摘要:
A non-welded pyrotechnic gas-generating inflator apparatus which comprises: a domed diffuser member, open at one end; a closure plate member sealing the open end of the diffuser member, the members being mechanically sealed by rolling a peripheral lip portion of the diffuser member over the outer circumference edge of the closure plate member at an angle of about 180 degrees to a remaining lateral wall portion of the diffuser member, and inserting a locking ring member against a bottom surface of the closure member within the periphery of the rolled lip, the locking ring being configured to engage an inner terminal edge portion of the lip, thereby forming a sealed inflator housing; a sufficient amount of a combustible gas generant material within said housing to produce, upon the combustion thereof, a volume of a gaseous product sufficient to substantially inflate an automobile air bag within about 30-60 milliseconds; a combustion initiating device positioned within the housing adjacent the gas generant and a filter assembly for filtering the combustion product prior to its discharge from the inflator, the filter assembly circumferentially surrounding the gas generant within the housing. In fabricating the inflator, the filter assembly is simply lowered into position within the diffuser and the propellant is lowered into the filter cavity. Subsequently, the closure member is mated to the open end of the diffuser and the lip of the diffuser is rolled over the outer edge of the closure by a rotating mechanical head in the area where they overlap to form a seal therebetween.
摘要:
A Restorable Vehicle Occupant Safety System to replace present pyrotechnic airbag systems. The system is comprised of an air pressure storage vessel 21 that is fluidly connected to an air distribution manifold 36, electronic sensors that preclude an impending crash, valves which are sensor activated to inflate airbags for driver, passenger, knee bolster, side impact, and rollover units as well as seatbelt pre-tensioning units. The present system will safely deploy the airbags in a substantially safe increment of time before a crash condition and restore the airbags to their original position in the event the crash condition does not occur.
摘要:
A modularized aspirating/venting motor vehicle passenger passive restraint assembly. A first embodiment utilizes two separate inflator units lockingly engaged within a stamped mounting plate which, in turn, is installed within an outer base plate. Both plates comprise a lower depending skirt portion defining an aperture through a lower portion of the corresponding plate. These apertures are located in substantially vertical alignment when the mounting plate is seated within the base plate. An elongated conduit permits a reciprocal fluid flow between the interior of the module and the ambient atmosphere. A first end of the conduit is inserted through the corresponding apertures in the base plate and mounting plate to a location adjacent the inflator units and secured therein by magnaforming the overlapping skirt portions into a groove on the conduit's outer surface. A second end of the conduit extends through an inner structural wall of the vehicle to a location outside of the passenger compartment. A second embodiment of the invention utilizes a single linear, bilateral inflator device having first and second combustion chambers secured at opposite end thereof to a central T-shaped support. The lower leg of the support is grooved to facilitate sealing the inflator to the base plate by magnaforming the base plate skirt into the groove. No mounting plate is required. The elongated conduit is releasably attached to a terminal end of the lower support leg by a fitting and extends out of the vehicle passenger compartment to permit fluid communication with the ambient atmosphere.
摘要:
A linear bilateral inflator module in which the inflator component of the module has two opposed cylindrical combustion chambers mounted in a horizontal plane at either end of the inflator. These chambers are joined to and supported by a central T-shaped inflator housing containing an ignitor for initiating combustion of the propellant within the inflator. The lower leg of this central section is configured as a tubular extension which may optionally be joined to a separate conduit member adapted for permitting a reciprocal fluid flow into and out of the air bag through the inflator. The extension also serves as a point of attachment for an outer surrounding base plate assembly. A bead, located within the mouth portion of the air bag, is trapped between the inflator and the base plate during formation of the structural seal between these components such that the inflator is completely enclosed within the bag. The inflator is adapted to provide differing amounts of a gaseous combustion product from each of the combustion chambers by varying the amount or type of propellant stored therein. This arrangement permits the development within the air bag component of the module of two different inflation zones.
