CN216805567U

CN216805567U - Children's barrow

Info

Publication number: CN216805567U
Application number: CN202220144185.3U
Authority: CN
Inventors: 曹杏华
Original assignee: Zhongshan Zetai Household Products Co ltd
Current assignee: Zhongshan Zetai Household Products Co ltd
Priority date: 2022-01-19
Filing date: 2022-01-19
Publication date: 2022-06-24
Anticipated expiration: 2032-01-19

Abstract

The utility model discloses a stroller which can move from an unfolding position to a folding position after a locking device is unlocked and comprises a foldable bottom support frame, wherein the bottom support frame comprises a front leg and a rear leg which is rotatably connected to the front leg around a first axis A, wheel assemblies are respectively connected to the front leg and the rear leg, a rotating seat is rotatably connected to the rear leg around a second axis B, a support rod is rotatably connected to the bottom support frame around a third axis C, a first connecting rod which is pushed by the support rod to slide relative to the rotating seat when the support rod rotates to approach the bottom support frame is connected to the support rod, the upper end of the first connecting rod is rotatably connected to the support rod around a fourth axis D, and a linkage piece which can enable the front leg to approach the rear leg when the first connecting rod slides relative to the rotating seat is rotatably connected between the lower end of the first connecting rod and the front leg. The utility model aims to overcome the defects of the prior art and provides a child trolley with a novel folding structure.

Description

Children's barrow

[ technical field ] A

The utility model relates to a child stroller.

[ background ] A method for producing a semiconductor device

The child stroller has become a common product in the growth process of children, and the current child stroller is generally foldable through various link structures for the convenience of carrying or storage. The utility model provides another foldable structure to realize the folding of the baby stroller.

The present invention has been made in earnest based on the above-mentioned disadvantages.

[ Utility model ] A method for manufacturing a semiconductor device

The utility model aims to overcome the defects of the prior art and provides a child trolley with a novel folding structure.

The utility model is realized by the following technical scheme:

a stroller, which can be moved from an unfolded position to a folded position after unlocking a locking device, comprises a foldable bottom support 1, the base support 1 comprises a front leg 11 and a rear leg 12 pivotally connected to the front leg 11 about a first axis a, the front leg 11 and the rear leg 12 are both connected with a wheel component 13, the rear leg 12 is rotatably connected with a rotating seat 14 around a second axis B, a stay bar 15 is rotatably connected on the bottom support frame 1 around a third axis C, a first connecting rod 16 which is pushed by the stay bar 15 to slide relative to the rotating seat 14 when the stay bar 15 rotates to approach the bottom support frame 1 is connected on the stay bar 15, the upper end of the first connecting rod 16 is rotatably connected on the stay bar 15 around a fourth axis D, and a linkage 17 which can enable the front leg 11 to be close to the rear leg 12 when the first connecting rod 16 slides relative to the rotating seat 14 is rotatably connected between the lower end of the first connecting rod 16 and the front leg 11.

Bottom sprag frame 1 on still be connected with seat subassembly 2, seat subassembly 2 include seat pole 21, seat pole 21 front side rotate around fifth axis E and connect on preceding leg 11, seat pole 21 rear side and back leg 12 between be equipped with and rotate the second connecting rod 22 of being connected with the two, second connecting rod 22 upper end rotate around sixth axis F and back leg 12 and be connected, second connecting rod 22 lower extreme rotate around seventh axis G and back leg and be connected.

A hand push handle 4 is rotatably connected to the stay bar 15 around a ninth axis I, and a locking device 5 capable of locking the hand push handle 4 and the stay bar 15 is arranged between the hand push handle 4 and the stay bar 15.

