A luggage case with a combined main frame

Abstract

The application discloses a luggage case with a combined main rubber frame, which comprises a luggage case body, a rubber frame body, a sewn rubber strip and a lining, and the rubber frame body is composed of edge strips and corner pieces which are spliced with each other, and the core improvement lies in that a three-section type covering shielding piece of a top plate, an outer plate and an inner plate is assembled on the corner piece, the outer plate is detachably connected with the corner piece through a symmetrical clamping structure, can completely cover the splicing joint of the edge strip and the corner piece, and is convenient to disassemble and assemble to clean the lining; the edge strip is integrally formed with a rectangular hollow reinforcing structure at the top and the bottom, the corner piece is provided with a plug-in piece with a matching section and a guide section, the plug-in piece is in interference fit with the hollow reinforcing structure to form double supports, the scheme not only retains the modularization advantage of the combined rubber frame (reduces mold and maintenance costs), but also improves the sealing and protection and the structural stability through the shielding piece and the double plug-in cooperation, simultaneously adapts to the rectangular inner cavity of the luggage case, does not occupy the storage space, and is suitable for the main body support of luggage cases of various sizes.

Description

Technical Field

[0001] This utility model relates to the field of luggage accessories technology, specifically to a luggage with a modular main frame. Background Technology

[0002] The main frame of a suitcase is the core supporting component of the suitcase structure. It not only needs to bear the overall weight of the suitcase and protect the contents, but also needs to ensure compatibility with the suitcase shell, pull rod, wheels, and other components, while also considering ease of assembly and aesthetic integrity. Currently, the mainstream designs for suitcase main frames fall into two main categories:

[0003] One type is the one-piece molded frame, which is injection molded in one go. While this solution can ensure the stability of the overall frame structure, it has obvious drawbacks: First, the mold cost is high, as different sizes and specifications of suitcases require the development of corresponding molds, resulting in high production costs; second, transportation and storage are inconvenient, as the one-piece molded frame has a fixed volume and cannot be folded or disassembled, taking up a lot of space and increasing logistics costs; third, maintainability is poor, as the entire frame needs to be replaced when partially damaged, increasing user costs.

[0004] Another type is the modular frame, which uses side strips, corner pieces, and other modules to form a complete frame, thus addressing the drawbacks of one-piece molding. For example, Chinese invention patent No. 2025105001795, "A Modular Main Frame for a Suitcase," discloses a modular structure assembled using side strips and corner pieces, which reduces mold costs and transportation difficulties to some extent. However, this existing technology still has room for improvement.

[0005] 1. Due to the elasticity of the material, the edge strip is prone to dimensional errors during cutting and processing, resulting in obvious gaps at the joint with the corner pieces. Existing solutions lack effective covering and sealing designs. These gaps not only damage the overall aesthetics of the suitcase, but also easily accumulate dust, hair and other debris.

[0006] 2. The hybrid positioning method of "top insertion and bottom positioning plate" used in the existing technology has a natural difference in the matching accuracy of the two positioning structures, which can easily lead to flatness deviation of the connection surface between the edge strip and the corner piece; and the uneven distribution of the upper and lower stress points can easily cause the connection parts to loosen or misalign in actual use scenarios such as frequent lifting and bumping of the suitcase, reducing the overall support performance of the frame.

[0007] In summary, existing main plastic frames for suitcases still have significant room for improvement in the core dimensions of "sealing and concealing seams" and "flatness and stability of corner pieces and edge strips." There is an urgent need for a combined main plastic frame solution that balances aesthetic integrity and structural stability. Summary of the Invention

[0008] This utility model aims to solve one of the technical problems existing in the prior art.

[0009] This application provides a suitcase with a modular main frame, including a suitcase, a frame body, sewing strips and a lining. The frame body includes several side strips and corner pieces that are spliced ​​together, and also includes a cover on the corner pieces, which includes a top plate and an outer plate that are connected to each other for covering the splice seam between the first joint and the side strips.

[0010] An inner panel is fixedly installed at the bottom of the top panel. The inner panel, together with the top panel and the outer panel, forms a covering structure and is assembled onto the corner pieces.

[0011] The outer panel and the outer wall of the corner piece are detachably connected by a snap-fit ​​structure.

[0012] The locking structure includes a slot on the outer side wall of the corner piece and a locking block fixed on the inner side wall of the outer plate; when the top plate is attached to the top wall of the corner piece, the locking block and the slot are matched and locked.

[0013] Both the latches and the blocks are provided in pairs, with the latches located at both ends of the corner piece and the blocks located at both ends of the outer plate.

