Electric curtain

Abstract

The utility model relates to an electric curtain which comprises a rail device, a curtain body, a curtain body and a curtain body. The driving device is arranged at one end of the guide rail; the two ends of the traction rope are connected to the driving device and wound around the end, away from the driving device, of the guide rail to form a first traction part and a second traction part which are oppositely arranged, and the driving device can drive the traction rope to move; the fixing device is fixed to the first traction part and / or the second traction part and connected to the sliding mechanism, and the driving device can drive the traction rope to drive the fixing device to move so that the electric curtain can be opened or closed. Thus, the electric curtain has the electric mode, electric opening or electric closing of the electric curtain is achieved, and the requirement for intelligent control is met. Meanwhile, according to the electric curtain, an original manual curtain does not need to be dismantled, integrated installation can be conducted through a guide rail and a sliding mechanism of an existing manual curtain, and the complexity and cost of the installation process are reduced.

Description

Technical Field

[0001] This application relates to the field of smart home technology, and in particular to an electric curtain. Background Technology

[0002] Generally, curtains can be controlled manually or electrically. Manual curtains require users to pull the curtains to open or close them. Manual curtains are cumbersome to operate, increasing the amount of user work, and they cannot be remotely controlled according to actual weather conditions.

[0003] Electric curtains are a representative product of smart homes and have become an important part of the smart home control system, bringing a smart experience to families. They can be controlled to open and close via remote control or smart control terminal.

[0004] Currently, common electric curtains are generally a complete set of devices, which includes a drive unit, a transmission component, and a curtain. The drive unit drives the transmission component to move, and the transmission component then drives the curtain to move, thereby realizing the closing and opening of the curtain.

[0005] However, for users who have already installed manual curtains, if they need to replace them with motorized curtains, they need to remove the existing manual curtain structure and reinstall the motorized curtains. This process is cumbersome and costly, making it difficult to promote and use. Utility Model Content

[0006] Therefore, it is necessary to address the problems of complex operation and high cost caused by the need to remove the original manual curtains when installing electric curtains. An electric curtain that can be opened or closed electrically without removing the original manual curtains should be provided, reducing the complexity of the installation process and lowering costs.

[0007] An electric curtain includes:

[0008] A track device, including a guide rail and a sliding mechanism, wherein the sliding mechanism is slidably disposed on the guide rail;

[0009] The driving device is located at one end of the guide rail;

[0010] A traction rope, with its two ends connected to the drive device, and wrapped around the guide rail at the end away from the drive device, forms a first traction part and a second traction part arranged opposite to each other, and the drive device can drive the traction rope to move.

[0011] A fixing device is fixed to the first traction part and / or the second traction part and connected to the sliding mechanism. The driving device can drive the traction rope to move the fixing device so that the electric curtain can be opened or closed.

[0012] In one embodiment of this application, the track device further includes a first support mechanism and a second support mechanism, which are respectively disposed at both ends of the guide rail. The first support mechanism is connected to the drive device, and the second support mechanism is capable of being wound with the traction rope.

[0013] The first support mechanism includes a first support base, a first support component, and a second support component. The first support base is disposed on the top of the driving device, and the first support component and the second support component are connected to the first support base and the guide rail.

[0014] In one embodiment of this application, the first support assembly includes a first support body, a fastener, a first annular member, and a support plate. The first support body is disposed at the end and both sides of the guide rail, the support plate is snapped into the guide rail, the fastener passes through the first support body and is connected to the support plate, and the first annular member is disposed at the end of the fastener facing the first support base and is movably connected to the first support base.

[0015] And / or, the second support assembly includes a roller, a second support body, and a second annular member. One end of the second support body is connected to the roller, and the other end is rotatably mounted with the second annular member. The second annular member is movably connected to the first support base. The roller is located in the guide rail and can slide along the guide rail.

[0016] In one embodiment of this application, the first support base has a recessed first groove, the first support assembly further includes a first fixing shaft, a first annular member is located in the first groove, the first fixing shaft passes through the first annular member and is installed on the first support base;

[0017] And / or, the first support base has a recessed second groove, the second support assembly further includes a second fixing shaft, a second annular member is located in the second groove, the second fixing shaft passes through the second annular member and is mounted on the first support base;

[0018] And / or, the side wall of the first support base has a first fixing groove, the top of the driving device has a first fixing protrusion and a third groove, the first fixing protrusion is disposed on the side wall of the third groove, and the first support base is partially disposed in the third groove, so that the first fixing protrusion can be snapped into the first fixing groove.

[0019] The first fixing groove includes a first guide groove and a first mounting groove. The first guide groove is connected to the first mounting groove. The connection between the first guide groove and the first mounting groove has a first limiting part. The first fixing protrusion can enter the first mounting groove along the first guide groove and be locked by the first limiting part.

[0020] In one embodiment of this application, the second support mechanism includes an installation component, a guide wheel, a second support base, a third support assembly, and a fourth support assembly. The third support assembly and the fourth support assembly connect the second support base to the guide rail. The installation component is installed on the second support base. The guide wheel is rotatably disposed on the installation component and around which the traction rope is wound.

[0021] The side wall of the second support base has a second fixing groove, and the inner wall of the mounting component has a second fixing protrusion, which can be snapped into the second fixing groove.

[0022] The second fixing groove includes a second guide groove and a second mounting groove. The second guide groove is connected to the second mounting groove. The connection between the second guide groove and the second mounting groove has a second limiting part. The second fixing protrusion can enter the second mounting groove along the second guide groove and be locked by the second limiting part.

[0023] In one embodiment of this application, the fixing device includes a fixing base and a fixing body. The fixing base has a receiving cavity, through which the traction rope can extend. The fixing body is installed in the receiving cavity and presses the traction rope against the fixing base.

[0024] Wherein, the fixing seat has a first fixing tooth facing the fixing body, and / or the fixing body has a second fixing tooth facing the fixing seat, and the first fixing tooth and / or the second fixing tooth abuts against the traction rope;

[0025] And / or, the fixing device further includes a first fixing member, the fixing base has a through first fixing hole, the fixing body has a through second fixing hole, the fixing body is installed on the fixing base, the first fixing hole and the second fixing hole are coaxially arranged, the first fixing member is installed in the first fixing hole and the second fixing hole, and is connected to the sliding mechanism.

[0026] In one embodiment of this application, the sliding mechanism includes a sliding wheel, a sliding body, and a third annular component. One end of the sliding body is connected to the sliding wheel, and the other end is rotatably mounted with the third annular component. The third annular component is movably connected to the fixing device. The sliding wheel is located in the guide rail and can slide along the guide rail.

[0027] In one embodiment of this application, the driving device includes a winding mechanism and a driving mechanism. The winding mechanism includes a first winding wheel and a second winding wheel, which are used to wind the two ends of the traction rope.

[0028] The drive mechanism includes a support housing and a drive component, a first output component, and a second output component rotatably connected to the support housing. The first output component is coaxially connected to the first winding wheel and drives the first winding wheel to rotate to wind or release the traction rope. The second output component is coaxially arranged with the second winding wheel and drives the second winding wheel to rotate to wind or release the traction rope.

[0029] In one embodiment of this application, the electric curtain further includes a pre-tensioning device, which includes a support housing, a third winding wheel, and a pre-tensioning elastic element;

[0030] The support housing is connected to one end of the traction rope, the third winding wheel is rotatably disposed in the support housing and wound around the other end of the traction rope, the pre-tightening elastic element is disposed in the support housing and connected to the third winding wheel, and the pre-tightening elastic element can apply a pre-tightening force to the third winding wheel;

[0031] The preload applied by the preload elastic element enables the third winding wheel to move synchronously with the traction rope when the electric curtain is in electric mode. The preload applied by the preload elastic element can also drive the third winding wheel to rotate when the electric curtain is in manual mode, so that the third winding wheel winds the traction rope.

[0032] In one embodiment of this application, the traction rope includes a first traction rope and a second traction rope. One end of the first traction rope is connected to the third winding wheel, and the other end of the first traction rope passes around the guide wheel of the track device and is wound and connected to the first winding wheel of the drive device.

[0033] One end of the second traction rope is wound around the first winding wheel of the drive device, and the other end of the second traction rope is connected to the pre-tensioned elastic element.

[0034] By adopting the above technical solution, this application has at least the following technical effects:

[0035] The electric curtain of this application has a drive unit located at one end of a guide rail, and two ends of a pull rope connected to the drive unit. The pull rope can wrap around the other end of the guide rail, allowing a first pull part and a second pull part to extend along the length of the guide rail. At least two fixing devices are respectively located at the first pull part and the second pull part. When the drive unit drives the pull rope, the pull rope can drive at least two sets of fixing devices to move synchronously, thereby enabling the fixing devices to drive a sliding mechanism to move along the guide rail. Simultaneously, at least two fixing devices can move closer to or further away from each other.

[0036] This motorized curtain features a drive unit mounted on a track system, connected to at least two fixed devices via a traction rope. Each fixed device is also connected to at least one sliding mechanism. Thus, the drive unit, via the traction rope, can move the at least two fixed devices closer together or further apart, enabling the motorized curtain to open or close electrically, meeting the needs of intelligent control. Furthermore, this motorized curtain eliminates the need to remove existing manual curtains; it can be integrated using the existing tracks and sliding mechanisms of manual curtains, reducing installation complexity and costs. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of an electric curtain according to an embodiment of this application from one perspective.

