An adjustable length curtain track
Patent Information
- Application Number
- CN202521934080.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-09
- Publication Date
- 2026-09-22
- Estimated Expiration
- 2035-09-09
AI Technical Summary
[0005]为了克服现有技术的上述缺陷，本实用新型提供了一种可调节长度的窗帘轨道，以解决上述多段拼接安装困难、滑轮易卡顿甚至脱轨、长期使用后拼接处下垂变形等导致窗帘运行不平稳和影响美观的问题
1.本实用新型通过主轨道与两侧伸缩副轨道的滑动配合，实现轨道长度在较大范围内的无级调节，无需定制或拼接即可适配不同窗宽，简化安装流程、缩短周期，并降低运输与物流成本。
Smart Images
Figure CN224776520U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of curtain track technology, and in particular to an adjustable length curtain track. Background Technology
[0002] Curtain tracks are key accessories used to hang curtains, enable curtain opening and closing, and enhance the decorative effect of fabrics. They are divided into two main series: visible tracks (such as wooden, aluminum alloy, steel pipe, wrought iron, and PVC rods) and concealed tracks (such as nano tracks, aluminum alloy tracks, and silent tracks). Their materials include PVC, iron, copper, wood, and aluminum alloy.
[0003] However, due to the large differences in window sizes, commercially available curtain tracks are still mainly of uniform specifications, which cannot fully cover various non-standard window widths. If a custom-made approach is adopted, professional personnel need to come to the site to measure and produce them individually, which is not only cumbersome and time-consuming, but also significantly increases logistics costs due to the limited volume and weight of extra-long tracks during transportation, handling and delivery.
[0004] To overcome the problem of mismatched lengths, existing technology usually uses two tracks spliced together. However, ordinary consumers lack professional installation skills, and misalignment, gaps, or height differences are prone to occur at the splice, causing the pulleys to jam or even derail when passing through. After long-term use, the spliced area will sag and deform due to concentrated stress, thus affecting the stability of the curtains' operation and overall aesthetics. Utility Model Content
[0005] In order to overcome the above-mentioned defects of the prior art, this utility model provides an adjustable length curtain track to solve the problems of difficult installation of multi-segment splicing, easy jamming or even derailment of pulleys, and sagging and deformation of splicing points after long-term use, which lead to unstable operation of curtains and affect their appearance.
[0006] This utility model provides an adjustable length curtain track, including an installation strip and a main track disposed at the lower end of the installation strip. Telescopic auxiliary tracks are slidably connected to both sides of the main track. A pre-drilled hole is provided at one adjacent end of each telescopic auxiliary track, located on the front and rear end faces of the telescopic auxiliary track. Slide rails are symmetrically fixedly connected to the front and rear ends of the inner wall of the main track, passing through the pre-drilled holes. Wheel grooves are symmetrically provided on the front and rear ends of the lower end face of the inner wall of the telescopic auxiliary track. A pulley assembly is disposed inside the telescopic auxiliary track.
[0007] Preferably, the pulley assembly includes a fixed frame and a support frame. The fixed frame is disposed within the telescopic auxiliary track. The left and right sides of the fixed frame are respectively fixedly connected to symmetrically arranged rotating shafts. The sidewalls of the rotating shafts are rotatably connected to a first roller, which is located in a groove and rolls with it. The support frame is fixedly connected to the upper end of the fixed frame. The support frame is symmetrically connected to rotating shafts. The sidewalls of the rotating shafts are rotatably connected to a second roller, which is located above the slide rail and rolls with it. The lower end of the fixed frame is fixedly connected to a suspension rod.
[0008] Preferably, the main track has symmetrically arranged limiting grooves on both the front and back of its lower end. The limiting grooves are located below the slide rail and have the same length. The lower end of the telescopic sub-track on the adjacent side is fixedly connected to a slider, which is located inside the limiting groove and slidably connected to it.
