CN119117074A

CN119117074A - Strollers

Info

Publication number: CN119117074A
Application number: CN202411273109.2A
Authority: CN
Inventors: 李丰
Original assignee: Goodbaby Child Products Co Ltd
Current assignee: Goodbaby Child Products Co Ltd
Priority date: 2018-05-07
Filing date: 2018-05-07
Publication date: 2024-12-13
Also published as: CN108583670B; CN108583670A

Abstract

The invention discloses a child cart convenient to fold. The baby stroller comprises a frame, wherein the frame comprises a side support, the side support comprises a front rod, a rear support connecting rod and a backrest rod, the front rod is connected with the rear support connecting rod through a connecting piece, the connecting piece is connected with the rear end part of the front rod, the connecting piece is rotatably connected with the rear support connecting rod, the backrest rod is rotatably connected with the connecting piece, a slot is formed in the connecting piece, the slot is located between the connecting piece and the rear end of the rear support connecting rod and is formed by splicing the connecting piece and the rear support connecting rod, when the frame is in a unfolded state, the lower end part of the backrest rod is inserted into the slot, when the frame is in a folded state, the rear support connecting rod and the front rod rotate downwards relative to the connecting piece, the blocking effect of the rear support connecting rod and the front rod on the backrest rod is eliminated, and the backrest rod is turned towards the direction close to the front rod.

Description

Child cart

The application is a divisional application of the application with the application number 201810425761X submitted in 5/7/2018.

Technical Field

The invention relates to the field of children products, in particular to a child trolley.

Background

In the prior art, for convenience of transportation or storage, a child stroller is generally designed to be foldable. The foldable stroller generally includes a side frame having an extended position and a folded position, a front wheel assembly disposed at a bottom front portion of the side frame, a rear wheel assembly disposed at a bottom rear portion of the side frame, and a seat pocket disposed on the side frame. The existing side brackets of the children's barrow are various in types, the number of the rod pieces of the side brackets is different, the connection relation and the connection position among the rod pieces are different, and therefore the folding principle and the folding mode are different. The folding is avoided, the size is large and heavy, and the carrying is inconvenient, so that the folding of the frame is convenient, and the small size after the folding is the aim pursued by the child barrow designer.

Disclosure of Invention

The invention provides an improved child stroller which is convenient to fold.

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

The baby stroller comprises a frame with an unfolding state and a folding state, a front wheel assembly and a rear wheel assembly which are arranged at the bottom of the frame, wherein the frame comprises a side bracket, the side bracket comprises a front rod, a rear bracket connecting rod and a backrest rod, the front rod is connected with the rear bracket connecting rod through a connecting piece, the connecting piece is connected with the rear end part of the front rod, the connecting piece is rotatably connected with the rear bracket connecting rod, the backrest rod is rotatably connected with the connecting piece, a slot is formed in the connecting piece, the slot is arranged between the connecting piece and the rear end of the rear bracket connecting rod and is formed by splicing the connecting piece and the rear end part of the backrest rod, when the frame is in the unfolding state, the lower end part of the backrest rod is inserted into the slot, when the frame is in the folding state, the rear bracket connecting rod and the front rod rotate downwards relative to the connecting piece, the blocking effect of the backrest rod by the rear bracket connecting rod and the front rod is eliminated, and the backrest rod is turned towards the direction close to the front rod.

