Strollers

Abstract

The present invention discloses a child stroller, comprising a first side bracket and a second side bracket respectively arranged on the left and right sides, and a transverse bracket connected between the first side bracket and the second side bracket, the transverse bracket comprising a first connecting rod and a second connecting rod, the first connecting rod having a first end and a second end respectively arranged at two different ends in the length direction of the first connecting rod, the second connecting rod having a third end and a fourth end respectively arranged at two different ends in the length direction of the second connecting rod, the first end being rotatably connected to the first side bracket, the second end being rotatably connected to the second side bracket; the third end being rotatably connected to the first side bracket, the fourth end being rotatably connected to the second side bracket; the first connecting rod being rotatably connected to the second connecting rod. The child stroller provided by the present invention can realize the lateral folding of the two side brackets in the left and right directions, and at the same time significantly enhance the rigidity and stability of the child stroller when it is unfolded, and reduce the bumping and shaking of the child stroller when it is pushed and used.

Description

Technical Field

[0001] The invention relates to the field of children's products, in particular to a children's stroller. Background Art

[0002] Strollers on the market are usually foldable. After folding, the frame height is lowered and folded together front and back, and the overall volume is reduced, making it easier to store and carry. In order to further reduce the folding volume of the stroller, some frames are designed to be foldable in the left and right directions, wherein the transverse connecting rods between the two side brackets are broken into multiple short rods, which can be rotated and folded together during the folding process, so that the left and right side brackets are close to each other, and the frame has a smaller width after folding. For the above-mentioned strollers that can be folded left and right, there is often a problem of unstable frame structure. During the process of pushing and using the stroller, the frame is subjected to the gravity load of the child riding on it, and there is no complete rigid connecting rod between the left and right side brackets, which is prone to obvious shaking and bumping, resulting in a poor riding experience for the child and shortening the service life of the stroller. Summary of the invention

[0003] The purpose of the present invention is to provide a child stroller with stronger structural rigidity in view of the problems existing in the prior art.

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

[0005] A child stroller comprises a first side bracket and a second side bracket respectively arranged on left and right sides, and a cross bracket connected between the first side bracket and the second side bracket, the cross bracket comprises a first connecting rod and a second connecting rod, the first connecting rod has a first end and a second end respectively arranged at two different ends in its length direction, the second connecting rod has a third end and a fourth end respectively arranged at two different ends in its length direction, the first end is rotatably connected to the first side bracket, and the second end is rotatably connected to the second side bracket; the third end is rotatably connected to the first side bracket, and the fourth end is rotatably connected to the second side bracket; the first connecting rod is rotatably connected to the second connecting rod.

[0006] In some embodiments, the child stroller has a folded state and an unfolded state. When the child stroller is in the unfolded state, the cross support extends in the left-right direction, and the first side support and the second side support are spaced apart in the left-right direction; when the child stroller is in the folded state, the cross support is retracted in the left-right direction, and the first side support and the second side support are close to each other in the left-right direction.

[0007] In some embodiments, when the stroller is converted from an unfolded state to a folded state, the first end and the fourth end are close to each other, the second end and the third end are close to each other, the first end and the third end are away from each other, and the second end and the fourth end are away from each other.

[0008] In some embodiments, the first end portion is spaced apart from the third end portion, and the second end portion is spaced apart from the fourth end portion.

[0009] In some embodiments, the child stroller has a folded state and an unfolded state. When the child stroller is in the unfolded state, the first end is located above the third end, and the fourth end is located above the second end; and / or the first end is located behind the third end, and the fourth end is located behind the second end.

[0010] In some embodiments, the first side bracket and the second side bracket are symmetrically arranged with respect to a first virtual plane, and the first virtual plane extends in the front-to-back direction; the first end and the fourth end are symmetrically arranged with respect to the first virtual plane, and the second end and the third end are symmetrically arranged with respect to the first virtual plane, and the rotational connection between the first connecting rod and the second connecting rod intersects with the first virtual plane, and the first end and the second end are symmetrically arranged with respect to the rotational connection, and the third end and the fourth end are symmetrically arranged with respect to the rotational connection.

