JPH0853891A - Floor panel - Google Patents

Abstract

PURPOSE:To make unnecessary the treatment of joints and to improve the precision of working, by a method wherein a flooring basic member on which ALC boards put side by side and a holding part therefor consisting of a board member are integrally fixed is fastened to joists arranged parallel to each other and sound-insulating boards are put on the underside of the flooring basic member. CONSTITUTION:In a factory, a flooring basic member 5A is formed by arranging ALC boards 2A, 2B on a holding part 4A consisting of a board member 3A, and joists 6A are fastened thereto, and thus a floor panel 1A in desired shape is formed. In addition, sound-insulating boards 14 are stuck on the underside of the flooring basic member 5A and between the joists 6A. This floor panel 1A is placed on beam members made of shape steel or the like and is fastened thereto. At a building site, the treatment of joints is made unnecessary and the installation of the floor panel 1A is made easy. In this way, strength, precision and constructing efficiency can be improved, the breakage of the ALC boards in transit and in construction is reduced and both a sound-insulating property and a heat-insulating proberty can be heightened.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor panel capable of forming a floor of a house with good workability in the field and with high accuracy by using an ALC plate having excellent sound insulation, fireproofing and heat insulating properties.

[0002]

2. Description of the Related Art In recent years, as shown in FIG. 25, the outer wall w of a house is increasingly formed by using an ALC plate (ALC panel). This ALC plate is a lightweight cellular concrete panel containing lime or cement raw material and siliceous raw material as a main raw material, to which a foaming agent is added, and by solidification during curing, a large number of closed cells are formed, It is characterized by high sound insulation, fire protection and heat insulation.

In order to make use of such characteristics of the ALC plate, it is becoming popular to form a floor of a house using the ALC plate. Conventionally, the construction process at the site is
As illustrated in FIG. 25, for example, beam members h forming a frame structure of a house are laid across parallel steel floor beams a at a pitch interval of a reference module (about 900 mm). A step of arranging the ... Side-by-side and fixing with screws or the like, a step of juxtaposing a relatively thin ALC plate p having a thickness of 30 mm to 50 mm on the floor base plate b. , P, or each ALC plate p
When a dent is formed on the upper surface of the ALC plate p, a caulking material c such as resin mortar is filled in the joint and the dent to flatten the upper surface of the ALC plate p. It comprises a joint treatment step, a screw post-treatment step, and a step of laying a surface material such as a flooring on the ALC plate p.

[0004]

However, in the conventional construction method in which the ALC plates p are placed and fixed on the floor base plates b one by one at the site, the accuracy of the floor body will be lowered if the quality control is not properly reported. In some cases, ALC plate p is 1
Since the screws are fixed one by one, the number of places where the screws are to be inserted increases, and in addition to the need for many joint treatments and screw post-treatments, the workability on site tends to be poor.

Further, since the floor base plates b ... serve as scaffolds during the construction of the ALC plates p ..., the strength of the working floor must be ensured by the floor base plates b, and the thickness of the base material is more than necessary. There was also an irrational situation in which the floor base plate b was required.

Further, since the ALC plate p has a smaller bending strength than ordinary concrete panels and is liable to be broken or cracked, the ALC plate p is transported from the factory to the site and at the time of construction. However, it was necessary to pay close attention, and its handling was inconvenient.

The present invention is basically provided with a floor base body in which an ALC plate arranged side by side and a holding portion made of a plate material are integrally fixed, and it is possible to eliminate the installation of the ALC plate alone in the field, and to improve workability in the field. An object of the present invention is to provide a floor panel that can be improved and at the same time can reinforce the ALC plate by the holding portion and reduce damage during transportation and construction.

[0008]

In order to achieve the above object, the floor panels of the present invention are arranged side by side.
A floor base, which is integrally fixed to an LC plate and a holding portion made of one or more plate members, which has a shape substantially equal to the outer peripheral shape of the entire ALC plate to be arranged, is fixed to a joist arranged in parallel. .

[0009]

The floor base body to which the ALC plates arranged side by side next to each other and the holding portion made of one or more plate members are integrally fixed is fixed to the joists arranged in parallel. Therefore, ALC
Compared with the conventional one in which plates are installed one by one, for example, the number of screw driving points can be reduced and the workability on site can be improved. Also, when the ALC plate is attached in close contact with the holding part, joint treatment becomes unnecessary, and even when joint treatment is performed, joint treatment and other post-screw treatment can be performed in advance at the time of production in a factory. , The labor on site can be significantly reduced, and the work can be saved.

Further, since the ALC plate is integrally fixed in advance at, for example, a factory, its quality and accuracy can be improved.
The floor construction accuracy can be improved as compared with the installation of the LC plate.

Further, since the strength is increased by the integration of the ALC plate and the holding portion, the holding portion is not required to have an unnecessary thickness unlike the conventional floor base plate b (shown in FIG. 25). It is possible to rationalize materials.

Further, since the ALC plate is reinforced by the holding portion made of a plate material and the joists, the damage of the ALC plate during transportation and construction can be reduced, and the handleability thereof is convenient.

As described above, the floor panel of the present invention has a sound insulation property,
It is possible to conveniently form a floor with high fire resistance and heat insulation with good on-site workability. In particular, the floor base plate b (shown in FIG. 25) because the holding portion made of a plate material and the ALC plate are integrally fixed.
It is possible to reduce the voids compared to the one using and to enhance the sound insulation effect.

Further, in the invention of claim 2, when the holding portion is in contact with and fixed to the joist, an ALC plate which is weak against bending can be strongly reinforced by the integrated joist and the holding portion,
Strength against load can be increased.

Further, in the invention of claim 3, when the ALC plate is fixed in contact with the joist, the holding portion fixed to the upper surface of the ALC plate more effectively protects the ALC plate from damage such as cracking and chipping. It can be prevented.

In the invention of claim 4, the sound insulation board can absorb the heavy impact sound on the upper floor, enhance the habitability of the lower floor, and improve the quality of the house. As a sound insulation board,
Various heavy board bodies such as gypsum board and cement board can be preferably used.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 to 15, a floor panel 1 of the present invention has ALC plates 2 arranged side by side and arranged, and the ALC plates 2 arranged so as to have substantially the same outer peripheral shape and one or more plate materials 3. The floor base body 5 integrally fixed to the holding portion 4 is fixed to the joists 6 ...

In this embodiment, the floor panel 1 is a narrow floor panel 1A having, for example, four joists 6A shown in FIG.
And a wide floor panel 1B having, for example, seven joists 6A ... Shown in FIG. The joist 6A has a height H of 45.
mm, width W is about 38 mm, and length L is four times as large as 900 mm which is the reference module, that is, about 3600 mm, in this example 3670 mm, which is made of wood material having a rectangular cross section.
The height H is 45 mm to 200 mm, and the width W is 30 mm.
The length can be changed within a range of about 50 mm and the length L is about 1200 mm to 3670 mm, and the number thereof can be appropriately increased or decreased.

In the floor panel 1A, as shown in FIGS. 3 and 4, the floor base 5A is fixed to the four joists 6A which are arranged in parallel at substantially equal intervals.

The floor substrate 5A has a thickness of 5.5 mm to 15 mm.
The holding portion 4A is composed of one rectangular plywood of about mm, and a plate material 3A such as particle board. This holding unit 4
The length of the long side of A is set to 3670 mm and the length of the short side is set to 900 mm, and the holding portion 4A is in contact with the joists 6A ... And each side of the joists 6A, 6A on both sides has a length. The sides are aligned and fixed to the joists 6A using a fixing device 15 such as a screw nail.

Further, the floor base 5A is composed of four ALC plates 2 which are arranged side by side in two rows on the holding portion 4A.
A, 2A, 2B, 2B. The ALC plate 2A has a rectangular plate shape with a thickness of about 30 mm to 50 mm, and its long side is set to 1800 mm and its short side is set to 600 mm. The ALC plate 2B has a rectangular plate shape with the same thickness as the ALC plate 2A, and has a long side of 1800 mm.
The length of the short side is set to 300 mm.

Therefore, the two ALC plates 2A and 2A are arranged side by side with their long sides aligned, and the two ALC plates 2 are arranged.
B and 2B, each long side of which is adhered to each of the long sides of the ALC plates 2A and 2A, and the ALC plates 2A, 2A, 2B and 2
By aligning the short sides of B on a straight line and juxtaposing them, the outer peripheral shape of the entire four ALC plates 2A, 2A, 2B, 2B is
3600 mm x 900, which is approximately the same as the outer peripheral shape of the plate 3A
mm rectangular shape, and each ALC plate 2A, 2A, 2
B and 2B are placed on the holding portion 4A and integrally fixed to the holding portion 4A using a fixing tool 16 such as a screw to form the floor base 5A. Also, the joists 6A ...
It is arranged parallel to the long sides of the ALC plates 2A and 2B.

A heavy sound insulation board 14 such as a plaster board having a thickness of about 21 mm is provided on the surface of the floor base 5A on which the joists 6A are fixed, that is, between the joists 6A and 6A on the lower surface of the holding portion 4A. It is fixed by using staples or the like.

Further, since the side surfaces 13 facing the short edges of the holding portions 4A of the ALC plates 2A and 2B are located inwardly about 35 mm from the edges, the short sides of the floor base 5A are located. Has stepped portions 12, 12.

When joints are formed between the adjacent ALC plates 2A ... 2B ..., the joints may be filled with a cornking material such as resin mortar or the joints may be treated. When dents occur due to this, screw post treatment may be performed by filling caulking material.

As shown in FIGS. 5 and 6, the floor panel 1A is composed of only the floor base 5A and four joists 6A which are fixed in contact with the lower surface of the holding portion 4A thereof. 14 may be omitted.

Further, the floor panel 1A is, as shown in FIGS. 9 and 10, an AL arranged on the holding portion 4A and its upper surface.
The C-plates 2A, 2A, 2B, and 2B are integrally fixed using a fastener 19 that is inserted from below the holding portion 4A, and the floor base 5 is fixed.
After forming A, the floor base 5A may be fixed to the joist 6A by using a fixing tool 20 such as a screw.

Even in this case, the sound insulation board 14 shown in FIG.
The floor panel 1A including ... Is suitably adopted from the viewpoint of reducing heavy impact sound, but as shown in FIG. 10, a sound insulation board can be omitted.

In order to integrally fix the ALC plates 2A and 2B and the holding portion 4A and to fix the holding portion 4A and the joist 6A,
It is also possible to use a rubber-based or epoxy-based adhesive capable of exhibiting anti-vibration properties. In this case, the ALC plates 2A and 2B and the holding portion 4 are used.
A, or the adhesiveness between the holding portion 4A and the joist 6A increases,
The sound insulation can be further improved, and the adhesive and the screw can be used together.

Further, as shown in FIG. 11, the ALC plates 2A and 2B of the floor base 5A are fixed in contact with the joists 6A, and the holding portion 4 made of the plate material 3A is integrally fixed to the upper surface of the ALC plate 2. As a result, the ALC plates 2A and 2B are cracked,
The chipping can be effectively prevented.

In the floor panel 1A, joists 6A
As shown in FIGS. 12 and 13, the auxiliary frame members 21, 21 made of wood and having substantially the same cross section as the joist 6A are laid across both ends of
The reinforcing strength of the floor base 5A can also be increased. Also in this embodiment, the floor panel 1A shown in FIG. 12 in which the sound insulation board 14 is fixed to the lower surface of the holding portion 4A of the floor base 5A can be preferably used, but as shown in FIG.
Can be omitted.

In the floor panel 1B, six ALC plates 2C ... Having the same size as the ALC plate 2A are used to make the outer peripheral shape of the entire ALC plate 2C ... 3600 mm × 1800 mm rectangular,
Along with this, the shape of the holding portions 4B is made substantially the same as the outer peripheral shape of the entire ALC plates 2C ... And the floor panel 1A has the same configuration except that the number of joists 6A ... Is increased to seven.

The floor panel 1B is a holding portion 4B for the floor base 5.
A heavy sound insulating board 14 such as a gypsum board or a cement board is fixed to the lower surface (shown in FIG. 7). FIG. 8 exemplifies a floor panel 1B without a sound insulation board.

The floor panel 1B also has a holding portion 4B.
In which the ALC plate 2C is in contact with the joist 6A (shown in FIGS. 7 and 8), the ALC plate 2C is in contact with the joist 6A, and the holding portions are provided on the upper and lower surfaces of the ALC plate 2C, respectively. Can also be adopted. Also, as shown in FIGS.
The auxiliary frame members 21, 21 may be laid across both ends of the joist 6A. 14 shows the floor panel 1B provided with the sound insulation boards 14 ... And FIG. 15 shows the floor panel 1B not provided with the sound insulation boards.

Further, the floor panels 1A and 1B are shown in FIGS.
As shown by the alternate long and short dash line in FIG.
Joists 6A ... Panel strength is obtained by bridging, for example, six reinforcing materials 36 having a rectangular cross section, which are fastened at right angles to the joists 6A by using fasteners such as screw nails on the lower surface, at approximately equal intervals. Is preferably reinforced.

Since such floor panels 1A and 1B are manufactured by closely arranging the ALC plates 2A, 2B and 2C in a factory, joint treatment is unnecessary and caulking material is filled if necessary. It is possible to significantly reduce the number of parts to be attached and to improve the workability on site as compared with the case where the ALC plates 2A, 2B and 2C are attached one by one. Also floor panels 1A, 1B
Are transported to the site and fixed to the frame structure A of the house.

The frame structure A, as shown in the upper floor of FIG. 1, is a beam member 24 made of, for example, a lattice beam, which is bridged between the through columns 23 of the house, and a reference module 9.
3 having an upper surface that extends in parallel with the beam member 24 and is flush with the upper surface of the beam member 24 between the beam members 24, 24 that are arranged in parallel with each other at a distance substantially equal to four times 00 mm. The book includes floor beams 25A, 25B, and 25C.

Further, the floor beams 25A, 25B, 25C and the beam members 24, 24 are spaced at substantially equal intervals to the reference module, while the floor beams 25A, 25C close to the beam members 24, 24.
Is a flange 26 with lips above and below the vertical web
The floor beam 25B at the center is made of a steel material having a substantially I-shaped cross section formed by welding two webs of the grooved steel with a lip.

The floor panels 1A and 1B are bridged between the beam members 24 and 24 by placing both ends of each joist 6A on the upper chord members 24A and 24A of the beam members 24 and 24 which are parallel to each other. As shown in FIG. 2, floor panels 1A, 1B
Of the upper chord members 24A, 24A and the flanges 26A on the floor beams 25A, 25B, 25C, respectively, and are attached to the frame structure A using fasteners 27 such as tapping screws.

The stepped portion 12 provided on the floor panels 1A and 1B has a lower end supported by a base metal fitting (not shown) rising on the upper surface of the upper chord member 24A and the ALC plates 2A, 2B and 2C. Help avoid mutual interference with.

Further, the upper surface treatment after the floor panels 1A and 1B are attached is only the post-treatment of the screws at the place where the fastener 27 is driven, and as shown in FIG. 25, the ALC plate p ...
It is possible to reduce the number of screws and to reduce the trouble of filling caulking material, etc., as compared with the case where one is installed at the site one by one, and the workability at the site can be improved and the quality and accuracy of the floor can be improved.

Of course, the floor panels 1A and 1B can be used for forming the first floor.

16 to 24 show another embodiment of the present invention. In this example, the floor panel 1 includes a floor panel 1C (shown in FIG. 18) including a floor substrate 5C having the same configuration as the floor substrate 5A of the floor panel 1A (see FIG. 18), and the floor panel 1B has the same dimensions and floor. The panel 1C includes a floor panel 1D (shown in FIG. 19) having the same configuration except the plane size.

The floor panel 1C includes the floor base 5C,
The floor bases 5C are fixed to two joists 6C, 6C which are parallel to the long sides and whose side faces are aligned with the long sides. The joist 6C
Is made of a wood material having a substantially rectangular cross section with a height of 180 mm (hence higher than the joists 6A and having a large bending rigidity), and is attached to the holding portion 4A of the floor base 5C with its edges aligned, and in the present embodiment. In this example, both ends of the joists 6C, 6C are fitted to the notches 29, 29 which are continuous notches on the upper side surfaces facing each other, extend at right angles to the joists 6C, and are adhered to the lower surface of the holding portion 4A using an adhesive. A plurality of mutually parallel frame members 30 ... Are bridged between the joists 6C, 6C.

It should be noted that one of the frame members 30 is disposed below the edge of the floor base 5C which is perpendicular to the joists 6C of the ALC plates 2A and 2B in order to enhance the reinforcing effect of the ALC plate 2. Is desirable.

On the lower surface of the holding portion 4A to which the joist 6C of the floor base 5C is fixed, the sound insulation board 14 is provided between the joists 6C and 6C.
... is installed. Note that, as shown in FIG. 22, a floor panel 1C not provided with a sound insulation board is also adopted if necessary.

As shown in FIG. 19, the floor panel 1D has the same structure as the floor panel 1C except that the plane dimension is 3670 mm × 1800 mm. In this case, since the distance between the joists 6C, 6C becomes large, as shown in FIG. 20, a central joist 6E extending in parallel with the joists 6C, 6C is provided to reinforce the ALC plate 2C. Preferably.

Floor panels 1D and 1 shown in FIGS. 19 and 20.
In D, the sound insulation boards 14 ... Are attached to the lower surface of the floor base 5. The sound insulation board 14 can be omitted if necessary, as shown in FIGS. 23 and 24. Such floor panel 1C,
1D is fixed to the frame structure B of the house on site. The frame structure B
Is a floor beam 25A of the frame structure A, as shown in FIG.
Instead of 25B and 25C, one floor beam 3 extending between the beam members 24 and 24 at equal distances from the beam members 24 and 24.
2 is used. The reason for reducing the number of floor beams 32 to one is that the joists 6C of the floor panels 1C and 1D are the joists 6A of the floor panels 1A and 1B.
It has a larger height than the
This is because one floor beam 32 that separates approximately twice the reference module from the beam member 24 is sufficient as a floor beam that supports the floor panels 1C and 1D that receive a load.

As shown in FIG. 17, the floor beam 32 includes horizontal flanges 34A, 34 above and below a vertical web.
It is made of I-shaped steel provided with B, and its upper surface is located below the upper surface of the upper chord member 24A of the beam member 24. Further, side facing pulls 37, 37 having horizontal receiving pieces 36, 36 projecting in a direction in which the upper flange 34A is aligned with the height and are opposed to each other are bolted to the facing surfaces of the beam members 24, 24, respectively.

In the floor panels 1C and 1D, the long sides of the floor panels are oriented at right angles to the beam 24, and the joists 6C are placed on the upper surface of the upper flange 34A and the receiving pieces 36 and 36, and the upper portions of the floor panels 1C and 1D. Flange 34A, receiving pieces 36, 36 slit 39A
By fixing the vertical flat plate-like fittings 39 ... Fitted on the floor to the joists 6C with nails or the like, the floor panels 1C, 1D
Is attached to the frame structure B with the lower surface of the frame member 30 substantially aligned with the upper surface of the beam member 24.

On the upper surface of the beam member 24 passing through the inside of the house,
A panel joint material 40 made of a long wood material having a rectangular cross section is attached to join the floor panels 1C and 1C and the floor panels 1D and 1D on both sides of the beam 24.

The floor panel 1C facing the panel joint material 40,
At the end of 1D, the step 12 may be omitted by extending the ALC plates 2A, 2B, and 2C.

Thus, the floor panels 1C and 1D of this embodiment
Since the floor panels 1C, 1D are attached to the frame structure B without using tapping screws or the like passing through the ALC plates 2A, 2B, 2C, the work of filling caulking material can be further reduced, and the workability on site can be improved. Can be further improved.

FIG. 21 shows how the floor panels 1C and 1D without the sound insulation board are attached to the frame structure B.

The floor panels 1A, 1B, 1C, 1D
In order to further enhance the sound insulation and soundproofing effects, it is preferable that the upper surface of the sheet be floored through a cushioned thin-walled sheet-like medium, a felt base, and the like.

[0056]

As described above, according to the floor panel of the present invention, the floor base body in which the ALC plates arranged side by side next to each other and the holding portion made of one or more plate members are integrally fixed is arranged in parallel. Is stuck to. Therefore, as compared with the conventional one in which ALC plates are installed one by one, for example, the number of screw driving locations can be reduced and the workability on site can be improved. Also, close to the holding part A
When the LC plate is attached, joint treatment is not required, and even when joint treatment is performed, joint treatment and other post-screw treatment can be performed in advance at the time of production in a factory, etc., which significantly reduces on-site labor. It can be done and labor saving can be achieved.