In a preferred embodiment, the frame comprises two or more side brackets and foldable cross brackets connected between the side brackets, wherein each side bracket comprises:

A pushing handle;

The upper end part of the front bracket connecting rod is rotatably connected with the push handle through a first pivot;

The lower end part of the front bracket is provided with the front wheel assembly;

the upper end part of the push handle connecting rod is rotatably connected with the lower end part of the push handle through a second pivot;

The lower end part of the rear bracket is provided with the rear wheel assembly;

a rear bracket link having a rear end rotatably connected to a lower end of the rear bracket through a third pivot, and

A front lever rotatably connected to the front bracket through a fourth pivot and a rear end portion rotatably connected to the rear bracket link through a fifth pivot;

The front support and the rear support are connected in a two-to-two relative rotation or coaxial rotation mode, the lower end part of the front support connecting rod, the upper end part of the front support and the upper end part of the rear support are connected in a two-to-one relative rotation or coaxial rotation mode, the push handle connecting rod is connected to the rear support in a rotatable mode through a sixth pivot, the lower end part of the push handle connecting rod is connected to the rear support connecting rod in a sliding mode, when the frame is in an unfolding mode, the lower end part of the push handle connecting rod is connected to a first position of the rear support connecting rod, when the frame is in a folding mode, the upper end part of the push handle is close to the upper end part of the front support and the upper end part of the rear support, the lower end part of the push handle connecting rod is close to the lower end part of the rear support connecting rod, and the lower end part of the push handle connecting rod is connected to a second position of the rear support connecting rod, and the second position is located in front of the first position.

In an embodiment, each side bracket further includes a first slider slidably disposed on the rear bracket link, and the lower end portion of the push handle link is rotatably connected to the first slider through a seventh pivot.

In an embodiment, the first sliding piece is a first sliding sleeve slidably sleeved on the rear bracket connecting rod.

In an embodiment, each side bracket further comprises a backrest rod, the front rod is connected to the rear bracket connecting rod through a connecting piece, the connecting piece is fixedly connected to the rear end portion of the front rod, the connecting piece is rotatably connected to the rear bracket connecting rod through a fifth pivot, the backrest rod is rotatably connected to the connecting piece through an eighth pivot, when the frame is in a unfolded state, a slot is formed in the connecting piece, the slot is located between the connecting piece and the end portion of the rear bracket connecting rod, the lower end portion of the backrest rod is inserted into the slot, and when the frame is in a folded state, the lower end portion of the backrest rod is separated from the slot, and the backrest rod and the front rod are close to each other.

In one embodiment, the backrest rod comprises an outer rod, an inner rod slidably connected to the lower portion of the outer rod, and a spring provided between the outer rod and the inner rod, the outer rod is rotatably connected to the connecting member through an eighth pivot, the spring is compressed and provides an urging force for the inner rod to be inserted into the slot during the relative expansion of the front rod and the rear bracket connecting rod, and the lower end portion of the inner rod is inserted into the slot when the frame is in the expanded state.

In an embodiment, each side bracket further comprises a rear rod positioned behind the front rod, and seats are respectively arranged on the front rod and the rear rod.

In one embodiment, the rear rod is slidably and rotatably connected to the push handle link, and a front end portion of the rear rod is rotatably connected to the rear bracket through a ninth pivot, and the rear rod, the push handle link and the rear bracket are close to each other when the frame is in the folded state.

In one embodiment, each side bracket further includes a second slider slidably disposed on the rear lever, and the push handle link is rotatably connected to the second slider through a tenth pivot.

In one embodiment, the cross support comprises one or more cross support assemblies, the cross support assemblies comprise two connecting rods which are connected in a pivoted mode to form a cross structure in a crossed mode, and the upper end portion and the lower end portion of each connecting rod are respectively connected with two parts of the side support in a rotatable mode.

In an embodiment, one cross support component is arranged between the front supports of the two side supports, and/or one cross support component is arranged between the rear supports of the two side supports, and/or one cross support component is arranged between the pushing handle connecting rods of the two side supports.

By combining the above technical scheme, the invention has the following advantages compared with the prior art:

according to the child cart provided by the invention, the structure of the side support enables the child cart to be stable in structure in an unfolding state, the size of the folded frame is smaller, and each rod piece of the side support can be mutually closed and folded by pushing the push handle, so that the child cart is convenient to fold.

Drawings

In order to more clearly illustrate the technical solutions of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a perspective view of a child stroller according to the present invention after deployment;

FIG. 2 is a side view of the stroller of FIG. 1 when folded;

FIG. 3 is a side view of the child stroller of FIG. 2 as further folded;

FIG. 4 is a side view of the child stroller of FIG. 1 after being folded;

FIG. 5 is a perspective view of a back rest bar according to the present invention after deployment;

FIG. 6 is an enlarged view of a portion of FIG. 5 at A;

FIG. 7 is a cross-sectional view of the backrest rod of FIG. 5;

FIG. 8 is a perspective view of the backrest bar of FIG. 5 when folded;

FIG. 9 is a partial enlarged view at B in FIG. 8;

Fig. 10 is a side view of the backrest bar of fig. 5 after being folded.

100 Parts of side brackets, 200 parts of transverse brackets, 300 parts of front wheel components, 400 parts of rear wheel components;

10. Push handle, 20, front bracket connecting rod, 30, front bracket, 40, push handle connecting rod, 50, rear bracket, 501, joint, 60, rear bracket connecting rod, 601, first sliding sleeve, 70, front rod, 701, connecting piece, 702, slot, 80, rear rod, 801, second sliding sleeve, 90, backrest rod, 901, outer rod, 9010, connecting pin, 902, inner rod, 9020, long hole, 903, spring;

21. the first cross support component, 210, a first connecting rod, 22, a second cross support component, 220, a second connecting rod, 23, a third cross support component, 230, a third connecting rod, 231, a fourth connecting rod, 24, a fourth cross support component, 240, a fifth connecting rod, 241 and a sixth connecting rod.

Detailed Description

Preferred embodiments of the present invention will be described in detail below with reference to the attached drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art. The term "orientation" as used herein is defined in the art as a conventional viewing angle of a stroller in an unfolded state and for convenience of description.

Figures 1-10 illustrate a stroller according to the present invention comprising a frame having an expanded state and a collapsed state, a front wheel assembly 300 and a rear wheel assembly 400 disposed at the bottom of the frame. The frame includes two or more side frames 100 and foldable cross frames 200 connected between the side frames 100, and in this embodiment, the number of the side frames 100 is two and are respectively located at the left and right sides of the stroller.

Referring to fig. 1 to 4, each side bracket 100 includes a push handle 10, a front bracket link 20, a front bracket 30, a push handle link 40, a rear bracket 50, a rear bracket link 60, and a front lever 70, respectively. The front wheel assembly 300 is disposed at a lower end portion of the front bracket 30, and the rear wheel assembly 400 is disposed at a lower end portion of the rear bracket 50. The upper end of the front bracket link 20 is rotatably connected to the push handle 10 through a first pivot a1, the upper end of the push handle link 40 is rotatably connected to the lower end of the push handle 10 through a second pivot a2, and the first pivot a1 is located above the second pivot a 2. The rear end portion of the rear bracket link 60 is rotatably connected to the lower end portion of the rear bracket 50 through a third pivot shaft a 3. The front lever 70 is rotatably coupled to the front bracket 30 through a fourth pivot a4, and the rear end portion of the front lever 70 is rotatably coupled to the front end portion of the rear bracket link 60 through a fifth pivot a 5. The lower end of the front bracket link 20, the upper end of the front bracket 30 and the upper end of the rear bracket 50 are connected in a two-to-two or coaxial rotation manner, namely, the lower end of the front bracket link 20, the upper end of the front bracket 30 and the upper end of the rear bracket 50 are connected in a rotation manner by one pivot, or a first part and a second part of the three parts are connected in a rotation manner by one pivot and a third part is connected in a rotation manner by the other pivot to the first part or the second part, in the embodiment, the upper end of the rear bracket 50 is provided with a joint 501, the joint 501 and the other parts of the rear bracket 50 are fixedly connected or integrally formed, the upper end of the front bracket 30 is connected in a rotation manner to the front part of the joint 501 by one pivot, the lower end of the front bracket link 20 is connected in a rotation manner to the rear part of the joint 501 by the other pivot, and the axes of the two pivots are parallel to each other and extend in the left-right direction of the stroller respectively. The push handle link 40 is rotatably connected to the rear bracket 50 through a sixth pivot a6, and the lower end portion of the push handle link 40 is slidably and rotatably connected to the rear bracket link 60, and in this embodiment, each side bracket 100 further includes a first sliding member slidably disposed on the rear bracket link 60, and the first sliding member is specifically a first sliding sleeve 601 slidably sleeved on the rear bracket link 60, and the lower end portion of the push handle link 40 is rotatably connected to the first sliding sleeve 601 through a seventh pivot a 7. The lower end of the push handle link 40 is connected to the rear bracket link 60 at a first location (i.e., where the first sliding sleeve 601 is located) when the frame is in the extended state, and the lower end of the push handle link 40 is connected to the rear bracket link 60 at a second location, which is located forward of the first location, when the frame is in the collapsed state. That is, as the push handle 10 is turned over during folding, the first sliding sleeve 601 slides forward along the rear bracket link 60 under the action of the push handle link 40, thereby driving the front bracket 30 and the rear bracket 50 to approach each other in cooperation with the front lever 70.

Each side bracket 100 also includes a back rest bar 90, respectively, which back rest bar 90 can be folded and unfolded with the other components of the side bracket 100. As shown in fig. 5 to 10, the front rod 70 is connected to the rear bracket link 60 through a connector 701, a first end of the connector 701 is fixedly connected to a rear end of the front rod 70, a second end of the connector 701 is rotatably connected to the rear bracket link 60 through a fifth pivot a5, the backrest rod 90 is rotatably connected to a third end of the connector 701 through an eighth pivot a8, and the first end, the second end and the third end of the connector 701 are arranged in a substantially triangle shape. When the frame is in an unfolded state, the connecting piece 701 is provided with the slot 702, the slot 702 is specifically positioned between the connecting piece 701 and the rear end of the rear bracket connecting rod 60 and is formed by splicing the connecting piece 701 and the rear end of the rear bracket connecting rod 60, the lower end part of the backrest rod 90 is inserted into the slot 702 to be unfolded stably, as shown in fig. 5 and 6, and when the frame is folded, as shown in fig. 8 and 9, the rear bracket connecting rod 60 and the front rod 70 rotate downwards relative to the connecting piece 701 along with the rotation of the rear bracket connecting rod 60, the blocking effect of the rear bracket connecting rod 60 and the front rod 70 on the backrest rod 90 disappears, and the backrest rod 90 turns downwards under the action of self gravity and the front rod 70 is mutually closed to achieve a folded state as shown in fig. 10. In this embodiment, a space is provided between the fifth pivot a5 and the rear end of the rear bracket link 60, and the rear end of the rear bracket link 60 is rotated upward to the outside of the connector 701 when the frame is folded.

Referring to fig. 7, the backrest bar 90 includes an outer bar 901, an inner bar 902 slidably inserted into a lower portion of the outer bar 901, and a spring provided between the outer bar 901 and the inner bar 902, the outer bar 901 being rotatably connected to the connection member 701 through the eighth pivot shaft a 8. Specifically, the lower portion of the outer rod 901 is provided with a mounting groove into which the inner rod 902 is inserted, the inner rod 902 is slidably inserted in the mounting groove, and the spring is a compression spring 903 which is provided to be abutted between the bottom of the mounting groove and the upper end portion of the inner rod 902. During the relative deployment of the front and rear bracket links 70 and 60, the lower end of the inner rod 902 is pushed by the rear end of the rear bracket link 60 to slide into the outer rod 901 while the connector 701 is gradually spliced with the rear end of the rear bracket link 60, the compression spring 903 is compressed to provide the inner rod 902 with the pushing force of the insertion slot 702, and the lower end of the inner rod 902 is inserted into the insertion slot 702 under the pushing force of the compression spring 903 when the frame is in the deployed state. In particular, in the present embodiment, the inner rod 902 is provided with a long hole 9020, and the outer rod 901 is provided with a connecting pin 9010, and the connecting pin 9010 is slidably inserted into the long hole 9020 along the extending direction of the long hole 9020, thereby allowing the inner rod 902 to slide relative to the outer rod 901 and preventing the inner rod 902 from being completely separated from the outer rod 901.

