Telescopic pole assembly

Abstract

This application relates to a telescopic rod assembly. The telescopic rod assembly includes a female support rod, a male support rod, a locking mechanism, and a clamping mechanism. The male support rod and the female support rod are slidably connected along a first direction; the locking mechanism is disposed between the male support rod and the female support rod to lock the male support rod and the female support rod; the clamping mechanism is disposed between the male support rod and the female support rod, and is located on one side of the locking mechanism along the first direction, with the outer wall of the clamping mechanism abutting against the inner wall of the female support rod, and the inner wall of the clamping mechanism abutting against the outer wall of the male support rod. Two contact points are provided between the female support rod and the male support rod to ensure that the axial directions of the male support rod and the female support rod always coincide, preventing the male support rod from swinging radially relative to the female support rod under the action of external force. At the same time, the clamping mechanism can also increase the friction between the female support rod and the male support rod, thereby improving the locking force of the female support rod and the male support rod.

Description

Technical Field

[0001] This application relates to the field of support structure technology, and in particular to telescopic rod assemblies. Background Technology

[0002] In existing technologies, retractable support structures are widely used in various fields such as building construction and mechanical equipment.

[0003] In related technologies, telescopic rod assemblies generally include a main strut and a secondary strut that can slide relative to each other. In actual use, the secondary strut is prone to radial swaying relative to the main strut under external forces, making it impossible to ensure that the two axial directions always coincide. This not only affects the stability and reliability of the support structure but may also cause safety hazards. Utility Model Content

[0004] Therefore, it is necessary to provide a telescopic rod assembly to address the problem that the secondary strut is prone to radial swaying relative to the primary strut under external force.

[0005] A telescopic pole assembly, the telescopic pole assembly comprising:

[0006] Mother strut;

[0007] The sub-support rod has one end inserted into the mother support rod and is slidably connected to the mother support rod along the first direction;

[0008] A locking mechanism is provided between the sub-support rod and the mother support rod for locking the sub-support rod and the mother support rod;

[0009] A clamping mechanism is disposed between the sub-support rod and the mother support rod, and is located on one side of the locking mechanism along the first direction. The outer wall of the clamping mechanism abuts against the inner wall of the mother support rod, and the inner wall of the clamping mechanism abuts against the outer wall of the sub-support rod.

[0010] In one embodiment, the locking mechanism includes a locking sleeve and a locking clamping block. The locking sleeve is fixed to the inner side of the female support rod, and the locking clamping block is sleeved on the outer side of the male support rod and can slide along the axial direction of the male support rod.

[0011] The locking sleeve is used to fit over the locking clamp, and the inner diameter of the locking sleeve and / or the outer diameter of the locking clamp gradually changes along the insertion direction of the sub-support rod, so that the locking sleeve and the locking clamp move radially relative to each other and press the sub-support rod.

[0012] In one embodiment, the outer diameter of the locking clamp and the inner diameter of the locking sleeve gradually decrease along the insertion direction;

[0013] The locking clamp is interference-fitted with the locking outer sleeve, and the locking clamp can retract radially inward.

[0014] In one embodiment, the locking clamp includes two clamping members that are radially opposite to and spaced apart along the sub-support rod. Each clamping member includes an arc-shaped inner wall and a plurality of clamping blocks disposed outside the arc-shaped inner wall. The plurality of clamping blocks are arranged sequentially at intervals along the circumference of the arc-shaped inner wall. And along the insertion direction, the outer wall of each clamping block is radially inward.

[0015] In one embodiment, a threaded connection section is provided at one end of the female support rod along the first direction;

[0016] The locking sleeve is threadedly connected to the threaded connection section.

[0017] The locking mechanism includes a clamping nut, which is sleeved on the outside of the sub-support rod. The clamping nut is located on the side of the locking clamp block opposite to the insertion direction, and the clamping nut is threadedly connected to the threaded connection section.

[0018] In one embodiment, the locking mechanism further includes a top cover with a through hole for the sub-support rod to pass through. The top cover covers the end of the female support rod with a threaded connection section, and the top cover is sealed to the sub-support rod.

