Carrier

Abstract

The utility model relates to a carrier which comprises a bottom supporting mechanism and a bearing device, and the bottom supporting mechanism comprises a mounting seat extending in the left-right direction and a supporting seat arranged on the mounting seat; the bearing device comprises a seat, the seat is connected with the supporting seat in a relatively rotating mode around a seat rotating shaft, and the seat rotating shaft extends in the left-right direction and is arranged at the position, close to one end of the supporting seat in the front-back direction, of the supporting seat. When the carrier is folded, the seat is overturned around the seat rotating shaft and is drawn close to the bottom supporting mechanism to be folded, so that the bearing device does not need to be detached to be independently folded and stored, the problem that the bearing device is folded along with the bottom supporting mechanism to be too large in size and inconvenient to store is solved, and convenience is brought to daily use of a user.

Description

TECHNICAL FIELD

[0001] The utility model relates to a carrier. BACKGROUND

[0002] In the prior art, the seat pocket of some carriers such as a stroller can be used in reverse, so that the direction faced by a child sitting in the seat pocket can be switched. The seat pocket can usually be mounted on a support of the carrier in a detachable manner, and its orientation can be changed by mounting it in a forward direction or a reverse direction. However, this requires the child to be transferred out of the seat pocket before the operation, which is relatively cumbersome. To avoid the need to transfer the child out, some carriers are provided with a rotating shaft installed at the bottom of the seat of the seat pocket, so that the seat pocket device can be rotated around the rotating shaft to change the orientation. However, this structure makes it impossible for the seat pocket to be effectively folded with the support of the carrier when the carrier is folded, and the seat pocket needs to be detached and folded separately, which leads to relatively cumbersome folding and storage operations and causes inconvenience in use. SUMMARY

[0003] The utility model aims at providing a carrier to solve one or more problems in the prior art.

[0004] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of:

[0005] A carrier has an unfolded state and a folded state, and comprises:

[0006] A bottom support mechanism comprises a mounting seat extending in a left-right direction and a support seat arranged on the mounting seat;

[0007] A carrying device comprises a seat, the seat is rotatably connected to the support seat around a seat rotating shaft, the seat rotating shaft extends in the left-right direction, and the seat rotating shaft is arranged at a position close to one end of the support seat in the front-rear direction;

[0008] When the carrier is folded, the seat is flipped around the seat rotating shaft and folded towards the bottom support mechanism.

[0009] In some embodiments, the support seat is rotatably mounted on the mounting seat around a support seat rotating shaft, and the support seat rotating shaft extends in a vertical direction.

[0010] In some embodiments, the carrier further comprises a locking structure for locking the seat to the support seat, and the locking structure is arranged at a position close to the other end of the support seat in the front-rear direction.

[0011] In some embodiments, the locking structure comprises a locking slot and a locking member, the locking slot is provided on one of the seat and the support base, and the locking member is movably provided on the other one of the seat and the support base.

[0012] In some embodiments, the seat has a first end and a second end respectively provided at two different ends along a length direction of the seat, the first end is rotatably connected with one end of the support base about the seat rotation axis, and the second end is detachably provided with the support base, and the locking structure is provided between the second end and the other end of the support base.

[0013] In some embodiments, the locking member is movably provided on the second end, the locking slot is provided on the support base, and a releasing member is movably provided on the second end and connected with the locking member to drive the locking member to move out of engagement with the locking slot.

[0014] In some embodiments, the bottom support mechanism comprises a first support and a second support, an upper portion of the first support is rotatably connected with an upper portion of the second support, the mounting base is fixedly provided on the upper portion of the first support, and in the folded state of the carrier, the first support and the second support are folded towards each other, and the seat is folded towards the first support or the second support.

[0015] In some embodiments, the carrier further comprises a backrest, the backrest is rotatably connected with the seat, and in the folded state of the carrier, the backrest is folded on one side of the seat, and the bottom support mechanism is folded on the other side of the seat.

[0016] In some embodiments, the carrier further comprises a push rod holder, a lower portion of the push rod holder is rotatably connected with the support base, and in the folded state of the carrier, the push rod holder is flipped forward or backward to be folded with the bottom support mechanism.

[0017] In some embodiments, the carrier is a stroller, the bottom support mechanism comprises a first support and a second support, an upper portion of the first support is rotatably connected with an upper portion of the second support, a lower portion of the first support is provided with a first wheel assembly, and a lower portion of the second support is provided with a second wheel assembly, and the mounting base is fixedly provided on the upper portion of the first support.

[0018] By means of the technical scheme, the utility model has the following advantages compared with the prior art: the carrier provided by the utility model, wherein the seat can rotate relative to the support seat and be folded together with the bottom support mechanism along the front-back direction, so that the carrier does not need to be disassembled and folded for storage, and the problem of too large volume for storage caused by folding the carrier together with the bottom support mechanism is avoided, which brings convenience for daily use of users. BRIEF DESCRIPTION OF DRAWINGS

[0019] BRIEF DESCRIPTION OF DRAWINGS Figure 1 It is a perspective structural schematic view of the carrier in an unfolded state according to an embodiment of the utility model, wherein the carrier device is in a forward position.

[0020] BRIEF DESCRIPTION OF DRAWINGS Figure 2 It is a perspective structural schematic view of the carrier in an unfolded state according to an embodiment of the utility model, wherein the carrier device is in a forward position. Figure 1

[0021] BRIEF DESCRIPTION OF DRAWINGS Figure 3 It is a perspective structural schematic view of the carrier in an unfolded state according to an embodiment of the utility model, wherein the carrier device is in a forward position. Figure 1

[0022] BRIEF DESCRIPTION OF DRAWINGS Figure 4 It is a perspective structural schematic view of the carrier in an unfolded state according to an embodiment of the utility model, wherein the carrier device is in a forward position. Figure 3

[0023] BRIEF DESCRIPTION OF DRAWINGS Figure 5 It is a perspective structural schematic view of the carrier in an unfolded state according to an embodiment of the utility model, wherein the carrier device is in a forward position. Figure 1

[0024] BRIEF DESCRIPTION OF DRAWINGS Figure 6 It is a perspective structural schematic view of the carrier in an unfolded state according to an embodiment of the utility model, wherein the carrier device is in a forward position. Figure 1 Figure 1 BRIEF DESCRIPTION OF DRAWINGS

[0025] It is a perspective structural schematic view of the carrier in an unfolded state according to an embodiment of the utility model, wherein the carrier device is in a forward position. Figure 7 Figure 1 Figure 2 BRIEF DESCRIPTION OF DRAWINGS

[0026] BRIEF DESCRIPTION OF DRAWINGS Figure 8 It is a perspective structural schematic view of the carrier in an unfolded state according to an embodiment of the utility model, wherein the carrier device is in a forward position. Figure 1

[0027] BRIEF DESCRIPTION OF DRAWINGS Figure 9 It is a perspective structural schematic view of the carrier in an unfolded state according to an embodiment of the utility model, wherein the carrier device is in a forward position. Figure 8

[0028] BRIEF DESCRIPTION OF DRAWINGS Figure 10 It is a perspective structural schematic view of the carrier in an unfolded state according to an embodiment of the utility model, wherein the carrier device is in a forward position. Figure 8

[0029] BRIEF DESCRIPTION OF DRAWINGS Figure 11 It is a perspective structural schematic view of the carrier in an unfolded state according to an embodiment of the utility model, wherein the carrier device is in a forward position. Figure 10

[0030] ​​​​​​​​​​​​Figure 12 The side view structure schematic diagram of the carrier is shown in FIG. 2. Figure 1 The three-dimensional structure schematic diagram of the carrier in the folding process is shown in FIG. 3.

