Durable draw-bar box shell and draw-bar box

Abstract

The utility model provides a durable draw-bar box shell and a draw-bar box. The durable draw-bar box shell comprises a box body, a box lock is installed on the surface of the box body, handles are installed on the surfaces of the two sides of the box body, trundles are installed at the bottom of the box body, and a draw bar assembly is arranged on the upper portion of one side of the box body; the box body comprises an outer anti-scraping layer, a middle supporting layer is arranged on the inner side of the outer anti-scraping layer, and an inner buffering layer is arranged on the inner side of the middle supporting layer. The composite structure of the outer anti-scraping layer, the middle supporting layer and the inner buffering layer is adopted, and the outer anti-scraping layer is made of a high-density polycarbonate material and is resistant to scraping and abrasion; the middle supporting layer is of a honeycomb-shaped aluminum alloy structure and is high in strength and light in weight; the inner buffer layer is made of a thermoplastic polyurethane elastomer material and can effectively absorb impact energy. According to the composite structure, when the box body is frequently carried and moves on a complex terrain, high strength and impact resistance can be considered, abrasion, sinking and cracking are avoided, and the durability of the shell is remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of trolley cases, specifically to a durable trolley case shell and a trolley case. Background Technology

[0002] With the increasing demand for modern travel and transportation, the functionality, durability, and lightweight design of rolling suitcases, as an important portable storage device, have become the core direction of industry development. Traditional rolling suitcases mostly use a single material structure for their outer shell, which can meet basic protection needs, but there is still room for improvement in their overall performance when dealing with complex usage scenarios.

[0003] Traditional rolling suitcases often use a single material for their outer shell, resulting in poor durability. When frequently moved or transported across complex terrains, they struggle to maintain both high strength and impact resistance, making them prone to wear, dents, and even cracks. Furthermore, the shell lacks effective cushioning, failing to provide sufficient protection for the contents. When subjected to external impacts, the contents are easily damaged. In addition, the shell's poor waterproof and breathable properties make it difficult to effectively prevent liquid water from entering, and the lack of air circulation can easily lead to odors, affecting the quality of stored items.

[0004] Therefore, we have made improvements to this and proposed a durable trolley case shell and trolley case. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a durable trolley case shell and trolley case, solving the problems mentioned in the background art.

[0006] To achieve the above-mentioned objectives, this utility model provides the following technical solution:

[0007] Durable suitcase shells and suitcases to solve the above problems.

[0008] The application is as follows:

[0009] The box includes a box body, a lock is installed on the surface of the box body, handles are installed on both sides of the box body, casters are installed on the bottom of the box body, and a pull rod assembly is provided on the upper part of one side of the box body;

[0010] The housing includes an outer scratch-resistant layer, an inner support layer is provided on the inner side of the outer scratch-resistant layer, and an inner buffer layer is provided on the inner side of the inner support layer. The outer scratch-resistant layer, the inner support layer and the inner buffer layer are combined into one piece by a co-extrusion molding process.

[0011] As a preferred technical solution of this application, the outer scratch-resistant layer is made of high-density polycarbonate material and has a thickness of 1.0-1.5mm.

[0012] As a preferred technical solution of this application, the intermediate support layer is a honeycomb aluminum alloy structure with a thickness of 2.5-3.5mm.

[0013] As a preferred technical solution of this application, the inner buffer layer is made of thermoplastic polyurethane elastomer material with a thickness of 0.5-1.0 mm.

[0014] As a preferred technical solution of this application, the outer surface of the outer scratch-resistant layer is covered with a microporous waterproof and breathable membrane, and the pore size of the microporous waterproof and breathable membrane is ≤0.2μm, which can block liquid water but allow water vapor to pass through.

[0015] As a preferred technical solution of this application, the box body is provided with an anti-collision connector, the cross-section of the anti-collision connector is arc-shaped, and the anti-collision connector is provided with a reinforcing rib. The anti-collision connector is made of TPU material, and the reinforcing rib is made of glass fiber.

[0016] As a preferred technical solution of this application, the pull rod assembly includes a fixing member, which is fixedly installed inside the box. Lower rods are fixedly installed on both sides of the upper surface of the fixing member, and upper rods are slidably connected inside the lower rods. Plastic handles are engaged at the top of the two upper rods. Limiting members are installed on the upper surface of the box, and the upper rods are slidably connected to the limiting members.

