JP5681918B2 - Double floor structure - Google Patents

Description

  The present invention relates to a double floor structure that supports a floor panel via a support leg on a foundation floor such as a concrete slab.

  In recent years, a double floor structure has been adopted for many buildings such as apartment houses and office buildings. In this double floor structure, a space is formed between the foundation floor such as a concrete slab and the floor panel to enhance sound insulation, and equipment piping and wiring can be provided in the space. It has become.

As this type of double floor structure, there are structures using the support legs described in Patent Document 1 and Patent Document 2. These double floor structures form a space between the foundation floor and the floor panel by arranging support legs on the foundation floor and disposing the floor panel on the foundation floor via the base panel.
Further, in such a double floor structure, the sound insulation is ensured by separating the floor panel and the foundation floor by the space portion, and the support leg that supports the floor panel is made of an elastic member such as a vibration-proof rubber. Even when an object is dropped on the floor using a floor contact pedestal, the drop impact is attenuated to make it difficult to transmit to the foundation floor, improving sound insulation and impact mitigation performance.

Furthermore, in an apartment house or the like, in order to secure a wide indoor space, a low floor double floor structure in which the underfloor space is narrowed and the floor surface is lowered is desired.
In the support leg used in the double floor structure of Patent Document 2, the central portion of the metal receiving member attached to the lower surface side of the floor panel is deformed upward to form a convex portion. By storing a part of the floor contact pedestal in a recess formed on the back side of the part, a double floor structure with a low floor is configured. In this case, the receiving member is made of metal, and accordingly, the plate thickness can be reduced and the floor can be further lowered.
However, in the double floor structure shown in FIG. 3 of Patent Document 2, a support panel for nailing is provided on the receiving member, and the support panel is fixed by nailing from the upper surface side of the base panel. The height of the double floor structure increased by the thickness.

  Further, in the double floor structure shown in FIG. 4 of Patent Document 2, the support panel provided in the receiving member is omitted, a storage hole is formed in the base panel, and the receiving member is disposed in the storage hole. We are trying to lower the floor. In this case, after nailing from the lower surface side of the receiving member to fix the receiving member and the base panel, it must be installed on the foundation floor. Therefore, the individual base panels are arranged in a separated state, and the stability is poor, and the work of aligning the base panels becomes complicated and inefficient.

In addition, since the receiving member is generally 88 mm square or 98 mm square in size, the base panel must be installed with an interval of about 10 to 15 mm. The convex part of the member could not be arranged between the base panels. This was a limitation by arranging five support legs in the length direction of the 2 × 6 (600 mm × 1820 mm) base panel and arranging these base panels in a staggered manner.
In addition, if the base panel is installed with a gap of 15 mm or more, the base panel cannot be completely mounted on the receiving member, and the horizontal connection between the base panels cannot be performed. First, a litter board is required.

JP-A-5-321443 JP 2009-191554 A

  The present invention has been made in view of such circumstances, and provides a double floor structure in which the floor is lowered and the workability during construction is improved.

The double floor structure according to the present invention includes a floor contact pedestal disposed on a foundation floor such as a concrete slab, a support bolt that is vertically supported by the floor contact base, and an internal thread portion that engages with the support bolt. And a support plate having a support plate that moves up and down and adjusts the height in accordance with the rotation operation, and laying a floor panel on the base panel supported by the plurality of support legs, And the floor panel is a double floor structure that forms a space portion, and the support plate is formed with a protrusion lower than the thickness of the base panel at the center, and a flange portion around the protrusion a plurality of said base panel placed in portions in, while being aligned in contact with at least a portion the side of the convex portion of the side surface of the plurality of base panels, the contact floor on the back side of the convex portion Concave part that can accommodate part of the base Characterized in that it is formed.

