CN220682463U - Infant handcart - Google Patents

Abstract

The utility model discloses an infant stroller, which comprises front legs (11), wherein the lower ends of the front legs (11) are connected with front wheels (111), the front legs (11) are connected with rear legs (12) which can rotate around a first axis (A) relative to the front legs, the rear legs (12) are connected with rear wheels (121), the rear legs (12) are connected with connecting seats (13) in a rotating mode around a second axis (B), the connecting seats (13) are also connected with stay bar assemblies (14), a linkage piece (15) which can rotate relative to the front legs (11) and the stay bar assemblies (14) is arranged between the front legs (11) and the stay bar assemblies (14), one end of the linkage piece (15) is connected onto the front legs (11) in a rotating mode around a third axis (C), the other end of the linkage piece (15) is connected onto the stay bar assemblies (14) in a rotating mode around a fourth axis (D), and the front legs (11) and the rear legs (12) can be mutually rotated and gathered when the linkage piece (15) rotates around the third axis (C) relative to the front legs (11). The folding device is simple in structure and small in size after folding.

Description

Infant handcart

[ field of technology ]

The utility model relates to an infant stroller.

[ background Art ]

At present, infant pushchairs have become an indispensable item for children in the growing process. Infant pushchairs in the market can be folded or unfolded generally, but the existing infant pushchairs are complex in transmission structure, more in connecting rods and larger in volume after folding. Therefore, people are very desirous of a baby stroller which is convenient to fold and unfold, has a simple structure and is small in size after folding. The utility model further provides a novel embodiment.

[ utility model ]

The utility model aims to overcome the defects of the prior art and provide the baby trolley which is convenient to fold and unfold, simple in folding structure and small in volume after folding.

The utility model is realized by the following technical scheme:

the utility model provides an infant's shallow can follow expansion position and remove to folding position after unlocking locking device, includes front leg 11, front leg 11 lower extreme be connected with front wheel 111, front leg 11 on be connected with relative its around first axis A pivoted back leg 12, back leg 12 on be connected with rear wheel 121, back leg 12 on rotate around second axis B and be connected with connecting seat 13, connecting seat 13 on still be connected with brace component 14, front leg 11 and brace component 14 between be equipped with the link 15 that can rotate relative two, link 15 one end rotate around third axis C and be connected on front leg 11, the other end rotate around fourth axis D and be connected on brace component 14, and when link 15 rotate around relative front leg 11 of third axis C can make front leg 11 and back leg 12 rotate mutually and draw close.

The front leg 11 and the rear leg 12 are arranged in an X-shape when the infant stroller is unfolded.

The supporting rod assembly 14 comprises a front supporting rod 141 connected to the connecting seat 13, a mounting seat 142 is further arranged on the front supporting rod 141, one end of the linkage member 15 is rotatably connected to the mounting seat 142 around a fourth axis D, and the other end of the linkage member 15 is rotatably connected to the front leg 11 around a third axis C.

A torsion spring 3 is also arranged between the mounting seat 142 and the linkage 15.

The stay bar assembly 14 further comprises a rear stay bar 143 disposed on the connecting seat 13 and located at the rear side of the front stay bar 141, and a push rod 144 capable of sliding relative to the rear stay bar 143 is connected to the rear stay bar 143.

The rear leg 12 comprises a rear leg frame 122 which is rotationally connected to the front leg 11 around a first axis A, the lower end of the rear leg frame 122 is rotationally connected to the mounting seat 142 around a second axis B, the rear wheel 121 is connected to the lower end of the rear leg frame 122, the rear leg 12 is further provided with a transverse supporting rod 123 which is transversely connected, and the middle part of the transverse supporting rod 123 is provided with a abdicating part 1231 which can abduct the hand pushing rod 144 when the baby stroller is folded.

The rear stay 143 is also connected with a sliding seat 16 which can slide relatively to the rear stay, the sliding seat 16 is connected with a support rod 17, and a seat pocket 2 which can follow the expansion of the infant stroller when the infant stroller is expanded is arranged among the support rod 17, the front leg 11 and the rear leg 12.

