Triggering device
First Claim
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1. An actuation unit for moving a head rest in a vehicle seat and comprising a triggering device, said triggering device comprising:
- a housing body defining a chamber,a pyrotechnic gas generator within said housing body and adapted for producing a pressurized gas within said chamber,a piston extending through said housing body and having an inner end and an outer end, said piston being movable in response to said pressurized gas within said chamber, anda triggering member adapted to engage the outer end of the piston and movable from a blocking position to a release position in response to movement of said piston by said pressurized gas,wherein said piston comprises a bore extending from said inner end to said outer end for releasing said pressurized gas.
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Abstract
The present invention relates to a an actuation unit having a triggering device for the moving of a headrest into a predetermined position, with the triggering device comprising a pyrotechnic gas generator and a triggering member which is movable from a blocking position into a release position.
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Citations
6 Claims
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1. An actuation unit for moving a head rest in a vehicle seat and comprising a triggering device, said triggering device comprising:
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a housing body defining a chamber, a pyrotechnic gas generator within said housing body and adapted for producing a pressurized gas within said chamber, a piston extending through said housing body and having an inner end and an outer end, said piston being movable in response to said pressurized gas within said chamber, and a triggering member adapted to engage the outer end of the piston and movable from a blocking position to a release position in response to movement of said piston by said pressurized gas, wherein said piston comprises a bore extending from said inner end to said outer end for releasing said pressurized gas. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification