CN217074486U

CN217074486U - Children's shallow frame

Info

Publication number: CN217074486U
Application number: CN202220297717.7U
Authority: CN
Inventors: 廖整辉
Original assignee: Zhongshan Weiya Technology Co ltd
Current assignee: Zhongshan Weiya Technology Co ltd
Priority date: 2022-02-14
Filing date: 2022-02-14
Publication date: 2022-07-29
Anticipated expiration: 2032-02-14

Abstract

The utility model discloses a stroller frame, which comprises a foldable bottom support frame, wherein the bottom support frame comprises a first support frame and a second support frame, the bottom support frame is also connected with a push rod component, the push rod component is rotatably connected with the bottom support frame through a transverse connecting piece, a driving mechanism which can drive the first support frame and the second support frame to be drawn close and folded when the push rod component rotates and folds relative to the bottom support frame is arranged between the transverse connecting piece and the bottom support frame, the driving mechanism comprises a first driving piece which is rotatably connected with the first support frame and a second driving piece which is rotatably connected with the second support frame, the first driving piece and the second driving piece are rotatably connected, the driving mechanism also comprises a first rotating disc which is connected with the transverse connecting piece and can rotate along with the transverse connecting piece, a first driving rod is hinged on the first rotating disc and deviates from the rotating axis position thereof, the other end of the first transmission rod is rotationally connected with the first transmission piece. The utility model discloses simple structure, folding convenient operation.

Description

Children's shallow frame

[ technical field ] A method for producing a semiconductor device

The utility model relates to a children's shallow frame.

[ background of the invention ]

In the prior art, the foldable stroller frames are different in structure and folding principle, but many stroller frames are complex and have improved space.

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 stroller frame with simple structure and convenient folding operation.

The utility model discloses a realize through following technical scheme:

the utility model provides a children's shallow frame, includes folding bottom sprag frame 1, bottom sprag frame 1 include

first support frame

11 and 11 pivoted second support frames 12 of first support frame relatively,

first support frame

11 and 12 lower extremes of second support frame all be equipped with wheel 13, bottom sprag frame 1 on still be connected with push rod assembly 2, its characterized in that: the push rod component 2 is rotatably connected with the bottom support frame 1 through a transverse connecting piece 3 connected with the push rod component, a driving mechanism which can drive the first support frame 11 and the second support frame 12 to close and fold when the push rod component 2 rotates and folds relative to the bottom support frame 1 is also arranged between the transverse connecting component 3 and the bottom support frame 1, the driving mechanism comprises a first transmission piece 41 which is rotationally connected with the first support frame 11 and a second transmission piece 42 which is rotationally connected with the second support frame 12, and the first transmission member 41 and the second transmission member 42 are rotatably connected, said drive mechanism further comprising a first rotary disc 43 connected to the transverse link 3 and capable of following the rotation of the transverse link 3, the first rotating disk 43 is hinged with a first transmission rod 44 deviating from the rotating axis position, and the other end of the first transmission rod 44 is rotatably connected with the first transmission piece 41.

The transverse connecting piece 3 is also connected with a second rotating disc 45 which can rotate relative to the transverse connecting piece, the rotating direction of the second rotating disc 45 is opposite to the rotating direction of the first rotating disc 43, a second transmission rod 46 is hinged on the second rotating disc 45 and deviates from the rotating axis position, and the other end of the second transmission rod 46 is rotatably connected with the second transmission piece 42.

The transverse connecting piece 3 is also connected with a seat supporting seat 5 which can rotate relative to the transverse connecting piece and can be folded towards the bottom supporting frame 1, and the seat supporting seat 5 is connected with a foldable seat assembly 6.

The seat support seat 5 is provided with an abutting part 51, and the first transmission rod 44 is provided with a first pushing part 44a which can push the abutting part 51 to expand the seat support seat 5 in the expanding process of the push rod assembly 2 relative to the bottom support frame 1.

The transverse connecting piece 3 is further connected with a seat supporting seat 5 which can rotate forwards or backwards relative to the transverse connecting piece and can be folded towards the bottom supporting frame 1, the seat supporting seat 5 is connected with a seat assembly 6 which can be folded and can rotate relative to the seat supporting seat 5 to realize front and back reversing, the seat supporting seat 5 is provided with a propping part 51, the first transmission rod 44 is provided with a first pushing part 44a which can push the propping part 51 in the unfolding process of the push rod assembly 2 relative to the bottom supporting frame 1 so as to enable the seat supporting seat 5 which rotates forwards and is folded to rotate backwards and unfold, and the second rotating disc 45 is further provided with a second pushing part 45a which can push the propping part 51 in the unfolding process of the push rod assembly 2 relative to the bottom supporting frame 1 so as to enable the seat supporting seat 5 which rotates backwards and is folded to rotate forwards and unfold.

