JP6317867B2 - Floor structure - Google Patents

Description

  The present invention relates to a floor structure that can reduce floor impact sound.

  Conventionally, a floor structure in which rubber is partially disposed under a floor panel such as particle board or plywood, and a sound absorbing material such as glass wool or rock wool is disposed in an air layer where no rubber is disposed is known. (See, for example, Patent Document 1).

JP-A-7-34642

  However, although the floor impact sound can be reduced in the conventional floor structure, since the floor rigidity is low, when a large load is repeatedly applied to the floor, there is a problem that the sinking of the floor becomes large. .

  The present invention has been made in view of conventional problems, and an object of the present invention is to provide a floor structure capable of suppressing the sinking of the floor while ensuring sufficient floor impact noise reduction performance.

The present invention is a floor structure comprising a floor slab, a sound absorbing layer provided on the slab surface of the floor slab, a foundation layer provided on the sound absorbing layer, and a finishing layer provided on the foundation layer. The foundation layer includes a vibration suppression foundation layer provided on the sound absorbing layer side and a sound insulation foundation layer provided on the finishing layer side, and the sound insulation foundation layer and the vibration suppression foundation layer. And the sound absorbing layer are each composed of a plurality of plate materials, and the extending direction of one side of the plate material (hereinafter referred to as the sound insulating plate) constituting the sound insulating base layer is the width direction, and the extending direction of the other side is the length direction. When the plate material constituting the sound absorbing layer (hereinafter referred to as a sound absorbing plate) is relative to the plate material constituting the damping base layer (hereinafter referred to as a vibration damping plate), the width direction and the length direction. as well as arranged in a position shifted by a predetermined amount in each of the case where the damping plate is joint tension is When the damping plate is fixed to the sound insulating plate at the corner of the diaphragm and the damping plate is stepped, the two corners of the damping plate adjacent in the length direction and the two to fix the damping plate to the sound insulation plate in the vicinity of the two corners of the damper plate adjacent in the width direction of the corner portion, characterized in Rukoto.
As a result, the load from the damping plate that has been acting on one sound absorbing plate in the past can be distributed to the plurality of sound absorbing plates, so that the sinking of the floor can be suppressed and the sound is transmitted to the damping plate. Since the generated floor impact sound is also distributed to the plurality of sound absorbing plates, the floor impact sound can be greatly reduced. In addition, even if the damping plate is jointed or stepping jointed, the damping plate and the sound insulation plate can be integrated, so that the floor rigidity can be increased without increasing the thickness of the foundation layer, It is possible to suppress the sinking of the floor while ensuring sufficient floor impact noise reduction performance.
In addition, since a gap is provided between the adjacent plate members of the vibration suppression base layer, it is possible to prevent inconveniences such as squeaking and pushing up.
In addition, as a method of providing the gap, the length dimension of both sides of one or both of the plate members adjacent to the plate member constituting the vibration suppression base layer is set to the length of both sides of the plate member constituting the sound absorbing layer. What is necessary is just to make it shorter than a size.
In addition, since the sound absorbing plate is fixed to the damping plate with an adhesive, the load from the damping plate can be reliably distributed to the plurality of sound absorbing plates, and floor impact sound can be further reduced.

Further, since the sound-insulating plate is jointed and the vibration-damping plate is fixed to the sound-insulating plate at the four corners of the sound-insulating plate, the vibration-damping plate and the sound-insulating plate can be reliably integrated.
In addition, when the sound insulation board is straddled, two corners of the sound insulation board adjacent in the length direction and the vicinity of the two corners of the sound insulation board adjacent in the width direction of the two corner parts Thus, if the damping plate is fixed to the sound insulation plate, the vibration damping plate and the sound insulation plate can be reliably integrated.

  Further, a rubber sound absorbing layer comprising a rubber block body placed on a slab surface and a plate member provided on the rubber block body, the sound absorbing layer located in the peripheral part of the chamber among the sound absorbing layers. Since the sound absorption layer located on the center side other than the room periphery is a fiber sound absorption layer formed of inorganic fibers, it offers excellent cushioning and a floor structure that can reliably suppress the sinking of the floor it can.

It is sectional drawing which shows the floor structure concerning this Embodiment. It is a figure which shows the relationship between an inorganic fiber board and a damping board. It is a figure which shows an example of the fixing method to the gypsum board containing a glass fiber nonwoven fabric of a damping board. It is a figure which shows an example of the fixing method to the gypsum board containing a glass fiber nonwoven fabric of a damping board. It is a figure which shows the other example of the floor structure by this invention. It is a figure which shows the example of arrangement | positioning of a damping board. It is a figure which shows the example of the floor structure provided with the rubber sound absorption layer. It is a figure which shows the detail of a rubber sound absorption layer.

Hereinafter, embodiments of the present invention will be described with reference to FIGS.
As shown in FIG. 1, the floor structure 1 according to the present embodiment includes a floor slab 2, a sound absorbing layer 3 provided on the slab surface 2S of the floor slab 2, and a vibration damping provided on the sound absorbing layer 3. A foundation layer 4 for sound insulation, a foundation layer 5 for sound insulation provided on the foundation layer 4 for vibration suppression, and a floor finishing layer 6 provided on the foundation layer 5 for sound insulation.
The sound absorbing layer 3 is formed of, for example, a plurality of inorganic fiber boards 3P obtained by forming inorganic fibers such as glass wool, rock wool, or PET fibers into a plate shape, and absorbs vibration propagated from the floor finish layer 6. , To absorb the unevenness of the slab surface 2S. The inorganic fiber board 3P constitutes the sound absorbing board of the present invention.
The vibration suppression base layer 4 includes, for example, a square-shaped base plywood 4P made of a wood board material such as particle board, and a vibration suppression sheet 4Q such as an asphalt mat attached to the sound insulation base layer 5 side. Prepare. In this example, the damping sheet 4Q uses a square mat having the same size as the base plywood 4P, and the vibration damping sheet 4Q and the base plywood 4P constituting the damping base layer 4 are integrated to form a damping board. 7P is produced.
The sound insulation base layer 5 is composed of a glass fiber non-woven gypsum plate 5P as a sound insulation plate disposed on the vibration damping plate 7P. The glass fiber nonwoven fabric-containing gypsum board 5P is inexpensive and has floor impact sound reduction performance and load resistance performance comparable to that of wooden plywood such as softwood plywood, and thus is suitably used as a plate material having sound insulation performance.
The floor finish layer 6 is configured by, for example, arranging a floor finish plate 6P made of a floor finish material such as flooring on a gypsum plate 5P containing a glass fiber nonwoven fabric.
In this example, as shown in FIG. 2, the vibration damping plate 7P is stretched through the straight joints of the vertical joint and the horizontal joint, and the inorganic fiber board 3P is placed on the floor slab 2 below the vibration damping plate 7P. Are shifted from the damping plate 7P by a predetermined amount in the width direction, which is the left-right direction in the figure, and in the length direction, which is the up-down direction. The inorganic fiber board 3P is configured to be fixed to the damping board 7P with an adhesive.
Thereby, while being able to disperse | distribute the load of the damping board 7P to the some inorganic fiber board 3P, the floor impact sound propagated to the damping board 7P can also be disperse | distributed, Therefore Sinking of a floor is suppressed. And floor impact sound can be greatly reduced.

The total thickness of the laminate in which the sound absorbing layer 3, the vibration damping foundation layer 4, the sound insulation foundation layer 5, and the floor finish layer 6 are laminated is, for example, about 50 mm to 100 mm, preferably about 60 mm or less. It is preferable to do.
Specifically, the thickness dimension of the inorganic fiber board 3P is about 25 mm, the thickness dimension of the base plywood 4P is about 9.0 mm, the thickness dimension of the vibration damping sheet 4Q is about 4 mm, and the gypsum board 5P with glass fiber nonwoven fabric is used. The thickness dimension may be about 9.5 mm, and the thickness dimension of the floor finish plate 6P may be about 12 mm. At this time, the thickness dimension of the damping plate 7P in which the damping sheet 4Q and the base plywood 4P are integrated is about 13 mm.
Moreover, in this example, while making the damping board 7P and the inorganic fiber board 3P into a square board whose length dimension of one side is 905 mm, for example, the inorganic fiber board 3P is width direction with respect to the damping board 7P. In addition, the vibration damping plate 7P and the inorganic fiber plate 3P are integrated with each other by being shifted by about 50 mm in the length direction. When the integrated damping plate 7P and the inorganic fiber plate 3P are arranged on the slab surface 2S, the lower surface of the shifted portion of the damping plate 7P or the inorganic fiber plate immediately below the shifted portion. If an adhesive is applied to either or both of the upper surfaces of 3P to bond the displaced part of the damping plate 7P and the inorganic fiber board 3P directly below the displaced part, the inorganic fiber board 3P and the damping plate 7P can be completely integrated.
Further, the gypsum plate 5P with the glass fiber nonwoven fabric is a rectangular plate having a long side length of 1820 mm and a short side length of 910 mm, for example, and the floor finish plate 6P is, for example, a long side having a long size. A long plate with a length of 1818 mm and a short side of 145 mm, and the vibration damping plate 7P and the gypsum plate 5P with glass fiber nonwoven fabric are arranged so that their joints do not overlap, and the gypsum with glass fiber nonwoven fabric is placed. The joints of the plate 5P and the floor finishing plate 6P are also arranged so as not to overlap.
Moreover, in this example, while arrange | positioning the damping board 7P and the gypsum board 5P containing glass fiber nonwoven fabric so that each joint may not overlap, about the joint of the gypsum board 5P containing glass fiber nonwoven fabric and the floor finishing board 6P Are arranged so as not to overlap.

Further, in this example, as shown in FIG. 3, the gypsum board 5P with glass fiber non-woven fabric is straddled in the width direction, and the inorganic fiber board 3P and the vibration damping are used by using a joining member 8 such as a nail or a screw. By bonding the plate 7P and the gypsum plate 5P with glass fiber nonwoven fabric, the inorganic fiber plate 3P, the damping plate 7P, and the gypsum plate 5P with glass fiber nonwoven fabric are fixed to the gypsum plate 5P with glass fiber nonwoven fabric. .
As fixed places, the corners C13 and C24 of the damping plates 7P1 and 7P2 adjacent in the length direction and the damping plate 7P3 located on one side (here, the left side) of the corners C13 and C24 in the width direction. , 7P4 corner positions C31, C42 and the corner portions D13, D24 of gypsum plates 5P1, 5P2 with glass fiber nonwoven fabric adjacent to the length direction, and one side in the width direction of these corner portions D13, D24 (here Then, it is preferable to set the positions D35 and D35 in the vicinity of the corner of the gypsum plate 5P3 containing glass fiber nonwoven fabric located on the left side). Cik and Djk are corners of the damping plate 7Pi and the plasterboard 5Pj with glass fiber nonwoven fabric, k = 1 is an upper right corner, k = 2 is a lower right corner, and k = 3 is a lower left corner. Part, k = 4 refers to the left corner.
In this way, the damping plate 7P is made of gypsum containing glass fiber nonwoven fabric at the corner C of the damping plate 7P and the corner portion of the gypsum plate 5P containing glass fiber nonwoven fabric and the position D adjacent to the width direction of the corner portion. If fixed to the plate 5P, the four damping plates 7P1 to 7P4 are connected through one gypsum plate 5P1 containing glass fiber nonwoven fabric, and the gypsum plates 5P1 to 5P3 containing glass fiber nonwoven fabric and glass fiber nonwoven fabric are contained. Since the damping plate 7P1 located at the lower part of the gypsum plates 5P1 to 5P3 is connected, the floor rigidity can be increased without increasing the thickness of the base plywood 4P. Therefore, it is possible to suppress the sinking of the floor while ensuring sufficient floor impact sound reduction performance.

  As mentioned above, although this invention was demonstrated using embodiment, the technical scope of this invention is not limited to the range as described in the said embodiment. It will be apparent to those skilled in the art that various modifications or improvements can be added to the embodiment. It is apparent from the claims that the embodiments added with such changes or improvements can be included in the technical scope of the present invention.

For example, in the said embodiment, although the damping board 7P and the inorganic fiber board 3P were made into the square board and the gypsum board 5P containing glass fiber nonwoven fabric was made into the rectangular board, the damping board 7P, the inorganic fiber board 3P, and glass The gypsum board 5P with fiber nonwoven fabric may be a square board or a rectangular board.
In the above embodiment, the damping plate 7P is jointed and the glass fiber non-woven gypsum plate 5P is stepped. However, as shown in FIG. 4, the damping plate 7P and the glass fiber non-woven gypsum are used. Both the plates 5P may be jointed. In this case, the corners C13, C24, C31, C42 of the damping plates 7P1, 7P2, 7P3, 7P4 and the corners D13, D24, D31, D42 of the gypsum plates 5P1, 5P2, 5P3, 5P4 containing the glass fiber nonwoven fabric. Is a fixed part.
Alternatively, the damping plate 7P and the glass fiber non-woven gypsum plate 5P may be used as a stepping joint, or the damping plate 7P may be used as a stepping joint and the glass fiber non-woven gypsum plate 5P may be used as a through joint. .
In any case, as shown in FIG. 2, the inorganic fiber board 3P, which is a plate material constituting the sound absorbing layer 3, is longer and longer than the vibration damping plate 7P, which is a plate material constituting the vibration damping base layer 4. It suffices if they are arranged at positions shifted by a predetermined amount in the vertical direction.
Moreover, as a location (fixed location) for connecting the damping plate 7P and the gypsum plate 5P with the glass fiber nonwoven fabric, a corner portion is used for the plate material that is lined through, and a length direction is used for the plate material that is laid on the footstep. What is necessary is just to be fixed to the board | plate material which comprises the said base layer for sound insulation in the vicinity of the said 2 corner | angular part of the board | plate material which adjoins two corners and the width direction of two corner | angular parts.

Further, as shown in FIG. 5A, for example, if a gap G having a width of about s = 5 mm is provided between the adjacent damping plates 7P, problems such as flooring and thrusting can be prevented. .
As a method of providing the gap, for example, as shown in FIG. 6A, the dimension length A in the width direction and the length direction of _one damping plate 7P ₁ of adjacent damping plates 7P, 7P _{1. 1} may be shorter than the dimension length A of the other damping plate 7P by twice the width of the gap G (2 s). In this case, the length shorter damper plate 7P ₁ dimensions, to the inorganic fiber sheet 3-Way, further adhere shifted by the same dimensions in length and width s of the gap G than 50mm, respectively in the width direction and length direction.
Alternatively, as shown in FIG. 6B, the dimension length in the width direction and the length direction of both of the adjacent damping plates 7P and 7P ₁ (hereinafter referred to as damping plate 7P ₂ ) is set to the inorganic fiber plate 3P. The dimension length may be as short as the width s of the gap G. In this case, similarly to the embodiment, the damping plate 7P ₂ may be bonded to the inorganic fiber plate 3P while being shifted by 50 mm in the width direction and the length direction.
On the other hand, as shown in FIG. 5B, in the conventional example in which the inorganic fiber plate 3P and the vibration damping plate 7P are not displaced, the integrated vibration damping plate 7P and the inorganic fiber plate 3P are placed on the slab surface 2S. When arranging, it is necessary to make the gap G constant by using a spacer or the like.
On the other hand, in the present invention, since the gap G can be provided between the adjacent damping plates 7P simply by arranging the adjacent inorganic fiber boards 3P to abut each other, the conventional example of FIG. Compared with, the workability can be greatly improved.

Moreover, in the said embodiment, although the sound absorption layer 3 was formed with the inorganic fiber board 3P, as shown to Fig.7 (a), (b), the location etc. which face the wall 9 among sound absorption layers, The sound absorbing layer located in the peripheral part of the chamber where the load is likely to concentrate is a rubber sound absorbing layer 10 including a rubber part 11 placed on the slab surface and a plate part 12 provided on the rubber part 11. If the sound-absorbing layer 3 located on the center side other than the peripheral part of the room where the absorption of impact due to a person's falling or the like is required is made of the inorganic fiber board 3P, the subsidence of the floor is effectively suppressed. In addition, it can exhibit excellent cushioning properties.
As the rubber part 11 of the rubber sound absorbing layer 10, the plate surface is a square shape in plan view, the plate part 12 side is formed into a flat surface, and the side contacting the slab surface 2S is formed of a rubber block body formed into an uneven surface. 12 is comprised from the structural plywood, for example.
Specifically, as shown in FIG. 8 (a), the rubber part 11 has a longitudinal length of a plate surface of a long rectangular plate portion 12 having a predetermined thickness and formed into a rectangular shape having a long plate surface. Attached at a predetermined pitch along the direction. In this way, by attaching a plurality of rubber portions 11 to the lower surface of the plate portion 12 with a predetermined pitch therebetween, the cost can be reduced and the sinking of the peripheral portion of the floor of the chamber can be reliably suppressed. .
In addition, as shown in FIG.8 (b), it is good also as a structure which arrange | positions the inorganic fiber board 3P between the rubber parts 11. FIG.
Moreover, as rubber which comprises the rubber | gum part 11, it is preferable to use the rubber | gum with comparatively high hardness whose Shore A hardness is 40 degree | times-70 degree | times so that the sinking of the floor finishing layer 6 can be prevented, for example.
Further, when the rubber portion 11 and the plate portion 12 are joined with an adhesive or the like, and the rubber portion 11 is fixed to the slab surface 2S using an adhesive or the like, the unevenness of the slab surface 2S can be effectively absorbed. At the same time, the floor impact sound reduction performance can be improved.

1 floor structure, 2 floor slab, 2S slab surface, 3 sound absorbing layer, 3P inorganic fiberboard,
4 Damping ground layer, 4P ground plywood, 4Q damping sheet, 5 sound insulation ground layer,
5P glass fiber non-woven gypsum board, 6 floor finish layer, 6P floor finish board,
7P damping plate, 8 fixing member, 9 wall,
10 Rubber sound absorbing layer, 11 Rubber part, 12 Plate part.

Claims (7)

A floor structure comprising a floor slab, a sound absorbing layer provided on the slab surface of the floor slab, a foundation layer provided on the sound absorbing layer, and a finishing layer provided on the foundation layer,
The foundation layer includes a vibration suppression foundation layer provided on the sound absorbing layer side, and a sound insulation foundation layer provided on the finish layer side,
The sound insulation base layer, the vibration suppression base layer, and the sound absorption layer each comprise a plurality of plate members,
When the extension direction of one side of the plate member constituting the sound insulation base layer is the width direction and the extension direction of the other side is the length direction,
The plate member constituting the sound absorbing layer is disposed at a position shifted by a predetermined amount in the width direction and the length direction with respect to the plate member constituting the vibration suppression base layer,
The plate members constituting the vibration damping underlayer is joint tension through, and, at the corners, the floor structure you characterized in that it is fixed to the plate member constituting the sound insulating underlayer. A floor structure comprising a floor slab, a sound absorbing layer provided on the slab surface of the floor slab, a foundation layer provided on the sound absorbing layer, and a finishing layer provided on the foundation layer,
The foundation layer includes a vibration suppression foundation layer provided on the sound absorbing layer side, and a sound insulation foundation layer provided on the finish layer side,
The sound insulation base layer, the vibration suppression base layer, and the sound absorption layer each comprise a plurality of plate members,
When the extension direction of one side of the plate member constituting the sound insulation base layer is the width direction and the extension direction of the other side is the length direction,
The plate member constituting the sound absorbing layer is disposed at a position shifted by a predetermined amount in the width direction and the length direction with respect to the plate member constituting the vibration suppression base layer,
Two corners of the plate member constituting the damping foundation layer, the plate member constituting the damping foundation layer being straddled in the width direction and adjacent in the length direction; The plate member constituting the sound insulation base layer is fixed in the vicinity of the two corner portions of the plate member constituting the vibration suppression base layer adjacent to each other in the width direction of the two corners. Floor structure. The floor structure according to claim 1, wherein a gap is provided between adjacent plate members of the vibration suppression foundation layer . The floor structure according to any one of claims 1 to 3 , wherein a plate member constituting the sound absorbing layer is fixed to a plate member constituting the vibration damping base layer with an adhesive. The plate member constituting the sound insulation base layer is jointed, and the plate member constituting the vibration suppression base layer is formed at the four corners of the plate member constituting the sound insulation base layer. floor structure according to any one of claims 1 to 4, characterized in that it is fixed to the plate member constituting the base layer. The plate member constituting the sound insulation base layer is straddled in the width direction,
The plate member constituting the vibration suppression base layer has two corners of the plate member constituting the sound insulation base layer adjacent to each other in the length direction, and the sound insulation adjacent to the width direction of the two corners. in the vicinity of the two corners of the plate member constituting the base layer, according to any one of claims 1 to 4, characterized in that it is fixed to the plate member constituting the sound insulating underlayer Floor structure. Among the sound absorbing layers, a sound absorbing layer located in a peripheral portion of the chamber includes a rubber block and a body placed on a slab surface, and a rubber sound absorbing member provided with a plate member provided on the rubber block body. Layer,
The floor structure according to any one of claims 1 to 6 , wherein the sound absorbing layer located on the center side other than the peripheral part of the chamber is a fiber sound absorbing layer formed of inorganic fibers.

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