Multifunctional carrying vehicle

Abstract

A multifunctional carrying vehicle, comprising a chassis (1) and a framing assembly (2) arranged on the chassis (1). The carrying vehicle has a first usage state and a second usage state. When the carrying vehicle is in the first usage state, the framing assembly (2) is located above the chassis (1) and encloses an accommodation space with the chassis (1); and when the carrying vehicle is in the second usage state, at least part of the framing assembly (2) is moved to be arranged side by side with the chassis (1) and forms, together with the chassis (1), a carrying structure for supporting. When the multifunctional carrying vehicle is in the first usage state, the carrying vehicle can travel while carrying a child and carrying cargo in the accommodation space, which makes it easier for an adult to go outside, and the carrying vehicle has a small structure and volume, and is thus easy to use. When the carrying vehicle is in the second usage state, the carrying vehicle is used in a static state, and the carrying space of the carrying vehicle is increased compared with that in the first usage state, so that the carrying vehicle can be used as a bed, etc. The carrying vehicle has multiple usage functions, which can improve the utilization of the carrying vehicle so as to avoid waste.

Description

A multifunctional vehicle Technical Field

[0001] The present invention particularly relates to a multifunctional vehicle. Background Art

[0002] Trailers and similar vehicles are commonly used to carry children and load cargo when traveling. In the prior art, trailers are generally used solely as trailers, limiting their functionality. For example, Chinese Patent ZL2007200466261 discloses a child trailer comprising a trailer frame, side wheels disposed below and on either side of the trailer frame, a tow bar disposed at the front of the trailer frame, and a shielding member disposed on the trailer frame. The trailer frame comprises a base frame, side brackets disposed above and on either side of the base frame, and a crossbar connecting the side brackets. A seat is disposed on the base frame. Summary of the Invention

[0003] The purpose of the present invention is to provide a multifunctional vehicle with multiple functions in order to address the deficiencies in the prior art.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] A multifunctional carrier comprises a base frame and a frame assembly arranged on the base frame; the carrier has a first usage state and a second usage state. When the carrier is in the first usage state, the frame assembly is located above the base frame and encloses a storage space with the base frame; when the carrier is in the second usage state, at least part of the frame assembly moves to be arranged in parallel with the base frame and together with the base frame forms a bearing structure for support.

[0006] In some embodiments, the frame assembly is rotatably mounted on the end of the base frame. The frame assembly can rotate as a whole relative to the base frame, and after the rotation, the side of the frame assembly rotates to a position parallel to the base frame.

[0007] In some embodiments, the frame assembly is rotatably mounted on the rear end of the base frame and has a rear frame. In the second usage state, the rear frame is rotated to connect with the plane where the base frame is located to serve as an outward extension of the base frame.

[0008] In some embodiments, the multifunctional vehicle further includes a support structure disposed on the frame assembly, and in the second usage state, the support structure is supported between the ground and the frame assembly.

[0009] In some embodiments, the support structure is disposed near a top of the enclosure assembly.

[0010] In some embodiments, in the first usage state, at least a portion of the support structure extends to the rear side of the frame assembly to form a handle for pushing the multi-functional carrier.

[0011] In some embodiments, the support structure is rotatably mounted on the frame assembly to adjust the tilt angle of the rear frame relative to the base frame in the second usage state, and to adjust the position of the handle in the first usage state.

[0012] In some embodiments, the vehicle further comprises a seat assembly disposed within the accommodating space of the frame assembly when the vehicle is in the first use state;

[0013] The seat assembly includes a first seat assembly, which includes a first backrest arranged on the frame assembly. When the carrier is in the second usage state, the first backrest extends along the plane where the base frame is located and is sequentially connected to the base frame.

[0014] In some embodiments, the frame assembly includes a rear frame having a frame structure, the frame structure includes a pair of vertical pole assemblies and a cross bar connected between the pair of vertical pole assemblies, the first backrest includes a flexible connector arranged between the pair of vertical pole assemblies, and the flexible connector is a cloth cover.

[0015] In some embodiments, the seat assembly further comprises a second seat assembly, the second seat assembly being rotatable and detachably disposed on the base frame; or the second seat assembly being detachably disposed on the base frame;

[0016] In some embodiments, the second seat assembly includes a second seat and a second backrest having a lower portion pivotally connected to the second seat, the second seat being pivotally and detachably or removably connected to the base frame;

[0017] When the carrier is in a first usage state, the first seat assembly and the second seat assembly are oriented in the same or opposite directions.

[0018] In some embodiments, the vehicle further includes a front fence bar assembly that can be rotatably disposed on the frame assembly. When the vehicle is in a first usage state, the front fence bar assembly can be rotated to a closed position close to the frame assembly. In the closed position, the front fence bar assembly blocks the front portion of the accommodating space of the vehicle. The front fence bar assembly can be rotated to an open position. In the open position, the front fence bar assembly rotates in a direction to open the accommodating space.

[0019] In some embodiments, the front fence rod assembly can also be slidably arranged relative to the frame assembly. When the vehicle is in a first usage state, the front fence rod assembly cannot slide relative to the frame assembly. When the vehicle is in a second usage state and the frame assembly is rotated as a whole to the rear of the base frame, the front fence rod assembly slides forward relative to the frame assembly and extends to the outside of the frame assembly, blocking the top of the base frame.

[0020] In some embodiments, the vehicle further includes a front fence rod assembly that can be slidably disposed on the frame assembly. When the vehicle is in a first usage state, the front fence rod assembly can slide relative to the frame assembly to open or close the front of the vehicle's accommodating space. When the vehicle is in a second usage state and the frame assembly is rotated as a whole to the rear of the base frame, the front fence rod assembly slides forward relative to the frame assembly and extends to the outside of the frame assembly, blocking the top of the base frame.

[0021] The camshaft is connected to the front of the chassis by a hinged connection between the top and bottom ends of the chassis and the other ends of the hinged connection between the top and bottom ends of the chassis and the other ends of the hinged connection between the chassis and the one end of the chassis.

[0022] In some embodiments, the frame assembly includes a front bracket assembly, an upper upright assembly and a lower upright assembly, one end of the front bracket assembly is rotatably connected to the front of the base frame, and the connection between the front bracket assembly and the front of the base frame is detachable, the other end of the front bracket assembly is rotatably connected to the upper end of the upper upright assembly, the lower end of the upper upright assembly is rotatably connected to the upper end of the lower upright assembly, and the lower end of the lower upright assembly is rotatably connected to the rear of the base frame; when the carrier is in a first usage state, one end of the front bracket assembly is in a connected state with the front of the base frame; when the carrier is in a second usage state, the connection between the front bracket assembly and the front of the base frame is disengaged, and the frame assembly rotates as a whole to the rear of the base frame.

[0023] In some embodiments, the vehicle further comprises a front wheel assembly disposed at a bottom front portion of the chassis and a rear wheel assembly disposed at a bottom rear portion of the chassis.

[0024] The present invention also provides a multifunctional vehicle, which includes a base frame, a frame assembly with a accommodating space arranged on the base frame, and a third seat assembly. The third seat assembly includes a third seat connected to the rear portion of the base frame and a third backrest rotatably connected to the third seat. The vehicle has a first usage state and a second usage state. When the vehicle is in the first usage state, the third backrest extends in the up and down direction and is located in the accommodating space of the frame assembly; when the vehicle is in the second usage state, the third backrest rotates relative to the seat to be located outside the accommodating space of the frame assembly and is located behind the base frame.

[0025] Due to the application of the above-mentioned technical solution, the present invention has the following advantages over the prior art: When the multifunctional carrier of the present invention is in a first use state, the carrier's storage space can carry children and load cargo, making it easy and labor-saving for adults to go out. Moreover, the carrier's structural volume is relatively small, making it convenient to use. When the carrier is in a second use state, the carrier is used statically. Compared with the first use state, the carrier's carrying space is increased, and it can be used as other items such as a bed. This allows the carrier to have multiple uses, greatly improving its utilization rate and avoiding waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] FIG1 is a perspective schematic diagram of the multifunctional vehicle of Example 1 in a first usage state (a second seat assembly and a first seat assembly are disposed in the surrounding frame assembly, and the second seat assembly is rotatably and detachably connected to the base frame);

[0027] Figure 2 is a side view of the state corresponding to Figure 1;

[0028] FIG3 is a perspective schematic diagram of the multifunctional vehicle of Example 1 in a first usage state (the second seat assembly and the first seat assembly are both provided in the surrounding frame assembly, and the second seat assembly is only detachably connected to the base frame);

[0029] Figure 4 is a side view schematic diagram corresponding to Figure 3;

[0030] FIG5 is a perspective schematic diagram of the multifunctional vehicle of Example 1 in a first usage state (two second seat assemblies are simultaneously provided in the surrounding frame assembly, and both second seat assemblies are rotatably and detachably connected to the base frame);

[0031] Figure 6 is a side view corresponding to Figure 5;

[0032] FIG7 is a perspective schematic diagram of the multifunctional vehicle of Example 1 in a first usage state (two second seat assemblies are provided in the surrounding frame assembly, one second seat assembly is rotatably and detachably connected to the base frame and the first seat assembly, and the other second seat assembly is only detachably connected to the base frame);

[0033] Figure 8 is a side view schematic diagram corresponding to Figure 7;

[0034] FIG9 is a perspective schematic diagram of the multifunctional vehicle of Example 1 in a first usage state (two second seat assemblies are provided in the surrounding frame assembly, one second seat assembly is rotatably and detachably connected to the base frame, and the other second seat assembly is only detachably connected to the base frame);

[0035] Figure 10 is a side view schematic diagram corresponding to the state of Figure 9;

[0036] FIG11 is a perspective schematic diagram of the multifunctional vehicle of Example 1 in a first usage state (two second seat assemblies are provided in the surrounding frame assembly, and both second seat assemblies are only detachably connected to the base frame);

[0037] Figure 12 is a side view of the state corresponding to Figure 11;

[0038] FIG13 is a side view of the multifunctional vehicle of Example 1 in a first usage state (only one second seat assembly is provided in the enclosure assembly, and the second seat assembly is provided in a forward direction);

[0039] FIG14 is a side view of the multifunctional vehicle of Example 1 in a first use state (only one second seat assembly is provided in the frame assembly, and the second seat assembly is provided in reverse);

[0040] FIG15 is a side view of the multifunctional vehicle of Example 1 in a first use state (two second seat assemblies are provided in the frame assembly, and both second seat assemblies are arranged in a forward direction);

[0041] FIG16 is a side view of the multifunctional vehicle of Example 1 in a first use state (two second seat assemblies are provided in the frame assembly, one second seat assembly is provided in a forward direction, and the other second seat assembly is provided in a reverse direction);

[0042] FIG17 is a side view of the multifunctional vehicle of Example 1 in a first use state (two second seat assemblies are provided in the frame assembly, one second seat assembly is provided in a forward direction, and the other second seat assembly is provided in a reverse direction);

[0043] FIG18 is a side view of the multifunctional vehicle of Example 1 in a first use state (two second seat assemblies are provided in the frame assembly, and the two second seat assemblies are arranged in opposite directions);

[0044] FIG19 is a perspective schematic diagram of the multifunctional vehicle of Example 1 in a first use state (the front wall bar assembly is away from the front bracket assembly so that the front portion of the accommodating space is open);

[0045] Figure 20 is a side view schematic diagram corresponding to Figure 19;

[0046] FIG21 is a perspective schematic diagram of the multifunctional vehicle of Example 1 in a first use state (with the front of the chassis connected to the tow bar);

[0047] Figure 22 is a side view schematic diagram corresponding to Figure 21;

[0048] Figure 23 is a perspective schematic diagram of the multifunctional carrier of Example 1 in a second usage state;

[0049] Figure 24 is a side view of the multifunctional vehicle of Example 1 in a second usage state;

[0050] FIG25 is a perspective schematic diagram of the multifunctional carrier of Example 1 when transitioning from the first use state to the second use state (after the frame assembly rotates backward relative to the base frame);

[0051] Figure 26 is a side view schematic diagram corresponding to Figure 25;

[0052] FIG27 is a perspective schematic diagram of the multifunctional vehicle of Example 1 when transitioning from a first use state to a second use state (after the second seat assembly is removed from the chassis);

[0053] Figure 28 is a side view schematic diagram corresponding to Figure 27;

[0054] FIG29 is a perspective schematic diagram of the multifunctional carrier of Example 1 during folding;

[0055] Figure 30 is a side view of the multifunctional carrier of Example 1 during folding;

[0056] Figure 31 is a perspective schematic diagram of the multifunctional carrier of Example 1 in a folded state;

[0057] Figure 32 is a side view of the multifunctional carrier of Example 1 in a folded state;

[0058] Figure 33 is an exploded schematic diagram of the multifunctional carrier of Example 1;

[0059] Figure 34 is a perspective schematic diagram of the multifunctional vehicle of Example 5 in a second usage state;

[0060] Figure 35 is a side view schematic diagram of the multifunctional vehicle of Example 5 in the second usage state.

[0061] Among them: 1. Base frame; 2. Frame assembly; 21. Lower enclosure rod assembly; 22. Front bracket assembly; 23. Upper vertical rod assembly; 24. Lower vertical rod assembly; 31. First seat assembly; 311. First backrest; 312. First seat; 32. Second seat assembly; 321. Second seat; 322. Second backrest; 33. Third seat assembly; 331. Third seat; 332. Third backrest; 4. Front enclosure rod assembly; 5. Support structure; 6. Tow bar; 7. Front wheel assembly; 8. Rear wheel assembly. DETAILED DESCRIPTION

[0062] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0063] In the following description, directions such as "front," "rear," "left," "right," "up," and "down" are all based on Figure 2 , where the left side of the figure is designated "front," the right side is designated "rear," the top side is designated "up," and the bottom side is designated "down." Directions perpendicular to the paper are designated "left" and "right." These definitions of directions are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Example 1

[0064] As shown in Figures 1 to 33, the multifunctional vehicle of the present invention includes a base frame 1, a frame assembly 2 arranged on the base frame 1, a front wheel assembly 7 arranged at the bottom front portion of the base frame 1, and a rear wheel assembly 8 arranged at the bottom rear portion of the base frame 1.

[0065] The frame assembly 2 is movably disposed on the base frame 1 , such that the frame assembly 2 can move relative to the base frame 1 so that the carrier has at least a first use state and a second use state.

[0066] When the carrier is in the first usage state, the frame assembly 2 is located above the base frame 1 and encloses a child-carrying space with the base frame 1. When the carrier is in the second usage state, at least a portion of the frame assembly 2 moves to be arranged in parallel with the base frame 1 and together with the base frame 1 forms a supporting structure.

[0067] In this embodiment, the frame assembly 2 is rotatably mounted on the end of the base frame 1 . The frame assembly 2 can rotate as a whole relative to the base frame 1 , and after the rotation, the frame assembly 2 rotates to a position parallel to the base frame 1 .

[0068] Specifically, one end of the frame assembly 2 is rotatably connected to the rear portion of the base frame 1, and the other end of the frame assembly 2 is detachably connected to the front portion of the base frame 1. When the connection between the other end of the frame assembly 2 and the front portion of the base frame 1 is disconnected, the frame assembly 2 as a whole can be rotated backward relative to the base frame 1 to a position arranged side by side with the base frame 1.

[0069] In the present embodiment, a specific structure of an enclosure frame assembly 2 is provided. Specifically, as shown in Figures 1 to 33, the enclosure frame assembly 2 includes a lower enclosure rod assembly 21, a front bracket assembly 22 and a vertical rod assembly, and the vertical rod assembly includes an upper vertical rod assembly 23 and a lower vertical rod assembly 24. One end of the lower enclosure rod assembly 21 is rotatably connected to the rear portion of the chassis 1, and the other end of the lower enclosure rod assembly 21 is detachably connected to the front portion of the chassis 1. One end of the front bracket assembly 22 is rotatably connected to the other end of the lower enclosure rod assembly 21, and the other end of the front bracket assembly 22 is rotatably connected to the upper end of the upper vertical rod assembly 23. The lower end of the upper vertical rod assembly 23 is rotatably connected to the upper end of the lower vertical rod assembly 24, and the lower end of the lower vertical rod assembly 24 is rotatably connected to one end of the lower enclosure rod assembly 21. In this way, a four-bar linkage is formed between the lower enclosure rod assembly 21, the front bracket assembly 22, the upper upright rod assembly 23 and the lower upright rod assembly 24. The rods that make up the four-bar linkage can rotate relative to each other, so that the enclosure frame assembly 2 has an expanded state and a folded state, and can be converted between the expanded state and the folded state.

[0070] The vertical pole assemblies are respectively arranged on the left and right sides of the frame assembly 2, and a cross bar is also arranged between the vertical pole assemblies on the left and right sides. The vertical pole assemblies and the cross bar on the left and right sides form the rear frame of the frame assembly 2.

[0071] When the vehicle is in the first usage state, the frame assembly 2 is entirely located above the base frame 1, and the other end of the frame assembly 2 is connected to the front portion of the base frame 1, as shown in Figures 1 to 22. In this state, the vehicle is used as a trailer, and the space inside the vehicle can be used for children to sit or for items to be placed.

[0072] When the vehicle is in the second usage state, the other end of the frame assembly 2 is disconnected from the front of the base frame 1, and the frame assembly 2 as a whole rotates relative to the base frame 1 to be located behind the base frame 1. At this time, the rear frame of the frame assembly 2 rotates to connect with the plane of the base frame 1, serving as an outward extension of the base frame 1, as shown in Figures 23 and 24. In this case, the vehicle can be used as a bed or tent, and the base frame 1 and the vehicle's storage space together form a space for lying down or sitting.

[0073] When the vehicle is in the first use state, a seat assembly can be provided in the accommodation space of the vehicle for the child to sit on. At least one seat assembly can be provided.

[0074] Generally, there are one or two seat assemblies. When there is one seat assembly, the vehicle is a single-person trailer, as shown in Figures 13 and 14. When there are two seat assemblies, the vehicle is a double-person trailer, as shown in Figures 1 to 12, 15, and 22.

[0075] The seat assembly may include a first seat assembly 31. When the space within the frame assembly 2 is limited and multiple seat assemblies cannot be installed, the first seat assembly 31 may be fixed to the frame assembly 2, thereby saving a certain amount of space. When the frame assembly 2 rotates relative to the base frame 1 to convert the vehicle between the first and second usage states, the first seat assembly 31 rotates synchronously with the frame assembly 2.

[0076] As shown in Figures 1 to 4, the first seat assembly 31 includes a first backrest 311 and a first seat 312. The first backrest 311 is fixedly arranged between the upright assemblies on both sides, and the first seat 312 is arranged on the first backrest 311.

[0077] When the carrier is in the first usage state, the first backrest 311 extends vertically, and the first seat 312 is mounted on the base frame 1. The first seat 312 supports the child's buttocks, and the first backrest 311 supports the child's back, as shown in Figures 1 to 4. When the carrier is in the second usage state, the first backrest 311 extends forward and backward and sequentially connects with the base frame 1, and the first seat 312 remains mounted on the base frame 1. In this case, the first backrest 311 and the base frame 1 are jointly used for lying down, as shown in Figures 23 and 24.

[0078] In this embodiment, the first seat 312 is integrally arranged with the first backrest 311, and both the first backrest 311 and the first seat 312 are made of flexible material, so that when the vehicle is switched between the first usage state and the second usage state, the angle between the first backrest 311 and the first seat 312 can change.

[0079] The seat assembly may further include a second seat assembly 32, comprising a second seat 321 and a second backrest 322. Preferably, the second seat 321 and the second backrest 322 are pivotally connected, allowing the second backrest 322 to pivot relative to the second seat 321 and move closer to the base frame 1. The second seat assembly 32 is detachably mounted on the base frame 1, allowing it to be removed from the base frame 1 when the vehicle is switched to the second usage configuration.

[0080] In one embodiment, the second seat assembly 32 is detachably connected only to the base frame 1. Specifically, plugs are provided on the left and right sides of the second seat 321, and sockets are provided at corresponding locations on the base frame 1. The detachable connection between the plugs and sockets on the corresponding sides enables the detachable connection of the second seat assembly 32 to the base frame 1, as shown in Figures 3, 4, 11, and 12.

[0081] The second seat assembly 32 can be mounted on the base frame 1 in a forward direction, in which case the child faces forward when sitting in the second seat assembly 32, as shown in Figures 3, 4, 11, and 12. The second seat assembly 32 can also be mounted on the base frame 1 in a reverse direction, in which case the child faces backward when sitting in the second seat assembly 32.

[0082] By detachably connecting the second seat assembly 32 to the base frame 1 , the second seat assembly 32 can be installed on the base frame 1 in a reverse direction.

[0083] In another embodiment, the second seat assembly 32 is rotatably and detachably connected to the base frame 1, as shown in Figures 1, 2, 5, 6, and 13 to 18. Thus, when the second seat assembly 32 is connected to the base frame 1, the second seat assembly 32 can be rotated relative to the base frame 1 to change direction.

[0084] When multiple second seat assemblies 32 are provided, the connection method of each second seat assemblies 32 to the base frame 1 can be selected according to the storage space within the frame assembly 2. For example, some second seat assemblies 32 can be rotatably and detachably mounted on the base frame 1, while some second seat assemblies 32 can be detachably mounted only on the base frame 1, as shown in Figures 7 to 10.

[0085] When two seat assemblies are installed in the frame assembly 2, the first seat assembly 31 is always in the forward position. The second seat assembly 32 can be in either the forward or reverse position. Specifically, both seat assemblies can be in the forward position, as shown in FIG15 ; or both can be in the reverse position, as shown in FIG18 ; or one can be in the forward position and the other in the reverse position, as shown in FIG16 and FIG17 .

[0086] The carrier may further include a cloth cover disposed on the frame assembly 2. When the carrier is in the first usage state, the cloth covers are disposed on the top, rear, and left and right sides of the frame assembly 2, thereby leaving the front and bottom of the accommodating space of the frame assembly 2 open. Thus, when the carrier is switched from the first usage state to the second usage state, the bottom of the accommodating space of the frame assembly 2 rotates forward, thereby facilitating the child's entry and exit through the bottom opening.

[0087] The vehicle further includes a front fence bar assembly 4, which is rotatably mounted on the frame assembly 2. In this embodiment, the front fence bar assembly 4 is rotatably mounted in front of the front support assembly 22. When the vehicle is in a first state of use, the front fence bar assembly 4 is rotatable relative to the front support assembly 22 to a closed position close to the front support assembly 22, thereby enabling the front fence bar assembly 4 to block the front portion of the vehicle's accommodating space, thereby closing the front portion of the vehicle's accommodating space, as shown in Figures 1 to 18. In the first state of use, the front fence bar assembly 4 is also rotatable relative to the front support assembly 22 and away from the front support assembly 22, thereby assuming an open position, thereby opening the front portion of the vehicle's accommodating space and facilitating children's entry and exit, as shown in Figures 19 and 20.

[0088] The front wall bar assembly 4 can also be slidably arranged relative to the frame assembly 2 , that is, the front wall bar assembly 4 can also be slidably arranged on the front bracket assembly 22 along the length extension direction of the front bracket assembly 22 .

[0089] When the vehicle is in the first usage state, the front wall bar assembly 4 cannot slide relative to the front bracket assembly 22, and the front portion of the front wall bar assembly 4 does not extend in front of the front bracket assembly 22, as shown in Figures 1 to 22.

[0090] When the vehicle is in the second usage state, the front wall bar assembly 4 slides forward relative to the front bracket assembly 22 and extends to the front of the front bracket assembly 22, and is blocked above the chassis 1, as shown in Figures 23 and 24.

[0091] Of course, the front wall bar assembly 4 can also be slidably arranged on the front bracket assembly 22 only along the longitudinal extension direction of the front bracket assembly 22. In this way, when the vehicle is in the first usage state, the front wall bar assembly 4 can be slid relative to the front bracket assembly 22 to the front of the front bracket assembly 22, so that the front wall bar assembly 4 can block the front of the vehicle's accommodating space, making the vehicle's accommodating space closed. The front wall bar assembly 4 can also be slid backward relative to the front bracket assembly 22 to the rear of the front bracket assembly 22, so that the front of the vehicle's accommodating space is open. When the vehicle is in the second usage state, the front wall bar assembly 4 can similarly be slid forward relative to the front bracket assembly 22 to extend to the front of the front bracket assembly 22 and block the top of the chassis 1.

[0092] The vehicle also includes a support structure 5, which is positioned near the top of the frame assembly 2. When the vehicle is in a first use configuration, at least a portion of the support structure 5 extends to the rear of the frame assembly 2 to form a handle for moving the vehicle, as shown in Figures 1 to 22. When the vehicle is in a second use configuration, the support structure 5 is supported between the ground and the frame assembly 2, providing greater stability for the vehicle, as shown in Figures 23 and 24.

[0093] The support structure 5 is preferably rotatably mounted to the frame assembly 2. This allows the rear frame to be tilted relative to the chassis 1 when the vehicle is in the second use state, and the handle position to be adjusted for easier pushing in the first use state. Furthermore, when the vehicle is folded, the support structure 5 can be rotated closer to the frame assembly 2 to reduce the dimensions of the folded vehicle.

