Assembled perforated sound-absorbing composite wall

Abstract

The utility model discloses a kind of assembled perforated sound-absorbing composite wall, including at least one composite wall assembly stack, with multiple composite wall assembly monomers arranged into multiple rows and multiple columns along the stack direction predefined for the stack, each of the composite wall assembly monomers includes the perforated panel layer arranged in the most front side, multiple perforated main bodies are opened in its inside;Perforated panel layer rear side multiple porous sound-absorbing material layer, support layer is arranged in porous sound-absorbing material layer rear side, screw rod rotates forward and drives bottom ring compression touch spring, reverse elastic force generated by spring will form sustained, uniform pressure to the rear side of the support layer of composite wall assembly monomer, force perforated panel layer, porous sound-absorbing material layer, support layer closely adhere, avoid interlayer due to vibration or temperature change produces gap;At the same time, the elastic property of spring can buffer external impact (such as collision, sound wave vibration), prevent interlayer cracking caused by rigid fixation.

Description

Technical Field

[0001] This utility model belongs to the technical field of perforated sound-absorbing composite walls, specifically relating to an assembled perforated sound-absorbing composite wall. Background Technology

[0002] Prefabricated perforated sound-absorbing composite wall panels are a type of modular acoustic wall system. The core of this system is its modular installation and composite sound-absorbing structure. Using prefabricated modules as units, it can be quickly assembled on-site without complex construction. The wall panel consists of perforated panels, sound-absorbing core material, and a back panel, forming a composite structure that combines perforation, sound absorption, and sound insulation. Sound waves enter the interior through the perforations and are absorbed and dissipated by the core material, reducing reflected noise. Simultaneously, the composite layer enhances sound insulation performance. It is commonly used in scenarios with high acoustic requirements, such as shopping malls, theaters, and computer rooms, and features convenient installation, controllable acoustic effects, and flexible maintenance.

[0003] Traditional composite walls often suffer from problems such as panel warping, sound-absorbing material sagging, and overall wall displacement due to weak interlayer fixing and uneven gaps between individual components. Utility Model Content

[0004] The purpose of this utility model is to provide a modular perforated sound-absorbing composite wall to solve the problems of traditional composite walls in the background art, such as panel warping, sound-absorbing material sagging, and overall wall displacement, which are often caused by poor interlayer fixing and uneven splicing gaps between individual units.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a modular perforated sound-absorbing composite wall, comprising at least one composite wall assembly stack, having multiple composite wall assembly units arranged in multiple rows and columns along a predefined stacking direction for the stack;

[0006] Each of the composite wall assembly units includes a perforated panel layer disposed at the frontmost side, which has multiple perforated bodies inside; a porous sound-absorbing material layer disposed at the rear side of the perforated panel layer; and a support layer disposed at the rear side of the porous sound-absorbing material layer.

[0007] Each of the composite wall assembly units includes connecting grooves opened at the four corners and a fixing assembly disposed inside the connecting grooves;

[0008] Multiple fixing assemblies extend along the four sides of each composite wall assembly unit to form an installation frame, and together with the installation frame, enclose each composite wall assembly unit.

[0009] In at least one composite wall assembly stack, when viewed from the front, the entire composite wall assembly stack is enclosed by the mounting frame, forming a plane on the front side.

[0010] Preferably, the fixing assembly includes a threaded rod, a bottom contact ring, a fixing ring, and a trigger spring, wherein the threaded rod and the bottom contact ring are fixedly connected at the middle of their front sides, the trigger spring is disposed on the outer side of the bottom of the threaded rod, and the outer side of the front side of the threaded rod is disposed inside the middle of the fixing ring.

[0011] Preferably, the threaded rod rotates in the middle of the fixed ring via the front external thread, completing the back-and-forth movement within the fixed ring.

[0012] Preferably, the threaded rod passes through the connecting groove of the composite wall assembly unit, the touch spring is located inside the rear side of the connecting groove, and the front and rear ends of the touch spring respectively press against the rear side of the connecting groove and the front side of the bottom ring. When the touch spring returns to its deformation, it applies pressure to the objects at the front and rear ends respectively.

[0013] Preferably, the front end of the threaded rod has a slit inside, which can be engaged with an external screwdriver. When the threaded rod is subjected to external force and rotates in the fixed ring and moves forward, it drives the bottom ring to move forward, further compressing the touch spring, and applying pressure to the composite wall assembly unit through the touch spring.

[0014] Preferably, when the threaded rod rotates in the fixed ring under external force and moves backward, it drives the bottom ring to move backward, further stretching the touch spring. The bottom ring applies pressure to the rear side of the composite wall assembly unit, abutting the composite wall assembly unit, thereby increasing the connection gap on the externally installed wall.

[0015] Preferably, in the composite wall assembly, the perforated panel layer, the porous sound-absorbing material layer, and the support layer are fixed by snap-fit ​​connection, and acoustic sealant is provided to fill all the joints between the layers.

[0016] Compared with the prior art, this utility model provides a modular perforated sound-absorbing composite wall, which has the following beneficial effects:

[0017] 1. When the threaded rod rotates forward, it drives the bottom ring to compress the touch spring. The reverse elastic force generated by the spring will form a continuous and uniform pressure on the rear side of the support layer of the composite wall assembly unit, forcing the perforated panel layer, porous sound-absorbing material layer and support layer to fit tightly together, avoiding gaps between layers due to vibration or temperature changes; at the same time, the elastic properties of the spring can buffer external impacts (such as collisions and sound wave vibrations) and prevent interlayer cracking caused by rigid fixation.

[0018] In addition, the mounting frame formed by multiple fixed assemblies extending along the four sides of the unit not only wraps the unit into a whole, but also forms a unified constraint boundary when multiple units are stacked, avoiding the problems caused by unit size errors in traditional stacking, ensuring the overall flatness of the wall, and enhancing the lateral force resistance of the stacked structure to prevent the stack from tipping over.

[0019] 2. The sound absorption effect of the composite wall relies on unobstructed perforation channels, no sound leakage between layers, and sealed splice seams. The threaded rods, bottom rings, and other components of the fixing assembly are all set in the connecting grooves at the four corners of the unit, rather than in the perforated area of ​​the perforated panel layer. This completely avoids the problem of traditional fasteners (such as screws that directly penetrate the panel) blocking the perforated body, ensuring that sound waves can smoothly pass through the perforations into the porous sound-absorbing material layer, and ensuring the synergistic effect of Helmholtz resonance sound absorption and porous material sound absorption.

[0020] In addition, the spring pressure ensures a tight fit between layers, which, together with the acoustic sealant at the interlayer joints, forms a dual sound-leakage prevention structure of elastic pressure and sealant, preventing sound waves from leaking from the gaps between layers. The design of the threaded rod rotating backward to stretch the spring and the bottom ring contacting the rear of the unit to increase the external installation gap can be used to address scenarios where the original wall is uneven. By adjusting the gap size to match the curvature of the original wall, and then filling with sealant, sound leakage between the wall and the unit caused by defects in the original wall can be avoided, ensuring that the sound insulation meets the standards. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the two composite wall assemblies stacked together in this utility model.

[0022] Figure 2 This is a schematic diagram of a single unit of the composite wall assembly in this utility model.

[0023] Figure 3 This is a schematic diagram showing the removal of the installation frame structure from the composite wall assembly unit in this utility model.

[0024] Figure 4 In this utility model Figure 2 A structural diagram from a side view.

[0025] Figure 5 In this utility model Figure 3 A structural diagram from a side view.

[0026] Figure 6 In this utility model Figure 1 A magnified structural diagram of the central circular region.

[0027] In the diagram: 1. Composite wall assembly; 2. Perforated panel layer; 3. Perforated body; 4. Mounting frame; 5. Fixing assembly; 6. Threaded rod; 7. Bottom ring; 8. Actuating spring; 9. Porous sound-absorbing material layer; 10. Support layer; 11. Connecting groove; 12. Fixing ring. Detailed Implementation

[0028] 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.

