Magnetorheological soundproofing cotton damping with anti-interference structure

Abstract

The utility model discloses a magnetorheological sound insulation cotton damping with anti -interference structure relates to sound insulation material technical field, including sound insulation cotton layer and anti -interference structure layer. The composite electromagnetic shielding layer of the magnetorheological sound insulation cotton damping with anti -interference structure outermost layer is alternately woven composite by nanometer copper net and graphene film, can be all -round shielding to electromagnetic interference, creates stable electromagnetic environment for the inside magnetorheological liquid filling cavity, effectively avoids the outside electromagnetic signal interference magnetorheological liquid response to the magnetic field, guarantees its rheological characteristic stable play, the three -dimensional shock attenuation layer of inner layer adopts the even arrangement of hexagonal honeycomb -like elastic rubber film and viscoelastic damping block, and is matched with interval distribution's shock attenuation spring and shock attenuation rubber block, can form multistage shock attenuation system, effectively absorbs and buffers mechanical vibration, greatly reduced the influence of outside vibration to sound insulation cotton layer and magnetorheological liquid filling cavity, has improved the reliability of product under complex vibration environment significantly.

Description

Technical Field

[0001] This utility model relates to the field of sound insulation materials technology, specifically to a magnetorheological sound insulation cotton damping material with an anti-interference structure. Background Technology

[0002] With the development of modern society, people's demand for sound insulation and noise reduction is increasing. Magnetorheological sound insulation cotton damping, as a new type of sound insulation material, combines the rheological properties of magnetorheological fluid under the action of a magnetic field with the sound absorption properties of sound insulation cotton to achieve good sound insulation effect.

[0003] However, existing magnetorheological sound insulation cotton damping still has some problems:

[0004] In practical applications, existing magnetorheological sound insulation cotton damping is inadequate in many ways. For example, when used near electronic devices, electromagnetic interference can affect the response of the magnetorheological fluid to the magnetic field. In vibration environments, mechanical vibration can disrupt the distribution of the sound insulation cotton and the magnetorheological fluid, reducing the sound insulation effect. Consequently, magnetorheological sound insulation cotton damping is insufficient in terms of anti-interference and cannot meet the needs of use in complex environments.

[0005] Therefore, we propose a magnetorheological sound insulation cotton damper with an anti-interference structure to solve the problems mentioned above. Summary of the Invention

[0006] The purpose of this invention is to provide a magnetorheological sound insulation cotton damper with an anti-interference structure, in order to solve the problems mentioned in the background art. In actual use, for example, when used near electronic equipment, electromagnetic interference can affect the response of the magnetorheological fluid to the magnetic field; in a vibration environment, mechanical vibration can damage the distribution of the sound insulation cotton and the magnetorheological fluid, reducing the sound insulation effect. As a result, the magnetorheological sound insulation cotton damper is insufficient in terms of anti-interference and cannot meet the needs of use in complex environments.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a magnetorheological sound insulation cotton damping system with an anti-interference structure, comprising a sound insulation cotton layer and an anti-interference structural layer:

[0008] The sound insulation cotton layer includes a magnetorheological fluid filling cavity formed therein, and a magnetically conductive baffle is provided inside the magnetorheological fluid filling cavity. The sound insulation cotton layer is covered with an anti-interference structural layer, which is divided into two layers. The outermost layer of the anti-interference structural layer is provided with a composite electromagnetic shielding layer. The inner layer of the anti-interference structural layer, which is covered with the sound insulation cotton layer, is provided with a three-dimensional vibration damping layer. The three-dimensional vibration damping layer includes an elastic rubber membrane disposed on its outer surface. The elastic rubber membrane is filled with a viscoelastic damping block. A vibration damping spring is fixed on the outer surface of the three-dimensional vibration damping layer. The middle of the vibration damping spring is filled with a vibration damping rubber block.

[0009] By adopting the above technical solution, the composite electromagnetic shielding layer blocks external electromagnetic interference, preventing it from affecting the performance of the magnetorheological fluid. In the three-dimensional damping layer, the elastic rubber membrane, viscoelastic damping block, damping spring, and damping rubber block work together to absorb and buffer mechanical vibration. At the same time, the magnetically conductive baffle in the sound insulation cotton layer works with the magnetorheological fluid to produce a rheological effect under the magnetic field, effectively resisting electromagnetic and mechanical interference, maintaining the stable operation of the magnetorheological fluid, enhancing the absorption and damping effect of the magnetorheological sound insulation cotton on sound waves, and improving the overall sound insulation performance.

[0010] Preferably, the magnetically conductive partition is spirally coiled within the magnetorheological fluid filling cavity.

[0011] Using the above technical solution, the spiral magnetic guide plate guides the magnetic field to be evenly distributed along the spiral path in the magnetorheological fluid filling cavity, which promotes the smooth flow of the magnetorheological fluid in the spirally connected sub-cavities, so as to give full play to the magnetorheological effect.

[0012] Preferably, the composite electromagnetic shielding layer is composed of alternating layers of copper nanomesh and graphene film.

[0013] Using the above technical solution, the nano-copper mesh has a good shielding ability against low and medium frequency electromagnetic interference, and the graphene film can effectively block high frequency electromagnetic signals. The two are alternately woven and combined to ensure that the magnetorheological sound insulation cotton damping can stably perform its sound insulation performance in complex electromagnetic environments.

[0014] Preferably, the elastic rubber membrane and viscoelastic damping blocks are evenly distributed in several groups along the upper and lower end faces of the three-dimensional damping layer, and the elastic rubber membrane has a hexagonal honeycomb structure.

[0015] By adopting the above technical solution, the hexagonal honeycomb elastic rubber membrane and viscoelastic damping blocks are evenly arranged, which can efficiently absorb mechanical vibrations in different directions, reduce the impact of vibration on the sound insulation cotton layer and the magnetorheological fluid filling cavity, and improve the stability and sound insulation performance of the magnetorheological sound insulation cotton damping under vibration environment.

[0016] Preferably, the shock-absorbing springs and shock-absorbing rubber blocks are evenly distributed in multiple sets along the outer surface of the three-dimensional shock-absorbing layer, and the shock-absorbing springs, shock-absorbing rubber blocks, elastic rubber membrane, and viscoelastic damping blocks are arranged at intervals.

[0017] By adopting the above technical solution, the damping springs, damping rubber blocks, elastic rubber membranes, and viscoelastic damping blocks are arranged alternately to form a multi-level vibration absorption system. This system disperses and attenuates vibrations from different frequencies and directions, effectively copes with complex and variable mechanical vibration interference, avoids damage to the sound insulation cotton layer and magnetorheological fluid filling cavity caused by vibration, and ensures the stability of the magnetorheological sound insulation cotton damping structure.

[0018] Preferably, one end of the shock-absorbing spring is fixedly connected to the composite electromagnetic shielding layer, and the other end of the shock-absorbing spring is fixedly connected to the three-dimensional shock-absorbing layer.

[0019] By adopting the above technical solution, an elastic connection is formed between the composite electromagnetic shielding layer and the three-dimensional damping layer through the damping spring. When external mechanical vibration occurs, the damping spring absorbs the vibration energy, buffers the vibration impact, maintains the relative position stability of the two, ensures the integrity of the anti-interference structure of the magnetorheological sound insulation cotton damping, and improves the stability of the sound insulation performance.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] 1. The outermost composite electromagnetic shielding layer is made of alternating woven nano-copper mesh and graphene film, which can provide all-round shielding against electromagnetic interference, creating a stable electromagnetic environment for the internal magnetorheological fluid filling cavity, effectively preventing external electromagnetic signals from interfering with the response of the magnetorheological fluid to the magnetic field, and ensuring the stable performance of its rheological properties. The inner three-dimensional shock absorption layer uses hexagonal honeycomb elastic rubber membrane and viscoelastic damping blocks evenly arranged, and is matched with spaced shock absorption springs and shock absorption rubber blocks to form a multi-level shock absorption system, effectively absorbing and buffering mechanical vibration, greatly reducing the impact of external vibration on the sound insulation cotton layer and the magnetorheological fluid filling cavity, and significantly improving the reliability of the product in complex vibration environments.

[0022] 2. The spirally coiled magnetic guide plate inside the magnetorheological fluid filling cavity guides the uniform distribution of the magnetic field, promoting the smooth flow of the magnetorheological fluid in the interconnected sub-cavities, fully utilizing the magnetorheological effect, and enhancing the damping effect on sound waves. At the same time, the synergistic cooperation between the sound insulation cotton layer and the magnetorheological fluid further enhances the absorption and blocking ability of sound waves of different frequencies. The organic combination of the anti-interference structural layer, the sound insulation cotton layer, and the magnetorheological fluid filling cavity enables the damping material to effectively resist external electromagnetic and mechanical interference, and to achieve stable and efficient sound insulation function. Attached Figure Description

[0023] Figure 1 This is a schematic cross-sectional view of the main body of this utility model;

[0024] Figure 2 This is a schematic diagram of the connection structure between the three-dimensional shock-absorbing layer and the sound-insulating cotton layer of this utility model;

[0025] Figure 3 This is a schematic diagram of the connection structure between the composite electromagnetic shielding layer and the three-dimensional shock absorption layer of this utility model;

[0026] Figure 4 This utility model Figure 3 Enlarged structural diagram at point A in the middle;

[0027] Figure 5This is a schematic diagram of the magnetically conductive partition structure inside the sound insulation cotton layer of this utility model.

[0028] In the diagram: 1. Sound insulation cotton layer; 11. Magnetorheological fluid filling cavity; 12. Magnetic conductive partition; 2. Anti-interference structural layer; 21. Composite electromagnetic shielding layer; 22. Three-dimensional shock absorption layer; 2201. Elastic rubber membrane; 2202. Viscoelastic damping block; 2203. Shock absorption spring; 2204. Shock absorption rubber block. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0030] Please see Figures 1-5 This utility model provides a technical solution: a magnetorheological sound insulation cotton damping with an anti-interference structure, comprising a sound insulation cotton layer 1 and an anti-interference structure layer 2. The sound insulation cotton layer 1 includes a magnetorheological fluid filling cavity 11 formed therein, and a magnetically conductive partition 12 is provided inside the magnetorheological fluid filling cavity 11. The sound insulation cotton layer 1 is covered by the anti-interference structure layer 2, which is divided into two layers. The outermost layer of the anti-interference structure layer 2 is provided with a composite electromagnetic shielding layer 21. The inner layer of the anti-interference structure layer 2, which is covered by the sound insulation cotton layer 1, is provided with a three-dimensional shock absorption layer 22. The three-dimensional shock absorption layer 22 includes an elastic rubber membrane 2201 disposed on its outer surface. The elastic rubber membrane 2201 is filled with a viscoelastic damping block 2202. A shock absorption spring 2203 is fixed on the outer surface of the three-dimensional shock absorption layer 22. The middle part of the shock absorption spring 2203... The three-dimensional damping layer 22 is filled with shock-absorbing rubber blocks 2204; the magnetically conductive partition plate 12 is spirally coiled in the magnetorheological fluid filling cavity 11; the composite electromagnetic shielding layer 21 is composed of alternating woven composites of nano-copper mesh and graphene film; several groups of elastic rubber membrane 2201 and viscoelastic damping blocks 2202 are evenly distributed along the upper and lower end faces of the three-dimensional damping layer 22, and the elastic rubber membrane 2201 has a hexagonal honeycomb structure; multiple groups of shock-absorbing springs 2203 and shock-absorbing rubber blocks 2204 are evenly distributed along the outer surface of the three-dimensional damping layer 22, and the shock-absorbing springs 2203, shock-absorbing rubber blocks 2204, elastic rubber membrane 2201, and viscoelastic damping blocks 2202 are arranged at intervals; one end of the shock-absorbing spring 2203 is fixedly connected to the composite electromagnetic shielding layer 21, and the other end of the shock-absorbing spring 2203 is fixedly connected to the three-dimensional damping layer 22.

[0031] The outermost composite electromagnetic shielding layer 21 of the anti-interference structural layer 2 is composed of alternating woven copper nanomesh and graphene film. Utilizing the shielding properties of the copper nanomesh against low-to-medium frequency electromagnetic interference and the graphene film against high-frequency electromagnetic interference, broadband electromagnetic shielding is achieved, preventing electromagnetic interference from affecting the magnetic field response of the magnetorheological fluid in the magnetorheological fluid filling cavity 11. In the three-dimensional damping layer 22, hexagonal honeycomb structure elastic rubber membrane 2201 and viscoelastic damping blocks 2202 are uniformly arranged along the upper and lower end faces of the three-dimensional damping layer 22. The honeycomb structure disperses stress, and the viscoelastic damping blocks 2202 dissipate vibration energy. These elements, along with the uniformly distributed outer surface and the elastic rubber membrane... 2201, viscoelastic damping blocks 2202, and damping springs 2203 and damping rubber blocks 2204 arranged at intervals. The damping springs 2203 buffer vibration through elastic deformation, and the damping rubber blocks 2204 consume energy through elasticity and internal friction, forming a multi-level vibration absorption system that effectively resists mechanical vibration interference. At the same time, the magnetically conductive partition 12, which is spirally coiled in the magnetorheological fluid filling cavity 11, guides the uniform distribution of the magnetic field, allowing the magnetorheological fluid to flow smoothly in the connected sub-cavities, giving full play to the magnetorheological effect. Together with the sound insulation cotton layer 1, it ultimately achieves efficient sound insulation and ensures stable operation of the magnetorheological sound insulation cotton damping in complex electromagnetic and vibration environments.

[0032] Working principle: For this type of magnetorheological sound insulation cotton damping with anti-interference structure, the magnetorheological sound insulation cotton damping is composed of a sound insulation cotton layer 1 and an anti-interference structure layer 2. The anti-interference structure layer 2 includes an outermost composite electromagnetic shielding layer 21 and an inner three-dimensional damping layer 22. The composite electromagnetic shielding layer 21 can prevent external electromagnetic interference from affecting the magnetic field response of the magnetorheological fluid in the magnetorheological fluid filling cavity 11 by forming broadband electromagnetic shielding. In the three-dimensional damping layer 22, the hexagonal honeycomb structure elastic rubber membrane 2201 and viscoelastic damping blocks 2202 are evenly arranged along the upper and lower end faces, relying on the honeycomb structure The stress is dispersed and the viscoelastic damping block 2202 dissipates vibration energy. Combined with the damping springs 2203 and damping rubber blocks 2204 arranged at intervals on the outer surface of the elastic rubber membrane 2201 and the viscoelastic damping block 2202, a multi-level vibration absorption system is constructed to effectively resist mechanical vibration interference. Meanwhile, the spiral magnetic guide plate 12 in the magnetorheological fluid filling cavity 11 of the sound insulation cotton layer 1 guides the uniform distribution of the magnetic field, promotes the smooth flow of the magnetorheological fluid in the connecting sub-cavities, gives full play to the magnetorheological effect, and works synergistically with the sound insulation cotton layer 1 to achieve efficient sound insulation and ensure stable operation in complex electromagnetic and vibration environments.

[0033] This completes a series of tasks. The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0034] Although the present invention 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 invention should be included within the protection scope of the present invention.

Claims

1. A magnetorheological sound insulation cotton damping material with an anti-interference structure, comprising a sound insulation cotton layer (1) and an anti-interference structure layer (2), characterized in that: The sound insulation cotton layer (1) includes a magnetorheological fluid filling cavity (11) inside it. A magnetically conductive partition (12) is provided inside the magnetorheological fluid filling cavity (11). The sound insulation cotton layer (1) is covered with an anti-interference structure layer (2). The anti-interference structure layer (2) is divided into two layers. The outermost layer of the anti-interference structure layer (2) is provided with a composite electromagnetic shielding layer (21). The inner layer of the anti-interference structure layer (2) and the outer layer of the sound insulation cotton layer (1) is provided with a three-dimensional shock-absorbing layer (22). The three-dimensional shock-absorbing layer (22) includes an elastic rubber membrane (2201) provided on its outer surface. The elastic rubber membrane (2201) is filled with a viscoelastic damping block (2202). A shock-absorbing spring (2203) is fixed on the outer surface of the three-dimensional shock-absorbing layer (22). A shock-absorbing rubber block (2204) is filled in the middle of the shock-absorbing spring (2203).

2. The magnetorheological sound insulation cotton damping material with an anti-interference structure according to claim 1, characterized in that: The magnetically conductive partition (12) is spirally coiled inside the magnetorheological fluid filling cavity (11).

3. The magnetorheological sound insulation cotton damping material with an anti-interference structure according to claim 1, characterized in that: The composite electromagnetic shielding layer (21) is composed of alternating layers of copper nanowire mesh and graphene film.

4. The magnetorheological sound insulation cotton damping material with an anti-interference structure according to claim 1, characterized in that: The elastic rubber membrane (2201) and viscoelastic damping block (2202) are evenly distributed in several groups along the upper and lower end faces of the three-dimensional damping layer (22), and the elastic rubber membrane (2201) has a hexagonal honeycomb structure.

5. The magnetorheological sound insulation cotton damping material with an anti-interference structure according to claim 1, characterized in that: The shock-absorbing springs (2203) and shock-absorbing rubber blocks (2204) are evenly distributed in multiple sets along the outer surface of the three-dimensional shock-absorbing layer (22), and the shock-absorbing springs (2203), shock-absorbing rubber blocks (2204), elastic rubber membrane (2201), and viscoelastic damping blocks (2202) are arranged in an alternating manner.

6. The magnetorheological sound insulation cotton damping material with an anti-interference structure according to claim 1, characterized in that: One end of the shock-absorbing spring (2203) is fixedly connected to the composite electromagnetic shielding layer (21), and the other end of the shock-absorbing spring (2203) is fixedly connected to the three-dimensional shock-absorbing layer (22).

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