CN117545908A

CN117545908A - Antenna for electric curtain

Info

Publication number: CN117545908A
Application number: CN202280044559.7A
Authority: CN
Inventors: M·迪埃尔; D·A·柯比; 曲圣; J·M·斯坦梅茨
Original assignee: Lutron Electronics Co Inc
Current assignee: Lutron Electronics Co Inc
Priority date: 2021-05-26
Filing date: 2022-05-26
Publication date: 2024-02-09

Abstract

The motorized window treatment may include an antenna that allows wireless communication. The motorized window treatment may include a roller tube, a motor drive unit, and at least one mounting bracket. The coil may be configured to windingly receive a flexible material and rotate to raise and lower the flexible material. The mounting bracket may be configured to support a bearing assembly of the motor drive unit to allow rotation of the coil relative to the mounting bracket. The bearing assembly may be located between the coil and the mounting bracket such that a gap is formed between the coil and the mounting bracket. The antenna may include an electrical conductor wound on the motor drive unit adjacent the gap between the coil and the mounting bracket.

Description

Antenna for electric curtain

Cross Reference to Related Applications

The present application claims priority from U.S. provisional patent application No.63/193,433, filed on 26, 5, 2021, and U.S. provisional patent application No.63/227,252, filed on 29, 7, 2021, which are incorporated herein by reference in their entirety.

Background

The window covering may be mounted in front of one or more windows, for example, to block sunlight from entering the space and/or to provide privacy. The window covering may include, for example, a roller blind, roman shade, blind, or valance. Roller shades typically include a flexible shade fabric wrapped around an elongated roller tube. Such roller shades may include a weighted lower rocker arm at the lower end of the shade fabric. The lower rocker can suspend the shade fabric in front of the window or windows on which the roller blind is mounted.

A typical window covering may be mounted to a structure surrounding the window, such as a window frame. Such curtains may include brackets at opposite ends thereof. The support may be configured to operably support the coiled tubing such that the flexible material may be raised and lowered. For example, the brackets may be configured to support respective ends of the coil. The bracket may be attached to a structure such as a wall, ceiling, window frame or other structure.

Such curtains may be motorized. The motorized window treatment may include a roller tube, a motor, a bracket, and an electrical cord. Components of the motorized window treatment (such as brackets, roller tubes, wires, etc.) may be obscured by the fascia or mounted in the pocket from view.

Disclosure of Invention

As described herein, the motorized window treatment may include an antenna that allows wireless communication. The motorized window treatment may include a roller tube, a motor drive unit, and at least one mounting bracket. The coil may be configured to windingly receive the flexible material and rotate to raise and lower the flexible material. The motor drive unit may be received within the cavity of the coil. The motor drive unit may include a motor configured to rotate the coil and a bearing assembly coupled to the coil such that the coil is configured to rotate about the motor drive unit. The mounting bracket may be configured to support a bearing assembly of the motor drive unit to allow rotation of the coil relative to the mounting bracket. The bearing assembly may be located between the coil and the mounting bracket such that a gap is formed between the coil and the mounting bracket. The antenna may comprise an electrical conductor wound around the motor drive unit adjacent the gap between the coil and the mounting bracket. For example, the antenna may be configured to be helically wound around the motor drive unit near the gap between the coil and the mounting bracket.

The motorized window treatment may include a roller tube, a motor drive unit, and at least one mounting bracket. The coil may be configured to windingly receive the flexible material. The coil may be configured to rotate to raise and lower the flexible material. The motor drive unit may be received within the cavity of the coil. The motor driving unit may include a motor, a housing, and an antenna. The motor may be configured to rotate the coil. The housing may be configured to house a motor. The housing may include at least one channel formed in a surface of the housing. The antenna may comprise an electrical conductor. The at least one mounting bracket may be configured to support the coil such that the coil is rotatable relative to the at least one mounting bracket. The motorized window treatment may define a gap between the roller tube and the mounting bracket. The electrical conductor of the antenna may be wound on the housing of the motor drive unit adjacent the gap between the coil and the mounting bracket. The electrical conductor of the antenna may be configured to be received within the at least one channel when wound on the housing.

The motor drive unit may include a wireless communication circuit electrically coupled to the antenna for transmitting and receiving wireless signals. The at least one channel may comprise at least two peripheral channels extending parallel to each other around the perimeter of the housing in the outer surface of the housing. The at least two peripheral channels may be joined together at a recess, and the electrical conductor of the antenna may be configured to pass from one peripheral channel to the other peripheral channel via the recess. Alternatively, the at least one channel may comprise a single spiral channel. The helical channel may be configured such that when the antenna is wound on the housing, the antenna is moved away from the coil in a longitudinal direction.

The motor driving unit may include a motor driving printed circuit board on which a driving circuit for controlling the motor is mounted. The motor drive unit may include a battery compartment for receiving one or more batteries for powering the drive circuitry and wireless communication circuitry on the motor drive printed circuit board. The housing may include a cover for covering an end of the battery compartment. The battery compartment may be located between the cover and the motor drive printed circuit board. The electrical conductor of the antenna may be wound around the cover. The electrical conductor of the antenna may be located within at least one channel extending around the cover. The wireless communication circuit may be located inside the cover.

The motorized window treatment may include a matching network circuit coupled to the motor drive printed circuit board. The matching network circuit may be located inside the cover. The wireless communication circuit may be coupled to the motor drive printed circuit board via a ribbon cable. The motor drive unit may include a coupled printed circuit board located near the gap between the coil and the mounting bracket. The coupled printed circuit board may include a matching network circuit mounted thereto. The antenna may be electrically coupled to a mounting network circuit on the coupling printed circuit board. The wireless communication circuit may be mounted to the motor drive printed circuit board and electrically connected to the matching network circuit on the coupling printed circuit board by a coaxial cable.

The motorized window treatment may include a flexible printed circuit board. The antenna may be formed on a flexible printed circuit board. The motorized window treatment may include a bearing assembly coupled to the roller tube such that the roller tube is configured to rotate about the motor drive unit. The bearing assembly may be located between the coil and the mounting bracket. The bearing assembly may be made of a non-conductive material. The antenna may be wound on the housing in an area surrounding the outer edge of the motor drive unit and fall within an area defined by the bearing assembly. At least a portion of the antenna may be aligned with a gap between the coil and the at least one mounting bracket. The gap between the coil and the at least one mounting bracket may define an area including the non-conductive component. The coil may be made of an electrically conductive material. The antenna may be configured to electromagnetically couple to the coil. Both the coil and the mounting bracket may be made of an electrically conductive material. The housing may include a body and a cover configured to be attached to the body. At least one channel may be defined in the body such that the antenna is wound around the body.

Drawings

Fig. 1 is an exemplary motorized window treatment.

Fig. 2 is a perspective view of an exemplary battery-powered motorized window treatment with one end of the roller tube in a pivoted position.

Fig. 3 is a perspective view of another example battery-powered motorized window treatment, with the battery shown removed.

Fig. 4 is a front cross-sectional view of an exemplary motorized window treatment.

Fig. 5 is an enlarged front cross-sectional view of the motorized window treatment of fig. 4.

Fig. 6 is a perspective view of an exemplary motor drive unit of a motorized window treatment, such as the exemplary motorized window treatment of fig. 4.

Fig. 7 is an enlarged perspective view of an end of the exemplary motor drive unit of fig. 6.

Fig. 8 is an enlarged perspective view of an end of the exemplary motor drive unit of fig. 6 with the bearing assembly removed.

Fig. 9 is a partially exploded view of the motor drive unit of fig. 6 looking up into the interior of the upper portion of the housing of the motor drive unit.

Fig. 10 is an enlarged front cross-sectional view of another example motorized window treatment.

Fig. 11 is a top view of an exemplary flexible printed circuit board with an exemplary antenna.

Fig. 12 is an enlarged front cross-sectional view of another example motorized window treatment.

Fig. 13 is an enlarged perspective view of an end of a motor drive unit of the example motorized window treatment of fig. 12 with the bearing assembly removed.

Fig. 14 is a partially exploded view of the motor drive unit of fig. 13 looking up into the interior of the upper portion of the housing of the motor drive unit.

Fig. 15 is an enlarged front cross-sectional view of another example motorized window treatment.

Fig. 16 is a block diagram of an exemplary motor drive unit of the motorized window treatment.

Detailed Description

Fig. 1 and 2 depict an exemplary motorized window treatment 100 (e.g., a battery-powered motorized window treatment system) that includes a window treatment assembly 110 and one or more mounting brackets 130A, 130B. The window covering assembly 110 may include a roller tube 111, a flexible material 120 (e.g., a cover material) windingly attached to the roller tube 111, a motor drive unit 190 mounted inside a first end 112 of the roller tube 111, and an idler wheel (not shown) mounted inside a second end 114 of the roller tube 111. The mounting brackets 130A, 130B may be configured to be coupled to or otherwise mounted to a structure. For example, each of the mounting brackets 130A, 130B may be configured to be mounted to (e.g., attached to) a window frame (e.g., to a top or side frame of the window frame), a wall, a ceiling, or other structure such that the motorized window treatment 100 is mounted proximate to (e.g., over or in) an opening such as a window. The mounting brackets 130A, 130B may be configured to mount to a vertical structure (e.g., wall mounted to a wall as shown in fig. 1) and/or to mount to a horizontal structure (e.g., overhead mounted to a ceiling). For example, the mounting brackets 130A, 130B may be rotated 90 degrees from that shown in FIG. 1.

The roller tube 111 may operate as a rotating element of the motorized window treatment 100. The coil 111 may be elongated in the longitudinal direction L and rotatably mounted (e.g., rotatably supported) by the mounting bracket 130. The roller tube 111 may define a longitudinal axis 116. The longitudinal axis 116 may extend in a longitudinal direction L. As shown in fig. 1, the mounting bracket 130A may extend from the structure in a radial direction R. It should be appreciated that when the mounting brackets 130A, 130B are overhead, the mounting bracket 130A may extend from the structure in the lateral direction T. The radial direction R may be defined as a direction perpendicular to the structure and longitudinal axis 116. The flexible material 120 may be windingly attached to the roller tube 111 such that rotation of the roller tube 111 causes the flexible material 120 to be wound on or unwound from the roller tube 111 along a transverse direction T extending perpendicular to the longitudinal direction L. For example, rotation of the roller tube 111 may cause the flexible material 120 to move in the transverse direction T between a fully raised position (e.g., an open position or a fully open position, as shown in fig. 1) and a fully lowered position (e.g., a closed position or a fully closed position).

The coil 111 may be made of aluminum. The coil 111 may be a low deflection coil and may be made of a material having high strength and low density, such as carbon fiber. The coil 111 may have a diameter of, for example, about two inches. For example, when the flexible material 120 has a length of 12 feet and a width of 12 feet (e.g., and the coil 111 has a corresponding width of 12 feet and a diameter of two inches), the coil 111 may exhibit a deflection of less than 1/4 inch. An example of a LOW deflection coil is described in U.S. patent application publication No.2016/0326801 entitled "Low-DEFLECTION ROLLER SHADE TUBE FOR LARGE OPENINGS," published at 11/10 of 2016, the entire disclosure of which is incorporated herein by reference.

The flexible material 120 may include a first end (e.g., a top end or an upper end) coupled to the coil 111 and a second end (e.g., a bottom end or a lower end) coupled to the lower swing link 140. The lower swing link 140 may be configured (e.g., weighted) to suspend the flexible material 120 vertically. Rotation of the roller tube 111 may move the lower swing link 140 toward or away from the roller tube 111 between the raised and lowered positions.

The flexible material 120 may be any suitable material, or any combination of materials. For example, the flexible material 120 may be a "scrim", woven, nonwoven, light control film, yarn, and/or mesh. Motorized window treatment 100 may be any type of window treatment. For example, motorized window treatment 100 may be a roller shade, soft transparent shade, valance, cellular shade, roman shade, or Venetian blind as depicted. As shown, the flexible material 120 may be a material suitable for use as a shade fabric, and may alternatively be referred to as a flexible material. The flexible material 120 is not limited to a shade fabric. For example, according to alternative implementations of motorized window treatment 100 as a retractable projection screen, flexible material 120 may be a material suitable for displaying images projected onto flexible material 120.

The motorized window treatment 100 may include a motor drive unit (e.g., drive assembly) that may be at least partially disposed within the roller tube 111. For example, the motor drive unit may include a housing received within the coil 111. The motor driving unit may include a motor for rotating the winding tube 111 and a control circuit (which may include a microprocessor, for example) for controlling the motor. The motor drive unit may be powered by a power source (e.g., an ac power source or a dc power source) provided by an electrical cord and/or a battery. The motor drive unit may be operably coupled to the roller tube 111 such that when the motor is controlled, the roller tube 111 rotates. The motor drive unit may be configured to rotate the roller tube 111 of the example motorized window treatment 100 such that the flexible material 120 is operable between a fully raised position and a fully lowered position. The motor drive unit may be configured to rotate the roller tube 111 while reducing noise generated by the motor drive unit (e.g., noise generated by one or more gear stages of the drive assembly). Examples of MOTOR drive units for MOTORIZED WINDOW treatments are described in more detail in commonly assigned U.S. patent No.6,497,267, entitled "MOTORIZED WINDOW SHADE WITH, ultra MOTOR DRIVE AND ESD protein," published 24, 2002, and U.S. patent No.9,598,901, entitled "QUIET MOTORIZED WINDOW TREATMENT SYSTEM," published 21, 2017, the entire disclosures of which are incorporated herein by reference.

