Apparatus and method for controlling a flow of a medium stored under pressure to activate an impact protection device as well as a device for activating an impact protection device

摘要

It is a device (110) for controlling a flow of a medium for activating an impact protection device is proposed. The device (110) has a valve body (120) with a in the same shaped chamber (130) which are connected to a first end, a media inlet opening (122) to a medium reservoir (102), on a second end a control valve opening (132) and between the first end and the second end of at least a drain opening (124) for draining of the medium in the impact protection means comprises. Also, the device (110) a control valve (150) for opening and closing of the control valve opening (132) for a passage of the medium to. In addition, the apparatus (110) of a control piston (140) with a along a main extension axis of the same shaped passage opening (142) of one of the media entry opening (122) adjacent first active surface (144) of the control piston (140) to one of the control valve opening (132) adjacent, second active surface (146) of the control piston (140) on. In this case, the first active surface (144) is smaller than the second active surface (146). In this case, the control piston (140) in the chamber (130) of the valve body (120) by means of the medium and as a function of a position of the control valve (150) between a basic position, in which the at least one drain opening (124) by means of the control piston (140) is closed, and a movable locking position, in which the at least a drain opening (124) by means of the control piston (140) is opened.