A high sound insulation performance through-wall cable sound shield

Abstract

This utility model discloses a high-performance sound insulation cover for through-wall cables in the field of sound insulation and noise reduction technology. Through a multi-layered integrated structure, it achieves a balance between acoustic performance, structural reliability, and ease of use. First, the overall structure adopts a modular architecture, integrating sound insulation panels, sealing components, and connecting structures to form a complete multi-layered barrier system. In terms of sound insulation mechanism, the differential thickness of the sound insulation panel and the sound insulation middle plate, along with the synergistic effect of composite materials, effectively disperses the influence of the coincidence effect, achieving high-efficiency sound insulation over a wide frequency range. In terms of structural treatment, the sealing design can eliminate the sound bridge effect and gap leakage in traditional sound insulation structures, ensuring the continuity of overall sound insulation performance. In terms of functionality, convenient operating parts and installation methods greatly improve work efficiency, achieving wide-frequency noise reduction, long-term sealing, and corrosion resistance, thus solving the technical problem of sound leakage from through-wall cables.

Description

Technical Field

[0001] This utility model relates to the field of sound insulation and noise reduction technology, and in particular to a soundproof cover for through-wall cables with high sound insulation performance. Background Technology

[0002] With the rapid development of modern industry, transportation, and the acceleration of urbanization, the number of various machines and transportation vehicles has increased dramatically. Furthermore, to improve productivity, their power output has also increased, leading to increasingly serious urban environmental pollution, primarily caused by industrial and traffic noise. This noise damages the living environment, harms human health, and affects normal work and production activities. Noise has become one of the most significant public hazards today, following water and air pollution. Studying the pollution patterns of noise, identifying its causes, and effectively controlling and managing noise have become increasingly urgent requirements. In engineering projects, vibration isolation, sound insulation, sound absorption, and noise reduction measures are generally adopted to control noise, often focusing on controlling the noise source and blocking the noise transmission path.

[0003] A soundproof enclosure is a structure that uses sound insulation and sound absorption technologies to reduce noise. It encloses the noise source within a relatively small space using a soundproof structure, and then uses internal sound-absorbing materials or sound-attenuating structures to reduce noise. A soundproof enclosure generally consists of a cover panel, a damping coating, a sound-absorbing layer, and a protective panel. The appropriate type of soundproof enclosure can be selected based on the specific requirements of the noise source equipment's operation, installation, maintenance, cooling, and ventilation. Commonly used soundproof enclosures include fixed sealed types and movable sealed types.

[0004] However, existing technologies have some problems: soundproof enclosures for through-wall cables are rarely used. Since cables pass through walls to connect indoors and outdoors, holes need to be made in the walls. The gap between the cable and the hole wall will cause noise leakage. Because the diameter of the through-wall holes is generally small, it is difficult to perform appropriate structural sealing. In engineering, sound-absorbing cotton or foam is usually filled into the gaps inside the holes. However, these two materials are more inclined to absorb high-frequency sound waves than to block sound transmission, and their effect on low-frequency noise and structural vibration transmission is limited. At the same time, the low density and elasticity of the materials themselves are not effective in blocking sound wave penetration. These materials alone cannot completely solve the sound leakage problem, nor can they solve the problem of sound leakage through the holes. Moreover, since the outside of the holes is directly exposed to the outdoors, the gaps in the holes will cause problems such as water accumulation, corrosion of the filling materials, and damage from insects and rodents. For fields with high sound insulation and sealing requirements, soundproof enclosures or through-wall sealing components are often used. However, the sound insulation performance of existing soundproof enclosures is generally average and not suitable for fields with high sound insulation requirements. Therefore, we propose a high-sound-insulation through-wall cable soundproof enclosure. Utility Model Content

[0005] To address the shortcomings of existing technologies, the present invention aims to provide a high-performance sound insulation cover for through-wall cables, comprising a frame. The main body of the frame is welded from square tubing. A sound insulation panel is fixedly installed on the outer side of the frame, and a sound insulation middle plate is provided inside the frame. The sound insulation middle plate is used for internal sound insulation and internal layering within the frame. A pair of sound insulation doors are provided on the front of the frame. The sound insulation panel and the sound insulation middle plate are arranged in a multi-layer sound insulation structure. The sound insulation panel and the sound insulation doors are arranged correspondingly. Sealing corner pieces are provided at the joint between the sound insulation panel and the sound insulation doors. The sealing corner pieces are used to fill gaps and provide elastic compression. A support base is provided on the sound insulation panel at the lower end of the frame.

