CHILD SAFETY SEAT

Abstract

The present invention provides a child safety seat. The pitching angle adjustment of the child safety seat is achieved through the angle adjustment mechanism. The connecting rod is connected to the driving mechanism, and the shaft sleeve sleeving the connecting rod is driven by the motor. The gears are mounted at the two ends of the shaft sleeve, and the gears are driven by the shaft sleeve to move on the rack. The rack is mounted on the base plate, so that the seat body can adjust the angle on the base plate. The connecting rod and the seat frame form the fixed supporting structure, so that the stability of angle adjustment is better. By the arrangement of the protective device on the seat portion, the probability of accidentally injuring a child during the turning of the seat body is reduced, and the safety of use is improved.

Claims

1. A child safety seat, comprising a seat body, wherein the seat body is provided with an angle adjustment device; the angle adjustment device is configured to electrically adjust a pitching angle of the seat body; the seat body comprises a seat back portion and a seat portion; the angle adjustment device is arranged on the seat portion; the angle adjustment device comprises a base plate; the base plate is adapted to the seat portion; the base plate is configured to support the seat body; the angle adjustment device further comprises a driving mechanism; the driving mechanism is configured to drive the seat body to move on the base plate; the seat portion is provided with a protective device; the protective device is configured to prevent the legs from being pinched; the protective device comprises a sensor and a controller; and when the sensor senses that the seat body rotates to pinch the legs, the controller is triggered to control the angle adjustment device to stop and/or move back.

2. The child safety seat according to claim 1, wherein a connecting plate is arranged on the base plate; the connecting plate passes through the seat body; the base plate is connected to the seat body through the connecting plate; the seat body is slidably connected to the base plate through the connecting plate; the seat body is provided with a seat frame; the seat frame comprises a connecting rod; the connecting rod is slidably connected to the connecting plate; and the driving mechanism drives the seat body through the seat frame.

3. The child safety seat according to claim 2, wherein a limiting slot is provided on the connecting plate; the driving mechanism comprises a motor; the connecting rod slides in the limiting slot through the motor; a shaft sleeve is mounted on the connecting rod; gears are arranged at two ends of the shaft sleeve; an output end of the motor is connected to the gears; the base plate is provided with a rack that is matched with the gears; the shaft sleeve is connected to the motor; and the motor drives the shaft sleeve to enable the gears to move on the rack.

4. The child safety seat according to claim 3, wherein positioning slots provided at end portions of the shaft sleeve; protrusions are arranged on inner walls of the gears; the protrusions cooperate with the positioning slots to limit the gears at two ends of the shaft sleeve; a speed reduction mechanism is arranged between the shaft sleeve and the motor; the speed reduction mechanism is configured to increase a torque; a motor box is further mounted on the shaft sleeve; the motor box is configured to mount the motor and the speed reduction mechanism; a through hole is provided on the motor box; the through hole is adapted to the shaft sleeve; and the through hole is configured to sleeve the motor box on the shaft sleeve.

5. The child safety seat according to claim 1, wherein the seat body is further provided with a sensing device; the sensing device is configured to sense an empty state of the seat body; and when the sensing device senses that the seat body is not empty, the protective device is activated.

6. The child safety seat according to claim 5, wherein the protective device is arranged at a leg placement end of the seat body; and the protective device is triggered by sensing a change in pressure on the leg placement end.

7. The child safety seat according to claim 5, wherein the protective device is connected to the driving mechanism; and the protective device is triggered by sensing a change in current of the driving mechanism.

8. A child safety seat, comprising a seat body, wherein the seat body is provided with an angle adjustment device; the angle adjustment device is configured to electrically adjust a pitching angle of the seat body; the seat body comprises a seat back portion and a seat portion; the angle adjustment device is arranged at the seat portion; the angle adjustment device comprises a base plate, a driving mechanism, and gears; the base plate is adapted to the seat portion; the base plate is configured to support the seat body; the base plate is provided with a connecting plate; the seat portion is slidably connected to the base plate through the connecting plate; the seat portion is provided with a seat frame; the seat frame comprises a connecting rod; the connecting rod is fixedly connected to the seat frame; the connecting plate is provided with a limiting slot; the connecting rod slidably cooperates with the limiting slot; the gears are rotationally connected to the connecting rod; the driving mechanism is in driving connection to the gears; the base plate is provided with a rack that cooperates with the gears; and the driving mechanism drives the gears to enable the seat body to slide.

9. The child safety seat according to claim 8, wherein the driving mechanism comprises a motor; the driving mechanism drives the seat body to move on the base plate through the motor; a shaft sleeve is mounted on the connecting rod; the gears are arranged at two ends of the shaft sleeve; and the shaft sleeve is connected to the motor.

10. The child safety seat according to claim 9, wherein a positioning slots are provided at end portions of the shaft sleeve; protrusions are arranged on inner walls of the gears; the protrusions cooperate with the positioning slots to limit the gears at two ends of the shaft sleeve; a speed reduction mechanism is arranged between the shaft sleeve and the motor; the speed reduction mechanism is configured to increase a torque; a motor box is further mounted on the shaft sleeve; the motor box is configured to mount the motor and the speed reduction mechanism; a through hole is provided on the motor box; the through hole is adapted to the shaft sleeve; and the through hole is configured to sleeve the motor box on the shaft sleeve.

Description

BRIEF DESCRIPTION OF DRAWINGS

[0030] The present disclosure is further described below in detail in combination with the accompanying drawings and embodiments. These drawings are not necessarily drawn to scale. It should be understood that these drawings only describe some implementation modes of the present disclosure, and should not be regarded as limiting the scope of the present disclosure.

[0031] FIG. 1 is an exploded diagram of a child safety seat according to the present disclosure;

[0032] FIG. 2 is a schematic structural diagram of a base plate in the present disclosure;

[0033] FIG. 3 is a partially structural diagram of a driving mechanism in the present disclosure;

[0034] FIG. 4 is a partially structural diagram of Embodiment 2 in the present disclosure;

[0035] FIG. 5 is a schematic structural diagram of a toothed ring in the present disclosure;

[0036] FIG. 6 is a schematic structural diagram of a child safety seat according to the present disclosure; and

[0037] FIG. 7 is a schematic structural diagram of a seat body in the present disclosure.

DETAILED DESCRIPTION OF THE INVENTION

[0038] The present disclosure will be explained in detail below in conjunction with the accompanying drawings 1 to 7.

[0039] In order to make the aims, technical solution and advantages of the present disclosure will be clearly, the present disclosure is further described below in combination with accompanying drawings and implementations. It should be understood that the specific embodiments described herein are intended only to explain the present disclosure and are not intended to define the present disclosure.

Embodiment 1

[0040] As shown in FIG. 1, this embodiment provides a child safety seat, specifically including a seat body 1 and a base 2; the seat body 1 is mounted on the base 2; the base 2 is configured to fix the child safety seat in a vehicle; the seat body 1 includes a seat back portion 3 and a seat portion 4; the seat portion 4 is provided with an angle adjustment device; the angle adjustment device includes a base plate 5 and a driving mechanism; the base plate 5 is disc-shaped; the base plate 5 and a bottom of the seat portion 4 are adapted to support the seat body 1; the center of gravity of the seat body 1 falls onto the base plate 5; the disc-shaped base plate 5 is mounted between the seat body 1 and the base 2; the seat body 1 can automatically adjust a pitching angle on the base plate 5 through the driving mechanism; the entire angle adjustment device is arranged at the seat portion 4 and is closer to the center of gravity of the seat body 1, so that the seat body 1 has good stability of rotation.

