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, and particularly to a curtain and a curtain operating mechanism that are easy to operate, less likely to malfunction, have a simple structure, and can be used safely.

Background Art

[0002] Curtains are often used to adjust lighting or enhance privacy at openings such as windows and doors in buildings. Curtains that generally adjust the size of the shading area vertically can be divided into two forms, corded curtains and cordless curtains, depending on the curtain operating method. Corded curtains usually control their opening and closing with an annular circulating control cord, and the user can control the raising or lowering of the shading part of the curtain by pulling both sides of the control cord downward. However, if a child passes their head through the annular control cord during play, the control cord may wrap around the neck, causing an unexpected accident. To prevent risks to children, in some other commercially available corded curtains, the control cord is changed to a single suspension cord, and the user rotates the curtain controller attached to the upper beam or pulls the suspension cord at a specific angle to switch the curtain from a control mode where the shading part rises to a control mode where the shading part descends, or vice versa.

[0003] However, the top beam of a curtain is often of a certain height, making it difficult for shorter users to reach the curtain controller attached to the top beam. Furthermore, curtain operation involves at least two different directions: folding and unfolding. For the curtain controller to function, it needs to be connected to a switching mechanism within the top beam, but the switching mechanism is often of a certain size, limiting the overall appearance of the curtain. Some existing curtains use a single suspension cord that performs different functions by changing the angle at which it is pulled (for example, pulling the control cord diagonally switches the control mode, and pulling it straight raises or lowers the blackout section according to the current control mode), which can lead to operational difficulties and complexity. If the user does not know the correct pulling angle of the suspension cord, malfunctions are likely to occur. Moreover, even with a single suspension cord, as long as a certain length of the control cord is exposed outside the top beam, a child's neck could get entangled in the cord, potentially leading to an unexpected accident. [Overview of the project] [Problems that the invention aims to solve]

[0004] In view of the conventional problems described above, the present invention aims to provide a curtain and a curtain operating mechanism. The curtain operating mechanism allows the user to operate two separate operating members corresponding to different functions, thereby reducing confusion and errors during operation. Furthermore, it solves the problem of conventional corded curtains being complex and prone to errors due to providing various operating modes simultaneously with a single suspension cord. At the same time, the curtain and curtain operating mechanism of the present invention solve the problems of conventional curtain controllers being adjacent to the upper beam and difficult to reach, as well as the large size of the switching mechanism connected to and located within the upper beam, and the safety risks that a ring-shaped control cord poses to children. [Means for solving the problem]

[0005] An object of the present invention is to provide a curtain and a curtain operating mechanism therefor. The curtain comprises a reel and the curtain operating mechanism. The curtain operating mechanism comprises a driving connecting member, a base, a torque conversion mechanism, a driven member, a driving member, a first transmission member, and a second transmission member. The driving connecting member is fixedly connected to one end of the reel of the curtain so that the reel can rotate together with the driving connecting member. The base comprises a plurality of first guide structures, the first guide structures are preferably guide rails, the first transmission member is a deflection cord, and the second transmission member is preferably a lifting cord.

[0006] The torque conversion mechanism has an input section and an output section, the output section being connected to the drive connecting member in a manner that allows it to be linked. When the input section of the torque conversion mechanism is driven and rotates, the output section rotates in the opposite direction to the input section, and the output section rotates the drive connecting member in the same direction. The driven member is provided in the base so as to be rotatable in the axial direction of the reel, and the drive member comprises an annular body and a plurality of second guide structures, preferably each of the second guide structures being a projection. 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 along the axial direction of the reel together with the drive member, 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 force.

[0007] The plurality of second guide structures are provided on the outer circumferential surface of the annular body and each is coupled to the plurality of first guide structures of the base and is movable between a first position and a second position relative to the corresponding first guide structure in accordance with the rotation of the annular body, the second position being further from the reel than the first position. When the drive member rotates and moves 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 axial direction of the reel from the third position to a fourth position further from the reel than the third position, and moves the driven member to the input section connected to the torque conversion mechanism. Conversely, when the drive member rotates and moves 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 axial direction of the reel from the fourth position to the third position, and moves the driven member until it is connected to the drive connecting 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 the drive member and rotate it. When the drive member rotates, each of the second guide structures moves from one of the first and second positions 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. 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 the driven member and rotate it. When the drive member is in the third position and the driven member is rotating, the driven member outputs a positive rotational torque to the reel by driving the connected drive connector to rotate it. In contrast, when the drive member is positioned in the fourth position and the driven member is rotated, the driven member drives and rotates the input section of the connected torque conversion mechanism, thereby rotating the output section of the torque conversion mechanism in the opposite direction to the input section, and outputs a negative rotational torque to the reel via the drive connecting member.

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

[0010] In one embodiment of the present invention, the curtain operating mechanism further comprises a locking mechanism. The locking mechanism is provided in the base and positions the drive member to either the third position or the fourth position. The locking mechanism comprises a moving member, a locking lever, and a return member. The moving member has a connecting end and a moving end located on opposite sides of each other, the connecting end being connected to the drive member, and a circulation groove being provided at the moving end of the moving member. When the one end of the first transmission member extending from the base receives a force that rotates the drive member, the drive member moves the moving member, causing the moving end of the moving member to move in the first direction. One end of the locking lever is fixed to the base, and the other end is inserted into the circulation groove. The return member is provided between the positioning structure of the base and the moving member and provides an elastic force to the moving member in the direction opposite to the first direction. The one end of the first transmission member extending from the base receives a force that rotates the drive member, and after the first transmission member no longer receives a force, the moving end of the moving member moves in the opposite direction to the first direction under the action of the elastic force until the lock lever engages with the circulation groove, at which point the moving member is stationary and the lock lever is located in either the positive rotation position or the negative rotation position in the circulation groove. When the lock lever is located in the positive rotation position in the circulation groove, the drive member is positioned in the third position. When the lock lever is located in the negative rotation position in the circulation groove, the drive member is positioned in the fourth position.

[0011] In another embodiment of the present invention, the locking mechanism comprises a moving member, a groove body, a locking lever, and a return member. The moving member has a connecting end and a moving end located opposite each other, the connecting end being connected to the drive member, and when the one end of the first transmission member extending from the base receives force and rotates the drive member, the drive member moves the moving member such that the moving end of the moving member moves in a first direction. The groove body is fixed within the base and has a circulation groove provided thereon. The locking lever is provided on the moving end of the moving member, extends from the moving end toward the groove body and is inserted into the circulation groove. The return member is provided between the base's positioning structure and the moving member and provides the moving member with elastic force in the direction opposite to the first direction. The one end of the first transmission member extending from the base receives a force that rotates the drive member, and thereafter the first transmission member no longer receives a force, the moving end of the moving member moves in the opposite direction to the first direction under the action of the elastic force until the lock lever engages with the circulation groove, at which point the moving member is stationary and the lock lever is located in either the positive rotation position or the negative rotation position in the circulation groove. When the lock lever is located in the positive rotation position in the circulation groove, the drive member is positioned in the third position, and when the lock lever is located in the negative rotation position in the circulation groove, the drive member is positioned in the fourth position.

[0012] Preferably, the bottom of the circulation groove has a stepped structure between the positive rotation position and the negative rotation position, and at the same time has another stepped structure between the negative rotation position and the positive rotation position that gradually deepens from a shallower position, so that the 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 in the circulation groove.

