CN205705634U

CN205705634U - Acoustical cotton

Info

Publication number: CN205705634U
Application number: CN201620515275.3U
Authority: CN
Inventors: 黄凤奎
Original assignee: Shenzhen City Hong Quan Composite Materials Co Ltd
Current assignee: Shenzhen City Hong Quan Composite Materials Co Ltd
Priority date: 2016-05-31
Filing date: 2016-05-31
Publication date: 2016-11-23
Anticipated expiration: 2026-05-31

Abstract

The acoustical cotton that the utility model provides, including one first nonwoven layer being cascading from top to bottom, a terylene layer and one second nonwoven layer；By the first recess in the first nonwoven layer and the second nonwoven layer and the 4th recess, add the absorption area to sound, make a part of sound in the first nonwoven layer and the second nonwoven layer internal reflection and progressively be absorbed simultaneously, another part sound is penetrated into respectively by the first nonwoven layer and the second nonwoven layer or in the second recess of being introduced in respectively on terylene layer by the first bullport and the second bullport and the 3rd recess, second recess and the 3rd recess make sound in terylene layer internal reflection and progressively absorbed, thus can only improve the sound-absorbing effect of acoustical cotton.

Description

Acoustical cotton

Technical field

The utility model relates to a kind of acoustical cotton.

Background technology

Acoustical cotton on market uses simple stepped construction mostly, the limited sorption capacity to sound.

Utility model content

The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, provides a kind of acoustical cotton, and it is by increasing Add to acoustic absorption area and the reflection direction changing sound, improve the adsorption effect to sound.

The utility model is achieved in that a kind of acoustical cotton, including one first nothing being cascading from top to bottom Spin layer of cloth, a terylene layer and one second nonwoven layer；

The upper surface of described first nonwoven layer offers multiple arrangement in cellular and that upper end is big, lower end is little is first recessed Position, described first recess cross section is regular hexagon, and the bottom of described first recess offers one and runs through described first non-woven fabrics First bullport of layer, described terylene layer upper surface offers multiple arrangement in cellular and that upper end is big, lower end is little is second recessed Position, described second recess cross section is regular hexagon, and the top of described second recess connects with the bottom of described first bullport, Described terylene layer lower surface offers multiple arrangement in cellular and that upper end is big, lower end is little the 3rd recess, described 3rd recess Cross section is regular hexagon, and described second nonwoven layer lower surface offers multiple arrangement in cellular and upper end is big, lower end is little The 4th recess, described 4th recess cross section is regular hexagon, and the top of described 4th recess offers runs through described second Second bullport of nonwoven layer, the bottom of described 3rd recess connects with the top of described second bullport.

Specifically, described first bullport and the misalignment of described second recess are arranged.

Specifically, described second bullport and the misalignment of described 3rd recess are arranged.

The acoustical cotton that the utility model provides, by the first recess in the first nonwoven layer and the second nonwoven layer and the Four recess, add the absorption area to sound, make a part of sound in the first nonwoven layer and the second nonwoven layer simultaneously Reflecting and progressively being absorbed, another part sound is penetrated into respectively by the first nonwoven layer and the second nonwoven layer or passes through first In the second recess that bullport and the second bullport are introduced on terylene layer respectively and the 3rd recess, the second recess and the 3rd recessed Position makes sound in terylene layer internal reflection and progressively absorbed, thus can only improve the sound-absorbing effect of acoustical cotton.

Brief description

In order to be illustrated more clearly that the technical solution of the utility model, below by the accompanying drawing to use required in embodiment It is briefly described, it should be apparent that, the accompanying drawing in describing below is only some embodiments of the present utility model, for ability From the point of view of the those of ordinary skill of territory, on the premise of not paying creative work, the attached of other can also be obtained according to these accompanying drawings Figure.

Fig. 1 is the sectional view of the acoustical cotton that the utility model provides.

Fig. 2 is the sectional view of the first non-woven fabrics in Fig. 1.

Fig. 3 is the sectional view of terylene layer in Fig. 1.

Detailed description of the invention

Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out Clearly and completely describe.

As shown in Fig. 1 ~ 3, a kind of acoustical cotton of the utility model embodiment offer, including be cascading from top to bottom One first nonwoven layer the 1st, a terylene layer 2 and one second nonwoven layer 3；

The upper surface of the first nonwoven layer 1 offers multiple arrangement in cellular and that upper end is big, lower end is little the first recess 11, the first recess 11 cross section is regular hexagon, the bottom of the first recess 11 offer one run through the first nonwoven layer 1 first Bullport 12, terylene layer 2 upper surface offer multiple arrangement in cellular and that upper end is big, lower end is little the second recess 21, second Recess 21 cross section is regular hexagon, and the top of the second recess 21 connects with the bottom of the first bullport 12, terylene layer 2 lower surface Offering multiple arrangement in cellular and that upper end is big, lower end is little the 3rd recess 22, the 3rd recess 22 cross section is regular hexagon, Second nonwoven layer 3 lower surface offers multiple arrangement in cellular and that upper end is big, lower end is little the 4th recess 31, the 4th recess 31 cross sections are regular hexagon, and the top of the 4th recess 31 offers the second bullport 32 running through the second nonwoven layer 3, the 3rd The bottom of recess 22 connects with the top of the second bullport 32.

Specifically, the misalignment of the first bullport 12 and the second recess 21 is arranged, and so enters from the first bullport 12 Enter the sound wave of the second recess 21, by the inclined-plane on the second recess 21, just cannot reflect the second recess 21, can only be recessed second Position 21 internal reflections and progressively absorbing.

Specifically, the misalignment of the second bullport 32 and the 3rd recess 22 is arranged, and so enters from the second bullport 32 Enter the sound wave of the 3rd recess 22, by the inclined-plane on the 3rd recess 22, just cannot reflect the 3rd recess 22, can only be recessed the 3rd Position 22 internal reflections and progressively absorbing.

Further, terylene layer 2 is made up of polypropylene fibre and polyester fiber.

The acoustical cotton that the utility model provides, its operation principle is: when sound reaches the first nonwoven layer 1, the first nothing Spinning the first recess 11 that layer of cloth 1 upper surface offers makes the first nonwoven layer 1 bigger to the absorption area of sound, the first recess simultaneously Inclined-plane (not shown) bottom 11 can change the reflection direction of sound, allows sound in the first nonwoven layer 1 internal reflection and be absorbed, A part of sound is absorbed through the first nonwoven layer 1, and another part sound then passes through the first nonwoven layer 1 or drawn by first Guide hole 12 enters the second recess 21 on terylene layer 2, and the inclined-plane (not shown) bottom the second recess 21 makes sound at the second recess 21 internal reflections, are progressively absorbed by terylene layer 2；Same, when sound reaches the second nonwoven layer 3, the second nonwoven layer 3 following table The 4th recess 31 that face is offered makes the second nonwoven layer 3 bigger to the absorption area of sound, and the 4th recess 31 top is oblique simultaneously Face (not shown) can change the reflection direction of sound, allows sound in the second nonwoven layer 3 internal reflection and be absorbed, a part of sound Being absorbed through the second nonwoven layer 3 energy, another part sound then passes through the second nonwoven layer 3 or passes through the second bullport 32 Entering the 3rd recess 22 under terylene layer 2, the inclined-plane (not shown) on the 3rd recess 22 top makes sound inside the 3rd recess 22 Reflection, is progressively absorbed by terylene layer 2.

The acoustical cotton that the utility model provides, by the first recess 11 in the first nonwoven layer 1 and the second nonwoven layer 3 With the 4th recess 31, add the absorption area to sound, make a part of sound at the first nonwoven layer 1 and the second nonwoven simultaneously Layer of cloth 3 internal reflection and progressively being absorbed, another part sound is penetrated into respectively by the first nonwoven layer 1 and the second nonwoven layer 3 Or the second recess 21 of being introduced in respectively on terylene layer 2 by the first bullport 12 and the second bullport 32 and the 3rd recess 22 In, the second recess 21 and the 3rd recess 22 make sound in terylene layer 2 internal reflection and progressively absorbed, thus can only improve suction The cotton sound-absorbing effect of sound.

It is above preferred embodiment of the present utility model, it is noted that for those skilled in the art For, on the premise of without departing from the utility model principle, some improvements and modifications can also be made, these improvements and modifications are also It is considered as protection domain of the present utility model.

Claims

1. an acoustical cotton, it is characterised in that include one first nonwoven layer, the terylene layer being cascading from top to bottom And one second nonwoven layer；

The upper surface of described first nonwoven layer offers multiple arrangement in cellular and that upper end is big, lower end is little the first recess, Described first recess cross section is regular hexagon, and the bottom of described first recess offers one and runs through described first nonwoven layer First bullport, described terylene layer upper surface offers multiple arrangement in cellular and that upper end is big, lower end is little the second recess, institute Stating the second recess cross section is regular hexagon, and the top of described second recess connects with the bottom of described first bullport, described Terylene layer lower surface offers multiple arrangement in cellular and that upper end is big, lower end is little the 3rd recess, and described 3rd recess is transversal Face is regular hexagon, and described second nonwoven layer lower surface offers multiple arrangement in cellular and upper end is big, lower end is little the Four recess, described 4th recess cross section is regular hexagon, and the top of described 4th recess offers runs through described second nonwoven Second bullport of layer of cloth, the bottom of described 3rd recess connects with the top of described second bullport.

2. acoustical cotton according to claim 1, it is characterised in that the center of described first bullport and described second recess Line shifts to install.

3. acoustical cotton according to claim 2, it is characterised in that the center of described second bullport and described 3rd recess Line shifts to install.