High-strength luggage case shell with multiple convex-concave grains
By designing multiple raised and recessed textures in a two-tone color scheme on the suitcase shell, the problem of insufficient strength and aesthetics in the suitcase shell is solved, achieving a high-strength and stylish suitcase design.
Patent Information
- Application Number
- CN202520865228.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-06
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-05-06
AI Technical Summary
Existing methods for improving the strength of luggage shells increase weight or cost, and their monotonous appearance makes it difficult to meet the demands for fashion and personalization.
The design employs a multi-layered raised and recessed texture, connecting the left and right half-shells of different colors through a joint area. The shell walls are equipped with grooves and ridges in different directions, forming a combination of raised and recessed textures that increase the bending and compressive section modulus, while the two-color combination enhances the aesthetics.
It improves the strength and aesthetics of suitcases, meets the requirements of fashion and personalization, and is inexpensive and easy to promote.
Smart Images

Figure CN223929663U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of luggage, specifically to a high-strength luggage shell with multiple raised and recessed textures. Background Technology
[0002] People desire strong suitcases for travel to withstand pressure and carry heavier items. Currently, improving suitcase strength is mostly achieved by changing the material of the shell, increasing the wall thickness, or adding a rigid frame. While these methods increase strength, some increase the suitcase's weight, and others increase its cost. Furthermore, most current suitcase shells are monotonous and flat, lacking aesthetic appeal and failing to meet people's demands for fashion and personalization. Therefore, it is necessary to improve suitcase shells. How to enhance the strength and aesthetics of manufactured suitcases by changing the shell structure and using multi-color combinations to satisfy people's pursuit of fashion and personalization is the problem to be solved in this case. Utility Model Content
[0003] To overcome the shortcomings of existing technologies, this utility model discloses a high-strength suitcase shell with multiple raised and recessed textures, comprising a left half-shell and a right half-shell. A connecting area is provided between the left and right half-shells, forming a semi-enclosed cavity shell. One side of the cavity shell is open. The shell walls of the left and right half-shells are different colors, and each half-shell wall has several grooves or protrusions with different directions. This utility model improves the suitcase shell by using grooves and protrusions arranged longitudinally and laterally in different areas to increase the bending and compressive section modulus of the shell. A two-tone design enhances the aesthetics of the shell, thereby increasing the strength of the suitcase made from this shell and meeting people's demands for fashion and personalization.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0005] A high-strength suitcase shell with multiple raised and recessed textures, which can be used to manufacture the upper and lower bodies of a suitcase, is characterized by comprising a left half shell and a right half shell, wherein a connecting area is provided between the left half shell and the right half shell, the left half shell and the right half shell are connected by the connecting area and form an integrally formed semi-enclosed cavity shell, one side of the cavity shell is open, the shell walls of the left half shell and the right half shell are different colors and each shell wall is provided with several grooves or protrusions, and the grooves or protrusions on the shell walls of the left half shell and the right half shell are in different directions.
[0006] The hollow shell formed by the connection area between the left and right halves of the shell is a square box shell. The outer surfaces of the box shell are respectively defined as the outer surface of the shell wall, the front outer surface of the shell wall, the rear outer surface of the shell wall, the left outer surface of the shell wall, the right outer surface of the shell wall, and the open end face.
[0007] The left half of the shell has several longitudinal grooves that are recessed inward along the outer surface of the shell wall, the front outer surface of the shell wall, and the rear outer surface of the shell wall. The two ends of the corresponding longitudinal grooves extend toward the open end face of the shell but are not connected to the open end face.
[0008] The left half of the shell has several longitudinal grooves that are recessed inward along the outer surface of the left side of the shell wall. The two ends of the corresponding longitudinal grooves extend towards the outer surface of the front side of the shell wall and the outer surface of the rear side of the shell wall, respectively, but are not connected to the outer surface of the front side of the shell wall and the outer surface of the rear side of the shell wall.
[0009] The right half of the shell has several inwardly recessed surfaces along the outer surface of the shell wall and the outer surface of the right side of the shell wall. One end of the inwardly recessed surface along the outer surface of the shell wall extends toward the connecting area but is not connected to the connecting area. The other end of the inwardly recessed surface along the outer surface of the right side of the shell wall extends toward the open end face of the shell but is not connected to the open end face.
[0010] The right half of the shell is provided with several inwardly recessed surfaces along the outer surface of the front side and the outer surface of the rear side of the shell wall. One end of the corresponding inwardly recessed surface extends towards the connecting area but is not connected to the connecting area, and the other end extends towards the outer surface of the right side of the shell wall but is not connected to the outer surface of the right side of the shell wall.
