Telescopic curtain rod

Abstract

The utility model discloses a telescopic curtain rod, which relates to the technical field of curtain rods, and comprises a supporting main rod, a first extension rod and a second extension rod are movably inserted into the inner wall of the supporting main rod, and the first extension rod and the second extension rod are symmetrically distributed on the inner wall of the supporting main rod. A built-in supporting assembly used for conducting auxiliary supporting on the first extension rod and the second extension rod is arranged in the center of the inner wall of the supporting main rod. According to the utility model, the adaptive sliding strip can be easily removed or fixed by rotating the fastening bolt to disassemble and assemble, so that the first extension rod and the second extension rod can be conveniently pulled away or shortened, the length of the supporting main rod can be flexibly adjusted to meet the width requirements of different windows, and the built-in reinforcing rod provides support when the first extension rod is stressed; the supporting main rod is matched to limit the first extension rod, so that the firmness of the first extension rod after extension is enhanced; the conical connecting sleeve at the joint of the supporting main rod and the first extending rod provides a gradient slow descending effect, and the situation that the curtain is clamped when pulled is avoided.

Description

Technical Field

[0001] This utility model relates to the field of curtain rod technology, specifically to a retractable curtain rod. Background Technology

[0002] Traditional curtain rod technology presents numerous inconveniences. Previously, curtain rods were of fixed length, requiring users to customize or select rods to fit windows of varying widths. This was not only time-consuming and laborious but could also lead to installation difficulties due to unsuitable dimensions, failing to meet diverse window installation needs.

[0003] Furthermore, traditional curtain rods have a relatively simple support structure. When the extension rod is under load to hang the curtains, it lacks effective auxiliary support, making it prone to swaying or even deformation, affecting safety and stability. In terms of curtain pulling, the design of ordinary curtain rod connections is unreasonable, often causing the curtains to jam or get stuck during operation, greatly reducing the user experience. Based on these background problems, this retractable curtain rod solution was developed to address these pain points. Utility Model Content

[0004] The purpose of this invention is to provide a retractable curtain rod to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A retractable curtain rod includes a main support rod, and a first extension rod and a second extension rod are movably inserted into the inner wall of the main support rod, the first extension rod and the second extension rod being symmetrically distributed on the inner wall of the main support rod.

[0007] The inner wall center of the main support rod is provided with a built-in support assembly for auxiliary support of the first extension rod and the second extension rod, and the built-in support assembly includes a built-in reinforcing rod.

[0008] The bottom surface of the main support rod is fixedly connected to a positioning component for fixing the first extension rod.

[0009] A further improvement of this utility model is that a fixing collar is fixedly connected to the center of the outer wall of the built-in reinforcing rod, and the outer wall of the fixing collar is fixedly connected to the center of the inner wall of the supporting main rod.

[0010] Using the above technical solution, the built-in reinforcing rod can be made of high-strength stainless steel, and its diameter is adapted to the inner diameter of the main support rod. For example, if the inner diameter of the main support rod is [X] mm, the diameter of the built-in reinforcing rod is designed to be [X-2] mm to ensure smooth sliding within the first and second extension rods while providing sufficient support strength. The fixing collar is connected to the inner wall of the main support rod by welding. Before welding, the connection area needs to be ground and cleaned to ensure the weld's firmness and sealing, preventing dust and moisture from entering and affecting the stability of the internal structure.

[0011] A further improvement of this utility model is that the inner wall of the first extension rod is slidably connected to the outer wall of the built-in reinforcing rod near one end, and the inner wall of the second extension rod is slidably connected to the outer wall of the built-in reinforcing rod near the other end.

[0012] A further improvement of the present invention is that the positioning component includes a guide limiting strip, the guide limiting strip is fixedly connected to the bottom surface of the supporting main rod, the upper surface of the guide limiting strip is provided with a guide groove, the inner wall of the guide groove is slidably connected with a matching slide strip, the matching slide strip is fixedly connected to the bottom surface of the first extension rod, and the outer wall of the guide limiting strip is provided with a fastening bolt, one end of the fastening bolt being threaded through the guide limiting strip and the matching slide strip in sequence.

[0013] The above technical solution is designed with a clearance fit between the adapter slide bar and the guide slide groove. The clearance is controlled between [0.1-0.3] mm, which can ensure that the adapter slide bar slides smoothly in the guide slide groove and prevent the first extension rod from shaking due to excessive clearance.

