Box body connecting structure and luggage box

Abstract

The utility model provides a box body connecting structure and a luggage box. The box body connecting structure comprises a connecting piece, a box shell and a coupling piece. Wherein one end of the connecting piece is provided with a first clamping part, and the other end of the connecting piece is connected with an outer zipper or a hinge which is used for connecting the box shell with another box shell to form a complete box body. An assembling through hole is formed in the box shell. The coupling piece is provided with a second clamping part, and the first clamping part penetrates through the assembling through hole to be clamped with the second clamping part located on the other side of the assembling through hole. According to the utility model, the box body connecting structure is detachably designed, so that the limitation of the traditional sewing process is broken through, the assembly process is simplified, and the compatibility of the box body to different connecting pieces is improved.

Description

Technical Field

[0001] This utility model relates to the field of luggage connection technology, and in particular to a luggage body connection structure and a suitcase. Background Technology

[0002] In the actual production of bags and luggage, the industry currently widely adopts sewing technology, where zippers, linings, and the outer shell are tightly fixed together by hand. However, this process is labor-intensive, increasing labor costs and the complexity of the production process. Furthermore, the limitations of manual operation make it difficult to guarantee product consistency. Generally speaking, the larger the bag size, the higher the sewing difficulty and the higher the defect rate. Automated assembly is one of the future development directions in this field, making further improvements to the bag's connection structure necessary to adapt to automated assembly production. Summary of the Invention

[0003] This utility model provides a box-type connection structure to achieve the above objectives. It breaks through the traditional method of irreversibly fixing zippers or hinges to the box shell in bag production, reducing assembly difficulty and enabling automated production. The specific technical solution is as follows:

[0004] A box-type connection structure includes a connector, a box shell, and a coupling member. One end of the connector is provided with a first snap-fit ​​portion, and the other end of the connector is connected to an external zipper or hinge for connecting the box shell to another box shell to form a complete box. The box shell is provided with an assembly through hole. The coupling member is provided with a second snap-fit ​​portion, and the first snap-fit ​​portion passes through the assembly through hole and snaps with the second snap-fit ​​portion located on the other side of the assembly through hole.

[0005] As a further improvement and refinement of this utility model, the housing includes a first side wall, a second side wall, and a first crossbeam, and the assembly through hole is formed on the first crossbeam.

[0006] As a further improvement and refinement of this utility model, the first snap-fit ​​portion has a protrusion and the second snap-fit ​​portion has a groove, or the first snap-fit ​​portion has a groove and the second snap-fit ​​portion has a protrusion, wherein the protrusion is inserted into the groove to achieve snap-fit ​​between the first snap-fit ​​portion and the second snap-fit ​​portion.

[0007] As a further improvement and refinement of this utility model, the protrusion is a trapezoidal protrusion, a T-shaped protrusion, or a circular protrusion, and the groove is a trapezoidal groove, a T-shaped groove, or a circular groove that mates with the protrusion.

[0008] As a further improvement and refinement of this utility model, a locking hole is provided on the side of the first locking part, and a locking hook is provided on the inner wall of the second side wall or the first side wall. After the first locking part passes through the assembly through hole, the locking hook engages with the locking hole.

[0009] As a further improvement and refinement of this utility model, the first snap-fit ​​part and the second snap-fit ​​part are respectively provided with pin holes, and the housing connection structure also includes a pin. After the first snap-fit ​​part and the second snap-fit ​​part are snapped together, the pin passes through the pin hole.

[0010] As a further improvement and refinement of this utility model, the housing also includes a second crossbeam, which is offset from the first crossbeam and has an assembly through hole. When the first snap-fit ​​part and the second snap-fit ​​part pass through the corresponding assembly through hole, the ends of the first snap-fit ​​part and the second snap-fit ​​part respectively abut against the upper surface of the first crossbeam and the lower surface of the second crossbeam.

[0011] As a further improvement and refinement of this utility model, the other end of the connector is connected to an external zipper, the cross-section of the box shell is H-shaped, Z-shaped or L-shaped, and the outer side of the second side wall is the outer surface of the box shell.

