sound-absorbing panels

Abstract

To provide sound absorption panels that are easy to handle and maintain good sound absorption performance.SOLUTION: A sound absorption panel comprises: an enclosure 10 which is in a hollow shape having a front face part 11 and a back face part 12 facing each other, a top part 13 and a bottom part 14 facing each other, a first side face part 15 and a second side face part 16 facing each other, has a partition plate 30 extending between the top part 13 and the bottom part 14 to divide the hollow shape into multiple sections, and has an opening in the back face part 12; and a sound absorption material 20 which is held inside the enclosure 10. The back face part 12 has a reinforcement part 31 which extends from the partition plate 30 toward the first side face part 15 or the second side face part 16, and the back face part 12 is arranged facing an existing wall.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an acoustical panel. [Background technology]

[0002] BACKGROUND ART Conventionally, a soundproof wall for reducing noise has been proposed in which sound-absorbing material is attached to an existing wall (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 8-85920 Summary of the Invention [Problem to be solved by the invention]

[0004] In the case of attaching sound-absorbing material to an existing wall as described in Patent Document 1, if the sound absorber is made of low-rigidity material such as glass wool, the sound absorber will deform and be difficult to attach, making it difficult to handle. Also, if the sound absorber is exposed to ultraviolet rays, wind, and rain, it may scatter, reducing its sound-absorbing performance.

[0005] Therefore, an object of the present invention is to provide a sound-absorbing panel that is easy to handle and maintains its sound-absorbing performance. [Means for solving the problem]

[0006] The present invention has been made to solve the above problems, and the gist of the present invention is as follows. [1] A sound-absorbing panel having a hollow shape with opposing front and back portions, opposing top and bottom portions, and opposing first and second side portions, and having a partition plate extending between the top and bottom portions and dividing the hollow shape into multiple sections, the sound-absorbing panel comprising: a housing having an opening in the back portion; and sound-absorbing material held inside the housing, the back portion having a reinforcing portion extending from the partition plate toward the first side portion or the second side portion, the sound-absorbing panel being placed directly opposite an existing wall. [2] The sound-absorbing material is a dry material, and the density of the dry material is 16 kg / m 3 More than 64kg / m 3 The sound-absorbing panel according to [1] below. [3] The sound-absorbing material is a wet material, and the density of the wet material is 20 kg / m 3 More than 100kg / m 3 The sound-absorbing panel according to [1] below. [4] The sound-absorbing panel according to any one of [1] to [3], wherein the sound-absorbing material is held inside the housing so that at least a portion of the sound-absorbing material is flush with the back surface. [5] The sound-absorbing panel according to any one of [1] to [4], wherein the sound-absorbing material is covered with either a water-repellent or waterproof cloth or film. [6] The sound-absorbing panel according to any one of [1] to [5], wherein the extending direction of the reinforcing portion is perpendicular to the extending direction of the partition plate. [7] The sound-absorbing panel according to any one of [1] to [6], wherein the reinforcing portion is plural. [8] The sound-absorbing panel according to [7], wherein the plurality of reinforcing portions are arranged symmetrically with respect to the partition plate. [9] The sound-absorbing panel described in any one of [1] to [8], wherein the housing is provided with a fixing jig having a hole, and the fixing member that can be inserted into the hole engages with a fixed member provided on the existing wall, thereby allowing the panel to be installed on the existing wall.

[10] The sound-absorbing panel according to any one of [1] to [9], wherein the thickness of the housing is 10 mm or more and 100 mm or less. [Effects of the Invention]

[0007] According to the present invention, it is possible to provide a sound-absorbing panel that is easy to handle and maintains sound-absorbing performance. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1(a) is a perspective view of a sound-absorbing panel according to an embodiment of the present invention as viewed from the front, and FIG. 1(b) is a perspective view of a sound-absorbing panel according to an embodiment of the present invention as viewed from the back. [Figure 2] 1 is a schematic diagram showing an example of installing a sound-absorbing panel according to an embodiment of the present invention on an existing wall. [Figure 3] 1 is a plan view of a sound-absorbing panel according to an embodiment of the present invention, viewed from the front. [Figure 4] 1 is a plan view of a sound-absorbing panel according to an embodiment of the present invention, viewed from the rear surface thereof. DETAILED DESCRIPTION OF THE INVENTION

[0009] (Embodiment) The present invention will be described in more detail below using embodiments. 1, the sound-absorbing panel 1 according to the embodiment of the present invention has a hollow shape with opposing front and rear portions 11 and 12, opposing top and bottom portions 13 and 14, and opposing first and second side portions 15 and 16, and includes a partition plate 30 extending between the top and bottom portions 13 and 14 to divide the hollow shape into multiple sections, a housing 10 having an opening in the rear portion 12, and sound-absorbing material 20 held inside the housing 10, and the rear portion 12 has a reinforcing portion 31 extending from the partition plate 30 toward the first side portion 15 or the second side portion 16. The sound-absorbing panel 1 according to the embodiment of the present invention is arranged so that the rear portion 12 directly faces an existing wall 50, as shown in FIG.

