Patent Application
20130312920
The present invention relates to a motorized shade. Specifically, the present invention relates to a high-efficiency roller shade.
One ubiquitous form of window treatment is the roller shade. A common window covering during the 19th century, a roller shade is simply a rectangular panel of fabric, or other material, that is attached to a cylindrical, rotating tube. The shade tube is mounted near the header of the window such that the shade rolls up upon itself as the shade tube rotates in one direction, and rolls down to cover the a desired portion of the window when the shade tube is rotated in the opposite direction.
A control system, mounted at one end of the shade tube, can secure the shade at one or more positions along the extent of its travel, regardless of the direction of rotation of the shade tube. Simple mechanical control systems include ratchet-and-pawl mechanisms, friction brakes, clutches, etc. To roll the shade up and down, and to position the shade at intermediate locations along its extend of travel, ratchet-and-pawl and friction brake mechanisms require the lower edge of the shade to be manipulated by the user, while clutch mechanisms include a control chain that is manipulated by the user.
Not surprisingly, motorization of the roller shade was accomplished, quite simply, by replacing the simple, mechanical control system with an electric motor that is directly coupled to the shade tube. The motor may be located inside or outside the shade tube, is fixed to the roller shade support and is connected to a simple switch, or, in more sophisticated applications, to a radio frequency (RF) or infrared (IR) transceiver, that controls the activation of the motor and the rotation of the shade tube.
Many known motorized roller shades provide power, such as 120 VAC, 220/230 VAC 50/60 Hz, etc., to the motor and control electronics from the facility in which the motorized roller shade is installed. Recently-developed battery-powered roller shades provide installation flexibility by removing the requirement to connect the motor and control electronics to facility power. The batteries for these roller shades are typically mounted within, above, or adjacent to the shade mounting bracket, headrail or fascia. Unfortunately, these battery-powered systems suffer from many drawbacks, including, for example, high levels of self-generated noise, inadequate battery life, inadequate or nonexistent counterbalancing capability, inadequate or nonexistent manual operation capability, inconvenient installation requirements, and the like.
Embodiments of the present invention provide a roll shade system including a motor configured to remain stationary during operation of the motor, a support shaft supporting the motor wherein the support shaft is configured to remain stationary during operation of the motor, and a roll shade tube configured to be rotatable about the motor and the support shaft during operation of the motor. In some embodiments, the roll shade system may further include stationary components including a wiring connector, an input wiring system, a bearing, an antenna, a coaxial cable, a motor controller, a counterbalance spring. The roll shade system also includes rotatable components including a bearing housing and one or more O-rings.
Another embodiment includes a method for manufacturing a roll shade system, include fixedly connecting a motor to a motor tube wherein the motor and the motor tube are stationary during operation of the motor; fixedly connecting the motor tube to a supporting shaft wherein the motor tube and the supporting shaft are stationary during operation of the motor; and enclosing the motor tube with a roll shade tube wherein the roll shade tube is rotatable about the motor tube during operation of the motor.
In still another embodiment is provided a system for use with a motor in a roll shade, including means for enclosing the motor; means for connecting the motor and a cover; means for supply a power to the roll shade to operate the motor; means for keeping the motor stationary during operation of the motor; means for rotating the cover during operation of the motor; and means for mounting the roll shade in a wall.
There has thus been outlined, rather broadly, certain embodiments of the invention in order that the detailed description thereof herein may be better understood, and in order that the present contribution to the art may be better appreciated. There are, of course, additional embodiments of the invention that will be described below and which will form the subject matter of the claims appended hereto.
In this respect, before explaining at least one embodiment of the invention in detail, it is to be understood that the invention is not limited in its application to the details of construction and to the arrangements of the components set forth in the following description or illustrated in the drawings. The invention is capable of embodiments in addition to those described and of being practiced and carried out in various ways. Also, it is to be understood that the phraseology and terminology employed herein, as well as the abstract, are for the purpose of description and should not be regarded as limiting.
As such, those skilled in the art will appreciate that the conception upon which this disclosure is based may readily be utilized as a basis for the designing of other structures, methods and systems for carrying out the several purposes of the present invention. It is important, therefore, that the claims be regarded as including such equivalent constructions insofar as they do not depart from the spirit and scope of the present invention.
The invention will now be described with reference to the drawing figures, in which like reference numerals refer to like parts throughout. The term “shade” as used herein describes any flexible material, such as a shade, a curtain, a screen, etc., that can be deployed from, and retrieved onto, a storage tube.
Embodiments of the present invention provide a remote controlled motorized roller shade in which the batteries, DC gear motor, control circuitry are entirely contained within a shade tube that is supported by bearings. Two support shafts are attached to respective mounting brackets, and the bearings rotatably couple the shade tube to each support shaft. The output shaft of the DC gear motor is fixed to one of the support shafts, while the DC gear motor housing is mechanically coupled to the shade tube. Accordingly, operation of the DC gear motor causes the motor housing to rotate about the fixed DC gear motor output shaft, which causes the shade tube to rotate about the fixed DC gear motor output shaft as well. Because these embodiments do not require external wiring for power or control, great flexibility in mounting, and re-mounting, the motorized roller shade is provided.
Encapsulation of the motorization and control components within the shade tube, combined with the performance of the bearings and enhanced battery capacity of the DC gear motor configuration described above, greatly increases the number of duty cycles provided by a single set of batteries and provides a highly efficient roller shade. Additionally, encapsulation advantageously prevents dust and other contaminants from entering the electronics and the drive components.
In an alternative embodiment, the batteries may be mounted outside of the shade tube, and power may be provided to the components located within the shade tube using commutator or slip rings, induction techniques, and the like. Additionally, the external batteries may be replaced by any external source of DC power, such as, for example, an AC/DC power converter, a solar cell, etc.
Generally, motorized roller shade 20 includes a shade 22 and a motorized tube assembly 30. In a preferred embodiment, motorized roller shade 20 also includes a bottom bar 28 attached to the bottom of shade 22. In one embodiment, bottom bar 28 provides an end-of-travel stop, while in an alternative embodiment, end-of-travel stops 24 and 26 may be provided. As discussed in more detail below, in preferred embodiments, all of the components necessary to power and control the operation of the motorized roller shade 20 are advantageously located within motorized tube assembly 30.
The electrical power connector 42 includes a terminal 41 that couples to the power supply unit 80, and power cables 43 that connect to the circuit board(s) located within the circuit board housing 44. Terminal 41 includes positive and negative connectors that mate with cooperating positive and negative connectors of power supply unit 80, such as, for example, plug connectors, blade connectors, a coaxial connector, etc. In a preferred embodiment, the positive and negative connectors do not have a preferred orientation. The electrical power connector 42 is mechanically coupled to the inner surface of the shade tube 32 using a press fit, an interference fit, a friction fit, a key, adhesive, etc.
The circuit board housing 44 includes an end cap 45 and a housing body 46 within which at least one circuit board 47 is mounted. In the depicted embodiment, two circuit boards 47 are mounted within the circuit board housing 44 in an orthogonal relationship. Circuit boards 47 generally include all of the supporting circuitry and electronic components necessary to sense and control the operation of the motor 50, manage and/or condition the power provided by the power supply unit 80, etc., including, for example, a controller or microcontroller, memory, a wireless receiver, etc. In one embodiment, the microcontroller is an Microchip 8-bit microcontroller, such as the PIC18F25K20, while the wireless receiver is a Micrel QwikRadio® receiver, such as the MICRF219. The microcontroller may be coupled to the wireless receiver using a local processor bus, a serial bus, a serial peripheral interface, etc. In another embodiment, the wireless receiver and microcontroller may be integrated into a single chip, such as, for example, the Zensys ZW0201 Z-Wave Single Chip, etc.
The antenna for the wireless receiver may be mounted to the circuit board or located, generally, inside the circuit board housing 44. Alternatively, the antenna may be located outside the circuit board housing 44, including, for example, the outer surface of the circuit board housing 44, the inner surface of the shade tube 32, the outer surface of the shade tube 32, the bearing housing 58, etc. In a further embodiment, at least a portion of the outer surface of the shade tube 32 may act as the antenna. The circuit board housing 44 may be mechanically coupled to the inner surface of the shade tube 32 using, for example, a press fit, an interference fit, a friction fit, a key, adhesive, etc.
In another embodiment, a wireless transmitter is also provided, and information relating to the status, performance, etc., of the motorized roller shade 20 may be transmitted periodically to a wireless diagnostic device, or, preferably, in response to a specific query from the wireless diagnostic device. In one embodiment, the wireless transmitter is a Micrel QwikRadio® transmitter, such as the MICRF102. A wireless transceiver, in which the wireless transmitter and receiver are combined into a single component, may also be included, and in one embodiment, the wireless transceiver is a Micrel RadioWire® transceiver, such as the MICRF506. In another embodiment, the wireless transceiver and microcontroller may be integrated into a single module, such as, for example, the Zensys ZM3102 Z-Wave Module, etc. The functionality of the microcontroller, as it relates to the operation of the motorized roller shade 20, is discussed in more detail below.
In an alternative embodiment, the shade tube 32 includes one or more slots to facilitate the transmission of wireless signal energy to the wireless receiver, and from the wireless transmitter, if so equipped. For example, if the wireless signal is within the radio frequency (RF) band, the slot may be advantageously matched to the wavelength of the signal. For one RF embodiment, the slot is ⅛″ wide and 2½″ long; other dimensions are also contemplated.
The DC motor 50 is electrically connected to the circuit board 47, and has an output shaft that is connected to the input shaft of the motor gear reducing assembly 52. The DC motor 50 may also be mechanically coupled to the circuit board housing body 46 using, for example, a press fit, an interference fit, a friction fit, a key, adhesive, mechanical fasteners, etc. In various embodiments of the present invention, DC motor 50 and motor gear reducing assembly 52 are provided as a single mechanical package, such as the DC gear motors manufactured by Bühler Motor Inc.
In one preferred embodiment, DC gear motor 55 includes a 24V DC motor and a two-stage planetary gear system with a 40:1 ratio, such as, for example, Baler DC Gear Motor 1.61.077.423, and is supplied with an average battery voltage of 9.6Vavg provided by an eight D-cell battery stack. Other alternative embodiments are also contemplated by the present invention. However, this preferred embodiment offers particular advantages over many alternatives, including, for example, embodiments that include smaller average battery voltages, smaller battery sizes, 12V DC motors, three-stage planetary gear systems, etc.
For example, in this preferred embodiment, the 24V DC gear motor 55 draws a current of about 0.1 A when supplied with a battery voltage of 9.6Vavg. However, under the same torsional loading and output speed (e.g., 30 rpm), a 12V DC gear motor with a similar gear system, such as, e.g., Bühler DC Gear Motor 1.61.077.413, will draw a current of about 0.2 A when supplied with a battery voltage of 4.8Vavg. Assuming similar motor efficiencies, the 24V DC gear motor supplied with 9.6Vavg advantageously draws about 50% less current than the 12V DC gear motor supplied with 4.8Vavg while producing the same power output.
In one embodiment, the DC gear motor 55 includes a 24V DC motor and a two-stage planetary gear system with a 40:1 ratio, while the operating voltage is provided by a six cell battery stack. In another embodiment, the DC gear motor 55 includes a 24V DC motor and a two-stage planetary gear system with a 22:1 ratio, while the operating voltage is provided by a four cell battery stack; counterbalancing is also provided.
In preferred embodiments of the present invention, the rated voltage of the DC gear motor is much greater than the voltage produced by the batteries, by a factor of two or more, for example, causing the DC motor to operate at a reduced speed and torque rating, which advantageously eliminates undesirable higher frequency noise and draws lower current from the batteries, thereby improving battery life. In other words, applying a lower-than-rated voltage to the DC gear motor causes the motor to run at a lower-than-rated speed to produce quieter operation and longer battery life as compared to a DC gear motor running at its rated voltage, which draws similar amperage while producing lower run cycle times to produce equivalent mechanical power. In the embodiment described above, the 24V DC gear motor, running at lower voltages, enhances the cycle life of the battery operated roller shade by about 20% when compared to a 12V DC gear motor using the same battery capacity. Alkaline, zinc and lead acid batteries may provide better performance than lithium or nickel batteries, for example.
In another example, four D-cell batteries produce an average battery voltage of about 4.8Vavg, while eight D-cell batteries produce an average battery voltage of about 9.6Vavg. Clearly, embodiments that include an eight D-cell battery stack advantageously provide twice as much battery capacity than those embodiments that include a four D-cell battery stack. Of course, smaller battery sizes, such as, e.g., C-cell, AA-cell, etc., offer less capacity than D-cells.
In a further example, supplying a 12V DC gear motor with 9.6Vavg increases the motor operating speed, which requires a higher gear ratio in order to provide the same output speed as the 24V DC gear motor discussed above. In other words, assuming the same torsional loading, output speed (e.g., 30 rpm) and average battery voltage (9.6Vavg), the motor operating speed of the 24V DC gear motor will be about 50% of the motor operating speed of the 12V DC gear motor. The higher gear ratio typically requires an additional planetary gear stage, which reduces motor efficiency, increases generated noise, reduces backdrive performance and may require a more complex motor controller. Consequently, those embodiments that include a 24V DC gear motor supplied with 9.6Vavg offer higher efficiencies and less generated noise.
In one embodiment, the shaft 51 of DC motor 50 protrudes into the circuit board housing 44, and a multi-pole magnet 49 is attached to the end of the motor shaft 51. A magnetic encoder (not shown for clarity) is mounted on the circuit board 47 to sense the rotation of the multi-pole magnet 49, and outputs a pulse for each pole of the multi-pole magnet 49 that moves past the encoder. In a preferred embodiment, the multi-pole magnet 49 has eight poles and the gear reducing assembly 52 has a gear ratio of 30:1, so that the magnetic encoder outputs 240 pulses for each revolution of the shade tube 32. The controller advantageously counts these pulses to determine the operational and positional characteristics of the shade, curtain, etc. Other types of encoders may also be used, such as optical encoders, mechanical encoders, etc.
The number of pulses output by the encoder may be associated with a linear displacement of the shade 22 by a distance/pulse conversion factor or a pulse/distance conversion factor. In one embodiment, this conversion factor is constant regardless of the position of shade 22. For example, using the outer diameter d of the shade tube 32, e.g., 1⅝ inches (1.625 inches), each rotation of the shade tube 32 moves the shade 22 a linear distance of π*d, or about 5 inches. For the eight-pole magnet 49 and 30:1 gear reducing assembly 52 embodiment discussed above, the distance/pulse conversion factor is about 0.02 inches/pulse, while the pulse/distance conversion factor is about 48 pulses/inch. In another example, the outer diameter of the fully-wrapped shade 22 may be used in the calculation. When a length of shade 22 is wrapped on shade tube 32, such as 8 feet, the outer diameter of the wrapped shade 22 depends upon the thickness of the shade material. In certain embodiments, the outer diameter of the wrapped shade 22 may be as small as 1.8 inches or as large as 2.5 inches. For the latter case, the distance/pulse conversion factor is about 0.03 inches/pulse, while the pulse/distance conversion factor is about 30 pulses/inch. Of course, any diameter between these two extremes, i.e., the outer diameter of the shade tube 32 and the outer diameter of the wrapped shade 22, may be used. These approximations generate an error between the calculated linear displacement of the shade and the true linear displacement of the shade, so an average or intermediate diameter may preferably reduce the error. In another embodiment, the conversion factor may be a function of the position of the shade 22, so that the conversion factor depends upon the calculated linear displacement of the shade 22.
In various preferred embodiments discussed below, the position of the shade 22 is determined and controlled based on the number of pulses that have been detected from a known position of shade 22. While the open position is preferred, the closed position may also be used as the known position. In order to determine the full range of motion of shade 22, for example, the shade may be electrically moved to the open position, an accumulated pulse counter may be reset and the shade 22 may then be moved to the closed position, manually and/or electrically. The total number of accumulated pulses represents the limit of travel for the shade, and any desirable intermediate positions may be calculated based on this number.
For example, an 8 foot shade that moves from the open position to the closed position may generate 3840 pulses, and various intermediate positions of the shade 22 can be advantageously determined, such as, 25% open, 50% open, 75% open, etc. Quite simply, the number of pulses between the open position and the 75% open position would be 960, the number of pulses between the open position and the 50% open position would be 1920, and so on. Controlled movement between these predetermined positions is based on the accumulated pulse count. For example, at the 50% open position, this 8 foot shade would have an accumulated pulse count of 1920, and controlled movement to the 75% open position would require an increase in the accumulated pulse count to 2880. Accordingly, movement of the shade 22 is determined and controlled based on accumulating the number of pulses detected since the shade 22 was deployed in the known position. An average number of pulses/inch may be calculated based on the total number of pulses and the length of shade 22, and an approximate linear displacement of the shade 22 can be calculated based on the number of pulses accumulated over a given time period. In this example, the average number of pulses/inch is 40, so movement of the shade 22 about 2 inches would generate about 80 pulses. Positional errors are advantageously eliminated by resetting the accumulated pulse counter to zero whenever the shade 22 is moved to the known position.
