Delphi Technologies, Inc.

Dynamit Nobel Gmbh Explosivstoff-und Systemtechnik

Harald Frank

Anton Bretfeld

Uwe Brede

Uwe Albrecht

Jurgen Knauss

Jiang Zhang

Eduard Berenz

Jürgen Knauss

Josef Storath

Claus-Werner Deutschmann

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.

Triggering device

The invention relates to a pyrotechnic detonator with an igniter support of plastic, which bears an ignition element. A cylindrical metal housing is fastened to the igniter support, into which the ignition reaches. A booster charge is arranged in the metal housing. To improve seal tightness and lower the manufacturing costs, for mechanical support a metal insert is integrated into the igniter support, the metal insert being encased by the plastic of the igniter support.

Pyrotechnic detonator with an igniter support of plastic with an integrated metal insert

An igniter element has two contacts ( ) which are on the contact side of a support body ( ), and which are connected via a resistance element ( ). By current feed to the contacts ( ), a primer mix ( ) is ignited on one active side of the support body ( ). The support body ( ) is placed in a fixing device ( ), whereby the former is fitted with at least one stop spring ( ) which catches on a stop shoulder ( ) of the holding device. Furthermore, the support body ( ) has a recess ( ) on the front-side in the region of the stop spring ( ), which recess is open in the direction of the active side. After igniting the primer mix ( ), pressure builds up on the active side, so that the outer surface ( ) of the stop spring ( ) is pressed against the inner surface of the fixing device ( ).

Ignition element, in particular for pyrotechnic mixtures

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Furth, Germany

Harald Frank