CN108528511B

CN108528511B - Child cart

Info

Publication number: CN108528511B
Application number: CN201810575906.4A
Authority: CN
Inventors: 胡承鹏; 邓征华; 杨青
Original assignee: Hubei Yangtian Plastic Products Co ltd
Current assignee: Hubei Yangtian Plastic Products Co ltd
Priority date: 2018-06-06
Filing date: 2018-06-06
Publication date: 2024-06-21
Anticipated expiration: 2038-06-06
Also published as: CN108528511A

Abstract

The invention relates to the field of children carts, and aims to solve the problems that the structure is complex and huge, the folding process is difficult, and the volume cannot be effectively reduced after folding in the prior art; each side bracket comprises a front support leg, a rear support leg and a push handle; the front support leg comprises a front support rod; the rear support leg comprises an upper support rod, a middle support rod and a lower support rod, wherein the first end of the lower support rod is fixedly connected with the middle part of the middle support rod to form a Y-shaped structure; the two ends of the middle supporting rod are respectively and rotatably connected with the first end of the front supporting rod and the first end of the upper supporting rod; the second end of the upper supporting rod is rotatably connected with the middle part of the push handle; the upper support rod and the front support rod can be respectively folded towards the lower support rod, the push handle is folded towards the lower support rod along with the upper support rod, and the seat is driven to be folded towards the upper support rod. After folding, each part in two side brackets of children's shallow effectively folds the laminating, effectively reduces the space of part each other, makes the volume after folding littleer, portable.

Description

Child cart

Technical Field

The invention relates to the field of child carts, in particular to a child cart.

Background

The existing child strollers can be unfolded and folded, but have the following disadvantages:

1. The unfolding and folding structure is complex, and the unfolding and folding operation is difficult;

2. The whole structure is complex and huge, and the volume after folding can not be effectively reduced.

Disclosure of Invention

The invention aims to provide a child stroller, which solves the problems that the structure is complex and huge, the folding process is difficult, and the volume after folding cannot be effectively reduced in the prior art.

Embodiments of the present invention are implemented as follows:

the embodiments of the present invention provide a stroller,

The device comprises two side brackets and a transverse bracket, wherein the two side brackets are arranged at intervals and are connected through the transverse bracket;

each side bracket comprises a front support leg, a rear support leg and a push handle;

The front support leg comprises a front support rod; the rear support leg comprises an upper support rod, a middle support rod and a lower support rod, the first end of the lower support rod is fixedly connected with the middle part of the middle support rod to form a Y-shaped structure, and the second end of the lower support rod is provided with a rear wheel group; the two ends of the middle supporting rod are respectively and rotatably connected with the first end of the front supporting rod and the first end of the upper supporting rod, the first end of the middle supporting rod can be fixed at a first preset position relative to the first end of the front supporting rod, and the second end of the middle supporting rod can be fixed at a second preset position relative to the first end of the upper supporting rod; the second end of the upper support rod is rotatably connected with the middle part of the push handle, and can be fixed at a third preset position relative to the middle part of the push handle;

The transverse support comprises a seat arranged between the two side supports, two ends of the seat are respectively hinged between the first end of the push handle and the middle part of the upper supporting rod, and two ends of the seat can be fixed at a fourth preset position relative to the first end of the push handle and the middle part of the upper supporting rod.

In one implementation of the present embodiment:

Each side bracket further comprises a linkage assembly;

the linkage assembly comprises a seat rod, a first swing rod and a second swing rod;

The seat rod is rotatably connected with the upper supporting rod and can be fixed relative to the upper supporting rod, the first swing rod is rotatably connected with the lower supporting rod and can be fixed relative to the lower supporting rod, and the second swing rod is rotatably connected with the front supporting rod and can be fixed relative to the front supporting rod;

The first end of the sitting rod is rotatably connected with the first end of the pushing handle and can be fixed, the second end of the sitting rod is rotatably connected with the first end of the first swing rod and can be fixed, and the second end of the first swing rod is rotatably connected with the second swing rod and can be fixed;

The two ends of the seat are respectively and rotatably connected with the seat rod through a third connecting lug.

In one implementation of the present embodiment:

The sitting rod comprises a flat section and a descending section which are connected in a smooth transition manner, the first end of the pushing handle and the middle part of the upper supporting rod are both rotatably connected with the flat section, and the descending section is rotatably connected with the first swinging rod;

the first swing rod comprises an ascending section and a bending section which are connected in a smooth transition mode, the ascending section and the descending section are rotatably connected, and the bending section is rotatably connected with the second swing rod.

In one implementation of the present embodiment:

The pushing handle comprises an upper push rod and a lower push rod, the upper push rod and the lower push rod are rotatably connected, and the upper push rod can be fixed relative to the lower push rod.

In one implementation of the present embodiment:

The transverse bracket further comprises a front transverse strut and two first connecting lugs, the front transverse strut is arranged between the two side brackets, the two first connecting lugs are symmetrically arranged at two ends of the front transverse strut, the two first connecting lugs are arranged between the two side brackets, and the first connecting lugs are of an L-shaped structure;

Each first connecting lug is fixedly connected with the front supporting rod, and the other end of each first connecting lug is rotatably connected with one end of the front transverse supporting rod and can be fixed.

In one implementation of the present embodiment:

The transverse bracket further comprises a rear transverse strut and two second connecting lugs, the rear transverse strut is positioned between the two side brackets, the two second connecting lugs are symmetrically arranged at two ends of the rear transverse strut, the two second connecting lugs are positioned between the two side brackets, and the second connecting lugs are of an L-shaped structure;

each second connecting lug is fixedly connected with the lower supporting rod, and the other end of each second connecting lug is rotatably connected with one end of the rear transverse supporting rod and can be fixed.

In one implementation of the present embodiment:

the front transverse strut is provided with a first long groove along the length direction thereof, and two first connecting lugs are respectively connected to the two ends of the first long groove in a rotating way and can be embedded into the first long groove in a rotating way;

the rear transverse strut is provided with a second long groove along the length direction of the rear transverse strut, and the two second connecting lugs are respectively connected to the two ends of the second long groove in a rotating mode and can be embedded into the second long groove in a rotating mode.

In one implementation of the present embodiment:

The transverse bracket also comprises a transverse pushing rod connected with the two pushing handles;

The second end of the pushing handle is provided with a fourth connecting lug, and two ends of the transverse pushing rod are respectively connected with the pushing handle through the fourth connecting lug.

In one implementation of the present embodiment:

The middle supporting rod is arc-shaped;

one end of the middle supporting rod extends downwards and the front supporting rod is connected with the middle supporting rod in a rotating way, and one end of the middle supporting rod extends upwards and is connected with the upper supporting rod in a rotating way.

In one implementation of the present embodiment:

the child cart further comprises two handle bars;

The two handle bars are respectively arranged on the upper sides of the second ends of the push handles and are arranged along the direction vertical to the plane where the two push handles are positioned.

The beneficial effects of the application are as follows: the folding operation of the child cart provided by the application is simple and convenient, the parts of the folded cart frame are better in fit, the gaps among the parts are smaller, and the child cart is convenient to carry.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic side view of a stroller in an unfolded state according to an embodiment of the present invention;

FIG. 2 is an isometric view of a stroller in an expanded state according to an embodiment of the present invention;

FIG. 3 is a schematic side view of a stroller in a folded condition according to an embodiment of the present invention;

FIG. 4 is a schematic side view of a stroller in a first folded state according to an embodiment of the present invention;

FIG. 5 is an isometric view of a stroller in a first collapsed configuration according to an embodiment of the present invention;

Fig. 6 is a schematic top view of a stroller in a first folded state according to an embodiment of the present invention;

Fig. 7 is a schematic top view of a stroller in a first folded state to a second folded state according to an embodiment of the present invention;

Fig. 8 is a schematic top view of a stroller in a second folded state according to an embodiment of the present invention;

fig. 9 is a schematic bottom view of a stroller in a second folded state according to an embodiment of the present invention;

fig. 10 is a schematic front view of a stroller in a second folded state according to an embodiment of the present invention;

Fig. 11 is a schematic side view of a stroller in a second folded state according to an embodiment of the present invention.

