Telescopic pull rod structure of luggage

Abstract

The telescopic pull rod structure comprises a supporting main rod, the interior of the supporting main rod is designed to be of a hollow structure, the interior of the supporting main rod is connected with a first-stage pull rod in a sliding and telescopic mode, main rod positioning holes are formed in the outer walls of the top end and the tail end of the supporting main rod, and the interior of the first-stage pull rod is arranged to be of a hollow structure. A secondary drawing rod is connected into the primary drawing rod in a sliding and telescopic mode, the supporting main rod, the primary drawing rod and the secondary drawing rod are made of aluminum alloy materials, the tail end of the primary drawing rod is fixedly sleeved with a primary limiting ring, and the tail end of the secondary drawing rod is fixedly sleeved with a secondary limiting ring. Compared with the prior art, the anti-impact and anti-deformation effects are good, the phenomena of deformation and bending of the rod body after long-time use can be effectively avoided, the overall service life of the rod body is prolonged, the overall effect of the rod body is improved, the aluminum alloy material has the characteristics of being light in use while having high structural strength, the weight is light in the overall use process, and the service life of the rod body is prolonged. And the overall weight of the rod body can be effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of luggage drawer rods, in particular to a luggage telescopic drawer rod structure. Background Art

[0002] Luggage is a general term for bags, and is a general term for various bags used to carry things, including general shopping bags, handbags, clutches, wallets, backpacks, shoulder bags, shoulder bags, waist bags and various trolley cases;

[0003] Trolley suitcases are a type of luggage. Trolley suitcases refer to suitcases with a trolley and wheels. They are widely used because of their convenience. At the same time, trolley suitcases are divided into single-tube trolleys and double-tube trolleys because of the trolley on the suitcase. The tubes of the trolleys are also divided into square tubes and round tubes, which are convenient for dragging while walking and greatly reduce the burden. Trolley suitcases can be carried by hand or dragged. The wheels of the trolley suitcases we usually use are basically located at the bottom of the suitcase, but modern people have designed a new type of trolley suitcase, which is designed to be cylindrical in shape, and the wheels are completely wrapped on the outside of the suitcase. This roller design allows this trolley suitcase to better adapt to different terrains. For example, you can easily go up and down stairs by directly pulling the suitcase.

[0004] Existing luggage bags require a telescopic drawer rod when in use. However, the existing telescopic drawer rod has a low structural strength and is prone to deformation and bending after long-term use. After deformation and bending, the drawer rod is easy to fall out of the rod body, thereby affecting the use effect of the luggage. Therefore, the utility model proposes a telescopic drawer rod structure for luggage. Utility Model Content

[0005] The purpose of the utility model is to provide a luggage telescopic pull rod structure to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a telescopic pull rod structure for luggage, comprising a supporting main rod, the interior of the supporting main rod is a hollow structure design, a first-level pull rod is slidably and telescopically connected inside the supporting main rod, main rod positioning holes are provided on the top and tail end outer walls of the supporting main rod, the first-level pull rod adopts a hollow structure setting inside, a second-level pull rod is slidably and telescopically connected inside the first-level pull rod, the supporting main rod, the first-level pull rod and the second-level pull rod are made of aluminum alloy material, the tail end external fixing sleeve of the first-level pull rod is provided with a first-level limiting ring, and the tail end external fixing sleeve of the second-level pull rod is provided with a second-level limiting ring.

[0007] Preferably, a plurality of height positioning holes are provided on the side wall of the first-level pulling rod, and the plurality of height positioning holes are linearly distributed at equal intervals.

[0008] Preferably, the aperture sizes of the plurality of height positioning holes are the same.

[0009] Preferably, a first-level spring knob is fixedly installed at the tail end of the first-level pulling rod, and the first-level spring knob and the main rod positioning hole are designed as an adaptive structure.

[0010] Preferably, a secondary spring knob is fixedly mounted on the tail end of the secondary pulling rod, and the secondary spring knob and the height positioning hole are designed as an adaptive structure.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] The utility model can effectively improve the overall structural strength of the rod body assembly consisting of the supporting main rod, the primary pull rod and the secondary pull rod, so that it has good impact resistance and deformation resistance, and can effectively prevent the rod body from being deformed and bent after long-term use, thereby increasing the overall service life and effect of the rod body. In addition, the aluminum alloy material has the characteristics of high structural strength and light use. The overall weight is light when used, which can effectively reduce the overall weight of the rod body, has the technical characteristics of lightweight use, and is more practical.

