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 tube;a shade operably connected to the roller tube;a DC motor;the DC motor having a rated voltage;the DC motor operatively connected to the roller tube and configured to rotate the roller;a DC power source;the DC power source operatively
1. A system for operating a roller shade comprising: a roller tube;a shade operably connected to the roller tube;a DC motor;the DC motor having a rated voltage;the DC motor operatively connected to the roller tube and configured to rotate the roller;a DC power source;the DC power source operatively connected to the DC motor and configured 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 less than half the rated voltage of the DC motor;a counterbalance assembly;the counterbalance assembly operatively connected to the roller tube and configured to provide a counterbalance force to the roller tube. 2. The system of claim 1, wherein the connection between the DC motor and the roller tube includes a gear system. 3. The system of claim 2, wherein the gear system has between about a 40:1 and a 20:1 gear ratio. 4. The system of claim 2, wherein the gear system includes a multistage planetary gear system. 5. The system of claim 1, wherein the maximum average voltage is about 9.6 volts and the rated voltage of the DC motor is about 24 volts. 6. The system of claim 1, wherein the maximum average voltage is about 4.8 volts and the rated voltage of the DC motor is about 24 volts. 7. The system of claim 1, wherein the maximum average voltage is 4.8 volts and the rated voltage of the DC motor is about 12 volts. 8. The system of claim 1, wherein the maximum average voltage is between about 40% and about 20% of the rated voltage of the DC motor. 9. The system of claim 1, wherein the counterbalance assembly includes at least one spring. 10. The system of claim 1, wherein the counterbalance assembly includes a rotating perch and a stationary perch. 11. The system of claim 1, wherein the counterbalance assembly includes one or more springs, wherein a first end of the one or more springs rotates with the roller tube, whereas a second end of the one or more springs remains stationary as the roller tube rotates. 12. The system of claim 1 wherein the DC motor is positioned within a first end of the roller tube, and the counterbalance assembly is positioned within a second end of the roller tube. 13. The system of claim 1, wherein the DC power source is located within the roller tube. 14. The system of claim 1, wherein the DC motor rotates with the roller tube. 15. The system of claim 1, 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 moved. 16. A method of operating a roller shade comprising: providing a DC motor having a rated voltage;supplying DC power to the DC motor wherein the supplied power is, on average, a voltage of less than half of a rated voltage of the DC motor;rotating at least one gear in a set of gears;rotating a roller tube operably connected to a shade when at least one of either the motor operates and the shade is manually moved;providing a counterbalance assembly operably connected to the roller tube and configured to provide a counterbalance force to the roller tube;wherein the set of gears is part of a mechanical connection between the DC motor and the roller tube;wherein the roller tube rotates fewer times than revolutions of an output shaft of the motor. 17. The method of claim 16, wherein the maximum average voltage is about 9.6 volts and the rated voltage of the DC motor about 24 volts. 18. The method of claim 16, wherein the maximum average voltage is about 4.8 volts and the rated voltage of the DC motor is about 24 volts to 12 volts. 19. The method of claim 16, wherein the output shaft of the motor rotates about 40 times to 20 times for each rotation of the tube. 20. The method of claim 16, wherein the DC power is supplied by a DC power source positioned within the roller tube. 21. The method of claim 16, wherein the DC motor rotates with the roller tube. 22. The method of claim 16, wherein a gear system operatively connects an output of the DC motor to the roller tube, wherein the gear system has a sufficiently low enough gear ratio to allow manual movement of the shade without breaking the gear system. 23. The method of claim 16, wherein the set of gears has between about a 40:1 to a 20:1 gear ratio. 24. The method of claim 16, wherein a DC power source that supplies the DC power to the DC motor has a maximum average voltage that is between about 40% and about 20% of the rated voltage of the DC motor. 25. The method of claim 16, wherein the counterbalance assembly includes at least one spring. 26. The method of claim 16, wherein the counterbalance assembly includes one or more springs, wherein a first end of the one or more springs rotates with the roller tube, whereas a second end of the one or more springs remains stationary as the roller tube rotates. 27. The method of claim 16 wherein the DC motor is positioned within a first end of the roller tube, and the counterbalance assembly is positioned within a second end of the roller tube. 28. A method of configuring a roller shade, comprising; operably attaching a shade to a roller tube;operatively connecting a DC motor having a rated voltage to the roller tube such that the motor rotates the roller tube;operatively connecting a counterbalance assembly to the roller tube;providing a counterbalance force to the roller tube by the counterbalance assembly;providing DC power from a DC power source to the motor at a maximum average voltage;wherein the maximum average voltage the DC power source supplies the DC motor is less than half the rated voltage of the DC motor. 29. A window shade comprising: a DC motor having a rated voltage;a shade operatively connected to the DC motor;a power source operatively connected to the DC motor;a counterbalance assembly operably connected to the shade;the counterbalance assembly configured to provide a counterbalance force to the shade;wherein the power source has a maximum average voltage;wherein the maximum average voltage of the power source is less than half of the rated voltage of the DC motor;wherein when power is supplied from the power source to the DC motor the DC motor performs at least one of either opening and closing the shade. 30. A window shade comprising: a DC motor having a rated voltage;a shade operatively connected to the DC motor;a power source operatively connected to the DC motor;a counterbalance assembly operably connected to the shade;the counterbalance assembly configured to provide a counterbalance force to the shade;wherein the power source has a maximum average voltage,wherein the DC motor has a rated voltage of 12 volts to 24 volts,wherein the power source is formed of four to eight batteries,wherein the maximum average voltage of the power source is less than half of the rated voltage of the DC motor, andwherein when power is supplied from the power source to the DC motor, the DC motor either opens or closes the shade.
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