Pull rod with novel gasket

Abstract

The pull rod with the novel gasket comprises the gasket, a pull rod body and a pull rod sleeve, the gasket is arranged at the bottom of the pull rod body, and the pull rod sleeve is arranged at the upper end of the pull rod body and fixedly arranged on the inner wall of the pull rod body. A first sliding groove is formed in the surface of the gasket, a second sliding groove is formed in the surface of the pull rod, and when the first sliding groove is attached to the second sliding groove, the gasket is clamped on the outer surface of the pull rod. The utility model has the advantages of simple structure, convenience in installation and operation and good positioning effect, smaller force is used for pulling out the inner pipe and the outer pipe, and larger acting force is used during storage, so that larger supporting force is provided while the stretching is convenient.

Description

Technical Field

[0001] This utility model relates to the field of equipment assembly, and in particular to a tie rod with a novel type of gasket. 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 and retractable design, easy storage, and portability. They can be extended to the required length when in use to meet usage requirements, and can be retracted when not in use to save space, making them convenient to carry and store.

[0003] However, the positioning of existing telescopic poles has many problems. For example, multiple gaskets are attached between the two movable tubes of the telescopic pole. The movable tube located inside the gaskets is the inner tube, and the movable tube located outside the gaskets is the outer tube. Currently, the gaskets used in the market only serve as a limit. The force required to extend or retract the telescopic pole is consistent. However, in actual use, if a smaller force is needed to extend it, the supporting force provided is smaller; if a heavier item needs to be supported, a larger force is required when extending it. Therefore, how to solve this problem is the dilemma we currently face. Summary of the Invention

[0004] To address the shortcomings of the aforementioned technologies, this utility model provides a pull rod with a novel type of gasket. It has a simple structure, is easy to install and operate, has a good positioning effect, requires less force to pull out the inner and outer tubes, and requires more force to retract, thus facilitating stretching while providing greater support.

[0005] To achieve the above objectives, this utility model provides a pull rod with a novel type of washer, including a washer, a pull rod, and a pull rod sleeve. The washer is disposed at the bottom of the pull rod, and the pull rod sleeve is disposed at the upper end of the pull rod and fixedly disposed on the inner wall of the pull rod. The surface of the washer is provided with a first sliding groove, and the surface of the pull rod is provided with a second sliding groove. When the first sliding groove and the second sliding groove are in contact, the washer is engaged with the outer surface of the pull rod.

[0006] Preferably, the gasket is provided in multiple pieces, which are arranged around the outside of the pull rod, and the lower edge of the gasket is provided with an abutment strip that is adapted to the second pull rod.

[0007] Preferably, the inner surface of the gasket is provided with a limiting block, and the outer surface is provided with the first sliding groove. The first sliding groove is located between the bosses and is arranged along the axial direction of the gasket. The first sliding groove includes an integrally formed upper sliding groove and a lower sliding groove. Both the upper sliding groove and the lower sliding groove are provided with grooves and protrusions, and the grooves and protrusions in the two sliding grooves are staggered.

[0008] Preferably, the outer surface of the gasket is provided with a boss and a friction block, and multiple bosses and friction blocks are provided. The friction blocks are symmetrically arranged on the upper and lower sides of the gasket, the boss is located in the middle of the gasket, and the protrusion height of the friction block is lower than that of the boss.

[0009] Preferably, the upper and lower sides of the boss are both inclined surfaces, and the inclination angles of the two inclined surfaces are different.

[0010] Preferably, the pull rod is provided with a second slide groove that matches the first slide groove. The second slide groove has two sections, which are symmetrically arranged along the axial direction of the pull rod.

[0011] Preferably, the pull rod is also provided with limiting holes, and multiple limiting holes are provided, which are distributed in pairs at the upper and lower ends of the pull rod.

[0012] Preferably, the top of the pull rod sleeve is provided with an outer extension edge that matches the first pull rod, and the side of the pull rod sleeve away from the outer extension edge is provided with a wedge block that matches the limiting hole, and the side of the wedge block away from the outer extension edge is provided with an inclined surface.

[0013] Preferably, the pull rod sleeve is provided with a third slide groove that matches the second slide groove. The third slide groove is also provided with multiple protrusions and grooves, and a notch is provided on the side away from the outer edge.

[0014] The beneficial effects of this utility model are as follows: Compared with the prior art, the pull rod with a novel gasket provided by this utility model ensures that different forces can be applied during stretching and retraction by setting a gasket with a special structure between the two sections of the pull rod. More specifically, by using the boss on the outer surface of the gasket, the inclined surfaces on the upper and lower sides of the boss are set at different angles, thereby ensuring that the frictional force is different during stretching and retraction. At the same time, due to the presence of the gasket, the gap between the two pull rods can be effectively filled, ensuring a more stable connection between the two. In addition, since both the gasket and the pull rod are provided with grooves, the two grooves fit together during installation, thereby achieving positioning installation and improving installation efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the usage state of this utility model;

[0016] Figure 2 This is a schematic diagram of the main structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the gasket structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the inner wall of the gasket of this utility model;

[0019] Figure 5 This is a schematic diagram showing the angle of the boss of the gasket of this utility model;

[0020] Figure 6 This is a schematic diagram of the tie rod sleeve structure of this utility model;

[0021] Figure 7 This is a schematic diagram of the tie rod structure of this utility model.

[0022] Description of main components:

[0023] 1. Pull rod 2. Washer 3. Pull rod sleeve

[0024] 11. First pull rod 12. Second pull rod 13. Lower limit hole 14. Upper limit hole

[0025] 15. Second groove; 21. Boss; 22. First groove; 23. Raised strip; 24. Groove.

[0026] 25. Limiting block 26. Abutment strip 27. Friction block 31. Outer edge 32. Wedge block

[0027] 33. Third groove 34. Notch 221. Upper groove 222. Lower groove. Detailed Implementation

[0028] 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.

[0029] Please see Figures 1 to 7 This utility model provides a pull rod with a novel type of washer, including a washer 2, a pull rod 1, and a pull rod sleeve 3. The washer 2 is located at the bottom of the pull rod 1 and engages with the outer surface of the pull rod 1. The pull rod sleeve 3 is located at the upper end of the pull rod 1 and is fixedly mounted on the inner wall of the pull rod 1. The surface of the washer 2 has a first sliding groove 22, and the surface of the pull rod 1 has a second sliding groove 15. When the first sliding groove 22 and the second sliding groove 15 are engaged, the washer 2 is engaged with the outer surface of the pull rod 1. In this embodiment, both the washer and the pull rod have sliding grooves, and the cooperation between the sliding grooves achieves rapid positioning, which effectively improves the installation efficiency. In addition, due to the presence of the sliding grooves, the washer will not shift left or right during installation or use, which further improves the stability of the overall structure.

[0030] To achieve the above objectives, multiple gaskets 2 are provided, which are arranged around the outside of the second pull rod 12. The lower edge of each gasket 2 has an abutment strip 26 adapted to the second pull rod 12. The inner surface of the gasket 2 has a limiting block 25, and the outer surface has a first sliding groove 22. The first sliding groove 22 is located between the bosses 21 and is arranged along the axial direction of the gasket 2. The first sliding groove 22 includes an integrally formed upper sliding groove 221 and a lower sliding groove 222. Both the upper sliding groove 221 and the lower sliding groove 222 have grooves 24 and protrusions 23, and the grooves 24 and protrusions 23 within the two grooves are staggered. In this embodiment, the abutment strip and limiting block on the gasket facilitate the connection between the gasket and the second pull rod, ensuring that the gasket does not detach.

[0031] The outer surface of the gasket 2 is provided with a boss 21 and a friction block 27. Multiple bosses 21 and friction blocks 27 are provided, with the friction blocks 27 symmetrically arranged on the upper and lower sides of the gasket 2. The boss 21 is located in the middle of the gasket 2, and the protrusion height of the friction block 27 is lower than that of the boss 21. In practical implementation, a friction block is placed next to the boss, serving as a transition. During loading, the pull rod first contacts the friction block and then the boss, thus making installation smoother.

[0032] The boss 21 has a sloping structure on both its upper and lower sides, and the two sloping angles are different. In the specific implementation, the pull rod includes a first pull rod 11 and a second pull rod 12. A washer is provided between the first pull rod 11 and the second pull rod 12 to increase the friction, so that the pull rod can form a stable support after being pulled out. The surface of the washer is provided with a boss, and the presence of the boss further increases the friction. The sloping structure on the upper and lower sides of the boss ensures smoother stretching or retraction, and the different angles on both sides mean that the force required for stretching and retraction is different, thus better meeting the usage requirements. In a specific implementation, the included angle of the lower inclined surface of the boss is 145 degrees, and the included angle of the upper inclined surface of the boss is 160 degrees. According to existing common knowledge, the formula for friction with an inclined surface is f=μGconα. Therefore, in this embodiment, the force required to stretch the rod is less than the force required to retract the rod, making it easier to stretch. At the same time, since a greater force is required when retracting, it can support heavier clamped objects and meet different user needs.

