Sound absorption reflection structure

Abstract

The invention relates to the technical field of architectural acoustic design, and discloses a sound absorption and reflection structure which is convenient to install and simple in structure. The surface of the first sphere concentratedly reflects sound waves, a large amount of sound waves are reflected by the surface of the first sphere, part of unreflected sound waves enter the first sphere and are absorbed by sound-absorbing cotton in the first sphere, the sound waves unabsorbed by the sound-absorbing cotton are reflected by the second sphere, and the sound waves reflected to the sound-absorbing cotton in the first sphere are further reduced. Sound waves are repeatedly absorbed and reflected between the first sphere and the second sphere; meanwhile, due to the arrangement of the elastic structural part, the first ball body can slightly shake, the second ball body synchronously slightly acts in the first ball body, multi-angle reflection and absorption of sound wave energy are achieved through slow action of the second ball body, and a large amount of sound waves are repeatedly absorbed and reflected by the first ball body and the second ball body; the sound absorption reflection structure can balance high and low frequency sound absorption amount, adjust reverberation time and improve audience hearing.

Description

Technical Field

[0001] The invention relates to the technical field of architectural acoustic design, in particular to a sound-absorbing and reflecting structure. Background Art

[0002] There are usually many reflective panels on the top of a concert hall to adjust the direction of the sound and absorb excess harmonics, so that the audience can hear a cleaner sound with better reverberation. Usually, the reflective panels in a concert hall are divided into three parts: a top panel (or upper panel, upper panel), side panels (or side panels, side reflection towers) and a back panel (or back panel, back reflection tower). The top panel, side panels and back panel are usually stored in the back area of ​​the back stage, and the top panel is hung on the boom when in use. The side panels and back panels are stored in single pieces of varying heights at the back of the back stage or in other areas, and are pushed to the working position on the main stage when in use. The current reflective panels in concert halls have a relatively large low-frequency sound absorption, which results in low low-frequency reverberation during symphony performances, which in turn causes a decline in the quality of the audience's hearing. Summary of the invention

[0003] The purpose of the present invention is to provide a sound-absorbing and reflecting structure for solving the problem in the prior art that the low-frequency sound absorption of the concert hall reflector is relatively large, resulting in low low-frequency reverberation during performances, which reduces the hearing quality of the audience.

[0004] In order to achieve the above object, the embodiment of the present application provides a sound absorbing and reflecting structure, including:

[0005] a first sphere, wherein a first cavity is disposed in the first sphere;

[0006] A sound absorbing layer, covering the first cavity wall;

[0007] a second sphere disposed in the first cavity and abutting against the first cavity wall, the second sphere being able to move freely along the first cavity wall; and

[0008] The elastic structural member is arranged along the radial direction of the first sphere, and has a connecting end and a mounting end which are arranged opposite to each other. The connecting end is used to connect to the outer wall of the first sphere, and the mounting end is used to install the sound-absorbing and reflecting structure on a building.

[0009] In some embodiments of the present application, the first cavity is spherical, and the first cavity is concentrically arranged with the first sphere.

[0010] In some embodiments of the present application, the elastic structural member includes a connecting tube, and one end of the connecting tube close to the first sphere is connected to a rubber member, and the rubber member is connected to the outer wall of the first sphere;

[0011] A hanging piece is provided at one end of the connecting tube away from the first sphere, and the hanging piece is used to install the sound-absorbing and reflecting structure on a building.

[0012] In some embodiments of the present application, a first annular sheet and a second annular sheet are respectively provided along the axial ends of the rubber member, the first annular sheet is connected to the connecting tube, and the second annular sheet is connected to the outer wall of the first sphere.

[0013] In some embodiments of the present application, a through hole is provided along the axial direction of the rubber member, and the elastic structural member also includes a spring arranged radially along the first sphere, one end of the spring is connected to the top of the connecting tube, and the other end of the spring passes through the first annular sheet, the rubber member, and the second annular sheet in sequence and then is connected to the outer wall of the first sphere.

