| 摘要 |
PURPOSE: To promote the freedom of a setup. position of a lifting gear by making it installable freely in the cross direction size of a lifted work such as a ratten blind or the like. CONSTITUTION: A coupling mechanism C is installed on a pulley shaft SP driving the mechanismic member of a lifting gear with a motor M and two limit switches US and UL detecting both upper and lower limit positions of a lifted work with a speed reducer H and the motor M are installed concentrically on this coupling mechanism, while two pulleys P1 and P2 are installed in space between intervalves W1 and 2 set according to the size of a blind, and two winding cords A1 and A2 of the lifted work are locked to these pulleys. In addition, in the case where the blind size is large enough, if each pulley position is secured to P'Δ1 P'2, the pulley interval comes W' 1-2, therefore it can be met with even a large-sized blind, etc.
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