CN217892953U - Children's barrow - Google Patents

Abstract

The utility model relates to a children's shallow, including the frame that has expansion state and fold condition, locate front wheel subassembly and the rear wheel subassembly of frame lower part, the frame includes: the front wheel assembly is arranged on the front supporting leg at the lower part of the front wheel assembly; the rear wheel assembly is arranged on the rear supporting leg at the lower part of the rear wheel assembly; the seat rod for connecting a seat for children to sit comprises a front seat rod and a rear seat rod, wherein the rear part of the front seat rod is connected with the front part of the rear seat rod in a sliding manner along the front-back direction, and the front end part of the front seat rod, the upper end part of a front supporting leg and the upper end part of a rear supporting leg are mutually pivoted; a front pull rod with the front end part connected with the front supporting leg pivot and the rear end part connected with the rear seat rod pivot; the lower end part of the rear pull rod is connected with a rear supporting leg through a pivot; the lower part of the push handle rod, the rear seat rod and the upper end part of the rear pull rod are mutually pivoted; the front end part of the upper connecting rod is pivoted with the front end part of the front seat rod and the like, and the rear end part of the upper connecting rod is pivoted with the push handle rod. The folding operation of this children's shallow is convenient, makes things convenient for children's shallow's use.

Description

Children's barrow

Technical Field

The utility model relates to a children's articles for use technical field, concretely relates to children's shallow.

Background

The baby stroller plays an important role in daily life of people for carrying babies to go out, and is one of indispensable children products in the growth process of children at present.

In order to bring convenience to storage and transport, the existing stroller generally adopts a foldable frame, but in the prior art, when the stroller is folded, due to the complex structure of the frame, a plurality of parts such as a front bracket, a rear bracket and a push rod of the stroller need to be operated respectively, and the whole stroller is completely folded or completely unfolded, so that a plurality of steps are needed, the operation is complex, and the required operation time is long.

Disclosure of Invention

The utility model aims at providing a child cart, the operation of folding and expansion can be realized in step in the mutual linkage of a plurality of member of its frame.

In order to achieve the above purpose, the utility model adopts the technical scheme that:

a stroller comprising a frame having an expanded configuration and a collapsed configuration, a front wheel assembly and a rear wheel assembly disposed at a lower portion of the frame, the frame comprising:

the front wheel assembly is arranged at the lower part of the front supporting leg;

the rear wheel assembly is arranged at the lower part of the rear supporting leg;

the seat rod is used for connecting a seat for seating a child, and comprises a front seat rod and a rear seat rod, wherein the rear part of the front seat rod is connected with the front part of the rear seat rod in a sliding mode along the front-back direction, one of the three parts, namely the front end part of the front seat rod, the upper end part of the front leg and the upper end part of the rear leg, is pivotally connected with the other part, and the third part is also pivotally connected with at least one of the other two parts;

the front end part of the front pull rod is connected with the front supporting leg pivot, and the rear end part of the front pull rod is connected with the rear seat rod pivot;

the lower end part of the rear pull rod is connected with the rear support leg through a pivot;

the push handle rod, the lower part of the push handle rod, the backseat rod and the upper end part of the rear pull rod, wherein one part is pivotally connected with the other part, the third part is also pivotally connected with one part of the other two parts, or the lower part of the push handle rod, the backseat rod and the upper end part of the rear pull rod are pivotally connected together;

the rear end part of the upper connecting rod is pivotally connected with the push handle rod, two of the four parts of the front end part of the upper connecting rod, the upper end part of the rear supporting leg, the upper end part of the front supporting leg and the front end part of the front seat rod are pivotally connected, the third part is pivotally connected with one of the first two parts, the fourth part is pivotally connected with one of the first three parts, or any three of the four parts are pivotally connected together, and the rest part is pivotally connected with any one of the first three parts, or the four parts are pivotally connected together.

Preferably, the seat post further comprises an inner seat post, the inner seat post is at least partially disposed in the rear seat post, the rear end of the inner seat post is fixedly connected with the rear end of the rear seat post, the front seat post is slidably sleeved outside the inner seat post, and when the frame is in the unfolded state, the rear end of the front seat post slides into the rear seat post, the rear seat post can provide a larger volume structure as an external loop bar, so that the connection of the post members is more stable, and the limitation of relative sliding between the rear seat post and the front seat post due to the fact that the rear seat post is simultaneously connected with the front pull rod, the rear pull rod and the push handle rod through pivots is avoided.

Preferably, the front end of the front pull rod is connected to the middle of the front support leg, so that the front pull rod pulls the rotating arm of the front support leg to be larger, and the front support leg is more labor-saving, and meanwhile, the pivot connection point is prevented from being too close to the connection point of the front pull rod and the front wheel assembly, and the mutual influence of the folded structure positions of the frame is prevented.

Preferably, the upper end of the rear pull rod is connected to the rear end of the rear seat rod, and due to structural limitations, when the frame is in the unfolding state, the connecting position of the rear pull rod on the rear seat rod is delayed as far as possible, so that on one hand, the rear pull rod can be vertical as much as possible in the unfolding state to provide vertical support, and meanwhile, the operation of the rear support leg is more labor-saving during the unfolding and folding operations.

Preferably, the lower end part of the push handle rod is connected with the rear end part of the rear seat rod, and the connecting position of the push handle rod on the rear seat rod is delayed as far as possible, so that the push handle rod is rotated to drive the rear seat rod to slide, and the labor is saved.

Preferably, the rear end part of the backseat rod, the upper end part of the rear pull rod and the lower end part of the push handle rod are coaxially connected, so that the whole structure is more compact, the connection points are reduced, the frame is more stable, and the frame is more labor-saving during unfolding and folding operations.

Preferably, the upper end part of the front supporting leg, the upper end part of the rear supporting leg, the front end part of the front seat rod and the front end part of the upper connecting rod are coaxially connected, so that the whole structure is more compact, the connecting points are reduced, the frame is more stable, and the mutual interference of the forces for pulling the rod pieces in the folding and unfolding processes of the frame is reduced.

Preferably, the push handle rod comprises an upper push handle rod and a lower push handle rod, the lower end of the upper push handle rod is pivoted with the upper end of the lower push handle rod, the lower part of the lower push handle rod is pivoted with the rear end of the rear seat rod, the rear end of the upper connecting rod is pivoted with the lower push handle rod, and the volume of the folded frame is further reduced by folding the push handle rod.

Preferably, the connection point of the upper connecting rod on the lower push handle rod is positioned in the middle of the lower push handle rod, the push handle rod is rotated to drive the backseat rod to slide in a more labor-saving manner, and the whole frame structure is more compact and smaller.

Preferably, the lower end of the rear pull rod is pivotally connected to the rear leg at a position below the middle of the rear leg.

Because of the application of the technical scheme, compared with the prior art, the utility model has the advantages of it is following:

the utility model discloses, main part bearing structure such as children's shallow front leg, back landing leg, front seat pole, back seat pole, push handle pole realizes linking each other through front pull rod, back pull rod, only needs the backward slip back seat pole can realize the folding of frame for front leg, back landing leg draw close to front seat pole, back seat pole, realize rotating the push handle pole through being connected of push handle pole and back seat pole simultaneously and drive the back seat pole and move backward, realize putting in order the car linkage. The folding operation of the baby stroller is convenient, and the baby stroller is convenient to use.

Drawings

Fig. 1 is a schematic perspective view of the stroller of the present embodiment in a frame-unfolded state;

FIG. 2 is a schematic side view of the stroller of the present embodiment in a deployed configuration;

FIG. 3 is a schematic side view of the stroller of the present embodiment shown in the folded or unfolded position;

FIG. 4 is a side view of the stroller in the collapsed configuration of the frame of the present embodiment;

FIG. 5 is a schematic axial cross-sectional view of the seat post in the deployed condition of the frame in this embodiment;

fig. 6 is a schematic axial cross-sectional view of the seat post in the folded condition of the frame in this embodiment.

In the above drawings:

1. a frame; 11. a front leg; 12. a rear leg; 13. a seat post; 131. a front seat post; 132. a rear seat post; 133. an inner seat post; 14. a front pull rod; 15. a rear pull rod; 16. a handle pushing rod; 161. pushing the handle rod upwards; 162. a lower push rod; 17. an upper connecting rod;

2. a front wheel assembly; 3. a rear wheel assembly;

41. a front transverse connecting rod; 42. a rear upper transverse connecting rod; 43. a rear lower transverse connecting rod.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The pivotal connection herein means that a plurality of members are connected by a rotating shaft, and the connected members can rotate about the rotating shaft.

In the drawings of the present embodiment, when an infant sits on the stroller with the infant facing in the forward direction of pushing the stroller, the infant facing direction is the "front" side, the backrest direction is the "rear" side, the left-hand direction is the "left" side, the right-hand direction is the "right" side, the vertex direction is the "up" side, and the sitting direction is the "down" side, and in the present embodiment, the left side of fig. 2 is the "front", the right side is the "rear", the upper side is the "up", the lower side is the "down", the paper surface is outward "left", and the paper surface is inward "right".

As shown in fig. 1 to 4, the stroller includes a frame 1 having an unfolded state and a folded state, a front wheel assembly 2 disposed at a lower front portion of the frame 1, and a rear wheel assembly 3 disposed at a lower rear portion of the frame 1. The vehicle frames 1 are basically arranged in bilateral symmetry, and the lower parts of the vehicle frames 1 at two sides are provided with a front wheel component 2 and a rear wheel component 3. In the present embodiment, only one frame 1 will be described, and the other frame 1 has the same structure and connection relationship. Wherein:

the frame 1 comprises a front leg 11, a rear leg 12, a seat rod 13 (the seat rod 13 comprises a front seat rod 131 and a rear seat rod 132), a front pull rod 14, a rear pull rod 15, a push handle rod 16 and an upper connecting rod 17. Wherein the front wheel assembly 2 is arranged at the lower part of the front leg 11, and the rear wheel assembly 3 is arranged at the lower part of the rear leg 12. When the frame 1 is in an unfolded state, the front leg 11 extends from bottom to top along the oblique rear direction, the rear leg 12 extends from bottom to top along the oblique front direction, the seat rod 13 and the upper connecting rod 17 both extend approximately along the front-rear direction, and the rear pull rod 15 and the push handle rod 16 both extend approximately along the up-down direction.

As shown in fig. 1 and 2, when the vehicle body frame 1 is in the unfolded state, the upper end portion of the rear leg 12, the front end portion of the front seat bar 131, the upper end portion of the front leg 11, and the front end portion of the upper link 17 are pivotally connected to two of the four members, the third member is pivotally connected to one of the first two members, the fourth member is pivotally connected to one of the first three members, or any three of the four members are pivotally connected together, and the remaining one member is pivotally connected to any one of the first three members, or the four members are pivotally connected together. In the present embodiment, the upper end of the front leg 11, the upper end of the rear leg 12, the front end of the front seat rod 131, and the front end of the upper link 17 are coaxially connected, or the upper end of the rear leg 12 may be pivotally connected to three other rods (the three other rods refer to the front leg 11, the front seat rod 131, and the upper link 17) through two or more rotating shafts, so that the rods do not interfere with each other when folded, which is the prior art and is equivalent to coaxial connection. Specifically, the front end of front seat lever 131 is located innermost among the four.

The front end of the front pull rod 14 is pivotally connected to the front leg 11, the rear end of the front pull rod 14 is pivotally connected to the seat post 13, one of the three components of the lower end of the push handle rod 16, the rear seat rod 132 and the upper end of the rear pull rod 15 is pivotally connected to the other component, the third component is also pivotally connected to one of the other two components, or the three components of the lower end of the push handle rod 16, the rear seat rod 132 and the upper end of the rear pull rod 15 are pivotally connected together. In the present embodiment, the rear end of the backseat rod 132, the upper end of the rear pull rod 15, and the lower end of the push handle rod 16 are coaxially connected. Specifically, the rear end of the backseat lever 132 is positioned innermost, the upper end of the backseat lever 15 is positioned outside the rear end of the backseat lever 132, and the lower end of the push handle lever 16 is positioned outside the upper end of the backseat lever 15. The rear end of the rear seat rod 132 may be pivotally connected to two other rod members (the other two rod members refer to the rear pull rod 15 and the push handle rod 16) through two rotating shafts, so that the rod members do not interfere with each other when folded, which is the prior art and is the equivalent of coaxial connection. The lower end of the rear tie rod 15 is pivotally connected to the rear leg 12.

The rear end of the upper link 17 is pivotally connected to the push handle bar 16, and the entire frame 1 is folded and unfolded in a linked manner by the linkage between the respective bar members.

