Car seat and automatic belt adjustment apparatus thereof

Patent metadata

Field	Value
Publication number	US-12509017-B2
Application number	US-202218550694-A
Country	US
Kind code	B2
Filing date	Apr 8, 2022
Priority date	Apr 9, 2021
Publication date	Dec 30, 2025
Grant date	Dec 30, 2025

Abstract

An automatic belt adjustment apparatus includes a fixing buckle, a belt buckle, a belt retractor, and a position switching member. The belt buckle is configured to be buckled with the fixing buckle. The belt retractor is connected to the other end of the belt. The belt retractor includes a locking assembly configured to selectively limit the belt retractor from automatically retracting the belt. The position switching member is movably disposed on at least one of the fixing buckle and the base, and configured to selectively drive the locking assembly to switch between a first position and a second position. When the position switching member drives the locking assembly to switch to the second position, the locking assembly is refrained from limiting the belt retractor from automatically retracting the belt.

First claim

The invention claimed is:

1 . An automatic belt adjustment apparatus for a car seat, comprising:
a fixing buckle disposed on a base of the car seat; a belt buckle connected to one end of a belt of the car seat, the belt buckle being buckled with the fixing buckle; a belt retractor connected to the other end of the belt and disposed on the base, the belt retractor comprising a locking assembly configured to selectively limit the belt retractor from automatically retracting the belt, a retractor mounting bracket, a rotating shaft for winding the belt, and a ratchet fixedly connected to the rotating shaft, the locking assembly and the rotating shaft are mounted on the retractor mounting bracket, and the locking assembly is selectively engageable with the ratchet to limit rotation of the rotating shaft in a first direction and in a second direction opposite to the first direction; and a position switching member movably disposed on at least one of the fixing buckle and the base, and configured to selectively drive the locking assembly to switch between a first position and a second position, and when the position switching member drives the locking assembly to switch to the second position, the locking assembly is refrained from limiting the belt retractor from automatically retracting the belt.

2 . The automatic belt adjustment apparatus according to claim 1 , wherein when the belt buckle is buckled with the fixing buckle, the position switching member disposed on the fixing buckle is driven to drive the locking assembly to move, such that the locking assembly is switched to the second position; or the position switching member disposed on the base is operated to drive the locking assembly to switch to the second position.

3 . The automatic belt adjustment apparatus according to claim 1 , wherein the locking assembly comprises a first locking member and a second locking member swingably mounted on the retractor mounting bracket, the ratchet comprise a first ratchet and a second ratchet, the first locking member is engageable with the first ratchet to limit rotation of the rotating shaft in a first direction, and the second locking member is engageable with the second ratchet to limit rotation of the rotating shaft in a second direction opposite to the first direction.

4 . The automatic belt adjustment apparatus according to claim 3 , wherein when the locking assembly is switched to the first position, the first locking member is engaged with the first ratchet, and the second locking member is disengaged from the second ratchet; and when the locking assembly is switched to the second position, the first locking member is disengaged from the first ratchet, and the second locking member is engaged with the second ratchet.

5 . The automatic belt adjustment apparatus according to claim 3 , wherein the first ratchet is located on one side of the retractor mounting bracket, the second ratchet is located on the other side of the retractor mounting bracket, the first locking member is located on one side of the rotating shaft and is adjacent to the first ratchet, and the second locking member is located on the other side of the rotating shaft and is adjacent to the second ratchet.

6 . The automatic belt adjustment apparatus according to claim 3 , wherein the locking assembly further comprises a locking linking member slidably disposed on the retractor mounting bracket and located below the first ratchet, one end of the locking linking member is connected to the first locking member, and the other end of the locking linking member is connected to the second locking member.

7 . The automatic belt adjustment apparatus according to claim 6 , wherein a sliding direction of the position switching member on the base intersects with a sliding direction of the locking linking member.

8 . The automatic belt adjustment apparatus according to claim 3 , wherein the locking assembly further comprises a first elastic member disposed between the retractor mounting bracket and the first locking member, and the first elastic member is configured to drive the first locking member to move in a direction of engaging with the first ratchet.

9 . The automatic belt adjustment apparatus according to claim 3 , wherein the locking assembly further comprises a second elastic member disposed between the retractor mounting bracket and the second locking member, and the second elastic member is configured to drive the second locking member to move in a direction of engaging with the second ratchet.

10 . The automatic belt adjustment apparatus according to claim 1 , wherein the belt retractor further comprises a retracting elastic member disposed between the rotating shaft and the retractor mounting bracket, and the retracting elastic member is configured to drive the rotating shaft to rotate toward a direction of automatically retracting the belt.

11 . The automatic belt adjustment apparatus according to claim 1 , further comprising a drive assembly disposed between the position switching member and the locking assembly, wherein the position switching member drives the locking assembly to switch between the first position and the second position via the drive assembly, wherein the position switching member is slidably disposed on the base.

12 . An automatic belt adjustment apparatus for a car seat, comprising:
a fixing buckle disposed on a base of the car seat; a belt buckle connected to one end of a belt of the car seat, the belt buckle being buckled with the fixing buckle; a belt retractor connected to the other end of the belt and disposed on the base, the belt retractor comprising a locking assembly configured to selectively limit the belt retractor from automatically retracting the belt; a position switching member slidably disposed on the base, and configured to selectively drive the locking assembly to switch between a first position and a second position, and when the position switching member drives the locking assembly to switch to the second position, the locking assembly is refrained from limiting the belt retractor from automatically retracting the belt; and a drive assembly disposed between the position switching member and the locking assembly, the position switching member drives the locking assembly to switch between the first position and the second position via the drive assembly, wherein the drive assembly comprises a traction wire, one end of the traction wire is connected to the position switching member disposed on the fixing buckle, the other end of the traction wire is connected to the first locking member, and when the belt buckle is buckled with the fixing buckle, the position switching member is driven to pull the traction wire, such that the first locking member connected to the traction wire is driven to swing in a direction of disengaging from the first ratchet.

13 . The automatic belt adjustment apparatus according to claim 12 , wherein the drive assembly further comprises a fixing tube, the traction wire extends through the fixing tube, one end of the fixing tube is fixed to the fixing buckle, and the other end of the fixing tube is fixed to the base.

14 . The automatic belt adjustment apparatus according to claim 1 , wherein the belt buckle comprises a pushing structure, the position switching member comprises a pushed structure matching with the pushing structure, and when the belt buckle is buckled with the fixing buckle, the position switching member is driven to move on the fixing buckle by cooperation of the pushing structure and the pushed structure.

15 . An automatic belt adjustment apparatus for a

Assignees

• Bambino Prezioso Switzerland Ag

Inventors

• Zhang Daliang

Classifications

• B60R2022/3421

  with means for locking the belt reel in a non-use position, e.g. for seat mounted retractor when the seat is in a non-locked condition · CPC title

• B60R22/105 Primary

  for children (adaptation of children's seats for seat belts B60N2/265, B60N2/2803) · CPC title

• B60R22/415

  with additional means allowing a permanent locking of the retractor during the wearing of the belt · CPC title

• B60R22/357 Primary

  in response to fastening of the belt buckle · CPC title