CN112874615A - Baby carriage - Google Patents

Abstract

The invention discloses a baby carriage which comprises a carriage frame and a seat assembly connected to the carriage frame, wherein the carriage frame comprises a front support assembly, the front support assembly comprises a front leg and a front wheel arranged at the lower end of the front leg, a connecting seat is arranged at the upper end of a rod of the front leg, a rear support assembly is connected to the front support assembly, the rear support assembly comprises a rear leg rotatably connected with the front support assembly, a rear wheel is arranged at the lower end of the rear leg, a push rod assembly capable of rotating relative to the connecting seat is connected to the connecting seat, a transmission assembly capable of pushing the rear support assembly and the front support assembly to be close when the push rod assembly rotates downwards relative to the front support assembly is arranged between the push rod assembly and the rear leg, the transmission assembly comprises a sliding piece capable of sliding along the push rod assembly, and a transmission rod rotatably connected with the sliding piece and the rear leg is arranged between the sliding piece and the rear. The invention has simple structure, simple and convenient folding operation and small volume after folding.

Description

Baby carriage

[ technical field ] A method for producing a semiconductor device

The invention relates to a baby carriage.

[ background of the invention ]

The baby carrier is a common product in the growth process of children. Current strollers are generally capable of being unfolded and folded, and in the folded position are convenient to store and carry. However, the existing baby carriage generally has complex structure, complex folding operation and larger volume after being folded.

Therefore, the present invention has been made in view of the above disadvantages.

[ summary of the invention ]

The invention aims to overcome the defects of the prior art and provide the baby carriage which has simple structure, simple and convenient folding operation and small volume after being folded.

The invention is realized by the following technical scheme:

a stroller comprising a frame 100 and a seat assembly 200 attached to the frame 100, wherein: the frame 100 comprises a front support assembly 1, the front support assembly 1 comprises a front leg 11 and a front wheel 12 arranged at the lower end of the front leg 11, the upper end of the front leg rod 11 is provided with a connecting seat 13, the front supporting component 1 is connected with a rear supporting component 2, the rear support component 2 comprises a rear leg 21 which is rotationally connected with the front support component 1, a rear wheel 22 is arranged at the lower end of the rear leg 21, the connecting seat 13 is connected with a push rod component 3 which can rotate relative to the connecting seat, a transmission component 4 which can push the rear support component 2 and the front support component 1 to be close when the push rod component 3 rotates downwards relative to the front support component 1 is arranged between the push rod component 3 and the rear leg 21, the transmission assembly 4 comprises a sliding part 41 capable of sliding along the push rod assembly 3, and a transmission rod 42 rotatably connected with the sliding part 41 and the rear leg 21 is arranged between the sliding part and the rear leg.

The stroller as described above, characterized in that: the rear leg 21 is rotatably connected to the connecting seat 13, and the position where the rear leg 21 is connected to the connecting seat 13 is located in front of the position where the push rod assembly 3 is connected to the connecting seat 13.

The stroller as described above, characterized in that: the push rod assembly 3 comprises a lower push rod 31 rotationally connected with the connecting seat 13, a hand push rod 32 capable of sliding in the lower push rod 31 is arranged in the lower push rod 31, the sliding piece 41 is sleeved on the lower push rod 31, a first locking device 5 used for locking the sliding piece 41 and the lower push rod 31 and capable of being unlocked by being driven by the hand push rod 32 when the hand push rod 32 slides downwards is arranged between the sliding piece 41 and the lower push rod 31, and a second locking device 6 capable of being unlocked by being driven by the hand push rod 32 continuously sliding downwards after the first locking device 5 is unlocked is arranged between the lower end of the lower push rod 31 and the connecting seat 13.

