Air bag module

• US 20070035110A1
• Filed: 12/19/2005
• Published: 02/15/2007
• Est. Priority Date: 08/09/2005
• Status: Active Grant

• Current Assignee: Hyundai Mobis Co., Ltd.
• Original Assignee: Hyundai Mobis Co., Ltd.
• Inventors: Lee, Jung
• Granted Patent: US 7,441,795 B2
• Time in Patent Office: Days
• US Class Current: 280/728.200
• CPC Class Codes: B60R 2021/161 characterised by additional means for controlling deployment trajectory
• CPC Class Codes: B60R 2021/23382 Internal tether means
• 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

Abstract

An air bag module has a cushion size adjusting mechanism mounted for folding a part of a cushion and holding the same in an air bag housing. Thus, the expansion size of the cushion can be adjusted according to the expansion pressure of the inflator because if the expansion pressure of an inflator is large, the cushion is expanded to a full expansion size, thereby improving the performance and reliability. The cushion size adjusting mechanism is mounted to the air bag housing, thereby preventing accidents such as bruises caused when the cushion size adjusting mechanism is exposed to the outside.

Claims

1. An air bag module, comprising:

an airbag housing;

a cushion accommodated in the air bag housing while being folded;

an inflator for supplying a predetermined expansion pressure such that the cushion is expanded at the time of collision; and

a cushion size adjusting mechanism mounted to the air bag housing for folding parts of the cushion and holding the same in the air bag housing, so that the expansion size of the cushion is adjusted according to the expansion pressure of the inflator.

2. The air bag module of claim 1, wherein the cushion size adjusting mechanism includes:

a clip stud consisting of a pin portion passing through the expansion size boundary region of the cushion and the air bag housing and a head portion being torn according to the expansion pressure of the inflator; and

a clip nut fastened to the end of the pin portion of the clip stud.

3. The air bag module of claim 2, wherein the clip stud is formed of plastic material.

4. The air bag module of claim 2, wherein the head portion of the clip stud is attached to the outer surface of the cushion.

5. The air bag module of claim 2, wherein the clip stud has a cut line formed on the boundary of the head portion and pin portion.

6. The air bag module of claim 2, wherein the air bag housing has a through hole for passing the pin portion of the clip stud through.

7. The air bag module of claim 2, wherein an inlet end of the cushion opened so as to introduce the expansion pressure of the inflator thereinto is fixed in the middle of the air bag housing through a retainer.

8. The air bag module of claim 7, wherein the retainer has a through hole for passing the pin portion of the clip stud through.

9. The air bag module of claim 2, wherein further comprising a control portion for controlling the expansion pressure of the inflator in multiple stages according to passenger type information.

10. The air bag module of claim 1, further comprising a passenger sensor for sensing passenger type information and outputting the same to the control portion.