Abstract: An airbag device capable of quickly deploying an airbag with a compact inflator, and easy to manufacture.

Abstract: An air bag device of the present invention includes an bag member formed by a circular front-side cloth and a circular reverse-side cloth which are sewn together at their outer peripheral edge portions. The air bag device is provided with an annular lid member for closing a plurality of gas discharge portions formed in the reverse-side cloth. Therefore, in this air bag device, the bag member can be instantaneously inflated and expanded to effectively restrain the passenger arid also to effectively absorb an impact energy acting on the passenger.

Abstract: The present invention provides an air bag device in which an airbag member can be quickly and positively inflated and expanded, with its central portion instantaneously inflated. The present invention describes an air bag device 10 in which an intermediate cloth of a polygonal shape, having a gas inlet port leading to an inflator, is disposed between a front-side cloth and a reverse-side cloth which are sewn together at their peripheral edge portions. Part of a peripheral edge portion of the polygonal intermediate cloth is sewn to the front-side cloth, and gas outlet ports are provided respectively at those portions or this peripheral edge portion which are not sewn to the front-side cloth. With this construction, an airbag member can be quickly and positively inflated and expanded, with its central portion instantaneously inflated.

Abstract: By disposing external straps 36 to 38 which are passed through a tubular member 34 which passes through an air bag 21 in a tunnel-like fashion to open in side surfaces of the air bag 21 are disposed on an outer circumference of the air bag 21 and controlling the deployment shape of the air bag 21 by the external straps 36 to 38 so disposed, the occupant restraining performance of the air bag can effectively be enhanced.

Abstract: Three apex portions of a triangular air bag 32 are folded toward a central portion of the air bag, respectively, so that the respective apex portions and a retainer are coupled together by a restricting member 39, and thereafter, the air bag 32 is folded up into an appropriate shape. In an earlier stage of deployment of the air bag 32, the inflation of the air bag 32 to its maximum capacity is restricted by the restricting member 39, whereby the air bag 32 is allowed to inflate quickly to a capacity which is smaller than its maximum capacity, thereby making it possible to get the air bag 32 ready for restraining an occupant. In a later stage of deployment of the air bag 32 that occurs thereafter, when an internal pressure of the air bag 32 reaches or exceeds a predetermined value, the restricting member 39 breaks or extends.

Abstract: A restricting member 39 disposed along an outer surface of an air bag 32 restricts an axial inflation of the air bag 32 in an earlier stage of deployment of the air bag 32, and in a later stage of deployment, the restricting member 39 allows for the inflation of the air bag 32 to its maximum capacity through breakage of brittle portions 41b. In the deployment process of the air bag 32, since vent holes 37b formed in a base fabric 37 of the air bag 32 are closed by the restricting member 39, the leakage of gas from the vent holes 37b is prevented to thereby enable a quick deployment of the air bag 32. Then, when the brittle portions 41b on the restricting member 39 break, the vent holes 37b are opened.

Abstract: An air bag apparatus, includes: an inflator; an air bag having a corner portion that is projectable radially outwardly and a guide portion that is provided on a back side of a surface to face an occupant of the vehicle; and a strip that is disposed in an interior of the air bag so that a deployment shape of the air bag is controlled by virtue of a tensile force acting on the strip. The strip has one end that is fixed to the corner portion. The air bag has a mounting portion at which the other end of the strip is fixed. The strip is arranged to pass through the guide portion slidably to be fixed to the mounting portion at the other end thereof.

Abstract: An air bag apparatus for side crash, includes an acceleration sensor, an inflater and an air bag. The acceleration sensor detects acceleration in a side direction larger than a predetermined value to generate a detection signal. The inflater generates a gas in response to the detection signal. The air bag is folded initially, and expands with the gas. The air bag includes a main section and a protrusion section which is provided at a tip portion of the main section such that an inner space of the protrusion section is connected with an inner space of the main section. The protrusion section has at least one opening from which the gas is spouted. The air bag further includes at least one partition provided in an inner space of the air bag.

Abstract: An airbag device comprises an inflator which generates a pressure by means of a fluid; an airbag which expands by the pressure from said inflator; and an inlet pipe which communicates between said inflator and said airbag, wherein said inlet pipe comprises: a straight portion having an approximately equal inner diameter; a throat portion provided on the downstream side of said straight portion and having an inner diameter decreased towards the downstream; and a diffuser portion provided on the downstream side of said throat portion and having an inner diameter increased towards the downstream so as to become approximately the same as the inner diameter of said straight portion.

Abstract: An airbag inflator performance test system includes: a cylindrical tank; a disk-shaped piston vertically movably disposed with a gap between the piston and an inner peripheral face of the tank, the gap allowing gas to flow; a piston rod that projects upward from the piston and runs slidably through the tank so as to guide vertical movement of the piston; a lower chamber defined within the tank beneath the piston; an upper chamber defined within the tank above the piston; an inflator disposed in the lower chamber; a pressure sensor for detecting a pressure of the upper chamber; and a piston displacement sensor for detecting a displacement of the piston in order to detect a volume in the upper chamber. After ignition of the inflator, an inflator local work and an inflator total work, which are indexes of the energy of the inflator, are calculated based on the pressure and the volume of the upper chamber.

