JPH03145697A - Noise insulating equipment - Google Patents

Abstract

PURPOSE:To obtain the noise insulating equipment whose noise insulating characteristic is excellent by placing a sheet whose cross section is a projecting part shape on the incident surface and the radiating surface of a sound of a noise shielding member, and interposing an air layer between the projecting part sheets. CONSTITUTION:At the time of arranging noise insulating members 1 of the same shape, a projecting part shape sheet 2 whose cross section is semicircular is placed on the incident surface side and the radiating surface side of a sound, respectively, and the noise insulating members 1 are moved in the direction as indicated with an arrow B, and arranged so that each noise insulating member inserts and holds the projecting sheet 2. They are executed to all the adjacent surfaces at the time of placing uniformly the noise insulating member on the wall surface. In this case, the projecting part sheet 2 is placed on both the incident surface 4 side and the radiating surface 5 side of a sound in a clearance 3 of each noise insulating member 1, and each noise insulating member 1 is allowed to adhere closely by deformation of the projecting part, and an air layer 6 is interposed between the projecting part sheets 2. In such a way, a high-cut acoustic filter whose noise insulating characteristic is excellent is constituted, and an excellent noise insulating performance is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a sound insulation device that combines a plurality of acoustic members having the same shape to provide an ideal acoustic space.

BACKGROUND OF THE INVENTION In recent years, it has become mainstream to optimally arrange sound absorbing, reflecting, and sound insulating acoustic members in a room to create an ideal sound reproduction space.

Conventionally, as a method of this type, there has been a method in which acoustic members having the same shape are connected and arranged in a room.

This will be explained below with reference to the drawings.

As shown in FIG. 6, when sound insulating the wall surface of a room, a sound insulating member 1 having the same shape is placed on the wall surface as shown in FIG. 7 to realize a wall surface with a sound insulation effect. There is.

Problems to be Solved by the Invention In such a conventional sound insulation device, since gaps 9 are created between the sound insulation members 1, sound leaks through the gaps 9, making it impossible to achieve an excellent sound insulation effect.

The present invention is intended to solve the above problems and aims to realize an excellent sound insulation effect.

Means for Solving the Problems The present invention achieves the above object by arranging a sheet material having a convex cross section at the joining part of the sound insulating member on both the sound incidence surface and the sound emission surface of the gap. , an air layer is interposed in the gap between the convex sheet materials.

Effect of the present invention With the above-described configuration, the convex sheet reduces the leakage of sound from the gap between the sound insulation members, and the convex sheet is arranged on both the sound emission surface and the sound incidence surface, so that the sound leakage is reduced. can be reduced twice.

Furthermore, since there is an air layer between the convex sheets, 18d
A high-cut acoustic filter having a sound insulation characteristic of B10ct is configured and can attenuate incident sound.

EXAMPLE Hereinafter, an example of the present invention will be described with reference to the drawings. FIG. 1(a) is a perspective view showing an embodiment of the sound insulation device of the present invention, and FIG. 1(a) is an enlarged view of the portion 3 shown in FIG. 1(a). As shown in the drawing, sound insulating members 1 having the same shape are lined up, and convex-shaped sheets 2 each having a semicircular cross section are placed on the sound incidence side and the sound emission side, respectively. The sound insulating members 1 are moved in the direction of arrow B in a) and arranged so that each sound insulating member sandwiches the convex sheet 2. These steps are performed on all adjacent surfaces when arranging the sound insulating member like a wall surface. As shown in the sectional view shown in FIG. 2, the convex sheet 2 is placed in the gap 3 of each sound insulating member l on both the sound incident surface 4 side and the sound emission surface 5 side, and the convex portions are deformed so that each The sound insulating members 1 are brought into close contact with each other. The structure is such that an air layer 6 is interposed between the convex sheets 2.

The operation of the above configuration will be described. By deforming the convex sheet, the gap between the sound insulation members can be eliminated and leakage of direct sound from the gap can be reduced. Furthermore, by arranging the convex sheet on both the sound incident surface and the sound emission surface, an air layer can be interposed between the sheets. Acts as. That is, in FIG. 3, capacitor C corresponds to this air layer, and inductance L is the mass component of the sheet. Therefore, a high-cut acoustic filter with better sound insulation properties is constructed, and the incident sound is attenuated by the high-cut filter.

As described above, according to the sound insulation device of this embodiment, the convex sheets can reduce sound leakage from the gaps between the sound insulating members, and the air layer interposed between the convex sheets reduces the leakage of sound by 18 dB.
An excellent high-cut acoustic filter of 10 ct is constructed and provides excellent sound insulation performance.

In this embodiment, a method of arranging two convex sheets is shown, but a sound insulating sheet 7 having two convex portions in one sheet as shown in FIG. 4 or a deformable sheet as shown in FIG. Needless to say, two foam sheets may be interposed.

Effects of the Invention As is clear from the above explanation, according to the present invention, by arranging sheets having a convex cross section on the sound incident and radiation surfaces of the sound insulating member, an air layer is created between the convex sheets. This 18 dB 10 ct high-cut filter can provide a sound insulation device with excellent sound insulation characteristics.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a sound insulation device according to an embodiment of the present invention, FIG. 2 is a plan view seen from the direction of arrow A in FIG. 1, and FIG. 3 is an equivalent circuit showing the sound insulation device of the present invention. Figures 4 and 5
The figure is a plan view showing another embodiment of the present invention, and FIGS. 6 and 7 are a perspective view and a front view of a conventional sound insulation device. 1... Sound insulation member, 2... Convex sheet.

Claims (1)

[Claims] By arranging a sheet material having a convex cross-section on both the sound incident surface and the sound emission surface at the connecting portion of sound insulating members having the same shape, an air layer is interposed between the sheet materials having the convex shape. A sound insulation device featuring: