JPH0720248Y2 - Sound insulation structure of buildings - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a sound insulation structure for a building.

[Prior Art] In order to increase the transmission loss inside and outside a room for the purpose of preventing external noise in a building and preventing the sound generated in the room from leaking to the outside, it is necessary to increase the sound insulation of the room. It should have good sound absorption.

The target of sound insulation is the outer wall, ceiling, floor, partition wall, etc. of the building.

The materials constituting each of these parts are rich in the sound insulation and sound absorption, and the heavier the weight, the larger the transmission loss and the sound insulation.

However, in reality, it is not possible to make the material thickness unlimited, and since the frame itself does not have sound insulation in the woodworking frame structure, it has been traditionally used as a structural frame that constitutes the outer wall, ceiling, floor, partition walls, etc. of the building. , Interior materials fixed to this and /
Alternatively, an appropriate space is provided between the interior material and / or the exterior material, and the interior material and / or the exterior material is made of a member having a high sound insulating property and a high sound absorbing property to provide a sound insulating effect.

For example, in a concrete house, the structural frame of the wall made of concrete or concrete blocks,
Supports such as furring strips, joists, and wild rims are assembled on the upper or lower surface of the slab, and sound absorbing materials and heat insulating materials are put inside them, and inner surface wall materials, ceiling finishing materials, floor finishing materials on the surface of the support equipment. Is used.

In other words, the room with sound insulation is completely doubled through the space so that a large transmission loss can be obtained in a wider frequency range compared to a case where the rooms are simply superposed without the space.

[Problems to be Solved by the Invention] However, since the conventional double structure is developed from the interior surface, it has many acoustic defects, for example, a solid sound transmitted through a support for supporting interior materials. Further, there is a problem that the sound of the adjacent room can be heard due to the resonance phenomenon caused by the spring in the air layer.

As an example, FIG. 8 shows a conventional general sound insulation structure.

In this structure, the inner layer wall material 3 is attached to the concrete wall 1 via the furring strip 2.

That is, according to this structure, the inside and the outside of the room are acoustically communicated with each other via the furring strip 2, and the front and back are structurally connected to each other. Further, when the interior material is attached due to the resonance phenomenon, the sound insulation performance may be deteriorated, and it is extremely difficult to solve the acoustic defect.

This invention has been made in order to solve the above problems, and disconnects the acoustic connection between the structural body and the interior material and / or exterior material, and suppresses the resonance phenomenon due to the air layer, The purpose is to improve the sound insulation effect.

[Means for Solving the Problems] In order to achieve the above object, the sound insulation structure for a building according to the present invention has a structure in which the structural body and the interior material and / or the exterior material are arranged at predetermined intervals in a vertical and horizontal matrix form. In a building in which a space is provided by a plurality of arranged support members and joined, each support member, a bracket fixed to the structural body side, and a bracket fixed to the interior material and / or exterior material side, It is characterized in that it is constituted by a rubber-like elastic body which is vulcanized and bonded between these brackets and is bonded in a state of being sandwiched between the both brackets.

[Operation] The structural body and the interior material and / or the exterior material are joined via the rubber-like elastic body, and the two are acoustically almost completely isolated by the damping effect of the rubber-like elastic body. It

[Embodiment] An embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a perspective view showing a fireproof sound insulation wall made of concrete block to which the present invention is applied, FIG. 2 is a partially enlarged perspective view showing a mounting structure of a furring strip fixed to the sound insulation wall, and FIG. 3 is a sectional view thereof. is there.

In the figure, 10 is a slab, 12 is a beam integrated with the lower surface of the slab 10, and 14 is a wall body on the lower surface of the beam 12, which constitutes a partition wall in which A-type concrete blocks are laminated in multiple stages.

A plurality of supports 13 are arranged and fixed on the surface of the wall body 14 at predetermined intervals in a matrix in the vertical and horizontal directions.

The furring strips 18 are fixed to the supports 16 arranged in the vertical direction, and are arranged in tandem on the surface of the wall body 14. An inner wall member 20 is fixed to the surface of each furring strip 18.

As shown in FIGS. 2 and 3, the support 16 is a pair of fixing brackets formed by forming an iron plate into an angle shape.
A rubber-like elastic body 163 is vulcanized and bonded between 161, 162,
The brackets 161, 162 sandwich the rubber-like elastic body 163 and are arranged in opposite directions and symmetrically in a non-bonded state.Each of them is a mounting surface for the wall 14 even if it is a mounting surface for the wall 14. It's okay. The mounting surface for the wall 14 or the furring strip 18 may be unique.

2 for each mounting part 161a, 162a of each bracket 161, 162
Two mounting holes 161b, 162b are formed.

Then, in the state where the support 16 is fixed to the wall body 14 via the screw B so that the mounting portion 161a of the one bracket 161 is located below, the rear end portion of the other bracket 162 is separated from the wall body 14. The mounting portion 162a on the front surface is joined to the furring strip 18.

The furring strip 18 constitutes a receiver for the inner wall member 20, and is made of a rail-shaped galvanized steel plate having a rip-shaped cross section, and its end face is arranged at an arrangement interval corresponding to the fixing interval of the support tool 16. A plurality of fixing windows 18a are opened in the longitudinal direction at substantially equal intervals, and a recess 18b is formed at the upper edge of the window 18a.
Two screw holes 18c corresponding to 2b are opened, and the mounting portion 162a of the bracket 162 is inserted into the window portion 18a so that the mounting portion 162a is flush with the front surface side of the concave portion 18b. The furring strip 18 is supported by the support 16 in this state.

Then, screw B through one mounting hole 162b and screw hole 18c.
The furring strip 18 is fixed to the support 16 by being screwed into.

