Child safety seat

• US 9,511,697 B2
• Filed: 07/03/2014
• Issued: 12/06/2016
• Est. Priority Date: 09/08/2011
• Status: Active Grant

• Current Assignee: Wonderland Switzerland AG
• Original Assignee: Wonderland Nurserygoods Company Limited
• Inventors: Cheng, Chin-Ming, Su, Yu-Ya
• Primary Examiner(s): Allred, David E
• Application Number:
  US14/322,910
• Publication Number:
  US 20140312666A1
• Time in Patent Office: 887 Days
• Field of Search: 297/216.11, 297/216.12, 297/216.13, 297/284.9
• US Class Current: 1/1
• CPC Class Codes: B60N 2/2851 provided with head-rests
• CPC Class Codes: B60N 2/888 with arrangements for protecting against abnormal g-forces, e.g. by displacement of the head-rest

Abstract

A child safety seat includes a seat back and a head rest disposed on the seat back. When a child sits on the child safety seat, his back is against the seat back, and his head is against the head rest. The child safety seat also includes two sliding slot structures, formed on the seat back, and two sliding rods. The two sliding rod are connected to two opposite sides of the head rest corresponding to the two sliding slot structures and slidably disposed in the corresponding sliding slot structures. When the sliding rod is at a first restraining position of the sliding slot structure and the child safety seat shakes because of an impact, the head rest moves relative to the seat back, so that the sliding rod slides to a second restraining position sliding slot structure, which reduces possible harm to the head of the child.

Claims

1. A child safety seat, having a seating orientation, the child safety seat comprising:

a seat back comprising a main portion and two side wing portions extending from two opposite sides of the main portion;

a head rest disposed on the seat back and located between the side wing portions and against the main portion, when a child is seated on the child safety seat, a back of the child being against the seat back, a head of the child being against the head rest and facing toward the seating orientation;

two sliding slot structures formed on the two side wing portions respectively, each sliding slot structure having a first restraining position and a second restraining position, and each sliding slot structure comprising a horizontal slot section, a vertical slot section connected to the horizontal slot section, and a retaining portion protruding inward at a place where the horizontal slot section and the vertical slot section are connected to each other so a width of the sliding slot structure at the retaining portion is less than a width of the sliding slot structure at the vertical slot section, wherein the vertical slot section is longer in a vertical direction than the horizontal slot section is in a horizontal direction the first restraining position being located at an end of the horizontal slot section, and the second restraining position being located at an end of the vertical slot section; and

two sliding rods connected to two opposite sides of the head rest corresponding to the two sliding slot structures and slidably disposed in corresponding sliding slot structures, the sliding rod being capable of being located at the first restraining position or the second restraining position, wherein when the sliding rod is located at the first restraining position and the child safety seat shakes because of an impact, the head rest moves relative to the seat back toward the seating orientation, so that the sliding rod slides from the first restraining position to the second restraining position, and the retaining portion constrains the sliding rod to be located at the first restraining position, and when the sliding rod slides from the horizontal slot section toward the vertical slot section, the retaining portion pushes against the sliding rod.

2. The child safety seat of claim 1, wherein the head rest comprises a rest portion and two side protection portions extending from two opposite sides of the rest portion toward the seating orientation, and the side protection portions are located between the side wing portions.

3. The child safety seat of claim 1, wherein the two side wing portions are pivotally connected to the two opposite sides of the main portion, the sliding rod has a retaining portion, the sliding rod passes through the corresponding sliding slot structure, and the retaining portion is located at a side of a corresponding side wing portion opposite to the head rest, so that when the sliding rod slides from the first restraining position to the second restraining position, the retaining portion pushes the corresponding side wing portion so that the two side wing portions rotate relative to the main portion to approach to each other.