Baby stroller

Abstract

The utility model discloses a child stroller which can move from an unfolding position to a folding position after a locking device is unlocked, the child stroller comprises a frame capable of being folded or unfolded, the frame is connected with a seat assembly, the seat assembly comprises a seat part connected to the frame, and the seat part is connected to the frame. The seat part is connected with a backrest part which can be rotationally unfolded or folded relative to the seat part, armrest parts which can be rotationally unfolded or folded relative to the seat part and the backrest part are connected between the seat part and the backrest part, and a first locking assembly which can lock the seat part and the backrest part is arranged between the seat part and the backrest part. And a second locking assembly which can lock the seat part and the armrest part and can be driven by the backrest part to be unlocked when the backrest part rotates to be folded towards the seat part is arranged between the seat part and the armrest part. The utility model aims to overcome the defects in the prior art, and provides the baby stroller which is convenient to fold and unfold the seat assembly, simple in folding structure and small in size after being folded.

Description

[Technical field]

[0001] The utility model relates to a baby stroller. [Background technology]

[0002] A stroller is a type of carrying and moving tool designed for babies (or young children). It is convenient for adults to take babies out to play or go shopping, etc. It can also appropriately hold small and light items and is loved by many parents.

[0003] The seat assembly of a stroller generally includes a seat, a backrest and an armrest. There are two types of strollers currently on the market. The first type is a seat that cannot be stored, which takes up a large space when the stroller is idle. The second type is a seat with a backrest and an armrest that can be folded and stored. When the stroller is idle, the backrest and the armrest can be folded to fit closely with the seat. Compared with the first type of seat, the second type of seat can reduce the space occupied by the backrest, which is more convenient for transportation and storage. However, the existing seat assembly generally has a locking structure between the seat and the backrest, and another locking structure between the seat and the armrest. When the user folds the seat assembly, he needs to unlock it twice, which is troublesome. In addition, the two locking structures make the connection between the seat and the backrest large and inconvenient to use. [Contents of the utility model]

[0004] The utility model aims to overcome the shortcomings of the prior art and provide a child stroller with a seat assembly that is easy to fold and unfold, a simple folding structure and a small volume after folding.

[0005] The utility model is realized by the following technical solutions:

[0006] A child stroller, which can be moved from an unfolded position to a folded position after a locking device is unlocked, comprises a frame 100 that can be folded or unfolded, a seat assembly 4 connected to the frame 100, the seat assembly 4 comprising a seat portion 41 connected to the frame 100, a backrest portion 42 that can be rotated, unfolded or folded relative to the seat portion 41 connected to the seat portion 41, an armrest portion 43 that can be rotated, unfolded or folded relative to the seat portion 41 and the backrest portion 42 is connected between the seat portion 41 and the backrest portion 42, a first locking assembly 44 that can lock the seat portion 41 and the backrest portion 42 is provided between the seat portion 41 and the armrest portion 43, a second locking assembly 45 that can lock the seat portion 41 and the armrest portion 43 and can be driven to unlock by the backrest portion 42 when the backrest portion 42 is rotated and folded toward the seat portion 41, the first locking assembly 44 comprising a left shell 441 provided on the seat portion 41 and a right shell 44 provided on the backrest portion 42. 42, the left shell 441 and the right shell 442 are both provided with a clamping groove 443, the left shell 441 and the right shell 442 form a closed space, the closed space is provided with a first clamping member 444 which can move laterally therein and can be engaged with the clamping grooves 443 on the left shell 441 and the right shell 442, a first elastic reset member 445 is further provided between the first clamping member 444 and the left shell 441, a pushing member 446 is provided between the right shell 442 and the first clamping member 444, which can push the first clamping member 444 to disengage from the clamping groove 443 on the right shell 442 when moving, an operating member 447 is provided on the backrest portion 42, a cable 448 which can drive the first clamping member 444 to move is provided between the operating member 447 and the pushing member 446, and a second elastic reset member which can push the operating member 447 to reset is provided between the operating member 447 and the backrest portion 42.

[0007] The second locking assembly 45 includes a card slot 451 provided on the left shell body 441 and the armrest portion 43, and a second card connector 452 that can engage with the card slot 451 on the left shell body 441 and the armrest portion 43 is provided between the first card connector 444 and the left shell body 441. A driving portion 453 is provided on the backrest portion 42, which can push the second card connector 452 to slide and disengage from the card slot 451 on the armrest portion 43 when the backrest portion 42 is rotated and folded relative to the seat portion 41. A third elastic reset member 454 that can push the second card connector 452 to reset is provided between the second card connector 452 and the left shell body 441.

[0008] The frame 100 includes a front leg 11, the front leg 11 is connected to a rear leg 12 that rotates relative to the front leg around a first axis A, the rear leg 12 is connected to a support rod 13 that rotates relative to the front leg around a second axis B, the frame 100 also includes a seat mounting base 2 that is rotatably connected to the front leg 11 around a third axis C, the seat assembly 4 is connected to the mounting base 2, and a linkage assembly 3 is provided between the seat mounting base 2, the front leg 11 and the rear leg 12, which can drive the seat mounting base 2 to rotate and move closer to the front leg 11 when the front leg 11 rotates and moves closer to the rear leg 12, the linkage assembly 3 includes a sliding seat 31 slidably connected to the front leg 11, and the sliding seat A first connecting rod 32 capable of rotating relative to the front leg 31 and the rear leg 12 is provided between the front leg 31 and the rear leg 12, one end of the first connecting rod 32 is connected to the sliding seat 31 by rotation around the fourth axis D, and the other end of the first connecting rod 32 is connected to the rear leg 12 by rotation around the fifth axis E, a second connecting rod 33 capable of rotating relative to the front leg 31 and the seat mounting seat 2 is connected, one end of the second connecting rod 33 is connected to the sliding seat 31 by rotation around the sixth axis F, and the other end of the second connecting rod 33 is connected to the front end of the seat mounting seat 2 by rotation around the seventh axis G, the front leg 11 is provided with a front wheel 111, and the rear leg 12 is provided with a rear wheel 121.

[0009] The seat portion 41 is rotatably connected to the seat mounting base 2 , and a locking assembly 5 is provided between the seat portion 41 and the seat mounting base 2 to lock the two.

[0010] The locking assembly 5 includes a first locking position 51 which is arranged on the seat portion 41 and corresponds to the forward position of the seat assembly 4, and a second locking position 52 which corresponds to the reverse position of the seat assembly 4. The seat mounting base 2 is connected with a sliding member 53 which can slide relative to it and engage in or disengage from the first locking position 51 or the second locking position 52. The sliding member 53 is provided with an operating portion 54 which protrudes out of the seat mounting base 2. An elastic element which can push the sliding member 53 to reset is provided between the sliding member 53 and the seat mounting base 2.

[0011] The locking device includes a locking structure 7 arranged between the front leg 11, the rear leg 12 and the support rod 13, and the locking structure 7 includes a first locking component 71 arranged between the front leg 11 and the rear leg 12 and a second locking component 72 arranged between the front leg 11 and the support rod 13. The support rod 13 is connected to a first unlocking member 73 that can unlock the first locking component 71 when the support rod 13 rotates. The support rod 13 is also connected to a second unlocking member 74 that can move relative to the support rod. The support rod 13 is provided with a pushing member 75 that can make the second unlocking member 74 move and unlock the second locking component 72 when pushed.

[0012] The second locking assembly 72 includes a left connecting shell 721 provided on the front leg 11 and a right connecting shell 722 provided on the support rod 13, wherein the left connecting shell 721 and the right connecting shell 722 are both provided with a first spline groove 723, and the left connecting shell 721 and the right connecting shell 722 form a sealed space, wherein the sealed space is provided with a first spline 724 which can move laterally therein and can be engaged with the first spline groove 723 on the left connecting shell 721 and the right connecting shell 722 at the same time, and the first spline 724 is engaged with the left connecting shell 721 and the right connecting shell 722. A first return spring 725 is also provided between the shells 721, and the second unlocking member 74 is provided between the support rod 13 and the first spline 724. The support rod 13 is provided with a pushing block 131 which can push the first spline 724 out of the first spline groove 723 on the right connecting shell 722. The second unlocking member 74 is provided with a first accommodating groove 741 which can accommodate the pushing block 131. The second unlocking member 74 is also provided with a first pushing surface 742 which can be pushed by the pushing block 131 and is located at the first accommodating groove 741.

[0013] The second unlocking member 74 includes a rotating ring 743 rotatably connected to the support rod 13 , and the rotating ring 743 is provided with a pushing protrusion 7431 protruding outward and capable of being pushed by the pushing member 75 , and the first accommodating groove 741 and the first pushing surface 742 are provided on the rotating ring 743 .

[0014] The first locking assembly 71 includes a left rotating shell 711 provided on the front leg 11 and a right rotating shell 712 provided on the rear leg 12, wherein the left rotating shell 711 and the right rotating shell 712 are both provided with a second spline groove 713, and the left rotating shell 711 and the right rotating shell 712 form a sealed space, wherein the sealed space is provided with a second spline 714 which can move laterally therein and can be engaged with the first spline groove 723 on the left rotating shell 711 and the right rotating shell 712 at the same time, and the second spline A second return spring 715 is also provided between 714 and the right rotating shell 712, the second spline 714 is provided with a second accommodating groove 7141, the first unlocking member 73 is provided with a pushing block 731 which can be inserted into the second accommodating groove 7141 and can push the second spline 714 out of the second spline groove 713 on the left rotating shell 711 when rotating, and a second pushing surface 7142 which can be pushed by the pushing block 731 is also provided on the second spline 714 and located at the second accommodating groove 7141.

[0015] The rear leg 12 includes a rod body 122 , and a cross bar 123 is connected to the rod body 122 and is transversely passed through the front leg 11 and the support rod 13 . The first unlocking member 73 is connected to the support rod 13 and sleeved on the cross bar 123 .

[0016] Compared with the prior art, the utility model has the following advantages: when the child stroller is folded, the seat assembly needs to be unlocked first, and the operating member is operated. After the operating member is operated, the cable is driven to move, and when the cable moves, the pushing member is driven to move. When the pushing member moves, the first clamping member is pushed to slide horizontally and disengage from the clamping groove on the right shell and enter the left shell completely. At this time, the backrest can be rotated and folded relative to the seat part. In the process of rotating and folding the backrest toward the seat part, the backrest unlocks the second locking assembly, and the unlocking and folding of the seat assembly can be completed by lifting and turning, which is convenient to operate. The first locking assembly and the second locking assembly are stacked, which can reduce the size of the connection between the backrest and the seat part, making the seat assembly structure more compact.

Brief Description of the Drawings

[0017] Figure 1 It is one of the three-dimensional diagrams of the child stroller of the utility model;

[0018] Figure 2 It is a side view of the child stroller of the utility model;

[0019] Figure 3 This is one of the state diagrams of the utility model baby stroller when folded;

[0020] Figure 4 This is the second state diagram of the child stroller of the utility model when it is folded;

[0021] Figure 5 This is the third state diagram of the child stroller of the utility model when it is folded;

[0022] Figure 6 It is a three-dimensional diagram of a seat assembly in the child stroller of the utility model;

[0023] Figure 7 This is one of the exploded views of the seat assembly in the child stroller of the utility model;

[0024] Figure 8 This is the second exploded view of the seat assembly in the child stroller of the utility model;

[0025] Fig. 9 This is the third exploded view of the seat assembly in the child stroller of the utility model;

[0026] Fig.10 This is the fourth exploded view of the seat assembly in the child stroller of the utility model;

[0027] Fig.11 This is the second stereoscopic diagram of the child stroller of the utility model;

[0028] Fig.12 It is a three-dimensional diagram of a seat assembly in the child stroller of the utility model;

[0029] Fig.13It is a three-dimensional diagram of a seat mounting base in the child stroller of the utility model;

[0030] Fig.14 This is one of the exploded views of the utility model baby stroller;

[0031] Fig.15 This is the second exploded view of the child stroller of the utility model;

[0032] Fig.16 This is the third exploded view of the utility model baby stroller;

[0033] Fig.17 This is the fourth exploded view of the child stroller of the utility model;

[0034] Fig.18 This is the fifth exploded view of the child stroller of the utility model;

[0035] Fig.19 It is a three-dimensional diagram of the second unlocking member and the pushing member in the child stroller of the utility model. [Specific implementation method]

[0036] The utility model is further described below in conjunction with the accompanying drawings:

[0037] like Figures 1 to 19As shown, the utility model provides a child stroller, which can be moved from an unfolded position to a folded position after a locking device is unlocked, and includes a frame 100 that can be folded or unfolded, a seat assembly 4 connected to the frame 100, and the seat assembly 4 includes a seat portion 41 connected to the frame 100, a backrest portion 42 that can be rotated, unfolded or folded relative to the seat portion 41 is connected to the seat portion 41, an armrest portion 43 that can be rotated, unfolded or folded relative to the seat portion 41 and the backrest portion 42 is connected between the seat portion 41 and the backrest portion 42, and a first locking assembly 44 that can lock the seat portion 41 and the backrest portion 42 is provided between the seat portion 41 and the backrest portion 42. A second locking assembly 45 is provided between the seat portion 41 and the armrest portion 43, which can lock the two and can be unlocked by the backrest portion 42 when the backrest portion 42 is rotated and folded toward the seat portion 41. The first locking assembly 44 includes a left shell 441 provided on the seat portion 41 and a right shell 442 provided on the backrest portion 42. The left shell 441 and the right shell 442 are both provided with a snap-in groove 443. The left shell 441 and the right shell 442 form a closed space, and a snap-in groove 443 is provided in the closed space, which can move laterally therein and can be snap-fitted with the snap-in grooves 443 on the left shell 441 and the right shell 442. A first clamping member 444 is provided, and a first elastic reset member 445 is also provided between the first clamping member 444 and the left shell 441. A pushing member 446 is provided between the right shell 442 and the first clamping member 444, which can push the first clamping member 444 out of the clamping groove 443 on the right shell 442 when moving. An operating member 447 is provided on the backrest portion 42, and a cable 448 capable of driving the first clamping member 444 to move is provided between the operating member 447 and the pushing member 446. A second elastic reset member 445 capable of pushing the operating member 447 to reset is provided between the operating member 447 and the backrest portion 42. The second locking component 45 includes a card slot 451 provided on the left shell body 441 and the armrest portion 43, and a second card connector 452 capable of engaging with the card slot 451 on the left shell body 441 and the armrest portion 43 is provided between the first card connector 444 and the left shell body 441. A driving portion 453 is provided on the backrest portion 42, which can push the second card connector 452 to slide and disengage from the card slot 451 on the armrest portion 43 when the backrest portion 42 is rotated and folded relative to the seat portion 41. A third elastic reset component 454 capable of pushing the second card connector 452 to reset is provided between the second card connector 452 and the left shell body 441.

[0038] When the stroller is folded, the seat assembly 4 needs to be unlocked first, and the operating member 447 is operated. After the operating member 447 is operated, the cable 448 is driven to move. When the cable 448 moves, the pushing member 446 is driven to move. When the pushing member 446 moves, it pushes the first clamping member 444 to slide horizontally and disengage from the clamping groove 443 on the right shell 442 and completely enter the left shell 441. At this time, the backrest 42 can be rotated and folded relative to the seat part 41. During the process of rotating and folding the backrest 42 toward the seat part 41, the driving part 453 on the backrest 42 pushes the second clamping member 452 to make the second clamping member 452 slide horizontally relative to the left shell 441 and the armrest 43, and the second clamping member 452 is gradually The armrest 43 gradually disengages from the card slot 451 on the armrest portion 43 and completely enters into the left shell body 441. At this time, the armrest portion 43 can be rotated relative to the seat portion 41 and folded toward the seat portion 41, until the armrest portion 43 and the seat portion 41 are close to each other and the backrest portion 42 and the seat portion 41 are close to each other, the entire seat assembly 4 is folded, and then the locking device is unlocked, and the frame 100 is folded, thereby completing the folding of the entire vehicle. The folding of the seat assembly 4 only requires lifting and pulling the operating member 447 to unlock the first locking assembly 44, and then pushing the backrest portion 42 to rotate toward the seat portion 41. During the folding process of the backrest portion 42, the backrest portion 42 unlocks the second locking assembly 45. The unlocking and folding of the seat assembly 4 can be completed by just lifting and turning, which is easy to operate.

[0039] The right housing 442 is provided with a plurality of first push protrusions 4421, the first push protrusions 4421 are provided with a first inclined sliding surface 4422, the push component 446 is provided with a first receiving groove 4461 capable of accommodating the first push protrusions 4421, and the push component 446 is provided with a second inclined sliding surface 4462 located at the first receiving groove 4461, which can cooperate with the first inclined sliding surface 4422 to push the push component 446 to slide horizontally. When the cable 448 pulls the push component 446 to rotate, the first inclined sliding surface 4422 and the second inclined sliding surface 4462 touch each other and press and push the push component 446 to move horizontally, thereby pushing the first clamping member 444 to move and unlock.

[0040] The driving part 453 includes a plurality of second pushing protrusions 4531 disposed on the right housing 442, the second pushing protrusions 4531 are provided with a third inclined sliding surface 4532, the second clamping member 452 is provided with a second receiving groove 4521 capable of accommodating the second pushing protrusions 4531, and the second clamping member 452 is provided with a fourth inclined sliding surface 4522 capable of cooperating with the third inclined sliding surface 4532 to push the second clamping member 452 to slide horizontally. When the backrest portion 42 rotates toward the seat portion 41, the third inclined sliding surface 4532 touches the fourth inclined sliding surface 4522 to push the second clamping member 452 to move horizontally and unlock.

[0041] like Figures 1 to 15 As shown, the frame 100 includes a front leg 11, the front leg 11 is connected to a rear leg 12 that rotates relative to the front leg around a first axis A, the rear leg 12 is connected to a support rod 13 that rotates relative to the front leg around a second axis B, the frame 100 also includes a seat mounting base 2 that is rotatably connected to the front leg 11 around a third axis C, the seat assembly 4 is connected to the mounting base 2, and a linkage assembly 3 is provided between the seat mounting base 2, the front leg 11 and the rear leg 12, which can drive the seat mounting base 2 to rotate and move closer to the front leg 11 when the front leg 11 rotates and moves closer to the rear leg 12, the linkage assembly 3 includes a sliding seat 31 slidably connected to the front leg 11, and the sliding seat 31 is connected to the front leg 11. A first connecting rod 32 capable of rotating relative to the seat 31 and the rear leg 12 is provided between the seat 31 and the rear leg 12. One end of the first connecting rod 32 is connected to the sliding seat 31 around the fourth axis D, and the other end of the first connecting rod 32 is connected to the rear leg 12 around the fifth axis E. A second connecting rod 33 capable of rotating relative to the sliding seat 31 and the front end of the seat mounting seat 2 is connected. One end of the second connecting rod 33 is connected to the sliding seat 31 around the sixth axis F, and the other end of the second connecting rod 33 is connected to the front end of the seat mounting seat 2 around the seventh axis G. The front leg 11 is provided with a front wheel 111, and the rear leg 12 is provided with a rear wheel 121. The first axis A is coaxially connected with the second axis B.

[0042] When the stroller needs to be folded, the locking device is first unlocked, and then the support rod 13 is pushed to rotate relative to the rear leg 12 around the second axis B, and then the rear leg 12 is pulled to move upward. Under the action of its own weight, the rear end of the seat mounting seat 2 rotates relative to the front leg 11 around the third axis C, and the seat mounting seat 2 drives the second connecting rod 33 to move. One end of the second connecting rod 33 rotates relative to the front end of the seat mounting seat 2 around the seventh axis G, and the other end rotates relative to the sliding seat 31 around the sixth axis F. When the second connecting rod 33 moves, it also drives the sliding seat 31 to slide along the front leg 11. The sliding seat 31 slides on the sliding When the stroller 31 is in motion, the first connecting rod 32 is driven to move, and the first connecting rod 32 rotates around the fourth axis D relative to the sliding seat 31. The other end of the first connecting rod 32 rotates around the fifth axis E relative to the rear leg 12. At this time, the front leg 11 is driven to rotate toward the rear leg 12, and the front leg 11 rotates and approaches the rear leg 12 around the first axis A, and the seat mounting seat 2 gradually approaches the front leg 11 until the seat mounting seat 2 and the front leg 11 are close to each other, the front leg 11 and the rear leg 12 are close to each other, and the support rod 13 and the rear leg 12 are close to each other. The entire stroller is folded, and the utility model is easy to fold.

[0043] The seat portion 41 is rotatably connected to the seat mounting base 2, and a locking assembly 5 capable of locking the seat portion 41 and the seat mounting base 2 is provided between the seat portion 41 and the seat mounting base 2. The seat assembly 4 is locked in the forward position and the reverse position by the locking assembly 5.

[0044] The locking assembly 5 includes a first locking position 51 and a second locking position 52, which are arranged on the seat portion 41 and correspond to the forward position of the seat assembly 4, and a second locking position 52, which corresponds to the reverse position of the seat assembly 4. The seat mounting seat 2 is connected with a sliding member 53, which can slide relative to the seat mounting seat 2 to engage in or disengage from the first locking position 51 or the second locking position 52. The sliding member 53 is provided with an operating portion 54 protruding out of the seat mounting seat 2. An elastic element capable of pushing the sliding member 53 to reset is provided between the sliding member 53 and the seat mounting seat 2. When the seat assembly 4 is in the forward position, the seat assembly 4 faces the front side, and when the seat assembly 4 is in the reverse position, the seat assembly 4 faces the rear side. When the seat assembly 4 needs to be rotated to change direction, the pushing operating part 54 is pushed to drive the sliding member 53 to slide, thereby disengaging from the first locking position 51. At this time, the seat assembly 4 can be rotated and changed direction relative to the seat mounting base 2. After the seat assembly 4 completes the reversal, the sliding member 53 gradually aligns with the second locking position 52. Under the push of the elastic element, the sliding member 53 gradually snaps into the second locking position 52. At this time, the seat assembly 4 is locked again in the position after the reversal.

[0045] An elastic component 6 is provided between the second linkage rod 33 and the seat mounting seat 2. The elastic component 6 can be shockproof, making the child more comfortable when riding.

[0046] The locking device includes a locking structure 7 arranged between the front leg 11, the rear leg 12 and the support rod 13, and the locking structure 7 includes a first locking component 71 arranged between the front leg 11 and the rear leg 12 and a second locking component 72 arranged between the front leg 11 and the support rod 13. The support rod 13 is connected to a first unlocking member 73 that can unlock the first locking component 71 when the support rod 13 rotates. The support rod 13 is also connected to a second unlocking member 74 that can move relative to the support rod. The support rod 13 is provided with a pushing member 75 that can make the second unlocking member 74 move and unlock the second locking component 72 when pushed. When the front leg 11, the rear leg 12 and the strut 13 need to be folded, the second unlocking piece 74 is pushed and the second unlocking piece 74 rotates relative to the strut 13. When the second unlocking piece 74 rotates, the second unlocking piece 74 unlocks the second locking assembly 72. At this time, the strut 13 can rotate relative to the front leg 11 and rotate closer to the rear leg 12. When the strut 13 is pushed to rotate relative to the rear leg 12 around the second axis B, the first unlocking piece 73 connected to the strut 13 rotates with the strut 13, thereby unlocking the first locking assembly 71. At this time, the front leg 11 can rotate relative to the rear leg 12 around the first axis A. The entire unlocking and folding process is very simple. You only need to push the second unlocking piece 74 to rotate, and then after the second locking assembly 72 is unlocked, push the strut 13 to rotate closer to the rear leg 12.

[0047] The second locking assembly 72 includes a left connecting shell 721 provided on the front leg 11 and a right connecting shell 722 provided on the support rod 13, wherein the left connecting shell 721 and the right connecting shell 722 are both provided with a first spline groove 723, and the left connecting shell 721 and the right connecting shell 722 form a sealed space, wherein the sealed space is provided with a first spline 724 which can move laterally therein and can be engaged with the first spline groove 723 on the left connecting shell 721 and the right connecting shell 722 at the same time, and the first spline 724 is engaged with the left connecting shell 721 and the right connecting shell 722. A first return spring 725 is also provided between the shells 721, and the second unlocking member 74 is provided between the support rod 13 and the first spline 724. The support rod 13 is provided with a pushing block 131 which can push the first spline 724 out of the first spline groove 723 on the right connecting shell 722. The second unlocking member 74 is provided with a first accommodating groove 741 which can accommodate the pushing block 131. The second unlocking member 74 is also provided with a first pushing surface 742 which can be pushed by the pushing block 131 and is located at the first accommodating groove 741. When it is necessary to unlock the second locking assembly 72, the pushing member 75 is pushed to move, and when the pushing member 75 moves, it pushes the second unlocking member 74 to move. When the second unlocking member 74 rotates, the first accommodating groove 741 and the first pushing surface 742 on the second unlocking member 74 rotate accordingly, and the first pushing surface 742 gradually contacts the pushing block 131 on the support rod 13, and with the cooperation of the pushing block 131, the second unlocking member 74 moves laterally relative to the support rod 13, and the second unlocking member 74 pushes the first spline 724 to make the first spline 724 disengage from the right connecting shell 722 and completely enter the left connecting shell 721. At this time, the second locking assembly 72 is unlocked, and the support rod 13 can rotate relative to the front leg 11 and fold toward the rear leg 12.

[0048] The second unlocking member 74 includes a rotating ring 743 rotatably connected to the support rod 13, and the rotating ring 743 is provided with a pushing protrusion 7431 protruding outward and capable of being pushed by the pushing member 75, and the first receiving groove 741 and the first pushing surface 742 are provided on the rotating ring 743. The pushing protrusion 7431 protrudes out of the rotating ring 743, so that the pushing member 75 can push.

[0049] The first locking assembly 71 includes a left rotating shell 711 provided on the front leg 11 and a right rotating shell 712 provided on the rear leg 12, wherein the left rotating shell 711 and the right rotating shell 712 are both provided with a second spline groove 713, and the left rotating shell 711 and the right rotating shell 712 form a sealed space, wherein the sealed space is provided with a second spline 714 which can move laterally therein and can be engaged with the first spline groove 723 on the left rotating shell 711 and the right rotating shell 712 at the same time, and the second spline A second return spring 715 is also provided between 714 and the right rotating shell 712, the second spline 714 is provided with a second accommodating groove 7141, the first unlocking member 73 is provided with a pushing block 731 which can be inserted into the second accommodating groove 7141 and can push the second spline 714 out of the second spline groove 713 on the left rotating shell 711 when rotating, and a second pushing surface 7142 which can be pushed by the pushing block 731 is also provided on the second spline 714 and located at the second accommodating groove 7141. When the support rod 13 rotates relative to the rear leg 12, the first unlocking member 73 rotates with the support rod 13, and the pushing block 731 on the first unlocking member 73 gradually rotates in the second accommodating groove 7141 and cooperates with the second pushing surface 7142 to push the second spline 714 to slide horizontally, and the second spline 714 gradually disengages from the left rotating shell 711 and enters into the right rotating shell 712. At this time, the first locking assembly 71 is unlocked, and the front leg 11 can rotate relative to the rear leg 12 and move closer to the rear leg 12.

[0050] The rear leg 12 includes a rod body 122, and a cross bar 123 is connected to the rod body 122 and is transversely passed through the front leg 11 and the support rod 13. The first unlocking member 73 is connected to the support rod 13 and sleeved on the cross bar 123. The rod body 122 connects the front leg 11 and the support rod 13 through the cross bar 123, and the cross bar 123 also facilitates the rotation of the front leg 11 and the support rod 13.

[0051] The support rod 13 includes a rotating seat 132 rotatably connected to the cross bar 123, and a connecting rod 133 is also connected to the rotating seat 132. A clamping structure 8 capable of connecting the rotating seat 132 and the first unlocking member 73 is provided between the rotating seat 132 and the first unlocking member 73. The clamping structure 8 is used to connect the rotating seat 132 and the first unlocking member 73, ensuring that the first unlocking member 73 can rotate with the support rod 13 when the support rod 13 rotates to unlock the first locking assembly 71.

[0052] The first unlocking member 73 includes a rotating shaft 732 which is sleeved on the cross bar 123 and can rotate relative to the cross bar 123. The pushing block 731 is arranged at the front end of the rotating shaft 732. The clamping structure 8 includes a plurality of clamping grooves 81 arranged on the rear end of the rotating shaft 732. The rotating seat 131 is provided with a clamping protrusion 82 which can be clamped into the clamping groove 81. Through the cooperation between the clamping groove 81 and the clamping protrusion 82, the rotating seat 132 can drive the rotating shaft 732 to rotate when it rotates, and the connection is more stable.

[0053] The support rod 13 is connected with a push rod 14 that can slide relative to the support rod 13 to push the push member 75 to slide and move the second unlocking member 74. The push rod 14 is used to push the push member 75 to slide and then move the second unlocking member 74.

[0054] The support rod 13 is provided with a reset element capable of pushing the push member 75 to reset. The reset element is not shown in the figure. The reset element is a spring.

Claims

1. A child stroller capable of moving from an unfolded position to a folded position after unlocking a locking device, characterized in that: The invention comprises a frame (100) capable of being folded or unfolded, wherein the frame (100) is connected to a seat assembly (4), wherein the seat assembly (4) comprises a seat portion (41) connected to the frame (100), wherein the seat portion (41) is connected to a backrest portion (42) capable of being rotated, unfolded or folded relative to the seat portion (41), wherein an armrest portion (43) capable of being rotated, unfolded or folded relative to the seat portion (41) and the backrest portion (42) are connected between the seat portion (41) and the backrest portion (42). ), a first locking assembly (44) capable of locking the two is provided between the seat portion (41) and the armrest portion (43), a second locking assembly (45) capable of locking the two and being driven by the backrest portion (42) to unlock when the backrest portion (42) is rotated and folded toward the seat portion (41), the first locking assembly (44) comprising a left shell (441) provided on the seat portion (41) and a right shell (442) provided on the backrest portion (42), the left shell (441) and the right shell (442) are provided with a snap-fitting groove (443), the left shell (441) and the right shell (442) enclose a closed space, the closed space is provided with a first snap-fitting member (444) which can move laterally therein and can snap-fit ​​with the snap-fitting groove (443) on the left shell (441) and the right shell (442), a first elastic reset member (445) is further provided between the first snap-fitting member (444) and the left shell (441), and the right shell (442) and the first snap-fitting member (444) are connected to each other. A pushing component (446) is provided between the backrest (42) and can push the first clamping component (444) to disengage from the clamping groove (443) on the right shell body (442) when moving; an operating component (447) is provided on the backrest (42); a pulling cable (448) is provided between the operating component (447) and the pushing component (446) and can drive the first clamping component (444) to move; a second elastic reset component is provided between the operating component (447) and the backrest (42) and can push the operating component (447) to reset.

2. The baby stroller according to claim 1, characterized in that: The second locking assembly (45) comprises a card slot (451) provided on the left shell (441) and the armrest portion (43); a second card slot (452) capable of engaging with the card slot (451) on the left shell (441) and the armrest portion (43) is provided between the first card slot (444) and the left shell (441); a driving portion (453) capable of pushing the second card slot (452) to slide and disengage from the card slot (451) on the armrest portion (43) when the backrest portion (42) is rotated and folded relative to the seat portion (41); and a third elastic reset member (454) capable of pushing the second card slot (452) to reset is provided between the second card slot (452) and the left shell (441).

3. The baby stroller according to claim 1, characterized in that: The frame (100) comprises a front leg (11), the front leg (11) is connected to a rear leg (12) which rotates relative to the front leg (11) around a first axis (A), the rear leg (12) is connected to a support rod (13) which rotates relative to the front leg (11) around a second axis (B), the frame (100) further comprises a seat mounting seat (2) which is connected to the front leg (11) and is rotatable around a third axis (C), the seat assembly (4) is connected to the mounting seat (2), a linkage assembly (3) is provided between the seat mounting seat (2), the front leg (11) and the rear leg (12), and when the front leg (11) rotates toward the rear leg (12), the linkage assembly (3) comprises a sliding seat (31) which is slidably connected to the front leg (11), and the seat assembly (4) is connected to the mounting seat (2). A first connecting rod (32) capable of rotating relative to the sliding seat (31) and the rear leg (12) is provided between the sliding seat (31) and the rear leg (12); one end of the first connecting rod (32) is connected to the sliding seat (31) by rotating around a fourth axis (D); the other end of the first connecting rod (32) is connected to the rear leg (12) by rotating around a fifth axis (E); a second connecting rod (33) capable of rotating relative to the sliding seat (31) and the front end of the seat mounting seat (2) is connected; one end of the second connecting rod (33) is connected to the sliding seat (31) by rotating around a sixth axis (F); the other end of the second connecting rod (33) is connected to the front end of the seat mounting seat (2) by rotating around a seventh axis (G); the front leg (11) is provided with a front wheel (111); the rear leg (12) is provided with a rear wheel (121).

