Baby stroller

Abstract

The utility model discloses a child stroller which comprises a front leg frame, a front connecting seat is fixedly arranged at the upper end of the front leg frame, front wheels are arranged at the lower end of the front leg frame, a rear connecting seat is rotatably connected to the front connecting seat around a first axis, and a rear leg frame which can rotate together with the rear connecting seat to be folded towards the front leg frame is fixedly connected to the rear connecting seat. The baby stroller further comprises a push rod assembly, the push rod assembly comprises a push rod seat which is rotatably connected with the front connecting seat around a second axis, a push rod which can rotate together with the push rod seat to be folded towards the rear leg frame is fixedly arranged on the push rod seat, and the baby stroller further comprises a seat supporting piece. The rear side of the seat supporting piece is rotatably connected with the front connecting base around a third axis, and a transmission part capable of driving the seat supporting piece to rotate and draw close to the front leg frame when the rear connecting base rotates and is folded relative to the front connecting base is arranged between the front side of the seat supporting piece and the rear connecting base. The folding chair is simple in structure, convenient to fold and flexible to fold.

Description

Technical field

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

[0002] Strollers are common products for children as they grow up. Current strollers can generally be unfolded or folded. In the unfolded state, they are suitable for children to ride in, while in the folded state, they are easy to carry or store.

[0003] There are various types of child strollers on the market, and their folding connecting rod mechanisms are not the same. The present invention provides a new type of child stroller that is different from the existing technology. [Utility Model Content]

[0004] The utility model aims to overcome the deficiencies of the prior art and provide a child stroller which has a simple structure, is easy to operate, and can be folded and opened flexibly.

[0005] The utility model is realized through the following technical solutions:

[0006] The rear leg frame is folded and the rear wheels are connected to the front leg frame by the front connecting seat and the rear connecting seat, and the rear wheels are connected to the rear leg frame by the front connecting seat.

[0007] The transmission component includes an intermediate transmission rod whose middle part is hinged to the front connecting seat or the front leg frame around the fourth axis. A front transmission rod is provided between the upper end of the intermediate transmission rod and the front side of the seat support and is hinged to the two. A rear transmission rod is provided between the lower end of the intermediate transmission rod and the rear connecting seat. One end of the rear transmission rod is hinged to the lower end of the intermediate transmission rod, and the other end is hinged to the rear connecting seat and deviated from the first axis.

[0008] The locking device includes a sliding rod that can slide up and down in the push rod seat, a transverse locking pin is provided on the sliding rod, and a strip hole is provided on the push rod seat for the locking pin to slide inside. The front connecting seat and the rear connecting seat are radially provided with locking grooves that can engage or disengage with the locking pin. The front connecting seat and the rear connecting seat are also provided with a first giving way groove along the circumferential direction that is connected to the locking groove and makes way for the locking pin when the locking pin disengages from the locking groove. A reset spring is also provided in the push rod seat that can push the sliding rod to return upward.

[0009] The push rod includes a lower rod body fixedly connected to the push rod seat, an upper rod body that can be telescoped therein is provided in the lower rod body, a horizontal push handle is provided at the upper end of the upper rod body, and a pushing portion is provided at the lower end of the upper rod body that can push the sliding rod to slide downward when the upper rod body is retracted into the lower rod body.

[0010] The rear transmission rod is hinged to the rear connecting seat through a transverse axis. The push rod seat is provided with a second make way groove for the transverse axis when the push rod seat rotates relative to the front connecting seat. The front connecting seat is provided with a fourth make way groove for the transverse axis to move inside when the rear connecting seat rotates and folds relative to it.

[0011] The front connecting seat, the rear connecting seat and the push rod seat are coaxially rotatably connected via a transverse axis, and the sliding rod is provided with a third making way slot for the transverse axis when the sliding rod slides.

[0012] The seat support is connected with a seat assembly, which comprises a seat portion connected to the seat support, and a backrest portion which can be rotated, unfolded or folded relative to the seat portion at the rear end.

[0013] The middle part of the backrest is rotatably connected with a U-shaped surrounding frame, and a front stopper hingedly connected to the front end of the surrounding frame and the front end of the seat is provided between the two.

[0014] The seat portion is rotatably connected to the seat support component and can be reversed forward and backward.

[0015] The front leg frame is also connected to a support seat for placing children's feet, and an adjustment mechanism for adjusting the position of the support seat is provided between the support seat and the front leg frame. The adjustment mechanism includes a plurality of positioning slots provided on the front leg frame, and the support seat is provided with a clamping seat connected to it and clamped on the front leg frame. A sliding seat that can slide therein is provided in the space enclosed by the support seat and the clamping seat, and a clamping block that can engage or disengage with the corresponding positioning slot is connected to the sliding seat. The clamping block or the sliding seat is also connected to a handle exposed on the clamping seat and capable of pulling the clamping block out of the positioning slot. An elastic member that can drive the clamping block to reset is also provided in the space enclosed by the support seat and the clamping seat.

[0016] Compared with the prior art, the utility model has the following advantages:

[0017] 1. When the stroller of the utility model needs to be folded, the locking device is first unlocked, and then the push rod assembly is rotated backward to move it closer to the rear leg frame. Then, the front connecting seat is lifted upward, and the rear leg frame is rotated and moved closer to the front leg frame. During this process, the rear connecting seat drives the seat support to rotate relative to the front connecting seat through the transmission component and move closer to the front leg frame. Finally, the push rod assembly, the rear leg frame, and the seat support are all moved closer to the front leg frame, thereby realizing the folding of the stroller. The entire stroller has a simple structure and is easy to fold. After the locking device is unlocked, the push rod assembly needs to be rotated and the stroller needs to be lifted upward. It is flexible to fold and is suitable for popularization and application.

[0018] 2. When the rear leg frame of the present invention rotates and approaches the front leg frame, the rear connecting seat deviates from the first axis position and rotates relative to the rear end of the rear transmission rod, and the rear connecting seat pushes the rear transmission rod forward, and the rear transmission rod pushes the lower end of the intermediate transmission rod to rotate the intermediate transmission rod relative to the front leg frame or the front connecting seat, and the upper end of the intermediate transmission rod rotates relative to the front transmission rod, thereby pulling the front transmission rod, and the upper end of the front transmission rod rotates with the front side of the seat support and pulls the seat support to rotate relative to the front connecting seat around the third axis and approach the front leg frame, so that the rear leg frame is linked with the seat support when rotating and folding, ensuring that the folding operation of the child stroller is convenient and quick, and flexible.

[0019] 3. The middle part of the backrest of the utility model is rotatably connected to a U-shaped frame, and a front stopper hingedly connected to the front end of the frame and the seat is provided between the front end of the frame and the front end of the seat. When a child sits in the seat assembly, the child is restricted by the frame and the front stopper, so that the child can sit safely in the seat assembly and is not likely to slip, thereby ensuring safety.

Brief Description of the Drawings

[0020] Figure 1 It is a three-dimensional diagram of the utility model;

[0021] Figure 2 This is a side view of the utility model in the expanded state;

[0022] Figure 3 This is a side view of the utility model during the folding process;

[0023] Figure 4 This is a side view of the utility model in a folded state;

[0024] Figure 5 It is a cross-sectional view of the components of the utility model;

[0025] Figure 6 This is one of the exploded views of the components of the present utility model;

[0026] Figure 7This is the second exploded view of the components of the present invention. [Specific implementation method]

[0027] The present invention will be further described below with reference to the accompanying drawings:

[0028] like Figures 1 to 4 As shown, a child stroller has an unfolded state and a folded state. In the unfolded state, the stroller is suitable for children to ride in and travel, and in the folded state, the stroller is convenient for storage or carrying.

[0029] like Figures 1 to 4 As shown, the utility model stroller includes a front leg frame 1, a front connecting seat 11 is fixedly provided at the upper end of the front leg frame 1, a front wheel 12 is provided at the lower end of the front leg frame 1, a rear connecting seat 21 is rotatably connected to the front connecting seat 11 around a first axis A, a rear leg frame 2 is fixedly connected to the rear connecting seat 21 and can rotate together with the rear leg frame 1 and fold close to the front leg frame 1, a rear wheel 22 is provided at the lower end of the rear leg frame 2, and the stroller also includes a push rod assembly 3, which includes a push rod assembly 3 connected to the front connecting seat 11 is rotatably connected to a push rod seat 31 around a second axis B, and a push rod 32 is fixedly provided on the push rod seat 31, which can rotate together with the push rod seat and fold close to the rear leg frame 2. The child stroller also includes a seat support 4, the rear side of the seat support 4 is rotatably connected to the front connecting seat 11 around a third axis C, and a transmission component 5 is provided between the front side of the seat support 4 and the rear connecting seat 21, which can drive the seat support 4 to rotate close to the front leg frame 1 when the rear connecting seat 21 is rotated and folded relative to the front connecting seat 11. When the stroller needs to be folded, the push rod assembly 3 is rotated backward to move it close to the rear leg frame 2, and then the front connecting seat 11 is lifted upward. The rear leg frame 2 is rotated and moved close to the front leg frame 1. During this process, the rear connecting seat 21 drives the seat support 4 to rotate relative to the front connecting seat 11 through the transmission component 5 and move close to the front leg frame 1. Finally, the push rod assembly 3, the rear leg frame 2, and the seat support 4 are all moved close to the front leg frame 1, thereby realizing the folding of the stroller. The entire stroller has a simple structure and is easy to fold. You only need to rotate the push rod assembly 3 and then lift the stroller upward, and it is flexible to fold.

[0030] like Figures 1 to 6As shown, the transmission component 5 includes an intermediate transmission rod 51 whose middle part is hinged to the front connecting seat 11 or the front leg frame 1 around the fourth axis D, and a front transmission rod 52 hinged to the two is provided between the upper end of the intermediate transmission rod 51 and the front side of the seat support 4, and a rear transmission rod 53 is provided between the lower end of the intermediate transmission rod 51 and the rear connecting seat 21, one end of the rear transmission rod 53 is hinged to the lower end of the intermediate transmission rod 51, and the other end is hinged to the rear connecting seat 21 and deviated from the first axis A. When the rear leg frame 2 rotates and approaches the front leg frame 1, the position on the rear connecting seat 21 that deviates from the first axis A rotates relative to the rear end of the rear transmission rod 53, and the rear connecting seat 21 pushes the rear transmission rod 53 forward, and the rear transmission rod 53 pushes the lower end of the intermediate transmission rod 51 to make the intermediate transmission rod 51 rotate relative to the front leg frame 1 or the front connecting seat 11, and the upper end of the intermediate transmission rod 51 rotates relative to the front transmission rod 52, thereby pulling the front transmission rod 52, and the upper end of the front transmission rod 52 rotates with the front side of the seat support 4 and pulls the seat support 4 to rotate relative to the front connecting seat 11 around the third axis C and approach the front leg frame 1, so that the rear leg frame 2 is linked with the seat support 4 when rotating and folding, ensuring that the folding operation of the child stroller is convenient and quick, and flexible to fold.

[0031] The seat support member 4 can be a plate-shaped structure or a member with a groove, so that the child can sit directly on it. Of course, for the further safety of the child, Figure 1 As shown, a seat assembly 8 may also be provided on the seat support 4. The seat assembly 8 includes a seat portion 81 connected to the seat support 4. A backrest 82 is connected to the rear end of the seat portion 81 and can be rotated relative to the seat portion 81 to expand or fold. When the stroller needs to be folded, the backrest 82 is first folded close to the seat portion 81.

[0032] like Figures 1 to 3 As shown, to further ensure the safety of children, a U-shaped frame 83 is rotatably connected to the middle of the backrest 82, and a front stopper 84 is provided between the front end of the frame 83 and the front end of the seat portion 81. The front stopper 84 and the frame 83 can restrain the child in the seat assembly 8 to ensure that the child does not slip out of the seat assembly 8.

[0033] In this embodiment, the seat portion 81 is rotatably connected to the seat support 4 and can be reversed in direction. Therefore, when an adult pushes the stroller, they can face the same direction as the child in the seat assembly 8, or they can push the stroller face to face with the child after rotating the seat portion 81, making it easier to interact with the child.

[0034] In this embodiment, the stroller further comprises a locking device for locking the stroller in the unfolded state. After the locking device is unlocked, the stroller can be moved from the unfolded state to the folded state. Figure 5 and Figure 6As shown, the locking device includes a sliding rod 61 that can slide up and down within the push rod seat 31, a transverse locking pin 62 provided on the sliding rod 61, a strip-shaped hole 34 in which the locking pin 62 can slide, and a locking groove 63 that can engage or disengage with the locking pin 62 is radially provided on the front connecting seat 11 and the rear connecting seat 21. The front connecting seat 11 and the rear connecting seat 21 are also provided with a first clearance groove 64 that is in communication with the locking groove 63 and makes way for the locking pin 62 when the locking pin 62 disengages from the locking groove 63. The push rod seat 3 is also provided with a return spring 65 that can push the sliding rod 61 upward. When the locking device is unlocked, the sliding rod 61 is pushed downward to disengage the locking pin 62 on the sliding rod 61 from the locking groove 63 on the front connecting seat 11 and the rear connecting seat 21. At this time, the locking pin 62 enters the first clearance groove 64, and the push rod assembly 3 can be rotated to move closer to the rear leg frame 2.