[0012] As a further improvement and refinement of this utility model, the other end of the connector is connected to a hinge, and the connector has a protrusion or a top groove at the end away from the coupling member, and a waterproof adhesive strip is provided at the protrusion or top groove.

[0013] As a further improvement and refinement of this utility model, the coupling member is provided with a boss or a tooth at the end away from the connector, and the second sidewall is provided with a recess at the end away from the connector that mates with the boss or tooth.

[0014] As a further improvement and refinement of this utility model, the connector extends towards the first sidewall at the end away from the coupling member to form an inner groove for installing an inner zipper.

[0015] This utility model also provides a suitcase, which includes the above-described suitcase body connection structure.

[0016] The beneficial effects of this utility model are:

[0017] As can be seen from the above technical solution, the box connection structure provided by this utility model has a detachable connection between its connectors, box shell, and coupling components, which has at least the following beneficial effects:

[0018] 1. Traditional zipper installation in bags relies on inefficient sewing processes. Furthermore, the shape of the bag necessitates constant flipping during sewing, further limiting zipper connection efficiency. Unlike existing zipper installation methods that rely on manual sewing, this invention uses a connector where one end connects to the zipper, and the other end's first locking part complements the second locking part of the coupling component. Combined with the lateral engagement of the coupling component, this allows for rapid attachment of the zipper to the bag shell. Since both the zipper and the connector are straight, the zipper and connector connections can be completed in batches before assembly onto the bag. The connector, now with the zipper attached, is then snapped onto the bag shell using a snap-fit ​​method, achieving rapid attachment of the zipper. This application achieves high standardization in assembly and high product stability through the snap-fit ​​method, while reducing assembly difficulty and improving production efficiency.

[0019] 2. Compared to the limitations of existing technologies where the snap-fit ​​part has a single shape, resulting in limited adaptability, the first snap-fit ​​part of this invention can be flexibly designed as a protrusion or a groove, and the second snap-fit ​​part is a corresponding matching groove or protrusion. Furthermore, the snap-fit ​​part can be designed in various shapes (such as trapezoidal, T-shaped, and circular), allowing users to choose according to their specific needs, thus effectively overcoming the limitation of adaptability.

[0020] 3. Traditional sewing techniques, heavily reliant on skilled workers, have become a bottleneck in the automated production of zippered cases. This invention overcomes the biggest obstacle to automated production of zippered cases by employing a snap-fit ​​structure and a pin-fixing structure, facilitating the automation of bag production. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of a box connection structure provided by this utility model;

[0023] Figure 2 yes Figure 1 Schematic diagram of the middle shell structure;

[0024] Figure 3A This is a schematic diagram of a box connection structure provided by this utility model;

[0025] Figure 3B This is a schematic diagram of another box connection structure provided by this utility model;

[0026] Figure 4A This is a schematic diagram of another box connection structure provided by this utility model;

[0027] Figure 4B This is a schematic diagram of another box connection structure provided by this utility model;

[0028] Figure 5A This is an exploded view of a box connection structure provided by this utility model;

[0029] Figure 5B yes Figure 5A A sectional view of the assembly drawing of the middle box body connection structure;

[0030] Figure 6A This is an exploded view of another box connection structure provided by this utility model;

[0031] Figure 6B yes Figure 6A A sectional view of the assembly drawing of the middle box body connection structure;

[0032] Figure 7A This is an exploded view of another box connection structure provided by this utility model;

[0033] Figure 7B yes Figure 7A A sectional view of the assembly drawing of the middle box body connection structure;

[0034] Figure 8A This is an exploded view of another box connection structure provided by this utility model;

[0035] Figure 8B yes Figure 8A A sectional view of the assembly drawing of the middle box body connection structure;

[0036] Figure 9A This is an exploded view of another box connection structure provided by this utility model;

[0037] Figure 9B yes Figure 9A A sectional view of the assembly drawing of the middle box body connection structure;

[0038] Figure 10A This is a schematic diagram of another box connection structure provided by this utility model;

[0039] Figure 10B This is a schematic diagram of another box connection structure provided by this utility model;

[0040] Figure 11 This is a schematic diagram of a suitcase provided by this utility model;

[0041] Figure 12 This is a schematic diagram of a box connection structure with an internal groove.

