Curtain and actuation system thereof

Abstract

The present invention provides an actuation system for a window covering, comprising: a drive shaft, pivotable about a longitudinal axis thereof; a detent spring having an engaged state adapted to prevent pivoting of the drive shaft and a released state adapted to allow pivoting of the drive shaft; and a detent actuation mechanism coupled to the detent spring, the detent actuation mechanism comprising a toggle actuator movable between an initial state and an actuated state, and a position selector having a first holding position adapted to hold the detent spring in the engaged state and a second holding position adapted to hold the detent spring in the released state; wherein the detent actuation mechanism is configured to cause the position selector to transition from the first holding position to the second holding position by a back-and-forth movement of the toggle actuator between the initial state and the actuated state, and to cause the position selector to transition from the second holding position to the first holding position by another back-and-forth movement of the toggle actuator between the initial state and the actuated state.

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 and make the actuation system easy to operate with less force.

[0005] According to one embodiment, the actuation system includes: a drive shaft pivotable about its longitudinal axis; a brake spring having an engaged state adapted to prevent pivoting of the drive shaft and an unloaded state allowing pivoting of the drive shaft; and a brake actuation mechanism connected to the brake spring, the brake actuation mechanism including a switching actuator and a position selector, the switching actuator being movable between an initial state and an actuated state, the position selector having a first holding position adapted to hold the brake spring in the engaged state and a second holding position adapted to hold the brake spring in the unloaded state; wherein the brake actuation mechanism is configured to cause the position selector to change from the first holding position to the second holding position by reciprocating movement of the switching actuator between the initial state and the actuated state, and to cause the position selector to change from the second holding position to the first holding position by another reciprocating movement of the switching actuator between the initial state and the actuated state.

[0006] According to one embodiment, the position selector includes a spring coupling member connected to one end of the brake spring, the spring coupling member being pivotable about the longitudinal axis to a first angular position corresponding to a first holding position and a second angular position corresponding to a second holding position.

[0007] According to one embodiment, the position selector further includes: an anchoring portion; and a locking member movably connected to the spring coupling member and the anchoring portion; wherein the locking member is movable and engages with different portions of the anchoring portion to set a first holding position and a second holding position of the position selector.

[0008] According to one embodiment, the spring coupling is disposed in the housing, and the anchoring portion is fixed to the housing.

[0009] According to one embodiment, the engaging member is movably connected to the spring coupling member at an eccentric position on the longitudinal axis.

[0010] According to one embodiment, the anchoring portion includes a boss and a guide rail, the guide rail extending around the boss and defined between the boss and an outer side wall surrounding the boss, and the engaging member having a protrusion guided to slide along the guide rail.

[0011] According to one embodiment, as the spring coupling pivots about the longitudinal axis, the engaging member moves relative to the spring coupling along the guide rail.

[0012] According to one embodiment, when the position selector is in a first holding position, the protrusion of the engaging member engages with the recess in the outer side wall.

[0013] According to one embodiment, when the position selector is in the second holding position, the protrusion of the engaging member engages with the recess in the boss.

[0014] According to one embodiment, the position selector further includes a bias spring connected to the spring coupling member, the bias spring being adapted to cause the spring coupling member to pivot in a first direction toward engaging the position selector in a first holding position or a second holding position.

[0015] According to one embodiment, the brake actuation mechanism further includes an actuator linked to the switching actuator, wherein the movement of the switching actuator from an initial state to an actuated state causes the actuator to cause the spring coupling member to pivot in a second direction opposite to the first direction, and the engaging member moves relative to the spring coupling member and the anchoring portion as the spring coupling member pivots about the longitudinal axis to switch the position selector between a first holding position and a second holding position.

[0016] According to one embodiment, the engaging member is slidably engaged with the spring coupling member.

[0017] According to one embodiment, the brake actuation mechanism further includes a spring adapted to cause the switching actuator to move from an actuated state to an initial state.

[0018] According to one embodiment, the switching actuator can pivot between an initial state and an actuated state.

[0019] According to one embodiment, the switching actuator can slide between an initial state and an actuated state.

[0020] According to one embodiment, the switching actuator includes a bar.

[0021] According to one embodiment, the actuation system further includes a brake engagement member, wherein the brake spring is in frictional contact with the brake engagement member in the engaged state and is released from frictional contact with the brake engagement member in the disengaged state.

[0022] According to one embodiment, the actuation system further includes: a shaft coupling pivotally coupled to the drive shaft; an actuation module including a connected drum and an operating member, the drum being pivotable in a winding direction for winding the operating member and in an extension direction for extending the operating member; and a clutch mechanism configured to selectively couple the shaft coupling to one of the drum and the brake engagement member, wherein: when the shaft coupling is decoupled from the brake engagement member and coupled to the drum, the drum and the shaft coupling are pivotable synchronously relative to the brake engagement member; when the shaft coupling is coupled to the brake engagement member and decoupled from the drum, the engagement state of the brake spring is adapted to prevent the drive shaft from pivoting.

[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 aforementioned actuation system, wherein the drive shaft is pivotally coupled to the winding unit, and the drive shaft is pivotable to pull up and lower the movable rail. Attached Figure Description

[0024] Figure 1 A perspective view of a curtain provided according to an embodiment of the present invention is shown.

[0025] Figure 2 Draw Figure 1 A 3D diagram showing the movable track in the curtains moving down from the top track.

[0026] Figure 3 An exploded view of the control module in the actuation system for curtains is shown.

[0027] Figure 4 Draw Figure 3 A cross-sectional view of the control module.

[0028] Figure 5An exploded view of the clutch mechanism in the control module is shown.

[0029] Figure 6 and Figure 7 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.

[0030] Figure 8 Draw Figure 3 A schematic diagram showing the structural details of the connection between the brake spring and the spring coupling in the control module.

