Curtain lining
By simplifying the design of the curtain blackout strip, and utilizing the sliding adjustment of the first and second strips and the adhesive layer to attach it to the window frame, the problem of existing blackout strips being complex and unsuitable for curtains without curtain rods is solved, achieving convenient assembly and wide applicability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG LEAFY WINDOWARE CO LTD
- Filing Date
- 2025-07-11
- Publication Date
- 2026-06-26
AI Technical Summary
Existing retractable blackout strips have complex structures, are inconvenient to use, and cannot be applied to curtains without curtain rods.
The first and second side strips are attached to the inner wall of the window frame through an adhesive layer. The length of the side strips is adjusted by sliding the first and second blackout plates against each other to adapt to the window frame size, simplifying the structure and making it suitable for various curtains.
It features a simple structure, easy assembly and use, reduced costs, and is suitable for various types of curtains.
Smart Images
Figure CN224413511U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of curtain technology, and in particular to a curtain blackout strip. Background Technology
[0002] After curtains are assembled into the corresponding window frames, gaps usually remain between the top and side edges of the curtains and the corresponding edges of the window frame, allowing light to pass through. To improve light-blocking performance, blackout strips are needed to cover these gaps. Furthermore, to accommodate varying internal dimensions of different window frames, manufacturers have introduced retractable blackout strips that can be adjusted within a certain range. Combined with various specifications, these strips effectively meet the light-blocking needs of window frames with different internal dimensions.
[0003] An existing retractable blackout strip includes a first telescopic strip and a positioning ring. A first fixing block is fixedly connected to the top of the first telescopic strip, and a rotating shaft is disposed inside the first fixing block. The positioning ring is disposed on the outer wall of the rotating shaft, and a second fixing block is fixedly connected to the end of the positioning ring. A fixing screw is threadedly connected to the inside of the second fixing block, and a nut is threadedly connected to the outer wall of the fixing screw. A return spring is fixed to the top inner wall of the first telescopic strip, and a second telescopic strip is connected to the bottom end of the return spring. The second telescopic strip is disposed inside the first telescopic strip, and a base is fixed to the bottom outer wall of the second telescopic strip. In use, the diameter of the positioning ring is adjusted according to the thickness of the curtain rod. The fixing screw is then turned into the nut and tightened, causing the outer wall of the positioning ring to fit tightly against the outer wall of the curtain rod. The first telescopic strip is horizontal to the sides of the curtain, and the sides of the curtain are positioned behind the first telescopic strip, so that the front of the first telescopic strip covers the front of the curtain. The sides of the first telescopic strip block light from shining through the gap between the curtain and the wall, achieving a blackout effect without damaging the wall.
[0004] However, the inventors found during implementation that the existing retractable blackout strip structure was too complex and inconvenient to use. Moreover, it relied on a curtain rod for assembly and would not be applicable to curtains without a curtain rod. Utility Model Content
[0005] The technical problem to be solved by this utility model embodiment is to provide a curtain blackout strip that can effectively simplify the structure, facilitate assembly, and be applicable to various curtains.
[0006] To solve the above-mentioned technical problems, the present utility model provides the following technical solution: a curtain blackout strip, comprising: a first strip, a second strip, and an adhesive layer; the first strip includes a first adhesive piece and a first blackout piece that intersects with the first adhesive piece at a predetermined non-zero angle and is integrally formed; the second strip includes a second adhesive piece and a second blackout piece that intersects with the second adhesive piece at a predetermined non-zero angle and is integrally formed; the first strip and the second strip are adjusted by the first blackout piece and the second blackout piece abutting against each other and sliding relative to each other in the length direction, and when the overall length is adjusted to match the length of the corresponding frame of the window frame, the adhesive layer adheres the first adhesive piece and the second adhesive piece to the inner wall of the frame.
[0007] Furthermore, the first light-shielding sheet is formed by bending and extending from one side of the first adhesive sheet, and the second light-shielding sheet is formed by bending and extending from one side of the second adhesive sheet.
[0008] Furthermore, the second edge strip is stacked inside the first edge strip, and the second light-shielding sheet abuts against the first light-shielding sheet while the second adhesive sheet abuts against the first adhesive sheet.
[0009] Furthermore, the first edge strip is provided with a first sliding joint extending along the length direction of the first edge strip, and the second edge strip is provided with a corresponding second sliding joint extending along the length direction of the second edge strip. The first edge strip and the second edge strip are slidably connected by the first sliding joint and the second sliding joint.