The stroller as described above, characterized in that: the first locking device 5 includes a locking hole 51 formed in the lower push rod 31, a locking plate 52 capable of sliding therein and being locked in the locking hole 51 is disposed in the sliding member 41, the locking plate 52 is provided with an inclined surface 53 capable of contacting with the lower end of the hand push rod 32 when the hand push rod 32 slides downward so as to withdraw the locking plate 52 from the locking hole 51, and the sliding member 41 is further provided with a first return spring 54 capable of returning the locking plate 52.

The stroller as described above, characterized in that: the second locking device 6 comprises a clamping groove 61 arranged on the connecting seat 13, a hinged seat 33 rotatably connected with the connecting seat 13 is arranged at the lower end of the lower push rod 31, a clamping pin 62 capable of sliding relative to the hinged seat 33 and clamping or separating from the clamping groove 61 is arranged in the hinged seat 33, a sliding rod 63 capable of being pressed by the lower end of the hand push rod 32 to move downwards is further arranged in the lower push rod 31, the sliding rod 63 is connected with the clamping pin 62 and pushes the clamping pin 62 out of the clamping groove 61 when the sliding rod 63 moves downwards, an arc-shaped groove 64 communicated with the clamping groove 61 and capable of allowing the clamping pin 62 to move inwards after the clamping pin 62 withdraws from the clamping groove 61 is further arranged on the connecting seat 13, and a second return spring 65 capable of returning the sliding rod 63 is further arranged in the hinged seat 33.

The stroller as described above, characterized in that: the lower end of the hand push rod 32 is provided with a fixed seat 321, a moving rod 71 capable of moving up and down in the fixed seat 321 is arranged in the fixed seat 321, the lower end of the moving rod 71 is provided with an inclined wall 72, a locking pin 73 which is matched with the inclined wall 72 and can be pushed by the inclined wall 72 to move transversely when the moving rod 71 moves downwards is further arranged in the fixed seat 321, a locking hole 74 capable of being matched with the locking pin 73 is arranged on the lower push rod 31, a third return spring 75 capable of pushing the locking pin 73 to return is further arranged in the fixed seat 321, and a driving rod 76 capable of pushing the moving rod 71 to move downwards after being pressed is arranged in the hand push rod 32.

The stroller as described above, characterized in that: the transfer line 42 include with back leg 21 rotate the lower drive rod 421 of being connected and rotate the upper transfer rod 422 of being connected with slider 41, upper transfer rod 422 cup joint with lower drive rod 421 and be connected and can relative slip, upper transfer rod 422 middle part fixedly connected with top lean on seat 423, top lean on seat 423 and lower drive rod 421 between be equipped with the damping spring 424 that the cover was established on upper transfer rod 422.

The stroller as described above, characterized in that: the bassinet still include backup pad 81, backup pad 81 and preceding supporting component 1 between be equipped with the both articulated driving strap 82, driving strap 82 one end and preceding supporting component 1 around first axis A articulated, the other end and backup pad 81 rear side around second axis B articulated, preceding leg 11 on be equipped with and follow its gliding sliding sleeve 83, sliding sleeve 83 and backup pad 81 rotate around third axis C and be connected and make when the bassinet is folded backup pad 81 remove to the front side and draw close on preceding leg 11, backup pad 81 and preceding supporting component 1 between be equipped with and be used for locking the locking mechanical system 84 of the two.

The stroller as described above, characterized in that: the locking mechanism 84 includes a protruding seat 14 disposed on the front support assembly 1, the protruding seat 14 is provided with a locking pin 841 capable of moving transversely relative to the protruding seat, the driving plate 82 is provided with a locking groove 842 capable of being engaged with the locking pin 841, the supporting plate 81 is provided with a button 843 capable of ejecting the locking pin 841 out of the locking groove 842 when being pressed, and the protruding seat 14 is further provided with a fourth return spring capable of pushing the locking pin 841 to return.

The stroller as described above, characterized in that: the protruding seat 14 is of a hollow structure, the protruding seat 14 is rotatably connected with a rotating seat 15 capable of sealing the hollow space, a torsion spring 16 is arranged between the rotating seat 15 and the protruding seat 14, an arc-shaped hole 17 is further formed in the protruding seat 14, and a sliding pin 18 capable of sliding in the arc-shaped hole 17 when the rotating seat 15 rotates is arranged on the rotating seat 15.

The stroller as described above, characterized in that: the supporting plate 81 is provided with a slot 88 for inserting the protruding seat 14.

The stroller as described above, characterized in that: the seat assembly 200 comprises the support plate 81, a backrest 85 capable of rotating and folding relative to the support plate 81 is arranged at the rear side of the support plate 81, a front rod 86 is also rotatably connected to the support plate 81 and positioned in front of the backrest 85, and a side rod 87 rotatably connected with the upper end of the front rod 86 and the backrest 85 is arranged between the upper end of the front rod 86 and the backrest 85.

The stroller as described above, characterized in that: the seat assembly 200 is removably attached to the support plate 81.

Compared with the prior art, the invention has the following advantages:

1. the frame comprises a front support assembly and a rear support assembly connected to the front support assembly, a push rod assembly is connected to the front support assembly, a sliding piece capable of sliding relative to the push rod assembly is further arranged on the push rod assembly, and a transmission rod rotatably connected with the sliding piece and the rear leg is arranged between the sliding piece and the rear leg. Therefore, when the baby carriage is folded, the push rod assembly rotates downwards relative to the front support assembly, the lower end of the transmission rod pushes the rear leg to enable the rear leg and the front leg to be close to each other in the process of downward rotation of the push rod assembly, the sliding piece slides along the push rod assembly in the process, and finally the front leg, the rear leg and the push rod assembly are close to each other, and the size is small after folding. And when folding, only need rotate push rod assembly downwards and can realize that the frame is folding, operate very convenient and fast.

2. The baby carriage comprises a support plate, a transmission piece hinged with the support plate and a front support assembly is arranged between the support plate and the front support assembly, one end of the transmission piece is hinged with the front support assembly around a first axis, the other end of the transmission piece is hinged with the rear side of the support plate around a second axis, a sliding sleeve capable of sliding along the front leg is arranged on the front leg, and the sliding sleeve is rotatably connected with the support plate around a third axis so that the support plate moves forwards and approaches the front leg when the baby carriage is folded. The child may be seated on the support plate while the support plate is used as a seat plate of the seat assembly, but the seat assembly may be provided as a separate member detachably attachable to the support plate. When the foldable bicycle is required to be folded, the locking mechanisms of the support plate and the front support assembly are unlocked, then the support plate is pushed forwards, the transmission piece, the support plate and the front support assembly rotate relatively, the sliding sleeve slides downwards along the front leg and drives the support plate to move downwards and forwards, and therefore the support plate is drawn close to the front leg. In the folding process, the locking mechanism is unlocked and then the supporting plate is pushed forwards, so that the folding device is simple and convenient to operate and ingenious in structural design.

3. The invention has simple structure, simple and convenient folding operation and small volume after being folded, and is suitable for popularization and application.

[ description of the drawings ]

FIG. 1 is a side view of a vehicle frame of the present invention;

FIG. 2 is a perspective view of the vehicle frame of the present invention;

FIG. 3 is a perspective view of a component of the vehicle frame of the present invention;

FIG. 4 is a cross-sectional view of the vehicle frame of the present invention;

FIG. 5 is an enlarged view at D of FIG. 4;

FIG. 6 is an enlarged view at E in FIG. 4;

FIG. 7 is a side view of the present invention;

FIG. 8 is a perspective view of the present invention;

FIG. 9 is a partial cross-sectional view of the present invention;

FIG. 10 is an exploded view of the components of the present invention;

fig. 11 is a side view of the invention in a folded state.

