JP3241451U - sound absorber - Google Patents

Abstract

An object of the present invention is to provide a sound absorber capable of improving durability and design. A sound-absorbing main body portion 2 having a sound-absorbing material is provided, and the sound-absorbing main body portion 2 includes a thin portion 2A formed thin with a high density of the sound absorbing material, and a thick portion 2A formed with a low density and a thick wall. A portion corresponding to the thin portion 2A on the surface of the sound absorbing main body portion 2 is a recess 2A2 that sinks inward, and a portion corresponding to the thick portion 2B is the recess. A sound absorber having a convex portion 2B2 that protrudes outward from 2A2. [Selection drawing] Fig. 1

Description

The present invention relates to sound absorbers.

Conventionally, a sound absorbing device that absorbs sound has been used to prevent sound leakage from a room (see, for example, Patent Document 1).
Among such sound absorbers, there is known one that is formed into a plate-like shape so as to be attached to a wall or the like.

JP-A-7-102657

However, such a sound absorbing device has problems that the strength of the main body is reduced due to deterioration over time or damage, and that the appearance of the plate-like surface is too monotonous and lacks interest.

In view of the above, an object of the present invention is to provide a sound absorber capable of improving durability and design.

In order to solve the above problems, the present invention provides the following means.
The present invention comprises a sound-absorbing main body having a sound-absorbing material, the sound-absorbing main body comprising a thin-walled portion having a high density of the sound-absorbing material and a thick-walled portion having a low density of the sound-absorbing material. A portion of the surface of the sound absorbing main body portion corresponding to the thin portion is formed as a recess that sinks inward, and a portion corresponding to the thick portion protrudes outward with respect to the recess. It is characterized by being made into the convex part which carries out.

According to one aspect of the present application, it is possible to improve durability and design.

1 is a plan view showing a sound absorbing device as an embodiment of the present invention; FIG. FIG. 2 is a cross-sectional view taken along the line AA of FIG. 1; FIG. 3 is an explanatory diagram showing how the sound absorbing device of FIG. 2 is manufactured, wherein (A) is an explanatory diagram showing a state in which a design surface layer is provided on the sound absorbing main body, and (B) is an upper side of the sound absorbing main body and the design surface. and FIG. 11 is an explanatory diagram showing a state in which a molding die is provided below. FIG. 2 is an explanatory diagram showing how the sound absorbing device of FIG. 1 is used, where (A) is an explanatory diagram showing how a plurality of sound absorbing devices are attached to a wall, and (B) is a state where a plurality of sound absorbing devices are hung. It is an explanatory view showing . FIG. 3 is a cross-sectional view showing a modification of the sound absorbing device of FIG. 2; FIG. 2 is a plan view showing a modification of the sound absorbing device of FIG. 1; FIG. 7 is an explanatory diagram showing how the sound absorbing device of FIG. 6 is used; FIG. 7 is an explanatory diagram showing another usage of the sound absorbing device of FIG. 6; FIG. 2 is a diagram showing a modification of the sound absorbing device of FIG. 1, wherein (A) is a plan view showing the first modification, (B) is a plan view showing the second modification, and (C) is a third modification. It is a plan view showing a modification, and (D) is a plan view showing a fourth modification. FIG. 7 is a view showing a modification of the sound absorbing device of FIG. 6, (A) is a plan view showing the first modification, (B) is a plan view showing the second modification, and (C) is a third modification. It is a plan view showing a modification, and (D) is a plan view showing a fourth modification. It is a figure which shows the modification of FIG.2 and FIG.5, Comprising: (A) is sectional drawing which shows the modification of FIG. 2, (B) is sectional drawing which shows the modification of FIG.

(embodiment)
A sound absorbing device according to an embodiment of the present invention will be described below.
FIG. 1 is a plan view showing a sound absorber.
FIG. 2 is a diagram showing the sound absorbing device 1, and is a cross-sectional view taken along the line AA in FIG.
The sound absorbing device 1 according to the embodiment of the present invention is formed in an elliptical shape in plan view, and is formed in a plate shape imitating the shape of a leaf. This sound absorbing device 1 has a design surface layer portion 3 and a sound absorbing body portion 2. - 特許庁

The design surface layer portion 3 is formed in a sheet shape, and is provided over the entire surfaces of both main surfaces 2D1 and 2D2 of the sound absorbing main body portion 2. As shown in FIG. The design surface layer 3 is made of, for example, cloth (including cotton, hemp, etc.), chemical fiber (including polyester, acrylic, rayon, etc.). The design surface layer 3 protects the main surfaces 2D1 and 2D2 of the sound absorbing main body 2 and adds design. That is, by giving the design surface layer 3 a color different from that of the sound absorbing main body 2 or making the design surface layer 3 different in shape from the sound absorbing main body 2, the variation of the design of the sound absorbing device 1 can be increased. It's like The design surface layer 3 in this embodiment is colored differently from the sound absorbing main body 2, for example, it is colored green to imitate a leaf.
The design surface layer portion 3 also extends on both sides of the edge portion 2C and the handle portion 2E, which will be described later.

