A telescopic adjustable curtain rail and a rope winding method

Abstract

The present invention discloses a telescopic adjustable curtain rail and a rope winding method, which includes a first curtain rail, a second curtain rail and an annular belt. During installation, customers can, according to their actual needs, adjust the length of the annular belt in the overlapping part of the first rail and the second rail, thereby adjusting the overlapping length of the two parts of the first rail and the second rail, so that the overall length of the first rail and the second rail can be adjusted as needed. A first adapter is installed at one end of the second rail. By installing a first guide wheel and a second guide wheel in the first adapter, and through the annular belt wound around the driving wheel, the first reversing wheel, the first guide wheel, the second reversing wheel, the second guide wheel and the driving wheel in sequence, the power connection between the first rail and the second rail is realized, enabling the first rail and the second rail to move synchronously, reducing the volume of the curtain, and optimizing the structure of the curtain rail and the curtain rope winding method. This invention is used in the technical field of curtain rails.

Description

Technical Field

[0001] The present invention relates to the technical field of curtain rails, and particularly to a telescopic adjustable curtain rail and a rope winding method. Background Art

[0002] At present, the widths of the walls with windows in various rooms are different. Therefore, the production and installation method of curtain machines is to first measure the width of the window wall, and then manufacture the curtain machine in the workshop according to the width dimension. The defects of this method are as follows: First, on-site measurement is required, which wastes manpower. If the measurement or manufacture is incorrect, rework is necessary, wasting working hours and materials. Second, this method can only be customized for single machines, with low efficiency and high costs. Moreover, due to single-machine customization, mass production cannot be carried out. Once the length of the curtain rail is determined in this manufacturing method, it can only be used for the corresponding window. Once the window size changes due to reasons such as decoration, the curtain rail of the original size cannot be used continuously or adjusted, resulting in waste.

[0003] CN2516065Y discloses an electrically adjustable curtain rail, which consists of a main rail, a secondary rail, a traction pulley, a hanging ring, a connecting pulley, a traction rope, a passive pulley, a passive bracket, a side-mounted power drive head, a central guide wheel, a central guide wheel bracket, and a bracket positioning rope. This electrically adjustable curtain rail uses a connecting slider to horizontally juxtapose the main and secondary rails into one body, enabling the use length of the entire track system to be adjusted arbitrarily. However, the setting and structural design of the central guide wheel and the central guide wheel bracket of this electrically adjustable curtain rail result in a relatively large overall volume of the curtain structure, and the traction rope needs to change the transmission direction through the central guide wheel twice, with poor synchronization performance between the main and secondary rails, prone to failures, and the installation and disassembly of the traction pulley of this curtain rail are very inconvenient. Summary of the Invention

[0004] The purpose of the present invention is to provide a telescopic adjustable curtain rail with adjustable length and small volume and a rope winding method.

[0005] The technical solution adopted by the present invention is as follows:

[0006] A telescopic adjustable curtain rail, which includes:

[0007] A first rail, with a driving wheel and a first reversing wheel respectively installed at both ends thereof, and a first chute is arranged on one side surface of the first rail along its length direction;

[0008] A second rail, arranged in parallel with the first rail side by side, one side surface of the second rail is in contact with the outer end surface of the first chute, and the first rail and the second rail can slide relative to each other along the length direction;

[0009] At the end of the second guide rail located on the first guide rail, a first adapter is installed. At the other end of the second guide rail, a second reversing wheel is installed. Inside the first adapter, a first guide wheel and a second guide wheel are installed.

[0010] The endless belt is wound around the driving wheel, the first reversing wheel, the first guide wheel, the second reversing wheel, the second guide wheel, and the driving wheel in sequence.

[0011] Further as an improvement of the technical solution of the present invention, the second guide wheel is located above and outside the first guide wheel.

[0012] Further as an improvement of the technical solution of the present invention, the distance from the center of the first guide wheel to the first guide rail is less than the distance from the center of the second guide wheel to the first guide rail.

[0013] Further as an improvement of the technical solution of the present invention, a first pressing wheel is provided above the endless belt wound out from the first guide wheel.

[0014] Further as an improvement of the technical solution of the present invention, a second pressing wheel and a third pressing wheel are respectively arranged on the outer sides of the endless belt wound into and out from the second guide wheel, and the third pressing wheel is tangent to the top end of the first guide rail.

