An occupant protection device for a vehicle includes a seat frame, an inflator and a side airbag. The seat frame is provided at a seat lower side of a side support portion. The seat frame includes an upright wall portion and an upper wall portion. The inflator is provided at the seat lower side of the upper wall portion. The side airbag is disposed between the side support portion and the seat frame. In an inflated state, the side airbag includes a first inflation portion that causes an upper portion of the side support portion to bulge to the seat upper side and the seat width direction inner side, and a second inflation portion that causes a lower portion of the side support portion to bulge to the seat upper side and the seat width direction inner side.

A head-protecting airbag device includes an airbag and a plurality of casings, each of which stores a folding completion body of the airbag, wherein: each of the casings has an opening for protruding the airbag; the casings are connected to each other by bendable coupling pieces; the folding completion body is configured to be carried in a state of being stored in one casing of the casings by bending of the coupling pieces; the coupling piece has a curved portion that is disposed in a curved manner by reversing between a base portion and a tip portion; and the curved portion is formed such that a protruding direction from a reference line connecting the base portion and the tip portion of the coupling piece is set in a direction intersecting with a surface along an overlapping direction of a longitudinal direction of the one casing with openings.

An airbag for a vehicle is proposed. The airbag includes an inflator configured to generate gas, the airbag cushion connected to the inflator and configured to expand by the gas, and a variable vent provided in a first side of the airbag cushion and configured to control opening and closing state of a vent hole of the variable vent for gas escape from the airbag cushion in response to an operational condition of the airbag cushion.

A center airbag device may include: an inflator positioned between first and second seats, and generating an operating gas; a chamber part receiving the operating gas generated by the inflator, and expanding between the first and second seats; an internal tether part positioned in the chamber part, and connected to one or more of the top and side surfaces of the chamber part so as to control the deployment shape of the chamber part; and a locking release part connected to the internal tether part, and removing a restriction of the internal tether part according to a control signal.

The present disclosure describes a roof-mounted airbag apparatus in a vehicle. The vehicle includes a roof, an instrument panel, and two passenger seats in a front row. The airbag apparatus includes an inflator and an airbag that is fluidly coupled to the inflator. The airbag is inflatable and deployable from the roof in an interior of the vehicle between the passenger seats and the instrument panel, and includes a cavity.

A position estimation unit (2) comprising a first transceiver device (3) and a processing unit (10) that is arranged to repeatedly calculate time-of-flight (TOF) for radio signals (x.sub.1, x.sub.2, x.sub.3, x.sub.4, x.sub.5, x.sub.6) sent pair-wise between two transceivers among the first transceiver device (3) and at least two other transceiver devices (7, 8, 9); calculate possible positions for the transceiver devices (3, 7, 8, 9), which results in possible positions for each transceiver device (3, 7, 8, 9); and perform Multidimensional scaling (MDS) calculation in order to obtain relative positions of the transceiver devices (3, 7, 8, 9) in a present coordinate system. After two initial MDS calculations, between every two consecutive MDS calculations, the processing unit (10) is arranged to repeatedly perform a processing procedure comprising translation, scaling and rotation of present coordinate system such that a corrected present coordinate system is acquired. The processing procedure is arranged to determine the corrected present coordinate system such that a smallest change for the relative positions of the transceiver devices (3, 7, 8, 9) between the consecutive MDS calculations is obtained.

The far side airbag system has an airbag which is deployed and inflated between adjacent vehicle seats arranged side-by-side in the width direction when an impact is detected against one of a pair of side wall portions of the vehicle. The airbag includes an upper inflation portion having a portion deployed and inflated on a lateral side of a head portion of an occupant seated in the vehicle seat on a side farther from the specific side wall portion, and a lower inflation portion in which a portion including at least a lower end of the lower inflation portion is deployed and inflated between a console box arranged between the adjacent vehicle seats and the occupant. In the upper inflation portion, the portion positioned on the lateral side of the head portion is deployed and inflated such that a dimension in the width direction increases toward a front side.

Embodiments of the present disclosure relate to a vehicle seat airbag apparatus, wherein: when a side collision accident occurs, an active vent hole is closed to delay the deployment speed of a front cushion and thus to enable a side cushion so as to have sufficient internal pressure, thereby improving ability to respond to a side collision; and when a frontal collision accident occurs, the active vent hole maintains an open state to rapidly deploy the front cushion, thereby improving ability to respond to a frontal collision.

A side airbag device includes: a side airbag in a folded state; a gas generator that includes an attachment portion to be attached to a vehicle, and that is configured to generate inflation gas to be supplied to the side airbag; a wrapping sheet that covers peripheries of the side airbag and the gas generator, and that is breakable when the side airbag is deployed and inflated; and a wire harness that includes a connection end portion electrically connected to the gas generator, and that is led out to an outer portion of the wrapping sheet. The wire harness is provided with a first locking portion, and the wrapping sheet is provided with a second locking portion that is locked to the first locking portion.

A side airbag device is provided in a seat back of a vehicle seat. The side airbag device includes: a primary airbag configured to be deployed forward and in an up-and-down direction from an outer portion of the seat back in a vehicle width direction; and a secondary airbag connected to the primary airbag via a connecting portion, communicating with the primary airbag through a communication hole provided in the connecting portion, and configured to be deployed in the vehicle width direction from the primary airbag. The secondary airbag is folded to a side opposite to the primary airbag along a first fold passing above the connecting portion and extending in a front-and-rear direction. In a state where the secondary airbag is folded along the first fold, the primary airbag and the secondary airbag are wound or folded around an axis extending in the up-and-down direction.