CN216002741U - Children's barrow - Google Patents

Abstract

The utility model discloses a children's shallow, including the preceding branch that has preceding connecting seat and the back branch that has the back connecting seat, back connecting seat and preceding connecting seat are around first axis rotatable coupling, preceding branch and back branch lower extreme are equipped with front wheel subassembly and rear wheel subassembly respectively, children's shallow is still including the last branch that has last connecting seat, it winds second axis rotatable coupling with preceding connecting seat to go up the connecting seat, the position that upper strut can stop includes folding position when drawing close with the preceding branch and the expansion position when relative preceding branch expandes, be equipped with in the preceding connecting seat and remove the back branch that draws close with the preceding branch when expanding the position from folding position and strut the piece that struts, strut piece includes one end and back connecting seat and wind third axis rotatable coupling's strut pole, strut the other end of pole and the drive division swing joint in the last connecting seat. The utility model discloses simple structure is compact, expandes convenient operation.

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 stroller has become an indispensable product in the growth process of infants. Current stroller designs are generally capable of being unfolded or folded. At present, a plurality of children's carts are provided with less external transmission rod pieces for pursuing structural simplicity, but when the children's carts are moved from a folding state to an unfolding state, the children's carts are required to be unfolded relative to a front supporting rod by pulling an upper supporting rod by hands, and are also required to be unfolded relative to the front supporting rod by pulling a rear supporting rod by hands, so that the operation is troublesome.

[ Utility model ] content

The utility model aims at overcoming the defects of the prior art and providing a child cart which has simple and compact structure and convenient operation.

The utility model discloses a realize through following technical scheme:

a stroller, characterized in that: including front strut 1 that has preceding connecting seat 11 and the back strut 2 that has back connecting seat 21, back connecting seat 21 and preceding connecting seat 11 around first axis A rotatable coupling, preceding strut 1 and back strut 2 lower extreme be equipped with front wheel subassembly 12 and rear wheel subassembly 22 respectively, children's shallow still including having last connecting seat 31 last connecting rod 3, last connecting seat 31 and preceding connecting seat 11 around second axis B rotatable coupling, the position that last connecting rod 3 can stop include folding position when drawing close with front strut 1 and the expansion position when relative front strut 1 expandes, preceding connecting seat 11 in be equipped with last connecting rod 3 from folding position remove to expansion position with front strut 1 when folding position back strut 2 that draws close together strut 4, expansion 4 include one end and back connecting seat 21 around third axis C rotatable coupling's expansion pole 41, the other end of the opening rod 41 is movably connected with a driving part 42 in the upper connecting seat 31.

The position of expandeing including the reverse position that can reverse the children's shallow of carrying out and can forward the forward position of carrying out children's shallow after last branch 3 is preceding connecting seat 11 rotates relatively, work as last branch 3 move to reverse position from folding position time, prop opening 4 and prop out back branch 2 and make children's shallow be in the state of expandeing 1 preceding branch relatively.

The upper connecting seat 31 is internally provided with a sliding block 51 capable of longitudinally sliding in the upper connecting seat, a pushing part 52 capable of pushing the sliding block 51 to transversely move when the sliding block 51 longitudinally slides is further arranged between the sliding block 51 and the upper connecting seat 31, the upper end of the opening rod 41 is provided with a transverse shaft 43, the driving part 42 is a guide surface which is arranged on the sliding block 51 and can be in sliding fit with the end part of the transverse shaft 43, and the sliding block 51 is further provided with an open slot 53 which is connected with the guide surface and can be clamped with the transverse shaft 43 when the upper support rod 3 moves to the reverse direction or the forward direction.

The space defined by the front connecting seat 11 and the upper connecting seat 31 is internally provided with a first locking device for locking the front connecting seat 11 and the upper connecting seat 31, the first locking device comprises a first clamping groove 54 arranged on the front connecting seat 11 and the upper connecting seat 31 along the circumferential direction, the space defined by the front connecting seat 11 and the upper connecting seat 31 is internally provided with a first spline 55 capable of clamping the first clamping groove 54 on the front connecting seat 11 and the upper connecting seat 31, one side of the first spline 55 is abutted against and matched with the sliding block 51 so that the sliding block 51 can push the first spline 55 to be separated from the first clamping groove 54 on the upper connecting seat 31 when sliding relative to the upper connecting seat 31, and a first spring 56 capable of pushing the first spline 55 to reset is arranged between the other side of the first spline 55 and the front connecting seat 11.

