US 12,459,407 B2
Child car seat and seat back assembly thereof
Hongbo Chen, Steinhausen (CH)
Assigned to Bambino Prezioso Switzerland AG, Steinhausen (CH)
Appl. No. 18/028,405
Filed by BAMBINO PREZIOSO SWITZERLAND AG, Steinhausen (CH)
PCT Filed Sep. 30, 2021, PCT No. PCT/EP2021/077006
§ 371(c)(1), (2) Date Mar. 24, 2023,
PCT Pub. No. WO2022/069667, PCT Pub. Date Apr. 7, 2022.
Claims priority of application No. 202011073701.X (CN), filed on Sep. 30, 2020.
Prior Publication US 2023/0365034 A1, Nov. 16, 2023
Int. Cl. B60N 2/28 (2006.01)
CPC B60N 2/2872 (2013.01) [B60N 2/2851 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A seat back assembly, comprising:
a backrest;
a headrest slidably installed at an upper end of the backrest;
a side wing disposed on a side of the backrest and capable of folding and unfolding relative to the backrest, the side wing comprising a stop block provided on a back portion of the side wing;
an elastic member comprising an end connected to the stop block;
a driving member disposed on the backrest or the headrest and moving along with the headrest relative to the backrest,
a guide post disposed on a back portion of the backrest, wherein the driving member is slidably sleeved on the guide post;
wherein the headrest at least, relative to the backrest, has an initial position close to the backrest and an operation position driving the side wing to unfold relative to the backrest, the side wing is folded on the backrest when the headrest slides to a position between the initial position and the operation position, and the driving member drives the side wing to unfold relative to the backrest when the headrest slides in a direction away from the backrest and passes beyond the operation position.