Abstract: A blind apparatus comprises a drum on which a blind is wound, a motor for rotating the drum, an extrusion mechanism having a foldable arm for thrusting the leading end of the blind in a blind spreading direction with a spring force, a one-way clutch for transmitting the rotating force of the motor to the drum when the drum rotates in a blind take-up direction, a stopper for regulating a position of the arm at a spreading end position of the blind, and a circuit for detecting a motor lock current when taking up the blind. A stopping position in the spreading direction of the blind is detected by the position regulation of the arm by the stopper, and a stopping position in the take-up direction of the blind is detected by detecting the motor lock current. Thus, in a simple structure, the cost is reduced, and the operating sound is suppressed at the same time.

Abstract: A blind apparatus comprises a drum on which a blind is wound, a motor for rotating the drum, an extrusion mechanism having a foldable arm for thrusting the leading end of the blind in a blind spreading direction with a spring force, a one-way clutch for transmitting the rotating force of the motor to the drum when the drum rotates in a blind take-up direction, a stopper for regulating a position of the arm at a spreading end position of the blind, and a circuit for detecting a motor lock current when taking up the blind. A stopping position in the spreading direction of the blind is detected by the position regulation of the arm by the stopper, and a stopping position in the take-up direction of the blind is detected by detecting the motor lock current. Thus, in a simple structure, the cost is reduced, and the operating sound is suppressed at the same time.