[0010] Further, the first sliding part is a constricted groove with a groove opening width smaller than the groove inner width and open ends, and the second sliding part is a rib with a necked portion adapted to the cross-section of the constricted groove and adapted to the groove opening; or, the second sliding part is a constricted groove with a groove opening width smaller than the groove inner width and open ends, and the first sliding part is a rib with a necked portion adapted to the groove opening and adapted to the groove cross-section of the constricted groove.
[0011] Furthermore, the first sliding joint is located at the inner corner of the connection between the first light-shielding sheet and the first adhesive sheet, and the second sliding joint is located at the outer corner of the connection between the second light-shielding sheet and the second adhesive sheet.
[0012] Further, the adhesive layer includes a first adhesive layer attached to the outer surface of the first adhesive sheet and a second adhesive layer attached to the outer surface of the second adhesive sheet, wherein the thickness of the second adhesive layer is the sum of the thicknesses of the first adhesive layer and the first adhesive sheet; or, the adhesive layer includes a second adhesive layer attached to the outer surface of the second adhesive sheet and having a thickness adapted to the thickness of the first adhesive sheet, and a first adhesive layer correspondingly attached to the outer surfaces of the first adhesive sheet and the second adhesive layer.
[0013] Furthermore, the surface of the first light-shielding sheet facing away from the first adhesive sheet and the surface of the second light-shielding sheet facing away from the second adhesive sheet abut against each other to form a reference surface for relative sliding. The first adhesive sheet and the second adhesive sheet are respectively flush with each other on the outer surface of the inner sidewall of the frame. The adhesive layer includes a first adhesive layer attached to the outer surface of the first adhesive sheet and a second adhesive layer attached to the outer surface of the second adhesive sheet.
[0014] Furthermore, the interior of the first edge strip forms a slot that extends through the first edge strip along its length and has a groove on one side surface of the first adhesive piece for attaching to the frame. The slot has a first groove located inside the first light-shielding piece and a second groove located inside the first adhesive piece, communicating with the first groove and having the groove. The second edge strip is inserted into the slot, the second light-shielding piece is placed in the first groove, and the second adhesive piece is placed in the second groove with its outer surface exposed from the groove and flush with the outer surface of the first adhesive piece.
[0015] Furthermore, the first light-shielding sheet is connected to the middle of the first adhesive sheet and both extend in the same direction to form a T-shape. The second light-shielding sheet is connected to the middle of the second adhesive sheet and both extend in the same direction to form a T-shape. Alternatively, the second light-shielding sheet is bent and extended from one side of the second adhesive sheet. The interior of the first edge strip forms a slot that extends through the first edge strip along its length and has a groove on the side surface of the first adhesive sheet used for pasting to the frame. The slot has a first groove located inside the first light-shielding sheet and a second groove located inside the first adhesive sheet and connected to the first groove, and having the groove. The second edge strip is inserted into the slot. The second light-shielding sheet is placed in the first groove. The second adhesive sheet is placed in the second groove, and its outer surface is exposed from the groove and flush with the outer surface of the first adhesive sheet.
[0016] After adopting the above technical solution, the present utility model embodiment has at least the following beneficial effects: The present utility model embodiment uses a first side strip and a second side strip with relatively short lengths to cooperate with each other. The first light-shielding piece and the second light-shielding piece abut against each other and slide relative to each other in the length direction to adjust the overall length of the first side strip and the second side strip. When the overall length is adapted to the length of the corresponding frame of the window frame, the first adhesive piece and the second adhesive piece are then pasted to the inner side wall of the frame by the adhesive layer, thus completing the assembly of the light-shielding side strip. Not only is the overall structure simple, easy to manufacture, and low in cost, but it is also convenient to use and operate. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of the curtain blackout strip installed on the window frame in one optional embodiment of the present invention.
[0018] Figure 2 This is a schematic diagram of the structure of the first and second side strips interlocking in an optional embodiment of the curtain blackout side strip of this utility model.
[0019] Figure 3 This is a schematic diagram of the cross-sectional structure of the first side strip of an optional embodiment of the curtain blackout side strip of this utility model.
[0020] Figure 4 This is a schematic diagram of the cross-sectional structure of the first side strip of an optional embodiment of the curtain blackout side strip of this utility model.
[0021] Figure 5 This is a schematic cross-sectional view of a combined state of an optional embodiment of the curtain blackout strip of this utility model.
[0022] Figure 6 This is a partially enlarged schematic diagram of an optional embodiment of the curtain blackout strip of this utility model, showing it being pasted onto a window frame.
[0023] Figure 7 This is a cross-sectional structural diagram of another optional embodiment of the curtain blackout strip of this utility model.
[0024] Figure 8 This is a schematic diagram of the cross-sectional structure of another optional embodiment of the curtain blackout strip of this utility model.
[0025] Figure 9 This is a cross-sectional structural diagram of another optional embodiment of the curtain blackout strip of this utility model.
[0026] Figure 10 This is a cross-sectional structural diagram of another optional embodiment of the curtain blackout strip of this utility model. Detailed Implementation
[0027] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the following illustrative embodiments and descriptions are only used to explain the present invention and are not intended to limit the present invention. Moreover, the embodiments and features in the embodiments of the present invention can be combined with each other unless otherwise specified.
[0028] like Figures 1-10 As shown, an optional embodiment of this utility model provides a curtain blackout strip, including: a first strip 1, a second strip 3, and an adhesive layer 5. The first strip 1 includes a first adhesive piece 10 and a first blackout piece 12 that intersects with the first adhesive piece 10 at a predetermined non-zero angle and is integrally formed with it; the second strip 3 includes a second adhesive piece 30 and a second blackout piece 32 that intersects with the second adhesive piece 30 at a predetermined non-zero angle and is integrally formed with it; the overall length of the first strip 1 and the second strip 3 is adjusted by the first blackout piece 12 and the second blackout piece 32 abutting against each other and sliding relative to each other in the length direction; when the overall length is adjusted to match the length of the corresponding frame 70 of the window frame 7, the adhesive layer 5 adheres the first adhesive piece 10 and the second adhesive piece 30 to the inner wall of the frame 70.
[0029] This embodiment of the utility model uses a relatively short first side strip 1 and a second side strip 3 that cooperate with each other. The first light-blocking piece 12 and the second light-blocking piece 32 abut against each other and slide relative to each other in the length direction to adjust the overall length of the first side strip 1 and the second side strip 3. When the overall length matches the length of the corresponding frame of the window frame 7, the first adhesive piece 10 and the second adhesive piece 30 are then glued to the inner wall of the frame 70 by the adhesive layer 5, thus completing the assembly of the light-blocking side strips. This not only has a simple overall structure, is easy to manufacture, and has low cost, but is also convenient to use and operate. In specific implementations, double-sided tape or foam tape can be used as the adhesive layer 5. It is understood that, as Figure 1 As shown, the blackout strip is typically assembled between the opposite sides of the curtain 9 and the opposite sides of the vertical frame of the window frame 7. If necessary, it can also be installed between the top of the curtain 9 and the top edge of the window frame 7. The blackout strip provided in this embodiment is applicable to various curtains such as Venetian blinds, roller blinds, Roman blinds, and honeycomb blinds.
[0030] In one optional embodiment of this utility model, such as Figures 3 to 5As shown, the first light-shielding sheet 12 is formed by bending and extending from one side of the first adhesive sheet 10, and the second light-shielding sheet 32 is formed by bending and extending from one side of the second adhesive sheet 30. The first edge strip 1 and the second edge strip 3 provided in this embodiment both have a generally L-shaped cross-section, which facilitates manufacturing and allows them to be stacked for convenient transportation and use. In specific implementations, the first light-shielding sheet 12 and the first adhesive sheet 10, as well as the second light-shielding sheet 32 and the second adhesive sheet 30, are preferably designed to intersect perpendicularly. Of course, a non-perpendicular intersecting design is also feasible when necessary.
[0031] In another optional embodiment of this utility model, such as Figure 2 and Figure 5 As shown, the second edge strip 3 is stacked inside the first edge strip 1, and the second light-shielding sheet 32 abuts against the first light-shielding sheet 12 while the second adhesive sheet 30 abuts against the first adhesive sheet 10. This embodiment provides a specific combination method in which the first edge strip 1 and the second edge strip 3 cooperate to form a light-shielding edge strip. By directly stacking the second edge strip 3 inside the first edge strip 1, and with the second light-shielding sheet 32 and the second adhesive sheet 30 abutting against the first light-shielding sheet 12 and the first adhesive sheet 10 respectively, it can play an effective guiding role when sliding relative to each other. The structure is simple and convenient to operate when assembling and adjusting.
