Toyoda Gosei Co., Ltd.

Yasushi Okada

Yuji Kuriyama

Kazumasa Suzuki

Hiroshi Ogawa

Tatsuo Hirano

Yuji Sato

Takaki Fukuyama

Tsuyoshi Furuno

Masaru Ido

Koh Tajima

Masako Asai

Ikuo Yamada

Kenichi Fukurono

Michihisa Asaoka

Junichi Asanuma

Koji Yamauchi

Masashi Hotta

Koji Kawamura

Shigeyuki Suzuki

Takashi Iida

Yoshiaki Goto

Toru Ozaki

Kensaku Honda

Masakazu Hashimoto

Takuya Hiraiwa

Masaaki Okuhara

Shinichi Ishida

Koji Shibayama

Daisuke Yamamura

Yuki Nonoyama

Ichizo Shiga

Kazumi Ichimaru

Hiroki Murase

Kenji Shibayama

Rie Ichino

Takashi Uemura

Masashi Hashiba

Noriya Nagata

Tatuo Hirano

Kou Tajima

An airbag of a head-protecting airbag device includes a bag body, a plurality of mounting tabs for mounting an upper edge of the bag body on the vehicle body, and a tension cloth. The bag body includes at its terminal region in a front and rear direction where the tension cloth is located a terminal inflatable portion that is partitioned from a remaining general inflatable portion by a terminal partitioning portion. The terminal inflatable portion is so deployable that its upper end region be deployed on an inboard side of a pillar. The mounting tabs include a terminal mounting tab located at the terminal region where the terminal inflatable portion is located and a general mounting tab located at the general inflatable portion. An upward protruding amount of the terminal mounting tab out of the bag body in an unfolded state is greater than that of the general mounting tab.

Head-protecting airbag device

A conduction breaking device includes a movable member accommodated in an accommodation chamber of a case. A cutter portion projects from an advancing side of the movable member in the moving direction. A gas generator is arranged on the trailing side of the movable member in the moving direction. A conduction member extends to connect a pair of external connection portions and includes a pair of base portions and a breakable portion. The base portions are located in the side wall of the case and extend along the moving direction of the movable member. The breakable portion is shaped to connect the base portions to each other and to block the advancing side of the movable member in the moving direction. Step portions are formed in the breakable portion. Engaging portions that are engageable with the step portions are formed in the case.

Conduction breaking device

An airbag apparatus is mounted on a vehicle as housed in a housing and includes an airbag inflatable with inflation gas for catching an object of protection. The airbag includes a sheet-shaped circumferential wall made from synthetic resin. The circumferential wall is plastically deformable in such a manner as to be elongated due to increase of internal pressure caused by being pressed by the object of protection when arresting the object of protection at full inflation.

Airbag apparatus

A side airbag apparatus includes an airbagthat is inflated and deployed in a space between an occupant seated in a vehicle seatand a vehicle body side portion by inflation gas that is supplied from an inflatorin response to an impact applied to the vehicle from a side. The airbaghas a lumbar region protecting portionthat is inflated and deployed beside at least the lumbar region PP of the occupant, thereby protecting the lumbar region PP. In the side airbag apparatus, the lumbar region protecting portionhas a part A at which the thickness in the vehicle widthwise direction is the greatest. The position in the vertical direction of the part A is lower than a highest point B in a front portion of the seat cushionof the vehicle seat. These settings allow the part A to be inflated and deployed at a position that is spaced downward from the upper endU of an ilium of the occupant P.

Side airbag apparatus

A side airbag apparatusis provided between topsof seat backs. When supplied with inflation gas from an inflator, an airbagis projected from a storage portion. At this time, the airbagis first inflated and deployed upward and forward at the height of an occupant, so as to be capable of restricting the movement of the occupant's head toward the inside of the vehicle at an early stage of a side collision.

Side airbag apparatus and method for folding airbag

An airbag apparatus which has an airbag provided at least either on the left side or right side of the circumferential wall with an exhaust opening is disclosed. The exhaust opening is comprised of part of a lap portion of the airbag where a terminal of a front section of the circumferential wall and a terminal of a rear section of the circumferential wall overlap in such a manner that the front section is located inside of the rear section. The front section includes a band portion that extends toward the projecting point of the airbag at full inflation and is coupled to the rear section. The band portion is folded away from the terminal of the front section in a folded-up configuration of the airbag.

Airbag apparatus for a front passenger's seat

A front passenger seat airbag apparatusincludes an airbag, a casesupporting the airbag, and an airbag covercovering the airbag. The caseincludes a tubular inner wall portion. A plurality of claw portionsare arranged along a vehicle widthwise direction on the upper edge of a front inner walland a rear inner wallof the tubular inner wall portion. The airbag coverincludes a tubular outer wall portionhaving a plurality of engaging holes. The tubular outer wall portionis engaged with the caseby inserting and engaging the claw portionsin the engaging holes. The front inner walland the rear inner walleach include connected portions, to each of which a claw portionis connected, and non-connected portions, to which no claw portionis connected, along the arrangement direction of the claw portions. Two non-connected portionsare located on both sides of each connected portion. At least one of the non-connected portionshas cutout portionsthat extend from the upper end of the corresponding inner wall to a position lower than the tipsA of the claw portions

Front passenger seat airbag apparatus

An airbag apparatus for a front passenger's seat includes a case that includes a front storage area that has an airbag mounting plane and a rear storage area. A bottom wall of the rear storage area is located at a lower level than the airbag mounting plane of the front storage area. The airbag has a generally square conical contour whose top is disposed at the front end and includes proximate the front end a gas inlet port. The airbag is secured to the mounting plane of the case by the periphery of the gas inlet port. A lower folded-up portion that is formed by folding up a lower inflatable portion of the airbag is stored in the rear storage area of the case. The airbag apparatus further includes proximate left and right edges of an opening of the case in the rear storage area means for restraining emergence of the lower folded-up portion of the airbag from the opening of the case in an early stage of airbag deployment by holding down left and right end regions of the lower folded-up portion.

