Curtain pull rope control device

Abstract

The utility model relates to the technical field of smart home, in particular to a curtain pull rope control device for a curtain system. The curtain pull rope control device comprises a supporting frame, a pull rope driver and an elastic piece, and the pull rope driver is used for driving a pull rope to move. The elastic piece is arranged between the pull rope driver and the supporting frame and used for exerting elastic force on the pull rope driver to enable the pull rope driver to move relative to the installation face of the pull rope control device so as to keep the pull rope tensioned. Under the action of the elastic piece, the pull rope driver can move relative to the mounting surface of the pull rope control device, and the pull rope connected with the pull rope driver is kept in a tensioned state all the time, so that the pull rope is easier to control, and the problem that the pull rope is difficult to control due to the fact that the pull rope driver and the pull rope are easy to loosen at present is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of smart home, in particular to a curtain pull cord control device for a curtain system. BACKGROUND

[0002] In the existing manual type pull cord curtain system, the lower end of the pull cord is usually in a hanging state, and the pull cord needs to be manually pulled to open and close the curtain. The control force and direction are difficult to control, and improper operation can easily damage the internal parts of the curtain system, resulting in poor user experience.

[0003] In view of the above problems existing in the manual type curtain system, the existing technology designs a pull cord driver to drive the pull cord to move, so as to open and close the curtain. However, after long-term use, the pull cord is easy to be elongated, and the pull cord and the pull cord driver are easy to be loose. The pull cord cannot move synchronously with the roller of the pull cord driver, and the pull cord is not easy to control. CONTENT OF THE INVENTION

[0004] The present application provides a curtain pull cord control device to improve the problem that the pull cord is not easy to control due to the looseness between the existing pull cord driver and the pull cord.

[0005] In a first aspect, a curtain pull cord control device is provided in an embodiment, comprising:

[0006] a pull cord driver, the pull cord driver comprising a housing, a winding wheel and a driving mechanism, the driving mechanism being installed on the housing, the winding wheel being used to wind the pull cord and being rotatably installed on the housing, the driving mechanism driving the winding wheel to rotate to wind and unwind the pull cord to open and close the curtain;

[0007] a support frame, the support frame being movably installed on the housing;

[0008] and an elastic member, the elastic member being arranged between the pull cord driver and the support frame, the elastic member being used to apply an elastic force to the pull cord driver, so that the pull cord driver can move relative to the mounting surface of the curtain pull cord control device to keep the pull cord taut.

[0009] Further, in an embodiment, the curtain pull cord control device comprises a seat body, the seat body being used to be fixed on the mounting surface, the housing being movably installed on the seat body, the curtain pull cord control device comprising a locking structure, the support frame being stopperingly matched with the seat body through the locking structure, at least after the locking structure is unlocked, the support frame can move relative to the seat body to adjust the position; the position of the support frame relative to the seat body can be adjusted independently of the pull cord driver, so as to adjust the elastic force of the elastic member by changing the position of the support frame when the pull cord is taut.

[0010] Further, in an embodiment, the locking structure is a one-way locking structure; the one-way locking structure is configured to one-way stop with the seat body to prevent the support frame from moving relative to the seat body in a first direction under the action of the elastic member, and allow the support frame to move relative to the pull rope driver in a second direction to increase the elastic force of the elastic member, the first direction being opposite to the second direction; the pull rope driver is capable of moving relative to the support frame in the second direction to tension the pull rope.

[0011] Further, in an embodiment, the one-way locking structure comprises a lock catch, a lock catch slot and a locking elastic member, the locking elastic member is configured to apply an elastic force to the lock catch to keep the lock catch locked with the lock catch slot;

[0012] The lock catch and the locking elastic member are mounted on the support frame, and the lock catch slot is on the seat body, or the lock catch and the locking elastic member are mounted on the seat body, and the lock catch slot is on the support frame;

[0013] The lock catch and / or the lock catch slot have a guide slope surface configured to guide the lock catch to separate from the lock catch slot when the support frame moves in the second direction.

[0014] Further, in an embodiment, the support frame has an operation portion exposed outside the housing, the operation portion is configured to operate the support frame to move to adjust the position of the support frame relative to the seat body and / or the housing.

