A deformable luggage case

Abstract

The utility model relates to the field of luggage, especially a deformable luggage. It is constituted by the first box and the second box of relatively buckling, openable first box and second box relatively rotatable main part, and the upper and lower mounting seat of opposite position are equipped respectively on the upper and lower side surface of main part. First box and second box can be dismantled into independent parts, and at least one of them can form a slide structure, and the upper and lower mounting seat is divided on both sides of the slide structure. In addition, it also includes the directional pulley of detachable connection with the upper and lower mounting seat. The design makes the luggage have the traditional article carrying function, and can realize the function conversion of the luggage and the slide through deformation, provides the user with the sliding in special terrain, and expands the use scene. At the same time, the design of detachable connection of directional pulley avoids the scratch of the shell when the slide slides, and can also be assembled or disassembled quickly as needed, and gives consideration to the traditional and deformation functions, improves the use flexibility and safety.

Description

Technical Field

[0001] This utility model relates to the field of luggage, and more particularly to a deformable luggage. 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 deformable suitcase.

[0007] The technical solution adopted by this utility model is to provide a deformable suitcase, 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 to form a suitcase body that can be opened by relative rotation. The upper side of the suitcase body is provided with an upper mounting seat, and the lower side is provided with a lower mounting seat. The upper mounting seat and the lower mounting seat are positioned vertically opposite each other. The first box body and the second box body can be detached to form independent components. At least one of the first box body and the second box body forms a sliding plate structure. The upper mounting seat and the lower mounting seat are respectively located on both sides of the sliding plate structure. The suitcase also includes a directional pulley, which is detachably connected to the upper mounting seat and the lower mounting seat located on both sides of the sliding plate structure. pass

[0008] The suitcase's main body, consisting of a first and second compartment that can rotate and open relative to each other, forms a traditional suitcase for carrying items. Simultaneously, by designing the first and second compartments as detachable, independent components, and allowing at least one compartment to form a skateboard structure, the suitcase can be transformed into a skateboard for gliding, expanding its usability to special terrains such as grass, beaches, and snow. Furthermore, the design of detachable casters connected to the upper and lower mounting bases prevents scratches on the outer shell from dry ground or other rough terrain while gliding. The casters can also be quickly assembled or disassembled as needed, combining the traditional function of a suitcase with the transformative function of a skateboard, enhancing both flexibility and safety.

[0009] Furthermore, the main body of the suitcase also includes omnidirectional casters located on the lower side of the main body of the suitcase. The omnidirectional casters provide auxiliary movement function. When the suitcase is used as regular luggage, the user can easily and smoothly slide the main body of the suitcase using the omnidirectional casters, reducing the user's carrying burden and improving travel convenience. At the same time, the suitcase can be opened from the side to place or retrieve items, improving the convenience of taking and putting away items.

[0010] Preferably, the suitcase includes four upper mounting seats, four lower mounting seats, and four omnidirectional casters. The four upper mounting seats are located on the upper side, and the four lower mounting seats are located on the lower side, forming a symmetrical structure with one upper mounting seat corresponding to the lower mounting seats. The four omnidirectional casters are detachably connected to the four lower mounting seats, evenly distributing weight, reducing local pressure, and preventing caster wear or suitcase tilting caused by concentrated weight. This makes dragging more stable, especially when carrying heavy items. Additionally, it includes two directional casters. When the first and second suitcases are disassembled into independent components to form a skateboard structure, the two directional casters are detachably connected to one symmetrical upper mounting seat and one symmetrical lower mounting seat on the skateboard structure, respectively. This dual-caster layout balances the force on both sides of the skateboard, improving stability during gliding and preventing center of gravity shift or loss of control due to a single-caster design. Users can quickly switch between suitcase and skateboard modes by simply removing / installing the casters.

[0011] Preferably, the suitcase includes four upper mounting bases, four lower mounting bases, and four omnidirectional casters. The upper and lower mounting bases are distributed in pairs on the first and second compartments, forming a symmetrical structure. The four omnidirectional casters are detachably connected to the four lower mounting bases, evenly distributing weight, reducing localized pressure, and preventing caster wear or compartment tilting caused by concentrated weight. This results in smoother dragging, especially when carrying heavy items. Additionally, four directional casters are included. When the first and second compartments are disassembled into independent components to form a skateboard structure, the four directional casters are installed in pairs on the upper and lower mounting bases of the skateboard structure, forming a four-support point layout. This significantly distributes the load and improves the skateboard's load-bearing capacity while further limiting accidental steering and reducing the risk of loss of control. Users can quickly switch between suitcase and skateboard modes by simply removing / installing the casters.

[0012] Preferably, the first and second compartments of the disassembled suitcase body each form a skateboard structure. These two skateboard structures can be joined together to form a large skateboard, providing a longer gliding surface and a larger load-bearing area, suitable for two people to skate together or to carry more items, thus expanding the skateboard's usage scenarios. This large skateboard includes six directional casters, each detachably connected to two corresponding upper and two corresponding lower mounting seats on one skateboard structure, and detachably connected to one corresponding upper and one corresponding lower mounting seat on another skateboard structure, forming a multi-support point layout that provides better load-bearing capacity for the large skateboard.

[0013] Furthermore, the number of directional pulleys on this large skateboard can be increased to eight, which are detachably connected to four upper mounting seats and four lower mounting seats corresponding to each other on a skateboard structure, forming a four-support point layout for each skateboard structure. After the two skateboard structures are spliced ​​together, a total of eight directional pulleys are evenly distributed, further improving the overall load-bearing capacity.

[0014] Furthermore, the first and second compartments are connected by a hinge to form a suitcase body that can be opened and rotated relative to each other. While achieving the traditional opening and closing of a suitcase, the first and second compartments can be quickly joined together as a single sliding board after a simple flipping motion via the hinge, without the need for complete disassembly or complex assembly steps. This ensures precise alignment of the seams between the two sliding board structures after flipping, improving gliding stability. Secondly, after flipping and joining, the hinge acts as a structural fulcrum, sharing the user's weight and the pressure of the items with the pulleys, reducing localized stress concentration and preventing deformation of the suitcase due to uneven force during gliding.

[0015] Furthermore, the hinge mechanism is detachable, requiring no special tools and allowing for quick separation or connection of the suitcases through simple operation. After disassembling the hinge mechanism, the first and second suitcases form a completely independent sliding plate structure, quickly enabling the conversion between a suitcase and a sliding plate to meet the user's needs in different scenarios.

[0016] Furthermore, the directional pulley includes a detachable axle and a wheel. The wheel is mounted on one end of the detachable axle and rotates. The other end of the detachable axle has a threaded section, which connects and secures it to the upper and lower mounting bases. An assist lever is located on the detachable axle, between the threaded section and the wheel. This lever increases the contact area between the user's hand and the axle, reducing the torque required to rotate the axle through leverage. The user can easily and quickly install or remove the directional pulley by rotating the lever, without needing additional tools or parts, significantly simplifying the mode switching process.

[0017] Furthermore, the wheel radius R needs to be greater than the distance r from the detachable pivot point to the lower side of the skateboard structure, so that the wheel edge protrudes from the bottom of the skateboard, increasing the ground clearance of the skateboard. This not only prevents the bottom of the skateboard from rubbing against the ground, but also makes it easier to cross smaller obstacles while gliding, reducing vibration and the risk of getting stuck, improving maneuverability, and reducing gliding resistance.

[0018] Furthermore, a traction rope can be added, with loops at both ends. These loops directly engage with the detachable shaft of the directional pulley. The screw thread on the shaft is rotated using a lever to quickly secure or remove the component, eliminating the need for additional drilling or modification of the skateboard structure. Users can remotely control the skateboard via the traction rope. For example, on sloping terrain, it can serve as an auxiliary power source for uphill traction, or as a braking tool for deceleration when going downhill, enhancing controllability.

[0019] Furthermore, a backrest panel can be added, with through holes at both ends. The backrest panel is connected to the detachable pivot through the through holes to achieve a fixed connection with the skateboard structure, providing back or waist support when the user is riding.

[0020] Compared with existing technologies, the advantages of this invention are as follows: by designing the first and second boxes as detachable independent components, and making at least one box form a skateboard structure, a rapid functional conversion between a traditional suitcase and a skateboard is achieved, effectively solving the problem of the single function of traditional suitcases. Users can freely switch between the traditional mode of transporting goods and the gliding mode, which is especially suitable for special terrains such as grass, sand, and snow, significantly expanding the adaptability of travel scenarios and meeting the needs of multiple usage scenarios.

[0021] The detachable connection design of the directional casters to the upper and lower mounting bases prevents the shell from being scratched by rough terrain when in skateboard mode. The four evenly distributed omnidirectional casters distribute weight and reduce local pressure in luggage mode, making dragging heavier loads smoother. In skateboard mode, you can choose from symmetrical double casters, four casters with four support points, or a large skateboard layout with six or eight casters after splicing, which significantly improves gliding stability and load-bearing capacity, preventing center of gravity shift or loss of control. At the same time, the design of the wheel radius being larger than the distance from the pivot point to the underside of the skateboard increases the ground clearance, reduces bottom friction, makes it easy to cross small obstacles, and reduces gliding resistance.

[0022] In terms of ease of operation and expanded functionality, the hinge mechanism supports flipping or disassembly, allowing for quick assembly of the box into a complete skateboard without complicated setup. The detachable pivot, combined with the power assist lever, enables quick installation / removal of the casters without tools, simplifying the mode switching process. Furthermore, the addition of a traction rope and backrest further enhances gliding controllability and riding comfort, improving overall flexibility and user experience. Attached Figure Description

[0023] Figure 1 This is a structural example of the present invention. Figure 1 .

[0024] Figure 2 This is a structural diagram of the suitcase of this utility model.

[0025] Figure 3 This is a structural example of the present invention. Figure 2 .

[0026] Figure 4 This is an example diagram of the single-sided box body of this utility model.

[0027] Figure 5 This utility model provides a three-dimensional suitcase. Figure 1 .

[0028] Figure 6 This is an example diagram of the skateboard structure of this utility model.

[0029] Figure 7 This is a structural example of the present invention. Figure 3 .

[0030] Figure 8 This is an example diagram showing the hinge structure of this utility model disassembled.

[0031] Figure 9 This is a combined example diagram of the hinge structure of this utility model.

[0032] Figure 10 This is a front view of the hinge structure of this utility model.

[0033] Figure 11 This is a top view of the hinge structure of this utility model.

[0034] Figure 12 This utility model provides a three-dimensional suitcase. Figure 2 .

[0035] Figure 13 This is a perspective view of the suitcase with table of this utility model.

[0036] Figure 14 This is an example diagram of the detachable and sliding structure of this utility model.

[0037] Figure 15 This is an example diagram of the back panel structure of this utility model.

[0038] Figure 16 This is a structural example diagram of the traction rope and traction rope connecting device of this utility model.

[0039] Figure 17 This is a structural example diagram of Embodiment 2 of the present invention.

[0040] Figure 18 Example of the directional pulley structure of this utility model Figure 1

[0041] Figure 19 Example of the directional pulley structure of this utility model Figure 2

[0042] Figure 20 This is a structural example diagram of Embodiment 3 of the present invention.

[0043] Figure 21 This is a structural example diagram of Embodiment 4 of the present invention.

