CN213228827U

CN213228827U - Child's bike

Info

Publication number: CN213228827U
Application number: CN202021776722.3U
Authority: CN
Inventors: 赵丹丹
Original assignee: Zhongshan Youyou Baby Products Co ltd
Current assignee: Zhongshan Youyou Baby Products Co ltd
Priority date: 2020-08-24
Filing date: 2020-08-24
Publication date: 2021-05-18
Anticipated expiration: 2030-08-24

Abstract

The utility model discloses a child's bike, including folding bottom sprag frame, bottom sprag frame includes the foreleg and rotates the back leg of being connected around first rotation axis with the foreleg, foreleg and back leg lower extreme all are connected with the wheel, bottom sprag frame upper end is connected with can drive foreleg and back leg rotation push rod assembly that draws close relatively it rotates around the second rotation axis and when rotating, bottom sprag frame upper end still is connected with the seat subassembly that has bedplate and backplate, be equipped with the support component that can support the seat subassembly when child's bike expandes state between bedplate and the bottom sprag frame, support component one end is connected around the rotation of third rotation axis with bottom sprag frame, the other end and bedplate sliding connection, still be equipped with between seat subassembly and the push rod subassembly and can drive the relative bottom sprag frame pivoted drive assembly of seat subassembly when the relative bottom sprag frame of push rod subassembly rotates. The utility model discloses simple structure, low cost, folding back is small.

Description

Child's bike

[ technical field ] A method for producing a semiconductor device

The utility model relates to a child's bike.

[ background of the invention ]

The children's vehicle is a common product in the growth process of children. Current child vehicles are generally capable of being unfolded or folded for easy carrying and storage. But the traditional connecting rod of the child car has more complex structure, higher cost and larger volume after being folded.

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 child's bike which has simple structure, low cost and small volume after being folded.

The utility model discloses a realize through following technical scheme:

a child's vehicle movable from an unfolded position to a folded position when a locking device is unlocked, characterized in that: including folding bottom sprag frame 1, bottom sprag frame 1 include preceding leg 11 and with preceding leg 11 around first rotation axis A rotation connection's back leg 12, preceding leg 11 and back leg 12 lower extreme all be connected with

wheel

13, 1 upper end of bottom sprag frame be connected with can be relatively it rotate around second rotation axis B and can drive preceding leg 11 and back leg 12 when rotating and rotate push rod assembly 2 that draws close, 1 upper end of bottom sprag frame still be connected with seat subassembly 3 that has bedplate 31 and backplate 32, bedplate 31 and bottom sprag frame 1 between be equipped with the support component 4 that can support seat subassembly 3 when buggy expandes the state, support component 4 one end and bottom sprag frame 1 rotate around third rotation axis C and be connected, the other end and bedplate 31 sliding connection, seat subassembly 3 and push rod subassembly 2 between still be equipped with and can drive the relative bottom sprag of seat subassembly 3 when push rod subassembly 2 rotates relative bottom sprag frame 1 A transmission part 5 for the rotation of the bracket 1.

The child vehicle is characterized in that: the transmission part 5 comprises a sliding sleeve 51 capable of sliding along the push rod assembly 2, a transmission rod 52 is arranged between the back plate 32 and the sliding sleeve 51, one end of the transmission rod 52 is rotatably connected with the back plate 32 around a fourth rotation axis D, and the other end of the transmission rod 52 is rotatably connected with the sliding sleeve 51 around a fifth rotation axis E.

The child vehicle is characterized in that: the back plate 32 is rotatably connected to the tappet assembly 2 about a sixth rotation axis F.

The child vehicle is characterized in that: the seat assembly 3 further comprises a front plate 33 rotatably connected to the front side of the seat plate 31 around a seventh rotation axis G, the rear side of the seat plate 31 is rotatably connected to the back plate 32 around an eighth rotation axis H, and a surrounding frame 34 rotatably connected to the upper end of the front plate 33 and the upper end of the back plate 32 is arranged between the upper end of the front plate 33 and the upper end of the back plate.

The child vehicle is characterized in that: the supporting component 4 comprises a supporting hinged seat 41 which is rotatably connected with the upper end of the bottom supporting frame 1 around the third rotation axis C, a supporting rod 42 is arranged on the supporting hinged seat 41, and one end, far away from the supporting hinged seat 41, of the supporting rod 42 is connected with the seat plate 31 in a sliding mode.

