A soft and hard rubber co-extruded luggage strip and internal reinforcement structure

Abstract

The utility model discloses a kind of soft and hard rubber co-extrusion's travel case rubber strip and internal reinforcing structure, including first case shell, second case shell, first rubber strip, second rubber strip, first zipper, second zipper, first internal reinforcing structure, second internal reinforcing structure, first lining zipper, second lining zipper, first sewing fixing structure, second sewing fixing structure.The utility model forms a kind of novel rubber strip by the way of soft and hard rubber combination co-extrusion, surface layer and middle layer are soft rubber material, inner layer is located in the internal area of travel case case shell and is hard rubber material, and by the novel rubber strip corresponding travel case case shell mouth four corner parts equivalent length is carried out longitudinal thickness cutting, to reduce the longitudinal thickness of rubber strip hard rubber part, subsequent cold bending is facilitated, ensure that the novel rubber strip cold bending can also effectively form in the frame shape same as travel case case shell mouth shape, and then be fixed to corresponding travel case case shell mouth by sewing process.

Description

Technical Field

[0001] This utility model relates to the field of suitcases, and in particular to a suitcase adhesive strip made of co-extruded soft and hard rubber and its internal reinforcing structure. Background Technology

[0002] A rolling suitcase is a type of luggage with a pull handle and wheels. It's a box people carry when traveling to store their belongings. Suitcases are typically used to store clothing, personal care items, and souvenirs needed for a trip. A rolling suitcase mainly consists of two shells that are connected by an opening to form a closed space for storing luggage and other items. The most common connection structures are zippers and aluminum frames.

[0003] Zipper: The zipper structure consists of two interlocking zipper teeth on both sides, allowing for both open and closed states. By fixing the zipper fabric on both sides of the zipper to the front and back shells of the suitcase, a front and back pull-along suitcase shell with zippers is formed, allowing the suitcase to be opened and closed freely via the zipper.

[0004] Aluminum frame: The aluminum frame is usually made of aluminum profile and consists of upper and lower frames that interlock with each other. It is bent to form a shape that fits the opening of the suitcase and is fixed to the front and rear shells of the suitcase with rivets. It is also equipped with hinges and locks to realize the functions of opening, closing and locking.

[0005] Users typically make their choice based on the convenience of the zipper and the support strength of the aluminum frame. Common suitcase zipper structures usually use soft leather strips and zippers sewn together to form a suitcase that can be opened and closed by a zipper. However, the leather strips are relatively soft and cannot provide effective support strength for the suitcase. On the other hand, the aluminum frame can provide effective support strength, but it is more expensive and has extremely low production efficiency.

[0006] Later, a new type of rigid plastic frame appeared on the market. This rigid plastic frame is made using a one-piece rigid plastic extrusion process. It is formed by steam bending to create a frame that matches the shape of the suitcase's opening. Then, adhesive is applied to the grooves on the frame facing the suitcase opening using a dispensing device. The suitcase opening is then inserted into these grooves before the adhesive cures, and a pressure-holding device is used to stabilize and cure the frame, ensuring that the suitcase and frame do not detach during adhesive curing. This method has significant drawbacks. For example, it requires a set of profile extrusion equipment, a set of frame bending equipment for steam bending the rigid plastic profile, a dispensing machine for applying adhesive to the frame, and a pressure-holding device to maintain pressure on the suitcase and frame to ensure they do not detach during adhesive curing. Most critically, the adhesive, as a core connecting consumable, is expensive, and the bonding area and strength of the adhesive cannot be verified after production; the effectiveness of the bond cannot be visually assessed. Utility Model Content

[0007] To overcome the shortcomings of the prior art, this utility model provides a suitcase rubber strip co-extruded with soft and hard rubber and an internal reinforcing structure, which solves the problems that the leather strip is relatively soft and cannot provide effective support strength for the suitcase in the prior art; while the aluminum frame can provide effective support strength, but it is costly and has extremely low production efficiency.

[0008] To achieve the aforementioned objectives of this utility model, the technical solution adopted to solve its technical problems is as follows: A suitcase adhesive strip co-extruded with soft and hard rubber and an internal reinforcement structure, comprising a first suitcase shell, a second suitcase shell, a first adhesive strip, a second adhesive strip, a first zipper, a second zipper, a first internal reinforcement structure, a second internal reinforcement structure, a first inner lining zipper, a second inner lining zipper, a first stitching fixing structure, and a second stitching fixing structure, wherein: The first adhesive strip is S-shaped and includes, from top to bottom, a first adhesive strip surface layer, a first adhesive strip middle layer, and a first adhesive strip inner layer; The first zipper is located between the surface layer and the middle layer of the first adhesive strip and is open to the right in the first zipper mounting part. The opening of the first housing shell is located between the middle layer and the inner layer of the first adhesive strip and is open to the left in the first housing shell mounting part; The first inner lining zipper is fitted inside the inner layer of the first adhesive strip; The first sewing fixing structure fixes the first zipper, the middle layer of the first adhesive strip, the opening of the first box shell, and the inner layer of the first adhesive strip together; The first internal reinforcement structure is a strip structure cut from a hard rubber extrusion profile, distributed at the four straight edges of the opening of the first box shell, and fixed to the inner side of the inner layer of the first rubber strip by a snap-fit ​​structure. The second adhesive strip is S-shaped and includes, from top to bottom, a second adhesive strip surface layer, a second adhesive strip middle layer, and a second adhesive strip inner layer; The second zipper is located between the surface layer of the second adhesive strip and the middle layer of the second adhesive strip, and is located within the second zipper mounting portion that opens to the left. The opening of the second housing is located between the middle layer of the second adhesive strip and the inner layer of the second adhesive strip, and is located in the mounting part of the second housing that opens to the right; The second inner lining zipper is fitted inside the second adhesive strip; The second sewing fixing structure fixes the second zipper, the middle layer of the second adhesive strip, the opening of the second box shell, and the inner layer of the second adhesive strip together; The second internal reinforcement structure is a strip structure cut from a hard rubber extrusion profile, distributed at the four straight edges of the second housing opening, and fastened to the inner side of the second rubber strip by a snap-fit ​​structure; The first and second zippers pull together to form a closed internal space inside the box.

[0009] Furthermore, the first rubber strip surface layer and the first rubber strip middle layer are both made of soft rubber material, and the first rubber strip inner layer is made of hard rubber material. The first rubber strip surface layer, the first rubber strip middle layer, and the first rubber strip inner layer are integrally co-extruded profiles; and / or, the second rubber strip surface layer and the second rubber strip middle layer are both made of soft rubber material, and the second rubber strip inner layer is made of hard rubber material. The second rubber strip surface layer, the second rubber strip middle layer, and the second rubber strip inner layer are integrally co-extruded profiles.

[0010] Furthermore, the inner layer of the first adhesive strip includes a transverse portion, a left vertical reinforcing rib, a left transverse reinforcing rib, a left snap-fit ​​block, a right snap-fit ​​block, a right vertical reinforcing rib, and a snap-fit ​​portion, wherein: The vertical reinforcing rib on the left side of the inner layer of the first adhesive strip is vertically arranged below the left end of the horizontal part of the inner layer of the first adhesive strip; The horizontal reinforcing rib on the left side of the inner layer of the first adhesive strip is horizontally positioned to the right of the vertical reinforcing rib on the left side of the inner layer of the first adhesive strip; The vertical reinforcing rib on the right side of the inner layer of the first adhesive strip is vertically arranged below the right end of the horizontal part of the inner layer of the first adhesive strip; The left snap-fit ​​block of the inner layer of the first adhesive strip is vertically disposed below the horizontal part of the inner layer of the first adhesive strip and close to the vertical reinforcing rib on the right side of the inner layer of the first adhesive strip; The right snap-fit ​​block of the inner layer of the first adhesive strip is located at the lower end of the vertical reinforcing rib on the right side of the inner layer of the first adhesive strip; The first inner layer left snap-fit ​​block, the first inner layer horizontal portion, the first inner layer right vertical reinforcing rib, and the first inner layer right snap-fit ​​block together form a first inner layer snap-fit ​​portion with an opening facing downwards, and the first inner lining zipper is sleeved inside the first inner layer snap-fit ​​portion.

[0011] Furthermore, the first internal reinforcement structure includes a first internal reinforcement structure lateral portion, a first internal reinforcement structure left side latch, a first internal reinforcement structure right side latch, a first left side extension of the first internal reinforcement structure, a latch at the end of the first left side extension of the first internal reinforcement structure, and a second left side extension of the first internal reinforcement structure, wherein: The left side buckle of the first internal reinforcement structure is vertically disposed above the left end of the horizontal part of the first internal reinforcement structure, and is used to engage with the left side buckle of the first internal reinforcement structure and the left side horizontal reinforcing rib of the first adhesive strip when the first internal reinforcement structure is engaged with the inner layer of the first adhesive strip. The right-side buckle of the first internal reinforcement structure is vertically disposed above the right end of the horizontal part of the first internal reinforcement structure, and is used to engage with the left side of the left-side snap-fit ​​block of the first internal reinforcement structure and the first inner layer of the adhesive strip when the first internal reinforcement structure is snapped with the first inner layer of the adhesive strip. The first extension on the left side of the first internal reinforcement structure is U-shaped, with its right end connected to the left end of the horizontal part of the first internal reinforcement structure. The top of its left end is provided with a buckle for the end of the first extension on the left side of the first internal reinforcement structure, which is used to engage the lower end of the vertical reinforcing rib on the left side of the first adhesive strip inner layer with the lowest point of the U-shaped structure of the first extension on the left side of the first internal reinforcement structure when the first internal reinforcement structure is engaged with the inner layer of the first adhesive strip. The buckle for the end of the first extension on the left side of the first internal reinforcement structure is engaged with the left end of the horizontal part of the first adhesive strip inner layer. The second extension on the left side of the first internal reinforcement structure is n-shaped, and its right end is connected to the surface layer of the left end of the first extension on the left side of the first internal reinforcement structure.

[0012] Preferably, the first internal reinforcement structure further includes a middle layer vertical reinforcing rib, which is vertically disposed between the left side buckle and the right side buckle of the first internal reinforcement structure. The vertical height of the vertical reinforcing rib in the middle layer of the first internal reinforcement structure is less than or equal to the distance between the horizontal part of the first internal reinforcement structure and the horizontal part of the first adhesive strip when the first internal reinforcement structure is snapped into the inner layer of the first adhesive strip.

[0013] Furthermore, the opening of the first box shell is divided into the following sections in the circumferential direction: a straight edge step at the top of the opening of the first box shell, a first corner step at the top of the opening of the first box shell, a straight edge step on the left side of the opening of the first box shell, a first corner step at the bottom of the opening of the first box shell, a straight edge step at the bottom of the opening of the first box shell, a second corner step at the bottom of the opening of the first box shell, a straight edge step on the right side of the opening of the first box shell, and a second corner step at the top of the opening of the first box shell. The first adhesive strip is divided into the following areas in the circumferential direction at the opening of the first housing: the top straight edge step assembly area, the top first corner step assembly area, the left straight edge step assembly area, the bottom first corner step assembly area, the bottom straight edge step assembly area, the bottom second corner step assembly area, the right straight edge step assembly area, and the top second corner step assembly area. The first internal reinforcement structure is respectively fixed inside the top straight edge step assembly area of ​​the first adhesive strip, the left straight edge step assembly area of ​​the first adhesive strip, the bottom straight edge step assembly area of ​​the first adhesive strip, and the right straight edge step assembly area of ​​the first adhesive strip. When the first adhesive strip is bent into a frame, the ends of the left vertical reinforcing ribs of the inner layer of the first adhesive strip are cut at the first corner step assembly area at the bottom of the first adhesive strip, the first corner step assembly area at the top of the first adhesive strip, the second corner step assembly area at the top of the first adhesive strip, and the second corner step assembly area at the bottom of the first adhesive strip to facilitate bending at the corners of the frame; the ends of the left vertical reinforcing ribs of the inner layer of the first adhesive strip are kept in their original cross-sectional shape at the straight edge step assembly area at the bottom of the first adhesive strip, the straight edge step assembly area at the left side of the first adhesive strip, the straight edge step assembly area at the top of the first adhesive strip, and the straight edge step assembly area at the right side of the first adhesive strip to maintain the structural strength of the first adhesive strip; The cutting width at the first corner step assembly area at the bottom of the first adhesive strip, the first corner step assembly area at the top of the first adhesive strip, the second corner step assembly area at the top of the first adhesive strip, and the second corner step assembly area at the bottom of the first adhesive strip is equal to the arc length of the radius of the first corner step at the bottom of the first box opening, the first corner step at the top of the first box opening, the second corner step at the top of the first box opening, and the second corner step at the bottom of the first box opening.

[0014] Furthermore, the inner layer of the second adhesive strip includes a transverse portion, a right-side vertical reinforcing rib, a right-side transverse reinforcing rib, a right-side snap-fit ​​block, a left-side snap-fit ​​block, a left-side vertical reinforcing rib, and a snap-fit ​​portion, wherein: The vertical reinforcing rib on the right side of the inner layer of the second adhesive strip is vertically positioned below the right end of the horizontal portion of the inner layer of the second adhesive strip; The horizontal reinforcing rib on the right side of the inner layer of the second adhesive strip is horizontally positioned to the left of the vertical reinforcing rib on the right side of the inner layer of the second adhesive strip; The vertical reinforcing rib on the left side of the inner layer of the second adhesive strip is vertically positioned below the left end of the horizontal portion of the inner layer of the second adhesive strip; The right snap-fit ​​block of the inner layer of the second adhesive strip is vertically disposed below the horizontal part of the inner layer of the second adhesive strip and close to the left vertical reinforcing rib of the inner layer of the second adhesive strip; The left snap-fit ​​block of the inner layer of the second adhesive strip is located at the lower end of the vertical reinforcing rib on the left side of the inner layer of the second adhesive strip; The second inner layer right snap block, the second inner layer horizontal part, the second inner layer left vertical reinforcing rib and the second inner layer left snap block together form a second inner layer snap part with an opening facing downwards, and the second inner lining zipper is sleeved inside the second inner layer snap part.

[0015] Furthermore, the second internal reinforcement structure includes a second internal reinforcement structure lateral portion, a second internal reinforcement structure right side latch, a second internal reinforcement structure left side latch, a second internal reinforcement structure right side first extension, a second internal reinforcement structure right side first extension end latch, and a second internal reinforcement structure right side second extension, wherein: The right-side buckle of the second internal reinforcement structure is vertically disposed above the right end of the transverse portion of the second internal reinforcement structure, and is used to engage with the right-side buckle of the second internal reinforcement structure and the right-side transverse reinforcing rib of the second adhesive strip when the second internal reinforcement structure is engaged with the inner layer of the second adhesive strip. The left side buckle of the second internal reinforcement structure is vertically disposed above the left end of the horizontal part of the second internal reinforcement structure, and is used to engage with each other when the second internal reinforcement structure is engaged with the inner layer of the second adhesive strip; The right side first extension of the second internal reinforcement structure is U-shaped. Its left end is connected to the right end of the horizontal part of the second internal reinforcement structure. The top of its right end is provided with a buckle for the end of the right side first extension of the second internal reinforcement structure. When the second internal reinforcement structure is engaged with the inner layer of the second adhesive strip, the lower end of the right vertical reinforcing rib of the inner layer of the second adhesive strip is engaged with the lowest point of the U-shaped structure of the right side first extension of the second internal reinforcement structure. The buckle for the end of the right side first extension of the second internal reinforcement structure is engaged with the right end of the horizontal part of the inner layer of the second adhesive strip. The second extension on the right side of the second internal reinforcement structure is n-shaped, and its left end is connected to the right end surface layer of the second extension on the right side of the second internal reinforcement structure.

