| 摘要 |
<p>The current invention relates to a valve device (1), in particular for tank ventilation in motor vehicles, having a valve housing (6, 7, 8) with an inlet fitting (10) and an outlet fitting (11), having an armature (26) that is provided inside the valve housing (6, 7, 8) and can be moved by means of an electromagnet (22), having a closing body (40) that is connected to the armature (26) and closes a sealing seat (13) of the outlet fitting (11) when the electromagnet (22) is without power and opens it when the electromagnet (22) is supplied with power wherein the free cross sectional area between the inlet fitting (10) and the outlet fitting (11) can be continuously changed, and having a spring element (50) which presses the closing body (40) with a slight pressure against the sealing seat (13). In order to assure a reliable seal of the sealing seat (13) in a simple manner, according to a first embodiment according to the invention, the spring element (50) is comprised of a leaf spring (48) which is connected on the one end to the armature (26) and on the other end to the closing body (40) and furthermore, is pre-stressed against the closing body (40). As an alternative embodiment possibility, a spring element (50) with a spiral spring (49) is proposed, which deforms exclusively in the direction of its longitudinal axis even during the stroke motion of the valve device (1).</p> |