[0015] Further as an improvement of the technical solution of the present invention, a first trolley mechanism and a second trolley mechanism are respectively arranged on the first guide rail and the second guide rail. At the bottoms of the first guide rail and the second guide rail, a first opening and a second opening are respectively arranged along the length directions of the first guide rail and the second guide rail. The first trolley mechanism extends out from the first opening, and the second trolley mechanism extends out from the second opening. The endless belt is in an open shape, and both ends of the opening of the endless belt are respectively fixed on both sides of the first trolley mechanism. The second trolley mechanism is detachably fixed on the endless belt.

[0016] Further as an improvement of the technical solution of the present invention, the first trolley mechanism includes a trolley main body, an opening structure A, and an opening structure B. The opening structure A and the opening structure B are fixedly connected to the trolley main body by screws, and both ends of the endless belt are respectively fixed to the opening structure A and the opening structure B.

[0017] Further as an improvement of the technical solution of the present invention, the second trolley mechanism includes a groove structure and a pressing block structure. The groove structure includes a groove part located inside the second guide rail and a fixing part extending out from the second opening. The pressing block structure includes an engaging part located inside the groove part and a pressing plate extending out from the second opening. The endless belt is installed between the groove part and the engaging part, and the engaging part meshes with the endless belt. The pressing plate is fixed to the fixing part by screws; by tightening or loosening the screws, the endless belt is fixed to or released from the engaging part.

[0018] Further as an improvement of the technical solution of the present invention, it further includes a cover plate, which is installed on the outer side of the annular belt exposed between the first adapter and the driving wheel, and the cover plate is fixed on the first guide rail.

[0019] Further as an improvement of the technical solution of the present invention, the annular belt is a synchronous belt.

[0020] A rope winding method for a telescopic adjustable curtain guide rail, fixing the starting end of the annular belt in the opening of the first pulley mechanism, the annular belt extends along the length direction of the first guide rail to the first reversing wheel, turns into the first chute after passing through the first reversing wheel, and then turns into the second guide rail through the first guide wheel, and extends along the length direction of the second guide rail to the second reversing wheel, reverses along the length direction of the second guide rail and enters the first guide rail through the second guide wheel, and then passes through the driving wheel to reverse, and fixes the tail end of the annular belt in the other opening of the first pulley mechanism.

[0021] The beneficial effects of the present invention: A telescopic adjustable curtain guide rail and a rope winding method, which include a first guide rail, a second guide rail and an annular belt. During installation, the customer can, according to their actual needs, adjust the length of the annular belt in the overlapping part of the first guide rail and the second guide rail, so as to adjust the overlapping length of the two parts of the first guide rail and the second guide rail, enabling the overall length of the first guide rail and the second guide rail to be adjusted as needed. Install a first adapter at one end of the second guide rail, and through the first guide wheel and the second guide wheel installed in the first adapter, and by sequentially winding the annular belt around the driving wheel, the first reversing wheel, the first guide wheel, the second reversing wheel, the second guide wheel and the driving wheel, realize the power connection between the first guide rail and the second guide rail, make the first guide rail and the second guide rail move synchronously, reduce the volume of the curtain, and optimize the structure of the curtain guide rail and the curtain rope winding method. Description of the Drawings

[0022] The present invention will be further described below with reference to the accompanying drawings:

[0023] Figure 1 It is a cross-sectional view of the overall structure of the embodiment of the present invention;

[0024] Figure 2 It is an embodiment of the present invention Figure 1 Side view;

[0025] Figure 3 It is a schematic diagram of the loosening of the screws of the second pulley mechanism of the embodiment of the present invention;

[0026] Figure 4 It is a schematic diagram of the tightening of the screws of the second pulley mechanism of the embodiment of the present invention;

[0027] Figure 5 It is a schematic diagram of the second pulley mechanism of the embodiment of the present invention.

[0028] Wherein:

[0029] The first guide rail 1, the first chute 11, the driving wheel 12, the first reversing wheel 13, the first opening 14, the first driving head 15, the second adapter 16, the second chute 17, the first groove 18;

[0030] The second guide rail 2, the first adapter 21, the second reversing wheel 22, the first guide wheel 23, the second guide wheel 24, the second opening 25, the second driving head 26, the second chute 27, the second groove 28;

[0031] The endless belt 3;

[0032] The second pulley mechanism 4; the groove structure 41, the pressing block structure 42, the screw 43;

[0033] The groove portion 411, the fixing portion 412;

[0034] The engaging portion 421, the pressing plate 422;

[0035] The first pressing wheel 5a, the second pressing wheel 5b, the third pressing wheel 5c;

[0036] The first pulley mechanism 6. Detailed implementation manners

[0037] This part will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the drawings. The function of the drawings is to supplement the description of the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it should not be construed as a limitation on the protection scope of the present invention.

[0038] In the description of the present invention, it should be understood that for the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present invention.

[0039] In the description of the present invention, the meaning of several is one or more, the meaning of multiple is more than two, greater than, less than, exceeding, etc. are understood as not including the present number, above, below, within, etc. are understood as including the present number. If the first and second are described only for the purpose of distinguishing technical features, they should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0040] In the description of the present invention, unless otherwise clearly defined, terms such as "setting", "installation", "connection", etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution.

[0041] Referring to Figures 1 - 5 , the present invention provides a specific embodiment of a telescopic adjustable curtain rail, which includes a first rail 1, a second rail 2, an endless belt 3, a first pulley mechanism 6, and a second pulley mechanism 4. When installing this curtain rail, the customer can, according to their actual needs, adjust the length of the endless belt 3 in the overlapping part of the first rail 1 and the second rail 2, thereby adjusting the overlapping length of the two parts of the first rail 1 and the second rail 2, enabling the overall length of the first rail 1 and the second rail 2 to be adjusted as needed. The adjustment is simple and convenient, and the size is not customized, with very high applicability and performance.

[0042] Among them, referring to the attached Figure 2 , the second rail 2 and the first rail 1 are arranged side by side and parallel. A first chute 11 is provided on one side of the first rail 1, and the second rail 2 is in contact with the end face of the first chute 11 of the first rail 1, and a closed space is formed between the first chute 11 and the side of the second rail 2. As Figure 1 , a first drive head 15 and a second adapter 16 are respectively installed at both ends of the first rail 1. A driving wheel 12 is installed in the first drive head 15, and a first reversing wheel 13 is installed in the second adapter 16.

[0043] It can be understood that the first rail 1 and the second rail 2 can slide along their length directions. A first adapter 21 is installed at the end of the second rail 2 located on the first rail 1, and a second drive head 26 is installed at the other end of the second rail 2. A second reversing wheel 22 is installed in the second drive head 26.

[0044] Referring to the attached Figure 1 , a first guide wheel 23 and a second guide wheel 24 are installed in the first adapter 21. The first guide wheel 23 is located between the second guide wheel 24 and the second reversing wheel 22, and the second guide wheel 23 is located outside and above the first guide wheel 24.

[0045] Specifically, the external common tangent of the first guide wheel 23 and the second guide wheel 24 is inclined with respect to the first rail 1. The second adapter 16 and the first adapter 21 are directly inserted into the ends of the first rail 1 and the second rail 2. Compared with the prior art in the background art, the first guide wheel 23 and the second guide wheel 24 are located at the end of the second rail 2. By installing the first adapter 21 at the end of the second rail 2, the thickness of the rail is reduced, effectively reducing the volume of the curtain.

[0046] It can be understood that, referring to the attached Figure 1, the connection line between the lower end of the first guide wheel 23 and the upper end of the first reversing wheel 13 is parallel to the first guide rail 1, ensuring that the endless belt 3 wound into the first guide wheel 23 from the first chute 11 can be wound into the first guide wheel 23 tangentially from the bottom end. The upper end of the first guide wheel 23 is lower than the upper end of the second guide rail 2, which can ensure that the endless belt 3 turning from the second reversing wheel 22 into the second guide rail 2 will not interfere with the first guide wheel 23.

[0047] As Figure 1 , the first guide wheel 23 and the first reversing wheel 13 are respectively located on both sides of the endless belt 3, and the second guide wheel 24 and the second reversing wheel 22 are respectively located on the same side of the endless belt 3. Compared with the electric curtain guide rail in the background art, the number of times the endless belt 3 changes direction is reduced, which can improve the synchronization of the movement of the first guide rail 1 and the second guide rail 2 and reduce the failure rate of the curtain. The distance from the center of the first guide wheel 23 to the first guide rail 1 is less than the distance from the center of the second guide wheel 24 to the first guide rail 1, so that the first guide wheel 23 and the second guide wheel 24 are arranged in an inclined and staggered manner, enabling the endless belt 3 to connect the first guide rail 1 and the second guide rail 2 and realizing the telescopic movement of the curtain guide rail.

