CN210363995U

CN210363995U - Baby stroller frame

Info

Publication number: CN210363995U
Application number: CN201920490371.0U
Authority: CN
Inventors: 胡杰; 李伟
Original assignee: Dongguan Jinwang Children's Products Co ltd
Current assignee: Dongguan Jinwang Children's Products Co ltd
Priority date: 2019-04-10
Filing date: 2019-04-10
Publication date: 2020-04-21
Anticipated expiration: 2029-04-10

Abstract

The utility model discloses a baby stroller frame, which comprises a front support, a rear support, a bottom frame and a seat frame, wherein the lower end of the front support is rotatably connected with the bottom frame, the lower end of the rear support is rotatably connected with the bottom frame, the baby stroller frame also comprises a support rod, and a triangular frame is formed among the seat frame, the support rod and the rear support in the unfolding state; in the folding process, a quadrilateral frame is formed among the front support, the seat frame, the support rod and the rear support. The utility model discloses a triangle-shaped frame when expanding in the embodiment is more stable, can reduce rocking in the use. In the folding process, the quadrilateral frame is easy to fold and deform, and the bicycle is quickly folded.

Description

Baby stroller frame

Technical Field

The utility model relates to a baby's shallow's technical field especially relates to a baby's shallow frame.

Background

After the existing baby stroller frame is unfolded, the problems that a supporting structure is unstable and easy to shake exist generally.

Therefore, there is a need for a stroller frame that is stable in support and less prone to sway after deployment.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's not enough, provide a baby's shallow frame that the back support is stable, is difficult for rocking after expanding.

The technical proposal of the utility model provides a baby stroller frame, which comprises a front bracket, a rear bracket, a bottom bracket and a seat frame, wherein the lower end of the front bracket is rotatably connected with the bottom bracket, the lower end of the rear bracket is rotatably connected with the bottom bracket,

also comprises a support rod which is arranged on the upper part of the frame,

when the seat is unfolded, a triangular frame is formed among the seat frame, the support rod and the rear bracket;

in the folding process, a quadrilateral frame is formed among the front support, the seat frame, the support rod and the rear support.

Furthermore, the upper end of the supporting rod is rotatably connected with the rear part of the seat frame, the lower end of the supporting rod is rotatably connected with the rear support, the upper end of the front support is rotatably connected with the middle part of the seat frame, and the upper end of the rear support can slide up and down along the front support.

Furthermore, the baby stroller frame further comprises a push rod and a sliding piece, the sliding piece is sleeved on the front support and can slide up and down along the front support, the lower end of the push rod is inserted into the sliding piece, and the upper end of the rear support is rotatably connected with the sliding piece.

Furthermore, a convex part is arranged on one side of the push rod facing the front support, when the push rod slides downwards for a section, the convex part is abutted against the upper end of the sliding part, and the push rod drives the sliding part to slide downwards together;

the lower extreme of push rod still is equipped with the end cap, and the expansion in-process, the push rod upwards slides, works as the end cap with when the lower extreme of slider is contradicted, the push rod drives the slider upwards slides together.

Furthermore, the baby stroller frame further comprises a handle, the lower end of the handle is fixedly connected with the upper end of the push rod, a locking joint is arranged between the front support and the push rod, the locking joint is installed in the sliding part, and an unlocking assembly is arranged on the handle;

when the front support is unfolded, the locking joint locks the front support and the push rod, and the push rod cannot slide along the front support;

the unlocking assembly can unlock the locking joint, and after unlocking, the push rod can slide downwards along the front support to fold the baby stroller frame.

Further, the seat frame is quadrilateral frame, the seat frame is used for installing the seat pocket, the seat pocket includes main pocket and vice pocket, main pocket is installed on the seat frame, vice pocket is collapsible be in the bottom of main pocket, vice pocket can expand downwards.

Furthermore, a combination component is arranged on the seat frame and used for installing the baby car safety seat.

Furthermore, the combination component comprises an insertion part and a buckling part, the insertion part is fixed with the infant safety seat frame, and the buckling part is fixed on the seat frame.

Furthermore, the baby stroller frame also comprises a sunshade shed frame, the sunshade shed frame comprises a first shed frame and a second shed frame, and the first shed frame is arranged at the downstream position of the second shed frame;

when the sunshade cloth is unfolded, the first shed frame rotates upwards, and the second shed frame rotates forwards and is used for unfolding the sunshade cloth.

