Luggage with built-in retractable thickened layer

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The design of the inner telescopic thickened layer solves the problem of fixed capacity of the suitcase, realizes adjustable capacity and improved aesthetics, enhances applicability, and ensures security with the lock body.

CN224572337UActive Publication Date: 2026-07-31GUANGZHOU BAIWEI TECHNOLOGY CO LTD

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Patent Information

Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner: GUANGZHOU BAIWEI TECHNOLOGY CO LTD
Filing Date: 2025-07-31
Publication Date: 2026-07-31

AI Technical Summary

Technical Problem

The existing rolling suitcases have a fixed capacity, which affects their aesthetics and usability, and the exposed telescopic enclosure detracts from the overall appearance.

Method used

Design a trolley case with a built-in telescopic thickened layer. The capacity is adjustable through the combination of an outer zipper, an inner zipper, and a telescopic layer. The outer zipper can store the inner zipper and the telescopic layer, and the lock body ensures security.

Benefits of technology

It achieves flexible adjustment of the luggage capacity, has a simple and aesthetically pleasing structure, wide applicability, and a lock body that ensures safety and reliability.

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Abstract

This utility model belongs to the field of luggage technology and provides a trolley case with a concealed retractable thickened layer. It includes a first case body, a second case body, and a connecting mechanism. The first and second case bodies are hinged together, and the connecting mechanism connects them. The connecting mechanism includes an outer zipper, an inner zipper, and a retractable layer. The outer zipper connects the edge of the first case body to the edge of the second case body. The inner zipper and the retractable layer are located inside the outer zipper and connect the edge of the first case body to the edge of the second case body. The first and / or second case bodies are equipped with locks corresponding to the outer and inner zippers. This trolley case has the advantages of adjustable capacity, simple structure, and convenient adjustment. By setting the outer zipper, inner zipper, and retractable layer, when the required capacity is small, only the outer zipper can be closed, and the inner zipper and retractable layer can be stored inside the outer zipper, making the trolley case more compact. When the required capacity is large, the outer zipper can be opened.

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Description

Technical Field

[0001] This utility model relates to the field of luggage technology, and in particular to a trolley case with a built-in telescopic thickened layer. Background Technology

[0002] Rolling suitcases, equipped with wheels at the bottom and a retractable handle, are highly portable and offer excellent storage capacity, making them a common item for travelers and travelers. However, the capacity of most rolling suitcases is fixed, preventing them from adjusting to the amount of items inside. This means that too many or too few items inside significantly impact the suitcase's aesthetics and limits its versatility. While some rolling suitcases now feature retractable flaps, these flaps are exposed, revealing two zippers when retracted, detracting from the overall appearance.

[0003] The technical problem to be solved by this utility model is: how to solve the problem that the fixed capacity of existing trolley cases affects the aesthetics and applicability of the trolley cases. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a trolley case with a built-in telescopic thickened layer, which can adjust the internal capacity of the case according to the needs, and has the characteristics of simple structure, good versatility and convenient adjustment.

[0005] The technical solution adopted by this utility model is as follows: a trolley case with a built-in telescopic thickened layer, including a first case body, a second case body and a connecting mechanism. The first case body and the second case body are hinged together. The connecting mechanism connects the first case body and the second case body. The connecting mechanism includes an outer zipper, an inner zipper and a telescopic layer. The outer zipper connects the edge of the first case body and the edge of the second case body. The inner zipper and the telescopic layer are located inside the outer zipper and connect the edge of the first case body and the edge of the second case body. The first case body and / or the second case body are provided with locks corresponding to the outer zipper and the inner zipper.

[0006] The trolley case with a built-in telescopic thickened layer has the advantages of adjustable capacity, simple structure, and convenient adjustment. By setting up an outer zipper, an inner zipper, and a telescopic layer, when the required capacity is small, only the outer zipper can be closed, while the inner zipper can be either open or closed, storing the inner zipper and telescopic layer inside the outer zipper, making the trolley case more compact and aesthetically pleasing. When a larger capacity is needed, the outer zipper can be opened, and the inner zipper can be closed after loading items. Since the telescopic layer is connected to the case body and the inner zipper, the capacity of the trolley case can be expanded. Moreover, both the inner and outer zippers can be locked with a lock, ensuring safety and reliability.

