CN215663605U - Baby carriage frame - Google Patents

Abstract

The utility model discloses a baby carriage frame which can move from an unfolded position to a folded position and comprises a rear support piece, a front support piece and a push rod, wherein the rear support piece comprises a rear support rod, the upper end of the rear support rod is provided with a first connecting part and a second connecting part in an extending mode towards the outer side of the rear support rod, the front support piece comprises a front support rod and a front wheel, the upper end of the front support rod is rotatably connected with the first connecting part, the lower end of the push rod is rotatably connected with the second connecting part, a first locking mechanism for locking the second connecting part and the push rod is arranged between the second connecting part and the push rod, a second locking mechanism for locking the first connecting part and the front support rod is arranged between the first connecting part and the front support rod, and a linkage mechanism capable of driving the second locking mechanism to be unlocked when the push rod rotates relative to the second connecting part is further arranged between the second connecting part and the push rod. The utility model aims to overcome the defects of the prior art and provides the baby carriage frame which is simple in structure, convenient to operate and small in size after being folded.

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 utility model ]

Strollers have become an indispensable product in the growth process of infants. Strollers are generally movable from an unfolded position to a folded position for ease of carrying and storage. However, the conventional stroller frame has the following disadvantages: the traditional baby carriage has more frame link mechanisms, more rod pieces, more complex structure and more complex folding operation, and the volume is still larger after the baby carriage is folded.

Therefore, the present invention has been made in view of the above disadvantages.

[ Utility model ] content

The utility model aims to overcome the defects of the prior art and provides the baby carriage frame which is simple in structure, convenient to operate and small in size after being folded.

The utility model is realized by the following technical scheme:

a stroller frame movable from an unfolded position to a folded position, characterized in that: comprises a rear support part 1, a front support part 2 and a push rod 3, wherein the rear support part 1 comprises a rear support rod 11, the upper end of the rear stay bar 11 extends outwards to form a first connecting part 12 and a second connecting part 13, the lower end of the rear stay bar 11 is connected with a rear wheel 14, the front stay 2 comprises a front stay 21 and a front wheel 22 arranged at the lower end of the front stay 21, the upper end of the front stay bar 21 is rotatably connected with the first connecting part 12, the lower end of the push rod 3 is rotatably connected with the second connecting part 13, a first locking mechanism for locking the second connecting part 13 and the push rod 3 is arranged between the two parts, a second locking mechanism for locking the first connecting part 12 and the front stay 21 is arranged between the two, and a linkage mechanism which can drive the second locking mechanism to unlock when the push rod 3 rotates relative to the second connecting part 13 is further arranged between the second connecting part 13 and the push rod 3.

The baby carriage frame is characterized in that: the first locking mechanism comprises a first connecting shell 41 arranged at the lower end of the push rod 3 and a second connecting shell 42 arranged at the upper end of the second connecting part 13 and enclosing the first connecting shell 41 into a first sealed cavity, a plurality of clamping grooves 43 are arranged on the first connecting shell 41 and the second connecting shell 42 along the circumferential direction, a clamping gear 44 capable of moving transversely in the first sealed cavity is arranged in the first sealed cavity, when the push rod 3 is locked with the second connecting part 13, the clamping gear 44 is clamped with the clamping grooves 43 on the first connecting shell 41 and the second connecting shell 42 simultaneously, when the push rod 3 is unlocked with the second connecting part 13, the clamping gear 44 is separated from the clamping groove 43 on the first connecting shell 41, a first spring 45 capable of clamping the clamping gear 44 with the clamping grooves 43 on the first connecting shell 41 and the second connecting shell 42 is arranged between the second connecting shell 42 and the clamping gear 44 simultaneously, a driving member capable of driving the engaging gear 44 to move laterally is further provided between the first connecting housing 41 and the engaging gear 44.

The baby carriage frame is characterized in that: the driving component comprises a driving rod 461 capable of moving longitudinally in the push rod 3, a driving inclined plane 462 is arranged on the driving rod 461, a driving block 463 capable of moving transversely and pushing the clamping gear 44 to move is arranged between the driving rod 461 and the clamping gear 44, a matching inclined plane 464 capable of matching with the driving inclined plane 462 and enabling the driving block 463 to be pushed by the driving rod 461 to move transversely is arranged on the driving block 463, a return spring 465 capable of pushing the driving rod 461 to reset is further arranged in the push rod 3, and a hand push handle 5 capable of sliding in the push rod 3 and pushing the driving rod 461 to slide is arranged in the push rod 3.

The baby carriage frame is characterized in that: the second locking mechanism comprises a third connecting shell 61 arranged at the upper end of the front stay 21 and a fourth connecting shell 62 arranged on the first connecting part 12 and enclosing with the third connecting shell 61 to form a second sealed cavity, a plurality of spline grooves 63 are arranged on the third connecting shell 61 and the fourth connecting shell 62 along the circumferential direction, a spline 64 capable of moving transversely is arranged in the second sealed cavity, when the front stay 21 is locked with the first connecting part 12, the spline 64 is simultaneously clamped with the spline grooves 63 on the third connecting shell 61 and the fourth connecting shell 62, when the front stay 21 is unlocked with the first connecting part 12, the spline 64 is separated from the spline groove 63 on the fourth connecting shell 62, a second spring 65 capable of clamping the spline 64 with the spline grooves 63 on the third connecting shell 61 and the fourth connecting shell 62 is further arranged between the third connecting shell 61 and the spline 64, the linkage mechanism is connected with the spline 64 and pushes the spline 64 to be separated from the spline groove 63 on the fourth connecting shell 62 when the push rod 3 rotates relative to the second connecting part 13.

