| 摘要 |
<p>A speed reducer for rolling blinds comprises a sealed housing (2), a rotator (4) with vane blades (3) disposed in the sealed housing (2), a liquid substance filled in the sealed housing (2) and a shaft (5) rotatalbely extended through the sealed housing (2) coupling with the rotator (4), wherein the sealed housing (2) is composed of a cylinder (2a) and a cylinder cap (2c) sealing the opening (2b) thereof and an axle hole (4a) is disposed in the rotator (4) and extending thereinto, whereby the shaft (5) perforating through the cylinder cap (2c) with a perforation (2d) inserts into the axle hole (4a) of the rotator (4). The speed reducer for rolling blinds reduces the occurrence of a noise and causes a decreasing speed, which results in alleviating impact on a rolling blind when moving to the wind up position.</p> |