[0014] In some embodiments of the present application, the hanging member is a hanging ring fixedly mounted on an end of the connecting tube away from the first sphere.

[0015] In some embodiments of the present application, the sound absorbing layer is sound absorbing cotton.

[0016] In some embodiments of the present application, a spherical second cavity is provided in the second sphere, and the second cavity is arranged concentrically with the second sphere.

[0017] In some embodiments of the present application, the first sphere and the second sphere are both made of glass.

[0018] In some embodiments of the present application, the diameter of the second sphere is one third of the diameter of the first sphere.

[0019] Compared with the prior art, the sound-absorbing and reflecting structure of the embodiment of the present invention has the following beneficial effects: the sound-absorbing and reflecting structure in the present scheme is easy to install and has a simple structure; the surface of the first sphere reflects sound waves in a concentrated manner, a large number of sound waves are first reflected by the surface of the first sphere, and the part of the sound waves that cannot be reflected enters the interior of the first sphere and is absorbed by the sound-absorbing layer inside the first sphere, and the internal sound waves that cannot be absorbed by the sound-absorbing layer are reflected by the second sphere, and the sound waves reflected to the sound-absorbing cotton inside the first sphere are further reduced, so that the sound waves are repeatedly absorbed and reflected between the first sphere and the second sphere; at the same time, the setting of the elastic structural member enables the first sphere to produce a slight shake, and the second sphere to produce a slight shake synchronously in the first sphere, and the slow movement of the second sphere realizes multi-angle reflection and absorption of sound wave energy, a large number of sound waves are repeatedly absorbed by the first sphere and the second sphere, and excess harmonics are reflected, so that the sound-absorbing and reflecting structure can balance the high and low frequency sound absorption, adjust the reverberation time, and make full use of limited natural sound energy, and no sound amplification equipment is required to avoid sound distortion, so that the audience can enjoy the original top concert. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of the sound-absorbing and reflecting structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the disassembled state of the elastic structural member of the present invention;

[0022] Figure 3 This is a schematic diagram of the structure of the first sphere and the connecting tube after cross-section of the present invention;

[0023] Figure 4 It is a schematic diagram of the cross-section structure of the first sphere and the second sphere of the present invention;

[0024] Figure 5 For the present invention Figure 4 A schematic diagram of the structure enlargement in the middle;

[0025] Figure 6 It is a schematic diagram of the state when the first sphere and the second sphere of the present invention are slightly shaking.

[0026] In the figure, 1, the first sphere; 2, the second sphere; 3, the elastic structural member; 31, the connecting tube; 32, the first annular sheet; 33, the rubber member; 34, the second annular sheet; 35, the tube cavity; 4, the spring; 5, the hanging ring; 6, the sound-absorbing layer. DETAILED DESCRIPTION

[0027] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0028] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. It should be understood that the terms "first", "second", etc. are used in the present invention to describe various information, but such information should not be limited to these terms, which are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information.

[0029] like Figure 1-Figure 6As shown, an embodiment of the present application proposes a sound-absorbing and reflecting structure, including a first sphere 1, in which a first cavity is provided; a sound-absorbing layer 6, which covers the wall of the first cavity and completely covers the wall of the first cavity; a second sphere 2, which is provided in the first cavity and in direct contact with the wall of the first cavity, and the second sphere 2 can move freely along the wall of the first cavity in the first cavity. Specifically, the second sphere 2 is directly placed in the first cavity without any connection measures, so that when the second sphere 2 is slightly shaken, the second sphere 2 can move freely along the wall of the first cavity; and an elastic structural member 3, which is arranged along the radial direction of the first sphere 1, and the elastic structural member 3 has a connecting end and a mounting end which are relatively arranged, the connecting end is used to connect to the outer wall of the first sphere 1, and the mounting end is used to install the sound-absorbing and reflecting structure on a building (such as above the stage or the top of the concert hall above the stage).