The locking device 5 comprises a left connecting shell 51 arranged on the handle 4 and a right connecting shell 52 arranged on the stay bar 15, a movable space 53 is enclosed between the left connecting shell 51 and the right connecting shell 52, spline grooves 54 are arranged on the left connecting shell 51 and the right connecting shell 52, a spline 55 capable of sliding relative to the movable space 53 is arranged in the movable space 53, a first elastic member 56 capable of clamping the spline 55 with the spline grooves 54 of the left connecting shell 51 and the right connecting shell 52 simultaneously when the stroller is in an unfolded state is arranged between the spline 55 and the right connecting shell 52, a first jacking member 57 capable of jacking the spline 55 to slide transversely when rotating is arranged between the spline 55 and the left connecting shell 51, a first jacking protrusion 58 with an inclined plane capable of jacking the first jacking member 57 to slide transversely when the first jacking member 57 rotates is arranged on the left connecting shell 51, the handle 4 is further provided with an operating member 59, and a first cable 50 capable of pulling the first pressing member 57 to rotate when the operating member 59 is operated is connected between the operating member 59 and the first pressing member 57.

The locking device is arranged among the rear legs 12, the rotating seat 14, the support rod 15 and the first connecting rod 16, and the locking device 6 can be unlocked by the hand push handle 4 in a linkage manner when the locking device 5 is unlocked and the hand push handle 4 is folded towards the support rod 15.

The locking device 6 comprises a locking position 6a arranged on a first connecting rod 16, a sliding seat 6b is connected in the rotating seat 14 in a sliding manner, a locking part 6c which can be clamped into or separated from the locking position 6a when the sliding seat 6b slides is arranged on the sliding seat 6b, a second elastic piece 6d which can enable the locking part 6c to keep a clamping and locking state is arranged between the sliding seat 6b and the rotating seat 14, a convex column 6e which penetrates through the rotating seat 14 is further arranged on the sliding seat 6b, and a second pushing piece 6f which can push the convex column 6e to further push the sliding seat 6b to slide is connected on the rear leg 12 in a sliding manner;

a left hinged shell 6g is arranged on the rear leg 12, a right hinged shell 6h is arranged on the support rod 15, a movable cavity 6i is enclosed between the left hinged shell 6g and the right hinged shell 6h, a third pushing piece 6j capable of sliding transversely relative to the movable cavity 6i is arranged in the movable cavity 6i, a sliding rod 6k capable of pushing the second pushing piece 6f to slide when the third pushing piece 6j slides transversely is arranged between the third pushing piece 6j and the second pushing piece 6f, a fourth pushing piece 6l capable of pushing the third pushing piece 6j to move is further arranged between the third pushing piece 6j and the right hinged shell 6h, a second bulge 6m with an inclined plane capable of pushing the fourth pushing piece 6l when the fourth pushing piece 6l rotates is arranged on the right hinged shell 6h, a driving piece 6n capable of rotating relative to the spline 55 and the right connecting shell 52 is further connected between the spline 55 and the right connecting shell 52, a second inhaul cable 6o is arranged between the driving piece 6n and the fourth pushing piece 6l, a pushing part 6p which can push the driving piece 6n to rotate and pull the fourth pushing piece 6l to rotate when the hand push handle 4 rotates and folds towards the support rod 15 is arranged on the left connecting shell 51, and a reset spring 6q is also arranged between the third pushing piece 6j and the left hinge shell 6 g;

the second pushing piece 6f is provided with a first inclined sliding surface 6r, the lower end of the sliding rod 6k is provided with a second inclined sliding surface 6s matched with the first inclined sliding surface 6r, and the upper end of the sliding rod 6k is provided with a third inclined sliding surface 6t matched with the third pushing piece 6 j.

An elastic band 18 which is in a tight state when the stroller is unfolded and pulls the front leg 11 to close the rear leg 12 when the stroller is folded is also arranged between the front leg 11 and the rear leg 12.

The lower end of the first connecting rod 16 is slidably connected in the rotating seat 14 and penetrates through the rotating seat 14.

The support rod 15 is also connected with a handrail assembly 3, the handrail assembly 3 comprises a handrail seat 31 which is rotatably connected on the support rod 15 around an eighth axis H and a handrail rod 32 which is detachably connected on the handrail seat 31.

The upper end of the first connecting rod 16 is connected to the armrest seat 31, and the fourth axis D is coaxial with the eighth axis H.

Compared with the prior art, the utility model has the following advantages: when the child stroller is folded, the locking device is unlocked, the support rod is pushed to rotate and approach towards the rear leg, the first connecting rod moves along with the support rod and slides in the rotating seat in the process that the support rod rotates and approaches towards the rear leg, the rotating seat is pushed by the first connecting rod to rotate relative to the rear leg, the lower end of the first connecting rod slides in the rotating seat and pulls the rear end of the linkage piece to move, the front end of the linkage piece rotates relative to the front leg, the linkage piece and the first connecting rod approach towards each other, and the front leg rotates relative to the rear leg and approaches towards the rear leg in the process that the linkage piece and the first connecting rod approach towards each other.

[ description of the drawings ]

FIG. 1 is a perspective view of the stroller of the present invention;

FIG. 2 is a side view of the stroller of the present invention;

FIG. 3 is one of the folded child stroller apparatus of the present invention;

FIG. 4 is a second view of the stroller of the present invention in a folded state;

FIG. 5 is a third view of the stroller of the present invention in a folded state;

FIG. 6 is a fourth view of the stroller of the present invention in a folded state;

FIG. 7 is a state view of the stroller of the present invention when folding is complete;

FIG. 8 is one of the exploded views of the latch mechanism of the stroller of the present invention;

FIG. 9 is a second exploded view of the locking device of the stroller of the present invention;

FIG. 10 is a third exploded view of the latch mechanism of the stroller of the present invention;

fig. 11 is one of exploded views of a locking device in the stroller of the present invention;

FIG. 12 is a second exploded view of the locking device of the stroller of the present invention;

FIG. 13 is one of the state views of the stroller of the present invention with elastic bands;

fig. 14 is a second state view of the stroller of the present invention having elastic bands.

[ detailed description ] embodiments

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

as shown in fig. 1 to 14, the stroller of the present invention, which can move from an unfolded position to a folded position after unlocking a locking device, comprises a foldable bottom support frame 1, 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 front leg 11 and the rear leg 12 are both connected with a wheel assembly 13, the rear leg 12 is rotatably connected with a rotating base 14 around a second axis B, the bottom support frame 1 is rotatably connected with a supporting rod 15 around a third axis C, the supporting rod 15 is connected with a first connecting rod 16 which is pushed by the supporting rod 15 and slides relative to the rotating base 14 when the supporting rod 15 rotates towards the bottom support frame 1, the upper end of the first connecting rod 16 is rotatably connected to the supporting rod 15 around a fourth axis D, and the lower end of the first connecting rod 16 is rotatably connected to the front leg 11 so that the front leg 11 can lean against the rear leg 12 when the first connecting rod 16 slides relative to the rotating base 14 A closed link 17.

When the child stroller is folded, the locking device is unlocked firstly, then the support rod 15 is pushed to rotate and draw close to the rear leg 12, in the process that the support rod 15 rotates and draws close to the rear leg 12, the first connecting rod 16 moves along with the support rod 15 and slides in the rotating seat 14, the rotating seat 14 is pushed by the first connecting rod 16 to rotate relative to the rear leg 12, at the moment, the lower end of the first connecting rod 16 slides in the rotating seat 14 and pulls the rear end of the linkage piece 17 to move, the front end of the linkage piece 17 rotates relative to the front leg 11, at the moment, the linkage piece 17 and the first connecting rod 16 draw close to each other, and in the process that the linkage piece 17 and the first connecting rod 16 draw close to each other, the front leg 11 rotates relative to the rear leg 12 and rotates and draws close to the rear leg 12.

As shown in fig. 2 to 7, the bottom bracket 1 is further connected with a seat assembly 2, the seat assembly 2 includes a seat rod 21, the front side of the seat rod 21 is rotatably connected to the front leg 11 around a fifth axis E, a second connecting rod 22 rotatably connected to the seat rod 21 and the rear leg 12 is disposed between the rear side of the seat rod 21 and the rear leg 12, the upper end of the second connecting rod 22 is rotatably connected to the rear leg 12 around a sixth axis F, and the lower end of the second connecting rod 22 is rotatably connected to the rear leg around a seventh axis G. The seat bag can be used as a seat bag by installing a cloth cover between the seat post 21 and the stay bar 15. When the front legs 11 rotate towards the rear legs 12 to be closed, the front side of the seat rod 21 rotates around the fifth axis E relative to the front legs 11, at the moment, the upper end of the second connecting rod 22 rotates around the sixth axis F relative to the seat rod 21, the seventh axis G at the lower end of the second connecting rod 22 rotates relative to the rear legs 12, at the moment, the front end of the seat rod 21 moves upwards, the rear end of the seat rod 21 moves downwards, the seat rod 21 is closed towards the bottom support frame 1, and therefore the folding of the stroller is completed.

