Curtain and actuation system thereof

Abstract

This invention provides an actuation system for a curtain, including a shaft coupling member, a brake member, a brake coupling member, a lifting actuation module, and a clutch mechanism. The shaft coupling member is pivotable to raise and lower a movable track of the curtain. The brake member is connected to the brake coupling member and is adapted to apply a braking force to the brake coupling member to prevent it from pivoting. The lifting actuation module includes a connected roller and an operating member, the roller being pivotable in a rolling direction for retracting the operating member and in an extending direction for extending the operating member. The clutch mechanism includes two clutch members, both movable relative to the brake coupling member and the roller to selectively couple the shaft coupling member to one of the roller and the brake coupling member.

Description

Technical Field

[0001] This invention relates to curtains and their actuation systems. Background Technology

[0002] Some curtains on the market use a control cord to raise the bottom of the curtain and a rod to lower it. More specifically, the control cord can be pulled to drive a rotating component to pivot, and the rotation of the rotating component is transmitted to a drive shaft, causing the drive shaft to pivot and wind up the hanging cord connected to the bottom. When the user rotates the rod, it causes the brake coupled to the rod to release the drive shaft, causing the drive shaft to pivot, and the bottom can move downwards due to gravity.

[0003] In the aforementioned types of curtains, when the rotating component and drive shaft rotate to pull up the bottom, the braking force of the braking component may create resistance on the drive shaft. Therefore, the user must overcome the braking force to pull up the bottom, making the operation more strenuous. Summary of the Invention

[0004] One object of the present invention is to provide a curtain and an actuation system suitable for the curtain, which can reduce internal friction, thereby reducing component wear, and enabling the actuation system to be operated with less force.

[0005] According to one embodiment, the actuation system includes: a shaft coupling member; a pivotable movable track for raising and lowering curtains; a connected brake member and a brake coupling member, the brake member being adapted to apply a braking force to the brake coupling member to prevent the brake coupling member from pivoting; a lifting actuation module including a connected drum and an operating member, the drum being pivotable in a winding direction for winding the operating member and pivotable in an extension direction for extending the operating member; and a clutch mechanism including two clutches movable relative to the brake coupling member and the drum to selectively couple the shaft coupling member to one of the drum and the brake coupling member, wherein: when the shaft coupling member is decoupled from the brake coupling member and coupled to the drum, the drum and the shaft coupling member are pivotable synchronously relative to the brake coupling member; when the shaft coupling member is coupled to the brake coupling member and decoupled from the drum, the braking force of the brake member is adapted to prevent the shaft coupling member from pivoting.

[0006] According to one embodiment, the two clutches are configured to slide in opposite directions to selectively couple the shaft coupling to one of the drum and the brake coupling.

[0007] According to one embodiment, when the shaft coupling member is decoupled from the brake coupling member and coupled to the drum, one of the two clutches can pivot synchronously with the shaft coupling member and the drum, while the brake coupling member and the other of the two clutches remain static.

[0008] According to one embodiment, the braking coupling member and one of the two clutch members are disposed around the middle portion of the shaft coupling member, and the other of the two clutch members is disposed adjacent to the end of one of the shaft coupling members.

[0009] According to one embodiment, the two clutches include: a first clutch coupled to the brake coupling member, the first clutch being movable relative to the brake coupling member between a first position and a second position, wherein the first clutch is disengaged from the shaft coupling member when in the first position and engaged with the shaft coupling member when in the second position; and a second clutch coupled to the drum, the second clutch being movable relative to the drum between a third position and a fourth position, wherein the second clutch is disengaged from the shaft coupling member when in the third position. When the second clutch is in the fourth position, it engages with the shaft coupling member; wherein: the rotation of the drum in the extension direction causes the second clutch to move to the fourth position and the first clutch to move to the first position, thereby enabling the drum, the shaft coupling member and the second clutch to pivot synchronously relative to the brake coupling member; and the rotation of the drum in the winding direction causes the second clutch to move to the third position, and the first clutch can be converted to the second position when the second clutch is in the third position, thereby making the braking force of the brake member suitable for preventing the shaft coupling member from pivoting.

[0010] According to one embodiment, the shaft coupling member and the drum are pivotable about a longitudinal axis, and the first clutch member and the second clutch member are slidable along the longitudinal axis.

[0011] According to one embodiment, the shaft coupling includes a plurality of first protrusions distributed around the longitudinal axis and a plurality of second protrusions distributed around the longitudinal axis. The first clutch has a plurality of third protrusions, and the second clutch has a plurality of fourth protrusions. The plurality of third protrusions engage with the plurality of first protrusions when the first clutch is in a second position, and the plurality of fourth protrusions engage with the plurality of second protrusions when the second clutch is in a fourth position.

[0012] According to one embodiment, the plurality of first protruding teeth are arranged along the first circumference of the shaft coupling member, and the plurality of second protruding teeth are arranged along the second circumference of the shaft coupling member, wherein the second circumference is smaller than the first circumference.

[0013] According to one embodiment, the arrangement of the plurality of first teeth and the plurality of third teeth enables rotation of the drum and the shaft coupling coupled by the second clutch to cause the first clutch to move from a second position to a first position.

[0014] According to one embodiment, the second clutch is coupled to the drum by a sliding engagement, wherein the sliding engagement is configured such that rotation of the drum in the extension direction causes the second clutch to slide toward the shaft coupling member to a fourth position, thereby engaging the plurality of fourth teeth with the plurality of second teeth, and rotation of the drum in the winding direction causes the second clutch to slide away from the shaft coupling member to a third position, thereby disengaging the plurality of fourth teeth from the plurality of second teeth.

[0015] According to one embodiment, the first clutch is movable between a first position and a second position when it is in sliding contact with the brake coupling.

[0016] According to one embodiment, the braking coupling member has a hollow interior adapted to at least partially accommodate the first clutch member, wherein the first clutch member slides in contact with the braking coupling member within the hollow interior via at least one inclined surface provided on the first clutch member or the braking coupling member.

[0017] According to one embodiment, the first clutch has a notch with a first inclined surface and a first stop surface, and one of the brake couplings has a protrusion on its inner sidewall with a second inclined surface and a second stop surface. The first clutch can move relative to the brake coupling while the first inclined surface slides in contact with the second inclined surface, and the braking force of the brake is adapted to prevent the shaft coupling from pivoting through the contact between the first stop surface and the second stop surface.

[0018] According to one embodiment, the lifting actuation module includes a spring connected to the drum, the spring being adapted to bias the drum to pivot in the winding direction.

[0019] According to one embodiment, the braking member is disposed around the braking coupling member and connected to the braking release member, the braking member applies braking force to the braking coupling member through frictional contact between itself and the braking coupling member, and the braking release member is movable to cause the braking member to release its frictional contact with the braking coupling member.

[0020] According to one embodiment, it further includes a control rod connected to the brake release member via a transmission assembly. The control rod can be operated to cause the brake release member to move, thereby releasing the brake member from its frictional contact with the brake coupling member.

[0021] According to one embodiment, the curtain tilting mechanism is further included, which can be operated to adjust the angle position of the shading structure in the curtain. The control rod is connected to the curtain tilting mechanism via a second transmission assembly. The control rod is slidable to cause the brake release member to move and release the brake member from its frictional contact with the brake coupling member. The control rod is also pivotable to actuate the curtain tilting mechanism.

[0022] According to one embodiment, the shaft coupling is pivotally coupled to the drive shaft, and the slat tilting mechanism includes a wheel and a ladder assembly connected to each other. The wheel is pivotable about the drive shaft and connected to the control rod via the second transmission assembly.