[0030] In the specific operation of this embodiment, when there is music in the concert hall, the sound waves are transmitted to the surface of the first sphere 1 and most of the sound waves are reflected by the surface of the first sphere 1. The part of the sound waves that cannot be reflected enters the first sphere 1 and is absorbed by the sound-absorbing layer 6 covering the wall of the first cavity. The small part of the sound waves that cannot be absorbed by the sound-absorbing layer 6 is reflected by the surface of the second sphere 2, so that the part of the sound waves is reflected on the sound-absorbing layer 6 on the wall of the first cavity, and is further absorbed by the sound-absorbing layer 6 (the energy of the part of the sound waves is further reduced by the sound-absorbing layer 6); at the same time, the setting of the elastic structural member 3 enables the first sphere 1 to produce a certain degree of slight shaking when it is affected by the sound waves. As the first sphere 1 shakes, the second sphere 2 in the first cavity A certain degree of relative movement is generated internally and synchronously, and the second sphere 2 moves slightly in the first cavity, so that the sound waves penetrating the sound-absorbing layer 6 can contact and reflect at different positions on the surface of the second sphere 2 (reflected on the sound-absorbing layer 6 again), and can realize multi-angle reflection and absorption of sound wave energy; as a result, a large number of sound waves are repeatedly absorbed and reflected by the first sphere 1 and the second sphere 2 (the first sphere 1 adjusts the reflection angle of the sound wave, and the first sphere 1 and the second sphere 2 adjust the direction of the sound as a whole), so that the sound-absorbing and reflecting structure has the effects of sound absorption and reflection at the same time; thereby, the sound-absorbing and reflecting structure can balance the high and low frequency sound absorption, adjust the reverberation time, and make full use of the limited natural sound energy without using amplification equipment to avoid sound distortion.

[0031] In some embodiments of the present application, Figure 3As shown, the first cavity in the present scheme is set to be spherical, and the first cavity is set concentrically with the first sphere 1; so that when the first sphere 1 shakes slightly under the action of sound waves, the second sphere 2 can more easily produce synchronous movement in the first cavity, and because the first cavity is set to be spherical, the movement of the second sphere 2 in the first cavity is smoother, so that the sound waves can contact and be reflected from as many parts of the surface of the second sphere 2 as possible, thereby improving the reflection effect of the sound waves (the adjustment range of the sound direction is larger); the first cavity is set to be concentric with the first sphere 1, so that the force on the first sphere 1 is more balanced under the action of sound waves.

[0032] In some embodiments of the present application, Figure 2 As shown, the elastic structural member 3 includes a connecting tube 31, and a rubber member 33 is connected to one end of the connecting tube 31 close to the first sphere 1, and the rubber member 33 is connected to the outer wall of the first sphere 1; a hanging member is provided at one end of the connecting tube 31 away from the first sphere 1, and the hanging member is used to install the sound-absorbing and reflecting structure on a building (such as above the stage or the top of the concert hall above the stage); during the specific installation, a bearing frame for hanging the sound-absorbing and reflecting structure can be provided above the stage, and the hanging member can be installed and hung on the bearing frame, so as to achieve the effect of hanging the sound-absorbing and reflecting structure above the stage; or a hook matching with the hanging member is provided on the top of the concert hall above the stage, and the sound-absorbing and reflecting structure is installed on the top of the concert hall by hanging the hanging member on the hook; the first sphere 1 and the connecting tube 31 are connected via the rubber member 33, and the rubber member 33 has a certain elasticity. When the first sphere 1 is affected by sound waves, the rubber member 33 can produce a certain amplitude of slight deformation to meet the effect of slight shaking of the first sphere 1.

