CN214776130U

CN214776130U - a baby carriage

Info

Publication number: CN214776130U
Application number: CN202121040879.4U
Authority: CN
Inventors: 平宙
Original assignee: Zhongshan Zetai Household Products Co ltd
Current assignee: Zhongshan Zetai Household Products Co ltd
Priority date: 2021-05-14
Filing date: 2021-05-14
Publication date: 2021-11-19
Anticipated expiration: 2031-05-14

Abstract

The utility model discloses a baby carriage, which can be moved from an unfolded position to a folded position after a locking device is unlocked; a front leg, the lower end of the front leg is connected with a front wheel assembly; the rear leg, the lower end of the rear leg is connected with a rear wheel assembly, and the rear leg is rotatably connected to the front leg around the first axis A; a strut, the lower end of the strut is rotatably connected to the upper end of the front leg or the upper end of the rear leg around the second axis B; the rear leg A linkage member is movably provided between the strut and the strut, which can pull the rear leg toward the front leg when the strut rotates and moves toward the front leg. The folding operation of the utility model is very simple and quick, and the whole baby carriage is simple in structure, low in cost, small in volume after being folded, and very easy to carry.

Description

Baby carriage

[ technical field ] A method for producing a semiconductor device

The utility model relates to a baby carriage.

[ background of the invention ]

Strollers have become an impossible or missing product for infants during their growth. Current strollers are generally collapsible for portability. But the volume of the traditional baby carriage is still larger after being folded, and the folding operation of the whole baby carriage is inconvenient, the structure is more complex and the cost is higher.

Therefore, the present invention is based on the above disadvantages.

[ Utility model ] content

The utility model aims at overcoming the defects of the prior art and providing a baby carriage which is convenient to fold and operate and small in size after being folded.

The utility model discloses a realize through following technical scheme:

a stroller movable from an unfolded position to a folded position after a locking device is unlocked, characterized in that:

the lower ends of the front legs 11 are connected with front wheel assemblies 111;

a rear leg 12, a rear wheel assembly 121 connected to the lower end of the rear leg 12, and the rear leg 12 rotatably connected to the front leg 11 about a first axis a;

the lower end of the support rod 13 is rotatably connected with the upper end of the front leg 11 or the upper end of the rear leg 12 around a second axis B;

a linkage part 14 which can pull the rear leg 12 to approach the front leg 11 when the stay bar 13 rotates to approach the front leg 11 is movably arranged between the rear leg 12 and the stay bar 13.

The stroller as described above, characterized in that: the stay 13 includes a rod body 131 and a stay seat 132 connected to the rod body 131, the rear leg 12 includes a rear leg rod 122 and a rear leg seat 123 connected to the rear leg rod 122, the lower end of the link 14 is rotatably connected to the eccentric position on the rear leg seat 123 around a third axis C, and the upper end of the link 14 is rotatably connected to the eccentric position on the stay seat 132 around a fourth axis D.

The stroller as described above, characterized in that: the front leg 11 comprises a front leg rod 112 and a front leg seat 113 connected to the upper end of the front leg rod 112, the rear leg seat 123 is rotatably connected to the front leg seat 113 around a first axis a, the supporting rod seat 132 is rotatably connected to the front leg seat 113 around a second axis B, and the linkage 14 is connected to the front leg seat 113.

The stroller as described above, characterized in that: locking device 2 locate and to lock the two each other between vaulting pole seat 132 and preceding leg base 113, locking device 2 including locating joint position 21 on preceding leg base 113, vaulting pole seat 132 on be equipped with relative its slip and with joint position 21 joint or the locking piece 22 that breaks away from, locking piece 22 on still be connected with and to stimulate the gliding first cable 23 of locking piece 22, locking piece 22 and vaulting pole seat 132 between be equipped with and to make the two keep the elastomer component 24 of locking state, vaulting pole 13 on still be connected with handspike 15, handspike 15 on be equipped with and to stimulate first cable 23 and make the locking piece 22 break away from first unblock piece 151 from joint position 21.