A mount 54 supports the DC gear motor 55, and may be mechanically coupled to the inner surface of the shade tube 32. In one embodiment, the outer surface of the mount 54 and the inner surface of the shade tube 32 are smooth, and the mechanical coupling is a press fit, an interference fit, a friction fit, etc. In another embodiment, the outer surface of the mount 54 includes several raised longitudinal protrusions that mate with cooperating longitudinal recesses in the inner surface of the shade tube 32. In this embodiment, the mechanical coupling is keyed; a combination of these methods is also contemplated. If the frictional resistance is small enough, the motor/controller unit 40 may be removed from the shade tube 32 for inspection or repair; in other embodiments, the motor/controller unit 40 may be permanently secured within the shade tube 32 using adhesives, etc.
As described above, the circuit board housing 44 and the mount 54 may be mechanically coupled to the inner surface of the shade tube 32. Accordingly, at least three different embodiments are contemplated by the present invention. In one embodiment, the circuit board housing 44 and the mount 54 are both mechanically coupled to the inner surface of the shade tube 32. In another embodiment, only the circuit board housing 44 is mechanically coupled to the inner surface of the shade tube 32. In a further embodiment, only the mount 54 is mechanically coupled to the inner surface of the shade tube 32.
The output shaft of the DC gear motor 55 is fixed to the support shaft 60, either directly (not shown for clarity) or through an intermediate shaft 62. When the motorized roller shade 20 is installed, support shaft 60 is attached to a mounting bracket that prevents the support shaft 60 from rotating. Because (a) the output shaft of the DC gear motor 55 is coupled to the support shaft 60 which is fixed to the mounting bracket, and (b) the DC gear motor 55 is mechanically-coupled to the shade tube, operation of the DC gear motor 55 causes the DC gear motor 55 to rotate about the fixed output shaft, which causes the shade tube 32 to rotate about the fixed output shaft as well.
Bearing housing 58 includes one or more bearings 64 that are rotatably coupled to the support shaft 60. In a preferred embodiment, bearing housing 58 includes two rolling element bearings, such as, for example, spherical ball bearings; each outer race is attached to the bearing housing 58, while each inner race is attached to the support shaft 60. In a preferred embodiment, two ball bearings are spaced about ⅜″ apart giving a total support land of about 0.8″ or 20 mm; in an alternative embodiment, the intra-bearing spacing is about twice the diameter of support shaft 60. Other types of low-friction bearings are also contemplated by the present invention.
The motor/controller unit 40 may also include counterbalancing. In a preferred embodiment, motor/controller unit 40 includes a fixed perch 56 attached to intermediate shaft 62. In this embodiment, mount 54 functions as a rotating perch, and a counterbalance spring 63 (not shown in
In the depicted embodiment, the outer end cap 86 is removable and the inner cap 84 is fixed. In other embodiments, the inner end cap 84 may be removable and the outer end cap 86 may be fixed, both end caps may be removable, etc. The removable end cap(s) may be threaded, slotted, etc.
The outer end cap 86 also includes a positive terminal that is coupled to the battery tube 82. The inner end cap 84 includes a positive terminal coupled to the battery tube 82, and a negative terminal coupled to a conduction spring 85. When a battery stack 92, including at least one battery, is installed in the battery tube 82, the positive terminal of the outer end cap 86 is electrically coupled to the positive terminal of one of the batteries in the battery stack 92, and the negative terminal of the inner end cap 84 is electrically coupled to the negative terminal of another one of the batteries in the battery stack 92. Of course, the positive and negative terminals may be reversed, so that the conduction spring 85 contacts the positive terminal of one of the batteries in the battery stack 92, etc.
The outer end cap 86 and the inner end cap 84 are mechanically coupled to the inner surface of the shade tube 32. In one embodiment, the outer surface of the mount 84 and the inner surface of the shade tube 32 are smooth, and the mechanical coupling is a press fit, an interference fit, a friction fit, etc. In another embodiment, the outer surface of the mount 84 includes several raised longitudinal protrusions that mate with cooperating longitudinal recesses in the inner surface of the shade tube 32. In this embodiment, the mechanical coupling is keyed; a combination of these methods is also contemplated. Importantly, the frictional resistance should be small enough such that the power supply unit 80 can be removed from the shade tube 32 for inspection, repair and battery replacement.
In a preferred embodiment, the battery stack 92 includes eight D-cell batteries connected in series to produce an average battery stack voltage of 9.6Vavg. Other battery sizes, as well as other DC power sources disposable within battery tube 82, are also contemplated by the present invention.
After the motor/controller unit 40 and power supply unit 80 are built up as subassemblies, final assembly of the motorized roller shade 20 is quite simple. The electrical connector 42 is fitted within the inner cavity of shade tube 32 to a predetermined location; power cables 43 has a length sufficient to permit the remaining sections of the motor/controller unit 40 to remain outside the shade tube 32 until the electrical connector 42 is properly seated. The remaining sections of the motor/controller unit 40 are then fitted within the inner cavity of shade tube 32, such that the bearing housing 58 is approximately flush with the end of the shade tube 32. The power supply unit 80 is then inserted into the opposite end until the positive and negative terminals of the inner end cap 84 engage the terminal 41 of the electrical connector 42. The outer end cap 86 should be approximately flush with end of the shade tube 32.
In the alternative embodiment depicted in
In the alternative embodiment depicted in
In a further alternative embodiment, the batteries may be mounted outside of the shade tube, and power may be provided to the components located within the shade tube using commutator or slip rings, induction techniques, and the like. Additionally, the external batteries may be replaced by any external source of DC power, such as, for example, an AC/DC power converter, a solar cell, etc.
In one embodiment, the support shafts 88 are slidingly-attached to the inner race of ball bearings 90 so that the support shafts 88 may be displaced along the rotational axis of the shade tube 32. This adjustability advantageously allows an installer to precisely attach the end of the support shafts 88 to the respective mounting bracket by adjusting the length of the exposed portion of the support shafts 88. In a preferred embodiment, outer end cap 86 and housing 95 may provide approximately 0.5″ of longitudinal movement for the support shafts 88. Additionally, mounting brackets 5, 7, 15 and 17 are embossed so that the protruding portion of the mounting bracket will only contact the inner race of bearings 64 and 90 and will not rub against the edge of the shade or the shade tube 32 if the motorized roller shade 20 is installed incorrectly. In a preferred embodiment, the bearings may accommodate up to 0.125″ of misalignment due to installation errors without a significant reduction in battery life.
In an alternative embodiment, the microcontroller receives control signals from a wired remote control. These control signals may be provided to the microcontroller in various ways, including, for example, over power cables 97, over additional signal lines that are accommodated by power coupling 93, over additional signal lines that are accommodated by a control signal coupling (not shown in FIGS. 9A,B for clarity), etc.
Further embodiments of the present invention are presented in
Alternative embodiments of the present invention are depicted in
Additionally, by enclosing the various components of the motorized roller shade within the shade tube, the blind or shade material can be extended to the ends of the tube, which advantageously reduces the width of the gap between the edge of the shade and the vertical surface of the opening in which the motorized roller shade is installed. For example, this gap can be reduced from 1 inch or more to about 7/16 of an inch or less on each side of the shade. The gaps can be the same width as well, which increases the ascetic appeal of the motorized roller shade. Additional light-blocking coverings, such as vertical tracks, are therefore not necessary.
Motorized roller shade 20 may be controlled manually and/or remotely using a wireless or wired remote control. Generally, the microcontroller executes instructions stored in memory that sense and control the motion of DC gear motor 55, decode and execute commands received from the remote control, monitor the power supply voltage, etc. More than one remote control may be used with a single motorized roller shade 20, and a single remote control may be used with more than one motorized roller shade 20.
During the manual control portion 410 of method 400, a manual movement of the shade 22 is detected (412), a displacement associated with the manual movement is determined (414), and, if the displacement is less than a maximum displacement, the shade 22 is moved to a different position by rotating the shade tube 32 using the DC gear motor 55.
In one embodiment, the microcontroller detects a manual downward movement of the shade 22 by monitoring a reed switch, while in an alternative embodiment, the microcontroller simply monitors the encoder. In a preferred embodiment, after the initial downward movement or tug is detected by the reed switch, the microcontroller begins to count the encoder pulses generated by the rotation of the shade tube 32 relative to the fixed motor shaft 51. When the encoder pulses cease, the downward movement has stopped, and the displacement of the shade 22 is determined and then compared to a maximum displacement. In one embodiment, the shade displacement is simply the total number of encoder pulses received by the microcontroller, and the maximum displacement is a predetermined number of encoder pulses. In another embodiment, the microcontroller converts the encoder pulses to a linear distance, and then compares the calculated linear distance to a maximum displacement, such as 2 inches.
In one example, the maximum number of encoder pulses is 80, which may represent approximately 2 inches of linear shade movement in certain embodiments. If the total number of encoder pulses received by the microcontroller is greater than or equal to 80, then the microcontroller does not energize the DC gear motor 55 and the shade 22 simply remains at the new position. On the other hand, if the total number of encoder pulses received by the microcontroller is less than 80, then the microcontroller moves the shade 22 to a different position by energizing the DC gear motor 55 to rotate the shade tube 32. After the microcontroller determines that the shade 22 has reached the different position, the DC gear motor 55 is de-energized.
In preferred embodiments, the microcontroller maintains the current position of the shade 22 by accumulating the number of encoder pulses since the shade 22 was deployed in the known position. As described above, the known (e.g., open) position has an accumulated pulse count of 0, and the various intermediate positions each have an associated accumulated pulse count, such as 960, 1920, etc. When the shade 22 moves in the downward direction, the microcontroller increments the accumulated pulse counter, and when the shade 22 moves in the upward direction, the microcontroller decrements the accumulated pulse counter. Each pulse received from the encoder increments or decrements the accumulated pulse counter by one count. Of course, the microcontroller may convert each pulse count to a linear distance, and perform these calculations in units of inches, millimeters, etc.
In a preferred embodiment, limited manual downward movement of the shade 22 causes the microcontroller to move the shade to a position located directly above the current position, such as 25% open, 50% open, 75% open, 100% open, etc. Each of these predetermined positions has an associated accumulated pulse count, and the microcontroller determines that the shade 22 has reached the different position by comparing the value in the accumulated pulse counter to the accumulated pulse count of the predetermined position; when the accumulated pulse counter equals the predetermined position accumulated pulse count, the shade 22 has reached the different position.
Other sets of predetermined positions are also contemplated by the present invention, such as 0% open, 50% open, 100% open; 0% open, 33% open, 66% open, 100% open; 0% open, 10% open, 20% open, 30% open, 40% open, 50% open, 60% open, 70% open, 80% open, 90% open, 100% open; etc. Advantageously, the accumulated pulse count associated with each position may be reprogrammed by the user to set one or more custom positions.
Manual upward movement of the shade 22 may be detected and measured using an encoder that senses direction as well as rotation, such as, for example, an incremental rotary encoder, a relative rotary encoder, a quadrature encoder, etc. In other embodiments, limited upward movement of the shade 22 causes the microcontroller to move the shade to a position located above the current position, etc.
During the remote control portion 420 of method 400, a command is received (422) from a remote control, and the shade 22 is moved (424) to a position associated with the command.
In preferred embodiments, the remote control is a wireless transmitter that has several shade position buttons that are associated with various commands to move the shade 22 to different positions. The buttons activate switches that may be electro-mechanical, such as, for example, momentary contact switches, etc, electrical, such as, for example, a touch pad, a touch screen, etc. Upon activation of one of these switches, the wireless transmitter sends a message to the motorized roller shade 20 that includes a transmitter identifier and a command associated with the activated button. In preferred embodiments, the remote control is pre-programmed such that each shade position button will command the shade to move to a predetermined position. Additionally, remote control functionality may be embodied within a computer program, and this program may be advantageously hosted on a wireless device, such as an iPhone. The wireless device may communicate directly with the motorized roller shade 20, or though an intermediate gateway, bridge, router, base station, etc.
In these preferred embodiments, the motorized roller shade 20 includes a wireless receiver that receives, decodes and sends the message to the microcontroller for further processing. The message may be stored within the wireless receiver and then sent to the microcontroller immediately after decoding, or the message may be sent to the microcontroller periodically, e.g., upon request by the microcontroller, etc. One preferred wireless protocol is the Z-Wave Protocol, although other wireless communication protocols are contemplated by the present invention.
After the message has been received by the microcontroller, the microcontroller interprets the command and sends an appropriate control signal to the DC gear motor 55 to move the shade in accordance with the command. As discussed above, the DC gear motor 55 and shade tube 32 rotate together, which either extends or retracts the shade 22. Additionally, the message may be validated prior to moving the shade, and the command may be used during programming to set a predetermined deployment of the shade.
For example, if the accumulated pulse counter is 3840 and the shade 22 is 0% open, receiving a 50% open command will cause the microcontroller to energize the DC gear motor 55 to move the shade 22 upwards to this commanded position. As the shade 22 is moving, the microcontroller decrements the accumulated pulse counter by one count every time a pulse is received from the encoder, and when the accumulated pulse counter reaches 1920, the microcontroller de-energizes the DC gear motor 55, which stops the shade 22 at the 50% open position. In one embodiment, if a different command is received while the shade 22 is moving, the microcontroller may stop the movement of the shade 22. For example, if the shade 22 is moving in an upward direction and a close (0% open) command is received, the microcontroller may de-energize the DC gear motor 55 to stop the movement of the shade 22. Similarly, if the shade 22 is moving in a downward direction and a 100% open command is received, the microcontroller may de-energize the DC gear motor 55 to stop the movement of the shade 22. Other permutations are also contemplated by the present invention, such as moving the shade 22 to the predetermined position associated with the second command, etc.
In a preferred embodiment, a command to move the shade to the 100% open position resets the accumulated pulse counter to 0, and the microcontroller de-energizes the DC gear motor 55 when the encoder pulses cease. Importantly, an end-of-travel stop, such as bottom bar 28, stops 24 and 26, and the like, engage corresponding structure on the mounting brackets when the shade 22 has been retracted to the 100% open position. This physical engagement stops the rotation of the shade tube 32 and stalls the DC gear motor 55. The microcontroller senses that the encoder has stopped sending pulses, e.g., for one second, and de-energizes the DC gear motor 55. When the shade 22 is moving in the other direction, the microcontroller may check an end-of-travel pulse count in order to prevent the shade 22 from extending past a preset limit.
In other embodiments, the movement of the shade 22 may simply be determined using relative pulse counts. For example, if the current position of the shade 22 is 100% open, and a command to move the shade 22 to the 50% open position is received, the microcontroller may simply energize the DC gear motor 55 until a certain number of pulses have been received, by the microcontroller, from the encoder. In other words, the pulse count associated with predetermined position is relative to the predetermined position located directly above or below, rather than the known position.
For the preferred embodiment, programming a motorized roller shade 20 to accept commands from a particular remote control depicted in
In other embodiments, a brake may be applied to the motorized roller shade 20 to stop the movement of the shade 22, as well as to prevent undesirable rotation or drift after the shade 22 has been moved to a new position. In one embodiment, the microcontroller connects the positive terminal of the DC gear motor 55 to the negative terminal of DC gear motor 55, using one or more electro-mechanical switches, power FETS, MOSFETS, etc., to apply the brake. In another embodiment, the positive and negative terminals of the DC gear motor 55 may be connected to ground, which may advantageously draw negligible current. In a negative ground system, the negative terminal of the DC gear motor 55 is already connected to ground, so the microcontroller only needs to connect the positive terminal of the DC gear motor 55 to ground. Conversely, in a positive ground system, the positive terminal of the DC gear motor 55 is already connected to ground, so the microcontroller only needs to connect the negative terminal of the DC gear motor 55 to ground.
Once the positive and negative terminals of the DC gear motor 55 are connected, as described above, any rotation of the shade tube 32 will cause the DC gear motor 55 to generate a voltage, or counter electromotive force, which is fed back into the DC gear motor 55 to produce a dynamic braking effect. Other braking mechanisms are also contemplated by the present invention, such as friction brakes, electro-mechanical brakes, electro-magnetic brakes, permanent-magnet single-face brakes, etc. The microcontroller releases the brake after a manual movement of the shade 22 is detected, as well as prior to energizing the DC gear motor 55 to move the shade 22.
In an alternative embodiment, after the shade 22 has been moved to the new position, the positive or negative terminal of the DC gear motor 55 is connected to ground to apply the maximum amount of braking force and bring the shade 22 to a complete stop. The microcontroller then connects the positive and negative terminals of the DC gear motor 55 together via a low-value resistor, using an additional MOSFET, for example, to apply a reduced amount of braking force to the shade 22, which prevents the shade 22 from drifting but allows the user to tug the shade 22 over long displacements without significant resistance. In this embodiment, the brake is not released after the manual movement of the shade is detected in order to provide a small amount of resistance during the manual movement.
One example of a motorized roller shade 20 according to various embodiments of the present invention is described hereafter. The shade tube 32 is an aluminum tube having an outer diameter of 1.750 inches and a wall thickness of 0.062 inches. Bearings 64 and 90 each include two steel ball bearings, 30 mm OD×10 mm ID×9=wide, that are spaced 0.250″ apart. In other words, a total of four ball bearings, two at each end of the motorized roller shade 20, are provided.
