42 of the base 4 and a nut 2
A lock nut 203 may be screwed to the elevating body 205 so as to be able to move up and down.

That is, the nut 251 has a cylindrical portion 251a on its upper surface, the cylindrical portion 251a is a cylindrical body having an inner diameter larger than the outer diameter of the upright bolt 42, and an outer thread 253 on its outer peripheral surface. Are formed. The male screw part 253 is formed on the inner periphery of the lock nut 203 and is screwed with the screw part 213. When the lower end of the lock nut 203 reaches the vicinity of the upper surface of the nut 251, the lock nut 203 is firmly fixed to the floor panel. 1 is formed long enough to press it. Also in this lock nut 203, a protrusion 233 is provided on the lower surface 232m of the upper end flange portion 232, and each protrusion 233 engages with the edge portion 11a of the adjacent corner 11, thereby turning after tightening. Regulate.

The present invention is not limited to the embodiment described above. For example, as the rotation restricting means,
In addition to the protrusions 33 and 233 as in the above-described embodiment, a hemispherical protrusion may be used. In this case, one hemispherical projection may be provided for one of the edge portions 11a of the adjacent corner portion 11, or a plurality of the hemispherical protrusions may be provided along the edge portion 11a. A plurality may be arranged in a row in the diameter direction.

In addition, the configuration of each section is not limited to the illustrated example, and various modifications can be made without departing from the spirit of the present invention.

[0022]

According to the present invention, as described in detail above, since the rotation restricting means is provided on the lower surface of the flange portion of the lock nut, when the lock nut is tightened, the rotation restricting means becomes close. The engagement with the edge of the corner, the rotation of the lock nut after tightening can be regulated by the engagement force, and the lock nut is loosened and the floor panel fixed with a narrow pressure rises. Can be prevented from occurring.

In addition, since the rotation restricting means engages with the edge of the adjacent corner, the structure of the floor panel is not complicated, and a great effect can be obtained with a simple configuration. is there.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an embodiment of the present invention.

FIG. 2 is a side view showing a part of the embodiment in cross section.

FIG. 3 is an exemplary front view showing a part of the lock nut of the embodiment in cross section;

FIG. 4 is a top view showing a state in which the lock nut of the embodiment presses the floor panel.

FIG. 5 is a bottom view of the lock nut of the embodiment.

FIG. 6 is an exploded perspective view showing the structure of a corner of the floor panel of the embodiment.

FIG. 7 is a sectional view taken along the line AA in FIG. 4;

FIG. 8 is a side view showing a part of another embodiment of the present invention in cross section.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Floor panel 2 ... Support leg 3 ... Lock nut 4 ... Base 5 ... Elevating body 6 ... Engagement mechanism 11 ... Corner 11a ... Edge part 11b ... Upper surface 31 ... Cylindrical part 32 ... Upper flange 32m ... Lower surface 33 ... Projection Article

Claims (3)

(57) [Claims] 1. A corner portion of a floor panel is placed on a support leg, and the upper surface of the corner portion is pressed downward by a lock nut screwed to the support leg to fix the floor panel on the support leg with a narrow pressure. A lock nut, which engages with a disc-shaped flange and an edge portion of adjacent corners provided on the lower surface of the flange to restrict rotation. A floor panel support device, comprising: a rotation restricting means that rotates; and a cylindrical part that is integrally provided on the lower surface side of the flange part and that is screwed to a support leg. 2. The floor panel supporting device according to claim 1, wherein the rotation restricting means comprises a ridge extending in a diameter direction of the flange portion and bulging downward from the flange portion. 3. A base having a support leg mounted on a floorboard,
An elevating body which is screwably supported on the base and which supports the floor panel from below is supported, and a lock nut is screwed to one of the base and the elevating body so as to be able to elevate and lower. The floor panel support device according to claim 1, wherein