[0019] In one embodiment, the clamping mechanism includes a clamping outer sleeve and a clamping inner sleeve. The clamping outer sleeve is fixed inside the female support rod, and the clamping inner sleeve is sleeved outside the male support rod. The clamping outer sleeve is sleeved outside the clamping inner sleeve, and the inner diameter of the clamping outer sleeve and / or the outer diameter of the clamping inner sleeve gradually changes along the insertion direction of the male support rod, so that the clamping outer sleeve and the clamping inner sleeve move radially relative to each other and clamp the male support rod.

[0020] In one embodiment, the clamping outer sleeve includes an internal thread segment and a clamping cavity arranged sequentially along the insertion direction;

[0021] The clamping inner sleeve includes an external thread section and a clamping block arranged sequentially along the insertion direction;

[0022] The internal thread section is threadedly connected to the external thread section, and the clamping block is used to be inserted into the clamping cavity so that the inner wall of the clamping cavity abuts against the outer wall of the clamping block.

[0023] In one embodiment, there are multiple clamping blocks arranged in a ring at intervals, and the outer wall of each clamping block is radially inward along the insertion direction.

[0024] In one embodiment, the inner diameter of the clamping cavity gradually decreases along the insertion direction.

[0025] In the aforementioned telescopic rod assembly, the clamping mechanism and locking mechanism are respectively disposed between the mother support rod and the child support rod, and are axially arranged, providing two contact points between the mother support rod and the child support rod. This ensures that the axial directions of the child support rod and the mother support rod always coincide, preventing the child support rod from swaying radially relative to the mother support rod under external force. Simultaneously, the clamping mechanism increases the friction between the mother support rod and the child support rod, thereby improving the locking force between them. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the telescopic rod assembly in one embodiment.

[0027] Figure 2 This is an exploded view of the telescopic rod assembly in one embodiment.

[0028] Figure 3 This is a schematic diagram of the locking mechanism in one embodiment.

[0029] Figure 4 This is a schematic diagram of the locking jacket structure in one embodiment.

[0030] Figure 5 This is a schematic diagram of the locking clamp block in one embodiment.

[0031] Figure 6 This is a schematic diagram of the clamping mechanism in one embodiment.

[0032] Figure 7 This is a schematic diagram of the structure for holding the coat in one embodiment.

[0033] Figure 8 This is a schematic diagram of the structure of the inner sleeve in one embodiment.

[0034] Figure 9 This is a schematic diagram of the structure of a sub-strut in one embodiment.

[0035] Reference numerals: 200, telescopic rod assembly; 210, female support rod; 211, threaded connection section; 220, female support rod; 221, limiting groove; 230, locking mechanism; 231, locking outer sleeve; 232, locking clamping block; 2321, clamping component; 2322, arc-shaped inner wall; 2323, wedge block; 233, flat washer; 234, anti-loosening washer; 235, compression nut; 236, top cover; 240, clamping mechanism; 241, clamping outer sleeve; 2411, internal thread section; 2412, clamping cavity; 2413, clearance cavity; 242, clamping inner sleeve; 2421, external thread section; 2422, clamping block; 2423, limiting protrusion. Detailed Implementation

[0036] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0037] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0038] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0039] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0040] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0041] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0042] See Figure 1 and Figure 2 One embodiment of this application provides a telescopic rod assembly. The telescopic rod assembly 200 includes a female support rod 210, a male support rod 220, a locking mechanism 230, and a clamping mechanism 240. One end of the male support rod 220 extends into the female support rod 210 and is slidably connected to the female support rod 210 along a first direction. The locking mechanism 230 is disposed between the male support rod 220 and the female support rod 210 to lock the male support rod 220 and the female support rod 210. The clamping mechanism 240 is disposed between the male support rod 220 and the female support rod 210 and is located on one side of the locking mechanism 230 along the first direction. The outer wall of the clamping mechanism 240 abuts against the inner wall of the female support rod 210, and the inner wall of the clamping mechanism 240 abuts against the outer wall of the male support rod 220.

[0043] In this embodiment, the clamping mechanism 240 and the locking mechanism 230 are respectively disposed between the female support rod 210 and the male support rod 220, and the clamping mechanism 240 and the locking mechanism 230 are arranged axially, that is, providing two contact points between the female support rod and the male support rod, ensuring that the axial directions of the male support rod 220 and the female support rod 210 always coincide, and preventing the male support rod 220 from swinging radially relative to the female support rod 210 under the action of external force. At the same time, the clamping mechanism 240 can also increase the friction between the female support rod and the male support rod, thereby improving the locking force of the female support rod and the male support rod. The first direction is the axial direction of the female support rod 210.

