Curtain and curtain operating mechanism

Abstract

To provide a curtain operating mechanism that eliminates operational difficulties and complexity, and prevents malfunctions.SOLUTION: A curtain operating mechanism 100 comprises: a connecting member 2 for driving that is fixedly connected to a curtain reel; a base 1; a torque conversion mechanism 3; a driving member 5; a driven member 4; a turning cord 140; and a lifting cord 160. By rotating the driving member 5, the driven member 4 is simultaneously moved, causing both to travel along an axial direction of the reel. When the lifting cord 160 receives force and rotates the driven member 4 relative to the driving member 5, the driven member 4 directly rotates the connecting member 2 for driving according to its own position, or rotates the connecting member 2 for driving via the torque conversion mechanism 3, thereby outputting positive or negative rotational torque to the reel. This controls the opening and closing of the curtain.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a curtain and a curtain operating mechanism thereof, and more particularly to a curtain and a curtain operating mechanism thereof which are easy to operate, unlikely to malfunction, have a simple structure, and can be used safely. [Background technology]

[0002] Curtains are often used in building openings, such as windows and doors, to regulate light and enhance privacy. Curtains, which generally adjust the size of the light-blocking area up or down, can be divided into two types: corded curtains and cordless curtains, depending on how they are operated. Corded curtains are typically controlled by a circular control cord, allowing the user to raise or lower the curtain's light-blocking area by pulling down on either side of the control cord. However, children playing with the curtains may slip their heads through the control cord, potentially wrapping the cord around their neck and causing an unexpected injury. To prevent this risk to children, some commercially available corded curtains have a single control cord, allowing the user to switch the curtain from raising the light-blocking area to lowering the light-blocking area, or vice versa, by rotating a curtain controller attached to the upper beam or pulling the cord at a specific angle.

[0003] However, the upper beam of a curtain is often quite high, making it difficult for shorter users to reach the curtain controller attached to the upper beam. Furthermore, curtain movements involve at least two different directions: folding and unfolding. For the curtain controller to function, it must be connected to a switching mechanism within the upper beam. However, this switching mechanism is often quite large, limiting the overall appearance of the curtain. Existing curtains use a single hanging cord to perform different functions by changing the angle at which it is pulled (for example, pulling the control cord diagonally switches the control mode, while pulling it straight raises or lowers the shading section according to the current control mode), which can lead to difficulty and complexity in operation. If users do not know the appropriate angle at which to pull the hanging cord, malfunctions are likely to occur. Furthermore, even with a single hanging cord, as long as a certain length of the control cord is exposed outside the upper beam, a child's neck may become entangled in the cord, resulting in an unexpected accident. Summary of the Invention [Problem to be solved by the invention]

[0004] In view of the above-mentioned problems of the prior art, the present invention provides a curtain and a curtain operating mechanism thereof that allows a user to operate two separate operating members corresponding to different functions, thereby reducing confusion and errors during operation and further solving the problem of conventional corded curtains that provide multiple operating modes simultaneously on a single hanging cord, making operation complicated and prone to errors. At the same time, the curtain and curtain operating mechanism of the present invention also solves the problems of conventional curtain controllers being difficult to reach adjacent to the upper beam, the large switching mechanism connected to it and located within the upper beam, and the safety risk posed to children by the looped control cord. [Means for solving the problem]

[0005] In accordance with the objectives of the present invention, there is provided a curtain and a curtain operating mechanism thereof. The curtain comprises a reel and the curtain operating mechanism. The curtain operating mechanism comprises a drive connecting member, a base, a torque conversion mechanism, a driven member, a drive member, a first transmission member, and a second transmission member. The drive connecting member is fixedly connected to one end of the curtain reel so that the reel can rotate together with the drive connecting member. The base comprises a plurality of first guide structures, preferably guide rails, and preferably the first transmission member is a deflection cord and the second transmission member is a lifting cord.

[0006] The torque conversion mechanism has an input section and an output section, and the output section is operatively connected to the drive connection member. When the input section of the torque conversion mechanism is driven to rotate, the output section rotates in the opposite direction to the input section, and the output section rotates the drive connection member in the same direction. The driven member is rotatably mounted within the base in the axial direction of the reel, and the drive member includes an annular body and a plurality of second guide structures, preferably each of the second guide structures being a protrusion. The annular body surrounds the driven member and is connected to the driven member in the axial direction of the reel so that the driven member can move synchronously with the drive member along the axial direction of the reel, and the annular body and the driven member can rotate relative to each other about the axial direction of the reel when individually subjected to forces.

[0007] The second guide structures are provided on the outer peripheral surface of the annular body, respectively coupled to the first guide structures of the base, and are movable relative to the corresponding first guide structures in response to rotation of the annular body between a first position and a second position, the second position being farther from the reel than the first position. When the drive member rotates to move each of the second guide structures from the first position to the second position relative to the corresponding first guide structure, the drive member is synchronously guided to move along the reel axial direction from a third position to a fourth position farther from the reel than the third position, and moves the driven member to the input portion connected to the torque conversion mechanism. Conversely, when the drive member rotates to move each of the second guide structures from the second position to the first position relative to the corresponding first guide structure, the drive member is synchronously guided to move along the reel axial direction from the fourth position to the third position, and moves the driven member until it connects to the drive connection member.

[0008] One end of the first transmission member is connected to the drive member, and the other end extends from the base and receives force to drive and rotate the drive member. When the drive member rotates, each of the second guide structures moves from one of the first position and the second position to the other relative to the corresponding first guide structure, synchronously guiding the drive member to move appropriately along the axial direction of the reel. One end of the second transmission member is connected to the driven member, and the other end extends from the base and receives force to drive and rotate the driven member. When the drive member is in the third position and the driven member rotates, the driven member drives and rotates the connected drive connection member, thereby outputting positive rotational torque to the reel. In contrast, when the drive member is positioned at the fourth position and the driven member is rotated, the driven member drives and rotates the input part of the connected torque conversion mechanism, thereby rotating the output part of the torque conversion mechanism in the opposite direction to the input part, and outputs negative rotational torque to the reel via the drive connection member.

[0009] In another embodiment of the present invention, the first guide structure is a protrusion and the second guide structure is a guide rail.

[0010] In one embodiment of the present invention, the curtain operating mechanism further includes a locking mechanism. The locking mechanism is provided within the base and positions the driving member at either the third position or the fourth position. The locking mechanism includes a moving member, a locking lever, and a return member. The moving member has a connecting end and a moving end located opposite to each other, the connecting end being connected to the driving member, and the moving end of the moving member is provided with a circulating groove. When the one end of the first transmission member extending from the base receives a force and rotates the driving member, the driving member moves the moving member, thereby moving the moving end of the moving member in a first direction. One end of the locking lever is fixed to the base, and the other end is inserted into the circulating groove. The return member is provided between the position stop structure of the base and the moving member and applies an elastic force to the moving member in a direction opposite to the first direction. When the end of the first transmission member extending from the base receives a force to rotate the drive member, and then the first transmission member no longer receives the force, the moving end of the movable member moves in the direction opposite to the first direction under the action of the elastic force until the lock lever engages with the circulation groove, at which time the movable member is stationary and the lock lever is located at either a positive rotation position or a negative rotation position in the circulation groove. When the lock lever is located at the positive rotation position in the circulation groove, the drive member is positioned at the third position. When the lock lever is located at the negative rotation position in the circulation groove, the drive member is positioned at the fourth position.

[0011] In another embodiment of the present invention, the locking mechanism includes a moving member, a groove body, a lock lever, and a return member. The moving member has a connection end and a moving end located opposite to each other, and the connection end is connected to the drive member. When the end of the first transmission member extending from the base receives a force to rotate the drive member, the drive member moves the moving member so that the moving end of the moving member moves in a first direction. The groove body is fixed within the base and has a circular groove formed thereon. The lock lever is provided at the moving end of the moving member, extends from the moving end toward the groove body, and is inserted into the circular groove. The return member is provided between the position stop structure of the base and the moving member, and provides the moving member with an elastic force in a direction opposite to the first direction. When the end of the first transmission member extending from the base receives a force to rotate the drive member, and then the first transmission member no longer receives the force, the moving end of the movable member moves in the direction opposite to the first direction under the action of the elastic force until the lock lever engages with the circulation groove, at which time the movable member is stationary and the lock lever is located at either the positive rotation position or the negative rotation position in the circulation groove. When the lock lever is located at the positive rotation position in the circulation groove, the drive member is positioned at the third position, and when the lock lever is located at the negative rotation position in the circulation groove, the drive member is positioned at the fourth position.

[0012] Preferably, the bottom of the circulation groove has a step structure between the positive rotation position and the negative rotation position, and at the same time has another step structure between the negative rotation position and the positive rotation position that gradually becomes deeper from shallow, so that relative movement between the circulation groove and the lock lever allows the lock lever to be smoothly switched between the positive rotation position and the negative rotation position within the circulation groove.

[0013] Preferably, the annular body of the drive member has teeth on its outer circumferential surface, the moving member has a rack, and the connecting end of the moving member is located on the rack and is meshingly connected to the teeth.

[0014] Preferably, the moving member includes a position stop flange located between the connecting end and the moving end, and the returning member is provided between the position stop structure of the base and the position stop flange. When the moving end of the moving member moves in the first direction, the distance between the position stop flange and the position stop structure changes, thereby elastically deforming the returning member.

[0015] In one embodiment of the present invention, the curtain operating mechanism further includes a control lever. The control lever includes a fixed rod, a first rod, and a second rod. The fixed rod has a first end and a second end opposite each other, and the first end is connected to the base in a manner that allows it to swing or rotate relative to the base. The first rod is externally connected to the second end of the fixed rod and is extendable and retractable relative to the fixed rod along the axial direction of the control lever. Similarly, the second rod is externally connected to the first rod and is extendable and retractable relative to the first rod along the axial direction of the control lever. The one end of the first transmission member extending from the base is inserted into the control lever and fixedly connected to the first rod. When the first rod protrudes from the fixed rod, the first rod rotates the drive member via the moving first transmission member. At the same time, the one end of the second transmission member extending from the base is inserted into the control lever and fixedly connected to the second rod, and when the second rod protrudes from the first rod, the second rod rotates the driven member via the moving second transmission member.

[0016] Preferably, the control lever further includes an elastic partition member, both ends of which are respectively abutted between the rod position limiting structure of the first rod and one end face of the second rod that is fitted and connected to the first rod, to maintain a non-overlapping section where the first rod does not overlap with the second rod, thereby ensuring that the first rod can always be operated independently and preventing the first rod and the second rod from being pulled downward synchronously, wherein the length of the non-overlapping section is always greater than the length of the elastic partition member after it is fully compressed.

[0017] In one embodiment of the present invention, the curtain operating mechanism further includes a winding unit. The winding unit includes an external gear ring, a spring wheel, and a scroll spring. The external gear ring is connected to the driven member and can rotate together with the driven member, following the driven member, and the external gear ring is connected to the driven member in a manner that allows the driven member to move along the axial direction of the reel relative to the external gear ring. The spring wheel is operatively connected to the external gear ring. One end of the scroll spring is fixed to the base, and the other end is fixed to the spring wheel. The scroll spring is wound in a substantially coil shape around the spring wheel and can be tightened or loosened according to different rotation directions of the spring wheel. When the second transmission member receives force and rotates the driven member, the external gear ring is driven by the driven member to rotate synchronously, rotating the spring wheel in the energy accumulation direction and gradually loosening the scroll spring. At this time, when the second transmission member is no longer subjected to force, the spring wheel rotates in the direction opposite to the energy storage direction under the action of the rewinding elastic force of the scroll spring, and rotates the driven member in the reverse direction via the external gear ring, and the scroll spring gradually tightens on the spring wheel. When the driving member is in the third position and the driven member rotates in the reverse direction, the driven member does not drive the connected driving connecting member, and when the driving member is in the fourth position and the driven member rotates in the reverse direction, the driven member does not drive the connected input part of the torque conversion mechanism. [Effects of the Invention]

[0018] The curtain and its curtain operating mechanism of the present invention have the following advantages in use.

[0019] 1) When operating a curtain using a single operating cord, it is necessary to change the angle and pull it in order to perform different functions. In contrast, in the present invention, corresponding operating members (i.e., a first transmission member and a second transmission member) are provided so that the user can operate the curtain according to the function, making it less likely that confusion or malfunction will occur during operation.

[0020] 2) The curtain operating mechanism of the present invention has a driving member with an annular body surrounding the driven member, which reduces the overall size of the mechanism. When installed inside the upper beam, it does not occupy extra space and does not restrict the overall appearance design of the curtain.

[0021] 3) The curtain and its curtain operating mechanism of the present invention do not have a looped control cord that poses a safety threat to children, and in particular, when the first transmission member and the second transmission member are completely covered by the control lever, no cord is exposed in the entire curtain, completely avoiding the risk of the cord becoming entangled around a child's neck. [Brief explanation of the drawings]

[0022] [Figure 1] 1 is a partially exploded perspective view showing a first embodiment of a curtain and its curtain operating mechanism of the present invention. [Figure 2] FIG. 2 is a view showing the curtain of FIG. 1, with the curtain body and part of the upper beam omitted. [Figure 3] FIG. 2 is an exploded perspective view of the curtain operation mechanism of FIG. 1. [Figure 4] 2 is an exploded perspective view showing the curtain operation mechanism of FIG. 1 from a different angle. FIG. [Figure 5] FIG. 5 is a perspective view showing a first housing of the base of FIG. 4. [Figure 6] FIG. 4 is a perspective view showing a second housing of the base of FIG. 3. [Figure 7] FIG. 4 is a perspective view showing the central gear of FIG. 3. [Figure 8] FIG. 4 is a perspective view showing the driving member of FIG. 3. [Figure 9A]FIG. 2 is a front view showing the curtain operation mechanism of FIG. [Figure 9B] FIG. 2 is a plan view showing the curtain operation mechanism of FIG. [Figure 10] FIG. 9C is a partial cross-sectional view taken along line AA in FIG. 9B. [Figure 11A] FIG. 2 is a side view of the curtain operating mechanism of FIG. 1, with the control lever omitted. [Figure 11B] 11B is a cross-sectional view taken along line CC in FIG. 11A, in which the protrusion of the driving member is in a first position. [Figure 12A] FIG. 2 is a side view of the curtain operating mechanism of FIG. 1, with the control lever omitted. [Figure 12B] FIG. 12B is a cross-sectional view taken along line DD in FIG. 12A, in which the protrusion of the driving member is in a second position. [Figure 13] 9C is a cross-sectional view taken along line BB in FIG. 9B, in which the control lever is omitted and the drive member thereof is in a third position. [Figure 14] 10 is a schematic cross-sectional view showing the curtain operation mechanism when the drive member is located at a fourth position. FIG. [Figure 15] 2 is a partial perspective view of the curtain operating mechanism of FIG. 1, with the first housing omitted. FIG. [Figure 16] FIG. 16 is a perspective view showing the moving member of FIG. [Figure 17A] 16 is a perspective view showing the moving member of FIG. 15 from another viewpoint. FIG. [Figure 17B] 16 is a perspective view showing the moving member of FIG. 15 from another viewpoint. FIG. [Figure 18] 16 is a schematic diagram showing the relative position of the lock lever in FIG. 15 within the circulation groove. FIG. [Figure 19] FIG. 10 is an exploded schematic view showing a second embodiment of the curtain operation mechanism of the present invention, in which the first transmission member and the second transmission member are omitted. [Figure 20] 20 is a schematic diagram showing a case where the guide rail of the driving member in FIG. 19 is located at a second position. FIG. [Figure 21]20 is a schematic diagram showing a case where the guide rail of the driving member in FIG. 19 has moved from a second position to a first position relative to the protrusion of the base. FIG. [Figure 22] FIG. 20 is a perspective view of the curtain operation mechanism of FIG. 19, in which the first housing, the first transmission member, and the second transmission member are omitted. [Figure 23] 20 is a schematic diagram showing the relative position of the groove body of the lock lever in FIG. 19 within the circulation groove. FIG. [Figure 24] FIG. 10 is a partially exploded perspective view showing a third embodiment of the curtain and its curtain operating mechanism of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0023] The technical contents and features of the present invention will be described in detail below based on several embodiments with reference to the drawings. As shown in FIGS. 1 and 2, in a first embodiment of the present invention, a curtain operating mechanism 100 is applied to a curtain 200. The curtain 200 has an upper beam 220, a reel 240, and a curtain body 260. The upper beam 220 houses the reel 240 and includes two upper beam side covers 222. The reel 240 extends along an axis A1 and is rotatable about the axis A1 in opposite positive and negative directions D1, D2. In this embodiment, the reel 240 is an extruded aluminum tube, and a hollow protrusion extends longitudinally from its inner circumferential surface to form a non-circular inner periphery. One end of the curtain body 260 is fixed to the reel 240, and when the reel 240 rotates around the axis A1, the curtain body 260 is wound onto or released from the reel 240, thereby realizing the folding and unfolding of the curtain 200.

[0024] As shown in FIGS. 2 to 4, the curtain operation mechanism 100 is located within the upper beam 220 and provided at one end of the reel 240, and includes a base 1, a drive connection member 2, a torque conversion mechanism 3, a driven member 4, a driving member 5, a control lever 6, a locking mechanism 7, and a winding unit 8. The base 1 is composed of a first housing 11 and a second housing 12 that are locked and engaged with each other, and the second housing 12 has a shaft hole 121. The torque conversion mechanism 3, the driven member 4, the driving member 5, the locking mechanism 7, and the winding unit 8 are housed within the base 1. The control lever 6 is attached to the lower end of the base 1.

[0025] 2, the outer peripheral contour of the drive connection member 2 engages and is fixed to the inner peripheral edge of the reel 240, allowing the reel 240 to rotate together with the drive connection member 2. As a result, the drive connection member 2 can output positive or negative rotational torque to the reel 240, where the positive rotational torque rotates the reel 240 in the positive rotational direction D1, and the negative rotational torque rotates the reel 240 in the negative rotational direction D2. As shown in FIG. 3, the other end of the drive connection member 2 engaged and fixed to the reel 240 passes through the axial hole 121 of the second housing 12 and is inserted into the base 1, and the end surface of the drive connection member 2 inserted into the base 1 has a first ratchet structure 21 and a first latch structure 22. In the following description, "positive rotation" means that the part rotates along the positive rotation direction D1, and "negative rotation" means that the part rotates along the negative rotation direction D2.

