Patent ID: 6938667
Filing Date: 2005-09-06
Classification: E06B

Abstract:
1. An automatic winding screen device, comprising: a winding box having a bracket at an end thereof; a winding shaft having a first spring support seat and a clutch support seat disposed therein and attached thereto, the winding shaft being configured to roll and unroll a screen on a surface thereof and being rotatably supported by the winding box; a fixed shaft having first and second ends and a second spring support seat, the first end of the fixed shaft being connected to the bracket; a coil spring having first and second ends, the coil spring being disposed inside the winding shaft and having the first and second ends connected to the first and second spring support seats, respectively; a one-way clutch mechanism having damper-side and winding-shaft clutch pieces, the winding-shaft clutch piece being disposed on the clutch support seat; and a damper disposed within the winding box on the second end of the fixed shaft between the first spring support seat and the clutch support seat, a damper shaft being connected to the damper-side clutch piece, wherein the one-way clutch mechanism is configured to disconnect the damper from the winding shaft when the screen is unrolled from the winding shaft and to connect the damper to the winding shaft when rolling the screen over the winding shaft at least during a later stage of rolling the screen over the winding shaft.