Adjustable pull rod luggage case

By introducing a retractable layer and zipper structure into the suitcase, the problems of fixed suitcase capacity and large footprint are solved, enabling flexible capacity adjustment and improved waterproofing.

CN224155246UActive Publication Date: 2026-04-24ZHEJIANG LINGXIU LUGGAGE CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHEJIANG LINGXIU LUGGAGE CO LTD
Filing Date
2025-05-26
Publication Date
2026-04-24

AI Technical Summary

Technical Problem

Existing suitcases have a fixed capacity, which cannot be adjusted according to the size of the items to be packed, and they take up a large area, making them difficult to store effectively.

Method used

An adjustable trolley suitcase was designed. By setting a telescopic layer and a zipper between the upper and lower connecting covers, the capacity space can be adjusted by utilizing the stretchability of the telescopic layer. Waterproofing is improved by waterproof adhesive strips and sealing strips. The zipper is equipped with a locking device to fix the pull ring.

Benefits of technology

It allows for adjusting the container capacity according to the size of the items, reducing the floor space occupied, and improving waterproof performance to adapt to different loading needs.

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Abstract

The utility model belongs to the technical field of luggage cases, and particularly relates to an adjustable draw-bar luggage case, which comprises a case body, a draw bar and damping wheels, the case body comprises an upper connecting cover and a lower connecting cover, when larger articles are placed, a first zipper is unzipped to place the articles in an accommodating cavity, and then a second zipper is unzipped to place the articles in the accommodating cavity; the telescopic layer is used for increasing the height between the upper connecting cover and the lower connecting cover, the telescopic layer can be stretched twice or more through the telescopic layer, when the luggage is not used, the telescopic layer is extruded into the containing cavity, the second zipper and the first zipper are sequentially zipped up, and due to the fact that the first waterproof rubber strip, the second waterproof rubber strip and the sealing strip are installed, the luggage can be conveniently and rapidly folded. Water is prevented from entering the accommodating cavity, so that the overall waterproofness is improved; compared with the prior art, the capacity space in the box body can be adjusted according to the size of loaded articles, and the occupied area is reduced.
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Description

Technical Field

[0001] This utility model relates to the field of luggage technology, and more specifically, to an adjustable pull-rod luggage. Background Technology

[0002] Suitcases are an indispensable piece of equipment when we travel. Their purpose is to store the clothes and personal care items we need for the trip. Using a suitcase makes it easy to carry items and makes travel more convenient. Suitcases are made of PC or lightweight metal materials.

[0003] Currently, suitcases such as Figure 1 As shown: its structure includes a box body 01, a pull rod 02 and a shock-absorbing wheel 03. The pull rod 02 is connected to the top of the box body 01, and the shock-absorbing wheel 03 is placed at the bottom of the box body 01 and is rotatably connected to the box body 01. The box body 01 includes an upper cover 04 and a lower cover 05, which are connected by a zipper 06.

[0004] As mentioned above, since the upper cover 04 and the lower cover 05 are fixed and are made of rigid material, they cannot be compressed when the suitcase is not in use, resulting in a large footprint and making it difficult to store the suitcase properly. Furthermore, the internal space between the upper cover 04 and the lower cover 05 is relatively fixed, making it difficult to load items according to their size. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an adjustable trolley suitcase that can adjust the internal capacity space by the size of the loaded items and reduce the floor space occupied.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] An adjustable trolley suitcase includes a suitcase body, a trolley rod, and shock-absorbing wheels. The trolley rod is connected to the top of the suitcase body, and the shock-absorbing wheels are located at the bottom of the suitcase body and are rotatably connected to the suitcase body. The suitcase body includes an upper connecting cover and a lower connecting cover. The outer walls of the upper and lower connecting covers are connected by a first zipper, and a cavity for storing items is formed between the inner walls of the upper and lower connecting covers.

[0008] The outer walls of the upper and lower connecting covers are connected by a first zipper. A first waterproof strip is provided between the first zipper and the lower connecting cover, and the first waterproof strip is fixed to both the first zipper and the lower connecting cover.

[0009] The lower connecting cover has a telescopic layer inside. One side of the telescopic layer is fixedly connected to the lower connecting cover, and the other side is connected to the inner wall of the upper connecting cover via a second zipper.

[0010] A second waterproof strip is provided between the second zipper and the upper connecting cover, and the second waterproof strip is fixed to both the second zipper and the upper connecting cover.

[0011] The height of the expansion joint is greater than the height of both the upper and lower connecting covers.

[0012] The present invention is further configured such that: a waterproof film is provided on both the first waterproof strip and the second waterproof strip, and the waterproof film is fixed to the first waterproof strip and the second waterproof strip.

