Airbag device for front passenger's seat
First Claim
1. An airbag device for front passenger seat of a vehicle, the airbag comprising:
- an airbag deployable up and rearward from top face of instrument panel for protecting a passenger when fed with inflation gas;
a case for housing the folded airbag; and
an airbag cover arranged in top face of the instrument panel, the airbag cover including a door pushed and opened by the airbag when the airbag deploys therefrom;
wherein;
the airbag includes a passenger'"'"'s side wall and a circumferential wall extending from outer edge of the passenger'"'"'s side wall;
when the airbag is deployed, the passenger'"'"'s side wall is arranged generally vertically to confront a passenger, and the circumferential wall narrows in a generally conical shape toward a front of the vehicle;
the airbag includes a gas inlet port in a lower front part of the circumferential wall as deployed, the inlet port being arranged generally horizontally;
the airbag is attached to the case at a periphery of the gas inlet port;
when housed in the case and mounted on the vehicle, the airbag has preparatory folds that place the airbag in a preparatorily folded state and a regular folds, the regular folds include transverse folds to reduce a longitudinal dimension of the preparatorily folded airbag and longitudinal folds to reduce a transverse dimension of the preparatorily folded airbag;
in the preparatorily folded state, an airbag portion near an upper edge of the passenger'"'"'s side wall is located in a position to confront the gas inlet port, and the passenger'"'"'s side wall is flatly developed to overlap with a lower part of the circumferential wall;
the transverse folds are configured such that a portion of the preparatorily folded airbag located rearward of the gas inlet port is folded back toward a lower side of the lower part of the circumferential wall such that a rear end thereof is located closer to the gas inlet port, thus forming a folded-back portion, which overlaps with a remainder of the rear portion of the gas inlet port;
the folded-back portion and the remainder of the rear portion of the gas inlet port are roll-folded on the circumferential wall from a fold on which the folded-back portion of folded and located over the vicinity of the gas inlet port;
when housed in the case and mounted on a vehicle, a leading end of the folded-back portion is located within a range from the gas inlet port to a hinge portion of the door of the airbag cover in an inner surface of a rear part of the case; and
when housed in the case and mounted on a vehicle, the leading end of the folded-back portion is located immediately above a portion of the rear portion most proximate to the gas inlet port and located at a lowermost position of the rear portion of the gas inlet port, except for the portion of the rear portion most proximate to the gas inlet port, and at a rearmost position of the rear portion.
1 Assignment
0 Petitions
Accused Products
Abstract
In the airbag device for front passenger'"'"'s seat of the present invention, an airbag before being housed in the case and mounted on vehicle is folded up through a preparatory folding step and a regular folding step, the regular folding step further including a transverse folding step and a vertical folding step. In a preparatorily folding step, a portion near an upper edge of the passenger'"'"'s side wall is located to confront the gas inlet port, and the passenger'"'"'s side wall is flatly developed so as to overlap with a lower part of the circumferential wall. In the transverse folding step, a portion of the preparatorily folded airbag located rearward of the gas inlet port is folded back in two toward a lower side of a lower part of the circumferential wall to bring a rear end thereof closer to the gas inlet port. The airbag device of the present invention shifts an entire rear face of the deploying airbag rearward in a generally vertical condition.
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Citations
10 Claims
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1. An airbag device for front passenger seat of a vehicle, the airbag comprising:
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an airbag deployable up and rearward from top face of instrument panel for protecting a passenger when fed with inflation gas; a case for housing the folded airbag; and an airbag cover arranged in top face of the instrument panel, the airbag cover including a door pushed and opened by the airbag when the airbag deploys therefrom;
wherein;the airbag includes a passenger'"'"'s side wall and a circumferential wall extending from outer edge of the passenger'"'"'s side wall; when the airbag is deployed, the passenger'"'"'s side wall is arranged generally vertically to confront a passenger, and the circumferential wall narrows in a generally conical shape toward a front of the vehicle; the airbag includes a gas inlet port in a lower front part of the circumferential wall as deployed, the inlet port being arranged generally horizontally; the airbag is attached to the case at a periphery of the gas inlet port; when housed in the case and mounted on the vehicle, the airbag has preparatory folds that place the airbag in a preparatorily folded state and a regular folds, the regular folds include transverse folds to reduce a longitudinal dimension of the preparatorily folded airbag and longitudinal folds to reduce a transverse dimension of the preparatorily folded airbag; in the preparatorily folded state, an airbag portion near an upper edge of the passenger'"'"'s side wall is located in a position to confront the gas inlet port, and the passenger'"'"'s side wall is flatly developed to overlap with a lower part of the circumferential wall; the transverse folds are configured such that a portion of the preparatorily folded airbag located rearward of the gas inlet port is folded back toward a lower side of the lower part of the circumferential wall such that a rear end thereof is located closer to the gas inlet port, thus forming a folded-back portion, which overlaps with a remainder of the rear portion of the gas inlet port; the folded-back portion and the remainder of the rear portion of the gas inlet port are roll-folded on the circumferential wall from a fold on which the folded-back portion of folded and located over the vicinity of the gas inlet port; when housed in the case and mounted on a vehicle, a leading end of the folded-back portion is located within a range from the gas inlet port to a hinge portion of the door of the airbag cover in an inner surface of a rear part of the case; and when housed in the case and mounted on a vehicle, the leading end of the folded-back portion is located immediately above a portion of the rear portion most proximate to the gas inlet port and located at a lowermost position of the rear portion of the gas inlet port, except for the portion of the rear portion most proximate to the gas inlet port, and at a rearmost position of the rear portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification