Limiting mechanism for limiting angle of backrest of child seat

Abstract

The utility model discloses a limiting mechanism for limiting the angle of a backrest of a child seat, which comprises a base, a seat component capable of rotating and reversing relative to the base is connected onto the base, the seat component comprises a seat part rotatably connected onto the base, and a backrest part capable of rotating relative to the seat part is connected onto the seat part. A gear adjusting device capable of adjusting the included angle gear of the backrest part and the seat part is arranged between the backrest part and the seat part, and a stopping device capable of preventing the backrest part from continuously rotating when the backrest part rotates to the maximum included angle gear is arranged between the base and the seat assembly. When the stop device is not unlocked, the backrest part and the seat part are always kept at the gears smaller than or equal to the maximum included angle, so that the safety of a child is protected, and the safety of the seat is improved.

Description

[Technical field]

[0001] The utility model relates to a limiting mechanism for limiting the backrest angle of a child seat. [Background technology]

[0002] The existing child seat can be changed in direction relative to the stroller frame by a reversing device, and after the change in direction, the child seat can also adjust the angle of the backrest on the child seat relative to the seat part by a gear adjustment device, so as to facilitate the child to sit in a sitting position or lie down. When the backrest and the push rod assembly on the frame are on the same side, the gear adjustment device is unlocked and the backrest rotates backward. Since the push rod assembly is located at the rear side of the backrest, it is impossible for the backrest to rotate to the bottom of the seat part. However, when the child seat is changed in direction and the angle position of the backrest is adjusted, since there is no push rod assembly at the rear side of the backrest, the backrest is likely to continue to rotate after rotating to the maximum angle position relative to the seat part and rotate to the bottom of the seat part, which poses a great safety hazard.

[0003] The present invention is developed based on the above-mentioned shortcomings. [Contents of the utility model]

[0004] The utility model aims to overcome the deficiencies of the prior art and to provide a limiting mechanism for limiting the angle of the child seat backrest, which can prevent the backrest from continuing to rotate after the backrest is rotated and adjusted to a maximum angle relative to the seat portion, and makes the child seat safer when sitting.

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

[0006] A limiting mechanism for limiting the angle of a child seat backrest, comprising a base 1, to which is connected a seat assembly 2 capable of rotating and reversing relative to the base 1, the seat assembly 2 comprising a seat portion 21 rotatably connected to the base 1, to which is connected a backrest portion 22 capable of rotating relative to the seat portion 21, a position adjusting device 23 capable of adjusting an angle between the backrest portion 22 and the seat portion 21, and a stopper 3 capable of preventing the backrest portion 22 from continuing to rotate when the backrest portion 22 rotates to a maximum angle.

[0007] The stop device 3 includes a stop member 32 which is arranged on the seat portion 21 and can slide relative to the seat portion 21. The backrest portion 22 is provided with a stop portion 31 which can abut against the stop member 32 when the stop member 32 extends out of the seat portion 21. The seat portion 21 is also provided with an elastic member 33 which can keep the stop member 32 in an extended state. The base 1 is also provided with a driving portion 34 which can drive the stop member 32 to slide relative to the seat portion 21 and disengage from the stop portion 31 when the seat portion 21 rotates relative to the base 1.

[0008] The backrest 22 is provided with a groove 221 in which the stopper 32 can move when the backrest 22 rotates. The stopper 31 is the groove wall of the groove 221 .

[0009] The stopper 32 comprises a stopper block 321 slidably connected to the seat portion 21 , and the stopper block 321 is provided with an extension portion 322 extending and snapped into the base 1 .

[0010] The extension portion 322 is a connecting column extending downward, the base 1 is provided with an annular groove 11, the driving portion 34 is a groove wall on the annular groove 11, and the seat portion 21 is also provided with a straight groove 211 for the extension portion 322 to pass through and can guide the extension portion 322 to slide relative to the seat portion 21 when the extension portion 322 is driven by the groove wall of the annular groove. When the seat portion 21 rotates relative to the base 1, the groove wall of the annular groove 11 pushes the connecting column and drives the stopper 32 to slide relative to the seat portion 21.

[0011] The inner side wall of the groove 221 is in the form of an arc surface, and the stop block 321 is provided with an arc surface 3211 that fits the arc surface.

[0012] Compared with the prior art, the utility model has the following advantages: when the backrest needs to adjust the angle position with the seat, the position adjustment device is unlocked, and the backrest can be freely adjusted relative to the seat; when the backrest is adjusted to the maximum angle position relative to the seat, the stop device can prevent the backrest from continuing to rotate relative to the seat, thereby avoiding the backrest from rotating to the bottom of the seat; when the stop device is not unlocked, the backrest and the seat always remain at a position less than or equal to the maximum angle, thereby protecting the safety of the children riding in the seat and improving the safety of the seat.

