| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent a repulsive return when operating a curtain from a fully closed state to a fully opened state and an erroneous operation when performing an opening/closing operation in a curtain rail for electrically opening/closing the curtain. <P>SOLUTION: The curtain rail for electrically opening/closing the curtain, which causes neither repulsive return of the curtain nor fluctuation phenomena of the curtain from re-actuation is provided by detecting a repulsive return distance in an initial installation by a rotation detector (a rotary encoder), allowing a control device to recognize the position as a curtain fully opened stop position, and defining it as an initial setting. This protector of the curtain rail for electrically opening/closing the curtain protects an electronic circuit of a curtain opening/closing operation control device by detecting an overload applied to a motor when the curtain is manually forcibly pulled during a curtain opening/closing operation and receiving it by the control device to disengage an electromagnetic clutch. <P>COPYRIGHT: (C)2010,JPO&INPIT |