In this double floor structure, the convex part of the support plate is sandwiched between the base panels, and a part of the floor contact pedestal can be stored in the concave part formed on the back side of the convex part, thereby reducing the floor. Can be achieved.
And in this case, because the base panel can be easily aligned at a predetermined location by placing the side surface of the base panel in contact with the side surface of the convex portion provided on the support plate of the support leg, Workability at the time of construction can be improved.

Moreover, the double floor structure of this invention WHEREIN: It is good for the height of the said convex part of the said support plate to be set to 1/3-2/3 of the thickness of the said base panel.
In this case, it is possible to secure a margin for adjusting the height of the base panel while making it possible to store a part of the floor contact pedestal in the concave portion on the back side of the convex portion of the support plate. More preferably, the height of the convex portion is set to about ½ of the thickness of the base panel.

Furthermore, in the double floor structure of the present invention, an adhesive reservoir surrounding the female screw portion may be formed in a concave shape on the upper end surface of the convex portion of the support plate.
After the support plate is adjusted to a desired height, the gap between the support bolt and the female screw portion of the support plate is fixed with an adhesive in order to fix the height. At that time, if the adhesive spreads and flows on the support plate, a sufficient amount of the adhesive cannot be interposed in the gap, and the fixing between the support bolt and the female screw portion may be insufficient. Therefore, an adhesive reservoir for holding the adhesive is provided on the support plate so that the adhesive can easily enter between the support bolt and the female screw portion of the support plate, so that the support plate can be securely fixed.

  Further, in the double floor structure of the present invention, the convex portion of the support plate is formed in a circular shape in plan view, and the four corners of the base panel are cut into a triangular shape, and one side of the base panel Each of the spaces formed by the side surfaces and the cut-out side surfaces at the four corners of the two base panels arranged along the sides, or the cut-out side surfaces at the four corners of the four base panels. The protrusions may be arranged in each space.

  Supported on each of the joint portion formed by the side surface of one side of the base panel and the four corner side surfaces of the two base panels, or the joint portion formed by the four corner side surfaces of the four base panels By arranging the circular convex part of the plate, the positioning work between the support leg and the base panel is facilitated, and multiple locations around the base panel are aligned by the convex part of the support leg. The joints between them can be evenly arranged.

Conventionally, the base panel has been formed in a size of 2 × 6 scales, and the joint portion composed of these three base panels has been arranged every other support leg. While making the dimensions of 2 x 3 or 2 x 2 and cutting out the four corners of the base panel, 3 to 3 for each support leg while keeping the joint between the base panels at 10 to 15 mm. A seam portion composed of four base panels can be arranged.
Moreover, since the joints between the respective base panels can be formed narrow by arranging the convex portions of the support plate as described above, it is also possible to provide the floor panel directly on the base panel without providing a scraping plate. .
As described above, the support leg and the base panel can be efficiently arranged by a simple structure that is easy to manufacture, such as a circular convex portion and a cutout shape at the four corners.

Furthermore, in the double floor structure of the present invention, it is preferable that a guideline for aligning a part of the peripheral edge of the base panel is provided on the flange portion of the support plate.
In this case, the edge of the base panel can be installed along the guideline, and the alignment work between the support leg and the base panel can be facilitated during construction of the double floor structure.

Moreover, the double floor structure of this invention WHEREIN: It is good for the said flange part of the said support plate to provide the projection part which contacts the edge of the said base panel.
And the said projection part is good to be formed by the raising part which cut and raised the edge part of the said flange part, Furthermore, it is good for the raising part to be raised diagonally from the surface of the said flange part.
In this case, the rising portion of the support plate can be easily formed by cutting and raising the end portion of the flange portion. In addition, by forming the raised part obliquely from the surface of the flange part, the contact part between the edge of the raised part and the edge of the ground panel within the limited range of the thickness of the ground panel The base panel can be brought into contact with each other for alignment, and the base panel can be reliably aligned without working according to the guideline.

  According to the present invention, the convex portion of the support plate is disposed between the base panels, and a part of the floor contact pedestal can be accommodated in the concave portion provided on the back side of the convex portion. Can be floored. In addition, the base panel can be brought into contact with the convex portions of the support plates constituting the plurality of support legs, and these can be accurately aligned, improving workability during construction of the double floor structure. be able to.

It is a top view of the floor which shows one Embodiment of the double floor structure of this invention. It is the partial cross section figure which expanded the support leg of the double floor structure of FIG. It is a top view of the support plate which comprises the support leg of FIG. It is an upper surface part of the support leg of FIG. It is a top view of the floor of the double floor structure which shows other embodiment. It is a top view of the support plate which shows other embodiment. It is a figure explaining the support plate which shows other embodiment, (a) is a top view, (b) is sectional drawing. It is a figure which shows other embodiment of the double floor structure of this invention. It is a top view of the floor which shows the conventional double floor structure.

Hereinafter, an embodiment of the double floor structure of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 and 2, the double floor structure 100 of the present embodiment has a plurality of support legs 10 arranged on the foundation floor 1 of a concrete slab, and the floor is placed on the support legs 10 via the base panel 2. By arranging the panel 3, a space 4 is formed between the foundation floor 1 and the floor panel 3.

As shown in FIG. 2, the support leg 10 includes an anti-vibration rubber 11 (a floor contact pedestal) disposed on the foundation floor 1, a support bolt 12 supported perpendicularly to the anti-vibration rubber 11, and a support bolt 12. And a support plate 13 that moves up and down as the support bolt 12 rotates.
The anti-vibration rubber 11 is provided in the shape of a truncated cone, and attenuates the impact from the floor panel 3 to suppress the transmission to the foundation floor 1, thereby improving the sound insulation and impact relaxation. A support bolt 12 is rotatably supported by the anti-vibration rubber 11.
A tool insertion groove 12 a into which a Phillips screwdriver or the like can be inserted is formed at the upper end of the support bolt 12. By rotating the support bolt 12, the support plate 13 can be moved in the vertical direction, and the height of the base panel 2 from the foundation floor 1 can be adjusted.

  The support plate 13 is formed of a metal plate, a plastic plate, or the like. In the present embodiment, for example, it is formed of a rectangular metal plate having a thickness of 2 to 3 mm, and the central portion of the support plate 13 has a circular shape in plan view (the plan view here is the support plate 13). The cup-shaped convex part 14 protrudes by pressing so that a part of the anti-vibration rubber 11 is accommodated in the concave part 15 formed simultaneously on the back side of the convex part 14. A recess 15 having an inner diameter that is sufficiently larger than the outer diameter of the vibration-proof rubber 11 is formed so as to be possible.

The height of the convex portion 14 is formed lower than the thickness of the base panel 2. When the thickness of the ground panel 2 and the height of the convex portion 14 are the same, when the support plate 13 is moved downward, the head of the support bolt 13 protrudes above the upper surface of the ground panel 2 and interferes with the floor panel 3. Therefore, even if the vertical position of the support plate 13 is adjusted, it is preferable to set the dimensions so that the head of the support bolt 12 does not protrude from the upper surface of the support panel 2. In this case, the height of the convex portion 14 of the support plate 13 is preferably set to 1/3 to 2/3 of the thickness of the base panel 2, and the difference between the thickness of the base panel 2 and the convex portion 14 is This is a margin for adjusting the height of the base panel 2. More preferably, the height of the convex portion 14 is about ½ of the thickness of the base panel 2. In the present embodiment, the height of the convex portion 14 is 10 mm, which is half that of the base panel 2 having a thickness of 20 mm.
In addition, a female screw portion 16 that engages with the male screw portion 12b of the support bolt 12 is formed at the center of the convex portion 14 by burring that is bent downward. An adhesive reservoir 17 surrounding the female screw portion 16 is formed on the upper end surface of the convex portion 14 in a concave shape that is slightly smaller than the peripheral portion.