Brief Description of the Drawings

[0013] Figure 1 It is a three-dimensional diagram of the limiting mechanism of the utility model for limiting the backrest angle of the child seat;

[0014] Figure 2 yes Figure 1 A magnified image of area A;

[0015] Figure 3 It is a cross-sectional view of the limiting mechanism of the utility model for limiting the backrest angle of the child seat when the backrest portion is away from one side of the push rod assembly on the child frame;

[0016] Figure 4 yes Figure 3 Enlarged view of area B;

[0017] Figure 5 It is an exploded view of the limiting mechanism of the utility model for limiting the backrest angle of the child seat;

[0018] Figure 6 It is a three-dimensional diagram of the base of the limiting mechanism for limiting the backrest angle of the child seat of the utility model;

[0019] Figure 7 This is a diagram showing the use state of the limiting mechanism for limiting the backrest angle of the child seat of the utility model when the backrest and the seat are in the maximum adjustment gear position;

[0020] Figure 8 yes Figure 7 Enlarged view of the middle C area;

[0021] Fig. 9 It is a three-dimensional diagram of the seat portion and the stopper in the limiting mechanism for limiting the backrest angle of the child seat of the utility model;

[0022] Fig.10 It is an exploded view of the seat portion and the stopper in the limiting mechanism for limiting the backrest angle of the child seat of the utility model;

[0023] Fig.11 This is a diagram of the utility model in use when the backrest portion of the child seat is located on one side of the push rod assembly on the baby carriage frame for limiting the backrest angle of the child seat;

[0024] Fig.12 This is a state diagram of the utility model for limiting the backrest angle of a child seat, in which the backrest portion is located below the seat portion and close to the push rod assembly; [Specific implementation method]

[0025] The utility model is further described below in conjunction with the accompanying drawings:

[0026] like Figures 1 to 12 As shown, a limiting mechanism for limiting the angle of a child seat backrest comprises a base 1, to which is connected a seat assembly 2 capable of rotating and reversing relative to the base 1, the seat assembly 2 comprising a seat portion 21 connected to the base 1, to which is connected a backrest portion 22 capable of rotating relative to the seat portion 21, a position adjusting device 23 capable of adjusting an angle between the backrest portion 22 and the seat portion 21 is provided, and a stopper 3 capable of preventing the backrest portion 22 from continuing to rotate when the backrest is rotated to the position where the position adjusting device 23 is adjusted to the maximum angle.

[0027] When the backrest 22 needs to adjust the angle with the seat 21, the position adjustment device 23 is unlocked, and the backrest 22 can freely adjust the position relative to the seat 21. Figure 3As shown, when the backrest 22 is adjusted to the maximum angle relative to the seat 21, the stopper 3 can prevent the backrest 22 from continuing to rotate relative to the seat 21, thereby preventing the backrest 22 from rotating below the seat 21. When the stopper 3 is not unlocked, the backrest 22 and the seat 21 are always kept at a position less than or equal to the maximum angle, thereby protecting the safety of the child and improving the safety of the seat. The gear adjustment device 23 in this embodiment is an existing gear adjustment device, which will not be described in detail here.

[0028] like Figure 4 and Figure 6 As shown, the stopper device 3 includes a stopper 32 disposed on the seat portion 21 and capable of sliding relative thereto, the backrest portion 22 is provided with a stopper 31 capable of abutting against the stopper 32 when the stopper 32 extends out of the seat portion 21, the seat portion 21 is also provided with an elastic member 33 capable of keeping the stopper 32 in an extended state, and the base 1 is also provided with a driving portion 34 capable of driving the stopper 32 to slide relative to the seat portion 21 and disengage from the stopper 31 when the seat portion 21 rotates relative to the base 1. When the stopper device 3 needs to be unlocked, the seat portion 21 is rotated, and the stopper 32 on the seat portion 21 rotates with the seat portion 21. During the rotation of the stopper 32, the stopper 32 is driven by the driving portion 34 on the base 1 to slide relative to the seat portion 21 and retract into the seat portion 21, and the stopper 32 is disengaged from the stopper 31 on the backrest portion 22. At this time, the seat assembly 2 rotates to a position where the push rod assembly 4 is located behind the backrest portion 22. Fig.11 Therefore, when the backrest 22 is located at one side of the push rod assembly 4, the stopper 32 will not abut against the stopper 31. Fig.12 As shown, the backrest portion 22 can also be rotated to below the seat portion 21 to achieve folding.

[0029] like Figure 2 As shown, the backrest 22 is provided with a groove 221 in which the stopper 32 can move when the backrest 22 rotates, and the stopper 31 is the groove wall of the groove 221. When the angle between the backrest 22 and the seat 21 is adjusted to the maximum angle, the lower side of the stopper 32 connected to the seat 21 abuts against the groove wall of the groove 221 to prevent the backrest 22 from continuing to rotate relative to the seat 21.

[0030] like Figure 5 As shown, the stopper 32 comprises a stopper block 321 slidably connected to the seat portion 21 , and the stopper block 321 is provided with an extension portion 322 extending and snapped into the base 1 .