[0007] In some embodiments, the outer zipper includes a first chain and a second chain that are disposed opposite to each other, and two first pull heads that connect the first chain and the second chain. One side of the first chain is connected to the edge of the first housing, and one side of the second chain is connected to the edge of the second housing. The two first pull heads are disposed opposite to each other, and each of the two first pull heads is hinged with a first pull tab. The first pull tab is provided with a first lock hole corresponding to the lock body.

[0008] Using the above technical solution, the first chain is directly connected to the first case, and the second chain is directly connected to the second case. When the outer zipper is zipped up, the overall structure of the suitcase becomes more compact and aesthetically pleasing.

[0009] In some implementations, the telescopic enclosure is attached to one or both sides of the inner zipper.

[0010] By adopting the above technical solution, telescopic enclosures can be set on one or both sides of the inner zipper according to the needs of capacity changes, which is flexible and versatile and has a wider range of applications.

[0011] In some embodiments, the inner zipper includes a third and a fourth zipper belt arranged opposite each other, and two second pull heads connecting the third and fourth zipper belts. The third zipper belt is located inside the first zipper belt, and one side of the third zipper belt is connected to the edge of the first housing. The fourth zipper belt and the telescopic enclosure are located inside the second zipper belt, one side of the telescopic enclosure is connected to the edge of the second housing, and the other side is connected to one side of the fourth zipper belt. The two second pull heads are arranged opposite each other, and each of the two second pull heads is hinged with a second pull tab. The second pull tab is provided with a second lock hole corresponding to the lock body.

[0012] By adopting the above technical solution, the capacity of the suitcase can be expanded by connecting the third chain belt to the first box and the fourth chain belt to the second box via the telescopic enclosure. Moreover, when the outer zipper is closed, the inner zipper and the telescopic enclosure are covered by the outer zipper, making it more aesthetically pleasing.

[0013] In some implementations, the lock body is located on the first housing.

[0014] By adopting the above technical solution, when the telescopic enclosure is connected to the second housing, the lock body is set on the first housing, which makes it easy for the second pull tab to lock with the lock body.

[0015] In some embodiments, an elastic connector is provided at the hinge joint between the first housing and the second housing, and the elastic connector has a cavity for accommodating the first pull head and the first pull tab.

[0016] Using the above technical solution, the elastic connector not only acts as a hinge connecting the first and second boxes, but also extends and retracts synchronously according to the size of the luggage's capacity, so that the height of the hinge between the first and second boxes matches the overall capacity of the luggage. At the same time, when the inner zipper is used, the first zipper head and the first pull tab of the outer zipper are stored inside the elastic connector, making the luggage more aesthetically pleasing.

[0017] In some implementations, the resilient connector is made of one or more materials, such as fabric, leather, or plastic, which are flexible.

[0018] By adopting the above technical solution, the elastic connector can be made of one or more materials such as flexible fabric, leather or plastic, so that the elastic connector can meet the needs of the application scenario.

[0019] In some implementations, the lock body is unlocked by a password and / or a key.

[0020] By adopting the above technical solution, the unlocking method can be selected flexibly according to the needs of different groups of people. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a preferred embodiment of the present invention, showing a trolley case with a thickened inner telescopic enclosure and an outer zipper zipped up.

[0022] Figure 2 for Figure 1 An enlarged schematic diagram of the structure at point A is shown below;

[0023] Figure 3 for Figure 1 Another structural diagram of the luggage with a built-in telescopic thickened layer;

[0024] Figure 4 for Figure 1 The diagram shows a suitcase with a thickened inner telescopic zipper zipped up.

[0025] Figure 5 for Figure 4 The diagram shows an enlarged view of the structure at point B.

[0026] In the diagram: 100, a trolley case with a thickened inner telescopic enclosure; 10, the first case body; 20, the second case body; 30, the outer zipper; 31, the first chain belt; 32, the second chain belt; 33, the first zipper pull; 34, the first pull tab; 40, the inner zipper; 41, the third chain belt; 42, the fourth chain belt; 43, the second zipper pull; 44, the second pull tab; 50, the telescopic enclosure; 60, the lock body; 70, the elastic connector. Detailed Implementation

[0027] 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.