[0026] In this embodiment, the curtain 200 is a roller curtain, but the curtain operating mechanism of the present invention can also be applied to other types of curtains, such as blinds, Roman curtains, or honeycomb curtains. In another embodiment of the present invention, the curtain operating mechanism is applied to a blind, and the blind's reel is a solid axle that cooperates with a winding shaft to wind or release a lifting cord, thereby folding and unfolding the blind. The drive connecting member has a non-circular hole (not shown), and the solid axle has a non-circular cross section and is inserted into the non-circular hole of the drive connecting member to prevent the solid axle from rotating relative to the drive connecting member. Furthermore, a pin can be inserted at the overlapping position of the solid axle and the drive connecting member to prevent the solid axle from moving axially relative to the drive connecting member. As a result, the driving connection member is fixedly connected to one end of the solid axle, and when the driving connection member rotates, the solid axle rotates together with the driving connection member.

[0027] The base 1 includes a plurality of first guide structures. Continuing to refer to FIGS. 3 to 6, as shown in FIGS. 4 and 5, the first housing 11 includes a support shaft 111, three first inclined structures 112, a plurality of shaft columns 113, and a fixed column 114. The support shaft 111, the plurality of shaft columns 113, and the fixed column 114 all extend along the axis A1, and the three first inclined structures 112 are uniformly arranged in a ring shape with the axis A1 as the axis center, with every two of them forming a circular angle of approximately 120 degrees with respect to the axis center. As shown in FIGS. 3 and 6, the second housing 12 further includes three second inclined structures 122 in addition to the shaft hole 121, and their positions correspond to the three first inclined structures 112 of the first housing 11, respectively. When the first housing 11 is coupled to the second housing 12, the three first slope structures 112 are coupled to the three second slope structures 122, respectively, and each pair of the coupled first slope structures 112 and second slope structures 122 together form the guide rail 13 (as shown in FIGS. 11A and 12A, i.e., the first guide structure). In this embodiment, the base 1 has a total of three guide rails 13, but two or three or more guide rails may be used as long as the multiple guide rails are uniformly arranged in a ring shape around the axis A1 so that components coupled to the multiple guide rails can receive uniform stress during relative movement with the multiple guide rails.

[0028] The torque conversion mechanism of the curtain operation mechanism according to the present invention includes an input unit and an output unit interlockably connected to the drive connection member. When the input unit of the torque conversion mechanism is driven to rotate, the output unit rotates in the opposite direction to the input unit and rotates the drive connection member in the same direction. As shown in FIGS. 3, 4, and 7, in this embodiment, the torque conversion mechanism 3 includes a central gear 31, multiple peripheral gears 32, an annular member 33, a connecting ring 34, and a support base 35. The central gear 31 is rotatably fitted around the support shaft 111 of the first housing 11 and includes a meshing portion 311 and a shaft portion 312. The shaft portion 312 is cylindrical and extends from the meshing portion 311 toward the reel 240 along the axis A1, with a second latch structure 313 radially disposed at its end. The second latch structure 313 corresponds to the output unit of the torque conversion mechanism 3. The multiple outer gears 32 mesh with the meshing portions 311 of the central gear 31 and are arranged annularly on the outer periphery of the central gear 31. The multiple shaft columns 113 of the first housing 11 pass through the multiple outer gears 32 and are inserted into multiple insertion holes 351 in the support base 35, thereby fixing the multiple outer gears 32 within the base 1 so that they can rotate around the shaft columns 113 relative to the support base 35. The annular member 33 is annular, has multiple teeth on its inner side, and has a second ratchet structure 331 on the side facing the reel 240. The second ratchet structure 331 corresponds to the input portion of the torque conversion mechanism 3. The annular member 33 surrounds the multiple outer gears 32 and the central gear 31, and the multiple teeth on its inner side mesh with the multiple outer gears 32.

[0029] As shown in FIGS. 3 and 4 , the connecting ring 34 has an outer latch structure 341 and an inner latch structure 342 on its outer and inner sides, respectively. The outer latch structure 341 is meshed with the first latch structure 22 of the drive connection member 2, and the inner latch structure 342 is meshed with the second latch structure 313 of the shaft portion 312 of the central gear 31. That is, the central gear 31 can establish a synchronous transmission relationship with the drive connection member 2 via the connecting ring 34. In this case, when the central gear 31 rotates, the drive connection member 2 can rotate in the same direction following the central gear 31. The connecting ring 34 serves to improve assembly convenience. In some other embodiments of the present invention, the second latch structure of the central gear is designed to directly mesh with the first latch structure of the drive connection member, thereby directly establishing a synchronous transmission relationship between the central gear and the drive connection member without the intermediary of the connecting ring.

[0030] 3 and 4, the driven member 4 includes a main body 41, a plurality of first elastic arms 42, and a plurality of second elastic arms 43. The main body 41 has a circular shape and includes a central hole 411, an annular groove 412, and a first connecting structure 413. The annular groove 412 is located on the outer periphery of the main body 41. The first connecting structure 413 may be a plurality of protrusions that are uniformly arranged in a ring shape on the main body 41 around the axis A1. The first elastic arms 42 and the second elastic arms 43 are located on opposite sides of the main body 41 facing the driving connection member 2, respectively. The main body 41 is fitted onto a support post 352 of the support base 35 via the central hole 411 so that the driven member 4 can rotate about the axis A1 relative to the support base 35 and move along the axis A1 relative to the support base 35.

[0031] In this embodiment, the number of first elastic arms 42 and the number of second elastic arms 43 are three, but this is not limited to this, and if the number of the multiple first elastic arms or the multiple second elastic arms is two, the number of first elastic arms and second elastic arms of the driven member may be two or three or more, as long as they are arranged on the main body at a circular angle of 180 degrees with respect to each other, with the axis A1 as the axis center.

[0032] In this embodiment, the first elastic arm 42 and the second elastic arm 43 are independent parts each having a fixed end and a free end located opposite to each other, of which the fixed end is engaged and connected to the body 41, and the free end can resiliently swing relative to the fixed end when subjected to a force. In some other embodiments of the present invention, the first elastic arm and the second elastic arm are each integrally molded with the body of the driven member, and have a fixed end and a free end located opposite to each other, of which the fixed end is connected to the body of the driven member, and the free end can resiliently swing relative to the fixed end when subjected to a force.

[0033] The driving member 5 includes a plurality of second guide structures, each corresponding to the plurality of first guide structures (i.e., the guide rails 13) of the base 1. As shown in FIGS. 3, 4, and 8, the driving member 5 includes an annular body 51 and three protrusions 52 (i.e., the second guide structures). The annular body 51 has a plurality of hooks 511 on the inner side thereof and a toothed portion 512 on the outer circumferential surface thereof. The hooks 511 extend radially inward of the annular body 51 and are engaged with and connected to an annular groove 412 of the main body 41 of the driven member 4 in the direction of the axis A1. At the same time, the hooks 511 are configured to be slidable within the annular groove 412 in the circumferential direction of the annular groove 412. In this way, the driving member 5 and the driven member 4 are integrally coupled along the direction of the axis A1 and can simultaneously rotate relative to each other about the axis A1 when subjected to a force. The three protrusions 52 are uniformly arranged on the outer circumferential surface of the annular body 51 with respect to the center of the annular body 51, and every two of them form a circular angle of approximately 120 degrees with respect to the center of the annular body 51. The three protrusions 52 extend outward in the radial direction of the annular body 51 and are respectively coupled to the three guide rails 13 of the base 1, and each protrusion 52 is movable within the corresponding guide rail 13 following the rotation of the annular body 51, and the range of movement is limited within the guide rail 13.

[0034] The curtain operating mechanism 100 according to the present invention further includes a first transmission member and a second transmission member. In this embodiment, as shown in Figures 3 and 4, the first transmission member is exemplified as a deflection cord 140, one end of which is connected to and surrounds at least a portion of the circumferential surface of the driving member 5, and the other end of which extends from the base 1 and is inserted into the control lever 6. The second transmission member is exemplified as a lifting cord 160, one end of which is connected to and surrounds the circumferential surface of the driven member 4, and the other end of which extends from the base 1 and is inserted into the control lever 6.

[0035] 9A and 10 , the control lever 6 includes a fixed rod 61, a first rod 62, a second rod 63, a universal joint 64, and an elastic partition member 65. The fixed rod 61 has a first end E1 and a second end E2 located opposite each other, and the first end E1 is connected to the base 1 via the universal joint 64, thereby allowing the fixed rod 61 to swing or rotate relative to the base 1. One end of the first rod 62 has a first end plug 621, and the one end of the first rod 62 is slidably connected to the second end E2 of the fixed rod 61, thereby allowing the first rod 62 to extend and retract relative to the fixed rod 61 along the axial direction of the control lever 6. The other end of the steering cord 140, connected to the drive member 5, passes through the universal joint 64 and is inserted into the fixed rod 61, and is fixed to the first end plug 621 of the first rod 62 while the steering cord 140 is maintained in a taut state. In this way, when the first rod 62 is pulled relative to the fixed rod 61 along the axial direction of the control lever 6, thereby pulling the steering cord 140 synchronously, the first rod 62 rotates the drive member 5 via the moving steering cord 140.