4. The stroller according to claim 3, characterized in that: The seat portion (41) is rotatably connected to the seat mounting seat (2), and a locking assembly (5) capable of locking the seat portion (41) and the seat mounting seat (2) is provided between the seat portion (41) and the seat mounting seat (2).

5. The stroller according to claim 4, characterized in that: The locking assembly (5) comprises a first locking position (51) arranged on the seat portion (41) and corresponding to the forward position of the seat assembly (4) and a second locking position (52) corresponding to the reverse position of the seat assembly (4); a sliding member (53) is connected to the seat mounting seat (2) and can slide relative to the seat mounting seat to engage in or disengage from the first locking position (51) or the second locking position (52); an operating portion (54) protruding from the seat mounting seat (2) is provided on the sliding member (53); and an elastic element capable of pushing the sliding member (53) to reset is provided between the sliding member (53) and the seat mounting seat (2).

6. The baby stroller according to claim 3, characterized in that: The locking device comprises a locking structure (7) arranged between the front leg (11), the rear leg (12) and the support rod (13), the locking structure (7) comprising a first locking component (71) arranged between the front leg (11) and the rear leg (12) and a second locking component (72) arranged between the front leg (11) and the support rod (13), the support rod (13) being connected with a first unlocking member (73) capable of unlocking the first locking component (71) when the support rod (13) is rotated, the support rod (13) is also connected with a second unlocking member (74) capable of moving relative to the support rod, and the support rod (13) is provided with a pushing member (75) capable of causing the second unlocking member (74) to move and unlock the second locking component (72) when pushed.

7. The stroller according to claim 6, characterized in that: The second locking assembly (72) comprises a left connecting shell (721) provided on the front leg (11) and a right connecting shell (722) provided on the support rod (13), wherein the left connecting shell (721) and the right connecting shell (722) are both provided with a first spline groove (723), wherein the left connecting shell (721) and the right connecting shell (722) enclose a sealed space, wherein the sealed space is provided with a first spline (724) which can move laterally therein and can simultaneously engage with the first spline groove (723) on the left connecting shell (721) and the right connecting shell (722), wherein the first spline (724) and the left connecting shell (721) are connected to each other. A first return spring (725) is also provided between the support rod (13) and the first spline (721); the second unlocking member (74) is provided between the support rod (13) and the first spline (724); the support rod (13) is provided with a pushing block (131) capable of pushing the first spline (724) out of the first spline groove (723) on the right connecting shell (722); the second unlocking member (74) is provided with a first accommodating groove (741) capable of accommodating the pushing block (131); the second unlocking member (74) is also provided with a first pushing surface (742) capable of being pushed by the pushing block (131) and located at the first accommodating groove (741).

8. The stroller according to claim 7, characterized in that: The second unlocking member (74) comprises a rotating ring (743) rotatably connected to the support rod (13), the rotating ring (743) is provided with a pushing protrusion (7431) protruding outward and capable of being pushed by the pushing member (75), and the first accommodating groove (741) and the first pushing surface (742) are provided on the rotating ring (743).

9. The stroller according to claim 6, characterized in that: The first locking assembly (71) comprises a left rotating shell (711) provided on the front leg (11) and a right rotating shell (712) provided on the rear leg (12), wherein the left rotating shell (711) and the right rotating shell (712) are both provided with a second spline groove (713), the left rotating shell (711) and the right rotating shell (712) enclose a sealed space, wherein the sealed space is provided with a second spline (714) which can move laterally therein and can be engaged with the first spline groove (723) on the left rotating shell (711) and the right rotating shell (712), and the second spline (714) A second return spring (715) is also provided between the left rotating shell (714) and the right rotating shell (712); a second receiving groove (7141) is provided on the second spline (714); a push-out block (731) is provided on the first unlocking member (73) and can be inserted into the second receiving groove (7141) and can push the second spline (714) out of the second spline groove (713) on the left rotating shell (711) when rotating; a second push surface (7142) which can be pushed by the push-out block (731) is also provided on the second spline (714) and located at the second receiving groove (7141).

10. The stroller according to claim 6, characterized in that: The rear leg (12) comprises a rod body (122), the rod body (122) is connected with a cross bar (123) which is transversely passed through the front leg (11) and the support rod (13), and the first unlocking member (73) is connected to the support rod (13) and sleeved on the cross bar (123).

Images