JPH102094A - Floor panel integrated heat insulation material with sound insulation material, and execution method of double floor using it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To construct a double floor which is excellent in heat insulation and noise insulation, stable in structure and free from any steps between floor panels or settlement of the floor surface with excellent execution quality. SOLUTION: A floor panel 1 comprises a surface material 2 and a plastic foamed body 3 which is integratedly connected to one side of the surface material 2 and has heat insulation and noise insulation. A recessed part 4 comprising an exposed part of the surface material formed at the prescribed part of an edge part of the floor panel 1 is arranged on a supporting plate 110 mounted on a supporting bolt 104 of unit supporting legs 101 arranged on a foundation floor 120 at the prescribed pitch in a height adjustable manner to install the floor panel 1. In addition, the plastic foamed body 5 is filled in a gap W between the installed floor panels 1. A part to be supported by the unit supporting legs 101 of the floor panels 1 may be the plastic foamed body 3 part which is harder than the other parts in place of the recessed part 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor panel integrated with a heat insulating and sound insulating material and a method for constructing a double floor using the same.

[0002]

2. Description of the Related Art A double floor has a plurality of floor panels (floor boards).
Is supported at a certain height by a plurality of support legs arranged on a foundation floor.
No. 17348 and Japanese Utility Model Laid-Open No. 4-1156537, a unit support leg group including a rod-shaped leg and a receiving plate mounted on the upper end of the rod-shaped leg so as to be vertically adjustable, and a fixed-size rectangle and / or square A method of constructing a dry double floor using a combination of the above floor panels is disclosed. An example of a conventionally known unit support leg is as shown in FIG. 10, and a floor base 102 made of a relatively hard elastic material such as rubber or synthetic resin and a rotatably erected standing base 102. Level adjusting nut 108 having an annular supporting portion 109 protruding laterally at a substantially central portion of the outer periphery, and the level adjusting nut 10 at a central portion.
8 has a square or rectangular support plate 110 having an insertion hole 111 to be fitted therein.

[0003] The supporting bolt 104 is a ring-shaped flange 1 projecting laterally on the outer peripheral surface at a predetermined distance upward from the lower end.
The support bolt 104 is provided with a screw portion above the flange portion 105, and a groove 107 for fitting the tip of a rotating tool is formed on the top end surface of the support bolt 104. Then, by inserting the base round bar portion 106 of the support bolt 104 into the central hole 103 of the floor support base 102, the support bolt 104 is rotatable with respect to the floor base 102 with the flange portion 105 as a support portion. It will be in the state of standing upright. In addition,
A washer may be interposed between the flange 105 and the upper surface of the floor base 102. On the other hand, the level adjusting nut 108 is fitted into the insertion hole 111 of the support plate 110, and is firmly attached to the support plate 110 by expanding its upper part. At the same time, an adhesive reservoir 113 is formed above the level adjusting nut 108. Note that one or several grooves are formed in the longitudinal direction on the inner peripheral thread of the level adjusting nut 108 or the outer peripheral thread of the support bolt 104 so that the adhesive easily flows. Thus, the support plate 11
Level adjusting nut 10 fitted in the insertion hole 111
By screwing the upper end of the screw portion of the support bolt 104 into 8, the unit support leg 101 is assembled as shown in FIG. Unit support leg 101 having such a structure
Is inserted into the groove 107 of the top end surface of the support bolt 104 by inserting the tip of a rotation tool such as a screwdriver into the support bolt 104.
, The level adjustment nut 108 moves up and down, and the floor level of the floor panel supported by the support plate 110 can be adjusted.

[0004] An example of construction in the case of constructing a double floor using the unit supporting legs 101 assembled as described above, first, as shown in FIG. 11, is to set a predetermined height of a room wall or a partition 121. A joist (or joist unit) 122 is provided along, and one side of the floor panel 123 is supported thereon. The other edge of the floor panel 123 which does not contact the joist is connected to the foundation floor (concrete slab) 12 at a predetermined pitch.
The unit is mounted on the unit supporting leg 101 disposed on the top of the unit 0 in a state of being held in a cantilever manner. The unit support leg 101 and the floor panel 123 are attached to the support plate 110 of the unit support leg 101.
Performed via a double-sided adhesive sheet 112 or the like attached to the upper surface,
When the floor panel is laid, the floor panel 123 is attached to the double-sided adhesive sheet 11.
2 and temporarily fixed. The insertion hole 111 of the support plate 110 of the unit support leg 101 is exposed from the edge of the floor panel 123, and the support bolt 104 is turned by a driver or the like through the insertion hole 111, and the floor panel 123
(Or the upper surface of the support plate 110) is adjusted.

Similarly, adjacent floor panels are mounted on the already installed unit supporting legs 101 with a predetermined gap allowing the level of the floor panel 123 to be adjusted, and the other unit supporting legs 101 are similarly arranged and mounted. Such a work is repeated for each floor panel, the floor panel is constructed in a predetermined area, and the floor surface level is adjusted as necessary. The panel 123 is fixed to the unit support leg 101,
Also, an adhesive is injected from an adhesive reservoir 113 above the support bolt 104, and the level adjustment nut 108 and the support bolt 1
04 and fixed. After that, if necessary, a discarded plywood 124 is laid on the floor panel 123 or a relatively rigid adhesive tape is attached so as to cover a gap between adjacent floor panels, and then a CF sheet or a carpet ,
The work is completed by laying floor finishing materials (not shown) such as tatami mats, wooden floor materials, and tile carpets.

[0006]

A double floor is constructed by the construction as described above. In recent years, however, there has been a demand for improved indoor heat insulation and sound insulation. In order to provide sound insulation and the like, it has been proposed to provide a heat insulation and sound insulation material such as glass wool, styrofoam, styrofoam, and urethane foam in the floor structure. For example, the present applicant has already proposed a construction example in which a joist and a heat insulating material are arranged on a support plate of a unit support leg, and a floor panel is placed thereon (Japanese Patent Application Laid-Open No. 7-305442). However, in the case of this method, for example, a joist material narrower than the supporting plate is arranged on the unit supporting leg, and a heat insulating material is stretched between the joists, and then the floor panel is laid. The use of joists is required for construction of heavy floors, and there are difficulties in terms of workability and construction costs.In addition, heat insulation must be attached to the lower surface of the floor panel with staples, nails, fasteners, adhesive, double-sided tape, etc. In addition, the heat insulating material is gradually bent, and the desired effect cannot be obtained. Therefore, development of a floor panel integrated with a heat insulating material is required.

As such a panel material integrated with a heat insulating material, Japanese Utility Model Application Laid-Open No. 25707/1991 proposes a load-bearing panel structure in which a structural laminate is attached to at least one side of a core material made of a heat insulating material. . This load-bearing panel structure is mainly intended to be used for house wallboards, but is taught to be applicable to floorboards. However, when using a joist material, it is considered that no significant problem occurs. However, such a panel material using a heat insulating material such as urethane foam as a core material is supported by the unit supporting legs as described above. When used as a double-floor floor panel, for example, in a structure in which a structural laminate is laminated on one side of a core material by receiving loads for many years due to repeated walking or placing objects, the unit support legs The urethane foam in the portion to be supported largely shrinks, and even in a structure in which the structural laminate is laminated on both sides of the core material, the urethane foam shrinks as a whole, and a difference in shrinkage occurs depending on the floor area. Therefore, there is a problem that a step is generated between adjacent floor panels, the floor surface partially sinks, and a uniform floor surface level cannot be maintained for many months. In addition, heat insulation and sound insulation are exhibited by providing heat insulation and sound insulation material under the entire floor, and between the floor panels, such as a double floor having a structure in which the edge of the floor panel is supported by the unit support legs as described above. If there are gaps, the effect is significantly reduced.

Accordingly, it is an object of the present invention to provide excellent heat insulation and sound insulation, which can be easily laid by the unit supporting legs as described above, and that a constant floor level is stably maintained for many months. It is an object of the present invention to provide a floor panel integrated with a heat insulating and sound insulating material. Still another object of the present invention is to provide excellent heat insulation and sound insulation properties, such as generation of a step between adjacent floor panels and sinking of the floor surface even when subjected to a load for many years due to repeated walking or placing objects. It is an object of the present invention to provide a double floor construction method capable of easily and stably constructing a double floor capable of maintaining a uniform floor surface level for many months without any problem.

