Novel pull rod

Abstract

The novel pull rod comprises a plug, a rod body and a gasket, the plug and the gasket are arranged on the same side of the rod body, the rod body is of a hollow structure, the gasket is arranged outside the rod body and attached to the outer wall of the rod body, the plug comprises an abutting portion and a supporting portion, the supporting portion is arranged inside the rod body and attached to the inner wall of the rod body, and the supporting portion is arranged on the inner wall of the rod body. The abutting part abuts against the side wall of the rod body. According to the pull rod, the plug and the gasket are arranged at the lower end of the rod body, the toughness of the pull rod is enhanced, more specifically, the plug is arranged, so that the internal space of the pull rod is filled, outward supporting force can be provided in the stretching process, the pull rod is prevented from loosening, and the service life of the pull rod is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of telescopic devices, in particular to a new type of pull rod. Background Art

[0002] At present, telescopic rods are widely used in various products, the most common of which are selfie sticks, telescopic clothes drying rods, telescopic umbrella handles, fishing rods, mops, telescopic electric fans, etc. The telescopic rod is characterized by being retractable, easy to store, and easy to carry. When in use, it can be extended to the required length to meet the use requirements. When not in use, it can be folded up to save space and be easy to carry and store. However, there are many problems with the positioning of existing telescopic rods. For example, there are multiple positioning plates attached between the two movable tubes of the telescopic rod. The movable tube located on the inner side of the positioning plate is the inner tube, and the movable tube located on the outer side of the positioning plate is the outer tube. The positioning plates realize the extension and retraction of the telescopic rod through their own elastic deformation, but they are prone to loosening after long-term use, resulting in poor performance. Alternatively, a locking device is provided between the two movable tubes of the telescopic rod, but the locking device is expensive. In addition, both existing positioning methods are relatively complex in structure and difficult to install and operate. Summary of the Invention

[0003] In response to the deficiencies in the above technologies, the utility model provides a new pull rod with a simple structure, easy installation and operation, good positioning effect, and a moderate elastic force when the inner and outer tubes are pulled out or retracted, thereby improving stability after stretching.

[0004] To achieve the above-mentioned purpose, the utility model provides a new pull rod, including a plug, a rod body and a gasket, the plug and the gasket are both arranged on the same side of the rod body, the rod body is a hollow structure, the gasket is arranged on the outside of the rod body, and is arranged in contact with the outer wall of the rod body, the plug includes a supporting part and a supporting part, the supporting part is arranged on the inside of the rod body, and is in contact with the inner wall of the rod body, and the supporting part is in contact with the side wall of the rod body.

[0005] Preferably, a convex strip is provided inside the rod body, and the convex strip and the rod body are an integral structure; a plurality of through holes are provided at one end of the rod body close to the plug, and the through holes are symmetrically arranged on the rod body.

[0006] Preferably, the gasket ring is sleeved on the outside of the rod body, the outer surface of the gasket is provided with a sliding groove, and the inner surface is provided with a plurality of limiting protrusions, and the limiting protrusions correspond to the through holes one by one; the limiting protrusions include an upper protrusion and a lower protrusion, and the upper protrusion and the lower protrusion are fixedly connected to form an integrated structure, and the side of the lower protrusion close to the plug is provided with an inclined surface, and the lateral lengths of the upper protrusion and the lower protrusion are different, thereby forming a receiving platform on the upper part of the lower protrusion.

[0007] Preferably, the supporting portion and the supporting portion of the plug are an integrated structure, the supporting portion is arranged on one side of the supporting portion and protrudes outward from the supporting portion; the outer surface of the supporting portion is provided with a limiting groove adapted to the limiting protrusion, and the limiting groove corresponds one-to-one to the limiting protrusion; the supporting portion is also provided with a groove adapted to the convex strip.

[0008] Preferably, the support portion is a complete structure with a circular through hole in the middle, and the support portion is made of a flexible material with a certain deformation ability.

[0009] Preferably, the support portion includes a plurality of support units, which surround and form a accommodating cavity and are fixedly connected to the supporting portion to form an integrated structure, and there are gaps between the plurality of support units; an outwardly protruding limit point is provided on the inner side wall of the support unit, and the limit points on the two opposing support units are at the same height.

[0010] Preferably, a spring is further included, wherein a plurality of springs are provided, and both ends of the springs are respectively in contact with limit points on the oppositely arranged supporting units.

[0011] Preferably, the support portion includes a plurality of support units, which surround a housing cavity, and there are gaps between the plurality of support units; a slot is provided on the support unit, and a retaining spring is installed in the slot.

[0012] The beneficial effect of the present invention is that compared with the prior art, the new pull rod provided by the present invention enhances the toughness of the pull rod by providing a plug and a gasket at the lower end of the rod body. More specifically, the plug is provided to fill the space inside the pull rod, so that outward support force can be provided during the stretching process, thereby preventing the pull rod from loosening, thereby extending the service life of the pull rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is an exploded view of the main structure of the utility model;

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

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

[0016] Figure 4-Figure 6 Schematic diagram of different plug structures of the present invention.

[0017] Reference numerals:

[0018] 1. Rod 2. Gasket 3. Plug 4. Next rod section

[0019] 11.Through hole 12.Ribbon

[0020] 21. Limiting protrusion 22. Slide groove 211. Lower protrusion 212. Upper protrusion

[0021] 31. Supporting part 32. Supporting part 33. Limiting groove 34. Groove 35. Limiting point

[0022] 36. Spring 37. Slot 38. Torsion spring DETAILED DESCRIPTION

[0023] In order to more clearly describe the present invention, the present invention is further described below in conjunction with the accompanying drawings. Of course, the protection scope of the present invention is not limited to this. Simple replacements that can be made by those skilled in the art without paying any creative work fall within the scope of protection of this application.

[0024] See also Figures 1 to 3 The utility model discloses a novel pull rod, comprising a plug 3, a rod body 1 and a gasket 2. The plug 3 and the gasket 2 are both arranged on the same side of the rod body 1. The rod body 1 is a hollow structure. The gasket 2 is arranged on the outside of the rod body 1 and is arranged in contact with the outer wall of the rod body 1. The plug 3 includes a supporting portion 31 and a supporting portion 32. The supporting portion 32 is arranged on the inside of the rod body 1 and is in contact with the inner wall of the rod body 1. The supporting portion 31 is in contact with the side wall of the rod body 1. In this embodiment, a gasket is provided on the outside of the rod body and is arranged between two sections of the pull rod, thereby providing friction for pulling, preventing the pull rod from extending on its own, and ensuring more convenient storage. The plug provides support from the inside of the rod body, providing the gasket with long-term stable external tension, so that the gasket forms long-term stable friction with the next section of the rod body.

[0025] To achieve the above objectives, the rod body 1 is provided with a ridge 12 inside, forming an integral structure with the rod body 1. The end of the rod body 1 near the plug 3 is provided with a plurality of through-holes 11, symmetrically arranged on the rod body 1. A gasket 2 is looped around the outside of the rod body 1, with a slide groove 22 provided on its outer surface and a plurality of position-limiting protrusions 21 provided on its inner surface, each corresponding one-to-one with the through-holes 11. The position-limiting protrusions 21 include an upper protrusion 212 and a lower protrusion 211, which are fixedly connected to form an integral structure. The lower protrusion 211 is provided with an inclined surface on the side near the plug 3. The upper protrusion 212 and the lower protrusion 211 have different horizontal lengths, thereby forming a receiving platform on the upper portion of the lower protrusion. In this embodiment, a convex strip is provided inside the rod body, which cooperates with the sliding groove on the surface of the gasket on the next section of the rod body 4, making it convenient for the rod body to be stretched or stored, and the gasket is located between the two sections of the pull rod, so that the pull rod generates friction when it is stretched or stored. Since the friction is directed inward, long-term use will cause the internal rod body to be squeezed, resulting in a decrease in friction. In order to avoid this situation, a plug is provided inside the rod body, and the plug is used to generate an outward holding force to protect the rod body; and the limiting protrusion inside the gasket is clamped with the plug through the through hole on the surface of the rod body. The inclined surface of the lower protrusion makes it more convenient to install the plug, and the presence of the receiving platform prevents the plug from falling off after installation.

[0026] The abutting portion 31 and supporting portion 32 of the plug 3 are integrally formed. The abutting portion 31 is positioned on one side of the supporting portion 32, protruding outward from the supporting portion 32. The outer surface of the supporting portion 32 is provided with a retaining groove 33 that mates with the retaining protrusion 21, with the retaining groove 33 corresponding one-to-one with the retaining protrusion 21. The supporting portion 32 is also provided with a groove 34 that mates with the ridge. In this embodiment, the retaining groove facilitates engagement with the retaining protrusion, ensuring that the plug does not fall off.