[0044] In some embodiments, combined with Figures 2-5The locking mechanism 230 includes a locking sleeve 231 and a locking clamp 232. The locking sleeve 231 is fixed to the inner side of the female support rod 210, and the locking clamp 232 is sleeved on the outer side of the male support rod 220 and can slide along the axial direction of the male support rod 220. The locking sleeve 231 is used to sleeve on the outer side of the locking clamp 232, and the inner diameter of the locking sleeve 231 and / or the outer diameter of the locking clamp 232 gradually changes along the insertion direction of the male support rod 220, so that the locking sleeve 231 and the locking clamp 232 move radially relative to each other and press the male support rod 220.

[0045] During installation, first, the locking sleeve 231 is fixed inside the mother support rod 210. Then, the locking clamp 232 is fitted onto the child support rod 220, and the child support rod 220 is extended into the mother support rod 210, allowing the locking clamp 232 to gradually penetrate into the locking sleeve 231. At this time, because the size of the locking sleeve 231 gradually decreases and / or the size of the locking clamp 232 gradually increases, the locking clamp 232 can clamp the child support rod 220 inside, thereby achieving the locking of the wooden support rod and the child support rod 220. Before locking, the locking clamp 232 can slide on the support rod, meaning that any position of the child support rod 220 can be locked with the locking sleeve 231 on the mother support rod 210.

[0046] Specifically, the inner diameter of the locking sleeve 231 and / or the outer diameter of the locking clamp 232 gradually change along the insertion direction of the sub-support rod 220, so that the locking sleeve 231 and the locking clamp 232 move radially relative to each other and press against the sub-support rod 220. This can be considered as follows: along the insertion direction of the sub-support rod 220, the inner diameter of the locking sleeve 231 remains constant while the outer diameter of the locking clamp 232 gradually increases; or the inner diameter of the locking clamp 232 remains constant while the inner diameter of the locking sleeve 231 gradually decreases; or the outer diameter of the locking clamp 232 gradually increases while the inner diameter of the locking sleeve 231 gradually decreases; or both the outer diameter of the locking clamp 232 and the inner diameter of the locking sleeve 231 gradually decrease, but the decrease in the outer diameter of the locking clamp 232 is less than the decrease in the inner diameter of the locking sleeve 231.

[0047] Of course, the outer diameter of the locking clamp 232 and the inner diameter of the locking sleeve 231 can both gradually decrease, and the decrease rate of the two is equal. However, the outer diameter of the locking clamp 232 is greater than or equal to the inner diameter of the locking sleeve 231. That is, the locking clamp 232 and the locking sleeve 231 are interference fit, and the locking clamp 232 can shrink inward radially.

[0048] In this embodiment, since the locking clamp 232 and the locking sleeve 231 are interference-fitted, and the locking clamp 232 can retract radially inward, when the locking clamp 232 is inserted into the locking sleeve 231, the locking sleeve 231 can press the locking clamp 232 to retract inward, thereby causing the locking clamp 232 to clamp the sub-support rod 220.

[0049] Furthermore, the locking clamp 232 includes two clamping members 2321 that are radially opposite to each other and spaced apart along the sub-support rod 220. Each clamping member 2321 includes an arc-shaped inner wall 2322 and a plurality of clamping blocks disposed outside the arc-shaped inner wall 2322. The plurality of clamping blocks are arranged sequentially and spaced apart along the circumference of the arc-shaped inner wall 2322. And along the insertion direction, the outer wall of each clamping block is radially inclined inward.

[0050] In actual use, as the inner diameter of the locking sleeve 231 gradually decreases, when the locking clamp 232 is inserted into the locking sleeve 231, the locking clamp 232 squeezes multiple wedge blocks 2323 so that the two clamps move closer to each other, and the distance between two adjacent wedge blocks 2323 gradually decreases so that the two arc-shaped inner walls 2322 clamp the outer wall of the sub-support rod 220.

