CN215245070U - Children's barrow - Google Patents

Abstract

The utility model discloses a children's shallow, including preceding frame and back frame, preceding frame lower extreme is equipped with the front wheel subassembly, back frame lower extreme is equipped with the rear wheel subassembly, children's shallow still includes bracing piece and seat support piece, the bracing piece, seat support piece, four people of preceding frame and back frame are around first axis rotatable coupling, and, be equipped with the slider that can its slide relatively on the preceding frame, be equipped with preceding connecting rod between seat support piece front side and the slider, preceding connecting rod one end is around second axis and seat support piece rotatable coupling, the other end is around third axis and slider rotatable coupling, be equipped with the back connecting rod between back frame and the slider, back connecting rod one end is around fourth axis and back frame rotatable coupling, the other end is around fifth axis and slider rotatable coupling, still be connected with its handspike of closing relatively on the bracing piece. The utility model discloses simple structure, folding back is small, low cost.

Description

Children's barrow

[ technical field ] A method for producing a semiconductor device

The utility model relates to a children's shallow.

[ background of the invention ]

The child stroller has become an indispensable product in the growth process of children. Current children's carts are generally capable of being unfolded and folded for pushing a seated child in an unfolded state and for convenient carrying or storage in a folded state. But the connecting rod structure of the existing children's barrow is generally more complex, and has larger volume and higher cost 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 baby stroller with simple structure, small volume after being folded and low cost.

The utility model discloses a realize through following technical scheme:

a stroller, movable from an unfolded position to a folded position after a locking device is unlocked, characterized in that: the children's stroller comprises a front frame 1 and a rear frame 2, wherein a front wheel assembly 1a is arranged at the lower end of the front frame 1, a rear wheel assembly 2a is arranged at the lower end of the rear frame 2, the children's stroller further comprises a support rod 3 and a seat support member 4, the support rod 3, the seat support member 4, the front frame 1 and the rear frame 2 are rotatably connected around a first axis A, a sliding member 5 capable of sliding relative to the front frame 1 is arranged on the front frame 1, a front connecting rod 6 is arranged between the front side of the seat support member 4 and the sliding member 5, one end of the front connecting rod 6 is rotatably connected with the seat support member 4 around a second axis B, the other end of the front connecting rod is rotatably connected with the sliding member 5 around a third axis C, a rear connecting rod 7 is arranged between the rear frame 2 and the sliding member 5, one end of the rear connecting rod 7 is rotatably connected with the rear frame 2 around a fourth axis D, and the other end of the rear connecting rod is rotatably connected with the sliding member 5 around a fifth axis E, the support bar 3 is also connected with a hand push bar 8 which can be folded relative to the support bar.

The stroller as described above, characterized in that: the third axis C is coaxial with the fifth axis E.

The stroller as described above, characterized in that: preceding frame 1 upper end be equipped with first articulated seat 11, 2 upper ends of back frame be equipped with the articulated seat 21 of second, 3 lower extremes of bracing piece be equipped with third articulated seat 31, 4 rear ends of seat support piece be equipped with the articulated seat 41 of fourth, preceding frame 1, back frame 2, seat support piece 4 and bracing piece 3 through first articulated seat 11, the articulated seat 21 of second, third articulated seat 31 and the articulated seat 41 of fourth around first axis A rotatable coupling.

The stroller as described above, characterized in that: the locking device comprises an outer locking assembly 91 arranged between the third hinged seat 31 and the second hinged seat 21, and an inner locking assembly 92 which is arranged between the second hinged seat 21 and the first hinged seat 11 and can be driven by the support rod 3 which rotates downwards to unlock after the outer locking assembly 91 is unlocked.

The stroller as described above, characterized in that: outer locking subassembly 91 include and establish a plurality of locking grooves 911 on third articulated seat 31 along the circumferencial direction, second articulated seat 21 and the relative one side of third articulated seat 31 be equipped with a plurality of locking grooves 912 along the circumferencial direction, the space that second articulated seat 21 and third articulated seat 31 enclose be equipped with in it lateral shifting and can with the outer spline of locking groove 911 and locking groove 912 block simultaneously, outer spline 913 and third articulated seat 31 between still be equipped with can drive outer spline 913 lateral shifting and the rotatory piece 914 that breaks away from with locking groove 911 when rotating, bracing piece 3 in be equipped with the driving piece 915 that can drive rotatory piece 914 rotation and lateral shifting, outer spline 913 and second articulated seat 21 between still be equipped with outer reset spring 916.

