An electric window blind

Abstract

This invention discloses an electric curtain, comprising a curtain track; a traction vehicle connected to the curtain track; and a motor drive device for driving the traction vehicle to move along the length of the curtain track. The curtain track is characterized by being composed of at least two segmented tracks joined together, each segmented track containing segmented racks distributed along its length. When two adjacent segmented tracks are joined, the corresponding segmented racks engage synchronously. The traction vehicle is equipped with a traction gear that meshes with the segmented racks. The motor drive device is connected to and drives the traction gear to rotate, thereby driving the traction vehicle to move along the segmented racks. Compared with existing technologies, the advantages of this invention are: the curtain track is composed of segmented tracks joined together, allowing manufacturers to directly mass-produce segmented tracks of different lengths and specifications in a standardized manner. Users can then join these segmented tracks to meet their specific length requirements.

Description

Technical Field

[0001] This invention relates to an electric curtain. Background Technology

[0002] With the continuous improvement of technology, smart homes are increasingly appearing in people's lives and are loved by most modern people. Electric curtains, as one of the representatives of smart homes, have brought many conveniences to people's lives. However, existing tracks for electric curtains require measuring the width and length of the windows inside the room, and then cutting the track according to the measured dimensions (this is a customized product; production can only begin with the actual measured dimensions). If the measurements are inaccurate, the track must be returned to the factory for re-production or undergo secondary cutting and disassembly / reassembly on-site. Furthermore, most existing curtain tracks are made from a single piece. If the track is long, it is inconvenient for users to purchase and transport it in the trunk of a car, or to transport it to residents in high-rise buildings. In addition, ordinary electric curtains operate using belt drive, with motors fixed at both ends of the track. The left and right curtains open and close via a traction frame on the belt. Therefore, only the left and right curtains can open and close simultaneously, not separately. Since the belt cannot be cut, its length is increased, which is also inconvenient for transportation and installation upstairs. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide an electric curtain that is convenient to transport and has a simple transmission method for driving the tractor, in contrast to the above-mentioned prior art.

[0004] The technical solution adopted by the present invention to solve the above-mentioned technical problems is: an electric curtain, comprising...

[0005] Curtain tracks;

[0006] A tractor unit is attached to the curtain track and can move along the length of the curtain track.

[0007] The motor drive unit is used to drive the tractor to move along the length of the curtain track;

[0008] The feature is that: the curtain track is composed of at least two segmented tracks spliced ​​together, and each segmented track has segmented racks distributed along its length inside. When two adjacent segmented tracks are spliced ​​together, the segmented racks in the corresponding two segmented tracks are synchronously engaged; the traction vehicle is equipped with a traction vehicle gear, which meshes with the segmented racks, and the motor drive device is connected to the traction vehicle gear and drives the traction vehicle gear to rotate, thereby driving the traction vehicle to move along the segmented racks.

[0009] The motor drive unit can be self-powered, directly supplying power to the drive motor within the unit via an automatic power supply, thereby independently driving the traction vehicle gears. To avoid frequent power supply replacements for the motor drive unit, the electric curtain provided by this invention also includes a main control box. The motor drive unit can be powered through the main control box, which is directly connected to the mains power. In this case, each segment track has segmented conductive rails distributed along its length. When two adjacent segment tracks are joined, the corresponding segmented conductive rails in the two segment tracks synchronously connect and make conductive contact. After all segment tracks are joined, all segmented conductive rails remain energized and form conductive rails. The motor drive unit is conductively connected to the main control box via the conductive rails.

[0010] Preferably, each segmented conductive rail has a conductive contact at one end and a conductive contact seat at the other end. When two adjacent segments are spliced ​​together, the segmented conductive rails in the corresponding two segments are synchronously connected, and the conductive elastic contact of one segmented conductive rail is inserted into the conductive contact seat of the adjacent segmented conductive rail for close contact, so that the conductive rail composed of all segmented conductive rails remains energized and conductive.

[0011] Preferably, the tractor includes a tractor frame, the tractor gear is mounted on the tractor frame, and the tractor frame is provided with a conductive frame. When the tractor moves on the curtain track, the conductive frame makes conductive contact with any segment of the conductive rail in the curtain track.

[0012] The tractor is also equipped with an elastic element that acts on the conductive frame to drive the conductive frame to fit tightly against the segmented conductive rails. This elastic element is preferably a spring.

