CN216861685U - Baby carriage - Google Patents

Abstract

The utility model relates to a baby carrier with a frame in an unfolded state and a folded state, wherein the frame comprises a front frame, a rear frame and a connecting rod mechanism, the connecting rod mechanism comprises a front upper connecting rod, a front lower connecting rod, a rear upper connecting rod and a rear lower connecting rod, the front upper connecting rod is rotatably connected with the front frame and the rear upper connecting rod, and the front lower connecting rod is rotatably connected with the front frame and the rear lower connecting rod; the back frame includes back mobile jib and a left side, right back wheel subassembly, the connecting rod is gone up in the back, back lower connecting rod rotationally is connected with the back mobile jib respectively, left back wheel subassembly, right back wheel subassembly rotationally is connected with the back mobile jib, left back wheel subassembly passes through left vaulting pole, right back wheel subassembly passes through right vaulting pole and rotationally is connected with back lower connecting rod, moreover, the steam generator is simple in structure, can fold fast, when folding, preceding frame and back frame are drawn close folding each other, left back wheel subassembly and right back wheel subassembly are drawn close folding each other simultaneously, make whole car inwards draw in all around simultaneously, each part closely draws close together, reduce occupation space, be convenient for deposit and carry.

Description

Baby carriage

Technical Field

The utility model relates to the field of children products, in particular to a baby carriage.

Background

In children's articles for use, the bassinet is a common children's toy, for the convenience of children often play, the routine maintenance of being convenient for simultaneously needs to place the bassinet at home, needs to fold and deposits, and folding setting also is convenient for go out and carry. In the prior art, although a corresponding folding baby carrier is available, because the parts cannot be closely closed together after being folded, the folding baby carrier still has a larger structural volume even after being folded, still needs a larger space when being stored, and is inconvenient to carry.

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

Disclosure of Invention

The utility model aims to provide a baby carriage, which can enable the parts to be more closely gathered together after being folded.

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

a baby carriage comprises a frame in an unfolded state and a folded state, the frame comprises a front frame, a rear frame and a connecting rod mechanism, the connecting rod mechanism is connected between the front frame and the rear frame,

the connecting rod mechanism comprises a front upper connecting rod and a front lower connecting rod which are arranged up and down, a rear upper connecting rod and a rear lower connecting rod which are arranged up and down, and a connecting rod locking piece, wherein the front end of the front upper connecting rod and the front end of the front lower connecting rod are respectively rotatably connected with the front frame, the rear end of the front upper connecting rod is rotatably connected with the front end of the rear upper connecting rod, the rear end of the front lower connecting rod is rotatably connected with the front end of the rear lower connecting rod, and the connecting rod locking piece is used for rotatably locking the rear end of the front upper connecting rod with the front end of the rear upper connecting rod and the rear end of the front lower connecting rod with the front end of the rear lower connecting rod;

the rear frame comprises a rear main rod, a left rear wheel assembly and a right rear wheel assembly, the rear ends of the rear upper connecting rod and the rear lower connecting rod are respectively rotatably connected with the rear main rod, the left rear wheel assembly and the right rear wheel assembly are respectively rotatably connected with the rear main rod, and the left rear wheel assembly is respectively rotatably connected with the rear lower connecting rod through a left support rod and a right support rod through a right rear wheel assembly;

when the frame is converted from the unfolding state to the folding state, the front frame, the left rear wheel assembly and the right rear wheel assembly are close to each other.

Preferably, the rear end of the front upper link, the rear end of the front lower link, the front end of the rear upper link, and the front end of the rear lower link are rotatably connected to the link locking member, respectively.

Preferably, the rear end of the front upper connecting rod, the front end of the rear upper connecting rod and the connecting rod locking piece are coaxially connected; the rear end of the front lower connecting rod, the front end of the rear lower connecting rod and the connecting rod locking piece are coaxially connected.

Further preferably, the link lock has a front lock portion for locking rotation between the rear ends of the front upper link and the front lower link and a rear lock portion; the rear locking part is used for rotationally locking the front end of the rear upper connecting rod, the front end of the rear lower connecting rod and the connecting rod locking part.

Still further preferably, the front locking part includes a first locking hole opened on the connecting rod locking part, the rear end of the front upper connecting rod or the rear end of the front lower connecting rod is opened with a front locking hole, and when the locking rod passes through the first locking hole and the front locking hole at the same time, the rear ends of the front upper connecting rod and the front lower connecting rod and the connecting rod locking part are locked in rotation;

the rear locking part comprises a second locking hole formed in the connecting rod locking part, the rear locking hole is formed in the front end of the rear upper connecting rod or the front end of the rear lower connecting rod, and when the locking rod penetrates through the second locking hole and the rear locking hole at the same time, the front end of the rear upper connecting rod, the front end of the rear lower connecting rod and the connecting rod locking part are locked in a rotating mode.

Still further preferably, the rear end of the front lower link, the front end of the rear lower link, and the rotational connection point of the link lock are located between the front lock portion and the rear lock portion.

Still further preferably, the link lock is in the shape of an "inverted T".

Preferably, the left rear wheel assembly comprises a left rear wheel carrier and a left rear wheel connected to the lower end of the left rear wheel carrier, and the upper end of the left rear wheel carrier is rotatably connected with the rear main rod; the right rear wheel assembly comprises a right rear wheel frame and a right rear wheel connected to the lower end of the right rear wheel frame, and the upper end of the right rear wheel frame is rotatably connected with the rear main rod.

Further preferably, the rear main rod is provided with a first rotating connecting part and a second rotating connecting part; the upper end of the left rear wheel carrier is provided with a left rotating connecting part which is rotatably connected with the first rotating connecting part, the upper end of the right rear wheel carrier is provided with a right rotating connecting part which is rotatably connected with the second rotating connecting part, and the first rotating connecting part is in inclined plane with the contact surface of the left rotating connecting part and the contact surface of the second rotating connecting part.

Preferably, the upper end of left vaulting pole, the upper end of right vaulting pole respectively through universal connection spare with the back lower connecting rod rotates to be connected, the lower extreme of left vaulting pole pass through universal connection spare with left rear wheel subassembly rotates to be connected, the lower extreme of right vaulting pole pass through universal connection spare with right rear wheel subassembly rotates to be connected.

Further preferably, the upper end of the left stay bar is perpendicular to the universal connecting piece of the rear lower connecting rod and a rotating shaft between the left stay bar and the universal connecting piece; the universal connecting piece between the lower end of the left stay bar and the left rear wheel assembly is vertical to the rotating shaft between the left stay bar and the left rear wheel assembly; the universal connecting piece between the upper end of the right stay bar and the rear lower connecting rod is vertical to a rotating shaft between the right stay bar and the rear lower connecting rod; the universal connecting piece between the lower end of the right stay bar and the right rear wheel component is vertical to the rotating shaft between the right stay bar and the right rear wheel component.

Preferably, the front frame includes a front main rod, a handlebar and a front wheel assembly, the handlebar is connected to the upper end of the front main rod, the front wheel assembly is connected to the lower end of the front main rod, and the front end of the front upper connecting rod and the front end of the front lower connecting rod are respectively rotatably connected to the front main rod.

It is further preferred that only one set of front wheel assemblies is provided, the buggy being a tricycle.

Preferably, the rear frame further includes a seat and a backrest, the seat is connected to the rear upper link, the backrest is connected to the rear main rod, and when the frame is converted from the unfolded state to the folded state, surfaces of the seat and the backrest are close to each other.

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

the folding bicycle is simple in structure, can be folded quickly, is simple in folding method, can be ridden and used normally when being unfolded, can be folded, and can be folded, namely, the front bicycle frame and the rear bicycle frame can be folded mutually, the left rear wheel assembly and the right rear wheel assembly can also be folded mutually, so that the whole bicycle can be folded inwards at the same time, and all the parts are closely closed together, thereby greatly reducing the volume, reducing the occupied space and being convenient to store and carry.

Drawings

FIG. 1 is a schematic side view of the present embodiment in an expanded state;

FIG. 2 is an exploded view of the present embodiment;

FIG. 3 is a perspective view of the present embodiment in an expanded state;

FIG. 4 is a perspective view of the present embodiment in an intermediate state between unfolded and folded;

FIG. 5 is a perspective view of the present embodiment in a folded state;

FIG. 6 is a rear view of the present embodiment in an expanded state;

fig. 7 is a rear view of the present embodiment in a folded state.