The seat assembly 6 and the seat supporting seat 5 are rotatably connected to enable the seat assembly 6 to be capable of reversing front and back, a control assembly capable of controlling the rotating and folding directions of the seat supporting seat 5 when the stroller frame is folded is arranged between the seat supporting seat 5 and the bottom supporting frame 1, when the seat assembly 6 faces the front and the stroller frame is folded, the control assembly controls the seat supporting seat 5 to rotate and fold forwards, and when the seat assembly 6 faces the back and the stroller frame is folded, the control assembly controls the seat supporting seat 5 to rotate and fold backwards.

The second support frame 12 comprises a left support frame 121 and a right support frame 122, the control assembly comprises a left arc-shaped groove 71 which is arranged on the left support frame 121 and extends along the rotating direction of the push rod assembly 2 and a right arc-shaped groove 72 which is arranged on the right support frame 122 and extends along the rotating direction of the push rod assembly 2, the seat support base 5 is connected with a left sliding pin 73 which can move in the left arc-shaped groove 71 and can abut against the groove wall of the left arc-shaped groove 71 to prevent the seat support base 5 from rotating forwards in a sliding manner, the seat support base 5 is connected with a right sliding pin 74 which can move in the right arc-shaped groove 72 and can abut against the groove wall of the right arc-shaped groove 72 to prevent the seat support base 5 from rotating backwards in a sliding manner, a left return spring 75 is arranged between the left sliding pin 73 and the seat support base 5, a right return spring 76 is arranged between the right sliding pin 74 and the seat support base 5, a yielding groove 77 which can be used for the left sliding pin 73 or the right sliding pin 74 to enter is arranged on the seat assembly 6, when the left sliding pin 73 enters the abdicating groove 77, the left sliding pin 73 is separated from the left arc-shaped groove 71 and the right sliding pin 74 is pressed into the right arc-shaped groove 72 by the seat assembly 6, and when the seat assembly 6 rotates and reverses relative to the seat support 5 to make the right sliding pin 74 enter the abdicating groove 77, the right sliding pin 74 is separated from the right arc-shaped groove 72 and the left sliding pin 73 is pressed into the left arc-shaped groove 71 by the seat assembly 6.

The lower end of the first transmission rod 44 is hinged to the middle of the first transmission member 41, and the lower end of the second transmission rod 46 is hinged to the middle of the second transmission member 42.

The transverse connecting piece 3 is also connected with a seat supporting seat 5 which can rotate forwards or backwards relative to the transverse connecting piece and can be folded towards the bottom supporting frame 1, the seat supporting seat 5 is connected with a seat component 6 which can be folded and can rotate relative to the seat supporting seat 5 to realize the forward and backward reversing, the locking device of the frame of the baby stroller comprises a first locking mechanism 81 arranged between the push rod component 2 and the second supporting frame 12, a second locking mechanism 82 which is unlocked by the first locking mechanism 81 and can be unlocked by the linkage of the rotating push rod component 2 when the push rod component 2 rotates relative to the bottom supporting frame 1 is arranged between the seat supporting seat 5 and the first supporting frame 11, when the seat component 6 faces forwards, the gravity center of the seat component 6 is positioned at the front side of the rotating axis of the push rod component 2 so that the seat supporting seat 5 and the seat component 6 can automatically rotate forwards and close to the bottom supporting frame 1 after the second locking mechanism 82 unlocks, when the seat assembly 6 is oriented rearward, the center of gravity of the seat assembly 6 is located rearward of the rotational axis of the push rod assembly 2 so that the second locking mechanism 82 unlocks the rear seat support 5 and the seat assembly 6 automatically rotates rearward toward the bottom bracket 1.

The first locking mechanism 81 comprises a plurality of inner locking grooves 811 arranged at the upper end of the second support frame 12 and arranged along the circumferential direction and a plurality of outer locking grooves 812 arranged at the lower end of the push rod assembly 2 and arranged along the circumferential direction, a space enclosed by the second support frame 12 and the push rod assembly 2 is internally provided with a first spline 813 capable of transversely moving and simultaneously clamping with the inner locking grooves 811 and the outer locking grooves 812, the push rod assembly 2 is internally provided with a first pushing piece 814 capable of pushing the first spline 813 to transversely move so as to separate the first spline 813 from the outer locking grooves 812, and a first return spring 815 capable of pushing the first spline 813 to return is further arranged between the second support frame 12 and the first spline 813;

the second locking mechanism 82 comprises a plurality of inner clamping grooves 821 arranged on the seat support base 5 along the circumferential direction and a plurality of outer clamping grooves 822 arranged on the upper end of the first support frame 11 along the circumferential direction, a second spline 823 capable of sliding in the space enclosed by the first support frame 11 and the seat support base 5 and clamping with the outer clamping grooves 822 and the inner clamping grooves 821 at the same time is arranged in the space, a second pushing piece 824 capable of pushing the second spline 823 to be separated from the outer clamping grooves 822 when the transverse connecting piece 3 rotates and folds relative to the bottom support frame 1 with the push rod assembly 2 is arranged on the transverse connecting piece 3, a second reset spring 825 capable of pushing the second spline 823 to reset is arranged between the seat support base 5 and the second spline 823, the second pushing piece 824 comprises a second pushing block 8241 which is abutted against the second spline 823 and can slide along the transverse connecting piece 3, the second pushing block 8241 is provided with a groove 8242 with an inclined plane, the transverse connecting piece 3 is further provided with a rotating seat 8243 capable of rotating along with the transverse connecting piece, and the rotating seat 8243 is provided with a protruding part 8244 which is matched with the groove 8242 and can push the second pushing block 8241 to transversely slide when the rotating seat 8243 rotates.

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

1. the utility model discloses children's shallow frame is when folding, rotate push rod subassembly forward, push rod subassembly then rotates with the relative bottom sprag frame of transverse connection spare on it together, at this in-process, first rotary disk then transverse connection spare rotates, first drive disk then promotes first transmission pole, first transmission pole then promotes the relative first support frame rotation of first transmission piece, first transmission piece then stimulates rather than the second driving medium of rotating the connection, the second driving medium then stimulates the second support frame, thereby realize that first support frame and second support frame rotate relatively and draw close, it is folding to realize children's shallow frame. The whole stroller frame is simple in structure and convenient to fold, and the first support frame and the second support frame can be drawn close only by rotating the push rod assembly to the first support frame.

2. The transverse connecting piece of the utility model is also provided with a second rotating disc which can rotate relative to the transverse connecting piece and has the rotation direction opposite to the rotation direction of the first rotating disc, and a second transmission rod which is hinged with the second rotating disc and deviates from the rotation axis position of the second rotating disc and is arranged between the second transmission piece and the second transmission piece, when the push rod component rotates forwards to be close to the first support frame, the first rotating disc rotates forwards and pushes the first transmission piece to rotate downwards relative to the first support frame through the first transmission rod, thereby pulling the second transmission piece to rotate downwards relative to the second support frame, leading the second support frame and the first support frame to be closed, in the process, the second transmission rod can pull the second rotating disc to rotate backwards, so that the unfolding state of the frame of the baby stroller is more stable, and the relative rotation of the first support frame and the second support frame is more smooth in the folding process.

3. The utility model discloses a seat supporting seat can rotate forward or rotate backward, and the direction of rotation of seat supporting seat can be controlled to the control assembly, and consequently, when the seat subassembly is towards the place ahead, control assembly control seat supporting seat and seat subassembly rotate forward, and when the seat subassembly is towards the rear, control assembly control seat supporting seat and seat subassembly rotate backward. Therefore, no matter how the orientation direction of the seat assembly is, the folding of the whole frame can be realized by rotating the push rod assembly forwards after the seat assembly is folded when the frame of the baby stroller is folded, and the folding operation of the traditional baby stroller is more convenient and faster because the seat assembly is adjusted to be folded towards the front when the frame is folded.

[ description of the drawings ]

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

FIG. 2 is a side view of the seat assembly of the present invention in a deployed position facing forward;

FIG. 3 is a side view of the seat assembly of the present invention in a deployed state, shown facing rearward;

FIG. 4 is a perspective view of the present invention with the seat assembly removed;

FIG. 5 is a side view of the present invention with the seat assembly removed;

FIG. 6 is a side view of the present invention in a folded configuration with the seat assembly removed;

FIG. 7 is a schematic view of the seat support of the present invention folded when the seat support is rotated forward;

FIG. 8 is a schematic view of the seat support of the present invention folded when it is folded back;

fig. 9 is one of exploded views of components of the present invention;

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

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

fig. 12 is a fourth exploded view of the components of the present invention;

fig. 13 is one of the partial cross-sectional views of the present invention;

fig. 14 is a second partial cross-sectional view of the present invention;

fig. 15 is a third partial sectional view of the present invention;

figure 16 is a bottom view of the seat assembly of the present invention;

figure 17 is a schematic view of the right slide pin with the seat assembly facing forward in accordance with the present invention;

figure 18 is a schematic view of the left slide pin with the seat assembly of the present invention facing forward;

figure 19 is a schematic view of the right slide pin with the seat assembly of the present invention facing rearward;

figure 20 is a schematic view of the left slide pin with the seat assembly of the present invention facing rearward;

fig. 21 is a perspective view of a component of the seat assembly of the present invention.

[ detailed description ] embodiments

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

as shown in fig. 4 to 6 and 10 to 15, a stroller frame comprises a foldable bottom support frame 1, wherein the bottom support frame 1 comprises a first support frame 11 and a second support frame 12 capable of rotating relative to the first support frame 11, wheels 13 are respectively arranged at the lower ends of the first support frame 11 and the second support frame 12, a push rod assembly 2 is further connected to the bottom support frame 1, the push rod assembly 2 is rotatably connected to the bottom support frame 1 through a transverse connecting member 3 connected thereto, a driving mechanism capable of driving the first support frame 11 and the second support frame 12 to be close to each other and folded when the push rod assembly 2 rotates and folds relative to the bottom support frame 1 is further arranged between the transverse connecting member 3 and the bottom support frame 1, the driving mechanism comprises a first transmission member 41 rotatably connected with the first support frame 11 and a second transmission member 42 rotatably connected with the second support frame 12, the driving mechanism further comprises a first rotating disk 43 connected with the transverse connecting piece 3 and capable of rotating along with the transverse connecting piece 3, a first driving rod 44 is hinged on the first rotating disk 43 and deviates from the rotating axis position, and the other end of the first driving rod 44 is rotatably connected with the first driving piece 41. The children's shallow frame is when folding, rotate push rod assembly 2 forward, push rod assembly 2 then rotates relative bottom support frame 1 together with transverse connection spare 3 on it, at this in-process, first rotary disk 43 then rotates along with transverse connection spare 3, first rotary disk 43 then promotes first drive rod 44, first drive rod 44 then promotes first drive piece 41 and rotates relative first support frame 11, first drive piece 41 then stimulates rather than the second driving medium 42 of being connected of rotating, second driving medium 42 then stimulates second support frame 12, thereby realize first support frame 11 and second support frame 12 relative rotation and draw close, realize that children's shallow frame is folding. The whole stroller frame is simple in structure and convenient to fold, and the first support frame 11 and the second support frame 12 can be drawn close only by rotating the push rod assembly 2 to the first support frame 11.

As shown in fig. 4 to 6 and fig. 10 to 15, a second rotating disc 45 capable of rotating relative to the transverse connecting member 3 is further connected to the transverse connecting member, the rotating direction of the second rotating disc 45 is opposite to the rotating direction of the first rotating disc 43, a second transmission rod 46 is hinged to the second rotating disc 45 and deviates from the rotating axial center position of the second rotating disc, and the other end of the second transmission rod 46 is rotatably connected to the second transmission member 42. When the push rod assembly 2 rotates forwards to be close to the first support frame 11, the first rotating disc 43 rotates forwards and pushes the first transmission piece 41 to rotate downwards relative to the first support frame 11 through the first transmission rod 44, so that the second transmission piece 42 is pulled to rotate downwards relative to the second support frame 12, the second support frame 12 and the first support frame 11 are close to each other, in the process, the second transmission rod 46 can pull the second rotating disc 45 to rotate backwards, the unfolding state of the stroller frame can be more stable, and in the folding process, the relative rotation of the first support frame 11 and the second support frame 12 is more smooth.

As shown in fig. 1 to 15, the transverse connecting member 3 is further connected with a seat supporting seat 5 which can rotate forwards or backwards relative to the transverse connecting member to be folded towards the bottom supporting frame 1, the seat support seat 5 is connected with a seat assembly 6 which can be folded and can rotate relative to the seat support seat 5 to realize the forward and backward reversing, the seat supporting seat 5 is provided with an abutting part 51, the abutting part 51 is a transverse shaft fixed on the seat supporting seat 5, the first transmission rod 44 is provided with a first pushing part 44a which can push the abutting part 51 to enable the seat supporting seat 5 which is rotated and folded forwards to rotate backwards and unfold in the unfolding process of the push rod component 2 relative to the bottom supporting frame 1, the second rotating disc 45 is further provided with a second pushing part 45a which can push the abutting part 51 to enable the seat supporting seat 5 which rotates backwards and is folded to rotate forwards and expand in the process that the push rod assembly 2 expands relative to the bottom supporting frame 1. When the seat assembly 6 is facing forward and the stroller frame is folded, the seat support 5 carries the folded seat assembly 6 to rotate forward to close up on the first support frame 11, at which point during deployment of the stroller frame, the push rod component 2 rotates relative to the bottom support frame 1, the first transmission rod 44 is pulled through the first rotating disc 43, thereby pulling the first transmission piece 41 and pushing the second transmission piece 42 through the first transmission piece 41, so as to realize the relative expansion of the first support frame 11 and the second support frame 12, in the process, the second transmission rod 46 pushes the second rotary disk 45 to rotate in the opposite direction to the first rotary disk 43, and the first pushing portion 44a of the first driving lever 44 will touch the abutting portion 51 pushing the seat supporting base 5, thereby pushing the seat support 5 to rotate relative to the transverse connecting piece 3, and realizing that the push rod component 2 automatically rotates and unfolds the seat support 5 in the process of rotating and unfolding. In the same way, when the seat assembly 6 faces backward and the stroller frame needs to be unfolded after being folded, the second pushing portion 45a of the second rotating disc 45 pushes the abutting portion 51 during the rotation of the push rod assembly 2, so that the seat support 5 automatically rotates and unfolds. Of course, instead of providing the seat support base 5 and the seat assembly 6, a flexible seat pocket may be directly attached to the push rod assembly 2, and the child may be seated in the seat pocket. In this embodiment, a seat support 5 and a seat assembly 6 are provided for more comfortable seating of the child. The foldable seat assembly 6 can be a seat assembly of a conventional folding structure, which will not be described in detail herein, and when the entire stroller frame is folded, the seat assembly 6 is folded first, and then the push rod assembly 2 is rotated to realize further folding.