The motorized window treatment 100 may be configured to make one or more ends of the window treatment assembly 110 accessible while remaining secured to the mounting brackets 130A, 130B. For example, motorized window treatment 100 may be adjusted (e.g., pivoted or slid) between an operating position (e.g., as shown in fig. 1) and an extended position (e.g., as shown in fig. 2) while secured to mounting brackets 130A, 130B. The operating position may be defined as a position in which the window covering assembly 110 is supported by and aligned with both of the mounting brackets 130A, 130B. An extended position may be defined as a position in which one or more ends of the window covering assembly 110 are accessible while still attached to the brackets 130A, 130B.

When in the extended position, one or more ends of the window covering assembly 110 may be accessed, for example, to replace a battery, adjust one or more settings, make electrical connections, repair one or more components, and so forth. One or more of the mounting brackets 130A, 130B may enable an end of the window covering assembly 110 to be accessed when the motorized window covering is in the extended position. For example, the first mounting bracket 130A may define a base 132 and an arm 134. The base 132 and the arms 134 may define a fixed portion of the mounting bracket 130. The mounting brackets 130A, 130B may define a translating portion 136. The translating portion 136 may include an attachment member 138 configured to receive the first end 112 of the window covering assembly 110. The attachment member 138 may define an aperture. The mount 132 may be configured to attach the mounting bracket 130A to a structure. When the mounting bracket 130A is attached to a vertical structure, such as a wall, the arms 134 of the mounting bracket 130A may extend horizontally (e.g., in the radial direction R) from the base 132.

When the motorized window treatment 100 is in the extended position, one end of the window treatment assembly 110 may slide out. For example, when motorized window treatment 100 (e.g., window treatment assembly 110) is in an extended position, for example, as shown in fig. 2, one of the mounting brackets (e.g., mounting bracket 130A) may be configured to slide out while the other of the mounting brackets (e.g., mounting bracket 130B) may remain stationary. The extended position of the motorized window treatment 100 may include a first end 112 of the window treatment assembly 110 proximate to a first mounting bracket (e.g., mounting bracket 130A) being farther from the window and/or structure to which the first mounting bracket is anchored than when the motorized window treatment 100 is in the operating position. When the motorized window treatment 100 is in the extended position, for example, as shown in fig. 2, a second end 114 (e.g., opposite the first end 112) of the window treatment assembly 110 proximate to a second mounting bracket (e.g., mounting bracket 130B) may remain substantially stationary. In other words, the window covering assembly 110 is pivotable between an operative position and an extended position. The second end 114 of the window covering assembly 110 and the mounting bracket 130B may define a fulcrum (e.g., the roller tube 111) about which the motorized window treatment 100 pivots.

When the motorized window treatment 100 is in the extended position, the motor drive unit housing end 150 may be exposed (e.g., accessible). The motor drive unit housing end 150 may be positioned proximate the first end 112 of the window covering assembly 110. The motor drive unit housing end 150 may cover the cavity of the roller tube 111. The motor drive unit housing end 150 may be configured to be removably secured to the roller tube 111 (e.g., at the first end 112 of the window covering assembly 110). For example, the motor drive unit housing end 150 may be configured to be secured within the cavity. The motor drive unit housing end 150 may be configured to hold one or more components (e.g., such as the battery 260 shown in fig. 3).

The motor drive unit housing end 150 may include a control button 152. The control buttons 152 may be backlit. For example, the control buttons 152 may include light pipes (e.g., may be translucent or transparent) that are illuminated by Light Emitting Diodes (LEDs) within the motor drive unit housing. The control buttons 152 may be configured to enable a user to alter one or more settings of the motorized window treatment 100. For example, the control buttons 152 may be configured to change one or more wireless communication settings and/or one or more drive settings. The control buttons 152 may be configured to enable a user to pair the motorized window treatment 100 with a remote control device to allow wireless communication between the remote control device and wireless communication circuitry (e.g., an RF transceiver) in the motor drive unit 190. The control buttons 152 may be configured to provide status indications to the user. For example, the control buttons 152 may be configured to flash and/or change color to provide status indications to the user. The status indication may indicate when the motorized window treatment 100 is in a programming mode.

The motor drive unit housing end 150 may include a disable actuator 154 for detecting when the roller tube 111 is not in the operational position. When the spool 111 is not in the operational position, the motor drive unit (e.g., drive assembly) may be deactivated (e.g., automatically deactivated). For example, the disabling actuator 154 may be configured to disable the motor drive unit such that the covering material cannot be raised or lowered when the roller tube 111 is not in the operational position. For example, disabling actuator 154 may disable the motor of the motor drive unit when roller tube 111 is pivoted (e.g., or slid) from the operational position to the extended position. When the spool 111 reaches the operational position, the disable actuator 154 may enable the motor. For example, disabling actuator 154 may be a button, switch, or the like.

In addition, the motor drive unit housing end 150 may also include a position detection circuit (not shown) for detecting when the spool 111 is not in the operational position and disabling (e.g., automatically disabling) the drive assembly (e.g., rather than including disabling the actuator 154). For example, the position detection circuit may include a magnetic sensing circuit (e.g., a hall effect sensor circuit) configured to detect when the motor drive unit housing end 150 is in an extended position and not in close proximity to a magnet located inside the mounting bracket 130A. The position detection circuit may be configured to disable the drive assembly such that the cover material cannot be raised or lowered when the roller tube 111 is not in the operational position. For example, the position detection circuit may disable the motor of the drive assembly when the roller tube 111 is pivoted (e.g., or slid) from the operating position to the extended position. When the spool 111 reaches the operating position, the position detection circuit may activate the motor. For example, the position detection circuit may also include an IR sensor, a switch, and the like.

Fig. 3 depicts an exemplary battery-powered motorized window treatment 200 (e.g., such as the motorized window treatment 100 shown in fig. 1 and 2). The battery-powered motorized window treatment 200 may include a roller tube 210 (e.g., such as roller tube 111 shown in fig. 1), a flexible material 220 (e.g., a cover material) windingly attached to the roller tube 210, a motor drive unit 290 (e.g., a drive assembly), and a plurality of batteries 260. The battery-powered motorized window treatment 200 may also include a lower swing link 240 (e.g., such as the lower swing link 140 shown in fig. 1 and 2) and one or more mounting brackets 230A, 230B (e.g., such as the mounting brackets 130A, 130B shown in fig. 1 and 2). The motor drive unit 290 of the battery-powered motorized window treatment 200 may be powered by the battery 260. Although the battery-powered motorized window treatment 200 is shown with four batteries 260, it should be appreciated that the battery-powered motorized window treatment 200 may include a greater or lesser number of batteries. The coil 210 may define a longitudinal axis 216. The longitudinal axis 216 may extend in the longitudinal direction L.

The motor drive unit may include a housing 292 in which the battery 260 may be housed. The housing 292 of the motor drive unit 290 may include a cover 250 configured to retain the battery 260 within the housing 292 of the motor drive unit 290 (e.g., within the coil 210). The cover 250 may define an outer surface 252 having a button 254 (e.g., such as the button 152. The button 254 may be backlit. For example, the button 254 may include a light pipe illuminated by an LED within the cover 250. The button 254 may be configured to enable a user to change one or more settings of the battery-powered motorized window treatment 200, as similarly described with respect to the button 152. The button 254 may be configured to enable a user to pair the battery-powered motorized window treatment 200 with a remote control device to allow wireless communication between the remote control device and the wireless communication circuitry of the motor drive unit 290. The button 254 may be configured to provide a status indication to the user. For example, the button 254 may be configured to flash and/or change color to provide a status indication to the user. The button 254 may indicate when the battery-powered motorized window treatment 200 is in a programming mode, e.g., via a status indication.

The motor drive unit 290 may be at least partially received within the coil 210. For example, the housing 292 of the motor drive unit 290 may define a battery compartment 211 (e.g., a cavity) configured to receive the battery 260 of the motor drive unit 290. When the battery-powered motorized window treatment 200 is in the extended position (e.g., pivoted) and the cover 250 is removed, the battery compartment 211 may be accessible.

The motor drive unit 290 of the battery-powered motorized window treatment 200 may include a battery holder 270. The battery holder 270 may be configured to securely fix the battery 260 in place while the battery 260 provides power to the motor drive unit 290. The battery 260 and battery holder 270 may be configured to be removed from the battery compartment 211 of the housing 292 along the longitudinal axis 216 of the coil 210. For example, the cover 250 may be removed (e.g., disengaged from the coil 210 and/or the housing 292 of the motor drive unit 290) so that the battery 260 and the battery holder 270 may be accessed. The battery holder 270 may be configured to translate (e.g., along the longitudinal axis 216 of the coil 210) until it is removed from the housing 292. When the battery holder 270 is removed from the battery compartment 211, the battery 260 may remain within the battery holder 270 of the motor drive unit 290. When the battery holder 270 is removed from the battery compartment 211 of the housing 292, the battery 260 may be removed from the battery holder. When the battery holder 270 is removed from the battery compartment 211 of the housing 292, a replacement battery may be installed within the battery holder. The battery holder 270 may be open at opposite ends, for example, so that the battery 260 may be electrically connected to a printed circuit board of the motor drive unit 290. For example, one of the batteries 260 (e.g., the battery distal to the end 213 of the coil 210 when the battery holder 270 is mounted within the battery compartment 211 of the housing 292) may be configured to abut a spring (e.g., such as the spring 384 shown in fig. 4) within the housing 292 of the motor drive unit 290. Also, one of the batteries 260 (e.g., the battery proximate to the end 213 of the coil 210 when the battery holder 270 is installed within the battery compartment 211 of the housing 292) may be configured to abut an electrical contact (e.g., electrical contact 356 shown in fig. 4) within the cover 250.

Fig. 4 and 5 depict an exemplary motorized window treatment 300 (e.g., such as the motorized window treatment 100 shown in fig. 1 and 2 and/or the battery-powered motorized window treatment 200 shown in fig. 3). Fig. 4 is a front cross-sectional view, and fig. 5 is an enlarged front cross-sectional view of the motorized window treatment 300. The motorized window treatment 300 may include a window treatment assembly 310 having a roller tube 311 and a motor drive unit 390. The coil 311 may be made of an electrically conductive material, such as aluminum or other suitable metal. The motor drive unit 390 may be powered by one or more batteries 360. Although not shown in fig. 4-5, the shade assembly can also include a flexible material (e.g., such as flexible materials 120, 220) and an idler (e.g., such as an idler of motorized shades 100, 200) windingly attached to the roller tube 311. The motorized window treatment 300 may also include one or more mounting brackets for mounting the motorized window treatment 300 to a structure, such as a first mounting bracket 330 (e.g., first mounting brackets 130A, 230A) for supporting the motor drive unit 390, and a second mounting bracket (e.g., second mounting brackets 130B, 230B) for supporting the idler. The first mounting bracket 330 and the second mounting bracket may be made of a conductive material such as aluminum or other suitable metal. In addition, the first and second mounting brackets 330 and 330 may be made of a non-conductive material such as plastic.

The motorized window treatment 300 may be adjusted between an operating position (e.g., as shown in fig. 1, 4, and 5) and an extended position (e.g., as shown in fig. 2 and 3) when secured to the first and second mounting brackets 330. The operational position may be defined as a position in which the coil assembly 310 is supported by and aligned with the first and second mounting brackets 330, 330 (e.g., as shown in fig. 1). The motorized window treatment 300 may be configured to operate between an operating position and an extended position, for example, to allow access to replace the battery 360. The extended position may be defined as a position in which the first end 312 of the coil assembly 310 is accessible while still attached to the first mounting bracket 330. The extended position may define a pivot position, for example, as shown in fig. 2 and 3, wherein one of the first mounting brackets 330 extends such that the battery 360 is accessible via the first end 312 of the roller tube assembly 310.

The first mounting bracket 330 and the second mounting bracket may be configured to attach the motorized window treatment 300 to a structure. The first mounting bracket 330 may define a base (e.g., such as base 132) and an arm 334. The base and arm 334 may define a fixed portion of the first mounting bracket 330. The first mounting bracket 330 may define a translating portion 336. The translating portion 336 may include an attachment member 338 configured to receive an end of the window covering assembly 310. For example, the attachment member 338 of the mounting bracket 330 may be configured to receive the motor drive unit 390. The attachment member 338 may define an aperture. The base may be configured to attach the first mounting bracket 330 to a structure. The structure may include a window frame (e.g., a top or side frame of the window frame), a wall, a ceiling, or other structure such that the motorized window treatment 300 is mounted proximate to (e.g., over or in) an opening such as a window. When the first mounting bracket 330 is attached to a vertical structure such as a wall, the arms 334 of the mounting bracket 330 may extend horizontally from the base.

The translating portion 336 may be configured to translate the window covering assembly 310 between an operating position (e.g., as shown in fig. 1) and an extended position (e.g., as shown in fig. 2). The translating portion 336 may be proximate to the base when in the operational position and distal to the base when in the extended position. When the translating portion 336 is in the extended position, the first end 312 (e.g., the end of the motor drive unit 390) of the coil assembly 310 may be accessible via the aperture (e.g., to replace the battery 360).