[0011] In some embodiments, the first end is rotationally connected to the first side bracket around a first axis, the second end is rotationally connected to the second side bracket around a second axis, the third end is rotationally connected to the first side bracket around a third axis, the fourth end is rotationally connected to the second side bracket around a fourth axis, the first connecting rod is rotationally connected to the second connecting rod around a fifth axis, and the first axis, the second axis, the third axis, the fourth axis, and the fifth axis are parallel to each other.

[0012] In some embodiments, there is a second virtual plane, the first end, the second end, the third end and the fourth end all intersect with the second virtual plane, and the first axis line, the second axis line, the third axis line, the fourth axis line and the fifth axis line are respectively perpendicular to the second virtual plane.

[0013] In some embodiments, the first side bracket and the second side bracket are symmetrically arranged in the left-right direction, the first side bracket includes a first rod and a second rod, the second side bracket includes another group of first rods and second rods symmetrically arranged, the first end is rotatably connected to the first rod of the first side bracket, and the second end is rotatably connected to the second rod of the second side bracket; the third end is rotatably connected to the second rod of the first side bracket, and the fourth end is rotatably connected to the first rod of the second side bracket.

[0014] In some embodiments, the child stroller has a folded state and an unfolded state. When the child stroller is in the unfolded state, each of the first side bracket and the second side bracket includes: a front bracket, a front wheel assembly is provided at the bottom of the front bracket; a rear bracket, a rear wheel assembly is provided at the bottom of the rear bracket; a first strut, two of the lower part of the first strut, the upper part of the rear bracket and the upper part of the front bracket are rotatably connected, and the third is rotatably connected to at least one of the first two; a push rod, the push rod is rotatably connected to the first strut; a second strut, the upper part of the second strut is rotatably connected to the push rod, and the lower part of the second strut is rotatably connected to the rear bracket; a front connecting rod, one end of the front connecting rod is rotatably connected to the front bracket, and the other end of the front connecting rod is rotatably connected to the second strut; wherein, the second strut is the first rod member, and the rear bracket is the second rod member.

[0015] Due to the application of the above technical solution, in the child stroller provided by the present invention, the rigid first connecting rod and the second connecting rod are rotatably connected to the first side bracket and the second side bracket respectively through multiple rotation points, and can be flexibly rotated and folded to achieve the lateral folding of the two side brackets in the left and right directions. The horizontal bracket will not affect the folding of the two side brackets themselves, and can be folded together with the frame as a whole, greatly reducing the folded volume of the child stroller. At the same time, it can significantly enhance the rigidity and stability of the child stroller when it is unfolded, reduce the bumps and shaking when the child stroller is pushed and used, provide a more comfortable riding experience for children, and further extend the service life of the child stroller. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the present invention, the following briefly introduces the drawings required for describing the embodiments.

[0017] Attached Figure 1 It is a three-dimensional schematic diagram of a child stroller in an unfolded state according to a specific embodiment of the present invention;

[0018] Attached Figure 2 is a side view schematic diagram of the child stroller in the unfolded state in this embodiment;

[0019] Attached Figure 3This is a schematic front view of the child stroller in the unfolded state in this embodiment;

[0020] Attached Figure 4 is a three-dimensional schematic diagram of the child stroller in the folding process in this embodiment;

[0021] Attached Figure 5 This is a schematic front view of the child stroller in the folding process of this embodiment;

[0022] Attached Figure 6 is a three-dimensional schematic diagram of the child stroller in the folded state in this embodiment;

[0023] Attached Figure 7 This is a schematic front view of the child stroller in the folded state in this embodiment;

[0024] Wherein: 100, first side bracket; 200, second side bracket; 300, cross bracket; 310, first connecting rod; 311, first end; 312, second end; 320, second connecting rod; 321, third end; 322, fourth end; 330, first front rod; 340, second front rod; 350, first rear rod; 360, second rear rod; 370, gripping rod; 1, front bracket; 11, front wheel assembly; 2, rear bracket; 21, Rear wheel assembly; 22, upper extension; 23, second connection; 3, first support rod; 4, push rod; 41, push rod lower section; 5, second support rod; 51, front extension; 52, first connection; 6, front connecting rod; 7, seat rod; 71, lower extension; 8, sliding sleeve; 1001, first axis; 1002, second axis; 1003, third axis; 1004, fourth axis; 1005, fifth axis; 101, first virtual plane. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present invention are described in detail 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.

[0026] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms “center”, “upper”, “lower”, “left”, “right”, “vertical”, “horizontal”, “inner”, “outer”, “left-right direction”, “height direction”, “front-back direction”, etc. are based on the attached Figure 1 The orientation or positional relationship observed by a child when the child normally rides in the stroller is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, only have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation of the present invention.

[0027] See also Figures 1 to 3As shown, this embodiment provides a child stroller with a folded state and an unfolded state, including a first side bracket 100 and a second side bracket 200 respectively arranged on the left and right sides, and a cross bracket 300 connected between the first side bracket 100 and the second side bracket 200. Figure 1 and Figure 6 As shown, when the child stroller is in the unfolded state, the cross bracket 300 extends in the left-right direction, and the first side bracket 100 and the second side bracket 200 are spaced apart and relatively far away from each other in the left-right direction; when the child stroller is in the folded state, the cross bracket 300 is retracted in the left-right direction, and the first side bracket 100 and the second side bracket 200 are close to each other in the left-right direction, so that the width of the child stroller is smaller after folding.

[0028] See also Figures 1 to 3 As shown, in this embodiment, the first side bracket 100 and the second side bracket 200 are symmetrically arranged along the left-right direction, specifically, symmetrically arranged about the first virtual plane 101, and the first virtual plane 101 extends along the front-back direction. Each of the first side bracket 100 and the second side bracket 200 includes a front bracket 1, a rear bracket 2, a first support rod 3, a push rod 4, a second support rod 5 and a front connecting rod 6. Among them, when the child stroller is in the unfolded state, the front bracket 1 gradually extends upward from the front to the back, and the rear bracket 2 gradually extends downward from the front to the back. The bottom of the front bracket 1 is provided with a front wheel assembly 11, and the bottom of the rear bracket 2 is provided with a rear wheel assembly 21. The first support rod 3 gradually extends upward from the front to the back, and two of the lower part of the first support rod 3, the upper part of the rear bracket 2, and the upper part of the front bracket 1 are rotatably connected, and the third is rotatably connected to at least one of the first two. In this embodiment, the upper end of the rear bracket 2 has an upper extension 22 extending backward and upward, the upper end of the front bracket 1 is rotatably connected to the upper end of the rear bracket 2, and the lower end of the first support rod 3 is rotatably connected to the upper extension 22. The push rod 4 gradually extends upward from the front to the back, and the extension direction of the push rod 4 is roughly parallel or colinear with the extension direction of the first support rod 3. The push rod 4 is rotatably connected to the first support rod 3, and specifically, the lower part of the push rod 4 is rotatably connected to the upper end of the first support rod 3. In this embodiment, the lower part of the push rod 4 has a push rod lower section 41, and the push rod lower section 41 is located below the rotation connection part between the push rod 4 and the first support rod 3. The second support rod 5 extends as a whole in the up-down direction, the upper part of the second support rod 5 is rotatably connected to the push rod 4, and the lower part of the second support rod 5 is rotatably connected to the rear bracket 2. In this embodiment, specifically, the upper end of the second support rod 5 is rotatably connected to the lower end of the push rod lower section 41, and the lower part of the second support rod 5 also has a front extension 51 extending forward. The front link 6 extends in the front-to-back direction, one end of the front link 6 is rotatably connected to the front bracket 1, and the other end of the front link 6 is rotatably connected to the second support rod 5. In this embodiment, the front link 6 specifically extends in an arc shape from front to back, the front end of the front link 6 is rotatably connected to the front bracket 1, and the rear end of the front link 6 is rotatably connected to the front end of the front extension 51.