The front leg 11 comprises a front leg frame 112, a connecting part 113 is connected to the front leg frame 112, a front wheel frame 114 is connected to the lower end of the front leg frame 112, the front wheel 111 can rotate at 114360 degrees relative to the front wheel frame on a horizontal plane, a rotating seat 115 is connected to the upper end of the front leg frame 112, and the front end of the linkage 15 is rotatably connected to the rotating seat 115 around a third axis C.

The locking device comprises a first locking device 41 arranged between the sliding seat 16 and the rear stay 143, a second locking component 5 arranged between the sliding seat 16 and the front stay 141, a second locking component 42 arranged between the hand push rod 144 and the rear stay 143, and a third locking component 43 arranged between the linkage 15 and the stay component 14.

The mounting seat 142 is provided with a first supporting surface 1421, and the linkage member 15 is provided with a second supporting surface 151 capable of propping against the first supporting surface 1421 when the infant stroller is unfolded.

Compared with the prior art, the utility model has the following advantages: when the baby stroller needs to be folded, the locking device is unlocked firstly, then the connecting part of the linkage piece and the front leg rotates relatively, at the moment, the front end of the linkage piece rotates around the third axis C relatively to the front leg, the rear end of the linkage piece rotates around the fourth axis D relatively to the stay bar assembly, the linkage piece and the front leg are mutually close, the lower end of the rear leg rotates around the second axis B relatively to the connecting seat under the driving of the linkage piece, and meanwhile, the rear leg also rotates around the first axis A relatively to the front leg, at the moment, the rear leg and the front leg are close, the folding structure is simple, and the folding operation is convenient. After the unlocking device is unlocked, a person can complete the folding of the infant stroller only by rotating the connecting part of the linkage piece and the front leg, and the infant stroller is simple in folding structure and convenient to fold and operate.

[ description of the drawings ]

FIG. 1 is one of the perspective views of the infant stroller of the present utility model;

FIG. 2 is a second perspective view of the stroller of the present utility model;

FIG. 3 is a side view of the infant stroller of the present utility model;

FIG. 4 is a perspective view of the infant stroller of the present utility model folded;

FIG. 5 is a side view of the infant stroller of the present utility model folded;

FIG. 6 is a cross-sectional view of the infant stroller of the present utility model;

FIG. 7 is an enlarged view of area E of FIG. 6;

FIG. 8 is an enlarged view of area F of FIG. 6;

FIG. 9 is an exploded view of the infant stroller of the present utility model;

FIG. 10 is a perspective view of a slider in the stroller of the present utility model;

FIG. 11 is an exploded view of the second latch and slider of the stroller of the present utility model;

fig. 12 is an exploded view of the sliding connector and the sliding connector of the stroller of the present utility model.

[ detailed description ] of the utility model

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

as shown in fig. 1 to 12, the present utility model provides a stroller capable of moving from an unfolded position to a folded position after unlocking a locking device, comprising a front leg 11, wherein a front wheel 111 is connected to the lower end of the front leg 11, a rear leg 12 capable of rotating around a first axis a is connected to the front leg 11, a rear wheel 121 is connected to the rear leg 12, a connecting seat 13 is rotatably connected to the rear leg 12 around a second axis B, a brace assembly 14 is further connected to the connecting seat 13, a linkage 15 capable of rotating around the two is provided between the front leg 11 and the brace assembly 14, one end of the linkage 15 is rotatably connected to the front leg 11 around a third axis C, the other end of the linkage 15 is rotatably connected to the brace assembly 14 around a fourth axis D, and the front leg 11 and the rear leg 12 can be mutually rotated close when the linkage 15 rotates around the third axis C relative to the front leg 11.

When the baby stroller needs to be folded, the locking device is unlocked firstly, then the joint of the linkage piece 15 and the front leg 11 rotates relatively, at the moment, the front end of the linkage piece 15 rotates around the third axis C relative to the front leg, the rear end of the linkage piece 15 rotates around the fourth axis D relative to the stay bar assembly 14, the linkage piece 15 and the front leg 11 are mutually close, the lower end of the rear leg 12 rotates around the second axis B relative to the connecting seat 13 under the driving of the linkage piece 15, and meanwhile, the rear leg 12 also rotates around the first axis A relative to the front leg 11, at the moment, the rear leg 11 is close to the front leg 11, the folding structure is simple, and the folding operation is convenient. After the unlocking device is unlocked, a person can complete the folding of the infant stroller only by relatively rotating the connecting part of the linkage piece 15 and the front leg 11, and the infant stroller is simple in folding structure and convenient to fold and operate.