The flange portion 18 provided on the outer edge of the lower end of the recess 14 of the support plate 13 supports the base panel 2 from below and drives the self-tapping screw 5 from the upper surface side of the base panel 2 with a tool such as an electric screwdriver. The panel 2 can be fixed.
On the upper surface of the flange portion 18, a large number of lattice-shaped concave grooves and holes are formed in order to stabilize the biting of the self-tapping screw 5 when the self-tapping screw 5 is driven. In the support plate 13 of the present embodiment, a large number of holes 19 are formed in the flange portion 18 as shown in FIG.
Further, the flange portion 18 is reinforced by four ribs 18a formed to protrude to the back surface side. A double-sided tape and a release paper (not shown) for temporarily fixing the base panel 2 are provided on the upper surface of the flange portion 18.

The double floor structure 100 is constructed using the support legs 10 thus configured.
As shown in FIG. 1, a plurality of support legs 10 are erected side by side in a room partitioned by walls on both sides at regular intervals. Then, the release paper on the surface of the support plate 13 is peeled to expose the double-sided tape, and the base panel 2 is placed thereon.

For the base panel 2, a rectangular particle board in which wood chip obtained from waste materials or the like is hardened with an adhesive is used. As shown in FIG. 1 and FIG. 4, the base panel 2 is arranged vertically with its long sides parallel to each other, and the joints 20 between the short sides are adjacent to each other and are half the length of the long sides. They are arranged in a shifted arrangement. Each base panel 2 has a shape in which four corners are cut into triangles to form a notch 2a (notched side face), and the base panel 2 has a long side surface and two long sides. By placing the side surface of the cutout portion 2 a of the base panel 2 in contact with the convex portion 14 provided on the support plate 13, a certain gap (straight joint portion 22) is provided.
At this time, the convex portions 14 of the support plate 13 are arranged at the respective intersections 21 where the straight joints 22 of the joints 20 intersect each other in a T-shape, and the three base panels 2 constituting the space of the intersections 21. It will be inscribed in the side.

  For example, as in the conventional double floor structure 300 shown in FIG. 9, the support legs 310 are placed at intervals of 1 and a half (455 mm) on a base panel 302 having a size of 2 × 6 (600 mm × 1820 mm). In the case where the base panels 302 are arranged, the joint portion of the base panel 302 is constituted by three base panels 302 (intersection 321 of the joint 320) is formed every other support leg 310. Therefore, the double floor structure 300 must be configured by arranging the support plates 313 at the straight joints 322 and the intersections 321 formed by the two base panels 302.

In the present embodiment, the convex portion 14 of the support plate 13 is stored in the three joint portions (intersection portion 21 of the straight joint portion 22) of the base panel 2, so that the base is 2 × 3 (600 × 910 mm). Using the panel 2, the support leg 10 is installed on all the joints of the base panel 2, and the corners of the four corners of the base panel 2 are cut diagonally, so that the triangular space that can accommodate the convex portions 14 of the support plate 13 is accommodated. Is formed at the joint portion of the base panel 2.
Further, the conventional 2 × 6 base panel 302 is replaced with a 2 × 3 base so that the support plate 13 does not have to be disposed on the straight joint portion 22 constituted by the two base panels 2. By forming the intersecting portion 21 of the joint 20 with the three base panels 2 to form a triangular space, the convex portion 14 of the support plate 13 can be stored in each of these spaces. it can.
In addition, as shown in the double floor structure 200 of FIG. 5, each of the square spaces formed by the side panels formed by forming the base panel 202 in a 2 × 2 scale and notching the four corners of the four base panels 202. You may store the convex part 14 of the support plate 13 in (intersection part 221 of the straight joint part 222), respectively.