[0015] Further, in an embodiment, the pull rope driver is configured to move relative to the support frame along the direction of the elastic force of the elastic member, the operation portion comprises a first operation portion and a second operation portion, the first operation portion and the second operation portion are respectively arranged on opposite sides of the housing, the first operation portion has a first guide surface, the second operation portion has a second guide surface, the first guide surface and the second guide surface are arranged opposite to each other, and the first guide surface and the second guide surface are both in sliding fit with the outer surface of the housing to guide the support frame and the pull rope driver to move relative to each other.

[0016] Further, in an embodiment, the window curtain pull rope control device further comprises an unlocking member configured to release the stop action of the locking structure; the unlocking member is movably mounted on the support frame, and at least part of the unlocking member is arranged in the operation portion.

[0017] Further, in an embodiment, the window curtain pull rope control device further comprises an unlocking member configured to release the stop action of the locking structure; the unlocking member is a press unlocking member and is arranged in pairs, and the unlocking members arranged in pairs move towards each other when pressed.

[0018] Further, in an embodiment, the pull cord driver is arranged to move along the elastic force direction of the elastic member relative to the support frame, and the number of the elastic members is two or more; and the at least two elastic members are arranged in a spaced manner in a direction perpendicular to the elastic force direction of the elastic members.

[0019] Further, in an embodiment, the housing has an elastic member mounting groove, the elastic member is arranged in the elastic member mounting groove, the support frame has an elastic member acting arm, the elastic member acting arm presses the elastic member, the elastic member acting arm extends into the elastic member mounting groove, and the elastic member mounting groove is used to guide the elastic force direction of the elastic member.

[0020] According to the window curtain pull cord control device of the above-mentioned embodiments, the elastic member is arranged between the pull cord driver and the support frame of the window curtain pull cord control device, and under the action of the elastic member, the pull cord driver can move relative to the mounting surface of the window curtain pull cord control device, and the pull cord connected with the pull cord driver is always kept in a tensioned state, thereby improving the problem that the pull cord is not easy to control due to the looseness between the pull cord driver and the pull cord. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 FIG. 1 is a structural schematic view of the window curtain pull cord control device according to an embodiment;

[0022] Figure 2 FIG. 2 is a front view of the window curtain pull cord control device according to an embodiment;

[0023] Figure 3 FIG. 3 is a sectional view along A-A of FIG. 1; Figure 2

[0024] FIG. 4 is a sectional view of the position of the elastic member in the window curtain pull cord control device according to an embodiment; Figure 4

[0025] FIG. 5 is another sectional view of the window curtain pull cord control device according to an embodiment; Figure 5

[0026] FIG. 6 is a sectional view along B-B of FIG. 1; Figure 6 Figure 2 FIG. 7 is an exploded view of the window curtain pull cord control device according to an embodiment.

[0027] Figure 7 FIG. 8 is a structural schematic view of the support frame and the locking structure according to an embodiment;

[0028] Figure 8 FIG. 9 is a sectional view of the support frame and the locking structure according to an embodiment.

[0029] Figure 9

[0030] ​​The feature names corresponding to the reference signs in the drawings are as follows: 1, seat body; 11, guide rail; 12, seat body protrusion; 2, pull rope driver; 21, guide groove; 22, winding rope wheel; 221, driving winding rope wheel; 222, driven winding rope wheel; 23, housing; 231, bottom shell; 2311, first shell; 2312, second shell; 232, top cover; 233, elastic member mounting groove; 24, driving mechanism; 3, elastic member; 4, support frame; 41, elastic member acting arm; 42, operating portion; 421, mounting groove; 422, first operating portion; 4221, first guide surface; 423, second operating portion; 4231, second guide surface; 5, locking structure; 51, lock catch; 511, first guide slope; 52, lock catch groove; 521, second guide slope; 53, locking elastic member; 6, unlocking member; 60, unlocking button; 61, unlocking slope.

[0031] Explanation of reference signs in brackets in the drawings: In the reference signs in brackets in the drawings, the feature referred to by the reference sign is both the feature represented by the number in the brackets and the feature represented by the number outside the brackets. DETAILED DESCRIPTION

[0032] The application will be described in further detail below with reference to the drawings. Like elements in different embodiments are denoted by like reference numerals. In the following embodiments, many details are described in order to provide a better understanding of the application. However, a person skilled in the art will readily recognize that some of these features can be omitted in different cases, or replaced by other elements, materials, methods. In some cases, some operations related to the application are not shown or described in the specification in order to avoid the core of the application being obscured by too much description, and a person skilled in the art will readily recognize that it is not necessary to describe these related operations in detail based on the description in the specification and general technical knowledge in the art.