[0023] In addition, the present invention also provides a curtain, comprising: a top rail, a movable rail, and a shielding structure disposed between the top rail and the movable rail; a winding unit mounted on the top rail, the winding unit being connected to the movable rail via a suspension member; and the actuation system, wherein the shaft coupling member is pivotally coupled to the winding unit via a drive shaft, enabling the shaft coupling member and the drive shaft to pivot synchronously to pull up and lower the movable rail.

[0024] According to another embodiment, the curtain provided by the present invention includes: a top rail, a movable rail, and a shielding structure disposed between the top rail and the movable rail, the shielding structure including a plurality of slats; a winding unit mounted on the top rail, the winding unit being connected to the movable rail via a suspension member; and the actuation system, wherein the shaft coupling member is pivotally coupled to the winding unit via a drive shaft, and the slat tilting mechanism is connected to the plurality of slats, thereby enabling the shaft coupling member and the drive shaft to pivot synchronously to pull up and lower the movable rail, and the slat tilting mechanism can be operated to adjust the angle position of the plurality of slats. Attached Figure Description

[0025] Figure 1 A perspective view of a curtain provided according to an embodiment of the present invention is shown.

[0026] Figure 2 Draw Figure 1 A 3D diagram showing the movable track in the curtains moving down from the top track.

[0027] Figure 3 An exploded view of the control module in the actuation system for curtains is shown.

[0028] Figure 4 Draw Figure 3 A cross-sectional view of the control module.

[0029] Figure 5 Draw Figure 4A 3D view of the control module after part of its outer shell has been removed.

[0030] Figure 6 An exploded view of the clutch mechanism in the control module is shown.

[0031] Figure 7 and Figure 8 A partial cross-sectional view illustrating an exemplary sliding contact between a clutch element in a clutch mechanism and the drum of a lifting actuation module.

[0032] Figure 9 Draw Figure 3 A schematic diagram showing the structural details of a transmission assembly that connects the control rod to the brake release component in the control module.

[0033] Figure 10 Draw Figure 3 A schematic diagram of the biasing mechanism in the control module for restoring the initial position of the auxiliary control rod, wherein the initial position of the control rod corresponds to the brake element being in a tight state relative to the brake coupling element.

[0034] Figure 11 and Figure 12 The drawing is shown as an unfolding. Figure 1 A diagram illustrating the operation of the curtains.

[0035] Figure 13 and Figure 14 The drawing is shown as a pull-up. Figure 1 A diagram illustrating the operation of the movable track for the curtains.

[0036] Figure 15 An exploded view of a control module provided in an actuation system for curtains according to another embodiment is shown.

[0037] Figure 16 Draw Figure 15 An enlarged view of some structural details of a transmission component included in the control module.

[0038] Figure 17 and Figure 18 The illustration is shown as an unfolding feature. Figure 15 The diagram shows the operation of the curtain control module.

[0039] Figure 19 A perspective view of an actuation system including a slat tilting mechanism according to another embodiment is shown.

[0040] Figure 20 A three-dimensional diagram showing a portion of the curtain tilting mechanism.

[0041] Figure 21 Draw Figure 19 An exploded view showing the structural details of the control module in the actuation system.

[0042] Figure 22 The illustration shows a configuration according to an embodiment of the present invention. Figure 19 A 3D diagram of the curtain's actuation system.

[0043] Figure 23 and Figure 24 The drawing is shown as an unfolding. Figure 22 A diagram illustrating the operation of the curtains.

[0044] Figure 25 and Figure 26 The drawing is for adjustment Figure 22 A schematic diagram illustrating the angular position of the concealing structure in a curtain.

[0045] Figure 27 and Figure 28 The drawing is shown as a pull-up. Figure 22 A diagram illustrating the operation of the movable track for the curtains.

[0046] List of reference numerals

[0047] 100: Curtains

[0048] 102: Top Rail

[0049] 104: Movable rail

[0050] 106: Shielding Structure

[0051] 110: Suspension components

[0052] 116: Curtain slats

[0053] 200: Actuation System

[0054] 202: Drive shaft

[0055] 204: Winding unit

[0056] 206: Control Module

[0057] 208: Vertical axis

[0058] 210: Outer shell

[0059] 210A: Inner cavity

[0060] 212A, 212B: Shell

[0061] 212C: Cover

[0062] 212D: Support

[0063] 214: Shaft coupling component

[0064] 216: Braking components

[0065] 216A, 216B: End caps

[0066] 218: Braking coupling component

[0067] 220: Lifting Actuation Module

[0068] 222: Clutch mechanism

[0069] 224: Fixed shaft

[0070] 226: Bump

[0071] 228: Shaft

[0072] 230: Through hole

[0073] 232: Hollow interior

[0074] 234: Outer surface

[0075] 236: Roll

[0076] 238: Operating components

[0077] 240: Spring

[0078] 242: Inner cavity

[0079] 244, 246: Clutch components

[0080] 248: Middle section

[0081] 250: End

[0082] 252: Gap

[0083] 254: Inner wall

[0084] 256: Protrusion

[0085] 258: Incline

[0086] 260A, 260B: Stopping surface

[0087] 262: Incline

[0088] 264A, 264B: Stopping surfaces

[0089] 266, 268, 276, 278: Convex teeth

[0090] 270: Incline

[0091] 270A: Groove

[0092] 272: Protrusion

[0093] 274: Torsion Spring

[0094] 280: Brake release component

[0095] 282: Control stick

[0096] 284: Transmission Components

[0097] 286: Handle

[0098] 287: Guiding components

[0099] 288, 290: Transmission components

[0100] 288A, 288B, 290A, 290B, 280A: Gear section

[0101] 292: rack and pinion

[0102] 294: Bias Spring

[0103] 302: Transmission assembly

[0104] 304: Slider

[0105] 306: Pole section

[0106] 308: Channel

[0107] 310, 312, 314: Transmission components

[0108] 316: Teeth

[0109] 312A, 314A, 314B: Gear section

[0110] 318: Bias Spring

[0111] 320: Rod

[0112] 322: Shoulder

[0113] 324: Sidewall

[0114] 330: Curtain tilting mechanism

[0115] 332: Ladder assembly

[0116] 332A, 332B: Long strip

[0117] 334: Rotary Wheel

[0118] 340: Transmission assembly

[0119] 342, 344, 346, 348, 350: Gears

[0120] 342A: Through hole

[0121] 352: Drive shaft

[0122] Y: Longitudinal axis

[0123] R1, R2, D1, D2, X1, X2, V1, V2, S1, S2: Direction. Detailed Implementation

[0124] Figure 1 and Figure 2 The illustration shows perspective views of the curtain 100 provided in an embodiment of the present invention in different states. (See attached image.) Figure 1 and Figure 2 The curtain 100 may include a top track 102, a movable track 104, a shading structure 106, and an actuation system 200. Figure 1 To indicate whether the curtain 100 is folded or raised, Figure 2 This indicates whether the curtain 100 is open or closed.

[0125] The top rail 102 can be fixed to the top of the window and can be of any shape. According to one embodiment, the top rail 102 can have an elongated shape, wherein it has a cavity for accommodating at least part of the actuation system 200.

[0126] The movable rail 104 can be suspended by multiple suspension components 110 ( Figure 2 (Drawn in dashed lines) Suspended from the top rail 102. According to one embodiment, the movable rail 104 is an elongated track with a channel for securing the curtain structure 106. The suspension element 110 includes, but is not limited to, ropes, strips, ribbons, etc. In the illustrated embodiment, the movable rail 104 is the bottom rail of the curtain 100. However, it should be understood that other curtain elements may be provided below the movable rail 104 as needed.

[0127] The shielding structure 106 can be any suitable structure that extends and overlaps between the top rail 102 and the movable rail 104. According to one example, the shielding structure 106 is, for example, a cell-like structure, which may include, but is not limited to, a honeycomb structure. In use, the shielding structure 106 can be suspended from the top rail 102 and can be unfolded or overlapped by displacement of the movable rail 104 away from or towards the top rail 102.

[0128] See Figure 1 and Figure 2 The movable track 104 can move vertically relative to the top track 102 to adjust the curtain 100 to a desired state. For example, the movable track 104 can move upward toward the top track 102 to overlap the blinding structure 106 (e.g., Figure 1 (as shown), or move downwards away from the top rail 102 to deploy the shielding structure 106 (as shown). Figure 2 (As shown). The vertical position of the movable rail 104 relative to the top rail 102 can be controlled by the operation of the actuation system 200.

[0129] See Figure 1 and Figure 2The actuation system 200 is connected to the top rail 102 and can be operated to move the movable rail 104 relative to the top rail 102 for adjustment. The actuation system 200 may include a drive shaft 202, a plurality of winding units 204 pivotally coupled to the drive shaft 202, and a control module 206 coupled to the drive shaft 202.

[0130] Drive shaft 202 and winding unit 204 can be mounted in top rail 102. Drive shaft 202 is coupled to winding unit 204 and pivotable about longitudinal axis 208. Each winding unit 204 is connected to movable rail 104 via at least one suspension member 110, and can be operated to retract the suspension member 110 to pull up the movable rail 104 or extend the suspension member 110 to lower the movable rail 104. For example, winding unit 204 may include a drum (not shown) pivotally coupled to drive shaft 202 and connected to one end of suspension member 110, while the other end of suspension member 110 is connected to movable rail 104, thereby allowing the drum to pivot synchronously with drive shaft 202 to retract or extend suspension member 110. Since all winding units 204 are coupled to the drive shaft 202, the winding units 204 can operate synchronously to wind up the suspension member 110 or extend the suspension member 110.

[0131] The control module 206 is coupled to the drive shaft 202 and can be operated to drive the drive shaft 202 to pivot in any direction about the longitudinal axis 208, so as to raise or lower the movable rail 104. Figure 1 and Figure 2 , Figure 3 An exploded view of the structure of control module 206 is shown. Figure 4 Then draw a cross-sectional view of the control module 206.

[0132] See Figure 1-4 The control module 206 may include a housing 210, which may be fixed to the top rail 102. The housing 210 may have an inner cavity 210A suitable for accommodating at least some of the components of the control module 206. According to one example, the housing 210 may include two housings 212A, 212B and a cover 212C and a bracket 212D, with the housings 212A and 212B fixedly connected to define at least a portion of the inner cavity 210A, and the cover 212C and the bracket 212D fixedly connected to the housings 212A to close one side of the inner cavity 210A. Figure 5 A perspective view of the control module 206 after removing part of its outer casing 210 is shown to more clearly show part of the internal structure of the control module 206.

[0133] See Figure 3-5The control module 206 may include a shaft coupling 214, a brake element 216, a brake coupling 218, a lifting actuation module 220, and a clutch mechanism 222, all of which are assembled with the housing 210. To facilitate the assembly of the components, the housing 210 may include a fixed shaft 224 having multiple segments of different sizes. According to one example, the fixed shaft 224 may include a protrusion 226 fixed to the support 212D, and a shaft portion 228 fixed to the protrusion 226. The protrusion 226 and the shaft portion 228 are generally coaxial with respect to the longitudinal axis 208. It should be understood that the protrusion 226 and the shaft portion 228 may also be a single component, which may be fastened to or integrally formed with the support 212D.

[0134] The shaft coupling member 214 is at least partially housed within the inner cavity 210A of the housing 210 and can extend outwardly from the housing 212B. According to one embodiment, the shaft coupling member 214 can be a single component with an elongated shape. The shaft coupling member 214 can be pivotally connected about a fixed shaft 224, wherein the shaft portion 228 of the fixed shaft 224 can be inserted into a through hole 230 provided in the shaft coupling member 214.

[0135] Shaft coupling member 214 is pivotally coupled to drive shaft 202, allowing drive shaft 202 and shaft coupling member 214 to pivot synchronously about longitudinal axis 208 relative to housing 210. For example, one end of drive shaft 202 can be inserted into through hole 230 on the side of shaft coupling member 214 opposite to fixed shaft 224. Furthermore, drive shaft 202 can be fixed to shaft coupling member 214 by fasteners (not shown). Accordingly, shaft coupling member 214 can be pivotally coupled to winding unit 204 via drive shaft 202, allowing drive shaft 202 and shaft coupling member 214 to pivot synchronously about longitudinal axis 208 to raise and lower movable rail 104.

[0136] Braking element 216 is adapted to generate braking force to prevent braking coupling element 218 from pivoting. According to one example, braking element 216 and braking coupling element 218 may be arranged and connected about a longitudinal axis 208. For example, braking coupling element 218 may have a hollow interior 232 and be arranged about a middle section of shaft coupling element 214, such that a gap is maintained between the middle section of shaft coupling element 214 and braking coupling element 218 through the hollow interior 232. Therefore, shaft coupling element 214 can pivot relative to braking coupling element 218 during operation.

[0137] Braking element 216 may be disposed around braking coupling element 218 and contact the outer surface 234 of braking coupling element 218, enabling braking element 216 to apply braking force to braking coupling element 218 to prevent braking coupling element 218 from pivoting about longitudinal axis 208. For example, outer surface 234 may be defined on a ring portion of braking coupling element 218, and braking element 216 may include a torsion spring surrounding the ring portion of braking coupling element 218 and configured to frictionally contact outer surface 234. Braking element 216 may apply braking force to braking coupling element 218 through the frictional contact between braking element 216 and outer surface 234 of braking coupling element 218.

[0138] See Figure 3-5 The lifting actuation module 220 may include a drum 236, an operating member 238, and a spring 240, wherein the drum 236 is connected to the operating member 238, and the spring 240 is connected to the drum 236. The operating member 238 may be a linear elastic element, one end of which is fixedly connected to the drum 236. The operating member 238 may include, but is not limited to, ropes, straps, etc. The drum 236 is pivotally connected to the housing 210, such that the drum 236 can pivot in the winding direction to wind up the operating member 238, and pivot in the extension direction to extend the operating member 238. According to one embodiment, the drum 236 may be pivotally connected about a fixed axis 224, such that the drum 236 can pivot about a longitudinal axis 208 to wind up the operating member 238 and to extend the operating member 238.

[0139] Spring 240 is connected to drum 236 and adapted to bias drum 236 to pivot in the winding direction. According to one embodiment, drum 236 may have a cavity 242 through which a fixed shaft 224 passes. Spring 240 may be disposed within the cavity 242 about the fixed shaft 224, with both ends of spring 240 connected to the fixed shaft 224 (e.g., at its protrusion 226) and drum 236, respectively. Lifting the actuation module 220 can be achieved by pulling the actuating member 238 to pivot drum 236 in the extension direction onto movable rail 104. When the actuating member 238 is released, spring 240 can cause drum 236 to pivot and wind up at least a portion of the actuating member 238.

[0140] The clutch mechanism 222 is configured to selectively couple the shaft coupling member 214 to one of the lifting actuation module 220 and the braking coupling member 218. The clutch mechanism 222 couples the shaft coupling member 214 to the drum 236 of the lifting actuation module 220 and decouples the shaft coupling member 214 from the braking coupling member 218 in response to the pivoting operation of the drum 236 in the extension direction. Furthermore, when the drum 236 pivots in the winding direction, the clutch mechanism 222 can decouple the shaft coupling member 214 from the drum 236 and couple the shaft coupling member 214 to the braking coupling member 218. Accordingly, when the drum 236 pivots in the extension direction, the shaft coupling member 214 and the drum 236 are not subject to the braking force of the braking member 216 and can pivot synchronously relative to the braking coupling member 218, making it easier to pull up the movable rail 104 and reducing friction between the components. When the drum 236 pivots in the winding direction, the braking force of the brake 216 can be applied to the shaft coupling 214 via the brake coupling 218 and the clutch mechanism 222, thus preventing the shaft coupling 214 from pivoting. The movable rail 104 can thereby maintain its position relative to the top rail 102. As described below, the clutch mechanism 222 may include two clutches 244, 246, which are movable relative to the brake coupling 218 and the drum 236 to selectively couple the shaft coupling 214 to one of the drum 236 and the brake coupling 218.