[0038] Figure 2 for Figure 1 The diagram shown is a schematic of the motorized curtains from another perspective.

[0039] Figure 3 for Figure 1 The diagram shown is an exploded view of the motorized blinds.

[0040] Figure 4 for Figure 3 The diagram shows the traction rope in an electric curtain.

[0041] Figure 5 for Figure 1 A partial schematic diagram of the first support mechanism and its cooperation with the guide rail in the electric curtain shown.

[0042] Figure 6 for Figure 5 An exploded view of the first support mechanism is shown.

[0043] Figure 7 for Figure 5 The diagram shows the first support component connected to the guide rail.

[0044] Figure 8 for Figure 6 A schematic diagram of the first support component in the first support mechanism shown.

[0045] Figure 9 for Figure 8 The top view of the first support component shown.

[0046] Figure 10 for Figure 9 The first support component shown is a cross-sectional view along the AA direction.

[0047] Figure 11 for Figure 9 The first support component shown is a cross-sectional view along the BB direction.

[0048] Figure 12 for Figure 6 A schematic diagram of the second support component in the first support mechanism shown.

[0049] Figure 13 for Figure 5 A schematic diagram of the first support base in the first support mechanism shown.

[0050] Figure 14 for Figure 3 An exploded view of the drive mechanism in the electric curtain shown.

[0051] Figure 15 for Figure 3 A schematic diagram of the second support mechanism in the electric curtain shown.

[0052] Figure 16 for Figure 3 A schematic diagram of the fixing device in the electric curtain shown.

[0053] Figure 17 for Figure 16 An exploded view of the fixing device shown.

[0054] Figure 18 for Figure 16 A top view of the fixing device shown.

[0055] Figure 19 for Figure 18 The shown is a cross-sectional view of the fixing device along the CC direction.

[0056] Figure 20 for Figure 3 The diagram shows a sliding mechanism in an electric curtain.

[0057] Figure 21 for Figure 3 The diagram shows a pretensioning device in an electric blind.

[0058] Figure 22 for Figure 21 A top view of the pre-tightening device shown.

[0059] Figure 23 for Figure 22 The pre-tightening device shown is a cross-sectional view along the DD direction.

[0060] Wherein: 10, electric curtain; 100, track device; 110, guide rail; 111, first end; 112, second end; 120, sliding mechanism; 121, sliding wheel; 122, sliding body; 123, third annular component; 130, first support mechanism; 131, first support base; 1311, first groove; 1312, second groove; 1313, first fixing groove; 13131, first guide groove; 13132, first mounting groove; 13133, first limiting part; 132, first support assembly; 1321, first support... Support body; 13211, main body plate; 13212, first side plate; 13213, second side plate; 13214, third side plate; 13215, bending part; 1322, fastener; 1323, first annular component; 1324, support plate; 133, second support assembly; 1331, roller; 1332, second support body; 1333, second annular component; 140, second support mechanism; 141, mounting component; 1411, second fixing protrusion; 142, guide wheel; 143, second support base; 1431, second fixing... 14311, Second guide groove; 14312, Second mounting groove; 14313, Second limiting part; 144, Third support assembly; 145, Fourth support assembly; 200, Drive device; 201, First fixed protrusion; 202, Third groove; 210, Winding mechanism; 211, First winding wheel; 212, Second winding wheel; 220, Drive mechanism; 221, Support housing; 222, Drive assembly; 223, First output assembly; 224, Second output assembly; 230, Mounting housing; 300, Traction rope; 31 0. First traction unit; 320. Second traction unit; 330. First traction rope; 340. Second traction rope; 400. Fixing device; 410. Fixing base; 411. Receiving cavity; 412. First fixing tooth; 413. First fixing hole; 420. Fixing body; 421. Second fixing tooth; 422. Second fixing hole; 423. Fourth groove; 430. First fixing member; 500. Pre-tightening device; 510. Support shell; 511. Fifth groove; 520. Third winding wheel; 530. Pre-tightening elastic member; 540. Second fixing member. Detailed Implementation

[0061] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0062] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0063] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0064] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0065] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact, or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0066] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0067] Understandably, motorized curtains are a representative product of smart homes. Currently, common motorized curtains are generally a complete system, including a drive unit, a transmission component, and the curtain itself. The drive unit moves the transmission component, which in turn moves the curtain, thus opening and closing it. However, for users who have already installed manual curtains, replacing them with motorized curtains requires dismantling the existing manual curtain structure and reinstalling the motorized curtains. This process is cumbersome and costly, hindering its widespread adoption.

[0068] For this purpose, please refer to Figures 1 to 3 This application provides an electric curtain 10. Figure 1 This is a schematic diagram of an electric curtain 10 according to an embodiment of this application from one perspective. Figure 2 for Figure 1 The diagram shown is a schematic representation of the motorized curtain 10 from another perspective. Figure 3 for Figure 1 The diagram shows an exploded view of the electric curtain 10. A curtain body (not shown) is mounted on the electric curtain 10, which drives the curtain body to move, thus electrically opening and closing the curtain. The electric curtain 10 of this application can be electrically opened and closed, meeting the requirements of intelligent control. Furthermore, the electric curtain 10 can be installed on existing manual curtains without removing them, reducing the complexity of the installation process and lowering costs.

[0069] See Figures 1 to 4In one embodiment, the electric curtain 10 includes a track device 100, a drive device 200, a traction rope 300, and a fixing device 400. The track device 100 includes a guide rail 110 and a sliding mechanism 120, the sliding mechanism 120 being slidably disposed on the guide rail 110. The drive device 200 is disposed at one end of the guide rail 110. The traction rope 300, with both ends connected to the drive device 200, wraps around the end of the guide rail 110 away from the drive device 200, forming a first traction portion 310 and a second traction portion 320 arranged opposite to each other, the drive device 200 being able to drive the traction rope 300 to move. The fixing device 400 is fixed to the first traction portion 310 and / or the second traction portion 320, and connected to the sliding mechanism 120, the drive device 200 being able to drive the traction rope 300 to move the fixing device 400, thereby opening or closing the electric curtain 10. Figure 4 for Figure 3 A schematic diagram of the traction rope 300 in the electric curtain 10 shown.

[0070] The track device 100 serves as the mounting base for the electric curtain 10 and is mounted on the wall. The drive device 200 is the power source for the electric curtain 10 and is located at one end of the track device 100. The pull rope 300 is the transmission component of the electric curtain 10. One end of the pull rope 300 is connected to the drive device 200, and the other end of the pull rope 300 slidably passes around the end of the track device 100 away from the drive device 200 and is connected to the drive device 200. The fixing device 400 is fixedly mounted on the pull rope 300 and connected to the curtain body. When the electric curtain 10 is in use, the drive device 200 winds around one end of the pull rope 300 and releases the other end of the pull rope 300 to drive the pull rope 300 to move relative to the track device 100. The pull rope 300 then pulls the fixing device 400 on it, causing the curtain body to move, thus opening or closing the curtain body and achieving the electric opening or closing of the electric curtain 10.

[0071] When installing the motorized curtain 10, if no manual curtain is installed on the wall, the track device 100 can be directly installed on the wall, followed by the drive device 200, the pull rope 300, and the fixing device 400. If a manual curtain is already installed on the wall, the curtain track of the manual curtain can be used as the track device 100 of this application. In this case, the drive device 200 is directly installed on the track device 100 (i.e., the curtain track of the manual curtain, which will not be described further below), followed by the pull rope 300 and the fixing device 400.

[0072] Thus, the electric curtain 10 of this application has a wide range of applications. In addition to being used as a complete set, the electric curtain 10 can also be adapted to users who have already installed manual curtains without removing the original manual curtains, reducing the complexity of installing the electric curtain 10. At the same time, it can also reduce the installation cost of the electric curtain 10, making it easier to promote and use the electric curtain 10.

[0073] Specifically, the track device 100 includes a guide rail 110 and a sliding mechanism 120, the guide rail 110 being along its length direction ( Figure 1 Extending in the left-right direction, the guide rail 110 has a first end 111 and a second end 112 along its length. The guide rail 110 is mounted on the wall, and the sliding mechanism 120 is slidably disposed in the guide rail 110. The sliding mechanism 120 is connected to the fixing device 400. The driving device 200 is disposed at the first end 111 of the guide rail 110. One end of the traction rope 300 is wrapped around the driving device 200, and the other end passes around the second end 112 of the guide rail 110 and is wrapped around the driving device 200.

[0074] This application defines the traction rope 300 as a first traction part 310 and a second traction part 320 according to the layout of the traction rope 300, such as Figures 1 to 4 As shown, one end of the traction rope 300 forms a first traction portion 310 with the second end 112 of the guide rail 110, and the other end of the traction rope 300 forms a second traction portion 320 with the second end 112 of the guide rail 110. The first traction portion 310 and the second traction portion 320 are arranged opposite to each other, and the first traction portion 310 and the second traction portion 320 cause the traction rope 300 to have a folded-back structure. Optionally, the first traction portion 310 and the second traction portion 320 are arranged parallel to each other. The fixing device 400 can be fixed to the first traction portion 310, the second traction portion 320, or both the first traction portion 310 and the second traction portion 320.

