A luggage trolley anti-loose pull rod

Abstract

This utility model discloses a luggage anti-loosening pull rod, including a fixed tube, a first telescopic tube, and a second telescopic tube. A fixed seat is sleeved at the end of the fixed tube, and the fixed seat is installed in the luggage. The first telescopic tube is inserted into the fixed tube, and a limit cap is sleeved at the end of the first telescopic tube. The first telescopic tube is sleeved with the fixed cap, and the second telescopic tube is inserted into the first telescopic tube. A reinforcing cap is sleeved at the end of the second telescopic tube, and the reinforcing cap slides with the first telescopic tube. The fixed seat and the limit cap cooperate to restrict the swaying of the first telescopic tube, and the fixed cap and the reinforcing cap cooperate to restrict the swaying of the second telescopic tube, forming a two-level precise limit. At the same time, the plug box of the mounting seat provides double positioning for the fixed tube, the rectangular ring of the fixed cap increases friction, and the U-shaped bar of the reinforcing cap expands the contact area. The multiple structures work together to offset the gap between the telescopic tubes. Even if the pull rod is fully extended or slight wear occurs after long-term use, it can still maintain a tight connection, effectively preventing loosening and improving the quality of the pull rod.

Description

Technical Field

[0001] This utility model relates to the field of luggage technology, specifically to a luggage anti-loosening pull rod. Background Technology

[0002] In daily life and travel, suitcases are a common tool for carrying belongings. Most existing suitcase handles have a two- or three-section telescopic structure. When the handle is fully extended, it can become loose due to its length. The longer the suitcase is used, the more wear and tear the handle will develop, leading to increased looseness. When using the handle to pull the suitcase, it may bend, affecting the suitcase's overall quality. Utility Model Content

[0003] The purpose of this utility model is to provide a luggage anti-loosening pull rod to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a luggage anti-loosening pull rod, including a fixing tube, with a fixing seat sleeved at the end of the fixing tube, and the fixing seat installed on the luggage to connect the fixing tube with the luggage, thereby achieving a stable connection between the pull rod and the luggage. The installation method is simple and the connection is highly reliable, providing a stable foundation for the entire pull rod structure.

[0005] The first telescopic tube is inserted into the inside of the fixed tube. A limit cap is sleeved on the end of the first telescopic tube. The limit cap is slidably connected to the fixed tube. The fixed seat and the limit cap restrict the shaking of the first telescopic tube. The first telescopic tube is sleeved with the fixed cap to improve the stability and smoothness of the rod during the extension and retraction process, avoid problems such as deviation and shaking during use, and enhance the user experience.

[0006] The second telescopic tube is inserted into the first telescopic tube and adopts a nested insertion design to realize the telescopic function of the pull rod, so as to meet the user's needs for different lifting heights. The end of the second telescopic tube is fitted with a reinforcing cap, which slides with the first telescopic tube. The fixing cap and the reinforcing cap restrict the shaking of the second telescopic tube, making the entire pull rod structure stable and with a long service life.

[0007] Furthermore, a mounting base is installed at the end of the fixing tube. The mounting base has several fixing holes, which are connected to the suitcase by screws. The screw connection method has strong fastening and can effectively prevent the pull rod from detaching from the suitcase during use, thereby improving the load-bearing capacity and durability of the connection structure. The multi-fixing hole design can distribute the force on the pull rod, avoid damage caused by concentrated force at a single connection point, and extend the overall service life of the pull rod.

[0008] Furthermore, the mounting base has two integrally formed plug boxes, and the fixing tube is located inside the plug boxes and fixed with screws. It has high mechanical strength, is not easy to deform or break, and can provide a stable installation space for the fixing tube, preventing the fixing tube from rotating or shifting during use, and ensuring the precise extension and retraction direction of the pull rod.

[0009] Furthermore, a handle is inserted into the end of the second telescopic tube. The handle is bent and its curvature matches that of the suitcase, conforming to ergonomic design. This reduces the concentration of force on the hand when lifting and improves grip comfort.

[0010] Furthermore, the surface of the limiting cap is provided with three rectangular rings, and adjacent rectangular rings form a rectangular groove. The rectangular ring structure can enhance the structural strength of the limiting cap, prevent the limiting cap from deforming during long-term use, and extend its service life.