Furthermore, the baby stroller frame further comprises a handle assembly, the upper end of the handle assembly can be clamped on the seat frame, and the lower end of the handle assembly is rotatably connected with the underframe.

After adopting above-mentioned technical scheme, have following beneficial effect:

in the utility model, when the baby stroller is in the unfolding state, a triangular frame is formed among the seat frame, the stay bar and the rear bracket; in the folding process, a quadrilateral frame is formed among the front support, the seat frame, the support rod and the rear support. The triangular frame is more stable when unfolded, and can reduce shaking in the using process. In the folding process, the quadrilateral frame is easy to fold and deform, and the bicycle is quickly folded.

Drawings

The disclosure of the present invention will become more readily understood by reference to the drawings. It should be understood that: these drawings are for illustrative purposes only and are not intended to limit the scope of the present disclosure. In the figure:

fig. 1 is a development view of a stroller frame according to a first embodiment of the present invention;

FIG. 2 is a view showing the other side of the stroller frame in an expanded state according to the first embodiment of the present invention;

fig. 3 is a state diagram of a baby stroller frame in the folding process according to a first embodiment of the present invention;

fig. 4 is a state view of the stroller frame according to the first embodiment of the present invention after being folded;

fig. 5 is a perspective view of a seat pocket mounted on a stroller frame according to a first embodiment of the present invention;

FIG. 6 is a state diagram of the stroller frame according to the first embodiment of the present invention after the secondary bag is unfolded;

FIG. 7 is an enlarged view of a portion of the bottom of the handle assembly according to an embodiment of the present invention;

FIG. 8 is an enlarged partial view of the top of the handle assembly in accordance with one embodiment of the present invention;

FIG. 9 is an enlarged view of a portion of the bottom back of the handle assembly in accordance with one embodiment of the present invention;

FIG. 10 is an enlarged partial view of the bottom side of the handle assembly in accordance with one embodiment of the present invention;

fig. 11 is a perspective view of an elastic tooth according to a first embodiment of the present invention;

fig. 12 is a perspective view of the tooth tip portion of the elastic tooth according to the first embodiment of the present invention;

fig. 13 is an enlarged view of the folded bottom of the stroller frame with the handle assembly according to the first embodiment of the present invention;

fig. 14 is a perspective view of a baby stroller frame with a baby safety seat mounted thereon according to a first embodiment of the present invention;

fig. 15 is a development state view of the stroller frame according to the second embodiment of the present invention.

Reference symbol comparison table:

front support 1, rear support 2, underframe 3 and seat frame 4

Brace 5 push rod 6 slider 7 pull assembly 8

Seat pocket 9 sunshade shed frame 10 handle 12 combination component 13

Unlocking assembly 14, wheel 15, tray 16 infant safety seat frame 17

End cap 61 of pedal assembly 18 infant car safety seat 19

Clasp 81 handle 82 connecting rod 83 swivel 84

Bracelet 88 with inner sleeve rod 86 and outer sleeve 87 of mounting rack 85

Unlocking piece 821 first locking part 831 second locking part 832

End cap 833 gear portion 841 extension piece 842 slot 843

Elastic tooth 851 mounting groove 852 tooth tip portion 851a positioning pin 851b

Tooth case

851c slide groove 851d sub-pocket 92 of main pocket 91

Buckling part 132 of plugging part 131 of first shelf 101 and second shelf 102

Detailed Description

The following describes the present invention with reference to the accompanying drawings.

It is easily understood that, according to the technical solution of the present invention, a plurality of structural modes and implementation modes that can be mutually replaced by those of ordinary skill in the art can be achieved without changing the spirit of the present invention. Therefore, the following detailed description and the accompanying drawings are only exemplary illustrations of the technical solutions of the present invention, and should not be construed as limiting or restricting the technical solutions of the present invention in its entirety or as a limitation of the present invention.

The terms of orientation of up, down, left, right, front, back, top, bottom, and the like referred to or may be referred to in this specification are defined relative to the configuration shown in the drawings, and are relative terms, and thus may be changed correspondingly according to the position and the use state of the device. Therefore, these and other directional terms should not be construed as limiting terms.