  Next, the self-tapping screw 5 is driven into the support plate 13 from the upper surface side of the base panel 2 to fix the base panel 2 to the support leg 10. At this time, the tool is engaged with the tool insertion groove 12a of the support bolt 12 arranged on the joint 20 formed between the base panels 2, and the support bolt 12 is rotated around the axis. Thereby, the support plate 13 can be moved up and down to finely adjust the height of the foundation panel 2 from the base floor 1 and adjust to the construction height.

The adhesive 6 is supplied to the tip portion of the support bolt 12 protruding from the support plate 13, and the adhesive 6 is injected into the engaging portion between the support bolt 12 and the female screw portion 16 of the support plate 13 to fix the support bolt 12. The height of the base panel 2 is not changed. As described above, since the concave adhesive reservoir 17 is provided around the female thread portion 16 of the support plate 13, the adhesive 6 is held by the adhesive reservoir 17, and the support bolt 12 and the support plate 13 are connected to each other. The adhesive 6 can easily enter between the female screw portion 16.
Then, the floor plate 3 is laid on the surface of the base panel 2 to finish the double floor structure 100.

As described above, in the double floor structure 100 of the present embodiment, the support plate 13 of the support leg 10 is configured to be thin, and the convex portion 14 of the support plate 13 is disposed at the intersection 21 of the joint 20 of the base panel 2. Since a part of the vibration-proof rubber 11 can be stored in the concave portion 15 provided on the back side of the convex portion 14, it is possible to reduce the floor of the double floor structure.
In addition, since the base panel 2 can be brought into contact with the side surface 14a of the convex portion 14 of the support plate 13 constituting the support legs 10 arranged on the foundation floor 1, the double floor structure Workability at the time of construction can be improved.
Furthermore, alignment work between the support leg 10 and the support panel 2 can be easily performed by a simple structure that is easy to manufacture, such as a convex portion 14 having a circular shape in plan view of the support plate 13 and a shape in which the four corners of the base panel 2 are notched. Thus, the support panels 2 can be efficiently arranged evenly.

In addition, this invention is not limited to the thing of the structure of the said embodiment, In a detailed structure, a various change can be added in the range which does not deviate from the meaning of this invention.
For example, alignment portions such as the guideline 31 and the rising portion 41 can be provided on the support plate of the support leg as in the support plates 30 and 40 shown in FIGS.
Like the support plate 30 shown in FIG. 6, by providing a guideline 31 for aligning a part of the peripheral edge of the base panel on the surface of the flange portion 18, the base panel is aligned along the guideline 31. The edge can be aligned as indicated by arrow A, and the alignment work between the support leg and the base panel can be facilitated during construction of the double floor structure.

Further, like the support plate 40 shown in FIG. 7, the rising portion 41 is provided by providing a rising portion 41 (protruding portion) that cuts and raises the end portion of the flange portion 18 to contact the edge of the base panel 2. As shown by a two-dot chain line, the end edge of the base panel 2 can be brought into contact with the end portion of the base plate 2 for alignment, so that alignment can be ensured.
In this case, the rising portion 41 is formed by cutting up the end portions of three sides of the four sides of the square flange portion 18 and can be easily formed. In addition, each base panel 2 is aligned by abutting against the side surface 14a of the convex portion 14 and is also abutted and aligned with both ends of the rising portion 41, so that the base panel 2 can be easily aligned. can do.
In addition, the rising portion 41 may be formed perpendicular to the surface of the flange portion 18, but as shown in FIG. Within the limited range of the thickness of 2, the contact portion between the end portion of the rising portion 41 and the edge of the base panel can be lengthened, and alignment can be performed more reliably.
In addition to such a raised portion, a part of the flange portion 18 may protrude upward to form a protrusion.
Further, when providing these protrusions, not only the protrusions but also the guide lines 31 may be provided.