The stroller as described above, characterized in that: the handspike 8 establish in bracing piece 3 and can stretch out and draw back relatively to bracing piece 3, driving piece 915 including establishing the fixing base 9151 in bracing piece 3, fixing base 9151 on be connected with can be promoted by 8 lower extremes of handspike and the gliding sliding block 9152 downwards of fixing base 9151 relatively, sliding block 9152 and rotatory piece 914 between be equipped with the cable 9153 of being connected with the two, and fixing base 9151 on be equipped with and supply cable 9153 to walk around and make the sliding block 9152 of lapse can stimulate rotatory piece 914 pivoted and walk around groove 9154, driving piece 915 still include and establish a plurality of oblique bosss 9155 on third articulated seat 31 along the circumferencial direction, rotatory piece 914 on be equipped with when it is rotatory can with oblique boss 9155 cooperation and make the cooperation groove 9156 of rotatory piece 914 lateral shifting.

The stroller as described above, characterized in that: the inner locking assembly 92 includes a plurality of locking grooves 921 formed on the first hinge base 11 in a circumferential direction, a plurality of clamping grooves are arranged on one side of the second hinging seat 21 opposite to the first hinging seat 11 along the circumferential direction, an internal spline 923 which can transversely move in the space enclosed by the second hinged seat 21 and the first hinged seat 11 and can be simultaneously clamped with the locking groove 921 and the clamping groove is arranged in the space, the inner spline 923 can extend transversely through the outer spline 913 and the transverse shaft 924 of the rotary block 914, an arc-shaped groove 925 for inserting the end of the cross shaft 924 is arranged on the third hinge seat 31 along the circumferential direction, the bottom of the arc-shaped groove 925 is provided with a slope which can be contacted with the end part of the cross shaft 924 and can push the cross shaft 924 to move transversely when the support rod 3 rotates downwards so as to separate the internal spline 923 from the clamping groove, an inner return spring 926 is further arranged between the inner spline 923 and the first hinge base 11.

The stroller as described above, characterized in that: the seat assembly 10 is characterized in that the seat support 4 is further connected with a seat assembly 10 which can rotate relative to the seat support to realize seat reversing, the seat assembly 10 comprises a seat plate 101 which is rotatably connected with the seat support 4, the rear side of the seat plate 101 is connected with a backrest 102 which can be folded relative to the seat plate 101, the front side of the seat plate 101 is connected with a leg support 103 which can rotate relative to the seat plate, a locking structure which is used for locking the relative position of the seat plate 101 and the seat support 4 is arranged between the seat plate 101 and the seat support 4, and a driven piece 30 which is connected with the locking structure and can be driven by the leg support 103 to drive the locking structure to unlock when the leg support 103 upwards rotates to a set position is further arranged on the seat plate 101.

The stroller as described above, characterized in that: the locking structure comprises an annular groove 201 arranged on the seat support member 4 along the circumferential direction and a radial groove 202 communicated with the annular groove 201, the seat plate 101 is provided with a locking block 203 which can slide relative to the seat plate and can be clamped with the radial groove 202, a pull rope 204 which can pull the locking block 203 to be separated from the radial groove 202 when the driven member 30 is driven by the leg support member 103 to act is arranged between the driven member 30 and the locking block 203, and a first return spring 205 is also arranged between the seat plate 101 and the locking block 203.

The stroller as described above, characterized in that: the driven member 30 is connected to the front end of the seat plate 101 in a ring shape and can rotate, one end of the pull rope 204 is connected to the driven member 30 and deviates from the rotation axis of the driven member, a convex bump 30a is arranged on the outer side wall of the driven member 30, and a driving block 103a which can push the bump 30a to enable the driven member 30 to rotate relative to the seat plate 101 when the leg supporting member 103 rotates upwards relative to the seat plate 101 is arranged on the leg supporting member 103.