The arm 334 may define one or more features that enable the translating portion 336 to translate between the operating position and the extended position while maintaining attachment with the arm. The translating portion 336 may define one or more corresponding features configured to cooperate with one or more features on the arm 334. The arm 334 may define one or more slide rails 335 (e.g., an upper slide rail and a lower slide rail). The slide rails 335 may protrude from the inner surfaces of the arms 334. The translating portion 336 may define one or more channels (e.g., an upper channel and a lower channel) configured to receive the slide rail 335. The translating portion 336 may define, for example, an intermediate slide 339 between the channels. The arm 334 may define a channel (e.g., a middle channel) configured to receive the middle slide 339. The rails 335, 339 and the channel may define angled edges (e.g., tapered edges) such that the attachment of the translating portion 336 to the arm 334 defines interlocking rails, such as dove tail rails, for example. The translating portion 336 is translatable along the slide 335 between an operative position and an extended position.

Fig. 6 is a perspective view of the motor drive unit 390, and fig. 7 is an enlarged perspective view of an end portion of the motor drive unit 390. The motor drive unit 390 may include a housing 380. The housing 380 may include a body 381 and a cover 350 (e.g., cover 250). The body 381 may be cylindrical. The cover 350 may be configured to attach to the body 381. The housing 380 may include an upper portion 382A and a lower portion 382B. The motor drive unit 390 may be operatively coupled to the coil 311, for example, via a coupling 395 (e.g., a drive coupling). The coupler 395 may be an output gear driven by the motor 396 and transmitting the rotation of the motor 396 to the winding tube 311. For example, the coupler 395 may define a plurality of splines 397 around an outer edge thereof. The inner surface of the coil 311 may be groove-shaped. That is, the inner surface of the crimp tubing 311 may define a plurality of grooves (not shown). The splines 397 of the coupler 395 may be configured to engage corresponding grooves in the coil 311 such that rotation of the motor 396 is transferred to the coil 310, for example, via the coupler 395.

The motorized window treatment 300 (e.g., motor drive unit 390) may include a bearing assembly 320 having an inner bearing 322 and an outer bearing 324 located outside of the roller tube 311. The inner bearing 322 and the outer bearing 324 may be non-metallic (e.g., plastic) sleeve bearings. Bearing assembly 320 may be captured between coil 311 and mounting bracket 330 such that bearing assembly 320 may be located in gap 328 (e.g., a longitudinal gap) between coil 311 and mounting bracket 330. The components of the motorized window treatment 300 in and/or near the gap 328 may be non-conductive so as to minimize radio frequency field upsets and/or shielding. For example, the motorized window treatment 300 may not include conductive (e.g., metal) components in the area radially surrounding the gap 328. The inner bearing 322 may engage a housing 380 of a motor drive unit 390. The inner bearing 322 is operatively coupled to the motor drive unit housing 380. Fig. 8 is an enlarged perspective view of the end of the motor drive unit 390 with the bearing assembly 320 removed. For example, the inner bearing 322 may define splines (not shown) configured to be received by the grooves 386 around the outer edge of the housing 380 of the motor drive unit 390. The bearing 322 may be press fit onto the housing 380 of the motor drive unit 390. The outer bearing 324 may engage the roller tube 311. The outer bearing 324 may be operatively coupled to the coiled tube 311. The outer bearing 324 may rotate with the roller tube 311. The outer bearing 324 may be press fit into engagement with the roller tube 311. For example, the outer bearing 324 may include a plurality of splines 326 configured to engage grooves (not shown) of the roller tube 311. The inner bearing 322 may remain stationary with the motor drive unit housing 380 as the roller tube 311 rotates. In other words, the coil 311 and the outer bearing 324 may rotate about the inner bearing 322 and the housing 380 of the motor drive unit 390.

The motor drive unit 390 may include a battery holder 370 (e.g., battery holder 270). When the battery 360 provides power to the motor drive unit 390 and/or the cover 350, the battery holder 370 and the cover 350 may securely fix the battery 360 in place. The battery holder 370 may be configured to clamp the batteries 360 together (e.g., as shown in fig. 3) such that the batteries 360 may be removed from the motorized window treatment 300 simultaneously (e.g., together). The battery holder 370 may be received in a motor drive unit cavity 389 of the motor drive unit 390. The motor drive unit 390 may be received within the coil cavity 315 (fig. 4). The roller tube cavity 315 may be open near an end 313 of the roller tube 311 (e.g., the first end 312 of the window covering assembly 310). The battery 360 may be configured to be removed from the motor drive unit 390, for example, while the housing 380 of the motor drive unit 390 remains engaged with the first and second mounting brackets 330, 390. That is, the battery 360 may be configured to be removed from the motor drive unit 390 when the motorized window treatment 300 is in the pivoted position. The inner diameter of the inner bearing 322 may be greater than the outer diameter of the battery 360 and/or the battery holder 370.

The cover 350 may be configured to cover an end of the motor drive unit cavity 389. For example, the cover 350 may be received (e.g., at least partially) within the motor drive unit cavity 389. The cover 350 may include a button 352, a control interface printed circuit board 354, and electrical contacts 356 (e.g., conductive pads) electrically coupled to the control interface printed circuit board 354. The electrical contact 356 may be a positive electrical contact, for example, as shown in fig. 5. Alternatively, electrical contact 356 may be a negative electrical contact. The cover 350 may include a switch 355 (e.g., a mechanical tactile switch) mounted to the control interface printed circuit board 354 and configured to be actuated in response to actuation of the button 352. The buttons 352 may be illuminated by Light Emitting Diodes (LEDs) 358 mounted to a control interface printed circuit board 354.

The motor drive unit 390 may include a motor drive printed circuit board 392, an intermediate storage 394 and a gear assembly 398. The intermediate storage 394 may include one or more capacitors (e.g., super capacitors) and/or one or more rechargeable batteries. The battery 360 may be located between the cover 350 and the motor driving printed circuit board 392 of the motor driving unit 390. The motor drive unit 390 may also include a motor drive circuit (e.g., such as the motor drive circuit 820 shown in fig. 16) for driving the motor 396, a control circuit (e.g., such as the control circuit 830 shown in fig. 16) for controlling the motor drive circuit, and/or a wireless communication circuit 399 (e.g., such as the communication circuit 842 shown in fig. 16) mounted to the motor drive printed circuit board 392.

The motor drive unit 390 may include a spring 384 that may extend from an inner wall of the motor drive unit cavity 389. The spring 384 may be configured to abut and apply a force to one of the batteries 360, for example, such that the batteries 360 remain in contact with each other when installed within the motor drive unit cavity 389. The spring 384 may be electrically coupled to the motor drive printed circuit board 392 via a wire 385. Spring 384 may be a negative electrical contact, for example, as shown in fig. 4. Alternatively, the spring 384 may be the positive electrical contact. The spring 384 may be configured to apply a force to the battery 360 to maintain the electrical connection of the battery 360 with the spring 384 and the electrical contact 356 of the cover 350.

The buttons 352 may be configured to enable a user to alter one or more settings of the motorized window treatment 300. For example, the buttons 352 may be configured to change one or more settings of the control interface printed circuit board 354 and/or the motor drive printed circuit board 392. The button 352 may be configured to enable a user to pair the motorized window treatment 300 with a remote control device to allow wireless communication between the remote control device and a wireless communication circuit 399 mounted to the motor drive printed circuit board 392. The button 352 may be configured to provide a status indication to the user. For example, control buttons 352 may be configured to flash and/or change color to provide status indications to the user. The button 352 may be configured to indicate (e.g., via a status indication) whether the motor drive unit 390 is in a programming mode.

The control interface printed circuit board 354 and the motor drive printed circuit board 392 may be electrically connected. For example, motorized window treatment 300 may include a ribbon cable 386. The ribbon cable 386 may be attached to a connector 388 mounted to the control interface printed circuit board 354 and a similar connector mounted to the motor drive printed circuit board 392. The ribbon cable 386 may be configured to electrically connect the control interface printed circuit board 354 and the motor drive printed circuit board 392. The ribbon cable 386 may terminate at the control interface printed circuit board 354 and the motor printed circuit board 392. For example, the ribbon cable 386 may extend within the motor drive unit cavity 389. The ribbon cable 386 may include electrical conductors for providing power from the battery 360 to the control interface printed circuit board 354 and/or the motor drive printed circuit board 392. The ribbon cable 386 may include electrical conductors for conducting control signals (e.g., for transmitting one or more messages) between the control interface printed circuit board 354 and the motor drive printed circuit board 392. For example, the ribbon cable 386 may be configured to conduct power signals and/or control signals between the control interface printed circuit board 354 and the motor drive printed circuit board 392.

The motor drive unit 390 may also include an antenna 400 (e.g., as shown in fig. 5). For example, antenna 400 may include an insulated electrical conductor, such as a 22 gauge stranded wire with a polyvinyl chloride (PVC) coating. The antenna 400 may be wound (e.g., wrapped) around the body 381 of the housing 380. The antenna 400 may be located in one or more channels in the housing 380 of the motor drive unit 390, such as first and second peripheral (e.g., circumferential) channels 411, 412. The first peripheral channel 411 may include a first portion 411A formed in an outer surface 410A of the upper portion 382A of the housing 380 and a second portion 411B formed in an outer surface 410B of the lower portion 382B of the housing 380. The second peripheral channel 412 may include a first portion 412A formed in an outer surface 410A of the upper portion 382A of the housing 380 and a second portion 412B formed in an outer surface 410B of the lower portion 382B of the housing 380. The first and second peripheral channels 411 and 412 may extend around the perimeter of the housing 380 of the motor drive unit 390 such that the antenna 400 may be wound around the motor drive unit 390.

As shown in fig. 5, the antenna 400 may be wound on the housing 380 of the motor drive unit 390 adjacent to the end 313 of the coil 311. For example, the antenna 400 may be wound around the housing 380 of the motor drive unit 390 below the bearing assembly 320, e.g., such that the antenna 400 is located in an area around the perimeter of the motor drive unit and falls within an area defined by the bearing assembly 320. The antenna 400 may be wound on the motor drive unit 390 adjacent to (e.g., at least partially within the area defined by) the gap 328 between the coil 311 and the mounting bracket 330. For example, the antenna 400 may be aligned with the gap 328. Antenna 400 may transmit and/or receive RF signals through gap 328. In addition, when the antenna 400 is emitting electromagnetic waves, the electromagnetic waves may couple to the coil 311 (e.g., capacitively couple to the coil), which may generate a current (e.g., a standing wave) on the surface of the coil 611 (e.g., because the coil 311 is made of a conductive material). Accordingly, the coil 311 may re-radiate electromagnetic waves emitted by the antenna 400, which may increase the amount of RF signals transmitted and/or received by the antenna 400.

The distance between windings of the antenna 400 (e.g., in the longitudinal direction L) may be configured to prevent the antenna 400 from coupling with itself. For example, the distance between adjacent windings of the antenna 400 in the first and second peripheral channels 411, 412 may be about 0.1 inch to 0.4 inch (e.g., such as 0.2 inch). The first peripheral channel 411 may be positioned closer to the coil 311 than the second peripheral channel 412. For example, the first peripheral channel 411 may be near the outer edge of the coil 311 and partially below the coil 311 (e.g., but not entirely below the coil 311), as shown in fig. 5. For example, the second peripheral channel 412 may be positioned as far away from the first peripheral channel 411 as possible without being under or within the attachment portion 338 of the mounting bracket 330. The center of the first peripheral channel 411 may be, for example, about 0.20 inches from the center of the second peripheral channel 412. The first portion 382A and the second portion 382B of the housing 380 may be identical such that two separate types of unique housing components are not required to form the housing 380 of the motor drive unit 390. Since only one type of housing portion is required to form the housing 380, the manufacturer of the motor drive unit 390 can reduce component inventory.

Fig. 9 is a partially exploded view of the motor drive unit 390 looking up into the interior of the upper portion 382A of the housing 380. The motor drive unit 390 may include a coupling printed circuit board 420 for coupling the antenna 400 to a wireless communication circuit 399 mounted to the motor drive printed circuit board 392. The coupling printed circuit board 420 may be received in a recess 422 in an inner surface 424 of the upper portion 382A of the housing 380. For example, the coupling printed circuit board 420 may be retained in the recess 422 by one or more snaps 425. The coupling printed circuit board 420 may have a matching network circuit 426 mounted thereto. The matching network circuit 426 may be electrically coupled between the antenna 400 and a wireless communication circuit 399 mounted to the motor drive printed circuit board 392. The matching network circuit 426 may be electrically coupled to a wireless communication circuit 399 on the motor drive printed circuit board 392 via a coaxial cable 430, which may be electrically coupled to the coupling printed circuit board 420 via a coaxial connector 428. The matching network circuit 426 may be configured to optimize the performance of the antenna 400. For example, the matching network circuit 426 may be configured to match the impedance of the antenna 400 to the impedance of the wireless communication circuit 399 to obtain maximum power transfer between the antenna 400 and the wireless communication circuit 399. The matching network circuit 426 may include, for example, an inductor-capacitor (LC) filter. The coaxial cable 430 may extend through a coaxial cable channel 432 formed in the inner surface 424 of the upper portion 382A of the housing 380 and may be held in place by one or more lugs 434. The coaxial cable channel 432 may extend in the longitudinal direction L of the motorized window treatment 300. In addition, the wireless communication circuit 399 may be mounted to the coupling printed circuit board 420, and the wireless communication circuit 399 may be coupled to circuitry on the motor drive printed circuit board 392 via a cable, such as a ribbon cable (e.g., such as ribbon cable 386).