The sound absorbing main body 2 is made of a sound absorbing material, and is formed into an oval and plate shape by pressing the sound absorbing material. The sound absorbing material is made of a sound absorbing material such as felt, non-woven fabric, wool (including glass wool), urethane, or the like. The sound-absorbing material in this embodiment is produced by regenerating fabric scraps, waste products, etc. as recycled cotton, and can be recycled and reused when the sound-absorbing device 1 is used. .
A handle portion 2</b>E is provided at one end portion of the elliptical shape of the sound absorbing body portion 2 . The handle portion 2E protrudes outward in the planar direction D of the sound absorbing main body portion 2, and is designed to be gripped with fingers.

Further, the sound absorbing body portion 2 includes a thin portion 2A and a thick portion 2B.
The thin portion 2A is strongly pressed from above and below in the thickness direction H, so that the density of the sound absorbing material is relatively higher than that of the thick portion 2B. The surface 2A1 of the thin portion 2A is sunk inward in the thickness direction H with respect to the surface 2B1 of the thick portion 2B, forming a recess 2A2 on the main surface 2D1. That is, the main surface 2D1 of the sound absorbing main body 2 has a concave portion 2A2 at a portion corresponding to the thin portion 2A.
The thick portion 2B is weakly pressed from above and below in the thickness direction H, so that the density of the sound absorbing material is relatively lower than that of the thin portion 2A. A surface 2B1 of the thick portion 2B protrudes outward in the thickness direction H with respect to the surface 2A1 of the thin portion 2A, and forms a convex portion 2B2 on the main surface 2D1. That is, the portion corresponding to the thick portion 2B of the main surface 2D1 of the sound absorbing main body portion 2 is a convex portion 2B2.

In the central portion of the sound absorbing main body 2 in the width direction W, a main region 2G linearly extending in a plane direction D orthogonal to the width direction W from the handle portion 2E to the vicinity of the other tip portion is a thin portion 2A. Further, sub-regions 2H alternately extending in the width direction W from the middle position of the main region 2G in the length direction are also made into thin portions 2A. Further, the edge portion 2C of the sound absorbing main body portion 2 is formed as a thin portion 2A over the entire circumference. That is, the main region 2G, the secondary region 2H, the edge 2C, and the handle 2E of the sound absorbing main body 2 are integrally formed into a thin portion 2A, which forms a recess 2A2.
The other main surface 2D2 of the sound absorbing main body 2 is a flat surface.

This sound absorbing device 1 is manufactured as follows.
As shown in FIG. 3A, first, the design surface layer 3 is provided on both main surfaces 2D1 and 2D2 of the sound absorbing main body 2. As shown in FIG. Then, as shown in FIG. 3(B), the sound absorbing body 2 and the design surface layer 3 are pressed in the thickness direction H from above and below by the molds 4 arranged above and below. The molding die 4 includes a mold recess 4A and a mold projection 4B. The part 3 is pressed more and more weakly. When the mold 4 is removed after a predetermined time has passed, the sound absorber 1 shown in FIG. 2 is formed.
The region pressed by the mold convex portion 4B becomes the thin portion 2A and the concave portion 2A2, and the region pressed by the mold concave portion 4A becomes the thick portion 2B and the convex portion 2B2.

Next, use of the sound absorbing device 1 will be described.
The other main surface 2D2 side of the sound absorbing device 1 is attached to the wall. At this time, the sound absorber 1 is attached to the wall using a holder, an adhesive, or the like. In this state, when the sound traveling toward the wall reaches the sound absorbing device 1, the sound is absorbed by the design surface layer portion 3 and the sound absorbing main body portion 2. - 特許庁As a result, the sound absorbing device 1 exerts a sound absorbing effect.
In addition, as shown in FIG. 4(A), it is also possible to arrange a plurality of sound absorbers 1 on the wall. Thereby, the design of the wall can be improved, and the sound absorbing effect can be improved.
Moreover, as shown in FIG. 4B, the sound absorber 1 can be hung from the ceiling by attaching a connecting string 6 to the handle portion 2E. At this time, an engaging portion consisting of an engaging hole may be formed in the handle portion 2E, and one end of the connecting string 6 may be attached to this engaging portion. As a result, sound traveling through space can be absorbed.

As described above, according to the sound absorbing device 1 of the present embodiment, since the sound absorbing main body 2 having the thin portion 2A and the thick portion 2B is provided, and the concave portion 2A2 and the convex portion 2B2 are provided, the density of the sound absorbing material is While the strength is increased by the high thin portion 2A, it is possible to add a pattern to the appearance due to the difference in surface level between the concave portion 2A2 and the convex portion 2B2. Therefore, durability and design can be improved.
Further, since the concave portion 2A2 is provided at the portion corresponding to the thin portion 2A, and the convex portion 2B2 is provided at the portion corresponding to the thick portion 2B, the thin portion 2A and the concave portion 2A2, and the thin portion 2A and the concave portion 2A2 can be separated by simply pressing from above and below. Also, the thick portion 2B and the convex portion 2B2 can be manufactured quickly and easily.
Further, since the entire periphery of the edge portion 2C of the sound absorbing body portion 2 is the thin portion 2A, the edge portion 2C, which deteriorates rapidly, can be reinforced and the durability can be improved.
In addition, since the design surface layer 3 is provided, variations can be added to the monotonous appearance of the sound absorbing material, and not only the design can be improved, but also the surface of the sound absorbing main body 2 can be protected. can.

In addition, since the main region 2G and the secondary region 2H of the sound absorbing main body 2 are the thin portion 2A and the portion corresponding to the thin portion 2A is the recess 2A2, the central portion of the sound absorbing main body 2 can be reinforced. Not only can the durability be improved, but also the design can be improved. For example, the surfaces of the main region 2G and the secondary region 2H can be given a pattern that sinks inward by the concave portion 2A2, and a design imitating the veins of a leaf can be applied.
In addition, since the thin portion 2A and the recessed portion 2A2 are integrally provided over the main region 2G, the secondary region 2H and the edge portion 2C, the edge portion 2C is reinforced from the central portion of the sound absorbing main body portion 2 and the design is improved. can be improved.
In addition, since the sound absorbing main body 2 is made of a reusable sound absorbing material, it is possible to reduce the load on the global environment and contribute to the realization of a sustainable society.

The technical scope of the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the gist of the invention.
For example, although the concave portion 2A2 and the convex portion 2B2 are provided on one main surface 2D1 of the sound absorbing main body portion 2, the present invention is not limited to this, and the configuration thereof can be changed as appropriate. Specifically, as shown in FIG. 5, both main surfaces 2D1 and 2D2 of the sound absorbing main body 2 may be provided with recesses 2A2 and protrusions 2B2. As a result, the front and back surfaces of the sound-absorbing main body 2 can be uneven, and the design can be improved.
Further, the concave portion 2A2 and the convex portion 2B2 may be provided line-symmetrically with respect to a central imaginary line V (shown in FIG. 5) extending in the width direction W at the central portion of the sound absorbing body portion 2 in the thickness direction H. , may be provided asymmetrically. That is, the concave portion 2A2 and the convex portion 2B2 may be provided on both main surfaces 2D1 and 2D2 at positions corresponding to each other so as to face each other in the thickness direction H, or may be provided on either one of the main surfaces 2D1 and 2D2. may have been In other words, the concave portion 2A2 and the convex portion 2B2 may be provided on at least one of the main surfaces 2D1 and 2D2.

In addition, although the sound absorbing main body 2 is formed in an elliptical shape in plan view, it is not limited to this, and its configuration can be changed as appropriate. For example, the sound-absorbing body 2 may have a triangular, quadrangular, pentagonal or more polygonal shape when viewed from above, or may have a circular shape, a star shape, a human shape, a vehicle shape, a natural object shape, a character shape, or the like. good too. For example, as shown in FIG. 6, the sound absorbing main body 2 may be triangular in plan view. In FIG. 6, the sound absorbing device 1A is planarly viewed with a triangular apex portion missing and flat. A central portion of the sound absorbing body portion 2 is a thick portion 2B. The entire periphery of the edge portion 2C is a thin portion 2A, and a plurality of engaging portions 2F are provided at equal intervals over the entire periphery of the edge portion 2C. These engaging portions 2F are through holes that pass through the edge portion 2C in the thickness direction H. As shown in FIG. By engaging these engaging portions 2F with the engaging portions 2F of other sound absorbing devices 1A by means of engaging members (not shown), a plurality of sound absorbing devices 1A are configured to be detachably connected. . With this engaging portion 2F, other sound absorbers 1A can be combined and connected, and the design can be improved.

