CN201784657U - Baby stroller - Google Patents

Abstract

A children's pushchair, the side bracket includes a first front wheel bracket, a first push handle rod slidably connected with the first push handle rod, a first rear rear wheel whose upper end is rotatably connected with the upper part of the first push handle rod The wheel bracket, the first rear seat post that is rotatably connected to the first rear wheel support at the rear end, the first front seat post that is rotatably connected to the first front wheel support, and the lower end that is rotatably connected to the first rear seat post The connected first rear link is slidably arranged on the first slider on the first rear wheel bracket along the length direction of the first rear wheel bracket, and the upper end of the first rear link is rotationally connected with the first slider , the first front seat post is rotationally connected with the first rear seat post. During the folding process, the first sliding member slides upwards, and the first rear seatpost is driven to rotate upwards relative to the first rear wheel bracket through the first rear connecting rod, and the first front seatpost is rotated upwards relative to the first front wheel bracket, and the first front wheel bracket Sliding upwards along the first push handle bar, the first front wheel support and the first rear wheel support move closer.

Description

stroller

technical field

The utility model relates to a children's stroller which can be used by children and can be pushed by adults behind.

Background technique

A stroller for children, comprising a stroller frame, a front wheel assembly arranged at the bottom front of the stroller frame, a rear wheel assembly arranged at the bottom rear of the stroller frame, and a rear wheel assembly arranged at the bottom of the stroller frame. The seat mechanism on the stroller frame, the locking mechanism that locks the stroller frame in the unfolded position. The stroller frame includes side brackets located on both sides, and a connecting bracket connected between the side brackets on both sides.

Usually, the cart frame can be unfolded or folded, that is, it has an unfolded position and a folded position. The unfolded position is for users to use, and the folded position has a smaller volume for convenient storage and transportation. Moreover, in the prior art, there are various folding structures and forms of the stroller frame.

Utility model content

The technical problem to be solved by the utility model is to provide a stroller for children.

In order to solve the above technical problems, a kind of technical scheme that the utility model adopts is:

A stroller for children, comprising a stroller frame with an unfolded position and a folded position, a front wheel assembly arranged at the bottom front of the stroller frame, a rear wheel assembly arranged at the bottom rear of the stroller frame The wheel assembly, the seat mechanism arranged on the cart frame, the locking mechanism for locking the cart frame in the unfolded position, the cart frame includes side brackets on both sides, The connecting frame connected between the side brackets on both sides, the side bracket on one side includes:

first front wheel bracket;

a first push handle rod, the upper part of the first front wheel bracket is slidably connected with the first push handle rod along the length direction of the first push handle rod;

a first rear wheel bracket, the upper end of the first rear wheel bracket is rotatably connected to the upper part of the first push handle bar;

a first rear seat post, the rear end of the first rear seat post is rotatably connected to the first rear wheel bracket;

a first front seat post, the first front seat post is rotatably connected to the first front wheel bracket, and the first front seat post is rotatably connected to the first rear seat post;

a first rear link, the lower end of the first rear link is rotatably connected to the first rear seat post;

The first slider, the first slider is slidably arranged on the first rear wheel bracket along the length direction of the first rear wheel bracket, and the upper end of the first rear link It is rotatably connected with the first sliding member.

In some embodiments, the side bracket on one side further includes a first front link located below the first front seat post, and the lower end of the first front link is connected to the first front link. The lower part of a front wheel bracket is rotatably connected, and the upper end of the first front link is rotatably connected with the first rear seat post. The rigidity of the front part of the cart frame is stronger.

In some embodiments, the side bracket on one side further includes a first upper seat post located above the first rear seat post, and the rear end of the first upper seat post is connected to the The first rear wheel bracket is rotatably connected, and the first upper seatpost is provided with a third slider slidably along its length direction, and the first rear link is rotatably connected with the third slider connect. A first seat mechanism can be arranged between the first front seatpost and the first rear seatpost, and a second seat mechanism can also be arranged on the first upper seatpost, thus, the stroller constitutes a double-seater stroller, When the cart frame is folded, driven by the first rear connecting rod and the third sliding member, the first upper seat post rotates and folds upwards around the rotating shaft at its rear end.

In some further embodiments, the first front seatpost is rotatably connected to the lower end of the first backrest bar, and the first backrest bar is provided with a fifth sliding member slidably along its length direction, so The fifth sliding member is rotatably connected to the front portion of the first upper seat post. The first backrest bar is added as the frame of the backrest. Under the cooperation of the fifth sliding member and the first upper seat post, it does not affect the first front wheel bracket to be retracted into the first push handle bar, and also makes the cart frame The front is more rigid.

In some embodiments, the side bracket on the other side includes

second front wheel bracket;

a second push handle rod, the upper part of the second front wheel bracket is slidably connected with the second push handle rod along the length direction of the second push handle rod;

a second rear wheel bracket, the upper end of the second rear wheel bracket is rotatably connected to the upper part of the second push handle bar;

a second rear seat post, the rear end of the second rear seat post is rotatably connected to the second rear wheel bracket;

a second front seat post, the second front seat post is rotatably connected to the second front wheel bracket, and the second front seat post is rotatably connected to the second rear seat post;

a second rear link, the lower end of the second rear link is rotatably connected to the second rear seat post;

The second sliding member, the second sliding member is slidably arranged on the second rear wheel support along the length direction of the second rear wheel support, and the upper end of the second rear link is rotationally connected with the second slider,

The connecting frame includes

A horizontally foldable bottom bracket, the bottom bracket is arranged between the first front seat post, the second front seat post, the first rear seat post, and the second rear seat post between, or the bottom bracket is arranged between the first front seat post, the second front seat post, the first rear wheel bracket, and the second rear wheel bracket;

A rear support that can be folded laterally, the rear support is arranged between the first rear wheel support and the second rear wheel support or is arranged on the first rear wheel support, the between the second rear wheel bracket, the first sliding member, and the second sliding member. Due to the effect of the bottom support frame and the rear support frame, the laterally folded stroller whose lateral size can also be reduced is formed.

In some further embodiments, the side bracket on one side further includes a first front link located below the first front seatpost, the lower end of the first front link is connected to the The lower part of the first front wheel bracket is rotatably connected, the upper end of the first front link is rotatably connected with the first rear seat post, and the side bracket on the other side also includes a The second front link below the second front seatpost, the lower end of the second front link is rotationally connected to the lower part of the second front wheel bracket, and the second front link The upper end of the upper end is rotatably connected with the second rear seat post.

In some still further embodiments, the bottom brace includes a first bottom brace, a second bottom brace that intersects with the first bottom brace and is rotatably connected at the intersection, so The front end of the first bottom stay and the first front seat post are arranged to rotate through a first rotating joint, and the rear end of the first bottom stay and the second rear seat post pass through The fourth rotation joint is arranged to rotate, the front end of the second bottom brace and the second front seat post are arranged to rotate through the second rotation joint, the rear end of the second bottom brace It is arranged to be rotatable with the first rear seat post through the third rotary joint.

In some still further embodiments, the side bracket on one side further includes a first upper seat post located above the first rear seat post, and the rear end of the first upper seat post Rotately connected with the first rear wheel bracket, the first upper seat post is provided with a third sliding member slidingly along its length direction, the first rear connecting rod and the third sliding parts are rotatably connected, and the side bracket on the other side also includes a second upper seat post located above the second rear seat post, and the rear end of the second upper seat post is connected to the The second rear wheel bracket is rotatably connected, and the second upper seat post is provided with a fourth sliding member slidably along its length direction, and the second rear connecting rod is rotatably arranged with the fourth sliding member connect.

In certain further embodiments, the first front seatpost is rotatably connected to the lower end of the first backrest bar, and the first backrest bar is provided with a fifth sliding member slidably along its length direction, The fifth sliding member is rotatably connected to the front part of the first upper seatpost, the lower end of the second backrest rod is rotatably connected to the second front seatpost, and the second backrest rod A sixth sliding member is slidably arranged along its length direction, and the sixth sliding member is rotatably connected with the front part of the second upper seatpost.

In some still further embodiments, the first front wheel bracket is provided with a first blocking portion, and the second front wheel bracket is provided with a second blocking portion, when the cart When the frame is in the unfolded position, the front portion of the first rear seat post presses against the second blocking portion, and the front portion of the second rear seat post presses against the second blocking portion. Through the first blocking part and the second blocking part, the rigidity of the front part of the stroller frame is stronger.

The orientation words such as up, down, front, and back mentioned above are defined when the cart frame is in the unfolded position, the position of the front wheel assembly is front-down, and the position of the rear wheel assembly is back-down .

The scope of the present utility model is not limited to technical solutions formed by a specific combination of the above technical features, but also covers other technical solutions formed by any combination of the above technical features or equivalent features. For example, technical solutions formed by replacing the above-mentioned features with (but not limited to) technical features with similar functions disclosed in this application.

Due to the application of the above-mentioned technical solutions, the utility model has the following advantages compared with the prior art:

During the transition of the stroller frame from the unfolded position to the folded position, the first sliding member slides upward along the length direction of the first rear wheel bracket, and drives the first rear wheel bracket through the first rear link. The rear seat post rotates upward relative to the first rear wheel support and closes to the first rear wheel support, and the first front seat post rotates upward relative to the first front wheel support and closes to the first front wheel support move closer together, and the first front wheel bracket slides upward along the first push handle bar, the first rear seat post moves closer to the first front seat post, and the first front wheel When the bracket is close to the first rear wheel bracket, the cart frame is folded, and the folded volume is small.

Description of drawings

Accompanying drawing 1 is the perspective view of the present utility model (embodiment two, cart frame is under the expanded position);

Accompanying drawing 2 is the front view of the utility model (embodiment two, the cart frame is under the expanded position);

Accompanying drawing 3 is the three-dimensional view of the present utility model (embodiment 2, cart frame is in the conversion process of expanded position and folded position);

Accompanying drawing 4 is the front view of the present utility model (embodiment 2, cart frame is in the conversion process of expanded position and folded position);

Accompanying drawing 5 is the front view of the utility model (embodiment 2, the cart frame is under the folded position);

Accompanying drawing 6 is the front view of the utility model (embodiment 1, the cart frame is under the deployed position).

Among them: 1. Cart frame; 11. The first front wheel bracket; 12. The first push handle bar; 13. The first rear wheel bracket; 14. The first rear seat post; 15. The first front seat post; 16. The first rear link; 17, the first sliding member; 18, the first front link; 19, the first upper seat post; 21, the second front wheel support; 22, the second push bar; 23, the second rear wheel Bracket; 24, second rear seat post; 25, second front seat post; 26, second rear link; 27, second slider; 28, second front link; 29, second upper seat post; 31, bottom Bracket; 32, rear brace; 33, first bottom brace; 34, second bottom brace; 35, first revolving joint; 36, second revolving joint; 37, third revolving joint; 38, fourth 41, the third sliding member; 42, the fourth sliding member; 43, the first backrest bar; 44, the second backrest bar; 45, the fifth sliding member; 46, the sixth sliding member.

Detailed ways

Embodiment 1: As shown in Figure 6, a stroller for children includes a stroller frame 1 having an unfolded position and a folded position, a front wheel assembly arranged at the bottom front of the stroller frame 1, a set the rear wheel assembly at the bottom rear of the cart frame 1, the seat mechanism arranged on the cart frame 1, and the locking mechanism for locking the cart frame 1 in the unfolded position, The cart frame 1 includes side brackets located on both sides, a connecting frame connected between the side brackets on both sides, and the connecting frame is a plurality of wires connected between the side brackets on both sides. The horizontal link and the cart frame cannot be folded horizontally.