As shown in fig. 4, the lower end of the first connecting rod 16 is slidably connected in the rotating seat 14 and penetrates through the rotating seat 14. The first connecting rod 16 is capable of sliding in the rotary seat 14 when moving, so as to drive the rotary seat 14 to rotate relative to the rear leg 12.

As shown in fig. 3, the support rod 15 is further connected with a handrail assembly 3, and the handrail assembly 3 comprises a handrail seat 31 rotatably connected to the support rod 15 around an eighth axis H and a handrail 32 detachably connected to the handrail seat 31. The armrest assembly 3 facilitates the child to hold while seated on the stroller, making the ride safer.

As shown in fig. 3, the upper end of the first connecting rod 16 is connected to the armrest seat 31, and the fourth axis D is coaxial with the eighth axis H. When the first connecting rod 16 moves downward and rotates relative to the stay 15 about the first axis a, the armrest seat 31 tilts upward synchronously.

As shown in fig. 3, the seat assembly 2 further includes a back lever 23 rotatably coupled to the seat lever 21. The back-rest rod 23 can rotate relative to the seat rod 21 and can be folded towards the rear legs 12, so that the occupied space is reduced, the back-rest rod 23 is not required to be designed in a multi-section mode, and the back-rest rod 23 can be directly folded towards the rear legs 12 to ensure small volume after being folded.

As shown in fig. 8 to 10, a handle bar 4 is rotatably connected to the stay bar 15 around a ninth axis I, and a locking device 5 capable of locking the handle bar 4 and the stay bar 15 is arranged between the handle bar 4 and the stay bar 15. When the stroller is in the unfolded state, the locking device 5 locks the handle bar 4 and the stay bar 15 in the unfolded position.

As shown in fig. 8 to 10, the locking device 5 includes a left connecting shell 51 disposed on the handle bar 4 and a right connecting shell 52 disposed on the stay bar 15, a movable space 53 is defined between the left connecting shell 51 and the right connecting shell 52, spline grooves 54 are disposed on the left connecting shell 51 and the right connecting shell 52, splines 55 capable of sliding relative to the movable space 53 are disposed in the movable space 53, a first elastic member 56 capable of simultaneously engaging the splines 55 with the spline grooves 54 of the left connecting shell 51 and the right connecting shell 52 when the stroller is in the unfolded state is further disposed between the splines 55 and the right connecting shell 52, a first pressing member 57 capable of pressing the splines 55 to slide transversely when the stroller rotates is further disposed between the splines 55 and the left connecting shell 51, a first pressing protrusion 58 having a cross-sliding function and capable of pressing the first pressing member 57 when the first pressing member 57 rotates is disposed on the left connecting shell 51, the handle 4 is further provided with an operating member 59, and a first cable 50 capable of pulling the first pressing member 57 to rotate when the operating member 59 is operated is connected between the operating member 59 and the first pressing member 57. When the handle bar 4 needs to be rotated and folded towards the stay bar 15, the operation element 59 is operated to pull the first pulling cable 50, the first pulling cable 50 pulls the first jacking part 57 to rotate relative to the left connecting shell 51, the first jacking part 57 is jacked by the first jacking protrusion 58 during rotation and transversely slides relative to the left connecting shell 51 and the right connecting shell 52, the first jacking part 57 pushes the spline 55 to transversely slide and compress the first elastic part 56 during sliding, and the whole locking device 5 is unlocked until the spline 55 is completely jacked into the right connecting shell 52, and at the moment, the handle bar 4 can be rotated and folded relative to the stay bar 15.

As shown in fig. 2, the locking device is disposed between the rear leg 12, the rotating base 14, the stay 15 and the first connecting rod 16, and the locking device 6 can be unlocked by the handle 4 in a linked manner when the locking device 5 is unlocked and the handle 4 is folded toward the stay 15. When the locking device 5 is unlocked, the handle 4 is rotated, the handle 4 unlocks the locking device 6 in a linkage manner in the rotating process, at the moment, the stay bar 15 can rotate towards the rear leg 12 to be close, the front leg 11 can rotate towards the rear leg 12 to be close, and the first connecting rod 16 can move relative to the rotating seat 14 and the stay bar 15.