[0013] The present invention is further configured such that: a sealing strip is provided between the telescopic layer and the lower connecting cover, the sealing strip is connected to both the telescopic layer and the lower connecting cover, the sealing strip is made of silicone, and the telescopic layer is made of polyester.

[0014] The present invention is further configured such that: the first zipper is provided with two pull rings, the top of the lower connecting cover is provided with a locking member, and the first zipper is connected to the locking member.

[0015] The locking component has two connecting holes, and the pull ring is placed inside the connecting holes and connected to them.

[0016] The present invention is further configured such that: an opening is provided between the upper connecting cover and the lower connecting cover, and a silicone layer is provided on the opening and fixedly connected to the opening; a first zipper is placed on the silicone layer and slidably connected to the silicone layer.

[0017] The present invention is further configured such that: an opening two is provided between the telescopic layer and the upper connecting cover, and a second zipper is placed on the opening two and slidably connected to the opening two.

[0018] By adopting the above technical solution, the beneficial effects of this utility model are as follows:

[0019] Example 1: When placing larger items, first pull the two loops on the first zipper out of the connecting holes, open the first zipper and place the item in the receiving cavity, then open the second zipper and use the telescopic layer to raise the height between the upper and lower connecting covers. Through the telescopic layer, the telescopic layer can be extended two or more times, so that the capacity space inside the box can be adjusted according to the size of the loaded items.

[0020] Example 2: When the bag is not in use, by squeezing the telescopic layer into the receiving cavity, pulling up the second zipper, and finally pulling up the first zipper, the pull ring is locked in the connecting hole on the locking piece, thereby reducing the floor space occupied.

[0021] By installing the first and second waterproof sealing strips and the sealing strip, water is prevented from entering the cavity, thus increasing the overall waterproofness. Attached Figure Description

[0022] Figure 1 This is existing technology;

[0023] Figure 2This is a side view of an embodiment of the present utility model;

[0024] Figure 3 This is a partial schematic diagram of an embodiment of the present utility model.

[0025] 1. Box body, 2. Pull rod, 3. Shock-absorbing wheel, 4. Upper connecting cover, 5. Lower connecting cover, 6. First zipper, 7. Telescopic layer, 8. Locking device, 9. Pull ring, 10. Silicone layer, 11. Second zipper, 12. First waterproof strip, 13. Second waterproof strip, 14. Sealing strip. Detailed Implementation

[0026] 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.

[0027] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] like Figures 2 to 3 As shown, the adjustable pull rod suitcase includes a suitcase body 1, a pull rod 2, and shock-absorbing wheels 3. The pull rod 2 is connected to the top of the suitcase body 1, and the shock-absorbing wheels 3 are placed at the bottom of the suitcase body 1 and are rotatably connected to the suitcase body 1. The suitcase body 1 includes an upper connecting cover 4 and a lower connecting cover 5. The outer walls of the upper connecting cover 4 and the lower connecting cover 5 are connected by a first zipper 6.

[0029] An opening is provided between the upper connecting cover 4 and the lower connecting cover 5. A silicone layer 10 is fixedly connected to the opening. The first zipper 6 is placed on the silicone layer 10 and slidably connected to the silicone layer 10.

[0030] A cavity for placing items is formed between the inner wall of the upper connecting cover 4 and the inner wall of the lower connecting cover 5.

[0031] A locking element 8 is installed on the top of the lower connecting cover 5. The first zipper 6 is connected to the locking element 8. Two pull rings 9 are installed on the first zipper 6. Two connecting holes are opened on the locking element 8. The pull rings 9 are placed in the connecting holes and connected to the connecting holes.

[0032] The lower connecting cover 5 has a telescopic layer 7 inside. One side of the telescopic layer 7 is fixedly connected to the lower connecting cover 5, and the other side is connected to the inner wall of the upper connecting cover 4 through a second zipper 11. An opening 2 is provided between the telescopic layer 7 and the upper connecting cover 4. The second zipper 11 is placed on the opening 2 and is slidably connected to the opening 2.

[0033] The height of the telescopic layer 7 is greater than the height of the upper connecting cover 4 and the lower connecting cover 5. The telescopic layer 7 is made of polyester and can be stretched open so that the telescopic layer 7 can be stretched two or more times.

[0034] A first waterproof adhesive strip 12 is provided between the first zipper 6 and the lower connecting cover 5. The first waterproof adhesive strip 12 is glued and fixed to the first zipper 6 and the lower connecting cover 5 to prevent water from entering the receiving cavity from the first zipper 6 and the lower connecting cover 5, thereby increasing the waterproof performance.