[0031] Figure 9 Draw Figure 3 A partially enlarged 3D view of the brake actuation mechanism in the control module.

[0032] Figure 10 A schematic diagram showing the connection between the actuator and the switching actuator in the brake actuation mechanism is shown.

[0033] Figure 11 A schematic diagram showing some structural details of the position selector included in the brake actuation mechanism.

[0034] Figure 12 This diagram illustrates the structural details of a portion of the position selector, including a protrusion of a locking element that is guided to slide along a guide rail of the anchoring part.

[0035] Figure 13A-15A The diagram illustrates the operation of the position selector changing from the first hold position to the second hold position.

[0036] Figure 13B-15B The diagram illustrates how the protrusion of the engaging member in the position selector moves to different positions along the guide rail of the anchoring part when the position selector changes from the first holding position to the second holding position.

[0037] Figure 16A and Figure 17A The diagram illustrates the operation of the position selector switching from the second hold position to the first hold position.

[0038] Figure 16B and Figure 17B The diagram illustrates how the protrusion of the engaging member in the position selector moves to different positions along the guide rail of the anchoring part when the position selector changes from the second holding position to the first holding position.

[0039] Figure 18 and Figure 19 The drawing is shown as an unfolding. Figure 1 A diagram illustrating the operation of the curtains.

[0040] Figure 20 and Figure 21 The drawing is shown as a pull-up. Figure 1 A diagram illustrating the operation of the movable track for the curtains.

[0041] Figure 22 An exploded view of a control module provided in an actuation system for curtains according to another embodiment is shown.

[0042] Figure 23 Draw Figure 22 A three-dimensional view of a portion of the control module, including actuators and position selectors.

[0043] Figure 24 Draw Figure 23 A side view of part of the structure.

[0044] Figure 25 The illustration is shown as an unfolding feature. Figure 22 The diagram shows the operation of the curtain control module.

[0045] List of reference numerals

[0046] 100: Curtains

[0047] 102: Top Rail

[0048] 104: Movable rail

[0049] 106: Shielding Structure

[0050] 110: Suspension components

[0051] 200: Actuation System

[0052] 202: Drive shaft

[0053] 204: Winding unit

[0054] 206: Control Module

[0055] 208: Vertical axis

[0056] 210: Outer shell

[0057] 210A: Inner cavity

[0058] 212A, 212B: Shell

[0059] 212C: Cover

[0060] 212D: Support

[0061] 214: Shaft mating parts

[0062] 216: Brake Spring

[0063] 216A, 216B: End caps

[0064] 218: Brake coupling

[0065] 220: Lifting Actuation Module

[0066] 222: Clutch mechanism

[0067] 224: Fixed shaft

[0068] 226: Bump

[0069] 228: Shaft

[0070] 230: Through hole

[0071] 232: Hollow interior

[0072] 234: Outer surface

[0073] 236: Roll

[0074] 238: Operating components

[0075] 240: Spring

[0076] 242: Inner cavity

[0077] 244, 246: Clutch components

[0078] 248: Middle section

[0079] 250: End

[0080] 252: Gap

[0081] 254: Inner wall

[0082] 256: Protrusion

[0083] 258: Incline

[0084] 260A, 260B: Stopping surface

[0085] 262: Incline

[0086] 264A, 264B: Stopping surfaces

[0087] 266, 268, 276, 278: Convex teeth

[0088] 270: Incline

[0089] 270A: Groove

[0090] 272: Protrusion

[0091] 274: Torsion Spring

[0092] 287: Guide Components

[0093] 302: Brake Actuation Mechanism

[0094] 304: Location Selector

[0095] 306: Switching Actuators

[0096] 308: Spring

[0097] 310: Spring coupling component

[0098] 312: Anchoring section

[0099] 314: Card assembly

[0100] 316: Bias Spring

[0101] 318: convex platform

[0102] 320: Guide rail

[0103] 322: Lateral wall

[0104] 324: Protrusion

[0105] 326: Radial extension

[0106] 328, 330: concave part

[0107] 332, 334: Bending section

[0108] 338: Handle

[0109] 340, 340': Actuator

[0110] 340R, 344R: Pivot axis

[0111] 342, 344: Transmission components

[0112] 342A, 344A: Gear section

[0113] 360: Slider

[0114] 362: Guide rod

[0115] 364: Seat

[0116] FO: Power

[0117] Y: Major axis

[0118] R1, R2, D1, D2, P1, P2, X1, X2, V1, V2: Direction. Detailed Implementation

[0119] 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 2The 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.

[0120] 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.

[0121] 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 one 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.

[0122] The shielding structure 106 is disposed between the top rail 102 and the movable rail 104, and can be any suitable structure that can extend and overlap 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 the displacement of the movable rail 104 away from or towards the top rail 102.

[0123] 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.

[0124] See Figure 1 and Figure 2 The 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.

[0125] Drive shaft 202 and winding unit 204 may be mounted in top rail 102. Drive shaft 202 is coupled to winding unit 204 and is pivotable about longitudinal axis 208 of drive shaft 202. Each winding unit 204 is connected to movable rail 104 via at least one suspension member 110, and can be operated to retract suspension member 110 to pull up movable rail 104 or extend suspension member 110 to lower 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, the other end of suspension member 110 being connected to movable rail 104, whereby the drum can pivot synchronously with drive shaft 202 to retract suspension member 110 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.

[0126] 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, thereby raising or lowering the movable rail 104. Figure 1 and Figure 2 , Figure 3 An exploded view of the structure of the control module 206 is shown. Figure 4 Then draw a cross-sectional view of the control module 206.

[0127] 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, 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.

[0128] See Figure 3 , 4 The control module 206 may include a shaft coupling 214, a brake spring 216, a brake engagement 218, a lifting actuation module 220, and a clutch mechanism 222, all of which are connected to the housing 210.

[0129] To facilitate the assembly of components, housing 210 may include a fixed shaft 224 having multiple segments of different sizes. According to one example, fixed shaft 224 may include a protrusion 226 fixed to bracket 212D, and a shaft portion 228 fixed to protrusion 226. Protrusion 226 and shaft portion 228 are generally coaxial about longitudinal axis 208. It should be understood that protrusion 226 and shaft portion 228 may also be single-piece components, which may be fastened to bracket 212D or integrally formed.

[0130] The shaft coupling 214 is at least partially received within the inner cavity 210A of the housing 210 and can extend outwardly from the housing 212B. According to one embodiment, the shaft coupling 214 can be a single component with an elongated shape. The shaft coupling 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 214.

[0131] Shaft coupling 214 is pivotally coupled to drive shaft 202, allowing drive shaft 202 and shaft coupling 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 214 opposite to fixed shaft 224. Furthermore, drive shaft 202 can be secured to shaft coupling 214 by fasteners (not shown). Accordingly, shaft coupling 214 can be pivotally coupled to winding unit 204 via drive shaft 202, allowing drive shaft 202 and shaft coupling 214 to pivot synchronously about longitudinal axis 208 to raise and lower movable rail 104.

[0132] The brake spring 216 has an engaged state suitable for preventing the drive shaft 202 from pivoting and an unengaged state allowing the drive shaft 202 to pivot. Specifically, in the engaged state, the brake spring 216 can apply a braking force suitable for preventing the brake engagement 218 from pivoting. According to one example, the brake spring 216 and the brake engagement 218 can be arranged about the longitudinal axis 208. For example, the brake engagement 218 can have a hollow interior 232 and be arranged about the middle section of the shaft coupling 214, such that the middle section of the shaft coupling 214 passes through the hollow interior 232 and maintains a gap with the brake engagement 218. Therefore, the shaft coupling 214 can pivot relative to the brake engagement 218 during operation.

[0133] A brake spring 216 is disposed around a brake engagement 218 and contacts the outer surface 234 of the brake engagement 218, enabling the brake spring 216 to apply a braking force to the brake engagement 218 to prevent the brake engagement 218 from pivoting about the longitudinal axis 208. For example, the outer surface 234 may be defined on a ring portion of the brake engagement 218, and the brake spring 216 may include a torsion spring surrounding the ring portion of the brake engagement 218 and configured to frictionally contact the outer surface 234. In the engaged state, the brake spring 216 can be tightened and apply a braking force to the brake engagement 218 through the frictional contact between the brake spring 216 and the outer surface 234 of the brake engagement 218. In the disengaged state, the brake spring 216 can expand and release the frictional contact between the brake spring 216 and the outer surface 234 of the brake engagement 218.

[0134] See Figure 3 , 4The 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 fixed to the drum 236. The operating member 238 may include, for example, but is not limited to, a rope, a belt, 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.

[0135] 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.

[0136] The clutch mechanism 222 is configured to selectively couple the shaft coupling 214 to one of the lifting actuation module 220 and the brake engagement 218. The clutch mechanism 222 couples the shaft coupling 214 to the drum 236 of the lifting actuation module 220 and decouples the shaft coupling 214 from the brake engagement 218 in response to the pivoting 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 214 from the drum 236 and couple the shaft coupling 214 to the brake engagement 218. Accordingly, when the drum 236 pivots in the extension direction, the shaft coupling 214 and the drum 236 are not subject to the braking force of the brake spring 216 and can pivot synchronously relative to the brake engagement 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 spring 216 in the engaged state can be applied to the shaft coupling 214 through the brake coupling 218 and the clutch mechanism 222, thus preventing the shaft coupling 214 and the drive shaft 202 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.

[0137] Cooperate Figure 3 , 4 , Figure 5 An exploded view of the clutch mechanism 222 is shown. (See attached diagram.) Figure 3-5 The brake engagement member 218 and the clutch member 244 are disposed around the middle portion 248 of the shaft engagement member 214, while another clutch member 246 is disposed adjacent to one end 250 of the shaft engagement member 214. The clutch member 244 is coupled to the brake engagement member 218 and is movable relative to the shaft engagement member 214 and the brake engagement member 218 between a disengaged position and an engaged position, wherein the clutch member 244 is disengaged from the shaft engagement member 214 when it is in the disengaged position and engaged with the shaft engagement 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 engagement member 214 and the drum 236 between a disengaged position and an engaged position, wherein the clutch member 246 is disengaged from the shaft engagement member 214 when it is in the disengaged position and engaged with the shaft engagement member 214 when it is in the engaged position.

[0138] The controlled movement of clutches 244 and 246 allows for switching the coupling state of shaft coupling 214 relative to brake engagement 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 246 to move to the engaged position and clutch 244 to move to the disengaged position, thereby enabling drum 236, shaft coupling 214, and clutch 246 to pivot synchronously relative to brake engagement 218. Furthermore, clutch mechanism 222 is configured such that rotation of drum 236 in the winding direction causes clutch 246 to move to the disengaged position, and clutch 244 can be switched to the engaged position when clutch 246 is disengaged from shaft coupling 214, thereby adapting the braking force of brake spring 216 to prevent shaft coupling 214 from pivoting.

[0139] Each of the clutches 244 and 246 may be a single-unit movable 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 engagement 218. For example, clutch 244 may be annular, with the middle portion 248 of shaft coupling 214 passing through it, thereby allowing clutch 244 to slide relative to shaft coupling 214 along the middle portion 248. Clutch 246 may similarly be annular and may be configured to slide along the shaft portion 228 of fixed shaft 224.

[0140] See Figure 3-5The clutch 244 is coupled to the brake engagement member 218 and can move between an engaged position and a disengaged position when it slides into the brake engagement member 218. According to one example, the clutch 244 is disposed about the middle portion 248 of the shaft coupling 214 and is at least partially housed within the hollow interior 232 of the brake engagement member 218. The connection between the brake engagement member 218 and the clutch 244 allows limited movement of the clutch 244 relative to the brake engagement member 218 between the disengaged and engaged positions. For this purpose, the clutch 244 can slide into the brake engagement member 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 engagement member 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 engagement 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 engagement 218 may have a ramp 262 extending between two stop surfaces 264A and 264B, and the ramp 258 may slidably contact the ramp 262.

[0141] With the structure described above, the clutch 244 can move relative to the brake engagement member 218 between an engaged position and an disengaged position, with the inclined surface 258 sliding 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 engagement member 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 engagement member 218. When the clutch 244 is in the disengaged position, the shaft engagement member 214 can pivot about the longitudinal axis 208, while the brake engagement member 218 and the clutch 244 simultaneously remain static. When the clutch 244 is in the engaged position, the shaft coupling 214 is pivotally coupled to the clutch 244, and the braking force applied by the brake spring 216 to the brake coupling 218 is adapted to prevent 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.

[0142] See Figure 3-5The shaft coupling 214 may include a plurality of protruding teeth 266 distributed around the longitudinal axis 208, while the clutch 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 244 is in the engaged position and disengage from the protruding teeth 266 when the clutch 244 is in the disengaged position. The protruding teeth 266 may be disposed along the first circumference of the shaft coupling 214 at one end of the intermediate portion 248, while the protruding teeth 268 may be disposed along the circular edge extending around the intermediate portion 248 in the clutch 244 and facing the protruding teeth 266 of the shaft coupling 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 engagement 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 spring 216 resists the torque in direction R1, thereby allowing movable rail 104 to maintain its position. When the shaft coupling 214 pivots in direction R2, the arrangement of the convex teeth 266 and 268 enables the shaft coupling 214 to push the clutch 244 away from the engagement position and move the clutch 244 away from the engagement position to the disengagement position.

[0143] See Figure 3-5 The 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 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 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.

[0144] Figure 6 and Figure 7 A partial sectional view illustrating an example sliding engagement between the roll 236 and the clutch 246. (See attached image.) Figure 3-7The 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 an 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 the ramp 270 being provided in the drum 236 and the protrusion 272 being provided 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 6 In the disengaged position, Figure 7 The middle part is in the joining position.

[0145] 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.

[0146] See Figure 3-7 The shaft coupling 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 246 may include a plurality of protruding teeth 278 distributed around the longitudinal axis 208. The protruding teeth 278 engage with the clutch 246 when it is in the engaged position and disengage from the clutch 246 when it is in the disengaged position. The protruding teeth 276 may be disposed along the second circumference of the shaft coupling 214 at the other end of the intermediate portion 248, and the second circumference is smaller than the first circumference in the shaft coupling 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 from the drum 236 and the clutch 246 to the shaft coupling 214 only in the direction R2, and allows the drum 236 and the clutch 246 to pivot relative to the shaft coupling 214 in the direction R1.

[0147] The following will refer to Figure 3-7Example 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 in a state corresponding to coupling of shaft coupling 214 and brake coupling 218 and disengagement from drum 236. By pulling actuating 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, allowing shaft coupling 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 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 214 from brake coupling 218. Therefore, the clutch mechanism 222 can be converted into a state where the shaft coupling 214 is decoupled from the brake engagement 218 and coupled to the drum 236, allowing it to pivot in the direction R2. In this state, the braking force of the brake spring 216, which is in the engaged state, is no longer applied to the shaft coupling 214. With the brake engagement 218 and the clutch 244 remaining static, the drum 236, the clutch 246, the shaft coupling 214, and the drive shaft 202 can pivot synchronously to pull up the movable rail 104.

[0148] 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 pivotally disengaging the shaft coupling 214 from the drum 236. The suspended load of the movable rail 104 then causes the shaft coupling 214 to pivot in direction R1. Due to the sliding contact between the ramp 258 of the clutch 244 and the ramp 262 of the brake engagement member 218, and the frictional contact between the shaft coupling 214 and the clutch 244, the rotation of the shaft coupling 214 in direction R1 causes the clutch 244 to pivot and slide in direction D1 from the disengaged position to the engaged position, thereby coupling the shaft coupling 214 to the brake engagement member 218 via the clutch 244. Therefore, the clutch mechanism 222 can be converted into a state where the shaft coupling 214 is coupled to the brake coupling 218 and decoupled from the drum 236. In this state, the braking force of the brake spring 216, which is in the engaged state, can be applied to the shaft coupling 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.

[0149] 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 engagement member 218 and simultaneously pivotally decouple 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 pivotally decouple shaft coupling member 214 from brake engagement member 218. Because shaft coupling member 214 couples only one of brake engagement member 218 and drum 236 at a time, unfavorable friction between shaft coupling member 214 and brake engagement member 218 can be prevented when shaft coupling member 214 and drum 236 pivot synchronously.

[0150] See Figure 3 , 8 -12, the control module 206 also includes a brake actuation mechanism 302 connected to the brake spring 216. The brake actuation mechanism 302 includes a position selector 304, a switching actuator 306, and a spring 308. The position selector 304 has a first holding position and a second holding position. The first holding position of the position selector 304 is adapted to hold the brake spring 216 in an engaged state, while the second holding position of the position selector 304 is adapted to hold the brake spring 216 in a disengaged state. The switching actuator 306 is movably connected to the housing 210 and is movable relative to the housing 210 between an initial state and an actuated state. The brake actuation mechanism 302 is configured to cause the position selector 304 to change from the first holding position to the second holding position by reciprocating movement of the switching actuator 306 between the initial state and the actuated state, and to cause the position selector 304 to change from the second holding position to the first holding position by another reciprocating movement of the switching actuator 306 between the initial state and the actuated state.

