JP4844935B2 - Sound absorption panel - Google Patents

Description

  The present invention relates to a sound-absorbing panel, and mainly relates to a sound-absorbing panel that is used by being placed on a floor such as an indoor meeting space. However, the application is not limited to this.

Roads etc., sound insulation and noise caused by running of the vehicle, as soundproofing device for sound absorption, sound insulation plates and sound absorbing plate absorbing-translucent sound barrier using (Patent Document 1), a thin acoustic panel (Patent Document 2) Has been proposed. Further, a simple sound insulation partition for a room to be used by suspending the sound absorbing layer and the sound insulating layer in a comb shape has been proposed (Patent Document 3).
Japanese Patent No. 399656 Japanese Patent No. 3833036 JP 2004-285695 A

  In the conventional technology, a soundproof wall (sound absorbing wall) used outdoors such as on a road has to be made of a strong structure and a material / structure that takes into account the effects of dust, dirt, and rainwater.

  In addition, in the interdigital sound insulation partition, an air layer cannot be interposed between the sound absorption layer and the sound insulation layer, an effective sound absorption effect cannot be obtained, and the interdigital structure is interdigital and not easy to handle. It was inferior in scalability according to space.

  However, the present invention solves the above problems by forming a sound absorbing base material from a sound insulating plate and a sound absorbing plate at predetermined intervals, attaching a frame to the periphery, and stretching the decorative cloth so as to cover the outer surface. .

That is, the present invention is a sound-absorbing panel configured as follows.
(1) used on the floor of the room, or a sound-absorbing base material for sound-absorbing panel used hanging from the ceiling of the room, the combined air layer thickness L of the sound insulation plate and sound absorbing plate, the A sound absorbing substrate was formed.
(2) A frame was attached around the sound-absorbing substrate so that the distance between the sound-insulating plate and the sound-absorbing plate could be maintained.
The frame is formed in a rectangular frame shape by assembling crosspieces, and the sound absorbing material is fixed to one surface of the frame, and the sound insulating material is fixed to the other surface.
The frame has an outer peripheral side fixed to a vertical and horizontal stiles, and an outer peripheral side of the frame is inserted into a recess of the vertical and horizontal stiles, and constitutes a strip that constitutes the outer peripheral surface of the frame and the recesses A gap was formed between them.
(3) The decorative cloth made of fiber was stretched in contact with both the outer surfaces of the sound absorbing base material so as to cover the outer surface of the sound insulating plate and the outer surface of the sound absorbing plate. The decorative cloth was wound and fixed from the outer peripheral side to the outer peripheral surface of the frame.
(4) The sound-absorbing plate is a felt molded product and is composed of a hard fiber plate having a surface weight of 0.5 to 1.0 kg / m ² and an air flow resistance value of 1000 to 4000 N · s / m ³ .
(5) The sound insulating plate is integrally formed by interposing a wave-like intermediate member so as to include an air layer between two surface plates spaced by a predetermined interval.

In the present invention, since the sound insulating plate and the sound absorbing plate are arranged in parallel at a predetermined distance and a frame is attached as a sound absorbing base material, the air layer is maintained and the sound insulating action and the sound absorbing action are simultaneously formed. , together with the damping effect of the air layer, it can exhibit efficient sound-absorbing partition effect. Furthermore, since the fiber decorative cloth is stretched so as to cover both outer surfaces of the sound-absorbing base material, depending on the function of the decorative cloth, various actions such as dust adsorbing action and sound absorbing action are added, A sound absorbing partition with various functions can be configured.

(1) The sound-absorbing plate 1 and the sound-insulating plate 3 are combined with an air layer 8 having a thickness L to form a sound-absorbing substrate 10, and the outer peripheral side of the sound-absorbing substrate 10 is fixed with a frame 16 composed of wooden crosspieces 15 and 15. The distance L between the sound absorbing plate 1 and the sound insulating plate 3 is maintained. The fibrous decorative fabrics 13 and 13 are stretched in contact with the outer surfaces 11 and 11 of the sound-absorbing base material 10 (that is, the outer surface of the sound-absorbing plate 1 and the outer surface of the sound-insulating plate 3) so as to cover both outer surfaces. The sound absorbing substrate 10 is positioned on the inner peripheral side 18 of the frame 16 and the mounting material according to the application is attached to the outer peripheral side 18a of the frame 16 to constitute the sound absorbing panel 30 of the present invention (FIGS. 1 and 2). (A) (b)). As the mounting material, for example, vertical and horizontal stiles 20, 21 cover the outer peripheral side 18a of the frame 16, and the lower ends of the vertical stiles 20, 20, or the lower horizontal stiles 21, and the legs 28, 28 with casters at the lower ends. (FIG. 1).

(2) The material of the sound absorbing plate 1 is arbitrary as long as it has sound absorbing performance. For example, a material containing PET (polyethylene terephthalate) resin fibers and vinyl chloride fibers is heated and compressed to form a hard felt shape. Configure. The material of the sound insulating plate 3 is arbitrary as long as it has sound insulating performance. For example, the sound insulating plate 3 is made of a synthetic resin material integrally formed by sandwiching the corrugated intermediate material 5 between the surface materials 4 and 4 (FIG. 2 (c). The decorative cloth 13 is formed of a material that allows air to pass through, that is, the sound reaches the outer surfaces of the sound absorbing plate 1 and the sound insulating plate 3, and is made of, for example, a cloth for a curtain.

  Embodiments of the present invention will be described with reference to the drawings.

1. Structure of sound absorbing panel 30

(1) Sound absorbing plate 1
The sound absorbing plate 1 is formed by compressing a material containing PET (polyethylene terephthalate) resin fibers and vinyl chloride fibers to form a felt shape.
This material was formed with a thickness of 5 mm, and the normal incident sound absorption coefficient measurement (23 frequencies) based on JIS A 1405-1 was performed under the following conditions.
・ Thickness of sound absorbing plate 5mm
・ A pipe: Cylindrical or disk type with a diameter of 91.6 mm ・ B pipe: Cylindrical type or disk type with a diameter of 40.0 mm ・ Back air layer of 100 mm for both A pipe and B pipe
・ The inside diameter of the acoustic tube A is 91.6 mm and the inside diameter of the acoustic B tube is 40.0 mm.
Microphone Type: Probe tube microphone sound Type: Multi-sine wave test results are shown in the following Table, is shown in Figure 3 a graph of.

Moreover, the sound-absorbing plate 1 can also use the material manufactured as follows, for example. Recycled fiber raw material consisting of natural fiber and chemical fiber is defibrated, and as a binder resin, PET resin fiber is mixed with this to make an original fabric. A fiber hard plate having a surface weight of 0.5 to 1.0 kg / m ² and an air flow resistance value of 1000 to 4000 N · s / m ³ is formed, and the sound absorbing plate 1 is configured from the fiber hard plate.

(2) Sound insulation board 3
Further, the sound insulating plate 3 is formed by disposing the surface materials 4 and 4 at a predetermined interval and interposing the corrugated intermediate material 5 between the surface materials 4 and 4. Such surface material 4, intermediate material 5, and surface material 4 are integrally formed of polypropylene resin or the like. Thereby, since the gaps 6 and 6 exist between the surface materials 4 and 4 and air can be contained, some elasticity is also provided between the surface materials 4 and 4.

(3) Decorative cloth 13
The decorative cloth 13 is made of, for example, a woven fabric of fibers, and it is necessary to form a through hole through which air passes between the fibers on the surface. Since an arbitrary pattern can be formed, it can be appropriately selected and used according to the preference of the installation space.

(4) The wooden crosspieces 15 and 15 are assembled to form a vertically long rectangular frame 16. On one surface 17 of the frame 16, the sound absorbing plate 1 is stretched and fixed to the inner peripheral side 18, and the sound insulating plate 3 is fixed to the inner peripheral side 18 by the other surface 17a. The sound-absorbing plate 1 and the sound-insulating plate 3 are fixed with a gap corresponding to the thickness L of the frame 16 (the wooden crosspiece 15). That is, the sound absorbing plate 1 and the sound insulating plate 3 are arranged with the air layer 8 having a thickness L interposed therebetween. For example, the configuration is as follows.
-Thickness of sound absorbing plate 1 5mm
・ Thickness of sound insulation board 3 5mm
・ Air layer 8 thickness L 22 mm
The sound absorbing plate 1, the sound insulating plate 3, and the air layer 8 having a thickness L are combined to form a sound absorbing base material 10. In addition, the thickness of the sound absorbing plate 1, the sound insulating plate 3, and the air layer 8 is appropriately selected and used according to the application.

