Locking device for curtain operation cord

Abstract

This invention provides a locking device for a curtain operating cord, comprising: a housing and a locking assembly. The housing has a cord guide groove and a sliding groove. One end of the sliding groove communicates with the cord guide groove through a through hole. The opening of the sliding groove is located on one side wall of the housing, and the side wall of the sliding groove has a first locking part. The locking assembly includes a slider and an elastic element. The slider is assembled in the sliding groove and can slide back and forth between a cord locking position and a cord unlocking position. The slider has an operating part, a second locking part, and a locking part. When the slider slides to the cord locking position or the cord unlocking position, the locking part locks or releases the operating cord in the cord guide groove. The slider also slides down to the slider locking position under the action of the elastic element, where it is locked by the second locking part and the first locking part. The direction of the force applied by the elastic element to the slider has a non-zero angle with the line connecting the cord locking position and the cord unlocking position. The curtain operating cord locking device provided by this invention can achieve double locking and facilitates the operation of the operating cord by the operator.

Description

Technical Field

[0001] This invention relates to the field of curtain technology, and more particularly to a locking device for curtain operating cords. Background Technology

[0002] Manually operated curtains typically have control cords such as beaded chains (pull cords) or pull cords for users to manually open or close the curtains. Traditional curtain control cords are not fixed and hang naturally. When the wind blows, the control cords sway freely, easily colliding with the window frame or walls, creating annoying noise. Furthermore, the freely swaying control cords may get tangled in nearby objects, causing them to fall and be damaged.

[0003] To address the shortcomings of traditional curtain operating cords, an industry-developed curtain operating cord locking device includes: a fixed base and a fixed cover that overlap to form a receiving space; a positioning member disposed within the receiving space; and at least one elastic member. The fixed base and the fixed cover have openings communicating with the receiving space on opposite sides. The fixed base has opposing first and second upright portions within the receiving space. The positioning member is located between the first and second upright portions and is connected to the first upright portion by the elastic member. The positioning member is also connected to a spring clip, and a button is provided on the spring clip. Furthermore, a through hole is provided on the fixed cover, and the button of the positioning member is engaged with the through hole of the fixed cover. A braking part is formed on the second upright part of the fixed base, and a clamping interval is formed between the braking part and the positioning member. The curtain's operating cord passes through the clamping interval and exits through the openings provided on both sides of the fixed base and the fixed cover. The first upright part and the second upright part of the fixed base are respectively provided with a first locking hole, and the fixed cover is provided with a second locking hole corresponding to the position of the first locking hole. In addition, two locking fasteners are respectively inserted into the corresponding first locking hole and second locking hole of the fixed base and the fixed cover for fixation.

[0004] In the existing curtain operating cord locking device, the positioning member moves relative to the second set of uprights under the drive of the corresponding elastic member, pushing the operating cord towards the braking part on the second set of uprights to achieve locking. Since the locking state is maintained solely by the elastic force of the elastic member, the locking effect is not ideal. If the operating cord is pulled by a large external force, the operating cord may overcome the elastic force of the elastic member and push the positioning member away, thus being pulled. In addition, when it is necessary to pull the operating cord to open or close the curtain, the operator applies force to the button to overcome the elastic force of the elastic member and push the positioning member to the unlock position. However, since the elastic member always applies force to the positioning member, it tends to automatically reset to the locked position. Therefore, the operator can only use one hand to continuously apply force to the button to keep the positioning member in the unlock position, while using the other hand to pull the operating cord, which is inconvenient. Summary of the Invention

[0005] The technical problem to be solved by the embodiments of the present invention is to provide a locking device for a curtain operating rope, which has a simple structure, good locking effect, and is convenient for operating the operating rope.

