A passenger protection apparatus includes an inflator and an airbag. The inflator configured to supply gas and the airbag is configured to deploy to surround a sitting position, of a passenger by the gas supplied from the inflator. One end of the airbag is supported on an upper portion of a vehicle. The airbag includes a main airbag configured to deploy around the sitting position of the passenger, and a sub-airbag configured to deploy on an inner wall surface of the main airbag.

In one example, an apparatus for helping to protect an occupant of a vehicle includes an inflatable vehicle occupant protection device having a deflated condition and an inflated condition. The protection device includes a first panel having a centerline and first and second openings. A second panel is secured to the first panel to define an inflatable volume. First and second self-adaptive vents are secured to the first panel over the first and second openings on opposite sides of the centerline for selectively releasing inflation fluid from the inflatable volume in response to penetration of the occupant into the protection device. A first reinforcing stitching extends through the first panel and around a portion of the first self-adaptive vent. A second reinforcing stitching extends through the first panel and around a portion of the second self-adaptive vent. Each of the first and second reinforcing stitchings is spaced entirely from the respective first and second self-adaptive vents.

An airbag device may include: an airbag cushion part inflated by operating gas introduced thereto; a vent part formed through the airbag cushion part, and configured to discharge the operating gas within the airbag cushion part; a cord movement prevention part mounted on one side of the vent part; and one or more tether cord parts mounted on the other side of the vent part, and configured to tighten and close the vent part while passing through the cord movement prevention part, when the airbag cushion part is deployed.

A seat including a seatback having a top and two sides extending downwardly from the top and an airbag supported by the top and the two sides of the seatback and including a tube inflatable forward and downward from the top. The airbag defining at least one inflation chamber in fluid communication with the tube. The inflation chamber extending from at least one side of the seatback towards the tube.

A vehicle including an instrument panel, a front seat rotatable between a forward-facing position and a rearward-facing position, and an airbag inflatable between the instrument panel and the front seat. The vehicle includes a controller including a processor and a memory storing processor-executable instructions wherein the processor is programmed to identify that the front seat is rearward-facing, inflate an airbag in response to a sensed frontal impact, and open an external vent in the airbag during inflation in response to identification that the front seat is rearward-facing.

A side airbag device includes: an inflator; a cushion that is expandable from the side of a seat toward a front of a vehicle; a vent hole that is provided at a predetermined position of the cushion and that discharges the gas; a patch that openably covers the vent hole from an inside of the cushion; a tether that is connected to the patch and a predetermined position (a tether cutter) of the side of the seat, the tether pulling the patch toward a rear of the vehicle so as to open the vent hole when the cushion is expanded and deployed; and a tether cutter that is configured to cut the tether in response to information relating to a state of the vehicle.

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 includes first and second inner tethers, first and second vent holes formed on left and right sides of the airbag, and first and second opening/closing members capable of opening/closing the first and second vent holes. A first opening/closing tether has a first end portion coupled to the first opening/closing member and a second end portion coupled to the first inner tether, and a second opening/closing tether has a first end portion coupled to the second opening/closing member and a second end portion coupled to the second inner tether. When an occupant contacts the airbag, at least one of the first and second inner tethers is deformed to move at least one of the first and second opening/closing tethers toward the corresponding vent hole and cause at least one of the first and second opening/closing members to open the corresponding vent hole.

An airbag assembly includes a housing and an airbag. The airbag is supported by the housing and includes a vent. The airbag assembly includes a tether supported by the housing and fixed to the vent. The airbag assembly includes a tether release operatively coupled to the tether. The airbag assembly includes a tether retractor supported by the housing and fixed to the tether.

An airbag apparatus includes: a cover that covers a vent hole which is formed on an airbag bag body from an inner part of the airbag bag body; a fixation part that supports the cover movably; and a strap that is connected to the cover, wherein a width of the strap is smaller than a diameter of the vent hole.