Icon: 1-side brackets; 2-front support legs; 21-front wheel set; 22-front struts; 3-rear support legs; 31-middle support rod; 32-a lower strut; 33-upper struts; 34-rear wheelset; 4, pushing the handle; 41-push rod; 42-pushing down the rod; 8-a transverse bracket; 81-front cross struts; 811-a first elongate slot; a1-a first connection lug; 82-rear cross struts; 821-a second elongated slot; a2-a second connecting lug; 83-seating; 84-a transverse pushing rod; a3-a third connecting ear; a4-fourth connecting lugs; 9-linkage assembly; 5-sitting bar; 51-straight section; 52-a descent segment; 6-a first swing rod; 61-rising section; 62-bending the segment; 7-a second swing rod; 10-handle bar.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate an azimuth or a positional relationship based on that shown in the drawings, or an azimuth or a positional relationship in which the inventive product is conventionally put in use, it is merely for convenience of describing the present invention and simplifying the description, and it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like in the description of the present invention, if any, are used for distinguishing between the descriptions and not necessarily for indicating or implying a relative importance.

Furthermore, the terms "horizontal," "vertical," and the like in the description of the present invention, if any, do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

Embodiments, refer to fig. 1-11.

The embodiments of the present invention provide a stroller,

As shown in fig. 1 and 2, the device comprises two side brackets 1 and a transverse bracket 8, wherein the two side brackets 1 are arranged at intervals and are connected through the transverse bracket 8;

As shown in fig. 1, each side bracket 1 includes a front leg 2, a rear leg 3, and a push handle 4;

As shown in fig. 1, the front leg 2 includes a front strut 22; the rear support leg 3 comprises an upper support rod 33, a middle support rod 31 and a lower support rod 32, wherein a first end of the lower support rod 32 is fixedly connected with the middle part of the middle support rod 31 to form a Y-shaped structure, and a second end of the lower support rod 32 is provided with a rear wheel set 34; the two ends of the middle supporting rod 31 are respectively rotatably connected with the first end of the front supporting rod 22 and the first end of the upper supporting rod 33, the first end of the middle supporting rod 31 can be fixed at a first preset position relative to the first end of the front supporting rod 22, and the second end of the middle supporting rod 31 can be fixed at a second preset position relative to the first end of the upper supporting rod 33; the second end of the front supporting rod 22 is provided with a front wheel set 21, the second end of the upper supporting rod 33 is rotatably connected with the middle part of the push handle 4, and the second end of the upper supporting rod 33 can be fixed at a third preset position relative to the middle part of the push handle 4;

as shown in fig. 2, the cross bracket 8 includes a seat 83 provided between the two side brackets 1, both ends of the seat 83 are respectively hinged between the first end of the push handle 4 and the middle portion of the upper strut 33, and both ends of the seat 83 can be fixed at a fourth preset position with respect to the first end of the push handle 4 and the middle portion of the upper strut 33.

It should be noted that, in the present application, a similar to the expression "a and B are rotatably connected, and a can be fixed at a preset position relative to B", for example: "the second end of the upper strut 33 is rotatably connected to the middle part of the push handle 4, the second end of the upper strut 33 can be fixed at a third preset position relative to the middle part of the push handle 4", which means that a and B are rotatably connected, a and B have a common rotation center, and a and B can be relatively fixed in a circumferential range defined by the rotation center, and a specific fixed position, that is, an angle between a and B, can be set according to actual requirements. To achieve the function and effect, the rotating shafts can be connected with A and B, and relative fixation can be achieved by using friction force between the A and B and the rotating shafts; the rotation shafts can be used to connect A and B, and then the locking mechanism is used to realize the relative fixation of A and B, and other structures in the prior art can be used.

