Foldable baby stroller

Abstract

The utility model discloses a foldable stroller, which can move from an unfolding position to a folding position after a locking device is unlocked, and comprises a front leg (1) connected with a front wheel (11), the upper end of the front leg (1) is provided with a connecting seat (12), the connecting seat (12) is connected with a supporting rod (2) capable of sliding relative to the front leg (1), the upper end of the supporting rod (2) is movably connected with a handle rod (3), and the handle rod (3) is movably connected with the front leg (1). The foldable stroller further comprises rear legs (4) connected with rear wheels (41), the positions, close to the upper ends of the rear legs (4), of the rear legs (4) are rotatably connected with the lower ends of the supporting rods (2) around a first axis (A), and transmission rods (5) hinged to the connecting seats (12) and the rear legs (4) are further arranged between the connecting seats (12) and the rear legs (4). And a foldable flexible seat pocket assembly (6) for sitting is also arranged between the upper end of the rear leg (4) and the handle rod (3). The folding chair is simple in structure, convenient to fold and operate and small in size after being folded.

Description

[Technical field]

[0001] The utility model relates to a foldable baby stroller. [Background technology]

[0002] Strollers are common products for children during their growth. For the convenience of carrying or storage, strollers on the market are generally foldable. However, there are various folding structures of strollers on the market, resulting in different folding conveniences and sizes of strollers after folding. Stroller manufacturers are constantly pursuing the convenience of folding strollers and the small space occupied after folding. Therefore, the utility model comes into being. [Contents of the utility model]

[0003] The utility model aims to overcome the shortcomings of the prior art and provide a foldable child stroller which has a simple structure, is easy to fold and has a small volume after folding.

[0004] The utility model is realized by the following technical solutions:

[0005] A foldable stroller for children, which can be moved from an unfolded position to a folded position after a locking device is unlocked, comprises a front leg 1 connected to a front wheel 11, a connecting seat 12 is provided at the upper end of the front leg 1, a support rod 2 that can slide relative to the front leg 1 is connected to the connecting seat 12, a handle bar 3 is movably connected to the upper end of the support rod 2, the foldable stroller also comprises a rear leg 4 connected to a rear wheel 41, the rear leg 4 is rotatably connected to the lower end of the support rod 2 around a first axis A at and near the upper end thereof, a transmission rod 5 hinged to the connecting seat 12 and the rear leg 4 is also provided, and a foldable flexible seat bag assembly 6 for riding is also provided between the upper end of the rear leg 4 and the handle bar 3.

[0006] The seat bag assembly 6 includes a flexible seat bag body 61 for children to sit on, the upper end of the rear leg 4 is provided with a connecting portion 42 that can be connected to the front end of the seat bag body 61, a first flexible pull rope 62 is provided between the rear end of the seat bag body 61 and the rear leg 4, and a second flexible pull rope 63 is provided between the upper end of the seat bag body 61 and the handlebar 3.

[0007] The handle bar 3 comprises a lower rod body 31 rotatably connected to the support rod 2 , a transverse cross rod body 32 is provided at the upper end of the lower rod body 31 , a handle 33 extending forward is also provided at the upper end of the lower rod body 31 , and the second flexible pull rope 63 is connected to the handle 33 .

[0008] The cross bar body 32 is rotatably connected to a forwardly extending ceiling support 71 , and the ceiling support 71 is connected to a ceiling 72 .

[0009] The front leg 1 is provided with a guide groove 13 , and the rear leg 4 or the support rod 2 is provided with a guide column 43 which can cooperate with the guide groove 13 when the support rod 2 slides relative to the front leg 1 .

[0010] The connecting seat 12 is provided with a through hole 14 , and the support rod 2 is passed through the through hole 14 and can slide in the through hole 14 .

[0011] The locking device includes a first locking mechanism 81 arranged between the support rod 2 and the lower end of the handle rod 3, an unlocking member 83 is provided on the handle rod 3 and can drive the first locking mechanism 81 to unlock, a second locking mechanism 82 is provided between the support rod 2 and the connecting seat 12, and a linkage member 84 is provided between the handle rod 3 and the second locking mechanism 82 and can drive the second locking mechanism 82 to unlock when the handle rod 3 is rotated and folded relative to the support rod 2.