[ detailed description ] embodiments

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

as shown in fig. 1, 2, 7, 8 and 11, a stroller comprises a frame 100 and a seat assembly 200 connected to the frame 100, wherein the frame 100 comprises a front support assembly 1, the front support assembly 1 comprises a front leg 11 and a front wheel 12 arranged at the lower end of the front leg 11, a connecting seat 13 is arranged at the upper end of the front leg rod 11, a rear support assembly 2 is connected to the front support assembly 1, the rear support assembly 2 comprises a rear leg 21 rotatably connected to the front support assembly 1, a rear wheel 22 is arranged at the lower end of the rear leg 21, a push rod assembly 3 capable of rotating relative to the connecting seat 13 is connected to the connecting seat 13, a transmission assembly 4 capable of pushing the rear support assembly 2 to be close to the front support assembly 1 when the push rod assembly 3 rotates downward relative to the front support assembly 1 is arranged between the push rod assembly 3 and the rear leg 21, the transmission assembly 4 comprises a sliding part 41 capable of sliding along the push rod assembly 3, a transmission rod 42 which is rotatably connected with the sliding piece 41 and the rear leg 21 is arranged between the sliding piece and the rear leg. When the baby carriage is folded, the push rod component 3 is rotated downwards relative to the front support component 1, the lower end of the transmission rod 42 pushes the rear leg 21 to enable the rear leg 21 and the front leg 11 to be close to each other in the process of downward rotation of the push rod component 3, the sliding part 41 slides along the push rod component 3 in the process, and finally the front leg 11, the rear leg 12 and the push rod component 3 are close to each other, and the size is small after folding. And when folding, only need to rotate push rod assembly 3 downwards can realize the frame is folding, operate very convenient and fast.

As shown in fig. 1 and 2, rear leg 21 is rotatably connected to connecting seat 13, and the position where rear leg 21 is connected to connecting seat 13 is located at the front side of the position where push rod assembly 3 is connected to connecting seat 13. By the design, the baby carriage is simple and compact in structure, flexible to fold during folding operation and small in size after being folded.

As shown in fig. 1 to 6, the push rod assembly 3 includes a push rod 31 rotatably connected to the connecting seat 13, a push rod 32 is disposed in the push rod 31 and can slide therein, the slider 41 is sleeved on the push rod 31, a first latch device 5 is disposed between the slider 41 and the push rod 31 and used for locking the slider and the push rod 31 and can be driven by the push rod 32 to unlock when the push rod 32 slides downward, and a second latch device 6 is disposed between the lower end of the push rod 31 and the connecting seat 13 and can be driven by the push rod 32 which continues to slide downward to unlock the first latch device 5. The handle bar 32 slides in the lower push rod 31, and the handle bar 32 is drawn out when the stroller is pushed, and the handle bar 32 is pushed into the lower push rod 31 when the stroller is folded. When the baby carriage is folded, the hand push rod 32 is pushed downwards, the lower end of the hand push rod 32 drives the first latch device 5 to unlock, at this time, although the first latch device unlocks 5, the baby carriage still cannot be folded because the second latch device 6 is arranged between the lower push rod 31 and the connecting seat 13, at this time, the hand push rod 32 needs to continuously slide downwards, and after the lower end of the hand push rod 32 touches the second latch device 6 and unlocks the second latch device 6, the baby carriage can be folded. Therefore, when the frame is unlocked, the hand push rod 32 needs to slide downwards all the time and unlock the first locking device 5 and the second locking device 6 in sequence, so that the first locking device 5 is prevented from being folded after being unlocked, and the effect of ensuring safety is further achieved.

As shown in fig. 4 and 5, the first locking device 5 includes a locking hole 51 formed in the lower push rod 31, a locking plate 52 capable of sliding therein and being locked in the locking hole 51 is disposed in the sliding member 41, an inclined surface 53 capable of contacting with the lower end of the push rod 32 when the push rod 32 slides downward and allowing the locking plate 52 to exit from the locking hole 51 is disposed on the locking plate 52, and a first return spring 54 capable of returning the locking plate 52 is further disposed in the sliding member 41. When the first latch device 5 is unlocked, the lower end of the push rod 32 pushes the inclined surface 53 on the latch plate 52, so that the latch plate 53 moves laterally in the sliding member 41 to disengage from the latch hole 51 on the lower push rod 31, and therefore, the first latch device 5 can be unlocked only by pushing the push rod 32 downwards, and the operation is simple and rapid.