The child stroller provided by the application has an unfolded state and a folded state. In the unfolded state, as shown in fig. 2, after the stroller is unfolded, the front support bar 22 and the lower support bar 32 are respectively supported on the ground by the front wheel set 21 and the rear wheel set 34. The front strut 22, the upper strut 33 and the lower strut 32 are connected by the middle strut 31 to be unfolded at a certain angle, and the push handle 4 is unfolded obliquely from the rear upper side to the front lower side. The two side brackets 1 are positioned on two sides of the baby carriage, and the two side brackets 1 are unfolded through the transverse brackets 8.

When the stroller is folded, friction force is overcome, the locking mechanism is unlocked or other fixing mechanisms are adopted, as shown in fig. 3, when the stroller is folded, the push rod is pushed downwards to rotate the lower support rod 32, the push rod is rotated downwards to drive the upper support rod 33 to rotate towards the lower support rod 32 to be close, then the front support rod 22 is rotated towards the direction of the close lower support rod 32, so that the front support rod 22 is folded towards the lower support rod 32, the push handle 4, the front support rod 22 and the lower support rod 32 are folded together, after the stroller is folded, as shown in fig. 4, all parts in the two side supports 1 of the stroller are effectively folded and attached, gaps among the parts are effectively reduced, the folded size is smaller, and the stroller is convenient to carry.

In one implementation of the present embodiment:

referring again to FIG. 2, the central strut 31 is arcuate;

one end of the middle strut 31 extends downward and the front strut 22 is rotatably connected, and one end of the middle strut 31 extends upward and is rotatably connected with the upper strut 33.

A receiving space is formed between the upper strut 33 and the front strut 22 to push the load placed on the seat 83.

In one implementation of the present embodiment:

Referring to fig. 2, each side bracket 1 further includes a linkage assembly 9;

the linkage assembly 9 comprises a seat rod 5, a first swing rod 6 and a second swing rod 7;

The seat bar 5 is rotatably connected with the upper support bar 33 and can be fixed relative to the upper support bar 33, the first swing bar 6 is rotatably connected with the lower support bar 32 and can be fixed relative to the lower support bar 32, and the second swing bar 7 is rotatably connected with the front support bar 22 and can be fixed relative to the front support bar 22;

The first end of the sitting rod 5 is rotatably connected with the first end of the push handle 4 and can be fixed, the second end of the sitting rod 5 is rotatably connected with the first end of the first swing rod 6 and can be fixed, and the second end of the first swing rod 6 is rotatably connected with the second swing rod 7 and can be fixed;

both ends of the seat 83 are rotatably connected with the seat bar 5 through third connecting lugs a3, respectively.

Referring to fig. 3 again, the seat bar 5 moves downwards to drive the first end of the first swing bar 6 to rotate downwards and draw close to the lower bracket, the second end of the first swing bar 6 moves upwards and draw close to the lower bracket, the easy end of the second swing bar 7 moves upwards to drive the front strut 22 to move rightwards and draw close to the lower bracket, so that all parts of the frame draw close and fold, the final folding state in the lateral direction is as shown in fig. 4 and 5, at this time, the front bracket and the push handle 4 are respectively positioned on two sides of the lower bracket, and the upper bracket is positioned between the lower bracket and the push rod.

That is, the push handle 4 and the upper supporting rod 33 are driven by the sitting rod 5, the second swinging rod 7 is driven by the first swinging rod 6, and the front supporting rod 22 is driven by the second swinging rod 7, so that the folding process is completed rapidly.