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

1. the utility model discloses when children's shallow is folding, the earlier relative bracing piece of handspike is closed, then the relative back frame of bracing piece rotates downwards and draws close to the frame of back, then upwards mentions whole children's shallow from back frame upper end, under the effect of gravity, seat support piece, back frame and bracing piece all draw close to the frame of preceding, and this in-process slider slides downwards along preceding frame to realize closing of whole children's shallow. The folding of the whole stroller can be realized only by downwards rotating the supporting rod and lifting the whole stroller, and the whole folding operation is finished at one time, so that the folding stroller is simple, convenient and quick. And the front frame, the rear frame, the seat supporting piece and the supporting rod are connected around the same axis, so that the whole baby stroller is compact in structure and small in size after being folded.

2. The utility model discloses a locking device is including establishing the outer locking Assembly between the articulated seat of third articulated seat and second and establishing the interior locking Assembly between the articulated seat of second and first articulated seat to after the unblock of outer locking Assembly and bracing piece downwardly pivoted in-process, the unblock of locking Assembly in the bracing piece drives again, realizes the linkage of the two, makes the folding operation process of children's shallow simple swift.

3. The utility model discloses when folding, only need the handspike to carry out downwards and strike the sliding block, the sliding block just stimulates the cable and makes rotatory piece rotate at the lapse in-process, rotatory piece just is transverse movement again and promotes the locking groove on external splines and the third hinge seat and break away from at the pivoted in-process, the unblock of external locking subassembly this moment, just this moment can the bracing piece of rotating downwards, the bracing piece is at the pivoted in-process, the slope on the arc wall on the third hinge seat promotes the cross axle again, thereby make internal splines transverse movement, the internal splines just breaks away from with the block groove on the articulated seat of second, the articulated seat of second is with the unblock again of first hinge seat this moment, make the frame rotation before the back frame can be relative. Therefore, the linkage of the unlocking of the support rod and the rear frame and the unlocking operation of the rear frame and the front frame are realized, the design is ingenious, the operation is convenient, the support rod, the rear frame, the front frame and the seat support piece are coaxially connected, and the whole baby stroller is simple and compact in structure and small in size after being folded.

4. The utility model discloses children's shallow simple structure, folding convenient operation, folding back is small, and low cost 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 one of exploded views of components of the present invention;

fig. 5 is a second exploded view of the components of the present invention;

FIG. 6 is one of the perspective views of the components of the present invention;

fig. 7 is a second perspective view of the components of the present invention;

fig. 8 is a third exploded view of the components of the present invention;

FIG. 9 is a side view of the present invention with the reversible seat assembly installed;

FIG. 10 is a perspective view of the seat support;

FIG. 11 is one of the schematic views of the seat assembly;

FIG. 12 is a second schematic view of the seat assembly;

fig. 13 is a third schematic view of the seat assembly.

[ detailed description ] embodiments

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

as shown in fig. 1 to 3, a stroller capable of moving from an unfolded position to a folded position after a locking device is unlocked comprises a front frame 1 and a rear frame 2, wherein a front wheel assembly 1a is provided at the lower end of the front frame 1, a rear wheel assembly 2a is provided at the lower end of the rear frame 2, the stroller further comprises a support rod 3 and a seat support 4, the support rod 3, the seat support 4, the front frame 1 and the rear frame 2 are rotatably connected around a first axis a, a sliding member 5 capable of sliding relative to the front frame 1 is provided on the front frame 1, a front connecting rod 6 is provided between the front side of the seat support 4 and the sliding member 5, one end of the front connecting rod 6 is rotatably connected with the seat support 4 around a second axis B, the other end is rotatably connected with the sliding member 5 around a third axis C, a rear connecting rod 7 is provided between the rear frame 2 and the sliding member 5, one end of the rear connecting rod 7 is rotatably connected with the rear frame 2 around a fourth axis D, the other end of the rear connecting rod is rotatably connected with the sliding piece 5 around a fifth axis E, and the supporting rod 3 is further connected with a hand push rod 8 which can be folded relative to the supporting rod. When the baby stroller is folded, the hand push rod 8 is firstly folded relative to the supporting rod 3, then the supporting rod 3 rotates downwards relative to the rear frame 2 and is closed to the rear frame 2, then the whole baby stroller is upwards lifted from the upper end of the rear frame 2, the seat supporting piece 4, the rear frame 2 and the supporting rod 3 are closed to the front frame 1 under the action of gravity, and the sliding piece 5 slides downwards along the front frame 1 in the process, so that the folding of the whole baby stroller is realized. The folding of the whole baby stroller can be realized only by downwards rotating the supporting rod 3 and lifting the whole baby stroller, and the whole folding operation is finished at one time, so that the folding is simple, convenient and quick. And the front frame 1, the rear frame 2, the seat supporting piece 4 and the supporting rod 3 are connected around the same axis, so that the whole baby stroller has a compact structure and a small volume after being folded.

