Carrier and travel apparatus

Abstract

Disclosed in the present invention are a carrier and a travel apparatus. The carrier comprises: a box body portion; and a canopy portion, the canopy portion being detachably connected to the box body portion by means of a plurality of connecting reinforcing components so as to fasten the canopy portion to the box body portion, wherein a first end portion of each connecting reinforcing component is connected to the canopy portion or the connecting reinforcing component and the canopy portion form an integrated structure, the connecting reinforcing component has a second end portion extending out of the canopy portion, and the second end portion of the connecting reinforcing component is detachably connected to the box body portion; or the connecting reinforcing component comprises a first connecting component and a second connecting component, the first connecting component is connected to the canopy portion, the second connecting component is connected to the box body portion, and the first connecting component and the second connecting component are detachably connected.

Description

[0001]CARRIER AND TRAVEL DEVICE TECHNICAL FIELD The present invention generally relates to a travel device. Specifically, the present invention relates to a carrier and a travel device for confining animals therein. BACKGROUND In recent years, many people regard their pets as family members or companions, and therefore pay more and more attention to the companionship and care of their pets, including the safety of pets in vehicles. That is, more and more people pay the same attention and effort to the safety of pets in vehicles as to the safety of babies in vehicles. It is very common to carry pets in a carrier of a travel device. However, when the carrier is subjected to impact such as a collision, the roof of the carrier is easy to fall off. In addition, for current travel devices with a carrier attachment mechanism provided on the base, if the connection release mechanism is provided at the bottom or side of the base, it may not be easy for the pet owner to attach the carrier to the base or detach it from the base. SUMMARY OF THE INVENTION In one aspect, the present invention provides a vehicle comprising: a box portion; a roof portion, the roof portion being detachably connected to the box portion via a plurality of connecting reinforcements, the roof portion being fixed to the box portion by a bolt; wherein a first end of the connecting reinforcement is connected to the roof portion or the connecting reinforcement and the roof portion form an integral structure, the connecting reinforcement has a second end extending from the roof portion, and the second end of the connecting reinforcement is detachably connected to the box portion; or, the connecting reinforcement comprises a first connecting member and a second connecting member, the first connecting member being connected to the roof portion, the second connecting member being connected to the box portion, and the first connecting member and the second connecting member being detachably connected. Furthermore, the carrier also includes a bracket assembly connected to the box part; wherein the bracket assembly is provided with a retaining ring, the retaining ring forms an opening, and the second end of the connecting reinforcement extends through the opening and is reversed toward the ceiling part to be positioned; or the bracket assembly includes a recess, the second end of the connecting reinforcement has a rigid hook-shaped end, and the hook-shaped end is suitable for being received by the recess; or the first end of the connecting reinforcement is provided with a second guide rod; the bracket assembly is formed with a first guide groove, the first guide groove is used to receive, guide and limit the first guide rod; or the connecting reinforcement includes a first connecting strap having the first end and the second end; the carrier also includes a second connecting strap, the second connecting strap is connected to the bracket assembly, and the second connecting strap has an exposed free end; the free end of the second connecting strap is detachably connected to the second end of the first connecting strap.Furthermore, the first connecting belt is attached to the surface of the bracket assembly facing the outer bottom of the box portion, and the free end of the first connecting belt passes between the bracket assembly and the box portion and is exposed; or the bracket assembly has a hollow channel, and the second connecting belt extends in the hollow channel and is exposed from the end of the hollow channel; or the bracket assembly is formed with a second guide groove, and the second connecting belt includes a second guide rod embedded in the second connecting belt, and the second guide rod is suitable for being accommodated in the second guide groove. Further, the bracket assembly includes a first frame, a second frame and a connecting frame, the first frame is close to the upper periphery of the box part, the second frame is located below the first frame, the connecting frame is connected between the first frame and the second frame, and the respective contours of the first frame and the connecting frame correspond to the contour of the box part; the second connecting belt is connected to the surface of the outer bottom of the box part of the connecting frame through a fastener, and the free end of the second connecting belt is exposed at the end of the connecting frame; or the connecting frame forms the hollow channel, and the free end of the first connecting belt is exposed from the end of the connecting frame; or the connecting frame is formed with the second guide groove. Furthermore, the carrier includes a accommodating body, the accommodating body includes the box portion; the accommodating body has a top opening, and the ceiling portion covers the accommodating body to cover the top opening; the bottom frame of the ceiling portion includes two opposite first side edges and two opposite first side edges, and the two first side edges are located between the two first side edges; the accommodating body includes two opposite first side edges and two opposite second side edges, and the two second side edges are located between the two first side edges; at least one connecting reinforcement is provided between each of the first side edges and the opposite first side edges, and at least one connecting reinforcement is provided between each of the second side edges and the opposite second side edges.Furthermore, the carrier includes a accommodating body, which includes the box part; the accommodating body has a top opening, and the roof part covers the accommodating body to cover the top opening; wherein, the roof part includes two oppositely arranged half-ceilings, the two half-ceilings are respectively a first half-ceiling and a second half-ceiling, and the edges of the first half-ceiling and the second half-ceiling facing each other are detachably connected by at least one connecting component; or the roof part includes a fixed roof and a movable roof, and the fixed roof is non-detachably connected to the accommodating body; the bottom of the movable roof and the accommodating body are detachably connected by at least one connecting reinforcement, and / or the edges of the movable roof and the fixed roof facing each other are detachably connected by at least one connecting component. Furthermore, the opposing edges of the first half ceiling and the second half ceiling are attracted to each other by a magnetic device serving as the connecting component; the magnetic device includes: a first magnet, arranged on the edge of the first half ceiling; a second magnet, arranged on the edge of the second half ceiling; when the opposing edges of the first half ceiling and the second half ceiling abut against each other, the first magnet and the second magnet are attracted to each other; or a knob is installed on one of the opposing edges of the first half ceiling and the second half ceiling, and the knob is provided with a third magnet; when the opposing edges of the first half ceiling and the second half ceiling abut against each other, the third magnet is attracted to or repels the first magnet and the second magnet by rotating the knob. Furthermore, when the opposing edges of the first and second half roofs abut against each other, the first and second magnets overlap. A lifting portion is provided on the first half roof or the second half roof where the upper one of the first and second magnets is located. Alternatively, a pivot seat and a hole are provided on the first half roof or the second half roof where the upper one of the first and second magnets is located. The pivot seat is pivotally connected to an operating member, the operating member comprising an abutting end and an operating end. When the operating end is driven by an external force, the abutting end passes through the hole and applies a downward thrust to the lower second half roof or the first half roof, thereby separating the first and second magnets. In another aspect, the present invention provides a carrier comprising: a housing, the housing comprising a bottom wall and side walls; at least one telescopic wall mounted on the side walls of the housing, the at least one telescopic wall being capable of extending and retracting in the height direction of the housing; and a locking mechanism for locking the position of the at least one telescopic wall.In another aspect, the present invention provides a vehicle having a bottom portion provided with a clamping member or connecting rod adapted to rotate between a use position and a storage position. Furthermore, the vehicle comprises a bottom support structure and a receiving portion located above the bottom support structure; the bottom of the bottom support structure is formed with a recessed portion, wherein at least one rod is disposed within the recessed portion, and at least one clamping member is mounted on at least one of the rods, each of the clamping members having an outwardly protruding R-shaped connection; the K-shaped connection can rotate about the rod on which it is mounted to rotate the R-shaped connection to either the use position or the storage position. Furthermore, the vehicle comprises a box portion, and the outer bottom portion of the vehicle comprises a recessed portion; in the storage position, the connecting rod is received in the recessed portion; in the use position, the connecting rod pivots out of the recessed portion. In yet another aspect, the present invention provides a travel device comprising a base and a vehicle, wherein the vehicle is detachably connected to the base. Furthermore, the carrier includes a connecting rod received in a recessed portion on the carrier's outer bottom and capable of pivoting out of the recessed portion. The base includes a connecting recess and a first actuator. A connecting component is disposed in the connecting recess, the connecting component having an opening for the connecting rod to pass through, and an inclined surface for guiding the connecting rod. The carrier is provided with a first actuator at a position corresponding to the second actuator. When the carrier is placed on the base, the first actuator triggers the first actuator, which, upon triggering the second actuator, causes the connecting rod to pivot and engage with the connecting component. Furthermore, the base includes a connecting recess, a connecting component is disposed in the connecting recess, and the connecting component has an opening. The carrier also includes a bracket assembly connected to the housing. The bracket assembly includes a second frame that can slidably engage with the connecting recess. The first frame can be loaded into the connecting component through the opening of the connecting component. The first frame is provided with a structure that engages with the connecting component. Furthermore, the second frame is provided with a connecting column that can be extended and retracted; when the second frame is loaded into the connecting component, the connecting column is adapted to extend from the second frame to engage with the connecting component; or, a stop ring is provided on the second frame, and when the first frame is loaded into the connecting component and the first frame slides into place relative to the connecting component, the stop ring engages with the connecting component.Furthermore, the base is in sliding engagement with the carrier, and the base is provided with an actuating portion and a connecting component that can extend and retract relative to the base; when the carrier slides into position on the base, the actuating portion is triggered, causing the connecting component to extend and engage with the carrier. Furthermore, the base includes a guide groove in which the connecting component and the actuating portion are disposed, and the connecting component is extendable and retractable relative to the guide groove. The carrier further includes a bracket assembly connected to the housing portion, the bracket assembly including a second frame for engaging the connecting component, and a guide member mounted on the bracket assembly that slidably engages with the guide groove. When the guide member slides into position, the guide member triggers the actuating portion, causing the connecting component to extend relative to the guide groove and engage with the second frame. Alternatively, the base defines an interior space, and the carrier slidably engages with the interior space. The connecting component and the actuating portion are disposed in the interior space, and the connecting component is extendable and retractable relative to the wall of the interior space. The carrier includes a connecting recess for engaging with the connecting component. When the carrier slides into position, the housing portion triggers the actuating portion, causing the connecting component to extend and engage with the connecting recess. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which constitute a part of this application, are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided for illustrative purposes only and are not intended to unduly limit the present invention. Figures 1A and 1B schematically illustrate perspective views of a travel device carrier according to an exemplary embodiment of the present invention. Figure 2 schematically illustrates a side view of a travel device carrier according to an exemplary embodiment of the present invention. Figures 3A and 3B schematically illustrate perspective views of a travel device carrier according to an exemplary embodiment of the present invention. Figure 4 schematically illustrates a side view of a travel device carrier according to an exemplary embodiment of the present invention. Figure 5 schematically illustrates a side view of a travel device carrier according to an exemplary embodiment of the present invention. Figures 6A to 6C schematically illustrate perspective views of a travel device carrier according to an exemplary embodiment of the present invention. Figure 7 schematically illustrates a side view of a travel device carrier according to an exemplary embodiment of the present invention. Figures 8A and 8B schematically illustrate perspective views of a travel device carrier according to an exemplary embodiment of the present invention. Figure 8C illustrates a schematic perspective view of a portion of a bracket assembly. Figure 9 schematically illustrates a perspective view of a travel device carrier according to an exemplary embodiment of the present invention. Figure 10 schematically illustrates a side view of a travel device carrier according to an exemplary embodiment of the present invention. Figures 11A to 11C are perspective views of the bracket assembly of the travel device shown in Figures 9 and 10. Figure 11D schematically illustrates details of the second connecting strap and guide rod coupled to the connecting frame.FIG12 schematically shows a perspective view of a vehicle of a travel device according to an exemplary embodiment of the present invention. FIG13A to FIG13E schematically show different views of a travel device according to an exemplary embodiment of the present invention. FIG14A and FIG14B schematically show different views of a travel device according to an exemplary embodiment of the present invention. FIG15A and FIG15B schematically show different views of a travel device according to an exemplary embodiment of the present invention. FIG16A to FIG16E schematically show different views of a travel device according to an exemplary embodiment of the present invention. FIG17A to FIG17E schematically show different views of a travel device according to an exemplary embodiment of the present invention. Figure 18 shows a stereoscopic view of a vehicle provided according to some embodiments of the present invention, wherein the roof assembly is connected to the accommodating body and the roof assembly is in a fully expanded state; Figure 19 shows a top view of the vehicle shown in Figure 18; Figure 20 shows a stereoscopic view of the vehicle shown in Figure 18 with the roof assembly and the accommodating body completely separated; Figure 21 shows a stereoscopic view of the vehicle shown in Figure 18, with the roof assembly in an incompletely expanded state; Figures 22 to 23 show stereoscopic views of a variation of the connecting assembly; Figures 24 and 25 show stereoscopic views of another variation of the connecting assembly; Figures 26 and 27 show stereoscopic views of yet another variation of the connecting assembly; Figures 28 and 29 show stereoscopic views of yet another variation of the connecting assembly; and Figure 30 shows a stereoscopic view of a vehicle provided according to some embodiments of the present invention.FIG31 is a top view of the vehicle shown in FIG30 ; FIG32 is a perspective view of the movable roof in FIG30 being separated from the fixed roof; FIG33 to FIG36 are perspective views of a vehicle provided according to some embodiments of the present invention from different perspectives, wherein the clips in FIG34 and FIG35 are in a stored position, and the clips in FIG36 are in a use position; FIG37 is a variation of the vehicle shown in FIG33 to FIG36 ; FIG38 is another variation of the vehicle shown in FIG33 to FIG36 ; FIG39 is yet another variation of the vehicle shown in FIG33 to FIG36 ; FIG40 is a perspective view of a vehicle provided according to some embodiments of the present invention; FIG41 is a top view of the vehicle shown in FIG40 ; FIG42 is a perspective view of the movable roof in FIG40 being separated from the fixed roof; FIG43 is a partial cross-sectional view of the movable roof ULU1 in FIG41 ; FIG44 is a perspective view of a vehicle provided according to some embodiments of the present invention; FIG45 is a top view of the vehicle shown in FIG44 ; FIG46 shows an enlarged view of point C in FIG45 , in which the first magnet and the second magnet of the magnetic device are attracted to each other; FIG47 shows the first magnet and the second magnet in FIG46 separated from each other; FIG48 shows a perspective view of the roof of the vehicle shown in FIG44 in a partially opened state; FIG49 shows a variation of the vehicle shown in FIG44; FIG50 shows a cross-sectional view taken along line U2-U2 in FIG49 , in which the first half roof and the second half roof are connected by the magnetic device; FIG51 shows another working state of the magnetic device in FIG50; FIG52 shows another variation of the vehicle shown in FIG44; FIG53 shows a cross-sectional view taken along line U3-U3 in FIG52; FIG54 shows yet another variation of the vehicle shown in FIG44; FIG55 shows a cross-sectional view taken along line U4-U4 in FIG54; FIG56 shows an exploded view of the magnetic device in FIG54; FIG57 shows a perspective view of a vehicle provided according to some embodiments of the present invention, in which the roof assembly is connected to the receiving body; FIG58 illustrates a top view of the vehicle shown in FIG57 ; FIG59 illustrates a perspective view of the vehicle shown in FIG57 with the roof assembly and the container body fully separated; FIG60 illustrates a perspective view of a container body according to some embodiments of the present invention, the container body being in an operating state; FIG61 illustrates a cross-sectional view taken along line U5-U5 in FIG60 ; and FIG62 illustrates a perspective view of the container body shown in FIG60 , the container body being in another operating state. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The following detailed description of FIG1A through FIG17E is intended to enable one skilled in the art to manufacture and use the travel device of the present invention.For purposes of explanation, specific details are set forth to provide an understanding of the present invention. However, it will be apparent to those skilled in the art that these specific details are not necessary to implement the embodiments of the present invention. The descriptions of specific applications are provided as representative examples only. Various modifications to the embodiments described herein will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other embodiments and applications without departing from the scope of the present invention. The present invention is not limited to the embodiments shown, but is to be accorded the widest possible scope consistent with the principles and features disclosed herein. Furthermore, it should be noted that the serial numbers of the embodiments, such as the first, ..., etc., are used solely to distinguish between the embodiments and do not indicate any preference over one embodiment over another. In the context of the present invention, a travel device includes a carrier for restraining an animal (e.g., a pet) therein, and optionally a base for mounting the carrier thereon. The base is mountable in a vehicle (more specifically, on a vehicle seat) to allow the travel device to be stably installed in the vehicle. When viewed from the top, the carrier can be generally rectangular, having a longitudinal axis (indicated by arrow A in Figures 1A to 17E) and a transverse axis (indicated by arrow B in Figures 1A to 17E). Alternatively, the carrier can be configured in shapes other than rectangular, including but not limited to various equilateral or other shapes. In the present invention, the carrier can be exemplarily arranged and installed on the back seat of a vehicle, with its longitudinal axis parallel to the seat, i.e., its transverse axis (direction B) parallel to the direction of travel of the vehicle. Referring to Figures 1A and 1B , schematic perspective views of a carrier 100 for a travel device according to an exemplary embodiment of the present invention are shown. The travel device includes the carrier 100, which is used to accommodate an animal therein. The carrier 100 can be mounted to a base (not shown) of the travel device installed in the vehicle. The carrier 100 includes a box portion (also referred to as a box) 110, which defines a receiving space for accommodating an animal; a roof portion (also referred to as a roof assembly) 120, which is detachably attached to the box portion 110. The roof portion 120 can be directly connected to the box portion 110, or indirectly connected to the box portion 110, for example, via a bracket assembly 140 described below; and a handle 130, whose ends are pivotally and detachably connected to opposite sides of the box portion 110. The carrier 100 also includes a bracket assembly 140 connected to the box portion 110. The carrier 100 can be mounted on a base (not shown) installed in a vehicle or on a cart via the bracket assembly 140.The box portion 110 and the bracket assembly 140 may be at least a portion of the housing body of the vehicle 100. When viewed from the top, the box portion 110 may be rectangular, including a pair of opposing long sides extending along a longitudinal direction A and a pair of opposing short sides extending along a transverse direction B. In this embodiment, the handle 130 is pivotally connected to the opposing long sides of the box portion 110. The box portion 110 may be covered by a seat cover 115. In this embodiment, the roof portion 120 may be a two-piece roof. That is, the roof portion 120 may include a first (right) cover 121 and a second (left) cover 122, detachably connected to each other via a first connecting member 123, such as a zipper, fastener, or other connector. The first cover 121 and the second cover 122 of the roof portion 120 have similar sizes and shapes and, when connected, give the roof portion 120 a dome-like shape. The dome-shaped roof portion 120 has a lower periphery 120A that corresponds to and is removably connected to the upper periphery 110A of the housing portion 110. =In this embodiment, the roof portion 120 is attached to the perimeter of the seat cover 115 using a second connecting member 124 (e.g., a zipper) to removably connect to the box portion 110. In this embodiment, as described, the roof portion 120 is removably connected to the seat cover 115 using, for example, a zipper as the second connecting member 124, thereby attaching the roof portion 120 to the box portion 110. However, the present invention is not limited to this embodiment. Alternatively, the roof portion may be attached to the box portion using connecting members other than zippers, including but not limited to various fastener assemblies, magnetic connectors, and the like. In this embodiment, the vehicle 100 further includes at least one connecting reinforcement 125 (also referred to as a connecting assembly) disposed on the roof portion 120 to further secure the roof portion 120 to the box portion 110. For example, in this embodiment, the carrier 100 may include six connection reinforcements 125 (one connection reinforcement 125 is provided on each side corresponding to each short side of the box portion 110, and two connection reinforcements 125 are provided on each side corresponding to each long side of the box portion 110). Only three connection reinforcements 125 are shown and labeled in Figures 1A and 1B. Each connection reinforcement 125 is connected to the roof portion 120 at its end (i.e., first end) 125A and extends from the roof portion 120 toward the box portion 110. It can also be detachably connected to the box portion 110 at an end (i.e., second end) 125B distal from end 125A. In this embodiment, the connection reinforcement 125 can be securely attached to the roof portion 120 at its end 125A by, for example, but not limited to, sewing, gluing, laminating, or the like. The connection reinforcement member 125 can be connected to the housing portion 110 via its end portion 125B using various snap fasteners and snaps, such as, but not limited to, a mating cap and socket, a mating stud or eyelet and post, etc. Specifically, the end portion 125B of the connection reinforcement member 125 and the housing portion 110 (e.g., the sidewall of the housing portion 110) are provided with mating snap fasteners or snap fasteners 126 or 116, respectively. Thus, when the corresponding and mating snap fasteners 126 on the connection reinforcement member 125 and the snap fasteners 116 on the housing portion 110 are connected via pressing or snap fastening, the connection between the roof portion 120 and the housing portion 110 can be improved by connecting the six connection reinforcement members 125 to the housing portion 110.That is, in various embodiments of the present invention, the connection between the roof portion 120 and the box portion 110 is improved by at least one connection reinforcement member 125 connected between the top flail portion 120 and the box portion 110. As described, in this embodiment, the connection reinforcement member 125 is securely attached to the roof portion 120 via its end 125A and removably connected to the box portion 110 via its end 125B. However, alternatively, the end 125A of the connection reinforcement member 125 can be removably connected to the roof portion 120 using, for example, various buckles and snaps. Furthermore, in this embodiment, six connection reinforcement members 125 are symmetrically arranged on the roof portion 120, with one connection reinforcement member 125 on each short side and two connection reinforcement members 125 on each long side. This provides an enhanced, stable, and uniform connection between the roof portion 120 and the box portion 110, but the present invention is not limited thereto. In alternative embodiments, depending on the actual design and application of the carrier, the number and location of the connection reinforcements may differ from the embodiment shown in Figures 1A and 1B. The connection reinforcement 125 according to the present invention provides an additional connection between the roof portion 120 and the box portion 110. Thus, when the carrier 100 carrying an animal is subjected to an impact or external collision, the additional connection provided by the connection reinforcement 125 prevents the roof portion 120 from separating from the box portion 110, thereby preventing the animal from "flying out" of the carrier 100 and improving the safety of the animal in the carrier. Please refer to Figure 2, which schematically illustrates a side view of a travel device 200 according to an exemplary embodiment of the present invention. The travel device includes a carrier 200 for accommodating an animal. The carrier 200 has a structure and configuration similar to the carrier 100 shown in Figures 1A and 1B. Carrier 200 includes a box portion 210, a roof portion 220 detachably attached to box portion 210, handles 230 pivotally and detachably connected to opposite sides of box portion 210, and a bracket assembly 240 connected to the outer bottom of box portion 210. Carrier 200 differs from carrier 100 of Figures 1A and 1B in that, in this embodiment, roof portion 220 is primarily comprised of a one-piece lid attached to box portion 210 at its lower periphery 220A, without the use of a zipper as a connecting component. More specifically, roof portion 220 includes a plurality (six in this embodiment) of connecting reinforcements 225 connected to the lid and extending from lower periphery 220A.The connection reinforcements 225 extend toward the box portion 210 and connect to the outer sidewalls of the box portion 210 in a manner similar to the connection reinforcements 125. In this embodiment, the connection reinforcements 225 may be integrally formed with the roof portion 220. That is, the six connection reinforcements 225 in this embodiment form an integral structure with the roof portion 220 and are not removable therefrom, thereby further improving the connection between the roof portion 220 and the box portion 210. In this embodiment, the roof portion 220 may be attached to the box portion 210 solely via the connection reinforcements 225. Alternatively, in addition to the connection reinforcements 225, the roof portion 220 may also be attached to the box portion 210 at its periphery via optional connectors. Referring to Figures 3A and 3B, perspective views of a carrier 300 of a travel device according to an exemplary embodiment of the present invention are schematically shown. The travel device includes the carrier 300, which is used to accommodate an animal. The carrier 300 has a structure and configuration similar to the carrier 100 shown in Figures 1A and 1B. The carrier 300 includes a box portion 310, a roof portion 320 attached to a seat cover 315 and thereby to the box portion 310 via a second connecting member 324 (e.g., a zipper), handles 330 pivotally and detachably connected to opposite sides of the box portion 310, and a bracket assembly 340 connected to the box portion 310. Similarly, the roof portion 320 in this embodiment may include a first (right) cover 321 and a second (left) cover 322. The first (right) cover 321 and the second (left) cover 322 are detachably connected to each other via a first connecting component 323 (e.g., a zipper). Thus, the roof portion 320 can be formed into a dome shape and detachably connected to the upper periphery 310A of the box portion 310 at its lower periphery 320A via a second connecting component 324 (e.g., a zipper or fastener). It should be noted that the portion of the seat cover 315 located below the upper periphery 310A of the box portion 310 is omitted in Figures 3A and 3B to facilitate detailed description of the connection between the connection reinforcement member and the box portion 310 according to this embodiment. The difference between carrier 300 and carrier 100 of Figures 1A and 1B is that, in this embodiment, roof portion 320 can be further secured to box portion 310 via a plurality of connection reinforcements 325 in conjunction with corresponding retaining rings 316 disposed on bracket assembly 340. Specifically, each connection reinforcement 325 is fixedly or detachably connected to roof portion 320 via its end (i.e., first end) 325A and extends from roof portion 320.A pair of snaps 326 are provided on the end (i.e., the second end) 325B of each connection reinforcement member 325. The snaps 326 include corresponding, mating snaps 326A and 326B. The bracket assembly 340 includes a first frame 341 surrounding the outer periphery of the upper periphery of the box portion 310, a first frame 343 disposed on the outer bottom of the box portion 310, and at least one connecting frame 342. The connecting frame 342 is connected to the exterior of the box portion 310, connecting between the first frame 341 and the second frame 343. The contours of the first frame 341 and the connecting frame 342 correspond to those of the box portion 310, thereby providing a relatively stable and secure support for the box portion 310 when connected to the box portion 310. The second frame 343 is connected to the exterior of the box portion 310 and allows the carrier 300 to be attached to a base mounted in a vehicle. Furthermore, the shelf assembly 340 is provided with a plurality of U-shaped retaining rings 316. These retaining rings 316 are attached to the first frame 341, preferably at the location where the connecting frame 342 connects to the first frame 341. These retaining rings 316 form openings for receiving corresponding connecting reinforcements 325 extending from the ceiling portion 320. As shown in Figures 3A and 3B, the connecting reinforcements 325 extending from the ceiling portion 320 can each have their ends 325B pass through the openings formed by the corresponding retaining rings 316 and the second frame 341, then be inverted toward the ceiling portion 320, allowing snaps 326B to connect with snaps 326A by pressing or snapping. This improves the connection between the ceiling portion 320 and the box portion 310. Alternatively, the retaining rings 316 can have other shapes and configurations besides U-rings, including but not limited to D-rings, V-rings, and O-rings, with or without openings. In this embodiment, four connection reinforcements 325 are symmetrically arranged on the roof portion 320, with two connection reinforcements 325 positioned on each long side. This provides a reinforced, stable, and uniform connection between the roof portion 320 and the box portion 310, but the present invention is not limited thereto. In alternative embodiments, the number and location of the connection reinforcements may vary from the embodiment shown in Figures 3A and 3B , depending on the actual design and application of the vehicle. Referring to Figure 4 , a side view of a vehicle 400 of a travel device according to an exemplary embodiment of the present invention is schematically shown. The travel device includes a vehicle 400 for accommodating an animal.Carrier 400 has a similar structure and construction to carrier 200 shown in FIG. Carrier 400 includes a box portion 410, a roof portion 420 detachably attached to box portion 410, handles 430 pivotally and detachably connected to opposite sides of box portion 410, and a bracket assembly 440 connected to box portion 410. In this embodiment, the first frame 441 and the connecting frame 442 of bracket assembly 440 each have contours corresponding to those of box portion 410. When connected to box portion 410, bracket assembly 440 provides a relatively stable and secure support for box portion 410. A second frame 443 is connected to the exterior of box portion 410, allowing carrier 400 to be attached to a base mounted in a vehicle. Roof portion 420 has a lower perimeter 420A. Carrier 400 differs from carrier 200 in FIG. 2 in that the roof portion 420, primarily composed of a one-piece cover, is attached to the box portion 410 solely via connecting reinforcements 425. More specifically, carrier 400 includes four connecting reinforcements 425 symmetrically arranged on the roof portion 420, with two connecting reinforcements positioned on each long side. Connecting reinforcements 425 are fixedly or removably connected to and extend from the roof portion 420 via their ends (i.e., first ends) 425A. Furthermore, the shelf assembly 440 is provided with a plurality of U-shaped retaining rings 416. These retaining rings 416 are attached to the first frame 441, preferably at the location where the connecting frame 442 connects to the first frame 441, forming openings for receiving corresponding connecting reinforcements 425 extending from the roof portion 420. As shown in Figure 4 , each connecting reinforcement 425 extending from the roof portion 420 can be passed through the opening formed by the corresponding retaining ring 416 and the first frame 441, and then inverted toward the roof portion 420, allowing the corresponding snap fastener pairs 426 disposed at the free ends (i.e., the first ends) of the connecting reinforcement 425 to connect with each other by pressing or snapping. This improves the connection between the roof portion 420 and the box portion 410. Referring to Figure 5 , a side view of a carrier 500 of a travel device according to an exemplary embodiment of the present invention is schematically shown. The travel device includes a carrier 500 for accommodating an animal. The carrier 500 has a structure and construction similar to the carrier 200 shown in Figure 2. The carrier 500 includes a box portion 510, a roof portion 520 detachably attached to the box portion 510, handles 530 pivotally and detachably connected to opposite sides of the box portion 510, and a bracket assembly 540 connected to the box portion 510.In this embodiment, the first frame 541 and the connecting frame 542 of the bracket assembly 540 each have contours corresponding to those of the box portion 510. When connected to the box portion 510, they provide relatively stable and secure support for the box portion 510. A second frame 543 is connected to the exterior of the box portion 510, allowing the carrier 500 to be attached to a chassis installed in a vehicle. Similarly, the roof portion 520 is primarily comprised of a one-piece cover and is connected to the box portion 510 at its lower periphery 520A without the use of a zipper as a connecting component. The carrier 500 differs from the carrier 200 of FIG. 2 in that, in this embodiment, the carrier 500 includes four connecting reinforcements 525 symmetrically arranged on the roof portion 520, with two connecting reinforcements 525 positioned on each side. In addition, the bracket assembly 540 is provided with multiple U-shaped retaining rings 516. The retaining rings 516 are attached to the first frame 541, preferably at the location where the connecting frame 542 connects to the first frame 541, forming an opening for receiving corresponding connecting reinforcements 525 extending from the roof portion 520. In this embodiment, the connecting reinforcements 525 can be integrally formed with the roof portion 520. In other words, the four connecting reinforcements 525 in this embodiment form a one-piece structure with the roof portion 520 and are non-detachable therefrom. As shown in FIG5 , each connecting reinforcement 525 extending from the roof portion 520 can be passed through the opening formed by the corresponding retaining ring 516 and the first frame 541, then reversed toward the roof portion 520, allowing the matching and corresponding snap fastener pairs 526 disposed at the free ends of the connecting reinforcements 525 to connect to each other through a press or snap-on method. This improves the connection between the roof portion 520 and the housing portion 510. Please refer to Figures 6A to 6C , which schematically illustrate perspective views of a travel device carrier according to an exemplary embodiment of the present invention. The travel device includes a carrier 600 for accommodating an animal. Carrier 600 has a structure and configuration similar to carrier 300 shown in Figures 3A and 3B . Carrier 600 includes a case portion 610, a roof portion 620 connected to a seat cover 615 and thereby to case portion 310 via a second connecting member 624 (e.g., a zipper), handles 630 pivotally and detachably connected to opposite sides of case portion 610, and a bracket assembly 640 connected to case portion 610.Similarly, the roof portion 620 in this embodiment can include a first (right) cover 621 and a second (left) cover 622. The first (right) cover 621 and the first (left) cover 622 are removably connected