[0094] In this embodiment, one end of the support structure 5 is rotatably connected to the other end of the front bracket assembly 22 .

[0095] As shown in Figures 21 and 22, the vehicle also includes a tow bar 6, which allows the vehicle to be connected to a bicycle or other vehicle, so that the vehicle can be pulled along with the bicycle. Preferably, the tow bar 6 is detachably mounted on the front portion of the chassis 1. When the vehicle needs to be towed by another vehicle, the tow bar 6 is connected to the chassis 1. At this point, the front wheel assembly 7 can be reversely mounted on the chassis 1, allowing the front wheel assembly 7 to lift off the ground during towing. When the vehicle no longer needs to be towed by another vehicle, the tow bar 6 can be removed from the chassis 1.

[0096] The vehicle has an unfolded state and a folded state. When the vehicle is in the unfolded state, the vehicle can be in a first use state or a second use state, and can be switched arbitrarily between the first use state and the second use state.

[0097] When the vehicle is switched from the first to the second configuration, the connection between the other end of the lower enclosure bar assembly 21 and the front portion of the chassis 1 is removed, and the enclosure frame assembly 2 is rotated backward relative to the chassis 1 until the bottom of the support structure 5 contacts the ground. At this point, the front wheel assembly 7, the rear wheel assembly 8, and the support structure 5 are supported on the ground, as shown in Figures 25 and 26. The second seat assembly 32, which is mounted on the chassis 1, is removed from the chassis 1, as shown in Figures 27 and 28. Finally, the front enclosure bar assembly 4 is slid forward relative to the front support assembly 22 until it extends substantially forward of the front support assembly 22 and blocks the upper portion of the chassis 1, as shown in Figures 23 and 24. The vehicle is now in the second configuration.

[0098] When the vehicle is switched from the second use state to the first use state, the above steps can be reversed.

[0099] When the vehicle is folded, it is first switched to the first use state, with the support structure 5 rotated forward to be close to the front bracket assembly 22; the second backrest 322 of the second seat assembly 32 rotated to be close to the base frame 1; the front bracket assembly 22 is rotated downward relative to the lower enclosure assembly 21, so that the upper upright assembly 23 and the lower upright assembly 24 rotate relative to each other, and the lower upright assembly 24 is rotated forward relative to the lower enclosure assembly 21 to be close to the lower enclosure assembly 21. The folding process is shown in Figures 29 and 30. The process continues until the front bracket assembly 22, the upper upright assembly 23, and the lower upright assembly 24 are all close to the lower enclosure assembly 21, and the vehicle is finally folded as shown in Figures 31 and 32. After the vehicle is folded, its height is greatly reduced, making it easier to store when not in use. Example 2

[0100] In this embodiment, the frame assembly does not include a lower enclosure rod assembly 21. One end of the front bracket assembly 22 is rotatably connected to the front portion of the base frame 1, and the connection between one end of the front bracket assembly 22 and the front portion of the base frame 1 is detachable. The lower end of the lower upright rod assembly 24 is rotatably connected to the rear portion of the base frame 1.

[0101] When the vehicle is in the first usage state, one end of the front bracket assembly 22 is connected to the front portion of the chassis 1. After the connection between the one end of the front bracket assembly 22 and the front portion of the chassis 1 is removed, the frame assembly can be rotated backward as a whole, thereby converting the vehicle into the second usage state.

[0102] The rest is the same as Example 1. Example 3

[0103] In this embodiment, the connection between the upper end of the upper pole assembly 23 and the other end of the front bracket assembly 22 is detachable. When the vehicle is in the first usage state, the upper end of the upper pole assembly 23 and the other end of the front bracket assembly 22 are in a connected state. After the connection between the upper end of the upper pole assembly 23 and the other end of the front bracket assembly 22 is disassembled, the upper pole assembly 23 and the lower pole assembly 24 are rotated backward relative to the lower enclosure rod assembly 21 or the base frame 1 as a whole, thereby converting the vehicle into the second usage state. At this time, the vehicle's storage space, the upper pole assembly 23, and the lower pole assembly 24 together form a space for lying down or riding.

[0104] In this embodiment, the connection between the cloth cover arranged at the rear of the frame assembly and other components is detachable, so that when the carrier is converted from the first usage state to the second usage state, the connection between the cloth cover and other components can be disengaged, and the cloth cover will not hinder the rotation of the upper pole assembly 23 and the lower pole assembly 24.

[0105] Except that the other end of the lower enclosure rod assembly 21 does not need to be detachably connected to the front portion of the chassis 1, the rest is the same as Example 1, or except that one end of the front bracket assembly 22 does not need to be detachably connected to the front portion of the chassis 1, the rest is the same as Example 2. Example 4

[0106] In this embodiment, the frame assembly includes a frame body and a support plate assembly disposed on the frame body. One end of the support plate assembly is rotatably connected to the rear portion of the base frame 1, and the support plate assembly is detachably connected to the frame body. When the vehicle is in a first usage state, the support plate assembly extends in the up-down direction, is connected to the frame body, and is located at the rear portion of the frame body. When the connection between the support plate assembly and the frame body is disassembled, the support plate assembly can be rotated backward relative to the base frame 1. When the vehicle is in a second usage state, the frame body is located above the base frame 1, and the support plate assembly is rotated to the rear portion of the base frame 1. The vehicle's accommodating space and the support plate assembly together form a space for lying down or riding.

