To provide a flap door excellent in rotation performance.SOLUTION: A flap door 100 for opening/closing a ventilation port 21 by rotating around a rotary shaft part 110 comprises: a first door part 120 disposed on an upper side of the perpendicular direction against the rotary shaft part 110; and a second door part 130 disposed on a lower side of the perpendicular direction against the rotary shaft part 110. A gravity CG of the flap door 100 is positioned at the second door part 130 side from the rotary shaft part 110. In the first door part 120, a project area from an opening direction when the ventilation port 21 is closed is smaller than that of the second door part 130, and a weight per unit area is heavier than that of the second door part 130.SELECTED DRAWING: Figure 7
【課題】回転性に優れたフラップドアを提供する。【解決手段】回転軸部110を中心に回転することで通風口21を開閉するフラップドア100は、回転軸部110に対し垂直方向上側に設けられる第1ドア部120と、回転軸部110に対し垂直方向下側に設けられる第2ドア部130と、を備え、フラップドア100の重心CGは、回転軸部110よりも第2ドア部130側に位置し、第1ドア部120は、通風口21を閉じているときの開口方向からの投影面積が第2ドア部130よりも小さく、単位面積あたりの重量が第2ドア部130よりも重い。【選択図】図7
FLAP DOOR
フラップドア
2022-05-31
Patent
Electronic Resource
Japanese
IPC: | B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES |
Automatic flap door of construction elevator and using method of automatic flap door
European Patent Office | 2022
|