[0029] See also Figures 1 to 3 As shown, the first side bracket 100 and the second side bracket 200 in this embodiment further include a seat rod 7 and a sliding sleeve 8, respectively. When the stroller is in the unfolded state, the seat rod 7 as a whole extends in the front-to-back direction, and the rear end of the seat rod 7 has a lower extension portion 71 extending downward, and the lower end of the lower extension portion 71 is rotatably connected to the second support rod 5 on the same side. The sliding sleeve 8 is rotatably connected to the first support rod 3, and the seat rod 7 can be relatively slidably connected to the sliding sleeve 8 along its own axial direction.

[0030] It should be noted that, in each of the first side bracket 100 and the second side bracket 200, the rotation axis between any two parts rotatably connected to each other extends along the left-right direction of the stroller, thereby enabling the entire first side bracket 100 or the entire second side bracket 200 to be folded in a linked manner.

[0031] See also Figures 1 to 3 As shown, the cross bracket 300 at least includes a first connecting rod 310 and a second connecting rod 320. The first connecting rod 310 has a first end 311 and a second end 312 respectively arranged at two different ends in the length direction of the first connecting rod 310, and the second connecting rod 320 has a third end 321 and a fourth end 322 respectively arranged at two different ends in the length direction of the second connecting rod. The first end 311 is rotatably connected to the first side bracket 100, and the second end 312 is rotatably connected to the second side bracket 200; the third end 321 is rotatably connected to the first side bracket 100, and the fourth end 322 is rotatably connected to the second side bracket 200. In addition, the first connecting rod 310 is rotatably connected to the second connecting rod 320, and the rotation connection between the first connecting rod 310 and the second connecting rod 320 is located between the first side bracket 100 and the second side bracket 200 in the left-right direction. In this embodiment, the first end 311 is rotationally connected to the first side bracket 100 around the first axis 1001, the second end 312 is rotationally connected to the second side bracket 200 around the second axis 1002, the third end 321 is rotationally connected to the first side bracket 100 around the third axis 1003, the fourth end 322 is rotationally connected to the second side bracket 200 around the fourth axis 1004, and the first connecting rod 310 and the second connecting rod 320 are rotationally connected around the fifth axis 1005. The first axis 1001, the second axis 1002, the third axis 1003, the fourth axis 1004, and the fifth axis 1005 are parallel to each other.

[0032] In this embodiment, on one side of the first side bracket 100, the first end 311 and the third end 321 are spaced apart; on one side of the second side bracket 200, the second end 312 and the fourth end 322 are spaced apart. When the stroller is in the unfolded state, the first end 311 is located above the third end 321, and the fourth end 322 is located above the second end 312; and / or, the first end 311 is located behind the third end 321, and the fourth end 322 is located behind the second end 312. In this embodiment, specifically, the first end 311 is located above and behind the third end 321, and the fourth end 322 is located above and behind the second end 312. In this embodiment, when the stroller is in the unfolded state, the side where the first side bracket 100 is located is the right side, and the side where the second side bracket 200 is located is the left side, the first connecting rod 310 gradually extends from front to back to the upper left, and the second connecting rod 320 gradually extends from front to back to the upper right. As can be seen from the accompanying drawings, the first link 310 and the second link 320 in this embodiment do not extend strictly in a straight line, and both have multiple bends and turns in their respective axial directions, thereby avoiding interference during the rotation and folding of the first link 310 and the second link 320. In the left-right direction, the first link 310 gradually bends inward at the first end 311 and the second end 312, and the second link 320 gradually bends inward at the third end 321 and the fourth end 322, so that the first link 310 and the second link 320 can better fit the first side bracket 100 and the second side bracket 200, so that the child stroller has a smaller width after folding. In this embodiment, there is a second virtual plane (not shown in the figure), and the first end 311, the second end 312, the third end 321 and the fourth end 322 all intersect with the second virtual plane, and the first axis 1001, the second axis 1002, the third axis 1003, the fourth axis 1004 and the fifth axis 1005 are respectively perpendicular to the second virtual plane. In this embodiment, when the child stroller is in the unfolded state, the second virtual plane gradually extends upward from the front to the back, so the first axis 1001 and the like gradually extend downward from the front to the back.

