JP2024038722A - sound absorbing panel - Google Patents

Abstract

[Problem] To provide a sound-absorbing panel with excellent design freedom for achieving weight reduction while maintaining a certain level of rigidity. [Solution] A sound-absorbing panel P includes a plate-shaped sound-absorbing body A, which is configured with a sound-absorbing body main body H that is a plate-shaped phenolic resin foam and a protective cover material J made of fabric (needle fabric) attached to the front side of the sound-absorbing body main body H, and a cover body B that is formed of a plastic hollow plate S and covers the outer surface of the plate-shaped sound-absorbing body A, in which the cover body B includes a front cover wall 11 that covers the front surface of the plate-shaped sound-absorbing body A and has a plurality of communication holes h for exposing part of the surface of the plate-shaped sound-absorbing body A to the outside, a back cover wall 21 that covers the back surface of the plate-shaped sound-absorbing body A, and a peripheral cover wall E that covers the outer peripheral end surface located between the front and back surfaces of the plate-shaped sound-absorbing body A. [Selected Figure] Figure 5

Description

The present invention relates to a sound-absorbing panel.

Conventionally, various sound absorbing panels have been developed in order to suppress the occurrence of reverberation or noise in a room (see, for example, Patent Document 1).

Conventional sound-absorbing panels have a sound-absorbing body inside that performs the main sound-absorbing function, and the outer surface of the panel is partially covered with a metal plate such as aluminum to maintain its overall shape. There are also those that did.

However, such sound-absorbing panels tend to be heavy, and the degree of freedom in design for reducing weight while maintaining a certain level of rigidity is extremely low.

JP2016-009020A

The present invention has been made in view of the above-mentioned circumstances, and it is an object of the present invention to provide a sound absorbing panel that has excellent flexibility in design for reducing weight while maintaining at least a certain level of rigidity.

That is, the present invention has the following configuration.

The invention according to claim 1 includes a plate-shaped sound absorber mainly composed of a plate-shaped phenolic resin foam, and a hollow plastic plate that covers the outer surface of the plate-shaped sound absorber. A sound absorbing panel comprising a cover body, the cover body covering the surface of the plate-shaped sound absorbing body and one or more communication holes for exposing a part of the surface of the plate-shaped sound absorbing body to the outside. , a back cover wall that covers the back surface of the plate-like sound absorber, and a peripheral cover wall that covers an outer peripheral end surface located between the front surface and the back surface of the plate-like sound absorber. It is a sound absorbing panel.

The invention according to claim 2 is the sound absorbing panel according to claim 1, wherein the plate-like sound absorber is formed in a substantially rectangular plate shape.

The invention according to claim 3 provides a cap sheet in which the plastic hollow plate has a plurality of protrusions for forming air bubbles, and a plurality of protrusions attached to the open side of the protrusions in the cap sheet and corresponding to each of the protrusions. 3. The sound absorbing panel according to claim 2, comprising a back sheet forming air bubbles and a liner sheet attached to the tip side of the protrusion of the cap sheet.

In the invention according to claim 4, the cover body is formed by combining a first cover body component and a second cover body component that is separate from the first cover body component. 4. The sound absorbing panel according to claim 3, wherein the sound absorbing panel is made of:

In the invention according to claim 5, the first cover body component includes the front cover wall, and extends rearward from a peripheral edge of the front cover wall substantially perpendicularly to the front cover wall. and an outer layer peripheral cover wall constituting an outer layer portion of the cover wall, and the second cover body component extends from the back cover wall and the peripheral edge of the back cover wall to the back cover wall. and an inner circumferential cover wall extending substantially perpendicularly to the front and constituting an inner layer part of the circumferential cover wall, and the outer circumferential cover wall and the inner circumferential cover wall are connected by a connecting means. 5. The sound absorbing panel according to claim 4, wherein the sound absorbing panel is connected.

The invention according to claim 6 is the sound absorbing panel according to claim 5, wherein the plate-like sound absorber is attached to at least an inner surface of the back cover wall and an inner surface of the front cover wall. It is.

The invention according to claim 7 is the sound absorbing panel according to claim 1, which can be fixed to an upright wall constituting a building or a fixture via a wall fixture.

In the invention according to claim 8, the plate-like sound absorber includes a sound absorber main body which is the phenolic resin foam, and a protective cover material made of fabric attached to the surface side of the sound absorber main body. The sound absorbing panel according to claim 1.

As explained above, according to the present invention, it is possible to provide a sound absorbing panel with excellent design freedom for reducing weight while maintaining at least a certain level of rigidity.

