CN211844595U - a children's stroller - Google Patents

Abstract

The utility model discloses a children's shallow, including the bottom sprag frame, upper portion support frame and seat support piece, the bottom sprag frame includes first supporting leg and second supporting leg, first supporting leg and second supporting leg lower extreme all are equipped with the wheel, first supporting leg is connected around first axis rotation with the second supporting leg, the top sprag frame includes well vaulting pole and last vaulting pole, well vaulting pole rotates around the second axis with the bottom sprag frame and is connected, go up the vaulting pole and rotate around the third axis with well vaulting pole and be connected, seat support piece connects on the top sprag frame, and children's shallow is ensured simultaneously when removing to folding position from expansion position: the upper end of the middle stay bar, the lower end of the upper stay bar and the lower end of the second support leg reach positions close to the lower end of the first support leg, the upper end of the upper stay bar reaches positions close to the upper end of the first support leg, and the seat support reaches positions close to the first support leg. The utility model has simple structure, small volume after folding and high seat height when unfolding.

Description

a children's stroller

【Technical field】

The utility model relates to a children's stroller.

【Background technique】

Strollers are an indispensable product for infants and young children to grow. At present, there are two main indicators to measure the pros and cons of a stroller: one is the size of the stroller after it is folded, and the other is the height of the seat when the stroller is unfolded. The smaller the folded volume, the easier it is to store or carry. The higher the seat in the unfolded state, the closer the adults and infants can be, and the interaction distance between adults and infants can be shortened, and the higher the seat, the stroller can be used as a dining chair. Use, push the stroller to the table to easily feed infants and toddlers. But the current stroller on the market generally can not achieve the best of both worlds.

Therefore, the present invention is based on the above shortcomings.

【Content of utility model】

The purpose of the utility model is to overcome the deficiencies of the prior art, and to provide a children's stroller with a simple structure, a small volume after being folded, and a high seat when unfolded.

The utility model is achieved through the following technical solutions:

A child stroller, which can be moved from the unfolded position to the folded position after the locking device is unlocked, is characterized in that it includes a bottom support frame 1, an upper support frame 2 and a seat support 3, and the bottom support frame 1 includes a first support frame 1. The support leg 11 and the second support leg 12, the lower ends of the first support leg 11 and the second support leg 12 are provided with wheels 13, the first support leg 11 and the second support leg 12 are around the first axis A Rotationally connected, the upper support frame 2 includes a middle support rod 21 and an upper support rod 22, the middle support rod 21 and the bottom support frame 1 are rotatably connected around the second axis B, and the upper support rod 22 is connected with the middle support rod 22. The struts 21 are rotatably connected around the third axis C, the seat support 3 is connected to the upper support frame 2, and when the stroller moves from the unfolded position to the folded position, it is ensured that: the upper end of the middle strut 21 , the lower end of the upper strut 22 and the lower end of the second supporting leg 12 reach the position close to the lower end of the first supporting leg 11 , the upper end of the upper strut 22 reaches the position close to the upper end of the first supporting leg 11 , and the seat support 3 reaches the position close to the first supporting leg 11 Location.

The stroller as described above is characterized in that: the first support leg 11 and the second support leg 12 are configured in a V shape and have a first V-shaped opening 4, and the first support leg 11 and the center support The rod 21 is V-shaped and has a second V-shaped opening 5, the middle and upper struts 21 and 22 are V-shaped and have a third V-shaped opening 6, and the first V-shaped opening 4 points to the ground, The openings of the second V-shaped opening 5 and the third V-shaped opening 6 are opposite to each other.

The above-mentioned baby stroller is characterized in that: the upper end of the upper strut 22 is rotatably connected with a hand push handle 7 around the sixth axis F. When the baby stroller moves from the unfolded position to the folded position, the hand The lower end of the push handle 7 reaches the position close to the upper end of the first support leg 11, and the upper end of the hand push handle 7 reaches the position close to the lower end of the first support leg 11; When moving from the unfolded position to the folded position, the push handle retracts into the upper strut 22 .

