CN220549094U

CN220549094U - Child cart

Info

Publication number: CN220549094U
Application number: CN202321626333.6U
Authority: CN
Inventors: 廖整辉
Original assignee: Zhongshan Xingshang Baby Product Co ltd
Current assignee: Zhongshan Xingshang Baby Product Co ltd
Priority date: 2023-06-25
Filing date: 2023-06-25
Publication date: 2024-03-01
Anticipated expiration: 2033-06-25

Abstract

The utility model discloses a baby stroller, which can move from an unfolding position to a folding position after a locking device is unlocked, and comprises a bottom support frame capable of being unfolded or folded, wherein the bottom support frame comprises front legs and rear legs which are rotatably connected to the front legs around a first axis A, the front legs are connected with front wheels, the rear legs are connected with rear wheels, the bottom support frame is also connected with a stay bar assembly which can rotate around a second axis B relative to the bottom support frame, the bottom support frame is also connected with a seat assembly which can rotate around a third axis C relative to the bottom support frame, the seat assembly can move from the unfolding position to the folding position, and a driving structure which can enable the seat assembly to rotate relative to the bottom support frame to be close to the rear legs and enable the front legs and the rear legs to rotate to be close to each other when the stay bar assembly rotates towards the rear legs is arranged among the seat assembly, the front legs, the rear legs and the stay bar assembly can be rotated to be close to each other. The utility model aims to overcome the defects of the prior art and provides a child cart convenient to fold.

Description

Child cart

[ field of technology ]

The utility model relates to a child stroller.

[ background Art ]

At present, the child cart has become an indispensable article for the child in the growth process. The children's barrow on the market can be folded or unfolded generally, but the existing children's barrow is complex in transmission structure, more in connecting rods and larger in volume after folding. Therefore, a child stroller with convenient folding and unfolding operation is highly desired, and the utility model provides a novel child stroller structure.

[ utility model ]

The utility model aims to overcome the defects of the prior art and provides a child cart convenient to fold.

The utility model is realized by the following technical scheme:

the utility model provides a children's shallow, can follow expansion position to folding position after unlocking locking device, including the bottom sprag frame 1 that can expand or fold, bottom sprag frame 1 include preceding leg 11 and around first axis A rotation connect the back leg 12 on preceding leg 11, preceding leg 11 on be connected with front wheel 111, back leg 12 on be connected with rear wheel 121, bottom sprag frame 1 on still be connected with the brace subassembly 13 that can rotate around second axis B relative thereto, bottom sprag frame 1 on still be connected with the seat subassembly 2 that can rotate around third axis C relative thereto, seat subassembly 2 can move to folding position from expansion position, seat subassembly 2, preceding leg 11, back leg 12 and brace subassembly 13 between be equipped with and can make seat subassembly 2 rotate relative bottom sprag frame 1 and draw close to back leg 12 and can make the driving structure 3 that front leg 11 and back leg 12 rotate and draw close to each other when brace subassembly 13 rotates to back leg 12.

The driving structure 3 comprises a connecting rod assembly 31 which is arranged among the seat assembly 2, the front leg 11 and the rear leg 12 and can enable the front leg 11 and the rear leg 12 to rotate close when the seat assembly 2 rotates relative to the bottom supporting frame 1, and the driving structure 3 further comprises a transmission assembly 32 which is arranged among the seat assembly 2, the front leg 11, the rear leg 12 and the supporting rod assembly 13 and can drive the seat assembly 2 to rotate relative to the bottom supporting frame 1 when the supporting rod assembly 13 rotates.

The connecting rod assembly 31 comprises a first linkage rod 311 with one end rotatably connected to the front leg 11 around a fourth axis D, a second linkage rod 312 with one end rotatably connected to the rear leg 12 around a fifth axis E is arranged on the rear leg, the first linkage rod 311 and the second linkage rod 312 rotate around a sixth axis F, a third linkage rod 313 rotating around a seventh axis G is connected to the first linkage rod 311 or the second linkage rod 312, and the other end of the third linkage rod 313 is rotatably connected to the seat assembly 2 around an eighth axis H.

And a reversing assembly 4 which can make the supporting rod assembly 13 rotate back and forth relative to the bottom support frame 1 is arranged between the supporting rod assembly 13 and the bottom support frame 1.

The reversing assembly 4 comprises a first locking position 41 and a second locking position 42 which are arranged on the rear leg 12 and can correspond to the front side position and the rear side position of the supporting rod assembly 13, the supporting rod assembly 13 is provided with a first locking piece 43 which can slide relatively to be clamped in or separated from the first locking position 41 or the second locking position 42, the supporting rod assembly 13 is connected with a first unlocking piece 44 which can slide relatively to the supporting rod assembly 13, a first stay cable 45 is arranged between the first unlocking piece 44 and the first locking piece 43, and an elastic element 46 which can push the first locking piece 43 to reset is arranged between the first locking piece 43 and the supporting rod assembly 13.

The seat assembly 2 comprises a seat rod 21 rotatably connected to the rear leg 12 around a third axis C, a backrest rod 22 capable of rotating relative to the seat rod 21 is connected to the seat rod 21, a grab bar 23 capable of rotating relative to the backrest rod 22 is further arranged between the seat rod 21 and the seat rod 22, and the third linkage rod 313 is rotatably connected to the seat rod 21 around an eighth axis H.

The transmission assembly 32 comprises a rotating seat 321 which is rotationally connected in the rear leg 12, the rotating seat 321 is connected with the supporting rod assembly 13 and rotates along with the supporting rod assembly 13 when the supporting rod assembly 13 rotates, the rotating seat 321 is provided with a plurality of gear teeth portions 322 along the circumference, a first gear 323 which can be meshed with the gear teeth portions 322 for transmission is arranged on the rear leg 12 and located on the inner side of the gear teeth portions 322, and a second gear 324 which can drive the seat assembly 2 to rotate when the first gear 323 is meshed with the first gear 323 is fixedly connected to the seat rod.

The brace assembly 13 comprises a brace 131 rotatably connected to the rear leg 12, the brace 131 is connected with a handle bar 132 capable of rotating relative to the brace 131, and a locking assembly 5 capable of locking the first locking member 43 and the rotating seat 321 and being driven to unlock when the handle bar 132 is folded relative to the brace 131.

The locking assembly 5 comprises a first clamping groove 51 arranged on the rear leg 12, a second clamping locking piece 52 which can slide relative to the rotating seat 321 and be clamped into or separated from the first clamping groove 51 is connected to the rotating seat 321, the locking assembly 5 further comprises a third clamping locking piece 54 which is connected with the first clamping locking piece 43 through a bolt 53, a third locking position 55 and a fourth locking position 56 which correspond to the first locking position 41 and the second locking position 42 are arranged on the rear leg 12, when the third clamping locking piece 54 is positioned in the third locking position 55 and the handle 132 rotates and folds relative to the supporting rod 131, the third clamping locking piece 54 can be pulled by the handle 132 to be separated from the third locking position 55, the second clamping locking piece 52 is separated from the first clamping groove 51, and an elastic part 57 which can push the third clamping piece 54 to reset is arranged between the third clamping piece 54 and the supporting rod 131.

The backrest comprises a backrest rod 22, a seat rod 21, a backrest rod 22 and a grab rod 23, wherein an adjusting component 6 capable of adjusting the inclined gear between the backrest rod 22 and the seat rod 21 is arranged between the seat rod 21 and the seat rod 21, a first locking component 7 capable of locking the seat rod 21 and the grab rod 23 and capable of being unlocked when the backrest rod 22 rotates towards the seat rod 21 is arranged between the backrest rod 22, a second locking component 8 capable of locking the backrest rod 22 and the seat rod 21 is arranged between the rear leg 12 and the backrest rod 22, the second locking component 8 comprises a locking position 81 arranged on the rear leg 12, a fifth locking piece 82 capable of sliding relative to the seat rod 21 and being clamped in or separated from the locking position 81 is arranged on the seat rod 21, a spring 83 capable of resetting the fifth locking piece 82 is arranged between the fifth locking piece 82 and the backrest rod 22, a first pushing inclined plane 821 is arranged on the fifth locking piece 82, a convex protruding lug 841 is arranged on the backrest rod 22, and a second pushing inclined plane 821 capable of being contacted with the first inclined plane 841 and propped against each other is arranged on the protruding lug 84.

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

1. when the folding child stroller needs to be folded, the locking device is unlocked firstly, then the seat assembly is moved from the unfolding position to the folding position, then the supporting rod assembly is rotated, at the moment, the supporting rod assembly rotates around the second axis B relative to the rear leg, in the rotating process, the driving structure is driven by the supporting rod assembly, at the moment, the seat assembly rotates anticlockwise around the third axis C relative to the bottom supporting frame and rotates towards the rear leg, at the same time, the front leg rotates towards the rear leg relative to the first axis A, and when the seat assembly is close to the rear leg, the front leg is close to the rear leg and the supporting rod assembly is close to the rear leg, the whole child stroller is folded, and the folding operation is very simple. The present utility model only requires that the seat assembly be folded and then the locking device be unlocked and then the strut assembly be pushed to rotate toward the front leg.