[0013] The tractor is also equipped with conductive rollers, which are directly conductively connected to the conductive frame or conductively connected to the conductive frame through a conductive roller bracket. The conductive roller bracket is used to fix the conductive rollers. When the tractor moves on the curtain track, the conductive rollers also roll and make conductive contact with any segment of the conductive rail in the curtain track.

[0014] In order to enable the tractor to slide smoothly and quietly along the curtain track, the tractor frame is also equipped with tractor rollers that roll in contact with the inner wall of the curtain track.

[0015] The motor drive device is detachably connected to the tractor frame. The motor drive device includes a drive motor and a motor output gear connected to the output shaft of the drive motor. After the motor drive device is connected to the tractor frame, the motor output gear meshes with the tractor gear.

[0016] The motor drive device includes a motor drive housing, and a drive motor is fixed inside the motor drive housing. The motor drive housing is also provided with a motor conductive contact that is electrically connected to the drive motor. After the motor drive device is connected to the tractor frame, the motor conductive contact is directly conductively in contact with the conductive frame, or the motor conductive contact is electrically connected to the conductive frame through a conductive adapter.

[0017] The drive housing is provided with a loading and unloading latch and a loading and unloading switch connected to the loading and unloading latch. The corresponding tractor frame is provided with a locking groove. When the motor drive device is connected to the tractor frame, the loading and unloading latch is engaged in the locking groove, so that the motor drive housing is fixedly connected to the tractor frame.

[0018] The drive motor is an external rotor brushless DC motor. The drive motor is connected to the motor output gear through a reduction clutch. The drive housing also contains a motor drive control board. The drive motor and the motor conductive contacts are electrically connected to the motor drive control board.

[0019] A fabric hanging rod is connected to the motor drive device or the traction frame.

[0020] The main control box is connected to the end of the curtain track via a fixed base; the main control box contains a main control circuit, which is electrically connected to the conductive rail inside the curtain track via a conductive contact spring.

[0021] Compared with the prior art, the advantages of this invention are as follows: the curtain track is composed of segmented tracks spliced ​​together, so the manufacturer does not need to produce curtain tracks according to the actual measured size of the user's home. Instead, it can directly mass-produce segmented tracks of different lengths and specifications in a standardized manner. Users can splice the segmented tracks of different lengths and specifications to meet the actual length and size requirements. In addition, the transmission method of the traction vehicle through the meshing of the traction vehicle gear with the segmented racks in the curtain track facilitates the segmentation of the curtain track. The transmission method is simple and convenient, and it can also realize multiple opening methods such as opening and closing the left and right curtains separately, opening and closing one side, opening only one side, closing only one side, and opening and closing only one side. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the electric curtain in an embodiment of the present invention.

[0023] Figure 2 This is a front view of the electric curtain in an embodiment of the present invention.

[0024] Figure 3 This is a schematic diagram of the internal connection structure between the host control box and the curtain track in an embodiment of the present invention.

[0025] Figure 4 This is a schematic diagram of the connection structure between the main control circuit hidden in the main control box and the curtain track in an embodiment of the present invention.

[0026] Figure 5 This is an exploded view of the connection structure between the host control box and the curtain track in an embodiment of the present invention.

[0027] Figure 6 This is a plan view of the connection structure between the main control box and the curtain track in an embodiment of the present invention (the state after the movable hanging lugs of the main control box are moved outward).

[0028] Figure 7 This is a three-dimensional structural diagram of the electric curtain in an embodiment of the present invention (with the curtain track housing hidden).

[0029] Figure 8 This is a cross-sectional view of the segmented track in an embodiment of the present invention.

[0030] Figure 9 This is a three-dimensional structural diagram of the segmented track in an embodiment of the present invention.

[0031] Figure 10 This is a three-dimensional structural diagram of the segmented track from another perspective in an embodiment of the present invention.

[0032] Figure 11 This is a three-dimensional structural diagram of the two segmented tracks in preparation for splicing in an embodiment of the present invention.

[0033] Figure 12 This is a three-dimensional structural diagram of the splicing component in an embodiment of the present invention.

[0034] Figure 13 This is a schematic diagram of the three-dimensional structure after splicing two segmented tracks in an embodiment of the present invention.

[0035] Figure 14 This diagram illustrates the connection relationship between the segmented racks and segmented conductive rails when preparing to splice two segmented tracks in an embodiment of the present invention.

[0036] Figure 15 This is a schematic diagram of the internal structure of two segmented tracks in preparation for splicing in an embodiment of the present invention.

[0037] Figure 16 This is a diagram showing the connection relationship between the tractor and motor drive device and the curtain track in an embodiment of the present invention.

[0038] Figure 17 This is a diagram showing the connection relationship between the traction vehicle and the curtain track when the motor drive device and the traction vehicle are separated in an embodiment of the present invention.

[0039] Figure 18 This is a three-dimensional structural diagram of the tractor vehicle in an embodiment of the present invention.

[0040] Figure 19 This is a schematic diagram of the internal structure of the motor drive device in an embodiment of the present invention.

[0041] Figure 20 This is a cross-sectional view of the tractor and motor drive device connected to the curtain track in an embodiment of the present invention.

[0042] Figure 21 This is a diagram showing the internal connection structure of the tractor and motor drive device after they are connected to the curtain track in an embodiment of the present invention.

[0043] Figure 22 This is a diagram showing the connection structure between the tractor and the motor drive device and the segmented conductive rail in an embodiment of the present invention.

[0044] Figure 23 This is a diagram showing the conductive connection structure between the motor drive device, the traction vehicle, and the segmented conductive rail in an embodiment of the present invention.

[0045] Figure 24 This is a diagram showing the connection structure between the tailstock and the segmented track in an embodiment of the present invention. Detailed Implementation

[0046] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0047] like Figure 1 , 2 The electric curtain includes a main control box 1, a curtain track 2, a traction trolley 3, a motor drive unit 4, a tail frame 5, and fabric hanging rings 6. The main control box 1 is fixed to one end of the curtain track 2, and the tail frame 5 is fixed to the other end of the curtain track 2. The traction trolley 3 is connected to the curtain track 2 and can move along the length of the curtain track; the motor drive unit 4 is connected to the traction trolley 3 and drives the traction trolley to move along the length of the curtain track; the fabric hanging rings 6 are movably connected to the curtain track 2.

[0048] In this embodiment, one end of the curtain track 2 is connected to a fixing seat 7, see [reference]. Figure 3 , 4 As shown in Figure 5, the main control box 1 is connected to one end of the curtain track 2 via the fixing base 7. A conductive contact spring 71 is connected to the fixing base 7, and the conductive contact spring 71 is electrically connected to the conductive rail inside the curtain track 2 via a conductive contact piece 73. The main control box 1 contains a main control circuit 11 and a conductive connecting piece 12. When the main control box 1 is connected to the fixing base 7, the conductive connecting piece 12 makes conductive contact with the conductive contact spring 71. A main control fixing base buckle 72 is connected to the fixing base 7. After the main control box 1 is connected to the fixing base 7, the main control fixing base buckle 72 engages with the inner edge of the main control box 1, thus fixing the main control box 1 to the fixing base 7. The main control box 1 is also connected to a movable hanging lug 13, which can move along the length of the curtain track 2 on the main control box 1. (See Figure 5). Figure 6 As shown.

[0049] The curtain track 2 is composed of at least two segmented tracks 21 joined together. The segmented tracks 21 may have the same length or different lengths. In this embodiment, the curtain track 2 is composed of four segmented tracks of different lengths joined together, see [link to documentation]. Figure 7 As shown. In actual production, various segmented tracks 21 of different lengths and specifications can be produced, making it convenient for users to assemble curtain tracks of any length.

[0050] Each segment track 21 may have a different length, but its external shape and internal structure are completely identical. Specifically, each segment track 21 uses a long strip profile, and the internal structure of the long strip profile is completely identical along its length. This long strip profile includes a top plate 211, two side plates 212 and 213, and two bottom plates 214 and 215, all of which have the same length. See also... Figure 8 As shown. The tops of the two side plates 212 and 213 are respectively connected to the two sides of the top plate 211, and the bottoms of the two side plates 212 and 213 are respectively connected to the two bottom plates 214 and 215. There is a gap 21a between the two bottom plates 214 and 215. The two bottom plates 214 and 215, the two side plates 212 and 213 and the top plate 211 form a track groove 21b. The tractor 3 and the fabric hanging ring 6 are movably arranged in the track groove 21b. The tractor 3 and the fabric hanging ring 6 can pass through the gap 21a and can move along the length of the gap 21a. Each of the two base plates 214 and 215 is equipped with a locking plate 216 and 217 near the two side plates 212 and 213. The lengths of the two locking plates 216 and 217 are the same as the lengths of the top plate 211, the two side plates 212 and 213, and the two base plates 214 and 215. Connecting plate slots 21c are formed between the two locking plates 216 and 217 and the two side plates 212 and 213. Therefore, the connecting plate slots 21c are distributed along the length of the entire segmented track 21. Each segmented track 21 can be spliced ​​together using a splicing piece 8. The width of the connecting plate slot 21c is slightly larger than the thickness of the splicing piece 8, so that the two connecting ends of the splicing piece 8 fit tightly together. Specifically, each segmented track 21 includes a first end 2a and a second end 2b. When two adjacent segmented tracks are spliced, the first and second ends are connected by two splicing pieces 8. That is, the splicing pieces 8 are disposed between the first ends 2a and the second ends 2b of two adjacent segmented tracks 21. The first end 2a of each segmented track 21 has a first positioning hole 218 on the inner wall of the connecting piece slot 21c, and the second end of each segmented track 21 has a second positioning hole 219 on the inner wall of the connecting piece slot 21c. See [link to documentation]. Figure 9 , 10As shown. In some other embodiments, the lengths of the two locking plates 216 and 217 can be shorter, requiring only that connecting piece slots 21c be formed in the two ends of the segmented track 21. That is, only a first connecting piece slot that facilitates the insertion of the splicing piece 8 needs to be formed on both side walls of the first end of the segmented track 21, and a second connecting piece slot that facilitates the insertion of the splicing piece 8 needs to be formed on both side walls of the second end of the segmented track 21. The first connecting piece slot and the second connecting piece slot do not need to be continuous.

[0051] The splicing component 8 is a rigid connecting piece with a certain thickness, including a first connecting end 81 and a second connecting end 82, see [link / reference]. Figure 12As shown, the first connecting end 82 is provided with a first elastic protrusion 83. The second connecting end 82 of the splicing piece 8 is fixed to the inner wall of the second end 2b of the segmented track 21. The first connecting end 81 of the splicing piece 8 is inserted into the connecting piece slot 21c inside the first end 2a of another adjacent segmented track 21, and the first elastic protrusion 83 on the first connecting end 81 of the splicing piece 8 is engaged in the first positioning hole 218 and is rigidly and elastically positioned with the first positioning hole 218. The second connecting end 82 is provided with a second elastic protrusion 84. The second connecting end 82 of the splicing piece 8 is inserted into the connecting piece slot 21c inside the second end 2b of another adjacent segmented track 21, and the second elastic protrusion 84 on the second connecting end 82 of the splicing piece 8 is engaged in the second positioning hole 219 and is rigidly and elastically positioned with the second positioning hole 219. The first connecting end 81 has a generally U-shaped first slot 85, the opening of which faces the end of the first connecting end 81. An elastic post 86 is formed in the middle of the first connecting end 81 within the first slot 85, and the first elastic protrusion 83 is located on this elastic post 86. The first connecting end 81 also has a second slot 87, the opening direction of which is opposite to that of the first slot 85. The opening of the first slot 85 and at least a portion of its body are located inside the second slot 87. A U-shaped elastic sheet 88 is formed between the second slot 87 and the first slot 85, and the elastic post 86 is connected to the U-shaped elastic sheet 88. The elastic post 86 is generally strip-shaped. The second elastic protrusion 84 has the same structure as the first elastic protrusion 83 and is symmetrically arranged. The first elastic protrusion 83 has an inclined surface facing the outer side of the end of the first connecting end 81 to facilitate the insertion of the splicing component 8. The second elastic protrusion 84 is hemispherical. During production, the second end 82 of the splicing component 8 can be directly fixed into the connecting piece slot 21c inside the second end 2b of the segmented track 21, so that the second elastic protrusion 84 on the second connecting end 82 of the splicing component 8 engages in the second positioning hole 219, thereby directly and fixedly connecting the second connecting end 82 of the splicing component 8 to the second end 2b of the segmented track 21. When splicing two segmented tracks 21, it is only necessary to insert the first end of the splicing component 8 into the connecting piece slot 21c inside the first end 2a of the other segmented track 21, so that the first elastic protrusion 83 on the splicing component 8 engages in the first positioning hole 218. See [link to relevant documentation] Figure 11 As shown.