[0014] The top rim is installed on the side of the main frame facing the inside of the suitcase via an interlocking structure, and the lining hangs down to cover the inside of the seams of the side strips and corner pieces.

[0015] The corner piece has a groove on the side wall facing the interior of the suitcase, which is used to accommodate the inner panel.

[0016] The bottom and top of the edge strip are integrally formed with a hollow reinforcing structure, and the bottom and top of the corner pieces are provided with plug-in parts that are compatible with the hollow reinforcing structure.

[0017] The cross-section of the hollow reinforcing structure is a long rectangle, and the upper hollow reinforcing structure and the lower hollow reinforcing structure extend in different directions.

[0018] The connector includes a mating section and a guide section that are connected to each other. The end of the mating section is fixed to the corner piece, and the peripheral wall is interference-fitted with the inner cavity of the hollow reinforced structure. The area of ​​the guide section connecting one end of the mating section is larger than the area of ​​the other end.

[0019] The beneficial effects of this utility model are as follows:

[0020] 1. The three-section covering of the corner fittings (top panel, outer panel, and inner panel), along with the drooping lining, completely covers the seams between the edge strips and corner fittings. This effectively prevents dust, moisture, hair, and other foreign objects from entering the luggage, reducing the risk of lining contamination and metal component corrosion, and extending the lifespan of the frame and the entire luggage. At the same time, it eliminates uneven seam marks on the frame surface, making the outer surface smooth and continuous, enhancing the visual quality of the luggage, meeting the consumer market's demand for an "integrated appearance," and significantly improving sealing protection and appearance integrity.

[0021] 2. The outer panel and corner fittings adopt a symmetrical snap-fit ​​structure of "snap-lock" which can be operated without tools by "aligning and pressing to install and prying to disassemble", which is convenient for cleaning the lining and inspecting the seams. In addition, the modular design of the edge strips and corner fittings supports partial replacement. When the edge strips are scratched or the corner fittings are damaged, it is not necessary to disassemble the entire frame. Only the corresponding parts need to be replaced. Ordinary users can complete the maintenance operation independently, which improves the convenience of disassembly and maintenance.

[0022] 3. The rectangular hollow reinforced structure with the top and bottom of the side strip is integrally formed. The double-interlocking fit between the corner pieces and the side strip, and the interference fit between the interlocking pieces and the hollow structure, enhance the overall support performance of the frame body, prevent the side strip from being misaligned and the frame from being deformed when the suitcase is lifted or loaded with heavy objects, and improve the flatness and connection strength at the connection between the corner pieces and the side strip.

[0023] 4. The guide section design of the connector can quickly align with the hollow structure of the edge strip without repeated adjustments, thus shortening the assembly time on the production line.

[0024] 5. The recessed corner fittings and the inner panel are fitted together to prevent the inner panel from protruding into the cavity, thus not occupying storage space and avoiding friction damage to the lining, ensuring a flat and snug fit of the lining and maximizing the utilization of storage space. Attached Figure Description

[0025] Figure 1 This is a perspective view of a suitcase with a combined main frame installed in an embodiment of this application.

[0026] Figure 2 for Figure 1 A magnified view of the structure at point A in the middle;

[0027] Figure 3 This is a partial perspective view of a suitcase with a combined main plastic frame in an embodiment of this application.

[0028] Figure 4 This is a partial perspective view of a suitcase with a combined main plastic frame in an embodiment of this application.

[0029] Figure 5 This is a perspective view of the corner piece in an embodiment of this application;

[0030] Figure 6 This is a perspective view of the shielding component in the embodiments of this application;

[0031] Figure 7 This is a cross-sectional view of the combined main plastic frame of the suitcase in an embodiment of this application.

[0032] Figure Labels

[0033] 100-Luggage box, 200-Plastic frame body, 300-Sewing adhesive strip, 400-Liner, 1-Side strip, 2-Corner piece, 3-Blinding piece, 31-Top plate, 32-Outer panel, 33-Inner panel, 41-Barrel, 42-Barrel block, 6-Hollow reinforcing structure, 7-Plug-in piece, 71-Matching section, 72-Guide section, 8-Groove, 91-Card slot, 92-Slot, 93-Card strip, 94-Plug plate. Detailed Implementation

[0034] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0035] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0036] The following description, in conjunction with the accompanying drawings, details the suitcase with a modular main frame provided in this application through specific embodiments and application scenarios.