In the above drawings: 1. a front frame; 11. a front main rod; 12. a front wheel assembly; 13. a handlebar; 2. a rear frame; 21. a rear main rod; 211. a first rotational connection; 212. a second rotation connecting portion; 22. a left rear wheel assembly; 221. a left rear wheel carrier; 2211. a left-hand rotation connection; 222. a left rear wheel; 23. a right rear wheel assembly; 231. a right rear wheel carrier; 2311. a right-turn connecting portion; 232. a right rear wheel; 24. a seat; 25. a backrest; 3. a link mechanism; 31. a front upper connecting rod; 32. a front lower connecting rod; 33. a rear upper connecting rod; 34. a rear lower connecting rod; 35. a connecting rod locking member; 351. a front locking portion; 352. a rear locking portion; 41. a left stay bar; 42. a right stay bar; 43. a universal connecting piece.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within 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", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular 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, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1-7, a baby carriage comprises a frame which has an unfolded state and a folded state, when the frame is in the unfolded state, the baby carriage can be used for normal riding, and when the frame is in the folded state, all parts can be folded towards the middle. The frame comprises a front frame 1, a rear frame 2 and a connecting rod mechanism 3, wherein the connecting rod mechanism 3 is connected between the front frame 1 and the rear frame 2.

Generally, the front frame 1 includes a front main rod 11, a front wheel assembly 12, the front wheel assembly 12 is connected to the lower end of the front main rod 11, the rear frame 2 includes a rear main rod 21, a left rear wheel assembly 22 and a right rear wheel assembly 23, the left rear wheel assembly 22 is connected to the left lower end of the rear main rod 21, and the right rear wheel assembly 23 is connected to the right lower end of the rear main rod 21. The link mechanism 3 includes a front upper link 31 and a front lower link 32 which are vertically disposed, a rear upper link 33 and a rear lower link 34 which are vertically disposed, and a link locking member 35, wherein the front end of the front upper link 31 and the front end of the front lower link 32 are rotatably connected to the front main rod 11, respectively, the rear end of the front upper link 31 is rotatably connected to the front end of the rear upper link 33, the rear end of the front lower link 32 is rotatably connected to the front end of the rear lower link 34, the rear end of the rear upper link 33 and the rear end of the rear lower link 34 are rotatably connected to the rear main rod 21, respectively, and the link locking member 35 is used for rotationally locking the space between the rear end of the front upper link 31 and the front end of the rear upper link 33 and the space between the rear end of the front lower link 32 and the front end of the rear lower link 34, so as to stabilize the vehicle frame in the unfolded state. The left rear wheel assembly 22 and the right rear wheel assembly 23 are respectively rotatably connected with the rear main rod 21, and the left rear wheel assembly 22 is respectively rotatably connected with the rear lower connecting rod 34 through a left stay 41 and the right rear wheel assembly 23 through a right stay 42.

As shown in fig. 3-5, when the frame is reciprocally shifted between the unfolded state and the folded state, the rear end of the front upper link 31, the rear end of the front lower link 32, the front end of the rear upper link 33, and the front end of the rear lower link 34 are relatively fixed with respect to the entire position of the frame, and serve as the center of the unfolding and folding operations. When the frame is converted from the unfolded state to the folded state, the front end of the front upper connecting rod 31 and the front end of the front lower connecting rod 32 drive the front frame 1 to approach the rear frame 2 in the front-rear direction, the rear end of the rear upper connecting rod 33 and the rear end of the rear lower connecting rod 34 drive the rear frame 2 to approach the front frame 1 in the front-rear direction, and the left stay 41 and the right stay 42 respectively drive the left rear wheel assembly 22 and the right rear wheel assembly 23 to approach each other in the left-right direction under the drive of the rear lower connecting rod 34, that is, the front frame 1, the left rear wheel assembly 22 and the right rear wheel assembly 23 simultaneously approach each other towards the middle. When the frame is converted from the folded state to the unfolded state, the front end of the front upper connecting rod 31 and the front end of the front lower connecting rod 32 drive the front frame 1 to be away from the rear frame 2 in the front-rear direction, the rear end of the rear upper connecting rod 33 and the rear end of the rear lower connecting rod 34 drive the rear frame 2 to be away from the front frame 1 in the front-rear direction, the left stay 41 and the right stay 42 respectively drive the left rear wheel assembly 22 and the right rear wheel assembly 23 to be away from each other in the left-right direction under the drive of the rear lower connecting rod 34, and namely the front frame 1, the left rear wheel assembly 22 and the right rear wheel assembly 23 simultaneously expand outwards.