[0151] See Figure 3 , 8 -12, the position selector 304 may include a spring coupling 310, an anchoring part 312, a locking part 314 and an offset spring 316.

[0152] The brake spring 216 can be configured as described above to contact the outer surface 234 of the friction brake coupling 218, and the two ends 216A and 216B of the brake spring 216 can be connected to the housing 210 and the spring coupling 310 respectively.

[0153] A spring coupling 310 is disposed within the housing 210 and configured to be movable to cause the brake spring 216 to switch between an engaged state and a disengaged state. According to one embodiment, the spring coupling 310 may be configured to pivot about a longitudinal axis 208 to cause the brake spring 216 to switch between an engaged state and a disengaged state. For example, the spring coupling 310 may have a ring portion pivotally disposed about the middle portion 248 of the shaft coupling 214. Accordingly, the spring coupling 310 may pivot relative to the shaft coupling 214 about the longitudinal axis 208 to at least a first angular position corresponding to a first holding position and a second angular position corresponding to a second holding position. The rotation of the spring coupling 310 around the longitudinal axis 208 can drive the end 216B of the brake spring 216, thereby causing the end 216B to move in one direction and causing the brake spring 216 to expand and loosen its frictional contact with the brake engagement 218, or causing the end 216B to move in the opposite direction and causing the brake spring 216 to tighten its frictional contact with the brake engagement 218.

[0154] See Figure 3 , 8 -12, the anchoring part 312 is fixed, while the engaging part 314 is movably connected to the spring coupling part 310 and the anchoring part 312. The engaging part 314 can move and engage with different parts of the anchoring part 312 to set the first holding position and the second holding position of the position selector 304.

[0155] According to one embodiment, the anchoring portion 312 is fixed to the housing 210, for example, the anchoring portion 312 may be locked to the housing 210 or integrally formed with the housing 210. The anchoring portion 312 may be provided on the side wall of the housing 210 facing the spring coupling member 310.

[0156] See Figure 3 , 11 12. The anchoring portion 312 may include a boss 318 and a closed guide rail 320, with the guide rail 320 extending around the boss 318, wherein the guide rail 320 may be defined between the boss 318 and an outer wall 322 surrounding the boss 318. According to one embodiment, the boss 318 and the outer wall 322 may have a generally heart-shaped form. The boss 318 and the outer wall 322 may be fixed to the housing 210.

[0157] The engaging member 314 is movably connected to the spring coupling member 310 at an eccentric point on the longitudinal axis 208 and has a protrusion 324 that is guided to slide along the guide rail 320 of the anchoring portion 312. For example, the spring coupling member 310 may have a radial extension 326, and the engaging member 314 may slide against the spring coupling member 310, so that the engaging member 314 can slide along the radial extension 326 while the protrusion 324 is in sliding contact with the boss 318 and the outer side wall 322.

[0158] The engaging member 314 can be configured to move substantially parallel to the anchoring portion 312. As the spring coupling member 310 pivots about the longitudinal axis 208 to switch the position selector 304 between a first holding position and a second holding position, the engaging member 314 can move perpendicular to the longitudinal axis 208 and along the guide rail 320 relative to the spring coupling member 310 and the anchoring portion 312. When the position selector 304 is in the first holding position, the protrusion 324 of the engaging member 314 can engage with the recess 328 in the outer side wall 322; when the position selector 304 is in the second holding position, the protrusion 324 of the engaging member 314 can engage with the recess 330 in the boss 318.

[0159] See Figure 3 , 9 11. The bias spring 316 is connected to the housing 210 and the spring coupling member 310, and the spring force applied by it is suitable for causing the spring coupling member 310 to pivot about the longitudinal axis 208 in the direction that engages the position selector 304 in a first holding position or a second holding position. According to one embodiment, the bias spring 316 may be a helical spring, with its two ends connected to the housing 210 and the radial extension 326 of the spring coupling member 310, respectively.

[0160] Cooperate Figure 3 , 8 -12, Figure 13A-17B A schematic diagram illustrating exemplary operation of the position selector 304 is shown. See also... Figure 13A , 13B The position selector 304 is in the first holding position, which corresponds to the engaged state of the brake spring 216. When the position selector 304 is in the first holding position, the spring coupling member 310 is located at a first angular position, and the protrusion 324 of the engaging member 314 engages with the recess 328 of the outer side wall 322. The spring force of the bias spring 316 relative to the bias direction of the spring coupling member 310 can assist the protrusion 324 of the engaging member 314 in maintaining engagement with the recess 328. The first holding position of the position selector 304 holds the brake spring 216 in the engaged state.

[0161] See Figure 14A , 14B To change the brake spring 216 from the engaged state to the disengaged state, an actuating force FO can be applied to the spring coupling member 310, thereby causing the spring coupling member 310 to pivot in the direction P2. As the spring coupling member 310 pivots in the direction P2, the protrusion 324 of the engaging member 314 moves away from the recess 328 of the outer wall 322 and can move along the guide rail 320 in a state of sliding contact with the boss 318 and / or the outer wall 322, thereby causing the engaging member 314 to slide relative to the spring coupling member 310. The protrusion 324 of the engaging member 314 can slide until it reaches a bend 332 in the outer wall 322, such as Figure 14BAs shown, this prevents the spring coupling 310 from rotating further in the direction P2. At this point, the actuating force FO can be removed.

[0162] See Figure 15A , 15B When the actuating force FO is removed with the protrusion 324 of the engaging member 314 located at the bend 332 of the outer wall 322, the bias spring 316 causes the spring coupling member 310 to pivot in the direction P1 opposite to direction P2, causing the protrusion 324 of the engaging member 314 to move away from the bend 332 of the outer wall 322 and engage with the recess 330 of the boss 318. When the protrusion 324 engages with the recess 330, it prevents the spring coupling member 310 from rotating further in direction P1, thereby enabling the spring coupling member 310 to maintain the second angular position corresponding to the second holding position of the position selector 304. The second holding position of the position selector 304 keeps the brake spring 216 in the released state.