[0017] As a preferred technical solution of this application, both the lower rod and the upper rod are made of aluminum alloy.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] In the scheme of this application:

[0020] 1. By employing a composite structure consisting of an outer scratch-resistant layer, a middle support layer, and an inner buffer layer, the outer scratch-resistant layer is made of high-density polycarbonate material, providing scratch and wear resistance; the middle support layer is a honeycomb aluminum alloy structure, offering high strength and lightweight properties; and the inner buffer layer is made of thermoplastic polyurethane elastomer material, effectively absorbing impact energy. This composite structure allows the enclosure to maintain both high strength and impact resistance during frequent handling and movement across complex terrains, preventing wear, dents, and cracks, and significantly improving the durability of the outer shell.

[0021] 2. The inner buffer layer provides reliable cushioning protection for the items inside the suitcase. When the suitcase is subjected to external impact, the inner buffer layer can absorb and disperse the impact force through its elastic deformation, reducing the impact force on the items and effectively reducing the risk of damage to the items due to collision, thus providing a safer storage environment for the items inside.

[0022] 3. The microporous waterproof and breathable membrane covering the outer surface of the scratch-resistant layer has a pore size of ≤0.2μm. It can block liquid water but allow water vapor to pass through. This design not only prevents the intrusion of rainwater and humid air, protecting the items inside the box from moisture, but also ensures the circulation of air inside the box, avoiding the generation of odors, and creating a dry and comfortable storage environment for the items. Attached image description:

[0023] Figure 1 This is a three-dimensional structural diagram of the first embodiment of the present invention;

[0024] Figure 2 This is a three-dimensional structural diagram of the second embodiment of the present invention;

[0025] Figure 3 This is a cross-sectional structural diagram of the box body of this utility model;

[0026] Figure 4 This is a structural schematic diagram of the box body and the anti-collision connector of this utility model;

[0027] Figure 5 This is a three-dimensional structural diagram of the anti-collision connector of this utility model;

[0028] Figure 6 This is a structural schematic diagram of the anti-collision connection section of this utility model;

[0029] Figure 7 This is a schematic diagram of the structure of the tie rod assembly of this utility model.

[0030] The image shows:

[0031] 1. Box body; 101. Outer scratch-resistant layer; 102. Middle support layer; 103. Inner buffer layer; 104. Microporous waterproof and breathable membrane; 2. Box lock; 3. Handle; 4. Casters; 5. Pull rod assembly; 501. Fixing component; 502. Lower rod; 503. Upper rod; 504. Limiting component; 505. Plastic handle; 6. Anti-collision connector; 7. Reinforcing rib. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described examples are only some embodiments of this utility model, and not all embodiments.

[0033] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0034] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0035] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0036] In the description of this utility model, it should be noted that the terms "upper" and "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms 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, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first" and "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0037] To address the technical problems in the background section, the following durable suitcase shell and suitcase are provided:

[0038] Combination Figure 1 - Figure 7 As shown, this utility model provides a durable trolley case shell and trolley case, including a case body 1, a case lock 2 installed on the surface of the case body 1, and handles 3 installed on both sides of the case body 1, casters 4 installed on the bottom of the case body 1, and a trolley assembly 5 provided on the upper part of one side of the case body 1; the case body 1 includes an outer scratch-resistant layer 101, and an intermediate support layer 102 is provided on the inner side of the outer scratch-resistant layer 101, and an inner buffer layer 103 is provided on the inner side of the intermediate support layer 102. The outer scratch-resistant layer 101, the intermediate support layer 102 and the inner buffer layer 103 are composited into one piece by a co-extrusion molding process.

[0039] In this embodiment: a lock 2 is installed on the surface of the case 1 to ensure the safety of the items; handles 3 are provided on both sides for easy handling in different scenarios; casters 4 are installed at the bottom to make the suitcase easier and less strenuous to move. A pull rod assembly 5 is provided on the upper side of one side of the case 1, which allows the user to adjust the height as needed for dragging. The case 1 adopts a three-layer composite structure, consisting of an outer scratch-resistant layer 101, a middle support layer 102, and an inner buffer layer 103 from the outside to the inside. These three layers are tightly bonded together by a co-extrusion molding process. This design is used to improve the durability, impact resistance, and item protection capabilities of the suitcase.