[0031] The side view structure schematic diagram of the carrier is shown in FIG. 4. Figure 13 The three-dimensional structure schematic diagram of the carrier in the folding process is shown in FIG. 5. Figure 12 The side view structure schematic diagram of the carrier is shown in FIG. 6.

[0032] The three-dimensional structure schematic diagram of the carrier in the folding process is shown in FIG. 7. Figure 14 The side view structure schematic diagram of the carrier is shown in FIG. 8. Figure 12 The three-dimensional structure schematic diagram of the carrier in the folding process is shown in FIG. 9.

[0033] The side view structure schematic diagram of the carrier is shown in FIG. 10. Figure 15 The three-dimensional structure schematic diagram of the carrier in the folding process is shown in FIG. 11. Figure 14 The side view structure schematic diagram of the carrier is shown in FIG. 12.

[0034] 100, bottom support mechanism; 200, bearing device; 201, unlocking piece;

[0035] 1, first support; 11, first support rod; 12, first cross rod;

[0036] 2, second support; 21, second support rod; 22, second cross rod;

[0037] 3, push rod holder; 31, lower push rod; 311, rod body; 312, connecting rod; 32, upper push rod; 33, push rod unlocking piece; 34, push rod locking joint;

[0038] 4, mounting seat;

[0039] 5, support seat; 51, support seat rotating shaft; 6, seat; 61, avoiding groove; 62, seat rotating shaft; 6A, first end portion; 6B, second end portion; 7, backrest; 8, bracket; 9, armrest holder;

[0040] 10, first wheel assembly; 20, second wheel assembly; X0, rotating center line; X1, first center line; X2, second center line; X3, third center line. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings, so that the advantages and characteristics of the present application are easier for those skilled in the art to understand. Obviously, the embodiments described in the present application are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0042] The following descriptions about up, down, left, right, front, back and the like related to the orientation are defined according to the orientation observed when the carrier is in the unfolded state and the occupant sits on the carrying device with the face facing the running direction, and the purpose is only to clearly illustrate the relative position relationship of each component on the carrier.

[0043] Referring to Figures 1 to 15 A carrier shown in the drawings has an unfolded state and a folded state, the carrier includes a bottom support mechanism 100 and a carrying device 200, the bottom support mechanism 100 includes a mounting seat 4 extending in the left-right direction and a support seat 5 arranged on the mounting seat 4, and the carrying device 200 includes a seat 6, the seat 6 is rotatably connected to the support seat 5 around a seat rotating shaft 62, the seat rotating shaft 62 extends in the left-right direction, and the seat rotating shaft 62 is arranged at a position close to one end of the support seat 5 in the front-back direction. When the carrier is folded, the seat 6 is folded by turning around the seat rotating shaft 62 to close to the bottom support mechanism 100, so that the carrying device 200 is folded on the front side or the rear side of the bottom support mechanism 100.

[0044] In the carrier, the support seat 5 is rotatably mounted on the mounting seat 4 around a support seat rotating shaft 51, the support seat rotating shaft 51 extends in the vertical direction, and the carrying device 200 and the support seat 5 can rotate together around the support seat rotating shaft 51 to change the orientation of the seat 6. In this embodiment, referring to Figure 5 , the support seat rotating shaft 51 extends vertically downward from the bottom of the support seat 5, the mounting seat 4 has a mounting hole capable of cooperating with the insertion of the support seat rotating shaft 51, and the axis of the support seat rotating shaft 51 constitutes a first center line X1.

[0045] In the carrier, the seat 6 extends in the horizontal direction and has a first end 6A and a second end 6B arranged at different ends in the length direction of the seat 6, the first end 6A is rotatably connected to one end of the support seat 5 through the seat rotating shaft 51, and the axis of the seat rotating shaft 51 is a second center line X2. When the carrying device 200 is fixed to the bottom support mechanism 100 for carrying a child, the second center line X2 extends in the left-right direction. The second end 6B is arranged to be separable from the support seat 5.

[0046] In the unfolded state of the carrier, the second end 6B of the seat 6 is supported on the support seat 5 and fixed relative to the support seat 5, the carrying device 200 and the support seat 5 rotate together around the first center line X1, so that the orientation of the seat 6 is changed, as shown in Figure 1 , Figure 2 , the carrying device 200 is in the forward position, and as shown in Figure 3 , Figure 4 , the carrying device 200 is in the reverse position.

[0047] When the carrier is folded, the second end 6B of the seat 6 can be separated from the support seat 5, and the seat 6 can be rotated relative to the support seat 5 about the second center line X2, so that the seat 6 is converted to extend in the up-down direction and is folded with the bottom support mechanism 100 in the front-back direction, so that the carrying device 200 can be folded with the bottom support mechanism 100 to reduce the overall height of the carrier after folding.

[0048] The carrier also includes a locking structure (not shown in the figure) for locking the seat 6 to the support seat 5, which is arranged at a position of the support seat 5 close to the other end in the front-back direction. The locking structure specifically includes a locking slot and a locking piece that cooperates with the locking slot, the locking slot is arranged on one of the seat 6 and the support seat 5, and the locking piece is movably arranged on the other one of the seat 6 and the support seat 5. In this embodiment, the locking piece is movably arranged on the second end 6B, and the locking slot is arranged on the support seat 5. When the locking piece cooperates with the locking slot, the second end 6B is fixed relative to the support seat 5, and when the locking piece is separated from the locking slot, the seat 6 can be driven to rotate relative to the support seat 5 about the second center line X2 to separate the second end 6B from the support seat 5. Specifically, the locking piece can be rotatably or movably arranged on the second end 6B, and when the second end 6B moves relative to the second end 6B, the locking piece is separated from the locking slot or cooperates with the locking slot, and the unlocking and locking of the locking structure are realized accordingly.

[0049] Referring to the drawings, in this embodiment, the bottom support mechanism 100 is foldably arranged, which includes the first support 1 and the second support 2, the upper part of the first support 1 and the upper part of the second support 2 are rotatably connected about the rotation center line X0, which extends in the left-right direction; the mounting seat 4 is fixedly arranged on the upper part of the first support 1. When the carrier is unfolded, the first support 1 and the second support 2 are relatively unfolded, the carrying device 200 is located above the bottom support mechanism 100 as a whole, and the seat 6 can provide relatively high sitting support; when the carrier is folded, the first support 1 and the second support 2 are rotated about the rotation center line X0 to be folded in the front-back direction, and the seat 6 is rotated relative to the support seat 5 about the second center line X2 to be folded with the first support 1 or the second support 2.

[0050] The rotation center line X0 and the second center line X2 are parallel to each other, and when arranged, the second center line X2 and the rotation center line X0 are arranged at a distance in the front-back direction. The first center line X1 is located between the first end 6A and the second end 6B, and the rotation center line X0 is coplanar with the first center line X1 and perpendicular to each other. When the carrying device 200 is in the forward position and in the reverse position, the center of gravity of the seat 6 on the bottom support mechanism 100 is basically unchanged, and after the change, the overall shape of the carrier is basically unchanged. When the seat 6 and other components on the carrying device 200 are folded with the first support 1 or the second support 2, the folding shape of the carrier is basically consistent.

[0051] As shown in the drawings, in the embodiment, the carrying device 200 further comprises a backrest 7, a bracket 8 and a handrail 9, the lower part of the backrest 7, one end of the seat 6 and one end of the handrail 9 are rotatably connected, the upper part of the bracket 8 and the other end of the seat 6 are rotatably connected, wherein the handrail 9 is a U-shaped frame with an opening facing backward, the bracket 8 mainly provides support for the feet of the occupant, and the upper surface of the seat 6 gradually inclines downward from the side where the bracket 8 is located to the side where the backrest 7 is located.

[0052] When the carrying device 200 is folded by itself, the backrest 7 is folded relative to the seat 6, so that the handrail 9 is folded between the backrest 7 and the seat 6, and the bracket 8 is folded relative to the seat 6 to extend along the same length direction as the seat 6, so that the two are overlapped with the backrest 7 as much as possible in the length direction. In the embodiment, the total length of the folded carrying device 200 is substantially the same as the length of the backrest 7.

[0053] In the embodiment, when the carrier is in the folded state, the backrest 7 is folded on one side of the seat 6, and the bottom support mechanism 100 is folded on the other side of the seat 6, which makes the folded carrying device 200 be able to be folded on one side of the bottom support mechanism 100, and the back side of the backrest 7 is located at the outermost side of the folded carrier, so that the appearance of the carrier is more flat and easy to store, and some irregular parts of the carrying device 200 can be folded between the backrest 7 and the bottom support mechanism 100, saving space and improving the overall appearance and regularity of the folded carrier.

[0054] In the embodiment, the second end 6B of the seat 6 is further movably provided with an unlocking piece 201, which is connected with the above-mentioned locking piece to drive the locking piece to move away from the cooperation with the locking slot, thereby unlocking the locking structure. When arranged, in the carrying device 200, the lower part of the backrest 7, the second end 6B of the seat 6 and one end of the handrail 9 are provided with a seat locking mechanism for locking each other, and the unlocking piece 201 can also be configured to simultaneously unlock the seat locking mechanism. In other embodiments, the unlocking piece 201 can also be arranged at other positions on the carrying device 200.

[0055] As shown in the drawings, in the embodiment, the carrier is a stroller, and the bottom support mechanism 100 further comprises a first wheel assembly 10 and a second wheel assembly 20. Specifically, the first wheel assembly 10 is arranged at the bottom of the first support 1, and the second wheel assembly 20 is arranged at the bottom of the second support 2.

[0056] Here, referring to Figure 5As shown, the first support 1 includes two first support rods 11 arranged on the left and right sides and extending in the up-down direction, a first cross rod 12 fixedly arranged between the upper portions of the two first support rods 11, and the mounting seat 4 fixedly arranged at the middle portion of the first cross rod 12 or integrally arranged with the first cross rod 12, thereby jointly forming a transverse mounting seat extending in the left-right direction; the lower portion of each group of first support rods 11 is provided with a first wheel assembly 10, which is specifically a universal wheel assembly and is arranged at the front side in the pushing direction; the second support 2 includes two second support rods 21 arranged on the left and right sides and extending in the up-down direction, and a second cross rod 22 fixedly arranged between the lower portions of the two second support rods 21; the lower portion of each second support rod 21 is provided with a group of second wheel assemblies 20, which are directional wheel assemblies and are arranged at the rear side in the pushing direction.

[0057] The carrier further includes a push rod frame 3, the lower portion of which is rotatably connected to the support seat 5, so that the bearing device 200, the support seat 5 and the push rod frame 3 can jointly rotate relative to the mounting seat 4 about the first center line X1 to realize the reversing of the seat 6. Here, specifically, the lower portion of the push rod frame 3 is rotatably connected to the support seat 5 about a third center line X3, which is parallel to the second center line X2.

[0058] In Figure 1 , Figure 2 the state shown, the bearing device 200 is in a forward position, the first end portion 6A of the seat 6 is in front and the second end portion 6B is in back, and a child sitting on the bearing device 200 faces forward with his back to the pusher; in the state shown in Figure 3 , Figure 4 the bearing device 200 is in a reverse position, the first end portion 6A of the seat 6 is in back and the second end portion 6B is in front, and a child sitting on the bearing device 200 faces backward with his face to the pusher.

[0059] In the reversing operation, the operator can first drive the push rod frame 3 to rotate the push rod frame 3 and the bearing device 200 as a whole relative to the mounting seat 4 about the first center line X1 to switch the orientation of the seat 6, and then drive the push rod frame 3 to flip forward and backward relative to the support seat 5 about the third center line X3 to switch the push rod frame 3 so that the pushing end of the upper portion thereof is converted to the same side as the second wheel assembly 20, i.e., located at the rear side of the carrier, so that the first wheel assembly 10 remains in front in the direction of travel of the stroller.

[0060] Referring to Figure 5As shown, in the embodiment, the push rod frame 3 comprises lower push rods 31 and an upper push rod 32, the lower push rods 31 are arranged on the left and right sides respectively, the upper push rod 32 is a U-shaped rod, the two ends of the upper push rod 32 are rotatably connected with the upper end portions of the two lower push rods 31 respectively, and the two rotatable connection portions are provided with a push rod locking joint 34 capable of locking the two ends, and the middle portion of the upper push rod 32 is provided with a push rod unlocking member 33 for unlocking the push rod locking joint 34; the lower push rod 31 comprises a rod body 311 and a connecting rod 312, the connecting rod 312 is bent inwardly and extends from the lower end of the rod body 311, and the push rod frame 3 is rotatably connected with the support seat 5 through the connecting rods 312 on the left and right sides, wherein the axis of the connecting rod 312 constitutes a third center line X3. The left and right sides of the seat 6 are also respectively provided with an avoiding slot 61, and the connecting rod 312 is rotatably inserted in the avoiding slot 61. The rotatable connection portion between the lower portion of the push rod frame 3 and the support seat 5 is also provided with a push rod locking member (not shown in the figure) for locking the two, and when the push rod locking member is unlocked, the push rod unlocking member 33 is operated.

[0061] When the carrier provided in the embodiment is folded, the push rod frame 3 can be flipped around the third center line X3 to the front side of the bottom support mechanism 100 or to the rear side of the bottom support mechanism 100 to be folded with the bottom support mechanism 100. In the folded state, the push rod frame 3 is folded on one side of the bottom support mechanism 100 or in the bottom support mechanism 100.

[0062] Specifically, referring to Figures 8 to 11 As shown, the carrier can be folded in the following manner: first, fold the bearing device 200 so that the backrest 7 is folded relative to the seat 6, and the bracket 9 is folded relative to the backrest 7; rotate the upper push rod 32 relative to the lower push rod 31 to fold the push rod frame 3 to the rear, and fold the first support 1 and the second support 2 in the front-rear direction, so that the push rod frame 3 and the rod in the bottom support mechanism 100 are folded together in the front-rear direction; drive the main body portion of the bearing device 200 to rotate relative to the support seat 5 around the second center line X2, so that the carrier is completely folded, and the carrier in the folded state is as shown in Figure 11 As shown, the push rod frame 3 and the first support 1 and the second support 2 are folded relative to each other, and the bearing device 200 is folded on one side of the bottom support mechanism 100.

[0063] Referring to Figures 12 to 15As shown, the carrier can also be folded in the following manner: first, fold the bearing device 200 so that the backrest 7 is folded inwards relative to the seat 6, and the bracket 9 is folded inwards relative to the backrest 7; rotate the upper push rod 32 relative to the lower push rod 31 to fold inwards, so that the push rod bracket 3 is flipped forwards, and the first support 1 and the second support 2 are folded inwards in the front-back direction, so that the push rod bracket 3 and the rod in the bottom support mechanism 100 are folded inwards together in the front-back direction; drive the main body of the bearing device 200 to rotate relative to the support seat 5 about the second center line X2, so that the carrier is completely folded, and the folded carrier is as shown in Figure 14 As shown, the push rod bracket 3 is folded inwards relative to the first support 1 and the second support 2, and the bearing device 200 is folded inwards on one side of the bottom support mechanism 100.

[0064] In a specific arrangement, the bottom support mechanism 100 is provided with a locking mechanism for locking the first support 1 and the second support 2, which is configured to be unlocked when the rear part of the support seat 5 is pulled up, so that, when folding, after the push rod bracket 3 is flipped forwards or backwards relative to the support seat 5, the rear part of the support seat 5 is pulled up, the bottom support mechanism 100 is folded, and the main body of the bearing device 200 is flipped inwards on one side of the bottom support mechanism 100, and the folding operation is more convenient.

[0065] In summary, the carrier provided by the embodiments of the present application, wherein the bearing device 200 can be rotated relative to the bottom support mechanism 100 to change the orientation of the seat 6, and the seat 6 can be rotated relative to the support seat 5 to be folded inwards together with the bottom support mechanism 100 in the front-back direction, so that the bearing device 200 does not need to be removed and folded separately for storage, and the problem of excessive size caused by folding the bearing device 200 together with the bottom support mechanism 100 for storage is avoided, which brings convenience to the daily use of users.

[0066] The above embodiments are only for illustrating the technical concept and characteristics of the present application, the purpose is to enable persons skilled in the art to understand the content of the present application and implement it, and cannot limit the protection scope of the present application, any equivalent changes or modifications made according to the spirit and essence of the present application should be covered within the protection scope of the present application.

Claims

1. A carrier having an unfolded state and a folded state, characterized in that, The carrier comprises: a bottom support mechanism comprising a mounting base extending in a left-right direction and a support base arranged on the mounting base; a bearing device comprising a seat rotatably connected to the support base about a seat rotation shaft, the seat rotation shaft extending in the left-right direction and arranged at a position close to one end of the support base in a front-rear direction; when the carrier is folded, the seat is folded by being flipped about the seat rotation shaft and being folded towards the bottom support mechanism.

2. The vehicle of claim 1, wherein: The support base is rotatably mounted on the mounting base about a support base rotation shaft extending in a vertical direction.

3. The vehicle of claim 1, wherein: The carrier further comprises a locking structure for locking the seat to the support base, the locking structure being arranged at a position close to the other end of the support base in the front-rear direction.

4. The carrier of claim 3, wherein: The locking structure comprises a locking groove arranged on one of the seat and the support base and a locking member movably arranged on the other of the seat and the support base.

5. The carrier of claim 4, wherein: The seat has a first end and a second end arranged at different positions along a length direction of the seat, the first end is rotatably connected to one end of the support base about the seat rotation shaft, and the second end is arranged to be separable from the support base, and the locking structure is arranged between the second end and the other end of the support base.

6. The carrier of claim 5, wherein: The locking member is movably arranged on the second end, the locking groove is arranged on the support base, and an unlocking member is movably arranged on the second end and connected to the locking member to drive the locking member to move out of engagement with the locking groove.

7. The vehicle of claim 1, wherein: The bottom support mechanism comprises a first support and a second support, the upper part of the first support is rotatably connected to the upper part of the second support, the mounting base is fixedly arranged on the upper part of the first support, and when the carrier is in a folded state, the first support and the second support are folded towards each other, and the seat is folded towards the first support or the second support.

8. The vehicle of claim 1, wherein: The bearing device further comprises a backrest rotatably connected to the seat, and when the carrier is in a folded state, the backrest is folded on one side of the seat and the bottom support mechanism is folded on the other side of the seat.

9. The vehicle of claim 1, wherein: The carrier further comprises a push rod holder, the lower part of the push rod holder is rotatably connected to the support base, and when the carrier is folded, the push rod holder is flipped forward or backward to be folded with the bottom support mechanism.

10. The vehicle of claim 9, wherein: The carrier is a stroller, the bottom support mechanism comprises a first support and a second support, the upper part of the first support is rotatably connected to the upper part of the second support, the lower part of the first support is provided with a first wheel assembly, and the lower part of the second support is provided with a second wheel assembly; and the mounting base is fixedly arranged on the upper part of the first support.

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