The front leg 11 and the rear leg 12 are arranged in an X-shaped mode when the infant stroller is unfolded, so that the infant stroller is more stable and safer to support.

The supporting rod assembly 14 comprises a front supporting rod 141 connected to the connecting seat 13, a mounting seat 142 is further arranged on the front supporting rod 141, one end of the linkage member 15 is rotatably connected to the mounting seat 142 around a fourth axis D, and the other end of the linkage member 15 is rotatably connected to the front leg 11 around a third axis C. When the joint of the linkage member 15 and the front leg 11 rotates relatively, the front end of the linkage member 15 rotates around the third axis C relative to the front leg 11, and at this time, the rear end of the linkage member 15 rotates around the fourth axis D relative to the mounting seat 142, the linkage member 15 and the front leg 11 are close to each other, and meanwhile, the linkage member 15 and the front stay bar 141 are also gradually close to each other, so that the occupied volume of the baby stroller is minimized when the baby stroller is folded.

The mounting seat 142 is provided with a first supporting surface 1421, and the linkage member 15 is provided with a second supporting surface 151 capable of propping against the first supporting surface 1421 when the infant stroller is unfolded. When the stroller is unfolded, the second supporting surface 151 on the linkage 15 and the first supporting surface 1421 on the mounting seat 142 are propped against each other, so that the stroller is more stable and safer to support when being unfolded.

The stay bar assembly 14 further comprises a rear stay bar 143 disposed on the connecting seat 13 and located at the rear side of the front stay bar 141, and a push rod 144 capable of sliding relative to the rear stay bar 143 is connected to the rear stay bar 143. The front stay bar 141 and the rear stay bar 143 are also provided with a fixing seat 145 which can be connected with the tops of the front stay bar 141 and the rear stay bar 143 and fix the tops of the front stay bar and the rear stay bar, so that the front stay bar 141 and the rear stay bar 143 are connected more firmly and do not shake relative to the connecting seat 13.

The rear stay 143 is also connected with a sliding seat 16 which can slide relatively to the rear stay, the sliding seat 16 is connected with a support rod 17, and a seat pocket 2 which can follow the expansion of the infant stroller when the infant stroller is expanded is arranged among the support rod 17, the front leg 11 and the rear leg 12. The seat 2 is convenient for the infant to sit. The seat pocket 2 can be unfolded along with the unfolding of the infant stroller when the infant stroller is unfolded or folded, and can be folded along with the folding of the infant stroller, so that the infant stroller occupies a small volume when being folded.

The front leg 11 comprises a front leg frame 112, a connecting part 113 is connected to the front leg frame 112, a front wheel frame 114 is connected to the lower end of the front leg frame 112, the front wheel 111 can rotate 360 degrees relative to the front wheel frame 114 on a horizontal plane, a rotating seat 115 is connected to the upper end of the front leg frame 112, and the front end of the linkage 15 is connected to the rotating seat 115 in a rotating manner around a third axis C. The front wheels 111 can be rotated 90 ° from a forward setting to a parallel, closed rear leg 12 setting when folded.

The rear leg 12 comprises a rear leg frame 122 which is rotationally connected to the front leg 11 around a first axis A, the lower end of the rear leg frame 122 is rotationally connected to the mounting seat 142 around a second axis B, the rear wheel 121 is connected to the lower end of the rear leg frame 122, the rear leg 12 is further provided with a transverse supporting rod 123 which is transversely connected, and the middle part of the transverse supporting rod 123 is provided with a abdicating part 1231 which can abduct the hand pushing rod 144 when the baby stroller is folded. When the rear leg frame 122 rotates relative to the front leg 11 and the connecting seat 13 and is close to the supporting rod assembly 14, in order to avoid the push rod 144 from pushing against the transverse supporting rod 123 when sliding and folding downwards, the transverse supporting rod 123 is provided with a yielding part 1231, the yielding part 1231 is an arc-shaped groove, so that the push rod 144 can be yielding, and the push rod 144 is prevented from being blocked.

A torsion spring 3 is also arranged between the mounting seat 142 and the linkage 15. The torsion spring 3 can apply elastic force when the linkage member 15 rotates and folds relative to the mounting seat 142, so that the linkage member 15 rotates and folds relative to the mounting seat 142 more smoothly.

The locking device comprises a first locking device 41 arranged between the sliding seat 16 and the rear stay 143, a second locking component 5 arranged between the sliding seat 16 and the front stay 141, a second locking component 42 arranged between the hand push rod 144 and the rear stay 143, and a third locking component 43 arranged between the linkage 15 and the stay component 14. When the stroller of the present utility model needs to be folded, the first locking device 41, the secondary locking assembly 5, the second locking assembly 42 and the third locking assembly 43 need to be unlocked. The first locking device 41, the second locking assembly 5, the second locking assembly 42 and the third locking assembly 43 may be existing latch locks or locking bolts.

The sliding seat 16 and the rear stay 143 between which is provided with a first locking device 41, the first locking device 41 comprises a first locking position 411 arranged on the rear stay 143, the sliding seat 16 is connected with a first locking element 412 which can slide relatively to the sliding seat to be blocked in or separated from the first locking position 411, the sliding seat 16 is connected with a first operating element 413 which can rotate relatively to the sliding seat to move between a locking position and an unlocking position, the first operating element 413 is provided with a pushing protrusion 4131 which can push the first locking element 412 to keep the first locking element 412 locked when the first operating element 413 moves from the unlocking position to the locking position, and a first elastic element 414 which can push the first locking element 412 to reset is arranged between the first locking element 412 and the sliding seat 16. When the sliding seat 16 and the supporting rod 17 need to be folded, the first operating member 413 is first shifted to rotate upwards, at this time, the pushing protrusion 4131 on the first operating member 413 is gradually separated from the first locking member 412, when the pushing protrusion 4131 is separated from the first locking member 412, the first elastic element 414 pushes the first locking member 412 to slide backwards relative to the sliding seat 16, and the first locking member 412 is gradually separated from the first locking member 411, at this time, the sliding seat 16 can slide downwards along the rear supporting rod 143 to drive the supporting rod 17 and the seat pocket 2 to be folded.

The sliding seat 16 and the front supporting rod 141 are provided with two locking assemblies 5, each two locking assemblies 5 comprises a locking position 51 arranged on the front supporting rod 141, a rotating piece 52 capable of rotating relative to the sliding seat 16 is connected in the sliding seat, the front end of the rotating piece 52 is provided with a clamping hook portion 521 capable of being clamped with the locking position 51, the rear end of the rotating piece 52 is provided with a propping portion 522, the hand pushing rod 144 is provided with an unlocking portion 1441 capable of pushing the propping portion 144 to enable the clamping hook portion 521 to be separated from the locking position 51 when the hand pushing rod 144 slides and folds relative to the rear supporting rod 143, and an elastic reset piece 53 capable of resetting the pushing rotating piece 52 is arranged between the rotating piece 52 and the sliding seat 16. The elastic restoring member 53 is a torsion spring. The provision of the two-way locking assembly 5 makes the locking of the sliding seat 16 with the rear stay 143 more stable. When the sliding seat 16 and the supporting rod 17 need to be folded, the first locking device 41 is unlocked first, then the hand push rod 144 is pushed to slide downwards relative to the rear supporting rod 143, the unlocking part 1441 on the rear supporting rod 143 gradually contacts with the propping part 522 on the rotating member 52 in the process of sliding downwards, when the propping part 522 is pushed, the propping part 522 drives the whole rotating member 52 to rotate, the rotating member 52 drives the hook part 521 at the front end of the rotating member to rotate when rotating, and at the moment, the hook part 521 is separated from the locking position 51 on the front supporting rod 141 and fully enters the sliding seat 16, and the sliding seat 16 can slide downwards relative to the rear supporting rod 143 to be folded.

The push rod 144 is internally provided with a sliding block 423 capable of driving the second locking piece 422 to slide and separate from the second locking piece 421 when being pulled, the push rod 144 is provided with a second operating piece 424 capable of rotating relative to the push rod 144, a guy cable 425 capable of driving the sliding piece 423 to slide when the second operating piece 424 rotates is arranged between the second operating piece 424 and the sliding piece 423, a second elastic piece 426 capable of resetting the second operating piece 424 is arranged between the second operating piece 424 and the push rod 144, a third elastic piece 427 capable of resetting the second locking piece 423 is arranged between the sliding piece 423 and the push rod 144, and a fourth elastic piece 427 capable of resetting the second locking piece 422 is arranged between the second locking piece 422 and the push rod 144.