[0011] Furthermore, the surface of the reinforcing cap is provided with a bar, which is U-shaped and has an oil groove to reduce the sliding friction between the reinforcing cap and the first telescopic tube, making the extension and retraction of the rod smoother.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] (1) The fixed seat and the limiting cap work together to limit the shaking of the first telescopic tube, and the fixed cap and the reinforcing cap work together to limit the shaking of the second telescopic tube, forming two levels of precise limiting. At the same time, the plug box of the mounting seat provides double positioning for the fixed tube, the rectangular ring of the fixed cap increases friction, and the U-shaped bar of the reinforcing cap expands the contact area. The multiple structures work together to offset the gap between the telescopic tubes. Even if the pull rod is fully pulled out or slight wear occurs after long-term use, it can still maintain a tight connection, effectively avoiding loosening and improving the quality of the pull rod.

[0014] (2) The rectangular groove between adjacent rectangular rings can store lubricating grease, and the oil groove of the bar can also store lubricating grease, reducing the friction between the limit cap and the fixed tube, and between the reinforcing cap and the first telescopic tube, ensuring that the pull rod can still be smoothly stretched and retracted after long-term use. Attached Figure Description

[0015] Figure 1 This is a perspective view of the present utility model;

[0016] Figure 2 This is a front view of the present invention;

[0017] Figure 3 This is a rear view of the present invention;

[0018] Figure 4 This is a schematic diagram showing the disassembled parts of this utility model;

[0019] Figure 5 This is a schematic diagram of the structure of the reinforcing cap of this utility model;

[0020] Figure 6 This is a schematic diagram of the assembly base of this utility model.

[0021] In the diagram: 1. Assembly base; 2. Fixing tube; 3. Fixing base; 4. First telescopic tube; 5. Second telescopic tube; 6. Handle; 7. Fixing hole; 8. Limiting cap; 9. Rectangular ring; 10. Reinforcing cap; 11. Oil tank; 13. Connector box; 14. Fixing cap. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example:

[0024] Please see Figure 1-6 This utility model provides a technical solution: a luggage anti-loosening pull rod, including a fixing tube 2, and a fixing seat 3 sleeved at the end of the fixing tube 2. The fixing seat 3 has holes, and screws can be used to install the fixing seat 3 into the luggage, so that the fixing tube 2 is connected to the luggage, realizing the assembly of the three-section pull rod with the luggage;

[0025] The first telescopic tube 4 is inserted into the fixed tube 2. The end of the first telescopic tube 4 is fitted with a limit cap 8. The limit cap 8 is slidably connected to the fixed tube 2. When the limit cap 8 contacts the fixed tube 2, it can restrict the loosening of one end of the first telescopic tube 4, ensuring that the fixed seat 3 and the limit cap 8 stably restrict the shaking of the first telescopic tube 4. When the first telescopic tube 4 is pulled out, the looseness of the first telescopic tube 4 is reduced. The fixed seat 3 and the limit cap 8 also prevent the first telescopic tube 4 and the fixed tube 2 from wearing each other. The first telescopic tube 4 is fitted with a fixed cap 14.

[0026] The second telescopic tube 5 is inserted into the first telescopic tube 4. A reinforcing cap 10 is sleeved on the end of the second telescopic tube 5. The reinforcing cap 10 is slidably connected to the first telescopic tube 4. The fixing cap 14 and the reinforcing cap 10 restrict the shaking of the second telescopic tube 5. The fixing cap 14 and the reinforcing cap 10 prevent the second telescopic tube 5 and the first telescopic tube 4 from wearing each other.

[0027] In this embodiment, as Figure 1 As shown, the end of the fixing tube 2 is equipped with a mounting base 1, which has several fixing holes 7. The fixing holes 7 are connected to the suitcase by screws. With the fixing base 3, the fixing tube 2 can be firmly installed into the suitcase. When the suitcase is fully loaded, the entire pull rod can stably pull the suitcase.

[0028] In this embodiment, as Figure 1 and Figure 6 As shown, the mounting base 1 has two integrally formed plug boxes 13. The integral structure reduces the gap between parts, reduces the risk of shaking, simplifies the assembly process, and improves production efficiency. The fixing tube 2 is located inside the plug box 13 and is fixed with screws. The mounting base 1 is made of plastic, which will not wear down the aluminum alloy fixing tube 2.