FIG. 1 is a perspective view showing an embodiment of the present invention. The perspective view in the same embodiment. The front view in the same embodiment. FIG. 4 is a sectional view taken along the line XX in FIG. 3. FIG. 3 is an exploded perspective view of the same embodiment. FIG. 3 is a perspective view showing an example of use of the embodiment.

An embodiment of the present invention will be described below with reference to FIGS. 1 to 6.

In this embodiment, the present invention is applied to a sound absorbing panel P that has a certain degree of rigidity and is excellent in weight reduction.

The sound-absorbing panel P is configured so that it can be fixed, for example, to an upright wall W forming a fixture F (booth) as shown in FIG. ing.

The sound-absorbing panel P is formed by a plate-shaped sound absorber A mainly composed of a plate-shaped phenolic resin foam and a plastic hollow plate S, and is a cover body that covers the outer surface of the plate-shaped sound absorber A. B.

Each configuration of the sound absorbing panel P will be described in detail below.

<Plate sound absorber A>
The plate-shaped sound absorber A includes a sound absorber main body H made of phenolic resin foam, and a protective cover material J made of fabric (needle fabric) attached to the surface side of the sound absorber main body H.

The sound absorbing body H is a phenolic resin foam formed into a rectangular plate shape. More specifically, the sound absorbing body H of this embodiment is made of Calmoform (registered trademark) manufactured by Matsumura Aqua Co., Ltd.

The sound absorber body H has a square shape when viewed from the front, with the vertical and horizontal dimensions set within the range of 40 to 50 cm. In this embodiment, the vertical and horizontal dimensions of the sound absorber body H are set to 427 mm, and the front-to-back dimension (thickness dimension) is set to 16.5 mm.

The sound absorbing body H can exhibit sound absorbing properties, sound insulating properties, and heat insulating properties based on the material properties of the phenolic resin foam. It should be noted that the sound absorbing body H has a material characteristic in that it is easily dented when an impact is applied to its surface, and does not restore its shape once dented. Further, the sound absorbing body H is likely to generate powder and scatter easily. Since the sound absorbing body H has a pH value of 2.5 to ±0.5, it is acidic and tends to rust when it comes into contact with metal.

Since the sound absorbing body H has the above-mentioned physical properties, in cooperation with the other configurations of the sound absorbing panel P, measures have been taken to improve ease of handling.

The protective cover material J is affixed to the surface side of the sound absorbing body H using an adhesive. The protective cover material J is made of cloth material (needle cloth). The protective cover material J is interposed between the front cover wall 11 constituting the cover body B and the sound absorbing body H. Therefore, the sound absorbing body H is not directly exposed to the outside through the communication hole h of the front cover wall 11, and the sound absorbing body H is unlikely to be damaged or dented due to contact with fingers, etc. It becomes.

The protective cover material J has a square shape when viewed from the front, and its vertical and horizontal dimensions are set to a size that can cover substantially the entire front surface of the sound absorbing body H.

In this embodiment, the protective cover material J has a vertical dimension and a horizontal dimension of 420 mm, and a front-back dimension (thickness dimension) of 3.0 mm.

<Cover body B>
The cover body B includes a front cover wall 11 provided with a plurality of communication holes h for covering the surface of the plate-shaped sound absorber A and exposing a part of the surface of the plate-shaped sound absorber A to the outside; It is provided with a back cover wall 21 that covers the back surface of the sound absorber A, and a circumferential cover wall E that covers the outer peripheral end surface located between the front surface and the back surface of the plate-shaped sound absorber A.

The cover body B is formed of a plastic hollow plate S.

As shown in FIG. 4, the plastic hollow plate S includes a cap sheet s1 having a plurality of protrusions t for forming air bubbles (air chambers), and a plastic hollow plate S attached to the open side of the protrusions t in the cap sheet s1. This embodiment includes a back sheet s2 that cooperates with s1 to form a plurality of bubbles corresponding to each protrusion t, and a liner sheet s3 attached to the tip side of the protrusion t of the cap sheet s1. The cover body B includes a first cover component 1 including a front cover wall 11 and a separate body from the first cover component 1, and includes a back cover wall 21. It is formed by combining the second cover body component 2.

The first cover body component 1 extends from the peripheral edge of the front cover wall 11 to the rear, substantially perpendicular to the front cover wall 11, and constitutes an outer layer of the peripheral cover wall E. The outer circumferential cover wall portion 12 is provided.

Note that the first cover component 1 in this embodiment is made of a plastic hollow plate S having a thickness of 5.5 mm.

The second cover component 2 extends from the peripheral edge of the back cover wall 21 to the front substantially orthogonal to the back cover wall 21, and constitutes an inner layer in the peripheral cover wall E. It is provided with an inner layer circumferential cover wall portion 22.

