CN119190163A

CN119190163A - A child stroller

Info

Publication number: CN119190163A
Application number: CN202410834445.3A
Authority: CN
Inventors: 李照国; 高翔
Original assignee: Goodbaby Child Products Co Ltd
Current assignee: Goodbaby Child Products Co Ltd
Priority date: 2024-06-26
Filing date: 2024-06-26
Publication date: 2024-12-27
Also published as: WO2026001711A1

Abstract

The invention discloses a child stroller, which comprises a stroller frame with an unfolding state and a folding state, wherein the stroller frame comprises a front support, a rear support and a push rod, two of the front support, the rear support and the push rod are rotationally connected, a third person is rotationally connected with any one of the front support, the rear support and the push rod, or the three are coaxially rotationally connected, the child stroller comprises a seat and a linkage mechanism, the seat is arranged on the linkage mechanism, and the linkage mechanism is connected with the push rod, so that the seat is driven to move backwards and towards the direction close to the front support when the child stroller is folded and the push rod rotates. The child stroller is convenient to fold and operate, and has a compact structure and a small size after being folded.

Description

Child cart

Technical Field

The invention relates to the technical field of children products, in particular to a child trolley.

Background

Child strollers are typically used when carrying a child out. In order to facilitate carrying and storage of the child stroller, the child stroller can be folded generally. The stroller generally comprises a stroller frame and a seat mechanism arranged on the stroller frame, and when the structures of the stroller frames are different or the arrangement modes of the seat mechanism on the stroller frame are different, the folding operation modes and the folded structure volumes of the stroller are different. In the prior art, part of the children's barrows have the problems of inconvenient folding operation, large structural volume after folding and inconvenient carrying and storage.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide a child stroller which is convenient to fold and operate and has a small structural size after being folded.

In order to achieve the above purpose, the invention adopts the following technical scheme:

The baby stroller comprises a stroller frame with an unfolding state and a folding state, wherein the stroller frame comprises a front bracket, a rear bracket and a push rod, two of the front bracket, the rear bracket and the push rod are rotationally connected, and a third one of the front bracket, the rear bracket and the push rod is rotationally connected with any one of the front bracket, the rear bracket and the push rod or the third one of the front bracket, the rear bracket and the push rod is coaxially rotationally connected with the other one; the baby carriage comprises a seat and a linkage mechanism, wherein the seat is arranged on the linkage mechanism, and the linkage mechanism is connected with the push rod, so that the seat is driven to move backwards and towards the direction close to the front support when the baby carriage is folded and the push rod rotates.

In some embodiments, the linkage comprises a push rod link, a front support link and a seat link, wherein one end part of the push rod link is rotationally connected with the push rod, the front support link is rotationally connected with the front support, and the seat is rotationally connected with the front support link;

In the deployed state, the seat supports the front bracket link and the seat link;

When in a folding state, the push rod is folded towards the rear support and drives the push rod connecting rod to move downwards, the push rod connecting rod drives the seat to turn backwards through the seat connecting rod and towards the front support to be folded, and the seat drives the front support connecting rod to be folded towards the front support.

In some embodiments, the front bracket link includes a first rod body and a second rod body, one ends of the first rod body and the second rod body intersect, and the seat is rotatably disposed on the second rod body;

In the unfolded state, the extending direction of the second rod body is intersected with the extending direction of the front support, and the second rod body, the front support and the seat form a triangular structure;

In the folded state, the second rod body rotates backwards and is closed and folded to the front bracket;

the other end part of the push rod connecting rod is directly or indirectly rotatably arranged on the front bracket connecting rod;

The first rod body and/or the second rod body are/is rotatably connected with the front support, the other end part of the first rod body is directly or indirectly rotatably connected with the push rod connecting rod, and the other end part of the second rod body is rotatably connected with the front part of the seat;

the first rod body integrally extends along the front-back direction, and the second rod body integrally extends along the up-down direction.

In some embodiments, in the deployed state, the direction of the extending arrangement of the push rod link is arranged intersecting the extending arrangement direction of the seat link and encloses a triangular structure with the seat;

the front support connecting rod and the rotating position of the seat are oppositely arranged at a position close to the front end of the seat, and the seat connecting rod and the rotating position of the seat are oppositely arranged at a position close to the rear end of the seat.

In some embodiments, the linkage further comprises a rear bracket link, one end of the rear bracket link is rotatably connected with the rear bracket, the other end of the push rod link is rotatably connected with the other end of the rear bracket link, and the front bracket link is rotatably connected with the rear bracket link;

on the rear support connecting rod, the rotating connection position of the push rod connecting rod and the rear support connecting rod is positioned in front of the rotating connection position of the front support connecting rod and the rear support connecting rod;

The cart frame also comprises a basket rod and a basket connecting rod, wherein the basket rod is rotationally connected with the rear support connecting rod, one end part of the basket connecting rod is rotationally connected with the basket rod, and the other end part of the basket connecting rod is rotationally connected with the rear support.

In some embodiments, the stroller further comprises a seat mechanism and a backrest, the seat mechanism comprises a seat, the backrest is rotatably arranged relative to the seat, the joint of the seat and the backrest moves downwards when the seat is folded to move backwards, the backrest is of a split structure, the backrest comprises a plurality of unit backrests, the plurality of unit backrests are sequentially arranged along the height direction of the backrest, and one end of each two adjacent unit backrests are rotatably or slidably connected.

In some embodiments, the cart frame further comprises a push handle rotatably connected to the push rod;

The stroller further comprises a first locking mechanism disposed on the stroller frame to lock the stroller frame in a deployed state;

The child stroller further comprises a third linkage mechanism which is respectively connected or matched with the push handle and the first locking mechanism so as to drive the first locking mechanism to unlock from a locking state when the push handle rotates and approaches to the push rod.

In some embodiments, the first locking mechanism includes a first locking member movably disposed on one of the front bracket or the rear bracket and the push rod and a first locking slot disposed on the other, the first locking member being detachably disposed in the first locking slot;

The third linkage mechanism comprises a first traction rope, one end part of the first traction rope is arranged on the first locking piece, and the other end part of the first traction rope is arranged on the push handle;

The other end part of the first traction rope is movably arranged on the push handle;

The third triple mechanism further comprises a fixed column, the other end part of the first traction rope is fixedly arranged on the fixed column, a first limiting groove is formed in the pushing handle and extends along the circumferential direction of the pushing handle relative to the rotation of the pushing rod, the first limiting groove is provided with two end parts which are oppositely arranged, the fixed column is arranged in the first limiting groove, when the cart frame is in an unfolding state or a folding state, a gap is reserved between the fixed column and at least one end part of the first limiting groove, when the pushing handle is folded or unfolded and rotates for an angle relative to the pushing rod, one end part of the first limiting groove is propped against the fixed column, so that the fixed column is driven to synchronously rotate in the same direction when the pushing handle rotates.

In some embodiments, a second limit groove is formed on the push rod, and the fixed column is movably arranged in the second limit groove;

When the cart frame is in an unfolding state or a folding state, the fixing column is respectively propped against one of the two end parts of the first limiting groove and one of the two end parts of the second limiting groove, and the end parts of the first limiting groove and the second limiting groove are respectively positioned on two opposite sides of the fixing column.

In some embodiments, the stroller further comprises a second locking mechanism disposed between the push rod and the push handle to lock the relative positions of the two;

The second locking mechanism comprises a second locking piece movably arranged on one of the push rod and the push handle and a second locking groove arranged on the other, and the second locking piece is detachably arranged in the second locking groove;

And/or the second locking grooves are arranged on the push rod or the push handle along the circumferential direction of the rotation of the push handle, the second locking piece is positioned in one second locking groove when the child stroller is in an unfolding state, and the second locking piece is positioned in the other second locking groove when the child stroller is in a folding state.

Due to the application of the technical scheme, the folding child stroller has the advantages that when the push rod rotates during folding, the seat can be driven to move backwards through the linkage mechanism to be close to the front support, so that the folding operation of the child stroller is convenient, the folding child stroller is compact in structure and small in size, and the carrying and the storage of the child stroller are convenient.

Drawings

FIG. 1 is one of the perspective views (from the rear to the front) of the child stroller of the present embodiment in the unfolded state;

FIG. 2 is a second perspective view (from front to back) of the child stroller according to the present embodiment in an unfolded state;

FIG. 3 is a schematic side view of the stroller in an unfolded state;

FIG. 4 is an exploded view of the push rod and push handle of the stroller of the present embodiment;

FIG. 5 is a schematic view of a part of the push handle in the stroller according to the present embodiment;

FIG. 6 is a schematic cross-sectional view of the stroller in the unfolded state at the push rod and push handle (both the first and second locking mechanisms are in the locked state);

FIG. 7 is a schematic cross-sectional view of the stroller in the unfolded state at the push rod and push handle (the first locking mechanism in the locked state and the second locking mechanism in the unlocked state);

FIG. 8 is a schematic cross-sectional view of the stroller in a collapsed condition at the push rod and push handle (the first locking mechanism is in an unlocked condition and the second locking mechanism is in a locked condition);

FIG. 9 is a schematic cross-sectional view of the stroller in a collapsed condition at the push rod and push handle (with both the first and second locking mechanisms in an unlocked condition);

FIG. 10 is a schematic perspective view of the stroller in the folding process (after the push handle rotates and the push rod approaches);

FIG. 11 is a schematic side view of the stroller in the folding process (after the push handle rotates and the push rod approaches);

FIG. 12 is a schematic perspective view of the stroller (push rod rotated) during folding in accordance with the present embodiment;

FIG. 13 is a schematic side view of the child stroller of the present embodiment (push rod rotation) during folding;

Fig. 14 is a schematic perspective view of the stroller in a folded state according to the present embodiment;

FIG. 15 is a schematic side view of the stroller in a collapsed condition;

fig. 16 is a schematic cross-sectional view of the stroller of the present embodiment in a folded state.

The bicycle comprises a bicycle frame, a front bracket, 12, a rear bracket, 121, a connector, 122, a first locking groove, 13, a push rod, 131, a second locking groove, 132, a second limiting groove, 14, a front bracket connecting rod, 141, a first rod body, 142, a second rod body, 15, a rear bracket connecting rod, 16, a push rod connecting rod, 17, a basket rod, 18, a basket connecting rod, 19, a push handle, 191, a first limiting groove, 192, a guide post, 21, a seat, 22, a backrest, 31, a seat connecting rod, 401, a first shaft, 402, a second shaft, 403, a third shaft, 404, a fourth shaft, 405, a fifth shaft, 406, a sixth shaft, 407, a seventh shaft, 408, an eighth shaft, 409, a ninth shaft, 410, a tenth shaft, 411, an eleventh shaft, 412, a twelfth shaft, 5, a first locking piece, 6, a second locking piece, 61, a locking part, 62, a guide groove, 71, a first traction cable, 72, a fixed post, 81, an unlocking button, 82, a second wheel assembly, and a front wheel assembly.

Detailed Description

The technical scheme of the invention is further described below with reference to the attached drawings and specific embodiments.

In the following description, the directions of "front", "rear", "left", "right", "up", "down", etc. are referred to as "front" in the left direction in the drawing, "rear" in the right direction, the upper direction is "up", the lower direction is "down", and the directions perpendicular to the paper surface in the drawing are "left" and "right", respectively, according to fig. 3. The above directional definitions are merely provided to facilitate the description of the invention and to simplify the description and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operate in a particular orientation and are not to be construed as limiting the invention.

As shown in fig. 1 to 3, the child stroller of the present invention includes a stroller frame having an unfolded state and a folded state, a seat mechanism, a front wheel assembly 91 provided at a bottom front portion of the stroller frame, and a rear wheel assembly 92 provided at a bottom rear portion of the stroller frame.

The cart frame comprises a front bracket 11, a rear bracket 12 and a push rod 13. The front wheel assembly 91 is provided at a lower portion of the front bracket 11, and the rear wheel assembly 92 is provided at a lower portion of the rear bracket 12. Two of the front bracket 11, the rear bracket 12 and the push rod 13 are rotatably connected, and a third one is rotatably connected with any one of the above two or the above three are coaxially rotatably connected.

Specifically, as shown in fig. 1 to 3, the upper part of the rear bracket 12 has a joint 121, the upper part of the front bracket 11 is rotatably connected to the joint 121 through a first shaft 401, and the lower part of the push rod 13 is rotatably connected to the joint 121 through a second shaft 402.

The first shaft 401 and the second shaft 402 may be located at both ends of the joint 121, respectively, and the first shaft 401 is located below the second shaft 402. Alternatively, the first shaft 401 and the second shaft 402 may be coaxially disposed, both being located in the middle of the joint 121. Alternatively, the first shaft 401 may be located at the middle of the joint 121, and the second shaft 402 may be located at the upper end of the joint 121. Or with the first shaft 401 at the lower portion of the joint 121 and the second shaft 402 at the middle portion of the joint 121.

The seat mechanism includes a seat 21 and a backrest 22. The backrest 22 is rotatably provided with respect to the seat 21, and specifically, the lower portion of the backrest 22 may be directly rotatably connected to the rear portion of the seat 21, or the backrest 22 may be rotatably provided behind the seat 21 through a cloth cover. When the stroller is folded, the seat 21 and the backrest 22 are respectively rotated in the same or different directions to be close to the stroller frame.

The stroller further comprises a linkage mechanism, and the seat 21 is arranged on the linkage mechanism and connected with the push rod 13, so that the seat 21 can synchronously move close to or away from the stroller frame when the push rod 13 rotates in the folding or unfolding process of the stroller. In this embodiment, when the stroller is folded, the push rod 13 rotates to flip the seat 21 back and move in a direction to approach the front frame 11.

As shown in fig. 1 to 3, the linkage mechanism includes a front bracket link 14, a push rod link 16, and a seat link 31. One end of the push rod link 16 is rotatably connected to the push rod 13, and the other end of the push rod link 16 is directly or indirectly rotatably provided on the front bracket link 14. The front bracket link 14 is rotatably connected to the front bracket 11, and the seat 21 is rotatably connected to the front bracket link 11. One end of the seat link 31 is rotatably connected to the seat 21, and the other end of the seat link 31 is rotatably connected to the push rod link 14. When the push rod 13 rotates, the push rod link 16 is driven to act, the push rod link 16 is linked with the seat link 31, the seat 21 is driven to rotate through the seat link 31, and when the seat rotates, the front support link 14 is driven to rotate relative to the front support 11.

In this embodiment, as shown in fig. 1 to 3, the linkage mechanism further includes a rear bracket link 15, one end of the rear bracket link 15 is rotatably connected to the rear bracket 12, the other end of the push rod link 16 is rotatably connected to the other end of the rear bracket link 15, and the front bracket link 14 is rotatably connected to the rear bracket link 15. Thus, when the stroller is folded or unfolded, the push rod 13 can drive the front bracket 11 and the rear bracket 12 to rotate relatively through the linkage mechanism, so that the front bracket 11 and the rear bracket 12 are close to or far away from each other.

Specifically, as shown in fig. 1 to 3, the front bracket link 14 includes a first rod 141 and a second rod 142, and one ends of the first rod 141 and the second rod 142 intersect. When the stroller is in the unfolded state, the first rod 141 extends in the front-rear direction and the second rod 142 extends in the up-down direction. The first rod 141 and/or the second rod 142 are rotatably connected to the front bracket 11 via a third shaft 403, and in this embodiment, the intersection of the first rod 141 and the second rod 142 is rotatably connected to the front bracket 11 via the third shaft 403. The other end of the first rod body 141 is rotatably connected to the rear bracket link 15 through a fourth shaft 404, and the other end of the second rod body 142 is rotatably connected to the front of the seat 21 through an eleventh shaft 411.

One end of the rear bracket link 15 is rotatably connected to the rear bracket 12 through a fifth shaft 405. One end of the push rod link 16 is rotatably connected to the lower portion of the push rod 13 via a sixth shaft 406, and the other end of the push rod link 16 is rotatably connected to the other end of the rear bracket link 15 via a seventh shaft 407. One end of the seat link 31 is rotatably connected to the seat 21 via a twelfth shaft 412, and the other end of the seat link 31 is rotatably connected to the push rod link 16.

As shown in fig. 1 to 3, when the stroller is in the unfolded state, the front bracket link 14 and the rear bracket link 15 each extend in the front-rear direction, which is supported between the front bracket 11 and the rear bracket 12. On the rear bracket link 15, a seventh shaft 407, a fourth shaft 404, and a fifth shaft 405 are disposed in order from front to rear. The other end portion of the seat link 31, the rear bracket link 15, and the push rod link 16 are coaxially and rotatably connected by a seventh shaft 407.

Thus, a four-bar linkage is formed between the front frame 11, the rear frame 12, the rear frame link 15 and the front frame link 14, a four-bar linkage is formed between the rear frame 12, the push rod 13, the push rod link 16 and the rear frame link 15, and a four-bar linkage is formed between the seat 21, the front frame link 14, the rear frame link 15 and the seat link 31. When the push rod 13 rotates in the folding or unfolding process of the baby carriage, the push rod 16 and the rear support connecting rod 15 are driven to rotate by the four-bar linkage among the rear support 12, the push rod 13, the push rod connecting rod 16 and the rear support connecting rod 15, so that the front support 11 rotates relative to the rear support 12 by driving the front support connecting rod 14 to act by the four-bar linkage among the front support 11, the rear support 12, the rear support connecting rod 15 and the front support connecting rod 14. The seat 21 is driven to rotate by a four-bar linkage between the seat 21, the front support link 14, the rear support link 15 and the seat link 31.

As shown in fig. 1 to 3, the cart frame may further include a basket bar 17, and one end of the basket bar 17 is rotatably connected to the rear bracket link 15 through an eighth shaft 408. By providing the basket bar 17, a cloth cover may be provided on the basket bar 17 so as to be used for placing articles when the stroller is in use.

The cart frame further includes a basket link 18, one end of the basket link 18 is rotatably connected to the basket bar 17 through a ninth shaft 409, and the other end of the basket link 18 is rotatably connected to the rear bracket 12 through a tenth shaft 410. In this way, a four bar linkage is formed between the rear bracket 12, the rear bracket link 15, the basket bar 17 and the basket link 18, so that when the child stroller is folded or unfolded, the rear bracket link 15 rotates to drive the basket bar 17 to synchronously rotate to fold or unfold.

As shown in fig. 1-3, the cart frame may further include a push handle 19, where a lower portion of the push handle 19 is rotatably connected to an upper portion of the push rod 13. Thus, when the stroller is folded, the push handle 19 can be rotated to be close to the push rod 13, so that the structural volume of the folded stroller is reduced.

The backrest 22 may be provided as a unitary structure. The backrest 22 may be configured as a split structure, that is, the plurality of unit backrests are sequentially arranged along the height direction of the backrest 22, and adjacent ends of two adjacent unit backrests are rotatably or slidably connected.

In this embodiment, when the stroller is folded, the height of the junction between the seat 21 and the backrest 22 is reduced due to the backward tilting of the seat 21, and if the backrest 22 is provided as a unitary structure, the lower portion of the backrest 22 extends below the rear wheel assembly 92, so that the folded stroller is bulky and the folded stroller is inconvenient to place. Based on this, in this embodiment, the backrest 22 is in a split structure, and when the stroller is folded, the respective unit backrests can relatively rotate or slide together, so that the height of the backrest 22 is reduced, and the folded stroller rear backrest 22 does not extend below the rear wheel assembly 92.

The stroller further includes a first locking mechanism disposed on the stroller frame to lock the stroller frame in the deployed state.

The first locking mechanism may be provided between the front bracket 11 or the rear bracket 12 and the push rod 13. Specifically, as shown in fig. 6 to 9, the first locking mechanism includes a first locking member 5 and a first locking groove 122 that is adapted to the first locking member 5, the first locking member 5 is movably disposed on one of the front bracket 11 or the rear bracket 12 and the push rod 13, and the first locking groove 122 is disposed on the other of the front bracket 11 or the rear bracket 12 and the push rod 13. When the first locking mechanism is in the locked state, the first locking member 5 is positioned in the first locking groove 122, thereby locking the stroller in the unfolded state, as shown in fig. 6 and 7. When the first locking mechanism is in the unlocked state, the first locking member 5 is disengaged from the first locking groove 122, and the stroller frame can be folded as shown in fig. 8 and 9.

In this embodiment, the first locking member 5 is slidably disposed on the push rod 13, and the first locking groove 122 is disposed on the rear bracket 12, as shown in fig. 6 to 9.

The first locking mechanism further includes a first elastic member (not shown in the drawings) having one end portion provided on the first locking member 5 and the other end portion provided on the push rod 13. When the push rod 13 rotates to a position corresponding to the position of the first locking groove 122 with respect to the rear bracket 12, the first locking member 5 may be slid by the elastic force of the first elastic member, so that the first locking member 5 is inserted into the first locking groove 122.

The stroller further comprises a second locking mechanism arranged between the push rod 13 and the push handle 19 for locking the relative positions of the two.

In this embodiment, the second locking mechanism is in a locked state when the stroller is in both the unfolded state and the folded state, and the push handle 19 cannot rotate relative to the push rod 13. Only after the second locking mechanism is unlocked, the push handle 19 can be rotated relative to the push rod 13 to be close to the push rod 13 or away from the push rod 13.

As shown in fig. 6 to 9, the second locking mechanism includes a second locking member 6 and a second locking groove 131 adapted to the second locking member 6, the second locking member 6 is movably provided on one of the push rod 13 and the push handle 19, and the second locking groove 131 is provided on the other of the push rod 13 and the push handle 19. When the second locking mechanism is in the locked state, the second locking piece 6 is positioned in the second locking groove 131, thereby locking the relative positions of the push handle 19 and the push rod 13, as shown in fig. 6 and 8. When the second locking mechanism is in the unlocked state, the second locking member 6 is disengaged from the second locking groove 131, and the push handle 19 is rotatable relative to the push rod 13, as shown in fig. 7 and 9.

Specifically, the second locking member 6 is provided with a locking portion 61. When the second locking mechanism is in the locked state, the locking portion 61 is inserted in the second locking groove 131. When the second locking mechanism is in the unlocked state, the locking portion 61 is disengaged from the second locking groove 131. As shown in fig. 6-9.

As shown in fig. 6 to 9, two second lock grooves 131 are provided on the push rod 13 or the push rod 19 in the circumferential direction in which the push rod 19 rotates. The second locking member 6 is positioned in one of the second locking grooves 131 when the stroller is in the unfolded state. When the stroller is in the folded condition, the second locking member 6 is positioned in the other second locking groove 131.

In this embodiment, the second locking member 6 is slidably arranged on the push handle 19 and the second locking groove 131 is arranged on the push rod 13.

The second locking mechanism further includes a second elastic member (not shown in the drawings) having one end portion provided on the second locking member 6 and the other end portion provided on the push handle 19. When the push handle 19 rotates relative to the push rod 13 to a position corresponding to the position of the locking portion 61, the second locking member 6 can be slid by the elastic force of the second elastic member, so that the locking portion 61 is inserted into the second locking groove 131.

A guide structure is also provided between the second locking member 6 and the push handle 19 to guide the sliding of the second locking member 6 when the second locking mechanism is locked or unlocked. As shown in fig. 6 to 9, the guide structure includes a guide groove 192 provided on one of the push handle 19 and the second locking member 6 and a guide post 62 provided on the other, the guide post 62 being slidably provided in the guide groove 192. During the process of driving the second locking mechanism to lock or unlock, the sliding of the second locking member 6 is guided and limited by the cooperation between the guide post 62 and the guide groove 192.

The child stroller further comprises a third linkage mechanism which is respectively connected or matched with the push handle 19 and the first locking mechanism, so that when the push handle 19 rotates to be close to the push rod 13 in the folding process of the child stroller, the first locking mechanism is driven to unlock from a locking state, and therefore the first locking mechanism is unlocked without independent operation, and the folding operation of the child stroller is simple and convenient.

As shown in fig. 6 and 7, the third link mechanism includes a first traction cable 71, one end portion of the first traction cable 71 is provided on the first locking piece 5, and the other end portion of the first traction cable 71 is provided on the push handle 19.

The other end of the first traction cable 71 may be fixedly arranged on the push handle 19 such that the push handle 19 starts to rotate, i.e. the first locking member 5 is pulled by the first traction cable 71 to slide, so that the first locking mechanism is unlocked when the push handle 19 is folded in place. I.e. the push handle 19 has a movement stroke which coincides with the sliding stroke of the first locking member 5 when unlocking the first locking mechanism.

The other end portion of the first traction cable 71 is also movably provided on the push handle 19. This makes it possible to make the movement stroke of the push handle 19 when it is folded inconsistent with the sliding stroke of the first locking member 5 when the first locking mechanism is unlocked. In this embodiment, the movement stroke of the push handle 19 is larger than the sliding stroke of the first locking member 5 when the first locking mechanism is unlocked, that is, when the push handle 19 is folded, the other end of the first traction cable 71 is not moved, and the first locking member 5 is kept still, and when the push handle 19 is rotated by a certain angle, the push handle 19 continues to rotate, and then the first locking member 5 is pulled to slide by the first traction cable 71 to unlock the first locking mechanism.

Specifically, the third coupling mechanism further includes a fixing post 72, the fixing post 72 is movably disposed on the push handle 19, and the other end portion of the first traction cable 71 is fixedly disposed on the fixing post 72, as shown in fig. 9 to 12.

As shown in fig. 5, the push handle 19 is provided with a first limiting groove 191, the first limiting groove 191 extends along the circumferential direction of the push handle 19 rotating relative to the push rod 13, and the first limiting groove 191 has two opposite ends. The fixed column 72 is movably disposed in the first limiting groove 191.

When the cart frame is in an unfolded state or a folded state, a gap is formed between the fixing column 72 and at least one end of the first limiting groove 191. In this embodiment, a gap is formed between the fixing post 72 and one of the two ends of the first limiting groove 191, and abuts against the other end.

When the stroller is folded or unfolded, the push handle 19 rotates relative to the push rod 13, and since the fixing post 72 abuts against one end of the first limiting groove 191, the push handle 19 can only rotate in a single direction that the end of the first limiting groove 191 is away from the fixing post 72. In this process, the fixed column 72 is kept stationary, and both the first traction cable 71 and the first slider 5 are stationary, and the other end of the first limiting groove 191 gradually approaches the fixed column 72. When the push rod 19 rotates by a certain angle, the other end of the first limiting groove 191 abuts against the fixed column 72, so that when the push handle 19 rotates, the fixed column 72 is driven to synchronously rotate along the same direction, and the first traction cable 71 can be pulled, and the first locking piece 5 is driven to slide by the first traction cable 71.

The push rod 13 is provided with a second limiting groove 132, and the fixed column 72 is movably arranged in the second limiting groove 132. When the stroller is in the unfolded state, the fixing post 72 is located at one end of the second limiting groove 132, and the first limiting groove 191 and the second limiting groove 132 are respectively located at two opposite sides of the fixing post 72, so as to position the fixing post 72, as shown in fig. 6. When the stroller is in the folded state, the fixing post 72 is located at the other end of the second limiting groove 132, and the first limiting groove 191 and the second limiting groove 132 are also located at two opposite sides of the fixing post 72, so that the fixing post 72 can be positioned as shown in fig. 8.

The child cart further comprises an unlocking mechanism, wherein the unlocking mechanism is arranged on the cart frame and is connected or matched with the second locking mechanism. The second locking mechanism may be actuated to unlock when the unlocking mechanism is operated in the locked state.

The unlocking mechanism includes an unlocking button 81 and a second traction cable 82. The unlocking button 81 is movably provided on a member provided with the second locking member 6, and in this embodiment, the unlocking button 81 is slidably provided on the push handle 19 as shown in fig. 4. One end portion of the second traction cable 82 is provided on the unlocking button 81, and the other end portion of the second traction cable 82 is provided on the second locking piece 6.

When the unlocking button 81 is pressed while the second locking mechanism is in the locked state, the second traction cable 82 may be pulled, so that the second locking member 6 is pulled by the second traction cable 82 to slide relative to the push handle 19, thereby being released from the second locking groove 131 even if the second locking mechanism is unlocked.

When the child stroller is in the unfolded state, the first locking mechanism and the second locking mechanism are both in the locked state, and in the side projection direction, a triangular structure is enclosed among the second rod body 142, the front bracket 11 and the seat 21, and a triangular structure is enclosed among the push rod connecting rod 16, the seat connecting rod 31 and the seat 21, as shown in fig. 1-3.