[0031] like Figure 5 and Figure 6As shown, the extension part 322 is a connecting column extending downward, the base 1 is provided with an annular groove 11, the driving part 34 is a groove wall on the annular groove 11, and the seat part 21 is also provided with a straight groove 211 for the extension part 322 to pass through and can guide the extension part 322 to slide relative to the seat part 21 when the extension part 322 is driven by the groove wall of the annular groove. When the seat part 21 rotates relative to the base 1, the groove wall of the annular groove 11 pushes the connecting column and drives the stopper 32 to slide relative to the seat part 21. When the backrest part 22 rotates relative to the base 1 toward the side of the push rod assembly 4 of the baby carriage frame following the seat part 21, as shown in FIG. Fig.11 As shown, the groove wall of the annular groove 11 pushes the extension part 322, and the extension part 322 slides along the annular groove 11. During the sliding process, the extension part 32 is guided by the straight groove 211 and can only slide along the straight groove 211 relative to the seat part 21. When the extension part 322 slides, it drives the stop block 321 to slide. When the stop block 321 slides relative to the seat part 21, it compresses the elastic member 33. At this time, the stop block 321 is separated from the groove 221 on the backrest part 22 and completely enters the seat part 21. At this time, the rotation of the backrest part 22 relative to the seat part 21 is no longer restricted, and the backrest part 22 is located on the side of the push rod assembly 4 of the baby stroller frame. In other words, when the backrest part 22 is away from the push rod assembly 4 of the baby stroller frame, as shown in FIG. Figure 3 As shown, the stop device 3 prevents the backrest 22 from rotating relative to the seat portion 21 to a position greater than the maximum angle gear position, ensuring safety. When the backrest 22 rotates to the push rod assembly 4 close to the baby carriage frame, the stop device 3 is unlocked. Since the push rod assembly 4 is located at the rear side of the backrest 22 when the baby carriage frame is unfolded, the push rod assembly 4 plays a protective role. The backrest 22 cannot rotate to a position greater than the maximum angle gear position, ensuring safety. When the baby carriage frame is folded, the push rod assembly 4 moves to a position where it cannot block the backrest 22. Fig.12 As shown, the backrest portion 22 can be rotated relative to the seat portion 21 to a folding position greater than the maximum angle.

[0032] like Figure 6 As shown, the inner side wall of the groove 221 is an arc surface, and the stop block 321 is provided with an arc surface 3211 that fits with the arc surface. When the inner side wall of the groove 221 is an arc surface, it fits with the arc surface 3211 on the stop block 321, which can not only guide the stop block 321 to slide, but also make the backrest 22 rotate smoothly relative to the stop block 321.

Claims

1. A limiting mechanism for limiting the backrest angle of a child seat, characterized in that: The invention comprises a base (1), the base (1) being connected to a seat assembly (2) which can rotate and change direction relative to the base (1), the seat assembly (2) comprising a seat portion (21) which can be rotatably connected to the base (1), the seat portion (21) being connected to a backrest portion (22) which can rotate relative to the seat portion (21), a position adjustment device (23) which can adjust the angle between the backrest portion (22) and the seat portion (21) being provided between the backrest portion (22) and the seat portion (21), and a stop device (3) which can prevent the backrest portion (22) from continuing to rotate when the backrest portion (22) rotates to a maximum angle.

2. The limiting mechanism for limiting the backrest angle of a child seat according to claim 1, characterized in that: The stop device (3) comprises a stop member (32) provided on the seat portion (21) and capable of sliding relative thereto; the backrest portion (22) is provided with a stop member (31) capable of abutting against the stop member (32) when the stop member (32) extends out of the seat portion (21); the seat portion (21) is also provided with an elastic member (33) capable of keeping the stop member (32) in an extended state; and the base (1) is also provided with a driving member (34) capable of driving the stop member (32) to slide relative to the seat portion (21) and to disengage from the stop member (31) when the seat portion (21) rotates relative to the base (1).

3. The limiting mechanism for limiting the backrest angle of a child seat according to claim 2, characterized in that: The backrest (22) is provided with a groove (221) in which a stopper (32) can move when the backrest (22) rotates, and the stopper (31) is a groove wall of the groove (221).

4. The limiting mechanism for limiting the backrest angle of a child seat according to claim 3, characterized in that: The stopper (32) comprises a stopper block (321) slidably connected to the seat portion (21), and the stopper block (321) is provided with an extension portion (322) extending and snapping into the base (1).

5. The limiting mechanism for limiting the backrest angle of a child seat according to claim 4, characterized in that: The extension portion (322) is a connecting column extending downward, the base (1) is provided with an annular groove (11), the driving portion (34) is a groove wall on the annular groove (11), and the seat portion (21) is further provided with a straight groove (211) for the extension portion (322) to pass through and capable of guiding the extension portion (322) to slide relative to the seat portion (21) when the extension portion (322) is driven by the groove wall of the annular groove; when the seat portion (21) rotates relative to the base (1), the groove wall of the annular groove (11) pushes the connecting column to drive the stopper (32) to slide relative to the seat portion (21).

6. The limiting mechanism for limiting the backrest angle of a child seat according to claim 4, characterized in that: The inner side wall of the groove (221) is in the form of an arc surface, and the stop block (321) is provided with an arc surface (3211) that fits the arc surface.

Images