The baby carriage frame is characterized in that: the link gear include and establish the salient post 71 on first connecting shell 41 along axial direction, block gear 44 on be equipped with the vacancy 72 that gives way for salient post 71 when push rod 3 rotates for second connecting portion 13 relatively, salient post 71 extend to in the vacancy 72, first sealed cavity in still be equipped with swivel becket 73, swivel becket 73 on be equipped with and stretch into in the vacancy 72 and can be pushed around the axial line pivoted bulge 74 of first connecting shell 41 by salient post 71, bulge 74 on be connected with the cable 75 that extends to in first connecting portion 12, fourth connecting shell 62 and spline 64 between be equipped with and be connected with the cable 75 and can be pulled by cable 75 when bulge 74 rotates, and then drive spline 64 lateral shifting's the piece of driving about.

The baby carriage frame is characterized in that: the actuating member includes an inclined plane boss 761 provided on the fourth connection housing 62 and having an inclined surface, an actuating block 762 capable of moving longitudinally and transversely in the fourth connection housing 62 is provided between the inclined plane boss 761 and the spline 64, the cable 75 is connected to the actuating block 762, an actuating inclined plane 763 capable of cooperating with the inclined surface on the inclined plane boss 761 to move the actuating block 762 transversely is provided on the actuating block 762, and a second return spring 764 capable of driving the actuating block 762 to return radially is further provided in the first connection portion 12.

The baby carriage frame is characterized in that: the first connecting portion 12, the second connecting portion 13 and the rear stay 11 are Y-shaped, and the second connecting portion 13 extends in a vertical direction when the stroller frame is unfolded.

The baby carriage frame is characterized in that: second connecting portion 13 on be equipped with the installation department 131 that is used for demountable installation seat subassembly 8, seat subassembly 8 including demountable connection in installation department 131 on mounting bracket 81 with rotate the seat pocket 82 of connecting on mounting bracket 81, mounting bracket 81 and seat pocket 82 between be equipped with the first locking structure that can lock the two.

The baby carriage frame is characterized in that: the seat pocket 82 comprises a front rod 821 rotatably connected to the mounting rack 81 and a rear rod 822 rotatably connected to the front rod 821, a second locking structure is arranged between the front rod 821 and the rear rod 822 and can lock the front rod 821 and the rear rod 822, the second locking structure comprises a left shell 911 arranged on the rear rod 822 and a right shell 912 arranged on the front rod 821 and rotatably connected to the left shell 911, a third sealed cavity is defined between the left shell 912 and the right shell 912, a sliding block 913 capable of sliding relative to the third sealed cavity is arranged in the third sealed cavity, a clamping protrusion 9121 is arranged in the right shell 912, a clamping groove 9131 capable of being clamped or separated from the clamping protrusion 9121 when the sliding block 913 slides is arranged on the sliding block 913, a linkage piece 914 capable of pulling the sliding block 913 to separate the clamping groove 9131 from the clamping protrusion 9121 when the sliding block 913 moves is further arranged on the sliding block 913, a third spring 915 which can press the sliding block 913 to fix the engaging groove 9131 and the engaging protrusion 9121 in a snap-fit manner when the seat pocket 82 is in the unfolded state is arranged between the left casing 911 and the sliding block 913, and an operation key 916 for operating the rear pull linkage 914 is further arranged on the rear rod 822.

The baby carriage frame is characterized in that: the seat pocket 82 is further rotatably connected with a handle rack 83, the lower end of the handle rack 83 is connected with a connecting shell 831, the connecting shell 831 is rotatably connected with a left shell 911 on a rear rod 822, a positioning bulge 832 is arranged in the connecting shell 831, an arc-shaped groove 9111 which can enable the positioning bulge 832 to slide in and to enable the handle rack 83 to be drawn close to the front rod 821 is arranged in the left shell 911, a first stop block is further arranged on the peripheral side of the right shell 912, a second stop block 833 which is matched with the first stop block to prevent the handle rack 83 from rotating towards the rear rod 822 when the seat pocket is unfolded is further arranged on the connecting shell 831, the arc-shaped groove 9111 comprises a first stop edge 9112 for positioning a folding position and a second stop edge 9113 for positioning an unfolding position, when the rear rod rotates and folds relative to the front rod, the first stop edge 9112 touches the positioning bulge 9112 and pushes the positioning bulge 832 to enable the handle rack 83 to rotate and draw close to the front rod 821, during the rotation and unfolding of the rear rod 822 relative to the front rod 821, the second retaining edge 9113 touches the positioning projection 832 and pushes the positioning projection 832 to make the handle frame 83 rotate and unfold relative to the front rod 821, and in the seat unfolding position, the first retaining block 833 and the second retaining block 833 abut against each other to make the handle frame 83 unfold and fix relative to the seat pocket 82.

