CN220465599U - Child's bike - Google Patents

Abstract

The utility model discloses a baby carrier which can move from an unfolding position to a folding position after a locking device is unlocked, and comprises front legs, wherein the lower ends of the front legs are connected with front wheels, the front legs are connected with rear legs which can rotate around a first axis A relative to the front legs, the lower ends of the rear legs are connected with rear wheels, the front legs are also connected with stay bars which can rotate around a second axis B relative to the front legs, the front legs are connected with seat assemblies which can rotate and unfold or fold relative to the front legs about a third axis C, and linkage devices which can enable the seat assemblies and the rear legs to fold and close to the front legs after the locking device is released are arranged among the seat assemblies, the front legs and the rear legs. The utility model aims to overcome the defects of the prior art and provide the baby carrier which is convenient to fold and unfold, simple in folding structure and small in volume after folding.

Description

Child's bike

[ field of technology ]

The present utility model relates to a child's vehicle.

[ background Art ]

At present, the child cart has become an indispensable article for the child in the growth process. The children's barrow on the market can be folded or unfolded generally, but the existing children's barrow is complex in transmission structure, more in connecting rods and larger in volume after folding. Therefore, a child stroller with a simple structure and a small size after folding is very desirable.

The utility model further provides a novel embodiment.

[ utility model ]

The utility model aims to overcome the defects of the prior art and provide the baby carrier which is convenient to fold and unfold, simple in folding structure and small in volume after folding.

The utility model is realized by the following technical scheme:

the utility model provides a child's bike, can remove to folding position from the expansion position after unlocking locking device, includes front leg 11, front leg 11 lower extreme be connected with front wheel 111, front leg 11 on be connected with can be relative its around first axis A pivoted back leg 12, back leg 12 lower extreme be connected with rear wheel 121, front leg 11 on still be connected with can be relative its around second axis B pivoted stay 13, front leg 11 on be connected with can be relative its pivoted seat subassembly 14 of expansion or folding around third axis C, seat subassembly 14, front leg 11 and back leg 12 between be equipped with can make seat subassembly 14 and back leg 12 fold the aggregate unit 2 of drawing close to front leg 11 after locking device releases.

The linkage device 2 comprises a sliding piece 21 which is connected to the front leg 11 in a sliding way, a folding component 22 which can be unfolded or folded in a rotating way relative to the sliding piece 21 is connected to the sliding piece 21, one end of the folding component 22 is connected to the seat component 14, the other end of the folding component 22 is connected to the rear leg 12, and the folding component 22 can drive the rear leg 12 or the seat component 14 to rotate and fold towards the front leg 11 when the seat component 14 or the rear leg 12 rotates and folds relative to the front leg 11.

The folding assembly 22 comprises a first linkage folding rod 221 rotatably connected between the sliding member 21 and the seat assembly 14, one end of the first linkage folding rod 221 is rotatably connected to the seat assembly 14 around a fourth axis D, the other end of the first linkage folding rod 221 is rotatably connected to the sliding member 21 around a fifth axis E, the folding assembly 22 further comprises a second linkage folding rod 222 rotatably connected between the sliding member 21 and the rear leg 12, one end of the second linkage folding rod 222 is rotatably connected to the sliding member 21 around a sixth axis F, and the other end of the second linkage folding rod 222 is rotatably connected to the rear leg 12 around a seventh axis G. .

The first linkage folding bar 221 and the second linkage folding bar 222 are arc-shaped.

The front leg 11 comprises a front leg rod 112, the lower end of the front leg rod 112 is connected with a front wheel 111, the upper end of the front leg rod 112 is connected with a connecting seat 113, the rear leg 12 is rotationally connected to the connecting seat 113 around a first axis A, the stay rod 13 is rotationally connected to the connecting seat 113 around a second axis B, and the sliding piece 21 is slidingly connected to the front leg rod 112.

The connecting seat 113 is provided with a handle 114 which can rotate relative to the connecting seat.

The locking device comprises a locking assembly 3 arranged between a front leg 11 and a supporting rod 13, wherein a locking position 31 is arranged on the supporting rod 13, a locking piece 32 which can slide relative to the front leg 11 and be clamped in or separated from the locking position 31 is arranged in the front leg 11, a push rod 15 which can slide relative to the supporting rod 13 is also arranged in the supporting rod 13, a pushing part 151 which can slide along the push rod 15 to push the locking piece 32 to separate from the locking position 31 is arranged on the push rod 15, an elastic reset piece 33 which can push the locking piece 32 to reset is arranged between the locking piece 32 and the front leg 11, and a pushing protrusion 131 which can push the locking piece 32 to keep the locking piece 32 separated from the locking position 31 when the supporting rod 13 is folded relative to the front leg 11 is arranged on the supporting rod 13.

The locking assembly 4 capable of locking the sliding piece 21, the front leg 11 and the locking piece 32 is arranged between the sliding piece 21 and the locking piece 32, the locking assembly 4 comprises a locking position 41 arranged on the sliding piece 21, a first sliding seat 42 capable of extending into the locking piece 32 is arranged in the front leg 11, a locking piece 43 capable of sliding relatively to the first sliding seat 42 to be clamped into or separated from the locking position 41 is arranged on the first sliding seat 42, a locking hole 321 capable of accommodating the end part of the first sliding seat 42 is arranged on the locking piece 32, an abutting surface 322 capable of pushing the first sliding seat 42 to slide when the locking piece 32 slides and is arranged in the locking hole 321, a first elastic element 44 capable of pushing the first sliding seat 42 to reset is arranged between the first sliding seat 42 and the front leg 11, and a second elastic element 45 capable of pushing the locking piece 43 to reset is arranged between the locking piece 43 and the front leg 11.

The push rod 15 and the supporting rod 13 between be equipped with the kayser subassembly 5 that can lock the two, the kayser subassembly including locating the kayser position 51 on the supporting rod 13, push rod 15 on be equipped with the second sliding seat 52 that can vertically slide rather than, second sliding seat 52 in-connection have can relative its horizontal slip and block or break away from the kayser position 51's kayser piece 53, push rod 15 on be equipped with the operation button 54, operation button 54 and second sliding seat 52 between be equipped with connecting rod 55, kayser piece 53 and push rod 15 between be equipped with the first elastic component 56 that can push up kayser piece 53 and reset, second sliding seat 52 and connecting rod 55 between be equipped with the third elastic component 57 that can push up second sliding seat 52 and reset, operation button 54 and connecting rod 55 between be equipped with the third elastic component 58, connecting rod 55 upper end still be equipped with can with the wall contact and prevent the second way lock piece 61 of connecting rod 55 that slides, second way lock piece 61 on be equipped with the protrusion to the connecting rod 55 outside 611, second lock piece 61 and fourth elastic component that can make between connecting rod 55 and the wall surface contact.

The supporting rod 13 is connected with a sliding block 71 which can slide relatively to the supporting rod 13 and is contacted with the outer wall surface 150 of the pushing rod 15, the sliding block 71 is provided with an abutting wall 711 which can be matched with the outer wall surface 150 of the pushing rod 15, the supporting rod 13 is also connected with a spanner 72 which can rotate relatively to the supporting rod, and the spanner 72 is provided with an abutting part 721 which can abut against the sliding block 71 when the spanner rotates to a preset position so that the abutting wall 711 and the outer wall surface 150 are contacted and abutted.

Compared with the prior art, the utility model has the following advantages:

1. when the child car needs to be folded, the locking device is firstly used for unlocking, then the stay bar is pushed to rotate around the second axis B relative to the front leg and to be close to the front leg, and when the stay bar is contacted with the seat component and pushes the seat component to rotate around the third axis C to be close to the front leg, the rear leg is driven by the linkage device to rotate like the front leg to be close to the front leg, and when the stay bar, the seat component and the front leg are close to the rear leg and the front leg are close to the front leg, the whole child car is folded, the folding operation is very simple, and the occupied volume after folding is minimum.

2. When the seat assembly is propped against the stay bar, the seat assembly rotates around the third axis C relative to the front leg, at the moment, one end of the folding assembly is propped against the top to push the sliding piece to slide along the front leg, and when the sliding piece slides, the other end of the folding assembly pulls the rear leg to rotate around the first axis A like the front leg to be close.

3. When the seat assembly is propped by the stay bar, the seat assembly rotates around a third axis C relative to the front leg, at the moment, one end of the first linkage folding rod rotates around the third axis C relative to the seat assembly, the other end of the first linkage folding rod pushes the sliding piece to slide and rotates around a fourth axis D relative to the sliding piece, when the sliding piece slides along the front leg, the sliding piece drives one end of the second linkage folding rod to rotate around a fifth axis E, at the moment, the second linkage folding rod and the first linkage folding rod are mutually close, the other end of the first linkage folding rod rotates around a sixth axis F relative to the rear leg, and at the moment, the folding assembly and the rear leg are mutually close to the front leg.

4. When the child needs to be folded, the locking device is unlocked firstly, then the stay bar is pushed to rotate around the second axis B relative to the connecting seat until the stay bar is attached to the seat assembly, the handle is lifted, at the moment, the rear leg is suspended, the stay bar and the seat assembly rotate relative to the front leg and are close to each other under the action of dead weight, the rear leg is driven to be close to each other and folded under the cooperation of the sliding part, the first linkage folding bar and the second linkage folding bar, the folding operation is very simple, only the stay bar is pushed to rotate in the front leg direction after the locking device is unlocked, then the handle is lifted upwards when the stay bar is pushed to be attached to the seat assembly, and the child car realizes automatic folding under the self weight of the stay bar and the seat assembly and the cooperation of the sliding part, the first linkage folding bar and the second linkage folding bar, and is more convenient to fold.

[ description of the drawings ]

FIG. 1 is one of the perspective views of a child's vehicle of the present utility model;

FIG. 2 is a second perspective view of the child's vehicle of the present utility model;

FIG. 3 is a third perspective view of the child car of the present utility model;

FIG. 4 is a side view of the child's vehicle of the present utility model;

FIG. 5 is a cross-sectional view of the child's vehicle of the present utility model;

FIG. 6 is an enlarged view of region H of FIG. 5;

FIG. 7 is an enlarged view of a portion of the child's vehicle of the present utility model;

FIG. 8 is a perspective view of the latch assembly in the child's vehicle of the present utility model;

FIG. 9 is an exploded view of the latch assembly of the child's vehicle of the present utility model;

FIG. 10 is an enlarged view of area I of FIG. 5;

FIG. 11 is a cross-sectional view of the latch assembly in the child's vehicle of the present utility model;

FIG. 12 is an enlarged view of the J area of FIG. 5;

FIG. 13 is an enlarged view of region K of FIG. 5;

FIG. 14 is a perspective view of a slider in the child's vehicle of the present utility model;

FIG. 15 is a perspective view of a wrench in the child's vehicle of the present utility model;

FIG. 16 is a state diagram of the child car of the present utility model when folded in half;

fig. 17 is a state diagram of the child car of the present utility model when folded.

[ detailed description ] of the utility model

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

as shown in fig. 1 to 17, the utility model provides a baby carrier capable of moving from an unfolding position to a folding position after unlocking a locking device, comprising a front leg 11, wherein the lower end of the front leg 11 is connected with a front wheel 111, the front leg 11 is connected with a rear leg 12 capable of rotating around a first axis a relative to the front leg, the lower end of the rear leg 12 is connected with a rear wheel 121, the front leg 11 is also connected with a supporting rod 13 capable of rotating around a second axis B relative to the front leg 11, the front leg 11 is connected with a seat assembly 14 capable of rotating and unfolding or folding relative to the front leg about a third axis C, and a linkage device 2 capable of folding the seat assembly 14 and the rear leg 12 towards the front leg 11 after unlocking the locking device is arranged among the seat assembly 14, the front leg 11 and the rear leg 12.

