Height-adjustable rope buckle structure and window curtain
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO ZHENFEI DECORATED CURTAIN CO LTD
- Filing Date
- 2025-06-25
- Publication Date
- 2026-06-19
Smart Images
Figure CN224379736U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of curtain technology, specifically to an adjustable height cord buckle structure and a curtain. Background Technology
[0002] Roman blinds are a common type of curtain, consisting of multiple parallel strips of fabric. When the curtain cord is pulled, the fabric strips can be folded into parallel layers, thus achieving the effect of blocking sunlight and protecting privacy. They are widely used in homes, offices, conference rooms, and many other places.
[0003] Some existing curtain products, such as Roman blinds, include a lower beam support, curtain cords, cord clips, and a cord reel. The cord clips are mounted on the lower beam support, and there are two curtain cords and two cord clips. The lower ends of the two curtain cords are fixed to their corresponding cord clips, and the upper ends of the curtain cords are connected to the cord reel. In use, the cord reel winds up or down the curtain cords to control the height of the lower beam support, thereby adjusting the height of each curtain strip. In this existing structure, the cord clips are simply fixed to the lower ends of the curtain cords. Due to assembly errors at the factory, the two cord clips may not be at the same height during use (one cord clip may be higher than the other), causing the lower beam support to tilt. A tilted lower beam affects the normal use and aesthetics of the curtains. In this case, it is necessary to disassemble one of the curtain cords from its corresponding cord clip and re-fix it in the correct position (i.e., at the same height as the other cord clip), which is cumbersome and results in a poor user experience. Utility Model Content
[0004] To address at least one of the aforementioned problems, this utility model provides an adjustable-height cord lock structure, comprising a curtain cord, a cord lock body, and a rotating component. The rotating component is disposed on the cord lock body, and one end of the curtain cord is connected to the rotating component. The cord lock body and the rotating component are movably engaged. The rotating component has a switchable locked state and an unlocked state. When the rotating component is in the unlocked state, it can rotate. A locking mechanism is provided between the cord lock body and the rotating component. The locking mechanism includes an elastic element disposed between the cord lock body and the rotating component. In normal operation, the elastic force of the elastic element drives the rotating component to engage with the cord lock body, thereby placing the rotating component in a non-rotatable locked state. In this adjustable cord buckle structure, the curtain cord is wound and rolled up onto the rotating component by external force during adjustment. The cord is then released from the rotating component by external force during forward rotation. This design features a simple structure and low production cost. The rotating component is rotated by external force to wind or release the lower end of the curtain cord, thus adjusting the height of the cord buckle body. This design is convenient and prevents the lower beam support from tilting due to inconsistent cord buckle heights, ensuring aesthetics and a superior user experience.
[0005] Optionally, the rotating component is slidably disposed on the rope buckle body in the axial direction. The locking mechanism further includes a positioning tooth and a positioning groove that engages with the positioning tooth. The positioning tooth is disposed on the rotating component, and the rotating component is disposed on the rope buckle body. Under normal conditions, the elastic force of the elastic element drives the positioning tooth to fall into the positioning groove and engage, so that the rotating component engages with the rope buckle body. During adjustment, an external force slides the rotating component in the axial direction, so that the positioning tooth disengages from the positioning groove, so that the rotating component disengages from the engagement state with the rope buckle body.
[0006] Optionally, the positioning protrusions are distributed at equal intervals along the rotation direction of the rotating component, and the positioning grooves are distributed at equal intervals along the rotation direction of the rotating component, wherein the number of positioning grooves is greater than or equal to the number of positioning protrusions.
[0007] Optionally, the rotating component includes a rotating rod and an end cap connected to one end of the rotating rod. The rotating rod and the end cap rotate and slide synchronously. The elastic element abuts between the rotating rod and the rope buckle body. The positioning protrusion is disposed on the end cap.
[0008] Optionally, one end of the rotating component is provided with a manual knob; during adjustment, external force is applied to rotate the manual knob to drive the rotating component to rotate.