It should be noted that: the seat 83, which is rotatably connected to the third connecting lug a3 on the seat post 5, is both a cross bracket 8 and provides the infant with a sitting function

In one implementation of the present embodiment:

Returning to fig. 2, the seat rod 5 comprises a flat section 51 and a descending section 52 which are connected in a smooth transition manner, the first end of the push handle 4 and the middle part of the upper supporting rod 33 are both rotatably connected with the flat section 51, and the descending section 52 is rotatably connected with the first swinging rod 6;

the first swing rod 6 comprises an ascending section 61 and a bending section 62 which are connected in a smooth transition manner, the ascending section 61 is rotatably connected with the descending section 52, and the bending section 62 is rotatably connected with the second swing rod 7.

The straight section 51 can support the seat 83, the descending section 52 can be matched with the ascending section 61 to support the push handle 4 and the upper support rod 33 when the stroller is unfolded, and the sitting rod 5 drives the front support rod 22 to be close to and folded. The curved section 62 serves to effect a connection between the intermediate angled front strut 22 and the lower strut 32.

With continued reference to fig. 2, in one implementation of the present embodiment:

the push handle 4 includes an upper push rod 41 and a lower push rod 42, the upper push rod 41 and the lower push rod 42 are rotatably connected, and the upper push rod 41 can be fixed relative to the lower push rod 42.

When the folding device is unfolded, the axial lines of the upper push rod 41 and the lower push rod 42 are overlapped, and when the folding device is folded, the folded gap between the upper push rod 41 and the lower support can be further reduced by folding at the rotating connection part of the upper push rod 41 and the lower push rod 42, so that the folding effect and efficiency are further improved.

Preferably, a frame locking mechanism is arranged between the upper push rod 41 and the lower push rod 42, the side bracket 1 can be locked when the side frame is unfolded, the frame locking mechanism is controlled by a locking switch on the handle bar 10, the frame locking mechanism is connected with the locking switch by a pull rope, and the locking mechanism is unlocked after the locking switch on the handle bar 10 is operated to be opened and locked. After the frame locking mechanism is unlocked, as shown in fig. 3, the upper push rod 41, the lower push rod 42, the upper support rod 33 and the seat rod 5 form a four-bar mechanism; the upper strut 33, the sitting strut 5, the middle strut 31, the lower strut 32 and the first swing link 6 form a four bar linkage.

As shown in fig. 2, in one implementation of the present embodiment:

the stroller further comprises two handle bars 10;

The two handle bars 10 are respectively arranged on the upper sides of the second ends of the push handles 4 and are arranged along the direction perpendicular to the plane in which the two push handles 4 lie.

The handle bar 10 can be held for operation during pushing the stroller and folding, which is simple and quick.

In one implementation of the present embodiment:

As shown in fig. 2, the cross bracket 8 further comprises a cross push rod 84 connecting the two push handles 4;

The second end of the push handle 4 is provided with a fourth connecting lug a4, and two ends of the transverse push rod 84 are respectively connected with the push handle 4 through the fourth connecting lug a 4.

Moving to fig. 6, through the fourth connecting lug a4, the two push rods can be folded towards the middle part, as shown in fig. 7 and 8, so as to reduce the distance between the two side brackets 1, and further reduce the whole volume of the folded stroller.

In one implementation of the present embodiment:

as shown in fig. 2, the cross bracket 8 further includes a front cross strut 81 located between the two side brackets 1 and two first connecting lugs a1 symmetrically disposed at two ends of the front cross strut 81, the two first connecting lugs a1 are located between the two side brackets 1, and the first connecting lugs a1 are in an L-shaped structure;

Each first connecting lug a1 is fixedly connected with the front strut 22, and the other end of each first connecting lug a1 is rotatably connected with one end of the front transverse strut 81 and can be fixed.

