Pull rod with connecting device

Abstract

The utility model discloses a pull rod with a connecting device, the connecting device is arranged in a connecting area of a first pull rod and a second pull rod, the first pull rod is arranged in an accommodating cavity of the second pull rod, and the pull rod connecting device comprises a gasket, a plug and an elastic piece; the outer side of the plug is sleeved with the gasket. Supporting pieces arranged in pairs are arranged at one end of the plug, an elastic piece is installed between the supporting pieces, the gasket is arranged between the first pull rod and the second pull rod and attached to the side walls of the two pull rods, and the supporting pieces are attached to the inner wall of the first pull rod under the action of the elastic piece. The pull rod connecting device is simple in structure, convenient to install and operate and good in positioning effect, when the inner pipe and the outer pipe are pulled out or retracted, the elastic relaxation is moderate, and the stability is better after the inner pipe and the outer pipe are stretched.

Description

Technical Field

[0001] This utility model relates to the field of equipment assembly, and in particular to a tie rod with a connecting device. Background Technology

[0002] Currently, telescopic poles are widely used in various products, including selfie sticks, telescopic clotheslines, telescopic umbrella handles, fishing rods, mops, and telescopic electric fans. Telescopic poles are characterized by their extendable length, easy storage, and portability. They can be extended to the required length when in use and retracted when not in use to save space. However, existing telescopic poles have several positioning problems. For example, multiple positioning plates are attached between the two movable tubes of the telescopic pole. The movable tube inside the positioning plates is the inner tube, and the movable tube outside the positioning plates is the outer tube. The positioning plates achieve the extension and retraction of the telescopic pole through their own elastic deformation, but this can easily become loose after long-term use, resulting in poor performance. Therefore, solving this problem is an urgent issue that needs to be addressed. Summary of the Invention

[0003] To address the shortcomings of the aforementioned technologies, this utility model provides a pull rod with a connecting device, which has a simple structure, is easy to install and operate, has a good positioning effect, and exhibits well-controlled elasticity when the inner and outer tubes are pulled out or retracted, resulting in better stability after stretching.

[0004] To achieve the above objectives, this utility model provides a pull rod with a connecting device. The connecting device is installed in the connection area of ​​a first pull rod and a second pull rod. The first pull rod is disposed within the receiving cavity of the second pull rod. The pull rod connecting device includes a gasket, a plug, and an elastic element. The gasket is sleeved on the outside of the plug. One end of the plug is provided with a pair of supporting members, and the elastic element is installed between the supporting members. The gasket is disposed between the first pull rod and the second pull rod, and fits against the side walls of the two pull rods. Under the action of the elastic element, the supporting members fit against the inner wall of the first pull rod, ensuring that the outer surface of the first pull rod fits against the inner wall of the second pull rod.

[0005] Preferably, the gasket is provided in multiple pieces, which are arranged around the outside of the plug. The outer wall of the gasket is provided with an outward protrusion and a groove, and the inner wall of the gasket is provided with a bulge that protrudes outward from the inner wall surface.

[0006] Preferably, there are multiple protrusions evenly distributed on the outer wall of the gasket. Each protrusion has a rectangular structure with its long side axially oriented and its edge has a bevel. The groove is axially oriented along the outer surface of the gasket and is located between the multiple protrusions.

[0007] Preferably, two protrusions are provided on the same gasket, the two protrusions are set at the same height, one side of the protrusion is a bevel structure, and the bevel structures of the two protrusions are arranged opposite to each other.

[0008] Preferably, the plug includes a base and a support member. The support member is fixedly connected to the base as an integral structure. The outer edge of the base is provided with a boss. The outer surface of the support member is provided with a blind groove. The inner surface of the paired support members is provided with a fixing device. The elastic member is provided next to the fixing device.

[0009] Preferably, the opening of the blind groove faces the boss, and the symmetrically arranged support members have notches on the side away from the boss that are adapted to the groove.

[0010] Preferably, the side of the support member is provided with a plurality of auxiliary blocks, the auxiliary blocks are attached to the support member and are fixedly connected to the support member to form an integral structure, and the auxiliary blocks extend to the lower part of the fixing device.

[0011] Preferably, the elastic element is either a spring or a sheet spring.

[0012] The beneficial effects of this utility model are as follows: Compared with the prior art, the tie rod with a connecting device provided by this utility model, through the connecting device set between two tie rod sections, can not only ensure the effective extension and retraction of the tie rod, but also play a reinforcing role. When bearing force, the entire tie rod is not easy to deform. More specifically, the elastic element generates a horizontal force on the support element, thereby increasing the friction between the two tie rods, so that the tie rod as a whole can better play the supporting role, and will not affect the use of the entire telescopic rod due to receiving a large supporting force. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the usage state of this utility model;

[0014] Figure 2 This is a schematic diagram of the main structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the plug structure of this utility model;

[0016] Figure 4 This is a schematic diagram of the outer wall of the gasket of this utility model;

[0017] Figure 5 This is a schematic diagram of the inner wall of the gasket of this utility model;

[0018] Figure 6 This is a cross-sectional view of the structure of this utility model.

[0019] Description of main components:

[0020] 1. Pull rod 2. Plug 3. Washer 4. Elastic element

[0021] 11. Second tie rod 12. First tie rod 21. Boss 22. Support 23. Blind slot

[0022] 24. Notch 25. Auxiliary block 31. Outer protrusion 32. Slide groove 33. Protrusion 331. Inclined structure. Detailed Implementation

[0023] To more clearly illustrate this utility model, it will be further described below with reference to the accompanying drawings. Of course, the scope of protection of this utility model is not limited to this. Simple substitutions that can be made by those skilled in the art without creative effort are all within the scope of protection of this utility model.

[0024] Please see Figures 1 to 6 This utility model provides a pull rod with a connecting device. The connecting device is installed in the connection area of ​​a first pull rod 12 and a second pull rod 11. The first pull rod 12 is disposed in the receiving cavity of the second pull rod 11. The pull rod connecting device includes a gasket 3, a plug 2, and an elastic element 4. The gasket 3 is sleeved on the outside of the plug 2. One end of the plug 2 is provided with a pair of support members 22. An elastic element 4 is installed between the support members 22. The gasket 3 is disposed between the first pull rod 12 and the second pull rod 11 and fits against the side walls of the two pull rods. Under the action of the elastic element 4, the support member 22 fits against the inner wall of the first pull rod 12, ensuring that the outer surface of the first pull rod fits against the inner wall of the second pull rod. In this embodiment, the telescopic rod is typically composed of multiple tie rods 1. These multiple tie rods are interconnected by a tie rod connecting device, thereby enabling the extension and retraction of the multiple tie rods. By utilizing the cooperation between the plug and the elastic element, the support on the plug generates outward pressure under the action of the elastic element, causing the gasket to exert a greater force on the first tie rod, thereby increasing the frictional force and enabling the tie rod to bear a greater mass when it is extended.

[0025] To achieve the above solution, multiple gaskets 3 are provided, which are arranged around the outside of the plug 2. The outer wall of each gasket 3 has an outward protrusion 31 and a groove 32. The inner wall of each gasket 3 has a protrusion 33, which protrudes outward from the inner wall surface. Multiple outward protrusions 31 are evenly distributed on the outer wall of the gasket 3. Each outward protrusion 31 has a rectangular structure with its long side axially aligned and its edge having a bevel. The groove 32 is axially aligned along the outer surface of the gasket 3 and located between the multiple outward protrusions 31. Two protrusions 33 are provided on the same gasket 3, and the two protrusions 33 are at the same height. One side of each protrusion 33 has a bevel structure 331, and the bevel structures of the two protrusions 33 are positioned opposite each other. In this embodiment, a gasket is provided, and the second pull rod has a through-hole structure that matches the gasket, thereby effectively filling the gap between the first and second pull rods, so that both pull rods are in contact with the gasket, thereby generating friction during movement. The protrusion on the outer wall of the gasket can effectively increase the friction between the two, and the inclined structure of the protrusion can effectively reduce the force required for the pull rod to move axially, making it easier for the user to stretch or store it.

