The pyrotechnic actuator (1) comprises a tubular housing (2), which has a pyrotechnic igniter (21) at one end, and also comprises a piston with a flared end (4a) and a piston rod (4). The flared end (4a) of the piston can be displaced in the housing (2), by the igniter (21), from a starting position, adjacent to the igniter (21), into an end position, remote from the igniter (21). At that end of the housing (2) which is directed away from the igniter (21), a single-piece sealing element (5) is provided between the piston rod (4) and the housing (2). The piston rod (4) passes through the sealing element (5). The piston rod has a step (14) in the region of the sealing element (5), wherein the external diameter (13) of the piston rod (4) is smaller on that side of the step (14) which is directed away from the igniter (21) than the external diameter (12) on that side of the step (14) which is directed towards the igniter (21). According to the invention, the sealing element (5) has a corresponding mating step (27), and so the sealing element (5) is seated on the step (14) of the piston rod (4). Axial prestressing thus makes it possible to achieve sealing between the housing (2) and the piston rod (4). The sealing element (5) is preferably ruptured when the actuator is triggered.


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    Title :

    PYROTECHNISCHER AKTUATOR


    Contributors:

    Publication date :

    2024-09-26


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    German


    Classification :

    IPC:    F15B SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL , Druckmittelbetriebene Systeme allgemein / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / F16J Kolben , PISTONS



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