Airbag device

Patent metadata

Field	Value
Publication number	US-12194944-B2
Application number	US-202218554939-A
Country	US
Kind code	B2
Filing date	Mar 14, 2022
Priority date	Apr 16, 2021
Publication date	Jan 14, 2025
Grant date	Jan 14, 2025

Abstract

An airbag device has a first side cushion that expands forward to cover one side of an occupant seated in the seat of the vehicle, a second side cushion that expands forward to cover the other side of the occupant, at least one inflator that injects gas to inflate the first side cushion and the second side cushion, and a connection that connects the first side cushion and the second side cushion. The connecting part is deployed so as to pass through the rear surface region between the seat 1 and the occupant above the seat surface of the seat in the fully expanded state when the expansion and deployment of each side cushion and is complete, and is held in place by the occupant, pulling each side cushion and inward.

First claim

The invention claimed is:

1. An airbag device, comprising:
a first side cushion that expands and deploys forward to cover one side of an occupant seated in a vehicle seat;
a second side cushion that expands and deploys forward to cover the other side of the occupant;
at least one inflator that injects gas to inflate the first and second side cushions; and
a connecting part connecting the first side cushion to the second side cushion, wherein
the connecting part expands so as to pass through the rear surface region between the seat and the occupant above the seat surface in the fully expanded state when each of the side cushions have completed expansion and deployment, and is held in place by the occupant, pulling each of the side cushions inward.

2. The airbag device according to claim 1 , wherein in the fully expanded state, the connecting part connects the front part of the first side cushion to the front part of the second side cushion.

3. The airbag device according to claim 2 , wherein in the fully expanded state, both the connecting point of the connecting part of the first side cushion and the connecting point of the connecting part of the second side cushion are located more forward than the torso of the occupant in the front-to-back direction.

4. The airbag device according to claim 1 , wherein in the fully expanded state, in the rear surface region, the connecting part is located in a height range from the waist to the shoulder of the occupant.

5. The airbag device according to claim 1 , further comprising:
a cushion connecting part connecting, in the fully expanded state, the rear part of the first side cushion and the rear part of the second side cushion, wherein
integrating the first side cushion, second side cushion, and cushion connecting part with each other composes one airbag, and the connecting part is stowed in the seat folded with the airbag in a state overlapped on the lower side of the airbag in a fully expanded state.

6. The airbag device according to claim 1 , further comprising:
a cushion connecting part connecting, in the fully expanded state, the rear part of the first side cushion and the rear part of the second side cushion, where
the connecting part connects to the front part of the first side cushion and the cushion connecting part, or the rear part of the second side cushion.

7. The airbag device according to claim 1 , wherein the first side cushion has a first head cushion part that expands and deploys to cover one side of the head of the occupant, the second side cushion has a second head cushion part that expands and deploys to cover the other side of the head of the occupant, and the connecting part connects the top part of the first head cushion part and the top part of the second head cushion part.

8. The airbag device according to claim 1 , wherein the connecting part, in the fully expanded state, passes through the rear surface region from the side of one side of the occupant to the side of the other side of the occupant.

9. The airbag device according to claim 1 , wherein the connecting part, in the fully expanded state, partially passes through the interior of the seat.

10. The airbag device according to claim 1 , wherein the connecting part has:
a first member connected at a first end to the first side cushion and at a second end to the seat; and
a second member connected at a first end to the second side cushion and at a second end to the seat, and
connects the first side cushion to the second side cushion via the seat.

11. The airbag device according to claim 1 , further comprising:
a forward protecting cushion part attached to the front part of each of the first side cushion and second side cushion as to be connected to each of the cushions and covering the occupant from the forward direction in a fully expanded state, that
connects the front part of the forward protecting cushion part on the first side cushion side to the front part of the forward protecting cushion part on the second side cushion side.

12. The airbag device according to claim 11 , comprising:
a first belt and a second belt that straddle the first side cushion and second side cushion and restrain, in the fully expanded state, the first side cushion and second side cushion from the exterior, where
the coupling between the first belt and second belt is secured to the seat.

Assignees

• Autoliv Dev

Inventors

• Shimizu Takayuki
• Nakashima Atsushi
• Shimizu Yosuke
• Beppu Yoshinori

Classifications

• 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

• B60R21/2338

  Tethers · CPC title

• B60R21/233

  comprising a plurality of individual compartments; comprising two or more bag-like members, one within the other (B60R21/232 takes precedence) · CPC title