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To provide a soundproof material for a ventilation port that can be easily provided in a ventilation unit, ensure a ventilation path of a proper size and have an excellent ventilation effect, improve a soundproof effect while ensuring an opening are, be adapted to various ventilation ports by adjusting the entire length, and correspond to the magnitude of nose.SOLUTION: A plurality of annular discs 1 is overlapped to configure a cylindrical body 3 that has a ventilation path 2 inside. Projecting portions 1a provided in the inside of the respective annular discs 1 are shifted to be partially overlapped, thereby forming a step-shaped twisting portion 2a in the ventilation path 2. The projecting portions 1a are provided in at least one place on an inner periphery of each annular disc 1 or at plural places at equal intervals. The twisting portion 2a is formed to be a step-shape of at least two types different in an inclination degree.SELECTED DRAWING: Figure 3
【課題】換気ユニットに併設し易く、適切な広さの通気路を確保して換気効果に優れ、さらに開口面積を確保しながら防音効果を高め、また全長を調節することにより様々な換気口に適合すると共に、騒音の大きさに応じた対応をすることができる換気口用防音材を提供する。【解決手段】複数枚の環状盤１を重ね合わせて、内部に通気路２を有する円筒胴体３を構成し、前記環状盤１のそれぞれの内側に設けた突出部１ａをずらせて一部が重なるようにして、前記通気路２に段差状のねじれ部２ａを形成した。前記突出部１ａは、それぞれの環状盤１の内周の少なくとも一個所、または等間隔で複数個所に設けたものとした。前記ねじれ部２ａは、傾斜度の異なった少なくとも二種以上の段差状に形成したものとした、【選択図】図３
To provide a soundproof material for a ventilation port that can be easily provided in a ventilation unit, ensure a ventilation path of a proper size and have an excellent ventilation effect, improve a soundproof effect while ensuring an opening are, be adapted to various ventilation ports by adjusting the entire length, and correspond to the magnitude of nose.SOLUTION: A plurality of annular discs 1 is overlapped to configure a cylindrical body 3 that has a ventilation path 2 inside. Projecting portions 1a provided in the inside of the respective annular discs 1 are shifted to be partially overlapped, thereby forming a step-shaped twisting portion 2a in the ventilation path 2. The projecting portions 1a are provided in at least one place on an inner periphery of each annular disc 1 or at plural places at equal intervals. The twisting portion 2a is formed to be a step-shape of at least two types different in an inclination degree.SELECTED DRAWING: Figure 3
【課題】換気ユニットに併設し易く、適切な広さの通気路を確保して換気効果に優れ、さらに開口面積を確保しながら防音効果を高め、また全長を調節することにより様々な換気口に適合すると共に、騒音の大きさに応じた対応をすることができる換気口用防音材を提供する。【解決手段】複数枚の環状盤１を重ね合わせて、内部に通気路２を有する円筒胴体３を構成し、前記環状盤１のそれぞれの内側に設けた突出部１ａをずらせて一部が重なるようにして、前記通気路２に段差状のねじれ部２ａを形成した。前記突出部１ａは、それぞれの環状盤１の内周の少なくとも一個所、または等間隔で複数個所に設けたものとした。前記ねじれ部２ａは、傾斜度の異なった少なくとも二種以上の段差状に形成したものとした、【選択図】図３
SOUNDPROOF MATERIAL FOR VENTILATION PORT
換気口用防音材
KAKO CHIKAKO (author)
2021-02-04
Patent
Electronic Resource
Japanese
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