Fixing belt assembly, connecting and fixing apparatus, isofix connecting assembly, and carrier

Abstract

Provided in the present disclosure are a fixing belt assembly, a connecting and fixing apparatus, an ISOFIX connecting assembly, and a carrier, the fixing belt assembly being used for fixing the carrier to a vehicle seat, the carrier comprising a box body and a bottom support member, and the bottom support member being detachably connected to the box body and arranged below the box body.

Description

[0001] TECHNICAL FIELD The present disclosure relates to a carrier, particularly a carrier suitable for use on vehicle seats. Background: Some existing carriers require separate LATCH and / or Top Tether assemblies to secure them to vehicle seats. This means that users must always have LATCH and / or Top Tether assemblies available to secure the carrier when needed. However, when not in use, these assemblies tend to become disorganized and difficult to store, or require additional space for storage, which can lead to the loss of related components. SUMMARY OF THE INVENTION The present disclosure provides a strap assembly for securing a carrier to a vehicle seat. The carrier includes a case body and a bottom support member, the bottom support member being detachably connected to the case body and disposed below the case body. The strap assembly is configured to connect to the carrier, and at least a portion of the strap assembly is retractable within a storage space within the carrier. In one embodiment, the storage space is provided on the bottom support member. In one embodiment, the fixing strap assembly includes a first strap assembly and a second strap assembly. The first strap assembly includes at least a portion of the first strap assembly extending from a side of the carrier away from the vehicle seat backrest to the bottom of the carrier. One end of the first strap assembly is provided with a first connecting device, which connects to the top of the vehicle seat. A second strap assembly is provided on the bottom of the carrier. One end of the second strap assembly is connected to the other end of the first strap assembly. The other end of the second strap assembly is provided with a second connecting device, which connects to the vehicle seat to secure the carrier to the vehicle seat. In one embodiment, the first strap assembly and the second strap assembly are fixedly connected to each other, or the first strap assembly and the second strap assembly are integrally formed. In one embodiment, the storage space includes a first storage slot and a second storage slot. The first receiving groove is configured to receive the second connecting device and at least a portion of the first belt assembly, and the second receiving groove is configured to receive the second connecting device and at least a portion of the second belt assembly. In one embodiment, the first receiving groove and the second receiving groove are respectively disposed on opposite sides of the bottom support member along its width direction. In one embodiment, the first receiving groove is disposed in the middle of the side of the bottom support member adjacent to the backrest of the vehicle seat, and the second receiving groove is disposed in the middle of the opposite side of the first receiving groove. In one embodiment,The carrier also includes a bottom cover that covers the exterior of the bottom support. The bottom cover is provided with a first storage cover and a second storage cover that can be opened and closed. The first storage cover is configured to cover the first storage slot, and the second storage cover is configured to cover the second storage slot. In one embodiment, the bottom support is provided with a strap retaining structure that is configured to position the strap assembly so that it is at least partially connected to the carrier. In one embodiment, the strap retaining structure includes: a first retaining structure configured to retain the second strap assembly, the first retaining structure being disposed proximate to the second connecting device or on a side of the bottom support proximate to the vehicle seat backrest; and a second retaining structure configured to retain the first strap assembly and / or the second strap assembly, the second retaining structure being disposed proximate to the connection point between the first strap assembly and the second strap assembly or on a side of the bottom support proximate to the vehicle seat backrest. In one embodiment, the number of the first limiting structures is proportional to the number of the second connecting devices, and the number of the first limiting structures is proportional to the number of ends of the first strap assembly connected to the second strap assembly. In one embodiment, the carrier further includes: a reinforcement bracket disposed on the bottom side of the bottom support member, wherein the fixed strap limiting structure is disposed on the reinforcement bracket. In one embodiment, the reinforcement bracket includes: a first reinforcement bar extending along the length of the bottom support member; and a second reinforcement bar connected to the first reinforcement bar and extending along the width of the bottom support member. The fixed strap limiting structure includes a first limiting structure for limiting the position of the second strap assembly and a second limiting structure for limiting the position of the first strap assembly. The first limiting structure is disposed at the connection between the first reinforcement bar and one end of the first reinforcement bar, and the second limiting structure is disposed at the other end of the second reinforcement bar. In one embodiment, two first reinforcing rods and two second reinforcing rods are provided. The two first reinforcing rods are arranged substantially parallel to each other, and the two second reinforcing rods are respectively arranged between the two first reinforcing rods and spaced apart from each other to form an annular structure with the two first reinforcing rods. Each of the two first reinforcing rods is provided with a first limiting structure, and each of the two second reinforcing rods is provided with a second limiting structure. In one embodiment, the second reinforcing rods have a non-linear structure, such that the distance between the two second limiting structures is greater than or equal to the distance between the two first limiting structures. In one embodiment,The second reinforcement rod has a non-linear structure and includes a first section and a second section. The first section extends generally linearly along a transverse axis, while the second section is slightly inclined relative to the transverse axis, such that the second sections of the two second reinforcement rods are tilted toward each other. In one embodiment, the fixing strap retaining structure includes two first retaining structures and two second retaining structures. The spacing between the two second retaining structures is greater than or equal to the spacing between the two first retaining structures. In one embodiment, the second reinforcement rod includes an extension section having an arcuate structure to mate with a side of the bottom support member facing away from the backrest of the vehicle seat, and the second retaining structure is disposed along the extension section. In one embodiment, the fixing strap retaining structure includes a base and a retaining rod. The base is disposed on the reinforcement bracket, and the retaining rod is disposed on the base, such that the fixing strap assembly passes between the base and the retaining rod. In one embodiment, two fixing belt limiting structures are provided, and the two fixing belt limiting structures are provided at both ends of the bottom support member along the longitudinal axis thereof, respectively limiting the second belt assembly. In one embodiment, the two fixing strap retaining structures are symmetrically arranged about a midline of the bottom support member in the longitudinal direction. In one embodiment, the fixing strap retaining structure comprises a first tubular structure and / or a second tubular structure. The first tubular structure extends along the longitudinal direction and defines a gap therein for the fixing strap assembly to pass through. The second tubular structure is arranged to intersect the first tubular structure, and a gap is defined between the first tubular structure, the second tubular structure, or the third and second tubular structures for the fixing strap assembly to pass through. In one embodiment, the first tubular structure is arranged substantially perpendicular to the second tubular structure. In one embodiment, at least a portion of the second tubular structure is inclined relative to both the longitudinal and transverse directions of the carrier, such that the distance between the first ends of the two second tubular structures of the two fixing strap retaining structures is smaller than the distance between the second ends of the two second tubular structures. In one embodiment, the first and second tubular structures are separate structures that are interconnected and connected. In one embodiment, the first tubular structure and the second tubular structure are integrally formed. In one embodiment, the reinforcement bracket includes a reinforcement rod disposed in the middle of the bottom support member in the transverse direction and extending along the longitudinal direction. In another embodiment, the bottom support member is provided with two support legs, one at each end of the bottom support member in the longitudinal direction.The two ends of the reinforcing rod are respectively constrained between each of the support legs and the bottom support member to retain the reinforcing rod in place. In one embodiment, two fixing strap retaining structures are provided, one at each end of the reinforcing rod, to respectively retain the second strap assembly in place. In one embodiment, the fixing strap retaining structure comprises a first tubular structure or a second tubular structure. The first tubular structure extends along the longitudinal axis and is fitted over and secured to the reinforcing rod. A clearance for the fixing strap assembly to pass through is defined between the inner surface of the first tubular structure and the outer surface of the reinforcing rod. The second tubular structure is arranged to intersect the first tubular structure and to define the clearance for the fixing strap assembly to pass through. In one embodiment, the fixing strap retaining structure comprises a first tubular structure and a second tubular structure. The first tubular structure extends along the longitudinal axis and is fitted over the reinforcing rod. The second tubular structure is arranged to intersect the first tubular structure. A gap is formed between the inner surface of the second tubular structure and the outer surface of the reinforcement rod for the securing strap assembly to pass through. In one embodiment, a rib is formed on the sidewall of the first tubular structure within the second tubular structure, and the gap is between the rib and the inner surface of the upper wall of the second tubular structure. In one embodiment, the reinforcement rod is located between the two sidewalls of the first tubular structure. In one embodiment, the first and second tubular structures are separate structures that are interconnected and connected. In one embodiment, the first and second tubular structures are integrally formed. The present disclosure also provides a vehicle. The vehicle includes the securing strap assembly according to any of the aforementioned embodiments. The present disclosure provides a cushioning structure. The cushioning structure is disposed on a connecting and fixing device used to secure the vehicle to a vehicle seat. The connecting and fixing device has a first connecting end and a second connecting end. The first connecting end is connected to a first anchor point, and at least a portion of the connecting and fixing device is routed from a side of the vehicle away from the vehicle seat backrest to the bottom of the vehicle, so that the second connecting end is connected to the second anchor point. In one embodiment, the buffer structure is disposed between the first connection end and the second connection end of the connection and fixing device. In another embodiment, the buffer structure is disposed at the bottom of the carrier. In one embodiment, the buffer structure includes at least one buffer belt, the ends of which are connected to the connection and fixing device via a first fixing member and a second fixing member, respectively. In one embodiment, at least one buffer belt is disposed above the connection and fixing device. In one embodiment,The at least one buffer strip includes a ring-shaped structure or a folded-in-half buffer strip. In one embodiment, the at least one buffer strip includes multiple buffer strips, each having the same or different elongation. In one embodiment, the initial effective length of the buffer strip between the first and second fixing members is less than the initial effective length of the connecting and fixing device between the first and second fixing members. In one embodiment, the elongation of the buffer strip is greater than the elongation of the connecting and fixing device on which the buffer strip is provided. In one embodiment, the buffer structure includes at least one first knotting point, the at least one first knotting point being provided on the connecting and fixing device and located between the first and second fixing members. In one embodiment, the buffer strip includes at least one second knotting point. When the at least one first knotting point is released, the effective buffer length of the buffer strip between the first and second fixing members is less than the effective length of the connecting and fixing device between the first and second fixing members. In one embodiment, the buffer strip includes at least one second knotting point. When the at least one second knot point is released, the effective buffering length of the buffer belt between the first and second fixing members is greater than the effective length of the connecting fixture between the first and second fixing members. The elongation of the buffer belt is less than the elongation of the connecting fixture on which the buffer belt is provided. In one embodiment, the buffer structure includes at least one first knot point, which is disposed on the connecting fixture and located between the first and second fixing members. The present disclosure also provides a connecting fixture. The connecting fixture includes: a first and second belt connecting components that are detachably connected to each other, one end of the first belt connecting component forming a first connecting end of the connecting fixture, the other end of the first belt connecting component connected to one end of the first belt connecting component, and the other end of the second belt connecting component forming a second connecting end of the connecting fixture; and the buffer structure according to any of the preceding embodiments. In one embodiment, the first belt connecting component includes a first belt structure and a second belt structure having different elongations. The first and second belt structures are interchangeable and are each detachably connected to the second belt connecting component. In one embodiment, the elongation of the first belt structure is greater than the elongation of the second belt structure. When the first anchor point is closer to the carrier, the first belt structure is connected to the second belt connection assembly. When the first anchor point is farther from the carrier,The second strap structure is connected to the second strap connection assembly. In one embodiment, the buffer structure is provided on at least one of the first strap structure, the second strap structure, and the second strap connection assembly. The present disclosure also provides a carrier. The carrier is secured to a vehicle seat using the connection and fixing device described in any of the aforementioned embodiments. In one embodiment, the carrier includes a box body and a bottom support member connected to the box body. The bottom support member is provided with two belt stoppers, located at opposite ends of the bottom of the bottom support member along the longitudinal axis, for passing at least a portion of the connection and fixing device. The buffer structure is provided at the portion of the connection and fixing device that passes through the belt stoppers. The present disclosure provides a connection and fixing device for securing the carrier to a vehicle seat. The connection and fixing device includes a first connection end and a second connection end, respectively connected to a first anchor point and a second anchor point. At least a portion of the connection and fixing device is disposed around a side of the carrier away from the vehicle seat backrest. The connection and fixing device includes a first belt connection assembly and a second belt connection assembly that are detachably connected to each other. The second belt connection assembly includes a first belt structure and a second belt structure. The first and second belt structures are interchangeable and removably connected to the second belt connection assembly. The first and second belt structures have different elongation rates. In one embodiment, the first connecting end of the connecting and fixing device is connected to a first anchor point on or above the top of the vehicle seat. At least a portion of the connecting and fixing device is routed from above the carrier, away from the vehicle seat backrest, to below the carrier, so that the second connecting end of the connecting and fixing device is connected to a second anchor point on the vehicle seat. In one embodiment, the first belt structure includes a first belt body and a first end and a second end, respectively, located at either end of the first belt body. When the first belt structure is connected to the second belt connection assembly, the first end of the first belt structure constitutes the first connecting end of the connecting and fixing device, while the second end is removably connected to the second belt connection assembly. The second belt structure includes a second belt body and a first end and a second end, respectively, located at the ends of the second belt body. When the second belt structure is connected to the second belt connection assembly, the first end of the second belt structure constitutes the first connection end of the connection and fixing device, and the second end is detachably connected to the second belt connection assembly. The second end of the second belt connection assembly constitutes the second connection end. In one embodiment, the elongation of the first belt structure is greater than that of the second belt structure. When the first anchor point is close to the load,The first strap structure is connected to the second strap connection assembly. When the first anchor point is farther from the carrier, the second strap structure is connected to the second strap connection assembly. In one embodiment, the elongation of the first strap structure is 17% to 26%, and the elongation of the second strap structure is 7% to 16%. In another embodiment, the elongation of the first strap structure is 21%, and the elongation of the second strap structure is 12%. In another embodiment, the initial effective length of the first strap structure is greater than the initial effective length of the second strap structure. In one embodiment, at least one of the first strap structure, the second strap structure, and the second strap connection assembly is provided with a cushioning structure. In one embodiment, the first strap structure and the second strap structure are Top Tether assemblies, and the second strap connection assembly is a LATCH assembly. The present disclosure provides an ISOFIX connection assembly for securing a carrier case to a vehicle seat. The ISOFIX connection assembly includes a locking portion, a connecting portion, and a mounting portion. The locking portion connects to the ISOFIX interface provided on the vehicle seat. The mounting portion is fixedly connected to the case. The connecting portion is fixedly connected to the engaging portion and movably connected to the mounting portion to drive the engaging portion to move relative to the mounting portion. In one embodiment, the connecting portion is movable along the mounting portion in the longitudinal direction of the housing to adjust the position of the engaging portion relative to the housing, thereby adapting the housing to different positions on the vehicle seat. In one embodiment, the connecting portion includes a sliding member and a connecting member. The sliding member is slidably pivotally connected to the mounting portion. The connecting member is connected between the engaging portion and the sliding member to drive the engaging portion to slide and / or pivot relative to the mounting portion. In one embodiment, the mounting portion is tubular, and the sliding member is formed as a circular sleeve that fits over the mounting portion. In one embodiment, the TSOFTX connection assembly is provided with at least two K-joints. The connecting member includes a synchronizer and a connecting member. The synchronizer connects the at least two engaging portions together to ensure synchronized movement of the at least two K-joints. The connecting member is connected between the synchronizer and the sliding member. In one embodiment, the ISOFIX connection assembly further comprises a locking device. The locking device is provided between the connection portion and the mounting portion, and is used to lock the connection portion to the mounting portion and release the connection portion from the mounting portion. In one embodiment, the locking device comprises a locking member and a release operating member. The locking member can cooperate with the locking portion provided on the mounting portion and has a locked position and a released position. When the locking member is locked, the locking member is released.When the locking member is in the locked position, it engages with the locking portion, locking the connecting portion relative to the mounting portion. When the locking member is in the released position, it disengages from the locking portion, allowing the connecting portion to be released relative to the mounting portion. The release operating member is operated to move the locking member from the locked position to the released position. In one embodiment, the release operating member is fixedly connected to the locking member and slidably disposed relative to the mounting portion to move relative to the mounting portion together with the locking member. In one embodiment, the locking portion includes a first locking portion and a second locking portion. The first locking portion and the second locking portion are respectively disposed at different positions on the mounting portion along the longitudinal direction to lock the connecting portion in different positions relative to the mounting portion. In one embodiment, the locking device further includes a reset member that provides a force biasing the locking member toward the locked position. In one embodiment, the ISOFIX connection assembly further includes limit members disposed at both ends of the mounting portion to limit the position of the connecting portion. In one embodiment, the connecting portion is pivotable relative to the mounting portion so that the connecting portion and the engaging portion are received within the housing. The locking portion further includes a third locking portion, disposed on opposite sides of the first locking portion and the second locking portion, configured to engage with the locking member to lock the received connecting portion. In one embodiment, the connecting portion is pivotable relative to the mounting portion so that the connecting portion and the engaging portion are received within the housing, and the housing is provided with a locking mechanism for locking the connecting portion received within the housing. In one embodiment, the locking mechanism includes a connecting base and a locking member, the connecting base being connected to the housing, the locking member being disposed on a side of the connecting base proximal to the connecting portion. In one embodiment, the locking member is an undercut protruding from one side of the connecting base, capable of forming an interference fit with the connecting portion to lock the ISOFIX connection assembly. In another embodiment, the locking member is a spring protruding from one side of the connecting base. When the ISOFIX connection assembly is stored, at least a portion of the connecting portion presses against the spring sheet to deform it, thereby passing over the spring sheet and locking it between the spring sheet and the box. In one embodiment, the locking member is an elastic protrusion provided on the box, and a groove is correspondingly provided on the connecting portion. The elastic protrusion and the groove cooperate with each other to lock the ISOFIX connection assembly. The present disclosure also provides a carrier JK, which only includes a box. The box provides a storage space and includes a box body and a bottom.The bottom support member is detachably connected to the box body. The ISOFIX connection assembly according to any of the preceding embodiments is disposed on the bottom support member. In one embodiment, the bottom support member is provided with a component storage slot that provides storage space for the ISOFIX connection assembly. In one embodiment, the bottom support member is provided with a locking mechanism that, when the ISOFIX connection assembly is stored in the component storage slot, locks the connection portion of the ISOFIX connection assembly to maintain the ISOFIX connection assembly in the component storage slot. In one embodiment, the locking mechanism is disposed at an edge of the component storage slot. In one embodiment, the carrier further includes a reinforcement bracket disposed on the bottom side of the bottom support member and comprising a first reinforcement bar and two second reinforcement bars. The first reinforcement bar extends along the longitudinal direction and is connected between the two second reinforcement bars. The mounting portion is disposed between the two second reinforcement bars and is spaced a distance from the first reinforcement bar. In one embodiment, both ends of the mounting portion are connected to one end of each of the two second reinforcing bars, and both ends of the first reinforcing bar are connected to or near the other end of each of the two second reinforcing bars. In one embodiment, the carrier further includes a strap assembly connected to the box to secure the box to the vehicle seat, and comprising a strap body, a first connecting end, and a second connecting end. The strap body is positioned between the first and second connecting ends. The first connecting end is connected to the vehicle seat, at least a portion of the strap body wraps around a side of the box away from the vehicle seat backrest, and the second connecting end is connected to the bottom support member or the ISOFIX connection assembly. In one embodiment, the second connecting end is connected to the mounting portion of the ISOFIX connection assembly. In one embodiment, the bottom support member is provided with a strap receiving slot for receiving the strap assembly. In one embodiment, a belt fixing structure is provided on the bottom support member for connecting at least a portion of the fixing belt assembly to the bottom support member. The belt fixing structure is provided on a side of the bottom support member away from the backrest of the vehicle seat, and the second connecting end of the fixing belt assembly is connected to the belt fixing structure. In one embodiment, the belt fixing structure includes a fixing seat and a fixing pin. The fixing seat is provided at or near an edge of the bottom support member away from the backrest of the vehicle seat. The fixing pin is provided in the fixing seat and is spaced a distance from the bottom surface of the fixing seat so that theThe second connection end of the securing strap assembly is looped around the securing pin. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings are included herein to provide a further understanding of the present invention and are incorporated into and form a part of this specification. They illustrate embodiments of the present invention and, together with the following description, serve to illustrate the concepts of the present invention. FIG1 is a perspective view of a carrier according to a first embodiment of the present invention secured to a vehicle seat. FIG2 is another perspective view of the carrier and securing strap assembly shown in FIG1 , with the bottom cover removed. FIG3 and FIG4 are perspective views of the securing strap assembly and the carrier shown in FIG2 , respectively. FIG5A to FIG5C are perspective views of various components of the bottom support member. FIG6 is a perspective view of a reinforcement bracket of a carrier according to a first embodiment of the present invention. FIG7A is a perspective view of a first retaining structure of the carrier according to the first embodiment of the present invention. FIG7B and FIG7C are perspective views of a second retaining structure of the carrier according to the first embodiment of the present invention. FIG8 is a bottom perspective view of the carrier shown in FIG1 and the securing strap assembly in use. FIG9 is a perspective view of the carrier shown in FIG8 with the strap assembly stowed. FIG10 is a perspective view of a carrier according to a second embodiment of the present disclosure secured to a vehicle seat. FIG11 is a perspective view of the carrier and strap assembly shown in FIG10 from another angle. FIG12A is another perspective view of the carrier and strap assembly shown in FIG11 with the carrier's bottom cover removed. FIG12B is a partial cross-sectional view taken along line HH in FIG12A. FIG12C is a partial cross-sectional view taken along line JJ in FIG12A. FIG13 is a perspective view of the carrier shown in FIG11 in another state, in which the fixing belt assembly is stored. FIG14 is a perspective view of the carrier shown in FIG13 after the bottom cover is removed. FIG15A is a perspective view of the carrier and the fixing belt assembly according to the third embodiment of the present disclosure, in which the bottom cover is removed. FIG15B is a partial cross-sectional view taken along line KK in FIG15A. FIG15C is a partial cross-sectional view taken along line NN in FIG15A. FIG16 is a perspective view of the carrier shown in FIG15A in another state, in which the fixing belt assembly is stored. FIG17 is a bottom perspective view of the carrier according to the fourth embodiment of the present disclosure. FIG18 is a schematic bottom view of the carrier shown in FIG17. FIG19A is a perspective view of the fixing belt limiting structure shown in FIG17. FIG19B is a top view of the fixing belt limiting structure shown in FIG19A. FIG20 is a perspective view of the carrier shown in FIG17 when it is fixed to a vehicle seat. FIG21 is a rear view of the carrier according to the fifth embodiment of the present disclosure. FIG1 is a perspective view of a carrier according to an embodiment of the present disclosure being fixed to a vehicle seat via a connecting and fixing device. FIGFigure 23 is a perspective view of a connection and fastening device according to an embodiment of the present disclosure. Figure 24 is a perspective view of a carrier equipped with a connection and fastening device according to an embodiment of the present disclosure, with the carrier's bottom cover removed. Figure 25 is a schematic perspective view of a bottom support member equipped with a connection and fastening device according to an embodiment of the present disclosure. Figures 26A and 26B are partial perspective views of a second belt connection assembly of a connection and fastening device connected to a bottom support member, and schematic diagrams of a partial structure of the second belt connection assembly according to another embodiment of the present disclosure. Figures 27A to 27D are schematic diagrams of a partial structure of a first belt connection assembly according to the present disclosure. Figure 28 is a perspective view of a carrier according to an embodiment of the present disclosure secured to a vehicle seat. Figures 29 and 30 show bottom perspective views of a carrier according to an embodiment of the present disclosure in different usage positions. Figure 31A is a bottom view of the carrier shown in Figure 29. Figure 31B is a partial cross-sectional view of section A shown in Figure 31A. Figures 32A and 32B are bottom views of the carrier shown in Figure 30. Figure 32B is a partial cross-sectional view of section B shown in Figure 32A. Figure 33A shows a bottom view of a carrier according to an embodiment of the present disclosure in a stowed state. Figure 33B shows a partial cross-sectional view of portion C shown in Figure 33A. Figure 34 shows another bottom view of the carrier shown in Figure 33A. Figures 35 to 37 respectively show bottom stereoscopic views of a carrier according to another embodiment of the present disclosure in different usage states. Figure 38 shows a stereoscopic bottom view of the carrier shown in Figure 37 in a stowed state. Figure 39A shows a partial enlarged view of portion E shown in Figure 38. Figure 39B shows a partial cross-sectional view taken along line FF in Figure 39A. Figure 40 shows another stereoscopic bottom view of the carrier shown in Figure 38, with the bottom cover removed. Figure 41A shows another stereoscopic bottom view of the carrier according to another embodiment of the present disclosure, with the bottom cover removed. Figure 41B shows a partial cross-sectional view taken along line GG in Figure 41A. Description of the accompanying drawings: Carrier 2100 Body 2110 Window 2111 Bottom support member 2120 First storage slot 2121 Second storage slot 2122 Support foot 2123 Fixing column 21231 Fixing hole 21232 Anti-slip pad 21233 Reinforcement bracket 2124 First reinforcement rod 21241 Second reinforcement rod 21242 First section 21242a Second section 21242b Extension section 21242c Bracket storage slot 2125 First limiting structure 2126 First limiting rod 21261 First base 21262 First portion 21262a Second portion 21262b First mounting hole 21263 Second limiting structure 2127 Second limiting rod 21271Second seat 21272 First portion 21272a Second portion 21272b Second mounting hole 21273 Main body cover 2130 Bottom cover 2140 First storage cover 2141 Second storage cover 2142 Anti-collision structure 2200 Fixing belt assembly 2300 First belt assembly 2310 First belt 2311 Second belt 2312 First connecting end 2313 Second connecting end 2314 Length adjuster 2315 First connecting device 23131 Second belt assembly 2320 Third belt 2321 Third connecting end 2322 Fourth connecting end 2323 Second connecting device 23231 Vehicle seat 2600 Carrier 3100, 4100, 5100, 6100 Box body 3110 Side support 6111 First window 6116A, 6116B Bottom support 3120, 4120, 5120 First receiving slot 3121 Second receiving slot 3122 Support foot 3123, 4123 Reinforcement rod 3124, 5124 Bracket receiving slot 3125 Fixed belt limiting structure 3126, 4126, 5126 First tubular structure 31261, 41261, 51261 Second tubular structure 31262, 41261, 51262 First end 51262a Second end 51262b Protruding rib 41263 Penetrating gap 31264, 41264 Fastener 3128, 4128 Body cover 3130 Bottom cover 3140 First receiving cover 3141 Second receiving cover 3142 Fixed belt assembly 3300, 4300, 5300 First belt assembly 3310, 4310 First strap 3311 Second strap 3312, 5312 First connection end 3313 Second connection end 3314 Length adjuster 3315 First connecting device 33131 Second strap assembly 3320 Third strap 3321, 4321, 5321 Second connection end 3322 Fourth connection end 3323 Second connecting device 33231 Vehicle seat 3600, 5600 Vehicle M100 Box body M110 Bottom support member M120 Reinforcement rod M124 Belt limiting structure M126 Connecting and fixing device M300 First strap connecting assembly M301 First strap structure M310 First strap body M311 First end M312 Second end M313 First length adjuster M314 Second strap structure M320 Second strap body M321 First end M322 Second end M323 Second length adjuster M324 Second belt connection assembly M302 Third belt body M331 First end M332Second end M333 Buffer strip M334 First stitching point MX1 Second stitching point MX2 Knotting points MCI, MC2 Carrier N1 Box body N100 Body cover N101 Bottom cover N102 Storage lid N1021 Box body N110 Bottom support N120 Component storage slot N121 Fixing strap storage slot N122