[0010] (Housing) The shape of the housing 10 is hollow, having opposing front and back portions 11 and 12, opposing top and bottom portions 13 and 14, and opposing first and second side portions 15 and 16. In FIG. 1, it is shown as a rectangular parallelepiped, but is not limited to this and may be a cube, cylinder, regular tetrahedron, or any other shape.

[0011] The housing 10 includes a fixing jig 40 having a hole 41. As shown in FIG. 2 , a fixing member 60 that can be inserted into the hole 41 engages with a fixed member 51 provided on the existing wall 50, thereby installing the sound-absorbing panel 1 on the existing wall 50. The hole 41 may have any shape that allows the fixing member 60 to be inserted therethrough, such as a round hole, a square hole, or an elongated hole. The fixing member 60 may be any member that can be inserted into the hole 41 and engaged with the fixed member 51 to fix the sound-absorbing panel 1 to the existing wall 50, such as a bolt. The fixed member 51 may be any member that can be engaged with the fixing member 60 to fix the sound-absorbing panel 1 to the existing wall 50, such as a nut or a cap nut, with a cap nut being preferred.

[0012] Of the surfaces constituting the housing 10, the surface constituting the front portion 11 (XY plane) is preferably provided with a large number of through holes, and examples thereof include wire mesh and punched metal. The surface constituting the front portion 11 is preferably a perforated plate such as punched metal provided with a large number of through holes, from the viewpoints of improving sound absorption performance and obtaining rigidity and durability. The shape of the through holes may be any of round holes, square holes, elongated holes, etc. By providing a large number of through holes in the surface constituting the front portion 11, more sound from the sound source reaches the sound-absorbing material 20 through the through holes, thereby improving sound absorption performance against noise. The aperture ratio of the through holes on the surface that constitutes front portion 11 is preferably 20% to 70%, more preferably 35% to 65%, and even more preferably 40% to 60%. When the aperture ratio of the through holes on the surface that constitutes front portion 11 is within the above range, the rigidity and durability of housing 10 can be maintained while efficiently absorbing noise from the sound source. The aperture ratio of the through holes on the surface constituting the front portion 11 is the ratio of the area of ​​the through holes to the area of ​​the entire surface including the through holes when the surface constituting the front portion 11 is viewed from above.

[0013] The number of through-hole regions in the surface constituting the front portion 11 where through-holes are provided is not limited to one region, and may be multiple regions. When there are multiple through-hole regions, for example, as shown in FIG. 3, there may be two regions such as through-hole regions A1 and A2, or there may be three or more regions. The multiple through-hole regions may be provided in accordance with the multiple hollow shapes of the housing 10 that are divided by the partition plate 30. Furthermore, the multiple through-hole regions may each have the same area or may each have a different area.

[0014] Of the surfaces that make up the housing 10, the surface (XY plane) that makes up the back surface 12 has an opening. By having an opening on the surface that makes up the back surface 12, the sound-absorbing material 20 is exposed, which allows for weight reduction and cost reduction. Furthermore, although the sound-absorbing material 20 is exposed on the back surface 12, after installation on the existing wall 50, the back surface 12 is hidden, so the sound-absorbing material 20 is not exposed to ultraviolet rays, wind, and rain, and deterioration of the sound-absorbing material 20 can be suppressed. The shape of the opening in the back surface 12 may be rectangular, circular, or the like.

[0015] 1(b) and 4, the rear portion 12 has a reinforcing portion 31 extending from the partition plate 30 toward the first side portion 15 or the second side portion 16. Providing the reinforcing portion 31 on the rear portion 12 can reinforce the strength of the rear portion 12, which has an opening, and can suppress deformation when transporting and installing the sound-absorbing panel 1, improving handleability. Furthermore, providing the reinforcing portion 31 on the rear portion 12 can suppress and hold the sound-absorbing material 20, and can also prevent the sound-absorbing material 20 from protruding from the rear portion 12. The reinforcing material 31 may be any material that fulfills the reinforcing function of the housing 10, and the shape of the reinforcing material 31 and the location of its placement on the housing 10 may vary; for example, a plurality of rod-shaped members may be placed from one end of the back portion 12 (open surface) to the other, forming a space between the reinforcing material 31 and the front portion 11, and filling this space with the sound-absorbing material 20. This not only suppresses and holds the sound-absorbing material 20, but also prevents the installation area of ​​the sound-absorbing material 20 in the surface direction (XY plane) from being narrowed by the reinforcing material 31, which is preferable in terms of sound absorption performance. The extension direction of the reinforcing portions 31 is preferably perpendicular to the extension direction of the partition plate 30, from the viewpoint of effectively reinforcing the strength of the sound-absorbing panel 1. Furthermore, from the viewpoint of effectively reinforcing the strength of the sound-absorbing panel 1, it is preferable that there are multiple reinforcing portions 31. From the viewpoint of evenly distributing the force applied to the sound-absorbing panel 1 and effectively reinforcing the strength of the sound-absorbing panel 1, it is preferable that the multiple reinforcing portions 31 are provided symmetrically with respect to the partition plate 30.

[0016] The thickness T (Z-axis direction) of the housing 10 is preferably 10 mm or more and 100 mm or less, more preferably 15 mm or more and 80 mm or less, and even more preferably 20 mm or more and 70 mm or less. When the thickness T of the housing 10 is within the above range, the housing 10 can have rigidity and durability.

[0017] The height H (Y-axis direction) of the housing 10 is preferably 100 mm or more and 3,000 mm or less, more preferably 150 mm or more and 2,500 mm or less, and even more preferably 200 mm or more and 2,000 mm or less. When the height H of the housing 10 is within the above range, the sound-absorbing panel 1 can be easily handled when transporting and installing it.

[0018] The width W (X-axis direction) of the housing 10 is preferably 100 mm or more and 3,000 mm or less, more preferably 150 mm or more and 2,500 mm or less, and even more preferably 200 mm or more and 2,000 mm or less. When the width W of the housing 10 is within the above range, the sound-absorbing panel 1 can be easily handled when transporting and installing it.

[0019] The housing 10 may be made of a material having rigidity and durability, such as metals such as iron, steel, aluminum, and stainless steel, and resins such as polyethylene, polypropylene, polybutene, and polyvinyl chloride. Specific examples of materials for the housing 10 include highly corrosion-resistant plated steel plates such as Super Dyma Steel Plate (product name) and ZAM Steel Plate (product name), and plated steel plates such as hot-dip galvanized steel plates, from the standpoint of durability, and aluminum plates from the standpoint of weight.

[0020] (sound absorbing material) The sound-absorbing material 20 is held inside the housing 10. When the inside of the housing 10 is filled with the sound-absorbing material 20, the sound-absorbing material 20 absorbs multiple reflections that occur between the existing wall 50 and the sound source, thereby increasing the soundproofing effect.

[0021] The sound-absorbing material 20 is held inside the housing 10 so that at least a portion of it is flush with the back surface 12. Since at least a portion of the sound-absorbing material 20 is flush with the back surface 12, after the sound-absorbing panel 1 is installed on the existing wall 50, the sound-absorbing material 20 comes into direct contact with the existing wall 50, thereby improving the absorption effect.

[0022] The material of the sound-absorbing material 20 is not particularly limited, and examples thereof include dry materials such as fiber materials such as glass wool, rock wool, synthetic fiber, and metal fiber, as well as wet materials such as urethane foam and putty. The material of the sound-absorbing material 20 may be a dry material or a wet material used alone, or a combination of dry and wet materials. Of the dry materials, those that deform when they absorb moisture, such as glass wool, are preferably water-repellent.

[0023] The density of the dry material of the sound absorbing material 20 is 16 kg / m 3 More than 64kg / m 3 It is preferable that the saturation is 20 kg / m or less. 3 More than 48kg / m 3 More preferably, it is 24 kg / m or less. 3 More than 40kg / m 3It is more preferable that the density of the dry material of the sound-absorbing material 20 is within the above range, so that both sound-absorbing performance and weight reduction of the sound-absorbing panel can be achieved.

[0024] The density of the wet material of the sound absorbing material 20 is 20 kg / m 3 More than 100kg / m 3 It is preferable that the density is 25 kg / m or less. 3 More than 80kg / m 3 More preferably, it is 30 kg / m or less. 3 More than 60kg / m 3 It is more preferable that the density of the wet material of the sound-absorbing material 20 is within the above range, so that both sound-absorbing performance and weight reduction of the sound-absorbing panel can be achieved.

[0025] The sound-absorbing material 20 is preferably covered with either a water-repellent or waterproof cloth or film. Covering the sound-absorbing material 20 with either a water-repellent or waterproof cloth or film can impart water-repellent or waterproof properties to the sound-absorbing material 20, preventing deformation due to moisture absorption and improving durability. Furthermore, covering the sound-absorbing material 20 can prevent the sound-absorbing material 20 from scattering and makes it easier to control the density, thickness, etc. of the sound-absorbing material 20. The glass cloth is not particularly limited, but it is preferable that the mesh density and thickness are in the range of EP12D equivalent to EP18B equivalent (JIS R 3414:2012) in order to balance performance and shatterproofing ability.

[0026] According to the sound-absorbing panel of the present invention, the sound-absorbing performance of the sound-absorbing material can be well maintained, and deformation during transportation and installation can be suppressed, making it easy to handle.

[0027] (Other embodiments) In the above embodiment, the sound-absorbing panel 1 is fixed to the existing wall 50 using the fixing jig 40 and the fixing member 51, but this is not limited to this, and the fixing jig 40 and the fixing member 51 may be omitted by adopting other fixing means such as adhesive.

[0028] Furthermore, in the above embodiment, the sound-absorbing panel 1 is fixed to the existing wall 50 using the fixing jig 40 and the fixed member 51, and the fixing member 60 is inserted into the hole 41 of the fixing jig 40 and fitted into the fixed member 51. However, this is not limited to this, and the fixed member 51 may be inserted into the hole 41 of the fixing jig 40 and fitted into the fixing member 60. In this embodiment, the fixed member 51 may be an anchor bolt or the like, and the fixing member 60 may be a nut or the like. [Explanation of symbols]

[0029] 1. Sound-absorbing panels 10. Cabinet 11 Front 12 Back part 13 Heaven 14 Bottom 15 First side part 16 Second side part 20 Sound-absorbing material 30 Divider 31 Reinforcement 40 Fixture 41 Hole 50 Existing wall 51 Fixed member 60 Fixing member

Claims

1. a housing having a hollow shape with opposing front and rear portions, opposing top and bottom portions, and opposing first and second side portions, the housing having a partition plate extending between the top and bottom portions and dividing the hollow shape into a plurality of sections, and an opening in the rear portion; a sound-absorbing material held inside the housing; the rear surface portion has a reinforcing portion extending from the partition plate toward the first side surface portion or the second side surface portion, The rear portion is placed directly opposite the existing wall, The sound-absorbing panel is held inside the housing so that at least a portion of the sound-absorbing material is flush with the rear surface.

2. An acoustic panel as described in claim 1, wherein the acoustic material is held inside the housing so that at least a portion of it is flush with the rear portion and the flush portion is in direct contact with the existing wall.

3. An acoustic panel as described in claim 1 or 2, wherein the reinforcing portion suppresses and holds the acoustic material.

4. The sound absorbing material is a dry material, and the density of the dry material is 16 kg / m ３ More than 64kg / m ３ The sound-absorbing panel according to any one of claims 1 to 3, wherein:

5. The sound absorbing material is a wet material, and the density of the wet material is 20 kg / m ３ More than 100kg / m ３ The sound-absorbing panel according to any one of claims 1 to 3, wherein:

6. 6. The sound-absorbing panel according to claim 1, wherein the sound-absorbing material is covered with either a water-repellent or waterproof cloth or film.

7. The sound-absorbing panel according to any one of claims 1 to 6, wherein the extending direction of the reinforcing portion is perpendicular to the extending direction of the partition plate.

8. The sound-absorbing panel according to any one of claims 1 to 7, wherein the reinforcing portion is a plurality of reinforcing portions.

9. The sound-absorbing panel according to claim 8 , wherein the plurality of reinforcing portions are provided symmetrically with respect to the partition plate.

10. the housing includes a fixing jig having a hole; The sound-absorbing panel according to any one of claims 1 to 9, wherein the sound-absorbing panel is installed on the existing wall by fitting a fixing member that can be inserted through the hole portion into a fixing member provided on the existing wall.

11. The sound-absorbing panel according to any one of claims 1 to 10, wherein the housing has a thickness of 10 mm or more and 100 mm or less.

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