CN209479739U - a children's stroller - Google Patents

Abstract

The utility model discloses a children's stroller, which comprises a frame with an unfolded state and a folded state; the frame comprises a transverse support which is connected between side support assemblies; the transverse support comprises at least one transverse support component, and the transverse support component includes two A transverse strut with an inner end and an outer end respectively, the inner ends of the two transverse struts are rotatably connected, the outer end of one of the transverse struts is rotatably connected with one of the side bracket assemblies, and the other transverse The outer end of the strut is rotatably connected with the other side bracket assembly; the transverse strut assembly also includes an inner link for making the two transverse struts rotate close to each other, and one end of the inner link and the side bracket assembly are slidable and It is rotatably connected so as to be able to move correspondingly with the unfolding or folding of the side bracket assembly, and the other end of the inner link is rotatably connected with the transverse strut to drive the transverse strut to rotate. The stroller is easy to operate and compact in size after being folded.

Description

a children's stroller

technical field

The utility model relates to the field of children's products, in particular to a children's stroller.

Background technique

Children's strollers are widely used for children's travel and greatly facilitate children's travel. However, when the children's stroller is carried or stored, it often faces the problem that the entire vehicle body occupies a large volume. In order to solve this problem, the current children's strollers generally have a folding function, which can be carried or stored after being folded, and especially the strollers that can be folded horizontally for a second time have a smaller volume.

At present, among the strollers that can be folded horizontally twice, a cross brace assembly composed of two intersecting connecting rods is generally used to connect the side bracket assemblies on both sides. Although the stroller with this structure can be easily folded, However, the folded volume is still relatively large, and it is still not convenient to carry and store, and the folded stroller has space for further reducing the volume.

Utility model content

In view of the above problems, the purpose of the present invention is to provide a stroller for children, which is easy to operate and compact in size after being folded.

To achieve the above object, the utility model adopts the following technical solutions:

A child stroller includes a frame with unfolded and folded states, a front wheel arranged in front of the bottom of the frame, and a rear wheel arranged behind the bottom of the frame; the frame includes at least two sides a bracket assembly and a cross bracket connected between the side bracket assemblies;

The transverse support includes at least one transverse strut assembly, the transverse strut assembly includes two transverse struts with inner ends and outer ends respectively, and the inner ends of the two transverse struts are rotatably connected, and one of the transverse struts is rotatably connected. The outer end of the transverse strut is rotatably connected with one of the side bracket assemblies, and the outer end of the other transverse strut is rotatably connected with the other side bracket assembly;

The cross brace assembly also includes an inner link for rotating the two cross brace rods closer to each other, and one end of the inner link and the side bracket assembly are slidably and rotatably connected to be able to move with each other. The side bracket assembly is unfolded or folded to move correspondingly, and the other end of the inner link is rotatably connected with the cross brace to drive the cross brace to rotate;

When the frame is in the unfolded state, the two cross braces are unfolded relative to each other, and when the vehicle frame is in the folded state, the outer ends of the two cross braces are close to each other.

Preferably, each of the side bracket assemblies includes a front wheel bracket for arranging the front wheel and a rear wheel bracket for arranging the rear wheel, respectively, and the transverse bracket includes a bracket arranged on the two side bracket assemblies. A first cross brace assembly between the front wheel brackets and a second cross brace assembly disposed between the rear wheel braces of the two side bracket assemblies.

More preferably, the inner link of the first cross brace assembly is rotatably connected to a first sliding member, and the first sliding member is slidably arranged on the front wheel bracket; the second cross brace The inner link of the assembly is rotatably connected to a second sliding piece, and the second sliding piece is slidably arranged on the rear wheel bracket.

Further, each of the side bracket assemblies further includes a link assembly for driving the first sliding member and/or the second sliding member to move as the side bracket assemblies are unfolded or folded.

Further, the link assembly includes a rear strut for driving the second sliding member to move, a pull rod and a front strut for linking the first sliding member and the second sliding member, so The rear end of the rear strut is rotatably connected to the second sliding member, the front end of the rear strut is connected to other parts of the side bracket assembly except the rear wheel bracket, and the front end of the pull rod is rotatably connected to the front wheel bracket, the rear end of the pull rod is rotatably connected to the second sliding member, the upper end of the front strut is rotatably connected to the pull rod, the front The lower end of the strut is rotatably connected to the first sliding member.

