SCREEN DEVICE
To provide a screen device in which the tension of a screen can be adjusted.SOLUTION: A screen device 1 has a screen take-up mechanisms 10A, 10B that tension and wind screens 3A, 3B. The take-up mechanisms have take-up rollers 4A, 4B that wind the screens, take-up drums 40A, 40B coaxially installed...
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Format: | Patent |
Sprache: | eng ; jpn |
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Zusammenfassung: | To provide a screen device in which the tension of a screen can be adjusted.SOLUTION: A screen device 1 has a screen take-up mechanisms 10A, 10B that tension and wind screens 3A, 3B. The take-up mechanisms have take-up rollers 4A, 4B that wind the screens, take-up drums 40A, 40B coaxially installed with the take-up rollers, drum shafts 29A,29B rotatable relative to the take-up rollers, wires 30A, 30B connected to the take-up drums and the screens, and coil springs 34A, 34B connected to the take-up rollers and the drum shafts. The take-up drums and the drum shafts are switchable between an engaged position in which they are engaged around an axis and a disengaged position in which they are disengaged and capable of relative rotation around an axis. After rotating the drum shaft with the take-up drums and the drum shafts in a disengaged position, the tension of the screen can be adjusted by switching the take-up drums and the drum shafts to the engaged position.SELECTED DRAWING: Figure 1
【課題】スクリーンの張力を調節可能なスクリーン装置を提供する。【解決手段】スクリーン装置1は、スクリーン3A,3Bに張力を与えて巻回するスクリーン巻取機構10A,10Bを有する。巻取機構は、スクリーンを巻き取る巻取ローラ4A,4Bと、巻取ローラと同軸上に設けた巻取ドラム40A,40Bと、巻取ローラに相対回転可能に設けたドラム軸29A,29Bと、巻取ドラムとスクリーンに連結されたワイヤ30A,30Bと、巻取ローラとドラム軸に連結されたコイルばね34A,34Bを有する。巻取ドラム及びドラム軸は、これら両者が軸周りに係合状態となる係合位置と、これら両者の係合状態が解除されて軸周りに相対回転可能な状態となる非係合位置との間で切換可能であり、巻取ドラムとドラム軸が非係合位置に切り換えられた状態でドラム軸を回動させた後に巻取ドラムとドラム軸を係合位置に切り換えることでスクリーンの張力調整ができる。【選択図】 図1 |
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