[0009] Optionally, the cord buckle body is provided with an inner cavity for installing the rotating component, the cord buckle body is provided with a first through hole and a second through hole communicating with the inner cavity, and the rotating component is provided with a third through hole; when installing the curtain cord, one end of the curtain cord is passed through the first through hole, the third through hole and the second through hole in sequence, and a limiting part is provided at the part where the curtain cord passes through the second through hole. The diameter of the limiting part is larger than the diameter of the third through hole and smaller than the diameter of the second through hole, so that the limiting part passes through the second through hole and is limited at the third through hole.
[0010] Optionally, the rotating component is provided with a groove for limiting the limiting portion.
[0011] Optionally, the elastic element is a compression spring, one end of the elastic element abuts against the rope buckle body, and the other end of the elastic element abuts against the rotating component.
[0012] Optionally, the height-adjustable cord buckle structure further includes a lower crossbeam support, and the cord buckle body is fixedly connected to the lower crossbeam support; two cord buckle bodies and two curtain cords are provided, and each cord buckle body is provided with the rotating component.
[0013] Compared to existing technologies, the adjustable height cord buckle structure of this invention is simple in structure and low in production cost. External force drives the rotating component to rotate, thereby winding or releasing the lower end of the curtain cord, thus adjusting the height of the cord buckle body. This convenient adjustment prevents the lower beam support from tilting due to inconsistent cord buckle heights, ensuring aesthetics and a superior user experience. The rotating component is divided into a rotating rod and an end cap, reducing manufacturing and assembly difficulty and production costs. External force is applied by rotating a manual knob to drive the rotating component, making operation convenient. Since there are two cord buckle bodies, the rotating component on either body can be adjusted to achieve consistent heights for both cord buckle bodies, offering flexible adjustment.
[0014] In addition, this utility model also provides a curtain, including the above-mentioned height-adjustable cord buckle structure. This curtain also has the same beneficial effects of the above-mentioned height-adjustable cord buckle structure, which will not be described in detail here. Attached Figure Description
[0015] Figure 1 This is a perspective view of the adjustable height rope buckle structure of this utility model;
[0016] Figure 2 for Figure 1 Enlarged view of section A in the middle;
[0017] Figure 3 This is a cross-sectional view of the adjustable height rope buckle structure of this utility model. Figure 1 ;
[0018] Figure 4 This is a cross-sectional view of the adjustable height rope buckle structure of this utility model. Figure 2 ;
[0019] Figure 5 for Figure 4 Enlarged view of section B;
[0020] Figure 6 This is a schematic diagram of the rotating component in the height-adjustable rope buckle structure of this utility model;
[0021] Figure 7 This is a schematic diagram of the rope buckle body in the adjustable height rope buckle structure of this utility model;
[0022] Figure 8 This is a schematic diagram of the end cap of the adjustable height rope buckle structure of this utility model;
[0023] The component names corresponding to the various reference numerals in the figure are as follows: 1 is the curtain cord, 101 is the limiting part, 2 is the cord buckle body, 201 is the positioning groove, 202 is the inner cavity, 203 is the first through hole, 204 is the second through hole, 3 is the rotating component, 31 is the rotating rod, 311 is the insertion post, 32 is the end cap, 321 is the insertion groove, 322 is the flange, 301 is the positioning tooth, 302 is the manual knob, 303 is the third through hole, 304 is the groove, 4 is the elastic element, 5 is the lower crossbeam bracket, 6 is the bolt, 7 is the upper crossbeam bracket, 8 is the outer shell, and 9 is the motor. Detailed Implementation
[0024] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.
[0025] In the description of this utility model, it should be understood that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship when the product is in normal use.
[0026] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature.
