Airbag module

• US 6,824,163 B2
• Filed: 11/08/2002
• Issued: 11/30/2004
• Est. Priority Date: 02/05/2002
• Status: Expired due to Fees

• Current Assignee: Key Safety Systems, Inc. (Ningbo Junsheng Investment Group Co., Ltd.)
• Original Assignee: Key Safety Systems, Inc. (Ningbo Junsheng Investment Group Co., Ltd.)
• Inventors: Sen, Hasan, Sawal, Rolf, Bönsch, Udo
• Primary Examiner(s): Fleming, Faye M.
• Application Number:
  US10/290,313
• Publication Number:
  US 20030146604A1
• Time in Patent Office: 753 Days
• Field of Search: 280/728.2, 280/728.1, 280/731, 280/732, 280/743.1
• US Class Current: 280/728.2
• CPC Class Codes: B60R 2021/23382 Internal tether means
• CPC Class Codes: B60R 2021/2375 Folding devices
• CPC Class Codes: B60R 21/2035 using modules containing inflator, bag and cover attachable to the steering wheel as a complete sub-unit steering wheel covers with tear lines B60R21/21656; assembling of modules B60R21/217
• CPC Class Codes: B60R 21/217 Inflation fluid source retainers, e.g. reaction canisters; Connection of bags, covers, diffusers or inflation fluid sources therewith or together
• CPC Class Codes: B60R 21/276 with means to vent the inflation fluid source, e.g. in case of overpressure B60R21/30 takes precedence; venting means on inflatable member walls B60R21/239

Abstract

An airbag module has a base plate, an inflator and an airbag. To manufacture the airbag module in the most cost effective manner, the airbag is attached to the base plate or the inflator with a clamping connection. The inflator is attached to the base plate by a clamping connection. Alternatively, at least one through opening is located in the base plate, a through opening via which during the manufacture of the airbag module at least one bar can be inserted, to stretch the airbag fastened to the base plate prior to folding the airbag.

Claims

1. An airbag module comprising a hat shaped base plate, the hat shaped base plate having a cylindrical section, a disk shaped gas producing inflator, the disk shaped gas producing inflator having a cylindrical outer periphery, and an airbag, the airbag having a hem section or collar section, wherein the airbag is attached to the hat shaped base plate or the disk shaped gas producing inflator with an encircling clamping connection at the hem section or collar section the clamping connection comprising an annular ring groove located in the cylindrical section of the base plate or on the cylindrical outer periphery of the inflator and a ring-shaped traction element arranged therein forming an essentially gas tight connection between the airbag and the gas producing inflator of the airbag module over the entire periphery.

2. The airbag module according to claim 1, wherein the inflator comprises a housing, which is formed as one place with the base plate.

3. The airbag module according to claim 2, wherein the ring-shaped traction element is sewn into, a ring-shaped pocket of the airbag.

4. The airbag module according to claim 2, wherein the ring-shaped traction element engages a synthetic ring that is connected with the airbag.

5. The airbag module according to claim 1, wherein the ring-shaped traction element is sewn into, a ring-shaped pocket of the airbag.

6. The airbag module according to claim 1, wherein the ring-shaped traction element engages a synthetic ring that is connected with the airbag.

7. The airbag module according to claim 1, wherein the base plate is a diffuser.

8. The airbag module according to claim 1, wherein the base plate is a thin-walled structural part, on a first side, preferably the outer side, of which the clamping connection of the airbag is arranged and on a second side, opposite to the first side, preferably the inner side, of which the clamping connection of the inflator is arranged.

9. The airbag module according to claim 8, wherein the thin-walled structural part of the base plate, on one of the sides a groove is present and that, accordingly, on the opposite side, a ridge is present, whereby in the groove a clamping element for the airbag is arranged, and on the ridge a groove of the inflator is arranged to create a clamping connection.