Compared with the prior art, the utility model has the following advantages:

1. when the baby carriage frame is folded, the first locking mechanism is operated to unlock the push rod and the second connecting portion, the push rod can rotate after the second connecting portion and the push rod are unlocked, and the push rod can drive the second locking mechanism between the front support rod and the first connecting portion to unlock through the linkage mechanism in the rotating process, so that the front support rod and the first connecting portion can rotate relatively. After the current vaulting pole and the unblock of first connecting portion, upwards mention the perambulator frame and can realize that push rod and preceding vaulting pole all draw close foldingly to the back vaulting pole. In the frame structure of the baby carriage, the first locking mechanism, the linkage mechanism and the second locking mechanism are arranged in an inner space defined by the front support rod, the first connecting portion, the second connecting portion and the push rod, the external structure of the whole baby carriage is very simple and compact, the number of connecting rod rods is small, the size is small after folding, unlocking of the rods is realized through linkage control during folding unlocking, multiple unlocking positions are realized through one-time unlocking operation, and the folding operation is very convenient and fast.

2. When the push rod rotates relative to the second connecting part, the protruding column on the first connecting shell rotates along with the push rod, the protruding column pushes the protruding part in the first sealing cavity in the rotating process, so that the protruding part rotates around the axis of the first connecting shell, the protruding part pulls the actuating block in the fourth connecting shell to longitudinally move through the pull rope on the protruding part in the rotating process, and as the inclined plane boss is arranged on the fourth connecting shell and the actuating inclined plane matched with the inclined plane boss is arranged on the actuating block, the actuating block is pushed to transversely move when the actuating block longitudinally moves, so that the spline is pushed to be separated from the spline groove on the fourth connecting shell, the unlocking of the second locking mechanism is realized, and the front support rod can rotate relative to the first connecting part. Therefore, only the push rod is required to rotate to unlock the front support rod and the first connecting portion, the whole design is ingenious, and the operation is convenient and fast, so that the baby carriage frame is compact in structure, small in size after being folded and convenient to carry.

3. The folding luggage rack is simple and compact in structure, convenient to fold and operate, small in size after being folded, capable of being placed on an airplane luggage rack or in an automobile trunk, convenient to carry, small in occupied space and suitable for popularization and application.

[ description of the drawings ]

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

FIG. 2 is a side view showing an expanded state of embodiment 1 of the present invention;

FIG. 3 is one of exploded views of parts of embodiment 1 of the present invention;

FIG. 4 is an enlarged view at A in FIG. 3;

FIG. 5 is a second exploded view of the parts of embodiment 1 of the present invention;

FIG. 6 is an enlarged view at B in FIG. 5;

FIG. 7 is a third exploded view of the parts of embodiment 1 of the present invention;

FIG. 8 is four exploded views of parts of embodiment 1 of the present invention;

FIG. 9 is a perspective view showing a first usage state of embodiment 2 of the present invention;

FIG. 10 is a perspective view showing a second use state of embodiment 2 of the present invention;

FIG. 11 is a perspective view of a mounted seat assembly of embodiment 2 of the present invention;

fig. 12 is one of exploded views of a seat pocket according to embodiment 2 of the present invention;

FIG. 13 is a second exploded view of a seat pocket according to embodiment 2 of the present invention;

FIG. 14 is one of exploded views of a rear pole and a carrier in embodiment 2 of the present invention;

fig. 15 is a second exploded view of the rear bar and the handle holder according to embodiment 2 of the present invention;

FIG. 16 is a side view showing an expanded state of embodiment 2 of the present invention;

FIG. 17 is a side view of the utility model in example 2 when folded;

figure 18 is a side view of the utility model at the completion of folding example 2.

[ detailed description ] embodiments

The utility model is further described below with reference to the accompanying drawings:

example 1:

as shown in fig. 1 to 8, a stroller frame, which can move from an unfolded position to a folded position, comprises a rear support 1, a front support 2 and a push rod 3, wherein the rear support 1 comprises a rear support 11, the upper end of the rear support 11 extends outward to form a first connecting portion 12 and a second connecting portion 13, the lower end of the rear support 11 is connected with a rear wheel 14, the front support 2 comprises a front support 21 and a front wheel 22 arranged at the lower end of the front support 21, the upper end of the front support 21 is rotatably connected with the first connecting portion 12, the lower end of the push rod 3 is rotatably connected with the second connecting portion 13, a first locking mechanism for locking the second connecting portion 13 and the push rod 3 is arranged between the first connecting portion 12 and the front support 21, a second locking mechanism for locking the first connecting portion 12 and the front support 21 is arranged between the second connecting portion 13 and the push rod 3, and the second locking mechanism can be driven when the push rod 3 rotates relative to the second connecting portion 13 Linkage mechanism of unblock. When the baby carriage frame is folded, the first locking mechanism is firstly operated to unlock the push rod 3 and the second connecting portion 13, after the second connecting portion 13 and the push rod 3 are unlocked, the push rod 3 can rotate, the push rod 3 can drive the second locking mechanism between the front support rod 21 and the first connecting portion 12 to unlock through the linkage mechanism in the rotating process, and therefore the front support rod 21 and the first connecting portion 12 can rotate relatively. After the front stay 21 is unlocked from the first connecting portion 12, the push rod 3 and the front stay 21 can be folded toward the rear stay 11 by lifting up the stroller frame. In the frame structure of the baby carriage, the first locking mechanism, the linkage mechanism and the second locking mechanism are arranged in an inner space defined by the front support rod 21, the first connecting portion 12, the second connecting portion 13 and the push rod 3, the whole baby carriage is very simple and compact in structure, few in connecting rod pieces, small in size after being folded, capable of unlocking the connecting rod pieces through linkage control during folding and unlocking, capable of unlocking the connecting rod pieces at multiple places through one-time unlocking operation, and convenient and fast to fold and operate. The front stay 21 and the front wheel 22 are moved toward the rear stay 11 by rotating against the first connecting portion 12 by their own weight. In this embodiment, a flexible seat bag is not shown to be attached to the push rod 3 for seating an infant.