Specifically, as shown in fig. 2 and 3, the rear end of the front upper link 31, the rear end of the front lower link 32, the front end of the rear upper link 33, and the front end of the rear lower link 34 are rotatably connected to the link lock member 35, respectively. The rear end of the front upper connecting rod 31, the front end of the rear upper connecting rod 33 and the connecting rod locking piece 35 are coaxially connected, and the rotating shaft extends along the left-right direction; the rear end of the front lower link 32, the front end of the rear lower link 34, and the link lock 35 are coaxially connected, and the rotation shaft extends in the left-right direction. In this embodiment, the distance between the rotating shafts at the two ends of the front upper connecting rod 31 and the distance between the rotating shafts at the two ends of the front lower connecting rod 32 are equal, and the front upper connecting rod 31 and the front lower connecting rod 32 are parallel; the distance between the rotating shafts at the two ends of the rear upper connecting rod 33 and the distance between the rotating shafts at the two ends of the rear lower connecting rod 34 are equal, and the rear upper connecting rod 33 and the rear lower connecting rod 34 are parallel; when the frame is in the unfolded state, the front upper link 31 and the rear upper link 33 are on the same straight line, and the front lower link 32 and the rear lower link 34 are on the same straight line.

The link lock 35 has a front lock portion 351 and a rear lock portion 352. The front lock unit 351 is used to lock the rotation between the rear ends of the front upper link 31 and the front lower link 32 and the link lock member 35, and when the front upper link 31 and the front lower link 32 rotate, they form a parallelogram, and when one end is locked, the front side can be locked by locking, and when the front lock unit 351 is locked, only the front frame 1 is maintained in the unfolded state. The rear lock portion 352 is used to lock the rotation between the front end of the rear upper link 33 and the front end of the rear lower link 34 and the link lock member 35, and the rear upper link 33 and the rear lower link 34 form a parallelogram when they rotate, and the rear rotation can be locked by locking one end thereof, and only the rear frame 2 is maintained in the unfolded state when the rear lock portion 352 is locked.

The front locking part 351 comprises a first locking hole formed on the connecting rod locking part 35, the rear end of the front upper connecting rod 31 or the rear end of the front lower connecting rod 32 is provided with a front locking hole, when the locking rod simultaneously passes through the first locking hole and the front locking hole, the rear ends of the front upper connecting rod 31 and the front lower connecting rod 32 and the connecting rod locking part 35 are rotationally locked, so that the front frame 1 is maintained in an unfolded state; the rear locking portion 352 includes a second locking hole formed in the link locking member 35, a rear locking hole is formed in the front end of the rear upper link 33 or the front end of the rear lower link 34, and when the lock lever passes through the second locking hole and the rear locking hole at the same time, the front end of the rear upper link 33, the front end of the rear lower link 34, and the link locking member 35 are rotationally locked. In the present embodiment, the link locking pieces 35 are provided on both the left and right sides of the link mechanism 3, and the link locking pieces 35 are in an inverted T shape, the front locking portion 351 directly locks the front lower link 32, the rear locking portion 352 directly locks the rear lower link 34, the rotational connection points of the rear end of the front lower link 32, the front end of the rear lower link 34, and the link locking piece 35 are located between the front locking portion 351 and the rear locking portion 352, and the rotational connection points of the rear end of the front upper link 31, the front end of the rear upper link 33, and the link locking piece 35 are located above the rotational connection points of the rear end of the front lower link 32, the front end of the rear lower link 34, and the link locking piece 35.

The left rear wheel assembly 22 comprises a left rear wheel carrier 221 and a left rear wheel 222 connected to the lower end of the left rear wheel carrier 221, and the upper end of the left rear wheel carrier 221 is rotatably connected with the rear main rod 21; the right rear wheel assembly 23 includes a right rear wheel frame 231, a right rear wheel 232 connected to a lower end of the right rear wheel frame 231, and an upper end of the right rear wheel frame 231 is rotatably connected to the rear main rod 21.

