JP3434002B2 - Unit supporting leg and double floor construction method using the same - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a unit support leg used to form a space between an existing foundation floor surface and various existing buildings such as an apartment house, and a unit support leg using the unit support leg. Concerning the construction method of the heavy floor.

[0002]

2. Description of the Related Art A double floor consists of a plurality of floor panels (floor boards) made of wood-based, metal-based, concrete-based, calcium silicate-based materials, etc. Built to support the height,
The space between the existing floor and the double floor is a space for passing various pipes such as water supply and drainage pipes, gas pipes, a space for passing wiring for electricity and communication, a space for heating and cooling, an air conditioner under the floor. It is used as a space for installing a ventilation duct, a space for laying a heat insulating material and a soundproofing material under the floor, and an air conditioning duct for enhancing a soundproofing effect or a heat insulating effect.

Conventionally, as a method of supporting such a double floor, for example, in Japanese Patent Laid-Open No. 3-17348, a rod-shaped leg portion and a receiving plate mounted on the upper end portion of the rod-shaped leg portion so as to be adjustable up and down. There is disclosed a method for constructing a dry double floor using a group of unit support legs and a group of fixed-length rectangular floor panels in combination. An example of a unit support leg used in this method is as shown in FIG. 7, which comprises a floor-contact base 104 made of an elastic material such as rubber and a support bolt 103 rotatably erected on the base 104. And a level adjusting nut 106 having an annular support portion 107 protruding from the lower end of the outer periphery.
06 is fitted and attached to the insertion hole 109 formed in the support plate 108. In this way, the support bolt 103 of the leg member 102 is screwed into the level adjusting nut 106 fitted into the insertion hole 109 of the support plate 108 to assemble the unit support leg 101. An adhesive sheet 110 is attached to the entire upper surface of the support plate 108 excluding the insertion hole 109, and a minus groove 105 is provided on the upper end surface of the support bolt 103. By inserting the tip of the tool for use and rotating the support bolt 103, the level adjusting nut 106 moves up and down, and the floor surface level of the floor panel supported by the support plate 108 can be adjusted.

An example of construction in the case of constructing a double floor using the unit support legs 101 assembled as described above is, for example, as shown in FIG. 8 , first, a room wall or a partition 112 is set to a predetermined height. A joist or joist unit 113 is provided along the one side, and one side of the floor panel 114 is supported thereon. The other edge of the floor panel 114 that is not in contact with the joist is attached to the unit support leg 101 arranged on the base floor 111 at a predetermined pitch in a cantilevered state. The unit support leg 101 and the floor panel 114 are attached by the adhesive sheet 11 attached to the upper surface of the support plate 108 of the unit support leg 101.
The floor panel 114 is pressure-bonded to the adhesive sheet 110 and temporarily fixed when the floor panel is laid. The insertion hole 109 of the support plate 108 of the unit support leg 101 is exposed from the edge of the floor panel 114.
The support bolt 103 is turned through to adjust the level of the floor panel 114 (or the upper surface position of the support plate 108). Adjacent floor panels also have unit support legs 10 already installed.
The floor panel 114 is mounted on the upper surface of the unit 1 with a predetermined gap left therebetween, and the other unit supporting legs 101 are similarly arranged and attached. Such work is repeated for each floor panel, the floor panel is constructed in a predetermined area, and the floor level is adjusted as necessary, and then the floor panel 114 is used to move the unit support leg 1
No. 01 support plate 108 is nailed to the floor panel 114.
Is fixed to the unit support leg 101. After that, after laying a plywood 115 on the floor panel 114 as necessary, a floor finishing material (not shown) such as a CF sheet, a carpet, a tatami mat, or a wooden floor material is laid, and the work is completed.

[0005]

As described above, in the conventional double floor construction using the unit supporting legs, the floor panel 114 is attached to the upper surface of the supporting plate 108 of the unit supporting leg 101 when the floor panel is laid. The floor panel 114 was fixed to the unit supporting leg 101 by crimping to the 110 and temporarily fixing it, and further after constructing the floor panel 114 in a predetermined area, by nailing the floor panel 114 to the support plate 108. . That is, since the pressure-sensitive adhesive sheet has no durability, it is used only for temporary fixing, and the floor panel and the unit supporting legs are finally fixed by nailing. However, even if nailing is used, walking vibrations are repeatedly applied after a long period of use, so that the fixing due to nailing may be loosened, resulting in floor ringing. When fixing the floor panel and the unit support legs, it is possible to use adhesive instead of nailing, but applying adhesive one by one on the upper surface of the support plate of the unit support leg only increases the work process. In addition, there is a problem that the operator's hands, clothes, and the surroundings are contaminated with adhesives, which requires subsequent processing and cleaning, resulting in a significant decrease in workability, which is not practical. .

If the support bolts of the unit support legs and the level adjusting nuts are not securely fixed after the floor is constructed, the level adjustment may be misaligned due to the rotation of the support bolts due to repeated walking on the floor or the like, and the screwing portion may be damaged. There are problems such as backlash, falling floor, squeaking of floor, and step difference between floor panels. Therefore, it is necessary to fix the support bolt of the unit support leg and the level adjusting nut with an adhesive or the like. The fixing of the support bolt and the level adjusting nut is performed after the floor level is adjusted. Therefore, if the fixing between the floor panel and the support plate of the unit supporting leg is performed when the floor panel is laid by using the adhesive as described above, the work of applying the adhesive is troublesome and the workability and the workability are low. Is significantly reduced.

Therefore, an object of the present invention is to apply an adhesive agent with good workability and to bond the supporting plate of the unit supporting leg and the floor panel with the adhesive agent without the problems of the above-mentioned conventional method. An object of the present invention is to provide a double floor construction method capable of almost permanently preventing floor squeal, and a unit support leg that can be suitably used for the double floor construction method. Further, an object of the present invention is to enable the fixing between the floor panel and the supporting plate of the unit supporting leg and the fixing of the supporting bolt and the level adjusting nut to be performed at the same time by one injection operation of the adhesive. In addition to improving workability and workability, the floor level adjustment accuracy is also improved. In addition, the floor adjustment is loose due to loosening of the support bolts due to repeated walking on the floor, etc. An object of the present invention is to provide a double floor construction method that does not cause problems such as dropping, floor squeal, and step difference between floor panels, and a unit support leg that can be suitably used for the double floor construction method. .

[0008]

In order to achieve the above object, according to the present invention, a floor contact base, a support bolt rotatably erected on the base, and an upper end of the support bolt. in the unit supporting leg comprising a height adjustably mounted support plate via a screwed level adjusting nut part, placed
Exposed between the floor panels and placed on the floor panel mounting surface
There is provided a unit support leg, wherein a groove-shaped or concave-shaped adhesive flowing portion extending in a vertical direction is formed on the upper surface of the support plate. Suitably, the pressure-sensitive adhesive sheet for temporary fixing and the adhesive flowing part may be provided on the upper surface of the support plate. In a preferred mode in which the floor panel and the unit support leg are fixed to each other at the same time as the support bolt of the unit support leg and the level adjusting nut are fixed by one-time adhesive injection work, the adhesive is spread over the level adjusting nut. A portion is formed to provide an adhesive reservoir, and the adhesive reservoir is configured to communicate with the adhesive flowing portion on the upper surface of the support plate.

Further, according to the present invention, there is also provided a method for constructing a double floor using the unit supporting legs as described above. The method for constructing a double floor according to the present invention includes a support plate which is rotatably erected on a floor base and is mounted on the upper surface of a support plate which is height-adjustable via a level adjusting nut. Placed
Exposed between the floor panels and over the floor panel mounting surface
The unit supporting legs having the extending groove-shaped or concave-shaped adhesive flow portion are arranged on the floor surface of the foundation floor at a predetermined pitch corresponding to the shape of the floor panel, and a plurality of floor panels are provided at the edge thereof. Is provided on the upper surface of the support plate of the unit support leg by arranging the unit support leg through a predetermined gap so as to be supported by the unit support leg and injecting an adhesive from the gap between adjacent floor panels. It is characterized in that the adhesive is supplied to the adhesive flowing portion or the adhesive reservoir above the level adjusting nut which communicates with the adhesive flowing portion to fix the floor panel to the unit supporting leg.

[0010]

As described above, the unit support leg of the present invention is provided on the upper surface of the support plate for supporting the floor panel ,
Exposed between floor panels to be placed and on the floor panel placement surface
It has a groove-shaped or concave-shaped adhesive flow part extending over .
Therefore, a plurality of floor panels are laid on the unit support legs arranged at a predetermined pitch on the floor surface of the foundation floor with a predetermined gap so that the edge portions thereof are supported, and each adjacent floor panel. When the adhesive is injected through the above gap between the support plates and the floor panel, the injected adhesive flows in the adhesive flow portion formed on the support plate of the unit support leg and then solidifies, so that the adhesion between the support plate and the floor panel is achieved. The area is increased and it is possible to reliably bond. Therefore, even if walking vibration is repeatedly applied to the floor panel, there is no fear of loosening as in the case of fixing with only nails, and floor squeaking can be almost permanently prevented. Also, instead of applying adhesive one by one on the upper surface of the support plate of the unit support leg,
After laying the floor panel, it is sufficient to inject the adhesive from the gap between the unit support leg arrangement portions between the adjacent floor panels, so that the workability is extremely good and the hand and clothes of the operator, compared with the coating work, Alternatively, the problem that the adhesive adheres to the surroundings and stains is greatly mitigated.

In a preferred mode of the unit support leg of the present invention, an expanding portion is formed at an upper portion of the level adjusting nut to provide an adhesive reservoir, and the adhesive reservoir is provided on the upper surface of the supporting plate. Of the adhesive flow section. With such a configuration, the adhesive is supplied between the floor panel and the support plate through the adhesive flow section and the support bolt and the level through the adhesive reservoir by one injection operation of the adhesive. Since it is also supplied to the threaded portion with the adjustment nut, the fixing between the floor panel and the support plate of the unit support leg and the locking of the support bolt (fixation of the support bolt and the level adjustment nut) are done at the same time. It can be carried out.

The form of the adhesive flow part formed on the upper surface of the support plate of the unit support leg can be roughly classified into the following two modes. (1) Form a groove on the upper surface of the support plate. The following modes are mentioned as a suitable mode of this groove part. (A) A groove that communicates with the adhesive reservoir formed on the level adjusting nut of the unit support leg, for example, a groove radially formed from the adhesive reservoir. The adhesive reservoir may be formed by expanding the upper part of the level adjusting nut itself, or by chamfering the upper part of the insertion hole of the support plate into which the level adjusting nut is fitted to form the expanded part. However, this may be used as an adhesive reservoir. (B) A groove in which a part of the groove is exposed in a gap between adjacent floor panels when the floor panel is laid, for example, a stripe groove.

(2) A recess is formed on the upper surface of the support plate with a height difference, and when a floor panel is laid, a gap is formed between the support plate and the floor panel, and the adhesive is flowed into this gap. As a preferable mode of forming such a recess, the following modes can be mentioned. (B) The upper surface of the support plate is partially ground to form a recess. In the present invention, the above-described mode of forming the adhesive flow part may be adopted alone, or these may be combined arbitrarily. In particular the double-sided pressure-sensitive adhesive sheet (hereinafter, simply viscosity
When using) that landing sheet by combining seen, good workability since tacking can be performed in the floor panels by utilizing a pressure-sensitive adhesive sheet, a preferred form. In addition, when laying the floor panel, it is possible to prevent the position of the unit support legs from slipping or falling during construction by crimping the floor panel to the adhesive sheet attached to the support plate and temporarily fixing it. can get.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in more detail below with reference to the embodiments shown in the accompanying drawings. 1 and 2 are
FIG. 1 shows an example in which radial grooves are formed as adhesive flow parts on the upper surface of the support plate of the unit support leg.
Reference numeral 1 is a unit support leg, and 20 is a floor panel supported thereby. The unit support leg 1 is almost the same as a conventionally known one in its basic configuration, and as shown in FIG. 1, a vibration isolation base 2 made of an elastic material such as rubber and a base 2 are provided. It is composed of a support bolt 3 that is movably erected, a level adjusting nut 6 that has an annular support portion 7 that projects from the lower outer periphery, and a support plate 8 that has an insertion hole 9 in the center.