As shown in fig. 2 and 3, the third axis C is coaxial with the fifth axis E. Therefore, the front connecting rod 6, the sliding piece 5 and the rear connecting rod 7 are coaxially hinged, so that the stroller is simple and compact in structure and flexible to fold.

As shown in fig. 4 to 6, the upper end of the front frame 1 is provided with a first hinge seat 11, the upper end of the rear frame 2 is provided with a second hinge seat 21, the lower end of the support rod 3 is provided with a third hinge seat 31, the rear end of the seat support member 4 is provided with a fourth hinge seat 41, and the front frame 1, the rear frame 2, the seat support member 4 and the support rod 3 are rotatably connected around the first axis a through the first hinge seat 11, the second hinge seat 21, the third hinge seat 31 and the fourth hinge seat 41.

As shown in fig. 4 to 6, the locking device includes an outer locking assembly 91 disposed between the third hinge base 31 and the second hinge base 21, and an inner locking assembly 92 disposed between the second hinge base 21 and the first hinge base 11 and capable of being driven by the support rod 3 rotating downward to be unlocked after the outer locking assembly 91 is unlocked. When the children's shallow is folding, make outer locking Assembly 91 unblock earlier, then rotate bracing piece 3 downwards, bracing piece 3 just drives interior locking Assembly 92 unblock at the rotation in-process to realize outer locking Assembly 91 and interior locking Assembly 92 and link in proper order, make the folding operation process of children's shallow simple swift.

As shown in fig. 4 to 6, the outer locking assembly 91 includes a plurality of locking grooves 911 circumferentially formed on the third hinge base 31, a plurality of locking grooves 912 circumferentially formed on the opposite side of the second hinge base 21 and the third hinge base 31, an outer spline 913 capable of moving transversely in the space surrounded by the second hinge base 21 and the third hinge base 31 and engaging with the locking grooves 911 and the locking grooves 912 simultaneously, a rotating block 914 capable of driving the outer spline 913 to move transversely to disengage from the locking grooves 911 when rotating is further disposed between the outer spline 913 and the third hinge base 31, a driving member 915 capable of driving the rotating block 914 to rotate and move transversely is disposed in the support rod 3, and an outer return spring 916 is further disposed between the outer spline 913 and the second hinge base 21. When the baby stroller is folded, the driving piece 915 drives the rotating block 914 to rotate, and drives the rotating block 914 to move transversely in the rotating process, the rotating block 914 pushes the outer spline 913 to move transversely in the moving process, the outer spline 913 disengages from the locking groove 911 on the third hinged seat 31, at the moment, the outer locking component 91 is unlocked, the support rod 3 can rotate relative to the rear frame 2, the support rod 3 rotates downwards relative to the rear frame 2, the support rod 3 can drive the inner locking component 92 to unlock, so that the rear frame 2 is unlocked with the front frame 1, when the baby stroller is lifted upwards from the upper end of the rear frame 2, the seat support piece 4 and the rear frame 2 can be moved close to the front frame 1 in a rotating manner, and the baby stroller is convenient to fold.

As shown in fig. 4 to 8, the handspike 8 is disposed in the support rod 3 and can stretch out and draw back relative to the support rod 3, the driving member 915 includes a fixing seat 9151 disposed in the support rod 3, the fixing seat 9151 is connected with a sliding block 9152 which can be pushed by the lower end of the handspike 8 and slides downwards relative to the fixing seat 9151, a cable 9153 connected with the sliding block 9152 and the rotating block 914 is disposed between the sliding block 9152 and the rotating block 914, the fixing seat 9151 is provided with an bypassing groove 9154 which can allow the sliding block 9153 to bypass and make the downward moving sliding block 9152 pull the rotating block 914 to rotate, the driving member 915 further includes a plurality of inclined bosses 9155 disposed on the third hinge seat 31 along the circumferential direction, and the rotating block 914 is provided with a matching groove 9156 which can be matched with the inclined bosses 9155 to make the rotating block 914 move transversely when the rotating block 914 rotates. When handspike 8 is striking sliding block 9152 downwards, sliding block 9152 just slides downwards, because cable 9153 is through around groove 9154 coiling on fixing base 9151, so when sliding block 9152 slides downwards, sliding block 9152 can stimulate cable 9153 other end upward movement, thereby the rotatory piece 914 of pulling is rotatory, rotatory piece 914 is at the in-process of rotation, the oblique boss 9155 on cooperation groove 9156 and the third hinge seat 31 supports and leans on, oblique boss 9155 just promotes rotatory piece 914 lateral shifting, and then promote external splines 913 and 911 locking groove and break away from, design very ingenious.

As shown in fig. 4 to 6, the inner locking member 92 includes a plurality of locking grooves 921 formed on the first hinge base 11 in a circumferential direction, a plurality of clamping grooves (not shown) are arranged on one side of the second hinging seat 21 opposite to the first hinging seat 11 along the circumferential direction, an internal spline 923 which can transversely move in the space enclosed by the second hinged seat 21 and the first hinged seat 11 and can be simultaneously clamped with the locking groove 921 and the clamping groove is arranged in the space, the inner spline 923 can extend transversely through the outer spline 913 and the transverse shaft 924 of the rotary block 914, an arc-shaped groove 925 for inserting the end of the cross shaft 924 is arranged on the third hinge seat 31 along the circumferential direction, the bottom of the arc-shaped groove 925 is provided with a slope which can be contacted with the end part of the cross shaft 924 and can push the cross shaft 924 to move transversely when the support rod 3 rotates downwards so as to separate the internal spline 923 from the clamping groove, an inner return spring 926 is further arranged between the inner spline 923 and the first hinge base 11. When children's shallow is folding, only need handspike 8 to push down and striking sliding block 9152, sliding block 9152 just stimulates cable 9153 and makes rotatory piece 914 rotate at the downward slip in-process, rotatory piece 914 just is at the pivoted in-process lateral shifting again and promotes outer spline 913 and the locking groove 911 on the third articulated seat 31 and break away from, the unblock of outer locking subassembly 91 this moment, just can rotate bracing piece 3 downwards this moment, bracing piece 3 is at the pivoted in-process, slope on the arc wall 925 on the third articulated seat 31 promotes cross axle 924 again, thereby make inner spline 923 lateral shifting, inner spline 923 just breaks away from with the block groove on the articulated seat 21 of second, the articulated seat 21 of second is unblock again with first articulated seat 11 this moment, make rear frame 2 can be relative preceding frame 1 rotate. Therefore, the linkage of the unlocking of the support rod 3 and the rear frame 2 and the unlocking operation of the rear frame 2 and the front frame 1 are realized, the design is ingenious, the operation is convenient, and the support rod 3, the rear frame 2, the front frame 1 and the seat support piece 4 are coaxially connected, so that the whole children stroller is simple and compact in structure and small in size after being folded.

As shown in fig. 9 to 11, the seat support 4 is further connected with a seat assembly 10 capable of rotating relative to the seat support to change the direction of the seat, the seat assembly 10 includes a seat plate 101 rotatably connected with the seat support 4, a backrest 102 foldable relative to the seat plate 101 is connected to a rear side of the seat plate 101, a leg support 103 capable of rotating relative to the seat plate 101 is connected to a front side of the seat plate 101, a latch mechanism for locking the relative position of the seat plate 101 and the seat support 4 is provided between the seat plate 101 and the seat support 4, and the seat plate 101 is further provided with a follower 30 connected with the latch mechanism and capable of being driven by the leg support 103 to drive the latch mechanism to unlock when the leg support 103 rotates upwards to a set position. A rotatable seat assembly 10 is provided on the seat support 4, and the seat assembly 10 can be reversed by rotating the seat assembly 10 and locking it by a latch mechanism. Moreover, when the locking structure needs to be unlocked to realize the reversing of the seat assembly 10, the leg support 103 drives the driven member 30 to move only by lifting the leg support 103 upwards to a set position, and the driven member 30 drives the locking structure to be unlocked. Therefore, only the leg support 103 needs to be lifted upwards, so that the situation that a hand needs to be extended under the seat plate 101 to touch and operate the locking structure in the conventional seat assembly reversing process is avoided, and the locking structure is simpler and quicker to operate.

As shown in fig. 10 to 13, the latch structure includes an annular groove 201 circumferentially provided on the seat support 4 and a radial groove 202 communicating with the annular groove 201, the seat plate 101 is provided with a latch block 203 slidable relative thereto and engageable with the radial groove 202, a pull rope 204 capable of pulling the latch block 203 out of engagement with the radial groove 202 when the follower 30 is driven by the leg support 103 to operate is provided between the follower 30 and the latch block 203, and a first return spring 205 is further provided between the seat plate 101 and the latch block 203. When the latch 203 is engaged with the radial slot 202, the orientation of the seat assembly 10 is oriented, and when a change of direction is desired, the leg support 103 is lifted upward, the leg support 103 reaches a set position to push the follower 30, the follower 30 pulls the latch 203 out of engagement with the radial slot 202 via the pull cord 204, and the seat assembly 10 can be rotated to change direction.

As shown in fig. 11 and 12, the driven member 30 is connected to the front end of the seat plate 101 in a ring shape and can rotate, one end of the pulling rope 204 is connected to the driven member 30 and deviates from the rotation axis thereof, a protruding bump 30a is arranged on the outer side wall of the driven member 30, and a driving block 103a capable of pushing the bump 30a to rotate the driven member 30 relative to the seat plate 101 when the leg supporting member 103 rotates upward relative to the seat plate 101 is arranged on the leg supporting member 103. When the rotating leg support 103 is lifted up, the driving block 103a can touch the protrusion 30a to push the follower 30 to rotate, and the pull rope 204 is pulled during the rotation of the follower 30 to disengage the latch block 203 from the radial groove 202. Thus, when the seat assembly 10 is reversed, the leg support 103 is simply lifted upward, which is more convenient and quicker to operate.

Claims (10)

1. A stroller, movable from an unfolded position to a folded position after a locking device is unlocked, characterized in that: comprises a front frame (1) and a rear frame (2), the lower end of the front frame (1) is provided with a front wheel component (1a), the lower end of the rear frame (2) is provided with a rear wheel component (2a), the stroller also comprises a support rod (3) and a seat support (4), the support rod (3), the seat support (4), the front frame (1) and the rear frame (2) are rotatably connected around a first axis (A), the front frame (1) is provided with a sliding part (5) capable of sliding relative to the front frame, a front connecting rod (6) is arranged between the front side of the seat support (4) and the sliding part (5), one end of the front connecting rod (6) is rotatably connected with the seat support (4) around a second axis (B), the other end of the front connecting rod is rotatably connected with the sliding part (5) around a third axis (C), a rear connecting rod (7) is arranged between the rear frame (2) and the sliding part (5), one end of the rear connecting rod (7) is rotatably connected with the rear frame (2) around a fourth axis (D), the other end of the rear connecting rod is rotatably connected with the sliding piece (5) around a fifth axis (E), and the supporting rod (3) is further connected with a hand push rod (8) which can be folded relatively.

2. The stroller of claim 1, wherein: the third axis (C) is coaxial with the fifth axis (E).

3. The stroller of claim 1, wherein: preceding frame (1) upper end be equipped with first articulated seat (11), back frame (2) upper end be equipped with the articulated seat of second (21), bracing piece (3) lower extreme be equipped with third articulated seat (31), seat support piece (4) rear end be equipped with the articulated seat of fourth (41), preceding frame (1), back frame (2), seat support piece (4) and bracing piece (3) through the articulated seat of first articulated seat (11), second (21), the articulated seat of third (31) and the articulated seat of fourth (41) around first axis (A) rotatable coupling.

4. The stroller of claim 3, wherein: the locking device comprises an outer locking assembly (91) arranged between a third hinged seat (31) and a second hinged seat (21), and the locking device further comprises an inner locking assembly (92) which is arranged between the second hinged seat (21) and a first hinged seat (11) and can be driven by a support rod (3) which rotates downwards to unlock after the outer locking assembly (91) is unlocked.

5. The stroller of claim 4, wherein: the outer locking component (91) comprises a plurality of locking grooves (911) which are arranged on the third hinged seat (31) along the circumferential direction, a plurality of locking grooves (912) are arranged on one side of the second hinging seat (21) opposite to the third hinging seat (31) along the circumferential direction, an external spline (913) which can transversely move in the space enclosed by the second hinged seat (21) and the third hinged seat (31) and can be simultaneously clamped with the locking groove (911) and the locking groove (912) is arranged in the space, a rotating block (914) which can drive the external spline (913) to move transversely and separate from the locking groove (911) when rotating is arranged between the external spline (913) and the third hinge seat (31), a driving part (915) which can drive the rotating block (914) to rotate and move transversely is arranged in the supporting rod (3), an outer return spring (916) is further arranged between the outer spline (913) and the second hinged seat (21).

6. The stroller of claim 5, wherein: the hand push rod (8) is arranged in the support rod (3) and can stretch and retract relative to the support rod (3), the driving part (915) comprises a fixed seat (9151) arranged in the supporting rod (3), the fixed seat (9151) is connected with a sliding block (9152) which can be pushed by the lower end of the hand push rod (8) and slides downwards relative to the fixed seat (9151), a pull rope (9153) connected with the sliding block (9152) and the rotating block (914) is arranged between the sliding block and the rotating block, and the fixed seat (9151) is provided with a winding groove (9154) which can be used for the cable (9153) to wind and lead the sliding block (9152) moving downwards to pull the rotating block (914) to rotate, the driving piece (915) also comprises a plurality of inclined bosses (9155) which are arranged on the third hinge seat (31) along the circumferential direction, the rotating block (914) is provided with a matching groove (9156) which can be matched with the inclined boss (9155) when the rotating block (914) rotates so as to ensure that the rotating block (914) moves transversely.

7. The stroller of claim 5, wherein: the internal locking subassembly (92) include and establish a plurality of card locked groove (921) on first articulated seat (11) along the circumferencial direction, the articulated seat of second (21) and first articulated seat (11) relative one side be equipped with a plurality of block groove along the circumferencial direction, the articulated seat of second (21) and first articulated seat (11) enclose the space in be equipped with can be in its internal lateral shifting and can with card locked groove (921) and block groove internal spline (923) of block simultaneously, internal spline (923) on can transversely pass external spline (913) and cross axle (924) of rotatory piece (914), third articulated seat (31) on be equipped with along the circumferencial direction and can supply cross axle (924) tip male arc wall (925), the tank bottom of arc wall (925) be equipped with can with cross axle (924) tip touch and connect and can promote cross axle (924) lateral shifting and make slope that internal spline (923) and block groove break away from when bracing piece (3) rotate downwards, an inner return spring (926) is further arranged between the inner spline (923) and the first hinged seat (11).

8. Child stroller according to any of claims 1 to 7, characterized in that: seat support piece (4) on still be connected with seat subassembly (10) that can rotate in order to realize the seat switching-over relatively it, seat subassembly (10) including with seat support piece (4) rotatable coupling's bedplate (101), bedplate (101) rear side be connected with can be relatively bedplate (101) folding back (102), bedplate (101) front side be connected with its pivoted leg support piece (103) relatively, bedplate (101) and seat support piece (4) between be equipped with the kayser structure that is used for locking the two relative position, bedplate (101) on still be equipped with and kayser structural connection and can be driven by leg support piece (103) and drive follower (30) that kayser structure unlocks when leg support piece (103) upwards rotate to the settlement position.

9. The stroller of claim 8, wherein: the locking structure comprises an annular groove (201) formed in the seat supporting piece (4) in the circumferential direction and a radial groove (202) communicated with the annular groove (201), the seat plate (101) is provided with a locking block (203) capable of sliding relative to the seat plate and being clamped with the radial groove (202), a pull rope (204) capable of pulling the locking block (203) to be separated from the radial groove (202) when the driven member (30) is driven by the leg supporting piece (103) to act is arranged between the driven member (30) and the locking block (203), and a first return spring (205) is further arranged between the seat plate (101) and the locking block (203).

10. The stroller of claim 9, wherein: the driving piece (30) is connected to the front end of the seat plate (101) in an annular and rotatable mode, one end of the pulling rope (204) is connected to the driven piece (30) and deviates from the position of the rotating axis of the driven piece, a protruding bump (30a) is arranged on the outer side wall of the driven piece (30), and a driving block (103a) capable of pushing the bump (30a) to enable the driven piece (30) to rotate relative to the seat plate (101) when the leg support piece (103) rotates upwards relative to the seat plate (101) is arranged on the leg support piece (103).

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