[0075] In one embodiment of this application, the number of curtain bodies is one, that is, the electric curtain 10 is a single-opening structure. In this case, the curtain body is set on the fixing device 400, the fixing device 400 is set on the first traction part 310 or the second traction part 320, and the driving device 200 can drive the traction rope 300 to move the fixing device 400, so that the fixing device 400 moves the curtain body, thereby realizing the opening or closing of the electric curtain 10.

[0076] In another embodiment of this application, the number of curtain bodies is two, that is, the electric curtain 10 has a double-opening structure. In this case, the electric curtain 10 includes two fixing devices 400, which are respectively disposed on the first traction part 310 and the second traction part 320. Each fixing device 400 is connected to a curtain body. The driving device 200 can drive the traction rope 300 to move the two fixing devices 400 in opposite directions. Thus, the two fixing devices 400 can drive the two curtain bodies to move closer to each other or further away from each other, thereby realizing the opening or closing of the electric curtain 10. Of course, the electric curtain 10 may also include a fixing device 400 and a pre-tensioning device 500 (mentioned later). The fixing device 400 and the pre-tensioning device 500 are respectively disposed in the first traction part 310 and the second traction part 320. The two curtain bodies are respectively disposed in the fixing device 400 and the pre-tensioning device 500. The driving device 200 can drive the traction rope 300 to move the fixing device 400 and the pre-tensioning device 500 in opposite directions. Thus, the fixing device 400 and the pre-tensioning device 500 drive the two curtain bodies to move closer to each other or further away from each other, thereby realizing the opening or closing of the electric curtain 10.

[0077] It is worth noting that when the number of curtain bodies is one or two, the structure and working principle of the electric curtain 10 are essentially the same. When describing the structure of the electric curtain 10 later, the number of curtain bodies will not be limited. It will only be stated that the traction rope 300 drives the curtain body to move and controls the electric curtain 10 to open or close, and the curtain body to open or close.

[0078] When the drive device 200 drives the traction rope 300 to move, the guide rail 110 guides the movement of the fixing device 400. Specifically, the drive device 200 drives one end of the traction rope 300 to wrap around the other end and release it, thereby driving the traction rope 300 to move. When the traction rope 300 moves, it can pull the fixing device 400 to move, causing the curtain body to open or close. At the same time, when the fixing device 400 moves, it can also drive the sliding mechanism 120 to slide along the guide rail 110. At this time, the guide rail 110 can guide and limit the sliding mechanism 120, thereby limiting the fixing device 400 and ensuring that the curtain body opens or closes accurately.

[0079] The driving device 200 in the above embodiment is mounted on the guide rail 110 of the track device 100 and connected to at least two fixing devices 400 via a traction rope 300. Each fixing device 400 is also connected to at least one sliding mechanism 120. Thus, the driving device 200 can drive at least two fixing devices 400 to move closer or further apart via the traction rope 300, enabling the electric curtain 10 to have an electric mode, allowing it to be opened or closed electrically, meeting the needs of intelligent control. Simultaneously, the electric curtain 10 does not require the removal of the existing manual curtain; it can be integrated using the existing guide rail 110 and sliding mechanism 120 of the manual curtain, reducing the complexity of the installation process and lowering costs.

[0080] See Figures 1 to 3 In one embodiment, the track device 100 further includes a first support mechanism 130 and a second support mechanism 140, which are respectively disposed at both ends of the guide rail 110. The first support mechanism 130 is connected to the drive device 200, and the second support mechanism 140 is capable of being wound with a traction rope 300. The first support mechanism 130 is disposed at the first end 111 of the guide rail 110, and the second support mechanism 140 is disposed at the second end 112 of the guide rail 110. The first support mechanism 130 is capable of connecting to the drive device 200 to fix the drive device 200 to the guide rail 110. The second support mechanism 140 provides space for the installation and movement of the traction rope 300, facilitating the formation of a first traction portion 310 and a second traction portion 320 on the guide rail 110 by the traction rope 300. Furthermore, the traction rope 300 is capable of moving along the second support mechanism 140.

[0081] See Figure 3 , Figure 5 and Figure 6 In one embodiment, the first support mechanism 130 includes a first support base 131, a first support component 132, and a second support component 133. The first support base 131 is disposed on the top of the drive device 200, and the first support component 132 and the second support component 133 are connected to the first support base 131 and the guide rail 110. Figure 5 for Figure 1 A partial schematic diagram of the first support mechanism 130 cooperating with the guide rail 110 in the electric curtain 10 shown. Figure 6 for Figure 5 An exploded view of the first support mechanism 130 shown.

[0082] The first support base 131 serves as the base for mounting the first support mechanism 130. The first support base 131 is positioned on top of the drive device 200. The first support assembly 132 is positioned at the first end 111 of the guide rail 110. The second support assembly 133 is positioned close to the first support assembly 132 and is installed within the guide rail 110. The first support assembly 132 and the second support assembly 133 are connected to the first support base 131 to fix the drive device 200 to the first end 111 of the guide rail 110. The first support assembly 132 and the second support assembly 133 can be movably connected to the first support base 131 or fixedly connected to it, as long as the installation of the drive device 200 is achieved.

[0083] See Figures 5 to 11 In one embodiment, the first support assembly 132 includes a first support body 1321, a fastener 1322, a first annular member 1323, and a support plate 1324. The first support body 1321 is disposed at the end and both sides of the guide rail 110, the support plate 1324 is engaged in the guide rail 110, the fastener 1322 passes through the first support body 1321 and is connected to the support plate 1324, and the first annular member 1323 is disposed at one end of the fastener 1322 facing the first support base 131, and the first annular member 1323 is movably connected to the first support base 131. Figure 7 for Figure 5 The diagram shown illustrates the first support component 132 connected to the guide rail 110. Figure 8 for Figure 6 A schematic diagram of the first support component 132 in the first support mechanism 130 shown. Figure 9 for Figure 8 The top view of the first support component 132 shown. Figure 10 for Figure 9 The first support assembly 132 shown is a cross-sectional view along the AA direction. Figure 11 for Figure 9 The first support component 132 shown is a cross-sectional view along the BB direction.

[0084] The first support body 1321 is disposed at the first end 111 of the guide rail 110 and is located below the guide rail 110. The first support body 1321 abuts against the end face of the first end 111 of the guide rail 110 and also abuts against the opposite side of the guide rail 110. In this way, the first support body 1321 can be clamped at the first end 111 of the guide rail 110, realizing the initial installation of the first support body 1321. Moreover, the support plate 1324 is snapped and fixed into the guide rail 110, that is, the support plate 1324 cannot move relative to the guide rail 110, and the fastener 1322 can pass through the first support body 1321 and be installed into the support plate 1324. In this way, the first support body 1321, the support plate 1324, and the fastener 1322 can be fixed to one end of the guide rail 110.

[0085] The first annular member 1323 is disposed at the end of the fastener 1322 that protrudes from the first support body 1321, and the first annular member 1323 can be connected to the first support base 131. Optionally, the fastener 1322 is a bolt. Optionally, the first annular member 1323 is a connecting ring. It can be understood that in a manual curtain, the first annular member 1323 can be connected to the curtain body. In this case, the first annular member 1323 is directly connected to the first support base 131 so that the drive device 200 can be installed on the guide rail 110.

[0086] See Figures 7 to 11 In one embodiment, the first support body 1321 includes a main plate 13211, a first side plate 13212, a second side plate 13213, and a third side plate 13214. The first side plate 13212, the second side plate 13213, and the third side plate 13214 are disposed on three sides of the main plate 13211. The second side plate 13213 and the third side plate 13214 are disposed opposite to each other. The first side plate 13212 can abut against the end face of the first end 111 of the guide rail 110, and the second side plate 13213 and the third side plate 13214 can abut against the opposite sides of the guide rail 110. In this way, the first support body 1321 can be clamped and fixed to the first end 111 of the guide rail 110 by the first side plate 13212, the second side plate 13213, and the third side plate 13214.

[0087] Optionally, the main body plate 13211, the first side plate 13212, the second side plate 13213, and the third side plate 13214 are integrally formed. This improves the structural strength of the first support body 1321, allowing it to be reliably installed onto the first end 111 of the guide rail 110. Optionally, the first support body 1321 further includes a bent portion 13215, disposed between the main body plate 13211 and the first side plate 13212. The bent portion 13215 allows the first side plate 13212 to extend towards the guide rail 110. This increases the force exerted by the first side plate 13212 against the guide rail 110, ensuring the first support body 1321 is reliably installed onto the first section of the guide rail 110.