[0013] Preferably, the drive member has a toothed portion on the outer circumferential surface of the annular body. The moving member includes a rack, and the connecting end of the moving member is located on the rack and connected by engaging with the toothed portion.

[0014] Preferably, the moving member includes a positioning flange located between the connecting end and the moving end. The return member is provided between the positioning structure of the base and the positioning flange. When the moving end of the moving member moves in the first direction, the distance between the positioning flange and the positioning structure changes, causing the return member to elastically deform.

[0015] In one embodiment of the present invention, the curtain operating mechanism further comprises a control lever, the control lever comprising a fixed rod, a first rod, and a second rod, the fixed rod having a first end and a second end located opposite to each other, the first end being connected to the base in a manner that allows it to swing or rotate relative to the base. The first rod is fitted and 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 fitted and connected to the first rod and is extendable and retractable relative to the first rod along the axial direction of the control lever. 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 is extended from the fixed rod, the first rod rotates the drive member via the moving first transmission member. Simultaneously, one end of the second transmission member extending from the base is inserted into the control lever and fixedly connected to the second rod. When the second rod extends from the first rod, the second rod rotates the driven member via the moving second transmission member.

[0016] Preferably, the control lever further comprises an elastic partition member, the ends of which abut between the rod position limiting structure of the first rod and the end face of one end of the second rod that is fitted and connected to the first 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 in sync. The length of the non-overlapping section is always greater than the length after the elastic partition member is fully compressed.

[0017] In one embodiment of the present invention, the curtain operating mechanism further comprises a winding unit. The winding unit comprises an external gear ring, a spring wheel, and a scroll spring. The external gear ring is connected to the driven member and is rotatable together with the driven member, and the external gear ring is connected to the driven member in such a manner that the driven member is movable relative to the external gear ring along the axial direction of the reel. The spring wheel is connected to the external gear ring in a manner that allows for interlocking. 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 with the spring wheel as its axis, 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 rotates synchronously with the driven member and rotates the spring wheel in the energy storage direction, 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 opposite direction to the energy storage direction under the action of the rewinding elastic force of the scroll spring, and rotates the driven member in the opposite direction via the external gear ring, and the scroll spring is gradually tightened on the spring wheel. When the drive member is in the third position and the driven member rotates in the opposite direction, the driven member does not drive the connected drive connecting member, and when the drive member is in the fourth position and the driven member rotates in the opposite direction, the driven member does not drive the input part of the connected torque conversion mechanism. [Effects of the Invention]

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

[0019] 1) When operating the curtain via a single operation code, it is impossible to properly utilize the functions without changing the angle and pulling the curtain. In contrast, in the present invention, corresponding operation members (i.e., the first transmission member and the second transmission member) are provided so that the user can operate them according to the functions, thus making it less likely to cause operational confusion or malfunction.

[0020] 2) The curtain operating mechanism of the present invention has an annular body that surrounds the driven member with its driving member, so the overall size of the mechanism is reduced. When installed in the upper beam, it does not occupy extra space and does not limit the overall appearance design of the curtain.

[0021] 3) The curtain and its curtain operating mechanism of the present invention do not have an annular control code that poses a safety threat to children. In particular, when the first transmission member and the second transmission member are completely covered by the control lever, no code is exposed for the entire curtain, thus completely avoiding the risk of the code getting entangled around a child's neck.

Brief Description of the Drawings

[0022] [Figure 1] It is a partially exploded perspective view showing a first embodiment of the curtain and its curtain operating mechanism of the present invention. [Figure 2] It is a view of the curtain in FIG. 1, showing a partial omission of the curtain body and a part of the upper beam. [Figure 3] It is an exploded perspective view of the curtain operating mechanism in FIG. 1. [Figure 4] It is an exploded perspective view of the curtain operating mechanism in FIG. 1 shown from another angle. [Figure 5] It is a perspective view showing the first housing of the base in FIG. 4. [Figure 6] It is a perspective view showing the second housing of the base in FIG. 3. [Figure 7] It is a perspective view showing the central gear in FIG. 3. [Figure 8] It is a perspective view showing the driving member in FIG. 3. [Figure 9A]It is a front view showing the curtain operating mechanism of FIG. 1. [Figure 9B] It is a plan view showing the curtain operating mechanism of FIG. 1. [Figure 10] It is a partial cross-sectional view taken along line A-A of FIG. 9B. [Figure 11A] It is a side view of the curtain operating mechanism of FIG. 1, showing it with the control lever omitted. [Figure 11B] It is a cross-sectional view taken along line C-C of FIG. 11A, in which the protrusion of the drive member is located at the first position. [Figure 12A] It is a side view of the curtain operating mechanism of FIG. 1, showing it with the control lever omitted. [Figure 12B] It is a cross-sectional view taken along line D-D of FIG. 12A, in which the protrusion of the drive member is located at the second position. [Figure 13] It is a cross-sectional view taken along line B-B of FIG. 9B, with the control lever omitted, in which the drive member is located at the third position. [Figure 14] It is a schematic cross-sectional view showing the curtain operating mechanism when the drive member is located at the fourth position. [Figure 15] It is a partial perspective view of the curtain operating mechanism of FIG. 1, showing it with the first housing omitted. [Figure 16] It is a perspective view showing the moving member of FIG. 15. [Figure 17A] It is a perspective view showing the moving member of FIG. 15 from another viewpoint. [Figure 17B] It is a perspective view showing the moving member of FIG. 15 from another viewpoint. [Figure 18] It is a schematic view showing the relative position in the circulation groove of the lock lever of FIG. 15. [Figure 19] It is an exploded schematic view showing the second embodiment of the curtain operating mechanism of the present invention, showing it with the first transmission member and the second transmission member omitted. [Figure 20] It is a schematic view showing the case where the guide rail of the drive member of FIG. 19 is located at the second position. [Figure 21]Figure 19 is a schematic diagram showing the case where the guide rail of the drive member moves from a second position to a first position relative to the projection on the base. [Figure 22] Figure 19 is a perspective view of the curtain operating mechanism, with the first housing, first transmission member, and second transmission member omitted. [Figure 23] Figure 19 is a schematic diagram showing the relative position of the groove body of the lock lever within the circulation groove. [Figure 24] This is a partially exploded perspective view showing a third embodiment of the curtain and its curtain operating mechanism according to the present invention. [Modes for carrying out the invention]

[0023] The technical content and features of the present invention will now be described in detail with reference to the drawings, based on several embodiments. As shown in Figures 1 and 2, in a first embodiment of the present invention, the 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 has two upper beam side covers 222. The reel 240 extends along an axis A1 and is rotatable about the axis A1 in a positive rotation direction D1 and a negative rotation direction D2 that are opposite to each other. In this embodiment, the reel 240 is an extruded aluminum tube, and a hollow projection extends longitudinally from its inner circumferential surface to form a non-circular inner circumferential edge. One end of the curtain body 260 is fixed to the reel 240, and when the reel 240 rotates about the axis A1, the curtain body 260 is wound onto the reel 240 or released from the reel 240, thereby enabling the folding and unfolding of the curtain 200.

[0024] As shown in Figures 2 to 4, the curtain operating mechanism 100 is located within the upper beam 220 and is provided at one end of the reel 240, and comprises a base 1, a drive connecting member 2, a torque conversion mechanism 3, a driven member 4, a drive member 5, a control lever 6, a locking mechanism 7, and a winding unit 8. Of these, the base 1 is composed of a first housing 11 and a second housing 12 that lock and engage with each other, and the second housing 12 has a shaft hole 121. The torque conversion mechanism 3, the driven member 4, the drive 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] As shown in Figure 2, the outer circumferential contour of the drive connecting member 2 engages with and fixes the inner circumferential edge of the reel 240, thereby allowing the reel 240 to rotate together with the drive connecting member 2. This allows the drive connecting member 2 to output either a positive or negative rotational torque to the reel 240, the positive rotational torque causing the reel 240 to rotate in the positive rotational direction D1, and the negative rotational torque causing the reel 240 to rotate in the negative rotational direction D2. As shown in Figure 3, the other end of the drive connecting member 2 that engages with and fixes the reel 240 is inserted into the base 1 by passing through the shaft hole 121 of the second housing 12, and the end face of the one end of the drive connecting member 2 that is inserted into the base 1 has a first ratchet structure 21 and a first latch structure 22. In the following explanation, "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 is also applicable 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 reel of the blind is a solid shaft, which works in cooperation with the winding shaft to wind up or release the lifting cord, thereby enabling the folding and unfolding of the blind. The drive connecting member has a non-circular hole (not shown), and the solid shaft has a non-circular cross-section and is inserted into the non-circular hole of the drive connecting member, thereby preventing the solid shaft from rotating relative to the drive connecting member. Furthermore, a pin can be inserted through the overlapping position of the solid shaft and the drive connecting member to prevent the solid shaft from moving axially relative to the drive connecting member. As a result, the drive connecting member is fixedly connected to one end of the solid shaft, and when the drive connecting member rotates, the solid shaft follows and rotates together with the drive connecting member.

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

[0028] The torque conversion mechanism of the curtain operating mechanism according to the present invention comprises an input section and an output section that is movably connected to the drive connecting member. When the input section of the torque conversion mechanism is driven and rotates, the output section rotates in the opposite direction to the input section and rotates the drive connecting member in the same direction. As shown in Figures 3, 4, and 7, in this embodiment, the torque conversion mechanism 3 comprises a central gear 31, a plurality of outer gears 32, an annular member 33, a connecting ring 34, and a support base 35. The central gear 31 is rotatably fitted onto the pivot shaft 111 of the first housing 11 with respect to the pivot shaft 111, and comprises a meshing portion 311 and a shaft portion 312. The shaft portion 312 is cylindrical, extends along the axis A1 from the meshing portion 311 toward the reel 240, and a second latch structure 313 is radially disposed at its end. Of these, the second latch structure 313 corresponds to the output section of the torque conversion mechanism 3. Each of the multiple outer circumferential gears 32 meshes with the meshing portion 311 of the central gear 31 and is arranged in an annular shape around the outer circumference of the central gear 31. Each of the multiple shaft columns 113 of the first housing 11 is inserted into the multiple insertion holes 351 of the support base 35, passing through the multiple outer circumferential gears 32, thereby fixing the multiple outer circumferential gears 32 within the base 1 so as to be rotatable with respect to the support base 35 around the shaft columns 113. The annular member 33 is annular in shape, 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 circumferential gears 32 and the central gear 31, and the multiple teeth on its inner side mesh with the multiple outer circumferential gears 32.

[0029] As shown in Figures 3 and 4, the connecting ring 34 has an outer latch structure 341 and an inner latch structure 342 on its outside and inside, respectively. The outer latch structure 341 engages with and connects to the first latch structure 22 of the drive connecting member 2, and the inner latch structure 342 engages with and connects to the second latch structure 313 of the shaft portion 312 of the central gear 31. In other words, the central gear 31 can establish a synchronous transmission relationship with the drive connecting member 2 via the connecting ring 34. In this case, when the central gear 31 rotates, the drive connecting member 2 can follow the central gear 31 and rotate together in the same direction. 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 engage with the first latch structure of the drive connecting member, thereby directly establishing a synchronous transmission relationship between the central gear and the drive connecting member without the connecting ring.

[0030] As shown in Figures 3 and 4, the driven member 4 comprises a main body 41, a plurality of first elastic arms 42, and a plurality of second elastic arms 43. The main body 41 is circular in shape and has a central hole 411, an annular groove 412, and a first coupling structure 413, the annular groove 412 being provided on the outer edge of the main body 41, and the first coupling structure 413 may be a plurality of protrusions, and is uniformly arranged in an annular shape on the main body 41 with the axis A1 as the axis, and the plurality of first elastic arms 42 and the plurality of second elastic arms 43 are provided on opposite sides of the main body 41, facing and backing the drive connecting member 2, respectively. The main body 41 is fitted onto the support column 352 of the support base 35 by 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 second elastic arms 43 is three each, but the number of first elastic arms or second elastic arms of the driven member may be two or more, as long as they are arranged on the main body at a circular angle of 180 degrees with respect to the axis A1.

[0032] In this embodiment, the first elastic arm 42 and the second elastic arm 43 are independent components each having a fixed end and a free end located on opposite sides of each other, the fixed end being connected to the main body 41 by engagement, and the free end being elastically pivotable relative to the fixed end when subjected to force. In some other embodiments of the present invention, the first elastic arm and the second elastic arm are structures molded integrally with the main body of the driven member, each having a fixed end and a free end located on opposite sides of each other, the fixed end being connected to the main body of the driven member, and the free end being elastically pivotable relative to the fixed end when subjected to force.

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

[0034] The curtain operating mechanism 100 according to the present invention further comprises 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 can be connected to and surround at least a portion of the circumferential surface of the drive member 5, and the other end extending from the base 1 and 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 extending from the base 1 and inserted into the control lever 6.

[0035] As shown in Figures 9A and 10, the control lever 6 comprises 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 on opposite sides of each other, and the first end E1 is connected to the base 1 via the universal joint 64, so that the fixed rod 61 can 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, so that the first rod 62 can 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, which is connected to the drive member 5, passes through the universal joint 64 and is inserted into the fixed rod 61, and the steering cord 140 is fixed to the first end plug 621 of the first rod 62 while remaining taut. In this way, when the first rod 62 is pulled out relative to the fixed rod 61 along the axial direction of the control lever 6, the steering cord 140 is pulled synchronously, causing the first rod 62 to rotate the drive member 5 via the moving steering cord 140.

[0036] As shown in Figure 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, so that the second rod 63 can 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 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 remains under tension. As 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, causing the second rod 63 to rotate 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 lifting 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. In other words, the second end plug can be selectively positioned at the upper or lower end of the second rod.

[0038] As shown in Figures 10 to 14, when the first rod 62 is pulled out relative to the fixed rod 61 and the drive member 5 is rotated, each of the multiple projections 52 of the drive member 5 is guided by the corresponding guide rail 13 and moves between a first position P1 (see Figure 11B) and a second position P2 (see Figure 12B), with the second position P2 being further from the reel 240 than the first position P1. As the drive member 5 rotates and moves each projection 52 from the first position P1 to the second position P2, the drive member 5 itself moves along the axis A1 from the third position P3 (see Figure 13) to a fourth position P4 (see Figure 14), which is further from the reel 240 than the third position P3, in synchronization with the displacement of the multiple projections 52, thereby moving the driven member 4 toward the annular member 33. In contrast, when the drive member 5 rotates and moves each projection 52 from the second position P2 to the first position P1, the drive member 5 itself moves along the axis A1 from the fourth position P4 to the third position P3 in synchronization with the displacement of the multiple projections 52. The reason why the multiple projections 52 and the multiple guide rails 13 of the base 1 must be uniformly arranged around the axis A1 is to make the force applied to the drive member 5 as uniform as possible during rotation so that the axial direction of the annular body 51 remains parallel to the axis A1 while the drive member 5 moves along the axis A1.

[0039] Referring simultaneously to Figures 3, 4, 10, and 13, when the drive member 5 is in the third position P3, the second rod 63 is pulled out relative to the first rod 62, causing the driven member 4 to rotate in the positive rotational direction D1. The driven member 4 then connects to the first ratchet structure 21 of the drive connecting member 2 via a plurality of first elastic arms 42, causing the drive connecting member 2 to rotate in the same direction in the positive rotational direction D1, thereby outputting the positive rotational torque to the reel 240. In this embodiment, when the reel 240 rotates in the positive rotational direction D1 due to the positive rotational torque, the curtain body 260 is wound up, causing the curtain body 260 to rise. Therefore, the position of the drive member 5 in the third position P3 means that the curtain 200 is in the curtain folding control mode.

[0040] Referring simultaneously to Figures 3, 4, 10, and 14, when the drive member 5 is in the fourth position P4, the second rod 63 is pulled out relative to the first rod 62, causing the driven member 4 to rotate in the positive rotational direction D1. The driven member 4 then rotates the annular member 33 in the same direction in the positive rotational direction D1 by coupling with the second ratchet structure 331 of the annular member 33 via a plurality of second elastic arms 43. When the annular member 33 rotates in the positive rotational direction D1, the central gear 31 rotates in the negative rotational direction D2 via a plurality of outer circumferential gears 32, causing the central gear 31 to output the negative rotational torque to the reel 240 via the connecting ring 34 and the drive connecting member 2. Of these, the second ratchet structure 331 of the annular member 33 functions as the input part of the torque conversion mechanism 3, and the second latch structure 313 of the central gear 31 functions as the output part of the torque conversion mechanism 3. In this embodiment, when the reel 240 rotates in the negative rotation direction D2 due to the negative rotation torque, the curtain body 260 is released and lowered. Therefore, the position of the drive member 5 in the fourth position P4 means that the curtain 200 is in the curtain deployment control mode.

[0041] The curtain control mode according to the present invention is always in one of the following modes: the curtain folding control mode and the curtain unfolding control mode. In this embodiment, the positive and negative rotations of the reel 240 correspond to the folding and unfolding of the curtain body 260, which is merely a structural setting; the settings may be reversed.

[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 plurality of outer circumferential 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 can be replaced with any mechanism that can achieve a similar effect. For example, in another embodiment of the present invention, the driving member and the driven member are mounted on the side of the annular member of the torque conversion mechanism away from the reel. At the same time, as the input part of the torque conversion mechanism, the second ratchet structure of the annular member is positioned on the side of the annular member facing the driven member in order to connect to the driven member in a particular control mode.

[0043] In another embodiment of the present invention, the torque conversion mechanism does not include the annular member and comprises only a central gear and an outer gear, wherein the central gear includes a meshing portion and a shaft portion extending from the meshing portion toward the reel, the end of which functions as the output portion of the torque conversion mechanism and is connected by engaging with the drive connecting member. Based on the shaft portion, it may also be connected to the drive connecting member in other ways to transmit power, and the axis of the shaft portion is not necessarily limited to coinciding 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 Figure 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 drive member is in the fourth position, the driven member is driven and rotates, and the driven member is coupled to the wheel surface ratchet structure (not shown) and rotates the outer circumferential gear in the same direction.

[0044] Referring to Figures 15 and 16, as well as Figures 3 to 6, when the drive member 5 is driven by the deflection cord 140 and rotates, the drive member 5 always rotates in the same specific direction (in this embodiment, the positive rotation direction D1), and then the locking mechanism 7 moves the drive member 5 to the third position P3 or the fourth position P4 for positioning. In this embodiment, the locking mechanism 7 comprises a moving member 71, a locking lever 72, and a return member 73, the moving member 71 having a block 711 and a rack 712 extending upward from the block 711. Simultaneously, the moving member 71 has a connecting end CE and a moving end ME located on opposite sides of each other, the connecting end CE being located on the rack 712 and meshing with and connected to the drive member 5, and the moving end ME being located on the block 711 and provided with a circulation groove 713. When the drive member 5 is driven by the deflection cord 140 and rotates, it moves the moving member 71 in the first direction D3, and at this time, the moving end ME of the moving member 71 also moves toward the first direction D3. The block 711 has a recess 714 on the side opposite to the side where the circulation groove 713 is provided. The rack 712 has a positioning projection 7121 on the side opposite to the side that engages with and connects to the drive member 5. The positioning projection 7121 can work in cooperation with the position limiting structure of the base 1 to restrict the movement of the moving member 71 to only the first direction D3.

[0045] Referring again to Figures 15 and 16, as well as Figure 5, the first housing 11 further comprises an arc-shaped fixing piece 115, a positioning structure 116, and a lock lever fixing structure 117. The arc-shaped fixing piece 115 prevents the annular body 51 of the drive member 5 from being deformed by force during rotation, thus preventing smooth rotation. The lock lever 72 can be made of a material with a certain degree of rigidity, for example, a steel wire or a hard plastic rod, with one end fixed to the lock lever fixing structure 117 of the first housing 11 and the other end inserted into the circulation groove 713. The return member 73 may be a spring, and is positioned 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 return member 73 is partially housed within the recess 714, with both ends in contact with the first contact surface 1161 of the positioning structure 116 and the second contact surface 7141 of the recess 714, respectively.

[0046] Referring to Figures 17A to 18 in addition to Figure 15, when the steering cord 140 receives force and rotates the drive member 5, the drive member 5 moves the moving member 71, causing the moving end ME of the moving member 71 to move toward the first direction D3. Then, when the steering cord 140 is no longer receiving force, the return member 73 applies an elastic force to the moving member 71 in the opposite direction to the first direction D3, causing the moving member 71 to move toward approximately the opposite direction 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 in the positive rotation position P5 or the negative rotation position P6 within the circulation groove 713.

[0047] More specifically, if the lock lever 72 is initially positioned at the positive rotation position P5 within the circulation groove 713, the above operation changes the relative position between the lock lever 72 and the moving member 71, causing the lock lever 72 to be positioned at the negative rotation position P6 within the circulation groove 713. Conversely, if the lock lever 72 is initially positioned at the negative rotation position P6 within the circulation groove 713, the above operation changes the relative position between the lock lever 72 and the moving member 71, causing the lock lever 72 to be positioned at the positive rotation position P5 within the circulation groove 713. During the above operation, the circulation groove 713 of the moving member 71 slides against the lock lever 72, so that the lock lever 72 remains stationary, and the relative sliding induces a slight displacement of the moving end ME of the moving member 71 during reverse movement caused by the elastic force of the return member 73, so that the moving member 71 stops and is positioned at a different position each time, and the lock lever 72 is locked at a different position in the circulation groove 713. When the lock lever 72 is locked at the positive rotation position P5 in the circulation groove 713, the drive member 5 is positioned at the third position P3, and when the lock lever 72 is locked at the negative rotation position P6 in the circulation groove 713, the drive member 5 is positioned at the fourth position P4.