[0006] Optionally, the soundproof panel and soundproof door are configured with a three-layer soundproof structure, which includes a soundproof steel plate, glass wool and a perforated plate, and the surface of the soundproof steel plate is treated with anti-corrosion spraying.

[0007] Optionally, an adhesive is applied between the sound-insulating steel plate, glass wool, and perforated plate of the three-layer sound insulation structure to fill tiny gaps, and the three-layer sound insulation structure adopts an integrated process.

[0008] Optionally, the sound insulation middle plate is a five-layer sound insulation structure, which includes a perforated plate, glass wool, sound insulation steel plate, glass wool and perforated plate in sequence, and the five-layer sound insulation structure is processed by a layered pre-coating film process.

[0009] Optionally, a hinge is provided between the soundproof door and the frame, the sealing corner piece has an L-shaped cross-section, a soundproof rib is provided on the inner side of the sealing corner piece, and the sealing corner piece is connected to the soundproof panel by a pre-embedded buckle.

[0010] Optionally, the soundproof door is provided with a pull ring handle, the pull ring handle includes a handle base, the handle base is fixedly connected to the soundproof door, the handle base is provided with a rubber pad, and a movable pull ring is hinged to the handle base.

[0011] Optionally, the sound insulation panel is embedded with a sealing cap, which may include a double-hole cap and a three-hole cap. A cable passes through the sealing cap, and the sealing cap is used to fill the gap between the cable and the sound insulation panel to block sound transmission.

[0012] Optionally, the sealing cap includes a basin body that fits into the sound insulation panel, and a rubber cap is provided inside the basin body.

[0013] Optionally, the rubber plug has a hollow area inside, and the inside of the rubber plug is filled with fiberglass insulation. The rubber plug is disposed corresponding to the basin body, and a through hole is provided on the rubber plug for installing cables.

[0014] Optionally, a metal bushing is provided on the outside of the cable, the metal bushing is embedded in the wall, and a sealing rubber ring is provided between the metal bushing and the cable. The sealing rubber ring is located on both sides of the metal bushing and is used to seal the connection between the cable and the metal bushing.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: The embodiments provided by this utility model achieve a balance between acoustic performance, structural reliability, and ease of use through a multi-layered integrated structure. First, the overall structure adopts a modular architecture, integrating sound insulation panels, sealing components, and connecting structures to form a complete multi-layered barrier system. In terms of sound insulation mechanism, the differential thickness of the sound insulation panels and the sound insulation middle plate, along with the synergistic effect of composite materials, effectively disperses the influence of the coincidence effect, achieving high-efficiency sound insulation across a wide frequency band. In terms of structural treatment, the sealing design can eliminate the sound bridge effect and gap leakage in traditional sound insulation structures, ensuring the continuity of overall sound insulation performance. In terms of functionality, the convenient operating components and installation methods greatly improve work efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure provided by this utility model.

[0018] Figure 2 This is a partial structural diagram of the soundproof cover provided by this utility model.

[0019] Figure 3 This is a schematic diagram of the sound insulation panel structure of the sound insulation cover provided by this utility model.

[0020] Figure 4 This is a schematic diagram of the sound insulation cover and sound insulation middle plate structure provided by this utility model.

[0021] Figure 5 This is a cross-sectional schematic diagram of the double-hole plug structure of the soundproof cover provided by this utility model.

[0022] Figure 6 This is a schematic diagram of the metal bushing structure provided by this utility model.