As shown in fig. 3: when the frame 1 is converted from the unfolded state to the folded state, the push handle bar 16 is rotated towards the direction close to the seat bar 13 to drive the seat bar 13 to extend, the front pull rod 14 moves towards the direction close to the seat bar 13 and pulls the front support leg 11 to rotate towards the direction close to the seat bar 13, the rear pull rod 15 moves towards the direction close to the seat bar 13 and pulls the rear support leg 12 to rotate towards the direction close to the rear seat bar 132, and the folding of the whole vehicle is realized as shown in fig. 4. The upper connecting rod 17 is rotatably matched with the push handle rod 16, so that the push handle rod 16 can drive the seat rod 13 to extend and retract more laborsavingly when rotating.

As for the seat post 13, the seat post 13 is used for connecting a seat (the seat is not shown in the drawing) for seating a child, the seat post 13 includes a front seat post 131 and a rear seat post 132, the front seat post 131 and the rear seat post 132 extend in the same length direction, the rear part of the front seat post 131 and the front part of the rear seat post 132 are slidably connected in the front-rear direction, and the seat post 13 is extended and retracted in the length direction thereof by the relative sliding of the front seat post 131 and the rear seat post 132. In this embodiment, the front portion of the rear seat rod 132 is sleeved on the rear portion of the front seat rod 131, and the rear seat rod 132 is used as an external rod sleeved member to provide a larger volume structure, so that the connection of the rods is more stable, and the limitation of the relative sliding between the rear seat rod 132 and the front seat rod 131 caused by the simultaneous pivotal connection of the front pull rod 14, the rear pull rod 15 and the push handle rod 16 on the rear seat rod 132 can be avoided as much as possible. Specifically, the front end of the front seat lever 131 is pivotally connected to the upper end of the front leg 11, and the rear end of the rear seat lever 132 is pivotally connected to the upper end of the rear link 15 and the lower end of the handle bar 16, respectively.

The seat post 13 in this embodiment further includes an inner seat post 133, the inner seat post 133 is at least partially disposed inside the rear seat post 132, the length extending direction of the inner seat post 133 is the same as that of the front seat post 131 and the rear seat post 132, the rear end of the inner seat post 133 is fixedly connected with the rear end of the rear seat post 132, the front seat post 131 is slidably sleeved outside the inner seat post 133, and the rear end of the front seat post 131 slides into the rear seat post 132 when the frame 1 is in the unfolded state. Specifically, the rear end of the inner seat rod 133 is fixedly connected to the rear end of the rear seat rod 132, the front end of the inner seat rod 133 extends out of the front end of the rear seat rod 132 and into the front seat rod 131, a gap is left between the rear seat rod 132 and the inner seat rod 133, and the front seat rod 131 slides relative to the rear seat rod 132 and the inner seat rod 133, so that the length of the seat rod 13 can be reduced. As shown in fig. 5, when the frame 11 is in the deployed state, the rear end portion of the front seat lever 131 abuts against the rear end portion inside the rear seat lever 132, and the front end portion of the inner seat lever 133 abuts against the front end portion inside the front seat lever 131; as shown in fig. 6, when the frame 1 is in the folded state, the rear end of the front seat post 131 extends from the rear seat post 132 and is only sleeved on the inner seat post 133. By providing the inner seat post 133, the fitting length of the rear seat post 132 and the front seat post 13 in relative sliding can be increased, which is advantageous for folding the vehicle frame 1. In another embodiment, the inner seat post 133 may not be provided, and the front seat post 131 and the rear seat post 132 may be telescopically coupled by being directly sleeved.

With respect to the front link 14, the front end of the front link 14 is pivotally connected to the front leg 11, and the rear end of the front link 14 is pivotally connected to the rear seat post 132. The position of the rotating shaft of the front pull rod 14 pivotally connected to the front leg 11 on the front leg 11 is located below the rotating shaft of at least one of the rear leg 12, the front seat post 131, and the upper link 17 pivotally connected to the front leg 11 (i.e., the rotating shaft of the upper end of the front leg 11 for rotating it toward the seat post 13), so that the front leg 11 can be pulled by the front pull rod 14. More preferably, the front end of the front rod 14 is connected to the lower position of the middle part of the front leg 11, so that the rotating arm of the front leg 11 pulled by the front rod 14 is larger, the labor is saved, the whole rigidity of the frame 1 can be improved, meanwhile, the rotating shaft of the pivot connection is prevented from being too close to the connection point of the front leg 11 and the front wheel assembly 2, and the mutual influence of the folded structural positions of the frame 1 is prevented. The rear end portion of the front link 14 may be attached to any position in the front-rear direction of the rear seat link 132. In the present embodiment, in order to make the structure more compact and save the production cost, the rear end portion of the front link 14 is connected to the front end portion of the rear seat link 132, and in order to facilitate folding, the rear end portion of the front link 14 is connected to the inside of the front end portion of the rear seat link 132.

With respect to the rear link 15, the upper end portion of the rear link 15 is pivotally connected to the rear seat link 132, and the lower end portion of the rear link 15 is pivotally connected to the rear leg 12. Specifically, the upper end portion of the rear link 15 is connected to the rear end portion of the rear seat link 132, and when the frame 1 is in the deployed state, the connection position of the rear link 15 to the rear seat link 132 is delayed as much as possible, so that the rear link 15 can be made as vertical as possible in the deployed state to provide support in the vertical direction. The position of the rotating shaft of the lower end part of the rear pull rod 15 pivotally connected with the rear leg 12 is located above the connecting point of the rear wheel assembly 3 and the rear leg 12 on the rear leg 12, and the connecting point of the lower end part of the rear pull rod 15 on the rear leg 12 is specifically located at a position lower than the middle part of the rear leg 12, which is helpful to make the structure of the frame 1 more stable when the frame 1 is in the unfolding state.

As for the upper link 17, a front end portion of the upper link 17 is pivotally connected to an upper end portion of the rear leg 12, a rear end portion of the upper link 17 is pivotally connected to the push lever 16, and the upper link 17 extends in an arc shape which protrudes upward and can serve as an armrest for a child when seated.

For the handle bar 16, the lower portion of the handle bar 16 is pivotally connected to the backseat lever 132. Specifically, the lower end portion of the push lever 16 is connected to the rear end portion of the rear seat lever 132. During folding, the rotating push handle rod 16 drives the front seat rod 131 and the rear seat rod 132 to slide relatively, the push handle rod 16 is provided with a control part of a locking mechanism, the locking mechanism can be arranged between any two rod pieces (the locking mechanism and the control part are not shown in the attached figures) of the frame 1, which can move relatively during folding, when the locking mechanism is locked, the frame 1 is kept in an unfolded state, and after the locking mechanism is unlocked, the push handle rod 16 can be rotated to enable the frame 1 to be converted into a folded state. Preferably, the push handle lever 16 includes an upper push handle lever 161 and a lower push handle lever 162, a lower end portion of the upper push handle lever 161 is pivotally connected to an upper end portion of the lower push handle lever 162, a lower end portion of the lower push handle lever 162 is pivotally connected to a rear end portion of the rear seat lever 132, and the volume of the folded frame 1 is further reduced by folding the push handle lever 16. In the present embodiment, the rear end of the backseat rod 132, the upper end of the rear pull rod 15, and the lower end of the lower push rod 162 are coaxially connected, and the same method as above can be adopted. The rear end of the upper link 17 is pivotally connected to the lower handle bar 162, and the pivotal connection between the rear end of the upper link 17 and the lower handle bar 162 is located in the middle of the lower handle bar 162, so that the front seat bar 131 and the rear seat bar 132 can slide relatively more easily by rotating the handle bar 16, and the overall structure of the frame 1 is more compact.

As shown in fig. 1, the frame 1 further includes a front cross link 41, a rear upper cross link 42, and a rear lower cross link 43, the front cross link 41 is connected between the front legs 11 on the left and right sides, a connection point of the front cross link 41 on the front leg 11 is located below a connection point of the front tie bar 14 on the front leg 11, the rear upper cross link 42 is connected between the rear seat bars 132 on the left and right sides, the rear upper cross link 42 is connected inside a rear end portion of the rear seat bar 132, the rear lower cross link 43 is connected between the rear tie bars 15 on the left and right sides, and the rear lower cross link 43 is connected inside a lower end portion of the rear tie bar 15. The upper ends of the left and right push-up lever 161 are connected to each other, and the left and right push-up lever 161 are integrally provided to form a U-shaped lever.

In the present embodiment, as shown in fig. 1 and 2, when the stroller is in the unfolded state, the front leg 11, the front rod 14, the upper link 17, and the push handle bar 16 extend obliquely upward from front to rear, the rear leg 12 and the rear rod 15 extend obliquely downward from front to rear, the front seat bar 131 and the rear seat bar 132 extend substantially in the horizontal direction, and the upper push handle bar 161 and the lower push handle bar 162 extend substantially in the same linear direction.