(5) The decorative cloth 13 is stretched on one outer surface 11 (the outer surface side of the sound absorbing plate 1) of the sound absorbing substrate 10 and on the other outer surface 11a of the sound absorbing substrate 10 (the outer surface side of the sound insulating plate 3). Decorative fabric 13, the outer surface 11,11a of sound-absorbing base material 10 if covers (sound absorbing plate 1, the outer surface of the sound insulating plate 3), whether that is fixed with an adhesive is not an essential condition. The decorative cloths 13 and 13 on both sides may be the same or different.
The decorative cloths 13 and 13 are wound from the outer peripheral side 18a of the frame 16 to the outer peripheral surface of the frame, and the edge portions 14 and 14 of the decorative cloths 13 and 13 on both sides are overlapped on the outer peripheral surface of the frame 16. Staplers (tuckers) 34, 34 are driven in and fixed (FIGS. 2A and 2B).

(6) The vertical stiles 20, 20 and the horizontal stiles 21, 21 are fixed to the outer peripheral side 18a of the frame 16, respectively. Both stiles 20 and 21 are made of an aluminum alloy and have a surface subjected to an oxide film treatment (alumite treatment). Further, the cross-sectional shape is an H-shape in which the closed sides of the two groove-shaped members (channel materials) 22 and 22 are connected by a band member 23, and the band member 23 is arranged close to one side of the groove member. Protrusions 24 and 24 facing inward are formed on one side ends of the members 22 and 22, respectively. The groove-shaped members 22 and 22 and the band member 23 form a first recess 25 (depth is shallow) on one side (projection side) and a second recess 26 (depth is deep) on the other side.

  The two stiles 20 and 21 are fitted with the outer peripheral side 18b of the frame 16 in the second recess 26 with the first recess 25 on one side facing outward and the second recess 26 on the other side facing inward. Further, screws 35 and 35 are driven from the through holes of the strips 23 of the two stiles 20 and 21 toward the outer peripheral surface of the frame, and the stiles 20 and 21 and the frame 16 are fixed. At this time, it is desirable that a gap be formed between the outer peripheral surface of the frame 16 and the band member 23 (FIGS. 2A and 2B).

(7) At the lower end portions of both vertical stiles 20, 20, a leg portion 28 having a caster at the lower end is attached.

(8) The horizontal coupling magnets 32 and 32 are attached to the intermediate positions (for example, two places) of the first recesses 25 of the vertical stiles 20 and 20, and the magnets (connection means) 32 and 32 are connected by the first recess 25. A shock-absorbing elastic material (for example, packing made of vinyl chloride) is attached. Further, a hood cap (for example, made of polypropylene) is attached to the upper end of the vertical hood 20 to cover the edge. Moreover, packing is put in the upper edge of the horizontal stile, that is, the first recess (facing upward) 25 to close the first recess 25.

(9) The sound absorbing panel 30 is configured as described above.

2. Use of sound absorbing panel 30

(1) The sound absorption characteristics of the sound absorbing panel 30 were evaluated. The sound absorption rate was measured by emitting sound from a sound source of a predetermined frequency from the sound absorbing plate 1 side and the sound insulating plate 3 side of the sound absorbing panel 30 and measuring the reflected sound (FIG. 4 ). In particular, a high sound absorbing effect can be obtained on the sound absorbing plate 1 side in a disturbing high frequency region. In FIG. 4 , the “relaxation partition” compared is a partition in which a cloth folded in a pleat shape is stretched in the frame of a metal pipe, and the “concrete wall” is ordinary concrete.

(2) The sound absorbing panel 30 is formed with a length of about 1800 mm and a width of about 700 mm, for example, in a hospital examination room, a hospital room, a waiting room, a conversation space, a meeting space in an office, and a boundary such as an adjacent table or bed Install and use. It can also be used at evacuation centers such as gymnasiums in the event of a disaster. With this sound absorbing panel 30, an effective sound absorbing effect can be obtained without the height from the ceiling to the floor or with a relatively thin thickness.
At this time, since the acoustic characteristics are different between the sound absorbing plate 1 side and the sound insulating plate 3 side, they can be used properly according to the place of use. For example, when used in a hospital room, it is effective to use the sound absorbing plate 1 facing the bed side of a relatively noisy viewer (a viewer who tends to emit noise).
At this time, since the caster is provided, the use position can be changed. For example, the necessary positions can be collected and the magnets 32 and 32 vertical stiles 20 and 20 can be connected and used (FIG. 1). (A) (b), chain line illustration 30).
If the office work space of the office is separated from a copier, printer, fax machine, server, etc. that emits machine noise, the sound absorption plate 1 side of the equipment machine is surrounded and the surroundings are not sealed. A high sound absorption effect was obtained. Moreover, if it was arranged around a working machine such as a press machine, a high sound absorbing effect was obtained. Moreover, if it is placed in a play space such as a nursery school, it can effectively absorb high voices such as cheers from children.

(3) Moreover, since the decorative cloths 13 and 13 have fibers containing air and also have gaps between the fibers, the decorative cloths 13 and 13 serve as an air filter, and when only dirty, the decorative cloths 13 and 13 are used. It can be replaced and replaced. In addition, the decorative cloth 13 selected according to preference can be used according to the place of use. Further, if the decorative cloth 13 made of a material having a sound absorbing effect such as a material that is thick to some extent is selected (particularly on the sound insulating plate 3 side), a sound absorbing effect can be further added.

3. Other examples

(2) Moreover, in the said Example, the structure of the vertical and horizontal stiles 20 and 21 is arbitrary, and it can employ | adopt by changing suitably according to use conditions, such as the type put up to some extent from a floor, the type suspended from a ceiling (illustration). Not)
Further, if the vertical and horizontal stiles 20, 21 are changed, the present invention can be applied to a movable partition and a movable partition (not shown). Also. It is also possible to form an opening or a recess in a normal movable partition or a movable partition considering normal sound insulation performance, and to fix the sound absorbing panel 30 in the opening or the recess (not shown).

(3) Moreover, in the said Example, although the felt-shaped material was used as the sound-absorbing plate 1, the sound-absorbing plate 1 can also be comprised from an aluminum nonwoven fabric (not shown).

(4) Moreover, in the said Example, although the decorative cloth 13 stretched one sheet | seat on both surfaces of the sound-absorbing base material 10, two sheets or more can also be stretched | stretched. In this case, for example, the surface side (outer surface side) can be made of a highly decorative material (not shown) by using a cloth made of a material having high functionality such as a filter or sound absorption.

In an embodiment of the present invention, (a) is a plan view, (b) is a front view, and (c) is a side view. (A) is the partially expanded sectional view in the AA line of FIG.1 (b), (b) is the partially expanded sectional view in the same BB line, (c) is an expanded sectional view of a sound-insulating board. It is the graph which measured the effect of the sound-absorbing board . It is the graph which measured the effect of the sound absorption panel .

Explanation of symbols

1 Sound absorbing plate 3 Sound insulating plate 4 Surface plate (sound insulating plate)
5 Intermediate material (sound insulation board)
6 Gap (sound insulation board)
8 Air Layer 10 Sound Absorbing Base Material 11 One Side of Sound Absorbing Base Material 11a Other Side of Sound Absorbing Base Material 13 Decorative Cloth 14 Edge of Decorative Cloth 15 Wooden Crosspiece 16 Frame 17 One Side of Frame 17a Other Side of Frame 18 Inner Side of Frame Side 18a Frame outer peripheral side 20 Vertical stile 21 Horizontal stile 22 Groove shape (stile)
23 Band (Kamachi)
24 protrusions
25 First recess
26 Second recess
28 Leg 29 Stile cap 30 Sound absorbing panel 32 Magnet (connecting means)
33 Elastic member 34 Stapler 35 Screw

Claims (1)

A sound-absorbing panel configured as follows.
(1) used on the floor of the room, or a sound-absorbing base material for sound-absorbing panel used hanging from the ceiling of the room, the combined air layer thickness L of the sound insulation plate and sound absorbing plate, the A sound absorbing substrate was formed.
(2) A frame was attached around the sound-absorbing substrate so that the distance between the sound-insulating plate and the sound-absorbing plate could be maintained.
The frame is formed in a rectangular frame shape by assembling crosspieces, and the sound absorbing material is fixed to one surface of the frame, and the sound insulating material is fixed to the other surface.
The frame has an outer peripheral side fixed to a vertical and horizontal stiles, and an outer peripheral side of the frame is inserted into a recess of the vertical and horizontal stiles, and constitutes a strip that constitutes the outer peripheral surface of the frame and the recesses A gap was formed between them.
(3) The decorative cloth made of fiber was stretched in contact with both the outer surfaces of the sound absorbing base material so as to cover the outer surface of the sound insulating plate and the outer surface of the sound absorbing plate. The decorative cloth was wound and fixed from the outer peripheral side to the outer peripheral surface of the frame.
(4) The sound-absorbing plate is a felt molded product and is composed of a hard fiber plate having a surface weight of 0.5 to 1.0 kg / m ² and an air flow resistance value of 1000 to 4000 N · s / m ³ .
(5) The sound insulating plate is integrally formed by interposing a wave-like intermediate member so as to include an air layer between two surface plates spaced by a predetermined interval.

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