Carrier

Abstract

Disclosed in the present invention is a carrier, comprising: a box assembly, which defines an accommodating space; and a cover assembly, which is attached to the box assembly. The cover assembly comprises a connecting base and a cover frame. The cover frame is pivotally connected to the connecting base and can pivot between a closed position and a maximum-open position. The maximum-open angle of the cover frame when open is an obtuse angle at the maximum-open position relative to when same is at the closed position. FIG. 3

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS This application claims priority to Chinese Patent Application No. 202411126859.7, filed August 15, 2024, entitled “Carrier,” Chinese Patent Application No. 202411513826.8, filed October 28, 2024, entitled “Carrier,” and Chinese Patent Application No. 202511124506.8, filed August 11, 2025, entitled “Carrier,” the entire contents of which are hereby incorporated by reference herein for all purposes. TECHNICAL FIELD The present invention relates to a carrier. BACKGROUND In the related art, there are carriers for carrying living bodies such as pets, for example, pet boxes or pet baskets. However, the carriers in the related art still have room for improvement in terms of use convenience, safety, and the like. In view of this, it is necessary to provide a carrier for at least one of the above problems. According to a first aspect of the present invention, a carrier is provided, comprising: a box assembly, the box assembly defining a containing space; and a ceiling assembly, the ceiling assembly being attached to the box assembly. The ceiling assembly comprises a connecting seat and a ceiling frame. The ceiling frame is pivoted to the connecting seat, and the ceiling frame can be pivoted between a closed position and a maximum open position. Wherein, the ceiling frame is obtuse relative to the maximum open angle thereof opened in the closed position. In one embodiment, the connecting seat has a stop portion, the stop portion comprising an inclined side wall inclined toward the center side of the connecting seat. In one embodiment, the lower end of the inclined side wall is provided with a circular-arc-shaped concave wall, the top end of the circular-arc-shaped concave wall is offset from the bottom end of the circular-arc-shaped concave wall by a distance toward the center side of the connecting seat. In one embodiment, the connecting seat comprises a limiting seat and a pivoting seat connected to at least one side of the limiting seat, the pivoting seat comprises a pivot shaft, the stop portion is arranged on the limiting seat, and when the ceiling frame is pivoted to the maximum open position around the pivot shaft, the stop portion abuts against the ceiling frame to prevent further pivoting opening of the ceiling frame. In one embodiment, the ceiling frame comprises a ceiling rod and a pivot cylinder connected to the end of the ceiling rod; the pivot cylinder of the ceiling frame is sleeved on the pivot shaft to be pivoted to the connecting seat. In one embodiment, the circular-arc-shaped concave wall is arranged on the limiting seat, the circular-arc-shaped concave wall extends along a circular arc with the pivot shaft as the center, the pivot cylinder has a circular-arc-shaped convex wall extending along a circular arc with the pivot shaft as the center, when the ceiling frame is pivoted around the pivot shaft, the circular-arc-shaped convex wall slides against and pivots along the circular-arc-shaped concave wall. In one embodiment, the pivoting seat further comprises a pivoting seat base, one side of the pivoting seat base is connected to the limiting seat, and the pivot shaft extends from the pivoting seat base. In one embodiment, the ceiling rod comprises an end rod portion and a central rod portion except the end rod portion, and the end rod portion and the central rod portion are bent and transitioned.In the carrier according to the first aspect of the present application, the roof frame is obtuse with respect to the maximum opening angle thereof in the closed position. Thus, compared with the case where the maximum opening angle is acute or right, the carrier according to the first aspect of the present application can increase the maximum rotatable angle of the roof frame, thereby increasing the maximum openable space of the roof assembly. When the roof frame is opened to the maximum opening angle, the pet in the carrier can stand up, and the pet is less likely to be pressed, thereby improving the comfort of the pet. According to the second aspect of the present application, a carrier is provided, comprising: a box assembly defining a containing space, the box assembly comprising a box body and a base located below the box body; wherein the base comprises a base body and a connecting device provided on the base body, the connecting device having one or more insertion portions adapted to be inserted into a connecting fitting of a vehicle seat; viewed from a side of the carrier facing the connecting device, a first center line of the one or more insertion portions in a height direction is offset by a first distance with respect to a second center line of the base body or the box body in the height direction. In an embodiment, each insertion portion has a retracted state accommodated in the base body and an expanded state protruding from the base body; viewed from a side of the carrier facing the connecting device, the first center line is a center line of the one or more insertion portions in the height direction in the expanded state. In an embodiment, the one or more insertion portions are two insertion portions, and the first center line is a center line in the height direction of a midpoint of a line connecting geometric centers of the two insertion portions in the expanded state. In the carrier according to the second aspect of the present application, the first center line of the one or more insertion portions in the height direction is offset by the first distance with respect to the second center line of the base body or the box body in the height direction, such that, compared with the case where the insertion portions are arranged centrally with respect to the base body or the box body, the carrier according to the second aspect of the present application can be offset toward a side away from a door of a vehicle with respect to a center of the seat of the vehicle when fixed on the seat of the vehicle, so that the carrier is farther away from a vehicle component such as the door, thereby being less likely to interfere with the vehicle component such as the door. According to the third aspect of the present application, a carrier is provided, comprising: a box assembly defining a containing space, the box assembly comprising a box body and a base located below the box body, the base comprising a base body; wherein a receiving cavity is defined between the base body and the box body, and the base body is provided with a ventilation hole in communication with air outside; the base body is provided with a dust baffle located in the receiving cavity and surrounding the ventilation hole. In an embodiment, the dust baffle divides the receiving cavity into an air inlet cavity and an air guide cavity; the air inlet cavity and the air guide cavity are in communication via a ventilation passage, and the air guide cavity and the containing space are in communication via an air guide mechanism.In an embodiment, the dustproof baffle top abuts against the bottom of the box body, the ventilation passage includes an air inlet groove formed in the bottom surface of the box body, a portion of the air inlet groove extends into the air inlet cavity, and another portion of the air inlet groove extends into the air guide cavity. In an embodiment, the bottom wall of the air inlet cavity can be provided with a plurality of air leakage holes. In an embodiment, the box body assembly further includes an outer bottom cloth clamped between the box body and the base body, the outer bottom cloth covers the air inlet groove, and at least a portion of the outer bottom cloth in the air inlet cavity and at least a portion of the outer bottom cloth in the air guide cavity are air-permeable cloth. In an embodiment, the box body assembly further includes an inner base cloth wrapped on the inner side of the box body, the inner base cloth includes an inner side wall cloth covering the inner side wall of the box body and an inner bottom wall cloth covering the inner bottom wall of the box body. In an embodiment, the inner side wall cloth and the inner bottom wall cloth are air-permeable cloth. In an embodiment, the inner side wall of the box body is provided with an opening portion at a position corresponding to the air guide mechanism, and the inner side wall cloth is provided with a plurality of air permeation openings in a region corresponding to the opening portion. In an embodiment, the inner side wall cloth is air-permeable cloth or is arranged open in the air permeation openings. In an embodiment, the air guide mechanism includes a fan assembly, the fan assembly includes a fan portion and an air guide portion; wherein the fan portion is located in the air guide cavity, and the air guide portion is used for guiding the air discharged by the fan portion into the containing space. In an embodiment, the fan portion includes a fan shell and a fan blade mounted in the fan shell; the fan shell includes an air suction port and an air exhaust port; the air guide portion includes an air guide shell, and the air guide shell is formed with an air guide passage; wherein the air inlet of the air guide passage is connected to the air exhaust port of the fan shell, and the air outlet of the air guide passage is communicated with the containing space. In an embodiment, the opening portion on the inner side wall of the box body is opposite to the air outlet. In an embodiment, the inner side wall cloth of the base cloth is provided with a plurality of air permeation openings, the inner side wall of the peripheral wall of the box body is provided with a plurality of opening portions corresponding to the plurality of air permeation openings, the air guide passage includes at least one air inlet and a plurality of air outlets, the at least one air inlet is connected to the air exhaust port of the fan shell, the plurality of air outlets are respectively communicated with the containing space and respectively correspond to the plurality of opening portions. In an embodiment, the plurality of air permeation openings are vertically long strip-shaped and / or horizontally long strip-shaped. In an embodiment, the plurality of air permeation openings are distributed in the horizontal direction and / or in the height direction. In an embodiment, the inner side wall cloth of the base cloth is provided with a matrix of air holes, the matrix of air holes includes a plurality of matrix-arranged air holes, the inner side wall of the peripheral wall of the box body is provided with a plurality of opening holes corresponding to the plurality of air holes, the air guide passage includes at least one air inlet and a plurality of air outlets, the at least one air inlet is connected to the air exhaust port of the fan shell, the plurality of air outlets are respectively communicated with the containing space and respectively correspond to the plurality of opening holes.In the carrier provided in the third aspect of the present application, the dustproof baffle is arranged on the base body and located in the accommodation cavity and arranged around the ventilation hole. In this way, the dust in the external air entering the accommodation cavity through the ventilation hole can be at least partially blocked by the dustproof baffle and stay in the accommodation cavity on the side of the dustproof baffle facing the ventilation hole, thereby reducing the dust in the air entering the accommodation space, so that the air entering the accommodation space through the ventilation hole on the base body is cleaner. According to the fourth aspect of the present application, a carrier is provided, which includes a box assembly and a support assembly, wherein the box assembly includes a box body and a connecting device arranged at the lower part of the box body, the connecting device is adapted to be connected with a connecting fitting of a vehicle seat; the support assembly is connected to the box body, and the support assembly includes at least two reinforcing frames, at least part of the at least two reinforcing frames are arranged along the longitudinal direction of the carrier. In some embodiments, the box assembly has a central plane extending in the height direction, the central line of the connecting device extending in the height direction is offset to the side of the central plane facing the longitudinal direction; the support assembly is provided with at least two reinforcing frames on the side of the central plane away from the central line. In some embodiments, the support assembly is provided with reinforcing frames on both sides of the central plane, and the reinforcing frames on both sides of the central plane are asymmetrically distributed; and / or, the number of reinforcing frames on the side of the support assembly facing the central line is less than the number of reinforcing frames on the side of the central plane away from the central line. In some embodiments, the reinforcing frames include a first reinforcing frame, a second reinforcing frame, and a third reinforcing frame, the first reinforcing frame and the second reinforcing frame are symmetrically distributed on both sides of the central plane, and the second reinforcing frame and the third reinforcing frame are located on the side of the central plane away from the central line. In some embodiments, the third reinforcing frame is located between the central plane and the second reinforcing frame. In some embodiments, the connecting device includes one or more inserts, and the inserts are adapted to be inserted into the connecting fitting of the vehicle seat. In some embodiments, the third reinforcing frame is offset to one side by a predetermined interval relative to the inserts in the longitudinal direction. In some embodiments, in the longitudinal direction, the distance between the third reinforcing frame and the second reinforcing frame is greater than the distance between the third reinforcing frame and the connecting device, and / or in the longitudinal direction, the distance between the third reinforcing frame and the central plane is less than the distance between the third reinforcing frame and the second reinforcing frame. In some embodiments, the connecting device includes two inserts, and the central plane is located between the two inserts. In some embodiments, the support assembly further includes a circumferential support, the circumferential support is perpendicular to the height direction of the box body and arranged around the box body, and the reinforcing frames are connected to the circumferential support. In some embodiments, the shape of the reinforcing frame corresponds to the shape of the bottom outer wall of the box body. In some embodiments, the box assembly further includes a base, the base includes a base body, the base body is located below the box body, and the connecting device is arranged on the base body.In some embodiments, the carrier further comprises a roof assembly and an outer cover; the roof assembly is attached to the box body, the roof assembly comprises a roof cover, the roof cover is used to cover the top opening of the box body; the outer cover covers the outer surface of the bracket assembly and the box body, the outer surface of the outer cover is provided with a first connector, the first connector is used to connect with the roof cover. In some embodiments, the carrier further comprises a fourth reinforcing frame, one end of the fourth reinforcing frame is connected with the second reinforcing frame, and the other end of the fourth reinforcing frame extends to the peripheral wall of the box body in a direction perpendicular to the second reinforcing frame. In some embodiments, the carrier further comprises a traction member, one end of the traction member is connected with the fourth reinforcing frame, and the other end of the traction member is connected with the outer cover corresponding to the first connector. In some embodiments, the position of the first connector corresponds to the side of the box body away from the center line; the fourth reinforcing frame is located on the side of the center surface away from the center line and extends from the second reinforcing frame to the direction away from the center surface. In some embodiments, the fourth reinforcing frame is biased in the transverse direction relative to the transverse center line extending in the longitudinal direction towards the connecting device. In some embodiments, the traction member extends from the first connector to the fourth reinforcing frame along the shortest path. In some embodiments, the base comprises a fixing member, a first end of the fixing member is connected with the bracket assembly, and a second end of the fixing member is connected with the plug-in member. In some embodiments, the plug-in member comprises a first plug-in member away from the second reinforcing frame and a second plug-in member close to the second reinforcing frame, and the second end of the fixing member is connected with the second plug-in member. In some embodiments, the first end of the fixing member is further connected with the base body. In some embodiments, the fixing member further comprises a third end, and the third end is connected with the base body. In some embodiments, the carrier further comprises a roof assembly and an outer cover; the roof assembly is attached to the box body, the roof assembly comprises a roof cover, the roof cover is used to cover the top opening of the box body; the outer cover covers the outer surface of the bracket assembly and the box body, the outer surface of the outer cover is provided with a first connector, the first connector is used to connect with the roof cover; the carrier further comprises a traction member, one end of the traction member is connected with the bracket assembly, and the other end of the traction member is connected with the outer cover corresponding to the first connector, and the connection position of the traction member and the bracket assembly is closer to the side where the connecting device is located in the transverse direction relative to the first connector. In the carrier provided in the fourth aspect of the present application, the bracket assembly comprises at least two reinforcing frames, at least part of the reinforcing frames are arranged in the longitudinal direction of the carrier, which can improve the structural strength of the carrier. When the connecting device is connected with the vehicle seat, the box assembly on the side where the connecting device is located can be better fixed, and the risk of deformation or damage when encountering external impact is smaller. The side of the box body away from the connecting device improves the structural strength of the box body. When the box body encounters impact, the reinforcing frame can play a supporting role, thereby reducing the risk of deformation or damage of the box body, and thus improving the safety of the carrier.The accompanying drawings, which are incorporated in and constitute a part of this application, serve to provide further understanding of the present application, the illustrative embodiments of the present application, and its description, and are used to explain the present application, and do not constitute improper limitations on the present application. In order to more clearly illustrate the technical solutions in the embodiments of the present application, the accompanying drawings needed to be used in the embodiment description will be briefly introduced as follows. Obviously, the accompanying drawings in the following description only represent some embodiments of the present application, and for those ordinary skilled in the art, other drawings can also be obtained from these drawings without any creative effort. Moreover, the drawings are not drawn in a 1:1 ratio, and the relative sizes of the various elements are only exemplarily drawn in the drawings, and are not necessarily drawn in true proportions.In the drawings: Fig. 1 shows a perspective view of a carrier according to an embodiment of the present application; Fig. 2 shows a side view of the carrier shown in Fig. 1; Fig. 3 shows a side view of a carrier according to an embodiment of the present application; Fig. 4 shows a perspective view of a connecting seat of the carrier in Fig. 3; Figs. 5 and 6 respectively show side views of a carrier according to an embodiment of the present application with a plug-in piece in a retracted state and an extended state; Figs. 7 and 8 respectively show perspective views of a carrier according to an embodiment of the present application with a plug-in piece in a retracted state and an extended state; Figs. 9 and 10 respectively show sectional views of a base of a carrier according to an embodiment of the present application with a plug-in piece in a retracted state and an extended state; Figs. 11 and 12 respectively show sectional views of a base of a carrier according to an embodiment of the present application with a clamping rod operating member in an initial position and a driving position; Fig. 13 shows a top view of a base of a carrier according to an embodiment of the present application; Fig. 14 shows a perspective view of a carrier according to an embodiment of the present application; Fig. 15 shows a side view of the carrier shown in Fig. 14; Fig. 16 shows a U1-U1 sectional view of Fig. 14; Fig. 17 shows a U2-U2 sectional view of Fig. 15; Fig. 18 shows a perspective view of a base of a carrier according to an embodiment of the present application; Fig. 19 shows a top view of a base of a carrier according to an embodiment of the present application; Figs. 20 and 21 show perspective views of a box body of a carrier according to an embodiment of the present application from different viewing angles; Figs. 22 and 23 show sectional views of a carrier according to an embodiment of the present application; Figs. 24 and 25 show perspective views of the carrier shown in Fig. 14 with a box body, a support assembly and a ceiling assembly omitted from different viewing angles; Fig. 26 shows a perspective view of a fan part and a wind guide part of a fan assembly shown in Fig. 24; Fig. 27 shows another perspective view of the fan part and the wind guide part shown in Fig. 26, wherein a wind guide housing of the wind guide part is in a disassembled state; Fig. 28 shows a perspective view of the fan part and the wind guide part in Fig. 24 separated from a base; Figs. 29 and 30 show perspective views of the carrier shown in Fig. 14 with a box body, a support assembly and a ceiling assembly omitted from different viewing angles, wherein a control part of a fan assembly is in a disassembled state; Fig. 31 shows a perspective view of the carrier shown in Fig. 14 with a base, a seat cloth and a second support omitted; Fig. 32 shows a perspective view of the fan part and the wind guide part in Fig. 31 separated from a box body; Figs. 33 to 39 show perspective views of a seat cloth according to an embodiment of the present application.Figure 40 is a front view of a carrier according to an embodiment of the present application; Figure 41 is a structural schematic view of the carrier of Figure 40 from one angle; Figure 42 is a structural schematic view of the carrier of Figure 40 from another angle; Figure 43 is a structural schematic view of the cooperation between the box body and the support assembly of Figure 40; Figure 44 is a top view of the carrier of Figure 40; Figure 45 is an exploded view of the cooperation between the box body and the support assembly of Figure 40 from one angle; Figure 46 is an exploded view of the cooperation between the box body and the support assembly of Figure 40 from another angle; Figure 47 is a structural schematic view of the support assembly of Figure 40; Figure 48 is a structural schematic view of one frame structure of Figure 47; Figure 49 is a structural schematic view of another frame structure of Figure 47; Figure 50 is a structural schematic view of the cooperation between the support assembly and the base of Figure 40; Figure 51 is a bottom view of the carrier of Figure 40; Figure 52 is a rear view of a carrier according to another embodiment of the present application; Figure 53 is a structural schematic view of the cooperation between the support assembly and the outer seat cloth of Figure 52; Figure 54 is a structural schematic view of the outer seat cloth of Figure 53; Figure 55 is a structural schematic view of the cooperation between the support assembly and the box body of Figure 53; Figure 56 is an exploded view of the cooperation between the support assembly and the box body of Figure 53; Figure 57 is a structural schematic view of the cooperation between the base body and the fixing member according to another embodiment of the present application; and Figure 58 is a structural schematic view of the cooperation between the fixing member and the support assembly of Figure 57.

[0002] 1000, carrier; 100, box assembly; 10, box body; 101, bottom; 1011, ventilation passage; 1011a, air inlet groove; 102, peripheral wall; 1021, peripheral wall long side; 1022, peripheral wall short side; 1023, air permeable hole; 1024, opening portion; 103, fixing groove; 104, fan assembly receiving groove; 105, locking groove; 106, through hole; 11, accommodation space; 110, top opening; 12, side impact protection structure; 13, seat cloth; 1301, air permeable opening; 1302, through opening; 1303, air hole matrix; 13031, air hole; 131, outer seat cloth; 1311, outer side wall cloth; 13111, handle insertion hole; 1312, outer bottom wall cloth; 1313, connecting belt; 132, inner seat cloth; 1321, inner side wall cloth; 1322, inner bottom wall cloth; 133, first connector; 1331, clasp portion; 1332, connecting ring; 14, locking cover; 15, traction member;

[0003] 20, support assembly; 21, first support; 2101, first edge; 2102, second edge; 211, connecting base; 22, second support; A22, reinforcing frame; 221, first reinforcing frame; 222, second reinforcing frame; 223, third reinforcing frame; 224, fourth reinforcing frame; 2241, connecting piece; 23, connecting hole;

[0004] 300, roof assembly; 31, roof frame; 311, roof rod; 3111, abutting portion; 3112, end rod portion; 3113, center rod portion; 312, pivot cylinder; 3121, arc-shaped convex wall; 32, connecting seat; 321, limiting seat; 3211, limiting side wall; 32111, arc-shaped concave wall; 32111a, arc-shaped concave wall top end; 32111b, arc-shaped concave wall bottom end; 32112, stop portion; 32112a, vertical side wall; 32112b, inclined side wall; 322, pivot seat; 3221, pivot seat base; 3222, pivot shaft;

[0005] 40, base; 401, receiving cavity; 4011, air inlet cavity; 40111, leakage hole; 4012, air guide cavity; 40121, air guide mechanism; 41, connecting device; 411, plug-in piece; 4111, plug-in portion; 4112, connecting portion; 412, plug-in piece operating piece; 42, clamping rod; 421, clamping rod operating piece; 43, base body; 4301, folding groove; 4302, folding groove; 4303, positioning point; 431, dustproof baffle; 4313, through hole; 4315, through hole; 432, ventilation hole; 435, clamping portion; 4351, L-shaped plate; 4352, reinforcing rib plate; 44, fixing piece; 441, first end; 442, second end; 443, third end; 444, first fastener; 445, second fastener; 446, third fastener;

[0006] 500、 fan assembly; 51、 fan unit; 5112、 wire harness; 519、 fan housing; 5191、 suction port; 51911、 filter screen; 5192、 discharge port; 52、 control unit; 521、 PCB circuit board; 5212、 touch switch; 522、 control button; 523、 charging connector; 526、 fixed inner cover; 5263、 through hole; 5265、 clamping groove; 5266、 fourth fastener; 527、 fixed outer cover; 5271、 through hole; 5274、 sleeve; 528、 clamping structure; 5281、 clamping arm; 5282、 clamping recess; 529、 return spring; 55、 air guide unit; 5501、 air inlet; 5502、 air outlet; 551、 air guide housing; 5510、 air guide channel; 5511、 first housing portion; 55110、 bottom opening; 5512、 second housing portion; 591、 fastener; 592、 fastener; 593、 sealing ring;

[0007] 60. Handle. Specific Embodiments To make the above-mentioned objects, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below. The following embodiments of this application provide a carrier 10000. The carrier 1000 can be used to carry live animals such as pets, and may be, for example, but not limited to, a pet carrier or pet basket. Depending on the usage scenario, the carrier 1000 can also be appropriately used to carry items, such as vegetables and fruits. Referring to Figures 1, 2, 3, 5 to 8, 14, and 15, the carrier 1000 includes a box assembly 100, which defines a accommodating space 11 for accommodating live animals such as pets. The accommodating space 11 has a top opening 110 for allowing a live animal to enter and exit the accommodating space. The enclosure assembly 100 may include an enclosure body 10, a support assembly 20, and a base 40. The enclosure body 10 has a bottom 101 and a peripheral wall 102 connected to the bottom 101, the peripheral wall 102 extending upward from the periphery of the bottom 101. The bottom 101 and the peripheral wall 102 together define the accommodating space 11 for the pet to sit in and the top opening 110. The enclosure body 10 may be made of foamed materials such as expanded polypropylene (EPP), expanded polystyrene (EPS), expanded polyethylene (EPE), and expanded ethylene (EPO). Of course, the material of the enclosure body 10 is not limited to the examples mentioned above. In this embodiment, when viewed from the top of the enclosure body 10, the enclosure body 10 may be generally rectangular, having a longitudinal direction D1 and a transverse direction D2, the length of the enclosure body 10 in the longitudinal direction D1 being greater than its length in the transverse direction D2. The peripheral wall 102 of the housing body 10 includes a pair of opposing long sides 1021 extending along the longitudinal direction D1 and a pair of short sides 1022 extending along the transverse direction D2. Of course, in some alternative embodiments, the housing body 10 can be constructed in shapes other than rectangles, such as, but not limited to, various equilateral shapes or other shapes. Referring to FIG1, in some embodiments, a side impact protection structure 12 may be provided on the inner and / or outer surfaces of the peripheral wall 102, which serves to buffer impacts.In addition, at least the circumferential wall 102 can be provided with air vents 1023 - see FIG. 1, FIG. 2, FIG. 3, FIG. 5 to FIG. 8, FIG. 14, FIG. 15, the bracket assembly 20 is connected to the box body 10, used to enhance the structural strength of the box body 10. The bracket assembly 20 may, for example, be a frame structure made of metal. In some embodiments, the bracket assembly 20 includes a first bracket 21 and two second brackets (also known as reinforcing frames) 22. The first bracket 21 can be a rectangle formed by a pipe material, having a longitudinal direction D1 and a transverse direction D2, including two opposite long sides 2101 (also known as first sides) and two opposite short sides 2102 (also known as second sides). Each second bracket 22 can be a U-shaped bracket formed by a pipe material. The two ends of each second bracket 22 are connected to the first bracket 21, respectively, and the two second brackets 22 are arranged separately from each other in the longitudinal direction D1. The first bracket 21 is combined with the box body 10 and is arranged around the outside of the circumferential wall 102 of the box body 10, and is close to the top opening 110. Each second bracket 22 is combined with the bottom outer wall and the circumferential wall outside of the box body 10, and is at least partially embedded in the fixing groove 103 of the bottom outer wall and the circumferential wall outside of the box body 10. The profile of each of the first bracket 21 and the second bracket 22 corresponds to the profile of the box body 10, respectively. In this way, the bracket assembly 20 can provide stable support for the box body 10, and can improve the impact resistance of the box body 10. See FIG. 1, FIG. 2, FIG. 3, FIG. 5 to FIG. 8, FIG. 14, FIG. 15, the base 40 is located below the box body 10 and is fixed to the bottom 101 of the box body 10. In some embodiments, the base 40 can cover the entire bottom 101 of the box body 10. In some embodiments, the base 40 can cover part of the bottom 101 of the box body 10. The base 40 is beneficial to improve the structural strength of the bottom 101 of the box body 10. In some embodiments, the base 40 can include a base body 43, which can be made of but not limited to plastic. The base body 43 is located below the box body 10 and is fixed to the box body 10. The base body 43 covers the entire bottom 101, for example. In some embodiments, see FIG. 1, FIG. 2, FIG. 5 to FIG. 13, the base 40 can also include a connecting device 41, which can be provided on one side of the base body 43. The connecting device 41 may, for example, be detachably connected with the connecting accessory of the vehicle.The connection fittings of the vehicle can be located, for example, at the lower part of the backrest of the vehicle seat near the seat cushion. When the connection device 41 is connected to the connection fittings of the lower part of the backrest of the vehicle seat, the carrier 1000 can be placed on the vehicle seat. The connection device 41 can include one or more insertion pieces 411 distributed on one side of the base body 43, and correspondingly, the connection fittings on the vehicle can include one or more insertion interfaces of the same number as the insertion pieces 411 in the connection device 41, so as to be suitable for inserting the one or more insertion pieces 411 of the base body 43 into the corresponding one or more insertion interfaces on the vehicle. Each insertion piece 411 includes an insertion portion 4111. The insertion portion 4111 is directly in contact with and fixedly inserted into the insertion interface of the vehicle. When the connection device 41 is connected to the connection fittings of the vehicle seat, the insertion portion 4111 is inserted into the insertion interface and can be accommodated in the insertion interface. Each insertion piece 411 can also include a connecting portion 4112. The connecting portion 4112 can be between the base body 43 and the insertion portion 4111, and is configured to connect the insertion portion 4111 to one side of the base body 43. When the connection device 41 is connected to the connection fittings of the vehicle seat, the connecting portion 4112 can not be accommodated in the insertion interface, but outside the insertion interface. In the examples shown in FIGS. 5-13, the connecting portion 4112 can include a pivoting mechanism, and the insertion portion 4111 is pivoted to the base body 43 via the pivoting mechanism. However, in other examples, the insertion portion 4111 can be connected to the base body 43 via a different connection manner, and correspondingly, the connecting portion 4112 can include a connecting portion of a different configuration to connect the base body 43 and the insertion portion 4111. Referring to FIGS. 9-13, in some embodiments, each insertion piece 411 (and its insertion portion 4111) has a folded state of being accommodated in the folding groove 4301 of the base body 43, and an unfolded state of protruding from the folding groove 4301 of the base body 43 and protruding from the side wall of the base body 43. When it is not necessary to fix the carrier 1000 on the vehicle seat, the insertion piece 411 (and its insertion portion 4111) can be in the folded state. When it is necessary to fix the carrier 1000 on the vehicle seat, the insertion piece 411 (and its insertion portion 4111) can be in the unfolded state. In some embodiments, a user can manually fold the insertion piece 411 (and its insertion portion 4111) to the unfolded state or the folded state. In some embodiments, one side of the base body 43 can be provided with an insertion piece operating member 412 connected to the insertion piece 411 via a mechanical structure arranged at the bottom of the base body 43.The plug member operating member 412 can drive the plug member 411 (and the plug portion 4111 thereof) from the retracted state to the extended state via the mechanical structure described above during movement from the initial position to the driving position, and can drive the plug member 411 (and the plug portion 4111 thereof) from the extended state to the retracted state via the mechanical structure described above during movement from the driving position to the initial position. The user can switch the plug member 411 (and the plug portion 4111 thereof) between the retracted state and the extended state by the plug member operating member 412. In some embodiments, referring to FIGS. 1 and 2, one or more plug portions 4111 of the connection device 41 can be distributed centrally on one side of the base body 43. Generally, the connection fitting of a vehicle can include two plug interfaces (such as ISOFIX sockets, LATCH sockets, or seat belt sockets, etc.), which are distributed horizontally and centrally under the backrest of the vehicle seat. Accordingly, in some embodiments, referring to FIGS. 1 and 2, the connection device 41 can include two plug members 411 adapted to be plugged into the two plug interfaces of the vehicle. The two plug members 411 have corresponding two plug portions 4111. In the example of FIGS. 1 and 2, the connection device 41 is distributed centrally on the base body 43. When viewed in the transverse direction D2, the first center line C1 of the two plug portions 4111 of the connection device 41 in the height direction D3 coincides with the second center line C2 of the base body 43 in the height direction D3 (i.e., the center line of the box assembly 100, which can be located in the central plane of the box assembly 100 perpendicular to the longitudinal direction D2). Among them, when viewed in the transverse direction D2, the two plug members 411 (and the two plug portions 4111) can be axisymmetric relative to the first center line C1. In embodiments in which one or more plug portions 4111 of the connection device 41 are distributed centrally on one side of the base body 43, when the connection device 41 is connected to the connection fitting of the vehicle, the carrier 1000 will be placed at the central position of the seat. However, in such cases, when the length of the box body 10 in the longitudinal direction D1 is large, when the plug member 411 is plugged into the plug interface under the backrest, the side of the box body 10 close to the door is likely to interfere with the door or other vehicle parts around the door, affecting the smooth opening and closing of the door or hindering the smooth fixing of the carrier 1000. In some embodiments, referring to FIGS. 5 to 13, one or more plug portions 4111 of the connection device 41 can be biased toward one side of the base body 43.When viewed from the side of the carrier 1000 provided with the connection device 41 (viewed in the transverse direction D2), in the state of use, the first center line C1 of the one or more plug-in portions 4111 of the connection device 41 in the height direction D3 is offset to one side of the second center line C2 of the base body 43 or the box body 10 in the height direction D3 by a first distance di in the longitudinal direction D1, wherein the first center line C1 of the one or more plug-in portions 4111 of the connection device 41 in the height direction D3 can be a common center line of the connection device 41 in the height direction D3 that passes through the common geometric center of the one or more plug-in portions 4111 in the connection device 41 in the state of use. The state of use of the connection device 41 refers to the state when the connection device 41 is connected to the connection fitting of the vehicle, for example, can be the state when each plug-in portion 411 (and the plug-in portion 4111) in the connection device 41 is in the unfolded state. For example, when the connection device 41 includes only one plug-in portion 4111, the first center line C1 can be an axis in the height direction D3 that passes through the geometric center of the single plug-in portion 4111 in the state of use / unfolded state; when the connection device 41 includes an odd number of plug-in portions 4111 that are equally spaced and arranged in a row, the first center line C1 can be an axis in the height direction D3 that passes through the geometric center of the middle one of the odd number of plug-in portions 4111 in the state of use / unfolded state; when the connection device 41 includes an even number of plug-in portions 4111 that are equally spaced and arranged in a row, the first center line C1 can be a center line in the height direction D3 that passes through the midpoint of the line connecting the two geometric centers of the two middle plug-in portions 4111 of the even number of plug-in portions 4111 in the state of use / unfolded state. For example, referring to FIGS. 5-13, the connection device 41 can include two plug-in portions 4111 horizontally arranged on one side of the base body 43. In this case, the first center line C1 of the two plug-in portions 4111 can be a center line in the height direction D3 that passes through the midpoint of the line connecting the two geometric centers of the two plug-in portions in the unfolded state. When viewed in the transverse direction D2, the first center line C1 of the two plug-in portions 4111 in the height direction D3 is offset to one side of the second center line C2 of the base body 43 in the height direction D3 along the distribution direction (the longitudinal direction D1) of the two plug-in portions 4111 by a first distance di - In the examples shown in FIGS. 5-13, when viewed in the transverse direction D2, the two plug-in portions 4111 can have an axisymmetric arrangement, so that the first center line C1 can be the axis of symmetry of the two plug-in portions 4111, i.e., the two plug-in portions 4111 are axisymmetric with respect to the first center line C1.Referring to FIG. 5, FIG. 7, FIG. 9, each of the two docking portions 4111 can have a folding state pivoted from the outer side to the center side of the two docking portions 4111 to be received into the base body 43, in which the self center line C11 of each docking portion 4111 passing through the geometric center of itself in the height direction D3 is offset outward relative to the first center line C1 by a second distance d2o Referring to FIG. 6, FIG. 8, FIG. 10, each of the two docking portions 4111 can have an unfolded state pivoted from the center side to the outer side of the two docking portions 4111 to be unfolded out of the base body 43, in which the self center line C12 of each docking portion 4111 passing through the geometric center of itself in the height direction D3 is offset outward relative to the first center line C1 by a third distance d3, wherein the second distance d2 is less than the third distance d3o In other examples, the docking portions 4111 in the connection device 41 can have different switching modes between the folding state and the unfolded state, for example, the two docking portions 4111 arranged in axial symmetry can also be pivoted from the outer side to the center side to the unfolded state, and be pivoted from the center side to the outer side to the folding state, for example, the length direction of one or more docking portions 4111 can be arranged along the transverse direction D2, and can have a folding state received into the inside of the base body 43 along the transverse direction D2, and an unfolded state slid out of the base body 43 along the transverse direction D2, and the like. In various embodiments with different switching modes between the folding state and the unfolded state, the first center line C1 of the connection device 41 can be determined by the center line passing through the common geometric center of all docking portions 4111 in the connection device 41 in the use state in the height direction D3. The first center line C1 of one or more docking portions 4111 of the connection device 41 can be offset to either side in the longitudinal direction D1 relative to the second center line C2 of the base body 43 or the box body 10. For example, in the example shown in FIG. 5 to FIG. 8, when viewed from the side of the carrier 1000 provided with the docking portions 411, the first center line C1 of the two docking portions 4111 of the two docking portions 411 is offset on the base body 43 to the right side by a first distance dl o In this way, when the carrier 1000 is fixed on the seat on the right-hand side of the vehicle, the side of the carrier 1000 close to the right side door can be at a greater distance from the right side door and other vehicle components, so as not to easily interfere with the right side door and other vehicle components.In other examples, similarly, the first center line C1 of the two insertion portions 4111 can also be offset on the base body 43 by a distance towards the left side when viewed from the side of the carrier 1000 provided with the insertion portion 411. In this way, when the carrier 1000 is fixed on the seat on the left-hand side of the vehicle, the side of the carrier 1000 close to the left door of the vehicle can be at a greater distance from the vehicle components such as the left door, thereby being less likely to interfere with the vehicle components such as the left door. In some embodiments, referring to FIGS. 9-13, the bottom of the base body 43 can be provided with a clamping rod 42. When the carrier 1000 is placed on the seat of the vehicle or the trolley, the seat of the vehicle or the trolley can be provided in advance with a fixing seat (not shown in the drawings), and the fixing seat can be provided with a clamping mechanism (not shown in the drawings) suitable for clamping with the clamping rod 42, thereby fixing the carrier 1000 on the fixing seat. In some embodiments, the clamping rod 42 has a retracted state accommodated in the base body 43 and an expanded state protruding from the bottom wall of the base body 43. One side of the base body 43 can be provided with a clamping rod operating member 42L. The clamping rod operating member 421 is connected to the clamping rod 42 via a mechanical structure arranged at the bottom of the base body 43. The clamping rod operating member 421 can drive the clamping rod 42 to switch from the retracted state to the expanded state via the mechanical structure during movement from the initial position to the driving position, and can drive the clamping rod 42 to switch from the expanded state to the retracted state via the mechanical structure during movement from the driving position to the initial position. When it is not necessary to fix the carrier 1000 to the fixing seat, the user can make the clamping rod 42 in the retracted state by operating the clamping rod operating member 421. When it is necessary to fix the carrier 1000 to the fixing seat, the user can make the clamping rod 42 in the expanded state by operating the clamping rod operating member 421. In some embodiments, referring to FIGS. 33-39, the box assembly 100 can further include a seat cloth 130. The box body 10 and the support assembly 20 can be covered by the seat cloth 130.In some embodiments, referring to FIG. 33 and FIG. 34, the seat cloth 13 can include an outer seat cloth 131 covering the outside of the box body 10 and the support assembly 20, and an inner seat cloth 132 covering the inside of the box body 10. The outer seat cloth 131 can include an outer side wall cloth 131L covering the outer side wall of the box body 10 and the support assembly 20, and exposed to the outside, and an outer bottom wall cloth 1312o covering the outer bottom wall of the box body 10 and sandwiched between the box body 10 and the base body 43. The inner seat cloth 132 can include an inner side wall cloth 132L covering the inner side wall of the box body 10, and an inner bottom wall cloth 1322o covering the inner bottom wall of the box body 10. In some embodiments, the seat cloth 13 can additionally include an inner bottom pad (not shown) having a shape adapted to the inner bottom wall cloth 1322, and can be placed on the inner bottom wall cloth 1322 for use. The inner bottom pad can have a multi-layer sandwich structure and / or have a breathable structure to facilitate comfort and breathability in use. In some embodiments, referring to FIG. 1 to FIG. 8, the carrier 1000 can further include a canopy assembly 300 attachable to the box assembly 100 for covering the top opening 110. The canopy assembly 300 can include a canopy cloth (not shown), two U-shaped canopy frames 31, and two connecting seats 32 connected between the two U-shaped canopy frames 31. The canopy cloth is connected with the two canopy frames 31. The canopy cloth can include a windproof cloth, a rainproof cloth, a sunshade cloth, and / or a breathable mesh cloth, etc. according to different purposes of use. The end of each canopy frame 31 is pivoted with a respective connecting seat 32, and can be pivoted between a closed position and a maximum open position. Referring to FIG. 1 to FIG. 8, the connecting seat 32 has a longitudinal direction D1 and a height direction D3 orthogonal to the longitudinal direction D1 and a transverse direction D2. The connecting seat 32 includes a limiting seat 321 located in the middle in the longitudinal direction D1, and two pivot seats 322 respectively located on both sides of the limiting seat 321. The pivot seat 322 includes a pivot seat base 3221 and a pivot shaft 3222 extending away from the box body 10 from the center of the pivot seat base 3221. Each canopy frame 31 includes a U-shaped canopy rod 311 and a pivot cylinder 312 connected to the end of the canopy rod 311, and the pivot cylinder 312 of each canopy frame 31 is sleeved on the corresponding pivot shaft 3222, so that each canopy frame 31 is pivoted with the corresponding connecting seat 32. One side of the pivot seat base 3221 is connected to the limiting seat 321, and the pivot seat base 3221 is recessed relative to the limiting seat 321 towards the box body 10, so that when the canopy frame 31 is pivoted to the connecting seat 32, the outer side of the pivot cylinder 312 of the canopy frame 31 is substantially flush with the outer side of the limiting seat 321.The roof assembly 300 can be switched between the maximum open position and the closed position by pivoting of the roof frame 31 about the pivot 3222, so as to achieve the purposes of safety / shading / rain-proofing / mosquito-proofing and convenient storage. Referring to FIGS. 1-8, the limiting side wall 3211 is provided on both sides of the limiting seat 321. The limiting side wall 3211 can have a circular-arc-shaped concave wall 3211L extending along a circular arc with the pivot 3222 as the center. The pivot cylinder 312 has a circular-arc-shaped convex wall 3121 extending along a circular arc with the pivot 3222 as the center, so that when the roof frame 31 is pivoted with the corresponding connecting seat 32, the circular-arc-shaped convex wall 3121 of the pivot cylinder 312 of the roof frame 31 can slide against the circular-arc-shaped concave wall 3211L of the corresponding connecting seat 32 and slide and pivot between the maximum open position and the closed position along the circular-arc-shaped concave wall 3211L. The limiting side wall 3211 also has a stop portion 32112, which can be connected with the top end 3211 a of the circular-arc-shaped concave wall 3211L. The roof bar 311 has an abutting portion 3111 at a position adjacent to the pivot cylinder 312. When the roof frame 31 is pivoted about the pivot 3222 and opened to the maximum open position, the stop portion 32112 abuts against the abutting portion 3111 on the roof bar 311 to prevent further pivoting opening of the roof frame 31. In this way, the abutting cooperation between the stop portion 32112 and the abutting portion 3111 on the roof bar 311 defines the maximum open angle of the roof frame 31 relative to its horizontal closed position in the maximum open position. In some embodiments, referring to FIGS. 1-2 and 14-15, the limiting side wall 3211 can have a substantially vertical arrangement. The connecting line between the top end 3211 a and the bottom end 3211 b of the circular-arc-shaped concave wall 3211L is substantially parallel to the height direction D3, and the stop portion 32112 includes a vertical side wall 32112a extending upward from the top end 3211 a of the circular-arc-shaped concave wall 3211L, which is also substantially parallel to the height direction D3. The position of the vertical side wall 32112a is adapted such that when the abutting portion 3111 on the roof bar 311 abuts against the vertical side wall 32112a, the roof frame 31 is in a substantially vertical state, i.e., the roof frame 31 is opened to a maximum open angle of 90 degrees relative to its horizontal closed position in the maximum open position. In some embodiments, referring to FIGS. 3-8, the limiting side wall 3211 can have a substantially inclined arrangement toward the center side relative to the height direction D3.In the longitudinal direction D1, the top end 32111a of the arc-shaped concave wall 32111 is offset by a distance towards the center side of the guide 32 compared to the bottom end 32111b of the arc-shaped concave wall 32111, and the stop portion 32112 includes an inclined side wall 32112b extending obliquely from the top end 32111a of the arc-shaped concave wall 32111 towards the center side of the guide 32, and the top end of the inclined side wall 32112b is also offset by a distance towards the center side of the guide 32 compared to the bottom end. The position and the inclination angle of the inclined side wall 32112b are adapted such that when the abutting portion 3111 on the ceiling rod 311 abuts against the inclined side wall 32112b, the ceiling frame 31 is in the maximum open position and is opened to a maximum opening angle 0 of more than 90 degrees (i.e. an obtuse angle) relative to its horizontal closed position. In this way, the maximum rotatable angle of the ceiling frame 31 can be increased, thereby increasing the maximum openable space of the ceiling assembly 300, and the pet in the carrier 1000 can stand up without easily pressing the pet, thereby improving the comfort of the pet. In the example shown in FIG. 3, the ceiling frame 31 can be opened to a maximum opening angle 0 of 135 degrees relative to its horizontal closed position, but in other examples, the maximum opening angle 0 can be a larger or smaller obtuse angle. In some embodiments, referring to FIGS. 3-8, the end rod portion 3112 of the ceiling rod 311 is bent and transitions between the end rod portion 3112 and the central rod portion 3113 other than the end rod portion 3112. Referring to FIG. 3, in the closed position, the end rod portion 3112 of the ceiling rod 311 can be bent upwards relative to the central rod portion 3113 other than the end rod portion 3112, so as to facilitate the compact arrangement of related components. In some embodiments, referring to FIGS. 1-8, a connecting base 211 can be arranged at the middle position of each of the two long sides 2101 of the first support 21. The two connecting seats 32 are respectively detachably connected to the corresponding connecting bases 211, which allows the ceiling assembly 300 to be detached from the box assembly 100o In some embodiments, referring to FIGS. 5-8, and applicable to FIGS. 40-42 and 52, the carrier 1000 can further include a handle 60. The handle 60 can have a generally U-shaped shape. The two ends of the handle 60 are respectively connected to the box assembly 100 or the ceiling assembly 300, so that the user can lift the carrier 1000 by the handle 60. In the example shown in FIGS. 5-8, the two ends of the handle 60 are respectively connected to the two connecting seats 32. In some embodiments, the two ends of the handle 60 are respectively fixedly connected or detachably connected to the outside of the two connecting seats 32, and the handle 60 is arranged substantially vertically, i.e. the handle 60 extends substantially perpendicular to the longitudinal direction D1 of the box body 10.In some other embodiments, the two ends of the handle 60 can be respectively pivotally connected to the outer sides of the two connecting seats 32, so as to allow the handle 60 to switch between a vertical use position and a collapsed position with a larger unfolding degree (e.g. unfolded to a height close to the bottom surface). In some embodiments, correspondingly, the outer side wall 1311 of the seat cloth 13 can be provided with two handle insertion holes 13111 at positions corresponding to the two ends of the handle 60, so as to facilitate the handle 60 connected to the two connecting seats 32 to extend outwards through the handle insertion holes 13111. In some other embodiments, the two ends of the handle 60 can also be connected to different positions, such as the ribs of the ceiling assembly 300 for supporting the ceiling cloth. In some embodiments, referring to FIGS. 1-8, 14-17, 20, 21, 31, 32, each long side 1021 and each short side 1022 of the peripheral wall 102 can be provided with a plurality of air permeable holes 1023, and air can be discharged from each air permeable hole 1023, so as to form a more uniform air flow in the accommodation space 11, further improving the air permeability and ventilation of the interior of the accommodation space 11. Of course, in some alternative embodiments, at least one of the two long sides 1021 and the two short sides 1022 can not be provided with air permeable holes 1023. Furthermore, referring to FIGS. 20, 21, 27, 28, in some embodiments, a plurality of air permeable holes 1023 can also be provided on the bottom 101 of the box body 10, so as to further facilitate the circulation of air inside the accommodation space 11 and external air. These air permeable holes 1023 can be covered by the seat cloth 13. In some embodiments, the carrier 1000 can also be provided with a ventilation structure at the base 40. Referring to FIGS. 14-25, a receiving cavity 401 is formed between the base body 43 and the box body 10, and the base body 43 is provided with ventilation holes 432 that communicate the receiving cavity 401 with external air. As shown in FIGS. 24 and 25, a plurality of ventilation holes 432 can be provided on multiple sides of the base body 43. Of course, in some alternative embodiments, a plurality of ventilation holes 432 can also be provided on only one side of the base body 43. The shape, size and number of the ventilation holes 432 can be designed as needed. In some embodiments, referring to FIGS. 16-19, 24, 25, 28-30, a dustproof baffle 431 can also be provided on the base body 43 at a position corresponding to the ventilation hole 432 in the receiving cavity 401, and the dustproof baffle 431 extends upward from the bottom wall of the base body 43.The dustproof baffle 431 can be arranged around the area where the ventilation hole 432 is located to separate the accommodation cavity 401 into an air inlet cavity 4011 on the edge side and an air guide cavity 4012 on the center side. The air inlet cavity 4011 is in communication with the outside air through the ventilation hole 432. A ventilation channel 1011 is left between the top of the dustproof baffle 431 and the bottom of the box body 10. In this way, the sand and dust in the outside air entering through the ventilation hole 432 can be partially blocked by the dustproof baffle 431 and left in the air inlet cavity 4011, and the air can enter the air guide cavity 4012 from the air inlet cavity 4011 through the ventilation channel 1011 between the dustproof baffle 431 and the bottom of the box body 10. In some embodiments, referring to FIGS. 19 and 28, one or more leakage holes 4011L can be formed in the bottom wall of the air inlet cavity 4011, so that the sand and dust blocked by the dustproof baffle 431 and falling on the bottom wall of the air inlet cavity 4011 can be discharged through the leakage holes 4011L. The bottom wall of the air inlet cavity 4011 can have a lower part and a higher part, for example, can have an inclined structure, and the leakage holes 4011L can be arranged at the lowest part of the bottom wall of the air inlet cavity 4011 to facilitate the accumulation and discharge of sand and dust. In some embodiments, the top of the dustproof baffle 431 is flush with and abuts against the bottom surface of the bottom 101 of the box body 10, and the ventilation channel 1011 includes one or more air inlet grooves 1011a formed in the bottom surface of the box body 10. The air inlet grooves 1011a are recessed from the bottom surface of the box body 10 away from the base body 43. The air inlet grooves 1011a can extend in a direction from the ventilation hole 432 towards the air guide cavity 4012. Part (end and / or middle) of the air inlet grooves 1011a extends into the air inlet cavity 4011, and the other part (end and / or middle) extends into the air guide cavity 4012. In this way, air can enter the air guide cavity 4012 from the air inlet cavity 4011 through the air inlet grooves 1011a. In the examples shown in FIGS. 14-28, a plurality of ventilation holes 432 are respectively arranged on the three side walls of the base body 43, and a plurality of air inlet grooves 1011a are respectively arranged at positions opposite to the three side walls on the bottom surface of the box body 10. As can be seen from the drawings, the air inlet grooves 1011a can have a structure with one end extending into the air inlet cavity 4011 and the other end extending into the air guide cavity 4012. However, the air inlet grooves 1011a can also have a structure with one or both ends extending into the air inlet cavity 4011 and the middle part extending into the air guide cavity 4012, for example. In other examples, the air inlet grooves 1011a can also have other structures as long as they can allow air to enter the air guide cavity 4012 from the air inlet cavity 4011 through the air inlet grooves 1011a.Further, the outer bottom wall cloth 1312 of the seat cloth 13 can be clamped between the dustproof baffle 431 and the bottom of the box body 10, so that the top of the dustproof baffle 431 is tightly abutted to the bottom surface of the box body 10 through the seat cloth 13. The outer bottom wall cloth 1312 of the seat cloth 13 covers the air inlet groove 1011a, and at least part of the area of the outer bottom wall cloth 1312 of the seat cloth 13 in the air inlet cavity 4011 and at least part of the area in the air guide cavity 4012 in the area covering the air inlet groove 1011a is air-permeable cloth, such as mesh cloth and the like. In some embodiments, the outer bottom wall cloth 1312 is air-permeable cloth at least in the area covering the air inlet groove 1011a. In some embodiments, referring to FIG. 33, the outer bottom wall cloth 1312 of the seat cloth 13 clamped between the base body 43 and the box body 10 can all be air-permeable cloth, and the outer side wall cloth 1311 of the seat cloth 13 exposed outside the base body 43 can be ordinary cloth, such as knitted cloth, woven cloth, non-woven cloth, or can also be air-permeable cloth. In this way, air needs to first pass through the seat cloth 13 from the air inlet cavity 4011 into the air inlet groove 1011a, and then pass through the seat cloth 13 from the air inlet groove 1011a into the air guide cavity 4012, by making the air pass through the seat cloth 13 twice, the seat cloth 13 can further filter out dust in the air. In addition, in other variant examples, the ventilation channel 1011 can also include a notch or a through hole opened at the top end of the dustproof baffle 431, or the dustproof baffle 431 can not be tightly abutted to the bottom of the box body 10 but leave a gap between the box body 10, which serves as the above-mentioned ventilation channel 1011o air guide cavity 4012 and the accommodation space 11 can be communicated through the air guide mechanism 40121, thereby allowing external air entering the receiving cavity 401 from the ventilation hole 432 to be sent into the accommodation space 11 through the air guide mechanism 40121. In some embodiments, the inner side wall of the box body 10 is provided with an opening portion 1024 at a position corresponding to the outlet of the air guide mechanism 40121, and the inner side wall cloth 1321 is provided with an air-permeable opening 1301 in the area corresponding to the opening portion 1024. Among them, the inner side wall cloth 1321 in the air-permeable opening 1301 can be air-permeable cloth, or the air-permeable opening 1301 can be open without being covered by cloth. In some embodiments, the air guide mechanism 40121 can include an opening or a through hole penetrating through the bottom of the box body 10 and communicating the air guide cavity 4012 and the accommodation space 11. In some embodiments, the air guide mechanism 40121 can include a channel extending from the air guide cavity 4012 to the opening or hole on the side wall of the box body 10 to communicate the air guide cavity 4012 and the accommodation space 11.In some embodiments, referring to FIG. 24 and FIG. 25, the air guiding mechanism 40121 can include a fan assembly 500 for facilitating the suction of air into the accommodation space 11 from the air guiding cavity 4012. The fan assembly 500 can include a fan portion 51, a control portion 52 and an air guiding portion 55. Optionally, the fan assembly 500 can include a battery portion (not shown in the figures). The control portion 52 can be electrically connected to the battery portion and the fan portion 51 respectively. The battery portion is configured to supply power to a motor of the fan portion 51 so as to rotate a fan blade (not shown in the figures) of the fan portion 51. FIG. 26 shows a perspective view of the fan portion 51 and the air guiding portion 55 of the fan assembly 500 shown in FIG. 24. FIG. 27 shows another perspective view of the fan portion 51 and the air guiding portion 55 shown in FIG. 26, wherein the air guiding housing 551 of the air guiding portion 55 is in an exploded state. FIG. 28 shows a perspective view of the fan portion 51 and the air guiding portion 55 separated from the base 40 in FIG. 24. FIG. 29 and FIG. 30 show perspective views of the carrier 1000 shown in FIG. 14 with the box body 10, the support assembly 20 and the ceiling assembly 300 omitted, wherein the control portion 52 of the fan assembly 500 is in an exploded state. In the present embodiment, the fan portion 51 includes a fan housing 519, a motor and a fan blade installed in the fan housing 519. In FIG. 24 and FIG. 25, the fan housing 519 is in a volute shape and is located substantially at a middle position of the air guiding cavity 4012. The motor and the fan blade of the fan portion 51 are hidden from view by the fan housing 519. Referring to FIG. 16 and FIG. 17 again, the fan housing 519 includes a suction port 5191 and an exhaust port 5192. The suction port 5191 is arranged downwardly, and the exhaust port 5192 is arranged at a side of the fan housing 519. When the motor of the fan portion 51 is powered, the fan blade rotates so as to draw external air into the air guiding cavity 4012 through the ventilation hole 432 and the ventilation channel 1011, and then into the suction port 5191 and out of the exhaust port 5192. It can be understood that, although the fan portion 51 is exemplarily shown as using the rotation of the fan blade driven by electricity to transport air, the fan portion 51 can also be other air delivery devices such as a bladeless fan, as long as it can be driven by electricity to transport air. The air guiding portion 55 is configured to guide the air discharged from the fan portion 51 into the accommodation space 11. The air guiding portion 55 includes an air guiding housing 551, at least a portion of which is located in the receiving cavity 401.The air guide shell 551 forms an air guide passage 5510, which includes an air inlet 5501 and an air outlet 5502. The air inlet 5501 of the air guide passage 5510 is connected to the air outlet 5192 of the fan shell 519, and the air outlet 5502 of the air guide passage 5510 is in communication with the accommodation space 11. The air discharged from the air outlet 5192 enters the air guide passage 5510 through the air inlet 5501, is discharged into the accommodation space 11 through the air outlet 5502 of the air guide passage 5510, and enters the interior of the accommodation space 11, for example, through the mesh of the canopy fabric of the canopy assembly 300, thereby adjusting the temperature inside the accommodation space 11. In some embodiments, a sealing ring 593 (see FIG. 26) is arranged at the connection between the air guide shell 551 and the fan shell 519, which can prevent the air discharged into the air inlet 5501 from leaking between the air guide shell 551 and the fan shell 519. The flow direction of the air is schematically shown by arrows F in FIGS. 16 and 17. Referring to FIGS. 14, 17-25, the air guide shell 551 defines a bent air guide passage 5510. The air outlet 5502 of the air guide passage 5510 blows air from the peripheral wall 102 of the box body 10 into the accommodation space 11. In some embodiments, the inner side wall 10212 of the peripheral wall 102 of the box body 10 is provided with an opening portion 1024, for example, but not limited to, between the two second supports 22. The opening portion 1024 is opposite to the air outlet 5502 to allow the air discharged from the air outlet 5502 to enter the interior of the accommodation space 11. In some embodiments, the air outlet 5502 does not protrude into the accommodation space 11 relative to the opening portion 1024. In some embodiments, the seat cloth 13 can cover the opening portion 1024, and the seat cloth 13 is at least a breathable fabric in the area covering the opening portion 1024 to allow the air discharged from the air outlet 5502 to pass through and enter the accommodation space 11. In the example shown in FIG. 34, the inner side wall cloth 1321 and the inner bottom wall cloth 1322 of the seat cloth 13 inside the accommodation space 11 are both breathable fabrics. In this way, the air from the opening portion 1024 at any position of the inner wall of the box body 10 can pass through the seat cloth 13 and enter the accommodation space 11. In some embodiments, referring to FIG. 35, a breathable opening 130L can be formed in the area of the seat cloth 13 corresponding to the opening portion 1024. The area of the seat cloth 13 other than the breathable opening 1301 can be ordinary cloth. The breathable opening 1301 can have a shape corresponding to the opening portion 1024, for example, a shape identical to and aligned with the opening portion 1024, or a shape slightly larger than and covering the opening portion 1024.The air permeable hole 1301 can be covered by air permeable cloth. In other embodiments, the air permeable hole 1301 can also be open without being covered, to directly expose the opening portion 1024 opposite to the air permeable hole 1301 to the accommodation space 110. In the example shown in the figure, the opening portion 1024 has a vertical long strip shape extending along the height direction D3, and correspondingly, the air permeable hole 1301 on the seat cloth 13 also has a vertical long strip shape. In addition, the air outlet 5502 can be provided with a protective screen to prevent foreign matter from entering the air guide channel 5510 inside through the air outlet 5502. In some embodiments, the protective screen can adopt a filter screen, so that the air entering the accommodation space 11 inside can be filtered. Referring to FIG. 33, the seat cloth 13 at the bottom can be provided with a through hole 1302 to allow the air guide channel 5510 to pass through the through hole 1302 and be assembled to the box body 10o However, in embodiments without the air guide channel 5510, the seat cloth 13 at the bottom can not have the through hole 1302o Referring to FIGS. 20 and 28, the box body 10 at the bottom can be provided with an upwardly recessed fan assembly receiving groove 104, and in the case of assembling the base 40 and the fan assembly 500 to the box body 10, the fan assembly 500 can be at least partially embedded in the fan assembly receiving groove 104. In this way, the occupied space of the base 40 can be compressed, making the carrier 1000 more portable. Referring to FIGS. 24-27, the fan housing 519 can be fixed to the base body 43 by fasteners 591. The air guide housing 551 can be fixed to the base body 43 by fasteners 592. The fasteners 591 and the fasteners 592 can be screws or bolts, for example. Referring to FIGS. 26 and 27, in some embodiments, the air guide housing 551 can include at least two housing parts, each of which can be respectively made by injection molding, and then assembled into the air guide housing 551 to form a complete air guide channel 5510. In this embodiment, the air guide housing 551 includes a first housing part 5511 and a second housing part 5512o The air inlet 5501 and the air outlet 5502 are formed on the first housing part 5511. The first housing part 5511 is also formed with a bottom opening 55110, and the second housing part 5512 covers the bottom opening 55110o In this embodiment, the fasteners 592 fix the first housing part 5511 and the second housing part 5512 together to the base body 43, so that the second housing part 5512 is clamped between the first housing part 5511 and the base body 43. In some embodiments, a sealing gasket can be clamped between the first housing part 5511 and the second housing part 5512.The air guide shell 551 is assembled by multiple shell parts, each shell part is easy to be molded, and the production and processing of the air guide shell 551 is facilitated. In some embodiments, the inner wall of the base body 43 can be provided with a filter screen at the position corresponding to each air vent 432 to filter sand and dust. Of course, in some embodiments, the filter screen 51911 can also be arranged at the air suction port 5191 and / or the air exhaust port 5192 of the fan shell 519, and in some embodiments, the filter screen can be arranged at any suitable position. The filter screen can be a filter screen sheet or filter cotton, and can have a single-layer filter structure or a multi-layer filter structure to ensure that the air discharged into the accommodation space 11 through the air outlet 5502 is clean and hygienic. When the battery part is configured, the battery part can be installed at any suitable position. For example, the battery part can be installed on the fan shell 519 or the base body 43. Referring to FIGS. 24 and 25, the control part 52 is located outside the fan shell 519, and more specifically, the control part 52 is fixed to the base body 43. In some embodiments, the inside of the base body 43 is provided with a clamping part 435, and the control part 52 is clamped with the clamping part 435. In some embodiments, the clamping part 435 includes two oppositely arranged L-shaped plates 4351, each L-shaped plate 4351 extends from the inner wall of the base body 43, and the two L-shaped plates 4351 form a clamping groove for clamping the control part 52. In some embodiments, a reinforcing rib plate 4352 is arranged between each L-shaped plate 4351 and the base body 43. Referring to FIGS. 29 and 30, in some embodiments, the control part 52 includes a fixed outer cover 527, a fixed inner cover 526, and a PCB circuit board 52E. When the control part 52 is clamped with the clamping part 435, the fixed outer cover 527 abuts against the inner wall of the base body 43. The fixed outer cover 527 can be provided with a control button 522. The control button 522 can include a switch button and can also include a wind speed button. In this embodiment, the fixed outer cover 527 is provided with a mounting hole 5270, a sleeve 5274 is sleeved in the mounting hole 5270, and the control button 522 is sleeved in the sleeve 5274. In this embodiment, the control button 522 is a mechanical button, and a through hole 4313 is arranged on the base body 43, and the control button 522 is exposed through the through hole 4313. When the control button 522 is pressed by external pressing force, the control button 522 can be pressed down by sliding along the sleeve 5274. The control part 52 can also include a return spring 529, which can push the control button 522 to reset when the external pressing force is released.In addition, an axial limiting structure (not shown in the figure) preventing the control button 522 from falling off the sleeve 5274 can be arranged between the control button 522 and the sleeve 5274, which can be in the form of a hole shoulder and a shaft shoulder or other suitable structure matched with each other.

