Gas bag module

Details Gas bag module Gas bag module

2001-01-17

2001-09-11

Culbreth, Eric (Department: 3611)

Land vehicles

Wheeled

Attachment

C280S728300, C280S743200, C411S501000

Reexamination Certificate

active

06286859

ABSTRACT:

TECHNICAL FIELD
The invention relates to a gas bag module.
BACKGROUND OF THE INVENTION
In conventional gas bag modules having a mounting part, tethers or the gas bag itself must be fastened very securely and hence in a costly manner to the mounting part, so that they are not detached from their anchoring on activation of the gas bag module, in which process they are stressed in a tensile manner. This detachment from the anchoring can take place for example by a tearing out of the piece of fabric, i.e. of the tether or of the gas bag.
BRIEF SUMMARY OF THE INVENTION
The invention provides a gas bag module in which the piece of fabric material is fastened more securely to the mounting part and, furthermore, can also be mounted more simply in the gas bag module. This is achieved in a gas bag module which comprises at least one mounting part and at least one piece of fabric material which is stressed on activation of the gas bag module and which is provided with at least one opening. The gas bag module further comprises a force-transmitting device by which the piece of fabric material is fastened to the mounting part. The device comprises a first rivet reinforcing the opening in the piece of fabric material, and a second rivet penetrating the first rivet and connecting the piece of fabric material with the mounting part. In the gas bag module according to the invention, the piece of fabric is reinforced by the first rivet on the one hand, so that a tearing out is no longer so easily possible, and on the other hand the second rivet, which serves for the actual fastening of the piece of fabric material to the mounting part, can be more easily mounted. The latter advantage results from the fact that hitherto always the rivet had to be inserted through the unstable piece of fabric material and the mounting part, which was possible with difficulty with the frequently difficult accessibility of the corresponding openings on the mounting part. In the gas bag module according to the invention, however, the first rivet serves at the same time as a guide for the second rivet, which can be inserted very simply through the first rivet.
The piece of fabric material is preferably a gas bag or a tether.
In the preferred embodiment, the first rivet connects a part of plastic with the piece of fabric material to form a unit. This unit is then fastened to the mounting part by the second rivet. The fastening of the piece of fabric material and the plastic part hitherto had only to take place with the fastening of these parts to the mounting part, which is often very difficult because the plastic part is usually provided with openings which are undersized compared with the rivet, so that in the fastened state it does not have any play under any circumstances. However, as stated, this makes the mounting of the rivet more difficult. In the preferred embodiment, however, the first rivet is already guided through the plastic part and the unstable piece of fabric material, so that the second rivet can be easily directed through the first rivet before it is deformed.
The plastic part is usually a gas bag covering which forms a part of the gas bag module.
For better fastening of the piece of fabric material to the plastic part, provision is made furthermore that the piece of fabric material is turned over on the edge of the plastic part around the latter and thereby surrounds the edge. The first rivet extends through the piece of fabric material at both opposite sides of the plastic part and through the plastic part itself.
Another embodiment of the invention makes provision that the piece of fabric material is a gas bag which is fastened to the mounting part in the region of its inflation orifice.


REFERENCES:
patent: 3531532 (1987-03-01), None
patent: 29607536 (1996-09-01), None
patent: 19929762 (2000-01-01), None
patent: 19829755 (2000-01-01), None

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