This sound absorbing device 1A has a holding portion 5 as shown in FIG. The holding part 5 holds the sound absorber 1A. The holding portion 5 in FIG. 7 includes a wall surface holding portion 5A, a body support portion 5B, and a reinforcing support portion 5C. The wall surface holding part 5A is formed in a triangular plate shape in plan view, and is attached along the wall surface. The body support portion 5B is formed in a triangular plate shape when viewed from above, and is connected to the wall surface support portion 5A to support the sound absorber 1A. The reinforcing support portion 5C is connected between the main body support portion 5B and the wall surface holding portion 5A to reinforce the main body support portion 5B. Under such a configuration, when the wall surface holding portion 5A is attached along the wall, the main body support portion 5B is oriented horizontally, and the reinforcing support portion 5C reinforces the main body support portion 5B from below. In addition, the main body support portion 5B may be one triangle, or a plurality of triangles may be connected. The sound absorber 1A is placed on the upper surface of the main body support portion 5B. When the body support portion 5B is configured by connecting a plurality of triangles, the sound absorbers 1A may be placed in a state where the sound absorbers 1A are connected via the engaging portions 2F. Moreover, at least one sound absorber 1A may be vertically arranged in a state in which a plurality of sound absorbers 1A are rotatably connected via the engaging portion 2F.
As a result, the sound absorbing device 1A can be horizontally mounted on a wall, and can function not only as a sound absorbing function but also as a shelf or an interior decoration. It may also be a shelf for animals such as cats CA (shown in FIG. 7).

Also, the configuration of the holding portion 5 can be changed as appropriate. For example, as shown in FIG. 8, the holding portion 5 may include a main body support portion 5B and a connection support portion 5D. The connection support portion 5D is formed in a prism shape. Under such a configuration, the connection support portion 5D may be vertically connected to the main body support portion 5B, the main body support portion 5B may be further provided thereon, and the sound absorbers 1A may be installed in a plurality of stages.

Moreover, the configuration of the sound absorbing device 1A can be changed as appropriate. For example, as shown in FIG. 10A, the number and positions of installation of the engaging portions 2F can be changed as appropriate. Alternatively, the central portion of the sound absorbing main body 2 may be the thin portion 2A, and the portion corresponding to the thin portion 2A may be the circular concave portion 2A2 in plan view. Also, as shown in FIG. 10B, the engaging portion 2F may not be provided. Further, as shown in FIG. 10C, each vertex of the triangle may be a smooth R-shaped curve, or one engaging portion 2F may be provided on each side. . Furthermore, as shown in FIG. 10(D), each vertex of the triangle may be pointed.
Further, the shape of the recess 2A2 in the central portion of the sound absorbing main body 2 can be changed as appropriate, and the recess 2A2 does not have to be provided.

In addition, although the sound absorbing main body 2 of the sound absorbing device 1 has a leaf design, the design is not limited to this, and the shape of the leaf can be changed as appropriate. For example, as shown in FIG. 9(A), the sound absorbing main body 2 may be formed in a fan shape in a plan view, and may be designed as ginkgo leaves, or as shown in FIG. 9(B). The leaves may be designed. Moreover, as shown in FIG. 9(C), the sound absorbing main body 2 may be designed as a four-leaf clover leaf, or as shown in FIG. 9(D), a plurality of cut leaves. may be designed to

Further, although the entire circumference of the edge portion 2C of the sound absorbing main body portion 2 is the thin portion 2A, the configuration is not limited to this and can be changed as appropriate. For example, the thin portion 2A may be provided in an arbitrary portion of the entire circumference of the edge portion 2C, or the thin portion 2A is not provided in the entire circumference of the edge portion 2C and the thick portion 2B is provided in the entire circumference. It may be said that Further, as shown in FIGS. 11A and 11B, the edge portion 2C may be closed by the design surface layer portion 3 without the thin portion 2A provided on the entire periphery of the edge portion 2C.
Also, although the sound absorbing main body 2 is formed in a plate shape, it is not limited to this, and its configuration can be changed as appropriate. For example, the sound absorbing main body 2 may be spherical or block-shaped.
Also, although the design surface layer 3 is provided over the entire surface of the sound absorbing main body 2, it is not limited to this, and its configuration can be changed as appropriate. For example, the design surface layer portion 3 may be provided only on a portion of the surface of the sound absorbing main body portion 2 .
Also, the shape of the design surface layer 3 may be different from the shape of the sound absorbing main body 2, and can be changed as appropriate. For example, the surface of the sound absorbing main body 2 may be provided with a differently shaped design surface layer 3 .
Moreover, although the design surface layer 3 is colored differently from the sound absorbing main body 2, it is not limited to this, and may be the same color.
Also, the design surface layer portion 3 may not be provided.

Further, although the main region 2G and the secondary region 2H of the sound absorbing main body 2 are provided with the thin portions 2A, the present invention is not limited to this, and the configuration thereof can be changed as appropriate. For example, the shape of the main region 2G or secondary region 2H can be changed as appropriate.
Further, the thin portion 2A may not be provided in the main region 2G or the secondary region 2H, and the recess 2A2 may not be provided in the main region 2G or the secondary region 2H.
Further, the portion corresponding to the thin portion 2A may not be the concave portion 2A2, and the portion corresponding to the thick portion 2B may not be the convex portion 2B2.
Also, the portion corresponding to the concave portion 2A2 may not be the thin portion 2A, and the portion corresponding to the convex portion 2B2 may not be the thick portion 2B.
Moreover, although the engaging portion 2F is provided, the present invention is not limited to this, and the configuration thereof can be changed as appropriate. For example, the engaging portion 2F may be a depression, a projection, a notch, or the like, or the engaging portion 2F may not be provided.
Further, although the sound absorbing main body 2 is made of a sound absorbing material that can be recycled and reused, it is not limited to this, and its configuration can be changed as appropriate. For example, it may be made of sound absorbing material that is not reused.

In relation to the above-described embodiments, the following remarks are further indicated.
(Appendix 1)
comprising a sound absorbing main body having a sound absorbing material,
The sound absorbing main body includes a thin portion formed thin with a high density of the sound absorbing material and a thick portion formed thick with a low density,
A portion of the surface of the sound-absorbing main body portion corresponding to the thin-walled portion is a concave portion that sinks inward, and a portion corresponding to the thick-walled portion is a convex portion that protrudes outward from the concave portion. sound absorber.

(Appendix 2)
The sound absorbing device according to appendix 1, wherein the entire circumference of the edge of the sound absorbing main body is the thin portion.

(Appendix 3)
The sound absorbing device according to appendix 1 or appendix 2, wherein the sound absorbing main body is formed in a plate shape, and the concave portion and the convex portion are provided on both main surfaces of the sound absorbing main body.

(Appendix 4)
3. The sound absorbing device according to any one of appendices 1 to 3, wherein an engaging portion is provided on an edge portion of the sound absorbing body portion.

(Appendix 5)
5. The sound absorbing device according to any one of appendices 1 to 4, comprising a design surface layer provided on the surface of the sound absorbing main body.

(Appendix 6)
The sound absorbing main body is formed in a plate shape, and has a main region extending in a direction intersecting the width direction at a central portion in the width direction of the sound absorbing main body, and a main region extending in the width direction from the main region. 1 to 5, wherein the secondary region is the thin-walled portion, and portions corresponding to the thin-walled portions of the main region and the secondary region of the main surface of the sound-absorbing main body portion are the recesses. A sound absorber according to any one of claims 1 to 3.

1, 1A Sound absorber 2 Sound absorbing main body 2A Thin portion 2A2 Concave portion 2B Thick portion 2B2 Convex portion 2C Edge portions 2D1, 2D2 Main surface 2F Engagement portion 2G Main region 2H Secondary region 3 Design surface layer W Width direction

Claims (6)

comprising a sound absorbing main body having a sound absorbing material,
The sound absorbing main body includes a thin portion formed thin with a high density of the sound absorbing material and a thick portion formed thick with a low density,
A portion of the surface of the sound-absorbing main body portion corresponding to the thin-walled portion is a concave portion that sinks inward, and a portion corresponding to the thick-walled portion is a convex portion that protrudes outward from the concave portion. sound absorber. 2. The sound absorbing device according to claim 1, wherein the entire circumference of the edge of the sound absorbing main body is the thin portion. 3. The sound absorbing device according to claim 1, wherein the sound absorbing body is plate-shaped, and the concave portion and the convex portion are provided on both main surfaces of the sound absorbing body. 3. The sound absorbing device according to claim 1, wherein an engaging portion is provided on the edge of the sound absorbing main body. 3. The sound absorbing device according to claim 1, further comprising a design surface layer provided on the surface of the sound absorbing main body. The sound absorbing main body is formed in a plate shape, and has a main region extending in a direction intersecting the width direction at a central portion in the width direction of the sound absorbing main body, and a main region extending in the width direction from the main region. 1 or claim 2, wherein the secondary area is the thin portion, and portions of the main surface of the sound absorbing body portion corresponding to the thin portion of the main area and the secondary area are the recess. 2. The sound absorbing device according to 2.

Images