[0052] In this embodiment, each segmented track 21 is provided with segmented conductive rails 22 distributed along its length. When two adjacent segmented tracks 21 are spliced ​​together, the segmented conductive rails 22 in the corresponding two segmented tracks are synchronously connected and make conductive contact. After all segmented tracks 21 are spliced ​​together, all segmented conductive rails 22 are kept energized and formed a conductive rail. One end of each segmented conductive rail 22 is provided with a conductive contact 221, and the other end of each segmented conductive rail is provided with a conductive contact seat 222. When two adjacent segmented tracks 21 are spliced ​​together, the segmented conductive rails 22 in the corresponding two segmented tracks 21 are synchronously connected, and the conductive elastic contact 221 of one segmented conductive rail 22 is inserted into the conductive contact seat 222 of the adjacent segmented conductive rail 22 for close contact, so that the conductive rail composed of all segmented conductive rails is kept energized and conductive. In addition, each segmented track 21 is equipped with segmented racks 23 distributed along its length. When two adjacent segmented tracks 21 are spliced, the segmented racks 23 in the corresponding two segmented tracks 21 are synchronously engaged; see also Figure 13 , 14 As shown in Figure 15.

[0053] The tractor 3 includes a tractor frame 31, on which a tractor gear 32 is mounted, and a conductive frame 33 is also mounted. When the tractor 3 moves on the curtain track 2, the tractor gear 32 meshes with any segmented rack 23 in the curtain track, and the conductive frame 33 makes conductive contact with any segmented conductive rail 22 in the curtain track. (See attached text) Figure 16 , 17 As shown in Figures 18, 20, and 21. The traction frame 31 is also equipped with an elastic element 34 acting on the conductive frame 33 to drive the conductive frame 33 to tightly contact the segmented conductive rails 22. The traction frame 31 is also equipped with four conductive rollers 35, arranged in pairs, for a total of two sets. Each set of conductive rollers 35 is connected by a conductive roller bracket 36, which is electrically connected to the conductive frame 33. When the traction vehicle 3 moves on the curtain track 2, the four conductive rollers 35 also roll and make conductive contact with any one of the segmented conductive rails 22 in the curtain track. The traction frame 31 is also equipped with four traction rollers 37 that roll in contact with the inner wall of the curtain track, arranged in pairs, for a total of two sets. Each set of traction rollers 37 rolls in contact with two base plates 214 and 215 in the curtain track, respectively.

[0054] The motor drive unit 4 is detachably connected to the tractor frame 31. See below. Figure 17 , 19As shown, the motor drive device includes a motor drive housing 41, within which a drive motor 42 is housed, and a motor output gear 43 is connected to the output shaft of the drive motor. After the motor drive device 4 is connected to the traction frame 31, the motor output gear 43 meshes with the traction gear 32. The motor drive housing 41 also contains a motor conductive contact 44 electrically connected to the drive motor. After the motor drive device 4 is connected to the traction frame 31, the motor conductive contact 44 makes conductive contact with the conductive roller bracket 36, thereby energizing the motor conductive contact 44 through the conductive roller bracket 36 and the conductive frame 33. (See [reference]). Figure 22 , 23 As shown. The motor drive housing 41 is equipped with a loading / unloading latch 45 and a loading / unloading switch 46 connected to the loading / unloading latch. The corresponding tractor frame 31 is equipped with a locking groove 38. When the motor drive device 4 is connected to the tractor frame 21, the loading / unloading latch 45 is engaged in the locking groove 38, thus fixing the motor drive housing to the tractor frame. Driving the loading / unloading switch 46 allows the loading / unloading latch 45 to disengage from the locking groove 38, facilitating the disassembly of the motor drive device 4 from the tractor. The drive motor 42 is an external rotor brushless DC motor. The drive motor is connected to the motor output gear 43 through a reduction clutch. The drive housing also contains a motor drive control board 47, and the drive motor 42 and the motor conductive contacts 44 are electrically connected to the motor drive control board 47. In addition, a fabric hanging rod 48 is connected to the motor drive housing 41. After the motor drive unit 4 is connected to the traction frame 31, the main control circuit 11 in the main control box 1 is electrically connected to the motor drive control board 47 through the conductive connecting piece 12, the conductive contact spring piece 71, the conductive rail in the curtain track 2, the conductive frame 33 in the traction vehicle, the conductive roller bracket 36, and the motor conductive contact 44. The main control circuit 11 in the main control box 1 can supply power to the motor drive control board 47, and then supply power to the drive motor 42 and control the working state of the drive motor 42 through the motor drive control board 47. When the drive motor 42 rotates, the motor output gear 43 rotates, which in turn drives the traction vehicle gear 32 to rotate, causing the traction vehicle gear 32 to move along the segmented rack 23 in the curtain track 2, thereby causing the traction vehicle 3 and the motor drive unit 4 to move together along the track groove 21b of the curtain track 2, so that the traction vehicle 3 and the motor drive unit 4 move together along the length direction of the curtain track 2.