[0028] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. When the number of elements is referred to as "multiple," it can be any number of two or more. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0030] Please see Figures 1 to 5 A preferred embodiment of this utility model discloses a trolley case 100 with a concealed telescopic thickened layer, comprising a first case body 10, a second case body 20, and a connecting mechanism. The first case body 10 and the second case body 20 are hinged together, and the connecting mechanism connects the first case body 10 and the second case body 20. The connecting mechanism includes an outer zipper 30, an inner zipper 40, and a telescopic enclosure 50. The outer zipper 30 connects the edge of the first case body 10 to the edge of the second case body 20. The inner zipper 40 and the telescopic enclosure 50 are disposed inside the outer zipper 30 and connect the edge of the first case body 10 to the edge of the second case body 20. The first case body 10 and / or the second case body 20 are provided with lock bodies 60 corresponding to the outer zipper 30 and the inner zipper 40. The trolley case 100 with a concealed telescopic thickened layer of this application can adjust the internal capacity of the case body according to needs and has the characteristics of simple structure, good versatility, and convenient adjustment.

[0031] Specifically, such as Figure 2As shown, the outer zipper 30 includes a first chain strap 31 and a second chain strap 32 arranged opposite to each other, and two first pull heads 33 connecting the first chain strap 31 and the second chain strap 32. One side of the first chain strap 31 is connected to the edge of the first case 10, and one side of the second chain strap 32 is connected to the edge of the second case 20. The two first pull heads 33 are arranged opposite to each other, and each of the two first pull heads 33 is hinged with a first pull tab 34. The first pull tab 34 is provided with a first lock hole corresponding to the lock body 60. The first chain strap 31 is directly connected to the first case 10, and similarly, the second chain strap 32 is directly connected to the second case 20. When the outer zipper 30 is pulled up, the overall structure of the suitcase becomes more compact and aesthetically pleasing.

[0032] Optionally, the telescopic enclosure 50 is connected to one or both sides of the inner zipper 40. The telescopic enclosure 50 can be set on one or both sides of the inner zipper 40 according to the needs of capacity changes, which is flexible and versatile and has a wider range of applications.

[0033] In this embodiment, as Figure 5 As shown, the inner zipper 40 includes a third chain strap 41 and a fourth chain strap 42 arranged opposite to each other, and two second pull heads 43 connecting the third chain strap 41 and the fourth chain strap 42. The third chain strap 41 is located inside the first chain strap 31, and one side of the third chain strap 41 is connected to the edge of the first case 10. The fourth chain strap 42 and the telescopic enclosure 50 are located inside the second chain strap 32. One side of the telescopic enclosure 50 is connected to the edge of the second case 20, and the other side is connected to one side of the fourth chain strap 42. The two second pull heads 43 are arranged opposite to each other, and each of the two second pull heads 43 is hinged with a second pull tab 44. The second pull tab 44 is provided with a second lock hole corresponding to the lock body 60. By connecting the third chain strap 41 to the first case 10 and the fourth chain strap 42 to the second case 20 through the telescopic enclosure 50, the capacity of the suitcase can be expanded. Moreover, when the outer zipper 30 is closed, the inner zipper 40 and the telescopic enclosure 50 are covered by the outer zipper 30, making it more aesthetically pleasing.

[0034] Correspondingly, the lock body 60 is mounted on the first housing 10. When the telescopic enclosure 50 is connected to the second housing 20, mounting the lock body 60 on the first housing 10 facilitates locking the second pull tab 44 with the lock body 60.

[0035] In one embodiment, such as Figure 3As shown, an elastic connector 70 is provided at the hinge joint between the first housing 10 and the second housing 20. The elastic connector 70 has a cavity for accommodating the first zipper pull 33 and the first pull tab 34. The elastic connector 70 not only acts as a hinge between the first housing 10 and the second housing 20, but also extends and retracts synchronously according to the size of the trolley case, so that the height of the hinge joint between the first housing 10 and the second housing 20 matches the overall capacity of the trolley case. At the same time, when the inner zipper 40 is used, the first zipper pull 33 and the first pull tab 34 of the outer zipper 30 are housed inside the elastic connector 70, making the trolley case more aesthetically pleasing.

