Ashimori Industry Co., Ltd.

Mazda Motor Corporation

Tomoki Hashizume

Shuhei Konishi

Miwa Matsuoka

Naoki Yamaji

Yuta Minami

Toshihiro Ishikawa

Keisuke Moritani

Kazuhiko Soemoto

Yoshio Shimazaki

Hideharu Saiki

Taei Shibahara

Akihiro Maita

Tomohisa Ohmori

Junichi Yoshinaga

Jyunya Iida

An airbag device (), having an airbag (), is installed in a side wall () inside a vehicle cabin. The airbag () includes an inflatable section () configured to be inflated with gas and is disposed in an upper portion of the side wall (). An inflator () supplies gas to the inflatable section (), inflating and deploying the airbag () downward. A connecting member () connects the airbag () and the vehicle body () and is pulled between the vehicle body () and the airbag () that is being inflated and deployed. When the airbag () is inflated and deployed, a support portion () of the connecting member () supports the inflatable section () from the side wall () side of the airbag and pushes it toward the inner side of the vehicle cabin.

Airbag device

An action of once strongly pressing an airbag against a pillar trim at the initial stage of deployment is omitted to enable the airbag to be quickly inflated and deployed without reducing the deployment speed thereof. An airbag device includes a folded airbag () that is attached to an upper part of a side wall inside a vehicle cabin in the front-rear direction of a vehicle, and an inflator that inflates and deploys the airbag () to the lower side of the vehicle. The airbag () includes a roll-folded portion (R) rolled from one end thereof opposite from an attaching side, and an accordion-folded portion (J) continuous with the roll-folded portion (R) and folded in an accordion manner. The accordion-folded portion (J) is folded so as to be located at a side of the roll-folded portion (R). The accordion-folded portion (J) is formed by folding the roll-folded portion (R) into two and making accordion folds from the two-folded portion so as to have the same width as the width (L) of the two-folded roll-folded portion (R).

In an airbag device to be mounted to a vehicle-body side wall, an airbag and a mounting bracket are temporarily, but securely, attached to each other, so that mounting of the airbag to the vehicle-body side wall can be easily performed. A bolt () is inserted through a plurality of mounting tabs () provided on an airbag () of an airbag device (), a mounting bracket () having inner and outer plates () and (), and an annular member () provided in the inner plate (). In this state, a toothed washer () is fitted and temporarily attached to the bolt (). The annular member () is fastened by screwing the bolt () into a nut () attached to the vehicle-body side wall () when the airbag () is mounted to a vehicle-body side wall ().

A curtain airbag device for a vehicle has a curtain airbag main bodythat is disposed along a longitudinal direction of a vehicle body while covered with an A pillar trimand roof trim, and folded in an A pillarand a roof side rail partof the vehicle body so as to be able to deploy downward within a cabin. The curtain airbag main bodyis provided with a twisted partthat is twisted such that an initial deployment force, generated upon inflation and deployment of the curtain airbag main bodylocated in a vicinity of the A pillar trim, is acted in a separation direction in which the A pillar trimis parted away from the A pillar part, to push open the A pillar trimtoward an inside of the cabin. At least an upper surface of the twisted partis regulated by a supporting bracketand disposed in the vehicle body.

Curtain airbag device for vehicle

An airbag is quickly inflated and deployed along an inner side wall of a vehicle while suppressing variations of the deployment direction of the airbag inflated and deployed from an upper part of the vehicle. An upper edge side of an airbag (), which deploys first, is bellows-folded to form a bellows portion (J), and a lower edge side continuous with the bellows portion (J) is roll-folded toward the vehicle's exterior side (G) to form a roll-folded portion (R). The roll-folded portion (R) is formed to have a larger width than the bellows portion (J) in the vehicle's width direction and the both sides thereof are folded back upward. The bellows portion (J) is folded in substantially half and is wrapped by the roll-folded portion (R) from below and is accommodated therein. When the airbag () deploys, first, the bellows portion (J), whose deployment is restricted by the roll-folded portion (R) on both sides, deploys toward the lower side of the vehicle, and the roll-folded portion (R) is pushed by the deployment force thereof toward the trim () and opens the trim (), through which the roll-folded portion (R) pops out and deploys in the vehicle.

A development restricting member is configured to include a fixing section attachable to a body of a vehicle above the pillar garnish, a holding section opposing to the fixing section, and a middle connecting section connecting a lower end part of the fixing section and a lower end part of the holding section, wherein an upstanding section is provided in a middle part of a base end part and a top end part of the holding section to extend toward the fixing section, so that a folded curtain airbag is housed so as to be surrounded by the fixing section, the holding section, and the upstanding section.

Member for restricting expansion of curtain airbag and structure of portion where curtain airbag is mounted

An airbag () has a vent hole () in one side end portion. One end of a third base fabric () is sewn to the airbag () through a first sewn portion () that closes the vent hole (), and the other end of the third base fabricis sewn to the other side end portion of the airbag () through a second sewn portion (). The first sewn portion () has weaker binding force by sewing than the second sewn portion () so that the first sewn portion () is separated to open the vent hole () when tension force is applied from the third base fabric () to the first and second sewn portions () and ().

Intended is to always provide effective impact reduction by releasing gas at a timing of pushing into airbag. An airbag () has a vent hole () in one side end portion. One end of a third base fabric () is sewn to the airbag () through a first sewn portion () that closes the vent hole (), and the other end of the third base fabricis sewn to the other side end portion of the airbag () through a second sewn portion (). The first sewn portion () has weaker binding force by sewing than the second sewn portion () so that the first sewn portion () is separated to open the vent hole () when tension force is applied from the third base fabric () to the first and second sewn portions () and ().

Growing community of inventors

Settsu, Japan

Tomoki Hashizume