DEVICE AND METHOD FOR CONTROLLING A VOLUME FLOW OF A STORED PRESSURIZED MEDIUM FOR THE PURPOSE OF ACTIVATING AN IMPACT PROTECTION DEVICE AS WELL AS A DEVICE FOR ACTIVATING AN IMPACT PROTECTION DEVICE

摘要

An activation device for a protection device includes: a body with a chamber that has, respectively at first and second ends, a medium inlet opening to a medium storage and a valve opening, and an outlet opening for discharging the medium into the protection device between the first and second ends; a valve for opening and closing the valve opening for passage of the medium; and a piston that (a) includes a passage along a main extension axis, from a first surface thereof adjacent to the medium inlet opening, to a second surface thereof, larger than the first surface and adjacent to the valve opening, and (b) is movable in the chamber by the medium and as a function of the control valve position between a position in which the at least one outlet opening is closed and a position in which the at least one outlet opening is opened.

主权项

1. A device for controlling a volume flow of a medium for activating an impact protection device, the device comprising:
a valve body including (a) a chamber in the valve body, (b) a medium inlet opening, at a first end of the chamber, from the chamber to a medium storage, (c) a control valve opening, at a second end of the chamber, and (d) a first outlet opening, between the first end and second ends, for discharging the medium into the impact protection device; a control valve for opening and closing the control valve opening for a passage of the medium; and a control piston including therein, and along a main extension axis thereof, a passage opening from a first active surface of the control piston to a second active surface of the control piston, wherein:
the first active surface is adjacent to the medium inlet opening;the second active surface is adjacent to the control valve opening and is larger than the first active surface; andthe control piston is movable in the chamber, with the aid of the medium and as a function of a position of the control valve, between an initial position, in which the first outlet opening is closed by the control piston, and an activation position, in which the first outlet opening is opened by the control piston.