to each other via a first connecting member 623 (e.g., a zipper), thereby forming the top yoke portion 620 into a dome shape. The top yoke portion 620 is removably connected to the upper periphery 610A of the box portion 610 at its lower periphery 620A via a second connecting member 624. Similarly, in this embodiment, the first frame 641 and the connecting handle frame 642 of the bracket assembly 640 each have contours corresponding to the contours of the box portion 610. When connected to the box portion 610, they can support the box portion 610 in a relatively stable and secure manner. The first frame 643 is connected to the exterior of the box portion 610 and allows the carrier 600 to be attached to a base mounted in a vehicle. Carrier 600 differs from carrier 300 of Figures 3A and 3B in that, in this embodiment, connection reinforcements 625 extending from the roof portion 620 of carrier 600 can be attached to the box portion 610 without requiring any additional connection means (e.g., snaps). The first frame 641 of the bracket assembly 640 is formed with recesses 616 (as shown in Figure 6C ) at locations toward which corresponding connection reinforcements 625 extend, replacing the U-shaped retaining rings attached to the first frame 641. Each connection reinforcement 625 can be formed with a rigid, hook-shaped end. In other words, each connection reinforcement 625 can be fixedly or removably connected to the roof portion 620 at one end (i.e., the first end) 625A, and can have its other end (i.e., the second end) 625B formed as a rigid, hook-shaped end, which is received and engaged by a corresponding recess 616 on the second frame 641 of the bracket assembly 640. In this way, the connection between the roof portion 620 and the box portion 610 can be improved by engaging the connection reinforcement members 625 with the respective recesses 616, without the need for any additional fasteners or connectors, thereby providing a relatively simplified configuration for the carrier 600. Referring to FIG7 , a side view of a carrier 700 of a travel device according to an exemplary embodiment of the present invention is schematically shown. The travel device includes a carrier 700 for accommodating an animal. The carrier 700 has a structure and configuration similar to the carrier 500 shown in FIG5 . The carrier 700 includes a box portion 710, a roof portion 720 detachably attached to the box portion 710, handles 730 pivotally and detachably connected to opposite sides of the box portion 710, and a bracket assembly 740 connected to the box portion 710.In this embodiment, the first frame 741 and the connecting frame 742 of the bracket assembly 740 each have contours corresponding to those of the box portion 710. When connected to the box portion 710, they support the box portion 710 in a relatively stable and secure manner. A first frame 743 is connected to the exterior of the box portion 710. This allows the carrier 700 to be attached to a vehicle-mounted chassis. Similarly, the roof portion 720 is primarily comprised of a one-piece cover and is connected to the box portion 710 at its lower periphery 720A, without the use of a zipper as a connecting component. The carrier 700 differs from the carrier 500 of FIG. 5 in that, in this embodiment, a connecting reinforcement 725 extending from the roof portion 720 of the carrier 700 can be attached to the box portion 710 without requiring any additional connecting means (e.g., snaps). In this embodiment, the connecting reinforcement 725 can be integral with the roof portion 720. That is, the four connection reinforcements 725 in this embodiment form an integral structure with the roof portion 720 and are not removable therefrom. Similar to the carrier 600 of Figures 6A to 6C , the first frame 741 of the bracket assembly 740 is formed with recesses (not shown in this figure) at locations toward which the corresponding connection reinforcements 725 extend. Each connection reinforcement 725 can be formed with a rigid hook-shaped end 725B that can be received and engaged by a corresponding recess on the first frame 741 of the bracket assembly 740, instead of passing through the opening formed by the U-shaped retaining ring attached to the first frame 741. This improves the connection between the roof portion 720 and the box portion 710 by engaging the connection reinforcements 725 with the respective recesses, eliminating the need for any additional fasteners or connectors, thereby providing a relatively simplified configuration for the carrier 700. Referring to Figures 8A to 8C , a travel device carrier 800 according to an exemplary embodiment of the present invention is schematically illustrated. 8A and 8B show perspective views of a connection reinforcement member 825 attached to and detached from a box portion 810 of a carrier 800, and FIG8C schematically illustrates the structure of the connection reinforcement member and the structure of a guide groove formed on a first frame 841. The travel device includes a carrier 800 for accommodating an animal therein.The carrier 800 has a structure and configuration similar to the carrier 600 shown in Figures 6A to 6C. The carrier 800 includes a box portion 810, a roof portion 820 attached to a seat cover 815 and thereby to the box portion 810 via a second connecting member 824 (e.g., a zipper), a handle 830 pivotally and detachably connected to opposite sides of the box portion 810, and a bracket assembly 840 connected to the box portion 810. Similarly, the roof portion 820 in this embodiment may include a first (right) cover 821 and a second (left) cover 822. The first (right) cover 821 and the second (left) cover 822 are detachably connected to each other via a first connecting member 823 (e.g., a zipper), thereby forming the roof portion 820 into a dome shape. The roof portion 820 is detachably connected at its lower periphery 820A to the upper periphery 810A of the box portion 810 via a first connecting member 824. Similarly, in this embodiment, the first frame 841 and the connecting frame 842 of the bracket assembly 840 each have contours corresponding to those of the box portion 810. When connected to the box portion 810, they can support the box portion 810 in a relatively stable and secure manner. A second frame 843 is connected to the exterior of the box portion 810. This allows the carrier 800 to be attached to a base mounted in a vehicle. The carrier 800 differs from the carrier 600 of Figures 6A to 6C in that, in this embodiment, the first frame 841 of the bracket assembly 840 is formed with guide grooves (also referred to as first guide grooves) 816, which are used to receive, guide, and position corresponding connecting reinforcement members 825. More specifically, as shown in Figures 8B and 8C , guide groove 816 is provided on the upper side of second frame 841 and may be formed to include a first (receiving) portion 816A, a second (guiding) portion 816B, and a third (limiting) portion 816C. The first (receiving) portion 816A and the second (guiding) portion 816B are open to receive the engaging end (i.e., the second end) 825B of the connecting reinforcement 825 and guide the body of the connecting reinforcement 825. The connecting reinforcement 825 is formed with a sleeve-shaped portion 825C on the engaging end 825B, which is used to accommodate a guide rod (also referred to as a first guide rod) 826 therein. The shape and size of the guide rod 826 correspond to the limiting portion 816C of the guide groove 816 , so that the engaging end 825B with the guide rod 826 can be guided in the limiting portion 816C of the guide groove 816 to move smoothly and be limited.In this embodiment, as shown in the enlarged view of FIG8B , the first receiving portion 816A of the guide slot 816 can be tapered, for example, from right to left (or vice versa). Specifically, the first portion 816A is formed with a starting (e.g., right) end and a tapered (e.g., left) end. The starting end is sized and shaped to receive the engagement end 825B having the guide rod 826. The tapered (e.g., left) end is spatially connected to the second (guide) portion 816B. The size and shape of the first (guide) portion 816B corresponds to the thickness of the body of the connection reinforcement 825. This allows only the body of the connection reinforcement 825 to move into the second portion 816B of the guide slot 816. The engaging end 825B of the guide rod 826 is received by the first (receiving) portion 816A and moves in direction C until it fully enters the second (guiding) portion 816B of the guide slot 816. The guide rod 826 is then restrained within the third (restricting) portion 816C and prevented from exiting the guide slot 816 via the second (guiding) portion 816B. Referring to Figures 8A and 8C , the connection between the connecting reinforcement 825 and the box portion 810 is illustrated. The carrier 800 is provided with four connecting reinforcements 825, each of which is connected to and extends from the roof portion 820 via an end (i.e., a first end) 825A. As described, in this embodiment, the first frame 841 of the bracket assembly 840 includes a guide slot 816 formed by a first (receiving) portion 816A (which tapers from right to left), a second (guiding) portion 816B, and a third (restricting) portion 816C. Each connection reinforcement member 825 can be received and positioned in the guide slot 816 by loading the engagement end 825B into the right (starting) end of the first portion 816A along direction C shown in FIG8B , positioning the engagement end 825B with the guide rod 826 into the third portion 816C, and then slightly moving the engagement end 825B toward the left (tapered) end of the first portion 816A (i.e., along direction C shown in FIG8B ). Once the connection reinforcement member 825 is received and positioned, the engagement end 825B can be retained in the second portion 816C and prevented from moving out of the guide slot 816. Therefore, the connection reinforcement 825 is coupled to the first frame 841 of the bracket assembly 840, and thus coupled to the box portion 810, as shown in FIG. 8A.In this way, the connection between the roof portion 820 and the box portion 810 can be improved by engaging the connection reinforcement members 825 with the respective guide grooves 816, without the need for any additional fasteners or connectors. This provides a relatively simplified configuration for the carrier 800 while still achieving a relatively robust connection compared to the previous embodiment. Referring to FIG. 9 , a perspective view of a travel device carrier 900 is schematically shown according to an exemplary embodiment of the present invention. The travel device includes a carrier 900 for accommodating an animal. The carrier 900 has a structure and configuration similar to the carrier 300 shown in FIG. 3A and FIG. The carrier 900 includes a box portion 910, a roof portion 920 attached to a seat cover 915 and thereby to the box portion 910 via a second connection member 924 (e.g., a zipper), handles 930 pivotally and detachably connected to opposite sides of the box portion 910, and a bracket assembly 940 connected to the box portion 910. Similarly, the roof portion 920 in this embodiment may include a first (right) cover 921 and a second (left) cover 922. The first (right) cover 921 and the first (left) cover 922 are removably connected to each other via a first connecting member 923 (e.g., a zipper), thereby forming the roof portion 920 into a dome shape. The roof portion 920 is removably connected to the upper periphery 910A of the box portion 910 at its lower periphery 920A via a second connecting member 924. Similarly, in this embodiment, the first frame 941 and the connecting frame 942 of the bracket assembly 940 each have contours corresponding to the contours of the box portion 910. When connected to the box portion 910, they can support the box portion 910 in a relatively stable and secure manner. The first frame 943 is connected to the exterior of the box portion 910, allowing the carrier 900 to be attached to a base mounted in a vehicle. Carrier 900 differs from carrier 300 of Figures 3A and 3B in that, in this embodiment, the connection between roof portion 920 and box portion 910 is achieved through respective connecting straps provided on roof portion 920 and bracket assembly 940. Specifically, carrier 900 includes four first connecting straps 925 serving as connecting reinforcements. An end 925A of each first connecting strap 925 (i.e., a first end of the connecting reinforcement) is connected to roof portion 920, and a free end 925B of each first connecting strap 925 (i.e., a second end of the connecting reinforcement) is connected to a connector 926, such as a hook or a buckle.The carrier 900 also includes two second connecting straps 917 attached to the bracket assembly 940. Each second connecting strap 917 includes two free ends, each of which is connected to a retaining ring 916, such as a D-ring. The retaining ring 916 is exposed to allow each first connecting strap 925 to be connected to the retaining ring 916 via a respective connector 926. In other words, the free ends of the first connecting straps 917 are detachably connected to the second ends of the first connecting straps 925. Thus, by connecting the four first connecting straps 925 to the respective retaining rings 916 on the bracket assembly 940, the connection between the roof portion 920 and the box portion 910 of the carrier 900 can be further improved. It is worth noting that the first connecting straps 925 (each of which has a connector 926 on its free end 925B) can be replaced by the connection reinforcement 325 shown in Figures 3A and 3B (or vice versa). The second connecting strap 917 (each having a retaining ring 916 at its two free ends) can also be replaced by the U-shaped retaining ring 316 connected to the first frame 341 shown in Figures 3A and 3B . In other words, by combining the methods shown in different embodiments of the present invention, the method of tightly connecting the roof portion and the box portion of the carrier can be modified. Referring to Figure 10 , a side view of a carrier 1000 for a travel device according to an exemplary embodiment of the present invention is schematically shown. The travel device includes a carrier 1000 for accommodating an animal. The carrier 1000 has a structure and construction similar to the carrier 400 shown in Figure 4 . The carrier 1000 includes a box portion 1010, a roof portion 1020 detachably attached to the box portion 1010, handles 1030 pivotally and detachably connected to opposite sides of the box portion 1010, and a bracket assembly 1040 connected to the box portion 1010. In this embodiment, the first frame 1041 and the connecting frame 1042 of the bracket assembly 1040 each have contours corresponding to those of the box portion 1010. When connected to the box portion 1010, they can support the box portion 1010 in a relatively stable and secure manner. The second frame 1043 is connected to the exterior of the box portion 1010, allowing the vehicle 1000 to be attached to a base mounted in the vehicle. Similarly, the roof portion 1020 can be removably connected to the box portion 1010 solely via the connecting reinforcement 1025.Carrier 1000 differs from carrier 400 in FIG. 4 in that carrier 1000 includes four first connecting straps 1025 as connection reinforcements. Each first connecting strap 1025 is connected to roof portion 1020 via an end (i.e., first end) 1025A. Each first connecting strap 1025 is connected to a connector 1026 (e.g., a hook or fastener) at its free end (i.e., second end) 1025B. Carrier 1000 also includes two second connecting straps 1017, which are attached to bracket assembly 1040. Each second connecting strap 1017 has two free ends, each of which is connected to a retaining ring 1016. In this embodiment, the connection between roof portion 1020 and box portion 1010 of carrier 1000 can be further improved in a manner similar to carrier 900, namely, by connecting the four first connecting straps 1025 to respective retaining rings 1016 on bracket assembly 1040. Refer to Figures 11A through 11D, which are perspective views of a bracket assembly according to various embodiments of the present invention, configured for use with the carrier shown in Figures 9 and 10. A first frame with integrated connecting straps and retaining rings is shown. Referring to Figure HA, bracket assembly 1140A shown includes a first frame 1141A surrounding the outer periphery of a box portion (not shown), a second frame 1143A disposed on the outer bottom of the box portion (not shown), and at least one (two in this embodiment) connecting frame 1142A. Connecting frame 1142A is connected to the outer periphery of the box portion (not shown), connecting between first frame 1141A and second frame 1143A. The contours of first frame 1141A and connecting frame 1142A correspond to the contours of the box portion, thereby providing a relatively stable and secure support for the box portion when connected thereto. A second frame H43A is connected to the exterior of the box portion. This second frame 1143A allows a vehicle (such as, but not limited to, vehicle 900 shown in FIG. 9 or vehicle 1000 shown in FIG. 10 ) to be attached to a chassis mounted in a vehicle. In this embodiment, each of two second connecting straps 1117A is attached to a respective connecting frame 1142A at a surface facing the exterior bottom of the vehicle box portion, using, for example, two fasteners 1145A. Each second connecting strap 1117A extends along the connecting frame 1142A, with its two free ends extending beyond the bracket assembly H40A and emerging at the location where the connecting frame 1142A connects to the first frame 1141A. The free ends of the second connecting straps pass between the bracket assembly and the box portion. More specifically, the free ends of each second connecting strap 1117A pass between the box portion and the first frame 1141A.Each second connecting strap 1117A includes two retaining rings 1116A connected at its free ends to allow for connection to a corresponding second connecting strap extending from the roof portion. Referring to Figure 11B , the illustrated bracket assembly 1140B has a similar structure and construction to bracket assembly 1140A, including a first frame 1141B, a second frame 1143B, and at least one (two in this embodiment) connecting frame 1142B. When connected to the box portion, bracket assembly 1140B provides a relatively stable and rigid support for the box portion, allowing a vehicle (such as, but not limited to, vehicle 900 shown in Figure 9 or vehicle 1000 shown in Figure 10 ) to be attached to a vehicle-mounted base. In this embodiment, connecting frame 1142B is hollow, defining an interior space (also referred to as a hollow channel) through which each second connecting strap H17B passes. Each second connecting strap 1117B extends along the connecting frame 1142B within its interior space (i.e., along the hollow passage) and is attached to the interior surface of its respective connecting frame H42B via, for example, two fasteners 1145B. Each second connecting strap 1117B extends along the connecting frame 1142B, with its two free ends extending beyond the bracket assembly 1140B and emerging at the location where the connecting frame 1142B connects to the first frame 1141B (i.e., emerging from the ends of the hollow passage). Similarly, each second connecting strap 1117B includes two retaining rings 1116B connected at its free ends to allow connection to a corresponding first connecting strap extending from the ceiling portion. Referring to Figures 11C and 11D , the illustrated bracket assembly 1140C has a similar structure and construction to bracket assemblies 1140A and 1140B, including a first frame 1141C, a second frame 1143C, and at least one (two in this embodiment) connecting frame 1142C. When connected to a box portion, bracket assembly 1140C provides a relatively stable and rigid support for the box portion, allowing a carrier (such as, but not limited to, carrier 900 shown in Figure 9 or carrier 1000 shown in Figure 10 ) to be attached to a base mounted in a vehicle. In this embodiment, each second connecting strap 1117C can be formed to have a receiving slot including a first portion 1118C and a second portion 1119C, the receiving slot being open to receive a guide rod (also referred to as a second guide rod), such as guide rod 1118D. The second connecting strap 1117C includes a guide rod 1118D saddled therein, for example, by being loaded into the first portion 1118C of the second connecting strap 1117C by pressing the guide rod 1118D through the second portion 1119C.Furthermore, each connecting frame 1142C can be formed with a guide slot (also referred to as a second guide slot) comprising a first (guiding) portion H147C and a second (receiving) portion 1148C. Preferably, the size and shape of the first (guiding) portion 1147C correspond to the guide rod H18D, allowing the guide rod 1118D to be received therein and guided therein. In this embodiment, the second connecting strap H17C can be attached to the corresponding connecting frame 1142C by being partially embedded in the corresponding connecting frame 1142C, with the guide rod 1118D extending along and positioned within the first portion 1147C of the connecting frame 1142C. Optionally, the second connecting strap 1117C can be further secured to the corresponding connecting frame 1142C using, for example, two additional fasteners 1145C. Each second connecting strap 1117C extends along the connecting frame 1142C, with its two free ends extending beyond the bracket assembly 1140C and protruding where the connecting frame 1142C connects to the first frame 1141C. Similarly, each second connecting strap 1117C includes two retaining rings (not shown) connected to its two free ends to allow connection to the corresponding first connecting strap extending from the roof portion. In one embodiment, a guide rod 1118D can be inserted into the first portion 1118C of the second connecting strap 1117C. One end of the first portion 1118C, including the guide rod 1118D, is inserted into the first portion 1147C through an opening at one end of the first portion 1147C of the connecting frame 1142C. The guide rod 1118D and the first portion 1118C then slide along the first portion 1147C to form a U-shaped configuration consistent with the connecting frame 1142C. Referring to FIG. 12 , a side view of a travel device carrier 1200 according to an exemplary embodiment of the present invention is schematically shown. Carrier 1200 is used to house an animal, and its structure and configuration are similar to those of the aforementioned embodiments. Carrier 1200 includes a case portion 1210, a roof portion 1220 attached to a seat cover 1215 and, in turn, to case portion 1210 via a second connecting member 1224 (e.g., a zipper), handles 1230 pivotally and removably connected to opposite sides of case portion 1210, and a support assembly 1240 connected to case portion 1210.Similarly, the roof portion 1220 in this embodiment may include a first (right) cover portion 1221 and a second (left) cover portion 1222. The first (right) cover portion 1221 and the second (left) cover portion 1222 are detachably connected to each other via a first connecting member 1223 (e.g., a zipper), thereby forming a dome-shaped roof portion 1220. The roof portion 1220 is detachably connected to the upper periphery 1210A of the case portion 1210 at its lower periphery 1220A via a second connecting member 1224. In this embodiment, handles 1230 are pivotally and detachably connected to opposite sides of the case portion 1210 via pivots 1231. The carrier 1200 also includes guide members 1235 detachably connected to the carrier 1200. The guide members 1235 are located at positions corresponding to the pivots 1231 and are used to secure a safety belt 1260 passing therethrough, thereby providing additional support for the carrier 1200. Alternatively, the guide member 1235 can be attached to the handle 1230 or the case portion 1210 at a predetermined location. With the support of the seat belt, the carrier 1200 can be relatively stably and safely supported when installed in a vehicle. Figures 13A to 13E / K schematically illustrate different views of a travel device 13 according to an exemplary embodiment of the present invention. As shown in Figures 13A and 13B, the travel device 13 includes a carrier 1300 and a base 1390. The carrier 1300 can be constructed in a manner similar to the previous embodiment, including a case portion 1310 and handles 1330 pivotally and detachably connected to opposite sides of the case portion 1310. In this embodiment, the vehicle 1300 further includes a pair of connecting rods 1314 connected to the outer bottom surface of the housing portion 1310 (i.e., the outer bottom portion of the vehicle 1300). The vehicle 1300 can be mounted to a base 1390 via the connecting rods 1314. The base 1390 can be secured to a vehicle seat, for example. In this embodiment, the housing portion 1310 includes a pair of recessed portions 1312 formed on the outer bottom portion 1311, each recessed portion 1312 being configured to receive the pair of connecting rods 1314 therein, and an activation portion (or actuation portion) 1313 located in the center of the outer bottom portion 1311. Preferably, the connecting rods 1314 are U-shaped, pivotally connected to the housing portion 1310 at their respective ends within their respective recessed portions 1312.Referring now to Figures 13B and 13C , the base 1390 includes a pair of connecting recesses 1392 corresponding to the pair of connecting rods 1314 of the carrier 1300. On the inner surface of each connecting recess 1392, the base 1390 has a pair of exposed connecting members 1394. Alternatively, only one connecting member 1394 may be provided in each connecting recess 1392. Connecting member 1394 may be, for example, a hook or claw, and may have an opening to allow the connecting rod 1314 to pass through and be installed therein. Each connecting recess 1392 may have an inclined surface for guiding its respective connecting rod 1314. On the top surface 1391 ±, i.e., the surface in contact with the outer bottom 1311 of the housing 1310, the base 1390 includes a centrally located actuating portion 1393. This actuating portion 1393 corresponds to the actuating portion 1313 located in the center of the outer bottom 1311 of the carrier 1300. Preferably, the actuating portion 1313 located in the center of the outer bottom 1311 of the carrier 1300 can be recessed to cover a trigger mechanism for the connecting rod 1314. The actuating portion 1393 located in the center of the top surface 1391 of the base 1390 can be a post. Please refer to Figures 13D and 13E, which respectively illustrate the separation and connection of the carrier 1300 and base 1390 in this embodiment. As described, the carrier 1300 can be removably connected to the base 1390 via a pair of connecting rods 1314 connected to the outer bottom surface of the housing 1310. The connecting rods 1314 can be received in respective recesses 1312 on the outer bottom 1311 of the carrier 1300, as shown in FIG13D . When the carrier 1300 is positioned on the base 1390 for connection, a trigger mechanism inside the carrier's actuating portion 1313 is pressed and triggered by the actuating portion 1393, causing the two connecting rods 1314 to pivot out of their respective recesses 1312. The connecting rods 1314 are guided to move along the inclination of the corresponding connecting recesses 1392, passing through the openings and entering into their respective connecting members 1394, where they engage as shown in FIG13E . Thus, through the engagement of the connecting rods 1314 with the connecting members 1394, the carrier 1300 can be stably attached to the base 1390. Referring to FIG14A and FIG14B , different views of a travel device 14 according to an exemplary embodiment of the present invention are schematically shown. The travel device 14 includes the carrier 1400 and the base 1490.The carrier 1400 can be constructed in a manner similar to the previous embodiment, including a case portion 1410, handles 1430 pivotally and detachably connected to opposite sides of the case portion 1410, and a shelf assembly 1440 connected to the case portion 1410. In this embodiment, the shelf assembly 1440 includes a first frame 1441, a second frame 1443 connected to the outer bottom of the case portion 1410, and a connecting frame 1442 connected between the first frame 1441 and the second frame 1443 and connected to the case portion 1410. Similarly, the first frame 1441 and the connecting frame 1442 of the shelf assembly 1440 each have a profile corresponding to that of the case portion 1410. When connected to the case portion 1410, they are configured to support the case portion 1410 in a relatively stable and secure manner. First, the frame 1443 is connected to the exterior of the box portion 1410 to allow the carrier 1400 to be attached thereto to the base 1490. In this embodiment, the base 1490 includes a plurality of connecting recesses 1492 for receiving and connecting the second frame 1443 of the carrier 1400. More specifically, the base 1490 may include a pair of connecting recesses 1492 corresponding to each of the two long sides of the second frame 1443 of the carrier 1400 (i.e., one connecting recess 1492 for each long side), or may include a pair of connecting recesses 1492 corresponding to each of the two long sides of the second frame 1443 of the carrier 1400 (i.e., one pair of connecting recesses 1492 for each long side). On the inner surface of each connecting recess 1492, the base 1490 includes two externally exposed connecting members 1494, one of which corresponds to one of the two long sides of the second frame 1443. The connecting member 1494 can be a hook or claw, etc., and has an opening to allow the two long sides of the second frame 1443 to pass through the opening and be loaded therein. A pair of connecting posts 1444 are provided on each of the two long sides of the second frame 1443. A trigger mechanism disposed within the second frame 1443 can cause the connecting posts 1444 to extend from and retract into the second frame 1443. In other words, in this embodiment, when the long sides of the second frame 1443 are loaded into the connecting member 1494 through the opening, the connecting posts 1444 extend from the second frame 1443 to engage with the corresponding connecting member 1494, allowing the vehicle 1400 to be stably attached to the base 1490. Referring to Figures 15A and 15B, different views of a travel device 15 according to an exemplary embodiment of the present invention are schematically shown.The travel device 15 includes a carrier 1500 and a base 1590. The carrier 1500 can be constructed in a manner similar to the previous embodiment, including a case portion 1510, handles 1530 pivotally and removably connected to opposite sides of the case portion 1510, and a stand assembly 1540 connected to the case portion 1510. In this embodiment, the stand assembly 1540 includes a first frame 1541, a second frame 1543 connected to the outer bottom of the case portion 1510, and a connecting frame 1542 connected between the first frame 1541 and the second frame 1543 and connected to the case portion 1510. Similarly, the first frame 1541 and the connecting frame 1542 of the stand assembly 1540 each have a profile corresponding to that of the case portion 1510. When connected to the case portion 1510, they provide a relatively stable and secure support for the case portion 1510. The second frame 1543 is connected to the exterior of the housing 1510, allowing the carrier 1500 to be attached thereto to the base 1590. In this embodiment, the base 1590 has a similar structure and construction to the base 1490. The base 1590 includes a connecting recess 1592 for accommodating the two long sides of the first frame 1543, and connecting members 1594 exposed on the inner surface of the connecting recess 1592. Similarly, the connecting members 1594 can be hooks or claws, etc., and have a base portion and an opening portion. The base portion is fixed to the inner side of the respective connecting recess 1592, and the opening portion allows the two long sides of the second frame 1543 to pass through and be loaded therein. In this embodiment, each long side of the second frame 1543 may include a pair of retaining rings 1544, located at positions corresponding to the respective connecting members 1594. Preferably, the size and shape of the connecting member 1594 and its opening allow the second frame 1543 to be loaded therein and moved in the longitudinal direction A. When the stop ring 1544 is "snapped" by the connecting member 1594 and thereby engaged with the connecting member 1594, the second handle 1543 stops moving and becomes fixed therein, allowing the carrier 1500 to be stably attached to the base 1590. More specifically, to achieve the desired engagement position, the second frame 1543 is loaded onto the corresponding connecting recesses 1592, moved in direction B toward the base of the connecting member 1594, and then moved in direction A, causing the stop ring 1544 to abut against the connecting member 1594 and be locked in place. The carrier 1500 can be relatively securely attached to the base 1590 via the stop ring 1544 and the connecting member 1594.16A to 16E schematically illustrate various views of a travel device 16 according to an exemplary embodiment of the present invention. The travel device 16 includes a carrier 1600 and a base 1690. The carrier 1600 can be constructed in a manner similar to the previously described embodiments, including a case portion 1610, handles 1630 pivotally and removably connected to opposite sides of the case portion 1610, and a stand assembly 1640 connected to the case portion 1610. In this embodiment, the stand assembly 1640 includes a first frame 1641, a second frame 1643 connected to the outer bottom of the case portion 1610, and a connecting frame 1642 connected between the first and second frames 1641, 1643 and connected to the case portion 1610. Similarly, the second frame 1641 and connecting frame 1642 of the bracket assembly 1640 are configured to conform to the contours of the housing portion 1610. When connected to the housing portion 1610, they provide a relatively stable and secure support for the housing portion 1610. The first frame 1643 is connected to the exterior of the housing portion 1610, allowing the carrier 1600 to be attached to the base 1690 therethrough. As shown in Figures 16B and 16C, in this embodiment, the base 1690 includes two guide slots 1692 extending parallel to the longitudinal direction A of the carrier 1600. The guide slots 1692 are configured to receive a portion of the second frame 1643. On the inner surfaces of the guide slots 1692, the base 1690 includes connecting members 1694 that can be activated to extend and retract from the guide slots 1692. The connecting members 1694 may be hooks or claws. In this embodiment, each long side of the second frame 1643 may include a pair of guide members 1644, located outside the positions corresponding to the respective connecting members 1694. Preferably, the guide members 1644 may be wedge-shaped blocks, and the profile of the guide grooves 1692 may correspond to the profile of the guide members 1644, so that the guide members 1644 can be accommodated therein and move in a direction parallel to the longitudinal direction A of the carrier 1600. Referring to Figures 16B, 16D, and 16E, when the carrier 1600 needs to be attached to the base 1690, the carrier 1600 can be pushed toward the base 1690 along its longitudinal direction A. As the carrier 1600 moves in this direction, the long sides of the second frame 1643 and the guide members 1644 are guided and moved in the guide grooves 1692. The connecting member 1694 may initially be retracted from the guide slot 1692 , whereby the long side of the second frame 1643 and the guide member 1644 can smoothly move within the guide slot 1692 .When the guide member 1644 moves to contact the actuator 1693 disposed at one end of the guide slot 1692, the guide member 1644 triggers the connecting member 1694 to extend from the guide slot 1692 (as shown in FIG16E ). This allows the long sides of the second frame 1643 to be "locked" in place by the connecting member 1694, allowing the carrier 1600 to be stably attached to the base 1690. Referring to FIG17A through FIG17E , various views of a travel device 17 according to a preferred embodiment of the present invention are schematically illustrated. As shown in FIG17A and FIG17B , the travel device 17 includes a carrier 1700 and a base 1790. The carrier 1700 can be constructed in a manner similar to the previous embodiments, including a case portion 1710 and handles 1730 pivotally and detachably connected to opposite sides of the case portion 1710. As shown in Figures 17B to 17D , the base 1790 in this embodiment can be designed as a drawer-like structure. More specifically, the base 1790 is primarily composed of two opposing longitudinal sidewalls 1790B and 1790D, defining an interior cavity 1792 for accommodating the carrier 1700 and leaving a side opening 1790C for loading the carrier 1700. At the inner bottom of the base 1790 (i.e., toward the bottom of the carrier 1700), the base 1790 is provided with at least one (preferably four in this embodiment) connecting member 1795. These connecting members 1795 can be extended and retracted through respective openings 1794 formed on the bottom of the base 1790. Preferably, the extension and retraction of the connecting members 1795 can be triggered by an actuator 1793 disposed on the inner side of the lateral sidewall 1790A. Referring to FIG. 17E , when it is desired to attach carrier 1700 to base 1790, carrier 1700 can be pushed longitudinally toward base 1790. Specifically, carrier 1700 can be pushed in direction D toward base 1790, allowing carrier 1700 to move in this direction within interior space 1792 defined by transverse sidewalls 1790A, longitudinal sidewalls 1790B, and longitudinal sidewalls 1790D. Connecting members 1795 can initially be retracted from the bottom of base 1790, allowing carrier 1700 to move smoothly within interior space 1792. When carrier 1700 is positioned so that actuators 1793 disposed inside transverse sidewalls 1790 are contacted and pressed by case portion 1710 of carrier 1700, connecting members 1795 are triggered to extend from the bottom of base 1790 through respective openings 1794 (as shown in FIG. 17D ).The connecting member 1795 extending from the opening 1794* can be snapped into place with the connecting recess 1718 formed on the outer bottom 1710A of the housing portion 1710, allowing the carrier 1700 to be stably attached to the base 1790. In this embodiment, the connecting recess 1718 formed on the outer bottom 1710A of the base 1790 can be covered by an additional reinforcing plate (not shown) made of metal or a metallic material to prevent damage to the connecting recess 1718 from repeated engagement and disengagement of the connecting member 1795. This can extend the service life of the base 1790. In the present invention, the carrier is attached to or detached from the base by triggering an attachment mechanism, which can be, for example, but not limited to, configured on the carrier. The attachment mechanism according to the present invention can be configured as, for example, but not limited to, a connecting rod and a connecting recess with a connecting member, a connecting column and a connecting member, a retaining ring on a bracket assembly and a connecting recess with a connecting member, a guide member and a guide groove with a connecting member, or a connecting recess and a connecting member. Alternatively, the attachment mechanism may employ configurations other than those described above. For ease of understanding, arrows L are used in Figures 18 to 62 to indicate the longitudinal direction, and arrows T are used to indicate the transverse direction. The directional terms "longitudinal" and "transverse" are used solely to clarify the description of the embodiments of the present invention and are not intended to unduly limit the scope of protection of the present invention. Figure 18 schematically illustrates a perspective view of a carrier A1000 provided in some embodiments of the present invention. Carrier A1000 may be, but is not limited to, a pet carrier. As shown in Figure 18, carrier A1000 includes a roof assembly (also referred to as a roof portion) A100 and a container body A200. The roof assembly A100 is connected to the container body A200 and is in a fully extended state. Figure 19 illustrates a top view of carrier A1000. Figure 20 illustrates a perspective view of carrier A1000 with the roof assembly A100 and the container body A200 completely separated. Figure 21 shows a perspective view of the roof assembly A100 of the vehicle A1000 connected to the container body A200, but in a partially deployed position, partially opening the top opening 20 of the container body A200. Referring to Figures 18 to 21, when the roof assembly A100 is mounted to the container body A200 and in its fully deployed position (Figure 18), it completely covers the top opening 20 of the container body A200. The roof assembly A100 can also be partially folded, partially opening the top opening 20 of the container body A200 while connected (Figure 21).Additionally, the ceiling assembly A100 can be removed from the accommodating body A200 as needed ( FIG. 20 ). Referring to FIG. 20 and FIG. 21 , when the ceiling assembly A100 is in its fully extended state, it comprises a bottom frame 131 and a ceiling 132 supported by the frame 131. Referring to FIG. 19 , the frame 131 is, for example, generally rectangular. The four sides of the frame 131 correspond to the four sides of the ceiling assembly A100: two opposing first sides 11 and two opposing second sides 12. The two second sides 12 are located between the two first sides 11. The two first sides 11 extend longitudinally, while the two second sides 12 extend transversely. In some embodiments, the longitudinal length of the first sides 11 is greater than the transverse length of the second sides 12. The first sides 11 can be referred to as long sides, while the second sides 12 can be referred to as short sides. The roof 132 may include a tent cloth 1321 and an arched support (not shown) for supporting the tent cloth 1321 in an arched shape. The arched support may be U-shaped, with its ends corresponding to the two first side edges 11. The tent cloth 1321 may have ventilation openings. The ventilation openings may be covered by a mesh structure (e.g., a mesh fabric). In some embodiments, the frame 131 may include two U-shaped frames 102 and two connecting members 101. The two connecting members 101 are located between the two first side edges 11 and between the two U-shaped frames 102. Each connecting member 101 has a pivot axis A12E at each end. Each U-shaped frame 102 is pivotally connected to the two connecting members 101 at its ends via corresponding pivot axes A121. Thus, either U-shaped frame 102 can pivot upward about its corresponding pivot axis A121. The upwardly pivoted U-shaped frame 102 causes the roof 132 to partially fold, thereby opening the top door 20 of the container body A200. Of course, both U-shaped frames 102 can also be pivoted upward about their corresponding pivot axes A121 to open the top opening 20. In some embodiments, the roof 132 has a middle portion 1323 connected between the two connecting members 101. This middle portion 1323 is supported, for example, by an arched support (not shown) positioned between the two connecting members 101, forming an intermediate support portion. Referring to Figures 20 and 21, the container body A200, for example, is a box-shaped structure defining a pet-accommodating space 212. This space 212 has a top opening 20 through which the pet can enter the space 212.In some embodiments, the container body A200 may include a foam housing (also referred to as a housing portion, not shown), a support assembly (not shown) mounted on the exterior of the housing, and a seat fabric 202. The support assembly serves to enhance the structural strength of the housing, and the support assembly may be a metal frame. The seat fabric 202 may, for example, wrap around the exterior of the housing and the support assembly, giving the container body A200 a clean appearance. Of course, the container body A200 may have other embodiments and is not limited to the above examples. For example, in some embodiments, the housing may be made of plastic, in which case the support assembly may be omitted, and the seat fabric 202 may be directly wrapped around the housing. Alternatively, in some embodiments, the housing may be made of plastic, in which case the support assembly and seat fabric 202 may be omitted. Referring to FIG. 20 , the container body A200 is approximately rectangular in shape, comprising two opposing first side surfaces 21 and two opposing second side surfaces 22, with the two second side surfaces 22 located between the two first side surfaces 21. In this embodiment, the first side 21 extends longitudinally, and the second side 22 extends transversely. In some embodiments, the longitudinal length of the first side 21 is greater than the transverse length of the second side 22. The first side 21 can be referred to as the long side, and the first side 22 can be referred to as the short side. Of course, the structure of the container body A200 is not limited to a rectangular parallelepiped. Referring to Figures 18 and 19, when the roof assembly A100 is fully extended, the bottom of the roof assembly A100 can cover the top of the container body A200. The first side 11 of the roof assembly A100 corresponds to the first side 21 of the container body A200, and the second side 12 of the roof assembly A100 corresponds to the second side 22 of the container body A200. Referring to Figures 18 and 20, the roof assembly A100 and the container body A200 are detachably connected via a plurality of connection assemblies A300. The connecting assemblies A300 connecting the ceiling assembly A100 and the container body A200 can also be called connection reinforcements. Some of these connecting assemblies A300 connect between the two first side edges 11 of the ceiling assembly A100 and the two first side surfaces 21 of the container body A200, while some connect between the two second side edges 12 of the ceiling assembly A100 and the two second side surfaces 22 of the container body A200. These multiple connecting assemblies A300 form multiple fixing points at the junction of the ceiling assembly A100 and the container body A200, ensuring a secure connection between the ceiling assembly A100 and the container body A200.In some embodiments, multiple connection assemblies A300 may be symmetrically arranged about the longitudinal center plane M1-M1 of the container body A200, and may also be symmetrically arranged about the transverse center plane M2-M2 of the container body A200. Referring to Figures 19 and 20, in some embodiments, the number of connection assemblies A300 located between the first side 11 and the second side 21 is greater than the number of connection assemblies A300 located between the first side 12 and the first side 22. Among the multiple connection assemblies A300 located between the first side 11 and the first side 21, the central connection assemblies A300 may be closer to each pivot axis A121, while the connection assemblies A300 located at the longitudinal ends are farther away from each pivot axis A121. In some embodiments, the central connection assemblies A300 correspond to the positions of adjacent pivot axes A121. Referring to Figure 20, an exemplary embodiment of the connection assemblies A300 is shown in this embodiment. The connection assembly A300 includes a first connector 31 connected to the roof assembly A100 and a second connector 32 connected to the housing body A200 (and thus directly or indirectly connected to the housing body A200). The first connector 31 and the second connector 32 are detachably connected. For example, one of the first connector 31 and the second connector 32 is a male buckle, and the other is a female buckle, with the male buckle removably inserting into the female buckle. In this embodiment, the first connector 31 is a male buckle and is connected to the awning fabric 1321, for example, via webbing 301. Correspondingly, the first connector 32 is a female buckle and is connected to the seat fabric 202, for example, via webbing 302. Of course, the embodiments of the connection assembly A300 are not limited to the examples above; any suitable connection structure may be employed. Figures 22 to 29 illustrate some previous embodiments of the connection assembly A300. Figures 22 and 23 show perspective views of an alternative embodiment of a connecting assembly A300. In Figure 22, the first connecting member 31 and the second connecting member 32 are connected, while in Figure 23, the first connecting member 31 and the second connecting member 32 are separated. One of the first connecting member 31 and the second connecting member 32 can be a connecting buckle, and the other can be a buckle ring. The connecting buckle can be hooked to the buckle ring. More specifically, the first connecting member 31 is, for example, a connecting buckle, and the second connecting member 32 is a buckle ring. The connecting buckle includes a connecting ring 311, a pivot 312, a hook 313, and a locking arm 314. The connecting ring 311 is connected to the webbing 301, which can be connected to the awning 1321. The hook 313 is pivotally connected to the connecting ring 311 via a pivot 312 and has a mounting opening 3130.The locking arm 314 is connected to the hook body 313 and can open or close the mounting hole 3130. The buckle is connected to the webbing 302, which can be connected to the seat fabric 202. The buckle can enter the hook body 313 through the mounting hole 3130 to hook with the hook body 313. Figures 24 and 25 show perspective views of another alternative embodiment of the connection assembly A300. In Figure 24, the first and second connecting members 31 and 32 are connected, while in Figure 25, the first and second connecting members 31 and 32 are separated. One of the first and second connecting members 31 and 32 can be a male buckle, and the other a female buckle, which can be fastened together. At least one of the first and second connecting members 31 and 32 is provided with a magnetic device. When fastened together, the two members are also attracted to each other by the magnetic device. More specifically, the first connector 31 is, for example, a male fastener, comprising a protruding structure A315 with a groove 3150 disposed therein. The second connector 32 is, for example, a female fastener, comprising an engaging cavity (not shown) for engaging with the male fastener's protruding structure A315. The female fastener also includes a female locking member (not shown), which engages with the groove 3150 within the engaging cavity. The female fastener may also be provided with a release member A325 operatively connected to the locking member. When the release member A325 is pressed, it disengages the locking member from the groove 3150. Figures 26 and 27 illustrate perspective views of yet another alternative embodiment of the connector assembly A300. In Figure 26, the first connector 31 and the second connector 32 are connected, while in Figure 27, the first connector 31 and the second connector 32 are separated. One of the first and second connecting members 31, 32 can be a male fastener, and the other a female fastener. The male fastener can be inserted into the female fastener. More specifically, the first connecting member 31, for example, is a male fastener provided with a locking hole A316. The second connecting member 32, for example, is a female fastener, which includes a locking cavity A320 within which a locking member (not shown) is disposed. When the male and female fasteners are connected, the locking hole A316 is located within the locking cavity A320 and engages with the locking member. The female fastener also includes a release member A326, which is operably connected to the locking member. When the release member A326 is pressed, the locking member is driven out of the locking hole A316. 28 and 29 show perspective views of yet another alternative embodiment of the connection assembly A300, wherein the first connection member 31 and the second connection member 32 are connected in FIG28 , and the first connection member 31 and the second connection member 32 are separated in FIG29 .The first connecting member 31 and the second connecting member 32 may be Velcro strips that fit together. The first connecting member 31 may be directly connected to the canopy 1321, and the second connecting member 32 may be directly connected to the seat fabric 202. Figure 30 schematically illustrates a perspective view of a vehicle A1000 provided in some embodiments of the present invention. Vehicle A1000 may be, but is not limited to, a pet carrier. As shown in Figure 30, vehicle A1000 includes a roof assembly A100 and a container body A200. Figure 31 illustrates a top view of vehicle A1000. Figure 32 illustrates a perspective view of the movable roof 1332 of the roof assembly A100 separated from the fixed roof 1331. In this embodiment, the roof assembly A100 includes a fixed roof 1331 and a movable roof 1332. Referring to Figure 32 , the fixed roof 1331 is non-detachably connected to the container body A200, while the movable roof 1332 is detachably connected to both the container body A200 and the fixed roof 1331. Unless otherwise specified, the structure of the container body A200 in this embodiment can be referenced above regarding the structure of the container body A200. The container body A200 includes a storage space 212 and a top opening 20, with the fixed roof 1331 covering a portion of the top opening 20. The fixed roof 1331 has an arched first edge 13311, while the movable roof 1332 has an arched second edge 13322, with the first edge 13311 and the second edge 13322 facing each other. The movable roof 1332 also has a bottom edge 13321. The fixed roof 1331 may be provided with ventilation openings 13310, and the movable roof may be provided with ventilation openings 13320. Both ventilation openings 13310 and 13320 may be covered by a mesh structure (e.g., a mesh fabric). Referring to Figure 30 , when the roof assembly A100 is in normal use, the movable roof 1332 abuts against the fixed roof 1331, completely covering the top opening 20 of the accommodating body A200. More specifically, the first edge 13311 of the fixed roof 1331 and the first edge 13322 of the movable roof 1332 may be connected via one or more connecting assemblies A400. Furthermore, the bottom edge 13321 of the movable roof 1332 may be detachably connected to the accommodating body A200 via one or more connecting assemblies A400. 32 , the movable roof 1332 can be separated from the accommodating wood body A200 and the fixed roof 1331 as needed.Referring to Figures 30 and 31 , in some embodiments, a connecting assembly A400 may be provided between the top of the first edge 13311 and the top of the second edge 13322. Another connecting assembly A400 may be provided between the bottom of the first edge 13311 and the bottom of the second edge 13322. Furthermore, at least one connecting assembly A400 may be provided between the waist of the first edge 13311 and the waist of the second edge 13322. In some embodiments, multiple connecting assemblies A400 provided between the first edge 13311 and the second edge 13322 are evenly spaced. Furthermore, although the number of connecting assemblies A400 between the bottom edge 13321 of the movable roof 1332 and the accommodating body 100 in this embodiment can be adjusted as needed, referring to Figure 32 . In this embodiment, each connecting assembly A400 includes a first connector 41 and a second connector 42, which are detachably connected. The first connector 41 can be connected to the movable roof 1332 via a webbing 401, and the second connector 42 can be connected to the fixed roof 1331 or the container body A200 via a webbing 402. The specific embodiments of the first connector 41 and the second connector 42 can be found in the examples above for the first connector 31 and the first connector 32, and will not be repeated here. Furthermore, the connecting assembly A400 connected between the movable roof 1332 and the container body A200 can be referred to as a connection reinforcement. The end of the first connector 41 connected to the movable roof 1332 can be referred to as the second end of the connection reinforcement, and the other end of the second connector 42 connected to the container body A200 can be referred to as the first end of the connection reinforcement. The connection and disconnection of the first connector 41 and the first connector 42 correspond to the connection and disconnection states of the connection reinforcement. Figures 33 to 36 show perspective views of a carrier A1000 according to some embodiments of the present invention from different perspectives. In Figures 34 and 35 , the clip 52 is in a stowed position, while in Figure 36 , the clip 52 is in an operational position. Referring to Figure 33 , the shape of carrier A1000 approximates a rectangular parallelepiped. However, the shape of carrier A1000 is not limited to a rectangular parallelepiped. Carrier A1000 includes a bottom support structure 501 and a receiving portion 502 located above the bottom support structure 501. The receiving portion 502 includes a top surface and multiple side surfaces. For example, the multiple side surfaces include two first side surfaces 5a and two second side surfaces 5b. The two second side surfaces 5b are located between the two first side surfaces 5a. Each first side surface 5a extends longitudinally, and each second side surface 5b extends transversely.In some embodiments, the longitudinal extension of the first side 5a is greater than the transverse extension of the second side 5b. The accommodating portion 502 and the bottom support structure 501 define a storage space 50, which is used, for example, to accommodate a pet. The bottom support structure 501 can be made of a rigid material to support the accommodating portion 502. The accommodating portion 502 can include a fabric sheet or other material that surrounds the accommodating space 50. Ventilation openings 503 can be provided on the top and / or side surfaces of the accommodating portion 502. The vents 503 can be covered by a mesh structure (e.g., a mesh fabric). Referring to Figures 34 and 35 , the bottom surface of the bottom support structure 501 is formed with a recess A510. Two rods 51 are mounted in the recess A510. The two rods 51 are parallel to each other and extend longitudinally. In some embodiments, the two rods 51 are symmetrically arranged, for example, relative to the longitudinal center plane of the vehicle A1000 (not shown). Two clips 52 are mounted on one of the rods 51, each having an outwardly protruding clip portion 521. The carrier A1000 can be placed on a cart's clip seat (not shown) and connected via each clip portion 521 and a locking element (e.g., a hook, not shown) of the clip seat. In some embodiments, the clip portions 521 may be provided with a locking hole for engagement with the hook. Each clip 52 is rotatably mounted on the rod 51, allowing it to be rotated between a stowed position and a use position. Referring to FIG. 36 , when the clip 52 is in the use position, the clip portion 521 of the clip 52 rotates to a downwardly extending position to engage with the locking element of the clip seat. In some embodiments, when the clip 52 is in the use position, the clip portion 521 protrudes downward relative to the bottom of the carrier A1000. Referring to Figures 34 and 35 , when the clamping member 52 is in the stowed position, the clamping portion 521, for example, rotates to a horizontal position rather than extending downward. This protects the clamping portion 521 from impacts from objects below the vehicle A1000 when not in use. The clamping member 52 normally remains in the stowed position. The vehicle A1000 may also be provided with an operating member 53 that can be operably connected to each clamping member 52. The operating member 53 is, for example, mounted on the bottom support structure 501. When the operating member 53 is driven by a force, it drives the clamping member 52 to rotate in direction R to the use position. In some embodiments not shown, the operating member 53 is connected to each clamping member 52 via a linkage, such as a wire rope 512.A reset member (e.g., a torsion spring) may also be provided between the clamping member 52 and the rod 51. The reset member is used to drive the clamping member 51 to rotate toward the stowed position, thereby maintaining the clamping member 51 in the stowed position. It should be noted that in other embodiments, the number of rods 51 is not limited to the two described above, but may be one or more as needed. Furthermore, the extension direction of each rod 51 is not limited to the longitudinal direction; in other embodiments, each rod 51 may extend, for example, in the transverse direction. Furthermore, the number of clamping members 52 on each rod 51 is not limited to the two described above, but may be one or more as needed. For example, in the variant embodiment shown in FIG37 , a longitudinally extending rod 51 is provided in the recess A510. The rod 51 is located on one side of the longitudinal center plane (not shown) of the carrier A 1000. Two clamping members 52 are provided on the rod 51, and the operating member 53 is operably connected to the two clamping members 52. In the variant embodiment shown in FIG38 , two laterally extending rods 51 are disposed in the recess A510. The two rods 51 are symmetrically arranged relative to the transverse