[0037] Example 1:

[0038] This application provides a suitcase with a combined main frame, including a suitcase 100, a frame body 200, a sewing adhesive strip 300, and a lining 400. The frame body 200 includes several side strips 1 and corner pieces 2 spliced ​​together, and also includes a covering member 3 provided on the corner piece 2, which includes a top plate 31 and an outer plate 32 connected to each other, for covering the splice seam between the first insertion and the side strips 1.

[0039] In this embodiment of the application, an inner plate 33 is fixedly provided at the bottom of the top plate 31. The inner plate 33 cooperates with the top plate 31 and the outer plate 32 to form a covering structure and is assembled on the corner piece 2.

[0040] like Figures 1 to 7As shown, due to the above structure, the shielding component 3 can precisely fit with the corner piece 2 through the three-section covering structure of "top plate 31-outer plate 32-inner plate 33": During installation, the side strip 1 and the corner piece 2 are first spliced ​​to form the basic frame body 200. At this time, a gap will be formed at the splicing point of the side strip 1 and the corner piece 2. Then, the inner plate 33 of the shielding component 3 is aligned with the inside of the corner piece 2, the outer plate 32 is attached to the outside of the corner piece 2, and the top plate 31 covers the top wall of the corner piece 2, so that the corner piece 2 is completely sandwiched and wrapped by the outer plate 32 and the inner plate 33. On the one hand, the top plate 31 and the outer plate 32 can completely cover the seam between the side strip 1 and the corner piece 2, preventing dust, hair or liquid from entering the interior of the suitcase 100 through the gap, reducing the risk of contamination of the lining 400 and corrosion of components. On the other hand, the covering fit makes the outer surface of the frame without obvious splicing marks, significantly improving the visual integrity and texture of the suitcase 100. Meanwhile, the modular design of the edge strip 1 and corner piece 2 still retains the advantage of "partial replacement". If the edge strip 1 is scratched or the corner piece 2 is damaged, there is no need to disassemble the entire frame. The corresponding parts can be replaced individually, which greatly reduces the user's maintenance costs.

[0041] Example 2:

[0042] In this embodiment, in addition to the structural features included in the aforementioned embodiments, the outer plate 32 and the outer side wall of the corner piece 2 are detachably connected by a snap-fit ​​structure.

[0043] In this embodiment of the application, the engaging structure includes a slot 41 opened on the outer side wall of the corner piece 2, and a locking block 42 fixedly provided on the inner side wall of the outer plate 32; when the top plate 31 is attached to the top wall of the corner piece 2, the locking block 42 and the slot 41 are adapted to engage.

[0044] In this embodiment of the application, a pair of bayonet 41 and bayonet block 42 are provided, with bayonet 41 located at both ends of corner piece 2 and bayonet block 42 located at both ends of outer plate 32.

[0045] like Figures 3 to 7 As shown, due to the above structure, the connection between the outer panel 32 and the corner piece 2 can be completed through a convenient "alignment-pressing" operation. When installing the cover 3, simply align the outer panel 32 and the inner panel 33 with the outer and inner sides of the corner piece 2 respectively, and gently press the middle of the outer panel 32 until the top panel 31 fits against the top wall of the corner piece 2, so that the locking block 42 of the outer panel 32 aligns with the locking slot 41 of the corner piece 2. The locking block 42 will then be embedded into the locking slot 41 due to the elastic deformation of the outer panel 32. When disassembling, simply pry the two ends of the outer panel 32 outward, and the locking block 42 can be disengaged from the locking slot 41. When stains appear inside the suitcase 100 and the lining 400 needs to be cleaned, or when the sealing status of the joint between the corner piece 2 and the edge strip 1 needs to be checked, the cover 3 can be quickly disassembled and installed. At the same time, the symmetrical arrangement of a pair of locking slots 41 and locking blocks 42 can form a two-way limit, preventing the cover 3 from falling off due to unilateral force (such as the squeezing when the suitcase 100 is placed on its side), and ensuring the stability of the connection.

[0046] Example 3:

[0047] In this embodiment, in addition to the structural features of the aforementioned embodiments, the top opening of the lining 400 is installed on the side of the top of the frame body 200 facing the inside of the suitcase 100 via a plug-in structure, and the drooping part of the lining 400 covers the inside of the seam between the edge strip 1 and the corner piece 2.

[0048] In this embodiment of the application, the plug-in structure includes a slot 92 disposed on the top of the frame body 100 and having a card groove 91, and an insert plate 94 fixed to the rim 400 with a card strip 93. The insert plate 94 is adapted to be plugged into the slot 92, and the card strip 93 is adapted to be plugged into the card groove 91.