The stroller as described above, characterized in that: the seat assembly 3 is further connected to the front legs 11, the seat assembly 3 comprises a seat frame 31 connected to the front legs 11 and a backrest frame 32 rotatably connected to the seat frame 31 around a fifth axis E, and the seat frame 31 is further provided with a grab bar 4 rotatably connected to the seat frame 31 around a sixth axis F.

The stroller as described above, characterized in that: the seat frame 31 comprises a connecting seat 311 detachably connected with the front leg 11, a seat rod fixing seat 312 rotatably connected to the connecting seat 311 around a seventh axis G, and a seat rod 313 connected to the seat rod fixing seat 312, the back frame 32 comprises a back rod 321 and a back rod fixing seat 322 connected to the back rod 321 and rotatably connected to the seat rod fixing seat 312, a first locking device 5 capable of locking the seat rod fixing seat 312 and the connecting seat 311 with each other is arranged between the seat rod fixing seat 312 and the connecting seat 311, a second locking device 6 capable of locking the seat rod fixing seat 312 and the back rod fixing seat 4 with each other is arranged between the seat rod fixing seat 312 and the back rod fixing seat 322, a third locking device 7 capable of locking the seat rod fixing seat 312 and the back rod fixing seat 322 with each other is arranged between the seat rod fixing seat 312 and the back rod fixing seat 322, and when the third locking device 7 is unlocked and the back frame 32 is rotatably folded relative to the seat frame 31, the back rod fixing seat 322 drives the first locking device 5 and the second locking device 6 to be unlocked so that the back rod fixing seat 7 is locked with the back rod fixing seat 74 and the seat post 313 rotate toward the front leg 11.

The stroller as described above, characterized in that: a locking mechanism 8 capable of locking the connecting seat 311 and the front leg 11 is arranged between the two.

The stroller as described above, characterized in that: the locking mechanism 8 comprises a locking position 81 arranged on the front leg 11 and an operating element 82 slidably arranged on the connecting seat 311, wherein the operating element 82 is provided with a locking part 821 which can be clamped into the locking position 81 to lock the front leg 11 and the connecting seat 311, and an elastic element 83 which can enable the locking part 821 to keep a locking state is arranged between the operating element 82 and the connecting seat 311;

a delay locking device 9 is further arranged between the operating element 82 and the front leg 11, the delay locking device 9 comprises a protruding part 91 arranged on the front leg 11 and a rotating element 92 rotatably connected to the operating element 82 around an eighth axis H, a pressing part 921 is arranged on the rotating element 92 and can be mutually pressed against the protruding part 91 after the operating element 82 is operated so that the locking part 821 keeps a separated state, an elastic resetting element 93 capable of resetting the rotating element 92 is arranged between the rotating element 92 and the operating element 82, and a first inclined sliding surface 9211 capable of being matched with the protruding part 91 to slide when the operating element 82 transversely slides relative to the connecting seat 311 is arranged on the pressing part 921.

The stroller as described above, characterized in that: the seat bar fixing seat 312 is internally provided with a transverse jacking part 64 which can transversely slide relative to the seat bar fixing seat 312 to push out the clamping piece 61 from the locking position 62 when being jacked by the jacking sliding block 63, the clamping piece 61 can be kept in a clamping state between the clamping piece 61 and the seat bar fixing seat 4, and a second elastic element 65 which can push the jacking sliding block 63 to reset the jacking sliding block 63 is also arranged between the jacking sliding block 63 and the seat bar fixing seat 312 And an elastic element 66.

The stroller as described above, characterized in that: the first locking device 5 includes a plurality of fixing locations 51 disposed on the connecting base 311 and a fixing engaging portion 52 disposed on the pressing slider 63 and capable of engaging with the plurality of fixing locations 51 to prevent the seat bar fixing base 312 from rotating relative to the connecting base 311 when the first locking device 5 is not unlocked.

Compared with the prior art, the utility model discloses there is following advantage:

1. the utility model discloses the perambulator is when folding, at first unblock locking device, then promote the vaulting pole and rotate to draw close to the foreleg, and the vaulting pole activity is followed to the one end of linkage piece when the vaulting pole rotates and make the other end pulling back leg of linkage piece rotate to draw close to the foreleg, thereby accomplish the folding of perambulator, need not draw close to the foreleg with the hand pulling back leg among the whole folding process and just can realize the folding of whole perambulator, operate simple and convenient swift very, and whole perambulator simple structure, therefore, the carrier wave prepaid electric energy meter is low in cost, after folding small, and the carrying is very convenient.

2. The utility model provides a when seat subassembly needs to be folded, at first unblock third locking device, then promote the back pole, the back pole drives the back pole fixing base of its lower extreme and rotates, back pole fixing base rotates with relative seat pole fixing base this moment to when the back pole fixing base rotates, can order about first locking device and second locking device unblock, after first locking device and second locking device unblock, the handrail pole just draws close folding with the seat pole forward leg pole. The unlocking of the second locking device and the first locking device can be realized only by rotating the backrest rod fixing seat, and the unlocking is convenient for a user.

[ 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 a state diagram of the stroller of the present invention when folded;

FIG. 4 is a view showing the front legs, rear legs, stay bars and linkage members of the stroller of the present invention in a rotated and folded state;

fig. 5 is an exploded view of the locking device of the stroller of the present invention;

FIG. 6 is a perspective view of the seat assembly of the stroller of the present invention;

FIG. 7 is one of the exploded views of the seat assembly and front legs of the stroller of the present invention;

FIG. 8 is a second exploded view of the seat assembly and front legs of the stroller of the present invention;

FIG. 9 is a cross-sectional view of the locking mechanism and the delayed latch mechanism of the stroller of the present invention;

FIG. 10 is a perspective view of the operating member and the rotating member of the stroller of the present invention;

FIG. 11 is one of the exploded views of the third latch mechanism of the stroller of the present invention;

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

fig. 13 is one of exploded views of the first locking device of the stroller of the present invention;

fig. 14 is a second exploded view of the first closure of the stroller of the present invention;

fig. 15 is a cross-sectional view of a second locking device of the stroller of the present invention;

fig. 16 is a perspective view of the top pressure slider and the backrest rod fixing seat in the baby carriage of the present invention;

fig. 17 is a perspective view of the seat assembly of the stroller of the present invention when folded;

fig. 18 is a perspective view of the stroller of the present invention when folded;

fig. 19 is a side view of the stroller of the present invention when folded.

[ detailed description ] embodiments

The invention will be further described with reference to the accompanying drawings:

as shown in fig. 1 to 19, the present invention provides a stroller, which can be moved from a deployed position to a folded position after a locking device is unlocked,

The utility model discloses when folding, at first unblock locking device, then promote vaulting pole 13 and rotate to draw close to preceding leg 11, and the one end of linkage 14 when vaulting pole 13 rotates is followed the activity of vaulting pole 13 and is made the other end pulling back leg 12 of linkage 14 rotate to preceding leg 11 and draw close to, thereby accomplish the folding of perambulator, need not draw close to just can realize the folding of whole perambulator to preceding leg 11 with hand pulling back leg 12 among the whole folding process, operate simple and convenient swift very, and whole perambulator simple structure, therefore, the carrier wave prepaid electric energy meter is low in cost, after folding, small, and very portable.

As shown in fig. 4, the stay 13 includes a rod body 131 and a stay seat 132 connected to the rod body 131, the rear leg 12 includes a rear leg rod 122 and a rear leg seat 123 connected to the rear leg rod 122, the lower end of the link 14 is rotatably connected to an eccentric position on the rear leg seat 123 around a third axis C, and the upper end of the link 14 is rotatably connected to an eccentric position on the stay seat 132 around a fourth axis D. When the stroller is folded, the rotating stay bar 13 drives the upper end of the linkage 14 to move, so that the lower end of the linkage 14 drives the rear leg rod 122 to move closer to the front leg rod 112, and the stroller is flexible to fold.

