JPH0663703U - Acoustic adjustment panel - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a multifunctional acoustic adjustment panel with stable acoustic characteristics that can be easily attached to the base material of walls and ceilings. [Structure] An acoustic adjustment panel in which a sound absorbing material (5) and an enclosing material (6) for foaming polystyrene surrounding the sound absorbing material (5) are fixed to the back surface of each of the perforated area regions (M) divided into a plurality of boards (2) ( 1). At least 2 in each perforated area (M)
The sound absorbing holes (3) having different hole diameters are drilled at different stages to have different sound absorbing characteristics. The outer enclosure (6) is a box shape surrounding the sound-absorbing material (5) and has a protective portion (6
a) is formed, and the extension protection part (6a) is cut and separated from the outer covering (6) by a blade when the acoustic adjustment panel (1) is installed,
The back surface of the peripheral portion (2a) of the board (2) exposed by this separation is fixed to the wall base material with nails or screws.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an acoustic adjustment panel as a sound absorbing interior material that is attached to walls, ceilings, etc. of gymnasiums and music rooms.

[0002]

[Prior art]

 On the walls and ceilings of rooms such as gymnasiums and music rooms where acoustic design is important, perforated boards with sound absorption and reflectance according to the purpose of use in the room, and sound adjustment with sound absorbing material attached to this board Sound absorbing interior materials for panels are applied.

FIG. 6 shows the board (11) constituting the wall surface and the furring strip (8) of the wall base material to which the board (11) is attached. The board (11) is a rectangular plywood board, which is commonly called a soundproof board, or a non-combustible board. A large number of sound absorbing sound absorbing holes (12) with the same hole diameter are formed by drilling in the part except the peripheral portion. The furring (8) is assembled in a lattice shape, and each of the rectangular spaces (9) surrounded by the furring (8) is filled with a soundproofing material (13) such as glass wool or rock wool. As shown in Fig. 6 (c), the space (9) is filled with the soundproofing material (13), and then the peripheral edge of the back surface of the board (11) is fixed to the front surface of the furring strip (8) with nails or screws (not shown). It If the furring (8) is made of wood, nails are used, and if it is made of metal (aluminum), screws are used to fix the board (11).

FIG. 7 shows an acoustic adjustment panel (15) in which a soundproofing material (13) is fixed to the back surface of the board (11) by a back plate (16) and a frame plate (17). This acoustic adjustment panel (15) is commonly referred to as a sound absorbing / reflecting panel or a soundproofing panel, and the frame plate (17) is fixed to the peripheral edge of the back surface of the board (11). The periphery of the back plate (16) is fixed, and the soundproof material (13) is packed between the board (11) and the back plate (16). The back edge of the acoustic adjustment panel (15) is fixed to the front of the furring strip (8) with nails or screws.

[0005]

[Problems to be Solved by the Invention] The board of FIG. 6 and the board of the acoustic adjustment panel of FIG. 7 are effective for sound in any one of the low, middle, and treble bands of the audible frequency band. The diameter of the sound absorbing hole is designed to absorb sound. In addition, sound absorbing interior materials such as walls and ceilings in rooms such as gymnasiums are usually required to have sound absorption characteristics in the low, middle, and high frequency bands. Therefore, when installing dozens or hundreds of boards on a wall, ceiling, etc. in one room, prepare three types of boards, low-pitched boards, mid-pitched boards, and high-pitched boards with different sound absorption hole diameters. The sound is adjusted and designed in the room by installing the types in the appropriate arrangement. However, in the construction of such a board, the management of the type of the board and the management of the attachment of a specific type of board to a specific portion are complicated, and the workability is poor. Further, when a plurality of boards of the same type are arranged in series, sound absorbing holes having the same hole diameter can be seen over a wide range, and there is a problem in appearance in which a flicker phenomenon peculiar to a perforated plate is prominent.

Further, in the construction of the soundproofing interior material using the board of FIG. 6, since the sound absorbing material is embedded between the furring strips and then the board is fixed, the number of steps is large and the workability is poor. There was a problem that the maintenance of was troublesome. In addition, when the soundproofing material is embedded between the furring strips, when installing the soundproofing interior material in the field work where the board is mounted, the sound absorption coefficient after the construction will inevitably vary due to variations in the thickness of the soundproofing material. However, there was a problem that it became difficult to adjust the acoustics in the room.

Further, in the case of the acoustic adjustment panel of FIG. 7, since it is manufactured in a factory, the acoustic characteristics such as sound absorption coefficient are stable, and the acoustic adjustment in the room is facilitated. However, since the number of components such as boards and frame plates, back plates, sound absorbing materials, and the like are large, the weight and cost are high, and the plate thickness is large, making it difficult to fix it to the furring strip with nails or screws. However, there was a problem of poor workability.

An object of the present invention is to provide a multifunctional acoustic adjustment function capable of flexibly responding to complicated acoustic characteristic demands in a room. Moreover, it is easy to reduce the weight and is excellent in workability on walls and ceilings. To provide a sound control panel.

[0009]

[Means for Solving the Problems]

 An acoustic adjustment panel for achieving the above object of the present invention is a first perforated area region in which a plurality of acoustic adjustment sound absorbing holes having the same hole diameter are formed, and a hole diameter different from the sound absorbing holes in the first perforated area region. And a board whose surface is divided into a plurality of perforated area regions including a second perforated area region in which a plurality of sound absorbing sound absorbing holes are formed.

Further, the present invention is an acoustic adjustment panel in which a sound absorbing material having a back surface and an end surface surrounded by a surrounding material is fixed to the back surface of a predetermined perforated area region excluding the peripheral portion of the board. Achieve.

It is appropriate that the outer material surrounding the sound absorbing material on the back surface of the board is made of styrofoam, and the outer peripheral portion thereof is integrally provided with an extending protection portion connected along the outer periphery so as to be cut and separated by a blade. It is desirable to mechanically protect the styrofoam envelope with the extension protector.

[0012]

[Action]

 The sound absorption characteristics of the perforated area regions divided into a plurality of boards of one acoustic adjustment panel differ corresponding to the hole diameter of the sound absorption holes formed in each perforated area region, and as a result, It is possible for the acoustic adjustment panel to have multifunctional sound absorption characteristics in the low, middle, and high frequency bands.

Further, if the sound absorbing material and its surrounding material are fixed only on the back surface of the perforated area area of the board and the board and the sound absorbing material are integrated into a unit, the characteristics such as the sound absorption coefficient are stabilized and the acoustic adjustment is improved. It will be easy and accurate.

[0014]

【Example】

 One embodiment will be described with reference to FIGS. 1 to 4. The acoustic adjustment panel (1) shown in the figure consists of a rectangular board (2) directly attached with a sound absorbing material (5) and a surrounding material (6) surrounding it. The board (2) is a plywood board or a non-combustible board, and the sound absorbing material (5) is a rectangular plate-shaped glass wool or rock wool. The outer envelope (6) is a rectangular plate-like box surrounding the sound absorbing material (5), as long as it has a sound insulation function, and is, for example, a styrene foam that is lightweight, inexpensive, and excellent in moldability. It is formed.

The rectangular board (2) is divided into a plurality of perforated area regions (M), and a plurality of sound absorbing holes (3) are formed through each perforated area region (M). The hole diameter of the sound absorption hole (3) of one board (2) is divided into a plurality of stages so as to effectively absorb sound in at least two bands of low, middle and high sounds. For example, as shown in FIG. 1 (a), the board (2) is divided into four upper, lower, left, and right parts except for the central portion (2b) that intersects the peripheral portion (2a) of the board (2) in a cross shape. Divided into the fourth perforated area regions (M1) to (M4), the first and third perforated area regions (M1) (M3) on the diagonal of the board have a large number of identical grids. A large number of sound absorbing holes (3 ') with the same hole diameter are formed in a grid pattern in the other second and fourth perforated surface areas (M2) (M4) by forming a sound absorbing hole (3') with a hole diameter. 3 '') is formed by drilling. Here, the hole diameters of the sound absorbing holes (3 ′) in the first and third perforated area regions (M1) (M3) are the same as those of the sound absorbing holes (2) in the second and fourth perforated area regions (M2) (M4). Larger than 3 '').

Such a board (2) has effective sound absorption characteristics in at least two bands of low sound, middle sound, and high sound, and various sound absorption holes due to the sound absorbing holes (3) having different hole diameters and the arrangement form thereof. Demonstrate the adjustment function.

The sound absorbing material (5) and the surrounding material (6) are fixed only to the respective back surfaces of the perforated area regions (M) of the board (2). As shown in FIG. 2, the sound absorbing material (5) is attached to the back surface of the perforated area region (M) via a sheet having excellent sound permeability, for example, a gauze (4). The cheesecloth (4) is used for the purpose of hiding the sound absorbing material (5) from the outside of the sound absorbing hole (3) and improving the appearance of the board (2), and is not always necessary.