[0033] In addition, the features, operations or characteristics described in the specification can be combined in any appropriate manner to form various embodiments. Meanwhile, the steps or actions in the method description can also be sequentially changed or adjusted in a manner that is apparent to a person skilled in the art. Therefore, the various sequences in the specification and the drawings are only for the purpose of clearly describing a certain embodiment, and do not mean that the sequence is necessary, unless otherwise stated that a certain sequence must be followed.

[0034] The serial numbers for components in this document, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequence or technical meaning. In this application, "connected", "coupled", etc. include direct connection, indirect connection and contact connection (coupling) unless otherwise specified.

[0035] The embodiments described in the detailed description can be combined in any suitable manner, for example, different embodiments can be combined to form different embodiments, without departing from the scope of the present application, and various possible combinations of the embodiments are not described again in order to avoid unnecessary repetition.

[0036] In order to solve the problem that the pull cord is not easy to control due to the easy loosening of the pull cord in the current pull cord control device of the window curtain, the present application provides a novel pull cord control device of the window curtain. The pull cord driver of the pull cord control device of the window curtain moves relative to the mounting surface of the device. Under the action of the elastic member, the pull cord connected with the pull cord driver can be kept in a tension state, thereby improving the problem that the pull cord is not easy to control due to the easy loosening of the pull cord. The pull cord control device of the window curtain of the present application will be described in detail below with reference to the accompanying drawings.

[0037] In one embodiment, please refer to Figures 1 to 5 The pull cord control device of the window curtain includes a pull cord driver 2, a support frame 4, and an elastic member 3. The pull cord driver 2 includes a housing 23, a winding cord wheel 22, and a driving mechanism 24. The driving mechanism 24 is installed on the housing 23. The winding cord wheel 22 is used to wind the pull cord and is rotatably installed on the housing 23. The driving mechanism 24 drives the winding cord wheel 22 to rotate to wind or unwind the pull cord to open or close the window curtain.

[0038] The support frame 4 is movably installed on the housing 23. The elastic member 3 is arranged between the pull cord driver 2 and the support frame 4. The elastic member 3 is used to apply an elastic force to the pull cord driver 2, so that the pull cord driver 2 can move relative to the mounting surface (not shown in the figure) of the pull cord control device of the window curtain to keep the pull cord in tension.

[0039] Since the elastic member 3 is arranged between the pull cord driver 2 and the support frame 4, under the action of the elastic member 3, the pull cord driver 2 can move relative to the mounting surface of the device, and the pull cord connected with the pull cord driver 2 can be kept in a tension state at all times, thereby making the pull cord easier to control and improving the problem that the pull cord is not easy to control due to the easy loosening of the pull cord between the current pull cord driver 2 and the pull cord.

[0040] Regarding the mounting surface of the pull cord control device of the window curtain, in one embodiment, the mounting surface can be a wall surface. Of course, in some other embodiments, according to different installation environments, the mounting surface can also be a window sill surface or other installation positions. The mounting surface of the pull cord control device of the window curtain can be a plane or a curved surface.

[0041] In order to facilitate the installation of the pull cord control device of the window curtain, in one embodiment, please refer to Figure 3 and Figure 4The curtain pull cord control device comprises a seat body 1 for being fixed on a mounting surface, and a housing 23 movably mounted on the seat body 1. In one embodiment, the seat body 1 is fixed on the mounting surface by means of screws. In some other embodiments, the seat body 1 can also be fixed on the mounting surface by means of adhesion, clamping or the like.

[0042] After the curtain pull cord control device is installed, the support frame 4 and the seat body 1 keep the relative position unchanged. In order to facilitate the installation and adjustment of the support frame 4 and the elastic member 3, in one embodiment, please refer to Figure 3 and Figure 4 The curtain pull cord control device comprises a locking structure 5, and the support frame 4 is in stop cooperation with the seat body 1 through the locking structure 5. At least after the locking structure 5 is unlocked, the support frame 4 can move relative to the seat body 1 to adjust the position. The position of the support frame 4 relative to the seat body 1 can be adjusted independently of the pull cord driver 2, so as to adjust the elastic force of the elastic member 3 by changing the position of the support frame 4 when the pull cord is tensioned. When the position of the support frame 4 is adjusted, the support frame 4 can move relative to the pull cord driver 2 and also relative to the seat body 1. In this way, when the curtain pull cord control device is installed, the relative position of the support frame 4 and the seat body 1 is changed by moving the support frame 4, so as to adjust the elastic deformation amount of the elastic member 3, to realize the adjustment of the elastic force of the elastic member 3, and to make the tensioning force of the pull cord reach a proper degree.

[0043] In one embodiment, please refer to Figure 3 and Figure 4 The locking structure 5 is a one-way locking structure, which is used to be in one-way stop cooperation with the seat body 1, so as to prevent the support frame 4 from moving relative to the seat body 1 in a first direction under the action of the elastic member 3, and to allow the support frame 4 to move relative to the pull cord driver 2 in a second direction to increase the elastic force of the elastic member 3, wherein the first direction is opposite to the second direction, and the pull cord driver 2 can move relative to the support frame 4 in the second direction to tension the pull cord. Through the one-way locking structure, the support frame 4 can be moved in the second direction without unlocking the locking structure 5, which is more convenient for adjusting the position of the support frame 4 to increase the elastic force of the elastic member 3, and further facilitates the adjustment of the elastic force of the elastic member 3. Of course, in some other embodiments, the locking structure 5 can also be a two-way locking structure, and no matter the support frame 4 moves relative to the seat body 1 in the first direction or in the second direction, the locking structure 5 needs to be unlocked first.

[0044] As to the structure form of the one-way locking structure, in one embodiment, please refer to Figure 3 , Figure 6 and Figure 7The one-way locking structure comprises a locking catch 51, a locking catch groove 52, and a locking elastic member 53. The locking elastic member 53 is used to apply elastic force to the locking catch 51, so that the locking catch 51 is locked with the locking catch groove 52. The locking catch 51 has a first guide slope 511, and the locking catch groove 52 has a second guide slope 521. The first guide slope 511 and the second guide slope 521 are used to guide the locking catch 51 to separate from the locking catch groove 52 when the support frame 4 moves in the second direction. In some embodiments, only the locking catch 51 or only the locking catch groove 52 has the guide slope.

[0045] In some embodiments, as shown in Figures 3 to 7 , the locking catch 51 is movably installed on the support frame 4, the locking elastic member 53 is also installed on the support frame 4, and the locking catch groove 52 is on the seat body 1. In some other embodiments, the locking catch 51 can be movably installed on the seat body 1, the locking elastic member 53 can be installed on the seat body 1, and the locking catch groove 52 can be on the support frame 4.

[0046] In some embodiments, as shown in Figure 3 and Figure 7 , the number of the locking catch grooves 52 is at least two. By adjusting the cooperation between the locking catch 51 and different locking catch grooves 52, the position of the support frame 4 can be adjusted. The number of the locking catch grooves 52 can be two, three, four, etc. according to needs. In some other embodiments, the number of the locking catches 51 can be at least two. By making different locking catches 51 cooperate with the locking catch groove 52, the position of the support frame 4 can be adjusted.

[0047] As to the structure of the locking catch groove 52, in some embodiments, as shown in Figure 3 and Figure 7 , the seat body 1 is provided with seat body protrusions 12. The number of the seat body protrusions 12 is two or more. The locking catch groove 52 is formed between adjacent seat body protrusions 12.

[0048] In some embodiments, as shown in Figures 1 to 3 , in order to facilitate the adjustment of the position of the support frame 4, the support frame 4 has an operation portion 42 exposed outside the shell 23. The operation portion 42 is used to operate the movement of the support frame 4, so as to adjust the position of the support frame 4 relative to the seat body 1 and / or the shell 23.

[0049] Specifically, in some embodiments, as shown in Figure 2 , Figure 4 and Figure 5, the pull rope driver 2 is used to move relative to the support frame 4 along the elastic force direction of the elastic member 3, the operation part 42 comprises a first operation part 422 and a second operation part 423, the first operation part 422 and the second operation part 423 are respectively located at opposite sides of the shell 23, so that the support frame 4 is more convenient to operate. The first operation part 422 has a first guide surface 4221, and the second operation part 423 has a second guide surface 4231, the first guide surface 4221 and the second guide surface 4231 are oppositely arranged, and the first guide surface 4221 and the second guide surface 4231 are in sliding fit with the outer surface of the shell 23, so as to guide the relative movement of the support frame 4 and the pull rope driver 2. In this way, the support frame 4 moves more smoothly relative to the shell 23 and is not easy to be stuck. In some other embodiments, the operation part 42 can also be exposed on one side of the shell 23.

[0050] In an embodiment, please refer to Figure 1 、 Figure 7 and Figure 8 , the window curtain pull rope control device further comprises an unlocking member 6, which is used to release the blocking action of the locking structure 5. The unlocking member 6 is movably mounted on the support frame 4, and at least part of the unlocking member 6 is exposed outside the shell 23 and is located in the operation part 42. The unlocking member 6 is mounted on the support frame 4, which is more convenient to unlock the locking structure 5, and the structure is compact and occupies small space.

[0051] In an embodiment, please refer to Figure 2 、 Figure 3 and Figure 6 , the unlocking member 6 is a press unlocking member and is arranged in pairs, and the paired unlocking members 6 move towards each other when being pressed. The locking structure 5 is unlocked by the paired unlocking members 6, so that the locking structure 5 is more balanced in force, the unlocking is more smooth, and the pressing operation is more convenient.

[0052] In an embodiment, please refer to Figure 3 、 Figure 6 and Figure 7 , when the lock catch 51 is unlocked, two unlocking members 6 are pressed at the same time, so that the lock catch 51 is separated from the lock catch groove 52. In an embodiment, please refer to Figure 6 , the unlocking member 6 is an unlocking button 60, which is movably mounted on the support frame 4.

[0053] Specifically, in an embodiment, please refer to Figure 5 , the paired unlocking members 6 are respectively mounted on the first operation part 422 and the second operation part 423, so that the support frame 4 is more convenient to operate. When the support frame 4 needs to be operated after the locking structure 5 is unlocked, since the unlocking member 6 is located at the same position as the operation part 42, the operation part 42 can be operated at the same time as the unlocking member 6 is operated to unlock the locking structure 5, so that the support frame 4 moves relative to the seat body 1.

[0054] Specifically, in one embodiment, referring to Figure 1 and Figure 7 , the first operation part 422 and the second operation part 423 are both provided with a mounting groove 421, and the unlocking button 60 is movably assembled in the mounting groove 421. In one embodiment, referring to Figure 1 , Figure 7 and Figure 8 , the first operation part 422 and the second operation part 423 are symmetrically arranged, and the pair of two unlocking members 6 are also symmetrically arranged and correspond to the two operation parts 42 one by one.

[0055] Regarding the unlocking mode of the unlocking member 6, in one embodiment, referring to Figure 3 and Figure 6 , the unlocking member 6 is used to apply a force to the lock catch 51 to make the lock catch 51 move in a direction away from the lock catch groove 52 against the force of the locking elastic member 53. In one embodiment, referring to Figure 3 , Figure 6 and Figure 7 , the unlocking member 6 has an unlocking slope surface 61, which can apply a force to the lock catch 51 to make the lock catch 51 move in a direction away from the lock catch groove 52 against the elastic force of the locking elastic member 53.

[0056] Regarding the structure form of the locking elastic member 53, in one embodiment, referring to Figure 3 , Figures 6 to 7 , the locking elastic member 53 is a spring. The lock catch 51 is movably mounted on the support frame 4, and the locking elastic member 53 is a compression spring which is compressed between the support frame 4 and the lock catch 51.

[0057] In one embodiment, referring to Figure 1 and Figure 4 , the pull rope driver 2 can move relative to the support frame 4 in the elastic force direction of the elastic member 3, and the number of the elastic member 3 is two or more. In the direction perpendicular to the elastic force direction of the elastic member 3, at least two elastic members 3 are arranged in a spaced manner. The number of the elastic member 3 is two or more, so that the elastic force received by the pull rope driver 2 is more balanced, and the operation is more stable and smooth under the action of the elastic force. Specifically, in one embodiment, the number of the elastic member 3 is two. Of course, in some other embodiments, the number of the elastic member can also be three, four or five. In some other embodiments, the number of the elastic member can also be one under the condition of meeting the requirements.

