A child stroller

Abstract

The present invention discloses a child stroller, comprising a bottom support frame and a seat support frame, the bottom support frame comprising a front leg and a rear leg, both of which are provided with a wheel assembly, a support rod is rotatably connected to the bottom support frame, a first transmission assembly capable of driving the front leg to rotate and approach the rear leg is provided between the support rod and the front leg, a second transmission assembly capable of driving the seat support frame to rotate and approach the front leg is provided between the seat support frame and the bottom support frame, the second transmission assembly comprises a rack provided on the front leg and capable of sliding relative to the front leg, a gear part meshing with the rack is provided on the rear leg and capable of causing the rack to slide relative to the front leg when the front leg is rotated and folded toward the rear leg, and a traction part capable of driving the seat support frame to approach the front leg when the rack slides is further provided between the rack and the seat support frame. The purpose of the present invention is to overcome the deficiencies of the prior art and provide a child stroller that is easy to fold and unfold, has a simple structure and is small in size after folding.

Description

[Technical field]

[0001] The invention relates to a baby stroller. [Background technology]

[0002] At present, baby strollers have become an indispensable item for children in their growth process. Baby strollers on the market can generally be folded or unfolded, but the existing baby strollers have a complex transmission structure, many connecting rods, and are still large in size after folding. Therefore, people are eager for a baby stroller that is easy to fold and unfold, has a simple structure, and is small in size after folding.

[0003] The present invention is just produced based on the above-mentioned shortcomings. [Summary of the invention]

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a child stroller which is easy to fold and unfold, has a simple structure and a small size after folding.

[0005] The present invention is achieved through the following technical solutions:

[0006] A child stroller, characterized in that it includes a bottom support frame 1 and a seat support frame 2 rotatably connected to the bottom support frame 1 around a second axis B, the bottom support frame 1 includes a front leg 11 and a rear leg 12 rotatably connected to the front leg 11 around a first axis A, the front leg 11 and the rear leg 12 are both provided with a wheel assembly 13, the bottom support frame 1 is rotatably connected with a support rod 14, a first transmission assembly 3 is provided between the support rod 14 and the front leg 11, and when the support rod 14 is rotated and folded toward the rear leg 12, the front leg 11 is driven to rotate and move closer to the rear leg 12, and the seat support frame 2 is connected to the rear leg 12. A second transmission assembly 4 is provided between the bottom support frame 1, which can drive the seat support frame 2 to rotate and move closer to the front leg 11 when the front leg 11 is rotated and folded toward the rear leg 12. The second transmission assembly 4 includes a rack 41 provided on the front leg 11 and capable of sliding relative to the front leg 11. The rear leg 12 is provided with a gear part 42 which is meshed with the rack 41 and can make the rack 41 slide relative to the front leg 11 when the front leg 11 is rotated and folded toward the rear leg 12. A traction part 43 is also provided between the rack 41 and the seat support frame 2, which can drive the seat support frame 2 to move closer to the front leg 11 when the rack 41 slides.

[0007] The child stroller as described above is characterized in that: the traction component 43 includes a traction rod, and the lower end of the traction rod is rotatably connected to the front end of the rack 41 around the third axis C, and the upper end of the traction rod is rotatably connected to the front end of the seat support frame 2 around the fourth axis D.

[0008] The child stroller as described above is characterized in that: the first transmission assembly 3 includes a transverse axis 31 connected to the rear leg 12 and extending laterally to pass through the front leg 11 and the support rod 14, the transverse axis 31 is connected to a movable gear 32, the support rod 14 is provided with a positive gear portion 33 that meshes with the movable gear 32 and can drive the movable gear 32 to rotate when the support rod 14 rotates relative to the rear leg 12, and the front leg 11 is provided with a reverse gear portion 34 that meshes with the movable gear 32 and can drive the front leg 11 to move closer to the rear leg 12 under the drive of the movable gear 32.

[0009] The baby stroller as described above is characterized in that: the support rod 14 is provided with a first arc-shaped groove 141 in which the movable gear 32 can move, and the positive gear tooth portion 33 includes a plurality of positive gear teeth 331 arranged along the inner wall of the first arc-shaped groove 141 and capable of meshing with the movable gear 32;

[0010] The front leg 11 is provided with a second arc groove 111 in which the horizontal axis 31 can move, and the front leg 11 is also provided with a third arc groove 112 in which the movable gear 32 can move. The reverse gear tooth portion 34 includes a plurality of reverse gear teeth 341 arranged along the circumference of the third arc groove 112 and capable of meshing with the movable gear 32.