The DC gear motor 55 is a Bühler DC gear motor 1.61.077.423, as discussed above. The battery tube 82 accommodates 6 to 8 D-cell alkaline batteries, and supplies voltages ranges from 6 V to 12 V, depending on the number of batteries, shelf life, cycles of the shade tube assembly, etc. The shade 22 is a flexible fabric that is 34 inches wide, 60 inches long, 0.030 inches thick and weighs 0.100 lbs/sq. ft, such as, for example, Phifer Q89 Wicker/Brownstone. An aluminum circularly-shaped curtain bar 28, having a diameter of 0.5 inches, is attached to the shade 22 to provide taughtness as well as an end-of-travel stop. The counterbalance spring 63 is a clock spring that provides 1.0 to 1.5 in-lb of counterbalance torque to the shade 22 after it has reached 58 inches of downward displacement. In this example, the current drawn by the Bühler DC gear motor ranges between 0.06 and 0.12 amps, depending on friction.
If it is determined in step 3625 that a valid transmitter is stored in memory, decode button code step 3650 begins. In step 3655, it is determined whether the “Up” button is detected; if so control flows to subroutine MoveUp 480, otherwise flow continues to step 3660, where it is determined whether the “Down” button is detected. If the Down button is detected, subroutine MoveDown 490 is invoked; otherwise, flow continues to step 3665, where it is determined if the “75%” button is detected, in which case subroutine Move75 470 begins. If the 75% button is not detected, it is determined in step 3670 if the “50%” button is detected. If so, subroutine Move50 460 is invoked and, if not, it is determined in step 3675 if the “25%” button is detected, in which case subroutine Move25 450 begins. If the “25%” button is not detected, flow continues to step 3615, as well as to step 3605 if in manual control.
In step 3680, it is determined whether the “LearnLimit,” Learn25,” “Learn50,” or “Learn75” flag is set and, if so, flow returns to step 3605 to monitor for messages. If not, it is determined in step 3685 whether a tug has occurred in the shade. If a tug has occurred, the dynamic brake is released at step 3690 and flow then continues on to subroutine TugMove 440 (
If the tug timer has expired and shade displacement is not greater than two inches, as determined in step 3725, a determination is made in step 3740 as to whether the shade is between the closed and 75% positions, in which case subroutine Move75 470 (
If it is determined in step 3812 that the Learn25 flag is not set, in step 3820 the shade moves down two inches and returns, and it is determined, in step 3822, whether the user is still pressing the 25% button. When the user stops pressing the 25% button, a shade tug is monitored in step 3824 and, when received, step 3826 determines whether a valid transmission is detected. Once a valid transmission is detected, it is determined in step 3828 if a tug was detected and, if a tug is detected, flags Learn25, Learn50, Learn75, and LearnLimit are set in step 3830, and control returns to the MainLoop 430. If a tug is not detected in step 3828, however, control returns to the MainLoop 430.
Returning to step 3804, if it is determined in that step that the shade is not at the 25% limit, it is determined in step 3832 whether the Learn25 flag is set and, if it is, the five second timer begins in step 3806, as discussed above. If the Learn25 flag is not set, however, it is determined in step 3834 if the shade is higher than the 25% position. If the shade is higher than the 25% position, the shade is moved in the downward direction toward the 25% position in step 3836, and it is determined in step 3838 if the shade is moving; if the shade is not moving, control returns to the MainLoop 430. As the shade is moved downward toward the 25% position in step 3836, it is determined, in step 3842, whether the 25% Button is being pressed and, if yes, it is determined whether the shade is moving in step 3838, described above. If, however, the 25% Button is not being pressed, it is determined, in step 3844, if the Up button is being pressed, in which case, shade movement is stopped in step 3846 and control returns to the MainLoop 430. If the Up button is not pressed, it is determined in step 3848 whether the Down, 50%, or 75% button is being pressed, in which case control returns to the MainLoop 430; otherwise, it is determined in step 3840 if the shade is still moving and, if so, the shade continues to move down and a determination is again made as to whether the 25% button is pressed, as described above for steps 3836 and 3842. If the shade is not moving, control returns to the MainLoop 430.
Referring again to step 3834, if it is determined that the shade position is not higher than 25%, the shade is moved in the upward direction toward the 25% position in step 3850. It is determined in step 3852 if the 25% Button is being pressed and, if yes, it is determined, in step 3854, whether the shade is moving. If the shade is moving, the determination of whether the 25% Button is being pressed continues in step 3852; if the shade is not moving, control returns to the MainLoop 430. If it is determined in step 3852 that the 25% Button is not being pressed, it is determined, in step 3856, if the Down button is pressed and, if it is, shade movement is stopped in step 3858 and control returns to the MainLoop 430. If, however, the Down button is not being pressed, it is determined, via step 3860, whether Up, 50%, or 75% buttons are being pressed; if so, control returns to the MainLoop 430, otherwise it is determined in step 3862 whether the shade is still moving and, if it is, the 25% button is monitored in steps 3850 and 3852 as described above. If the shade is not moving, control returns to the MainLoop 430.
Returning to discussion of step 3908, if the shade position is higher than 50%, the shade is moved in the downward direction toward the 50% position in step 3924, and step 3926 monitors whether the 50% button is being pressed. If the 50% button is being pressed and if the shade is still moving, as determined in step 3928, the downward motion of the shade continues; if the shade is determined to not be moving in step 3928, however, control returns to the MainLoop 430. If the 50% button is not being pressed, it is determined in step 3930 if the Up button is pressed and, if it is, shade movement is stopped in step 3932 and control returns to the MainLoop 430. If the Up button is not pressed, it is determined in step 3934 whether the Down, 25%, or 75% button is being pressed and, if yes, control returns to the MainLoop 430; otherwise, step 3936 determines if the shade is still moving. If the shade is still moving, the monitoring of the 50% button being pressed resumes at steps 3924 and 3926, otherwise control returns to the MainLoop 430.
Returning to step 3906, if the Learn50 flag is set, or if the shade is determined in step 3904 to be at the 50% limit, the five second push button timer begins in step 3940, and step 3942 monitors whether the 50% button has been pressed for five seconds or more. If the 50% button has not been pressed for five seconds or more, step 3944 determines whether the 50% button is still being pressed and, if so, step 3942 continues to monitor for whether the 50% button has been pressed for five seconds or more. If the 50% button has been pressed for five seconds or more, it is determined in step 3946 whether the Learn50 flag is set and, if it is set, the current position is set as the 50% position in step 3948, the shade is moved to the up hard stop and the counts are reset in step 3950, the Learn50 flag is reset in step 3952, and control returns to the MainLoop 430. If, however, the Learn50 flag is not set, as determined in step 3946, in step 3954 the shade moves down two inches and returns, and step 3956 monitors until the 50% button is no longer pressed, at which point step 3958 monitors for a shade tug. Step 3960 determines whether a valid transmission is detected and, if so, step 3962 determines if a tug was detected, in which case the Learn50 flag is set, the Learn25, Learn75 and LearnLimit flags are reset in step 3964, and control returns to the MainLoop 430. If a tug was not detected, however, control simply returns to the MainLoop 430 without performing step 3964.
Referring again to step 4008, if the shade position is higher than 75%, the shade is moved in the downward direction toward the 75% position in step 4024, and step 4026 monitors whether the 75% button is being pressed. If the 75% button is being pressed and if the shade is still moving, as determined in step 4028, the downward motion of the shade continues; if the shade is determined to not be moving in step 4028, however, control returns to the MainLoop 430. If the 75% button is not being pressed, it is determined in step 4030 if the Up button is pressed and, if it is, shade movement is stopped in step 4032 and control returns to the MainLoop 430. If the Up button is not pressed, it is determined in step 4034 whether the Down, 25%, or 50% button is being pressed and, if yes, control returns to the MainLoop 430; otherwise, step 4036 determines if the shade is still moving. If the shade is still moving, the monitoring of the 75% button being pressed resumes at steps 4024 and 4026, otherwise control returns to the MainLoop 430.
In step 4006, if the Learn75 flag is set, or if the shade is determined in step 4004 to be at the 75% limit, the five second push button timer begins in step 4040, and step 4042 monitors whether the 75% button has been pressed for five seconds or more. If the 75% button has not been pressed for five seconds or more, step 4044 determines whether the 75% button is still being pressed and, if so, step 4042 continues to monitor for whether the 75% button has been pressed for five seconds or more. If the 75% button has been pressed for five seconds or more, it is determined in step 4046 whether the Learn75 flag is set and, if it is set, the current position is set as the 75% position in step 4048, the shade is moved to the up hard stop and the counts are reset in step 4050, the Learn75 flag is reset in step 4052, and control returns to the MainLoop 430. If, however, the Learn75 flag is not set, as determined in step 4046, in step 4054 the shade moves down two inches and returns, and step 4056 monitors until the 75% button is no longer pressed, at which point step 3958 monitors for a shade tug. Step 4060 determines whether a valid transmission is detected and, if so, step 4062 determines if a tug was detected, in which case the Learn75 flag is set, the Learn25, Learn50 and LearnLimit flags are reset in step 4064, and control returns to the MainLoop 430. If a tug was not detected, however, control simply returns to the MainLoop 430 without performing step 4064.