[0027] In practice, the plug can be configured in a variety of ways. The first approach involves a support portion that is a complete structure with a circular through-hole in the center, and is made of a flexible material with a certain degree of deformability. In this embodiment, the support portion is designed to be made of a flexible material, fully utilizing the inherent properties of the material to allow the plug to penetrate deeply into the rod during installation, thereby engaging with the gasket. Because the plug is made of a flexible material, it can generate external tension, providing stable friction in all positions of the pull rod. This ensures stable friction in all positions of the pull rod.

[0028] The second method is that the support portion 32 includes multiple support units, which surround and form a receiving cavity and are fixedly connected to the supporting portion 31 to form an integrated structure. There are gaps between the multiple support units. The inner side walls of the support units are provided with outwardly protruding limit points 35, and the limit points 35 on the two opposing support units are at the same height. It also includes a spring 36, and there are multiple springs 36. The two ends of the springs respectively contact the limit points 35 on the opposite supporting units. In this embodiment, the support portion is divided into four parts, four limit points are provided, and two springs are installed. When the plug is installed inside the rod body, it only needs to be squeezed. At this time, the spring is compressed, the distance between the support units is reduced, and after the limit groove of the support portion is engaged with the limit protrusion, the spring recovers its deformation and continuously provides stable external tension on both sides, ensuring that the pull rod can generate stable friction in any state.

[0029] The third method is that the support portion 32 includes multiple support units, and the multiple support units are surrounded to form a receiving cavity, and there are gaps between the multiple support units; a slot 37 is provided on the support unit, and a retaining spring 38 is installed in the slot. The principle adopted is similar to that of the second solution and will not be repeated here.

[0030] The above disclosures are only a few specific embodiments of the present invention, but the present invention is not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the scope of protection of the present invention.

Claims

1. A new type of pull rod, characterized in that: It includes a plug, a rod body and a gasket. The plug and the gasket are both arranged on the same side of the rod body. The rod body is a hollow structure. The gasket is arranged on the outside of the rod body and is attached to the outer wall of the rod body. The plug includes a supporting part and a supporting part. The supporting part is arranged on the inside of the rod body and is attached to the inner wall of the rod body. The supporting part is in contact with the side wall of the rod body.

2. The new pull rod according to claim 1, characterized in that: The rod body is provided with a convex strip inside, and the convex strip and the rod body are an integrated structure; the rod body is provided with a plurality of through holes at one end close to the plug, and the through holes are symmetrically arranged on the rod body.

3. The new pull rod according to claim 1, characterized in that: The gasket ring is sleeved on the outside of the rod body, the outer surface of the gasket is provided with a sliding groove, and the inner surface is provided with a plurality of limiting protrusions, and the limiting protrusions correspond to the through holes one by one; the limiting protrusions include an upper protrusion and a lower protrusion, and the upper protrusion and the lower protrusion are fixedly connected to form an integrated structure, and the side of the lower protrusion close to the plug is provided with an inclined surface, and the lateral lengths of the upper protrusion and the lower protrusion are different, thereby forming a receiving platform on the upper part of the lower protrusion.

4. The novel pull rod according to claim 1, characterized in that: The supporting part and the supporting part of the plug are an integrated structure, and the supporting part is arranged on one side of the supporting part and protrudes outward from the supporting part; the outer surface of the supporting part is provided with a limiting groove that is adapted to the limiting protrusion, and the limiting groove corresponds to the limiting protrusion one by one; the supporting part is also provided with a groove that is adapted to the convex strip.

5. The novel pull rod according to claim 4, characterized in that: The support portion is a complete structure with a circular through hole in the middle. The support portion is made of a flexible material with a certain deformation ability.

6. The novel pull rod according to claim 4, characterized in that: The support portion includes a plurality of support units, which surround and form a receiving cavity and are fixedly connected to the supporting portion to form an integrated structure. There are gaps between the plurality of support units. The inner side walls of the support units are provided with outwardly protruding limit points, and the limit points on the two opposing support units are at the same height.

7. The new pull rod according to claim 6, characterized in that: It also includes a spring, wherein a plurality of springs are provided, and both ends of the springs are respectively in contact with limit points on the oppositely arranged supporting units.

8. The new pull rod according to claim 4, characterized in that: The support portion includes a plurality of support units, which surround and form a receiving cavity, and there are gaps between the plurality of support units; a clamping groove is provided on the support unit, and a clamping spring is installed in the clamping groove.

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