[0002] TSOFTX connecting assembly N200 Clamping part N210 Connecting part N220 Sliding part N221 Wear-resistant part N2210 Synchronizing part N222 Connecting part N223 Mounting part N230 First locking part N231 Second locking part N232 Third locking part N233 Locking device N240 Release operating part N241 Locking part N242 Reset part N243 Mounting seat N244 Upper cover N2441 Lower cover N2442 Reinforcement bracket N300 First reinforcing rod N310 Second reinforcing rod N320 Extension section N321 Belt fixing structure N330 Fixing seat N331 Fixing pin N332 Limiting part N340 Fixing belt assembly N500 First connecting end N501 Second connecting end N502 First belt N510 Second belt N520 Degree adjuster N530 Vehicle seat N600 Carrier N1A Box N100A Body cover N101A Bottom cover N102A Storage lid N1021 A Box body N110A Bottom support N120A Component storage slot N121A Fixing belt storage slot N122A Support foot N123A

[0003] 1S0F1X connection kit N200A

[0004] K ■ Joint N210A Connecting portion N220A Sliding member N221A Synchronizing member N222A Connecting member N223A Mounting portion N230A Locking device N400A Connecting seat N410A Upper surface N411A Mounting hole N412A Locking member N420A Fixing strap assembly N500A First connecting end N501A Second connecting end N502A First strap N510A Second strap N520A Length adjuster N530A DETAILED DESCRIPTION To facilitate understanding of the present disclosure, the present disclosure will be described more fully below with reference to the accompanying drawings. Preferred embodiments of the present disclosure are shown in the drawings. However, the present disclosure may be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present disclosure. Below, a first set of embodiments for securing a carrier to a vehicle seat will be described. Referring to FIG. 1 , a first embodiment of the present disclosure provides a carrier 2100 and a securing strap assembly 2300 for the carrier 2100. The carrier 2100 can be secured to a vehicle seat 2600 via the securing strap assembly 2300. As shown in FIG. 1 , the securing strap assembly 2300 of this embodiment is configured to be connected to the carrier 2100. Optionally, the securing strap assembly 2300 is at least partially fixedly connected (e.g., detachably or non-detachably) to the carrier 2100. At least a portion of the securing strap assembly 2300 can be stored in a storage space within the carrier 2100. The location and structure of the storage space will be described in detail below with reference to FIG. Specifically, the carrier 2100 includes a case body 2110 and a bottom support member 2120. The bottom support member 2120 is detachably connected to the case body 2110 to form a case body with the case body 2110, providing space for accommodating pets or children. The exterior of the box is covered with a cover, which can be made of at least one of fabric, plastic, or polyethylene (PE), although this disclosure is not limited thereto. Specifically, the cover can include a body cover 2130 that wraps around the exterior of the box body 2110, and a bottom cover 2140 that wraps around the exterior of the bottom support member 2120. The body cover 2130 and the bottom cover 2140 can be detachably connected, for example, via a zipper, Velcro, or hook-and-loop assembly, although this disclosure is not limited thereto. Furthermore, as shown in FIG1 , the carrier 2100 can also be provided with an anti-collision structure 2200 to reduce impacts to the carrier 2100. The anti-collision structure 220 can be fixedly attached to the exterior of the body cover 2130, for example, by sewing or gluing.Specifically, the anti-collision structure 2200 is disposed at least on the side of the vehicle 2100 proximal to the vehicle door when the vehicle 2100 is placed on the vehicle seat 2600. FIG. 2 shows another perspective view of the vehicle 2100 and the strap assembly 2300 shown in FIG. 1 , with the bottom cover 2140 removed to more clearly illustrate the structure of the bottom support 2120. FIG. 3 and FIG. 4 respectively show perspective views of the strap assembly 2300 and the vehicle 2100 shown in FIG. 2 . As shown in FIG. 2 , the strap assembly 2300 of this embodiment can be connected to the vehicle 2100, for example, fixedly connected. More specifically, the strap assembly 2300 can be removably or non-removably secured to the vehicle 2100, such that a portion of the strap assembly 2300 remains connected to the vehicle 2100, eliminating the need for repeated installation and removal of the strap assembly 2300. For example, when the carrier 2100 and the securing strap assembly 2300 are in use, the securing strap assembly 2300 extends from the side of the carrier 2100 away from the vehicle seat back, across the bottom side of the bottom support member 2120, and connects at different locations on the vehicle seat, thereby stably and securely securing the carrier 2100 to the vehicle seat. As shown in FIG3 , the securing strap assembly 2300 may include a first strap assembly 2310 and two second strap assemblies 2320. The first strap assembly 2310 includes a first strap 2311, a second strap 2312, a first connecting end 2313, and a second connecting end 2314. The first strap 2311 and the second strap 2312 may be collectively referred to as the "first strap body." One end of the first strap 2311 constitutes the first connecting end 2313 of the first strap assembly 2310, and a first connecting device 23131 is provided at the first connecting end 2313. In one example, the first connecting device 23131 may be a top tether connector, connected to the vehicle seat backrest or other relevant connection location above the vehicle seat. The other end of the first strap 2311 may be connected to one end of the second strap 2312. The other end of the second strap 2312 constitutes the second connection end 2314 of the first strap assembly 2310 and is connected to the second strap assembly 2320. In one example, a length adjuster 2315 may be provided between the first strap 2311 and the second strap 2312 to adjust the overall length of the first strap assembly 2310. The length adjuster 2315 may be configured to adjust the length of the first strap 2311, the second strap 2312, or both, although this disclosure is not limited in this regard.In one example, the second strap 2312 can be composed of two straps, each connected at one end to the other and each connected at the other end to a second strap assembly 2320. In another example, the second strap 2312 can be composed of a single strap that passes through the angle adjuster 2315 and has a second connecting end 2314 at each end. Each second strap assembly 2320 includes a second strap 2321 (also referred to as a "second strap"), a second connecting end 2322, and a fourth connecting end 2323. The third strap 2321 is positioned between the third connecting end 2322 and the fourth connecting end 2323. The second connecting end 2322 of the second strap assembly 2320 is connected to the second connecting end 2314 of the first strap assembly 2310. The fourth connecting end 2323 of the second strap assembly 2320 is provided with a second connecting device 23231. In one example, the second connecting device 23231 can be a LATCH connector that cooperates with a corresponding connecting structure provided on a vehicle seat to secure the carrier 2100 to the vehicle seat. 1, 2, and 3, at least a portion of the first strap assembly 2310 (e.g., the second strap 2312) is looped from the side of the carrier 2100 away from the backrest of the vehicle seat 2600 to the bottom of the carrier 2100, and the first connecting device 23131 is connected to the top of the vehicle seat 2600. The second strap assembly 2320 is disposed at the bottom of the carrier 2100. One end of the second strap assembly 2320 (i.e., the third connecting end 2322) is connected to one end of the first strap assembly 2310 (i.e., the second connecting end 2314), and the other end of the second strap assembly 2320 is provided with a second connecting device 2323L. The second connecting device 23231 is connected to the vehicle seat 2600 to secure the carrier 2100 to the vehicle seat 2600. Optionally, the first strap assembly 2310 The second strap assembly 2312 and the second strap assembly 2320 are fixedly connected to each other, that is, the second strap 2312 and the third strap 2321 are fixedly connected. Furthermore, the second strap 2312 of the first strap assembly 2310 and the second strap 2321 of the second strap assembly 2320 are integrally formed, that is, the second connecting end 2322 and the second connecting end 2314 are the same endpoint. As shown in Figure 2, the storage space for the fixing strap assembly 2300 is located on the bottom support member 2120.Specifically, the storage space includes a first receiving slot 2121 and a second receiving slot 2122 disposed within the bottom support member 2120. The first receiving slot 2121 is configured to receive the second connector 23231 and, optionally, at least a portion of the second strap assembly 2320, while the second receiving slot 2122 is configured to receive the first connector 23131 and, optionally, at least a portion of the first strap assembly 2310. In one example, the first receiving slot 2121 and the second receiving slot 2122 are disposed on opposite sides of the bottom support member 2120 along the transverse direction D4 (i.e., the width thereof). For example, the first receiving slot 2121 is disposed on the side where the second connector 23231 (e.g., a LATCH connector) extends from the vehicle seat 2100, i.e., the side closer to the vehicle seat backrest in this embodiment, for receiving the second connector 23231 and at least a portion of the second strap 2321. In this embodiment, two first receiving slots 2121 may be provided, each for receiving one second connecting device 23231. Optionally, the two first receiving slots 2121 may be symmetrically arranged relative to the center of one side of the bottom support member 2120. Furthermore, the two first receiving slots 2121 may be located in the middle of the side. In other examples, only one receiving slot 2121 may be provided, for example, located in the middle of one side of the bottom support member 2120, for receiving two second connecting devices 23231. A second receiving slot 2322 may be provided on the opposite side of the first receiving slot 2121, i.e., on the side away from the vehicle seat backrest, for receiving the first strap 2311, at least a portion of the second strap 2312, and the first connecting device 23131 of the first strap assembly 2310. Alternatively, the second receiving groove 2122 can be centrally located on one side of the bottom support member 2120 (i.e., in the middle of the side). In one example, the first receiving groove 2121 and the second receiving groove 2122 can be recessed structures and configured to be located at the bottom of the bottom support member 2120, specifically near the edge of the bottom of the bottom support member 2120. As shown in FIG2 , when at least a portion of the second strap assembly 2320 and the first strap assembly 2310 are respectively stored in the first receiving groove 2121 and the second receiving groove 2122, the recessed structure prevents the stored fixing strap assembly 2300 from protruding from the bottom support member 2120, thereby preventing the bottom of the carrier 2100 from contacting a support surface (e.g., the vehicle seat 2600, the vehicle floor, or the ground).2 and 4 , the bottom support member 2120 is further provided with a securing strap retaining structure for limiting the displacement of the securing strap assembly 2300 (i.e., positioning the securing strap assembly 2300). This ensures that the securing strap assembly 2300 is at least partially fixedly connected to the carrier 2100 and prevents it from accidentally detaching or becoming scattered. Furthermore, when removing the securing strap assembly 2300, the carrier 2100 can be quickly and easily secured. As shown in FIG4 , the securing strap retaining structure includes a first retaining structure 2126 and a second retaining structure 2127. The first retaining structure 2126 is configured to retain the second strap assembly 2320, preventing it from accidentally detaching from the bottom support member 2120. Optionally, the first retaining structure 2126 may be provided. The fourth connection end 2323 of the first strap assembly 2320 is disposed near the side of the bottom support member 2120 that is close to the vehicle seat backrest, that is, near the side where the second connection device 23231 extends out of the vehicle 2100. This avoids a situation where the second connection device 23231 may swing too much due to the limiting structure being far from the fourth connection end 2323 of the fixed strap assembly 2300, which would make storage difficult and may cause unnecessary collisions or damage. Optionally, the first limiting structure 2126 can be provided near the first receiving slot 2121 to facilitate storage and removal of the second connecting device 23231. Only the third strap 2321 near the second connecting device 23231 needs to be stored, which helps save storage space and facilitates operation. The number of first limiting structures 2126 can be proportional to the number of second straps 2321 (or their fourth connecting ends 2323). For example, in this embodiment, two first limiting structures 2126 can be provided, each corresponding to one of the second connecting devices 23231 and the third strap 2321 connected thereto, to limit their position. In one example, as shown in FIG. 2 , the first limiting structures 2126 can be provided on both sides of the first receiving slot 2121, i.e., the first receiving slot 2121 is located between the two first limiting structures 2126. This facilitates storage of the second connecting device 23231 and prevents interference. However, the present disclosure is not limited to this. In other embodiments, Alternatively, a single first limiting structure 2126 may be provided to simultaneously limit the position of both second straps 2321, or multiple first limiting structures 2126 may be provided to limit the position of each second strap 2321 at multiple points. In this embodiment, a second limiting structure 2127 is configured to limit the position of the first strap assembly 2310 to prevent the second strap assembly 2310 from swinging relative to the carrier 2100 and slipping off the outside of the carrier 2100. Optionally, the second limiting structure 2127 may be positioned near the connection point between the first strap assembly 2310 and the second strap assembly 2320, or near the second connection end 2314, i.e., the side of the bottom support member 2120 facing away from the vehicle seat backrest. Because the second connection end 2314 of the first strap assembly 2310 and the third connection end 2322 of the second strap assembly 2320 are fixedly connected to each other, the second limiting structure 2127 can further limit the position of the first strap assembly 2310. To further ensure the stability and firmness of the fixing belt assembly 2300.Optionally, as shown in FIG2 , two second limiting structures 2127 may be provided. These two second limiting structures 2127 may be provided on either side of the first receiving slot 2122 to facilitate storage of the first strap assembly 2310 and the first connecting device 23131, while avoiding interference and facilitating storage. The number of second limiting structures 2127 may be proportional to the number of third straps 2321 (or their fourth connecting ends 2323) and / or second straps 2312 (or their second connecting ends 2314), but the present disclosure is not limited thereto. In other embodiments, a single second limiting structure 2127 may be provided to simultaneously limit the position of both third straps 2321 and second strap 2314. Alternatively, multiple second limiting structures 2127 may be provided to limit the position of each second strap 2321 and second strap 2314 at multiple points. As shown in FIG2 , when the securing strap assembly 2300 of the carrier 2100 is in use, the ends of the two second strap assemblies 2320 are restrained by the first and second restraining structures 2126 and 2127, respectively, and maintained in an extended position on the bottom side of the bottom support member 2120. The two second connecting ends 2314 of the first strap assembly 2310 are restrained by the second restraining structures 2127, preventing the first strap assembly 2310 from shifting or detaching. When the carrier 2100 is not in use or when the securing strap assembly 2300 is no longer needed to secure the carrier 2100 to a vehicle seat, the second connecting device 23231 can be separated from the vehicle seat and stored in the first storage slot 2121. The upper first connecting device 23131 can be removed from the vehicle seat or its associated connection location and stored in the second storage cover 2122 along with the first and second straps 2311 and 2312 of the first strap assembly 2310. With further reference to Figures 4 and 5A-5C, a reinforcement bracket 2124 is also provided on the bottom support member 2120 to enhance the structural stability of the bottom support member 2120 and the carrier 2100. The specific structure of the reinforcement bracket 2124 will be described below in conjunction with Figure 6. The reinforcement bracket 2124 can be disposed on the bottom side of the bottom support member 2120, for example, within a bracket receiving groove 2125 recessed from the bottom side of the bottom support member 2120. Optionally, the bracket receiving groove 2125 is disposed between the first receiving groove 2121 and the second receiving groove 2122 and has a shape adapted to the reinforcement bracket 2124 to prevent interference between the reinforcement bracket 2124 and other components of the carrier 2100.In addition, referring to Figures 5A and 5B, Figure 5A is a top perspective view of the bottom support member 2120, and Figure 5B is a bottom perspective view of the bottom support member 2120. Two support legs 2123 may also be provided on the bottom side of the bottom support member 2120. The two support legs 2123 are disposed on either side of the bottom support member 2120 along the longitudinal axis D3. In one example, each support leg 2123 may be a long, plate-like member with a fixing post 21231 at each end, which connects to a fixing hole 21232 provided at a corresponding position on the bottom support member 2120. For example, a fastener such as a screw is sequentially inserted through the fixing hole 21232 and the fixing post 21231 to securely connect the two together. However, the present disclosure is not limited to this. The support legs 2123 may also be secured to the bottom support member 2120 by adhesive bonding or other means. Furthermore, the support foot 2123 may be provided with an anti-slip pad 21233 to increase the friction between the carrier 2100 and the vehicle seat. For example, the anti-slip pad 21233 may be provided at the fastener connecting the fixing hole 21232 and the fixing column 21231 to prevent the fastener from accidentally scratching the vehicle seat. As shown in Figures 4 and 6, the reinforcement bracket 2124 includes a first reinforcement rod 21241 and a second reinforcement rod 21242. The first reinforcement rod 21241 extends along the longitudinal axis D3 of the bottom support member 2120. In one example, two first reinforcement rods 21241 are provided, arranged substantially parallel to each other. The second reinforcement rod 21242 is configured to be arranged at an angle to the first reinforcement rod 21241. In one example, the second reinforcement rod 21242 may be connected between the two first reinforcement rods 21241 and spaced apart from each other, and each may be angled relative to the first reinforcement rods 21241. The second reinforcing rod 21242 can extend along the transverse axis D4 of the bottom support member 2120. In another example, two first reinforcing rods 21241 and two second reinforcing rods 21242 are provided. The two first reinforcing rods 21241 are arranged substantially parallel to each other, and the two second reinforcing rods 21242 are respectively disposed between the two first reinforcing rods 21241 to form an annular structure with the two first reinforcing rods 21241, thereby increasing structural stability and improving overall structural strength. This structure enhances the stability of the first and second reinforcing rods 21241 and 21242, ensuring that both (or the entire reinforcing bracket 2124) remain within the storage space of the bottom support member 2120 and prevent them from sliding due to the sliding of the fixing strap assembly 2300.In this embodiment, as shown in FIG4 , one end of each of the two second reinforcing rods 21242 is connected to both ends of a first reinforcing rod 21241, while the other end of each of the two second reinforcing rods 21242 extends from the connection with the other first reinforcing rod 21241 (i.e., from the position connected to the first reinforcing rod 21241 near the other end). That is, the other end of the second reinforcing rod 21242 is not connected to the first reinforcing rod 21241 at its end, but an extension section 21242c is left at the end. In one example, as shown in FIG4 and FIG6 , the second reinforcing rod 21242 can have a non-linear structure, such as an arc-shaped curve, wherein the extension section 21242c can be bent to match the arc-shaped structure of the side surface (near the edge) of the bottom support member 2120, so that the second limiting structure 2127 provided on the extension section 21242c is closer to, or even abuts against, the side of the bottom support member 2120. This further stabilizes the overall structure of the bottom support member 2120 and the positioning of the fixing strap assembly. Furthermore, the sections of the second reinforcing rod 21242 near the bottom surface of the bottom support member 2120 (e.g., the first section 21242a and the second section 21242b) have a non-linear structure, such as the structure shown in FIG4 . Specifically, the first section 21242a of the second reinforcing rod 21242 extends generally in a straight line along the transverse direction D4, while the second section 21242b is slightly inclined relative to the transverse direction D4. For example, the second sections 21242b of the two second reinforcing rods 21242 are inclined toward each other. Alternatively, at least one of the first section 21242a and the second section 21242b of the second reinforcing rod 21242 may have a solely curved structure. For larger vehicles, as shown in Figure 2 , the ISOFIX interface is fixed in position. To increase the area around the vehicle where the first strap wraps, thereby enhancing the vehicle's stability, this non-linear structure allows the spacing between the two second retaining structures 2127 to be greater than the spacing between the two first retaining structures 2126, securing the vehicle more securely. This also allows the first retaining structures 2126 to be closer to the ISOFIX interface, distributing the force applied to the bottom support member 2120 and improving securing stability. For smaller vehicles, the spacing between the two first retaining structures 2126 can also be equal to the spacing between the two second retaining structures 2127, but this disclosure is not limited to this. With further reference to Figures 2, 4, and 7A-7C , the first retaining structure 2126, which serves to restrain the first strap assembly 2310, can be located at the junction of the first reinforcement bar 21241 and one end of the second reinforcement bar 21242.The second limiting structure 2127 is disposed at the end of the other end of the second reinforcing rod 21242 (ie, the extension section 21242 c ) so as to be closer to the edge of the bottom support member 2120 , thereby better limiting the fixing belt assembly 2300 . In one example, as shown in Figures 2, 4 and 7A, the first limiting structure 2126 may include a first limiting rod 21261 and a first seat 21262. The first seat 21262 is fixedly provided on the reinforcing bracket 2124, for example, fixedly provided on the first reinforcing rod 21241 and / or the second reinforcing rod 21242. The first limiting rod 21261 is provided on the first seat 21262 through a first fixing hole 21263 opened on the first seat 21262, and maintains a certain distance from the bottom surface of the first seat 21262, so that the fixing belt assembly 2300 (for example, the third belt 2321, see Figure 2) passes between the first seat 21262 and the first limiting rod 21261 to fix the fixing belt assembly 2300 to the bottom of the carrier. In one example, the first base 21262 includes a first portion 21262a and a second portion 21262b connected to each other. The first portion 21262a is connected to the first reinforcement bar 21241 and / or the second reinforcement bar 21242 and optionally fits over the first reinforcement bar 21241 and / or the second reinforcement bar 21242. The second portion 21262b has an opening on one side facing away from the first portion 21262a, more specifically, toward the ISOFIX interface, to allow the third strap to extend and connect with the ISOFIX interface. Optionally, the second portion 21262b may be provided with a first groove, with the first stopper 21261 disposed within the first groove, and an opening on the side of the first groove proximal to the ISOFIX interface, but the present disclosure is not limited thereto. The other side of the second portion 21262b is connected to the first portion 21262a. Specifically, the first fixing hole 21263 is defined in the second portion 21262b, for example, on a sidewall of the second portion 21262b, so that the first limiting rod 21261 is connected to the second portion 21262b of the first base 21262. In other examples, the first portion 21262a and the second portion 21262b may be an integrated structure.In one example, as shown in Figures 2, 4, 7B, and 7C, the second base 21272 is fixedly mounted on the reinforcing bracket 2124, for example, at the other end of the second reinforcing rod 21242 (i.e., the end without the second base 21272), specifically at the distal end of the other end, i.e., the extension 21242C. Optionally, the second base 21272 is positioned near a side edge of the bottom support member 2120. The second limiting rod 21271 is positioned on the second base 21272 through a second mounting hole 21273 defined in the first base 21272 and maintains a certain distance from the bottom surface of the second base 21272, allowing the fixing strap assembly 2300 (e.g., the second strap 2321 and / or the second strap 2312, see Figure 2) to pass between the second base 21272 and the second limiting rod 21271, thereby securing the fixing strap assembly 2300 to the bottom of the vehicle. In one example, the second base 21272 can be a box-shaped structure. A second limiting rod 21271 is disposed within the box-shaped structure (i.e., the accommodating space) of the second base 21272, allowing the securing strap assembly (the second strap and / or the third strap) to pass between the second limiting rod 21271 and the inner surface of the second base 21272. One side of the upper end of the second base 21272 can have a single inclined surface 21272a extending outward from the accommodating space of the box-shaped structure, allowing the second strap and / or the third strap to extend outward from the accommodating space and wrap around the outside of the carrier. Optionally, the other side of the upper end of the second base 21272 can be provided with an outwardly extending edge 21272b for a more secure attachment to the bottom support member 2120. The present disclosure is not limited to the above structure; in other examples, the second base 21272 can also be configured as a protruding structure, etc. Furthermore, in other embodiments, the first limiting structure 2126 and the second limiting structure 2127 can be directly provided on the bottom support member 2120±, that is, the bottom support member 2120± may not be provided with the reinforcing bracket 2124 and the bracket receiving groove 2125. Furthermore, the bottom of the bottom support member 2120 may be provided with a plurality of recessed and ribbed structures, or a honeycomb structure, to increase the strength of the fixing strap limiting structure or the bottom support member 2120, optimize the force distribution at the bottom of the bottom support member 2120, and facilitate the lightweight design of the bottom support member 2120. Figures 8 and 9 respectively illustrate perspective views of the carrier 2100 shown in Figure 1 in different states. Specifically, Figure 8 illustrates the fixing strap assembly in use, while Figure 9 illustrates the fixing strap assembly in a stored state (i.e., stored).In this embodiment, the bottom cover 2140 may be provided with an openable and closable storage cover corresponding to the storage space for accommodating the strap assembly (i.e., the first and second storage slots 2121, 2122 shown in FIG. 2 ). Referring to FIG. 8 and FIG. 9 , the storage cover may include a first storage cover 2141 and a second storage cover 2142. The first storage cover 2141 is configured to shield the storage space for, for example, a LATCH assembly (such as the second connecting device 23231 shown in the figures), namely, shielding the first storage slot 2121. Specifically, the first storage slot 2121 may be provided corresponding to the first storage cover 2141 to facilitate removal or retrieval of the second connecting device 23231. Specifically, the second storage slot 2122 may be provided corresponding to the second storage cover 2142 to facilitate removal or retrieval of the first strap assembly 2310. In one example, the first storage cover 2141 can be disposed on a side of the vehicle 2100 along the transverse axis D4, for example, near the backrest of the vehicle seat 2600. Alternatively, as shown in FIG9 , two first storage covers 2141 can be provided, each corresponding to a first storage slot 2121. Alternatively, a single first storage cover can be provided to cover both first storage slots 2121 (see the structure shown in FIG11 ). The second storage cover 2142 is configured to obstruct the storage space for, for example, a top tether assembly (see FIG. 8 , which illustrates a portion of the first strap assembly 2310), that is, to obstruct the second storage slot 2122. In one example, the second storage cover 2142 may be disposed on the other side of the carrier 2100 along the transverse axis D4, such as a side away from the backrest of the vehicle seat 2600. The first storage cover 2141 and the second storage cover 2142 may both be at least partially detachably or separably connected to other portions of the bottom cover W 2140, for example, by means of a zipper structure, Velcro, concealed buckle, magnetic buckle, elastic loop, or the like. In one example, the bottom cover 2140, the first storage cover 2141, and the second storage cover 2142 may each comprise at least one of fabric, plastic, and polyethylene. For example, the bottom cover 2140 and the first storage cover 2141 and the second storage cover 2142 disposed thereon may be an integral structure. It is generally made of cloth, and a PE plate is fixedly arranged (such as sewn) in the cloth to form a relatively hard structure on a part thereof, thereby preventing the cloth from being too soft and easily collapsing.More specifically, the first storage cover 2141 and / or the second storage cover 2142 can be secured with a PE sheet to form a rigid cover structure, making it easy to open and close. Optionally, the first storage cover 2141 and / or the second storage cover 2142 can have an openable or closable opening to allow a portion of the first strap assembly and / or the second strap assembly to extend, thereby securing the carrier to the vehicle seat. In one example, the first storage cover 2141 and / or the second storage cover 2142 can be integrally formed with the bottom support member 2140. The opening can be detachably connected to the bottom cover 2140M via a zipper, Velcro, concealed snaps, magnetic buckles, elastic loops, or the like, allowing the securing strap assembly 2300 to be stored in the first and / or second storage slots. The opening can be closed when the opening is closed. The following description of the storage method of the securing strap assembly 2300 will be combined with Figures 2, 8, and 9. Referring to Figures 2 and 8, when the carrier needs to be connected to a vehicle seat, the second strap assembly 2320 of the securing strap assembly 2300 is removed from the first receiving slot 2121, and the first strap assembly 2310 is removed from the second receiving slot 2122. The second connecting device 23231 then extends from the first receiving slot 2121 to connect to, for example, an ISOFIX interface on the vehicle seat. The first strap assembly 2310 is then looped from the outside of the carrier to the top of the carrier, where the first connecting device is connected to the top of the vehicle seat. When the carrier 2100 is not in use or the securing strap assembly 2300 is not required to secure the carrier 2100 to the vehicle seat, the second connecting device 23231 (see FIG. 2 ) can be separated from the vehicle seat and stored in the first storage slot 2121. The first connecting device 23131 located above it can be removed from the vehicle seat or its associated connection location on the vehicle and stored in the second storage cover 2122 along with the first strap 2311 and second strap 2312 of the first strap assembly 2310. The first and second storage covers 2141 and 2142 are then closed. The completed storage state is shown in FIG. 9 . It should be noted that in this embodiment, the securing strap assembly can be secured to the bottom support member 2120 via a securing strap retaining structure, but the present disclosure is not limited thereto. In other embodiments, the securing strap assembly can also be detachably connected to the securing strap retaining structure or other retaining structures provided on the bottom support member 2120.Referring to Figures 10 and 11 , a second embodiment of the present disclosure provides a carrier 3100 and a securing strap assembly 3300 for securing the carrier 3100 to a vehicle seat 3600. Specifically, Figure 10 shows a perspective view of the carrier 3100 secured to the vehicle seat 3600 (i.e., the carrier 3100 and securing strap assembly 3300 are in use), while Figure 11 shows the carrier 3100 and securing strap assembly 3300 in use, as viewed from the bottom of the carrier 3100. As shown in Figures 10 and 11 , similar to the aforementioned second embodiment, the securing strap assembly of this embodiment is configured to at least partially connect to the carrier 3100. The carrier 3100 may include a case body 3110 and a bottom support member 3120. The bottom support member 3120 is detachably connected to the case body 3110 to form a case body with the case body 3110, providing space for accommodating pets or children. The exterior of the box body 3110 may be covered with a body cover 3130, and the exterior of the bottom support member 3120 may be covered with a bottom cover 3140. The body cover 3130 and the bottom cover 3140 may each comprise at least one of fabric, plastic, or polyethylene, but the present disclosure is not limited thereto. Furthermore, the body cover 3130 and the bottom cover 3140 may be made of the same material or a combination of materials, or different materials or combinations of materials. In one example, the body cover 3130 and the bottom cover 3140 are detachably connected to each other, for example, via a zipper structure, Velcro, a hook-and-loop assembly, etc., but the present disclosure is not limited thereto. Furthermore, FIG12A shows another stereoscopic view of the carrier 3100 shown in FIG11 and the fixing strap assembly 3300 connected to the carrier 3100, wherein the bottom cover 3140 covering the carrier 3100 is removed. FIG12B shows a partial cross-sectional view taken along line HH in FIG12A, and FIG12C shows a partial cross-sectional view taken along line JJ in FIG12A, to illustrate the structure and connection method of the fixing strap limiting structure 3126, which will be described later. Similar to the aforementioned first embodiment, the fixing belt assembly 3300 of the second embodiment of this aspect can be connected to the carrier M 3100, and optionally, a portion of the fixing belt assembly 3300 can be fixedly connected to the carrier 3100 in a detachable or non-detachable manner, so that regardless of whether the fixing belt assembly 3300 is used or not, this portion of the fixing belt assembly 3300 can always remain connected to the carrier 3100, thereby eliminating the need to repeatedly install or remove the fixing belt assembly 3300, and also facilitating the unfolding of the fixing belt assembly 3300 to quickly fix the carrier 3100.Specifically, as shown in Figures 10 and 12A, the securing strap assembly 3300 of this embodiment has a structure similar to the securing strap assembly 2300 of the first embodiment. That is, the securing strap assembly 3300 may include a first strap assembly 3310 and a second strap assembly 3320. The first strap assembly 3310 includes a strap body formed by a first strap 3311 and a second strap 3312, as well as a first connecting end 3313 and a second connecting end 3314. The first end of the second strap 3311 constitutes the third connecting end 3313 of the first strap assembly 3310 and is provided with a first connecting device 33131, such as a top tether connector, for connecting to a top anchor point on a vehicle seat or a corresponding anchor point above the vehicle seat. The other end of the first strap 3311 can be connected to one end of the second strap 3312. The other end of the second strap 3312 constitutes the second connection end 3314 of the first strap assembly 3310 and is connected to the first strap assembly 3320 at the second connection end 3314. Furthermore, the fixing strap assembly 3300 in this embodiment may include two second strap assemblies 3320. Each second strap assembly 3320 may include a third connection end 3322, a fourth connection end 3323, and a second strap 3321 (i.e., a second strap body) located between the second and fourth connection ends 3322 and 3323. The third connection end 3322 of the second strap assembly 3320 is connected to the second connection end 3314 of the first strap assembly 3310, and the fourth connection end 3323 is provided with a first connecting device 33231, such as a LATCH connector, for engaging with a corresponding connecting structure provided on the vehicle seat 3600. Optionally, the first belt assembly 3310 and the second belt assembly 3320 are fixedly connected to each other, i.e., the second connecting end 3322 is fixedly connected to the second connecting end 3314. Alternatively, the second belt 3312 of the first belt assembly 3310 and the second belt 3321 of the second belt assembly 3320 are integrally formed, i.e., the second connecting end 3322 and the second connecting end 3314 are the same endpoint. Furthermore, the specific structure and components of the first belt assembly 3310 in this embodiment may be similar to those of the first belt assembly 2310 in the first embodiment, for example, only the length adjuster and the specific structure similar to that of the second belt 2312. For details, please refer to FIG. 3 and its related content, and will not be further described here. Similarly, the second belt assembly 3320 in this embodiment may also have a similar structure to the second belt assembly 2320 in the first embodiment, for details, please refer to FIG. 3 and its related content, and will not be further described here.10 to 12A , when the carrier 3100 and the securing strap assembly 3300 are in use, the securing strap assembly 3300 extends from a side of the carrier 3100 away from the backrest of the vehicle seat 3600, passes through the bottom side of the bottom support member 3120, and has its ends connected to different positions of the vehicle seat 3600, so as to stably and securely secure the carrier 3100 to the vehicle seat 3600. More specifically, as shown in FIG10 , the first connecting end 3313 of the first strap assembly 3310 can be connected to the top of the vehicle seat 3600 or a corresponding anchor point provided above the vehicle seat 3600 via a first connecting device 33131, and at least a portion of the first strap assembly 3310 (e.g., the second strap 3312 and optionally a portion of the first strap 3311) is routed from the side of the carrier 3100 away from the backrest of the vehicle seat 3600 to or near the bottom of the carrier 3100. 10 and 12A , the second connection end 3314 of the first belt assembly 3310 is connected to the second connection end 3322 of the first belt assembly 3320 or forms a body (i.e., the same endpoints) with the third connection end 3322, and the fourth connection end 3323 of the second belt assembly 3320 is connected to the vehicle seat 3600 from the bottom side of the bottom support member 3120 via a second connecting device 33231. In addition, a storage space for storing the fixing belt assembly 3300 may be provided on the bottom support member 3120. As shown in FIG12A , the storage space includes a first storage slot 3121 and a second storage slot 3122. The first storage slot 3121 is configured to accommodate the second connecting device 33231 and, optionally, at least a portion of the second strap assembly 3320, while the second storage slot 3122 is configured to accommodate the first connecting device 33131 and, optionally, at least a portion of the first strap assembly 3310. In one example, two first storage slots 3121 may be provided, each for accommodating a second connecting device 33231. In another example, only one storage slot may be provided to accommodate both second connecting devices 33231. It should be noted that the specific structure and position of the first receiving groove 3121 and the second receiving groove 3122 can be similar to those of the first embodiment described above, for example, they have a recessed structure and are respectively arranged on opposite sides of the bottom support member 3120, etc. For details, please refer to the first receiving groove 2121 and the second receiving groove 2122 shown in Figure 2 and the related description, which will not be repeated here.Furthermore, as shown in Figures 11 and 12A, the carrier 3100 can also be equipped with openable and closable storage covers (a first storage cover 3141 and / or a second storage cover 3142) to shield and enclose the storage space. The storage covers can be provided corresponding to the storage space (i.e., the first storage slot 3121 and the second storage slot 3122). In one example, the storage covers can include a first storage cover 3141 for shielding the first storage slot 3121 and a second storage cover 3142 for shielding the second storage slot 3122. Specifically, the first storage cover 3141 can be provided corresponding to the first storage slot 3121 to prevent interference with the first storage cover 3141 when the second connecting device 33231 is removed from or returned to the first storage slot 3121. Similarly, the first storage cover 3142 can be provided corresponding to the second storage slot 3122 to prevent interference with the second storage cover 3142 when the first strap assembly 3310 is removed from or placed back into the second storage slot 3122. In this embodiment, a single first storage cover 3141 can be provided to simultaneously cover both first storage slots 3121. However, the present disclosure is not limited thereto. Two first storage covers can also be provided, each corresponding to one of the first storage slots 3121. Optionally, the first storage cover 3141 and / or the first storage cover 3142 can have an openable or closable opening that can be opened toward the exterior of the case 3100. When opened, the opening allows a portion of the first strap assembly 3310 and / or the second strap assembly 3320 (e.g., the first connecting device 33231 provided at the fourth connecting end 3323) to extend, thereby securing the carrier to the vehicle seat. In one example, the opening can be removably connected to the storage cover and / or bottom cover 3140 via a zipper structure, hook and loop fasteners, concealed snaps, magnetic buckles, elastic loops, etc., to store the strap assembly 3300 within the first and / or second storage slots and achieve an aesthetically pleasing appearance when the opening is closed. In one example, at least a portion of the first storage cover 3141 and / or the second storage cover 3142 can be removably or detachably connected to the bottom cover 3140, or as part of the bottom cover 3140, can be removably connected to other portions of the bottom cover 3140. This removable or detachable connection can be achieved via a zipper structure, hook and loop fasteners, concealed snaps, magnetic buckles, elastic loops, etc., but the present disclosure is not limited thereto. It is understood that the first storage cover 3141 and / or the second storage cover 3142 can have a similar structure, material, and placement as those in the first embodiment, and further description is omitted.Referring to Figures 13 and 14, Figure 13 shows a perspective view of the carrier 3100 of this embodiment in a stowed state, i.e., showing the strap assembly 3300 stowed. Figure 14 shows the carrier 3100 of Figure 13 after the bottom cover 3140 has been removed, showing the strap assembly 3300 stowed in the bottom support member 3120. The stowage method of the strap assembly 3300 of this embodiment will be described below with reference to Figures 11, 12A, 13, and 14. Specifically, Figures 11 and 12A show the strap assembly 3300 in use. To secure the carrier 3100 to a vehicle seat using the strap assembly 3300, the first stowage cover 3141 can be opened and the second connecting device 33231 can be removed from the first stowage slot 3121, at least partially emerging from the case 3100. For example, the second connecting device 33231 can be positioned approximately perpendicular to the edge of the bottom support member 3120 proximal to the vehicle seat and extend beyond (i.e., extend outward from) the edge of the bottom support member 3120 to facilitate connection with, for example, a TSOFTX interface provided on the vehicle seat. Alternatively, the second storage cover 3142 can be opened and the first strap assembly 3310 removed from the second storage slot 3122, allowing the first strap assembly 3310 to be looped from the carrier (e.g., the case body 3110) away from the outside of the vehicle seat backrest to the top of the carrier. The first connecting device 33131 provided at the first connecting end 3313 can then be connected to a corresponding anchor point on or above the top of the vehicle seat. 13 and 14 , the carrier 3100 and the securing strap assembly 3300 are shown in a stowed state. When the carrier 3100 is not in use, or when the securing strap assembly 3300 is not required to secure the carrier 3100 to a vehicle seat, the second connecting device 33231 can be separated from the vehicle seat and stored in the first storage slot 3121. The upper first connecting device 33131 can be removed from the vehicle seat or its associated connection location and stored in the second storage slot 3122 along with the first strap assembly 3310. The first storage cover 3141 and the second storage cover 3142 can then be closed to stow the securing strap assembly 3300. The stowed state of the carrier 3100 is shown in FIG13 . Furthermore, as shown in FIG12A , a reinforcing bracket is provided on the bottom support member 3120 to enhance the structural stability of the bottom support member 3120 and the carrier 3100. The reinforcing bracket is disposed on the bottom side of the bottom support member 3120, for example, in a bracket receiving groove 3125 recessed from the bottom side of the bottom support member 3120.Optionally, the bracket receiving slot 3125 is disposed between the first receiving slot 3121 and the second receiving slot 3122. Unlike the first embodiment described above, as shown in FIG12A , the reinforcing bracket of this embodiment can be a reinforcing rod 3124, disposed at the center of the bottom support member 3120 along its transverse axis D6. Specifically, the reinforcing rod 3124 is fixedly disposed at the center of the bottom side of the bottom support member 3120 along the transverse axis D6 (i.e., approximately at the centerline of the bottom support member 3120 along the transverse axis D6) and extends along the longitudinal axis D5. However, the reinforcing rod 3124 of this embodiment is not limited to this location. For example, it can also be disposed at a position offset a certain distance from the centerline of the bottom support member 3120 along the transverse axis D6, but without interfering with the first receiving slot 3121 and the second receiving slot 3122. By disposing a reinforcing rod 3124 in the middle of the bottom support member 3120, the structure of the bottom support member 3120 can be further simplified, enhancing its structural stability while reducing its weight. In one example, the bottom support member 3120 can be provided with two support legs 3123, located at either end of the bottom support member 3120 along the longitudinal direction D5, for example, near the edge of the bottom support member 3120. Optionally, the two support legs 3123 are symmetrically disposed about the centerline of the bottom support member 3120 along the longitudinal direction D5. Each support leg 3123 can be an elongated, plate-like member, fixedly connected to the bottom support member 3120 via fasteners or adhesive, and extends generally along the transverse direction D6 of the bottom support member 3120. Optionally, the support legs 3123 can have a curvature to conform to the shape of the edge of the bottom support member 3120. In this example, the ends of the reinforcing rod 3124 can extend to the two support feet 3123, for example, inserted beneath the support feet 3123, so that the ends are respectively trapped between each support foot 3123 and the bottom support member 3120, thereby limiting the position of the reinforcing rod 3124. Referring to Figures 12A to 12C, in this embodiment, the bottom support member 3120 can also be provided with a fixing strap retaining structure 3126 for retaining the fixing strap assembly 3300. Thus, when the fixing strap assembly 3300 is used to secure the carrier 3100, the fixing strap retaining structure 3126 can confine the fixing strap assembly 3300 within a certain range and prevent it from slipping off the side of the carrier 3100.At the same time, when the fixing strap assembly 3300 is not in use, the fixing strap limiting structure 3126 can limit at least a portion of the fixing strap assembly 3300 to the carrier 3100 (i.e., maintain connection with the carrier 3100), preventing it from being scattered around the box and facilitating removal and quick securing of the carrier 3100. In one example, two fixing strap limiting structures 3126 are provided, disposed on the reinforcing rod 3124, to respectively limit the position of one of the third straps 3321 of the fixing strap assembly 3300. Specifically, the two fixing strap limiting structures 3126 can be fixedly disposed at or near both ends of the reinforcing rod 3124. For example, the fixing strap limiting structures 3126 can be disposed near the support foot 3123 and located on the inner side of the support foot 3123. It should be noted that the "inner side" here refers to the direction from the edge of the bottom support member 3120 toward its center. As shown in FIG. 12B , The fixed-belt retaining structure 3126 can be secured to the bottom support member 3120 via fasteners 3128. Specifically, in this embodiment, the fasteners 3128 can sequentially pass through the bottom support member 3120, the reinforcement rod 3124, and the fixed-belt retaining structure 3126, thereby simultaneously securing the reinforcement rod 3124 and the fixed-belt retaining structure 3126 to the bottom support member 3120. Referring to Figures 12A to 12C, a gap 31264 is provided between the fixed-belt retaining structure 3126 and the reinforcement rod 3126 to allow the fixed-belt assembly (e.g., the second strap 3321) to pass through. In one example, the fixed-belt retaining structure 3126 can include a first tubular structure 31261 that is sleeved and secured to the reinforcement rod 3124. Specifically, the reinforcement rod 3124 is confined between the two sidewalls of the first tubular structure 31261. For example, Both ends of the first tubular structure 31261 may be connected to the reinforcing rod 3124 via fasteners 3128 and fixed together to the bottom support member 3120. Specifically, the first tubular structure 31261 may be disposed along the longitudinal axis direction D5.In this example, a slit is provided on the side wall of the first tubular structure 31261, which passes through the side wall along the transverse axis D6, and the slits on the two side walls of the first tubular structure 31261 are connected to each other to form a penetration gap 31264 for the third belt 3321 of the fixing belt assembly to pass through, wherein the slit can be provided close to the upper wall of the first tubular structure 31261, so that the third belt 3321 passes through the slit on one side wall of the first tubular structure 31261, and extends between the inner surface of the upper wall of the first tubular structure 31261 and the outer surface of the upper side of the reinforcing rod 3124, and then leaves the penetration gap 31264 through the slit on the other side wall of the first tubular structure 31261, thereby limiting the fixing belt assembly in the longitudinal axis direction D5 to prevent the fixing belt assembly from accidentally detaching. It should be understood that the aforementioned "upper wall" and "side walls" are portions of the circumferential wall of the first tubular structure 31261. That is, the circumferential wall of the first tubular structure 31261 includes an upper wall, two side walls, and a lower wall. Optionally, the fixing strap retaining structure 3126 may further include a second tubular structure 31262, which is disposed intersectingly with the first tubular structure 31261. For example, the second tubular structure 31262 may be disposed along the transverse direction D6 (optionally substantially perpendicular to the first tubular structure 31261) and connected to the first tubular structure 31261 at least via a gap 31264, thereby better retaining the fixing strap assembly. Specifically, the length of the second tubular structure 31262 extending in the transverse direction D6 (i.e., the length L3 of the second tubular structure 31262) is greater than the width of the first tubular structure 31261. Specifically, the third strap 3321 can extend within the second tubular structure 31262 (e.g., extending through the entire second tubular structure 31262) and through the through-gap 31264, thereby increasing the length of the third strap 3321 within the fixing strap retaining structure 3126, thereby enhancing the retaining effect on the fixing strap assembly in the transverse direction D6. In this example, the second tubular structure 31262 and the reinforcing rod 3124 are intersecting, and the through-gap 31264 is formed between the second tubular structure 31262 and the reinforcing rod 3124, for example, between the inner surface of the upper wall of the first tubular structure 31262 and the upper outer surface of the reinforcing rod 3124, but the present disclosure is not limited to this. Alternatively, the first tubular structure 31261 and the second tubular structure 31262 can be separate components that are assembled together.Optionally or alternatively, the second tubular structure 31261 and the second tubular structure 31262 are formed in the same manner, wherein the slit forming the through-gap 31264 is located on the sidewall of the first tubular structure 31261 within the second tubular structure 31262. For example, the slit extends along the curvature of the sidewall of the first tubular structure 31261 within the second tubular structure 31262. In other words, the sidewall of the first tubular structure 31261 within the second tubular structure 31262 forms a rib (e.g., "31263" shown in FIG. 12C ). In other words, the through-gap 31264 (formed by a slit) is located between the first tubular structure 31261 and the second tubular structure 31262, that is, between the side wall of the first tubular structure 31261 (i.e., the rib 31263) within the second tubular structure 31262 and the inner surface of the upper wall of the second tubular structure 31262. Optionally, the vertical centerline of the first tubular structure 31261 and the vertical centerline of the second tubular structure 31262 are approximately at the same level, thereby minimizing the overall height or thickness of the securing strap limiting structure 3126, thereby preventing the carrier 3100 from shaking due to the uneven bottom of the bottom support member 3120 when placed on the vehicle seat. Of course, it is understandable that in other examples, only the second tubular structure 31262 for the fixing belt assembly (such as the second belt 3321) to extend through can be provided, and the second tubular structure 31262 can be fixed to the bottom support member 3120 by fasteners or bonding. In this example, the second tubular structure 31262 may be provided with at least one convex rib 31263 extending along the longitudinal direction D5, and the at least one convex rib 31263 may protrude inward from the upper wall and / or lower wall of the second tubular structure 31262 (i.e., extend along the vertical direction D7) to form a slit with the lower wall and / or upper wall of the second tubular structure 31262, that is, a penetration gap 31264 for the third belt 3321 to pass through. Optionally, at least one convex rib 31263 may protrude from the lower wall of the second tubular structure 31262 to its upper wall, the reinforcement rod 3124 is penetrated by the second tubular structure 31262 (i.e., through its two side walls), and the penetration gap 31264 is formed between the inner surface of the upper wall of the second tubular structure 31262 and the upper outer surface of the reinforcement rod 3124. In various examples, the reinforcing rod 3124 is located between the two side walls of the first tubular structure 31261 and / or between the ribs 31263. In one example, the fixing belt limiting structure 3126 can be made of plastic, resin, metal, etc., but the present invention is not limited thereto.Furthermore, the first tubular structure 31261 and the second tubular structure 31262 of the fixing strap retaining structure 3126 can be two separate structures fixedly connected to each other, or they can be an integrally formed structure. Optionally, as shown in Figures 12A and 14 , the bottom support member 3120± of this embodiment can also be provided with another fixing strap retaining structure, for example, located near the first receiving slot 3121, to restrain the fourth connecting end 3323 of the second strap assembly 3320, thereby further limiting the fixing strap assembly and, in particular, preventing the second connecting device 33231 from swinging freely. This other fixing strap retaining structure can, for example, have the same structure as the first retaining structure 2126 of the first embodiment, but can also have other structures, and the present disclosure is not limited thereto. Optionally or alternatively, the bottom cover is connected to the bottom support member 3120 near the first receiving slot 3121 and / or the second receiving slot 3122, for example, via an adhesive structure, snap fastener structure, etc. Optionally, a slot is provided at the connection structure for the third strap 3321 to pass through, thereby further securing the fixed strap assembly. Furthermore, the bottom support member 3120 may also be provided with a recess through which the fixed strap assembly extends, thereby further preventing the fixed strap assembly from slipping sideways and further reducing the overall weight of the bottom support member 3120. Figure 15A shows a perspective view of a carrier 4100 and a fixed strap assembly 4300 according to a third embodiment of the present disclosure, with the bottom cover removed to illustrate the specific structure of the bottom support member 4120 and its specific connection to the fixed strap assembly 4300. Figure 15B shows a partial cross-sectional view taken along line KK in Figure 15A, and Figure 15C shows a partial cross-sectional view taken along line NN in Figure 15A. FIG15A shows the carrier 4100 and the fixing strap assembly 4300 in use, and FIG16 shows the carrier 4100 and the fixing strap assembly 4300 in a stored state. As shown in FIG15A , the carrier 4100 and the fixing strap assembly 4300 in the third embodiment of the present disclosure have a similar structure to the first embodiment, except that no reinforcing bracket is provided in this embodiment, that is, no reinforcing rod 3124 as shown in FIG12A is provided. Specifically, the bottom support member 4120 of this embodiment may also be provided with a fixing strap limiting structure 4126 for limiting the position of the fixing strap assembly 4300. In one example, two fixing strap limiting structures 4126 may be provided, one located at or near each end of the bottom support member 4120 along the longitudinal axis D8.For example, two support legs 4123 are disposed on the bottom side of the bottom support member 4120 and are symmetrically positioned at both ends of the bottom support legs 4120 in the longitudinal direction D8, for example, near their edges. Two fixing strap limiting structures 4126 can be disposed on each of the support legs 4123, specifically on the inner side of the support legs 4123, to prevent interference between the support legs 4123 and the fixing strap assembly 4300. Optionally, the two fixing strap limiting structures 4126 are symmetrically positioned about the midline of the bottom support member 4120 in the longitudinal direction D8, that is, they lie on a line (a virtual line, not shown) extending along the longitudinal direction D8. In this embodiment, the two fixing strap limiting structures 4126 can be positioned at the midline of the bottom support member 4120 in the transverse direction D9, but the present disclosure is not limited thereto. They can also be positioned offset from this midline. In another embodiment, only one fixing strap retaining structure 4126 may be provided. This fixing strap retaining structure 4126 may be configured to extend along the longitudinal axis D8 of the bottom support member 4120 and simultaneously retain the two second straps 4321. However, the present disclosure is not limited thereto. Referring to Figures 15A to 15C , as in the aforementioned second embodiment, the fixing strap retaining structure 4126 of this embodiment may comprise only the first tubular structure 41261 and / or the second tubular structure 41262. In one example, the fixing strap retaining structure 4126 may comprise only the first tubular structure 41261, which extends along the longitudinal axis D8. The strap retaining structure 4126 can be fixedly mounted on the bottom support member 4120. For example, a first tubular structure 41261 is connected to the bottom support member 4120 at each end along its length via a fastener 4128. In this example, the first tubular structure 41261 has a slit extending through its sidewall along the transverse direction D9. The slits on both sidewalls of the first tubular structure 41261 intersect with each other, forming a through-hole 41264 for the third strap 4321 of the strap assembly to pass through. This confines a portion of the second strap 4321 within the through-hole 41264 of the strap retaining structure 4126, preventing the strap assembly from accidentally detaching. Alternatively, the slit can be positioned near the upper wall of the first tubular structure 41261. In another example, the strap retaining structure 4126 can include only the second tubular structure 41262, which extends along the transverse direction D9. The third belt 4321 of the fixing belt assembly 4300 can pass through the second tubular structure 41262 so that its movement in the longitudinal axis direction D8 is restricted.The second tubular structure 41262 can be fixedly connected to the bottom support member 4120 via fasteners or adhesive. Optionally, the second tubular structure 41262 can be provided with at least one rib 41263 extending along the longitudinal direction D8. The at least one rib 41263 can protrude inward from the upper and / or lower wall of the second tubular structure 41262 (i.e., extend along the vertical direction D10) to form a slit (i.e., a gap 41264), thereby further limiting the movement of the third belt 4321 in the vertical direction D10 and providing greater stability. In a specific example, the at least one rib 41263 can be a plurality of ribs 41263, with the plurality of ribs 41263 protruding downward from the upper wall of the second tubular structure 41262 or protruding upward from the lower wall of the second tubular structure 41262. In another specific example, at least one rib 41263 may be alternately arranged on the upper and lower walls of the second tubular structure 41262, projecting downward and downward, respectively. However, this disclosure is not limited to this, and these ribs may also be arranged in other ways. In yet another example, the fixed belt limiting structure 4126 may include a first tubular structure 41261 and a second tubular structure 41262 that intersect each other. The first tubular structure 41261 and the second tubular structure 41262 may each have the structures described in the aforementioned examples, which are not further described here. The slit of the first tubular structure 41261 and the slit (or through-hole) of the second tubular structure 41262 may communicate with or overlap with each other to form a through-hole 41264. In one example, the first tubular structure 41261 and the second tubular structure 41262 may be separate structures that are interconnected and connected, but this disclosure is not limited to this. In another example, the first tubular structure 41261 and the second tubular structure 41262 can be integrally formed. It should be noted that the sidewall of the first tubular structure 41261 that only has slits can also serve as the ribs 41263 in the second tubular structure 41262. Furthermore, the first tubular structure 41261 and / or the second tubular structure 41262 can be made of plastic, resin, metal, etc., but the present disclosure is not limited thereto. Furthermore, the fixing strap limiting structure 4126 in this embodiment can also be secured via the support legs 4123 provided at both ends of the bottom support member 4120, or fasteners can be passed through the support legs 4123 and the fixing strap limiting structure 4126 to secure both to the bottom support member 4120, but the present disclosure is not limited to the above methods.By directly placing the securing strap retaining structure on the bottom support member 4120, without requiring a reinforcing rod or other reinforcement bracket, the structure of the bottom support member 4120 can be further simplified and its weight reduced, while also enabling the carrier 4100 to be stably secured to the vehicle seat. Figure 17 shows a bottom perspective view of a carrier 5100 according to a fourth embodiment of the present disclosure, with the bottom cover removed to reveal the bottom support member 5120 of the carrier 5100. Figure 18 shows a bottom schematic view of the carrier 5100 of Figure 17, specifically illustrating the structure of the bottom support member 5120. Figures 19A and 19B show perspective and top views of the securing strap retaining structure 5126. Figure 20 shows a bottom perspective view of the carrier 5100 shown in Figure 17 secured to a vehicle seat 5600. As shown in Figures 17, 18, and 20, the bottom support member 5120 of the carrier 5100 of this embodiment may be provided with a fixing strap retaining structure 5126 and / or a reinforcing rod 5124. The reinforcing rod 5124 may have a structure and configuration similar to that of the aforementioned second embodiment and will not be described in detail here. The following description will primarily focus on the differences between this embodiment and the aforementioned embodiments. In this embodiment, the fixing strap retaining structure 5126 is configured to retain the fixing strap assembly 5300 (see Figure 20) in position, preventing the fixing strap assembly 5300 from slipping off the case of the carrier 5100 when in use. Furthermore, when not in use, the fixing strap assembly 5300 is at least partially restrained within the carrier 5100, preventing it from dispersing around the carrier 5100 and facilitating quick removal and securement. In one example, the bottom support member 5120 may be provided with two fixing strap retaining structures 5126, each retaining one of the third straps 5321 of the fixing strap assembly 5300. Specifically, the two fixing strap retaining structures 5126 may be provided on the reinforcement rod 5124, for example, fixedly disposed at or near the ends of the reinforcement rod 5124. Alternatively, the fixing strap retaining structures 5126 may be disposed near and inside the support legs 5123. In another example, the carrier 5100 may not be provided with a reinforcement rod 5124, and the two fixing strap retaining structures 5126 may be disposed at or near the ends of the bottom support member 5120 along the longitudinal axis D11. Alternatively, the fixing strap retaining structures 5126 may comprise a first tubular structure 51261 and / or a second tubular structure 51262.In this embodiment, as shown in Figures 18 to 19B , the fixing belt limiting structure 5126 may include a first tubular structure 51261 and a second tubular structure 51262 that intersect each other. The first tubular structure 51261 may be arranged along the longitudinal axis D11. Specifically, the first tubular structure 51261 may extend in the longitudinal axis D11 to be positioned around and secured to or near both ends of the reinforcing rod 5124. The second tubular structure 51262 may be arranged at an angle to the first tubular structure 51261, that is, the second tubular structure 51262 also forms an angle with the reinforcing rod 5124. For example, as shown in FIG18 , at least a portion of the second tubular structure 51262 is inclined (i.e., angled) relative to both the longitudinal axis D11 and the transverse axis D12 of the carrier 5100, such that the distance between the first ends 51262a of the two second tubular structures 51262, respectively located at opposite ends of the bottom support member 5120, is smaller than the distance between the second ends 51262b of the two second tubular structures 51262. It should be noted that when the carrier 5100 is placed on a vehicle seat, the first ends 51262a of the second tubular structures 51262 are located closer to the vehicle seat back, while the second ends 51262b are located farther away from the vehicle seat back. Further referring to Figures 18 and 20 , it can be seen that by providing such a fixing belt limiting structure 5126, when the carrier 5100 is secured to the vehicle seat 5600 via the fixing belt assembly 5300, the distance between the two belt bodies resting against the front side of the carrier 5100, such as the second belt body 5312 connected to or integrally formed with the third belt body 5321, is increased. The increased distance is indicated by the reference numeral "W5" in the figures. That is, the distance W5 shown in Figure 20 is greater than the distance W4 shown in Figure 10. As a result, when the vehicle suddenly stops due to a collision or emergency, the pet can be prevented from colliding with the taut and harder belt body, thereby improving the safety of the pet in the carrier 5100. In one example, the first tubular structure 51261 and the second tubular structure 51262 can be connected to each other via at least a through-gap (not shown, similar to "31264" in the previous embodiment, which will not be described in detail here), thereby allowing the fixing strap assembly (e.g., the third strap 5321 thereof) to extend within the second tubular structure 51262 and pass through the through-gap between the first tubular structure 51261 and the second tubular structure 51262. Optionally, the second tubular structure 51261 and the second tubular structure 51262 can be integrally formed, wherein the through-gap is located on a sidewall of the first tubular structure 51261 within the first tubular structure 51262.Alternatively, the first tubular structure 51261 and the second tubular structure 51262 may be separate components assembled together. In another example, the first tubular structure 51261 and the second tubular structure 51262 are not connected. For example, the first tubular structure 51261 is configured to be secured to the bottom support member 5120, for example, via fasteners, and sleeved over the reinforcement rod 5124, thereby securing the reinforcement rod 5124 and the fixing strap retaining structure 5126 to the bottom support member 5120. The second tubular structure 51262 is configured to guide and retain the fixing strap assembly. The first tubular structure 51261 and the second tubular structure 51262 may overlap. In other examples, the fixing strap retaining structure 5126 may include only the second tubular structure 51262, fixedly connected to the bottom support member 5120, to guide and retain the fixing strap assembly. Optionally, compared to the second tubular structure 31262 in the previous embodiment (see FIG. 12A ), as shown in FIG. 18 and FIG. 19B , the second tubular structure 51262 in this embodiment has a longer length L4 (i.e., L4 > L3). This further increases the length of the third strap 5321 extending within the securing strap retaining structure 5126, thereby further enhancing the retaining effect on the securing strap assembly. Furthermore, as shown in FIG. 18 , the bottom support member 5120 in this embodiment may also be provided with one or more adhesive-reducing grooves 5127 , positioned away from other structures on the bottom support member 5120. This facilitates molding of the bottom support member 5120 and reduces the weight of the bottom support member 5120 and the carrier 5100. FIG. 21 shows a rear view of a carrier 6100 according to the fifth embodiment of the present disclosure, i.e., a view from the side of the carrier 6100 near the vehicle seat backrest. The carrier 6100 of this embodiment differs from the previous embodiment in that the first window 6116A on the rear side (i.e., near or in contact with the side support 6111 of the vehicle seatback when the carrier 6100 is placed on the vehicle seat) can be larger than the first window 6116B on the front side (i.e., farther from the side support 6111). When the carrier 6100 is placed in the vehicle, at least a portion or the entire rear side of the carrier 6100 will abut the vehicle seatback. By increasing the size of the first window 6116A on the rear side (i.e., making it larger than the first window 6116B on the side farther from the vehicle seatback), air permeability is increased, thereby improving the air permeability of the rear side of the carrier 6100.In addition, the window 6116A and / or the first window 6116B may have a generally rectangular shape, but the present disclosure is not limited thereto, and may also have a circular, elliptical, trapezoidal, or other shapes. Next, a second group of embodiments for securing a carrier to a vehicle seat will be described. It should be understood that some components or structures in each group of embodiments may also be applied to other groups of embodiments. For the sake of simplicity, the embodiments described below will omit some descriptions of components or structures that are the same as those in the aforementioned embodiments. More and more caregivers are using carriers (such as sleeping boxes) for children or pets to ensure their safety in moving vehicles. In order to more stably secure the box to the vehicle seat, some existing carriers use a combination of Top Tether components and LATCH components for securing. Different vehicle types may have different anchor points. For example, a common tether anchor point (i.e., the anchor point on the vehicle used to connect the end of the top tether assembly) may be located at the top of the trunk near the vehicle seat back (hereinafter referred to as "anchor point G1"), or at a further angle from the top of the trunk relative to the vehicle, or below the vehicle seat back (hereinafter referred to as "anchor point G2"). Anchor point G1 is closer to the vehicle, while anchor point G2 is farther away. Typically, to connect to anchor point G1 or anchor point G2, the tether strap of existing top tether assemblies is adjustable in length. However, the elongation of the tether strap remains constant. When crash-tested at different anchor points, the test results may vary significantly, and some test data may not meet the safety requirements of the vehicle. In other words, existing tether assemblies may not provide adequate protection for children or pets when connected to certain anchor points, compromising safety. An embodiment of the present disclosure provides a connection and fixing device (also referred to as a "fixing belt assembly") M300. oReferring to Figures 22 to 25, Figure 22 is a perspective view of a vehicle M100 secured to a vehicle seat M500 via a connecting fixture M300; Figure 23 is a perspective view of the connecting fixture M300; Figure 24 is a perspective view of the vehicle M100 equipped with the connecting fixture M300, with the bottom cover covering the bottom support M120 removed to illustrate the connection between the connecting fixture M300 and the bottom support M120; and Figure 25 is a perspective view of the bottom support M120 equipped with the connecting fixture M300. As shown in Figure 22, the vehicle M100 includes a box body M110 and a bottom support M120. The bottom support M120 is detachably connected to the box body M110 and, together with the box body M110, forms a box to provide space for pets or children. The connecting fixture M300 may be configured to secure the vehicle M100 to the vehicle seat M500. In one example, at least a portion of the connecting fixture M300 may be disposed around a side of the vehicle M100 away from the backrest of the vehicle seat M500, allowing the vehicle M100 to rest against the backrest of the vehicle seat M500 and be secured to the vehicle seat M500. Specifically, a first connection end of the connecting fixture M300 may be connected to a corresponding anchor point on or above the top of the vehicle seat (hereinafter referred to as the "first anchor point"). At least a portion of the connecting fixture M300 (e.g., its belt body) may be disposed from above the vehicle M100, from the side of the vehicle M100 away from the backrest of the vehicle seat M500, to below the vehicle M100, so that a second connection end of the connecting fixture M300 is connected to another anchor point on the vehicle seat (hereinafter referred to as the "second anchor point"), such as a vehicle seat belt interface or an ISOFIX interface. However, the present disclosure is not limited to the aforementioned connection positions and winding methods. Referring to Figures 22 and 23 , the connection and fixing device M300 of this embodiment may be a fixing belt assembly, comprising a first belt connection assembly (also referred to as the first belt assembly) M301 and a second belt connection assembly (also referred to as the "first belt assembly") M302. The first belt connection assembly M301 and the second belt connection assembly M302 may be detachably connected to each other to facilitate replacement, exchange, or maintenance.Specifically, one end of the first belt connecting assembly M301 (also referred to as its "first end") constitutes the first connection end of the connecting fixture M300. The other end of the first belt connecting assembly M301 (also referred to as the "second end") is detachably connected to the first end M332 of the second belt connecting assembly M302. The second end M333 of the second belt connecting assembly M302 constitutes the second connection end of the connecting fixture M300. In this embodiment, the first belt connecting assembly M301 may include a first belt structure M310 and a second belt structure M320. The first belt structure M310 and the second belt structure M320 are used interchangeably and are each detachably connected to the second belt connecting assembly M302. That is, the first belt structure M310 and the second belt structure M320 are not used simultaneously. Depending on the anchoring point or anchoring method in the vehicle, the first belt structure M310 or the second belt structure M320 can be used interchangeably to connect to the second belt connecting assembly M302. For example, when the carrier M100 is placed on a vehicle that uses the anchor point G1 as the first anchor point, the carrier M100 can be secured via the first belt structure M310. However, when the carrier M100 is placed on a vehicle that uses the anchor point G2 as the first anchor point, the first belt structure M310 can be replaced with the second belt structure M320 so that the carrier M100 can be secured to the vehicle seat M500 via the second belt structure M320. Specifically, as shown in FIG. 23 , the second belt structure M310 can include a first belt body M311, and a first end M312 and a first end M313 located at both ends of the first belt body M311. When the first belt structure M310 is used to connect with the second belt connecting assembly M302, the first end M312 of the first belt structure M310 constitutes the first connection end of the connecting and fixing device M300, while the second end M313 is detachably connected to the second belt connecting assembly M302. For example, The first strap structure M310 may be a Top Tether assembly, and the second strap connection assembly M302 may be a LATCH assembly. In one example, the first end M312 may be provided with a hook (e.g., a Tether hook) for connection to a second anchor point on the vehicle. Alternatively or additionally, the second end M313 may be provided with a buckle for removably engaging with a buckle provided at the first end M332 of the second strap connection assembly M302, but the present disclosure is not limited thereto. In other examples, the removable connection structure provided at the second end M313 of the first strap structure M310 and the first end M332 of the second strap connection assembly M302 may also be a hook-and-loop structure, a snap-on structure, or the like, and the two structures may be interchangeable.Similarly, the second strap structure M320 may also include a second strap body M32K and a first end M322 and a first end M323 located at opposite ends of the second strap body M321. When the second strap structure M320 is connected to the second strap connection assembly M302, the first end M322 of the second strap structure M320 constitutes the first connection end of the connection and fixing device M300, while the second end M323 is detachably connected to the second strap connection assembly M302. In one example, the second strap structure M320 may also be a top tether assembly, and the first end M322 and the second end M323 of the second strap structure M320 may be configured in a similar manner to the first strap structure M310, for example, each being provided with a removable mating structure such as a hook and a buckle, which will not be further described here. Providing this detachable connection facilitates interchangeability between the first and second belt structures M310 and M320, while ensuring a reliable and stable connection between the first and second belt structures M310 and M320 and the second belt connection assembly M302. This ensures compatibility with different types of vehicles utilizing different first anchor points. Furthermore, the first belt structure M310 may be equipped with a first length adjuster M314 to adjust the initial effective length of the first belt structure M310. Additionally or alternatively, the first belt structure M320 may be equipped with a second length adjuster M324 to adjust the initial effective length of the second belt structure M320. It should be noted that while the figures illustrate length adjusters on both the first and second belt structures M310 and M320, this is not a limitation. Alternatively, length adjusters may be provided on either or both belt structures. Optionally, the initial effective length of the first belt body M311 of the first belt structure M310 can be smaller than the initial effective length of the second belt body M321 of the second belt structure M320 to accommodate the varying distances between the vehicle M100 and the corresponding anchor points on the vehicle. It should be noted that the "initial effective length" (also referred to as "usable length") herein refers to the length of the belt body used to secure the vehicle M100 when the vehicle M100 is secured to the vehicle seat and not subjected to an impact. That is, in this embodiment, the total length of the first belt body M311 (i.e., the length of the belt itself) can be smaller than the total length of the second belt body M321. Alternatively, the first and second belt bodies M311, M321 can have the same total length and then be adjusted to different initial effective lengths using a length adjuster to accommodate the second anchor points of different vehicle types.In this embodiment, the first belt structure M310 and the second belt structure M320 may each have a certain elongation. In one example, the first belt structure M310 (e.g., its first belt body M311) and the second belt structure M320 (e.g., its second belt body M321) have different elongations. Specifically, the elongation of the first belt body M311 of the first belt structure M310 may be greater than the elongation of the second belt body M321 of the second belt structure M320. For example, the elongation of the belt can be tested using the following method: a length of belt L1 is taken and a force is slowly applied to it to a certain amount, such as 5560 N (1250 lbf). The elongated length, i.e., L2, is measured. The elongation percentage of the belt is calculated using the formula (L2 - L1) / LP100%. However, the present disclosure is not limited to this testing method. Based on the above tests, it can be seen that under the same test (stress) conditions, the first strap M311 is shorter and designed to have a higher elongation, meaning it is softer (deforms more). This allows it to provide greater cushioning after an impact due to its greater deformation. Meanwhile, the second strap M321 is longer and designed to have a lower elongation, meaning it is stiffer (deforms less). This allows it to achieve the same cushioning effect after an impact of the same magnitude, combining the longer webbing with the smaller deformation. This results in a more stable attachment of the carrier M100 to the vehicle seat. Through the above testing methods, the elongation of the first strap M311 can range from 17% to 26%, while that of the second strap M321 can range from 7% to 16%. Specifically, the elongation of the first strap M311 is 21%, and the elongation of the second strap M321 is 12%. oOf course, the present disclosure is not limited to the above values. By providing the first belt structure M310 and the second belt structure M320 with different elongations on the connecting fixture M300, the connecting fixture M300 can be better adapted to fixing the vehicle M100 to different types of vehicles (ie, using different anchor points). For example, when the vehicle M100 is fixed in the vehicle using an anchor point G1 that is relatively close to the vehicle M100 (i.e., located at the top of the trunk near the backrest of the vehicle seat M500, as shown in the figure), the first belt structure M310 with a relatively large elongation can be used in the connecting and fixing device M300; and when the vehicle M100 is fixed in the vehicle using an anchor point G2 that is relatively far from the vehicle M100 (i.e., located at a relatively large oblique angle relative to the vehicle M100 at the top of the trunk, or below the backrest of the vehicle seat M500), the second belt structure M320 with a relatively small elongation can be used. In this way, the instantaneous force on the first belt body M311 and the second belt body M321 when the vehicle M100 is impacted can be reduced. That is, the instantaneous force on the belt body is buffered by slow deformation, so that the belt body (such as the second belt body M31D) will not be instantly broken due to a short belt body. Alternatively, the length of the belt (e.g., the second belt M321) will not cause excessive deformation, thereby weakening the restraining force on the vehicle. More specifically, when the vehicle M100 is secured via the anchor point G1, the effective connection distance between the first belt structure M310 and the anchor point G1 is short, meaning the initial effective length of the first belt M311 is short. By increasing its elongation, its overall deformation can be increased, allowing it to deform more slowly, reducing the instantaneous force on the belt and preventing breakage, thereby ensuring the restraining force on the vehicle. When the vehicle M100 is secured via the anchor point G2, the effective connection distance between the second belt structure M320 and the anchor point G2 is longer, meaning the initial effective length of the second belt M321 is longer. By reducing its elongation, its overall deformation can be reduced, ensuring the restraining force on the vehicle, thereby more firmly and stably securing the vehicle M100 to the vehicle seat. Furthermore, as shown in FIG23 , The second belt connection assembly M302 includes a third belt body M331, and a first end M332 and a second end M333 located at both ends of the second belt body M331.Specifically, the first end M332 of the second belt connection component M302 is detachably connected to the second end M313 of the first belt structure M310 or the second end M323 of the second belt structure M320. The second belt connection component M302 may include at least one second end M333, and the first end M332 and each second end M333 may be connected via a corresponding third belt body M331. For example, in this embodiment, the second belt connection component M302 may be provided with two second ends M332, and the first end M332 and each second end M332 may be connected via a second belt body M331, that is, the second belt connection component M302 includes two second ends. The first end M332 is connected via a second strap M331, which is slidably connected to a connector (such as a buckle or loop) provided at the first end M332. This allows the position of the first end M332 on the second strap M331 to be adjusted to better adapt to the outer contour of the carrier M100 fixed to the vehicle seat, thereby more stably securing the carrier M100 to the vehicle seat. In this example, the first belt body M311, the second belt body M321, and / or the third belt body M331 may be elastic webbing, but the present disclosure is not limited thereto. In addition, although not shown in the figures, it is understood that the second belt connection assembly M302 may also include a length adjuster to adjust the initial effective length of the second belt body M331. With reference to Figures 24 and 25, at least a portion of the connecting and fixing device M300 (e.g., the belt body) may be connected to the carrier M100, so that when the carrier M100 is fixed to the vehicle seat via the connecting and fixing device M300 (see Figure 22), the connecting and fixing device M300 is not likely to slip off the carrier M100. Specifically, in this embodiment, a belt limiting structure M126 (which has the same structure and function as the fixing belt limiting structure in the previous embodiment) may be provided on the bottom support member M120± (e.g., its bottom). It is used to position at least a portion of the belt of the connecting and fixing device M300 (e.g., the second belt M331 of the second belt connecting assembly M302). Thus, when the connecting and fixing device M300 is used to secure the carrier M100, the belt limiting structure M126 can confine the connecting and fixing device M300 within a certain range, preventing it from separating from the carrier M100. As shown in FIG24 , the third belt M331 can pass through the belt limiting structure M126 along the transverse direction MD2, thereby limiting the movement of the second belt M331 along the longitudinal direction MD1, preventing the connecting and fixing device M300 from slipping off the side of the carrier M100. In one example, two belt limiting structures M126 can be provided, and the two belt limiting structures M126 can be used to position the connecting and fixing device M300. They are respectively located at or near the two ends of the bottom support member M120 along the longitudinal axis MD1. Optionally, the two belt limiting structures M126 are symmetrically arranged about the centerline of the bottom support member M120 in the longitudinal axis MD1. In another example, only one belt limiting structure M126 may be provided. This belt limiting structure M126 may be arranged to extend along the longitudinal axis MD1 of the bottom support member M120 and simultaneously limit the position of the second belt body M331 connecting the two ends of the bottom support member M120 (along the longitudinal axis MD1), but the present disclosure is not limited to this.In one example, as shown in Figures 24 and 25, the bottom support member M120 can also be provided with a reinforcement bracket to enhance the structural stability of the bottom support member M120 and the carrier M100. In this embodiment, the reinforcement bracket can be a reinforcement rod M124, positioned midway along the bottom support member M120's transverse axis MD2. A belt limiting structure M126 can be provided on the reinforcement rod M124. For example, two belt limiting structures M126 can be fixedly disposed at or near the ends of the reinforcement rod M124 to limit the position of the second belt M331 passing through the belt limiting structures M126. Referring to Figures 26A and 26B, Figure 26A shows a partial perspective view of the second strap connection assembly M302 of a connection fixture M300 connected to a bottom support member M120 according to another embodiment of the present disclosure, and Figure 26B shows a schematic structural diagram of the second strap connection assembly M302 at the connection position with the bottom support member M120. In another embodiment, the connection fixture M300 may have a similar structure to the aforementioned embodiment and will not be described in detail here. This embodiment differs in that the connection fixture M300 may be provided with a cushioning structure to further enhance the cushioning effect on the vehicle M100. In this embodiment, the cushioning structure may be provided between the first connection end (also referred to as the "first connection means") and the second connection end (also referred to as the "second connection means") of the connection fixture M300, for example, on the first strap M311 and / or the first strap M321 of the first strap connection assembly M301 and / or the second strap M331 of the second strap connection assembly M302. In one example, a buffer structure can be provided at the portion of the connection fixture M300 that surrounds the carrier M100 (either non-contacting or contacting). Alternatively, the buffer structure can be provided at the location where the connection fixture M300 connects to (or contacts) the carrier M100. As shown in FIG26A , the buffer structure can be provided at the location where the first strap connection assembly M302 of the connection fixture M300 connects to the bottom support member M120, for example, at the portion where the second strap body M331 of the second strap connection assembly M302 passes through the strap retaining structure M126.Specifically, the buffer structure may include a buffer strip M334, which is secured to the third belt body M331 of the second belt connecting assembly M302 by sewing. For details, see the first stitching line MX1 (also referred to as the first fixing member) and the second stitching line MX2 (also referred to as the second fixing member) shown in Figures 26A and 26B. The initial effective length of the buffer strip M334 is defined between the first stitching line MX1 and the second stitching line MX2. However, the buffer structure of the present disclosure is not limited to the aforementioned structure. In this embodiment, the provision of such a buffer strip M334 can provide better cushioning for the vehicle M100 during impacts. In one example, the buffer structure M334 can be disposed at the bottom of the bottom support member M120 and concealed by a bottom cover member wrapped around the outside of the bottom support member M120. Thus, the buffer structure M334 can be well concealed at the bottom of the vehicle M100, enhancing the overall appearance of the vehicle M100. In other embodiments, the buffer structure of the present disclosure may have other structures, and the present disclosure is not limited thereto. The buffer structure may also include knot points disposed on the connecting fixture and / or the buffer belt M334. In one example, referring to Figures 26A and 26B , the second belt M331 may be provided with a knot point MCI at the portion corresponding to the buffer belt M334. As shown in Figure 26B , the knot point MCI of the third belt M331 may be located between the first stitching point MX1 and the second stitching point MX2 of the third belt M331. Optionally, multiple knot points MCI may be provided on the third belt M331. When the vehicle is impacted and the third belt M331 is pulled, the effective length of the second belt M331 can be further increased (i.e., from the initial effective length to the buffering effective length) by releasing (e.g., pulling apart) the knot point MC1, thereby providing more and further cushioning for the vehicle. Alternatively or additionally, the knot points serving as the buffer structure may be provided at other locations. For example, The embodiments of FIG. 27A to FIG. 27D respectively illustrate a specific buffer structure, but it should be understood that these embodiments are merely examples and not limiting.It should be noted that in the above context of the present disclosure, the "initial effective length" of the buffer band M334 and the "initial effective length" of the second belt body M331 can be considered to be the length between the first and second stitching points MX1 and MX2 (i.e., between the fixings thereto) when not under tension, that is, when not stretched, or when the knots or other buffer structures provided thereon are not released or implemented. The "buffering effective length" of the buffer band M334 and the second belt body M331 can be considered to be the length of both when the buffering structures are in effect (i.e., when the buffer band M334 is stretched under force, or when the knots of the buffer band M334 and / or the third belt body M331 are untied). As shown in FIG27A , the buffering structure can include a buffer band M334, with both ends of the buffer band M334 secured to the third belt body M331 by sewing (i.e., at the first stitching point MX1 and the second stitching point MX2). Specifically, the buffer belt may be provided above the third belt body M331. Optionally, the initial effective length of the buffer belt M334 between the first stitching point MX1 and the second stitching point MX2 is smaller than the initial effective length of the second belt body M331 between the two stitching points MX1 and MX2. Alternatively or additionally, the elongation of the buffer strips M334 is greater than the elongation of the third tape body M331. As shown in FIG27B , the buffer structure may include multiple buffer strips M334, each of which is secured to the third tape body M331 at both ends by sewing. Optionally, the initial effective length of each of the multiple buffer strips M334 between two stitching points MX1 and MX2 is less than the initial effective length of the third tape body M331 between stitching points MX1 and MX2. Alternatively or additionally, the elongation of each of the multiple buffer strips M334 is greater than the elongation of the second tape body M331. In this embodiment, the multiple buffer strips M334 of the buffer structure may have the same elongation or different elongations. In one example, the multiple buffer strips are all disposed above the second tape body M331, or alternatively, at least one of the multiple buffer strips is disposed below the second tape body M331. As shown in FIG. 27C , the buffer structure may include a buffer belt M334 in an annular structure, or a buffer belt folded in half, and the annular or folded buffer belt M334 is fixed to the third belt body M331 by sewing at both ends in the length direction of the third belt body M331, for example, above the third belt body M331.Optionally, the initial effective length of the buffer tape M334 between the first and second stitching points MX1 and MX2 (i.e., the length of the annular or folded buffer tape M334 located between the two stitching points MX1 and MX2) is shorter than the initial effective length of the third tape body M331 between the two stitching points MX1 and MX2. Alternatively or additionally, the elongation of the buffer tape M334 is greater than the elongation of the third tape body M331. As shown in FIG27D , the buffer structure may include a buffer tape M334 and at least one knotting point MC2 provided on the buffer tape M334. Both ends of the buffer tape M334 are respectively fixed to the third tape body M33K by sewing. Optionally, the initial effective length of the buffer tape M334 between the first stitching point MX1 and the second stitching point MX2 (that is, the effective length of the buffer tape M334 between the two stitching points when the knotting point MC2 of the buffer tape M334 is not released) is less than the initial effective length of the third tape body M331 between the two stitching points MX1 and MX2. Furthermore, in this embodiment, the elongation of the buffer belt M334 is less than the elongation of the third belt body M331. Therefore, when the vehicle is impacted and the buffer belt M334 and the second belt body M331 are pulled, the impact can first be cushioned by the knot point MC2 on the buffer belt M334. That is, the knot point MC2 can be released, allowing the buffer belt M334 to unfold. In other words, the effective buffering length between the two stitching points MX1 and MX2 is greater than the effective length of the third belt body M331 between the two stitching points (that is, the length of the third belt body M331 without the knot point, or the length of the knot point on the third belt body M331 when it is released), thereby providing a cushioning effect on the vehicle. In another embodiment, the buffer strap M334 can be provided with at least one knotting point MC2, and the effective buffering length of the buffer strap M334 between the first stitching point MX1 and the second stitching point MX2 (i.e., the length after the knotting point MC2 is released) can still be less than the effective length of the second strap body M331 between the two stitching points (including the initial effective length and, if a knotting point MC1 is provided, the length after the knotting point is released). In this case, the elongation of the buffer strap M334 can be greater than that of the third strap body M331, thereby providing a better cushioning effect when the carrier is impacted. This also reduces the instantaneous force on the buffer strap M334, preventing it from breaking, thereby ensuring the restraining force on the carrier.Although not shown in the figures, it should be understood that in the embodiments shown in Figures 27A to 27D , the second belt body M331± may also be provided with at least one knotting point (e.g., the knotting point MC1 shown in Figure 26B ), but the present disclosure is not limited to this. Furthermore, the present disclosure is not limited to the above-described embodiments. Instead, the buffer structures (including the buffer belt M334, the first knotting point MC1, and / or the second knotting point MC2) and / or the specific structures of the third belt body M331 in the above-described embodiments may be combined or used interchangeably, provided that the structures do not conflict. Furthermore, it should be noted that while the figures only show the third belt body M331± provided with a buffer structure, it should be understood that other belt bodies of the connection and fixing device M300 (e.g., the first belt body M311 and / or the second belt body M321 surrounding the carrier M100, or at locations connected to or in contact with the carrier M100) may also be provided with a buffer structure, and the present disclosure is not limited to this. In other words, in the present disclosure, a buffer structure can be provided on at least one of the first, second, and third straps M311, M321, and M331. Furthermore, the buffer structure provided on the first and / or third straps M311, M321, and M331 can also have the structure described in any of the aforementioned embodiments, and will not be further described herein. By providing a buffer structure on at least one of the first, second, and second straps M311, M321, and M331 (collectively referred to as "stripe bodies") of the connecting and securing device M300, the strap bodies of the connecting and securing device M300 can effectively cushion the impact of a vehicle, thereby improving the vehicle's crashworthiness and safety. Below, a third embodiment of a vehicle secured to a vehicle seat using a strap will be described. It should be understood that some components or structures in each embodiment group are also applicable to other embodiments. For the sake of simplicity, descriptions of components or structures in the embodiments described below that are identical to those in the preceding embodiments will be omitted. When transporting a child over long distances and requiring integration with a vehicle, some carriers utilize LATCH and / or Top Tether components to secure the child to the vehicle seat. However, these components must be attached to the carrier each time the carrier is used, making it cumbersome and inconvenient.In particular, when engaging the soft LATCH assembly to the anchor points on the vehicle seat, it's impossible to engage both LATCH connectors simultaneously. Therefore, the user must first engage both LATCH connectors to the corresponding positions on the carrier, and then tighten the LATCH assembly's connecting straps to secure the carrier to the vehicle seat, making the operation cumbersome. Furthermore, such an assembly can be easily scattered and difficult to store, or require additional space for storage, which can lead to the loss of related components and reduce the user experience. The following describes embodiments of the present disclosure with reference to the relevant drawings. It should be noted that when one component is considered to be "connected" to another component, it can be directly connected to the other component and integrated therewith, or there may be an intermediate component. The terms "mounted," "one end," "other end," and similar expressions used herein are for illustrative purposes only. Referring to FIG. 28 , an embodiment of the present disclosure provides a carrier N1 that can be secured to a vehicle seat N600. Specifically, Figure 28 shows a perspective view of a vehicle N1 secured to a vehicle seat N600. The disclosed vehicle N1 may include a box N100, which provides a seating space for children or pets. The box N100 includes a box body N110 and a bottom support N120, which is detachably connected to the box body N100. A cover is provided on the exterior of the box N100. The cover may be made of at least one of fabric, plastic, or polyethylene (PE), but the present disclosure is not limited thereto. Specifically, the cover may include a body cover N101 that covers the exterior of the box body N110, and a bottom cover N102 that covers the exterior of the bottom support N120. The body cover N101 and the bottom cover N102 may be made of the same material or a combination of materials, or different materials or a combination of materials. The body cover N101 and the bottom cover N102 are detachably connected, for example, via a zipper, Velcro, hook-and-loop assembly, etc., although the present disclosure is not limited thereto. In one embodiment, as shown in FIG. 28 , the carrier N1 may include a strap assembly N500. The strap assembly N500 is configured to connect the case N100, for example, in a detachable or non-detachable manner, to secure the case N100 to the vehicle seat N600. Optionally, when the carrier N1 of the present disclosure is not in use, at least a portion of the strap assembly N500 may remain connected to the case N100.The strap assembly N500 includes a first strap N510, a second strap N520, a first connection end N501, and a second connection end N502. The first strap N510 and the second strap N520 constitute the strap body of the strap assembly N500, which is located between the first and second connection ends N501 and N502. One end of the first strap N510 forms the first connection end N501 of the strap assembly N500, and a first connecting device, such as a hook, is provided at the first connection end N501. In one specific example, the first connecting device may be a top tether, which connects to a top anchor point on a vehicle seat or a corresponding anchor point above the vehicle seat. The other end of the first strap N510 connects to one end of the second strap N520. The other end of the second strap N520 forms the second connection end N502 of the strap assembly N500 and is removably or non-removably connected to the case N100. For example, the second connection end N502 can be connected to the bottom support member N120, specifically located on a side of the bottom support member N120 away from the vehicle seat backrest, more specifically, at the edge of that side of the bottom support member N120. However, the present disclosure is not limited to this. The connection location of the second connection end N502 of the fixing strap assembly N500 can be determined based on the specific structure and strength requirements of the box body N100. In other examples, the second connection end N502 can also be connected to the box body N110. In one example, the fixing strap assembly N500 can be provided with two second connection ends N502. For example, the second strap N520 can be formed from two strips, each of which has one end connected to the other, and each of which has its other end forming a second connection end N502. In another example, the second strap N520 may be formed from a single strap that passes through the connection between the first strap N510 and the second strap N520, with each end forming a second connection end N502. Furthermore, as shown in FIG. 28 , a length adjuster N530 may be provided between the first strap N510 and the second strap N520 to adjust the overall length of the fixing strap assembly N500. The length adjuster N530 may be configured to adjust the length of the first strap N510, the second strap N520, or both, but the present disclosure is not limited thereto.When the carrier N1 is secured to the vehicle seat N600, the first connection end N501 of the fixing strap assembly N500 is connected to a top anchor point on the vehicle seat or a corresponding anchor point above the vehicle seat, at least a portion of the strap (e.g., the second strap N520) is wrapped around the side of the box N100 away from the backrest of the vehicle seat, and the second connection end N502 is connected to the bottom support member N120 of the box N100 to secure the box N100 to the vehicle seat N600. Figures 29 and 30 respectively illustrate bottom perspective views of the carrier N1 shown in Figure 28 in different usage states, with Figure 29 showing the carrier N1 in a left-side usage state, and Figure 30 showing the carrier N1 in a right-side usage state. For ease of explanation and to illustrate the specific structure of the bottom support member N120, the bottom cover member N102 covering the exterior of the box bottom support member N120 has been removed from the vehicle N1 in Figures 29 and 30. With reference to Figures 28 to 30 , to more stably secure the vehicle N1 to the vehicle seat, the vehicle of the present disclosure may also include an ISOFIX connection assembly N200, which connects to the ISOFIX connector provided on the vehicle seat N600 to secure the box N100 to the vehicle seat N600. In one example, the ISOFIX connection assembly N200 may be provided on the bottom support member N120 of the box N100 (obscured in Figure 28 , see Figure 29 ), specifically on the side of the bottom support member N120 near the backrest of the vehicle seat N600. As shown in Figure 29 , the ISOFIX connection assembly N200 includes an engaging portion N210, a connecting portion N220, and an installation portion N230. The engaging portion N210 is configured to engage with corresponding supporting structures on the vehicle seat N600 to secure the carrier N1 relative to the vehicle seat. For example, the engaging portion N210 of this embodiment can engage with a TSOFT X connector provided on the vehicle seat N600. The engaging portion N210 can be positioned on the side of the bottom support member N120 adjacent to the backrest of the vehicle seat N600 and extend outward from that side of the bottom support member N120 to facilitate installation of the box body N100 and connection to the vehicle seat N600. As shown in Figures 29 and 30 , the engaging portion N210 can be moved to different positions relative to the box body N100 to correspondingly engage with different locations on the vehicle seat. This will be described in detail below in conjunction with the connecting portion N220 and the mounting portion N230.The mounting portion N230 is connected to the housing N100, for example, fixedly connected (including removable or non-removable connections) to the bottom support member N120 of the housing N100. In one example, the mounting portion N230 is configured as a rod or tubular member, such as a metal tube, extending in the longitudinal direction ND1 (i.e., the angle direction) of the housing N100. Optionally, the mounting portion N230 is positioned offset from the centerline of the bottom support member N120 in the transverse direction ND2, toward the side of the vehicle seat back. For example, both ends of the mounting portion N230 may be secured to the bottom side of the bottom support member N120 via fasteners. Referring to Figures 29 and 30, the connecting portion N220 is connected between the locking portion N210 and the mounting portion N230, enabling the locking portion N210 to move relative to the mounting portion N230. Specifically, one end of the connecting portion N220 is fixedly (i.e., non-movably) connected to the engaging portion N210, and the other end is movably connected to the mounting portion N230, thereby driving the engaging portion N210 to move relative to the mounting portion N230. In this embodiment, the connecting portion N220 is movable relative to the mounting portion N230 along the longitudinal direction ND1 of the case N100 to adjust the position of the engaging portion N210 relative to the case N100, thereby facilitating the securing of the case N100 to the vehicle seat N600 at various locations. Furthermore, the connecting portion N220 can pivot relative to the mounting portion N230, for example, pivoting about the mounting portion N230 to accommodate the engaging portion N210. The specific arrangement for this arrangement will be described below in conjunction with Figures 33A through 34. In one specific example, the mounting portion N230 is a round rod or tube, and at least a portion of the connecting portion N220 is sleeved onto the mounting portion N230. As shown in Figures 28 to 30 , when the carrier N1 is secured to either side of the vehicle seat N600, the connecting portion N220 and its connected engaging portion N210 can be positioned on the bottom support member N120 at a position offset toward the other vehicle seat. Specifically, as shown in Figure 29 , when the carrier N1 is secured to the left vehicle seat N600, i.e., in a left-side use configuration, the connecting portion N220 and engaging portion N210 can be moved along the longitudinal direction ND1 of the box body N100 to a rightward engaging position. Furthermore, as shown in Figure 30 , when the carrier N1 is secured to the right vehicle seat N600, i.e., in a right-side use configuration, the connecting portion N220 and engaging portion N210 can be moved along the longitudinal direction ND1 of the box body N100 to a leftward engaging position.It should be noted that the terms "left" and "right" mentioned above refer to the view from the front of the vehicle N1 (i.e., the side away from the vehicle seat backrest) when the vehicle N1 is secured to the vehicle seat N600. However, Figures 29 and 30 illustrate bottom views of the vehicle N1 viewed from the bottom. Therefore, the "right engaged position" described above is shown on the left side in Figure 29 , while the "left engaged position" is shown on the right side in Figure 30 . Specifically, as shown in Figure 30 , the connecting portion N220 includes a sliding member N221 and a connecting component. The sliding member N221 is slidably connected to the mounting portion N230 and, optionally, pivots relative to the mounting portion N230, for example, may be pivotally connected to the mounting portion N230. In one specific example, the mounting portion N230 can be tubular, and the sliding member N221 can be formed as a circular sleeve that fits over the mounting portion N230, enabling the sliding member N221 to slide and pivot relative to the mounting portion N230. A connecting member is connected between the engaging portion N210 and the sliding member N221, for example, by a fixed connection, to drive the engaging portion N210 to slide and / or pivot relative to the mounting portion N230. In one example, the connecting member includes a synchronizer N222 and a connecting member N223. The synchronizer N222 connects at least two engaging portions N210 together, enabling the at least two engaging portions N210 to move synchronously. In this embodiment, two engaging portions N210 may be provided. The synchronizer 22 may be a rod disposed along the longitudinal direction ND1 and connected between the two engaging portions N210. This ensures that the two engaging portions N210 extend from the bottom support member N120 to the same length and are capable of synchronous movement and / or pivoting relative to the mounting portion N230 (i.e., relative to the bottom support member N120). As shown in FIG30 , a connecting member N223 is connected between the synchronizer N222 and the sliding member N221. In a specific example, the connecting member N223 may be a rod, with its ends connected to the synchronizer N222 and the sliding member N221, respectively. As shown in FIG29 , the ISOFIX connection assembly of this embodiment may also include a locking device N240 to lock and release the connecting portion N220. The specific structure and operating principle of the locking device N240 will be described below in conjunction with FIG31A and FIG32B . 31A shows a bottom view of the carrier shown in FIG. 29 , FIG. 31B shows a partial cross-sectional view of portion A shown in FIG. 31A , FIG. 32A shows a bottom view of the carrier shown in FIG. 30 , and FIG. 32B shows a partial cross-sectional view of portion B shown in FIG. 32A .As shown in Figures 31A and 31B, a locking device N240 is disposed between the connecting portion N220 and the mounting portion N230 to lock and release the connecting portion N220 from the mounting portion N230. In one embodiment, a portion of the locking device N240 may be fixedly disposed on the connecting portion N220 so as to be movable relative to the mounting portion N230 along with the connecting portion N220 and the engaging portion N210, locking the two portions to different engaged positions. However, the present disclosure is not limited thereto, and alternatively, a portion of the locking device N240 may be fixedly disposed on the mounting portion N230. In a specific example, the locking device N240 may include a mounting seat N244. The mounting base N244 includes an upper cover N2441 and a lower cover N2442. The upper cover N2441 and the lower cover N2442 engage with each other to form a space for accommodating other components of the locking device N240 (e.g., the release operating member N241, at least a portion of the locking member N242, and the reset member N242, as described below). The upper cover N2441 and the lower cover N2442 are each fixedly connected to the connecting portion N220, such as a connecting member, more specifically, the connecting member N223, the synchronizer N222, or both the synchronizer N222 and the connecting member N223, but the present disclosure is not limited thereto. Alternatively, or in addition, the synchronizer N222 can be spaced apart from the sliding member N221, for example, disposed approximately parallel to and spaced apart from each other, with the two connecting members N223 connected therebetween and spaced apart from each other. The accommodating space formed by the locking device N240 is located in the space between the sliding member N221, the synchronizer N222, and the connecting member N223. In this embodiment, the locking device N240 has a locked state and a released state. When the locking device N240 is in the locked state, the ISOFIX connection assembly is locked, meaning that the connecting portion N220 and the engaging portion N210 connected thereto are locked relative to the mounting portion N230 (fixed to the case N100), preventing movement and rotation. When the locking device N240 is in the released state, the ISOFIX connection assembly is released, meaning that the connecting portion N220 and the engaging portion N210 connected thereto are able to move and / or pivot relative to the mounting portion N230. 31A to 32B , the locking device N240 includes a release operating member N241 and a locking member N242. The locking member N242 can cooperate with a corresponding locking portion provided on the mounting portion N230 to lock and release the connecting portion N220, ie, has a locked position and a released position.When the locking member N242 is in the locking position, the locking member N242 engages with the corresponding locking portion, and the connecting portion N220 is locked relative to the mounting portion N230. When the locking member N242 is in the "released position", the locking member N242 is disengaged from the corresponding locking portion, and the connecting portion N220 can be released relative to the mounting portion N230, that is, it can slide and / or rotate. The release operating member N241 is operated to move the locking member N242 from the locked position to the released position. The release operating member N241 is fixedly connected to the locking member N242 and is slidably arranged relative to the mounting portion N230 so as to move relative to the mounting portion N230 together with the locking member N242. Specifically, the release operating member N241 is slidably arranged in the mounting seat N244, that is, in the accommodation space formed by the upper cover N2441 and the lower cover N2442, and is at least partially exposed from the mounting seat N244 to facilitate user operation. As shown in Figure 31B, the mounting seat N244 has a generally U-shaped structure as a whole, that is, there is a notch at the upper end of the U-shaped structure. The locking mechanism N240 further includes a reset member N243, which provides a force that biases the locking member N242 toward its locked position. Specifically, the reset member N243 may be an elastic member, such as a spring. One end of the reset member N243 is disposed on the connecting portion N220 (e.g., its synchronizer N222) or the mounting seat N244, while the other end abuts against the release member N241 and / or the locking member N242 to provide a force that biases the locking member N242 toward its locked position. For example, the locking member N242 may be a locking pin, and the corresponding locking portion provided on the mounting portion N230 may be a locking hole, but the present disclosure is not limited to this. When the release operating member N241 is in its initial position, the locking member N242 is in its locked position. Specifically, the locking pin (i.e., the locking member N242) engages with the corresponding locking hole, thereby locking the connection portion N220 and the engaging member N210 relative to the mounting portion N230, preventing them from moving or rotating. To move the TSOFTX connection assembly (i.e., the sliding connection portion N220), the user can operate the release operating member N241. The locking member N242 moves to the unlocked position in response to the movement of the release operating member N241, disengaging the locking pin from the corresponding locking hole, thereby releasing the lock.At this point, the engaging portion N210 and the connecting portion N220 can be moved. After the connecting portion N220 is moved to the desired position, the unlocking operating member N241 can be released and restored to its initial position under the action of the reset member N243. The locking pin engages with the corresponding locking hole at the desired position, thereby locking the connecting portion N220 again. As shown in Figures 31B and 32B, the locking portion may include multiple sets of locking portions. For example, in this embodiment, the locking portion includes a first locking portion N231 and a second locking portion N232. The first locking portion N231 and the second locking portion N232 can be respectively arranged at different positions along the longitudinal direction ND1 of the mounting portion N230, such as near both ends of the mounting portion N230, to enable the connecting portion N220 to be locked to different positions relative to the mounting portion N230. As shown in FIG31B , when the vehicle N1 is in the left-side use state, the locking member N242 can cooperate with the first locking portion N231; and as shown in FIG32B , when the vehicle N1 is in the right-side use state, the locking member N242 can cooperate with the second locking portion N232. Furthermore, as shown in FIG30 and FIG31A , the vehicle N1 further includes a reinforcing bracket N300 for reinforcing the overall structural strength of the bottom support member N120. The reinforcing bracket N300 is disposed on the bottom side of the bottom support member N120 and includes a first reinforcing rod N310 and a second reinforcing rod N320, wherein specifically, two second reinforcing rods N320 may be provided. The first reinforcing rod N310 extends along the longitudinal direction ND1 of the box body N100 and is connected between the two second reinforcing rods N320. Optionally, the two second reinforcing rods N320 are respectively disposed to extend along the transverse direction ND2 of the box body N100. In one example, The mounting portion N230 of the 1S0FIX connection assembly N200 can be positioned between the two second reinforcement bars N320, located at one end of each second reinforcement bar N320. The mounting portion N230 is spaced a distance from the second reinforcement bar N320 along the transverse direction ND2, for example, adjacent to either side of the bottom support member N120 in the transverse direction ND2. Specifically, the mounting portion N230 has two ends connected to one end of each of the two second reinforcement bars N320, while the first reinforcement bar N310 has two ends connected to or near the other end of each of the two second reinforcement bars N320. In one example, the other end of each second reinforcement bar N320 extends beyond (i.e., continues to extend from) its connection point with the first reinforcement bar N310. In other words, the other end of each second reinforcement bar N320 is not connected to the first reinforcement bar N310 at its distal end, but instead leaves an extended section N321 at its distal end.Optionally, the second reinforcement rod N320 may have a non-linear structure at its extension section N321, such as a curved arc. Specifically, the extension section N321 may be curved to match the curved structure of the side edge of the bottom support member N120. In one example, as shown in Figures 31A and 31B, the TSOFTX connection assembly N200 further includes limiters N340. The limiters N340 are positioned at both ends of the mounting portion N230 to limit the connection portion N220, thereby preventing it from detaching from the mounting portion N230. For example, the limiters N340 may be positioned at the connection points between each of the two second reinforcement rods N320 and the mounting portion N230. In this example, the limiters N340 may be sleeves that fit over the exterior of both ends of the mounting portion N230 (e.g., a tubular member). Furthermore, as shown in FIG32B , a wear-resistant structure N2210 can be provided between the sliding member N221 and the mounting portion N230Z, such as a wear-resistant sleeve fitted inside each end of the sliding member N221. This improves the wear resistance and service life of the structure while also increasing the connection and tightening force, thereby making the sliding connection between the two more stable. Referring to FIG33A through FIG34 , FIG33A illustrates a bottom view of a carrier in a stowed state according to an embodiment of the present disclosure, FIG33B illustrates a partial cross-sectional view of section C shown in FIG33A , and FIG34 illustrates another bottom view of the carrier shown in FIG33A . With reference to Figures 32A to 33B, the connecting portion N220 of this embodiment is capable of pivoting relative to the mounting portion N230 to accommodate the ISOFIX connection assembly N200. Specifically, as shown in Figure 32A, when the ISOFIX connection assembly N200 is in use (i.e., deployed), the engaging portion N210 and the connecting portion N220 are located outside the mounting portion N230 and extend from the side of the bottom support member N120, wherein "inside" refers to the direction from the mounting portion N230 toward the centerline of the bottom support member N120, and "outside" refers to the direction from the mounting portion N230 toward the edge of the bottom support member N120, i.e., opposite to "inside". As shown in FIG33A , when the ISOFIX connection assembly is not in use, the connecting portion N220 can be pivoted relative to the mounting portion N230, for example, by 180 degrees, so that the connecting portion N220 and the engaging portion N210 are located inside the mounting portion N230. In other words, the connecting portion N220 is rotated to the opposite direction from that in use. In this state, the ISOFIX connection assembly N200 is in a stowed state.In one example, the mounting portion N230 is further provided with a second locking portion N233, which is configured to engage with a locking member N242 to lock the connecting portion N220 of the ISOFIX connector assembly N200 in its stowed state. A third locking portion N233 is provided on opposite sides of the first locking portion N231 and the second locking portion N232. For example, in this embodiment, the first and second locking portions N231 and N232 are provided on the side of the mounting portion N230 that is closer to the backrest of the vehicle seat N600 (i.e., the side where the engaging portion N210 extends outward from the housing N100), while the third locking portion N233 is provided on the opposite side, i.e., further away from the backrest of the vehicle seat N600. Furthermore, as shown in Figures 33A and 33B, the housing N100 is also provided with a component storage slot N121 that provides storage space for the ISOFIX connector assembly N200. In one example, the component receiving groove N121 can be provided on the bottom support member N120. Specifically, the component receiving groove N121 can be located in the center of the bottom support member N120, for example, between the reinforcement bracket N300 and the mounting portion N230. The second locking portion N233 can be provided corresponding to the component receiving groove N121, for example, in the center of the side of the mounting portion N230 facing away from the vehicle seat backrest. Alternatively, the component receiving groove N121 can be centrally located on the bottom side of the bottom support member N120 in the longitudinal direction ND1. The component receiving groove N121 can have a shape that matches the ISOFIX connection assembly. When the ISOFIX connection assembly is not in use, the connecting portion N220 and its connected engaging portion N210 can pivot relative to the mounting portion N230 and simultaneously move along the mounting portion N230 to the location of the second locking portion N233, causing the locking member N242 to engage with the third locking portion N233 to lock the connecting portion N220. At this point, the ISOFIX connection assembly can be accommodated in the component storage recess N121, achieving storage. The stored state of the ISOFIX connection assembly is shown in Figure 34. In addition to the aforementioned storage structure for the ISOFIX connection assembly, the case N100 of the present disclosure can also be provided with a storage and securing structure for the securing strap assembly N500. For example, as shown in FIG. 29 , a fixing belt storage groove N122 may be provided on the bottom support member N120 to provide space for storing the fixing belt assembly N500, so that the fixing belt assembly N500 can be stored while remaining connected to the box body N100 and prevent the fixing belt assembly N500 from being scattered around the box body N100.In one example, the strap storage slot N122 is located on the side of the bottom support member N120 away from the backrest of the vehicle seat N600. Referring to FIG34 , the vehicle N1 may also be provided with a storage cover N1021 for closing the strap storage slot N122. Specifically, the storage cover N1021 is detachably connected to the bottom cover N102, which covers the outside of the bottom support member N120, for example, via a zipper structure, Velcro, hook-and-loop assembly, or the like. Alternatively, the storage cover N1021 may be a portion of the bottom cover N102, with at least a portion detachably connected to other portions of the bottom cover N102, but the present disclosure is not limited thereto. Furthermore, as shown in Figure 30 , the bottom support member N120± may also be provided with a strap securing structure N330 for connecting at least a portion of the securing strap assembly N500 to the bottom support member N120±. The strap securing structure N330 is positioned on a side of the bottom support member N120 distal from the vehicle seat backrest. Specifically, it may be located at the edge of that side or at an extension N321 of the second reinforcing rod N320. The first connecting end N502 of the securing strap assembly N500 may be connected to the strap securing structure N330 to prevent the securing strap assembly N500 (e.g., the second strap N520) from accidentally detaching from the box N100±, further enhancing the stability and securement of the carrier N1 to the vehicle seat. Optionally, the extension N321 matches the structure at the edge of the bottom support member N120, allowing the belt securing structure N330 located on the extension N321 to be closer to, or even abut, the side of the bottom support member N120, thereby further stabilizing the overall structure of the bottom support member N120 and the positional retention of the securing strap assembly. In one example, the belt securing structure N330 may include a fixing seat N331 and a fixing pin N332. The fixing seat N331 is located at or near the edge of the bottom support member N120 facing away from the vehicle seat back, or located on the extension N321 of the second reinforcing rod N320. The fixing pin N332 is disposed within the fixing seat N331 and spaced a distance from the bottom surface of the fixing seat N331, allowing the second connection end N502 of the securing strap assembly N500 to be wrapped around the fixing pin N332. In other examples, a corresponding connection structure may be provided at the second connection end N502 to connect with the belt fixing structure N330, but the present disclosure is not limited thereto. By providing the ISOFIX connection assembly of the present embodiment, multiple engaging portions can be simultaneously engaged when the vehicle compartment is connected and fixed to the vehicle seat. This eliminates the need to individually engage the multiple engaging portions, and