[0088] See Figure 5 , Figure 6 and Figure 12 In one embodiment, the second support assembly 133 includes a roller 1331, a second support body 1332, and a second annular member 1333. One end of the second support body 1332 is connected to the roller 1331, and the other end is rotatably mounted with the second annular member 1333. The second annular member 1333 is movably connected to the first support base 131. The roller 1331 is located in the guide rail 110 and can slide along the guide rail 110. Figure 12 for Figure 6 The diagram shows a schematic of the second support component 133 in the first support mechanism 130. The second support body 1332 serves as the connecting body for the second support component 133. A roller 1331 is positioned above the second support body 1332, and a second annular member 1333 is positioned below it. The second annular member 1333 connects to the first support base 131. The second support body 1332 slides along the guide rail 110 via the roller 1331 to adjust the second support component 133 to the desired position, facilitating its connection to the first support base 131. This ensures the first support base 131 is reliably fixed to the first end 111 of the guide rail 110, thereby reliably fixing the drive device 200 to the guide rail 110. Optionally, the second annular member 1333 may be a connecting ring.

[0089] See Figure 5 , Figure 6 and Figure 13 In one embodiment, the first support base 131 has a recessed first groove 1311, the first support assembly 132 further includes a first fixed shaft (not shown), a first annular member 1323 is located in the first groove 1311, the first fixed shaft passes through the first annular member 1323 and is installed on the first support base 131. Figure 13 for Figure 5The diagram shows a first support base 131 in the first support mechanism 130. The top of the first support base 131 has a recessed first groove 1311. When the first support assembly 132 is assembled with the first support base 131, the first annular member 1323 of the first support assembly 132 is located in the first groove 1311, and a first fixing shaft passes through the first support base 131 and the first annular member 1323. At this time, the first fixing shaft can movably connect the first annular member 1323 to the first support base 131, thereby achieving the connection between the first support assembly 132 and the first support base 131. Optionally, the first fixing shaft is a pin.

[0090] See Figure 5 , Figure 6 and Figure 13 In one embodiment, the first support base 131 has a recessed second groove 1312, and the second support assembly 133 further includes a second fixed shaft (not shown). A second annular member 1333 is located in the second groove 1312, and the second fixed shaft passes through the second annular member 1333 and is mounted on the first support base 131. The top of the first support base 131 has a recessed second groove 1312. When the second support assembly 133 is assembled with the first support base 131, the second annular member 1333 of the second support assembly 133 is located in the second groove 1312, and the second fixed shaft passes through the first support base 131 and the second annular member 1333. At this time, the second fixed shaft can movably connect the second annular member 1333 to the first support base 131 to realize the connection between the second support assembly 133 and the first support base 131. Optionally, the second fixed shaft is a pin.

[0091] See Figure 3 , Figure 5 , Figure 6 , Figure 13 and Figure 14 In one embodiment, the side wall of the first support base 131 has a first fixing groove 1313, and the top of the driving device 200 has a first fixing protrusion 201 and a third groove 202. The first fixing protrusion 201 is disposed on the side wall of the third groove 202, and the first support base 131 is partially installed in the third groove 202 so that the first fixing protrusion 201 can be locked in the first fixing groove 1313. Figure 14 for Figure 3 The diagram shows an exploded view of the drive unit 200 in the electric curtain 10. The top of the drive unit 200 has a recessed third groove 202, and a first fixing protrusion 201 protrudes from the side wall of the third groove 202.

[0092] After the first support base 131 is installed into the third groove 202, the first fixing protrusion 201 corresponds to the first fixing groove 1313 on the side of the first support base 131, and thus the first fixing protrusion 201 can be engaged in the first fixing groove 1313. In this way, by engaging the first fixing protrusion 201 in the first fixing groove 1313, the drive device 200 can be fixed to the first support base 131, and then to the first end 111 of the guide rail 110. Optionally, the first fixing protrusion 201 is a protrusion, and its shape is not limited in principle, as long as it can cooperate with the first fixing groove 1313 to realize the assembly of the first support base 131 and the drive device 200.

[0093] In one embodiment, the number of first fixing slots 1313 is at least two, and the at least two first fixing slots 1313 are symmetrically arranged on opposite sides of the first support base 131. The number of first fixing protrusions 201 is equal to the number of first fixing slots 1313 and is correspondingly arranged. In this way, the first support base 131 can be connected to the corresponding first fixing protrusions 201 on both sides through the first fixing slots 1313, realizing a reliable connection between the first support base 131 and the driving device 200. In this embodiment, the number of both first fixing slots 1313 and first fixing protrusions 201 is two, and the two first fixing slots 1313 are respectively arranged on opposite sides of the first support base 131. Of course, in other embodiments of this application, the number of first fixing slots 1313 and first fixing protrusions 201 may also be other.

[0094] See Figure 5 , Figure 6 and Figure 13 In one embodiment, the first fixing groove 1313 includes a first guide groove 13131 and a first mounting groove 13132. The first guide groove 13131 communicates with the first mounting groove 13132. A first limiting portion 13133 is provided at the connection between the first guide groove 13131 and the first mounting groove 13132. The first fixing protrusion 201 can enter the first mounting groove 13132 along the first guide groove 13131 and be limited by the first limiting portion 13133. The first guide groove 13131 is an open groove, and the first mounting groove 13132 is a fixing groove. The first mounting groove 13132 communicates with the first guide groove 13131, and the first limiting portion 13133 protrudes between the first guide groove 13131 and the first mounting groove 13132.

[0095] When the first support base 131 is assembled with the drive device 200, the first fixing protrusion 201 can move into the first guide groove 13131 and slide along the first guide groove 13131 into the first mounting groove 13132. Subsequently, the drive device 200 is released, and under gravity, it can be installed into the first mounting groove 13132 and contact the first limiting part 13133. At this time, the first limiting part 13133 can limit the first fixing protrusion 201 within the first mounting groove 13132, thereby fixing the drive device 200 to the first support base 131. It is worth noting that the shapes of the first guide groove 13131 and the first mounting groove 13132 are not limited in principle, as long as they can mate with the first fixing protrusion 201. Optionally, the first limiting part 13133 is a protrusion.

[0096] In one embodiment, the drive device 200 includes a mounting housing 230, in which each component of the drive device 200 is disposed, and the mounting housing 230 protects each component of the drive device 200. A third groove 202 and a first fixing protrusion 201 are disposed in the mounting housing 230.

[0097] See Figure 3 and Figure 15 In one embodiment, the second support mechanism 140 includes a mounting component 141, a guide wheel 142, a second support base 143, a third support assembly 144, and a fourth support assembly 145. The third support assembly 144 and the fourth support assembly 145 connect the second support base 143 to the guide rail 110. The mounting component 141 is mounted on the second support base 143, and the guide wheel 142 is rotatably disposed on the mounting component 141 and wound with a traction rope 300. Figure 15 for Figure 3 The diagram shows the second support mechanism 140 in the electric curtain 10. The second support base 143 is the base for installing the second support mechanism 140, and the second support base 143 is disposed at the second end 112 of the guide rail 110.

[0098] The second support base 143 is mounted to the second end 112 of the guide rail 110 via the third support assembly 144 and the fourth support assembly 145. It is worth noting that the third support assembly 144 has the same structure as the first support assembly 132 in the first support mechanism 130, and the fourth support assembly 145 has the same structure as the second support assembly 133 in the first support mechanism 130. The structures of the third support assembly 144 and the fourth support assembly 145 will not be described further. Furthermore, the connection method between the third support assembly 144 and the fourth support assembly 145 and the second support base 143 is the same as the connection method between the first support assembly 132 and the second support assembly 133 and the first support base 131, and will not be described further below.

[0099] The second support base 143 is partially installed in the mounting component 141. A guide wheel 142 is rotatably mounted on the end of the mounting component 141 facing the drive device 200, allowing the traction rope 300 to pass over the guide wheel 142. Thus, when the drive device 200 drives the traction rope 300, the traction rope 300 can move along the guide wheel 142, which guides the traction rope 300, preventing it from jamming and ensuring smooth opening and closing of the electric curtain 10. This application uses the second support base 143 to support the mounting component 141, enabling the mounting component 141 to support the guide wheel 142, which in turn guides the traction rope 300. Optionally, the guide wheel 142 can be a roller or other wheel that provides a guiding function.

[0100] See Figure 3 and Figure 15 In one embodiment, the sidewall of the second support base 143 has a second fixing groove 1431, and the inner wall of the mounting component 141 has a second fixing protrusion 1411, which can be engaged and installed in the second fixing groove 1431. The mounting component 141 has a hollow structure, the second support base 143 is partially installed in the mounting component 141, and the second fixing protrusion 1411 is disposed on the inner sidewall of the mounting component 141.

[0101] The second support base 143 is partially installed into the mounting component 141. The second fixing protrusion 1411 corresponds to the second fixing groove 1431 on the side of the second support base 143, and thus the second fixing protrusion 1411 can be engaged in the second fixing groove 1431. In this way, by engaging the second fixing protrusion 1411 in the second fixing groove 1431, the mounting component 141 can be fixed to the second support base 143, and then fixed to the second end 112 of the guide rail 110. Optionally, the second fixing protrusion 1411 is a protrusion, and its shape is not limited in principle, as long as it can cooperate with the second fixing groove 1431 to realize the assembly of the second support base 143 and the mounting component 141.