As shown in fig. 9 and 10, the front strut 22 and the push rod are located on both sides of the lower strut 32, respectively, and the upper strut 33 is located between the lower strut 32 and the push rod. The front struts 22 on the two sides are pushed inwards, and the two front struts 22 can drive the two first connecting lugs a1 to draw close to the middle, so that the two first connecting lugs a1 rotate and draw close to the middle until the front transverse struts 81 are propped against. The front strut 22 is further retracted, reducing the overall volume of the stroller.

In one implementation of the present embodiment:

As shown in fig. 2, the cross bracket 8 further includes a rear cross strut 82 located between the two side brackets 1 and two second connecting lugs a2 symmetrically disposed at two ends of the rear cross strut 82, the two second connecting lugs a2 are located between the two side brackets 1, and the second connecting lugs a2 are in an L-shaped structure;

each second connecting lug a2 is fixedly connected with the lower strut 32, and the other end of each second connecting lug a2 is rotatably connected with one end of the rear cross strut 82 and can be fixed.

As shown in fig. 9 and 10, after the two side brackets 1 are folded, as shown in fig. 6, the lower struts 32 on both sides are pushed inwards, and in the process of the two lower struts 32 being mutually closed, the two second connecting lugs a2 are driven to rotate and are closed until the second connecting lugs a2 are propped against the rear transverse strut 82 and cannot rotate continuously, so that the distance between the two lower struts 32 is further reduced, and the whole volume is further reduced.

In one implementation of the present embodiment:

As shown in fig. 2, the front cross bar 81 is provided with a first elongated groove 811 along its length direction, and two first coupling lugs a1 are rotatably coupled to both ends of the first elongated groove 811, respectively, and rotatably fitted into the first elongated groove 811;

As shown in fig. 2, the rear cross bar 82 is provided with a second elongated groove 821 along its length direction, and two second connection lugs a2 are respectively rotatably connected to both ends of the second elongated groove 821 and rotatably fitted into the second elongated groove 821.

As shown in fig. 9, in the process of folding the two first connection lugs a1 toward the middle, the two first connection lugs a1 can be clamped into the first elongated groove 811, so that the folding rotation angle of the first connection lugs a1 is increased, the distance between the two first connection lugs a1 is further reduced, and the distance between the two front struts 22 is further reduced.

Similarly, the second connecting lugs a2 are clamped into the second elongated grooves 821 after being folded, so that the space between the first connecting lugs a1 can be further reduced, that is, the space between the two lower struts 32 can be further reduced. To further reduce the overall folded volume.

In this way, the two side frames 1 can be folded toward the middle by the first, second, third, and fourth connecting lugs a1, a2, a3, and a 4. As shown in fig. 5, which is an isometric view of the side bracket 1 after being fully folded, the rotational axes of the front cross strut 81 and the first link a1, the rotational axes of the rear cross strut 82 and the second link a2, the rotational axes of the seat 83 and the third link a3, and the rotational axes of the cross push rod 84 and the fourth link a4 are on the same line. As shown in fig. 9, the push-up levers 41 on both sides are pushed inward, and the side frames 1 are folded toward each other around the rotational axes of the front cross strut 81 and the first link a1, the rotational axes of the rear cross strut 82 and the second link a2, the rotational axes of the seat 83 and the third link a3, and the rotational axes of the cross strut 84 and the fourth link a4, respectively, to a central position, and the final folded state is shown in fig. 10 and 11, in which the front strut 22, the lower strut 32, the upper strut 33, the middle strut 31, the front wheelset 21, and the rear wheelset 34 are located between the push-up levers on both sides.