[0042] Figure 13 This is a cross-sectional view of the H-shaped box shell provided by this utility model;

[0043] Figure 14 This is a cross-sectional view of the Z-shaped box shell provided by this utility model;

[0044] Figure 15 This is a cross-sectional view of the L-shaped box shell provided by this utility model.

[0045] The symbols for the main components are explained below:

[0046] Connector 10; First snap-fit ​​part 11; Snap-fit ​​hole 111; Inner groove 12; Protrusion 131; Groove 132; Protrusion 141; Top groove 142;

[0047] Box shell 20; assembly through hole 201; first side wall 21; second side wall 22; hook 221; boss or barb 222; first crossbeam 23; second crossbeam 24;

[0048] Coupler 30; Second snap-fit ​​part 31;

[0049] Pin 40; pin hole 41; outer zipper 50; hinge 60; inner zipper assembly 70; waterproof adhesive strip 80.

[0050] The distance from the innermost side of the first sidewall to the outermost sidewall of the A1-H type enclosure;

[0051] The distance from the outermost edge of the first sidewall to the outermost edge of the second sidewall of the A2-H type enclosure;

[0052] The distance from the innermost side of the first side wall to the outermost side wall of the A3-Z type enclosure;

[0053] The distance from the outermost edge of the first sidewall to the outermost edge of the second sidewall of the A4-Z type enclosure;

[0054] The distance from the innermost side of the first side wall of the A5-L type box shell to the outermost side of the first crossbeam;

[0055] The distance from the outermost edge of the first side wall of the A6-L type enclosure to the outermost edge of the first crossbeam;

[0056] The distance from the top of the first side wall to the bottom of the second side wall of the H1-H type enclosure;

[0057] The distance from the top of the second side wall of the H2-H type box shell to the top of the first crossbeam;

[0058] The distance from the bottom of the first crossbeam to the bottom of the second side wall of the H3-H type box shell;

[0059] The distance from the top of the second side wall to the bottom of the second side wall of the H4-H type enclosure;

[0060] The distance from the top of the second side wall of the H5-Z type box shell to the bottom of the first crossbeam. Detailed Implementation

[0061] This invention provides a box-type connection structure that achieves a secure installation of the external zipper or hinge on the box shell through the snap-fit ​​cooperation of connectors, couplings, and pins. This invention improves assembly convenience and enhances the box's compatibility with different connectors.

[0062] Before detailing the specific technical solutions of this utility model, it is necessary to explain the fixing process between the connector and the outer zipper. Depending on the material of the connector, the following fixing techniques mainly exist:

[0063] 1. The connectors are made of plastic:

[0064] (1) Sewing and fixing process: The plastic connector and the zipper tape are precisely sewn together using industrial sewing equipment to form a non-removable composite structure;

[0065] (2) Melt molding process: The zipper is formed by covering the molten plastic material with the zipper through injection molding or extrusion molding technology;

[0066] (3) T-shaped assembly structure: The zipper is designed as a guide structure with a T-shaped cross section, which forms a mechanically interlocked assembly connection with the slot of the connector.

[0067] II. The connectors are made of metal:

[0068] (1) Embossing and riveting process: The zipper is inserted through the gap of the metal connector body, and then the surface of the entire metal connector is partially embossed (dented) using a jig. The local embossing deformation of the metal material is used to hold the zipper in place so that it cannot come out and becomes a whole with the metal connector.

[0069] (2) Structural constraint assembly: A T-shaped structure is added to the zipper. The T-shaped zipper is inserted through the gap of the metal connector body, so that the T-shaped zipper cannot come out vertically in the guide rail and becomes a whole with the metal connector.

[0070] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and the accompanying drawings. It should be understood that these embodiments are provided so that the present utility model meets applicable legal requirements, and the present utility model can be implemented in many different forms and should not be construed as limited to the embodiments set forth herein.

