CN106428177B - Children trolley - Google Patents

Abstract

The invention discloses a stroller for children, which comprises a vehicle frame and a seat frame arranged on the vehicle frame. The side support at least includes a plurality of side support rods that are relatively rotatably connected, and one of the side support rods is a mounting rod for installing the seat pan frame. The seat frame at least includes a surrounding frame that can be folded in the left and right directions, and two connecting brackets that are respectively fixed on the left and right sides of the surrounding frame. The axis line is rotated relative to the connecting bracket. When the frame is folded once, the seat frame is turned over to one side of the frame; when the frame is folded twice, the side brackets on both sides are turned over relative to the cross brace assembly At the same time, the seat pocket frame is driven to be folded along the left and right directions. The baby stroller has a simple structure and realizes secondary folding with a seat pocket.

Description

stroller

technical field

The invention relates to a stroller for children, in particular to a stroller for children which can be folded in both directions with a seat pocket.

Background technique

In the prior art, children's strollers have various structural forms, and correspondingly, the folding principles and folded structures of each stroller are also different. At present, most of the children's strollers can only be folded longitudinally along the front-to-back direction, and the overall size of the folded strollers is relatively large, making it difficult to carry and store. There are also some carts that can be folded vertically and horizontally at the same time. However, when folding such carts, the seat pockets often need to be removed and folded separately. The folding operation is very inconvenient, and the volume of the folded cart is often still larger.

Contents of the invention

The purpose of the present invention is to provide a bidirectional foldable child stroller with a seat pocket.

In order to achieve the above object, the technical solution adopted by the present invention is: a children's stroller, including a vehicle frame with an unfolded state and a folded state, a seat frame arranged on the vehicle frame, and used to lock the vehicle frame In the locking mechanism in the unfolded state, the vehicle frame includes side brackets respectively located on the left and right sides, and cross brace assemblies connected between the side brackets on both sides, and the side brackets on each side at least include a plurality of relative rotation connections. Side support rods, one of the side support rods is a mounting rod for installing the seat frame, the cross support assembly includes a plurality of horizontal support rods that can be flipped and folded in the lateral direction, and the seat frame is at least It includes a surrounding frame that can be folded in the left and right directions, and two connecting brackets that are respectively fixed on the left and right sides of the surrounding frame. The rods can be rotatably arranged around their own axis relative to the connecting bracket. When the baby stroller is folded, all the side struts on the same side rotate relative to each other and move closer together in the front-rear direction so as to realize the support of the vehicle frame. After one fold, the seat frame is located on one side of the vehicle frame; then, all the cross braces are turned over and folded in the transverse direction, so that the side brackets on both sides are turned over and close to the cross brace The secondary folding of the vehicle frame is realized on the assembly, and the seat frame is driven to be folded in the left and right directions.

Preferably, the connecting bracket includes a connecting part, a mounting seat fixed to the connecting part and having a seat pocket interface, a socket fixed on the surrounding frame and capable of mating with the seat pocket interface. joint, the connecting portion is rotatably arranged on the mounting rod around the axis of the mounting rod, and when the frame is folded twice, the mounting rod rotates relative to the connecting portion to Realize flipping along the left and right directions.

Further, the connecting part is a sleeve that is relatively rotatably sleeved on the installation rod, and a stop for limiting the relative rotation angle between the sleeve and the installation rod is also provided. structure.

Furthermore, the limiting structure includes an arc-shaped groove opened on the sleeve, a limiting pin arranged on the installation rod and inserted in the arc-shaped groove, and the frame is During the secondary folding, the limit pin slides along the arc-shaped groove to form a limit when the installation rod rotates relative to the sleeve.

Preferably, the surrounding frame includes side surrounding bars respectively located on the left and right sides, and a connecting rod assembly connected between the side surrounding bars on both sides and capable of being folded in the left and right directions.

Further, the link assembly is arranged between the upper parts of the side wall bars on both sides, the link assembly includes a connection seat located between the side wall bars on both sides, one end is pivotally connected to the connection The first connecting rod on the seat and the other end is pivotally connected to the side wall rod on one side, and the other end is pivotally connected to the connecting seat and the other end is pivotally connected to the side wall rod on the other side. Second link.

As a specific implementation manner, there are two first connecting rods and two second connecting rods respectively, and the two first connecting rods are arranged parallel to each other, and the two second connecting rods are arranged parallel to each other. ground setting.

Preferably, each of the cross braces includes a support rod extending in the left-right direction, a first support rod that is pivotally connected to one end of the support rod and fixedly connected to the side bracket on one side, and pivotally connected to The other end of the support rod is fixedly connected to the second support rod on the side bracket on the other side. After the vehicle frame is folded once, all the first support rods on the cross brace assembly are opposite to all the first support rods. The rotation centerlines of the support rods when rotating are parallel or colinear to each other, and the rotation centerlines of all the second support rods are mutually parallel or colinear when rotating relative to the support rods; When folding for the second time, all the first support rods drive the side brackets on one side to overturn relative to all the support rods and move closer to the support rods, and all the second support rods drive the side brackets on the other side. The side brackets are overturned relative to all the support rods and close to the support rods.

Preferably, the plurality of side supports on the side support include a front support, a rear support and a push rod, the front support or the push rod is the installation rod, and the connecting bracket is installed On the front strut or the push rod.

Preferably, the plurality of side supports on the side brackets include front supports, rear supports and push rods, the push rods are the installation rods, and the connecting brackets are installed on the push rods , when the vehicle frame is folded once, the push rod turns backwards and moves closer to the front and rear struts on the same side in the front-to-rear direction, and the seat frame is positioned between the push rods. Driven to flip backwards and located at the rear side of the vehicle frame; when the vehicle frame is folded twice, the seat frame is folded along the left and right direction and located at the rear side of the vehicle frame.

Further, the plurality of side struts of the side support further include a seatpost extending in the front-rear direction, the upper part of the front strut is pivotally connected to the lower part of the push rod, and the rear strut The upper portion of the seat post is pivotally connected to the push rod, the front portion of the seat post is pivotally connected to the front strut and the rear portion of the seat post is pivotally connected to the rear strut, the When the vehicle frame is folded once, the push rod is reversed so that the front support rod, rear support rod, seat post and push rod on the same side are relatively rotated and folded together along the front-rear direction.

Furthermore, the plurality of cross braces include a first cross brace arranged between the front braces on both sides; and/or a second cross brace arranged between the rear braces on both sides rod; and/or a third cross brace arranged between the push rods on both sides; and/or a fourth cross brace arranged between the seat posts on both sides.

Due to the application of the above-mentioned technical solution, the present invention has the following advantages compared with the prior art: the children's stroller of the present invention includes a vehicle frame and a seat frame arranged on the vehicle frame, and when the vehicle frame is folded once, All the side struts on the side brackets are brought together in the front-rear direction so that the seat frame is located at the front or rear side of the frame; when the frame is folded for the second time, the side brackets on both sides are turned over relative to the cross brace assembly At the same time, the seat frame can be driven to be folded along the left and right directions. The baby stroller has a simple structure and can be folded twice with a seat pocket. After folding, the structure is flat and compact, and the occupied space is small, which brings convenience to the daily use of the user.

Description of drawings

Accompanying drawing 1 is the three-dimensional view of the children's stroller in embodiment 1 of the present invention in the unfolded state;

Accompanying drawing 2 is the side view of the children's stroller in the expanded state according to Embodiment 1 of the present invention;

Accompanying drawing 3 is the side view of the stroller of the embodiment 1 of the present invention after being folded once;

Accompanying drawing 4 is the front view of the children's stroller of Embodiment 1 of the present invention after being folded once;

Accompanying drawing 5 is the side view of the stroller of Embodiment 1 of the present invention after being folded twice;

Accompanying drawing 6 is the front view of the stroller of Embodiment 1 of the present invention after being folded twice;

Accompanying drawing 7 is the three-dimensional view of the stroller of the embodiment 1 of the present invention after being folded twice;

Accompanying drawing 8 is the three-dimensional view of the children's stroller in embodiment 2 of the present invention in the unfolded state;

Accompanying drawing 9 is the side view of the children's stroller of Embodiment 2 of the present invention after being folded once;

Among them: 100, frame; 200, seat frame; 1, front strut; 2, rear strut; 3, push rod; 31, limit pin; 4, seatpost; 5, first cross brace; 5 , the first cross brace; 6, the second cross brace; 7, the third cross brace; 8, the fourth cross brace; 51, 61, 71, 81, support rod; 52, 62, 72, 82, The first support rod; 53, 63, 73, 83, the second support rod; 9, the side wall rod; 10, the connecting rod assembly; 10a, the connecting seat; 10b, the first connecting rod; 10c, the second connecting rod; 11 , connecting bracket; 11a, connecting part (sleeve); 11b, mounting seat; 11c, plug joint; 11d, arc groove; 20, front wheel; 30, rear wheel.

Detailed ways

The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

Example 1

Referring to the children's stroller shown in Fig. 1 to Fig. 7, it includes a vehicle frame 100 having an unfolded state and a folded state, a seat frame 200 arranged on the vehicle frame 100, and a lock for locking the vehicle frame 100 in the unfolded state. locking mechanism. The vehicle frame 100 includes side brackets respectively located on the left and right sides, and a cross brace assembly connected between the side brackets on both sides.

The side brackets on each side at least include a front strut 1 with a front wheel 20 at the bottom, a rear strut 2 with a rear wheel 30 at the bottom, and a push rod 3. When folding the struts, the vehicle frame 100 undergoes two folding processes successively, which are the first folding and the second folding respectively. The front and back directions are folded together, that is, the side brackets on both sides are folded separately; when the secondary folding is performed, all the cross braces are turned and folded in the transverse direction, and the side brackets on both sides are turned and moved closer to the cross brace assembly.

Referring to the drawings, the seat frame 200 can be folded in the transverse direction, and it includes a surrounding frame that can be folded in the left and right directions and two connecting brackets 11 respectively fixed on the left and right sides of the surrounding frame. The connecting bracket 11 is connected to the push rod 3 on the same side as the connecting bracket 11 and is provided so as to be rotatable relative to the push rod 3 . In this way, when the vehicle frame 100 is folded once, when the push rod 3 is turned backward, the seat frame 200 is turned backward as a whole and is positioned at the rear side of the push rod 3, as shown in Figure 3; when the vehicle frame 100 is folded twice, , the seat frame 200 is folded in the left and right direction, and the push rod 3 rotates relative to the connecting bracket 11 when the side bracket is turned over relative to the cross brace, which makes the seat frame 200 not foldable during the secondary folding process of the vehicle frame 100. It will block the lateral folding of the vehicle frame 100 . After the above-mentioned secondary folding, the seat frame 200 is folded along the left and right directions and is located at the rear side of the vehicle frame 100 , as shown in FIG. 5 and FIG. 7 .

Specifically, referring to FIG. 2, the connecting bracket 11 includes a connecting portion 11a that is rotatably arranged on the push rod 3 around the axis of the push rod 3, and a mounting seat that is fixed to the connecting portion 11a and has a seat pocket interface. 11b. The plug connector 11c fixed on the surrounding frame is connected with the seat pocket interface on the mounting base 11b through the plug connector 11c, so that the seat frame 200 can be detachably installed on the vehicle frame 100 . When the vehicle frame 100 is folded twice, the push rod 3 rotates relative to the above-mentioned connecting portion 11a to realize the inversion along the left-right direction.

In this embodiment, the connecting part 11a is a sleeve that is relatively rotatably sleeved on the push rod 3, and a limiting structure for limiting the relative rotation angle between the sleeve and the push rod 3 is also provided. . Referring to Fig. 2, the position-limiting structure includes an arc-shaped groove 11d opened on the sleeve, a position-limiting pin 31 provided on the push rod 3 and inserted in the arc-shaped groove 11d, when the push rod 3 is opposite to the sleeve When rotation occurs, the limit pin 31 slides along the arc-shaped groove 11d to limit the rotation range of the push rod 3 relative to the sleeve. Certainly, the above-mentioned position-limiting structure can also be that the arc-shaped groove is provided on the push rod and the position-limiting pin is arranged on the sleeve, and the position-limiting functions played by them are the same.

