CN212243516U

CN212243516U - Baby carriage frame

Info

Publication number: CN212243516U
Application number: CN202021023696.7U
Authority: CN
Inventors: 刘晓伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-06-05
Filing date: 2020-06-05
Publication date: 2020-12-29
Anticipated expiration: 2030-06-05

Abstract

The utility model discloses a baby carriage frame, the foreleg rotates with the back leg to be connected, it is connected with preceding vaulting pole still to rotate on the back leg, preceding vaulting pole upper end is rotated and is connected with the handspike, and be equipped with between handspike and the back leg and rotate the back vaulting pole of being connected with the two, the back vaulting pole, the back leg, preceding vaulting pole and handspike constitute four-bar linkage, be equipped with drive assembly between hind leg and the foreleg, drive assembly includes that the one end hind leg rotates the back connecting rod of connecting and one end and foreleg and rotate the preceding connecting rod of being connected, and preceding connecting rod rotates with the back connecting rod to be connected, be equipped with the connecting seat that is used for connecting the seat subassembly on the preceding vaulting pole, be equipped with between connecting seat and the drive assembly with the two rotate be connected and can drive assembly when the relative back leg. The utility model discloses simple structure, folding convenient operation, folding back is small.

Description

Baby carriage frame

[ technical field ] A method for producing a semiconductor device

The utility model relates to a baby carriage frame.

[ background of the invention ]

Strollers are products that have become indispensable in the growth process of infants. Conventional strollers are generally capable of being unfolded or folded for easy carrying and storage. However, the conventional baby carriage is complex in structure, large in size after being folded, and still has room for improvement.

Therefore, the present invention is based on the above disadvantages.

[ Utility model ] content

The utility model aims at overcoming the defects of the prior art, and providing a baby carriage frame which has simple structure, convenient folding operation and small volume after being folded.

The utility model discloses a realize through following technical scheme:

a stroller frame movable from an unfolded position to a folded position after a locking device is unlocked, characterized in that: including preceding leg 1 that is connected with front wheel 1a and rear leg 2 that is connected with rear wheel 2a, preceding leg 1 rotate with rear leg 2 and be connected, rear leg 2 on still rotate and be connected with preceding

vaulting pole

3, 3 upper ends of preceding vaulting pole rotate and be connected with handspike 4 to be equipped with between handspike 4 and the rear leg 2 and rotate the back vaulting pole 5 of being connected with the two, back vaulting pole 5, rear leg 2, preceding vaulting pole 3 and handspike 4 constitute four-bar linkage, rear leg 2 and front leg 1 between be equipped with drive assembly 6, drive assembly 6 include that one end rear leg 2 rotates back connecting rod 61 of being connected and one end and front connecting rod 62 of being connected with front leg 1 rotation to preceding connecting rod 62 rotates with back connecting rod 61 to be connected, preceding vaulting pole 3 on be equipped with connecting seat 8 that is used for connecting seat subassembly 7, connecting seat 8 and drive assembly 6 between be equipped with the two and rotate to be connected and can drive assembly 6 when preceding vaulting pole 3 rotates folding relatively rear leg 2 to fold with the front leg 2 between preceding connecting rod 6 The legs 1 and the rear legs 2 rotate the link rods 9 which are close together.

The baby carriage frame is characterized in that: the linkage rod 9 comprises a first extension section 91 and a second extension section 92 bent relative to the first extension section 91, the first extension section 91 and the front support rod 3 are parallel to each other and are rotatably connected with the connecting seat 8, the second extension section 92 is rotatably connected with the transmission assembly 6, and the connecting seat 8 is provided with a containing groove 81 capable of containing the first extension section 91 when the baby carriage frame is folded.

The baby carriage frame is characterized in that: the seat assembly 7 comprises a connecting part 71 which can be detachably connected with the connecting seat 8, a seat part 72 and a backrest part 73 which can rotate relative to the connecting part 71 are connected on the connecting part 71, a first locking device 74 is arranged between the seat part 72 and the connecting part 71, and a second locking device 75 is arranged between the backrest part 73 and the connecting part 71.

The baby carriage frame is characterized in that: the seat portion 72 includes a seat plate 721, the first locking device 74 includes a locking block 741 capable of sliding in the seat plate 721, the connecting portion 71 is provided with a locking groove 742 capable of being engaged with the locking block 741, the seat plate 721 is provided with a pulling block 743 capable of sliding relative to the seat plate, a first pull rope 744 is provided between the pulling block 743 and the locking block 741, and a first return spring 745 capable of returning the locking block 741 is further provided in the seat plate 721.

