Luggage case capable of being transformed into sliding plate

Abstract

The utility model belongs to the field of luggage cases, and particularly relates to a luggage case capable of being transformed into a sliding plate. The luggage case is composed of a first case body and a second case body which are oppositely buckled, are connected through a detachable hinge device, can be relatively rotated and opened to form a luggage case main body, and is used for containing articles. After the hinge device is disassembled, the two box bodies become independent parts, and at least one can form a sliding plate structure. The sliding plate structure is at least provided with a straight sliding surface and a side surface surrounding the sliding surface. The hinge device enables the box body to rotate relatively to form a traditional luggage box and realizes function conversion through a detachable function, so that different scene requirements of users are met. The flat and straight sliding surface serves as a contact surface with the ground and provides sliding support, the surrounding side surface serves as a luggage case shell and surrounds the sliding surface to form surrounding edge protection, articles in the luggage case can be protected in the luggage case state, protection can be provided for a user when the luggage case is transformed into a sliding plate, and sliding safety and stability are enhanced.

Description

Technical Field

[0001] This utility model relates to the field of luggage, and more particularly to a luggage that can be transformed into a skateboard. Background Technology

[0002] In current travel scenarios, suitcases, as an indispensable tool for carrying belongings, primarily focus on the storage and transportation of items. Traditional suitcases are typically composed of a precisely assembled core component such as the body, handle, and wheels. The user operates the handle to drive the wheels, enabling convenient carrying of items during travel. However, this singular functional design significantly limits the suitcase's usage scenarios, restricting its use to merely meeting the user's needs for storage and transportation during travel. Once at the destination, the suitcase often becomes an unused item, failing to provide any further added value for the user's subsequent activities.

[0003] As people's lifestyles become increasingly diverse and their travel demands continue to rise, users' functional requirements for travel tools are also increasing. They crave tools that can flexibly adapt to various scenarios and serve multiple purposes, significantly enhancing the convenience of travel and daily life. For example, during travel, users not only expect their suitcases to safely and securely store their belongings, but also envision them transforming into practical tools like skateboards upon arrival at their destination, facilitating short trips, exploring the surrounding environment, or enjoying simple recreational activities. This demand for multifunctionality reflects modern users' high expectations for the innovation and practicality of travel tools.

[0004] In specific scenarios such as outdoor travel and leisure vacations, the single function of traditional suitcases proves particularly inadequate. When users venture onto special terrains like grass, sand, or snow, the suitcase's function becomes extremely limited, serving only as a container for items or a temporary seat. Faced with these complex and varied terrain conditions, the mobility of traditional suitcases is significantly reduced, failing to fully meet the diverse travel needs of users in these special scenarios. Especially on grass and snow, the wheels of traditional suitcases easily sink into the ground, making dragging difficult; while on the beach, the fluidity of the sand makes it difficult for the wheels to gain sufficient traction, further reducing the suitcase's moving efficiency.

[0005] In conclusion, given the functional limitations of traditional suitcases and the ever-growing demand from modern users for diverse travel options, developing a multifunctional suitcase that can transform into a skateboard is particularly important. This new type of suitcase not only meets users' needs for storing and transporting items during travel, but also transforms into a skateboard upon arrival at the destination, providing users with a more convenient and flexible way to travel short distances, thereby greatly enhancing their travel experience and quality of life. Utility Model Content

[0006] The present invention aims to overcome the shortcomings of the single function of traditional suitcases in the prior art, and to provide a suitcase that can be transformed into a skateboard.

[0007] The technical solution adopted by this utility model is to provide a suitcase that can be transformed into a skateboard, including a first box body and a second box body that are fastened to each other. The first box body and the second box body are connected by a hinge device to form a suitcase body that can be rotated open relative to each other. The hinge device is a detachable structure. After the hinge device is disassembled, the first box body and the second box body form independent components. At least one of the first box body and the second box body forms a skateboard structure. The skateboard structure has at least a flat sliding surface and a surrounding side surface around the sliding surface.

[0008] The hinge mechanism allows the first and second compartments of the suitcase to rotate and open relative to each other, forming a traditional suitcase for carrying items. Simultaneously, the detachable nature of the hinge mechanism allows the first and second compartments to become independent components, with at least one forming a skateboard structure with a flat sliding surface and surrounding sides for the user to glide on. This achieves the functional transformation of a suitcase into a skateboard, meeting the user's needs in different scenarios. The flat sliding surface serves as the contact surface with surfaces such as grass, sand, or snow, providing support for gliding. The surrounding sides, as the suitcase shell, enclose the sliding surface to form a protective edge, protecting the contents not only when used as a suitcase but also providing some protection for the user when transformed into a skateboard structure, increasing the safety and stability of gliding.

[0009] Furthermore, the suitcase body also includes a sliding mechanism located on the lower side of the suitcase body. This sliding mechanism provides auxiliary movement functionality. When the suitcase is used as regular luggage, the user can easily and smoothly slide the suitcase body using the sliding mechanism, reducing the user's carrying burden and improving travel convenience. In addition, a hinge device is located on the side of the suitcase body adjacent to the sliding mechanism, allowing the suitcase to open from the side for placing or retrieving items. It also allows the user to easily separate the first and second compartments into a sliding plate structure by disassembling the hinge device when the suitcase body is standing, further enhancing convenience.

[0010] Furthermore, the suitcase body, supported by a sliding mechanism, has a length direction L, a height direction H, and a width direction D when it is standing upright. The length direction L is larger than the height direction H, giving the whole a flat rectangular structure. When the suitcase body transforms into a skateboard structure, the rectangular structure is suitable for users to stand on or sit on for gliding, increasing the contact area between the user and the skateboard structure, improving the stability of gliding, reducing the risk of users falling during gliding, and at the same time, the larger contact area also provides users with a more comfortable riding experience.

[0011] Furthermore, the side where the hinge is installed is designed to be flat, which not only provides a stable mounting base for the hinge, but also allows the suitcase to be opened to its maximum 180° angle for placing or retrieving items.

[0012] Designing the front and back sides of the suitcase as sliding surfaces utilizes the original shell structure. When transforming into a skateboard structure, the surfaces of the front and back sides can be directly used as sliding surfaces without additional structural modifications, simplifying the transformation process and improving the product's practicality and reliability. Furthermore, the formation of curved or sloping transition surfaces between the sliding surfaces and the opposite flat surfaces creates rounded edges on both the suitcase body and the skateboard structure, reducing the potential for injury from sharp corners. The transition surfaces also make the gliding process smoother and more natural, further enhancing comfort and safety.

[0013] Furthermore, the sides opposite the flat surface are curved, forming the front end of the gliding structure. The curved shape allows the skateboard structure to transition naturally during gliding, reducing friction and jerking caused by abrupt changes in contact surface, thus reducing gliding resistance and ensuring smoothness and stability. Simultaneously, the curved surface provides some elastic cushioning; when the skateboard makes slight contact with the ground or obstacles, it absorbs some impact energy, reducing the impact on the skateboard structure and the user's body, and lowering the possibility of injury.

[0014] Furthermore, parallel sliding ribs are provided on the sliding surface, reducing the actual contact area between the sliding surface and the gliding surface. When the skateboard structure glides, the sliding ribs directly contact the ground, reducing friction. This is similar to how the special texture on the bottom of a ski reduces contact with the ice, making gliding smoother. Moreover, the sliding ribs extend from the sliding surface to the curved or sloping transition surface, further enhancing the structural strength of the skateboard's edges and the gliding surface. When the edges or gliding surface of the skateboard structure come into contact with or impact the ground or obstacles, the sliding ribs distribute the force across multiple ribs, reducing the force on a single point and preventing deformation or damage.

[0015] Furthermore, the hinge device includes a first hinge seat respectively disposed on the first housing and a second hinge seat on the second housing, as well as a pivot. The pivot connects the first and second hinge seats into a rotatable whole, allowing the first and second housings to be opened relative to each other to form the main body of the suitcase, meeting the needs of daily luggage storage and carrying. When it is necessary to convert it into a skateboard form, the pivot can be separated from the first or second hinge seat, making the connection between the first and second hinge seats detachable. This allows the first and second housings to form independent components, with at least one of them forming a skateboard structure with a flat sliding surface and a surrounding side.

[0016] Furthermore, the first hinge seat includes a first base fixed to the first housing and a pair of separate bearing seats extending from the first base. The second hinge seat includes a second base fixed to the second housing and a bushing embedded between the two bearing seats. The rotating shaft includes a pair of sub-shafts sliding within the bushing and an elastic support member. The elastic support member supports the two sub-shafts extending from both ends of the bushing and inserting into the two bearing seats, thus enabling the first and second hinge seats to be connected by the rotating shaft into a relatively rotatable whole. When it is necessary to transform the main body of the suitcase into a skateboard structure, only an appropriate external force needs to be applied to overcome the elastic force of the elastic support member, causing the sub-shafts to disengage from the bearing seats. This allows for the disassembly of the first and second hinge seats, thereby separating the first and second housings into independent components, conveniently and quickly completing the transformation process from suitcase to skateboard.

