CN217892955U - Children's barrow - Google Patents

Abstract

The utility model relates to a children's shallow, including frame, front wheel subassembly and the rear wheel subassembly that has expansion, fold condition, the frame includes: a front leg; the rear support leg comprises a lower rear support leg and an upper rear support leg, wherein the lower part of the upper rear support leg is connected with the upper part of the lower rear support leg in a sliding manner along the length extending direction of the rear support leg; 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 manner along the front-back direction; a front pull rod with the front end part pivotally connected with the front supporting leg and the rear end part pivotally connected with the rear seat rod; the upper end part of the first rear pull rod is connected with the rear seat rod, and the lower end part of the first rear pull rod is connected with the lower rear supporting leg through a pivot; the upper end part of the second rear pull rod is connected with the front seat rod, and the lower end part of the second rear pull rod is connected with the first rear pull rod through a pivot; a push handle rod with the lower part pivotally connected with the backseat rod; the front end part of the upper connecting rod is pivotally connected with the upper end parts of the upper rear supporting legs, the front end part of the front seat rod, the upper end part of the front supporting leg and the rear end part of the upper connecting rod are pivotally connected with the push handle rod. The utility model discloses a folding convenient operation of children's shallow makes things convenient for the use of children's shallow.

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 child stroller plays an important role in carrying infants in daily life, 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. And the volume is great after current children's shallow folding, inconvenient depositing.

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 support legs comprise lower rear support legs and upper rear support legs, the rear wheel assemblies are arranged at the lower parts of the lower rear support legs, and the lower parts of the upper rear support legs are connected with the upper parts of the lower rear support legs in a sliding mode along the length extending direction of the rear support legs;

the seat rod is used for connecting a seat for a child to sit on, and comprises a front seat rod and a rear seat rod, 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 upper end part of the upper rear leg, the front end part of the front seat rod and the upper end part of the front 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 first rear pull rod is pivoted with the lower rear supporting leg;

the upper end part of the second rear pull rod is connected with the front seat rod through a pivot, and the lower end part of the second rear pull rod is connected with the first rear pull rod through a pivot;

the push handle rod comprises a lower part, a rear seat rod and an upper end part of the first rear pull rod, wherein one of the three parts is pivotally connected with the other part, and the third part is also pivotally connected with one of the other two parts, or the three parts of the lower part, the rear seat rod and the upper end part of the first 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 upper 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 upper portion of the lower rear leg is sleeved on the lower portion of the upper rear leg, and the lower rear leg is used as an external loop bar member to provide a larger volume structure and provide a stronger support, which may cause the rear leg to break if the upper rear leg is used as an external loop bar member.

Preferably, the upper ends of the upper rear legs are pivotally connected to the front end of the front seat post and the upper ends of the front legs, respectively.

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 rear seat post is provided with a strip-shaped groove extending along the front-rear direction, when the frame is changed between the unfolded state and the folded state, the upper end part of the second rear pull rod and the rotating shaft connected with the pivot of the front seat post slide in the strip-shaped groove, so that the distance from the front end part to the rear end part of the seat post is reduced as much as possible when the frame is in the unfolded state while the front seat post and the rear seat post keep enough length, and the whole structure is more compact and flexible.

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 labor is saved, meanwhile, the pivot connection point is prevented from being too close to the connection point of the front support leg 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 first rear pull rod is connected to the rear end of the rear seat rod, and when the frame is in the unfolded state, the connecting position of the first rear pull rod on the rear seat rod is delayed as far as possible, so that the first rear pull rod can be vertical as far as possible in the unfolded state to provide vertical support.

Preferably, the lower end of the push handle rod is connected to the rear end of the backseat rod.

Preferably, the rear end part of the backseat rod, the upper end part of the first rear pull rod and the lower end part of the push handle rod are coaxially connected.

Preferably, the pivot connection between the lower end of the second rear pull rod and the first rear pull rod is located in the middle of the first rear pull rod, and when the frame is operated to switch between the unfolded state and the folded state, the balance between the length of the telescopic distance of the lower rear leg relative to the upper rear leg when sliding and the size of the control force is achieved.

Preferably, the upper end part of the front leg, the upper end part of the upper rear leg, the front end part of the front seat rod and the front end part of the upper connecting rod are coaxially connected.

