Patent ID: 9212718
Filing Date: 2015-12-15
Classification: F16F

Abstract:
1. An adjustable damping valve for a vibration damper comprising: a valve body; a housing having a stepped opening in which the valve body is guided to be axially movable by a guide sleeve and a shoulder which is directed radially outward, wherein the valve body has a pressure-loaded surface in a direction of a valve seat surface and a contact surface between the valve body and the valve seat surface, the pressure-loaded surface acts in a lifting direction of the valve body and is impinged by an incident flow of a damping medium from a through-opening inside a cross section limited by the valve seat surface, and a surface that is operative with a diameter of the guide sleeve that is loaded by pressure in a closing direction formed by a rear side of the valve body; at least one valve spring and an actuator each configured to have respective forces that act on the valve body; an additional surface of the valve body that is pressure-loaded by the damping medium by the incident flow on the valve body via the through-opening in the closing direction of the valve body, a first channel arranged between the through-opening and a backside of the valve body; and a second channel arranged in the valve body that connects the additional pressure-loaded surface to the through-opening wherein the additional pressure-loaded surface is formed by the shoulder of the valve body facing radially outward.