A vehicle hood assembly comprising an inner hood 42, an outer hood 44 fixed thereto and an inflatable chamber 78 disposed in a gap between the two hoods and made of thermoplastic elastomer. The two hoods are preferably connected via adhesive 50, the connection being frangible and breaking when the chamber is filled with gas by an inflator 82, the outer hood being thus pushed upwards, whereby increased spacing is provided between the outer hood and underlying hard engine parts and the force of impact in a pedestrian-vehicle collision is greatly absorbed by the inflated chamber. The inflatable chamber of the deployable device 70 may be annular and arranged close to the perimeter of the hoods (see fig. 4), preferably bonded to one of them. The inflator is preferably actuated by a controller (94, fig. 7) when the latter receives a signal from an impact sensor (92, fig. 7) located e.g. in the vehicles front bumper. According to a second aspect of the invention, the vehicle hood assembly comprises an inflatable chamber made up of moulded top and bottom panels connected by sides, preferably pleated when the device 70 is in an undeployed position and extended when deployed.
Vehicle hood assembly with deployable pedestrian protection
2017-08-30
Patent
Elektronische Ressource
Englisch
IPC: | B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR |
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