JP2007009690A - Wooden floor structure of apartment block - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a camber-board flooring structure thinning a thickness from a structure while having an excellent soundproof effect, being capable of freely conducting even an electricity and an OA wiring or the like and facilitating even the execution of works. <P>SOLUTION: The camber-board flooring structure has a sound-insulating sheet 2 stretched on a structure face, a backing set 3 mounted on the sound-insulating sheet, a backing board 4 stretched on the backing set 3, the sound-insulating sheet 5 stretched on the backing board and a wooden flooring 6 stretched on the sound-insulating sheet 5. The backing set 3 have soundproof cushioning members 7 arranged on the sound-insulating sheet at regular intervals, floor joists 8 in rows on these cushioning members 7, hold-down members 10 and mat-shaped soundproof materials 9 filled among floor joist rows. The hold-down members 10 are composed of a band body 10a consisting of an elastic material having a sound-insulating property. The band bodies 10a are abutted against the top faces of the floor joists 8, and bent along both side faces of the floor joists from the top-face edges of the floor joists, and lower both sides are bent in a horizontal shape and seat sections 100 and 100 brought into contact with the sound-insulating sheet 2 are manufactured, and the seat sections 100 and 100 are fixed on the structure. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a wooden floor structure of an apartment.

There are many requests for wooden floors in apartments. The biggest problem at that time is the transmission of sound to the lower floor. Conventionally, the following method has been adopted as a countermeasure.
1) Direct Pasting Method A wooden flooring that is integrated with soundproofing materials such as rubber and other soundproofing / vibration shockproofing materials on the back of wooden flooring is attached to the structure of an apartment such as concrete with an adhesive. The construction method is the same as that for jutaning.

2) System construction method 1
A method of spreading a soundproof and vibration-proof mat, placing a flooring fixed mat on top of it and sticking wooden flooring.
3) System construction method 2
This is a method in which soundproof and vibration-proof rubber feet with legs are placed on a structure such as concrete, and a soundproofing base plate is received on these pillars and wooden flooring is affixed to them.

The construction method 1) has the advantages that the construction is simple and the floor is not thickened, but the soundproofing effect cannot be expected so much and the wiring space for electricity and the like is difficult to take.
Although the method 2) can be expected to have a soundproofing effect, there are problems in that the floor is thicker than 100 mm, a special soundproof and vibration-proof mat is used, the price is high, and the floor is easily fluffy. .
The construction method 3) can be expected to have a soundproofing effect, and can easily eliminate the unadjustment of the existing floor level. However, when the floor is thickened to about 200 mm, the price is increased, and the plate is used for flooring. There was a problem in that it was not possible to stop the characteristics of wood such as warping and bending.

  The present invention has been made in order to solve the above-described problems. The object of the present invention is to have a good soundproofing effect while being thin from the structure and free of electricity and OA wiring. It is possible to provide a wooden flooring structure of an apartment that can be easily and quickly constructed.

  In order to achieve the above object, the wooden floor structure of a condominium of the present invention includes a sound insulation sheet stretched on a structural surface made of concrete slab, a base assembly provided on the sound insulation sheet, and a base assembly. A base plate, a sound insulation sheet stretched on the base plate, and a wooden flooring stretched on the sound insulation sheet, the ground set is arranged on the sound insulation sheet at a predetermined interval. A shock-absorbing member made of an elastic material having sound insulation properties, a joist lined up on the shock-absorbing member, a presser member for fixing the joist line, and a mat-like soundproofing material filled between the joist lines, and The pressing member is made of a band of elastic material having sound insulation, and the band is applied to the upper surface of the joist, bent along the joist both sides from the upper face edge of the joist, and the lower both sides are bent horizontally. The seat is in contact with the sound insulation sheet. It is characterized by securing to the structure. (Claim 1)

  Further, the wooden floor structure of the apartment of the present invention comprises a sound insulation sheet stretched on a structural surface made of concrete slab, a grounding set provided on the sound insulation sheet, and a ground plate stretched on the grounding set. The sound insulation sheet stretched on the base plate and the wooden flooring stretched on the sound insulation sheet, wherein the base set is a sound insulating property arranged at predetermined intervals on the sound insulation sheet. A cushioning member made of an elastic material, a joist lined up on the cushioning member, a presser member fixing the joistline row, and a mat-like soundproof material filled between the joist rows, and the presser member Comprises an elastic material molded body having a sound insulating property having a top surface portion for pressing the upper surface of the joists, a side surface portion for pressing the side surfaces of the joists, and a seat portion to be placed on the sound insulating sheet, and the pressing member is covered with the joists. Specially fixed to the structure It is set to. (Claim 2)

  The present invention is applied not only to the room and hallway of a newly built apartment, but also to the case of reforming the room and hallway of an existing apartment.

