Method and apparatus for folding an airbag

Details Method and apparatus for folding an airbag Method and apparatus for folding an airbag

B - Operations, Transporting

60

R

B60R 21/16 (2006.01)

Patent

CA 2339160

A method for folding an airbag (2) for an airbag module involves straightening the airbag out in the direction of a straightening axis (11), starting from a gas inlet opening (6) of the airbag. The airbag in the straightened-out state, or during the straightening-out operation, is pushed into a guide sleeve (18) in the direction of the straightening axis. The airbag is then pushed together, and in the method folded, within the guide sleeve in the longitudinal direction thereof, in the direction of the straightening axis. An apparatus for folding an airbag for an airbag module has a straightening ram (10) which, for the purpose of straightening out the airbag, can be pushed into the airbag in the direction of a straightening axis by way of a gas inlet opening which has a guide sleeve. The guide sleeve is arranged coaxially with respect to the straightening ram. The straightening ram can be pushed along the straightening axis. The inner cross-sectional surface area of the guide sleeve is greater than the cross- sectional surface area of the straightening ram, and has a folding ram (20; 30) that, for the purpose of pushing the airbag together, can be moved within the guide sleeve along the straightening axis.

L'invention concerne un procédé qui permet de plier un coussin gonflable (2) destiné à un module coussin gonflable. Selon le procédé, on tire le coussin dans la direction d'un axe de redressement (11), en partant d'un orifice (6) d'entrée d'air dudit coussin; on pousse le coussin à l'état redressé, ou durant l'opération de redressement, à l'intérieur d'un manchon de guidage (18) dans la direction de l'axe de redressement; on comprime le coussin et on le replie à l'intérieur du manchon dans la direction longitudinale de celui-ci et suivant l'axe de redressement. L'invention concerne également un dispositif permettant de plier un coussin gonflable destiné à un module coussin gonflable. Le dispositif comporte un coulisseau de redressement (10) qui, dans le but de tirer le coussin, peut être poussé dans ce dernier suivant un axe de redressement au moyen d'un orifice d'entrée d'air comportant un manchon de guidage. Celui-ci, disposé coaxialement par rapport au coulisseau de redressement, peut être poussé suivant l'axe de redressement. La surface de section transversale du manchon, supérieure à celle du coulisseau, comporte un coulisseau de pliage (20; 30) qui, dans le but de comprimer le coussin, peut être déplacé à l'intérieur du manchon suivant l'axe de redressement.

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