[0058] Regarding the mounting mode of the elastic member, in one embodiment, referring to Figure 5The shell 23 has an elastic element mounting groove 233, the elastic element 3 is in the elastic element mounting groove 233, the support frame 4 has an elastic element acting arm 41, the elastic element acting arm 41 presses the elastic element 3, the elastic element acting arm 41 extends into the elastic element mounting groove 233, and the elastic element mounting groove 233 is used for guiding the elastic force direction of the elastic element 3. Under the action of the elastic element mounting groove 233, the elastic force direction of the elastic element 3 is more stable, and the movement of the pull rope driver 2 under the action of the elastic force is also more smooth and not easy to be stuck. In some other embodiments, the shell 23 can also include a guide rod, and the elastic element 3 is sleeved on the guide rod, and the guide rod guides the elastic force direction of the elastic element.

[0059] In an embodiment, please refer to Figure 4 The elastic element 3 is a compression spring, and the extension direction of the elastic element 3 is consistent with the movement direction of the pull rope driver 2. In some other embodiments, the elastic element 3 can also be a stretching spring or an elastic pull rope. In an embodiment, please refer to Figure 7 and Figure 8 The number of the elastic element 3 is two or more, and the two elastic elements 3 are arranged in parallel and at intervals. In some other embodiments, the number of the elastic element 3 can also be one according to needs.

[0060] In order to make the movement of the pull rope driver 2 and the seat body 1 more stable, in an embodiment, the pull rope driver 2 is movably assembled on the seat body 1. Specifically, please refer to Figure 6 The pull rope driver 2 has a guide groove 21, and the seat body 1 has a guide rail 11 matched with the guide groove 21. The guide groove 21 and the guide rail 11 movably cooperate along the elastic force direction of the elastic element 3, and the guide rail 11 is prevented from moving relative to the guide groove 21 in a direction perpendicular to the elastic force direction of the elastic element 3. In some other embodiments, the seat body 1 can have a guide groove, and the pull rope driver 2 can have a guide rail matched with the guide groove.

[0061] Regarding the pull rope driver 2, in an embodiment, please refer to Figure 3 and Figure 7 The driving mechanism 24 includes a driving motor, the winding wheel 22 includes a driving winding wheel 221, the driving motor drives the driving winding wheel 221 to rotate, and the driving winding wheel 221 is used for winding and unwinding the pull rope to realize the opening and closing of the curtain.

[0062] In an embodiment, please refer to Figure 1 and Figure 2 The winding wheel 22 also includes a driven winding wheel 222, and the pull rope is wound on the driven winding wheel 222. The pull rope is led from the driving winding wheel 221 to the driven winding wheel 222. In an embodiment, the number of the driven winding wheels 222 is two. In an embodiment, the driving motor is in the shell 23, and the driven winding wheels 222 can rotate and are mounted on the shell 23.

[0063] Specifically, in an embodiment, please refer toFigure 1 、 Figure 3 and Figure 4 The housing 23 comprises a bottom shell 231 and a top cover 232, the bottom shell 231 and the top cover 232 form an installation cavity, and the driving mechanism 24 is installed in the installation cavity. The bottom shell 231 comprises a first shell 2311 and a second shell 2312, and the support frame 4 is clamped between the first shell 2311 and the second shell 2312. The first shell 2311 and the second shell 2312 are movably connected with the seat body 1, and the locking buckle 51 passes through the first shell 2311 and is used for being clamped into the locking buckle groove 52. In an embodiment, the elastic member 3 is a spring extending in the moving direction of the cord driving device 2, one end of the elastic member 3 abuts against the support frame 4, and the other end abuts against the second shell 2312.

[0064] In an embodiment, please refer to Figures 1 to 9 The working principle of the window curtain cord control device is as follows:

[0065] During installation, the seat body 1 is fixed on the installation surface (a window sill surface or a wall surface), then the cord driving device 2 is installed on the seat body 1 along one end of the seat body 1 until the locking buckle 51 enters the locking buckle groove 52, under the action of the elastic member 3, the cord connected with the cord driving device 2 is tensioned, the support frame 4 is operated to adjust the compression amount of the elastic member 3 until the tensioning degree of the cord is appropriate, and the installation of the window curtain cord control device is completed. During use, when the cord is loosened, the cord driving device 2 can move relative to the seat body 1 under the action of the elastic member 3, so that the cord is kept in tension.