  According to claim 1 of the present invention, the finished surface of the wooden flooring can be secured with a thin thickness of about 50 to 60 mm from the structure, and the soundproofing base is provided with a soundproofing sheet and a soundproofing disposed on the sound insulating sheet at a predetermined interval. Shock absorbing members made of elastic elastic material, joists lined on the shock absorbing members, presser members for fixing the joist rows, and a base set including a mat-like soundproof material filled between the joist rows Since it is composed of a sound insulation sheet that is stretched between the base plate and the wooden flooring, it has a stable wooden floor structure and a thin thickness, but it has good sound insulation performance and good heat insulation performance, The base assembly can be used as the base of the partition wall, and electricity and OA wiring can be freely performed.

In addition, the pressing member is made of a band of elastic material having a sound insulating property, the band a is applied to the upper surface of the joist, bent along the both sides of the joist from the upper edge of the joist, and the lower sides are made horizontal. The seat is bent and in contact with the sound insulation sheet, and the seat is fixed to the structure. Therefore, it is sufficient to use an inexpensive member. It does not require special skills, and the existing technology of the construction shop and carpenter is sufficient, and a wooden floor with high soundproofing effect can be constructed in a short period of time.

In addition, the sound and vibration given to the wooden flooring is weakened by the sound insulation sheet directly underneath, and the foundation plate is supported by joists through the soundproof strips of the foundation assembly. The sound and vibration of the base plate are not transmitted to the joists, and since the soundproofing material is closely packed between the joists, they are not transmitted in the horizontal direction and no reverberation is generated. Furthermore, the joists are not directly supported but indirectly supported by the cushioning member on the side of the structure, so that they are not transmitted downward, and the residual sound is finally a sound-insulating sheet affixed between the cushioning member and the structure surface. Will be blocked.
Therefore, excellent soundproofing can be realized while the finished thickness from the surface of the wooden flooring to the structure is as thin as about 50 to 60 mm.

According to claim 2 of the present invention, it is possible to obtain a good soundproofing performance with a stable wooden floor structure and a thin thickness, a good heat insulating performance, and the base set can be used as the base of the partition wall. Excellent effects such as freedom of electricity and OA wiring can be obtained. And the pressing member comprises an elastic material molded body having a sound insulating property having an upper surface portion for pressing the upper surface of the joist, a side surface portion for pressing the side surface of the joist, and a seat portion to be placed on the sound insulating sheet, Since the covering and the seat are fixed to the structure, an excellent effect is obtained that the base assembly process can be performed easily and efficiently.
In addition, the sound and vibration applied to the wooden flooring are weakened by the sound insulation sheet directly underneath, and the foundation plate is relieved through a presser member made of an elastic material with sound insulation of the foundation assembly. The sound and vibration of the base plate are not transmitted to the joists, and the soundproofing material is closely packed between the joists, so they are not transmitted in the horizontal direction and no reverberation is generated. . Further, the joist is not directly supported but indirectly supported by the structure part side by the buffer member, so that the sound is not transmitted downward, and the residual sound is also provided by the sound insulating sheet 2 stuck between the buffer member and the structure surface. Eventually shut off.
Therefore, excellent soundproofing can be realized while the finished thickness from the surface of the wooden flooring to the structure is as thin as about 50 to 60 mm.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
1 to 3 show an embodiment of a soundproof wooden floor structure of an apartment according to the present invention.
Reference numeral 1 denotes a structure such as a condominium room or a corridor, which is generally made of a concrete slab. The structure is generally surveyed prior to construction, and the level is adjusted by applying mortar on the surface. However, even if the level is adjusted by setting the thickness of the buffer member itself, which will be described later. Good.

Reference numeral 2 denotes a sound insulation sheet attached to the entire surface of the structure surface 101 whose level has been adjusted.
Reference numeral 3 denotes a grounding group provided on the sound insulating sheet 2, and a shock absorbing member 7 made of a sound insulating elastic material such as rubber disposed on the sound insulating sheet 2 at a predetermined interval, for example, 250 to 500 mm, and the shock absorbing members The joists 8 and 7 are arranged in rows and have a mat-like soundproof material 9 that is closely packed between the joists. The joists 8 extend in the Y direction and the X direction, and these “Y direction and X direction” include cases where the floor has an appropriate slope depending on the shape of the floor.

  The position of the joists 8 in each row is fixed by a band-shaped pressing member 10 mainly composed of a sound insulating elastic material. Further, in order to eliminate a partial thickness increase due to the attachment of the presser member 10, a level adjustment strip 11 made of a sound insulating elastic material is formed on the joist upper surface exposed between the presser members 10 and 10. Thus, the upper surface of the soundproof material 9 and the upper surface of the pressing member 10 are flush with each other.

  Reference numeral 4 is a plywood / artificial wooden panel, and the base plate laid on the upper surface of the base set 3, 5 is a sound insulating sheet attached in close contact with the base plate 4, and 6 is applied on the sound insulating sheet 5. Desired wooden flooring.

  The soundproofing wooden floor according to the present invention, when expressed in different terms, is a sound insulating sheet layer, a joist row group supported by a cushioning member, and a base layer composed of a soundproofing material filled between the joist rows, It is comprised from the multilayer structure of the baseplate layer spread | overlaid, the sound insulation sheet layer which covers a baseplate layer, and the wooden flooring layer affixed on this.

4 to 11 show an example of a soundproof type wooden floor structure step by step. In general, the sound insulation sheet attaching step, the base assembly step, the base plate attaching step, the sound insulating sheet attaching step and the wooden flooring attachment are shown. It consists of a process. In this example, the direction in which the wooden flooring is pasted is the X direction.
In a normal case, the structure level adjustment is performed to adjust the state of the existing structure in the part where the wooden flooring is installed to a level according to the work content. The existing structure 1 is generally a concrete slab, but the level varies depending on the accuracy of construction and the slab's slab, so that the level is equalized with cement-based or resin-based mortar, etc. Secure slopes and step surfaces. However, when the construction area is small, the level adjustment may be performed by adjusting the thickness of the buffer member in the base assembly process described later.

[Sound insulation sheet pasting process]
This process is performed to obtain the final soundproofing effect to the lower floor of the residual sound that has been reduced by the soundproofing effect by the upper layer (underlying layer layer + underlying plate layer + sound insulation sheet layer). For example, a sound insulation sheet 2 having a length of 1.0 to 1.2 mm is used, and as shown in FIG. 4, the entire wooden flooring target range and the rising portions 1 a and 1 a near the wall are covered in a bag shape. The united sound insulation sheet 2 has a flat mating portion that has a predetermined overlap width and is bonded with a sound insulation tape 200 having an adhesive surface. The direction at this time is preferably a direction intersecting the joist row (X direction in this example) in order to make the joist level uniform.
The rising part 2 'at the wall secures a sufficient rising dimension to the extent that there is no problem in finishing the wall, and this is also affixed to the base of the wall with a sound insulating tape.
Thus, the state shown in FIG. 4 is obtained.

[Background assembly process]
This process is shown in FIGS. 5 to 8 and is a characteristic and important process in the present invention, which reliably absorbs the life-generating sound directly applied to the wooden flooring and does not transmit the vibration to the structure unit 1. The purpose is to secure a ground structure that enables safe and reliable installation of an important part of the living space such as the floor, while preventing reverberation due to air vibrations.

The materials used in this step are the buffer member 7, the joist 8, the presser member 10, the level adjustment strip 11, and the soundproof material 9.
The buffer material 7 uses a rubber material such as a 90 mm square and a thickness of 1 to 4 mm, for example, and is arranged in a grid shape at intervals of 250 to 500 mm on the sound insulating sheet 2 as shown in FIG.

The joists 8 are arranged in a straight line on the buffer members 7 and 7 having such an arrangement. In this example, they are arranged in the X direction. The joist 8 is a beam or a skeleton member that stably fixes a wooden flooring and supports a load applied to the flooring, and is obtained by cutting plywood or artificial wood. As dimensions, for example, the width is 90 mm and the height is 24 mm, and the joist 8 is supported by the buffer member 7 on the lower surface. The buffer member 7 supports the joist 8 while preventing vibration and sound from being directly transmitted from the joist 8 to the structure 1.
The buffer member 7 is prepared in several thicknesses, or the height on the sound insulation sheet 2 is changed by stacking standard thicknesses, so that the level can be adjusted at the same time. it can. That is, the buffer member 7 also serves as a level adjusting material.

  In this way, each joist row that is configured is fixed by the presser member 10 so that the position does not shift. The holding member 10 has soundproofing properties such as rubber, and in this example, a band body 10a and an attachment member 10b for fixing the band body 10a to the structure 1 are used. The attachment member 10b may be an adhesive, but in this example, a concrete nail paired with a washer is used.

The band 10a can be easily obtained by, for example, cutting a rubber band wound in a roll shape having a width of 90 mm and a thickness of 2 mm. The length of the band 10a is assumed to be a joist width + twice the joist thickness + twice the length attached to the sound insulating sheet.
The belt body 10a is placed at a certain length, for example, at the position of every other cushioning member 7, as shown in FIG. Then, the side part is bent so as to follow the joist side face, bent from the position in contact with the sound insulating sheet 2 to form the seat parts 100, 100, and the seat parts 100, 100 are fixed to the structure 1 with the attachment member 10b.

  Thereby, the position of each joist row is firmly fixed at predetermined intervals. Moreover, when the joist is directly fixed to the housing with a nail or bolt, vibration is transmitted to the housing through the nail or bolt, but a seat is formed with a sound insulating material and indirectly attached by the mounting member 10b applied thereto. Since the attachment is performed, the vibration is blocked by the band 10a and is not transmitted to other parts.

As described above, when each joist row is fixed, the level of the upper part of the joist 8 becomes uneven by the thickness of the strip. Therefore, the level adjusting strip 11 is disposed on the upper surface of the joist 8 between the strips 10a, 10a. If necessary, lightly adhere to the upper surface of the joist 8 with an adhesive. The level adjustment strip 11 is simple because it is only necessary to cut the same material as the strip 10a to a predetermined length.
As a result, the joists 8 in each joist row are in contact with the sound-insulating cushioning material 7 and the upper surfaces are also in contact with the sound-insulating belt 10a and the level adjustment strip 11, so to speak, they are sandwiched by the sound-insulating material. Transmission is greatly reduced. In addition, since the entire upper surface is covered with the band 10a having the same thickness and the level adjustment strip 11, the upper surface level is uniform without unevenness. In other words, as shown in FIG. 7A, the joist 8 has a shape in which the entire circumference of the cross section is wrapped with an elastic sound insulating material.
The cord C such as an electric wire or a telephone line can be freely wired by cutting the joists 8 and 8 to provide a gap as shown in FIG.

  Since the above operation results in the state of FIG. 7, the soundproof material 9 is then filled. When the base plate 4 is pasted directly on the joist row, and the wooden flooring 6 is pasted, the cavity between the joist rows under the base plate 4 is sent to the lower floor in the same way as the drum part of the drum. Since the phenomenon of expansion is caused, the soundproofing material 9 is filled in order to prevent the phenomenon and to improve the heat insulating performance of the floor at the same time.

  The soundproofing material 9 may be any known material, for example, a rock wool mat, a glass wool mat, or the like having a thickness of about 20 to 30 mm is used, and is filled between the joist rows as shown in FIG. . Although fixing and adhesion are not required, the soundproofing material 9 is filled without a gap so that the lower surface of the soundproofing material 9 is in contact with the sound insulating sheet 2 and the upper surface matches the level of the band body 10a and the level adjusting strip 11. FIG. 9 shows a state where the soundproofing material filling process is completed.

[Underlaying process]
This step is performed in order to hold down the base set 3 from above and to obtain a stable and reliable fixing of the wooden flooring.
As the material, for example, a 900 × 1800 × 12 mm plywood or an artificial wooden panel is used, and the base plate 4 is spread in close contact with the base set 3 and fixed to the joists 8 with fixing brackets such as screw nails and wood screws. The fixing metal must not reach the structure 1 and has a length that does not exceed the total of the buffer member 7 + joist 8 + strip 10 a + base plate 4. FIG. 10 shows the completed state of this process.

[Sound insulation sheet pasting process]
This step is performed in order to insulate the sound generated in the life directly given to the wooden flooring 6 in the vicinity of the generation source so that the lower soundproof structure functions more effectively.
The sound insulation sheet 5 may be the same as the sound insulation sheet 2 used in the previous sound insulation sheet sticking step, or may be less accurate depending on the required sound insulation performance.
It is preferable that the method of application is completely spread over the construction area, not overlaid, but cut with a sharp blade from the top of the overlap to remove excess, butt cuts, and a piece of cloth tape with no thickness. The rising part connected to the wall should be raised enough to prevent the wall finishing, and fixed with a baseboard. FIG. 11 shows the state after this process. Since the sound insulating sheet 5 serves as an intervening layer that prevents the base plate 4 and the wooden flooring 6 from coming into direct contact with each other, the sound insulating effect is higher than installing a sound insulating sheet under the base plate 4.

[Wooden flooring pasting process]
This step is the final step, and the wooden flooring 6 to be used is not limited and is not limited to any material such as firewood or cedar. However, it is preferably a sufficient drying material, and a complete plate or three layers are combined. A plate or the like is generally used. A dimension is arbitrary, for example, a 12-30 mm thing is used, and it arranges so that a joist row may be orthogonal.
The soundproof wooden floor shown in FIGS. 1 to 3 is completed through the above steps.

The above soundproof wooden floor structure and construction method are merely examples, and the present invention is not limited thereto.
1) The shock-absorbing member 7 is not necessarily a small piece, but may be a belt-like member that supports the entire lower surface of the joist 8. In this case, no gap is generated between the sound insulating sheet 2 and the surface.

2) Although the buffer member 7 is a separate member separated in the above embodiment, it may be a unit or assembly that is joined to the bottom surface of the joist 8 at predetermined intervals in advance as shown in FIG. In this case, the distribution work of the buffer member 7 can be omitted, and if the joist 8 is arranged on the sound insulating sheet 2, the joist row supported by the buffer member 7 can be obtained immediately.

3) The pressing member is not limited to being a band. That is, like the pressing member 10 ′ in FIG. 12B, the upper surface portion 102 that presses the upper surface of the joist 8, the side surface portions 103 and 103 that press the side surface of the joist 8, and the seat portions 100 and 100 that are set on the sound insulating sheet 2. It may be a molded body having.
In the case of this aspect, with the joists 8 arranged, the upper and side surfaces of the joists 8 are positioned by covering the joists 8 with the pressing members 10 ′ at predetermined intervals, and the seat portion 100 contacts the sound insulation sheet 2. Therefore, it is possible to perform the construction by a simple operation of simply fixing the seat portion 100 with an attachment member (metal fitting or adhesive).

The present invention includes the following construction method for a wooden floor structure of an apartment.
1) A process of stretching a sound insulation sheet on the structural surface, a joist is placed on the sound insulation sheet via a sound-proof cushioning member, and the joist position is fixed by a sound-proof presser member, and between each joist row Filling the soundproofing material to obtain a base assembly, a step of stretching a base plate on the surface of the base assembly, a step of stretching a sound insulation sheet on the base plate, and a wooden flooring on the sound insulation sheet And a band of elastic material with sound insulation is used as a pressing member, the shock absorbing member is placed on the sound insulating sheet, and the joist is placed on the shock absorbing member, The band is applied from the upper part of the joist, bent so as to follow the joist side from the upper edge of the joist, the lower part is bent to form a seat, and the seat is fixed to the structure.
2) A process of stretching a sound insulation sheet on the structural surface, a joist is placed on the sound insulation sheet via a soundproof cushioning member, and a joist position is fixed by a soundproof presser member, and between the joist rows Filling the soundproofing material to obtain a base assembly, a step of stretching a base plate on the surface of the base assembly, a step of stretching a sound insulation sheet on the base plate, and a wooden flooring on the sound insulation sheet In the process of taking the step of stretching and obtaining the base assembly, a pressing member made of an elastic material molded body having a sound insulating property and formed with an upper surface portion, a side surface portion bent from this, and a seat portion is used. Is placed on the sound insulation sheet, the presser member is placed on the joist, and the seat is fixed to the structure.
3) In the above 1) and 2), the level is adjusted by positioning a soundproof strip on the upper surface of the joist between the pressing members.

  The wooden floor of the present invention stably supports the base plate 4 using the joists 8, and the wooden flooring 6 is pasted thereon, so that domestic wood and local wood can be used depending on the interior design and taste preferences. It can be freely selected and used, and can be constructed using conventional methods. Therefore, domestic and local timber can be used for all interiors of condominiums, increasing the amount of use and revitalizing forestry. In addition, natural materials such as Muku's timber make it possible to specify a healthy housing for an apartment.

The wooden flooring 6 is supported by the base plate 4 at its entire lower surface, and the base plate 4 is supported by joists 8 at every required interval, and is also applied to the mat-like soundproofing material 9 filled at the same level between the joist rows. Because it touches, there is no fluffy feeling.
In the present invention, since the foundation set 3 including the joists 8 is provided, the foundation of the partition wall can be used by using the skeleton structure of the foundation set 3, and the degree of freedom of arrangement of the room and the partition can be increased. Moreover, since the soundproofing material 9 has heat insulation properties, the heat insulation performance of the floor can be enhanced.
In addition, since no adhesives are used, or even if they are used, there is no adverse effect on the human body due to harmful components.

As for soundproofing, the sound and vibration given to the wooden flooring 6 are weakened by the sound insulating sheet 5 directly below, and the soundproofing of the pressing members 10 and 10 ′ of the base assembly 3 is further attenuated by the sound insulating sheet 5. Since the joist 8 is supported by the joist 8 through the band 10a or the upper surface portion 102 and the level adjustment strip 11, the sound and vibration of the base plate 4 are not transmitted to the joist 8, and the soundproofing material 9 is provided between the joists 8. Is absorbed because it is densely packed, it is not transmitted in the horizontal direction, and no reverberation is generated. Furthermore, the joists 8 are not directly supported but indirectly supported by the structure portion side by the buffer member 7, so that they are not transmitted downward, and residual sound is also stuck between the buffer members 7, 7 and the structure surface. The sound insulation sheet 2 is finally cut off.
Therefore, excellent soundproofing can be realized while the finished thickness from the surface of the wooden flooring to the structure is as thin as about 50 to 60 mm.

Specific examples and results of performance experiments are shown below.
(1) Experimental equipment:
An upper and lower open box made of 20 mm foamed polystyrene on the outside of a cubic cylinder made of 24-ply plywood and having an inner dimension of 900 mm was created. A 900 × 900 × 20 mm plate was installed at a position 600 mm below the upper part of the box, and concrete was cast 100 mm thick on the upper part to provide an existing structural surface of the simulated apartment. The upper part of the concrete is a virtual living space, and the lower part is a downstairs virtual living space.
(2) Measuring method:
The following five types of wooden soundproof floors are installed on the existing structural surface of the simulated condominium, and golf balls (high-temperature impact sounds) and softballs (low-impact impact sounds) are dropped from the same height, and 500 mm from the concrete top surface. The sound volume was measured with a noise meter (LA 1240 manufactured by Ono Sokki) installed below.

(3) Types of wooden soundproof floors Comparative Example 1: As a concrete base Comparative Example 2: Placement floor method (system construction method 2), total thickness 95 mm.
Comparative Example 3: Soundproof sheet (1 mm) + propellant with soundproof and vibration-proof rubber feet (100 mm) + soundproof material (100 mm) + base plate (12 mm) + plywood flooring (15 mm), total thickness 128 mm.

Comparative Example 4: Sound insulation sheet (1 mm) + underground assembly (30 mm) + soundproof sheet (1 mm) + underground plate (12 mm) + Mugboard flooring (15 mm), total thickness 59 mm.
The foundation set is the same as that of the present invention described later.
The present invention: sound insulating sheet (1 mm) + underlying group (30 mm) + underlying board (12 mm) + soundproofing sheet (1 mm) ++ muffled board flooring (15 mm), total thickness 59 mm.
The foundation set employed the aspect of the first embodiment. That is, a joist row was composed of a rubber cushioning member + joist + a presser member made of rubber strip and a rubber strip, and a rock wool mat was filled between the joists.