[0163] See Figure 16A , 16B To change the brake spring 216 from the released state to the engaged state, an actuating force FO can be applied to the spring coupling member 310, causing the spring coupling member 310 to pivot in the direction P2. As the spring coupling member 310 pivots in the direction P2, the protrusion 324 of the engaging member 314 moves away from the recess 330 of the boss 318 and slides into contact with the inclined surface of the outer wall 322 until the protrusion 324 reaches another bend 334 in the outer wall 322. When the protrusion 324 reaches the bend 334 of the outer wall 322, it prevents the spring coupling member 310 from rotating further in the direction P2. At this time, the actuating force FO can be removed.

[0164] See Figure 17A , 17B When the actuating force FO is removed with the protrusion 324 of the engaging member 314 located at the bend 334 of the outer wall 322, the bias spring 316 causes the spring coupling member 310 to pivot in the direction P1, causing the protrusion 324 of the engaging member 314 to move away from the bend 334 of the outer wall 322 and slide along the guide rail 320 until the protrusion 324 engages with the recess 328 of the outer wall 322. The position selector 304 can then be switched to a first holding position to hold the brake spring 216 in the engaged state.

[0165] See Figure 3 , 8-17B, the switching actuator 306 is movably connected to the housing 210 and is operably actuable to the position selector 304. The switching actuator 306 may have any structure suitable for manual operation. For example, the switching actuator 306 may include a bar extending along its long axis Y and exposed for easy operation. An operating member 238 may extend through the hollow interior of the bar of the switching actuator 306, and one end of the operating member 238 may be fixed to a handle 338. The handle 338 is located adjacent to the end of the switching actuator 306 and can be pulled away from the switching actuator 306 to extend the operating member 238 from the drum 236. A guide 287 may be provided in the housing 210 to guide the operating member 238.

[0166] See Figure 3 , 9 -12, 14A, 16A, To facilitate actuation of the position selector 304, the brake actuation mechanism 302 may include an actuator 340. The actuator 340 is linked to the switching actuator 306 and can be operated to apply or remove an actuation force FO to the spring coupling member 310. Movement of the switching actuator 306 from its initial state to its actuated state drives the actuator 340 toward the spring coupling member 310, thereby bringing the actuator 340 into contact with the spring coupling member 310 and applying the actuation force FO, thereby causing the spring coupling member 310 to pivot in direction P2 against the spring force of the bias spring 316. Conversely, movement of the switching actuator 306 from its actuated state to its initial state drives the actuator 340 away from the spring coupling member 310 to remove the actuation force FO.

[0167] According to one embodiment, the connection between the switching actuator 306 and the housing 210 allows the switching actuator 306 to pivot relative to the housing 210 about its long axis Y, while the actuator 340 is movably connected to the switching actuator 306 via a plurality of transmission elements. The actuator 340 may be pivotally connected to the housing 210 by a pivot axis 340R, wherein the pivot axis 340R may be parallel to the longitudinal axis 208. The actuator 340 is, for example, a lever, and may contact the spring coupling member 310 at a radial extension 326.

[0168] The actuator 340 is movably connected to the switching actuator 306 via two transmission members 342 and 344. Transmission member 342 has a gear portion 342A and is pivotally locked to the actuator 340, allowing it to pivot synchronously about a pivot axis 340R. Transmission member 344 is pivotally connected to the housing 210 via a pivot axis 344R, has a gear portion 344A that meshes with the gear portion 342A of transmission member 342, and is pivotally connected to the switching actuator 306. According to one embodiment, the pivot axes 340R and 344R are perpendicular to each other, and the gear portions 342A and 344A are bevel gears. The pivotal connection between transmission member 344 and the switching actuator 306 allows the switching actuator 306 to change its tilt angle, making the switching actuator 306 easier to operate.

[0169] With the above configuration, the rotation of the switching actuator 306 about the major axis Y can drive the actuator 340 to pivot about the pivot axis 340R toward or away from the spring coupler 310. Specifically, the rotation of the switching actuator 306 from the initial state to the actuated state causes the actuator 340 to pivot and apply an actuating force FO (e.g., ...) to the radial extension 326 of the spring coupler 310. Figure 14A (or as shown in 16A), thereby causing the spring coupling 310 to pivot in direction P2 against the spring force of the bias spring 316. Conversely, the rotation of the switching actuator 306 from the actuated state to the initial state is linked to the rotation of the actuator 340 away from the radial extension 326 of the spring coupling 310 in order to remove the actuation force FO.

[0170] See Figure 3 , 9 -17B, Spring 308 is configured to move Switching Actuator 306 from an actuated state to an initial state, thereby assisting in the removal of actuation force FO. According to one embodiment, both ends of Spring 308 can be connected to Housing 210 and Actuator 340, respectively. The spring force of Spring 308 is adapted to cause Actuator 340 to pivot away from the radial extension 326 of Spring Coupler 310, thereby causing Switching Actuator 306 to move from an actuated state to an initial state.

[0171] Cooperate Figure 1-17B , Figure 18 and Figure 19 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 , 3 -12, 13A, 13B, assuming the movable rail 104 initially 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 engagement 218 via the clutch 244, with the brake spring 216 engaged. The tightening action of the brake spring 216 on the brake engagement 218 prevents the shaft coupling 214 and the drive shaft 202 from pivoting in the direction of lowering the movable rail 104. Furthermore, the position selector 304 is in a first holding position, holding the brake spring 216 in the engaged state.

