Sound waveguide structure

Abstract

The utility model relates to the technical field of sound equipment waveguides, in particular to a sound equipment waveguide structure, which comprises a sound transmission shell, a sound expansion shell is arranged on one side of the sound transmission shell, a corrugated channel is arranged in the sound transmission shell, and a conical channel is arranged in the sound expansion shell. The sound transmission shell and the sound expansion shell form a shell structure of a sound waveguide structure, the sound transmission shell is of a corrugated structure, and the sound expansion shell is of a horn structure, so that when sound is transmitted, the sound transmission path can be increased, and sound is amplified and released from narrow to wide through a sound transmission space; the sound transmission shell and the sound expansion shell are in butt joint through a threaded column and a built-in sleeve, rapid assembly can be achieved, stable fastening can be achieved through mutual threaded butt joint of a threaded cap and the threaded column, and therefore the sound transmission quality can be improved when the sound transmission shell and the sound expansion shell are actually needed. And the sound expansion shell and the sound transmission shell in different forms are assembled and matched for use.

Description

TECHNICAL FIELD

[0001] The utility model relates to sound waveguide technical field, especially sound waveguide structure. BACKGROUND

[0002] The sound waveguide structure is a design for improving the acoustic performance of sound equipment. It guides sound waves to propagate in a specific way, thereby improving sound quality, enhancing low-frequency response, or achieving other acoustic optimization effects.

[0003] The waveguide structure can control the propagation path of sound waves, reduce the loss and distortion of sound waves during propagation, and optimize the frequency response of sound equipment by designing a specific shape and size of the waveguide, especially in the low-frequency band. For example, the prior art Chinese patent publication "CN220173368U" provides a convenient-to-assemble sound structure, which includes: a housing including a housing main body and a bearing plate; the bearing plate includes a first plate body and a second plate body; the first plate body has a first through hole in the middle, and the second plate body has a second through hole in the middle; and a loudspeaker assembly mounted in the housing; the loudspeaker assembly includes a waveguide tube, a first loudspeaker, a second loudspeaker, and a horn; the horn is fixedly connected to the first plate body, and the second loudspeaker is fixedly connected to the second plate body; the waveguide tube is used to pass through the first through hole, and the second loudspeaker is used to pass through the second through hole. The above-mentioned convenient-to-assemble sound structure has a simple structure and is easy to assemble. The use of an integrally formed housing can reduce the number of parts, the first plate body is used to fixedly install the waveguide tube and the first loudspeaker, and the second plate body is used to fixedly install the second loudspeaker, thereby simplifying the assembly process, saving assembly time and labor, and reducing the number of joints, thereby improving the overall stability and durability of the sound.

[0004] At present, most large sound playing devices are applied to some commercial performances, and technicians will adjust or replace the sound transmission structure inside the sound according to the size of the site. The sound amplification structure is usually fixed by screws or welding. When replacing, the whole needs to be disassembled, and the sound damping layer of part of the sound transmission structure is relatively single, and the effect of solving the sound resonance problem is not good, so a multi-layer composite structure needs to be designed to improve the sound damping effect. UTILITY MODEL CONTENT

[0005] The utility model aims at solving the above-mentioned shortcomings in the prior art and provides a sound waveguide structure.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0007] The utility model relates to an acoustic waveguide structure, including sound conveying shell, the one side of sound conveying shell is provided with sound expansion shell, the inside of sound conveying shell is corrugated channel, the inside of sound expansion shell is tapered channel, and the tapered channel is communicated with corrugated channel arrangement,

[0008] The end of the sound conveying shell away from the sound expansion shell is provided with a plurality of mounting plates, one end of the mounting plate is welded to the end face of the sound conveying shell, the plurality of mounting plates are annularly surrounded on the outer wall of the sound conveying shell, and mounting holes penetrating the inside of the mounting plate are formed in the surface of the mounting plate.

[0009] The upper and lower ends of the outer wall of the sound conveying shell are respectively provided with abutment plates, one end of the abutment plate is attached to the surface of the sound conveying shell, an inbuilt sleeve is penetratingly arranged on the surface of the abutment plate, the abutment position of the inbuilt sleeve and the abutment plate is fixed by welding, a threaded column is arranged at the end of the sound expansion shell close to the sound conveying shell, one end of the threaded column is fixedly welded to the end face of the sound expansion shell, the surface of the threaded column penetrates the inside of the inbuilt sleeve, and a threaded cap is threadedly connected to the end of the threaded column, and the end face of the threaded cap is tightly arranged on one side of the inbuilt sleeve.

[0010] In detail, the sound conveying shell is sequentially provided with an outer layer, a sound damping layer one, a sound damping layer two, a sound damping layer three and a sound damping layer four from outside to inside, the sound damping layer one is fixedly bonded to the inner side of the outer layer by resin, the sound damping layer two is fixedly bonded to the inner side of the sound damping layer one by resin, the sound damping layer three is fixedly bonded to the inner side of the sound damping layer two by resin, the sound damping layer four is coated on the inner side of the sound damping layer three, and the sound expansion shell has the same structure as the sound conveying shell.

[0011] In detail, the outer layer is made of aluminum alloy material.

[0012] In detail, the sound damping layer one is made of foam material.

[0013] In detail, the sound damping layer two is made of mineral wool material.

[0014] In detail, the sound damping layer three is made of polyurethane material.

[0015] In detail, the sound damping layer four is made of rubber coating material.

[0016] The design scheme of the utility model has the beneficial effects in the application process, which are as follows:

[0017] 1. The shell structure formed by the sound conveying shell and the sound expanding shell forms an acoustic waveguide structure, the sound conveying shell is a corrugated structure, and the sound expanding shell is a horn structure, which can increase the path of sound transmission and release the sound by expanding the transmission space from narrow to wide, thereby improving the propagation quality of the sound, the sound conveying shell and the sound expanding shell are connected to each other through a threaded column and an inner sleeve, and the threaded cap and the threaded column are screwed to each other, so that the sound expanding shell and the sound conveying shell can be assembled and used in different forms as needed.

[0018] 2. The sound conveying shell and the sound expanding shell have the same structure, and the outer layer is made of aluminum alloy material for strength support, and four groups of sound damping layer structures are arranged inside, which can maximize the damping and stability of the sound when passing through, and reduce the resonance effect with the shell, thereby ensuring the quality of sound transmission when transmitting sound. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a whole front structure schematic view of the utility model;

[0020] Figure 2 It is a whole overhead structure schematic view of the utility model;

[0021] Figure 3 It is an enlarged schematic view of A of the utility model;

[0022] Figure 4 It is a sound conveying shell structure composition schematic view of the utility model.

[0023] In the figure: 1, sound conveying shell; 11, sound expanding shell; 12, mounting plate; 13, mounting hole; 14, connecting plate; 15, inner sleeve; 16, threaded column; 17, threaded cap; 1001, outer layer; 1002, sound damping layer one; 1003, sound damping layer two; 1004, sound damping layer three; 1005, sound damping layer four. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all.

[0025] Referring to Figures 1-4 An acoustic waveguide structure comprises a sound conveying shell 1, the sound conveying shell 1 is provided with a sound expanding shell 11 on one side, the inside of the sound conveying shell 1 is a corrugated channel, the inside of the sound expanding shell 11 is a tapered channel, and the tapered channel is in communication with the corrugated channel.

[0026] The sound conveying shell 1 is provided with a plurality of mounting plates 12 at one end away from the sound expanding shell 11, one end of the mounting plate 12 is welded to the end face of the sound conveying shell 1, and a plurality of mounting plates 12 are annularly surrounded on the outer wall of the sound conveying shell 1, and the surface of the mounting plate 12 is provided with a mounting hole 13 penetrating the inside thereof;

[0027] The outer wall of the sound conveying shell 1 is provided with an adapter plate 14 at both ends, one end of the adapter plate 14 is attached to the surface of the sound conveying shell 1, and the surface of the adapter plate 14 is provided with an internal sleeve 15, the adapter position of the internal sleeve 15 and the adapter plate 14 is fixed by welding, the sound expanding shell 11 is provided with a threaded column 16 at one end close to the sound conveying shell 1, one end of the threaded column 16 is fixedly welded to the end face of the sound expanding shell 11, the surface of the threaded column 16 penetrates the inside of the internal sleeve 15, and the end of the threaded column 16 is threadedly connected with a threaded cap 17, and the end face of the threaded cap 17 is tightly arranged on one side of the internal sleeve 15.

[0028] It should be further explained that the sound conveying shell 1 is provided with an outer layer 1001, a sound damping layer one 1002, a sound damping layer two 1003, a sound damping layer three 1004, and a sound damping layer four 1005 from outside to inside, the inner side of the outer layer 1001 is fixedly connected with the sound damping layer one 1002 by resin glue, the inner side of the sound damping layer one 1002 is fixedly connected with the sound damping layer two 1003 by resin glue, the inner side of the sound damping layer two 1003 is fixedly connected with the sound damping layer three 1004 by resin glue, the inner side of the sound damping layer three 1004 is coated with the sound damping layer four 1005, and the structure of the sound expanding shell 11 is the same as that of the sound conveying shell 1.

[0029] It should be further explained that the outer layer 1001 is made of aluminum alloy material, a dense oxide film can be easily formed on the surface of the aluminum alloy, which can protect the internal metal from corrosion, the aluminum alloy can obtain high strength through alloying and heat treatment, and the aluminum alloy has good ductility and plasticity and can be easily processed into various shapes.

[0030] It should be further explained that the sound damping layer one 1002 is made of foam material, the inside of the foam material is full of bubbles, which can effectively absorb sound wave energy, reduce reflection and resonance, improve sound quality, reduce noise pollution, the foam material has a high internal friction factor, which can effectively suppress vibration and resonance, the foam material has good cuttability and formability, and can be processed into various shapes and sizes according to needs, and high-quality foam material has good aging resistance, ultraviolet resistance and chemical corrosion resistance.

