Sound insulation door plate based on V-shaped groove structure

Abstract

The utility model relates to the field of sound insulation, and particularly provides a sound insulation door plate based on a V-shaped groove structure, the sound insulation door plate comprises a door frame body and a sound absorption part, the door frame body comprises two door plates and four narrow plates, the two door plates and the four narrow plates form a closed space, a sound scattering plate is arranged in the door frame body, and the four edges of the sound scattering plate are fixedly connected to the four narrow plates correspondingly; the sound scattering plate is parallel to the door plate, sound absorption parts are arranged between the sound scattering plate and the door plate, the space between the sound scattering plate and the door plate is filled with the sound absorption parts, the sound absorption parts are arranged on the two sides of the sound scattering plate, and a V-shaped groove is formed in the side face of the sound scattering plate. On one hand, the component of sound waves in the direction of the long edge of the long narrow plate is large, the propagation path of the sound waves in the sound absorption part is long, and more sound wave energy is reduced; and on the other hand, the V-shaped groove is formed, so that the component of sound waves in the direction perpendicular to the door plate is reduced, and the sound wave energy reaching the opposite side door plate through the sound absorption part is reduced. Therefore, the sound insulation door plate is good in sound insulation effect.

Description

Technical Field

[0001] The present application relates to the field of sound insulation, and in particular to a sound insulation door panel based on a V-groove structure. Background Art

[0002] Cars on the road, noisy squares, quarrels between neighbors, etc. can all generate noise. Being in a noisy environment for a long time will seriously harm human health. Generally, sounds above 70 decibels are considered noise. Specifically, the standards for noise in different environments are different. For example, in areas that require quietness, such as convalescent areas, sounds above 50 decibels during the day and above 40 decibels at night are considered noise. In order to reduce the harm of noise, soundproof doors are installed in homes, hospitals, KTVs and other places for sound insulation to achieve the purpose of reducing noise.

[0003] Existing soundproof door panels mainly use sound-absorbing materials, such as porous foam, asbestos, glass wool, carbon fiber, etc. to reduce the energy of sound waves, thereby achieving a sound insulation effect. Specifically, when sound waves propagate in the sound-absorbing material, they need to pass through multiple pores, and the sound waves are reflected on the hole walls. The energy of the sound waves is reduced during reflection, so that the energy of the sound waves is reduced when propagating in the sound-absorbing material, which plays a role in sound insulation. An invention patent application named "Visual Soundproof Door" with application publication number: CN 105756524 A discloses a visual soundproof door, which includes two layers of fire-resistant material boards and soundproof material boards, wherein the soundproof material board is arranged between the two layers of fire-resistant material boards; most of the sound waves pass through the soundproof material board in a direction perpendicular to the plane where the fire-resistant material board is located. The utility model patent named "Soundproof Door" with the authorization announcement number CN 211144282 U discloses a soundproof door, wherein the soundproof module includes a first soundproof felt, a sound-absorbing cotton, a soundproof board and a second soundproof felt stacked in sequence; during soundproofing, the sound waves pass through the soundproof material board almost in a direction perpendicular to the plane where the first soundproof felt is located. Among them, most of the sound waves pass through the sound-absorbing material and the sound-insulating material in the vertical direction of the door panel. Generally, the thickness of the door panel is less than 25 cm, which makes the path of the sound wave propagation in the sound-absorbing material shorter, thereby insufficiently reducing the sound wave energy, resulting in poor sound insulation effect.

[0004] In summary, the path for sound waves to propagate in the sound-absorbing material in the existing soundproof door panels is relatively short, resulting in poor sound insulation effect of the existing soundproof door panels. Utility Model Content

[0005] The purpose of the present utility model is to provide a sound insulation door panel based on a V-groove structure to address the deficiencies in the above-mentioned prior art, so as to solve the problem that the sound insulation effect of the existing sound insulation door panel is poor due to the short propagation path of sound waves in the sound-absorbing material in the existing sound insulation door panel.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is as follows: The present application provides a soundproof door panel based on a V-groove structure, which includes a door frame body and a sound-absorbing part. The door frame body includes two door panels and four narrow panels, and the two door panels and the four narrow panels form a closed space. A sound-scattering board is arranged in the door frame body, and the four sides of the sound-scattering board are respectively fixedly connected to the four narrow panels; in this way, the sound-scattering board can be fixed in the door frame body. The sound-scattering board is parallel to the door panel, and a sound-absorbing part is arranged between the sound-scattering board and the door panel; it is used to reduce the energy of the sound waves, thereby achieving the effect of sound insulation. The sound-absorbing part fills the space between the sound-scattering board and the door panel, and the sound-absorbing part is arranged on both sides of the sound-scattering board. A V-shaped groove is arranged on the side of the sound-scattering board; it is used to scatter the sound waves and prevent the sound waves from being concentrated in the direction perpendicular to the door panel.

