TWI767867B - Sound absorbing panel - Google Patents

Abstract

A sound absorbing panel is provided, including: a foam layer, including a plurality of holes at least partially communicated with one another; and at least one outer layer, disposed on a side of the foam layer, including a plurality of fibers which are interlaced with one another and stacked up with one another in a thickness direction, an outer surface transverse to the thickness direction and at least one cutting surface lateral to the outer surface, the plurality of fibers at least partially crimped and fused with one another on the at least one cutting surface to form at least one rough surface; wherein the outer surface has a first hardness, and each of the at least one rough surface has a second hardness larger than the first hardness.

Description

Sound-absorbing panels

The present invention relates to a sound-absorbing panel.

Common sound-absorbing devices include sound-absorbing cotton, sound-absorbing panels, and bass trap structures. Through the porous structure, sound waves can vibrate in them or rub against the medium, and then convert them into heat energy and dissipate to achieve sound-absorbing effects. Factors such as the material of the sound absorbing device, the density and shape of the porous structure will all affect the sound absorption rate of the sound absorbing device. The sound-absorbing device is mostly in sheet shape, and is directly fixed on the wall by adhesive or nails.

However, the conventional sound-absorbing device has the following disadvantages: in order to be easily fixed on the wall, the thickness of the sound-absorbing device should not be too large, resulting in a limited sound absorption rate; if the sound-absorbing device is to be installed, the operator needs to measure, cut, and fix it. and decoration, etc., the installation steps are complicated and time-consuming and labor-intensive, and the convenience is not good; the structural strength and surface wear resistance of the sound-absorbing device are not good, easy to wear, and the aesthetics is insufficient. In addition, if the installed sound-absorbing device is detached from the wall, it will also cause problems such as residual glue or damage on the wall, which is not conducive to maintenance and replacement.

Therefore, it is necessary to provide a novel and progressive sound-absorbing panel to solve the above-mentioned problems.

The main purpose of the present invention is to provide a sound-absorbing panel with good sound-absorbing effect and durability.

In order to achieve the above object, the present invention provides a sound-absorbing panel, comprising: a foam layer, including a plurality of at least partially connected holes; and at least one outer layer, disposed on one side of the foam layer, including a plurality of interlaced and along a Fibers stacked on each other in the thickness direction, an outer surface transverse to the thickness direction, and at least one tangent surface transverse to the outer surface, the plurality of fibers are at least partially crimped and fused to form at least one rough surface on the at least tangential surface; wherein , the outer surface has a first hardness, and each of the rough surfaces has a second hardness greater than the first hardness.

1,1a: Acoustic panels

10: Foam layer

11: Holes

20,20a: Outer layer

21: Fiber

211: Pore

212: Fusion

22: outer surface

23: Cut Noodles

231: Rough Surface

24: Through hole

25: First outer layer

251: The first through hole

26: Second outer layer

261: Second through hole

27: Card slot

28: Notch

30,30a: Connector

31: Belt body

32: The first connection part

33: Second connecting part

34: The first fastener

35: Second fastener

T: thickness direction

FIG. 1 is a perspective view of a preferred embodiment of the present invention.

FIG. 2 is an exploded view of a preferred embodiment of the present invention.

FIG. 3 is a partial enlarged view of a preferred embodiment of the present invention.

FIG. 4 is an assembly schematic diagram of a preferred embodiment of the present invention.

FIG. 5 is an assembly schematic diagram of another preferred embodiment of the present invention.

The following examples only illustrate possible implementations of the present invention, but are not intended to limit the scope of protection of the present invention, and are described together first.

Please refer to FIGS. 1 to 4 , which show a preferred embodiment of the present invention. The sound-absorbing panel 1 of the present invention includes a foam layer 10 and at least one outer layer 20 .

The foamed layer 10 includes a plurality of at least partially connected holes 11; the at least one outer layer 20 is disposed on one side of the foamed layer 10 and includes a plurality of fibers 21 interlaced and stacked with each other along a thickness direction T, a transverse The outer surface 22 in the thickness direction T and at least one tangential plane 23 transverse to the outer surface 22, the plurality of fibers 21 are at least partially crimped on the at least tangential plane 23 and fused with each other to form at least one rough surface 231, the plurality of fibers 21 The crimped and fused parts form a plurality of fusion parts 212; wherein, the outer surface 22 has a first hardness, and each of the rough surfaces 231 has a second hardness greater than the first hardness, thereby preventing the multiple fusion parts 212 The fibers 21 are dispersed and peeled off from the at least one section surface 23, which is wear-resistant and durable. The gap between the plurality of fibers 21 and the at least one section surface 23 is at least partially closed by the plural number of fusion parts 212, which can prevent sound waves from passing out and has a good sound absorption effect. , and the foam layer 10 and the at least one outer layer 20 can provide a tortuous sound wave transmission path, thereby effectively reducing the sound reverberation effect in the space, and the sound absorption effect is good.

The plurality of holes 11 are open holes or semi-open holes, so as to increase the collision and friction between the incident sound waves and the walls of the plurality of holes 11, and the sound absorption effect is good. The plurality of fibers 21 are surrounded by a plurality of pores 211, and the average porosity of the foam layer 10 is greater than the average porosity of the at least one outer layer 20, whereby the plurality of fibers 21 can rub against most of the incident acoustic waves and consume their energy , the remaining sound wave energy can then enter the foam layer 10 for further consumption and absorption. The foam layer 10 and each of the outer layers 20 are preferably made of different materials, and can be configured with different sound absorption frequency ranges, different sound absorption rates and other performance differences according to the purpose of use, so as to achieve the desired sound absorption effect. In this embodiment, the plurality of fibers 21 are polyurethane fibers, which can effectively reduce the indoor reverberation time, and have the advantages of environmental protection, no formaldehyde, no release of toxic substances, and flame retardancy; the foam layer 10 can be, for example, but not It is limited to foam molding by PE, EVA, PU, rubber and other materials, which is easy to process and low cost. The foamed layer 10 and the at least one outer layer 20 can be attached to each other by applying an adhesive locally to prevent the plurality of holes 11 and the plurality of holes 211 on the surface from being closed. In other embodiments, the material of the foam layer and the at least one outer layer can be the same, for example, the foam layer can also be a polyurethane foam; The plurality of fibers can also be, for example, glass fibers, wood wool, etc.; the adhesive can also be fully coated between the foam layer and the at least one outer layer.

In detail, a thickness of the foam layer 10 is greater than that of the outer layers 20 and not less than 30 mm; the thickness of the foam layer 10 is not less than 3 times the thickness of the outer layer 20, so that the sound absorbing panel 1 Has better sound absorption. An average hardness of each of the outer layers 20 is greater than an average hardness of the foamed layer 10 , whereby the at least one outer layer 20 can provide better wear resistance and can prevent the foamed layer 10 from being worn by external forces. In this embodiment, the at least one outer layer 20 has sufficient rigidity to maintain the overall configuration of the sound-absorbing panel 1 without being arbitrarily flexed, and has good structural strength; in a circumferential direction transverse to the thickness direction T, Each of the outer layers 20 extends and protrudes from the foam layer 10 , which effectively prevents the foam layer 10 from contacting foreign objects and reduces the possibility of being worn. Of course, each of the outer layers can also be flush with the foamed layer in the circumferential direction.

The at least one outer layer 20 includes at least one through hole 24 corresponding to the foam layer 10 , so that part of the incident sound wave can directly enter the foam layer 10 to be transmitted and consumed, and can also provide different sound absorption effects on the same sound wave incident surface The materials (ie the foam layer 10 and the outer layer 20 with different materials) have a wide range of applications; an inner peripheral surface of each through hole 24 is provided with at least one rough surface 231 to prevent the plurality of fibers 21 from peeling off each other , dispersion, and good aesthetics. Further, the at least one outer layer 20 includes a first outer layer 25 and a second outer layer 26 disposed on two opposite sides of the foamed layer 10 , and the first outer layer 25 includes at least one first outer layer 25 corresponding to the foamed layer 10 . A through hole 251, the second outer layer 26 includes at least one second through hole 261 corresponding to the foam layer 10, the at least one first through hole 251 and the at least one second through hole 261 in the thickness direction T at least partially overlap each other. In this embodiment, the first outer layer 25 includes a plurality of the first through holes 251 , the second outer layer 26 includes a plurality of the second through holes 261 corresponding to the plurality of first through holes 251 , and the plurality of first through holes 261 . 251 and the plurality of second through holes 261 are respectively elongated and parallel to each other, whereby the incident sound wave can enter the foam layer 10 from the plurality of first through holes 251 or the plurality of second through holes 261, and pass through the foam layer 10. The plurality of holes 11 are in the first outer layer 25 It is absorbed and consumed by passing back and forth between the second outer layer 26 and the second outer layer 26 . Preferably, at least one rough surface 231 is provided on an inner peripheral surface of each of the first and second through holes 251 , 261 ; at least one of the first through holes 251 and the second through holes 261 is provided. an extension length greater than 1/2 of a radial dimension of at least one of the first outer layer 25 and the second outer layer 26, so that the incident acoustic wave is easily transmitted between the first outer layer 25 and the second outer layer 26; The colors of the foam layer 10 and the outer layers 20 are different, and can be matched with the design of the plurality of first through holes 251 and the plurality of second through holes 261 to make the sound absorbing panel 1 have various appearance changes and aesthetics. good. Of course, the plurality of first through holes and the plurality of second through holes can also be configured in other shapes; the plurality of first through holes and the plurality of second through holes can also be displaced to achieve different sound absorption effects.

The sound absorbing panel 1 further includes at least one connecting piece 30 , the at least one outer layer 20 is provided with at least one clamping slot 27 , and each connecting piece 30 is clamped in one of the clamping slots 27 , so as to be convenient for connecting or fixing a plurality of the sound absorbing boards 1 . on a set surface. Preferably, the plurality of first through holes 251 extend along a length direction, and each of the card slots 27 is provided on the first outer layer 25 and is located on a side of the first through hole 251 transverse to the length direction, so that the The length direction can correspond to the height direction of the set space, which is convenient for configuration. The at least one slot 27 can be disposed only on the first outer layer 25, for example, when the sound absorbing panel 1 is installed, the first outer layer 25 faces the wall, and the second outer layer 26 is exposed outward, which has good aesthetics. In the present embodiment, the connecting member 30 includes a flexible belt 31 that passes through a card slot 27 , a first connecting portion 32 and a second connecting portion 33 . The first connecting portion 32 and The second connecting portions 33 are disposed at opposite ends of the belt body 31 and are releasably connected to each other, and can be combined with a plurality of the sound-absorbing panels 1 in a space, as shown in FIG. 4 , which is convenient. The first connecting portion 32 and the second connecting portion 33 can be assembled together by, for example, but not limited to, magnetic attraction, velcro, snap connection, and the like.

Referring to another preferred embodiment shown in FIG. 5 , the at least one outer layer 20 a is further provided with at least one notch 28 corresponding to the at least one card slot 27 , and each of the notch 28 faces away from a side of the card slot 27 . open. Each of the connecting members 30a includes a first fastener 34 and a second fastener pivotally connected to the first fastener 34 35. The first fastener 34 and the second fastener 35 can be respectively clipped to one of the card slots 27 of the sound absorbing panel 1a to be assembled together with good structural strength. Thereby, the first fastener 34 and the second fastener 35 can be respectively accommodated in one of the gaps 28 at least partially, so that the two adjacent sound-absorbing panels 1a can be in contact with each other and can swing relatively smoothly, reducing the need for Assembly gap, easy to adjust.

1: Sound-absorbing panels

10: Foam layer

20: Outer layer

24: Through hole

30: Connector

Claims (10)

A sound-absorbing panel, comprising: a foamed layer, comprising a plurality of at least partially connected holes; and at least one outer layer, disposed on one side of the foamed layer, comprising a plurality of fibers interlaced and stacked along a thickness direction, a Transverse to the outer surface in the thickness direction and at least one tangent plane transverse to the outer surface, the plurality of fibers are at least partially crimped and fused to each other on the at least sectional plane to form at least one rough surface, and the plurality of fibers are crimped and fused to each other A plurality of fusion parts are formed at the part of the outer surface; wherein, the outer surface has a first hardness, and each of the rough surfaces has a second hardness greater than the first hardness. The sound-absorbing panel according to claim 1, wherein a thickness of the foam layer is greater than a thickness of each of the outer layers and not less than 30 mm. The sound-absorbing panel according to claim 1, wherein the at least one outer layer includes at least one through hole corresponding to the foam layer, and an inner peripheral surface of each through hole is provided with at least one rough surface. The sound-absorbing panel of claim 1, wherein an average hardness of each of the outer layers is greater than an average hardness of the foamed layer. The sound-absorbing panel according to claim 1, wherein the at least one outer layer comprises a first outer layer and a second outer layer disposed on two opposite sides of the foam layer, and the first outer layer comprises at least one outer layer corresponding to the foam layer the first through hole, the second outer layer includes at least one second through hole corresponding to the foam layer, the at least one first through hole and the at least one second through hole at least partially overlap each other in the thickness direction. The sound-absorbing panel of claim 5, wherein the first outer layer includes a plurality of the first through holes, the second outer layer includes a plurality of the second through holes corresponding to the plurality of first through holes, and the plurality of first through holes and the plurality of second through holes respectively extend in a long strip shape and are parallel to each other. The sound-absorbing panel according to claim 1, wherein in a circumferential direction transverse to the thickness direction, each of the outer layers extends and protrudes from the foamed layer. The sound-absorbing panel according to any one of claims 1 to 7, further comprising at least one connector, wherein the at least one outer layer is provided with at least one slot, and each connector is clipped to one of the slots. The sound-absorbing panel according to claim 8, wherein the at least one outer layer is further provided with at least one notch corresponding to the at least one card slot, and each of the notch is open to a side away from one of the card slots. The sound-absorbing panel according to claim 6, wherein a thickness of the foamed layer is greater than a thickness of each of the outer layers and not less than 30 mm; the thickness of the foamed layer is not less than 3 times the thickness of the outer layer; each of the An inner peripheral surface of the first and second through holes is provided with at least one rough surface; an extension length of at least one of each of the first through holes and each of the second through holes is greater than that of the first outer layer and the second through hole 1/2 of a radial dimension of at least one of the outer layers; multiple pores are formed between the plurality of fibers, and the average porosity of the foam layer is greater than the average porosity of the at least one outer layer; the plurality of fibers are polyurethane fibers; The plurality of holes are open holes or semi-open holes; the material of the foam layer and each of the outer layers are different; the color of the foam layer and each of the outer layers is different; an average hardness of each of the outer layers is greater than that of the foam an average hardness of the layer; in a circumferential direction transverse to the thickness direction, each of the outer layers extends and protrudes from the foam layer; the sound-absorbing panel further includes at least one connecting piece, and the at least one outer layer is provided with at least one clamping slot , each of the connecting pieces is clamped in one of the card slots; the plurality of first through holes extend along a length direction, and each of the card slots is arranged on the first outer layer and is located at a side of the first through hole transverse to the length direction one side; and each of the connecting pieces includes a flexible belt body, a first connecting portion and a second connecting portion, which are flexed and pass through the card slot, and the first connecting portion and the second connecting portion are arranged on The opposite ends of the belt body are releasably connected.

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