[0035] like Figure 6 As shown, the push rod 32 includes a lower rod 321 fixedly connected to the push rod seat 31. The lower rod 321 is provided with an upper rod 322 that can be extended and retracted therein. The upper end of the upper rod 322 is provided with a horizontal push handle 323. The lower end of the upper rod 322 is provided with a push portion 324 that can push the sliding rod 61 downward when the upper rod 322 is retracted into the lower rod 321. When the upper rod 322 is extended outward, the push rod assembly 3 can be extended, making it easier for adults to push the stroller. When the child stroller needs to be folded, the upper rod 322 is first retracted inward into the lower rod 321. The push portion 324 at the lower end of the upper rod 322 pushes the sliding rod 61, thereby unlocking the locking device. The unlocking operation is very convenient and quick.

[0036] like Figure 5 As shown, the rear transmission rod 53 is hinged to the rear connecting seat 21 via a transverse shaft 54. The push rod seat 31 is provided with a second clearance groove 33 that allows the transverse shaft 54 to move when the push rod seat 31 rotates relative to the front connecting seat 11. The front connecting seat 11 is provided with a fourth clearance groove 13 that allows the transverse shaft 54 to move within it when the rear connecting seat 21 rotates and folds relative to it. The provision of the second clearance groove 33 and the fourth clearance groove 13 prevents interference between the push rod assembly 3 and the rear leg frame 2 and the transverse shaft 54 during rotation, allowing the stroller to be folded smoothly.

[0037] like Figure 5 As shown, the front connecting seat 11, the rear connecting seat 21 and the push rod seat 31 are coaxially rotatably connected via the transverse axis 7, making the stroller compact and flexible to fold. The sliding rod 61 is provided with a third clearance groove 66 for making way for the transverse axis 7 when it slides.

[0038] like Figure 1As shown, the front leg frame 1 is also connected to a support seat 9 for placing children's feet, so that children can sit comfortably.

[0039] like Figure 7 As shown, an adjustment mechanism for adjusting the position of the support seat 9 is provided between the support seat 9 and the front leg frame 1, and the adjustment mechanism includes a plurality of positioning grooves 91 provided on the front leg frame 1, and the support seat 9 is provided with a clamping seat 92 connected thereto and clamped on the front leg frame 1, and a sliding seat 93 capable of sliding therein is provided in the space enclosed by the support seat 9 and the clamping seat 92, and the sliding seat 93 is connected with a snapping block 94 that can engage or disengage with the corresponding positioning groove 91, and the snapping block 94 or the sliding seat 93 is also connected with a pull handle 95 exposed on the clamping seat 92 and capable of pulling the snapping block 94 out of the positioning groove 91, and the space enclosed by the support seat 9 and the clamping seat 92 is also provided with an elastic member 96 that can drive the snapping block 94 to reset. When the position of the support base 9 needs to be adjusted, the handle 95 is simply pulled, and the handle 95 disengages the engaging block 94 from the positioning groove 91. At this time, the support base 9 can be slid to adjust its position. When the adjustment is in place, the handle 95 is released, and the elastic member 96 drives the engaging block 94 to return to the original position and reengage the positioning groove 91. For children of different heights, the support base 9 can be adjusted to support the child's feet.

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

Claims

1. A child stroller capable of moving from an unfolded state to a folded state after a locking device is unlocked, characterized in that: The stroller comprises a front leg frame (1), wherein the upper end of the front leg frame (1) is fixedly provided with a front connecting seat (11), the lower end of the front leg frame (1) is provided with a front wheel (12), the front connecting seat (11) is rotatably connected to a rear connecting seat (21) around a first axis (A), the rear connecting seat (21) is fixedly connected to a rear leg frame (2) which can rotate together with the rear leg frame and fold close to the front leg frame (1), the lower end of the rear leg frame (2) is provided with a rear wheel (22), and the stroller further comprises a push rod assembly (3), the push rod assembly (3) comprises a push rod assembly connected to the front connecting seat (11) around a second axis (A) and a push rod assembly (3). The push rod seat (31) is rotatably connected to the line (B), and a push rod (32) is fixed on the push rod seat (31) and can be rotated together with the push rod seat to be folded toward the rear leg frame (2). The child stroller also includes a seat support (4), the rear side of the seat support (4) is rotatably connected to the front connecting seat (11) around a third axis (C), and a transmission component (5) is provided between the front side of the seat support (4) and the rear connecting seat (21) to drive the seat support (4) to rotate and move toward the front leg frame (1) when the rear connecting seat (21) is rotated and folded relative to the front connecting seat (11).

2. The stroller according to claim 1, characterized in that: The transmission component (5) includes an intermediate transmission rod (51) whose middle part is hinged to the front connecting seat (11) or the front leg frame (1) around a fourth axis (D); a front transmission rod (52) is provided between the upper end of the intermediate transmission rod (51) and the front side of the seat support member (4) and the two hingedly connected; a rear transmission rod (53) is provided between the lower end of the intermediate transmission rod (51) and the rear connecting seat (21); one end of the rear transmission rod (53) is hinged to the lower end of the intermediate transmission rod (51), and the other end is hinged to the rear connecting seat (21) and is offset from the first axis (A).

3. The stroller according to claim 1 or 2, characterized in that: The locking device includes a sliding rod (61) that can slide up and down in the push rod seat (31), a transverse locking pin (62) is provided on the sliding rod (61), a strip hole (34) is provided on the push rod seat (31) for the locking pin (62) to slide inside, a locking groove (63) is radially provided on the front connecting seat (11) and the rear connecting seat (21) and can be engaged with or disengaged from the locking pin (62), and a first giving way groove (64) is also provided on the front connecting seat (11) and the rear connecting seat (21) along the circumferential direction, which is in communication with the locking groove (63) and gives way to the locking pin (62) when the locking pin (62) is disengaged from the locking groove (63), and a reset spring (65) is also provided in the push rod seat (31) for pushing the sliding rod (61) to reset upward.

4. The stroller according to claim 3, characterized in that: The push rod (32) includes a lower rod body (321) fixedly connected to the push rod seat (31), an upper rod body (322) capable of being telescoped therein is provided in the lower rod body (321), a transverse hand push handle (323) is provided at the upper end of the upper rod body (322), and a pushing portion (324) is provided at the lower end of the upper rod body (322) capable of pushing the sliding rod (61) to slide downward when the upper rod body (322) is retracted into the lower rod body (321).

5. The stroller according to claim 2, characterized in that: The rear transmission rod (53) is hinged to the rear connecting seat (21) via a transverse shaft (54); the push rod seat (31) is provided with a second paving groove (33) for paving the way for the transverse shaft (54) when the push rod seat (31) rotates relative to the front connecting seat (11); and the front connecting seat (11) is provided with a fourth paving groove (13) for the transverse shaft (54) to move within when the rear connecting seat (21) rotates and folds relative to the front connecting seat.

6. The stroller according to claim 3, characterized in that: The front connecting seat (11), the rear connecting seat (21) and the push rod seat (31) are coaxially rotatably connected via a transverse axis (7), and the sliding rod (61) is provided with a third making way slot (66) for making way for the transverse axis (7) when the sliding rod (61) slides.

7. The stroller according to claim 3, characterized in that: The seat support (4) is connected to a seat assembly (8), and the seat assembly (8) includes a seat portion (81) connected to the seat support (4), and a backrest portion (82) that can be rotated, unfolded or folded relative to the seat portion (81) is connected to the rear end of the seat portion (81).

8. The stroller according to claim 7, characterized in that: The middle part of the backrest (82) is rotatably connected to a U-shaped frame (83), and a front stopper (84) is provided between the front end of the frame (83) and the front end of the seat (81) and is hinged to the two.

9. The stroller according to claim 7, characterized in that: The seat portion (81) is rotatably connected to the seat support member (4) and can be reversed forward and backward.

10. The stroller according to claim 1, characterized in that: The front leg frame (1) is also connected to a support seat (9) for placing the child's feet. An adjustment mechanism for adjusting the position of the support seat (9) is provided between the support seat (9) and the front leg frame (1). The adjustment mechanism includes a plurality of positioning grooves (91) provided on the front leg frame (1). The support seat (9) is provided with a clamping seat (92) connected thereto and clamped on the front leg frame (1). The space enclosed by the support seat (9) and the clamping seat (92) is provided with a space that can be adjusted therein. A sliding seat (93) is provided, wherein the sliding seat (93) is connected with a snap-fit block (94) which can be engaged with or disengaged from the corresponding positioning groove (91); the snap-fit block (94) or the sliding seat (93) is also connected with a handle (95) which is exposed on the clamping seat (92) and can pull the snap-fit block (94) to disengage from the positioning groove (91); and an elastic member (96) which can drive the snap-fit block (94) to reset is also provided in the space enclosed by the support seat (9) and the clamping seat (92).

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