[0033] In some embodiments of the present application, Figure 5 As shown, a first annular sheet 32 ​​and a second annular sheet 34 are respectively provided along the axial ends of the rubber member 33, the first annular sheet 32 ​​is connected to the connecting tube 31 (the first annular sheet 32 ​​and the second annular sheet 34 are both made of iron material, and the first annular sheet 32 ​​and the connecting tube 31 are connected by welding), and the second annular sheet 34 is connected to the outer wall of the first sphere 1 (the second annular sheet 34 and the outer wall of the first sphere 1 can be bonded together by gluing); the first annular sheet 32, the second annular sheet 34 and the rubber member 33 are all connected by gluing.

[0034] In some embodiments of the present application, Figure 3 , Figure 4 , Figure 5As shown, a perforation is provided along the axial direction of the rubber member 33, and the elastic structural member 3 also includes a spring 4 arranged radially along the first sphere 1, one end of the spring 4 is connected to the top of the connecting tube 31 (a barrel cavity 35 extending along the axial direction of the connecting tube 31 is provided in the connecting tube 31, the top of the barrel cavity 35 is closed, and the bottom of the barrel cavity 35 passes through the connecting tube 31 and is connected to the perforation of the rubber member 33), and the other end of the spring 4 passes through the first annular sheet 32, the rubber member 33, and the second annular sheet 34 in sequence and then is connected to the outer wall of the first sphere 1; the provision of the spring 4 can improve the reliability of the connection to the first sphere 1, and at the same time does not prevent the first sphere 1 from being able to produce a slight shake (when the first sphere 1 produces a slight shake, the spring 4 will also produce a slight deformation).

[0035] In some embodiments of the present application, Figure 1 As shown, the hanging member is a hanging ring 5 fixedly mounted on the end of the connecting tube 31 away from the first sphere 1. The staff installs the sound-absorbing and reflecting structure above the stage or on the top of the concert hall above the stage through the hanging ring 5 (a hook cooperating with the hanging ring 5 is provided at the above position to facilitate disassembly and assembly). A hook cooperating with the hanging ring 5 can be set at the corresponding position, and the hanging ring is hung on the hook. The setting of the hanging ring enables the first sphere to sway to a certain extent with the hanging ring 5 as the fulcrum when it is affected by sound waves, thereby increasing the swaying amplitude of the first sphere 4, and then increasing the movement amplitude of the second sphere 5 in the first cavity, so as to improve the multi-angle reflection effect of the sound waves.

[0036] In some embodiments of the present application, the sound absorbing layer 6 in this solution is sound absorbing cotton.

[0037] In some embodiments of the present application, Figure 4 As shown, a spherical second cavity is provided in the second sphere 2 (making the second sphere 2 also a hollow structure, which is beneficial to weight reduction of the equipment), and the second cavity is concentrically arranged with the second sphere 2 (making the second sphere 2 move more smoothly in the first cavity). When the first sphere 1 shakes slightly, the second sphere 2 can easily move synchronously in the first cavity.

[0038] In some embodiments of the present application, the first sphere 1 and the second sphere 2 are both made of glass.

[0039] In some embodiments of the present application, the diameter of the second sphere 2 is one third of the diameter of the first sphere 1 .

[0040] The working process of the present invention is as follows: the staff installs the sound-absorbing and reflecting structure at the corresponding position through the hanging ring 5. When a music performance is performed, the sound waves first contact the outer wall of the first sphere 1 and are reflected in different directions by the first sphere 1. Part of the sound waves penetrate the second sphere 2 and enter the second cavity (in this process, the sound-absorbing layer 6 absorbs part of the sound waves). The sound waves not absorbed by the sound-absorbing layer 6 are transmitted to the surface of the second sphere 2 and are reflected by the second sphere 2 to the sound-absorbing layer 6, so that the sound waves are repeatedly reflected and absorbed between the first sphere 1 and the second sphere 2.