Preferably, 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 pivoted with the upper end part of the lower push handle rod, the lower part of the lower push handle rod is pivoted with the rear end part of the rear seat rod, the rear end part of the upper connecting rod is pivoted with the lower push handle rod, the pivot joint of the rear end part of the upper connecting rod and the lower push handle rod is positioned in the middle of the lower push handle rod, the front seat rod and the rear seat rod can slide relatively by rotating the push handle rod, labor is saved, and the overall structure of the frame is more compact and smaller.

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

the utility model discloses, the preceding landing leg of children's shallow, the back landing leg, the seat pole, main part bearing structure such as push handle pole passes through the front pull rod, first back pull rod, the linkage each other is realized to the pull rod behind the second, only need the front seat pole of relative slip, the folding and the expansion of frame can be realized to the back seat pole, make preceding landing leg, the back landing leg is drawn close to the seat pole, realize rotating push handle pole through push handle pole and the connection of back seat pole and drive the front seat pole, the relative slip of back seat pole, realize the whole car linkage, the cooperation of utilizing pull rod behind the second and first back pull rod makes back landing leg, flexible slip is realized to back landing leg down, make the volume after the frame is folding more small and exquisite. The folding operation of this children's shallow is convenient, makes things convenient for children's shallow's use.

Drawings

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

FIG. 2 is a schematic perspective view of the stroller in the present embodiment during folding and unfolding of the frame;

fig. 3 is a perspective view of the stroller in the folded state of the frame in the present embodiment;

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

FIG. 5 is a side view of the stroller of this embodiment shown during folding and unfolding of the frame;

FIG. 6 is a side view of the stroller in the collapsed configuration of the frame of the present embodiment;

FIG. 7 is an axial cross-sectional view of the seat post in the deployed condition of the frame in this embodiment;

fig. 8 is an 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; 121. a lower rear leg; 122. mounting a rear supporting leg; 13. a seat post; 131. a front seat post; 132. a rear seat post; 1321. a strip-shaped groove; 133. an inner seat post; 14. a front pull rod; 15. a first rear pull rod; 16. a second rear pull rod; 161. a rotating shaft; 17. a handle pushing rod; 171. pushing the handle rod upwards; 172. a lower push rod; 18. 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 solutions of the present invention will be described more clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments of the present invention, not all embodiments. 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 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.

In the description of the present invention, it should be noted that "pivot connection" herein refers to a plurality of components connected by a rotation shaft, and the connected components can rotate around the rotation 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. 4 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 6, the stroller includes a frame 1 having an unfolded state and a folded state, a front wheel assembly 2 provided at a front lower portion of the frame 1, and a rear wheel assembly 3 provided at a rear lower portion of the frame 1. The frame 1 is basically arranged in bilateral symmetry, and the lower parts of the frame 1 at two sides are provided with a front wheel component 2 and a rear wheel component 3. In the present embodiment, only the frame 1 on one side is described, and the frames on the other side have the same structure and connection relationship. Wherein:

the frame 1 comprises a front leg 11, a rear leg 12, a seat rod 13, a front pull rod 14, a first rear pull rod 15, a second rear pull rod 16, a push handle rod 17 and an upper connecting rod 18. Wherein the front wheel assembly 2 is disposed at a lower portion of the front leg 11 and the rear wheel assembly 3 is disposed at a lower portion of the rear leg 12. When the frame 1 is in an unfolded state, the front leg 11 extends from bottom to top obliquely and backwards, the rear leg 12 extends from bottom to top obliquely and forwards, the rear leg 12 can stretch, the seat rod 13 and the upper connecting rod 18 both extend approximately along the front-back direction, the seat rod 13 can stretch approximately, the first rear pull rod 15 and the push handle rod 17 both extend approximately along the up-down direction, and the second rear pull rod 16 extends from bottom to top obliquely and forwards.

