Angle adjusting mechanism for child automobile safety seat backrest

Abstract

The invention discloses a child automobile safety seat backrest angle adjusting mechanism and relates to the field of child safety seats.The lower arc-shaped ends of two arc-shaped frames are provided with lower guide grooves, the upper arc-shaped ends of the two arc-shaped frames are provided with upper guide grooves, the two arc-shaped frames are fixedly connected to a base, and upper sliding rods are slidably connected into the two upper guide grooves; the upper sliding rod is fixedly connected with the backrest, the lower sliding rod is slidably connected into the two lower guide grooves and fixedly connected with the cushion, and the driving assembly is used for driving the lower sliding rod to slide in the lower guide grooves and driving the upper sliding rod to slide in the upper guide grooves so as to adjust the angle of the backrest. The cushion of the safety seat can slide in the lower guide groove of the arc-shaped frame through the lower sliding rod, and meanwhile, the backrest of the safety seat can slide in the upper guide groove of the arc-shaped frame through the upper sliding rod, so that the angle of the backrest can be adjusted, and the backrest and the cushion are both supported and limited; and the protective effect on children is high.

Description

technical field [0001] The invention relates to the field of child safety seats, in particular to a backrest angle adjustment mechanism of a child car safety seat. Background technique [0002] The safety seat is fixedly installed in the rear of the motor vehicle, which can limit the movement of the child's body to reduce the impact on the child in emergencies such as collisions and sudden brakes, so as to limit the movement of the child's body and reduce the injury to the child. [0003] At present, existing safety seats are mainly divided into two categories. The backrest and seat cushion of one type of safety seat are split, and the backrest can be rotated relative to the seat cushion to adjust the angle of the backrest. Patents such as CN107444333B, but the backrest and the seat cushion are split structures, and there are obvious safety hazards. When a car collision occurs, the rotating shaft between the backrest and the seat cushion is prone to breakage and off-axis, or...

AI Technical Summary

Problems solved by technology

[0003] At present, existing safety seats are mainly divided into two categories. The backrest and seat cushion of one type of safety seat are split, and the backrest can be rotated relative to the seat cushion to adjust the angle of the backrest. Patents such as CN107444333B, but the backrest and the seat cushion are split structures, and there are obvious safety hazards. When a car collision occurs, the rotating shaft between the backrest and the seat cushion is prone to breakage and off-axis, or the rotation angle of the backrest is locked. The situation where the backrest cannot be effectively locked due to damage to the locking parts, resulting in relative movement between the backrest and the seat cushion, causing the backrest to severely squeeze the child

[0004] Another type of safety seat includes a chair body and a base. The seat is installed on the base. The chair body includes a seat cushion and a backrest. The angle of the backrest can be adjusted by rotating the rotating shaft or the rotating seat relative to the base, such as patents such as CN112770934A, but the disadvantage of this type of safety seat is that the chair body is only connected to the base through the rotating shaft or rotating seat. In the event of a car collision accident, the rotating shaft or the rotating seat will easily break and the chair body and children will lose their fixation, which is very dangerous.

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