When the child needs to be folded, the locking device is firstly unlocked, then the stay bar 13 is pushed to rotate around the second axis B relative to the front leg 11 and to be close to the front leg 11, and when the stay bar 13 is contacted with the seat component 14 and pushes the seat component 14 to rotate around the third axis C towards the front leg 11, the rear leg 12 is driven by the linkage device 2 to rotate like the front leg 11 to be close, and when the stay bar 13, the seat component 14 and the front leg 11 are close to each other and the rear leg 12 and the front leg 11 are close to each other, the whole child car is folded, the folding operation is very simple, and the occupied volume after folding is minimum.

As shown in fig. 3, 4 and 7, the linkage 2 includes a sliding member 21 slidably connected to the front leg 11, a folding assembly 22 capable of being unfolded or folded relative to the sliding member 21 is connected to the sliding member 21, one end of the folding assembly 22 is connected to the seat assembly 14, the other end of the folding assembly 22 is connected to the rear leg 12, and the folding assembly 22 can drive the rear leg 12 or the seat assembly 14 to be folded toward the front leg 11 when the seat assembly 14 or the rear leg 12 is folded relative to the front leg 11. When the seat assembly 14 is propped against the stay bar 13, the seat assembly 14 rotates around the third axis C relative to the front leg 11, and at the moment, one end of the folding assembly 22 is propped against the front leg 11 to push the sliding piece 21 to slide along the front leg 11, and when the sliding piece 21 slides, the other end of the folding assembly 22 pulls the rear leg 12 to rotate around the first axis A like the front leg 11 to be close.

As shown in fig. 3, 4 and 7, the folding assembly 22 includes a first linkage folding bar 221 rotatably connected between the slider 21 and the seat assembly 14, one end of the first linkage folding bar 221 is rotatably connected to the seat assembly 14 around a third axis C, the other end of the first linkage folding bar 221 is rotatably connected to the slider 21 around a fourth axis D, the folding assembly 22 further includes a second linkage folding bar 222 rotatably connected between the slider 21 and the rear leg 12, one end of the second linkage folding bar 222 is rotatably connected to the slider 21 around a fifth axis E, and the other end of the second linkage folding bar 222 is rotatably connected to the rear leg 12 around a sixth axis F. When the seat assembly 14 is propped against the stay bar 13, the seat assembly 14 rotates around the third axis C relative to the front leg 11, at this time, one end of the first linkage folding bar 221 rotates around the third axis C relative to the seat assembly 14, the other end of the first linkage folding bar 221 pushes the sliding piece 21 to slide and rotate around the fourth axis D relative to the sliding piece 21, and when the sliding piece 21 slides along the front leg 11, the sliding piece 21 drives one end of the second linkage folding bar 222 to rotate around the fifth axis E, at this time, the second linkage folding bar 222 and the first linkage folding bar 221 are close to each other, and the other end of the first linkage folding bar 221 rotates around the sixth axis F relative to the rear leg 12, at this time, the folding assembly 22 and the rear leg 12 are close to the front leg 11.

As shown in fig. 3, 4 and 7, the first linkage folding bar 221 and the second linkage folding bar 222 are arc-shaped, so as to facilitate rotation and pressure application.

As shown in fig. 3, the front leg 11 includes a front leg bar 112, a front wheel 111 is connected to a lower end of the front leg bar 112, a connection seat 113 is connected to an upper end of the front leg bar 112, the rear leg 12 is rotatably connected to the connection seat 113 about a first axis a, the stay 13 is rotatably connected to the connection seat 113 about a second axis B, and the slider 21 is slidably connected to the front leg bar 112.