[0023] Figure 7 This is a schematic diagram of the soundproof cover pull ring door handle structure provided by this utility model.

[0024] Figure 8This is a side sectional view of the soundproof cover provided by this utility model.

[0025] In the diagram: 1. Frame; 2. Sound insulation panel; 201. Sound insulation steel plate; 202. Glass wool; 203. Mesh panel; 3. Sound insulation middle plate; 4. Sound insulation door; 5. Sealing corner piece; 6. Support base; 7. Pull ring handle; 701. Handle base; 702. Rubber pad; 703. Movable pull ring; 8. Hinge; 9. Sealing plug; 901. Basin; 902. Fiberglass insulation; 903. Rubber plug; 10. Double-hole plug; 11. Three-hole plug; 12. Cable; 13. Metal bushing; 14. Sealing rubber ring. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] like Figures 1 to 8 The high sound insulation performance through-wall cable soundproof cover shown includes a frame 1. The main body of the frame 1 is made of welded square tubes. A sound insulation panel 2 is fixedly installed on the outside of the frame 1. A sound insulation middle plate 3 is set inside the frame 1. The sound insulation middle plate 3 is used for internal sound insulation and internal layering of the frame 1. A pair of soundproof doors 4 are set on the front of the frame 1. The sound insulation panel 2 and the sound insulation middle plate 3 are arranged in a multi-layer sound insulation structure. The sound insulation panel 2 and the soundproof door 4 are set accordingly. A sealing corner piece 5 is set at the splice of the sound insulation panel 2 and the soundproof door 4. The sealing corner piece 5 is used to fill the gap and provide elastic compression. A support base 6 is set on the sound insulation panel 2 at the lower end of the frame 1.

[0028] It should be noted that when the cable 12 is run through a hole in the wall, noise is mainly transmitted through three pathways: airborne sound: mid-to-high frequency noise leaks through the gap between the cable 12 and the hole; structural sound: equipment vibration transmits low-frequency solid sound through the outer sheath of the cable 12, which excites secondary radiation from the wall; and resonance noise: loose cable 12 is disturbed by airflow, causing cavity resonance, which amplifies noise in a specific frequency band.

[0029] For example, unsealed through-wall cables 12 in data centers can cause crosstalk in adjacent computer rooms, while power cables 12 in industrial workshops may transmit vibration noise, rendering the partition wall design ineffective.

[0030] It should be noted that the square tube used in the main body of frame 1 is a hollow metal rectangular tube, which reduces the overall mass while ensuring the strength of the structure. At the same time, the tube is filled with sound-absorbing material, which consumes vibration energy through internal friction and reduces the transmission of sound through the structure.

[0031] Furthermore, by setting the sound insulation middle plate 3, a multi-layer structure is formed inside the sound insulation cover, specifically, "sound insulation panel 2 - air layer - sound insulation middle plate 3 - air - sound insulation panel 2". The sound insulation effect is improved by disrupting the resonance transmission path of sound waves through the middle air layer.

[0032] Furthermore, in the soundproof enclosure structure, the soundproof middle plate 3 serves as the internal support frame. When external noise impacts the outer shell of the soundproof enclosure (soundproof panel 2), the sound pressure is converted into panel vibration. The vibration is transmitted through the structure and radiates noise. The soundproof middle plate 3 decomposes the sound pressure into two parts, one part is borne by the outer shell (soundproof panel 2), and the other part is borne by the middle plate, reducing the vibration amplitude of the single-layer structure. By utilizing the impedance mismatch of the double-layer structure, vibration transmission is reduced.

[0033] Furthermore, the sound insulation plate 3 is fixedly connected to the frame 1 by welding or bolts to form the internal support frame 1, which is equivalent to adding reinforcing ribs to the shell structure, improving the overall rigidity, reducing the overall vibration amplitude, and thus reducing the propagation of noise.