The front wheel assembly 12 is rotatably connected with a front wheel seat 13 at the lower end of the front support rod 1 through a front pivot shaft 121, the rear wheel assembly 22 is rotatably connected with a rear wheel seat 23 at the lower end of the rear support rod 2 through a rear pivot shaft 221, a front locking device 14 capable of orienting the front wheel fork 122 is arranged between the front wheel seat 13 and a front wheel fork 122 on the front wheel assembly 12, a rear locking device 24 capable of orienting the rear wheel fork 222 is arranged between the rear wheel seat 23 and a rear wheel fork 222 on the rear wheel assembly 22, a front transmission part 15 capable of unlocking the front locking device 14 when the upper support rod 3 moves from a reverse displacement to a forward position and locking the front locking device 14 when the upper support rod 3 moves from the forward displacement to the reverse position is arranged in the front connecting seat 11, and a rear transmission part 25 capable of locking the rear locking device 24 when the upper support rod 3 moves from the reverse displacement to the forward position and unlocking the rear locking device 24 when the upper support rod 3 moves from the forward displacement to the reverse position is arranged in the rear connecting seat 21 The front driving part 15 includes a front driving rod 152 having a front cross bar 151 and a rear driving rod 252 having a rear cross bar 251, the upper connecting seat 31 is provided with an arc surface 32 capable of being in sliding fit with the front cross bar 151 and the rear cross bar 251, the upper connecting seat 31 is further provided with a front groove 33 capable of allowing the front cross bar 151 to fall and a rear groove 34 capable of allowing the rear cross bar 251 to fall, a guide inclined surface 35 capable of being in sliding fit with the front cross bar 151 and the rear cross bar 251 to enable the front driving rod 152 and the rear driving rod 252 to slide up and down relative to the upper connecting seat 31 when the upper support rod 3 is switched between a reverse position and a forward position is arranged between the front groove 33 and the rear groove 34 and the arc surface 32, a front pulling rope 16 capable of connecting the front driving rod 152 and the front locking device 14 and pulling the front locking device 14 to be unlocked is arranged between the rear driving rod 252 and the rear locking device 24 and a rear pulling rope 26 capable of connecting the front driving rod and pulling the rear locking device 24 to be unlocked is arranged between the front driving rod 152 and the rear locking device 24, the front connecting seat 11 is further provided with a front spring 153 capable of sliding and resetting the front driving rod 152 downwards and a rear spring 253 capable of sliding and resetting the rear driving rod 252 downwards.

The front connecting seat 11 is further connected with a seat assembly 6, the seat assembly 6 comprises a supporting seat 61 rotatably connected with the front connecting seat 11 around a fourth axis D, the supporting seat 61 is connected with a seat rod 62, the supporting seat 61 is further rotatably connected with a backrest seat 63 around a fifth axis E, the backrest seat 63 is connected with a backrest rod 64, a first locking device for locking the backrest seat 63 and the supporting seat 61 is arranged between the backrest seat 63 and the supporting seat 61, a second locking device for locking the supporting seat 61 and the front connecting seat 11 is arranged between the supporting seat 61 and the front connecting seat, the second locking device comprises a second locking groove 71 arranged on the front connecting seat 11 and a second arc-shaped groove 72 communicated with the second locking groove 71, a locking block 73 capable of radially moving in the supporting seat 61 is arranged in the supporting seat 61, the locking block 73 comprises a sliding part 731 capable of being driven by the backrest seat 63 to radially move in the supporting seat 61 when the backrest seat 63 rotates relative to the supporting seat 61, the sliding portion 731 is connected to an engaging portion 732 passing through the support base 61 and engaging with the second locking groove 71 and sliding in the second arc-shaped groove 72 when being disengaged from the second locking groove 71, and a third spring 74 capable of driving the sliding portion 731 to return is further disposed in the support base 61.

The backrest seat 63 is provided with a second driving inclined surface 632 which can drive the sliding part 731 to slide and disengage the engaging part 732 from the second locking groove 71 when the first locking means is unlocked and the backrest seat 63 rotates relative to the support base 61.

The seat assembly 6 is further connected to the front connecting seat 11, the seat assembly 6 comprises a supporting seat 61 rotatably connected with the front connecting seat 11 around a fourth axis D, a seat rod 62 is connected to the supporting seat 61, a backrest seat 63 is further rotatably connected to the supporting seat 61 around a fifth axis E, a backrest rod 64 is connected to the backrest seat 63, a first locking device for locking the backrest seat 63 and the supporting seat 61 is arranged between the backrest seat 63 and the supporting seat 61, a second locking device for locking the supporting seat 61 and the front connecting seat 11 is arranged between the supporting seat 61 and the front connecting seat 11, and a linkage piece capable of pulling the first spline 55 to be separated from the first clamping groove 54 in the upper connecting seat 31 when the second locking device is unlocked and the supporting seat 61 rotates relative to the front connecting seat 11 is connected to the second locking device.

The second locking device includes a second locking groove 71 disposed on the front connecting seat 11 and a second arc-shaped groove 72 communicated with the second locking groove 71, the supporting seat 61 is provided with a locking block 73 capable of moving in the radial direction therein, the locking block 73 includes a sliding part 731 capable of moving in the radial direction in the supporting seat 61 by being driven by the backrest seat 63 when the backrest seat 63 rotates relative to the supporting seat 61, the sliding part 731 is connected with a locking part 732 capable of passing through the supporting seat 61 and being locked with the second locking groove 71 and sliding in the second arc-shaped groove 72 when being disengaged from the second locking groove 71, the supporting seat 61 is further provided with a third spring 74 capable of driving the sliding part 731 to reset, the linkage member includes a hook part 81 disposed on the locking part 732, the first spline 55 is provided with a groove 82 capable of being hooked by the hook part 81, the first spline 55 is further provided with a hook part 732 capable of disengaging from the second locking groove 71 and rotating relative to the front connecting seat 11 81 to disengage the first spline 55 from the first locking groove 54 of the front connecting seat 11.

A second locking device for locking the rear connecting seat 21 and the front connecting seat 11 is arranged between the two connecting seats, the second locking device comprises a longitudinal sliding groove 91 arranged on the front connecting seat 11, a second clamping groove 92 is arranged on the rear connecting seat 21, a clamping block 93 which can be clamped with the second clamping groove 92 is slidably connected in the longitudinal sliding groove 91, the rear connecting seat 21 is further provided with a first arc-shaped groove 94 which is communicated with the second slot 92 and can allow the clamping block 93 to move inwards when the clamping block 93 is separated from the second slot 92, a driving block 95 which can rotate relative to the front connecting seat 11 is arranged on the outer side of the front connecting seat, a first driving inclined surface 96 which can push the clamping block 93 to withdraw from the second clamping groove 92 when the driving block 95 rotates is arranged on the driving block, the front connecting seat 11 is further provided with a second spring 97 which can keep the clamping block 93 in the second clamping groove 92 when the stroller is unfolded.

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

1. the utility model discloses a be equipped with in the preceding connecting seat and prop up the piece, when the baby carriage converts to the expansion state in-process from fold condition, go up the relative preceding branch of branch and rotate the expansion, at this in-process, the drive division in the connecting seat then promotes the upper end of propping open the pole, make the back connecting seat on the lower extreme promotion back branch of propping open the pole, thereby make the relative preceding branch of back branch rotate the expansion, therefore, as long as it expandes just can drive the relative preceding branch of back branch simultaneously to go up the relative preceding branch of branch, and then make the baby carriage remove to the expansion state, make the very convenient and fast of expansion operation of baby carriage, need not go alone to pull back branch with the hand. Moreover, the opening piece is arranged in the front connecting seat and is not exposed, so that the child stroller is very simple and compact.

2. The utility model discloses an upper strut moves when positive position from reverse displacement, guide inclined plane makes preceding drive rod shift up and in the past recess enter into the arcwall face, the front spring is compressed this moment, locking device unblock before the preceding stay cord on the drive rod then stimulates before this in-process, in case preceding locking device unblock, the front wheel subassembly just can be before the pivot be 360 degrees rotations of center pin, when upper strut reachs positive position, the back spring then resets and pushes back horizontal pole on the back drive rod into the back recess in, the back drive rod moves down, the back drive rod is no longer applyed pulling force to back locking device, thereby make back locking device with back wheel subassembly and back wheel seat locking, the back wheel fork can not be after the pivot be the center pin universal rotation. Therefore, when the upper support rod moves from the reverse position to the forward position, the front locking device is unlocked and the rear locking device is locked, so that the stroller can be pushed forward freely, and when the upper support rod moves from the forward position to the reverse position, the front locking device is locked and the rear locking device is unlocked, so that the stroller can be pushed backward freely. The utility model discloses utilize last branch to control the removal of preceding drive rod and back drive rod at the distance difference that rotates the in-process production, and then locking device and back locking device's unblock and locking before the control, control simple structure, design benefit.

3. The utility model discloses a when the relative supporting seat of back seat rotates foldingly, the back seat can promote the sliding part and slide and make the second closure groove on block portion and the preceding connecting seat break away from, consequently, when the relative supporting seat of back seat rotates, the connecting seat rotates before the supporting seat also can be relative to make the seat subassembly folding while the whole relative preceding strut rotation of seat subassembly draw close, realize the linkage. And, when the supporting seat rotated before relatively, the portion of colluding on the sliding part also can stimulate first spline lateral shifting and make connecting seat and preceding connecting seat unblock, realize promptly that go up branch and preceding branch can rotate relatively, therefore, when children's shallow needs folding, as long as first locking device unblock and back pole rotate the folding time of seat pole relatively can realize going up branch and preceding branch unblock, in case go up branch and preceding branch unblock, it just can rotate folding relatively preceding branch to go up the branch, upwards mention the drive block at last, just can make drive block drive back branch and preceding branch unblock and make preceding branch and back branch draw close together to realize that whole children's shallow is folding.

[ description of the drawings ]

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

fig. 2 is a side view of the upper support rod of embodiment 1 of the present invention in the reverse direction;

figure 3 is a side view of the components of embodiment 1 of the invention in a folded state;

fig. 4 is an enlarged view of the present invention at F in fig. 3;

fig. 5 is one of exploded views of components of the present invention;

fig. 6 is a second exploded view of the components of the present invention;

fig. 7 is a schematic view of the upper support rod of the present invention in the reverse orientation;

fig. 8 is one of the schematic views of the upper support rod of the present invention in the normal position;

fig. 9 is a second schematic view of the upper support rod of the present invention in the forward position;

fig. 10 is a third exploded view of the components of the present invention;

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

fig. 12 is a schematic view of the upper support rod of embodiment 2 of the present invention in the reverse direction;

fig. 13 is a schematic view of the upper support rod of embodiment 2 of the present invention in the normal position;

fig. 14 is a perspective view of a seat assembly of embodiment 2 of the present invention;

FIG. 15 is an enlarged view at G of FIG. 14;

figure 16 is one of the exploded views of the components of embodiment 2 of the invention;

fig. 17 is a second exploded view of the components of embodiment 2 of the present invention;

fig. 18 is a third exploded view of the components of embodiment 2 of the present invention;

fig. 19 is a fourth exploded view of the components of embodiment 2 of the present invention;

fig. 20 is a sectional view of a part of embodiment 2 of the present invention.