Referring again to step 4110, after the shade is moved to the Up limit and the NewLearn flag is cleared, it is determined in step 4142 whether the Up button is being pressed; if it is, a determination is made is step 4144 as to whether the shade is moving and, if it is, the shade continues to move to the Up limit and the NewLearn flag is cleared. If the Up button is not being pressed, however, it is determined in step 4146 whether the Down button is pressed and, if it is, shade movement is stopped in step 4148 and control returns to the MainLoop 430. If the Down button is not being pressed, step 4150 determines whether the 25%, 50% or 75% button is being pressed and, if yes, control returns to the MainLoop 430; otherwise, it is determined in step 4152 if the shade is still moving, in which case the monitoring of the Up button being pressed continues in steps 4110 and 4142. If the shade is not still moving, however, control returns to the MainLoop 430.
Referring again to step 4208, in which the shade is moved down, it is determined in step 4236 whether the Down button is being pressed and, if it is, whether the shade is still moving in step 4238. If it is determined in step 4238 that the shade is not moving, control is returned to the MainLoop 430. If it is determined in step 4236 that the Down button is not being pressed, step 4240 determines whether the Up button is being pressed and, if it is, shade movement is stopped in step 4242 and control returns to the MainLoop 430. If the Up button is not being pressed, it is determined in step 4244 whether the 25%, 50% or 75% buttons are being pressed; if this is the case, control returns to the MainLoop 430, otherwise it is determined in step 4246 whether the shade is still moving and, if it is, the monitoring of the Down button continues in steps 4208 and 4236. If the shade is not still moving, control returns to the MainLoop 430.
If it is determined in step 4406 that the LearnLimit flag is set, a new lower limit is stored in step 4425, after which it is determined in step 4430 whether a 25% setpoint has been learned; if not, a new 25% setpoint is calculated in step 4432, and it is thereafter determined, in step 4434, if a 50% setpoint has been learned. If a 50% setpoint has not been learned, a new 50% setpoint is calculated in step 4436, and it is then determined in step 4438 if a 75% setpoint has been learned. If a 75% setpoint has not been learned, a new 75% setpoint is calculated in step 4440, and flow continues to step 4420, where the LearnLimit, Learn25, Learn50, and/or Learn75 flags are cleared, as described above. After the applicable flags are cleared in step 4420, it is determined in step 4450 whether the shade is drifting down due to heavy fabric, for example, in which case the shade is driven to the top in step 4455. In step 4460, it is determined whether the shade has stopped moving for one second, in which control returns to the MainLoop 430; otherwise it is again determined whether the shade is drifting down in step 4450.
In step 4530, it is determined, for Low Voltage Battery Mode, if the shade is at the top, e.g., is at zero (0) percent. If not, the shade is moved to the top in step 4532; otherwise, it is determined in step 4534 whether the 25%, 50%, 75%, or Down button has been pressed, in which case the shade is jogged down one-half (½) rotation in step 4536, and is then moved to the top in step 4532.
Alternatively, a motorized roll shade rotates only the roll shade not the motor and power supply. The rotating parts in such a roll shade may have less rotating mass and require less current to operate compared to one where the motor and power supply are rotated. In addition, such a roll shade may not require a slip ring and/or a commutator ring to transmit power. The absence of a power coupling that includes a commutator ring or a slip ring may reduce manufacturing and operation cost and component failures.
The counterbalance assembly 5006 may include a counterbalancing spring 5061 which may be preloaded to assist in rotating the roll shade tube 5007 and the roll shade system 5001. One end of the counterbalance assembly 5006 may be attached to the roll shade tube 5007 so that the one end of the counterbalance assembly 5006 and the roll shade tube 5007 can rotate in a synchronized manner whereas the other end of the counterbalance assembly 5006 remains stationary.
The drive wheel 5018 may be rotatably connected to one end of the motor assembly 5009 so that the drive wheel 5018 can rotate while the motor assembly 5009 remains stationary. The other end of the motor assembly 5009 may be fixedly attached to the receiving assembly 5010. The motor assembly 5009 may include an internal motor 5091 and optionally a gear motor reducing assembly 5092, which are shown in dashed line in the motor assembly 5009 in
The motor tube 5008 may enclose the motor assembly 5009 and the receiving assembly 5010. The bearing housing 5011 may be placed at an end of the motor tube 5008. The roll shade tube 5007 may enclose the motor tube 5008. In one aspect, the roll shade tube 5007 may enclose the motor tube 5008 and the bearing housing 5011. The bearing housing 5011 may be rotatably connected to the support shaft 5015 so that the bearing housing 5011 can rotate while the support shaft 5015 remains stationary. The mounting bracket 5002 may include a mounting slot 5021. The support shaft 5015 may be fixedly connected to the mounting slot 5021. In one aspect, the mounting slot 5021 may lock the support shaft 5015 to not rotate.
The roll shade system 5001 may include the input wiring system 5014. One end of the input wiring system 5014 may be wired or plugged into the connector 5003 to establish an electrical connection. The other end of the input wiring system 5014 may be wired or plugged into the receiving assembly 5010, or optionally into the motor controller 5110 in the receiving assembly 5010. The connector 5003, the input wiring system 5014, and the receiving assembly 5010 may remain stationary during operation of the internal motor 5091. The support shaft 5015 may be positioned to support the input wiring system 5014 each end of which may be wired and/or plugged into the receiver assembly 5010 and into the connector 5003, respectively, to establish an electrical connection between the connector 5003 and the receiving assembly 5010.
The roll shade system 5001 may include the bearing housing 5011 that may include one or more O-rings 5012 and one or more bearings 5013. In one aspect, the bearing housing 5011 may include two bearings 5013 where each outer race 5013a of the bearings 5013 is attached to the bearing housing 5011 while the inner race 5013b of the bearings 5013 is attached to the support shaft 5015. The O-rings 5012 may be coupled to the bearing housing 5011. One end of the bearing housing 5011 may be mechanically coupled to the roll shade tube 5007. In some aspects, the roll shade tube 5007, the bearing housing 5011 and the outer races 5013a of the bearing 5015, the O-rings 5012 may rotate while the inner race 5013b of the bearings 5013 and the support shaft 5015 remain stationary during operation of the internal motor 5091.
The motor tube 5008 may be mechanically coupled to the receiving assembly 5010 and the motor assembly 5009, using a press fit, an interference fit, a friction fit, a key, adhesive, or the like. The roll shade tube 5007 may enclose the motor tube 5008 and the drive wheel 5018. In one aspect, a part of the roll shade tube 5007 may be mechanically coupled to the drive wheel 5018, using a press fit, an interference fit, a friction fit, a key, adhesive, or the like. Another part of the roll shade tube 5007 may be mechanically coupled to the bearing housing 5011. In various aspects, the internal motor 5091 may be mechanically coupled to a connection shaft 5028. The internal motor 5091 may rotate the connection shaft 5028 and subsequently the drive wheel 5018, the roll shade tube 5007 and the bearing housing 5011.
The roll shade system 5001 may include non-rotating components 5019. The non-rotating components 5019 may include one or more of the connector 5003, the input wiring system 5014, the support shaft 5015, inner races 5013b of at least one of the bearings 5013 (see
The roll shade system 5001 may include rotating components 5020. The rotating components 5020 may include the bearing housing 5011, O-rings 5012 (see
One end of the input wiring system 5014 may be wired or plugged into the connector 5003 and the other end may be wired or plugged into the receiving assembly 5010. The connector 5003 may include electrical terminals (not shown for clarity) to establish an electrical connection between the connector 5003 and the receiving assembly 5010. The roll shade system 5001 may utilize an external power supply to operate the internal motor. The external power entering the connector 5003 may be carried by the input wiring system 5014 to the roll shade system 5001. The power supply wiring via the input wiring system 5014 may be routed through the support shaft 5015. Optionally, the support shaft 5015 may include a hollow mounting shaft. In one aspect, the power supply wiring is routed through the hollow mounting shaft that does not rotate with the roll shade tube 5007. The power wiring through the non-rotating hollow shaft may not abrade or twist the wiring during operation of the internal motor 5091.
A wiring from the antenna system 5016 may be routed in a depression in an outer surface of the support shaft 5015 and below an inner race 5013b of the bearings 5013. Optionally, the roll shade system 5001 may not contain an internal power supply and may require less rotating mass and less current to operate compared to one equipped with an internal power supply. In one aspect, in the roll shade system 5001, the internal motor 5091 in the motor assembly 5009, the motor controller 5110 in the receiving assembly 5010, the RF antenna 5016 and the power supply do not rotate with the roll shade tube 5007. In some aspects, the roll shade system 5001 may not require a slip ring and/or a commutator ring to transmit power. Optionally, the roll shade system 5001 may not contain a slip ring and/or a commutator ring to transmit power.