[0034] Specifically, the sound insulation panel 2 and the sound insulation door 4 are set with a three-layer sound insulation structure. The three-layer sound insulation structure includes a sound insulation steel plate 201, glass wool 202 and a perforated plate 203. Adhesive is applied between the sound insulation steel plate 201, glass wool 202 and perforated plate 203 of the three-layer sound insulation structure to fill the tiny gaps. The three-layer sound insulation structure adopts an integrated process, and the surface of the sound insulation steel plate 201 is treated with anti-corrosion spraying.

[0035] Furthermore, the sound-insulating steel plate 201 in the sound insulation panel 2 is a plate made of metal material, which reflects low-frequency sound waves through mass effect, and serves as a rigid shell of high surface density layer to resist external impact and maintain overall shape stability.

[0036] The glass wool has 202 layers and a porous fiber structure. It dissipates sound energy through viscous friction and heat conduction. For mid-to-high frequencies, its sound absorption coefficient can reach 0.9. It has the characteristics of damping vibration and can reduce the resonance amplitude of steel plates.

[0037] The perforated plate 203 serves as a protective sound-absorbing layer. It is 1.5mm thick with a 30% perforation rate and is arranged in an equilateral triangle pattern. This prevents the glass wool 202 fibers from falling off while allowing sound waves to enter the sound-absorbing layer. Based on the Helmholtz resonance-assisted sound absorption principle, it forms a resonant sound absorption peak, further enhancing mid-frequency sound insulation. Adhesive is applied and filled into the tiny gaps between the layers. An integrated molding process ensures a tight, secure structure, eliminating sound bridge effects, reducing airborne sound loss, and preventing delamination risks after long-term use.

[0038] Specifically, the sound insulation middle plate 3 is a five-layer sound insulation structure, which includes a perforated plate 203, glass wool 202, sound insulation steel plate 201, glass wool 202 and perforated plate 203 in sequence. The five-layer sound insulation structure is processed by a layered pre-coated adhesive film process.

[0039] Furthermore, the sound-insulating steel plate 201 in the middle of the sound-insulating middle plate 3 serves as the main plate, the glass wool 202 on both sides provides damping, and the perforated plate 203 provides auxiliary damping, thereby forming a symmetrical damping constraint structure to improve the sound insulation of mid-to-high frequencies.

[0040] Furthermore, by setting the sound insulation panel 2 as a three-layer sound insulation structure and the sound insulation middle plate 3 as a five-layer sound insulation structure, the thicknesses of the sound insulation panel 2 and the sound insulation middle plate 3 are inconsistent, and the coincidence valley frequencies are staggered to achieve full-band sound insulation optimization.

[0041] Specifically, a hinge 8 is provided between the soundproof door 4 and the frame 1, the sealing corner piece 5 has an L-shaped cross section, a soundproof rib is provided on the inner side of the sealing corner piece 5, and the sealing corner piece 5 is connected to the soundproof panel 2 by a pre-embedded buckle.

[0042] Furthermore, through the cooperation of L-shaped sealing corner piece 5 and pre-embedded buckle, the pre-embedded buckle connection method can avoid the structural weakening caused by traditional bolt perforation, ensure the continuity of sound insulation panel 2, and facilitate quick disassembly and maintenance, improve the sealing performance and structural stability of soundproof door 4. The L-shaped cross section can enhance the overall rigidity of the corner and suppress the transmission of door frame vibration. At the same time, the inner sound insulation rib further blocks the transmission of sound bridge and reduces sound leakage through gaps.

[0043] Specifically, the soundproof door 4 is equipped with a pull ring handle 7, which includes a handle base 701. The handle base 701 is fixedly connected to the soundproof door 4. A rubber pad 702 is provided on the handle base 701, and a movable pull ring 703 is hinged on the handle base 701.

[0044] Furthermore, firstly, the rubber pad 702 has the ability to absorb vibration energy between the handle and the door panel through elastic deformation, reducing the transmission of structural noise and avoiding secondary radiation noise caused by direct metal contact. Secondly, the rubber pad 702 can also seal the tiny gap between the handle seat 701 and the door panel, blocking the airborne sound leakage path and further enhancing the overall sound insulation effect.