[0031] It should be further explained that the sound damping layer two 1003 is made of mineral wool material, the internal structure of which is fluffy, and the fibers are interwoven to form a large number of small voids, which can effectively absorb sound wave energy, reduce reflection and resonance, improve sound quality, reduce noise pollution, and the mineral wool material has a high melting point and fire resistance, which can maintain stable physical and chemical properties in high temperature environment, and is suitable for sound absorption and heat insulation in high temperature environment.

[0032] It should be further explained that the sound damping layer three 1004 is made of polyurethane material, which has a high internal friction factor and can effectively suppress vibration and resonance, and the internal structure of the polyurethane material is fluffy, and the fibers are interwoven to form a large number of small voids, which can effectively absorb sound wave energy, reduce reflection and resonance, improve sound quality, reduce noise pollution, and the polyurethane material has good elasticity and flexibility, which can adapt to various complex working environments.

[0033] It should be further explained that the sound damping layer four 1005 is made of rubber coating material, which has a high internal friction factor and can effectively suppress vibration and resonance, and the rubber coating has good elasticity and flexibility, which can adapt to various complex working environments, improve the durability and service life of the material, and the rubber coating has good acid, alkali and salt corrosion resistance.

[0034] Working mode: the sound conveying shell 1 and the sound expanding shell 11 form a shell structure of an acoustic waveguide structure, the sound conveying shell 1 is a corrugated structure, and the sound expanding shell 11 is a horn structure, which can increase the path of sound transmission and release the sound by expanding the transmission space from narrow to wide, thereby improving the propagation quality of the sound, the sound conveying shell 1 and the sound expanding shell 11 are connected by the threaded column 16 and the built-in sleeve 15, which can realize quick assembly, and the threaded cap 17 and the threaded column 16 are screwed to each other, which can realize stable fastening, so that different forms of sound expanding shell 11 and sound conveying shell 1 can be assembled and used as needed.

[0035] The sound conveying shell 1 and the sound expanding shell 11 have the same structure, and the outer layer 1001 made of aluminum alloy material is used for strength support, and four groups of sound damping layer structures are arranged inside, which can maximize the damping and stability of the sound when the sound passes through, and reduce the resonance effect with the shell, thereby ensuring the quality of sound transmission. The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. An acoustic waveguide structure comprising a sound transport enclosure (1), characterised in that: The sound conveying shell (1) is provided with a sound expansion shell (11) on one side, the inside of the sound conveying shell (1) is a corrugated channel, the inside of the sound expansion shell (11) is a tapered channel, and the tapered channel is in communication with the corrugated channel; A plurality of mounting plates (12) are arranged at the end of the sound conveying shell (1) away from the sound expansion shell (11), one end of the mounting plate (12) is welded to the end face of the sound conveying shell (1), the plurality of mounting plates (12) are annularly surrounded on the outer wall of the sound conveying shell (1), and a mounting hole (13) penetrating the inside of the mounting plate (12) is formed in the surface of the mounting plate (12). The sound conveying shell (1) is provided with an adapter plate (14) at the upper end and the lower end of the outer wall, one end of the adapter plate (14) is attached to the surface of the sound conveying shell (1), a built-in sleeve (15) is arranged on the surface of the adapter plate (14), the adapter position of the built-in sleeve (15) and the adapter plate (14) is fixed by welding, a threaded column (16) is arranged at the end of the sound expansion shell (11) close to the sound conveying shell (1), one end of the threaded column (16) is fixedly connected to the end face of the sound expansion shell (11), the surface of the threaded column (16) penetrates the inside of the built-in sleeve (15), and a threaded cap (17) is threadedly connected to the end of the threaded column (16), and the end face of the threaded cap (17) is tightly arranged on one side of the built-in sleeve (15).

2. A sound waveguide structure according to claim 1, wherein: The sound conveying shell (1) is provided with an outer layer (1001), a sound damping layer one (1002), a sound damping layer two (1003), a sound damping layer three (1004), and a sound damping layer four (1005) from outside to inside, the inner side of the outer layer (1001) is fixedly connected with the sound damping layer one (1002) by resin adhesive, the inner side of the sound damping layer one (1002) is fixedly connected with the sound damping layer two (1003) by resin adhesive, the inner side of the sound damping layer two (1003) is fixedly connected with the sound damping layer three (1004) by resin adhesive, the inner side of the sound damping layer three (1004) is coated with the sound damping layer four (1005), and the structure of the sound expansion shell (11) is the same as that of the sound conveying shell (1).

3. A sound waveguide structure according to claim 2, wherein: The outer layer (1001) is made of aluminum alloy material.

4. A sound waveguide structure according to claim 2, wherein: The sound damping layer one (1002) is made of foam material.

5. A sound waveguide structure according to claim 2, wherein: The sound damping layer two (1003) is made of mineral wool material.

6. The acoustic waveguide structure of claim 2, wherein: The sound damping layer three (1004) is made of polyurethane material.

7. The acoustic waveguide structure of claim 2, wherein: The sound damping layer four (1005) is made of rubber coating material.

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