[0044] Figure 22 This is a structural example of embodiment 5 of the present invention. Figure 1

[0045] Figure 23 This is a structural example of embodiment 5 of the present invention. Figure 2

[0046] Figure Descriptions: First box 100, second box 200, hinge device 300, luggage body 600, skateboard structure 400, sliding surface 410, surrounding side 420, universal pulley 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 seat 641, lower mounting seat 611, directional pulley 510, detachable rotating shaft 511, wheel 512, threaded section 513, power assist paddle 514, traction rope 800, backrest 900, collar 810, through hole 910. Detailed Implementation

[0047] 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. Example 1

[0048] like Figure 1 and Figure 2 As shown, this embodiment provides a deformable suitcase, including a first suitcase body 100, a second suitcase body 200, and a hinge device 300 that are fastened to each other. The first suitcase body 100 and the second suitcase body 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 suitcase body 100 and the second suitcase body 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, the sliding plate structure 400 having a flat sliding surface 410 and a surrounding side surface 420 surrounding the sliding surface 410. The luggage body 600 also includes universal casters 500, which are 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 universal casters 500.

[0049] Further as Figure 3As shown, the suitcase body 600, supported by omnidirectional casters 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 with 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 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.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] 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.

[0055] like Figure 1 and Figure 14 As shown, the lower side 610 of the luggage body 600 is provided with four lower mounting seats 611. The lower mounting seats 611 are used to mount omnidirectional casters 500, and the omnidirectional casters 500 are detachable casters. 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 universal casters 500 on the luggage body 600 can also be interchanged without being fixed.

[0056] like Figure 15 As shown, a backrest 900 can be added to one end of the skateboard structure 400. After the luggage body 600 is disassembled, the backrest 900 is fixed to the upper mounting seat 641 and lower mounting seat 611 at both ends of the skateboard structure 400. When the user sits in the skateboard structure 400 to skate, or places items in the skateboard structure 400 for transport, the backrest 900 can provide support and prevent the skateboard structure 400 from tipping backward due to instability during skating.

[0057] like Figure 16 As shown, a tow rope 800 can be added to one end of the skateboard structure 400. After the tow rope 800 is detached from the luggage body 600 via a tow rope 800 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 800. Further... 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. Example 2

[0058] like Figure 17 and Figure 18 As shown, this embodiment provides a deformable suitcase similar to that of Embodiment 1, the difference being that it includes two directional casters 510, combined with... Figure 19 As shown, the directional pulley 510 includes a detachable shaft 511 and a wheel 512. The wheel 512 is mounted on one end of the detachable shaft 511 and rotates. The other end of the detachable shaft 511 is provided with a threaded section 513 that connects to the upper mounting base 641 and the lower mounting base 611. An assist lever 514 is provided on the detachable shaft 511 between the threaded section 513 and the wheel 512. The two directional pulleys 510 are detachably connected to one upper mounting base 641 and one lower mounting base 611 on the slide plate structure 400, respectively. Example 3

[0059] like Figure 20 As shown, this embodiment provides a deformable suitcase similar to that of embodiment 2, the difference being that it includes four directional pulleys 510, which are detachably connected to two upper mounting seats 641 and two lower mounting seats 611 on the skateboard structure 400 respectively. Example 4

[0060] like Figure 21 As shown, this embodiment provides a deformable suitcase similar to that of embodiment 2, the difference being that two skateboard structures 400 are spliced ​​together to form a whole, including six directional pulleys 510. The directional pulleys 510 are detachably connected to two corresponding upper mounting seats 641 and two corresponding lower mounting seats 611 on one skateboard structure 400, and are detachably connected to one corresponding upper mounting seat 641 and one corresponding lower mounting seat 611 on the other skateboard structure 400. Example 5

[0061] like Figure 22 As shown, this embodiment provides a deformable suitcase similar to Embodiment 2, the difference being that two sliding plate structures 400 are spliced ​​together to form a whole, including eight directional pulleys 510. The directional pulleys 510 are detachably connected to four upper mounting seats 641 and four lower mounting seats 611 corresponding to each other on one of the sliding plate structures 400. Further combining... Figure 22 As shown, the traction rope 800 has collars 810 at both ends that are sleeved on the detachable rotating shaft 511, and the backrest plate 900 has through holes 910 at both ends that are sleeved on the detachable rotating shaft 511.