[0107] The frame body may include a lower enclosure rod assembly 21, a front bracket assembly 22, an upper upright assembly 23 and a lower upright assembly 24 as in embodiment 1. Except that the other end of the lower enclosure rod assembly 21 does not need to be detachably connected to the front portion of the chassis 1, the rest is the same as in embodiment 1.

[0108] Alternatively, the frame body may also include a front support assembly 22, an upper upright assembly 23 and a lower upright assembly 24 as in embodiment 2. Except that one end of the front support assembly 22 does not need to be detachably connected to the front portion of the base frame 1, the rest is the same as in embodiment 2.

[0109] In this embodiment, the upper and lower upright assemblies 23 and 24 are respectively arranged on the left and right sides, and the support plate assembly is located between the upper and lower upright assemblies 23 and 24 on the left and right sides. To enable the carrier to be folded, the support plate assembly includes two support plates pivotally connected at one end, and the pivotal connection position of the two support plates corresponds to the pivotal connection position of the upper and lower upright assemblies 23 and 24.

[0110] In this embodiment, the rear portion of the accommodating space of the surrounding frame assembly does not need to be provided with a cloth cover. When the carrier is in the first usage state, the rear portion of the accommodating space is shielded by the support plate assembly. Example 5

[0111] In this embodiment, as shown in Figures 34 and 35, the vehicle further includes a third seat assembly 33, which includes a third seat 331 and a third backrest 332. The third seat 331 is connected to the rear portion of the base frame 1, and the third backrest 332 is rotatably connected to the third seat 331.

[0112] When the vehicle is in the first usage state, the third backrest 332 extends vertically and is located within the vehicle's accommodating space and at the rear of the accommodating space. When the vehicle is in the second usage state, the third backrest 332 rotates relative to the third seat 331 to be located outside the vehicle's accommodating space and behind the base frame 1. The vehicle's accommodating space and the third backrest 332 together form a space for lying down or sitting.

[0113] In this embodiment, the connection between the cloth cover arranged at the rear of the frame assembly and other components is detachable, so that when the vehicle is converted from the first usage state to the second usage state, the connection between the cloth cover and other components can be disconnected, and the cloth cover will not hinder the rotation of the third backrest 332.

[0114] In this embodiment, the carrier does not include the first seat assembly 31 , and a second seat assembly 32 may be disposed in the accommodating space of the carrier.

[0115] Except that the other end of the lower enclosure rod assembly 21 does not need to be detachably connected to the front portion of the chassis 1, the rest is the same as Example 1, or except that one end of the front bracket assembly 22 does not need to be detachably connected to the front portion of the chassis 1, the rest is the same as Example 2.

[0116] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made in accordance with the spirit of the present invention are intended to be covered by the scope of protection of the present invention.

Claims

1. A multi-functional vehicle, characterized in that: It includes a chassis and an enclosure assembly disposed on the chassis; the vehicle has a first usage state and a second usage state. When the vehicle is in the first usage state, the enclosure assembly is located above the chassis and encloses an accommodation space with the chassis; When the vehicle is in the second usage state, at least part of the enclosure assembly moves to be arranged side by side with the chassis and forms a supporting load-bearing structure together with the chassis.

2. The multi-functional vehicle according to claim 1, wherein: The enclosure assembly is rotatably mounted at the end of the chassis. The enclosure assembly can rotate integrally relative to the chassis, and after rotation, the enclosure assembly rotates to a position arranged side by side with the chassis.

3. The multi-functional vehicle according to claim 2, wherein: The enclosure assembly is rotatably mounted at the rear end of the chassis and has a rear enclosure. In the second usage state, the rear enclosure rotates to be in connection with the plane where the chassis is located to serve as an extension of the chassis outward.

4. The multi-functional vehicle according to claim 3, wherein: The multi-functional vehicle further has a support structure disposed on the enclosure assembly. In the second usage state, the support structure supports between the ground and the enclosure assembly.

5. The multi-functional vehicle according to claim 4, characterized in that: The support structure is disposed at a position close to the top of the enclosure assembly.

6. The multi-functional vehicle according to claim 5, characterized in that: In the first usage state, at least part of the support structure extends to the rear side of the enclosure assembly to form a handle for pushing the multi-functional vehicle.

7. The multi-functional vehicle according to claim 6, wherein: The support structure is rotatably mounted on the enclosure assembly to adjust the inclination angle of the rear enclosure relative to the chassis in the second usage state and to adjust the position of the handle in the first usage state.

8. The multi-functional vehicle according to claim 1, wherein: The vehicle further includes a seat assembly disposed in the accommodation space when the vehicle is in the first usage state; The seat assembly includes a first seat assembly. The first seat assembly includes a first backrest disposed on the enclosure assembly. When the vehicle is in the second usage state, the first backrest extends along the plane where the chassis is located and is sequentially connected to the chassis.

