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
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.
대표청구항▼
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; anda DC power source operatively connected to the DC motor to provide DC power t
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; anda 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. 2. 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; anda 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. 3. The system of claim 2, wherein the connection between the DC motor and the roller includes a gear system. 4. The system of claim 3, wherein the gear system has between about a 40:1 and a 30:1 gear ratio. 5. The system of claim 3, wherein the gear system has between about a 40:1 and a 20:1 gear ratio. 6. The system of claim 5, wherein the maximum average voltage is about 9.6 volts and the rated voltage of the DC motor is about 24 volts. 7. The system of claim 5, wherein the maximum average voltage is about 4.8 volts and the rated voltage of the DC motor is about 24 volts. 8. The system of claim 5, wherein the maximum average voltage is 4.8 volts and the rated voltage of the DC motor is about 12 volts. 9. The system of claim 3, wherein the gear system includes a multistage planetary gear system. 10. The system of claim 2, wherein the maximum average voltage is between about 40% and about 20% of the rated voltage of the DC motor. 11. The system of claim 2, wherein the power source includes four to eight batteries. 12. The system of claim 11, wherein the batteries are C-cell, or D-cell batteries. 13. The system of claim 2, wherein the DC power source includes at least one of any of the following battery types: alkaline, zinc, lead acid, lithium and nickel. 14. The system of claim 2, wherein the DC power source is located within the roller. 15. The system of claim 2, wherein the roller is configured to rotate under either of the two following circumstances: the DC power source provides power to the DC motor and the shade is manually pulled. 16. The system of claim 2, wherein when a maximum amount of power from the DC power sources is applied to the DC motor, the motor runs significantly slower than a maximum rated speed of the DC motor. 17. The system of claim 16, wherein when a maximum amount of power from the DC power source is supplied to the DC motor, the DC motor runs at approximately half the DC motor's rated speed. 18. A method of operating a roller shade comprising: 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; androtating 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. 19. The method of claim 18, further comprising: supplying the DC power to the DC motor at about 9.6 volts and the motor is rated for about 24 volts. 20. The method of claim 18, wherein the output shaft of the motor rotates about 40 times for each rotation of the tube. 21. The method of claim 18, wherein the DC power is supplied by a DC power source located within the tube. 22. The method of claim 18, wherein a gear system operatively connects an output of the DC motor to the roller, wherein the gear system has a sufficiently low enough gear ratio to allow manual movement of the shade without breaking the gear system.
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