The above-mentioned stroller is characterized in that: the middle strut 21 and the first support leg 11 are rotatably connected around the second axis B, or the middle strut 21 and the second support leg 12 are rotated around the second axis B connection, or the middle strut 21 is rotatably connected with the first support leg 11 and the second support leg 12 around the second axis B.

The above-mentioned stroller is characterized in that: the front side of the seat support member 3 and the upper support frame 2 are provided with a connecting mechanism 8 for connecting the two, and the middle strut 21 is wound around the fourth axis D is rotatably connected with a first transmission rod 91, the upper end of the first transmission rod 91 is movably connected with the rear side of the seat support 3, the lower end of the first transmission rod 91 is slidably connected with the first support leg 11, and the A second transmission rod 92 is arranged between the first support leg 11 and the second support leg 12 , one end of the second transmission rod 92 is connected with the second support leg 12 in rotation around the fifth axis E, and the other end is connected with the first support The legs 11 are slidably connected and slide together when the lower end of the first transmission rod 91 slides along the first support leg 11 .

The above-mentioned stroller is characterized in that: the connecting mechanism 8 includes a connecting rod 81, one end of the connecting rod 81 is connected with the upper strut 22 in rotation around the eighth axis H, and the other end is around the ninth axis I It is pivotally connected to the front side of the seat support 3 .

The above-mentioned stroller is characterized in that: the first transmission rod 91 is rotatably connected with the seat support 3 around the sixteenth axis Q.

The above-mentioned stroller is characterized in that: the first support leg 11 is provided with a chute 111, the lower end of the first transmission rod 91 is provided with an insertion chute 111 and can drive the first transmission rod 91 The slide column whose lower end slides along the first support leg 11, the second transmission rod 92 is connected with the lower end of the first transmission rod 91 in rotation around the seventh axis G; For the sliding sleeve 112 that slides, the lower end of the first transmission rod 91 is hinged on the sliding sleeve 112 , and the second transmission rod 92 is hinged on the sliding sleeve 112 or the first transmission rod 91 .

The above-mentioned stroller is characterized in that: a handrail 23 is also provided between the upper strut 22 and the seat support 3, and one end of the handrail 23 and the upper strut 22 surround the tenth axis J Rotationally connected, the other end is rotatably connected with the seat support 3 around the eleventh axis K.

The above-mentioned stroller is characterized in that: the connecting mechanism 8 includes a sliding sleeve 82 that can slide along the seat support 3, and the connecting mechanism 8 also includes one end and the upper strut 22 around the twelfth axis The upper connecting piece 83 is rotatably connected with L and the other end is rotatably connected with the sliding sleeve 82 around the thirteenth axis M; 8 also includes a lower connecting piece 84 whose one end is rotatably connected with the middle strut 21 around the fourteenth axis N, and the other end is rotatably connected with the sliding sleeve 82 around the fifteenth axis P. The upper strut 22 is connected to the seat support 3 There is also a handrail 23 between, one end of the handrail 23 is connected with the upper strut 22 in rotation around the tenth axis J, and the other end is connected with the seat support 3 in rotation around the eleventh axis K. A front armrest 24 is connected to the 23 .

Compared with the prior art, the utility model has the following advantages:

1. The bottom support frame of the present utility model is supported on the ground, the middle support rod is rotatably connected to the bottom support frame, and the upper support rod is rotatably connected to the middle support rod. Therefore, when the stroller is unfolded, the middle support rod is A high position can be reached, so that the seat support attached to the upper support frame can be located in a high position, so that the seat of the stroller is high, and the adult can push the stroller through the upper support bar. It is convenient to interact with children, and also allows the stroller to be used directly as a dining chair when it is placed next to the dining table. In addition, since the upper strut, the middle strut, the first support leg and the second support leg are all rotationally connected to each other, when the stroller is folded, the upper end of the middle strut, the lower end of the upper strut and the lower end of the second support leg reach close to each other. The position of the lower end of the first support leg, the upper end of the upper support rod to the position close to the upper end of the first support leg, and the position of the seat support to the position close to the first support leg, therefore, the folded length of the stroller does not exceed the length after the first support leg is connected to the wheel. The length of the stroller makes the stroller small and easy to carry after being folded. Therefore, the stroller of the utility model can not only ensure a high seat in the unfolded state, but also ensure a small volume in the folded state, so as to achieve the best of both worlds, and is suitable for popularization and application.

2. The first support leg and the second support leg of the present utility model are configured into a V shape and have a first V-shaped opening, the first support leg and the middle support rod are configured into a V shape and have a second V-shaped opening, and the middle support rod is formed into a V shape. The upper strut is V-shaped and has a third V-shaped opening, and the first V-shaped opening is directed to the ground, and the second V-shaped opening is opposite to the opening of the third V-shaped opening. The first V-shaped opening points to the ground, so the first and second support legs ensure that the stroller stands firmly on the ground, while the opening of the second V-shaped opening is opposite to the opening of the third V-shaped opening, so that the first The support legs, middle struts and upper struts are constructed to climb up obliquely in a zigzag shape. Under the condition of satisfying the structural strength of the stroller and the compact structure in the unfolded state, the effect of using shorter link members to achieve seat height can be achieved. The baby stroller has a high seat in the unfolded state and a small volume in the folded state, and the design is very clever.

3. The upper end of the upper support rod of the present invention is connected with a hand push handle in rotation around the sixth axis. When the stroller moves from the unfolded position to the folded position, the lower end of the hand push handle reaches the position close to the upper end of the first support leg, and the push handle is pushed by hand. Bring the upper end to a position close to the lower end of the first support leg. The setting of the push handle enables the user to push the stroller for walking more conveniently, and when the stroller is folded, the push handle is superimposed on the upper strut to ensure that the stroller has a small folded volume.

4. The utility model has the advantages of simple structure, small volume after folding, and high seat when unfolded, which is suitable for popularization and application.

【Description of drawings】

1 is a perspective view of Embodiment 1 of the present invention;

FIG. 2 is a side view of Embodiment 1 of the present utility model in an unfolded state;

Fig. 3 is one of the side views during the folding process of Embodiment 1 of the present invention;

Fig. 4 is the second side view during the folding process of Embodiment 1 of the present utility model;

FIG. 5 is a side view of Embodiment 1 of the present utility model in a folded state;

6 is a side view of the second embodiment of the present utility model in an unfolded state;

Fig. 7 is the side view during the folding process of Embodiment 2 of the present utility model;

FIG. 8 is a side view of Embodiment 3 of the present utility model in an unfolded state;

Fig. 9 is the side view during the folding process of Embodiment 3 of the present utility model;

Figure 10 is a side view of Embodiment 4 of the present utility model in an unfolded state;

Fig. 11 is the side view during the folding process of Embodiment 4 of the present invention;

FIG. 12 is a side view of the fifth embodiment of the present invention in an unfolded state.

【Detailed ways】

Below in conjunction with accompanying drawing, the utility model is further described:

Example 1:

As shown in Figures 1 to 5, a child stroller, which can be moved from an unfolded position to a folded position after the locking device is unlocked, includes a bottom support frame 1, an upper support frame 2 and a seat support 3. The bottom support frame The frame 1 includes a first support leg 11 and a second support leg 12 , the lower ends of the first support leg 11 and the second support leg 12 are provided with wheels 13 , the first support leg 11 and the second support leg 12 . Rotationally connected around the first axis A, the upper support frame 2 includes a middle support rod 21 and an upper support rod 22, the middle support rod 21 is connected with the bottom support frame 1 in a rotation around the second axis B, and the upper support frame 2 is rotatably connected. The strut 22 and the middle strut 21 are rotatably connected around the third axis C, the seat support 3 is connected to the upper support frame 2, and the stroller is moved from the unfolded position to the folded position while ensuring: the said The upper end of the middle support rod 21, the lower end of the upper support rod 22 and the lower end of the second support leg 12 reach the position close to the lower end of the first support leg 11, the upper end of the upper support rod 22 reaches the position close to the upper end of the first support leg 11, and the seat support 3 reaches the position close to the upper end of the first support leg 11. The position of the first support leg 11. The bottom support frame 1 is supported on the ground, the middle support rod 21 is rotatably connected to the bottom support frame 1, and the upper support rod 22 is rotatably connected to the middle support rod 21. Therefore, when the stroller is unfolded, the middle support rod 21 is A higher position can be reached, so that the seat support 3 connected to the upper support frame 2 can be located at a higher position, so that the seat of the child stroller is higher, and the adult pushes the child pusher through the upper support rod 22. It is convenient to interact with children when driving, and it also makes the stroller can be used directly as a dining chair when it is placed next to the dining table. In addition, since the upper support rod 22, the middle support rod 21, the first support leg 11 and the second support leg 12 are all connected to each other in rotation, when the stroller is folded, the upper end of the middle support rod 21, the lower end of the upper support rod 22 and the The lower end of the second support leg 12 reaches the position close to the lower end of the first support leg 11, the upper end of the upper support rod 22 reaches the position close to the upper end of the first support leg 11, and the seat support 3 reaches the position close to the first support leg 11. Therefore, the stroller is folded The rear length does not exceed the length after the first support leg 11 is connected to the wheel 13 , so that the baby stroller has a small size after being folded and is easy to carry. Therefore, the stroller of the utility model can not only ensure a high seat in the unfolded state, but also ensure a small volume in the folded state, so as to achieve the best of both worlds, and is suitable for popularization and application. The locking device of the children's stroller of the present invention can adopt the locking structure of the traditional children's stroller, which will not be repeated here.

As shown in FIG. 2 , the first support leg 11 and the second support leg 12 are configured in a V shape and have a first V-shaped opening 4 , and the first support leg 11 and the middle support rod 21 are configured in a V shape And has a second V-shaped opening 5, the middle strut 21 and the upper strut 22 are configured into a V shape and have a third V-shaped opening 6, and the first V-shaped opening 4 points to the ground, and the second V-shaped opening 5 It is opposite to the opening of the third V-shaped opening 6 . The first V-shaped opening 4 points to the ground, so the first support leg 11 and the second support leg 12 ensure that the stroller stands firmly on the ground, while the openings of the second V-shaped opening 5 and the third V-shaped opening 6 face On the contrary, the first support leg 11, the middle support rod 21 and the upper support rod 22 are configured to climb obliquely in a zigzag shape, so as to meet the structural strength of the stroller and the compact structure in the unfolded state, so as to achieve the use of shorter link members. The effect of the seat height is achieved, and then the effect of the high seat in the unfolded state and the small volume in the folded state of the stroller is realized, and the design is very ingenious.

As shown in FIG. 1 and FIG. 2 , the upper end of the upper strut 22 is rotatably connected with a handle 7 around the sixth axis F. When the stroller moves from the unfolded position to the folded position, the handle 7 The lower end reaches the position close to the upper end of the first support leg 11, and the upper end of the hand push handle 7 reaches the position close to the lower end of the first support leg 11. The setting of the hand push handle 7 enables the user to push the stroller for walking more conveniently. When the stroller is folded, the push handle 7 is superimposed on the upper strut 22 to ensure that the stroller has a small folded volume. Of course, in order to push the stroller more conveniently, a push handle can also be slidably arranged in the upper strut 22. When the stroller moves from the unfolded position to the folded position, the push handle is retracted. into the upper strut 22.

As shown in FIG. 2 , the middle strut 21 is rotatably connected with the first support leg 11 and the second support leg 12 around the second axis B. At this time, the first axis A and the second axis B are coincident, so that the child The cart can be folded flexibly, folded easily, and has a compact structure. Of course, the middle strut 21 can also be rotatably connected only with the first support leg 11 around the second axis B or only with the second support leg 12 around the second axis B.