As shown in fig. 6 and 7, the rear main lever 21 is provided with a first rotation connecting portion 211 and a second rotation connecting portion 212, and the rear upper link 33, the rear lower link 34 and the rear main lever 21 are arranged symmetrically about the connecting portion. The upper end of the left rear wheel carrier 221 is provided with a left rotation connecting part 2211 rotatably connected with the first rotation connecting part 211, the upper end of the right rear wheel carrier 231 is provided with a right rotation connecting part 2311 rotatably connected with the second rotation connecting part 212, the contact surface between the first rotation connecting part 211 and the left rotation connecting part 2211 and the contact surface between the second rotation connecting part 212 and the right rotation connecting part 2311 are inclined planes, when the baby carriage is arranged along the front and rear direction, an included angle larger than 0 degree is formed between the inclined planes and the front and rear direction, and meanwhile, the inclined planes on the two sides are arranged in bilateral symmetry, so that the left rear wheel carrier 22 and the right rear wheel carrier 23 can swing in the left and right direction. More specifically, the inclined plane has an included angle greater than 0 ° and smaller than 90 ° with respect to the forward and backward directions, and the inclined plane enables the left rear wheel assembly 22 and the right rear wheel assembly 23 to be folded forward and simultaneously folded inward and to be unfolded backward and simultaneously to be vertically arranged normally in the unfolded state of the frame and to be folded obliquely inward as shown in fig. 5 and 7 in the folded state of the frame.

As shown in fig. 1 to 5, the upper end of the left stay 41 and the upper end of the right stay 42 are rotatably connected to the rear lower link 34 via universal joints 43, the lower end of the left stay 41 is rotatably connected to the left rear wheel frame 221 via universal joints 43, and the lower end of the right stay 42 is rotatably connected to the right rear wheel frame 231 via universal joints 43. The left rear wheel assembly 22 and the right rear wheel assembly 23 can rotate in the front-back direction and the left-right direction respectively through the universal connecting piece 43. Due to the inclined plane, when the left rear wheel frame 221 and the right rear wheel frame 231 are folded forwards and inwards at the same time, the space angle between the left rear wheel frame 221 and the rear lower connecting rod 34 and the space angle between the left rear wheel frame 221 and the rear lower connecting rod are changed, and the universal connecting pieces 43 at the two ends of the left stay 41 and the right stay 42 are used for adapting to the space angle change when the left stay 41 and the right stay 42 drive the left rear wheel frame 221 and the right rear wheel frame 231 to be folded. In this embodiment, the universal connecting piece is a U-shaped piece, and the upper end of the left stay bar 41 is perpendicular to the universal connecting piece 43 of the rear lower connecting rod 34 and the rotating shaft between the two; the universal connecting piece 43 between the lower end of the left stay bar 41 and the left rear wheel assembly 22 is vertical to the rotating shaft between the left stay bar and the left rear wheel assembly; the universal connecting piece 43 between the upper end of the right stay bar 42 and the rear lower connecting rod 34 is vertical to the rotating shaft between the right stay bar and the rear lower connecting rod; the universal connecting piece 43 between the lower end of the right stay 42 and the right rear wheel assembly 23 is vertical to the rotating shaft between the two.

The front frame 1 further comprises a handlebar 13, the handlebar 13 is connected to the upper end of the front main rod 11, the front wheel assembly 12 is only provided with one group, namely the baby carriage is a tricycle, the handlebar 13 and the front wheel assembly 12 are respectively arranged at the upper end and the lower end of the front main rod 11, and the handlebar 13 drives the front wheel assembly 12 to rotate to control the advancing direction of the baby carriage in the unfolding state.

The rear frame 2 further includes a seat 24, a backrest 25, the seat 24 being connected to the rear upper link 33, the backrest 25 being connected to the rear main rod 21, and when the frame is converted from the unfolded state to the folded state, the surfaces of the seat 24 and the backrest 25 are close to each other, while the surfaces of the handlebar 13 and the backrest 25 are close to each other.

The above embodiments are only for illustrating the technical idea and features of the present invention, and the purpose of the present invention is to enable those skilled in the art to understand the content of the present invention and implement the present invention, and not to limit the protection scope of the present invention by this means. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims (10)

1. The utility model provides a bassinet, is including having the frame of expansion state, fold condition, the frame includes preceding frame, back frame, link mechanism connects between preceding frame, the back frame, its characterized in that:

the connecting rod mechanism comprises a front upper connecting rod and a front lower connecting rod which are arranged up and down, a rear upper connecting rod and a rear lower connecting rod which are arranged up and down, and a connecting rod locking piece, wherein the front end of the front upper connecting rod and the front end of the front lower connecting rod are respectively rotatably connected with the front frame, the rear end of the front upper connecting rod is rotatably connected with the front end of the rear upper connecting rod, the rear end of the front lower connecting rod is rotatably connected with the front end of the rear lower connecting rod, and the connecting rod locking piece is used for rotatably locking the rear end of the front upper connecting rod with the front end of the rear upper connecting rod and the rear end of the front lower connecting rod with the front end of the rear lower connecting rod;