[0036] 10 , the lower end of the second rod 63 has a second end plug 631, and the upper end of the second rod 63 is slidably connected to the first rod 62, allowing the second rod 63 to extend and retract relative to the first rod 62 along the axial direction of the control lever 6. The other end of the lifting cord 160 connected to the driven member 4 passes through the universal joint 64, then passes through the fixed rod 61, the first rod 62, and the second rod 63, and is finally fixed to the second end plug 631 while the lifting cord 160 is maintained in a taut state. When the second rod 63 is pulled out relative to the first rod 62 along the axial direction of the control lever 6, the lifting cord 160 is pulled out synchronously, and the second rod 63 rotates the driven member 4 via the moving lifting cord 160.

[0037] In another embodiment of the present invention, the second rod has the second end plug at its upper end, and the other end of the lift cord connected to the driven member is fixed to the second end plug after passing through the universal joint, the fixed rod, and the first rod, i.e., the second end plug can be selectively disposed at the upper end or the lower end of the second rod.

[0038] 10 to 14, when the first rod 62 is pulled out relative to the fixed rod 61 to rotate the drive member 5, each of the plurality of protrusions 52 of the drive member 5 is guided by a corresponding guide rail 13 and moves between a first position P1 (see FIG. 11B) and a second position P2 (see FIG. 12B), with the second position P2 being farther from the reel 240 than the first position P1. When the drive member 5 rotates and moves each of the protrusions 52 from the first position P1 to the second position P2, the drive member 5 itself moves along the axis A1 in synchronization with the positional displacement of the plurality of protrusions 52 from the third position P3 (see FIG. 13) to a fourth position P4 (see FIG. 14) that is farther from the reel 240 than the third position P3, thereby moving the driven member 4 toward the annular member 33. In contrast, when the drive member 5 rotates to move each protrusion 52 from the second position P2 to the first position P1, the drive member 5 itself moves from the fourth position P4 to the third position P3 along the axis A1 in synchronization with the positional shift of the plurality of protrusions 52. The reason why the plurality of protrusions 52 and the plurality of guide rails 13 of the base 1 must be uniformly arranged around the axis A1 is to make the force acting on the drive member 5 as uniform as possible during rotation so that the axial direction of the annular body 51 can be maintained parallel to the axis A1 while the drive member 5 moves along the axis A1.

[0039] 3, 4, 10, and 13, when the driving member 5 is located at the third position P3, the second rod 63 is pulled out relative to the first rod 62 to rotate the driven member 4 in the positive rotation direction D1. The driven member 4 is coupled to the first ratchet structure 21 of the driving connection member 2 via the first elastic arms 42, thereby rotating the driving connection member 2 in the positive rotation direction D1 in the same direction, thereby outputting the positive rotation torque to the reel 240. In this embodiment, when the reel 240 rotates in the positive rotation direction D1 due to the positive rotation torque, the curtain main body 260 is rolled up, causing the curtain main body 260 to rise. Therefore, when the driving member 5 is located at the third position P3, it means that the curtain 200 is in the curtain folding control mode.

[0040] 3, 4, 10, and 14 simultaneously, when the drive member 5 is located at the fourth position P4, the second rod 63 is pulled out relative to the first rod 62 to rotate the driven member 4 in the positive rotation direction D1. The driven member 4 is coupled to the second ratchet structure 331 of the annular member 33 via the plurality of second elastic arms 43, thereby rotating the annular member 33 in the positive rotation direction D1 in the same direction. When the annular member 33 rotates in the positive rotation direction D1, the central gear 31 is rotated in the negative rotation direction D2 via the plurality of peripheral gears 32, and the central gear 31 outputs the negative rotational torque to the reel 240 via the connecting ring 34 and the drive connection member 2. Wherein, the second ratchet structure 331 of the annular member 33 functions as an input part of the torque conversion mechanism 3, and the second latch structure 313 of the central gear 31 functions as an output part of the torque conversion mechanism 3. In this embodiment, when the reel 240 rotates in the negative rotation direction D2 by the negative rotation torque, the curtain body 260 is released and the curtain body 260 is lowered. Therefore, when the driving member 5 is located at the fourth position P4, it means that the curtain 200 is in the curtain deployment control mode.

[0041] The control mode of the curtain according to the present invention is always either the folding control mode or the unfolding control mode of the curtain. In this embodiment, the positive and negative rotations of the reel 240 correspond to the folding and unfolding of the curtain body 260 simply because of the structure, and the reverse setting may also be used.

[0042] In the above-described embodiment, the annular member 33 of the torque conversion mechanism 3 serves as a transmission component that transmits the rotational torque of the driven member 4 to the multiple peripheral gears 32. However, the structure of the transmission component and its relative positional relationship with the driven member are not limited to those described above, and any mechanism that can achieve the same effect can be used. For example, in another embodiment of the present invention, the driving member and the driven member are attached to the side of the annular member of the torque conversion mechanism that is away from the reel. At the same time, the second ratchet structure of the annular member, serving as the input part of the torque conversion mechanism, is disposed on the side of the annular member facing the driven member to connect to the driven member in a specific control mode.

[0043] In another embodiment of the present invention, the torque conversion mechanism does not include the annular member, but includes only a central gear and an outer gear. The central gear has a meshing portion and a shaft portion extending from the meshing portion toward the reel, and the end of the shaft portion functions as the output portion of the torque conversion mechanism and is engaged with and connected to the drive connection member. The shaft portion can also be connected to the drive connection member in other ways to transmit power, and the axis of the shaft portion does not necessarily have to coincide with the rotation axis of the reel. The diameter of the outer gear is larger than the diameter of the central gear, and the outer gear meshes with the meshing portion of the central gear. At the same time, the outer gear has a wheel surface ratchet structure (not shown) on the side facing the driven member. The wheel surface ratchet structure has a structure similar to the second ratchet structure 331 of the annular member 33 shown in FIG. 4 and functions as the input portion of the torque conversion mechanism, thereby transmitting the rotational torque of the driven member to the outer gear. More specifically, when the driving member is in the fourth position, when the driven member is driven to rotate, the driven member engages with the wheel face ratchet structure (not shown) to rotate the outer gear in the same direction.

[0044] 15 and 16, as well as FIGS. 3 to 6, when the driving member 5 is driven to rotate by the turning cord 140, the driving member 5 always rotates in the same specific direction (the positive rotation direction D1 in this embodiment), and then the locking mechanism 7 moves and positions the driving member 5 to the third position P3 or the fourth position P4. In this embodiment, the locking mechanism 7 includes a moving member 71, a lock lever 72, and a restoring member 73. The moving member 71 has a block 711 and a rack 712 extending upward from the block 711. The moving member 71 has a connecting end CE and a moving end ME located opposite to each other. The connecting end CE is disposed on the rack 712 and is meshed with and connected to the driving member 5. The moving end ME is disposed on the block 711 and has a circulating groove 713. When the driving member 5 is driven to rotate by the steering cord 140, it moves the moving member 71 in a first direction D3, and at this time, the moving end ME of the moving member 71 also moves in the first direction D3. The block 711 further has a recess 714 on the side opposite to the side where the circulation groove 713 is provided. The rack 712 further has a positioning protrusion 7121 on the side opposite to the side that engages and connects with the driving member 5. The positioning protrusion 7121, in cooperation with the position limiting structure of the base 1, can limit the movement of the moving member 71 to the first direction D3.

[0045] Continuing to refer to FIG. 5 in addition to FIGS. 15 and 16, the first housing 11 further includes an arc-shaped fixing piece 115, a positioning structure 116, and a locking lever fixing structure 117. The arc-shaped fixing piece 115 prevents the annular body 51 of the driving member 5 from being deformed by force during rotation, preventing smooth rotation. The locking lever 72 may be made of a material with a certain degree of rigidity, such as a steel wire or a hard plastic rod, and one end of the locking lever 72 is fixed to the locking lever fixing structure 117 of the first housing 11 and the other end is inserted into the circulating groove 713. The returning member 73 may be a spring and is disposed between the positioning structure 116 of the first housing 11 and the bottom of the moving member 71 along the first direction D3. Preferably, the restoring member 73 is partially housed in the recess 714, and both ends thereof abut against the first abutment surface 1161 of the position stop structure 116 and the second abutment surface 7141 of the recess 714, respectively.

[0046] 15 and 17A to 18, when the turning cord 140 receives a force to rotate the driving member 5, the driving member 5 moves the moving member 71 to move the moving end ME of the moving member 71 toward the first direction D3, and then, when the turning cord 140 no longer receives the force, the returning member 73 applies an elastic force to the moving member 71 in the direction opposite to the first direction D3, thereby moving the moving member 71 in the direction substantially opposite to the first direction D3 until the lock lever 72 engages with the inner wall of the circulation groove 713. At this time, the moving member 71 is stationary, and the lock lever 72 is located at a positive rotation position P5 or a negative rotation position P6 within the circulation groove 713.

