CN216185406U

CN216185406U - Children's barrow

Info

Publication number: CN216185406U
Application number: CN202122387061.6U
Authority: CN
Inventors: 李照国; 尤志刚; 谈太平
Original assignee: Goodbaby Child Products Co Ltd
Current assignee: Goodbaby Child Products Co Ltd
Priority date: 2021-09-29
Filing date: 2021-09-29
Publication date: 2022-04-05
Anticipated expiration: 2031-09-29

Abstract

The utility model discloses a stroller, which comprises a frame in an unfolded state and a folded state, a front wheel assembly and a rear wheel assembly which are arranged at the bottom of the frame, and a locking mechanism for locking the frame in the unfolded state, wherein the frame comprises two groups of side brackets which are respectively arranged at the left side and the right side, and a cross support assembly which is connected between the two groups of side brackets, and the side brackets at each side comprise a front supporting rod, a rear supporting rod, a push rod, a handrail rod, a connecting rod and a rear supporting rod in the unfolded state. The cross brace component comprises a cross brace which can be telescopically arranged along the left and right directions and a cross brace component which can be opened or folded along the left and right directions. In the stroller of the utility model, the folding of the side supports in the up-down direction and the folding of the cross supports in the left-right direction are mutually linked, so that the stroller can be conveniently folded; and the volume of the folded stroller is small, thereby being convenient for storage and transportation.

Description

Children's barrow

Technical Field

The utility model relates to a baby stroller.

Background

Some existing stroller devices are often configured to be collapsible in order to reduce their size for storage and transport. However, most of the stroller needs complicated operations performed by the user when folded, and still has a large volume after being folded, which is very inconvenient to use. Therefore, the design and manufacture of a stroller which can be folded easily and has a small volume after being folded have led to the efforts of those skilled in the art.

Disclosure of Invention

The utility model aims to provide a novel child stroller.

In order to achieve the purpose, the utility model adopts the technical scheme that: a children's barrow, including the frame with expansion state and fold condition, locate front wheel module and rear wheel module of the bottom of the said frame, and is used for locking the said frame in the locking mechanism under the expansion state, the said frame includes locating two groups of side supports of left and right sides separately, and connect the cross brace assembly between two groups of said side supports, under the expansion state, the said side support of each side includes front strut, back strut, push rod, bar, tie rod and back strut, wherein, the said front strut extends from forward and backward and upwards slope, the said front wheel module locates the bottom of the said front strut; the rear supporting rod extends from back to front and upwards in an inclined mode, and the rear wheel assembly is arranged at the bottom of the rear supporting rod; the grab rail extends along the front-back direction, and the rear part of the grab rail is rotationally connected to the push rod; the connecting rod extends along the front-back direction, and the front part of the connecting rod is rotationally connected to the front supporting rod; the rear support rod extends along the vertical direction, and the lower part of the rear support rod is rotationally connected to the rear support rod; the upper part of the front supporting rod, the upper part of the rear supporting rod and the front part of the handrail rod are connected together in a rotating way around a first rotating center line, the lower part of the push rod, the rear part of the connecting rod and the upper part of the rear supporting rod are connected together in a rotating way around a second rotating center line, the first rotating center line and the second rotating center line are parallel to each other,

the cross brace assembly comprises two diagonal braces which are crossed with each other and rotatably connected at the crossed position, the diagonal braces obliquely extend along the front and back direction, the front parts of the diagonal braces are rotatably connected with the upper parts of the back support rods on one side, and the rear parts of the diagonal braces are rotatably connected with the back support rods on the other side.

Preferably, the rear support rod includes a rear upper support rod and a rear lower support rod which are telescopically connected to each other in a vertically sliding manner, the rear wheel assembly is disposed at the bottom of the rear lower support rod, the upper portion of the rear upper support rod is rotatably connected to the upper portion of the front support rod and the front portion of the grab bar together around the first rotation center line, the lower portion of the rear support rod is rotatably connected to the rear lower support rod, the side bracket at each side further includes a side link rod extending in the front-rear direction, the rear portion of the side link rod is rotatably connected to the rear support rod, and the front portion of the side link rod is rotatably connected to the upper portion of the rear upper support rod.

Furthermore, a front connecting piece is rotatably connected to the front part of the inclined strut, a rear connecting piece is rotatably connected to the rear part of the inclined strut, and the front connecting piece is located below the first rotating center line in the length extending direction of the rear upper supporting rod and is not lower than the rotating connection position of the side connecting rod and the rear upper supporting rod; the rear connecting piece is located below the second rotation center line in the length extending direction of the rear support rod and is not lower than the rotation connecting position of the side connecting rod and the rear support rod.

Furthermore, the front connecting piece and the front part of the side connecting rod are rotatably connected to the upper part of the rear upper supporting rod around the same rotating center line; and/or the rear connecting piece is positioned above the side connecting rod on the rear support rod.

Further, when the frame is in a folded state, the rear upper support rod and the rear lower support rod slide relatively to each other and are shortened and close to each other along the front-rear direction with the front support rod, the two groups of front wheel assemblies are located between the two groups of rear wheel assemblies along the left-right direction, and the front wheel assemblies and the rear wheel assemblies can be supported on the same plane together.

Preferably, the two diagonal support rods are rotatably connected at the intersection around a first axis, the front part of each diagonal support rod is rotatably connected with a front connecting piece through a second axis, the rear part of each diagonal support rod is rotatably connected with a rear connecting piece through a third axis, the front connecting piece is rotatably connected to the upper part of the rear support rod around a fourth axis, and the rear connecting piece is rotatably connected to the rear support rod around a fifth axis, wherein the axes of the first axis, the second axis and the third axis are parallel to each other, and the axes of the fourth axis and the fifth axis are parallel to each other.

Further preferably, the front connecting piece is positioned below the first rotation center line along the length extension direction of the rear supporting rod; and/or the rear connecting piece is positioned below the second rotation center line along the length extension direction of the rear supporting rod.

Preferably, the grab rail, the front support rod and the rear support rod are sequentially arranged from outside to inside along the left and right direction of the frame, and the cross brace is arranged between the upper parts of the rear support rods on the two sides;

and/or, follow in the left and right direction of frame, the bar, the push rod the connecting rod reaches back vaulting pole is from outer to interior setting gradually, the cross props the subassembly and is located both sides along the left and right direction back vaulting pole and both sides between the back branch.

Preferably, when the frame is in the unfolded state, the first rotation center line is lower than the second rotation center line; when the frame is in a folded state, the second rotating center line is lower than the first rotating center line.

As a preferred embodiment, the cross brace assembly further comprises a front cross bar which is arranged between the lower parts of the two groups of front cross bars and can stretch and retract along the left-right direction, and a pedal member is arranged on the front cross bar;

and/or the cross brace assembly further comprises a rear cross bar which is arranged between the lower parts of the two groups of rear cross bars and can stretch out and draw back along the left-right direction;

and/or, each side the side support still includes pushing away the handle, the lower part of pushing away the handle with the upper portion of push rod is connected with rotating, works as under the frame is in folded condition, push away the handle and draw in the rear side of push rod and with the push rod draws in jointly the rear of back branch, the stull subassembly still including setting up two sets of push away between the upper portion of handle and can follow the flexible upper crossbar of left and right sides direction.

Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages: in the stroller of the utility model, the folding of the side supports in the up-down direction and the folding of the cross supports in the left-right direction are mutually linked, so that the stroller can be conveniently folded; and the volume of the folded stroller is small, thereby being convenient for storage and transportation.

