CN221068183U

CN221068183U - Child cart

Info

Publication number: CN221068183U
Application number: CN202322848203.3U
Authority: CN
Inventors: 尤志刚; 周超; 李照国
Original assignee: Goodbaby Child Products Co Ltd
Current assignee: Goodbaby Child Products Co Ltd
Priority date: 2023-10-24
Filing date: 2023-10-24
Publication date: 2024-06-04
Anticipated expiration: 2033-10-24

Abstract

The utility model discloses a child stroller, which comprises a stroller frame, wherein the stroller frame comprises side brackets, each side bracket comprises a front bracket component, a rear bracket, a push rod component, an upper supporting rod, a front connecting rod and a rear connecting rod, each front bracket component comprises a front upper rod and a front lower rod which are connected in a sliding manner, each front upper rod, each rear bracket and each push rod component are connected in a rotating manner, a third party is connected with any one of the front upper rod, the front upper rod and the rear push rod in a rotating manner, or the front upper rod and the rear upper rod are connected in a coaxial rotating manner, one end part of each front connecting rod is connected in a rotating manner with the front lower rod, the other end part of each front connecting rod is connected in a rotating manner with the lower part of the upper supporting rod, one end part of each rear connecting rod is connected in a rotating manner with the lower part of the upper supporting rod, and a transverse supporting component which can be synchronously folded and unfolded along the left and right directions when the side brackets on each side are folded and unfolded. The folding baby stroller has compact structure and small volume.

Description

Child cart

Technical Field

The utility model relates to the technical field of children products, in particular to a child trolley.

Background

In order to facilitate carrying and storage of the child stroller, most child strollers in the prior art can be folded. The stroller comprises a stroller frame, which is generally formed by mutually rotating and/or sliding connection of a plurality of rods. When the connection modes between the rods forming the cart frame and the rods are different, the folding modes of the cart frame are also different, and the whole volume of the baby cart after the cart frame is folded is also different. Some children's carts in the prior art have the structure volume still great after folding, inconvenient problem of carrying and depositing.

Disclosure of utility model

The utility model aims to overcome the defects in the prior art and provides a compact-structure small-size child stroller after being folded.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a stroller comprising a stroller frame having an expanded configuration and a collapsed configuration, the stroller frame including side brackets disposed on left and right sides, respectively, the side brackets of each side each comprising:

The front bracket assembly comprises a front upper rod and a front lower rod which is arranged on the front upper rod in a sliding manner along the length extension direction of the front upper rod;

A rear bracket;

A push rod assembly;

Two of the upper part of the front upper rod, the upper part of the rear bracket and the lower part of the push rod assembly are rotationally connected, and a third one is rotationally connected with any one of the three or coaxially rotationally connected with the three;

the upper stay bar is rotationally connected with the front upper bar;

The front connecting rod is rotatably connected with the front lower rod at one end part, and the other end part of the front connecting rod is rotatably connected with the lower part of the upper supporting rod;

The rear connecting rod is rotatably connected with the rear bracket at one end part, and the other end part of the rear connecting rod is rotatably connected with the lower part of the upper supporting rod;

The trolley frame also comprises a transverse strut assembly which is connected between the side brackets on the left side and the right side and can be synchronously folded and unfolded along the left direction and the right direction when the side brackets on each side are folded and unfolded.

Preferably, the cross brace assembly comprises a front cross brace assembly, the front cross brace assembly comprises two front supporting rods with one end part connected in a rotating mode, the other end parts of the two front supporting rods are respectively connected with the lower parts of the front lower rods on the corresponding side in a rotating mode, the cart frame further comprises first connecting rods used for linking the two front supporting rods to rotate relatively, the first connecting rods are respectively arranged on the left side and the right side, one end part of each side of each first connecting rod is connected with the other end part of the corresponding side of each front supporting rod in a rotating mode, and the other end part of each first connecting rod is connected with the lower parts of the corresponding upper supporting rods in a rotating mode.

Further, the other end of the front connecting rod and the other end of the first connecting rod are both rotationally connected with the front part of the lower part of the upper supporting rod, and the rotational connection part of the upper supporting rod and the front upper rod, the rotational connection part of the first connecting rod and the upper supporting rod and the rotational connection part of the front connecting rod and the upper supporting rod are sequentially arranged from top to bottom.