Moreover, although the anti-vibration rubber | gum 11 was made into truncated cone shape in the said Example, the shape of the anti-vibration rubber | gum 11 can be changed according to a use purpose. For example, the anti-vibration rubber 11A shown in FIG. 8 (a) is excellent in load bearing performance and is a position that requires strength, such as supporting partition walls of each room arranged on the base panel in the floor advance construction method. Can be used. Further, the anti-vibration rubber 11B having the bellows-like multi-stage outer peripheral surface shown in FIG. 8 (b) has excellent impact mitigation performance, and even when an object is dropped on the floor surface, the drop impact is not affected. It is attenuated to make it difficult to transmit to the foundation floor, and sound insulation and impact mitigation performance can be improved.
Even in this case, a part of the vibration isolating rubbers 11A and 11B can be accommodated in the recess 15 of the support plate 13, and the floor of the double floor structure can be reduced. In addition, since the base panel 2 can be brought into contact with the side surface 14a of the convex portion 14 of the support plate 13 for alignment, workability during construction can be improved. Other configurations are the same as those of the above-described embodiment, and common portions are denoted by the same reference numerals and description thereof is omitted.

  Moreover, the convex part 14 of the support plate 13 should just be the shape in which the side surface of the convex part 14 of the support plate 13 inscribed in the side surface of each base panel 2 which comprises the cross | intersection part 21, and planar view according to the cross | intersection part 21 Although it may be formed so as to be a triangle, it is easier to produce the convex portion 14 having a circular shape in plan view as in the above embodiment.

DESCRIPTION OF SYMBOLS 1 Base floor 2,202,302 Ground panel 3 Floor panel 4 Space part 5 Self-tapping screw 6 Adhesive 10,310 Support leg 11 Anti-vibration rubber (floor contact base)
DESCRIPTION OF SYMBOLS 12 Support bolt 12a Tool insertion groove 13, 30, 40 Support plate 14 Convex part 14a Side surface 15 Concave part 16 Female thread part 17 Adhesive reservoir 18 Flange part 18a Rib 19 Hole 20,220,320 Joint 21,221,321 Crossing part 22, 222,322 Straight joint 31 Guideline 41 Start-up part 100,200,300 Double floor structure

Claims (8)

A flooring pedestal arranged on a foundation floor such as a concrete slab, a support bolt vertically supported by the flooring pedestal, and an internal thread portion engaging with the support bolt, and moving up and down along with its rotational movement And a support plate having a support plate for adjusting the height, and by laying a floor panel on a base panel supported by the plurality of support legs, a space portion is formed between the foundation floor and the floor panel. The support plate is formed with a convex portion lower than the thickness of the base panel at a center portion, and a plurality of the base panels are partly provided at a flange portion around the convex portion. It is placed, while being aligned in contact with at least a portion the side of the convex portion of the side surface of the plurality of base panels, some can store a recess of the contact floor pedestal on the back side of the projections Features that are formed Double floor structure.   The double floor structure according to claim 1, wherein the height of the convex portion of the support plate is set to 1/3 to 2/3 of the thickness of the base panel.   The double floor structure according to claim 1 or 2, wherein an adhesive reservoir surrounding the female screw portion is formed in a concave shape on an upper end surface of the convex portion of the support plate.   The convex portion of the support plate is formed in a circular shape in plan view, and the four corners of the base panel are cut into a triangle shape, and are arranged along one side of the base panel and along the side. The convex portions are respectively arranged in the spaces formed by the cut-out side surfaces of the four corners of the two base panels or the spaces formed by the cut-out side surfaces of the four corners of the four base panels. The double floor structure according to any one of claims 1 to 3, wherein:   The guideline for aligning a part of edge of the peripheral edge of the foundation panel is provided in the flange part of the support plate, The change according to any one of claims 1 to 4 characterized by things. Double floor structure.   6. The double floor structure according to claim 1, wherein the flange portion of the support plate is provided with a protrusion that abuts an edge of the base panel.   The double floor structure according to claim 6, wherein the protruding portion is formed by a rising portion obtained by cutting and raising an end portion of the flange portion.   The double floor structure according to claim 7, wherein the rising portion is provided obliquely from the surface of the flange portion.

Images