摘要:
A self-sealing annular filter component for operation within a housing portion of a pyrotechnic inflator device. The filter comprises: (a) first and second ring-shaped members configured to form an annular frame, at least one of the ring members being provided with at least one tab member formed integrally therewith and extending outwardly therefrom toward the other ring-shaped member to maintain a set spacing between the frame members, and (b) a plurality of filter layers supported upon the filter frame, each filter layer positioned so as to at least partially overlap a preceding underlying filter layer around the entire annular surface of the filter frame. The outer circumferential edge of the ring-shaped frame member is adapted to ensure circular line contact with an inner portion of the inflator housing. This causes the filter to be self-sealing against the housing as a result of outwardly directed hoop stresses produced by activation of the inflator and thus ensures that the gaseous combustion products produced as a result of the inflator firing do not bypass the filter and exit directly into an attached air bag.
摘要:
An inflator (22) for providing inflation fluid () to inflate an inflatable vehicle occupant protection device (14) includes a container (30) storing the inflation fluid under pressure. The container (30) has an outlet passage (80) through which the inflation fluid flows from the container. A rupturable closure member (92) fixed to the container (30) blocks flow of inflation fluid through the passage (80). A support (100) for the rupturable closure member (92) defines a chamber (110) adjacent the rupturable closure member (92). The rupturable closure member (92) has a first portion (122) deformed into the chamber (110) by the pressure of the inflation fluid and a second ring-shaped portion (124) encircling the first portion (122). An initiator (98) ruptures the closure member (92) when actuated by shearing the first portion (122) from the second portion (124).
摘要:
A motor vehicle modularized airbag assembly adapted for facilitating an aspirating flow of ambient atmosphere through the module and into the air bag to facilitate the inflation thereof and thereafter so as to vent the contents into the surrounding atmosphere. The assembly comprises a pyrotechnic inflator device; and inflatable air cushion in contact relation thereto; a retainer member for facilitating a locking engagement between the air cushion and the inflator and a mounting plate comprising a plurality of stepped levels for receiving the inflator, the air cushion and the retainer member in operative association, as well as a plurality of projecting members formed integral with a lower surface thereof to facilitate the aspirating and venting effect. The assembly additionally comprises an elongated conduit extending rearwardly from the mounting plate, through the vehicle's steering column at least to an aperture in the firewall thereof and optionally beyond, so as to direct the contents of the air bag out of the vehicle's passenger compartment upon deflation of the bag.
摘要:
An airbag module comprising a pyrotechnic inflator device; an inflatable air cushion operatively associated therewith; a retainer for lockingly engaging the air cushion to the inflator and a mounting plate configured and adapted for securing the inflator, the air cushion and the retainer in operative association. A variety of inflator embodiments may be incorporated into the module assembly but each requires, along at least a portion of the housing thereof, a rounded arcuate surface configured for engagement with the retainer upon the formation of a structural seal between the mounting plate and the retainer. This structural seal is created by magnaforming a portion of the mounting plate into a corresponding open groove upon the retainer. The module is thus fabricated by positioning the inflator upon the mounting plate; lockingly engaging the air cushion and the retainer; lowering the retainer/cushion assembly over the inflator and magnaforming the wall of the mounting plate into the groove on the surface of the retainer.
摘要:
A motor vehicle modularized airbag assembly adapted for facilitating an aspirating flow of ambient atmosphere through the module and into the air bag to facilitate the inflation thereof and thereafter so as to vent the contents into the surrounding atmosphere. The assembly comprises a pyrotechnic inflator device; an inflatable air cushion in contact relation thereto; a retainer member for facilitating a locking engagement between the air cushion and the inflator and a mounting plate comprising a plurality of stepped levels for receiving the inflator, the air cushion and the retainer member in operative association, as well as a plurality of projecting members formed integral with a lower surface thereof to facilitate the aspirating and venting effect. The assembly additionally comprises an elongated conduit extending rearwardly from the mounting plate, through the vehicle's steering column at least to an aperture in the firewall thereof and optionally beyond, so as to direct the contents of the air bag out of the vehicle's passenger compartment upon deflation of the bag.
摘要:
An apparatus 10 for inflating a vehicle occupant restraint such as an air bag includes a gas source 14 having an axis 50 and a quantity of gas 12 therein. An outlet 30 in the gas source establishes axial flow of gas from the gas source. A flow control member 40 disposed in the path of gas flow establishes radial and circumferential flow of gas to remove particles from the flowing gas by centrifugal force. The a flow control member includes at least one circumferentially extending passage 72 for producing centrifugal force to remove particulate matter from gas flowing in the passage.