[0045] Specifically, a sealing cap 9 is embedded in the sound insulation panel 2. The sealing cap 9 also includes a double-hole cap 10 and a three-hole cap 11. A cable 12 passes through the sealing cap 9. The sealing cap 9 is used to fill the gap between the cable 12 and the sound insulation panel 2 to block sound transmission. The sealing cap 9 includes a basin 901, which is fitted into the sound insulation panel 2. A rubber cap 903 is provided inside the basin 901. A hollow area is formed inside the rubber cap 903. The rubber cap 903 is filled with fiberglass insulation cotton 902. The rubber cap 903 is correspondingly arranged with the basin 901. A through hole is opened on the rubber cap 903 for installing the cable 12.

[0046] Furthermore, the configuration of the double-hole plug 10 and the triple-hole plug 11 can adapt to the needs of different numbers of cables 12, providing a flexible installation solution. The tight fit between the basin 901 and the sound insulation panel 2 forms the first sound insulation barrier, blocking the air transmission path at the panel openings.

[0047] The internal rubber plug 903 tightly wraps the cable 12 with elastic deformation, eliminating the tiny gaps between the cable 12 and the hole, reducing the sound bridge effect. The glass fiber cotton 902 filling forms a composite sound insulation layer. The porous structure of the glass fiber cotton 902 efficiently absorbs mid-to-high frequency sound waves, while the damping characteristics of the rubber suppress the transmission of low-frequency vibrations, achieving synergistic blocking of broadband noise.

[0048] Furthermore, the structure provided by this utility model not only ensures the integrity of the sound insulation panel 2, but also takes into account the convenience of cable 12 laying. On the one hand, the rubber material is resistant to aging and compression deformation, and can maintain stable sealing performance even after long-term use. On the other hand, the fiberglass cotton 902 is fireproof and moisture-proof, suitable for various harsh environments. Moreover, the overall design can be installed and maintained without additional tools, which significantly reduces the complexity of construction.

[0049] Specifically, a metal bushing 13 is provided on the outside of the cable 12. The metal bushing 13 is embedded in the wall. A sealing rubber ring 14 is provided between the metal bushing 13 and the cable 12. The sealing rubber ring 14 is located on both sides of the metal bushing 13 and is used to seal the connection between the cable 12 and the metal bushing 13.

[0050] Furthermore, the metal bushing 13 is embedded in the wall to form a rigid support, blocking the transmission of structural noise. The sealing rubber rings 14 set on both sides use their elastic deformation characteristics to tightly wrap the cable 12, which is used to seal the air gap between the cable 12 and the bushing and block the sound wave propagation path. Similarly, the damping characteristics of the rubber material can absorb the vibration energy of the cable 12 and prevent mechanical vibration from being transmitted to the wall through the metal bushing 13.

[0051] Furthermore, this double-sealing design can ensure the stability of the cable 12 installation and ensure that the overall sound insulation effect of the wall is not compromised, making it suitable for places with strict acoustic requirements. At the same time, the pre-embedded installation method of the metal bushing 13 simplifies the construction process.

[0052] Working Principle: The embodiments provided by this utility model achieve a balance between acoustic performance, structural reliability, and ease of use through a multi-layered integrated structure. First, the overall structure adopts a modular architecture, integrating the sound insulation panel 2, sealing components, and connecting structures to form a complete multi-layered barrier system. In terms of sound insulation mechanism, the differential thickness of the sound insulation panel and the sound insulation middle plate, along with the synergistic effect of the composite materials, effectively disperses the influence of the coincidence effect, achieving high-efficiency sound insulation across a wide frequency range. In terms of structural treatment, the sealing design can eliminate the sound bridge effect and gap leakage in traditional sound insulation structures, ensuring the continuity of overall sound insulation performance. In terms of functionality, convenient operating components and installation methods greatly improve work efficiency.