[0040] As a preferred embodiment, based on the above method, the outer scratch-resistant layer 101 is further made of high-density polycarbonate material and has a thickness of 1.0-1.5 mm.

[0041] In this embodiment, the use of high-density polycarbonate material gives the outer scratch-resistant layer 101 excellent scratch and wear resistance, effectively resisting the scratches and wear of various sharp objects during daily use and transportation, maintaining the smoothness and aesthetics of the case surface for a long time, greatly extending the service life of the suitcase, and providing reliable outer protection for the suitcase in complex environments.

[0042] As a preferred embodiment, based on the above method, the intermediate support layer 102 is further characterized by a honeycomb aluminum alloy structure with a thickness of 2.5-3.5 mm.

[0043] In this embodiment: the honeycomb structure achieves lightweight while ensuring high strength. The aluminum alloy material improves the support performance of the middle support layer 102, which can effectively disperse external impact and enhance the overall rigidity and stability of the case 1. When facing complex situations such as frequent handling and collisions, the middle support layer 102 can provide support for the case 1 with its own structural advantages, prevent the case 1 from deforming, and ensure that the suitcase can maintain good shape and performance in various usage scenarios.

[0044] As a preferred embodiment, based on the above method, the inner buffer layer 103 is further made of thermoplastic polyurethane elastomer material with a thickness of 0.5-1.0 mm.

[0045] In this embodiment: The thermoplastic polyurethane elastomer material has excellent elasticity and cushioning performance. When the suitcase is impacted by external force, the inner buffer layer 103 can quickly absorb and disperse the impact energy through its own elastic deformation, providing reliable protection for the items inside the suitcase 1. The inner buffer layer 103 can effectively reduce the damage to the items caused by collision and ensure the safety of the items during transportation and storage.

[0046] As a preferred embodiment, based on the above method, the outer surface of the outer scratch-resistant layer 101 is further covered with a microporous waterproof and breathable membrane 104, and the pore size of the microporous waterproof and breathable membrane 104 is ≤0.2μm, which can block liquid water but allow water vapor to pass through.

[0047] In this embodiment: the microporous waterproof and breathable membrane 104 gives the case 1 excellent waterproof and breathable performance. The microporous structure can effectively block the intrusion of liquid water, ensuring that the items inside the case remain dry and protected from moisture even in rainy or humid environments. At the same time, it allows water vapor to pass through, ensuring air circulation inside the case and avoiding odor and dampness problems caused by poor air circulation, further improving the user experience of the suitcase.

[0048] As a preferred embodiment, based on the above method, the box body 1 is further provided with an anti-collision connector 6, the cross-section of the anti-collision connector 6 is arc-shaped, and the anti-collision connector 6 is provided with a reinforcing rib 7. The anti-collision connector 6 is made of TPU material, and the reinforcing rib 7 is made of glass fiber.

[0049] In this embodiment: a collision-resistant connector 6 is provided inside the housing 1. The cross-section of the collision-resistant connector 6 is arc-shaped, which can better disperse stress when subjected to external impact. It is also equipped with a reinforcing rib 7 inside. The collision-resistant connector 6 is made of TPU material, which has good elasticity and toughness and can effectively absorb collision energy. The reinforcing rib 7 is made of glass fiber, which has high strength and rigidity and is used to enhance the overall strength of the collision-resistant connector 6, thereby greatly improving the collision-resistant performance inside the housing 1.

[0050] In a preferred embodiment, based on the above method, the pull rod assembly 5 further includes a fixing member 501, which is fixedly installed inside the housing 1. Lower rods 502 are fixedly installed on both sides of the upper surface of the fixing member 501, and upper rods 503 are slidably connected inside the lower rods 502. Plastic handles 505 are engaged at the top of the two upper rods 503. A limiting member 504 is installed on the upper surface of the housing 1, and the upper rods 503 are slidably connected to the limiting member 504.