In a specific embodiment, the side bracket assembly further includes an upper push rod, a lower push rod whose upper end is rotatably connected to the upper push rod, and an upper end that is rotatably connected to the lower end of the upper push rod. The side strut, the lower end of the push rod, the upper end of the front wheel bracket and the upper end of the rear wheel bracket are connected relative to each other for rotation or coaxial rotation, and the lower end of the side strut The front end of the rear strut is rotatably connected to the side strut or the lower push rod, and the rear end of the rear strut is rotatably connected to the rear wheel bracket. on the second slider.

Further, the side bracket assembly further includes a seat post, a rear end portion of the seat post is rotatably connected to the side stay, and a front portion of the seat post is slidably and rotatably connected to the lower portion. A push rod, the transverse bracket further includes a cross brace assembly connected between the seat posts.

Preferably, the end of the inner link is connected to the side bracket assembly through a sliding member, the end of the inner link is rotatably connected to the sliding member, and the sliding member is slidably connected to the side bracket assembly.

Preferably, the inner ends of the two transverse struts are rotatably connected to each other through a first pivot, and the outer ends of the transverse struts are rotatably connected to the side bracket assembly through a second pivot. One end of the connecting rod is rotatably connected to the side bracket assembly through a third pivot shaft, and the other end of the inner link is rotatably connected to the transverse strut through a fourth pivot shaft. The axis lines of the first pivot shaft, the second pivot shaft, the third pivot shaft and the fourth pivot shaft are parallel to each other.

Preferably, the lengths of the two cross braces of the same cross brace assembly are equal.

Combined with the above, the present utility model adopts the above technical solutions, which has the following advantages compared with the prior art:

One end of the inner link is slidably and rotatably connected to the side bracket assembly, and the other end is rotatably connected to the cross brace, the inner link drives the two cross braces when the side brace assembly is folded By moving closer to each other, the cross brace assembly can be folded, and the operation is convenient, and the transverse dimension of the folded cross brace assembly is small, which reduces the size of the folded child stroller and makes the folded volume relatively small.

Description of drawings

In order to illustrate the technical solutions of the present invention more clearly, the following briefly introduces the drawings used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

1 is a perspective view of a stroller according to the present invention, wherein the frame is in an unfolded state;

Fig. 2 is the partial enlarged view of A place in Fig. 1;

Fig. 3 is a partial enlarged view at B in Fig. 1;

Figure 4 is a side view of the stroller shown in Figure 1;

Figure 5 is a perspective view of the stroller shown in Figure 1, wherein the frame is in the process of folding;

Figure 6 is a side view of the stroller shown in Figure 5;

FIG. 7 is a perspective view of the stroller shown in FIG. 1 , wherein the frame is in a folded state;

FIG. 8 is a side view of the stroller shown in FIG. 7 .

in,

1. Side bracket assembly; 11, Upper push rod; 111, Upper rod; 112, Lower rod; 12, Lower push rod; 13, Front wheel bracket; 131, First sliding sleeve; 14, Rear wheel bracket; 141, No. Two sliding sleeves; 15, side stay; 16, rear stay; 17, tie rod; 18, front stay; 19, seat post; 191, seat post sliding sleeve;

2. Transverse bracket; 21a, transverse strut; 21b, transverse strut; 22a, inner link; 22b, inner link; 23, first link; 24, second link; 201, first transverse strut assembly ; 202, the second cross brace assembly; 203, the cross brace assembly; 204, the push rod connection assembly;

3. Front wheel;

4, the rear wheel.

Detailed ways

The preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art. The orientation words mentioned in the present utility model are defined according to the usual viewing angle of the unfolded stroller by those skilled in the art, for example, "front" and "rear" correspond to the left and right sides of the paper in Figure 2, respectively. side.

1-8, a stroller includes a frame with unfolded and folded states, a front wheel 3 disposed in front of the bottom of the frame, and a rear wheel 4 disposed behind the bottom of the frame. The frame includes at least two side bracket assemblies 1 and a transverse bracket 2 connected between the side bracket assemblies 1 . In this embodiment, the number of side bracket assemblies 1 is two, and they are located on the left and right sides of the stroller, respectively. In another embodiment, the number of side bracket assemblies 1 may be three. The cross brackets 2 are used to connect the side bracket assemblies 1 on both sides.