As shown in fig. 1 and 4, when the vehicle body frame 1 is in the unfolded state, the front end portion of the upper link 18, the upper end portion of the upper rear leg 122, the upper end portion of the front leg 11, and the front end portion of the front seat bar 131 are pivotally connected to two 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 portion of the front leg 11, the upper end portion of the upper rear leg 122, the front end portion of the front seat rod 131, and the front end portion of the upper link 18 are coaxially connected, or the upper end portion of the upper rear leg 122 may be pivotally connected to three other rod members (the three other rod members refer to the front leg 11, the front seat rod 131, and the upper link 18) through two or more 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. 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 with the front support leg 11, the rear end of the front pull rod 14 is pivotally connected with the seat post 13, one of the three components of the lower end of the push handle rod 17, the rear seat post 132 and the upper end of the first rear pull rod 15 is pivotally connected with the other component, the third component is also pivotally connected with one of the other two components, or the three components of the lower end of the push handle rod 17, the rear seat post 132 and the upper end of the first 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 first rear pull rod 15, and the lower end of the push handle rod 17 are coaxially connected. Specifically, the rear end of the rear seat lever 132 is positioned innermost, the upper end of the first rear link 15 is positioned outside the rear end of the rear seat lever 132, and the lower end of the push lever 17 is positioned outside the upper end of the first rear link 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 first rear pull rod 15 and the push handle rod 17) 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 first rear pull rod 15 is pivotally connected to the rear leg 12, the upper end of the second rear pull rod 16 is pivotally connected to the seat bar 13, the rear end of the second rear pull rod 16 is pivotally connected to the first rear pull rod 15, the rear end of the upper link 18 is pivotally connected to the push handle bar 17, and the entire folding and unfolding of the frame 1 is achieved by the linkage between the respective members.

As shown in fig. 2 and 5: when the frame 1 is converted from the unfolded state to the folded state, the push handle rod 17 is rotated towards the direction close to the seat rod 13 to drive the seat rod 13 to extend, the front pull rod 14 moves towards the direction close to the seat rod 13 and pulls the front support leg 11 to rotate towards the direction close to the seat rod 13, the first rear pull rod 15 moves towards the direction close to the seat rod 13 and pulls the rear support leg 12 to rotate towards the direction close to the rear seat rod 132, and the second rear pull rod 16 moves towards the direction close to the seat rod 13 and is matched with the first rear pull rod 15 to enable the rear support leg 12 to contract, so that the folding of the whole vehicle is realized as shown in fig. 3 and 6. The upper connecting rod 18 is rotatably matched with the push handle rod 17, so that the push handle rod 17 can drive the seat rod 13 to extend and retract more laborsavingly when rotating.

The upper end of the front leg 11 is pivotally connected to at least one of the upper end of the rear leg 12, the front end of the seat bar 13, and the front end of the upper link 18, and the upper end of the front leg 11 is pivotally connected to the upper end of the rear leg 12, the front end of the seat bar 13, and the front end of the upper link 18.

For the rear leg 12, the rear leg 12 includes a lower rear leg 121 and an upper rear leg 122, the length extending direction of the upper rear leg 122 is the same as that of the lower rear leg 121, the lower part of the upper rear leg 122 is connected with the upper part of the lower rear leg 121 in a sliding manner along the length extending direction of the rear leg 12, and the rear leg 12 is extended and retracted in the length direction thereof by the relative sliding of the upper rear leg 122 and the lower rear leg 121. In this embodiment, the upper portion of the lower rear leg 121 is sleeved on the lower portion of the upper rear leg 122, the lower rear leg 121 is used as an external sleeve rod to provide a larger volume structure, which can provide a stronger support without affecting the folding, and if the upper rear leg 122 is an external sleeve rod, the rear leg 12 may be broken in daily use of the stroller, but this embodiment does not exclude the case where the lower portion of the upper rear leg 122 is sleeved on the upper portion of the lower rear leg 121.

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 length extension direction of the front seat post 131 is the same as that of the rear seat post 132, the rear part of the front seat post 131 is slidably connected with the front part of the rear seat post 132 in the front-rear direction, and the seat post 13 is extended and contracted 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 first rear pull rod 15 and the push handle rod 17 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 first rear link 15 and the lower end of the handle bar 17, respectively.

