Pulley guide for day-night honeycomb blind cord
Patent Information
- Application Number
- CN202522591831.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-05
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-12-05
AI Technical Summary
The roller cords of day and night honeycomb blinds are prone to wear and tear during repeated winding and unwinding, especially in large blinds where the copper rings wear out severely, leading to rope jamming and breakage, which affects their use.
A pulley guide device is installed in the base plate. The pulley works in conjunction with the rope winding to reduce wear and ensure smooth winding and guidance.
It reduces wear on the roller cord, extends its service life, and makes switching between daytime and nighttime blinds smoother.
Smart Images
Figure CN224931598U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a pulley guide device for a day and night honeycomb blind roller cord, belonging to the field of curtains. Background Technology
[0002] The day and night honeycomb blind consists of two honeycomb blinds: one with good light transmission and the other with good light blocking. Users can flexibly switch between light-transmitting and light-blocking blinds during the day or night to meet different light control needs. The day and night honeycomb blinds mainly consist of a track, within which are installed daytime blind and nighttime blind cord rollers. A first blind is connected to the track, and a second blind is connected to the first blind (the first blind can be a daytime blind and the second a nighttime blind, or vice versa). The daytime blind cord roller winds the cord in a forward direction, with the other end passing through both the first and second blinds, exiting through a first perforation at the bottom of the second blind, and then passing upwards through a second perforation at the bottom of the second blind, passing back through both the first and second blinds, before winding in the opposite direction around the nighttime blind cord roller. When the daytime and nighttime blind cord rollers rotate synchronously, the cord on the daytime blind roller unwinds, while the cord on the nighttime blind roller winds up. This winding of the cord causes the first blind to retract (a limiting baffle can be installed at the bottom of the first blind where the cord is located), and the second blind to unfold, or vice versa, thus switching between daytime and nighttime blinds. Because the winding cord is repeatedly wound up and down, it exits through the first perforation at the bottom of the second curtain and then re-enters upwards through the second perforation at the bottom of the second curtain. Friction occurs at the corner between the first and second perforations. Existing technology usually involves placing a copper ring in the perforation to reduce wear during winding up and down. However, the copper ring will still wear down over time, especially when the honeycomb blind is large and heavy. The copper ring is very prone to wear, which can easily cause the cord to jam and break, thus affecting normal use. Summary of the Invention
[0003] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a pulley guide device for the day and night honeycomb curtain rope that provides smooth and guiding function for the rope at the bottom of the second curtain when the rope is repeatedly wound and unwound, reduces the wear of the rope, and ensures its service life.
[0004] The technical solution of the pulley guide device for the day and night honeycomb blind rope of this utility model is as follows: It includes a track, in which a daytime blind rope roller and a nighttime blind rope roller are installed. The daytime blind rope roller and the nighttime blind rope roller are connected by a single rope. A first curtain is installed below the track, a second curtain is installed below the first curtain, and a base plate is installed below the second curtain. One end of the rope is connected to the daytime blind rope roller, and the other end of the rope passes downward through the track, the first curtain, the second curtain, and the base plate, and then upward through the base plate, the second curtain, the first curtain, and the track to connect to the nighttime blind rope roller. A first fixed seat and a second fixed seat are installed in the base plate. A through hole and a mounting groove are respectively formed in the first and second fixed seats, and the through hole and the mounting groove correspond to each other. A pulley is installed in the mounting groove, and both ends of the pulley are rotatably connected to the mounting groove via a rotating shaft. The rope passes through the through hole and engages with the outer wall of the pulley.
[0005] Furthermore, a positioning hole is provided in the base plate, and positioning seats are respectively provided on the first fixing seat and the second fixing seat, and the positioning seats are positioned and locked in place with the positioning hole.
[0006] Furthermore, the positioning hole is rectangular, and the corresponding positioning seat is rectangular.
[0007] Furthermore, a concave arc groove is provided in the middle of the pulley.
[0008] The beneficial effects of this utility model of a pulley guide device for a day and night honeycomb blind roller cord are as follows: By setting a first fixed seat and a second fixed seat in the base plate, and setting corresponding pulleys in the two fixed seats respectively, the roller cord can cooperate with the pulleys when turning through the position. The pulleys play a smoothing and guiding role on the roller cord after turning, reducing the wear of the roller cord when it makes repeated winding and unwinding movements, ensuring the service life of the roller cord, and making the operation of the roller cord to switch between day and night blinds smoother. Attached Figure Description
[0009] Figure 1 This is a schematic diagram of the honeycomb curtain structure for day and night; Figure 2 yes Figure 1 A magnified view of part A; Figure 3 yes Figure 1 A magnified view of part B; Figure 4 It is a three-dimensional schematic diagram of the base plate in conjunction with the first fixed seat, the second fixed seat, and the coiled rope; Figure 5 This is a three-dimensional exploded view of the base plate, the first fixing seat, and the second fixing seat. Figure 6 This is a three-dimensional schematic diagram of a positioning seat installed at the bottom of the first fixed seat.
[0010] In the diagram: 1. Track; 2. Day curtain cord reel; 3. Night curtain cord reel; 4. Cord; 5. First curtain; 6. Second curtain; 7. Base plate; 8. First fixing seat; 9. Second fixing seat; 10. Perforation; 11. Mounting groove; 12. Pulley; 13. Rotating shaft; 14. Positioning hole; 15. Positioning seat; 16. Concave arc groove; 17. Limiting baffle. Detailed Implementation
[0011] To enable those skilled in the art to better understand the technical solution of this utility model, the preferred embodiments of this utility model are described below in conjunction with specific examples. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote elements with the same or similar functions throughout. However, it should be understood that the drawings are for illustrative purposes only and should not be construed as limiting this utility model. To better illustrate this embodiment, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product size. It is understandable for those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are for illustrative purposes only and should not be construed as limiting this utility model.
[0012] It should be noted that the terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this utility model are intended to cover non-exclusive inclusion. The terms "set," "equipped with," "installed," "connected," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two mechanisms, elements, or components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0013] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the mechanism or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0014] To further illustrate the content, features, and effects of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and examples, but it should not be construed as a basis for limiting this utility model.
[0015] This utility model relates to a pulley guide device for the day and night honeycomb curtain roller cord, such as... Figure 1 — Figure 6As shown, the system includes a track 1, in which a day curtain roller 2 and a night curtain roller 3 are installed. The day curtain roller 2 and the night curtain roller 3 are connected by a single roller rope 4. A first curtain 5 is installed below the track 1, a second curtain 6 is installed below the first curtain 5, and a base plate 7 is installed below the second curtain 6. One end of the roller rope 4 is connected to the day curtain roller 2, and the other end of the roller rope 4 passes downward through the track 1, the first curtain 5, the second curtain 6, and the base plate 7, and then passes upward through the base plate 7, the second curtain 6, the first curtain 5, and the track 1 to connect to the night curtain roller 3. A first fixing seat 8 and a second fixing seat 9 are installed in the base plate 7. A through hole 10 and a mounting groove 11 are respectively opened in the first fixing seat 8 and the second fixing seat 9. The through hole 10 and the mounting groove 11 correspond to each other. A pulley 12 is installed in the mounting groove 11. The two ends of the pulley 12 are rotatably connected to the mounting groove 11 via a rotating shaft 13. The roller rope 4 passes through the through hole 10 and cooperates with the outer wall of the pulley 12.
[0016] Furthermore, a positioning hole 14 is provided in the base plate 7, and a positioning seat 15 is respectively provided on the first fixed seat 8 and the second fixed seat 9. The positioning seat 15 is positioned and locked in place with the positioning hole 14. With the positioning hole 14 and the positioning seat 15, the first fixed seat 8 and the second fixed seat 9 are easy to assemble with the base plate 7, the positioning is accurate, and the rotation of the first fixed seat 8 and the second fixed seat 9 is avoided during the winding and unwinding of the rope 4.
[0017] Furthermore, the positioning hole 14 is rectangular, and the corresponding positioning seat 15 is rectangular.
[0018] Furthermore, a concave groove 16 is provided in the middle of the pulley 12. The outer diameter of the pulley 12 is large on both sides and gradually narrows in the middle, so that a concave groove 16 is formed in the middle of the pulley 12. With the concave groove 16, the passing rope 4 can be guided to ensure that the rope 4 will not deviate during the winding and unwinding process.
[0019] This utility model discloses a pulley guide device for the day and night honeycomb blind rope rollers. The day and night honeycomb blind mainly includes a track 1, in which a daytime blind rope roller 2 and a nighttime blind rope roller 3 are installed. The daytime blind rope roller 2 and the nighttime blind rope roller 3 are in sets of one or more, depending on the width and height of the day and night blinds. Usually, there are two sets of daytime blind rope rollers 2 and nighttime blind rope rollers 3 (the specific structure of the honeycomb blind rope rollers is existing technology). The daytime blind rope roller 2 and the nighttime blind rope roller 3 are driven to rotate by a power source (either by manually pulling the rope to drive the rope roller to rotate, or by a motor driving the rope roller to rotate). A pulley guide is connected to the daytime blind rope roller 2 and the nighttime blind rope roller 3. The winding rope 4 is installed at the lower part of the track 1, with a first curtain 5 and a second curtain 6 installed below the first curtain 5. The first curtain 5 can be a day curtain (a honeycomb blind with good light transmission) and the second curtain 6 can be a night curtain (a honeycomb blind with good light blocking). Alternatively, the first curtain 5 can be a night curtain and the second curtain can be a day curtain. One end of the winding rope 4 is wound in the forward direction around the outer wall of the day curtain winding rope device 2, and the other end of the winding rope 4 passes downward through the track 1, the first curtain 5 (the winding rope 4 is located below the first curtain 5 and a limiting baffle 17 is installed), the second curtain 6, and the through hole 10 of the first fixing seat 8 in the base plate 7, and passes around the pulley 12 of the first fixing seat 8 to the pulley 12 of the second fixing seat 9. Then, it passes through the through hole 10 of the second fixing seat 9, and goes upwards through the second curtain 6, the first curtain 5, and the track 1 to the night curtain winder 3. The winder 4 is wound in the opposite direction around the outer wall of the night curtain winder 3. When in use, when the power drives the day curtain winder 2 and the night curtain winder 3 to rotate synchronously, when the day curtain winder 2 rotates in the forward direction, one end of the winder 4 is gradually wound up on the day curtain winder 2. The winder 4 drives the first curtain 5 (the first curtain is the day curtain) to fold up through the limiting baffle 17, while the winder 4 on the night curtain winder 3 is unwound. The winder 4 drives the second curtain 6 (the second curtain is the night curtain) to unfold. At this time, the night curtain is used for light blocking. When the power drives When the day blind winder 2 rotates in the reverse direction, one end of the winder 4 gradually loosens on the day blind winder 2. The limiting baffle 17 then drives the first curtain 5 to unfold, while the winder 3 winds up the winder 4. The winder 4 drives the second curtain 6 to fold. At this time, the day blind is in a light-transmitting state. When the winder 4 repeatedly winds and unwinds, the bottom of the winder 4 cooperates with the pulleys 12 of the first fixed seat 8 and the second fixed seat 9. The winder 4 drives the pulleys 12 to rotate. The pulleys 12 can smooth and guide the winder 4, so that the winder 4, which turns through this position, will not wear out during long-term operation, thus ensuring the service life of the winder 4.
[0020] Although the embodiments of this application disclose the above-described methods, the content is merely an implementation method adopted for ease of understanding. Any person skilled in the art should understand that any modifications and changes in the form and details of the implementation can be made without departing from the spirit and scope disclosed in this utility model. However, the patent protection scope of this utility model shall still be determined by the scope defined in the appended claims.
Claims
1. A pulley guide device for a day and night honeycomb blind rope, comprising a track (1), wherein a daytime blind rope roller (2) and a nighttime blind rope roller (3) are arranged in the track (1), the daytime blind rope roller (2) and the nighttime blind rope roller (3) are connected to a single rope (4), a first curtain (5) is arranged below the track (1), a second curtain (6) is arranged below the first curtain (5), and a base plate (7) is arranged below the second curtain (6), one end of the rope (4) is connected to the daytime blind rope roller (2), and the other end of the rope (4) passes downward through the track (1), the first curtain (5), the second curtain (6) and the base plate (7), and then passes upward through the base plate (7), the second curtain (6), the first curtain (5) and the track (1) to connect to the nighttime blind rope roller (3), characterized in that: The base plate (7) is provided with a first fixed seat (8) and a second fixed seat (9). A through hole (10) and a mounting groove (11) are respectively opened in the first fixed seat (8) and the second fixed seat (9). The through hole (10) and the mounting groove (11) correspond to each other. A pulley (12) is provided in the mounting groove (11). The two ends of the pulley (12) are rotatably connected to the mounting groove (11) via a rotating shaft (13). The coiled rope (4) passes through the through hole (10) and cooperates with the outer wall of the pulley (12).
2. The pulley guide device for a day and night honeycomb curtain roller rope as described in claim 1, characterized in that: The base plate (7) has a positioning hole (14), and the first fixed seat (8) and the second fixed seat (9) are respectively provided with positioning seats (15), and the positioning seats (15) are positioned and locked with the positioning hole (14).
3. The pulley guide device for a day and night honeycomb curtain roller rope as described in claim 2, characterized in that: The positioning hole (14) is rectangular, and the corresponding positioning seat (15) is rectangular.
4. The pulley guide device for a day and night honeycomb curtain roller rope as described in claim 1, characterized in that: The pulley (12) is provided with a concave arc groove (16) in the middle.