Vehicle occupant restraint apparatus
First Claim
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1. A vehicle occupant restraint apparatus comprising:
- a four-point seat belt that has a pair of right and left upper body restraint webbings; and
a pair of inflatable portions that are respectively provided for the pair of right and left upper body restraint webbings, wherein the pair of inflatable portions inflate with gas supplied from a gas supply device and then deploy so as to restrain a head of an occupant from moving forward in a vehicle longitudinal direction,wherein portions of bag elements that inflate with the gas supplied from the gas supply device, the portions being the occupant'"'"'s head-sides in a vehicle width direction in a deployed state are folded inward along longitudinal directions of the respective webbings, the folded portions being sewed with tear seams that break at an internal pressure in the bag elements, which is higher than or equal to a predetermined value, to form the pair of inflatable portions.
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Abstract
A vehicle occupant restraint apparatus includes a four-point seat belt that has a pair of right and left shoulder webbings; and air belt portions that are respectively provided for the pair of right and left shoulder webbings. The air belt portions receive gas supplied from an inflator and then deploy so as to restrain a head H of an occupant P from moving forward in the vehicle longitudinal direction.
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Citations
20 Claims
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1. A vehicle occupant restraint apparatus comprising:
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a four-point seat belt that has a pair of right and left upper body restraint webbings; and a pair of inflatable portions that are respectively provided for the pair of right and left upper body restraint webbings, wherein the pair of inflatable portions inflate with gas supplied from a gas supply device and then deploy so as to restrain a head of an occupant from moving forward in a vehicle longitudinal direction, wherein portions of bag elements that inflate with the gas supplied from the gas supply device, the portions being the occupant'"'"'s head-sides in a vehicle width direction in a deployed state are folded inward along longitudinal directions of the respective webbings, the folded portions being sewed with tear seams that break at an internal pressure in the bag elements, which is higher than or equal to a predetermined value, to form the pair of inflatable portions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A vehicle occupant restraint apparatus comprising:
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a four-point seat belt that has a pair of right and left upper body restraint webbings; and a pair of inflatable portions that are respectively provided for the pair of right and left upper body restraint webbings, wherein the pair of inflatable portions inflate with gas supplied from a gas supply device and then deploy so as to position a portion of a head of an occupant above a jaw between the pair of inflatable portions and restrain the head of the occupant from moving in a vehicle width direction, wherein the pair of inflatable portions each include a partition member inside a bag element that inflates with the gas supplied from the gas supply device, and the partition member partitions an inside of the bag element into an occupant-side chamber and an anti-occupant-side chamber in such a manner that the occupant-side chamber and the anti-occupant-side chamber are next to each other in a vehicle width direction, the occupant-side chamber deploying in such a manner that a portion of an inner portion of the bag element faces toward and extends above the jaw of the occupant, and the anti-occupant-side chamber deploying so as to face a side opposite the head of the occupant. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A vehicle occupant restraint apparatus comprising:
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a four-point seat belt that has a pair of right and left upper body restraint webbings; and a pair of inflatable portions that are respectively provided for the pair of right and left upper body restraint webbings, wherein the pair of inflatable portions inflate with gas supplied from a gas supply device and then deploy so as to restrain a head of an occupant from moving forward in a vehicle longitudinal direction, wherein the pair of inflatable portions are formed by sewing portions of bag elements with tear seams that break at an internal pressure in the bag elements, which is higher than or equal to a predetermined value.
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Specification