[0032] In another optional embodiment of this utility model, such as Figures 3 to 5 As shown, the first edge strip 1 is provided with a first sliding portion 14 extending along the length direction of the first edge strip 1, and the second edge strip 3 is correspondingly provided with a second sliding portion 34 extending along the length direction of the second edge strip 3. The first edge strip 1 and the second edge strip 3 are slidably connected by the first sliding portion 14 and the second sliding portion 34. This embodiment also provides better guidance for the relative sliding of the first edge strip 1 and the second edge strip 3 by setting mutually cooperating first sliding portions 14 and second sliding portions 34. In specific implementation, the first sliding portion 14 can be a groove with open ends, and the second sliding portion 34 is a rib slidably placed in the groove. Alternatively, the positions of the groove and the rib can be interchanged.
[0033] In another optional embodiment of this utility model, such as Figures 3 to 5As shown, the first sliding part 14 is a constricted groove with a groove opening width smaller than the groove inner width and open ends. The second sliding part 34 is a rib with a necked portion adapted to the cross-section of the constricted groove. Alternatively, the second sliding part 34 is a constricted groove with a groove opening width smaller than the groove inner width and open ends. The first sliding part 14 is a rib with a necked portion adapted to the cross-section of the constricted groove. This embodiment provides two specific structures for the first sliding part 14 and the second sliding part 34. Through the sliding engagement of the constricted groove and the rib with the necked portion, not only can the relative sliding of the first side strip 1 and the second side strip 3 in the length direction be realized, but also, through the engagement of the groove opening and the necked portion, the rib can be prevented from falling out through the groove opening, thereby effectively ensuring that the first side strip 1 and the second side strip 3 will not loosen from each other. As for forming openings at opposite ends of the constriction groove, this facilitates the sliding of the rib from either end of the constriction groove for adjustment of the overall length, for example... Figure 1 As shown, the light-blocking strip on the left extends from the lower end of the first strip 1 with the second strip 3, while the light-blocking strip on the right extends from the upper end of the first strip 1 with the second strip 3. In addition, this design also makes it convenient to insert a second strip 3 (or first strip 1) with a rib at each end of the first strip 1 (or second strip 3) with a constriction groove when the length of the corresponding frame inside the window frame 5 is relatively large. By connecting them in this way, a sufficient overall length can be obtained to match the length of the frame 70, so that the first strip 1 and the second strip 3 do not need to be designed to be too long, which is convenient for transportation.
[0034] In another optional embodiment of this utility model, such as Figures 3 to 5 As shown, the first sliding joint 14 is located at the inner corner of the connection between the first light-shielding sheet 12 and the first adhesive sheet 10, and the second sliding joint 34 is located at the outer corner of the connection between the second light-shielding sheet 32 and the second adhesive sheet 30. This embodiment, by providing the first sliding joint 14 and the second sliding joint 34 at the inner corner of the connection between the first light-shielding sheet 12 and the first adhesive sheet 10, and at the outer corner of the connection between the second light-shielding sheet 32 and the second adhesive sheet 30, respectively, effectively utilizes the relatively thick nature of these connection areas to ensure sufficient structural strength for the sliding connection of the first sliding joint 14 and the second sliding joint 34.
[0035] In another optional embodiment of this utility model, such as Figure 6As shown, the adhesive layer 5 includes a first adhesive layer 50 attached to the outer surface of the first adhesive sheet 10 and a second adhesive layer 52 attached to the outer surface of the second adhesive sheet 30. The thickness of the second adhesive layer 52 is the sum of the thicknesses of the first adhesive layer 50 and the first adhesive sheet 10. Alternatively, as... Figure 4 As shown, the adhesive layer 5 includes a second adhesive layer 52 attached to the outer surface of the second adhesive piece 30 with a thickness adapted to the thickness of the first adhesive piece 10, and a first adhesive layer 50 correspondingly attached to the outer surfaces of the first adhesive piece 10 and the second adhesive layer 52. This embodiment provides two structural designs for the adhesive layer 5, allowing for flexible selection during specific implementation. Both designs can effectively attach the first adhesive piece 10 and the second adhesive piece 30 to the corresponding frame 70.