[0036] Preferably, the elastic connector 70 is made of one or more materials, such as fabric, leather, or plastic, which are flexible. Using one or more flexible materials, such as fabric, leather, or plastic, to make the elastic connector 70 allows it to meet the needs of different usage scenarios.

[0037] Optionally, the lock body 60 can be unlocked via a password and / or key. The unlocking method can be chosen flexibly to meet the needs of different users.

[0038] The trolley case 100 with a built-in telescopic thickened layer has the advantages of adjustable capacity, simple structure, and convenient adjustment. By setting an outer zipper 30, an inner zipper 40, and a telescopic enclosure 50, when the required capacity is small, only the outer zipper 30 can be closed, while the inner zipper 40 can be either open or closed. The inner zipper 40 and the telescopic enclosure 50 are stored inside the outer zipper 30, making the trolley case more compact and aesthetically pleasing. When a larger capacity is required, the outer zipper 30 can be opened, and the inner zipper 40 can be closed after loading items. Since the telescopic enclosure 50 is connected to the case body and the inner zipper 40, the capacity of the trolley case can be expanded. Moreover, both the inner zipper 40 and the outer zipper 30 can be locked by the lock body 60, which is safe and reliable.

[0039] Finally, it should be noted that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A trolley case with a concealed telescopic thickened layer, comprising a first case body (10), a second case body (20), and a connecting mechanism, wherein the first case body (10) and the second case body (20) are hinged together, and the connecting mechanism connects the first case body (10) and the second case body (20), characterized in that: The connecting mechanism includes an outer zipper (30), an inner zipper (40), and a telescopic enclosure (50). The outer zipper (30) connects the edge of the first box (10) to the edge of the second box (20). The inner zipper (40) and the telescopic enclosure (50) are located inside the outer zipper (30) and connect the edge of the first box (10) to the edge of the second box (20). The first box (10) and / or the second box (20) are provided with lock bodies (60) corresponding to the outer zipper (30) and the inner zipper (40).

2. The suitcase with a concealed telescopic thickened layer according to claim 1, characterized in that, The outer zipper (30) includes a first chain belt (31) and a second chain belt (32) arranged opposite to each other, and two first pull heads (33) connecting the first chain belt (31) and the second chain belt (32). One side of the first chain belt (31) is connected to the edge of the first housing (10), and one side of the second chain belt (32) is connected to the edge of the second housing (20). The two first pull heads (33) are arranged opposite to each other, and each of the two first pull heads (33) is hinged with a first pull tab (34). The first pull tab (34) is provided with a first lock hole corresponding to the lock body (60).

3. The retractable-suspension-encased pad-expanding layer trolley case according to claim 1, characterized in that, The telescopic enclosure (50) is connected to one or both sides of the inner zipper (40).

4. The trolley case with a concealed telescopic thickened layer according to claim 1, characterized in that, The inner zipper (40) includes a third chain (41) and a fourth chain (42) arranged opposite to each other, and two second pull heads (43) connecting the third chain (41) and the fourth chain (42). The third chain (41) is located inside the first chain (31), and one side of the third chain (41) is connected to the edge of the first housing (10). The fourth chain (42) and the telescopic enclosure (50) are located inside the second chain (32). One side of the telescopic enclosure (50) is connected to the edge of the second housing (20), and the other side is connected to one side of the fourth chain (42). The two second pull heads (43) are arranged opposite to each other, and each of the two second pull heads (43) is hinged with a second pull tab (44). The second pull tab (44) is provided with a second lock hole corresponding to the lock body (60).

5. The retractable-suspension-encased pad-expanding layer trolley case according to claim 4, characterized in that, The lock body (60) is mounted on the first housing (10).

6. The retractable-suspension layer-adding trolley suitcase according to claim 2, characterized by An elastic connector (70) is provided at the hinge of the first box (10) and the second box (20), and the elastic connector (70) has a cavity for accommodating the first pull head (33) and the first pull tab (34).

7. The retractable-suspension layer-adding trolley suitcase according to claim 6, characterized in that, The elastic connector (70) is made of one or more materials, such as fabric, leather or plastic, which are flexible.

8. The retractable-suspension-encased pad-expanding layer trolley case according to claim 1, wherein, The lock body (60) is unlocked by a password and / or a key.