[0016] Preferably, the second internal reinforcement structure further includes a middle layer vertical reinforcing rib, which is vertically disposed between the right side buckle and the left side buckle of the second internal reinforcement structure. The vertical height of the vertical reinforcing rib in the middle layer of the second internal reinforcement structure is less than or equal to the distance between the horizontal part of the second internal reinforcement structure and the horizontal part of the second adhesive strip when the second internal reinforcement structure is engaged with the inner layer of the second adhesive strip.

[0017] Furthermore, the opening of the second box shell is divided into the following sections in the circumferential direction: a straight edge step at the top of the opening of the second box shell, a first corner step at the top of the opening of the second box shell, a straight edge step on the left side of the opening of the second box shell, a first corner step at the bottom of the opening of the second box shell, a straight edge step at the bottom of the opening of the second box shell, a second corner step at the bottom of the opening of the second box shell, a straight edge step on the right side of the opening of the second box shell, and a second corner step at the top of the opening of the second box shell. The second adhesive strip is divided into the following areas in the circumferential direction at the opening of the second housing: the top straight edge step assembly area of ​​the second adhesive strip, the top first corner step assembly area of ​​the second adhesive strip, the left straight edge step assembly area of ​​the second adhesive strip, the bottom first corner step assembly area of ​​the second adhesive strip, the bottom straight edge step assembly area of ​​the second adhesive strip, the bottom second corner step assembly area of ​​the second adhesive strip, the right straight edge step assembly area of ​​the second adhesive strip, and the top second corner step assembly area of ​​the second adhesive strip. The second internal reinforcement structure is respectively fixed inside the top straight edge step assembly area of ​​the second adhesive strip, the left straight edge step assembly area of ​​the second adhesive strip, the bottom straight edge step assembly area of ​​the second adhesive strip, and the right straight edge step assembly area of ​​the second adhesive strip. When the second adhesive strip is bent into a frame, the ends of the right vertical reinforcing ribs of the inner layer of the second adhesive strip are cut at the first corner step assembly area at the bottom of the second adhesive strip, the first corner step assembly area at the top of the second adhesive strip, the second corner step assembly area at the top of the second adhesive strip, and the second corner step assembly area at the bottom of the second adhesive strip to facilitate bending at the corners of the frame; the ends of the right vertical reinforcing ribs of the inner layer of the second adhesive strip are kept in their original cross-sectional shape at the straight edge step assembly area at the bottom of the second adhesive strip, the straight edge step assembly area at the left side of the second adhesive strip, the straight edge step assembly area at the top of the second adhesive strip, and the straight edge step assembly area at the right side of the second adhesive strip to maintain the structural strength of the second adhesive strip; The cutting width at the assembly areas of the bottom first corner step of the second adhesive strip, the top first corner step of the second adhesive strip, the top second corner step of the second adhesive strip, and the bottom second corner step of the second adhesive strip is equal to the arc length of the radius of the first corner step at the bottom of the second box opening, the first corner step at the top of the second box opening, the second corner step at the top of the second box opening, and the second corner step at the bottom of the second box opening.

[0018] Because this utility model adopts the above technical solution, it has the following advantages and positive effects compared with the prior art: This patent application describes a novel adhesive strip formed through a co-extrusion process combining soft and hard rubber. The strip features a soft rubber surface and middle layer, while the inner layer, located within the suitcase shell, is made of hard rubber. By cutting the four corners of the suitcase shell opening at equal lengths, the longitudinal thickness of the hard rubber portion of the strip is reduced, facilitating subsequent cold bending. This ensures that the new adhesive strip, even during cold bending, effectively forms a frame shape identical to the suitcase shell opening. It is then fixed to the corresponding suitcase shell opening via sewing. This method is more efficient and convenient than the steam-heated bending of rigid profile frames, significantly reducing the technical requirements for bending equipment. This allows manufacturers to achieve frame bending without high investment. This method retains the common production method of sewing soft rubber strips while also preserving the convenience and efficiency of zipper sewing. Therefore, the connection strength and effectiveness between this novel adhesive strip and the suitcase shell are easily observed and inspected, ensuring product quality. Meanwhile, the internal hard plastic structure retains longitudinal thickness on the straight edge of the suitcase shell opening, thus improving and ensuring its support strength, while maintaining and achieving the same structural support effect as the new hard plastic profile frame and conventional aluminum frame.

[0019] To further enhance the support strength at the straight edge of the suitcase opening, reinforcing ribs can be added to the inner straight edge area of ​​the adhesive strip via snap-fit ​​connections. This strengthens the support and ensures the opening is less prone to deformation under stress. The production and assembly are more flexible and efficient. Manufacturing plants no longer need to invest in multiple sets of expensive production equipment to achieve the same structural effect. Therefore, lower investment, lower manufacturing costs, higher production efficiency, and better product quality and appearance lead to greater marketability. This patent application is extremely beneficial to the development of the suitcase industry. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings: Figure 1 This is a three-dimensional view of the overall structure of a soft and hard rubber co-extruded suitcase adhesive strip and its internal reinforcing structure according to the present invention. Figure 2 This is a side view of the overall structure of a soft and hard rubber co-extruded suitcase adhesive strip and its internal reinforcing structure according to the present invention. Figure 3 This is a schematic diagram of the structure of the first and second adhesive strips in the soft and hard rubber co-extruded suitcase adhesive strip and internal reinforcement structure of this utility model; Figure 4This is an assembly diagram of the first and second adhesive strips in a soft and hard rubber co-extruded suitcase adhesive strip and internal reinforcement structure of the present invention (excluding the first and second internal reinforcement structures). Figure 5 This is a schematic diagram of the first and second internal reinforcement structures in the co-extruded soft and hard rubber luggage strip and internal reinforcement structure of this utility model. Figure 6 This is an assembly diagram of the first internal reinforcement structure in the soft and hard rubber co-extruded suitcase adhesive strip and internal reinforcement structure of this utility model. Figure 7 This is an assembly diagram of the first and second adhesive strips in a soft and hard rubber co-extruded suitcase adhesive strip and internal reinforcement structure (including the first and second internal reinforcement structures). Figure 8 This is a schematic diagram of the state of the first adhesive strip before assembly in the soft and hard rubber co-extruded suitcase adhesive strip and internal reinforcement structure of this utility model. Figure 9 This is a schematic diagram of the first adhesive strip after bending in a soft and hard rubber co-extruded suitcase adhesive strip and its internal reinforcing structure according to this utility model. Figure 10 This is a schematic diagram of the first box shell opening structure in a soft and hard rubber co-extruded suitcase adhesive strip and internal reinforcement structure of this utility model; Figure 11 This is a schematic diagram of the assembly process of the first adhesive strip and the first box opening in a soft and hard rubber co-extruded suitcase adhesive strip and internal reinforcement structure of the present invention. Figure 12 This is a schematic diagram showing the completed assembly of the first adhesive strip and the first box opening in a soft and hard rubber co-extruded suitcase adhesive strip and internal reinforcement structure of the present invention. Figure 13 This is a schematic diagram of the layout of the first adhesive strip and the first internal reinforcement structure in a soft and hard rubber co-extruded suitcase adhesive strip and internal reinforcement structure of this utility model. Figure 14 This is a schematic diagram of the state of the second adhesive strip in the internal reinforcing structure of a suitcase adhesive strip made of co-extruded soft and hard rubber according to the present invention, before assembly; Figure 15 This is a schematic diagram of the second adhesive strip after bending in a soft and hard rubber co-extruded suitcase adhesive strip and an internal reinforcing structure according to the present invention. Figure 16 This is a schematic diagram of the second box shell opening structure in a soft and hard rubber co-extruded suitcase adhesive strip and internal reinforcement structure of this utility model; Figure 17 This is a schematic diagram of the layout of the second adhesive strip and the second internal reinforcement structure in a soft and hard rubber co-extruded suitcase adhesive strip and internal reinforcement structure of this utility model. Figure 18 This is a schematic diagram of the assembly process of the rubber strip and the opening of the case shell in a soft and hard rubber co-extruded suitcase and an internal reinforcing structure.

