CN105599800B - A kind of children trolley - Google Patents

Abstract

The invention discloses a stroller for children, which comprises a stroller frame, a front wheel assembly arranged at the front bottom of the stroller frame, and a rear wheel assembly at the rear bottom of the stroller frame, and is used for locking the stroller frame in an unfolded state. The first lock mechanism, the seat component detachably grafted on the stroller frame, when the seat component is grafted on the stroller frame, the children’s stroller can be folded, the stroller frame includes the first side bar, the seat The seat pocket assembly is slidably arranged on the first side bar in a direction close to or away from the first side bar. When the stroller is folded, the seat pocket assembly slides in a direction close to the first side bar until the two are close together. When the stroller frame is unfolded, the seat pocket assembly slides in a direction away from the first side bar. The baby stroller has a simple structure, the seat assembly can be grafted on the stroller frame and folded together with the stroller frame, and when folded, the seat assembly can slide in a direction close to the first side bar and move closer to the first side bar, thereby making The folded stroller has a compact structure and a small volume.

Description

a stroller for children

technical field

The invention relates to the technical field of children's products, in particular to a baby stroller.

Background technique

The children's stroller in the prior art includes a stroller frame with an unfolded position and a folded position, a front wheel assembly and a rear wheel assembly arranged at the bottom of the stroller frame for locking the stroller frame in the unfolded state The locking mechanism, the seat assembly that can be detachably grafted on the cart frame. In order to facilitate the packaging, transportation and storage of children's strollers, generally children's strollers can be folded. The assembly is folded together with the stroller, and when the seat assembly is folded together with the stroller, the distance between the seat assembly and the frame of the stroller remains the same as when the stroller is unfolded, so that the folded child The cart has a larger volume.

Contents of the invention

The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, and provide a child stroller which is convenient to fold and unfold and has a smaller volume after folding.

In order to achieve the above object, the technical scheme adopted in the present invention is:

A stroller for children, comprising a stroller frame with an expanded state and a folded state, a front wheel assembly arranged at the bottom front part of the stroller frame, a rear wheel assembly arranged at the bottom rear part of the stroller frame A wheel assembly, a first lock mechanism for locking the cart frame in an unfolded state, a seat pocket assembly detachably grafted on the cart frame, when the seat pocket assembly is grafted on the cart frame When the stroller is on the stroller frame, the stroller can be folded, the stroller frame includes a first side bar, and the seat pocket assembly can be slidably arranged in a direction close to or away from the first side bar. On the first side bar, when the stroller is folded, the seat pocket assembly slides toward the direction close to the first side bar so that the distance between the seat pocket assembly and the first side bar decrease, when the stroller frame is unfolded from the folded state, the seat pocket assembly slides away from the first side bar so that the distance between the seat pocket assembly and the first side bar Gradually increase.

Preferably, the stroller frame further includes a second side bar that is rotatably connected to the first side bar, and when the stroller frame is folded, the first side bar flips over and connects with the second side bar. Getting closer drives the seat bag assembly to slide towards the direction close to the first side bar. When the stroller frame is unfolded, the first side bar flips away from the second side bar and drives the seat bag assembly away from the second side bar. slide in the direction of the first side lever.

Further, the stroller also includes a driving mechanism that drives the seat bag assembly to slide toward or away from the first side rod when the first side rod is overturned, and the driving mechanism includes a The first driver on the two side rods, the second driver matched with the first driver, and the second driver matched with the second driver can be slidably arranged in a direction approaching or away from the first side rod The slider on the first side bar, the second driving member can be rotatably arranged on the first side bar, the seat bag assembly can be detachably arranged on the slider, when the When the first side bar is reversed relative to the second side bar, the cooperation between the first drive part and the second drive part drives the second drive part to rotate, and the second drive part and the second drive part The cooperation of the slider drives the slider to slide towards or away from the first side bar.

Furthermore, the first driving member includes a first gear fixedly arranged on the second side bar, the second driving member includes a second gear meshing with the first gear, and a second gear meshing with the first gear. The third gear is fixedly connected to the two gears, the slider includes a rack, and the rack is meshed with the third gear. When the first side bar is turned over relative to the second side bar, the The meshing of the first gear with the second gear, and the meshing of the third gear with the rack drive the sliding block to slide towards or away from the first side bar.

Furthermore, a fixing seat is fixed on the first side bar, and a sliding groove is arranged on the fixing seat, and the sliding block is arranged in the sliding groove so as to be slidable along the extending direction of the sliding groove.

Furthermore, the first side rod is rotatably connected to the second side rod through a first shaft, the second drive member is rotatably connected to the first side rod through a second shaft, and the first The axis is arranged parallel to the second axis.

Further, the second side bar is used to install the rear wheel assembly, the lower part of the first side bar is rotatably connected to the upper part of the second side bar, and the cart frame further includes:

the front bracket is used to install the front wheel assembly, the upper part of the front bracket is rotatably connected with the upper part of the second side bar;

an upper push rod, the lower part of the upper push rod is rotatably connected to the upper part of the first side rod;

a first connecting rod, one end of the first connecting rod is rotatably connected to the upper push rod, and the other end of the first connecting rod is rotatably connected to the second side rod;

A second link, one end of the second link is rotatably connected to the front bracket, and the other end of the second link is rotatably connected to the other end of the first link.

Furthermore, the seat assembly includes an upper frame and a lower frame that are rotatably connected, and when the seat assembly is grafted on the stroller frame and the stroller is folded, the lower frame Flip up and get closer to the upper frame, and flip down the first side bar to get closer to the second side bar so that the folded seat pocket assembly slides in a direction close to the first side bar and aligns with the first side bar. The first side bars are moved closer together.

Further, the first side bar is used to install the front wheel assembly, the second side bar is used to install the rear wheel assembly, the upper part of the first side bar is connected to the upper part of the second side bar Relatively rotatably connected, the cart frame also includes:

Push up the rod;

a lower push rod, the lower part of the upper push rod is rotatably connected to the upper part of the lower push rod, and the lower part of the lower push rod is rotatably connected to the upper part of the second side rod;

a first connecting rod, one end of the first connecting rod is rotatably connected to the upper push rod, and the other end of the first connecting rod is rotatably connected to the second side rod;

A second link, one end of the second link is rotatably connected to the front bracket, and the other end of the second link is rotatably connected to the other end of the first link.

Furthermore, the seat assembly includes an upper frame and a lower frame that are rotatably connected, and when the seat assembly is grafted on the stroller frame and the stroller is folded, the upper frame Flip down to get closer to the lower frame, and turn the first side bar backwards to get closer to the second side bar so that the folded seat pocket assembly slides in a direction close to the first side bar and aligns with the first side bar. The first side bars are moved closer together.

Further, the first side bar is used to install the rear wheel assembly, the second side bar is used to install the front wheel assembly, the upper part of the first side bar is connected to the upper part of the second side bar Relatively rotatably connected, the cart frame also includes:

Push up the rod;

a lower push rod, the lower part of the upper push rod is rotatably connected to the upper part of the lower push rod, and the lower part of the lower push rod is rotatably connected to the upper part of the first side rod;

a first connecting rod, one end of the first connecting rod is rotatably connected to the upper push rod, and the other end of the first connecting rod is rotatably connected to the first side rod;

a second link, one end of the second link is rotatably connected to the second side bar, and the other end of the second link is rotatably connected to the other end of the first link; or

The first side bar is used to install the rear wheel assembly, the upper part of the first side bar is rotatably connected to the lower part of the second side bar, and the cart frame further includes:

the front bracket is used to install the front wheel assembly, the upper part of the front bracket is rotatably connected with the upper part of the first side bar;

an upper push rod, the lower part of the upper push rod is rotatably connected to the upper part of the second side rod;

a first connecting rod, one end of the first connecting rod is rotatably connected to the upper push rod, and the other end of the first connecting rod is rotatably connected to the first side rod;

A second link, one end of the second link is rotatably connected to the front bracket, and the other end of the second link is rotatably connected to the other end of the first link.

Preferably, the seat pocket assembly is arranged on the first side bar so as to slide up and down, and when the stroller is folded, the seat pocket assembly slides down close to the first side bar. When the stroller is unfolded, the seat assembly slides upwards away from the first side bar.

Preferably, the baby stroller further includes a lever or a handle for pulling the stroller frame upwards when the baby stroller is folded so that the rods that make up the stroller frame can be folded closer to each other. carrying belt.