[0011] The baby stroller as described above is characterized in that: the movable gear 32 includes a first gear 321 that can mesh with the positive gear portion 33, and the rear end of the first gear 321 is connected to a second gear 322 that is coaxially arranged with the first gear 321 and can mesh with the reverse gear portion 34.

[0012] The child stroller as described above is characterized in that the axis center of the transverse axis 31 deviates from the first axis A and is arranged parallel to the first axis A.

[0013] The child stroller as described above is characterized in that the rear end of the seat support frame 2 is rotatably connected to the front leg 11 around the second axis B.

[0014] The baby stroller as described above is characterized in that: the support rod 14 is connected to a handlebar 15 which can slide or rotate relative to the support rod.

[0015] The child stroller as described above is characterized in that: a locking device 5 capable of locking the support rod 14 and the front leg 11 is provided between the support rod 14, the locking device 5 includes a locking position 51 provided on the support rod 14, a locking member 52 capable of engaging with or disengaging from the locking position 51 is slidably connected inside the front leg 11, an elastic member 53 capable of keeping the locking member 52 in a locked state is also provided between the locking member 52 and the front leg 11, a handlebar 15 capable of driving the locking member 52 to disengage from the locking position 51 is slidably connected to the support rod 14, and a latch 54 is also connected to the front leg 11, which penetrates the locking member 52 transversely and limits the locking member 52 from disengaging from the front leg 11.

[0016] The child stroller as described above is characterized in that a foldable child seat 6 is also connected to the seat support frame 2 .

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] 1. When the stroller of the present invention is folded, the support rod is first pushed to rotate downward relative to the rear legs. When the support rod rotates relative to the rear legs and approaches them, the first transmission assembly drives the front legs to rotate and approach the rear legs. When the front legs rotate toward the rear legs, the gear parts on the rear legs can make the racks on the front legs slide relative to the front legs to pull the traction parts to move. When the traction parts are pulled, they can drive the seat support frame to rotate relative to the bottom support frame and approach the front legs. When the front legs and the support rod are close to the rear legs and the seat support frame is close to the front legs, the entire stroller is folded. Only the push rod needs to be operated to drive the front legs to approach the rear legs and the seat support frame to approach the front legs, which is convenient for users to operate and use. In addition, the transmission structure design of the stroller of the present invention is simple and ingenious, and the number of transmission connecting rods is reduced, making the entire stroller structure more compact. The space occupied by the folded stroller is smaller, which is more convenient for users to store.

[0019] 2. When the support rod rotates clockwise relative to the hind legs, the spur gear part on the support rod drives the movable gear to rotate. At the same time, the movable gear drives the front legs to move closer to the hind legs through transmission with the reverse gear tooth part. The front legs rotate counterclockwise relative to the hind legs and move closer to each other under the cooperation of the movable gear and the reverse gear tooth part. Only by operating the support rod can the front legs be driven to rotate and move closer to the hind legs, which is easy to operate and use.

Brief Description of the Drawings

[0020] Figure 1 is a three-dimensional diagram of a child stroller of the present invention;

[0021] Figure 2 is a side view of the child stroller of the present invention;

[0022] Figure 3 is a cross-sectional view of a second transmission assembly in the child stroller of the present invention;

[0023] Figure 4 It is one of the three-dimensional diagrams of the first transmission assembly in the child stroller of the present invention;

[0024] Figure 5 This is the second stereoscopic view of the first transmission assembly in the child stroller of the present invention;

[0025] Figure 6 is an exploded view of a first transmission assembly in the child stroller of the present invention;

[0026] Figure 7 is a cross-sectional view of a locking device in a child stroller of the present invention;

[0027] Figure 8 is a state diagram of the child stroller of the present invention when it is folded;

[0028] Fig. 9 is a state diagram of the child stroller of the present invention when folding is completed;

[0029] Fig.10 The present invention is a diagram of a child stroller in use when a child seat is installed. [Specific implementation method]

[0030] The present invention will be further described below in conjunction with the accompanying drawings:

[0031] like Figures 1 to 10 As shown, the present invention provides a child stroller, comprising a bottom support frame 1 and a seat support frame 2 rotatably connected to the bottom support frame 1 around a second axis B, the bottom support frame 1 comprises a front leg 11 and a rear leg 12 rotatably connected to the front leg 11 around a first axis A, the front leg 11 and the rear leg 12 are both provided with a wheel assembly 13, the bottom support frame 1 is rotatably connected with a support rod 14, a first transmission assembly 3 is provided between the support rod 14 and the front leg 11, and when the support rod 14 is rotated and folded toward the rear leg 12, the front leg 11 is driven to rotate and move closer to the rear leg 12, and the seat support frame 2 A second transmission assembly 4 is provided between the bottom support frame 1 and the seat support frame 2, which can drive the seat support frame 2 to rotate and move closer to the front leg 11 when the front leg 11 is rotated and folded toward the rear leg 12. The second transmission assembly 4 includes a rack 41 provided on the front leg 11 and capable of sliding relative to the front leg 11. The rear leg 12 is provided with a gear portion 42 which is meshed with the rack 41 and can make the rack 41 slide relative to the front leg 11 when the front leg 11 is rotated and folded toward the rear leg 12. A traction component 43 is also provided between the rack 41 and the seat support frame 2, which can drive the seat support frame 2 to move closer to the front leg 11 when the rack 41 slides.

[0032] When the stroller of the present invention is folded, the support rod 14 is first pushed to rotate downward relative to the rear leg 12. When the support rod 14 rotates relative to the rear leg 12 and approaches the rear leg 12, the first transmission assembly 3 drives the front leg 11 to rotate and approach the rear leg 12. When the front leg 11 rotates toward the rear leg 12, the gear portion 42 on the rear leg 12 can make the rack 41 on the front leg 11 slide relative to the front leg 11 and pull the traction component 43 to move. When the traction component 43 is pulled, it drives the seat support frame 2 to rotate relative to the bottom support frame 1 and approach the front leg 11. When the front legs 11 and the support rods 14 are close to the rear legs 12 and the seat support frame 2 is close to the front legs 11, the entire child stroller is folded. Only the support rods 14 need to be operated to drive the front legs 11 to move closer to the rear legs 12 and the seat support frame 2 to move closer to the front legs 11, which is convenient for users to operate and use. In addition, the transmission structure design of the child stroller of the present invention is simple and ingenious, and the number of transmission connecting rods is reduced, making the entire child stroller structure more compact, and the space occupied by the folded child stroller is smaller, which is more convenient for users to store. When in use, the present invention can place a cushion on the seat support frame 2, and the child can sit on the cushion.

[0033] like Figure 3 As shown, the traction component 43 includes a traction rod, and the lower end of the traction rod is rotatably connected to the front end of the rack 41 around the third axis C, and the upper end of the traction rod is rotatably connected to the front end of the seat support frame 2 around the fourth axis D.

[0034] like Figure 3 As shown, the rear end of the seat support frame 2 is connected to the front leg 11 by rotating around the second axis B. The lower end of the traction member 43 is pulled by the rack 41 and moves while rotating relative to the rack 41 around the third axis C, and the upper end of the traction member 43 rotates relative to the seat support frame 2 around the fourth axis D and pulls the front end of the seat support frame 2 to rotate, and the rear end of the seat support frame 2 rotates relative to the front leg 11 around the second axis B, and at this time, the front end of the seat support frame 2 is folded close to the front leg 11.

[0035] like Figures 4 to 6As shown, the first transmission assembly 3 includes a transverse axis 31 connected to the rear leg 12 and extending laterally to pass through the front leg 11 and the strut 14, a movable gear 32 is connected to the transverse axis 31, the strut 14 is provided with a positive gear portion 33 which meshes with the movable gear 32 and can drive the movable gear 32 to rotate when the strut 14 rotates relative to the rear leg 12, and the front leg 11 is provided with a reverse gear portion 34 which meshes with the movable gear 32 and can drive the front leg 11 to move closer to the rear leg 12 under the drive of the movable gear 32. The support rod 14 rotates clockwise to approach the hind leg 12, and the front leg 11 rotates counterclockwise to approach the hind leg 12, so the rotation directions of the two are different. When the support rod 14 rotates clockwise relative to the hind leg 12, the positive gear tooth portion 33 on the support rod 14 drives the movable gear 32 to rotate, and the movable gear 32 drives the front leg 11 to move closer to the hind leg 12 through transmission with the reverse gear tooth portion 34. Only by operating the support rod 14, the front leg 11 can be driven to rotate and move closer to the hind leg 12, which is easy to operate and use.