Said side brackets on each side include:

The first front wheel bracket 11, the bottom of the first front wheel bracket 11 is provided with a front wheel assembly;

The first push handle bar 12, the upper part of the first front wheel bracket 11 is slidably connected with the first push handle bar 12 along the length direction of the first push handle bar 12;

The first rear wheel bracket 13, the upper end of the first rear wheel bracket 13 is rotationally connected with the upper part of the first push handle bar 12, and the bottom of the first rear wheel bracket 13 is provided with a rear wheel assembly;

A first rear seat post 14, the rear end of the first rear seat post 14 is rotatably connected to the first rear wheel bracket 13;

The first front seat post 15, the first front seat post 15 is rotatably connected with the first front wheel bracket 11, the first front seat post 15 is rotatably connected with the first rear seat post 14 connect;

A first rear link 16, the lower end of the first rear link 16 is rotatably connected to the first rear seat post 14;

The first sliding member 17, the first sliding member 17 is slidably arranged on the first rear wheel support 13 along the length direction of the first rear wheel support 13, and the first rear connection The upper end of the rod 16 is rotatably connected with the first sliding member 17 .

The described side support of each side part also comprises the first front connecting rod 18 that is positioned at described first front seat post 15 below, and the lower end of described first front connecting rod 18 is connected with described first front wheel support. 11 is rotatably connected to the lower part, and the upper end of the first front connecting rod 18 is rotatably connected to the first rear seat post 14 .

The side brackets of each side portion also include a first upper seat post 19 above the first rear seat post 14, and the rear end of the first upper seat post 19 is connected to the first rear wheel. The bracket 13 is rotatably connected, and the first upper seat post 19 is provided with a third sliding member 41 slidably along its length direction, and the first rear link 16 is rotated with the third sliding member 41 ground connection.

The first front seatpost 15 is rotatably connected with the lower end of the first backrest rod 43, and the first backrest rod 43 is provided with a fifth sliding member 45 slidingly along its length direction. The sliding member 45 is rotatably connected with the front portion of the first upper seat post 19 .

The seat mechanism includes a first seat mechanism and a second seat mechanism, the first seat mechanism is arranged between the first front seatposts 15 on both sides, and the second seat mechanism is arranged on the first upper seatpost 19 on both sides, thereby forming a A children's tandem carriage for two children.

The first front wheel bracket 11 has a first blocking portion 20, when the cart frame 1 is in the unfolded position, the front end of the first rear seat post 14 is pressed against the first On the blocking part 20. It is also possible not to have the first stop 20 . The locking mechanism is not a utility model point of the present invention. For example, it can be arranged between the first sliding member 17 and the first rear wheel bracket 13 to restrict the relative sliding of the two.

Embodiment 2, as shown in accompanying drawings 1 to 5, the difference between embodiment 2 and embodiment 1 is that embodiment 1 is a children's stroller that cannot be folded horizontally, while embodiment 2 is a children's stroller that can also be folded horizontally car.

The side bracket of one side includes:

The first front wheel bracket 11, the bottom of the first front wheel bracket 11 is provided with a front wheel assembly;

The first push handle bar 12, the upper part of the first front wheel bracket 11 is slidably connected with the first push handle bar 12 along the length direction of the first push handle bar 12;

The first rear wheel bracket 13, the upper end of the first rear wheel bracket 13 is rotationally connected with the upper part of the first push handle bar 12, and the bottom of the first rear wheel bracket 13 is provided with a rear wheel assembly;

A first rear seat post 14, the rear end of the first rear seat post 14 is rotatably connected to the first rear wheel bracket 13;

The first front seat post 15, the first front seat post 15 is rotatably connected with the first front wheel bracket 11, the first front seat post 15 is rotatably connected with the first rear seat post 14 connect;

A first rear link 16, the lower end of the first rear link 16 is rotatably connected to the first rear seat post 14;

The first sliding member 17, the first sliding member 17 is slidably arranged on the first rear wheel support 13 along the length direction of the first rear wheel support 13, and the first rear connection The upper end of the rod 16 is rotatably connected with the first sliding member 17 .

The side bracket on the other side includes

The second front wheel bracket 21, the bottom of the second front wheel bracket 21 is provided with a front wheel assembly;

The second push handle bar 22, the upper part of the second front wheel bracket 21 is slidably connected with the second push handle bar 22 along the length direction of the second push handle bar 22;

The second rear wheel bracket 23, the upper end of the second rear wheel bracket 23 is rotationally connected with the upper part of the second push handle bar 22, and the second rear wheel bracket 23 bottom is provided with a rear wheel assembly;

A second rear seat post 24, the rear end of the second rear seat post 24 is rotatably connected to the second rear wheel bracket 23;

The second front seat post 25, the second front seat post 25 is rotatably connected with the second front wheel bracket 21, the second front seat post 25 is rotatably connected with the second rear seat post 24 connect;

A second rear link 26, the lower end of the second rear link 26 is rotatably connected to the second rear seat post 24;

The second sliding member 27, the second sliding member 27 is slidably arranged on the second rear wheel support 23 along the length direction of the second rear wheel support 23, and the second rear connection The upper end of the rod 26 is rotatably connected with the second slider 27 .

Said side support on one side also includes a first front link 18 positioned below said first front seat post 15, the lower end of said first front link 18 is connected to said first front wheel bracket The lower part of 11 is rotationally connected, and the upper end of the first front link 18 is rotationally connected with the first rear seat post 14; the side bracket on the other side also includes a The second front link 28 below the second front seat post 25, the lower end of the second front link 28 is rotationally connected with the bottom of the second front wheel bracket 21, the second front The upper end of the connecting rod 28 is rotatably connected to the second rear seat post 24 .

Said side support at one side also includes a first upper seat post 19 above said first rear seat post 14, the rear end of said first upper seat post 19 is connected to said first rear wheel The bracket 13 is rotatably connected, and the first upper seat post 19 is provided with a third sliding member 41 slidably along its length direction, and the first rear link 16 is rotated with the third sliding member 41 ground connection. The side bracket on the other side also includes a second upper seat post 29 above the second rear seat post 24, and the rear end of the second upper seat post 29 is connected to the second rear seat post. The wheel bracket 23 is rotatably connected, and the second upper seat post 29 is provided with a fourth sliding member 42 slidably along its length direction, and the second rear connecting rod 26 is connected to the fourth sliding member 42. rotationally connected.

The first front seatpost 15 is rotatably connected with the lower end of the first backrest rod 43, and the first backrest rod 43 is provided with a fifth sliding member 45 slidingly along its length direction. The sliding part 45 is rotatably connected with the front part of the first upper seatpost 19, and the lower end of the second backrest rod 44 is rotatably connected with the second front seatpost 25, and the second backrest rod 44 is A sixth sliding member 46 is slidably arranged along its length direction, and the sixth sliding member 46 is rotatably connected with the front part of the second upper seat post 29 .

The first front wheel bracket 11 is provided with a first blocking portion, and the second front wheel bracket 21 is provided with a second blocking portion, when the cart frame 1 is in the unfolded position, the The front portion of the first rear seat post 14 is pressed on the second blocking portion, and the front portion of the second rear seat post 24 is pressed on the second blocking portion.

The connecting frame includes

The bottom bracket 31 that can be folded horizontally, the bottom bracket 31 is arranged on the first front seatpost 15, the second front seatpost 25, the first rear seatpost 14, the second seatpost Between the two rear seat posts 24, or the bottom bracket 31 is arranged on the first front seat post 15, the second front seat post 25, the first rear wheel bracket 13, the second Between the two rear wheel brackets 23;

As shown in accompanying drawings 1 and 3, the bottom bracket 31 includes a first bottom brace 33, a second bottom that intersects with the first bottom brace 33 and is rotatably connected at the intersection. The strut 34, the front end of the first bottom strut 33 and the first front seat post 15 are rotatably arranged through the first rotating joint 35, the rear end of the first bottom strut 33 is connected to the The second rear seat post 24 is rotatably arranged through the fourth rotary joint 38 , and the front end of the second bottom brace 34 is rotatably connected to the second front seat post 25 via the second rotary joint 36 . It is provided that the rear end of the second bottom brace 34 is rotatably set with the first rear seat post 14 through the third rotary joint 37 .

A rear support frame 32 that can be folded laterally, the rear support frame 32 is arranged between the first rear wheel support 13 and the second rear wheel support 23 or is arranged on the first rear wheel support 13. Between the second rear wheel bracket 23 , the first sliding member 17 , and the second sliding member 27 .

A rear support frame 32 capable of being folded laterally, the rear support frame 32 is arranged between the first rear wheel support 13 and the second rear wheel support 23 . As shown in accompanying drawing 1, accompanying drawing 3, the structure of described back brace 32 can be to comprise:

vertical pole;

The first crossbar, one end of the first crossbar is rotatably connected with the upper end of the vertical bar, and the other end of the first crossbar is rotatably connected with the first rear wheel bracket 13 connect;

The second crossbar, one end of the second crossbar is rotatably connected with the upper end of the vertical bar, and the other end of the second crossbar is rotatable with the second rear wheel bracket 23 connect;

a slider, the slider is slidably arranged on the vertical bar;

The third cross bar, one end of the third cross bar is rotatably connected with the lower end of the vertical bar, and the other end of the third cross bar is rotatable with the first rear wheel bracket 13 connect;

A fourth crossbar, one end of the fourth crossbar is rotatably connected to the lower end of the vertical bar, and the other end of the fourth crossbar is rotatably connected to the second rear wheel bracket 23 connect.

A first slanting rod, one end of the first slanting rod is rotatably connected to the slider, and the other end of the first slanting rod is rotatably connected to the third cross bar;

As for the second slanting rod, one end of the second slanting rod is rotatably connected to the slider, and the other end of the second slanting rod is rotatably connected to the fourth cross bar.

The structure of the rear support frame 32 may also be: not shown, the structure of the rear support frame 32 may also include a first rear support rod, intersect with the first rear support rod and rotate at the intersection The second rear strut that is arranged on the ground, the upper end of the first rear strut and the first slider 17 are set in a rotatable manner, the lower end of the first rear strut and the first The two rear wheel brackets 23 are rotatably set; the upper end of the second rear strut is set rotatably with the second slider 27, and the lower end of the second rear strut is rotatably with the second The first rear wheel support 13 is arranged to be rotatable, the first sliding member 17 is arranged to slide along its length direction on the first rear wheel support 13, and the first sliding member 17 is arranged on the second rear wheel support 23 to slide along its length direction. A second sliding member 27 is arranged on the ground.

During the transformation of the cart frame from the unfolded position to the folded position, when the cart frame 1 is in the unfolded position, first unlock the locking mechanism, and then pull the first sliding member 17 and the second sliding member 27, make them slide upward relative to the corresponding first rear wheel bracket 13 and the second rear wheel bracket 23 respectively, through the first rear link 16 and the second rear link 26 on the one hand The third sliding member 41 is driven to slide relative to the first upper seatpost 19, and the fourth sliding member 42 slides relative to the second upper seatpost 29, the first upper seatpost 19 is moved closer to the first rear wheel bracket 13, and the second The upper seat post 29 is close to the second rear wheel support 23; on the other hand, it drives the first rear seat post 14 and the second rear seat post 24 relative to the corresponding first rear wheel support 13 and the first rear wheel support 13. Two rear wheel brackets 23 rotate upwards; and move closer to corresponding first rear wheel brackets 13 and second rear wheel brackets 23; the rear portion of the first front seat post 15 is upward relative to the first front wheel brackets 11 Rotate and move closer to the first front wheel bracket 11, the rear portion of the second front seat post 25 rotates upward relative to the second front wheel bracket 21 and moves closer to the second front wheel bracket 21, the second front wheel bracket 21 moves closer. A front wheel support 11 slides upwards along the first push handle bar 12, the second front wheel support 21 slides upwards along the second push handle bar 22, and the first rear seat post 14 is close to the first front seatpost 15, the second rear seatpost 24 is close to the second front seatpost 25, the first front wheel bracket 11 is close to the first rear The wheel brackets 13 are close together, and the second front wheel bracket 21 is close to the second rear wheel bracket 23,

Under the action of the fifth sliding member 45 and the sixth sliding member 46, the first backrest bar 43 is close to the first push handle bar 12, and the second backrest bar 44 is close to the second push handle bar 22. move closer.

As mentioned above, we have fully described according to the purpose of the utility model, but the utility model is not limited to the above-mentioned embodiment and implementation method. Practitioners in the relevant technical fields can make different changes and implementations within the scope permitted by the technical ideas of the present utility model.

Claims (10)

1. children trolley, comprise go-cart vehicle frame (1), the front component that is arranged at described go-cart vehicle frame (1) front portion, the end, the wheel assembly that is arranged at described go-cart vehicle frame (1) rear portion, the end, be arranged at seat mechanism on the described go-cart vehicle frame (1), described go-cart vehicle frame (1) is locked in lockout mechanism under the expanded position with expanded position and folding position, described go-cart vehicle frame (1) comprises side stand in both sides, be connected in the link span between the described side stand of both sides, and it is characterized in that: the described side stand of a sidepiece comprises:

First front-wheel support (11);

First pulling handle rod (12), the top of described first front-wheel support (11) is slidingly connected along the length direction and described first pulling handle rod (12) of described first pulling handle rod (12);

First rear wheel support (13), the upper end of described first rear wheel support (13) is connected rotatedly with the top of described first pulling handle rod (12);

The first back seat bar (14), the rearward end of the described first back seat bar (14) is connected rotatedly with described first rear wheel support (13);

The first front stall bar (15), the described first front stall bar (15) is connected rotatedly with described first front-wheel support (11), and the described first front stall bar (15) is connected rotatedly with the described first back seat bar (14);

First rear linking rod (16), the bottom of described first rear linking rod (16) is connected rotatedly with the described first back seat bar (14);

First sliding part (17), described first sliding part (17) is arranged on described first rear wheel support (13) slidably along the length direction of described first rear wheel support (13), and the upper end of described first rear linking rod (16) is connected rotatedly with described first sliding part (17).

2. children trolley according to claim 1, it is characterized in that: the described side stand of a sidepiece also comprises first front rod (18) that is positioned at the described first front stall bar (15) below, the bottom of described first front rod (18) is connected rotatedly with the bottom of described first front-wheel support (11), and the upper end of described first front rod (18) is connected rotatedly with the described first back seat bar (14).

3. children trolley according to claim 1, it is characterized in that: the described side stand of a sidepiece also comprises first seat of honour bar (19) of the top that is positioned at the described first back seat bar (14), the rearward end of described first seat of honour bar (19) is connected rotatedly with described first rear wheel support (13), described first its length direction of seat of honour bar (19) upper edge is provided with the 3rd sliding part (41) slidably, and described first rear linking rod (16) is connected rotatedly with described the 3rd sliding part (41).

4. children trolley according to claim 3, it is characterized in that: the bottom that is connected with first back support bar (43) on the described first front stall bar (15) rotationally, its length direction of described first back support bar (43) upper edge is provided with the 5th sliding part (45) slidably, and described the 5th sliding part (45) is connected rotatedly with the front portion of described first seat of honour bar (19).

5. children trolley according to claim 1 is characterized in that: the side stand of opposite side comprises

Second front-wheel support (21);

Second pulling handle rod (22), the top of described second front-wheel support (21) is slidingly connected along the length direction and described second pulling handle rod (22) of described second pulling handle rod (22);

Second rear wheel support (23), the upper end of described second rear wheel support (23) is connected rotatedly with the top of described second pulling handle rod (22);

The second back seat bar (24), the rearward end of the described second back seat bar (24) is connected rotatedly with described second rear wheel support (23);

The second front stall bar (25), the described second front stall bar (25) is connected rotatedly with described second front-wheel support (21), and the described second front stall bar (25) is connected rotatedly with the described second back seat bar (24);

Second rear linking rod (26), the bottom of described second rear linking rod (26) is connected rotatedly with the described second back seat bar (24);

