Seat assembly of stroller

Abstract

The seat assembly comprises a seat part and a backrest part which can be rotationally unfolded or folded relative to the seat part, a first connecting seat and a second connecting seat are arranged on the two sides of the rear end of the seat part, and a third connecting seat and a fourth connecting seat are arranged on the two sides of the lower end of the backrest part. The first connecting seat is rotatably connected with the third connecting seat, the second connecting seat is rotatably connected with the fourth connecting seat, a first clamping and locking assembly is arranged between the first connecting seat and the third connecting seat, and a second clamping and locking assembly is arranged between the second connecting seat and the fourth connecting seat. One side of the seat part is provided with an unlocking piece capable of driving the first clamping and locking assembly to be unlocked, and a transmission piece capable of driving the second clamping and locking assembly to be unlocked when the first clamping and locking assembly is unlocked is arranged between the first clamping and locking assembly and the second clamping and locking assembly. The folding chair is simple in structure and convenient to fold.

Description

[Technical Field]

[0001] This utility model relates to a seat assembly for a children's stroller. [Background Technology]

[0002] A stroller typically consists of a frame and a seat assembly mounted on the frame. Most modern strollers can be unfolded or folded. When unfolded, it's for a child to sit in; when folded, it's easy to carry or store. The typical folding operation involves first folding the seat assembly. This means unlocking the backrest from the seat and then rotating the backrest to fold it. Since the locking mechanism between the backrest and seat is usually located on the sides, unlocking requires pressing the unlocking tabs on both sides of the seat simultaneously. This also means pushing the seat forward to fold while pressing the unlocking tabs, making the operation inconvenient.

[0003] Therefore, this utility model was created based on the above-mentioned shortcomings. [Utility Model Content]

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a child stroller seat assembly that is simple in structure and easy to fold.

[0005] This utility model is achieved through the following technical solution:

[0006] A child stroller seat assembly includes a seat portion and a backrest that can be rotated and unfolded or folded relative to the seat portion. The rear ends of the seat portion are provided with a first connecting seat and a second connecting seat on both sides. The lower ends of the backrest are provided with a third connecting seat and a fourth connecting seat on both sides. The first connecting seat and the third connecting seat are rotatably connected, and the second connecting seat and the fourth connecting seat are rotatably connected. A first locking assembly is provided between the first and third connecting seats, and a second locking assembly is provided between the second and fourth connecting seats. One side of the seat portion is provided with an unlocking member capable of unlocking the first locking assembly. A transmission member is provided between the first and second locking assemblies, capable of unlocking the second locking assembly when the first locking assembly is unlocked.

[0007] The first locking assembly includes a first locking groove provided on a first connecting seat along the circumferential direction, and a second locking groove provided on a third connecting seat along the circumferential direction. A first spline is provided in the space enclosed by the first and third connecting seats, which can slide within it and engage with the first and second locking grooves simultaneously. The unlocking component is an unlocking button connected to the first connecting seat that can push the first spline out of the first locking groove when pressed. A first return spring is provided between the first spline and the third connecting seat, which can push the first spline to move and reset.

[0008] The second locking assembly includes a third locking groove on the second connecting seat along the circumferential direction, and a fourth locking groove on the fourth connecting seat along the circumferential direction. A second spline is provided in the space enclosed by the second and fourth connecting seats, which can slide within it and engage with the third and fourth locking grooves simultaneously. One end of the transmission member abuts against the second spline, and the other end abuts against the first spline. When the first spline moves and disengages from the first locking groove, the transmission member pushes the second spline to disengage from the fourth locking groove. A second return spring is provided between the second spline and the second connecting seat, which can push the second spline to move and reset.

[0009] The transmission component includes a transmission rod, and the lower end of the backrest is provided with a channel in which the transmission rod can slide. One end of the transmission rod abuts against the end face of the first spline, and the other end of the transmission rod is provided with a push plate protruding to one side. The push plate abuts against the end face of the second spline.

[0010] The front end of the seat is rotatably connected to a front baffle, and the upper end of the front baffle is rotatably connected to a U-shaped frame. The open end of the U-shaped frame is rotatably connected to both sides of the backrest.

