Improved rope winder for curtain
By adopting arc-shaped guard plate limit and snap structure design in the curtain rope roller, the problems of scattered coil ropes and untidy collection of wires during the assembly process of the rope rollers are solved, and the orderly arrangement and efficient assembly of the rope rollers are achieved.
Patent Information
- Application Number
- CN202510881818.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-27
- Publication Date
- 2025-08-01
AI Technical Summary
The existing curtain coiling ropes are prone to scattering during assembly, resulting in low assembly efficiency and uneven lines of the coiling ropes above and below the rolls.
An improved rope reel is designed, including a base, a shield and a reel. The curved guard plate is used to limit and guide the rope upper and lower, and the shield is detachable through a snap structure to facilitate the adjustment of the rope.
The orderly arrangement and winding of the rolled rope is realized, which avoids irregular lines, crossing and overlapping, and improves assembly efficiency.
Smart Images
Figure CN120401945A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a rope winder, in particular to an improved rope winder for curtains, belonging to the technical field of curtains. Background Art
[0002] There are many types of curtains, such as venetian blinds, honeycomb blinds, etc. Their structures mainly include curtain brackets (rails), curtain fabrics, a rope winder for lifting the curtain fabric, and a driving mechanism for driving the rotation of the rope winder. The rope winder is composed of a rope winder bracket, a winding drum, and a rope. To prevent the rope from getting tangled or skipping, in the prior art, a rope guard sleeve is sleeved outside the winding drum, and the rope guard sleeve is integrally assembled with the rope winder. However, in actual production, since the rope winder is installed in the groove of the rail, that is, the rope winder and the rope guard sleeve are first assembled, and then the whole rope winder is assembled into the groove. There are through holes in the groove. After the rope extends from the winding drum, it passes through the through holes and is connected to the curtain fabric. During this process, since the rope has not been fixed (tightened) yet, it is easy to get scattered on the winding drum, and the rope winder has been integrally assembled, so it is impossible to directly adjust and arrange the rope on the winding drum. If you want to adjust the rope, you can only disassemble the rope winder and reassemble it. Therefore, during this process, the operators need to be very careful to avoid the rope getting scattered, resulting in low assembly efficiency. Therefore, for the convenience of assembly and to facilitate the workers to adjust the rope later after installation, someone divides the rope guard sleeve into two parts: a bracket and a wire pressing plate. For example, in the Chinese utility model patent with the publication number CN218206520U and the name "A Venetian Curtain Rope Winder", it includes a winding cylinder, a guide wheel mechanism, and a bracket. The two ends of the winding cylinder are respectively provided with a turning wheel and a fixed wheel. The turning wheel and the fixed wheel are provided with rotating sleeves for cooperating with the bracket to be connected. A wire pressing plate is also provided above the winding cylinder. The wire pressing plate is clamped to the bracket to limit the separation of the winding cylinder from the bracket. A wire pressing convex strip is also provided at one end of the wire pressing plate relatively close to the guide wheel mechanism. The wire pressing convex strip protrudes relative to the winding cylinder. By improving the design compared with the existing rope winder, aiming at the problem of uneven and overlapping winding of the existing rope winder, the wire pressing plate is improved by adding a wire pressing convex strip and adding a guide wheel, reducing the contact between the wire pressing plate and the wire rope, reducing the friction, and making the rope wind evenly around the winding cylinder through the setting of the convex strip, so that the rope shrinks evenly under force and the rope of the rope winder slides smoothly. However, the disadvantage of this structure is that the wire pressing plate and the wire pressing convex strip can only limit and guide the wire wound above the winding cylinder, but the wire wound below the winding cylinder will still have the problem of uneven and overlapping winding. Summary of the Invention
[0003] The purpose of the present invention is to overcome the shortcomings of the existing technology and provide an improved rope winder for curtains that can limit and guide the ropes wound on both the upper and lower sides of the winding drum, ensure that the ropes can be wound in an orderly manner, and avoid the phenomenon of uneven and overlapping winding of the ropes.
[0004] The technical solution of an improved cord winder for a curtain according to the present invention is as follows: It includes a base, a protective cover and a winding drum. A cord passing hole is formed at the bottom of the base. A protective cover is arranged on the upper part of the base. Both ends of the base and both ends of the protective cover are fixedly connected through a snap structure. A winding drum is arranged between the base and the protective cover. Both ends of the winding drum are rotationally matched with both ends of the base and the protective cover through a rotation structure. A cord is wound around the outer wall of the winding drum. One end of the cord passes downward through the cord passing hole. A winding and cord arranging structure for orderly winding the cord is formed between the winding drum, the base and the protective cover.