[0007] Furthermore, V-shaped grooves are arranged on both sides of the sound scattering plate, the V-shaped grooves on both sides of the sound scattering plate are arranged in a staggered manner, and the V-shaped grooves on both sides of the sound scattering plate do not penetrate each other; further, the depth of the V-shaped grooves is greater than half of the thickness of the sound scattering plate. In this way, more V-shaped grooves can be arranged in a limited space in the door frame body, so that more sound waves are scattered, so that the sound wave component in the plane where the door panel is located is larger, the propagation distance of the sound wave in the sound absorbing part is increased, more sound wave energy is absorbed, and the sound insulation effect is improved.

[0008] Furthermore, the V-shaped groove has a groove angle of 30° to 120°.

[0009] Furthermore, the extension directions of the V-shaped grooves are parallel to each other and are parallel to the direction of the long sides of the shorter narrow plates; in this way, most of the scattered sound waves are along the long sides of the longer narrow plates, and the length of interaction with the sound absorbing part during sound wave propagation is longer, so more sound wave energy is absorbed and the sound insulation effect is better.

[0010] More preferably, the sound diffusion panel is equidistant from the two door panels; thus, the sound insulation effect on both sides of the sound insulation door panel is the same.

[0011] More preferably, a sound scattering structure is provided in the sound absorbing part, and the material of the sound scattering structure is plastic; the sound scattering structure further scatters the sound waves, so that the energy loss of the sound waves is greater, thereby enhancing the sound insulation effect.

[0012] More preferably, the material of the sound absorbing part is one of porous foam, asbestos, glass wool, and carbon fiber. The material of the sound dissipating board is one of vinyl board, polyethylene board, and plastic foam board. The material of the door panel and the narrow board is hard wood.

[0013] Compared with the prior art, the utility model has the following beneficial effects: The utility model discloses a soundproof door panel based on a V-groove structure. The present application utilizes the V-groove on the sound scattering plate to scatter the sound waves, so that the component of the sound waves along the direction of the long side of the longer narrow plate is larger, and the sound waves can be transmitted in the sound absorbing part in a direction parallel to the long side of the long narrow plate. In this direction, the path of the sound wave propagation in the sound absorbing part is longer than the path of the sound wave passing through the sound absorbing material perpendicular to the door panel in the prior art. The longer propagation path in the sound absorbing part reduces the energy of the sound wave more. At the same time, the setting of the V-groove reduces the component of the sound wave in the direction perpendicular to the door panel, thereby reducing the energy of the sound wave when it passes through the sound absorbing part to the opposite door panel. Therefore, the soundproof door panel of the present application has a better sound insulation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A cross-sectional schematic diagram of a sound insulation door panel based on a V-shaped groove structure provided by the utility model;

[0015] Figure 2 A partial schematic diagram of a sound-dissipating plate in a sound-insulating door panel based on a V-shaped groove structure provided by the utility model;

[0016] Figure 3 A partial schematic diagram of another sound-dissipating plate in a sound-insulating door panel based on a V-shaped groove structure provided by the utility model;

[0017] Figure 4 A partial schematic diagram of another sound insulation door panel based on a V-groove structure provided by the utility model in which a sound dispersion structure is provided.

[0018] Icon: 1-door frame body; 2-sound absorbing part; 3-sound diffusion board; 4-sound diffusion structure. DETAILED DESCRIPTION

[0019] In order to make the implementation process of the utility model clearer, it will be described in detail below with reference to the accompanying drawings.

[0020] The utility model provides a sound insulation door panel based on a V-shaped groove structure, such as Figure 1As shown, the soundproof door panel includes a door frame body 1, a sound absorbing part 2, and a sound scattering board 3. The door frame body 1 of the soundproof door panel includes two door panels and four narrow boards, and the two door panels and the four narrow boards are fixedly connected to form a closed space. The material of the door panels and the narrow boards can be hard wood or other materials. The material of the sound scattering board 3 is one of vinyl boards, polyethylene boards, and plastic foam boards; these materials have an absorption effect on sound waves, that is, they can reduce the energy of sound waves. A sound scattering board 3 is arranged in the door frame body 1, and the four sides of the sound scattering board 3 are respectively fixedly connected to the four narrow boards, specifically, they can be bonded or connected by a mortise and tenon structure; in this way, the sound scattering board 3 can be fixed in the door frame body 1. The sound scattering plate 3 is rectangular in shape, and its length and width are slightly smaller than those of the door panels. The thickness of the sound scattering plate 3 is one-fourth to one-third of the distance between the two door panels. In this way, it is convenient to set a deeper V-shaped groove on the sound scattering plate 3 to improve the effect of scattering sound waves, and more sound absorbing materials can be set between the sound scattering plate 3 and the door panels to improve the sound absorbing effect. Preferably, the distance between the sound scattering plate 3 and the two door panels is equal; in this way, the sound insulation effect on both sides of the soundproof door panel is the same.