[0071] like Figure 1 and Figure 2As shown, this embodiment provides a box connection structure, including a connector 10, a box shell 20, and a coupling member 30. One end of the connector 10 has a first engaging portion 11, which has a protrusion 131 or a groove 132. The other end of the connector 10 is connected to an external zipper 50 for connecting the box shell 20 to another box shell 20 to form a complete box. The box shell 20 includes a first side wall 21, a second side wall 22, and a first crossbeam 23, with at least one mounting through hole 201 on the first crossbeam 23. The coupling member 30 has a second engaging portion 31 that engages with the first engaging portion 11. Further, if the first engaging portion 11 has a protrusion 131, the second engaging portion 31 is correspondingly configured with a groove 132 matching the protrusion 131; if the first engaging portion 11 has a groove 132, the second engaging portion 31 has a protrusion 131 matching the groove 132.

[0072] During assembly, the side of the connector 10 connected to the outer zipper 50 is aligned with the second side wall 22 of the case 20. The first snap-fit ​​portion 11 is inserted into the gap between the first side wall 21 and the second side wall 22 to pass through the assembly through hole 201. The coupling member 30 is inserted into the gap on the other side of the first crossbeam 23 in a direction parallel to the first side wall 21, the second side wall 22, and the first crossbeam 23, so that the protrusion 131 is inserted into the groove 132, thereby completing the fixation of the connector 10, the case 20, and the coupling member 30. In this embodiment, the quick connection between the outer zipper 50 and the case 20 can be achieved by the mutual engagement of the first snap-fit ​​portion 11 of the connector 10 and the second snap-fit ​​portion 31 of the coupling member 30, which greatly reduces the assembly difficulty of the outer zipper 50 and the case 20 and improves the assembly efficiency.

[0073] The first crossbeam 23 can have multiple assembly through holes 201. Correspondingly, the first snap-fit ​​portion 11 at one end of the connector 10 is also configured in multiple ways, and the second snap-fit ​​portion 31 on the coupling member 30 is also configured in multiple ways. Thus, each first snap-fit ​​portion 11 can pass through a corresponding assembly through hole 201 and snap-fit ​​with a corresponding second snap-fit ​​portion 31.

[0074] Furthermore, such as Figure 1 and Figures 3A-4B As shown, in this embodiment, the protrusion 131 of the first latching part 11 or the second latching part 31 is a trapezoidal protrusion, a T-shaped protrusion or a circular protrusion, and the groove 132 is a trapezoidal groove, a T-shaped groove or a circular groove that mates with the protrusion 131.

[0075] In some embodiments, such as Figure 5A and Figure 5BAs shown, the first snap-fit ​​part 11 has a snap-fit ​​hole 111 on the side facing the inner wall of the first side wall 21 or the inner wall of the second side wall 22, and a snap hook 221 is provided on the inner wall of the second side wall 22 or the first side wall 21. During assembly, the first snap-fit ​​part 11 passes through the assembly through hole 201. After the snap hook 221 engages with the snap hole 111, the coupling member 30 is inserted into the gap on the other side of the first crossbeam 23 in a direction parallel to the first side wall 21, the second side wall 22 and the first crossbeam 23, so that the protrusion 131 is inserted into the groove, thereby completing the fixing of the connector 10, the housing 20 and the coupling member 30.

[0076] In this embodiment, a locking hole 111 and a hook 221 structure are added. After the first engaging part 11 passes through the assembly through hole 201, the hook 221 engages with the locking hole 111, achieving precise positioning of the connector 10 on the housing 20, reducing assembly errors and improving assembly accuracy and reliability. Simultaneously, the engaging structure of the locking hole 111 and the hook 221, in conjunction with the existing engaging structure, forms a dual fixing mechanism, effectively enhancing the connection strength and stability between the connector 10, the housing 20, and the coupling part 30.

[0077] In some embodiments, such as Figure 6A and Figure 6B As shown, the housing connection structure also includes a pin 40, and the first snap-fit ​​part 11 and the second snap-fit ​​part 31 have pin holes 41 at corresponding positions. During assembly, after the first snap-fit ​​part 11 passes through the assembly through hole 201 on the first crossbeam 23, the second snap-fit ​​part 31 located on the other side of the assembly through hole 201 engages with the first snap-fit ​​part 11 in an alternating manner. Then, the pin 40 is inserted into the pin holes 41 on the first snap-fit ​​part 11 and the second snap-fit ​​part 31 to lock the connector 10, the housing 20 and the coupling part 30.

[0078] Furthermore, the cross-sectional shape of the pin 40 can be various shapes such as square, round, triangular, and irregular.