[0006] To solve the above-mentioned technical problems, the present invention first provides the following technical solution: a locking device for a curtain operating cord, comprising: The housing is fixed to a corresponding mounting base next to the curtain, and the curtain's operating cord passes through the inside of the housing; and A locking component is disposed within the housing for correspondingly locking the operating rope; The housing has a guide groove for the operating rope to pass through and a slide groove for assembling the locking assembly. One end of the slide groove is connected to the guide groove through a through hole. The opening of the slide groove is opened on the side wall of the housing. The side wall of the slide groove is provided with a first locking part. The locking assembly includes a slider and an elastic element. The slider is assembled in the groove and can slide back and forth between a rope locking position relatively close to the rope guide groove and a rope unlocking position relatively far from the rope guide groove. The slider is provided with an operating part exposed from the groove opening, a second locking part for correspondingly cooperating with the first locking part on the side wall of the groove, and a locking part inserted into the rope guide groove through the through hole. When the slider slides to the rope locking position or the rope unlocking position, the locking part correspondingly locks or releases the operating rope. The slider also slides to the slider locking position close to the first locking part under the elastic force applied by the elastic element, and is locked by the second locking part corresponding to the first locking part. The direction of the force applied by the elastic element to the slider has a non-zero angle with the line connecting the rope locking position and the rope unlocking position.

[0007] Furthermore, the guide rope groove is U-shaped, including a first inlet section and a second inlet section located on opposite sides, and an arc segment connecting the first inlet section and the second inlet section. The sliding groove is disposed on the outer curved side of the arc segment, and the through hole penetrates the hole wall on the outer curved side of the arc segment.

[0008] Furthermore, the locking assembly also includes a sliding seat correspondingly disposed within the slide groove, the slider being assembled on the sliding seat, a guide structure being provided between the sliding seat and the slider to guide the slider to slide relative to the sliding seat in the direction of entering and exiting the groove, the elastic element being pre-compressed and assembled between the slider and the sliding seat with its two ends respectively abutting against the slider and the sliding seat, and a limiting part being provided at the groove opening of the slide groove to prevent the slider from slipping out.

[0009] Furthermore, the guide structure includes a guide post extending from the sliding seat toward the slider and a guide hole formed on the slider for the guide post to be inserted.

[0010] Furthermore, the groove walls on opposite sides of the slide groove each form a side groove that opens toward the interior of the slide groove. At least one partition bar protrudes from the groove wall on the side of the side groove near the opening of the slide groove and has a predetermined distance from the groove wall on the side of the side groove away from the opening of the slide groove. The partition bar divides the side groove into at least two segments in the groove length direction, which correspond to the positioning slots of the first locking part. The second locking part is a positioning bar that protrudes from opposite sides of the slider and is inserted into the side groove. The width of the positioning bar is adapted to the groove width of the positioning slot and the thickness is less than the predetermined distance. The groove wall on the side of the side groove near the opening of the slide groove also constitutes the limiting part.

[0011] Furthermore, the housing includes a bottom shell, a middle shell, and a cover shell. The bottom shell is fixed to a fixed base, the middle shell is fixed to the bottom shell, and the cover shell is then fastened to the middle shell. The guide rope groove is formed on the middle shell. The sliding groove is formed by sequentially connecting and combining a bottom groove formed on the bottom shell, a main groove formed on the middle shell, and a groove formed on the cover shell. The side groove is formed on the side wall of the main groove.

[0012] Furthermore, the middle shell is fixed relative to the bottom shell by means of a snap-fit ​​structure. One end of the cover is formed with a pivot and the other end is provided with a snap-fit ​​hole. The pivot is correspondingly snapped into the pivot groove formed on the bottom shell, and the snap-fit ​​hole is correspondingly snapped and fixed with the elastic snap-fit ​​member provided on the bottom shell.

[0013] Furthermore, the elastic fastener includes an elastic body for generating elastic deformation to provide elastic thrust, and a latch and a pressing block arranged side by side at the same end of the elastic body. The bottom shell is provided with a receiving groove. The elastic fastener is assembled in the receiving groove with the elastic body pre-compressed and the opposite ends of the elastic body respectively abut against the stop portions at opposite ends of the receiving groove. The latch and the pressing block are integrated and both extend from one end of the receiving groove to the outside of the bottom shell. The latching hole on the cover is engaged with the latch to fix the cover.

[0014] Furthermore, the elastic buckle is integrally injection molded, and the elastic body has an S-shaped bending shape.

[0015] Furthermore, the locking part consists of two locking teeth that symmetrically protrude from one side wall of the slider.