Preferably, the back cross brace assembly further comprises a back cross brace assembly, the back cross brace assembly comprises two back supporting rods with one end part connected in a rotating mode, the other end parts of the two back supporting rods are respectively connected with the lower parts of the corresponding side of the back supporting frames in a rotating mode, the cart frame further comprises second connecting rods used for linking the two back supporting rods to rotate relatively, the second connecting rods are respectively arranged on the left side and the right side, one end part of each side of each second connecting rod is connected with the corresponding side of the corresponding back supporting rod in a rotating mode, and the other end part of each second connecting rod is connected with the lower parts of the corresponding side of the corresponding upper supporting rods in a rotating mode.

Further, the two rotating shafts connected with the rear stay bars in a rotating manner and the rotating shafts connected with the rear stay bars in a rotating manner extend along the front-rear direction, one end part of the second connecting rod and the rear stay bar on the corresponding side can be simultaneously connected in a rotating manner in two intersecting plane directions, and the other end part of the second connecting rod and the lower part of the upper stay bar on the corresponding side can be simultaneously connected in a rotating manner in two intersecting plane directions.

Further, the other end of the rear connecting rod and the other end of the second connecting rod are both rotationally connected with the rear part of the lower part of the upper supporting rod, and the rotational connection part of the upper supporting rod and the front upper rod, the rotational connection part of the rear connecting rod and the upper supporting rod and the rotational connection part of the second connecting rod and the upper supporting rod are sequentially arranged from top to bottom.

Preferably, the side bracket of each side further comprises a seat bar, a rear portion of the seat bar is rotatably connected with the push rod assembly, and an upper portion of the upper stay bar is rotatably connected with a front portion of the seat bar.

Further, the cross brace assembly further comprises cross brace assemblies arranged between the upper brace rods or the seat rods and the front support assemblies on the left side and the right side, at least one cross brace assembly is arranged, each cross brace assembly comprises two cross brace rods which are arranged in a crossing way and are rotationally connected at the crossing part, one end part of each cross brace rod is rotationally connected with the upper brace rod or the seat rod, the other end part of each cross brace rod is rotationally connected with the upper part of the front upper rod, and the adjacent end parts of the adjacent cross brace assemblies are rotationally connected.

Further, on the upper stay bar, the rotation connection part of the upper stay bar and the seat bar, the rotation connection part of the upper stay bar and the cross stay bar, and the rotation connection part of the upper stay bar and the front upper stay bar are sequentially arranged from top to bottom.

Preferably, the transverse support assembly further comprises a handle assembly, the handle assembly comprises a handle seat in the middle and handle bars respectively arranged on the left side and the right side of the handle seat, one end of each handle bar is rotatably connected with a corresponding side part of the handle seat, and the other end of each handle bar is rotatably connected with the upper part of the push rod assembly on the corresponding side.

Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages: the side brackets of the baby stroller can be folded, and the cross brace assemblies can be linked to fold along the left and right directions when the side brackets are folded, so that the side brackets on the left and right sides can be closed, the folding operation of the baby stroller is convenient, and the dimensions of the folded baby stroller in the front-back, left-right and height directions are greatly reduced, so that the folded baby stroller is compact in structure and small in size, and the carrying and the storage of the baby stroller are facilitated.

Drawings

Fig. 1 is a perspective view of a stroller in an unfolded state according to the present embodiment;

FIG. 2 is a schematic side view of the stroller in the unfolded state according to the present embodiment;

fig. 3 is a schematic rear view of the stroller in the unfolded state according to the present embodiment;

fig. 4 is a schematic perspective view of the stroller in the folding process according to the present embodiment;

FIG. 5 is a schematic side view of the stroller during folding in accordance with the present embodiment;

Fig. 6 is a schematic perspective view of the stroller in a folded state according to the present embodiment;

FIG. 7 is a schematic side view of the stroller in a folded condition according to the present embodiment;

Fig. 8 is a schematic front view of the stroller in a folded state according to the present embodiment.

Wherein: 11. a front bracket assembly; 111. a front upper rod; 112. a front lower rod; 113. a joint; 12. a rear bracket; 13. a push rod assembly; 131. an upper push rod; 132. a middle push rod; 133. a push rod is downwards pushed; 14. an upper stay bar; 15. a front link; 16. a rear connecting rod; 17. a seat rod; 201. a first shaft; 202. a second shaft; 203. a third shaft; 204. a fourth shaft; 205. a fifth shaft; 206. a sixth shaft; 207. a seventh axis; 208. an eighth shaft; 209. a ninth axis; 210. a tenth shaft; 211. an eleventh axis; 212. a twelfth axis; 213. a tenth axis; 214. a fourteenth axis; 215. a fifteenth shaft; 31. a front stay; 32. a rear stay; 33. a cross brace; 341. a handle base; 342. a handle bar; 41. a first link; 42. a second link; 51. a front wheel assembly; 52. and a rear wheel assembly.

Detailed Description

The technical scheme of the utility model is further described below with reference to the attached drawings and specific embodiments.

In the following description, the directions of "front", "rear", "left", "right", "up", "down", etc. are referred to as "front" in the left direction in the drawing, "rear" in the right direction, the upper direction is "up", the lower direction is "down", and the directions perpendicular to the paper surface in the drawing are "left" and "right", respectively, according to fig. 2. The above directional definitions are merely provided to facilitate the description of the utility model and to simplify the description and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operate in a particular orientation and are not to be construed as limiting the utility model.

As shown in fig. 1 to 8, the child stroller of the present utility model includes a stroller frame having an unfolded state and a folded state, a front wheel assembly 51 provided at a bottom front portion of the stroller frame, and a rear wheel assembly 52 provided at a bottom rear portion of the stroller frame.

The trolley frame comprises side brackets positioned at the left side and the right side and a transverse strut assembly arranged between the side brackets at the left side and the right side.

As shown in fig. 1 and 2, the side brackets on each side include a front bracket assembly 11, a rear bracket 12, a push rod assembly 13, an upper stay 14, a front link 15, and a rear link 16.

The front bracket assembly 11 includes a front upper rod 111 and a front lower rod 112, and the front lower rod 112 is slidably provided on the front upper rod 111 along a length extending direction of the front upper rod 111. The front wheel assemblies 51 are respectively provided at lower portions of the front lower bars 112 on each side. In this embodiment, the front upper rod 111 has a lumen extending along its length direction, and the front lower rod 112 is slidably disposed in the lumen along the length extending direction of the lumen. The lower portion of the front lower rod 112 protrudes downward outside the lumen, and the front lower rod 112 can slide with respect to the front upper rod 111 in a direction to retract or protrude the front lower rod 112 into or out of the lumen.

Rear wheel assemblies 52 are provided at lower portions of the rear brackets 12 on each side, respectively.

Two of the upper part of the front upper rod 111, the upper part of the rear bracket 12 and the lower part of the push rod assembly 13 are rotatably connected, and a third one is rotatably connected to either one of the above or the above three are coaxially rotatably connected. In this embodiment, the joint 113 is provided at the upper portion of the front upper rod 111, the lower portion of the push rod assembly 13 is rotatably connected to the upper portion of the joint 113 through the first shaft 201, and the upper portion of the rear bracket 12 is rotatably connected to the lower portion of the joint 113 through the second shaft 202.

The upper stay 14 is rotatably coupled to the front upper rod 111 through a third shaft 203.

One end of the front link 15 is rotatably connected to the front lower rod 112 via a fourth shaft 204, and the other end of the front link 15 is rotatably connected to the lower portion of the upper stay 14 via a fifth shaft 205.

One end of the rear link 16 is rotatably connected to the rear bracket 12 through a sixth shaft 206, and the other end of the rear link 16 is rotatably connected to the lower portion of the upper stay 14 through a seventh shaft 207.

As shown in fig. 1 and 2, the side brackets of each side further include a seat bar 17, a rear portion of the seat bar 17 is rotatably coupled to the push rod assembly 13 through an eighth shaft 208, and an upper portion of the upper stay 14 is rotatably coupled to a front portion of the seat bar 17 through a ninth shaft 209.

The first shaft 201, the second shaft 202, the third shaft 203, the fourth shaft 204, the fifth shaft 205, the sixth shaft 206, the seventh shaft 207, the eighth shaft 208, and the ninth shaft 209 all extend in the left-right direction.

Thus, in the side brackets on each side, a crank block mechanism is formed between the front upper rod 111, the front lower rod 112, the front link 15 and the upper stay 14, a four-bar mechanism is formed between the front upper rod 111, the rear bracket 12, the rear link 16 and the upper stay 14, and a four-bar mechanism is formed between the front upper rod 111, the push rod assembly 13, the seat bar 17 and the upper stay 14.

When one of the front upper rod 111, the front lower rod 112, the rear bracket 12, the push rod assembly 13, the upper stay 14, the front connecting rod 15, the rear connecting rod 16 and the seat rod 17 acts during folding and unfolding operations of the stroller, other components can be linked to act through the crank-slider mechanism and the two four-bar mechanisms, so that the folding and unfolding operations of the stroller are convenient.

The push rod assembly 13 may be composed of a plurality of rods which are sequentially rotated or slidably connected. In this embodiment, the push rod assembly includes an upper push rod 131, a middle push rod 132 and a lower push rod 133, wherein the middle push rod 132 is slidably disposed on the lower push rod 133 along the length extending direction of the lower push rod 133, and the upper push rod 131 is slidably disposed on the middle push rod 132 along the length extending direction of the middle push rod 132. When the stroller is in the unfolded state, the upper push rod 131, the middle push rod 132 and the lower push rod 133 are sequentially arranged from top to bottom. The lower portion of the lower push rod 133 is rotatably connected to the upper portion of the joint 113 through a first shaft 201, and the rear portion of the seat post 17 is rotatably connected to the lower push rod 133 through an eighth shaft 208.

The transverse support assembly can rotate relative to the side supports, when the baby stroller is in an unfolding state, the transverse support assembly can be folded and closed along the left-right direction, so that the side supports on the left side and the right side can be closed, and the structural volume of the folded baby stroller is smaller. In this embodiment, the cross brace assembly includes a front cross brace assembly, a rear cross brace assembly, a cross brace assembly, and a grip assembly.

As shown in fig. 1 and 2, the front cross brace assembly is disposed between the front lower bars 112 on the left and right sides. The front cross brace assembly includes two front brace bars 31, one end portions of the two front brace bars 31 are rotatably connected through a tenth shaft 210, and the other end portions of the two front brace bars 31 are rotatably connected with the lower portions of the front lower bars 111 on the corresponding sides through eleventh shafts 211, respectively. When the child barrow is in the unfolding state, the front transverse support assembly can serve as a pedal rod for the child to tread.

In this embodiment, the tenth shaft 210 and the eleventh shaft 211 extend in the up-down direction, and the two front stay bars 31 are rotated backward to be close to each other with respect to the front lower bar 112 during the folding process of the stroller.

The trolley frame also comprises a first connecting rod 41, and when the side bracket is folded, the first connecting rod 41 can be used for linking the two front supporting rods 31, so that the two front supporting rods 31 can relatively rotate and draw together. The first links 41 are provided on the left and right sides, respectively, and one end of the first link 41 on each side is rotatably connected to the other end of the front stay 31 on the corresponding side through a twelfth shaft 212, and the other end of the first link 41 is rotatably connected to the lower portion of the upper stay 14 on the corresponding side through a tenth shaft 213.

As shown in fig. 1 and 2, the rear cross brace assembly is disposed between lower portions of the rear brackets 12 on the left and right sides. The rear cross brace assembly includes two rear stay bars 32, one end portions of the two rear stay bars 32 are rotatably connected through a fourteenth shaft 214, and the other end portions of the two rear stay bars 32 are rotatably connected with the lower portions of the rear brackets 12 on the corresponding sides through fifteenth shafts 215, respectively.

The trolley frame also comprises a second connecting rod 42, and when the side bracket is folded, the second connecting rod 42 can be used for linking the two rear supporting rods 32, so that the two rear supporting rods 32 can relatively rotate and draw together. The second links 42 are respectively provided at left and right sides, and one end of each second link 42 is rotatably connected to the corresponding one of the rear stay bars 32, and the other end of the second link 42 is rotatably connected to the lower portion of the corresponding one of the upper stay bars 14.

Preferably, the fourteenth shaft 214 and the fifteenth shaft 215 extend in the front-rear direction, so that when the stroller is folded, the two rear stay bars 32 rotate upwards relative to the rear bracket 12 to be close together, thereby avoiding interference with the front stay bar 31 during folding of the stroller. This requires that one end of the second link 42 is rotatably connected to the corresponding one of the rear stay bars 32 in two intersecting plane directions at the same time, and the other end of the second link 42 is rotatably connected to the lower portion of the corresponding one of the upper stay bars 14 in two intersecting plane directions at the same time, so that the two rear stay bars 32 can be linked to rotate by the second link 42.

As shown in fig. 1 and 2, the cross brace assembly is disposed between the upper brace 14 or the seat bar 17 on the left and right sides and the front bracket assembly 11. The cross brace assembly is provided with a set at least, and every group cross brace assembly includes two cross brace 33, and two cross brace 33 cross arrangement, and the department of crossing rotates the connection.

When the cross brace assembly is provided with a set, one end of each cross brace 33 is rotatably connected to the upper brace 14 or the seat bar 17 on one side in two intersecting plane directions at the same time, and the other end of the cross brace 33 is rotatably connected to the upper portion of the front upper brace 111 on the other side in two intersecting plane directions at the same time. When the cross brace assemblies are provided with a plurality of groups, adjacent ends of two groups of adjacent cross brace assemblies are rotationally connected, the cross brace assemblies are close to one side of the side bracket, one end of the cross brace 33 and the upper brace 14 or the seat bar 17 can be simultaneously rotationally connected in two intersecting plane directions, and the other end of the cross brace 33 and the upper part of the front upper brace 111 can be simultaneously rotationally connected in two intersecting plane directions.

As shown in fig. 1 and 2, the grip assembly is disposed between upper portions of the upper push rods 131 on the left and right sides. The handle assembly includes a handle seat 341 in the middle and handle bars 342 disposed at the left and right sides of the handle seat 341, respectively, one end of each handle bar 342 is rotatably connected to a corresponding side of the handle seat 341, and the other end of the handle bar 342 is rotatably connected to the upper portion of the upper push rod 131 at the corresponding side.

When the stroller is in the unfolded state, the fifth shaft 205 and the tenth shaft 213 are both positioned at the front part of the lower part of the upper stay 14, and the seventh shaft 207, the rotational connection part of the second link 42 and the upper stay 14 are both positioned at the rear part of the lower part of the upper stay 14. The ninth shaft 209, the rotational connection between the upper stay 14 and the cross stay 33, the third shaft 203, the third shaft 213, and the fifth shaft 205 are sequentially disposed on the upper stay 14 from top to bottom, and the rotational connection between the ninth shaft 209, the upper stay 14 and the cross stay 33, the rotational connection between the third shaft 203, the seventh shaft 207, and the second link 42 are sequentially disposed from top to bottom. As shown in fig. 1 to 3.

When the stroller is folded from the unfolded state, the upper push rod 131 slides downwards to be close to the middle push rod 132, and the middle push rod 132 drives the upper push rod 131 to slide downwards to be close to the lower push rod 133. The push rod assembly 13 is rotated forward about the first axis 201 in unison with the front bracket assembly 11, and the upper strut 14 is urged to rotate downwardly about the third axis 203 by the seat post 17. When the upper stay bar 14 rotates, the front lower rod 112 is pulled by the front connecting rod 15 to slide relative to the front upper rod 111, so that the front lower rod 112 gradually retracts into the lumen of the front upper rod 111. When the upper stay bar 14 rotates, the rear bracket 12 is pulled by the rear connecting rod 16 to rotate forwards around the second axis 202 to be close to the front bracket assembly 11, so that the side brackets on each side are folded in the front-back and up-down directions, and the folding process is shown in fig. 4 and 5.

When the upper stay bar 14 rotates, the front stay bars 31 on the left and right sides are pulled by the first connecting rod 41 to rotate backwards around the eleventh shaft 211 and are closed, and the rear stay bars 31 on the left and right sides are pulled by the second connecting rod 42 to rotate upwards around the fifteenth shaft 215 and are closed, so that the cross stay bars 33 rotate backwards. Pressing down on the grip base 341 causes the grip base 341 to move downward relative to the upper push rod 131 and causes the grip rod 342 to rotate downward relative to the upper push rod 131. These bring the side brackets on the left and right sides together, the folding process being as shown in figures 4 and 5.

As shown in fig. 6 to 8, when the stroller is in a folded state, the rod pieces forming the side brackets are closely gathered together, and the cross brace assembly is folded to enable the side brackets on the left side and the right side to be gathered together, so that the sizes of the stroller in the front-rear direction, the left-right direction and the height direction are greatly reduced, and the folded stroller is compact in structure, small in size and convenient to carry and store. Moreover, the baby carriage can stand on the ground after being folded, so that the baby carriage is convenient to store.

The above embodiments are provided to illustrate the technical concept and features of the present utility model and are intended to enable those skilled in the art to understand the content of the present utility model and implement the same, and are not intended to limit the scope of the present utility model. All equivalent changes or modifications made in accordance with the spirit of the present utility model should be construed to be included in the scope of the present utility model.