[0047] More specifically, when the lock lever 72 is initially positioned at the positive rotation position P5 in the circulation groove 713, the relative position between the lock lever 72 and the moving member 71 changes due to the above-described operation, and the lock lever 72 is positioned at the negative rotation position P6 in the circulation groove 713. On the other hand, when the lock lever 72 is initially positioned at the negative rotation position P6 in the circulation groove 713, the relative position between the lock lever 72 and the moving member 71 changes due to the above-described operation, and the lock lever 72 is positioned at the positive rotation position P5 in the circulation groove 713. During the above operation, the circulating groove 713 of the moving member 71 slides against the locking lever 72, so that the locking lever 72 remains stationary, and the relative sliding causes the moving end ME of the moving member 71 to slightly deviate from its original position during the reverse movement caused by the elastic force of the returning member 73, so that the moving member 71 is stopped and positioned at different positions each time, and the locking lever 72 is locked at different positions in the circulating groove 713. When the locking lever 72 is locked at the positive rotation position P5 in the circulating groove 713, the driving member 5 is positioned at the third position P3, and when the locking lever 72 is locked at the negative rotation position P6 in the circulating groove 713, the driving member 5 is positioned at the fourth position P4.

[0048] To summarize the above, every time the driving member 5 is driven to rotate by the turning cord 140, the locking mechanism 7 switches the driving member 5 from one of the third position P3 and the fourth position P4 to the other, and correspondingly switches the curtain 200 between the curtain folding control mode and the curtain unfolding control mode, and every time the downward pulling operation of the turning cord 140 is completed, the curtain 200 does not remain in any state other than the curtain folding control mode and the curtain unfolding control mode, for example, an intermediate state that causes the driven member 4 to spin freely when the lifting cord 160 is pulled downward.

[0049] 17A, 17B, and 18, in this embodiment, the bottom of the circulation groove 713 first exhibits a gently sloping structure 7131 that gradually changes from deep to shallow between the negative rotation position P6 and the positive rotation position P5, and then exhibits a stepped structure 7132 with a difference in height from shallow to deep. Similarly, between the positive rotation position P5 and the negative rotation position P6, the bottom of the circulation groove 713 first exhibits a gently sloping structure 7133 that gradually changes from deep to shallow, and then exhibits a stepped structure 7134 with a difference in height from shallow to deep. This structural design facilitates smooth sliding of the lock lever 72 in the circulation groove 713, so that the lock lever 72 is finally engaged and connected at the positive rotation position P5 or the negative rotation position P6 in the circulation groove 713, and the lock lever 72 is prevented from engaging and connecting at any position other than the positive rotation position P5 and the negative rotation position P6 in the circulation groove 713. In this way, it is more certain that the driving member 5 is positioned at only one of the third position P3 and the fourth position P4, and the curtain 200 is always maintained in either the curtain folding control mode or the curtain unfolding control mode after the downward pulling operation of the turning cord 140 is completed.

[0050] 19 to 23 show a second embodiment of the curtain operation mechanism of the present invention. As shown in FIGS. 19 to 23, in this embodiment, the curtain operation mechanism 100' differs from the curtain operation mechanism 100 of the first embodiment mainly in its locking mechanism, and also in the guide structure used when the base and drive member function together. The curtain operation mechanism 100' is applied to a curtain (not shown) having a reel (not shown) that extends along an axis A2 and is rotatable about the axis A2. The curtain operation mechanism 100' is connected to the reel via its drive connecting member 2 so that the reel can rotate together with the drive connecting member 2. The base 1' of the curtain operating mechanism 100' includes a first housing 11' and a second housing 12'. The first housing 11' has a support shaft 111' extending along the axis A2, three protrusions 112' (only one of which is shown) evenly arranged around the support shaft 111', and a groove body fixing structure 113'. The drive member 5' of the curtain operating mechanism 100' includes an annular body 51' and three guide rails 52' (only two of which are shown). The guide rails 52' are recessed inward along the radial direction of the annular body 51' on the outer circumferential surface of the annular body 51' and evenly arranged on the outer circumferential surface of the annular body 51', so that every two of the guide rails form a circular angle of approximately 120 degrees with respect to the center of the annular body 51'. The annular body 51' also has a pivot point 511' on its outer circumferential surface.

[0051] 19 to 23, the three guide rails 52' of the driving member 5' are respectively coupled to the three protrusions 112' of the first housing 11', so that each guide rail 52' can move relative to the corresponding protrusion 112' between a first position P1' and a second position P2' following the rotation of the annular body 51' of the driving member 5'. Of these, the second position P2' is farther from the driving connecting member 2 than the first position P1' (i.e., relatively farther from the curtain reel). 21, when an end of the first transmission member (not shown) of the curtain operation mechanism 100' extending from the base 1' receives a force and rotates the drive member 5', the guide rails 52' are moved from the second position P2' to the first position P1' relative to the corresponding protrusions 112', and the drive member 5' synchronously moves along the axis A2 from a fourth position P4' to a third position P3', the third position P3' being relatively close to the drive connecting member 2 (i.e., relatively close to the curtain reel). On the other hand, when the drive member 5' rotates and moves the guide rails 52' from the first position P1' to the second position P2' relative to the corresponding protrusions 112', the drive member 5' synchronously moves along the axis A2 from the third position P3' to the fourth position P4'.

[0052] 19, 22, and 23, in this embodiment, the locking mechanism 9 of the curtain operating mechanism 100' includes a moving member 91, a groove body 92, and a return member 93. The moving member 91 has a connection end CE' and a moving end ME' located opposite each other, and the connection end CE' is pivotally connected to the pivot portion 511' of the driving member 5'. When one end of the first transmission member (not shown) extending from the base 1' receives a force and rotates the driving member 5', the driving member 5' moves the moving member 91 to move the moving end ME' of the moving member 91 substantially in the first direction D3'. The groove body 92 is fixed to the groove body fixing structure 113', and a circulating groove 921 is formed on its surface.

[0053] 19, 22, and 23, in this embodiment, the moving member 91 includes a lock lever 911 and a position stop flange 912. The lock lever 911 is provided at the moving end ME' of the moving member 91, extends toward the groove body 92, and is inserted into the circulation groove 921. The position stop flange 912 is adjacent to the connecting end CE' of the moving member 91. In this embodiment, the upper end of the groove body fixing structure 113' also functions as a position stop structure. The returning member 93 may be a spring, and is provided between the upper end of the groove body fixing structure 113' and the bottom of the moving member 91 approximately along the first direction D3'. Preferably, a position stop ring 180 is further provided between the upper end of the groove body fixing structure 113′ and the returning member 93, and one end of the returning member 93 abuts against the position stop flange 912 and the other end abuts against the upper end of the groove body fixing structure 113′ via the position stop ring 180. When the driving member 5′ rotates to move the moving end ME′ of the moving member 91 substantially toward the first direction D3′, the position stop flange 912 approaches the position stop ring 180, thereby compressing the returning member 93. Thereafter, when the driving member 5' no longer applies a biasing force to the movable member 91, the return member 93 applies an elastic force to the movable member 91 in the direction opposite to the first direction D3', so that the movable end ME' of the movable member 91 moves in the direction approximately opposite to the first direction D3' until the lock lever 911 engages with the positive rotation position P5' or the negative rotation position P6' within the circulation groove 921 of the groove main body 92.

[0054] At this time, the drive member 5' moves to the third position P3' or the fourth position P4' and is positioned there. For example, as shown in Figures 22 and 23, when the lock lever 911 is locked at the negative rotation position P6' in the circulation groove 921 of the groove main body 92, the drive member 5 is positioned at the fourth position P4', and in conjunction with this, the driven member (not shown) is positioned at a specific position connected to the input part of the torque conversion mechanism, thereby enabling the negative rotation torque to be output to the curtain reel. On the other hand, when the lock lever 911 is locked at the positive rotation position P5' in the circulation groove 921 of the groove main body 92, the drive member 5' is positioned at the third position P3', and in conjunction with this, the driven member (not shown) is positioned at a specific position connected to the drive connecting member, thereby enabling the positive rotation torque to be output to the curtain reel. The pattern of relative movement between the circulation groove 921 and the lock lever 911 is similar to that of the above embodiment, but whereas in the above embodiment the lock lever is kept stationary and the moving member moves relative to the lock lever, in this embodiment the circulation groove 921 is kept stationary and the lock lever 911 moves relative to the circulation groove 921 within the circulation groove 921.

[0055] 1, 3, 4 and 15 again, when the curtain 200 is in the curtain folding control mode, a user can achieve folding of the curtain 200 by repeatedly pulling the second rod 63 of the control lever 6 relative to the first rod 62; similarly, when the curtain 200 is in the curtain unfolding control mode, a user can achieve unfolding of the curtain 200 by repeatedly pulling the second rod 63 of the control lever 6 relative to the first rod 62. In the process of repeatedly pulling the second rod 63 of the control lever 6, the second rod 63 is automatically retracted to its original position after being pulled out by the user, and this function is mainly realized by the winding unit 8.

[0056] 3, 4, and 15, the winding unit 8 includes an external gear ring 81, a spring wheel 82, and a scroll spring 83. The external gear ring 81 has a second coupling structure 811 including a plurality of through holes uniformly arranged around the ring and pillars disposed between the plurality of through holes. The first coupling structure 413 of the driven member 4 includes a plurality of protrusions, each of which passes through a corresponding one of the plurality of through holes of the second coupling structure 811 and is slidable relative to the through holes. At the same time, the pillars of the second coupling structure 811 are inserted between two of the plurality of protrusions of the first coupling structure 413. This allows the external gear ring 81 to be connected to the driven member 4 and to rotate following the driven member 4, and simultaneously allows the driven member 4 to move along the axis A1 relative to the external gear ring 81. The spring wheel 82 is rotatably fitted onto the fixed post 114 of the first housing 11, and the outer side of the external gear ring 81 is provided with a plurality of teeth that mesh with the outer teeth of the spring wheel 82, so that the spring wheel 82 and the external gear ring 81 are interlockingly connected to each other. Both ends of the scroll spring 83 are fixed to the first housing 11 of the base 1 and the spring wheel 82, respectively, and the scroll spring 83 is wound in a coil shape with the spring wheel 82 as its approximate axis, and can be tightened or loosened according to different rotation directions of the spring wheel 82.