As shown in fig. 11 to 12, the locking device 6 includes a locking position 6a disposed on the first connecting rod 16, the rotating seat 14 is slidably connected with a sliding seat 6b, the sliding seat 6b is provided with a locking portion 6c capable of being locked or disengaged from the locking position 6a when sliding, a second elastic member 6d capable of keeping the locking portion 6c locked is disposed between the sliding seat 6b and the rotating seat 14, the sliding seat 6b is further provided with a protruding column 6e penetrating the rotating seat 14, and the rear leg 12 is slidably connected with a second pushing member 6f capable of pushing the protruding column 6e to push the sliding seat 6b to slide; a left hinged shell 6g is arranged on the rear leg 12, a right hinged shell 6h is arranged on the support rod 15, a movable cavity 6i is enclosed between the left hinged shell 6g and the right hinged shell 6h, a third pushing piece 6j capable of sliding transversely relative to the movable cavity 6i is arranged in the movable cavity 6i, a sliding rod 6k capable of pushing the second pushing piece 6f to slide when the third pushing piece 6j slides transversely is arranged between the third pushing piece 6j and the second pushing piece 6f, a fourth pushing piece 6l capable of pushing the third pushing piece 6j to move is further arranged between the third pushing piece 6j and the right hinged shell 6h, a second bulge 6m with an inclined plane capable of pushing the fourth pushing piece 6l when the fourth pushing piece 6l rotates is arranged on the right hinged shell 6h, a driving piece 6n capable of rotating relative to the spline 55 and the right connecting shell 52 is further connected between the spline 55 and the right connecting shell 52, a second inhaul cable 6o is arranged between the driving piece 6n and the fourth pushing piece 6l, a pushing part 6p which can push the driving piece 6n to rotate and pull the fourth pushing piece 6l to rotate when the hand push handle 4 rotates and folds towards the support rod 15 is arranged on the left connecting shell 51, and a reset spring 6q is also arranged between the third pushing piece 6j and the left hinge shell 6 g; the second pushing piece 6f is provided with a first inclined sliding surface 6r, the lower end of the sliding rod 6k is provided with a second inclined sliding surface 6s matched with the first inclined sliding surface 6r, and the upper end of the sliding rod 6k is provided with a third inclined sliding surface 6t matched with the third pushing piece 6 j. When the locking device 5 is unlocked and the handle bar 4 rotates towards the support rod 15, the pushing part 6p on the handle bar 4 rotates along with the handle bar 4, the pushing part 6p gradually approaches to the driving piece 6n and pushes the driving piece 6n to rotate relative to the moving space 53, at the same time, the second pull rope 6o on the driving piece 6n pulls the fourth pushing piece 6l to rotate relative to the right hinged shell 6h, in the process that the fourth pushing piece 6l rotates relative to the right hinged shell 6h, the fourth pushing piece 6l is pushed by the second bulge 6m on the right hinged shell 6h and transversely moves relative to the right hinged shell 6h, in the process that the fourth pushing piece 6l transversely moves, the third pushing piece 6j transversely slides relative to the left hinged shell 6g and compresses the return spring 6q, when the third pushing piece 6j transversely slides relative to the left hinged shell 6g, the third pushing piece 6j gradually contacts with the third sliding surface 6t at the upper end of the sliding rod 6k and pushes the sliding rod 6k obliquely towards the sliding rod 12 k And (3) downward sliding, at this time, a second oblique sliding surface 6s at the lower end of the sliding rod 6k is matched with a first oblique sliding surface 6r on the second pushing piece 6f to push the second pushing piece 6f to transversely slide relative to the rear leg 12, when the second pushing piece 6f slides, the second pushing piece 6f pushes the convex column 6e on the sliding seat 6b, when the convex column 6e is pushed, the sliding seat 6b is pushed to transversely slide relative to the rotating seat 14, so that the locking part 6c on the sliding seat 6b can be separated from the first connecting rod 16, the second elastic piece 6d is compressed to be in a compressed state, at this time, the whole locking device 6 is unlocked, the supporting rod 15 can rotate and approach to the rear leg 12, the front leg 11 can rotate and approach to the rear leg 12, and the first connecting rod 16 can vertically slide relative to the rotating seat 14 and rotate relative to the supporting rod 15.

As shown in fig. 1, the front leg 11, the rear leg 12, the stay bar 15 and the push rod 4 are made of carbon fiber materials. The weight is lighter, and the carrying by adults is more convenient.

As shown in fig. 13 to 14, an elastic band 18 is further disposed between the front leg 11 and the rear leg 12, which is under tension when the stroller is unfolded and pulls the front leg 11 to close the rear leg 12 when the stroller is folded. When the stroller needs to be folded, the locking device 5 is unlocked, the handle bar 4 is pushed to approach the supporting bar 15 to be folded, the locking device 6 is unlocked in a linkage manner by the handle bar 4 in the process that the handle bar 4 approaches the supporting bar 15 to be folded, the elastic bands 18 recover from the tightening state to the original state, the elastic bands 18 can pull the front legs 11 to automatically approach the rear legs 12 in the process that the elastic bands 18 recover, the front legs 11 drive the linkage piece 17 to approach the rear legs 12 in the process that the front legs 11 automatically approach the rear legs 12, and the linkage piece 17 pulls the first connecting rod 16 to approach the rear legs 12 when the linkage piece 17 approaches the rear legs 12, so that the supporting bar 15 is pulled by the first connecting rod 16 to fold the rear legs 12 to be folded, and the entire stroller is automatically folded.

Claims

1. A stroller, movable from an unfolded position to a folded position after unlocking a locking device, characterized in that: including bottom sprag frame (1) that can fold, bottom sprag frame (1) include preceding leg (11) and rotate around first axis (A) and connect back leg (12) on preceding leg (11), preceding leg (11) and back leg (12) on all be connected with wheel subassembly (13), back leg (12) on rotate around second axis (B) and be connected with and rotate seat (14), bottom sprag frame (1) on rotate around third axis (C) and be connected with vaulting pole (15), vaulting pole (15) on be connected with and receive the top of vaulting pole (15) and rotate seat (14) gliding head rod (16) relatively when vaulting pole (15) rotate to bottom sprag frame (1) and draw close, head rod (16) upper end rotate around fourth axis (D) and connect on vaulting pole (15), just head rod (16) lower extreme and preceding leg (11) between rotate and be connected with and rotate seat (14) relatively at head rod (16) and rotate seat (14) slip relatively A linkage (17) which enables the front legs (11) to be drawn toward the rear legs (12) when in use.

2. The stroller of claim 1, wherein: bottom sprag frame (1) on still be connected with seat subassembly (2), seat subassembly (2) including seat pole (21), seat pole (21) front side rotate around fifth axis (E) and connect on preceding leg (11), seat pole (21) rear side and back leg (12) between be equipped with the two second connecting rod (22) of rotating and being connected, second connecting rod (22) upper end rotate around sixth axis (F) and back leg (12) and be connected, second connecting rod (22) lower extreme rotate around seventh axis (G) and back leg and be connected.

3. The stroller of claim 1, wherein: the stay bar (15) is rotatably connected with a hand push handle (4) around a ninth axis (I), and a locking device (5) capable of locking the hand push handle (4) and the stay bar (15) is arranged between the hand push handle (4) and the stay bar.

4. The stroller of claim 3, wherein: the locking device (5) comprises a left connecting shell (51) arranged on the hand push handle (4) and a right connecting shell (52) arranged on the stay bar (15), a movable space (53) is enclosed between the left connecting shell (51) and the right connecting shell (52), spline grooves (54) are formed in the left connecting shell (51) and the right connecting shell (52), splines (55) capable of sliding relative to the movable space (53) are arranged in the movable space, a first elastic piece (56) capable of enabling the splines (55) to be simultaneously clamped with the spline grooves (54) of the left connecting shell (51) and the right connecting shell (52) when the child stroller is in an unfolded state is further arranged between the splines (55) and the right connecting shell (52), and a first jacking piece (57) capable of jacking and jacking the splines (55) to transversely slide when the child stroller rotates is further arranged between the splines (55) and the left connecting shell (51), the left connecting shell (51) is provided with a first jacking protrusion (58) which has an inclined surface and can push the first jacking member (57) to transversely slide when the first jacking member (57) rotates, the hand push handle (4) is further provided with an operating member (59), and a first inhaul cable (50) which can pull the first jacking member (57) to rotate when the operating member (59) is operated is connected between the operating member (59) and the first jacking member (57).

5. The stroller of claim 4, wherein: the locking device is arranged among the rear legs (12), the rotating seat (14), the support rod (15) and the first connecting rod (16), and the locking device (6) can be unlocked by the hand push handle (4) in a linkage mode when the locking device (5) is unlocked and the hand push handle (4) is close to and folded towards the support rod (15).

6. The stroller of claim 5, wherein: the locking device (6) comprises a locking position (6a) arranged on a first connecting rod (16), a sliding seat (6b) is connected in the rotating seat (14) in a sliding manner, a locking part (6c) which can be clamped into or separated from the locking position (6a) when the sliding seat (6b) slides is arranged on the sliding seat (6b), a second elastic part (6d) which can enable the locking part (6c) to keep a clamping and locking state is arranged between the sliding seat (6b) and the rotating seat (14), a convex column (6e) penetrating out of the rotating seat (14) is further arranged on the sliding seat (6b), and a second pushing part (6f) which can push the convex column (6e) to further push the sliding seat (6b) to slide is connected on the rear leg (12) in a sliding manner;

a left hinged shell (6g) is arranged on the rear leg (12), a right hinged shell (6h) is arranged on the support rod (15), a movable cavity (6i) is defined between the left hinged shell (6g) and the right hinged shell (6h), a third pushing piece (6j) capable of transversely sliding relative to the movable cavity is arranged in the movable cavity (6i), a sliding rod (6k) capable of pushing the second pushing piece (6f) to slide when the third pushing piece (6j) transversely slides is arranged between the third pushing piece (6j) and the second pushing piece (6f), a fourth pushing piece (6l) capable of pushing the third pushing piece (6j) to move is further arranged between the third pushing piece (6j) and the right hinged shell (6h), a second protruding inclined plane (6m) is arranged on the right hinged shell (6h) and capable of pushing the fourth pushing piece (6l) when the fourth pushing piece (6l) rotates, a driving piece (6n) capable of rotating relative to the spline (55) and the right connecting shell (52) is further connected between the spline (55) and the right connecting shell, a second inhaul cable (6o) is arranged between the driving piece (6n) and the fourth pushing piece (6l), a pushing part (6p) capable of pushing the driving piece (6n) to rotate and further pulling the fourth pushing piece (6l) to rotate when the hand push handle (4) rotates and folds towards the supporting rod (15) is arranged on the left connecting shell (51), and a reset spring (6q) is further arranged between the third pushing piece (6j) and the left hinged shell (6 g);

the second pushing piece (6f) is provided with a first inclined sliding surface (6r), the lower end of the sliding rod (6k) is provided with a second inclined sliding surface (6s) matched with the first inclined sliding surface (6r), and the upper end of the sliding rod (6k) is provided with a third inclined sliding surface (6t) matched with the third pushing piece (6 j).

7. The stroller of claim 1, wherein: an elastic band (18) which is in a tight state when the baby stroller is unfolded and pulls the front leg (11) to be folded towards the rear leg (12) when the baby stroller is folded is also arranged between the front leg (11) and the rear leg (12).

8. The stroller of claim 1, wherein: the lower end of the first connecting rod (16) is connected in the rotating seat (14) in a sliding mode and penetrates out of the rotating seat (14).

9. The stroller of claim 1, wherein: the utility model discloses a handrail assembly, including vaulting pole (15), the vaulting pole (15) on still be connected with handrail subassembly (3), handrail subassembly (3) including rotate around eighth axis (H) and connect handrail seat (31) on vaulting pole (15) and can dismantle handrail pole (32) of connecting on handrail seat (31).

10. The stroller of claim 9, wherein: the upper end of the first connecting rod (16) is connected to the armrest seat (31), and the fourth axis (D) and the eighth axis (H) are coaxial.