Child safety seat and side impact protection mechanism thereof

Patent metadata

Field	Value
Publication number	US-11865953-B2
Application number	US-202117513215-A
Country	US
Kind code	B2
Filing date	Oct 28, 2021
Priority date	Oct 28, 2020
Publication date	Jan 9, 2024
Grant date	Jan 9, 2024

Abstract

The present disclosure discloses a child safety seat and a side impact protection mechanism thereof, the side impact protection mechanism is provided at a backrest of the child safety seat and includes a side impact protection block and a self-locking structure. The side impact protection block is movably fitted to the backrest and has a folding position in which the side impact protection block is inwardly folded in the backrest and an unfolding position in which the side impact protection block is outwardly unfolded from the backrest. The self-locking structure automatically moves to a position that blocks the side impact protection block in the unfolding position from switching to the folding position when the side impact protection block is switched from the folding position to the unfolding position, the self-locking structure is fitted to the side impact protection block or the backrest, and the backrest and the side impact protection block shields the self-locking structure to block a release operation of the self-locking structure by an operator, so that the side impact protection block cannot be inwardly folded into the backrest after the first use, thereby effectively preventing the side impact protection block from being accidentally folded during the side impact to provide a side impact protection effect.

First claim

What is claimed is:

1. A side impact protection mechanism provided at a backrest of a child safety seat and comprising a side impact protection block movably fitted to the backrest and having a folding position in which the side impact protection block is inwardly folded in the backrest and an unfolding position in which the side impact protection block is outwardly unfolded from the backrest, wherein the side impact protection mechanism further comprises a self-locking structure fitted to the side impact protection block or the backrest, the self-locking structure automatically moves to a position where the self-locking structure blocks the side impact protection block in the unfolding position from switching to the folding position when the side impact protection block is switched from the folding position to the unfolding position, and the backrest and the side impact protection block shields the self-locking structure to block a release operation of the self-locking structure by an operator;
wherein the self-locking structure comprises a self-locking member fitted to the backrest or the side impact protection block and being telescopically slidable, and a self-locking reset member providing a reset force for a telescopically slidable movement of the self-locking member, the self-locking reset member has a constant tendency to drive the self-locking member to slide in an extending direction to a position that blocks the side impact protection block in the unfolding position from switching to the folding position;
wherein the side impact protection block comprises a side impact protection block body pivoted to the backrest and a blocking member slidable to a blocking position or an avoidance position on the side impact protection block body, the blocking member projects out of the side impact protection block body to be in a blocking position that blocks against the backrest in a folding direction when the side impact protection block switches to the unfolding position, meanwhile the self-locking member slides to a position that blocks the side impact protection block in the unfolding position from switching to the folding position under an action of the self-locking reset member, the blocking member is retracted into the side impact protection block body to be in the avoidance position that is free from blocking against the backrest in the folding direction when the side impact protection block is in the folding position, and the self-locking member is pushed by the backrest to be in a retracted state in which the self-locking reset member is elastically deformed.

2. The side impact protection mechanism of claim 1 , wherein the self-locking reset member is an elastic member provided between the self-locking member and the side impact protection block or the backrest on which the self-locking member is located.

3. The side impact protection mechanism of claim 2 , wherein the side impact protection block is pivoted to the backrest.

4. A side impact protection mechanism provided at a backrest of a child safety seat and comprising a side impact protection block movably fitted to the backrest and having a folding position in which the side impact protection block is inwardly folded in the backrest and an unfolding position in which the side impact protection block is outwardly unfolded from the backrest;
wherein the side impact protection mechanism further comprises a self-locking structure fitted to the side impact protection block or the backrest, the self-locking structure automatically moves to a position where the self-locking structure blocks the side impact protection block in the unfolding position from switching to the folding position when the side impact protection block is switched from the folding position to the unfolding position, and the backrest and the side impact protection block shields the self-locking structure to block a release operation of the self-locking structure by an operator;
wherein the self-locking structure comprises a self-locking member fitted to the backrest or the side impact protection block and being telescopically slidable, and a self-locking reset member providing a reset force for a telescopically slidable movement of the self-locking member, the self-locking reset member has a constant tendency to drive the self-locking member to slide in an extending direction to a position that blocks the side impact protection block in the unfolding position from switching to the folding position;
wherein the self-locking member is positioned in the backrest, the self-locking member is pushed by the side-impact protection block to be in a retracted state in which the self-locking reset member is elastically deformed when the side impact protection block is positioned in the folding position, and the self-locking member is free from being pushed by the side impact protection block and slides to a position that blocks the side impact protection block in the unfolding position from switching to the folding position when the side impact protection block is positioned in the unfolding position;
wherein the backrest is provided with a metal sheet, the self-locking member inserts through the metal sheet, and the self-locking reset member is provided between the self-locking member and the metal sheet.

5. The side impact protection mechanism of claim 1 , wherein the self-locking member is fitted to the blocking member, and a telescopically slidable direction of the self-locking member intersects a sliding direction of the blocking member.

6. The side impact protection mechanism of claim 1 , wherein the side impact protection block further comprises a blocking reset member that has a constant tendency to drive the blocking member to slide to the blocking position.

7. The side impact protection mechanism of claim 6 , wherein the blocking reset member is an elastic member provided between the blocking member and the side impact protection block body.

8. The side impact protection mechanism of claim 1 , wherein an end of the blocking member positioned in front in an outwardly sliding direction has an inclined surface inclined with respect to the sliding direction of the blocking member, and the inclined surface of the blocking member is positioned in front of the blocking member in the pivotally unfolding direction of the side impact protection block.

9. The side impact protection mechanism of claim 1 , wherein the blocking member is a blocking block that exposes from the backrest when the side impact protection block is positioned in the unfolding position.

10. The side impact protection mechanism of claim 1 , wherein the self-locking member is a pin member or a block member.

11. A side impact protection mechanism provided at a backrest of a child safety seat, the side impact protection mechanism comprising:
a side impact protection block movably fitted to the backrest and having a folding position in which the side impact protection block is inwardly folded in the backrest and an unfolding position in which the side impact protection block is outwardly unfolded from the backrest;
a self-locking structure fitted to the side impact protection block or the backrest;
wherein the self-locking structure is configured to move to a position that blocks the side impact protection block in the unfolding position from switching to the folding position when the side impact protection block is switched from the folding position to the unfolding position;
wherein the backrest and the side impact protection block shields the self-locking structure to block a release operation of the self-locking structure by an operator;
wherein the self-locking structure comprises a self-locking member fitted to the back

Assignees

• Bambino Prezioso Switzerland Ag

Inventors

• Zhang Daliang
• Chen Hongbo

Classifications

• B60N2/2872 Primary

  provided with side rests · CPC title

• B60N2/286

  forward facing (B60N2/2866 takes precedence) · CPC title

• B60N2/2821 Primary

  having a seat and a base part · CPC title

• B60N2/2884

  with protection systems against abnormal g-forces · CPC title

• B60N2/919

  Positioning and locking mechanisms (B60N2/16, B60N2/18, B60N2/22, B60N2/225 take precedence) · CPC title