Child safety seat

• US 8,141,951 B2
• Filed: 09/09/2009
• Issued: 03/27/2012
• Est. Priority Date: 09/10/2008
• Status: Active Grant

• Current Assignee: Wonderland Switzerland AG
• Original Assignee: Excellarate Enterprise Company Limited
• Inventors: Chen, Ying-Zhong
• Primary Examiner(s): BARFIELD, ANTHONY DERRELL
• Application Number:
  US12/555,814
• Publication Number:
  US 20100060055A1
• Time in Patent Office: 930 Days
• Field of Search: 297/256.11, 297/256.13, 297/353
• US Class Current: 297/256.11
• CPC Class Codes: B60N 2/2821 having a seat and a base part
• CPC Class Codes: B60N 2/2866 booster cushions, e.g. to lift a child to allow proper use of the conventional safety belts
• CPC Class Codes: B60N 2/2875 inclinable, as a whole or partially

Abstract

A child safety seat includes a seat body, an engaging board, a backrest, and an engaging mechanism. The engaging board is connected to the seat body. A tooth-shaped structure is formed on the engaging board. The backrest is movably disposed on the engaging board. The engaging mechanism is disposed between the engaging board and the backrest. The engaging mechanism includes an engaging member and a driving device. The engaging member is pivotally connected to the backrest for engaging with the tooth-shaped structure. The driving device is pivotally connected to the engaging member and movably connected to the backrest. When the driving device moves between a locking position and a releasing position relative to the backrest, the driving device drives the engaging member to rotate relative to the backrest.

Claims

1. A child safety seat comprising:

a seat body;

an engaging board connected to the seat body, a tooth-shaped structure being formed on the engaging board;

a backrest movably disposed on the engaging board; and

an engaging mechanism disposed between the engaging board and the backrest, the engaging mechanism comprising;

an engaging member pivotally connected to the backrest for engaging with the tooth-shaped structure; and

a driving device movably connected to the backrest, the driving device comprising;

a connecting member pivotally connected to a first end of the engaging member; and

a pulling member connected to the connecting member, for driving the first end of the engaging member to rotate relative to the backrest when the driving device moves to a releasing position, so as to disengage a second end of the engaging member from the tooth-shaped structure, and further for driving the first end of the engaging member to rotate relative to the backrest when the driving device moves to a locking position, so as to engage the second end of the engaging member with a positioning groove of the tooth-shaped structure, such that a height of the backrest relative to the engaging board is fixed;

wherein the backrest is capable of moving relative to the engaging board when the second end of the engaging member is disengaged from the tooth-shaped structure.

2. The child safety seat of claim 1, wherein the second end of the engaging member has an inclined surface.

3. The child safety seat of claim 1, wherein the pulling member comprises a pillar disposed in a restraining hole of the backrest.

4. The child safety seat of claim 1, wherein the driving device further comprises a spring connected between the engaging member and a protruding portion of the backrest.

5. The child safety seat of claim 1, wherein the pulling member is a handle.

6. The child safety seat of claim 1, wherein the backrest comprises a headrest portion and a body portion, the headrest portion and the body portion are formed integrally and movable synchronously disposed on the engaging board.

7. The child safety seat of claim 1, wherein an accommodating space is formed on the backrest and used for accommodating the connecting member.

8. The child safety seat of claim 1, further comprising a backrest cover, disposed on one side of the engaging board, for covering the engaging board and the engaging mechanism.

9. The child safety seat of claim 8, further comprising a protecting pad disposed on the backrest cover.

10. The child safety seat of claim 9, wherein the protecting pad is made of expandable polystyrene (EPS).

11. The child safety seat of claim 1, further comprising a protruding shaft extending outwardly from one side of the engaging board, wherein the engaging board is pivotally connected to the seat body by the protruding shaft.

12. The child safety seat of claim 11, further comprising a resilient member disposed between the protruding shaft and the engaging board.

13. The child safety seat of claim 11, wherein the protruding shaft is capable of moving relative to the engaging board.