[0172] See Figure 3-12To unfold the curtain 100, the user can pivot the switching actuator 306 around its long axis Y from the initial state to the activated state in direction X1. Then, the user releases the switching actuator 306, allowing the spring 308 to cause the switching actuator 306 to pivot from the activated state to the initial state in the opposite direction X2. As described above, the reciprocating movement of the switching actuator 306 between the initial and activated states actuates the position selector 304, causing the position selector 304 to change from a first holding position to a second holding position. This, in turn, causes the brake spring 216 to change from an engaged state to a released state, releasing its frictional contact with the brake engagement member 218. Therefore, the drive shaft 202, shaft coupling member 214, brake engagement member 218, and clutch member 244 in the engaged position can pivot synchronously relative to the brake spring 216 by gravity to lower the movable rail 104. While the shaft coupling 214 and the drive shaft 202 are continuously pivoting to lower the movable rail 104, the drum 236 and the clutch 246 can remain substantially static.

[0173] See Figure 3-12 When the movable rail 104, 16A-16B, 17A-17B, and 19, reaches the desired position, the user can repeat the same operation to pivot the switching actuator 306 about the long axis Y from the initial state in direction X1 to the actuated state. Then, the user releases the switching actuator 306, allowing the spring 308 to cause the switching actuator 306 to pivot from the actuated state to the initial state in the opposite direction X2. The reciprocating movement of the switching actuator 306 between the initial state and the actuated state actuates the position selector 304 again, causing the position selector 304 to change from the second holding position to the first holding position, thereby changing the brake spring 216 from the released state to the engaged state. Accordingly, the movable rail 104 can maintain the desired position relative to the top rail 102.

[0174] Cooperate Figure 3-8 , Figure 20 and Figure 21 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 When the user wants to pull up the movable rail 104, the operating member 238 can be pulled down using the handle 338 while the switching actuator 306 remains in its initial state, thereby causing the drum 236 to pivot in the extension direction. Therefore, the clutch mechanism 222 can be switched to a state where the shaft coupling 214 is decoupled from the brake coupling 218 and coupled to the drum 236 via the clutch member 246, as described above. Accordingly, the drive shaft 202, shaft coupling 214, and drum 236 can pivot synchronously to pull up the movable rail 104, while the brake spring 216 remains engaged.

[0175] See Figure 3-821. The user can release the handle 338 when the movable rail 104 reaches the desired position or when the operating member 238 is extended 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 214 is decoupled from the drum 236 and coupled to the brake engagement 218 through the clutch 244, as described above. Accordingly, the tightening action of the brake spring 216 on the brake engagement 218 prevents the shaft coupling 214 and the drive shaft 202 from pivoting, maintaining the movable rail 104 in its position, while the drum 236 can simultaneously pivot in the rewinding direction.

[0176] 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. During the operation of pulling up the movable rail 104, the switching actuator 306 can remain in the initial state.

[0177] Figure 22 An exploded view is shown in which, according to another embodiment, the aforementioned actuator 340 is replaced by an actuator 340' in the control module 206, and Figure 23 and Figure 24 Draw Figure 22 Enlarged perspective view and side view of some structural details of the control module 206, including actuator 340' and position selector 304. Figure 22-24 In the embodiments, the switching actuator 306 is configured to slide vertically relative to the housing 210 between the initial state and the actuated state, rather than pivoting about the long axis Y, so as to actuate the position selector 304.

[0178] See Figure 22-24 The switching actuator 306 can be slidably connected to the housing 210 via a slider 360. For example, the slider 360 can be fixed to the upper end of the switching actuator 306 and slidably accommodated in a channel provided within the housing 210. The switching actuator 306 and the slider 360 can slide up and down synchronously relative to the housing 210.

[0179] Actuator 340' may be fixedly connected to and adjacent to switching actuator 306 and slider 360. Actuator 340' may have a hook portion and may contact spring coupling member 310 at radial extension 326. Since switching actuator 306 is fixedly connected to actuator 340', transmission members 342 and 344 in the aforementioned embodiment may be omitted.

[0180] As in the aforementioned embodiments, the actuator 340' can be connected to the spring 308, the spring force of which is adapted to cause the actuator 340' to move away from the radial extension 326 of the spring coupling member 310 and cause the switching actuator 306 to move from the actuated state to the initial state. According to one embodiment, the housing 210 can be fixed to the guide rod 362 via the bracket 364, the actuator 340' can be configured to slide along the guide rod 362, the spring 308 can be arranged around the guide rod 362, and the opposite ends of the spring 308 are respectively connected to the actuator 340' and the bracket 364.

[0181] See Figure 22-24 The downward sliding of the switching actuator 306 from the initial state to the actuated state drives the actuator 340' to slide downward, applying an actuating force FO to the radial extension 326 of the spring coupling member 310, thereby causing the spring coupling member 310 to pivot against the spring force of the bias spring 316. Conversely, the upward sliding of the switching actuator 306 from the actuated state to the initial state is linked to the sliding of the actuator 340' away from the radial extension 326 of the spring coupling member 310 to facilitate the removal of the actuating force FO. Therefore, Figure 22-24 The switching actuator 306 and actuator 340' shown have the same actuation function as the switching actuator 306 and actuator 340 in the aforementioned embodiment.

[0182] Figure 22 The control module 206 shown, except for the actuator 340', contains other components that can be connected to... Figure 3 The embodiments have similar structures and operations.