The child vehicle is characterized in that: first axis of rotation A, second axis of rotation B and third axis of rotation C coincidence, 11 upper ends of preceding leg be equipped with the articulated seat of preceding

leg

14, 12 upper ends of back leg be equipped with back leg articulated

seat

15, 2 lower extremes of push rod subassembly be equipped with the articulated seat of push rod 21, the articulated seat of preceding leg 14, back leg articulated seat 15, the articulated seat of push rod 21 and support articulated seat 41 and rotate around the first axis of rotation A, the second axis of rotation B and the third axis of rotation C of coincidence and connect.

The child vehicle is characterized in that: the push rod assembly 2 comprises a lower push rod 22 and an upper push rod 23 which can be unfolded or folded relative to the lower push rod 22, and the lower end of the lower push rod 22 is connected with the push rod hinge seat 21.

The child vehicle is characterized in that: the locking device comprises a first locking mechanism 6 arranged between an upper push rod 23 and a lower push rod 22, a second locking mechanism 7 arranged between a seat plate 31 and a supporting component 4, a third locking mechanism 8 arranged between a front leg hinging seat 14 and a push rod hinging seat 21 and a fourth locking mechanism 9 arranged between a sliding sleeve 51 and a push rod assembly 2, and when the first locking mechanism 6 is unlocked, the upper push rod 23 moves relative to the lower push rod to drive the fourth locking mechanism 9, the second locking mechanism 7 and the third locking mechanism 8 to be unlocked.

The child vehicle is characterized in that: said second locking mechanism 7 comprises a rocker 71 pivotally connected to the seat plate 31 about a ninth axis I, a support pin 72 is arranged on the support rod 42, a first chute 73 which can be used for the support pin 72 to slide in is arranged on the seat plate 31, a second sliding groove 74 for the support pin 72 to slide in is arranged on the rocker 71, a slot 75 which is communicated with the first sliding groove 73 and can accommodate the support pin 72 is arranged at the end of the second sliding groove 74, a sliding rod 76 which can slide in the push rod hinge seat 21 is arranged in the push rod hinge seat, a pushing part 77 which can push the warping plate 71 to tilt when the sliding rod 76 slides downwards so as to separate the clamping groove 75 from the supporting pin 72 is arranged on the sliding rod 76, a first return spring 78 is further arranged between the rocker 71 and the seat plate 31, and a fifth return spring 79 capable of pushing the sliding rod 76 to return is further arranged in the push rod hinged seat.

The child vehicle is characterized in that: the third locking mechanism 8 includes a first radial groove 81 disposed on the rear leg hinge base 15 and extending along the radial direction, the push rod hinge base 21 is provided with a first arc groove 82 along the circumferential direction and a first engaging groove 83 communicated with the first arc groove 82 and extending along the radial direction, the front leg hinge base 14 is provided with a second arc groove 84 along the circumferential direction and a second engaging groove 85 communicated with the second arc groove 84 and extending along the radial direction, the first radial groove 81 is provided with an engaging column 86 transversely passing through the first engaging groove 83 and the second engaging groove 85, a second return spring 87 is disposed between the engaging column 86 and the rear leg hinge base 15, when the sliding rod 76 slides downwards, the sliding rod 76 pushes the engaging column 86 to make the engaging column 86 enter the first arc groove 82 and the second arc groove 84, the rear leg hinge base 15 is further provided with a second radial groove 8a, the articulated seat 21 of push rod on still be equipped with third arc wall 8b, the articulated seat 14 of preceding leg on still be equipped with fourth arc wall 8c, the articulated seat 8a of second radial slot, third arc wall 8b and fourth arc wall 8c enclose into drive shaft channel 8d, drive shaft channel 8d in wear to be equipped with and to promote the articulated seat 14 of preceding leg and make preceding leg 11 rotate the drive shaft 8e that draws close to back leg 12 when push rod assembly 2 rotates relatively back leg 12.

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

1. the utility model discloses the perambulator is when folding, and the relative bottom sprag frame of push rod subassembly rotates and the in-process of drawing close makes preceding leg and back leg rotate and draws close, and at this in-process, drive disk assembly draws the seat subassembly to draw close and make the relative bottom sprag frame of support component one end rotate to the back leg, and the relative bedplate of the other end slides to make support component and bedplate draw close together, finally realize the folding of perambulator. Whole perambulator simple structure is compact, and the connecting rod part is few, and low cost only needs to rotate push rod assembly and just can realize that whole perambulator linkage is folding when folding, and folding back is small moreover, is convenient for deposit and carry.

2. The utility model discloses a drive disk assembly is equipped with the transfer line including the sliding sleeve that can slide along push rod assembly between backplate and the sliding sleeve, and transfer line one end is connected around fourth rotation axis rotation with the backplate, and the other end rotates around fifth rotation axis with the sliding sleeve and is connected. When the child's bike is folded, when the relative bottom sprag frame of push rod assembly rotates, the push rod assembly lateral wall cooperates with the inner lateral wall of the sliding sleeve, so that the sliding sleeve can slide along the push rod assembly, the backboard is pulled through the transmission rod in the sliding process, the seat assembly and the push rod assembly are drawn close to the rear leg together, the folding operation of the whole child's bike is realized, and the folding operation is very convenient and fast.

3. The utility model discloses a backplate rotates around sixth rotation axis with push rod assembly and is connected. The backplate and push rod subassembly have certain contained angle when the perambulator is unfolding the state, because the backplate rotates with the push rod subassembly to be connected, so when the perambulator is folding, can be so that the relative push rod subassembly of backplate rotates and more be close to the push rod subassembly to make the children's shallow fold very little.

4. The utility model discloses simple structure is compact, folding convenient operation, and folding back is small, is fit for popularizing and applying.

[ description of the drawings ]

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

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

fig. 3 is a side view of the present invention during folding;

fig. 4 is a side view of the present invention in a folded state;

FIG. 5 is one of the perspective views of the components of the present invention;

fig. 6 is one of exploded views of components of the present invention;

fig. 7 is one of the cross-sectional views of a component of the present invention;

FIG. 8 is an enlarged view at J of FIG. 7;

fig. 9 is a second exploded view of the components of the present invention;

fig. 10 is a second perspective view of components of the present invention;

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

figure 12 is a second cross-sectional view of the components of the utility model;

fig. 13 is a third sectional view of the components of the present invention.

[ detailed description ] embodiments

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

as shown in fig. 1 to 4, a child vehicle which can move from an unfolding position to a folding position when a locking device is unlocked comprises a foldable bottom support frame 1, wherein the bottom support frame 1 comprises a front leg 11 and a rear leg 12 rotatably connected with the front leg 11 around a first rotation axis a, the lower ends of the front leg 11 and the rear leg 12 are both connected with wheels 13, the upper end of the bottom support frame 1 is connected with a push rod assembly 2 which can rotate around a second rotation axis B relative to the bottom support frame and can drive the front leg 11 and the rear leg 12 to rotate and close together when rotating, the upper end of the bottom support frame 1 is also connected with a seat assembly 3 provided with a seat plate 31 and a back plate 32, a supporting component 4 which can support the seat assembly 3 when the child vehicle is unfolded is arranged between the seat plate 31 and the bottom support frame 1, one end of the supporting component 4 is rotatably connected with the bottom support frame 1 around a third rotation axis C, the other end is connected with the seat board 31 in a sliding way, and a transmission part 5 which can drive the seat component 3 to rotate relative to the bottom support frame 1 when the push rod component 2 rotates relative to the bottom support frame 1 is arranged between the seat component 3 and the push rod component 2. When the perambulator is folding, push rod assembly 2 rotates and the in-process of drawing close relative bottom support frame 1 makes foreleg 11 and back leg 12 rotate and draw close, and at this in-process, drive disk assembly 5 draws seat subassembly 2 to draw close to back leg 12 and makes 4 one ends of support component 1 of bottom support frame rotate relatively, and the other end slides relative bedplate 31 to make support component 4 draw close together with bedplate 31, finally realize the folding of perambulator. The supporting component 4 not only plays a role of supporting the seat component 3 in the unfolded state of the baby carriage, but also links with the seat plate 31 when the baby carriage is folded, and the whole structural design is ingenious. Consequently, whole perambulator simple structure is compact, and the connecting rod part is few, and low cost only needs to rotate push rod assembly 2 and just can realize that whole perambulator linkage is folding when folding, and folding back is small, is convenient for deposit and carry, operates also very convenient and fast.

As shown in fig. 3, 6 and 8, the transmission member 5 includes a sliding sleeve 51 capable of sliding along the push rod assembly 2, a transmission rod 52 is disposed between the back plate 32 and the sliding sleeve 51, one end of the transmission rod 52 is rotatably connected to the back plate 32 around a fourth rotation axis D, and the other end is rotatably connected to the sliding sleeve 51 around a fifth rotation axis E. When the perambulator was folding, when push rod assembly 2 rotated for bottom sprag frame 1, push rod assembly 2 lateral wall and the cooperation of sliding sleeve 51 inside wall to make sliding sleeve 51 can slide along push rod assembly 2, pass through transfer line 52 pulling backplate 32 at gliding in-process, thereby make seat subassembly 3 and push rod assembly 2 draw close to back leg 12 together, thereby realize that whole perambulator is folding, folding operation convenience and fast very.

As shown in fig. 2 to 4 and fig. 6, the back plate 32 is rotatably connected to the push rod assembly 2 about a sixth rotation axis F. The backplate 32 has certain contained angle with push rod assembly 2 when the perambulator is at the expansion state, because backplate 32 rotates with push rod assembly 2 and is connected, so when the perambulator is folding, can be so that backplate 32 rotates and is closer to push rod assembly 2 relatively push rod assembly 2 to make the children's shallow fold very little. Moreover, the folding child car can be smoothly and flexibly folded.

As shown in fig. 1 to 3, the seat assembly 3 further includes a front plate 33 rotatably connected to the front side of the seat plate 31 about a seventh rotation axis G, the rear side of the seat plate 31 is rotatably connected to the back plate 32 about an eighth rotation axis H, and a surrounding frame 34 rotatably connected to the upper end of the front plate 33 and the upper end of the back plate 32 is disposed therebetween. When the folding seat is folded, the push rod assembly 2 rotates downwards, the sliding sleeve 51 slides on the push rod assembly 2, the transmission rod 52 pulls the back plate 32, the back plate 32 rotates relative to the push rod assembly 2, the surrounding frame 34, the front plate 33, the seat plate 31 and the back plate 32 rotate relatively and are folded, the seat assembly 3 approaches the push rod assembly 2, the seat plate 32 is in sliding fit with the supporting component 4 in the process, the supporting component 4 also rotates relative to the bottom support frame 1, and finally the components rotate relatively and are folded.

As shown in fig. 2, 3 and 6, the supporting member 4 includes a supporting hinge seat 41 rotatably connected to the upper end of the bottom bracket 1 around the third rotation axis C, a supporting rod 42 is disposed on the supporting hinge seat 41, and one end of the supporting rod 42 away from the supporting hinge seat 41 is slidably connected to the seat plate 31.

As shown in fig. 1, 2, 10 and 11, the first rotation axis a, the second rotation axis B and the third rotation axis C are coincident, the upper end of the front leg 11 is provided with a front leg hinge seat 14, the upper end of the rear leg 12 is provided with a rear leg hinge seat 15, the lower end of the push rod assembly 2 is provided with a push rod hinge seat 21, and the front leg hinge seat 14, the rear leg hinge seat 15, the push rod hinge seat 21 and the support hinge seat 41 are rotatably connected around the coincident first rotation axis a, the second rotation axis B and the third rotation axis C. Therefore, the whole baby carriage is simple and compact in structure and flexible to fold.

As shown in fig. 1, the push rod assembly 2 includes a lower push rod 22 and an upper push rod 23 capable of being unfolded or folded relative to the lower push rod 22, and the lower end of the lower push rod 22 is connected to the push rod hinge seat 21. In the present embodiment, the upper push rod 23 is slidably disposed in the lower push rod 22, but the upper push rod 23 may also be rotatably connected to the lower push rod 22.

As shown in fig. 7 to 13, the locking device includes a first locking mechanism 6 disposed between the upper push rod 23 and the lower push rod 22, a second locking mechanism 7 disposed between the seat plate 31 and the support member 4, a third locking mechanism 8 disposed between the front leg hinge seat 14 and the push rod hinge seat 21, and a fourth locking mechanism 9 disposed between the sliding sleeve 51 and the push rod assembly 2, and when the first locking mechanism 6 is unlocked, the upper push rod 23 moves relative to the lower push rod to drive the fourth locking mechanism 9, the second locking mechanism 7, and the third locking mechanism 8 to be unlocked. When the child car is folded, the first locking mechanism 6 is operated to unlock, then the upper push rod 23 slides in the lower push rod 22, and the upper push rod 23 drives the second locking mechanism 7, the third locking mechanism 8 and the fourth locking mechanism 9 to unlock in the sliding process, so that the whole child car can be unlocked only by pushing the upper push rod 23 downwards, and the operation is very convenient. The first locking mechanism 6 may be a conventional locking structure, and will not be described in detail.

As shown in fig. 8 and 9, the fourth locking mechanism 9 includes a locking groove 91 formed on the push rod hinge seat 21, the sliding sleeve 51 is provided with an insertion portion 92 inserted into the locking groove 91, the sliding sleeve 51 and the push rod hinge seat 21 are further provided with a locking block 93 capable of moving transversely, the locking block 93 is provided with a blocking portion 94 capable of preventing the insertion portion 92 from moving upwards when the child car is in the unfolded state, the locking block 93 is further provided with a recess groove 95 capable of providing a space for the insertion portion 92 to move upwards when the child car is folded, a third spring 96 in a compressed state when the child car is in the unfolded state is further arranged between the insertion portion 92 and the push rod hinge seat 21, and the push rod hinge seat 21 is further provided with a fourth return spring 97 capable of returning the locking block 93. After the first locking mechanism 6 is unlocked, the upper push rod 23 slides downwards, the upper push rod 23 pushes the locking block 93 to slide transversely, the blocking portion 94 does not abut against the insertion portion 92 any more when the locking block 93 moves transversely, the abdicating groove 95 is aligned with the insertion portion 92, the third return spring 96 which is originally compressed pushes the insertion portion 92 upwards, the sliding sleeve 51 slides upwards along the push rod assembly 2, the effect of assisting in the initial stage of the folding process of the seat assembly 3 is achieved, and the child car is folded more smoothly. The locking piece 93 is provided with an inclined surface, so that the upper push rod 23 can push the locking piece 93 to move transversely when moving up and down.

As shown in fig. 2, 6 and 8, the second locking mechanism 7 includes a rocker 71 rotatably connected to the seat plate 31 about a ninth axis I, a support pin 72 is arranged on the support rod 42, a first chute 73 which can be used for the support pin 72 to slide in is arranged on the seat plate 31, a second sliding groove 74 for the support pin 72 to slide in is arranged on the rocker 71, a slot 75 which is communicated with the first sliding groove 73 and can accommodate the support pin 72 is arranged at the end of the second sliding groove 74, a sliding rod 76 which can slide in the push rod hinge seat 21 is arranged in the push rod hinge seat, a pushing part 77 which can push the warping plate 71 to tilt when the sliding rod 76 slides downwards so as to separate the clamping groove 75 from the supporting pin 72 is arranged on the sliding rod 76, a first return spring 78 is further arranged between the rocker 71 and the seat plate 31, and a fifth return spring 79 capable of pushing the sliding rod 76 to return is further arranged in the push rod hinged seat. After the first locking mechanism 6 is unlocked, the upper push rod 23 is pushed downward, the lower end of the upper push rod 23 pushes the sliding rod 76 to slide downward, the pushing portion 77 on the sliding rod 76 touches the rear end of the rocker 71 and lifts the rear end of the rocker 71, so that the rocker 71 rotates relative to the seat plate 31 about the ninth rotation axis I, the supporting pin 72 disengages from the slot 75 during the rotation, the supporting pin 72 enters the second sliding slot 74, and the second locking mechanism 7 is unlocked.

As shown in fig. 8, 11 to 13, the third locking mechanism 8 includes a first radial groove 81 provided in the rear leg hinge base 15 and extending in a radial direction, the push rod hinge base 21 is provided with a first arc-shaped groove 82 in a circumferential direction and a first engaging groove 83 communicating with the first arc-shaped groove 82 in the radial direction, the front leg hinge base 14 is provided with a second arc-shaped groove 84 in the circumferential direction and a second engaging groove 85 communicating with the second arc-shaped groove 84 in the radial direction, the first radial groove 81 is provided with an engaging post 86 passing through the first engaging groove 83 and the second engaging groove 85 in the lateral direction, a second return spring 87 is provided between the engaging post 86 and the rear leg hinge base 15, when the sliding rod 76 slides downward, the sliding rod 76 pushes the engaging post 86 to make the engaging post 86 enter the first arc-shaped groove 82 and the second arc-shaped groove 84, the rear leg hinge base 15 is further provided with a second radial groove 8a, the articulated seat 21 of push rod on still be equipped with third arc wall 8b, the articulated seat 14 of preceding leg on still be equipped with fourth arc wall 8c, the articulated seat 8a of second radial slot, third arc wall 8b and fourth arc wall 8c enclose into drive shaft channel 8d, drive shaft channel 8d in wear to be equipped with and to promote the articulated seat 14 of preceding leg and make preceding leg 11 rotate the drive shaft 8e that draws close to back leg 12 when push rod assembly 2 rotates relatively back leg 12. When the upper push rod 23 pushes the second locking mechanism 7 downwards to unlock, the sliding rod 76 also pushes the engaging column 86 out of the first engaging groove 83 and the second engaging groove 85 into the first arc-shaped groove 82 and the second arc-shaped groove 84, at this time, the push rod hinge seat 21, the front leg hinge seat 14 and the rear leg hinge seat 15 are unlocked, when the push rod hinge seat 21 rotates relative to the rear leg hinge seat 15, the groove wall of the third arc-shaped groove 8b on the push rod hinge seat 21 pushes the driving shaft 8e in the driving shaft channel 8d, and the driving shaft 8e pushes the groove wall of the fourth arc-shaped groove 8c on the front leg hinge seat 14, so as to push the front leg hinge seat 14 to rotate relative to the rear leg hinge seat 15, so that the front leg 11 and the rear leg 12 rotate and approach each other, and in this process, the seat assembly 2 is folded, and the support member 4 slides relative to the seat plate 31, and finally the whole vehicle is folded.

Therefore, the utility model discloses perambulator simple structure is compact, and design benefit when folding, only needs push rod 23 downstream, just with fourth locking mechanical system 9, second locking mechanical system 7 and the 8 unblocks of third locking mechanical system, realizes the unblock with whole perambulator, operates convenient and fast very.

Claims

1. A child's vehicle movable from an unfolded position to a folded position when a locking device is unlocked, characterized in that: including folding bottom sprag frame (1), bottom sprag frame (1) include preceding leg (11) and with preceding leg (11) around first rotation axis (A) rotation connection's back leg (12), preceding leg (11) and back leg (12) lower extreme all be connected with wheel (13), bottom sprag frame (1) upper end be connected with can relative it rotate around second rotation axis (B) and can drive push rod assembly (2) that preceding leg (11) and back leg (12) rotate and draw close when rotating, bottom sprag frame (1) upper end still be connected with seat subassembly (3) that have bedplate (31) and backplate (32), bedplate (31) and bottom sprag frame (1) between be equipped with supporting component (4) that can support seat subassembly (3) when the perambulator expandes the state, supporting component (4) one end and bottom sprag frame (1) rotate around third rotation axis (C) and be connected, the other end is connected with the seat board (31) in a sliding way, and a transmission part (5) which can drive the seat component (3) to rotate relative to the bottom support frame (1) when the push rod component (2) rotates relative to the bottom support frame (1) is also arranged between the seat component (3) and the push rod component (2).

2. The child's vehicle of claim 1, wherein: the transmission part (5) comprises a sliding sleeve (51) capable of sliding along the push rod assembly (2), a transmission rod (52) is arranged between the back plate (32) and the sliding sleeve (51), one end of the transmission rod (52) is rotatably connected with the back plate (32) around a fourth rotation axis (D), and the other end of the transmission rod is rotatably connected with the sliding sleeve (51) around a fifth rotation axis (E).

3. Child's vehicle according to claim 2, characterized in that: the back plate (32) is connected with the push rod assembly (2) in a rotating mode around a sixth rotating axis (F).

4. The child's vehicle of claim 1, wherein: the seat assembly (3) further comprises a front plate (33) which is rotatably connected to the front side of the seat plate (31) around a seventh rotation axis (G), the rear side of the seat plate (31) is rotatably connected with the back plate (32) around an eighth rotation axis (H), and a surrounding frame (34) which is rotatably connected with the upper end of the front plate (33) and the upper end of the back plate (32) is arranged between the upper end of the front plate (33) and the upper end of the back plate (32).

5. Child's vehicle according to claim 2, characterized in that: support component (4) including with bottom sprag frame (1) upper end around the articulated seat of support (41) of being connected is rotated to third axis of rotation (C), the articulated seat of support (41) on be equipped with bracing piece (42), bracing piece (42) on keep away from one end and bedplate (31) sliding connection that support articulated seat (41).

6. Child's vehicle according to claim 5, characterized in that: first axis of rotation (A), second axis of rotation (B) and third axis of rotation (C) coincidence, preceding leg (11) upper end be equipped with the articulated seat of preceding leg (14), back leg (12) upper end be equipped with back leg articulated seat (15), push rod subassembly (2) lower extreme be equipped with the articulated seat of push rod (21), the articulated seat of preceding leg (14), back leg articulated seat (15), the articulated seat of push rod (21) and support articulated seat (41) and rotate around the first axis of rotation (A), second axis of rotation (B) and third axis of rotation (C) of coincidence and connect.

7. Child's vehicle according to claim 6, characterized in that: push rod subassembly (2) include push down pole (22) and can launch or folding last push rod (23) relatively push down pole (22), push down pole (22) lower extreme connect the articulated seat of push rod (21).

8. The child's vehicle of claim 7, wherein: the locking device comprises a first locking mechanism (6) arranged between an upper push rod (23) and a lower push rod (22), a second locking mechanism (7) arranged between a seat plate (31) and a supporting component (4), a third locking mechanism (8) arranged between a front leg hinging seat (14) and a push rod hinging seat (21) and a fourth locking mechanism (9) arranged between a sliding sleeve (51) and a push rod assembly (2), and when the first locking mechanism (6) is unlocked, the upper push rod (23) moves relative to the lower push rod () to drive the fourth locking mechanism (9), the second locking mechanism (7) and the third locking mechanism (8) to unlock.

9. The child's vehicle of claim 8, wherein: the second locking mechanism (7) comprises a warping plate (71) rotatably connected with the seat plate (31) around a ninth axis (I), a support pin (72) is arranged on the support rod (42), a first sliding groove (73) capable of allowing the support pin (72) to slide in is arranged on the seat plate (31), a second sliding groove (74) capable of allowing the support pin (72) to slide in is arranged on the warping plate (71), a clamping groove (75) communicated with the first sliding groove (73) and capable of accommodating the support pin (72) is arranged at the end part of the second sliding groove (74), a sliding rod (76) capable of sliding in is arranged in the push rod hinged seat (21), a pushing part (77) capable of pushing the warping plate (71) to warp when the sliding rod (76) slides downwards to enable the clamping groove (75) to be separated from the support pin (72) is arranged on the sliding rod (76), and a first return spring (78) is further arranged between the warping plate (71) and the seat plate (31), and a fifth return spring (79) capable of pushing the sliding rod (76) to return is further arranged in the push rod hinge seat (21).

10. The child's vehicle of claim 9, wherein: the third locking mechanism (8) comprises a first radial groove (81) which is arranged on the rear leg hinged seat (15) and extends along the radial direction, a first arc-shaped groove (82) along the circumferential direction and a first clamping groove (83) which is communicated with the first arc-shaped groove (82) and extends along the radial direction are arranged on the push rod hinged seat (21), a second arc-shaped groove (84) along the circumferential direction and a second clamping groove (85) which is communicated with the second arc-shaped groove (84) and extends along the radial direction are arranged on the front leg hinged seat (14), a clamping column (86) transversely penetrating through the first clamping groove (83) and the second clamping groove (85) is arranged in the first radial groove (81), a second return spring (87) is arranged between the clamping column (86) and the rear leg hinged seat (15), and when the sliding rod (76) slides downwards, the sliding rod (76) pushes the clamping column (86) to enable the clamping column (86) to enter the first arc-shaped groove (82) and the second arc-shaped groove (84), rear leg articulated seat (15) on still be equipped with second radial groove (8a), push rod articulated seat (21) on still be equipped with third arc wall (8b), preceding leg articulated seat (14) on still be equipped with fourth arc wall (8c), second radial groove (8a), third arc wall (8b) and fourth arc wall (8c) enclose into drive shaft passageway (8d), drive shaft passageway (8d) in wear to be equipped with and can promote preceding leg articulated seat (14) and make preceding leg (11) rotate drive shaft (8e) that draw close to rear leg (12) when push rod assembly (2) relative rear leg (12) rotate.