As shown in FIG. 2 and FIG. 3 , the cross bracket 2 includes at least one cross brace assembly. Each cross brace assembly includes two cross brace bars (ie, cross brace bar 21a and cross brace bar 21b) having inner and outer ends, respectively, the inner ends of the cross brace bar 21a and the cross brace bar 21b being opposite to each other. Rotational connection, wherein the outer end of the transverse strut 21a is rotatably connected with one of the side bracket assemblies 1 , and the outer end of the transverse strut 21b is rotatably connected with the other side bracket assembly 1 . The cross brace assembly also includes an inner link (ie, inner link 22a and/or inner link 22b) for rotating the cross brace bar 21a and the cross brace bar 21b closer to each other, one end of the inner link and the side bracket assembly 1 is slidably and rotatably connected so as to be able to move correspondingly with the folding of the side bracket assembly 1, and the other end of the inner link is rotatably connected with the cross brace 21a and/or the cross brace 21b to drive the cross brace 21a and the cross brace. The stay 21b rotates. Specifically, the cross brace assembly includes an inner link 22a and an inner link 22b, the lower end of the inner link 22a and the left side bracket assembly 1 are slidably and rotatably connected, and the upper end of the inner link 22a and the cross brace The rods 21a are rotatably connected; the lower end of the inner link 22b is slidably and rotatably connected to the right side bracket assembly 1 , and the upper end of the inner link 22b is rotatably connected with the transverse strut 21b. The lower ends of the inner link 22a and the inner link 22b are respectively connected to the side bracket assembly 1 through the sliding piece, the lower ends of the inner link 22a and the inner link 22b are respectively rotatably connected to the sliding piece, and the sliding piece is slidably connected In the side bracket assembly 1, the sliding member is specifically a sliding sleeve. When the frame is in the unfolded state, the cross brace bar 21a and the cross brace bar 21b are relatively unfolded and extend along the left and right directions of the stroller. Triangular structure, each transverse strut 21b and the inner link 22b on the corresponding side and the side bracket assembly 1 form a triangular structure; when the frame is in the folded state, the outer ends of the transverse strut 21a and the transverse strut 21b are close to each other , the inner ends of the transverse struts 21a and 21b are located above or below their outer ends, and the transverse struts 21a, the transverse struts 21b, the inner link 22a, the inner link 22b and the side bracket assembly 1 are close to each other . In addition, the lengths of the cross braces 21a and 21b of the same cross brace assembly are equal, and the left and right mirrors of the cross brace assembly are symmetrical to reduce the distance between the two side support assemblies 1 after folding, that is, to reduce the lateral dimension. More preferably, the transverse support 2 includes a plurality of transverse strut assemblies, and the lengths of the transverse struts of each transverse strut assembly are equal.

Each side bracket assembly 1 includes a front wheel bracket 13 for arranging the front wheel 3 and a rear wheel bracket 14 for arranging the rear wheel 4 . The cross brace 2 includes a first cross brace assembly 201 disposed between the front wheel braces 13 of the two side brace assemblies 1 and a second cross brace assembly 202 disposed between the rear wheel braces 14 of the two side brace assemblies 1 . Referring to FIG. 2 , in the first cross brace assembly 201 , the outer ends of the cross brace bar 21 a and the cross brace bar 21 b are respectively rotatably connected to the front wheel bracket 13 , and the upper end of the inner link 22 a is rotatably connected to the front wheel bracket 13 . It is connected between the two ends of the transverse strut 21a, the upper end of the inner link 22b is rotatably connected between the two ends of the transverse strut 21b, and the lower ends of the inner link 22a and the inner link 22b are respectively rotatable. It is rotatably connected to a first sliding member. The first sliding member is specifically a first sliding sleeve 131 slidably sleeved on the front wheel bracket 13 . below the rod 21b. 3 , in the second cross brace assembly 202, the outer ends of the cross brace bar 21a and the cross brace bar 21b are respectively rotatably connected to the rear wheel bracket 14, and the upper end of the inner link 22a is rotatably connected to the rear wheel bracket 14. It is connected between the two ends of the transverse strut 21a, the upper end of the inner link 22b is rotatably connected between the two ends of the transverse strut 21b, and the lower ends of the inner link 22a and the inner link 22b are respectively It is rotatably connected to a second sliding member, and the second sliding member is specifically a second sliding sleeve 141 slidably sleeved on the rear wheel bracket 14 . Below the strut 21b.

