CN217565623U - Curtain controller - Google Patents

Abstract

The application relates to a curtain controller for controlling a pull cord of a curtain, the curtain controller comprising: a housing; a drive mechanism mounted to the housing; the rotating mechanism is rotationally connected with the shell; the telescopic mechanism is movably arranged on the shell and can elastically stretch in the vertical direction, and the height difference is formed between the telescopic mechanism and the rotating mechanism in the vertical direction; the tail end of the pull rope is wound with the telescopic mechanism and hung behind the rotating mechanism, the rotating mechanism is driven to rotate through the driving mechanism so as to drive the pull rope to rotate, and the telescopic mechanism is used for providing tension for the pull rope. The curtain controller drives the rotating mechanism to rotate so as to drive the pull rope to rotate, so that the curtain is opened and closed; when the pull rope is loosened, the telescopic mechanism tensions the pull rope to enable the curtain controller to be adaptive to the loosening of the pull rope; the pull rope with a part of length can be stored through the rotating mechanism and the telescopic mechanism, the pull rope with the overlong length can be conveniently installed on the curtain controller, and the curtain controller can be conveniently installed on the wall surface of a windowsill.

Description

Curtain controller

Technical Field

The application relates to the technical field of intelligent home, in particular to a curtain controller.

Background

In the manual type (window) curtain system of current, the lower extreme that draws the pearl is the state of dangling usually, need draw through manual drawing and draw the pearl, just can make the (window) curtain switching, and the difficult control of control dynamics and direction easily causes (window) curtain system internal damage, and user experience feels relatively poor.

In view of the above problems of the manual curtain system, the prior art designs a curtain controller to drive the pull bead to rotate, but when the pull bead is too long, the pull bead is close to or exceeds the window sill, so that the proper position cannot be found to install the curtain controller.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a curtain controller for solving the problems that the existing curtain is difficult to control the opening and closing force and direction, and the curtain controller cannot be installed due to too long pulling beads.

A window covering controller for controlling a pull cord of a window covering, the window covering controller comprising:

a housing;

a drive mechanism mounted to the housing;

the rotating mechanism is rotationally connected with the shell and is in transmission connection with the driving mechanism;

the telescopic mechanism is movably arranged on the shell and can elastically stretch in the vertical direction, and the height difference is formed between the telescopic mechanism and the rotating mechanism in the vertical direction;

when the pull rope is wound on the telescopic mechanism and hung on the rotating mechanism, the driving mechanism drives the rotating mechanism to rotate so as to drive the pull rope to rotate, and the telescopic mechanism is used for providing tension for the pull rope.

The curtain controller drives the rotating mechanism to rotate so as to drive the pull rope to rotate, so that the curtain is opened and closed; because the telescopic mechanism can elastically stretch in the vertical direction, when the pull rope looses, the telescopic mechanism tensions the pull rope to enable the curtain controller to adapt to the loosening of the pull rope; the pull rope with a part of length can be stored through the rotating mechanism and the telescopic mechanism, the pull rope with the overlong length can be conveniently installed on the curtain controller, and the curtain controller can be conveniently installed on the wall surface of a windowsill.

In one embodiment, the telescopic mechanism includes a connecting frame, an elastic member and a rope winding member, the rope winding member is connected to the connecting frame and used for winding the pull rope, the connecting frame is movably arranged on the housing along the vertical direction, the elastic member is connected to the connecting frame or sleeved on the connecting frame, and the elastic member is limited in the housing.

In one embodiment, the number of the rope winding pieces is at least two, the connecting frame comprises a first connecting rod and a second connecting rod which are vertically connected, the second connecting rod is movably arranged on the shell along the vertical direction, and two ends of the first connecting rod are respectively connected with at least one rope winding piece in a rotating mode.

In one embodiment, the rotating mechanism is arranged at the top end of the shell, the elastic element is arranged inside the shell, and the connecting frame penetrates through the bottom wall of the shell, so that the rope winding elements are arranged on two sides of the bottom end of the shell.