As shown in fig. 3 to 5, the second locking device 6 includes a locking groove 61 disposed on the connecting seat 13, a hinge seat 33 rotatably connected to the connecting seat 13 is disposed at a lower end of the lower push rod 31, a locking pin 62 capable of sliding relative to the hinge seat 33 and engaging with or disengaging from the locking groove 61 is disposed in the hinge seat 33, a sliding rod 63 capable of being pushed by a lower end of the push rod 32 to move downward is further disposed in the lower push rod 31, the sliding rod 63 is connected to the locking pin 62 and pushes the locking pin 62 out of the locking groove 61 when the sliding rod 63 moves downward, an arc-shaped groove 64 communicated with the locking groove 61 and capable of allowing the locking pin 62 to move inward after the locking pin 62 is withdrawn from the locking groove 61 is further disposed on the connecting seat 13, and a second return spring 65 capable of returning the sliding rod 63 is further disposed in the hinge seat 33. After the first locking device 5 is unlocked, the hand push rod 32 continues to slide downwards, in the sliding process, the hand push rod 32 touches the sliding rod 63 and pushes the sliding rod 63 to slide downwards, the sliding rod 63 pushes the locking pin 62 connected with the sliding rod 63 to move downwards in the downward sliding process, the locking pin 62 retreats from the locking groove 61 on the connecting seat 13 and enters the arc-shaped groove 64 on the connecting seat 13 in the downward moving process, once the locking pin 62 enters the arc-shaped groove 64, the lower push rod 31 can rotate relative to the connecting seat 13, and at the moment, the frame 100 can be folded. Therefore, when the frame 100 needs to be folded, the manual push rod 32 is pushed downwards to realize double unlocking, and the operation is very convenient and fast.

As shown in fig. 4 and 6, the hand push rod 32 has a fixed seat 321 at a lower end thereof, a movable rod 71 is disposed in the fixed seat 321 and can move up and down therein, an inclined wall 72 is disposed at a lower end of the movable rod 71, a locking pin 73 is disposed in the fixed seat 321 and can be engaged with the inclined wall 72 and pushed by the inclined wall 72 to move transversely when the movable rod 71 moves downwards, a locking hole 74 capable of engaging with the locking pin 73 is disposed in the lower push rod 31, a third return spring 75 capable of pushing the locking pin 73 to return is disposed in the fixed seat 321, and a driving rod 76 capable of pushing the movable rod 71 to move downwards after being pressed is disposed in the hand push rod 32. The locking hole 74 and the locking pin 73 are matched to position the hand push rod 32 and the lower push rod 31 with each other, when the hand push rod 32 needs to slide, only the driving rod 76 needs to be pushed downwards, the driving rod 76 pushes the movable rod 71 to move downwards, the inclined wall 72 on the movable rod 71 pushes the locking pin 73 to move transversely to be separated from the locking hole 74, and the operation is simple and convenient.

As shown in fig. 1 and 5, the transmission rod 42 includes a lower transmission rod 421 rotatably connected to the rear leg 21 and an upper transmission rod 422 rotatably connected to the sliding member 41, the upper transmission rod 422 is connected to the lower transmission rod 421 in a sleeved manner and can slide relatively, the middle of the upper transmission rod 422 is fixedly connected to a propping seat 423, and a damping spring 424 sleeved on the upper transmission rod 422 is arranged between the propping seat 423 and the lower transmission rod 421. When the baby carriage runs on an uneven road surface, the lower transmission rod 421 and the upper transmission rod 422 can slide relatively, and the damping spring 424 plays a damping role, so that the child in the baby carriage can ride comfortably.