[0009] Preferably, the upper end face of the mounting strip is provided with mounting holes and threaded holes at equal intervals, the mounting holes and threaded holes are arranged alternately, and the upper end of the main track is symmetrically fixedly connected with limit strips at the front and rear. The mounting strip is located between a pair of limit strips above the main track and is slidably connected to them.
[0010] Preferably, the upper end of the telescopic auxiliary track located outside the main track is symmetrically fixedly connected with limit blocks. The two sides of the mounting strip are located inside the limit blocks and are slidably connected to them. The upper end face of the telescopic auxiliary track is provided with through holes at equal intervals. The upper end face of the main track is provided with mounting holes at equal intervals. Nuts are fixedly connected to the upper end of the main track at equal intervals. The nuts are coaxial with the mounting holes. Bolts are provided inside the through holes. The bolts pass through the mounting holes, nuts and threaded holes in sequence, and are threadedly connected to the nuts and threaded holes.
[0011] Preferably, both the main track and the telescopic auxiliary track are made of aluminum alloy.
[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model achieves stepless adjustment of the track length within a wide range by sliding the main track with the telescopic auxiliary tracks on both sides. It can adapt to different window widths without customization or splicing, simplifying the installation process, shortening the cycle, and reducing transportation and logistics costs.
[0013] 2. This utility model uses four sets of complementary limiting structures—slide rail-reserved hole, limiting groove-slider, limiting strip-installation strip, and limiting block-installation strip—in conjunction with a double roller pulley assembly to ensure that the extension and sliding processes always maintain coaxiality, height, and direction, avoiding misalignment, jamming, derailment, and sagging deformation, thus ensuring that the curtains operate smoothly, quietly, and beautifully over a long period of time. Attached Figure Description
[0014] Figure 1This is a schematic diagram of the overall main structure of this utility model; Figure 2 This is a schematic diagram of the overall left-side planar structure of this utility model; Figure 3 This is a schematic diagram of the main track, telescopic secondary track, and pulley assembly of this utility model from a front view cross section. Figure 4 This is a cross-sectional exploded view of the main track and telescopic auxiliary track of this utility model.
[0015] Numbering on the map: 1. Mounting strip; 11. Fixing hole; 12. Threaded hole; 2. Main rail; 21. Limiting strip; 22. Slide rail; 23. Mounting hole; 24. Nut; 25. Limiting groove; 3. Telescopic auxiliary rail; 31. Limiting block; 32. Wheel groove; 33. Through hole; 34. Reserved hole; 35. Sliding block; 4. Pulley assembly; 41. Fixing frame; 42. First roller; 43. Support frame; 44. Second roller; 45. Suspension rod; 5. Bolt. Detailed Implementation
[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0017] like Figure 1-4 As shown, this utility model has the following two specific embodiments.
[0018] Example 1 A surveying support device includes an installation strip 1 and a main track 2 disposed at the lower end of the installation strip 1. Telescopic secondary tracks 3 are slidably connected to both sides inside the main track 2. A reserved hole 34 is opened at an adjacent end of the telescopic secondary track 3. The reserved hole 34 is located on the front and rear end faces of the telescopic secondary track 3. A slide rail 22 is symmetrically fixedly connected to each of the front and rear ends of the inner wall of the main track 2. The slide rail 22 passes through the reserved hole 34. Wheel grooves 32 are symmetrically opened at the front and rear ends of the lower end face of the inner wall of the telescopic secondary track 3. A pulley assembly 4 is disposed inside the telescopic secondary track 3. The pulley assembly 4 includes a fixed frame 41 and a support frame 43. The fixed frame 41 is set inside the telescopic auxiliary track 3. The left and right sides of the fixed frame 41 are respectively fixedly connected to symmetrical rotating shafts. The side wall of the rotating shaft is rotatably connected to a first roller 42. The first roller 42 is located in the wheel groove 32 and rolls with it. The support frame 43 is fixedly connected to the upper end of the fixed frame 41. The support frame 43 is symmetrically fixedly connected to rotating shafts. The side wall of the rotating shaft is rotatably connected to a second roller 44. The second roller 44 is located above the slide rail 22 and rolls with it. The lower end of the fixed frame 41 is fixedly connected to a suspension rod 45.