[0029] This utility model provides, for example Figure 1-5 The illustrated modular perforated sound-absorbing composite wall includes at least one stack of composite wall assemblies 1, having multiple individual composite wall assemblies 1 arranged in multiple rows and columns along a stacking direction predefined for the stack.

[0030] Each of the composite wall assembly 1 includes a perforated panel layer 2 located at the front, which has multiple perforated bodies 3 inside; a porous sound-absorbing material layer 9 located at the rear of the perforated panel layer 2; and a support layer 10 located at the rear of the porous sound-absorbing material layer 9.

[0031] Each composite wall assembly 1 includes a connecting groove 11 at the four corners and a fixing assembly 5 located inside the connecting groove 11;

[0032] Multiple fixed assemblies 5 extend along the four sides of each composite wall assembly 1 to form an installation frame 4, and together with the installation frame 4, enclose each composite wall assembly 1.

[0033] In at least one stack of composite wall assemblies 1, when viewed from the front, the entire stack of composite wall assemblies 1 is enclosed by the mounting frame 4, forming a plane on the front side.

[0034] In the composite wall assembly 1, the perforated panel layer 2, the porous sound-absorbing material layer 9, and the support layer 10 are fixed by snap-fit ​​connection. A splicing seam of 1 to 2 mm is reserved at the connection between the layers, and acoustic sealant is used to fill all the splicing seams between the layers to prevent sound leakage.

[0035] Optionally, the perforated panel layer 2 is the first sound-absorbing interface of the composite wall assembly unit. Its main function is to allow sound waves to enter the interior of the wall smoothly, and at the same time, it absorbs sound waves of a specific frequency band through the resonance effect of the perforated body 3 and the air layer.

[0036] The perforated panel layer 2 is made of lightweight, high-strength materials, such as perforated metal sheets, perforated gypsum boards, and perforated calcium silicate boards.

[0037] The perforation rate, pore diameter, and pore spacing of the perforated body 3 are adjusted according to the target sound absorption frequency band.

[0038] In addition, the perforated body 3 can be used as a decorative or protective surface of the wall, and it is also a channel for sound waves to enter the internal sound-absorbing structure. It absorbs part of the sound waves through the Helmholtz resonator principle (the perforation and the air layer behind it constitute a resonant unit).

[0039] Optionally, the porous sound-absorbing material layer 9 is the core of the wall's sound absorption performance. Through the pore structure inside the porous material, the incoming sound waves rub against the material fibers or pore walls, converting sound energy into heat energy and achieving broad-spectrum sound absorption.

[0040] The porous sound-absorbing material layer 9 is a porous flexible or semi-rigid material, such as centrifugal glass wool, rock wool, polyester fiber sound-absorbing cotton, open-cell foam plastic, etc.

[0041] The thickness and density of the material are adjusted according to specific sound absorption requirements.

[0042] The porous sound-absorbing material layer 9 receives the sound waves transmitted from the perforated panel layer 2. Through viscous friction and air compression and expansion effects, it absorbs mid-to-high frequency sound waves and assists in absorbing some mid-to-low frequency sound waves, thus compensating for the frequency limitation of the resonant sound absorption of the perforated panel layer 2.

[0043] The support layer 10 is the structural foundation of the wall. Its main functions are to fix the porous sound-absorbing material layer 9, provide structural support for the wall, and reduce the penetration of unabsorbed sound waves into the wall through the barrier effect of the dense material.

[0044] Materials can be selected such as non-porous metal sheets, gypsum boards, calcium silicate boards, cement pressure boards, etc.

[0045] Preferably, external sound waves enter from the perforated panel layer 2 and resonate with the air layer inside the perforated body 3 (initial sound absorption), penetrating to the porous sound-absorbing material layer (core sound absorption, sound energy is converted into heat energy). The remaining small amount of sound waves are reflected or blocked by the bottom support layer (reducing penetration), achieving a composite function of efficient sound absorption and certain sound insulation, suitable for scenarios with acoustic requirements such as concert halls, conference rooms, computer rooms, and offices.

