CN214524019U

CN214524019U - Baby carriage frame

Info

Publication number: CN214524019U
Application number: CN202120625495.2U
Authority: CN
Inventors: 易立伟
Original assignee: Zhongshan Mingguan Daily Products Co ltd
Current assignee: Zhongshan Mingguan Daily Products Co ltd
Priority date: 2021-03-27
Filing date: 2021-03-27
Publication date: 2021-10-29
Anticipated expiration: 2031-03-27

Abstract

The utility model discloses a baby carriage frame, including preceding vaulting pole 1 and back vaulting pole 2, 1 lower extreme of preceding vaulting pole be connected with its pivoted front wheel support 3 relatively, front wheel support 3 on be connected with front wheel subassembly 4, 2 lower extremes of back vaulting pole be connected with rear wheel subassembly 21, preceding vaulting pole 1 on be connected with and follow its gliding slider 5, 2 upper ends of back vaulting pole rotate with slider 5 to be connected, 2 lower extremes of back vaulting pole and front wheel support 3 between be equipped with the transfer line 6 of being connected with the two rotation, preceding vaulting pole 1 on still connect its flexible handspike 7 relatively, preceding vaulting pole 1 and slider 5 between be equipped with and lock baby carriage exhibition state and can be by locking device 8 of handspike 7 unblock when handspike 7 is retracted in to preceding vaulting pole 1. The utility model discloses simple structure, folding convenient operation.

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 have become an indispensable product in the growth process of infants. Current strollers are generally capable of being unfolded or folded. But the structure of the prior common baby carriage is more complex and the folding operation is inconvenient.

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 with simple structure and convenient folding operation.

The utility model discloses a realize through following technical scheme:

the utility model provides a baby carriage frame, includes preceding vaulting pole 1 and back vaulting

pole

2, 1 lower extreme of preceding vaulting pole be connected with its pivoted front wheel support 3 relatively, front wheel support 3 on be connected with front wheel subassembly 4, 2 lower extremes of back vaulting pole be connected with rear wheel subassembly 21, preceding vaulting pole 1 on be connected with and follow its

gliding slider

5, 2 upper ends of back vaulting pole rotate with slider 5 to be connected, 2 lower extremes of back vaulting pole and front wheel support 3 between be equipped with the transfer line 6 of being connected with the two rotation, preceding vaulting pole 1 on still connect the handspike 7 that can stretch out and draw back relatively, preceding vaulting pole 1 and slider 5 between be equipped with and lock the baby carriage state of opening and can be by the locking device 8 of handspike 7 unblock when handspike 7 is to preceding vaulting pole 1 in.

Slider 5 including expose in the sliding seat 51 of preceding vaulting pole 1 and with sliding seat 51 fixed connection and establish the slide bar 52 in preceding vaulting pole 1, locking device 8 including establishing in slide bar 52 and can be relative slide bar 52 lateral shifting's locking piece 81, preceding vaulting pole 1 on be equipped with the locking hole 82 that can block or break away from with locking piece 81, slide bar 52 on still be connected with and can be promoted and relative slide bar 52 longitudinal movement's promotion piece 83 by handspike 7 lower extreme, promotion piece 83 on be equipped with and can promote the first drive division 84 that locking piece 81 and locking hole 82 break away from when its relative slide bar 52 removes, promotion piece 83 and slide bar 52 between be equipped with the first reset spring 87 that can drive promotion piece 83 reset.

The locking block 81 is provided with a first transverse shaft 85, the first driving part 84 is a first inclined surface which is arranged on the pushing block 83 and can push the first transverse shaft 85, and a first top pressure spring 86 which can push the locking block 81 to move transversely is arranged between the sliding rod 52 and the locking block 81.

The sliding seat 51 is provided with a sliding sheet 53 which extends into the front support rod 1 and can clamp the front support rod 1 with the sliding seat 51, the sliding rod 52 is fixedly connected to the sliding sheet 53, and the front support rod 1 is provided with a sliding groove 11 in which the sliding sheet 53 can slide.

The front support rod 1 is internally provided with an adjusting device 9 capable of adjusting the telescopic gear of the hand push rod 7.

Adjusting device 9 include fixed connection on slider 5 and be located the inside regulation pole 91 of preceding vaulting pole 1, regulation pole 91 on be equipped with a plurality of regulation holes 92, handspike 7 include the body of rod 71 and establish interior chock 72 at body of rod 71 lower extreme, interior chock 72 in establish can be relative its lateral shifting and can with regulation hole 92 block or the regulating block 93 that breaks away from, interior chock 72 on still be connected with can be relative its longitudinal sliding's gliding piece 94, gliding piece 94 on be equipped with can drive regulating block 93 and the second drive portion 95 that adjusts the hole 92 and break away from when its slides relative interior chock 72, gliding piece 94 and interior chock 72 between still be equipped with the third reset spring 96 that can drive gliding piece 94 resets, handspike 7 on still be equipped with the gliding driving piece 97 that can drive gliding piece 94 relative interior chock 72.

The adjusting block 93 is provided with a second transverse shaft 98, the second driving part 95 is an inclined groove arranged on the sliding block 94, and when the sliding block 94 slides relative to the inner plug seat 72, the groove wall of the inclined groove pushes the second transverse shaft 98 to enable the adjusting block 93 to transversely move relative to the inner plug seat 72.

The adjusting rod 91 is further provided with a protruding part 99 which can be touched by the push rod 7 when the push rod 7 extends out relative to the front stay 1 so as to pull the sliding piece 5 to slide relative to the front stay 1 and expand the baby carriage frame.

The front wheel assembly 4 comprises a front wheel seat 41 and a front wheel 42 connected to the front wheel seat 41, the front wheel seat 41 is provided with a connecting shaft 43, the front wheel support 3 is provided with a plug hole 31 for the connecting shaft 43 to be inserted and for the connecting shaft 43 to rotate inside, a latch assembly 10 for locking the front wheel support 3 and the connecting shaft 43 is arranged between the front wheel support 3 and the connecting shaft 43, the front wheel support 3 is further connected with a driving assembly 20 capable of sliding relative to the front wheel support 3 to drive the latch assembly 10 to be unlocked, the driving assembly 20 comprises a driving block 201 arranged in the front wheel support 3, the driving block 201 is connected with a toggle button 202 exposed out of the front wheel support 3, a positioning block 203 capable of sliding up and down relative to the driving block is arranged in the driving block 201, the front wheel seat 41 is provided with an orientation groove 44 capable of being engaged with the positioning block 203 to orient the front wheel assembly 4, and a second jacking spring 204 capable of jacking the positioning block 203 is arranged between the positioning block 203 and the driving block wheel assembly 201.

The front wheel bracket 3 is provided with a vertical groove 32, and the wall of the vertical groove 32 is provided with a positioning protrusion 33 which can position the toggle button 202.

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

1. the utility model discloses when folding, promote the handspike downwards, the handspike then promotes the locking device unblock when sliding downwards in the front stay, in case locking device unblock slider just drives the rear stay upper end and draws close to the front wheel subassembly, meanwhile, the front stay lower extreme then relatively front wheel support after-rotation and make the handspike upper end draw close to the rear wheel subassembly, at this in-process, the transfer line then relatively front wheel support rotates with the rear stay and makes the folding action of perambulator frame steady. The whole baby carriage frame is simple and compact in structure, folding of the baby carriage frame can be achieved only by pushing the hand push rod relative to the front support rod and pressing the hand push rod downwards when the baby carriage frame is folded, and folding operation is very convenient and fast.

2. The utility model discloses an be equipped with the adjusting device that can adjust the flexible gear of handspike in the preceding vaulting pole. Therefore, in the unfolded state of the baby carriage, the hand push rod can stay at a plurality of gears in the front support rod, the hand push rod can be retracted into the front support rod when the arms of a user are long, and the hand push rod can be pulled out from the front support rod when the arms of the user are short, so that the baby carriage is suitable for users with different arm lengths, and the user feels comfortable to use.

3. The utility model discloses simple structure is compact, folding convenient operation, and occupation space is little after folding, is fit for popularizing and applying.

[ description of the drawings ]

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

fig. 2 is a side view of the present invention in an unfolded state;

fig. 3 is a side view of the present invention during folding;

fig. 4 is one of the partial cross-sectional views of the present invention;

FIG. 5 is an enlarged view at A in FIG. 4;

fig. 6 is one of exploded views of components of the present invention;

FIG. 7 is one of the perspective views of the components of the present invention;

fig. 8 is a cross-sectional view of a component of the present invention;

FIG. 9 is a partial view of the front wheel carrier of the present invention;

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

FIG. 11 is a side view of the present invention in an expanded state after assembly of the seat assembly;

fig. 12 is a schematic view of the folding process of the present invention after assembly of the seat assembly;

figure 13 is a folded view of the present invention with the seat assembly assembled.

[ 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 comprises a front stay bar 1 and a rear stay bar 2, wherein the lower end of the front stay bar 1 is connected with a front wheel bracket 3 which can rotate relative to the front stay bar, the front wheel bracket 3 is connected with a front wheel assembly 4, the lower end of the rear stay bar 2 is connected with a rear wheel assembly 21, the front stay bar 1 is connected with a sliding piece 5 which can slide along the front stay bar, the upper end of the rear stay bar 2 is rotatably connected with the sliding piece 5, a transmission rod 6 which is rotatably connected with the lower end of the rear stay bar 2 and the front wheel bracket 3 is arranged between the lower end of the rear stay bar 2 and the front wheel bracket 3, the front stay bar 1 is further connected with a push rod 7 which can extend and retract relative to the front stay bar, and a locking device 8 which can lock the unfolded state of the stroller and can be unlocked by the push rod 7 when the push rod 7 retracts into the front stay bar 1 is arranged between the front stay bar 1 and the sliding piece 5. When the baby stroller is folded, the hand push rod 7 is pushed downwards, the hand push rod 7 pushes the locking device 8 to be unlocked when sliding downwards in the front support rod 1, once the locking device 8 unlocks the sliding piece 5, the upper end of the rear support rod 2 is driven to be drawn to the front wheel assembly 4, meanwhile, the lower end of the front support rod 1 rotates backwards relative to the front wheel support 3 to enable the upper end of the hand push rod 7 to be drawn to the rear wheel assembly 21, and in the process, the transmission rod 6 rotates relative to the front wheel support 3 and the rear support rod 2 to enable the baby stroller frame to be folded stably. The whole baby carriage frame is simple and compact in structure, folding of the baby carriage frame can be achieved only by pushing the hand push rod 7 relative to the front support rod 1 and pressing down, and folding operation is very convenient and fast.

5 and as shown in fig. 6, the sliding member 5 includes a sliding seat 51 exposed out of the front support rod 1 and a sliding rod 52 fixedly connected with the sliding seat 51 and arranged in the front support rod 1, the locking device 8 includes a locking block 81 arranged in the sliding rod 52 and capable of moving transversely relative to the sliding rod 52, the front support rod 1 is provided with a locking hole 82 capable of being engaged with or disengaged from the locking block 81, the sliding rod 52 is further connected with a pushing block 83 capable of being pushed by the lower end of the push rod 7 and moving longitudinally relative to the sliding rod 52, the pushing block 83 is provided with a first driving portion 84 capable of pushing the locking block 81 and the locking hole 82 to disengage when the pushing block moves relative to the sliding rod 52, and a first return spring 87 capable of driving the pushing block 83 to return is arranged between the pushing block 83 and the sliding rod 52. When the stroller frame needs to be folded, the push rod 7 is pushed downwards, the lower end of the push rod 7 pushes the push block 83, the push block 83 drives the locking block 81 to be separated from the locking hole 82 on the front stay bar 1 when sliding relative to the sliding rod 52, and the locking device 8 is unlocked at the moment, so that the sliding piece 5 can slide downwards along the front stay bar 1, and the folding of the stroller frame is further realized. Therefore, the locking device 8 can be unlocked and the front support rod can be rotated and folded relative to the front wheel support 3 only by pushing the hand push rod 7 and pressing down, so that the rear support rod 2 is folded, and the whole operation is simple and rapid.

As shown in fig. 5 and 6, the locking block 81 is provided with a first transverse shaft 85, the first driving portion 84 is a first inclined surface provided on the pushing block 83 and capable of pushing the first transverse shaft 85, and a first pressing spring 86 capable of pushing the locking block 81 to move transversely is provided between the sliding rod 52 and the locking block 81. When the pushing block 83 slides longitudinally relative to the sliding rod 52, the first inclined surface on the pushing block 83 pushes the first transverse shaft 85, so that the locking block 81 moves transversely relative to the sliding rod 52 to be separated from the locking hole 82, and the longitudinal movement of the pushing block 83 is converted into the transverse movement of the locking block 81.

As shown in fig. 6 and 7, the sliding seat 51 is provided with a sliding piece 53 which extends into the front stay bar 1 and can clamp the front stay bar 1 with the sliding seat 51, the sliding bar 52 is fixedly connected to the sliding piece 53, and the front stay bar 1 is provided with a sliding groove 11 in which the sliding piece 53 can slide. When the sliding member 5 slides along the front stay 1, the sliding piece 53 slides in the sliding groove 11, and the sliding piece 53 and the sliding seat 51 present a clamping state to the front stay 1, so that the sliding member 5 slides along the front stay 1 smoothly and reliably.

As shown in fig. 5 and 6, an adjusting device 9 capable of adjusting the telescopic gear of the handspike 7 is arranged in the front stay bar 1. Therefore, in the unfolded state of the stroller, the push rod 7 can stay at a plurality of gears in the front stay bar 1, the push rod 7 can be retracted into the space when the arms of the user are long, and the push rod 7 can be pulled out when the arms of the user are short, so that the stroller is suitable for users with different arm lengths, and the user feels comfortable when using the stroller.

As shown in fig. 5 and 6, the adjusting means 9 includes an adjusting lever 91 fixedly coupled to the sliding member 5 and positioned inside the front supporter 1, the adjusting rod 91 is provided with a plurality of adjusting holes 92, the hand push rod 7 comprises a rod body 71 and an inner plug seat 72 arranged at the lower end of the rod body 71, an adjusting block 93 which can move transversely relative to the inner plug seat 72 and can be clamped with or separated from the adjusting hole 92 is arranged in the inner plug seat, the inner plug seat 72 is also connected with a sliding block 94 capable of sliding longitudinally relative to the inner plug seat, the sliding block 94 is provided with a second driving part 95 capable of driving the adjusting block 93 to be separated from the adjusting hole 92 when the sliding block 94 slides relative to the inner plug seat 72, a third return spring 96 which can drive the sliding block 94 to return is also arranged between the sliding block 94 and the inner plug seat 72, the handle bar 7 is further provided with a driving member 97 capable of driving the sliding block 94 to slide relative to the inner plug seat 72. In this embodiment, the adjustment lever 91 is fixedly coupled to the slide lever 52. When the baby carriage frame is in the unfolding state, the sliding block 94 can be driven by the driving piece 97 to slide relative to the inner plug seat 72, the sliding block 94 drives the adjusting block 93 to be separated from the adjusting hole 92 on the adjusting rod 91 in the sliding process, once the adjusting block 93 is separated from the adjusting hole 92, the hand push rod 7 can stretch out and draw back, the stop gear of the hand push rod 7 is adjusted, when the hand push rod 7 reaches a required position, the driving piece 97 is loosened, and the sliding block 94 resets to enable the adjusting block 93 to be clamped with the corresponding adjusting hole 92 again. When the baby carriage frame needs to be folded, the adjusting block 93 is driven to be separated from the adjusting hole 92 through the driving piece 97, the separated state is kept, then the hand push rod 7 is pushed downwards until the lower end of the hand push rod 7 pushes the pushing block 83, the locking device 8 is unlocked, and the folding of the baby carriage frame is further realized.

As shown in fig. 1, 5 and 6, the driving member 97 includes a pulling rope 971 connected to the sliding block 94, and the handle 7 is provided with an operating member 972 connected to the pulling rope 971 and capable of pulling the pulling rope. When the gear of the hand push rod 7 needs to be adjusted or the stroller frame needs to be folded, the operating part 972 is pinched, so that the pull rope 971 is pulled, the pull rope 971 drives the sliding block 94 to move, the adjusting block 93 is separated from the adjusting hole 92, and the hand push rod 7 stretches and retracts to adjust the gear or pushes the locking device 8 downwards to unlock. The operation member 972 is a conventional operation button structure, and will not be described herein.

As shown in fig. 5 and 6, the adjusting block 93 is provided with a second transverse shaft 98, the second driving portion 95 is an inclined groove provided on the sliding block 94, and when the sliding block 94 slides relative to the inner plug seat 72, a groove wall of the inclined groove pushes the second transverse shaft 98 to make the adjusting block 93 move transversely relative to the inner plug seat 72. When the sliding block 94 slides, the groove wall of the inclined groove pushes the second transverse shaft 98, so that the adjusting block 93 is clamped or separated from the adjusting hole 92, and the design is ingenious.

As shown in fig. 5 and 6, the adjustment lever 91 is further provided with a protrusion 99 which is touched by the handle 7 when the handle 7 is extended relative to the front stay 1, and pulls the slider 5 to slide relative to the front stay 1, thereby unfolding the stroller frame. When the baby carriage frame moves from the folded state to the unfolded state, the push rod 7 is pulled upwards relative to the front support rod 1, so that the protruding portion 99 can be pushed through the inner plug seat 72 on the push rod 7, the adjusting rod 91 is pulled, the sliding piece 5 is pulled to slide upwards relative to the front support rod 1, the baby carriage frame is unfolded, even if the adjusting block 93 is not clamped with the adjusting hole 92 in the folded state of the baby carriage frame, the sliding piece 5 can slide upwards along the front support rod 1, and the baby carriage frame is ensured to be unfolded smoothly.

As shown in fig. 8 to 10, the front wheel assembly 4 includes a front wheel seat 41 and a front wheel 42 connected to the front wheel seat 41, the front wheel seat 41 is provided with a connecting shaft 43, the front wheel bracket 3 is provided with an inserting hole 31 for inserting the connecting shaft 43 and allowing the connecting shaft 43 to rotate therein, a latch assembly 10 for locking the front wheel bracket 3 and the connecting shaft 43 is provided between the front wheel bracket 3 and the connecting shaft 43, the front wheel bracket 3 is further connected with a driving assembly 20 capable of sliding relative to the driving assembly to unlock the latch assembly 10, the driving assembly 20 includes a driving block 201 disposed in the front wheel bracket 3, the driving block 201 is connected with a toggle button 202 exposed from the front wheel bracket 3, the driving block 201 is provided with a positioning block 203 capable of sliding up and down relative to the driving block, the front wheel seat 41 is provided with an orientation groove 44 capable of engaging with the positioning block 203 to orient the front wheel assembly 4, a second pressing spring 204 capable of pressing the positioning block 203 is further arranged between the positioning block 203 and the driving block 201. The connecting shaft 43 is inserted into the insertion hole 31 and can rotate in the insertion hole 31, so that the direction change of the front wheel assembly 3 can be realized. When the stroller is required to advance directionally, the toggle button 202 is pushed downwards, so that the positioning block 203 moves downwards together with the toggle button 202, if the orientation slot 44 is aligned with the positioning block 203, the positioning block 203 is directly pushed into the orientation slot 44, at this time, the stroller can only advance directionally in one direction, if the toggle button 202 moves downwards and the orientation slot 44 is not aligned with the positioning block 203, the front wheel seat 41 abuts against the positioning block 203 and compresses the second top pressure spring 204, at this time, the front wheel assembly 4 needs to be rotated, and once the front wheel assembly 4 rotates until the orientation slot 44 is aligned with the positioning block 203, the second top pressure spring 204 pushes the positioning block 203 to be clamped downwards into the orientation slot 44, so that the automatic positioning function is realized. Therefore, when the direction of the front wheel assembly 4 is set, only the toggle button 202 needs to be pushed downwards or the toggle button 202 needs to be pushed and the front wheel assembly 4 needs to be rotated, and the operation is very convenient and fast.

As shown in fig. 9, a vertical groove 32 is formed on the front wheel bracket 3, and a positioning protrusion 33 capable of positioning the position of the toggle button 202 is formed on a groove wall of the vertical groove 32. The positioning protrusion 33 positions the toggle button 202, so that when the toggle button 202 is positioned above the positioning protrusion 33, even if the positioning block 203 is aligned with the orientation groove 44, the positioning block 203 will not descend and engage with the orientation groove 44, thereby ensuring that the front wheel assembly 4 is in a free reversing state.

As shown in fig. 8 and 10, the locking assembly 10 includes a locking plate 101 capable of sliding in the front wheel bracket 3, the locking plate 101 is provided with an annular hole 102, the connecting shaft 43 is provided with an annular groove 103 capable of engaging with or disengaging from the edge of the annular hole 102, the upper end of the driving block 201 is provided with a second inclined plane 205 capable of touching the locking plate 101 to push the locking plate 101 to slide, and the front wheel bracket 3 is further provided with a second return spring 104 capable of pushing the locking plate 101 to return. When the front wheel subassembly 4 is connected with front wheel support 3, the border card of annular hole 102 is in the ring channel 103 of connecting axle 43 on the catch plate 101, when the front wheel subassembly 4 was dismantled to needs, then upwards promotes toggle button 202, and second inclined plane 205 on the drive block 201 then promotes catch plate 101 lateral shifting for the border of annular hole 102 breaks away from with ring channel 103, just can take off front wheel subassembly 4 this moment, operates convenient and fast very.

As shown in fig. 11 to 13, the sliding member 5 is further connected with a mounting seat 30 for mounting a seat assembly 50. The mount 30 is used to mount a seat assembly 50 with an infant seated in the seat assembly 50. Of course, a flexible seat pocket may be attached to the front stay 1 without providing the seat unit 50, and the infant may be seated in the seat pocket.

Claims

1. A stroller frame, characterized in that: comprises a front stay bar (1) and a rear stay bar (2), the lower end of the front stay bar (1) is connected with a front wheel bracket (3) which can rotate relative to the front stay bar, the front wheel bracket (3) is connected with a front wheel assembly (4), the lower end of the rear stay bar (2) is connected with a rear wheel assembly (21), the front brace rod (1) is connected with a sliding piece (5) which can slide along the front brace rod, the upper end of the rear stay bar (2) is rotationally connected with the sliding part (5), a transmission rod (6) rotationally connected with the lower end of the rear stay bar (2) and the front wheel bracket (3) is arranged between the lower end of the rear stay bar (2) and the front wheel bracket, the front brace rod (1) is also connected with a hand push rod (7) which can stretch and retract relative to the front brace rod, a locking device (8) which can lock the unfolding state of the baby carriage and can be unlocked by the hand push rod (7) when the hand push rod (7) retracts into the front stay bar (1) is arranged between the front stay bar (1) and the sliding piece (5).

2. A stroller frame according to claim 1, wherein: the sliding part (5) comprises a sliding seat (51) exposed out of the front stay bar (1) and a sliding bar (52) fixedly connected with the sliding seat (51) and arranged in the front stay bar (1), the locking device (8) comprises a locking block (81) which is arranged in the sliding rod (52) and can transversely move relative to the sliding rod (52), the front stay bar (1) is provided with a locking hole (82) which can be clamped or separated from the locking block (81), the sliding rod (52) is also connected with a pushing block (83) which can be pushed by the lower end of the hand push rod (7) to move longitudinally relative to the sliding rod (52), the pushing block (83) is provided with a first driving part (84) which can push the locking block (81) to be separated from the locking hole (82) when the pushing block moves relative to the sliding rod (52), a first return spring (87) capable of driving the pushing block (83) to return is arranged between the pushing block (83) and the sliding rod (52).

3. A stroller frame according to claim 2, wherein: the locking device is characterized in that a first transverse shaft (85) is arranged on the locking block (81), the first driving part (84) is a first inclined surface which is arranged on the pushing block (83) and can push the first transverse shaft (85), and a first jacking spring (86) which can push the locking block (81) to move transversely is arranged between the sliding rod (52) and the locking block (81).

4. A stroller frame according to claim 2, wherein: the sliding seat (51) is provided with a sliding sheet (53) which extends into the front support rod (1) and can clamp the front support rod (1) with the sliding seat (51), the sliding rod (52) is fixedly connected to the sliding sheet (53), and the front support rod (1) is provided with a sliding groove (11) which can allow the sliding sheet (53) to slide in.

5. A stroller frame according to claim 1 or 2 or 3 or 4, wherein: the front support rod (1) is internally provided with an adjusting device (9) capable of adjusting the telescopic gear of the hand push rod (7).

6. A stroller frame according to claim 5, wherein: the adjusting device (9) comprises an adjusting rod (91) which is fixedly connected to the sliding piece (5) and is positioned inside the front support rod (1), a plurality of adjusting holes (92) are formed in the adjusting rod (91), the hand push rod (7) comprises a rod body (71) and an inner plug seat (72) arranged at the lower end of the rod body (71), an adjusting block (93) which can transversely move relative to the inner plug seat (72) and can be clamped with or separated from the adjusting holes (92) is arranged in the inner plug seat (72), a sliding block (94) which can longitudinally slide relative to the inner plug seat (72) is further connected on the inner plug seat (72), a second driving part (95) which can drive the adjusting block (93) to be separated from the adjusting holes (92) when the sliding block (94) slides relative to the inner plug seat (72) is arranged on the sliding block (94), and a third reset spring (96) which can drive the sliding block (94) to reset is further arranged between the sliding block (94) and the inner plug seat (72), the hand push rod (7) is also provided with a driving piece (97) which can drive the sliding block (94) to slide relative to the inner plug seat (72).

7. A stroller frame according to claim 6, wherein: the adjusting block (93) is provided with a second transverse shaft (98), the second driving part (95) is an inclined groove arranged on the sliding block (94), and when the sliding block (94) slides relative to the inner plug seat (72), the groove wall of the inclined groove pushes the second transverse shaft (98) to enable the adjusting block (93) to transversely move relative to the inner plug seat (72).

8. A stroller frame according to claim 6, wherein: the adjusting rod (91) is also provided with a convex part (99) which can be touched by the hand push rod (7) when the hand push rod (7) extends relative to the front support rod (1) so as to pull the sliding piece (5) to slide relative to the front support rod (1) to expand the baby carriage frame.

9. A stroller frame according to claim 1, wherein: the front wheel assembly (4) comprises a front wheel seat (41) and a front wheel (42) connected to the front wheel seat (41), the front wheel seat (41) is provided with a connecting shaft (43), the front wheel support (3) is provided with an inserting hole (31) for the connecting shaft (43) to insert and for the connecting shaft (43) to rotate inside, a locking assembly (10) for locking the front wheel support (3) and the connecting shaft (43) is arranged between the front wheel support (3) and the connecting shaft (43), the front wheel support (3) is also connected with a driving assembly (20) capable of sliding relative to the driving assembly to drive the locking assembly (10) to unlock, the driving assembly (20) comprises a driving block (201) arranged inside the front wheel support (3), the driving block (201) is connected with a toggle button (202) exposed out of the front wheel support (3), and a positioning block (203) capable of sliding up and down relative to the driving block is arranged inside the driving block (201), the front wheel seat (41) is provided with an orientation groove (44) which can be clamped with the positioning block (203) to orient the front wheel assembly (4), and a second jacking spring (204) which can jack the positioning block (203) is arranged between the positioning block (203) and the driving block (201).

10. A stroller frame according to claim 9, wherein: the front wheel bracket (3) is provided with a vertical groove (32), and the wall of the vertical groove (32) is provided with a positioning protrusion (33) capable of positioning the position of the toggle button (202).