As shown in fig. 5, the antenna 400 may terminate at a coupled printed circuit board 430. For example, the antenna 400 may be received through a via 439 in the coupling printed circuit board 430 and soldered to an electrical pad surrounding the via 439 to electrically couple the antenna 400 to the matching network circuit 436. The antenna 400 may extend from a first peripheral channel 411 (e.g., a first portion 411A in an outer surface 411A of an upper portion 382A of the housing 380) to the coupling printed circuit board 430 through the intermediate channel 415 and the opening 416. The intermediate channel 415 may also be formed in an outer surface 410A of the upper portion 382A of the housing 380 and may extend in the longitudinal direction L of the motorized window treatment 300. The first and second peripheral channels 411, 412 and the intermediate channel 415 may meet (e.g., intersect) at a recess 414, which may also be formed in the outer surface 411A of the upper portion 382A of the housing 380.

When the antenna 400 exits the intermediate channel 415 from the coupling printed circuit board 430 and enters the recess 414, the wires of the antenna 400 may follow the first path 418A to extend along the first peripheral channel 411. The corners 417 of the recess 414 adjacent the antenna 400 may be rounded to facilitate wire bending of the antenna 400. The antenna 400 may extend through the first peripheral channel 411 and wrap entirely around the perimeter of the housing 380 and reenter the recess 414. After exiting the first peripheral channel 411 and entering the recess 414, the wires of the antenna 400 may extend (e.g., diagonally) across the recess 414 along a second path 418B and into the second peripheral channel 412. The antenna 400 may extend through the second peripheral channel 412 and be wound (e.g., partially or fully wound) around the housing 380 and terminate in the second peripheral channel 412. The wires of the antenna 400 may be held in the first and second peripheral channels 411, 412 and the intermediate channel 415 by lugs 419.

When the wireless communication circuit 399 drives the antenna 400 with a signal, the antenna 400 may emit electromagnetic waves (e.g., radio frequency signals). As previously mentioned, the antenna 400 may be wound on the motor drive unit 390 below the bearing assembly 320 (e.g., which is made of a non-conductive material such as plastic) and adjacent the gap 328 between the coil 311 and the mounting bracket 330. When the antenna 400 emits electromagnetic waves, the electromagnetic waves may be coupled to the coil 311 (e.g., which may be made of a conductive material such as aluminum), which may generate an electrical current on the surface of the coil 311. Accordingly, the coiled pipe 311 may re-radiate electromagnetic waves emitted by the antenna 400.

Although the antenna 400 is shown in fig. 4-9 as being wound around the motor drive unit 390 one or more times, the antenna 400 may be wound around the motor drive unit 390 in other ways and/or shapes. For example, one or more channels in which the antenna 400 is located may be formed on the inner surface 424 of the upper portion 382A of the housing 380. In addition, the antenna 400 may be located inside the housing 380 of the motor drive unit 390 (e.g., extending through one or more tunnels in the housing 380). Alternatively, one or more channels in which the antenna 400 is located may be formed in the bearing assembly 320 (e.g., such as the fixed bearing 322).

Fig. 10 is an enlarged front cross-sectional view of another example motorized window treatment 300' (e.g., such as the motorized window treatment 100 shown in fig. 1 and 2, the battery-powered motorized window treatment 200 shown in fig. 3, and/or the motorized window treatment 300 shown in fig. 4 and 5). The motorized window treatment 300' may include a window treatment assembly 310 having a roller tube 311 and a motor drive unit 390. The motor drive unit 390 may be powered by one or more batteries 360. Although not shown in fig. 10, the window covering assembly 310 may also include a flexible material (e.g., such as flexible materials 120, 220) and an idler (e.g., such as an idler of motorized window shades 100, 200) windingly attached to the roller tube 311. The motorized window treatment 300 may also include one or more mounting brackets for mounting the motorized window treatment 300' to a structure, such as a first mounting bracket 330 (e.g., first mounting brackets 130A, 230A) for supporting the motor drive unit 390, and a second mounting bracket (e.g., second mounting brackets 130B, 230B) for supporting the idler.

Fig. 11 is a top view of the flexible printed circuit board 440 'of the motor drive unit 390 of the motorized window treatment 300' (e.g., shown in an extended state). The motor driving unit 390 may include an antenna 400 'that may be formed on the flexible printed circuit board 440'. For example, the flexible printed circuit board 440' may replace wires (e.g., of the motorized window treatment 300 shown in fig. 4 and 5) that couple the printed circuit board 420 and the antenna 400. The flexible printed circuit board 440' may include an antenna portion 421' (e.g., an elongated portion) and a coupling portion 420'. The antenna 400' may include electrical traces (e.g., electrical conductors) extending through the antenna portion 421' of the flexible printed circuit board 440' and may operate as an antenna to radiate RF signals. The antenna 400' (e.g., the antenna portion 421' of the flexible printed circuit board 440 ') may be located in one or more channels in the housing 380 of the motor drive unit 390, such as the first and second peripheral (e.g., circumferential) channels 411, 412. The first peripheral channel 411 may include a first portion 411A formed in an outer surface 410A of the upper portion 382A of the housing 380 and a second portion 411B formed in an outer surface 410B of the lower portion 382B of the housing 380. The second peripheral channel 412 may include a first portion 412A formed in an outer surface 410A of the upper portion 382A of the housing 380 and a second portion 412B formed in an outer surface 410B of the lower portion 382B of the housing 380. The first and second peripheral channels 411 and 412 may extend around the periphery of the housing 380 of the motor drive unit 390 such that the antenna 400' (e.g., the antenna portion 421' of the flexible printed circuit board 440 ') may be wound on the motor drive unit 390.

As shown in fig. 11, the antenna portion 421' of the flexible printed circuit board 440' may extend from the coupling portion 420'. The antenna portion 421' of the flexible printed circuit board 440' may define first and second portions 402', 404' configured to be wrapped around the housing 380 of the motorized window treatment 300 '. The antenna portion 421' of the flexible printed circuit board 440' may define a third portion 406' connecting the first portion 402' and the second portion 404 '. For example, the third portion 406 'may be substantially perpendicular to the first portion 402' and the second portion 404 'such that when the antenna 400' is wrapped around the housing 380 of the motorized window treatment 300', the first portion 402' and the second portion 404 'are spaced apart (e.g., a distance apart in a longitudinal direction L defined by the length of the third portion 406'). For example, when the antenna 400' is wrapped around the housing 380 of the motorized window treatment 300', the third portion 406' may extend through the recess 414 between the first and second peripheral channels 411, 412.

The matching network circuit 426 may be mounted to the coupling portion 420 'of the flexible printed circuit board 420'. For example, the coupling portion 420 'of the flexible printed circuit board 440' may be located in a recess 422 in the inner surface 424 of the upper portion 382A of the housing 380. The antenna portion 421 'of the flexible printed circuit board 440' may further define a middle portion 408 'that connects the first portion 402' of the antenna portion 421 'to the coupling portion 420'. For example, when the antenna 400' is wrapped around the housing 380 of the motorized window treatment 300', the intermediate portion 408' may extend through the intermediate channel 415 between the recess 422 and the first peripheral channel 411. The antenna portion 421' may extend from the matching network circuit 426 on the coupling portion 420' of the flexible printed circuit board 440' in the recess 422 through the opening 415, the intermediate channel 415, and the first and second peripheral channels 411, 412. Since the flexible printed circuit board 420' is flexible, the antenna portion 421' may be configured to be wound around the case 380 when the antenna portion 421' extends through the first and second peripheral channels 411. When the antenna portion 421' is wound (e.g., wrapped) on the housing 380, the third portion 406' and the intermediate portion 408' may extend in the longitudinal direction L. The matching network circuit 426 may be electrically coupled to the motor drive printed circuit board 392 via a coaxial cable 430, which may be connected to a coaxial connector 428 and may extend through a coaxial cable channel 432. The antenna 400' may be electrically coupled to the wireless communication circuit 399 on the motor drive printed circuit board 392 via the matching network circuit 426 on the coupling portion 420' of the flexible printed circuit board 440' such that the electrical traces on the antenna portion 421' of the flexible printed circuit board 440' may radiate RF signals.

As shown in fig. 10, an antenna 400' (e.g., an antenna portion 421' of a flexible printed circuit board 440 ') may be wound on a housing 380 of a motor drive unit 390 adjacent to an end 313 of a winding tube 311. For example, the antenna 400 'may be wound around the housing 380 of the motor drive unit 390 below the bearing assembly 320, e.g., such that the antenna 400' is located in an area around the perimeter of the motor drive unit and falls within an area defined by the bearing assembly 320. The antenna 400' may be wound on the motor drive unit 390 adjacent to (e.g., at least partially within the area defined by) the gap 328 between the coil 311 and the mounting bracket 330. For example, the antenna 400' may be aligned with the gap 328. Antenna 400' may transmit and/or receive RF signals through gap 328. In addition, when the antenna 400' is emitting electromagnetic waves, the electromagnetic waves may couple to the coil 311 (e.g., capacitively couple to the coil), which may generate a current (e.g., a standing wave) on the surface of the coil 311 (e.g., because the coil 311 is made of a conductive material). Accordingly, the coil 311 may re-radiate electromagnetic waves emitted by the antenna 400', which may increase the amount of RF signals transmitted and/or received by the antenna 400'.

The distance between windings of the antenna 400 '(e.g., in the longitudinal direction L) may be configured to prevent the antenna 400' from coupling with itself. For example, when the antenna 400' (e.g., the electrical traces of the antenna portion 421' of the flexible printed circuit board 440 ') is received within the first and second peripheral channels 411, 412, the first portion 402' of the antenna 400' may be spaced a distance from the second portion 404' of the antenna 400 '. For example, the distance between adjacent windings of the antenna 400' in the first and second peripheral channels 411, 412 may be about 0.1 inch to 0.4 inch (e.g., such as 0.2 inch). The first peripheral channel 411 may be positioned closer to the coil 311 than the second peripheral channel 412. For example, the first peripheral channel 411 may be near the outer edge of the coil 311 and partially below the coil 311 (e.g., but not entirely below the coil 311), as shown in fig. 10. For example, the second peripheral channel 412 may be positioned as far away from the first peripheral channel 411 as possible without being under or within the attachment portion 338 of the mounting bracket 330. The center of the first peripheral channel 411 may be, for example, about 0.20 inches from the center of the second peripheral channel 412.

Fig. 12 is an enlarged front cross-sectional view of another example motorized window treatment 300 ". The motorized window treatment 300 "may include a motor drive unit 390' having an antenna 500. The motorized window treatment 300 "and motor drive unit 390' may have many similar components to the motorized window treatment 300 and motor drive unit 390, respectively, shown in fig. 2-9. The motor drive unit 390 'may include a housing 380'. The housing 380 'may include a body 381' and a cover 350 (e.g., cover 250). The body 381' may be cylindrical. The cover 350 may be configured to attach to the body 381. The body 381' may include an upper portion 382A ' and a lower portion 382B '. Fig. 13 is an enlarged perspective view of the end of the motor drive unit 390' with the bearing assembly (e.g., bearing assembly 320) removed. Rather than including first and second peripheral channels 411, 412 that extend parallel to each other and around the perimeter of the motor drive unit 390, the motor drive unit 390' may include a spiral channel 511 (e.g., around the outer edge of the housing 380 ') that extends around the housing 380' (e.g., the body 381 ') of the motor drive unit 390'. The spiral channel 511 may be a continuous spiral further and further from the coil 311 in the longitudinal direction L. The antenna 500 may be positioned within the spiral channel 511 such that the antenna 500 may be wound around the motor drive unit 390'. For example, antenna 500 may be received within helical channel 511. The distance between windings of the antenna 500 (e.g., in the longitudinal direction L) may be configured to prevent the antenna 500 from coupling with itself. For example, the distance between adjacent windings (e.g., wound portions) of the antenna 500 in the helical channel 511 may be about 0.1 inch to 0.4 inch (e.g., such as 0.2 inch). For example, antenna 500 may include an insulated electrical conductor, such as a 22 gauge stranded wire with a polyvinyl chloride (PVC) coating.

The upper portion 382A ' of the housing 382' may include a first channel portion 511A, a second channel portion 512A, a third channel portion 513A, and a fourth channel portion 514A formed in the outer surface 510A of the upper portion 382A '. The lower portion 382B 'of the housing 382' may be identical to the upper portion 382A 'and may include a first channel portion 511B, a second channel portion 512B, a third channel portion 513B, and a fourth channel portion (not shown) formed in the outer surface 510B of the lower portion 382B'. The fourth channel portion of the lower portion 382B 'of the housing 382' may be similar (e.g., identical) to the fourth channel portion 514A of the upper portion 382A 'and may be aligned with the third channel portion 513A of the upper portion 382A'. The spiral channel 511 in which the antenna 500 is located may include a first channel portion 511A of the upper portion 382A ', a second channel portion 512B of the lower portion 382B', a third channel portion 513A of the upper portion 382A ', and a fourth channel portion of the lower portion 382B'.