As shown in fig. 7 to 10, the stroller further comprises a supporting plate 81, a driving plate 82 hinged to the supporting plate 81 and the front supporting assembly 1 is arranged between the supporting plate 81 and the front supporting assembly 1, one end of the driving plate 82 is hinged to the front supporting assembly 1 around a first axis a, the other end of the driving plate 82 is hinged to the rear side of the supporting plate 81 around a second axis B, a sliding sleeve 83 capable of sliding along the front leg 11 is arranged on the front leg 11, the sliding sleeve 83 is rotatably connected to the supporting plate 81 around a third axis C, so that the supporting plate 81 moves forward to be close to the front leg 11 when the stroller is folded, and a locking mechanism 84 for locking the supporting plate 81 and the front supporting assembly 1 is arranged between the supporting plate 81 and the front supporting assembly 1. In this embodiment, a child can directly sit on the support plate 81, and the support plate 81 is used as the seat assembly 200, but the seat assembly 200 may be a separate member detachably attached to the support plate 81, and the child can sit in the separate member and be attached to or detached from the support plate 81. In the present embodiment, when folding is required, the support plate 81 is unlocked from the locking mechanism 84 of the front support assembly 1 and then the support plate 81 is pushed forward, the driving strap 82 rotates relative to the support plate 81 and the front support assembly 1, and the sliding sleeve 83 slides down along the front leg 11 and carries the support plate 81 to move forward and downward, so that the support plate 81 is drawn close to the front leg 11. In the folding process, only the locking mechanism 84 needs to be unlocked and then the supporting plate 81 needs to be pushed forwards, so that the folding device is simple and convenient to operate and has a very ingenious structural design.

As shown in fig. 1 to 10, the locking mechanism 84 includes a protruding seat 14 disposed on the front support assembly 1, a locking pin 841 transversely movable with respect to the protruding seat 14, a locking groove 842 engageable with the locking pin 841 disposed on the driving plate 82, a push button 843 capable of pushing the locking pin 841 out of the locking groove 842 when being pressed is disposed on the supporting plate 81, and a fourth return spring (not shown) capable of pushing the locking pin 841 to return is disposed in the protruding seat 14. When the folding is required, the button 843 is pressed, the button 843 ejects the locking pin 841 out of the locking groove 842 on the driving plate 82, and at this time, the driving plate 82 can rotate relative to the front support assembly 1 and the support plate 81, so that the support plate 81 can be drawn toward the front leg 11.

As shown in fig. 9 and 10, the protruding seat 14 is a hollow structure, a rotating seat 15 capable of closing the hollow space is rotatably connected to the protruding seat 14, a torsion spring 16 is arranged between the rotating seat 15 and the protruding seat 14, an arc-shaped hole 17 is further formed in the protruding seat 14, and a sliding pin 18 capable of sliding in the arc-shaped hole 17 when the rotating seat 15 rotates is arranged on the rotating seat 15. When the baby carriage is unfolded, the rotating seat 15 is pressed in the convex seat 14, the torsion spring 16 is in a deformed state, when the supporting plate 81 is closed towards the front legs 11, the lower side of the supporting plate 81 does not press against the rotating seat 15 any more, the torsion spring 16 pushes the rotating seat 15 to rotate upwards to reset, and a certain space is occupied due to the upward rotation of the rotating seat 15, so that the hand clamping prevention effect is achieved.

As shown in fig. 9 and 10, the supporting plate 81 is provided with a slot 88 into which the protruding seat 14 can be inserted. Through the cooperation of the protruding seat 14 and the slot 88, the supporting plate 81 can move smoothly when the front legs 11 are drawn together, and the supporting plate 81 can be positioned firmly in the unfolded state of the baby carriage, so that the baby carriage is prevented from shaking and the safety is ensured.