In the fixed state, the back surface of the furring strip 18 does not contact the wall body 14 and is supported by the wall body 14 in a floating state with a predetermined separation distance.

The inner wall material 20 is a gypsum board or an inner layer base material in which a sound insulation layer and a sound absorption layer are laminated in addition to the gypsum board, and a marking 20a corresponding to the arrangement of the support 16 is drawn on the surface thereof.

Then, tapping screw C at the intersection of the marking 20a.
When tapped, the tapping screw C is screwed into the furring strip 18, and as a result, the interior material 20 is fixed to the surface of the furring strip 18.

In the fixed state of the inner wall member 20, the surface weight is received by the furring strip 18, and the inner wall member 20 is firmly fixed to the surface of the wall body 14.

After fixing the inner wall material 20, by applying a cloth or other finishing material on the surface, and edging the upper and lower peripheries with a skirting board, a furring strip, etc.,
Complete the finishing wall.

In the completed state, the sound incident from the outside to the wall 14 side, or the sound incident from the inner wall material 20 to the wall material 14 side, the support 16,
It becomes extremely small due to the damping effect of the space d corresponding to the total thickness of the furring strip 18.

Further, the sound propagating through the support 16 is converted into friction energy by the rubber-like elastic body 163 and attenuated.

Therefore, even from this portion, it is not propagated to the furring strip 18 or the wall body 14, and the transmission loss can be significantly increased as compared with the conventional case.

If the space d is filled with a heat insulating material or a sound absorbing material, the sound insulation effect can be further enhanced.

Further, this first embodiment shows a case suitable for a sound insulation structure for a partition wall.

However, this invention can be applied not only to walls, but also to sound insulation of ceilings, floors, or outer layers.

In this case, the mounting members corresponding to the furring strips have different construction terms such as nomo (for the ceiling), joists (for the floor), etc. The structure is fixed to the structural body, and the ceiling finishing material and floor finishing material are attached, so that the structure completely cuts the space and disconnects.

Next, FIGS. 4 and 5 show a second embodiment of the support 16.

In the figure, two upper brackets 162-1 and 162-2 are stacked and sandwich the recess 18b.

On the other hand, a pair of protrusions 18d is provided in the recess 18b, and the protrusions 18d are sandwiched by the brackets 162-1 and 162-2.
d is sandwiched between the two and is stopped by appropriate frictional force.

In this embodiment, the screw B is not required when fixing the furring strip 18 to the support 16, so that the assembling work can be simplified.

In the above embodiment, when the strength of the interior material and / or the exterior material itself can be expected, the furring strips and other mounting members may be omitted and directly fixed to the support 16.

Further, the sound insulation structure of the present invention can be applied not only to a concrete structure but also to a building of various construction methods such as a woodworking frame structure, a lightweight steel frame frame structure and a PC panel structure.

Next, the effect of this invention is shown in FIGS. 6 (a), (b) and 7
This will be described with reference to the graph in the figure.

First, FIG. 6 (a) shows a conventional sound insulation structure, and FIG. 6 (b) shows the sound insulation structure of the present invention.

The figure shows an example in which the inner wall member 42 is fixed to both sides of the lightweight steel frame body 40, and a heat insulating material 46 is filled between the body 40.

In the conventional example, the inner wall member 42 is fixed via the furring strip 44, and in the present invention, the inner wall member 42 is directly fixed via the support 16 described above.

That is, the conventional example and the present invention are different only in the means for supporting the inner wall material, and other conditions are exactly the same.

Then, as a result of measuring the sound pressure level difference penetrating the both for each frequency band, the values shown in FIG. 7 were obtained.

In this example, the sound insulation structure A of the present invention is a conventional sound insulation structure B.
Compared with the above, the sound pressure level difference (that is, a low sound pressure level) is remarkably high in the entire frequency band, and it is clear that the effect of using the support of the present invention is sufficient.

[Effect] As is clear from the graph of FIG. 7, according to the present invention, the structural body and the interior material and / or the exterior material are almost completely acoustically isolated by the damping effect of the rubber-like elastic body. It was confirmed that the sound insulation structure was obtained by the double wall effect.

Therefore, in this invention, the structural body and the interior material and / or
Alternatively, the structural connection with the exterior material can be almost completely cut off, and the sound insulation effect can be remarkably improved.

[Brief description of drawings]

FIG. 1 is a perspective view showing a fireproof sound insulation wall made of concrete block to which the present invention is applied, FIG. 2 is a partially enlarged perspective view showing a mounting structure of a furring strip fixed to the sound insulation wall, and FIG. FIG. 4 is a perspective view showing a second embodiment of the support tool 16, FIG. 5 is a sectional view of the same, and FIGS. 6 (a), 6 (b) and 7 are views for explaining the effect of the present invention. 6 (a) and 6 (b) are cross-sectional views showing the sound insulation structure of the conventional example and the present invention, FIG. 7 is a graph for explaining the sound pressure level difference in the structure of FIG. 6, and FIG. FIG. 6 is a sectional view showing a conventional general sound insulation structure. 14 …… Wall (structural frame) 16 …… Supporter 20 …… Inner wall material (interior material and / or exterior material) 161,162 …… Bracket 163 …… Rubber-like elastic body d …… Space

Claims (1)

[Scope of utility model registration request] 1. A building in which a space is provided between a structural skeleton and an interior material and / or an exterior material by a plurality of supports arranged at predetermined intervals in a vertical and horizontal matrix,
A bracket fixed to the side of the structural body, a bracket fixed to the side of the interior material and / or the exterior material, and vulcanization-bonded between the brackets and sandwiched between the brackets. A sound insulation structure for a building, comprising a rubber-like elastic body bonded in a state.