[0049] like Figure 7 As shown, due to the above-mentioned structure, the assembly and splicing seam protection of the lining 400 and the frame body 200 are further optimized: On the one hand, the lining 400 achieves a stable connection with the top of the frame body 200 through the matching insertion of the "insert plate 94-slot 92" and the double engagement of the "strip 93-slot 91"—the insert plate 94 can quickly complete the initial positioning by inserting into the slot 92, and the precise engagement of the strip 93 and the slot 91 can prevent the lining 400 from shifting or falling off during the lifting and bumping of the suitcase 100, and the lining 400 can be disassembled without the need for tools by "applying external force to separate the engagement and pull out the insert plate 94", which is convenient for users to remove the lining 400 for cleaning regularly. On the other hand, the drooping part of the lining 400 The inner side of the seam between the edge strip 1 and the corner piece 2 is naturally covered, and together with the top plate 31 and the outer plate 32, the seam between the edge strip 1 and the corner piece 2 is completely covered, completely preventing foreign objects such as dust, hair, and liquids from entering the interior of the suitcase 100 from the inside of the seam. This not only prevents foreign objects from contaminating the lining 400 or corroding the frame body 200, but also prevents the sharp edges on the inside of the seam from rubbing against the lining 400 and causing damage, thus extending the service life of the lining 400. At the same time, the covering effect of the lining 400 makes there no obvious splicing marks on the inside of the frame body 200, forming a flat and continuous usable space with the interior of the suitcase 100, improving the user's storage experience, and does not take up extra storage volume in the interior, meeting the design requirements of "balancing protection and space utilization".

[0050] Example 4:

[0051] In this embodiment, in addition to the structural features included in the aforementioned embodiments, the corner piece 2 has a groove 8 on one side wall facing the inner cavity of the suitcase 100, and the groove 8 is used to accommodate the inner panel 33.

[0052] In this embodiment of the application, a number of reinforcing ribs are fixed on the side wall of the inner plate 33 facing the inner cavity of the suitcase 100.

[0053] like Figures 3 to 7As shown, due to the above-mentioned structure, the groove 8 of the corner piece 2 is designed to form an "embedded fit" with the inner panel 33. The depth of the groove 8 on the side wall of the corner piece 2 facing the inner cavity is the same as the thickness of the inner panel 33 with reinforcing ribs. When the cover piece 3 is installed, the inner panel 33 will be completely embedded in the groove 8. It will not protrude into the inner cavity of the suitcase 100 and occupy storage space, nor will it rub against the lining 400 and cause damage to the lining 400, ensuring that the lining 400 can be flat and fit the inner side of the frame. At the same time, the several reinforcing ribs integrally formed on the side wall of the inner panel 33 facing the inner cavity (preferably evenly distributed along the length of the inner panel 33) can greatly improve the bending strength of the inner panel 33. When the user carries the suitcase 100 or the suitcase 100 is subjected to a side impact, the reinforcing ribs can disperse the external force and prevent the inner panel 33 from deforming and squeezing the internal items due to the force.

[0054] Example 5:

[0055] In this embodiment, in addition to the structural features of the aforementioned embodiments, the bottom and top of the edge strip 1 are integrally formed with a hollow reinforcing structure 6, and the bottom and top of the corner piece 2 are provided with plug-in pieces 7 adapted to the hollow reinforcing structure 6.

[0056] In this embodiment of the application, the cross-section of the hollow reinforcing structure 6 is a long rectangle, and the upper hollow reinforcing structure 6 and the lower hollow reinforcing structure 6 extend in different directions.

[0057] like Figures 3 to 7 As shown, due to the above structure, the connection between the side strip 1 and the corner piece 2 forms a stable "double support" structure: the cross-sectional shape (rectangular) of the plug-in 7 at the bottom and top of the corner piece 2 is perfectly matched with the inner cavity of the hollow reinforcing structure 6. During installation, the plug-in 7 can be precisely inserted along the inner cavity of the hollow structure, avoiding left and right offset of the side strip 1 and the corner piece 2. This design solves the problem of "inaccurate positioning of the side strip 1 and the corner piece 2 and easy misalignment under the force" in the existing combined plastic frame: the double plug-in 7 can limit the side strip 1 from the top and bottom at the same time, preventing the side strip 1 from sliding up and down along the corner piece 2 when the suitcase 100 is lifted, thus improving the overall support performance of the plastic frame and making it suitable for scenarios where heavy items are loaded.

[0058] The upper hollow reinforcing structure 6 and the lower hollow reinforcing structure 6 are set perpendicular to each other, forming a "longitudinal-lateral" cross support system: the upper structure is distributed along the length of the side strip 1, mainly bearing the pressure of items on the top of the suitcase 100 and the longitudinal pulling force when lifting; the lower structure is distributed along the width of the side strip 1, mainly resisting the impact of the ground at the bottom and the lateral collision force when the suitcase 100 is placed. This vertical layout can distribute the external force to different directions of the side strip 1, avoiding the loosening of the connection between the side strip 1 and the corner piece 2 caused by the concentration of force in a single direction, and further solving the problem of "uneven force distribution and easy misalignment" in the existing combined plastic frame.

[0059] Example 6:

[0060] In this embodiment, in addition to the structural features of the aforementioned embodiments, the connector 7 includes a mating section 71 and a guiding section 72 that are connected to each other. The end of the mating section 71 is fixed to the corner piece 2, and the peripheral wall is interference-fitted with the inner cavity of the hollow reinforcing structure 6. The area of ​​the guiding section 72 connecting one end of the mating section 71 is larger than the area of ​​the other end.

[0061] In this embodiment of the application, the mating section 71 is interference-fitted with the inner cavity of the hollow reinforcing structure 6.

[0062] like Figures 3 to 7 As shown, due to the above-mentioned structure, the segmented design and interference fit of the "guide section 72-fitting section 71" of the connector 7 greatly optimizes the assembly experience and connection stability: the guide section 72 of the connector 7 has a "conical transition" (the end connected to the fitting section 71 has a large area, and the end away from the fitting section 71 has a small area). During installation, the guide section 72 can be inserted into the hollow reinforcing structure 6 of the side strip 1 first, and the inner cavity can be quickly aligned through the guiding effect of the conical surface, without the need to repeatedly adjust the position of the side strip 1 and the corner piece 2. The interference fit between the fitting section 71 and the inner cavity of the hollow reinforcing structure 6 can form a "gap-free connection" after insertion. Even if the suitcase 100 is frequently bumped during transportation, the fitting section 71 can fix the side strip 1 due to the friction generated by the interference, avoiding loosening and abnormal noise between the side strip 1 and the corner piece 2.

[0063] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0064] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A suitcase with a modular main frame, comprising a suitcase, a frame body, sewing tape, and a lining, wherein the frame body comprises several interlocking side strips and corner pieces, characterized in that, It also includes a shielding member installed on the corner piece, which includes an interconnected top plate and an outer plate, for covering the joint between the corner piece and the edge strip; An inner plate is fixedly provided at the bottom of the top plate. The inner plate, together with the top plate and the outer plate, forms a covering structure and is assembled on the corner piece. The outer panel and the outer wall of the corner piece are detachably connected by a snap-fit ​​structure; The locking structure includes a slot on the outer side wall of the corner piece, and a locking block is fixed on the inner side wall of the outer plate; when the top plate is attached to the top wall of the corner piece, the locking block and the slot are matched and locked.

2. A suitcase with a modular main frame according to claim 1, characterized in that, The bayonet and the locking block are provided in pairs, with the bayonet located at both ends of the corner piece and the locking block located at both ends of the outer plate.

3. A suitcase with a combined main plastic frame according to claim 1, characterized in that, The top opening of the lining is installed on the side of the top of the frame body facing the inside of the suitcase via a plug-in structure, and the hanging part of the lining covers the inside of the edge strip and corner splice seam.

4. A suitcase with a modular main frame according to claim 1, characterized in that, The corner piece has a groove on the side wall facing the inner cavity of the suitcase, and the groove is used to accommodate the inner panel.

5. A suitcase with a combined main plastic frame according to any one of claims 1-4, characterized in that, The bottom and top of the edge strip are integrally formed with a hollow reinforcing structure, and the bottom and top of the corner piece are provided with plug-in parts adapted to the hollow reinforcing structure.

6. A suitcase with a combined main plastic frame according to claim 5, characterized in that, The cross-section of the hollow reinforcing structure is a long rectangle, and the upper hollow reinforcing structure and the lower hollow reinforcing structure extend in different directions.

7. A suitcase with a combined main plastic frame according to claim 6, characterized in that, The connector includes a mating section and a guiding section that are connected to each other. The end of the mating section is fixed to the corner piece, and the peripheral wall is interference-fitted with the inner cavity of the hollow reinforcing structure. The area of ​​the guiding section at one end of the mating section is larger than the area at the other end.

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