[0013] The first-stage pull rod has a first-stage limiting ring on its outer fixing sleeve at the tail end, which can limit the tail end of the first-stage pull rod, thereby effectively preventing the first-stage pull rod from falling out from the inside of the supporting main rod, having a good anti-falling effect and ensuring the normal use of the pull rod;

[0014] In order to prevent the secondary pull-out rod from falling out from the first pull-out rod, a secondary limiting ring is provided on the external fixed sleeve at the tail end of the secondary pull-out rod, which has the same effect as the above-mentioned use. The secondary limiting ring can limit the tail end of the secondary pull-out rod, thereby effectively preventing the secondary pull-out rod from falling out from the first pull-out rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the telescopic pull rod according to an embodiment of the present utility model;

[0016] Figure 2 This is a schematic diagram of the three-dimensional structure of the tail end of the first-stage pulling rod according to an embodiment of the present utility model;

[0017] Figure 3 This is a schematic diagram of the three-dimensional structure of the tail end of the secondary pull rod according to an embodiment of the present utility model.

[0018] In the figure: 1. Support main rod; 2. Main rod positioning hole; 3. First-level pull rod; 4. Height positioning hole; 5. First-level spring knob; 6. First-level limiting ring; 7. Second-level pull rod; 8. Second-level spring knob; 9. Second-level limiting ring. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," "the other end," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc. should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0022] See also Figure 1-3The utility model provides an embodiment: a luggage telescopic pull rod structure, including a supporting main rod 1, the interior of the supporting main rod 1 is a hollow structure design, the supporting main rod 1 is internally slidably and telescopically connected to a first-level pulling rod 3, the first-level pulling rod 3 and the supporting main rod 1 can be used as a first-level pulling rod telescopic structure, a main rod positioning hole 2 is opened on the top and tail end outer walls of the supporting main rod 1, the main rod positioning hole 2 is used for positioning the first-level pulling rod 3 after it is extended, the first-level pulling rod 3 is internally hollow, the first-level pulling rod 3 is internally slidably and telescopically connected to a second-level pulling rod 7, the first-level pulling rod 3 and the second-level pulling rod 7 are connected. The second stage telescopic structure of the rod body can be used as the second stage telescopic structure of the rod body. The supporting main rod 1, the first stage pulling rod 3 and the second stage pulling rod 7 are made of aluminum alloy. This structural setting can effectively improve the overall structural strength of the rod body assembly composed of the supporting main rod 1, the first stage pulling rod 3 and the second stage pulling rod 7, so that it has good impact resistance and deformation resistance, and can effectively avoid deformation and bending of the rod body after long-term use, thereby increasing the overall service life and effect of the rod body. In addition, the material of aluminum alloy has the characteristics of light use while having high structural strength. The overall weight is light when used, which can effectively reduce the overall weight of the rod body and is more practical.

[0023] The tail end of the first-stage pulling rod 3 is fixed with a first-stage limiting ring 6, which can limit the tail end of the first-stage pulling rod 3, thereby effectively preventing the first-stage pulling rod 3 from falling out from the inside of the supporting main rod 1, having a good anti-falling effect and ensuring the normal use of the pull rod;

[0024] In order to prevent the secondary pulling rod 7 from falling out from the first pulling rod 3, a secondary limiting ring 9 is provided on the external fixed sleeve of the tail end of the secondary pulling rod 7. The effect is the same as the above-mentioned use. The secondary limiting ring 9 can limit the tail end of the secondary pulling rod 7, thereby effectively preventing the secondary pulling rod 7 from falling out from the first pulling rod 3.

[0025] In this embodiment, in order to position the extension height of the secondary pull rod 7 at different positions, a plurality of height positioning holes 4 are opened on the side wall of the primary pull rod 3, and the plurality of height positioning holes 4 are linearly distributed with equal spacing;

[0026] Among them, the aperture sizes of the several height positioning holes 4 are the same;

[0027] Furthermore, a secondary spring knob 8 is fixedly mounted on the tail end of the secondary pulling rod 7, and the secondary spring knob 8 and the height positioning hole 4 are designed as an adaptive structure;

[0028] With this structural design, in actual use, the secondary spring knob 8 can be inserted into the height positioning hole 4, so that the positioning and fixing of the secondary pull-out rod 7 can be completed through the coordinated use of the knob and the hole. At the same time, by providing height positioning holes 4 at different positions, when the secondary spring knob 8 is positioned inside the height positioning holes 4 at different positions, the overall length of the rod assembly will also change accordingly, so that the total length of the rod can be adjusted in multiple gears. In actual use, it can be suitable for people of different heights to meet usage needs.

[0029] In this embodiment, in order to position the primary pull rod 3, a primary spring knob 5 is fixedly installed at the tail end of the primary pull rod 3. The primary spring knob 5 and the main rod positioning hole 2 are designed as an adaptive structure.