[0141] Cooperate Figure 3-5 , Figure 6 An exploded view of clutch mechanism 222 is shown. (See attached diagram.) Figure 3-6 The brake coupling member 218 and the clutch member 244 are disposed around the middle portion 248 of the shaft coupling member 214, and another clutch member 246 is disposed at an end 250 adjacent to one of the shaft coupling members 214. The clutch member 244 is coupled to the brake coupling member 218 and is movable relative to the shaft coupling member 214 and the brake coupling member 218 between a disengaged position and an engaged position, wherein the clutch member 244 is disengaged from the shaft coupling member 214 when it is in the disengaged position and engaged with the shaft coupling member 214 when it is in the engaged position. The clutch member 246 is coupled to the drum 236 and is movable relative to the shaft coupling member 214 and the drum 236 between a disengaged position and an engaged position, wherein the clutch member 246 is disengaged from the shaft coupling member 214 when it is in the disengaged position and engaged with the shaft coupling member 214 when it is in the engaged position.

[0142] The controlled movement of clutches 244 and 246 allows for switching the coupling state of shaft coupling member 214 relative to brake coupling member 218 and the drum 236 of lifting actuation module 220. Specifically, clutch mechanism 222 is configured such that rotation of drum 236 in the extension direction causes clutch member 246 to move to the engaged position and clutch member 244 to move to the disengaged position, thereby enabling drum 236, shaft coupling member 214, and clutch member 246 to pivot synchronously relative to brake coupling member 218. Furthermore, clutch mechanism 222 is configured such that rotation of drum 236 in the winding direction causes clutch member 246 to move to the disengaged position, and clutch member 244 can be switched to the engaged position when clutch member 246 is disengaged from shaft coupling member 214, thereby enabling the braking force of brake member 216 to prevent shaft coupling member 214 from pivoting.

[0143] Each of the clutches 244 and 246 may be a single-unit moving element. According to one example, the two clutches 244 and 246 may be configured to slide in opposite directions along the longitudinal axis 208 to selectively couple the shaft coupling 214 to one of the drum 236 and the brake coupling 218. For example, the clutch 244 may be annular, and the middle portion 248 of the shaft coupling 214 may pass through the clutch 244, thereby allowing the clutch 244 to slide relative to the shaft coupling 214 along the middle portion 248. The clutch 246 may similarly be annular and may be configured to slide along the shaft portion 228 of the fixed shaft 224.

[0144] See Figure 3-6 The clutch 244 is coupled to the brake coupling 218 and can move between an engaged and disengaged position when sliding contacting the brake coupling 218. According to one example, the clutch 244 is disposed about the middle portion 248 of the coupling 214 and is at least partially housed within the hollow interior 232 of the brake coupling 218. The connection between the brake coupling 218 and the clutch 244 allows limited movement of the clutch 244 relative to the brake coupling 218 between the disengaged and engaged positions. For this purpose, the clutch 244 can slide contact the brake coupling 218 within the hollow interior 232, and this sliding contact can be achieved by at least one inclined surface provided on the clutch 244 or the brake coupling 218. For example, the clutch 244 may have a notch 252 at a location offset from the longitudinal axis 208, and the inner wall 254 of the brake coupling 218, which at least partially defines its hollow interior 232, may have a protrusion 256, which is restricted to sliding within the notch 252. The notch 252 of the clutch 244 may have a ramp 258 extending between two stop surfaces 260A and 260B, and the protrusion 256 of the brake coupling 218 may have a ramp 262 extending between two stop surfaces 264A and 264B, and the ramp 258 may slidably contact the ramp 262.

[0145] With the structure described above, the clutch 244 can move relative to the brake coupling 218 between an engaged position and an disengaged position while the inclined surface 258 slides in contact with the inclined surface 262. Specifically, the clutch 244 can pivot about the longitudinal axis 208 and simultaneously slide along the longitudinal axis 208 to switch between the disengaged and engaged positions, while the protrusion 256 of the brake coupling 218 moves between the two stop surfaces 260A and 260B of the notch 252 during the movement of the clutch 244 relative to the brake coupling 218. When the clutch 244 is in the disengaged position, the shaft coupling 214 can pivot about the longitudinal axis 208, while the brake coupling 218 and the clutch 244 simultaneously remain static. When the clutch 244 is in the engaged position, the shaft coupling 214 can be pivotally coupled to the clutch 244, and the braking force applied by the brake 216 to the brake coupling 218 is suitable for preventing the shaft coupling 214 and the clutch 244 from pivoting through the contact between the stop surface 260A of the clutch 244 and the stop surface 264A of the brake coupling 218.

[0146] See Figure 3-6 The shaft coupling member 214 may include a plurality of protruding teeth 266 distributed around the longitudinal axis 208, while the clutch member 244 may include a plurality of protruding teeth 268 distributed around the longitudinal axis 208. The protruding teeth 268 engage with the protruding teeth 266 when the clutch member 244 is in the engaged position, and disengage from the protruding teeth 266 when the clutch member 244 is in the disengaged position. The protruding teeth 266 may be disposed at one end of the intermediate portion 248 along a first circumference of the shaft coupling member 214, while the protruding teeth 268 may be disposed in the clutch member 244 along a circular edge extending around the intermediate portion 248 and facing the protruding teeth 266 of the shaft coupling member 214. The protruding teeth 266 and 268 may be serrated. When clutch 244 is in the engaged position, the meshing action between cams 266 and 268 allows torque transmission only in direction R1 from shaft coupling 214 to clutch 244, and allows shaft coupling 214 to pivot relative to clutch 244 in a direction R2 opposite to direction R1. Direction R1 is the pivoting direction corresponding to the movement of stop surface 260A of clutch 244 toward stop surface 264A of brake coupling 218. The torque in direction R1 can be generated by the suspended load of movable rail 104. When clutch 244 is in the engaged position, the braking force of brake 216 can resist the torque in direction R1, thereby enabling movable rail 104 to maintain its position. When the shaft coupling member 214 pivots in the direction R2, the arrangement of the convex teeth 266 and 268 enables the shaft coupling member 214 to push the clutch member 244 and move the clutch member 244 away from the engagement position to the disengagement position.

[0147] See Figure 3-6The clutch 246 is coupled to the drum 236 of the lifting actuation module 220 and can move between an engaged position and a disengaged position when sliding contacting the drum 236. According to one embodiment, the clutch 246 is disposed about a shaft 228 and at least partially housed within the hollow interior of the drum 236. The clutch 246 can be coupled to the drum 236 by a sliding engagement, configured such that rotation of the drum 236 in the extension direction (i.e., the direction of extension of the operating member 238) causes the clutch 246 to slide toward the shaft coupling member 214 to the engaged position, and rotation of the drum 236 in the winding direction (i.e., the direction of winding the operating member 238) causes the clutch 246 to slide away from the shaft coupling member 214 to the disengaged position. The sliding engagement between the drum 236 and the clutch 246 can be achieved by at least one inclined surface provided on the clutch 246 or the drum 236.