The seat post in this embodiment further includes an inner seat post 133, the inner seat post 133 is at least partially disposed in 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. 7, when the frame 1 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. 8, 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. Through setting up interior pole 133, can increase the sliding fit length of back seat pole 132 and front seat pole 131, be favorable to frame 1's folding. In other embodiments, the inner seat post 133 may not be provided, and the front seat post 131 and the rear seat post 132 are 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 pivot shaft of the front link 14 pivotally connected to the front leg 11 on the front leg 11 is located below the pivot shaft of at least any one of the upper rear leg 122, the front seat lever 131, and the upper link 18 pivotally connected to the front leg 11 (i.e., the pivot shaft of the upper end of the front leg 11 for pivoting toward the seat lever 13), so that the front leg 11 can be pulled by the front link 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 connected 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.

As for the first rear link 15, the upper end portion of the first rear link 15 is pivotally connected to the rear seat bar 132, and the lower end portion of the first rear link 15 is pivotally connected to the lower rear leg 121. Specifically, the upper end of the first rear tie rod 15 is connected to the rear end of the rear seat rod 132, and when the frame 1 is in the unfolded state, the connecting position of the first rear tie rod 15 on the rear seat rod 132 is delayed as far as possible, so that the first rear tie rod 15 can be made as vertical as possible in the unfolded state to provide support in the vertical direction. The position of the rotating shaft of the lower end part of the first rear pull rod 15 pivotally connected with the lower rear support leg 121 on the lower rear support leg 121 is above the connecting point of the rear wheel assembly 3 and the lower rear support leg 121, and the connecting point of the lower end part of the first rear pull rod 15 on the lower rear support leg 121 is specifically positioned at a lower position in the middle of the lower rear support leg 121, which helps to stabilize the structure of the frame 1 when the frame 1 is in the unfolded state.

As for the second rear link 16, the upper end portion of the second rear link 16 is pivotally connected to the front seat link 131, and the lower end portion of the second rear link 16 is pivotally connected to the first rear link 15. Specifically, the upper end of the second rear pull rod 16 is pivotally connected to the rear portion of the front seat rod 131, and the rear seat rod 132 is provided with a strip-shaped groove 1321 extending in the front-rear direction, so that when the frame 1 is changed between the unfolded state and the folded state, the upper end of the second rear pull rod 16 and the rotating shaft 161 pivotally connected to the front seat rod 131 slide in the strip-shaped groove 1321, so that the distance from the front end to the rear end of the seat rod 13 is reduced as much as possible when the frame 1 is in the unfolded state while the front seat rod 131 and the rear seat rod 132 are kept at a sufficient length, and the overall structure is more compact and flexible. The position of the pivot shaft of the lower end of the second rear link 16 pivotally connected to the first rear link 15 on the first rear link 15 is above the pivot shaft of the lower rear leg 121 pivotally connected to the first rear link 15. More preferably, the pivot connection between the lower end of the second rear pull rod 16 and the first rear pull rod 15 is located in the middle of the first rear pull rod 15, so that the telescopic distance between the lower rear leg 121 and the upper rear leg 122 is balanced with the operation force when the operation frame 1 is switched between the unfolded state and the folded state.

As for the upper link 18, the front end portion of the upper link 18 is pivotally connected to the upper end portion of the upper rear leg 122, the rear end portion of the upper link 18 is pivotally connected to the push lever 17, and the upper link 18 extends in an arc shape which protrudes upward and can serve as an armrest for a child when seated.

For the handle bar 17, the lower portion of the handle bar 17 is pivotally connected to the backseat lever 132. Specifically, the lower end portion of the push lever 17 is connected to the rear end portion of the rear seat lever 132. During the folding process, the rotating push handle rod 17 drives the front seat rod 131 and the rear seat rod 132 to slide relatively, the push handle rod 17 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 the folding process, when the locking mechanism is locked, the frame 1 is kept in the unfolding state, and after the locking mechanism is unlocked, the push handle rod 17 can be rotated to enable the frame 1 to be converted into the folding state. Preferably, the push handle lever 17 includes an upper push handle lever 171 and a lower push handle lever 172, a lower end portion of the upper push handle lever 171 is pivotally connected to an upper end portion of the lower push handle lever 172, a lower end portion of the lower push handle lever 172 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 17. In the present embodiment, the rear end of the backseat rod 132, the upper end of the first rear pull rod 15, and the lower end of the push handle rod 17 are coaxially connected, and the same methods can be adopted. The rear end of the upper link 18 is pivotally connected to the lower handle bar 172, the pivotal connection between the rear end of the upper link 18 and the lower handle bar 172 is located in the middle of the lower handle bar 172, and the front seat bar 131 and the rear seat bar 132 are relatively slid by rotating the push handle bar 17 with less effort, and the overall structure of the frame 1 is more compact.