The vibration-proof base 2 is made of a relatively hard elastic material such as rubber or synthetic resin, and is adapted to just fit to the foundation floor surface A of the concrete slab and to have a vibration-proof function. . A non-penetrating central hole (not shown) for inserting the base round bar of the support bolt 3 is formed in the central portion of the upper surface. On the other hand, support bolt 3
Is integrally provided with an annular flange portion 4 projecting laterally on the outer peripheral surface at a position spaced a predetermined distance upward from the lower end, a screw portion is formed above the flange portion 4, and a base end below the flange portion 4 is formed. The portion is formed into a round bar portion (not shown) having a circular cross section, and a groove portion 5 (in the example shown, a minus groove, for fitting the tip of the rotating tool into the top end surface of the support bolt 3 is It may be a plus groove or a square recess). Then, by inserting the base round bar portion of the support bolt 3 into the center hole of the vibration isolation base 2, the support bolt 3 is rotatably erected on the vibration isolation base 2 with the flange portion 4 as a support portion. It will be in the installed state.

The upper part of the insertion hole 9 of the support plate 8 is chamfered and expanded. The level adjusting nut 6 is the support plate 8
It is fitted to the support plate 8 by being fitted in the insertion hole 9 of the above, then expanding the upper part thereof, and partially burying it in the chamfered portion 10 of the support plate insertion hole 9. At the same time, an adhesive reservoir 12 is formed on the level adjusting nut 6. As described above, the unit support leg 1 is assembled as shown in FIG. 1 by screwing the upper end screw portion of the support bolt 3 into the level adjusting nut 6 fitted in the insertion hole 9 of the support plate 8. Further, as shown in FIG. 2, on the upper surface of the support plate 8 of the unit support leg 1, there is formed a radial groove 11 extending from the adhesive reservoir 12 to the periphery of the support plate 8, and the groove 11 is formed. Functions as an adhesive flow section.

Therefore, in this embodiment, the floor panel 20
After laying, the adhesive is poured into the adhesive reservoir 12, and the adhesive is supplied to the threaded portions of the support bolt 3 and the level adjusting nut 6 and is supported by the floor panel 20 through the radial groove 11. It is also supplied between the plate 8 and the support plate 8
Since it spreads to the peripheral portion of the floor, the fixing of the support bolt 3 and the level adjusting nut 6 as well as the fixing of the floor panel 20 and the supporting plate 8 can be achieved by one-time adhesive injection operation. In order to smoothly supply the adhesive to the threaded portion of the support bolt 3 and the level adjusting nut 6, one or a plurality of grooves are formed in the inner peripheral thread portion of the level adjusting nut 6 in the axial direction. It is preferable that each groove is stopped up to the vicinity of the lower end of the level adjusting nut 6 to form a non-penetrating groove to prevent the adhesive from dripping. Alternatively, the support bolt 3
It is also possible to form a groove in the axial direction at the upper end of the threaded portion of the.

FIG. 3 shows the layout of floor panels. After the unit support legs 1 are erected on the foundation floor at a predetermined pitch corresponding to the shape of the floor panel, the floor panel 20 is laid at a predetermined interval corresponding to the diameter of the support bolt 3 to form a unit. The support leg 1 supports the edge portion of the floor panel 20. The level of the floor panel 20 can be adjusted by fitting the tip of a rotary tool such as a screwdriver into the groove 5 formed on the top surface of the support bolt and rotating the support bolt 3. That is, by rotating the support bolt 3, the level adjusting nut 6 and the support plate 8 into which the level adjusting nut 6 is fitted are moved up and down to adjust the floor surface level of the floor panel 20 supported by the support plate 8. You can
After laying the floor panel 20 having a predetermined area and adjusting the floor level, the adhesive is injected into the adhesive reservoir 12 of the unit support leg 1 exposed in the gap B between the adjacent floor panels, In this way, the support bolt 3 and the level adjusting nut 6 are fixed and the floor panel 20 and the support plate 8 are fixed. After the adhesive is solidified, a siding material is laid on the entire surface of the laid floor, and a floor finishing material such as a CF sheet, a carpet, a tatami mat, and a wooden floor material is further constructed. It should be noted that the floor panel can be stabilized by nailing the important points prior to the adhesive injection.

As the adhesive to be used, epoxy type, urethane type, vinyl acetate type and the like can be used, but when fixing the support bolt 3 and the level adjusting nut 6 at the same time,
Epoxy and urethane adhesives are suitable. In order to make the adhesive flow sufficiently into the adhesive flow part, a low viscosity is preferable, but if the viscosity is too low, it is easily absorbed by the material, while if the viscosity is too high, the flowability is poor and in either case However, it is not preferable because it is difficult for the adhesive to reach the peripheral portion of the support plate. The viscosity of the adhesive depends on the shape of the adhesive flow part,
Select in consideration of area, material, etc. The adhesive is put in a container such as a tube or a pump, pressed by a nozzle having a narrow tip, pushed out, and injected into an adhesive reservoir or an adhesive flowing part.

FIG. 4 shows a modified example of the embodiment shown in FIGS. 1 and 2, which differs from the embodiment described above in that the adhesive sheets 13 are attached to the opposite sides of the upper surface of the support plate 8 of the unit support leg. different. The adhesive sheet 13 is usually attached after forming the groove 11 on the upper surface of the support plate 8, but the adhesive sheet may be attached first and then the groove may be formed later. In this way, by sticking the adhesive sheet 13 on both sides of the upper surface of the support plate 8, the floor panel can be attached to the adhesive sheet 1 when laying the floor panel.
It can be crimped to 3 and temporarily fixed, and the position of the unit support leg can be prevented from shifting or falling during construction,
The advantage is that the workability of double floor construction is improved.

FIG. 5 shows a modification in which the groove form of the embodiment shown in FIGS. 1 and 2 is changed, and a part of the groove is formed in the gap B between the adjacent floor panels 20 when the floor panels are laid. A plurality of parallel striped grooves 11 are formed on the upper surface of the support plate 8 so as to be exposed. In the case of this embodiment, a nozzle for injecting an adhesive is inserted into the gap B between the floor panels 20, and the adhesive is injected while shifting the position as shown by the broken line arrow in the figure. In the case of this embodiment as well, the groove communicating with the adhesive reservoir formed in the upper portion of the level adjusting nut 6 may be provided in parallel with the other groove 11. Further, it is also possible to provide grooves for connecting the respective grooves, and for example, the grooves can be formed in a grid pattern.

In any of the above-mentioned embodiments, the groove forming the adhesive flow part has a depth of 0.5 to 3.0 m.
m, width 2.0-5.0 mm groove is suitable, in the preferred embodiment groove 1.5 mm deep and 4.0 mm wide. Further, the shape of the groove is arbitrary such as a square groove and a V groove.

FIG. 6 shows another embodiment in which a gap is formed between the support plate and the floor panel when the floor panel is laid, and the adhesive is caused to flow into the gap. In the case of this embodiment, the upper surface of the support plate 8 is ground to form the recess 15 having a depth of about 0.1 to 1.0 mm. Also in the case of this embodiment, when the floor panel is laid by using the unit supporting legs to which the supporting plate 8 is attached, a gap is formed between the upper surface of the supporting plate and the floor panel, and the adhesive is applied from the gap between the floor panels. When the adhesive is poured into the puddle, the adhesive penetrates into the threaded portion of the support bolt and the level adjusting nut and also penetrates and diffuses into the above-mentioned gap to firmly bond the floor panel and the support plate, and at the same time, to the support bolt and the level. Firmly join between the adjusting nuts. Further, the stepped portion as in this embodiment, by some have the sheet has a thin, without the adhesive flows down the surround four circumferential support plate upper surface, the advantage of not contaminating the surroundings obtained .

[0024]

As described above, according to the unit support leg of the present invention and the double floor construction method using the same, the following effects and advantages are obtained. (A) As described above, the unit support leg of the present invention is a floor panel mounted on the upper surface of the support plate used for supporting the floor panel.
Groove exposed between the floor and extending over the floor panel mounting surface
Since the adhesive having a rectangular or concave adhesive flow part is injected from the gap between the adjacent floor panels, the adhesive flows in the adhesive flow part formed on the support plate of the unit support leg and then solidifies. , The adhesion area between the support plate and the floor panel is increased, and reliable adhesion can be achieved. Therefore, even if walking vibration is repeatedly applied to the floor panel, there is no fear of loosening as in the case of fixing with only nails, and floor squeaking can be almost permanently prevented. (B) Instead of applying adhesive one by one on the upper surface of the support plate of the unit support legs, after laying the floor panels, inject the adhesive from the gap between the unit support leg arrangement portions between the adjacent floor panels. Therefore, the workability is extremely good, and the problem that the adhesive adheres to the operator's hand, clothes, or the surroundings and stains is greatly alleviated as compared with the coating work. (C) An adhesive is formed by forming an expanded portion on the upper part of the level adjusting nut to form an adhesive reservoir and by composing the adhesive reservoir to communicate with the adhesive flowing portion on the upper surface of the support plate. By a single injection work, the adhesive is supplied between the floor panel and the support plate through the adhesive flow section, and also through the adhesive reservoir at the screwing section between the support bolt and the level adjusting nut. Since they are supplied at the same time, the fixing between the floor panel and the supporting plate of the unit supporting leg and the fixing of the support bolt and the level adjusting nut can be performed at the same time. Therefore, workability and workability are improved, and the floor surface level adjustment accuracy is also increased. Further, there is no problem such as a level adjustment error caused by loosening of the support bolts due to repeated walking on the floor surface, a floor drop due to looseness of the screwed portion, a floor squeal, and a step between floor panels. (D) By attaching the adhesive sheet to the support plate of the unit support legs together with the adhesive flow section, the floor panel can be pressure-bonded to the adhesive sheet and temporarily fixed during installation of the floor panel. The position of the unit support leg can be prevented from shifting or falling down, and the workability of double floor construction can be improved.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional side view showing a state in which a floor panel is supported by unit support legs according to an embodiment of the present invention.

FIG. 2 is a plan view showing a state where a floor panel is supported by the unit support legs of the embodiment shown in FIG.

FIG. 3 is a plan view showing an example of an arrangement state of a unit support leg and a floor panel of the present invention.

FIG. 4 is a plan view showing another embodiment of the support plate of the unit support leg of the present invention.

FIG. 5 is a plan view showing still another embodiment of the supporting plate of the unit supporting leg of the present invention with the floor panel arranged.

FIG. 6 is a perspective view showing still another embodiment of the support plate of the unit support leg of the present invention.

FIG. 7 is an exploded perspective view of a conventional unit support leg.

FIG. 8 is a cutaway perspective view showing a state in which a floor panel is constructed using conventional unit support legs.

[Explanation of symbols]

1, 1a Unit support leg, 2 Anti-vibration base, 3 Support bolt, 4 Flange part, 5 Groove part, 6 Level adjusting nut, 7 Support part, 8 Support plate, 9
Insertion hole, 10 chamfered part, 11 groove (adhesive flow part), 12 adhesive reservoir, 13 adhesive sheet, 1
4,15 recesses, 20 floor panels, A foundation floor,
B gap

─────────────────────────────────────────────────── ─── Continuation of front page (56) References Kaihei 5-83161 (JP, U) Kaihei 3-66344 (JP, U) Kaihei 4-116537 (JP, U) Kaihei 5- 83163 (JP, U) (58) Fields surveyed (Int.Cl. ⁷ , DB name) E04F 15/00 101 E04F 15/024 603

Claims (4)

(57) [Claims] 1. A height can be freely adjusted via a floor-contacting base, a support bolt rotatably erected on the base, and a level adjusting nut screwed to an upper end of the support bolt. Placed on a unit support leg consisting of a mounted support plate
Exposed between floor panels and extending over the floor panel mounting surface
A unit support leg, wherein a groove-shaped or concave-shaped adhesive flowing portion is formed on the upper surface of the support plate. 2. The unit support leg according to claim 1 , wherein the support plate has an adhesive sheet for temporary fixing and an adhesive flow section on the upper surface of the support plate. 3. An expanding portion is formed in an upper portion of the level adjusting nut to provide an adhesive agent reservoir, and the adhesive agent reservoir communicates with an adhesive agent flowing portion on the upper surface of the support plate. Item 3. The unit support leg according to item 1 or 2 . 4. A floor panel placed on the upper surface of a support plate rotatably erected on a floor base so as to be adjustable in height through a level adjusting nut through a level adjusting nut. Between
Grooves that are exposed and extend over the floor panel mounting surface or
The unit support legs having concave adhesive flow parts are arranged on the floor surface of the foundation floor at a predetermined pitch corresponding to the shape of the floor panel, and a plurality of floor panels are provided at the edges thereof with the unit support legs. Is placed through a predetermined gap so as to be supported by the adhesive, and the adhesive is injected from the gap between the adjacent floor panels to form an adhesive flowing part or the adhesive flowing part provided on the upper surface of the supporting plate of the unit supporting leg. A method of constructing a double floor, characterized in that an adhesive is supplied to an adhesive reservoir above the level adjusting nut which communicates with the floor adjusting panel to fix the floor panel to the unit supporting leg.