[0148] Figure 7 and Figure 8 A partial sectional view illustrating an example sliding engagement between the roll 236 and the clutch 246. (See attached image.) Figure 3-7 The clutch 246 may have a ramp 270 radially away from the longitudinal axis 208, and the drum 236 may have a protrusion 272 that slides in contact with the ramp 270. The ramp 270 may be defined, for example, by one edge of a groove 270A provided on the circumferential surface of the clutch 246, while the protrusion 272 may be provided on the inner wall of the drum 236. It should be understood that the sliding engagement method may also involve providing the ramp 270 in the drum 236 and the protrusion 272 in the clutch 246. By means of this sliding engagement method, the clutch 246 can pivot about the longitudinal axis 208 in response to the pivoting operation of the drum 236 and simultaneously slide along the longitudinal axis 208 to transition between an engaged position and an disengaged position. The clutch 246 in Figure 7 In the disengaged position, Figure 8 The middle part is in the joining position.

[0149] like Figure 3 and Figure 4 As shown, clutch 246 can be connected to torsion spring 274, which is tightly disposed around shaft 228. Torsion spring 274 provides resistance to help clutch 246 maintain the disengaged position.

[0150] See Figure 3-7The shaft coupling member 214 may include a plurality of protruding teeth 276 distributed around the longitudinal axis 208 and axially spaced from the protruding teeth 266, while the clutch member 246 may include a plurality of protruding teeth 278 distributed around the longitudinal axis 208. The protruding teeth 278 engage with the protruding teeth 276 when the clutch member 246 is in the engaged position, and disengage from the protruding teeth 276 when the clutch member 246 is in the disengaged position. The protruding teeth 276 may be disposed along the second circumference of the shaft coupling member 214 at the other end of the intermediate portion 248, and the second circumference is smaller than the first circumference in the shaft coupling member 214 where the protruding teeth 266 are located. The protruding teeth 276 and 278 may be serrated. When the clutch 246 is in the engaged position, the meshing action between the convex teeth 276 and 278 allows torque transmission only in the direction R2 from the drum 236 and the clutch 246 to the shaft coupling 214, and allows the drum 236 and the clutch 246 to pivot relative to the shaft coupling 214 in the direction R1.

[0151] The following will refer to Figure 3-8 Example operation of clutch mechanism 222 is explained. Assuming clutch 244 is in the engaged position and clutch 246 is in the disengaged position, clutch mechanism 222 is currently coupled to shaft coupling member 214 and brake coupling member 218, and disengaged from drum 236. By pulling the operating member 238, drum 236 can pivot in the extension direction R2, causing clutch 246 to slide from the disengaged position to the engaged position in direction D1. This allows shaft coupling member 214 to pivot in direction R2 via clutch 246 and drum 236. Due to the arrangement of serrations 266 and 268, the linked pivoting of drum 236 and shaft coupling member 214 in direction R2 then causes clutch 244 to slide from the engaged position to the disengaged position in direction D2, opposite to direction D1, thereby disengaging shaft coupling member 214 from brake coupling member 218. Therefore, the clutch mechanism 222 can be converted into a state where the shaft coupling member 214 is decoupled from the brake coupling member 218 and coupled to the drum 236, allowing it to pivot in the direction R2. In this state, the braking force of the brake member 216 is no longer applied to the shaft coupling member 214. With the brake coupling member 218 and the clutch member 244 remaining static, the drum 236, the clutch member 246, and the shaft coupling member 214 can pivot synchronously to pull up the movable rail 104.

[0152] When the operating member 238 is released after extending from the drum 236, the spring 240 causes the drum 236 to pivot in the winding direction R1 to wind up the operating member 238. The rotation of the drum 236 in direction R1 causes the clutch 246 to slide from the engaged position to the disengaged position in direction D2, thereby disengaging the shaft coupling member 214 from the drum 236. The suspended load of the movable rail 104 then causes the shaft coupling member 214 to pivot in direction R1. Due to the sliding contact between the inclined surface 258 of the clutch 244 and the inclined surface 262 of the brake coupling member 218, and the frictional contact between the shaft coupling member 214 and the clutch 244, the rotation of the shaft coupling member 214 in direction R1 causes the clutch 244 to pivot and slide from the disengaged position to the engaged position in direction D1, thereby coupling the shaft coupling member 214 to the brake coupling member 218 via the clutch 244. Therefore, the clutch mechanism 222 can be converted into a state where the shaft coupling member 214 is coupled to the brake coupling member 218 and decoupled from the drum 236. In this state, the braking force of the brake member 216 can be applied to the shaft coupling member 214 to prevent it from pivoting in the direction R1, thereby maintaining the position of the movable rail 104 relative to the top rail 102, while the drum 236 simultaneously pivots in the direction R1 to wind up the operating member 238.

[0153] In the clutch mechanism 222, clutch member 244 can slide in direction D1 while clutch member 246 can slide in the opposite direction D2 to pivotally couple shaft coupling member 214 to brake coupling member 218 and simultaneously disengage shaft coupling member 214 from drum 236. Conversely, clutch member 244 can slide in direction D2 while clutch member 246 can slide in the opposite direction D1 to pivotally couple shaft coupling member 214 to drum 236 and simultaneously disengage shaft coupling member 214 from brake coupling member 218. Because shaft coupling member 214 couples only one of brake coupling member 218 and drum 236 at a time, adverse friction between shaft coupling member 214 and brake coupling member 218 can be prevented when shaft coupling member 214 and drum 236 pivot synchronously.

[0154] See Figure 1-59. The control module 206 may further include a brake release member 280 and a control rod 282. The brake release member 280 is connected to the brake member 216, and the control rod 282 is connected to the brake release member 280 via a transmission assembly 284. The brake member 216 may be configured as described above to frictionally contact the outer surface 234 of the brake coupling member 218, and the two ends 216A and 216B of the brake member 216 may be fixedly connected to the housing 210 and the brake release member 280, respectively. The brake release member 280 may be movable to cause the brake member 216 to release its frictional contact with the brake coupling member 218. According to one example, the brake release member 280 may be configured to pivot about the longitudinal axis 208. For example, the brake release member 280 may have a ring portion that is pivotally disposed about the middle portion 248 of the shaft coupling member 214. The brake release member 280 can thereby pivot relative to the shaft coupling member 214 to move the end 216B of the brake member 216, thereby causing the brake member 216 to expand and release its frictional contact with the brake coupling member 218.

[0155] The control rod 282, when operated, causes the brake release member 280 to move, thereby releasing the brake member 216 from its frictional contact with the brake coupling member 218. The control rod 282 can have any shape suitable for manual operation. For example, the control rod 282 can have an elongated shape extending along the longitudinal axis Y and be exposed for easy operation. The operating member 238 can extend through the hollow interior of the control rod 282, and one end of the operating member 238 can be fixed to the handle 286. The handle 286 is located adjacent to the end of the control rod 282 and can be pulled away from the control rod 282 to extend the operating member 238 from the reel 236. A guide member 287 can be provided in the housing 210 to guide the operating member 238.

[0156] The transmission assembly 284 allows the predetermined actuation displacement of the control rod 282 to be transmitted through the transmission assembly 284, causing the brake release member 280 to move, thereby releasing the brake member 216 from its frictional contact with the brake coupling member 218. Figure 3-5 , Figure 9 A schematic diagram showing some structural details of the transmission assembly 284. (See attached image.) Figure 3-59. The structure of the transmission assembly 284 is designed to accommodate the actuation displacement of the control rod 282. According to one example, the control rod 282 is pivotable about the longitudinal axis Y, causing the brake member 216 to release its frictional contact with the brake coupling member 218. The transmission assembly 284 may include two transmission members 288 and 290. Transmission members 288 and 290 may include gears. Transmission member 288 has a gear portion 288A and is pivotally connected to the control rod 282. Transmission member 290 has two gear portions 290A and 290B and is pivotally mounted in the housing 210. The gear portion 288A of transmission member 288 meshes with the gear portion 290A of transmission member 290, while the gear portion 290B of transmission member 290 meshes with the gear portion 280A provided on the brake release member 280. The two transmission components 288 and 290 can be configured to pivot about two perpendicular axes, with the pivot axis of transmission component 290 parallel to the longitudinal axis 208, and the pivot axis of transmission component 288 tilted at an angle relative to the vertical direction. With this configuration, rotation of the control rod 282 about the longitudinal axis Y can be transmitted to the brake release component 280 via the transmission assembly 284, causing the brake release component 280 to pivot and disengage the brake component 216 from its frictional contact with the brake coupling component 218. When the control rod 282 is released, the brake component 216 returns to its state of tightly engaging the brake coupling component 218.