As shown in fig. 1 and 3 to 6, the first locking mechanism includes a first connecting shell 41 disposed at the lower end of the push rod 3 and a second connecting shell 42 disposed at the upper end of the second connecting portion 13 and enclosing a first sealed cavity with the first connecting shell 41, a plurality of engaging grooves 43 are disposed on the first connecting shell 41 and the second connecting shell 42 along the circumferential direction, an engaging gear 44 capable of moving transversely is disposed in the first sealed cavity, when the push rod 3 is locked with the second connecting portion 13, the engaging gear 44 is engaged with the engaging grooves 43 on the first connecting shell 41 and the second connecting shell 42 simultaneously, when the push rod 3 is unlocked with the second connecting portion 13, the engaging gear 44 is disengaged from the engaging groove 43 on the first connecting shell 41, a first spring 45 is disposed between the second connecting shell 42 and the engaging gear 44 and is capable of engaging the engaging gear 44 with the engaging grooves 43 on the first connecting shell 41 and the second connecting shell 42 simultaneously, a driving member capable of driving the engaging gear 44 to move laterally is further provided between the first connecting housing 41 and the engaging gear 44. When the stroller frame needs to be folded, the driving member drives the engaging gear 44 to move laterally, the first spring 45 is compressed, the engaging gear 44 is disengaged from the engaging groove 43 of the first connecting shell 41, and the push rod 3 can rotate relative to the second connecting portion 13. The whole structure is very simple and compact.

As shown in fig. 3 to 6, the driving member includes a driving rod 461 capable of moving longitudinally in the push rod 3, a driving inclined plane 462 is disposed on the driving rod 461, a driving block 463 capable of moving transversely to push the engaging gear 44 to move is disposed between the driving rod 461 and the engaging gear 44, an engaging inclined plane 464 capable of engaging with the driving inclined plane 462 to push the driving block 463 to move transversely by the driving rod 461 is disposed on the driving block 463, and a return spring 465 capable of pushing the driving rod 461 to return is further disposed in the push rod 3. When the frame of the stroller needs to be folded, the driving rod 461 is operated to longitudinally move the driving rod 461, the driving rod 461 pushes the matching inclined plane 464 on the driving block 463 through the driving inclined plane 462 on the driving rod 461 in the longitudinal moving process, so that the driving block 463 transversely moves, and the driving block 463 pushes the clamping gear 44 to be separated from the clamping groove on the first connecting shell 41 in the transverse moving process, thereby unlocking the first locking mechanism.

As shown in fig. 1 and fig. 3 to 6, a handle 5 is provided inside the push rod 3 to slide therein to push the driving rod 461 to slide. The arrangement of the hand push handle 5 can prolong the push rod 3, so that a user can conveniently push the baby carriage to walk. When the folding device needs to be folded, the handle 5 pushes the driving rod 461 to longitudinally slide downwards, so that the driving block 463 pushes the clamping gear 44 to transversely move, the first locking mechanism is unlocked, the operation is very convenient and fast, and the handle 5 is also folded in the push rod 3 when the folding device is folded.

As shown in fig. 7 to 8, the second locking mechanism includes a third connecting shell 61 disposed at the upper end of the front stay 21 and a fourth connecting shell 62 disposed on the first connecting portion 12 and enclosing a second sealed cavity with the third connecting shell 61, a plurality of spline grooves 63 are disposed on the third connecting shell 61 and the fourth connecting shell 62 along the circumferential direction, a spline 64 capable of moving transversely in the second sealed cavity is disposed in the second sealed cavity, when the front stay 21 is locked with the first connecting portion 12, the spline 64 is engaged with the spline grooves 63 on the third connecting shell 61 and the fourth connecting shell 62 at the same time, when the front stay 21 is unlocked with the first connecting portion 12, the spline 64 is disengaged from the spline groove 63 on the fourth connecting shell 62, a second spring 65 is disposed between the third connecting shell 61 and the fourth connecting shell 64 and is engaged with the spline grooves 63 on the third connecting shell 61 and the fourth connecting shell 62 at the same time, the linkage mechanism is connected with the spline 64 and pushes the spline 64 to be separated from the spline groove 63 on the fourth connecting shell 62 when the push rod 3 rotates relative to the second connecting part 13. When the baby carriage frame is folded, the first locking mechanism is unlocked, the push rod 3 rotates relative to the second connecting portion 13, and the linkage mechanism is connected with the spline 64, so that transverse acting force can be applied to the spline 64 through the linkage mechanism in the rotating process of the push rod 3, the spline 64 is separated from the spline groove 63 on the fourth connecting shell 62, the unlocking of the second locking mechanism is realized, linkage control is realized, and the folding operation of the baby carriage frame is very simple and rapid.

As shown in fig. 7 to 8, the linkage mechanism includes a protruding column 71 disposed on the first connecting shell 41 along the axial direction, the engaging gear 44 is provided with a vacant site 72 that gives way for the protruding column 71 when the push rod 3 rotates relative to the second connecting portion 13, the protruding column 71 extends into the vacant site 72, the first sealing cavity is further provided with a protruding portion 74 that extends into the vacant site 72 and can be pushed by the protruding column 71 to rotate around the axis of the first connecting shell 41, the protruding portion 74 is connected with a cable 75 that extends into the first connecting portion 12, the first sealing cavity is provided with a rotating ring 73, the protruding portion 74 is disposed on the rotating ring 73, the fourth connecting shell 62 and the spline 64 are provided with a driving member that is connected with the cable 75 and can be pulled by the cable 75 when the protruding portion 74 rotates, and further drives the spline 64 to move transversely. When the push rod 3 rotates relative to the second connecting portion 13, the protruding column 71 on the first connecting shell 41 rotates along with the push rod 3, in the rotating process, the protruding column 71 pushes the protruding portion 74 in the first sealed cavity, so that the protruding portion 74 rotates around the axis of the first connecting shell 41, the protruding portion 74 drives the piece in the fourth connecting shell 62 through the pulling cable 75 on the protruding portion 74 in the rotating process, the driving piece pushes the spline 64 to move transversely when acting, so that the spline 64 is separated from the spline groove 63 on the fourth connecting shell 62, the unlocking of the second locking mechanism is realized, and the front support rod 21 can rotate relative to the first connecting portion 12. Therefore, the unlocking of the front stay bar 21 and the first connecting part 12 can be realized only by rotating the push rod 3, the whole design is very ingenious, and the operation is very convenient and fast, so that the baby carriage frame has a compact structure, and is small in volume and convenient to carry after being folded.

As shown in fig. 7 to 8, the actuating member includes a slope protrusion 761 provided on the fourth connection housing 62 and having an inclined surface, an actuating block 762 capable of moving longitudinally and transversely in the fourth connection housing 62 is provided between the slope protrusion 761 and the spline 64, the cable 75 is connected to the actuating block 762, an actuating slope 763 capable of cooperating with the inclined surface on the slope protrusion 761 to move the actuating block 762 transversely is provided on the actuating block 762, and a second return spring 764 capable of driving the actuating block 762 to radially return is further provided in the first connection portion 12. When the push rod 3 rotates relative to the second connecting portion 13, the protruding column 71 on the first connecting shell 41 rotates along with the push rod 3, in the rotating process, the protruding column 71 pushes the protruding portion 74 in the first sealing cavity, so that the protruding portion 74 rotates around the axis of the first connecting shell 41, the protruding portion 74 drives the block 762 to move longitudinally through pulling of the cable 75 on the protruding portion 74 in the rotating process, because the inclined boss 761 is arranged on the fourth connecting shell 62, the driving block 762 is provided with the driving inclined surface 763 matched with the inclined boss 761, when the driving block 762 moves longitudinally, the driving block 762 is also pushed to move transversely, so that the spline 64 is pushed to be separated from the spline groove 63 on the fourth connecting shell 62, unlocking of the second locking mechanism is achieved, and the front support rod 21 can rotate relative to the first connecting portion 12. Therefore, the driving block 762 which moves longitudinally can move transversely through the matching of the fixed inclined plane boss 761 and the driving block 762, so that the transverse movement of the spline 64 is realized, the unlocking is completed, the design is ingenious, and the operation is very convenient and fast.

As shown in fig. 1 and 2, the first connecting portion 12, the second connecting portion 13 and the rear stay 11 are Y-shaped, and when the stroller frame is unfolded, the second connecting portion 13 extends in a vertical direction, so that the stroller frame is simple and compact in structure and flexible and smooth to fold.

Example 2:

as shown in fig. 9 to 18, embodiment 2 differs from embodiment 1 in that: second connecting portion 13 on be equipped with the installation department 131 that is used for demountable installation seat subassembly 8, seat subassembly 8 including demountable connection in installation department 131 on mounting bracket 81 with rotate the seat pocket 82 of connecting on mounting bracket 81, mounting bracket 81 and seat pocket 82 between be equipped with the first locking structure that can lock the two. Therefore, in the present embodiment, the seat assembly 8 is provided to replace the flexible seat bag in embodiment 1, thereby facilitating the seating of the infant. Of course, the angle between the seat pocket 82 and the mounting bracket 81 can be adjusted, the seat pocket 82 can be used as a baby seat when being obliquely arranged relative to the mounting bracket 81, the seat pocket 82 can be used as a sleeping basket when being laid flat, and the seat pocket 82 and the mounting bracket 81 are locked through a spline structure.