The folding process of the children's barrow is as follows: as shown in fig. 3, the control part of the locking mechanism on the push handle lever 16 is operated to unlock the locking mechanism, the upper push handle lever 161 is turned around the pivot of the lower end portion thereof to fold the push handle lever 16, the lower push handle lever 162 is turned around the pivot of the lower end portion of the lower push handle lever 162 in the direction of approaching the seat lever 13, the front seat lever 131 and the rear seat lever 132 are driven to slide in the direction of moving away from each other (extending the seat lever 13), the upper link 17 is rotated around the pivot of the front end portion thereof to approach the seat lever 13 while the lower push handle lever 162 is turned, and the rear seat lever 132 slides backward relative to the front seat lever 131 to drive the front pull rod 14, the rear pull rod 15, the front leg 11 and the rear leg 12 to approach the seat lever 13 until the respective lever members constituting the frame 1 are closely approached together, and finally folded as shown in fig. 4. The folded baby stroller has compact structure, small volume, small occupied space size and convenient carrying and storage. The unfolding process of the stroller is to rotate the push-handle bar 16 in the opposite direction to unfold the push-handle bar together with the rods.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.

Claims (10)

1. The utility model provides a children's shallow, includes the frame that has expansion state and fold condition, locates the front wheel subassembly and the rear wheel subassembly of frame lower part, its characterized in that: the frame include:

the front wheel assembly is arranged at the lower part of the front supporting leg;

the rear wheel assembly is arranged at the lower part of the rear supporting leg;

the seat rod is used for connecting a seat for a child to sit on, the seat rod comprises a front seat rod and a rear seat rod, and the rear part of the front seat rod is connected with the front part of the rear seat rod in a sliding mode along the front-back direction;

the front end part of the front pull rod is connected with the front supporting leg pivot, and the rear end part of the front pull rod is connected with the rear seat rod pivot;

the lower end part of the rear pull rod is connected with the rear support leg through a pivot;

the push handle rod, the lower part of the push handle rod, the backseat rod and the upper end part of the rear pull rod, wherein one part is pivotally connected with the other part, the third part is also pivotally connected with one part of the other two parts, or the lower part of the push handle rod, the backseat rod and the upper end part of the rear pull rod are pivotally connected together;

the rear end part of the upper connecting rod is pivotally connected with the push handle rod, two of the four parts of the front end part of the upper connecting rod, the upper end part of the rear supporting leg, the upper end part of the front supporting leg and the front end part of the front seat rod are pivotally connected, the third part is pivotally connected with one of the first two parts, the fourth part is pivotally connected with one of the first three parts, or any three of the four parts are pivotally connected together, and the rest part is pivotally connected with any one of the first three parts, or the four parts are pivotally connected together.

2. The stroller of claim 1, wherein: the seat post further comprises an inner seat post, at least part of the inner seat post is arranged in the rear seat post, the rear end part of the inner seat post is fixedly connected with the rear end part of the rear seat post, the front seat post is slidably sleeved outside the inner seat post, and the rear end part of the front seat post slides into the rear seat post when the frame is in an unfolded state.

3. The stroller of claim 1, wherein: the front end part of the front pull rod is connected with the middle part of the front supporting leg.

4. The stroller of claim 1, wherein: the upper end part of the rear pull rod is connected with the rear end part of the rear seat rod.

5. The stroller of claim 1, wherein: the lower end part of the push handle rod is connected with the rear end part of the backseat rod.

6. The stroller of claim 1, wherein: the rear end part of the backseat rod, the upper end part of the rear pull rod and the lower end part of the push handle rod are coaxially connected.

7. The stroller of claim 1, wherein: the upper end part of the front supporting leg, the upper end part of the rear supporting leg, the front end part of the front seat rod and the front end part of the upper connecting rod are coaxially connected.

8. The stroller of claim 1, wherein: the push handle rod comprises an upper push handle rod and a lower push handle rod, the lower end part of the upper push handle rod is in pivot connection with the upper end part of the lower push handle rod, the lower part of the lower push handle rod is in pivot connection with the rear end part of the rear seat rod, and the rear end part of the upper connecting rod is in pivot connection with the lower push handle rod.

9. The stroller of claim 8, wherein: the connection point of the upper connecting rod on the lower push handle rod is positioned in the middle of the lower push handle rod.

10. The stroller of claim 1, wherein: the lower end part of the rear pull rod and the rear supporting leg are pivotally connected to the lower position of the middle part of the rear supporting leg.

Images