[ detailed description ] embodiments

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

example 1:

as shown in fig. 1 to 11, a stroller comprises a front rod 1 having a front connecting seat 11 and a rear rod 2 having a rear connecting seat 21, wherein the rear connecting seat 21 and the front connecting seat 11 are rotatably connected around a first axis a, the lower ends of the front rod 1 and the rear rod 2 are respectively provided with a front wheel assembly 12 and a rear wheel assembly 22, the stroller further comprises an upper rod 3 having an upper connecting seat 31, the upper connecting seat 31 and the front connecting seat 11 are rotatably connected around a second axis B, the positions where the upper rod 3 can stay include a folding position when being close to the front rod 1 and an unfolding position when being unfolded relative to the front rod 1, a supporting member 4 capable of supporting the rear rod 2 close to the front rod 1 when the upper rod 3 moves from the folding position to the unfolding position is arranged in the front connecting seat 11, the supporting member 4 comprises a supporting rod 41, one end of which is rotatably connected with the rear connecting seat 21 around a third axis C, the other end of the opening rod 41 is movably connected with a driving part 42 in the upper connecting seat 31. When the children's shallow removed to the expansion state from fold condition, go up branch 3 and remove to the expansion position from folding position, in this process, go up the upper end that the drive division 42 in the connecting seat 31 then promoted prop out pole 41, make the lower extreme of propping out pole 41 promote back connecting seat 21, and then make back branch 2 branch 1 rotation expansion before relatively, therefore, as long as go up branch 3 branch 1 expansion before relatively just can drive back branch 2 branch 1 expansion before relatively simultaneously, and then make children's shallow remove to the expansion state, make children's shallow expand operation convenient and fast very, need not go to pull back branch with the hand alone. Moreover, the opening member 4 is disposed inside the front connecting seat 11 without being exposed, so that the stroller is very compact. In this embodiment, a flexible seat bag (not shown) is hooked to the upper support rod 3, and a child can sit in the seat bag.

As shown in fig. 2, 7 and 8, the unfolding position includes a reverse position capable of pushing the stroller in a reverse direction and a forward position capable of pushing the stroller in a forward direction after the upper support rod 3 rotates relative to the front connecting seat 11, and when the upper support rod 3 moves from the folding position to the reverse position, the supporting member 4 supports the rear support rod 2 relative to the front support rod 1 so that the stroller is in the unfolding state. The children's shallow has backward direction and forward direction, and when last branch was in forward direction, children in the children's shallow faced same direction with the adult who carries out the children's shallow, and when last branch was in backward direction, children in the children's shallow were face-to-face with the adult who carries out the children's shallow, was convenient for interdynamic.

As shown in fig. 3 and 4, a sliding block 51 capable of sliding longitudinally in the upper connecting seat 31 is arranged in the upper connecting seat 31, a pushing part 52 capable of pushing the sliding block 51 to move transversely when the sliding block 51 slides longitudinally is further arranged between the sliding block 51 and the upper connecting seat 31, a transverse shaft 43 is arranged at the upper end of the opening rod 41, the driving part 42 is a guide surface which is arranged on the sliding block 51 and can be matched with the end part of the transverse shaft 43 in a sliding manner, and an opening groove 53 which is connected with the guide surface and can be engaged with the transverse shaft 43 when the upper support rod 3 moves to the reverse direction or the forward direction is further arranged on the sliding block 51. When the upper supporting rod 3 moves from the folded position to the unfolded position, the sliding block 51 moves longitudinally and transversely, the guide surface slides relative to the end part of the transverse shaft 43 and pushes the transverse shaft 43, so that the opening rod 41 pushes the rear supporting rod 2 to rotate and unfold, and when the upper supporting rod 3 rotates to the unfolded position, the transverse shaft 43 is clamped into the open slot 53, so that the opening rod 41 is positioned and locked.

As shown in fig. 5 and 6, the pushing portion 52 includes a protrusion 521 provided on the upper connecting seat 31 and having an inclined surface, the sliding block 51 is provided with a second passive inclined surface 522 matched with the protrusion 521, the sliding block 51 is provided with a second pulling cable 57 capable of pulling the sliding block to slide, and the upper connecting seat 31 is further provided with a second elastic resetting member 58 capable of pushing the sliding block 51 to reset.

As shown in fig. 5 and 6, a first locking device for locking the front connecting seat 11 and the upper connecting seat 31 is disposed in a space defined by the front connecting seat 11 and the upper connecting seat 31, the first locking device includes a first locking groove 54 circumferentially disposed on the front connecting seat 11 and the upper connecting seat 31, a first spline 55 capable of being engaged with the first locking groove 54 of the front connecting seat 11 and the upper connecting seat 31 is disposed in the space defined by the front connecting seat 11 and the upper connecting seat 31, one side of the first spline 55 is abutted against and matched with the sliding block 51 so that the sliding block 51 can push the first spline 55 to be disengaged from the first locking groove 54 of the upper connecting seat 31 when sliding relative to the upper connecting seat 31, and a first spring 56 capable of pushing the first spline 55 to return is disposed between the other side of the first spline 55 and the front connecting seat 11. When the first spline 55 is engaged with the first engaging groove 54 on the front connecting seat 11 and the upper connecting seat 31 at the same time, the upper connecting seat 31 and the front connecting seat 11 are locked with each other, when the upper supporting rod 3 needs to be switched between the forward position and the reverse position, or the upper supporting rod 3 needs to be moved to the folding position, the second pulling cable 57 is pulled, when the sliding block 51 slides longitudinally, the second passive inclined plane 522 on the sliding block 51 is pushed by the protrusion 521, the sliding block 51 moves transversely, the open slot 53 is disengaged from the transverse shaft 43, and the sliding block 51 pushes the first spline 55 to be disengaged from the first engaging groove 54 on the upper connecting seat 31.