As shown in fig. 11 to 13, the seat pocket 82 includes a front rod 821 rotatably connected to the mounting frame 81 and a rear rod 822 rotatably connected to the front rod 821, a second locking structure is disposed between the front rod 821 and the rear rod 822 for locking the front rod 821 and the rear rod 822, the second locking structure includes a left housing 911 disposed on the rear rod 822 and a right housing 912 disposed on the front rod 821 and rotatably connected to the left housing 911, a third sealed cavity is defined between the left housing 911 and the right housing 912, a sliding block 913 is disposed in the third sealed cavity and can slide relative to the third sealed cavity, an engaging protrusion 9121 is disposed in the right housing 912, an engaging groove 9131 capable of engaging with or disengaging from the engaging protrusion 9121 when the sliding block 913 slides is disposed on the sliding block 913, a linkage 914 for disengaging the engaging groove 9131 from the engaging protrusion 9121 when the sliding block 913 moves is further disposed on the sliding block 913, a third spring 915 which can press the sliding block 913 to fix the engaging groove 9131 and the engaging protrusion 9121 in a snap-fit manner when the seat pocket 82 is in the unfolded state is arranged between the left casing 911 and the sliding block 913, and an operation key 916 for operating the rear pull linkage 914 is further arranged on the rear rod 822. The link 914 is a cable.

When the stroller frame needs to be folded, the seat pocket 82 needs to be folded synchronously, when the seat pocket 82 is folded, the second locking structure needs to be unlocked, when the second locking structure is unlocked, the operating key 916 pulls the linkage piece 914 to move, the linkage piece 914 pulls the slider 913 to move, so that the clamping groove 9131 on the slider 913 is separated from the clamping protrusion 9121 on the right shell 912, and at this time, the rear rod 822 can be pushed to rotate and approach relative to the front rod 821, so that the seat pocket 82 is folded.

As shown in fig. 11 to 15, the seat pocket 82 is further rotatably connected with a handle frame 83, the lower end of the handle frame 83 is connected with a connecting shell 831, the connecting shell 831 is rotatably connected with a left shell 911 on the rear rod 822, a positioning protrusion 832 is arranged in the connecting shell 831, an arc-shaped groove 9111 which can enable the positioning protrusion 832 to slide in and enable the handle frame 83 to be drawn close to the front rod 821 is arranged in the left shell 911, a first stopper is further arranged on the periphery of the right shell 912, a second stopper 833 which is matched with the first stopper to prevent the handle frame 83 from rotating towards the rear rod 822 when the seat pocket is unfolded is further arranged on the connecting shell 831, the arc-shaped groove 9111 comprises a first blocking edge 9112 for positioning a folding position and a second blocking edge 9113 for positioning an unfolding position, when the rear rod rotates and folds relative to the front rod, the first blocking edge 9112 touches the positioning protrusion 832 and pushes the positioning protrusion to enable the handle frame 83 to rotate and draw close to the front rod 821, during the rotation and unfolding of the rear rod 822 relative to the front rod 821, the second retaining edge 9113 touches the positioning projection 832 and pushes the positioning projection 832 to make the handle frame 83 rotate and unfold relative to the front rod 821, and in the seat unfolding position, the first stop block and the second stop block 833 abut against each other to make the handle frame 83 unfold and fix relative to the seat pocket 82.

When the handle frame 83 is mounted on the seat pocket 82, the seat pocket 82 is convenient to carry, when the frame of the baby carriage needs to be folded, the seat pocket 82 and the handle frame 83 need to be folded, in the process that the rear rod 822 rotates and draws close relative to the front rod 821, the first blocking edge 9112 in the arc-shaped groove 9111 touches the positioning protrusion 832 and pushes the positioning protrusion 832 to enable the connecting shell 831 to rotate, when the connecting shell 831 rotates, the handle frame 83 rotates along with the connecting shell 831 and rotates and draws close to the front rod 821, and the whole seat pocket 82 can be folded only by rotating the rear rod 822;

when the seat pocket 82 needs to be unfolded, the rear rod 822 only needs to be pushed to rotate backwards relative to the front rod 821, the second stopping edge 9113 touches the positioning protrusion 832 and pushes the positioning protrusion 832 to enable the handle frame 83 to rotate and unfold relative to the front rod 821 in the rotating and unfolding process of the rear rod 822 relative to the front rod 821, and in the unfolded position of the seat pocket, the first stopping block 833 and the second stopping block 833 abut against each other to enable the handle frame 83 to unfold and be fixed relative to the seat pocket 82. As shown in fig. 9, when the seat pocket 82 rotates with respect to the front stay 21 and the handle frame 83 is disposed toward the front, the handle frame 83 can also be used as a front armrest of the stroller, and a baby can hold the handle frame 83 while sitting in the seat pocket 82, thereby making the seating of the baby safer.

As shown in fig. 14 to 15, a handle frame 83 is detachably connected to the seat pocket 82, and a third locking structure is further disposed between the handle frame 83 and the seat pocket 82.

