Telescopic rod tail plug

Abstract

The utility model relates to mechanical connection technical field, concretely relates to a telescopic link tail plug, include: first tail plug, first tail plug sets up in one end of telescopic link, second tail plug, second tail plug sets up in the other end of telescopic link, first tail plug and second tail plug all include panel part and set up in panel part and along the contact portion of height direction extension, panel part and contact portion integral setting, contact portion is located in the inside of telescopic link and with the inner wall contact of telescopic link, panel part is connected with the end of telescopic link, through the integration design of panel part and contact portion makes contact portion close fit telescopic link inner wall, effectively solved the problem that traditional tail plug connection is not stable and the loose drop problem caused by bad contact, has the advantages such as improving tail plug and telescopic link inner wall adhesion, enhancing the connection stability, reducing telescopic process rod body loose drop phenomenon, improving operation smoothness and stability.

Description

Technical Field

[0001] This utility model relates to the field of mechanical connection technology, specifically to a telescopic rod tail plug. Background Technology

[0002] Telescopic poles, as adjustable-length devices composed of multiple tubular sections, achieve their telescopic function through a snap-fit ​​structure and are widely used in everyday items such as clotheslines and selfie sticks. However, the existing telescopic pole tail plug design has significant flaws. The contact method between the tail plug and the inner wall of the pole is simple, lacking an effective fixing mechanism, which leads to the pole easily becoming loose, falling off, or displaced during extension and retraction. Specifically, the connection between the traditional tail plug's panel and end is unstable, and the contact part cannot fully fit the inner wall, resulting in unsmooth telescopic operation and poor stability. This not only affects the user experience but may also cause safety hazards due to connection failure. Furthermore, the existing tail plug structure is too simple to adapt to different inner wall variations of the pole, further limiting the reliability and service life of the telescopic pole. Utility Model Content

[0003] The purpose of this application is to provide a telescopic rod end plug, which has the advantages of improving the fit between the end plug and the inner wall of the telescopic rod, enhancing the connection stability, reducing the phenomenon of the rod loosening and falling off during telescopic movement, and improving the smoothness and stability of operation.

[0004] This application provides a telescopic rod end plug, the technical solution of which is as follows:

[0005] include:

[0006] The first tail plug is located at one end of the telescopic rod;

[0007] The second tail plug is located at the other end of the telescopic rod;

[0008] Both the first and second tail plugs include a panel portion and a contact portion disposed on the panel portion and extending along the height direction. The panel portion and the contact portion are integrally disposed. The contact portion is located inside the telescopic rod and contacts the inner wall of the telescopic rod. The panel portion is connected to the end of the telescopic rod.

[0009] Furthermore, this application also proposes that the cross-sectional area of ​​the contact portion is smaller than the cross-sectional area of ​​the panel portion.

[0010] Furthermore, this application also proposes that the side of the contact portion is provided with an elastic element.

[0011] Furthermore, this application also proposes that the elastic element is a snap-fit.

[0012] Furthermore, this application also proposes that the buckle has an elastic sheet and protrusions disposed on the elastic sheet.

[0013] Furthermore, this application also proposes that the side of the telescopic rod is provided with a groove corresponding to the protrusion, and the protrusion is placed in the groove.

[0014] Furthermore, this application also proposes that the panel is provided with a first through hole and a second through hole, two first through holes are arranged side by side, the inner rod of the telescopic rod extends out of the second through hole, and the outline of the second through hole corresponds to the outline of the inner rod.

[0015] Furthermore, this application also proposes to include a third tail plug, which is disposed inside the telescopic rod and moves along the inner wall of the telescopic rod.

[0016] Furthermore, this application also proposes that the third tail plug includes a sliding portion and an abutting portion disposed within the sliding portion, wherein the end of the inner rod is located within the sliding portion and abuts against the abutting portion.

[0017] Furthermore, this application also proposes that the abutment portion is provided with a third through hole, and two third through holes are arranged side by side.

[0018] As can be seen from the above, the telescopic rod tail plug provided in this application, through the integrated design of the panel and the contact part, makes the contact part tightly fit the inner wall of the telescopic rod, effectively solving the problem of loosening and falling off caused by unstable connection and poor contact of traditional tail plugs. It has the advantages of improving the fit between the tail plug and the inner wall of the telescopic rod, enhancing the connection stability, reducing the phenomenon of the rod body loosening and falling off during telescopic movement, and improving the smoothness and stability of operation. Attached Figure Description

[0019] Figure 1 This is an assembly diagram of the various components in this utility model;

[0020] Figure 2 This is an exploded structural diagram of each component in this utility model;

[0021] Figure 3 for Figure 2 A magnified view of part A in the diagram;

[0022] Figure 4 This is a schematic diagram of the overall structure of the first tail plug, the second tail plug, and the third tail plug in this utility model;

[0023] Figure 5 This is a top view of the components in this utility model;

[0024] Figure 6 for Figure 5 Schematic diagram of the cross section of AA;

[0025] Figure 7 for Figure 6 A magnified view of part B in the diagram.