If a valid transmitter is detected, control proceeds to step 6060 to determine if the button is “Sleep Mode”. If the button is “Sleep Mode”, control proceeds to step 6061 to determine if the shade is at the factory default settings. If the shade is at the factory default settings, control proceeds to step 6062 to turn off the RF receiver and further to step 6063 to zero out the learn timer. And control proceeds to step 6064 to move up the shade and further to step 6065 to determine if the shade has found a hardstop. If the shade has not found a hardstop, control returns to step 6064. If the shade has found a hardstop, control proceeds to step 6066 to set the shipping mode flag to “True” and further to step 6067 to enter the Sleep( ) command. And control proceeds to the SHIPPING MODE 6100.
If it is determined in step 6060 that the button is not “Sleep Mode” or it is determined in step 6061 that the shade is not at the factory default settings, control proceeds to step 6031 to determine if the transmitter is in permanent memory.
If the transmitter is not in permanent memory, control proceeds to step 6070 to monitor a signal for five seconds and further to step 6071 to determine if the user has pressed a new transmitter for more than five seconds. If the user has not pressed a new transmitter for more than five seconds, control returns to step 6030 and further proceeds as described herein. If the user has pressed a new transmitter for more than five seconds, control proceeds to step 6073 to place the transmitter in permanent memory and further to step 6032 to move up the shade and find a hardstop. And control proceeds to step 6033 to determine if the shade has traveled less than six inches. If the transmitter is in permanent memory in step 6031, control proceeds to step 6032 to move up the shade and to find a hardstop. And control proceeds to step 6033 to determine if the shade has traveled less than six inches.
If the shade has traveled less than six inches, control proceeds to step 6043 to move down the shade two inches and to return for a user feedback. Control further proceeds to step 6042 to apply a dynamic break and then returns to the Main Loop 6200. If the shade has not traveled less than six inches, control proceeds to step 6042 to apply the dynamic break and then proceeds to the Main Loop 6200.
If it is determined in step 6030 that a valid transmitter is not detected, control proceeds to step 6040 to determine if the transmitter program mode timer has expired. If the transmitter program mode time has not expired, control proceeds to step 6050 to activate the incremental learn mode timer and returns to step 6030. If the transmitter program mode time has expired, control proceeds to step 6041 and assumes that the shade is at the 50% position. And control proceeds to step 6042 to apply the dynamic break and returns to the Main Loop 6200.
If it is determined in step 6210 that a message is detected, control proceeds to step 6211 to determine if the button is the “2-Button Press”. If the button is not “2-Button Press”, control proceeds to step 6230 to determine if the button is a learned remote. If the button is not a learned remote, control returns to step 6210. If the button is a learned remote button, control proceeds to the DecodeButtons 7000.
If it is determined in step 6211 that the button is the “2-Button Press”, control proceeds to step 6212 to move the shade to position X=75%, further to step 6213 to start the learn timer for 30 seconds, and then to step 6214 to set “What_to learn” to “Add_Delete_Remote”. And control proceeds to the MOVE TO POSITION X 6500.
If the shade displacement is not two inches or more, control proceeds to the Main Loop 6200. If the shade displacement is two inches or more, control proceeds to step 6321 to determine if “What_to_Learn” has been set to “Factory_Reset”.
If “What_to_Learn” has been set to “Factory_Reset”, control proceeds to step 6322 to reset all shade positions to default values, delete all remotes, set “Learn Mode Flag” to “Entered” and set “What_to_Learn” to “Add_Delete_Remote.” And control proceeds to the Main Loop 6200. If “What_to_Learn” has not been set to “Factory_Reset” in step 6321, control proceeds to step 6323 to set “Learn Mode Flag” to “Entered” and returns to the Main Loop 6200.
If it is determined in step 6310 that “Learn Mode Flag” has not been set to “Active”, control proceeds to step 6311 to change the track position and further proceeds to step 6312 to determine if the motion has stopped. If the motion has not stopped, control returns to step 6311. If the motion has stopped, control proceeds to step 6313 to determine if the shade displacement is one inch or more.
If the shade displacement is not one inch or more, control proceeds to step 6330 to determine if the shade is below a position of “UP”, “25%”, “50%”, or “75%”.
If the shade is not below any of “UP”, “25%”, “50%”, or “75%”, control returns to the Main Loop 6200. If the shade is below any of “UP”, “25%”, “50%”, or “75%”, control proceeds to step 6331 to determine if the shade is placed at the lowest preset.
If the shade is placed at the lowest preset, control proceeds to step 6332 to set “X” to “Lowest Preset” and further proceeds to the MOVE TO POSITION X 6500. If the shade is not placed at the lowest preset, control proceeds to step 6340 to determine if the shade is placed below the next lowest preset.
If the shade is placed below the next lowest preset, control proceeds to step 6341 to set “X” to “Next Lowest Preset” and further proceeds to the MOVE TO POSITION X 6500. If the shade is not placed below the next lowest preset, control proceeds to step 6350 to determine if the shade is placed below the highest preset.
If the shade is place is placed below the highest present, control proceeds to step 6351 to set “X” to “Highest Preset” and further proceeds to the MOVE TO POSITION X 6500. If the shade is not placed below the highest preset, control proceeds to step 6360 to set “X” to “TOP” and to set “Hardstop Flag” on and further proceeds to the MOVE TO POSITION X 6500.
If it is determined in step 6313 that the shade displacement is one inch or more, control proceeds to step 6314 to determine if the shade displacement is two inches or more.
If the shade displacement is not two inches or more, control proceeds to step 6360 to set “X” to “TOP” and to set “Hardstop Flag” on and further proceeds to the MOVE TO POSITION X 6500. If that the shade displacement is two inches or more, control proceeds to step 6315 to determine if the tug timer has expired.
If the tug timer has not expired, control proceeds to step 6370 to zero out the tug timer and further proceeds to step 6360 to set “X” to “TOP” and to set “Hardstop Flag” on. And control proceeds to the MOVE TO POSITION X 6500. If the tug timer has expired, control proceeds to step 6316 to begin the tug timer in 10 seconds and returns to the Main Loop 6200.
If the position X is above the current position, control proceeds to step 6520 to start moving up the shade and proceeds to step 6550 to determine if the shade is at the position X.
If the shade is at the position X, control proceeds to step 6551 to stop the shade and returns to the Main Loop 6200. If the shade is not at the position X, control proceeds to step 6560 to determine if the learned remote button has been detected.
If the learned remote button has been detected, control proceeds to the DecodeButtons 7000. If the learned remote button has not been detected in step 6560, control proceeds to step 6570 to determine if the shade has seen a hardstop. If the shade has not seen a hardstop, control returns to step 6550. If the shade has seen a hardstop, control proceeds to step 6571 to determine if the shade is moving up.
If the shade is not moving up, control proceeds to step 6581 to stop the shade, exit all learn modes, and zero out all learn timers and returns to the Main Loop 6200. If the shade is moving up, control proceeds to step 6572 to determine if the shade has stopped for a low hardship at this position before.
If the shade has stopped for a low hardship at this position before, control proceeds to step 6582 to stop the shade and to set the current position as “TOP” and returns to the Main Loop 6200. If the shade has not stopped for a low hardship at this position before, control proceeds to step 6573 to determine if the shade is learning a position and seeking a hardstop.
If the shade is learning a position and/or seeking a hardstop, control proceeds to step 6590 to set “Top Found” on and to record the distance traveled as new “What_to_Learn Position” and further proceeds to the Main Loop 6200. If the shade is neither learning a position nor seeking a hardstop, control proceeds to step 6583 to record a low hardstop at this position and returns to the Main Loop 6200.
If it is determined in step 6510 that the position X is not above the current position, control proceeds to step 6530 to determine if the position X is below the current position. If the position X is not below the current position, control proceeds to step 6531 to stop the shade and returns to the Main Loop 6200. If the position X is below the current position, control proceeds to step 6540 to start moving up the shade. And control proceeds to step 6550 and further proceeds as described herein.
As shown in
If the “Learn Mode Flag” has not been set to “Entered”, as shown in
If the button has been held for five seconds, control proceeds to step 7220 to determine if the shade is at “TOP”. If the shade is at “TOP”, control proceeds to step 7221 to set “What_to_Learn” to “UP” and further proceeds to step 7222 to jog the shade and set “Learn Position Timer” to “30 Seconds” and “Learn Mode Flag” to “Active”. And control returns to the Main Loop 6200. If the shade is not at “TOP”, control proceeds to the MOVE TO POSITION X 6500. If the button has not been held for five seconds in step 7205, control proceeds to step 7210 to determine if the button has been held for ten seconds.