As shown in fig. 4, the front leg 11 includes a front leg rod 112 and a front leg seat 113 connected to an upper end of the front leg rod 112, the rear leg seat 123 is rotatably connected to the front leg seat 113 about a first axis a, the stay seat 132 is rotatably connected to the front leg seat 113 about a second axis B, and the linkage 14 is connected to the front leg seat 113. When the supporting rod seat 132 rotates around the second axis B relative to the front leg seat 113, the upper end of the linkage 14 rotates along with the supporting rod seat 132 and drives the lower end of the linkage 14 to move, and when the lower end of the linkage 14 moves, the lower end of the linkage 14 drives the rear leg seat 123 to rotate around the first axis a relative to the front leg seat 113 so that the rear leg seat 123 drives the rear leg rod 122 to rotate, and the rear leg rod 122 is driven by the rear leg seat 123 to rotate and approach the front leg rod 112.

As shown in fig. 5, the locking device 2 is disposed between the supporting rod seat 132 and the front leg seat 113 and can lock the supporting rod seat 132 and the front leg seat 113 with each other, the locking device 2 includes a clamping position 21 disposed on the front leg seat 113, the supporting rod seat 132 is provided with a locking member 22 capable of sliding relative to the supporting rod seat and clamping or disengaging with the clamping position 21, the locking member 22 is further connected with a first cable 23 capable of pulling the locking member 22 to slide, the locking member 22 and the supporting rod seat 132 are provided with an elastic element 24 capable of keeping the locking member and the supporting rod seat in a locking state, the supporting rod 13 is further connected with a hand push rod 15, the hand push rod 15 is provided with a first unlocking member 151 capable of pulling the first cable 23 and disengaging the locking member 22 from the clamping position 21.

When the stroller needs to be folded, firstly, the first unlocking piece 151 on the push rod 15 is pressed, the first unlocking piece 151 pulls the first pulling rope 23 to move upwards, the first pulling rope 23 can pull the locking piece 22 to move upwards when moving, the locking piece 22 is separated from the clamping position 21 on the front leg seat 113 when moving upwards, at the moment, the locking device 2 is unlocked, and the push rod 15 can drive the rod body 131 and the support rod seat 132 to rotate relative to the front leg seat 113 and draw close to the front leg rod 112 to be folded.

As shown in fig. 6 and 17, the front leg 11 is further connected with a seat assembly 3, the seat assembly 3 includes a seat frame 31 connected to the front leg 11 and a back frame 32 rotatably connected to the seat frame 31 about a fifth axis E, and the seat frame 31 is further provided with a grab bar 4 rotatably connected thereto about a sixth axis F. Of course, instead of providing the seat unit 3 to the front leg 11, a flexible seat pocket may be attached to the stay 13, and the infant may be seated in the seat pocket.

As shown in fig. 6 to 17, the seat frame 31 includes a connecting seat 311 detachably connected to the front leg 11, a seat rod fixing seat 312 rotatably connected to the connecting seat 311 about a seventh axis G, and a seat rod 313 connected to the seat rod fixing seat 312, the back frame 32 includes a back rod 321 and a back rod fixing seat 322 connected to the back rod 321 and rotatably connected to the seat rod fixing seat 312, a first locking device 5 capable of locking the seat rod fixing seat 312 and the connecting seat 311 to each other is disposed between the seat rod fixing seat 312 and the connecting seat 311, a second locking device 6 capable of locking the seat rod fixing seat 312 and the handle rod fixing seat 4 to each other is disposed between the seat rod fixing seat 312 and the back rod fixing seat 312, a third locking device 7 capable of locking the seat rod fixing seat 312 and the back rod fixing seat 322 to each other is disposed between the third locking device 7 and the back frame 32 is rotatably folded with respect to the seat frame 31, the backrest rod fixing seat 322 drives the first locking device 5 and the second locking device 6 to unlock, so that the grab bar 4 and the seat rod 313 rotate towards the front legs 11. When the seat assembly 3 needs to be folded, the third locking device 7 is unlocked, then the backrest rod 321 is pushed, the backrest rod 321 drives the backrest rod fixing seat 322 at the lower end of the backrest rod 321 to rotate, at this time, the backrest rod fixing seat 322 rotates relative to the seat rod fixing seat 312, and when the backrest rod fixing seat 322 rotates, the first locking device 5 and the second locking device 6 can be driven to unlock, and after the first locking device 5 and the second locking device 6 are unlocked, the backrest rod 321 rotates and pushes the grab bar 4 and the seat rod 313 to be folded towards the front leg rod 112. The unlocking of the second locking device 6 and the first locking device 5 can be realized only by the rotation of the backrest rod fixing seat 322, and the unlocking is convenient for users.

As shown in fig. 7 to 9, a locking mechanism 8 is disposed between the connecting seat 311 and the front leg 11 for locking the two.

As shown in fig. 9, the locking mechanism 8 includes a locking position 81 provided on the front leg 11 and an operating member 82 slidably provided on the connecting seat 311, the operating member 82 is provided with a locking portion 821 capable of being locked into the locking position 81 to lock the front leg 11 and the connecting seat 311, and an elastic member 83 capable of keeping the locking portion 821 in a locking state is further provided between the operating member 82 and the connecting seat 311. When the seat assembly 3 needs to be detached from the front leg 11, the locking mechanism 8 needs to be unlocked, the operating member 82 on the connecting seat 311 is pressed, the operating member 82 presses the elastic member 83, so that the latch portion 821 on the operating member 82 is disengaged from the latch position 81 on the front leg 11, and at this time, the locking mechanism 8 is unlocked, and the seat assembly 3 can be detached from the front leg 11.

As shown in fig. 9 and 10, a delay latch 9 is further disposed between the operating element 82 and the front leg 11, the delay latch 9 includes a protrusion 91 disposed on the front leg 11 and a rotating element 92 rotatably connected to the operating element 82 around an eighth axis H, the rotating element 92 is provided with a pressing portion 921 capable of pressing against the protrusion 91 after the operating element 82 is operated to keep the latching portion 821 in a disengaged state, an elastic restoring element 93 capable of restoring the rotating element 92 is disposed between the rotating element 92 and the operating element 82, and the pressing portion 921 is provided with a first inclined sliding surface 9211 capable of sliding in cooperation with the protrusion 91 when the operating element 82 slides transversely relative to the connecting seat 311. The elastic return member 93 is a torsion spring.

When the operating element 82 is operated, the operating element 82 slides transversely relative to the front leg 11, so that when the operating element 82 slides transversely, the first inclined sliding surface 9211 on the rotating element 92 gradually contacts the protruding part 91 and is pressed by the protruding part 91, so that the rotating element 92 rotates upwards relative to the operating element 82 around the eighth axis H, the pressing part 921 on the rotating element 92 is disengaged from the protruding part 91 in the process of transverse movement of the operating element 82, the elastic resetting element 93 resets the rotating element 92, and the locking part 821 on the operating element 82 is kept in a state of being disengaged from the locking position 81 due to mutual abutting of the protruding part 91 and the pressing part 921, and the locking mechanism 8 is always in an unlocked state, so that a user can conveniently remove the seat assembly 3 from the front leg 11 without continuously pressing the operating element 82, and the use is more convenient.

As shown in fig. 11 and 12, the third locking device 7 includes a right hinge shell 71 disposed on the seat rod fixing seat 312 and a left hinge shell 72 disposed on the back rod fixing seat 322 and rotatably connected to the right hinge shell 71, a cavity 73 is defined between the left hinge shell 72 and the right hinge shell 71, spline grooves 74 are respectively disposed on inner walls of the left hinge shell 72 and the right hinge shell 71, a spline 75 is disposed in the cavity 73, a pressing member 76 capable of pushing the spline 75 to slide transversely to disengage from the spline groove 74 on the left hinge shell 72 is disposed between the spline 75 and the left hinge shell 72, a second pressing member 78 capable of pressing the spline 75 to simultaneously engage with the spline grooves 74 on the left hinge shell 72 and the right hinge shell 72 when the stroller is in the unfolded state is disposed between the spline 75 and the right hinge shell 71, and a pulling cable 76 is disposed on the pressing member 76 to pull the spline 76 to disengage the left hinge shell 72, the backrest rod 321 is provided with a second unlocking part 79 capable of pulling the second cable 78, the top pressing part 76 is provided with a second inclined sliding surface 761, and the left hinge shell 72 is internally provided with a third inclined sliding surface 721 capable of sliding in cooperation with the second inclined sliding surface 761.

When the stroller is folded, the seat assembly 3 is folded first, when the seat assembly 3 is folded, the third locking device 7 is unlocked first, the second unlocking piece 79 of the back lever 321 is pulled first, the second unlocking piece 79 drives the second cable 78 to move upwards, when the second cable 78 moves upwards, the jacking piece 76 moves, the second oblique sliding surface 761 on the jacking piece 76 is matched with the third oblique sliding surface 721 in the left hinge shell 72, so that the jacking piece 76 can push the spline 75 to move transversely, when the spline 75 moves transversely, the spring 77 is compressed and can be separated from the spline groove 74 on the left hinge shell 72 to enter the right hinge shell 71, at this time, the third locking device 7 is unlocked, and the back lever fixing seat 322 can rotate relative to the seat lever fixing seat 312, so that the back lever 321 can be folded towards the handrail lever 4.

As shown in fig. 14 to 16, the grab bar 4 is provided with a connecting portion 41 rotatably connected to the seat bar fixing seat 312 about a sixth axis F, the second locking device 6 includes a locking member 61 slidably disposed on the grab bar 4 and a locking position 62 disposed on the seat frame 31 and allowing the locking member 61 to be inserted or removed, the seat bar fixing seat 312 is further provided with a pressing slider 63 capable of being pressed by the back bar fixing seat 322 during rotation of the back bar fixing seat 322 and moving longitudinally relative to the seat bar fixing seat 312, the seat bar fixing seat 312 is further provided with a transverse pressing member 64 capable of transversely sliding relative to the seat bar fixing seat 312 to push the locking member 61 out of the locking position 62 when being pressed by the pressing slider 63, a first elastic element 65 capable of keeping the locking member 61 in a locked state is further disposed between the locking member 61 and the grab bar 4, a second elastic element 66 capable of pressing and resetting the pressing slide block 63 is further arranged between the pressing slide block 63 and the seat rod fixing seat 312. The top press sliding block 63 is provided with a fourth inclined sliding surface 631, and the transverse top press member 64 is provided with a fifth inclined sliding surface 641 which can slide in cooperation with the fourth inclined sliding surface 631. The lower end of the top pressing slide block 63 is provided with a sixth inclined sliding surface 632, and the backrest rod fixing seat 322 is further provided with a top pressing sliding surface 3221 which can push against the sixth inclined sliding surface 632 to push the top pressing slide block 63 to longitudinally slide in the process of rotating relative to the seat rod fixing seat 312. The first elastic element 65 and the second elastic element 66 are springs.

During the rotation of the back lever fixing seat 322, the pushing sliding surface 3221 on the back lever fixing seat 322 gradually contacts with the sixth inclined sliding surface 632 at the lower end of the pushing sliding block 63 and pushes against the pushing sliding block 63 to move upward, the pushing sliding block 63 compresses the second elastic element 66 when moving upward, and the pushing sliding block 63 pushes the pushing transverse pushing member 64 to slide transversely relative to the seat lever fixing seat 312 when moving upward through the cooperation of the fourth inclined sliding surface 631 on the pushing sliding block 63 and the fifth inclined sliding surface 641 on the transverse pushing member 64, the locking member 61 is pushed out from the locking position 62 when the transverse pushing member 64 slides, at this time, the second locking device 6 is unlocked, at this time, the back lever 321 can push the armrest lever 4 to rotate toward the seat lever 313 when the back lever 4 approaches toward the seat lever 313, or the armrest lever 4 automatically approaches toward the seat lever 313 under its own gravity.

As shown in fig. 15, the first locking device 5 includes a plurality of fixing locations 51 disposed on the connecting base 311 and a fixing engaging portion 52 disposed on the pressing slider 63 and capable of engaging with the plurality of fixing locations 51 to prevent the seat bar fixing base 312 from rotating relative to the connecting base 311 when the first locking device 5 is not unlocked. When the pressing slider 63 moves upward, the fixing engaging portion 52 on the pressing slider 63 is disengaged from the fixing position 51 on the connecting seat 311, and at this time, the first locking device 5 is unlocked, so that the entire seat rod fixing seat 312 can rotate relative to the connecting seat 311, so that when the seat assembly 3 is folded, as long as the first locking device 5 and the second locking device 6 are driven to be unlocked by the backrest fixing seat 322, the seat rod 313 and the armrest rod 4 can be drawn toward the front leg rod 112, thereby realizing the folding of the seat assembly 3.

As shown in fig. 19, the rear leg 12 is provided with a hook 124, the hook 124 is provided with a hook hole 1241, and the stay 13 is provided with a fastening member 133 capable of fastening or detaching from the hook hole 1241. After the stroller is folded, the clip 133 on the stay bar 13 is clipped into the hanging buckle hole 1241, so as to lock the rear leg 12 and the stay bar 13, thereby avoiding the misoperation and unfolding the stroller.

Claims

1. A stroller capable of moving from an unfolded position to a folded position after the locking device is unlocked, characterized in that:

a front leg (11), the lower end of the front leg (11) is connected with a front wheel assembly (111);

a rear leg (12), the lower end of the rear leg (12) is connected with a rear wheel assembly (121), and the rear leg (12) is rotatably connected to the front leg (11) around the first axis (A);

a strut (13), the lower end of the strut (13) is rotatably connected with the upper end of the front leg (11) or the upper end of the rear leg (12) around the second axis (B);

The rear leg (12) and the strut (13) are movably provided with the rear leg (12) to the front leg (11) when the strut (13) rotates and moves closer to the front leg (11) Closed linkage (14).

2. The stroller according to claim 1, characterized in that: the strut (13) comprises a rod body (131) and a strut seat (132) connected to the rod body (131), and the rear legs (12) comprising a rear leg rod (122) and a rear leg seat (123) connected to the rear leg rod (122), the lower end of the linkage (14) is rotatably connected to the rear of the link (14) around the third axis (C). The eccentric position on the leg seat (123), and the upper end of the linkage member (14) is rotatably connected to the eccentric position on the strut seat (132) around the fourth axis (D).

3. The stroller according to claim 2, wherein the front leg (11) comprises a front leg bar (112) and a front leg seat (113) connected to the upper end of the front leg bar (112), so The rear leg seat (123) is rotatably connected to the front leg seat (113) around the first axis (A), and the strut seat (132) is rotatable around the second axis (B). It is connected to the front leg seat (113), and the linkage member (14) is connected to the front leg seat (113).

4 . The stroller according to claim 3 , wherein the locking device ( 2 ) is arranged between the strut seat ( 132 ) and the front leg seat ( 113 ) and can lock the two to each other, so The locking device (2) includes a latching position (21) provided on the front leg seat (113), and the strut seat (132) is provided with a latching position (21) which can slide relative to the latching position (21). The locking piece (22) is connected or disengaged, the locking piece (22) is also connected with a first cable (23) capable of pulling the locking piece (22) to slide, and the locking piece (22) is connected to the strut Between the seats (132), there is an elastic body element (24) that can keep the two in a locked state, and a hand push rod (15) is also connected to the support rod (13), and the hand push rod (15) ) is provided with a first unlocking member (151) capable of pulling the first pulling cable (23) to make the locking member (22) disengage from the latching position (21).

5. The stroller according to any one of claims 1 to 4, characterized in that: the front legs (11) are further connected with a seat assembly (3), and the seat assembly (3) A seat frame (31) connected to the front legs (11) and a backrest frame (32) rotatably connected to the seat frame (31) around the fifth axis (E), the seat frame (31) There is also a handrail (4) rotatably connected to it about a sixth axis (F).

6 . The stroller according to claim 5 , wherein the seat frame ( 31 ) comprises a connecting seat ( 311 ) detachably connected with the front leg ( 11 ), and is movable around the seventh axis (G). 7 . A seat post holder (312) rotatably connected to the connecting base (311) and a seat post (313) connected to the seat post holder (312), the backrest frame (32) includes a backrest post (321) and a backrest bar fixing seat (322) connected to the backrest bar (321) and rotatably connected with the seat post fixing seat (312), between the seat post fixing seat (312) and the connecting seat (311) A first locking device (5) for locking the two with each other, and a second locking device (6) for locking the two between the armrest bar (4) and the seat bar fixing seat (312), A third locking device (7) capable of locking the two to each other is provided between the seat post fixing seat (312) and the backrest bar fixing seat (322), when the third locking device (7) is unlocked and the backrest When the frame (32) is rotated and folded relative to the seat frame (31), the backrest bar fixing seat (322) drives the first locking device (5) and the second locking device (6) to unlock so that the armrest bar (4) is unlocked. And the seat post (313) is rotated towards the front legs (11).

7. The stroller according to claim 6, characterized in that: a locking mechanism (8) capable of locking the two to each other is provided between the connecting seat (311) and the front leg (11).

8 . The stroller according to claim 7 , wherein the locking mechanism ( 8 ) comprises a locking position ( 81 ) provided on the front leg ( 11 ) and a locking position ( 81 ) slidably provided on the connecting seat ( 8 . 311) on the operating member (82), the operating member (82) is provided with a locking portion that can be snapped into the locking position (81) to lock the front leg (11) and the connecting seat (311) (821), and between the operating member (82) and the connecting seat (311), an elastic member (83) capable of keeping the locking portion (821) in a locked state is further provided;

A delay locking device (9) is also provided between the operating member (82) and the front leg (11), and the delay locking device (9) includes a protruding part (9) provided on the front leg (11). 91) and a rotating member (92) that is rotatably connected to the operating member (82) around the eighth axis (H), the rotating member (92) is provided with a convex connection after the operating member (82) is operated. The outgoing parts (91) abut against each other to keep the locking part (821) in a disengaged state. 92) The elastic reset member (93) for reset, and the top pressing part (921) is provided with a sliding part that can cooperate with the protruding part (91) when the operating member (82) slides laterally relative to the connecting seat (311). The first inclined sliding surface (9211).

9. The stroller according to claim 6, characterized in that: the armrest bar (4) is provided with a connecting portion (41) that is rotatably connected to the seat bar fixing seat (312) around the sixth axis (F). ), the second locking device (6) comprises a locking member (61) slidably arranged on the armrest (4) and a locking member (61) arranged on the seat frame (31) and capable of supplying the locking member (61) A locking position (62) for insertion or disengagement, the seat post fixing seat (312) is further provided with a position in the seat post fixing seat (312) which can be pressed against the backrest bar fixing seat (322) during the rotation of the backrest bar fixing seat (322) A pressing slider (63) that moves longitudinally on the seat post holder (312), the seat post holder (312) is also provided with a pressing slider (63) that can be fixed relative to the seat post when being pressed by the pressing slider (63). The seat (312) slides laterally to push the latch (61) out of the locking position (62) with a lateral pusher (64), the latch (61) and the handrail (4) are also provided with There is a first elastic element (65) that can keep the latching member (61) in a latched state, and between the push-up slider (63) and the seat post fixing seat (312) is also provided with a push-up push-up slider (312). The second elastic element (66) for the reset of the block (63).

10 . The stroller according to claim 6 , wherein the first locking device ( 5 ) comprises a plurality of fixing positions ( 51 ) arranged on the connecting seat ( 311 ) and a plurality of fixing positions ( 51 ) arranged on the top pressure slide. 11 . Block (63) and can be engaged with a plurality of fixing positions (51) to prevent the seat post fixing seat (312) from rotating relative to the connecting seat (311) when the first locking device (5) is not unlocked. 52).