[0035] A second waterproof adhesive strip 13 is provided between the second zipper 11 and the upper connecting cover 4. The second waterproof adhesive strip 13 is glued and fixed to the second zipper 11 and the upper connecting cover 4.

[0036] Water will not enter the receiving cavity from the second zipper 11 and the upper connecting cover 4, increasing the overall waterproofness.

[0037] Both the first waterproof strip 12 and the second waterproof strip 13 are provided with a waterproof membrane, which is adhesively fixed to both the first waterproof strip 12 and the second waterproof strip 13. The waterproof membrane has excellent waterproof performance and a certain degree of abrasion resistance.

[0038] A sealing strip 14 is provided between the expansion layer 7 and the lower connecting cover 5. The sealing strip 14 is connected to both the expansion layer 7 and the lower connecting cover 5, and the sealing strip 14 is made of silicone. This prevents water from entering between the expansion layer 7 and the lower connecting cover 5, thus improving waterproofing.

[0039] Example 1: When placing larger items, first pull the two pull rings 9 on the first zipper 6 out of the connecting hole, pull open the first zipper 6 and place the item in the receiving cavity, pull open the second zipper 11, and use the telescopic layer 7 to raise the height between the upper connecting cover 4 and the lower connecting cover 5. Through the telescopic layer 7, the telescopic layer 7 can be extended two or more times, so that the capacity space inside the box can be adjusted according to the size of the loaded items.

[0040] Example 2: When the bag is not in use, by squeezing the telescopic layer 7 into the receiving cavity, pulling up the second zipper 11, and finally pulling up the first zipper 6, the pull ring 9 is locked in the connecting hole on the locking member 8, thereby reducing the floor space occupied.

[0041] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any ordinary changes and substitutions made by those skilled in the art within the scope of the technical solution of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An adjustable pull-rod suitcase, comprising a suitcase body (1), a pull rod (2), and shock-absorbing wheels (3), wherein the pull rod (2) is connected to the top of the suitcase body (1), and the shock-absorbing wheels (3) are located at the bottom of the suitcase body (1) and are rotatably connected to the suitcase body (1), characterized in that, The housing (1) includes an upper connecting cover (4) and a lower connecting cover (5). An accommodating cavity for placing items is formed between the inner wall of the upper connecting cover (4) and the inner wall of the lower connecting cover (5). The outer wall of the upper connecting cover (4) and the outer wall of the lower connecting cover (5) are connected by a first zipper (6). A first waterproof strip (12) is provided between the first zipper (6) and the lower connecting cover (5). The first waterproof strip (12) is fixed to the first zipper (6) and the lower connecting cover (5). The lower connecting cover (5) has a telescopic layer (7) inside. One side of the telescopic layer (7) is fixedly connected to the lower connecting cover (5), and the other side is connected to the inner wall of the upper connecting cover (4) through a second zipper (11). A second waterproof strip (13) is provided between the second zipper (11) and the upper connecting cover (4). The second waterproof strip (13) is fixed to both the second zipper (11) and the upper connecting cover (4). The height of the telescopic layer (7) is greater than the height of the upper connecting cover (4) and the lower connecting cover (5).

2. The adjustable pull-rod suitcase according to claim 1, characterized in that, Both the first waterproof strip (12) and the second waterproof strip (13) are provided with a waterproof film, and the waterproof film is fixed to the first waterproof strip (12) and the second waterproof strip (13).

3. An adjustable pull-rod suitcase according to claim 2, characterized in that, A sealing strip (14) is provided between the telescopic layer (7) and the lower connecting cover (5). The sealing strip (14) is connected to both the telescopic layer (7) and the lower connecting cover (5). The sealing strip (14) is made of silicone, and the telescopic layer (7) is made of polyester.

4. An adjustable pull-rod suitcase according to claim 1, characterized in that, The first zipper (6) is provided with two pull rings (9), and the top of the lower connecting cover (5) is provided with a locking member (8). The first zipper (6) is connected to the locking member (8). The locking part (8) has two connecting holes, and the pull ring (9) is placed in the connecting holes and connected to the connecting holes.

5. An adjustable pull-rod suitcase according to claim 1, characterized in that, An opening is provided between the upper connecting cover (4) and the lower connecting cover (5), and a silicone layer (10) is fixedly connected to the opening. The first zipper (6) is placed on the silicone layer (10) and slidably connected to the silicone layer (10).

6. An adjustable pull-rod suitcase according to claim 1, characterized in that, An opening two is provided between the telescopic layer (7) and the upper connecting cover (4), and the second zipper (11) is placed on the opening two and slidably connected to the opening two.