[0008] The PCB 521 can be positioned on the fixed inner cover 526 and clamped between the fixed inner cover 526 and the fixed outer cover 527. The PCB 521 is provided with a touch switch 5212. In some embodiments, when the control button 522 is a switch button and the control button 522 is pressed, the touch switch 5212 is triggered to act, that is, the battery part 53 can start to supply power to the motor of the fan part 51 or stop supplying power to the motor of the fan part 51. In some embodiments, the reset spring 529 can be located in the sleeve 5274 and clamped between the control button 522 and the PCB 521. The fixed inner cover 526 can be formed with a clamping groove 5265 for accommodating the PCB 521. In some embodiments, the fixed outer cover 527 and the fixed inner cover 526 can be provided with a clamping structure 528 to allow the fixed outer cover 527 and the fixed inner cover 526 to be reliably engaged together, so as to stably clamp the PCB 521 therebetween. The clamping structure 528, for example, includes a clamping arm 5281 extending from one of the fixed outer cover 527 and the fixed inner cover 526, and a clamping recess 5282 located in the other one of the fixed outer cover 527 and the fixed inner cover 526, and the clamping arm 5281 and the clamping recess 5282 are clamped. In some embodiments, to ensure that the control part 52 is stably fixed to the base body 43, the wall of the clamping groove 5265 can be fixed to the positioning point 4303 inside the base body 43 by the fourth fastener 5266. The control part 52 can further include a charging connector 523 electrically connected to the PCB 521, and an external power supply supplies power to the motor through the charging connector 523, the PCB 521 and the wire harness 5112 (see FIG. 26) of the motor of the fan part 51. The fixed inner cover 526 can have a through hole 5263, and the wire harness 5112 can pass through the through hole 5263 to be electrically connected to the PCB 521. In the present embodiment, the charging connector 523 is arranged at a suitable position on the PCB 521. The fixed outer cover 527 is provided with a through hole 5271, and the base body 43 is provided with a through hole 4315, and the charging connector 523 passes through the through hole 5271 and the through hole 4315. In some alternative embodiments, the carrier 1000 can be provided with a battery part, and an external power supply can charge the battery part through the charging connector 523, and the battery part supplies power to the motor of the fan part 51.In the examples shown in FIGS. 14-33 and 35, the air guide portion 55 of the fan assembly 500 has only one air outlet 5502, the inner side wall 10212+ of the cabinet body 10 is provided with only one opening portion 1024 corresponding to the air outlet 5502, and the area on the seat cloth 13 corresponding to the opening portion 1024 is provided with only one air vent 1301. The opening portion 1024 and the air vent 1301 are both vertically long strips. However, in some embodiments, the position, shape, size, and number of the air vents 1301 on the seat cloth 13 can be variously deformed, and the position, shape, size, and number of the opening portion 1024 and the air outlet 5502 can be correspondingly deformed. In some embodiments, referring to FIG. 34, the inner side wall cloth 1321 and the inner bottom wall cloth 1322 of the seat cloth 13 located in the accommodation space 11 are both air-permeable cloth. In this way, air from any number of air vents 1023 on the inner wall of the cabinet body 10 can directly pass through the seat cloth 13 into the accommodation space 11 to achieve natural air intake and air permeation, achieving the effect of heat dissipation and ventilation. In some embodiments, referring to FIGS. 36-38, the inner side wall cloth 1321 of the seat cloth 13 can be provided with a plurality of air vents 1301 at intervals. The plurality of air vents 1301 can be provided on one or more sides of the inner side wall cloth 1321 of the seat cloth 13, and one or more air vents 1301 can be provided on each side. In some embodiments, referring to FIG. 36, the plurality of air vents 1301 can be distributed at intervals along the corresponding longitudinal direction D1 or horizontal direction D2, or referring to FIG. 37, can be distributed at intervals along the height direction D3, or referring to FIG. 39, can be distributed at intervals along the longitudinal direction D1 or horizontal direction D2 in one part and along the height direction D3 in another part. In some embodiments, referring to FIG. 36, the plurality of air vents 1301 can have a vertically long strip shape extending in the height direction, or referring to FIG. 37, the plurality of air vents 1301 can have a horizontally long strip shape extending in the longitudinal direction D1 or horizontal direction D2, or referring to FIG. 38, the plurality of air vents 1301 can have a vertically long strip shape extending in the height direction in one part and a horizontally long strip shape extending in the longitudinal direction D1 or horizontal direction D2 in another part. The shape of the air vent 1301 can also be, for example, circular, oval, square, hexagonal, irregular, or any other suitable shape.In some embodiments, a plurality of opening portions 1024o corresponding to the plurality of air vents 1301 can be provided on the inner side wall of the box body 10. Each air vent 1301 can have a shape corresponding to each opening portion 1024, for example, a shape identical to and aligned with the opening portion 1024, or a shape slightly larger than and covering the opening portion 1024. The air guide channel 5510 can include at least one air inlet 5501 connected to the air outlet 5192 of the fan housing 519, and a plurality of air outlets 5502 respectively communicating with the accommodation space 11 and respectively corresponding to the plurality of opening portions 1024, to allow air discharged from each air outlet 5502 to enter the interior of the accommodation space 11 through the corresponding opening portion 1024 and air vent 1301. In some embodiments, instead of or in addition to the air vents 1301, a plurality of air vent matrices 1303 can be distributed on one or more sides of the inner side wall cloth 1321 of the seat cloth 13, and the air vent matrix 1303 includes a plurality of air vent holes 1303L arranged in a matrix. The plurality of air vent holes 1303L can be uniformly distributed in a predetermined area on the inner side wall of the peripheral wall, for example, in the entire inner side wall of any side of the peripheral wall. Each air vent hole 1303L can be circular, rectangular, or other shapes. In the present embodiment, by distributing the air vent matrix 1303 on the inner side wall cloth 1321 of the seat cloth 13, air can be more uniformly delivered into the accommodation space 11, improving user comfort. In the example shown in FIG. 39, the air vent matrix 1303 includes a square matrix of 3 rows x 7 columns of air vent holes 1303L. In other examples, the number of air vent holes 1303L in the air vent matrix 1303 can be adjusted as needed. In other examples, the arrangement pattern of the air vent matrix 1303 can be a triangular matrix, a rectangular matrix, a hexagonal matrix, a matrix forming a specific pattern, or any other arbitrary matrix. In some embodiments, accordingly, instead of or in addition to the opening portions 1024, a plurality of opening holes (not shown) corresponding to the plurality of air vent holes 1303L in the air vent matrix 1303 can be provided on the inner side wall of the box body 10. Each air vent hole 1303L can have a shape corresponding to the opening hole, for example, a shape identical to and aligned with the opening hole, or a shape slightly larger than and covering the opening hole.The air guide passage 5510 can include at least one air inlet 5501 connected to the air outlet 5192 of the fan housing 519, and a plurality of air outlets 5502 respectively communicating with the accommodation space 11 and opposite to the plurality of opening holes to allow the air discharged from each air outlet 5502 to enter the inside of the accommodation space 11 through the corresponding opening hole. In some embodiments, the shape, position, and number of the opening portion 1024 can also not correspond to the air permeable port 1301 / vent hole 13031. For example, one or more opening portions 1024 can be provided, which are less than the number of air permeable ports 1301 / vent holes 13031, and which can cover all of the air permeable ports 1301 or the vent hole matrix 1303, or which can only partially cover or not cover the air permeable ports 1301 or the vent hole matrix 1303 at all, and air is transported from the opening portion 1024 to each air permeable port 1301 or each vent hole 13031 by the interlayer between the inner seat cloth 132 and the inner wall of the box body 10. Each opening portion 1024 can have a strip shape, a rectangular shape, a circular shape, or other shapes. In some embodiments, the shape, position, and number of the air outlet 5502 can also not correspond to the opening portion 1024. For example, one or more air outlets 5502 can be provided, which are less than the number of opening portions 1024 or opening holes, and which are opposite to part or all of the opening portions 1024 or opening holes. Some existing pet boxes usually have a larger size in order to improve the scope of application and the comfort of pets riding, for example, the length size (longitudinal size) of the pet box is large to accommodate larger pets; and in order to ensure lightweight, the box body of the pet box is usually composed of foamed body and support structure. When the pet box is placed on a transport carrier, due to its large longitudinal size, the strength of the existing structure is not enough, and if an external impact is encountered, the pet in the pet box may not be effectively protected. Therefore, how to improve the safety of the pet box is a technical problem that needs to be solved by those skilled in the art. The following embodiments of the present application provide a carrier 1000 to at least partially solve the above technical problem. The carrier 1000 can be used to carry living beings such as pets, and it can be, but is not limited to, a pet box or a pet basket. According to different use scenarios, the carrier 1000 can also be appropriately used to carry articles such as vegetables and fruits. It can be understood that the structure of the box assembly 100 and the ceiling assembly 300 of each of the following embodiments can refer to the description in the above embodiments without conflict. FIGS. 40 and 42 show a carrier 1000 provided according to some embodiments of the present application, including a box assembly 100 and a support assembly 20.The box assembly 100 can define a housing space 11 for housing a living body such as a pet. The housing space 11 has a top opening 110 for the living body to enter or exit the housing space 11. The box assembly 100 includes a box body 10 having a bottom 101 and a peripheral wall 102 extending upward from the periphery of the bottom 101. The bottom 101 and the peripheral wall 102 together define the housing space 11 for the pet to sit on and the top opening 110. The box body 10 can be made of a foamed material such as foamed polypropylene (EPP), foamed polystyrene (EPS), foamed polyethylene (EPE), foamed ethylene (EPO), or the like. Of course, the material of the box body 10 is not limited to the above examples. In the present embodiment, the box body 10 can be substantially rectangular (e.g., a rounded rectangular) when viewed from the top of the box body 10, having a longitudinal direction D1, a lateral direction D2, and a height direction D3, and the length of the box body 10 in the longitudinal direction D1 is greater than the length of the box body 10 in the lateral direction D2. The peripheral wall 102 of the box body 10 includes a pair of opposite peripheral wall long sides 1021 extending along the longitudinal direction D1 and a pair of peripheral wall short sides 1022 extending along the lateral direction D2. Of course, in some alternative embodiments, the box body 10 can be configured in other shapes other than rectangular, such as but not limited to various equilateral shapes or other shapes. The box assembly 100 further includes a connection device 41 disposed at the lower portion of the box body 10. The box assembly 100 has a center plane CA1 constituted by the lateral direction D2 and the height direction D3 (i.e., the center plane CA1 is perpendicular to the longitudinal direction D1) (the center line of the box assembly 100 in the height direction D3 is located in the center plane CA1). The connection device 41 can be distributed in the direction parallel to the long side, and the center line CA2 of the connection device 41 extending in the height direction D3 of the box assembly 100 is located on one side of the center plane CA1, i.e., the center line CA2 is biased toward the longitudinal side relative to the center plane CA1. Specifically, the center plane CA1 divides the box assembly 100 into a first portion 10a and a second portion 10b arranged along the longitudinal direction D1, wherein the side where the center line CA2 is located is the first portion 10a, and the other side is the second portion 10b. The carrier 1000 is connected to the connection fitting on the vehicle seat through the connection device 41. The center line CA2 of the connection device 41 is disposed on one side of the center plane CA1 of the box assembly 100. When the distance between the connection fitting and the door is small, interference between the carrier 1000 and other components around the door or the door can be avoided.As shown in FIG. 40, the center line CA2 is located in the first part 10a, the connecting device 41 is mainly distributed in the first part 10a, and the longitudinal range of the connecting device 41 has more overlap with the longitudinal range of the first part 10a. Therefore, when the carrier 1000 is fixed to the vehicle seat through the connecting device 41, the connecting device 41 can better fix the first part 10a to the vehicle seat, the first part 10a is more protected by the vehicle seat, and the second part 10b is more easily shaken relative to the first part 10a. In this embodiment, part of the connecting device 41 extends to the second part 10b, and the second part 10b is fixed to the vehicle seat through the connecting device 41 only in a small area in the longitudinal range, and is indirectly connected to the vehicle seat through the connecting device 41 in most areas, and most areas of the second part 10b are more easily shaken relative to the first part 10b. Of course, in other embodiments, the connecting device 41 can also be located entirely in the first part 10b. The bracket assembly 20 is connected to the box body 10, and the bracket assembly 20 can improve the strength of the box body 10, and the bracket assembly 20 can be, for example, a frame structure made of metal. The bracket assembly 20 includes at least two reinforcing frames (also referred to as second brackets) A22, the at least two reinforcing frames A22 are combined with the box body 10, and at least part of the at least two reinforcing frames A22 are arranged along the longitudinal direction of the carrier 1000. For example, the reinforcing frame A22 can be arranged in a plane formed by the transverse direction D2 and the height direction D3. As shown in FIG. 43, the reinforcing frame A22 can be connected to the outer surface of the box body 10. Specifically, in this embodiment, the reinforcing frame A22 can have a U shape, including a bottom edge and two side edges, the bottom edge of the reinforcing frame A22 can be connected to the bottom 101 of the box body 10, and the side edges of the reinforcing frame A22 can be connected to the circumferential wall long edge 1021. The reinforcing frame A22 can improve the ability of the carrier 1000 to withstand forces from the transverse direction D2 and the height direction D3. In the example shown in FIGS. 40-42, the bottom edge of the reinforcing frame A22 extends along the transverse direction D2, and the side edge of the reinforcing frame A22 extends along the height direction D3. In other embodiments, the bottom edge of the reinforcing frame A22 can have a first included angle with the transverse direction D2, and the side edge of the reinforcing frame A22 can have a second included angle with the height direction D3, which is not limited herein. The center line CA2 of the connecting device 41 is located in the first part 10a of the box assembly 100, the bracket assembly 20 is provided with at least two reinforcing frames A22 on the side where the second part 10b is located, and the two reinforcing frames A22 can be distributed along the longitudinal direction D1 to improve the ability of the carrier 1000 to resist extrusion and impact at multiple positions in the longitudinal direction D1.It should be noted that the side where the center line CA2 of the connecting device 41 is located can also be provided with the reinforcing frame A22, which is not limited herein. In the embodiment, the connecting device 41 is mainly located in the first part 10a of the box assembly 100, and the bracket assembly 20 is provided with at least two reinforcing frames A22 on the side away from the center line CA2 of the center surface CA1, that is, the bracket assembly 20 is provided with at least two reinforcing frames A22 on the side where the second part 10b of the box assembly 100 is located. When the connecting device 41 is connected with the connecting fitting on the vehicle seat, the side corresponding to the second part 10b of the box body 10 is protected by the at least two reinforcing frames A22, and the strength is improved, so that the risk of deformation or damage of the carrier 1000 when subjected to extrusion or impact is reduced, and the safety of the carrier 1000 is improved. Referring to FIGS. 40-42, in an embodiment, the bracket assembly 20 is provided with reinforcing frames A22 on both sides of the center surface CA1, and the reinforcing frames A22 located on both sides of the center surface CA1 are asymmetrically distributed. In some embodiments, the number of reinforcing frames A22 located on the side where the center line CA2 is located is less than the number of reinforcing frames A22 located on the side away from the center line CA2 of the center surface CA1, that is, the number of reinforcing frames A22 located on the side where the first part 10a is located is less than the number of reinforcing frames A22 located on the side where the second part 10b is located. When the carrier 1000 is connected with the vehicle seat, although the vehicle seat can provide certain protection to the carrier 1000, the carrier 1000 still faces the risk of deformation due to extrusion or impact. The carrier 1000 on the side away from the center line CA2 of the center surface CA1 (i.e., the side where the second part 10b of the carrier 1000 is located) is relatively far away from the center line CA2 of the connecting device 41, and is more likely to sway or deform due to impact. In the embodiment, the