As shown in fig. 13 to 15, the lower end of the first transmission rod 44 is hinged to the middle of the first transmission member 41, and the lower end of the second transmission rod 46 is hinged to the middle of the second transmission member 42, so that the stroller frame can be folded smoothly, and the unfolded state is stable and reliable.

As shown in fig. 9 to 12 and fig. 17 to 20, a control assembly for controlling the rotation and folding directions of the seat support 5 when the stroller frame is folded is provided between the seat support 5 and the bottom support 1, the control assembly controls the seat support 5 to rotate and fold forward when the seat assembly 6 faces forward and the stroller frame is folded, and controls the seat support 5 to rotate and fold backward when the seat assembly 6 faces backward and the stroller frame is folded. When the stroller frame is folded, the rotating direction of the seat supporting seat 5 can be controlled through the control assembly, so that the seat supporting seat 5 rotates and is folded towards the set direction, and the stroller frame is convenient to fold.

As shown in fig. 9 to 12 and fig. 17 to 20, the second support frame 12 includes a left support frame 121 and a right support frame 122, the control assembly 7 includes a left arc-shaped groove 71 provided on the left support frame 121 and extending along the rotation direction of the push rod assembly 2 and a right arc-shaped groove 72 provided on the right support frame 122 and extending along the rotation direction of the push rod assembly 2, the seat support 5 is slidably connected with a left sliding pin 73 capable of moving in the left arc-shaped groove 71 and abutting against the groove wall of the left arc-shaped groove 71 to prevent the seat support 5 from rotating forward, the seat support 5 is further slidably connected with a right sliding pin 74 capable of moving in the right arc-shaped groove 72 and abutting against the groove wall of the right arc-shaped groove 72 to prevent the seat support 5 from rotating backward, a left return spring 75 is provided between the left sliding pin 73 and the seat support 5, a right return spring 76 is provided between the right sliding pin 74 and the seat support 5, seat subassembly 6 on be equipped with and supply left slide pin 73 or right slide pin 74 to get into the groove 77 of stepping down, when left slide pin 73 gets into the groove 77 of stepping down, left slide pin 73 break away from and right slide pin 74 is impressed to right arc groove 72 by seat subassembly 6 with left arc groove 71, when seat subassembly 6 rotates the switching-over and makes right slide pin 74 get into the groove 77 of stepping down relatively to seat supporting seat 5, right slide pin 74 break away from and left slide pin 73 is impressed to left arc groove 71 by seat subassembly 6. When the seat assembly 6 faces forward, an adult pushing the stroller and a child in the seat assembly 6 face in the same direction, at this time, the left sliding pin 73 is separated from the left arc-shaped groove 71, the right sliding pin 74 falls into the right arc-shaped groove 72, the groove wall of the left arc-shaped groove 71 cannot block the left sliding pin 73, the groove wall of the right arc-shaped groove 72 can block the right sliding pin 74, at this time, the control assembly can prevent the seat support 5 from rotating backwards and ensure that the seat support 5 can only rotate forwards, when the stroller frame is folded, the seat support 5 rotates forwards, the right sliding pin 74 moves in the right arc-shaped groove 72 along the extending direction of the right arc-shaped groove 72, and the seat assembly 6 is enabled to be drawn forwards to the first support frame 11. When the seat assembly 6 is rotated to make the seat assembly 6 face backward, the adult pushing the stroller faces the child in the seat assembly 6, because the seat assembly 6 rotates relative to the seat support 5, the abdicating slot 77 originally engaged with the left sliding pin 73 moves to the position engaged with the right sliding pin 74, at this time, the left sliding pin 73 is pressed into the left arc-shaped slot 71, the right sliding pin 74 is pushed by the right return spring 76 to be disengaged from the right arc-shaped slot 72, at this time, the slot wall of the left arc-shaped slot 71 can abut against the left sliding pin 73, so as to prevent the seat support 5 from rotating forward, and therefore, when the stroller frame is folded, the seat support 5 can only rotate backward, so that the seat assembly 6 is subsequently drawn backward onto the second support frame 12. Therefore, when the frame of the baby stroller is folded, the control assembly automatically controls the rotating direction of the seat supporting seat 5 according to the orientation direction of the seat assembly 6, so that the defect that the seat assembly can be adjusted to be folded towards the front when the conventional baby stroller is folded is avoided, and the folding operation is more convenient and faster.

As shown in fig. 9 to 12, the locking device of the stroller frame includes a first locking mechanism 81 disposed between the push rod assembly 2 and the second support frame 12, and a second locking mechanism 82 disposed between the seat support base 5 and the first support frame 11 and capable of being unlocked by the linkage of the rotating push rod assembly 2 when the first locking mechanism 81 is unlocked and the push rod assembly 2 rotates relative to the bottom support frame 1. When the frame of the child stroller is folded, the first locking mechanism 81 is unlocked, then the push rod assembly 2 is rotated forwards, and the second locking mechanism 82 is unlocked in the rotating process of the push rod assembly 2, so that linkage unlocking is realized, and the folding operation is more convenient.

As shown in fig. 2 and 3, when the seat assembly 6 faces forward, the center of gravity of the seat assembly 6 is located at the front side of the rotation axis of the push rod assembly 2 so that the seat support 5 and the seat assembly 6 can automatically rotate forward and close to the bottom bracket 1 after the second locking mechanism 82 is unlocked, and when the seat assembly 6 faces rearward, the center of gravity of the seat assembly 6 is located at the rear side of the rotation axis of the push rod assembly 2 so that the seat support 5 and the seat assembly 6 can automatically rotate backward and close to the bottom bracket 1 after the second locking mechanism 82 is unlocked. Therefore, once the second locking mechanism 82 is unlocked, the seat support 5 can automatically rotate, and the seat support 5 can be folded by rotating without pushing the seat assembly 6, so that the frame folding operation is simple, convenient and quick.

As shown in fig. 9 to 12, the first locking mechanism 81 includes a plurality of inner locking grooves 811 disposed at the upper end of the second support frame 12 and arranged along the circumferential direction and a plurality of outer locking grooves 812 disposed at the lower end of the push rod assembly 2 and arranged along the circumferential direction, a first spline 813 capable of moving transversely therein and engaging with the inner locking grooves 811 and the outer locking grooves 812 simultaneously is disposed in a space defined by the second support frame 12 and the push rod assembly 2, a first pushing member 814 capable of pushing the first spline 813 to move transversely to disengage the first spline 813 from the outer locking grooves 812 is further disposed in the push rod assembly 2, a first return spring 815 capable of pushing the first spline 813 to return is further disposed between the second support frame 12 and the first spline 813, the push rod assembly 2 includes a lower push rod 21 having a bending portion 21a and an upper push rod 22 capable of sliding in the lower push rod 21, the transverse connecting piece 3 is connected to the lower push rod 21, the first pushing piece 814 comprises a first pushing block 8141 which abuts against the first spline 813 and can slide along the transverse connecting piece 3, an inclined push rod 8142 which is inclined and can push the first pushing block 8141 to transversely move is arranged in the bent portion 21a, and a pushing rod 8143 which can push the inclined push rod 8142 to slide when the upper push rod 22 retracts into the lower push rod 21 is arranged on the upper push rod 22; the second locking mechanism 82 comprises a plurality of inner clamping grooves 821 arranged on the seat support base 5 along the circumferential direction and a plurality of outer clamping grooves 822 arranged on the upper end of the first support frame 11 along the circumferential direction, a second spline 823 capable of sliding in the space enclosed by the first support frame 11 and the seat support base 5 and clamping with the outer clamping grooves 822 and the inner clamping grooves 821 at the same time is arranged in the space, a second pushing piece 824 capable of pushing the second spline 823 to be separated from the outer clamping grooves 822 when the transverse connecting piece 3 rotates and folds relative to the bottom support frame 1 with the push rod assembly 2 is arranged on the transverse connecting piece 3, a second reset spring 825 capable of pushing the second spline 823 to reset is arranged between the seat support base 5 and the second spline 823, the second pushing piece 824 comprises a second pushing block 8241 which is abutted against the second spline 823 and can slide along the transverse connecting piece 3, the second pushing block 8241 is provided with a groove 8242 with an inclined plane, the transverse connecting piece 3 is further provided with a rotating seat 8243 capable of rotating along with the transverse connecting piece, and the rotating seat 8243 is provided with a protruding part 8244 which is matched with the groove 8242 and can push the second pushing block 8241 to transversely slide when the rotating seat 8243 rotates. When the frame of the stroller needs to be folded, the upper push rod 22 is pushed downwards, the push rod 8143 pushes the inclined push rod 8142, the inclined push rod 8142 pushes the first push block 8141, the first push block 8141 pushes the first spline 813, so that the first spline 813 moves transversely and is separated from the outer locking groove 812 on the push rod assembly 2, at this time, the first return spring 815 is compressed, the first locking mechanism 81 is unlocked, at this time, the push rod assembly 2 can be rotated forwards, the push rod assembly 2 enables the first support frame 11 and the second support frame 12 to be close together through the driving mechanism in the rotating process, the push rod assembly 2 drives the rotating seat 8243 to rotate in the rotating process, the protrusion 8244 on the rotating seat 8243 pushes the inclined surface of the groove 8242 on the second push block 8241, so that the second push block 8241 moves transversely, the second push block 8241 pushes the second spline 823 to be separated from the outer locking groove 822 on the first support frame 11, when the second locking mechanism 82 is unlocked, the seat support 5 is rotated and folded in a set direction with the seat assembly 6 under the action of the control assembly. Therefore, when the whole stroller frame is folded, the whole stroller frame can be folded only by pushing the upper push rod 22 downwards and rotating the push rod assembly 2 forwards, and the operation is very convenient and fast.

As shown in fig. 21, the seat assembly 6 is further provided with a handle 91 which can be pulled out to lift the stroller frame when the stroller frame is folded, and a third return spring 92 is further provided between the handle 91 and the seat assembly 6. When the stroller is folded, the handle 91 can be pulled out for the user to lift the stroller or pull the stroller in the folded state. When the stroller is not lifted or pulled, the handle 91 is again received in the seat assembly 6 by the third return spring 92.

Claims

1. The utility model provides a children's shallow frame, includes folding bottom sprag frame (1), bottom sprag frame (1) including first support frame (11) and relative first support frame (11) pivoted second support frame (12), first support frame (11) and second support frame (12) lower extreme all be equipped with wheel (13), bottom sprag frame (1) on still be connected with push rod assembly (2), its characterized in that: the push rod assembly (2) is rotatably connected with the bottom support frame (1) through a transverse connecting piece (3) connected onto the push rod assembly, a driving mechanism which can drive the first support frame (11) and the second support frame (12) to be close to and folded when the push rod assembly (2) rotates and folds relative to the bottom support frame (1) is further arranged between the transverse connecting piece (3) and the bottom support frame (1), the driving mechanism comprises a first transmission piece (41) rotatably connected with the first support frame (11) and a second transmission piece (42) rotatably connected with the second support frame (12), the first transmission piece (41) is rotatably connected with the second transmission piece (42), the driving mechanism further comprises a first rotating disk (43) which is connected with the transverse connecting piece (3) and can rotate along with the transverse connecting piece (3), and a first transmission rod (44) is hinged on the first rotating disk (43) and deviates from the rotating axis position thereof, the other end of the first transmission rod (44) is rotationally connected with the first transmission piece (41).

2. The stroller frame of claim 1, wherein: the transverse connecting piece (3) is further connected with a second rotating disc (45) capable of rotating relative to the transverse connecting piece, the rotating direction of the second rotating disc (45) is opposite to that of the first rotating disc (43), a second transmission rod (46) is hinged to the second rotating disc (45) and deviates from the rotating axis position of the second rotating disc, and the other end of the second transmission rod (46) is rotatably connected with the second transmission piece (42).

3. The stroller frame of claim 1, wherein: the transverse connecting piece (3) is also connected with a seat supporting seat (5) which can rotate relative to the transverse connecting piece and can be folded towards the bottom supporting frame (1), and the seat supporting seat (5) is connected with a foldable seat assembly (6).

4. The stroller frame of claim 3, wherein: the seat supporting seat is characterized in that a supporting part (51) is arranged on the seat supporting seat (5), and a first pushing part (44a) which can push the supporting part (51) to enable the seat supporting seat (5) to be unfolded in the unfolding process of the push rod assembly (2) relative to the bottom supporting frame (1) is arranged on the first transmission rod (44).

5. The stroller frame of claim 2, wherein: the transverse connecting piece (3) is also connected with a seat supporting seat (5) which can rotate forwards or backwards relative to the transverse connecting piece and can be folded towards the bottom supporting frame (1), the seat supporting seat (5) is connected with a seat component (6) which can be folded and can rotate relative to the seat supporting seat (5) to realize the forward and backward reversing, the seat supporting seat (5) is provided with an abutting part (51), the first transmission rod (44) is provided with a first pushing part (44a) which can push the abutting part (51) in the unfolding process of the push rod component (2) relative to the bottom supporting frame (1) so as to enable the seat supporting seat (5) which is forwards rotated and folded to be backwards rotated and unfolded, the second rotating disc (45) is also provided with a second pushing part (45a) which can push the abutting part (51) in the unfolding process of the push rod component (2) relative to the bottom support frame (1) so as to enable the seat support seat (5) which is folded and rotated backwards to be unfolded forwards.

6. The stroller frame of claim 3, wherein: the foldable stroller is characterized in that the seat assembly (6) and the seat supporting seat (5) are rotatably connected to enable the seat assembly (6) to be capable of reversing front and back, a control assembly capable of controlling the rotating and folding direction of the seat supporting seat (5) when the stroller frame is folded is arranged between the seat supporting seat (5) and the bottom supporting frame (1), when the seat assembly (6) faces the front and the stroller frame is folded, the control assembly controls the seat supporting seat (5) to rotate and fold forward, and when the seat assembly (6) faces the rear and the stroller frame is folded, the control assembly controls the seat supporting seat (5) to rotate and fold backward.

7. The stroller frame of claim 6, wherein: the second support frame (12) comprises a left support (121) and a right support (122), the control assembly comprises a left arc-shaped groove (71) which is arranged on the left support (121) and extends along the rotating direction of the push rod assembly (2) and a right arc-shaped groove (72) which is arranged on the right support (122) and extends along the rotating direction of the push rod assembly (2), the seat support seat (5) is internally and slidably connected with a left sliding pin (73) which can move in the left arc-shaped groove (71) and can abut against the groove wall of the left arc-shaped groove (71) to prevent the seat support seat (5) from rotating forwards, the seat support seat (5) is also internally and slidably connected with a right sliding pin (74) which can move in the right arc-shaped groove (72) and can abut against the groove wall of the right arc-shaped groove (72) to prevent the seat support seat (5) from rotating backwards, and a left reset spring (75) is arranged between the left sliding pin (73) and the seat support seat (5), right side sliding pin (74) and seat supporting seat (5) between be equipped with right reset spring (76), seat subassembly (6) on be equipped with can supply left sliding pin (73) or right sliding pin (74) to get into groove of stepping down (77), when left sliding pin (73) get into groove of stepping down (77) in, left side sliding pin (73) break away from and right sliding pin (74) are impressed right arc wall (72) by seat subassembly (6) in, when seat subassembly (6) rotate the switching-over relatively seat supporting seat (5) and make right sliding pin (74) get into groove of stepping down (77) in, right sliding pin (74) break away from and left sliding pin (73) are impressed left arc wall (71) by seat subassembly (6).

8. A stroller frame according to claim 2 or 5, wherein: the lower end of the first transmission rod (44) is hinged to the middle of the first transmission piece (41), and the lower end of the second transmission rod (46) is hinged to the middle of the second transmission piece (42).

9. Stroller frame according to claim 1 or 2, characterized in that: transverse connection spare (3) on still be connected with and can rotate forward or backward and draw close folding seat supporting seat (5) to bottom sprag frame (1) relatively it, seat supporting seat (5) on be connected with collapsible and can rotate seat subassembly (6) that commutates around realizing relatively seat supporting seat (5), children's shallow frame's locking device including establishing first locking mechanical system (81) between push rod subassembly (2) and second support frame (12), seat supporting seat (5) and first support frame (11) between be equipped with and unlock at first locking mechanical system (81) and push rod subassembly (2) can be by the linkage unlocking of pivoted push rod subassembly (2) when rotating relative bottom sprag frame (1) second locking mechanical system (82), when seat subassembly (6) orientation the place ahead, the focus of seat subassembly (6) be located push rod subassembly (2) and rotate the front side of axle center and make second locking mechanical system (82) unblock The rear seat supporting seat (5) and the seat assembly (6) can automatically rotate forwards to be drawn close to the bottom supporting frame (1), and when the seat assembly (6) faces the rear direction, the gravity center of the seat assembly (6) is located on the rear side of the rotating shaft center of the push rod assembly (2) so that the second locking mechanism (82) can automatically rotate backwards to be drawn close to the bottom supporting frame (1) after the seat supporting seat (5) and the seat assembly (6) are unlocked.

10. The stroller frame of claim 9, wherein: the first locking mechanism (81) comprises a plurality of inner locking grooves (811) which are arranged at the upper end of the second support frame (12) and arranged along the circumferential direction and a plurality of outer locking grooves (812) which are arranged at the lower end of the push rod assembly (2) and arranged along the circumferential direction, a first spline (813) which can transversely move in the space defined by the second support frame (12) and the push rod assembly (2) and is simultaneously clamped with the inner locking grooves (811) and the outer locking grooves (812) is arranged in the space, a first pushing piece (814) which can push the first spline (813) to transversely move so that the first spline (813) is separated from the outer locking grooves (812) is further arranged in the push rod assembly (2), and a first reset spring (815) which can push the first spline (813) to reset is further arranged between the second support frame (12) and the first spline (813);

the second locking mechanism (82) comprises a plurality of inner clamping grooves (821) which are arranged on the seat supporting seat (5) and arranged along the circumferential direction and a plurality of outer clamping grooves (822) which are arranged at the upper end of the first supporting seat (11) and arranged along the circumferential direction, a second spline (823) which can slide in the space enclosed by the first supporting seat (11) and the seat supporting seat (5) and can be clamped with the outer clamping grooves (822) and the inner clamping grooves (821) simultaneously is arranged, a second pushing piece (824) which can push the second spline (823) to be separated from the outer clamping grooves (822) when the transverse connecting piece (3) rotates and folds relative to the bottom supporting frame (1) and is arranged on the push rod assembly (2), and a second reset spring (825) which can push the second spline (823) to reset is also arranged between the seat supporting seat (5) and the second spline (823), the second pushing piece (824) comprises a second pushing piece (8241) which abuts against the second spline (823) and can slide along the transverse connecting piece (3), a groove (8242) with an inclined plane is formed in the second pushing piece (8241), a rotating seat (8243) capable of rotating along the transverse connecting piece is further arranged on the transverse connecting piece (3), and a protruding portion (8244) which is matched with the groove (8242) and can push the second pushing piece (8241) to slide transversely when the rotating seat (8243) rotates is arranged on the rotating seat (8243).