As shown in FIG. 7, when the supporting plate 81 is used as a seat plate of the seat assembly 200, a backrest 85 capable of being folded and rotated with respect to the supporting plate 81 may be further provided at a rear side of the supporting plate 81, a front rod 86 may be further rotatably connected to the supporting plate 81 at a front side of the backrest 85, and a side rod 87 may be rotatably connected between an upper end of the front rod 86 and the backrest 85. The arrangement of the backrest 85, the front bar 86 and the side bars 87 is such that the seat assembly 200 assumes a frame configuration in which a child is seated for safety. When folding is required, the backrest 85 is pushed forward, and the front bar 86 and the side bars 87 are rotated relative to each other and brought together with the backrest 85 to the support plate 81.

Claims (13)

1. A stroller comprising a frame (100) and a seat assembly (200) attached to the frame (100), characterized in that: the frame (100) comprises a front supporting component (1), the front supporting component (1) comprises a front leg (11) and a front wheel (12) arranged at the lower end of the front leg (11), a connecting seat (13) is arranged at the upper end of a front leg rod (11), a rear supporting component (2) is connected onto the front supporting component (1), the rear supporting component (2) comprises a rear leg (21) rotatably connected with the front supporting component (1), a rear wheel (22) is arranged at the lower end of the rear leg (21), a push rod component (3) capable of rotating relative to the connecting seat (13) is connected onto the connecting seat (13), a transmission component (4) capable of pushing the rear supporting component (2) to be close to the front supporting component (1) when the push rod component (3) rotates downward relative to the front supporting component (1) is arranged between the push rod component (3) and the rear leg (21), the transmission component (4) comprises a sliding part (41) capable of sliding along the push rod component (3), a transmission rod (42) which is rotationally connected with the sliding piece (41) and the rear leg (21) is arranged between the sliding piece and the rear leg.

2. A stroller according to claim 1, wherein: the rear leg (21) is rotatably connected to the connecting seat (13), and the position where the rear leg (21) is connected with the connecting seat (13) is located on the front side of the position where the push rod assembly (3) is connected with the connecting seat (13).

3. A stroller according to claim 1, wherein: the push rod assembly (3) comprises a lower push rod (31) rotatably connected with the connecting seat (13), a hand push rod (32) capable of sliding in the lower push rod (31) is arranged in the lower push rod (31), a sliding piece (41) is sleeved on the lower push rod (31), a first locking device (5) used for locking the lower push rod (31) and capable of being driven by the hand push rod (32) to be unlocked when the hand push rod (32) slides downwards is arranged between the sliding piece (41) and the lower push rod (31), and a second locking device (6) capable of being driven by the hand push rod (32) which continuously slides downwards after the first locking device (5) is unlocked and capable of being unlocked is arranged between the lower end of the lower push rod (31) and the connecting seat (13).

4. A stroller according to claim 3, wherein: first kayser device (5) including establishing card lockhole (51) on push rod (31) down, slider (41) in be equipped with can slide in it and go into card locking plate (52) in the card lockhole (51), card locking plate (52) on be equipped with can touch inclined plane (53) that connect and make card locking plate (52) withdraw from kayser hole (51) with handspike (32) lower extreme when handspike (32) slide downwards, slider (41) in still be equipped with first reset spring (54) that enable card locking plate (52) to reset.

5. A stroller according to claim 3, wherein: the second locking device (6) comprises a clamping groove (61) arranged on the connecting seat (13), the lower end of the lower push rod (31) is provided with a hinged seat (33) which is rotationally connected with the connecting seat (13), a bayonet pin (62) which can slide relative to the hinged seat (33) and is clamped with or separated from the bayonet slot (61) is arranged in the hinged seat, a sliding rod (63) which can be pressed by the lower end of the hand push rod (32) to move downwards is also arranged in the lower push rod (31), the sliding rod (63) is connected with the clamping pin (62), and the sliding rod (63) pushes the clamping pin (62) out of the clamping groove (61) when the sliding rod (63) moves downwards, the connecting seat (13) is also provided with an arc-shaped groove (64) which is communicated with the clamping groove (61) and can allow the clamping pin (62) to move in after the clamping pin (62) is withdrawn from the clamping groove (61), and a second return spring (65) capable of returning the sliding rod (63) is further arranged in the hinged seat (33).