[0026] In the attached diagram, 1 is the first tail plug; 2 is the second tail plug; 3 is the third tail plug; 4 is the telescopic rod; 5 is the inner rod; 6 is the panel; 7 is the contact part; and 8 is the elastic element.

[0027] 31. Sliding part; 32. Abutting part; 33. Third through hole; 34. Locating pin; 35. Spring;

[0028] 41. Groove; 42. Positioning hole;

[0029] 61. First through hole; 62. Second through hole;

[0030] 81. Elastic sheet; 82. Protrusion. Detailed Implementation

[0031] To facilitate understanding of this utility model by those skilled in the art, the specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0032] like Figures 1-7 As shown in the figure, this application provides a telescopic rod tail plug, comprising:

[0033] First tail plug 1, the first tail plug 1 is set at one end of the telescopic rod 4;

[0034] The second tail plug 2 is located at the other end of the telescopic rod 4;

[0035] Both the first tail plug 1 and the second tail plug 2 include a panel portion 6 and a contact portion 7 disposed on the panel portion 6 and extending along the height direction. The panel portion 6 and the contact portion 7 are integrally disposed. The contact portion 7 is located inside the telescopic rod 4 and contacts the inner wall of the telescopic rod 4. The panel portion 6 is connected to the end of the telescopic rod 4.

[0036] The first tail plug 1 and the second tail plug 2 are respectively disposed at both ends of the telescopic rod 4. Both the first tail plug 1 and the second tail plug 2 include a panel portion 6 and a contact portion 7 extending along the height direction. The panel portion 6 and the contact portion 7 are designed as a single piece, thereby avoiding structural separation problems caused by connection gaps and enhancing overall strength. The contact portion 7 is located inside the telescopic rod 4 and forms a tight fit with the inner wall. Through this design, the contact portion 7 can provide radial restraint force, reducing possible shaking or loosening of the telescopic rod 4 during use. Furthermore, the panel portion 6 is connected to the end of the telescopic rod 4, and the geometry of the end ensures a firm attachment, thereby providing a reliable external fixing point for the telescopic rod 4.

[0037] Typically, the telescopic rod 4 is a hollow stainless steel rod with relatively thin and sharp edges, which poses a risk of hand injury during use. By placing the first tail plug 1 and the second tail plug 2 of this application at both ends of the tube, the edges at both ends of the tube can be prevented from scratching the hands, thus improving safety during use.

[0038] In some embodiments, the cross-sectional area of ​​the contact portion 7 is smaller than the cross-sectional area of ​​the panel portion 6.

[0039] By controlling the cross-sectional area of ​​its two parts, a step is generated between the contact part 7 and the panel part 6. The step can better fix the first tail plug 1 and the second tail plug 2 to the two ends of the telescopic rod 4, preventing the first tail plug 1 and the second tail plug 2 from moving into the tube body and failing to isolate the end of the tube body.

[0040] This application further proposes that the side of the contact portion 7 is provided with an elastic element 8.

[0041] When the tail plug is inserted into the telescopic rod 4, the elastic element 8 on the side of the contact portion 7 will undergo corresponding elastic deformation according to the specific shape of the inner wall of the telescopic rod 4. This deformation allows the elastic element 8 to fit tightly against the inner wall surface, regardless of any minor dimensional deviations or irregularities in the inner wall. After the tail plug is fully inserted, the elastic element 8 recovers some of its deformation, thereby applying continuous pressure to the inner wall in the radial direction. This pressure ensures a stable connection between the tail plug and the inner wall of the telescopic rod 4, effectively preventing relative displacement caused by external force vibration or load changes during use. Furthermore, since both the first tail plug 1 and the second tail plug 2 include the contact portion 7, and the contact portion 7 is integrally formed with the panel portion 6, this integrated structure, combined with the design of the elastic element 8, further enhances the reliability and stability of the tail plug after installation.

[0042] This application further proposes that the elastic element 8 is a snap-fit.

[0043] This technical solution effectively solves the stability defects that may exist in the form of a general elastic element 8 by specifically defining the elastic element 8 as a snap-fit. During installation, the snap-fit ​​can undergo controllable elastic deformation according to the inner wall size of the telescopic rod 4. During the deformation, the elastic plate 81 generates uniform pressure, causing the protrusion 82 to accurately embed into the inner wall groove 41, thus forming a self-locking mechanism when returning to its original shape. This design not only avoids the problem of fixation failure caused by dimensional deviation or uneven material, but also simplifies the assembly process and ensures that the tail plug maintains stable contact during repeated extension and retraction operations. At the same time, the design of the snap-fit ​​and its cooperation with the contact part 7 make the entire tail plug structure not only stable, but also improve the overall durability and user operation convenience.

[0044] This application further proposes a snap fastener having an elastic piece 81 and a protrusion 82 disposed on the elastic piece 81.

[0045] This solution effectively addresses the issue of insufficient stability in elastic contact by clearly defining the internal structure of the buckle. The elastic plate 81, as the basic structure, possesses reversible deformation capabilities due to its material properties and geometric design. During the operation of the telescopic rod 4, it dynamically adapts to fluctuations in the inner wall dimensions, avoiding stress concentration or permanent deformation caused by rigid contact. The protrusion 82, located on the elastic plate 81, utilizes the flexibility of the elastic plate 81 to achieve controllable bending and repositioning under stress. When the protrusion 82 slides into the groove 41, the rebound force of the elastic plate 81 drives the protrusion 82 to precisely engage and position itself, preventing slippage or misalignment. This structural design not only ensures smooth installation but also guarantees the robustness of the locked state, thus maintaining the long-term reliability of the connection during repeated extension and retraction.

[0046] This application further proposes that the side of the telescopic rod 4 is provided with a groove 41 corresponding to the protrusion 82, and the protrusion 82 is placed in the groove 41.

[0047] The groove 41 refers to a groove structure with a specific geometric shape and size opened on the side of the telescopic rod 4. It can be implemented in various forms such as rectangular groove, trapezoidal groove or arc groove. Its purpose is to provide a precise embedding path for the protrusion 82 and restrict its movement. The protrusion 82 refers to the protruding part set on the elastic sheet 81. It can be formed by injection molding, machining or assembly. Its purpose is to cooperate with the groove 41 to realize the fixing function of the tail plug. This solution achieves stable positioning of the tail plug through the cooperation mechanism of the groove 41 and the protrusion 82. The position of the groove 41 on the side of the telescopic rod 4 is precisely designed to ensure that it corresponds to a specific area of ​​the inner wall. When the tail plug moves to the target position with the telescopic rod 4, the protrusion 82 can naturally align with the entrance of the groove 41. The geometry and size of the groove 41 are specially customized for the protrusion 82 to avoid shaking caused by excessive gaps and to provide a reliable embedding path for the protrusion 82. After the protrusion 82 is placed in the groove 41, the restoring force of the snap-fit ​​elastic piece 81 is used to press the protrusion 82 tightly into the bottom of the groove 41, forming a mechanical interlock. This embedding method not only prevents the tail plug from displacing in the axial direction, but also eliminates the risk of accidental sliding through the lateral constraint of the groove 41 on the protrusion 82, ultimately achieving precise locking and long-term stability of the telescopic rod 4.

[0048] In some embodiments, the panel portion 6 of this application is provided with a first through hole 61 and a second through hole 62. Two first through holes 61 are arranged side by side, and the inner rod 5 of the telescopic rod 4 extends out of the second through hole 62. The outline of the second through hole 62 corresponds to the outline of the inner rod 5.

[0049] In some cases, a reinforcing member, such as an iron rod, can be installed in the first through hole 61. This can improve the load-bearing capacity of the telescopic rod 4. At the same time, a guide rail can be installed in the first through hole 61. The guide rail and the inner rod 5 are slidably connected, and the telescopic stability of the inner rod 5 is improved by the guide rail.

[0050] The contact portion 7 of the second through hole 62 is used to fill the gap between the inner rod 5 and the telescopic rod 4, while also covering and supporting the inner rod 5, improving the flexibility of the inner rod 5 and preventing the inner rod 5 from shaking.

[0051] This application further proposes that a third tail plug 3 is also included, which is disposed inside the telescopic rod 4 and moves along the inner wall of the telescopic rod 4.