[0102] In one embodiment, the number of second fixing slots 1431 is at least two, and the at least two second fixing slots 1431 are symmetrically arranged on opposite sides of the second support base 143. The number of second fixing protrusions 1411 is equal to the number of second fixing slots 1431 and is correspondingly arranged. In this way, the second support base 143 can be connected to the corresponding second fixing protrusions 1411 on both sides through the second fixing slots 1431, realizing a reliable connection between the second support base 143 and the mounting component 141. In this embodiment, the number of both second fixing slots 1431 and second fixing protrusions 1411 is two, and the two second fixing slots 1431 are respectively arranged on opposite sides of the second support base 143. Of course, in other embodiments of this application, the number of second fixing slots 1431 and second fixing protrusions 1411 may also be other.

[0103] See Figure 3 and Figure 15 In one embodiment, the second fixing groove 1431 includes a second guide groove 14311 and a second mounting groove 14312. The second guide groove 14311 communicates with the second mounting groove 14312. A second limiting portion 14313 is provided at the connection between the second guide groove 14311 and the second mounting groove 14312. The second fixing protrusion 1411 can enter the second mounting groove 14312 along the second guide groove 14311 and be limited by the second limiting portion 14313. The second guide groove 14311 is an open groove, and the second mounting groove 14312 is a fixing groove. The second mounting groove 14312 communicates with the second guide groove 14311, and the second limiting portion 14313 protrudes between the second guide groove 14311 and the second mounting groove 14312.

[0104] When the second support base 143 is assembled with the mounting component 141, the second fixing protrusion 1411 can move into the second guide groove 14311 and slide along the second guide groove 14311 into the second mounting groove 14312. Subsequently, the mounting component 141 is released, and under gravity, it can be installed into the second mounting groove 14312 and contact the second limiting part 14313. At this time, the second limiting part 14313 can limit the second fixing protrusion 1411 within the second mounting groove 14312 to fix the mounting component 141 to the second support base 143. It is worth noting that the shapes of the second guide groove 14311 and the second mounting groove 14312 are not limited in principle, as long as they can mate with the second fixing protrusion 1411. Optionally, the second limiting part 14313 is a protrusion.

[0105] See Figures 1 to 3 , Figure 14In one embodiment, the drive device 200 includes a winding mechanism 210 and a drive mechanism 220 disposed on the mounting housing 230. The winding mechanism 210 includes a first winding wheel 211 and a second winding wheel 212, which are used to wind the two ends of the traction rope 300. The drive mechanism 220 includes a support housing 221 and a drive assembly 222, a first output assembly 223, and a second output assembly 224 rotatably connected to the support housing 221. The first output assembly 223 is coaxially connected to the first winding wheel 211 and drives the first winding wheel 211 to rotate to wind or release the traction rope 300. The second output assembly 224 is coaxially disposed with the second winding wheel 212 and drives the second winding wheel 212 to rotate to wind or release the traction rope 300.

[0106] In the winding mechanism 210, the first winding wheel 211 and the second winding wheel 212 are components for winding the traction rope 300 of the electric curtain 10. One end of the traction rope 300 is wound around the first winding wheel 211, and the other end is wound around the second winding wheel 212. The drive mechanism 220 can drive the first winding wheel 211 or the second winding wheel 212 to rotate. In this way, the first winding wheel 211 and the second winding wheel 212 can rotate synchronously. One of the first winding wheel 211 and the second winding wheel 212 winds the traction rope 300, while the other releases the traction rope 300, so that the traction rope 300 moves. In turn, the traction rope 300 can drive the curtain body to move, realizing the electric opening or electric closing of the electric curtain 10.

[0107] Specifically, the drive assembly 222 is the power source for the drive mechanism 220, and the first output assembly 223 and the second output assembly 224 are components that output rotational motion. The drive assembly 222, the first output assembly 223, and the second output assembly 224 are rotatably mounted on the support housing 221, which provides rotational support for them. Simultaneously, the first output assembly 223 is coaxially connected to the first winding wheel 211. When the first output assembly 223 rotates, it drives the first winding wheel 211 to rotate synchronously, so that the first winding wheel 211 winds the traction rope 300. The second output assembly 224 is coaxially connected to the second winding wheel 212. When the second output assembly 224 rotates, it drives the second winding wheel 212 to rotate synchronously, so that the second winding wheel 212 winds the traction rope 300.

[0108] The drive assembly 222 can selectively engage or disengage with the first output assembly 223 and the second output assembly 224 to drive or stop the rotation of either the first output assembly 223 or the second output assembly 224. When the drive assembly 222 is engaged with the first output assembly 223, the drive assembly 222 is disengaged from the second output assembly 224. At this time, the drive assembly 222 can drive the first output assembly 223 to rotate. The first output assembly 223 drives the first winding wheel 211 to rotate, so that the first winding wheel 211 winds the traction rope 300. When the first winding wheel 211 winds the traction rope 300, it can generate a pulling force on the traction rope 300, and this pulling force can pull the second winding wheel 212 to rotate, so that the second winding wheel 212 releases the traction rope 300.

[0109] When the drive assembly 222 is engaged with the second output assembly 224, the drive assembly 222 is separated from the first output assembly 223. At this time, the drive assembly 222 can drive the second output assembly 224 to rotate. The second output assembly 224 drives the second winding wheel 212 to rotate, so that the second winding wheel 212 winds the traction rope 300. When the second winding wheel 212 winds the traction rope 300, it can generate a pulling force on the traction rope 300, and this pulling force can pull the first winding wheel 211 to rotate, so that the first winding wheel 211 releases the traction rope 300. When the drive assembly 222 is separated from both the first output assembly 223 and the second output assembly 224, both the first output assembly 223 and the second output assembly 224 are in a stationary state.

[0110] When the electric curtain 10 is opened electrically, the drive assembly 222 and the second output assembly 224 are driven to rotate counterclockwise. The second output assembly 224 drives the second winding wheel 212 to rotate counterclockwise. The second winding wheel 212 retracts the traction rope 300 (wraps the traction rope 300). At the same time, the second winding wheel 212 pulls the first winding wheel 211 to rotate counterclockwise through the traction rope 300, so that the first winding wheel 211 releases the traction rope 300. At this time, the traction rope 300 can drive the curtain body to move, so that the curtain body opens, realizing the electric opening of the electric curtain 10.

[0111] When the electric curtain 10 is electrically closed, the drive assembly 222 and the first output assembly 223 are in transmission cooperation. The first output assembly 223 drives the first winding wheel 211 to rotate clockwise, and the first winding wheel 211 winds the traction rope 300. At the same time, the first winding wheel 211 pulls the second winding wheel 212 to rotate clockwise through the traction rope 300, so that the second winding wheel 212 releases the traction rope 300. At this time, the traction rope 300 can drive the curtain body to move, so that the curtain body closes, realizing the electric closing of the electric curtain 10. Of course, the drive assembly 222 can also drive the first winding wheel 211 to rotate to realize the electric closing of the electric curtain 10, and drive the second winding wheel 212 to rotate to realize the electric opening of the electric curtain 10. The principle is essentially the same as above, and will not be repeated hereafter.

[0112] When the electric curtain 10 is in its initial state, the drive component 222 is centered and separated from the first output component 223 and the second output component 224. At this time, the first output component 223 and the second output component 224 can rotate freely. When the drive component 222 cooperates with the first output component 223 or the second output component 224, the electric curtain 10 is in an electric state, enabling the electric opening or closing of the electric curtain 10.

[0113] Furthermore, the electric curtain 10 can also be in manual mode. In its initial state, the user can pull the curtain body to move the pull rope 300 towards or away from the drive unit 200. This allows one of the first winding wheel 211 or the second winding wheel 212 to release the pull rope 300, while the other winds the pull rope 300, thus enabling manual opening and closing of the curtain. In this way, even if the drive assembly 222 is powered off or malfunctioning, the user can freely open or close the electric curtain 10.

[0114] Optionally, the drive assembly 222 is a combination of a drive motor and a reduction gear. Optionally, the first output assembly 223 includes a first output gear and a first output shaft, the first output shaft being coaxially connected to the first winding wheel 211. When the drive assembly 222 drives the first output gear to rotate, the first output gear can drive the first winding wheel 211 to rotate synchronously via the first output shaft. Optionally, the second output assembly 224 includes a second output gear and a second output shaft, the second output shaft being coaxially connected to the second winding wheel 212. When the drive assembly 222 drives the second output gear to rotate, the second output gear can drive the second winding wheel 212 to rotate synchronously via the second output shaft.

[0115] It is worth noting that the focus of this application is on the cooperation between the drive device 200 and the track device 100, the fixing device 400, etc. The above only describes the possible forms of the first output component 223, the second output component 224 and the drive component 222. Other components in the drive device 200 will not be described in this application.

[0116] See Figures 1 to 3 , Figures 16 to 19 In one embodiment, the fixing device 400 includes a fixing base 410 and a fixing body 420. The fixing base 410 has a receiving cavity 411 through which the traction rope 300 can extend. The fixing body 420 is installed in the receiving cavity 411 and presses the traction rope 300 against the fixing base 410. Figure 16 for Figure 3 A schematic diagram of the fixing device 400 in the electric curtain 10 shown. Figure 17 for Figure 16 An exploded view of the fixing device 400 shown. Figure 18 for Figure 16 The top view of the fixing device 400 shown. Figure 19 for Figure 18 The shown is a cross-sectional view of the fixing device 400 along the CC direction.

[0117] The fixing base 410 is the main component of the fixing device 400. The fixing base 410 has a recessed receiving cavity 411. The fixing body 420 is an assembly component of the fixing device 400 and can be installed into the receiving cavity 411 of the fixing base 410. When the fixing device 400 is fixedly connected to the traction rope 300, part of the traction rope 300 is installed into the receiving cavity 411, and the remaining traction rope 300 protrudes from the fixing base 410. Then, the fixing body 420 is installed into the receiving cavity 411 of the fixing base 410. At this time, the fixing body 420 can press against the traction rope 300 in the fixing base 410. In this way, the fixing base 410 and the fixing body 420 can be fixedly installed to the traction rope 300 by clamping. When the traction rope 300 moves, the traction rope 300 can drive the fixing device 400 to move synchronously.

[0118] See Figure 17 and Figure 19In one embodiment, the fixing seat 410 has a first fixing tooth 412 facing the fixing body 420, and / or the fixing body 420 has a second fixing tooth 421 facing the fixing seat 410. The first fixing tooth 412 and / or the second fixing tooth 421 abut against the traction rope 300. In this embodiment, the fixing seat 410 has a first fixing tooth 412, and the bottom of the fixing body 420 has a second fixing tooth 421. After the traction rope 300 is installed between the fixing seat 410 and the fixing body 420, the fixing seat 410 engages the traction rope 300 through the first fixing tooth 412, and the fixing body 420 engages the traction rope 300 through the second fixing tooth 421. In this way, the traction rope 300 can be reliably fixed between the fixing seat 410 and the fixing body 420, so that the traction rope 300 can move synchronously with the fixing device 400.

[0119] Optionally, the first fixing tooth 412 and the second fixing tooth 421 are rack and pinion structures. Of course, the first fixing tooth 412 and the second fixing tooth 421 can also be fixing protrusions or snap-fit ​​structures, as long as the traction rope 300 can be fixed. Of course, in other embodiments of this application, the first fixing tooth 412 can be provided only in the fixing seat 410, or the second fixing tooth 421 can be provided only at the bottom of the fixing body 420.

[0120] See Figures 16 to 19 In one embodiment, the fixing device 400 further includes a first fixing member 430, the fixing base 410 has a through first fixing hole 413, the fixing body 420 has a through second fixing hole 422, after the fixing body 420 is installed on the fixing base 410, the first fixing hole 413 and the second fixing hole 422 are coaxially arranged, the first fixing member 430 is installed in the first fixing hole 413 and the second fixing hole 422, and is connected to the sliding mechanism 120.

[0121] The first fixing member 430 is a component for fixing the fixing base 410 and the fixing body 420. The first fixing member 430 can be installed in the first fixing hole 413 and the second fixing hole 422 to fix the fixing body 420 into the fixing base 410. Furthermore, the first fixing member 430 also provides installation space, allowing the bottom of the sliding mechanism 120 to be connected to the first fixing member 430, thus facilitating the connection between the sliding mechanism 120 and the fixing device 400. Optionally, the first fixing member 430 can be a screw, a pin, or other component capable of fixing the fixing base 410 and the fixing body 420 together.

[0122] See Figures 16 to 19In one embodiment, the fixing body 420 has a fourth groove 423, which communicates with the second fixing hole 422. A portion of the sliding mechanism 120 is located in the fourth groove 423 and connected to the first fixing member 430. The top of the fixing body 420 has a recessed fourth groove 423 that communicates with the second fixing hole 422. When the first fixing member 430 is installed on the fixing body 420 and the fixing base 410, the fourth groove 423 provides a certain installation space around the first fixing member 430. The bottom of the sliding mechanism 120 is located in the fourth groove 423 and connected to the first fixing member 430 within the fourth groove 423.

[0123] See Figures 1 to 3 , Figures 16 to 19 In this embodiment, there are two first fixing members 430, and correspondingly, there are two sliding mechanisms 120. The fixing device 400 is connected to its corresponding sliding mechanism 120. This improves the reliability of the connection between the fixing device 400 and the guide rail 110, and guides the movement of the fixing device 400 through the two sliding mechanisms 120. Of course, in other embodiments of this application, the number of first fixing members 430 may be one or other numbers, with each first fixing member 430 corresponding to one sliding mechanism 120.

[0124] See Figures 1 to 3 , Figure 20 In one embodiment, the sliding mechanism 120 includes a sliding wheel 121, a sliding body 122, and a third annular member 123. One end of the sliding body 122 is connected to the sliding wheel 121, and the other end is rotatably mounted with the third annular member 123. The third annular member 123 is movably connected to the fixing device 400. The sliding wheel 121 is located in the guide rail 110 and can slide along the guide rail 110. Figure 20 for Figure 3 The diagram shows the sliding mechanism 120 in the electric curtain 10. The sliding body 122 is the connecting body of the sliding mechanism 120. A sliding wheel 121 is provided above the sliding body 122, and a third annular component 123 is provided below the sliding body 122.

[0125] The third annular member 123 can be installed into the fourth groove 423 of the fixing device 400 and sleeved on the first fixing member 430. Thus, through the movable connection between the third annular member 123 and the first fixing member 430, the fixing device 400 can be installed onto the sliding mechanism 120, and further onto the guide rail 110. When the traction rope 300 moves the fixing device 400, the fixing device 400 can drive the sliding wheel 121 to move along the guide rail 110 via the third annular member 123, thereby guiding the movement of the fixing device 400. Optionally, the third annular member 123 can be a connecting ring.

[0126] In this application, the sliding mechanism 120 and the second support component 133 have essentially the same structure. The only difference is that the second support component 133 is connected to the drive device 200 or the second support base 143. After the second support component 133 moves and adjusts relative to the guide rail 110 to the required position, the second support component 133 is connected to the corresponding component and fixed to the required position. After the sliding mechanism 120 is connected to the fixing device 400, it can move synchronously with the fixing device 400 to guide the movement of the fixing device 400 and ensure the accuracy of opening or closing of the curtain body.

[0127] See Figures 1 to 3 , Figures 21 to 23 In one embodiment, the electric curtain 10 further includes a pretensioning device 500, which is connected to the traction rope 300 and can tension the traction rope 300. Figure 21 for Figure 3 A schematic diagram of the pretensioning device 500 in the electric curtain 10 shown. Figure 22 for Figure 21 The top view of the pre-tightening device 500 shown. Figure 23 for Figure 22 The diagram shows a cross-sectional view of the pretensioning device 500 along the DD direction. When the motorized curtain 10 has a single-opening structure, the pretensioning device 500 and the fixing device 400 can be simultaneously disposed in the first traction part 310 or the second traction part 320, and the curtain body is mounted on the fixing device 400 and / or the pretensioning device 500; or, when the motorized curtain 10 has a single-opening structure, one of the pretensioning device 500 and the fixing device 400 is disposed in the first traction part 310, and the other is disposed in the second traction part 320, and the curtain body is mounted on the fixing device 400 or the pretensioning device 500. When the motorized curtain 10 has a double-opening structure, one of the pretensioning device 500 and the fixing device 400 is disposed in the first traction part 310, and the other is disposed in the second traction part 320, and both the pretensioning device 500 and the fixing device 400 are connected to the curtain body.

[0128] In this embodiment, the pre-tensioning device 500 is disposed on the first traction part 310, and the fixing device 400 is disposed on the second traction part 320. The pre-tensioning device 500 can wind or release the traction rope 300. After the pre-tensioning device 500 is set, it can tension the traction rope 300 and prevent it from slack. When the electric curtain 10 is in manual mode, the pre-tensioning device 500 can wind the traction rope 300 to prevent it from drooping when the electric curtain 10 is manually opened or closed, reducing safety hazards and making it convenient for users.

[0129] When the electric curtain 10 is in electric mode, the tension of the pull rope 300 by the drive device 200 and the pretensioning device 500 allows the drive device 200 to drive the pull rope 300, directly pulling the pretensioning device 500 and the curtain body to move, thus achieving electric opening or closing of the curtain body. When the electric curtain 10 is in manual mode, the user pulls the curtain body, which in turn pulls the pull rope 300. The drive device 200 releases the pull rope 300, increasing its length. At this time, the pretensioning device 500 can wrap around the pull rope 300, preventing it from slackening or sagging, reducing safety hazards, and allowing the curtain body to be opened or closed manually.

[0130] See Figures 1 to 3 , Figures 21 to 23 In one embodiment, the pretensioning device 500 includes a support housing 510, a third winding wheel 520, and a pretensioning elastic member 530. The support housing 510 is connected to one end of the traction rope 300. The third winding wheel 520 is rotatably disposed in the support housing 510 and wound around the other end of the traction rope 300. The pretensioning elastic member 530 is disposed in the support housing 510 and connected to the third winding wheel 520. The pretensioning elastic member 530 can apply a pretensioning force to the third winding wheel 520. The pretensioning force applied by the pretensioning elastic member 530 enables the third winding wheel 520 to move synchronously with the traction rope 300 when the electric curtain 10 is in electric mode. The pretensioning force applied by the pretensioning elastic member 530 can also drive the third winding wheel 520 to rotate when the electric curtain 10 is in manual mode, causing the third winding wheel 520 to wind around the traction rope 300.