The upper portion 382A ' of the housing 382' may include a second spiral channel 512, which second spiral channel 512 remains empty when the antenna 500 is spirally wound on the motor drive unit 390', may include a second channel portion 512A of the upper portion 382A ', a first channel portion 511B of the first lower portion 382B ', and a third channel portion 513B of the lower portion 382B ', and a fourth channel portion 514A of the upper portion 382A '. The first portion 382A ' and the second portion 382B ' of the housing 380' may be identical such that two separate types of unique housing components are not required to form the housing 380' of the motor drive unit 390 '. Since only one type of housing portion is required to form the housing 380', the manufacturer of the motor drive unit 390' is able to reduce component inventory. Because the upper portion 382A ' and the lower portion 382B ' are identical, the housing 380' may include a second spiral channel formed by the first channel portion 511B of the lower portion 382B ', the second channel portion 512A of the upper portion 382A ', the third channel portion 513B of the lower portion 382B ', and the fourth channel portion 514A of the upper portion 382A '.

Although the body 380 'of the housing 380' of the motor drive unit 390 'is shown in the figures as having identical upper 382A' and lower 382B 'portions, it should be understood that the body 381' may alternatively be a single piece, two different pieces, or more than two pieces. Although the antenna 500 is shown in fig. 12 and 13 as being wound one or more times around the housing 380 '(e.g., body 380') of the motor drive unit 390', the antenna 500 may be wound on the motor drive unit 390' in other manners and/or shapes. For example, a helical channel 511 in which the antenna 500 is located may be formed on the inner surface 424 of the upper portion 382A' of the body 380 ". In addition, the antenna 500 may be located inside a housing 380 '(e.g., body 380') of the motor drive unit 390 '(e.g., extending through one or more tunnels in the housing 380'). While the spiral channel 511 is shown as being located on the outer surfaces 510A, 510B of the housing 380', it should be appreciated that the spiral channel 511 may alternatively be located on the bearing assembly 320 (e.g., such as the fixed bearing 322).

As shown in fig. 12, the antenna 500 may be wound around the motor drive unit 390 'below the bearing assembly 320, for example, such that the antenna 400 is located in an area around the perimeter of the motor drive unit 390' and falls within an area defined by the bearing assembly 320. The antenna 500 may be wound (e.g., helically wound) on the motor drive unit 390' adjacent to the gap 328 between the coil 311 and the mounting bracket 330 (e.g., at least partially within the area defined by the gap 328). For example, the antenna 500 may be aligned with the gap 328. Antenna 500 may transmit and/or receive RF signals through gap 328. Because components (e.g., all components) of motorized window treatment 300 in and/or near gap 328 are non-conductive, interference and/or disruption to RF signals transmitted and/or received by antenna 500 may be minimized (e.g., prevented). As the antenna 500 follows the helical channel 511, the helical channel 511 may continuously move the antenna 500 away from the coil 311 in the longitudinal direction L.

Fig. 14 is a partially exploded view of the motor drive unit 390' looking up into the interior of the upper portion 382A ' of the housing 380 '. The motor drive unit 390' may include a coupling printed circuit board 520 for coupling the antenna 500 to a wireless communication circuit 399 mounted to the motor drive printed circuit board 392. The coupling printed circuit board 520 may be received in a recess 522 in an inner surface 524 of the upper portion 382A 'of the housing 380'. For example, the coupling printed circuit board 520 may be held in the recess 522 by one or more snaps 525. The coupling printed circuit board 520 may have a matching network circuit 526 mounted thereto. The matching network circuit 526 may be electrically coupled between the antenna 500 and a wireless communication circuit 399 mounted to the motor drive printed circuit board 392. The matching network circuit 526 may be electrically coupled to the wireless communication circuit 399 on the motor drive printed circuit board 392 via a coaxial cable 530, which may be electrically coupled to the coupling printed circuit board 520 via a coaxial connector 528. The matching network circuit 526 may be configured to optimize the performance of the antenna 500. For example, the matching network circuit 526 may be configured to match the impedance of the antenna 500 to the impedance of the wireless communication circuit 399 to obtain maximum power transfer between the antenna 500 and the wireless communication circuit 399. The matching network circuit 526 may include, for example, an inductor-capacitor (LC) filter. The coaxial cable 530 may extend through a coaxial cable channel 532 formed in the inner surface 524 of the upper portion 382A 'of the housing 380'. The coaxial cable 530 may be held in place within the coaxial cable channel 532 by one or more lugs 534. The coaxial cable channel 532 may extend in the longitudinal direction L of the motorized window treatment 300'. In addition, the wireless communication circuit 399 may be mounted to the coupling printed circuit board 520, and the wireless communication circuit 399 may be coupled to circuitry on the motor drive printed circuit board 392 via a cable, such as a ribbon cable (e.g., such as ribbon cable 386).

As shown in fig. 12, the antenna 500 may terminate at a coupling printed circuit board 530. For example, the antenna 500 may be received through a through hole 539 in the coupling printed circuit board 530. The antenna may be soldered to an electrical pad surrounding the via 539, for example, to electrically couple the antenna 500 to the matching network circuit 536. The antenna 500 may extend from the spiral channel 511 (e.g., the first portion 511A in the upper portion 382A 'of the housing 380') through the intermediate channel 515 and the opening 516 to the coupling printed circuit board 530. The intermediate channel 515 may also be formed in the outer surface 510A of the upper portion 382A 'of the housing 380 and may extend in the longitudinal direction L of the motorized window treatment 300'.

When the antenna 500 exits the intermediate channel 515 from the coupling printed circuit board 530 and enters the helical channel 511, the wire of the antenna 500 may follow the first path 518A to extend along the first channel portion 511A in the upper portion 382A'. The corner 517 of the first channel portion 511A of the upper portion 382A' adjacent to the antenna 500 may be rounded to facilitate wire bending of the antenna 500. The antenna 500 may extend through the helical channel 511 and wrap entirely around the perimeter of the housing 380' one or more times. The antenna 500 may extend through the first channel portion 511A of the upper portion 382A ', the second channel portion 512B of the lower portion 382B', the third channel portion 513A of the upper portion 382A ', and the fourth channel portion of the lower portion 382B'. For example, the antenna 500 may extend along the second path 518B from the second channel portion 512B of the lower portion 382B 'to the third channel portion 513A of the upper portion 382A'. In other words, the second path 518B of the antenna 500 may extend from the second channel portion 512B of the lower portion 382B 'to the third channel portion 513A of the upper portion 382A'. The antenna 500 may or may not extend the entire length of the helical channel 511. For example, the antenna 500 may not extend into the fourth channel portion of the lower portion 382B'. The wires of antenna 500 may be held in helical channel 511 and intermediate channel 515 by lugs 519. For example, the ledge 519 may be configured to retain the antenna 500 within the helical channel 511.

When the wireless communication circuit 399 drives the antenna 500 with a signal, the antenna 500 may emit electromagnetic waves (e.g., radio frequency signals). As previously mentioned, the antenna 500 may be wound on the motor drive unit 390' below the bearing assembly 320 (e.g., which is made of a non-conductive material such as plastic) and adjacent the gap 328 between the coil 311 and the mounting bracket 330. When the antenna 500 emits electromagnetic waves, the electromagnetic waves may be coupled to the coil 311 (e.g., which may be made of a conductive material such as aluminum), which may generate an electrical current on the surface of the coil 311. Accordingly, the coiled pipe 311 may re-radiate electromagnetic waves emitted by the antenna 500. Because the antenna 500 extends through the helical channel 511, the antenna 500 may move away from the coil more quickly, which may allow more electromagnetic waves to couple to the coil 311 (e.g., than extend through the first and second peripheral channels 411, 412).

In some examples, the antenna 500 may be formed on a flexible printed circuit board (not shown). The flexible printed circuit board may replace wires coupling the printed circuit board 520 and the antenna. The matching network circuit 526 may be mounted to a flexible printed circuit board, such as a coupling portion of a flexible printed circuit board that is mounted to a recess 522 in the inner surface 524 of the upper portion 382A 'of the housing 380'. The flexible printed circuit board may include an antenna portion (e.g., an elongated portion) having electrical traces (e.g., electrical conductors) that may operate as an antenna to radiate RF signals. The antenna portion may extend from a matching network circuit 526 on a portion of the flexible printed circuit board in recess 522 through opening 515, intermediate channel 515, and spiral channel 511. Since the flexible printed circuit board is flexible, the antenna portion may be configured to be wound around the housing 380' as the antenna portion extends through the first and second peripheral channels 511. The matching network circuit 526 may be electrically coupled to the motor drive printed circuit board 392 via a coaxial cable 530 extending through a coaxial cable channel 532.

Fig. 15 is a front cross-sectional view of an exemplary motorized window treatment 600. The motorized window treatment 600 may include a window treatment assembly (e.g., window treatment assembly 310) having a roller tube 611 (e.g., roller tube 311) and a motor drive unit 690. The coil 611 may be made of an electrically conductive material, such as aluminum or other suitable metal. The motor drive unit 690 may be powered by one or more batteries 660 (e.g., battery 360). Although not shown in fig. 4-5, the window covering assembly may also include a flexible material (e.g., such as flexible materials 120, 220) and an idler (e.g., such as an idler of motorized window shades 100, 200) windingly attached to the roller tube 611. The motorized window treatment 600 may also include one or more mounting brackets for mounting the motorized window treatment 600 to a structure, such as a first mounting bracket 630 (e.g., first mounting brackets 130A, 230A, 330) for supporting the motor drive unit 690, and a second mounting bracket (e.g., second mounting brackets 130B, 230B) for supporting the idler. The first and second mounting brackets 630, 630 may be made of a conductive material such as aluminum or other suitable metal. In addition, the first and second mounting brackets 630, 630 may be made of a non-conductive material such as plastic. For example, the first mounting bracket 630 may be the same as the first mounting bracket 330 shown in fig. 4 to 9. The motorized window treatment 600 may be adjusted between an operating position (e.g., as shown in fig. 1, 4, and 5) and an extended position (e.g., as shown in fig. 2 and 3) when secured to the first and second mounting brackets 630.

The motor drive unit 690 may include a housing 680. The housing 680 may include a body 681 and a cover 650 (e.g., cover 250 and/or cover 350). The body 681 may be cylindrical. The cover 650 may be configured to be attached to the body 681. The body 681 may include an upper portion 682A and a lower portion 682B. The motor drive unit 690 may be operatively coupled to the coil 611, for example, via a coupler (e.g., coupler 395). The coupling may be an output gear that transmits rotation of a motor (e.g., motor 396) to the coiled tube 611. The motorized window treatment 600 (e.g., motor drive unit 390) may include a bearing assembly 620 that may be captured between the roller tube 611 and the mounting bracket 630. For example, bearing assembly 620 may be identical to bearing assembly 320. Bearing assembly 620 may be made of a non-metallic (e.g., plastic) sleeve bearing. The bearing assembly 620 may be captured between the coil 611 and the mounting bracket 630 such that the bearing assembly 620 may be located in a gap 628 (e.g., a longitudinal gap) between the coil 611 and the mounting bracket 630. The components of the motorized window treatment 600 in and/or near the gap 628 may be non-conductive so as to minimize radio frequency field upsets and/or shielding. For example, the motorized window treatment 600 may not include conductive (e.g., metal) components in the region radially surrounding the gap 628.

The motor drive unit 690 may include a battery holder 670 (e.g., battery holders 270, 370). When the battery 660 provides power to the motor drive unit 690 and/or the cover 650, the battery holder 670 and the cover 650 may securely fix the battery 660 in place. The battery holder 670 may be configured to clamp the battery 660 together such that the battery 660 may be removed from the motorized window treatment 600 simultaneously (e.g., together). The battery holder 670 may be received in a motor drive unit cavity 689 of the motor drive unit 690. The battery 660 may be configured to be removed from the motor drive unit 690, for example, while the housing 680 of the motor drive unit 690 remains engaged with the first mounting bracket 630 and the second mounting bracket. That is, the battery 660 may be configured to be removed from the motor drive unit 690 when the motorized window treatment 300 is in the pivoted position.

The cover 650 may be configured to cover an end of the motor drive unit cavity 689. For example, the cover 650 may be received (e.g., at least partially) within the motor drive unit cavity 689. The cover 650 may include a first portion 651 and a second portion 653. The cover 650 may include a button 652 (e.g., formed as part of the first portion 651 of the cover 650), a control interface printed circuit board 654 (e.g., housed between the first portion 651 and the second portion 653)), and electrical contacts 656 (e.g., conductive pads) electrically coupled to the control interface printed circuit board 654. For example, electrical contact 656 may be a positive electrical contact. Alternatively, the electrical contact 656 may be a negative electrical contact. The cover 650 may include a switch 655 (e.g., a mechanical tactile switch) mounted to the control interface printed circuit board 654 and configured to be actuated in response to actuation of the button 652. The buttons 652 may be illuminated by Light Emitting Diodes (LEDs) 658 mounted to a control interface printed circuit board 654. The motor drive unit 690 may also include a wireless communication circuit (e.g., wireless communication circuit 399) mounted to the printed circuit board 654.