[0033] The pull rod 1 is provided with a second slide groove 15 that matches the first slide groove 22. Two second slide grooves 15 are provided, symmetrically arranged along the axial direction of the pull rod 1. The pull rod 1 is also provided with multiple limiting holes, distributed in pairs at the upper and lower ends of the pull rod. In this embodiment, the upper limiting hole 14 of the pull rod engages with the pull rod sleeve, fixing the pull rod sleeve inside the pull rod and preventing it from detaching. The lower limiting hole 13 of the pull rod cooperates with the limiting block of the gasket, thereby preventing the gasket from shifting. The second slide grooves cooperate with each other, making positioning easier during installation and speeding up the assembly process.

[0034] The top of the pull rod sleeve 3 is provided with an outer extension edge 31 that matches the first pull rod. The pull rod sleeve 3 is provided with a wedge block 32 that matches the limiting hole on the side away from the outer extension edge 31. The wedge block 32 is provided with a slope on the side away from the outer extension edge 31. The pull rod sleeve 3 is provided with a third slide groove 33 that matches the second slide groove 15. The third slide groove 33 is also provided with multiple protrusions and grooves, and a notch is provided on the side away from the outer extension edge. In this embodiment, the wedge block allows it to engage with the upper limit hole 14 to fix the pull rod sleeve. The inclined structure at the bottom of the wedge block facilitates installation. In the specific process, the first, second, and third sliding grooves are mutually compatible, making the entire pull rod smoother when retracted or extended, while achieving a locking effect and preventing lateral displacement during stretching or retraction. The protrusions and grooves in the third sliding groove are misaligned with the protrusions and grooves in the lower sliding groove of the first sliding groove, thereby achieving a limiting effect and restricting the movement stroke of the pad. The pull rod sleeve is generally made of plastic. When the pull rod sleeve is installed inside the pull rod, it needs to be squeezed. To prevent excessive squeezing from damaging the pull rod sleeve, a notch is specially provided to protect the pull rod sleeve during the loading process.

[0035] 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 novel type of washer, characterized in that, The device includes a gasket, a pull rod, and a pull rod sleeve. The gasket is located at the bottom of the pull rod, and the pull rod sleeve is located at the top of the pull rod and is fixedly mounted on the inner wall of the pull rod. The surface of the gasket is provided with a first sliding groove, and the surface of the pull rod is provided with a second sliding groove. When the first sliding groove and the second sliding groove are in contact, the gasket is engaged with the outer surface of the pull rod.

2. The tie rod with a novel washer according to claim 1, characterized in that, The gasket is provided in multiple pieces, which are arranged around the outside of the pull rod. The lower edge of the gasket is provided with an abutment strip that is adapted to the second pull rod.

3. The tie rod with a novel washer according to claim 1, characterized in that, The inner surface of the gasket is provided with a limiting block, and the outer surface is provided with the first sliding groove. The first sliding groove is located between the bosses and is arranged along the axial direction of the gasket. The first sliding groove includes an upper sliding groove and a lower sliding groove integrally formed. Both the upper sliding groove and the lower sliding groove are provided with grooves and ridges, and the grooves and ridges in the two sliding grooves are staggered.

4. The tie rod with a novel washer according to claim 1, characterized in that, The outer surface of the gasket is provided with a boss and a friction block. There are multiple bosses and friction blocks. The friction blocks are symmetrically arranged on the upper and lower sides of the gasket. The boss is located in the middle of the gasket. The protrusion height of the friction block is lower than that of the boss.

5. The tie rod with a novel washer according to claim 4, characterized in that, The boss has sloping surfaces on both the top and bottom, and the two sloping surfaces have different inclination angles.

6. The tie rod with a novel washer according to claim 1, characterized in that, The pull rod is provided with a second slide groove that matches the first slide groove. There are two second slide grooves, which are symmetrically arranged along the axis of the pull rod.

7. The tie rod with a novel washer according to claim 1, characterized in that, The pull rod is also provided with limiting holes, and there are multiple limiting holes, which are distributed in pairs at the upper and lower ends of the pull rod.

8. The tie rod with a novel washer according to claim 1, characterized in that, The top of the pull rod sleeve is provided with an outer extension edge that matches the first pull rod. The side of the pull rod sleeve away from the outer extension edge is provided with a wedge block that matches the limiting hole. The side of the wedge block away from the outer extension edge is provided with an inclined surface.

9. The tie rod with a novel washer according to claim 1, characterized in that, The pull rod sleeve is provided with a third slide groove that matches the second slide groove. The third slide groove is also provided with multiple protrusions and grooves, and a notch is provided on the side away from the outer edge.

Images