Airbag system

• US 20070096439A1
• Filed: 10/23/2006
• Published: 05/03/2007
• Est. Priority Date: 11/02/2005
• Status: Active Grant

• Current Assignee: Joyson Safety Systems Japan K.K.
• Original Assignee: Takata Corporation (Ningbo Junsheng Investment Group Co., Ltd.)
• Inventors: Kashiwagi, Daisuke
• Granted Patent: US 7,748,730 B2
• Time in Patent Office: Days
• US Class Current: 280/728.2
• CPC Class Codes: B60R 2021/0051 Knees
• CPC Class Codes: B60R 2021/0053 Legs
• CPC Class Codes: B60R 2021/23169 specially adapted for knee protection
• CPC Class Codes: B60R 2021/23176 specially adapted for foot protection
• CPC Class Codes: B60R 2021/23382 Internal tether means
• CPC Class Codes: B60R 21/206 in the lower part of dashboards, e.g. for protecting the knees
• 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 21/2338 Tethers

Abstract

Deployment performance of an airbag may be improved by improving an air tightness of an leg airbag system that includes a knee airbag for restraining occupant'"'"'s legs and a gas generator that generates a jet of gas to inflate the knee airbag. An end of the gas generator is connected to a gas generator ignition control cable and passes through an insertion opening. The insertion opening has an area smaller than a cross section area of the end of the gas generator.

Claims

1. An airbag system comprising:

an airbag configured to restrain an occupant, and

a gas generator for generating a jet of gas to inflate the airbag,

wherein the airbag includes an insertion opening configured to receive the gas generator, and an area of the insertion opening is smaller than a cross sectional area of the gas generator to be inserted.

2. An airbag system according to claim 1, wherein the gas generator insertion opening is circular in shape.

3. An airbag system according to claim 2, further comprising:

a gas generator ignition control cable connected to an end of the gas generator;

wherein the insertion opening is configured to allow the end of the gas generator to pass through for connecting to the gas generator ignition control cable.

4. An airbag system according to claim 1, wherein a periphery of the insertion opening is sewn up in a circle.

5. An airbag system according to claim 1, wherein said airbag further includes a slit for inserting the gas generator inside the airbag so that an end of the gas generator is inserted into the insertion opening from an inside of the airbag.

6. A knee airbag system comprising the airbag system according to claim 1.