Drawings

FIG. 1 is a first three-dimensional schematic view of the stroller of the present invention with the frame in an unfolded state;

FIG. 2 is a schematic three-dimensional view of a stroller of the present invention shown in an expanded state;

FIG. 3 is a side view of the stroller of the present invention with the frame in a deployed position;

FIG. 4 is a schematic top view of the stroller of the present invention with the frame in an extended position;

FIG. 5 is a side view of the stroller of the present invention during transition from the deployed position to the collapsed position;

FIG. 6 is a side view of the stroller of the present invention with the frame in a folded position;

FIG. 7 is a rear view of the stroller of the present invention with the frame in a folded position;

wherein:

100. a frame; 200. a front wheel assembly; 300. a rear wheel assembly;

1. a front support rod;

2. a rear support rod; 21. a rear upper support rod; 22. a rear lower support rod;

31. a push rod; 32. a push handle;

4. a grab rail; 5. a connecting rod; 6. a rear stay bar; 7. a transverse stay bar; 71. a first lever; 72. a second lever;

8. a cross brace assembly; 81. a diagonal brace; 82. a front connector; 83. a rear connector;

9. a side link; 10. a front cross bar; 10-1, a foot pedal; 10-2, a third rod; 10-3, a fourth rod;

11. a rear cross bar; 11-1, a fifth rod; 11-2, a sixth rod;

12. an upper cross bar; 12-1, a seventh rod; 12-2, an eighth rod;

a. a first rotational centerline; b. a second center of rotation; c. a third center of rotation;

d. a first shaft; e. a second shaft; f. a third axis; g. a fourth axis; h. and a fifth shaft.

Detailed Description

The technical solution of the present invention is further explained with reference to the drawings and the specific embodiments.

A stroller, as shown in fig. 1 to 7, comprises a frame 100 having an unfolded state and a folded state, a front wheel assembly 200 and a rear wheel assembly 300 disposed at the bottom of the frame 100, and a locking mechanism (not shown) for locking the frame 100 in the unfolded state.

The frame 100 includes two sets of side brackets respectively disposed at the left and right sides, and a cross brace assembly connected between the two sets of side brackets.

The side support of each side all includes front branch 1, rear branch 2, push rod 31, handrail pole 4, connecting rod 5 and back vaulting pole 6.

When the frame 100 is in the unfolded state, as shown in fig. 1 to 4, the front strut 1 extends obliquely upward from front to back, the rear strut 2 extends obliquely upward from back to front, and the rear strut 2 includes a rear upper strut 21 and a rear lower strut 22 which are telescopically connected to each other so as to be slidable in the up-down direction. Specifically, the rear upper strut 21 is located on the upper side of the rear lower strut 22, and the rear upper strut 21 is telescopically slidably disposed in the rod cavity of the rear lower strut 22 in the length direction, and in the unfolded state of the vehicle frame 100, the rear upper strut 21 extends above the rear lower strut 22, and the length of the rear strut 2 is extended.

The grab bar 4 extends in the front-rear direction when the frame 100 is in the unfolded state, and the grab bar 4, the front stay 1 and the rear stay 2 are sequentially arranged from the outside to the inside in the left-right direction of the frame 100, the upper portion of the rear upper stay 21 is rotatably connected to the upper portion of the front stay 1 and the front portion of the grab bar 4 together around the first rotation center a line, and the rear portion of the grab bar 4 is rotatably connected to the push rod 31.

In this embodiment, in the unfolded state of the vehicle frame 100, the push rod 31 extends obliquely upward from front to rear, the connecting rod 5 extends in the front-rear direction, the rear stay 6 extends in the up-down direction, the front portion of the connecting rod 5 is rotatably connected to the front stay 1, and the lower portion of the rear stay 6 is rotatably connected to the rear lower stay 22. The lower part of the push rod 31, the rear part of the connecting rod 5, and the upper part of the rear stay 6 are connected together rotationally about the second rotational center b line.

The side bracket of each side further includes a push handle 32, and a lower portion of the push handle 32 is rotatably connected to an upper portion of the push rod 31 about a third rotation center line c.

The first rotation center line a, the second rotation center line b and the third rotation center line c all extend along the left-right direction, and the extension directions of the first rotation center line a, the second rotation center line b and the third rotation center line c are parallel to each other. When the frame 100 is in the unfolded state, the first rotation center line a is lower than the second rotation center line b.