number of reinforcing frames A22 corresponding to the second part 10b on the bracket assembly 20 is relatively large, which can improve the structural strength of the carrier 1000 on that side, improve the extrusion or impact resistance of the carrier 1000 on that side, and thereby reduce the risk of deformation or damage of the second part 10b and improve the safety performance of the carrier 1000. In some embodiments, the number of reinforcing frames A22 located on the side close to the center line CA2 of the center surface CA1 (i.e., corresponding to the side where the first part 10a is located) can be greater than or equal to one, and the reinforcing frames A22 on that side can improve the structural strength of the carrier 1000 on that side, thereby improving the extrusion or impact resistance of the carrier 1000 and further improving the safety of the carrier 1000.In some embodiments, when the first part 10a has reached the required structural strength through other structures, the support assembly can also not be provided with a reinforcing frame A22 on the side corresponding to the side where the first part 10a is located. Referring to FIGS. 40-43, in an embodiment, the reinforcing frame A22 includes a first reinforcing frame 221, a second reinforcing frame 222, and a third reinforcing frame 223. The first reinforcing frame 221 and the second reinforcing frame 222 are respectively located on both sides of the center plane CA1, and the first reinforcing frame 221 is located on the side of the center plane CA1 close to the center line CA2 (i.e., the side corresponding to the side where the first part 10b is located). The second reinforcing frame 222 and the third reinforcing frame 223 are located on the side of the center plane CA1 away from the center line CA2 (i.e., the side corresponding to the side where the second part 10b is located). In the specific embodiment shown in FIG. 40, the number of the first reinforcing frame 221 and the second reinforcing frame 222 is one, and the first reinforcing frame 221 and the second reinforcing frame 222 are symmetrically distributed on both sides of the center plane CA1. Since the first reinforcing frame 221 and the second reinforcing frame 222 are symmetrically located, they approximately equally improve the structural strength of both sides of the carrier 1000, thereby reducing the risk of deformation or damage of the carrier 1000 as a whole and improving the safety of the carrier 1000. Of course, in other embodiments, the first reinforcing frame 221 and the second reinforcing frame 222 can also be distributed in an asymmetric manner, the number of the first reinforcing frame 221 and the second reinforcing frame 222 can be more than two, and the number of the first reinforcing frame 221 and the second reinforcing frame 222 can also be different, which is not limited herein. The third reinforcing frame 223 is located on the side of the support assembly 20 corresponding to the second part 10b, which can strengthen the structural strength of the carrier 1000 on that side. In this embodiment, the first reinforcing frame 221 and the second reinforcing frame 222 strengthen the structural strength of the carrier 1000 as a whole, thereby ensuring the structural strength of the carrier 1000 and reducing the risk of deformation or damage of the carrier 1000. The third reinforcing frame 223 can further strengthen the structural strength of the carrier 1000 on the side of the center plane CA1 away from the connecting device 41. Referring to FIG. 43, in an embodiment, the reinforcing frame A22 is located outside the box body 10 and connected with the outer wall of the box body 10. When the box body 10 deforms, an acting force will be generated between the box body 10 and the reinforcing frame A22, thereby directly transmitting the load causing the deformation to the reinforcing frame A22. The reinforcing frame A22 can generate a counteracting force after bearing the load, which can reduce the deformation of the box body 10. Referring to FIGS. 44 and 45, optionally, the reinforcing frame A22 is connected with the box body 10 through the locking cover 14.Exemplarily, the bottom 101 of the box body 10 is provided with a locking groove 105, the bottom of the locking groove 105 is provided with a through hole 106, the reinforcing frame A22 is provided with a connecting hole 23 corresponding to the position of the through hole 106, when the box body 10 is connected with the reinforcing frame A22, the reinforcing frame A22 is connected with the box body 10 from the outside, the locking cover 14 is installed in the locking groove 105, and the fastener is connected through the locking cover 14, the through hole 106 of the box body 10 and the connecting hole 23 of the reinforcing frame A22. Of course, the box body 10 and the reinforcing frame A22 can also be connected by welding, bonding or clamping, etc., which is not limited here. Referring to FIGS. 45 and 46, optionally, the outer surface of the box body 10 can be provided with a fixing groove 103, and the reinforcing frame A22 can be embedded in the fixing groove 103. The fixing groove 103 can position the reinforcing frame A22, so as to avoid relative movement between the reinforcing frame A22 and the box body 10. More specifically, after the reinforcing frame A22 is embedded in the fixing groove 103, the outer surface of the reinforcing frame A22 does not protrude from the outer surface of the box body 10. Referring to FIGS. 43 and 47, in an embodiment, the support assembly 20 further comprises a circumferential support, the circumferential support is arranged around the box body 10, and the reinforcing frame A22 is connected with the circumferential support. More specifically, in this embodiment, both ends of the reinforcing frame A22 are connected with the circumferential support. As shown in FIG. 47, the circumferential support is located in the plane formed by the longitudinal direction D1 and the transverse direction D2, and is perpendicular to the height direction of the box body 10. The circumferential support is close to the upper part of the box body 10 and is arranged around the box body 10. The circumferential support will bear the force in the longitudinal direction D1 and the transverse direction D2 when the carrier 1000 is subjected to extrusion or impact. When the box body 10 is subjected to extrusion or impact, the position of the top opening 110 has relatively low strength and is more prone to deformation. The circumferential support is arranged close to the top opening 110 of the box body 10, which can reduce the deformation at the top opening 110 and thus improve the extrusion or impact resistance of the carrier 1000. The reinforcing frame A22 can be U-shaped, and both ends thereof are connected with the circumferential support. As shown in FIG. 44, the reinforcing frame A22 and the circumferential support form an integrated structure after being connected. When the carrier 1000 is subjected to extrusion or impact, the support assembly 20 can balance the stress, and at the same time, the support assembly 20 can elastically deform, so that the stress is transmitted between the circumferential support and the reinforcing frame A22, the stress is dispersed, the extrusion or impact resistance of the support assembly 20 is improved, and thus the safety of the carrier 1000 is improved. Optionally, the circumferential support can comprise two first supports 21 and two connecting bases 211.As shown in FIGS. 44 and 45, the first support 21 can be in a U shape, and the two ends of the two first supports 21 are connected by two connecting bases 211 respectively, forming a ring structure to surround the box body 10. The split structure of the circumferential support can facilitate assembly and reduce the requirement for the dimensional accuracy of the circumferential support processing. For example, as shown in FIGS. 47 and 48, the two first supports 21 can be located on the two sides of the central plane CA1 respectively, and the two connecting bases 211 can be located on the central plane CA1. Of course, the distribution of the first support 21 and the connecting base 211 is not limited to this. Optionally, the first support 21 and the reinforcing frame A22 can be formed by pipe processing, and the pipe has high structural strength, which can further improve the structural strength of the support assembly 20. Of course, the first support 21 and the reinforcing frame A22 can also be made of other profiles, which are not limited herein. Optionally, due to the split structure of the circumferential support, the corresponding reinforcing frame A22 can be connected with the first support 21 to form an integrated frame structure before assembly. Then, the frame structure is installed on the outer periphery of the box body 10, and the two ends of the first support 21 are connected by the connecting base 211, so that the support assembly 20 is connected to the outer wall of the box body 10. In the example shown in FIG. 48, one first support 21 connects the second reinforcing frame 222 and the third reinforcing frame 223 to form one frame structure. In the example shown in FIG. 49, the other first support 21 connects the first reinforcing frame 221 to form another frame structure. During assembly, the support assembly 20 is divided into two frame structures and two connecting bases 211, which greatly reduces the number of components of the support assembly 20 during assembly, thereby reducing the assembly difficulty and improving the assembly efficiency. Referring to FIGS. 50 and 51, in an embodiment, the box assembly 100 further comprises a base 40 located below the box body 10, and the connecting device 41 is arranged on the base 40. The base 40 comprises a base body 43 and a connecting device 41, and the base body 43 is located below the box body 10 and connected with the bottom 101 of the box body 10. The base body 43 can cover the entire bottom 101 of the box body 10. After the base body 43 is connected with the bottom 101 of the box body 10, the bottom of the box assembly 100 forms at least a double-layer structure. The double-layer structure has higher carrying capacity when bearing the longitudinal D1 and transverse D2 forces, which can further improve the extrusion or impact resistance of the carrier 1000, thereby improving the safety of the carrier 1000. Of course, in the embodiment without the base 40, the connecting device 41 can be directly connected with the box body 10.Optionally, the bottom edges of the reinforcing frames A22 are located between the box body 10 and the base body 43, and the base body 43 is in contact with the reinforcing frames A22. When the carrier 1000 is subjected to extrusion or impact, the base body 43 can transmit stress to each reinforcing frame A22, so that each reinforcing frame A22 shares the stress, reduces the load of a single reinforcing frame A22, and thus improves the extrusion or impact resistance of the carrier 1000. Referring to FIGS. 50 and 51, in an embodiment, the connecting device 41 includes one or more connectors 411 adapted to be inserted into the connecting fittings of the vehicle seat. The connecting fittings of the vehicle may, for example, be located at the lower part of the backrest of the vehicle seat near the cushion, and the number of connecting fittings of the vehicle seat can be one or more. For example, the connecting fittings of the vehicle can include two insertion ports (such as ISOFIX insertion ports, LATCH insertion ports, or safety belt insertion ports, etc.), which are horizontally centered on the lower part of the backrest of the vehicle seat. When the connecting device 41 is correspondingly connected to the connecting fittings, the carrier 1000 is fixed on the vehicle seat. Optionally, the connector 411 includes an insertion part and a connecting part, the insertion part is used to be inserted and fixed with the insertion port of the vehicle, and the insertion part is connected with the connecting part. The insertion part can be inserted into the insertion port and can be accommodated in the insertion port. In the example shown in FIGS. 50 and 51, the connector 411 is connected with the base body 43. Optionally, the connecting part includes a pivoting mechanism, the insertion part is pivoted with the base body 43 via the pivoting mechanism, and is configured to connect the insertion part to one side of the base body 43. When the connecting device 41 is connected to the connecting fittings of the vehicle seat, the connecting part can not be accommodated in the insertion port, but is placed outside the insertion port. In other examples, the insertion part can be connected to the base body 43 via different connection modes, and accordingly the connecting part can include different configurations of the connecting part to connect the base body 43 with the insertion part. Optionally, as shown in FIGS. 50 and 51, the base body 43 is provided with a folding groove 430L corresponding to each connector 411, and the connector 411 is correspondingly installed in the corresponding folding groove 430L and is rotatably connected with the base body 43 through the pivoting mechanism. Each connector 411 has a folded state of being accommodated in the folding groove 430L of the base body 43, and an unfolded state of protruding from the folding groove 430L of the base body 43 and protruding from the side wall of the base body 43. When the carrier 1000 does not need to be fixed on the vehicle seat, the connector 411 can be in the folded state. When the carrier 1000 needs to be fixed on the vehicle seat, the connector 411 can be in the unfolded state. In some embodiments, the user can manually rotate the connector 411 to the unfolded state or the folded state.In some embodiments, one side of the base body 43 can be provided with a connector operating member 412 connected to the connector 411 via a mechanical structure arranged at the bottom of the base body 43. The connector operating member 412 can drive the connector 411 to switch from the collapsed state to the expanded state via the mechanical structure during movement from the initial position to the driving position, and can drive the connector 411 to switch from the expanded state to the collapsed state via the mechanical structure during movement from the driving position to the initial position. The user can switch the connector 411 between the collapsed state and the expanded state through the connector operating member 412. Optionally, when the number of connectors 411 is one, the center line CA2 of the connecting device 41 can pass through the center of the connection position of the connector 411 and the base body 43 when the connector 411 is in the expanded state. When the number of connectors 411 is more than two, the connection positions of the connectors 411 and the base 40 can form a geometric figure, and the center line CA2 of the connecting device 41 can pass through the geometric center of the geometric figure. Referring to FIGS. 40 and 50, in an embodiment, the third reinforcing frame 223 is biased to one side of the connector 411 by a preset interval d4 along the longitudinal direction D1. Since the connector 411 is fixedly connected with the connecting fitting of the vehicle seat, when the carrier 1000 is subjected to extrusion or impact, the box body 10 tends to move relatively to the vehicle seat. At this time, the connector 411 and the connecting fitting are the main components that bear the load, and other parts of the box body 10 mainly bear the torque around the connector 411. Referring to FIG. 50, the circumferential support extends along the longitudinal direction D1, and the reinforcing frame A22 extends along the height direction D3, so that the support assembly 20 cooperates with the box body 10 to have a good bending moment of resistance, which can effectively resist the bending moment generated when one end of the carrier 1000 is subjected to pressure, thereby reducing the deformation of the carrier 1000. When the carrier 1000 is subjected to extrusion or impact, the preset interval d4 between the third reinforcing frame 223 and the connector 411 is the resistance arm in the deformation process, and the value of the resistance arm is not zero, which can increase the stress required to cause the deformation of the carrier 1000 and improve the anti-deformation ability of the carrier 1000. Optionally, referring to the example shown in FIGS. 50 and 51, the number of connectors 411 is two, including a first connector 411a and a second connector 411b. The first connector 411a is closer to the end of the first part 10a of the box assembly 100 and farther away from the end of the second part 10b than the second connector 411b. The second connector 411b is closer to the end of the second part 10b of the box assembly 100 and farther away from the end of the first part 10a than the first connector 411a.In the embodiment, the center plane CA1 is located between the two connectors 411, the second connector 411b is located on the second part 10b of the box assembly 100, and the first connector 411a is located on the first part 10a of the box assembly 100. The third reinforcing frame 223 is located outside the two connectors 411. The second connector 411b is close to the third reinforcing frame 223, and the distance between the center line CA21 at the root of the second connector 411b and the center line CA22 of the third reinforcing frame 223 along the longitudinal direction D1 is a preset distance d4. The center of gravity of the box body 10 is generally located on the center plane CA1. When the carrier 1000 is fixed to the vehicle seat, the two connectors 411 are connected to the two connecting fittings of the vehicle seat respectively, and the center of gravity of the box body 10 is located between the two connecting fittings. During the driving of the vehicle, the box body 10 moves with the vehicle seat, and the connection mode of the embodiment can reduce the jolt and shake of the box body 10. Of course, the user can set the two connectors 411 on the same side of the center plane CA1 (for example, set the two connectors 411 on the side of the carrier 1000 corresponding to the first part 10a of the box assembly 100), which is not limited herein. Referring to FIG. 50, in an embodiment, the third reinforcing frame 223 is located between the center plane CA1 and the second reinforcing frame 222. When the carrier 1000 is subjected to extrusion or impact, the box body 10 not only rotates around the connector 411, but also locally stretches and compresses at the position close to the connector 411 under the action of stress. The position with the maximum stress on the box assembly 100 is generally located close to the connector 411, that is, the position with the maximum stretching and compression deformation of the box assembly 100 is close to the connector 411. The third reinforcing frame 223 is located between the center plane CA1 and the second reinforcing frame 222, so that the distance between the third reinforcing frame 223 and the connecting device 41 is smaller. The third reinforcing frame 223 shares the stress borne by the box assembly 100, reduces the stress concentration on the box assembly 100, thereby reducing the deformation of the box assembly 100, reducing the risk of damage to the box assembly 100, and improving the safety of the carrier 1000. For example, as shown in FIG. 50, the number of first reinforcing frames 221 and the number of second reinforcing frames 222 are both one, and are symmetrically distributed on both sides of the center plane CA1. The first reinforcing frame 221 and the second reinforcing frame 222 can respectively strengthen the structural strength of the two sides of the carrier 1000, and improve the overall structural strength of the carrier 1000. In other embodiments, the first reinforcing frame 221 and the second reinforcing frame 222 can be other numbers, for example, two, three, etc., which are not limited herein.Referring to FIG. 50, the distance between the third reinforcing frame 223 and the center surface CA1 is smaller than the distance between the third reinforcing frame 223 and the second reinforcing frame 222 in the longitudinal direction D1. In an embodiment, the number of the third reinforcing frame 223 is one. The distance between the third reinforcing frame 223 and the second reinforcing frame 222 is greater than the distance between the third reinforcing frame 223 and the connecting device 41 in the longitudinal direction D1. When the part of the box body 10 close to the connector 411 is about to be stretched or compressed, the third reinforcing frame 223 will also bear a certain stress as the box body 10 deforms. In the present embodiment, the distance between the third reinforcing frame 223 and the connecting device 41 is smaller, so it is closer to the stress concentration area. When the part of the box body 10 close to the connector 411 is about to be stretched or compressed, the third reinforcing frame 223 can share more stress, thereby reducing the stress concentration problem of the part of the box body 10 close to the connector 411, reducing the deformation of the box body 10, and reducing the risk of damage to the box body 10. It should be noted that the number of the third reinforcing frame 223 can be more than two, and the more than two third reinforcing frames 223 can be distributed along the longitudinal direction D1, and the more than two third reinforcing frames 223 can strengthen the carrier 1000 at multiple places, further improving the structural strength of the carrier 1000 and improving the safety of the carrier 1000. Referring to FIGS. 42 and 51, in some embodiments, the carrier 1000 further comprises a clamping rod 42 and a clamping rod operating member 421. When the carrier 1000 is placed on a vehicle seat or a trolley, the vehicle seat or the trolley can be provided with a fixing seat (not shown in the figure) in advance, and the fixing seat can be provided with a clamping mechanism (not shown in the figure), which is suitable for clamping with the clamping rod 42 to connect the carrier 1000 to the fixing seat. In some embodiments, the bottom surface of the base body 43 is provided with a folding groove 4302, and the clamping rod 42 has a folding state of being accommodated in the folding groove 4302 of the base body 43 and an unfolded state of extending from the bottom wall of the base body 43. One side of the base body 43 can be provided with a clamping rod operating member 42L. The clamping rod operating member 421 is connected to the clamping rod 42 through a mechanical structure arranged at the bottom of the base body 43. The clamping rod operating member 421 can drive the clamping rod 42 to switch from the folding state to the unfolded state through the above-mentioned mechanical structure in the process of moving from the initial position to the driving position, and can drive the clamping rod 42 to switch from the unfolded state to the folding state through the above-mentioned mechanical structure in the process of moving from the driving position to the initial position. When it is not necessary to connect the carrier 1000 to the fixing seat, the user can make the clamping rod 42 in the folding state by operating the clamping rod operating member 421.When it is needed to connect the carrier 1000 to a fixed seat, the user can operate the clamping rod operating member 421 to make the clamping rod 42 in an unfolded state. In some embodiments, referring to FIG. 52, the carrier 1000 can further comprise a canopy assembly 300, which can be attached to the box assembly 100 for covering the top opening HOO. The canopy assembly 300 can comprise a canopy cloth (not shown), two U-shaped canopy frames 31 and two connecting bases 32 connected between the two U-shaped canopy frames 31. The canopy cloth is connected with the two canopy frames 31. The canopy cloth can comprise a windproof cloth, a rainproof cloth, a sunshade cloth and / or a breathable mesh cloth, etc. according to different use purposes. The end of each canopy frame 31 is pivotally connected with the respective connecting base 32 and can be pivoted between a closed position and a maximum open position. In the present embodiment, when the canopy frame 31 is in the closed position, the canopy frame 31 is in a substantially horizontal state (parallel to the circumferential support), and when the canopy frame 31 is in the maximum open position, the canopy frame 31 is in a substantially vertical state (parallel to the height direction D3). Optionally, the connecting base 32 can be connected with the connecting base 211 by insertion or the like, thereby improving the reliability of the connection between the canopy assembly 300 and the support assembly 20. In some embodiments, the carrier 1000 further comprises a handle for the user to lift the carrier 1000. The two ends of the handle are respectively pivotally connected with the two connecting bases 32, and the handle can be rotated relative to the box body 10. The two ends of the handle are substantially located between the ends of the two canopy frames 31 on the corresponding sides. Referring to FIGS. 53 and 54, the box assembly 100 can further comprise an outer seat cloth 131. The outer seat cloth 131 can comprise an outer lateral wall cloth 1311 covering the outer lateral wall of the box body 10 and the support assembly 20 and exposed to the outside, and an outer bottom wall cloth 1312 covering the outer bottom wall of the box body 10. In the present embodiment, the outer bottom wall cloth 1312 is clamped between the box body 10 and the base body 43. Optionally, the outer bottom wall cloth 1312 can be provided with a reserved hole for the first fastener 444, the second fastener 445 or the like to pass through. In some embodiments, the canopy cloth can be connected with the outer seat cloth 131 by a zipper connection, a buckle assembly connection or the like. Referring to FIGS. 53 and 54, the outer surface of the outer seat cloth 131 is provided with a first connector 133. The canopy cloth can be provided with a second connector (not shown), which is connected with the first connector 133, thereby improving the firmness of the connection between the canopy cloth and the outer seat cloth 131. For example, the first connector 133 and the second connector are a first buckle and a second buckle that are buckled with each other. The first buckle is located on the outer side of the outer seat cloth 131. More specifically, the first buckle and the second buckle are magnetic buckles that are buckled with each other, and the first buckle is a buckling base.Of course, the connection between the first connector and the second connector is not limited to magnetic attraction, and the two can be connected by buckling, clamping, or other methods, which are not limited herein. In some embodiments, referring to FIGS. 55 and 56, the reinforcing frame A22 further comprises a fourth reinforcing frame 224 connected to the bottom edge of the second reinforcing frame 222 and extending towards the short peripheral wall 1022 of the box body 10 near the second reinforcing frame 222. The fourth reinforcing frame 224 can further improve the structural strength of the carrier 1000 and improve the anti-deformation ability of the carrier. Referring to FIGS. 53 and 55, the fourth reinforcing frame 224 is located inside the outer seat cloth 131, and the first connector 133 is located outside the outer seat cloth 131. In this embodiment, referring to FIGS. 53 and 58, the fourth reinforcing frame 224 is offset towards the side near the connection device 41 on the transverse D2, which is not located on the transverse center line of the box body 100 extending in the longitudinal direction. Optionally, referring to FIG. 53, the box assembly further comprises a traction member 15 connected to the reinforcing frame A22 and the first connector 133. In this embodiment, the traction member 15 is located inside the outer seat cloth 131, and is hidden after the installation of each part of the carrier 1000. In this embodiment, the traction member 15 is connected to the first connector 133 through the outer seat cloth 131. More specifically, the traction member 15 is connected to the reinforcing frame and the side of the outer side wall cloth 1311 where the first connector 133 is arranged. In this embodiment, the projection of the first connector 133 is located inside the projection of the traction member 15 along the longitudinal D1. It should be understood that a part of the first connector 133, a part of the traction member 15, and a part of the outer seat cloth 131 overlap along the longitudinal D1. Referring to FIGS. 53 and 58, the connection position of the traction member 15 to the bracket assembly is closer to the side where the connection device 41 is located relative to the first connector 133 along the transverse D2. Specifically, the traction member 15 extends obliquely in the transverse D2 direction, one end of which is close to the first connector 133, and the other end extends towards the side where the connection device 41 is located along the transverse D2. The traction member 15 extends from the first connector 133 to the fourth reinforcing frame 224 along the shortest path, so that the traction member 15 is tensioned. The traction member 15 is connected to the fourth reinforcing frame 224 and the first connector 133 corresponding to the short peripheral wall 1022. When the carrier 1000 is impacted, the carrier 1000 mayIn the embodiment, the fourth reinforcing frame 224 is connected with the first connector 133 through the traction member 15. Since the traction member 15 is in a tension state, when the carrier 1000 is impacted, the impact force is transmitted to the fourth reinforcing frame 224 through the traction member 15. In the embodiment, the impact force is borne by the bracket assembly 20, which reduces the dislocation deformation of the box body 10 and the ceiling assembly 300. Moreover, the obliquely extending traction member 15 can also bear the pulling force after the first connector 133 and the second connector are inclined, thereby reducing the risk of disconnection between the second connector and the first connector 133 and improving the reliability of the connection between the ceiling assembly 300 and the box body 10. For example, the fourth reinforcing frame 224 is provided with a connecting member 2231 (for example, the connecting member is a rivet). One end of the traction member 15 is provided with a sleeve hole, the connecting member 2231 passes through the sleeve hole and is connected to the fourth reinforcing frame 224, and the other end of the traction member 15 is connected with the first connector 133 through the outer side wall cloth 1311. The traction member 15 can be made of polyethylene (PE) or the like. For example, the outer side wall cloth 1311 can include a long side wall cloth corresponding to the long side of the peripheral wall 1021 and a short side wall cloth corresponding to the short side of the peripheral wall 1022. The first connector 133 is arranged on the short side wall cloth on the side where the second part 10b is located, and the fourth reinforcing frame 224 is also located on the outer surface of the second part 10b. The fourth reinforcing frame 224 can further improve the deformation resistance of the second part 10b. The first connector 133 on the side where the second part 10b is located is connected with the reinforcing frame A22 through the traction member 15, which can improve the reliability of the connection between the ceiling assembly 300 and the box body on the second part 10b. Of course, the carrier 1000 can also correspondingly arrange the fourth reinforcing frame 224 and the first connector 133 on the side where the first part 10a is located, and the two can be connected through the traction member 15, which is not limited herein. Optionally, referring to FIG. 54, the first connector 133 is provided with a connecting ring 1332 on the opposite sides, and the outer side wall cloth 1311 is provided with a connecting band 1313 for mounting the first connector 133. The connecting band 1313 is arranged in the two connecting rings 1332 of the first connector 133, and the two ends of the connecting band 1313 are fixedly connected with the outer side wall cloth 1311, so as to connect the first connector 133 with the outer side wall cloth 1311.More specifically, the first connector 133 is connected to the outer side wall cloth 1311 (e.g., connected by sewing) by the connecting band 1313, the traction member 15 is connected to the outer side wall cloth 1311 (e.g., connected by sewing), and the first connector 133 overlaps the traction member 15 (i.e., in the longitudinal direction D1, the orthographic projection of the first connector 133 on its corresponding peripheral wall short side 1022 is located within the orthographic projection of the traction member 15 on the peripheral wall short side 1022 ±). Optionally, the connecting band 1313, the outer side wall cloth 1311, and the traction member 15 can be sewn together at the same position after stacking, so as to realize the connection of the first connector 133, the outer side wall cloth 1311, and the traction member 15. Of course, the first connector 133 can also be connected to the outer seat cloth 131 in other ways, which are not limited herein. In some embodiments, referring to FIGS. 57 and 58, the base 40 further comprises a fixing member 44. When the insertion member 411 is inserted into the connecting accessory of the vehicle seat, if the carrier 1000 is squeezed or impacted, the insertion member 411 is the main force-bearing component. The first end 441 of the fixing member 44 is connected to the support assembly 20, and the second end 442 is connected to the insertion member 411 (in this embodiment, the second end 442 of the fixing member 44 is connected to the second insertion member 411b). When the insertion member 411 bears a load, the fixing member 44 can transmit the force to the support assembly 20, and the stress is borne by the support assembly 20. The support assembly 20 is usually made of metal material, which has high strength and low risk of damage, thereby improving the safety of the carrier 1000. The fixing member 44 can be made of metal material, thereby improving the structural strength of the fixing member 44 and avoiding damage of the fixing member 44 when transmitting stress. Of course, the fixing member 44 can also be made of other materials with high tensile strength, which are not limited herein. Optionally, the first end 441 of the fixing member 44 can be connected to the third reinforcing frame 223. For example, the fixing member 44 is located between the third reinforcing frame 223 and the base body 43, the first fastener 444 passes through the base body 43, the first end 441 of the fixing member 44, and the third reinforcing frame 223 in sequence, thereby fixing the first end 441 of the fixing member 44 between the base body 43 and the third reinforcing frame 223. The second end 442 of the fixing member 44 can be connected to the pivoting mechanism of the second insertion member 411b close to the third reinforcing frame 223. For example, the second fastener 445 passes through the pivoting mechanism, the second end 442 of the fixing member 44, and the base body 43, thereby fixing and connecting the second end 442 of the fixing member 44 to the pivoting mechanism and the base body 43. When the insertion member 411 is stressed, the load can be transmitted to the third reinforcing frame 223 through the pivoting mechanism and the fixing member 44.In addition, the fixing member 44 connects the third reinforcing frame 223 and the second connector 411b, and the fixing member 44 has a relatively short length, which can reduce the risk of interference between the fixing member 44 and other components. In some embodiments, the fixing member 44 further comprises a third end 443 connected to the base 40 by a third fastener 446. After the third end 443 of the fixing member 44 is connected to the base 40, the stability of the fixing member 44 can be improved, and the fixing member 44 can be prevented from rotating around the first fastener 444 under the action of the connector 411. The technical features of the above-described embodiments can be combined in any manner. For brevity, not all possible combinations of the technical features in the above-described embodiments are described. For example, the ceiling assembly 300 with the inclined limiting side wall 3211 shown in FIGS. 3-8 can additionally or alternatively be applied to the embodiments of FIGS. 9-58 in any combination with the features in these embodiments. The handle 60 shown in FIGS. 5-8 can additionally or alternatively be applied to the embodiments of FIGS. 1-4 and 9-58 in any combination with the features in these embodiments. The connection device 41 with one or more connectors 4111 biased to one side shown in FIGS. 5-13 can additionally or alternatively be applied to the embodiments of FIGS. 1-4 and 14-58 in any combination with the features in these embodiments. The ventilation structure shown in FIGS. 14-39, including the ventilation hole 432, the receiving cavity 401, the dust baffle 431, the leakage hole 40111, the ventilation channel 1011, the air guide structure 40121, the opening portion 1024, the air permeable opening 1301, the air vent hole matrix 1303, etc., can additionally or alternatively be applied to the embodiments of FIGS. 1-13 and 40-58 in any combination with the features in these embodiments. The at least two reinforcing frames A22 and the connection device 41 shown in FIGS. 40-58 can additionally or alternatively be applied to the embodiments of FIGS. 1-39 in any combination with the features in these embodiments, and so on. As long as the combinations of the technical features do not contradict each other, they should be considered within the scope of the present disclosure. The above-described embodiments only express several implementation manners of the present disclosure, and the description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent. It should be noted that, for those skilled in the art, without departing from the concept of the present disclosure, a number of modifications and improvements can be made, which are within the scope of the present disclosure. Therefore, the scope of protection of the present patent should be subject to the appended claims.

