JPS6351549A - Sound blocking building member structure - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to architectural members constituting floors, etc. in dispersed housing and collective housing. The present invention relates to a sound insulating building member structure that has been improved to significantly improve sound insulating properties.

[Prior art and its problems] In buildings, upper floors are made of a decorative board adhered to the surface of a base material such as plywood. When family members walk or objects fall on this floor, the impact generates noise, which reverberates through the structure of the house and causes an extremely unpleasant nuisance to the residents downstairs.

This invention was made to eliminate the above-mentioned problems, and it effectively absorbs the noise generated by impacts such as falling objects, drastically reducing noise to an unprecedented degree, and significantly reducing noise levels. Therefore, when applied to the floor of a building, it has an excellent effect that it does not disturb the residents downstairs and is vital to the living environment. The purpose is to provide an architectural shrine structure for M sound.

In addition, in reinforced concrete houses, the thickness of the slab is purposely increased to insulate the sound and make it expensive, but the structure of the present invention allows the slab to be of the minimum necessary thickness, making it extremely economical.

[Means for Solving the Problems] In order to solve the above problems, the present invention provides a porous first sound-absorbing material that is provided when forming a building such as a flooring material, and a back surface of this sound-absorbing material. A second sound absorbing material is attached to the space layer so as to separate a predetermined space layer from the space layer, and the space layer is formed into a non-porous plate shape using a flexible material, and the space layer is divided into upper and lower chambers. A structure comprising a sheet arranged, an absorbing member arranged so as to have a predetermined gap in each chamber of the spatial layer, and an elastic board provided on the back surface of the second sound absorbing board. is adopted.

[Function] According to the present invention configured as described above, the noise level is reduced by the sound absorbing plate, and the spatial layer, the nonwoven fabric, and the sound insulating sheet act synergistically to effectively block the noise. Physically, it will be drastically reduced.

[Effect of the invention 1] According to the present invention, the noise level is reduced by the sound-absorbing plate, and the sound-insulating sheet, the space layer, and the nonwoven fabric act synergistically to effectively block the noise, so that the sound absorption plate reduces the noise level. Therefore, it is possible to provide a sound insulating building member structure which exhibits an excellent and unprecedented effect of significantly reducing the noise generated by the noise.

[Example] Embodiments of the present invention will be described below with reference to the drawings.

First, in FIGS. 1 and 2 showing a first embodiment of the present invention, 1 is, for example, a decorative veneer applied to the floor A, and 3 is a decorative veneer 1 attached to the back surface of the veneer 1 with an adhesive. As shown in Figure 3, this is a porous first sound-absorbing board that is loaded with sound-absorbing materials such as asbestos or valves, and is generally referred to as hardboard, softboard insulation, or ceramic-based building materials. has been done. This first sound absorbing plate 3 may be configured as follows. That is, the material used for the first sound absorbing plate 3 is one obtained by expanding natural rubber or various synthetic rubbers such as styrene butadiene to a volume of at least 50 percent using various known foaming techniques. In addition, a single foam of ethylene vinyl acetate copolymer or ionomer, or a foam of a blend of these resins can also be used. Generally, it may be a foam made of a general-purpose synthetic resin such as polyethylene. Reference numeral 2 denotes a second sound absorbing root disposed across a spatial layer 2a, and this spatial layer 2a is made so as to maintain its shape with a lattice-like spacer S. Reference numeral 4 denotes a non-porous and thin sheet made of a flexible material such as rubber, which is disposed in the space layer 2a so as to divide it into upper and lower chambers x1y. Nonwoven fabrics 5 and 6 having different roughnesses are disposed in each chamber X and y of this space layer 2a, respectively. Reference numeral 7 denotes an elastic plate made of pyrene that is adhered to the back surface of the second sound absorbing plate 2 with an adhesive, and is provided so as to close the hole in the second sound absorbing plate 2. This elastic board 7 is lff on the concrete floor.
1, it also has the effect of absorbing the unevenness of concrete, which is convenient.

In this case, metal such as lead is mixed in the adhesive between the deck 1 and the first sound absorbing material 3 in the form of powder or flakes (for convenience, it is indicated by symbol M in FIG. 1). Especially because of this! The low frequency components of A-ro are attenuated. Further, the nonwoven fabric 5.6 may be made by cutting short synthetic fibers such as glass wool, wool, low heat generation styrene, or the like.

