Abstract: A pedestrian airbag device includes an airbag, which is housed folded in a vicinity of a rear end of a hood panel, and an inflator that supplies an inflating gas to the airbag. The airbag includes a vehicle body side wall portion disposed on a body side when inflation is completed, and a pedestrian side wall portion disposed opposing the vehicle body side wall portion. An internal pressure maintenance chamber is enclosed by a peripheral wall coupled to the vehicle body side wall portion and the pedestrian side wall portion, and is configured such that an inflating gas discharged from the inflator can flow into an interior via a general inflating portion in the airbag. A check valve mechanism that prevents a backflow to the general inflating portion side of the inflating gas that has flowed into the interior is disposed in the internal pressure maintenance chamber.

Abstract: A pedestrian airbag device includes an airbag and an inflator that supplies an inflating gas to the airbag. In the airbag, an insertion opening portion for inserting the inflator into the airbag is disposed on the vehicle body side wall portion side. The insertion opening portion includes an insertion slit for inserting the main body portion of the inflator, and an insertion hole for causing the mounting bolt of the inflator to protrude. A guide tether for guiding when the inflator is inserted is disposed inside the airbag so that one end side is joined to the pedestrian side wall portion side, and the other end side is joined to a region on a side from the insertion hole in a peripheral edge of the insertion slit on the vehicle body side wall portion side.

Abstract: An airbag device includes an airbag, a case in which the folded airbag is housed, and an airbag cover that covers the folded airbag. An attachment portion of the airbag cover is attached to a peripheral wall portion of the case by a rivet being caused to pass through. The case is such that a vicinity of a boundary region between the peripheral wall portion and a bottom wall portion is curved in an approximate arc in cross-section. The attachment portion includes a protruding portion that protrudes toward the peripheral wall portion side in an end edge farther to a leading end side than a region of penetration of the rivet.

Abstract: An airbag device is such that an inflator has an inflator main body of an approximately cylindrical form, and is coupled to a housing region together with an airbag and an inner tube by, in a state inserted into an interior of the airbag through an insertion aperture formed in the airbag in a state wherein an outer peripheral side of the inflator main body is covered with an inner tube of an approximately tubular form, an attachment member protruding from the inflator main body being caused to protrude from the airbag in a peripheral edge of the insertion aperture and coupled to the housing region. The inner tube includes a tube main body that has a gas outflow port, and a winding fabric that is wound around an outer peripheral side of the tube main body in such a way that a state wherein the tube main body is wound around the outer peripheral side of the inflator main body can be maintained.

Abstract: An airbag device includes an airbag, a case in which the folded airbag is housed, and an airbag cover that covers the folded airbag. An attachment portion of the airbag cover is attached to a peripheral wall portion of the case by a rivet being caused to pass through. The case is such that a vicinity of a boundary region between the peripheral wall portion and a bottom wall portion is curved in an approximate arc in cross-section. The attachment portion includes a protruding portion that protrudes toward the peripheral wall portion side in an end edge farther to a leading end side than a region of penetration of the rivet.

Abstract: A pedestrian airbag device includes an airbag, which is housed folded in a housing region disposed in a vicinity of a rear end of a hood panel, and an inflator that supplies an inflating gas to the airbag. The airbag includes a vehicle body side wall portion disposed on a body side when inflation is completed, and a pedestrian side wall portion disposed opposing the vehicle body side wall portion, and an internal pressure maintenance chamber enclosed by a peripheral wall coupled to the vehicle body side wall portion and the pedestrian side wall portion is disposed in one portion of an internal region. The internal pressure maintenance chamber is configured in such a way that an inflating gas discharged from the inflator can flow into an interior via a general inflating portion in the airbag, and a check valve mechanism that prevents a backflow to the general inflating portion side of the inflating gas that has flowed into the interior is disposed in the internal pressure maintenance chamber.

Abstract: An airbag device for pedestrian protection includes means for shrinking and tying an airbag after deployment toward the storage. The airbag device includes a protecting sheet that is folded together with the airbag and stored in the storage, and a wrapping sheet that wraps the airbag as folded. The protecting sheet includes a main body and a plurality of straps disposed in a periphery of the main body. The wrapping sheet includes a rupturable portion that is configured to rupture and split the wrapping sheet into a front portion and a rear portion at airbag deployment, and a plurality of through holes each for receiving the straps in a vicinity of the rupturable portion in the front portion. The deployed airbag is shrank and tied toward the storage by passing the straps through the through holes and tying them so the straps do not come off of the through holes.

Abstract: A pedestrian airbag device includes an airbag and an inflator that supplies an inflating gas to the airbag. In the airbag, an insertion opening portion for inserting the inflator into the airbag is disposed on the vehicle body side wall portion side. The insertion opening portion includes an insertion slit for inserting the main body portion of the inflator, and an insertion hole for causing the mounting bolt of the inflator to protrude. A guide tether for guiding when the inflator is inserted is disposed inside the airbag so that one end side is joined to the pedestrian side wall portion side, and the other end side is joined to a region on a side from the insertion hole in a peripheral edge of the insertion slit on the vehicle body side wall portion side.

Abstract: A pedestrian airbag device includes an airbag and an inflator that supplies an inflating gas to the airbag. The airbag includes a cowl cover portion and two pillar cover portions. The inflator includes a main body portion having a substantially columnar outer shape, and a mounting bolt disposed to protrude from an outer peripheral surface of the main body portion in an axis orthogonal direction of the main body portion. The main body portion is mounted on an accommodation site side by using the mounting bolt in a state where the main body portion is inserted into the cowl cover portion while an axial direction is disposed to substantially extend along a left-right direction. A gas flow regulating member suppressing a rearward outflow of an inflating gas discharged from the main body portion is disposed at a position on a rear side of the main body portion inside the cowl cover portion.

Abstract: An airbag device for pedestrian protection includes means for shrinking and tying an airbag after deployment toward the storage. The airbag device includes a protecting sheet that is folded together with the airbag and stored in the storage, and a wrapping sheet that wraps the airbag as folded. The protecting sheet includes a main body and a plurality of straps disposed in a periphery of the main body. The wrapping sheet includes a rupturable portion that is configured to rupture and split the wrapping sheet into a front portion and a rear portion at airbag deployment, and a plurality of through holes each for receiving the straps in a vicinity of the rupturable portion in the front portion. The deployed airbag is shrank and tied toward the storage by passing the straps through the through holes and tying them so the straps do not come off of the through holes.

Abstract: Provided is an airbag which can be easily manufactured though it is provided with a tether inside, and has a reduced fear of gas leakage from a joint region. The airbag includes a joint region of outer circumferential edges of a pair of walls. The joint region includes, between the outer circumferential edges of the pair of walls, a sealing member which has elasticity, and has adhesiveness in an unsolidified state. The joint region is formed by such a sewing that runs a sewing thread through an application area of the sealing member. A tether connects the pair of walls. The joint region includes a region in which the sealing member has a solidified, thus non-adhesive surface, and is pressed against at least one of the walls by the non-adhesive surface, and penetrated by the sewing thread in that state.

Abstract: Provided is an airbag which can be easily manufactured though it is provided with a tether inside, and has a reduced fear of gas leakage from a joint region. The airbag includes a joint region of outer circumferential edges of a pair of walls. The joint region includes, between the outer circumferential edges of the pair of walls, a sealing member which has elasticity, and has adhesiveness in an unsolidified state. The joint region is formed by such a sewing that runs a sewing thread through an application area of the sealing member. A tether connects the pair of walls. The joint region includes a region in which the sealing member has a solidified, thus non-adhesive surface, and is pressed against at least one of the walls by the non-adhesive surface, and penetrated by the sewing thread in that state.

Abstract: A head-protecting airbag device includes an airbag that is inflatable in such a manner as to separate an inboard side wall and an outboard side wall while unfolding downward from a housing. The airbag includes a front inflatable shielding region that covers an inboard side of a window and includes a sub inflatable region that is inflatable later than the main inflatable region. The sub inflatable region includes a supportive inflatable region that is supported by a vehicle body member which is disposed below a beltline. The airbag is stored in the housing such that a front lower corner of the sub inflatable region is folded inward on a crease extending obliquely rearward and downward from the front edge to the lower edge of the airbag before the airbag is subjected to a vertical size reducing folding that brings the lower edge as unfolded flatly close to the upper edge.