[0017] Furthermore, a pair of operating handles are connected to the sub-shaft, and a pair of symmetrical L-shaped sliding windows are opened on the bushing. The operating handles pass through the L-shaped sliding windows to the outside of the bushing. The length of the sliding space of the L-shaped sliding window in the coaxial direction with the sub-shaft is not less than the length of the sub-shaft extending out of the bushing. The width of the sliding space of the L-shaped sliding window perpendicular to the axis of the sub-shaft is not less than the cross-sectional width of part of the operating handle.

[0018] By directly applying the operating handle and using appropriate external force to overcome the elasticity of the support, the user slides the operating handle within the sliding space coaxial with the L-shaped sliding window and the sub-shaft, thereby pulling the sub-shaft out of the bearing housing. When the sub-shaft is completely removed from the bushing, the user moves the operating handle along the sliding space perpendicular to the sub-shaft axis of the L-shaped sliding window, locking the operating handle and the sub-shaft, preventing it from retracting and extending, thus locking the sub-shaft. This unlocks the first and second hinge seats, facilitating the separation of the first and second boxes and transforming the suitcase into a sliding plate. When it is necessary to reassemble the first and second boxes into a suitcase, the user again moves the operating handle along the sliding space perpendicular to the sub-shaft axis of the L-shaped sliding window, unlocking the sub-shaft. Then, with the help of the elasticity of the support, the user slides the operating handle within the sliding space coaxial with the L-shaped sliding window, thereby inserting the sub-shaft into the bearing housing, ensuring the normal use of the suitcase. This operation method is simple and intuitive. Users do not need to use tools and can complete the operation manually, which greatly improves the convenience of use.

[0019] Furthermore, the upper side of the main body of the suitcase is equipped with an upper mounting base for mounting a detachable tabletop. This adds the function of placing items on the suitcase. In scenarios such as travel, office work, or leisure, users can place items such as laptops, books, documents, and tableware on the tabletop for convenient use and operation, meeting the usage requirements of different scenarios and improving the practicality and adaptability of the suitcase.

[0020] Furthermore, a lower mounting base is provided on the lower side of the suitcase body for mounting a sliding mechanism with detachable casters. The upper mounting base has the same structure as the lower mounting base and is positioned vertically opposite it. This eliminates the need to spend excessive time and effort distinguishing between the upper and lower mounting bases when installing or removing the detachable table and casters, reducing the learning curve and improving operational efficiency. Users can flexibly choose to install either the table or the casters, or both, according to their actual needs. This diverse combination of functions meets the usage needs of different users in different scenarios, improving the product's versatility and adaptability.

[0021] Compared with existing technologies, the beneficial effects of this utility model are as follows: By adopting a detachable hinge device, the functions of a suitcase and a skateboard can be converted. Users can use it as a regular suitcase for daily storage and carrying, and it can also transform into a skateboard when needed, meeting the needs of different scenarios and greatly improving the practicality and applicability of the product. The transformed skateboard structure has a flat sliding surface and surrounding sides. The surrounding sides can play a protective role in both suitcase and skateboard forms, effectively ensuring safety and stability. The flat sliding surface is suitable for gliding environments such as grass, sand, or snow, providing reliable gliding support. At the same time, the main body of the suitcase is in the shape of a flat rectangular prism. After transforming into a skateboard structure, its shape is adapted to the user's standing or riding posture, increasing the contact area between the user and the skateboard structure, significantly reducing the risk of falling, and bringing a more comfortable riding experience. In addition, the arc or sloping transition surface design between the sliding surface and the flat surface makes the edges rounded, reducing potential injuries and making gliding smoother and more natural; the arc surface design between the flat surface and the flat surface not only makes gliding transition naturally, reducing friction and jamming, but also has an elastic cushioning effect, reducing impact energy and reducing the possibility of injury.

[0022] The sliding mechanism on the lower side of the suitcase body allows users to easily slide the suitcase, reducing the burden of carrying and improving travel convenience. The hinge device is located on the side adjacent to the sliding mechanism, facilitating the placement or retrieval of items by opening the suitcase to the side, and also allowing users to quickly disassemble the hinge device to transform the suitcase while standing. The hinge device connects to the first and second hinge seats via a pivot, enabling the suitcase to rotate relative to each other and open. When transformed into a skateboard, the first and second hinge seats separate for detachment. The operating handle, in conjunction with the L-shaped sliding window, allows users to manually transform and reassemble the suitcase into a skateboard without tools, making operation simple and intuitive, enhancing ease of use. Parallel sliding ribs are incorporated into the sliding surface of the suitcase, reducing the actual contact area with the sliding surface, lowering friction, and making gliding smoother. Furthermore, the sliding ribs extend to the curved or inclined transition surface, strengthening the structural corners and sliding surface of the skateboard, effectively preventing deformation or damage, and ensuring the reliability and durability of the skateboard in various gliding environments.

[0023] The upper mounting bracket on the side of the suitcase body can be used to install a detachable table, providing convenience for placing items such as laptops, books, documents, and tableware in travel, office, or leisure scenarios, further enhancing the suitcase's practicality and adaptability. Meanwhile, the lower mounting bracket on the bottom side is used to install detachable casters. The upper and lower mounting brackets use the same structure and are positioned opposite each other, eliminating the need for users to distinguish between the table and casters when installing or removing them, reducing the learning curve and improving operational efficiency. Users can flexibly choose to install either a table or casters, or both, according to their actual needs, fully demonstrating the product's versatility and adaptability. Attached Figure Description

[0024] Figure 1 This is a structural example of the present invention. Figure 1 .

[0025] Figure 2 This is a structural diagram of the suitcase of this utility model.

[0026] Figure 3 This is a structural example of the present invention. Figure 2 .

[0027] Figure 4 This is an example diagram of the single-sided box body of this utility model.

[0028] Figure 5 This utility model provides a three-dimensional suitcase. Figure 1 .

[0029] Figure 6 This is an example diagram of the skateboard structure of this utility model.

[0030] Figure 7 This is a structural example of the present invention. Figure 3 .

[0031] Figure 8 This is an example diagram showing the disassembled hinge structure of this utility model.

[0032] Figure 9 This is a combined example diagram of the hinge structure of this utility model.

[0033] Figure 10 This is a front view of the hinge structure of this utility model.

[0034] Figure 11 This is a top view of the hinge structure of this utility model.

[0035] Figure 12 This utility model provides a three-dimensional suitcase. Figure 2 .

[0036] Figure 13 This is a perspective view of the suitcase with table of this utility model.

[0037] Figure 14 This is an example diagram of the detachable and sliding structure of this utility model.

[0038] Figure 15 This is an example diagram of the back panel structure of this utility model.

[0039] Figure 16 This is a structural example diagram of the traction rope and traction rope connecting device of this utility model.

[0040] Figure Descriptions: First box 100, second box 200, hinge device 300, luggage body 600, sliding plate structure 400, sliding surface 410, surrounding side 420, sliding mechanism 500, lower side 610, flat surface 620, arc transition surface 630, sliding rib 430, first hinge seat 310, second hinge seat 320, rotating shaft 330, first base 311, bearing seat 312, second base 321, bushing 322, sub-shaft 331, elastic support 332, L-shaped sliding window 323, operating handle 333, table 700, upper side 640, upper mounting base 641, lower mounting base 611. Detailed Implementation

[0041] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this invention. To better illustrate the following embodiments, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product; it is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0042] Example 1

[0043] like Figure 1 and Figure 2 As shown, this embodiment provides a suitcase that can transform into a skateboard, including a first case 100, a second case 200, and a hinge device 300 that are fastened to each other. The first case 100 and the second case 200 are connected by a hinge device 300 to form a suitcase body 600 that can be rotated open relative to each other. The hinge device 300 is a detachable structure. After the hinge device 300 is disassembled, the first case 100 and the second case 200 form independent components, which can be combined... Figure 3 and Figure 4 As shown, at least one of the first compartment 100 and the second compartment 200 forms a sliding plate structure 400, which has a flat sliding surface 410 and a surrounding side surface 420 around the sliding surface 410. The luggage body 600 also includes a sliding mechanism 500, which is disposed on the lower side surface 610 of the luggage body, and a hinge device 300 is disposed on the side of the luggage body adjacent to the sliding mechanism 500.

[0044] Further as Figure 3As shown, the suitcase body 600, supported by the sliding mechanism 500, has a length direction L, a height direction H, and a width direction D. The length direction L is larger than the height direction H, giving the overall structure a flat cuboid. The side where the hinge device 300 is located is a flat surface 620. The front / back sides of the suitcase body 600 form the sliding surface 410. An arc-shaped transition surface 630 is formed between the sliding surface 410 and the side opposite to the flat surface 620. Parallel sliding ribs 430 are provided on the sliding surface 410, and the sliding ribs 430 extend at least to the arc-shaped transition surface 630. Figure 5 and Figure 6 As shown, the side opposite the flat surface 620 is an arc-shaped surface.

[0045] like Figure 7 As shown, the hinge device 300 includes a first hinge seat 310 respectively disposed on the first housing 100 and a second hinge seat 320 on the second housing 200, and a rotating shaft 330. The first hinge seat 310 and the second hinge seat 320 are connected by the rotating shaft 330 to form a relatively rotatable whole. Figure 8 As shown, the connection between the first hinge seat 310 and the second hinge seat 320 is detachable by separating the pivot 330 from the first hinge seat 310 or the second hinge seat 320.

[0046] The first hinge seat 310 includes a first base 311 fixed to the first housing 100 and a pair of separate bearing seats 312 extending from the first base 311. The second hinge seat 320 includes a second base 321 fixed to the second housing 200 and a bushing 322 embedded between the two bearing seats 312. The rotating shaft 330 includes a pair of sub-shafts 331 sliding within the bushing 322 and an elastic support member 332. Figure 9 As shown, the elastic support 332 supports two sub-shafts 331 that extend from both ends of the bushing 322 and are inserted into the two bearing seats 312, so that the first hinge seat 310 and the second hinge seat 320 are connected by the rotating shaft 330 to form a relatively rotatable whole.

[0047] Further as Figure 9 A pair of symmetrical L-shaped sliding windows 323 are provided on the bushing 322 shown. An operating handle 333 is connected to the sub-shaft 331. The operating handle 333 passes through the L-shaped sliding window 323 to the outside of the bushing 322. The length of the sliding space of the L-shaped sliding window 323 and the sub-shaft 331 in the same direction is not less than the length of the sub-shaft 331 extending out of the bushing 322. The width of the sliding space of the L-shaped sliding window 323 perpendicular to the axial direction of the sub-shaft 331 is not less than the cross-sectional width of part of the operating handle 333.

[0048] like Figure 9 and Figure 10As shown, when the user uses it, pushing the operating handle 333 inward compresses the elastic support 332, which in turn drives the sub-shaft 331 to move in the coaxial direction through the L-shaped sliding window 323, and then... Figure 11 As shown, rotating the operating handle 333 allows it to enter and lock into a sliding space perpendicular to the axis of the sub-shaft 331, causing the sub-shaft 331 to extend out of the bushing 322, thereby disassembling the first hinge seat 310 and the second hinge seat 320, and separating the first housing 100 and the second housing 200 to form the slide plate structure 400.

[0049] like Figure 12 As shown, the upper side 640 of the suitcase body 600 is provided with four upper mounting seats 641, which are combined with Figure 13 As shown, the upper mounting base 641 is used to mount the detachable tabletop 700, and the tabletop 700 is provided with accessories for fixing in conjunction with the upper mounting base 641.

[0050] like Figure 1 and Figure 14 As shown, the lower side 610 of the suitcase body 600 is provided with four lower mounting seats 611. The lower mounting seats 611 are used to mount the sliding mechanism 500, and the sliding mechanism 500 is a detachable pulley. Figure 12 and Figure 13 As shown, the upper mounting base 641 and the lower mounting base 611 have the same structure and are positioned opposite each other. The mounting positions of the table 700 and the sliding mechanism 500 on the luggage body 600 can also be interchanged without being fixed.

[0051] like Figure 15 As shown, a backrest can be added to one end of the skateboard structure 400. After the backrest is disassembled from the luggage body 600, the upper mounting seat 641 and the lower mounting seat 611 at both ends of the skateboard structure 400 are fixed together. When the user sits in the skateboard structure 400 to skate, or places items in the skateboard structure 400 for transport, the backrest can provide support and prevent the skateboard structure 400 from tipping backward due to instability during skating.

[0052] like Figure 16 As shown, a tow rope can be added to one end of the skateboard structure 400. After the tow rope is detached from the luggage body 600 via a tow rope connecting device, the upper mounting base 641 and lower mounting base 611 at both ends of the skateboard structure 400 are fixed together. The user can move the skateboard structure 400 by pulling the tow rope. Further as... Figure 16 As shown, the first compartment 100 and the second compartment 200 of the suitcase body 600 can rotate 180° relative to each other and fully unfold and flatten without disassembling the hinge device 300, forming two skateboard structures 400 that are fixed together for use.