[0048] In summary, each time the drive member 5 is driven by the deflection cord 140 and rotates, the locking mechanism 7 switches the drive member 5 from one of the third position P3 and the fourth position P4 to the other, and accordingly switches the curtain 200 between the curtain folding control mode and the curtain unfolding control mode. Furthermore, each time the downward pulling operation of the deflection 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 in which the driven member 4 rotates freely when the lifting cord 160 is pulled downward.

[0049] Referring to Figures 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, it 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 the smooth sliding of the circulation groove 713 relative to the lock lever 72, so that the lock lever 72 is ultimately engaged and connected to either the positive rotation position P5 or the negative rotation position P6 within the circulation groove 713, and so that the lock lever 72 is not engaged and connected to any position other than the positive rotation position P5 or the negative rotation position P6 within the circulation groove 713. In this way, it is more certain that the drive member 5 is positioned to only one of the third position P3 and the fourth position P4, and after the downward pulling operation of the deflection cord 140 is completed, the curtain 200 is always maintained in either the curtain folding control mode or the curtain unfolding control mode.

[0050] Figures 19 to 23 show a second embodiment of the curtain operating mechanism of the present invention. As shown in Figures 19 to 23, in this embodiment, the curtain operating mechanism 100' differs from the curtain operating mechanism 100 in the first embodiment mainly in the locking mechanism, and the guide structure when the base and the drive member work together is also different. The curtain operating mechanism 100' is applied to a curtain (not shown) having a reel (not shown) that extends along an axis A2 and is rotatable about axis A2, and the curtain operating 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' comprises a first housing 11' and a second housing 12'. The first housing 11' has a support shaft 111' extending along the axis A2, three projections 112' (only one of which is shown) uniformly arranged in an annular shape around the support shaft 111', and a groove body fixing structure 113'. The drive member 5' of the curtain operating mechanism 100' has an annular body 51' and three guide rails 52' (only two of which are shown). Each of the multiple guide rails 52' is formed recessed inward along the radial direction of the annular body 51' on the outer circumferential surface of the annular body 51' and is uniformly arranged on the outer circumferential surface of the annular body 51', so that every two of them form a circular angle of approximately 120 degrees with respect to the center of the annular body 51'. The outer circumferential surface of the annular body 51' further has a pivot portion 511'.

[0051] Continuing with reference to Figures 19 to 23, the three guide rails 52' of the drive member 5' are each connected to the three projections 112' of the first housing 11', so that, as shown in Figure 21, each guide rail 52' can move between a first position P1' and a second position P2' relative to the corresponding projection 112' in accordance with the rotation of the annular body 51' of the drive member 5'. Of these, the second position P2' is further away from the drive connecting member 2 than the first position P1' (i.e., relatively farther away from the curtain reel). When one end of the first transmission member (not shown) of the curtain operating mechanism 100', extending from the base 1', receives a force and rotates the drive member 5', as shown in Figure 21, it moves each of the guide rails 52' from the second position P2' to the first position P1' relative to the corresponding projection 112', and the drive member 5' moves in sync with this along the axis A2 from the fourth position P4' to the third position P3', of which the third position P3' is relatively close to the drive connecting member 2 (i.e., relatively close to the curtain reel). Conversely, when the drive member 5' rotates and moves each of the guide rails 52' from the first position P1' to the second position P2' relative to the corresponding projection 112', the drive member 5' moves in sync with this along the axis A2 from the third position P3' to the fourth position P4'.

[0052] Referring simultaneously to Figures 19, 22, and 23, in this embodiment, the locking mechanism 9 of the curtain operating mechanism 100' comprises a movable member 91, a groove body 92, and a return member 93. The movable member 91 has a connecting end CE' and a movable end ME' located on opposite sides of each other, and the connecting end CE' is connected to the pivot portion 511' of the drive member 5' in a pivotal manner. When one end of the first transmission member (not shown) extending from the base 1' receives force and rotates the drive member 5', the drive member 5' moves the movable member 91, causing the movable end ME' of the movable member 91 to move in approximately the first direction D3'. The groove body 92 is fixed to the groove body fixing structure 113', and a circulation groove 921 is provided on its surface.

[0053] Continuing with reference to Figures 19, 22, and 23, in this embodiment, the movable member 91 comprises a locking lever 911 and a positioning flange 912. The locking lever 911 is provided at the movable end ME' of the movable member 91, extends toward the groove body 92, and is inserted into the circulation groove 921. The positioning flange 912 is adjacent to the connecting end CE' of the movable member 91. In this embodiment, the upper end of the groove body fixing structure 113' also functions as a positioning structure. The return 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 movable member 91, substantially along the first direction D3'. Preferably, a position-retaining ring 180 is provided between the upper end of the groove body fixing structure 113' and the return member 93, with one end of the return member 93 in contact with the position-retaining flange 912 and the other end in contact with the upper end of the groove body fixing structure 113' via the position-retaining ring 180. When the drive member 5' rotates and moves the moving end ME' of the moving member 91 toward approximately the first direction D3', the position-retaining flange 912 approaches the position-retaining ring 180, thereby compressing the return member 93. Subsequently, when the biasing force on the moving member 91 by the drive member 5' is removed, the return member 93 applies an elastic force to the moving member 91 in the opposite direction to the first direction D3', so that the moving end ME' of the moving member 91 moves in a direction substantially opposite to the first direction D3' until the lock lever 911 engages with the positive rotation position P5' or the negative rotation position P6' in the circulation groove 921 of the groove body 92.

[0054] At this time, the drive member 5' is moved and positioned at either the third position P3' or the fourth position P4', respectively. For example, as shown in Figures 22 and 23, when the lock lever 911 is engaged at the negative rotation position P6' in the circulation groove 921 of the groove body 92, it means that 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 output of the negative rotation torque to the curtain reel. Conversely, when the lock lever 911 is engaged at the positive rotation position P5' in the circulation groove 921 of the groove body 92, it means that 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 output of the positive rotation torque to the curtain reel. The relative movement pattern between the circulation groove 921 and the lock lever 911 is similar to that of the above embodiment, however, in the above embodiment, the lock lever remains stationary while the moving member moves relative to the lock lever, whereas in this embodiment, the circulation groove 921 remains stationary while the lock lever 911 moves within the circulation groove 921 relative to the circulation groove 921.

[0055] Referring again to Figures 1, 3, 4, and 15, when the curtain 200 is in the curtain folding control mode, the user can fold the curtain 200 by repeatedly pulling out 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, the user can unfold the curtain 200 by repeatedly pulling out the second rod 63 of the control lever 6 relative to the first rod 62. During the process of repeatedly pulling out 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, a function mainly achieved by the winding unit 8.

[0056] Referring simultaneously to Figures 3, 4, and 15, the winding unit 8 comprises 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 comprising a plurality of through holes uniformly arranged in an annular shape and columnar portions positioned between the plurality of through holes. The first coupling structure 413 of the driven member 4 consists of a plurality of protrusions, each corresponding to a plurality of through holes in the second coupling structure 811 and slidable relative to the through holes. Simultaneously, the plurality of columnar portions of the second coupling structure 811 are inserted between two of the plurality of protrusions of the first coupling structure 413. As a result, the external gear ring 81 is connected to the driven member 4 and can rotate following the driven member 4, and at the same time, the driven member 4 is movable along the axis A1 relative to the external gear ring 81. The spring wheel 82 is rotatably fitted onto the fixing column 114 of the first housing 11, and the external gear ring 81 is provided with a plurality of teeth on its outer surface that mesh with the outer teeth of the spring wheel 82, thereby connecting the spring wheel 82 and the external gear ring 81 so that they can interlock with each other. Both ends of the scroll spring 83 are fixed to the first housing 11 and the spring wheel 82 of the base 1, 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 the different rotation directions of the spring wheel 82.