[0157] See Figure 3 , 9 10. The control module 206 may include a biasing mechanism to assist the control rod 282 in returning to its initial position, wherein the initial position of the control rod 282 corresponds to the state of the brake member 216 engaging the brake coupling member 218. For example, one of the transmission members 288 and 290 may be coupled to a biasing spring, the spring force generated by which the biasing spring assists the control rod 282 in returning to its initial position when it is not operated by the user. According to one example, the transmission member 288 may have a toothed portion 288B that meshes with a rack 292, and the rack 292 may be connected to a biasing spring 294. When the control rod 282 is not subjected to external force, the biasing spring 294 may cause the rack 292 to slide, thereby pivoting the transmission member 288, which in turn restores the control rod 282 to its initial position and the brake member 216 to return to its engaged state.

[0158] Cooperate Figure 1-10 , Figure 11 and Figure 12 The illustration shows an operation diagram of unfolding the curtain 100, wherein the curtain 100 is equipped with the aforementioned actuation system 200. (See attached diagram) Figure 1-10Assume the initial state is that the movable rail 104 maintains its position relative to the top rail 102. In this initial state, the shaft coupling 214 is decoupled from the drum 236 and coupled to the brake coupling 218 via the clutch 244. Therefore, the tightening action applied by the brake 216 to the brake coupling 218 prevents the shaft coupling 214 from pivoting in the direction of lowering the movable rail 104.

[0159] See Figure 3-8 11. The user can rotate the control rod 282 around the longitudinal axis Y in the direction X1 to unfold the curtain 100. As mentioned above, the rotation of the control rod 282 causes the brake release member 280 to move, thereby releasing the brake member 216 from its frictional contact with the brake coupling member 218. Therefore, the shaft coupling member 214, the brake coupling member 218, and the clutch member 244 in the engaged position can pivot synchronously by gravity to lower the movable rail 104. When the shaft coupling member 214 pivots to lower the movable rail 104, the roller 236 and the clutch member 246 can remain substantially static.

[0160] See Figure 3-8 When the movable rail 104 reaches the desired position, the user can release the control rod 282, allowing it to pivot in the opposite direction (X2) around its longitudinal axis Y by the bias spring 294, thus returning to its initial position. Therefore, the brake 216 returns to its tightened state, and the movable rail 104 maintains the desired position relative to the top rail 102.

[0161] Cooperate Figure 1-10 , Figure 13 and Figure 14 The diagram illustrates the operation of a movable track 104 for drawing the curtain 100, wherein the curtain 100 is equipped with the aforementioned actuation system 200. (See attached diagram.) Figure 3-8 13. When the user wants to pull up the movable rail 104, they can use the handle 286 to pull down the operating member 238, thereby causing the drum 236 to pivot in the extension direction. Therefore, the clutch mechanism 222 can be converted to a state where the shaft coupling member 214 and the brake coupling member 218 are decoupled and coupled to the drum 236 through the clutch member 246, as described above. Accordingly, the shaft coupling member 214 and the drum 236 can pivot synchronously to pull up the movable rail 104.

[0162] See Figure 3-814. The user can release the handle 286 when the movable rail 104 reaches the desired position or when the operating member 238 extends to its maximum length. Then, the drum 236 can pivot by the action of the spring 240 to retract the operating member 238, and the clutch mechanism 222 can be switched to a state where the shaft coupling member 214 is decoupled from the drum 236 and coupled to the brake coupling member 218 through the clutch member 244, as described above. Accordingly, the tightening action of the brake member 216 on the brake coupling member 218 prevents the shaft coupling member 214 from pivoting, maintaining the movable rail 104 in its position, while the drum 236 can simultaneously pivot in the rewinding direction.

[0163] The actuation and release operation of the operating element 238 can be repeated multiple times until the movable rail 104 moves up to the desired position.

[0164] Figure 15 An exploded view is shown in which, according to another embodiment, the aforementioned transmission component 284 is replaced by a transmission component 302 in the control module 206. Figure 16 This shows an enlarged view of some structural details of the transmission assembly 302. (See attached image.) Figure 15 and Figure 16 The transmission assembly 302 is designed to cooperate with the sliding operation of the control rod 282 to cause the brake release member 280 to move, thereby releasing the brake member 216 from its frictional contact with the brake coupling member 218. Therefore, the user lowers the movable rail 104 by pulling down the control rod 282, rather than rotating the control rod 282 around the longitudinal axis Y.

[0165] See Figure 15 and Figure 16 The control rod 282 can be slidably connected to the housing 210 via a slider 304. For example, the slider 304 can be pivotally connected to the upper end of the control rod 282 and has a rod portion 306 slidably accommodated in a channel 308 provided within the housing 210. The pivot connection between the control rod 282 and the slider 304 allows the control rod 282 to tilt relative to the slider 304 for easy operation. The control rod 282 and the slider 304 can slide up and down synchronously relative to the housing 210.

[0166] The transmission assembly 302 may include three transmission members 310, 312, and 314. Transmission member 310 can move up and down synchronously with the control rod 282 and may have a toothed portion 316. According to one embodiment, transmission member 310 may be connected to a slider 304 and can slide up and down synchronously with the control rod 282 and the slider 304. The toothed portion 316 of transmission member 310 may extend substantially parallel to the sliding axis of slider 304.

[0167] The transmission components 312 and 314 may be two gears, pivotally assembled within the housing 210. Transmission component 312 may have a gear portion 312A, while transmission component 314 may have two spaced-apart gear portions 314A and 314B. The gear portion 312A of transmission component 312 may mesh with the toothed portion 316 of transmission component 310 and the gear portion 314A of transmission component 314, respectively. The gear portion 314B of transmission component 314 may mesh with the gear portion 280A of brake release component 280. With this configuration, the downward sliding of control rod 282 is transmitted to brake release component 280 via transmission assembly 302, causing brake release component 280 to pivot and disengage brake component 216 from frictional contact with brake coupling component 218. When control rod 282 is released, brake component 216 returns to its tightened state relative to brake coupling component 218.

[0168] See Figure 15 The transmission component 310 can be coupled to the bias spring 318. The spring force generated by the bias spring 318 can assist the control rod 282 in returning to its initial position when it is not operated by the user. According to one example, the transmission component 310 can be fixedly connected to the rod body 320, and the bias spring 318 can be arranged around the rod body 320. The two ends of the bias spring 318 can be connected to the shoulder 322 provided on one side wall 324 of the transmission component 310 and the housing 210, respectively. When the control rod 282 is not subjected to external force, the bias spring 318 can cause the transmission component 310 and the slider 304 to slide upward, thereby causing the control rod 282 to slide upward and return to its initial position, while the brake 216 can return to its tightened state.

[0169] Figure 15 The control module 206 shown, except for the transmission assembly 302, contains other components that can be connected to... Figure 3 The implementation examples are similar.