center of the carrier A1000 (not shown). Two clips 52 are disposed on one of the rods 51, and an operating member 53 is operably connected to the two clips 52. In the variant embodiment shown in FIG39 , a single laterally extending rod 51 is disposed in the recess A510, located to one side of the transverse center plane (not shown) of the carrier A1000. Two clips 52 are disposed on the rod 51, and an operating member 53 is operably connected to the two clips 52. FIG40 schematically illustrates a perspective view of a carrier A1000 provided in some embodiments of the present invention. The carrier A1000 may be, but is not limited to, a pet carrier. As shown in Figure 40 , vehicle A1000 includes a roof assembly A100 and a container body A200. Figure 41 shows a top view of vehicle A1000. Figure 42 shows a perspective view of the movable roof 1342 of the roof assembly A100 separated from the fixed roof 1341. Figure 43 shows a partial cross-sectional view of the movable roof 1342 shown in Figure 41 taken along the line U1-U1. Vehicle A1000 of this embodiment is a variation of the vehicle A1000 shown in Figures 30 to 32 . Unless otherwise specified, the structure of vehicle A1000 of this embodiment may refer to the structure of vehicle A1000 of Figures 30 to 32 . As shown in Figures 40 and 42 , in this embodiment, roof assembly A100 includes a fixed roof 1341 and a movable roof 1342. Referring to Figure 42 , the fixed roof 1341 is non-detachably connected to the container body A200.The container body A200 includes a storage space 212 and a top opening 20. A fixed roof 1331 partially covers the top opening 20. The fixed roof 1331's fabric may or may not be equipped with ventilation holes. The fixed roof 1341 has an arched first edge 1341a, and the movable roof 1342 has an arched second edge 1342a, with the first edge 1341a and the second edge 1342a facing each other. The movable roof 1332 also has a bottom edge 1342b. Referring to Figures 40 and 41, when the roof assembly A100 is in normal use, the movable roof 1342 abuts the fixed roof 1341, completely covering the top opening 20 of the container body A200. More specifically, the bottom edge 1342b of the movable roof 1342 can be detachably connected to the container body A200 via one or more connecting assemblies A400. In some embodiments, the first edge 1341a of the fixed roof 1341 and the second edge 1342a of the movable roof 1342 may also be connected via one or more connecting assemblies A400. Referring to FIG42 , the movable roof 1342 can be separated from the container body A200 and the fixed roof 1341 as needed. A handle 19 may be installed on the movable roof 1342. This embodiment shows an exemplary embodiment of the movable roof 1342. The movable roof 1342 includes a grid-type frame that covers the top opening 20 of the container body A200. The grid-type frame may be made of, for example, metal strips, plastic strips, or strips of other materials. In some embodiments, the movable roof 1342 may also include a fabric layer covering the grid-type frame. This fabric layer may be a mesh fabric layer. An exemplary embodiment of the grid-type frame is shown in conjunction with FIG42 and FIG43 . The grid-type frame, for example, includes a plurality of support bars 13421 spaced apart in the transverse direction and a plurality of support bars 13422 spaced apart in the longitudinal direction. The support bars 13421 and 13422 can be made of metal, plastic, or other materials. In some implementations, at least some of the second connectors 41 correspond to the ends of at least some of the support bars 13422. In some embodiments, at least some of the first connectors 41 correspond to the ends of at least some of the support bars 13421. In some embodiments, the plurality of support bars 13421 and the plurality of support bars 13422 are arranged in a cross pattern. More specifically, the plurality of support bars 13421 and the plurality of support bars 13422 are connected, for example, in a perpendicular, cross pattern.In some embodiments, the fixed roof 1341 may include a grid-type frame similar to the movable roof 1342, which may be covered by a fabric layer. Figure 44 schematically illustrates a perspective view of a vehicle A1000 provided in some embodiments of the present invention. Vehicle A1000 may be, but is not limited to, a pet carrier. As shown in Figure 44, vehicle A1000 includes a roof assembly A100 and a wooden container A200. Figure 45 illustrates a top view of vehicle A1000. Figure 46 illustrates an enlarged view of point C in Figure 45, where the first half roof 1325 and the second half roof 1326 are connected via a magnetic device A600 serving as a connecting component. Figure 47 illustrates the first half roof 1325 and the second half roof 1326 separated. Figure 48 illustrates a perspective view of the roof 132 in a partially opened state. As shown in Figure 44, in this embodiment, the ceiling assembly A100 includes a bottom frame 131 and a ceiling 132 supported by the frame 131. The frame 131 is, for example, generally rectangular, and includes two opposing first sides 11 and two opposing second sides 12. A pivot seat A1312 is provided in the middle of each first side 11. Each pivot seat A1312 is provided with a pivot axis A125 and a pivot axis A126, which are spaced apart in the longitudinal direction. In some embodiments, the frame 131 may be an integrally molded component. The ceiling 132 includes two opposing half-ceilings: a first half-ceiling 1325 and a second half-ceiling 1326. Each half-ceiling may include a tent fabric and an arched support (not shown) for supporting the tent fabric in an arched shape. The bottom edge of each half-ceiling is connected to the frame 131. The first half roof 1325 includes an arched edge 1325L. The ends of edge 13251 are pivotally connected to corresponding pivots A125. The second half roof 1326 includes an arched edge 13261. The ends of edge 13261 are pivotally connected to corresponding pivots A126. Referring to Figures 44 and 45, when the roof 132 is fully deployed, edge 13251 of the first half roof 1325 and edge 13261 of the second half roof 1326 abut each other. The abutment position corresponds to the horizontal center of the roof assembly A100, M3-M3. Referring to Figure 48, when edge 13251 and edge 13261 pivot downward about their corresponding pivots, the roof 132 opens from the center. 44 and 48 , the frame 131 may be placed on top of the container body A200, and the ceiling assembly A100 and the container body A200 may be detachably connected via a plurality of connection assemblies A300.Unless there is a conflict, the structures of the container body A200 and the connecting assembly A300 can be described above. In some embodiments, multiple connecting assemblies A300 are arranged along each first side 11 of the frame 131. In some embodiments, a portion of the multiple connecting assemblies A300 may also be arranged along each first side 12 of the frame 131. Referring to Figure 44, when the roof assembly A100 is fully deployed, the roof 132 can completely cover the top opening 20 of the container body A200. Referring to Figure 48, when the roof 132 is fully opened from the center to both sides, the top opening 20 is exposed. Referring to Figures 45 and 46, a magnetic device A600 is disposed between the edge 13251 of the first half roof 1325 and the edge 13261 of the second half roof 1326. Under the action of the magnetic device A600, the edge 13251 of the first "I" roof 1325 and the edge 13261 of the first half roof 1326 can be attracted together, maintaining the roof assembly A100 in the fully deployed state. In some embodiments, the magnetic device A600 includes, for example, a first magnet 61 and a second magnet 62. The first magnet 61 is positioned, for example, in the transverse middle of the edge 13251, and the second magnet 62 is positioned, for example, in the transverse middle of the edge 13261. The two magnetic poles of the first magnet 61 (the north pole and the south pole in FIG. 46 ) are positioned opposite the two magnetic poles of the second magnet 62. When the edges 13251 and 13261 abut, the two magnetic poles of the first magnet 61 and the two magnetic poles of the first magnet 62 are attracted to each other in the longitudinal direction L. Referring to Figures 47 and 48 , when the roof 132 needs to be opened, a lateral thrust F1 can be applied to the first half of the roof 1325, and / or a lateral thrust F2 can be applied to the second half of the roof 1326, so that the like magnetic poles of the first magnet 61 and the second magnet 62 face each other, thus easily opening the roof 132 from the center. Of course, the embodiment and placement of the magnetic device A600 are not limited to the above description. Figures 49 to 56 illustrate some variations of the magnetic device A600. Referring to the variations shown in Figures 49 and 51 , the magnetic device A600, for example, includes a first magnet 61, a second magnet 62, and a knob 601 provided with a third magnet 63. The first magnet 61 is, for example, positioned laterally midway along the edge 13251, and the second magnet 62 is, for example, positioned laterally midway along the edge 13261. The first magnet 61 and the second magnet 62 are positioned in opposite magnetic directions.A knob 601, equipped with a third magnet 63, is rotatably mounted on edge 13251 or edge 13261. Referring to FIG50 , when the two magnetic poles of the second magnet 63 face the opposite magnetic poles of the first magnet 61 and the second magnet 62, the third magnet 61, the second magnet 63, and the second magnet 62 are sequentially attracted to each other. Referring to FIG51 , when it is necessary to open the ceiling 132, the knob 601 is rotated, for example, in the direction indicated by arrow W1, so that the two magnetic poles of the third magnet 63 face the like magnetic poles of the first magnet 61 and the second magnet 62, repelling each other. This allows the ceiling 132 to be easily opened from the center. Referring to the variant embodiments shown in FIG52 and FIG53 , the magnetic device A600 includes, for example, a first magnet 61 and a second magnet 62. The first magnet 61 is positioned, for example, in the transverse middle of edge 13251, and the second magnet 62 is positioned, for example, in the transverse middle of edge 13261. Referring to FIG. 53 , when edge 13251 of the first half of the canopy 1325 and edge 13261 of the first half of the canopy 1326 abut, the first magnet 61 and the second magnet 62 attract each other (i.e., overlap). To open the canopy 132, the first magnet 61 and the second magnet 62 are separated by pulling on either edge 13251 of the first half of the canopy 1325 or edge 13261 of the second half of the canopy 1326 (in this embodiment, edge 13261 of the second half of the canopy 1326 is located on top). In some embodiments, a lifting portion 602 can be provided on edge 13251 or edge 13261 to facilitate application of a force F3 separating the first magnet 61 and the second magnet. Referring to the variant embodiment shown in Figures 54 to 56 , the magnetic device A600, for example, includes a first magnet 61, a second magnet 62, and an operating member 603. The first magnet 61 is positioned, for example, in the transverse middle of edge 13251, and the second magnet 62 is positioned, for example, in the transverse middle of edge 13261. Referring to Figure 55 , when edge 13251 of the first half roof 1325 and edge 13261 of the second half roof 1326 abut, the first magnet 61 and the second magnet 62 attract each other vertically. Furthermore, a pivot seat 13262 and a hole 13260 are provided on the upper edge 13261. The operating member 603 is pivotally connected to the pivot seat 13262 via a shaft 6031. The operating member 603 includes an abutting end 6032 and an operating end 6033.When the operating end 6033 is driven by an external force and pivots in the direction of arrow W2, the abutting end 6032 can apply a downward thrust to the lower edge 13251 through the hole 13260, thereby separating the first magnet 61 and the second magnet 62. Figure 57 shows a perspective view of a carrier A1000 according to some embodiments of the present invention. Carrier A1000 may be, but is not limited to, a pet carrier. As shown in Figure 57, carrier A1000 includes a roof assembly A100 and a container body A200, wherein the roof assembly A100 is connected to the container body A200, and the roof assembly A100 is in a fully extended state. Figure 58 shows a top view of the carrier A1000. Figure 59 shows a perspective view of the carrier A1000 with the roof assembly A100 and the container body A200 completely separated. Referring to Figures 57 and 58 , the bottom frame 13 of the ceiling assembly A100 is, for example, generally rectangular. The four sides of the frame 13 correspond to the four sides of the ceiling assembly A100: two opposing first sides 1301 and two opposing second sides 1302. The two second sides 1302 are located between the two first sides 1301. The two first sides 1301 extend longitudinally, while the two second sides 1302 extend transversely. In some embodiments, the longitudinal length of the second sides 1301 is greater than the transverse length of the second sides 1302. The first sides 1301 can be referred to as long sides, while the first sides 1302 can be referred to as short sides. Referring to Figures 58 and 59 , unless otherwise specified, the structure of the container body A200 can refer to the structure of the container body A200 shown in Figures 1 to 4 . The container body A200 is shaped approximately like a rectangular parallelepiped and includes two opposing first side surfaces 21 and two opposing second side surfaces 22, with the two second side surfaces 22 located between the two second side surfaces 21. In this embodiment, the first side surfaces 21 extend longitudinally, and the second side surfaces 22 extend transversely. In some embodiments, the longitudinal length of the first side surface 21 is greater than the transverse length of the first side surface 22. Referring to Figures 57 and 58, when the ceiling assembly A100 is in use, the bottom of the ceiling assembly A100 can cover the top of the container body A200. The first side edge 1301 of the ceiling assembly A100 corresponds to the first side surface 21 of the container body A200, and the second side edge 1302 of the ceiling assembly A100 corresponds to the second side surface 22 of the container body A200. The ceiling assembly A100 and the container body A200 are detachably connected via a plurality of connecting assemblies A700.More specifically, at least one connecting assembly A700 is connected between each first side 1301 of the ceiling assembly A100 and each first side 21 of the container body A200, and at least one connecting assembly A700 is connected between each second side 1302 of the ceiling assembly A100 and each second side 22 of the container body A200. Although one connecting assembly A700 is provided between each pair of first sides 1301 and first side 21, and one connecting assembly A700 is provided between each pair of second sides 1302 and second side 22 in this embodiment, the number of connecting assemblies A700 may be increased as needed in other embodiments. Unless otherwise specified, the placement of the connecting assembly A700 may refer to the placement of the connecting assembly A300 described above. This embodiment illustrates an exemplary implementation of the connecting assembly A700. The connection assembly A700 includes an extension fixture (also called a first connector) 71 and a receiving connector (also called a second connector) 72. One of the extension fixture 71 and the receiving connector 72 is connected to the ceiling assembly A100, while the other is connected to the container body A200. The receiving connector 72 has a receiving cavity A720 for receiving the extension fixture 71. The connection assembly A700 forms a plug-in connection point between the ceiling assembly A100 and the container body A200. In some embodiments, the ceiling assembly A100 may include a grid-type frame, which covers the top opening 20 of the container body A200. Some embodiments of the present invention provide a container body A200. Figure 60 shows a perspective view of the container body A200, which provides a relatively small volume. Figure 61 shows a cross-sectional view taken along line U5-U5 in Figure 60. Figure 62 shows another perspective view of the container body A200, which provides a large capacity. The container body A200 may include a housing 201, which includes a bottom wall 2011 and side walls 2012. The bottom wall 2011 and the side walls 2012 define a top opening A210. At least one telescopic wall A202 is mounted on the side walls 2012 of the housing 201. The telescopic wall A202 is telescopic in the height direction H of the housing 201, allowing it to extend or retract relative to the side walls 2012. It will be appreciated that the longer the telescopic wall A202 extends upward in the height direction H, the greater the capacity of the container body A200. The container body A200 also includes a locking mechanism A800, which is used to lock the telescopic wall A202 in place to prevent undesirable expansion and contraction.Specifically, in this embodiment, a telescopic wall A202 is mounted on the side wall 2012± of the housing 201. The locking mechanism A800, for example, includes a locking member 81, a pivot 82, and a reset member (not shown). The middle portion of the locking member 81 is pivotally connected to the telescopic wall A202± via the pivot 82. A protrusion 811 is provided at one end of the locking member 81. The telescopic wall A202± is provided with a through-hole 2020. The side wall 2012 is provided with a plurality of recesses 2010 spaced apart along the height direction H. When the telescopic wall A202 is adjusted into position, the through-holes 2020 face the corresponding recesses 2010, and the protrusions 811 pass through the through-holes 2020 and engage with the recesses 2010, thereby locking the telescopic wall A202 in place. The reset member acts on the locking foot member 81, maintaining the locking member 81 in the locked position, where the protrusion 811 engages with the recesses 2010. The reset member, for example, is a torsion spring that can be mounted on the pivot 82. Its two spring arms can respectively abut the locking member 81 and the telescopic wall A202. To adjust the volume of the container body A200, pressure is applied to the other end of the locking member 81. The locking member 81, under the applied force, rotates about the pivot 82. The protruding structure 811 exits the recess 2010, allowing the telescopic wall A202 to be adjusted up or down. Once the telescopic wall A202 is in place, the locking member 81 can re-lock the telescopic wall A202. If no conflict exists, the wooden container body A200 can be equipped with the ceiling assembly A100 described in any of the aforementioned embodiments, which is configured to engage with the telescopic wall A202. The technical features of the above-described embodiments may be combined in any manner. For example, the technical features of the carrier 100 shown in Figures 1A to 17E and the technical features of the carrier A1000 shown in Figures 18 to 62 may be combined in any manner, unless they conflict. For example, the specific embodiment of the carrier detachably connected to the base shown in Figures 13 to 17E may be applied to any of the carriers shown in Figures 1A to 12, 18 to 21, and 30 to 62, so that these carriers can also be detachably connected to the base; the guide member shown in Figure 12 may be applied to any of the carriers shown in Figures 1A to 10, 13A to 21, 30 to 32, and 40 to 59; and the structure of the housing body shown in Figures 60 to 62 may be applied to any of the carriers described herein. The connection reinforcement member of the carrier in Figures 1A to 10 can be interchanged with the first connection member and the second connection member of the carrier shown in Figures 18 to 32 and Figures 40 to 59.The roof portion of the vehicle shown in Figures 1A to 10 is interchangeable with the roof portion of the vehicle shown in Figures 18 to 32 and Figures 40 to 59. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as these combinations of technical features do not conflict, they should be considered within the scope of this specification. The above embodiments merely represent several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art will be able to make various variations and improvements without departing from the spirit of the present invention, and these variations and improvements are all within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

Claims 1. A carrier, characterized in that: include: Box part; A ceiling part, the ceiling part is detachably connected to the box part through a plurality of connecting reinforcements, and is used to fix the ceiling part to the box part; wherein, a first end of the connecting reinforcement is connected to the ceiling part or the connecting reinforcement and the ceiling part form an integral structure, the connecting reinforcement has a second end extending from the ceiling part, and the second end of the connecting reinforcement is detachably connected to the box part; or, the connecting reinforcement includes a first connecting member and a second connecting member, the first connecting member is connected to the ceiling part, the second connecting member is connected to the box part, and the first connecting member and the first connecting member are detachably connected.

2. The carrier according to claim 1, characterized in that the carrier further comprises a bracket assembly connected to the box portion; wherein, A retaining ring is provided on the bracket assembly, and the retaining ring forms an opening. The second end of the connecting reinforcement extends through the opening and then reverses toward the ceiling part and is then positioned; or the bracket assembly includes a recess, and the second end of the connecting reinforcement has a rigid hook-shaped end, and the hook-shaped end is suitable for being received by the recess; or the second end of the connecting reinforcement is provided with a first guide rod; the bracket assembly is formed with a first guide groove, and the first guide groove is used to receive, guide and limit the first guide rod; or the connecting reinforcement includes a first connecting belt having the first end and the second end; the carrier also includes a second connecting belt, the second connecting belt is attached to the bracket assembly, and the second connecting belt has an exposed free end; the free end of the second connecting belt is detachably connected to the second end of the first connecting belt.