In one embodiment, a cavity is formed in the housing, a limiting groove is formed in the cavity, and the second connecting rod movably penetrates through the cavity and is limited by the limiting groove.

In one embodiment, the limiting groove comprises a first limiting plate and a second limiting plate which are oppositely arranged, the second limiting plate is provided with a first avoidance hole, the bottom wall of the shell is provided with a second avoidance hole, and the second connecting rod penetrates through the first avoidance hole and the second avoidance hole and is limited by the first limiting plate.

In one embodiment, a third limiting plate is further disposed in the cavity and located at the bottom side of the second limiting plate, and the elastic element is limited between the third limiting plate and the second limiting plate.

In one embodiment, the third limiting plate is fixed to the second connecting rod, two opposite clamping plates extend upwards from the bottom wall of the housing, and the third limiting plate is arranged between the two clamping plates.

In one embodiment, the rope winding member is a fixed pulley, the rotating mechanism is a friction wheel, the rope winding member rotates around the first connecting rod, the first connecting rod extends along a first direction perpendicular to the vertical direction, and the rotating mechanism rotates around a second direction perpendicular to the first direction.

In one embodiment, the housing has a first side wall and a second side wall opposite to each other in the first direction, the first side wall and/or the second side wall is/are provided with a first groove extending in the vertical direction, and the first groove is used for limiting the pulling rope on one side of the rope winding piece;

the first side wall and/or the second side wall are/is provided with a second groove extending along the vertical direction, the second groove is arranged at an interval with the first groove in the second direction and is used for limiting the pull rope on the other side of the rope winding piece, and the pull rope is hung on the rotating mechanism along the first groove and the second groove.

Drawings

FIG. 1 is a schematic view of a shade controller according to an embodiment;

FIG. 2 is an internal schematic view of the shade controller of FIG. 1;

fig. 3 is an exploded view of the shade controller shown in fig. 1.

Reference numerals:

10. pulling a rope; 100. a housing; 101. a bottom wall; 101a, a second avoidance hole; 102. a first side wall; 103. A second side wall; 104. a first groove; 105. a second groove; 110. a housing chamber; 120. a limiting groove; 121. A first limit plate; 122. a second limiting plate; 122a, a first avoidance hole; 130. a third limiting plate; 200. a rotation mechanism; 300. a telescoping mechanism; 310. a connecting frame; 311. a first link; 311a, a first end; 311b, a second end; 312. a second link; 313. connecting blocks; 320. an elastic member; 330. a rope winding member; 340. a clamping and connecting plate; 400. a drive mechanism.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and that modifications may be made by one skilled in the art without departing from the spirit and scope of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.

In the description of the present application, it is to be understood that the terms "central," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and to simplify the description, but are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "initially", "connected", "secured", and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

In the manual type (window) curtain system of current, the lower extreme that draws the pearl is the state of dangling usually, need draw through manual drawing and draw the pearl, just can make the (window) curtain switching, and the difficult control of control dynamics and direction easily causes (window) curtain system internal damage, and user experience feels relatively poor.

Based on the consideration, the curtain controller is designed, automatic opening and closing of the curtain are achieved through the curtain controller, operation and use are convenient and fast, and the use feeling of a user is improved.

Referring to fig. 1, a window shade controller in one embodiment is used to control a pull rope 10 of a window shade, so as to open and close the window shade. The curtain controller comprises a shell 100, a rotating mechanism 200, a telescopic mechanism 300 and a driving mechanism 400, wherein the rotating mechanism 200 is rotatably connected to the shell 100 and is in transmission connection with the driving mechanism 400, the telescopic mechanism 300 is movably arranged on the shell 100 and can elastically stretch in the vertical direction, and the telescopic mechanism 300 and the rotating mechanism 200 have a height difference in the vertical direction.

After the rope 10 is wound around the retractable mechanism 300 and hung on the rotating mechanism 200, the driving mechanism 400 drives the rotating mechanism 200 to rotate so as to drive the rope 10 to rotate, and the retractable mechanism 300 is used for providing tension for the rope 10.

Note that the vertical direction is the Z direction shown in fig. 1. After the head end of the pull rope 10 is connected with the curtain, the tail end of the pull rope 10 naturally hangs, and the tail end of the naturally hanging pull rope 10 is wound on the telescoping mechanism 300 and the rotating mechanism 200. The pull cord 10 may be a ball pull cord or a cord pull cord (i.e., a pull cord without balls).

The curtain controller drives the rotating mechanism 200 to rotate to drive the pull rope 10 to rotate, so that the curtain is opened and closed; because the telescopic mechanism 300 can elastically stretch in the vertical direction, when the pull rope 10 is loosened, the telescopic mechanism 300 tensions the pull rope 10 to enable the curtain controller to adapt to the loosening of the pull rope 10; the pull rope 10 with a part of length can be stored through the rotating mechanism 200 and the telescopic mechanism 300, so that the pull rope 10 with overlong length can be conveniently installed on a curtain controller, and the curtain controller can be conveniently installed on the wall surface of a window sill.

Here, the telescopic mechanism 300 is disposed below the rotating mechanism 200, and there is a height difference between the telescopic mechanism 300 and the rotating mechanism 200 in the vertical direction, so that the pull cord 10 having a part of the length can be accommodated by the rotating mechanism 200 and the telescopic mechanism 300, and the pull cord 10 having an excessively long length can be conveniently mounted on the curtain controller.

Specifically, the rotating mechanism 200 is a rotating wheel, the driving mechanism 400 is a motor, and the driving mechanism 400 and the rotating mechanism 200 are coaxially arranged, so that the rotating mechanism 200 can stably move and the space can be fully utilized. In other embodiments, the driving mechanism 400 may also be a pneumatic cylinder.

In an embodiment of the present application, referring to fig. 2, the retractable mechanism 300 includes a connecting frame 310, an elastic element 320, and a rope winding element 330, the rope winding element 330 is rotatably connected to the connecting frame 310 and used for winding the rope 10, the connecting frame 310 is movably disposed on the housing 100 along the vertical direction, the elastic element 320 is connected to the connecting frame 310 or sleeved on the connecting frame 310, and the elastic element 320 is limited in the housing 100.

Thus, when the pulling rope 10 is in a tensioned state, the pulling rope 10 applies a force to the rope winding member 330 to compress the rope winding member 330, and when the pulling rope 10 is loosened, the position of the rope winding member 330 in the vertical direction can be changed by elastic expansion of the elastic member 320, so that the pulling rope 10 is always kept tensioned.

Preferably, the middle portion of the rope winding member 330 is rotatably coupled to the coupling frame 310. The elastic member 320 is a spring to enable the telescopic mechanism 300 to be elastically telescopic in the vertical direction.

In the embodiment of the present application, referring to fig. 3, the number of the rope winding members 330 is at least two, the connecting frame 310 includes a first connecting rod 311 and a second connecting rod 312 vertically connected, the second connecting rod 312 is movably disposed on the housing 100 along the vertical direction, and two ends of the first connecting rod 311 are respectively rotatably connected to at least one rope winding member 330.

It will be appreciated that the tail end of the pull cord 10 includes two branch cords that meet and form a loop. After the tail end of the rope 10 is hung on the rotating mechanism 200, two branch ropes are respectively located on different sides of the rotating mechanism 200, one branch rope is wound on the rope winding member 330 at the first end 311a of the first connecting rod 311, and the other branch rope is wound on the rope winding member 330 at the second end 311b of the first connecting rod 311. Thus, the cord 10 is smoothly installed in the window curtain controller without the two cords being twisted with each other.

The elastic member 320 is sleeved on the second link 312. When the pulling rope 10 is under tension, the pulling rope 10 will apply a force to the rope winding member 330 on the first link 311 to press the rope winding member 330; when the pull rope 10 is loosened, the second link 312 is movably inserted through the bottom wall 101 of the housing 100 in the vertical direction, and the elastic member 320 elastically expands and contracts, so that the rope winding member 330 on the first link 311 tensions the pull rope 10 to loosen the curtain controller adaptive pull rope 10.

Specifically, referring to fig. 3, the connection frame 310 further includes a connection block 313, the connection block 313 is fixed to one end of the second connection rod 312 close to the first connection rod 311, and the first connection rod 311 penetrates through the connection block 313, so that the first connection rod 311 and the second connection rod 312 are vertically connected.

Preferably, the first link 311 passes through the connection block 313, and the connection block 313 is located at the middle of the first link 311, so that the two ends of the first link 311 are stressed equally.

In this embodiment, the first connecting rod 311, the connecting block 313 and the second connecting rod 312 are all of a split structure and are detachably connected. For example, the connection block 313 and the first link 311 may be detachably connected by an interference fit or a screw-thread fit. In other embodiments, the first link 311, the connection block 313 and the second link 312 may also be an integrally formed structure, which has good integrity and is convenient for quick assembly and disassembly.

In this embodiment, the first connecting rod 311 and the second connecting rod 312 are vertically connected, and the second connecting rod 312 is connected to the middle portion of the first connecting rod 311, which is beneficial to the balance of the forces on the two ends of the first connecting rod 311. In other embodiments, the first link 311 and the second link 312 may be disposed at an angle other than 90 degrees.

In the embodiment of the present application, please refer to fig. 2 and fig. 3, the rotating mechanism 200 is disposed at the top end of the housing 100, the elastic member 320 is disposed inside the housing 100, and the connecting frame 310 penetrates through the bottom wall of the housing 100, so that the rope winding members 330 are disposed at two sides of the bottom end of the housing 100. In this way, the space utilization of the housing 100 can be improved.

In an embodiment of the present application, please refer to fig. 2 and fig. 3, a cavity 110 is disposed in the housing 100, a limiting groove 120 is disposed in the cavity 110, and the second connecting rod 312 movably penetrates through the cavity 110 and is limited by the limiting groove 120.

Thus, when the second connecting rod 312 moves along the vertical direction, the second connecting rod 312 can be limited by the limiting groove 120, and the second connecting rod 312 is effectively prevented from being damaged due to collision with the inner wall of the housing 100.

Specifically, the retaining groove 120 may be rectangular, circular, or other shapes. Here, the specific shape of the stopper groove 120 is not limited.

In this embodiment, the limiting groove 120 is disposed at a position near the lower portion of the receiving cavity 110, and at least when the second connecting rod 312 moves to the limiting position in the vertical direction, the rope winding member 330 does not contact the bottom wall 101 of the housing 100, that is, there is an extra space between the rope winding member 330 and the bottom wall 101 of the housing 100 in the vertical direction.

In other embodiments, the position of the limiting groove 120 may also be set at a position near the upper portion or the middle portion of the cavity 110, and the design is performed according to actual requirements.

More specifically, referring to fig. 3, the limiting groove 120 includes a first limiting plate 121 and a second limiting plate 122 disposed opposite to each other, the second limiting plate 122 is provided with a first avoiding hole 122a, the bottom wall 101 of the housing 100 is provided with a second avoiding hole 101a, and the second connecting rod 312 penetrates through the first avoiding hole 122a and the second avoiding hole 101a and is limited by the first limiting plate 121.

Here, the first limiting plate 121 is higher than the second limiting plate 122 in the vertical direction, and in the moving process of the second link 312, one end of the second link 312, which is far away from the first link 311, is limited by the first limiting plate 121.

In this embodiment, the first avoiding hole 122a penetrates through a side plate of the second limiting plate 122 to communicate with the outside, the second avoiding hole 101a penetrates through an edge of the bottom wall 101 of the casing 100 to communicate with the outside, and both the first avoiding hole 122a and the second avoiding hole 101a are U-shaped, so that the second connecting rod 312 is formed by penetrating through the limiting groove 120 through an opening of the first avoiding hole 122a and an opening of the second avoiding hole 101a, which facilitates assembly of the second connecting rod 312. In other embodiments, the first avoiding hole 122a and the second avoiding hole 101a may be both closed holes, that is, the first avoiding hole 122a and the second avoiding hole 101a are not communicated with the outside.