Second sliding part (27), described second sliding part (27) is arranged on described second rear wheel support (23) slidably along the length direction of described second rear wheel support (23), the upper end of described second rear linking rod (26) is connected rotatedly with described second sliding part (27)

Described link span comprises

Bottom bracing frame (31) that can be laterally folded, described bottom bracing frame (31) is arranged between the described first front stall bar (15), the described second front stall bar (25), the described first back seat bar (14), the described second back seat bar (24), and perhaps described bottom bracing frame (31) is arranged between the described first front stall bar (15), the described second front stall bar (25), described first rear wheel support (13), described second rear wheel support (23);

Back pole-bracket that can be laterally folded (32), described back pole-bracket (32) are arranged between described first rear wheel support (13) and described second rear wheel support (23) or are arranged between described first rear wheel support (13), described second rear wheel support (23), described first sliding part (17), described second sliding part (27).

6. children trolley according to claim 5, it is characterized in that: the described side stand of a sidepiece also comprises first front rod (18) that is positioned at the described first front stall bar (15) below, the bottom of described first front rod (18) is connected rotatedly with the bottom of described first front-wheel support (11), the upper end of described first front rod (18) is connected rotatedly with the described first back seat bar (14), the described side stand of the other side also comprises second front rod (28) that is positioned at the described second front stall bar (25) below, the bottom of described second front rod (28) is connected rotatedly with the bottom of described second front-wheel support (21), and the upper end of described second front rod (28) is connected rotatedly with the described second back seat bar (24).

7. children trolley according to claim 5, it is characterized in that: described bottom bracing frame (31) comprises first bottom supporting rod (33), intersect with described first bottom supporting rod (33) and at infall bonded assembly second bottom supporting rod (34) rotatedly, the leading section of described first bottom supporting rod (33) and the described first front stall bar (15) are provided with rotatedly by first rotary joint (35), the rearward end of described first bottom supporting rod (33) and the described second back seat bar (24) are provided with rotatedly by the 4th rotary joint (38), the leading section of described second bottom supporting rod (34) and the described second front stall bar (25) are provided with rotatedly by second rotary joint (36), and the rearward end of described second bottom supporting rod (34) and the described first back seat bar (14) are provided with rotatedly by the 3rd rotary joint (37).

8. children trolley according to claim 5, it is characterized in that: the described side stand of a sidepiece also comprises first seat of honour bar (19) of the top that is positioned at the described first back seat bar (14), the rearward end of described first seat of honour bar (19) is connected rotatedly with described first rear wheel support (13), described first its length direction of seat of honour bar (19) upper edge is provided with the 3rd sliding part (41) slidably, described first rear linking rod (16) is connected rotatedly with described the 3rd sliding part (41), the described side stand of the other side also comprises second seat of honour bar (29) of the top that is positioned at the described second back seat bar (24), the rearward end of described second seat of honour bar (29) is connected rotatedly with described second rear wheel support (23), described second its length direction of seat of honour bar (29) upper edge is provided with the 4th sliding part (42) slidably, and described second rear linking rod (26) is connected rotatedly with described the 4th sliding part (42).

9. children trolley according to claim 8, it is characterized in that: the bottom that is connected with first back support bar (43) on the described first front stall bar (15) rotationally, its length direction of described first back support bar (43) upper edge is provided with the 5th sliding part (45) slidably, described the 5th sliding part (45) is connected rotatedly with the front portion of described first seat of honour bar (19), be connected with the bottom of second back support bar (44) on the described second front stall bar (25) rotationally, its length direction of described second back support bar (44) upper edge is provided with the 6th sliding part (46) slidably, and described the 6th sliding part (46) is connected rotatedly with the front portion of described second seat of honour bar (29).

10. children trolley according to claim 5, it is characterized in that: described first front-wheel support (11) is provided with first stop part, described second front-wheel support (21) is provided with second stop part, when described go-cart vehicle frame (1) is positioned under the expanded position, the front portion of the described first back seat bar (14) is pressed on described second stop part, and the front portion of the described second back seat bar (24) is pressed on described second stop part.

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