[0053] The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A high sound insulation performance through-the-wall cable acoustic enclosure comprising a frame (1), characterized in that: The main body of the frame (1) is made of square tube welded together. A sound insulation panel (2) is fixedly installed on the outside of the frame (1). A sound insulation middle plate (3) is set inside the frame (1). The sound insulation middle plate (3) is used for sound insulation inside the frame (1) and internal layering. A pair of sound insulation doors (4) are set on the front of the frame (1). The sound insulation panel (2) and the sound insulation middle plate (3) are set in a multi-layer sound insulation structure. The sound insulation panel (2) and the sound insulation door (4) are set in correspondence. A sealing corner piece (5) is set at the splice of the sound insulation panel (2) and the sound insulation door (4). The sealing corner piece (5) is used to fill the gap and provide elastic compression. A support base (6) is set on the sound insulation panel (2) at the lower end of the frame (1).

2. A high sound-insulation performance through-wall cable sound-insulation cover according to claim 1, characterized in that: The sound insulation panel (2) and the sound insulation door (4) are set as a three-layer sound insulation structure. The three-layer sound insulation structure includes a sound insulation steel plate (201), glass wool (202) and a perforated plate (203). The surface of the sound insulation steel plate (201) is treated with anti-corrosion spraying.

3. A high sound-insulation performance through-wall cable acoustic shield according to claim 2, characterized in that: The sound insulation steel plate (201), glass wool (202) and perforated plate (203) of the three-layer sound insulation structure are coated with adhesive to fill the tiny gaps. The three-layer sound insulation structure adopts an integrated process.

4. A high sound-insulation performance through-wall cable sound-insulation cover according to claim 1, characterized in that: The sound insulation middle plate (3) is a five-layer sound insulation structure, which includes a perforated plate (203), glass wool (202), sound insulation steel plate (201), glass wool (202) and perforated plate (203) in sequence. The five-layer sound insulation structure is processed by a layered pre-coated adhesive film process.

5. A high sound-insulation performance through-wall cable sound-insulation cover according to claim 1, characterized in that: A hinge (8) is provided between the soundproof door (4) and the frame (1). The sealing corner piece (5) has an L-shaped cross section. A soundproof rib is provided on the inner side of the sealing corner piece (5). The sealing corner piece (5) is connected to the soundproof panel (2) by a pre-embedded buckle.

6. A high sound-insulation performance through-wall cable acoustic shield according to claim 1, characterized in that: The soundproof door (4) is provided with a pull ring handle (7), the pull ring handle (7) includes a handle seat (701), the handle seat (701) is fixedly connected to the soundproof door (4), the handle seat (701) is provided with a rubber pad (702), and a movable pull ring (703) is hinged on the handle seat (701).

7. A high sound-insulation performance through-wall cable acoustic shield according to claim 1, characterized in that: The sound insulation panel (2) is embedded with a sealing plug (9), which also includes a double-hole plug (10) and a three-hole plug (11). A cable (12) passes through the sealing plug (9), and the sealing plug (9) is used to fill the gap between the cable (12) and the sound insulation panel (2) to block the transmission of sound.

8. A high-sound-insulation through-wall cable soundproof cover according to claim 7, characterized in that: The sealing plug (9) includes a basin (901), which is fitted with a sound insulation panel (2), and a rubber plug (903) is provided inside the basin (901).

9. A high sound-insulation performance through-the-wall cable acoustic shield according to claim 8, characterized in that: The rubber plug (903) has a hollow area inside, and the rubber plug (903) is filled with fiberglass cotton (902). The rubber plug (903) is correspondingly arranged with the basin (901). The rubber plug (903) has a through hole for installing cable (12).

10. A high sound-insulation performance through-the-wall cable acoustic shield according to claim 9, characterized in that: A metal bushing (13) is provided on the outside of the cable (12). The metal bushing (13) is embedded in the wall. A sealing rubber ring (14) is provided between the metal bushing (13) and the cable (12). The sealing rubber ring (14) is located on both sides of the metal bushing (13) and is used to seal the connection between the cable (12) and the metal bushing (13).

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