The cross brace component comprises a cross brace 7 which can be telescopically arranged along the left and right directions and a cross brace component 8 which can be opened or folded along the left and right directions.

The transverse supporting rod 7 is arranged on the upper parts of the front supporting rods 1 on the two sides or on the upper parts of the rear supporting rods 2 on the two sides or on the front parts of the handrail rods 4 on the two sides, and the axial lead of the transverse supporting rod 7 and the line of the first rotation center a are parallel or extend in a collinear way. In this embodiment, the transverse strut 7 is disposed between the upper portions of the rear upper struts 21 on both sides, the axis of the transverse strut 7 extends in a same line with the first rotation center line a, and the transverse strut 7 includes a first rod 71 and a second rod 72 slidably and telescopically disposed in the length direction of the first rod 71, wherein the second rod 72 is slidably and telescopically disposed in the rod cavity of the first rod 71 in the length direction of the first rod 71. In the process of relatively moving the two sets of side brackets away in the left-right direction, the second rod 72 is extended out of the first rod 71 in a sliding manner in the longitudinal direction of the first rod 71, and the length of the transverse supporting rod 7 is extended. During the relative closing of the two sets of side brackets in the left-right direction, the second rod 72 is slidingly contracted into the rod cavity of the first rod 71 in the length direction of the first rod 71, and the length of the transverse supporting rod 7 is shortened.

Along the left and right direction of the frame 100, the grab bar 4, the push rod 31, the connecting rod 5 and the rear support rod 6 are arranged in sequence from outside to inside, and the cross support assembly 8 is positioned between the rear support rods 6 on both sides and the rear support rods 2 on both sides along the left and right direction. Specifically, the cross brace assembly 8 includes two diagonal braces 81 that intersect each other and are rotatably connected at the intersection, the diagonal braces 81 extend obliquely in the front-rear direction, the front portions of the diagonal braces 81 are rotatably connected to the upper portions of the rear stays 2 on one side, and the rear portions of the diagonal braces 81 are rotatably connected to the rear stays 6 on the other side.

In the present embodiment, the front portion of each diagonal strut 81 is rotatably connected to the front connecting member 82 through the second axis e, and the rear portion of each diagonal strut 81 is rotatably connected to the rear connecting member 83 through the third axis f. Two diagonal braces 81 are pivotally connected at the intersection about a first axis d, a front linkage 82 is pivotally connected to the upper portion of the rear upper strut 21 about a fourth axis g, and a rear linkage 83 is pivotally connected to the rear strut 6 about a fifth axis h. In this embodiment, the first axis d, the second axis e, and the third axis f all extend in the vertical direction, and the axes of the three axes are parallel to each other, and the fourth axis g and the fifth axis h all extend in the horizontal direction, and the axes of the two axes are parallel to each other.

The front link 82 is located below the first rotation center a in the direction along which the rear stay 2 extends in length; and/or the rear connecting member 83 is located below the second rotation center b line in the direction along the length extension of the rear stay 6. In this embodiment, the front link 82 is located below the first rotation center a in the longitudinal direction of the rear stay 2, and the rear link 83 is located below the second rotation center b in the longitudinal direction of the rear stay 6.

The side bracket of each side further includes a side link 9 extending in the front-rear direction, a rear portion of the side link 9 is rotatably connected to the rear stay 6, and a front portion of the side link 9 is rotatably connected to an upper portion of the rear upper strut 21. The front connecting piece 82 is connected to the upper part of the rear upper strut 21 around the same rotation center line with the front part of the side connecting rod 9; and/or, the rear connector 83 is located above the side link 9 on the rear stay 6. In this embodiment, the front link 82 is located below the first rotation center a line in the length extending direction of the rear upper strut 21, and is not lower than the rotational connection position of the side link 9 and the rear upper strut 21. The rear link 83 is located below the second rotation center b in the length extending direction of the rear stay 6 and is not lower than the rotational connection position of the side link 9 and the rear stay 6. The front link 82 is connected to the upper portion of the rear upper stay 21 so as to rotate about the fourth axis g together with the front end portion of the side link 9, and the rear link 83 is located above the side link 9 on the rear stay 6. The rear end of the side link 9 is rotatably connected to the rear stay 6.

The arrangement of the rear support rod 6, the side connecting rods 9 and the cross support assembly 8 enables the folding of the stroller in the up-down direction and the left-right direction to be linked with each other. The linkage principle is specifically explained as follows:

in the process of folding the side supports on either side in the left-right direction up and down, the push rod 31 moves backwards and downwards to drive the rear support rod 6 to rotate clockwise and downwards around the rotary connection part of the rear support rod 6 and the rear lower support rod 22, the two groups of inclined support rods 81 are rotated and folded around the first shaft d by the downward rotation of the rear support rod 6, the two groups of inclined support rods 81 are gradually and relatively folded in the left-right direction, the length of the transverse support rod 7 is driven to be shortened, and the two groups of side supports are gradually and relatively folded in the left-right direction.

The cross brace assembly also comprises a front cross bar 10 which is arranged between the lower parts of the two groups of front support bars 1 and can stretch out and draw back along the left-right direction, and a pedal piece 10-1 is arranged on the front cross bar 10; and/or the cross brace assembly also comprises a rear cross bar 11 which is arranged between the lower parts of the two groups of rear supporting rods 2 and can stretch out and draw back along the left and right directions; and/or, the cross brace assembly also comprises an upper cross bar 12 which is arranged between the upper parts of the two groups of push handles 32 and can be stretched and contracted along the left-right direction. In this embodiment, the wale assembly includes a front cross bar 10 which is disposed between the lower portions of the two sets of front support bars 1 and can extend and retract in the left-right direction, a rear cross bar 11 which is disposed between the lower portions of the two sets of rear support bars 2 and can extend and retract in the left-right direction, and an upper cross bar 12 which is disposed between the upper portions of the two sets of push handles 32 and can extend and retract in the left-right direction. Specifically, the front cross bar 10 comprises a third bar 10-2 and a fourth bar 10-3 slidably and telescopically arranged in a bar cavity of the third bar 10-2, the rear cross bar 11 comprises a fifth bar 11-1 and a sixth bar 11-2 slidably and telescopically arranged in a bar cavity of the fifth bar 11-1, and the upper cross bar 12 comprises a seventh bar 12-1 and an eighth bar 12-2 slidably and telescopically arranged in a bar cavity of the seventh bar 12-1.

The front wheel assemblies 200 are respectively arranged at the front parts of the left and right side support frames, in this embodiment, the two front wheel assemblies 200 are universal wheel assemblies, and the two front wheel assemblies 200 are respectively arranged at the bottoms of the front support rods 1 in a universal rotating manner. The rear wheel assembly 300 has two sets disposed at the rear of the left and right side support bases, and in this embodiment, the two sets of rear wheel assemblies 300 are disposed at the bottom of the rear lower support rod 22. The interval between the two sets of front wheel assemblies 200 in the left-right direction is greater than the interval between the two sets of rear wheel assemblies 300 in the left-right direction.

When the frame 100 is in the deployed state, as shown in fig. 1 to 4, the first rotation center line a is lower than the second rotation center line b, the front stay 1 extends obliquely upward from front to rear, the rear stay 2 extends obliquely upward from rear to front, and the rear upper stay 21 protrudes above the rear lower stay 22 on each of the left and right sides of the frame 100, and the rear stay 2 is relatively elongated. The push rod 31 and the push handle 32 extend obliquely upward from front to rear in substantially the same longitudinal direction. The second rod 72 extends out of the rod cavity of the first rod 71, the length of the transverse strut 7 is extended, the two groups of diagonal struts 81 are relatively opened, and the two groups of side brackets are relatively opened in the left-right direction.