[0036] When the support rod 14 rotates clockwise relative to the rear leg 12, the spur gear portion 33 on the support rod 14 drives the movable gear 32 to rotate. At the same time, the movable gear 32 drives the front leg 11 to move closer to the rear leg 12 through transmission with the reverse gear portion 34. The front leg 11 rotates counterclockwise relative to the rear leg 12 in cooperation with the reverse gear portion 34. Only by operating the support rod 14, the front leg 11 can be driven to rotate and move closer to the rear leg 12, which is easy to operate and use.

[0037] like Figure 4 As shown, the support rod 14 is provided with a first arc-shaped groove 141 in which the movable gear 32 can move, and the positive gear tooth portion 33 includes a plurality of positive gear teeth 331 arranged along the inner wall of the first arc-shaped groove 141 and capable of meshing with the movable gear 32. When the support rod 14 rotates clockwise relative to the rear leg 12, the plurality of positive gear teeth 331 on the support rod 14 mesh with the movable gear 32 and drive the movable gear 32 to rotate clockwise.

[0038] like Figure 5 As shown, the front leg 11 is provided with a second arc groove 111 in which the horizontal axis 31 can move, and the front leg 11 is also provided with a third arc groove 112 in which the movable gear 32 can move, and the reverse gear tooth portion 34 includes a plurality of reverse gear teeth 341 arranged along the circumference of the third arc groove 112 and capable of meshing with the movable gear 32. The third arc groove 112 is used to give way to the movable gear 32 so that the movable gear 32 can move in the third arc groove 112, and the second arc groove 111 is used for the horizontal axis 31 to move, and the second arc groove 111 has two travel positions, one for folding to the final state, and the other for unfolding. When the movable gear 32 drives the reverse gear tooth portion 34 to rotate, the front leg 11 rotates counterclockwise and approaches the rear leg 12.

[0039] like Figure 6 As shown, the movable gear 32 includes a first gear 321 that can mesh with the positive gear portion 33, and the rear end of the first gear 321 is connected to a second gear 322 that is coaxially arranged with the first gear 321 and can mesh with the reverse gear portion 34. Since the movable gear 32 is driven in the positive direction by the positive gear portion 33 on the support rod 14 and drives the reverse gear portion 34 to rotate in the reverse direction, the support rod 14 and the front leg 11 rotate closer to the rear leg 12.

[0040] like Figure 6 As shown, the axis center of the horizontal axis 31 deviates from the first axis A and is arranged parallel to the first axis A.

[0041] like Figure 2 As shown, the support rod 14 is connected to a handlebar 15 that can slide or rotate relative to the support rod 14. The handlebar 15 can slide relative to the support rod 14 and shorten when folded. Of course, there is another way, the handlebar 15 rotates relative to the support rod 14 and approaches the support rod when folded, which can reduce the space occupied by the child stroller when folded.

[0042] like Figure 7 As shown, a locking device 5 capable of locking the two is provided between the support rod 14 and the front leg 11, and the locking device 5 includes a locking position 51 provided on the support rod 14, and a locking member 52 capable of engaging with or disengaging from the locking position 51 is slidably connected in the front leg 11, and an elastic member 53 capable of keeping the locking member 52 in a locked state is also provided between the locking member 52 and the front leg 11, a handlebar rod 15 capable of driving the locking member 52 to disengage from the locking position 51 is slidably connected to the support rod 14, and a pin 54 is also connected to the front leg 11, which penetrates the locking member 52 transversely and limits the locking member 52 from disengaging from the front leg 11.

[0043] When the stroller needs to be folded, the locking device 5 needs to be unlocked to allow the front leg 11 and the support rod 14 to rotate relative to each other. When the locking device 5 is unlocked, the handlebar 15 is pushed to slide inside the support rod 14. When the support rod 14 slides, the lower end of the support rod 14 presses the locking piece 52. After being pressed, the locking piece is disengaged from the locking position 51 on the support rod 14. At this time, the locking between the support rod 14 and the front leg 11 is released, and the front leg 11 and the support rod 14 can both rotate relative to the rear leg 12.

[0044] like Figure 3 As shown, the front leg 11 is provided with a slide groove 113 for the rack 41 to slide. The slide groove 113 is used for the rack 41 to slide.

[0045] like Fig.10 As shown, a foldable child seat 6 is also connected to the seat support frame 2. When the child stroller is folded, the child seat 6 can also be folded, so that the space occupied by the child stroller is smaller when folded.