The first embodiment is as follows:

referring to fig. 1-14, the stroller frame according to an embodiment of the present invention is schematically illustrated.

As shown in fig. 1-2, the baby stroller frame comprises a front frame 1, a rear frame 2, a bottom frame 3 and a seat frame 4, wherein the lower end of the front frame 1 is rotatably connected with the bottom frame 3, the lower end of the rear frame 2 is rotatably connected with the bottom frame 3,

the upper end of the support rod 5 is rotatably connected with the rear part of the seat frame 4, the lower end of the support rod 5 is rotatably connected with the rear support 2, the upper end of the front support 1 is rotatably connected with the middle part of the seat frame 4, and the upper end of the rear support 2 can slide up and down along the front support 1;

when the seat is unfolded, a triangular frame is formed among the seat frame 4, the support rod 5 and the rear support 2;

in the folding process, the upper end of the rear support 2 slides downwards along the front support 1, and a quadrilateral frame is formed among the front support 1, the seat frame 4, the support rod 5 and the rear support 2.

Specifically, the front support 1 is two straight bars, the rear support 2 is also two straight bars, the bottom frame 3 is a frame structure located at the bottom of the baby stroller frame, the wheels 15 are respectively installed at four corners, and the front support 1 and the rear support 2 are respectively connected to the front side and the rear side of the bottom frame 3.

Wherein, the upper end of the front bracket 1 is rotatably connected with the middle part of the seat frame 4, and the upper end of the rear bracket 2 can slide up and down along the front bracket 1.

As shown in fig. 1, in the unfolded state, the upper end of the rear frame 2 is located close to or overlapped with a connection point between the upper end of the front frame 1 and the seat frame 4 in the left-right direction of the stroller frame. Therefore, a triangular frame is formed between the seat frame 4, the stay 5, and the rear bracket 2. The baby stroller frame is more stable when unfolded, and the shaking in the using process can be reduced.

As shown in fig. 3, during the folding process, the upper end of the rear bracket 2 slides down along the front bracket 1 such that the upper end of the rear bracket 2 is spaced apart from the connection point of the upper end of the front bracket 1 and the seat frame 4. A quadrilateral frame is formed among the front support 1, the seat frame 4, the support rods 5 and the rear support 2, so that the quadrilateral frame is easy to fold and deform in the folding process, and the bicycle can be folded quickly.

As shown in fig. 4, in order to completely fold the stroller, as the upper end of the rear frame 2 slides down along the front frame 1, the rear frame 2 is turned forward and downward, the front frame 1 is turned backward and downward, and the upper end of the stay 5 is also turned backward and downward, so that the seat frame 4 is lowered and brought close to the bottom frame 3.

Optionally, the front bracket 1 and the rear bracket 2 may not be straight bars, but may be bars with a certain radian or bending angle.

Further, as shown in fig. 1, the stroller frame further includes a push rod 6 and a sliding member 7, the sliding member 7 is sleeved on the front frame 1 and can slide up and down along the front frame 1, a lower end of the push rod 6 is inserted into the sliding member 7, and an upper end of the rear frame 2 is rotatably connected with the sliding member 7.

Wherein, the upper end of fore-stock 1 passes slider 7, and slider 7 cover is established on fore-stock 1 to can slide from top to bottom.

The upper end of the rear bracket 2 slides downwards and is driven by a push rod 6. When the folding bicycle is required to be folded, the push rod 6 is pushed downwards, the push rod 6 drives the sliding piece 7 to slide downwards along the front support 1, and the sliding piece 7 drives the upper end of the rear support 2 to slide downwards along the front support 1.

Further, as shown in fig. 3, a protruding member (not shown) is disposed on one side of the push rod 6 facing the front bracket 1, and when the push rod 6 slides downwards for a certain period, the protruding member abuts against an upper end of the sliding member 7, and the push rod 6 drives the sliding member 7 to slide downwards;

as shown in fig. 1, the lower end of the push rod 6 is further provided with an end cap 61, during the unfolding process, the push rod 6 slides upwards, and when the end cap 61 abuts against the lower end of the sliding member 7, the push rod 6 drives the sliding member 7 to slide upwards together.

