Motor-driven roller blind
First Claim
1. A motor-driven roller blind comprising:
- an apron formed by a juxtaposition of slats at least hingedly joined to each other and including ends moving in side slides;
a winding shaft around which said apron rolls up and unrolls from;
a tubular-type driving gear-motor accommodated inside said winding shaft;
means for providing an electrical signal representative of the movement of said apron;
an electrical-signal processing unit capable of stopping the running of said driving gear-motor in the event that an obstacle is present, wherein said means for providing an electrical signal comprises at least one inductive sensor extending at least partly along a path followed by said apron, and wherein said apron includes a lower portion provided with a permanent magnet capable of creating an electromotive force when passing said inductive sensor.
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Accused Products
Abstract
The invention relates to a motor-driven roller blind comprising, on the one hand, an apron rolling up onto and unrolling from a winding shaft inside which is accommodated a tubular-type driving gear-motor and, on the other hand, means providing an electrical signal representative of the movement of the apron and an electrical-signal processing unit capable of acting on the running of the driving gear-motor, viz. to control the stopping of same in the event an obstacle is present. As a matter of fact, said means providing an electrical signal representative of the movement of the apron are comprised of at least one inductive sensor extending at least partly along the path followed by the apron, this inductive sensor being capable of creating an electromotive force under the action of the passing of a permanent magnet associated with the lower portion of the apron, which electromotive force is detected by the processing unit.
68 Citations
17 Claims
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1. A motor-driven roller blind comprising:
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an apron formed by a juxtaposition of slats at least hingedly joined to each other and including ends moving in side slides; a winding shaft around which said apron rolls up and unrolls from; a tubular-type driving gear-motor accommodated inside said winding shaft; means for providing an electrical signal representative of the movement of said apron; an electrical-signal processing unit capable of stopping the running of said driving gear-motor in the event that an obstacle is present, wherein said means for providing an electrical signal comprises at least one inductive sensor extending at least partly along a path followed by said apron, and wherein said apron includes a lower portion provided with a permanent magnet capable of creating an electromotive force when passing said inductive sensor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification