CN216269473U

CN216269473U - Children's barrow

Info

Publication number: CN216269473U
Application number: CN202123125731.3U
Authority: CN
Inventors: 不公告发明人
Original assignee: Zhongshan Tege Daily Necessities Co ltd
Current assignee: Zhongshan Tege Daily Necessities Co ltd
Priority date: 2021-12-13
Filing date: 2021-12-13
Publication date: 2022-04-12
Anticipated expiration: 2031-12-13

Abstract

The utility model discloses a stroller capable of moving from an unfolded position to a folded position when a locking device is released, comprising: the front legs are connected with front wheels; the rear legs are rotatably connected to the front legs around a first axis A, and the rear legs are connected with rear wheels; the support rod is rotatably connected to the rear leg around a second axis B; the connecting frame is rotatably connected to the lower end of the stay bar around a third axis C, and a driving assembly capable of driving the connecting frame to be close to the front leg when the stay bar rotates to be close to the rear leg is arranged between the connecting frame and the front leg; and a linkage assembly which can drive the front legs to approach to the rear legs when the support rods rotate to approach to the rear legs is further arranged among the front legs, the rear legs and the support rods. The utility model aims to overcome the defects of the prior art and provide the stroller which is simple to fold.

Description

Children's barrow

[ technical field ] A method for producing a semiconductor device

The utility model relates to a baby stroller.

[ background of the utility model ]

The frame of the existing stroller is generally provided with connecting frames for placing a child seat, but the connecting frames are either fixedly connected or locked on the frame through locking parts, and when the connecting frames are fixedly connected with the frame, the folded frame and seat assembly of the entire stroller is large and occupies a large space; after the connecting frame and the frame are unlocked and locked, the connecting frame needs to be independently operated to be folded towards the frame, the folding is not very convenient, and the locking part is arranged between the connecting frame and the frame, so that the structure of the whole frame is more complex.

The present invention has been developed in view of the above-mentioned shortcomings.

[ Utility model ] content

The utility model aims to overcome the defects of the prior art and provide the stroller which is simple to fold.

The utility model is realized by the following technical scheme:

a stroller movable from an unfolded position to a folded position upon release of a locking device, comprising:

the front leg 11, the said front leg 11 connects with the front wheel 111;

the rear leg 12 is rotatably connected to the front leg 11 around a first axis A, and a rear wheel 121 is connected to the rear leg 12;

a stay 13 rotatably connected to the rear leg 12 about a second axis B;

the connecting frame 14 is rotatably connected to the lower end of the stay bar 13 around a third axis C, and a driving assembly 15 capable of driving the connecting frame 14 to approach the front leg 11 when the stay bar 13 rotates to approach the rear leg 12 is arranged between the connecting frame 14 and the front leg 11;

and a linkage assembly 16 which can drive the front legs 11 to approach the rear legs 12 when the support rods 13 rotate to approach the rear legs 12 is also arranged among the front legs 11, the rear legs 12 and the support rods 13.

Vaulting pole 13 include the body of rod 131, the body of rod 131 on be equipped with outside convex bulge 132, bulge 132 rotates around second axis B and connects on back leg 12, link 14 rotate around third axis C and connect on bulge 132, just third axis C and second axis B deviate.

The link span 14 include the pedestal 141 and connect on the pedestal 141 and the extension piece 142 that the downward sloping extends, the extension piece 142 lower extreme rotate around third axis C and connect on the bulge 132, the front leg 11 include front leg pole 112 and connect on front leg pole 112 and the tilt up extends and with the connection piece 113 that extends piece 142 cross arrangement, drive assembly 15 including can transversely wear to establish connection piece 113 and extension piece 142 and fix the bolt 151 on connection piece 113 simultaneously, the extension piece 142 on be equipped with can for bolt 151 let the position and guide link span 14 to the guide groove 152 that front leg 11 drawn close when vaulting pole 13 rotates to the back leg 12 and draws close.

Linkage assembly 16 include that the rear end rotates around fourth axis D and connects the first gangbar 161 on back leg 12, preceding leg 11 on rotate around fifth axis E and be connected with second gangbar 162, second gangbar 162 rear end and first gangbar 161 front end rotate around sixth axis F and be connected, protrusion 132 on rotate around seventh axis G and be connected with third gangbar 163, third gangbar 163 lower extreme and first gangbar 161 front end rotate around eighth axis H and be connected.

The stroller further comprises a seat assembly 2 connected to the connecting frame 14, the seat assembly 2 comprises a seat portion 21 connected to the connecting frame 14, the seat portion 21 is connected to a backrest portion 22 capable of rotating relative to the seat portion to adjust the included angle between the seat portion and the backrest portion, and a locking device 23 capable of locking the seat portion 21 and the backrest portion 22 is further arranged between the seat portion and the backrest portion.

The locking device 23 comprises a plurality of engaging positions 231 circumferentially arranged on the seat portion 21, the backrest portion 22 is further connected with an engaging member 232 capable of sliding relative to the seat portion to be engaged with or disengaged from the engaging positions 231, the backrest portion 22 is provided with an operating member 233 capable of sliding relative to the seat portion, a cable 234 is arranged between the operating member 233 and the engaging member 232, a second elastic member 235 capable of enabling the engaging member 232 to keep a locked state is arranged between the backrest portion 22 and the engaging member 232, and an elastic resetting member 236 capable of resetting the operating member 233 is arranged between the operating member 233 and the backrest portion 22.

The seat part 21 is also connected with an armrest 24, and a locking assembly 25 capable of locking the armrest 24, the seat part 21 and the backrest part 22 is also arranged among the armrest 24, the backrest part 22.

The locking assembly 25 includes a block 251 disposed on the armrest 24, the seat 21 is provided with a slide block 252 capable of sliding relative to the block 251 to abut against or separate from the block 251, the slide block 252 is connected with a pin shaft 253 which can extend into the backrest part 22 and drive the slide block 252 to slide to separate from the block 251 when being pressed, the backrest part 22 is provided with a driving groove 254 which can push the pin shaft 253 to slide relative to the seat part 21 when the backrest part 22 rotates relative to the seat part 21, the driving groove 254 is provided with a driving surface 255 capable of pressing the pin shaft 253 when the backrest part 22 is folded toward the seat part 21, an elastic pressing element 256 for keeping the sliding block 252 and the block 251 in a pressed state is further disposed between the sliding block 252 and the seat portion 21, the seat portion 21 is further provided with a guiding sliding hole 257 through which the pin 253 passes and which can guide the pin 253 to vertically slide relative to the seat portion 21.

The fixture block 251 is provided with a first abutting surface 2511, the slider 252 is provided with a second abutting surface 2521 abutting against the first abutting surface 2511, the top of the slider 252 is provided with an inclined sliding surface 2522, and the fixture block 251 is further provided with a pressing surface 2512 capable of pressing the inclined sliding surface 2522 to enable the slider 252 to slide when the armrest is unfolded relative to the seat portion 21.

The locking device 17 comprises a locking piece 171 connected to the front leg 11, the stay bar 13 is connected with a hook 172 capable of being locked or separated with the locking piece 171 when moving relative to the stay bar 13 around a ninth axis I in a rotating manner, a first elastic piece 173 capable of enabling the hook 172 to keep a locking state is further arranged between the hook 172 and the stay bar 13, and the stay bar 13 is internally connected with a hand push rod 18 capable of pushing the hook 172 to rotate when sliding relative to the stay bar 13 so that the hook 172 is separated from the locking piece 171.

Compared with the prior art, the utility model has the following advantages: when the stroller is folded, the locking device is unlocked, the supporting rod is pushed, the supporting rod rotates around the second axis B to be close to the rear leg, when the supporting rod rotates, the lower end of the supporting rod moves upwards to drive the driving assembly to move, the driving assembly drives the connecting frame to be close to the front leg when moving, the supporting rod also drives the linkage assembly to move in the process, when the linkage assembly moves, the linkage assembly drives the front leg to be close to the rear leg until the supporting rod is close to the rear leg, the front leg is close to the rear leg and the connecting frame is close to the front leg, and the entire stroller is folded. The user only needs to operate the stay bar after unlocking to complete the folding of the whole stroller, and the folding operation is simple.

[ description of the drawings ]

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

FIG. 2 is one of the side views of the stroller of the present invention;

FIG. 3 is a second side view of the stroller of the present invention;

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

FIG. 5 is an enlarged view of the area J in FIG. 4;

FIG. 6 is an exploded view of the front legs, rear legs, struts, link and drive assembly of the stroller of the present invention;

FIG. 7 is a view of the stroller of the present invention in one of its states during folding;

FIG. 8 is a second state diagram of the stroller of the present invention during folding;

FIG. 9 is a perspective view of a seat assembly of the stroller of the present invention;

FIG. 10 is an exploded view of the seat assembly and operator of the stroller of the present invention;

FIG. 11 is one of the exploded views of the seat assembly of the stroller of the present invention;

FIG. 12 is a second exploded view of the seat assembly of the stroller of the present invention;

FIG. 13 is a front view of the slider in the stroller of the present invention;

FIG. 14 is a front view of the drive slot in the stroller of the present invention;

FIG. 15 is a perspective view of a drive slot in the stroller of the present invention;

FIG. 16 is a cross-sectional view of the stroller of the present invention with the armrest in the deployed position;

FIG. 17 is a cross-sectional view of the stroller of the present invention with the armrest in the collapsed position;

fig. 18 is a cross-sectional view of the stroller of the present invention with the arm rest in a collapsed position.

[ detailed description ] embodiments

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

as shown in fig. 1 to 18, the present invention provides a stroller movable from an unfolded position to a folded position upon release of a locking device, comprising:

the front leg 11, the said front leg 11 connects with the front wheel 111;

a stay 13 rotatably connected to the rear leg 12 about a second axis B;

When the child stroller is folded, the locking device is unlocked, the supporting rod 13 is pushed, the supporting rod 13 rotates around the second axis B to be close to the rear leg 12, when the supporting rod 13 rotates, the lower end of the supporting rod 13 moves upwards to drive the driving assembly 15 to move, the driving assembly 15 drives the connecting frame 14 to be close to the front leg 11 when moving, the supporting rod 13 also drives the linkage assembly 16 to move in the process, when the linkage assembly 16 moves, the linkage assembly 16 drives the front leg 11 to be close to the rear leg 12 until the supporting rod 13 and the rear leg 12 are close to each other, the whole child stroller is folded when the connecting frame 14 and the front leg 11 are close to each other, the folding of the whole stroller can be completed only by operating the supporting rod 13 after unlocking, and the folding operation is simple.

As shown in fig. 6, the stay 13 includes a rod 131, a protrusion 132 protruding outward is disposed on the rod 131, the protrusion 132 is rotatably connected to the rear leg 12 around a second axis B, the connecting frame 14 is rotatably connected to the protrusion 132 around a third axis C, and the third axis C is offset from the second axis B. When the protrusion 132 rotates about the second axis B relative to the rear leg 12, the protrusion 132 moves the connecting frame 14 upward and rotates about the third axis C.

As shown in fig. 6, the connecting frame 14 includes a base 141 and an extending piece 142 connected to the base 141 and extending downward, the lower end of the extending piece 142 rotates around a third axis C and is connected to the protruding portion 132, the front leg 11 includes a front leg rod 112 and a connecting piece 113 connected to the front leg rod 112 and extending upward and crossing the extending piece 142, the driving assembly 15 includes a pin 151 capable of passing through the connecting piece 113 and the extending piece 142 and fixed to the connecting piece 113, and the extending piece 142 is provided with a guiding groove 152 capable of yielding for the pin 151 and guiding the connecting frame 14 to approach the front leg 11 when the supporting rod 13 rotates to approach the rear leg 12. When the protruding portion 132 rotates around the second axis B relative to the rear leg 12, the lower end of the extending piece 142 moves upward along with the protruding portion 132, and the extending piece 142 also rotates around the third axis C relative to the protruding portion 132 during the movement, and the guiding slot 152 on the extending piece 142 moves along the bolt 151 during the movement of the extending piece 142, so that the seat body 141 rotates downward and gradually approaches the front leg 11.

As shown in fig. 3 and 7, the linkage assembly 16 includes a first linkage rod 161 having a rear end rotatably connected to the rear leg 12 about a fourth axis D, the front leg 11 is rotatably connected to a second linkage rod 162 about a fifth axis E, the rear end of the second linkage rod 162 is rotatably connected to the front end of the first linkage rod 161 about a sixth axis F, the protrusion 132 is rotatably connected to a third linkage rod 163 about a seventh axis G, and the lower end of the third linkage rod 163 is rotatably connected to the front end of the first linkage rod 161 about an eighth axis H. When the protrusion 132 rotates around the second axis B relative to the rear leg 12, the upper end of the third linkage bar 163 moves upward under the driving of the protrusion 132 and rotates around the seventh axis G relative to the protrusion 132, the lower end of the third linkage bar 163 pulls the front end of the first linkage bar 161 and the rear end of the second linkage bar 162 to move upward simultaneously, the front end of the first linkage bar 161 moves upward and rotates around the eighth axis H relative to the lower end of the third linkage bar 163 simultaneously, the rear end of the first linkage bar 161 rotates around the fourth axis D relative to the rear leg 12, and the front end of the second linkage bar 162 rotates around the fifth axis E relative to the front leg 11 when the rear end of the second linkage bar 162 rotates relative to the lower end of the third linkage bar 163, at this time, the front leg 11 is pulled by the first linkage bar 161, the second linkage bar 162 and the third linkage bar 163 in a matching manner to approach the rear leg 12.

As shown in fig. 11 to 12, the stroller further includes a seat assembly 2 connected to the connecting frame 14, the seat assembly 2 includes a seat portion 21 connected to the connecting frame 14, the seat portion 21 is connected to a backrest portion 22 capable of rotating relative to the seat portion to adjust the angle between the seat portion and the backrest portion, and a locking device 23 capable of locking the seat portion 21 and the backrest portion 22 is further disposed between the seat portion and the backrest portion. The seat assembly 2 can be deployed rearwardly for seating a child in a recumbent or seated position for comfort, and the back portion 22 can be pivoted toward the seat portion 21 after the lock 23 is unlocked.

As shown in fig. 11 to 12, the locking device 23 includes a plurality of engaging positions 231 circumferentially disposed on the seat portion 21, the backrest portion 22 is further connected with an engaging member 232 capable of sliding relative to the seat portion to engage with or disengage from the engaging positions 231, the backrest portion 22 is provided with an operating member 233 capable of sliding relative to the seat portion, a cable 234 is disposed between the operating member 233 and the engaging member 232, a second elastic member 235 capable of keeping the engaging member 232 in a locked state is disposed between the backrest portion 22 and the engaging member 232, and an elastic restoring member 236 capable of restoring the operating member 233 is disposed between the operating member 233 and the backrest portion 22. When the angle gear of the backrest 22 relative to the seat 21 needs to be adjusted, the operating member 233 is operated first, the operating member 233 moves upward after being operated and pulls the cable 234 to move and compress the elastic return member 236, the cable 234 pulls the engaging member 232 to move, at this time, the engaging member 232 slides transversely relative to the backrest 22 and is disengaged from the engaging position 231 on the seat 21, the backrest 22 can rotate relative to the seat 21 to adjust the gear, and after the backrest 22 is adjusted to a certain position, the engaging member 232 aligns with another engaging position 231, at this time, the second elastic member 235 drives the engaging member 232 to return, the engaging member 232 again engages into the engaging position 231 and locks the backrest 22 and the seat 21 again.

As shown in fig. 11 to 12, an armrest 24 is further connected to the seat portion 21, and a locking assembly 25 capable of locking the armrest 24, the seat portion 21, and the backrest portion 22 is further provided therebetween. The locking assembly 25 is used to secure the armrest 24 to the seat portion 21 and the backrest portion 22.

As shown in fig. 11 to 12, the locking assembly 25 includes a latch 251 provided on the handle 24, the seat portion 21 is provided with a sliding block 252 capable of sliding relative to the seat portion and abutting against or separating from the block 251, the slide block 252 is connected with a pin shaft 253 which can extend into the backrest part 22 and drive the slide block 252 to slide to separate from the block 251 when being pressed, the backrest part 22 is provided with a driving groove 254 which can push the pin shaft 253 to slide relative to the seat part 21 when the backrest part 22 rotates relative to the seat part 21, the driving groove 254 is provided with a driving surface 255 capable of pressing the pin shaft 253 when the backrest part 22 is folded toward the seat part 21, an elastic pressing element 256 for keeping the sliding block 252 and the block 251 in a pressed state is further disposed between the sliding block 252 and the seat portion 21, the seat portion 21 is further provided with a guiding sliding hole 257 through which the pin 253 passes and which can guide the pin 253 to vertically slide relative to the seat portion 21. When the seat assembly 2 needs to be folded, the locking device 23 is unlocked, the backrest portion 22 is pushed to rotate towards the seat portion 21, the driving surface 255 of the driving groove 254 on the backrest portion 22 pushes the pin 253 to slide downwards relative to the seat portion 21 along the guiding sliding hole 257 on the seat portion 21 in the process that the backrest portion 22 rotates towards the seat portion 21, the pin 253 drives the sliding block 252 to slide downwards relative to the seat portion 21 when sliding, at the same time, the sliding block 252 is separated from the clamping block 251 on the armrest 24, the armrest 24 can rotate relative to the seat portion 21 and the backrest portion 22, and when the armrest 24 rotates to the preset position and the backrest portion 22 is closed to the seat portion 21, the seat assembly 2 is folded. The user can unlock the armrest 24 only by pushing the backrest part 22 to rotate toward the seat part 21 after unlocking the locking device 23, and the unlocking operation is convenient.

As shown in fig. 16 to 18, the fixture block 251 is provided with a first abutting surface 2511, the slider 252 is provided with a second abutting surface 2521 abutting against the first abutting surface 2511, the top of the slider 252 is provided with an inclined sliding surface 2522, and the fixture block 251 is further provided with a pressing surface 2512 capable of pressing the inclined sliding surface 2522 to slide the slider 252 when the armrest is unfolded relative to the seat 21. When the seat assembly 2 is unfolded, the pressing surface 2512 of the fixture block 251 on the armrest 24 presses against the inclined sliding surface 2522 of the slider 252, so that the slider 252 slides downward relative to the seat portion 21, and when the armrest 24 is unfolded to a predetermined position, the pressing surface 2512 is separated from the inclined sliding surface 2522, at this time, the slider 252 slides upward relative to the seat portion 21 under the driving of the elastic pressing member 256, when the slider 252 slides to the proper position, the second abutting surface 2521 on the slider 252 and the first abutting surface 2511 on the fixture block 251 cooperate with each other to abut against, so that the armrest 24 cannot rotate relative to the seat portion 21, at this time, the armrest 24 is locked with the seat portion 21 and the backrest portion 22, and the entire seat assembly 2 is in the unfolded state.

As shown in fig. 4 to 5, the locking device 17 includes a locking member 171 connected to the front leg 11, the stay 13 is rotatably connected to a hook 172 capable of locking or disengaging with the locking member 171 when moving relative to the stay 13 around a ninth axis I, a first elastic member 173 capable of keeping the hook 172 in a locked state is further disposed between the hook 172 and the stay 13, and a hand push rod 18 capable of pushing the hook 172 to rotate to disengage the hook 172 from the locking member 171 when sliding relative to the stay 13 is further connected to the stay 13. Latch 171 is a transverse shaft. When the stroller needs to be folded, the push rod 18 is pushed to slide downwards along the stay bar 13, in the sliding process of the push rod 18, the push rod 18 gradually abuts against the upper end of the hook 172, at this time, the hook 172 rotates around the ninth axis I relative to the stay bar 13, in the rotating process of the hook 172, the hook 172 is also separated from the latch member 171 on the front leg 11, and at this time, the stay bar 13 can rotate relative to the rear leg 12.

Claims

1. A stroller movable from an unfolded position to a folded position upon release of a locking mechanism, comprising:

the front legs (11), the front wheels (111) are connected to the front legs (11);

the rear legs (12) are rotatably connected to the front legs (11) around a first axis (A), and the rear legs (12) are connected with rear wheels (121);

a stay bar (13) rotatably connected to the rear leg (12) about a second axis (B);

the connecting frame (14) is rotatably connected to the lower end of the stay bar (13) around a third axis (C), and a driving assembly (15) capable of driving the connecting frame (14) to approach the front leg (11) when the stay bar (13) rotates to approach the rear leg (12) is arranged between the connecting frame (14) and the front leg (11);

and linkage assemblies (16) which can drive the front legs (11) to approach the rear legs (12) when the support rods (13) rotate to approach the rear legs (12) are also arranged among the front legs (11), the rear legs (12) and the support rods (13).

2. The stroller of claim 1, wherein: vaulting pole (13) including the body of rod (131), the body of rod (131) on be equipped with outside convex bulge (132), bulge (132) rotate around second axis (B) and connect on back leg (12), link (14) rotate around third axis (C) and connect on bulge (132), just third axis (C) and second axis (B) skew.

3. The stroller of claim 2, wherein: link (14) include pedestal (141) and connect on pedestal (141) and extension piece (142) that the downward sloping extends, extension piece (142) lower extreme rotate around third axis (C) and connect on bulge (132), foreleg (11) including foreleg pole (112) and connect on foreleg pole (112) and the tilt up extend and with connection piece (113) cross arrangement's connection piece (113), drive assembly (15) including can transversely wear to establish connection piece (113) and extension piece (142) and fix bolt (151) on connection piece (113) simultaneously, extension piece (142) on be equipped with can for bolt (151) let a position and guide link (14) guiding guide groove (152) that the foreleg (11) were drawn close when vaulting pole (13) rotated to hind leg (12) and are drawn close.

4. The stroller of claim 2 or 3, wherein: linkage subassembly (16) include that the rear end rotates around fourth axis (D) and connects first gangbar (161) on back leg (12), preceding leg (11) on rotate around fifth axis (E) and be connected with second gangbar (162), second gangbar (162) rear end and first gangbar (161) front end rotate around sixth axis (F) and be connected, bulge (132) on rotate around seventh axis (G) and be connected with third gangbar (163), third gangbar (163) lower extreme and first gangbar (161) front end rotate around eighth axis (H) and be connected.

5. The stroller of claim 1, wherein: the stroller also comprises a seat assembly (2) connected to the connecting frame (14), the seat assembly (2) comprises a seat part (21) connected to the connecting frame (14), the seat part (21) is connected with a backrest part (22) capable of rotating relative to the seat part to adjust the included angle between the seat part and the backrest part, and a locking device (23) capable of locking the seat part and the backrest part is further arranged between the seat part (21) and the backrest part (22).

6. The stroller of claim 5, wherein: the locking device (23) comprises a plurality of clamping positions (231) arranged on the seat portion (21) along the circumferential direction, the backrest portion (22) is further connected with clamping pieces (232) capable of sliding relative to the backrest portion to clamp or separate from the clamping positions (231), the backrest portion (22) is provided with operating pieces (233) capable of sliding relative to the backrest portion, pull cables (234) are arranged between the operating pieces (233) and the clamping pieces (232), second elastic pieces (235) capable of enabling the clamping pieces (232) to keep a clamping state are arranged between the backrest portion (22) and the clamping pieces (232), and elastic reset pieces (236) capable of driving the operating pieces (233) to reset are arranged between the operating pieces (233) and the backrest portion (22).

7. The stroller of claim 5, wherein: the seat part (21) is also connected with an armrest (24), and a locking component (25) capable of locking the armrest (24), the seat part (21) and the backrest part (22) is also arranged among the armrest (24), the seat part (21) and the backrest part.

8. The stroller of claim 7, wherein: the locking assembly (25) comprises a clamping block (251) arranged on the armrest (24), a sliding block (252) which can slide relative to the seat portion (21) and is abutted to or separated from the clamping block (251) is arranged on the seat portion (21), a pin shaft (253) which can extend into the backrest portion (22) and drive the sliding block (252) to slide and be separated from the clamping block (251) when being abutted is connected onto the sliding block (252), a driving groove (254) which can abut against the pin shaft (253) to slide relative to the seat portion (21) when the backrest portion (22) rotates relative to the seat portion (21) is arranged on the backrest portion (22), a driving surface (255) which can abut against the pin shaft (253) when the backrest portion (22) is closed towards the seat portion (21) and folded is arranged on the driving groove (254), and an elastic abutting part (256) which can enable the sliding block (252) and the clamping block (251) to be kept in an abutting state is further arranged between the sliding block (252) and the seat portion (21), the seat part (21) is also provided with a guide sliding hole (257) for the pin shaft (253) to penetrate through and capable of guiding the pin shaft (253) to vertically slide relative to the seat part (21).

9. The stroller of claim 8, wherein: the armrest is characterized in that a first abutting surface (2511) is arranged on the clamping block (251), a second abutting surface (2521) abutting against the first abutting surface (2511) is arranged on the sliding block (252), an inclined sliding surface (2522) is arranged at the top of the sliding block (252), and an abutting surface (2512) capable of abutting against the inclined sliding surface (2522) when the armrest is unfolded relative to the seat portion (21) to enable the sliding block (252) to slide is further arranged on the clamping block (251).

10. The stroller of claim 1, wherein: locking device (17) including connecting in latch fitting (171) on preceding leg (11), vaulting pole (13) on rotate around ninth axis (I) and be connected with can with latch fitting (171) kayser or trip (172) that break away from when relative vaulting pole (13) activity, trip (172) and vaulting pole (13) between still be equipped with and to make trip (172) keep first elastic component (173) of kayser state, vaulting pole (13) in still be connected with and to push up trip (172) and rotate and make trip (172) break away from handspike (18) of latch fitting (171) when sliding relative it.