Note that the second cover component 2 in this embodiment is made of a plastic hollow plate S having a thickness of 5.0 mm.

The first cover body component 1 and the second cover body component 2 are maintained in a mutually assembled state by a fastener R serving as a connecting means, an adhesive, or heat welding. It has become.

In addition, the fastening tool R is interposed between the first cover body component 1 and the second cover body component 2 to connect the first and second cover body components 1 and 2 to each other. Any material can be used as long as it can be combined, such as a screw-type anchor member, a rivet (including a one-push type rivet), a screw, a staple, a tacker, and the like.

Specifically, the outer layer peripheral cover wall component 12 provided on the first cover body component 1 and the inner layer peripheral cover wall component 22 provided on the second cover body component 2 are fixedly attached. They are connected by a screw type anchor member which is a tool R.

The plate-shaped sound absorber A disposed inside the cover body B can be attached to the inner surface of the back cover wall 21, the inner surface of the inner circumferential cover wall 22, and the inner surface of the front cover wall 11. ing.

The sound absorbing panel P in the embodiment described above has a vertical dimension set to 450 mm, a horizontal dimension set to 450 mm, and a front-back dimension set to 30 mm. Further, the open area ratio of the front cover wall 11 provided with the communication holes h is set to 20%. According to the measurement results using the measurement method based on the JIS A 1405 standard, the sound absorption panel P of this embodiment has a peak sound absorption characteristic in the range of 500 to 630 Hz, and the sound absorption coefficient in that peak range is approximately 0.8. It has become.

In other words, the sound-absorbing panel P of this embodiment can suitably absorb low-frequency sounds among the high-frequency sounds (approximately 250 to 2000 Hz) that can be generated by human conversation.

Therefore, the sound-absorbing panel P can be installed, for example, on the inner surface of a standing wall W in an office fixture F (booth) as illustrated in FIG. 6, or on the inner surface of a standing wall W in a building such as a general house. Therefore, it is possible to suitably perform the intended function.

As explained above, the sound absorbing panel P according to the present embodiment is formed of a plate-shaped sound absorbing body A mainly composed of a plate-shaped phenolic resin foam and a plastic hollow plate S. It is provided with a cover body B that covers the outer surface of the plate-shaped sound absorber A.

and a front cover wall 11 in which the cover body B covers the surface of the plate-like sound absorber A and is provided with a plurality of communication holes h for exposing a part of the surface of the plate-like sound absorber A to the outside; It includes a back cover wall 21 that covers the back surface of the plate-shaped sound absorber A, and a circumferential cover wall E that covers the outer peripheral end surface located between the front surface and the back surface of the plate-shaped sound absorber A.

Therefore, with this embodiment, it is possible to provide a sound absorbing panel P with excellent design freedom for reducing weight while maintaining a certain level of rigidity.

That is, since the cover body B is formed of the plastic hollow plate S, it can exhibit excellent rigidity despite being lightweight. Further, since the cover body B covers the outer surface of the plate-shaped sound absorbing body A mainly composed of phenolic resin foam, the plate-shaped sound absorbing body A can be suitably protected.

The plate-shaped sound absorber A is formed into a substantially rectangular plate shape.

Therefore, the sound absorbing panel P having a rectangular plate shape can be suitably formed. If the sound absorbing panel P has a rectangular plate shape, it is easy to arrange a plurality of sound absorbing panels P having the same shape next to each other during use.

A cap sheet s1 in which a plastic hollow plate S has a plurality of protrusions t for forming air bubbles, and a back sheet attached to the open side of the protrusions t in the cap sheet s1 to form a plurality of air bubbles corresponding to each protrusion t. s2, and a liner sheet s3 attached to the tip side of the projection t of the cap sheet s1.

Therefore, since the cover body B uses the plastic hollow plate S, it not only has excellent rigidity but is also lightweight.

The cover body B is formed by combining a first cover body component 1 and a second cover body component 2 which is separate from the first cover body component 1.

For this reason, the sound-absorbing panel P has a suitable configuration that allows the plate-shaped sound-absorbing body A to be housed within the cover body B without being damaged during the assembly process.

The first cover body component 1 extends from the peripheral edge of the front cover wall 11 to the rear, substantially orthogonal to the front cover wall 11, and constitutes an outer layer portion of the peripheral cover wall E. The outer circumferential cover wall portion 12 is provided. The second cover body component 2 extends from the peripheral edge of the back cover wall 21 to the front substantially perpendicular to the back cover wall 21 and covers the inner layer of the peripheral cover wall E. It is provided with an inner layer circumferential cover wall portion 22 that constitutes. The outer circumferential cover wall 12 and the inner circumferential cover wall 22 are connected by a fastener R.