Abstract: A squib that is used by being connected to a bus is formed by assembling an explosive unit and a communication/ignition unit that have been constructed as separate components. The communication/ignition unit is provided with an IC substrate for ignition and communication that is electrically connected to a bus wire. The explosive unit is provided with explosive, an ignition element, and a header that is interposed between the ignition element and the IC substrate, and that electrically connects the two. In this IC integrated type of squib that is used for communication and ignition, it is possible to prevent the explosive and the IC from mutually interfering with the performances of each other.

Abstract: An airbag device capable of quickly deploying an airbag with a compact inflator, and easy to manufacture.

Abstract: An air bag apparatus, includes: an inflator; an air bag having a corner portion that is projectable radially outwardly and a guide portion that is provided on a back side of a surface to face an occupant of the vehicle; and a strip that is disposed in an interior of the air bag so that a deployment shape of the air bag is controlled by virtue of a tensile force acting on the strip. The strip has one end that is fixed to the corner portion. The air bag has a mounting portion at which the other end of the strip is fixed. The strip is arranged to pass through the guide portion slidably to be fixed to the mounting portion at the other end thereof.

Abstract: An automotive air bag device has a panel, a folded bag installed in a deeper portion behind the panel, a cover provided in the panel and a connecting member that connects a vehicle body side with the cover. The air bag is inflated by virtue of a gas pressure to push open the cover provided so that the air bag deploy into a passenger compartment, the cover is mounted in the panel so as to be separated from the panel when the air bag is inflated and the connecting member controls a protrusion of the air bag into a passenger compartment.

Abstract: By disposing external straps 36 to 38 which are passed through a tubular member 34 which passes through an air bag 21 in a tunnel-like fashion to open in side surfaces of the air bag 21 are disposed on an outer circumference of the air bag 21 and controlling the deployment shape of the air bag 21 by the external straps 36 to 38 so disposed, the occupant restraining performance of the air bag can effectively be enhanced.

Abstract: Three apex portions of a triangular air bag 32 are folded toward a central portion of the air bag, respectively, so that the respective apex portions and a retainer are coupled together by a restricting member 39, and thereafter, the air bag 32 is folded up into an appropriate shape. In an earlier stage of deployment of the air bag 32, the inflation of the air bag 32 to its maximum capacity is restricted by the restricting member 39, whereby the air bag 32 is allowed to inflate quickly to a capacity which is smaller than its maximum capacity, thereby making it possible to get the air bag 32 ready for restraining an occupant. In a later stage of deployment of the air bag 32 that occurs thereafter, when an internal pressure of the air bag 32 reaches or exceeds a predetermined value, the restricting member 39 breaks or extends.

Abstract: A restricting member 39 disposed along an outer surface of an air bag 32 restricts an axial inflation of the air bag 32 in an earlier stage of deployment of the air bag 32, and in a later stage of deployment, the restricting member 39 allows for the inflation of the air bag 32 to its maximum capacity through breakage of brittle portions 41b. In the deployment process of the air bag 32, since vent holes 37b formed in a base fabric 37 of the air bag 32 are closed by the restricting member 39, the leakage of gas from the vent holes 37b is prevented to thereby enable a quick deployment of the air bag 32. Then, when the brittle portions 41b on the restricting member 39 break, the vent holes 37b are opened.

Abstract: For improving horn switch operability, an air bag apparatus 4 supports the side wall 26b of the cover body 26 and is movable back and forth on the outer periphery of the surrounding wall 24 of the base plate 24. Hook 24h protrudes from the surrounding wall 24b and is locked onto lock receiving portion 26h of the side wall 26b, thereby regulating the moving range of the cover body 26. Bracket 35 is mounted on the under surface of the covering portion 26a and is positioned at each of the spokes 7. A movable first contact 36e, 136e is mounted on the bracket 35. A fixed contact support portion 31 is provided on the outer peripheral surface of the side wall 24b of the base plate 24 to protrude therefrom or support 131 in the shape of a pillar is provided integrally to protrude from the core metal 7a of the spoke 7. A fixed second contact 31d, 131d that is opposed to the movable contact 36e, 136e is provided to oppose the movable contact 36e, 136e.

Abstract: For improving horn switch operability, an air bag apparatus 4 supports the side wall 26b of the cover body 26 and is movable back and forth on the outer periphery of the surrounding wall 24 of the base plate 24. Hook 24h protrudes from the surrounding wall 24b and is locked onto lock receiving portion 26h of the side wall 26b, thereby regulating the moving range of the cover body 26. Bracket 35 is mounted on the under surface of the covering portion 26a and is positioned at each of the spokes 7. A movable first contact 36e, 136e is mounted on or from the bracket 35. A fixed contact support portion 31 is provided on the outer peripheral surface of the side wall 24b of the base plate 24 to protrude therefrom or support 131 in the shape of a pillar is provided integrally to protrude from the core metal 7a of the spoke 7. A fixed second contact 31d, 131d that is opposed to the movable contact 36e, 136e is provided to oppose the movable contact 36e, 136e.

Abstract: An air bag apparatus for side crash, includes an acceleration sensor, an inflater and an air bag. The acceleration sensor detects acceleration in a side direction larger than a predetermined value to generate a detection signal. The inflater generates a gas in response to the detection signal. The air bag is folded initially, and expands with the gas. The air bag includes a main section and a protrusion section which is provided at a tip portion of the main section such that an inner space of the protrusion section is connected with an inner space of the main section. The protrusion section has at least one opening from which the gas is spouted.