Claims

CLAIM 1. A carrier, characterized by, The box assembly defines a containing space; and a roof assembly attached to the box assembly, the roof assembly comprising: a connecting seat; and a roof frame pivoted to the connecting seat and pivotable between a closed position and a maximum open position; wherein the roof frame is obtuse-angled relative to a maximum open angle thereof opened in the closed position in the maximum open position. The connecting seat has a stop portion; the stop portion comprises an inclined side wall inclined toward a center side of the connecting seat. A lower end of the inclined side wall is provided with a circular-arc-shaped concave wall; a top end of the circular-arc-shaped concave wall is offset by a distance toward the center side of the connecting seat compared to a bottom end of the circular-arc-shaped concave wall.

2. The carrier of claim 1, characterized in that The connecting seat comprises a limiting seat and a pivoting seat connected to at least one side of the limiting seat, the pivoting seat comprises a pivot shaft, the stop portion is arranged on the limiting seat, when the roof frame is pivoted to the maximum open position around the pivot shaft, the stop portion abuts against the roof frame to prevent further pivoting opening of the roof frame.

3. The carrier of claim 2, characterized by The roof frame comprises a roof rod and a pivot cylinder connected to a terminal end of the roof rod; the pivot cylinder of the roof frame is sleeved on the pivot shaft to be pivoted to the connecting seat.

4. The carrier of claim 3, characterized by The circular-arc-shaped concave wall is arranged on the limiting seat, the circular-arc-shaped concave wall extends along a circular arc with the pivot shaft as a center, the pivot cylinder has a circular-arc-shaped convex wall extending along a circular arc with the pivot shaft as a center, when the roof frame is pivoted around the pivot shaft, the circular-arc-shaped convex wall slides against and pivots along the circular-arc-shaped concave wall.

5. The carrier of claim 4, characterized by The pivoting seat further comprises a pivoting seat base, one side of the pivoting seat base is connected to the limiting seat, the pivot shaft extends from the pivoting seat base.

6. The carrier of claim 5, characterized by The roof rod comprises a terminal rod portion and a central rod portion except the terminal rod portion, the terminal rod portion and the central rod portion are bent and transitioned.

7. The carrier of claim 4, characterized by The box assembly defines a containing space; and a roof assembly attached to the box assembly, the roof assembly comprising: a connecting seat; and a roof frame pivoted to the connecting seat and pivotable between a closed position and a maximum open position; wherein the roof frame is obtuse-angled relative to a maximum open angle thereof opened in the closed position in the maximum open position.

8. The carrier of claim 5, wherein The connecting seat has a stop portion; the stop portion comprises an inclined side wall inclined toward a center side of the connecting seat.

9. A carrier, characterized by A lower end of the inclined side wall is provided with a circular-arc-shaped concave wall; a top end of the circular-arc-shaped concave wall is offset by a distance toward the center side of the connecting seat compared to a bottom end of the circular-arc-shaped concave wall. The connecting seat comprises a limiting seat and a pivoting seat connected to at least one side of the limiting seat, the pivoting seat comprises a pivot shaft, the stop portion is arranged on the limiting seat, when the roof frame is pivoted to the maximum open position around the pivot shaft, the stop portion abuts against the roof frame to prevent further pivoting opening of the roof frame. 35 The roof frame comprises a roof rod and a pivot cylinder connected to a terminal end of the roof rod; the pivot cylinder of the roof frame is sleeved on the pivot shaft to be pivoted to the connecting seat.

10. The carrier of claim 9, characterized by The circular-arc-shaped concave wall is arranged on the limiting seat, the circular-arc-shaped concave wall extends along a circular arc with the pivot shaft as a center, the pivot cylinder has a circular-arc-shaped convex wall extending along a circular arc with the pivot shaft as a center, when the roof frame is pivoted around the pivot shaft, the circular-arc-shaped convex wall slides against and pivots along the circular-arc-shaped concave wall. The pivoting seat further comprises a pivoting seat base, one side of the pivoting seat base is connected to the limiting seat, the pivot shaft extends from the pivoting seat base. The roof rod comprises a terminal rod portion and a central rod portion except the terminal rod portion, the terminal rod portion and the central rod portion are bent and transitioned. The box assembly defines a containing space; and a roof assembly attached to the box assembly, the roof assembly comprising: a connecting seat; and a roof frame pivoted to the connecting seat and pivotable between a closed position and a maximum open position; wherein the roof frame is obtuse-angled relative to a maximum open angle thereof opened in the closed position in the maximum open position. The connecting seat has a stop portion; the stop portion comprises an inclined side wall inclined toward a center side of the connecting seat. A lower end of the inclined side wall is provided with a circular-arc-shaped concave wall; a top end of the circular-arc-shaped concave wall is offset by a distance toward the center side of the connecting seat compared to a bottom end of the circular-arc-shaped concave wall. The connecting seat comprises a limiting seat and a pivoting seat connected to at least one side of the limiting seat, the pivoting seat comprises a pivot shaft, the stop portion is arranged on the limiting seat, when the roof frame is pivoted to the maximum open position around the pivot shaft, the stop portion abuts against the roof frame to prevent further pivoting opening of the roof frame. The roof frame comprises a roof rod and a pivot cylinder connected to a terminal end of the roof rod; the pivot cylinder of the roof frame is sleeved on the pivot shaft to be pivoted to the connecting seat. The circular-arc-shaped concave wall is arranged on the limiting seat, the circular-arc-shaped concave wall extends along a circular arc with the pivot shaft as a center, the pivot cylinder has a circular-arc-shaped convex wall extending along a circular arc with the pivot shaft as a center, when the roof frame is pivoted around the pivot shaft, the circular-arc-shaped convex wall slides against and pivots along the circular-arc-shaped concave wall. The pivoting seat further comprises a pivoting seat base, one side of the pivoting seat base is connected to the limiting seat, the pivot shaft extends from the pivoting seat base. The roof rod comprises a terminal rod portion and a central rod portion except the terminal rod portion, the terminal rod portion and the central rod portion are bent and transitioned.

11. The carrier of claim 10, characterized by The one or more insertion portions are two insertion portions, and the first center line is a center line in the height direction of a midpoint of a line connecting geometric centers of the two insertion portions in the unfolded state.

12. A carrier, characterized by The box assembly includes a box body and a connecting device arranged at a lower portion of the box body, and the connecting device is adapted to be connected with a connecting fitting of a vehicle seat; the support assembly is connected to the box body, and the support assembly includes at least two reinforcing frames, and at least some of the at least two reinforcing frames are arranged along a longitudinal direction of the vehicle.

13. The carrier of claim 12, characterized by The box assembly has a center plane extending in the height direction, and a center line extending in the height direction of the connecting device is offset toward one side of the longitudinal direction relative to the center plane; the support assembly is provided with at least two reinforcing frames on the side of the center plane away from the center line.

14. The carrier of claim 13, characterized by The support assembly is provided with the reinforcing frames on both sides of the center plane, and the reinforcing frames on both sides of the center plane are asymmetrically distributed; and / or the number of the reinforcing frames of the support assembly on the side of the center line is less than the number of the reinforcing frames on the side of the center plane away from the center line.

15. The carrier of claim 13, characterized by The reinforcing frames include a first reinforcing frame, a second reinforcing frame, and a third reinforcing frame, the first reinforcing frame and the second reinforcing frame are symmetrically distributed on both sides of the center plane, and the second reinforcing frame and the third reinforcing frame are located on the side of the center plane away from the center line.

16. The carrier of claim 15, characterized by The third reinforcing frame is located between the center plane and the second reinforcing frame. 36 17. The carrier of claim 15, wherein: The connecting device includes one or more insertion portions, and the insertion portions are adapted to be inserted into the connecting fitting of the vehicle seat; the third reinforcing frame is offset by a preset interval relative to the insertion portions in the longitudinal direction.

18. The carrier of claim 15, characterized by In the longitudinal direction, the distance between the third reinforcing frame and the second reinforcing frame is greater than the distance between the third reinforcing frame and the connecting device, and / or in the longitudinal direction, the distance between the third reinforcing frame and the center plane is less than the distance between the third reinforcing frame and the second reinforcing frame.

19. The carrier of claim 17, wherein: The connecting device includes two insertion portions, and the center plane is located between the two insertion portions.

20. The carrier of claim 12, wherein: The support assembly further includes a circumferential support, the circumferential support is perpendicular to the height direction of the box body and is arranged around the box body, and the reinforcing frames are connected to the circumferential support.

21. The carrier of claim 12, wherein: The shape of the reinforcing frame corresponds to the shape of the bottom outer wall of the box body.

22. The carrier of claim 15, wherein: The reinforcing frame further includes a fourth reinforcing frame, one end of the fourth reinforcing frame is connected to the second reinforcing frame, and the other end of the fourth reinforcing frame extends to the peripheral wall of the box body in a direction perpendicular to the second reinforcing frame; and the fourth reinforcing frame is offset in the lateral direction toward the connecting device relative to a transverse center line extending in the longitudinal direction.

23. The carrier of claim 22, characterized by The utility model also includes a roof assembly and an outer seat cloth; the roof assembly is attached to the box body, the roof assembly includes a canopy cloth, the canopy cloth is used for shielding a top opening of the box body; the outer seat cloth covers outer surfaces of the support assembly and the box body, an outer surface of the outer seat cloth is provided with a first connector, and the first connector is used for being connected with the canopy cloth.

24. The carrier of claim 23, wherein: The first connector is located on a side of the box body away from the center line; and the fourth reinforcing frame is located on a side of the center plane away from the center line and extends from the second reinforcing frame to a direction away from the center plane.

25. The carrier of claim 15, wherein: The connecting device includes one or more adapters, the adapters are adapted to be plugged into a connecting fitting of a vehicle seat; the box assembly further includes a base, the base includes a base body, the base body is located below the box body, and the connecting device is arranged on the base body. The base includes a fixing member, a first end of the fixing member is connected with the support assembly, and a second end of the fixing member is connected with the adapter.

26. The carrier of claim 25, wherein The adapter includes a first adapter away from the second reinforcing frame and a second adapter close to the second reinforcing frame, and the second end of the fixing member is connected with the second adapter.

27. The carrier of claim 12, wherein: The utility model also includes a roof assembly and an outer seat cloth; the roof assembly is attached to the box body, the roof assembly includes a canopy cloth, the canopy cloth is used for shielding a top opening of the box body; the outer seat cloth covers outer surfaces of the support assembly and the box body, an outer surface of the outer seat cloth is provided with a first connector, and the first connector is used for being connected with the canopy cloth; the carrier further includes a traction member, one end of the traction member is connected with the support assembly, the other end is connected with the outer seat cloth corresponding to the first connector, and the connecting position of the traction member and the support assembly is close to a side where the connecting device is located relative to the first connector in the transverse direction.

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