[0057] Referring simultaneously to Figures 3, 4, 10, and 15, 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 together in the positive rotation direction D1, and further rotates the spring wheel 82 toward the energy storage direction D4. At this time, the scroll spring 83 is tightened and stores recoil elastic force. Subsequently, when the second transmission member 160 is no longer receiving a force, the scroll spring 83 is loosened and the recoil elastic force is applied to the spring wheel 82, causing the spring wheel 82 to rotate in the opposite direction to the energy storage direction D4, and further rotating the driven member 4 toward the negative rotation direction D2 via the external gear ring 81. When the driven member 4 rotates in the negative rotational direction D2, the second rod 63 is moved in the direction of the first rod 62 via the second transmission member 160, thereby realizing the automatic extension and retraction function.

[0058] Referring to both Figure 15 and Figure 10, 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 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 first rod 62 is pulled downward, the user will inevitably move the second rod 63 downward at the same time, resulting in the two functions of switching mode and raising / lowering the curtain body being executed simultaneously, which will confuse the user during operation.

[0059] As shown in Figure 10, the first rod 62 is provided with the elastic partition member 65 to restrict the upward movement of the second rod 63 so as not to exceed the position limit position. The elastic partition member 65 is elastic and has a specific length determined by the elasticity and the position limit position. In this embodiment, the elastic partition member 65 is exemplified as a spring, with one end abutting against the rod position limiting structure of the first rod 62 (i.e., the first end plug 621) and the other end abutting against the end face of the second rod 63 which is fitted and connected to the first rod 62. The elastic partition member 65 is installed to restrict the second rod 63 to a position below the position limiting position, and as a result, the first rod 62 can maintain a non-overlapping section 622 during all operations of the control lever 6, and the non-overlapping section 622 never overlaps with the second rod 63. In other words, when the lifting cord 160 (i.e., the second transmission member) is no longer subjected to force and is wound onto the circumferential surface of the driven member 4 by the rewinding elastic force of the scroll spring 83, the wound-up lifting cord 160 maintains the non-overlapping section 622 without causing the second rod 63 to come into contact with the first end plug 621 of the first rod 62. The non-overlapping section 622 is always longer than the length of the elastic partition member 65 after it has been 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 in accordance with the change 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 guaranteed to always be able to independently perform the mode switching function by pulling the first rod 62 downward by itself, and the occurrence of 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 and second rods are in an upright position where they hang naturally without being manipulated, the lower part of the elastic partition member abuts against the end face of one end of the second rod which is fitted 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 never overlaps 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 with reference to Figures 10 and 15, as the first rod 62 is pulled downward and moves the deflection cord 140, the upper end of the elastic partition member 65 is pushed slightly downward by the rod position limiting structure of the first rod 62 (i.e., the first end plug 621), causing elastic deformation and absorbing all downward pressure, thereby holding the second rod 63 stationary relative to the first rod 62. Subsequently, when the first rod 62 is no longer subjected to force, the drive 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 steering cord 140. At the same time, the elastic partition member 65 releases its elastic force and presses against the rod position limiting structure (i.e., the first end plug 621), causing the first rod 62 to return to its original position due to the upward pulling of the steering cord 140 and the pressing action of the elastic force.

[0062] In another embodiment of the present invention, the second rod is fitted onto the outer circumferential surface of the first rod, the first rod having an outer flange extending radially from its outer circumferential surface at the 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 is fitted onto the outside of the first rod, its upper end abutting against the outer flange of the first rod and its lower end abutting against the end face of the end of the second rod that is fitted onto the first rod. When the first rod is pulled downward, the upper end of the elastic partition member is slightly compressed by the outer flange, absorbing all downward pressure and keeping the second rod stationary relative to the first rod. When the first rod is no longer subjected to force, the elastic partition member releases elastic force against the outer flange, thereby returning the outer flange to its original position. On the other hand, when the second rod is pulled downward and is 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, before reaching a position limit position without overlapping with all or most of the first rod. Throughout all of the above operations, the first rod maintains the non-overlapping section that does not overlap with the second rod by the elastic partition member, thereby avoiding erroneous operation in which different operating functions are performed simultaneously.

[0063] Figure 24 shows a third embodiment of the curtain and its operation according to the present invention. As shown in Figure 24, the curtain operation mechanism 100" in this embodiment differs from the curtain operation mechanism 100 of the first embodiment in that it does not have any control levers. 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 deflection cord 140", one end of which is fixed to a drive member (not shown) in the base 1", and the other end extends from the base 1" and is exposed to the upper beam 320, so that it can directly receive a downward pulling operation by the user and rotate the drive member (not shown) 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", and the other end extends from the base 1" and is exposed on the upper beam 320, and can directly receive a downward pulling operation by the user to rotate the driven member (not shown) in the axial direction of the curtain 300 reel.

[0064] To facilitate user identification, the directional cord 140" and the lifting cord 160" can be manufactured with different colors, materials, or designs for themselves or the handheld members 141" and 161" attached to their ends. The 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. The user can also rotate the drive member (not shown) by pulling the directional 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. While operating a single control cord requires pulling at different angles to determine the execution of different functions, the curtain operation mechanism 100" of this embodiment has two control cords, namely the turning cord 140" and the lifting cord 160", to accommodate the execution of different functions. This makes it easier for the user to learn and less prone to errors, and also solves the problem that conventional curtain controllers are often installed adjacent to the upper beam, making them difficult to reach and inconvenient to operate.

[0065] The curtains 200, 300 and their curtain operating mechanisms 100, 100', 100'' according to the present invention are configured such that the plurality of first guide structures (i.e., guide rails 13 and projections 112') of the base 1, 1', 1'' and the plurality of second guide structures (i.e., projections 52 and guide rails 52') of the drive members 5, 5' work together so that the drive members 5, 5' can rotate under force and move simultaneously in the axial direction of the reel 240 of the curtains 200, 300. Furthermore, the driven member 4 is 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 bodies 51, 51' of the drive members 5, 5' are designed to surround the driven member 4, the curtain operating mechanisms 100, 100', 100'' can be miniaturized. The curtain operating mechanisms 100, 100', 100'' according to the present invention include a first transmission member and a second transmission member that control the rotation of the drive members 5, 5' and the driven member 4, respectively. These transmission members extend from the upper beams 220, 320 of the curtains 200, 300 and are close to the user, making them easier to operate and preventing confusion by separating the operation of the two functions, switching and raising / lowering. Furthermore, since the first transmission member and the second transmission member can be covered by the control lever 6 in the curtain operating mechanisms 100, 100', 100'' according to the present invention, no cords are exposed in the curtains 200, 300 as a whole, avoiding the risk of accidental injuries to children and complying with international safety regulations related to the manufacture of curtains.