The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A child stroller, characterized in that:

The device comprises two side brackets and a transverse bracket, wherein the two side brackets are arranged at intervals and are connected through the transverse bracket; each side bracket comprises a front support leg, a rear support leg and a push handle; the front support leg comprises a front support rod; the rear support leg comprises an upper support rod, a middle support rod and a lower support rod, the first end of the lower support rod is fixedly connected with the middle part of the middle support rod to form a Y-shaped structure, and the second end of the lower support rod is provided with a rear wheel group; the two ends of the middle supporting rod are respectively and rotatably connected with the first end of the front supporting rod and the first end of the upper supporting rod, the first end of the middle supporting rod can be fixed at a first preset position relative to the first end of the front supporting rod, and the second end of the middle supporting rod can be fixed at a second preset position relative to the first end of the upper supporting rod; the second end of the upper support rod is rotatably connected with the middle part of the push handle, and can be fixed at a third preset position relative to the middle part of the push handle; the transverse support comprises a seat arranged between the two side supports, two ends of the seat are respectively hinged between the first end of the push handle and the middle part of the upper supporting rod, and the two ends of the seat can be fixed at a fourth preset position relative to the first end of the push handle and the middle part of the upper supporting rod;

Each side bracket further comprises a linkage assembly; the linkage assembly comprises a seat rod, a first swing rod and a second swing rod; the seat rod is rotatably connected with the upper supporting rod and can be fixed relative to the upper supporting rod, the first swing rod is rotatably connected with the lower supporting rod and can be fixed relative to the lower supporting rod, and the second swing rod is rotatably connected with the front supporting rod and can be fixed relative to the front supporting rod; the first end of the sitting rod is rotatably connected with the first end of the pushing handle and can be fixed, the second end of the sitting rod is rotatably connected with the first end of the first swing rod and can be fixed, and the second end of the first swing rod is rotatably connected with the second swing rod and can be fixed; the two ends of the seat are respectively and rotatably connected with the sitting rod through a third connecting lug;

The sitting rod comprises a flat section and a descending section which are connected in a smooth transition manner, the first end of the pushing handle and the middle part of the upper supporting rod are both rotatably connected with the flat section, and the descending section is rotatably connected with the first swinging rod; the middle part between the straight section and the descending section is hinged with the upper supporting rod;

The first swing rod comprises an ascending section and a bending section which are connected in a smooth transition mode, the ascending section is rotatably connected with the descending section, the bending section is rotatably connected with the second swing rod, and the middle part between the ascending section and the bending section is hinged with the lower supporting rod.

2. The stroller of claim 1, wherein:

the pushing handle comprises an upper push rod and a lower push rod, the upper push rod is rotatably connected with the lower push rod, and the upper push rod can be fixed relative to the lower push rod.

3. The stroller of claim 1, wherein:

The transverse support further comprises a front transverse support rod positioned between the two side supports and two first connecting lugs symmetrically arranged at two ends of the front transverse support rod, the two first connecting lugs are positioned between the two side supports, and the first connecting lugs are of an L-shaped structure;

4. A stroller according to claim 3, wherein:

The transverse support further comprises a rear transverse support rod positioned between the two side supports and two second connecting lugs symmetrically arranged at two ends of the rear transverse support rod, the two second connecting lugs are positioned between the two side supports, and the second connecting lugs are of an L-shaped structure;

5. The stroller of claim 4, wherein:

The front transverse strut is provided with a first long groove along the length direction of the front transverse strut, and two first connecting lugs are respectively connected to two ends of the first long groove in a rotating mode and can be embedded into the first long groove in a rotating mode;

6. The stroller of claim 1, wherein:

the transverse support further comprises a transverse pushing rod connected with the two pushing handles;

7. The stroller of claim 1, wherein:

the middle supporting rod is arc-shaped;

One end of the middle supporting rod extends downwards and is rotationally connected with the front supporting rod, and one end of the middle supporting rod extends upwards and is rotationally connected with the upper supporting rod.

8. The stroller of claim 1, wherein:

the child stroller further comprises two handle bars;

the two handle bars are respectively arranged on the upper sides of the second ends of the push handles and are arranged along the direction perpendicular to the planes of the two push handles.