[0062] 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 deformable suitcase, comprising a first case body (100) and a second case body (200) that are fastened together, the first case body (100) and the second case body (200) being connected to form a suitcase body (600) that can be rotated open relative to each other, the suitcase body (600) having an upper mounting seat (641) on its upper side (640) and a lower mounting seat (611) on its lower side (610). The upper mounting base (641) and the lower mounting base (611) are vertically opposite each other. Its features are, The first housing (100) and the second housing (200) are detachable to form independent components, and at least one of the first housing (100) and the second housing (200) forms a sliding plate structure (400). The upper mounting base (641) and the lower mounting base (611) are located on both sides of the sliding plate structure (400), respectively. It also includes a directional pulley (510), The directional pulley (510) is detachably connected to the upper mounting base (641) and lower mounting base (611) located on both sides of the slide plate structure (400).

2. The deformable suitcase according to claim 1, characterized in that, The main body of the suitcase (600) also includes omnidirectional casters (500). The universal pulley (500) is detachably connected to the lower mounting base (611).

3. The deformable suitcase according to claim 2, characterized in that, It includes four upper mounting bases (641) and four lower mounting bases (611), which are respectively distributed on the upper side (640) and the lower side (610), and correspond one to one; Includes four omnidirectional casters (500), which are detachably connected to four lower mounting bases (611); It includes two directional pulleys (510), which are detachably connected to an upper mounting base (641) and a lower mounting base (611) on the skateboard structure (400), respectively.

4. The deformable suitcase according to claim 2, characterized in that, It includes four upper mounting bases (641) and four lower mounting bases (611), which are distributed in pairs on the first housing (100) and the second housing (200) and correspond one to one; Includes four omnidirectional casters (500), which are detachably connected to four lower mounting bases (611); It includes at least four directional pulleys (510), which are detachably connected to two upper mounting seats (641) and two lower mounting seats (611) on the skateboard structure (400), respectively.

5. The deformable suitcase according to claim 3, characterized in that, The first box (100) and the second box (200) each form a sliding plate structure (400), and the two sliding plate structures (400) are spliced ​​together to form a whole; It includes six directional pulleys (510), which are detachably connected to two upper mounting seats (641) and two lower mounting seats (611) on one skateboard structure (400), and detachably connected to one upper mounting seat (641) and one lower mounting seat (611) on another skateboard structure (400).

6. The deformable suitcase according to claim 3, characterized in that, The first box (100) and the second box (200) each form a sliding plate structure (400), and the two sliding plate structures (400) are spliced ​​together to form a whole; It includes eight directional pulleys (510), which are detachably connected to four upper mounting seats (641) and four lower mounting seats (611) on a skateboard structure (400).

7. The deformable suitcase according to any one of claims 5 or 6, characterized in that, 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. After the first box (100) is flipped relative to the second box (200) by a hinge device (300), it forms two slide structures (400) that are spliced ​​together as a whole.

8. The deformable suitcase according to claim 7, characterized in that, 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.

9. The deformable suitcase according to any one of claims 1-6, characterized in that, The directional pulley (510) includes a detachable pivot (511) and a wheel (512). The wheel (512) is mounted on one end of a detachable pivot (511) and rotates. The other end of the detachable shaft (511) is provided with a threaded section (513) that connects to the upper mounting base (641) and the lower mounting base (611). An assist lever (514) is provided on the detachable shaft (511) between the threaded section (513) and the wheel (512). The radius R of the wheel (512) is greater than the distance r from the axis of the detachable pivot (511) to the lower side of the skateboard structure (400).

10. The deformable suitcase according to claim 9, characterized in that, It also includes a traction rope (800) and / or a backrest (900). The traction rope (800) has loops (810) at both ends that are sleeved on a detachable rotating shaft (511). The backrest panel (900) has through holes (910) at both ends that are fitted onto the detachable pivot (511).

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