[0021] [Explanation of Key Symbols] 1-First box shell; 101-Straight edge step at the top of the opening of the first box shell; 102-First corner step at the top of the opening of the first box shell; 103-Straight edge step on the left side of the opening of the first box shell; 104-First corner step at the bottom of the opening of the first box shell; 105-Straight edge step at the bottom of the opening of the first box shell; 106-Second corner step at the bottom of the opening of the first box shell; 107-Straight edge step on the right side of the opening of the first box shell; 108-Second corner step at the top of the opening of the first box shell; 2-Second shell; 201-Straight edge step at the top of the opening of the second shell; 202-First corner step at the top of the opening of the second shell; 203-Straight edge step on the left side of the opening of the second shell; 204-First corner step at the bottom of the opening of the second shell; 205-Straight edge step at the bottom of the opening of the second shell; 206-Second corner step at the bottom of the opening of the second shell; 207-Straight edge step on the right side of the opening of the second shell; 208-Second corner step at the top of the opening of the second shell; 3-First adhesive strip; 31-First adhesive strip surface layer; 32-First adhesive strip middle layer; 33-First adhesive strip inner layer; 331-First adhesive strip inner layer transverse portion; 332-First adhesive strip inner layer left vertical reinforcing rib; 333-First adhesive strip inner layer left transverse reinforcing rib; 334-First adhesive strip inner layer left snap-fit ​​block; 335-First adhesive strip inner layer right snap-fit ​​block; 336-First adhesive strip inner layer right vertical reinforcing rib; 337-First adhesive strip inner layer snap-fit ​​portion; 3 01- Assembly area of ​​the straight edge step at the top of the first adhesive strip; 302- Assembly area of ​​the first corner step at the top of the first adhesive strip; 303- Assembly area of ​​the straight edge step on the left side of the first adhesive strip; 304- Assembly area of ​​the first corner step at the bottom of the first adhesive strip; 305- Assembly area of ​​the straight edge step at the bottom of the first adhesive strip; 306- Assembly area of ​​the second corner step at the bottom of the first adhesive strip; 307- Assembly area of ​​the straight edge step on the right side of the first adhesive strip; 308- Assembly area of ​​the second corner step at the top of the first adhesive strip; 4-Second adhesive strip; 41-Second adhesive strip surface layer; 42-Second adhesive strip middle layer; 43-Second adhesive strip inner layer; 431-Second adhesive strip inner layer transverse portion; 432-Second adhesive strip inner layer right side vertical reinforcing rib; 433-Second adhesive strip inner layer right side transverse reinforcing rib; 434-Second adhesive strip inner layer right snap-fit ​​block; 435-Second adhesive strip inner layer left snap-fit ​​block; 436-Second adhesive strip inner layer left side vertical reinforcing rib; 437-Second adhesive strip inner layer snap-fit ​​portion; 4 01- Assembly area of ​​the straight edge step at the top of the second rubber strip; 402- Assembly area of ​​the first corner step at the top of the second rubber strip; 403- Assembly area of ​​the straight edge step on the left side of the second rubber strip; 404- Assembly area of ​​the first corner step at the bottom of the second rubber strip; 405- Assembly area of ​​the straight edge step at the bottom of the second rubber strip; 406- Assembly area of ​​the second corner step at the bottom of the second rubber strip; 407- Assembly area of ​​the straight edge step on the right side of the second rubber strip; 408- Assembly area of ​​the second corner step at the top of the second rubber strip; 5-First zipper; 51-First zipper mounting part; 6-Second zipper; 61-Second zipper mounting part; 7-First internal reinforcement structure; 71-Transverse portion of the first internal reinforcement structure; 72-Left side snap fastener of the first internal reinforcement structure; 73-Right side snap fastener of the first internal reinforcement structure; 74-First left extension of the first internal reinforcement structure; 75-End snap fastener of the first left extension of the first internal reinforcement structure; 76-Second left extension of the first internal reinforcement structure; 77-Vertical reinforcing rib in the middle layer of the first internal reinforcement structure; 8-Second internal reinforcement structure; 81-Second internal reinforcement structure transverse portion; 82-Second internal reinforcement structure right side buckle; 83-Second internal reinforcement structure left side buckle; 84-Second internal reinforcement structure right side first extension; 85-Second internal reinforcement structure right side first extension end buckle; 86-Second internal reinforcement structure right side second extension; 87-Second internal reinforcement structure middle layer vertical stiffener; 9-First inner lining zipper; 10 - Second inner lining zipper; 11-First seam fixing structure; 12-Second seam fixing structure; 13-First housing mounting section; 14-Second housing mounting section. Detailed Implementation

[0022] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and 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 of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] like Figure 1-18 As shown, this embodiment discloses a soft and hard rubber co-extruded suitcase adhesive strip and internal reinforcement structure, including a first suitcase shell 1, a second suitcase shell 2, a first adhesive strip 3, a second adhesive strip 4, a first zipper 5, a second zipper 6, a first internal reinforcement structure 7, a second internal reinforcement structure 8, a first inner lining zipper 9, a second inner lining zipper 10, a first sewing fixing structure 11, and a second sewing fixing structure 12, wherein: The first adhesive strip 3 is S-shaped and includes, from top to bottom, a first adhesive strip surface layer 31, a first adhesive strip middle layer 32, and a first adhesive strip inner layer 33; The first zipper 5 is located between the surface layer 31 and the middle layer 32 of the first adhesive strip and is open to the right in the first zipper mounting part 51. The opening of the first housing 1 is located between the middle layer 32 and the inner layer 33 of the first adhesive strip and is open to the left in the first housing mounting part 13; The first inner lining zipper 9 is fitted inside the inner layer 33 of the first adhesive strip; The first sewing fixing structure 11 fixes the first zipper 5, the middle layer of the first adhesive strip 32, the opening of the first box shell 1, and the inner layer of the first adhesive strip 33 together; The first internal reinforcement structure 7 is a strip structure cut from a hard rubber extrusion profile, distributed at the four straight edges of the opening of the first housing 1, and is fastened to the inner side of the inner layer 33 of the first rubber strip by a snap-fit ​​structure. The second adhesive strip 4 is S-shaped and includes, from top to bottom, a second adhesive strip surface layer 41, a second adhesive strip middle layer 42, and a second adhesive strip inner layer 43; The second zipper 6 is located between the surface layer 41 of the second adhesive strip and the middle layer 42 of the second adhesive strip, and is open to the left in the second zipper mounting part 61; The opening of the second housing 2 is located between the middle layer 42 of the second adhesive strip and the inner layer 43 of the second adhesive strip, and is located inside the second housing mounting part 14 that opens to the right; The second inner lining zipper 10 is fitted inside the inner layer 43 of the second adhesive strip; The second sewing fixing structure 12 fixes the second zipper 6, the second adhesive strip middle layer 42, the opening of the second box shell 2, and the second adhesive strip inner layer 43 together; The second internal reinforcement structure 8 is a strip structure cut from a hard rubber extrusion profile, distributed at the four straight edges of the opening of the second housing 2, and is fastened to the inner side of the inner layer 43 of the second rubber strip by a snap-fit ​​structure; The first zipper 5 and the second zipper 6 are pulled together to form a closed internal space inside the box.

[0026] In this embodiment, the first adhesive strip surface layer 31 and the first adhesive strip middle layer 32 are both made of soft rubber, and the first adhesive strip inner layer 33 is made of hard rubber. The first adhesive strip surface layer 31, the first adhesive strip middle layer 32, and the first adhesive strip inner layer 33 are integrally co-extruded profiles; and / or, the second adhesive strip surface layer 41 and the second adhesive strip middle layer 42 are both made of soft rubber, and the second adhesive strip inner layer 43 is made of hard rubber. The second adhesive strip surface layer 41, the second adhesive strip middle layer 42, and the second adhesive strip inner layer 43 are integrally co-extruded profiles. Preferably, the soft rubber material is PVC, TPE, TPU, or rubber-based soft rubber material, and the hard rubber material is UPVC, ABS, PC, or ABS+PC alloy-based hard rubber material.