[0053] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the technical solution of this utility model, and are not intended to limit the specific implementation of this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the claims of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A suitcase that can transform into a skateboard, comprising a first case body (100) and a second case body (200) that are locked together. The first compartment (100) and the second compartment (200) are connected by a hinge device (300) to form a suitcase body (600) that can be opened by relative rotation. Its features are, The hinge device (300) is a detachable structure. After disassembling the hinge device (300), The first housing (100) and the second housing (200) form independent components, and at least one of the first housing (100) and the second housing (200) forms a sliding plate structure (400), the sliding plate structure (400) having at least a flat sliding surface (410) and a surrounding side surface (420) surrounding the sliding surface (410).

2. The suitcase that can transform into a skateboard according to claim 1, characterized in that, The suitcase body (600) also includes a sliding mechanism (500). The sliding mechanism (500) is located on the lower side (610) of the suitcase body (600). The hinge device (300) is disposed on the side of the suitcase body (600) adjacent to the sliding mechanism (500).

3. The suitcase that can transform into a skateboard according to claim 2, characterized in that, The suitcase body (600), in a placement state supported by a sliding mechanism (500), has a length direction L, a height direction H, and a width direction D. The length dimension is greater than the height dimension, making the whole structure a flat cuboid. The side of the hinge device (300) is a flat surface (620). The front / back sides of the suitcase body (600) form the sliding surface (410). An arc-shaped transition surface (630) or an inclined transition surface is formed between the sliding surface (410) and the side opposite to the flat surface (620).

4. The suitcase that can transform into a skateboard according to claim 2, characterized in that, The side opposite to the flat surface (620) is an arc-shaped surface.

5. The suitcase that can transform into a skateboard according to claim 3, characterized in that, Parallel sliding ribs (430) are provided on the sliding surface (410). The sliding rib (430) extends at least to the arcuate transition surface (630) or the inclined transition surface.

6. The suitcase that can transform into a skateboard according to any one of claims 1-5, characterized in that, The hinge device (300) includes a first hinge seat (310) and a second hinge seat (320) respectively disposed on the first housing (100) and the second housing (200), and a rotating shaft (330). The first hinge seat (310) and the second hinge seat (320) are connected by a rotating shaft (330) to form a rotatable whole. The connection between the first hinge seat (310) and the second hinge seat (320) is detachable by separating the rotating shaft (330) from the first hinge seat (310) or the second hinge seat (320).

7. The suitcase that can transform into a skateboard according to claim 6, characterized in that, The first hinge seat (310) includes a first base (311) fixed to the first housing (100) and a pair of separate bearing seats (312) extending from the first base (311). The second hinge seat (320) includes a second base (321) fixed to the second housing (200) and a bushing (322) embedded between two bearing seats (312). The rotating shaft (330) includes a pair of sub-shafts (331) that slide within a bushing (322) and an elastic support (332). The elastic support (332) supports two sub-shafts (331) that extend from both ends of the bushing (322) and are inserted into two bearing seats (312), so that the first hinge seat (310) and the second hinge seat (320) are connected by the rotating shaft (330) to form a relatively rotatable whole.

8. The suitcase that can transform into a skateboard according to claim 7, characterized in that, A pair of symmetrical L-shaped sliding windows (323) are provided on the bushing (322). An operating handle (333) is connected to the sub-shaft (331). The operating handle (333) passes through the L-shaped sliding window (323) to the outside of the bushing (322). The length of the sliding space of the L-shaped sliding window (323) and the sub-shaft (331) in the coaxial direction is not less than the length of the sub-shaft (331) extending out of the bushing (322). The width of the sliding space of the L-shaped sliding window (323) perpendicular to the axis of the sub-axis (331) is not less than the cross-sectional width of part of the operating handle (333).

9. The suitcase that can transform into a skateboard according to any one of claims 2-5, characterized in that, It also includes a detachable tabletop (700). The upper side (640) of the main body (600) of the suitcase is provided with an upper mounting base (641) for mounting a table (700).

10. The suitcase that can transform into a skateboard according to claim 9, characterized in that, The sliding mechanism (500) is a detachable pulley. The lower side (610) of the main body (600) of the suitcase is provided with a lower mounting base (611) for mounting casters. The upper mounting base (641) and the lower mounting base (611) have the same structure and are positioned opposite each other.

Images