2. When the stay bar assembly rotates relative to the rear leg, the stay bar assembly drives the transmission assembly to move, the seat assembly rotates relative to the rear leg when the transmission assembly moves, and at the moment, the seat assembly drives the front leg to rotate towards the rear leg through the connecting rod assembly.

[ description of the drawings ]

FIG. 1 is a perspective view of a child stroller of the present utility model;

FIG. 2 is a side view of the child stroller of the present utility model;

FIG. 3 is a perspective view of the bottom bracket of the child stroller of the present utility model;

FIG. 4 is a side view of the bottom bracket of the child stroller of the present utility model;

FIG. 5 is a side view of the child stroller of the present utility model after a change of direction;

FIG. 6 is an exploded view of the reversing assembly of the child stroller of the present utility model;

FIG. 7 is an enlarged view of region I of FIG. 3;

FIG. 8 is one of the exploded views of the drive assembly of the child stroller of the present utility model;

FIG. 9 is a second exploded view of the drive assembly of the stroller of the present utility model;

FIG. 10 is a perspective view of a locking assembly in the child stroller of the present utility model;

FIG. 11 is one of the exploded views of the locking assembly of the child stroller of the present utility model;

FIG. 12 is a second exploded view of the locking assembly of the child stroller of the present utility model;

FIG. 13 is a third exploded view of the locking assembly of the child stroller of the present utility model;

FIG. 14 is a state diagram of the third latch in the child stroller of the present utility model disengaged from the third latch position;

FIG. 15 is a view showing the third latch disengaged from the third lock position and the second latch disengaged from the first slot in the child stroller according to the present utility model;

FIG. 16 is one of the exploded views of the seat assembly of the child stroller of the present utility model;

FIG. 17 is a perspective view of a back bar in the child stroller of the present utility model;

FIG. 18 is a second exploded view of the seat assembly of the child stroller of the present utility model;

FIG. 19 is one of the exploded views of the third locking assembly of the child stroller of the present utility model;

FIG. 20 is a second exploded view of a third locking assembly in the stroller of the present utility model;

FIG. 21 is a state diagram of the child stroller seat assembly of the present utility model as folded;

fig. 22 is a state diagram of the child stroller of the present utility model when folded.

[ detailed description ] of the utility model

The utility model is further described below with reference to the accompanying drawings:

as shown in fig. 1 to 22, the present utility model provides a stroller, which can move from an unfolded position to a folded position after unlocking a locking device, and comprises a bottom support frame 1 capable of being unfolded or folded, wherein the bottom support frame 1 comprises a front leg 11 and a rear leg 12 rotatably connected to the front leg 11 around a first axis a, the bottom support frame 1 is further connected with a supporting rod assembly 13 capable of rotating around a second axis B relative to the bottom support frame 1, the bottom support frame 1 is further connected with a seat assembly 2 capable of rotating around a third axis C relative to the bottom support frame 1, the seat assembly 2 can move from an unfolded position to a folded position, and a driving structure 3 capable of enabling the seat assembly 2 to rotate relative to the bottom support frame 1 and enabling the front leg 11 and the rear leg 12 to be close together and enabling the front leg 11 and the rear leg 12 to rotate close together is arranged among the seat assembly 2, the front leg 11, the rear leg 12 and the supporting rod assembly 13. When the folding seat is required to be folded, the locking device is unlocked firstly, then the seat assembly 2 is moved from the unfolding position to the folding position, then the supporting rod assembly 13 is rotated, at the moment, the supporting rod assembly 13 rotates around the second axis B relative to the rear leg 12, in the rotating process, the driving structure 3 is driven by the supporting rod assembly 13, at the moment, the seat assembly 2 rotates anticlockwise around the third axis C relative to the bottom supporting frame 1 and is rotated towards the rear leg 12, at the same time, the front leg 11 rotates around the first axis A relative to the rear leg 12 and is folded, and when the seat assembly 2 is folded with the rear leg 12, the front leg 11 is folded with the rear leg 12 and the supporting rod assembly 13 is folded with the rear leg 12, the whole child stroller is folded, and the folding operation is very simple. The present utility model only requires that the strut assembly 13 be pushed to rotate toward the front leg 11 after the seat assembly 2 is folded and then the locking means is unlocked.

The driving structure 3 comprises a connecting rod assembly 31 which is arranged among the seat assembly 2, the front leg 11 and the rear leg 12 and can enable the front leg 11 and the rear leg 12 to rotate close when the seat assembly 2 rotates relative to the bottom supporting frame 1, and the driving structure 3 further comprises a transmission assembly 32 which is arranged among the seat assembly 2, the front leg 11, the rear leg 12 and the supporting rod assembly 13 and can drive the seat assembly 2 to rotate relative to the bottom supporting frame 1 when the supporting rod assembly 13 rotates. When the stay bar assembly 13 rotates relative to the rear leg 12, the stay bar assembly 13 drives the transmission assembly 32 to move, the transmission assembly 32 enables the seat assembly 2 to rotate relative to the rear leg 12 when moving, and the seat assembly 2 drives the front leg 11 to rotate towards the rear leg 12 through the connecting rod assembly 31.

The connecting rod assembly 31 comprises a first linkage rod 311 with one end rotatably connected to the front leg 11 around a fourth axis D, a second linkage rod 312 with one end rotatably connected to the rear leg 12 around a fifth axis E is arranged on the rear leg, the first linkage rod 311 and the second linkage rod 312 rotate around a sixth axis F, a third linkage rod 313 rotating around a seventh axis G is connected to the first linkage rod 311 or the second linkage rod 312, and the other end of the third linkage rod 313 is rotatably connected to the seat assembly 2 around an eighth axis H. When the seat assembly 2 rotates counterclockwise around the third axis C relative to the rear leg 12, the seat assembly 2 pulls one end of the third link 313 to move, the third link 313 rotates around the eighth axis H relative to the seat assembly 2 when the third link 313 moves along with the seat assembly 2, the other end of the third link 313 rotates around the first link 311 and the second link 312 and pulls the first link 311 and the second link 312 to move, the joint of the first link 311 and the second link 312 rotates around the sixth axis F, the other end of the first link 311 rotates around the fourth axis D relative to the front leg 11, the second link 312 rotates around the fifth axis E relative to the rear leg 12, and at this time, the first link 311 and the second link 312 are close to each other, and the front leg 11 and the rear leg 12 are close to each other under the pull of the first link 311 and the second link 312.

And a reversing assembly 4 which can make the supporting rod assembly 13 rotate back and forth relative to the bottom support frame 1 is arranged between the supporting rod assembly 13 and the bottom support frame 1. The strut assembly 13 can be reversed back and forth by the reversing assembly 4 to facilitate the adult's care of the child seated in the seat assembly 2.

When the supporting rod assembly 13 needs to be rotated and reversed, the first unlocking piece 44 is pulled, the first unlocking piece 44 slides relative to the supporting rod assembly 13, the first pulling rope 45 is driven to move when the first unlocking piece 44 slides, the first pulling rope 45 is driven to slide when the first pulling rope 45 moves, the first locking piece 43 is separated from the first locking position 41 or the second locking position 42, the supporting rod assembly 13 is rotated at the moment, the supporting rod assembly 13 can be rotated and reversed relative to the rear leg 12, when the supporting rod assembly 13 is adjusted in place, the first unlocking piece 44 is released, the elastic element 46 pushes the first unlocking piece 44 to be clamped into the second locking position 42 or the first locking position 41 again, and the supporting rod assembly 13 and the rear leg 12 are locked again at the moment.

The seat assembly 2 comprises a seat rod 21 rotatably connected to the rear leg 12 around a third axis C, a backrest rod 22 capable of rotating relative to the seat rod 21 is connected to the seat rod 21, a grab bar 23 capable of rotating relative to the backrest rod 22 is further arranged between the seat rod 21 and the seat rod 22, and the third linkage rod 313 is rotatably connected to the seat rod 21 around an eighth axis H. The backrest rod 22 can be unfolded or folded rotatably with respect to the seat rod 21.

The transmission assembly 32 comprises a rotating seat 321 which is rotationally connected in the rear leg 12, the rotating seat 321 is connected with the supporting rod assembly 13 and rotates along with the supporting rod assembly 13 when the supporting rod assembly 13 rotates, the rotating seat 321 is provided with a plurality of gear teeth portions 322 along the circumference, a first gear 323 which can be meshed with the gear teeth portions 322 for transmission is arranged on the rear leg 12 and located on the inner side of the gear teeth portions 322, and a second gear 324 which can drive the seat assembly 2 to rotate when the first gear 323 is meshed with the first gear 323 is fixedly connected to the seat rod. When the stay bar assembly 13 rotates relative to the rear leg 12, the rotating base 321 follows the stay bar assembly 13 to rotate clockwise, the gear tooth part 322 on the rotating base 321 drives the first gear 323 to rotate when the rotating base 321 rotates, the first gear 323 rotates clockwise relative to the rear leg 12, the first gear 323 drives the second wheel 324 to rotate when the first gear 323 rotates, the second wheel 324 rotates anticlockwise, and at the moment, the seat rod 21 is driven by the second wheel 324 to rotate anticlockwise relative to the rear leg 12 and rotate towards the rear leg 12.

The rotating seat 321 comprises a first rotating seat 3211 which is arranged on the rear leg 12 and is close to one side of the seat assembly 2, the rotating seat 321 also comprises a second rotating seat 3212 which is connected with the first rotating seat 3211 and is close to the stay bar assembly 13, a plurality of connecting columns 32111 which are connected with the second rotating seat 3212 are arranged on the first rotating seat 3211, a first yielding groove 122 which can be penetrated by the connecting columns 32111 and move inwards is arranged on the rear leg 12, a protruding convex column 123 is further arranged on the rear leg 12, a first gear 323 is connected to the convex column 123, and a second yielding groove 122 which can be penetrated by the convex column 123 and move inwards is arranged on the first rotating seat 3211.

The brace assembly 13 includes a brace 131 rotatably connected to the rear leg 12, the brace 131 is connected with a handle 132 capable of rotating relative to the brace 131, and a locking assembly 5 capable of locking the rotating seat 321 with the rear leg 12 and being driven to unlock when the handle 132 is folded relative to the brace 131 is disposed between the first locking member 43, the rotating seat 321 and the rear leg 12. The locking assembly 5 is used to lock the stay 131, the swivel base 321 and the rear leg 12.

The locking assembly 5 comprises a first clamping groove 51 arranged on the rear leg 12, a second clamping locking piece 52 which can slide relative to the rotating seat 321 and be clamped into or separated from the first clamping groove 51 is connected to the rotating seat 321, the locking assembly 5 further comprises a third clamping locking piece 54 which is connected with the first clamping locking piece 43 through a bolt 53, a third locking position 55 and a fourth locking position 56 which correspond to the first locking position 41 and the second locking position 42 are arranged on the rear leg 12, when the third clamping locking piece 54 is positioned in the third locking position 55 and the handle 132 rotates and folds relative to the supporting rod 131, the third clamping locking piece 54 can be pulled by the handle 132 to be separated from the third locking position 55, the second clamping locking piece 52 is separated from the first clamping groove 51, and an elastic part 57 which can push the third clamping piece 54 to reset is arranged between the third clamping piece 54 and the supporting rod 131. When the stay bar assembly 13 needs to be rotated and reversed, the third locking piece 54 slides along the first locking piece 43 through the latch pin 53, when the first locking piece 43 is separated from the first locking piece 41 or the second locking piece 42, the third locking piece 54 is separated from the third locking piece 55 or the fourth locking piece 56, but at the moment, the third locking piece 54 is positioned in the rear leg 12 and the second locking piece 52 is still clamped in the first clamping groove 51, and the stay bar assembly 13 cannot be rotated and folded relative to the rear leg 12. When the handle bar 132 rotates and folds relative to the supporting rod 131, the handle bar 132 drives the third locking piece 54 to move, the third locking piece 54 is separated from the third locking piece 55 and moves upwards when moving, at this time, the first locking piece 43 is separated from the first locking piece 41, the third locking piece 54 gradually abuts against the second locking piece 52, the second locking piece 52 gradually separates from the first clamping groove 51, and until the bottom ends of the second locking piece 52 and the third locking piece 54 are both positioned in the rotating seat 321, at this time, the supporting rod assembly 13 can only rotate backwards relative to the rear leg 12 and draw close to the rear leg 12.

The seat assembly 2 comprises a seat rod 21 rotatably connected to the rear leg 12 around a third axis C, a backrest rod 22 capable of rotating relative to the seat rod 21 is connected to the seat rod 21, a grab bar 23 capable of rotating relative to the backrest rod 22 is further arranged between the seat rod 21 and the seat rod 22, and the third linkage rod 313 is rotatably connected to the seat rod 21 around an eighth axis H. The seat bar 21 can only pull the third linkage bar 313 to move when rotating relative to the rear leg 12, so that the front leg 11 and the rear leg 12 can rotate and close.

An adjusting component 6 capable of adjusting the inclined gear between the backrest rod 22 and the seat rod 21 is arranged between the backrest rod 22 and the seat rod 21, and a first locking component 7 capable of locking the seat rod 21 and the armrest rod 23 and unlocking when the backrest rod 22 rotates towards the seat rod 21 is arranged between the seat rod 21, the backrest rod 22 and the armrest rod 23.

The adjusting component 6 comprises a plurality of adjusting positions 61 which are arranged on the seat rod 21 in a rotating mode around the circumference, a fourth locking piece 62 which can slide relatively to be separated from the adjusting positions 61 is arranged on the seat rod 21, a second unlocking piece 63 which can move relatively is arranged on the backrest rod 22, a second stay cable 64 which can pull the fourth locking piece 62 to slide is arranged between the second unlocking piece 63 and the fourth locking piece 62, and a first elastic reset piece 65 which can push the fourth locking piece 62 to reset is arranged between the fourth locking piece 62 and the backrest rod 22. When the position of the backrest rod 22 relative to the seat rod 21 needs to be adjusted, the second unlocking piece 63 is operated to drive the second stay cable 64 to move, the second stay cable 64 moves to drive the second locking piece 62 to slide and separate from the adjusting position 61, the backrest rod 22 can be rotated to adjust the gear, when the backrest rod 22 is adjusted to be in place relative to the seat rod 21, the second unlocking piece 63 is released, the first elastic reset piece 65 pushes the second locking piece 62 to lock with the adjusting position 61 again, and at the moment, the seat rod 21 and the backrest rod 22 are locked. When it is desired to fold the seat assembly 2, the adjustment assembly 6 is first unlocked and then the backrest rod 22 is pushed to rotate toward the seat rod 21.

The first locking assembly 7 comprises a left connecting shell 71 arranged on the backrest rod 22 and a right connecting shell 72 arranged on the seat rod 21, a sealing space is enclosed between the left connecting shell 71 and the right connecting shell 72, a first clamping groove 73 is arranged on the grab rod 23, a second clamping groove 74 is arranged on the right connecting shell 72, a first spline 75 capable of transversely moving in the sealing space and simultaneously clamping with the first clamping groove 73 on the grab rod 23 and the second clamping groove 74 on the right connecting shell 72 is arranged in the sealing space, a reset spring 76 capable of resetting the first spline 75 is arranged between the first spline 75 and the right connecting shell 72, and a driving part 77 capable of pushing the first spline 75 to be separated from the first clamping groove 73 on the grab rod 23 during rotation is arranged on the left connecting shell 71. The driving part 77 is a bump provided on the backrest rod 22, and the first spline 75 is provided with a groove capable of accommodating the bump and an inclined plane capable of propping against the bump. When the backrest rod 22 rotates relative to the seat rod 21, the lug on the backrest rod 22 pushes the inclined surface on the first spline 75, at this time, the first spline 75 slides transversely relative to the left connecting shell 71 and the right connecting shell 72, and when the first spline 75 slides, the first locking groove 73 on the armrest rod 23 is separated, at this time, the armrest rod 23 is unlocked, and the armrest rod 23 can rotate relative to the seat rod 21 and be close to the seat rod 21.

A second locking component 8 which can lock the rear leg 12 and the seat rod 21 and the backrest rod 22 is arranged between the rear leg and the seat rod. The seat post 21 can be rotated relative to the rear leg 12 and moved toward the rear leg 12 upon unlocking the second locking assembly 8.

The second locking assembly 8 comprises a locking position 81 arranged on the rear leg 12, a fifth locking piece 82 which can slide relatively to the seat rod 21 and be blocked in or separated from the locking position 81 is arranged on the seat rod 21, a spring 83 which can push the fifth locking piece 82 to reset is arranged between the fifth locking piece 82 and the backrest rod 22, a first pushing inclined plane 821 is arranged on the fifth locking piece 82, a protruding lug 84 is arranged on the backrest rod 22, and a second pushing inclined plane 841 which can be contacted with the first pushing inclined plane 821 and is propped against each other is arranged on the lug 84. When the backrest rod 22 rotates at a distance from the seat rod 21, the protrusion 84 on the backrest rod 22 gradually releases from the second latch 52, the second pushing inclined surface 841 on the protrusion 84 and the first pushing inclined surface 521 of the second latch 52 are mutually attached, and the first pushing inclined surface 521 is pushed by the second pushing inclined surface 841, so that the fifth latch 82 is gradually released from the locking position 81.

A third locking component 133 capable of locking the stay bar 131 and the handle bar 132 is arranged between the stay bar and the handle bar.

The third locking assembly 133 comprises a left connecting shell 1331 arranged on the stay rod 131 and a right connecting shell 1332 arranged on the handle rod 132, a sealing space is enclosed between the left connecting shell 1331 and the right connecting shell 1332, spline grooves 1333 are formed in the left connecting shell 1331 and the right connecting shell 1332, a second spline 1334 capable of transversely moving in the sealing space and being clamped with the spline grooves 1333 in the left connecting shell 1331 and the right connecting shell 1332 is arranged in the sealing space, an elastic reset piece 1335 capable of pushing the second spline 1334 is arranged between the first spline 55 and the left connecting shell 1331, a rotating piece 1336 capable of pushing the second spline 1334 to be separated from the right connecting shell 1332 is arranged between the second spline 1334 and the right connecting shell 1332, an operating piece 1337 capable of operating is arranged on the handle rod 132, a pushing piece 1336 is arranged between the operating piece 1337 and the rotating piece 1336, a pushing piece 1338 capable of driving the third spline 1336 to rotate is arranged between the pushing piece 1334 and the right connecting shell 1332, and the pushing piece 1334 can be unlocked by the pushing piece 1334 is further arranged on the pushing piece 1332, and the pushing piece 1334 can be rotated by the pushing piece 1334 is arranged on the pushing piece 1332 when the second spline 2 is separated from the right connecting shell 1332, and the pushing piece is arranged on the rotating rod 1332, and the pushing piece is provided with a jack-unlocking piece 59.

When the child cart needs to be folded, the operation piece 1337 is pressed, the operation piece 1337 drives the third stay cable 1338 to move, the third stay cable 1338 drives the rotating piece 1336 to rotate when moving, the rotating piece 1336 is pushed by the pushing part 1339 to move transversely, at the moment, the second spline 1334 is pushed by the rotating piece 1336 to be separated from the spline groove 1333 on the right connecting shell 1332 and completely enter the left connecting shell 1331, the pushing part 13321 pushes the rotating unlocking piece 58 to rotate when the handle bar 132 rotates, and at the moment, the unlocking piece 58 drives the fourth stay cable 59 to unlock the locking assembly 5.

Claims

1. A child stroller movable from an unfolded position to a folded position upon unlocking a locking device, characterized in that: including can expand or folding bottom sprag frame (1), bottom sprag frame (1) include preceding leg (11) and around first axis (A) rotate rear leg (12) of being connected on preceding leg (11), preceding leg (11) on be connected with front wheel (111), rear leg (12) on be connected with rear wheel (121), bottom sprag frame (1) on still be connected with relative it around second axis (B) pivoted brace subassembly (13), bottom sprag frame (1) on still be connected with relative it around third axis (C) pivoted seat subassembly (2), seat subassembly (2) can follow expansion position and remove to folding position, seat subassembly (2), preceding leg (11), rear leg (12) and brace subassembly (13) between be equipped with and draw in to seat subassembly (2) and to seat subassembly (12) and draw in to seat subassembly (12) and can make seat subassembly (2) rotate and draw in to seat subassembly (1) and draw in to seat subassembly (12) and can make seat subassembly (3) and drive leg (3) to draw in and drive structure (3) including locating the seat subassembly (3) and drive leg (3) and drive mechanism to draw in the seat subassembly and drive mechanism to drive motor, the utility model provides a seat, seat assembly (2) and bottom support frame (1) are rotated in the time of and seat assembly (2) relatively, can make preceding leg (11) and back leg (12) rotate link assembly (31) of drawing close together, drive structure (3) still including locating between seat assembly (2), preceding leg (11), back leg (12) and vaulting pole subassembly (13) and can drive seat assembly (2) relatively bottom support frame (1) pivoted transmission subassembly (32) when vaulting pole subassembly (13) rotate, link assembly (31) include one end around fourth axis (D) rotation connect first interlock pole (311) on preceding leg (11), back leg (12) on be equipped with one end around second interlock pole (312) of fifth axis (E) rotation connection, first interlock pole (311) and second interlock pole (312) between rotate around sixth axis (F), first interlock pole (311) or second interlock pole (312) on be connected with on the other end around third axis (313) of rotation of third axis (G) on the seat (313) rotation subassembly (H).

2. The stroller of claim 1, wherein: a reversing component (4) which can enable the supporting rod component (13) to rotate and reverse back and forth relative to the bottom supporting frame (1) is arranged between the supporting rod component (13) and the bottom supporting frame (1).