As shown in fig. 4 and 17, the connecting base 113 is provided with a handle 114 capable of rotating relative to the connecting base. When the child needs to be folded, the locking device is unlocked firstly, then the supporting rod 13 is pushed to rotate around the second axis B relative to the connecting seat 113 until the supporting rod 13 is attached to the seat assembly 14, the handle 114 is lifted, at the moment, the rear leg 12 is suspended, the supporting rod 13 and the seat assembly 14 rotate relative to the front leg 11 and are close to each other under the action of dead weight, the rear leg 12 is driven to be close to the front leg 11 for folding under the cooperation of the sliding piece 21, the first linkage folding rod 221 and the second linkage folding rod 222, folding operation is very simple, only after the locking device is unlocked, the supporting rod 13 is pushed to rotate towards the front leg 11, then the supporting rod 13 is pushed to be attached to the seat assembly 14, the handle 114 is lifted upwards, and the child car realizes automatic car folding under the cooperation of the supporting rod 13 and the seat assembly 14, the sliding piece 21, the first linkage folding rod 221 and the second linkage folding rod 222, and folding operation is more convenient.

As shown in fig. 6, 8 and 9, the locking device includes a locking assembly 3 disposed between a front leg 11 and a strut 13, the strut 13 is provided with a locking position 31, the front leg 11 is provided with a locking piece 32 capable of sliding relative to the front leg to be clamped in or separated from the locking position 31, the strut 13 is also provided with a push rod 15 capable of sliding relative to the strut, the strut 13 is provided with a pushing part 131 capable of pushing the locking piece 32 to separate from the locking position 31 along with sliding of the strut, an elastic reset piece 33 capable of pushing the locking piece 32 to reset is disposed between the locking piece 32 and the front leg 11, and the push rod 15 is provided with a pushing protrusion 151 capable of pushing the locking piece 32 to keep the locking piece 32 separated from the locking position 31 when the push rod rotates and folds relative to the front leg 11. When the locking assembly 3 needs to be unlocked, the push rod 15 is pushed to slide downwards along the supporting rod 13, when the push rod 15 slides downwards, the pushing protrusion 151 on the push rod 15 pushes the locking piece 32 to slide downwards, at this time, the locking piece 32 is gradually separated from the locking position 31 on the supporting rod 13, and the supporting rod 13 can rotate and fold relative to the front leg 11.

As shown in fig. 10 and 11, a locking assembly 4 capable of locking the sliding member 21, the front leg 11 and the locking member 32 is arranged between the sliding member 21 and the front leg 11, the locking assembly 4 comprises a locking position 41 arranged on the sliding member 21, a first sliding seat 42 capable of extending into the locking member 32 is arranged in the front leg 11, a locking member 43 capable of sliding relatively to the first sliding seat 42 and being blocked in or separated from the locking position 41 is arranged on the first sliding seat 42, a locking opening 321 capable of accommodating the end part of the first sliding seat 42 is arranged on the locking member 32, an abutting surface 322 capable of pushing the first sliding seat 42 to slide when the locking member 32 slides and is arranged in the locking opening 321, a first elastic element 44 capable of pushing the first sliding seat 42 to reset is arranged between the first sliding seat 42 and the front leg 11, and a second elastic element 45 capable of pushing the locking member 43 to reset is arranged between the locking member 43 and the front leg 11.

When the locking member 32 slides downward, the abutting surface 322 on the locking member 32 gradually pushes the end of the first sliding seat 42 to separate the first sliding seat 42 from the locking hole 321, at this time, the first sliding seat 42 is separated from the locking member 32 and abuts against the outer wall of the locking member 32, when the first sliding seat 42 slides vertically relative to the front leg 11, the first sliding seat 42 makes the locking member 43 slide laterally relative to the first sliding seat 42, the locking member 43 gradually separates from the locking position 41, the sliding member 21 can slide relative to the front leg 11, and the entire child car can be folded.