Referring to fig. 1 and 2, each side bracket 100 further includes a rear bar 80 positioned at the rear of the front bar 70, seats are provided on the front bar 70 and the rear bar 80, respectively, and the two seats are disposed at a front-rear interval, and the stroller is used as a double stroller. The front bar 70 serves as a seat bar for the front seat and the rear bar 80 serves as a seat bar for the rear seat. In addition, the stroller may be used as a single stroller with only one seat provided on the front rail 70.

The rear lever 80 is specifically disposed between the rear bracket 50 and the push handle link 40. Wherein the rear lever 80 is slidably and rotatably connected to the push handle link 40, and the front end portion of the rear lever 80 is rotatably connected to the rear bracket 50 through a ninth pivot a9, and the rear lever 80, the push handle link 40 and the rear bracket 50 are drawn close to each other when the frame is in the folded state. Specifically, each side bracket 100 further includes a second sliding member slidably disposed on the rear rod 80, and the second sliding member is specifically a second sliding sleeve 801 slidably sleeved on the rear rod 80, the push handle connecting rod 40 is rotatably connected to the second sliding sleeve 801 through a tenth pivot a10, the second sliding sleeve 801 is disposed behind a ninth pivot a9, and when the frame is folded, the rear rod 80 can be folded together therewith.

The axes of the first pivot a1, the second pivot a2, the third pivot a3, the fourth pivot a4, the fifth pivot a5, the sixth pivot a6, the seventh pivot a7, the eighth pivot a8, the ninth pivot a9, and the tenth pivot a10 in each side bracket 100 are parallel to each other, and preferably extend horizontally in the left-right direction of the stroller. The axes of the corresponding pivots of the two side brackets 100 coincide with each other, such as the axes of the first pivots a1 of the two side brackets 100 coincide with each other, the axes of the two second pivots a2 of the two side brackets 100 coincide with each other, and so on.

Referring to fig. 1, the cross frame 200 is formed of one or more cross brace assemblies and is laterally foldable to allow the side frames 100 on both sides to be folded toward the middle, reducing the lateral dimension of the stroller after folding. Specifically, in this embodiment, a first cross brace assembly 21 is disposed between the front frames 30 of the two side frames 100 to bring the front frames 30 of the two sides together, a second cross brace assembly 22 is disposed between the rear frames 50 of the two side frames 100 to bring the rear frames 50 of the two sides together, a third cross brace assembly 23 is disposed between the push handle links 40 of the two side frames 100 to bring the push handle links 40 of the two sides together, and a fourth cross brace assembly 24 is disposed between the backrest links 90 of the two side frames 100 to bring the backrest links 90 of the two sides together. Each cross brace assembly includes at least two links pivotally connected to each other to form a cross structure, with upper and lower ends of the links being pivotally connected to two parts of the side bracket 100, respectively.

The first cross brace assembly 21 includes two first links 210, and the middle portions of the two first links 210 are pivotally connected to intersect to form a cross structure. The upper ends of the two first links 210 are rotatably connected to the rear ends of the front bars 70 of the two side brackets 100, respectively, and the lower ends of the two first links 210 are rotatably connected to the lower ends of the two front brackets 30, respectively.

The second cross brace assembly 22 includes two second links 220, and the middle portions of the two second links 220 are pivotally connected to intersect to form a cross structure. The upper ends of the two second links 220 are rotatably connected to the first sliding sleeves 601 of the two side brackets 100, respectively, and the lower ends of the two second links 220 are rotatably connected to the lower ends of the two rear brackets 50, respectively.