As shown in fig. 3, when the push rod 6 is pushed downward, it first slides downward along the front supporter 1 by a certain amount, and at this time, the push rod 6 slides downward without the slider 7, and the upper end of the rear supporter 2 also does not slide downward. As shown in fig. 4, after the push rod 6 slides downwards for a while, the length occupied by the push rod 6 in the folded state is advantageously shortened, so that the folded push rod 6 is substantially overlapped with the seat frame 4 along the up-down direction.

Optionally, the lower end of the push rod 6 may also be fixedly connected to the sliding member 7, when the push rod 6 moves downward, the sliding member 7 is directly driven to move downward, and when the push rod 6 moves upward, the sliding member 7 is directly driven to move upward.

Further, as shown in fig. 1, the stroller frame further includes a handle 12, a lower end of the handle 12 is fixedly connected with an upper end of the push rod 6, a locking joint (not shown) is disposed between the front frame 1 and the push rod 6, the locking joint is installed in the sliding member 7, and an unlocking assembly 14 is disposed on the handle 12;

when the front support is unfolded, the locking joint locks the front support 1 and the push rod 6, and the push rod 6 cannot slide along the front support 1;

the unlocking assembly 14 can unlock the locking joint, and the unlocking rear push rod 6 can slide downwards along the front support 1 to fold the baby stroller frame.

When the baby stroller needs to be folded, a user presses the unlocking assembly 14 on the handle 12, the unlocking assembly 14 can drive the locking joint through a steel wire (not shown) and unlock the locking joint, and the steel wire is linked with the locking joint after penetrating through the handle 12 and the rod piece inner cavity of the push rod 6. The user pushes the push rod 6 downward again, and the push rod 6 can slide relative to the front supporter 1.

When the stroller needs to be unfolded from the folded state, as shown in fig. 4, the handle 12 is lifted upwards, the handle 12 drives the push rod 6 to slide upwards, and when the push rod 6 slides to the upper end of the front frame 1, the push rod 6 and the front frame 1 are locked again through the locking joint, so that the upper end of the push rod 6 is kept at the position.

In the first embodiment, as shown in fig. 1 to 2, the seat frame 4 is a quadrangular frame, and the seat frame 4 is used for mounting the seat pocket 9.

Further, as shown in fig. 1, the stroller frame further includes a sunshade frame 10, the sunshade frame 10 includes a first frame 101 and a second frame 102, and the first frame 101 is installed at a downstream position of the second frame 102;

when unfolded, the first canopy frame 101 is rotated upward, and the second canopy frame 102 is rotated forward for unfolding the sunshade cloth 11.

Specifically, the first canopy frame 101 is installed on the seat frame 4, the first canopy frame 101 includes two struts, the second canopy frame 102 is installed on the push rod 6, and the width of the second canopy frame 102 is greater than the width of the first canopy frame 101.

When the first canopy frame 101 is rotated upward and unfolded, the height of the sunshade cloth 11 is used for being spread, and when the second canopy frame 102 is rotated forward and unfolded, the length of the sunshade cloth 11 along the front and rear direction of the vehicle body is used for being spread, and the sunshade range is larger due to the combination of the two.

Alternatively, the first canopy frame 101 may have only one strut and be connected to the push rod 6, and the connection point of the first canopy frame 101 to the push rod 6 is closer to the lower end of the push rod 6.

Further, as shown in fig. 5 to 6, the seat pocket 9 includes a main pocket 91 and a sub pocket 92, the main pocket 91 is installed on the seat frame 4, the sub pocket 92 is foldable and received in the bottom of the main pocket 91, and the main pocket 91 is communicated with the receiving space of the sub pocket 92 after the sub pocket 92 is unfolded downward.

Wherein, as shown in fig. 5, the main pocket 91 is a rectangular pocket, and when the sub pocket 92 is folded, the bottom of the main pocket 91 is a plane, and a baby can lie in the main pocket 91 or sit down in the main pocket 91.

As shown in fig. 6, when the sub-pocket 92 is unfolded downward, the sub-pocket 92 expands the receiving space of the main pocket 91, and the calf and the foot of the infant can be inserted into the sub-pocket 92 to sit on the bottom of the main pocket 91. The sub pocket 92 is provided at a bottom middle region of the main pocket 91, and two infants can sit in the main pocket 91 while facing each other.

Alternatively, the sub pocket 92 may also be provided at the front or rear side of the bottom of the main pocket 91. The feet of one infant can be placed in the secondary pocket 92 and the other infant can lie or sit on a tray.

After the auxiliary pocket 92 is unfolded, the auxiliary pocket can also be used for storing articles such as baby feeding bottles, quilts, towels and the like.

Further, the folded secondary pocket 92 is connected with the main pocket 91 through a zipper, a tether or a hook and loop fastener.

When the sub-pocket 92 is not used, the sub-pocket 92 is folded and a zipper is zipped, or a tether is tied, or a hook and loop fastener is stuck, so that the sub-pocket 92 and the bottom of the main pocket 91 constitute a complete plane.

When the auxiliary pocket 92 needs to be used, the zipper is unzipped, or the tether is unfastened, or the thread gluing is torn, and at the moment, the auxiliary pocket 92 automatically sinks under the action of gravity.

In this embodiment, the main pocket 91 and the sub pocket 92 are integrated, and the main pocket 91 and the sub pocket 92 are integrally connected by sewing a plurality of woven fabrics.

In this embodiment, the seat pocket 9 is shaped like a deep bucket, and the main pocket 91 constitutes a main body of the deep bucket, having a large accommodation space, so that a baby can sit in the seat pocket 9 without putting his feet outside the vehicle like a general stroller.

In this embodiment, the cross-sections of the main pocket 91 and the sub pocket 92 are rectangular.

Alternatively, the cross-section of the main pocket 91 may be elliptical, and the cross-section of the sub pocket 92 may be rectangular, or other shapes.

In this embodiment, the cross-sectional area of the main pocket 91 is greater than that of the sub pocket 92, the depth of the sub pocket 92 is also less than that of the main pocket 91, and the sub pocket 92 serves as a function extension structure of the main pocket 91.

Alternatively, the cross-sectional area of the sub pocket 92 may be equal to that of the main pocket 91, as a depth extension structure of the main pocket 91. Can be suitable for young children with older age or higher height.

Preferably, a hard support plate (not shown) is installed at the bottom of the main pocket 91, and the hard support plate is installed in an interlayer of the bottom of the main pocket 91. The hard supporting plate can support the bottom of the main bag 91, so that the weight of two babies can be borne, and the deformation can be reduced.

The foldable part of the auxiliary pocket 92 is a flexible woven fabric, and the part of the auxiliary pocket 92 spliced with the main pocket 91 is also added with an interlayer of a hard support plate.

Further, as shown in fig. 1, the handle assembly 8 includes a T-shaped handle 82, a connecting rod 83, and a rotating portion 84;

the handle 82 is connected to an upper end of the connecting rod 83, a lower end of the connecting rod 83 is inserted into the rotating portion 84, the rotating portion 84 is capable of rotating and adjusting the angle of the handle 82 and the connecting rod 83, and at least the rotating portion 84 is mounted on the stroller frame.

In this embodiment, the handle 82 and the connecting rod 83 are adjusted to any angle convenient for the user to drag the stroller frame by rotating the rotating portion 84, and then the user holds the handle 82 and drives the stroller frame to move back and forth by the handle assembly. This embodiment can be after baby's shallow frame receipts car, convenience of customers drives baby's shallow frame through handle subassembly and removes.

Further, as shown in fig. 1, the handle assembly 8 further includes a snap ring 81, the snap ring 81 is installed at a front side of the seat frame 4 of the stroller frame, and an upper portion of the connection rod 83 is snapped into the snap ring 81.

When the stroller frame is unfolded, the upper portion of the connecting rod 83 is caught on the catch 81 when the handle assembly 8 is not required to be used.

Alternatively, the snap ring 81 may also be engaged with the handle 82. The retainer ring 81 may be eliminated and when the handle assembly 8 is not required to be used, the handle assembly 8 is received in the bottom of the chassis 3 as shown in fig. 4, which will be described in detail later.

Further, as shown in fig. 1, the rotating portion 84 is connected to the bottom frame 3 of the stroller frame. The rotating portion 84 is rotatable with respect to the chassis 3.

Alternatively, the rotating portion 84 may be a hinge. The hinge connects the chassis 3 and the connecting rod 83, and the connecting rod 83 can rotate around the hinge.

In this embodiment, as shown in fig. 7 and 10, the handle assembly 8 further includes a mounting bracket 85, the mounting bracket 85 is connected to the chassis 3, the rotating portion 84 is rotatably connected to the mounting bracket 85, a gear portion 841 is disposed on the rotating portion 84, an elastic tooth 851 is disposed in the mounting bracket 85, and the gear portion 841 is meshed with the elastic tooth 851.

Specifically, as shown in fig. 9, two mounting grooves 852 are provided on the mounting bracket 85, and the mounting grooves 852 are engaged with the front side of the chassis 3 to fix the mounting bracket 85.

The rotation portion 84 is rotatable with respect to the mount 85, and when the rotation portion 84 rotates, the gear portion 841 is rotated, the gear portion 841 meshes with the elastic teeth 851 of the mount 85, and when the gear portion 841 rotates, the elastic teeth 851 retract. When the gear portion 841 stops rotating, the elastic teeth 851 protrude to maintain the gear portion 841 at the angle, thereby maintaining the inclination angle of the connecting rod 83 and the handle 82.

As shown in fig. 11 to 12, the elastic tooth 851 includes a tooth tip portion 851a, a positioning pin 851b, a tooth shell 851c and a spring (not shown), the tooth tip portion 851a is inserted into the tooth shell 851c and connected by the positioning pin 851b, a sliding groove 851d is opened on the tooth tip portion 851a, and the spring is installed in the tooth shell 851c and tightly pressed against the tooth tip portion 851 a.

When the gear portion 841 rotates, the gear portion 841 pushes the tooth tip 851a to retract into the tooth case 851c, and the spring is compressed. When the gear portion 841 is not rotated, the spring urges the tooth tip 851a to partially protrude from the gear case 851c, the tooth tip 851a meshes with the tooth valley of the gear portion 841, and the slide groove 851d telescopically slides back and forth with respect to the positioning pin 851 b.

Further, as shown in fig. 7, the rotating portion 84 is further provided with an extending piece 842, the extending piece 842 is provided with a slot 843, the bottom of the connecting rod 83 is provided with a first locking portion 831 capable of elastically extending outwards, and when the handle assembly 8 is in a use state, the slot 843 is engaged with the first locking portion 831.

Further, as shown in fig. 13, an unlocking member 821 is provided on the handle 82,

when the handle assembly 8 needs to be retracted, the unlocking piece 821 is pressed, the unlocking piece 821 can retract the first locking portion 831 into the connecting rod 83, the first locking portion 831 is disengaged from the clamping groove 843, and the connecting rod 83 slides towards the rear of the baby stroller frame in the horizontal direction from the rotating portion 84 after rotating to a position parallel to the underframe 4. At this time, the first locking portion 831 slides rearward to the bottom of the chassis 3.

Further, as shown in fig. 7 and 13, a second locking portion 832 engageable with the catch 843 is provided at an upper portion of the connection rod 83, and when the connection rod 83 slides from the rotation portion 84 in the horizontal direction toward the rear of the stroller frame, the rearward sliding is stopped until the second locking portion 832 is engaged with the catch 843.

The second locking portion 832 is engaged with the catch groove 843, and can keep the handle assembly 8 in a position retracted below the chassis 3, preventing the handle assembly 8 from shaking or accidentally extending.

Further, as shown in fig. 7 and 13, an end cap 833 is coupled to a lower end of the connecting rod 83 after passing through the rotating portion 84, and an outer width of the end cap 833 is greater than a width of a central hole of the rotating portion 84.

When the connecting rod 83 is extended, the end cap 833 prevents the connecting rod 83 from falling out of the central hole of the rotating portion 84, and when the connecting rod 83 is retracted to the bottom of the frame 3, the end cap 833 moves away from the rotating portion 84 toward the rear of the stroller frame.

Further, as shown in fig. 14, a coupling assembly 13 is provided on the seat frame 4, and the coupling assembly 13 is used for mounting the infant safety seat frame 17. The coupling assembly 13 is capable of mounting an infant safety seat or a sleeping basket on the seat frame 4.

Specifically, the combination assembly 13 includes an insertion portion 131 and a fastening portion 132, the insertion portion 131 is fixed to the infant safety seat frame 17, the infant safety seat frame 17 is connected to the infant car safety seat 19 as a whole, and the fastening portion 132 is fixed to the seat frame 4. When the baby car safety seat is used, a user inserts the inserting part 131 into the buckling part 132 to realize the connection between the baby car safety seat 19 and the seat frame 4, the baby does not need to be taken out of the baby car safety seat 19 of the car, and the safety and the comfort of the baby car safety seat 19 are more suitable for the baby with a small age. When the stroller is not needed, the insertion portion 131 and the locking portion 132 are unlocked, and the stroller safety seat 19 is carried to the rear seat of the stroller together with the infant.

Example two:

fig. 15 is a schematic structural view of a stroller frame according to a second embodiment of the present invention.

The structure of the second embodiment that is substantially the same as the first embodiment will not be described again.

In the second embodiment, the seat frame 4 is further provided with a tray 16, and the tray 16 can be used for holding a cup and a mobile phone.

Further, a pedal assembly 18 is installed at the rear side of the underframe 3, pulleys are arranged at the bottom of the pedal assembly 18, and a large child can stand on the pedal assembly 18 and be held on the handle 12.

Further, handle assembly 8 includes bracelet 88, inner tube 86 and outer tube 87, and bracelet 88 is the ring type, and inner tube 86 can stretch out and draw back in outer tube 87 along self length direction.

When the handle assembly 8 needs to be used, the inner sleeve rod 86 is pulled out of the outer sleeve 87 by pulling the hand ring 88, and the outer sleeve 87 is connected with the chassis 3. The assembly 8 is pulled to move the entire stroller frame. When not needed, inner sleeve rod 86 is retracted into outer sleeve 87.

The foregoing is considered as illustrative only of the principles and preferred embodiments of the invention. It should be noted that, for those skilled in the art, on the basis of the principle of the present invention, several other modifications can be made, and the protection scope of the present invention should be considered.

Claims

1. A baby stroller frame comprises a front support, a rear support, an underframe and a seat frame, wherein the lower end of the front support is rotatably connected with the underframe, the lower end of the rear support is rotatably connected with the underframe, the baby stroller frame is characterized in that,

the upper end of the supporting rod is rotatably connected with the rear part of the seat frame, the lower end of the supporting rod is rotatably connected with the rear support, the upper end of the front support is rotatably connected with the middle part of the seat frame, and the upper end of the rear support can slide up and down along the front support;

2. The stroller frame according to claim 1, further comprising a push rod and a sliding member, wherein the sliding member is sleeved on the front support and can slide up and down along the front support, the lower end of the push rod is inserted into the sliding member, and the upper end of the rear support is rotatably connected with the sliding member.

3. The stroller frame according to claim 2, wherein a side of the push rod facing the front support is provided with a protrusion, when the push rod slides downwards for a while, the protrusion abuts against an upper end of the sliding member, and the push rod drives the sliding member to slide downwards together;

4. The stroller frame according to claim 2, further comprising a handle, wherein the lower end of the handle is fixedly connected with the upper end of the push rod, a locking joint is arranged between the front bracket and the push rod, the locking joint is arranged in the sliding member, and an unlocking assembly is arranged on the handle;

5. The stroller frame according to claim 1, wherein the seat frame is a quadrangular frame, the seat frame is used for mounting a seat pocket, the seat pocket comprises a main pocket and a sub pocket, the main pocket is mounted on the seat frame, the sub pocket can be folded at the bottom of the main pocket, and the sub pocket can be unfolded downwards.

6. The stroller frame according to claim 1, wherein a coupling assembly is provided on the seat frame for mounting a baby car safety seat.

7. The stroller frame according to claim 6, wherein the coupling assembly comprises an insertion part and a latching part, the insertion part is fixed to the infant safety seat frame, and the latching part is fixed to the seat frame.

8. The stroller frame of claim 1, further comprising a sunshade frame, said sunshade frame comprising a first frame and a second frame, said first frame mounted at a location downstream of said second frame;

9. The stroller frame according to claim 1, further comprising a handle assembly, wherein an upper end of the handle assembly is adapted to be snapped onto the seat frame and a lower end of the handle assembly is rotatably coupled to the base frame.