JP2007314969A - Sound-insulating building material for building, and sound-insulating floor structure of building - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sound-insulating building material for a building, which has high sound-insulation performance and which dispenses with much labor for construction on a job site, and a sound-insulating floor structure of the building. <P>SOLUTION: In the sound-insulating floor 41 of the building, a sound-insulating structural material 3 is interposed between plywood 2 and a supporting plate 43. In the sound-insulating structural material 3, two frame members 5 are held at a fixed interval by a holding member 7. Additionally, only a tiny-area portion of the holding member 5 is brought into contact with the plywood 2 and the supporting plate 43; the holding member 5 has a hollow portion 23; and a top plate 15 and a bottom plate 17 are connected together by right and left thin plate-like side plates 9 alone. Thus, a portion, where sounds (vibrations) are transmitted downward from above, of the sound-insulating structural material 3 has a tiny cross-sectional area. Consequently, the sounds generated on an upper floor are hardly transmitted to a lower floor, so that the sound-insulating floor 41 of the building can exert the high sound-insulation performance. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a sound insulation building material for a building and a sound insulation floor structure for a building, and more particularly to a sound insulation building material and a building having a high sound insulation performance and which does not require time and labor for construction on site.

In buildings with two or more floors, the upper floors have a sound insulation structure so that the sound of the upper floors does not resonate with the lower floors. As this sound insulation structure, various things such as those in which a foaming synthetic resin is interposed between the upper floor floor and the lower floor ceiling are adopted, but none of them can exhibit sufficient sound insulation performance. Is the current situation.
In addition, the conventional sound insulation structure has a problem that it takes time and labor for the construction on site.

  The present invention has been made paying attention to the above-mentioned conventional problems, and provides a sound insulation building material and a sound insulation floor structure for a building that have high sound insulation performance and that do not require time-consuming work on site. That is the purpose.

  The present invention has been made to solve the above-mentioned problems, and the invention of claim 1 comprises a plate material constituting a floor of a building and the like, and a sound insulation structure material fixed to the back surface of the plate material, A sound insulating construction material for a building, comprising: two frame members made of a rigid material; and a holding member made of an elastic material that holds the frame member at a predetermined interval.

  According to a second aspect of the present invention, in the sound insulating building material for a building according to the first aspect, the holding portion has a hollow portion, and an interposed material having a sound absorbing performance is interposed in the hollow portion. It is a sound insulation building material of the characteristic building.

  Invention of Claim 3 is the sound insulation building material of the building described in Claim 1 or 2, The sound-absorbing material is provided in the back surface of the board | plate material.

  The invention according to claim 4 is the sound insulation building material according to any one of claims 1 to 3, wherein the plate material is provided with at least two sound insulation structures. Material.

  According to a fifth aspect of the present invention, in the sound insulation building material for a building according to the fourth aspect, the plate material is rectangular, and the sound insulation structure material provided at the left and right ends of the plate material is provided on the side provided with the sound insulation structure material. The other sound-insulating structural material is provided at a position closer to the left and right end sides of the plate material than the projecting dimension of the sound-insulating structural material. It is a sound insulation building material for building.

  The invention of claim 6 is the sound insulation building material of a building according to any one of claims 1 to 5, wherein the plate material is rectangular, and the sound insulation structure material has one end portion in the front-rear direction protruding from the end surface of the plate material, A sound insulation building material for a building, characterized in that the other end part enters the one end part side from the end face of the plate material at a distance equal to or larger than the projecting dimension of the one end part.

  A seventh aspect of the invention is a sound insulation floor for a building characterized in that the sound insulation building material for a building according to any one of the first to sixth aspects is combined so that the end faces of the plate members are joined together. It is a structure.

  In the sound insulation building material for buildings and the sound insulation floor structure for buildings of the present invention, high sound insulation performance can be obtained. In addition, the construction at the site does not take time and the construction can be performed easily.

A sound insulation floor structure diagram of a building according to Embodiment 1 of the present invention will be described with reference to FIGS.
The sound insulation building material 1 is composed of a plywood 2 as a single plate material and two sound insulation structures 3.
The plywood 2 is square, has a side dimension of 900 mm and a thickness dimension of 12 mm, and is used as a building flooring. A sound insulation structure material 3 is fixedly provided at the left end and the center of the back surface of the plywood 2.

The detailed structure of the sound insulation structural member 3 will be described.
The sound insulation structural member 3 is constituted by two frame members 5 and four holding members 7.
The frame member 5 is made of stainless steel or steel steel as a rigid material, and has a width dimension of 35 mm and a length dimension of 900 mm. The frame member 5 has a shape in which both right and left end portions are bent at a right angle, and two frames are provided as a set. Round holes 6 are formed at both ends of the frame member 5.

  The holding member 7 is made of synthetic rubber as an elastic material. The holding member 7 is formed in a substantially rectangular tube shape, and a bending portion 11 that slightly protrudes outward is formed at the substantially vertical center of the left and right side plates 9. The left and right side plates 9 are continuously formed with internal holding plates 13a and 13b, and a pair of upper and lower internal holding plates 13a and 13b are provided. The upper internal holding plate 13 extends inward from the vicinity of the upper ends of the pair of flexures 11, and the lower internal holding plate 13 b is inward from the vicinity of the lower ends of the flexures 11. It extends toward.

The pair of internal holding plates 13 a and 13 b are independent of each other and are provided with a certain gap with respect to the left and right side plates 9, the top plate 15 and the bottom plate 17. Therefore, a gap 19 is formed between the internal holding plate 13a, the left and right side plates 9, and the top plate 15. Further, a gap 21 is formed between the internal holding plate 13b, the left and right side plates 9, and the bottom plate 17.
The gaps 19 and 21 have shapes corresponding to the cross-sectional shape of the frame member 7.

Opposite regions of the upper and lower inner holding plates 13a and 13b are hollow portions 23, and an interstitial block 25 made of styrene foam as an interposing material is fitted in the hollow portion 23.
Round holes 27 and 29 are formed in the top plate 15 and the internal holding plate 13a, respectively.
Round holes 27 and 29 are also formed in the bottom plate 17 and the internal holding plate 13b, respectively.

A total of four holding members 7 are provided at both end portions and midway portions of the two frame members 5. The holding member 7 is attached by fitting the frame member 5 into the gaps 19 and 21. Accordingly, the two frame members 5 are held by the holding member 7 at a predetermined interval. The holding members 7 are arranged at equal intervals.
The round holes 27 and 29 of the holding member 7 and the round holes 6 of the frame member 5 are positioned so as to be coaxial.

  The two sound insulation structural members 3 are fixed to one plywood 2. That is, as shown in FIG. 4, the wood screw 31 is screwed into the plywood 2 and further passes through the round hole 27 of the bottom plate 17, the round hole 6 of the frame member 5, and the round hole 29 of the internal holding plate 13b. The holding member 7 is fixed to the plywood 2 with the bottom plate 17 installed. Accordingly, a gap is opened between the frame member 5 and the plywood 2.

  FIG. 2 is a view of the sound insulating building material 1 as seen from the back side. In the figure, the sound insulation structural member 3 arranged at the left end protrudes 20 mm from the left end surface of the plywood 2. In addition, the sound insulation structure material 3 disposed in the center portion enters 430 mm from the right end surface of the plywood 2. That is, the sound insulation structure material 3 disposed in the central portion is provided at a distance from the right end face of the plywood 2 to the left by a distance more than the protruding size (20 mm) of the sound insulation structure material 3 disposed at the left end portion. ing.

Further, the sound insulation structure material 3 is arranged such that the front end which is one end in the front-rear direction protrudes 20 mm from the front end surface of the plywood 2 and the rear end which is the other end in the front-rear direction enters 20 mm from the rear end surface of the plywood 2. Has been placed. In other words, the sound insulation structure material 3 has a rear end portion that enters the front end portion side from the end face of the plywood 2 by the same distance as the protruding dimension of the front end portion. In addition, if the distance which penetrates into the front-end part side from the end surface of the plywood 2 of the sound-insulation structure material 3 is more than the protrusion dimension of a front-end part, it will not be limited to 20 mm.
In a region between the two sound insulation structural members 3, a sound absorbing material 33 made of synthetic resin having sound absorption or heat insulation performance is provided in a state of being attached to the plywood 2.
Accordingly, the plywood 2 is provided with a margin 35 at the right end in FIG. 2 and a margin 37 at the rear end.