As with the motor drive unit 390 shown in fig. 4, the motor drive unit 690 may include a motor drive printed circuit board (e.g., motor drive printed circuit board 392), an intermediate storage device (e.g., intermediate storage device 394), and a gear assembly (e.g., gear assembly 398). The battery 660 may be located between the cover 650 and the motor driving printed circuit board of the motor driving unit 690. The motor driving printed circuit board may be mounted with a motor driving circuit for driving the motor and a control circuit for controlling the motor driving circuit mounted to the motor driving printed circuit board. The motor drive unit 690 may include a spring (e.g., spring 384) configured to abut and apply a force to one of the batteries 660, e.g., such that the batteries 660 remain in contact with each other when installed within the motor drive unit cavity 689 (e.g., to maintain electrical connection of the batteries 660 with the electrical contacts 656 of the spring and cover 650). The spring may be electrically coupled to the motor drive printed circuit board and may be a negative electrical contact. Alternatively, the spring may be the positive electrical contact.

The buttons 652 may be configured to enable a user to alter one or more settings of the motorized window treatment 600. For example, the buttons 652 may be configured to change one or more settings of the control interface printed circuit board 654 and/or the motor drive printed circuit board. The button 652 may be configured to enable a user to pair the motorized window treatment 600 with a remote control device to allow wireless communication between the remote control device and wireless communication circuitry mounted to the interface printed circuit board 654. The button 652 may be configured to provide a status indication to the user. For example, control buttons 652 may be configured to flash and/or change color to provide status indications to the user. The button 652 may be configured to indicate (e.g., via a status indication) whether the motor drive unit 690 is in a programming mode.

The control interface printed circuit board 654 and the motor drive printed circuit board may be electrically connected. For example, motorized window treatment 600 may include a ribbon cable 686. The ribbon cable 686 may be attached to a connector 688 mounted to the control interface printed circuit board 654 and a similar connector mounted to the motor drive printed circuit board. The ribbon cable 686 may be configured to electrically connect the control interface printed circuit board 654 and the motor drive printed circuit board. Ribbon cable 686 may terminate at control interface printed circuit board 654 and motor printed circuit board. For example, a ribbon cable 686 may extend within the motor drive unit cavity 689. The ribbon cable 686 may include electrical conductors for providing power from the battery 660 to the control interface printed circuit board 654 and/or the motor drive printed circuit board. The ribbon cable 686 may include electrical conductors for conducting control signals (e.g., for transmitting one or more messages) between the control interface printed circuit board 654 and the motor drive printed circuit board. For example, the ribbon cable 686 may be configured to conduct power signals and/or control signals between the control interface printed circuit board 654 and the motor drive printed circuit board.

The motor drive unit 690 may also include an antenna 700. For example, antenna 700 may include an insulated electrical conductor, such as a 22 gauge stranded wire with a polyvinyl chloride (PVC) coating. The antenna 700 may be wound (e.g., wrapped) around the housing 680. The antenna 700 may be located in a channel 711 (e.g., a spiral channel) extending around the cover 650 of the housing 630 of the motor drive unit 690 (e.g., around an outer edge of the cover 650) such that the antenna 700 may be wound (e.g., wrapped) around the cover 650. For example, the channel 711 may be shaped similar to the spiral channel 511 extending around the housing 380 'of the motor drive unit 390' (e.g., as shown in fig. 11). The channel 711 may be a continuous spiral further and further from the coil 611 in the longitudinal direction L. Alternatively, the channel 711 may include at least two peripheral channels (e.g., similar to the first peripheral channel 411 and the second peripheral channel 412) extending parallel to each other around the perimeter of the cover 650. The at least two peripheral channels may be joined together at a recess (e.g., similar to recess 414) such that the electrical conductors of antenna 700 are configured to pass from one peripheral channel 711 to the other peripheral channel via the recess. The antenna 700 may be positioned within the channel 711 such that the antenna 700 may be wrapped around the cover 650. The wires of antenna 700 may be held in channel 711 by lugs (e.g., lugs 419). The distance between windings of the antenna 700 (e.g., in the longitudinal direction L) may be configured to prevent the antenna 700 from coupling with itself. For example, antenna 700 may include an insulated electrical conductor, such as a 22 gauge stranded wire with a polyvinyl chloride (PVC) coating.

As shown in fig. 15, the antenna 700 may be wound on the cover 650 of the housing 680 of the motor drive unit 690 adjacent the end 613 of the coil 611. For example, the antenna 700 may be wrapped around the cover 650 of the housing 680 adjacent the gap 628 between the coil 611 and the mounting bracket 630. Antenna 700 may transmit and/or receive RF signals through gap 628. In addition, the antenna 700 may be configured to couple (e.g., capacitively couple) to the coil 611 (e.g., when the coil 611 is made of a conductive material) such that a standing wave is generated on the surface of the coil 611, which may increase the amount of RF signals transmitted and/or received by the antenna 700.

As shown in fig. 15, a channel 711 may be formed in an inner surface of the second portion 653 of the cover 650. In addition, the channels 711 may be formed in the outer surface of the second portion 653 and/or the inner or outer surface of the first portion 651. Instead of the channel 711 being a single spiral channel, the cover 650 of the housing 680 may include one or more channels, such as parallel peripheral (e.g., circumferential) channels (e.g., as with the first and second peripheral channels 411, 412 in the housing 380 of the motor drive unit 390 shown in fig. 8).

The antenna 700 may be mechanically and electrically coupled to the control interface printed circuit board 654 for electrical coupling to wireless communication circuitry on the control interface printed circuit board 654. The control interface printed circuit board 654 may have a matching network circuit (e.g., similar to matching network circuit 426) mounted thereto. The matching network circuit may be electrically coupled between the antenna 700 and the wireless communication circuit mounted to the control interface printed circuit board 654. The matching network circuitry on the control interface printed circuit board 654 may be configured to optimize the performance of the antenna 700. For example, the matching network circuit may be configured to match the impedance of the antenna 700 to the impedance of the wireless communication circuit on the control interface printed circuit board 654 to obtain maximum power transfer between the antenna 700 and the wireless communication circuit. The matching network circuit may include, for example, an inductor-capacitor (LC) filter. The wireless communication circuitry on the control interface printed circuit board 654 may be electrically coupled to the motor control circuitry on the motor control printed circuit board via a ribbon cable 686. Alternatively, the wireless communication circuit may be mounted to a motor drive printed circuit board, and the matching network circuit on the control interface printed circuit board 654 may be electrically coupled to the wireless communication circuit via a coaxial cable (e.g., coaxial cable 430). The coaxial cable may extend through a coaxial cable channel in the longitudinal direction L of the motorized window treatment 600 (e.g., similar to the coaxial cable channel 432 formed in the inner surface 424 of the upper portion 382A of the housing 380).

When the wireless communication circuitry on the control interface printed circuit board 654 drives the antenna 700 with a signal, the antenna 700 may emit electromagnetic waves (e.g., radio frequency signals). As previously mentioned, the antenna 700 may be wound on the cover 650 of the housing 680 of the motor drive unit 690 adjacent to the gap 628 between the coil 611 and the mounting bracket 630. When the antenna 700 emits electromagnetic waves, the electromagnetic waves may couple to the coil 611 (e.g., which may be made of a conductive material such as aluminum), which may generate a current (e.g., a standing wave) on the surface of the coil 611. Accordingly, the coil 311 may re-radiate electromagnetic waves emitted by the antenna 700.

Although the antenna 700 is shown in fig. 15 as being wound around the motor drive unit 390 one or more times, the antenna 700 may be wound around the motor drive unit 390 in other manners and/or shapes. For example, one or more channels in which the antenna 700 is located may be formed on the inner surface 424 of the upper portion 382A of the housing 380. In addition, the antenna 700 may be located inside the housing 380 of the motor drive unit 390 (e.g., extending through one or more tunnels in the housing 380). Alternatively, one or more channels in which the antenna 700 is located may be formed in the bearing assembly 320 (e.g., such as the fixed bearing 322).

Fig. 16 is a block diagram of an exemplary motor drive unit 800 (e.g., motor drive unit 390 shown in fig. 4-9, motor drive unit 390 shown in fig. 12-14, and/or motor drive unit 690 shown in fig. 15) of a motorized window treatment (e.g., such as motorized window treatment 100 shown in fig. 1-2, motorized window treatment 200 shown in fig. 3, motorized window treatment 300 shown in fig. 4-5, motorized window treatment 300' shown in fig. 12-14, and/or motorized window treatment 600 shown in fig. 15). The motor drive unit 800 may include a motor 810 (e.g., a Direct Current (DC) motor) that may be coupled for raising and lowering the cover material. For example, the motor 810 may be coupled to a roller tube of a motorized window treatment (e.g., roller tube 311 shown in fig. 4-5) for rotating the roller tube to raise and lower a flexible material (e.g., shade fabric). The motor drive unit 800 may include a load control circuit, such as may generate a Pulse Width Modulated (PWM) voltage V for driving the motor 810 (e.g., to move the cover material between the fully raised and fully lowered positions) _PWM A motor drive circuit 820 (e.g., an H-bridge drive circuit). In addition, the control circuit 830 may be configured to generate a signal for controlling the rotational direction of the motor 810 A direction signal.

The motor driving unit 800 may include a control circuit 830 for controlling the operation of the motor 810. The control circuit 830 may include, for example, a microprocessor, a Programmable Logic Device (PLD), a microcontroller, an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA), or any suitable processing device or control circuit. The control circuit 830 may be configured to generate a driving signal V _DRV For controlling the motor drive circuit 820 to control the rotational speed of the motor 810 (e.g., the motor drive circuit 820 receives the drive signal V _DRV And controls the H-bridge circuit in response to the drive signal, for example with an appropriate PWM signal). In an example, the drive signal V _DRV A pulse width modulated signal may be included and the rotational speed of the motor 810 may depend on the duty cycle of the pulse width modulated signal. In an example, the control circuit 830 may directly control the motor 810 (e.g., in a configuration without a separate motor drive circuit 820). For example, the control circuit may generate two PWM signals for controlling the duty cycle and polarity (e.g., controlling speed and direction) of the motor 810. In addition, the control circuit 830 may be configured to generate a direction signal V _DIR For controlling the motor driving circuit 820 to control the rotation direction of the motor 810. The control circuit 830 may be configured to control the motor 810 to be in the fully raised position P _FULLY-RAISED And a fully lowered position P _FULL-LOWERED Adjusting the current position P of the covering material of the motorized window treatment _PRES 。

The motor drive unit 800 may include a rotation sensing circuit 840, e.g., a magnetic sensing circuit, such as a Hall Effect Sensor (HES) circuit, which may be configured to generate two signals V that may be indicative of the rotational position and rotational direction of the motor 810 _S1 、V _S2 (e.g., hall effect sensor signals). The rotation sensing circuit 840 (e.g., HES circuit) may include two internal sensing circuits for generating respective signals V in response to magnets that may be attached to a drive shaft of the motor 810 _S1 、V _S2 (e.g., HES signal). For example, the magnet may be a circular magnet having alternating north and south regions. For example, the magnet may haveTwo opposing north poles and two opposing south poles such that the two north poles and the two south poles pass through each of the rotation sensing circuits 840 during one complete revolution of the drive shaft of the motor 810. Each of the sense circuits of the rotation sense circuit 840 may compare a respective signal V when the sense circuit approaches the north pole of the magnet _S1 、V _S2 To a high state and to a low state when the sense circuit approaches a south pole. The control circuit 830 may be configured to be responsive to the signal V generated by the rotation sensing circuit 840 _S1 、V _S2 To determine that motor 810 is rotating. In addition, the control circuit 830 may be configured to respond to the signal V _S1 、V _S2 To determine the rotational position and rotational direction of the motor 810.

The motor drive unit 800 may include a communication circuit 842 (e.g., such as the control interface printed circuit board 354 shown in fig. 4 and 5) that may allow the control circuit 830 to transmit and receive communication signals, e.g., wired communication signals and/or wireless communication signals, such as Radio Frequency (RF) signals. For example, the motor drive unit 800 may be configured to communicate messages (e.g., digital messages) with external control devices (e.g., other motor drive units) via the communication circuit 842 (e.g., via wireless signals, such as RF signals). The wireless communication circuit 842 may be coupled to the antenna 845 (e.g., the antenna 400 and/or the antenna 500) via a matching network 849 (e.g., the matching network 426 mounted to the coupling printed circuit board 420 and/or the matching network 526 mounted to the coupling printed circuit board 520). The matching network 849 may be configured to optimize the performance of the antenna 845. For example, the matching network 849 may include a filter (e.g., an inductor-capacitor (LC) filter) configured to match the impedance of the antenna 845 to the impedance of the wireless communication circuit 842 to obtain maximum power transfer between the antenna 845 and the communication circuit 842. The communication circuit 842 and/or the antenna 845 may be communicatively coupled (e.g., electrically connected) to the control circuit 830.

The motor drive unit 800 may be in communication with one or more input devices (e.g., such as a remote control device, an occupancy sensor, a daylight sensor, and/or a shade sensor). The remote control, occupancy sensor, daylight sensor, and/or shade sensor may be a wireless control (e.g., an RF transmitter) configured to transmit messages to the motor drive unit 800 via RF signals. For example, the remote control device may be configured to transmit the digital message via the RF signal in response to actuation of one or more buttons of the remote control device. The occupancy sensor may be configured to transmit a message via the RF signal in response to detecting an occupancy and/or a vacant condition of the space in which the motorized window treatment is installed. The daylight sensor may be configured to transmit a digital message via the RF signal responsive to the measured amount of light within the space in which the motorized window treatment is installed. The shade sensor may be configured to transmit a message via the RF signal in response to detecting a glare condition outside of the space in which the motorized window treatment is installed.

The motorized window treatment may be configured to control the covering material according to a clock schedule. The clock schedule may be stored in memory. The clock schedule may be defined by a user (e.g., a system managed by a programming mode). The clock schedule may include a plurality of clock events. The clock event may have an event time and a corresponding command or preset. The motorized window treatments may be configured to track a current time and/or a current date. The motorized window treatments may transmit appropriate commands or presets at the respective event times of each clock event.

The motor drive unit 800 may also include a user interface 844 having one or more actuators (e.g., mechanical switches) that allows a user to provide input to the control circuit 830 during setup and configuration of the motorized window treatment (e.g., in response to actuation of one or more buttons (e.g., control buttons 152 shown in fig. 1). The control circuit 830 may be configured to control the motor 810 to control movement of the covering material in response to shade movement commands received from communication signals received via the communication circuit 842 or user input from buttons of the user interface 844. The control circuit 830 may be configured to enable a user to pair the motorized window treatment with a remote control device and/or other external device (e.g., via the control buttons 152 and/or the user interface 844) to allow wireless communication between the remote control device and/or other external device and the communication circuit 842 (e.g., RF transceiver). The user interface 844 (e.g., control buttons 152) may be configured to provide status indications to a user. For example, the user interface 844 (e.g., control buttons 152) may be configured to flash and/or change color to provide status indications to the user. The status indication may indicate when the motorized window treatment is in a programming mode. The user interface 844 may also include a visual display (e.g., one or more Light Emitting Diodes (LEDs)) that may be illuminated by the control circuit 830 to provide feedback to a user of the motorized window treatment system.

The motor driving unit 800 may include a memory (not shown) configured to store the current position P of the cover material _PRES And/or limit (e.g., fully raised position P _FULLY-RAISED And a fully lowered position P _{FULLY-LOWERED} ) Association information associated with other devices, and/or instructions for controlling the motorized window treatment. The memory may be implemented as an external Integrated Circuit (IC) or as internal circuitry to the control circuit 830.

The motor drive unit 800 may include a compartment 864 (which may be, for example, the battery compartment 211 of the window covering 200 shown in fig. 3) configured to receive DC power. In some examples, the compartment 864 may be located inside the motor drive unit 800. In other examples, the pod 864 may be located external to the motor drive unit 800. In the example shown in fig. 3, the DC power source is one or more batteries 860. Additionally, alternative DC power sources, such as solar cells (e.g., photovoltaic cells), ultrasonic energy sources, and/or Radio Frequency (RF) energy sources, may be coupled in parallel with one or more of the batteries 860, or in some examples, may be used as a substitute for the batteries 860. Alternative DC power sources may be used to perform the same and/or similar functions as the one or more batteries 860. In this example, the compartment 864 may be configured to receive one or more batteries 860 (e.g., four "D" batteries), such as the batteries 260, 360 of fig. 3-5. The battery 860 may provide a battery voltage V to the motor drive unit 800 _BATT 。

The motor drive unit 800 may include a filter circuit 870, a current limiting circuit (such as a power converter circuit 852), and an energy storage element 854 (e.g., an intermediate energy storage element such as an intermediate storage device 694 shown in fig. 8A). In some examples, the motor drive unit 800 may include a second power converter, such as a boost converter circuit 858. Further, in some examples, the second power converter may be omitted from the motor drive circuit 800. The energy storage element 854 may include any combination of one or more supercapacitors, one or more rechargeable batteries, and/or other suitable energy storage devices.

The filter circuit 870 may receive the battery voltage V _BATT . The power converter circuit 852 may draw battery current I from the battery 860 through the filter circuit 870 _BATT . The filter circuit 870 may provide a feedback signal to the battery current I _BATT Filtering the high frequency and/or low frequency components of (c). In some examples, the filter circuit 870 may be a low pass filter. Also, in some examples, the filter circuit 870 may be omitted from the motor drive circuit 800.

The power converter circuit 852 may be configured to limit the current drawn from the battery 860 (e.g., thereby allowing a small constant current to flow from the battery 860). The power converter circuit 852 may receive the battery voltage V via the filter circuit 870 _BATT . In some examples, the power converter circuit 852 may include a buck-type power converter, such as a buck converter. The power converter circuit 852 may be configured to be powered by a battery voltage V _BATT Charging energy storage element 854 to generate a storage voltage V across energy storage element 854 _S (e.g., about 3.5 volts). The motor drive circuit 820 may draw energy from the energy storage element 854 (e.g., via the boost converter circuit 858) to drive the motor 810. Thus, the power converter circuit 852 may be configured to limit the current drawn from the battery 860, for example, by: generating a storage voltage V _S And uses the storage voltage V stored on the energy storage element 854 _S To drive motor 810. In most cases, for example, motor drive circuit 820 may drive motor 810 by drawing current from energy storage element 854 instead of drawing any current directly from battery 860.Furthermore, it should be appreciated that in some examples, for another current limiting circuit, such as at battery voltage V _BATT And storage voltage V _S The power converter circuit 852 may be omitted in the same case where power conversion (e.g., a step-up type or a step-down type) is not required to drive the motor 810.

The motor drive unit 800 may be configured to control when and how the energy storage element 854 is charged by the battery 860. The control circuit 830 may be based on the storage voltage V of the energy storage element 854 _S (such as when the storage voltage V of the energy storage element 854 _S Falling below a low-side threshold (e.g., about 2.8 volts) to control when and how the energy storage element 854 is charged by the battery 860. For example, the control circuit 830 may be configured to receive the scaled storage voltage V via a scaling circuit 856 (e.g., a resistive divider circuit) _SS . The scaling circuit 856 may receive a storage voltage V _S And can generate a scaled storage voltage V _SS . The control circuit 830 may be based on the scaled storage voltage V _SS To determine the storage voltage V of energy storage element 854 _S Is a magnitude of (2). When the control circuit 830 determines the storage voltage V of the energy storage element 854 _S When the magnitude of (a) falls below the low-side threshold, the control circuit 830 may control the charge enable signal V _EN (e.g., charging enable control Signal V _EN Driven high) to enable the power converter circuit 852. When the power converter circuit 852 is enabled, the power converter circuit 852 may be configured to charge the energy storage element 854 (e.g., by the battery 860). When the power converter circuit 852 is disabled, the power converter circuit 852 may be configured to stop charging the energy storage element 854 (e.g., by the battery 860).

The motor drive unit 800 may draw a small constant current from the battery 860 for a longer period of time using the energy storage element 854 to extend the lifetime of the battery 860 (e.g., and increase the total energy output). For example, motor drive unit 800 (e.g., power converter circuit 852 and/or motor drive circuit 820) may limit the current drawn by power converter circuit 852. The motor drive unit 800 may draw less than the limit, but not too much less than the limit, from the battery 860.

When enabled, the power converter circuit 852 may be configured to conduct an average current I from the battery 860 _AVE (e.g., having a magnitude of about 15 milliamps). Average current I _AVE May be much smaller than the magnitude of the drive current required by the motor drive circuit 820 to rotate the motor 810. When the motor 810 is driven by the motor driving circuit 820, the storage voltage V of the energy storage element 854 _S The magnitude of (c) may decrease over time. When the motor drive circuit 820 is not driving the motor 810 and the power converter circuit 852 is charging the energy storage element 854, the voltage V is stored _S May increase (e.g., slowly increase) in magnitude. When the storage voltage V of the energy storage element 854 _S Upon falling below a low-side threshold (e.g., about 2.8V), the control circuit 830 may enable the power converter circuit 852 to begin charging the energy storage element 854. Storing the voltage V after powering the movement of the covering material, powering the low-voltage component and/or due to leakage of current over time _S May fall below the low-end threshold. When the storage voltage V of the energy storage element 854 _S Upon rising above a high-side threshold (e.g., about 3.5 volts), control circuit 830 may stop charging enable signal V _EN Driven high to disable the power converter circuit 852 and stop charging the energy storage element 854 by the battery 860.

The motor drive unit 800 may also include a boost converter circuit 858 that receives the storage voltage V _S And generates a motor voltage V for powering the motor 810 _MOTOR (e.g., about 5 volts). Motor voltage V _MOTOR Can be larger than the storage voltage V _S . In some examples, a switch (e.g., a single pole double throw switch) may connect battery 860 and energy storage element 854 to boost converter 858 (e.g., when a desired motor voltage level exceeds current battery voltage V _BAT In the case of (2). When the control circuit 830 controls the motor drive circuit 820 to rotate the motor 810, the boost converter circuit 858 can conduct current from the energy storage element 854 to generate a motor voltage V _MOTOR . As described above, in someIn an example, the motor drive unit 800 may not include the boost converter circuit 858, for example, based on the voltage requirements of the motor 810.

The motor drive unit 800 may also include a controllable switching circuit 862 coupled between the battery 860 and the motor drive circuit 820. The control circuit 830 may generate a switch control signal V for rendering the controllable switch circuit 862 conductive and non-conductive _SW . The control circuit 830 may be configured to turn on the controllable switch circuit 862 to bypass the filter circuit 870, the power converter circuit 852, the energy storage element 854, and/or the boost converter circuit 858, thereby allowing the motor drive circuit 820 to draw current directly from the battery (e.g., when the energy storage element 854 is depleted). For example, when the control circuit 830 determines (e.g., based on the scaled storage voltage V _SS Magnitude of) of the storage voltage V of the energy storage element 854 _S When the magnitude of (b) is depleted below the threshold and the control circuit 830 has received an input or command to operate the motor 810 and, for example, insufficient energy to complete the movement or amount of movement of the covering material, the control circuit 830 may cause the controllable switch circuit 862 to conduct. For example, the control circuit may control the current storage level (e.g., storage voltage V) of the energy storage element 854 _S ) A comparison is made to a threshold to determine if the energy storage element 854 has sufficient energy to accomplish movement or movement of the covering material. The threshold value may indicate that it is sufficient to complete the covering material from the fully lowered position P _{FULLY-LOWERED} To the fully raised position P _FULLY-RAISED For example, a fixed threshold). The threshold may be constant or may vary, for example, depending on the amount of movement of the cover material required by the received command, such that the threshold (e.g., a variable threshold) may indicate a level of storage sufficient to complete the movement required by the received command.

If the energy storage element 854 is not sufficiently charged (e.g., insufficient energy to move the covering material), the control circuit 830 may close the controllable switching circuit 862 to allow an electrical load (e.g., a motor) to draw current directly from the battery 860. Closing the controllable switch circuit 862 can bypass the energy storage element 854 such that stored energy of the energy storage element 854 is not used to drive the motor 810 to move the covering material.

The control circuit 830 may be configured to determine when one or more of the batteries 860 are not installed in the compartment 864 when in the operational position. For example, the control circuit 830 may be configured to determine when the battery voltage V _BATT When the magnitude of (a) drops to about zero volts (e.g., there is an open circuit between the battery contacts), it is determined that one or more of the batteries 860 are missing. The control circuit 830 may be configured to be responsive to the scaled battery voltage V received via the scaling circuit 866 (e.g., a resistor divider circuit) _BATT-S To determine the battery voltage V _BATT Is a magnitude of (2). Scaling circuit 866 may receive battery voltage V _BATT And can generate a scaled battery voltage V _BATT-S . The control circuit 830 may be configured to be responsive to the scaled battery voltage V _BATT-S While disabling (e.g., automatically disabling) operation of motor 810 of motor drive unit 800 such that the cover material cannot be raised or lowered when one or more of batteries 860 are not installed in battery compartment 864, which may prevent intermediate storage element 854 from being depleted. The control circuit 830 may be configured to respond to the scaled battery voltage V when all the batteries 860 are installed _BATT-S And operation of motor 810 is enabled.

The motor drive unit 800 may include an electric power supply 880 (e.g., a low voltage electric power supply). The power supply 880 may receive the battery voltage V _BATT . The power supply 880 may be configured to generate a low voltage supply voltage V _CC (e.g., about 3.3 volts) for powering low voltage circuits of the motor drive unit 800, such as the user interface 844, the communication circuit 842, and the control circuit 830. Further, in some examples, the power supply 880 may be omitted from the motor drive unit 800 (e.g., where the low voltage circuitry of the motor drive unit 800 can be directly powered by the stored voltage _VS In the case of power supply). Additionally or alternatively, the motor drive unit 800 may include an electric power supply (not shown) that may receive the storage voltage V _S And generate low voltage V _CC (e.g., about 3.3V) for control of the motor drive unit 800Circuitry 830 and other low voltage circuitry (e.g., user interface 844, communication circuitry 842, and control circuitry 830) are powered.