[0011] The opening end of the U-shaped frame is detachably connected to both sides of the backrest. The backrest has protruding cylinders on both sides, and the ends of the cylinders have outwardly protruding flanges. The U-shaped frame has an opening groove that can be engaged with the cylinders from top to bottom. The U-shaped frame also has a mating groove that communicates with the opening groove and can rotate with the flanges.

[0012] A locking structure is provided between the cylinder and the U-shaped frame. The locking structure includes a locking post located inside the cylinder that can be pressed and slid laterally. The locking post has a barb. The cylinder has a mating hole for the barb to slide inside and to engage with the barb to prevent the locking post from disengaging from the cylinder. The opening end of the U-shaped frame has a locking hole that can engage with the locking post. A third return spring is also provided inside the cylinder to push the locking post to slide back to its original position.

[0013] The U-shaped frame is provided with an inclined surface that can press the end of the locking post when it is connected to the cylinder from top to bottom, causing the locking post to slide into the cylinder.

[0014] The backrest has a through hole running from front to back, and the backrest also has a mesh fabric for covering the through hole and allowing it to breathe.

[0015] The rear side of the seat portion is also provided with a first protruding seat and a second protruding seat, the third connecting seat is rotatably connected between the first protruding seat and the first connecting seat, and the fourth connecting seat is rotatably connected between the second protruding seat and the second connecting seat.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1. In this utility model, when the first locking component is unlocked by operating the unlocking component, the second locking component is unlocked by the transmission component, thereby realizing the linkage between the first locking component and the second locking component. Only the unlocking component on one side of the seat can be operated to unlock the first locking component and the second locking component at the same time. While the user operates the unlocking component with one hand, he / she can use the other hand to push the backrest forward to rotate and fold, making the folding operation of the seat component very convenient and quick.

[0018] 2. The seat of this invention is rotatably connected to a front baffle, and a U-shaped frame is rotatably connected to the upper end of the front baffle. The open end of the U-shaped frame is detachably and rotatably connected to the middle of the backrest. Therefore, the front baffle and the U-shaped frame ensure the safety of children when they are sitting in the seat assembly. When a child needs to get out of the seat assembly, simply separate the open end of the U-shaped frame from the backrest and then rotate the front baffle forward to make room for the child to exit. When the stroller needs to be folded, the first and second locking components can be unlocked, and then the backrest can be rotated forward. At this time, the front baffle, seat, U-shaped frame, and backrest all rotate relative to each other, thus folding together. Therefore, the seat assembly of this invention ensures convenient entry and exit for children while also being easy to fold and store, making it suitable for widespread application. [Attached Image Description]

[0019] Figure 1 This is one of the perspective views of this utility model;

[0020] Figure 2 This is the second perspective view of this utility model;

[0021] Figure 3 This is one of the exploded views of the components of this utility model;

[0022] Figure 4 This is the second exploded view of a component of this utility model;

[0023] Figure 5 This is the third exploded view of the components of this utility model;

[0024] Figure 6 This is the fourth exploded view of the components of this utility model;

[0025] Figure 7 This is a partial perspective view of the U-shaped frame of this utility model;

[0026] Figure 8 This is a partial sectional view of the present invention.

Detailed Implementation Methods

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

[0028] like Figures 1 to 5 A child stroller seat assembly includes a seat portion 1 and a backrest 2 that can be rotated and unfolded or folded relative to the seat portion 1. The seat portion 1 has a first connecting seat 31 and a second connecting seat 32 on both sides of its rear end. The backrest 2 has a third connecting seat 33 and a fourth connecting seat 34 on both sides of its lower end. The first connecting seat 31 and the third connecting seat 33 are rotatably connected, and the second connecting seat 32 and the fourth connecting seat 34 are rotatably connected. A first locking assembly 41 is provided between the first connecting seat 31 and the third connecting seat 33, and a second locking assembly 42 is provided between the second connecting seat 32 and the fourth connecting seat 34. One side of the seat portion 1 has an unlocking member 5 that can unlock the first locking assembly 41. A transmission member 6 is provided between the first locking assembly 41 and the second locking assembly 42, which can unlock the second locking assembly 42 when the first locking assembly 41 is unlocked. The two sides of the seat portion 1 are locked to the backrest 2 by the first locking assembly 41 and the second locking assembly 42, thereby ensuring that the seat assembly is securely locked in the unfolded state. When the seat assembly needs to be folded, the first locking assembly 41 is unlocked by operating the unlocking component 5. During the unlocking process, the first locking assembly 41 drives the second locking assembly 42 to unlock via the transmission component 6. Therefore, the first locking assembly 41 and the second locking assembly 42 on both sides of the seat part 1 can be unlocked simultaneously by operating the unlocking component 5 with one hand. The other hand can be used to operate the backrest 2 to rotate and fold forward, making the folding operation of the seat assembly very convenient and quick.

[0029] like Figures 1 to 5 As shown, the first locking assembly 41 includes a first locking groove 411 arranged circumferentially on the first connecting seat 31, and a second locking groove 412 arranged circumferentially on the third connecting seat 33. A first spline 413, which can slide within the space enclosed by the first and third connecting seats 31 and 33, engages simultaneously with the first and second locking grooves 411 and 412. The unlocking component 5 is an unlocking button 51 connected to the first connecting seat 31 and capable of pushing the first spline 413 out of the first locking groove 411 when pressed. A first return spring 414, capable of pushing the first spline 413 to move and reset, is provided between the first spline 413 and the third connecting seat 33. When the user presses the unlocking button 51 with one hand, the first spline 413 disengages from the first locking groove 411 on the first connecting seat 31. At this time, the first return spring 414 is compressed, and the transmission component 6 drives the second locking assembly 42 to unlock as the first spline 413 disengages from the first locking groove 411.

[0030] like Figures 1 to 5As shown, the second locking assembly 42 includes a third locking groove 421 provided on the second connecting seat 32 along the circumferential direction, and a fourth locking groove 422 provided on the fourth connecting seat 34 along the circumferential direction. A second spline 423 is provided in the space enclosed by the second connecting seat 32 and the fourth connecting seat 34, which can slide in it and engage with the third locking groove 421 and the fourth locking groove 422 simultaneously. One end of the transmission member 6 abuts against the second spline 423, and the other end abuts against the first spline 413. When the first spline 413 moves and disengages from the first locking groove 411, the transmission member 6 pushes the second spline 423 to disengage from the fourth locking groove 422. A second return spring 424 is provided between the second spline 423 and the second connecting seat 32, which can push the second spline 423 to move and reset. As the first spline 413 disengages from the first locking groove 411 by pressing the unlock button 51, the first spline 413 pushes the transmission component 6 to move. The transmission component 6 then pushes the second spline 423 to disengage from the fourth locking groove 422, thus unlocking the second locking assembly 42. Therefore, the entire structure is simple and ingenious, with the first spline 413 pushing the transmission component 6, which in turn pushes the second spline 423, resulting in a smooth unlocking action.

[0031] like Figures 3 to 5 As shown, the transmission component 6 includes a transmission rod 61. The lower end of the backrest 2 has a channel 21 for the transmission rod 61 to slide within. One end of the transmission rod 61 abuts against the end face of the first spline 413, and the other end of the transmission rod 61 has a push plate 62 protruding to one side. The push plate 62 abuts against the end face of the second spline 423. When the first spline 413 moves, it pushes one end of the transmission rod 61, and the other end of the transmission rod 61 pushes the second spline 423 through the push plate 62. The push plate 62 increases the contact area between the transmission component 6 and the second spline 423, making the movement of the second spline 423 smooth and stable.

[0032] like Figure 1 and Figure 2 As shown, a front baffle 71 is rotatably connected to the front end of the seat 1, and a U-shaped frame 72 is rotatably connected to the upper end of the front baffle 71. The open end of the U-shaped frame 72 is rotatably connected to both sides of the backrest 2. The U-shaped frame 72 and the front baffle 71 are designed to protect the child when sitting in the seat assembly, ensuring safety. When the stroller needs to be folded, the first locking assembly 41 and the second locking assembly 42 are unlocked, and the backrest 2 is rotated forward to fold. The U-shaped frame 72 and the front baffle 71 also rotate relative to the backrest 2 and the seat 1, thus coming together on the seat 1 to achieve folding.

[0033] like Figures 6 to 8As shown, the open end of the U-shaped frame 72 is detachably connected to both sides of the backrest 2. The backrest 2 has protruding cylinders 81 on both sides, and the ends of the cylinders 81 have outwardly protruding flanges 82. The U-shaped frame 72 has an opening groove 83 that can engage with the cylinders 81 from top to bottom. The U-shaped frame 72 also has a mating groove 84 that communicates with the opening groove 83 and can rotatably engage with the flanges 82. When a child needs to enter or exit the seating assembly, the U-shaped frame 72 is detached from the backrest 2, providing sufficient space for the child to enter and exit. After the child sits in or exits the seating assembly, the U-shaped frame 72 can be reconnected to the backrest 2. Especially after a child exits the seating assembly, rotating the backrest 2 relative to the seat 1 can cause the front panel 72 and the U-shaped frame 72 to rotate and fold. When the U-shaped frame 72 rotates, the groove wall of the mating groove 84 moves relative to the flange 82.

[0034] like Figures 6 to 8 As shown, a locking structure is provided between the cylinder 81 and the U-shaped frame 72. The locking structure includes a locking post 91 located inside the cylinder 81 and capable of sliding laterally when pressed. The locking post 91 has a barb 92. The cylinder 81 has a mating hole 93 for the barb 92 to slide within and engage with the barb 92 to prevent the locking post 91 from disengaging from the cylinder 81. The open end of the U-shaped frame 72 has a locking hole 94 that engages with the locking post 91. A third return spring 95 is also provided inside the cylinder 81 to push the locking post 91 back to its original position. The locking structure is used to lock the U-shaped frame 72 and the backrest 2 to prevent them from disengaging. When it is necessary to detach the U-shaped frame 72 from the backrest 2, simply press the locking post 91. After the locking post 91 exits from the locking hole 94, the U-shaped frame 72 can be removed upwards, thus separating the U-shaped frame 72 from the backrest 2 for easy access for children.

[0035] like Figure 8 As shown, the U-shaped frame 72 has an inclined surface 96 that, when connected to the cylinder 81 from top to bottom, can press the end of the locking post 91, causing the locking post 91 to slide into the cylinder 81. When it is necessary to connect the U-shaped frame 72 to the backrest 2 again, simply fold the cylinder 81 in half with the opening slot 83, and then push the U-shaped frame 72 downwards. The inclined surface 96 will then push the locking post 91 into the cylinder 81, compressing the third return spring 95. When the U-shaped frame 72 is installed in place and the locking hole 94 is aligned with the locking post 91, the third return spring 95 pushes the locking post 91 to move and reset, locking it back into the locking hole 94. Therefore, when connecting the backrest 2 and the U-shaped frame 72, simply press the U-shaped frame 72 downwards; the operation is very convenient and quick.

[0036] like Figure 1 and Figure 2As shown, the backrest 2 is provided with a through hole 22 that runs through the front and back. The backrest 2 is also provided with a mesh fabric (not shown in the figure) for covering the through hole 22 and allowing for ventilation, so that the backrest 2 has good permeability in the front and back, making it comfortable for children to sit on.

[0037] like Figures 1 to 5 As shown, the rear side of the seat 1 is also provided with a first protruding seat 11 and a second protruding seat 12. The third connecting seat 33 is rotatably connected between the first protruding seat 11 and the first connecting seat 31. The fourth connecting seat 34 is rotatably connected between the second protruding seat 12 and the second connecting seat 32, and has a guiding function, so that the backrest 2 can be unfolded or folded smoothly.

[0038] The present invention has been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the invention.

Claims

1. A seat assembly for a child stroller, characterized in that: The device includes a seat (1) and a backrest (2) that can rotate and unfold or fold relative to the seat (1). The seat (1) has a first connecting seat (31) and a second connecting seat (32) on both sides of its rear end. The backrest (2) has a third connecting seat (33) and a fourth connecting seat (34) on both sides of its lower end. The first connecting seat (31) and the third connecting seat (33) are rotatably connected, and the second connecting seat (32) and the fourth connecting seat (34) are rotatably connected. A first locking assembly (41) is provided between the first connecting seat (31) and the third connecting seat (33). A second locking assembly (42) is provided between the second connecting seat (32) and the fourth connecting seat (34). An unlocking member (5) that can drive the first locking assembly (41) to unlock is provided on one side of the seat (1). A transmission member (6) that can drive the second locking assembly (42) to unlock when the first locking assembly (41) is unlocked is provided between the first locking assembly (41) and the second locking assembly (42).

2. The seat assembly of the stroller according to claim 1, characterized in that: The first locking assembly (41) includes a first locking groove (411) provided on the first connecting seat (31) along the circumferential direction, and a second locking groove (412) provided on the third connecting seat (33) along the circumferential direction. A first spline (413) is provided in the space enclosed by the first connecting seat (31) and the third connecting seat (33) and can slide therein to engage with the first locking groove (411) and the second locking groove (412) at the same time. The unlocking member (5) is an unlocking button (51) connected to the first connecting seat (31) and can push the first spline (413) out of the first locking groove (411) when pressed. A first return spring (414) is provided between the first spline (413) and the third connecting seat (33) and can push the first spline (413) to move and reset.

3. The seat assembly of the stroller according to claim 2, characterized in that: The second locking assembly (42) includes a third locking groove (421) provided on the second connecting seat (32) along the circumferential direction, and a fourth locking groove (422) provided on the fourth connecting seat (34) along the circumferential direction. A second spline (423) is provided in the space enclosed by the second connecting seat (32) and the fourth connecting seat (34) and can slide therein to engage with the third locking groove (421) and the fourth locking groove (422) at the same time. One end of the transmission member (6) abuts against the second spline (423) and the other end abuts against the first spline (413). When the first spline (413) moves and disengages from the first locking groove (411), the transmission member (6) pushes the second spline (423) to disengage from the fourth locking groove (422). A second return spring (424) is provided between the second spline (423) and the second connecting seat (32) and can push the second spline (423) to move and reset.

4. The seat assembly of the stroller according to claim 3, characterized in that: The transmission component (6) includes a transmission rod (61). The lower end of the backrest (2) is provided with a channel (21) in which the transmission rod (61) can slide. One end of the transmission rod (61) abuts against the end face of the first spline (413). The other end of the transmission rod (61) is provided with a push plate (62) protruding to one side. The push plate (62) abuts against the end face of the second spline (423).

5. The seat assembly of the stroller according to any one of claims 1 to 4, characterized in that: The front end of the seat (1) is rotatably connected to a front baffle (71), and the upper end of the front baffle (71) is rotatably connected to a U-shaped frame (72). The open end of the U-shaped frame (72) is rotatably connected to both sides of the backrest (2).

6. The seat assembly of the stroller according to claim 5, characterized in that: The opening end of the U-shaped frame (72) is detachably connected to both sides of the backrest (2). The backrest (2) has protruding cylinders (81) on both sides. The end of the cylinder (81) has a flange (82) protruding outward. The U-shaped frame (72) has an opening groove (83) that can be engaged with the cylinder (81) from top to bottom. The U-shaped frame (72) also has a mating groove (84) that communicates with the opening groove (83) and can rotate with the flange (82).

7. The seat assembly of the stroller according to claim 6, characterized in that: A locking structure is provided between the cylinder (81) and the U-shaped frame (72). The locking structure includes a locking post (91) located inside the cylinder (81) and capable of being pressed and sliding laterally. The locking post (91) is provided with a barb (92). The cylinder (81) is provided with a mating hole (93) for the barb (92) to slide inside and to cooperate with the barb (92) to prevent the locking post (91) from disengaging from the cylinder (81). The opening end of the U-shaped frame (72) is provided with a locking hole (94) that can engage with the locking post (91). The cylinder (81) is also provided with a third return spring (95) that can push the locking post (91) to slide back to its original position.

8. The seat assembly of the stroller according to claim 7, characterized in that: The U-shaped frame (72) is provided with an inclined surface (96) that can press the end of the locking post (91) and cause the locking post (91) to slide into the cylinder (81) when it is connected to the cylinder (81) from top to bottom.

9. The seat assembly of the stroller according to claim 1, characterized in that: The backrest (2) is provided with a through hole (22) that runs through the front and back, and the backrest (2) is also provided with a mesh fabric that covers the through hole (22) and is breathable.

10. The seat assembly of the stroller according to claim 1, characterized in that: The seat part (1) is further provided with a first protruding seat (11) and a second protruding seat (12) on the rear side. The third connecting seat (33) is rotatably connected between the first protruding seat (11) and the first connecting seat (31). The fourth connecting seat (34) is rotatably connected between the second protruding seat (12) and the second connecting seat (32).

Images