Claims

1. A child stroller, characterized in that: including having the shallow frame of expansion state and folding state, the shallow frame is including setting up the side support in the left and right sides respectively, every side the side support all includes:

A rear bracket;

A push rod assembly;

the upper stay bar is rotationally connected with the front upper bar;

2. The stroller of claim 1, wherein: the front cross brace assembly comprises two front cross brace rods, one end of each front cross brace assembly is connected with two front support rods in a rotating mode, the other ends of the two front support rods are respectively connected with the lower portions of the front lower rods on one corresponding side in a rotating mode, the trolley frame further comprises first connecting rods used for linking the two front support rods to rotate relatively, the first connecting rods are arranged on the left side and the right side respectively, one end of each first connecting rod on each side is connected with the other end of each front support rod on one corresponding side in a rotating mode, and the other end of each first connecting rod is connected with the lower portions of the upper support rods on one corresponding side in a rotating mode.

3. The stroller of claim 2, wherein: the other end of the front connecting rod and the other end of the first connecting rod are both rotationally connected with the front part of the lower part of the upper supporting rod, and the rotational connection part of the upper supporting rod and the front upper rod, the rotational connection part of the first connecting rod and the upper supporting rod and the rotational connection part of the front connecting rod and the upper supporting rod are sequentially arranged from top to bottom.

4. The stroller of claim 1, wherein: the back cross brace assembly still includes back cross brace assembly, back cross brace assembly includes two back vaulting poles that one end rotated and is connected, two the other end of back vaulting pole respectively with correspond one side the lower part of back support rotates and is connected, the shallow frame still includes and is used for linking two back vaulting pole relative pivoted second connecting rod, the second connecting rod sets up respectively in the left and right sides, every side one end of second connecting rod with correspond one side back vaulting pole rotates and is connected, the other end of second connecting rod with correspond one side the lower part of going up the vaulting pole rotates and is connected.

5. The stroller of claim 4, wherein: the two rotating shafts connected with the rear stay bars in a rotating mode and the rotating shafts connected with the rear stay bars in a rotating mode extend in the front-rear direction, one end portion of the second connecting rod and the rear stay bar on the corresponding side can be connected in a rotating mode in two intersecting plane directions at the same time, and the other end portion of the second connecting rod and the lower portion of the upper stay bar on the corresponding side can be connected in a rotating mode in two intersecting plane directions at the same time.

6. The stroller of claim 4, wherein: the other end of the rear connecting rod and the other end of the second connecting rod are both rotationally connected with the rear part of the lower part of the upper supporting rod, and the rotational connection part of the upper supporting rod and the front upper rod, the rotational connection part of the rear connecting rod and the upper supporting rod and the rotational connection part of the second connecting rod and the upper supporting rod are sequentially arranged from top to bottom.

7. The stroller of claim 1, wherein: the side brackets of each side further comprise seat bars, the rear parts of the seat bars are rotationally connected with the push rod assemblies, and the upper parts of the upper support bars are rotationally connected with the front parts of the seat bars.

8. The stroller of claim 7, wherein: the cross brace assembly further comprises cross brace assemblies arranged on the left side and the right side and between the upper brace rod or the seat rod and the front support assembly, at least one group of cross brace assemblies are arranged, each group of cross brace assemblies comprises two cross brace rods which are arranged in a crossing way and are rotationally connected at the crossing part, two cross brace rods are close to the end parts of the side support, one end part of each cross brace rod is rotationally connected with the upper brace rod or the seat rod, the other end part of each cross brace rod is rotationally connected with the upper part of the front upper rod, and two adjacent end parts of the adjacent cross brace assemblies are rotationally connected.

9. The stroller of claim 8, wherein: on the upper stay bar, the rotation connection part of the upper stay bar and the seat bar, the rotation connection part of the upper stay bar and the cross stay bar and the rotation connection part of the upper stay bar and the front upper stay bar are sequentially arranged from top to bottom.

10. The stroller of claim 1, wherein: the transverse support assembly further comprises a handle assembly, the handle assembly comprises a handle seat in the middle and handle bars arranged on the left side and the right side of the handle seat respectively, one end of each handle bar is rotationally connected with a corresponding side part of the handle seat, and the other end of each handle bar is rotationally connected with the upper part of the push rod assembly on the corresponding side.