6. A stroller according to claim 3, wherein: push rod (32) lower extreme fixing base (321) have, fixing base (321) in be equipped with carriage release lever (71) that can reciprocate in it, carriage release lever (71) lower extreme be equipped with skew wall (72), fixing base (321) in still be equipped with and can be promoted and lateral shifting's stop pin (73) by skew wall (72) when carriage release lever (71) downstream with skew wall (72) cooperation, push down pole (31) on be equipped with can with stop pin (73) complex locking hole (74), fixing base (321) in still be equipped with third reset spring (75) that can promote stop pin (73) and reset, push rod (32) in be equipped with and can promote actuating lever (76) downstream after pressing.

7. A stroller according to claim 1, wherein: transfer line (42) including rotate lower transfer line (421) of being connected with back leg (21) and rotate last transfer line (422) of being connected with slider (41), last transfer line (422) cup joint with lower transfer line (421) and be connected and can the relative slip, last transfer line (422) middle part fixedly connected with top lean on seat (423), top lean on seat (423) and lower transfer line (421) between be equipped with damping spring (424) that the cover was established on last transfer line (422).

8. A stroller according to any of claims 1 to 7, wherein: the bassinet still include backup pad (81), backup pad (81) and preceding supporting component (1) between be equipped with the two articulated transmission piece (82), transmission piece (82) one end and preceding supporting component (1) around first axis (A) articulated, the other end and backup pad (81) rear side around second axis (B) articulated, preceding leg (11) on be equipped with and follow its gliding sliding sleeve (83), sliding sleeve (83) and backup pad (81) rotate around third axis (C) and be connected and make when the bassinet is folding backup pad (81) move to the front side and draw close on preceding leg (11), backup pad (81) and preceding supporting component (1) between be equipped with locking mechanical system (84) that are used for locking the two.

9. A stroller according to claim 8, wherein: locking mechanical system (84) including establishing protrusion seat (14) on preceding supporting component (1), protrusion seat (14) on be equipped with can be relative its lateral shifting's kayser round pin (841), driving plate (82) on be equipped with can with kayser round pin (841) block kayser groove (842), backup pad (81) on be equipped with can be with kayser round pin (841) from kayser groove (842) ejecting button (843) in pressing down, protrusion seat (14) in still be equipped with the fourth reset spring that can push kayser round pin (841) and reset.

10. A stroller according to claim 9, wherein: the novel motor is characterized in that the protruding seat (14) is of a hollow structure, the protruding seat (14) is connected with a rotating seat (15) capable of sealing the hollow space in a rotating mode, a torsion spring (16) is arranged between the rotating seat (15) and the protruding seat (14), an arc-shaped hole (17) is further formed in the protruding seat (14), and a sliding pin (18) capable of sliding in the arc-shaped hole (17) when the rotating seat (15) rotates is arranged on the rotating seat.

11. A stroller according to claim 9, wherein: the supporting plate (81) is provided with a slot (88) into which the convex seat (14) can be inserted.

12. A stroller according to claim 8, wherein: the seat assembly (200) comprises the supporting plate (81), a backrest (85) capable of rotating and folding relative to the supporting plate (81) is arranged on the rear side of the supporting plate (81), a front rod (86) is further rotatably connected to the supporting plate (81) in front of the backrest (85), and a side rod (87) rotatably connected with the upper end of the front rod (86) and the backrest (85) is arranged between the upper end of the front rod (86) and the backrest.

13. A stroller according to claim 8, wherein: the seat assembly (200) is detachably connected to the support plate (81).

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