[0170] Cooperate Figure 15 and Figure 16 , Figure 17 and Figure 18 The illustration is shown as an unfolding feature. Figure 15 A schematic diagram illustrating the operation of the curtain 100 via the control module 206. (See attached diagram.) Figure 15-18The user can pull the control rod 282 downwards in direction V1 to unfold the curtain 100. As described above, sliding the control rod 282 downwards causes the brake release member 280 to move, releasing the brake member 216 from its frictional contact with the brake coupling member 218. Then, the shaft coupling member 214, the brake coupling member 218, and their coupled clutch member 244 can pivot synchronously under the action of gravity to lower the movable rail 104. When the shaft coupling member 214 pivots to lower the movable rail 104, the roller 236 and the clutch member 246 can remain substantially static. When the lowered movable rail 104 reaches the desired position, the user can release the control rod 282, allowing the control rod 282 to slide upwards in direction V2 under the action of the bias spring 318 to return to its initial position. Therefore, the brake member 216 can return to its tightened state, and the movable rail 104 can maintain the desired position relative to the top rail 102. To gather Figure 17 and Figure 18 When the curtain 100 is in place, the movable track 104 can be pulled up by pulling and releasing the handle 286 as described above.

[0171] Cooperate Figure 15 , Figure 19 A perspective view is shown in which a curtain tilting mechanism 330 is further provided in the actuation system 200 according to another embodiment. Figure 20 A perspective view of a portion of the curtain tilting mechanism 330 is shown. Figure 21 Draw Figure 19 An exploded view showing the structural details of the control module 206 included in the actuation system 200. (See attached diagram.) Figure 19-21 The slat tilting mechanism 330 is operable to adjust the angular position of the shading structure in the curtain and may include a ladder assembly 332 and a roller 334 connected to each other. The ladder assembly 332 is wound around the roller 334 and includes two strips 332A and 332B, which extend downward from the roller 334 and are respectively connected to the shading structure of the curtain. The strips 332A and 332B may include, but are not limited to, ropes, straps, etc. The roller 334 is pivotable to move the strips 332A and 332B vertically in opposite directions. According to one embodiment, the roller 334 may be pivotally supported by a drive shaft 202. The roller 334 may be configured to pivot relative to the drive shaft 202 to move the strips 332A and 332B vertically in opposite directions.

[0172] See Figure 19-21The control rod 282 can be connected to the brake release member 280 via the transmission assembly 302 as described above, and can also be connected to the curtain tilting mechanism 330 via another transmission assembly 340. The transmission assembly 340 may include a plurality of gears 342, 344, 346, 348, 350 and a drive shaft 352. The drive shaft 352 may extend parallel to the drive shaft 202 and be pivotally connected to the housing 210. Two gears 344 and 346 may be pivotally coupled to the drive shaft 352 at two axially spaced intervals, so that the drive shaft 352 and the gears 344 and 346 pivot synchronously. The gear 342 is pivotally disposed in the housing 210, pivotally coupled to the control rod 282, and meshes with the gear 344. According to one embodiment, the gear 342 may be pivotally coupled to the control rod 282 via a slider 304. Specifically, the rod portion 306 of the slider 304 may be provided through a through hole 342A in the gear 342. The shape and configuration of the rod 306 and the through hole 342A allow the slider 304 to slide synchronously up and down relative to the gear 342 and the housing 210 with the control rod 282. Furthermore, the gear 342 and the slider 304 can pivot synchronously relative to the housing 210 with the control rod 282 when the control rod 282 pivots about its longitudinal axis Y. The gear 350 is pivotally coupled to the wheel 334, enabling the wheel 334 and the gear 350 to pivot synchronously about the same axis. The gear 348 meshes with gears 346 and 350 respectively.

[0173] With the configuration described above, the wheel 334 of the slat tilting mechanism 330 can pivot about the drive shaft 202 and is connected to the control rod 282 via the transmission assembly 340. The rotation of the control rod 282 about its longitudinal axis Y can cause the drive shaft 352 to pivot via the transmission of gears 342 and 344, and then cause the wheel 334 to pivot about the drive shaft 202 via the transmission of gears 346, 348, and 350, thereby moving the two strips 332A and 332B in opposite directions. Therefore, the control rod 282 can pivot about its longitudinal axis Y to actuate the slat tilting mechanism 330, and as described above, it can slide vertically to cause the brake release member 280 to move, thereby releasing the brake member 216 from its frictional contact with the brake coupling member 218.

[0174] Based on the above description, it should be understood that multiple curtain tilting mechanisms 330 with the same structure can be provided in the curtain. Each curtain tilting mechanism 330 can also have a rotating wheel 334 pivotally supported by the drive shaft 202, and can be connected to the control rod 282 through corresponding gear sets including gears 346, 348, and 350.

[0175] Figure 19 The actuation system 200 shown, except for the curtain tilting mechanism 330 and the transmission assembly 340, has components similar to those in the embodiments described above. In particular, Figure 19 The control module 206 in the actuation system 200 shown can be connected to Figure 15The control module 206 shown is similar.

[0176] Figure 22 The illustration shows a configuration according to an embodiment of the present invention. Figure 19 A 3D diagram of the curtain 100 with the actuation system 200. Figure 23-28 Then draw Figure 22 The diagram below illustrates the operation of the curtain 100. (See attached diagram.) Figure 19-28 The curtain 100 may include a top rail 102, a movable rail 104, and a shading structure 106 disposed between the top rail 102 and the movable rail 104. As described above, the winding unit 204 assembled with the top rail 102 is connected to the movable rail 104 via a suspension member 110, allowing the movable rail 104 to be suspended from the top rail 102. The shading structure 106 may include a plurality of slats 116, which are suspended from the top rail 102 by a ladder assembly 332 of the slat tilting mechanism 330. Specifically, each of the slats 116 may be connected to two strips 332A and 332B of the ladder assembly 332, wherein the two strips 332A and 332B extend on the front and rear sides of the slat 116, respectively. Accordingly, the slat tilting mechanism 330 can be operated to adjust the angular position of the slats 116.

[0177] See Figure 19-24 The user can pull the control rod 282 downwards in direction V1 to unfold the curtain 100. As described above, sliding the control rod 282 downwards causes the brake release member 280 to move, releasing the brake member 216 from its frictional contact with the brake coupling member 218. Then, the shaft coupling member 214, the brake coupling member 218, and their coupled clutch member 244 can pivot synchronously under the action of gravity to lower the movable rail 104. When the shaft coupling member 214 pivots to lower the movable rail 104, the roller 236 and the clutch member 246 can remain substantially static. When the lowered movable rail 104 reaches the desired position, the user can release the control rod 282, allowing the control rod 282 to slide upwards in direction V2 under the action of the bias spring 318 to return to its initial position. Therefore, the brake member 216 can return to its tightened state, and the movable rail 104 can maintain the desired position relative to the top rail 102.

[0178] See Figure 19-22 25, 26. To adjust the angle of the curtain slat 116, the user can rotate the control rod 282 around the longitudinal axis Y, which, through the transmission assembly 340, actuates the curtain tilting mechanism 330. For example, when the control rod 282 pivots in direction S1, the curtain slat 116 tilts to one side (e.g., ...). Figure 25 As shown), when the slats 116 are pivoted in the opposite direction S2, they tilt towards the opposite side (as shown). Figure 26 (As shown).

[0179] See Figure 21 ,27 28. To close or close the curtains 100, pull the movable track 104 by pulling and releasing the handle 286 as described above.

[0180] The actuation system provided by this invention allows for the lowering and raising of a movable curtain track with relatively low force. The clutch mechanism incorporated into the actuation system reduces internal friction during operation, thus reducing component wear and extending service life, while also making the actuation system easy to operate. Furthermore, the actuation system is applicable to various curtain types, simplifying curtain manufacturing.