[0051] In this embodiment: the fixing member 501 is fixedly installed inside the housing 1, and lower rods 502 are fixed on both sides of its upper surface. The upper rods 503 are slidably connected inside the lower rods 502. The sliding design allows the user to flexibly adjust the length of the pull rod according to their needs. The plastic handles 505 that engage at the top of the two upper rods 503 are easy to grip. The limiting member 504 installed on the upper surface of the housing 1 is slidably connected to the upper rods 503, which can effectively limit the sliding of the pull rod. The pull rod is designed as a two-section pull rod. Compared with the common three-section pull rod, the two-section pull rod structure is simpler. While ensuring the adjustment function, it reduces the number of parts, reduces the possibility of failure, and further improves the stability and reliability of the pull rod assembly.

[0052] As a preferred embodiment, based on the above method, both the lower rod 502 and the upper rod 503 are made of aluminum alloy.

[0053] In this embodiment, aluminum alloy has significant advantages such as light weight, high strength, and corrosion resistance. This allows the pull rod assembly 5 to achieve a lightweight design while ensuring sufficient support strength, making it convenient for users to carry and operate. Moreover, the excellent corrosion resistance of aluminum alloy ensures that the pull rod assembly 5 can be used for a long time in various harsh environments without being easily damaged, effectively extending its service life and further improving the overall quality and reliability of the suitcase.

[0054] The above is the entire working process of the device, and all contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0055] The above embodiments are only used to illustrate the present utility model and are not intended to limit the technical solutions described in the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, the present utility model is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present utility model, and all technical solutions and improvements that do not depart from the spirit and scope of the utility model, are covered within the scope of the claims of the present utility model.

Claims

1. A durable trolley case shell and trolley case comprising a case body (1) characterised in that: The surface of the box (1) is provided with a box lock (2), and the two side surfaces of the box (1) are provided with a handle (3), the bottom of the box (1) is provided with a castor (4), and the upper part of one side of the box (1) is provided with a pull rod assembly (5); The box (1) comprises an outer scratch-resistant layer (101), an inner side of the outer scratch-resistant layer (101) is provided with an intermediate support layer (102), and an inner side of the intermediate support layer (102) is provided with an inner buffer layer (103), the outer scratch-resistant layer (101), the intermediate support layer (102) and the inner buffer layer (103) are integrated by a co-extrusion molding process.

2. The rugged trolley case shell and trolley case of claim 1, wherein: The outer scratch-resistant layer (101) is made of high-density polycarbonate material, and the thickness is 1.0-1.5mm.

3. The rugged trolley case shell and trolley case of claim 1, wherein: The intermediate support layer (102) is a honeycomb aluminum alloy structure, and the thickness is 2.5-3.5mm.

4. The rugged trolley case shell and trolley case of claim 1, wherein: The inner buffer layer (103) is made of thermoplastic polyurethane elastomer material, and the thickness is 0.5-1.0mm.

5. The rugged trolley case shell and trolley case of claim 1, wherein: The outer surface of the outer scratch-resistant layer (101) is covered with a microporous waterproof and breathable film (104), and the pore size of the microporous waterproof and breathable film (104) is ≤0.2μm, which can block liquid water but allow water vapor to pass through.

6. The rugged trolley case shell and trolley case of claim 1, wherein: The inside of the box (1) is provided with an anti-collision connecting piece (6), the cross section of the anti-collision connecting piece (6) is arc-shaped, the inside of the anti-collision connecting piece (6) is provided with a reinforcing rib (7), the anti-collision connecting piece (6) is made of TPU material, and the reinforcing rib (7) is made of glass fiber.

7. The rugged trolley case shell and trolley case of claim 6, wherein: The pull rod assembly (5) comprises a fixing piece (501), and the fixing piece (501) is fixedly installed in the inside of the box (1), the upper surface of the fixing piece (501) is fixedly installed with a lower rod (502) on both sides, the inside of the lower rod (502) is slidably connected with an upper rod (503), and the top of the two upper rods (503) is clamped with a plastic handle (505), the upper surface of the box (1) is provided with a limiting piece (504), and the upper rod (503) and the limiting piece (504) are slidably connected.

8. The rugged trolley case shell and trolley case of claim 7, wherein: The lower rod (502) and the upper rod (503) are made of aluminum alloy material.

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