Next, a sound insulation floor 41 of a building using the sound insulation structure material 3 of this building will be described with reference to FIGS.
Reference numeral 48 denotes a partition material for partitioning the upper and lower floors of the building. The partition material 48 is installed and fixed to a joist constituting a building (not shown). A bundle 50 that can be adjusted in height by a screw mechanism is arranged side by side on the partition member 48. A support plate 43 is supported on the bundle 50.
An elastic sheet 54 made of synthetic rubber is laid on the support plate 43. The sound insulating building materials 1 are installed and arranged on the elastic sheet 54, and are arranged adjacent to each other without a gap so that the end faces of the plate members 2 are joined to each other. Only the top plate 15 of the holding member 7 (upper side in FIG. 4 but lower side in FIG. 6) is joined to the support plate 43, and the frame member 5 is attached to the support plate 43. There is no contact and there is a gap.
An elastic sheet 56 is laid on the upper surface of the plate member 2, and a finishing material 58 is laid on the elastic sheet 56, and the finishing material 58 constitutes the surface of the upper floor.

The overhanging portion 35 of the sound insulation building material 1 is overlapped by the protruding portion of the sound insulation structure material 3 provided at the left end portion of the plate 2 of the sound insulation building material 1 arranged on the right side in FIGS.
In addition, the overlapping portion 37 of the sound insulation building material 1 includes a protruding portion of the sound insulation structure material 3 provided at the front end portion of the plate 2 of the sound insulation building material 1 disposed on the upper side (actually the rear side) in FIG. Overlap.

In the sound insulation floor 41 of the building configured as described above, the sound insulation structure material 3 is interposed between the plywood 2 and the support plate 43. In the sound insulation structural member 3, the two frame members 5 are held by the holding member 7 at a predetermined interval. Further, only a very small area portion of the holding member 5 is in contact with the plywood 2 and the support plate 43, the holding member 5 has a hollow portion 23, and the top plate 15 and the bottom plate 17 are thin plate-like left and right side plates. Only 9 is connected. For this reason, the sound insulation structure material 3 has a very small cross-sectional area of a portion that transmits sound (vibration) from above to below.
Furthermore, since the holding member 5 is also made of synthetic rubber and the side plate 9 is formed with the bent portion 11, the holding member 5 itself has a function of attenuating sound (vibration). Therefore, the sound generated on the upper floor is hardly transmitted to the lower floor, and the sound insulation floor 41 of this building exhibits high sound insulation performance.

Moreover, since the partition member 48 and the support plate 43 are in contact with each other via the bundle 50, the cross-sectional area of the portion that transmits sound (vibration) from the upper side to the lower side is extremely small even at the contact point.
Therefore, the sound generated on the upper floor is hardly transmitted to the lower floor, and the sound insulation floor 41 of this building exhibits high sound insulation performance.

On the other hand, the frame member 5 to which the holding member 7 is attached is made of a rigid material, has a certain width, is relatively long, and is disposed over the entire length of the plywood 2 in the front-rear direction. Therefore, the load applied from above the plywood 2 can be stably received.
In addition, since the interposition block 25 and the sound absorbing material 33 have sound absorbing or heat insulating performance, they contribute to sound insulation and heat insulating.

  The sound insulation building material 1 of the present embodiment has the sound insulation structure material 3 fixed to the plywood 2, and the sound insulation floor 41 can be constructed simply by arranging the sound insulation building material 1 as described above, so that the construction is simple, It is possible to save time and effort.

FIG. 7 shows a sound insulating building material 51 according to the second embodiment.
The sound insulation building material 51 of the present embodiment is obtained by replacing the interposition block 25 in the sound insulation building material 1 of the first embodiment with a coil spring 55, and the other structure and usage are the sound insulation construction of the first embodiment. The same as material 1. The coil spring 55 is elastically deformed to attenuate sound (vibration) and exhibit sound absorbing performance.