[0051] In order to enhance the friction between the arc-shaped inner wall 2322 and the sub-support rod 220, a friction structure can be added to the arc-shaped inner wall 2322, such as diamond knurling and sandblasting hardening treatment.

[0052] In some embodiments, the female support rod 210 is provided with a threaded connection section 211 on one side along the first direction; the locking sleeve 231 is threadedly connected to the threaded connection section 211, thereby achieving a fixed connection between the locking sleeve 231 and the female support rod 210. During installation, the telescopic rod assembly 200 can be extended or retracted simply by adjusting the position of the clamping block on the sub-support rod 220.

[0053] Furthermore, the locking mechanism 230 includes a clamping nut 235, which is sleeved on the outside of the sub-support rod 220. The clamping nut 235 is located on the side of the locking clamp block 232 away from the insertion direction, and the clamping nut 235 is threadedly connected to the threaded connection section 211.

[0054] Furthermore, the locking mechanism 230 also includes a flat washer 233 and an anti-loosening washer 234. The flat washer 233, the anti-loosening washer 234, and the clamping nut 235 are stacked in sequence, and the anti-loosening washer 234 has anti-slip texture on the side near the clamping nut 235. The flat washer 233 is set on the locking clamping block 232, and the clamping nut 235 has external threads, which are connected to the internal threads of the female support rod 210. During installation, when the clamping nut 235 is rotated, the clamping nut 235 can press the locking clamping block 232 in sequence through the anti-loosening washer 234 and the flat washer 233, so that the locking clamping block 232 moves downward, so that the locking outer sleeve 231 presses the locking clamping block 232, and the locking clamping block 232 clamps the support rod.

[0055] In some embodiments, the locking mechanism 230 further includes a top cover 236, which has a through hole for the sub-support rod 220 to pass through. The top cover 236 covers the end of the female support rod 210 with the threaded connection section 211, and the top cover 236 is sealed to the sub-support rod 220.

[0056] The top cover 236 is placed on the top of the mother support rod 210 and is sealed to the child support rod 220 to prevent rainwater from entering between the child support rod 220 and the mother support rod 210, which could lead to corrosion inside the child support rod 220 and the mother support rod 210 over a long period of time.

[0057] In other embodiments, the locking sleeve 231 can move inside the female support rod 210, and after moving to the corresponding position, it can be fixed with the locking sleeve 231. For example, the female support rod 210 has an inner nut, and the locking sleeve 231 can rotate to any height inside the female support rod 210. Through the self-locking property of the thread, the locking sleeve 231 can be locked in any position, so as to lock the sub-support rod 220 in any position through the locking sleeve 231. The locking clamp 232 is directly fixedly sleeved on the outside of the sub-support rod 220. Along the direction in which the sub-support rod 220 extends into the female support rod 210, the internal size of the locking sleeve 231 gradually decreases. When the sub-support rod 220 extends into the female support rod 210, the locking sleeve 231 gradually clamps the sub-support rod 220 through the locking clamp 232, so that the sub-support rod 220 is locked relative to the female support rod 210.

[0058] In some embodiments, combined with Figures 6-9 The clamping mechanism 240 is located on one side of the locking mechanism 230 along the insertion direction of the support rod. The clamping mechanism 240 is located between the inner wall of the mother support rod 210 and the outer wall of the son support rod 220. The outer wall of the clamping mechanism 240 abuts against the inner wall of the mother support rod 210, and the inner wall of the clamping mechanism 240 abuts against the outer wall of the son support rod 220.

[0059] In this embodiment, the clamping mechanism 240 further includes a clamping outer sleeve 241 and a clamping inner sleeve 242. The clamping outer sleeve 241 is fixed inside the mother support rod 210, and the clamping inner sleeve 242 is sleeved outside the son support rod 220. The clamping outer sleeve 241 is sleeved outside the clamping inner sleeve 242, and the inner diameter of the clamping outer sleeve 241 and / or the outer diameter of the clamping inner sleeve 242 gradually changes along the insertion direction of the son support rod 220, so that the clamping outer sleeve 241 and the clamping inner sleeve 242 move radially relative to each other and clamp the son support rod 220.

[0060] The radial variation of the clamping outer sleeve 241 and the clamping inner sleeve 242 can be referenced to the radial variation between the locking outer sleeve 231 and the locking clamping block 232 mentioned above.

