Side airbag system

• US 9,701,270 B2
• Filed: 07/12/2016
• Issued: 07/11/2017
• Est. Priority Date: 07/31/2015
• Status: Active Grant

• Current Assignee: Toyoda Gosei Company Limited (Toyota Motor Corporation)
• Original Assignee: Toyoda Gosei Company Limited (Toyota Motor Corporation)
• Inventors: Kino, Masao, Suzuki, Akira, Honda, Kensaku, Goto, Yoshiaki
• Primary Examiner(s): Fleming, Faye M
• Application Number:
  US15/207,551
• Publication Number:
  US 20170028958A1
• Time in Patent Office: 364 Days
• CPC Class Codes: B60R 2021/23146 seat mounted
• CPC Class Codes: B60R 2021/23324 Inner walls crating separate compartments, e.g. communicating with vents
• CPC Class Codes: B60R 21/207 in vehicle seats
• CPC Class Codes: B60R 21/215 characterised by the covers for the inflatable member B60R21/2176 takes precedence
• CPC Class Codes: B60R 21/23138 specially adapted for side protection B60R21/23184, B60R21/232 take precedence
• CPC Class Codes: B60R 21/233 comprising a plurality of individual compartments; comprising two or more bag-like members, one within the other B60R21/232 takes precedence
• CPC Class Codes: B60R 21/2346 Soft diffusers
• CPC Class Codes: B60R 21/237 characterised by the way they are folded
• CPC Class Codes: B60R 21/239 characterised by their venting means

Abstract

A side airbag system includes: an airbag; and a wrapping material that is disposed around a folded-up airbag body into which the airbag is folded so as to prevent the collapse of neatly arranged folds of the folded-up airbag body, the folded-up airbag body being configured as an elongated body having an external shape that is disposed so that a longitudinal direction thereof substantially follows an up-to-down direction, wherein: the wrapping material is disposed so as to wrap around the folded-up airbag body, including a brake planned portion capable of breaking when the airbag inflates which is provided on a front surface side of the folded-up airbag body so as to substantially follow the up-to-down direction; and the break planned portion comprises a low-strength portion where a break strength thereof is set low and a high-strength portion where the break strength is set high.

Claims

1. A side airbag system comprising:

an airbag that is folded up to be accommodated in an accommodating portion that is formed in a seatback of a seat of a vehicle and which is configured to inflate while projecting to the front by allowing an inflation gas to enter an interior thereof; and

a wrapping material that is disposed around a folded-up airbag body into which the airbag is folded so as to prevent the collapse of neatly arranged folds of the folded-up airbag body, the folded-up airbag body being configured as an elongated body having an external shape that is disposed so that a longitudinal direction thereof substantially follows an up-to-down direction, wherein;

the wrapping material is formed of a flexible sheet material and is disposed so as to wrap around the folded-up airbag body, including a break planned portion capable of breaking when the airbag inflates which is provided on a front surface side of the folded-up airbag body so as to substantially follow the up-to-down direction; and

the break planned portion comprises a low-strength portion where a break strength thereof is set low and a high-strength portion where the break strength is set high,

wherein;

the wrapping material is configured to expose at least one end portion of the folded-up airbag body in the up-to-down direction; and

the low-strength portion is provided close to an exposed portion of the folded-up airbag body.

2. The side airbag system according to claim 1, wherein

an opening portion constituting an originating point of a break is formed between the low-strength portion and the high-strength portion.

3. The side airbag system according to claim 1, wherein

a gas discharge port is located at a position situated near the low-strength portion.

4. The side airbag system according to claim 3, wherein

the low-strength portion extends toward an outer periphery of the wrapping material.

5. The side airbag system according to claim 1, wherein

the low-strength portion extends toward an outer periphery of the wrapping material.

6. The side airbag system according to claim 1, wherein

wherein the at least one end portion which is exposed from the wrapping material is a folded-over portion of the folded-up airbag body.

7. The side airbag system according to claim 1, wherein

the wrapping material is disposed to cover substantially a whole area of a circumference of the folded-up airbag body excluding the at least one end portion of the folded-up airbag body in the up-to-down direction,

wherein the at least one end portion which is exposed from the wrapping material is a folded-over portion of the folded-up airbag body.