Further, when the carrying rod or the carrying strap is pulled upwards, the first lock mechanism can be driven to be unlocked.

Due to the application of the above-mentioned technical scheme, the present invention has the following advantages compared with the prior art: the structure of the children's stroller of the present invention is simple, the seat pocket assembly can be grafted on the stroller frame and folded together with the stroller frame, and the seat can be folded when folded. The pocket component can slide towards the direction close to the first side bar and close to the first side bar, so that the folded baby stroller has a compact structure and a small volume, which is convenient for packaging, transportation and storage.

Description of drawings

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

Accompanying drawing 2 is the side view (embodiment 1) of the children's stroller in the unfolded state of the present invention;

Accompanying drawing 3 is the exploded view of place A in accompanying drawing 2 (embodiment 1);

Accompanying drawing 4 is a partial cross-sectional view of A place in accompanying drawing 2 (embodiment 1, enlarged view);

Accompanying drawing 5 is the three-dimensional view (embodiment 1) of the children's stroller of the present invention in a half-folded state;

Accompanying drawing 6 is the side view of the children's stroller of the present invention in a half-folded state (embodiment 1);

Accompanying drawing 7 is the three-dimensional view (embodiment 1) of the children's stroller in the folded state of the present invention;

Accompanying drawing 8 is the side view of the children's stroller of the present invention in a folded state (embodiment 1).

Among them: 1. Cart frame; 11. Front support; 12. Rear support; 121. Rear support rod; 122. First connector; 13. Upper push rod; 14. Lower push rod; 15. First connecting rod ;16, the second connecting rod; 21, the first shaft; 22, the second shaft; 23, the third shaft; 24, the fourth shaft; 25, the fifth shaft; 26, the sixth shaft; 3, the seat assembly; 31. Upper frame; 32. Lower frame; 33. Second connector; 4. Driving mechanism; 41. First driver; 42. Second driver; 421. Second gear; 422. Third gear; 43, slider; 431, rack; 44, fixed seat; 441, chute; 5, carrying rod or strap; 6, front wheel assembly; 7, rear wheel assembly.

Detailed ways

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

Referring to the children's stroller shown in Figures 1 to 8, the children's stroller includes a stroller frame 1 in unfolded and folded states, a front wheel assembly 6 arranged at the bottom front of the stroller frame 1, a front wheel assembly 6 arranged on the pushchair The rear wheel assembly 7 at the bottom rear of the cart frame 1, the first lock mechanism for locking the cart frame 1 in the unfolded state, and the seat pocket assembly 3 that can be detachably grafted on the cart frame 1 .

The seat assembly 3 includes a seat body with an unfolded state and a folded state. The seat body includes an upper frame 31 and a lower frame 32 that are rotatably connected, and are used to lock the positions of the upper frame 31 and the lower frame 32 at The second locking mechanism in the unfolded state. The stroller can also be folded when the seat pocket assembly 3 is grafted on the stroller frame 1, the stroller frame 1 includes at least a first side bar, and the seat pocket assembly 3 can slide towards or away from the first side bar. It is arranged on the first side bar, so that when the stroller is folded, the seat assembly 3 can slide towards the direction close to the first side bar so that the distance between the two gradually decreases until the two are close together, so that the folded The baby stroller is compact in structure and small in size; and when the baby stroller is unfolded, the seat bag assembly 3 can slide away from the first side bar so that the distance between the seat bag assembly 3 and the first side bar can be gradually increased. big. In a preferred manner, the seat pocket assembly 3 is arranged on the first side bar so as to slide up and down. When the stroller is folded, the seat pocket assembly 3 slides down close to the first side bar. When the stroller is unfolded, the seat pocket assembly 3 The seat pocket assembly 3 slides upwards away from the first side bar so that the seat pocket assembly 3 can be at a higher position on the stroller frame 1 .

The stroller frame 1 also includes a second side bar that is rotatably connected to the first side bar through the first shaft 21. When the stroller is folded, the first side bar turns over and the second side bar moves closer to drive the seat pocket assembly 3 directions. Sliding in a direction close to the first side bar, when the stroller is unfolded, the first side bar flips away from the second side bar to drive the seat pocket assembly 3 to slide in a direction away from the first side bar. The stroller also includes that when the stroller frame 1 is folded or unfolded, when the first side bar turns over relative to the second side bar, the seat pocket assembly 3 is driven to slide on the first side bar in a direction approaching or away from the first side bar. The driving mechanism 4. As shown in Fig. 3 and Fig. 4, the driving mechanism 4 includes a first driving member 41 fixedly arranged on the second side bar, a second driving member 42 matched with the first driving member 41, and a second driving member 42 matched with the second driving member 42. Combining the slide block 43 that can be slidably arranged on the first side bar in a direction approaching or away from the first side bar, the second drive member 42 is rotatably arranged on the first side bar through the second shaft 22, and the first shaft 21 Set parallel to the second shaft 22, the seat bag assembly 3 can be detachably arranged on the slider 43, when the first side bar turns over relative to the second side bar, through the first driving member 41 and the second driving member 42 The cooperation drives the second driving member 42 to rotate, and the cooperation between the second driving member 42 and the sliding block 43 drives the sliding block 43 to slide toward or away from the first side bar so that the seat bag assembly 3 moves closer to or away from the first side bar slide in the direction of .

As a specific embodiment, the first driving member 41 includes a first gear fixedly arranged on the second side bar, and the second driving member 42 includes a second gear 421 meshing with the first gear, and a second gear 421 meshing with the second gear 421. The third gear 422 that is fixedly connected, the slider 43 includes a rack 431, and the rack 431 meshes with the third gear 422. When the first side lever is turned over relative to the second side lever, the first gear and the second gear 421 The meshing of the third gear 422 and the rack 431 drives the sliding block 43 to slide towards or away from the first side bar.

A fixing seat 44 is fixed on the first side bar, and a sliding groove 441 is provided on the fixing seat 44. When the first side bar is turned over relative to the second side bar, the slider 43 is in the sliding slot 441 along the extension of the sliding slot 441. direction, so as to provide guidance for the seat bag assembly 3 to slide relative to the first side bar.

Seat assembly 3 is detachably connected to cart frame 1 in the following manner: seat assembly 3 also includes a second connecting piece 33 connected to the seat body, and two parts, the second connecting piece 33 and the slider 43 One of the parts is provided with a plug, and the other part is provided with a socket matched with the plug, and the seat bag assembly 3 is connected to the cart frame 1 through the cooperation of the plug and the socket.

When the seat pocket assembly 3 is grafted onto the stroller frame 1, in order to adjust the angle of the seat pocket assembly 3 relative to the horizontal plane, the seat pocket assembly 3 is rotatably connected with the second connecting member 33 .

As a stroller frame 1 in a specific embodiment, it includes a front bracket 11 , a rear bracket 12 , an upper push rod 13 , a lower push rod 14 , a first connecting rod 15 and a second connecting rod 16 . The front wheel assembly 6 is installed on the bottom of the front support 11; the rear support 12 includes a rear strut 121 which is arranged obliquely from top to bottom and a first connector 122 which is fixedly arranged on the upper end of the rear strut 121, and the rear wheel assembly 7 is installed on the bottom of the rear support rod 121, the top of the front bracket 11 is connected with the bottom of the first connecting piece 122 through the third shaft 23; the bottom of the upper push rod 13 is connected with the top of the lower push rod 14, and the bottom The bottom of the push rod 14 is rotatably connected to the top of the first connecting member 122 through the first shaft 21; one end of the first connecting rod 15 is rotatably connected to the bottom of the upper push rod 13, and the other end of the first connecting rod 15 It is rotatably connected with the rear strut 121 through the fourth shaft 24; one end of the second connecting rod 16 is rotatably connected with the front bracket 11 through the fifth shaft 25, and the other end of the second connecting rod 16 is connected with the first connecting rod 15 The other end portion is rotatably connected by the sixth shaft 26. In this embodiment, when the cart frame 1 is in the unfolded state, on the front bracket 11, the third axis 23 is located above the fifth axis 25, and on the first connecting rod 15, the fourth axis 24 is located on the sixth axis 26 rear. Like this, form a four-bar linkage mechanism between upper push rod 13, lower push rod 14, rear support 12 and first connecting rod 15, between front support 11, rear support 12, first connecting rod 15 and second connecting rod Also form a four-bar linkage between 16.

Seat assembly 3 among the present invention has two kinds of specific setting modes on the stroller frame 1 in this embodiment:

Example 1

The seat pocket assembly 3 is slidably arranged on the lower push rod 14, that is, the lower push rod 14 in this embodiment is the above-mentioned first side rod, and the rear bracket 12 is the second side rod. In this embodiment, the push rod for children When the car is folded, the lower surrounding frame 32 of the seat bag assembly turns upwards and moves closer to the upper surrounding frame 31, and the folded seat bag assembly 3 turns downwards along with the lower push rod 14 and approaches the direction of the lower push rod 14 when the rear bracket 12 moves closer. slide.

Example 2 (not shown)

The seat pocket assembly 3 can be slidably arranged on the front bracket 11, that is, the front bracket 11 in this embodiment is the above-mentioned first side bar, and the rear bracket 12 is the second side bar. In this embodiment, the stroller When folding, the upper frame 31 of the seat bag assembly turns downwards and draws close to the lower frame 32, and the folded seat bag assembly 3 slides in a direction close to the front frame 11 when the front frame 11 is turned backward and the rear frame 12 is close together.

Example 3 (not shown)

The seat pocket assembly 3 can be slidably arranged on the rear bracket 12, that is, the rear bracket 12 in this embodiment is the above-mentioned first side bar, at this time, the front bracket 11 or the lower push rod 14 can be the second side bar , in this embodiment, when the stroller is folded, the upper frame 31 of the seat assembly is flipped down and close to the lower frame 32, and the folded seat assembly 3 is turned backward with the front support 11 and close to the rear support 12 When sliding toward the direction close to the front frame 11 and close to the rear frame 12, or the lower frame 32 is turned up and close to the upper frame 31, when the folded seat pocket assembly 3 is turned down with the lower push rod 14 and is close to the rear frame 12 Slide towards the direction close to the lower push rod 14 and close to the rear bracket 12 .

The first lock mechanism used to lock the cart frame 1 in the present embodiment in the unfolded state can be arranged between any two parts that are rotationally connected in the above two four-bar linkages, and the first lock mechanism is not the original one. The technical points of patent protection can adopt the structure in the prior art.

The stroller also includes a carrying rod or strap 5. When the stroller is folded, the rods or straps 5 are pulled up to make the rods forming the stroller frame 1 fold closer to each other. Specifically, the left and right ends of the carrying rod or carrying strap 5 are fixedly arranged on the first connecting rod 15 or the second connecting rod 16 on the left and right sides, and are located on the first connecting rod 15 or the second connecting rod 16 close to the first connecting rod. At the position of six axis 26.

When the carrying rod or the carrying strap 5 is pulled up, the first lock mechanism can be unlocked and the stroller frame 1 can be folded at the same time, so that the folding operation of the children's stroller is more convenient.

When the stroller is in the unfolded state, as shown in Figures 1 and 2, the seat assembly 3 is grafted on the stroller frame 1, the front bracket 11, the first connecting piece 122, the lower push rod 14, and the upper push rod 13 extends along the same straight line direction, a triangular structure is formed between the upper push rod 13, the lower push rod 14, the rear support 12 and the first connecting rod 15, the front support 11, the rear support 12, the first connecting rod 15, the second connecting rod A triangular structure is also formed between 16, so that the baby stroller has a beautiful appearance and good rigidity, so that the baby stroller is in a stable unfolded state.

When the stroller is folded, taking Embodiment 1 as an example, the second lock mechanism is first unlocked, the lower frame 32 is turned up and close to the upper frame 31, and then the handle bar or strap 5 is lifted upwards to make the second lock mechanism A lock mechanism is unlocked, and at the same time, one end of the first connecting rod 15 and the second connecting rod 16 is driven to turn upwards, and the front bracket 11 is driven to turn backwards around the third axis 23 to move closer to the rear bracket 12, and at the same time, it is driven to push up The rod 13 turns forward and moves closer to the lower push rod 14, and the lower push rod 14 turns downward around the first axis 21 to move closer to the rear support 12. During the process of the lower push rod 14 turning downward and moving closer to the rear support 12, the driving mechanism 4 The sliding block 43 is driven to slide toward the lower push rod 14 relative to the fixed seat 44 , thereby driving the folded seat pocket assembly 3 to slide toward the lower push rod 14 and close together with the lower push rod 14 . The distance between the height direction and the front-to-back direction of the folded stroller is greatly reduced, so that the volume of the folded stroller is small, and the folded stroller can stand on the ground, and finally folded The final state is shown in Figure 7 and Figure 8.

When the stroller is unfolded from the folded state, still taking the example of Embodiment 1, the upper push rod 13 is turned backwards, and the front bracket 11 is driven forward around the third axis 23 through the first connecting rod 15 and the second connecting rod 16 Flip and unfold, the lower push rod 14 is turned upward around the first axis 21 and unfolded. During the upward flip of the lower push rod 14, the drive mechanism 4 drives the slider 43 to slide in a direction away from the lower push rod 14 relative to the fixed seat 44, thereby driving When the seat pocket assembly 3 slides to a set position in a direction away from the lower push rod 14, the lower surround frame 32 is flipped forward and unfolded, so far the unfolding operation of the stroller is completed.

To sum up, the structure of the children's stroller of the present invention is simple, and the seat assembly can be grafted on the stroller frame and folded together with the stroller frame. During the folding process of the stroller frame, the rods constituting the stroller frame are overturned The folded seat assembly can be driven to slide downwards and close to the stroller frame, so that the folded child stroller has a compact structure and a small volume, and when the stroller frame is unfolded, the rods forming the stroller frame can be turned Drive the seat pocket assembly to slide upwards to a higher position; and when the stroller frame is folded, you only need to pull up the handle bar or strap to make the rods that make up the stroller frame turn over and move closer together, which can realize When the stroller frame is opened from the folded state, just flip the upper push rod backwards to make the rods that make up the stroller frame turn over and unfold, so that the folding of the stroller It is very convenient to open and open.

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 (14)

1. a kind of children trolley, including the stroller frame with deployed condition and folded state, it is arranged on the stroller frame The anterior front component in bottom, be arranged on the stroller frame bottom rear portion wheel assembly, for the stroller frame to be locked The first latch mechanism in the deployed state, can removably seat pocket component of the grafting in the stroller frame, when the seat When in the stroller frame, the children trolley can fold the grafting of pocket component, it is characterised in that：The stroller frame includes First side lever, the seat pocket component can be slidably arranged in first side to the direction closer or far from first side lever On bar, when the children trolley folds, the seat pocket component makes the seat pocket to the slip close to the direction of first side lever The distance between component and first side lever reduce, when the stroller frame is deployed under folded state, the seat pocket group Part slides to the direction away from first side lever makes the distance between the seat pocket component and first side lever gradually increase.

2. children trolley according to claim 1, it is characterised in that：The stroller frame also includes and first side lever Rotate the second side lever of connection, and when the stroller frame folds, the first side lever upset draws close drive with second side lever The seat pocket component is set to be slided to close to the direction of first side lever, when the stroller frame is deployed, first side lever turns over Turn to drive the seat pocket component to slide to the direction away from first side lever away from second side lever.

3. children trolley according to claim 2, it is characterised in that：When the children trolley also includes the upset of the first side lever The seat pocket component is driven to include to the drive mechanism of the direction slip closer or far from first side lever, the drive mechanism The first actuator for being fixedly installed on second side lever, the second actuator being engaged with first actuator and institute First side lever can be slidably arranged in merging to the direction closer or far from first side lever by stating the second actuator On sliding block, second actuator can be rotatably arranged on first side lever, and the seat pocket component can be detachable Ground is arranged on the sliding block, when first side lever, second side lever upset relatively, by first actuator with The cooperation of second actuator drives second actuator to rotate, and passes through the cooperation of second actuator and the sliding block The sliding block is driven to the direction slip closer or far from first side lever.

4. children trolley according to claim 3, it is characterised in that：First actuator is described including being fixedly installed on First gear on second side lever, second actuator include be meshed with the first gear second gear, with it is described The 3rd gear that second gear is mutually fixedly connected, the sliding block include rack, and the rack is meshed with the 3rd gear, when First side lever relatively second side lever upset when, by the engaging of the first gear and the second gear, described 3rd gear drives the sliding block to the direction slip closer or far from first side lever with engaging for the rack.