the rear frame comprises a rear main rod, a left rear wheel assembly and a right rear wheel assembly, the rear ends of the rear upper connecting rod and the rear lower connecting rod are respectively rotatably connected with the rear main rod, the left rear wheel assembly and the right rear wheel assembly are respectively rotatably connected with the rear main rod, and the left rear wheel assembly is respectively rotatably connected with the rear lower connecting rod through a left support rod and a right support rod through a right rear wheel assembly;

when the frame is converted from the unfolding state to the folding state, the front frame, the left rear wheel assembly and the right rear wheel assembly are close to each other.

2. A stroller according to claim 1, wherein: the rear end of the front upper connecting rod, the rear end of the front lower connecting rod, the front end of the rear upper connecting rod and the front end of the rear lower connecting rod are respectively and rotatably connected with the connecting rod locking piece.

3. A stroller according to claim 1 or 2, wherein: the rear end of the front upper connecting rod, the front end of the rear upper connecting rod and the connecting rod locking piece are coaxially connected; the rear end of the front lower connecting rod, the front end of the rear lower connecting rod and the connecting rod locking piece are coaxially connected.

4. A stroller according to claim 2, wherein: the connecting rod locking piece is provided with a front locking part and a rear locking part, and the front locking part is used for rotationally locking the rear ends of the front upper connecting rod and the front lower connecting rod with the connecting rod locking piece; the rear locking part is used for rotationally locking the front end of the rear upper connecting rod, the front end of the rear lower connecting rod and the connecting rod locking part.

5. A stroller according to claim 4, wherein: the front locking part comprises a first locking hole formed in the connecting rod locking part, the rear end of the front upper connecting rod or the rear end of the front lower connecting rod is provided with a front locking hole, and when the locking rod simultaneously penetrates through the first locking hole and the front locking hole, the rear end of the front upper connecting rod, the rear end of the front lower connecting rod and the connecting rod locking part are rotationally locked;

the rear locking part comprises a second locking hole formed in the connecting rod locking part, the rear locking hole is formed in the front end of the rear upper connecting rod or the front end of the rear lower connecting rod, and when the locking rod penetrates through the second locking hole and the rear locking hole at the same time, the front end of the rear upper connecting rod, the front end of the rear lower connecting rod and the connecting rod locking part are locked in a rotating mode.

6. A stroller according to claim 1, wherein: the left rear wheel assembly comprises a left rear wheel frame and a left rear wheel connected to the lower end of the left rear wheel frame, and the upper end of the left rear wheel frame is rotatably connected with the rear main rod; the right rear wheel assembly comprises a right rear wheel frame and a right rear wheel connected to the lower end of the right rear wheel frame, and the upper end of the right rear wheel frame is rotatably connected with the rear main rod.

7. A stroller according to claim 6, wherein: the rear main rod is provided with a first rotating connecting part and a second rotating connecting part; the upper end of the left rear wheel carrier is provided with a left rotating connecting part rotatably connected with the first rotating connecting part, the upper end of the right rear wheel carrier is provided with a right rotating connecting part rotatably connected with the second rotating connecting part, the first rotating connecting part is provided with a contact surface of the left rotating connecting part, and the second rotating connecting part is provided with an inclined surface.

8. A stroller according to claim 1, wherein: the upper end of left vaulting pole, the upper end of right vaulting pole respectively through universal connection with the back lower connecting rod rotates to be connected, the lower extreme of left vaulting pole pass through universal connection with the left rear wheel subassembly rotates to be connected, the lower extreme of right vaulting pole pass through universal connection with right rear wheel subassembly rotates to be connected.

9. A stroller according to claim 1, wherein: the front frame comprises a front main rod, a handlebar and a front wheel assembly, wherein the handlebar is connected to the upper end of the front main rod, the front wheel assembly is connected to the lower end of the front main rod, and the front end of the front upper connecting rod and the front end of the front lower connecting rod are respectively and rotatably connected to the front main rod.

10. A stroller according to claim 1, wherein: the rear frame further comprises a seat and a backrest, the seat is connected to the rear upper connecting rod, the backrest is connected to the rear main rod, and when the frame is converted from the unfolding state to the folding state, the surfaces of the seat and the backrest are close to each other.

Images