[0030] This embodiment has the same effect as the above-mentioned secondary spring knob 8. The primary spring knob 5 can be inserted into the main rod positioning hole 2, so that the primary pull rod 3 can be positioned after it is extended, thereby increasing the length of the rod body.

[0031] Working principle: The utility model can be installed on a trolley-type luggage to ensure normal use. The first-level pull-out rod 3 and the supporting main rod 1 can be used as the first-level pull-out rod telescopic structure, while the first-level pull-out rod 3 and the second-level pull-out rod 7 can be used as the second-level telescopic structure of the rod body.

[0032] When the secondary pulling rod 7 is pulled out, the secondary spring convex button 8 can be inserted into the height positioning hole 4, so that the positioning and fixing work of the secondary pulling rod 7 can be completed through the coordinated use of the convex button and the hole. At the same time, by providing the height positioning holes 4 at different positions, when the secondary spring convex button 8 is positioned inside the height positioning holes 4 at different positions, the overall length of the rod body assembly will also change accordingly, so that the total length of the rod body can be adjusted in multiple gears, which is suitable for people of different heights in actual use and meets the use needs;

[0033] In order to position the first-stage pulling rod 3, a first-stage spring convex button 5 is fixedly installed at the tail end of the first-stage pulling rod 3. The first-stage spring convex button 5 and the main rod positioning hole 2 are designed as an adaptive structure. The first-stage spring convex button 5 can be inserted into the main rod positioning hole 2, so that the first-stage pulling rod 3 can be positioned after it is extended, thereby increasing the rod body length and ensuring normal use effect;

[0034] The supporting main rod 1, the primary pulling rod 3 and the secondary pulling rod 7 of the utility model are made of aluminum alloy material. This structural arrangement can effectively improve the overall structural strength of the rod body assembly composed of the supporting main rod 1, the primary pulling rod 3 and the secondary pulling rod 7, so that it has good impact resistance and deformation resistance, and can effectively prevent the rod body from being deformed and bent after long-term use, thereby increasing the overall service life and effect of the rod body. In addition, the material of aluminum alloy has the characteristics of light use while having high structural strength. The overall weight is light when used, which can effectively reduce the overall weight of the rod body, has the technical characteristics of lightweight use, and is more practical.

[0035] The tail end of the first-stage pulling rod 3 is fixed with a first-stage limiting ring 6, which can limit the tail end of the first-stage pulling rod 3, thereby effectively preventing the first-stage pulling rod 3 from falling out from the inside of the supporting main rod 1, having a good anti-falling effect and ensuring the normal use of the pull rod;

[0036] In order to prevent the secondary pulling rod 7 from falling out from the first pulling rod 3, a secondary limiting ring 9 is provided on the external fixed sleeve of the tail end of the secondary pulling rod 7. The effect is the same as the above-mentioned use. The secondary limiting ring 9 can limit the tail end of the secondary pulling rod 7, thereby effectively preventing the secondary pulling rod 7 from falling out from the first pulling rod 3.

[0037] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A luggage telescopic pull rod structure, comprising a supporting main rod (1), characterized in that: The interior of the supporting main rod (1) is designed as a hollow structure. The interior of the supporting main rod (1) is connected to a first-level pull-out rod (3) in a sliding and telescopic manner. The outer walls of the top and tail ends of the supporting main rod (1) are provided with main rod positioning holes (2). The interior of the first-level pull-out rod (3) is designed as a hollow structure. The interior of the first-level pull-out rod (3) is connected to a second-level pull-out rod (7) in a sliding and telescopic manner. The supporting main rod (1), the first-level pull-out rod (3) and the second-level pull-out rod (7) are made of aluminum alloy material. The external fixing sleeve at the tail end of the first-level pull-out rod (3) is provided with a first-level limiting ring (6), and the external fixing sleeve at the tail end of the second-level pull-out rod (7) is provided with a second-level limiting ring (9).

2. The luggage telescopic pull rod structure according to claim 1, characterized in that: A plurality of height positioning holes (4) are provided on the side wall of the first-level drawing rod (3), and the plurality of height positioning holes (4) are linearly distributed at equal intervals.

3. The luggage telescopic pull rod structure according to claim 2, characterized in that: The aperture sizes of the plurality of height positioning holes (4) are the same.

4. The luggage telescopic pull rod structure according to claim 1, characterized in that: A first-stage spring convex button (5) is fixedly mounted on the tail end of the first-stage pulling rod (3), and the first-stage spring convex button (5) and the main rod positioning hole are designed as an adaptive structure.

5. The luggage telescopic pull rod structure according to claim 1, characterized in that: A secondary spring convex button (8) is fixedly mounted on the tail end of the secondary pulling rod (7), and the secondary spring convex button (8) and the height positioning hole (4) are designed as an adaptive structure.

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