Airbag assembly and vehicle seat assembly

Patent metadata

Field	Value
Publication number	US-12049185-B2
Application number	US-202118003509-A
Country	US
Kind code	B2
Filing date	May 28, 2021
Priority date	Jun 30, 2020
Publication date	Jul 30, 2024
Grant date	Jul 30, 2024

Abstract

An airbag assembly includes: an air bag, mounted to a vehicle seat and capable of inflating from an undeployed state to a deployed state, wherein in the deployed state, the air bag extends along the head and torso of an occupant in the vehicle seat, arranged to surround the head and torso of the occupant; and a strap, for mounting the air bag to the vehicle seat and having a first section and a second section, wherein in the deployed state, the strap is tightened, the first section being mounted to the air bag on an outer surface of the air bag in an extension direction of the air bag, and the second section extending on at least one outer side surface of the air bag in a direction at an angle with respect to the extension direction of the air bag.

First claim

The invention claimed is:

1. An airbag assembly for a vehicle seat, the airbag assembly comprising:
an air bag mountable to the vehicle seat and capable of inflating from an undeployed state to a deployed state; and
a strap for mounting the air bag to the vehicle seat, the strap having a first section and a second section, wherein in the deployed state, the strap is tightened, the first section being mounted to the air bag on an outer surface of the air bag in an extension direction of the air bag, and the second section extending on at least one outer side surface of the air bag in a direction at an angle with respect to the extension direction of the air bag,
a diverting arrangement for changing an extension direction of the strap, the diverting arrangement including a pair of first pulleys mountable to side surfaces of a seat base of the vehicle seat and a pair of second pulleys mountable to side surfaces of a seat back of the vehicle seat,
wherein two end portions of the strap are respectively connected to side surfaces of the air bag, and in the deployed state, on each side of the vehicle seat, the strap extends from the end portion of the strap sequentially around a respective second pulley and a respective first pulley.

2. The airbag assembly according to claim 1 , wherein
in the deployed state, the second section located between each second pulley and the end portion of the strap extends in a direction perpendicular to the extension direction of the air bag.

3. The airbag assembly according to claim 2 , wherein:
the air bag has an intermediate portion in a vertical direction, and
the end portion of the strap is located at the intermediate portion.

4. The airbag assembly according to claim 3 , wherein in the deployed state, the first pulley is located in an extension direction of the first section.

5. The airbag assembly according to claim 4 , wherein in the deployed state, the air bag has a front edge spaced apart from the seat back.

6. The airbag assembly according to claim 5 , wherein the first section is located at the front edge.

7. The airbag assembly according to claim 1 , wherein the first section is movable in the extension direction of the air bag.

8. The airbag assembly for a vehicle seat of claim 1 in combination with the vehicle seat, the airbag assembly mounted to the vehicle seat.

9. The airbag assembly according to claim 1 , wherein in the deployed state, the air bag is configured to extend along a head and a torso of an occupant in the vehicle seat, so as to surround the head and torso of the occupant.

10. An airbag assembly in combination with a vehicle seat comprising:
an air bag mounted to the vehicle seat and capable of inflating from an undeployed state to a deployed state, wherein in the deployed state, the air bag extends along the head and torso of an occupant in the vehicle seat, so as to surround a head and a torso of the occupant; and
a strap mounting the air bag to the vehicle seat and having a first section and a second section, wherein in the deployed state, the strap is tightened, the first section being mounted to the air bag on an outer surface of the air bag in an extension direction of the air bag, and the second section extending on at least one outer side surface of the air bag in a direction at an angle with respect to the extension direction of the air bag,
a diverting arrangement for changing an extension direction of the strap, the diverting arrangement including a pair of first pulleys mounted to first and second side surfaces of a seat base of the vehicle seat, respectively and a pair of second pulleys mounted to first and second side surfaces of a seat back of the vehicle seat, respectively,
wherein two end portions of the strap are respectively connected to side surfaces of the air bag, and in the deployed state, on each side of the vehicle seat, the strap extends from the end portion of the strap sequentially around a respective second pulley and a respective first pulley.

11. An airbag assembly for a vehicle seat, the airbag assembly comprising:
an air bag mountable to the vehicle seat and capable of inflating from an undeployed state to a deployed state; and
a strap, for mounting the air bag to the vehicle seat and having a first section and a second section, wherein in the deployed state, the strap is tightened, the first section being mounted to the air bag on an outer surface of the air bag in an extension direction of the air bag, and the second section extending on at least one outer side surface of the air bag in a direction at an angle with respect to the extension direction of the air bag,
a diverting arrangement for changing an extension direction of the strap, the diverting arrangement including a first pulley mountable to a first side surface of a seat base of the vehicle seat and a second pulley mountable to a first side surface of a seat back of the vehicle seat
wherein the diverting arrangement further includes a further first pulley mountable to a second side surface of the seat base of the vehicle seat and a further second pulley mountable to a second side surfaces of the seat back of the vehicle seat.

Assignees

• Autoliv Dev

Inventors

• Wang Kan

Classifications

• B60R2021/2074

  in head rests · CPC title

• B60R21/2338

  Tethers · CPC title

• B60R2021/23386

  External tether means · CPC title

• B60R2021/23161

  specially adapted for protecting at least two passengers, e.g. preventing them from hitting each other · CPC title

• B60R2021/23146

  seat mounted · CPC title