[0057] 3, 4, 10, and 15 simultaneously, when the second transmission member 160 receives a force and rotates the driven member 4 in the positive rotation direction D1, the external gear ring 81 follows the driven member 4 and rotates in the positive rotation direction D1, further rotating the spring wheel 82 in the energy storage direction D4. At this time, the scroll spring 83 is tightened and accumulates a rewinding elastic force. Thereafter, when the second transmission member 160 no longer receives the force, the scroll spring 83 is loosened and imparts the rewinding elastic force to the spring wheel 82, thereby rotating the spring wheel 82 in the direction opposite to the energy storage direction D4 and further rotating the driven member 4 in the negative rotation direction D2 via the external gear ring 81. When the driven member 4 rotates in the negative rotation direction D2, the second rod 63 is moved toward the first rod 62 via the second transmission member 160, thereby realizing the automatic extension and retraction function.

[0058] 10 in addition to FIG. 15, when the second rod 63 moves toward the first rod 62 under the action of the rewinding elastic force of the scroll spring 83, the movement path of the second rod 63 must be restricted so that the entire section or most of the section of the first rod 62 does not overlap with the second rod 63. If the entire section of the first rod 62 overlaps with the second rod 63, the next time the user pulls the first rod 62 downward, the user will inevitably move the second rod 63 downward at the same time, and the two functions of switching mode and raising and lowering the curtain body will be performed at the same time, which will lead to user confusion.

[0059] 10 , the first rod 62 is provided with the elastic partition member 65 to limit the upward movement of the second rod 63 so as not to exceed a position limiting position. The elastic partition member 65 has elasticity and a specific length determined by the elasticity and the position limiting position. In this embodiment, the elastic partition member 65 is exemplified as a spring, one end of which abuts against the rod position limiting structure (i.e., the first end plug 621) of the first rod 62, and the other end of which abuts against one end surface of the second rod 63 that is fitted and connected to the first rod 62. The elastic partition member 65 is installed to restrict the second rod 63 below the position limit position, so that the first rod 62 can maintain the non-overlapping section 622 throughout all movements of the control lever 6, and the non-overlapping section 622 does not overlap the second rod 63 at any time. In other words, when the lifting cord 160 (i.e., the second transmission member) is no longer subjected to force and is wound around the circumferential surface of the driven member 4 by the rewinding elastic force of the scroll spring 83, the wound lifting cord 160 maintains the non-overlapping section 622 as it is without causing the second rod 63 to abut against the first end plug 621 of the first rod 62. The non-overlapping section 622 has a length that is always greater than the length of the elastic partition member 65 after it is fully compressed.

[0060] At the same time, in this embodiment, the length of the non-overlapping section 622 is approximately equal to the length of the elastic partition member 65 and changes according to changes in the length of the elastic partition member 65. In this way, by operating the non-overlapping section 622 of the first rod 62, the user is assured that the mode switching function can always be independently performed by pulling the first rod 62 downward alone, and the occurrence of an erroneous operation in which the second rod 63 is moved together with the first rod 62 is avoided. In some other embodiments, the length of the non-overlapping section may be longer than the length of the elastic partition member, and when the first rod and the second rod are in an upright state where they hang naturally without being operated, the lower part of the elastic partition member abuts against the end surface of one end of the second rod that is fitted over and connected to the first rod, but the other end does not contact the rod position limiting structure of the first rod (e.g., the first end plug), so that the space of the non-overlapping section can still be maintained and the non-overlapping section is always kept from overlapping with the second rod, ensuring that when the user pulls the first rod downward, the second rod does not move downward at the same time.

[0061] Continuing to refer to Figures 10 and 15, when the first rod 62 is pulled downward to move the steering cord 140, the upper end of the elastic partition member 65 is pressed slightly downward by the rod position limiting structure of the first rod 62 (i.e., the first end plug 621), causing elastic deformation to absorb all downward pressure, thereby keeping the second rod 63 stationary relative to the first rod 62. Thereafter, when the first rod 62 is no longer subjected to force, the driving member 5 rotates slightly in the reverse direction under the action of the elastic force of the return member 73 of the locking mechanism 7 to wind up the turning cord 140, and at the same time, the elastic partition member 65 releases its elastic force to press the rod position limiting structure (i.e., the first end plug 621), so that the first rod 62 returns to its original position due to the upward pulling of the turning cord 140 and the pressing action of the elastic force.

[0062] In another embodiment of the present invention, the second rod is connected to the outer periphery of the first rod by fitting onto the outer periphery, the first rod has an outer flange extending radially from the outer periphery at the other end opposite to the end to which the second rod is fitted, the elastic partition member is a cylinder made of an elastic material and fitted onto the outside of the first rod, its upper end abutting the outer flange of the first rod and its lower end abutting the end face of the second rod at the end to which the first rod is fitted. When the first rod is pulled downward, the upper end of the elastic partition member is slightly compressed by the outer flange and absorbs all downward pressure, allowing the second rod to remain stationary relative to the first rod. When the first rod is no longer subjected to force, the elastic partition member releases its elastic force against the outer flange, returning the outer flange to its original position. Meanwhile, when the second rod is pulled downward and no longer subjected to force, the second rod moves upward under the action of the scroll spring and compresses the lower end of the elastic partition member to a certain extent, reaching a position limit without overlapping with the entire or most of the first rod. During all of the above operations, the elastic partition member maintains the non-overlapping section of the first rod that does not overlap with the second rod, preventing accidental simultaneous execution of different operating functions.

[0063] FIG. 24 shows a third embodiment of the curtain and its operation in accordance with the present invention. As shown in FIG. 24, in this embodiment, the curtain operation mechanism 100″ differs from the curtain operation mechanism 100 of the first embodiment in that it does not have any control lever. The curtain operation mechanism 100″ is applied to a curtain 300 having an upper beam 320. The first transmission member of the curtain operation mechanism 100″ is exemplified as a turning cord 140″, one end of which is fixed to a driving member (not shown) in the base 1″, and the other end of which extends from the base 1″ and is exposed to the upper beam 320. When pulled downward by a user, the driving member (not shown) can be rotated in the axial direction of the reel of the curtain 300. The second transmission member of the curtain operating mechanism 100" is exemplified as a lifting cord 160", one end of which is connected to a driven member (not shown) in the base 1", the other end of which extends from the base 1" and is exposed to the upper beam 320, and can rotate the driven member (not shown) in the axial direction of the reel of the curtain 300 when directly pulled downward by a user.

[0064] For ease of identification by users, the turning cord 140" and the lifting cord 160" themselves or the handle members 141" and 161" connected to their ends can be manufactured to have different colors, materials, or designs. A user can rotate the driven member (not shown) by pulling the lifting cord 160" downward, thereby outputting a positive or negative rotational torque to the reel of the curtain 300 depending on the current control mode of the curtain 300. In addition, a user can rotate the drive member (not shown) by pulling the turning cord 140" downward as needed, thereby switching the control mode of the curtain 300 between the curtain folding control mode and the curtain unfolding control mode. When operating one operating cord, it is necessary to pull it at different angles to perform different functions, whereas the curtain operating mechanism 100" of this embodiment has two operating cords, namely the turning cord 140" and the lifting cord 160", to perform different functions, which makes it easier for users to learn and less likely to make mistakes. It also solves the problem that the curtain controller of a conventional curtain is often installed adjacent to the upper beam, which is difficult to reach and makes operation inconvenient.

[0065] In the curtain 200, 300 and its curtain operating mechanism 100, 100', 100" according to the present invention, the plurality of first guide structures (i.e., guide rails 13 and protrusions 112') of the base 1, 1', 1" and the plurality of second guide structures (i.e., protrusions 52 and guide rails 52') of the drive member 5, 5' function in cooperation with each other, so that the drive member 5, 5' can rotate under force and simultaneously move in the axial direction of the reel 240 of the curtain 200, 300, and further, the driven member 4 can be displaced and switched between two specific positions corresponding to the curtain folding control mode and the curtain unfolding control mode. At the same time, since the annular body 51, 51' of the driving member 5, 5' is designed to surround the driven member 4, the curtain operating mechanism 100, 100', 100" can be made compact. The curtain operating mechanism 100, 100', 100" of the present invention includes the first and second transmission members that control the rotation of the driving member 5, 5' and the driven member 4, respectively, and these transmission members extend from the upper beam 220, 320 of the curtain 200, 300 and are close to the user, making them easy to operate and preventing confusion by separating the operations of the two functions of switching and raising and lowering. Furthermore, since the curtain operating mechanism 100, 100', 100" of the present invention can cover the first and second transmission members with the control lever 6, no cords are exposed in the entire curtain 200, 300, avoiding the risk of accidents caused by children and complying with international safety regulations related to curtain manufacturing.