5. children trolley according to claim 3, it is characterised in that：Fixed seat is fixed with first side lever, institute State fixed seat and be provided with chute, the sliding block can be slidably arranged in the chute along the bearing of trend of the chute.

6. children trolley according to claim 3, it is characterised in that：First side lever and second side lever pass through the One axle is rotated connection, and second actuator is rotated by the second axle with first side lever and is connected, the first axle with The parallel setting of second axle.

7. children trolley according to claim 2, it is characterised in that：Second side lever is used to install the rear wheels Part, the bottom of first side lever rotate with the top of second side lever and are connected, and the stroller frame also includes：

Fore-stock, for installing the front component, the top of the top of the fore-stock and second side lever rotates company Connect；

Upper push-rod, the bottom of the upper push-rod rotate with the top of first side lever and are connected；

First connecting rod, the one end of the first connecting rod rotate with the upper push-rod and are connected, the first connecting rod it is another End rotates with second side lever and is connected；

Second connecting rod, the one end of the second connecting rod rotate with the fore-stock and are connected, the other end of the second connecting rod Portion rotates with the other end of the first connecting rod and is connected.

8. children trolley according to claim 7, it is characterised in that：The seat pocket component includes the upper measurement for the connection that rotates Frame and lower enclosure frame, when the seat pocket component grafting folds in the children trolley in the stroller frame, the lower enclosure frame to Upper upset is drawn close with the upper enclosure frame, and first side lever downwardly turns over the seat drawn close with second side lever after making folding Pocket component is mutually drawn close to close to the slip of the direction of first side lever with first side lever.

9. children trolley according to claim 2, it is characterised in that：First side lever is used to install the front wheels Part, second side lever are used to install the wheel assembly, the top of first side lever and the top phase of second side lever Rotation connection, the stroller frame also include：

Upper push-rod；

Lower push-rod, the bottom of the upper push-rod rotate with the top of the lower push-rod and are connected, the bottom of the lower push-rod and institute The top for stating the second side lever rotates connection；

First connecting rod, the one end of the first connecting rod rotate with the upper push-rod and are connected, the first connecting rod it is another End rotates with second side lever and is connected；

Second connecting rod, the one end of the second connecting rod rotate with first side lever and are connected, the second connecting rod it is another End rotates with the other end of the first connecting rod and is connected.

10. children trolley according to claim 9, it is characterised in that：The seat pocket component includes the upper of connection that rotate Peripheral frame and lower enclosure frame, when the seat pocket component grafting is in the children trolley folding in the stroller frame, the upper enclosure frame Downwardly turn over and drawn close with the lower enclosure frame, first side lever, which turns over to draw close with second side lever, to be made described in after folding Seat pocket component is mutually drawn close to close to the slip of the direction of first side lever with first side lever.

11. children trolley according to claim 2, it is characterised in that：First side lever is used to install the rear wheels Part, second side lever are used to install the front component, the top of first side lever and the top phase of second side lever Rotation connection, the stroller frame also include：

Upper push-rod；

Lower push-rod, the bottom of the upper push-rod rotate with the top of the lower push-rod and are connected, the bottom of the lower push-rod and institute The top for stating the first side lever rotates connection；

First connecting rod, the one end of the first connecting rod rotate with the upper push-rod and are connected, the first connecting rod it is another End rotates with first side lever and is connected；

Second connecting rod, the one end of the second connecting rod rotate with second side lever and are connected, the second connecting rod it is another End rotates with the other end of the first connecting rod and is connected.

12. children trolley according to claim 1, it is characterised in that：The seat pocket component can slide up and down to setting On first side lever, when the children trolley folds, the seat pocket component slide downward close to first side lever, when During the children trolley expansion, the seat pocket component upward sliding is away from first side lever.

13. children trolley according to claim 1, it is characterised in that：The children trolley is additionally included in the children and pushed away Car can make each rod member of the composition stroller frame mutually fold what is drawn close when folding for lifting the stroller frame upwards Carry bar or carry band.

14. children trolley according to claim 13, it is characterised in that：When carrying bar described in upward lifting or carrying band First latch mechanism is driven to unlock.