[0012] The first locking mechanism 81 includes a first shell 811 arranged at the lower end of the handle rod 3 and a second shell 812 arranged at the upper end of the support rod 2. The first shell 811 and the second shell 812 are both provided with a snap-in groove 813. A spline 814 is provided in the space enclosed by the first shell 811 and the second shell 812, which can move laterally therein and can be simultaneously engaged with the snap-in groove 813 on the first shell 811 and the second shell 812. A movable block 815 is provided between the spline 814 and the first shell 811, which can rotate relative to the first shell 811 and can push the spline 814 to disengage from the snap-in groove 813 on the first shell 811 when rotating. The movable block 815 is connected to the unlocking member 83. A first return spring 816 is provided between the spline 814 and the second shell 812, which can push the spline 814 to move and return to its original position.

[0013] The movable block 815 is provided with a plurality of inclined grooves 817 along the circumferential direction, the first shell 811 is provided with an inclined protrusion 818 which cooperates with the inclined groove 817 and can push the movable block 815 to move laterally when the movable block 815 rotates, the unlocking member 83 includes a first cable 831 connected to the eccentric position of the movable block 815 and can pull the movable block 815 to rotate, and the unlocking member 83 also includes an operating switch 832 connected to the other end of the first cable 831 and can drive the first cable 831 to move.

[0014] The second locking mechanism 82 includes a locking hole 821 provided on the connecting seat 12, a locking seat 822 is provided in the support rod 2, a locking plate 823 is rotatably connected to the locking seat 822, and a locking block 824 is provided on the locking plate 823 which can engage with or disengage from the locking hole 821. The linkage 84 is a second cable provided between the first shell 811 and the locking plate 823, and a second reset spring 825 is also provided between the locking plate 823 and the locking seat 822 which can push the locking plate 823 to rotate and reset.

[0015] Compared with the prior art, the utility model has the following advantages:

[0016] 1. When the child stroller of the utility model is folded, the handle bar is first folded relative to the support bar, and then the support bar is slid downward relative to the front leg, so that the lower end of the support bar approaches the front wheel. At the same time, the support bar drives the upper end of the rear leg to approach the front wheel, and the transmission rod rotates relative to the rear leg and the connecting seat. The flexible seat pocket assembly is also folded up, and finally the upper end of the support rod approaches the rear wheel, so that the front leg, the rear leg, the support rod, the handle bar and the transmission rod are stacked together. After folding, the volume is small and it is easy to store. Moreover, when folding, it is only necessary to fold the handle bar first and then slide the support bar downward. The folding operation is also very convenient and quick.

[0017] 2. The front end of the seat pocket body of the utility model is connected to the connecting part of the upper end of the rear leg, the rear end of the seat pocket body is connected to the rear leg through a first flexible drawstring, and the upper end of the seat pocket body is connected to the handlebar through a second flexible drawstring. Therefore, when the child stroller is unfolded, the seat pocket assembly is in an unfolded and taut state, and can be folded up when the child stroller is folded. The above-mentioned flexible seat pocket assembly is low in cost.

[0018] 3. After the unlocking member of the utility model unlocks the first locking mechanism, the handle bar rotates and folds relative to the support rod, and during the rotation of the handle bar, the second locking mechanism is unlocked through the linkage member, so that the support rod can be slid downward to fold the child stroller. Therefore, multiple unlocking can be easily achieved by operating the unlocking member, and the operation is very convenient and quick.

Brief Description of the Drawings

[0019] Figure 1 It is a three-dimensional diagram of the utility model;

[0020] Figure 2 It is a side view of the utility model;

[0021] Figure 3 This is one of the three-dimensional diagrams of the utility model after removing the seat pocket assembly;

[0022] Figure 4 This is the second stereoscopic view of the utility model after removing the seat pocket assembly;

[0023] Figure 5 It is a side view of the utility model without the seat pocket assembly;

[0024] Figure 6 This is a schematic diagram of the utility model during folding after the seat pocket assembly is removed;

[0025] Figure 7 It is a three-dimensional diagram of the folded state of the utility model after removing the seat pocket assembly;

[0026] Figure 8It is one of the exploded views of the components of the utility model;

[0027] Fig. 9 This is the second exploded view of the components of the utility model;

[0028] Fig.10 It is a cross-sectional view of the utility model after removing the seat pocket assembly;

[0029] Fig.11 yes Fig.10 Magnified view at B. [Specific implementation method]

[0030] The utility model is further described below in conjunction with the accompanying drawings:

[0031] like Figures 1 to 7 As shown, a foldable stroller for children can be moved from an unfolded position to a folded position after a locking device is unlocked, comprising a front leg 1 connected to a front wheel 11, a connecting seat 12 being provided at the upper end of the front leg 1, a support rod 2 being connected to the connecting seat 12 and being able to slide relative to the front leg 1, a handle bar 3 being movably connected to the upper end of the support rod 2, the foldable stroller also comprising a rear leg 4 connected to a rear wheel 41, the rear leg 4 being rotatably connected to the lower end of the support rod 2 around a first axis A at and near the upper end thereof, a transmission rod 5 being hingedly connected to the connecting seat 12 and the rear leg 4, and a foldable flexible seat bag assembly 6 for riding is provided between the upper end of the rear leg 4 and the handle bar 3. When the stroller is folded, the handle bar 3 is first folded relative to the support bar 2, and then the support bar 2 is slid downward relative to the front leg 1, and the lower end of the support bar 2 approaches the front wheel 11. At the same time, the support bar 2 drives the upper end of the rear leg 4 to approach the front wheel 11, and the transmission rod 5 rotates relative to the rear leg 4 and the connecting seat 12. The flexible seat pocket assembly 6 is also folded up, and finally the upper end of the support bar 2 approaches the rear wheel 41, so that the front leg 1, the rear leg 4, the support bar 2, the handle bar 3 and the transmission rod 5 are stacked together. After folding, the volume is small and it is easy to store. Moreover, when folding, you only need to fold the handle bar 3 first and then slide the support bar 2 downward. The folding operation is also very convenient and quick.

[0032] like Figure 1 and Figure 2 As shown, the seat bag assembly 6 includes a flexible seat bag body 61 for children to sit on, the upper end of the rear legs 4 is provided with a connecting portion 42 that can be connected to the front end of the seat bag body 61, a first flexible drawstring 62 is provided between the rear end of the seat bag body 61 and the rear legs 4, and a second flexible drawstring 63 is provided between the upper end of the seat bag body 61 and the handle bar 3. When the child stroller is unfolded, the seat bag assembly 6 is in an unfolded and taut state, and can be folded up when the child stroller is folded. The above-mentioned flexible seat bag assembly 6 is low in cost. The seat bag body 61 in this embodiment is made of textile cloth, and of course other flexible materials can also be used.

[0033] like Figures 1 to 3 As shown, the handle bar 3 comprises a lower rod body 31 rotatably connected to the support rod 2, a transverse cross rod body 32 is provided at the upper end of the lower rod body 31, a handle 33 extending forward is also provided at the upper end of the lower rod body 31, and the second flexible pull rope 63 is connected to the handle 33. When the child stroller is folded, the handle bar 3 can be folded close to the support rod 2 by rotating the lower rod body 31 relative to the support rod 2.

[0034] like Figures 1 to 3 As shown, the cross bar body 32 is rotatably connected to a forwardly extending ceiling support 71, and the ceiling support 71 is connected to a ceiling 72. The ceiling 72 is used to block sunlight so that children can sit comfortably. When the child stroller needs to be folded, the ceiling support 71 can be rotated to fold the ceiling 72 close to the handle bar 3.

[0035] like Figure 1 , Figure 3 and Figure 8 As shown, the front leg 1 is provided with a guide groove 13, the rear leg 4 or the support rod 2 is provided with a guide column 43 that can cooperate with the guide groove 13 when the support rod 2 slides relative to the front leg 1, the rear leg 4 is provided with a protrusion 44, the guide column 43 is arranged on the protrusion 44, and the lower end of the support rod 2 is rotatably connected to the protrusion 44. Therefore, when the support rod 2 slides relative to the front leg 1, the guide column 43 cooperates with the guide groove 13 to make the support rod 2 slide smoothly, so that the child stroller can be folded smoothly. In addition, the lower end of the support rod 2 is rotatably connected to the protrusion 44, and the setting of the rotation position can also make the child stroller flexible to fold.

[0036] like Figure 4 and Figure 8 As shown, the connecting seat 12 is provided with a through hole 14, and the support rod 2 is penetrated in the through hole 14 and can slide in the through hole 14. The hole wall of the through hole 14 also plays a guiding role, so that the support rod 2 slides smoothly and steadily.

