A luggage case with a concealed installation of an aluminum mouth frame
Patent Information
- Application Number
- CN202521954451.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-11
- Publication Date
- 2026-08-28
- Estimated Expiration
- 2035-09-11
Smart Images

Figure CN224685331U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of luggage, specifically to a suitcase with a concealed aluminum frame. Background Technology
[0002] Most suitcases have a plastic frame between the upper and lower shells for sealing and support, and are opened and closed via zippers. However, suitcases supported by plastic frames and flexibly connected by zippers are prone to deformation at the opening when carrying heavy loads. Therefore, heavy-duty or high-end suitcases often use two rigid aluminum frames that can be interlocked to support the opening of the upper and lower shells and for opening and closing. Currently, suitcases with aluminum frames mostly cover the opening of the upper and lower shells or insert the opening of the upper and lower shells into a groove in the middle of the aluminum frame before hinged or riveted. Because the main body of the metal aluminum frame is exposed outside the opening of the upper and lower shells, the overall appearance of the suitcase looks bulky and affects its aesthetics. Therefore, there is a demand for a suitcase with a concealed aluminum frame, where the main body of the aluminum frame is covered by the upper and lower shells during installation, thus avoiding exposure of the metal frame and enhancing the aesthetics of the suitcase. In view of this, this case arises. Utility Model Content
[0003] To overcome the shortcomings of existing technologies, this utility model discloses a suitcase with a concealed aluminum frame, comprising an upper shell, a lower shell, an upper frame, and a lower frame. The inner walls of the upper and lower shells are respectively provided with snap-fit grooves, and the inner and outer sides of the upper and lower frames are respectively provided with corrugated connecting surfaces and straight connecting surfaces. This utility model places the hinged upper and lower frames between the upper and lower shells. The upper and lower frames are snapped and glued together by the snap-fit grooves within the upper and lower shells. The opening panels of the upper and lower shells cover the straight connecting surfaces on the outer sides of the corresponding upper or lower frames, thus concealing the upper and lower frames inside the upper and lower shells and preventing the aluminum frame bodies from being exposed, thereby enhancing the aesthetics of the suitcase.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0005] A suitcase with a concealed aluminum frame is characterized by comprising an upper shell, a lower shell, an upper frame, and a lower frame. Both the upper and lower shells are open cavities with their openings facing each other. The inner walls of both shells have snap-fit grooves. The inner and outer sides of the upper and lower frames each have corrugated and straight connecting surfaces. The upper frame is positioned above the lower frame and is hinged to it. The openings of the upper and lower frames can be fitted together. The upper and lower frames are connected to the snap-fit grooves within the upper and lower shells, respectively. The opening panels of the upper and lower shells can cover the straight connecting surfaces on the outer sides of their respective upper or lower frames, thus concealing the upper and lower frames within the upper and lower shells.
[0006] The corrugated connecting surfaces on the inner sides of the upper and lower frames are respectively designated as the upper frame corrugated surface and the lower frame corrugated surface, and the straight connecting surfaces on the outer sides of the upper and lower frames are respectively designated as the upper frame flat surface and the lower frame flat surface.
[0007] The snap-fit grooves inside the upper and lower housings are respectively set as upper snap-fit grooves and lower snap-fit grooves. The upper snap-fit groove can be snapped onto the upper frame flat joint surface and the upper frame corrugated surface of the upper frame and glued together. The lower snap-fit groove can be snapped onto the lower frame flat joint surface and the lower frame corrugated surface of the lower frame and glued together.
[0008] Both the upper and lower frames are square frames with rounded corners, and both are made of rigid aluminum profiles.
[0009] The upper frame has a V-shaped groove at its opening, and the lower frame has an inverted V-shaped edge at its opening. The inverted V-shaped edge of the lower frame can be inserted into the V-shaped groove of the upper frame.
[0010] An outwardly protruding upper edge and a lower edge are respectively provided on the outer side of the upper frame and the outer side of the lower frame. The upper edge is located at one end of the flat joint surface of the upper frame and is perpendicular to the flat joint surface of the upper frame. The lower edge is located at one end of the flat joint surface of the lower frame and is perpendicular to the flat joint surface of the lower frame. When the upper frame and the lower frame are fitted together, their upper edge and lower edge can approach each other.
[0011] A hinge is provided on the same side frame between the upper frame and the lower frame, and the upper and lower shells connected to the upper and lower frames can be rotated around the hinge.
[0012] Furthermore, the luggage with a concealed aluminum frame can also have an easily detachable lining inside its upper and lower shells.
[0013] Furthermore, the suitcase with a concealed aluminum frame also includes latches, casters, handles, and telescopic rods connected to the upper and / or lower shells.
[0014] As described above, the advantages of this utility model for a concealed aluminum frame luggage are as follows: The inner walls of the upper and lower shells are respectively provided with snap-fit grooves; the inner and outer sides of the upper and lower frames are respectively provided with corrugated connecting surfaces and straight connecting surfaces. The hinged upper and lower frames are placed between the upper and lower shells, and are snapped and glued together by the snap-fit grooves within the upper and lower shells. The opening panels of the upper and lower shells cover the straight connecting surfaces on the outer sides of the corresponding upper or lower frames, thus concealing the upper and lower frames inside the upper and lower shells and preventing the aluminum frame bodies from being exposed, thereby enhancing the aesthetics of the luggage. This utility model has a reasonable design, simple structure, low cost, and is easy to promote. Attached Figure Description
[0015] Figure 1 This is a general schematic diagram of a suitcase with a concealed aluminum frame as described in this utility model;
[0016] Figure 2 This is an enlarged cross-sectional view of the upper and lower frames when they are fitted together.
[0017] Figure 3 This is an enlarged cross-sectional view of the upper frame;
[0018] Figure 4 This is an enlarged cross-sectional view of the lower frame;
[0019] Figure 5 This is an enlarged cross-sectional view of the upper housing.
[0020] Figure 6 This is an enlarged cross-sectional view of the lower casing.
[0021] Figure label:
[0022] 1 Upper casing; 11 Upper slot; 2 Lower casing; 21 Lower slot; 3 Upper frame; 31 Groove; 32 Upper flange; 301 Upper frame flat surface; 302 Upper frame corrugated surface; 4 Lower frame; 41 Edge; 42 Lower flange; 401 Lower frame flat surface; 402 Lower frame corrugated surface. Detailed Implementation
[0023] The present invention will be further described below through specific embodiments.
[0024] like Figure 1As shown, the present invention discloses a suitcase with a concealed aluminum frame, comprising an upper shell 1, a lower shell 2, an upper frame 3, and a lower frame 4; it also includes latches, casters, handles, and a telescopic rod connected to the upper shell 1 and / or the lower shell 2, which are not shown in the figure. In this embodiment, the interior of the upper and lower shells is further provided with a lining and a lining chain, which can be movably connected to the upper frame 3 and the lower frame 4.
[0025] like Figure 1 , Figure 5 and Figure 6 As shown, the upper shell 1 and the lower shell 2 of this utility model are both open cavities. The corners of the upper shell 1 and the lower shell 2 are rounded. The openings of the upper shell 1 and the lower shell 2 are arranged opposite each other. The upper slot 11 and the lower slot 21 are respectively provided on the inner sidewalls of the upper shell 1 and the lower shell 2.
[0026] like Figures 1 to 4 As shown, the upper frame 3 and lower frame 4 of this utility model are both square frames with rounded corners. Both the upper frame 3 and lower frame 4 are made of hard aluminum profiles. The inner and outer sides of the upper frame 3 are respectively provided with an upper frame corrugated surface 302 and an upper frame flat surface 301. The inner and outer sides of the lower frame 4 are respectively provided with a lower frame corrugated surface 402 and a lower frame flat surface 401. The opening of the upper frame 3 is provided with a V-shaped groove 31, and the opening of the lower frame 4 is provided with an inverted V-shaped edge 41. The upper frame 3 is placed above the lower frame 4. A hinge is provided on the same side frame between the upper frame 3 and the lower frame 4. The upper frame 3 and the lower frame 4 can be rotated around the hinge. The inverted V-shaped edge 41 of the lower frame 4 can be inserted into the V-shaped groove 31 of the upper frame 3 so that the opening of the upper frame 3 and the opening of the lower frame 4 are fitted together.
[0027] like Figures 1 to 6 As shown, the upper slot 11 of the upper housing 1 can be snapped onto the upper frame flat joint surface 301 and the upper frame corrugated surface 302 of the upper frame 3 and glued together. The lower slot 21 of the lower housing 2 can be snapped onto the lower frame flat joint surface 401 and the lower frame corrugated surface 402 of the lower frame 4 and glued together. The opening wall panels of the upper housing 1 and the lower housing 2 can cover the upper frame flat joint surface 301 or the lower frame flat joint surface 401 provided on the outer side of their respective upper frame 3 or lower frame 4, so that the upper frame 3 and the lower frame 4 are concealed inside the upper housing 1 and the lower housing 2. An upper stop 32 and a lower stop 42 protruding outward are respectively provided on the outer side of the upper frame 3 and the outer side of the lower frame 4. The upper stop 32 is located at one end of the upper frame flat joint surface 301 and is perpendicular to the upper frame flat joint surface 301. The lower stop 42 is located at one end of the lower frame flat joint surface 401 and is perpendicular to the lower frame flat joint surface 401. When the upper frame 3 and the lower frame 4 are fitted together, their upper stop 32 and lower stop 42 can approach each other.
[0028] This invention features snap-fit grooves on the inner walls of the upper shell 1 and the lower shell 2, and corrugated and straight connecting surfaces on the inner and outer sides of the upper frame 3 and the lower frame 4, respectively. The hinged upper frame 3 and lower frame 4 are placed between the upper shell 1 and the lower shell 2, and are snapped and glued by the snap-fit grooves in the upper shell 1 and the lower shell 2, respectively. The opening panels of the upper shell 1 and the lower shell 2 cover the straight connecting surfaces on the outer sides of the corresponding upper frame 3 or lower frame 4, so that the upper frame 3 and lower frame 4 are concealed inside the upper shell 1 and the lower shell 2, thus avoiding the exposure of the upper frame 3 and lower frame 4 made of aluminum profile, thereby enhancing the aesthetics of the suitcase.
[0029] 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 suitcase with a concealed aluminum frame, characterized in that: It includes an upper shell (1), a lower shell (2), an upper frame (3), and a lower frame (4). The upper shell (1) and the lower shell (2) are both open cavities. The openings of the upper shell (1) and the lower shell (2) face each other. A snap-fit groove is provided on the inner wall of the upper shell (1) and the lower shell (2). The inner and outer sides of the upper frame (3) and the lower frame (4) are respectively provided with a corrugated connecting surface and a straight connecting surface. The upper frame (3) is placed above the lower frame (4) and the upper frame (3) is hinged to the lower frame (4). The opening of the upper frame (3) and the opening of the lower frame (4) can be fitted together. The upper frame (3) and the lower frame (4) are respectively connected to the snap-fit grooves in the upper shell (1) and the lower shell (2). The opening wall panels of the upper shell (1) and the lower shell (2) can cover the flat connecting surface set on the outside of the corresponding upper frame (3) or lower frame (4).
2. The suitcase with a concealed aluminum frame as described in claim 1, characterized in that: The corrugated connecting surfaces inside the upper frame (3) and lower frame (4) are respectively set as upper frame corrugated surface (302) and lower frame corrugated surface (402), and the straight connecting surfaces outside the upper frame (3) and lower frame (4) are respectively set as upper frame flat surface (301) and lower frame flat surface (401).
3. A suitcase with a concealed aluminum frame as described in claim 2, characterized in that: The snap-fit grooves in the upper housing (1) and the lower housing (2) are respectively set as upper snap-fit groove (11) and lower snap-fit groove (21). The upper snap-fit groove (11) can be snapped onto the upper frame flat joint surface (301) and upper frame corrugated surface (302) of the upper frame (3) and glued. The lower snap-fit groove (21) can be snapped onto the lower frame flat joint surface (401) and lower frame corrugated surface (402) of the lower frame (4) and glued.
4. A suitcase with a concealed aluminum frame as described in claim 3, characterized in that: Both the upper frame (3) and the lower frame (4) are square frames.
5. A suitcase with a concealed aluminum frame as described in claim 4, characterized in that: The upper frame (3) has a V-shaped groove (31) at its opening, and the lower frame (4) has an inverted V-shaped rim (41) at its opening. The inverted V-shaped rim (41) of the lower frame (4) can be embedded into the V-shaped groove (31) of the upper frame (3).
6. A suitcase with a concealed aluminum frame as described in claim 5, characterized in that: An outwardly protruding upper edge (32) and lower edge (42) are provided on the outer side of the upper frame (3) and the outer side of the lower frame (4), respectively. The upper edge (32) is located at one end of the flat joint surface (301) of the upper frame, and the lower edge (42) is located at one end of the flat joint surface (401) of the lower frame.