[0048] In a specific embodiment, a first pressing wheel 5a is arranged on the outer side of the endless belt 3 wound out from the first guide wheel 23. The first pressing wheel 5a presses the endless belt 3 after turning by the first guide wheel 23 downward, ensuring that the endless belt 3 can be wound into the first reversing wheel 13 from the lower end of the second guide rail 2.

[0049] Referring to the attached Figure 1 , second pressing wheels 5b and third pressing wheels 5c are respectively arranged on the outer sides of the endless belt 3 wound into and out from the second guide wheel 24. The third pressing wheel 5c is located on the outer side of the endless belt 3 between the driving wheel 12 and the second guide wheel 24, and the second pressing wheel 5b is located on the outer side of the endless belt 3 between the second guide wheel 24 and the second reversing wheel 22. The lower end of the third pressing wheel 5c is tangent to the top end of the first guide rail 1, which can prevent the endless belt 3 from contacting the first guide rail 1 and damaging the endless belt 3.

[0050] It can be understood that, as Figure 1 , when the first guide rail 1 and the second guide rail 2 are stretched, the first chute 11 of the first guide rail 1 is staggered from the second guide rail 2, resulting in the direct exposure of the endless belt 3 on the outside. This is likely to cause the endless belt 3 to be contaminated with dust, etc., reducing the lifespan of the endless belt 3. Moreover, on the other hand, directly exposing the endless belt 3 in this way greatly reduces the overall aesthetic degree of the appearance.

[0051] Therefore, in the actual use process, it can be considered to use a thin aluminum plate as the cover plate. After the first guide rail 1 and the second guide rail 2 are stretched to both sides, according to the length of the exposed first chute 11, the length of the required thin aluminum plate is cut, and then the thin aluminum plate is directly fixed on the first guide rail 1, which can effectively prevent dust, improve the service life of the endless belt 3 and the appearance consistency of the curtain system.

[0052] Refer to the appendix Figure 2 In this embodiment, first grooves 18 and second grooves 28 are respectively provided at the tops of the first guide rail 1 and the second guide rail 2. Specifically, one end of the second adapter 16 is inserted into the end of the first guide rail 1, and a slide rail matching with the first groove 18 is provided inside the top of the second adapter 16. The slide rail of the second adapter 16 cooperates with the first groove 18 to fasten the first guide rail 1 and the second guide rail 2 together. Similarly, a slide rail matching with the second groove 28 is provided inside the top of the first adapter 21. The first guide rail 1 and the second guide rail 2 are fastened together by the second adapter 16 and the first adapter 21, and the first guide rail 1 and the second guide rail 2 are closely combined, which can effectively guarantee the performance of the endless belt 3 and each transmission wheel inside the first guide rail 1 and the second guide rail 2.

[0053] In this embodiment, the endless belt 3 can be selected as a synchronous belt. The endless belt 3 is wound around the driving wheel 12, the first reversing wheel 13, the first guide wheel 23, the second reversing wheel 22, and the second guide wheel 24 in sequence. It can be understood that the minimum distance between the first guide wheel 23 and the second guide wheel 24 is greater than the cross-sectional width of the endless belt 3, which can accommodate the endless belt 3 to pass through. By driving the driving wheel 12 to rotate, the endless belt 3 is driven to move, thereby driving the first guide rail 1 and the second guide rail 2 to move towards or away from each other, so as to shorten or stretch the overall length of the guide rail.

[0054] Refer to the appendix Figure 2 In this embodiment, first openings 14 and second openings 25 are respectively provided at the bottoms of the first guide rail 1 and the second guide rail 2 along the length directions of the first guide rail 1 and the second guide rail 2. First trolley mechanisms 6 and second trolley mechanisms 4 are respectively provided on the first guide rail 1 and the second guide rail 2. The first trolley mechanism 6 extends out from the first opening 14, and the second trolley mechanism 4 extends out from the second opening 25. The endless belt 3 is in an open shape, and both ends of the opening of the endless belt 3 are respectively fixed on both sides of the first trolley mechanism 6, and a closed endless belt is formed through the first trolley mechanism 6 to drive the first guide rail 1 and the second guide rail 2 to lengthen or shorten, and the second trolley mechanism 4 is detachably fixed on the endless belt 3.