[0052] This solution effectively solves the problem of swaying and positioning deviation caused by the lack of internal support in the inner rod 5 during extension and retraction by adding a third tail plug 3. The third tail plug 3 is positioned inside the telescopic rod 4, allowing it to directly embed into the rod structure and interact with the inner rod 5. Because the internal environment avoids interference from external factors, it provides a stable and reliable support foundation. Furthermore, the characteristic of the third tail plug 3 moving along the inner wall of the telescopic rod 4 ensures that it slides synchronously with the inner rod 5 and maintains close contact during extension and retraction. This movement mechanism adapts to the dynamic changes of the rod, continuously applying uniform support force and preventing the inner rod 5 from shifting or loosening during movement, ultimately achieving smoothness and operational precision in the extension and retraction process.

[0053] This application further proposes a third tail plug 3 including a sliding part 31 and an abutting part 32 disposed in the sliding part 31, wherein the end of the inner rod 5 is located in the sliding part 31 and abuts against the abutting part 32.

[0054] In this embodiment, the sliding part 31 is identical in shape to and fits snugly against the inner wall of the telescopic rod 4, which can prevent interference during movement.

[0055] This design integrates the abutment portion 32 inside the sliding portion 31, allowing the end of the inner rod 5 to be completely accommodated within the sliding portion 31, thus preventing positional displacement caused by external interference. As the sliding portion 31 moves along the inner wall of the telescopic rod 4, its internal abutment portion 32 remains in contact with the end of the inner rod 5, thereby maintaining the stable position of the inner rod 5 during extension and retraction.

[0056] This application further proposes that the abutment portion 32 is provided with a third through hole 33, and two third through holes 33 are arranged side by side.

[0057] In this embodiment, the third through hole 33 corresponds to the first through hole 61. The reason for providing two through holes is to fix the position of the reinforcing member and prevent it from shaking.

[0058] On the other hand, a positioning hole 42 is provided on the telescopic rod 4, and a positioning pin 34 is provided in the third tail plug 3. A spring 35 is provided between the positioning pin 34 and the third tail plug 3. The top of the positioning pin 34 has a circular boss, which cooperates with the positioning hole 42. When the third tail plug 3 moves, it drives the positioning pin 34 and the spring 35 to move together. After the circular boss falls into the positioning hole 42, the third tail plug 3 is fixed by the limiting of the circular boss and the positioning hole 42, so that the telescopic rod 4 and the inner rod 5 remain in the telescopic state.

[0059] The embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A telescopic rod end plug, characterized in that, include: The first tail plug (1) is located at one end of the telescopic rod (4); The second tail plug (2) is disposed at the other end of the telescopic rod (4); Both the first tail plug (1) and the second tail plug (2) include a panel portion (6) and a contact portion (7) disposed on the panel portion (6) and extending along the height direction. The panel portion (6) and the contact portion (7) are integrally disposed. The contact portion (7) is located inside the telescopic rod (4) and contacts the inner wall of the telescopic rod (4). The panel portion (6) abuts against the end of the telescopic rod (4).

2. The telescopic rod tail plug according to claim 1, characterized in that, The cross-sectional area of ​​the contact portion (7) is smaller than the cross-sectional area of ​​the panel portion (6).

3. The telescopic rod tail plug according to claim 1, characterized in that, An elastic element (8) is provided on the side of the contact portion (7).

4. A telescopic rod tail plug according to claim 3, characterized in that, The elastic element (8) is a snap fastener.

5. A telescopic rod end plug according to claim 4, characterized in that, The buckle has an elastic piece (81) and a protrusion (82) disposed on the elastic piece (81).

6. A telescopic rod end plug according to claim 5, characterized in that, The side of the telescopic rod (4) is provided with a groove (41) corresponding to the protrusion (82), and the protrusion (82) is placed in the groove (41).

7. A telescopic rod tail plug according to claim 1, characterized in that, The panel (6) is provided with a first through hole (61) and a second through hole (62). There are two first through holes (61) arranged side by side. The inner rod (5) of the telescopic rod (4) extends out of the second through hole (62). The outline of the second through hole (62) corresponds to the outline of the inner rod (5).

8. A telescopic rod tail plug according to claim 7, characterized in that, It also includes a third tail plug (3), which is disposed inside the telescopic rod (4) and moves along the inner wall of the telescopic rod (4).

9. A telescopic rod end plug according to claim 8, characterized in that, The third tail plug (3) includes a sliding part (31) and an abutting part (32) disposed in the sliding part (31), and the end of the inner rod (5) is located in the sliding part (31) and abuts against the abutting part (32).

10. A telescopic rod end plug according to claim 9, characterized in that, The abutment part (32) is provided with a third through hole (33), and there are two symmetrically arranged third through holes (33).

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