[0016] After adopting the above technical solution, the embodiments of the present invention have at least the following beneficial effects: The locking device for the curtain operating rope provided by the embodiments of the present invention consists of a slider and an elastic element. When the slider slides along the groove to the rope locking position, not only is the locking part on the slider locked, but the elastic element also applies force to keep the slider locked in the slider locking position where the second locking part on the slider and the first locking part on the groove are locked, achieving double locking. At this time, even if the operating rope is pulled by a large external force, it cannot push the slider open and move, resulting in a good locking effect. Moreover, when the slider slides to the rope unlocking position, the operator does not need to continuously apply force to the slider. The slider will enter and remain in the slider locking position where the second locking part and the first locking part are locked under the force of the elastic element, making it convenient for the operator to pull, adjust, or maintain the operating rope. Attached Figure Description

[0017] Figure 1 This is a perspective view of an optional embodiment of the locking device for the curtain operating cord of the present invention in use.

[0018] Figure 2 This is a three-dimensional structural diagram of a disassembled state of an optional embodiment of the locking device for the curtain operating rope of the present invention.

[0019] Figure 3 This is a schematic diagram of the structure of the locking device for the curtain operating cord of the present invention, in which the locking component and the elastic buckle are assembled onto the base.

[0020] Figure 4 Is Figure 3 A schematic diagram of the structure after further assembling the casing based on the structure shown.

[0021] Figure 5 Is Figure 4A schematic diagram of the structure of further assembling the middle shell based on the structure shown.

[0022] Figure 6 Is Figure 5 This is a schematic diagram of the structure in which the cover and the bottom shell are fastened together based on the structure shown.

[0023] Figure 7 This is a perspective view of the inner side of the middle shell of an optional embodiment of the locking device for the curtain operation cord of the present invention.

[0024] Figure 8 This is a cross-sectional structural schematic diagram of an optional embodiment of the locking device for the curtain operation cord of the present invention.

[0025] Figure 9 This is another cross-sectional structural schematic diagram of an optional embodiment of the locking device for the curtain operating cord of the present invention.

[0026] Figure 10 This is another cross-sectional structural schematic diagram of another optional embodiment of the locking device for the curtain operating cord of the present invention. Detailed Implementation

[0027] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. It should be understood that the following illustrative embodiments and descriptions are only used to explain the present invention and are not intended to limit the present invention. Moreover, the embodiments and features in the embodiments of the present application can be combined with each other unless otherwise specified.

[0028] like Figures 1-10 As shown, an optional embodiment of the present invention provides a locking device for a curtain operating cord, comprising: The housing 1 is fixed to the corresponding fixing base 9 next to the curtain, and the curtain's operating cord 8 passes through the inside of the housing 1; and Locking component 3 is disposed inside the housing 1 and is used to lock the operating rope 8 accordingly; The housing 1 has a guide groove 10 for the operation rope 8 to pass through and a slide groove 12 for assembling the locking assembly 3 inside. One end of the slide groove 12 is connected to the guide groove 10 through a through hole 14. The groove opening 120 of the slide groove 12 is opened on the shell wall on one side of the housing 1. The side wall of the slide groove 12 is provided with a first locking part 122. The locking assembly 3 includes a slider 30 and an elastic element 32. The slider 30 is assembled in the groove 12 and can slide back and forth between a rope locking position relatively close to the rope guide groove 10 and a rope unlocking position relatively far from the rope guide groove 10. The slider 30 is provided with an operating part 300 exposed from the groove opening 120, a second locking part 302 for correspondingly cooperating with the first locking part 122 on the side wall of the groove 12, and a locking part 304 inserted into the rope guide groove 10 through the through hole 14. When the slider 30 slides to the rope locking position or the rope unlocking position, the locking part 304 correspondingly locks or releases the operating rope 8. The slider 30 also slides to the slider locking position close to the first locking part 122 under the action of the elastic force applied by the elastic element 32, and is locked by the second locking part 302 corresponding to the first locking part 122. The direction of the force applied by the elastic element 32 to the slider 30 has a non-zero angle with the line connecting the rope locking position and the rope unlocking position.

