公开(公告)号：US20180051462A1

公开(公告)日：2018-02-22

申请号：US15802784

申请日：2017-11-03

Applicant: FUJIFILM Corporation

Inventor： Shinya HAKUTA ,  Shogo YAMAZOE ,  Tadashi KASAMATSU ,  Masayuki NAYA

IPC: E04B1/84

Abstract: A soundproof structure has a plurality of soundproof cells arranged in a two-dimensional manner. Each of the plurality of soundproof cells includes a frame formed of a frame member forming an opening and a film fixed to the frame. Two or more types of soundproof cells having different first resonance frequencies are present in the plurality of soundproof cells. A shielding peak frequency at which transmission loss is maximized is present within a range equal to or higher than a lowest frequency among first resonance frequencies of the soundproof cells and equal to or lower than a highest frequency among the first resonance frequencies of the soundproof cells.

公开(公告)号：US20170341186A1

公开(公告)日：2017-11-30

申请号：US15679650

申请日：2017-08-17

Applicant: FUJIFILM Corporation

Inventor： Shinya HAKUTA ,  Shogo YAMAZOE ,  Tatsuya YOSHIHIRO ,  Akihiko OHTSU ,  Tadashi KASAMATSU ,  Masayuki NAYA

IPC: B23K26/382 ,  G10K11/16 ,  E04B1/86

CPC classification number: B23K26/382 ,  B23K26/00 ,  E04B1/86 ,  G10K11/16 ,  G10K11/162 ,  G10K11/172

Abstract: A soundproof structure has one or more soundproof cells. Each of the one or more soundproof cells includes a frame having a through-hole, a film fixed to the frame, and an opening portion configured to include one or more holes drilled in the film. Neither end portions of the through-hole of the frame are closed. The soundproof structure has a shielding peak frequency, which is determined by the opening portion of each of the one or more soundproof cells and at which a transmission loss is maximized, on a lower frequency side than a first natural vibration frequency of the film of each of the one or more soundproof cells, and selectively insulates sound in a predetermined frequency band including the shielding peak frequency at its center. Accordingly, there is provided a soundproof structure that is light and thin, does not depend on the position and shape of a hole, has high robustness as a sound insulation material, is stable, has air permeability, has no heat, and is excellent in manufacturability, and a soundproof structure manufacturing method.