As shown in fig. 5 and 6, a second locking device for locking the rear connecting seat 21 and the front connecting seat 11 is disposed between the rear connecting seat 21 and the front connecting seat 11, the second locking device includes a longitudinal sliding slot 91 disposed on the front connecting seat 11, a second locking slot 92 is disposed on the rear connecting seat 21, a locking block 93 capable of being locked with the second locking slot 92 is slidably connected to the longitudinal sliding slot 91, the rear connecting seat 21 is further provided with a first arc-shaped slot 94 communicated with the second locking slot 92 and capable of allowing the locking block 93 to move inside when the locking block 93 is separated from the second locking slot 92, a driving block 95 capable of rotating relative to the front connecting seat 11 is disposed on the outer side of the front connecting seat 11, the driving block 95 is further connected with a flexible lifting belt 98, the driving block 95 is provided with a first driving inclined surface 96 capable of pushing the locking block 93 to exit from the second locking slot 92 when the driving block 95 rotates, and the front connecting seat 11 is further provided with a driving inclined surface 96 capable of keeping the locking block 93 in the second locking slot 92 when the stroller is in an unfolded state A second spring 97. When the stroller needs to be folded, the sliding block 51 is pulled first, so that the first spline 55 moves laterally to be separated from the first locking groove 54 on the upper connecting seat 31, and then the upper support rod 3 is rotated to be close to the front support rod 1. Then lift lifting belt 98 upwards for drive block 95 rotates, first drive inclined plane 96 on drive block 95 just can push block 93 and withdraw from in second draw-in groove 92, in case withdraw from, back branch 2 and preceding branch 1 just unblock, and at the in-process of lifting upwards, because of the effect of gravity, back branch 2 just draws close on preceding branch 1, finally realizes folding of whole children's shallow.

As shown in fig. 1 to 3, the upper support 3 is further connected with a handle bar 36 capable of extending and retracting relative thereto. The handle rod 36 is convenient for adults to push the baby stroller, and when the baby stroller is folded, the handle rod 36 is firstly retracted into the upper support rod 3.

As shown in fig. 5 to 11, the front wheel assembly 12 is rotatably connected to the front wheel seat 13 at the lower end of the front strut 1 through the front pivot 121, the rear wheel assembly 22 is rotatably connected to the rear wheel seat 23 at the lower end of the rear strut 2 through the rear pivot 221, a front locking device 14 for orienting the front wheel fork 122 is provided between the front wheel seat 13 and the front wheel fork 122 of the front wheel assembly 12, a rear locking device 24 for orienting the rear wheel fork 222 is provided between the rear wheel seat 23 and the rear wheel fork 222 of the rear wheel assembly 22, a front transmission member 15 for unlocking the front locking device 14 when the upper strut 3 moves from the reverse displacement to the forward position and locking the front locking device 14 when the upper strut 3 moves from the forward displacement to the reverse position is provided in the front connecting seat 11, a rear locking device 24 when the upper strut 3 moves from the reverse displacement to the forward position is provided in the rear connecting seat 21, and unlocking the rear locking device 24 when the upper strut 3 moves from the forward displacement to the reverse position The rear transmission part 25, the front transmission part 15 includes a front transmission rod 152 having a front cross bar 151 and a rear transmission rod 252 having a rear cross bar 251, the upper connecting seat 31 is provided with an arc-shaped surface 32 capable of sliding-fitting with the front cross bar 151 and the rear cross bar 251, the upper connecting seat 31 is further provided with a front groove 33 capable of allowing the front cross bar 151 to fall and a rear groove 34 capable of allowing the rear cross bar 251 to fall, a guide inclined surface 35 capable of sliding-fitting with the front cross bar 151 and the rear cross bar 251 to make the front transmission rod 152 and the rear transmission rod 252 slide up and down relative to the upper connecting seat 31 when the upper support rod 3 is switched between a reverse position and a forward position is arranged between the front transmission rod 152 and the front locking device 14, a front pull rope 16 capable of pulling the front locking device 14 to be unlocked is arranged between the rear transmission rod 252 and the rear locking device 24, a rear pull rope 26 capable of pulling the rear locking device 24 to be unlocked is arranged between the rear transmission rod 252 and the rear locking device 24, the front connecting seat 11 is further provided with a front spring 153 capable of sliding and resetting the front driving rod 152 downwards and a rear spring 253 capable of sliding and resetting the rear driving rod 252 downwards. When the upper support rod 3 moves from the reverse direction to the forward direction, the guide inclined surface 35 pushes the front cross bar 151, so that the front transmission rod 152 moves upwards to enter the arc-shaped surface 32 from the front groove 33, at the same time, the front spring 153 is compressed, in the process, the front pull rope 16 on the front transmission rod 152 pulls the front locking device 14 to unlock, once the front locking device is unlocked, the front wheel assembly 12 can rotate 360 degrees by taking the front pivot shaft 121 as a central shaft, when the upper support rod 3 reaches the forward direction, the rear spring 253 resets to push the rear cross bar 251 on the rear transmission rod 252 into the rear groove 34, the rear transmission rod 252 moves downwards, the rear transmission rod 252 does not exert pulling force on the rear locking device 24 any more, so that the rear locking device 24 locks the rear wheel assembly 22 with the rear wheel seat 23, and the rear wheel fork 222 cannot rotate universally by taking the rear pivot shaft 221 as the central shaft. Therefore, when the upper pole 3 is moved from the reverse position to the forward position, the front lock device 14 is unlocked and the rear lock device 24 is locked, the stroller can be pushed freely in the forward direction, and when the upper pole 3 is moved from the forward position to the reverse position, the front lock device 14 is locked and the rear lock device 24 is unlocked, the stroller can be pushed freely in the reverse direction. Therefore, the distance difference generated by the upper support rod 3 in the rotating process is used for controlling the movement of the front transmission rod 152 and the rear transmission rod 252, and further controlling the unlocking and locking of the front locking device 14 and the rear locking device 24, and the control structure is simple and the design is ingenious. The front 14 and rear 24 locking devices may be provided by pin and hole engagement in conventional configurations, again not described in detail.

Example 2:

as shown in fig. 12 to 20, embodiment 2 differs from embodiment 1 in that:

the front connecting seat 11 is further connected with a seat assembly 6, the seat assembly 6 comprises a supporting seat 61 rotatably connected with the front connecting seat 11 around a fourth axis D, the supporting seat 61 is connected with a seat rod 62, the supporting seat 61 is further rotatably connected with a backrest seat 63 around a fifth axis E, the backrest seat 63 is connected with a backrest rod 64, a first locking device for locking the backrest seat 63 and the supporting seat 61 is arranged between the backrest seat 63 and the supporting seat 61, a second locking device for locking the supporting seat 61 and the front connecting seat 11 is arranged between the supporting seat 61 and the front connecting seat, the second locking device comprises a second locking groove 71 arranged on the front connecting seat 11 and a second arc-shaped groove 72 communicated with the second locking groove 71, a locking block 73 capable of radially moving in the supporting seat 61 is arranged in the supporting seat 61, the locking block 73 comprises a sliding part 731 capable of being driven by the backrest seat 63 to radially move in the supporting seat 61 when the backrest seat 63 rotates relative to the supporting seat 61, the sliding portion 731 is connected to an engaging portion 732 passing through the support base 61 and engaging with the second locking groove 71 and sliding in the second arc-shaped groove 72 when being disengaged from the second locking groove 71, and a third spring 74 capable of driving the sliding portion 731 to return is further disposed in the support base 61. When the stroller needs to be folded, the first locking device is unlocked, the backrest rod 64 is rotated, the backrest seat 63 rotates relative to the support seat 61, in the process, the backrest seat 63 pushes the sliding part 731 to slide radially, the clamping part 732 withdraws from the second locking groove 71 on the front connection seat 11 and enters the second arc-shaped groove 72, and therefore once the backrest rod 64 rotates relative to the seat rod 61 to be folded, the whole seat assembly and the front connection seat 11 are unlocked, the whole seat assembly rotates relative to the front support rod 1 to be drawn close, and the folding of the stroller is achieved.

As shown in fig. 18 and 20, the backrest seat 63 is provided with a second driving inclined surface 60 which can drive the sliding part 731 to slide and disengage the engaging part 732 from the second locking groove 71 when the first locking means is unlocked and the backrest seat 63 is rotated relative to the support base 61.

The second locking device is connected with a linkage piece which can pull the first spline 55 to be separated from the first clamping groove 54 on the upper connecting seat 31 when the second locking device is unlocked and the supporting seat 61 rotates relative to the front connecting seat 11. Therefore, when the backrest rod 64 rotates and folds relative to the seat rod 61 and the seat rod 61 rotates relative to the front connecting seat 11 and approaches the front support rod 1, the linkage piece enables the upper connecting seat 31 and the front connecting seat 11 to be unlocked, even if the upper support rod 3 is in a state capable of rotating relative to the front support rod 1, so that the seat assembly and the unlocking of the upper support rod 3 and the front support rod 1 are in linkage action, and the folding operation convenience of the baby stroller is improved. In the present embodiment, the fourth axis D, the fifth axis E and the first axis a coincide.

As shown in fig. 15 and 16, the linkage member includes a hook portion 81 disposed on the engaging portion 732, the first spline 55 is provided with a groove 82 that can be hooked by the hook portion 81, and the first spline 55 is further provided with a first passive inclined surface 83 that can be engaged with the hook portion 81 when the engaging portion 732 is disengaged from the second locking groove 71 and the support base 61 is rotated relative to the front connection base 11, so that the first spline 55 is disengaged from the first engaging groove 54 of the front connection base 11. When the sliding portion 731 slides radially, the engaging portion 732 disengages from the second locking groove 71, and the hook portion 81 disengages from the groove 82, when the support base 61 rotates relative to the front connection base 11, the hook portion 81 and the locking block 73 rotate together with the support base 61, the hook portion 81 slides along the first passive inclined surface 83, and the hook portion 83 pulls the first spline 55 to move laterally, thereby unlocking the upper connection base 31 from the front connection base 11.

As shown in fig. 14 and 18, the support base 61 is further connected with a grab rail seat 65, the grab rail seat 65 is connected with a grab rail 66, the grab rail seat 65 is provided with a bayonet 67 capable of being engaged with or disengaged from the sliding portion 731, and the grab rail seat is further provided with a circular hole 68 which is communicated with the bayonet and is capable of allowing the sliding portion 731 to move inside when the sliding portion 731 is disengaged from the bayonet 67. When the stroller is in the unfolded state, the slide portion 731 is engaged with the catch 67 to keep the grab bar 66 in the unfolded state, and when the back lever 64 is rotated and folded with respect to the seat lever 61, the slide portion 731 is slid out of the catch 67 to unlock the grab bar 71 from the support seat 61, so that the grab bar 66 can be rotated and folded.

As shown in fig. 18 to 20, the first locking means includes a plurality of first locking grooves 691 circumferentially provided on the backrest mount 63, a plurality of locking grooves 692 circumferentially provided on the support mount 61, a first locking pin 693 slidably provided in the first locking groove 691 and engageable with or disengageable from the locking groove 692, a first cable 694 slidably provided in the backrest lever 64 and adapted to pull the first locking pin 693 to slide, and a first elastic return member 695 for returning the first locking pin 693 to the rest position is provided in the backrest mount 63.

Claims (10)

1. A stroller, characterized in that: including preceding branch (1) that has preceding connecting seat (11) and back branch (2) that have back connecting seat (21), back connecting seat (21) and preceding connecting seat (11) around first axis (A) rotatable coupling, preceding branch (1) and back branch (2) lower extreme be equipped with front wheel subassembly (12) and back wheel subassembly (22) respectively, children's shallow still including last branch (3) that have last connecting seat (31), last connecting seat (31) and preceding connecting seat (11) around second axis (B) rotatable coupling, the position that upper branch (3) can stop include folding position when drawing close with preceding branch (1) and the position of expandeing when relative preceding branch (1) expandes, preceding connecting seat (11) in be equipped with in last branch (3) from folding position when moving to the position of expandeing can with the back branch (2) that front branch (1) drawn close strut struts strutting strut (4) open, the opening piece (4) comprises an opening rod (41) with one end rotatably connected with the rear connecting seat (21) around a third axis (C), and the other end of the opening rod (41) is movably connected with a driving part (42) in the upper connecting seat (31).

2. The stroller of claim 1, wherein: expand the position including the reverse position that can reverse the children's shallow of carrying out and can forward carry out children's shallow after connecting seat (11) rotate before last branch (3) is relative forward position, work as last branch (3) move to reverse position from folding position when, prop piece (4) prop back branch (2) relative preceding branch (1) and prop and open and make children's shallow be in the state of expanding.

3. The stroller of claim 2, wherein: go up connecting seat (31) in be equipped with can be in its longitudinal sliding's sliding block (51), sliding block (51) and last connecting seat (31) between still be equipped with push part (52) that can push sliding block (51) lateral shifting when its longitudinal sliding, the upper end of opening pole (41) be equipped with transverse shaft (43), drive division (42) for establishing on sliding block (51) and can with transverse shaft (43) tip sliding fit's guide face, sliding block (51) on still be equipped with the guide face meet and can with open slot (53) of transverse shaft (43) block when last branch (3) move to reverse direction or forward position.

4. The stroller of claim 3, wherein: a first locking device for locking the front connecting seat (11) and the upper connecting seat (31) is arranged in a space enclosed by the front connecting seat (11) and the upper connecting seat (31), the first locking device comprises a first clamping groove (54) which is arranged on the front connecting seat (11) and the upper connecting seat (31) along the circumferential direction, a space enclosed by the front connecting seat (11) and the upper connecting seat (31) is internally provided with a first spline (55) which can be clamped by a first clamping groove (54) on the front connecting seat and the upper connecting seat, one side of the first spline (55) is abutted and matched with the sliding block (51) so that the sliding block (51) can push the first spline (55) to be separated from the first clamping groove (54) on the upper connecting seat (31) when sliding relative to the upper connecting seat (31), a first spring (56) capable of pushing the first spline (55) to reset is arranged between the other side of the first spline (55) and the front connecting seat (11).

5. The stroller of claim 2, wherein: the front wheel assembly (12) is rotatably connected with a front wheel seat (13) at the lower end of the front support rod (1) through a front pivot (121), the rear wheel assembly (22) is rotatably connected with a rear wheel seat (23) at the lower end of the rear support rod (2) through a rear pivot (221), a front locking device (14) capable of orienting a front wheel fork (122) is arranged between the front wheel seat (13) and the front wheel fork (122) on the front wheel assembly (12), a rear locking device (24) capable of orienting a rear wheel fork (222) is arranged between the rear wheel seat (23) and the rear wheel fork (222) on the rear wheel assembly (22), a front transmission component (15) capable of unlocking the front locking device (14) when the upper support rod (3) moves from a reverse displacement to a forward position and capable of locking the front locking device (14) when the upper support rod (3) moves from the forward displacement to the reverse position is arranged in the front connection seat (11), the rear connecting seat (21) is internally provided with a rear transmission part (25) which can lock the rear locking device (24) when the upper support rod (3) moves to the forward position from the reverse displacement and can unlock the rear locking device (24) when the upper support rod (3) moves to the reverse position from the forward displacement, the front transmission part (15) comprises a front transmission rod (152) with a front cross rod (151) and a rear transmission rod (252) with a rear cross rod (251), the upper connecting seat (31) is provided with an arc-shaped surface (32) which can be in sliding fit with the front cross rod (151) and the rear cross rod (251), the upper connecting seat (31) is further provided with a front groove (33) which can allow the front cross rod (151) to fall and a rear groove (34) which can allow the rear cross rod (251) to fall into, and the front groove (33) and the rear groove (34) are arranged between the arc-shaped surface (32) and the upper support rod (3) can be in sliding fit with the front cross rod (151) and the rear cross rod (251) when the reverse position and the forward position are switched The front transmission rod (152) and the rear transmission rod (252) are opposite to a guide inclined plane (35) sliding up and down on the upper connecting seat (31), a front pull rope (16) which is used for connecting the front transmission rod (152) and the front locking device (14) and can pull the front locking device (14) to unlock is arranged between the front transmission rod (152) and the front locking device (14), a rear pull rope (26) which is used for connecting the front transmission rod (152) and the rear locking device (24) and can pull the rear locking device (24) to unlock is arranged between the rear transmission rod (252) and the rear locking device (24), and a front spring (153) which can enable the front transmission rod (152) to slide downwards and reset and a rear spring (253) which can enable the rear transmission rod (252) to slide downwards and reset are arranged in the front connecting seat (11).

6. The stroller of claim 1, wherein: the seat assembly (6) is further connected onto the front connecting seat (11), the seat assembly (6) comprises a supporting seat (61) which is rotatably connected with the front connecting seat (11) around a fourth axis (D), a seat lever (62) is connected onto the supporting seat (61), a backrest seat (63) is further rotatably connected onto the supporting seat (61) around a fifth axis (E), a backrest lever (64) is connected onto the backrest seat (63), a first locking device for locking the backrest seat (63) and the supporting seat (61) is arranged between the supporting seat (61) and the front connecting seat (11), a second locking device for locking the backrest seat (63) and the supporting seat (61) is arranged between the supporting seat (61) and the front connecting seat (11), the second locking device comprises a second locking groove (71) arranged on the front connecting seat (11) and a second arc-shaped groove (72) communicated with the second locking groove (71), the supporting seat (61) is internally provided with a locking block (73) capable of moving in the inner radial direction, the locking block (73) comprises a sliding part (731) which can be driven by the backrest seat (63) to move in the radial direction of the supporting seat (61) when the backrest seat (63) rotates relative to the supporting seat (61), the sliding part (731) is connected with a clamping part (732) which passes through the supporting seat (61) and is clamped with the second locking groove (71) and can slide in the second arc-shaped groove (72) when being separated from the second locking groove (71), and the supporting seat (61) is internally provided with a third spring (74) capable of driving the sliding part (731) to reset.

7. The stroller of claim 6, wherein: the backrest seat (63) is provided with a second driving inclined surface (632) which can drive the sliding part (731) to slide when the first locking device is unlocked and the backrest seat (63) rotates relative to the supporting seat (61) so as to enable the clamping part (732) to be separated from the second locking groove (71).

8. The stroller of claim 4, wherein: the front connecting seat (11) is also connected with a seat component (6), the seat component (6) comprises a supporting seat (61) which is rotatably connected with the front connecting seat (11) around a fourth axis (D), the supporting seat (61) is connected with a seat rod (62), the supporting seat (61) is also rotatably connected with a backrest seat (63) around a fifth axis (E), a backrest rod (64) is connected on the backrest seat (63), a first locking device for locking the backrest seat (63) and the supporting seat (61) is arranged between the backrest seat (63) and the supporting seat, a second locking device for locking the supporting seat (61) and the front connecting seat (11) is arranged between the supporting seat and the front connecting seat, and a linkage piece which can pull the first spline (55) to be separated from the first clamping groove (54) on the upper connecting seat (31) when the second locking device is unlocked and the supporting seat (61) rotates relative to the front connecting seat (11) is connected to the second locking device.

9. The stroller of claim 8, wherein: the second locking device comprises a second locking groove (71) arranged on the front connecting seat (11) and a second arc-shaped groove (72) communicated with the second locking groove (71), a locking block (73) capable of moving in the radial direction is arranged in the supporting seat (61), the locking block (73) comprises a sliding part (731) which can be driven by the backrest seat (63) to move in the radial direction in the supporting seat (61) when the backrest seat (63) rotates relative to the supporting seat (61), the sliding part (731) is connected with a clamping part (732) which penetrates through the supporting seat (61) and is clamped with the second locking groove (71) and can slide in the second arc-shaped groove (72) when being separated from the second locking groove (71), a third spring (74) capable of driving the sliding part (731) to reset is also arranged in the supporting seat (61), and the linkage part comprises a hook part (81) arranged on the clamping part (732), the first spline (55) is provided with a groove (82) which can be hooked by a hook part (81), and the first spline (55) is further provided with a first passive inclined surface (83) which can be matched with the hook part (81) when the clamping part (732) is separated from the second locking groove (71) and the supporting seat (61) rotates relative to the front connecting seat (11) so that the first spline (55) is separated from a first clamping groove (54) on the front connecting seat (11).

10. The stroller of claim 1, wherein: a second locking device used for locking the rear connecting seat (21) and the front connecting seat (11) is arranged between the rear connecting seat (21) and the front connecting seat (11), the second locking device comprises a longitudinal sliding groove (91) arranged on the front connecting seat (11), a second clamping groove (92) is arranged on the rear connecting seat (21), a clamping block (93) capable of being clamped with the second clamping groove (92) is connected in the longitudinal sliding groove (91) in a sliding manner, a first arc-shaped groove (94) which is communicated with the second clamping groove (92) and can be used for moving the clamping block (93) when the clamping block (93) is separated from the second clamping groove (92) is also arranged on the rear connecting seat (21), a driving block (95) capable of rotating relative to the front connecting seat is arranged on the outer side of the front connecting seat (11), a first driving inclined surface (96) capable of pushing the clamping block (93) to exit from the second clamping groove (92) when the driving block (95) rotates is arranged on the driving block (95), and a second spring (97) which can keep the clamping block (93) in the second clamping groove (92) when the stroller is in an unfolded state is also arranged in the front connecting seat (11).

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