Referring to FIG. 2 , the inner ends of the transverse struts 21a and 21b are rotatably connected through the first pivot axis a1, and the outer ends of the transverse struts 21a and 21b are respectively connected with the second pivot axis a2. The side bracket assembly 1 is rotatably connected, the lower ends of the inner link 22a and the inner link 22b are respectively rotatably connected to the side bracket assembly 1 through the third pivot a3, and the upper end of the inner link 22a is connected with the fourth pivot a4. The transverse struts 21a are rotatably connected, and the upper end of the inner link 22b is rotatably connected with the transverse struts 21b through the fourth pivot a4. The first pivot a1, the second pivot a2, the The axis lines of the third pivot axis a3 and each fourth pivot axis a4 are parallel to each other, and preferably perpendicular to the plane where the center lines of the two front wheel brackets 13 are located or the center lines of the two rear wheel brackets 14 are located together. the plane at.

Each side bracket assembly 1 further includes a link assembly for driving the first sliding sleeve 131 and/or the second sliding sleeve 141 to slide when the side bracket assembly 1 is unfolded or folded. When folded, the link assembly moves accordingly, thereby driving the first sliding sleeve 131 to slide along the front wheel bracket 13 and/or the second sliding sleeve 141 to slide along the rear wheel bracket 14 . The link assembly specifically includes a rear strut 16 for driving the second sliding sleeve 141 to move, a pull rod 17 and a front strut 18 located between the first sliding sleeve 131 and the second sliding sleeve 141 to link the two, and the rear strut 18. The rear end of 16 is rotatably connected to the second sliding sleeve 141, the front end of the rear strut 16 is connected to other parts of the side bracket assembly 1 except the rear wheel bracket 14, and the front end of the pull rod 17 is rotatably connected to the front In the wheel bracket 13, the rear end of the pull rod 17 is rotatably connected to the second sliding sleeve 141, the upper end of the front strut 18 is rotatably connected between the two ends of the pull rod 17, and the lower end of the front strut 18 is rotatable. It is rotatably connected to the first sliding sleeve 131 .

1 and 4, each side bracket assembly 1 specifically includes the front wheel bracket 13, the rear wheel bracket 14, the rear strut 16, the pull rod 17, the front strut 18, and the push-up Rod 11 , lower push rod 12 and side strut 15 . The upper push rod 11 is composed of an upper rod 111 and a lower rod 112 which are arranged up and down and are fixedly connected as a whole. . The lower end of the lower push rod 12, the upper end of the front wheel bracket 13 and the upper end of the rear wheel bracket 14 are connected in a relative rotation or coaxial rotation connection, for example, the two parts are first connected by a pivot, and the second The three components are then rotatably connected to one of the above two components through another pivot shaft; or the three components are rotatably connected through the same pivot shaft. Specifically in this embodiment, the lower end of the lower push rod 12 and the upper end of the front wheel bracket 13 are respectively pivotally connected to the upper part of the rear wheel bracket 14 . The upper end of the side stay 15 is rotatably connected to the lower end of the lower rod 112 of the upper push rod 11 , and the lower end of the side stay 15 is rotatably connected to the rear wheel bracket 14 . Specifically, the front end of the rear strut 16 is rotatably connected between the two ends of the side strut 15 , or is rotatably connected between the two ends of the lower push rod 12 .

The side bracket assembly 1 further includes a seat post 19 , the rear end portion of which is rotatably connected to the side stay 15 , and the front portion of the seat post 19 is slidably and rotatably connected to the lower push rod 12 . Specifically in this embodiment, the seat post 19 is slidably inserted into the seat post sliding sleeve 191, and the seat post sliding sleeve 191 is rotatably connected to the lower push rod 12; The upper end of the s is rotatably connected to the side struts 15 through the same pivot.

As shown in FIG. 1 , the cross bracket 2 further includes a cross brace assembly 203 connected between the seat posts 19 of the two side bracket assemblies 1 . The cross brace assembly 203 includes two groups of first connecting rods 23 , and each group of first connecting rods 23 includes two first connecting rods 23 that cross each other to form a cross-shaped structure. The middle parts of the two first links 23 of each group are rotatably connected to each other, the outer ends thereof are respectively rotatably connected to the seat post 19, and the inner ends are respectively rotatably connected to the two first links 23 of the other group. the inner end of the . The cross brace assemblies 203 between the seat posts 19 may also be replaced by the cross brace assemblies described above.

The cross bracket 2 further includes a push rod connecting assembly 204 connected between the upper ends of the upper push rods 11 of the two side bracket assemblies 1 . The push rod connecting assembly 204 includes two second connecting rods 24 , the inner ends of the two second connecting rods 24 are rotatably connected, and the outer ends of the second connecting rods 24 are rotatably connected to the upper end of the upper push rod 11 .

The "rotational connection" mentioned in this embodiment all refers to a pivot connection, through which two parts or three parts are connected and the parts are allowed to rotate relative to each other.

1-4, when the frame is in the unfolded state, the transverse support 2 is unfolded, wherein the two transverse support rods 21a and 21b of the first transverse support assembly 201 are extended relative to each other and extend along the left and right directions of the stroller, Expand the front wheel brackets 13 on both sides; the two transverse struts 21a and 21b of the second transverse support assembly 202 are relatively expanded and extend along the left and right directions of the stroller, so that the rear wheel brackets 14 on both sides are expanded; the cross support assembly 203 is deployed to deploy the seatposts 19 on both sides; the two second links 24 of the push rod connecting assembly 204 are deployed and extend along the left and right directions of the stroller to deploy the upper push rods 11 on both sides. The upper push rod 11 , the lower push rod 12 , the front wheel support 13 , the rear wheel support 14 and the side struts 15 of each side bracket assembly 1 are spread out from each other.

5 and 6, when the frame is folded, the locking mechanism between the upper push rod 11 and the lower push rod 12 is unlocked, and the upper push rod 11 is pressed down against the rear wheel bracket 14, and the side stay 15 Pushing the rear support rod 16 makes the second sliding sleeve 141 move downward, and drives the pull rod 17 to rotate, so that the front wheel bracket 13 and the rear wheel bracket 14 are moved closer together, and the front support rod 18 rotates accordingly to push the first sliding sleeve 131 downward. Move; with the downward movement of the second sliding sleeve 141 and the first sliding sleeve 131, the inner link 22a and the inner link 22b rotate to pull down the horizontal brace 21a and the horizontal brace 21b to rotate, driving the first horizontal brace assembly 201 , The second cross brace assembly 202 is folded, and the cross brace assembly 203 and the push rod connecting assembly 204 are folded together.

7 and 8 , when the frame is in the folded state, the rods of each side bracket assembly 1 are respectively close to each other, the lateral struts 21a and 21b of the first cross-bracing assembly 201 and the inner link 22a and the inner link 22b to make the front wheel brackets 13 on both sides close together, and the two transverse struts 21a and 21b, the two inner links 22a and the inner link 22b of the second cross brace assembly 202 to move closer to make the The rear wheel brackets 14 on both sides are drawn together, the cross brace assembly 203 is retracted to make the seat posts 19 on both sides move closer to each other, and the two second links 24 of the push rod connecting assembly 204 are drawn together to make the upper push rods 11 on both sides move closer to each other, thereby The folding of the stroller in the lateral direction (ie, the left and right directions) is realized, and the two side bracket assemblies 1 are folded close to each other.

When the side bracket assembly 1 is folded, the first cross brace assembly 201 and the second cross brace assembly 202 are driven to fold, which is convenient to operate, and the folded first cross brace assembly 201 and the second cross brace assembly 202 have smaller lateral dimensions. The folded size of the stroller (especially the size in the left-right direction) is reduced, making the folded volume smaller.

