Carrier

Abstract

The invention 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 invention relates to a carrier. Background Art

[0002] In the prior art, the seat pockets on some vehicles such as child strollers can be used in a reversible manner, so that the direction faced by the child sitting on the seat pocket can be switched. Usually, the seat pocket can be installed on the bracket of the vehicle in a detachable manner, and its direction can be changed by forward or reverse installation. However, this requires the child to be transferred out of the seat pocket before the operation is performed, which is relatively cumbersome. In order to avoid the need to transfer the child out, some vehicles install a rotating shaft at the bottom of the seat of the seat pocket, so that the seat pocket device can be reversed when rotating around the rotating shaft. However, this structure makes it impossible to effectively close the seat pocket with the vehicle bracket when folding the vehicle, and the seat pocket needs to be removed and folded and stored separately, resulting in cumbersome folding and storage operations, which causes inconvenience in use. Summary of the invention

[0003] An object of the present invention is to provide a carrier to solve one or more problems of the prior art.

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

[0005] A vehicle has an unfolded state and a folded state, the vehicle comprising:

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

[0007] A load-bearing device, the load-bearing device comprising a seat, the seat being connected to the support seat for relative rotation around a seat rotation axis, the seat rotation axis extending in the left-right direction, and the seat rotation axis being arranged at a position of the support seat close to one end in the front-back direction;

[0008] When the carrier is folded, the seat is turned around the seat rotation axis and folded toward the bottom support mechanism.

[0009] In some embodiments, the support seat is rotatably mounted on the mounting seat around a support seat rotation axis, and the support seat rotation axis is extended along the vertical direction.

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

[0011] In some embodiments, the locking structure includes a locking slot and a locking member cooperating with the locking slot, wherein the locking slot is arranged on one of the seat and the support seat, and the locking member is movably arranged on the other of the seat and the support seat.

[0012] In some embodiments, the seat has a first end and a second end located at different ends of its length direction, the first end is rotatably connected to one end of the support seat around the seat rotation axis, the second end is detachably arranged from the support seat, and the locking structure is arranged between the second end and the other end of the support seat.

[0013] In some embodiments, the locking member is movably disposed on the second end portion, the matching portion is disposed on the support seat, and an unlocking member is movably disposed on the second end portion. The unlocking member is connected to the locking member so as to drive the locking member to move and disengage from the matching portion.

[0014] In some embodiments, the bottom support mechanism includes a first bracket and a second bracket, the upper portion of the first bracket is rotatably connected to the upper portion of the second bracket, the mounting seat is fixed to the upper portion of the first bracket, and when the vehicle is in a folded state, the first bracket and the second bracket are folded together, and the seat and the first bracket or the second bracket are close to each other.

[0015] In some embodiments, the carrying device further includes a backrest, which is rotatably connected to the seat. When the carrier is in a folded state, the backrest is folded to one side of the seat, and the bottom support mechanism is folded to the other side of the seat.

[0016] In some embodiments, the carrier further comprises a push rod frame, the lower portion of which is rotatably connected to the support seat, and when the carrier is folded, the push rod frame flips forward or backward and is folded together with the bottom support mechanism.

[0017] In some embodiments, the carrier is a cart, the bottom support mechanism includes a first bracket and a second bracket, the upper portion of the first bracket is rotatably connected to the upper portion of the second bracket, the lower portion of the first bracket is provided with a first wheel assembly, and the lower portion of the second bracket is provided with a second wheel assembly; the mounting seat is fixedly provided on the upper portion of the first bracket.

[0018] Due to the application of the above technical scheme, the present invention has the following advantages compared with the prior art: the vehicle provided by the utility model of the present invention, wherein the seat can be rotated relative to the support base and folded together with the bottom support mechanism in the front-to-back direction, so there is no need to remove the carrying device and fold it for storage separately, and it also avoids the problem of the carrying device being too large and inconvenient to store due to folding together with the bottom support mechanism, thereby bringing convenience to the user's daily use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Attached Figure 1 It is a schematic diagram of the three-dimensional structure of a carrier in an unfolded state according to an embodiment of the present invention, wherein the carrying device is in a forward position;

[0020] Attached Figure 2 For attachment Figure 1 A schematic diagram of the side structure of a vehicle;

[0021] Attached Figure 3 For attachment Figure 1 A schematic diagram of a three-dimensional structure of a carrier after the carrying device is converted to a reverse position;

[0022] Attached Figure 4 For attachment Figure 3 A schematic diagram of the side structure of a vehicle;

[0023] Attached Figure 5 For attachment Figure 1 A schematic diagram of the structural breakdown of the vehicle;

[0024] Attached Figure 6 For attachment Figure 1 Schematic diagram of the structure of the carrier in the carrier Figure 1 ;

[0025] Attached Figure 7 For attachment Figure 1 Schematic diagram of the structure of the carrier in the carrier Figure 2 ;

[0026] Attached Figure 8 For attachment Figure 1 A schematic diagram of a three-dimensional structure of a carrier in a folding mode during a folding process;

[0027] Attached Fig. 9 For attachment Figure 8 A side view structural schematic diagram of;

[0028] Attached Fig.10 For attachment Figure 8 A schematic diagram of the three-dimensional structure of the vehicle in a folded state;

[0029] Attached Fig.11 For attachment Fig.10 A side view structural schematic diagram of;

[0030] Attached Fig.12 For attachment Figure 1 A schematic diagram of the three-dimensional structure of the vehicle during the folding process in another folding mode;

[0031] Attached Fig.13 For attachment Fig.12 A side view structural schematic diagram of;

[0032] Attached Fig.14 For attachment Fig.12 A schematic diagram of the three-dimensional structure of the vehicle in a folded state;

[0033] Attached Fig.15 For attachment Fig.14 A side view structural schematic diagram of;

[0034] Wherein: 100, bottom support mechanism; 200, bearing device; 201, unlocking member;

[0035] 1. first bracket; 11. first support rod; 12. first cross bar;

[0036] 2. second bracket; 21. second support rod; 22. second cross bar;

[0037] 3. Push rod frame; 31. Lower push rod; 311. Rod body; 312. Connecting rod; 32. Upper push rod; 33. Push rod unlocking member; 34. Push rod locking joint;

[0038] 4. Mounting seat;

[0039] 5. Support seat; 51. Support seat shaft; 6. Seat; 61. Avoidance groove; 62. Seat shaft; 6A. First end; 6B. Second end; 7. Backrest; 8. Bracket; 9. Armrest;

[0040] 10, first wheel assembly; 20, second wheel assembly; X0, rotation 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 in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art. Obviously, the embodiments described in this application are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of this application.

[0042] The following descriptions of directions such as up, down, left, right, front and back are all defined by reference according to the directions observed by the passengers when sitting on the carrying device facing the direction of travel when the vehicle is in the unfolded state. The purpose is only to clearly illustrate the relative position relationship of the various components on the vehicle.

[0043] See also Figures 1 to 15 A carrier is shown, which 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 supporting seat 5 arranged on the mounting seat 4. The carrying device 200 includes a seat 6, which is connected to the supporting seat 5 for relative rotation around a seat rotation axis 62. The seat rotation axis 62 extends in the left-right direction and is arranged at a position close to one end of the supporting seat 5 in the front-back direction. When the carrier is folded, the seat 6 turns around the seat rotation axis 62 and folds toward the bottom support mechanism 100, so that the carrying device 200 is folded in front of or behind the bottom support mechanism 100.

[0044] In the carrier, the support seat 5 is rotatably mounted on the mounting seat 4 around the support seat rotation axis 51, and the support seat rotation axis 51 is extended in the vertical direction. The carrying device 200 and the support seat 5 can rotate together around the support seat rotation axis 51 to change the orientation of the seat 6. Figure 5 As shown, the support seat shaft 51 extends vertically downward from the bottom of the support seat 5, and the mounting seat 4 has a mounting hole for the support seat shaft 51 to be inserted in a matching manner. The axis of the support seat shaft 51 constitutes the first center line X1.

[0045] In the carrier, the seat 6 extends in a generally horizontal direction, and has a first end 6A and a second end 6B disposed at two different ends of the length direction thereof. The first end 6A is rotatably connected to one end of the support seat 5 via a seat rotation shaft 51, and the axis of the seat rotation shaft 51 is the second center line X2. When the carrying device 200 is fixed on 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 detachably disposed from the support seat 5.

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

[0047] When the carrier is folded, the second end 6B of the seat 6 can be separated from the support base 5, and the seat 6 can be rotated relative to the support base 5 around the second center line X2, so that the seat 6 is converted to extend in the up and down directions and folded with the bottom support mechanism 100 in the front and back directions, 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, and the locking structure is arranged at a position near the other end of the support seat 5 in the front-to-back direction. The locking structure specifically includes a locking groove and a locking member that cooperates with the locking groove, the locking groove is arranged on one of the seat 6 and the support seat 5, and the locking member is movably arranged on the other of the seat 6 and the support seat 5. In this embodiment, the locking member is movably arranged on the second end 6B, the locking groove is arranged on the support seat 5, and the locking member makes the second end 6B fixed relative to the support seat 5 when cooperating with the above-mentioned locking groove, and when the locking member is separated from the locking groove, the seat 6 can be driven to rotate relative to the support seat 5 around the second center line X2 so that the second end 6B is separated from the support seat 5. Specifically, the locking member can be rotatably or movably arranged on the second end 6B, and it is separated from the locking groove or cooperates with the locking groove when moving relative to the second end 6B, and the unlocking and locking of the locking structure are realized accordingly.

[0049] As shown in the drawings, in this embodiment, the bottom support mechanism 100 can be folded and includes a first bracket 1 and a second bracket 2. The upper part of the first bracket 1 is connected to the upper part of the second bracket 2 by rotation around a rotation center line X0, and the rotation center line X0 extends in the left-right direction; the mounting seat 4 is fixedly arranged on the upper part of the first bracket 1. When the vehicle is in the unfolded state, the first bracket 1 and the second bracket 2 are relatively unfolded, the bearing device 200 is integrally located above the bottom support mechanism 100, and the seat 6 can provide a relatively high sitting support; when the vehicle is folded, the first bracket 1 and the second bracket 2 rotate around the rotation center line X0 and fold together in the front-back direction, and the seat 6 rotates relative to the support seat 5 around the second center line X2 and folds with the first bracket 1 or folds with the second bracket 2.

[0050] The rotation center line X0 and the second center line X2 are parallel to each other. When specifically set, the second center line X2 and the rotation center line X0 are spaced apart in the front-rear direction. The first center line X1 is located between the first end 6A and the second end 6B. The rotation center line X0 is coplanar with the first center line X1 and the two are perpendicular to each other. When the carrying device 200 is in the forward position and in the reverse position, the center of gravity position of the seat 6 on the bottom support mechanism 100 remains basically unchanged, and the overall shape of the carrier after the reversal remains basically unchanged. When folded, when the seat 6 and other components on the carrying device 200 are folded with the first bracket 1 or folded with the second bracket 2, the folded shape of the carrier is basically the same.

[0051] As shown in the accompanying drawings, in this embodiment, the supporting device 200 also includes a backrest 7, a bracket 8 and an armrest frame 9, the lower portion of the backrest 7, one end portion of the seat 6 and one end portion of the armrest frame 9 are rotatably connected, the upper portion of the bracket 8 is rotatably connected to the other end portion of the seat 6, wherein the armrest frame 9 is a U-shaped frame with an opening facing backwards, the bracket 8 mainly provides support for the feet of the occupant, and the upper surface of the seat 6 gradually extends downward from the side where the bracket 8 is located to the side where the backrest 7 is located.

[0052] When the supporting device 200 is folded, the backrest 7 is rotated and retracted relative to the seat 6, so that the armrest frame 9 is rotated and retracted between the backrest 7 and the seat 6, and the bracket 8 is rotated relative to the seat 6 and extends approximately along the same length direction as the seat 6, so that the two overlap with the backrest 7 as much as possible in the length direction. In this embodiment, the total length of the supporting device 200 after folding is approximately the same as the length of the backrest 7.

[0053] In this embodiment, when the carrier is in a 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, so that the folded carrying device 200 can 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 flatter and easier 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 aesthetics and regularity of the folded carrier.

[0054] In this embodiment, an unlocking member 201 is also movably provided on the second end 6B of the seat 6, and the unlocking member 201 is connected to the above-mentioned locking member so as to drive the locking member to move and disengage from the lock groove, thereby unlocking the locking structure. When set, in the carrying device 200, a seat locking mechanism for locking the seat relative to each other is provided between the lower part of the backrest 7, the second end 6B of the seat 6, and one end of the armrest frame 9, and the unlocking member 201 can also be configured to be used for unlocking the seat locking mechanism at the same time. In other embodiments, the unlocking member 201 can also be provided at other positions on the carrying device 200.

[0055] As shown in the accompanying drawings, in this embodiment, the carrier is a cart, and the bottom support mechanism 100 also includes 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 bracket 1, and the second wheel assembly 20 is arranged at the bottom of the second bracket 2.

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

[0057] The carrier also includes a push rod frame 3, the lower part 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 rotate relative to the mounting seat 4 around the first center line X1 to achieve the reversal of the seat 6. Specifically, the lower part of the push rod frame 3 is rotatably connected to the support seat 5 around the third center line X3, and the third center line X3 is parallel to the second center line X2.

[0058] exist Figure 1 , Figure 2 In the state shown, the carrier 200 is in the forward position, the first end 6A of the seat 6 is in the front and the second end 6B is in the rear, and the child sitting on the carrier 200 faces forward with his back to the pusher; Figure 3 , Figure 4 In the illustrated state, the carrier 200 is in a reverse position, with the first end 6A of the seat 6 at the rear and the second end 6B at the front, and the child sitting on the carrier 200 faces rearward, facing the pusher.

[0059] During the reversing operation, the operator can first drive the push rod frame 3 to rotate the push rod frame 3 and the carrying device 200 as a whole around the first center line X1 relative to the mounting seat 4. After switching the orientation of the seat 6, the operator can then drive the push rod frame 3 to flip forward and backward relative to the support seat 5 around the third center line X3, so that the push rod frame 3 is switched, and the pushing end at its upper part is then transferred to the same side as the second wheel assembly 20, that is, located at the rear side of the carrier, so that the first wheel assembly 10 remains located in the front in the direction of travel of the cart.

[0060] See also Figure 5As shown, in this embodiment, the push rod frame 3 includes a lower push rod 31 and an upper push rod 32, the lower push rod 31 has two rods arranged on the left and right sides, the upper push rod 32 is a U-shaped rod, and its two ends are respectively connected to the upper ends of the lower push rods 31 on both sides in a rotatable manner, and the rotational connection between the two is provided with a push rod locking joint 34 that can lock the two mutually, and the middle part 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 includes 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 to the support seat 5 through the connecting rods 312 on both sides, wherein the axis of the connecting rod 312 constitutes the third center line X3. Avoidance grooves 61 are also provided on both sides of the seat 6, and the connecting rod 312 can be rotatably inserted in the avoidance groove 61. The rotational connection 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 together. In the specific setting, the push rod locking member is unlocked by operating the push rod unlocking member 33.

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

[0062] Specifically, see Figures 8 to 11 As shown, the carrier can be folded in the following manner: first, the carrying device 200 is folded, so that the backrest 7 is rotated and folded relative to the seat 6, and the bracket 9 is rotated and folded toward the backrest 7; the upper push rod 32 is rotated and folded relative to the lower push rod 31, so that the push rod frame 3 is flipped backward, and the first bracket 1 and the second bracket 2 are folded in the front-to-back direction, so that the push rod frame 3 and the rod members in the bottom support mechanism 100 are folded together in the front-to-back direction; the main part of the carrying device 200 is driven to rotate relative to the support seat 5 around the second center line X2, so that the carrier is folded. The carrier in the folded state is as shown in FIG. Fig.11 As shown, the push rod frame 3 and the first bracket 1 and the second bracket 2 are folded together, and the carrying device 200 is folded on one side of the bottom support mechanism 100.

[0063] See also Figures 12 to 15As shown, the carrier can also be folded in the following manner: first, the carrying device 200 is folded, so that the backrest 7 is rotated and folded relative to the seat 6, and the bracket 9 is rotated and folded toward the backrest 7; the upper push rod 32 is rotated and folded relative to the lower push rod 31, so that the push rod frame 3 is flipped forward, and the first bracket 1 and the second bracket 2 are folded in the front-to-back direction, so that the push rod frame 3 and the rod members in the bottom support mechanism 100 are folded together in the front-to-back direction; the main part of the carrying device 200 is driven to rotate relative to the support seat 5 around the second center line X2, so that the carrier is folded. The carrier in the folded state is as shown in FIG. Fig.14 As shown, the push rod frame 3 and the first bracket 1 and the second bracket 2 are folded together, and the carrying device 200 is folded on one side of the bottom support mechanism 100.

[0064] In the specific setting, a locking mechanism for locking the first bracket 1 and the second bracket 2 is provided on the bottom support mechanism 100, and the locking mechanism is configured to be unlocked when the rear part of the support seat 5 is lifted. In this way, when folding, after flipping the push rod frame 3 backward or forward relative to the support seat 5, the rear part of the support seat 5 is lifted upward, so that the bottom support mechanism 100 can be folded, and the main part of the supporting device 200 is flipped and folded to one side of the bottom support mechanism 100, and the folding operation is more convenient.

[0065] In summary, the carrier provided by the embodiment of the present invention has a load-bearing device 200 that can rotate relative to the bottom support mechanism 100 to change the orientation of the seat 6. At the same time, the seat 6 can rotate relative to the support seat 5 and be folded together with the bottom support mechanism 100 in the front-to-back direction. In this way, there is no need to remove the load-bearing device 200 and fold it for storage separately. This also avoids the problem of the load-bearing device 200 being too large and inconvenient to store due to being folded together with the bottom support mechanism 100, thereby bringing convenience to the user's daily use.

[0066] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it. They cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A vehicle having an unfolded state and a folded state, characterized in that: The vehicle comprises: The bottom support mechanism comprises a mounting seat extending in the left-right direction and a support seat arranged on the mounting seat; A load-bearing device, the load-bearing device comprising a seat, the seat being connected to the support seat for relative rotation around a seat rotation axis, the seat rotation axis extending in the left-right direction, and the seat rotation axis being arranged at a position of the support seat close to one end in the front-back direction; When the carrier is folded, the seat is turned around the seat rotation axis and folded toward the bottom support mechanism.

2. The carrier according to claim 1, characterized in that: The support seat is rotatably mounted on the mounting seat around a support seat rotation axis, and the support seat rotation axis is extended along a vertical direction.

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

4. The carrier according to claim 3, characterized in that: The locking structure comprises a locking groove and a locking member matched with the locking groove, wherein the locking groove is arranged on one of the seat and the supporting base, and the locking member is movably arranged on the other of the seat and the supporting base.

5. The carrier according to claim 4, characterized in that: The seat has a first end and a second end which are arranged at different ends in its length direction. The first end is rotatably connected to one end of the support seat around the seat rotation axis, the second end is detachably arranged from the support seat, and the locking structure is arranged between the second end and the other end of the support seat.

6. The carrier according to claim 5, characterized in that: The locking piece is movably arranged on the second end, the matching portion is arranged on the support seat, and an unlocking piece is movably arranged on the second end. The unlocking piece is connected to the locking piece so as to drive the locking piece to move and disengage from the matching portion.

7. The carrier according to claim 1, characterized in that: The bottom support mechanism includes a first bracket and a second bracket, the upper portion of the first bracket is rotatably connected to the upper portion of the second bracket, the mounting seat is fixed to the upper portion of the first bracket, and when the vehicle is in a folded state, the first bracket and the second bracket are folded together, and the seat and the first bracket or the second bracket are close to each other.

8. The carrier according to claim 1, characterized in that: The carrying device also includes a backrest, which is rotatably connected to the seat. 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 carrier according to claim 1, characterized in that: The carrier also includes a push rod frame, the lower part of which is rotatably connected to the support seat. When the carrier is folded, the push rod frame flips forward or backward and is folded together with the bottom support mechanism.

10. The carrier according to claim 9, characterized in that: The carrier is a cart, and the bottom support mechanism includes a first bracket and a second bracket. The upper part of the first bracket is rotatably connected to the upper part of the second bracket. The lower part of the first bracket is provided with a first wheel assembly, and the lower part of the second bracket is provided with a second wheel assembly; the mounting seat is fixedly provided on the upper part of the first bracket.

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