The baby carriage frame is characterized in that: the seat plate 721 is connected with an annular seat 722, the annular seat 722 is connected with a front handle 76 capable of rotating relative to the annular seat, the lower end of the front handle 76 is provided with an engaging groove 746 capable of engaging with a locking block 741, when the locking block 741 engages with the engaging groove 746, the locking block 741 engages with the locking groove 742, and when the locking block 741 disengages from the engaging groove 746, the locking block 741 disengages from the locking groove 742.

The baby carriage frame is characterized in that: a positioning component capable of positioning the seat part 72 when the seat part 72 rotates to a set position relative to the connecting part 71 is further arranged between the seat part 72 and the connecting part 71, the positioning component comprises at least two positioning grooves 771 arranged on the annular seat 722, a positioning pin 772 capable of radially sliding in the connecting part 71 and matching with the positioning grooves 771 is arranged in the connecting part 71, and a second return spring 773 capable of pushing the positioning pin 772 to return is further arranged in the connecting part 71.

The baby carriage frame is characterized in that: the annular seat 722 is further provided with a release groove 723 into which the positioning pin 772 is inserted to release the second return spring 773 when the connecting portion 71 and the seat portion 72 are locked by the locking piece 741 and the locking groove 742.

The baby carriage frame is characterized in that: the lower end of the front armrest 76 is annular, and the inner wall thereof is provided with at least two positioning notches 761 capable of engaging with the positioning pin 772.

The baby carriage frame is characterized in that: the lower end of the front arm rest 76 and the annular seat 722 are located between the connecting portion 71 and the backrest portion 73, the second latch means 75 includes a first tooth groove 751 provided on the connecting portion 71 and a second tooth groove 752 provided on the lower end of the backrest portion 73, a gear 753 which can move transversely in the space enclosed by the connecting part 71 and the backrest part 73 and can be simultaneously engaged with the first tooth groove 751 and the second tooth groove 752 is arranged in the space, a rotatable rotating block 754 is arranged between the backrest part 73 and the gear 753, a plurality of inclined grooves 755 are arranged on the rotating block 754 along the circumferential direction, the backrest portion 73 is provided with a slant protrusion 756 which is engaged with the slant groove 755 when the rotary block 754 rotates to push the rotary block 754 to move laterally, a pull rope 757 is connected to the rotating block 754, a handle 758 capable of pulling the pull rope 757 is connected to the backrest 73, and a third return spring 759 is further arranged between the connecting portion 71 and the gear 753.

The baby carriage frame is characterized in that: an operation panel 781 capable of sliding up and down with respect to the connection portion 71, and a locking pin 782 which is driven by the operation panel 781 to move in the left and right directions of the stroller frame when the operation panel 781 slides up, a locking hole 82 which can be clamped with the locking pin 782 is arranged on the connecting seat 8, a fourth return spring 783 which can make the locking pin 782 return is also arranged in the connecting part 71, the connecting portion 71 is further provided with a moving plate 784 which is driven by the operating plate 781 to move in the front-rear direction of the stroller frame when the operating plate 781 slides upward, the moving plate 784 is provided with a clamping protrusion 785, the connecting seat 8 is provided with a plurality of positioning grooves 786 with openings at the upper end and capable of being matched with the clamping protrusion 785, a fifth return spring 787 capable of pushing the moving plate 784 to return is further arranged in the connecting portion 71, a seventh return spring 78b capable of pushing the operating plate 781 to slide downwards for return is further arranged in the connecting portion 71.

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

1. the utility model discloses when the baby carriage frame is folding, at first operate the unlocking of locking device, then promote forward and push down the handspike, the handspike lower extreme is close to the back leg lower extreme with back vaulting pole upper end and preceding vaulting pole upper end, and at this in-process, the linkage rod is pushed down to the preceding vaulting pole of rotating, and the linkage rod is then pushing down preceding connecting rod and back connecting rod to make the foreleg draw close to the hind leg, finally realize that the baby carriage frame is folding. The whole baby carriage frame is simple in structure, convenient to fold and operate and small in size after being folded.

2. The utility model discloses a gangbar includes the second extension section that first extension section and relative first extension section buckle, and first extension section is parallel to each other and rotates with the connecting seat with preceding vaulting pole and be connected, and the second extension section rotates with drive assembly to be connected, is equipped with on the connecting seat to accomodate the groove of accomodating of first extension section when baby carriage frame is folding. When the baby carriage frame is folded, the first extension section enters the containing groove to avoid interference and enable the baby carriage frame to be small in folding size, moreover, the first extension section is parallel to the front support rod, the containing groove does not need to be deeply arranged while the first extension section is guaranteed to be contained, the connecting seat can guarantee enough strength under the condition that the size is small, the material cost can be reduced, the product strength is improved, and the good product quality is ensured.

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

[ description of the drawings ]

FIG. 1 is a perspective view of the present invention with the seat assembly removed;

FIG. 2 is a side view of the present invention with the seat assembly removed;

FIG. 3 is one of the side views of the present invention with the seat assembly removed and during folding;

fig. 4 is a second side view of the present invention with the seat assembly removed and during folding;

FIG. 5 is a side view of the present invention with the seat assembly installed in a forward orientation;

FIG. 6 is a side view of the present invention with the seat assembly installed in a reverse orientation;

figure 7 is a perspective view of the seat assembly of the present invention;

fig. 8 is an exploded view of the seat assembly of the present invention;

figure 9 is a cross-sectional view of the seat assembly of the present invention;

FIG. 10 is an enlarged view at A of FIG. 1;

fig. 11 is one of the exploded views of the seat assembly of the present invention;

fig. 12 is a second exploded view of the seat assembly of the present invention;

fig. 13 is a third exploded view of the seat assembly of the present invention;

figure 14 is a fourth exploded view of the seat assembly of the present invention;

fig. 15 is a perspective view of a seat part of the present invention;

fig. 16 is a partial cross-sectional view of a seat portion of the present invention;

figure 17 is a side view of the seat assembly of the present invention in a deployed state;

figure 18 is a side view of the seat assembly of the present invention in an expanded condition with the attachment portion removed;

FIG. 19 is a side view of the seat assembly of the present invention in an expanded state with the attachment portions and front armrests removed;

figure 20 is a side view of the seat assembly of the present invention in a semi-deployed state;

figure 21 is a side view of the seat assembly of the present invention in a semi-deployed position with the attachment portion removed;

figure 22 is a side view of the seat assembly of the present invention in a semi-deployed position with the attachment portion and front armrest removed;

figure 23 is a side view of the seat assembly of the present invention in a folded condition;

figure 24 is a side view of the seat assembly of the present invention with the attachment portion removed and in a folded condition;

figure 25 is a side view of the seat assembly of the present invention in a folded condition with the attachment portion and front armrest removed;

fig. 26 is a perspective view of the connection seat of the present invention.

[ detailed description ] embodiments

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

as shown in fig. 1 to 6, a stroller frame capable of moving from a folded position to an unfolded position after a locking device is unlocked, comprising a front leg 1 connected with a front wheel 1a and a rear leg 2 connected with a rear wheel 2a, wherein the front leg 1 is rotatably connected with the rear leg 2, the rear leg 2 is further rotatably connected with a front stay 3, the upper end of the front stay 3 is rotatably connected with a push rod 4, a rear stay 5 rotatably connected with the push rod 4 and the rear leg 2 is arranged between the push rod 4 and the rear leg 2, the rear stay 5, the rear leg 2, the front stay 3 and the push rod 4 form a four-bar mechanism, a transmission assembly 6 is arranged between the rear leg 2 and the front leg 1, the transmission assembly 6 comprises a rear link 61 with one end rotatably connected with the rear leg 2 and a front link 62 with one end rotatably connected with the front leg 1, the front link 62 is rotatably connected with the rear link 61, the front stay 3 is provided with a connecting seat 8 for connecting a seat assembly 7, a linkage rod 9 which is rotatably connected with the connecting seat 8 and the transmission component 6 and can drive the transmission component 6 to drive the front leg 1 and the rear leg 2 to rotate and approach when the front supporting rod 3 rotates and folds relative to the rear leg 2 is arranged between the connecting seat 8 and the transmission component 6. When the baby carriage frame is folded, the locking device is operated to unlock, the hand push rod 4 is pushed forwards and pressed downwards, the lower end of the hand push rod 4, the upper end of the rear support rod 5 and the upper end of the front support rod 3 are close to the lower end of the rear leg 2, the rotating front support rod 3 presses the linkage rod 9 downwards, and the linkage rod 9 presses the front connecting rod 62 and the rear connecting rod 61 downwards, so that the front leg 1 is close to the rear leg 2, and finally the folding of the baby carriage frame is realized. The whole baby carriage frame is simple in structure, convenient to fold and operate and small in size after being folded. The locking device of the stroller frame can adopt a traditional locking structure, and the details are not repeated.

As shown in fig. 1, 2, 4 and 26, the linkage rod 9 includes a first extension segment 91 and a second extension segment 92 bent relative to the first extension segment 91, the first extension segment 91 and the front stay 3 are parallel to each other and rotatably connected to the connecting base 8, the second extension segment 92 is rotatably connected to the transmission assembly 6, and the connecting base 8 is provided with a receiving groove 81 capable of receiving the first extension segment 91 when the stroller frame is folded. When the baby carriage frame is folded, the first extension section 91 enters the containing groove 81 to avoid interference and enable the baby carriage frame to be small in folding volume, moreover, the first extension section 91 is parallel to the front support rod 3, so that the containing groove 81 does not need to be deeply arranged when the first extension section 91 is ensured to be contained, and therefore the connecting seat 8 can keep enough strength under the condition that the volume is small, the material cost can be reduced, the product strength is improved, and good product quality is ensured.

As shown in fig. 5, 6, 8, 13 and 16, the seat assembly 7 includes a connecting portion 71 detachably connected to the connecting portion 8, the connecting portion 71 is connected to a seat portion 72 and a backrest portion 73 capable of rotating relative thereto, a first latch device 74 is disposed between the seat portion 72 and the connecting portion 71, and a second latch device 75 is disposed between the backrest portion 73 and the connecting portion 71. The connecting part 71 is detachably connected with the connecting seat 8, so that the seat assembly 7 can be reversed, and a user can adjust the sitting direction of an infant according to the requirement. Furthermore, the seat part 72 and the backrest part 73 can rotate relative to the connecting part 71, so that the seat assembly 7 can be folded, and the volume of the folded baby carriage frame is small. When folding, the seat assembly 7 is folded, and then the handle bar 4 is pushed forward and pressed downward.

As shown in fig. 13, 15 and 16, the seat portion 72 includes a seat plate 721, the first locking device 74 includes a locking block 741 capable of sliding in the seat plate 721, the connecting portion 71 is provided with a locking groove 742 capable of being engaged with the locking block 741, the seat plate 721 is provided with a pulling block 743 capable of sliding relative to the seat plate, a first pulling rope 744 is provided between the pulling block 743 and the locking block 741, and the seat plate 721 is further provided with a first return spring 745 capable of returning the locking block 741. When the seat assembly 7 needs to be folded, the pulling block 743 is pulled below the seat plate 721, the locking block 741 is pulled by the first pulling rope 744, so that the locking block 741 is separated from the locking slot 742 on the connecting portion 71, and at this time, the seat plate 721 can be rotated relative to the connecting portion 71.

As shown in fig. 13 and 14, the seat plate 721 is connected with a ring-shaped seat 722, the ring-shaped seat 722 is connected with the front handle 76 capable of rotating relative to the ring-shaped seat, the lower end of the front handle 76 is provided with an engaging slot 746 capable of engaging with the locking block 741, the locking block 741 engages with the locking slot 742 when the locking block 741 engages with the engaging slot 746, and when the locking block 741 disengages from the engaging slot 746, the locking block 741 disengages from the locking slot 742 to ensure that the front handle 76 can rotate and fold relative to the connecting portion 71 when the seat portion 72 rotates and folds relative to the connecting portion 71.

As shown in fig. 13 and 14, a positioning member capable of positioning the seat portion 72 when the seat portion 72 rotates to a set position relative to the connecting portion 71 is further disposed between the seat portion 72 and the connecting portion 71, the positioning member includes at least two positioning grooves 771 disposed on the annular seat 722, a positioning pin 772 capable of sliding radially in the connecting portion 71 and cooperating with the positioning grooves 771 is disposed in the connecting portion 71, a second return spring 773 capable of pushing the positioning pin 772 to return is further disposed in the connecting portion 71, a release groove 723 capable of allowing the positioning pin 772 to insert and releasing the second return spring 773 when the connecting portion 71 and the seat portion 72 are locked and locked with the locking groove 742 through a locking block 741, the lower end of the front armrest 76 is annular, and at least two positioning notches 761 capable of engaging with the positioning pin 772 are disposed on the inner wall. As shown in fig. 17 to 19, when the seat assembly 7 is in the unfolded state, the latch 741 engages with the latch slot 742 and the latch slot 746, the positioning pin 772 is located in the positioning notch 761 of the front armrest 76 and the release slot 723 of the ring seat 722, and the positioning pin 772 is located in the release slot, so that the second return spring 773 can be in a natural state, thereby preventing the second return spring 773 from being compressed for a long time and losing its effect in the unfolded state of the seat assembly 7, and ensuring the quality of the product. When the seat assembly 7 needs to be folded, as shown in fig. 20 to 22, the pulling block 743 is pulled to disengage the locking block 741 from the locking groove 742 and the engaging groove 746, so that the seat plate 721 can be rotated, during the rotation, the groove wall of the releasing groove 723 pushes the positioning pin 772 to extrude the positioning pin 772 from the releasing groove 723, when the seat plate 721 rotates to a set angle, the positioning pin 772 enters one of the positioning grooves 771, the seat assembly 7 is in a half-unfolded state, and during the process, the front armrest 76 does not rotate relative to the connecting portion 71. The seat unit 7 is set in a half-unfolded state because the frame of the stroller can be smoothly folded when the seat unit 7 is reversely mounted on the stroller, and thus a user feels comfortable. When the seat assembly 7 is reversely mounted on the stroller, the seat assembly 7 is folded by rotating the seat plate 721 upward to make the seat assembly 7 in a half-unfolded state and then rotating the backrest 73 forward, i.e. when the seat assembly 7 is folded, the seat plate 721 and the backrest 73 are respectively rotated in opposite directions by a certain angle to reach a folded position, so that the seat assembly 7 can be smoothly approached to the rear legs 2 by the seat plate 721 when the push rod is rotated forward and pressed down after the seat assembly 7 is folded, thereby preventing the impact force generated by the sudden approach of the seat assembly 7, if the seat assembly 7 is not rotated toward the seat plate 721 when the push rod 4 is folded, the impact force is generated to the user's wrist when the rear legs 2 of the seat assembly 7 are drawn close because the backrest 73 and the push rod 4 are far apart (as shown in fig. 5), uncomfortable for the user and therefore the provision of at least two detents 771 on the annular seat 722 to provide a semi-deployed state for the seat assembly 7 solves this problem and allows the user to operate the pushchair comfortably when the seat assembly 7 is installed in the reverse orientation. When the seat assembly 7 is forwardly mounted on the stroller (as shown in fig. 6), since the backrest portion 73 itself is close to the handle bar 4, even if the seat plate 721 is rotated to the fully folded position of the seat assembly 7 at a time when the seat assembly 7 is folded, no impact is generated when the handle bar 4 is subsequently rotated and folded. As shown in fig. 23 to 25, during one rotation of the seat plate 721 to the fully folded position of the seat assembly 7, the detent 772 snaps into the other detent 771, and the seat plate 721 pushes the front arm rest 76 during the rotation, so that the detent 772 moves from one detent 761 to the other detent 761 of the front arm rest 76, thereby achieving the full folding of the seat assembly 7. Therefore, when the locking pieces 741 are disengaged from the engaging

slots

746 and 742, the seat plate 721 and the front handle bar 76 can be rotated to fold the seat assembly 7, and the engagement of the positioning pins 772 with the positioning slots 771 and the positioning notches 761 maintains the folded state of the seat assembly 7, so that the user can have free hands to rotate and press the handle bar 4 to fold the stroller smoothly.

As shown in fig. 13 and 14, the lower end of the front arm rest 76 and the ring-shaped seat 722 are located between the connecting portion 71 and the backrest portion 73, the second latch means 75 includes a first tooth groove 751 provided on the connecting portion 71 and a second tooth groove 752 provided on the lower end of the backrest portion 73, a gear 753 which can move transversely in the space enclosed by the connecting part 71 and the backrest part 73 and can be simultaneously engaged with the first tooth groove 751 and the second tooth groove 752 is arranged in the space, a rotatable rotating block 754 is arranged between the backrest part 73 and the gear 753, a plurality of inclined grooves 755 are arranged on the rotating block 754 along the circumferential direction, the backrest portion 73 is provided with a slant protrusion 756 which is engaged with the slant groove 755 when the rotary block 754 rotates to push the rotary block 754 to move laterally, a pull rope 757 is connected to the rotating block 754, a handle 758 capable of pulling the pull rope 757 is connected to the backrest 73, and a third return spring 759 is further arranged between the connecting portion 71 and the gear 753. The rotating handle 758 can pull the rotating block 754 to rotate through a pulling rope 757, during the rotation process, the inclined protrusion 756 is matched with the inclined groove 755 on the rotating block 754 to push the rotating block 754 to move transversely, the rotating block 754 pushes the gear 753 to move transversely, the gear 753 is separated from the second tooth socket 752 on the backrest 73, at this time, the backrest 73 can be rotated, and a user can rotate the backrest 73 backwards or forwards, so that the backrest 73 and the seat 72 have a proper included angle, and the sitting comfort of the infant is ensured.

The second gear 752 is a ratchet gear groove which enables the backrest 73 to rotate freely forward after the first latch 74 is unlocked, so that the handle 758 does not need to be operated when the backrest 73 rotates forward to reduce the angle between the backrest 73 and the seat 72, thereby making the operation more convenient and faster. However, the lower end of the backrest part 73 is provided with an arc-shaped notch groove 731 in a circumferential direction, and when the first locking device 74 is locked, one end of the arc-shaped notch groove 731 abuts against the locking piece 741 to prevent the backrest part 73 from rotating forward. Therefore, when the locking piece 741 is engaged with the locking slot 742, the slot wall of the arc-shaped notch 731 abuts against the locking piece 741, which is the minimum angle between the backrest 73 and the seat 72, and the backrest 73 cannot be rotated forward, but only the backrest 73 can be rotated backward. When the seat plate 721 is rotated to the half-unfolded state of the seat assembly 7, the arc-shaped notch groove 731 no longer abuts against the locking piece 741, and the backrest 73 can be operated to rotate forward for folding, so that the stroller can be folded smoothly when the seat assembly 7 is installed reversely.

As shown in fig. 14 and 18, a protruding shaft 732 passing through a gear 753 is provided at the lower end of the backrest part 73, a rib 733 is provided on the protruding shaft 732, and an arc-shaped receding groove 750 capable of engaging with the rib 753 is provided on the gear 753 and the rotating block 754. When the backrest part 73 is rotated forwards for a certain angle to enable the gear 753 to completely slide out of the protruding shaft 732, the end part of the convex rib 733 can abut against the end surface of the gear 753, so that the gear 753 and the second tooth socket 752 on the backrest part 73 are kept in a disengaged state, at the moment, the backrest part 73 can be freely rotated forwards and the backrest part 73 can be freely rotated backwards, and an operation handle 758 is not needed when the backrest part 73 is rotated backwards, so that the operation is more convenient and faster.

As shown in fig. 10 to 12, the connecting portion 71 is connected to an operation plate 781 capable of sliding up and down relative thereto and a locking pin 782 capable of being driven by the operation plate 781 to move in the left and right directions of the stroller frame when the operation plate 781 slides up, a locking hole 82 which can be clamped with the locking pin 782 is arranged on the connecting seat 8, a fourth return spring 783 which can make the locking pin 782 return is also arranged in the connecting part 71, the connecting portion 71 is further provided with a moving plate 784 which is driven by the operating plate 781 to move in the front-rear direction of the stroller frame when the operating plate 781 slides upward, the moving plate 784 is provided with a clamping protrusion 785, the connecting seat 8 is provided with a plurality of positioning grooves 786 with openings at the upper end and capable of being matched with the clamping protrusion 785, a fifth return spring 787 capable of pushing the moving plate 784 to return is further arranged in the connecting portion 71, a seventh return spring 78b capable of pushing the operating plate 781 to slide downwards for return is further arranged in the connecting portion 71. When the seat assembly 7 is removed from the connecting holder 8, the operating plate 781 is simply pulled upward to disengage the locking pins 782 from the locking holes 82 of the connecting holder 8, and the seat assembly 7 is unlocked from the connecting holder 8, and the seat assembly 7 can be lifted upward and removed. And in the process that the operating plate 781 moves upwards, the operating plate 781 also drives the moving plate 784 to move, in the moving process, the clamping protrusions 785 move into the other positioning grooves 786 from one positioning groove 786, the position of the operating plate 781 can be positioned, even if the operating plate 781 is released, the operating plate 781 cannot return downwards due to the clamping of the clamping protrusions 785 and the positioning grooves 786, at the moment, the operating plate 781 can be released, and the front side and the rear side of the seat assembly 7 are held by hands to take out the seat assembly 7, so that the operation is more convenient when the seat assembly 7 is taken out.

As shown in fig. 11, the locking pin 782 is provided with a first inclined surface 788, and the operating plate 781 is provided with a second inclined surface 789 which cooperates with the first inclined surface 788 to push the locking pin 782 to move when the operating plate 781 moves upward.

As shown in fig. 11, the moving plate 784 is provided with an inclined hole 780, and the operating plate 781 is provided with a driving shaft 78a inserted into the inclined hole 780 to push the moving plate 784 to move when the operating plate 781 moves upward.

As shown in fig. 5 to 7, the sunshade frame 10 is connected to the backrest portion 73 so as to be slidable up and down. The sunshade canopy 10 can slide up and down along the backrest portion 73, and therefore, when the seat unit 7 is in the unfolded state, the canopy 10 can be raised high, thereby making it possible to better shade the sun, and also to provide a wide space for the infant and prevent the infant from feeling oppressed. When the stroller frame is folded, the sunshade frame 10 can be lowered to prevent the sunshade frame 10 from deforming due to touching the ground after the stroller frame is folded.

As shown in fig. 8 and 9, the backrest portion 73 is provided with a slide rail 734 having a T-shaped cross section, the sunshade canopy 10 includes a slide seat 101 and a canopy rod 102 connected to the slide seat 101, and the slide seat 101 is provided with a slide groove 103 capable of engaging with the slide rail 734. The T-shaped slide rail 734 is engaged with the slide groove 103, so that the sunshade frame 10 can slide smoothly up and down.

As shown in fig. 9, the slide rail 734 is provided with a plurality of clamping grooves 735, the sliding seat 101 is provided with a clamping pin 104 capable of sliding therein and clamping with the clamping grooves 735, and the sliding seat 101 is further provided with a sixth return spring 105 capable of pushing the clamping pin 104 to return. When sunshade canopy frame 10 moves to suitable position, can make sunshade canopy frame 10 location through the block of joint round pin 104 with joint groove 735, the structure is very simple, when the position of sunshade canopy frame 10 needs to be adjusted, then the pulling joint round pin 104 and make joint groove 104 withdraw from in the joint groove 735 can.

As shown in fig. 9, the groove wall of the clamping groove 735 between the first clamping groove 735 and the last clamping groove 735 is an inclined surface from top to bottom along the backrest portion 73, so that the sliding seat can slide freely when being pulled or pushed. Therefore, when the position of the sunshade shed frame 10 needs to be adjusted, only a certain upward pulling force or downward pushing force needs to be applied, and the clamping pin 104 does not need to be pulled, so that the height adjustment of the sunshade shed frame 10 is very convenient and fast.

The groove wall on the first clamping groove 735 and close to the upper end side of the backrest 73 is a plane perpendicular to the slide rail 734 from top to bottom along the backrest 73, so that when the sunshade shed frame 10 reaches the clamping groove 735 at the uppermost end, even if an upward pulling force is applied, the sunshade shed frame 10 is not pulled out from the slide rail 734, and thus, the sunshade shed frame 10 is prevented from being pulled upwards and taken off due to overexertion when a user adjusts the height of the sunshade shed frame 10, and convenience is brought to the use. If the sunshade frame 10 needs to be disassembled, the latch pin 104 is pulled to withdraw the latch pin 104 from the uppermost latch groove 735, and then the sunshade frame 10 is lifted upwards.

Claims

1. A stroller frame movable from an unfolded position to a folded position after a locking device is unlocked, characterized in that: comprises a front leg (1) connected with a front wheel (1a) and a rear leg (2) connected with a rear wheel (2a), the front leg (1) is rotatably connected with the rear leg (2), the rear leg (2) is also rotatably connected with a front stay bar (3), the upper end of the front stay bar (3) is rotatably connected with a hand push bar (4), a rear stay bar (5) rotatably connected with the hand push bar (4) and the rear leg (2) is arranged between the hand push bar (4) and the rear leg (2), the rear stay bar (5), the rear leg (2), the front stay bar (3) and the hand push bar (4) form a four-bar mechanism, a transmission assembly (6) is arranged between the rear leg (2) and the front leg (1), the transmission assembly (6) comprises a rear connecting rod (61) rotatably connected with the rear leg (2) at one end and a front connecting rod (62) rotatably connected with the front leg (1) at one end, and the front connecting rod (62) is rotatably connected with the rear connecting rod (61), preceding vaulting pole (3) on be equipped with connecting seat (8) that are used for connecting seat subassembly (7), connecting seat (8) and drive assembly (6) between be equipped with the two rotate and be connected and can drive assembly (6) and drive preceding leg (1) and back leg (2) and rotate linkage rod (9) that draw close when relative back leg (2) of vaulting pole (3) rotate folding in the front.

2. The stroller frame of claim 1, wherein: the linkage rod (9) comprises a first extension section (91) and a second extension section (92) bent relative to the first extension section (91), the first extension section (91) is parallel to the front support rod (3) and is rotatably connected with the connecting seat (8), the second extension section (92) is rotatably connected with the transmission assembly (6), and the connecting seat (8) is provided with a containing groove (81) capable of containing the first extension section (91) when the baby carriage frame is folded.