The above-mentioned embodiments are only for illustrating the technical concept and characteristics of the present utility model, and are preferred implementations. The purpose is that those who are familiar with the technology can understand the contents of the present utility model and implement them accordingly, and cannot limit the present utility model with this. scope of protection. All equivalent transformations or modifications made according to the spirit of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. A stroller, comprising a frame with unfolded and folded states, a front wheel disposed in front of the bottom of the frame, and a rear wheel disposed behind the bottom of the frame; the frame includes at least two a side bracket assembly and a transverse bracket connected between the side bracket assemblies; it is characterized in that: The transverse support includes at least one transverse strut assembly, the transverse strut assembly includes two transverse struts with inner ends and outer ends respectively, and the inner ends of the two transverse struts are rotatably connected, and one of the transverse struts is rotatably connected. The outer end of the transverse strut is rotatably connected with one of the side bracket assemblies, and the outer end of the other transverse strut is rotatably connected with the other side bracket assembly; The cross brace assembly also includes an inner link for rotating the two cross brace rods closer to each other, and one end of the inner link and the side bracket assembly are slidably and rotatably connected to be able to move with each other. The side bracket assembly is unfolded or folded to move correspondingly, and the other end of the inner link is rotatably connected with the cross brace to drive the cross brace to rotate; When the frame is in the unfolded state, the two cross braces are unfolded relative to each other, and when the vehicle frame is in the folded state, the outer ends of the two cross braces are close to each other. 2 . The stroller according to claim 1 , wherein each of the side bracket assemblies comprises a front wheel bracket for arranging the front wheel and a rear wheel bracket for arranging the rear wheel, respectively. 3 . The cross bracket includes a first cross brace disposed between the front wheel braces of the two side brace assemblies and a second cross brace disposed between the rear wheel braces of the two side brace assemblies components. 3 . The stroller according to claim 2 , wherein the inner link of the first cross brace assembly is rotatably connected to a first sliding member, and the first sliding member is slidably arranged on the on the front wheel bracket; the inner link of the second cross brace assembly is rotatably connected to a second sliding piece, and the second sliding piece is slidably arranged on the rear wheel bracket. 4. The stroller according to claim 3, wherein each of the side bracket assemblies further comprises a device for driving the first sliding member and/or the The linkage assembly for the movement of the second slider. 5 . The stroller according to claim 4 , wherein the link assembly comprises a rear support rod for driving the second sliding member to move, and for connecting the first sliding member and the said first sliding member to move. 6 . The second sliding member is linked with the pull rod and the front strut, the rear end of the rear strut is rotatably connected to the second sliding member, and the front end of the rear strut is connected to the removal of the side bracket assembly. For other parts of the rear wheel bracket, the front end of the pull rod is rotatably connected to the front wheel support, the rear end of the pull rod is rotatably connected to the second sliding member, and the upper end of the front strut is rotatably connected to the front wheel support. The lower end portion of the front strut is rotatably connected to the first sliding member. 6 . The stroller of claim 5 , wherein the side bracket assembly further comprises an upper push rod, a lower push rod whose upper end is rotatably connected to the upper push rod, and a rotatable upper end of the push rod. 7 . The side struts connected to the lower end of the upper push rod, the lower end of the lower push rod, the upper end of the front wheel bracket and the upper end of the rear wheel bracket are connected relative to each other for rotation or coaxial rotation The lower end of the side stay is rotatably connected to the rear wheel bracket, and the front end of the rear stay is rotatably connected to the side stay or the push-down rod. 7. The stroller of claim 6, wherein the side bracket assembly further comprises a seat post, a rear end of the seat post is rotatably connected to the side stay, the seat post The front part of the bracket is slidably and rotatably connected to the lower push rod, and the cross bracket also includes a cross brace assembly connected between the seat posts. 8 . The stroller of claim 1 , wherein the end of the inner link is connected to the side bracket assembly through a sliding member, and the end of the inner link is rotatably connected to the side bracket assembly. 9 . The slider is slidably connected to the side bracket assembly. 9 . The stroller according to claim 1 , wherein the inner ends of the two transverse struts are pivotally connected to each other through a first pivot, and the outer ends of the transverse struts are connected through a second pivot. 10 . The shaft is rotatably connected to the side bracket assembly, one end of the inner link is rotatably connected to the side bracket assembly through a third pivot shaft, and the other end of the inner link is rotatably connected to the side bracket assembly through a fourth pivot shaft The transverse struts are rotatably connected, and the axis lines of the first pivot, each of the second pivots, each of the third pivots, and each of the fourth pivots in the same transverse strut assembly parallel to each other. 10 . The stroller according to claim 1 , wherein the lengths of the two cross braces of the same cross brace assembly are equal. 11 .