Claims

1. A motorized window treatment, the motorized window treatment comprising:

a coil configured to windingly receive a flexible material and rotate to raise and lower the flexible material;

a motor drive unit received within a cavity of the coil, the motor drive unit comprising:

a motor configured to rotate the coil;

a housing configured to house the motor, the housing including at least one channel formed in a surface of the housing; and

an antenna comprising an electrical conductor; and

at least one mounting bracket configured to support the coil such that the coil is rotatable relative to the at least one mounting bracket;

wherein a gap is defined between the coil and the mounting bracket, and wherein the electrical conductor of the antenna is wound on the housing of the motor drive unit adjacent the gap between the coil and the mounting bracket, wherein the electrical conductor of the antenna is configured to be received within the at least one channel when wound on the housing.

2. The motorized window treatment of claim 1, wherein the motor drive unit includes a wireless communication circuit electrically coupled to the antenna for transmitting and receiving wireless signals.

3. The motorized window treatment of claim 1, wherein the at least one channel comprises at least two peripheral channels extending parallel to each other around a perimeter of the housing in an outer surface of the housing.

4. The motorized window treatment of claim 3, wherein the at least two peripheral channels are joined together at a recess, and the electrical conductor of the antenna is configured to pass from one peripheral channel to another peripheral channel via the recess.

5. The motorized window treatment of claim 1, wherein the at least one channel comprises a single spiral channel.

6. The motorized window treatment of claim 5, wherein the spiral channel is configured such that the antenna moves away from the roller tube in a longitudinal direction when the antenna is wrapped around the housing.

7. The motorized window treatment of claim 2, wherein the motor drive unit comprises a motor drive printed circuit board having a drive circuit mounted thereon for controlling the motor.

8. The motorized window treatment of claim 7, wherein the motor drive unit further comprises a battery compartment for receiving one or more batteries for powering the drive circuitry and the wireless communication circuitry on the motor drive printed circuit board, the housing comprising a cover for covering an end of the battery compartment, the battery compartment being located between the cover and the motor drive printed circuit board.

9. The motorized window treatment of claim 8, wherein the electrical conductor of the antenna is wound around the cover.

10. The motorized window treatment of claim 9, wherein the electrical conductor of the antenna is located within the at least one channel extending around the cover.

11. The motorized window treatment of claim 10, wherein the channel is helical.

12. The motorized window treatment of claim 8, wherein the wireless communication circuit is located inside the cover.

13. The motorized window treatment of claim 8, further comprising a matching network circuit coupled to the motor-driven printed circuit board, wherein the matching network circuit is located inside the cover.

14. The motorized window treatment of claim 12, wherein the wireless communication circuit is coupled to the motor-driven printed circuit board via a ribbon cable.

15. The motorized window treatment of claim 1, wherein the motor drive unit comprises a coupled printed circuit board located adjacent the gap between the roller tube and the mounting bracket and having a matching network circuit mounted thereon, and wherein the antenna is electrically coupled to the mounting network circuit on the coupled printed circuit board.

16. The motorized window treatment of claim 15, wherein the wireless communication circuit is mounted to the motor drive printed circuit board and electrically connected to the matching network circuit on the coupling printed circuit board by a coaxial cable.

17. The motorized window treatment of claim 1, wherein the motor drive unit comprises a flexible printed circuit board, and wherein the antenna is formed on the flexible printed circuit board.

18. The motorized window treatment of claim 1, further comprising a bearing assembly coupled to the roller tube such that the roller tube is configured to rotate about the motor drive unit.

19. The motorized window treatment of claim 18, wherein the bearing assembly is located between the roller tube and the mounting bracket, and wherein the bearing assembly is made of a non-conductive material.

20. The motorized window treatment of claim 19, wherein the antenna is wrapped around the motor drive unit in an area surrounding a perimeter of the motor drive unit and falls within an area defined by the bearing assembly.

21. The motorized window treatment of claim 1, wherein at least a portion of the antenna and the gap between the roller tube and the at least one mounting bracket are aligned.

22. The motorized window treatment of claim 21, wherein the gap between the roller tube and the at least one mounting bracket defines an area comprising a non-conductive component.

23. The motorized window treatment of claim 1, wherein the roller tube is made of a conductive material and the antenna is configured to electromagnetically couple to the roller tube.

24. The motorized window treatment of claim 1, wherein the roller tube and the mounting bracket are each made of an electrically conductive material.

25. The motorized window treatment of claim 1, wherein the housing comprises a body and a cover configured to attach to the body.

26. The motorized window treatment of claim 25, wherein the at least one channel is defined in the body such that the antenna is wrapped around the body.

27. A motorized window treatment, the motorized window treatment comprising:

a motor configured to rotate the coil;

a housing configured to house the motor, the housing comprising a cover configured to cover an end of the motor drive unit, the cover comprising at least one channel extending around the cover; and

an antenna comprising an electrical conductor; and

wherein a gap is defined between the coil and the mounting bracket, and wherein the electrical conductor of the antenna is wrapped around the cover within the at least one channel adjacent the gap between the coil and the mounting bracket.

28. The motorized window treatment of claim 27, wherein the motor drive unit includes a wireless communication circuit electrically coupled to the antenna for transmitting and receiving wireless signals.

29. The motorized window treatment of claim 27, wherein the at least one channel comprises at least two peripheral channels extending parallel to one another about a perimeter of the cover.

30. The motorized window treatment of claim 29, wherein the at least two peripheral channels are joined together at a recess, and the electrical conductor of the antenna is configured to pass from one peripheral channel to the other peripheral channel via the recess.

31. The motorized window treatment of claim 27, wherein the at least one channel comprises a single spiral channel.

32. The motorized window treatment of claim 31, wherein the helical channel is configured such that the antenna moves away from the roller tube in a longitudinal direction when the antenna is wrapped around the housing.

33. The motorized window treatment of claim 27, wherein the motor drive unit comprises a motor drive printed circuit board having a drive circuit mounted thereon for controlling the motor.

34. The motorized window treatment of claim 33, wherein the motor drive unit further comprises a battery compartment for receiving one or more batteries for powering the drive circuitry and the wireless communication circuitry on the motor drive printed circuit board, wherein the cover is configured to cover an end of the battery compartment, the battery compartment being located between the cover and the motor drive printed circuit board.

35. The motorized window treatment of claim 27, wherein at least a portion of the antenna and the gap between the roller tube and the at least one mounting bracket are aligned.

36. The motorized window treatment of claim 27, wherein the gap between the roller tube and the at least one mounting bracket defines an area comprising a non-conductive component.

37. The motorized window treatment of claim 27, wherein the roller tube is made of a conductive material, and the antenna is configured to electromagnetically couple to the roller tube.

38. A motorized window treatment, the motorized window treatment comprising:

a motor drive unit received within the cavity of the coil, the motor drive unit including a motor configured to rotate the coil and a bearing assembly coupled to the coil such that the coil is configured to rotate about the motor drive unit; and

at least one mounting bracket configured to support the bearing assembly of the motor drive unit to allow rotation of the coil relative to the mounting bracket;

Wherein the bearing assembly is located between the coil and the mounting bracket such that a gap is formed between the coil and the mounting bracket, and the motor drive unit includes an antenna including an electrical conductor wound on the motor drive unit adjacent the gap between the coil and the mounting bracket.

39. The motorized window treatment of claim 38, wherein the motor drive unit includes a wireless communication circuit electrically coupled to the antenna for transmitting and receiving wireless signals.

40. The motorized window treatment of claim 39, wherein the motor drive unit comprises a housing configured to house the motor and the wireless communication circuit.

41. The motorized window treatment of claim 40, wherein the motor drive unit comprises at least one channel formed in a surface of the housing, the channel configured to receive the electrical conductor of the antenna.

42. The motorized window treatment of claim 41, wherein the at least one channel comprises at least two peripheral channels extending parallel to one another about a perimeter of the housing in an outer surface of the housing.

43. The motorized window treatment of claim 42, wherein the at least two peripheral channels are joined together at a recess, and the electrical conductor of the antenna is configured to pass from one peripheral channel to another peripheral channel via the recess.

44. The motorized window treatment of claim 41, wherein the at least one channel comprises a single spiral channel.

45. The motorized window treatment of claim 44, wherein the helical channel is configured such that the antenna moves away from the roller tube in a longitudinal direction when the antenna is wrapped around the housing.

46. The motorized window treatment of claim 40, wherein the motor drive unit comprises a motor drive printed circuit board having a drive circuit mounted thereon for controlling the motor.

47. The motorized window treatment of claim 46, wherein the motor drive unit further comprises a battery compartment for receiving one or more batteries for powering the drive circuitry and the wireless communication circuitry on the motor drive printed circuit board, the motor drive unit further comprising a cover for covering an end of the battery compartment, the battery compartment being located between the cover and the motor drive printed circuit board.

48. The motorized window treatment of claim 47, wherein the motor drive unit comprises a coupled printed circuit board positioned adjacent to the cover and having a matching network circuit mounted thereon, and wherein the antenna is electrically coupled to the mounting network circuit on the coupled printed circuit board.

49. The motorized window treatment of claim 48, wherein the wireless communication circuit is mounted to the motor drive printed circuit board and electrically connected to the matching network circuit on the coupling printed circuit board by a coaxial cable.

50. The motorized window treatment of claim 38, wherein the bearing assembly is made of a non-conductive material.

51. The motorized window treatment of claim 50, wherein the antenna is wrapped around the motor drive unit in an area surrounding a perimeter of the motor drive unit and falls within an area defined by the bearing assembly.

52. The motorized window treatment of claim 51, wherein at least a portion of the antenna and a longitudinal gap between the roller tube and the at least one mounting bracket are aligned.

53. The motorized window treatment of claim 52, wherein the longitudinal gap defines an area between the roller tube and the at least one mounting bracket that includes a non-conductive component.

54. The motorized window treatment of claim 38, wherein the roller tube is made of a conductive material, and the antenna is configured to electromagnetically couple to the roller tube.

55. A motorized window treatment, the motorized window treatment comprising:

a coil having a longitudinal axis defining a longitudinal direction, the coil configured to windingly receive a flexible material, the coil configured to rotate to manipulate the flexible material between a raised position and a lowered position;

a motor drive unit received within the cavity of the coil, the motor drive unit including a motor configured to rotate the coil and a bearing assembly coupled to the coil such that the coil is configured to rotate about the motor drive unit;

at least one mounting bracket configured to support the bearing assembly of the motor drive unit to allow rotation of the coil relative to the mounting bracket, wherein the bearing assembly is located within a longitudinal gap extending in the longitudinal direction between the coil and the at least one mounting bracket; and

an antenna electrically coupled to a wireless communication circuit located on a first printed circuit board within the motor drive unit and configured to transmit and receive wireless signals via the antenna, the antenna configured to be helically wound on the motor drive unit proximate the longitudinal gap between the coil and the at least one mounting bracket.

56. The motorized window treatment of claim 55, wherein the antenna comprises an electrical conductor.

57. The motorized window treatment of claim 56, wherein the motor drive unit comprises a housing configured to house the motor and the wireless communication circuit.

58. The motorized window treatment of claim 57, wherein the housing comprises a first housing portion identical to a second housing portion.

59. The motorized window treatment of claim 57, wherein the motor drive unit comprises at least one channel formed in an outer surface of the housing, the channel configured to receive the electrical conductor of the antenna.

60. The motorized window treatment of claim 59, wherein the at least one channel comprises a single spiral channel.

61. The motorized window treatment of claim 60, wherein the helical channel is configured such that the antenna moves away from the roller tube in a longitudinal direction when the antenna is wrapped around the housing.

62. The motorized window treatment of claim 57, wherein the first printed circuit board is configured to be electrically connected to a second printed circuit board within the motor drive unit.

63. The motorized window treatment of claim 62, further comprising a matching network circuit mounted to the second printed circuit board, the matching network circuit configured to match an impedance of the antenna to an impedance of the wireless communication circuit.

64. The motorized window treatment of claim 63, wherein the antenna is electrically coupled to the wireless communication circuit mounted to the first printed circuit board via the second printed circuit board.

65. The motorized window treatment of claim 64, wherein the wireless communication circuit is electrically connected to a matching network circuit on the second printed circuit board via a coaxial cable.

66. The motorized window treatment of claim 55, wherein a drive circuit for controlling the motor is mounted to the first printed circuit board.

67. The motorized window treatment of claim 66, wherein the motor drive unit further comprises a battery compartment for receiving one or more batteries for powering the drive circuitry and the wireless communication circuitry on the motor drive printed circuit board, the motor drive unit further comprising a cover for covering an end of the battery compartment, the battery compartment being located between the cover and the first printed circuit board.

68. The motorized window treatment of claim 55, wherein the bearing assembly is made of a non-conductive material.

69. The motorized window treatment of claim 68, wherein the antenna is wrapped around the motor drive unit in an area surrounding a perimeter of the motor drive unit and falls within an area defined by the bearing assembly.

70. The motorized window treatment of claim 69, wherein at least a portion of the antenna and the longitudinal gap between the roller tube and the at least one mounting bracket are aligned.

71. The motorized window treatment of claim 70, wherein the longitudinal gap defines an area between the roller tube and the at least one mounting bracket that includes a non-conductive component.

72. The motorized window treatment of claim 55, wherein the roller tube is made of a conductive material, and the antenna is configured to be electromagnetically coupled to the roller tube.