[0037] like Figures 8 to 11As shown, the locking device includes a first locking mechanism 81 disposed between the support rod 2 and the lower end of the handle rod 3, an unlocking member 83 capable of driving the first locking mechanism 81 to unlock is disposed on the handle rod 3, a second locking mechanism 82 is disposed between the support rod 2 and the connecting seat 12, and a linkage member 84 capable of driving the second locking mechanism 82 to unlock when the handle rod 3 rotates and folds relative to the support rod 2 is disposed between the handle rod 3 and the second locking mechanism 82. After the unlocking member 83 unlocks the first locking mechanism 81, the handle rod 3 rotates and folds relative to the support rod 2, and during the rotation of the handle rod 3, the second locking mechanism 82 is unlocked through the linkage member 84, so that the support rod 2 can be slid downward to fold the child stroller. Therefore, multiple unlockings can be easily achieved by operating the unlocking member 83, and the operation is very convenient and quick. The user can unlock and fold the child stroller with one hand and one button.

[0038] like Figure 8 and Fig. 9As shown, the first locking mechanism 81 includes a first shell 811 arranged at the lower end of the handle rod 3 and a second shell 812 arranged at the upper end of the support rod 2, and the first shell 811 and the second shell 812 are both provided with a snap-in groove 813. A spline 814 that can move laterally therein and can be simultaneously engaged with the snap-in groove 813 on the first shell 811 and the second shell 812 is provided in the space surrounded by the first shell 811 and the second shell 812, and a movable block 815 that can rotate relative to the first shell 811 and can push the spline 814 to disengage from the snap-in groove 813 on the first shell 811 when rotating is provided between the spline 814 and the first shell 811. The movable block 815 is connected to the unlocking member 83, and a first reset spring 816 is provided between the spline 814 and the second shell 812, which can push the spline 814 to move and reset. The movable block 815 is provided with a plurality of inclined grooves 817 along the circumferential direction, and the first shell 811 is provided with an inclined protrusion 818 that cooperates with the inclined groove 817 and can push the movable block 815 to move laterally when the movable block 815 rotates. The unlocking member 83 includes a first cable 831 connected to the eccentric position of the movable block 815 and can pull the movable block 815 to rotate, and the unlocking member 83 also includes an operating switch 832 connected to the other end of the first cable 831 and can drive the first cable 831 to move. When the stroller needs to be folded, pressing the operating switch 832 can pull the movable block 815 to rotate through the first cable 831. At this time, the inclined protrusion 818 on the first shell 811 pushes the wall of the inclined groove 817 on the movable block 815, so that the movable block 815 moves laterally, and the movable block 815 pushes the spline 814 to disengage from the clamping groove 813 on the first shell 811. At this time, the first locking mechanism 81 is unlocked, and the handle bar 3 can be rotated and folded relative to the support rod 2. Of course, in order to ensure safety, a second lock button can also be set on the handle bar 3. Only after pressing the second lock button can the operating switch 832 be pressed to pull the cable 831, thereby avoiding misunderstanding of the lock and ensuring safety. The second lock button can adopt a traditional two-lock structure, which will not be repeated here.

[0039] like Figures 8 to 11As shown, the second locking mechanism 82 comprises a locking hole 821 provided on the connecting seat 12, a locking seat 822 is provided in the supporting rod 2, a locking piece 823 is rotatably connected to the locking seat 822, a locking block 824 which can be engaged with or disengaged from the locking hole 821 is provided on the locking piece 823, the linkage member 84 is a second cable provided between the first housing 811 and the locking piece 823, and a second return spring 825 which can push the locking piece 823 to rotate and return is further provided between the locking piece 823 and the locking seat 822. When the handle bar 3 is rotated and folded relative to the supporting rod 2, the first housing 811 pulls the locking piece 823 to rotate through the second cable, and the locking block 824 on the locking piece 823 withdraws from the locking hole 821 on the connecting seat 12 during the rotation process, and the second locking mechanism 82 is unlocked at this time, and the supporting rod 2 can be pushed downward at this time, so that the supporting rod 2 slides downward relative to the front leg 1. The unlocking action of the second locking mechanism 82 is completed by the rotation action of the handle bar 3, so that the unlocking operation of the second locking mechanism 82 is very convenient and quick. When folding the stroller, the user only needs to press the second lock button and the operation switch 832 in sequence and rotate the handle bar 3 to unlock the whole stroller, and then push the support rod 2 to slide downward. The user can operate it with one hand, which is very convenient. Moreover, the stroller is small in size after folding, takes up little space, and can be placed in the trunk of a car for easy carrying.

[0040] The embodiment is described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiment, and various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the present purpose.