In this embodiment, the first limiting plate 121, the second limiting plate 122 and the housing 100 are integrally formed, so that the integrity is good and the quick assembly and disassembly are convenient.

Referring to fig. 3, the cavity 110 is internally provided with a third limiting plate 130 located at the bottom side of the second limiting plate 122, and the elastic member 320 is limited between the third limiting plate 130 and the second limiting plate 122.

Specifically, the elastic element 320 is sleeved on the outer periphery of the second connecting rod 312, and the elastic element 320 is elastically limited between the third limiting plate 130 and the second limiting plate 122. When the pull rope 10 is loosened, the second link 312 is movably inserted through the bottom wall 101 of the housing 100 in the vertical direction, and the elastic member 320 elastically expands and contracts, so that the rope winding member 330 on the first link 311 tensions the pull rope 10 to loosen the curtain controller adaptive pull rope 10.

In the present embodiment, the third limiting plate 130 and the second link 312 are integrally formed. In other embodiments, the third limiting plate 130 may be an integral structure with the housing 100.

In an embodiment of the present application, please refer to fig. 2 and fig. 3, the third limiting plate 130 is fixed on the second connecting rod 312, two opposite clamping plates 340 extend upward from the bottom wall of the housing 100, and the third limiting plate 130 is disposed between the two clamping plates 340.

In the embodiment of the present application, referring to fig. 2 and 3, the rope winding member 330 is a fixed pulley, the rotating mechanism 200 is a friction wheel, the rope winding member 330 rotates around the first connecting rod 311, the first connecting rod 311 extends along a first direction perpendicular to the vertical direction, and the rotating mechanism 200 rotates around a second direction perpendicular to the first direction.

In this way, the rope 10 can be smoothly wound around the expansion mechanism 300 and the rotation mechanism 200, and the rope 10 can be effectively prevented from being wound; the rope winding member 330 is a fixed pulley and the rotation mechanism 200 is a friction wheel so that the use of a ball-drawing rope or a wire-drawing rope can be satisfied at the same time. Here, the first direction is an X direction shown in fig. 2, and the second direction is a Y direction shown in fig. 2.

Specifically, referring to fig. 3, the housing 100 has a first side wall 102 and a second side wall 103 opposite to each other in the first direction, the first side wall 102 and/or the second side wall 103 is provided with a first groove 104 extending in the vertical direction, and the first groove 104 is used for limiting the pulling rope 10 on one side of the rope winding member 330. In this way, the first groove 104 limits the hanging cord 10, and prevents the cord 10 from shifting or moving relative to the housing 100, which may affect the control of the cord 10 by the window covering controller.

It can be understood that, after the tail end of the rope 10 is hung on the rotating mechanism 200, two branch ropes are respectively located on different sides of the rotating mechanism 200, wherein one branch rope extends upwards after being wound around the rope winding member 330 arranged at the first end 311a of the first connecting rod 311, and the other branch rope extends upwards after being wound around the rope winding member 330 arranged at the second end 311b of the first connecting rod 311. That is, the ropes 10 are provided on both sides of the rope winding member 330 at the first end 311a of the first link 311, and the ropes 10 are provided on both sides of the rope winding member 330 at the second end 311b of the first link 311. By providing the first groove 104, the pull rope 10 on one side of the rope winding member 330 is restrained by the first groove 104.

In this embodiment, the groove wall of the first groove 104 is an arc surface, and the depth of the first groove 104 is at least 0.5 times the diameter of the pull rope 10, so as to better match with the pull rope 10. In other embodiments, the walls of the first groove 104 may be flat, and the depth of the first groove 104 may be set to other values.

More specifically, referring to fig. 1, the first side wall 102 and/or the second side wall 103 are/is provided with a second groove 105 extending in the vertical direction, the second groove 105 is spaced from the first groove 104 in the second direction and is used for limiting the pulling rope 10 on the other side of the rope winding member 330, and the pulling rope is hung on the rotating mechanism 200 along the first groove 104 and the second groove 105.