[0046] In addition, within the composite wall assembly 1, the perforated panel layer 2, the porous sound-absorbing material layer 9, and the supporting layer 10 are fixed together using snap-fit ​​connections. Snap-fit ​​connections offer the advantages of easy installation and disassembly, allowing for quick assembly of the layers. Building upon these snap-fit ​​connections, to further enhance the sealing and overall integrity between layers, acoustic sealant is applied to fill all joints between the layers. This acoustic sealant not only fills the gaps in the joints, preventing sound leakage, but also strengthens the adhesion between the layers, making the composite wall more robust.

[0047] like Figure 1-5As shown, the fixing assembly 5 includes a threaded rod 6, a bottom contact ring 7, a fixing ring 12, and a trigger spring 8. The threaded rod 6 and the bottom contact ring 7 are fixedly connected at the front middle. The trigger spring 8 is located on the outer bottom of the threaded rod 6, and the outer front side of the threaded rod 6 is located inside the middle of the fixing ring 12. The threaded rod 6 rotates within the fixing ring 12 via its outer front thread, completing its back-and-forth movement within the fixing ring 12. The threaded rod 6 passes through the connecting groove 11 of the composite wall assembly 1 unit. The trigger spring 8 is located inside the rear side of the connecting groove 11, and its front and rear ends respectively press against the rear side of the connecting groove 11 and the front side of the bottom contact ring 7. When the trigger spring 8 returns to its original deformation, it... Do not apply pressure to the contacting objects at both ends. The front end of the threaded rod 6 has a slit inside, which can be engaged with an external screwdriver. When the threaded rod 6 is subjected to external force and rotates in the fixed ring 12, it moves forward, driving the bottom ring 7 to move forward, further compressing the contact spring 8. The contact spring 8 applies pressure to the composite wall assembly 1 unit. When the threaded rod 6 is subjected to external force and rotates in the fixed ring 12, it moves backward, driving the bottom ring 7 to move backward, further stretching the contact spring 8. The bottom ring 7 applies pressure to the rear side of the composite wall assembly 1 unit, abutting the composite wall assembly 1 unit, which is used to increase the connection gap on the externally installed wall.

[0048] Preferably, the fixing assembly 5 consists of a threaded rod 6, a bottom contact ring 7, a fixing ring 12, and a trigger spring 8. The threaded rod 6 is tightly fixed to the front middle part of the bottom contact ring 7, ensuring that the two can move in unison during subsequent operation. The trigger spring 8 is sleeved on the outer bottom of the threaded rod 6, providing crucial elastic cushioning and pressure regulation for the entire fixing assembly. The outer front part of the threaded rod 6 is located inside the middle of the fixing ring, and the relative rotation and movement between the two are achieved through a threaded connection.

[0049] When installing or adjusting the composite wall assembly 1, the operator can use a screwdriver with a Torx cut to engage with the Torx cut on the front end of the threaded rod 6. By applying external force, the threaded rod 6 rotates within the retaining ring 12. As the threaded rod 6 rotates forward, its fixed connection to the bottom contact ring 7 causes the bottom contact ring 7 to move forward as well. During this process, the actuating spring 8 is compressed, and its elastic potential energy gradually increases. According to Hooke's Law, a spring generates a spring force opposite to the direction of compression when compressed. This spring force acts on the rear side of the connecting groove 11 and the front side of the bottom contact ring 7. In this way, the actuating spring 8 applies pressure to the composite wall assembly 1, making it more stable in the installation position and effectively preventing the wall from loosening or shifting during use.

[0050] Conversely, when the threaded rod 6 rotates backward in the fixed ring 12 under external force, it will also drive the bottom contact ring 7 to move backward, at which point the contact spring 8 will be stretched. The stretched spring will also generate a restoring force, which applies pressure to the rear side of the composite wall assembly 1 unit through the bottom contact ring. In some special cases, such as when it is necessary to increase the connection gap between the composite wall and the external wall, it can flexibly adjust the connection state between the walls according to actual installation requirements, improving the adaptability of the wall in different installation environments.

[0051] At each of the four corners of each composite wall assembly unit 1, a connecting groove 11 is provided, and the fixing assembly 5 is installed inside these connecting grooves 11. Multiple fixing assemblies 5 extend along the four sides of each composite wall assembly unit 1, connect with each other, and work together to form a complete installation frame 4. This installation frame 4 tightly wraps each composite wall assembly unit 1, providing all-round protection and support for the wall.