[0029] In this embodiment, as Figure 1 and Figure 2 As shown, a handle 6 is inserted into the end of the second telescopic tube 5. The handle 6 is bent and the bending arc of the handle 6 matches the suitcase. It is easy to assemble and the connection is firm, making it convenient for users to lift the suitcase. The bending arc is adapted to the shape of the suitcase, which can avoid interference between the handle 6 and the surface of the suitcase when the pull rod is retracted, making the structure more compact and improving the overall aesthetics of the suitcase.

[0030] In this embodiment, as Figure 4 As shown, the surface of the limiting cap 8 is provided with three rectangular rings 9, and adjacent rectangular rings 9 form a rectangular groove. The inside of the rectangular groove can store paste-like lubricating oil, which reduces the movement resistance of the limiting cap 8 inside the fixed tube 2, makes the stretching and contraction smooth and long-lasting, reduces the wear of the rectangular rings 9, controls the gap between the rectangular rings 9 and the fixed tube 2 to prevent it from becoming too large, and makes the first telescopic tube 4 less likely to shake.

[0031] In this embodiment, as Figure 5 As shown, the surface of the reinforcing cap 10 is provided with a bar, which is U-shaped and has an oil groove 11. The oil groove 11 stores a paste-like lubricating oil. The reinforcing cap 10 moves smoothly in the first telescopic tube 4, and the gap between the control bar and the first telescopic tube 4 is not easily changed, and the second telescopic tube 5 is not easily shaken.

[0032] Specifically, in use, the fixed seat 3 is installed on the suitcase through the mounting seat 1 and the fixed seat 3. The pull rod type is to pull the handle 6 to drive the first telescopic tube 4 and the second telescopic tube 5 to move.

[0033] The first telescopic tube 4 drives the limiting cap 8 to move in the fixed tube 2. The limiting cap 8 and the fixed seat 3 can double limit the first telescopic tube 4, making the first telescopic tube 4 less prone to shaking in the fixed tube 2. After the first telescopic tube 4 is pulled out, it is not easy to loosen. When moving the suitcase, the first telescopic tube 4 is also less likely to make abnormal noise.

[0034] After the second telescopic tube 5 is pulled out, the second telescopic tube 5 drives the reinforcing cap 10 to slide inside the first telescopic tube 4. At this time, the fixing cap 14 and the reinforcing cap 10 provide double restraint for the second telescopic tube 5 to prevent the second telescopic tube 5 from shaking. When dragging the suitcase, neither the second telescopic tube 5 nor the first telescopic tube 4 is easy to bend due to loosening. The overall structure of the pull rod is stable, the service life is longer, and the pull rod is less likely to have quality problems.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A luggage anti-loosening pull rod, characterized in that, include: A fixing tube (2) is provided, and a fixing seat (3) is sleeved at the end of the fixing tube (2). The fixing seat (3) is installed on the suitcase so that the fixing tube (2) can be connected to the suitcase. The first telescopic tube (4) is inserted into the fixed tube (2). The end of the first telescopic tube (4) is fitted with a limit cap (8). The limit cap (8) slides with the fixed tube (2). The fixed seat (3) and the limit cap (8) restrict the first telescopic tube (4) from shaking. The first telescopic tube (4) is fitted with a fixed cap (14). The second telescopic tube (5) is inserted into the first telescopic tube (4). A reinforcing cap (10) is sleeved on the end of the second telescopic tube (5). The reinforcing cap (10) slides with the first telescopic tube (4). The fixing cap (14) and the reinforcing cap (10) restrict the second telescopic tube (5) from shaking.

2. The anti-loosening pull rod for a suitcase according to claim 1, characterized in that: The end of the fixing tube (2) is equipped with a mounting base (1), which has several fixing holes (7) and is connected to the suitcase by screws.

3. The anti-loosening pull rod for a suitcase according to claim 2, characterized in that: The mounting base (1) has two integrally formed plug boxes (13), and the fixing tube (2) is located inside the plug box (13) and fixed with screws.

4. The anti-loosening pull rod for a suitcase according to claim 1, characterized in that: The second telescopic tube (5) has a handle (6) inserted at its end. The handle (6) is bent and the bending arc of the handle (6) matches that of the suitcase.

5. A luggage anti-loosening pull rod according to claim 1, characterized in that: The limiting cap (8) has three rectangular rings (9) on its surface, and adjacent rectangular rings (9) form a rectangular groove.

6. The anti-loosening pull rod for a suitcase according to claim 1, characterized in that: The surface of the reinforcing cap (10) is provided with a bar, which is U-shaped and has an oil groove (11).

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