If the button has been held for ten seconds, control proceeds to step 7211 to set position X to 75% and further proceeds to step 7212 to set “What_to_Learn” to “Add_Delete_Remote”, “Learn Position Timer” to “30 Seconds” and “Learn Mode Flag” to “Active.” And control proceeds to the MOVE TO POSITION X 6500. If the button has not been held for ten seconds in step 7210, control proceeds to step 7213 to determine if the button has been held for fifteen seconds.
If the button has been held for fifteen seconds, control proceeds to step 7214 to set the position X to “2 TUBE REVOLUTIONS” and “What_to_Learn” to “Factory_Reset” and further proceeds to the MOVE TO POSITION X 6500. If not, control returns to the Main Loop 6200.
As shown in
If “What_To_Learn” has not been set to “UP”, as shown in
If the button is an unlearned remote, control proceeds to step 7311 to determine if the button has been held for five seconds. If the button has been held for five seconds, control proceeds to step 7312 to set “Learn Remote” to “Memory” and further proceeds to the MOVE TO POSITION X 6500. If the button has not been held for five seconds in step 7311, control returns to the Main Loop 6200. If the setting is not an unlearned mode in step 7310, control proceeds to the MOVE TO POSITION X 6500.
As shown in
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As shown in
If the “DOWN” button is detected, control proceeds to step 7401 to set the position X to “DOWN” and further proceeds to step 7410 to determine if the shade is moving up. If the shade is moving up, control proceeds to step 7201 to stop the shade and returns to the Main Loop 6200. If the shade is not moving up in step 7410, control proceeds to step 7411 to determine if “Learn Mode Flag” has been set to “Entered”.
If “Learn Mode Flag” has been set to “Entered”, control proceeds to step 7420 to determine if “What_to_Learn” has been set to “DOWN”. If “What_to_Learn” has been set to “DOWN”, control proceeds to step 7340 (
As shown in
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If “Learn Mode Flag” has been set to “Entered”, control proceeds to step 7520 (
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If “Learn Mode Flag” has been set to “Entered”, control proceeds to step 7620 to determine if What_to_Learn” has been set to “50%”. If What_to_Learn” has not been set to “50%”, control proceeds to the MOVE TO POSITION X 6500 (
If it is determined in step 7611 that “Learn Mode Flag” has not been set to “Entered”, control proceeds to step 7612 to set “What_to_Learn” to “50%” and further proceeds to step 7613 to determine if the shade is at 50%. If the shade is at 50%, control proceeds to step 7430 (
As shown in
If “Learn Mode Flag” has been set to “Entered”, control proceeds to step 7720 to determine if “What_to_Learn” has been set to “25%”. If “What_to_Learn” has been set to “25%”, control proceeds to step 7340 and further proceeds as described herein. If not, control proceeds to the MOVE TO POSITION X 6500 (
If it is determined in step 7711 that “Learn Mode Flag” has not been set to “Entered”, control proceeds to step 7712 to set “What_to_Learn” to “25%” and further proceeds to step 7713 to determine if the shade is at 25%. If the shade is at 25%, control proceeds to step 7430 (
As shown in
If the shade is at the factory default settings, control proceeds to step 7804 to set “SHIPPING MODE FLAG” to “TRUE” and further proceeds to step 7805 to move up the shade to the hardstop. And control proceeds to the SHIPPING MODE 6100. If the shade is not at the factory default settings in step 7803, control returns to the Main Loop 6200.
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If the button is “Preset 2”, control proceeds to step 7821 to set the position X to “25%” and further proceeds to the MOVE TO POSITION X 6500. If not, control proceeds to step 7830 (58-4) to determine if the button is “Preset 3”.
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If the button is “Preset 4”, control proceeds to step 7841 to set the position X to “50%” and further proceeds to the MOVE TO POSITION X 6500 (
If the button is “Preset 5”, control proceeds to step 7851 to set the position X to “62.5%” and further proceeds to the MOVE TO POSITION X 6500 (
If the button is “Preset 6”, control proceeds to step 7861 to set the position X to “75%” and further proceeds to the MOVE TO POSITION X 6500 (
If the button is “Preset 7”, control proceeds to step 7871 to set position X to “87.5%” and further proceeds to the MOVE TO POSITION X 6500 (
If the button is “Learn Mode”, control proceeds to step 7881 to determine if the current position is learnable. If the current position is learnable, control proceeds to step 7882 to set “What_to_Learn” to the current position, jog the shade and set “Learn Position Timer” to thirty seconds. And control returns to the Main Loop 6200. If the current position is not learnable, control proceeds to step 7883 to determine if “What_to_Learn” has been set to “Add_Delete_Remote”. If “What_to_Learn” has been set to “Add_Delete_Remote”, control proceeds to step 7884 to add the current remote to memory and move up the shade to the hardstop and returns to the Main Loop 6200. If not, control returns to the Main Loop 6200.
If it is determined in step 7880 that the button is not “Learn Mode”, control proceeds to step 7890 to determine if the button is “Exit Learn Mode”. If the button is not “Exit Learn Mode”, control returns to the Main Loop 6200. If the button is “Exit Learn Mode”, control proceeds to step 7891 to determine if “Learn Mode Flag” has been set to “Entered”. If “Learn Mode Flag” has not been set to “Entered”, control returns to the Main Loop 6200. If “Learn Mode Flag” has been set to “Entered” in step 7891, control proceeds to step 7892 to determine if the shade is in “Learn Mode” for a position.
If the shade is in “Learn Mode” for a position, control proceeds to step 7893 to set “Learn Current Position” as new “What_to_Learn” position and to move up the shade to the hardstop. And control returns to the Main Loop 6200. If the shade is not in “Learn Mode” for a position in step 7892, control proceeds to 7894 to determine if “What_to_Learn” has been set to “Add_Delete_Remote”.
If What_to_Learn” has been set to “Add_Delete_Remote”, control proceeds to step 7895 to delete the current remote from memory and move up the shade to the hardstop and returns to the Main Loop 6200. If What_to_Learn” has not been set to “Add_Delete_Remote” in step 7894, control returns to the Main Loop 6200.
If the shade has not been tugged two inches or more, control proceeds to step 6120 to enter the Sleep( ) command and returns to the SHIPPING MODE 6100. If the shade has been tugged two inches or more, control proceeds to step 6130 to turn on the RF receiver and further proceeds to step 6140 to start the learn timer for 60 seconds. And control proceeds to step 6141 to determine if there is a learned remote firing.
If there is a learned remote firing, control proceeds to step 6142 to set “Shipping Sleep Flag” to “False” and further proceeds to step 6143 to move up the shade to the hardstop and to zero out the counter. And control returns to the Main Loop 6200. If there is no learned remote firing in step 6141, control proceeds to step 6150 to determine if an unlearned remote firing has been on for five seconds or more.
If an unlearned remote firing has been on for five seconds or more, control proceeds to step 6151 to save the remote. And control proceeds to step 6142 to set “Shipping Sleep Flag” to “False” and then to step 6143 to move up the shade to the hardstop and to zero out the counter. And control returns to the Main Loop 6200.
If it is determined in step 6150 that an unlearned remote firing has not been on for five seconds or more, control proceeds to step 6160 to determine if the learn timer has expired. If the learn timer has not been expired, control returns to step 6141. If the learn timer has expired, control proceeds to step 6161 to turn off the RE receive and proceeds to step 6162 to zero out the learn timer. And control proceeds to step 6120 to enter the “Sleep” command and returns to the SHIPPING MODE 6100.
The many features and advantages of the invention are apparent from the detailed specification, and, thus, it is intended by the appended claims to cover all such features and advantages of the invention which fall within the true spirit and scope of the invention. Further, since numerous modifications and variations will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction and operation illustrated and described, and, accordingly, all suitable modifications and equivalents may be resorted to that fall within the scope of the invention.
This application is a Continuation-in-Part of U.S. patent application Serial No. 13/847,607 filed Mar. 20, 2013, which is a Continuation of U.S. patent application Ser. No. 13/276,963 filed Oct. 19, 2011, which is a Continuation-in-Part of U.S. patent application Ser. No. 12/711,192, filed on Feb. 23, 2010 (now U.S. Pat. No. 8,299,734, issued on Oct. 30, 2012), the disclosures of which are incorporated herein by reference in their entireties.
| Number | Date | Country | |
|---|---|---|---|
| Parent | 13276963 | Oct 2011 | US |
| Child | 13847607 | US |
| Number | Date | Country | |
|---|---|---|---|
| Parent | 13847607 | Mar 2013 | US |
| Child | 13921950 | US | |
| Parent | 12711192 | Feb 2010 | US |
| Child | 13276963 | US |