[0181] The above description is based on several different embodiments of the present invention, wherein each feature may be implemented individually or in different combinations. Therefore, the disclosure of embodiments of the present invention is a specific example illustrating the principles of the present invention and should not be construed as limiting the present invention to the disclosed embodiments. Furthermore, the foregoing description and accompanying drawings are merely illustrative of the present invention and are not intended to limit it. Variations or combinations of other elements are possible and do not depart from the spirit and scope of the present invention.

Claims

1. An actuation system for a curtain, characterized in that, include: A pivotal, movable track that allows the curtains to be raised and lowered. A connected braking element and a braking coupling element, the braking element being adapted to apply a braking force to the braking coupling element to prevent the braking coupling element from pivoting; The lifting actuation module includes a connected spool and an operating member, the spool being pivotable in a winding direction for winding the operating member and pivotable in an extension direction for extending the operating member; as well as A clutch mechanism includes two clutch members movable relative to the brake coupling member and the drum to selectively couple the shaft coupling member to one of the drum and the brake coupling member, wherein: when the shaft coupling member is decoupled from the brake coupling member and coupled to the drum, the drum and the shaft coupling member can pivot synchronously relative to the brake coupling member; when the shaft coupling member is coupled to the brake coupling member and decoupled from the drum, the braking force of the brake member is suitable to prevent the shaft coupling member from pivoting. When the drum and the shaft coupling member, which are coupled to each other, continuously pivot to drive the movable rail, the shaft coupling member is decoupled from the braking coupling member and the braking member.

2. The actuation system according to claim 1, characterized in that, The two clutches are configured to slide in opposite directions to selectively couple the shaft coupling to one of the drum and the brake coupling.

3. The actuation system according to claim 1, characterized in that, When the shaft coupling member is decoupled from the brake coupling member and coupled to the drum, one of the two clutches can pivot synchronously with the shaft coupling member and the drum, while the brake coupling member and the other of the two clutches remain static.

4. The actuation system according to claim 1, characterized in that, The braking coupling and one of the two clutches are disposed around the middle portion of the shaft coupling, and the other of the two clutches is disposed near one end of the shaft coupling.

5. The actuation system according to claim 1, characterized in that, The two clutch components include: A first clutch element, coupled to the brake coupling element, is movable relative to the brake coupling element between a first position and a second position, wherein the first clutch element is disengaged from the shaft coupling element when in the first position, and engaged with the shaft coupling element when in the second position; and The second clutch is coupled to the drum and is movable relative to the drum between a third position and a fourth position, wherein the second clutch is disengaged from the shaft coupling when it is in the third position and engaged with the shaft coupling when it is in the fourth position. Wherein: the rotation of the drum in the extension direction causes the second clutch to move to the fourth position and the first clutch to move to the first position, thereby enabling the drum, the shaft coupling member and the second clutch to pivot synchronously relative to the brake coupling member; and the rotation of the drum in the winding direction causes the second clutch to move to the third position, and the first clutch can be converted to the second position when the second clutch is in the third position, thereby making the braking force of the brake member suitable for preventing the shaft coupling member from pivoting.

6. The actuation system according to claim 5, characterized in that, The shaft coupling and the drum can pivot about the longitudinal axis, and the first clutch and the second clutch can slide along the longitudinal axis.

7. The actuation system according to claim 6, characterized in that, The shaft coupling includes a plurality of first protrusions distributed around the longitudinal axis and a plurality of second protrusions distributed around the longitudinal axis. The first clutch has a plurality of third protrusions, and the second clutch has a plurality of fourth protrusions. The plurality of third protrusions engage with the plurality of first protrusions when the first clutch is in the second position, and the plurality of fourth protrusions engage with the plurality of second protrusions when the second clutch is in the fourth position.

8. The actuation system according to claim 7, characterized in that, The plurality of first protruding teeth are arranged along the first circumference of the shaft coupling member, and the plurality of second protruding teeth are arranged along the second circumference of the shaft coupling member, wherein the second circumference is smaller than the first circumference.

9. The actuation system according to claim 7, characterized in that, The arrangement of the plurality of first teeth and the plurality of third teeth enables the rotation of the drum and the shaft coupling coupled by the second clutch to cause the first clutch to move from the second position to the first position.

10. The actuation system according to claim 7, characterized in that, The second clutch is coupled to the drum by a sliding engagement, wherein the sliding engagement is configured such that rotation of the drum in the extension direction causes the second clutch to slide toward the shaft coupling member to a fourth position, thereby engaging the plurality of fourth teeth with the plurality of second teeth, and rotation of the drum in the winding direction causes the second clutch to slide away from the shaft coupling member to a third position, thereby disengaging the plurality of fourth teeth from the plurality of second teeth.

11. The actuation system according to claim 5, characterized in that, The first clutch is movable between a first position and a second position when it is in sliding contact with the brake coupling.

12. The actuation system according to claim 11, characterized in that, The braking coupling has a hollow interior adapted to at least partially accommodate the first clutch, the first clutch slidingly contacting the braking coupling within the hollow interior via at least one inclined surface provided on the first clutch or the braking coupling.

13. The actuation system according to claim 12, characterized in that, The first clutch has a notch with a first inclined surface and a first stop surface. An inner wall of the brake coupling has a protrusion with a second inclined surface and a second stop surface. The first clutch can move relative to the brake coupling while the first inclined surface slides in contact with the second inclined surface. The braking force of the brake is used to prevent the shaft coupling from pivoting through the contact between the first stop surface and the second stop surface.

14. The actuation system according to claim 1, characterized in that, The lifting actuation module includes a spring connected to the drum, the spring being adapted to bias the drum to pivot in the winding direction.

15. The actuation system according to claim 1, characterized in that, The braking element is disposed around the braking coupling element and connected to the braking release element. The braking element applies braking force to the braking coupling element through frictional contact between itself and the braking coupling element, while the braking release element is movable to cause the braking element to release its frictional contact with the braking coupling element.

16. The actuation system according to claim 15, characterized in that, It also includes a control rod, which is connected to the brake release member via a transmission assembly. The control rod can be operated to move the brake release member and cause the brake member to release its frictional contact with the brake coupling member.

17. The actuation system according to claim 16, characterized in that, It also includes a slat tilting mechanism, which can be operated to adjust the angle position of the shading structure in the curtain. The control rod is connected to the slat tilting mechanism through a second transmission assembly. The control rod is slidable to cause the brake release member to move and release the brake member from its frictional contact with the brake coupling member. The control rod is also pivotable to actuate the slat tilting mechanism.

18. The actuation system according to claim 17, characterized in that, The shaft coupling is pivotally coupled to the drive shaft, and the slat tilting mechanism includes a rotating wheel and a ladder assembly connected to each other. The rotating wheel is pivotable about the drive shaft and connected to the control rod through the second transmission assembly.

19. A curtain, characterized in that, include: A top rail, a movable rail, and a shielding structure disposed between the top rail and the movable rail; A winding unit is installed on the top rail, and the winding unit is connected to the movable rail via a suspension member; as well as The actuation system according to any one of claims 1 to 16, wherein the shaft coupling member is pivotally coupled to the winding unit via a drive shaft, such that the shaft coupling member and the drive shaft can pivot synchronously to pull up and lower the movable rail.

20. A curtain, characterized in that, include: A top rail, a movable rail, and a shielding structure disposed between the top rail and the movable rail, the shielding structure comprising multiple slats; A winding unit is installed on the top rail, and the winding unit is connected to the movable rail via a suspension member; as well as According to the actuation system of claim 17 or 18, the shaft coupling member is pivotally coupled to the winding unit via a drive shaft, and the slat tilting mechanism is connected to the plurality of slats, thereby enabling the shaft coupling member and the drive shaft to pivot synchronously to pull up and lower the movable rail, and the slat tilting mechanism can be operated to adjust the angular position of the plurality of slats.

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