[0066] The above are merely embodiments of the present invention, and equivalent modifications made without departing from the specification and claims of the present invention should be included in 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” deflection cord (first transmission member) 160, 160” Lifting cord (second transmission member) 141", 161" Handheld parts 180 Positioning ring 1, 1', 1" bass 11, 11' First Housing 111, 111' spindle 112 First slope structure 113 Axial column 114 Fixed column 115 Arc-shaped fixing 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 mechanism 22 First latch structure 3 Torque conversion mechanism 31 Center gear 311 Mating part 312 Shaft section 313 Second latch structure 32 Outer gear 33 Annular member 331 Second ratchet mechanism 34 Connecting rings 341 External latch structure 342 Internal latch structure 35 Support base 351 Insertion hole 352 Post 4. Driven member 41 Main unit 411 Center hole 412 Ring groove 413 First bonding structure 42 First elastic arm 43. Second elastic arm 5, 5' Drive Member 51, 51' Ring 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 The second rod 631 Second end plug 64 Universal joint 65 Elastic partition member 7, 9 Locking mechanism 71, 91 Movable members 711 blocks 712 racks 7121 Positioning protrusion 713, 921 Circulation groove 7131, 7133 Gentle slope structure 7132, 7134 Step structure 714 recess 7141 Second contact surface 72, 911 Locking lever 73, 93 Return member 912 Positioning flange 92 Groove Body 8 Winding Unit 81 External gear ring 811 Second bonding structure 82 Spring Wheels 83 Scroll Spring A1,A2 axis CE, CE' connection terminals ME, ME' moving end D1, positive rotation direction D2 Negative rotation direction D3, D3' First direction D4 Energy storage 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 rotational position P6, P6' Negative rotation position

Claims

1. A curtain operating mechanism applied to a curtain having a reel for operating the opening and closing of the curtain, It 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 reel so that the reel can rotate together with the drive connecting member. The base comprises a plurality of first guide structures, The torque conversion mechanism comprises an input section and an output section, the output section being connected to the drive connecting member in a manner that it can be linked to, and when the input section of the torque conversion mechanism is driven and rotates, the output section rotates in the opposite direction to the input section, and the output section rotates the drive connecting 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 comprises an annular body and a plurality of second guide structures, 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 along the axial direction of the reel in accordance with the driving member, and the annular body and the driven member are capable of relative rotation with respect to each other about the axial direction of the reel when subjected to force. The plurality of second guide structures are provided on the outer circumferential surface of the annular body and each is coupled to the plurality of first guide structures of the base and can move in accordance with the rotation of the annular body between a first position relative to the corresponding first guide structure and a second position further from the reel than the first position, and when the drive member rotates and moves each second guide structure 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 axial direction of the reel from a third position to a fourth position further from the reel than the third position and moves the driven member to the input part connected to the torque conversion mechanism, and when the drive member rotates and moves each second guide structure 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 axial direction of the reel from the fourth position to the third position and moves the driven member to be connected to the drive connecting member, The first transmission member has one end connected to the drive member, and the other end extends from the base and receives force to rotate the drive member. The second transmission member has one end connected to the driven member, and the other end extends from the base and receives force to rotate the driven member. When one end of the first transmission member extending from the base receives a force and rotates the drive member, each of the second guide structures of the drive member moves from one of the first and second positions 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 operating mechanism wherein, when the drive member is positioned in the third position and one end of the second transmission member extending from the base receives a force that rotates 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 positioned in the fourth position and one end of the second transmission member extending from the base receives a force that rotates the driven member, the driven member drives and rotates the connected input portion of the torque conversion mechanism, causing the output portion of the torque conversion mechanism to output a negative rotational torque to the reel via the drive connecting member.

2. The base is provided with a locking mechanism for positioning the drive member to either the third position or the fourth position, the locking mechanism comprising a moving member, a locking lever, and a return member, The moving member has a connecting end and a moving end located on opposite sides of each other, the connecting end is connected to the drive member, and the moving end is provided with a circulation groove, and when the one end of the first transmission member extending from the base receives force and rotates the drive member, the drive member moves the moving member and moves the moving end of the moving member toward the first direction. The locking lever has one end fixed to the base and the other end inserted into the circulation groove. The return member is provided between the base positioning structure and the moving member, and provides the moving member with an elastic force in the direction opposite to the first direction. The curtain operating mechanism according to claim 1, wherein one end of the first transmission member extending from the base receives a force that rotates the drive member, and thereafter the first transmission member no longer receives a force, the moving end of the moving member moves in the opposite direction to the first direction under the action of the elastic force until the lock lever engages with the circulation groove, at which time the moving member is stationary and the lock lever is located in either the positive rotation position or the negative rotation position in the circulation groove, and when the lock lever is located in the positive rotation position in the circulation groove, the drive member is positioned in the third position, and when the lock lever is located in the negative rotation position in the circulation groove, the drive member is positioned in the fourth position.

3. The base is provided with a locking mechanism for positioning the drive member to either the third position or the fourth position, the locking mechanism comprising a moving member, a groove body, a locking lever, and a return member, The moving member has a connecting end and a moving end located on opposite sides of each other, the connecting end is connected to the drive member, and when the one end of the first transmission member extending from the base receives force and rotates the drive member, the drive member moves the moving member and moves the moving end of the moving member in a first direction. The groove body is fixed within the base, and a circulation groove is provided thereon. The lock lever is provided at the movable end of the movable member, extends toward the groove body, and is inserted into the circulation groove. The return member is provided between the base positioning structure and the moving member, and provides the moving member with an elastic force in the direction opposite to the first direction. The curtain operating mechanism according to claim 1, wherein one end of the first transmission member extending from the base receives a force that rotates the drive member, and thereafter the first transmission member no longer receives a force, the moving end of the moving member moves in the opposite direction to the first direction under the action of the elastic force until the lock lever engages with the circulation groove, at which time the moving member is stationary and the lock lever is located in either the positive rotation position or the negative rotation position in the circulation groove, and when the lock lever is located in the positive rotation position in the circulation groove, the drive member is positioned in the third position, and when the lock lever is located in the negative rotation position in the circulation groove, the drive member is positioned in the fourth position.

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

5. The curtain operating mechanism according to claim 2 or 3, wherein the drive member has a toothed portion on the outer circumferential 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 by engaging with the toothed portion.

6. The curtain operating mechanism according to claim 2 or 3, wherein the moving member has a position-retaining flange disposed between the connecting end and the moving end, the return member is provided between the position-retaining structure of the base and the position-retaining flange, and when the moving end of the moving member moves in the first direction, the distance between the position-retaining flange and the position-retaining structure changes, causing the return member to elastically deform.

7. The control lever further comprises a fixed rod, a first rod, and a second rod. The fixing rod has a first end and a second end located on opposite sides of each other, and the first end of the fixing rod is connected to the base. The first rod is fitted onto 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, and 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 retractable relative to the first rod along the axial direction of the control lever, and one end of the second transmission member extending from the base is inserted into the control lever and fixedly connected to the second rod, The curtain operating mechanism according to claim 1, wherein the first rod rotates the driving member via the first transmission member when the first rod is projected relative to the fixed rod, and the driven member rotates via the second transmission member when the second rod is projected relative to the first rod.

8. The curtain operating mechanism according to claim 7, wherein the control lever further comprises an elastic partition member, the elastic partition member abutting between the rod position limiting structure of the first rod and the end face of one end of the second rod that is fitted and connected to the first rod, so as to maintain 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 after the elastic partition member is fully compressed.

9. The curtain operating mechanism according to claim 1, wherein the first guide structure is one of a guide rail and a projection, and the second guide structure is the other of a guide rail and a projection.

