Full-shading roller shutter

Abstract

The invention discloses a full-shading roller shutter, which comprises a first curtain assembly capable of moving a first sunshade curtain from top to bottom, and is characterized in that a second curtain assembly capable of moving a second sunshade curtain from bottom to top is arranged on the full-shading roller shutter, and the second curtain assembly and the first curtain assembly can independently shade the sun; the second curtain assembly comprises a curtain rotating module serving as a main body, side rail assemblies are arranged on the two sides of the curtain rotating module, and the other ends of the side rail assemblies are fixedly connected with the first curtain assembly. According to the novel structure, on the basis of an existing first curtain assembly, the independent second curtain assembly is additionally arranged, the first sunshade curtain of the first curtain assembly operates from top to bottom, the second sunshade curtain of the second curtain assembly operates from bottom to top, double shading is achieved, external light is prevented from irradiating into a room, and the indoor full-shading effect is achieved.

Description

Technical Field

[0001] This invention relates to the field of electric curtain manufacturing technology, and in particular to a blackout roller blind. Background Technology

[0002] Curtains are common decorative items, serving functions such as sunshade, heat insulation, and regulating indoor light. Curtains come in various types. As people's requirements for home life continue to improve, the application of outdoor sunrooms is becoming more and more common. These sunrooms are constructed with glass and metal frames, allowing sunlight to enter through both the roof and the walls. Therefore, the roof and walls of these sunrooms are usually equipped with sunshade curtains. When users want to make the indoor lighting darker, they can draw the sunshade curtains to adapt to different light intensities and meet the needs of users in different application scenarios.

[0003] For example, Chinese patent application number CN202421728117.7, titled "An Electric Honeycomb Sunshade Curtain," describes a system that uses an adjustable structure... When fully opened, a second dual-axis motor is activated, causing a rotating rod to rotate, which in turn moves a second fixed rod upwards, achieving the effect of full opening. However, since the honeycomb sunshade curtain itself is only one piece, even when fully lowered for sunshade, some light will still penetrate, preventing complete shading of the interior.

[0004] For example, Chinese patent application number CN202420080834.7, titled "A Retractable Electric Sunshade Curtain," includes a window frame and a sunshade curtain body... The extension rod has a clearance opening near the top rod, which allows the leaf lifting rope to move. This achieves the technical advantage that "the invention can be adjusted according to the window size." However, its sunshade curtain body is also only one piece; even when fully lowered, some light will still shine in, and it cannot achieve complete blackout of the room.

[0005] Therefore, existing motorized curtains are basically single-piece blackout curtains that achieve limited light blocking by moving up and down. With the development of user personalization, in certain application scenarios (such as private cinemas or when sleeping), there are higher requirements for indoor brightness, and no residual light can be allowed to enter. Therefore, the market urgently needs a curtain that can block out all external light. Summary of the Invention

[0006] The purpose of this invention is to provide a blackout roller blind to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, the present invention is achieved through the following technical measures: a blackout roller blind, comprising a first curtain assembly capable of moving a first sunshade curtain from top to bottom, characterized in that: a second curtain assembly capable of moving a second sunshade curtain from bottom to top is provided on the blackout roller blind, the second curtain assembly and the first curtain assembly can independently provide sunshade, the second curtain assembly includes a curtain rotating module as the main body, and side rail assemblies are provided on both sides of the curtain rotating module, the other end of the side rail assembly being fixedly connected to the first curtain assembly.

[0008] Compared with the prior art, the advantages of the present invention are as follows: This novel structure adds an independent second curtain assembly to the existing first curtain assembly. The first sunshade of the first curtain assembly runs from top to bottom, and the second sunshade of the second curtain assembly runs from bottom to top, providing double shading to prevent external light from shining into the room and achieving a complete blackout effect.

[0009] As an improvement of the present invention, the side rail assembly includes a side rail, on which a pull cord assembly is installed. The pull cord assembly includes a first pull cord upper fixing module, a tension spring connected to the first pull cord upper fixing module, and a pull cord tensioner module connected to the other end of the tension spring. The pull cord tensioner module is connected to a second pull cord upper fixing module through one end of the roller blind pull cord, and the pull cord tensioner module is connected to a pull cord lower fixing module through the other end of the roller blind pull cord. The pull cord lower fixing module is connected to a lifting curtain fixing module through the roller blind pull cord, and the lifting curtain fixing module is fixedly connected to a lifting beam rod (the lifting beam rod is connected to a second sunshade curtain). The purpose of this design is as follows: The function of the first pull cord fixing module is to fix one end of the tension spring and guide the roller blind pull cord; the function of the second pull cord fixing module is to allow the roller blind pull cord to pass around it, acting as a fixed pulley; the function of the pull cord tensioner module is to fix the other end of the tension spring, and after the roller blind pull cord passes around it, it acts as a movable pulley; the function of the pull cord lower fixing module is to allow the roller blind pull cord to pass around it, acting as a fixed pulley; the function of the lifting curtain fixing module is to connect the roller blind pull cord and fix it to the lifting beam rod, realizing the synchronous up and down movement of the roller blind pull cord and the lifting beam rod (second sunshade).

[0010] As an improvement to the present invention, the fixing module on the first pull rope has the same structure as the fixing module on the second pull rope. The purpose of choosing this design is to facilitate installation and reduce production costs.

[0011] As an improvement of the present invention, the first pull cord fixing module includes an upper fixing seat, on which a pull cord pulley, a guide wheel cover, and a flat screw are sequentially fixedly connected; the pull cord tensioner module includes a pull cord tensioning seat, on which a pull cord pulley, a guide wheel cover, and a flat screw are sequentially fixedly connected. The purpose of this design is as follows: the upper fixing seat serves as a carrier for the parts mounted thereon; the pull cord pulley guides the roller blind pull cord, ensuring quiet operation, noise reduction, and durability; the guide wheel cover covers the roller blind pull cord, preventing it from detaching; and the flat screw fixes the pull cord pulley, ensuring precise positioning and sufficient strength. The function of the pull cord tensioner module is to address the issue of stacking of the roller blind pull cord on ordinary drive wheels, which increases the outer diameter and circumference of the stacked cord, causing the speed of increase to be out of sync with the winding tube. The pull cord tensioner module plays a crucial role in solving this problem, reciprocating on the side rail to keep the roller blind pull cord constantly taut. This module, composed of tension springs, effectively eliminates the inconsistency in circumference caused by winding, ensuring that the sunshade curtain fabric remains in a pre-fixed state, maintaining verticality and flatness.

[0012] As an improvement of the present invention, the lower fixing module for the pull cord includes a lower fixing base, on which a pull cord pulley, a guide wheel cover, and a flat screw are sequentially fixedly connected. The purpose of this design is as follows: the lower fixing base serves as a carrier for the parts mounted thereon; the pull cord pulley guides the roller blind pull cord, ensuring quiet operation, reduced noise, and durability; the guide wheel cover covers the roller blind pull cord, preventing it from easily coming loose; and the flat screw fixes the pull cord pulley, ensuring precise positioning and sufficient strength.

[0013] As an improvement of the present invention, the side rail is provided with an inner groove, and the upper fixing seat is provided with an I-shaped fastening part that cooperates with and connects to the inner groove; the pull rope tensioning seat is provided with an I-shaped fastening part that cooperates with and connects to the inner groove. The purpose of this design is that the inner groove and the I-shaped fastening part cooperate and connect, allowing it to move up and down along the side rail without falling off; the upper fixing seat and the pull rope tensioning seat are both provided with I-shaped fastening parts, which allows these two components to maintain the same center line, and their function is to prevent the roller blind pull rope from interfering with each other.

[0014] As an improvement of the present invention, the side rail is provided with an I-beam rib, located next to the recessed section, and the lower fixing seat is provided with an open-type fastening part that cooperates with and connects to the I-beam rib. The purpose of this design is that the I-beam rib and the open-type fastening part cooperate and connect, allowing the side rail to move up and down without falling off. The position of the I-beam rib next to the recessed section prevents the roller blind pull cords from interfering with each other.

[0015] As an improvement of the present invention, the pull rope pulley is provided with an arc-shaped groove, and the guide wheel cover is provided with a guide wire opening. The purpose of this design is that the arc-shaped groove and the guide wire opening serve to guide the roller blind pull rope and extend its service life.

[0016] As an improvement of the present invention, the upper fixing seat is provided with a lug for fixing the cylindrical pin. The purpose of this design is that the cylindrical pin allows the tension spring to hook onto the cylindrical pin and connect to the tension spring.

[0017] As an improvement of the present invention, a balance rod is fixedly connected to one end of the side rail assembly near the first curtain assembly. The purpose of this design is to make the entire curtain frame more stable. Attached Figure Description

[0018] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0019] In the attached diagram: Figure 1 This is a perspective view of the blackout roller blind described in this invention.

[0020] Figure 2 This is a perspective view of the second curtain assembly described in this invention.

[0021] Figure 3 This is a schematic diagram of the pull rope assembly described in this invention.

[0022] Figure 4 This is an exploded view of the fixing module on the first pull rope according to the present invention.

[0023] Figure 5 This is an exploded view of the rope tensioner module described in this invention.

[0024] Figure 6 is an exploded view of the lower fixing module of the pull rope according to the present invention.

[0025] Figure 7 is a schematic diagram of the assembly of the rope pulley and guide wheel cover according to the present invention.

[0026] Figure 8 This is a perspective view of the upper fixing base described in this invention.

[0027] Figure 9 This is a perspective view of the lower fixing base described in this invention.

[0028] Figure 10 This is a three-dimensional cross-sectional view of the side rail described in this invention.

[0029] Figure 11 This is a schematic diagram showing the force applied to the roller blind pull rope described in this invention.

[0030] Explanation of reference numerals in the attached drawings: 1. First sunshade curtain; 2. First curtain assembly; 3. Second sunshade curtain; 4. Second curtain assembly; 5. Curtain rotation module; 6. Side rail assembly; 7. Side rail; 8. First pull cord upper fixing module; 9. Tension spring; 10. Pull cord tensioner module; 11. Roller blind pull cord; 12. Second pull cord upper fixing module; 13. Pull cord lower fixing module; 14. Lifting curtain fixing module; 15. Control module; 16. Upper fixing... 17. Fixed seat; 18. Pull rope pulley; 19. Guide wheel cover; 20. Flat screw; 21. Lower fixed seat; 22. Inner groove part; 23. I-shaped fastening part; 24. I-shaped rib part; 25. Open type fastening part; 26. Arc-shaped groove; 27. Wire guide port; 28. Cylindrical pin; 29. ​​Support lug; 30. Balance fixing rod; 31. Lifting beam rod; 32. Fixing screw; 33. Pull rope tensioning seat; 34. Guide wheel seat; 35. Arc-shaped guide groove. Detailed Implementation

[0031] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention. Example 1

[0032] Please refer to Figure 1-11 .

[0033] This embodiment provides a blackout roller blind, including a first curtain assembly 2 that can move the first blackout curtain 1 from top to bottom. The first curtain assembly 2 is a traditional manual curtain, such as a manual Roman blind, or an electric roller blind, such as an electric skylight blind. This is prior art and will not be described in detail here.

[0034] In the embodiments of this invention application, please refer to Figure 1 A second curtain assembly 4 is installed on the blackout roller blind, capable of moving the second sunshade 3 from bottom to top. The second curtain assembly 4 and the first curtain assembly 2 can provide independent sun shading. The first curtain assembly 2 operates on a downward trajectory, while the second curtain assembly 4, with its second sunshade 3, operates upward, thanks to an internal mechanism. The two curtain assemblies can operate synchronously or independently to achieve different sun shading effects.

[0035] Furthermore, the second curtain assembly 4 includes a curtain rotating module 5 as the main body, which is installed at the bottom of the entire curtain set. Side rail assemblies 6 are provided on both sides of the curtain rotating module 5, and the other end (topmost) of the side rail assembly 6 is fixedly connected to the first curtain assembly 2. The position of the second sunshade 3 is offset from the position of the first sunshade 1 (see...). Figure 1(The first sunshade curtain 1 is on the outside, and the second sunshade curtain 3 is on the inside) so they will not interfere with each other.

[0036] In the embodiments of this invention application, please refer to Figure 2 and Figure 3 The side rail assembly 6 includes a side rail 7, on which a pull cord assembly (which moves the second sunshade 3) is installed. The pull cord assembly includes a first pull cord fixing module 8, which fixes one end of the tension spring 9 to the guide of the roller blind pull cord 11.

[0037] Furthermore, a tension spring 9 is connected to the first pull rope fixing module 8, and the other end of the tension spring 9 is connected to a pull rope tensioner module 10. The function of the pull rope tensioner module 10 is to fix the other end of the tension spring 9, and after the roller blind pull rope 11 passes around it, it acts as a movable pulley.

[0038] Furthermore, the pull rope tensioner module 10 is connected to the second pull rope fixing module 12 through one end of the roller blind pull rope 11. The function of the second pull rope fixing module 12 is that the roller blind pull rope 11 passes around it and acts as a fixed pulley.

[0039] Furthermore, the pull rope tensioner module 10 is connected to the lower pull rope fixing module 13 through the other end of the roller blind pull rope 11. The function of the lower pull rope fixing module 13 is that the roller blind pull rope 11 passes around it and acts as a fixed pulley.

[0040] Furthermore, the lower fixing module 13 of the pull cord is connected to the lifting curtain fixing module 14 via the roller blind pull cord 11, and the lifting curtain fixing module 14 is fixedly connected to the lifting beam rod 30. The function of the lifting curtain fixing module 14 is to connect the roller blind pull cord 11 and fix it to the lifting beam rod 30, so as to realize the synchronous up and down movement of the roller blind pull cord 11 and the lifting beam rod 30 (second sunshade 3).

[0041] It should be noted that the fixing module 8 on the first pull rope and the fixing module 12 on the second pull rope have the same structure. This facilitates installation and reduces production costs.

[0042] In the embodiments of this invention application, please refer to Figure 4 The first pull cord fixing module 8 includes an upper fixing seat 16, on which a pull cord pulley 17, a guide wheel cover 18, and a flat screw 19 are sequentially fixed. The function of the upper fixing seat 16 is to serve as a carrier for the parts installed on it; the function of the pull cord pulley 17 is to guide the roller blind pull cord 11, ensuring quiet operation, noise reduction, and durability; the function of the guide wheel cover 18 is to cover the roller blind pull cord 11, preventing it from easily coming loose; the function of the flat screw 19 is to fix the pull cord pulley 17, ensuring precise positioning and meeting strength requirements.

[0043] In the embodiments of this invention application, please refer to Figure 5 The pull cord tensioner module 10 includes a pull cord tensioning seat 32, on which a pull cord pulley 17, a guide wheel cover 18, and a flat screw 19 are sequentially fixed. The function of the pull cord tensioner module 10 is to address the issue that when the blind pull cord 11 is wound on a conventional drive wheel, it tends to stack, causing the outer diameter of the stacked cord to increase and the speed of circumference increase to be out of sync with the roller tube. The pull cord tensioner module 10 plays a crucial role in solving this problem. It reciprocates on the side rail 7, ensuring the blind pull cord 11 remains taut. This module, composed of a tension spring 9, effectively eliminates the inconsistency in circumference caused by winding, keeping the sunshade curtain fabric in a pre-fixed state, maintaining its verticality and flatness.

[0044] In the embodiments of this invention application, please refer to Figure 6 and Figure 9 The lower fixing module 13 for the pull cord includes a lower fixing base 20, on which a pull cord pulley 17, a guide wheel cover 18, and a flat screw 19 are sequentially fixed. The lower fixing base 20 serves as a carrier for the parts mounted thereon. The pull cord pulley 17 guides the roller blind pull cord 11, ensuring quiet operation, reduced noise, and durability. The guide wheel cover 18 covers the roller blind pull cord 11, preventing it from detaching. The flat screw 19 secures the pull cord pulley 17, ensuring precise positioning and sufficient strength. The lower fixing base 20 is mounted on the side rail 7 using fixing screws 31. Please refer to [reference needed]. Figure 9 The lower fixed base 20 is provided with a guide wheel seat 33 for placing the pull rope pulley 17, and an arc-shaped guide groove 34 for guiding the roller blind pull rope 11.

[0045] In the embodiments of this invention application, please refer to Figure 8 , Figure 9 and Figure 10 The side rail 7 is provided with an inner groove 21, and the upper fixing seat 16 is provided with an I-shaped fastening part 22 that cooperates with and connects to the inner groove 21; the pull rope tensioning seat 32 is provided with an I-shaped fastening part 22 that cooperates with and connects to the inner groove 21. The inner groove 21 and the I-shaped fastening part 22 cooperate with each other and can move up and down along the side rail 7 without falling off; both the upper fixing seat 16 and the pull rope tensioning seat 32 are provided with I-shaped fastening parts 22, which can keep the two components on the same center line, and their function is to prevent the roller blind pull rope 11 from interfering with each other.

[0046] In the embodiments of this invention application, please refer to Figure 10The side rail 7 is provided with an I-beam rib 23. In this embodiment, the I-beam rib 23 is located next to the inner groove 21, and the two are not on the same center line, which allows the components installed on it to be staggered, so that the roller blind pull rope 11 can be staggered without interference. The lower fixing base 20 is provided with an open-type fastening part 24 that cooperates with and connects to the I-beam rib 23. The I-beam rib 23 and the open-type fastening part 24 cooperate with and connect to each other, and can move up and down along the side rail 7 without falling off.

[0047] In the embodiments of this invention application, please refer to Figure 7 The pull rope pulley 17 is provided with an arc-shaped groove 25, and the guide wheel cover 18 is provided with a guide wire opening 26. The function of the arc-shaped groove 25 and the guide wire opening 26 is to guide the roller blind pull rope 11 and extend the service life of the roller blind pull rope 11.

[0048] Furthermore, the upper fixing seat 16 is provided with a lug 28 for fixing the cylindrical pin 27. The function of the cylindrical pin 27 is to allow the tension spring 9 to hook onto the cylindrical pin 27 and connect the tension spring 9.

[0049] In the embodiments of this invention application, please refer to Figure 2 A balance rod 29 is fixedly connected to one end of the side rail assembly 6 near the first curtain assembly 2. The function of the balance rod 29 is to make the entire curtain frame more stable.

[0050] This embodiment provides a blackout roller blind, which is installed as follows: the first pull cord upper fixing module 8, the second pull cord upper fixing module 12, and the pull cord tensioner module 10 are installed in the inner groove 21 of the side rail 7, all three being on the same center line. The pull cord lower fixing module 13 is installed in the I-shaped fastening part 22 of the side rail 7, forming a misalignment with the previous three modules, thereby ensuring that the roller blind pull cord 11 will not interfere. A tension spring 9 is installed between the first pull cord upper fixing module 8 and the pull cord tensioner module 10, and the pull cord tensioner module 10 can move up and down (slide) along the side rail 7.

[0051] This embodiment provides a blackout roller blind. For normal use, please refer to... Figure 11 The winding scheme for the roller blind pull cord 11 is as follows: the starting point is the curtain rotation module 5 (specifically, the internal pull cord drive wheel, not shown in the figure) → the first pull cord upper fixing module 8 → the second pull cord upper fixing module 12 → the pull cord tensioner module 10 → the pull cord lower fixing module 13 → the end point is fixed on the lifting beam.

[0052] It should be noted that the blackout roller blind provided by this invention offers two shading methods: when the first curtain assembly 2 and the second curtain assembly 4 work together, they can achieve a complete blackout effect; when used alone, they can achieve a partial blackout effect. Furthermore, it can provide an intelligent solution and connect to a smart home system based on the control module 15.

[0053] The advantages of this invention are as follows: This novel structure adds an independent second curtain assembly 4 to the existing first curtain assembly 2. The first sunshade 1 of the first curtain assembly 2 runs from top to bottom, and the second sunshade 3 of the second curtain assembly 4 runs from bottom to top, providing double shading to prevent external light from entering the room and achieving a complete blackout effect.

[0054] In the description of this invention, it should be noted that the terms "vertical," "upper," "lower," "horizontal," 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 invention 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. Therefore, they should not be construed as limitations on this invention.

[0055] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0056] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A blackout roller blind, comprising a first curtain assembly (2) capable of moving a first blackout curtain (1) from top to bottom, characterized in that: A second curtain assembly (4) is provided on the blackout roller blind, which can move the second sunshade (3) from bottom to top. The second curtain assembly (4) is independent of the first curtain assembly (2). The second curtain assembly (4) includes a curtain rotating module (5) as the main body. Side rail assemblies (6) are provided on both sides of the curtain rotating module (5). The other end of the side rail assembly (6) is fixedly connected to the first curtain assembly (2).

2. The blackout roller blind according to claim 1, characterized in that: The side rail assembly (6) includes a side rail (7), on which a pull rope assembly is installed. The pull rope assembly includes a first pull rope upper fixing module (8), on which a tension spring (9) is connected. The other end of the tension spring (9) is connected to a pull rope tensioner module (10). The pull rope tensioner module (10) is connected to a second pull rope upper fixing module (12) through one end of the roller blind pull rope (11). The pull rope tensioner module (10) is connected to a pull rope lower fixing module (13) through the other end of the roller blind pull rope (11). The pull rope lower fixing module (13) is connected to a lifting curtain fixing module (14) through the roller blind pull rope (11). The lifting curtain fixing module (14) is fixedly connected to the lifting beam rod (30).

3. The blackout roller blind according to claim 2, characterized in that: The first pull rope fixing module (8) has the same structure as the second pull rope fixing module (12).

4. The blackout roller blind according to claim 2, characterized in that: The first rope fixing module (8) includes an upper fixing seat (16), on which a rope pulley (17), a guide wheel cover (18), and a flat screw (19) are fixedly connected in sequence; the rope tensioner module (10) includes a rope tensioning seat (32), on which a rope pulley (17), a guide wheel cover (18), and a flat screw (19) are fixedly connected in sequence.

5. The blackout roller blind according to claim 2, characterized in that: The lower fixing module (13) for the pull rope includes a lower fixing seat (20), which is sequentially fixedly connected to a pull rope pulley (17), a guide wheel cover (18), and a flat screw (19).

6. The blackout roller blind according to claim 4, characterized in that: The side rail (7) is provided with an inner groove (21), and the upper fixing seat (16) is provided with an I-shaped fastening part (22) that cooperates with and connects to the inner groove (21); the rope tensioning seat (32) is provided with an I-shaped fastening part (22) that cooperates with and connects to the inner groove (21).

7. The blackout roller blind according to claim 5, characterized in that: The side rail (7) is provided with an I-beam rib (23), which is located next to the inner groove (21). The lower fixing seat (20) is provided with an open-type fastening part (24) that cooperates with and connects to the I-beam rib (23).

8. The blackout roller blind according to claim 4, characterized in that: The pull rope pulley (17) is provided with an arc groove (25), and the guide wheel cover (18) is provided with a wire opening (26).

9. The blackout roller blind according to claim 4, characterized in that: The upper fixing seat (16) is provided with a lug (28) for fixing the cylindrical pin (27).

10. The blackout roller blind according to any one of claims 1-9, characterized in that: A balance rod (29) is fixedly connected to one end of the side rail assembly (6) near the first curtain assembly (2).

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