3. The stroller of claim 2, wherein: the reversing assembly (4) comprises a first locking position (41) and a second locking position (42) which are arranged on the rear leg (12) and can correspond to the front side position and the rear side position of the stay bar assembly (13), the stay bar assembly (13) is provided with a first locking part (43) which can slide relatively to be clamped into or separated from the first locking position (41) or the second locking position (42), the stay bar assembly (13) is connected with a first unlocking part (44) which can slide relatively to the stay bar assembly, a first stay cable (45) is arranged between the first unlocking part (44) and the first locking part (43), and an elastic element (46) which can push the first locking part (43) to reset is arranged between the first locking part (43) and the stay bar assembly (13).

4. A stroller according to claim 3, wherein: the seat assembly (2) comprises a seat rod (21) which is rotatably connected to the rear leg (12) around a third axis (C), a backrest rod (22) which can rotate relative to the seat rod is connected to the seat rod (21), a grab rail (23) which can rotate relative to the backrest rod (22) is further arranged between the backrest rod (22) and the seat rod (21), and the third linkage rod (313) is rotatably connected to the seat rod (21) around an eighth axis (H).

5. The stroller of claim 4, wherein: the transmission assembly (32) include rotating seat (321) of rotating connection in rear leg (12), rotating seat (321) be connected with vaulting pole subassembly (13) and follow vaulting pole subassembly (13) and rotate when vaulting pole subassembly (13) rotate, rotating seat (321) be provided with a plurality of teeth of a cogwheel portion (322) along the circumference, rear leg (12) on and lie in the inboard of teeth of a cogwheel portion (322) be equipped with can with teeth of a cogwheel portion (322) meshing driven first gear (323), the seat pole on fixedly connected with first gear (323) meshing and can drive seat subassembly (2) pivoted second gear (324) when making first gear (323) rotate.

6. The stroller of claim 5, wherein: the stay bar assembly (13) comprises stay bars (131) which are rotatably connected to the rear legs (12), the stay bars (131) are connected with handle bars (132) which can rotate relative to the stay bars, and locking assemblies (5) which can lock the first locking members (43) and the rotating seats (321) and can be driven to unlock when the handle bars (132) are rotated and folded relative to the stay bars (131) are arranged between the first locking members (43) and the rotating seats (321).

7. The stroller of claim 6, wherein: the locking assembly (5) comprises a first clamping groove (51) arranged on the rear leg (12), a second clamping lock piece (52) which can slide relatively to the rotating seat (321) and is clamped into or separated from the first clamping groove (51) is connected with the rotating seat, the locking assembly (5) further comprises a third clamping lock piece (54) connected with the first clamping lock piece (43) through a bolt (53), the rear leg (12) is provided with a third clamping lock position (55) and a fourth clamping lock position (56) which correspond to the positions of the first clamping lock position (41) and the second clamping lock position (42), when the third clamping lock piece (54) is positioned in the third clamping lock position (55) and the handle rod (132) rotates and is folded relatively to the supporting rod (131), the third clamping lock piece (54) can be pulled by the handle rod (132) to be separated from the third clamping lock position (55) and the second clamping lock piece (52) is enabled to be separated from the first clamping groove (51), and an elastic pushing component (57) can be arranged between the third clamping lock piece (54) and the supporting rod (131).

8. The stroller of claim 4, wherein: the seat comprises a backrest rod (22) and a seat rod (21), an adjusting component (6) capable of adjusting an inclined gear between the backrest rod and the seat rod is arranged between the backrest rod (22) and the seat rod (21), a fifth clamping lock piece (82) capable of locking the seat rod (21) and the seat rod (23) and being unlocked when the backrest rod (22) rotates towards the seat rod (21), a spring (83) capable of resetting the fifth clamping lock piece (82) is arranged between a rear leg (12) and the seat rod (21) and between the backrest rod (22), a second locking component (8) capable of locking the rear leg and the seat rod (21) is arranged between the rear leg (12) and the backrest rod (22), the second locking component (8) comprises a locking position (81) arranged on the rear leg (12), the seat rod (21) is provided with a fifth clamping lock piece (82) capable of sliding relatively to be clamped in or separated from the locking position (81), the fifth clamping lock piece (82) is arranged between the fifth clamping lock piece (82) and the backrest rod (22), the fifth clamping lock piece (82) is provided with a spring (83) capable of resetting the fifth clamping lock piece (82), and the second clamping lock piece (84) is provided with a protruding pushing lug (821) and a pushing lug (84) capable of being contacted with a pushing lug (841.