High efficiency roller shade
First Claim
Patent Images
1. A system for operating a roller shade comprising:
- a roller configured to be attached to a shade;
a DC motor having a rated voltage, the DC motor operatively connected to the roller and configured to rotate the roller; and
a DC power source operatively connected to the DC motor to provide DC power to the DC motor at an average voltage,wherein a maximum average voltage the DC power source can supply the DC motor is approximately half or less than half the rated voltage of the DC motor wherein the motor rotates with the roller.
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Accused Products
Abstract
A motorized roller shade is provided. The motorized roller shade includes a shade tube in which a motor unit, a controller unit and a power supply unit are disposed. The controller unit includes a controller to control the motor. The power supply unit includes at least one bearing rotatably coupled to a support shaft. The motor unit includes at least one bearing, rotatably coupled to another support shaft, a DC gear motor and a counterbalancing device. The output shaft of the DC gear motor is coupled to the support shaft such that the output shaft and the support shaft do not rotate when the support shaft is attached to a mounting bracket.
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Citations
22 Claims
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1. A system for operating a roller shade comprising:
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a roller configured to be attached to a shade; a DC motor having a rated voltage, the DC motor operatively connected to the roller and configured to rotate the roller; and a DC power source operatively connected to the DC motor to provide DC power to the DC motor at an average voltage, wherein a maximum average voltage the DC power source can supply the DC motor is approximately half or less than half the rated voltage of the DC motor wherein the motor rotates with the roller.
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2. A system for operating a roller shade comprising:
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a roller configured to be attached to a shade; a DC motor having a rated voltage, the DC motor operatively connected to the roller and configured to rotate the roller; and a DC power source operatively connected to the DC motor to provide DC power to the DC motor at an average voltage, wherein a maximum average voltage the DC power source can supply the DC motor is approximately half or less than half the rated voltage of the DC motor further comprising a shaft on which the roller is mounted and the shaft is configured to stay stationary and the roller rotates about the shaft. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method of operating a roller shade comprising:
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supplying DC power to a DC motor wherein the supplied power is, on average, a voltage of approximately half or less than half of the rated voltage of the motor; rotating at least one gear in a set of gears; and rotating a tube connected to a shade when at least one of either the motor operates and the shade is manually pulled off of the roller, wherein the set of gears is part of a mechanical connection between the DC motor and the tube; wherein the tube rotates fewer times than revolutions of an output shaft of the motor wherein the motor rotates with the tube. - View Dependent Claims (19, 20, 21, 22)
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Specification