[0033] See also Figure 3As shown, in this embodiment, the first end 311 and the fourth end 322 are symmetrically arranged with respect to the first virtual plane 101, and the second end 312 and the third end 321 are symmetrically arranged with respect to the first virtual plane 101. The rotation connection between the first connecting rod 310 and the second connecting rod 320 intersects with the first virtual plane 101, the first end 311 and the second end 312 are symmetrically arranged with respect to the rotation connection, and the third end 321 and the fourth end 322 are symmetrically arranged with respect to the rotation connection. In other words, the first connecting rod 310 is rotationally connected at the midpoint position with the midpoint position of the second connecting rod 320. This makes the cross bracket 300 more symmetrical in the front-back and left-right directions, and the force is more uniform and stable.

[0034] See also Figures 1 to 3 As shown, the first side bracket 100 includes a first rod and a second rod, and the second side bracket 200 includes another set of first rods and second rods symmetrically arranged. The first end 311 is rotatably connected to the first rod of the first side bracket 100, and the second end 312 is rotatably connected to the second rod of the second side bracket 200; the third end 321 is rotatably connected to the second rod of the first side bracket 100, and the fourth end 322 is rotatably connected to the first rod of the second side bracket 200. In this embodiment, the second support rod 5 is specifically selected as the first rod, and the rear bracket 2 is the second rod. The upper part of the second support rod 5 on each side is rotatably connected to the first connecting rod 310 or the second connecting rod 320, and the upper end of the rear bracket 2 on each side is rotatably connected to the first connecting rod 310 or the second connecting rod 320. In other embodiments, the first rod and the second rod can also be selected from other different rods, which can achieve the effect of enhancing the rigidity of the frame without interfering with the overall folding of the child stroller. Furthermore, in some embodiments, the structures of the first side bracket 100 and the second side bracket 200 that are completely different from those in this embodiment may also be adopted. In this case, those skilled in the art may select the first rod and the second rod for connecting the first connecting rod 310 and the second connecting rod 320 according to actual conditions. Figures 1 to 3 As shown, in this embodiment, along the left-right direction, the upper part of the second support rod 5 on each side has a first connecting portion 52 protruding inwardly, and the upper end of the rear bracket 2 on each side has a second connecting portion 23 protruding inwardly, which is used for rotational connection with an end corresponding to the first connecting rod 310 or the second connecting rod 320.

[0035] See also Figure 1 and Figure 3As shown, in this embodiment, the cross support 300 also includes a first front rod 330 and a second front rod 340 disposed between the front supports 1 on both sides, and a first rear rod 350 and a second rear rod 360 disposed between the rear supports 2 on both sides. Among them, one end of the first front rod 330 is rotatably connected to the front support 1 of the first side support 100, one end of the second front rod 340 is rotatably connected to the front support 1 of the second side support 200, and the other end of the first front rod 330 is rotatably connected to the other end of the second front rod 340. One end of the first rear rod 350 is rotatably connected to the rear support 2 of the first side support 100, one end of the second rear rod 360 is rotatably connected to the rear support 2 of the second side support 200, and the other end of the first rear rod 350 is rotatably connected to the other end of the second rear rod 360. In this way, the first front rod 330 and the second front rod 340 can realize the expansion and folding of the front supports 1 on both sides by relative rotation, and the first rear rod 350 and the second rear rod 360 can realize the expansion and folding of the rear supports 2 on both sides by relative rotation.