Claims

1. A foldable stroller that can be moved from an unfolded position to a folded position after a locking device is unlocked, characterized in that: The foldable stroller comprises a front leg (1) connected to a front wheel (11), a connecting seat (12) being provided at the upper end of the front leg (1), a support rod (2) being connected to the connecting seat (12) and being capable of sliding relative to the front leg (1), a handle bar (3) being movably connected to the upper end of the support rod (2), the foldable stroller further comprising a rear leg (4) connected to a rear wheel (41), a lower end of the support rod (2) being rotatably connected to the rear leg (4) and close to the upper end thereof around a first axis (A), a transmission rod (5) being hingedly connected to the connecting seat (12) and the rear leg (4), and a foldable flexible seat bag assembly (6) for riding is provided between the upper end of the rear leg (4) and the handle bar (3).

2. The foldable stroller according to claim 1, characterized in that: The seat bag assembly (6) comprises a flexible seat bag body (61) for children to sit on, the upper end of the rear legs (4) is provided with a connecting portion (42) that can be connected to the front end of the seat bag body (61), a first flexible pull rope (62) is provided between the rear end of the seat bag body (61) and the rear legs (4), and a second flexible pull rope (63) is provided between the upper end of the seat bag body (61) and the handlebar (3).

3. The foldable stroller according to claim 2, characterized in that: The handle bar (3) comprises a lower bar body (31) rotatably connected to the support bar (2), a transverse cross bar body (32) is provided at the upper end of the lower bar body (31), a handle (33) extending forward is also provided at the upper end of the lower bar body (31), and the second flexible pull rope (63) is connected to the handle (33).

4. The foldable stroller according to claim 3, characterized in that: The crossbar body (32) is rotatably connected to a ceiling support (71) extending forward, and the ceiling support (71) is connected to a ceiling (72).

5. The foldable stroller according to claim 1, characterized in that: The front leg (1) is provided with a guide groove (13), and the rear leg (4) or the support rod (2) is provided with a guide column (43) which can cooperate with the guide groove (13) when the support rod (2) slides relative to the front leg (1).

6. The foldable stroller according to claim 1, characterized in that: The connecting seat (12) is provided with a through hole (14), and the support rod (2) is inserted into the through hole (14) and can slide in the through hole (14).

7. The foldable stroller according to any one of claims 3 to 6, characterized in that: The locking device comprises a first locking mechanism (81) arranged between the support rod (2) and the lower end of the handle rod (3); an unlocking member (83) capable of driving the first locking mechanism (81) to unlock is arranged on the handle rod (3); a second locking mechanism (82) is arranged between the support rod (2) and the connecting seat (12); and a linkage member (84) capable of driving the second locking mechanism (82) to unlock when the handle rod (3) is rotated and folded relative to the support rod (2).

8. The foldable stroller according to claim 7, characterized in that: The first locking mechanism (81) comprises a first shell (811) provided at the lower end of the handle bar (3) and a second shell (812) provided at the upper end of the support bar (2); the first shell (811) and the second shell (812) are both provided with a snap-fitting groove (813); a locking member (813) is provided in the space enclosed by the first shell (811) and the second shell (812) and is capable of moving laterally therein and being simultaneously snap-fitted with the snap-fitting grooves (813) on the first shell (811) and the second shell (812). A spline (814) is provided between the spline (814) and the first housing (811), and a movable block (815) is provided between the spline (814) and the first housing (811), which can rotate relative to the first housing (811) and can push the spline (814) to disengage from the engaging groove (813) on the first housing (811) when rotating; the movable block (815) is connected to the unlocking member (83); and a first return spring (816) is provided between the spline (814) and the second housing (812), which can push the spline (814) to move and return.

9. The foldable stroller according to claim 8, characterized in that: The movable block (815) is provided with a plurality of inclined grooves (817) along the circumferential direction, the first housing (811) is provided with an inclined protrusion (818) which cooperates with the inclined grooves (817) and can push the movable block (815) to move laterally when the movable block (815) rotates, the unlocking member (83) includes a first cable (831) connected to an eccentric position of the movable block (815) and can pull the movable block (815) to rotate, and the unlocking member (83) also includes an operating switch (832) connected to the other end of the first cable (831) and can drive the first cable (831) to move.

10. The foldable baby stroller according to claim 8 or 9, characterized in that: The second locking mechanism (82) includes a locking hole (821) provided on the connecting seat (12); a locking seat (822) is provided in the support rod (2); a locking plate (823) is rotatably connected to the locking seat (822); a locking block (824) is provided on the locking plate (823) that can engage with or disengage from the locking hole (821); the linkage member (84) is a second cable provided between the first housing (811) and the locking plate (823); and a second reset spring (825) is also provided between the locking plate (823) and the locking seat (822) that can push the locking plate (823) to rotate and reset.

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