[0005] Further, the winding and cord arranging structure includes an arc-shaped lower protective plate arranged at the bottom of the base, and an arc-shaped upper protective plate arranged on the protective cover. A cord arranging gap is formed between the outer wall of the winding drum, the arc-shaped lower protective plate and the arc-shaped upper protective plate.
[0006] Further, the distance C of the cord arranging gap is 1 mm - 1.5 mm.
[0007] Further, a reinforcing piece is arranged at the lower part of the arc-shaped lower protective plate.
[0008] Further, the rotation structure includes lower semi-circular shaft holes respectively arranged at both ends of the base, upper semi-circular shaft holes respectively arranged at both ends of the protective cover. The upper semi-circular shaft holes and the lower semi-circular shaft holes are fixedly connected through a snap structure. The upper semi-circular shaft holes and the lower semi-circular shaft holes form a complete shaft hole. A bearing is arranged in the complete shaft hole. End caps are respectively arranged at both ends of the winding drum. A rotating shaft is arranged on the outer wall of the end cap far away from the winding drum. The rotating shaft is inserted into the bearing, and the rotating shaft is rotationally matched with the bearing.
[0009] Further, a square shaft hole is formed in the rotating shaft, and a square shaft is inserted into the square shaft hole.
[0010] Further, the snap structure includes protruding buckle plates arranged on the outer walls on both sides of the lower semi-circular shaft holes, and snaps arranged on the outer walls on both sides of the upper semi-circular shaft holes. The snaps and the buckle plates are tightly buckled and matched.
[0011] The beneficial effects of an improved cord winder for a curtain according to the present invention are as follows: First, by using the arc-shaped upper protective plate of the protective cover above the winding drum and the arc-shaped lower protective plate of the base below the winding drum, the upper and lower sides of the cord wound around the outer wall of the winding drum can play a role in limiting and guiding, so that the cord can be wound orderly during winding, avoiding phenomena such as uneven winding, crossing, overlapping, and skipping of the cord. Second, the protective cover is detachably arranged on the base. When assembling the cord, if the cord gets tangled, only need to remove the protective cover, readjust and arrange the cord, and then buckle the protective cover back, which improves the assembly efficiency. Description of the Drawings
[0012] Figure 1 It is a three-dimensional schematic diagram of an improved cord winder for a curtain according to the present invention; Figure 2 It is a schematic structural diagram of an improved rope winder for a curtain of the present invention; Figure 3 is Figure 2 A partial enlarged schematic view at position A of Figure 4 It is a three-dimensional schematic view of the disassembled state of an improved rope winder for a curtain of the present invention; Figure 5 It is a three-dimensional schematic view of the protective cover; Figure 6 It is a three-dimensional schematic view of the base; Figure 7 It is a three-dimensional schematic view of the mating state of an improved rope winder for a curtain of the present invention with a track and a curtain body.
[0013] In the figure, 1 is the base; 11 is the arc-shaped lower protection plate; 12 is the lower semi-circular shaft hole; 13 is the bearing; 14 is the buckle plate; 15 is the rope threading hole; 16 is the reinforcing piece; 2 is the protective cover; 21 is the arc-shaped upper protection plate; 22 is the upper semi-circular shaft hole; 23 is the buckle; 3 is the winding drum; 31 is the rope arranging gap; 32 is the end cover; 33 is the rotating shaft; 34 is the square shaft hole; 4 is the winding rope; 100 is the track; 101 is the perforation; 102 is the curtain body; 103 is the end cap; 104 is the pulling rope; 105 is the gear transmission assembly. Detailed implementation manners
[0014] The present invention relates to an improved rope winder for a curtain. As Figure 1 — Figure 7 shown, it includes a base 1, a protective cover 2 and a winding drum 3. A rope threading hole 15 is provided at the bottom of the base 1. The protective cover 2 is arranged on the upper part of the base 1. Both ends of the base 1 and both ends of the protective cover 2 are fixedly connected through a buckle structure. The winding drum 3 is arranged between the base 1 and the protective cover 2. Both ends of the winding drum 3 are rotationally matched with both ends of the base 1 and the protective cover 2 through a rotating structure. A winding rope 4 is wound around the outer wall of the winding drum 3. One end of the winding rope 4 passes downward through the rope threading hole 15. A winding and rope arranging structure for orderly winding the winding rope 4 is formed between the winding drum 3 and the base 1 and the protective cover 2.