[0066] The above application of specific examples is used to illustrate the present application, which is only used to help understand the present application and does not limit the present application. According to the idea of the present application, those skilled in the art can make several simple deductions, deformations or substitutions.

Claims

1. A window shade cord control device, comprising: The window curtain pull rope control device comprises: a pull rope driver, which comprises a housing, a winding wheel and a driving mechanism, the driving mechanism is mounted on the housing, the winding wheel is used for winding a pull rope and is rotatably mounted on the housing, and the driving mechanism drives the winding wheel to rotate to wind or unwind the pull rope to open or close the window curtain; a support frame, which is movably mounted on the housing; and a resilient member, which is arranged between the pull rope driver and the support frame, and is used for applying a resilient force to the pull rope driver, so that the pull rope driver can move relative to a mounting surface of the window curtain pull rope control device to keep the pull rope taut.

2. The window treatment pull cord control device of claim 1, wherein, The window curtain pull rope control device comprises a seat body, which is used for being fixed on the mounting surface, and the housing is movably mounted on the seat body. The window curtain pull rope control device comprises a locking structure, the support frame is in stop cooperation with the seat body through the locking structure, and at least after the locking structure is unlocked, the support frame can move relative to the seat body to adjust the position. The position of the support frame relative to the seat body can be adjusted independently of the pull rope driver, so as to adjust the resilient force of the resilient member by changing the position of the support frame when the pull rope is taut.

3. The window treatment pull cord control device of claim 2, wherein, The locking structure is a one-way locking structure, which is used for one-way stop with the seat body to prevent the support frame from moving relative to the seat body in a first direction under the action of the resilient member, and allow the support frame to move relative to the pull rope driver in a second direction to increase the resilient force of the resilient member, the first direction being opposite to the second direction. The pull rope driver can move relative to the support frame in the second direction to tighten the pull rope.

4. The window treatment pull cord control device of claim 3, wherein, The one-way locking structure comprises a lock catch, a lock catch groove and a locking resilient member, the locking resilient member is used for applying a resilient force to the lock catch to keep the lock catch locked with the lock catch groove. The lock catch and the locking resilient member are mounted on the support frame, and the lock catch groove is on the seat body, or the lock catch and the locking resilient member are mounted on the seat body, and the lock catch groove is on the support frame. The lock catch and / or the lock catch groove have a guide slope surface, which is used for guiding the lock catch to separate from the lock catch groove when the support frame moves in the second direction.

5. The window treatment pull cord control device of claim 2, wherein, The support frame has an operation portion exposed from the housing, which is used for operating the support frame to move to adjust the position of the support frame relative to the seat body and / or the housing.

6. The window treatment pull cord control device of claim 5, wherein, The pull rope driver is used for moving relative to the support frame along the direction of the resilient force of the resilient member, the operation portion comprises a first operation portion and a second operation portion, the first operation portion and the second operation portion are respectively on opposite sides of the housing, the first operation portion has a first guide surface, the second operation portion has a second guide surface, the first guide surface and the second guide surface are oppositely arranged, and the first guide surface and the second guide surface are in sliding cooperation with the outer surface of the housing to guide the support frame to move relative to the pull rope driver.

7. The window treatment pull cord control device of claim 5, wherein, The curtain pull cord control device further comprises an unlocking member for releasing the locking of the locking structure; the unlocking member is movably mounted on the support frame, and at least part of the unlocking member is located in the operating part.

8. The window treatment pull cord control device of claim 2, wherein, The curtain pull cord control device further comprises an unlocking member for releasing the locking of the locking structure; the unlocking member is a press unlocking member and is arranged in pairs; when the pair of unlocking members are pressed, they move towards each other.

9. The cord control device of any of claims 1-8, wherein, The pull cord driver is used to move relative to the support frame along the elastic force direction of the elastic member; the number of the elastic members is two or more; in the direction perpendicular to the elastic force direction of the elastic member, at least two elastic members are arranged at intervals.

10. The window treatment pull cord control device of claim 9, wherein, The shell has an elastic member mounting groove, the elastic member is located in the elastic member mounting groove, the support frame has an elastic member acting arm, the elastic member acting arm presses the elastic member, the elastic member acting arm extends into the elastic member mounting groove, and the elastic member mounting groove is used to guide the elastic force direction of the elastic member.

Images