The third cross brace assembly 23 includes two third links 230 and two fourth links 231, the middle portions of the two third links 230 are pivotally connected to intersect to form a cross structure, and the upper end portion of each third link 230 is pivotally connected to the inner end portion of one fourth link 231. The outer ends of the two fourth links 231 are rotatably connected to the second sliding sleeves 801 of the two side brackets 100, respectively, and the lower ends of the two third links 230 are rotatably connected to the lower ends of the two handle links 40, respectively.

The forty-shaped stay assembly 24 includes two fifth links 240 and two sixth links 241, the middle portions of the two fifth links 240 are pivotally connected to intersect to form a cross structure, and the upper end portion of each fifth link 240 is pivotally connected to the inner end portion of one sixth link 241. The outer ends of the two sixth links 241 are rotatably connected to the upper ends of the backrest bars 90 of the two side brackets 100, respectively, and the lower ends of the two fifth links 240 are rotatably connected to the lower ends of the two backrest bars 90, respectively.

Referring to fig. 1, when the vehicle frame is in the unfolded state, the first cross brace assembly 21, the second cross brace assembly 22, the third cross brace assembly 23 and the fourth cross brace assembly 24 of the cross bracket 200 are respectively unfolded, the two side brackets 100 are spaced left and right, the push handle 10, the front bracket 30 and the rear bracket 50 are relatively unfolded, and the lower end portion of the inner rod 902 of the backrest rod 90 is inserted into the insertion slot 702.

As shown in fig. 2 and 3, when the frame is folded, the push handle 10 is pressed downward such that the lower end of the push handle 10 is turned backward and downward, the push handle link 40 is turned over to drive the first sliding sleeve 601 to slide forward along the rear bracket link 60 such that the push handle 10 is drawn toward the rear bracket 50 while the rear end of the rear lever 80 is drawn toward the rear bracket 50, the front bracket 30 is drawn toward the rear bracket 50 by the rear bracket link 60 and the front lever 70, the lower end of the inner lever 902 of the backrest lever 90 is gradually drawn toward the front bracket 30, and as the side bracket 100 is folded, the first cross brace assembly 21, the second cross brace assembly 22, the thirty-first cross brace assembly 23 and the forty-second cross brace assembly 24 are folded such that the side brackets 100 on both sides are folded toward the middle. Until the frame is folded to the state shown in fig. 4, the cross frame 200 is folded to the folded state, so that the side frames 100 on both sides are closed, the upper end portion of the push handle 10, the lower end portion of the push handle link 40 and the upper end portion (joint 501) of the rear frame 50 of each side frame 100, the front end portion of the rear frame link 60 and the rear end portion of the front rod 70 are closed, the joint 501 is substantially horizontal, the lower end portion of the push handle 10, the upper end portion of the push handle link 40 and the lower end portion of the rear frame 50, the lower end portion of the front frame 30 and the upper end portion of the back frame 90 are closed, and the front wheel assemblies 300 on both sides are closed between the rear wheel assemblies 400 on both sides.

The above examples are only for illustrating the technical concept and features of the present invention, and are intended to be preferred embodiments, and those skilled in the art can understand the content of the present invention and implement the same, and thus are not intended to limit the scope of the present invention. All equivalent changes or modifications of the invention are intended to be included within the scope of the present invention.