[0027] refer to Figure 3 , 4 6 and 7, the first inner layer 33 of the adhesive strip includes a horizontal portion 331, a left vertical reinforcing rib 332, a left horizontal reinforcing rib 333, a left snap-fit ​​block 334, a right snap-fit ​​block 335, a right vertical reinforcing rib 336, and a snap-fit ​​portion 337, wherein: The vertical reinforcing rib 332 on the left side of the inner layer of the first adhesive strip is vertically disposed below the left end of the horizontal portion 331 of the inner layer of the first adhesive strip; The horizontal reinforcing rib 333 on the left side of the inner layer of the first adhesive strip is horizontally positioned to the right of the vertical reinforcing rib 332 on the left side of the inner layer of the first adhesive strip; The vertical reinforcing rib 336 on the right side of the inner layer of the first adhesive strip is vertically disposed below the right end of the horizontal portion 331 of the inner layer of the first adhesive strip; The left snap-fit ​​block 334 of the inner layer of the first adhesive strip is vertically disposed below the horizontal portion 331 of the inner layer of the first adhesive strip and close to the vertical reinforcing rib 336 on the right side of the inner layer of the first adhesive strip. The right snap-fit ​​block 335 of the inner layer of the first adhesive strip is located at the lower end of the vertical reinforcing rib 336 on the right side of the inner layer of the first adhesive strip; The first inner layer left snap-fit ​​block 334, the first inner layer horizontal portion 331, the first inner layer right vertical reinforcing rib 336, and the first inner layer right snap-fit ​​block 335 together form a first inner layer snap-fit ​​portion 337 with an opening facing downwards, and the first inner lining zipper 9 is sleeved inside the first inner layer snap-fit ​​portion 337.

[0028] Further reference Figure 5 The first internal reinforcement structure 7 includes a first internal reinforcement structure lateral portion 71, a first internal reinforcement structure left side latch 72, a first internal reinforcement structure right side latch 73, a first internal reinforcement structure left side first extension portion 74, a first internal reinforcement structure left side first extension portion end latch 75, and a first internal reinforcement structure left side second extension portion 76, wherein: The left side buckle 72 of the first internal reinforcement structure is vertically disposed above the left end of the horizontal part 71 of the first internal reinforcement structure, and is used to engage with the left side buckle 72 of the first internal reinforcement structure and the left side horizontal reinforcing rib 333 of the first adhesive strip when the first internal reinforcement structure 7 is engaged with the inner layer 33 of the first adhesive strip. The right-side buckle 73 of the first internal reinforcement structure is vertically disposed above the right end of the horizontal part 71 of the first internal reinforcement structure, and is used to engage with the left side of the left-side buckle 73 of the first internal reinforcement structure and the left-side snap-fit ​​block 334 of the first adhesive strip when the first internal reinforcement structure 7 is snapped with the inner layer 33 of the first adhesive strip. The first extension 74 on the left side of the first internal reinforcement structure is U-shaped. Its right end is connected to the left end of the horizontal part 71 of the first internal reinforcement structure. The top of its left end is provided with a buckle 75 for the end of the first extension 74 on the left side of the first internal reinforcement structure. When the first internal reinforcement structure 7 is engaged with the inner layer 33 of the first adhesive strip, the lower end of the vertical reinforcing rib 332 on the left side of the inner layer of the first adhesive strip is engaged at the lowest point of the U-shaped structure of the first extension 74 on the left side of the first internal reinforcement structure. The buckle 75 for the end of the first extension 74 on the left side of the first internal reinforcement structure is engaged with the left end of the horizontal part 331 of the inner layer of the first adhesive strip. The second extension 76 on the left side of the first internal reinforcement structure is n-shaped, and its right end is connected to the left end surface of the first extension 74 on the left side of the first internal reinforcement structure for connection with other accessories, such as handle case shell handle inner reinforcement.

[0029] Preferably, the first internal reinforcement structure 7 further includes a middle layer vertical reinforcing rib 77, which is vertically disposed between the left side buckle 72 and the right side buckle 73 of the first internal reinforcement structure. In this embodiment, the vertical height of the vertical reinforcing rib 77 in the middle layer of the first internal reinforcing structure is less than or equal to the distance between the horizontal portion 71 of the first internal reinforcing structure and the horizontal portion 331 of the first adhesive strip when the first internal reinforcing structure 7 is engaged with the inner layer 33 of the first adhesive strip. Figure 6 and 7 Preferably, the vertical height of the vertical reinforcing rib 77 in the middle layer of the first internal reinforcing structure is equal to the distance between the horizontal portion 71 of the first internal reinforcing structure and the horizontal portion 331 of the first adhesive strip when the first internal reinforcing structure 7 is engaged with the inner layer 33 of the first adhesive strip. This can greatly increase the supporting force of the vertical reinforcing rib 77 in the middle layer of the first internal reinforcing structure on the horizontal portion 331 of the inner layer of the first adhesive strip.

[0030] Furthermore, the opening of the first housing 1 is sequentially divided in the circumferential direction into the following steps: a straight edge step 101 at the top of the opening; a first corner step 102 at the top of the opening; a straight edge step 103 on the left side of the opening; a first corner step 104 at the bottom of the opening; a straight edge step 105 at the bottom of the opening; a second corner step 106 at the bottom of the opening; a straight edge step 107 on the right side of the opening; and a second corner step 108 at the top of the opening. Figure 10 ; The first adhesive strip 3 is sequentially divided into the following areas in the circumferential direction at the opening of the first housing 1: a top straight edge step assembly area 301, a top first corner step assembly area 302, a left side straight edge step assembly area 303, a bottom first corner step assembly area 304, a bottom straight edge step assembly area 305, a bottom second corner step assembly area 306, a right side straight edge step assembly area 307, and a top second corner step assembly area 308. Figure 8 and 9 ; The first internal reinforcement structure 7 is respectively fixed inside the top straight edge step assembly area 301 of the first adhesive strip, the left straight edge step assembly area 303 of the first adhesive strip, the bottom straight edge step assembly area 305 of the first adhesive strip, and the right straight edge step assembly area 307 of the first adhesive strip, as shown below. Figure 13 ; When the first adhesive strip 3 is bent into a frame, the ends of the left vertical reinforcing rib 332 of the inner layer of the first adhesive strip are cut at the first corner step assembly area 304 at the bottom of the first adhesive strip, the first corner step assembly area 302 at the top of the first adhesive strip, the second corner step assembly area 308 at the top of the first adhesive strip, and the second corner step assembly area 306 at the bottom of the first adhesive strip to facilitate bending at the corners of the frame; the ends of the left vertical reinforcing rib 332 of the inner layer of the first adhesive strip are kept in their original cross-sectional shape at the straight edge step assembly area 305 at the bottom of the first adhesive strip, the straight edge step assembly area 303 on the left side of the first adhesive strip, the straight edge step assembly area 301 at the top of the first adhesive strip, and the straight edge step assembly area 307 on the right side of the first adhesive strip to maintain the structural strength of the first adhesive strip 3; In this embodiment, the cutting widths at the first corner step assembly area 304 at the bottom of the first adhesive strip, the first corner step assembly area 302 at the top of the first adhesive strip, the second corner step assembly area 308 at the top of the first adhesive strip, and the second corner step assembly area 306 at the bottom of the first adhesive strip are equal to the arc length of the radius of the first corner step 104 at the bottom of the first box opening, the first corner step 102 at the top of the first box opening, the second corner step 108 at the top of the first box opening, and the second corner step 106 at the bottom of the first box opening. Figure 8 , 9 11 and 12.