[0036] See also Figure 1 and Figure 3 As shown, in this embodiment, the cross bracket 300 further includes a gripping link 370 disposed between the push rods 4 on both sides. When the child stroller is in the unfolded state, the gripping link 370 extends in the left-right direction, and in the left-right direction, the upper portion of the push rod 4 on each side gradually bends and extends inward from bottom to top, and the upper end of the push rod 4 on each side is rotatably connected to the end of the gripping link 370 on the same side, and the rotation centerline of the two extends in the up-down direction, specifically parallel to the axial direction of the push rod 4 body, so that the push rods 4 on both sides and the gripping link 370 can be folded left and right.

[0037] See also Figure 4 and Figure 5 As shown, in this embodiment, when the child stroller is converted from the unfolded state to the folded state, the first side bracket 100 and the second side bracket 200 are folded separately and synchronously, and the horizontal bracket 300 is folded together in the left and right directions, so that the first side bracket 100 and the second side bracket 200 are close to each other in the left and right directions. Among them, the first connecting rod 310 and the second connecting rod 320 rotate relative to each other around the fifth axis 1005, the first end 311 and the fourth end 322 are close to each other, the second end 312 and the third end 321 are close to each other, and the first end 311 and the third end 321 are away from each other, and the second end 312 and the fourth end 322 are away from each other. At the same time, the rotation connection between the first front rod 330 and the second front rod 340 moves upward, so that the two rotate and fold; the rotation connection between the first rear rod 350 and the second rear rod 360 moves upward, so that the two rotate and fold; the push rods 4 on both sides rotate backward relative to the gripping rod 370 respectively, and fold together at the rear side of the gripping rod 370.

[0038] See also Figure 4 and Figure 5 As shown, when the baby stroller is converted from the unfolded state to the folded state, in each of the first side bracket 100 and the second side bracket 200, the push rod 4 is first driven to move downward, and the push rod 4 rotates forward relative to the first support rod 3 and retracts, driving the first support rod 3 and the second support rod 5 to flip backward and retract toward the rear support 2. In this process, the movement of the second support rod 5 is transmitted to the front connecting rod 6 through the front extension 51, and then the front support 1 and the rear support 2 are pulled together through the front connecting rod 6. At the same time, since the upper parts of the first support rod 3 and the second support rod 5 are relatively far apart, while driving the seat rod 7 to rotate, the sliding sleeve 8 slides upward along the seat rod 7, and the sliding sleeve 8 and the lower extension 71 of the seat rod 7 gradually move away, so that the seat rod 7 can also be retracted between the first support rod 3 and the second support rod 5.

[0039] The folding process of the first side bracket 100 and the second side bracket 200 reacts to the first connecting rod 310 and the second connecting rod 320: since the second support rod 5 flips backward relative to the rear bracket 2, the first end 311 of the first connecting rod 310 and the fourth end 322 of the second connecting rod 320 both move backward and downward, while the third end 321 and the second end 312 move upward relatively, and the first end 311 and the fourth end 322 move synchronously to below the third end 321 and the second end 312.

[0040] See also Figure 6 and Figure 7 As shown, in this embodiment, when the child stroller is in a folded state, the first connecting rod 310 and the second connecting rod 320 extend in the up-down direction respectively, and the front bracket 1, the rear bracket 2, the first support rod 3, the push rod 4, the second support rod 5, the front connecting rod 6, the seat rod 7, etc. on each side also extend in the up-down direction respectively and are compactly gathered together. At this time, the second virtual plane is converted to extend gradually downward from the front to the back, and the overall length, height and width of the child stroller are significantly reduced, and the front wheel assembly 11 and the rear wheel assembly 21 on both sides can be supported on the ground at the same time to achieve folding and self-supporting.

[0041] In summary, the child stroller provided in this embodiment has no interference between the various rods, and can be easily and quickly folded horizontally to obtain an extremely small folded volume, and can also have high structural rigidity and strength in the unfolded state, reducing the shaking and bumping of the frame and providing a better user experience.