Abstract: A head-protecting airbag device includes an airbag that is inflatable in such a manner as to separate an inboard side wall and an outboard side wall while unfolding downward from a housing. The airbag includes a front inflatable shielding region that covers an inboard side of a window and includes a sub inflatable region that is inflatable later than the main inflatable region. The sub inflatable region includes a supportive inflatable region that is supported by a vehicle body member which is disposed below a beltline. The airbag is stored in the housing such that a front lower corner of the sub inflatable region is folded inward on a crease extending obliquely rearward and downward from the front edge to the lower edge of the airbag before the airbag is subjected to a vertical size reducing folding that brings the lower edge as unfolded flatly close to the upper edge.

Abstract: In a head-protecting airbag apparatus, an airbag is folded up and housed in a case that is made from synthetic resin and has an inverse U-shaped sectional contour opening downward. The airbag includes a plurality of mounting portions, and the mounting portions are taken out to an outer circumference of the case to be fastened to the vehicle body structure. The case includes a retaining projection that is inserted through a retaining hole formed on the upper rim of the airbag for retaining the upper rim of the airbag, and a retaining tongue that has a cantilever structure so as to be flexible toward an inner side of the case. A section of the airbag in a vicinity of the retaining hole is placed over an outer circumferential surface of the retaining tongue such that the retaining projection is inserted through the retaining hole.

Abstract: In a head-protecting airbag apparatus, an airbag is folded up and housed in a case that is made from synthetic resin and has an inverse U-shaped sectional contour opening downward. The airbag includes a plurality of mounting portions, and the mounting portions are taken out to an outer circumference of the case to be fastened to the vehicle body structure. The case includes a retaining projection that is inserted through a retaining hole formed on the upper rim of the airbag for retaining the upper rim of the airbag, and a retaining tongue that has a cantilever structure so as to be flexible toward an inner side of the case. A section of the airbag in a vicinity of the retaining hole is placed over an outer circumferential surface of the retaining tongue such that the retaining projection is inserted through the retaining hole.

Abstract: A head protection airbag according to the invention includes: a shielding main body portion which is manufactured by double weaving, is configured to have a substantially rectangular plate shape when the shielding main body portion is flatly deployed so that a vehicle inside-facing wall and a vehicle outside-facing wall overlap with each other, and covers a window on the inside when the inflation is completed; a plurality of mounting portions which protrude upward from an upper edge of the shielding main body portion and mount the upper edge of the shielding main body portion on an upper edge of the window; and a connection port which has a substantially tubular shape, protrudes upward from the upper edge of the shielding main body portion and allows an inflow of inflation gas into the shielding main body portion. The mounting portions and the connection port are separate from the double-woven shielding main body portion and are connected to the shielding main body portion.

Abstract: A head protection airbag according to the invention includes: a shielding main body portion which is manufactured by double weaving, is configured to have a substantially rectangular plate shape when the shielding main body portion is flatly deployed so that a vehicle inside-facing wall and a vehicle outside-facing wall overlap with each other, and covers a window on the inside when the inflation is completed; a plurality of mounting portions which protrude upward from an upper edge of the shielding main body portion and mount the upper edge of the shielding main body portion on an upper edge of the window; and a connection port which has a substantially tubular shape, protrudes upward from the upper edge of the shielding main body portion and allows an inflow of inflation gas into the shielding main body portion. The mounting portions and the connection port are separate from the double-woven shielding main body portion and are connected to the shielding main body portion.

Abstract: The air bag is provided with a non-inflatable part, an inflatable part and a coupling part. The coupling part is made by providing a slit portion in a part of the non-inflatable part, and the coupling part and non-inflatable part are joined together continuously at a connecting end portion so as to form an integral structure. The slit portion is provided in a position immediately before a terminal end on the side of the connecting end portion with a curved section for scattering a load imparted to the connecting end portion. The slit portion is further provided at the terminal end on the side of the connecting end portion of the coupling part with a substantially circular hole-like section for scattering a load imparted to the connecting end portion.