When the push rod 144 needs to slide and fold relative to the rear supporting rod 143, the lower end of the second operating member 424 is pressed, the upper end of the second operating member 424 drives the pull cable 425 to move, the pull cable 425 moves upwards to drive the sliding block 423 to move upwards, and the sliding block 423 moves to drive the second locking piece 422 to slide relative to the push rod 144 and separate from the second locking piece 421, so that the push rod 144 can slide and fold relative to the rear supporting rod 143 downwards.

The second locking member 422 is provided with a first inclined sliding surface 4221, and the sliding block 423 is provided with a second inclined sliding surface 4231 which can push the first inclined sliding surface 4221 to enable the second locking member 422 to slide transversely relative to the push rod 144 when the sliding block 423 slides vertically relative to the push rod 144. The cooperation of the second inclined sliding surface 4231 and the first inclined sliding surface 4221 enables the sliding block 423 to vertically slide relative to the push rod 144, so as to push the second locking member 422 to slide laterally relative to the push rod 144 and disengage from the second locking position 421.

The novel push rod comprises a linkage piece 15 and a support rod assembly 14, wherein a third locking assembly 43 capable of locking the linkage piece 15 and the support rod assembly 14 is arranged between the linkage piece 15 and the support rod assembly 14, the third locking assembly 43 comprises a clamping pin 431 arranged on a front leg 11, a sliding piece 432 capable of sliding relative to the linkage piece 15 is arranged on the linkage piece 15, a third locking position 4321 capable of being clamped with or separated from the clamping pin 431 when the linkage piece 15 slides relative to the linkage piece 432 is arranged on the sliding piece 432, a sliding unlocking piece 433 capable of sliding relative to the front support rod 141 to push the sliding piece 432 is arranged in the front support rod 141, a sliding connecting piece 434 capable of sliding relative to the front support rod 141 is also connected in the front support rod 141, a sliding unlocking piece 435 capable of sliding relative to the sliding connecting piece 434 is connected in the connecting seat 13, a slope 436 capable of sliding relative to the sliding unlocking piece 435 is arranged on the pushing rod 144, a first elastic element capable of resetting the sliding piece 432 is arranged between the sliding piece 432 and the front support rod 141, and a second elastic pushing element capable of resetting the sliding 434 is arranged between the sliding connecting piece 434 and the pushing piece 141. The third locking position 4321 is a clamping groove. The sliding unlocking member 435 is partially positioned in the rear stay 143 and can be pushed by the pushing inclined surface 436, and the sliding unlocking member 435 is also partially positioned in the front stay 141 and used for pushing the sliding connecting member 434. When the linkage 15, the front leg 11 and the rear leg 12 need to be folded, the third locking assembly 43 needs to be unlocked first, the push rod 144 is pushed to slide downwards relative to the rear supporting rod 143, the pushing inclined surface 436 on the push rod 144 is pushed to contact with the sliding unlocking member 435 first when the push rod 144 slides downwards, and gradually pushes against the sliding unlocking member 435 to slide transversely relative to the connecting seat 13, the front end of the sliding unlocking member 435 pushes the sliding connecting member 434 to slide downwards relative to the front supporting rod 141, the sliding unlocking member 433 is driven to slide downwards when the sliding connecting member 434 slides downwards, the inclined surface on the sliding unlocking member 433 pushes the inclined surface on the sliding member 432, at this moment, the sliding member 432 slides transversely relative to the linkage 15, the third locking position 4321 on the sliding member 432 is separated from the clamping pin 431 when the sliding member 432, and at this moment, the front leg 11 can rotate and fold with the linkage 15.

The sliding connector 434 is provided with a third inclined sliding surface 4341, and the sliding unlocking member 435 is provided with a fourth inclined sliding surface 4351 which can push the third inclined sliding surface 4341 to drive the sliding connector 434 to slide when the sliding unlocking member 435 slides.

The cooperation of the third ramp 4341 and the fourth ramp 4351 enables the sliding connection 434 to slide vertically relative to the front strut 141 as the sliding release 435 slides laterally relative to the connection block 12, the front strut 141 and the rear strut 143.

The sliding member 432 is provided with a plurality of bar-shaped holes 4322, and the linkage member 15 is provided with a shaft pin 152 which transversely penetrates through the bar-shaped holes 15. The bar-shaped hole 4322 and the shaft pin 152 are engaged to guide the sliding member 432 to slide, and the size of the bar-shaped hole 4322 also limits the sliding range of the sliding member 432.

Claims (10)

1. An infant stroller movable from an unfolded position to a folded position after unlocking a locking device, characterized in that: including preceding leg (11), preceding leg (11) lower extreme be connected with front wheel (111), preceding leg (11) on be connected with relative its back leg (12) of rotating around first axis (A), back leg (12) on be connected with rear wheel (121), back leg (12) on rotate around second axis (B) and be connected with connecting seat (13), connecting seat (13) on still be connected with vaulting pole subassembly (14), preceding leg (11) and vaulting pole subassembly (14) between be equipped with can relative two pivoted linkage piece (15), linkage piece (15) one end rotate around third axis (C) and be connected on preceding leg (11), the other end rotates around fourth axis (D) and be connected on vaulting pole subassembly (14), and when linkage piece (15) rotate around third axis (C) relative preceding leg (11) can make preceding leg (11) and back leg (12) rotate each other and draw close.

2. The stroller of claim 1, wherein: the front legs (11) and the rear legs (12) are arranged in an X-shaped manner when the infant stroller is unfolded.

3. The infant stroller of claim 1 or 2, wherein: the support rod assembly (14) comprises a front support rod (141) connected to the connecting seat (13), an installation seat (142) is further arranged on the front support rod (141), one end of the linkage piece (15) is rotationally connected to the installation seat (142) around a fourth axis (D), and the other end of the linkage piece (15) is rotationally connected to the front leg (11) around a third axis (C).

4. A stroller according to claim 3, characterized in that: and a torsion spring (3) is arranged between the mounting seat (142) and the linkage piece (15).

5. The stroller of claim 4, wherein: the stay bar assembly (14) further comprises a rear stay bar (143) which is arranged on the connecting seat (13) and is positioned at the rear side of the front stay bar (141), and a hand push rod (144) which can slide relative to the rear stay bar (143) is connected in the rear stay bar.

6. The stroller of claim 5, wherein: the rear leg (12) include around first axis (A) rotate rear leg frame (122) of being connected on preceding leg (11), rear leg frame (122) lower extreme around second axis (B) rotate and connect on mount pad (142), rear wheel (121) connect in rear leg frame (122) lower extreme, rear leg (12) on still be equipped with transverse connection's horizontal brace (123), the middle part of horizontal brace (123) be equipped with can give way portion (1231) for hand push pole (144) when the infant shallow is folded.

7. The stroller of claim 5, wherein: the baby stroller is characterized in that the rear stay bar (143) is also connected with a sliding seat (16) capable of sliding relative to the rear stay bar, the sliding seat (16) is connected with a support bar (17), and a seat pocket (2) capable of following the expansion of the baby stroller is arranged among the support bar (17), the front leg (11) and the rear leg (12).

8. The stroller of claim 1, wherein: the front leg (11) comprises a front leg frame (112), a connecting part (113) is connected to the front leg frame (112), a front wheel frame (114) is connected to the lower end of the front leg frame (112), the front wheel (111) can rotate 360 degrees relative to the front wheel frame (114) on a horizontal plane, a rotating seat (115) is connected to the upper end of the front leg frame (112), and the front end of a linkage piece (15) is connected to the rotating seat (115) in a rotating mode around a third axis (C).

9. The stroller of claim 7, wherein: the locking device comprises a first locking device (41) arranged between the sliding seat (16) and the rear stay bar (143), a second locking component (5) arranged between the sliding seat (16) and the front stay bar (141), a second locking component (42) arranged between the hand push rod (144) and the rear stay bar (143) and a third locking component (43) arranged between the linkage piece (15) and the stay bar component (14).

10. A stroller according to claim 3, characterized in that: the mounting seat (142) is provided with a first supporting surface (1421), and the linkage piece (15) is provided with a second supporting surface (151) which can be propped against the first supporting surface (1421) when the infant stroller is unfolded.