[0009]

According to one aspect of the present invention, there is provided a surface material and a heat insulating and sound insulating property integrally joined to one side of the surface material. A floor panel comprising a plastic foam having:
The floor panel is characterized in that the predetermined portion where the floor panel is supported is a surface material exposed portion where no plastic foam is present, or a plastic foam portion having a higher hardness than other portions. Provided. According to a preferred aspect of the floor panel, a groove or a recess is formed in at least one end face in the longitudinal direction, and a protrusion fitted to the groove or the recess is formed in the other end face facing the longitudinal direction. And a notch or a hole is formed at a predetermined position where the floor panel is supported.

Further, according to another aspect of the present invention, a unit support leg group comprising a leg member and a support plate mounted on the upper end of the leg member so as to be adjustable in height is combined with a floor panel group. In the construction method of a double floor laying the floor panel in a state where the floor panel is supported at a predetermined height level by the support plate of the unit support leg, using the floor panel as described above as the floor panel, After laying a floor panel by arranging a surface material exposed portion or a plastic foam portion having high hardness on the edge portion of the floor panel on which the plastic foam does not exist, and laying the floor panel, an adjacent floor panel There is provided a method of constructing a double floor, characterized by filling the gaps with plastic foam.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS As described above, a floor panel according to the present invention is formed by integrating a plate-shaped heat insulating material made of a surface material and a plastic foam, and is supported by a support plate of a unit support leg. However, it is a surface material exposed portion where no plastic foam is present, or a plastic foam portion having a higher hardness than portions other than the support portion. That is, the portion supported by the support plate of the unit support leg is the wooden surface material itself or the hard portion of the plastic foam. Therefore, when the wooden surface material itself is supported by the unit supporting legs, it is stably supported just like a conventional floor panel, and the plastic foam does not shrink due to a load applied to the floor panel. On the other hand, if the floor panel is supported by a hard part of plastic foam, that part is harder than other parts,
Because of high rigidity and the like, there is almost no shrinkage due to the application of a load, and the support is stable. Therefore, even if a load is applied for many years due to repeated walking, placing objects, etc., there is no problem such as steps between adjacent floor panels or sinking of the floor surface, and a uniform floor level can be maintained for many years. You can build a stable double floor that can be maintained over the month. In the case of a floor panel in which the portion supported by the support plate of the unit support leg is a surface material exposed portion where no plastic foam is present, it can be advantageously used for construction of a double floor with a low floor height.

Further, the floor panel of the present invention is a heat insulating / sound insulating material integrated type, and has excellent heat insulating / heat insulating properties and sound insulating properties, as well as excellent workability, easy handling, and the like. Therefore, by using the floor panel of the present invention, the advantages of the conventional double floor construction method using a combination of the unit support legs and the floor panel, that is, the advantages of workability, stability, low construction costs, and the like are maintained as they are. A double floor excellent in heat insulation and sound insulation can be constructed. Moreover, in the double floor construction method of the present invention, after laying the floor panels, the gap between the adjacent floor panels is filled with plastic foam to eliminate the gap between the floor surfaces, so that the heat insulation and sound insulation are provided. The properties are even better.

A groove or a recess is formed in at least one end face in the longitudinal direction, and a projection fitted into the groove or the recess is formed in the other end face opposite to the longitudinal direction, and a unit support is formed. By using a floor panel in which a notch or a hole is formed at a predetermined position supported by a leg, the floor panel is laid by fitting a protrusion of the other floor panel into a groove or a recess of one floor panel. Therefore, there is almost no lateral displacement of the floor panel when laying, and a step is hardly generated between adjacent floor panels. Also,
Since the gap remaining between the adjacent floor panels after the floor panel is laid is the above-described cutout or hole, the filling operation of the plastic foam can be performed easily and with good workability, and the heat resistance and the sound insulation are further improved. It will be excellent. Even if the cutouts or holes are not filled with plastic foam after the floor panel is laid, the cutouts or holes are extremely small compared to the entire floor surface, so relatively good heat insulation and sound insulation are provided. Property is obtained.

The surface material is not particularly limited as long as it is various types of architectural boards conventionally used, but plywood, particle board, MDF board, and the like can be used in view of strength, weight, cost, and the like. It is suitable. On the other hand, as the plastic foam, when integrated with a surface material, it can be used as long as it is a semi-rigid or rigid plastic foam that exhibits sufficient durability and heat insulation as a floor panel, and sound insulation. Preferably, a closed-cell type or semi-closed-cell type urethane foam, such as foamed urethane or foamed polystyrene, is particularly preferable since it is superior to polystyrene foam in terms of strength and sound insulation. Such a plastic foam has a considerably high compressive strength, and also has excellent heat insulation, sound insulation, insect repellency, weather resistance, etc., has no hygroscopicity, and its properties hardly change over a long period of time. . In addition, since it is lightweight and can be easily processed such as cutting and drilling, it is advantageous from the viewpoint of handling.

In the floor panel according to the present invention, the plastic foam is integrally laminated on one side surface of the surface material. The joining method of the plastic foam and the plate-like plastic foam is as follows. The method of joining with an adhesive or fixing the surface material to the mold, then injecting the raw material of the plastic foam into the mold, foaming and molding, the surface material and the plastic foam are integrally formed. Although a method of forming can be adopted, the latter method is preferable from the viewpoint of workability and the like. Specifically, a preferred method will be described. For example, the floor panel to be formed is unit-supported at a predetermined location so that a plastic foam does not exist at a predetermined location at the lower edge of the surface material supported by the unit support legs. Using a mold with a concave part matching the shape of the corner of the leg support plate, incorporating the surface material into the mold, and then urethane and other raw materials in the space surrounded by the mold and the surface material Inject, foam and fill. The foam injected and foamed into the space surrounded by the mold and the surface material as described above is filled to every corner in the mold and generates a strong adhesive force together with the foaming pressure during foam hardening. A floor panel in which the materials are firmly integrated is obtained.

The floor panel formed by integrating the plastic foam and the surface material is removed from the mold after the foam has solidified, so that the floor panel other than the supported portion at the lower edge supported by the unit supporting legs is removed. A floor panel according to the present invention in which a plastic foam having heat insulation and sound insulation properties is laminated on the floor panel is obtained, but a high-hardness foam is applied to a portion of the lower surface edge of the floor panel where no plastic foam exists. Further, by foaming and filling, it is possible to obtain a floor panel according to another embodiment of the present invention. As a method of manufacturing such a floor panel, for example, the above-mentioned floor panel in which a concave portion is formed at a predetermined portion of a side edge portion of a plastic foam is fixed to a formwork surrounding a side end surface of a surface material, and the plastic material already formed is What is necessary is just to foam and fill a high-hardness foam in the recess at the side edge of the plastic foam so as to be integrated with the foam. The hardness and rigidity of the high-hardness foam part can be adjusted by density, addition of a filler, and the like. The structure (type) of the polyisocyanate or polyol, the type and expansion ratio of the foaming agent, the type and amount of the filler Thus, a desired hardness can be obtained.

In the method of constructing a double floor using the floor panel according to the present invention as described above, basically, the floor panel is supported at a predetermined height level by the support plate of the conventional unit supporting leg. It is the same as the construction method of the double floor where the floor panel is laid in the state where the floor panel is laid, placement and temporary fixing of the floor panel on the unit support leg, floor level adjustment, nailing of the floor panel to the unit support leg, The floor panel is laid through steps such as fixing with screws and bonding and fixing the level adjustment nut and support bolt, and then the floor finishing material is installed, and detailed description thereof is omitted. . The difference from the conventional construction method is that the floor panel of the present invention has a surface material exposed portion or a high-hardness foam portion where no plastic foam is present at a predetermined edge portion as a supported portion, as described above. Therefore, the floor panel is placed so that the supported portion is located on the support plate of the unit support leg, and after laying the floor panel through each of the above-described steps, the plastic is inserted into the gap between the floor panels. This is for filling the foam.

The above-mentioned plastic foam for filling is also
Styrofoam and urethane foam can be suitably used, but urethane foam is particularly preferable. Urethane is injected into the gap between floor panels using a foam injection machine or the like, and the floor panel is formed by an injection foaming method in which the foam is instantaneously foamed and filled. Urethane foam which is in close contact with the side wall surface of the gap can be formed with good workability. In addition, when the floor panel according to the present invention is laid on the unit supporting legs by using the floor panel in which the projections (tons) and the grooves (recesses) are formed on the end surfaces, the floors adjacent to each other are used. Since the panels are laid almost closely, the filling of the plastic foam after laying the floor panel may be performed only at the through-holes formed by the cutouts or holes located above the support bolts of the unit support legs. Therefore, workability can be improved. Thereafter, the construction of the floor finishing material is performed in the same manner as before.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described more specifically with reference to the embodiments shown in the accompanying drawings. FIG. 1 shows an embodiment of a double floor constructed using the floor panel according to the present invention. In the figure, reference numeral 101 indicates a unit support leg,
Its basic configuration is substantially the same as the conventionally known one shown in FIG. 10, and a support bolt 1 rotatably erected on a vibration-proof floor base 102 made of an elastic material such as rubber.
And a support plate 110 in which a level adjusting nut 108 having an annular support portion 109 projecting from the outer periphery is fitted and attached to the central insertion hole.

FIG. 2 shows an embodiment of the floor panel of the present invention supported by the unit supporting legs 101, as viewed from the back side (polyurethane foam side). The floor panel 1 of the present embodiment is formed by integrally joining a wooden surface material 2 and a polyurethane foam 3 laminated on the back surface thereof, and is supported by unit supporting legs at an edge of the polyurethane foam 3. A concave portion 4 as shown in the figure is formed at a predetermined location, and the surface material 2 is exposed to the back side at this portion. Such a floor panel 1 is, as shown in FIG.
The support plate 1 of the unit support leg 101 arranged on the base floor 120 at a predetermined pitch P corresponding to the distance between the recesses 4
10, the tip of a rotating tool such as a screwdriver is supported by the unit supporting leg 10 so as to be supported at the position of the concave portion 4.
A groove 107 formed on the top end surface of one support bolt 104
(See FIG. 10). A predetermined gap W is inserted between the floor panels 1 so that the level can be adjusted by being inserted into the floor panel 1 from above, and is supported by the unit supporting legs 101 at a predetermined height level. You.

The arrangement of the floor panel 1 on the unit support leg 101 and the double-sided adhesive sheet 1 on the support plate 110
12, temporary fixing via the floor 12, floor level adjustment, nailing of the unit support leg 101 of the floor panel 1 to the support plate 110, fixing by screwing, etc., injection of adhesive from the adhesive reservoir 113 (see FIG. 10). After laying the floor panel 1 in a planar arrangement as shown in FIG. 3 through the same steps as in the related art, such as bonding and fixing the level adjusting nut 108 and the support bolt 104, the adjacent floor panels 1 By injecting and foaming the polyurethane foam 5 into the gap W therebetween and filling it, a double bed is constructed in a form as shown in FIG. Thereafter, the construction of the floor finishing material is performed in the same manner as before. Since polyurethane foams 3 and 5 are present in the lower surface of the double-layered floor panel 1 and the gap W between the floor panels 1 constructed in this manner, a double-layered floor having excellent heat insulation and sound insulation properties is obtained. Become. Further, when the floor panel 1 in which the recess 4 is formed as described above is used,
A double floor with a lower floor height can be constructed as compared with the case where a floor panel in which is not formed is used.

FIGS. 4 and 5 show another embodiment of the present invention. FIG. 4 shows the structure of a double floor constructed using the floor panel 1a shown in FIG. The floor panel 1a shown in FIG.
The point that the polyurethane foam 3a is integrally laminated on the back surface of the wooden surface material 2a is the same as the floor panel 1 shown in FIG. The difference is that the body part 6 is formed.
Therefore, in the double floor using the floor panel 1a of the present embodiment,
As shown in FIG. 4, the floor panel 1a is
The support plate 110 is supported at the position of the high-hardness portion 6 of the polyurethane foam, but the structure and construction method of the other double floors are the same as those in the above embodiment.

FIGS. 6 and 7 show still another modification of the floor panel. Floor panel 1 shown in FIGS. 6 and 7
b differs from the floor panel shown in FIG. 2 in that the polyurethane foam 3b is integrally laminated on the back surface of the surface material 2b and the recess 4b is formed at a predetermined portion of the edge of the polyurethane foam 3b. Similarly, in the floor panel 1b of the present embodiment, a groove 7 is formed in the longitudinal direction on one pair of orthogonal end faces of the polyurethane foam 3b, and the groove 7 is formed on the other pair of orthogonal end faces facing the same. A protrusion 8 having a size to be inserted into 7 is formed in the longitudinal direction. Further, the surface material 2b and the polyurethane foam 3 are formed at predetermined positions corresponding to the recesses 4b so as to form a gap large enough to insert a tip of a rotating tool such as a screwdriver.
Notches 9a and 9b are formed in b, respectively.

In the construction of the floor panel 1b with tongue, the recess 4b is formed by the support plate 11 of the unit support leg 101.
0, and the protrusions (tongues) 8 of one floor panel 1b are fitted into the grooves 7 of the adjacent floor panel 1b and arranged without gaps. At this time, a gap S is formed between the cutout portion 9a of the surface material 2b of one floor panel 1b and the cutout portion 9b of the polyurethane foam 3b of the other floor panel 1b. The groove 107 (see FIG. 10) on the top end surface of the support bolt of the unit support leg 101 can be approached and fitted through the gap, and the floor level can be adjusted by turning the support bolt 104. In addition, since the edge of the short side other than the corner of the floor panel 1b is not supported by the unit support legs,
It is not necessary to form the notch, but if the edge on the short side is also supported by the unit support legs using a wide floor panel, the notch may be formed as described above. Good.

FIGS. 8 and 9 show still another modification of the floor panel. Floor panel 1 shown in FIGS. 8 and 9
c shows that the polyurethane foam 3c is integrally laminated on the back surface of the surface material 2c and that the polyurethane foam 3b has a high hardness portion 6c formed at a predetermined edge portion of the polyurethane foam 3b. 5 is the same as the floor panel shown in FIG. 5, except that a concave portion 10 is formed in one of a pair of orthogonal end faces of the polyurethane foam 3c in the longitudinal direction, and a projection 11 is formed in the other pair of orthogonal end faces facing the same. It is formed in the direction. Further, in the floor panel 1c of the present embodiment, an upper and lower through hole having a size capable of inserting a tip of a rotating tool such as a screwdriver can be formed at a predetermined location of the high hardness portion 6c of the polyurethane foam. Holes 12a and 12b are formed in the protruding portion 11 of the surface material 2c and the polyurethane foam 3c so as to be aligned with each other.

In the construction of the floor panel 1c, the high-hardness portion 6c of the polyurethane foam is attached to the unit supporting legs 10c.
1 so that the projection 11 of one floor panel 1c is placed on the support plate 110 and the recess 1 of the adjacent floor panel 1c.
Arrange without gap according to 2. At this time, the hole 12a of the surface material 2c of one floor panel 1c and the other floor panel 1c
The upper and lower through-holes are formed in alignment with the holes 12b of the polyurethane foam 3c, and the groove 107 on the top end surface of the support bolt of the unit support leg 101 located thereunder (FIG. 10).
) Can be approached and fitted through the upper and lower through holes, whereby the support bolt 104 can be turned to adjust the floor level. In addition, since the edge of the short side other than the corner of the floor panel 1c is not supported by the unit supporting leg, it is not necessary to form the above-mentioned hole, but a wide floor panel is used to form the short side. When the edge is also supported by the unit supporting leg, a hole may be formed or a notch may be formed in the same manner as described above.

In the floor panel shown in FIGS. 6 to 9, the projections (tons) 8, 11 or the grooves (recesses) are provided at the edges of the four sides.
Although 7 and 10 are formed, it is also possible to form a protrusion (ridge) and a groove (recess) only on a pair of long-side edges or short-side edges facing each other. In the floor panel shown in FIGS. 6 and 7, the portion to be placed on the unit supporting leg is a concave portion 4b, and notches 9a, 9b are provided at predetermined positions on the long side edges of the surface material 2b and the polyurethane foam 3b. However, instead of the recess, a high-hardness portion of the polyurethane foam may be used, or a hole may be formed instead of the notch. Further, the shape of the cutout portion can be formed not only in a rectangular shape as shown in the figure, but also in an arbitrary shape such as a square or a semicircle.

[0028]

As described above, according to the floor panel of the present invention and the method of constructing a double floor using the same, even if a load is applied for many years due to repeated walking, placing objects, etc., adjacent floors can be used. It is possible to construct a stable double floor capable of maintaining a uniform floor level for many months without causing any problems such as steps between panels or sinking of the floor. Furthermore, the floor panel of the present invention is a heat insulation / sound insulation material integrated type, and is excellent in heat insulation / heat insulation and sound insulation as well as workability, ease of handling, and the like. Therefore, by using the floor panel of the present invention,
The advantages of the conventional double floor construction method using a combination of unit supporting legs and floor panels, that is, double floors with excellent heat insulation and sound insulation while maintaining the advantages of workability, stability, and low construction cost. Can be constructed. Moreover, in the double floor construction method of the present invention, after laying the floor panels, the gap between the adjacent floor panels is filled with plastic foam to eliminate the gap between the floor surfaces, so that the heat insulation and sound insulation are provided. The properties are even better.

