Child safety seat

• US 8,931,836 B2
• Filed: 09/06/2012
• Issued: 01/13/2015
• 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): Dunn, David R
• Assistant Examiner(s): GIACOMAN, YOLANDA G.
• Application Number:
  US13/604,637
• Publication Number:
  US 20130062919A1
• Time in Patent Office: 859 Days
• Field of Search: 297/216.11, 297/216.12, 297/391, 297/408, 297/409
• US Class Current: 297/216.11
• 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 head portion;

a torso portion;

an insertion slot formed on the torso portion; and

two side protection portions pivotally connected to the head portion oppositely;

a head rest disposed on the seat back and located between the side protection portions, 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, the head rest having an edge portion movably inserted into the insertion slot;

two sliding slot structures formed through the two side protection portions respectively, the sliding slot structure has a first restraining position and a second restraining position; and

two sliding rods 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, each sliding rod having a retaining portion, passing through the corresponding sliding slot structure, and 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 rotates 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 is located at an outer side of the corresponding side protection 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 protection portion so that the two side protection portions rotate relative to the head portion.

2. The child safety seat of claim 1, wherein the seat back comprises an elastic cushion, disposed in the insertion slot and located between the edge portion and a sidewall of the insertion slot, so that when the head of the child impacts the head rest, the edge portion compresses the elastic cushion.

3. The child safety seat of claim 1, wherein the seat back comprises an elastic cushion, the elastic cushion has a groove, and the edge portion is inserted into the groove.

4. The child safety seat of claim 1, wherein the sliding slot structure has a waved structure, and the first restraining position and the second restraining position are located at troughs of the waved structure.

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

a seat back comprising an insertion slot and an elastic cushion, the elastic cushion has a groove;

a head rest disposed on the seat back, 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, the head rest having an edge portion movably inserted into the groove and the insertion slot;

two sliding slot structures formed on the seat back, the sliding slot structure has a first restraining position and a second restraining position; and

two sliding rods 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, 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 rotates relative to the seat back toward the seating orientation, and the sliding rod slides from the first restraining position to the second restraining position, wherein when the head of the child impacts the head rest, the edge portion compresses the elastic cushion against a sidewall of the insertion slot.

6. The child safety seat of claim 5, wherein the elastic cushion is disposed in the insertion slot and located between the edge portion and the sidewall of the insertion slot.

7. The child safety seat of claim 5, wherein the elastic cushion has a groove and the edge portion is inserted into the groove.

8. The child safety seat of claim 5, wherein the seat back comprises a head portion, a torso portion, and two side protection portions pivotally connected to the head portion oppositely, the insertion slot is formed on the torso portion, the two sliding slot structure are formed through the two side protection portions respectively, and the head rest is located between the side protection portions.

9. The child safety seat of claim 8, wherein the sliding rod has a retaining portion, the sliding rod passes through the corresponding sliding slot structure, and the retaining portion is located at an outer side of the corresponding side protection 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 protection portion so that the two side protection portions rotate relative to the head portion.

10. The child safety seat of claim 5, wherein the sliding slot structure has a waved structure, and the first restraining position and the second restraining position are located at troughs of the waved structure.