[0131] The support housing 510 serves as the outer casing of the pretensioning device 500. Both the third winding wheel 520 and the pretensioning elastic element 530 of the pretensioning device 500 are housed within the support housing 510. The support housing 510 integrates the third winding wheel 520 and the pretensioning elastic element 530 into a single unit, facilitating the assembly and connection of the pretensioning device 500 with the traction rope 300. Simultaneously, the support housing 510 also protects the third winding wheel 520 and the pretensioning elastic element 530, preventing interference between the traction rope 300 or other external components and the third winding wheel 520 and the pretensioning elastic element 530, thus ensuring the reliable operation of the pretensioning elastic element 530.

[0132] The third winding wheel 520 and the support housing 510 are components of the pretensioning device 500 that connect to the traction rope 300. The third winding wheel 520 is rotatably disposed in the support housing 510. One end of the traction rope 300 is fixed to the support housing 510, and the other end of the traction rope 300 is wound around the third winding wheel 520. When the third winding wheel 520 rotates, it can wind or release the traction rope 300. The pretensioning elastic element 530 is disposed in the support housing 510 and connected to the third winding wheel 520.

[0133] The pre-tensioning elastic element 530 can be tightened. After cooperating with the drive device 200, the pre-tensioning elastic element 530 can tighten the traction rope 300. The tension of the traction rope 300 after tightening can limit the rotation of the third winding pulley 520, so that the traction rope 300 always remains taut. Understandably, if the traction rope 300 becomes slack, the pre-tensioning elastic element 530 can drive the third winding pulley 520 to rotate, causing the third winding pulley 520 to wind around the traction rope 300, thus keeping the traction rope 300 taut.

[0134] When the electric curtain 10 is in electric mode, the pre-tensioning elastic element 530 tensions the pull rope 300. When the drive device 200 drives the pull rope 300 to move, the pull rope 300 can drive the curtain body to move synchronously, realizing the electric opening or closing of the curtain body. When the electric curtain 10 is in manual mode, when the user pulls the pull rope 300 through the curtain body, the drive device 200 can release the pull rope 300, and the length of the pull rope 300 increases. At this time, the pre-tensioning elastic element 530 can wrap around the pull rope 300 to prevent the pull rope 300 from slack and sagging, reducing safety hazards, and realizing the manual opening or closing of the curtain body.

[0135] In this application, when the electric curtain 10 is manually opened, the drive device 200 can release the traction rope 300. At this time, the pre-tensioning elastic member 530 can drive the third winding wheel 520 to wind the traction rope 300, preventing the traction rope 300 from sagging. When the electric curtain 10 is manually closed, the pulling force of the traction rope 300 on the third winding wheel 520 can overcome the pre-tensioning force of the pre-tensioning elastic member 530, allowing the third winding wheel 520 to rotate and release the traction rope 300. Of course, in other embodiments of this application, the electric curtain 10 can also have the third winding wheel 520 winding the traction rope 300 when manually closed, and the third winding wheel 520 releasing the traction rope 300 when manually opened.

[0136] See Figure 23 In one embodiment, the pre-tensioning elastic element 530 is a coil spring. The center end of the coil spring is connected to the third winding wheel 520 and rotates with the third winding wheel 520. The outer end of the coil spring is fixed to the support mechanism. When the third winding wheel 520 rotates, it can drive the coil spring to retract (wind) or stretch (tighten). The pre-tensioning elastic element 530 can be fully tightened or partially tightened. It is understood that the difference between full tightening and partial tightening lies in the degree of tension of the pre-tensioning elastic element 530. The degree of tension (pre-tension force) when fully tightened is greater than the pre-tension force when partially tightened. When the pre-tensioning elastic element 530 is fully tightened, it is stretched to its limit state (preset position). When partially tightened, it is not stretched to its limit state.

[0137] When the pre-tensioned elastic element 530 is fully tightened, the coil spring is in a stretched state. When the drive device 200 releases the traction rope 300, the traction rope 300 becomes longer. At this time, the pulling force of the traction rope 300 on the third winding wheel 520 is less than the elastic force of the coil spring. The coil spring can drive the third winding wheel 520 to rotate, and the third winding wheel 520 winds around the traction rope 300, gradually reducing the elastic force of the coil spring. Furthermore, after the third winding wheel 520 is fully wound around the traction rope 300, the coil spring is not completely retracted and remains partially stretched, meaning the coil spring is still partially taut, ensuring that the traction rope 300 remains taut at all times. In this way, the traction rope 300 can be tensioned and wound around simultaneously, preventing the traction rope 300 from sagging.

[0138] When the third winding wheel 520 pulls the line outward, that is, when the third winding wheel 520 releases the traction rope 300, the pulling force of the traction rope 300 on the third winding wheel 520 is greater than the elastic force of the coil spring. At this time, the traction rope 300 can pull the third winding wheel 520 to rotate against the elastic force of the coil spring. Then, the third winding wheel 520 drives the coil spring to stretch. When the third winding wheel 520 releases the traction rope 300, the coil spring is fully tightened and stretched to the limit position or the preset position.

[0139] Of course, in other embodiments of this application, the preload elastic element 530 can also be a torsion spring, which is connected to the third winding wheel 520, with one arm fixed to the support housing 510. When the torsion spring rotates, it can drive the other arm to move relative to the first arm, thereby adjusting the elastic force of the torsion spring and thus adjusting the preload of the preload elastic element 530. It is worth noting that the working principle of the preload elastic element 530 as a torsion spring is essentially the same as that of a coil spring, and will not be described again here.

[0140] In one embodiment, the pre-tightening device 500 further includes a second fixing member 540. The supporting housing 510 has a third fixing hole (not shown) and a fifth groove 511, the fifth groove 511 communicating with the third fixing hole. The second fixing member 540 is installed in the third fixing hole, and the sliding mechanism 120 is also connected to the second fixing member 540. It can be understood that there are multiple sliding mechanisms 120, some of which are connected to the fixing device 400 and some of which are connected to the pre-tightening device 500, so as to fix the fixing device 400 and the pre-tightening device 500 to the guide rail 110 respectively.

[0141] The top of the support housing 510 has a recessed fifth groove 511, which provides space for the installation of the third annular member 123 of the sliding mechanism 120. When the second fixing member 540 is installed into the support housing 510, part of the second fixing member 540 is located in the fifth groove 511, which provides a certain installation space around the second fixing member 540. The third annular member 123 is located in the fifth groove 511 and connects to the second fixing member 540 within the fifth groove 511.

[0142] See Figures 1 to 3 , Figures 21 to 23 In this embodiment, there are two second fixing members 540. Correspondingly, the pre-tightening device 500 is connected to two sliding mechanisms 120. This improves the reliability of the connection between the pre-tightening device 500 and the guide rail 110, and guides the movement of the pre-tightening device 500 through the two sliding mechanisms 120. Of course, in other embodiments of this application, the number of second fixing members 540 may be one or other, with each second fixing member 540 corresponding to one sliding mechanism 120.

[0143] See Figures 1 to 4 In one embodiment, the traction rope 300 includes a first traction rope 330 and a second traction rope 340. One end of the first traction rope 330 is connected to a third winding wheel 520, and the other end of the first traction rope 330 passes around the guide wheel 142 of the track device 100 and is wound and connected to the first winding wheel 211 of the drive device 200. One end of the second traction rope 340 is wound around the first winding wheel 211 of the drive device 200, and the other end of the second traction rope 340 is connected to the pre-tensioning elastic member 530.

[0144] The traction ropes 300 can be divided into a first traction rope 330 and a second traction rope 340 according to their quantity, and into a first traction section 310 and a second traction section 320 according to their layout. The first traction section 310 includes a portion of the first traction rope 330 and the second traction rope 340, and the second traction section 320 includes the remaining portion of the traction ropes 300. One end of the first traction rope 330 is wound and connected to the first winding wheel 211, and the other end of the first traction rope 330 passes around the guide wheel 142 of the second support mechanism 140 and is wound and connected to the third winding wheel 520. One end of the second traction rope 340 is wound and connected to the second winding wheel 212, and the other end of the second traction rope 340 is fixed to the support housing 221.

[0145] Thus, when the electric curtain 10 is opened or closed electrically, one of the first winding wheel 211 and the second winding wheel 212 can wind or release the traction rope 300, and the pretensioning device 500 keeps the traction rope 300 taut. When the electric curtain 10 is opened or closed manually, one of the first winding wheel 211 and the second winding wheel 212 can release the traction rope 300. At this time, the pretensioning elastic element 530 can drive the third winding wheel 520 to rotate to wind the first traction rope 330, preventing the first traction rope 330 from sagging.

[0146] Understandably, the electric curtain 10 of this application can be adapted to existing manual curtains. In this case, the drive device 200 is connected to the first support component 132 and the second support component 133 in the manual curtain via the first support base 131, and the drive device 200 is fixed to the first end 111 of the guide rail 110. Then, the pull rope 300 is connected to the drive device 200. At the same time, the second support base 143 and the mounting component 141 are fixed to the second end 112 of the guide rail 110 via the third support component 144 and the fourth support component 145. The fixing device 400 and the pre-tensioning device 500 are installed on the pull rope 300 and connected to the sliding mechanism 120 on the guide rail 110. When the electric curtain 10 is installed as a whole, the installation method is essentially the same, except that the track device 100 is installed in conjunction with the drive device 200, the fixing device 400, and the pre-tensioning device 500.