The airbag apparatus is provided with a retainer that includes a hold-down portion for attachment of a periphery of a gas inlet of an airbag to the case, a cover wall surrounding an inflator body, deflectors and catches. The cover wall includes a plurality of outlet ports for releasing inflation gas exited discharge ports of the inflator body radially. The deflectors deflect the inflation gas exited the outlet ports in a range of angle from a direction orthogonal to an axis of the inflator body to a downward direction extending toward the hold-down portion. The catches capture residual particles contained in the inflation gas when the gas deflected by the deflectors hit them.

The airbag for a front passenger's seat includes an inner panel comprised of a pair of left and right base cloths. Each of the base cloths has a band shape curved in a generally C shape. A circumferential edge of a communication area communicating left and right shoulder restraining portions of the airbag is constituted by a joint portion joining inner edges of the respective base cloths together. The joint portion includes a corner area having a large curvature. Each of the base cloths includes a reinforcing portion at its inner edge for preventing the corner area from being so deformed as to reduce the curvature thereof upon airbag deployment.

Airbag for a front passenger's seat

An airbag for a front passenger's seat includes a left outer panel, right outer panel, left inner panel and right inner panel. The left and right outer panels are prepared as laterally symmetrical separate entities. Each of the left and right inner panels includes at the upper front end at full inflation a crossing edge that extends in a transverse direction on the airbag at full inflation. Each of the left and right outer panels includes at the upper periphery a central extended region that includes a joint edge for joint with the crossing edge of each of the inner panels. The central extended regions of the left and right outer panels are coupled together at their circumferences except the joint edges.

An airbag cover has lid portions which are opened by a breakable portion being broken when the airbag cover is pushed by an airbag which is being inflated and is formed from a synthetic resin by molding into a single layered airbag cover. A breakable portion on a distal side of the lid portions is formed as a distal edge straight section through cutting operation which utilizes a cutting blade. The part is formed by providing a thick portion and a thin portion so that a maximum change rate which is a rate of difference between a maximum value and a minimum value based on the maximum value is made to be 15% or more without providing at both ends of a sectional area change curve marked by plotting along the part values of sectional areas of a segment of 50 mm along the part an area where the values of the sectional areas are reduced from a center towards both ends thereof as a range where the values of the sectional areas are larger than the minimum value.

Airbag cover

In the airbag device for front passenger's seat of the present invention, an airbag before being housed in the case and mounted on vehicle is folded up through a preparatory folding step and a regular folding step, the regular folding step further including a transverse folding step and a vertical folding step. In a preparatorily folding step, a portion near an upper edge of the passenger's side wall is located to confront the gas inlet port, and the passenger's side wall is flatly developed so as to overlap with a lower part of the circumferential wall. In the transverse folding step, a portion of the preparatorily folded airbag located rearward of the gas inlet port is folded back in two toward a lower side of a lower part of the circumferential wall to bring a rear end thereof closer to the gas inlet port. The airbag device of the present invention shifts an entire rear face of the deploying airbag rearward in a generally vertical condition.

Airbag device for front passenger's seat

The airbag device for front passenger's seat is mounted on the dashboard in front of the front passenger's seat. The airbag device for front passenger's seat includes an airbag to be inflated with the inflation gas, and an inflator for feeding the airbag with the inflation gas of pyro- and long mass flow type. The gas permeability rate of the airbag is 1.0 l/cm/min or under at 20 kPa air pressure, and its weight is 230 g/mor under. This airbag device for front passenger's seat prevents the gas leakage, expands and inflates the airbag properly, and constitutes to the weight reduction.

The airbag includes a bag-shaped circumferential wall formed of base cloths, and a lap portion. In the lap portion, a terminal portion of a downstream side base cloth, which is located in downstream of inflation gas, is superposed on a terminal portion of an upstream side base cloth, which is located in upstream of inflation gas. Then the lapping terminal portions are joined to each other at both sides thereof in a direction extending along edges of the terminal portions, thereby providing the lap portion. A communication port communicating inside and outside of the airbag is provided between the joined portions and between the terminal portions of the upstream and the downstream side base cloths. With this construction, in the course of airbag inflation, inflation gas flowing toward the downstream side base cloth from the upstream side base cloth sucks air into the airbag from outside via the communication port, and when the airbag bumps against a target object of protection halfway of inflation, inflation gas is exhausted out of the airbag via the communication port. Moreover, when the airbag is completely inflated, the communication port is closed with the terminal portions contacted with each other. The airbag of the present invention suppresses increase of internal pressure upon engaging a target object of protection halfway of inflation, as well as completing inflation swiftly.

Growing community of inventors

Aichi-ken, Japan

Yasushi Okada