[0026] The plug 2 includes a base and a support member 22. The support member 22 is fixedly connected to the base as an integral structure. The outer edge of the base has a boss 21. The outer surface of the support member 22 has a blind groove 23. The inner surface of the paired support members 22 has a fixing device. An elastic member 4 is provided next to the fixing device. The opening of the blind groove 23 faces the boss 21. The symmetrically arranged support members 22 have a notch 24 on the side away from the boss 21 that matches the groove. The side of the support member 22 has multiple auxiliary blocks 25. The auxiliary blocks 25 fit against the support member 22 and are fixedly connected to the support member 22 as an integral structure. The auxiliary blocks 25 extend to the lower part of the fixing device. The elastic member 4 is either a spring or a spring sheet. In this embodiment, a through hole adapted to the gasket is first provided on the second pull rod (i.e., the inner rod), which facilitates the cooperation between the support and the gasket. More specifically, the protrusion on the inner wall of the gasket passes through the through hole of the second pull rod and engages in the blind groove. This not only allows the second pull rod to move the gasket when it moves, but also limits the distance that can be moved by the cooperation between the blind groove and the protrusion. At the same time, the adaptation between the notch and the slide groove makes the installation of the gasket more accurate and effective in positioning. In actual use, the elastic element can be a spring, and the fixing device is a pin. The two ends of the spring are sleeved on the pin and do not fall off, thereby effectively utilizing the elastic potential energy of the spring to increase the friction. Alternatively, a spring sheet can be used. When the elastic element is a spring sheet, the spring sheet is placed on the auxiliary block, and the upper fixing device prevents the spring sheet from falling off from the top. At this time, the elasticity of the spring sheet causes the support to generate outward pressure from all sides, thereby increasing the friction.

[0027] The above-disclosed embodiments are only a few specific examples of this utility model. However, this utility model is not limited thereto. Any variations that can be conceived by those skilled in the art should fall within the protection scope of this utility model.

Claims

1. A pull rod with a connecting device, characterized in that, The connecting device is installed in the connection area of ​​the first pull rod and the second pull rod. The first pull rod is disposed in the receiving cavity of the second pull rod. The connecting device includes a gasket, a plug, and an elastic element. The gasket is sleeved on the outside of the plug. One end of the plug is provided with a pair of support members. The elastic element is installed between the support members. The gasket is disposed between the first pull rod and the second pull rod and fits against the side walls of the two pull rods. The support members fit against the inner wall of the first pull rod under the action of the elastic element, ensuring that the outer surface of the first pull rod fits against the inner wall of the second pull rod.

2. The pull rod with a connecting device according to claim 1, characterized in that, The gasket is provided in multiple pieces, which are arranged around the outside of the plug. The outer wall of the gasket is provided with an outward protrusion and a groove, and the inner wall of the gasket is provided with a protrusion that protrudes outward from the inner wall surface.

3. The pull rod with a connecting device according to claim 2, characterized in that, The outer protrusions are provided in multiples and are evenly distributed on the outer wall of the gasket. The outer protrusions are rectangular structures with their long sides axially arranged. The edges of the outer protrusions are provided with bevels. The sliding grooves are axially arranged along the outer surface of the gasket and are located between the multiple outer protrusions.

4. The pull rod with a connecting device according to claim 2, characterized in that, Two protrusions are provided on the same gasket, and the two protrusions are set at the same height. One side of each protrusion is a beveled structure, and the beveled structures of the two protrusions are arranged opposite each other.

5. The pull rod with a connecting device according to claim 1, characterized in that, The plug includes a base and a support member. The support member is fixedly connected to the base as an integral structure. The outer edge of the base is provided with a boss. The outer surface of the support member is provided with a blind groove. The inner surface of the paired support members is provided with a fixing device. The elastic member is provided next to the fixing device.

6. The pull rod with a connecting device according to claim 5, characterized in that, The opening of the blind groove faces the boss, and the symmetrically arranged support members have notches on the side away from the boss that are adapted to the groove.

7. The pull rod with a connecting device according to claim 5, characterized in that, The side of the support member is provided with multiple auxiliary blocks. The auxiliary blocks are attached to the support member and are fixedly connected to the support member to form an integral structure. The auxiliary blocks extend to the lower part of the fixing device.

8. The pull rod with a connecting device according to claim 1, characterized in that, The elastic element is either a spring or a sheet spring.

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