[0041] In summary, the embodiment of the present invention provides a sound-absorbing and reflecting structure. The sound-absorbing and reflecting structure in this solution is easy to install and has a simple structure. The surface of the first sphere 1 reflects sound waves intensively. A large number of sound waves are first reflected by the surface of the first sphere 1. After the part of the sound waves that cannot be reflected enters the interior of the first sphere 1, it is absorbed by the sound-absorbing cotton inside the first sphere 1. The internal sound waves that cannot be absorbed by the sound-absorbing cotton are reflected by the second sphere 2. The sound waves reflected to the sound-absorbing cotton inside the first sphere 1 are further reduced, so that the sound waves are repeatedly absorbed and reflected between the first sphere 1 and the second sphere 2. At the same time, the setting of the elastic structural member 3 enables the first sphere 1 to produce a slight shake, and the second sphere 2 to produce a slight shake synchronously in the first sphere 1. Through the slow movement of the second sphere 2, multi-angle reflection and absorption of sound wave energy are achieved. A large number of sound waves are repeatedly absorbed by the first sphere 1 and the second sphere 2, and excess harmonics are reflected, so that the sound-absorbing and reflecting structure can balance the high and low frequency sound absorption, adjust the reverberation time, and make full use of limited natural sound energy. There is no need to use amplification equipment to avoid sound distortion, so that the audience can enjoy the original top-level concert.

[0042] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A sound-absorbing and reflecting structure, characterized in that: include: A first sphere (1), wherein a first cavity is provided in the first sphere (1); A sound absorbing layer (6) covering the first cavity wall; a second sphere (2), disposed in the first cavity and abutting against the first cavity wall, wherein the second sphere (2) can move freely along the first cavity wall; and An elastic structural member (3) is arranged along the radial direction of the first sphere (1), and the elastic structural member (3) has a connecting end and a mounting end which are arranged opposite to each other, the connecting end is used to be connected to the outer wall of the first sphere (1), and the mounting end is used to mount the sound absorbing and reflecting structure on a building.

2. The sound-absorbing and reflecting structure according to claim 1, characterized in that: The first cavity is spherical, and the first cavity and the first sphere (1) are arranged concentrically.

3. The sound-absorbing and reflecting structure according to claim 1, characterized in that: The elastic structural member (3) comprises a connecting tube (31), one end of the connecting tube (31) close to the first sphere (1) is connected to a rubber member (33), and the rubber member (33) is connected to the outer wall of the first sphere (1); A hanging piece is provided at one end of the connecting tube (31) away from the first sphere (1), and the hanging piece is used to install the sound absorbing and reflecting structure on a building.

4. The sound-absorbing and reflecting structure according to claim 3, characterized in that: A first annular sheet (32) and a second annular sheet (34) are respectively provided along the axial ends of the rubber member (33); the first annular sheet (32) is connected to the connecting tube (31), and the second annular sheet (34) is connected to the outer wall of the first sphere (1).

5. The sound-absorbing and reflecting structure according to claim 1, characterized in that: A through hole is provided along the axial direction of the rubber member (33), and the elastic structural member (3) further comprises a spring (4) arranged along the radial direction of the first sphere (1), one end of the spring (4) is connected to the top of the connecting tube (31), and the other end of the spring (4) passes through the first annular sheet (32), the rubber member (33), and the second annular sheet (34) in sequence and is connected to the outer wall of the first sphere (1).

6. The sound-absorbing and reflecting structure according to claim 3, characterized in that: The hanging member is a hanging ring (5) fixedly mounted on an end of the connecting tube (31) away from the first sphere (1).

7. The sound-absorbing and reflecting structure according to claim 1, characterized in that: The sound absorbing layer (6) is sound absorbing cotton.

8. The sound-absorbing and reflecting structure according to claim 1, characterized in that: A spherical second cavity is provided inside the second sphere (2), and the second cavity is arranged concentrically with the second sphere (2).

9. The sound-absorbing and reflecting structure according to any one of claims 1 to 8, characterized in that: The first sphere (1) and the second sphere (2) are both made of glass.

10. The sound-absorbing and reflecting structure according to claim 1, characterized in that: The diameter of the second sphere (2) is one third of the diameter of the first sphere (1).

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