As shown in fig. 14 to 15, the third locking structure includes a left housing 911 disposed on the seat pocket 82 and a connecting housing 831 connected to the left housing 911, a cavity 92 is disposed between the left housing 911 and the connecting housing 831, a clamping block 93 inserted into the cavity 92 is connected to the handle frame 83, an unlocking button 94 capable of moving left and right is disposed on the connecting housing 831, a clamping portion 941 clamped or disengaged with the clamping block 93 when the unlocking button 94 moves left and right is disposed on the unlocking button 94, and a fourth spring 95 capable of resetting the unlocking button 94 is further disposed between the unlocking button 94 and the connecting housing 831; the clamping block 93 is provided with a clamping groove 931 matched with the clamping portion 941.

The handle frame 83 can be detached from the connecting shell 831, when the handle frame needs to be detached, the unlocking button 94 is pressed, the unlocking button 94 moves rightwards to enable the clamping portion 941 to be separated from the clamping groove 931 in the clamping block 93, and the handle frame 83 can be pulled out of the cavity 92 by pulling the clamping block 93 upwards;

when the handle frame 83 needs to be mounted on the connecting shell 831, the engaging block 93 is inserted into the cavity 92, and the handle frame 83 is pressed downward, the engaging block 93 presses the unlocking button 94 to move, and when the engaging portion 941 is aligned with the engaging groove 931, the fourth spring 95 pushes the unlocking button 94 to move in the direction opposite to the previous direction, so that the engaging portion 941 is engaged with the engaging groove 931, and the handle frame 83 is fixed in the connecting shell 831.

In this embodiment, when the stroller frame is folded, the rear lever 822 is rotated with respect to the front lever 821 to fold the seat pocket 82, and then the first locking mechanism and the second locking mechanism are unlocked to fold the entire stroller frame.

Claims (10)

1. A stroller frame movable from an unfolded position to a folded position, characterized in that: comprises a rear support piece (1), a front support piece (2) and a push rod (3), wherein the rear support piece (1) comprises a rear support rod (11), the upper end of the rear support rod (11) is provided with a first connecting part (12) and a second connecting part (13) in an extending way towards the outer side, the lower end of the rear support rod (11) is connected with a rear wheel (14), the front support piece (2) comprises a front support rod (21) and a front wheel (22) arranged at the lower end of the front support rod (21), the upper end of the front support rod (21) is rotatably connected with the first connecting part (12), the lower end of the push rod (3) is rotatably connected with the second connecting part (13), a first locking mechanism for locking the second connecting part and the push rod (3) is arranged between the second connecting part (13) and the push rod (3), and a second locking mechanism for locking the first connecting part (12) and the front support rod (21) is arranged between the first connecting part and the push rod (3), and a linkage mechanism which can drive the second locking mechanism to unlock when the push rod (3) rotates relative to the second connecting part (13) is further arranged between the second connecting part (13) and the push rod (3).

2. The stroller frame of claim 1, wherein: the first locking mechanism comprises a first connecting shell (41) arranged at the lower end of the push rod (3) and a second connecting shell (42) arranged at the upper end of the second connecting portion (13) and enclosing with the first connecting shell (41) to form a first sealed cavity, a plurality of first clamping grooves (43) are formed in the first connecting shell (41) and the second connecting shell (42) along the circumferential direction, clamping gears (44) capable of transversely moving in the first sealed cavity are arranged in the first sealed cavity, when the push rod (3) is locked with the second connecting portion (13), the clamping gears (44) are clamped with the first clamping grooves (43) in the first connecting shell (41) and the second connecting shell (42) at the same time, when the push rod (3) is unlocked with the second connecting portion (13), the clamping gears (44) are separated from the first clamping grooves (43) in the first connecting shell (41), and clamping gears (44) are arranged between the second connecting shell (42) and the clamping gears (44) to enable the first clamping gears (44) to be separated from the first clamping gears (44) And a first spring (45) which is used for simultaneously clamping the first clamping groove (43) on the connecting shell (41) and the second connecting shell (42), and a driving component which can drive the clamping gear (44) to transversely move is arranged between the first connecting shell (41) and the clamping gear (44).

3. The stroller frame of claim 2, wherein: the driving component comprises a driving rod (461) capable of longitudinally moving in the push rod (3), a driving inclined surface (462) is arranged on the driving rod (461), a driving block (463) capable of transversely moving to push the clamping gear (44) to move is arranged between the driving rod (461) and the clamping gear (44), a matching inclined surface (464) capable of matching with the driving inclined surface (462) to enable the driving block (463) to be pushed by the driving rod (461) to transversely move is arranged on the driving block (463), a return spring (465) capable of pushing the driving rod (461) to return is further arranged in the push rod (3), and a hand push handle (5) capable of sliding in the push rod (3) to push the driving rod (461) to slide is arranged in the push rod (3).

4. A stroller frame according to claim 2 or 3, characterized in that: the second locking mechanism comprises a third connecting shell (61) arranged at the upper end of the front support rod (21) and a fourth connecting shell (62) arranged on the first connecting portion (12) and surrounding the third connecting shell (61) into a second sealed cavity, a plurality of spline grooves (63) are formed in the third connecting shell (61) and the fourth connecting shell (62) along the circumferential direction, splines (64) capable of transversely moving in the second sealed cavity are arranged in the second sealed cavity, when the front support rod (21) is locked with the first connecting portion (12), the splines (64) are simultaneously clamped with the spline grooves (63) in the third connecting shell (61) and the fourth connecting shell (62), when the front support rod (21) is unlocked with the first connecting portion (12), the splines (64) are separated from the spline grooves (63) in the fourth connecting shell (62), and a spline groove (61) capable of connecting the third connecting shell (61) with the fourth connecting shell (64) is further arranged between the third connecting shell (61) and the splines (64) 62) And the upper spline groove (63) is simultaneously clamped with a second spring (65), and the linkage mechanism is connected with the spline (64) and pushes the spline (64) to be separated from the spline groove (63) on the fourth connecting shell (62) when the push rod (3) rotates relative to the second connecting part (13).

5. The stroller frame of claim 4, wherein: the linkage mechanism comprises a protruding column (71) arranged on the first connecting shell (41) along the axial direction, the clamping gear (44) is provided with a vacancy (72) which gives way for the convex column (71) when the push rod (3) rotates relative to the second connecting part (13), the convex column (71) extends into the empty position (72), a rotating ring (73) is also arranged in the first sealing cavity, the rotating ring (73) is provided with a convex part (74) which extends into the empty position (72) and can be pushed by the convex column (71) to rotate around the axis of the first connecting shell (41), the convex part (74) is connected with a guy cable (75) extending into the first connecting part (12), and an actuating piece which is connected with the inhaul cable (75) and can be pulled by the inhaul cable (75) when the bulge (74) rotates so as to drive the spline (64) to move transversely is arranged between the fourth connecting shell (62) and the spline (64).

6. The stroller frame of claim 5, wherein: the actuating piece comprises an inclined plane boss (761) which is arranged on the fourth connecting shell (62) and is provided with an inclined surface, an actuating block (762) which can move longitudinally and transversely in the fourth connecting shell (62) is arranged between the inclined plane boss (761) and the spline (64), the inhaul cable (75) is connected with the actuating block (762), an actuating inclined plane (763) which can be matched with the inclined surface on the inclined plane boss (761) to enable the actuating block (762) to move transversely is arranged on the actuating block (762), and a second reset spring (764) which can drive the actuating block (762) to reset radially is further arranged in the first connecting part (12).

7. A stroller frame according to claim 2 or 3, characterized in that: the first connecting portion (12), the second connecting portion (13) and the rear support rod (11) are Y-shaped, and when the baby carriage frame is in an unfolded state, the second connecting portion (13) extends in the vertical direction.

8. The stroller frame of claim 7, wherein: second connecting portion (13) on be equipped with installation department (131) that are used for demountable installation seat subassembly (8), seat subassembly (8) including demountable connection in installation department (131) on mounting bracket (81) with rotate seat pocket (82) of connecting on mounting bracket (81), mounting bracket (81) and seat pocket (82) between be equipped with the first locking structure that can lock the two.

9. The stroller frame of claim 8, wherein: the seat pocket (82) comprises a front rod (821) rotatably connected to an installation frame (81) and a rear rod (822) rotatably connected with the front rod (821), a second locking structure capable of locking the front rod (821) and the rear rod (822) mutually is arranged between the front rod (821) and the rear rod (822), the second locking structure comprises a left shell (911) arranged on the rear rod (822) and a right shell (912) arranged on the front rod (821) and rotatably connected with the left shell (911), a third sealing cavity is defined between the left shell (911) and the right shell (912), a sliding block (913) capable of sliding relative to the third sealing cavity is arranged in the third sealing cavity, a clamping protrusion (9121) is arranged in the right shell (912), and a second clamping groove (9131) capable of being clamped or separated from the clamping protrusion (9121) when the sliding block (913) is arranged on the sliding block (913), slider (913) on still be equipped with linkage (914) that can make second block groove (9131) break away from block arch (9121) when pulling slider (913) and move, left side casing (911) and slider (913) between be equipped with and be in when expansion state seat pocket (82) can roof pressure slider (913) and make second block groove (9131) and block protruding (9121) fixed third spring (915) of joint, back pole (822) on still be equipped with operation key (916) that pull linkage (914) after the operation.

10. The stroller frame of claim 9, wherein: seat pocket (82) on still rotate and be connected with handle frame (83), handle frame (83) lower extreme be connected with and connect shell (831), connect left casing (911) on shell (831) and back pole (822) rotate and be connected, connect and be equipped with location arch (832) in shell (831), left casing (911) in be equipped with and supply location arch (832) including slide and make handle frame (83) draw close arc wall (9111) to preceding pole (821), the week side of right casing (912) on still be equipped with first dog, connect shell (831) on still be equipped with when the seat pocket expandes with first dog cooperation and prevent handle frame (83) to back pole (822) pivoted second dog (833), arc wall (9111) include the first flange (9112) of location folding position and the second flange (9113) of location expansion position, when the relative preceding pole of back pole rotates folding in-process, first flange (9112) touch location arch (832) and promote location arch (832) and make handle frame (83) rotate to draw close to preceding pole (821), when back pole (822) rotate the development in-process relatively preceding pole (821), second flange (9113) touch location arch (832) and promote location arch (832) and make handle frame (83) rotate the development relatively preceding pole (821), in the seat pocket development position, first dog and second dog (833) are leaned on each other and are made handle frame (83) expand and fixed relatively seat pocket (82).

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