As shown in FIG. 3, the foam styrol envelope (6) finally becomes four independent rectangular boxes having the same size as each perforated area region (M), The sound absorbing material (5) is stored inside and protected. The open end faces of the four enclosure members (6) are fixed to the back surface of the board (2) with an adhesive. As shown in FIG. 2 (a), the initial shapes of the four enclosure members (6) are integrally connected by extension protection portions (6 a) that extend integrally with each outer circumference. A rectangular frame-shaped extending protection portion (6a) is integrally formed on the entire circumference of one rectangular outer enclosure (6). The extended protection part (6a) is in a state of being separated from the board (2), and has a thin wall as shown in FIG. 2 (c), which is partially formed along the boundary line with the surrounding material (6). Only the connecting portion (6b) is connected to the outer covering (6). By cutting the thin connecting portion (6b) with a blade (not shown), the extension protection portion (6a) can be easily cut and separated from the envelope member (6).

The styrofoam envelope (6) blocks the sound from the sound absorbing material (5), so that the sound absorbing rate of the board (2) and the sound absorbing material (5), and thus the acoustic adjustment panel (1). ) Stabilize the overall acoustic characteristics. The extension protection part (6a) of the outer enclosure (6) is located on the back surface of the peripheral part (2a) of the board (2), and is a rope added when the acoustic adjustment panel (1) is packed or transported. Protects the enclosure (6) from external forces from. This protection function facilitates packing and transportation of the acoustic adjustment panel (1) and construction work on walls and the like.

FIG. 4 shows an example in which the acoustic adjustment panel (1) is applied to, for example, the furring strip (8) of a wall base material. At the construction site of the acoustic adjustment panel (1), as shown in FIG. 3, the extension protection part (6a) of the outer enclosure (6) on the back surface is cut and removed. This cutting is performed easily and quickly because the connecting portion (6b) of the extended protection portion (6a) is a thin styrene foam. By removing the extension protection portion (6a), the peripheral portion (2a) of the back surface of the board (2) and the cross-shaped central portion (2b) are exposed, and the peripheral portion (2a) and the central portion (2b) of the rear surface are exposed. It is fixed to the corresponding furring strip (8) with nails or screws.

That is, as shown in FIGS. 4 (a) and 4 (b), the acoustic adjustment panel (1) in which four enclosure members (6) are fixed to the back surface of the board (2) is Enclose the outer enclosure (6) in each of the rectangular spaces (9) enclosed by brackets (), and fix the peripheral edge (2a) and center (2b) of the back surface of the board (2) to the furring strip (8). It will be constructed. Since the sound absorbing material (5) of the acoustic adjustment panel (1) and the outer envelope material (6) of the styrene foam are lightweight, the acoustic adjustment panel (1) is made as light as the weight of the board (2), and its transportation. And construction becomes easy. Also, since only the thin board (2) is nailed or screwed directly to the furring strip (8), the construction can be performed easily and in a short time, and the nails and screws used for fixing are short and inexpensive. Can be used.

As shown in FIG. 4A, the sound absorbing holes (3) of the acoustic adjustment panel (1) are divided into perforated area regions (M) each having a smaller area, and those having the same hole diameter. Since it is formed, the flicker phenomenon peculiar to the perforated plate is reduced.

The acoustic adjustment panel (1) of another embodiment shown in FIGS. 5 (a) and 5 (b) has a perforated area region (M) provided in four columns in a substantially square board (2). , The sound absorbing material (5) and the surrounding material (6) are fixed to the back surface of each of them. Large-diameter sound-absorbing holes (3 ') are formed in the left two rows of the perforated area (M) in four rows in Fig. 5 (a), and small-diameter sound-absorbing holes (3' ') are formed in the right two rows. To be done. This acoustic adjustment panel (1) is constructed by fixing the back surfaces of the peripheral portions (2a) of the four sides of the board (2) to a frame-shaped base material of a wall or ceiling.

The present invention is not limited to the above-described embodiment, but may be appropriately changed according to the application of the acoustic adjustment panel. For example, one board may be provided with only one perforated area and the back surface thereof may be provided with a sound absorbing material. One in which the outer enclosure is fixed, one board is divided into a plurality of perforated area regions, and the sound absorbing material and the outer enclosure are fixed over the entire surface of the board except for the peripheral portion. Good.

