A tether actuation unit includes an actuator configured to form a connection with a tether that is releasable in response to actuation of the actuator, and a housing configured to receive the actuator. The housing includes a tether channel configured to allow the tether to extend therethrough. The tether channel includes sidewalls configured to receive and engage the tether along a portion of its length when the tether extends at an angle from the housing. The sidewalls of the tether channel are configured to limit movement of the tether in response to airbag deployment in order to limit tension applied to the actuator by the tether to a predetermined range of non-orthogonal directions with respect to a central axis of the actuator.

An airbag device includes an actuator of a configuration that causes a string-form coupling member extending from an airbag to be coupled, and controls an inflation aspect of the airbag by causing a state of coupling with the coupling member to be maintained or terminated. The actuator includes a gas generator that can eject a combustion gas and a holder portion that can hold the coupling member. The holder portion includes a holding wall portion, which can hold the wound coupling member on an outer peripheral face side, and a top wall portion that closes a leading end side of the holding wall portion, and a contact region in which the combustion gas can be brought into contact with the coupling member is disposed in a region of the holding wall portion. The actuator causes the coupling member to be severed by causing the combustion gas to come into contact with the coupling member in the contact region, whereby a state of the coupling member being held in the holder portion can be terminated.

There is provided an airbag in which there are fewer restrictions in a place for setting a tension member and a place for setting a vent hole. Airbag (10) of the present invention has bag-shaped airbag main body (20), tension member (30, 30a, 30b) disposed inside airbag main body (20), and vent hole (50) provided in airbag main body (20). In two-dimensional view in which an inner side of inflated and deployed airbag main body (20) is viewed from a direction orthogonal to vent hole (50) via vent hole (50), tension member (30, 30a, 30b) has overlapping portion (35) disposed at a position overlapping vent hole (50), and a dimension of at least a part of overlapping portion (35) in an orthogonal direction is smaller than a gap of a portion of vent hole (50), which corresponds to overlapping portion (35), in the orthogonal direction.

An airbag apparatus includes an airbag cushion including a sub-vent hole, an opening/closing panel temporarily attached to the airbag cushion, and a tether including one end portion fixed to the airbag cushion and the other end portion fixed to the opening/closing panel, in which tension applied to the tether by a force for inflating the airbag cushion allows the tether to pull the opening/closing panel toward the sub-vent hole to close the sub-vent hole, and additional tension applied to the tether by an additional force loaded onto the airbag cushion allows the tether to additionally pull the opening/closing panel and separate the opening/closing panel in a detachably attached state from the airbag cushion to open the sub-vent hole.

An occupant protection device includes: an airbag including an upper inflating portion and a lower inflating portion, and a rear inflating portion having a restraint surface that receives the occupant, the airbag being provided with a hollow portion penetrating in a left-right direction in a center; and a protrusion length adjustment unit configured to adjust a protrusion length from an accommodation position to the restraint surface in the airbag. An exhaust port configured to exhaust the inflation gas is disposed on an inner peripheral surface side in the vicinity of an intersection portion between the upper inflation portion and the lower inflation portion of the airbag. When the protrusion length by the protrusion length adjustment unit is adjusted to be long, the upper inflation portion and the lower inflation portion approach each other, so that an edge member approaches the exhaust port, thereby reducing an exhaust amount.

Disclosed is an airbag apparatus for a vehicle. The disclosed airbag apparatus for a vehicle includes a main cushion part configured to support a passenger's body by being deployed, a vent hole part formed in the main cushion part and configured to pass gas, a tube part coupled to the main cushion part and configured to guide a movement of the gas passed through the vent hole part, and a sub-cushion part coupled to the main cushion part, formed to surround the tube part, and configured to support the head of the passenger at the time of deployment.

A restraint system in a vehicle includes a reaction surface, an airbag including an inflation chamber, and a tube in fluid communication with the inflation chamber. The airbag is inflatable from an undeployed state to a deployed state. The airbag is fixed relative to the reaction surface in the undeployed state and adjacent the reaction surface in the deployed state. The tube extends along the airbag between the airbag in the deployed state and the reaction surface.

An actuator of an airbag device includes a main body portion, which is attached to an attachment base, and a cap including a fitting protruding portion that is inserted into a fitting recessed portion of the main body portion. The fitting protruding portion has a holding portion, which is inserted into a holding hole of a coupling member when fitted to the main body portion and holds a leading end portion of the coupling member, and a movement permitting unit that, when a ceiling portion of the cap is subjected to pressure of a combustion gas of a squib, causes the ceiling portion to move, and causes the holding portion to move from a holding position, wherein the holding portion is inserted into the holding hole of the coupling member, to a holding released position, wherein the holding portion is removed from the holding hole.

An airbag apparatus for reducing an injury may include: an airbag cushion part having a vent hole part through which gas is discharged; a cover member having a communication hole part smaller than the vent hole part, and adjusting the amount of gas discharged through the vent hole part by selectively covering the vent hole part; and a vent tether connected to the airbag cushion part and the cover member, and pulling the cover member in connection with an expansion of the airbag cushion part.

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.