[0041] Further, two connecting plates 6 are symmetrically arranged on the base plate 5. The connecting plates 6 are basically arc-shaped, which are adapted to the shape of the seat body 1. The connecting plates 6 pass through the seat portion 4 of the seat body 1; the base plate 5 is slidably connected to the seat portion 4 through the connecting plates 6; limiting slots 7 are provided on the connecting plates 6 to limit an adjustment range of the pitching angle of the seat body 1; the seat body 1 is provided with a seat frame 9; the seat frame 9 is connected with a seat back portion 3; the seat frame 9 includes a connecting rod 8; the connecting rod 8 is slidably connected to the connecting plates 6; the driving mechanism includes a motor; two ends of the connecting rod 8 are respectively arranged in the limiting slots 7 of the two connecting plates 6 in a penetrating manner; the limiting slots 7 are waist-shaped slots; the connecting rod 8 is connected to the driving mechanism; and the connecting rod 8 slide in the limiting slots 7 through the motor, thereby driving the seat body 1 to adjust the pitching angle.

[0042] Still further, a shaft sleeve 12 sleeves the connecting rod 8; the shaft sleeve 12 is provided with an inner hole to mount the connecting rod 8; the shape of the inner hole is matched with the shape of the connecting rod 8; gears 10 are respectively mounted at two ends of the shaft sleeve 12; the shaft sleeve 12 is connected to the motor; the motor drives the gears 10 to move on the rack 11 by driving the shaft sleeve 12; a length of the shaft sleeve 12 is less than a length of the connecting rod 8; the connecting rod 8 can be fixedly connected to the seat frame 9 to form a stable supporting structure; and the entire motion mechanism is located between the connecting plates 6, so that the entire driving structure is arranged in the middle of the seat portion 4, and the stability is good.

[0043] Still further, as shown in FIG. 4, positioning slots 13 are provided at an end portions of the shaft sleeve 12; protrusions 14 are arranged on inner walls of the gears 10; the protrusions 14 cooperate with the positioning slots 13 to limit the gears 10 at the two ends of the shaft sleeve 12; the positioning slots 13 are long strips with openings in end portions, so that the gears 10 are aligned with the positioning slots 13 through the protrusions 14 for quick mounting; and the protrusions 14 and the positioning slots 13 can prevent slippage between the gears 10 and the shaft sleeve 12 to affect the rotation efficiency. A motor box 15 is further mounted on the shaft sleeve 12; the motor box 15 is configured to place the motor; a through hole is provided on the motor box 15; the motor box 15 sleeves the shaft sleeve 12 through the through hole, so that the motor is mounted at the seat portion 4; and during mounting, the volume of the seat body 1 will not increase. A speed reduction mechanism 16 is arranged between the motor and the shaft sleeve 12 to increase a torque. In this embodiment, the speed reduction mechanism 16 provided is formed by meshing the two conical gears 10. One conical gear 10 is connected to an output shaft of the motor, and the other conical gear 10 sleeves the shaft sleeve 12. The protrusions 14 are arranged on the inner walls of the conical gears 10 sleeving the shaft sleeve 12 and are mounted in the positioning slots 13 of the shaft sleeve 12. The torque is increased through the speed reduction mechanism 16, so that the low-power motor can also drive the seat body 1 to move. This saves the cost, reduces the size of the motor, and saves the mounting space.

[0044] In another aspect, in this embodiment, the shaft sleeve 12 can be basically circular. The circular shaft sleeve 12 needs to fix the gears 10 through the positioning slots 13. The shaft sleeve 12 can be square, rectangular, and in another polygonal shape. The polygonal shaft sleeve 12 does not need to be provided with the positioning slots 13. The positioning and anti-slippage purpose can be achieved by changing sleeving holes of the gears 10 to be matched with the basic shape of the shaft sleeve 12. The shaft sleeve is convenient to mount and use.