[0055] Among them, the first trolley mechanism 6 includes a trolley main body, an opening structure A, and an opening structure B. The opening structure A and the opening structure B are fixedly connected to the trolley main body by screws, and both ends of the endless belt 3 are respectively fixed to the opening structure A and the opening structure B.

[0056] The working process of this curtain rail is as follows. When the motor connected to the first driving head 15 rotates, it drives the driving wheel 12 to rotate, and the annular belt 3 wound around the driving wheel 12 moves. The first trolley mechanism 6 and the second trolley mechanism 4 on the first rail 1 and the second rail 2 are fixed to the annular belt 3 and move with the annular belt 3. The first trolley mechanism 6 and the second trolley mechanism 4 will move towards each other at the same speed synchronously, so that the curtain can complete the closing or opening action. The distances between the first trolley mechanism 6 and the second trolley mechanism 4 and the two ends of the first rail 1 and the second rail 2 can be adjusted according to actual needs and then fixed.

[0057] Specifically, referring to the attached Figure 3 , the second trolley mechanism 4 includes a groove structure 41 and a pressing block structure 42. The groove structure 41 includes a groove portion 411 located inside the second rail 2 and a fixing portion 412 extending from the second opening 25. The groove of the groove portion 411 is arranged towards the center of the second rail 2, and the whole groove portion 411 is located inside the rail on one side of the second opening 25. The pressing block structure 42 includes an engaging portion 421 located inside the groove portion 411 and a pressing plate 422 extending from the second opening 25. The annular belt 3 is installed between the groove portion 411 and the engaging portion 421, and the engaging portion 421 meshes with the annular belt 3. The pressing plate 422 is fixed to the fixing portion 412 by screws 43. By tightening or loosening the screws 43, the annular belt 3 is fixed to or released from the engaging portion 421. Using the screws 43 to directly fix the groove structure 41 and the pressing block structure 42 is very convenient for disassembly and assembly.

[0058] The second trolley mechanism 4 meshes with the annular belt 3 through the engaging portion 421, and then the pressing plate 422 and the fixing portion 412 are fixed by screws 43. When the distance between the first trolley mechanism 6 and the second trolley mechanism 4 of the curtain does not meet the requirements, the screws 43 can be loosened to release the pressing plate 422 and the fixing portion 412, and the annular belt 3 is disengaged from the engaging portion 421. At this time, the second trolley mechanism 4 can be pushed to slide to adjust the distance of the second trolley mechanism 4 to the required position. When the distance of the second trolley mechanism 4 is adjusted, the screws 43 are tightened, and the annular belt 3 meshes and locks with the engaging portion 421. The installation and adjustment of the second trolley mechanism 4 are very convenient. Compared with the prior art, the distance between the first trolley mechanism 6 and the second trolley mechanism 4 can be freely adjusted, which is beneficial to the installation of the curtain.

[0059] Referring to the attached Figure 2 , Figure 3 , Figure 4, on the inner sides of the tops of the first guide rail 1 and the second guide rail 2, second chutes 17 and 27 are provided. On the tops of the first pulley mechanism 6 and the second pulley mechanism 4, bumps are provided which cooperate with the second chutes 17 and 27, and the bumps can slide along the second chutes 17 and 27. On both sides of the groove structure 41 and the pressing block structure 42 extending from the first opening 14 and the second opening 25, a third chute and a fourth chute are respectively provided. The bottom thicknesses of the first guide rail 1 and the second guide rail 2 are smaller than the opening sizes of the third chute and the fourth chute.

[0060] A method for winding a rope of a telescopic and adjustable curtain guide rail. The winding sequence of the entire annular belt 3 is as follows: Fix the starting end of the annular belt 3 in the opening of the first pulley mechanism 6. The annular belt 3 goes from the lower end of the first guide rail 1 to the first reversing wheel 13 of the second adapter 16, enters the first chute 11 through the first reversing wheel 13, then turns through the first guide wheel 23 and enters the lower end of the second guide rail 2, and goes along the lower end of the second guide rail 2 to the second reversing wheel 22 located at the second driving head 26. After being reversed by the second reversing wheel 22, it goes along the upper end of the second guide rail 2. Fix the second pulley mechanism 4 on the annular belt 3 in this section. The annular belt 3 enters the first guide rail 1 through the second guide wheel 24, and then is reversed by the driving wheel 12. The tail end of the annular belt 3 is fixed in the other opening of the first pulley mechanism 6. When the annular belt 3 enters the second guide rail 2 from the first guide wheel 23 and enters the first guide rail 1 from the second guide wheel 24, only one change of direction needs to be achieved, which greatly saves the structural space of the curtain.