When the child stroller is folded from the unfolded state, the unlocking mechanism is operated to unlock the second locking mechanism. The push handle 19 is rotated forward to approach the push rod 13. When the push handle 19 is rotated by a certain angle, the push handle 19 continues to rotate to enable the first locking piece 5 to slide, so that when the push handle 19 rotates to be close to the push rod 13, the first locking mechanism is unlocked, and the second locking mechanism is locked again, as shown in fig. 10 and 11. The push rod 13 and the push handle 19 are integrally rotated downwards relative to the rear bracket 12 to be close to the rear bracket 12, in the process, the front bracket 11 is driven to rotate backwards to be close to the rear bracket 12 through the linkage mechanism, and the seat 21 is driven to move backwards to be close to the front bracket 11 through the linkage mechanism. In this process, after the respective unit backrests are relatively rotated or slid together, the entire backrest 22 is rotated downward under its own weight to be brought together with the rear bracket 12, and the folding process is as shown in fig. 12 and 13. Until all the rods and the seat mechanisms forming the trolley frame are closely gathered together, the trolley is finally folded as shown in fig. 14-16, and in the folded trolley, the front bracket 11, the rear bracket 12, the push rod 13 and the push handle 19 are sequentially arranged from front to back, and the seat mechanism is folded between the push handle 13 and the rear bracket 12. The folded baby stroller has compact structure, small volume and convenient carrying and storage.

The above embodiments are provided to illustrate the technical concept and features of the present invention and are intended to enable those skilled in the art to understand the content of the present invention and implement the same, and are not intended to limit the scope of the present invention. All equivalent changes or modifications made in accordance with the spirit of the present invention should be construed to be included in the scope of the present invention.

Claims

1. The baby stroller is characterized by comprising a stroller frame with an unfolding state and a folding state, wherein the stroller frame comprises a front support, a rear support and a push rod, two of the front support, the rear support and the push rod are rotationally connected, a third person is rotationally connected with any one of the front support, the rear support and the push rod or the three are coaxially rotationally connected, the baby stroller comprises a seat and a linkage mechanism, the seat is arranged on the linkage mechanism, and the linkage mechanism is connected with the push rod, so that the seat is driven to move backwards and towards the direction close to the front support when the baby stroller is folded and the push rod rotates.

2. The stroller of claim 1, wherein the linkage comprises a push rod link, a front support link and a seat link, wherein one end of the push rod link is rotatably connected with the push rod, the front support link is rotatably connected with the front support, the seat is rotatably connected with the front support link, one end of the seat link is rotatably connected with the seat, and the other end of the seat link is rotatably connected with the push rod link;

3. The stroller of claim 2, wherein the front bracket link comprises a first rod and a second rod, wherein one ends of the first rod and the second rod intersect, and wherein the seat is rotatably disposed on the second rod;

4. The stroller of claim 2, wherein in the deployed state, the direction of extension of the push rod link intersects the direction of extension of the seat link and encloses a triangular structure with the seat;

5. The stroller of claim 2, wherein the linkage further comprises a rear bracket link, one end of the rear bracket link is rotatably connected to the rear bracket, the other end of the push rod link is rotatably connected to the other end of the rear bracket link, and the front bracket link is rotatably connected to the rear bracket link;

6. The stroller of claim 1, wherein the stroller further comprises a seat mechanism and a backrest, the seat mechanism comprises a seat, the backrest is rotatably arranged relative to the seat, the joint between the seat and the backrest moves downwards when the stroller is folded and moved backwards, the backrest is of a split structure, the backrest comprises a plurality of unit backrests, the plurality of unit backrests are sequentially arranged along the height direction of the backrest, and one end of each two adjacent unit backrests is rotatably or slidably connected.

7. The stroller of claim 1, wherein the stroller frame further comprises a push handle rotatably coupled to the push rod;

8. The stroller of claim 7, wherein the first locking mechanism comprises a first locking member movably disposed on one of the front frame or the rear frame and the push rod and a first locking slot disposed on the other, the first locking member being detachably disposed in the first locking slot;

9. The stroller of claim 8, wherein the push rod is provided with a second limit groove, and the fixed column is movably arranged in the second limit groove;

10. The stroller of claim 6, further comprising a second locking mechanism disposed between the push rod and the push handle to lock the relative positions of the two;