[0015] Furthermore, the winding and rope arranging structure includes an arc-shaped lower protection plate 11 arranged at the bottom of the base 1 and an arc-shaped upper protection plate 21 arranged on the protective cover 2. A rope arranging gap 31 is formed between the outer wall of the winding drum 3 and the arc-shaped lower protection plate 11 and the arc-shaped upper protection plate 21. Through the arc-shaped lower protection plate 11 and the arc-shaped upper protection plate 21, the winding ropes 4 wound on both the upper and lower sides of the winding drum 3 can be limited and guided, so that the winding ropes will not jump lines (that is, for the winding ropes wound in a spiral shape, the winding ropes located behind will not jump to the front), thereby ensuring that the winding ropes 4 can be arranged and wound orderly.
[0016] Further, the distance C of the rope arranging gap 31 is 1 mm - 1.5 mm. The distance of the rope arranging gap 31 is greater than the diameter of one winding rope 4 and less than the diameter of two winding ropes 4, and the diameter of the winding rope 4 is usually 1 mm.
[0017] Further, a reinforcing piece 16 is arranged at the lower part of the arc-shaped lower guard plate 11. With the reinforcing piece 16, the structural strength of the lower part of the arc-shaped lower guard plate 11 and the bottom of the base 1 is improved.
[0018] Further, the rotating structure includes lower semi-circular shaft holes 12 respectively arranged at both ends of the base 1, upper semi-circular shaft holes 22 respectively arranged at both ends of the guard cover 2, and the upper semi-circular shaft holes 22 and the lower semi-circular shaft holes 12 are fixedly connected through a snap structure. The upper semi-circular shaft holes 22 and the lower semi-circular shaft holes 12 form a complete shaft hole, and bearings 13 are arranged in the complete shaft hole. End caps 32 are respectively arranged at both ends of the drum 3, and a rotating shaft 33 is arranged on the outer wall of one side of the end cap 32 far away from the drum 3. The rotating shaft 33 is inserted into the bearing 13, and the rotating shaft 33 is rotationally matched with the bearing 13. During installation, first insert the end caps 32 at both ends of the drum 3 respectively, and wind a certain number of turns of the winding rope 4 around the drum 3. One end of the winding rope 4 can be fixedly connected to the end cap 32 far away from the rope threading hole 15, and the other end of the winding rope 4 passes through the rope threading hole 15 of the base 1. Then, put the bearing 13 on the outer wall of the rotating shaft 33 at both ends of the end cap 32 of the drum 3, and then place the drum 3 on the base 1. The bearing 13 is stuck in the lower semi-circular shaft hole 13 of the base 1, and the lower part of the bearing 13 is matched with the lower semi-circular shaft hole 13. Finally, cover the guard cover 2 on the upper part of the base 1. The upper semi-circular shaft holes 22 at both ends of the guard cover 2 are matched with the upper part of the bearing 13, and the front and rear sides of the upper semi-circular shaft holes 22 and the front and rear sides of the lower semi-circular shaft holes 12 are fixedly connected through a snap structure, so that the whole rope winder is assembled. Finally, the whole rope winder can be clamped into the track. The guard cover 2 is detachably arranged on the base 1. When the winding rope 4 needs to be adjusted, only need to remove the guard cover 2, readjust and arrange the winding rope 4, and then buckle the guard cover 2 back, which improves the assembly efficiency.
[0019] Further, a square shaft hole 34 is opened in the rotating shaft 33, and a square shaft 35 is inserted into the square shaft hole 34. The square shaft 35 can be inserted into the square shaft hole 34 to drive the rotating shaft 33 and the drum 3 to rotate.
[0020] Further, the snap structure includes protruding buckle plates 14 arranged on the outer walls of both sides of the lower semi-circular shaft hole 12, and snaps 23 arranged on the outer walls of both sides of the upper semi-circular shaft hole 22. The snaps 23 and the buckle plates 14 are tightly buckled and matched. Through the cooperation of the snaps 23 and the buckle plates 14, the installation and disassembly of the guard cover 2 are very convenient.