[0011] At the junction of two adjacent transverse inner surfaces, there is a trapezoidal transverse ridge. The top surface of the transverse ridge is flush with the corresponding outer surface of the shell wall, the outer surface of the right side of the shell wall, the outer surface of the front side of the shell wall, or the outer surface of the rear side of the shell wall.
[0012] As described above, the advantages of this utility model's high-strength suitcase shell with multiple raised and recessed textures are as follows: The left and right halves of the shell, each a different color, are connected by a connecting area to form a semi-enclosed hollow shell. Each half has several grooves or ridges on its shell wall, with different directions forming a longitudinally and transversely arranged raised and recessed texture. The grooves and ridges arranged longitudinally and transversely in different areas of the shell increase the shell's bending and compressive section modulus. The two-color design enhances the shell's aesthetics, thereby improving the strength of the suitcase made from this shell and meeting people's demands for fashion and personalization. This utility model has a reasonable design, simple structure, low cost, and is easy to promote. Attached Figure Description
[0013] Figure 1This is a general schematic diagram of a high-strength suitcase shell with multiple raised and recessed textures according to the present invention;
[0014] Figure 2 for Figure 1 A-direction diagram in the diagram;
[0015] Figure 3 for Figure 1 A schematic diagram of direction B in the diagram;
[0016] Figure 4 for Figure 1 CC diagram in the image;
[0017] Figure 5 for Figure 1 DD diagram in the image;
[0018] Figure 6 for Figure 4 Enlarged schematic diagram of part E in the diagram;
[0019] Figure 7 for Figure 5 Enlarged schematic diagram of part F in the diagram.
[0020] Figure label:
[0021] 1. Left half shell; 11. Longitudinal groove; 2. Right half shell; 21. Lateral inner recessed surface; 22. Lateral protrusion; 3. Connecting area; M1. Outer surface of shell wall; M2. Outer surface of front side of shell wall; M3. Outer surface of rear side of shell wall; M4. Outer surface of left side of shell wall; M5. Outer surface of right side of shell wall; M6. Open end face. Detailed Implementation
[0022] The present invention will be further described below through specific embodiments.
[0023] like Figures 1 to 3 As shown, this utility model discloses a high-strength suitcase shell with multiple raised and recessed textures. This shell can be used to manufacture the upper and lower bodies of a suitcase. It includes a left half-shell 1 and a right half-shell 2, with a connecting area 3 between the left half-shell 1 and the right half-shell 2. The left half-shell 1 and the right half-shell 2 are connected by the connecting area 3 and form a semi-enclosed square cavity shell. One side of the shell is open. The outer surfaces of the shell are respectively designated as the front outer surface M1, the front outer surface M2, the rear outer surface M3, the left outer surface M4, the right outer surface M5, and the open end face M6. The shell walls of the left half-shell 1 and the right half-shell 2 are different colors and each has several grooves or protrusions on its shell wall. The directions of the grooves or protrusions on the shell walls of the left half-shell 1 and the right half-shell 2 are different.
[0024] like Figures 1 to 4 , Figure 6As shown, the left half of the shell 1 of this utility model has several longitudinally recessed grooves 11 along the outer surface M1, the front outer surface M2, and the rear outer surface M3 of the shell wall. The two ends of the corresponding longitudinal grooves 11 extend towards the open end face M6 of the shell but are not connected to the open end face M6. The left half of the shell 1 also has several longitudinally recessed grooves 11 along the left outer surface M4 of the shell wall. The two ends of the corresponding longitudinal grooves 11 extend towards the front outer surface M2 and the rear outer surface M3 of the shell wall, respectively, but are not connected to the front outer surface M2 and the rear outer surface M3 of the shell wall.
[0025] like Figure 1 , Figure 3 , Figure 5 and Figure 7 As shown, the right half of the shell 2 of this invention has several inwardly recessed transverse surfaces 21 along the outer surface M1 and the right outer surface M5 of the shell wall. One end of the inwardly recessed surface 21 along the outer surface M1 extends towards the connecting area 3 but is not connected to the connecting area 3, and the other end of the inwardly recessed surface 21 along the right outer surface M5 extends towards the open end face M6 of the shell but is not connected to the open end face M6. The right half of the shell 2 also has several inwardly recessed transverse surfaces 21 along the front outer surface M2 and the rear outer surface M3 of the shell wall. One end of the corresponding inwardly recessed surface 21 extends towards the connecting area 3 but is not connected to the connecting area 3, and the other end extends towards the right outer surface M5 but is not connected to the right outer surface M5 of the shell wall. At the junction of two adjacent transverse inner recessed surfaces 21, there is a trapezoidal transverse protrusion 22. The top surface of the transverse protrusion 22 is flush with the corresponding outer surface M1 of the shell wall, the outer surface M5 of the right side of the shell wall, the outer surface M2 of the front side of the shell wall, or the outer surface M3 of the rear side of the shell wall.