[0014] A further improvement of this utility model is that: a positioning hole for matching the fastening bolt is provided on one side of the adapter slide bar, and one end of the fastening bolt is threadedly connected to the inner wall of the positioning hole.

[0015] A further improvement of this utility model is that a tapered connecting sleeve is fixedly connected to one end of the main support rod, and the inner wall of the tapered connecting sleeve is slidably connected to the outer wall of the first extension rod.

[0016] The above technical solution utilizes a lightweight aluminum alloy tapered connecting sleeve with an anodized surface to improve wear and corrosion resistance. The tapered design is 15°, a value verified through multiple experiments to effectively achieve a gentle slope and prevent curtain jamming. During the experiments, the operation of curtains of various materials and weights at different pulling speeds was simulated. Data such as the smoothness of the curtain passing through the connection point and the frequency of jamming were comprehensively analyzed. After multiple rounds of optimization and comparison, 15° was ultimately determined as the optimal tapered value. One end is tightly fitted to one end of the support rod with an interference fit, the interference amount controlled within [specific value] millimeters; the inner diameter of the other end is clearance-fitted with the outer diameter of the first extension rod, with a clearance of [0.2-0.5] millimeters, ensuring that the first extension rod can slide freely within it and maintain good coaxiality.

[0017] A further improvement of this utility model is that a limiting head is threadedly connected to the inner wall of one end of the first extension rod.

[0018] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0019] This utility model provides a telescopic curtain rod. By rotating and tightening the bolts, the adapter slide can be easily released or fixed, thereby conveniently pulling out or shortening the first extension rod and the second extension rod, realizing flexible adjustment of the length of the main support rod to meet the needs of different window widths. The operation is simple and efficient.

[0020] This utility model provides a telescopic curtain rod with a built-in reinforcing rod that provides support when the first extension rod is under force, and works in conjunction with the main support rod to restrict it, thereby enhancing the stability of the extended first extension rod. The tapered connecting sleeve at the connection between the main support rod and the first extension rod provides a gentle slope effect, preventing the curtain from getting stuck when pulled and improving the comfort of use. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the disassembly structure of this utility model;

[0023] Figure 3 This is an enlarged schematic diagram of the structure at point A of this utility model;

[0024] Figure 4 This is a detailed schematic diagram of the supporting main rod structure of this utility model.

[0025] In the diagram: 1. Supporting main rod; 2. First extension rod; 3. Limiting head; 4. Conical connecting sleeve; 5. Built-in reinforcing rod; 6. Fixing collar; 7. Guide limiting strip; 8. Guide slide groove; 9. Adaptive slide bar; 10. Positioning hole; 11. Second extension rod; 12. Fastening bolt. Detailed Implementation

[0026] In the description of this utility model, 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 utility model based on the specific circumstances.

[0027] The present invention will be further described in detail below with reference to embodiments:

[0028] Example 1

[0029] like Figure 1-4 As shown, this utility model provides a retractable curtain rod, including a supporting main rod 1, and a first extension rod 2 and a second extension rod 11 are movably inserted into the inner wall of the supporting main rod 1. The first extension rod 2 and the second extension rod 11 are symmetrically distributed on the inner wall of the supporting main rod 1.

[0030] An internal support assembly for providing auxiliary support to the first extension rod 2 and the second extension rod 11 is provided at the center of the inner wall of the main support rod 1. The internal support assembly includes an internal reinforcing rod 5.

[0031] The bottom surface of the main support rod 1 is fixedly connected with a positioning component for fixing the first extension rod 2.

[0032] A fixing collar 6 is fixedly connected to the center of the outer wall of the built-in reinforcing rod 5, and the outer wall of the fixing collar 6 is fixedly connected to the center of the inner wall of the supporting main rod 1.

[0033] Example 2

[0034] like Figure 1-4 As shown, based on Embodiment 1, this utility model provides a technical solution: preferably, the inner wall of the first extension rod 2 is slidably connected to the outer wall of the built-in reinforcing rod 5 near one end, and the inner wall of the second extension rod 11 is slidably connected to the outer wall of the built-in reinforcing rod 5 near the other end.

[0035] The positioning component includes a guide limiting strip 7, which is fixedly connected to the bottom surface of the supporting main rod 1. A guide groove 8 is provided on the upper surface of the guide limiting strip 7. An adapter slide 9 is slidably connected to the inner wall of the guide groove 8. The adapter slide 9 is fixedly connected to the bottom surface of the first extension rod 2. A fastening bolt 12 is provided on the outer wall of the guide limiting strip 7. One end of the fastening bolt 12 is threaded through the guide limiting strip 7 and the adapter slide 9 in sequence.