[0019] In this embodiment, as Figures 1-3 As shown, first fix the installation strip 1 horizontally to the top of the window, then pull the two side rails to extend them outward along the slide rail 22 until the required total length. At this time, the lower hanging rod 45 unfolds as the rail moves outward. After the curtain ring is inserted through the hanging rod 45, when the curtain moves horizontally, the first roller 42 rolls in the wheel groove 32 and the second roller 44 rolls on the slide rail 22. The two wheels work together to keep the rail stable and slide quietly. The limiting structure and the slider 35 work together to prevent the rail from sagging or misaligning, thus completing the adjustable length opening and closing without jamming.
[0020] Example 2 The difference from Embodiment 1 is that this embodiment discloses the installation method of the main track 2, the telescopic auxiliary track 3, and the mounting strip 1; The main track 2 has symmetrical limit grooves 25 on the front and back of the lower end of the main track 2. The limit grooves 25 are located below the slide rail 22 and have the same length. The lower end of the telescopic sub-track 3 on the adjacent side is fixedly connected to a slider 35. The slider 35 is located inside the limit groove 25 and is slidably connected to it. Mounting strip 1 has mounting holes 23 and threaded holes 12 equidistantly spaced on its upper end face. The mounting holes 23 and threaded holes 12 are arranged alternately. Limiting strips 21 are symmetrically fixedly connected to the front and rear ends of the upper end of the main track 2. Mounting strip 1 is located between a pair of limiting strips 21 above the main track 2 and is slidably connected to them. The telescopic auxiliary track 3 located outside the main track 2 is symmetrically fixedly connected to the front and rear of the upper end of the telescopic auxiliary track 3. The two sides of the mounting strip 1 are located inside the limiting block 31 and are slidably connected to it. The upper end face of the telescopic auxiliary track 3 is provided with through holes 33 at equal intervals. The upper end face of the main track 2 is provided with mounting holes 23 at equal intervals. Nuts 24 are fixedly connected to the upper end of the main track 2 at equal intervals. Nuts 24 are coaxial with mounting holes 23. Bolts 5 are provided inside the through holes 33. Bolts 5 pass through mounting holes 23, nuts 24 and threaded holes 12 in sequence, and are threadedly connected to nuts 24 and threaded holes 12. Both the main track 2 and the telescopic auxiliary track 3 are made of aluminum alloy.
[0021] In this embodiment, as Figure 1 , Figures 3-4As shown, first, the mounting strip 1 is fixed to the top of the window by passing the expansion bolt 5 through the mounting hole 23. Then, the main track 2 is slid horizontally along the limiting strip 21 into the middle position below the mounting strip 1. Then, the two sliding rail sections are inserted from both ends of the main track 2, so that the slider 35 is simultaneously inserted into the limiting groove 25 to form a double guide at the top and bottom. After pulling the rail to the required length according to the width of the window opening, the bolt 5 is passed through the through hole 33, the mounting hole 23, and the nut 24 in sequence and screwed into the threaded hole 12 to complete the locking. At the same time, the limiting block 31 and the limiting strip 21 keep the rail and the mounting strip 1 coaxial. The aluminum alloy material ensures that the whole is lightweight, corrosion-resistant and does not deform over a long period of time.