As shown in fig. 11, the first sliding seat 42 is provided with a first inclined sliding groove 421, the locking member 43 is connected with a first connecting shaft 46 inserted into the first inclined sliding groove 421 and capable of sliding in the first inclined sliding groove 421, and the first inclined sliding groove 421 is provided with a first abutting surface 4211 capable of abutting against the first connecting shaft 46 to enable the locking member 43 to slide. When the first sliding seat 42 slides downward, the first abutting surface 4211 on the first sliding seat 42 pushes the first connecting shaft 46, and the first connecting shaft 46 slides along the first inclined sliding groove 421 to pull the locking member 43 to slide laterally and separate from the locking position 41.

As shown in fig. 12 and 13, a latch assembly 5 capable of locking the push rod 15 and the support rod 13 is arranged between the push rod 15 and the support rod 13, the latch assembly comprises a latch position 51 arranged on the support rod 13, a second sliding seat 52 capable of sliding vertically relative to the push rod 15 is arranged on the push rod 15, a latch piece 53 capable of sliding transversely relative to the push rod 52 and being blocked in or separated from the latch position 51 is connected in the second sliding seat 52, an operation button 54 is arranged on the push rod 15, a connecting rod 55 is arranged between the operation button 54 and the second sliding seat 52, a first elastic piece 56 capable of pushing the latch piece 53 to reset is arranged between the latch piece 53 and the push rod 15, a third elastic piece 57 capable of pushing the second sliding seat 52 to reset is arranged between the second sliding seat 52 and the connecting rod 55, a third elastic piece 58 is arranged between the operation button 54 and the connecting rod 55, a second locking piece 61 capable of being blocked from sliding by being contacted with the wall surface of the connecting rod 55 is also arranged at the upper end of the connecting rod 55, a second locking piece 61 capable of being blocked by being contacted with the wall surface of the connecting rod 55 is arranged between the second locking piece 61 and the second locking piece 55 and the wall 61 is provided with a fourth elastic piece capable of being contacted with the wall 61. When the push rod 15 needs to be pushed to slide downwards relative to the supporting rod 13 for folding, the unlocking part 611 is pressed and pressed, at this time, the two lock pieces 61 slide transversely relative to the connecting rod 55, the wall surfaces of the two lock pieces 61 are separated from the wall surfaces of the connecting rod 55, then the operating button 54 is pressed, the operating button 54 pushes the connecting rod 55 to move downwards, the second sliding seat 52 is pushed to slide downwards when the connecting rod 55 moves, the locking piece 53 slides transversely relative to the second sliding seat 52 when the second sliding seat 52 slides downwards, the locking position 51 on the locking piece 53 is gradually separated from the supporting rod 13 when the locking piece 53 slides transversely, and at this time, the push rod 15 can slide downwards relative to the supporting rod 13 for folding.

As shown in fig. 12, a second inclined chute 521 is provided in the second sliding seat 52, the latch member 53 is connected to a second connection shaft 59 inserted into the second inclined chute 521 and capable of sliding in the second inclined chute 521, and a second abutment surface 5211 capable of abutting against the second connection shaft 59 to slide the latch member 53 is provided in the second inclined chute 521. When the second sliding seat 52 slides downward, the second abutting surface 5211 on the second sliding seat 52 pushes the second connecting shaft 59, and the second connecting shaft 59 slides along the second inclined chute 521 to pull the latch 53 to slide laterally and separate from the locking position 51.

As shown in fig. 12, 14 and 15, the stay 13 is connected with a slider 71 capable of sliding relative to the stay 13 to contact with the outer wall 150 of the push rod 15, the slider 71 is provided with an abutting wall 711 capable of adapting to the outer wall 150 of the push rod 15, the stay 13 is also connected with a wrench 72 capable of rotating relative to the stay 13, and the wrench 72 is provided with an abutting part 721 capable of abutting the slider 71 when the wrench rotates to a preset position, so that the abutting wall 711 and the outer wall 150 contact each other and abut against each other. The slide block 71 and the outer wall surface 150 of the push rod 15 are propped against each other, so that the push rod 15 can be prevented from sliding randomly, and the stay 13 and the push rod 13 can be prevented from swaying each other, so that when the child is unlocked, the wrench 72 needs to be pulled upwards, and the propping part 721 is misplaced with the slide block 71.

As shown in fig. 1, the seat assembly 14 includes a seat rod 141 rotatably connected to the connecting seat 113 around a third axis C, a seat leg 8 is disposed between the seat rod 141 and the push rod 15 and follows the expansion of the push rod 15 when the push rod slides and expands relative to the support rod, and a transverse rod 142 is disposed on the seat rod 141. The crossbar 142 is conveniently pushed by the stay 13 while also lifting the support force between the two seat posts 141. The seat stump 8 can be unfolded along with the unfolding of the baby carrier and folded along with the folding of the baby carrier, and the operation is convenient.

As shown in fig. 1, a storage bag 9 which can be unfolded or folded along with the subsequent movement of the legs 12 is arranged between the front legs 11 and the rear legs 12. The storage bag 9 is convenient for adults to store articles. The storage bag 9 can be unfolded along with the unfolding of the baby carrier and folded along with the folding of the baby carrier, so that the use is very convenient.

Claims (10)

1. A child's vehicle movable from an extended position to a collapsed position upon unlocking a latch, characterized by: including foreleg (11), foreleg (11) lower extreme be connected with front wheel (111), foreleg (11) on be connected with relative its back leg (12) of rotating around first axis (A), back leg (12) lower extreme be connected with rear wheel (121), foreleg (11) on still be connected with relative its around second axis (B) pivoted vaulting pole (13), foreleg (11) on be connected with relative its rotation expansion or folding seat subassembly (14) around third axis (C), seat subassembly (14), foreleg (11) and back leg (12) between be equipped with can make seat subassembly (14) and back leg (12) folding aggregate unit (2) of drawing close forward of foreleg (11) after locking device releases.

2. A child vehicle according to claim 1, wherein: the linkage device (2) comprises a sliding part (21) which is connected onto the front leg (11) in a sliding manner, a folding component (22) which can be unfolded or folded in a rotating manner relative to the sliding part (21) is connected onto the seat component (14), one end of the folding component (22) is connected onto the rear leg (12), and the folding component (22) can drive the rear leg (12) or the seat component (14) to rotate and fold towards the front leg (11) when the seat component (14) or the rear leg (12) rotates and folds relative to the front leg (11).

3. A child vehicle according to claim 2, wherein: the folding assembly (22) comprises a first linkage folding rod (221) which is rotationally connected between the sliding piece (21) and the seat assembly (14), one end of the first linkage folding rod (221) is rotationally connected to the seat assembly (14) around a fourth axis (D), the other end of the first linkage folding rod (221) is rotationally connected to the sliding piece (21) around a fifth axis (E), the folding assembly (22) further comprises a second linkage folding rod (222) which is rotationally connected between the sliding piece (21) and the rear leg (12), one end of the second linkage folding rod (222) is rotationally connected to the sliding piece (21) around a sixth axis (F), and the other end of the second linkage folding rod (222) is rotationally connected to the rear leg (12) around a seventh axis (G).

4. A child vehicle according to claim 3, wherein: the first linkage folding rod (221) and the second linkage folding rod (222) are arc-shaped.

5. A child vehicle according to claim 2, wherein: the front leg (11) comprises a front leg rod (112), the lower end of the front leg rod (112) is connected with a front wheel (111), the upper end of the front leg rod (112) is connected with a connecting seat (113), the rear leg (12) is rotationally connected to the connecting seat (113) around a first axis (A), the stay rod (13) is rotationally connected to the connecting seat (113) around a second axis (B), and the sliding piece (21) is slidingly connected to the front leg rod (112).

6. A child's vehicle according to claim 5, wherein: the connecting seat (113) is provided with a handle (114) which can rotate relative to the connecting seat.

7. A child vehicle according to claim 2, wherein: the locking device comprises a locking assembly (3) arranged between a front leg (11) and a supporting rod (13), wherein a locking position (31) is arranged on the supporting rod (13), a locking piece (32) which can slide relatively to the front leg (11) and is clamped in or separated from the locking position (31) is arranged in the front leg (11), a pushing rod (15) which can slide relatively to the supporting rod (13) is further arranged in the supporting rod (13), a pushing part (151) which can slide relatively to push the locking piece (32) to separate from the locking position (31) is arranged on the pushing rod (15), an elastic reset piece (33) which can push the locking piece (32) to reset is arranged between the locking piece (32) and the front leg (11), and a pushing protrusion (131) which can push the locking piece (32) to keep the locking piece (32) separated from the locking position (31) when the supporting rod (13) rotates and folds relatively to the front leg (11).

8. A child vehicle according to claim 7, wherein: the locking assembly comprises a sliding piece (21), a front leg (11) and a locking piece (32), wherein a locking assembly (4) capable of locking the sliding piece (21) is arranged between the sliding piece and the front leg (11), the locking assembly (4) comprises a locking position (41) arranged on the sliding piece (21), a first sliding seat (42) capable of extending into the locking piece (32) is arranged in the front leg (11), a locking piece (43) capable of sliding relatively to clamp in or separate from the locking position (41) is arranged on the first sliding seat (42), a locking opening (321) capable of accommodating the end part of the first sliding seat (42) is formed in the locking piece (32), a pushing surface (322) capable of pushing the first sliding seat (42) in sliding and unlocking is arranged in the locking opening (321), a first elastic element (44) capable of resetting the first sliding seat (42) is arranged between the first sliding seat (42) and the front leg (11), and a pushing piece (43) capable of resetting elastic pushing the second locking piece (45) is arranged between the locking piece (43) and the front leg (11).

9. A child vehicle according to claim 7, wherein: the push rod (15) and the supporting rod (13) between be equipped with the kayser subassembly (5) that can lock the two, kayser subassembly including locating kayser position (51) on supporting rod (13), push rod (15) on be equipped with second sliding seat (52) that can vertically slide relative to it, second sliding seat (52) in-connection have can relative its horizontal slip and block or break away from kayser position (51) kayser piece (53), push rod (15) on be equipped with operation button (54), operation button (54) and second sliding seat (52) between be equipped with connecting rod (55), kayser piece (53) and push rod (15) between be equipped with first elastic component (56) that can push away kayser piece (53) and reset, second sliding seat (52) and connecting rod (55) between be equipped with third elastic component (57) that can push up second sliding seat (52) and reset, operation button (54) and connecting rod (55) between be equipped with third elastic component (58), upper connecting rod (55) and connecting rod (55) can push away from the side (55) and be equipped with the connecting rod (55) that can push away from locking part (55) and release the connecting rod (61), a fourth elastic piece (62) which can enable the two locking pieces (611) to be in contact with the wall surface of the connecting rod (55) is arranged between the two locking pieces (611) and the connecting rod (55).

10. A child vehicle according to claim 7, wherein: the support rod (13) on be connected with can slide and with slider (71) of push rod (15) outer wall (150) contact relatively, slider (71) on be equipped with can with push rod (15) outer wall (150) looks adaptation support wall (711), support rod (13) on still be connected with can be relative its pivoted spanner (72), spanner (72) on be equipped with can support slider (71) and make support wall (711) and outer wall (150) contact each other and support portion (721) of leaning on when it rotates to the preset position.