3. A stroller frame according to claim 1 or 2, characterized in that: seat subassembly (7) including can dismantle connecting portion (71) of being connected with connecting seat (8), connecting portion (71) on be connected with seat portion (72) and back portion (73) that can rotate relatively, seat portion (72) and connecting portion (71) between be equipped with first kayser device (74), back portion (73) and connecting portion (71) between be equipped with second kayser device (75).

4. A stroller frame according to claim 3, characterized in that: seat portion (72) include bedplate (721), first kayser device (74) including can be in bedplate (721) gliding card locking piece (741), connecting portion (71) on be equipped with card locking groove (742) that can block with card locking piece (741), bedplate (721) on be equipped with and to its gliding pulling piece (743) relatively, pulling piece (743) and card locking piece (741) between be equipped with first stay cord (744), bedplate (721) in still be equipped with first reset spring (745) that can reset to card locking piece (741).

5. The stroller frame of claim 4, wherein: the seat plate (721) is connected with an annular seat (722), the annular seat (722) is connected with a front armrest (76) which can rotate relative to the annular seat, the lower end of the front armrest (76) is provided with a clamping groove (746) which can be clamped with a clamping and locking block (741), when the clamping and locking block (741) is clamped with the clamping groove (746), the clamping and locking block (741) is clamped with the clamping and locking groove (742), and when the clamping and locking block (741) is separated from the clamping and locking groove (746), the clamping and locking block (741) is separated from the clamping and locking groove (742).

6. The stroller frame of claim 5, wherein: a positioning component which can position the seat part (72) when the seat part (72) rotates to a set position relative to the connecting part (71) is further arranged between the seat part (72) and the connecting part (71), the positioning component comprises at least two positioning grooves (771) arranged on the annular seat (722), a positioning pin (772) which can slide in the connecting part in the radial direction and is matched with the positioning grooves (771) is arranged in the connecting part (71), and a second return spring (773) which can push the positioning pin (772) to return is further arranged in the connecting part (71).

7. The stroller frame of claim 6, wherein: the annular seat (722) is also provided with a release groove (723) which can be used for inserting the positioning pin (772) to release the second return spring (773) when the connecting part (71) and the seat part (72) are matched and locked with the locking groove (742) through the locking block (741).

8. The stroller frame of claim 7, wherein: the lower end of the front handrail (76) is annular, and the inner wall is provided with at least two positioning notches (761) which can be clamped with the positioning pin (772).

9. The stroller frame of claim 8, wherein: the lower end of the front handrail (76) and the annular seat (722) are positioned between the connecting part (71) and the backrest part (73), the second clamping and locking device (75) comprises a first toothed groove (751) arranged on the connecting part (71) and a second toothed groove (752) arranged at the lower end of the backrest part (73), a gear (753) which can transversely move in the space surrounded by the connecting part (71) and the backrest part (73) and can be simultaneously clamped with the first toothed groove (751) and the second toothed groove (752) is arranged in the space, a rotatable rotating block (754) is arranged between the backrest part (73) and the gear (753), a plurality of inclined grooves (755) are arranged on the rotating block (754) along the circumferential direction, an inclined protrusion (756) which can be matched with the inclined grooves (755) to push the rotating block (754) to transversely move is arranged on the backrest part (73), and the rotating block (754) is connected with 757), the backrest part (73) is connected with a handle (758) capable of pulling a pull rope (757), and a third return spring (759) is further arranged between the connecting part (71) and the gear (753).

10. A stroller frame according to claim 3, characterized in that: the baby stroller is characterized in that an operating plate (781) capable of sliding up and down relative to the connecting part (71) and a locking pin (782) capable of being driven by the operating plate (781) to move in the left-right direction of the stroller frame when the operating plate (781) slides upwards are connected to the connecting part (71), a locking hole (82) capable of being clamped with the locking pin (782) is formed in the connecting part (8), a fourth return spring (783) capable of resetting the locking pin (782) is further arranged in the connecting part (71), a moving plate (784) capable of being driven by the operating plate (781) to move in the front-back direction of the stroller frame when the operating plate (781) slides upwards is further arranged on the connecting part (71), clamping protrusions (785) are arranged on the moving plate (784), a plurality of positioning grooves (786) with openings at the upper ends and capable of being matched with the clamping protrusions (785) are formed in the connecting part (8), and a fifth return spring (787) capable of pushing the moving plate (784) to reset, and a seventh return spring (78b) capable of pushing the operating plate (781) to slide downwards for return is further arranged in the connecting part (71).