[0036] In another optional embodiment of this utility model, such as Figure 7 As shown, the surface of the first light-shielding sheet 12 facing away from the first adhesive sheet 10 and the surface of the second light-shielding sheet 32 facing away from the second adhesive sheet 30 abut against each other to form a relative sliding reference surface. The first adhesive sheet 10 and the second adhesive sheet 32 are respectively flush with each other on the outer surface of the inner sidewall of the frame 70. The adhesive layer 5 includes a first adhesive layer 50 attached to the outer surface of the first adhesive sheet 10 and a second adhesive layer 52 attached to the outer surface of the second adhesive sheet 32. In this embodiment, the first adhesive sheet 10 and the second adhesive sheet 30 are on opposite sides of the reference surface. After being attached to the frame 70, the structure has better stability. When the first light-shielding sheet 12 and / or the second light-shielding sheet 32 are pushed by external force, they are not easy to loosen. Moreover, the structures of the first edge strip 1 and the second edge strip 3 can be completely identical, thereby facilitating manufacturing and reducing costs.
[0037] In another optional embodiment of this utility model, such as Figure 8As shown, the interior of the first edge strip 1 forms a slot 16 that extends through the first edge strip 1 along its length and has a groove on one side surface of the first adhesive piece 10 for attaching to the frame. The slot 16 has a first groove 160 located inside the first light-shielding sheet 12 and a second groove 162 located inside the first adhesive piece 10, communicating with the first groove 160 and having the groove. The second edge strip 3 is inserted into the slot 16, the second light-shielding sheet 32 is placed inside the first groove 160, and the second adhesive piece 30 is placed inside the second groove 162 with its outer surface exposed from the groove and flush with the outer surface of the first adhesive piece 10. In this embodiment, a slot 16 is formed inside the first side strip 1, in which a groove is opened on one side surface of the first adhesive piece 10 for pasting to the frame. This facilitates the insertion of the second side strip 3 into the slot 16 and enables relative sliding adjustment of the first side strip 1 and the second side strip 3. The second adhesive piece 30 is exposed from the groove of the second groove 162 and is flush with the outer surface of the first adhesive piece 10. It also facilitates the pasting operation using the adhesive layer 5.
[0038] In another optional embodiment of this utility model, the first light-shielding sheet 12 is connected to the middle of the first adhesive sheet 10 and both extend in the same direction, forming an overall T-shape; the second light-shielding sheet 32 is connected to the middle of the second adhesive sheet 30 and both extend in the same direction, forming an overall T-shape (e.g., Figure 9 (As shown) or the second light-shielding sheet 32 is formed by bending and extending from one side of the second adhesive sheet 30 (as shown). Figure 10As shown), the interior of the first edge strip 1 forms a slot 16 that extends through the first edge strip 1 along its length and has a groove on one side surface of the first adhesive piece 10 for attaching to the frame. The slot 16 has a first groove 160 located inside the first light-shielding sheet 12 and a second groove 162 located inside the first adhesive piece 10 and communicating with the first groove 160. The second edge strip is inserted into the slot 16, the second light-shielding sheet 32 is placed inside the first groove 160, and the second adhesive piece 30 is placed inside the second groove 162 with its outer surface exposed from the groove and flush with the outer surface of the first adhesive piece 10. In this embodiment, the first side strip 1 is designed as a T-shape, while the second side strip 3 can also be T-shaped or L-shaped, formed by bending and extending the second light-shielding sheet 32 from one side of the second adhesive sheet 30. A slot 16 is formed inside the first side strip 1, which facilitates the insertion of the second side strip 3 into the slot 16 and enables relative sliding adjustment of the first side strip 1 and the second side strip 3. The second adhesive sheet 30 is exposed from the slot 16 and its outer surface is flush with the outer surface of the first adhesive sheet 10, which facilitates the use of adhesive layer 5 for bonding. Moreover, the first side strip 1 is T-shaped, and the first light-shielding sheet 12 is connected to the middle of the first adhesive sheet 10, resulting in better structural stability. When the first light-shielding sheet 12 and / or the second light-shielding sheet 32 are pushed by external force, they are not easy to loosen.
[0039] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many variations under the guidance of the present invention without departing from the inventive spirit and scope of protection of the claims. These variations are all within the protection scope of the present invention.
Claims
1. A blackout border strip for curtains, comprising a first border strip and a second border strip, characterized in that, The first edge strip includes a first adhesive piece and a first light-blocking piece that intersects with the first adhesive piece at a predetermined non-zero angle and is integrally formed with it; the second edge strip includes a second adhesive piece and a second light-blocking piece that intersects with the second adhesive piece at a predetermined non-zero angle and is integrally formed with it; the first edge strip and the second edge strip are adjusted in length by the first light-blocking piece and the second light-blocking piece abutting against each other and sliding relative to each other in the length direction; the curtain light-blocking edge strip also includes an adhesive layer for attaching the first adhesive piece and the second adhesive piece to the inner wall of the frame when the overall length is adjusted to match the length of the corresponding frame of the window frame.