When it is desired to fold the vehicle body frame 100, as shown in fig. 5, the locking of the vehicle body frame 100 by the locking mechanism (not shown) is released, the upper cross bar 12 is pressed down, the push handle 32 is rotated clockwise and downward around the third rotation center line c on each of the left and right sides of the vehicle body frame 100, and the push handle 32 is gradually drawn in relative to the push rod 31 in the front-rear direction. The user continues to push down the upper cross bar 12, the push rod 31 rotates counterclockwise forward around the second rotation center line b, the push rod 31 and the grab bar 4 gradually move closer together, and the size of the stroller in the up-down direction gradually decreases.

At the same time, under the effect of the user's downward pressure, the push rod 31 moves downward and rearward, causing the rear stay 6 to rotate clockwise and downward about its rotational connection with the rear lower stay 22. Through the transmission of the side connecting rods 9, the downward rotation of the rear supporting rod 6 drives the two groups of inclined supporting rods 81 to rotate and fold around the first shaft d, the two groups of inclined supporting rods 81 gradually and relatively fold in the left-right direction, the lengths of the transverse supporting rod 7, the lower cross rod 10 and the upper cross rod 12 are further driven to shorten, and the two groups of side brackets gradually and relatively close in the left-right direction. Accordingly, the two sets of front wheel assemblies 200 are gradually and relatively folded in the left-right direction, and the two sets of rear wheel assemblies 300 are gradually and relatively folded in the left-right direction. The stroller is gradually reduced in size in the left-right direction.

The push rod 31 moves downward and rearward so that the second rotation center line b gradually moves to below the first rotation center line a; and, through the transmission of the connecting rod 5, the push rod 31 drives the front support rod 1 to rotate backward counterclockwise around the first rotation center line a, the front support rod 1 and the rear support rod 2 gradually get closer relatively in the front-rear direction, accordingly, the front wheel assembly 200 and the rear wheel assembly 300 gradually get closer relatively in the front-rear direction, and the size of the stroller in the front-rear direction gradually decreases.

When the frame 100 is in the folded state, as shown in fig. 6 and 7, the second rotation center line b is lower than the first rotation center line a, on each of the left and right sides of the frame 100, the rear upper strut 21 and the rear lower strut 22 slide relatively and contract with each other along the front-rear direction with the front strut 1, and the push handle 32 is folded at the rear side of the push rod 31 and folded at the rear of the rear strut 2 together with the push rod 31. The second rod 72 is slidably retracted in the rod cavity of the first rod 71 in the longitudinal direction of the first rod 71, the length of the transverse strut 7 is shortened, the two sets of diagonal struts 81 are relatively gathered together in the left-right direction, and the left and right sets of side brackets are relatively gathered together in the left-right direction. The two sets of front wheel assemblies 200 are positioned between the two sets of rear wheel assemblies 300 in the left-right direction, and the front wheel assemblies 200 and the rear wheel assemblies 300 can be supported on the same plane together.

In summary, the stroller of the present invention uses the rear support rod 6, the side connecting rod 9 and the cross support assembly 8 to fold the side support in the up-down direction and the cross support assembly in the left-right direction in a linkage manner, so as to simplify the operations that need to be performed by the user when the stroller is folded. Meanwhile, the size of the folded stroller is obviously reduced in the vertical direction, the horizontal direction and the front-back direction compared with the size of the stroller before folding, and the stroller is convenient to store and transport.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a children's shallow, includes the frame that has expansion state and fold condition, locates the front wheel subassembly and the rear wheel subassembly of frame bottom, and be used for with the locking mechanical system of frame locking under the expansion state, the frame is including dividing two sets of collateral branch framves of locating the left and right sides, and connect two sets of stull subassembly between the collateral branch frame, its characterized in that: in the unfolded state, the side supports on each side respectively comprise a front support rod, a rear support rod, a push rod, a grab bar, a connecting rod and a rear support rod, wherein the front support rod obliquely extends upwards from front to back, and the front wheel assembly is arranged at the bottom of the front support rod; the rear supporting rod extends from back to front and upwards in an inclined mode, and the rear wheel assembly is arranged at the bottom of the rear supporting rod; the grab rail extends along the front-back direction, and the rear part of the grab rail is rotationally connected to the push rod; the connecting rod extends along the front-back direction, and the front part of the connecting rod is rotationally connected to the front supporting rod; the rear support rod extends along the vertical direction, and the lower part of the rear support rod is rotationally connected to the rear support rod; the upper part of the front supporting rod, the upper part of the rear supporting rod and the front part of the handrail rod are connected together in a rotating way around a first rotating center line, the lower part of the push rod, the rear part of the connecting rod and the upper part of the rear supporting rod are connected together in a rotating way around a second rotating center line, the first rotating center line and the second rotating center line are parallel to each other,