As shown in FIGS. 1 to 4 , a connecting mechanism 8 is provided between the front side of the seat support 3 and the upper support frame 2 to connect the two, and the middle strut 21 is rotatably connected around the fourth axis D. There is a first transmission rod 91, the upper end of the first transmission rod 91 is movably connected with the rear side of the seat support 3, the lower end of the first transmission rod 91 is slidably connected with the first support leg 11, and the first support A second transmission rod 92 is arranged between the leg 11 and the second supporting leg 12 , one end of the second transmission rod 92 is connected with the second supporting leg 12 in rotation around the fifth axis E, and the other end is slidable with the first supporting leg 11 Connect and slide together when the lower end of the first transmission rod 91 slides along the first support leg 11 . When the stroller is folded, the upper support rod 22 rotates relative to the middle support rod 21, and exerts a force on the first transmission rod 91 through the rear side of the seat support 3, and the first transmission rod 9 rotates around the fourth axis D, and the first transmission rod 9 rotates around the fourth axis D. The lower end of the transmission rod 91 slides down along the first support leg 11, so the lower end of the second transmission rod 92 slides down along the first support leg 11, thereby pulling the middle support rod 21 and the second support leg 12 closer to the first support leg. On a support leg 11, the upper end of the middle support rod 21, the lower end of the upper support rod 22 and the lower end of the second support leg 12 reach a position close to the lower end of the first support leg 11, and the upper end of the upper support rod 22 reaches a position close to the upper end of the first support leg 11, And the seat support 3 reaches a position close to the first support leg 11 .

As shown in FIG. 1 and FIG. 2 , the connecting mechanism 8 includes a connecting rod 81, one end of the connecting rod 81 is rotatably connected with the upper strut 22 around the eighth axis H, and the other end is connected with the seat support around the ninth axis I Piece 3 front side turn connection.

As shown in FIG. 1 and FIG. 2 , the first transmission rod 91 is rotatably connected with the seat support 3 around the sixteenth axis Q.

As shown in FIG. 1 , the first support leg 11 is provided with a chute 111 , and the lower end of the first transmission rod 91 is provided with an insertion chute 111 to drive the lower end of the first transmission rod 91 along the first support leg 11 is a sliding column (not shown in the figure), the second transmission rod 92 is rotatably connected with the lower end of the first transmission rod 91 around the seventh axis G. The first transmission rod 91 slides in the chute 111 through the sliding column, so that the process of the middle strut 21 and the second supporting leg 12 approaching the first supporting leg 11 is very flexible.

Example 2:

As shown in Figure 6 and Figure 7, the difference between Embodiment 2 and Embodiment 1 is:

The connecting mechanism 8 includes a sliding sleeve 82 that can slide along the seat support 3. The connecting mechanism 8 also includes one end that is rotatably connected with the upper strut 22 around the twelfth axis L, and the other end is connected to the sliding sleeve 82 around the twelfth axis L. The thirteen axes M are rotatably connected to the upper connecting piece 83 . When the stroller is folded, the upper strut 22 rotates relative to the middle strut 21, the sliding sleeve 82 slides on the seat support 3, and exerts a force on the first transmission rod 91 through the seat support 3, thereby realizing the push of the child. car folded.

Example 3:

As shown in Figure 8 and Figure 9, the difference between Embodiment 3 and Embodiment 1 is:

The connecting mechanism 8 includes a sliding sleeve 82 that can slide along the seat support 3. The connecting mechanism 8 also includes one end that is rotatably connected to the middle strut 21 around the fourteenth axis N, and the other end that is connected to the sliding sleeve 82 around the fourth axis. The lower connecting piece 84 is rotatably connected with the fifteenth axis P, a handrail 23 is also provided between the upper strut 22 and the seat support 3, and one end of the handrail 23 and the upper strut 22 are around the tenth axis J The other end is connected in rotation with the seat support 3 around the eleventh axis K, and the armrest bar 23 is connected with a front armrest 24 . In this embodiment, the eleventh axis K coincides with the sixteenth axis Q. When the stroller is folded, the upper strut 22 rotates relative to the middle strut 21, and the armrest bar 23 exerts a force on the seat support 3, and then the seat support 3 exerts a force on the first transmission rod 91. During this process , the seat support 3 moves relative to the upper support frame 2 , the sliding sleeve 82 slides on the seat support 3 , and the lower connecting piece 84 rotates relative to the middle support rod 21 , and finally the stroller is folded. In this embodiment, the front armrest 24 can be grasped by children to ensure safety.

Example 4:

As shown in Figure 10 and Figure 11, the difference between Embodiment 4 and Embodiment 1 is:

There is also a handrail 23 between the upper stay 22 and the seat support 3, one end of the handrail 23 is connected with the upper stay 22 in rotation around the tenth axis J, and the other end is connected with the seat support 3 around the 10th axis. Eleven axes K are rotatably connected. In this embodiment, the eleventh axis K coincides with the sixteenth axis Q. The arrangement of the armrest bar 23 can increase the load-bearing capacity of the seat support 3 and improve the strength. In addition, a front armrest 24 can also be connected to the armrest bar 23. The front armrest 24 is provided for children to grasp and ensure safety, and when the stroller is folded, the front armrest 24 can follow the linkage, and it is not necessary to fold the front armrest 24 separately. , the operation is very convenient.

Example 5:

As shown in Figure 12, the difference between Embodiment 5 and Embodiment 1 is:

The first support leg 11 is provided with a sliding sleeve 112 that can slide along it, the lower end of the first transmission rod 91 is hinged on the sliding sleeve 112 , and the second transmission rod 92 is hinged on the sliding sleeve 112 or hinged on the first transmission rod 91 . In this embodiment, the first support leg 11 is no longer provided with a sliding groove, but a sliding sleeve 112 is sleeved on the first supporting leg 11 , and the lower end of the first transmission rod 91 and the upper end of the second transmission rod 92 follow the sliding sleeve 112 By sliding along the first support leg 11 , the middle strut 21 and the second support leg 12 are folded toward the first support leg 11 .

Claims (10)

1. A stroller, movable from an unfolded position to a folded position after a locking device is unlocked, characterized in that: comprises a bottom support frame (1), an upper support frame (2) and a seat support piece (3), the bottom support frame (1) comprises a first support leg (11) and a second support leg (12), the lower ends of the first supporting leg (11) and the second supporting leg (12) are both provided with wheels (13), the first supporting leg (11) and the second supporting leg (12) are rotationally connected around a first axis (A), the upper supporting frame (2) comprises a middle supporting rod (21) and an upper supporting rod (22), the middle support rod (21) is rotatably connected with the bottom support frame (1) around a second axis (B), the upper stay bar (22) is rotationally connected with the middle stay bar (21) around a third axis (C), the seat support (3) is connected to the upper support (2) and the pushchair, when moving from the unfolded position to the folded position, simultaneously ensures: the upper end of the middle support rod (21), the lower end of the upper support rod (22) and the lower end of the second support leg (12) reach positions close to the lower end of the first support leg (11), the upper end of the upper support rod (22) reaches positions close to the upper end of the first support leg (11), and the seat support piece (3) reaches positions close to the first support leg (11).

2. The stroller of claim 1, wherein: the first supporting leg (11) and the second supporting leg (12) are constructed into a V shape and are provided with a first V-shaped opening (4), the first supporting leg (11) and the middle supporting rod (21) are constructed into a V shape and are provided with a second V-shaped opening (5), the middle supporting rod (21) and the upper supporting rod (22) are constructed into a V shape and are provided with a third V-shaped opening (6), the first V-shaped opening (4) points to the ground, and the opening directions of the second V-shaped opening (5) and the third V-shaped opening (6) are opposite.