9. The multi-functional vehicle according to claim 8, wherein: The enclosure assembly includes a rear enclosure having a frame structure. The frame structure includes a pair of vertical rod assemblies and a cross bar connected between the pair of vertical rod assemblies. The first backrest includes a flexible connecting member disposed between the pair of vertical rod assemblies. The flexible connecting member is a cloth cover.

10. The multi-functional vehicle according to claim 8, characterized in that: The seat assembly further includes a second seat assembly. The second seat assembly can rotate and is detachably disposed on the chassis; or, the second seat assembly is detachably disposed on the chassis.

11. The multi-functional vehicle according to claim 10, wherein: The second seat assembly includes a second seat and a second backrest rotatably connected to the lower part of the second seat. The second seat is rotatably and detachably or detachably connected to the chassis; When the vehicle is in the first usage state, the first seat assembly and the second seat assembly face the same direction or opposite directions.

12. The multi-functional vehicle according to claim 1, wherein: The vehicle further includes a front enclosure rod assembly that can be rotatably disposed on the enclosure assembly. When the vehicle is in the first usage state, the front enclosure rod assembly can rotate to a closed position close to the enclosure assembly. In the closed position, the front enclosure rod assembly blocks the front part of the accommodation space of the vehicle. The front enclosure rod assembly can rotate to an open position. In the open position, the front enclosure rod assembly rotates in the direction of opening the accommodation space.

13. The multi-functional vehicle according to claim 12, wherein: The front enclosure bar assembly can also be slidably arranged relative to the enclosure frame assembly. When the vehicle is in the first use state, the front enclosure bar assembly cannot slide relative to the enclosure frame assembly. When the vehicle is in the second use state and the enclosure frame assembly rotates as a whole to the rear of the chassis, the front enclosure bar assembly slides forward relative to the enclosure frame assembly and extends out of the enclosure frame assembly, and shields above the chassis.

14. The multi-functional vehicle according to claim 1, wherein: The vehicle further includes a front enclosure bar assembly that can be slidably arranged on the enclosure frame assembly. When the vehicle is in the first use state, the front enclosure bar assembly can slide relative to the enclosure frame assembly to open or close the front part of the accommodation space of the vehicle. When the vehicle is in the second use state and the enclosure frame assembly rotates as a whole to the rear of the chassis, the front enclosure bar assembly slides forward relative to the enclosure frame assembly and extends out of the enclosure frame assembly, and shields above the chassis.

15. The multi-functional vehicle according to claim 1, characterized in that: The enclosure frame assembly includes a lower enclosure bar assembly, a front support assembly, an upper vertical rod assembly, and a lower vertical rod assembly. One end of the lower enclosure bar assembly is rotatably connected to the rear part of the chassis, and the other end of the lower enclosure bar assembly is detachably connected to the front part of the chassis. One end of the front support assembly is rotatably connected to the other end of the lower enclosure bar assembly, and the other end of the front support assembly is rotatably connected to the upper end of the upper vertical rod assembly. The lower end of the upper vertical rod assembly is rotatably connected to the upper end of the lower vertical rod assembly, and the lower end of the lower vertical rod assembly is rotatably connected to one end of the lower enclosure bar assembly. When the vehicle is in the first use state, the other end of the lower enclosure bar assembly is in a connected state with the front part of the chassis. When the vehicle is in the second use state, the connection between the other end of the lower enclosure bar assembly and the front part of the chassis is disconnected, and the enclosure frame assembly rotates as a whole to the rear of the chassis.

16. The multi-functional vehicle according to claim 1, wherein: The enclosure frame assembly includes a front support assembly, an upper vertical rod assembly, and a lower vertical rod assembly. One end of the front support assembly is rotatably connected to the front part of the chassis, and the connection between the front support assembly and the front part of the chassis is detachable. The other end of the front support assembly is rotatably connected to the upper end of the upper vertical rod assembly. The lower end of the upper vertical rod assembly is rotatably connected to the upper end of the lower vertical rod assembly, and the lower end of the lower vertical rod assembly is rotatably connected to the rear part of the chassis. When the vehicle is in the first use state, one end of the front support assembly is in a connected state with the front part of the chassis. When the vehicle is in the second use state, the connection between the front support assembly and the front part of the chassis is disconnected, and the enclosure frame assembly rotates as a whole to the rear of the chassis.

17. The multi-functional vehicle according to claim 1, wherein: The vehicle further includes a front wheel assembly arranged at the front bottom part of the chassis and a rear wheel assembly arranged at the rear bottom part of the chassis.

18. A multi-functional vehicle, characterized in that: It includes a chassis, an enclosure assembly provided on the chassis and having an accommodation space, and a third seat assembly. The third seat assembly includes a third seat connected to the rear part of the chassis and a third backrest rotatably connected to the third seat. The vehicle has a first use state and a second use state. When the vehicle is in the first use state, the third backrest extends in the up-and-down direction and is located within the accommodation space of the enclosure assembly; when the vehicle is in the second use state, the third backrest rotates relative to the seat to be located outside the accommodation space of the enclosure assembly and behind the chassis.

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