[0027] See Figures 1-8This utility model provides an adjustable height cord lock structure, including a curtain cord 1, a cord lock body 2, and a rotating component 3. The rotating component 3 is disposed on the cord lock body 2, and one end of the curtain cord 1 is connected to the rotating component 3. The cord lock body 2 and the rotating component 3 are movably engaged. The rotating component 3 has a lockable state and an unlocked state that can be switched between each other. When the rotating component 3 is in the unlocked state, it can rotate. A locking mechanism is provided between the cord lock body 2 and the rotating component 3. The locking mechanism includes an elastic element 4, which is disposed between the cord lock body 2 and the rotating component 3. In the normal state, the elastic force of the elastic element 4 drives the rotating component 3 to engage with the cord lock body 2, so that the rotating component 3 is in a locked state that cannot be rotated. When adjusting, external force is used to engage the rotating component 3 with the cord lock body 2. The rotating component 3 is driven to disengage from the latching state of the cord buckle body 2, thus placing the rotating component 3 in the unlocked state. External force is applied to rotate the rotating component 3 in the forward direction to wind the curtain cord 1 onto the rotating component 3. External force is applied to rotate the rotating component 3 in the reverse direction to release the curtain cord 1 from the rotating component 3. Forward and reverse rotation are opposite directions of rotation. When the adjustment is complete, the external force is removed, and the rotating component 3, under the elastic force of the elastic element 4, re-engages with the cord buckle body 2, thus switching the rotating component 3 back to the locked state. It should be noted that in actual use, when the curtain cord 1 is not wound onto the rotating component 3, rotating the rotating component 3 in any direction will wind the curtain cord 1 onto the rotating component 3.
[0028] This utility model features an adjustable height cord buckle structure that is simple in structure and low in production cost. By using external force to drive the rotating component to rotate, the lower end of the curtain cord can be wound up or released, thereby adjusting the height of the cord buckle body. This adjustment is convenient and prevents the lower beam support from tilting due to the inconsistent height of the two cord buckles, thus avoiding affecting normal use. It also ensures aesthetics and provides a better user experience.
[0029] See Figure 1 , Figure 2 , Figure 6 , Figure 7 and Figure 8 The rotating component 3 is slidably mounted on the rope buckle body 2 along the axial direction. The locking mechanism also includes a positioning tooth 301 and a positioning groove 201 that engages with the positioning tooth 301. The positioning tooth 301 is mounted on the rotating component 3, and the rotating component 3 is mounted on the rope buckle body 2. Under normal conditions, the elastic force of the elastic element 4 drives the positioning tooth 301 to fall into the positioning groove 201 and engage, thereby engaging the rotating component 3 with the rope buckle body 2. During adjustment, an external force slides the rotating component 3 along the axial direction, causing the positioning tooth 301 to disengage from the positioning groove 201, thus disengaging the rotating component 3 from the engagement state with the rope buckle body 2. The operation is convenient. See reference. Figure 2In this embodiment, the axial direction of the rotating component 3 is the X-axis direction; multiple positioning protrusions 301 are evenly distributed along the rotation direction, and multiple positioning grooves 201 are evenly distributed along the rotation direction of the rotating component 3. The number of positioning grooves 201 is greater than or equal to the number of positioning protrusions 301. In this embodiment, the number of positioning grooves 201 is greater than the number of positioning protrusions 301, so that the rotating component 3 can have more positioning angles for positioning, resulting in higher adjustment accuracy. Specifically, there are 6 positioning protrusions 301 and 18 positioning grooves 201.
[0030] See Figure 1 , Figure 2 , Figure 6 , Figure 7 and Figure 8 The rotating component 3 includes a rotating rod 31 and an end cap 32 connected to one end of the rotating rod 31. The rotating rod 31 and the end cap 32 rotate and slide synchronously. The elastic element 4 abuts against the rotating rod 31 and the rope buckle body 2. The positioning protrusion 301 is provided on the end cap 32. The end cap 32 is provided with a flange 322 in an annular shape. The positioning protrusion 301 is provided on the flange 322. One end of the rotating rod 31 is provided with a plug post 311 for inserting into the end cap 32. The end cap 32 is provided with a plug groove 321 for inserting into the plug post 311. The rotating component 3 is divided into a rotating rod 31 and an end cap 32, which reduces the difficulty of manufacturing and assembly and reduces the production cost.
[0031] See Figures 1-7 One end of the rotating component 3 is equipped with a manual knob 302; during adjustment, external force is applied to rotate the manual knob 302 to drive the rotating component 3 to rotate, making operation convenient; the cord buckle body 2 is provided with an inner cavity 202 for installing the rotating component 3, and the cord buckle body 2 is provided with a first through hole 203 and a second through hole 204 communicating with the inner cavity 202, and the rotating component 3 is provided with a third through hole 303; when installing the curtain cord 1, one end of the curtain cord 1 is passed through the first through hole 203, the third through hole 303 and the second through hole 204 in sequence, and then placed on the window... A limiting part 101 is provided at the part of the curtain cord 1 that passes through the second through hole 204. The diameter of the limiting part 101 is larger than the diameter of the third through hole 303, and the diameter of the limiting part 101 is smaller than the diameter of the second through hole 204, so that the limiting part 101 passes through the second through hole 204 and is limited at the third through hole 303. In this embodiment, the limiting part 101 is a knot, but the limiting part 101 can also be set as other spherical or block-shaped objects for limiting. The above-mentioned spherical or block-shaped objects can be fixed to the end of the curtain cord 1 by means of glue, welding or other methods.