[0031] Preferably, the first internal reinforcement structure 71, the first internal reinforcement structure left side buckle 72, the first internal reinforcement structure right side buckle 73, the first internal reinforcement structure left side first extension 74, the first internal reinforcement structure left side first extension end buckle 75, the first internal reinforcement structure left side second extension 76, and the first internal reinforcement structure middle layer vertical reinforcing rib 77 are integrally formed, which can effectively enhance the structural hardness and service life of the first internal reinforcement structure 7.

[0032] refer to Figure 3 , 4 And 7, the second adhesive strip inner layer 43 includes a second adhesive strip inner layer transverse portion 431, a second adhesive strip inner layer right side vertical reinforcing rib 432, a second adhesive strip inner layer right side transverse reinforcing rib 433, a second adhesive strip inner layer right snap-fit ​​block 434, a second adhesive strip inner layer left snap-fit ​​block 435, a second adhesive strip inner layer left side vertical reinforcing rib 436, and a second adhesive strip inner layer snap-fit ​​portion 437, wherein: The vertical reinforcing rib 432 on the right side of the inner layer of the second adhesive strip is vertically disposed below the right end of the horizontal portion 431 of the inner layer of the second adhesive strip; The right-side transverse reinforcing rib 433 of the inner layer of the second adhesive strip is horizontally positioned to the left of the right-side vertical reinforcing rib 432 of the inner layer of the second adhesive strip; The vertical reinforcing rib 436 on the left side of the inner layer of the second adhesive strip is vertically disposed below the left end of the horizontal portion 431 of the inner layer of the second adhesive strip; The right snap-fit ​​block 434 of the inner layer of the second adhesive strip is vertically disposed below the horizontal portion 431 of the inner layer of the second adhesive strip and close to the left vertical reinforcing rib 436 of the inner layer of the second adhesive strip. The second adhesive strip inner layer left snap-fit ​​block 435 is disposed at the lower end of the left vertical reinforcing rib 436 of the second adhesive strip inner layer; The second inner layer right snap-fit ​​block 434, the second inner layer horizontal portion 431, the second inner layer left vertical reinforcing rib 436, and the second inner layer left snap-fit ​​block 435 together form a second inner layer snap-fit ​​portion 437 with an opening facing downwards, and the second inner lining zipper 10 is sleeved inside the second inner layer snap-fit ​​portion 437.

[0033] Further reference Figure 5 The second internal reinforcement structure 8 includes a second internal reinforcement structure transverse portion 81, a second internal reinforcement structure right side latch 82, a second internal reinforcement structure left side latch 83, a second internal reinforcement structure right side first extension portion 84, a second internal reinforcement structure right side first extension portion end latch 85, and a second internal reinforcement structure right side second extension portion 86, wherein: The right-side buckle 82 of the second internal reinforcement structure is vertically disposed above the right end of the transverse portion 81 of the second internal reinforcement structure, and is used to engage with the right-side buckle 82 of the second internal reinforcement structure and the right-side transverse reinforcing rib 433 of the second adhesive strip when the second internal reinforcement structure 8 is engaged with the inner layer 43 of the second adhesive strip. The left side buckle 83 of the second internal reinforcement structure is vertically disposed above the left end of the horizontal part 81 of the second internal reinforcement structure, and is used to engage with each other when the second internal reinforcement structure 8 and the inner layer 43 of the second adhesive strip are engaged. The right side first extension 84 of the second internal reinforcement structure is U-shaped. Its left end is connected to the right end of the horizontal part 81 of the second internal reinforcement structure. The top of its right end is provided with a buckle 85 for the end of the right side first extension of the second internal reinforcement structure. When the second internal reinforcement structure 8 is engaged with the inner layer 43 of the second adhesive strip, the lower end of the right side vertical reinforcing rib 432 of the inner layer 43 of the second adhesive strip is engaged at the lowest point of the U-shaped structure of the right side first extension 84 of the second internal reinforcement structure. The buckle 85 for the end of the right side first extension of the second internal reinforcement structure is engaged with the right end of the horizontal part 431 of the inner layer 43 of the second adhesive strip. The second extension 86 on the right side of the second internal reinforcement structure is n-shaped, and its left end is connected to the right end surface of the second extension 86 on the right side of the second internal reinforcement structure for connection with other accessories, such as handle case shell handle inner reinforcement.

[0034] Preferably, the second internal reinforcement structure 8 further includes a middle layer vertical reinforcing rib 87, which is vertically disposed between the right side buckle 82 and the left side buckle 83 of the second internal reinforcement structure. In this embodiment, the vertical height of the vertical reinforcing rib 87 in the middle layer of the second internal reinforcing structure is less than or equal to the distance between the horizontal portion 81 of the second internal reinforcing structure and the horizontal portion 431 of the second adhesive strip when the second internal reinforcing structure 8 and the inner layer 43 of the second adhesive strip are engaged. Figure 7 Preferably, the vertical height of the vertical reinforcing rib 87 in the middle layer of the second internal reinforcing structure is equal to the distance between the horizontal portion 81 of the second internal reinforcing structure and the horizontal portion 431 of the second adhesive strip when the second internal reinforcing structure 8 is engaged with the inner layer 43 of the second adhesive strip. This can greatly increase the supporting force of the vertical reinforcing rib 77 in the middle layer of the first internal reinforcing structure on the horizontal portion 331 of the inner layer of the first adhesive strip.

[0035] Furthermore, the opening of the second housing 2 is sequentially divided in the circumferential direction into the following steps: a straight edge step 201 at the top of the opening; a first corner step 202 at the top of the opening; a straight edge step 203 on the left side of the opening; a first corner step 204 at the bottom of the opening; a straight edge step 205 at the bottom of the opening; a second corner step 206 at the bottom of the opening; a straight edge step 207 on the right side of the opening; and a second corner step 208 at the top of the opening. Figure 16 ; The second adhesive strip 4 is sequentially divided into the following areas in the circumferential direction at the opening of the second housing 2: a top straight edge step assembly area 401, a top first corner step assembly area 402, a left side straight edge step assembly area 403, a bottom first corner step assembly area 404, a bottom straight edge step assembly area 405, a bottom second corner step assembly area 406, a right side straight edge step assembly area 407, and a top second corner step assembly area 408. Figure 14 and 15 ; The second internal reinforcement structure 8 is respectively fixed inside the top straight edge step assembly area 401, the left straight edge step assembly area 403, the bottom straight edge step assembly area 405, and the right straight edge step assembly area 407 of the second adhesive strip, as shown below. Figure 17 ; When the second adhesive strip 4 is bent into a frame, the ends of the right vertical reinforcing rib 432 of the inner layer of the second adhesive strip are cut at the following locations: bottom first corner step assembly area 404, top first corner step assembly area 402, top second corner step assembly area 408, and bottom second corner step assembly area 406, to facilitate bending at the corners of the frame. The ends of the right vertical reinforcing rib 432 of the inner layer of the second adhesive strip are kept in their original cross-sectional shape at the following locations: bottom straight edge step assembly area 405, left straight edge step assembly area 403, top straight edge step assembly area 401, and right straight edge step assembly area 407, to maintain the structural strength of the second adhesive strip 4. In this embodiment, the cutting widths at the following locations—the bottom first corner step assembly area 404, the top first corner step assembly area 402, the top second corner step assembly area 408, and the bottom second corner step assembly area 406—are equal to the arc length of the rounded corners of the following locations: the bottom first corner step 204, the top first corner step 202, the top second corner step 208, and the bottom second corner step 206 of the second housing opening. Figure 14 , 15 And 18.

[0036] Preferably, the second internal reinforcement structure 81, the second internal reinforcement structure right side buckle 82, the second internal reinforcement structure left side buckle 83, the second internal reinforcement structure right side first extension 84, the second internal reinforcement structure right side first extension end buckle 85, the second internal reinforcement structure right side second extension 86, and the second internal reinforcement structure middle layer vertical reinforcing rib 87 are integrally formed, which can effectively enhance the structural hardness and service life of the second internal reinforcement structure 8.

