Motor vehicle occupant protective device
First Claim
1. A protective device for occupants of a motor vehicle usable with a gas inflatable bag, comprising a pressure vessel for storage of a pressurized gas with an outflow orifice provided in a wall of the pressure-vessel, a closed tripping cylinder filled with a pyrotechnic medium, at least one valve having a pressure-vessel wall piece surrounded by a predetermined breaking point and a piston rod associated operatively with the wall piece and projecting on one side thereof from the closed tripping cylinder for closing the outflow orifice, the piston rod being axially displaceable out of a first end position into a second end position by a piston arranged in the tripping cylinder when the pyrotechnic medium is ignited, wherein the wall piece comprises a wall of a hollow valve block provided with the outflow orifice and an extension projecting into the interior of the valve block, the piston rod having means for impacting the extension and being displaceable in the valve block transversely relative to the extension, and the extension is located in the path of movement of the means for impacting, whereby when the piston is displaced from said first end position to said second end position, said means for impacting impacts said extension, causing said predetermined breaking point to be exceeded.
4 Assignments
0 Petitions
Accused Products
Abstract
A protective device for motor vehicle airbag systems to protect the vehicle occupants utilizes a vessel whose wall piece, which can break out, is configured as part of the wall of a hollow valve block provided with the outflow orifice. The wall piece is equipped with an extension projecting into the interior of a valve block. The piston rod is guided displaceably, transversely relative to the extension in the valve block, and moved by a pyrotechnic propellent charge. The rod serves to break out the wall part and is provided with a collar which, in the event of ignition, strikes against the extension and thus leads not to a violent breaking-out, but to a pivoting of the wall piece before the final breaking-out.
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Citations
24 Claims
- 1. A protective device for occupants of a motor vehicle usable with a gas inflatable bag, comprising a pressure vessel for storage of a pressurized gas with an outflow orifice provided in a wall of the pressure-vessel, a closed tripping cylinder filled with a pyrotechnic medium, at least one valve having a pressure-vessel wall piece surrounded by a predetermined breaking point and a piston rod associated operatively with the wall piece and projecting on one side thereof from the closed tripping cylinder for closing the outflow orifice, the piston rod being axially displaceable out of a first end position into a second end position by a piston arranged in the tripping cylinder when the pyrotechnic medium is ignited, wherein the wall piece comprises a wall of a hollow valve block provided with the outflow orifice and an extension projecting into the interior of the valve block, the piston rod having means for impacting the extension and being displaceable in the valve block transversely relative to the extension, and the extension is located in the path of movement of the means for impacting, whereby when the piston is displaced from said first end position to said second end position, said means for impacting impacts said extension, causing said predetermined breaking point to be exceeded.
Specification