[0061] In some embodiments, the clamping outer sleeve 241 includes an internal threaded section 2411 and a clamping cavity 2412 arranged sequentially along the insertion direction; the clamping inner sleeve 242 includes an external threaded section 2421 and a clamping block 2422 arranged sequentially along the insertion direction; wherein, the internal threaded section 2411 is threadedly connected to the external threaded section 2421, and the clamping block 2422 is used to be inserted into the clamping cavity 2412, and the inner wall of the clamping cavity 2412 abuts against the outer wall of the clamping block 2422.

[0062] Specifically, a limiting groove 221 is provided on one of the sub-support rod 220 and the clamping inner sleeve 242, and a limiting protrusion 2423 is provided on the other. The limiting groove 221 and the limiting protrusion 2423 cooperate with each other. For example, the sub-support rod 220 is provided with a limiting groove 221 extending axially, and the clamping inner sleeve 242 is provided with a limiting protrusion 2423. When the sub-support rod 220 is rotated, it can be ensured that the clamping inner sleeve 242 and the sub-support rod 220 rotate simultaneously.

[0063] During installation, first, the clamping outer sleeve 241 is fixed inside the mother support rod 210. Specifically, the clamping outer sleeve 241 can be directly installed inside the mother support rod 210 at the factory. Then, the clamping inner sleeve 242 is fitted onto the sub-support rod 220, and the position of the clamping inner sleeve 242 on the sub-support rod 220 is adjusted according to the required length of the telescopic rod assembly 200. Next, the sub-support rod 220 is rotated to drive the clamping inner sleeve 242 to rotate relative to the clamping outer sleeve 241, thereby causing the clamping inner sleeve 242 to move downward relative to the clamping outer sleeve 241, so that the clamping block 2422 is gradually inserted into the clamping cavity 2412, and then the inner wall of the clamping cavity 2412 abuts against the outer wall of the clamping block 2422, that is, the clamping mechanism 240 is installed.

[0064] After the clamping mechanism 240 is installed, the locking sleeve 231 is passed through the sub-support rod 220 and threadedly connected to the threaded connection section 211 on the female support rod 210. Then, the locking clamp block 232, flat washer 233, anti-loosening washer 234, and clamping nut 235 are sequentially fitted onto the sub-support rod 220. The clamping nut 235 is rotated so that the clamping nut 235 presses the locking clamp block 232 through the anti-loosening washer 234 and flat washer 233 in sequence, so that the locking clamp block 232 moves downward, thereby causing the locking sleeve 231 to press the locking clamp block 232, so that the support rod is clamped by the locking clamp block 232. Finally, the top cover 236 is passed through the sub-support rod 220 to cover the top of the female support rod 210, and the top cover 236 is glued to the sub-support rod 220.

[0065] In some embodiments, there are multiple clamping blocks 2422, which are arranged in a ring at intervals, and the outer wall of each clamping block 2422 is radially inward along the insertion direction.

[0066] In this embodiment, along the insertion direction, the outer wall of each clamping block 2422 is radially inward, so that the clamping block 2422 can be quickly inserted into the clamping cavity 2412. Furthermore, since the multiple clamping blocks 2422 are arranged in a ring at intervals, as the clamping blocks 2422 continue to be inserted downward into the clamping cavity 2412, the clamping cavity 2412 can simultaneously compress the multiple clamping blocks 2422, causing the multiple clamping blocks 2422 to move radially inward, thereby clamping the sub-support rod 220.

[0067] In some embodiments, the inner diameter of the clamping cavity 2412 gradually decreases along the insertion direction, which can increase the contact area between the inner wall of the clamping cavity 2412 and the clamping block 2422, thereby improving the stability of the sub-support rod 220.

[0068] Specifically, a clearance cavity 2413 is provided between the clamping cavity 2412 and the internal thread section 2411. The inner diameter of the clearance cavity 2413 near the internal thread section 2411 is larger than the maximum outer diameter of the external thread section 2421 of the clamping inner sleeve 242, so that the external thread section 2421 can extend into the clearance cavity 2413, ensuring that the clamping outer sleeve 241 can clamp the clamping inner sleeve 242.

