Child safety seat and side impact protection device thereof

Patent metadata

Field	Value
Publication number	US-12157404-B2
Application number	US-202117483892-A
Country	US
Kind code	B2
Filing date	Sep 24, 2021
Priority date	Sep 25, 2020
Publication date	Dec 3, 2024
Grant date	Dec 3, 2024

Abstract

A child safety seat and a side impact protection device. The side impact protection device comprises a fixed seat assembled on the backrest and a side impact protection block pivotally coupled to the fixed seat via a pivot shaft. The side impact protection block has at least an extended position and a retracted position during a pivoting process around an axis of the pivot shaft in respect to the fixed seat, one of the fixed seat and the side impact protection block has a locking structure, and the other one of the fixed seat and the side impact protection block has a cooperative locking structure being cooperating with the locking structure, the locking structure is automatically locked with the cooperative locking structure when the side impact protection block is pivoted to the extended position around the axis. The side impact protection device is simple in structure and easy in operation.

First claim

What is claimed is:

1. A child safety seat comprising:
a seating body, having a backrest; and
a side impact protection device, disposed at the backrest, the side impact protection device comprising:
a fixed seat assembled on the backrest; and
a side impact protection block pivotally coupled to the fixed seat via a pivot shaft, the side impact protection block has at least an extended position and a retracted position during a pivoting process around an axis of the pivot shaft in respect to the fixed seat;
wherein one of the fixed seat and the side impact protection block has a locking structure, and the other one of the fixed seat and the side impact protection block has at least two cooperative locking structures that cooperate with the locking structure, the at least two cooperative locking structures are spaced apart from each other along a circumferential direction of the pivot shaft; and
wherein the locking structure is automatically locked with one of the cooperative locking structures when the side impact protection block is pivoted to the extended position around the axis, and the locking structure is automatically locked with the other one of the cooperative locking structures when the side impact protection block is pivoted to the retracted position,
wherein the fixed seat has an accommodating groove matching the side impact protection block, the side impact protection block has a pivotal assembling end located in the accommodating groove and a free end connected to the pivotal assembling end, the pivot shaft is located at the pivotal assembling end, the free end is embedded into the accommodating groove when pivoting to the retracted position around the axis, and the free end is rotated out of the accommodating groove when pivoting to the extended position around the axis,
wherein one of the pivotal assembling end and the fixed seat has an embedding bulge, and the other one of the pivotal assembling end and the fixed seat has an embedding groove being cooperating with the embedding bulge, the embedding bulge is located in the accommodating groove if the fixed seat has the embedding bulge, or the embedding groove is located at a groove bottom wall of the accommodating groove if the fixed seat has the embedding groove, and the pivot shaft passes through the embedding bulge and is assembled at a groove side wall of the embedding groove, and
wherein the side impact protection device further comprises a sliding member and an elastic member, the sliding member is slidably arranged on the fixed seat or the side impact protection block at which the embedding groove is located along a direction intersecting an axial direction of the pivot shaft, the elastic member is disposed between the sliding member and the fixed seat or the side impact protection block at which the sliding member is located, the locking structure is formed at an end of the sliding member, the at least two cooperative locking structures are formed on a side wall surface of the embedding bulge, and during a process that the side impact protection block is switched between the extended position and the retracted position, the locking structure is unlocked form or locked with one of the cooperative locking structures by an elastic deformation of the sliding member being linked with the elastic member.

2. The child safety seat according to claim 1 , wherein the locking structure or the at least two cooperative locking structures provided in the side impact protection block are located at an axial end face of the pivotal assembling end, and the at least two cooperative locking structures or the locking structure provided in the fixed seat are located at a groove side wall of the accommodating groove.

3. The child safety seat according to claim 2 , wherein an elastic cantilever is further provided on the axial end face of the pivotal assembling end at which the locking structure is located or on the groove side wall of the accommodating groove, the locking structure is located on the elastic cantilever, and during a process that the side impact protection block is switched between the extended position and the retracted position, the locking structure is unlocked from or locked with one of the cooperative locking structures by an elastic deformation of the elastic cantilever.

4. The child safety seat according to claim 3 , wherein the locking structure is a spherical bump and each of the at least two cooperative locking structures are recesses.

5. The child safety seat according to claim 1 , wherein the at least two cooperative locking structures or the locking structure provided in the fixed seat are located at a groove side wall of the embedding groove or an axial end face of the embedding bulge, and the locking structure or the at least two cooperative locking structures provided in the side impact protection block are located at the groove side wall of the embedding groove or the axial end face of the embedding bulge.

6. The child safety seat according to claim 5 , wherein the locking structure is automatically locked with one of the cooperative locking structures when the side impact protection block is pivoted to the extended position, and the locking structure is automatically locked with the other one of the cooperative locking structures when the side impact protection block is pivoted to the retracted position.

7. The child safety seat according to claim 6 , wherein an elastic cantilever is further provided on the groove side wall of the embedding groove at which the locking structure is located or on the axial end face of the embedding bulge at which the locking structure is located, the locking structure is located on the elastic cantilever, and during a process that the side impact protection block is switched between the extended position and the retracted position, the locking structure is unlocked from or locked with one of the cooperative locking structures by an elastic deformation of the elastic cantilever.

8. The child safety seat according to claim 1 , wherein the fixed seat has an avoidance space for pulling out the free end of the side impact protection block embedded in the accommodating groove.

9. The child safety seat according to claim 1 , wherein the embedding bulge has an arch-shape.

10. The child safety seat according to claim 1 , wherein an outer profile of a cross-section of the locking structure is an arc-shaped protrusion, each of the at least two cooperative locking structures are toothed structures having at least two tooth slots, an axial direction of the toothed structure is the same as an axial direction of the pivot shaft, the arc-shaped protrusion is automatically locked with one of the tooth slots when the side impact protection block is pivoted to the extended position, and the arc-shaped protrusion is automatically locked with the other one of the tooth slots when the side impact protection block is pivoted to the retracted position.

11. The child safety seat according to claim 1 , wherein the side impact protection device further comprises a first unlocking operating member linked with the sliding member, the first unlocking operating member is located on the side impact protection block, and the first unlocking operating member makes the locking structure be unlocked from one of the cooperative locking structures by linking with the sliding member,
wherein the first unlocking operating member is located on a side of the side impact protection block facing the groove bottom wall of the accommodating groove.

12. The child safety seat according to claim 11 , wherein the side impact protection device further comprises a second unlocking operating member which is slidably arranged

Assignees

• Bambino Prezioso Switzerland Ag

Inventors

• Zhang Daliang
• Li Ruyi

Classifications

• B60N2/2863

  backward facing · CPC title

• B60N2/4235

  transversal · CPC title

• B60N2/2872 Primary

  provided with side rests · CPC title

• B60N2/42709

  involving residual deformation or fracture of the structure · CPC title

• B60N2/286

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