[0052] Furthermore, the connection between the fixing assembly 5 and the mounting frame 4 forms a robust mechanical system. The fixing assembly 5, through pressure adjustment via the trigger spring 8, ensures the tight fixation of each individual composite wall assembly 1 within the mounting frame 4, reducing relative displacement and loosening between the units. The mounting frame 4, on the other hand, reinforces the wall as a whole, enhancing its integrity and resistance to deformation. When faced with various external forces, this interconnected structure effectively disperses and transfers stress, enabling the wall to withstand greater loads and improving its safety and reliability in complex environments.

[0053] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A modular perforated sound-absorbing composite wall, comprising at least one composite wall assembly (1) stack, having multiple composite wall assembly (1) units arranged in multiple rows and columns along a stacking direction predefined for the stack; Each of the composite wall assembly (1) includes a perforated panel layer (2) located at the frontmost side, which has multiple perforated bodies (3) inside; a porous sound-absorbing material layer (9) located at the rear of the perforated panel layer (2); and a support layer (10) located at the rear of the porous sound-absorbing material layer (9). Its features are: Each of the composite wall assemblies (1) includes a connecting groove (11) at one of the four corners and a fixing assembly (5) disposed inside the connecting groove (11); Multiple fixed assemblies (5) extend along the four sides of each composite wall assembly (1) to form an installation frame (4), and together with the installation frame (4), enclose each composite wall assembly (1); In at least one composite wall assembly (1) stack, when viewed from the front of the composite wall assembly (1) stack, the entire composite wall assembly (1) stack is wrapped by the mounting frame (4), forming a plane on the front side.

2. The assembled perforated sound-absorbing composite wall according to claim 1, characterized in that: The fixed assembly (5) includes a threaded rod (6), a bottom contact ring (7), a fixed ring (12), and a trigger spring (8). The threaded rod (6) and the bottom contact ring (7) are fixedly connected at the middle of the front side. The trigger spring (8) is located on the outer side of the bottom of the threaded rod (6), and the outer side of the front side of the threaded rod (6) is located inside the middle of the fixed ring (12).

3. The assembled perforated sound-absorbing composite wall according to claim 2, characterized in that: The threaded rod (6) rotates in the middle of the fixed ring (12) through the front external thread, completing the back-and-forth movement within the fixed ring (12).

4. The assembled perforated sound-absorbing composite wall according to claim 3, characterized in that: The threaded rod (6) passes through the connecting groove (11) of the composite wall assembly (1) unit. The touch spring (8) is located inside the rear side of the connecting groove (11), and the front and rear ends of the touch spring (8) press against the rear side of the connecting groove (11) and the front side of the bottom ring (7) respectively. When the touch spring (8) returns to its deformation, it applies pressure to the objects at the front and rear ends respectively.

5. The assembled perforated sound-absorbing composite wall according to claim 4, characterized in that: The threaded rod (6) has a slit inside the front end, which can be fitted with an external screwdriver. When the threaded rod (6) is subjected to external force and rotates in the fixed ring (12), it moves forward and drives the bottom ring (7) to move forward, further compressing the touch spring (8). The touch spring (8) applies pressure to the composite wall assembly (1) unit.

6. The assembled perforated sound-absorbing composite wall according to claim 5, characterized in that: When the threaded rod (6) is rotated in the fixed ring (12) by external force and moves backward, it drives the bottom ring (7) to move backward, further stretching the touch spring (8). The bottom ring (7) applies pressure to the rear side of the composite wall assembly (1) unit, abutting the composite wall assembly (1) unit, which is used to increase the connection gap on the externally installed wall.

7. The assembled perforated sound-absorbing composite wall according to claim 1, characterized in that: In the composite wall assembly (1) unit, the perforated panel layer (2), the porous sound-absorbing material layer (9) and the support layer (10) are fixed by snap-fit ​​connection, and acoustic sealant is provided between all splicing seams between the layers for filling.

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