Further, since the ALC plate is integrally fixed in advance in a factory, for example, its quality and accuracy can be improved.
The floor construction accuracy can be improved as compared with the installation of the LC plate.

Further, since the strength is increased by the integration of the ALC plate and the holding portion, the holding portion is not required to have an excessive thickness unlike the conventional floor base plate b (shown in FIG. 25). It is possible to rationalize materials.

Further, since the ALC plate is reinforced by the holding portion made of a plate material and the joists, the damage of the ALC plate during transportation and construction can be reduced, and the handleability is convenient.

As described above, the floor panel of the present invention has a sound insulation property,
It is possible to conveniently form a floor with high fire resistance and heat insulation with good on-site workability. In particular, the floor base plate b (shown in FIG. 25) because the holding portion made of a plate material and the ALC plate are integrally fixed.
It is possible to reduce the voids compared to the one using and to enhance the sound insulation effect.

Further, in the invention of claim 2, when the holding portion is fixed by contacting the joist, the ALC plate, which is weak against bending, can be strongly reinforced by the integrated joist and the holding portion.
Strength against load can be increased.

Furthermore, in the invention of claim 3, when the ALC plate is fixed by contacting the joist, the holding portion fixed to the upper surface of the ALC plate more effectively protects the ALC plate from damage such as cracking and chipping. It can be prevented.

In the invention of claim 4, the sound insulation board can absorb the heavy impact sound on the upper floor, enhance the habitability of the lower floor, and improve the quality of the house. As a sound insulation board,
Various heavy board bodies such as gypsum board and cement board can be preferably used.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a floor panel of the present invention in a state of being attached to a house frame structure.

FIG. 2 is a sectional view thereof.

FIG. 3 is a perspective view showing an embodiment of the present invention.

FIG. 4 is a sectional view thereof.

FIG. 5 is a perspective view showing another embodiment of the present invention.

FIG. 6 is a sectional view showing another embodiment of the present invention.

FIG. 7 is a perspective view showing another embodiment of the present invention.

FIG. 8 is a perspective view showing another embodiment of the present invention.

FIG. 9 is a cross-sectional view showing another embodiment of the present invention.

FIG. 10 is a sectional view showing another embodiment of the present invention.

FIG. 11 is a sectional view showing another embodiment of the present invention.

FIG. 12 is a perspective view showing another embodiment of the present invention.

FIG. 13 is a perspective view showing another embodiment of the present invention.

FIG. 14 is a perspective view showing another embodiment of the present invention.

FIG. 15 is a perspective view showing another embodiment of the present invention.

FIG. 16 is a perspective view showing another embodiment of the floor panel of the present invention in a state where it is attached to a house frame structure.

FIG. 17 is a sectional view thereof.

FIG. 18 is a perspective view showing another embodiment of the present invention.

FIG. 19 is a perspective view showing another embodiment of the present invention.

FIG. 20 is a perspective view showing another embodiment of the present invention.

FIG. 21 is a cross-sectional view showing another embodiment of the floor panel of the present invention in a state where it is attached to a house frame structure.

FIG. 22 is a perspective view showing another embodiment of the floor panel of the present invention.

FIG. 23 is a perspective view showing another embodiment of the floor panel of the present invention.

FIG. 24 is a perspective view showing another embodiment of the floor panel of the present invention.

FIG. 25 is a perspective view for explaining a conventional technique.

[Explanation of symbols]

 1, 1A, 1B, 1C, 1D Floor panel 2, 2A, 2B, 2C ALC plate 3, 3A Plate material 4, 4A, 4B Holding part 5, 5A, 5C Floor substrate 6, 6A, 6C, 6E joist

Claims (4)

[Claims] 1. An ALC plate arranged side by side next to each other,
A floor panel formed by fixing a floor base having a shape substantially equal to the outer peripheral shape of the entire ALC plate to be arranged and integrally fixed to a holding portion made of one or more plate materials to a joist arranged in parallel. 2. The floor panel according to claim 1, wherein a holding portion of the floor base is fixed in contact with the joist. 3. The floor panel according to claim 1, wherein an ALC plate is in contact with and fixed to the joist in the floor base. 4. The floor panel according to claim 1, wherein the floor base is provided with a sound insulation board on a surface to which joists are fixed.