once engaged, adjustment is not possible.This not only facilitates the connection and fixation of the carrier, but also provides a secure engagement that is not easily loosened. Furthermore, the ISOFIX connection assembly disclosed herein can be adapted to various vehicle seat positions through a movable (i.e., slidable) connection, improving ease of use and user experience. Furthermore, it can be pivoted and stored on the underside of the bottom support member, making it easy to operate. The ISOFIX connection assembly and the fixing belt assembly cooperate to secure the box to the vehicle seat, further ensuring the reliability and stability of the fixation, thereby better ensuring the safety of people or pets inside the box and preventing them from being injured in the event of a collision. Referring to Figures 35 to 37 , another embodiment of the present invention provides a carrier N1A. Specifically, Figures 35 to 37 respectively illustrate perspective views of the carrier N1A in different usage positions. Figure 35 shows the ISOFIX connection assembly N200A in right-side usage, Figure 36 shows the ISOFIX connection assembly N200A in left-side usage, and Figure 37 shows the ISOFIX connection assembly N200A in the middle position. Similar to the previous embodiment, the carrier N1A can also be secured to a vehicle seat, for example, in conjunction with the method of securing the carrier N1 to the vehicle seat N600 shown in Figure 28 . As shown in Figure 35 , the carrier N1A can include a box N100A that provides a space for children or pets to sit. The box body N100A includes a box body N110A and a bottom support member N120A, which is detachably connected to the box body N110A. In one example, the bottom support member N120A can be made of materials such as EPP, EPS, EPO, or a plastic sheet, but the present disclosure is not limited to this. The box body N110A can be covered with a body cover N101A, and the bottom support member N120A can be covered with a bottom cover N102A. The body cover N101A and the bottom cover N102A can each be made of at least one of fabric, plastic, or polyethylene, but the present disclosure is not limited to this. The body cover N101A and the bottom cover N102A can be made of the same material or a combination of materials, or different materials or combinations of materials. The body cover N101A and the bottom cover N102A are detachably connected to each other, for example, via a zipper, Velcro, hook-and-loop assembly, or the like. In one example, the body cover N101A may be partially detachably connected to the bottom cover N102A, that is, a portion of the body cover N101A is detachably connected to the bottom cover N102A. In another example, the body cover N101A may be entirely detachably connected to the bottom cover N102A, that is, the body cover N101A may be entirely detachable from the bottom cover N102A.In this embodiment, the carrier N100A may include an ISOFIX connection assembly N200A, which is configured to connect to the ISOFIX interface provided on the vehicle seat, thereby more stably and securely securing the case N100A to the vehicle seat. Specifically, the ISOFIX connection assembly N200A may be mounted on the bottom support member N120A of the case N100A, for example, on the side of the bottom support member N120A closest to the vehicle seat backrest. More specifically, the ISOFIX connection assembly N200A may be mounted on the underside of the bottom support member N120A, with at least a portion exposed to facilitate user operation. As shown in Figures 35 and 36 , similar to the previous embodiment, the ISOFIX connection assembly N200A in this embodiment may include a snap-fit ​​portion N210A, a connecting portion N220A, and a mounting portion N230A. The mounting portion N230A can be connected to the bottom support member N120A of the box body N100A, for example, fixedly disposed on the bottom side of the bottom support member N120A in a removable or non-removable manner. In one example, both ends of the mounting portion N230A can be secured to the bottom side of the bottom support member N120A via fasteners. Alternatively, the mounting portion N230A can be configured as a rod or tubular member, such as a metal tube, extending in the longitudinal direction ND3 of the box body N100A. The engaging portion N210A can be configured to be disposed on the side of the bottom support member N120A proximal to the vehicle seat backrest and extend outward from that side of the bottom support member N120A (e.g., from its bottom side) to engage with the vehicle seat's ISOFIX connector. In one example, at least two engaging portions N210A can be provided. For example, in this embodiment, two engaging portions N210A may be provided. The connecting portion N220A is connected between the engaging portion N210A and the mounting portion N230A and is capable of driving the engaging portion N210A to move relative to the mounting portion N230A. Specifically, one end of the connecting portion N220A is fixedly connected (i.e., non-movably relative to) the engaging portion N210A, while the other end is movably connected to the mounting portion N230A, enabling the engaging portion N210A to move relative to the mounting portion N230A, such as by sliding or rotating. For example, as shown in Figures 35 to 37, the connecting portion N220A is capable of moving relative to the mounting portion N230A along the longitudinal direction ND3 of the housing N100A, thereby enabling the engaging portion N210A to move to different positions within the housing N100A.In one example, the mounting portion N230A is offset from its centerline in the transverse direction ND4 toward the side closest to the vehicle seat back. This reduces the distance between the mounting portion N230A and the engaging portion N210A, and reduces the dimension of the connecting portion N220A in the transverse direction ND4. This improves the stability and operability of the connecting portion N220A while also reducing material costs. Unlike the previous embodiment, this embodiment does not include a locking device (such as the first locking portion N231 and the second locking portion N232 of the locking device N240 and their corresponding mating structures in the previous embodiment) that locks the engaging portion N210A in different use positions relative to the box N100A. This ensures that when the vehicle N1A is secured using the ISOFIX connection assembly N200A, the connecting portion N220A maintains a removable connection with the mounting portion N230A. Thus, through the movable connection between the connecting portion N220A and the mounting portion N230A, when the carrier N1A is secured to a vehicle seat, for example, when the K-fitting member N210A of the TSOFT X connector assembly N200A is connected to a corresponding interface on the vehicle seat, the engaging portion N210A and the connecting portion N220A are fixed relative to the vehicle seat. At this point, the user can adaptively adjust the position of the box N100A relative to the vehicle seat. For example, the user can push the box N100A, causing the box N100A and the mounting portion N230A fixed thereto to move relative to the connecting portion N220A along the longitudinal direction ND3, thereby adaptively moving it to a desired position. In this way, the carrier N1A can not only be secured to different positions on the vehicle seat, but also its specific position can be adaptively adjusted after being secured. Specifically, Figures 35 to 37 illustrate different usage positions of the ISOFIX connection assembly N200A relative to the box body N100A. For example, Figure 35 shows the ISOFIX connection assembly N200A (particularly its connecting portion N220A and engaging portion N210A) in the leftmost position, Figure 36 shows the ISOFIX connection assembly N200A in the rightmost position, and Figure 37 shows the ISOFIX connection assembly N200A in a position intermediate between the leftmost and rightmost positions. Of course, those skilled in the art will appreciate that, in addition to the central position shown in Figure 37, the ISOFIX connection assembly N200A, specifically its connecting portion N220A and engaging portion N210A, can also be in other intermediate positions between the leftmost and rightmost positions, but the present disclosure is not limited thereto. It should be noted that the aforementioned "left" and "right" refer to the orientations shown in Figures 35 to 37.Specifically, the position of the ISOFIX connection assembly N200A shown in FIG35 is similar to the position of the ISOFIX connection assembly N200 shown in FIG30 of the aforementioned embodiment when the vehicle N1 is in the "right-side use state." That is, it is suitable for use when the vehicle N1A is secured to a right-side vehicle seat, allowing the vehicle N1A to slide leftward for position adjustment without sliding to the right and causing a collision with the right vehicle door during travel. The position shown in FIG36 is similar to the position of the vehicle N1 shown in FIG29 of the aforementioned embodiment when it is in the "left-side use state." That is, it is suitable for use when the vehicle N1A is secured to a left-side vehicle seat, allowing the vehicle N1A to slide rightward for position adjustment without sliding to the left and causing a collision with the left vehicle door during travel. Further referring to FIG37 , similar to the aforementioned embodiment, the connection portion N220A of this embodiment may include a sliding member N221A and a connection component. The sliding member N221A is slidably connected to the mounting portion N230A. For example, it may be a sleeve (or tubular structure) that fits over the mounting portion N230A, allowing it to slide relative to the mounting portion N230A. A connecting member is connected between the engaging portion N210A and the sliding member N221A, so that movement of the sliding member N221A drives the engaging portion N210A to slide relative to the mounting portion N230A. In one example, the connecting member may include a synchronizer N222A and a connecting member N223A. The synchronizer N222A is connected between at least two engaging portions N210A to synchronize their movement. For example, in this embodiment, two engaging portions N210A may be provided, and both ends of the synchronizer N222A may be respectively connected to the "" end of each engaging portion N210A, wherein the other end of each engaging portion N210A opposite to the first end is respectively connected to the corresponding interface of the vehicle seat. The connecting member N223A may be provided between the synchronizer N222A and the sliding member N221A, for example, with its two ends respectively fixedly connected to the synchronizer N222A and the sliding member N221A. In one example, the connecting member N223A may be configured as two or more rods provided substantially in parallel between the synchronizer N222A and the sliding member N221A, with each rod having its two ends respectively connected to the synchronizer N222A and the sliding member N221A. Optionally, the connecting component (i.e., the synchronizer N222A and the connecting member N223A) may be an integrally formed structure.Alternatively or optionally, two or all of the sliding member N221A, synchronizing member N222A, and connecting member N223A may be integrally formed or may be separate structures fixedly connected to one another. Furthermore, the sliding member N221A can pivot relative to the mounting portion N230A. Specifically, Figure 38 shows a perspective bottom view of the mountain carrier N1A in a stowed state. With reference to Figures 37 and 38 , the connecting portion N220A of this embodiment can pivot relative to the mounting portion N230A to accommodate the ISOFIX connection assembly N200A. Accordingly, the box body N100A is provided with a component storage slot N121A, providing storage space for the ISOFIX connection assembly N200A. As shown in Figures 35 to 37, when the ISOFIX connection assembly N200A is in use, one end of the F-joint portion N210A that mates with the corresponding interface of the vehicle seat (i.e., the "other end" mentioned above) extends from one side of the bottom support member N120A, and the K-joint portion N210A and the connecting portion N220A are located outside the mounting portion N230A. Further referring to Figures 37 and 38 , when carrier N1A is no longer in use, connecting portion N220A can slide along mounting portion N230A, thereby moving engaging portion N210A to a position corresponding to component receiving slot N121A. Connecting portion N220A (and engaging portion N210A) then pivots relative to mounting portion N230A, for example, by 180 degrees, positioning engaging portion N210A and connecting portion N220A inside mounting portion N230A, thereby storing ISOFIX connector assembly N200A in component receiving slot N121A. In one example, component receiving slot N121A can be provided on bottom support member N120A, for example, on the bottom side of bottom support member N120A. It should be noted that while the component storage slot N121A shown in FIG37 is located in the middle portion of the bottom side of the bottom support member N120A (i.e., centrally located on the bottom side of the bottom support member N120A), the present disclosure is not limited to this. The component storage slot N121A may also be located at a position offset from the middle portion along the longitudinal direction ND3. As shown in FIG37 and FIG38 , the vehicle N1A of this embodiment is further provided with a locking mechanism N400A for retaining the ISOFIX connection assembly N200A in its stored state. Specifically, the locking mechanism N400A may be provided on the bottom support member N120A of the case N100A and is capable of locking the connection portion N220A to retain the ISOFIX connection assembly N200A in the component storage slot N121A.In one example, the locking mechanism N400A can be positioned at an edge of the component receiving slot N121A. Specifically, when the ISOFIX connection component N200A is received in the component receiving slot N121A (i.e., in the received state), the locking mechanism N400A can be positioned at an edge of the component receiving slot N121A near the synchronizer N222A, thereby locking the synchronizer N222A of the connecting portion N220A. However, it should be understood that the locking mechanism N400A of the present disclosure is not limited to the aforementioned position. The locking mechanism N400A can also be positioned near and lock the sliding member N221A and / or the connecting member N223A of the connecting portion N220A, or near and lock the engaging portion N210A, as long as the ISOFIX connection component N200A can be retained in the component receiving slot N121A. Further referring to Figures 39A and 39B , Figure 39A shows a partial enlarged view of section E shown in Figure 38 , and Figure 39B shows a partial cross-sectional view taken along line FF in Figure 39A , illustrating the specific structure of locking mechanism N400A. In this embodiment, locking mechanism N400A may include a connecting seat N410A and a locking member N420A. Connecting seat N410A may be fixedly mounted on bottom support member N120A. For example, the upper surface N411A of the connecting seat N410A may be provided with a mounting hole N412A, and a fastener such as a screw passes through the mounting hole N412A to connect with the bottom support member N120A, thereby fixing the connecting seat N410A to the bottom support member N120A. The locking member N420A is provided on a side of the connecting seat N410A close to the connecting portion N220A. For example, when the ISOFIX connection assembly is in the "storage state", the locking member N420A is located on the side surface of the connecting seat N410A close to the synchronizer N222A. In one example, as shown in FIG. 39B , the locking member N420A may be a locking buckle, for example, an undercut protruding from one side of the connecting seat N410A (i.e., the side close to the connecting portion N220A), which may be interference-fitted with the connecting portion N220A (specifically, the synchronizer N222A) to lock the ISOFIX connection assembly N200A. That is, The ISOFIX connection assembly N200A is locked in the assembly receiving slot N121A. When the ISOFIX connection assembly N200A is needed, its connecting portion N220A can be forcefully moved to rotate relative to the mounting portion N230A and pass over the locking buckle, thereby releasing the lock. Optionally, the locking buckle can be made of plastic, but the present disclosure is not limited thereto.In another example, the locking member N420A may also be a spring (not shown in the figure) protruding from one side of the connecting seat N410A. When the ISOFIX connection component N200A is stored (i.e., stored in the component storage groove N121A), at least a portion of the connecting portion N220A (such as the synchronizer N222A in this embodiment) can press against the spring plate to deform it, thereby passing over the spring plate and locking it between the spring plate and the bottom support member N120A. When the ISOFIX connection component N200A needs to be used, the synchronizer N222A can be forcibly pulled to pivot relative to the mounting portion N230A and leave the space between the spring plate and the bottom support member N120A, thereby releasing the lock. In addition, in another example, the locking member N420A can also be an elastic protrusion provided on the bottom support member (as shown in the figure), and a groove is correspondingly provided on the synchronizer N222A. The ISOFIX connection component N200A is locked by the cooperation between the elastic protrusion and the groove. It should be understood that the positions of the protrusion and the groove in this example can be interchanged. Of course, the locking member N420A disclosed in the present invention is not limited to the above-mentioned structure, and it may also have other hard or soft structures, as long as it can achieve the limitation and / or locking of the ISOFIX connection component N200A (for example, its connection portion N220A). Figure 40 shows another three-dimensional bottom view of the carrier N1A shown in Figure 38. In order to more clearly show the structure in the bottom support member N120A, the bottom cover N102A is removed here. Specifically, the ISOFIX connection component N200A and the fixing belt assembly N500A of the carrier N1A shown in Figure 40 are both in a stored state. Figure 41A shows another three-dimensional bottom view of the carrier N1A, in which the ISOFIX connection component N200A and the fixing belt assembly N500A are both in use (i.e., unfolded state), and Figure 41B shows a partial cross-sectional view taken along line GG in Figure 41A. With reference to Figures 40 and 41A, The carrier N1A may include a securing strap assembly N500A. At least a portion of the securing strap assembly N500A may be detachably or non-detachably fixedly connected to the box N100A or an ISOFIX connection assembly N200A disposed at the bottom of the box N100A, for securing the box N100A to the vehicle seat. That is, at least a portion of the securing strap assembly N500A remains connected to the box N100A both when not in use and when in use.Specifically, the fixing belt assembly N500A may include a belt body composed of a first belt N510A and a second belt N520A, and a first connection end N501A and a second connection end N502A. The first end of the first belt N510A constitutes the first connection end N501A of the fixing belt assembly N500A and is provided with a first connection device, such as a Top Tether connection device, for connecting to a top anchor point on a vehicle seat or a corresponding anchor point above the vehicle seat. The other end of the first strap N510A is connected to one end of the second strap N520A, and the other end of the second strap N520A constitutes a second connection end N502A and is fixedly connected to the box N100A or the ISOFIX connection component N200A. Optionally, the fixing strap component N500A can be provided with two second connection ends N502A. In addition, the second strap N520A of this embodiment can have a similar structure to the previous embodiment, and the fixing strap component N500A can also be provided with a length adjuster N530A similar to the previous embodiment, which will not be repeated here. Unlike the embodiment shown in Figures 28 to 30 above, in this embodiment, the two second connection ends N502A of the securing strap assembly N500A can be connected to the mounting portion N230A of the ISOFIX connecting assembly N200A. The strap then wraps around the side of the bottom support member N120A opposite the engaging portion N210A to the top of the box body N100A. It then connects to the vehicle or vehicle seat above the box body N100A via the first connection end N501A, thereby securing the box body N100A to the vehicle seat. As can be seen in conjunction with Figures 35, 36, and 41A, the connection points of the two second connection ends N502A to the mounting portion N230A are located outside the sliding travel of the sliding member N221A of the connecting member N220A relative to the mounting portion N230A, thereby preventing interference between the securing strap assembly N500A and the sliding member N221A. For example, the two connection locations can be symmetrically located outside of the two ends of the sliding stroke. In one example, limiters (not shown) can be provided at both ends of the mounting portion N230A to limit the connection portion N220A, thereby preventing the connection portion N220 from interfering with the fixing strap assembly N500A and from separating from the mounting portion N230A. Specifically, the limiter can be located between the second connection end N502A of the fixing strap assembly N500A and the connection portion N220A.As shown in Figures 40 and 41A, the vehicle N1A may also be provided with a strap storage slot N122A, which provides space for storing the strap assembly N500A. This allows the strap assembly N500A to be stored while remaining connected to the ISOFIX connection assembly N200A, preventing the strap assembly N500A from being scattered around the box N100A. In one example, the strap storage slot N122A may be located on a side of the bottom support member N120A away from the vehicle seat backrest. Furthermore, referring to Figures 38 and 40, the vehicle N1A may also be provided with a storage cover N1021A for closing the strap storage slot N122A. Optionally, the storage cover N1021A may be removably connected to the bottom cover member N102A that covers the bottom support member N120A, or may be at least a portion of the bottom cover member N102A and removably connected to another portion of the bottom cover member N102A. The aforementioned detachable connection may employ a zipper structure, Velcro, hook-and-loop assembly, or the like, but the present disclosure is not limited thereto. In this example, the strap receiving slot N122A may be centrally located on the side of the bottom support member N120A facing away from the vehicle seat backrest, but the present disclosure is not limited thereto. It may also be located elsewhere on the bottom support member N120A that does not interfere with the component receiving slot N121A. As shown in FIG40 , when the strap assembly N500A is no longer needed to secure the case N100A, the first connecting end N501A of the strap assembly N500A and a portion of the strap connected thereto may be stored in the strap receiving slot N122A, while the second connecting end N502A of the strap assembly N500A remains connected to the ISOFIX connector assembly N200A. In a specific example, the first connection end N501A, the first strap N510A, and optionally a portion of the second strap N520A are received in the fixed strap receiving slot N122A. Referring to Figures 41A and 41B , the case N100A may also be provided with support legs N123A. The support legs N123A may be provided on the bottom side of the bottom support member N120A to support the case N100A. In an example, as shown in Figure 41A , the support legs N123A may be provided at both ends of the bottom support member N120A along the longitudinal direction ND3. Specifically, the bottom support member N120A may be provided with a recessed structure for mounting the TSOFT X connector assembly N200A, particularly its mounting portion N230A. The support legs N123A are positioned above at least a portion of the recessed structure to constrain both ends of the mounting portion N230A within the recessed structure.In this embodiment, as shown in FIG41B , the support leg N123A can be secured to the bottom support member N120A via fasteners. Optionally, a fastener located at one end of the support leg N123A can be sequentially passed through the end of the support leg N123A and one end of the mounting portion N230A, thereby securing the support leg N123A and the mounting portion N230A to the bottom support member N120A. However, this disclosure is not limited to this embodiment; the support leg N123A and / or the ISOFIX connection assembly N200A can also be secured using other methods. By employing the ISOFIX connection assembly of the disclosed embodiment, the vehicle box can be secured to different positions of the vehicle seat without having to individually engage multiple engaging portions. Furthermore, after securing the box, its longitudinal position can be adaptively adjusted, improving ease of use and user experience. Furthermore, the ISOFIX connection assembly of the disclosed embodiment can be adapted to various vehicle seat positions through a movable (i.e., sliding) connection and can be stored under the bottom support member by pivoting. This facilitates operation, saves storage space, and prevents the ISOFIX connection assembly's engaging portion from colliding with people or other vehicle structures when the case is lifted alone, thereby improving safety. Furthermore, the ISOFIX connection assembly and the securing strap assembly used in the disclosed embodiment secure the case to the vehicle seat, further ensuring the reliability and stability of the securement, thereby better ensuring the safety of people or pets within the case and preventing injury in the event of a collision. It should be noted that the structures of the two aforementioned embodiments of the disclosed embodiment can be combined or interchanged. For example, if the structures do not conflict, the embodiment shown in FIG. 29 can include a locking mechanism, and the embodiment shown in FIG. 35 can also include a reinforcement bracket. The disclosed embodiment is not limited to these structures. The technical features of the above-described embodiments may be combined in any manner. For the sake of brevity, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as no conflicts exist between these combinations of technical features, they should be considered within the scope of this specification. The above-described embodiments merely represent several implementation methods of the present disclosure. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the disclosed patent. It should be noted that those skilled in the art may make various modifications and improvements without departing from the spirit of the present disclosure, and these modifications and improvements are all within the scope of protection of the present disclosure. Therefore, the scope of protection of the present patent shall be determined by the appended claims.

Claims

Claims 1. A fixing belt assembly for fixing a carrier to a vehicle seat, characterized in that: The carrier includes a box body and a bottom support member, the bottom support member is detachably connected to the box body and is arranged below the box body, the fixing belt assembly is configured to be connected to the carrier, and at least a portion of the fixing belt assembly can be stored in the storage space of the carrier.

2. The fixing belt assembly according to claim 1, characterized in that: The fixing belt assembly includes: a first belt assembly, at least a portion of which is wound from a side of the carrier away from the backrest of the vehicle seat to the bottom of the carrier, and one end of the first belt assembly is provided with a second connecting device, and the first connecting device is connected to the top of the vehicle seat; a second belt assembly is provided at the bottom of the carrier, one end of the second belt assembly is connected to the other end of the first belt assembly, the other end of the second belt assembly is provided with a second connecting device, and the second connecting device is connected to the vehicle seat, so as to fix the carrier to the vehicle seat.

3. The fixing belt assembly according to claim 2, characterized in that: A fixing belt limiting structure is disposed on the bottom support member, and the fixing belt limiting structure is configured to position the fixing belt assembly so that the fixing belt assembly is at least partially connected to the carrier.

4. The fixing belt assembly according to claim 3, characterized in that: The carrier further includes: a reinforcing bracket, arranged on the bottom side of the bottom support member, wherein the fixing belt limiting structure is arranged on the reinforcing bracket.

5. The fixing belt assembly according to claim 3, characterized in that: The fixing belt limiting structure includes two first limiting structures and two second limiting structures, and the distance between the two second limiting structures is greater than or equal to the distance between the two first limiting structures.

6. The fixing belt assembly according to claim 3, characterized in that: The fixing belt limiting structure includes: a first tubular structure, which has a length extending only along the longitudinal axis of the bottom support member; a second tubular structure, which is arranged to intersect with the first tubular structure; wherein the first tubular structure, or the second tubular structure, or the first tubular structure 69 A penetration gap is formed between the structure and the second tubular structure for the fixing belt assembly to pass through.

7. The fixing belt assembly according to claim 6, characterized in that: The first tubular structure is arranged approximately perpendicular to the second tubular structure; or at least a portion of the second tubular structure is inclined relative to the longitudinal and transverse directions of the carrier, so that the distance between the first ends of the two second tubular structures of the two fixed belt limiting structures is smaller than the distance between the second ends of the two second tubular structures.

8. A vehicle, characterized in that: The carrier comprises: a fixing belt assembly according to any one of claims 1 to 7.

9. A connecting and fixing device for fixing a carrier to a vehicle seat, characterized in that: The connecting and fixing device comprises: a first belt connecting component and a second belt connecting component, one end of the first belt connecting component constitutes the first connecting end of the connecting and fixing device, the other end of the first belt connecting component is connected to one end of the second belt connecting component, and the other end of the second belt connecting component constitutes the second connecting end of the connecting and fixing device, the first connecting end is connected to a first anchoring point, at least a part of the connecting and fixing device is arranged around a side of the carrier away from the backrest of the vehicle seat to the bottom of the carrier, so that the second connecting end is connected to the second anchoring point; a buffer structure is arranged on the connecting and fixing device.

10. The connection and fixing device according to claim 9, characterized in that: The buffer structure comprises at least one buffer belt, and two ends of the at least one buffer belt are connected to the connecting and fixing device through a first fixing member and a second fixing member respectively.

11. The connecting and fixing device according to claim 10, characterized in that: An initial effective length of the buffer belt between the first fixing member and the second fixing member is smaller than an initial effective length of the connecting and fixing device between the first fixing member and the second fixing member.

12. The connecting and fixing device according to claim 10 or 11, characterized in that: The elongation of the buffer belt is greater than the elongation of the connecting and fixing device provided with the buffer belt.

13. The connection and fixing device according to claim 10 or 11, characterized in that: ", the buffer structure includes at least one first knotting point, and the at least one first knotting point is arranged on the connection and fixing device and is located between the first fixing member and the second fixing member.

14. The connecting and fixing device according to claim 10 or 11, characterized in that: The buffer belt is provided with at least one second knotting point, 70 Wherein, when the at least one second knotting point is released, the effective buffering length of the buffer belt between the first fixing member and the second fixing member is greater than the effective length of the connecting and fixing device between the first fixing member and the second fixing member, and the elongation of the buffer belt is less than the elongation of the connecting and fixing device provided with the buffer belt.

15. A connecting and fixing device for fixing a carrier to a vehicle seat, characterized in that: The connecting and fixing device has a first connecting end and a second connecting end respectively connected to a first anchor point and a second anchor point, at least a portion of the connecting and fixing device is arranged around a side of the carrier away from the backrest of the vehicle seat, the connecting and fixing device includes a first belt connecting component and a second belt connecting component which are detachably connected to each other, the first belt connecting component includes a first belt structure and a second belt structure, wherein the first belt structure and the second belt structure are used interchangeably and are detachably connected to the second belt connecting component, and wherein the first belt structure and the second belt structure have different elongation rates.

16. The connecting and fixing device according to claim 15, characterized in that: The first belt structure includes a first belt body and a first end and a second end respectively located at two ends of the first belt body; when the first belt structure is connected to the second belt connecting component, the first end of the first belt structure constitutes the first connecting end of the connecting and fixing device, and the second end is detachably connected to the second belt connecting component; the second belt structure includes a second belt body and a first end and a second end respectively located at two ends of the second belt body; when the second belt structure is connected to the second belt connecting component, the first end of the second belt structure constitutes the first connecting end of the connecting and fixing device, and the second end is detachably connected to the second belt connecting component; and the second end of the second belt connecting component constitutes the second connecting end.

17. The connecting and fixing device according to claim 15, characterized in that: The elongation rate of the first belt structure is greater than that of the second belt structure, and when the first anchor point is closer to the carrier, the first belt structure is connected to the second belt connection assembly; And when the first anchoring point is far away from the carrier, the second belt structure is connected to the second belt connection assembly.

18. The connecting and fixing device according to any one of claims 15 to 17, characterized in that , 71 A buffer structure is disposed on at least one of the first belt structure, the second belt structure and the second belt connection assembly.

19. A carrier, characterized in that: The carrier is fixed to the vehicle seat by means of a connection fixing device according to any one of claims 9 to 18.

20. An ISOFIX connection assembly for fixing a box of a carrier to a vehicle seat, characterized in that: The ISOFIX connection assembly includes: a clamping portion connected to the ISOFIX interface provided on the vehicle seat; a mounting portion fixedly connected to the box body; and a connecting portion fixedly connected to the clamping portion and movably connected to the mounting portion to drive the clamping portion to move relative to the mounting portion.

21. The ISOFIX connection assembly according to claim 20, characterized in that: The connecting portion includes: a sliding member slidably pivoted to the mounting portion; and a connecting component connected between the engaging portion and the sliding member to drive the engaging portion to slide and / or pivot relative to the mounting portion.

22. The ISOFIX connection assembly according to claim 21, characterized in that: The ISOFIX connection assembly is provided with at least two engaging parts; and the connecting component comprises: a synchronizing member connecting the at least two engaging parts together so that the at least two engaging parts move synchronously; and a connecting member connected between the synchronizing member and the sliding member.

23. The ISOFIX connection assembly according to any one of claims 20 to 22, characterized in that: The ISOFIX connection assembly further includes: a locking device, disposed between the connection portion and the mounting portion, for locking the connection portion to the mounting portion and releasing the connection portion from the mounting portion.

24. The ISOFIX connection assembly according to claim 20, characterized in that: The mounting portion is provided with a locking portion, the locking portion comprising a first locking portion and a second locking portion, the first locking portion and the second locking portion being respectively arranged at different positions of the mounting portion along the longitudinal direction of the box body, so as to be able to lock the connecting portion relative to the mounting portion to different positions. 72 Location.

25. The ISOFIX connection assembly according to claim 24, characterized in that: The connecting portion is capable of pivoting relative to the mounting portion so that the connecting portion and the engaging portion are received in the box body, and the locking device further includes a locking piece capable of cooperating with the locking portion, and the locking portion further includes a third locking portion, which is arranged on opposite sides of the first locking portion and the second locking portion and is used for engaging with the locking piece to lock the received connecting portion.

26. The ISOFIX connection assembly according to any one of claims 20 to 22, characterized in that: The connecting portion can pivot relative to the mounting portion so that the connecting portion and the K-joint portion are received in the box body, and a locking mechanism is provided on the box body for locking the connecting portion received in the box body.

27. A carrier, characterized in that: The carrier comprises: a box body, providing an accommodating space, and comprising: a box body; a bottom support member, detachably connected to the box body, wherein the TSOFTX connection component according to any one of claims 20 to 26 is arranged on the bottom support member.

28. The carrier according to claim 27, characterized in that: The bottom support member is provided with a component storage groove, and the component storage groove provides a storage space for storing the ISOFIX connection component.

29. The carrier according to claim 28, characterized in that: The bottom support member is provided with a locking mechanism, and when the ISOFIX connection assembly is received in the assembly receiving groove, the locking mechanism locks the connection portion of the ISOFIX connection assembly to keep the ISOFIX connection assembly in the assembly receiving groove.

30. The carrier according to claim 27, characterized in that: The carrier also includes a fixing belt assembly, which is connected to the box to fix the box to the vehicle seat and includes a belt body, a first connection end and a second connection end, the belt body is located between the first connection end and the second connection end, the first connection end is connected to the vehicle seat, at least a portion of the belt body is wrapped around the side of the box away from the backrest of the vehicle seat, and the second connection end is connected to the bottom support or the 73 ISOFIX connection components.

31. The carrier according to claim 30, characterized in that The bottom support is provided with a belt fixing structure for connecting at least a portion of the fixing belt assembly to the bottom support, the belt fixing structure is arranged on a side of the bottom support away from the backrest of the vehicle seat, and the second connecting end of the fixing belt assembly is connected to the belt fixing structure. 74

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