[0042] 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 baby stroller, comprising a first side bracket and a second side bracket respectively arranged on left and right sides, and a transverse bracket connected between the first side bracket and the second side bracket, characterized in that: The child stroller has a folded state and an unfolded state. When the child stroller is in the unfolded state, each of the first side bracket and the second side bracket includes: A front bracket, wherein a front wheel assembly is provided at the bottom of the front bracket; A rear support, wherein a rear wheel assembly is provided at the bottom of the rear support; A first support rod, wherein two of the lower portion of the first support rod, the upper portion of the rear support, and the upper portion of the front support are rotatably connected, and the third is rotatably connected to at least one of the first two; A push rod, the push rod being rotatably connected to the first support rod; a second support rod, wherein the upper portion of the second support rod is rotatably connected to the push rod, and the lower portion of the second support rod is rotatably connected to the rear bracket; A front connecting rod, one end of which is rotatably connected to the front bracket, and the other end of which is rotatably connected to the second support rod; The cross support includes a first connecting rod and a second connecting rod, wherein the first connecting rod has a first end and a second end respectively arranged at two different ends in the length direction of the first connecting rod, and the second connecting rod has a third end and a fourth end respectively arranged at two different ends in the length direction of the second connecting rod. The first end is rotatably connected to the second support rod of the first side bracket, and the second end is rotatably connected to the rear support of the second side bracket; the third end is rotatably connected to the rear support of the first side bracket, and the fourth end is rotatably connected to the second support rod of the second side bracket; The first connecting rod is rotatably connected to the second connecting rod; when the stroller is in an unfolded state, the transverse support extends in the left-right direction, the first side support and the second side support are spaced apart in the left-right direction, the first end is located above and behind the third end, and the fourth end is located above and behind the second end; when the stroller is in a folded state, the transverse support is folded in the left-right direction, the first side support and the second side support are close to each other in the left-right direction, the first end is located below the third end, and the fourth end is located below the second end. There is a second virtual plane, and the first end, the second end, the third end, and the fourth end all intersect with the second virtual plane. When the baby stroller is in an unfolded state, the second virtual plane gradually extends upward from the front to the back; when the baby stroller is in a folded state, the second virtual plane is converted to gradually extend downward from the front to the back.

2. The baby stroller according to claim 1, characterized in that: When the baby stroller is converted from the unfolded state to the folded state, the first end and the fourth end are close to each other, the second end and the third end are close to each other, the first end and the third end are far away from each other, and the second end and the fourth end are far away from each other.

3. The baby stroller according to claim 1, characterized in that: The first end portion is spaced apart from the third end portion, and the second end portion is spaced apart from the fourth end portion.

4. The baby stroller according to claim 1, characterized in that: The first side bracket and the second side bracket are symmetrically arranged with respect to a first virtual plane, and the first virtual plane extends along the front-to-back direction; the first end and the fourth end are symmetrically arranged with respect to the first virtual plane, and the second end and the third end are symmetrically arranged with respect to the first virtual plane, and the rotation connection between the first connecting rod and the second connecting rod intersects with the first virtual plane, and the first end and the second end are symmetrically arranged with respect to the rotation connection, and the third end and the fourth end are symmetrically arranged with respect to the rotation connection.

5. The baby stroller according to claim 1, characterized in that: The first end is connected to the first side bracket for rotation around a first axis, the second end is connected to the second side bracket for rotation around a second axis, the third end is connected to the first side bracket for rotation around a third axis, the fourth end is connected to the second side bracket for rotation around a fourth axis, the first connecting rod is connected to the second connecting rod for rotation around a fifth axis, and the first axis, the second axis, the third axis, the fourth axis, and the fifth axis are parallel to each other.

6. The stroller according to claim 5, characterized in that: The first axis, the second axis, the third axis, the fourth axis, and the fifth axis are respectively perpendicular to the second virtual plane.

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