It is understood that the rope 10 is provided on both sides of the rope winding member 330 at the first end 311a of the first link 311, and the rope 10 is provided on both sides of the rope winding member 330 at the second end 311b of the first link 311. With this arrangement, the stay 10 on one side of the rope winding member 330 is retained by the first groove 104, and the stay 10 on the other side of the rope winding member 330 is retained by the second groove 105.

In this embodiment, the groove wall of the second groove 105 is an arc surface, and the depth of the second groove 105 is at least 0.5 times of the diameter of the pull rope 10, so as to better match with the pull rope 10. In other embodiments, the walls of the second groove 105 may be flat, and the depth of the second groove 105 may be set to other values.

All possible combinations of the technical features of the above embodiments may not be described for the sake of brevity, but should be considered as within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. A window covering controller for controlling a pull cord of a window covering, the window covering controller comprising:

a housing;

a drive mechanism mounted to the housing;

the rotating mechanism is rotationally connected with the shell and is in transmission connection with the driving mechanism;

the telescopic mechanism is movably arranged on the shell and can elastically stretch in the vertical direction, and the telescopic mechanism and the rotating mechanism have a height difference in the vertical direction;

when the pull rope is wound on the telescopic mechanism and hung on the rotating mechanism, the driving mechanism drives the rotating mechanism to rotate so as to drive the pull rope to rotate, and the telescopic mechanism is used for providing tension for the pull rope.

2. The window curtain controller according to claim 1, wherein the retractable mechanism includes a connecting frame, an elastic member and a rope winding member, the rope winding member is connected to the connecting frame and used for winding the rope, the connecting frame is movably disposed on the housing along a vertical direction, the elastic member is connected to the connecting frame or sleeved on the connecting frame, and the elastic member is limited in the housing.

3. The window curtain controller according to claim 2, wherein the number of the rope winding members is at least two, the connecting frame comprises a first connecting rod and a second connecting rod which are vertically connected, the second connecting rod is movably arranged on the housing along the vertical direction, and two ends of the first connecting rod are respectively rotatably connected with at least one rope winding member.

4. The curtain controller as claimed in claim 3, wherein the rotating mechanism is disposed at the top end of the housing, the elastic member is mounted inside the housing, and the connecting frame penetrates through the bottom wall of the housing, so that the rope winding members are disposed at two sides of the bottom end of the housing.

5. The curtain controller according to claim 3, wherein a cavity is formed in the housing, a limiting groove is formed in the cavity, and the second connecting rod movably penetrates through the cavity and is limited by the limiting groove.

6. The curtain controller according to claim 5, wherein the limiting groove comprises a first limiting plate and a second limiting plate which are oppositely arranged, the second limiting plate is provided with a first avoiding hole, the bottom wall of the shell is provided with a second avoiding hole, and the second connecting rod penetrates through the first avoiding hole and the second avoiding hole and is limited by the first limiting plate.

7. The window curtain controller as claimed in claim 6, wherein a third limiting plate is disposed in the cavity and is located at a bottom side of the second limiting plate, and the elastic member is located between the third limiting plate and the second limiting plate.

8. The window covering controller as claimed in claim 7, wherein the third limiting plate is fixed to the second link, two opposite engaging plates extend upward from the bottom wall of the housing, and the third limiting plate is disposed between the two engaging plates.

9. The window covering controller of any one of claims 3-8, wherein the cord winder is a fixed pulley and the rotation mechanism is a friction wheel, the cord winder rotates about the first link extending in a first direction perpendicular to a vertical direction, and the rotation mechanism rotates about a second direction perpendicular to the first direction.

10. The window covering controller of claim 9, wherein the housing has a first side wall and a second side wall opposite to each other in the first direction, and the first side wall and/or the second side wall is provided with a first groove extending in a vertical direction, and the first groove is used for limiting the pulling rope on one side of the rope winding member;

the first side wall and/or the second side wall are/is provided with a second groove extending along the vertical direction, the second groove and the first groove are arranged at intervals in the second direction and used for limiting the pull rope on the other side of the rope winding piece, and the pull rope is hung on the rotating mechanism along the first groove and the second groove.

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