10. The torque conversion mechanism comprises a central gear, a plurality of outer gears, and an annular member. The central gear is provided within the base so as to be rotatable in the axial direction of the reel and has a shaft portion, and the output portion of the torque conversion mechanism is located at one end of the shaft portion. The multiple outer gears are mounted within the base so as to be rotatable in the axial direction of the reel, and each meshes with and surrounds the outer circumference of the central gear. The curtain operating mechanism according to claim 1, wherein the annular member is annular in shape and has a plurality of teeth on its inner surface, the annular member surrounds a plurality of the outer gears and the central gear, the plurality of teeth on its inner surface mesh with the plurality of the outer gears, and the input portion of the torque conversion mechanism is arranged on the side of the annular member facing the driven member.

11. Furthermore, it includes an external gear ring, a spring wheel, and a scroll spring. The external gear ring is connected to the driven member and is capable of rotating together with the driven member, and the driven member is capable of moving in the axial direction of the reel relative to the external gear ring. The spring wheel is connected to the external gear ring so as to be interlocked, The scroll spring has one end fixed to the base and the other end fixed to the spring wheel, and the scroll spring is wound in a substantially coil shape with the spring wheel as its axis, 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 and rotates synchronously, and the spring wheel rotates in the energy storage direction, gradually loosening the scroll spring. At this time, when the second transmission member no longer receives force, the spring wheel rotates in the opposite direction to the energy storage direction under the action of the rewinding elastic force of the scroll spring, and the driven member rotates in the negative rotation direction via the external gear ring, and the scroll spring is gradually tightened in the spring wheel. The curtain operating mechanism according to claim 1, wherein when the driving member is in the third position and the driven member rotates in the negative rotational direction, the driven member does not drive and rotate the connected driving connecting member, and when the driving member is in the fourth position and the driven member rotates in the negative rotational direction, the driven member does not drive and rotate the connected input portion of the torque conversion mechanism.

12. The second transmission member is a lifting cord, and the driven member comprises a main body and an annular groove provided on the outer periphery of the main body, and one end of the lifting cord is fixed to the driven member so that it can be wound into the annular groove or released from the annular groove when the driven member rotates. The curtain operating mechanism according to claim 1, wherein the drive member has a plurality of hooks on the inside of the annular body, and the plurality of hooks are connected by engaging with the annular groove of the driven member in the axial direction of the reel, and at the same time can slide along the circumferential direction within the annular groove, thereby enabling the drive member and the driven member to rotate relative to each other about the axial direction of the reel when each is subjected to force.

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

14. A curtain equipped with a reel and a curtain operating mechanism, The curtain operating mechanism is used to operate the opening and closing of the curtain and 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 reel so that the reel can rotate together with the drive connecting member. The base comprises a plurality of first guide structures, The torque conversion mechanism comprises an input section and an output section, the output section being connected to the drive connecting member in a manner that it can be linked to, and when the input section of the torque conversion mechanism is driven and rotates, the output section rotates in the opposite direction to the input section, and the output section rotates the drive connecting 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 comprises an annular body and a plurality of second guide structures, 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 along the axial direction of the reel in accordance with the driving member, and the annular body and the driven member are capable of relative rotation with respect to each other about the axial direction of the reel when subjected to force. The plurality of second guide structures are provided on the outer circumferential surface of the annular body and each is coupled to the plurality of first guide structures of the base and can move in accordance with the rotation of the annular body between a first position relative to the corresponding first guide structure and a second position further from the reel than the first position, and when the drive member rotates and moves each second guide structure 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 axial direction of the reel from a third position to a fourth position further from the reel than the third position and moves the driven member to the input part connected to the torque conversion mechanism, and when the drive member rotates and moves each second guide structure 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 axial direction of the reel from the fourth position to the third position and moves the driven member to be connected to the drive connecting member, The first transmission member has one end connected to the drive member, and the other end extends from the base and receives force to rotate the drive member. The second transmission member has one end connected to the driven member, and the other end extends from the base and receives force to rotate the driven member. When the one end of the first transmission member extending from the base receives a force and rotates the drive member, each of the second guide structures of the drive member moves from one of the first and second positions 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 wherein one end of the second transmission member extending from the base receives a force and rotates the driven member, and when the drive member is in the third position, the driven member rotates the connected drive connecting member, thereby outputting a positive rotational torque to the reel, while when the drive member is in the fourth position, the driven member rotates the input portion of the connected torque conversion mechanism, causing the output portion of the torque conversion mechanism to output a negative rotational torque to the reel via the drive connecting member.

15. The curtain operating mechanism further comprises a locking mechanism provided within the base for positioning the drive member to either the third position or the fourth position, the locking mechanism comprising a moving member, a locking lever, and a return member, The moving member has a connecting end and a moving end located on opposite sides of each other, the connecting end is connected to the drive member, and a circulation groove is provided at the moving end, and when one end of the first transmission member extending from the base receives force and rotates the drive member, the drive member moves the moving member and moves the moving end of the moving member toward the first direction. The locking lever has one end fixed to the base and the other end inserted into the circulation groove. The return member is provided between the base positioning structure and the moving member, and provides the moving member with an elastic force in the direction opposite to the first direction. The curtain according to claim 14, wherein one end of the first transmission member extending from the base receives a force that rotates the drive member, and thereafter the first transmission member no longer receives a force, the moving end of the moving member moves in the opposite direction to the first direction under the action of the elastic force until the lock lever engages with the circulation groove, at which time the moving member is stationary and the lock lever is located in either the positive rotation position or the negative rotation position in the circulation groove, and if the lock lever is located in the positive rotation position in the circulation groove, the drive member is positioned in the third position, and if the lock lever is located in the negative rotation position in the circulation groove, the drive member is positioned in the fourth position.

16. The curtain operating mechanism further comprises a locking mechanism provided within the base for positioning the drive member to either the third position or the fourth position, the locking mechanism comprising a moving member, a groove body, a locking lever, and a return member, The moving member has a connecting end and a moving end located on opposite sides of each other, the connecting end is connected to the drive member, and when one end of the first transmission member extending from the base receives force and rotates the drive member, the drive member moves the moving member and moves the moving end of the moving member toward the first direction. The groove body is fixed within the base and a circulation groove is provided thereon. The lock lever is provided at the movable end of the movable member, extends toward the groove body, and is inserted into the circulation groove. The return member is provided between the base positioning structure and the moving member, and provides the moving member with an elastic force in the direction opposite to the first direction. The curtain according to claim 14, wherein one end of the first transmission member extending from the base receives a force that rotates the drive member, and thereafter the first transmission member no longer receives a force, the moving end of the moving member moves in the opposite direction to the first direction under the action of the elastic force until the lock lever engages with the circulation groove, at which time the moving member is stationary and the lock lever is located in either a positive rotation position or a negative rotation position in the circulation groove, and if the lock lever is located in the positive rotation position in the circulation groove, the drive member is positioned in the third position, and if the lock lever is located in the negative rotation position in the circulation groove, the drive member is positioned in the fourth position.

17. The curtain operating mechanism further comprises a control lever, the control lever comprising a fixed rod, a first rod, and a second rod. The fixing rod has a first end and a second end located on opposite sides of each other, and the first end of the fixing rod is connected to the base. The first rod is fitted onto 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, and 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 retractable relative to the first rod along the axial direction of the control lever, and one end of the second transmission member extending from the base is inserted into the control lever and fixedly connected to the second rod, The curtain according to claim 14, wherein the first rod rotates the drive member via the first transmission member when the first rod is projected relative to the fixed rod, and the driven member rotates via the second transmission member when the second rod is projected relative to the first rod.

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