3. The carrier according to claim 2, characterized in that: The second connecting belt is attached to the surface of the bracket assembly facing the outer bottom of the box part, and the free end of the second connecting belt passes through between the bracket assembly and the box part to be exposed; or the bracket assembly has a hollow channel, and the first connecting belt extends in the hollow channel and is exposed from the end of the hollow channel; or the bracket assembly is formed with a second guide groove, and the second connecting belt includes a second guide rod embedded in the second connecting belt, and the second guide rod is suitable for being accommodated in the second guide groove.

4. The carrier according to claim 3, characterized in that: The bracket assembly includes a first frame, a second frame and a connecting frame, the first frame is close to the upper periphery of the box part, the first frame is located below the first frame, the connecting frame is connected between the first frame and the first frame, and the respective contours of the first frame and the connecting frame correspond to the contour of the box part; the second connecting belt is attached to the surface of the connecting frame facing the outer bottom of the box part through a fastener, and the free end of the second connecting belt is exposed at the end of the connecting frame; or the connecting frame forms the hollow channel, and the free end of the first connecting belt is exposed from the end of the connecting frame; or the connecting frame is formed with the second guide groove.

5. The carrier according to claim 1, characterized in that: The carrier comprises a containing body, the containing body comprises the box body part; the containing body has a top opening, the ceiling part covers the containing body to cover the top opening; the frame of the bottom of the ceiling part comprises two opposite first side edges and two opposite second side edges, the two second side edges are located between the two first side edges; the containing body comprises two opposite first side edges and two opposite second side edges, the two first side edges are located between the two first side edges; at least one connecting reinforcement member is arranged between each of the first side edges and the opposite first side edge, each of the second side edges and the opposite At least one connection reinforcement member is arranged between the second side surfaces.

6. The carrier according to claim 1, characterized in that: The carrier includes a containing body, which includes the box part; the containing body has a top opening, and the ceiling part covers the containing body to cover the top opening; wherein the ceiling part includes two oppositely arranged half-ceilings, the two half-ceilings are respectively a first half-ceiling and a second half-ceiling, and the edges of the first half-ceiling and the second half-ceiling opposite to each other are detachably connected by at least one connecting component; or the ceiling part includes a fixed ceiling and a movable ceiling, and the fixed ceiling is non-detachably connected to the containing body; the bottom of the movable ceiling and the containing body are detachably connected by at least one connecting reinforcement, and / or the edges of the movable roof and the fixed ceiling opposite to each other are detachably connected by at least one connecting component.

7. The carrier according to claim 6, characterized in that: The edges of the first half ceiling and the second half ceiling that are opposite to each other are attracted to each other by a magnetic device serving as the connecting component; the magnetic device includes: a first magnet, which is arranged on the edge of the first half ceiling; a second magnet, which is arranged on the edge of the second half ceiling; when the edges of the first half ceiling and the second half ceiling that are opposite to each other are in contact, the first magnet and the second magnet are attracted to each other; or one of the edges of the first half ceiling and the second half ceiling that are opposite to each other is equipped with a knob, and the knob is provided with the second magnet; when the edges of the first half ceiling and the second half ceiling that are opposite to each other are in contact, the knob is turned so that the third magnet and the first magnet and the second magnet are attracted to each other or repel each other.

8. The carrier according to claim 7, characterized in that: When the edges of the first half ceiling and the second half ceiling that are opposite to each other are in contact, the first magnet and the second magnet are overlapped; wherein, the first half ceiling or the second half ceiling where the upper one of the first magnet and the second magnet is located is provided with a lifting portion; or the first half ceiling or the second half ceiling where the upper one of the first magnet and the second magnet is located is provided with a pivot seat and a hole, the pivot seat is pivotally connected to an operating member, and the operating member includes an abutting end and an operating end; when the operating end is driven by an external force, the abutting end passes through the hole and applies a downward thrust to the second half ceiling or the first half ceiling located below, so as to separate the first magnet from the first magnet.

9. A carrier, characterized in that: include: A box body, the box body comprising a bottom wall and side walls; at least one telescopic wall is mounted on the side walls of the box body, and the at least one telescopic wall can be telescoped in the height direction of the box body; a locking mechanism is used to lock the position of the at least one telescopic wall.

10. A carrier, characterized in that: A clamping member or a connecting rod is disposed at the bottom of the carrier, and the clamping member or the connecting rod is suitable for rotating between a use position and a storage position.

11. The carrier according to claim 10, characterized in that: The carrier includes a bottom support structure and a accommodating portion located above the bottom support structure; a recess is formed on the bottom surface of the bottom support structure, and at least: a rod is arranged in the recess, and at least:: a rod is installed with at least one said clamping member, and the clamping member is provided with a clamping portion protruding outward; the clamping member can rotate around the rod on which it is located, so that the clamping portion is rotated to the use position or the storage position.

12. The carrier according to claim 10, characterized in that: The carrier includes a box portion, and the outer bottom of the carrier includes a recessed portion; when in the storage position, the connecting rod is received in the recessed portion; when in the use position, the connecting rod is pivoted out of the recessed portion.

13. A travel device, characterized in that: It comprises a base and a carrier, wherein the carrier is detachably connected to the base.

14. The travel device according to claim 13, characterized in that: The carrier includes a connecting rod, which is received in a recessed portion at the outer bottom of the carrier and can be rotated out from the recessed portion; the base includes a connecting recess and a first actuating portion, a connecting component is arranged in the connecting recess, the connecting component has an opening portion for the connecting rod to pass through, and the connecting recess has an inclined surface for guiding the connecting rod; the carrier is provided with a second actuating portion at a position corresponding to the first actuating portion; when the carrier is placed on the base, the first actuating portion triggers the first actuating portion, and after the first actuating portion is triggered, the connecting rod is caused to pivot to engage with the connecting component.

15. The travel device according to claim 13, wherein: The base includes a connecting recess, a connecting component is arranged in the connecting recess, and the connecting component has an opening portion; the carrier also includes a bracket assembly connected to the box portion, the bracket assembly includes a second frame that can slide with the connecting recess, the second frame can pass through the opening portion of the connecting component and be loaded into the connecting component; the second frame is provided with a structure that cooperates with the connecting component.

16. The travel device according to claim 15, characterized in that: The second frame is provided with a connecting column that can be extended and retracted; when the second frame is loaded into the connecting component, the connecting column is suitable for extending from the second frame to engage with the connecting component; or, a stop ring is provided on the second frame, and when the second frame is loaded into the connecting component and the second frame slides into place relative to the connecting component, the stop ring is in direct contact with the connecting component.

17. The travel device according to claim 13, characterized in that: The base is slidably matched with the carrier, and the hernia seat is provided with an actuating portion and a connecting component that can be extended and retracted relative to the base; when the carrier slides into place on the base, the actuating portion is triggered, causing the connecting component to extend and engage with the carrier.

18. The travel device according to claim 17, characterized in that: The base includes a guide groove, in which the connecting component and the actuating portion are arranged, and the connecting component can extend and retract relative to the guide groove; the carrier also includes a bracket assembly connected to the box body part, the bracket assembly includes a second frame for engaging with the connecting component, and a guide member slidably matched with the guide groove is installed on the bracket assembly; when the guide member slides into place, the guide member triggers the actuating portion, causing the connecting component to extend relative to the guide groove and engage with the second frame; or, the base defines an internal space, and the carrier slidably cooperates with the internal space; the connecting component and the actuating portion are arranged in the internal space, and the connecting component can extend and retract relative to the wall of the internal space; the carrier includes a connecting recess engaged with the connecting component by a butt; when the carrier slides into place, the box body part triggers the actuating portion, causing the connecting component to extend to engage with the connecting recess.

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