3. The stroller of claim 1, wherein: the upper end of the upper support rod (22) is rotatably connected with a hand push handle (7) around a sixth axis (F), when the stroller moves from the unfolding position to the folding position, the lower end of the hand push handle (7) reaches a position close to the upper end of the first support leg (11), and the upper end of the hand push handle (7) reaches a position close to the lower end of the first support leg (11); or, a hand push handle is connected in the upper support rod (22) in a sliding mode, and when the stroller moves from the unfolding position to the folding position, the hand push handle is retracted into the upper support rod (22).

4. The stroller of claim 1, wherein: the middle support rod (21) is rotatably connected with the first support leg (11) around a second axis (B), or the middle support rod (21) is rotatably connected with the second support leg (12) around the second axis (B), or the middle support rod (21) is rotatably connected with the first support leg (11) and the second support leg (12) around the second axis (B).

5. The stroller of claim 1, wherein: seat support piece (3) front side and upper portion support frame (2) between be equipped with coupling mechanism (8) of being connected the two, well vaulting pole (21) on rotate around fourth axis (D) and be connected with first transfer line (91), first transfer line (91) upper end and seat support piece (3) rear side swing joint, first transfer line (91) lower extreme and first supporting leg (11) sliding connection, first supporting leg (11) and second supporting leg (12) between be equipped with second transfer line (92), second transfer line (92) one end and second supporting leg (12) rotate around fifth axis (E) and be connected, the other end and first supporting leg (11) sliding connection and follow when first transfer line (91) lower extreme slides along first supporting leg (11) and slide together.

6. The stroller of claim 5, wherein: the connecting mechanism (8) comprises a connecting rod (81), one end of the connecting rod (81) is rotatably connected with the upper stay bar (22) around an eighth axis (H), and the other end of the connecting rod (81) is rotatably connected with the front side of the seat supporting piece (3) around a ninth axis (I).

7. The stroller of claim 5, wherein: the first transmission rod (91) is rotatably connected with the seat supporting piece (3) around a sixteenth axis (Q).

8. The stroller of claim 5, wherein: the first support leg (11) is provided with a sliding groove (111), the lower end of the first transmission rod (91) is provided with a sliding column which is inserted into the sliding groove (111) and can drive the lower end of the first transmission rod (91) to slide along the first support leg (11), and the second transmission rod (92) is rotatably connected with the lower end of the first transmission rod (91) around a seventh axis (G); or, first supporting leg (11) on be equipped with can follow its gliding sliding sleeve (112), first transfer line (91) lower extreme articulate on sliding sleeve (112), and second transfer line (92) articulate on sliding sleeve (112) or articulate on first transfer line (91).

9. Child stroller according to any of claims 5 to 8, characterized in that: and a grab rail (23) is arranged between the upper stay bar (22) and the seat support piece (3), one end of the grab rail (23) is rotatably connected with the upper stay bar (22) around a tenth axis (J), and the other end of the grab rail is rotatably connected with the seat support piece (3) around an eleventh axis (K).

10. The stroller of claim 5, wherein: the connecting mechanism (8) comprises a sliding sleeve (82) capable of sliding along the seat supporting piece (3), and the connecting mechanism (8) also comprises an upper connecting sheet (83) with one end rotatably connected with the upper stay bar (22) around a twelfth axis (L) and the other end rotatably connected with the sliding sleeve (82) around a thirteenth axis (M); or, the connecting mechanism (8) comprises a sliding sleeve (82) capable of sliding along the seat support (3), the connecting mechanism (8) further comprises a lower connecting piece (84) with one end rotatably connected with the middle stay bar (21) around a fourteenth axis (N) and the other end rotatably connected with the sliding sleeve (82) around a fifteenth axis (P), a handrail rod (23) is further arranged between the upper stay bar (22) and the seat support (3), one end of the handrail rod (23) is rotatably connected with the upper stay bar (22) around a tenth axis (J), the other end is rotatably connected with the seat support (3) around an eleventh axis (K), and the handrail rod (23) is connected with a front handrail (24).

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