Therefore, the sound absorbing panel P has a suitable configuration that allows it to be housed in the cover body B without damaging the plate sound absorbing body A during the assembly process. In addition, since the outer layer circumferential cover wall 12 and the inner layer circumferential cover wall 12 which are arranged on the peripheral edge so as to form a two-layered structure are connected by the fastener R, the first cover body component 1 and the first cover body component 1 The second cover component 2 is suitably connected to each other.

The plate-shaped sound absorber A is attached to at least the inner surface of the back cover wall 21 and the inner surface of the front cover wall 11.

Therefore, the plate-shaped sound absorber A is stably housed inside the cover body B.

The sound-absorbing panel P can be fixed to an upright wall W forming a fixture F or a standing wall forming a building via a wall fixture. Therefore, the sound-absorbing panel P can be suitably applied to the upright wall W of a booth, which is a fixture F, or the upright wall of a general house.

The plate-shaped sound absorber A includes a sound absorber main body H made of phenolic resin foam, and a protective cover material J made of cloth attached to the surface side of the sound absorber main body H.

Therefore, the sound absorbing body H is not directly exposed to the outside through the communication hole h of the front cover wall 11, so that the surface side of the sound absorbing body H is not damaged or dented due to contact with fingers, etc. It has become difficult to do so.

Note that the present invention is not limited to the embodiments detailed above.

It goes without saying that the sound-absorbing panel may be placed at any location. That is, the sound-absorbing panel may be disposed not only on the standing wall but also on the ceiling or floor. Further, the sound absorbing panel may be used by leaning against the wall instead of being attached to the wall.

The front cover wall may have a single communication hole instead of a plurality of communication holes.

The cover body may have any structure as long as it includes a front cover wall, a back cover wall, and a peripheral cover wall, and any appropriate structure can be applied to the specific structure thereof.

In addition, the specific configuration of each part is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

A... Plate sound absorber H... Sound absorber main body J... Protective cover material S... Plastic hollow plate B... Cover body 1... First cover body component 2... Second cover body component 11... Front cover wall 12... Outer layer circumferential cover wall 21... Back cover wall 22... Inner layer circumferential cover wall R... Fastening tool

Claims (8)

A sound absorbing panel comprising a plate-shaped sound absorbing body mainly composed of a plate-shaped phenolic resin foam, and a cover body formed of a hollow plastic plate and covering the outer surface of the plate-shaped sound absorbing body. There it is,
The cover body covers the surface of the plate-shaped sound absorber and includes a front cover wall provided with one or more communication holes for exposing a part of the surface of the plate-shaped sound absorber to the outside; A sound absorbing panel comprising: a back cover wall that covers a back surface of a sound absorber; and a peripheral cover wall that covers an outer peripheral end surface located between the front surface and the back surface of the plate-shaped sound absorber. The sound absorbing panel according to claim 1, wherein the plate-like sound absorbing body is formed into a substantially rectangular plate shape. a cap sheet in which the plastic hollow plate has a plurality of protrusions for forming air bubbles; a back sheet attached to the open side of the protrusions in the cap sheet and forming a plurality of air bubbles corresponding to each of the protrusions; 3. The sound absorbing panel according to claim 2, further comprising a liner sheet attached to the tip side of the protrusion of the cap sheet. 4. The cover body is formed by combining a first cover body component and a second cover body component that is separate from the first cover body component. sound absorbing panels. The first cover body component includes the front cover wall and an outer layer extending rearward from the peripheral edge of the front cover wall substantially perpendicularly to the front cover wall and forming an outer layer portion of the peripheral cover wall. and a peripheral cover wall portion,
The second cover body component includes the back cover wall and an inner layer extending from the peripheral edge of the back cover wall to the front substantially orthogonal to the back cover wall and forming an inner layer part of the peripheral cover wall. and a peripheral cover wall portion,
The sound absorbing panel according to claim 4, wherein the outer circumferential cover wall portion and the inner circumferential cover wall portion are connected by a connecting means. The sound absorbing panel according to claim 5, wherein the plate-like sound absorbing body is attached to at least an inner surface of the back cover wall and an inner surface of the front cover wall. The sound absorbing panel according to claim 1, which can be fixed to an upright wall constituting a building or a fixture via a wall fixture. The sound absorbing panel according to claim 1, wherein the plate-like sound absorbing body includes a sound absorbing body made of the phenolic resin foam, and a protective cover material made of fabric attached to the surface side of the sound absorbing body. .

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