[0147] See Figures 1 to 23 The following describes the working state of the electric curtain 10 in conjunction with the specific structure of the electric curtain 10 described above:

[0148] When the electric curtain 10 is in its initial state, the drive assembly 222 is centered and separated from the first output assembly 223 and the second output assembly 224, which can rotate freely. One end of the first traction rope 330 is wound around and connected to the first winding wheel 211, and the other end passes over the guide wheel 142 in the second support mechanism 140 and is wound around and connected to the third winding wheel 520 of the pretensioning device 500. One end of the second traction rope 340 is wound around and connected to the second winding wheel 212, and the other end is fixed to the support housing 510 of the pretensioning device 500. The curtain body is installed on the fixing device 400 and / or the pretensioning device 500. The first winding wheel 211, the second winding wheel 212, and the third winding wheel 520 can tension the traction rope 300 to prevent it from being pulled out.

[0149] When the electric curtain 10 is opened electrically, the drive component 222 is powered on and operates. The drive component 222 can cooperate with the second output component 224 for transmission. In turn, the second output component 224 drives the second winding wheel 212 to rotate, so that the second winding wheel 212 winds the second traction rope 340. The second traction rope 340 drives the pretensioning device 500, the first traction rope 330, and the fixing device 400 to move. The first traction rope 330 can pull the first winding wheel 211, so that the first winding wheel 211 releases the traction rope 300. During this process, the curtain body gradually opens.

[0150] When the electric curtain 10 is closed electrically, the drive component 222 is powered on and operates. The drive component 222 can cooperate with the first output component 223 for transmission. In turn, the first output component 223 drives the first winding wheel 211 to rotate, so that the first winding wheel 211 winds the first traction rope 330. The first traction rope 330 drives the fixing device 400, the pre-tensioning device 500 and the second traction rope 340 to move. The second traction rope 340 can pull the second winding wheel 212, so that the second winding wheel 212 releases the second traction rope 340. During this process, the curtain body gradually closes.

[0151] When the electric curtain 10 is manually opened, it is in its initial state, with the drive assembly 222 separated from the first output assembly 223 and the second output assembly 224, both of which can rotate freely. Pulling the curtain body moves the pre-tensioning device 500 toward the first end 111 of the guide rail 110. At this time, the second traction rope 340 moves toward the second winding wheel 212. Under pre-tensioning, the second winding wheel 212 can wind the second traction rope 340. Simultaneously, the pre-tensioning device 500 pulls the first traction rope 330, causing the fixing device 400 to move toward the second end 112 of the guide rail 110, thus manually opening the curtain body. During this process, the fixing device 400 pulls the first winding wheel 211 to release the first traction rope 330. At this time, the third winding wheel 520 can wind the first traction rope 330, preventing it from sagging. It is worth noting that manually closing the electric curtain 10 is the reverse process of manually opening the curtain body, which will not be described further here.

[0152] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0153] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. An electric curtain, characterized in that, include: A track device, including a guide rail and a sliding mechanism, wherein the sliding mechanism is slidably disposed on the guide rail; The driving device is located at one end of the guide rail; A traction rope, with its two ends connected to the drive device, and wrapped around the guide rail at the end away from the drive device, forms a first traction part and a second traction part arranged opposite to each other, and the drive device can drive the traction rope to move. A fixing device is fixed to the first traction part and / or the second traction part and connected to the sliding mechanism. The driving device can drive the traction rope to move the fixing device so that the electric curtain can be opened or closed.

2. The electric curtain according to claim 1, characterized in that, The track device further includes a first support mechanism and a second support mechanism, which are respectively disposed at both ends of the guide rail. The first support mechanism is connected to the drive device, and the second support mechanism is capable of being wound with the traction rope. The first support mechanism includes a first support base, a first support component, and a second support component. The first support base is disposed on the top of the driving device, and the first support component and the second support component are connected to the first support base and the guide rail.

3. The electric curtain according to claim 2, characterized in that, The first support assembly includes a first support body, a fastener, a first annular component, and a support plate. The first support body is disposed at the end and both sides of the guide rail. The support plate is snapped into the guide rail. The fastener passes through the first support body and is connected to the support plate. The first annular component is disposed at the end of the fastener facing the first support base and is movably connected to the first support base. And / or, the second support assembly includes a roller, a second support body, and a second annular member. One end of the second support body is connected to the roller, and the other end is rotatably mounted with the second annular member. The second annular member is movably connected to the first support base. The roller is located in the guide rail and can slide along the guide rail.

4. The electric curtain according to claim 2, characterized in that, The first support base has a recessed first groove, and the first support assembly further includes a first fixing shaft, a first annular member located in the first groove, the first fixing shaft passing through the first annular member and mounted on the first support base; And / or, the first support base has a recessed second groove, the second support assembly further includes a second fixing shaft, a second annular member is located in the second groove, the second fixing shaft passes through the second annular member and is mounted on the first support base; And / or, the side wall of the first support base has a first fixing groove, the top of the driving device has a first fixing protrusion and a third groove, the first fixing protrusion is disposed on the side wall of the third groove, and the first support base is partially disposed in the third groove, so that the first fixing protrusion can be snapped into the first fixing groove. The first fixing groove includes a first guide groove and a first mounting groove. The first guide groove is connected to the first mounting groove. The connection between the first guide groove and the first mounting groove has a first limiting part. The first fixing protrusion can enter the first mounting groove along the first guide groove and be locked by the first limiting part.

5. The electric curtain according to claim 2, characterized in that, The second support mechanism includes a mounting component, a guide wheel, a second support base, a third support assembly, and a fourth support assembly. The third support assembly and the fourth support assembly connect the second support base to the guide rail. The mounting component is mounted on the second support base. The guide wheel is rotatably mounted on the mounting component and around which the traction rope is wound. The side wall of the second support base has a second fixing groove, and the inner wall of the mounting component has a second fixing protrusion, which can be snapped into the second fixing groove. The second fixing groove includes a second guide groove and a second mounting groove. The second guide groove is connected to the second mounting groove. The connection between the second guide groove and the second mounting groove has a second limiting part. The second fixing protrusion can enter the second mounting groove along the second guide groove and be locked by the second limiting part.

6. The electric curtain according to claim 1, characterized in that, The fixing device includes a fixing base and a fixing body. The fixing base has a receiving cavity, through which the traction rope can pass and extend. The fixing body is installed in the receiving cavity and presses the traction rope against the fixing base. Wherein, the fixing seat has a first fixing tooth facing the fixing body, and / or the fixing body has a second fixing tooth facing the fixing seat, and the first fixing tooth and / or the second fixing tooth abuts against the traction rope; And / or, the fixing device further includes a first fixing member, the fixing base has a through first fixing hole, the fixing body has a through second fixing hole, the fixing body is installed on the fixing base, the first fixing hole and the second fixing hole are coaxially arranged, the first fixing member is installed in the first fixing hole and the second fixing hole, and is connected to the sliding mechanism.

7. The electric curtain according to any one of claims 1 to 6, characterized in that, The sliding mechanism includes a sliding wheel, a sliding body, and a third annular component. One end of the sliding body is connected to the sliding wheel, and the other end is rotatably mounted with the third annular component. The third annular component is movably connected to the fixing device. The sliding wheel is located in the guide rail and can slide along the guide rail.

8. The electric curtain according to any one of claims 1 to 6, characterized in that, The driving device includes a winding mechanism and a driving mechanism. The winding mechanism includes a first winding wheel and a second winding wheel, which are used to wind the two ends of the traction rope. The drive mechanism includes a support housing and a drive component, a first output component, and a second output component rotatably connected to the support housing. The first output component is coaxially connected to the first winding wheel and drives the first winding wheel to rotate to wind or release the traction rope. The second output component is coaxially arranged with the second winding wheel and drives the second winding wheel to rotate to wind or release the traction rope.

9. The electric curtain according to any one of claims 1 to 6, characterized in that, The electric curtain also includes a pre-tensioning device, which includes a support housing, a third winding wheel, and a pre-tensioning elastic element. The support housing is connected to one end of the traction rope, the third winding wheel is rotatably disposed in the support housing and wound around the other end of the traction rope, the pre-tightening elastic element is disposed in the support housing and connected to the third winding wheel, and the pre-tightening elastic element can apply a pre-tightening force to the third winding wheel; The preload applied by the preload elastic element enables the third winding wheel to move synchronously with the traction rope when the electric curtain is in electric mode. The preload applied by the preload elastic element can also drive the third winding wheel to rotate when the electric curtain is in manual mode, so that the third winding wheel winds the traction rope.

10. The electric curtain according to claim 9, characterized in that, The traction rope includes a first traction rope and a second traction rope. One end of the first traction rope is connected to the third winding wheel, and the other end of the first traction rope passes around the guide wheel of the track device and is wound and connected to the first winding wheel of the drive device. One end of the second traction rope is wound around the first winding wheel of the drive device, and the other end of the second traction rope is connected to the pre-tensioned elastic element.

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