[0066] The above is merely an embodiment of the present invention, and any equivalent modifications made without departing from the scope of the specification and claims of the present invention should be included in the scope of the claims of the present invention. [Explanation of symbols]

[0067] 200, 300 curtains 220, 320 upper beam 222 Upper beam side cover 240 reels 260 Curtain body 100, 100', 100" curtain operating mechanism 140, 140" turning cord (first transmission member) 160, 160" Lifting cord (second transmission member) 141", 161" hand-held parts 180 Position stop ring 1, 1', 1" base 11, 11' First housing 111, 111' spindle 112 First Slope Structure 113 Axial column 114 Fixed column 115 Arc-shaped fixed piece 116 Positioning structure 1161 First contact surface 117 Lock lever fixing structure 12, 12' Second housing 121 Shaft hole 122 Second Slope Structure 13, 52' guide rail 2. Drive connection member 21 First ratchet structure 22 First latch structure 3 Torque conversion mechanism 31 Central gear 311 Meshing part 312 Shaft 313 Second latch structure 32 Peripheral gear 33 Annular member 331 Second ratchet structure 34 Connecting Ring 341 External latch structure 342 Inner latch structure 35 Support Base 351 Insertion hole 352 Post 4. Driven member 41 Main Unit 411 Center hole 412 Annular groove 413 First Bond Structure 42 First elastic arm 43 Second Elastic Arm 5, 5' driving member 51, 51' Annular body 511 Hook 511' Pivot joint 512 Dentate 52, 112' protrusion 6 Control Lever 61 Fixed rod 62 First rod 621 first end plug 622 Non-overlapping Sections 63 Second rod 631 Second End Plug 64 Universal Joint 65 Elastic partition member 7, 9 Locking mechanism 71, 91 Moving parts Block 711 712 racks 7121 Positioning protrusion 713, 921 Circulation groove 7131, 7133 Gentle slope structure 7132, 7134 Step structure 714 recess 7141 Second abutment surface 72, 911 lock lever 73, 93 Return member 912 Position stop flange 92 Groove body 8 Winding unit 81 External gear ring 811 Second Bond Structure 82 Spring Wheel 83 Scroll Spring A1,A2 axis CE, CE' connection end ME, ME' moving end D1, positive direction of rotation D2 Negative rotation direction D3, D3' First direction D4 Energy accumulation direction E1 First end E2 Second end P1, P1' First position P2, P2' Second position P3, P3' Third position P4, P4' Fourth position P5, P5' Positive rotation position P6, P6' Negative rotation position

Claims

1. A curtain operating mechanism that is applied to a curtain having a reel and operates to open and close the curtain, a drive connection member, a base, a torque conversion mechanism, a drive member, and a driven member; the drive connection member is fixedly connected to one end of the reel so that the reel can rotate together with the drive connection member; the base includes a plurality of first guide structures; the torque conversion mechanism includes an input portion and an output portion, the output portion is interlockingly connected to the drive connection member, and when the input portion of the torque conversion mechanism is driven to rotate, the output portion rotates in a direction opposite to that of the input portion, and the output portion rotates the drive connection member in the same direction; the driven member is provided within the base so as to be rotatable in the axial direction of the reel, the drive member includes an annular body, a plurality of second guide structures, a first transmission member, and a second transmission member; the annular body surrounds the driven member and is connected to the driven member in the axial direction of the reel so that the driven member can follow the drive member and move synchronously along the axial direction of the reel, and the annular body and the driven member are rotatable relative to each other about the axial direction of the reel when each receives a force; the second guide structures are provided on the outer peripheral surface of the annular body, are respectively coupled to the first guide structures of the base, and are movable relative to the corresponding first guide structures between a first position and a second position farther from the reel than the first position in accordance with the rotation of the annular body; when the drive member rotates to move each of the second guide structures from the first position to the second position relative to the corresponding first guide structure, the drive member is synchronously guided to move from a third position along the axial direction of the reel to a fourth position farther from the reel than the third position, and moves the driven member to the input portion connected to the torque conversion mechanism; when the drive member rotates to move each of the second guide structures from the second position to the first position relative to the corresponding first guide structure, the drive member is synchronously guided to move from the fourth position to the third position along the axial direction of the reel, and moves the driven member to be connected to the drive connection member; the first transmission member has one end connected to the drive member and the other end extending from the base and receiving a force to rotate the drive member; the second transmission member has one end connected to the driven member and the other end extending from the base and receiving a force to rotate the driven member; when one end of the first transmission member extending from the base receives a force to rotate the drive member, each of the second guide structures of the drive member moves from one of the first position and the second position to the other relative to the corresponding first guide structure, and synchronously guides the drive member to move appropriately along the axial direction of the reel; When the drive member is located at the third position and one end of the second transmission member extending from the base receives a force to rotate the driven member, the driven member drives and rotates the connected drive connecting member, thereby outputting a positive rotational torque to the reel, and when the drive member is located at the fourth position and one end of the second transmission member extending from the base receives a force to rotate the driven member, the driven member drives and rotates the connected input part of the torque conversion mechanism, thereby causing the output part of the torque conversion mechanism to output a negative rotational torque to the reel via the drive connecting member.

2. a locking mechanism provided in the base and configured to position the driving member at either the third position or the fourth position, the locking mechanism including a moving member, a locking lever, and a restoring member; the moving member has a connection end and a moving end located opposite to each other, the connection end is connected to the driving member, and a circulation groove is provided in the moving end, and when the one end of the first transmission member extending from the base receives a force and rotates the driving member, the driving member moves the moving member to move the moving end of the moving member in a first direction, One end of the lock lever is fixed to the base, and the other end is inserted into the circulation groove. the restoring member is provided between the position stop structure of the base and the moving member, and provides the moving member with an elastic force in a direction opposite to the first direction; 2. The curtain operating mechanism of claim 1, wherein the one end of the first transmission member extending from the base receives a force to rotate the drive member, and then, when the first transmission member no longer receives the force, the moving end of the movable member moves in a direction opposite to the first direction under the action of the elastic force until the lock lever engages with the circulation groove, and at this time, the movable member is in a stationary state, and the lock lever is located at either a positive rotation position or a negative rotation position in the circulation groove, and when the lock lever is located at the positive rotation position in the circulation groove, the drive member is positioned at the third position, and when the lock lever is located at the negative rotation position in the circulation groove, the drive member is positioned at the fourth position.

3. a locking mechanism provided in the base and configured to position the driving member at either the third position or the fourth position, the locking mechanism including a moving member, a groove body, a locking lever, and a restoring member; the moving member has a connection end and a moving end positioned opposite to each other, the connection end is connected to the driving member, and when the one end of the first transmission member extending from the base receives a force and rotates the driving member, the driving member moves the moving member to move the moving end of the moving member in a first direction; The groove body is fixed in the base and has a circular groove thereon; the lock lever is provided at the moving end of the moving member, extends toward the groove body, and is inserted into the circulation groove; the restoring member is provided between the position stop structure of the base and the moving member, and provides the moving member with an elastic force in a direction opposite to the first direction; 2. The curtain operating mechanism of claim 1, wherein the one end of the first transmission member extending from the base receives a force to rotate the drive member, and then, when the first transmission member no longer receives the force, the moving end of the movable member moves in a direction opposite to the first direction under the action of the elastic force until the lock lever engages with the circulation groove, and at this time, the movable member is in a stationary state, and the lock lever is located at either a positive rotation position or a negative rotation position in the circulation groove, and when the lock lever is located at the positive rotation position in the circulation groove, the drive member is positioned at the third position, and when the lock lever is located at the negative rotation position in the circulation groove, the drive member is positioned at the fourth position.

4. The curtain operating mechanism according to claim 2 or claim 3, wherein the bottom of the circulation groove has a step structure that gradually becomes deeper from shallow to deep between the positive rotation position and the negative rotation position, and between the negative rotation position and the positive rotation position.

5. 4. The curtain operating mechanism according to claim 2, wherein the driving member has teeth on the outer peripheral surface of the annular body, the moving member has a rack, and the connecting end of the moving member is located on the rack and is connected to and meshes with the teeth.

6. 4. The curtain operating mechanism of claim 2, wherein the movable member has a position stop flange disposed between the connecting end and the moving end, and the return member is provided between the position stop structure of the base and the position stop flange, and when the moving end of the movable member moves in the first direction, the distance between the position stop flange and the position stop structure changes, thereby elastically deforming the return member.

7. a control lever, the control lever including a fixed rod, a first rod, and a second rod; the fixed rod has a first end and a second end located opposite each other, the first end of the fixed rod being connected to the base; the first rod is fitted onto and connected to the second end of the fixed rod and is extendable and contractible relative to the fixed rod along the axial direction of the control lever, and the one end of the first transmission member extending from the base is inserted into the control lever and fixedly connected to the first rod; the second rod is fitted onto and connected to the first rod and is extendable and contractible relative to the first rod along the axial direction of the control lever, and the one end of the second transmission member extending from the base is inserted into the control lever and fixedly connected to the second rod; 2. The curtain operating mechanism according to claim 1, wherein the drive member is rotated via the first transmission member when the first rod is protruded relative to the fixed rod, and the driven member is rotated via the second transmission member when the second rod is protruded relative to the first rod.