[0029] The specific operation method of the curtain operation rope locking device provided in this embodiment of the invention is as follows: When the slider 30 slides to the rope locking position, the locking part 304 will correspondingly lock the operation rope 8 in the guide rope groove 10, that is, the operation rope 8 is in the rope locking state, which can effectively prevent the operation rope 8 from shaking randomly. Moreover, the slider 30 will also slide to the slider locking position close to the first locking part 122 under the elastic force of the elastic member 32, and the second locking part 302 on the slider 30 will lock corresponding to the first locking part 122, realizing double locking; when it is necessary to pull, adjust or maintain the operation rope 8, it is necessary to first lock the operation part 30 of the slider 30. 00 applies force to overcome the elastic force exerted by the elastic element 32 on the slider 30, causing the slider 30 to slide to the slider locking position away from the first locking part 122. At this time, the second locking part 302 is unlocked from the first locking part 122. Then, when the slider 30 is pushed to slide from the rope locking position to the rope unlocking position in the slide groove 12, the force applied to the slider 30 is removed. The slider 30 can then slide towards the first locking part 122 again under the action of the elastic element 32 and be locked again by the second locking part 302 and the first locking part 122. The same operation can be performed to push the slider 30 from the rope unlocking position to the rope locking position.

[0030] The curtain operation rope locking device provided in this embodiment of the invention uses a slider 30 and an elastic element 32. When the slider 30 slides along the groove 12 to the rope locking position, not only is the locking part 304 on the slider 30 locking the operation rope, but the elastic element 32 also applies force to keep the slider 30 locked in the slider locking position where the second locking part 302 on the slider 30 and the first locking part 122 on the groove 12 are locked, achieving double locking. Since the direction of the force applied by the elastic element 32 to the slider 30 has a non-zero angle (preferably a 90-degree angle) with the line connecting the rope locking position and the rope unlocking position, the operation rope 8 cannot push the slider 30 open and move even if it is pulled by a large external force, resulting in a good locking effect. Moreover, when the slider 30 slides to the rope unlocking position, the operator does not need to apply continuous force to the slider 30. The slider 30 will enter and remain in the slider locking position locked by the second locking part 302 and the first locking part 122 under the force of the elastic element 32, which makes it convenient for the operator to pull, adjust or maintain the operating rope 8.

[0031] In specific implementation, the slider locking position can be located near the groove 120 of the slide groove 12, while the position of the slide groove 12 relatively away from the groove 120 corresponds to the slider unlocking position. The elastic force applied by the elastic member 32 to the slider 30 causes the slider 30 to tend to move towards the groove 120. By pressing the slider 30 into the slide groove 12 to overcome the elastic force of the elastic member 32, the second locking part 302 can be disengaged from the first locking part 122. In addition, the outer surface of the operating part 300 can be provided with anti-slip texture 301 to facilitate the pushing operation of the slider 30. It can be understood that the slider locking position and the slider unlocking position can be interchanged. In this case, the elastic force applied by the elastic member 32 to the slider 30 causes the slider 30 to tend to move away from the groove 120. By pulling the slider 30 outward to overcome the elastic force of the elastic member 32, the second locking part 302 can also be disengaged from the first locking part 122. The fixing base 9 can be a fixed object such as a wall or window frame around the curtain.

[0032] In an optional embodiment of the present invention, such as Figure 2 , Figure 5 and Figure 9 As shown, the rope guide groove 10 is U-shaped, including a first inlet / outlet section 100 and a second inlet / outlet section 102 located on opposite sides, and an arc segment 104 connecting the first inlet / outlet section 100 and the second inlet / outlet section 102. The sliding groove 12 is disposed on the outer curved side of the arc segment 104, and the through hole 14 penetrates the hole wall on the outer curved side of the arc segment 104. In this embodiment, by designing the rope guide groove 10 as U-shaped, the operating rope 8 can move smoothly in the rope guide groove 10.

[0033] In another alternative embodiment of the invention, such as Figures 2 to 5 ,and Figure 8 As shown, the locking assembly 3 further includes a sliding seat 34 correspondingly disposed within the slide groove 12. The slider 30 is assembled onto the sliding seat 34. A guide structure 36 is provided between the sliding seat 34 and the slider 30 to guide the slider 30 to slide relative to the sliding seat 34 in the direction of entering and exiting the slot 120 of the slide groove 12. The elastic member 32 is pre-compressed and assembled between the slider 30 and the sliding seat 34, with its two ends respectively abutting against the slider 30 and the sliding seat 34. A limiting part 124 is provided at the slot 120 of the slide groove 12 to prevent the slider 30 from slipping out. In this embodiment, by adding a sliding seat 34 to cooperate with the slider 30 and the elastic member 32, the locking assembly 3 as a whole can slide within the slide groove 12. This effectively prevents the elastic member 32 from bending and affecting the elastic force applied by the elastic member 32 to the slider 30, ensuring that the slider 30 can enter the slider locking position more smoothly. The limiting part 124 effectively prevents the slider 30 from slipping out of the slide groove 12. In specific implementation, the elastic element 32 can be a compression spring or an elastic rubber block.

[0034] In an optional embodiment of the present invention, such as Figure 8 As shown, the guide structure 36 includes a guide post 360 extending from the sliding seat 34 toward the slider 30 and a guide hole 362 formed on the slider 30 for the guide post 360 to be inserted. Clearly, the positions of the guide post 360 and the guide hole 362 can be interchanged.

[0035] In another alternative embodiment of the invention, such as Figure 2 , Figure 7 , Figure 9 and Figure 10As shown, the groove walls on opposite sides of the slide groove 12 are each formed with a side groove 126 that opens toward the interior of the slide groove 12. At least one spacer 128 protrudes from the side wall of the side groove 126 near the groove opening 120 of the slide groove 12 and has a predetermined distance from the side wall of the side groove 126 away from the groove opening 120 of the slide groove 12. The spacer 128 divides the side groove 126 into at least two segments in the groove length direction, which correspond to the positioning slots of the first locking part 122. The second locking part 302 is a positioning strip that protrudes from opposite sides of the slider 30 and is inserted into the side groove 126. The width of the positioning strip is adapted to the groove width of the positioning slot and the thickness is less than the predetermined distance. The side wall of the side groove 126 near the groove opening 120 of the slide groove 12 also constitutes the limiting part 124. In this embodiment, side grooves 126 are formed on the groove walls on both sides of the slide groove 12, and spacers 128 are formed within the side grooves 126 to divide the space of the side grooves into positioning slots. These positioning slots constitute the first locking part 122, and positioning strips constituting the first locking part 302 are formed on both sides of the slider 30. Through appropriate dimensional design, the positioning strips can be precisely accommodated within the positioning slots for positioning without significant loosening. Simultaneously, when the positioning strips are removed from the positioning slots, they can slide freely along the length of the slide groove 12 without interference from the spacers 128. This results in a more compact and rationally designed structure. In specific implementation, such as... Figures 2 to 4 , Figure 7 , Figure 9 and Figure 10 As shown, each side can have multiple positioning slots and positioning bars. When the slider 30 is in the rope locking position and the rope unlocking position, the positioning bar is inserted into the positioning slot at different positions.

[0036] In an optional embodiment of the present invention, such as Figures 2 to 10 As shown, the housing 1 includes a bottom shell 11, a middle shell 13, and a cover shell 15. The bottom shell 11 is fixed to the fixed base 9, the middle shell 13 is fixed to the bottom shell 11, and the cover shell 15 is then fastened to the middle shell 13. The guide rope groove 10 is formed on the middle shell 13. The sliding groove 12 is formed by sequentially connecting and combining a bottom groove 121 formed on the bottom shell 11, a main groove body 123 formed on the middle shell 13, and a groove opening 120 formed on the cover shell 15. The side groove 126 is formed on the side wall of the main groove body 123. In this embodiment, the housing 1 is disassembled into three independent components: the bottom shell 11, the middle shell 13, and the cover shell 15, which facilitates separate manufacturing and assembly.

[0037] In an optional embodiment of the present invention, such as Figures 2 to 10As shown, the middle shell 13 is fixed to the bottom shell 11 by means of a snap-fit ​​structure 130. One end of the cover 15 has a pivot 150 formed therein, while the other end has a snap-fit ​​hole 152. The pivot 150 is correspondingly engaged in a pivot groove 110 formed on the bottom shell 11, and the snap-fit ​​hole 152 is correspondingly engaged with an elastic snap-fit ​​member 112 provided on the bottom shell 11. In this embodiment, the middle shell 13 is fixed to the bottom shell 11 by means of the snap-fit ​​structure 130, resulting in a simple structure and convenient assembly. The cover 15 is pivotally connected to the bottom shell 11 at one end and snap-fitted to the bottom shell at the other end. When needed, pressing the elastic snap-fit ​​member 112 can easily release the snap-fit ​​relationship between the cover 15 and the bottom shell 11, thereby rotating and opening the cover 15 (e.g., ...). Figure 5 (As shown in the diagram), it is convenient to remove the operating rope 8 to open or close the curtain body 7, or to maintain the operating rope 8; of course, it is also possible to directly apply force to the slider 30 to change the position of the slider without opening the cover 15, thereby locking or unlocking the operating rope 8. In the unlocked state, it is not necessary to remove the operating rope 8 from the locking device, and the pulling operation of the operating rope 8 can still be achieved. In specific implementation, the buckle structure 130 may include an elastic hook 1300 provided on the middle shell 13 and a buckle hole 1302 provided on the bottom shell, and the hook at the end of the elastic hook 1300 is hooked into the buckle hole 1302 to achieve fixation; pivots 150 are provided on opposite sides of the cover 15, due to the viewing angle, Figure 2 Only one pivot 150 is shown in the image.

[0038] In an optional embodiment of the present invention, such as Figures 2 to 6As shown, the elastic fastener 112 includes an elastic body 1120 for generating elastic deformation to provide elastic thrust, and a locking tongue 1122 and a pressing block 1124 arranged side by side at the same end of the elastic body 1120. The bottom shell 11 is provided with a storage groove 113. The elastic fastener 112 is pre-compressed and assembled in the storage groove 113 with the elastic body 1120, and the opposite ends of the elastic body 1120 respectively abut against the stop portions 1130 at opposite ends of the storage groove 113. The locking tongue 1122 and the pressing block 1124 are integrated and both extend from one end of the storage groove 113 to the outside of the bottom shell 11. The fastening hole 152 on the cover 15 is engaged with the locking tongue 1122 to fix the cover 15. The elastic buckle 112 provided in this embodiment has a simple structure and is easy to assemble into the storage groove 113 on the bottom shell 11. The locking tongue 1122 and the pressing block 1124 are connected as one unit and can move synchronously, so that the cover 15 can be effectively locked under the action of the elastic body 1120, and the locking tongue 1122 can be disengaged from the buckle hole 152 on the cover 15 by pressing the pressing block 1124. In a specific implementation, the end walls of the storage groove 113 at both ends of the bottom shell can be the stop portion 1130, and the stop portion 1130 at the end away from the slide groove 12 is also provided with a through hole 1133 for the pressing block 1124 to extend out. The stop portion 1130 at the end of the storage groove 113 near the slide groove 12 can also be formed by a baffle provided on the middle shell 13, and the locking tongue 1122 is located outside the groove of the storage groove 113 and extends out from the notch 132 reserved on the middle shell 13.

[0039] In an optional embodiment of the present invention, such as Figures 2 to 6 As shown, the elastic buckle 112 is integrally injection molded, and the elastic body 1120 has an S-shaped bending shape. In this embodiment, the elastic buckle 112 is integrally injection molded, which facilitates manufacturing and assembly; the S-shaped bending shape of the elastic body 1120 can provide elastic force through good elastic deformation.

[0040] In an optional embodiment of the present invention, such as Figure 2 and Figure 9 As shown, the locking part 304 consists of two symmetrically protruding teeth extending from one side wall of the slider 30. This embodiment, by using teeth as the locking part 304, can effectively accommodate beaded chains and ordinary pull cords. When the operating cord 8 is as follows... Figure 1 When pulling the rope as shown, the tips of the locking teeth press the operating rope 8 against the groove wall on the opposite side of the guide rope groove 10 to lock the operating rope 8; while when the operating rope 8 is as shown... Figure 9When the bead chain is shown, the groove between the two locking teeth can accommodate a corresponding bead 80 on the positioning bead chain, and the gap between the tooth tip and the groove wall on the opposite side of the guide rope groove 10 is insufficient for the bead to pass through, thereby effectively locking the bead chain.

[0041] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many variations under the guidance of the present invention without departing from the inventive spirit and scope of protection of the claims. These variations are all within the scope of protection of the present invention.

Claims

1. A locking device for a curtain operating cord, comprising: The housing is fixed to a corresponding fixing base next to the curtain, and the curtain's operation cord passes through the inside of the housing; as well as A locking component is disposed within the housing for correspondingly locking the operating rope; The feature is that the housing is provided with a guide rope groove for the operation rope to pass through and a slide groove for assembling the locking assembly. One end of the slide groove is connected to the guide rope groove through a through hole. The opening of the slide groove is opened on the shell wall on one side of the housing. The slide groove sidewall is provided with a first locking part. The locking assembly includes a slider and an elastic element. The slider is assembled in the groove and can slide back and forth between a rope locking position relatively close to the rope guide groove and a rope unlocking position relatively far from the rope guide groove. The slider is provided with an operating part exposed from the groove opening, a second locking part for correspondingly cooperating with the first locking part on the side wall of the groove, and a locking part inserted into the rope guide groove through the through hole. When the slider slides to the rope locking position or the rope unlocking position, the locking part correspondingly locks or releases the operating rope. The slider also slides to the slider locking position close to the first locking part under the elastic force applied by the elastic element, and is locked by the second locking part corresponding to the first locking part. The direction of the force applied by the elastic element to the slider has a non-zero angle with the line connecting the rope locking position and the rope unlocking position.

2. The locking device for the curtain operating cord as described in claim 1, characterized in that, The guide rope groove is U-shaped and includes a first inlet section and a second inlet section located on opposite sides, and an arc segment connecting the first inlet section and the second inlet section. The sliding groove is provided on the outer curved side of the arc segment, and the through hole penetrates the hole wall on the outer curved side of the arc segment.

3. The locking device for the curtain operating cord as described in claim 1, characterized in that, The locking assembly further includes a sliding seat correspondingly disposed in the slide groove, the slider is assembled on the sliding seat, a guide structure is provided between the sliding seat and the slider to guide the slider to slide relative to the sliding seat in the direction of entering and exiting the groove, the elastic element is pre-compressed and assembled between the slider and the sliding seat and its two ends respectively abut against the slider and the sliding seat, and a limiting part is provided at the groove opening of the slide groove to prevent the slider from slipping out.

4. The locking device for the curtain operating cord as described in claim 3, characterized in that, The guide structure includes a guide post extending from the sliding seat toward the slider and a guide hole formed on the slider for the guide post to be inserted.

5. The locking device for the curtain operating cord as described in claim 3, characterized in that, The groove walls on both sides of the slide groove are each formed with a side groove that opens toward the inside of the slide groove. At least one partition bar protrudes from the side wall of the side groove near the opening of the slide groove and has a predetermined distance from the side wall of the side groove away from the opening of the slide groove. The partition bar divides the side groove into at least two segments in the groove length direction, which correspond to the positioning slots of the first locking part. The second locking part is a positioning bar that protrudes from the opposite sides of the slider and is inserted into the side groove. The width of the positioning bar is adapted to the groove width of the positioning slot and the thickness is less than the predetermined distance. The side wall of the side groove near the opening of the slide groove also constitutes the limiting part.

6. The locking device for the curtain operating cord as described in claim 5, characterized in that, The housing includes a bottom shell, a middle shell, and a cover shell. The bottom shell is fixed to a fixed base, the middle shell is fixed to the bottom shell, and the cover shell is then fastened to the middle shell. The guide rope groove is formed on the middle shell. The sliding groove is formed by sequentially connecting and combining a bottom groove formed on the bottom shell, a main groove formed on the middle shell, and a groove formed on the cover shell. The side groove is formed on the side wall of the main groove.

7. The locking device for the curtain operating cord as described in claim 6, characterized in that, The middle shell is fixed to the bottom shell by means of a snap-fit ​​structure. One end of the cover is formed with a pivot and the other end is provided with a snap-fit ​​hole. The pivot is correspondingly snapped into the pivot groove formed on the bottom shell, and the snap-fit ​​hole is correspondingly snapped and fixed with the elastic snap-fit ​​member provided on the bottom shell.

8. The locking device for the curtain operating cord as described in claim 7, characterized in that, The elastic fastener includes an elastic body for generating elastic deformation to provide elastic thrust, and a latch and a pressing block arranged side by side at the same end of the elastic body. The bottom shell is provided with a receiving groove. The elastic fastener is assembled in the receiving groove with the elastic body pre-compressed and the opposite ends of the elastic body respectively abut against the stop portions at opposite ends of the receiving groove. The latch and the pressing block are integrated and both extend from one end of the receiving groove to the outside of the bottom shell. The latching hole on the cover is engaged with the latch to fix the cover.

9. The locking device for the curtain operating cord as described in claim 8, characterized in that, The elastic buckle is integrally injection molded, and the elastic body is S-shaped.

10. The locking device for the curtain operating cord as described in claim 1, characterized in that, The locking part consists of two locking teeth that symmetrically protrude from one side wall of the slider.

Images