[0032] See Figures 4-6 The rotating component 3 is provided with a groove 304 for limiting the limiting part 101, so that the limiting part 101 falls into the groove 304 after installation and is not easily displaced.
[0033] See Figures 1-3 The elastic element 4 is a compression spring. The compression spring has a simple structure and low cost. One end of the elastic element 4 abuts against the cord buckle body 2, and the other end of the elastic element 4 abuts against the rotating component 3. The elastic force generated when the compression spring is compressed drives the rotating component 3 to engage with the cord buckle body 2. The structure is reasonably designed. The height-adjustable cord buckle structure also includes a lower crossbeam bracket 5. The cord buckle body 2 and the lower crossbeam bracket 5 are fixedly connected by bolts 6. There are two cord buckle bodies 2 and two curtain cords 1. Each cord buckle body 2 is equipped with a rotating component 3. In this embodiment, there are two cord buckle bodies 2. The rotating component 3 on any one cord buckle body 2 can be rotated and adjusted as needed to achieve the effect of the two cord buckle bodies 2 having the same height. The adjustment is flexible.
[0034] The adjustable height cord buckle structure of this utility model is simple in structure and low in production cost. External force drives the rotating component to rotate, thereby winding or releasing the lower end of the curtain cord, thus adjusting the height of the cord buckle body. Adjustment is convenient and prevents the lower beam support from tilting due to inconsistent cord buckle heights, ensuring aesthetics and a superior user experience. The rotating component is divided into a rotating rod and an end cap, reducing manufacturing and assembly difficulty and lowering production costs. External force is applied by rotating a manual knob to drive the rotating component, making operation convenient. Two cord buckle bodies are provided, allowing adjustment of the rotating component on either body to achieve consistent heights for both cord buckle bodies, providing flexible adjustment.
[0035] In addition, this utility model also provides a curtain, including the above-mentioned adjustable height cord buckle structure. This curtain also has the same beneficial effects of the above-mentioned adjustable height cord buckle structure, which will not be described in detail here. The curtain of this utility model includes an upper beam support 7, and the upper beam support 7 is provided with a cord winder. The cord winder can be set as a manual cord winder or an electric cord winder. Taking the electric cord winder as an example, the cord winder includes a housing 8, a cord winder shaft, and a motor 9 for driving the cord winder shaft to rotate. The motor 9 has a self-locking function. The cord winder shaft is set inside the housing 8. The upper end of the curtain cord 1 is wound on the cord winder shaft. The motor 9 drives the cord winder shaft to rotate forward and backward to wind up or unwind the curtain cord 1, thereby realizing the lifting and lowering function of the curtain fabric. Manual cord winders and electric cord winders are existing technologies and will not be described in detail here.
[0036] In the description of this disclosure, it should be understood that the terms "upper", "lower", "bottom", "inner", "outer", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure.
[0037] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include at least one of that feature. In the description of this disclosure, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0038] In this disclosure, unless otherwise expressly specified and limited, the terms "installation," "connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.
[0039] In this disclosure, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first feature or in indirect contact with the first feature through an intermediate medium.
[0040] It should be noted that when a component is described as being "set on" another component, it can be directly on the other component or there may be an intervening component. When a component is described as "connected to another component," it can be directly connected to the other component or there may be an intervening component. Furthermore, when a component is described as being "fixedly connected" to another component, the connection can be detachable or non-detachable, such as through socketing, snap-fitting, integral molding, welding, etc., which are achievable in conventional technologies and will not be elaborated upon here.
[0041] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
Claims
1. An adjustable height cord lock structure, comprising: The device includes a curtain cord (1), a cord buckle body (2), and a rotating component (3). The rotating component (3) is disposed on the cord buckle body (2). One end of the curtain cord (1) is connected to the rotating component (3). The cord buckle body (2) and the rotating component (3) are movably engaged. The rotating component (3) has a lockable state and an unlocked state that can be switched between each other. When the rotating component (3) is in the unlocked state, it can rotate. A locking mechanism is provided between the cord buckle body (2) and the rotating component (3). The locking mechanism includes an elastic element (4). The elastic element (4) is disposed between the cord buckle body (2) and the rotating component (3). In normal conditions, the elastic force of the elastic element (4) drives the rotating component (3) to engage with the rope buckle body (2), so that the rotating component (3) is in the locked state where it cannot be rotated. During adjustment, the rotating component (3) is driven by an external force to disengage from the locking state of the cord buckle body (2) so that the rotating component (3) is in the unlocked state; the rotating component (3) is rotated in the forward direction by an external force to wind the curtain cord (1) around the rotating component (3); the rotating component (3) is rotated in the reverse direction by an external force to release the curtain cord (1) from the rotating component (3).
2. The height-adjustable cordlock structure of claim 1, wherein, The rotating component (3) is slidably disposed on the rope buckle body (2) in the axial direction. The locking mechanism also includes a positioning protrusion (301) and a positioning groove (201) that engages with the positioning protrusion (301). The positioning protrusion (301) is disposed on the rotating component (3), and the rotating component (3) is disposed on the rope buckle body (2). In normal condition, the elastic force of the elastic element (4) drives the positioning protrusion (301) to fall into the positioning groove (201) and engage, so that the rotating component (3) engages with the rope buckle body (2). During adjustment, the external force slides the rotating component (3) in the axial direction, so that the positioning protrusion (301) disengages from the positioning groove (201), so that the rotating component (3) disengages from the engagement state with the rope buckle body (2).
3. The height-adjustable cordlock structure of claim 2, wherein, The positioning protrusions (301) are distributed at equal intervals along the rotation direction of the rotating component (3), and the positioning grooves (201) are distributed at equal intervals along the rotation direction of the rotating component (3). The number of positioning grooves (201) is greater than or equal to the number of positioning protrusions (301).
4. The height-adjustable cordlock structure of claim 2, wherein, The rotating component (3) includes a rotating rod (31) and an end cap (32) connected to one end of the rotating rod (31). The rotating rod (31) and the end cap (32) rotate and slide synchronously. The elastic element (4) abuts between the rotating rod (31) and the rope buckle body (2). The positioning protrusion (301) is disposed on the end cap (32).
5. The height-adjustable cordlock of claim 1, wherein, One end of the rotating component (3) is provided with a manual knob (302); during adjustment, external force drives the rotating component (3) to rotate by rotating the manual knob (302).
6. The height-adjustable cordlock structure of claim 1, wherein, The cord buckle body (2) is provided with an inner cavity (202) for installing the rotating component (3). The cord buckle body (2) is provided with a first through hole (203) and a second through hole (204) communicating with the inner cavity (202). The rotating component (3) is provided with a third through hole (303). When installing the curtain cord (1), one end of the curtain cord (1) is passed through the first through hole (203), the third through hole (303) and the second through hole (204) in sequence. A limiting part (101) is provided at the part where the curtain cord (1) passes through the second through hole (204). The diameter of the limiting part (101) is larger than the diameter of the third through hole (303) and smaller than the diameter of the second through hole (204) so that the limiting part (101) passes through the second through hole (204) and is limited at the third through hole (303).
7. The height-adjustable cordlock structure of claim 6, wherein, The rotating component (3) is provided with a groove (304) for limiting the limiting part (101).
8. The height-adjustable cordlock of claim 1, wherein, The elastic element (4) is a compression spring. One end of the elastic element (4) abuts against the rope buckle body (2), and the other end of the elastic element (4) abuts against the rotating component (3).
9. The adjustable height rope buckle structure according to any one of claims 1-8, characterized in that, It also includes a lower crossbeam bracket (5), and the cord buckle body (2) is fixedly connected to the lower crossbeam bracket (5); two cord buckle bodies (2) and two curtain cords (1) are provided, and each cord buckle body (2) is provided with the rotating component (3).
10. A window covering, comprising: Includes the height-adjustable cord buckle structure as described in any one of claims 1-9.