一种吸音金属覆膜板

Abstract

本申请属于吸音装饰材料技术领域，具体为一种吸音金属覆膜板，包括金属板与装饰膜，所述金属板与装饰膜之间通过粘胶层粘合，所述装饰膜上开设有微孔，所述金属板上开设有吸音孔，所述金属板与装饰膜之间设置有反射组件，所述吸音孔的内部设置有减震组件，所述反射组件包括正弦波形板，所述正弦波形板固定连接在金属板的左侧。本申请中，通过矩形槽的设置可以使声波在空腔内引发空气共振，从而消耗声波能量，并且利用正弦波形板能使入射的声波在曲面表面发生多方向反射与散射，破坏声波的规律性传播，从而逐步虚弱声波的能量，进而可以大幅虚弱声波在传递过程中的能量，使得噪音可以得到有效吸收，降低噪音传递效果。

Claims

1. A sound-absorbing metal-clad sheet comprising a metal sheet (1) and a decorative film (3), characterized by: The metal plate (1) and the decorative film (3) are bonded together by an adhesive layer (2). The decorative film (3) has micropores (4) and the metal plate (1) has sound-absorbing holes (5). A reflective component (6) is provided between the metal plate (1) and the decorative film (3). A shock-absorbing component (7) is provided inside the sound-absorbing hole (5). The reflective component (6) includes a sine wave plate (61), which is fixedly connected to the left side of the metal plate (1). The surface of the sine wave plate (61) is provided with a through hole (62), and the adhesive layer (2) is provided with a rectangular groove (63).

2. The sound absorbing metal-clad panel according to claim 1, wherein: The shock-absorbing component (7) includes a spiral groove (71) which is formed on the inner wall of the sound-absorbing hole (5).

3. The sound absorbing metal-clad panel of claim 1, wherein: One end of the sound-absorbing hole (5) is fixedly connected to a porous foam board (72), and the other end of the sound-absorbing hole (5) is fixedly connected to a fiber felt (73).

4. The sound absorbing metal-clad panel according to claim 3, wherein: The diameter of the inlet end of the sound-absorbing hole (5) is larger than the diameter of its outlet end, forming a sound wave guiding channel with a funnel-shaped axial cross section.

5. The sound absorbing metal-clad panel of claim 2, wherein: The spiral groove (71) is a conical spiral groove structure. Its spiral angle is gradually distributed along the axial direction of the sound-absorbing hole (5). The spiral angle of the spiral groove (71) gradually decreases from left to right, forming a gradually shrinking spiral guide channel.

6. The sound absorbing metal-clad panel according to claim 3, wherein: The porous foam board (72) is located at the inlet end of the sound-absorbing hole (5), and the fiber felt (73) is located at the outlet end of the sound-absorbing hole (5).

7. The sound absorbing metal-clad panel of claim 1, wherein: The cross-section of the sine wave plate (61) is a sine curve structure, and the sine wave plate (61) is located inside the rectangular groove (63).

8. The sound absorbing metal-clad panel of claim 1, wherein: The pore size of the micropore (4) is smaller than that of the sound-absorbing hole (5).

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