[0069] It should be noted that the telescopic pole assembly of this application can be used in any field where the stability and support strength of the telescopic pole assembly are required. For example, the telescopic pole assembly can be used in the field of photovoltaic brackets, measuring tool poles, scaffolding in building construction, support poles for large stages, support poles for medical facilities, tent support poles, slope protection support poles, temporary bridge support poles, maintenance platform support poles, etc.

[0070] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0071] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A telescopic pole assembly, characterized in that, The telescopic pole assembly includes: Mother strut; The sub-support rod has one end inserted into the mother support rod and is slidably connected to the mother support rod along the first direction; A locking mechanism is provided between the sub-support rod and the mother support rod for locking the sub-support rod and the mother support rod; A clamping mechanism is disposed between the sub-support rod and the mother support rod, and is located on one side of the locking mechanism along the first direction. The outer wall of the clamping mechanism abuts against the inner wall of the mother support rod, and the inner wall of the clamping mechanism abuts against the outer wall of the sub-support rod.

2. The telescopic pole assembly according to claim 1, characterized in that, The locking mechanism includes a locking sleeve and a locking clamp. The locking sleeve is fixed to the inner side of the female support rod, and the locking clamp is sleeved on the outer side of the male support rod and can slide along the axial direction of the male support rod. The locking sleeve is used to fit over the locking clamp, and the inner diameter of the locking sleeve and / or the outer diameter of the locking clamp gradually changes along the insertion direction of the sub-support rod, so that the locking sleeve and the locking clamp move radially relative to each other and press the sub-support rod.

3. The telescoping pole assembly of claim 2, wherein, The outer diameter of the locking clamp and the inner diameter of the locking sleeve gradually decrease along the insertion direction; The locking clamp is interference-fitted with the locking outer sleeve, and the locking clamp can retract radially inward.

4. The telescoping pole assembly of claim 3, wherein, The locking clamp includes two clamping members that are radially opposite to each other and spaced apart along the sub-support rod. Each clamping member includes an arc-shaped inner wall and a plurality of clamping blocks disposed outside the arc-shaped inner wall. The plurality of clamping blocks are arranged sequentially at intervals along the circumference of the arc-shaped inner wall. And along the insertion direction, the outer wall of each clamping block is radially inward.

5. The telescoping pole assembly of claim 2, wherein, The female support rod is provided with a threaded connection section at one end along the first direction; The locking sleeve is threadedly connected to the threaded connection section; The locking mechanism includes a clamping nut, which is sleeved on the outside of the sub-support rod. The clamping nut is located on the side of the locking clamp block opposite to the insertion direction, and the clamping nut is threadedly connected to the threaded connection section.

6. The telescoping pole assembly of claim 5, wherein, The locking mechanism also includes a top cover, which has a through hole for the sub-support rod to pass through. The top cover is placed over the end of the female support rod with a threaded connection section, and the top cover is sealed to the sub-support rod.

7. The telescoping pole assembly of claim 1, wherein, The clamping mechanism includes a clamping outer sleeve and a clamping inner sleeve. The clamping outer sleeve is fixed inside the mother support rod, and the clamping inner sleeve is sleeved outside the child support rod. The clamping outer sleeve is sleeved outside the clamping inner sleeve, and the inner diameter of the clamping outer sleeve and / or the outer diameter of the clamping inner sleeve gradually changes along the insertion direction of the child support rod, so that the clamping outer sleeve and the clamping inner sleeve move radially relative to each other and clamp the child support rod.

8. The telescopic pole assembly according to claim 7, characterized in that, The clamping outer sleeve includes an internal thread section and a clamping cavity arranged sequentially along the insertion direction; The clamping inner sleeve includes an external thread segment and a clamping block arranged sequentially along the insertion direction; The internal thread section is threadedly connected to the external thread section, and the clamping block is used to be inserted into the clamping cavity so that the inner wall of the clamping cavity abuts against the outer wall of the clamping block.

9. The telescoping pole assembly of claim 8, wherein, The number of the embracing blocks is multiple, the multiple embracing blocks are arranged in a ring shape and are spaced in sequence, and along the insertion direction, the outer wall of each embracing block is inclined radially inward.

10. The telescoping pole assembly of claim 8, wherein, Along the insertion direction, the inner diameter of the embracing cavity gradually decreases.

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