Telescopic pull rod aluminum pipe

Abstract

The utility model belongs to the technical field of aluminum pipes, and particularly relates to a telescopic pull rod aluminum pipe which comprises an inner pipe body, an outer pipe body and an outer pipe body. A second cavity is formed in the outer pipe body, one end of the inner pipe body is located in the second cavity, and the inner pipe body and the outer pipe body form a telescopic structure; the positioning structure is arranged in the first cavity and is used for connecting the inner pipe body and the outer pipe body; wherein a mounting hole is formed in the end, away from the inner pipe body, of the outer pipe body. The telescopic pull rod aluminum pipe has the beneficial effects that due to the telescopic structure between the inner pipe body and the outer pipe body, the length of the aluminum pipe can be adjusted according to needs, great flexibility is provided, and the service life of the aluminum pipe is prolonged. And the system can adapt to different use scenes and requirements.

Description

Technical Field

[0001] The present application belongs to the technical field of aluminum tubes, and in particular relates to a telescopic pull rod aluminum tube. Background Art

[0002] Trolley cases are items that we often use in our daily lives. The trolleys of trolley cases are retractable and must have sufficient tensile and compressive strength. Existing trolleys are all aluminum tubes, but their cross-sections are square. Such a structure is not only not beautiful, but the trolleys are also easily damaged due to uneven force.

[0003] The patent with publication number CN207186248U discloses a special-shaped aluminum tube for use in a trolley case, comprising an aluminum tube, the cross section of the aluminum tube is special-shaped, the aluminum tube comprises a first straight portion and a second straight portion, the outer surface of the first straight portion is a plane, the outer surface of the second straight portion is a plane, and the outer surfaces of the first straight portion and the second straight portion are parallel; the aluminum tube also comprises a first special-shaped portion and a second special-shaped portion, the outer surface of the first special-shaped portion is a plane, and the outer surface of the second special-shaped portion is a non-plane. A groove is provided on the outer surface of the second straight portion, and the groove passes through the outer surface of the entire second straight portion. A first reinforcing rib and a second reinforcing rib are provided on the inner wall of the first straight portion, and the first reinforcing rib and the second reinforcing rib pass through the inner wall of the entire first straight portion.

[0004] The above patent enhances the overall strength by setting several reinforcing ribs, but there are still many problems in actual use. Since the application scenario is a pull rod, the adjustment of the length is also very important, and the aluminum tube of the above patent cannot be extended or adjusted in length, and needs to be improved. Utility Model Content

[0005] The purpose of this application is to provide a telescopic pull rod aluminum tube that can solve the above-mentioned problems.

[0006] The purpose of this application is to provide a telescopic pull rod aluminum tube, comprising:

[0007] An inner tube body, wherein a first cavity is arranged inside the inner tube body;

[0008] The outer tube body has a second cavity disposed therein, and one end of the inner tube body is located in the second cavity and forms a telescopic structure with the outer tube body;

[0009] A positioning structure, disposed in the first cavity and used to connect the inner tube body and the outer tube body;

[0010] Wherein, a mounting hole is arranged at one end of the outer tube body away from the inner tube body.

[0011] Using the above-mentioned telescopic pull rod aluminum tube, due to the telescopic structure between the inner tube body and the outer tube body, the length of this aluminum tube can be adjusted as needed, which provides great flexibility and enables it to adapt to different usage scenarios and needs. The positioning structure is arranged in the first cavity of the inner tube body, which is used to connect the inner tube body and the outer tube body to ensure the stability and safety of the two during the telescopic process and prevent the aluminum tube from accidentally sliding or falling off during use. A mounting hole is provided at one end of the outer tube body away from the inner tube body, which allows the aluminum tube to be easily connected and fixed to the luggage. In addition, since the aluminum tube is made of aluminum alloy, it has excellent corrosion resistance and can resist the erosion of various chemical substances, ensuring the service life and performance stability of the aluminum tube in harsh environments.

[0012] Furthermore, the positioning structure includes:

[0013] A positioning rod, disposed in the first cavity and slidably matched with the first cavity;

[0014] A positioning hole is provided on the outer wall of the inner tube body;

[0015] An adjustment hole is provided on the inner wall of the outer tube body;

[0016] A ball bearing is movably disposed in the positioning hole and adapted to the adjustment hole;

[0017] Among them, it also includes a limiting hole arranged on the positioning rod, the limiting hole is adapted to the ball, and a limiting protrusion for limiting the position of the ball is arranged on the limiting hole.

[0018] Through the sliding fit of the positioning rod in the first cavity and the movement of the ball between the positioning hole and the adjustment hole, the position of the inner tube body relative to the outer tube body can be adjusted, ensuring the stability and reliability of the aluminum tube at different lengths. The adaptation of the ball between the positioning hole and the adjustment hole, as well as the setting of the limiting hole and the limiting protrusion, together constitute a stable locking mechanism. When the ball is restricted in the limiting hole, the relative position between the inner tube body and the outer tube body is firmly locked, preventing the aluminum tube from accidentally sliding or deforming during use. The stable locking mechanism and precise adjustment ensure the safety of the aluminum tube during use. Users do not need to worry about the aluminum tube suddenly sliding or deforming, thereby avoiding potential safety hazards. In addition, the setting of the limiting protrusion can limit the position of the ball. When the positioning rod does not move, the ball can be restricted in the limiting hole to avoid unnecessary sliding between the inner tube body and the outer tube body.

[0019] Furthermore: a receiving hole is also provided on the positioning rod, the receiving hole is connected to the limiting hole and is used to receive the ball. When the positioning rod is pulled, the positioning rod moves upward and the ball moves into the receiving hole.

[0020] In the present application, when the inner tube body and the outer tube body are in a contracted state, the ball is located in the positioning hole and the adjustment hole. By pulling the positioning rod to move the positioning rod upward, the ball is disengaged from the limiting hole and passes through the limiting convex to enter the receiving hole. At this time, the inner tube body and the outer tube body are disengaged from the fastened state and are in a movable state. When the inner tube body and the outer tube body are in an active state, as the positioning rod gradually moves upward, the ball continues to move upward and moves to another adjustment hole. When one end of the ball cooperates with the adjustment hole, the positioning rod is moved downward a certain distance. At this time, the other end of the ball passes through the positioning hole and cooperates with the limiting hole, so that the inner tube body and the outer tube body are in a fastened state again.

[0021] Furthermore, a guide groove is provided on the inner tube body, and a limiting convex strip protruding inward is provided on the outer tube body, and the limiting convex strip is adapted to the guide groove.

[0022] The guide groove provides a clear moving path for the inner tube body, and the limiting convex strip ensures that the inner tube body always moves along this path during the extension and retraction process, thereby ensuring the stability of the inner tube body during the extension and retraction process, and also making the extension and retraction process of the aluminum tube smoother, reducing jamming and friction.

[0023] Furthermore, a protective ring is provided at the end of the outer tube body, and the protective ring wraps around the periphery of the end of the outer tube body.

[0024] The main function of the protective ring is to protect the end of the outer tube from impact, wear or scratches during use. This protection can extend the service life of the aluminum tube and ensure that its appearance is always in good condition. It also reduces the risk of users' hands or clothes being cut by the edge of the outer tube when operating or carrying the aluminum tube. Especially in certain application scenarios, such as suitcase handles, the protective ring can provide users with additional safety protection.

[0025] Furthermore, there are a plurality of adjustment holes, the plurality of adjustment holes are spaced apart from each other, and the distances between the adjustment holes are the same.

[0026] Due to the presence of multiple adjustment holes, users can accurately adjust the position of the inner tube relative to the outer tube as needed, so that the aluminum tube can meet the needs of different lengths. And because the distance between each adjustment hole is the same, when the inner tube cooperates with the adjustment hole through the ball, each position can obtain the same stability, which ensures that the aluminum tube can remain stable when adjusted to any length and is not easy to shake or deform.

[0027] The beneficial effects of this application are:

[0028] 1. Using the telescopic aluminum tube mentioned above, due to the telescopic structure between the inner tube body and the outer tube body, the length of this aluminum tube can be adjusted as needed, providing great flexibility, so that it can adapt to different usage scenarios and needs;

[0029] 2. The position of the inner tube body relative to the outer tube body can be adjusted by the sliding fit of the positioning rod in the first cavity and the movement of the ball between the positioning hole and the adjustment hole, ensuring the stability and reliability of the aluminum tube at different lengths. The fit of the ball between the positioning hole and the adjustment hole, as well as the setting of the limit hole and the limit protrusion, together constitute a stable locking mechanism, ensuring the safety of the aluminum tube during use. Users do not need to worry about the aluminum tube suddenly sliding or deforming, thus avoiding potential safety hazards;

[0030] 3. The guide groove provides a clear moving path for the inner tube body, and the limiting convex strip ensures that the inner tube body always moves along this path during the expansion and contraction process, ensuring the stability of the inner tube body during the expansion and contraction process, and also making the expansion and contraction process of the aluminum tube smoother, reducing jamming and friction. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of the utility model;

[0032] Figure 2 It is a top view of the utility model;

[0033] Figure 3 yes Figure 2 Sectional view in the AA direction;

[0034] Figure 4 yes Figure 3 A magnified view of middle;

[0035] Figure 5 yes Figure 3 Enlarged view of B.

[0036] The reference numerals in the figure are: 100, inner tube body; 120, first cavity; 200, outer tube body; 210, second cavity; 220, mounting hole; 300, positioning structure; 310, positioning rod; 320, positioning hole; 330, adjustment hole; 340, ball; 350, limiting hole; 360, limiting protrusion; 370, storage hole; 400, guide groove; 410, limiting convex strip; 500, protective ring. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0038] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0039] The telescopic pull rod aluminum tube provided in the embodiment of the present application is described in detail below through specific embodiments and application scenarios in conjunction with the accompanying drawings.

[0040] Embodiment 1:

[0041] like Figures 1 to 4 As shown, the embodiment of the present application provides a telescopic pull rod aluminum tube, comprising:

[0042] The inner tube body 100 has a first cavity 120 disposed therein;

[0043] The outer tube body 200 has a second cavity 210 disposed therein, and one end of the inner tube body 100 is located in the second cavity 210 and forms a telescopic structure with the outer tube body 200;

[0044] The positioning structure 300 is disposed in the first cavity 120 and is used to connect the inner tube body 100 and the outer tube body 200;

[0045] A mounting hole 220 is provided at one end of the outer tube body 200 away from the inner tube body 100 .

[0046] In some implementations of the embodiments of the present application, Figure 1 As shown, a telescopic pull rod aluminum tube as described above is used. Due to the telescopic structure between the inner tube body 100 and the outer tube body 200, the length of this aluminum tube can be adjusted as needed, which provides great flexibility and enables it to adapt to different usage scenarios and needs. The positioning structure 300 is arranged in the first cavity 120 of the inner tube body 100, and is used to connect the inner tube body 100 and the outer tube body 200 to ensure the stability and safety of the two during the telescopic process, and prevent the aluminum tube from accidentally sliding or falling off during use. A mounting hole 220 is provided at one end of the outer tube body 200 away from the inner tube body 100, so that the aluminum tube can be easily connected and fixed to the luggage. In addition, since the aluminum tube is made of aluminum alloy, it has excellent corrosion resistance and can resist the erosion of various chemical substances, ensuring the service life and performance stability of the aluminum tube in harsh environments.

[0047] In addition, a protective ring 500 is provided at the end of the outer tube body 200 , and the protective ring 500 wraps around the periphery of the end of the outer tube body 200 .

[0048] The main function of the protective ring 500 is to protect the end of the outer tube 200 from being hit, worn or scratched during use. This protection can extend the service life of the aluminum tube and ensure that its appearance is always in good condition. It also reduces the risk of the user's hands or clothes being cut by the edge of the outer tube 200 when operating or carrying the aluminum tube. In particular, in certain application scenarios, such as suitcase pull rods, the protective ring 500 can provide additional safety for users.

[0049] Embodiment 2:

[0050] An embodiment of the present application provides a telescopic pull rod aluminum tube. In addition to the above-mentioned technical features, the telescopic pull rod aluminum tube of the embodiment of the present application also includes the following technical features.

[0051] like Figure 4 and Figure 5 As shown, the positioning structure 300 includes:

[0052] A positioning rod 310, disposed in the first cavity 120 and slidably matched with the first cavity 120;

[0053] A positioning hole 320 is provided on the outer wall of the inner tube body 100;

[0054] The adjustment hole 330 is provided on the inner wall of the outer tube body 200;

[0055] The ball 340 is movably disposed in the positioning hole 320 and adapted to the adjustment hole 330;

[0056] The positioning rod 310 further includes a limiting hole 350 , which is matched with the ball 340 , and a limiting protrusion 360 for limiting the position of the ball 340 is provided on the limiting hole 350 .

[0057] In the embodiment of the present application, the position of the inner tube body 100 relative to the outer tube body 200 can be adjusted by the sliding fit of the positioning rod 310 in the first cavity 120 and the movement of the ball 340 between the positioning hole 320 and the adjustment hole 330, thereby ensuring the stability and reliability of the aluminum tube at different lengths. The fit of the ball 340 between the positioning hole 320 and the adjustment hole 330, as well as the setting of the limiting hole 350 and the limiting protrusion 360, together constitute a stable locking mechanism. When the ball 340 is restricted in the limiting hole 350, the relative position between the inner tube body 100 and the outer tube body 200 is firmly locked, thereby preventing the aluminum tube from accidentally sliding or deforming during use. The stable locking mechanism and precise adjustment ensure the safety of the aluminum tube during use, and the user does not need to worry about the aluminum tube suddenly sliding or deforming, thereby avoiding potential safety hazards. In addition, the setting of the limiting protrusion 360 can limit the position of the ball 340. When the positioning rod 310 does not move, the ball 340 can be confined in the limiting hole 350 to avoid unnecessary sliding between the inner tube body 100 and the outer tube body 200.

[0058] Furthermore, a plurality of adjustment holes 330 are provided, and the plurality of adjustment holes 330 are arranged at intervals up and down, and the distances between the respective adjustment holes 330 are the same.

[0059] Due to the presence of multiple adjustment holes 330, the user can accurately adjust the position of the inner tube body 100 relative to the outer tube body 200 as needed, so that the aluminum tube can meet the requirements of different lengths. And because the distances between the adjustment holes 330 are the same, when the inner tube body 100 cooperates with the adjustment holes 330 through the ball bearings 340, each position can obtain the same stability, which ensures that the aluminum tube can remain stable when adjusted to any length and is not easy to shake or deform.

[0060] Embodiment 3:

[0061] An embodiment of the present application provides a telescopic pull rod aluminum tube. In addition to the above-mentioned technical features, the telescopic pull rod aluminum tube of the embodiment of the present application also includes the following technical features.

[0062] like Figure 4 As shown, a receiving hole 370 is also provided on the positioning rod 310 , and the receiving hole 370 is connected to the limiting hole 350 and is used to receive the ball 340 . When the positioning rod 310 is pulled, the positioning rod 310 moves upward and moves the ball 340 into the receiving hole 370 .

[0063] In the embodiment of the present application, in the present application, when the inner tube body 100 and the outer tube body 200 are in a contracted state, the ball 340 is located in the positioning hole 320 and the adjustment hole 330. By pulling the positioning rod 310 to move the positioning rod 310 upward, the ball 340 is disengaged from the limiting hole 350 and passes through the limiting convex to enter the receiving hole 370. At this time, the inner tube body 100 and the outer tube body 200 are disengaged from the fastened state and are in an active state. When the inner tube body 100 and the outer tube body 200 are in an active state, as the positioning rod 310 gradually moves upward, the ball 340 continues to move upward and moves to another adjustment hole 330. When one end of the ball 340 cooperates with the adjustment hole 330, the positioning rod 310 is moved downward a certain distance. At this time, the other end of the ball 340 passes through the positioning hole 320 and cooperates with the limit hole 350, so that the inner tube body 100 and the outer tube body 200 are in a fastened state again. In addition, the positioning rod 310 will be connected with other components in the subsequent installation and pulled by other external components.

[0064] Embodiment 4:

[0065] An embodiment of the present application provides a telescopic pull rod aluminum tube. In addition to the above-mentioned technical features, the telescopic pull rod aluminum tube of the embodiment of the present application also includes the following technical features.

[0066] like Figure 1 As shown, a guide groove 400 is provided on the inner tube body 100 , and a limiting convex strip 410 protruding inward is provided on the outer tube body 200 , and the limiting convex strip 410 is adapted to the guide groove 400 .

[0067] In the embodiment of the present application, the guide groove 400 provides a clear moving path for the inner tube body 100, and the limiting ridge 410 ensures that the inner tube body 100 always moves along this path during the extension and retraction process, thereby ensuring the stability of the inner tube body 100 during the extension and retraction process, and also making the extension and retraction process of the aluminum tube smoother, reducing jamming and friction.

[0068] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0069] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A telescopic pull rod aluminum tube, characterized in that: include: An inner tube body (100) having a first cavity (120) disposed therein; The outer tube body (200) is provided with a second cavity (210) therein, and one end of the inner tube body (100) is located in the second cavity (210) and forms a telescopic structure with the outer tube body (200); A positioning structure (300) is disposed in the first cavity (120) and is used to connect the inner tube body (100) and the outer tube body (200); Wherein, a mounting hole (220) is provided at one end of the outer tube body (200) away from the inner tube body (100).

2. The telescopic pull rod aluminum tube according to claim 1, characterized in that: The positioning structure (300) comprises: A positioning rod (310) is disposed in the first cavity (120) and is slidably matched with the first cavity (120); A positioning hole (320) is provided on the outer wall of the inner tube body (100); An adjustment hole (330) is provided on the inner wall of the outer tube body (200); A ball (340) is movably disposed in the positioning hole (320) and adapted to the adjustment hole (330); It also includes a limiting hole (350) arranged on the positioning rod (310), the limiting hole (350) is adapted to the ball (340), and a limiting protrusion (360) is arranged on the limiting hole (350) to limit the position of the ball (340).

3. The telescopic pull rod aluminum tube according to claim 2, characterized in that: The positioning rod (310) is also provided with a receiving hole (370), which is connected to the limiting hole (350) and is used to receive the ball (340). When the positioning rod (310) is pulled, the positioning rod (310) moves upward and causes the ball (340) to move into the receiving hole (370).

4. The telescopic pull rod aluminum tube according to claim 1, characterized in that: The inner tube body (100) is provided with a guide groove (400), and the outer tube body (200) is provided with a limiting convex strip (410) protruding inwardly, and the limiting convex strip (410) is adapted to the guide groove (400).

5. The telescopic pull rod aluminum tube according to claim 1, characterized in that: The end of the outer tube body (200) is provided with a protective ring (500), and the protective ring (500) wraps around the periphery of the end of the outer tube body (200).

6. The telescopic pull rod aluminum tube according to claim 3, characterized in that: A plurality of the adjustment holes (330) are provided, and the plurality of adjustment holes (330) are arranged at intervals up and down, and the distances between the respective adjustment holes (330) are the same.

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