As shown in the drawings, the frame of the seat frame 200 includes side rails 9 located on the left and right sides, and a connecting rod assembly 10 connected between the side rails 9 and foldable in the left and right directions. When the connecting rod assembly 10 is folded in the left and right directions, the side wall bars 9 on both sides are gradually approached in the left and right directions to realize the lateral folding of the seat frame 200 . In this embodiment, as shown in FIG. 1 , the connecting rod assembly 10 is arranged between the upper parts of the side wall rods 9 on both sides. The connecting rod assembly 10 includes a connecting seat 10a located between the side wall rods 9 on both sides, a first connecting rod 10b whose one end is pivotally connected to the connecting seat 10a and the other end is pivotally connected to the side wall rod 9 on one side. 1. One end of the second connecting rod 10c is pivotally connected to the connecting base 10a and the other end is pivotally connected to the side wall rod 9 on the other side. The connecting base 10a can also be provided for connecting the first connecting rod 10b to the second connecting rod 10a. The two connecting rods 10c are locked so that the connecting rod assembly 10 deploys a locking member (not shown in the figure) between the side wall rods 9 on both sides along the left and right direction.

Here, two first connecting rods 10b and two second connecting rods 10c are provided respectively, and the two first connecting rods 10b are arranged parallel to each other, and the two second connecting rods 10c are arranged parallel to each other. When the seat frame 200 is unfolded, as shown in FIG. 1 , the first connecting rod 10b and the second connecting rod 10c are deployed along the left and right directions and are supported between the side rails 9 on both sides; It can drive the ends of all the first connecting rods 10b and the second connecting rods 10c connected to them to move, so that the first connecting rods 10b and the second connecting rods 10c rotate respectively and gradually move closer along the left and right directions, so that the ends of the two sides The side rails 9 gradually move closer along the left and right directions to realize the lateral folding of the seat frame 200 . In this embodiment, the first connecting rod 10b and the second connecting rod 10c are respectively extended obliquely in the left and right horizontal directions, so that after the locking piece on the connecting seat 10a is unlocked, the force along the left and right directions of the side wall rods 9 on both sides is applied. At this time, the first connecting rod 10b and the second connecting rod 10c can automatically rotate relative to the side wall rod 9 to realize the lateral folding of the seat frame 200 .

The specific structure of the vehicle frame 100 in the present embodiment is as follows: the side bracket on each side also includes a seat post 4 extending in the front-rear direction, the upper part of the front support bar 1 is pivotally connected with the lower part of the push rod 3, and the rear support bar 2 The upper part of the seat post is pivotally connected to the push rod 3, the front part of the seatpost 4 is pivotally connected to the front strut 1 and the rear part is pivotally connected to the rear strut 2. When the vehicle frame 100 is unfolded, the front strut 1 and the push rod 3 on the same side bracket extend along the same length direction, so that the front strut 1, the push rod 3, the rear strut 2 and the seat post 4 of the same side bracket form a stable triangular structure. After the locking mechanism on the vehicle frame is unlocked, turning the push rod 3 backwards can make the front support rod 1, rear support rod 2, seat post 4 and push rod 3 on the same side rotate relatively and gradually gather in the front and rear directions. Together, the longitudinal folding of the vehicle frame 100 is realized, that is, one-time folding of the vehicle frame 100 is realized.

As shown in the accompanying drawings, the cross brace assembly includes a plurality of cross brace rods that can be flipped and folded in the transverse direction. In this embodiment, as shown in Fig. 1 and Fig. 4, the plurality of cross struts include a first cross strut 5 disposed between the lower parts of the front struts 1 on both sides, and a first cross strut 5 disposed between the lower parts of the rear struts 2 on both sides. The second cross brace 6 between them, the third cross brace 7 arranged between the tops of the push rods 3 on both sides, and the fourth cross brace 8 arranged between the rear parts of the seatposts 4 on both sides.

Specifically, as shown in FIG. 4 , the first cross brace 5 includes a support rod 51 extending in the left-right direction, and a first support that is pivotally connected to one end of the support rod 51 through an axis a and fixed on one side of the front support rod 1. The rod 52 is pivotally connected to the other end of the support rod 51 through the axis a' and is fixed to the second support rod 53 on the front support rod 1 on the other side; the second cross support rod 6 includes a support rod 61 extending in the left and right direction, The first support rod 62 pivotally connected to one end of the support rod 61 through the axis b and fixed on the rear support rod 2 on one side is pivotally connected to the other end of the support rod 61 through the axis b' and fixed to the rear support rod on the other side The second strut 63 on 2; the third cross strut 7 includes a support bar 71 extending in the left-right direction, a first support that is pivotally connected to one end of the support bar 71 through a shaft c and fixed on the top of one side of the push rod 3 The rod 72 is pivotally connected to the other end of the support rod 71 through the shaft c' and is fixed to the second support rod 73 on the top of the push rod 3 on the other side; the fourth cross brace 8 includes a support rod 81 extending in the left and right direction, The axis d is pivotally connected to one end of the support rod 81 and fixed to the first support rod 82 on the rear of one side of the seatpost 4, and is pivotally connected to the other end of the support rod 81 through the axis d' and fixed to the other side of the seatpost 4. Second strut 83 on the rear.

When the vehicle frame 100 is locked in the unfolded state, the first cross brace 5, the second cross brace 6, the third cross brace 7, and the fourth cross brace 8 of the cross brace assembly are respectively deployed laterally and supported on both sides. between the side brackets 10. And when the vehicle frame 100 completes the longitudinal folding, the front strut 1, the rear strut 2, the push rod 3 and the seat post 4 on the side bracket on the same side are all moved closer together. The cross struts 6, the third cross struts 7, and the fourth cross struts 8 are at different height positions, and the axis lines of the rotating shafts a, b, c, and d extend parallel to each other or collinearly, and the rotating shafts a', b' , c', d' are parallel to each other or extend co-linearly. In this embodiment, the axis lines of the rotating shafts a, b, c, d are co-linearly extending, and their common axis is mm'; The axes of a', b', c', and d' are also colinear extensions, and their common axis is nn'. Together, they can rotate around the axis line mm' relative to all the support rods 51, 61, 71, 81 and move closer to the support rod; the side bracket on the right side and all the second rods 53, 63, 73, 83 can rotate The axis line nn' rotates relative to all the support rods 51, 61, 71, 81 and moves closer to the support rods. During specific operation, the side brackets on both sides can be turned towards the rear side of the vehicle frame 100 , so that the side brackets on both sides can be folded to the front sides of all the support rods 51 , 61 , 71 , 81 .

In summary, when the stroller is unfolded, as shown in Fig. 1 and Fig. 2, the frame 100 is locked in the unfolded state, the seat frame 200 is installed on the push rod 3 through the connecting bracket 11, and it is unfolded in the left and right directions. And it is located on the front side of the push rod 3, and its surrounding frame is locked by the locking member. In this unfolded state, the vehicle frame 100 and the seat frame 200 all have good rigidity and stability.

When the stroller needs to be folded, first unlock the locking mechanism on the vehicle frame 100, and then turn the push rod 3 together with the seat frame 100 backwards, so that the front pole 1 and the rear pole on the side brackets on both sides The rod 2, the push rod 3 and the seat post 4 are relatively rotated and folded together along the front and rear directions to realize one-time folding of the vehicle frame 100. At this time, the seat frame 200 is located at the rear side of the push rod 3, that is, the vehicle frame after the primary folding The rear side of 100 is shown in Fig. 3 and Fig. 4 . At this time, on the vehicle frame 100, each cross strut is at a different height position, and all the first connecting rods are connected to the corresponding support rods along the axis line of the shaft along mm', and all the second connecting rods The axes of the rotating shafts connected to the corresponding support rods are collinear along nn'.

Then, the operator flips the side brackets on both sides towards the front side of the vehicle frame 100, and the push rod 3 rotates around its own axis relative to the connecting bracket 11. The side rails 9 on the side are gradually moved closer to the left and right, so that the seat frame 200 is gradually folded in the left and right direction, so that the side brackets on both sides are gradually moved closer to the cross brace assembly, realizing the secondary folding of the vehicle frame 100 , as shown in FIGS. 5 , 6 and 7 , the seat frame 200 is folded along the left and right directions and is located at the rear side of the folded vehicle frame 100 . The folded baby stroller has a flat and compact structure and can stand on the ground independently.

Example 2

Referring to the children's stroller shown in FIG. 8 and FIG. 9 , the only difference between it and Embodiment 1 is the installation position of the seat frame 200 . In this embodiment, the seat frame 200 is installed on the front struts 1 on both sides through the connecting bracket 11 .

When the stroller is folded, the front strut 1, the rear strut 2 and the push rod 3 on the frame 100 are relatively rotated and moved closer together along the front and rear directions so as to realize the primary folding of the frame 100, and the seat frame 200 remains on the two sides. The front side of the side front strut 1; then, the side brackets on both sides are respectively turned over relative to the cross brace assembly and moved closer to the cross brace assembly so as to realize the secondary folding of the vehicle frame 100. During the secondary folding process, the front support The rod 1 rotates around its own axis relative to the connecting portion 11a of the connecting bracket 11 to realize turning over in the left-right direction, and at the same time drives the seat frame 200 to fold in the left-right direction.

In addition, when the upper frame of the stroller adopts other structures, the two-way folding of the pocket frame with seat can also be realized in a similar manner as above. Specifically, one of the multiple side supports of the side bracket is used as a mounting rod for installing the seat frame, and the connecting bracket of the seat frame is installed on the mounting rod and the mounting rod can be opposite to each other around its own axis. What is necessary is just to arrange|position the connection bracket so that it may rotate. When the stroller is folded, when the frame is folded at one time, all the side struts on the side brackets rotate relative to each other and get closer together along the front and rear directions, and the seat frame is located on one side of the frame driven by the above-mentioned mounting rods; then The side brackets on both sides are respectively turned over relative to the cross brace assembly and moved closer to the cross brace assembly to realize the secondary folding of the frame. Turning over in the left and right directions simultaneously drives the seat frame to fold in the left and right directions.

The above-mentioned embodiments are only to illustrate the technical concept and characteristics of the present invention, and the purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly, and not to limit the protection scope of the present invention. All equivalent changes or modifications made according to the spirit of the present invention shall fall within the protection scope of the present invention.

Claims (11)

1. A child stroller, comprising a vehicle frame with an unfolded state and a folded state, a seat frame provided on the vehicle frame, and a locking mechanism for locking the vehicle frame in the expanded state, characterized in that : the vehicle frame includes side brackets respectively located on the left and right sides, a cross brace assembly connected between the side brackets on both sides, the side brackets on each side at least include a plurality of side brackets connected in relative rotation, one of which The side struts are installation rods for installing the seat frame, the cross brace assembly includes a plurality of cross struts that can be flipped and folded in the lateral direction, and the seat frame at least includes The surrounding frame, two connecting brackets respectively fixed on the left and right sides of the surrounding frame, the connecting brackets are connected to the same side of the mounting rod and the mounting rod can rotate around its own axis is rotationally arranged relative to the connecting bracket, When the stroller is folded, all the side struts on the same side rotate relative to each other and close together in the front-rear direction so as to realize the one-time folding of the vehicle frame, and the seat frame is located on one side of the vehicle frame ; Then, all the cross braces are turned over and folded in the transverse direction, so that the side brackets on both sides are turned over and close to the cross brace assembly to realize the secondary folding of the vehicle frame, and drive the The seat frame is folded along the left and right directions, wherein the connecting bracket includes a connecting portion, and the connecting portion is a sleeve rotatably sleeved on the mounting rod around the axis of the mounting rod. A limiting structure is also provided between the sleeve and the installation rod to limit the relative rotation angle between the two. When the frame is folded twice, the installation rod rotates relative to the connecting part to Realize flipping along the left and right directions. 2. The children's stroller according to claim 1, characterized in that: the connecting bracket further includes a mounting base fixed to the connecting part and having a seat pocket interface, fixed on the surrounding frame and capable of A plug joint mated with the seat pocket interface. 3. The children's stroller according to claim 2, wherein the limiting structure includes an arc-shaped groove opened on the sleeve, set on the mounting rod and inserted in the arc-shaped slot. The limit pin in the groove, when the vehicle frame is folded twice, the limit pin slides along the arc-shaped groove to form a limit when the installation rod rotates relative to the sleeve. 4. The stroller according to claim 1, characterized in that: the surrounding frame includes side surrounding bars respectively located on the left and right sides, which are connected between the side surrounding bars on both sides and can be folded along the left and right directions connecting rod components. 5. The children's stroller according to claim 4, characterized in that: the connecting rod assembly is arranged between the upper parts of the side wall rods on both sides, and the connecting rod assembly includes the side wall rods on both sides The connecting seat between them, one end is pivotally connected to the connecting seat and the other end is pivotally connected to the first link on the side wall bar, one end is pivotally connected to the connecting seat and the other end is pivotally connected to the side wall bar. A second link pivotally connected to the side wall bar on the other side. 6. The children's stroller according to claim 5, wherein there are two first connecting rods and two second connecting rods respectively, and the two first connecting rods are arranged parallel to each other, and the two first connecting rods are arranged parallel to each other. The second connecting rods are arranged parallel to each other. 7. The children's stroller according to claim 1, wherein each of the cross braces includes a support rod extending in the left and right direction, pivotally connected to one end of the support rod and fixedly connected to one side of the support rod. The first pole on the side support, the second pole that is pivotally connected to the other end of the support pole and fixedly connected to the side support on the other side, after the vehicle frame is folded once, The rotation centerlines of all the first struts on the cross brace assembly when they rotate relative to the support rod extend parallel to each other or collinearly, and the rotation centerlines of all the second struts when they rotate relative to the support rod extend mutually. extending in parallel or collinearly; when the vehicle frame is folded twice, all the first support rods drive the side brackets on one side to flip over all the support rods and move closer to the support rods, All the second support rods drive the side bracket on the other side to overturn relative to all the support rods and move closer to the support rods. 8. The stroller according to any one of claims 1 to 7, wherein the plurality of side struts on the side brackets include a front strut, a rear strut and a push rod, and the front struts Or the push rod is the installation rod, and the connecting bracket is installed on the front support rod or the push rod. 9. The stroller according to any one of claims 1 to 7, wherein the plurality of side struts on the side brackets include a front strut, a rear strut and a push rod, and the push rod is The installation rod, the connecting bracket is installed on the push rod, and when the vehicle frame is folded once, the push rod turns backward and connects with the front support rod and the rear support rod on the same side. The poles move closer together in the front-rear direction, and the seat frame is turned backwards under the drive of the push rod and is located at the rear side of the frame; when the frame is folded twice, the seat frame The frame is gathered in the left-right direction and is located at the rear side of the vehicle frame. 10. The children's stroller according to claim 9, characterized in that: the plurality of side supports of the side brackets further include a seat post extending in the front-rear direction, and the upper part of the front support bar is connected to the The lower portion of the push rod is pivotally connected, the upper portion of the rear strut is pivotally connected to the push rod, the front portion of the seat post is pivotally connected to the front strut and the rear of the seat post is pivotally connected to the push rod. The upper part is pivotally connected to the rear strut, and when the vehicle frame is folded once, the push rod is flipped backward so that the front strut, rear strut, seat post and push rod on the same side The rods are relatively rotated to be gathered together in the front-rear direction. 11. The children's stroller according to claim 10, characterized in that: the plurality of said cross struts include a first cross strut arranged between said front struts on both sides; and/or the third cross brace arranged between the push rods on both sides; and/or the first cross brace arranged between the seat posts on both sides Four cross struts.