[0183] Cooperate Figure 22-24 , Figure 25 The illustration is shown as an unfolding feature. Figure 22 The diagram shows the operation of the curtain 100 via the control module 206. (See attached diagram.) Figure 22-25 To open the curtain 100, the user can pull the switching actuator 306 downwards in direction V1 from the initial state to the activated state, and then release the switching actuator 306, allowing the spring 308 to cause the switching actuator 306 to slide upwards in the opposite direction V2 from the activated state back to the initial state. As described above, the reciprocating movement of the switching actuator 306 between the initial state and the activated state actuates the position selector 304, causing the position selector 304 to change from the first holding position to the second holding position, thereby causing the brake spring 216 to change from the engaged state to the released state, releasing its frictional contact with the brake engagement member 218. Therefore, the drive shaft 202, shaft coupling member 214, brake engagement member 218, and clutch member 244 in the engaged position can pivot synchronously relative to the brake spring 216 by the action of gravity to lower the movable rail 104.

[0184] When the movable rail 104 reaches the desired position, the user can repeat the same operation by pulling the switching actuator 306 downwards in direction V1 from the initial state to the activated state, and then releasing the switching actuator 306, allowing the spring 308 to cause the switching actuator 306 to slide upwards in the opposite direction V2 from the activated state back to the initial state. The back-and-forth movement of the switching actuator 306 between the initial state and the activated state can re-activate the position selector 304, causing the position selector 304 to switch from the second holding position to the first holding position, thereby causing the brake spring 216 to switch from the released state to the engaged state. Accordingly, the movable rail 104 can maintain the desired position relative to the top rail 102.

[0185] To gather Figure 25 When the curtain 100 is in place, the movable track 104 can be pulled up by pulling and releasing the handle 338 as described above.

[0186] The actuation system of this invention provides a movable track for easily lowering and raising curtains with relatively little force. Furthermore, the actuation system is applicable to different types of curtains, which helps simplify curtain manufacturing.

[0187] 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: The drive shaft can pivot about its longitudinal axis; The brake spring has an engaged state suitable for preventing the drive shaft from pivoting and an unloaded state suitable for allowing the drive shaft to pivot. as well as A brake actuation mechanism is connected to the brake spring. The brake actuation mechanism includes a switching actuator and a position selector. The switching actuator is movable between an initial state and an actuated state. The position selector has a first holding position adapted to hold the brake spring in an engaged state and a second holding position adapted to hold the brake spring in an unengaged state. The brake actuation mechanism is configured to cause the position selector to change from a first holding position to a second holding position by reciprocating movement of the switching actuator between an initial state and an actuated state, and to cause the position selector to change from a second holding position to a first holding position by another reciprocating movement of the switching actuator between the initial state and the actuated state.

2. The actuation system according to claim 1, characterized in that, The position selector includes a spring coupling member connected to one end of the brake spring. The spring coupling member is pivotable about the longitudinal axis to a first angular position corresponding to the first holding position and a second angular position corresponding to the second holding position.

3. The actuation system according to claim 2, characterized in that, The location selector also includes: Anchoring part; and The engaging component is movably connected to the spring coupling component and the anchoring part; The engaging member is movable and engages with different parts of the anchoring portion to set a first holding position and a second holding position of the position selector.

4. The actuation system according to claim 3, characterized in that, The spring coupling is disposed in the housing, and the anchoring part is fixed to the housing.

5. The actuation system according to claim 3, characterized in that, The engaging member is movably connected to the spring coupling member at an eccentric point on the longitudinal axis.

6. The actuation system according to claim 3, characterized in that, The anchoring portion includes a boss and a guide rail, the guide rail extending around the boss and defined between the boss and an outer side wall surrounding the boss, and the engaging member having a protrusion that is guided to slide along the guide rail.

7. The actuation system according to claim 6, characterized in that, As the spring coupling pivots about the longitudinal axis, the engaging member moves relative to the spring coupling along the guide rail.

8. The actuation system according to claim 6, characterized in that, When the position selector is in the first holding position, the protrusion of the engaging member engages with the recess in the outer side wall.

9. The actuation system according to claim 6, characterized in that, When the position selector is in the second holding position, the protrusion of the engaging member engages with the recess in the boss.

10. The actuation system according to claim 3, characterized in that, The position selector further includes a bias spring connected to the spring coupling member, the bias spring being adapted to cause the spring coupling member to pivot in a first direction toward engaging the position selector in a first holding position or a second holding position.

11. The actuation system according to claim 10, characterized in that, The brake actuation mechanism further includes an actuator linked to the switching actuator. The movement of the switching actuator from the initial state to the actuated state causes the actuator to cause the spring coupling to pivot in a second direction opposite to the first direction. As the spring coupling pivots about the longitudinal axis to switch the position selector between a first holding position and a second holding position, the engaging member moves relative to the spring coupling and the anchoring portion.

12. The actuation system according to claim 11, characterized in that, The engaging member slides with the spring coupling member.

13. The actuation system according to claim 11, characterized in that, The brake actuation mechanism further includes a spring adapted to move the switching actuator from the actuated state to the initial state.

14. The actuation system according to claim 11, characterized in that, The switching actuator can pivot between an initial state and an actuated state.

15. The actuation system according to claim 11, characterized in that, The switching actuator can slide between an initial state and an actuated state.

16. The actuation system according to claim 1, characterized in that, The switching actuator includes a bar.

17. The actuation system according to claim 1, characterized in that, It also includes a brake engagement member, wherein the brake spring is in frictional contact with the brake engagement member in the engaged state, and is released from frictional contact with the brake engagement member in the released state.

18. The actuation system according to claim 17, characterized in that, Also includes: A shaft coupling component is pivotally coupled to the drive shaft; 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 is configured to selectively couple the shaft coupling to one of the drum and the brake engagement, wherein: when the shaft coupling is decoupled from the brake engagement and coupled to the drum, the drum and the shaft coupling can pivot synchronously relative to the brake engagement; When the shaft coupling is coupled to the brake coupling and decoupled from the drum, the engagement state of the brake spring is adapted to prevent the drive shaft from pivoting.

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 18, wherein the drive shaft is pivotally coupled to the winding unit, and the drive shaft is pivotable to pull up and lower the movable rail.

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