Claims

1. The baby stroller comprises a frame with an unfolding state and a folding state, a front wheel assembly and a rear wheel assembly which are arranged at the bottom of the frame, wherein the frame comprises a side bracket, the side bracket comprises a front rod, a rear bracket connecting rod and a backrest rod, the front rod is connected with the rear bracket connecting rod through a connecting piece, the connecting piece is connected with the rear end part of the front rod, the connecting piece is rotatably connected with the rear bracket connecting rod, the backrest rod is rotatably connected with the connecting piece, a slot is formed in the connecting piece, the slot is arranged between the connecting piece and the rear end of the rear bracket connecting rod and is formed by splicing the connecting piece and the rear end part of the backrest rod, when the frame is in the unfolding state, the lower end part of the backrest rod is inserted into the slot, when the frame is in the folding state, the rear bracket connecting rod and the front rod rotate downwards relative to the connecting piece, the blocking effect of the backrest rod by the rear bracket connecting rod and the front rod is eliminated, and the backrest rod is turned towards the direction close to the front rod.

2. The stroller of claim 1, wherein the connector is rotatably coupled to the rear bracket link by a fifth pivot and the backrest bar is rotatably coupled to the connector by an eighth pivot.

3. The stroller of claim 2, wherein the backrest bar comprises an outer bar, an inner bar slidably coupled to a lower portion of the outer bar, and a spring provided between the outer bar and the inner bar, the outer bar being rotatably coupled to the coupling member through the eighth pivot, the spring being compressed and providing an urging force for the inner bar to be inserted into the slot during a relative expansion of the front bar and the rear bracket link, and a lower end portion of the inner bar being inserted into the slot when the frame is in the expanded state.

4. The stroller of claim 1, wherein the frame further comprises a collapsible cross-brace connected between two or more of the side brackets, each side bracket further comprising:

A pushing handle;

the front support comprises a front support connecting rod, a rear support connecting rod, a front rod, a push handle connecting rod, a rear support connecting rod, a push handle connecting rod, a frame, a rear support connecting rod, a frame and a frame, wherein the lower end of the front support connecting rod, the upper end of the front support and the upper end of the rear support are connected in a two-to-two opposite rotating manner, the rear end of the rear support connecting rod is connected to the lower end of the rear support through a third pivot, the front rod is connected to the front support connecting rod through a fourth pivot, the rear end of the front support connecting rod is connected to the rear support connecting rod through a fourth pivot, the push handle connecting rod is connected to the rear support through a sixth pivot, the lower end of the push handle connecting rod is connected to the rear support connecting rod in a slidable manner, the lower end of the push handle connecting rod is connected to a first position of the rear support connecting rod when the frame is in an unfolded state, the upper end of the push handle is close to the upper end of the front support connecting rod when the frame is in a folded state, the lower end of the push handle connecting rod is close to the rear support connecting rod, and the lower end of the front support is connected to the rear support connecting rod in a second position when the frame is located at the second position.

5. The stroller of claim 4, wherein each side bracket further comprises a first slider slidably disposed on the rear bracket link, and wherein the lower end of the push handle link is rotatably coupled to the first slider by a seventh pivot.

6. The stroller of claim 5, wherein the first slider is a first sliding sleeve slidably disposed over the rear bracket link.

7. The stroller of claim 4, wherein each side bracket further comprises a rear bar positioned rearward of the front bar, and wherein each of the front bar and the rear bar is provided with a seat.

8. The stroller of claim 7, wherein the rear bar is slidably and rotatably coupled to the handlebar link and a front end of the rear bar is rotatably coupled to the rear bracket via a ninth pivot, the rear bar and the handlebar link and the rear bracket being moved toward each other when the frame is in the collapsed condition.

9. The stroller of claim 8, wherein each side bracket further comprises a second slide slidably disposed on the rear bar, and wherein the push handle link is rotatably coupled to the second slide by a tenth pivot.

10. The stroller of claim 4, wherein the cross support comprises one or more cross support members, the cross support members comprise two connecting rods which are connected in a pivoted manner to form a cross structure, the upper end and the lower end of each connecting rod are respectively and rotatably connected to two parts of the side supports, one cross support member is arranged between the front supports of the two side supports, and/or one cross support member is arranged between the rear supports of the two side supports, and/or one cross support member is arranged between the handle connecting rods of the two side supports.