Claims

1. A baby stroller, characterized in that: The invention comprises a bottom support frame (1) and a seat support frame (2) rotatably connected to the bottom support frame (1) around a second axis (B), the bottom support frame (1) comprising a front leg (11) and a rear leg (12) rotatably connected to the front leg (11) around a first axis (A), the front leg (11) and the rear leg (12) are both provided with a wheel assembly (13), the bottom support frame (1) is rotatably connected to a support rod (14), a first transmission assembly (3) is provided between the support rod (14) and the front leg (11) and can drive the front leg (11) to rotate and move closer to the rear leg (12) when the support rod (14) rotates and folds toward the rear leg (12), and a transmission assembly (3) is provided between the seat support frame (2) and the bottom support frame (1) and can drive the seat support frame (2) to rotate and move closer to the front leg (11) when the front leg (11) rotates and folds toward the rear leg (12). The second transmission assembly (4) comprises a rack (41) which is arranged on the front leg (11) and can slide relative to the front leg (11); the rear leg (12) is provided with a gear part (42) which is meshed with the rack (41) and can make the rack (41) slide relative to the front leg (11) when the front leg (11) is rotated and folded toward the rear leg (12); a traction component (43) is also arranged between the rack (41) and the seat support frame (2) and can drive the seat support frame (2) to move closer to the front leg (11) when the rack (41) slides; the traction component (43) comprises a traction rod, and the lower end of the traction rod is rotatably connected to the front end of the rack (41) around a third axis (C), and the upper end of the traction rod is rotatably connected to the front end of the seat support frame (2) around a fourth axis (D).

2. The baby stroller according to claim 1, characterized in that: The first transmission assembly (3) comprises a transverse shaft (31) connected to the rear leg (12) and extending transversely to pass through the front leg (11) and the support rod (14); the transverse shaft (31) is connected to a movable gear (32); the support rod (14) is provided with a positive gear tooth portion (33) meshing with the movable gear (32) and capable of driving the movable gear (32) to rotate when the support rod (14) rotates relative to the rear leg (12); the front leg (11) is provided with a reverse gear tooth portion (34) meshing with the movable gear (32) and capable of driving the front leg (11) to move closer to the rear leg (12) under the drive of the movable gear (32).

3. The stroller according to claim 2, characterized in that: The support rod (14) is provided with a first arc-shaped groove (141) in which the movable gear (32) can move, and the positive gear tooth portion (33) includes a plurality of positive gear teeth (331) arranged along the inner wall of the first arc-shaped groove (141) and capable of meshing with the movable gear (32); The front leg (11) is provided with a second arc groove (111) in which the transverse shaft (31) can move, and the front leg (11) is also provided with a third arc groove (112) in which the movable gear (32) can move, and the reverse gear tooth portion (34) includes a plurality of reverse gear teeth (341) arranged along the circumference of the third arc groove (112) and capable of meshing with the movable gear (32).

4. The stroller according to claim 2, characterized in that: The movable gear (32) comprises a first gear (321) capable of meshing with the positive gear tooth portion (33), and a second gear (322) is connected to the rear end of the first gear (321) and is coaxially arranged with the first gear (321) and capable of meshing with the reverse gear tooth portion (34).

5. The stroller according to claim 2, characterized in that: The axis center of the transverse axis (31) deviates from the first axis (A) and is arranged parallel to the first axis (A).

6. The baby stroller according to claim 1 or 2, characterized in that: The rear end of the seat support frame (2) is rotatably connected to the front leg (11) around the second axis (B).

7. The stroller according to claim 1, characterized in that: The support rod (14) is connected to a handlebar (15) which can slide or rotate relative to the support rod.

8. The stroller according to claim 1, characterized in that: A locking device (5) capable of locking the support rod (14) and the front leg (11) is provided between the support rod (14) and the front leg (11). The locking device (5) comprises a locking position (51) provided on the support rod (14). A locking member (52) capable of engaging with or disengaging from the locking position (51) is slidably connected inside the front leg (11). An elastic member (53) capable of keeping the locking member (52) in a locked state is also provided between the locking member (52) and the front leg (11). A handlebar (15) capable of driving the locking member (52) to disengage from the locking position (51) is slidably connected to the support rod (14). A latch (54) is also connected to the front leg (11) and is transversely penetrated through the locking member (52) and restricts the locking member (52) from disengaging from the front leg (11).

9. The baby stroller according to claim 1, characterized in that: The seat support frame (2) is also connected to a foldable child seat (6).

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