CN211617832U

CN211617832U - Baby carriage frame

Info

Publication number: CN211617832U
Application number: CN201922319569.5U
Authority: CN
Inventors: 唐启佑
Original assignee: Zhongshan Yuyu Baby Products Co ltd
Current assignee: Zhongshan Yuyu Baby Products Co ltd
Priority date: 2019-12-20
Filing date: 2019-12-20
Publication date: 2020-10-02
Anticipated expiration: 2029-12-20

Abstract

The utility model discloses a baby carriage frame, a front support mechanism comprises front legs, the lower ends of the front legs are connected with front wheels; the sliding piece is arranged on the front leg and can slide along the front leg; the rear support mechanism comprises a rear leg, the lower end of the rear leg is connected with a rear wheel, the rear support mechanism is rotatably connected with the sliding piece, and a first transmission piece connected with the rear support mechanism and the front support mechanism is arranged between the rear support mechanism and the front support mechanism; the middle support mechanism is rotationally connected with the sliding piece, and a second transmission piece connected with the middle support mechanism and the front support mechanism is arranged between the middle support mechanism and the front support mechanism; the push rod mechanism is movably connected to the middle support mechanism and can be folded towards the middle support mechanism; when the baby carriage frame is folded, the sliding piece slides along the front leg and can bring the back support mechanism, the first transmission piece, the middle support mechanism and the second transmission piece together to close and fold towards the front leg. The utility model discloses simple structure, it is nimble to close to receive, low cost to folding back is small and can provide the high view field of vision after expanding.

Description

Baby carriage frame

[ technical field ] A method for producing a semiconductor device

The utility model relates to a baby carriage frame.

[ background of the invention ]

The baby carriage is an indispensable product in the growth process of infants. The volume size after folding and the height of the seat when unfolding are important indexes for measuring the quality of the baby carriage. The small folded volume and the high seat when unfolded are the objectives of many stroller manufacturers at present, because the small folded volume can be carried conveniently, and the high seat can provide a wider field of view for the infant seated in the stroller, and at the same time, the high seat can prevent the infant from adsorbing dust raised up to the ground as much as possible. However, the common infant car frame in the market at present cannot achieve the two aspects of beauty, and even the infant car frame capable of achieving the beauty is complex in structure, easy to clamp when folded and high in cost.

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, providing a baby carriage frame which has simple structure, flexible folding and unfolding, low cost, small volume after folding and capability of providing high landscape vision after unfolding.

The utility model discloses a realize through following technical scheme:

infant's car frame can move from the development position to folding position, its characterized in that: the method comprises the following steps:

the front support mechanism 1, the said front support mechanism 1 includes the front leg 11, the said front leg 11 underpart connects with the front wheel 12;

the sliding piece 2 is arranged on the front leg 11 and can slide along the front leg 11;

the baby stroller frame comprises a rear support mechanism 3, wherein the rear support mechanism 3 comprises a rear leg 31, the lower end of the rear leg 31 is connected with a rear wheel 32, the rear support mechanism 3 is rotatably connected with a sliding piece 2, a first transmission piece 4 connected with the rear support mechanism 3 and the front support mechanism 1 is arranged between the rear support mechanism 3 and the front support mechanism 1, and when the baby stroller frame is folded, the sliding piece 2 slides along a front leg 11 to bring the rear support mechanism 3 and the first transmission piece 4 together to be close to and folded towards the front leg 11;

the middle support mechanism 5 is rotatably connected with the sliding piece 2, a second transmission piece 6 connected with the middle support mechanism 5 and the front support mechanism 1 is further arranged between the middle support mechanism 5 and the front support mechanism 1, and when the infant frame is folded, the sliding piece 2 slides along the front legs 11 to bring the middle support mechanism 5 and the second transmission piece 6 together to be close to and folded towards the front legs 11;

the push rod mechanism 7 is movably connected to the middle support mechanism 5, and when the infant frame is folded, the push rod mechanism 7 is close to the middle support mechanism 5 and is close to the front legs 11 together with the middle support mechanism 5.

The infant carrier as described above is characterized in that: when the infant carriage is unfolded, the middle support mechanism 5 is vertically arranged.

The infant carrier as described above is characterized in that: the upper end of the rear leg 31 is hinged with the sliding part 2, the lower end of the rear leg 31 is provided with a first connecting lug 33, and the first transmission part 4 is a first transmission rod 41, one end of which is hinged with the first connecting lug 33, and the other end of which is hinged with the upper end of the front leg 11.

The infant carrier as described above is characterized in that: the middle support mechanism 5 comprises a middle support rod 51 which is vertically arranged, a lower connecting lug 52 is arranged at the lower end of the middle support rod 51, an upper connecting lug 53 is arranged on the middle support rod 51 and above the lower connecting lug 52, the lower connecting lug 52 is hinged with the sliding piece 2, and the second transmission piece 6 is a second transmission rod 61, one end of the second transmission piece is hinged with the upper connecting lug 53, and the other end of the second transmission piece is hinged with the upper end of the front leg 11.

The infant carrier as described above is characterized in that: the push rod mechanism 7 comprises a push rod 71, and the push rod 71 is rotatably connected with the middle support rod 51.

The infant carrier as described above is characterized in that: the push rod 71 is connected with an extension rod 72 which can slide relative to the push rod.

The infant carrier as described above is characterized in that: the push rod 71 is connected with an extension handle 73 which can rotate and fold relative to the push rod.

The infant carrier as described above is characterized in that: the sliding part 2 comprises a sliding sleeve 21 sleeved on the front leg 11, a convex lug 22 is arranged on the sliding sleeve 21, and the rear leg 31 and the lower connecting lug 52 are hinged with the convex lug 22.

The infant carrier as described above is characterized in that: push rod mechanism 7 include push rod 71, push rod 71 and well vaulting pole 51 rotate and be connected, push rod 71 on be connected with the extension rod 72 that can slide relative to it, sliding sleeve 21 and preceding leg 11 between be equipped with third kayser mechanism 93, push rod 71 and well vaulting pole 51 between be equipped with second kayser mechanism 92, extension rod 72 and push rod 71 between be equipped with first kayser mechanism 91, when extension rod 72 along push rod 71 downstream, extension rod 72 drive second kayser mechanism 92 unblock and push rod 71 drive third kayser mechanism 93 unblock when the relative vaulting pole 51 of push rod 71 rotates.

The infant carrier as described above is characterized in that: the first locking mechanism 91 comprises a first locking hole 911 arranged on the push rod 71, a first locking pin 912 capable of being locked with the first locking hole 911 and a first inhaul cable 913 capable of pulling the first locking pin 912 to transversely move to be separated from the first locking hole 911 are arranged in the extension rod 72, and a first spring 914 capable of keeping the first locking pin 912 and the first locking hole 911 locked when the infant stroller frame is unfolded is further arranged in the extension rod 72; the second locking mechanism 92 comprises a locking piece 921 rotatably connected to the lower end of the push rod 71, the locking piece 921 comprises a locking rod 9211, the lower end of the locking rod 9211 is provided with a locking hook 9212 which can be locked with a clamping position 922 at the upper end of the middle stay rod 51, the upper end of the locking rod 9211 is provided with a driving part 9213 which can be pushed by an extension rod 72 moving downwards, when the extension rod 72 pushes the driving part 9213, the locking rod 9211 rotates to enable the locking hook 9212 to be separated from the clamping position 922, and a second spring 923 which can enable the locking hook 9212 to be locked with the clamping position 922 when the infant stroller frame is unfolded is further arranged in the push rod 71; the third latch mechanism 93 includes a second latch hole 931 disposed on the front leg 11, a second latch 932 disposed in the protruding ear 22 and capable of engaging with or disengaging from the second latch hole 931, the second latch 932 is connected with a transverse block 933, a rotatable rotating sleeve 934 is disposed in a space formed by the abutting of the lower connecting ear 52 and the protruding ear 22, a special-shaped hole 935 disposed in the rotating sleeve 934 and capable of cooperating with the transverse block 933 to disengage the second latch 932 from the second latch hole 931 when the rotating sleeve 934 rotates, a third spring 936 capable of retaining the second latch 932 and the second latch 931 when the infant stroller is unfolded is further disposed in the protruding ear 22, a second cable 937 connected with the rotating sleeve 934 and capable of pulling the rotating sleeve 934 to rotate is disposed in the middle supporting rod 51, a transverse column 938 is connected to the upper end of the second cable 937, a transverse column 938 is disposed at the lower end of the push rod 71 and capable of inserting the transverse column 938 and pushing the transverse column 938 when the push rod 71 rotates Pulling the drive groove 939 of the second cable 937.

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

1. the utility model discloses when infant's frame is folding, at first prop the mechanism with push rod mechanism to well and draw close, then make the slider slide along the front leg, the slider just drives the back at the in-process that slides and props the mechanism and first driving part draws close foldingly to the front leg, meanwhile, the slider also drives in prop mechanism and second driving part and draw close foldingly to the front leg, final push rod mechanism, in prop the mechanism, prop the mechanism after, first driving part and second driving part all draw close foldingly to the front leg, the length of final infant's frame at fold condition is roughly equal with the length that props the mechanism before with, thereby guarantee folding back small, and whole folding motion process is simple, only need push rod mechanism to prop the mechanism to well and draw close and the slider slides along the front leg, it is nimble smooth and easy to close to receive. In addition, the front support mechanism is provided with the middle support mechanism, so that the height of the infant car frame can be increased, the seat of the infant car can be arranged on the middle support mechanism, when the infant car frame is in an unfolded state, an infant sitting in the seat can have a high-landscape view and can be far away from dust on the ground as far as possible, and a user can be close to the infant in the car when pushing the infant car to walk, can interact with the infant only by slightly bending down, and can conveniently take care of the infant, so that the infant is more humanized.

2. The utility model discloses when infant's vehicle frame expandes the state, well prop the mechanism and be vertical setting for infant's vehicle frame has higher height in the expansion state, provides wider field of vision for infant, makes infant keep away from the dust that ground was raised as far as possible. And when the baby carriage frame is folded, the middle support mechanism can be flexibly carried by the sliding piece to be drawn close to the front legs for folding, so that the whole baby carriage frame is flexibly folded.

3. The utility model discloses simple structure, it is nimble to close to receive, low cost, folding back small is in the deposit or carry, for the infant provides high view field of vision after the expansion, is fit for popularizing and applying.

[ description of the drawings ]

Fig. 1 is a perspective view of embodiment 1 of the present invention;

fig. 2 is a side view of the embodiment 1 of the present invention in an unfolded state;

fig. 3 is one of the side views in the folding process of embodiment 1 of the present invention;

fig. 4 is a second side view of the folding process of embodiment 1 of the present invention;

fig. 5 is a side view of embodiment 1 of the present invention in a folded state;

fig. 6 is a perspective view of a component of embodiment 1 of the present invention;

fig. 7 is one of exploded views of the components of embodiment 1 of the present invention;

fig. 8 is a second exploded view of the components of embodiment 1 of the present invention;

figure 9 is one of the cross-sectional views of the components of embodiment 1 of the invention;

fig. 10 is a second cross-sectional view of the components of embodiment 1 of the present invention;

fig. 11 is a third exploded view of the components of embodiment 1 of the present invention;

fig. 12 is a side view of embodiment 2 of the present invention;

fig. 13 is a side view of embodiment 3 of the present invention;

fig. 14 is a perspective view of embodiment 1 of the present invention with a seat attached.

[ detailed description ] embodiments

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

example 1:

as shown in FIGS. 1-5, the stroller frame, which is movable from an unfolded position to a folded position, includes:

As shown in fig. 1 to 5, when the infant stroller is folded, the push rod mechanism 7 is first drawn toward the middle support mechanism 5, then the sliding member 2 slides along the front leg 11, the sliding member 2 drives the rear support mechanism 3 and the first transmission member 4 to draw toward and fold toward the front leg 11 during sliding, meanwhile, the sliding member 2 also drives the middle support mechanism 5 and the second transmission member 6 to draw toward and fold toward the front leg 11, finally, the push rod mechanism 7, the middle support mechanism 5, the rear support mechanism 3, the first transmission member 4 and the second transmission member 6 are all drawn toward and folded toward the front leg 11, and finally, the length of the infant stroller in the folded state is approximately equal to the length of the front support mechanism 1, so that the folded volume is small, the whole folding movement process is simple, and the folding can be performed only by drawing the push rod mechanism 7 toward the middle support mechanism 5 and sliding the sliding member 2 along the front leg 11, and the folding is flexible and smooth. In addition, the front support mechanism 1 is provided with the middle support mechanism 5, so that the height of the infant car frame can be increased, the seat of the infant car can be arranged on the middle support mechanism, when the infant car frame is in an unfolded state, an infant sitting in the seat can have a high landscape view and can be far away from dust on the ground as far as possible, and a user can be close to the infant in the car when pushing the infant car to walk, can interact with the infant just by slightly bending down, and can conveniently take care of the infant, thereby being more humanized. As shown in FIG. 14, the stroller seat 8 can be fixedly or removably attached to the upper end of the center stay 5, and the stroller frame can be folded after folding the stroller seat 8.

In this embodiment, two of each of the front legs 11 and the rear legs 31 allow the stroller frame to be a four-wheel frame. Of course, a tricycle frame may be provided in which there are two front legs 11 and one rear leg 31, or one front leg 11 and two rear legs 31.

As shown in fig. 1 to 2, when the infant stroller is unfolded, the middle supporting mechanism 5 is vertically disposed, so that the infant stroller has a higher height in the unfolded state, and provides a wider field of view for the infant, and the infant can lift dust as far as possible from the ground. And when the baby carriage is folded, the middle support mechanism 5 can be flexibly folded by the sliding piece 2 with the front legs 11, so that the whole baby carriage is flexibly folded.

As shown in fig. 1 to 5, the upper end of the rear leg 31 is hinged to the sliding member 2 about the axis I, the lower end of the rear leg 31 is provided with a first connecting lug 33, and the first transmission member 4 is a first transmission rod 41, one end of which is hinged to the first connecting lug 33 about the axis J, and the other end of which is hinged to the upper end of the front leg 11 about the axis K. Therefore, when the sliding member 2 slides along the front leg 11, the sliding member 2 can drive the back-support mechanism 3 and the first transmission member 4 to be more flexibly folded toward the front leg 11, so that the infant frame can be flexibly folded.

As shown in fig. 1 to 5, the middle supporting mechanism 5 includes a middle supporting rod 51 vertically disposed, a lower engaging lug 52 is disposed at a lower end of the middle supporting rod 51, an upper engaging lug 53 is disposed on the middle supporting rod 51 and above the lower engaging lug 52, the lower engaging lug 52 is hinged to the sliding member 2 about an axis L, in this embodiment, the axis L and the axis I coincide to form a same axis, and the second transmission member 6 is a second transmission rod 61, one end of which is hinged to the upper engaging lug 53 about an axis M, and the other end of which is hinged to an upper end of the front leg 11 about an axis N. Therefore, when the sliding part 2 slides along the front legs 11, the sliding part 2 can drive the middle support mechanism 5 and the second transmission part 6 to more flexibly close and fold the front legs 11, so that the infant frame can be flexibly folded.

As shown in fig. 1 to 5, the push rod mechanism 7 includes a push rod 71, and the push rod 71 is rotatably connected to the middle support rod 51. In this embodiment, the push rod 71 is a pair of rods, but the push rod 71 may be a single rod rotatably connected to the middle stay 51, and the stroller can be moved by using a single rod. When the infant carriage is folded, the push rod 71 is moved toward the middle stay 51 by rotating the push rod 71 relative to the middle stay 51, and then the slider 2 is slid along the front leg 11, which is very convenient and fast to operate. Of course, the push rod 71 can also be slidably connected to the middle stay 51, and when the stroller frame is folded, the push rod 71 is retracted into the middle stay 51, and when the stroller frame is unfolded, the push rod 71 is pulled out from the middle stay 51 and rotated backward at a certain angle to form a push rod capable of pushing the stroller.

As shown in fig. 1 and 2, the push rod 71 is connected with an extension rod 72 capable of sliding relative to the push rod. The extension rod 72 can extend the push rod mechanism 7, so that the baby stroller can be pushed by a user more conveniently.

As shown in fig. 6 to 11, the sliding member 2 includes a sliding sleeve 21 sleeved on the front leg 11, a protruding lug 22 is disposed on the sliding sleeve 21, and the rear leg 31 and the lower connecting lug 51 are hinged to the protruding lug 22. In this embodiment, the sliding member 2 is sleeved on the front leg 11 by using a sliding sleeve structure, of course, the sliding member 2 may also be a sliding block structure, and the front leg 11 is provided with a sliding groove or a sliding rail for the sliding block to slide.

As shown in fig. 6 to 11, a third locking mechanism 93 is arranged between the sliding sleeve 21 and the front leg 11, a second locking mechanism 92 is arranged between the push rod 71 and the middle stay 51, a first locking mechanism 91 is arranged between the extension rod 72 and the push rod 71, when the extension rod 72 moves downwards along the push rod 71, the extension rod 72 drives the second locking mechanism 92 to unlock, and when the push rod 71 rotates relative to the middle stay 51, the push rod 71 drives the third locking mechanism 93 to unlock. Therefore, when the infant stroller frame is folded, the first latch mechanism 91 is unlocked, the extension rod 72 is pushed downwards, the extension rod 72 moves downwards to touch the second latch mechanism 92, the second latch mechanism 92 is driven to unlock, the push rod mechanism 7 can be rotated, the push rod 71 drives the third latch mechanism 93 to unlock in the rotating process of the push rod 71, the sliding piece 2 slides along the front leg 11, the infant stroller frame can be folded, the whole unlocking action is controlled in a linkage mode, and the infant stroller frame is convenient and fast to operate. Of course, the stroller frame may be locked in the unfolded position by other locking mechanisms known in the art and will not be described further herein.

As shown in fig. 6 to 11, the first locking mechanism 91 includes a first locking hole 911 disposed on the push rod 71, the extension rod 72 is provided therein with a first locking pin 912 capable of being engaged with the first locking hole 911, and a first pulling cable 913 capable of pulling the first locking pin 912 to move laterally to disengage from the first locking hole 911, the extension rod 72 is further provided therein with a first spring 914 capable of keeping the first locking pin 912 engaged with the first locking hole 911 when the infant stroller is in the unfolded state; the second locking mechanism 92 comprises a locking piece 921 rotatably connected to the lower end of the push rod 71, the locking piece 921 comprises a locking rod 9211, the lower end of the locking rod 9211 is provided with a locking hook 9212 which can be locked with a clamping position 922 at the upper end of the middle stay rod 51, the upper end of the locking rod 9211 is provided with a driving part 9213 which can be pushed by an extension rod 72 moving downwards, when the extension rod 72 pushes the driving part 9213, the locking rod 9211 rotates to enable the locking hook 9212 to be separated from the clamping position 922, and a second spring 923 which can enable the locking hook 9212 to be locked with the clamping position 922 when the infant stroller frame is unfolded is further arranged in the push rod 71; the third latch mechanism 93 includes a second latch hole 931 disposed on the front leg 11, a second latch 932 disposed in the protruding ear 22 and capable of engaging with or disengaging from the second latch hole 931, the second latch 932 is connected with a transverse block 933, a rotatable rotating sleeve 934 is disposed in a space formed by the abutting of the lower connecting ear 52 and the protruding ear 22, a special-shaped hole 935 disposed in the rotating sleeve 934 and capable of cooperating with the transverse block 933 to disengage the second latch 932 from the second latch hole 931 when the rotating sleeve 934 rotates, a third spring 936 capable of retaining the second latch 932 and the second latch 931 when the infant stroller is unfolded is further disposed in the protruding ear 22, a second cable 937 connected with the rotating sleeve 934 and capable of pulling the rotating sleeve 934 to rotate is disposed in the middle supporting rod 51, a transverse column 938 is connected to the upper end of the second cable 937, a transverse column 938 is disposed at the lower end of the push rod 71 and capable of inserting the transverse column 938 and pulling the transverse column 938 when the push rod 71 rotates And a driving groove 939 of the second cable 937. In the specific unlocking process, the first clamping pin 912 is pulled by the first guy cable 913, the first clamping pin 912 is separated from the first clamping hole 911, at this time, the extension rod 72 can be slid downwards, when the lower end of the extension rod 72 contacts the driving part 9213 of the locking piece 921, the locking piece 921 rotates, the locking hook 9212 is separated from the locking position 922 of the middle stay 51, at this time, the push rod 71 can rotate relative to the middle stay 51, during the rotation of the push rod 71, the groove wall of the driving groove 939 on the push rod 71 pushes the transverse column 938, so that the second cable 937 is pulled to move, the second cable 937 rotates with the rotating sleeve 934, the rotating sleeve 934 presses the transverse block 933 on the second bayonet 932 downwards through the hole wall of the special-shaped hole 935 on the rotating sleeve during the rotation, the second latch 932 is disengaged from the second latch hole 931 formed in the front leg 11, and the slider 2 slides relative to the front leg 11. The whole structure design is very ingenious, and the operation is also very convenient and fast.

Example 2:

as shown in fig. 12, embodiment 2 differs from embodiment 1 in that:

the push rod 71 is connected with an extension handle 73 which can rotate and fold relative to the push rod. In this embodiment, the locking structure of the stroller frame is other locking structures known in the art, and will not be described in detail herein.

Example 3:

as shown in fig. 13, embodiment 3 differs from embodiment 1 in that:

the arrangement direction of the push rod mechanism 7 is different from that of the push rod mechanism 7 in embodiment 1.

Claims

1. Infant's car frame can move from the development position to folding position, its characterized in that: the method comprises the following steps:

the front support mechanism (1), the front support mechanism (1) comprises front legs (11), and the lower ends of the front legs (11) are connected with front wheels (12);

the sliding piece (2) is arranged on the front leg (11) and can slide along the front leg (11);

the baby stroller frame comprises a rear support mechanism (3), the rear support mechanism (3) comprises a rear leg (31), the lower end of the rear leg (31) is connected with a rear wheel (32), the rear support mechanism (3) is rotatably connected with a sliding piece (2), a first transmission piece (4) connected with the rear support mechanism (3) and the front support mechanism (1) is further arranged between the rear support mechanism (3) and the front support mechanism (1), and when the baby stroller frame is folded, the sliding piece (2) slides along a front leg (11) to drive the rear support mechanism (3) and the first transmission piece (4) to be drawn together towards the front leg (11) for folding;

the middle support mechanism (5) is rotatably connected with the sliding piece (2), a second transmission piece (6) connected with the middle support mechanism (5) and the front support mechanism (1) is further arranged between the middle support mechanism (5) and the front support mechanism (1), and when the infant frame is folded, the sliding piece (2) slides along the front legs (11) to bring the middle support mechanism (5) and the second transmission piece (6) together to be close to the front legs (11) for folding;

the baby stroller frame comprises a push rod mechanism (7), wherein the push rod mechanism (7) is movably connected to a middle support mechanism (5), and when the baby stroller frame is folded, the push rod mechanism (7) is drawn to the middle support mechanism (5) and is drawn to the front legs (11) together with the middle support mechanism (5) to be folded.

2. An infant carrier according to claim 1, wherein: when the infant carriage frame is unfolded, the middle support mechanism (5) is vertically arranged.

3. An infant carrier according to claim 1 or 2, wherein: the upper end of the rear leg (31) is hinged with the sliding piece (2), the lower end of the rear leg (31) is provided with a first connecting lug (33), and the first transmission piece (4) is a first transmission rod (41) with one end hinged with the first connecting lug (33) and the other end hinged with the upper end of the front leg (11).

4. An infant carrier according to claim 3, wherein: well vaulting mechanism (5) including well vaulting pole (51) of vertical setting, well vaulting pole (51) lower extreme be equipped with down engaging lug (52), well vaulting pole (51) go up and be located engaging lug (52) top down and be equipped with engaging lug (53), lower engaging lug (52) articulated with slider (2), second driving medium (6) for one end with last engaging lug (53) articulated, the other end and preceding leg (11) upper end articulated second transfer line (61).

5. An infant carrier according to claim 4, wherein: the push rod mechanism (7) comprises a push rod (71), and the push rod (71) is rotatably connected with the middle support rod (51).

6. An infant carrier according to claim 5, wherein: the push rod (71) is connected with an extension rod (72) which can slide relative to the push rod.

7. An infant carrier according to claim 5, wherein: the push rod (71) is connected with an extension handle (73) which can rotate and fold relative to the push rod.

8. An infant carrier according to claim 4, wherein: slider (2) establish sliding sleeve (21) on preceding leg (11) including the cover, sliding sleeve (21) on be equipped with convex protruding ear (22), back leg (31) and lower engaging lug (52) articulated with protruding ear (22).

9. An infant carrier according to claim 8, wherein: push rod mechanism (7) include push rod (71), push rod (71) rotate with well vaulting pole (51) and be connected, push rod (71) on be connected with extension rod (72) that its slided relatively, sliding sleeve (21) and preceding leg (11) between be equipped with third kayser mechanism (93), push rod (71) and well vaulting pole (51) between be equipped with second kayser mechanism (92), extension rod (72) and push rod (71) between be equipped with first kayser mechanism (91), when extension rod (72) along push rod (71) downstream, extension rod (72) drive second kayser mechanism (92) unblock and push rod (71) drive third kayser mechanism (93) unblock when centering vaulting pole (51) rotates mutually in push rod (71).

10. An infant carrier according to claim 9, wherein: the first locking mechanism (91) comprises a first locking hole (911) arranged on the push rod (71), a first locking pin (912) capable of being locked with the first locking hole (911) and a first inhaul cable (913) capable of pulling the first locking pin (912) to transversely move to be separated from the first locking hole (911) are arranged in the extension rod (72), and a first spring (914) capable of keeping the first locking pin (912) and the first locking hole (911) locked when the infant carriage is unfolded is further arranged in the extension rod (72); the second locking mechanism (92) comprises a locking piece (921) which is rotatably connected to the lower end of the push rod (71), the locking piece (921) comprises a locking rod (9211), the lower end of the locking rod (9211) is provided with a locking hook (9212) which can be clamped with a clamping position (922) at the upper end of the middle support rod (51), the upper end of the locking rod (9211) is provided with a driving part (9213) which can be pushed by a downward extension rod (72), when the extension rod (72) pushes the driving part (9213), the locking rod (9211) rotates to enable the locking hook (9212) to be separated from the clamping position (922), and a second spring (923) which can enable the locking hook (9212) to be clamped with the clamping position (922) when the infant stroller frame is unfolded is arranged in the push rod (71); third latch mechanism (93) including establishing second bayonet hole (931) on foreleg (11), protruding ear (22) in be equipped with can with second bayonet hole (931) block or second bayonet pin (932) that breaks away from, second bayonet pin (932) on be connected with horizontal cross block (933), lower engaging lug (52) and protruding ear (22) dock the space that forms and be equipped with can pivoted and rotate cover (934), rotation cover (934) in be equipped with can make second bayonet pin (932) and second bayonet hole (931) break away from with cross block (933) cooperation when it rotates dysmorphism hole (935), protruding ear (22) in still be equipped with can make second bayonet pin (932) and second bayonet hole (937) that keep the block when infant's frame expandes the state, well vaulting pole (51) in wear to be equipped with and rotate cover (934) and be connected and stimulate and rotate second bayonet hole (937) that rotate cover (934), the upper end of the second inhaul cable (937) is connected with a transverse column (938), and the lower end of the push rod (71) is provided with a driving groove (939) for the transverse column (938) to insert and push the transverse column (938) to pull the second inhaul cable (937) when the push rod (71) rotates.