The volume was measured three times, and the average value was obtained. A value when the falling object is a golf ball is defined as an A value (dB), and a value when the falling object is a soft ball is defined as a B value (dB).
In Comparative Example 1, the A value was 83.08 and the B value was 81.49.
In Comparative Example 2, the A value was 73.12 and the B value was 75.08.
In Comparative Example 3, the A value was 74.79 and the B value was 76.84.
In Comparative Example 4, the A value was 76.39 and the B value was 75.24.
Invention 3 had an A value of 71.86 and a B value of 74.23.

  As is clear from this result, it can be seen that the wooden floor of the present invention has a very good soundproofing performance despite its thin thickness.

It is a partial notch top view which shows an example of the wooden floor structure of the apartment by this invention. It is an expanded sectional view which follows the II-II line of FIG. It is an expanded sectional view which follows the III-III line of FIG. (A) is a top view which shows the completion state of the sound insulation sheet sticking process in this invention, (b) is sectional drawing. (A) is a perspective view of the shock absorbing material used for a base | substrate assembling process, (b) is a top view which shows the distribution state of a shock absorbing material. (A) The partial perspective view which shows the joist and presser member relationship of a base | substrate assembly process, (b) is a top view which shows the distribution state of a joist, (c) is a perspective view in the middle of distribution. (A) is a longitudinal front view of the ground set, (b) is a cross-sectional view taken along line XX of (a). It is a fragmentary perspective view which shows the soundproof material filling step of a foundation | substrate assembly process. (A) is a top view of the completed state of a base set, (b) is sectional drawing which follows the IX-IX line of (a). It is a partial notch top view in the state where foundation board pasting was finished. It is a top view which shows the state which the sound insulation sheet sticking process was finished. (A) and (b) are sectional views showing other modes of a joist, a buffer member, and a presser member in the present invention.

Explanation of symbols

1 structure
2 Sound insulation sheet
3 Groundwork group
4 Ground plate
5 Sound insulation sheet
6 Wooden flooring 7 Buffer member 8 joist 9 soundproof material 10, 10 'presser member 10a belt

Claims (2)

A sound insulation sheet 2 stretched on the structural surface 1 made of concrete slab, a base assembly 3 provided on the sound insulation sheet, a base plate 4 stretched on the base assembly 3, and a tension on the base plate In the thing provided with the provided sound insulation sheet 5 and the wooden flooring 6 stretched on the sound insulation sheet, the base set 3 is made of an elastic material having sound insulation properties arranged at predetermined intervals on the sound insulation sheet. A cushioning member 7, a joist 8 arranged on the cushioning member 7, a presser member 10 for fixing the joist row, and a mat-like soundproofing material 9 filled between the joist rows, and the presser The member 10 is made of an elastic material band 10a having a sound insulating property. The band 10a is applied to the upper surface of the joist 8, bent along the both sides of the joist from the upper edge of the joist, and horizontally bent at both lower sides. The seats 100 and 100 that are in contact with the sound insulation sheet 2 A wooden floor structure of an apartment, characterized in that the seats 100, 100 are fixed to the structure. A sound insulation sheet 2 stretched on the structural surface 1 made of concrete slab, a base assembly 3 provided on the sound insulation sheet, a base plate 4 stretched on the base assembly 3, and a tension on the base plate In the thing provided with the provided sound insulation sheet 5 and the wooden flooring 6 stretched on the sound insulation sheet, the base set 3 is made of an elastic material having sound insulation properties arranged at predetermined intervals on the sound insulation sheet. A cushioning member 7, a joist 8 forming a row on the cushioning member 7, a pressing member 10 'for fixing the joist row, and a mat-like soundproofing material 9 filled between the joist rows, and A sound-insulating elastic molded body having an upper surface portion 102 on which the pressing member 10 ′ presses the upper surface of the joist 8, side surface portions 103 and 103 that press the side surface of the joist 8, and seat portions 100 and 100 that are placed on the sound insulating sheet 2. The presser member 10 'is made of joist 8 A wooden floor structure of an apartment, characterized in that the seats 100 and 100 are fixed to the structure.

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