[0021] The present invention discloses an improved cord winder for curtains, which can be applicable to various curtains, such as venetian blinds, honeycomb blinds, etc. The curtain mainly includes a track 100. The cord winder is fixed in the track 100. A perforation 101 is opened at the bottom of the track 100. The cord passing hole 15 in the cord winder base 1 corresponds to the perforation 101. A curtain body 102 is arranged at the lower part of the track 100. One end of the cord 4 of the cord winder passes through the cord passing hole 15 and the perforation 101 and then reaches the bottom of the curtain body 102 and is fixedly connected thereto. End caps 103 are arranged at both ends of the track 100. A driving structure is arranged in the track 100 inside the end caps 103. The driving structure can be composed of a manual pull cord 104 and a gear transmission assembly 105, etc., or can be motor-driven. The output shaft of the gear transmission assembly 105 or the motor is connected to the square shaft 35 of the cord winder. During operation, the square shaft 35 is driven to rotate by the driving structure. The square shaft 35 cooperates with the square shaft hole 34 of the rotating shaft 33 to drive the rotating shaft 33 and the winding drum 3 to rotate together. The winding drum 3 drives the cord 4 to be spirally wound or unwound on the winding drum 3. When the cord 4 is gradually wound, it drives the bottom of the curtain body 102 to gradually move upward, so that the curtain body 102 gradually contracts. When the cord 4 is gradually unwound, it drives the bottom of the curtain body 102 to gradually move downward, so that the curtain body 102 gradually unfolds. No matter whether the winding drum 3 drives the cord 4 to be spirally wound forward or unwound reversely, at the upper part of the winding drum 3, the arc-shaped upper guard plate 21 of the guard 2 is in limit and guiding cooperation with the cord 4, and at the lower part of the winding drum 3, the arc-shaped lower guard plate 11 of the base 1 is in limit and guiding cooperation with the cord 4. The distance of the cord arranging gap 31 formed between the arc-shaped upper guard plate 21 and the arc-shaped lower guard plate 11 and the winding drum 3 is greater than the diameter of one cord 4 and less than the diameter of two cords 4. Therefore, no matter whether the winding drum 3 rotates forward or reversely, the cord 4 will not appear phenomena such as uneven wire winding, crossing, overlapping, wire jumping, etc., ensuring that the cord 4 can be arranged orderly, so that the curtain can be smoothly stretched and unfolded and folded.
[0022] The above specific implementation manners are used to explain and illustrate the present invention, which are only the preferred embodiments of the present invention and do not limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and protection scope of the claims of the present invention fall within the protection scope of the present invention.
Claims
1. An improved cord winder for a curtain, characterized in that: It includes a base (1), a protective cover (2) and a reel (3). A rope passing hole (15) is formed at the bottom of the base (1). The protective cover (2) is arranged on the upper part of the base (1). Both ends of the base (1) and both ends of the protective cover (2) are fixedly connected through a buckle structure. A reel (3) is arranged between the base (1) and the protective cover (2). Both ends of the reel (3) are rotationally matched with both ends of the base (1) and the protective cover (2) through a rotation structure. A winding rope (4) is wound around the outer wall of the reel (3). One end of the winding rope (4) passes downward through the rope passing hole (15). A winding and rope arranging structure for orderly winding the winding rope (4) is formed between the reel (3), the base (1) and the protective cover (2).
2. The improved cord winder for a curtain according to claim 1, characterized in that: The winding and rope arranging structure includes an arc-shaped lower protective plate (11) arranged at the bottom of the base (1), and an arc-shaped upper protective plate (21) arranged on the protective cover (2). A rope arranging gap (31) is formed between the outer wall of the reel (3), the arc-shaped lower protective plate (11) and the arc-shaped upper protective plate (21).
3. The improved cord winder for a curtain according to claim 2, wherein: The distance C of the rope arranging gap (31) is 1 mm - 1.5 mm.
4. The improved cord winder for a curtain according to claim 2, wherein: Reinforcing pieces (16) are arranged at the lower part of the arc-shaped lower protective plate (11).
5. An improved cord winder for a curtain according to claim 1, characterized in that: The rotation structure includes lower semi-circular shaft holes (12) respectively arranged at both ends of the base (1), upper semi-circular shaft holes (22) respectively arranged at both ends of the protective cover (2). The upper semi-circular shaft holes (22) and the lower semi-circular shaft holes (12) are fixedly connected through a buckle structure. The upper semi-circular shaft holes (22) and the lower semi-circular shaft holes (12) form a complete shaft hole. A bearing (13) is arranged in the complete shaft hole. End caps (32) are respectively arranged at both ends of the reel (3). A rotating shaft (33) is arranged on the outer wall of the end cap (32) far away from the reel (3). The rotating shaft (33) is inserted into the bearing (13). The rotating shaft (33) is rotationally matched with the bearing (13).
6. The improved cord winder for a curtain according to claim 5, characterized in that: A square shaft hole (34) is formed in the rotating shaft (33), and a square shaft (35) is inserted into the square shaft hole (34).
7. The improved cord winder for a curtain according to claim 5, characterized in that: The buckle structure includes protruding buckle plates (14) arranged on the outer walls on both sides of the lower semi-circular shaft hole (12), and buckles (23) arranged on the outer walls on both sides of the upper semi-circular shaft hole (22). The buckles (23) and the buckle plates (14) are tightly buckled and matched.