2. The blackout strip for curtains as described in claim 1, characterized in that, The first light-shielding sheet is formed by bending and extending from one side of the first adhesive sheet, and the second light-shielding sheet is formed by bending and extending from one side of the second adhesive sheet.
3. The blackout strip for curtains as described in claim 2, characterized in that, The second edge strip is stacked on the inside of the first edge strip, and the second light-shielding sheet abuts against the first light-shielding sheet while the second adhesive sheet abuts against the first adhesive sheet.
4. The blackout strip for curtains as described in claim 3, characterized in that, The first edge strip is provided with a first sliding joint extending along the length direction of the first edge strip, and the second edge strip is provided with a corresponding second sliding joint extending along the length direction of the second edge strip. The first edge strip and the second edge strip are slidably connected by the first sliding joint and the second sliding joint.
5. The blackout strip for curtains as described in claim 4, characterized in that, The first sliding joint is a constricted groove with a groove opening width smaller than the groove inner width and open ends. The second sliding joint is a rib with a necked portion that matches the cross-section of the constricted groove. Alternatively, the second sliding joint is a constricted groove with a groove opening width smaller than the groove inner width and open ends. The first sliding joint is a rib with a necked portion that matches the cross-section of the constricted groove.
6. The blackout strip for curtains as described in claim 4 or 5, characterized in that, The first sliding joint is located at the inner corner of the connection between the first light-shielding sheet and the first adhesive sheet, and the second sliding joint is located at the outer corner of the connection between the second light-shielding sheet and the second adhesive sheet.
7. The blackout strip for curtains as described in claim 3, characterized in that, The adhesive layer includes a first adhesive layer attached to the outer surface of the first adhesive sheet and a second adhesive layer attached to the outer surface of the second adhesive sheet, wherein the thickness of the second adhesive layer is the sum of the thicknesses of the first adhesive layer and the first adhesive sheet; or, the adhesive layer includes a second adhesive layer attached to the outer surface of the second adhesive sheet and having a thickness adapted to the thickness of the first adhesive sheet, and a first adhesive layer correspondingly attached to the outer surfaces of the first adhesive sheet and the second adhesive layer.
8. The blackout strip for curtains as described in claim 2, characterized in that, The first light-shielding sheet has its side surface facing away from the first adhesive sheet and the second light-shielding sheet have their side surface facing away from the second adhesive sheet abutting against each other to form a reference surface for relative sliding. The first adhesive sheet and the second adhesive sheet are respectively flush with each other facing the outer surface of the inner sidewall of the frame. The adhesive layer includes a first adhesive layer attached to the outer surface of the first adhesive sheet and a second adhesive layer attached to the outer surface of the second adhesive sheet.
9. The blackout strip for curtains as described in claim 2, characterized in that, The first edge strip has a slot formed inside, which extends through the first edge strip along its length and has a groove on the side surface of the first adhesive piece for attaching to the frame. The slot has a first groove located inside the first light-shielding piece and a second groove located inside the first adhesive piece, communicating with the first groove and having the groove. The second edge strip is inserted into the slot, the second light-shielding piece is placed in the first groove, and the second adhesive piece is placed in the second groove with its outer surface exposed from the groove and flush with the outer surface of the first adhesive piece.
10. The blackout strip for curtains as described in claim 1, characterized in that, The first light-shielding sheet is connected to the middle of the first adhesive sheet and both extend in the same direction, forming an overall T-shape. The second light-shielding sheet is connected to the middle of the second adhesive sheet and both extend in the same direction, forming an overall T-shape. Alternatively, the second light-shielding sheet is bent and extended from one side of the second adhesive sheet. The interior of the first edge strip forms a slot that extends through the first edge strip along its length and has a groove on the side surface of the first adhesive sheet used for pasting to the frame. The slot has a first groove located inside the first light-shielding sheet and a second groove located inside the first adhesive sheet, communicating with the first groove and having the groove opening. The second edge strip is inserted into the slot, the second light-shielding sheet is placed in the first groove, and the second adhesive sheet is placed in the second groove with its outer surface exposed from the groove opening and flush with the outer surface of the first adhesive sheet.