The floor A constructed in this manner is applied to an upper floor of a house as shown in FIG. Note that 8 is a ceiling board on the lower floor, and a lighting fixture 10 is suspended from this ceiling board 8 via a cord 9. If you walk on the floor A or drop something in this state, the impact will generate g&, but this noise will be absorbed by the first and second sound absorbing plates 2.3, and the spatial layer 2a, the nonwoven fabric 5.6, and the sound insulation sheet 4 act synergistically to effectively block noise. For this reason, the QB generated as described above is significantly reduced, and the noise transmitted to the downstairs is significantly reduced, so that the residents etc. do not suffer from unpleasant nuisance. In this case, powdered lead may be mixed not only in the sound insulating sheet 4 but also in the adhesive in general. This has the advantage that the adhesive particularly effectively absorbs noise at low frequencies. In this case, not only lead but also copper powder or flakes may be used as the metal. Alternatively, lead and copper may be mixed.

Furthermore, metal powder and flakes may be mixed at a predetermined ratio. Moreover, it has already been understood from experiments that any metal shape other than spherical can be effectively applied.

Next, FIGS. 5(a) and 5(b) show a second embodiment of the present invention.

In this second embodiment, a protrusion 1a and a recess 1b are respectively formed on the side surface of the veneer 1, and the first sound absorbing plate 3 and sound insulating sheet 4 are slightly extended from the deck 1 toward the protrusion 1a. As shown in FIG. 5(b), the two members are connected by fitting the protrusion 1a into the recess 1blC.

In addition, in each of the above embodiments, this invention was applied to the floor A of the house, but the scope of application is not limited to this only. It can be widely applied to construction materials in general, including, for example, stair treads, the floor of a gymnasium, and the walls and ceilings of ordinary houses.

In this case, the third embodiment of this invention is shown in FIG. 6, when it is applied to the ceiling space S of the house 1. With this configuration, it is possible to effectively block out the noise generated from a car or the like while the vehicle is running, and to keep the space R inside the house as quiet as possible.

Furthermore, the space layer 2a is not limited to being divided into two upper and lower chambers X and y as in the above embodiment, but may be divided into a plurality of chambers, and the nonwoven fabric may be arranged in each of the plurality of chambers. Further, the nonwoven fabric may be formed into pieces in units of predetermined lumps, and these pieces may be arranged sparsely rather than evenly in each chamber.

Furthermore, nonwoven fabrics may be selectively arranged in the plurality of chambers of the space layer 2a.

It has been experimentally found that the sound insulation effect is higher when the nonwoven fabric is disposed in the space layer 28 in a non-filled state so that there are gaps, rather than when it is filled in the space layer 28 without any gaps.

In addition, various changes may be made in the specific implementation without departing from the gist of this invention.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a first embodiment of the present invention, FIG. 2 is a sectional view of the floor, and FIG. 3 is a plan view and a sectional view of a sound absorbing board.
Figure 4 is a sectional view showing an example that is used for the floor of a house, and Figure 5 (
a) and (b) are cross-sectional views of the second embodiment of this invention, and Fig. 6 shows the third embodiment when this invention is applied to the wall of a house and the large moon plate.
This is an example.

Claims (1)

[Claims] 1) A porous first sound absorbing material provided when forming a building such as a flooring material, and a second porous sound absorbing material attached to the back side of this sound absorbing material so as to be separated by a predetermined spatial layer. a sound absorbing material; a sheet disposed in the space layer formed in a non-porous plate shape using a flexible material so as to divide the space layer into upper and lower chambers; and a sheet provided in each room of the space layer. A sound-insulating building member structure comprising: sound-absorbing members arranged so as to have gaps therebetween; and an elastic board provided on the back surface of the second sound-absorbing board. 2) The sheet or sound-absorbing plate is impregnated with heavy metal pieces (powder) having a specific gravity of 6.0 or more, such as lead in the form of powder, flakes, granules, or polyhedral granules. 1. The structure of a building member for sound insulation according to item 1. 3) The sound-insulating building member structure according to claim 1, wherein the sound-absorbing members in each room in the spatial layer have different roughnesses. 4) The sound-insulating building member structure according to claim 1, wherein the sound-absorbing plate and the sheet are adhered to each other with an adhesive mixed with powder or flaky lead. 5) The sound insulation building member structure according to claim 1, wherein a spacer is disposed between the first and second sound absorbing plates to maintain the shape of the spatial layer. . 6) The sound insulation building member structure according to claim 1, wherein the space layer is divided into two upper and lower chambers by the sheet. 7) The sound insulation building member structure according to claim 1, wherein the spatial layer is divided into a plurality of upper and lower chambers by a plurality of sheets. 8) The sound-insulating building member structure according to claim 7, wherein the sound absorbing member is selectively arranged in a plurality of rooms of the spatial layer.