[0025]

[Effect of device]

 The present invention has the following effects due to the above structure.

By varying the hole diameters of the sound absorbing holes formed in the perforated area area divided into a plurality of boards of one acoustic control panel, one acoustic control panel can have a multi-range of low sound, middle sound, and high sound. It is possible to provide a functional sound absorption characteristic, and it is possible to provide an acoustic adjustment panel of high commercial value that can flexibly meet various acoustic characteristic requirements in various rooms.

Further, since the sound absorbing material and its surrounding material are fixed only on the back surface of the perforated area area of the board, and the board and the sound absorbing material are integrated into a unit, the acoustic characteristics such as sound absorption coefficient can be produced in the factory. It is possible to provide a precise acoustic adjustment panel with stable performance, easy acoustic adjustment during construction, which can be adjusted and shipped in stages.

Further, since the sound absorbing material on the back surface of the board and the peripheral portion having no surrounding material can be directly fixed to the base material such as the wall, the workability can be greatly improved and the construction period can be shortened. An acoustic adjustment panel that can be achieved can be provided.

Further, when the outer cover material on the back surface of the board is formed of expanded polystyrene, it is easy to reduce the overall weight and cost, and the weight reduction further improves the workability. Also, if the extension protection part is integrally formed on the outer periphery of the outer enclosure, the outer cover material of the styrofoam, which is easily scratched, is protected by the extension protection part, and the product value of the acoustic adjustment panel is prevented from decreasing. The packaging and transportation can be simplified.

[Brief description of drawings]

FIG. 1A is a front view showing an embodiment of the present invention,
FIG. 1B is a bottom view including a partial cross section of the acoustic adjustment panel of FIG.

2A is a rear view including a part of the acoustic adjustment panel shown in FIG. 1, a part of which is omitted, FIG. 2B is an enlarged cross-sectional view taken along line AA of FIG. 2A, and FIG. The expanded sectional view which follows the BB line of (a).

3A is a rear view immediately before construction including a part of the acoustic adjustment panel of FIG. 1 which is omitted, and FIG. 3B is a bottom view including a partial cross section of the acoustic adjustment panel of FIG. 3A.

4 (a) is a front view of the acoustic adjustment panel of FIG. 1 during construction, and FIG. 4 (b) is an enlarged sectional view taken along the line C-C of FIG. 4 (a).

5A is a front view showing another embodiment of the present invention, FIG.
FIG. 5B is a rear view including a part of the acoustic adjustment panel of FIG.

6A is a front view of a conventional acoustic adjustment panel during construction, FIG. 6B is a side view including a partial cross section of the acoustic adjustment panel of FIG. 6A, and FIG. 6C is FIG. 6A. Side view of the sound adjustment panel before installation.

FIG. 7 is a side view including a partial cross section before and after construction of another conventional acoustic adjustment panel.

[Explanation of symbols]

 1 Acoustic adjustment panel 2 Board 3 Sound absorbing hole 3'Large sound absorbing hole 3 '' Small sound absorbing hole M Perforated area area M1 1st perforated area area M2 2nd perforated area area 5 Sound absorbing material 6 Surround Material 6a Extension protection part

Claims (4)

[Scope of utility model registration request] 1. A first perforated area region in which a plurality of acoustic adjustment sound absorbing holes having the same hole diameter are formed, and a plurality of acoustic adjustment sound absorbing holes having a different hole diameter from the sound absorbing holes in the first perforated area region. An acoustic adjustment panel comprising a board whose surface is divided into a plurality of perforated area regions including the formed second perforated area region. 2. A sound absorbing device having a plurality of sound absorbing sound absorbing holes formed in a predetermined perforated area region excluding the peripheral edge portion on the back surface of the perforated area region of the board, the back surface and the end surface of which are surrounded by an envelope material. An acoustic adjustment panel characterized by fixing materials. 3. An acoustic adjustment panel, characterized in that a sound absorbing material having a back surface and an end surface surrounded by an enclosure member is fixed to the back surface of each of the plurality of perforated area regions of the board according to claim 1. 4. The outer envelope is made of styrofoam, and the outer periphery of the outer envelope is integrally provided with an extending protection portion which is connected to the outer periphery so as to be cut and separated by a blade. Sound adjustment panel.