Embodiment 2

[0045] As shown in FIG. 1 to FIG. 5, this embodiment provides a child safety seat, including a seat body 1 and a base 2; the seat body 1 is mounted on the base 2; the base 2 is configured to fix the child safety seat in a vehicle; the seat body 1 includes a seat back portion 3 and a seat portion 4; the seat portion 4 is provided with an angle adjustment device; the angle adjustment device includes a base plate 5 and a driving mechanism; the base plate 5 is disc-shaped; the base plate 5 and a bottom of the seat portion 4 are adapted to support the seat body 1; the center of gravity of the seat body 1 falls onto the base plate 5; the disc-shaped base plate 5 is mounted between the seat body 1 and the base 2; the seat body 1 can automatically adjust a pitching angle on the base plate 5 through the driving mechanism; the entire angle adjustment device is arranged at the seat portion 4 and is closer to the center of gravity of the seat body 1, so that the seat body 1 has good stability of rotation.

[0046] The seat body 1 is provided with a protective device 18. The angle adjustment device is configured to electrically adjust a pitching angle of the seat body 1. The protective device 18 is configured to prevent the legs from being pinched. During use of the angle adjustment device, the protective device 18 includes a sensor and a controller. When the sensor senses that the seat body rotates to pinch the legs, the controller is triggered to control the angle adjustment device to stop rotating or to rotate to its original angle. It prevents the seat body 1 from accidentally injure the limbs of a child during turning.

[0047] Two connecting plates 6 are symmetrically arranged on the base plate 5. The connecting plates 6 are basically arc-shaped, which are adapted to the shape of the seat body 1. The connecting plates 6 pass through the seat portion 4 of the seat body 1; the base plate 5 is slidably connected to the seat body 1 through the connecting plates 6; limiting slots 7 are provided on the connecting plates 6 to limit an adjustment range of the pitching angle of the seat body 1; the seat body 1 is provided with a seat frame 9; the seat frame 9 includes a connecting rod 8; the connecting rod 8 is slidably connected to the connecting plates 6; the driving mechanism includes a motor; two ends of the connecting rod 8 are respectively arranged in the limiting slots 7 of the two connecting plates 6 in a penetrating manner; and the limiting slots 7 are waist-shaped slots. The connecting rod 8 is connected to the driving mechanism; and the connecting rod 8 slide in the limiting slots 7 through the motor, thereby driving the seat body 1 to adjust the pitching angle. A shaft sleeve 12 sleeves the connecting rod 8; the shaft sleeve 12 is provided with an inner hole to mount the connecting rod 8; the shape of the inner hole is matched with the shape of the connecting rod 8; gears 10 are respectively mounted at two ends of the shaft sleeve 12; the shaft sleeve 12 is connected to the motor; the motor drives the gears 10 to move on the rack 11 by driving the shaft sleeve 12; a length of the shaft sleeve 12 is less than a length of the connecting rod 8; the connecting rod 8 can be fixedly connected to the seat frame 9 to form a stable supporting structure; and the entire motion mechanism is located between the connecting plates 6, so that the entire driving structure is arranged in the middle of the seat portion 4, and the stability is good. As shown in FIG. 4, positioning slots 13 are provided at an end portions of the shaft sleeve 12; protrusions 14 are arranged on inner walls of the gears 10; the protrusions 14 cooperate with the positioning slots 13 to limit the gears 10 at the two ends of the shaft sleeve 12; the positioning slots 13 are long strips with openings in end portions, so that the gears 10 are aligned with the positioning slots 13 through the protrusions 14 for quick mounting; and the protrusions 14 and the positioning slots 13 can prevent slippage between the gears 10 and the shaft sleeve 12 to affect the rotation efficiency. A motor box 15 is further mounted on the shaft sleeve 12; the motor box 15 is configured to place the motor; a through hole is provided on the motor box 15; the motor box 15 sleeves the shaft sleeve 12 through the through hole, so that the motor is mounted at the seat portion 4; and during mounting, the volume of the seat body 1 will not increase. A speed reduction mechanism 16 is arranged between the motor and the shaft sleeve 12 to increase a torque. In this embodiment, the speed reduction mechanism 16 provided is formed by meshing the two conical gears 10. One conical gear 10 is connected to an output shaft of the motor, and the other conical gear 10 sleeves the shaft sleeve 12. The protrusions 14 are arranged on the inner walls of the conical gears 10 sleeving the shaft sleeve 12 and are mounted in the positioning slots 13 of the shaft sleeve 12. The torque is increased through the speed reduction mechanism 16, so that the low-power motor can also drive the seat body 1 to move. This saves the cost, reduces the size of the motor, and saves the mounting space.

[0048] In another aspect, in this embodiment, the shaft sleeve 12 can be basically circular. The circular shaft sleeve 12 needs to fix the gears 10 through the positioning slots 13. The shaft sleeve 12 can be square, rectangular, and in another polygonal shape. The polygonal shaft sleeve 12 does not need to be provided with the positioning slots 13. The positioning and anti-slippage purpose can be achieved by changing sleeving holes of the gears 10 to be matched with the basic shape of the shaft sleeve 12. The shaft sleeve is convenient to mount and use.

Embodiment 3

[0049] As shown in FIG. 6 and FIG. 7, this embodiment provides a child safety seat based on Embodiment 2. The seat body 1 is provided with a sensing device 17. The sensing device 17 is configured to sense an empty state of the seat body 1. The sensing device 17 is a pressure sensor. The pressure sensor is mounted at the seat portion 4. Whether there is a child in the seat body 1 by sensing a change in pressure on the seat portion 4.

[0050] Further, in this embodiment, the protective device 18 is a pressure sensor. One end of the seat body 1 is a headrest portion, and the other end is the leg placement end 19 for placing the legs. The turning protective device 18 is arranged at the leg placement end 19 of the seat body 1. During the turning of the seat body 1, when the legs of a child approach or move away from the leg placement end 19, the leg placement end 19 senses a pressure change. Especially during the adjustment of the pitching angle, a larger elevation angle indicates that the legs are closer to the leg placement end 19 and the pressure sensed by the leg placement end 19 is higher. Moreover, if the legs are closer to a front adult seat, and the seat body 1 continues to turn, the legs are easily pinched. The protective device 18 is arranged at the leg placement end 19. When sensing that the pressure reaches the set value, the protective device is triggered to control the seat body 1 to stop turning. Two pressure sensors are arranged at the leg placement end 19 at an interval, which enlarges a sensing area and improves the sensing precision.

[0051] And/or, this embodiment can further provide a protective device 18 which is a current sensor. During turning of the seat body 1, the center of gravity and the force on the seat body continuously change, and the force exerted by the driving mechanism of the angle adjustment device to the seat body 1 also continuously changes, so that the protective mechanism determines, through a current change of the driving mechanism, whether it is safe if the seat body 1 continues to turn. When the change in the current reaches a set value, the protective device 18 is triggered to control the seat body 1 to no longer turn, which ensures the safety of a child sitting in the safety seat.

[0052] The present disclosure provides a child safety seat. The pitching angle adjustment of the child safety seat is achieved through the angle adjustment mechanism. The connecting rod 8 is connected to the seat frame 9, and the shaft sleeve 12 sleeving the connecting rod 8 is driven by the motor. The gears 10 are mounted at the two ends of the shaft sleeve 12, and the gears 10 are driven by the shaft sleeve 12 to move on the rack 11. The rack 11 is mounted on the base plate 5, so that the seat body 1 can adjust the angle on the base plate 5. The connecting rod 8 and the seat frame 9 form the fixed supporting structure, so that the stability of angle adjustment is better. By the arrangement of the protective device 18 on the seat portion, the probability of accidentally injuring a child during the turning of the seat body 1 is reduced, and the safety of use is improved. By the arrangement of the sensing device 17 configured to activate the protective device 18 after detecting that the seat body 1 is not empty, the energy waste caused by empty seat protection is prevented. The child safety seat provided in the present disclosure has the advantages of compact structure, good supportability, and high safety of use.

[0053] The terms used in part of the implementations of the present disclosure are only used for explaining the specific embodiments of the present disclosure, but are not intended to limit the present disclosure. The implementation modes of the present disclosure are described above only. It should be noted that those of ordinary skill in the art can further make improvements without departing from the concept of the present disclosure. These improvements shall all fall within the protection scope of the present disclosure.