The embodiment of the present invention has been described in detail above. However, the specific configuration is not limited to this embodiment, and the present invention can be changed even if there is a design change without departing from the gist of the present invention. included.
For example, in the said embodiment, although the case where the sound-insulating building material of this invention was used for the floor of a building was shown, this invention is not limited to this, You may use it for the wall of a building.
Further, the plywood may be a rectangle as well as a square.
Furthermore, it is good also as a structure which fixes one or three or more sound-insulation structure materials to the board | plate material of 1 sheet.

The number of the holding members 7 attached to the frame member 5 that is a set of two may be 1 or more and 3 or less, and may be 5 or more.
Moreover, in the said embodiment, although the frame member 5 is hold | maintained in the state exposed from the holding member 7 of the sound-insulation structure material 3, this invention is not limited to this, In the clearance gap parts 19 and 21 of the holding member 7, The frame member 5 may be completely accommodated in the holding member 7 without being exposed. That is, the length dimension of the frame member 5 may be equal to or less than the length dimension of the holding member 7 and the frame member 5 may be held so as to be completely hidden by the holding member 7.
The sound insulation structural member 3 protrudes from the right end surface in FIGS. 5 and 6 of the plate member 2, but may be configured to protrude from the left end surface. In this case, the overlap of the plate material 2 is provided at the left end. In addition, although the sound insulation structure material 3 protrudes from the front end surface of the plate member 2, it can be configured to protrude from the rear end surface. In this case, the overlap is provided at the front end of the plate 2.
In addition, the board | plate material 2 may be not only a square but a rectangle.

  The sound insulation building material of the present invention can exhibit high sound insulation performance when used for floors and walls of buildings.

It is a perspective view of the sound insulation building material of the building which concerns on Embodiment 1 of this invention. It is the figure which looked at the sound insulation building material of the building of FIG. 1 from the back side. It is a fragmentary perspective view of the sound insulation building material of the building of FIG. It is AA sectional drawing of FIG. It is a top view of the sound insulation floor comprised with the sound insulation building material of the building of FIG. FIG. 6 is a partial cross-sectional view of FIG. 5. It is a figure corresponding to FIG. 4 of the sound insulation building material of the building based on Embodiment 2 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,51 Sound insulation building material of a building 2 Plywood 3 Sound insulation structure material 5 Frame member 6 Round hole 7 Holding member 9 Side plate 9 Bending part 13a, 13b Internal holding plate 15 Top plate 17 Bottom plate 19, 21 Gap part 23 Middle part 25 Via Mounting block 27, 29 Round hole 31 Round hole 33 Sound absorbing material 35 Overlay 37 Overlay 41 Sound insulation floor 43 Support plate 48 Partition material 50 Bundle 54 Elastic sheet 56 Elastic sheet 58 Finishing material 55 Coil spring

Claims (7)

  It consists of a plate material constituting a floor of a building, and a sound insulation structure material fixed to the back surface of the plate material. The sound insulation structure material is composed of two frame members made of a rigid material, and the frame members are spaced apart from each other by a certain distance. A sound-insulating building material for a building comprising a holding member made of an elastic material that is opened and held.   The sound insulation building material according to claim 1, wherein the holding portion has a hollow portion, and an interposed material having a sound absorbing performance is interposed in the hollow portion. Building material.   The sound insulation building material for buildings according to claim 1 or 2, wherein a sound absorbing material is provided on the back surface of the plate material.   The sound insulation building material for buildings according to any one of claims 1 to 3, wherein the plate material is provided with at least two sound insulation structures.   The sound insulation building material for a building according to claim 4, wherein the plate material is rectangular, and the sound insulation structure material provided at the left and right ends of the plate material is disposed so as to protrude from the end surface of the plate material on the provided side. The other sound insulation structure material is provided at a distance from the end face of the other left and right sides of the plate material to the left and right sides more than the protruding dimension of the sound insulation structure material. .   The sound insulation building material for a building according to any one of claims 1 to 5, wherein the plate material is rectangular, the sound insulation structure material has one end portion in the front-rear direction protruding from an end surface of the plate material, and the other end portion is the one end portion. A sound insulation building material for a building, characterized in that it enters the one end side from the end face of the plate material at a distance equal to or greater than the protruding dimension. A sound-insulating floor structure for a building, wherein the sound-insulating building material for a building according to any one of claims 1 to 6 is combined so that end faces of plate members are joined together.

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