8. 8. The curtain operating mechanism of claim 7, wherein the control lever further comprises an elastic partition member, the elastic partition member being abutted between the rod position limiting structure of the first rod and an end face of the second rod at one end thereof that is fitted over and connected to the first rod, thereby maintaining a non-overlapping section in which the first rod does not overlap with the second rod, and the length of the non-overlapping section is always greater than the length of the elastic partition member after it is fully compressed.

9. The curtain operating mechanism of claim 1 , wherein the first guide structure is one of a guide rail and a protrusion, and the second guide structure is another of a guide rail and a protrusion.

10. the torque conversion mechanism includes a central gear, a plurality of peripheral gears, and an annular member; the central gear is provided in the base so as to be rotatable in the axial direction of the reel and has a shaft portion, the output portion of the torque conversion mechanism is disposed at one end of the shaft portion, The plurality of outer gears are provided in the base so as to be rotatable in the axial direction of the reel, and are each meshed with and surrounded by the outer periphery of the central gear, 2. The curtain operating mechanism of claim 1, wherein the annular member has an annular shape and a plurality of teeth on its inner side, the annular member surrounds the plurality of peripheral gears and the central gear, the plurality of teeth on its inner side mesh with the plurality of peripheral gears, and the input portion of the torque conversion mechanism is arranged on the side of the annular member facing the driven member.

11. Further, it includes an external gear ring, a spring wheel and a scroll spring, the external gear ring is connected to the driven member and can rotate together with the driven member, and the driven member can move in the axial direction of the reel relative to the external gear ring; The spring wheel is operatively connected to the external gear ring, one end of the scroll spring is fixed to the base, and the other end is fixed to the spring wheel, and the scroll spring is wound in a substantially coil shape around the spring wheel as an axis, and can be tightened or loosened according to different rotation directions of the spring wheel; When the second transmission member receives a force to rotate the driven member, the external gear ring is driven by the driven member to rotate synchronously, and rotates the spring wheel in the energy storage direction to gradually loosen the scroll spring; at this time, when the second transmission member no longer receives a force, the spring wheel rotates in the direction opposite to the energy storage direction under the action of the rewinding elastic force of the scroll spring, and rotates the driven member in the negative rotation direction via the external gear ring, and the scroll spring is gradually tightened on the spring wheel; 2. The curtain operating mechanism of claim 1, wherein when the drive member is located at the third position and the driven member rotates in a negative rotation direction, the driven member does not drive the connected drive connecting member to rotate, and when the drive member is located at the fourth position and the driven member rotates in a negative rotation direction, the driven member does not drive the connected input part of the torque conversion mechanism to rotate.

12. the second transmission member is a lifting cord, the driven member has a body and an annular groove formed on an outer periphery of the body, and one end of the lifting cord is fixed to the driven member so that the lifting cord can be wound into or unwound from the annular groove when the driven member rotates; 2. The curtain operating mechanism of claim 1, wherein the drive member has a plurality of hooks on the inside of the annular body thereof, the plurality of hooks engaging with and connecting to the annular groove of the driven member in the axial direction of the reel, and at the same time being able to slide circumferentially within the annular groove, thereby enabling the drive member and the driven member to rotate relative to each other around the axial direction of the reel when each is subjected to a force.

13. 2. The curtain operating mechanism according to claim 1, wherein the first transmission member is a turning cord, one end of the turning cord is fixed to the drive member, and the other end extends from the base and receives a force to rotate the drive member.

14. A curtain comprising a reel and a curtain operating mechanism, the curtain operating mechanism is used to operate the opening and closing of the curtain, and includes a drive connecting member, a base, a torque conversion mechanism, a drive member, and a driven member; the drive connection member is fixedly connected to one end of the reel so that the reel can rotate together with the drive connection member; the base includes a plurality of first guide structures; the torque conversion mechanism includes an input portion and an output portion, the output portion being interlockably connected to the drive connection member, and when the input portion of the torque conversion mechanism is driven to rotate, the output portion rotates in a direction opposite to that of the input portion, and the output portion rotates the drive connection member in the same direction; the driven member is provided within the base so as to be rotatable in the axial direction of the reel, the drive member includes an annular body, a plurality of second guide structures, a first transmission member, and a second transmission member; the annular body surrounds the driven member and is connected to the driven member in the axial direction of the reel so that the driven member can follow the drive member and move synchronously along the axial direction of the reel, and the annular body and the driven member are rotatable relative to each other about the axial direction of the reel when each receives a force; the second guide structures are provided on the outer peripheral surface of the annular body, are respectively coupled to the first guide structures of the base, and are movable relative to the corresponding first guide structures between a first position and a second position farther from the reel than the first position in accordance with the rotation of the annular body; when the drive member rotates to move each of the second guide structures from the first position to the second position relative to the corresponding first guide structure, the drive member is synchronously guided to move from a third position along the axial direction of the reel to a fourth position farther from the reel than the third position, and moves the driven member to the input portion connected to the torque conversion mechanism; when the drive member rotates to move each of the second guide structures from the second position to the first position relative to the corresponding first guide structure, the drive member is synchronously guided to move from the fourth position to the third position along the axial direction of the reel, and moves the driven member to be connected to the drive connection member; the first transmission member has one end connected to the drive member and the other end extending from the base and receiving a force to rotate the drive member; the second transmission member has one end connected to the driven member and the other end extending from the base and receiving a force to rotate the driven member; when the one end of the first transmission member extending from the base receives a force to rotate the drive member, each of the second guide structures of the drive member moves from one of the first position and the second position to the other relative to the corresponding first guide structure, and synchronously guides the drive member to move appropriately along the axial direction of the reel; A curtain in which the one end of the second transmission member extending from the base receives a force to rotate the driven member, and at this time, when the drive member is located at the third position, the driven member rotates the connected drive connection member, thereby outputting a positive rotational torque to the reel, and on the other hand, when the drive member is located at the fourth position, the driven member rotates the connected input part of the torque conversion mechanism, thereby causing the output part of the torque conversion mechanism to output a negative rotational torque to the reel via the drive connection member.

15. the curtain operation mechanism further includes a locking mechanism provided within the base and configured to position the drive member at either the third position or the fourth position, the locking mechanism including a moving member, a locking lever, and a restoring member; the moving member has a connection end and a moving end located opposite to each other, the connection end is connected to the driving member, and a circulation groove is formed in the moving end, and when the one end of the first transmission member extending from the base receives a force and rotates the driving member, the driving member moves the moving member to move the moving end of the moving member in a first direction, One end of the lock lever is fixed to the base, and the other end is inserted into the circulation groove. the restoring member is provided between the position stop structure of the base and the moving member, and provides the moving member with an elastic force in a direction opposite to the first direction; 15. The curtain of claim 14, wherein the one end of the first transmission member extending from the base receives a force to rotate the drive member, and then, when the first transmission member no longer receives the force, the moving end of the movable member moves in a direction opposite to the first direction under the action of the elastic force until the lock lever engages with the circulation groove, and at this time, the movable member is in a stationary state, and the lock lever is located at either a positive rotation position or a negative rotation position in the circulation groove, wherein, when the lock lever is located at the positive rotation position in the circulation groove, the drive member is positioned at the third position, and when the lock lever is located at the negative rotation position in the circulation groove, the drive member is positioned at the fourth position.

16. the curtain operation mechanism further includes a locking mechanism provided in the base and configured to position the driving member at either the third position or the fourth position, the locking mechanism including a moving member, a groove body, a locking lever, and a restoring member; the moving member has a connecting end and a moving end positioned opposite to each other, the connecting end is connected to the driving member, and when the one end of the first transmission member extending from the base receives a force and rotates the driving member, the driving member moves the moving member to move the moving end of the moving member in a first direction, The groove body is fixed in the base and has a circular groove thereon; the lock lever is provided at the moving end of the moving member, extends toward the groove body, and is inserted into the circulation groove; the restoring member is provided between the position stop structure of the base and the moving member, and provides the moving member with an elastic force in a direction opposite to the first direction; 15. The curtain of claim 14, wherein the one end of the first transmission member extending from the base receives a force to rotate the drive member, and then, when the first transmission member no longer receives the force, the moving end of the movable member moves in a direction opposite to the first direction under the action of the elastic force until the lock lever engages with the circulation groove, and at this time, the movable member is in a stationary state, and the lock lever is located at either a positive rotation position or a negative rotation position in the circulation groove, wherein, when the lock lever is located at the positive rotation position in the circulation groove, the drive member is positioned at the third position, and when the lock lever is located at the negative rotation position in the circulation groove, the drive member is positioned at the fourth position.

17. The curtain operating mechanism further includes a control lever, the control lever including a fixed rod, a first rod, and a second rod; the fixed rod has a first end and a second end located opposite each other, the first end of the fixed rod being connected to the base; the first rod is fitted onto and connected to the second end of the fixed rod and is extendable and contractible relative to the fixed rod along the axial direction of the control lever, and the one end of the first transmission member extending from the base is inserted into the control lever and fixedly connected to the first rod; the second rod is fitted onto and connected to the first rod and is extendable and contractible relative to the first rod along the axial direction of the control lever, and the one end of the second transmission member extending from the base is inserted into the control lever and fixedly connected to the second rod; 15. The curtain of claim 14, wherein the drive member is rotated via the first transmission member when the first rod is projected relative to the fixed rod, and the driven member is rotated via the second transmission member when the second rod is projected relative to the first rod.

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