2. The stroller of claim 1, wherein: the rear support rod comprises a rear upper support rod and a rear lower support rod which can be in telescopic connection in a vertical sliding mode, the rear wheel assembly is arranged at the bottom of the rear lower support rod, the upper portion of the rear upper support rod is connected with the upper portion of the front support rod and the front portion of the grab bar in a rotating mode around the first rotating center line, the lower portion of the rear support rod is connected to the rear lower support rod in a rotating mode, the side support frame on each side further comprises a side connecting rod extending in the front-rear direction, the rear portion of the side connecting rod is connected to the rear support rod in a rotating mode, and the front portion of the side connecting rod is connected with the upper portion of the rear upper support rod in a rotating mode.

3. The stroller of claim 2, wherein: the front part of the inclined strut is rotatably connected with a front connecting piece, the rear part of the inclined strut is rotatably connected with a rear connecting piece, and the front connecting piece is positioned below the first rotating center line in the length extending direction of the rear upper supporting rod and is not lower than the rotating connection position of the side connecting rod and the rear upper supporting rod; the rear connecting piece is located below the second rotation center line in the length extending direction of the rear support rod and is not lower than the rotation connecting position of the side connecting rod and the rear support rod.

4. The stroller of claim 3, wherein: the front connecting piece and the front part of the side connecting rod are rotationally connected to the upper part of the rear upper supporting rod around the same rotation center line; and/or the rear connecting piece is positioned above the side connecting rod on the rear support rod.

5. The stroller of claim 2, wherein: when the frame is in a folded state, the rear upper supporting rod and the rear lower supporting rod slide relatively to shorten and approach to the front supporting rod along the front-rear direction, the two groups of front wheel assemblies are positioned between the two groups of rear wheel assemblies along the left-right direction, and the front wheel assemblies and the rear wheel assemblies can be supported on the same plane together.

6. The stroller of claim 1, wherein: the two inclined supporting rods are rotatably connected around a first shaft at the intersection, the front part of each inclined supporting rod is rotatably connected with a front connecting piece through a second shaft, the rear part of each inclined supporting rod is rotatably connected with a rear connecting piece through a third shaft, the front connecting piece is rotatably connected to the upper part of the rear supporting rod around a fourth shaft, the rear connecting piece is rotatably connected to the rear supporting rod around a fifth shaft, the axial leads of the first shaft, the second shaft and the third shaft are parallel to each other, and the axial leads of the fourth shaft and the fifth shaft are parallel to each other.

7. The stroller of claim 6, wherein: the front connecting piece is positioned below the first rotating center line along the length extension direction of the rear supporting rod; and/or the rear connecting piece is positioned below the second rotation center line along the length extension direction of the rear supporting rod.

8. The stroller of claim 1, wherein: the grab rail, the front supporting rod and the rear supporting rod are sequentially arranged from outside to inside along the left and right direction of the frame, and the transverse supporting rod is arranged between the upper parts of the rear supporting rods at two sides;

9. The stroller of claim 1, wherein: when the frame is in the unfolded state, the first rotating center line is lower than the second rotating center line; when the frame is in a folded state, the second rotating center line is lower than the first rotating center line.

10. Child stroller according to any of claims 1 to 9, characterized in that: the cross brace assembly further comprises a front cross bar which is arranged between the lower parts of the two groups of front cross bars and can stretch out and draw back along the left-right direction, and a pedal piece is arranged on the front cross bar;