[0022] The working principle of this utility model is as follows: The mounting strip 1 is first fixed to the top of the window. The main track 2 is horizontally slidable to the mounting strip 1 through the limiting strip 21 and is centered. The telescopic sub-track 3 forms a four-point guide with the slider 35, the limiting groove 25, the reserved hole 34 and the slide rail 22, which can be smoothly pulled outward or retracted to change the overall length. The first roller 42 in the pulley assembly 4 rolls along the wheel groove 32 and the second roller 44 rolls along the slide rail 22 to achieve low friction and quiet sliding. After the length is adjusted to the right position, the bolt 5 passes through the through hole 33, the mounting hole 23 and the nut 24 in sequence and is screwed into the threaded hole 12 to lock the telescopic sub-track 3, the main track 2 and the mounting strip 1 into one, preventing slippage and sagging, and ensuring that the curtain always opens and closes smoothly along a horizontal straight line.
[0023] Although the disclosure is as stated above, the scope of protection of this disclosure is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this disclosure, and all such changes and modifications will fall within the protection scope of this utility model.
Claims
1. An adjustable length curtain track, comprising a mounting strip (1) and a main track (2) disposed at the lower end of the mounting strip (1), characterized in that, The main track (2) has telescopic secondary tracks (3) slidably connected to both sides inside. A reserved hole (34) is opened at one end of the telescopic secondary track (3). The reserved hole (34) is located on the front and rear end faces of the telescopic secondary track (3). A slide rail (22) is symmetrically fixedly connected to the front and rear ends of the inner wall of the main track (2). The slide rail (22) passes through the reserved hole (34). Wheel grooves (32) are symmetrically opened at the front and rear ends of the lower end face of the inner wall of the telescopic secondary track (3). A pulley assembly (4) is provided inside the telescopic secondary track (3).
2. The adjustable-length curtain track according to claim 1, characterized in that, The pulley assembly (4) includes a fixed frame (41) and a support frame (43). The fixed frame (41) is set in the telescopic sub-track (3). The left and right sides of the fixed frame (41) are respectively fixedly connected to symmetrical rotating shafts. The side wall of the rotating shaft is rotatably connected to a first roller (42). The first roller (42) is located in the wheel groove (32) and rolls with it. The support frame (43) is fixedly connected to the upper end of the fixed frame (41). The support frame (43) is symmetrically connected to rotating shafts. The side wall of the rotating shaft is rotatably connected to a second roller (44). The second roller (44) is located above the slide rail (22) and rolls with it. The lower end of the fixed frame (41) is fixedly connected to a suspension rod (45).
3. The adjustable-length curtain track according to claim 1, characterized in that, The main track (2) has symmetrically arranged limiting grooves (25) on the front and back of the lower end of the inner side. The limiting grooves (25) are located below the slide rail (22) and have the same length. The lower end of the telescopic sub-track (3) on the adjacent side is fixedly connected to a slider (35). The slider (35) is located inside the limiting groove (25) and is slidably connected to it.
4. The adjustable-length curtain track according to claim 1, characterized in that, The mounting strip (1) has mounting holes (23) and threaded holes (12) equidistantly spaced on its upper surface. The mounting holes (23) and threaded holes (12) are arranged alternately. Limiting strips (21) are symmetrically fixedly connected to the front and rear of the upper end of the main track (2). The mounting strip (1) is located between a pair of limiting strips (21) above the main track (2) and is slidably connected to them.
5. The adjustable-length curtain track according to claim 1, characterized in that, A limiting block (31) is symmetrically fixedly connected to the upper end of the telescopic sub-track (3) located outside the main track (2). The two sides of the mounting strip (1) are located inside the limiting block (31) and are slidably connected to it. Through holes (33) are opened at equal intervals on the upper end surface of the telescopic sub-track (3). Mounting holes (23) are opened at equal intervals on the upper end surface of the main track (2). Nuts (24) are fixedly connected at equal intervals on the upper end of the main track (2). The nuts (24) are coaxial with the mounting holes (23). Bolts (5) are provided inside the through holes (33). The bolts (5) pass through the mounting holes (23), nuts (24) and threaded holes (12) in sequence, and are threadedly connected to the nuts (24) and threaded holes (12).
6. The adjustable-length curtain track according to claim 1, characterized in that, Both the main track (2) and the telescopic auxiliary track (3) are made of aluminum alloy.