[0055] The number of tractor 3 and motor drive unit 4 can be set according to actual needs. If the user needs the curtain to open only once, only one tractor 3 and motor drive unit 4 need to be set; if the user needs the curtain to open twice, two tractor 3 and motor drive unit 4 can be set.

[0056] In this embodiment, the tail bracket 5 is fixed to the other end of the curtain track 2, away from the main control box 1. The tail bracket 5 can move slightly relative to the curtain track 2 to flexibly change the overall length of the entire electric curtain. The tail bracket 5 is provided with a movable tail bracket lug 51, which can move along the length extension direction of the curtain track 2 on the tail bracket 5. See [reference needed]. Figure 24 As shown.

Claims

1. An electric curtain, comprising Curtain tracks; A tractor unit is attached to the curtain track and can move along the length of the curtain track. The motor drive unit is used to drive the tractor to move along the length of the curtain track; characterized in that The curtain track is composed of at least two segmented tracks spliced ​​together. Each segmented track has segmented racks distributed along its length. When two adjacent segmented tracks are spliced ​​together, the segmented racks in the corresponding two segmented tracks are synchronously engaged. The traction vehicle is equipped with a traction vehicle gear, which meshes with the segmented racks. The motor drive device is connected to the traction vehicle gear and drives the traction vehicle gear to rotate, thereby driving the traction vehicle to move along the segmented racks. It also includes a main control box. Each segment track has segmented conductive rails distributed along its length. When two adjacent segment tracks are spliced ​​together, the segmented conductive rails in the corresponding two segment tracks are synchronously connected and make conductive contact. After all segment tracks are spliced ​​together, all segmented conductive rails are kept energized and formed conductive rails. The motor drive device is conductively connected to the main control box through the conductive rails. Each segment of the conductive rail has a conductive contact at one end and a conductive contact seat at the other end. When two adjacent segments are spliced ​​together, the conductive rails in the corresponding two segments are connected synchronously, and the conductive elastic contact of one segment of the conductive rail is inserted into the conductive contact seat of the adjacent segment of the conductive rail for close contact, so that the conductive rail composed of all segments remains energized and conductive. The traction vehicle includes a traction vehicle frame, the traction vehicle gear is mounted on the traction vehicle frame, and the traction vehicle frame is provided with a conductive frame. When the traction vehicle moves on the curtain track, the conductive frame makes conductive contact with any segment of the conductive rail in the curtain track. The motor drive device is detachably connected to the tractor frame. The motor drive device includes a drive motor and a motor output gear connected to the output shaft of the drive motor. After the motor drive device is connected to the tractor frame, the motor output gear meshes with the tractor gear. The motor drive device includes a motor drive housing, and a drive motor is fixed inside the motor drive housing. The motor drive housing is also provided with a motor conductive contact that is electrically connected to the drive motor. After the motor drive device is connected to the traction frame, the motor conductive contact is directly conductively in contact with the conductive frame, or the motor conductive contact is electrically connected to the conductive frame through a conductive adapter. The tractor is also equipped with an elastic component that acts on the conductive frame to drive the conductive frame to fit tightly against the segmented conductive rails. The tractor is also equipped with conductive rollers, which are directly conductively connected to the conductive frame or conductively connected to the conductive frame through a conductive roller bracket. The conductive roller bracket is used to fix the conductive rollers. When the tractor moves on the curtain track, the conductive rollers also roll and make conductive contact with any segment of the conductive rail in the curtain track. The traction frame is also equipped with traction rollers that roll in contact with the inner wall of the curtain track; The main control box is connected to the end of the curtain track via a fixed base; the main control box contains a main control circuit, which is electrically connected to the conductive rail inside the curtain track via a conductive contact spring.

2. The motorized window treatment of claim 1, wherein: The drive housing is provided with a loading and unloading latch and a loading and unloading switch connected to the loading and unloading latch. The corresponding tractor frame is provided with a locking groove. When the motor drive device is connected to the tractor frame, the loading and unloading latch is engaged in the locking groove, so that the motor drive housing is fixedly connected to the tractor frame.

3. The motorized window treatment of claim 2, wherein: The drive motor is an external rotor brushless DC motor. The drive motor is connected to the motor output gear through a reduction clutch. The drive housing also contains a motor drive control board. The drive motor and the motor conductive contacts are electrically connected to the motor drive control board.

4. The motorized window treatment of claim 1, wherein: A fabric hanging rod is connected to the motor drive device or the traction frame.

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