[0079] Furthermore, the material of the pin 40 can be plastic, silicone, fiber, or metal.

[0080] In some embodiments, such as Figure 7A and Figure 7BAs shown, in addition to the first crossbeam 23, a second crossbeam 24 is also provided between the first sidewall 21 and the second sidewall 22 in this embodiment. The second crossbeam 24 is arranged parallel to the first crossbeam 23. The second crossbeam 24 is offset from the first crossbeam 23 and has an assembly through hole 201. During assembly, the first snap-fit ​​part 11 of the connector 10 is first passed through the assembly through hole 201 of the first crossbeam 23, so that its end abuts against the upper surface of the second crossbeam 24 to complete the initial positioning. Then, the second snap-fit ​​part 31 of the coupling part 30 passes through the assembly through hole 201 of the second crossbeam 24 from the other side of the crossbeam, with its end abutting against the lower surface of the first crossbeam 23. Finally, the pin 40 passes through the pin holes 41 of the first snap-fit ​​part 11 and the second snap-fit ​​part 31 to lock the connector 10, the housing 20 and the coupling part 30.

[0081] In this embodiment, the double crossbeam design forms a closed frame across the box section, effectively improving the overall torsional stiffness of the box. When the box is subjected to torsional force, the connection nodes of the closed frame can evenly distribute the force to each component, significantly reducing the possibility of deformation of the box under heavy load or accidental drop. Simultaneously, the vertical pins 40 further enhance the torsional resistance of the connector 10, making it less prone to rotation and displacement under torsional force, thus effectively enhancing the overall torsional stiffness of the box.

[0082] In some embodiments, such as Figure 8A and Figure 8B As shown, the shell 20 has a Z-shaped cross-section. Specifically, the Z-shaped structure is formed by removing the portion of the first sidewall 21 above the first crossbeam 23 in the aforementioned H-shaped structure.

[0083] Specifically, the housing 20 includes a first side wall 21 and a second and a first crossbeam 23, with the first side wall 21 and the second side wall 22 located on both sides of the first crossbeam 23. During assembly, the first snap-fit ​​part 11 passes through the mounting through hole 201 on the first crossbeam 23, and the second snap-fit ​​part 31 located on the other side of the mounting through hole 201 engages with the first snap-fit ​​part 11 in an alternating manner. Then, the pin 40 passes through the pin hole 41 on the first snap-fit ​​part 11 and the second snap-fit ​​part 31 to lock the connector 10, the housing 20, and the coupling part 30.

[0084] In this embodiment, the Z-shaped housing 20 is suitable for factory prefabrication and standardized production, which helps to improve production efficiency and material utilization. Prefabrication allows for better control over material use and waste, while standardized production also helps reduce the diversity of material specifications and lower the costs of material procurement and inventory management.

[0085] In some embodiments, such as Figure 9A and Figure 9B As shown, the cross-section of the casing 20 is L-shaped.

[0086] Specifically, the housing 20 includes a first side wall 21 and a first crossbeam 23. Multiple assembly through holes 201 are provided at the junction of the first side wall 21 and the first crossbeam 23. During assembly, the first snap-fit ​​portion 11 of the connector 10 is placed against the first side wall 21 with its ends aligned. Then, the second snap-fit ​​portion 31, located on the other side of the first side wall 21, passes through the assembly through holes 201 and engages with the first snap-fit ​​portion 11 in an alternating manner. Finally, a pin 40 passes through the pin holes 41 on the first snap-fit ​​portion 11 and the second snap-fit ​​portion 31 to lock the connector 10, the housing 20, and the coupling member 30.

[0087] Furthermore, the cross-section of the case shell 20 can also be F-shaped or other shapes. The outer surface of the second sidewall is the outer surface of the case shell, that is, the outer surface of the suitcase.

[0088] In this embodiment, the opening is located at the junction of the first sidewall 21 and the first crossbeam 23. This allows for better utilization of the rigid structure of the box's sidewall and crossbeam, enabling the external force on the connector 10 after assembly to be transmitted to the overall box structure through a more efficient path. Simultaneously, the removal of the second sidewall 22 improves the box's usability, reduces the materials and processing steps required for box manufacturing, and lowers manufacturing costs.

