Soundproof structure
US10854183B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 27, 2017 |
| Grant date | Dec 1, 2020 |
| Priority date | — |
| Expiry date | Mar 27, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10K11/16
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
There is provided a soundproof structure which is light and thin, which has air permeability so that wind and heat can pass therethrough and accordingly no heat accumulates on the inside, and which is suitable for equipment, automobiles, and household applications. The soundproof structure has one or more soundproof cells. Each soundproof cell includes a frame having a through-hole through which sound passes, a film fixed to the frame, an opening portion configured to include one or more holes drilled in the film, and a weight disposed on the film. The soundproof structure has a first shielding peak frequency, which is determined by the opening portion drilled in the film and at which a transmission loss is maximized, on a lower frequency side than a first natural vibration frequency of the film of each soundproof cell and a second shielding peak frequency, which is determined by the weight and at which a transmission loss is maximized, on a higher frequency side than the first natural vibration frequency of the film, and selectively insulates sound in a predetermined frequency band centered on the first shielding peak frequency and sound in a predetermined frequency band centered …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.