摘要:
A pressurized gas inflator suited for side impact airbags comprises an elongated cylindrical bottle having a closed end and an open end defining an outlet opening. A diaphragm is sealed across the open end of the bottle to form a chamber containing pressurized gas. A cup-shaped diffuser also has an open end secured to the open end of the bottle with the periphery of the diaphragm therebetween. A squib is mounted in the diffuser for rupturing the diaphragm. An enhanced squib with 300-400 milligrams of ZPP is used in one disclosed inflator and an augmented directional initiator is used in another disclosed inflator. The enhanced squib and augmented directional initiator provide heating to offset adiabatic cooling of the gas. The diffuser defines outlet ports for delivering the inflation gas. The cylindrical bottle has a mounting flange on its closed end, and the mounting flange may be an end cap with a radially extending flange. The diameter of the bottle may be necked down at the open end defining the outlet opening. The squib may be mounted through the wall of the diffuser, with the squib terminals exposed for plug connection.
摘要:
Apparatus for inflating an inflatable device, methods for inflating an inflatable safety device and a method of manufacturing an apparatus for inflating an inflatable device are provided having a fuel containment assembly to contain a fuel in the form of a fluid. The fuel, upon proper initiation, is burned to produce gas used in the inflation of the inflatable device.
摘要:
A heat-enhanced boosted inflator for a vehicle airbag includes a housing defining a storage chamber having compressed inflation gas therein and a heating cup mounted to the housing and defining a portion of a gas delivery path to the airbag. The heating cup contains a heat-producing material and the gas flows through the heat-producing material to heat-expand it. One heat-producing material is thermite (Al+FeO.sub.3) and ignitor means initiate its reaction. A cylindrical heating cup provides an annular heating chamber containing the heat-producing material and further defines an outlet plenum containing inflation gas which is released initially for a "soft" onset of inflation.
摘要:
A hybrid inflator for an inflatable restraint system has a center frame and two tubular end caps forming an elongated housing defining a chamber storing pressurized inert gas. Unit means for heating and delivering the stored gas are mounted in the center frame and positioned to deliver inflation gasses centrally with respect to the elongated housing. In a two unit embodiment, one unit includes a squib and a pyrotechnic gas generant, and the other unit defines an outlet orifice and baffle plate. In another two unit embodiment, the second unit includes an essentially non gas-producing heating composition which, when activated, heats and expands the pressurized gas. In a third embodiment, a unit includes heating material and ignition means and defines the outlet orifice. The center manifold is extruded metal stock with two opposing flat surfaces adapted to mount one or more units.
摘要:
An improvement in an air bag system for a motor vehicle relating to a multiple level fluid fueled air bag inflator and method of operation thereof are provided. Such a multiple level inflator includes a stored gas chamber, a combustion chamber wherein, upon actuation, a fluid fuel and an oxidant are burned, an opener to open the stored gas chamber and an initiator device to initiate the burning of the fluid fuel and oxidant in the combustion chamber. Various performance levels can be obtained through the proper selected actuation and sequencing of actuation of the opener and the initiator device.
摘要:
An initiator suitable for use with airbag passive restraint systems and which does not use pyrotechnic materials is disclosed. The initiator provides an electrically actuated igniter which ignites an adjacently stored non-pyrotechnic fluid combustible material which may comprise a mixture of a fluid fuel and a fluid oxidizer, a fluid monopropellant or a fluid exothermically decomposable material. A sub-assembly of the non-pyrotechnic initiator with a fuel containment chamber and inflators which use the non-pyrotechnic initiator are also disclosed.
摘要:
An improved adaptive output inflator is provided wherein inflator performance, such as measured by inflator gas output, can be appropriately varied and selected by appropriately varying and selecting the operational oxidant composition of the inflator.
摘要:
An inflator apparatus for inflating an inflatable device and a method are provided wherein a combination of a dissociative gas source material and at least one unreactive dissociation reaction modifier is stored at least partially in liquefied form with the reaction modifier effective to moderate at least one of the temperature and concentration of the at least one gas source material upon the dissociation of at least a portion of the at least one gas source material.
摘要:
An inflator apparatus for inflating an inflatable device and a method are provided which utilize a burst disk arrangement which results in a sequential opening regime such as may desirably provide a form of the above-described S curve inflation performance behavior without necessitating the use of or reliance on mechanical opening devices such as projectiles or piston members.
摘要:
A unitary storage structures for the fluid components of a inflator of a vehicular airbag passive restraint system. The unitary storage structures facilitate the storage, testing, transportation and assembly of such components in the inflator. Advantageous methods of filling the storage chambers and of testing the filled structures for leaks prior to their transportation and assembly into the inflator housing are also disclosed.