[0089] In some embodiments, such as Figure 10A , 10B As shown, the other end of the connector 10 is connected to a hinge 60 for connecting the housing 20 to another housing 20 to form a complete housing. The connector 10 has a protrusion 141 or a top groove 142 at the end away from the coupling member 30, and a waterproof strip is provided at the protrusion 141 or the top groove 142.

[0090] Specifically, the connector 10 connected to the case shell 20 has a protrusion 141 at the end away from the coupling member 30, and the connector 10 connected to the other case shell has a top groove 142 at one end, with a waterproof adhesive strip 80 inside the top groove 142. During assembly, the protrusion 141 of the connector 10 is inserted into the top groove 142 of the connector 10 connected to the other case shell to complete the connection of the two case shells of the suitcase.

[0091] In this embodiment, by providing a nested structure of a protrusion 141 and a top groove 142 at the connection between the connector 10 and the other housing 20, and in conjunction with a waterproof adhesive strip 80, the sealing performance of the housing connection is significantly enhanced. Furthermore, the connector 10 can be connected to both a zipper and a hinge 60, enhancing the housing's compatibility with different connectors 10.

[0092] Figure 11This invention discloses a suitcase including the aforementioned case connection structure. The case body consists of two shell panels. The aforementioned case connection structure connects the hinge 60 to the two shell panels. In some embodiments, the aforementioned case connection structure can also connect the outer zipper 50 to the two shell panels.

[0093] In summary, multiple embodiments of the present invention have been described in detail with reference to the accompanying drawings. Furthermore, the definitions of the elements described above are not limited to the specific structures, shapes, or methods mentioned in the embodiments; the present invention also incorporates more detailed designs based on the above description, for example:

[0094] (1) As Figures 3A-4B As shown, the bottom surface of the coupling member 30 away from the second snap-fit ​​portion 31 is a horizontal or inclined surface.

[0095] (2) Figures 3A-4B As shown, the coupling member 30 has a boss (or back teeth) 222 at the end away from the connector 10, and the second sidewall 22 has a recess at the end away from the connector 10 that mates with the boss (or back teeth) 222.

[0096] (3) Figure 12 As shown, the end of the connector 10 away from the coupling member 30 extends toward the first sidewall 21 to form an inner groove 12, which is used to install the inner zipper assembly 70.

[0097] (3) Figure 13 As shown, the locking range of the H-shaped enclosure 20 is designed as follows: the side of the first sidewall 21 closest to the second sidewall 22 is the outer side, and the side of the second sidewall 22 furthest from the first sidewall 21 is the outer side. The second sidewall 22 is shorter than the first sidewall 21. The distance A1 between the innermost side of the first sidewall 21 and the outermost side of the second sidewall 22 is 2.0-40mm; the distance A2 between the outermost sidewalls of the first sidewall 21 and the outermost side of the second sidewall 22 is 1.5-35mm; the distance H1 between the top of the first sidewall 21 and the bottom of the second sidewall 22 is 8.0-80mm; the distance H2 between the top of the second sidewall 22 and the top of the first crossbeam 23 is 1.0-77mm; the distance H3 between the bottom of the first crossbeam 23 and the bottom of the second sidewall 22 is 1.0-77mm; and the distance H4 between the top and bottom of the second sidewall 22 is 3.0-80mm.

[0098] like Figure 14As shown, the locking range of the Z-shaped enclosure 20 is designed as follows: the side of the first sidewall 21 of the enclosure 20 closest to the second sidewall 22 is the outer side, and the side of the second sidewall 22 furthest from the first sidewall 21 is the outer side. The distance A3 between the innermost side of the first sidewall 21 and the outermost side of the second sidewall 22 is 1.5-80mm; the distance A4 between the outermost side of the first sidewall 21 and the outermost side of the second sidewall 22 is 1.0-75mm; and the distance H5 between the top of the second sidewall 22 and the bottom of the first crossbeam 23 is 1.0-80mm.

[0099] like Figure 15 As shown, the locking range of the L-shaped housing 20 is designed as follows: the side of the first sidewall 21 of the housing 20 closest to the first crossbeam 23 is the outer side, and the side of the first crossbeam 23 furthest from the first sidewall 21 is also the outer side. The distance A5 between the innermost side of the first sidewall 21 and the outermost side of the first crossbeam 23 is 3.0-60mm; the distance A6 between the outermost sidewall 21 and the outermost side of the first crossbeam 23 is 1.0-58mm.

[0100] In summary, this utility model provides a box connection structure that is simple and efficient to assemble, can overcome technical limitations, realize automated production, maximize economic benefits, and has strong practical value and good prospects for promotion and application.

[0101] It should also be noted that the directional terms mentioned in the embodiments, such as "up," "down," "front," "back," "left," and "right," are only for reference to the directions in the accompanying drawings and are not intended to limit the scope of protection of this utility model. Furthermore, the shapes and sizes of the components in the figures do not reflect their actual size and proportions, but are only schematic representations of the embodiments of this utility model.

[0102] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can be fixed connections, detachable connections, or integral connections; they can be direct connections or indirect connections through an intermediate medium; and they can be internal connections between two components.

[0103] The specific embodiments described above provide a detailed explanation of the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A box-type connection structure, comprising a connector, a box shell, and a coupling component, characterized in that, One end of the connector is provided with a first snap-fit ​​part, and the other end of the connector is connected to an external zipper or hinge for connecting the box shell to another box shell to form a complete box body; the box shell is provided with an assembly through hole; the coupling member is provided with a second snap-fit ​​part, and the first snap-fit ​​part passes through the assembly through hole and snaps with the second snap-fit ​​part located on the other side of the assembly through hole.

2. The box connection structure according to claim 1, characterized in that, The housing includes a first side wall, a second side wall, and a first crossbeam, and the assembly through hole is formed on the first crossbeam.

3. The box connection structure according to claim 2, characterized in that, The first snap-fit ​​portion has a protrusion, and the second snap-fit ​​portion has a groove, or the first snap-fit ​​portion has a groove and the second snap-fit ​​portion has a protrusion, and the protrusion is inserted into the groove to achieve snap-fit ​​between the first snap-fit ​​portion and the second snap-fit ​​portion.

4. The box connection structure according to claim 3, characterized in that, The protrusion is a trapezoidal protrusion, a T-shaped protrusion, or a circular protrusion, and the groove is a trapezoidal groove, a T-shaped groove, or a circular groove that mates with the protrusion.

5. The box connection structure according to any one of claims 2-4, characterized in that, A locking hole is provided on the side of the first locking part, and a locking hook is provided on the inner wall of the second side wall or the first side wall. After the first locking part passes through the assembly through hole, the locking hook engages with the locking hole.

6. The box connection structure according to claim 2, characterized in that, The first and second snap-fit ​​parts are provided with corresponding pin holes, and the housing connection structure also includes a pin. After the first and second snap-fit ​​parts are snapped together, the pin passes through the pin hole.

7. The box connection structure according to claim 5, characterized in that, The housing also includes a second crossbeam, which is offset from the first crossbeam and has an assembly through hole. When the first snap-fit ​​part and the second snap-fit ​​part pass through the corresponding assembly through hole, the ends of the first snap-fit ​​part and the second snap-fit ​​part abut against the upper surface of the second crossbeam and the lower surface of the first crossbeam, respectively.

8. The box connection structure according to claim 5, characterized in that, The other end of the connector is connected to an external zipper. The cross-section of the box shell is H-shaped, Z-shaped, or L-shaped, and the outer side of the second side wall is the outer surface of the box shell.

9. The box connection structure according to claim 1, characterized in that, The other end of the connector is connected to a hinge. The connector has a protrusion or a top groove at the end away from the coupling member, and a waterproof strip is provided at the protrusion or top groove.

10. The box connection structure according to any one of claims 2-4 and 6, characterized in that, The coupling member has a boss or a tooth at the end away from the connector, and the second sidewall has a recess at the end away from the connector that mates with the boss or tooth.

11. The box connection structure according to any one of claims 2-4 and 6, characterized in that, The connector extends toward the first sidewall at the end away from the coupling to form an inner groove for installing an inner zipper.

12. A suitcase, characterized in that: The suitcase includes the suitcase connection structure as described in any one of claims 1-11.

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