As shown in fig. 1 to 3, 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 first 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 first rear tie bar 15. The upper ends of the left and right push-up levers 171 are connected to each other, and the left and right push-up levers 171 are integrally provided to form a U-shaped lever.

In the present embodiment, as shown in fig. 1 and 4, when the stroller is in the unfolded state, the front leg 11, the front pull rod 14, the upper link 18, and the push handle 17 extend obliquely upward from front to rear, the rear leg 12, the first rear pull rod 15, and the second rear pull rod 16 extend obliquely downward from front to rear, the front seat rod 131 and the rear seat rod 132 extend substantially in the horizontal direction, and the upper push handle 171 and the lower push handle 172 extend substantially in the same linear direction.

The folding process of the baby stroller is as follows: as shown in fig. 2 and 5, the control part of the locking mechanism on the push handle bar 17 is operated to unlock the locking mechanism, the upper push handle bar 171 is turned around the pivot of the lower end part thereof to fold the push handle bar 17, the lower push handle bar 172 is turned around the pivot of the lower end part of the lower push handle bar 172 in the direction of closing the seat bar 13 to slide the front seat bar 131 and the rear seat bar 132 in the direction of moving away from each other (extension of the seat bar 13), the upper link 18 is turned around the pivot of the front end part thereof to close the upper link 18 to the seat bar 13 while the lower push handle bar 172 is turned, the rear seat bar 132 is slid backward relative to the front seat bar 131 to drive the front stay 14, the first rear stay 15, the front leg 11 and the rear leg 12 to close the seat bar 13, the first rear stay 15 is restricted by the second rear stay 16 while moving, the first rear stay 15 is turned around the pivot thereof with the second rear stay 16 to shorten the lower rear leg 121 and the upper rear leg 122 (rear leg 12) until the respective bar members constituting 1 are closed together, and finally folded together as shown in fig. 3 and 6. The folded baby stroller has compact structure, small volume, small occupied space size and convenient carrying and storage. The unfolding process of the baby stroller is to rotate the push handle rod 17 in the reverse direction to link the push handle rod and unfold the push handle rod together with the rod pieces.

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 (11)

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 support legs comprise lower rear support legs and upper rear support legs, the rear wheel assemblies are arranged at the lower parts of the lower rear support legs, and the lower parts of the upper rear support legs are connected with the upper parts of the lower rear support legs in a sliding mode along the length extending direction of the rear support legs;

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 first rear pull rod is pivoted with the lower rear supporting leg;

the upper end part of the second rear pull rod is connected with the front seat rod through a pivot, and the lower end part of the second rear pull rod is connected with the first rear pull rod through a pivot;

the push handle rod comprises a lower part, a rear seat rod and an upper end part of the first rear pull rod, wherein one of the three parts is pivotally connected with the other part, and the third part is also pivotally connected with one of the other two parts, or the three parts of the lower part, the rear seat rod and the upper end part of the first 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 upper 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 upper part of the lower rear supporting leg is sleeved on the lower part of the upper rear supporting leg.

3. 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.

4. The stroller of claim 1, wherein: the rear seat rod is provided with a strip-shaped groove extending along the front-back direction, and when the frame is changed between an unfolded state and a folded state, the upper end part of the second rear pull rod and a rotating shaft connected with the front seat rod through a pivot are arranged in the strip-shaped groove to slide.

5. 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.

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

7. 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.

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

9. The stroller of claim 1, wherein: the pivot connection position of the lower end part of the second rear pull rod and the first rear pull rod is positioned in the middle of the first rear pull rod.

10. The stroller of claim 1, wherein: the upper end part of the front supporting leg, the upper end part of the upper 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.

11. 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, the rear end part of the upper connecting rod is in pivot connection with the lower push handle rod, and the pivot connection position of the rear end part of the upper connecting rod and the lower push handle rod is located in the middle of the lower push handle rod.

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