[0037] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A suitcase adhesive strip made of co-extruded soft and hard rubber and its internal reinforcing structure, characterized in that, Includes a first box shell, a second box shell, a first adhesive strip, a second adhesive strip, a first zipper, a second zipper, a first internal reinforcement structure, a second internal reinforcement structure, a first inner lining zipper, a second inner lining zipper, a first sewing fixing structure, and a second sewing fixing structure, wherein: The first adhesive strip is S-shaped and includes, from top to bottom, a first adhesive strip surface layer, a first adhesive strip middle layer, and a first adhesive strip inner layer; The first zipper is located between the surface layer and the middle layer of the first adhesive strip and is open to the right in the first zipper mounting part. The opening of the first housing shell is located between the middle layer and the inner layer of the first adhesive strip and is open to the left in the first housing shell mounting part; The first inner lining zipper is fitted inside the inner layer of the first adhesive strip; The first sewing fixing structure fixes the first zipper, the middle layer of the first adhesive strip, the opening of the first box shell, and the inner layer of the first adhesive strip together; The first internal reinforcement structure is a strip structure cut from a hard rubber extrusion profile, distributed at the four straight edges of the opening of the first box shell, and fixed to the inner side of the inner layer of the first rubber strip by a snap-fit ​​structure. The second adhesive strip is S-shaped and includes, from top to bottom, a second adhesive strip surface layer, a second adhesive strip middle layer, and a second adhesive strip inner layer; The second zipper is located between the surface layer of the second adhesive strip and the middle layer of the second adhesive strip, and is located within the second zipper mounting portion that opens to the left. The opening of the second housing is located between the middle layer of the second adhesive strip and the inner layer of the second adhesive strip, and is located in the mounting part of the second housing that opens to the right; The second inner lining zipper is fitted inside the second adhesive strip; The second sewing fixing structure fixes the second zipper, the middle layer of the second adhesive strip, the opening of the second box shell, and the inner layer of the second adhesive strip together; The second internal reinforcement structure is a strip structure cut from a hard rubber extrusion profile, distributed at the four straight edges of the second housing opening, and fastened to the inner side of the second rubber strip by a snap-fit ​​structure; The first and second zippers pull together to form a closed internal space inside the box.

2. The suitcase adhesive strip and internal reinforcing structure co-extruded with soft and hard rubber according to claim 1, characterized in that, The first rubber strip's outer and middle layers are both made of soft rubber, while the first rubber strip's inner layer is made of hard rubber. The first rubber strip's outer, middle, and inner layers are integrally co-extruded profiles. And / or, the second rubber strip's outer and middle layers are both made of soft rubber, while the second rubber strip's inner layer is made of hard rubber. The second rubber strip's outer, middle, and inner layers are integrally co-extruded profiles.

3. The suitcase adhesive strip and internal reinforcing structure co-extruded with soft and hard rubber according to claim 1, characterized in that, The inner layer of the first adhesive strip includes a transverse portion, a left vertical reinforcing rib, a left transverse reinforcing rib, a left snap-fit ​​block, a right snap-fit ​​block, a right vertical reinforcing rib, and a snap-fit ​​portion, wherein: The vertical reinforcing rib on the left side of the inner layer of the first adhesive strip is vertically arranged below the left end of the horizontal part of the inner layer of the first adhesive strip; The horizontal reinforcing rib on the left side of the inner layer of the first adhesive strip is horizontally positioned to the right of the vertical reinforcing rib on the left side of the inner layer of the first adhesive strip; The vertical reinforcing rib on the right side of the inner layer of the first adhesive strip is vertically arranged below the right end of the horizontal part of the inner layer of the first adhesive strip; The left snap-fit ​​block of the inner layer of the first adhesive strip is vertically disposed below the horizontal part of the inner layer of the first adhesive strip and close to the vertical reinforcing rib on the right side of the inner layer of the first adhesive strip; The right snap-fit ​​block of the inner layer of the first adhesive strip is located at the lower end of the vertical reinforcing rib on the right side of the inner layer of the first adhesive strip; The first inner layer left snap-fit ​​block, the first inner layer horizontal portion, the first inner layer right vertical reinforcing rib, and the first inner layer right snap-fit ​​block together form a first inner layer snap-fit ​​portion with an opening facing downwards, and the first inner lining zipper is sleeved inside the first inner layer snap-fit ​​portion.

4. The suitcase adhesive strip and internal reinforcing structure co-extruded with soft and hard rubber according to claim 3, characterized in that, The first internal reinforcement structure includes a lateral portion of the first internal reinforcement structure, a left-side latch of the first internal reinforcement structure, a right-side latch of the first internal reinforcement structure, a first left-side extension of the first internal reinforcement structure, an end latch of the first left-side extension of the first internal reinforcement structure, and a second left-side extension of the first internal reinforcement structure, wherein: The left side buckle of the first internal reinforcement structure is vertically disposed above the left end of the horizontal part of the first internal reinforcement structure, and is used to engage with the left side buckle of the first internal reinforcement structure and the left side horizontal reinforcing rib of the first adhesive strip when the first internal reinforcement structure is engaged with the inner layer of the first adhesive strip. The right-side buckle of the first internal reinforcement structure is vertically disposed above the right end of the horizontal part of the first internal reinforcement structure, and is used to engage with the left side of the left-side snap-fit ​​block of the first internal reinforcement structure and the first inner layer of the adhesive strip when the first internal reinforcement structure is snapped with the first inner layer of the adhesive strip. The first extension on the left side of the first internal reinforcement structure is U-shaped, with its right end connected to the left end of the horizontal part of the first internal reinforcement structure. The top of its left end is provided with a buckle for the end of the first extension on the left side of the first internal reinforcement structure, which is used to engage the lower end of the vertical reinforcing rib on the left side of the first adhesive strip inner layer with the lowest point of the U-shaped structure of the first extension on the left side of the first internal reinforcement structure when the first internal reinforcement structure is engaged with the inner layer of the first adhesive strip. The buckle for the end of the first extension on the left side of the first internal reinforcement structure is engaged with the left end of the horizontal part of the first adhesive strip inner layer. The second extension on the left side of the first internal reinforcement structure is n-shaped, and its right end is connected to the surface layer of the left end of the first extension on the left side of the first internal reinforcement structure.

5. The suitcase adhesive strip and internal reinforcing structure co-extruded with soft and hard rubber according to claim 4, characterized in that, The first internal reinforcement structure further includes a middle layer vertical reinforcing rib, which is vertically disposed between the left side buckle and the right side buckle of the first internal reinforcement structure. The vertical height of the vertical reinforcing rib in the middle layer of the first internal reinforcement structure is less than or equal to the distance between the horizontal part of the first internal reinforcement structure and the horizontal part of the first adhesive strip when the first internal reinforcement structure is snapped into the inner layer of the first adhesive strip.