A groove or a concave portion is formed in at least one end face in the longitudinal direction, and a protruding portion (shin) is formed in the opposite end face in the longitudinal direction, and is supported by the unit supporting leg. By using a floor panel in which a notch or a hole is formed at a predetermined location, the floor panel is laid while the protrusion of the other floor panel is fitted into the groove or recess of one floor panel, Almost no lateral displacement of the floor panels occurs during the laying, and a step is hardly generated between adjacent floor panels. In addition, since the gap remaining between the adjacent floor panels after the floor panel is laid is the above-mentioned cutout or hole, the filling operation of the plastic foam can be performed easily and with good workability, and furthermore, the heat resistance and the sound insulation properties are improved. Will be even better. Furthermore, even when notches or holes are not filled with plastic foam after floor panel laying, the notches or holes are extremely small compared to the entire floor surface, so relatively good heat insulation and sound insulation. Property is obtained. Further, a floor panel in which a concave portion is formed at a position supported by the support plate of the unit support leg and is a surface material exposed portion can be advantageously used when a double floor with a low floor height is constructed.

[Brief description of the drawings]

FIG. 1 is a partial vertical sectional side view showing an embodiment of a double floor constructed using the floor panel of the present invention.

FIG. 2 is a perspective view of the floor panel used in the embodiment shown in FIG. 1 as viewed from the back side.

FIG. 3 is a partial plan view showing an arrangement form of the floor panel of the embodiment shown in FIG.

FIG. 4 is a partial vertical sectional side view showing another embodiment of the double floor constructed using the floor panel of another embodiment of the present invention.

5 is a perspective view of the floor panel used in the embodiment shown in FIG. 4 as viewed from the back side.

FIG. 6 is a plan view showing another embodiment of the floor panel of the present invention.

FIG. 7 is a sectional view taken along line AA of FIG. 6;

FIG. 8 is a plan view showing still another embodiment of the floor panel of the present invention.

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

FIG. 10 is a partial cross-sectional side view showing an example of a conventional unit support leg.

FIG. 11 is a cutaway perspective view showing a state where a floor panel is constructed using a conventional unit supporting leg.

[Explanation of symbols]

1, 1a, 1b, 1c, 123 floor panel, 2, 2a,
2b, 2c surface material, 3, 3a, 3b, 3c, 5 polyurethane foam, 4, 4b recess, 6 high-hardness portion of polyurethane foam, 7 groove, 8 protrusion (sone), 9a,
9b Notch, 10 recess, 11 protrusion, 12a, 1
2b hole, 101 unit support leg, 102 floor support base, 104 support bolt, 108 level adjustment nut, 110 support plate, 120 base floor (concrete slab)

Claims (3)

[Claims] 1. A floor panel comprising a surface material and a heat-insulating and sound-insulating plastic foam integrally joined to one side surface of the surface material, wherein the floor panel is supported at a predetermined position. However, the floor panel is characterized in that it is a surface material exposed portion where no plastic foam is present, or is a plastic foam portion having a higher hardness than other portions. 2. A floor or a groove is formed in at least one end face of the floor panel in a longitudinal direction, and a projection fitted in the groove or the recess is formed in the other end face opposed to the groove in a longitudinal direction. The floor panel according to claim 1, wherein a notch or a hole is formed at a predetermined position where the floor panel is supported. 3. A unit support leg group comprising a leg member and a support plate mounted on the upper end of the leg member so as to be adjustable in height.
A method for constructing a double floor in which a floor panel is laid in a state in which the floor panel is supported at a predetermined height level by a support plate of the unit support leg, in combination with a floor panel group, wherein the floor panel is claimed as the floor panel. 3. A floor panel using the floor panel according to 1 or 2, wherein a surface material exposed portion or a high-hardness plastic foam portion at the edge of the floor panel where no plastic foam is present is arranged on the support plate of the unit support leg. A method of constructing a double floor, characterized by filling the gap between adjacent floor panels with a plastic foam after laying.