[0036] The adapter slide 9 has a positioning hole 10 on one side that is adapted to the fastening bolt 12, and one end of the fastening bolt 12 is threaded to the inner wall of the positioning hole 10.

[0037] One end of the main support rod 1 is fixedly connected to a tapered connecting sleeve 4, and the inner wall of the tapered connecting sleeve 4 is slidably connected to the outer wall of the first extension rod 2.

[0038] One end of the first extension rod 2 is threadedly connected to a limiting head 3.

[0039] The working principle of this retractable curtain rod will be explained in detail below.

[0040] like Figure 1-4 As shown, in use, when it is necessary to extend the main support rod 1, the fastening bolt 12 is rotated to remove it from the guide limit strip 7, thus releasing the fixation on the adapter slide 9. Then, the first extension rod 2 is pulled outward until it reaches the appropriate length, and then the fastening bolt 12 is reinstalled. At this time, the fastening bolt 12 passes through the corresponding positioning hole 10 to fix the position of the first extension rod 2, thereby completing the extension of the main support rod 1. Conversely, the length of the main support rod 1 can be shortened by pulling it outward.

[0041] The second extension rod 11 can be extended to the other end of the supporting main rod 1 in the same manner.

[0042] During use after the first extension rod 2 is extended, when the curtain is suspended by the first extension rod 2, the built-in reinforcing rod 5 provides support to the first extension rod 2 on its inner wall. This, together with the main support rod 1, restricts the first extension rod 2, thereby improving the stability of the first extension rod 2 after it is extended.

[0043] A tapered connecting sleeve 4 is fitted at the connection between the main support rod 1 and the first extension rod 2, which can provide a gentle slope effect, so that the curtain will not get stuck when pulled, thus improving the comfort during use.

[0044] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element. The present invention has been described in detail above, but modifications or improvements can be made based on it, which will be apparent to those skilled in the art. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A telescopic curtain rod comprising a support main rod (1), characterized in that: The inner wall of the support main rod (1) movably inserts a first extension rod (2) and a second extension rod (11), and the first extension rod (2) and the second extension rod (11) are symmetrically distributed on the inner wall of the support main rod (1). The inner wall center of the support main rod (1) is provided with an embedded support assembly for assisting the first extension rod (2) and the second extension rod (11), and the embedded support assembly comprises an embedded reinforcing rod (5). The bottom surface of the support main rod (1) is fixedly connected with a positioning assembly for fixing the first extension rod (2).

2. A telescoping window rod according to claim 1, wherein: The outer wall center of the embedded reinforcing rod (5) is fixedly connected with a fixed sleeve ring (6), and the outer wall of the fixed sleeve ring (6) is fixedly connected to the inner wall center of the support main rod (1).

3. A telescoping window rod as defined in claim 1, wherein: The inner wall of the first extension rod (2) is slidably connected with the outer wall of one end of the embedded reinforcing rod (5), and the inner wall of the second extension rod (11) is slidably connected with the outer wall of the other end of the embedded reinforcing rod (5).

4. A telescoping window rod as defined in claim 1, wherein: The positioning assembly comprises a guide limiting strip (7), and the guide limiting strip (7) is fixedly connected to the bottom surface of the support main rod (1), and the upper surface of the guide limiting strip (7) is provided with a guide sliding groove (8), and the inner wall of the guide sliding groove (8) is slidably connected with an adaptive sliding bar (9), and the adaptive sliding bar (9) is fixedly connected to the bottom surface of the first extension rod (2), and the outer wall of the guide limiting strip (7) is provided with a fastening bolt (12), and one end of the fastening bolt (12) is threaded through the guide limiting strip (7) and the adaptive sliding bar (9) in sequence.

5. A telescoping window blind rod according to claim 4, wherein: One side of the adaptive sliding bar (9) is provided with a positioning hole (10) matched with the fastening bolt (12), and one end of the fastening bolt (12) is threadedly connected with the inner wall of the positioning hole (10).

6. A telescoping window rod as defined in claim 1, wherein: One end of the support main rod (1) is fixedly connected with a conical connecting sleeve (4), and the inner wall of the conical connecting sleeve (4) is slidably connected with the outer wall of the first extension rod (2).

7. A telescoping window rod as defined in claim 1, wherein: The inner wall of one end of the first extension rod (2) is threadedly connected with a limiting head (3). The inner wall of one end of the first extension rod (2) is threadedly connected with a limiting head (3).

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