6. The suitcase adhesive strip and internal reinforcing structure co-extruded with soft and hard rubber according to claim 3, characterized in that, The opening of the first box shell is divided into the following steps in the circumferential direction: the top straight edge step of the opening of the first box shell, the top first corner step of the opening of the first box shell, the left straight edge step of the opening of the first box shell, the bottom first corner step of the opening of the first box shell, the bottom straight edge step of the opening of the first box shell, the bottom second corner step of the opening of the first box shell, the right straight edge step of the opening of the first box shell, and the top second corner step of the opening of the first box shell. The first adhesive strip is divided into the following areas in the circumferential direction at the opening of the first housing: the top straight edge step assembly area, the top first corner step assembly area, the left straight edge step assembly area, the bottom first corner step assembly area, the bottom straight edge step assembly area, the bottom second corner step assembly area, the right straight edge step assembly area, and the top second corner step assembly area. The first internal reinforcement structure is respectively fixed inside the top straight edge step assembly area of ​​the first adhesive strip, the left straight edge step assembly area of ​​the first adhesive strip, the bottom straight edge step assembly area of ​​the first adhesive strip, and the right straight edge step assembly area of ​​the first adhesive strip. When the first adhesive strip is bent into a frame, the ends of the left vertical reinforcing ribs of the inner layer of the first adhesive strip are cut at the first corner step assembly area at the bottom of the first adhesive strip, the first corner step assembly area at the top of the first adhesive strip, the second corner step assembly area at the top of the first adhesive strip, and the second corner step assembly area at the bottom of the first adhesive strip to facilitate bending at the corners of the frame; the ends of the left vertical reinforcing ribs of the inner layer of the first adhesive strip are kept in their original cross-sectional shape at the straight edge step assembly area at the bottom of the first adhesive strip, the straight edge step assembly area at the left side of the first adhesive strip, the straight edge step assembly area at the top of the first adhesive strip, and the straight edge step assembly area at the right side of the first adhesive strip to maintain the structural strength of the first adhesive strip; The cutting width at the first corner step assembly area at the bottom of the first adhesive strip, the first corner step assembly area at the top of the first adhesive strip, the second corner step assembly area at the top of the first adhesive strip, and the second corner step assembly area at the bottom of the first adhesive strip is equal to the arc length of the radius of the first corner step at the bottom of the first box opening, the first corner step at the top of the first box opening, the second corner step at the top of the first box opening, and the second corner step at the bottom of the first box opening.

7. The suitcase adhesive strip and internal reinforcing structure co-extruded with soft and hard rubber according to claim 1, characterized in that, The second inner layer of the adhesive strip includes a transverse portion, a right-side vertical reinforcing rib, a right-side transverse reinforcing rib, a right-side snap-fit ​​block, a left-side snap-fit ​​block, a left-side vertical reinforcing rib, and a snap-fit ​​portion, wherein: The vertical reinforcing rib on the right side of the inner layer of the second adhesive strip is vertically positioned below the right end of the horizontal portion of the inner layer of the second adhesive strip; The horizontal reinforcing rib on the right side of the inner layer of the second adhesive strip is horizontally positioned to the left of the vertical reinforcing rib on the right side of the inner layer of the second adhesive strip; The vertical reinforcing rib on the left side of the inner layer of the second adhesive strip is vertically positioned below the left end of the horizontal portion of the inner layer of the second adhesive strip; The right snap-fit ​​block of the inner layer of the second adhesive strip is vertically disposed below the horizontal part of the inner layer of the second adhesive strip and close to the left vertical reinforcing rib of the inner layer of the second adhesive strip; The left snap-fit ​​block of the inner layer of the second adhesive strip is located at the lower end of the vertical reinforcing rib on the left side of the inner layer of the second adhesive strip; The second inner layer right snap block, the second inner layer horizontal part, the second inner layer left vertical reinforcing rib and the second inner layer left snap block together form a second inner layer snap part with an opening facing downwards, and the second inner lining zipper is sleeved inside the second inner layer snap part.

8. The suitcase adhesive strip and internal reinforcing structure co-extruded with soft and hard rubber according to claim 7, characterized in that, The second internal reinforcement structure includes a transverse portion of the second internal reinforcement structure, a right-side latch of the second internal reinforcement structure, a left-side latch of the second internal reinforcement structure, a right-side first extension of the second internal reinforcement structure, an end latch of the right-side first extension of the second internal reinforcement structure, and a right-side second extension of the second internal reinforcement structure, wherein: The right-side buckle of the second internal reinforcement structure is vertically disposed above the right end of the transverse portion of the second internal reinforcement structure, and is used to engage with the right-side buckle of the second internal reinforcement structure and the right-side transverse reinforcing rib of the second adhesive strip when the second internal reinforcement structure is engaged with the inner layer of the second adhesive strip. The left side buckle of the second internal reinforcement structure is vertically disposed above the left end of the horizontal part of the second internal reinforcement structure, and is used to engage with each other when the second internal reinforcement structure is engaged with the inner layer of the second adhesive strip; The right side first extension of the second internal reinforcement structure is U-shaped. Its left end is connected to the right end of the horizontal part of the second internal reinforcement structure. The top of its right end is provided with a buckle for the end of the right side first extension of the second internal reinforcement structure. When the second internal reinforcement structure is engaged with the inner layer of the second adhesive strip, the lower end of the right vertical reinforcing rib of the inner layer of the second adhesive strip is engaged with the lowest point of the U-shaped structure of the right side first extension of the second internal reinforcement structure. The buckle for the end of the right side first extension of the second internal reinforcement structure is engaged with the right end of the horizontal part of the inner layer of the second adhesive strip. The second extension on the right side of the second internal reinforcement structure is n-shaped, and its left end is connected to the right end surface layer of the second extension on the right side of the second internal reinforcement structure.

9. The suitcase adhesive strip and internal reinforcing structure co-extruded with soft and hard rubber according to claim 8, characterized in that, The second internal reinforcement structure also includes a middle layer vertical reinforcing rib, which is vertically disposed between the right side buckle and the left side buckle of the second internal reinforcement structure. The vertical height of the vertical reinforcing rib in the middle layer of the second internal reinforcement structure is less than or equal to the distance between the horizontal part of the second internal reinforcement structure and the horizontal part of the second adhesive strip when the second internal reinforcement structure is engaged with the inner layer of the second adhesive strip.

10. The suitcase adhesive strip and internal reinforcing structure co-extruded with soft and hard rubber according to claim 7, characterized in that, The opening of the second box shell is divided into the following sections in the circumferential direction: the top straight edge step of the opening of the second box shell, the top first corner step of the opening of the second box shell, the left straight edge step of the opening of the second box shell, the bottom first corner step of the opening of the second box shell, the bottom straight edge step of the opening of the second box shell, the bottom second corner step of the opening of the second box shell, the right straight edge step of the opening of the second box shell, and the top second corner step of the opening of the second box shell. The second adhesive strip is divided into the following areas in the circumferential direction at the opening of the second housing: the top straight edge step assembly area of ​​the second adhesive strip, the top first corner step assembly area of ​​the second adhesive strip, the left straight edge step assembly area of ​​the second adhesive strip, the bottom first corner step assembly area of ​​the second adhesive strip, the bottom straight edge step assembly area of ​​the second adhesive strip, the bottom second corner step assembly area of ​​the second adhesive strip, the right straight edge step assembly area of ​​the second adhesive strip, and the top second corner step assembly area of ​​the second adhesive strip. The second internal reinforcement structure is fixed inside the top straight edge step assembly area of ​​the second adhesive strip, the left straight edge step assembly area of ​​the second adhesive strip, the bottom straight edge step assembly area of ​​the second adhesive strip, and the right straight edge step assembly area of ​​the second adhesive strip, respectively. When the second adhesive strip is bent into a frame, the ends of the right vertical reinforcing ribs of the inner layer of the second adhesive strip are cut at the first corner step assembly area at the bottom of the second adhesive strip, the first corner step assembly area at the top of the second adhesive strip, the second corner step assembly area at the top of the second adhesive strip, and the second corner step assembly area at the bottom of the second adhesive strip to facilitate bending at the corners of the frame; the ends of the right vertical reinforcing ribs of the inner layer of the second adhesive strip are kept in their original cross-sectional shape at the straight edge step assembly area at the bottom of the second adhesive strip, the straight edge step assembly area at the left side of the second adhesive strip, the straight edge step assembly area at the top of the second adhesive strip, and the straight edge step assembly area at the right side of the second adhesive strip to maintain the structural strength of the second adhesive strip; The cutting width at the assembly areas of the bottom first corner step of the second adhesive strip, the top first corner step of the second adhesive strip, the top second corner step of the second adhesive strip, and the bottom second corner step of the second adhesive strip is equal to the arc length of the radius of the first corner step at the bottom of the second box opening, the first corner step at the top of the second box opening, the second corner step at the top of the second box opening, and the second corner step at the bottom of the second box opening.

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