A sound-absorbing cover (1) is provided with a first sound-absorbing layer (10) and a second sound-absorbing layer (20) which are made of foam, the sound-absorbing cover (1) is laminated in a state in which a first skin layer (12) of the first sound-absorbing layer (10) and a second skin layer (22) of the second sound-absorbing layer (20) face each other, and an air layer (30) is provided between the facing surfaces of the first skin layer (12) and the second skin layer (22). A first skin layer 12 of the first sound-absorbing layer 10 and a second skin layer 22 of the second sound-absorbing layer 20 are set to have different rigidities.
吸音罩1具备由发泡体制成的第一吸音层10和第二吸音层20,以第一吸音层10的第一表皮层12和第二吸音层20的第二表皮层22相对的状态层叠,在第一表皮层12与第二表皮层22两者的对置面之间具备空气层30。第一吸音层10的第一表皮层12与第二吸音层20的第二表皮层22被设定为不同的刚性。
Sound absorption cover
吸音罩
2022-12-02
Patent
Electronic Resource
Chinese
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