[0021] The material of the sound-absorbing part 2 is one of porous foam, asbestos, glass wool, and carbon fiber; these materials are porous materials, and it is difficult for sound waves to propagate through the holes through reflection. They are reflected multiple times on the hole wall, and the energy of the sound waves is reduced, thereby playing a sound insulation role. The sound-scattering board 3 is parallel to the door panel, and a sound-absorbing part 2 is arranged between the sound-scattering board 3 and the door panel; it is used to reduce the energy of the sound waves, thereby achieving the effect of sound insulation. The sound-absorbing part 2 fills the space between the sound-scattering board 3 and the door panel, and the sound-absorbing part 2 is arranged on both sides of the sound-scattering board 3. The sound wave can be decomposed into a component perpendicular to the door panel and a component parallel to the plane of the door panel. Among them, the smaller the energy of the above two sound wave components, especially the sound wave component perpendicular to the door panel, the better the sound insulation effect. A V-shaped groove is arranged on the side of the sound-scattering board 3; it is used to scatter the sound waves and prevent the sound waves from concentrating in the direction perpendicular to the door panel. Specifically, on the one hand, since a part of the sound waves is scattered into the plane parallel to the plane where the door panel is located, the size of the sound wave component in the direction perpendicular to the door panel is reduced, so that the sound wave energy is smaller when this component reaches the opposite door panel, thereby improving the sound insulation effect; on the other hand, for the sound wave component scattered into the plane parallel to the plane where the door panel is located, the length of the door panel in this direction is longer, that is, when the sound wave component is transmitted, the propagation distance in the sound absorbing part 2 is longer, so that the energy of the sound wave is reduced more and the sound insulation effect is enhanced.

[0022] Furthermore, if Figure 2As shown, V-shaped grooves are arranged on both sides of the sound scattering plate 3. The V-shaped grooves on the two sides of the sound scattering plate 3 are arranged in a staggered manner, and the V-shaped grooves on the two sides of the sound scattering plate do not penetrate each other. The depth of the V-shaped grooves is greater than half of the thickness of the sound scattering plate. In this way, more and deeper V-shaped grooves can be arranged in the limited space in the door frame body 1, so that the scattering is more dispersed, so that the sound wave component in the plane where the parallel door panel is located is larger, and the propagation distance of the sound wave in the sound absorbing part is increased, so that more sound wave energy is absorbed, and the sound insulation effect is improved. Specifically, the grooving angle of the V-shaped groove, that is, Figure 2 and Figure 3 ∠a in the angle is 30° to 120°; in this way, it is convenient for the sound wave to be emitted after entering the groove to form a scattered sound wave, and the sound wave component in the plane parallel to the plane where the door panel is located can be larger, and the sound wave component in the direction perpendicular to the door panel can be smaller. More specifically, the V-shaped groove can be symmetrical, such as Figure 2 The sizes of ∠b and ∠c are equal, which is convenient for preparation; it can also be asymmetric, such as Figure 3 The sizes of ∠b and ∠c are not equal, so that the main scattering direction of the other side of the V-shaped groove is different, making the scattered sound wave direction more abundant, so that the interaction distance between the sound wave and the sound absorbing part 2 is longer, and the sound insulation effect is enhanced. Similarly, the lengths of the two sides of the V-shaped groove can also be equal or unequal. The shapes and sizes of multiple V-shaped grooves can be exactly the same, which is convenient for preparation; or they can be different, so that the sound insulation effect of sound waves in different directions can be better.

[0023] More preferably, the extension directions of the V-shaped grooves are parallel to each other and to the direction of the long side of the shorter narrow board; in this way, most of the scattered sound waves are along the long side of the longer narrow board, and the length of the sound wave interaction with the sound absorbing part during the propagation of the sound wave is longer, so more sound wave energy is absorbed and the sound insulation effect is better. When the lengths of the narrow boards are the same, the longer narrow board is any pair of narrow boards, and the shorter narrow board is the other pair of narrow boards.

[0024] Preferably, if Figure 4 As shown, a sound scattering structure 4 is provided in the sound absorbing part 2. The material of the sound scattering structure 4 is plastic and the sound scattering structure 4 is spherical. The propagation speeds of sound waves in the plastic and the material of the sound absorbing part 2 are different. At the boundary between the spherical sound scattering structure 4 and the sound absorbing part 2, the sound waves are scattered, which changes the propagation direction of the sound waves, thereby making the sound wave component perpendicular to the door panel smaller; the sound wave component propagating in the plane parallel to the plane where the door panel is located is larger, so that the propagation path of the sound wave in the sound absorbing part 2 is longer; therefore, the energy loss of the sound wave is greater, and the sound insulation effect of the present application is further improved. In addition, the energy of the sound wave will be reduced each time it is scattered. Multiple scatterings between the sound scattering structures 4 will cause the energy of the sound wave to drop more, thereby enhancing the sound insulation effect. The distribution of the sound scattering structure 4 can be uniform or uneven. Preferably, the sound scattering structure 4 is unevenly distributed. Specifically, Figure 4 As shown, the density of the sound scattering structure 4 inside the V-shaped groove is greater than the density of the sound scattering structure 4 in the rest of the sound absorbing part 2. In this way, the sound waves are localized inside the V-shaped groove, the sound waves are scattered more times, the energy loss is greater, and the sound insulation effect is better.

[0025] When used, the sound wave passes through the door panel, and firstly, a part of the sound wave energy is lost in the sound absorbing part 2; when propagating to the sound scattering plate 3, the sound wave is scattered, the propagation direction of the sound wave is changed, and the sound wave energy is further reduced during the scattering process; the scattered sound wave is absorbed by the sound absorbing part 2 again, the energy is further reduced, and finally passes through the opposite door panel; compared with the incident time, the energy of the sound wave has been greatly reduced, thereby achieving the purpose of sound insulation. Specifically, the V-shaped groove on the sound scattering plate 3 makes the sound wave component in the plane parallel to the plane where the door panel is located larger, and the sound wave component in the direction perpendicular to the door panel is smaller; in this way, on the one hand, the size of the sound wave component in the direction perpendicular to the door panel is reduced, so that the sound wave energy is smaller when the component reaches the opposite door panel, thereby improving the sound insulation effect; on the other hand, the sound wave component in the plane parallel to the plane where the door panel is located is larger, the length of the door panel in this direction is longer, and the propagation distance of the above-mentioned sound wave component in the sound absorbing part 2 is longer, so the energy of the sound wave is reduced more, and the sound insulation effect is enhanced. In addition, by providing a sound scattering structure 4 in the sound absorbing part 2, the sound waves are scattered more times, thereby increasing the energy loss of the sound waves and further improving the sound insulation effect.

[0026] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A soundproof door panel based on a V-groove structure, the soundproof door panel comprising a door frame body and a sound absorbing portion, the door frame body comprising two door panels and four narrow panels, the two door panels and the four narrow panels forming a closed space, characterized in that: A sound scattering plate is arranged in the door frame body, and the four sides of the sound scattering plate are respectively fixedly connected to the four narrow plates, the sound scattering plate is parallel to the door plate, the sound absorbing part is arranged between the sound scattering plate and the door plate, the sound absorbing part fills the space between the sound scattering plate and the door plate, the sound absorbing part is arranged on both sides of the sound scattering plate, and a V-shaped groove is arranged on the side of the sound scattering plate.

2. The soundproof door panel based on the V-groove structure according to claim 1 is characterized in that: The V-shaped grooves are arranged on both side surfaces of the sound diffusion plate, the V-shaped grooves on the two side surfaces of the sound diffusion plate are arranged alternately, and the V-shaped grooves on the two side surfaces of the sound diffusion plate do not penetrate each other.

3. The soundproof door panel based on the V-groove structure according to claim 2 is characterized in that: The depth of the V-shaped groove is greater than half of the thickness of the sound diffusion plate.

4. The soundproof door panel based on the V-groove structure according to claim 3 is characterized in that: The V-shaped groove has a groove angle of 30° to 120°.

5. The soundproof door panel based on the V-groove structure according to claim 4 is characterized in that: The extending directions of the V-shaped grooves are parallel to each other and are parallel to the direction of the long sides of the narrow plates with shorter lengths.

6. The soundproof door panel based on the V-groove structure according to claim 5 is characterized in that: The sound diffusion plate is equidistant from the two door panels.

7. The soundproof door panel based on the V-groove structure according to any one of claims 1 to 6, characterized in that: The sound absorbing part is provided with a sound scattering structure, and the material of the sound scattering structure is plastic.

8. The soundproof door panel based on the V-groove structure according to claim 1, characterized in that: The material of the sound absorbing part is one of porous foam, asbestos, glass wool and carbon fiber.

9. The soundproof door panel based on the V-groove structure according to claim 1, characterized in that: The material of the sound diffusion board is one of vinyl board, polyethylene board and plastic foam board.

10. The soundproof door panel based on the V-groove structure according to claim 1, characterized in that: The door panel and the narrow board are made of hard wood.

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