[0061] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the knowledge scope of those of ordinary skill in the art in the said technical field, various changes can be made without departing from the gist of the present invention.

Claims

1. A telescopic and adjustable curtain rail, characterized in that, Comprising: A first guide rail, with a driving wheel and a first reversing wheel respectively installed at both ends of the first guide rail. There is a first chute arranged along the length direction on one side of the first guide rail; A second guide rail, arranged in parallel side by side with the first guide rail. One side of the second guide rail is in contact with the outer end face of the first chute. The first guide rail and the second guide rail can slide relatively along the length direction; A first adapter is installed at the end of the second guide rail located on the first guide rail. A second reversing wheel is installed at the other end of the second guide rail. A first guide wheel and a second guide wheel are installed in the first adapter; An endless belt, wound around the driving wheel, the first reversing wheel, the first guide wheel, the second reversing wheel, the second guide wheel and the driving wheel in sequence; A cover plate, installed on the outer side of the endless belt exposed between the first adapter and the driving wheel. The cover plate is fixed on the first guide rail; A first trolley mechanism and a second trolley mechanism are respectively arranged on the first guide rail and the second guide rail. There are a first opening and a second opening respectively arranged along the length directions of the first guide rail and the second guide rail at the bottoms of the first guide rail and the second guide rail. The first trolley mechanism extends out from the first opening, and the second trolley mechanism extends out from the second opening.

2. The telescopic and adjustable curtain rail according to claim 1, wherein: The second guide wheel is located above and outside the first guide wheel.

3. The retractable and adjustable curtain rail according to claim 2, wherein: The distance from the center of the first guide wheel to the first guide rail is less than the distance from the center of the second guide wheel to the first guide rail.

4. The retractable and adjustable curtain rail according to claim 3, characterized in that: There is a first pressing wheel above the endless belt wound out from the first guide wheel.

5. The retractable and adjustable curtain rail according to claim 3, wherein: A second pressing wheel and a third pressing wheel are respectively arranged on the outer sides of the endless belt wound into and out from the second guide wheel. The third pressing wheel is tangent to the top end of the first guide rail.

6. The retractable and adjustable curtain rail according to any one of claims 1-5, characterized in that: The endless belt is in an open shape. The two ends of the opening of the endless belt are respectively fixed on both sides of the first trolley mechanism. The second trolley mechanism is detachably fixed on the endless belt.

7. The telescopic and adjustable curtain rail according to claim 6, characterized in that: The first trolley mechanism includes a trolley main body, an opening structure A and an opening structure B. The opening structure A and the opening structure B are fixedly connected to the trolley main body by screws. The two ends of the endless belt are respectively fixed to the opening structure A and the opening structure B.

8. The retractable and adjustable curtain rail according to claim 6, characterized in that: The second trolley mechanism includes a groove structure and a pressing block structure. The groove structure includes a groove part located inside the second guide rail and a fixing part extending out from the second opening. The pressing block structure includes an engaging part located inside the groove part and a pressing plate extending out from the second opening. The endless belt is installed between the groove part and the engaging part. The engaging part meshes with the endless belt. The pressing plate is fixed to the fixing part by screws; by tightening or loosening the screws, the endless belt is fixed to or released from the engaging part.

9. A method for winding a rope of a telescopically adjustable curtain rail, characterized in that, For the curtain guide rail as described in any one of claims 1 to 8, fix the starting end of the endless belt in the opening of the first trolley mechanism. The endless belt winds along the length direction of the first guide rail to the first reversing wheel, turns through the first reversing wheel and enters the first chute, then turns through the first guide wheel and enters the second guide rail, and winds along the length direction of the second guide rail to the second reversing wheel, changes direction along the length direction of the second guide rail and enters the first guide rail through the second guide wheel, and then changes direction through the driving wheel. The tail end of the endless belt is fixed in the other opening of the first trolley mechanism.

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