[0026] This invention improves the suitcase shell by connecting the left half shell 1 and the right half shell 2 of different colors through a connecting area 3 to form a semi-enclosed cavity shell. Each shell wall has several grooves or ridges with different directions to form a pattern of longitudinal and transverse convex and concave textures. The grooves and ridges arranged longitudinally and transversely in different areas of the shell increase the bending and compressive section modulus of the shell. The two-color matching enhances the aesthetics of the shell, thereby improving the strength of the suitcase made from this shell and meeting people's pursuit of fashion and personalization.
[0027] The above is only one specific embodiment of the present utility model, but the design concept of the present utility model is not limited thereto. Any non-substantial modifications made to the present utility model using this concept shall be deemed as an infringement of the protection scope of the present utility model.
Claims
1. A high-strength suitcase shell with multiple raised and recessed textures, which can be used to manufacture the upper and lower bodies of a suitcase, characterized in that: It includes a left half shell (1) and a right half shell (2), and a connecting area (3) is provided between the left half shell (1) and the right half shell (2). The left half shell (1) and the right half shell (2) are connected by the connecting area (3) and form a semi-enclosed cavity shell. One side of the cavity shell is open. The shell walls of the left half shell (1) and the right half shell (2) are different colors and have several grooves or protrusions on their respective shell walls. The grooves or protrusions on the shell walls of the left half shell (1) and the right half shell (2) are in different directions.
2. A high-strength suitcase shell with multiple raised and recessed textures according to claim 1, characterized in that: The hollow shell formed by the connection area (3) of the left half shell (1) and the right half shell is a square box shell. The outer surfaces of the box shell are respectively set as the outer surface of the shell wall (M1), the outer surface of the front side of the shell wall (M2), the outer surface of the rear side of the shell wall (M3), the outer surface of the left side of the shell wall (M4), the outer surface of the right side of the shell wall (M5) and the open end face (M6).
3. A high-strength suitcase shell with multiple raised and recessed textures according to claim 2, characterized in that: The left half shell (1) has several longitudinal grooves (11) that are recessed inward along the outer surface (M1) of the shell wall, the front outer surface (M2) of the shell wall, and the rear outer surface (M3) of the shell wall. The two ends of the corresponding longitudinal grooves (11) are not connected to the open end face (M6).
4. A high-strength suitcase shell with multiple raised and recessed textures according to claim 3, characterized in that: The left half shell (1) has several longitudinal grooves (11) that are recessed inward along the outer surface (M4) on the left side of the shell wall. The two ends of the corresponding longitudinal grooves (11) are not connected to the outer surface (M2) on the front side of the shell wall and the outer surface (M3) on the rear side of the shell wall.
5. A high-strength suitcase shell with multiple raised and recessed textures according to claim 2, characterized in that: The right half shell (2) is provided with several inwardly recessed transverse surfaces (21) along the outer surface (M1) of the shell wall and the outer surface (M5) of the right side of the shell wall. One end of the transverse recessed surface (21) provided along the outer surface (M1) of the shell wall is not connected to the connecting area (3), and the other end of the transverse recessed surface (21) provided along the outer surface (M5) of the right side of the shell wall is not connected to the open end face (M6).
6. A high-strength suitcase shell with multiple raised and recessed textures according to claim 5, characterized in that: The right half shell (2) is provided with several inwardly recessed surfaces (21) along the outer surface of the front side (M2) and the outer surface of the rear side (M3) of the shell wall. One end of the corresponding inwardly recessed surface (21) is not connected to the connecting area (3), and the other end is not connected to the outer surface of the right side of the shell wall (M5).
7. A high-strength suitcase shell with multiple raised and recessed textures according to claim 6, characterized in that: A trapezoidal transverse ridge (22) is provided at the junction of two adjacent transverse inner recessed surfaces (21). The top surface of the transverse ridge (22) is flush with the corresponding outer surface of the shell wall (M1), the outer surface of the right side of the shell wall (M5), the outer surface of the front side of the shell wall (M2), or the outer surface of the rear side of the shell wall (M3).