Magnetic valve

US6268784A · kind A · utility

Assignee

• Continental Teves AG & Co. OHG · DE

Inventors

• Hans-Jörg Feigel · Rosbach, DE
• Manfred Rüffer · Pocking, DE
• Michael Germuth-Loffler · Aschaffenburg, DE
• Wolfgang Schieblich · Weiterstadt, DE

Key dates

• Filing date: Oct 20, 1999
• Grant date: Jul 31, 2001
• Expiry date: Oct 20, 2019

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01F2007/1661
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

The present invention discloses a magnetic valve for liquid and gaseous working media, in particular for hydraulic brake systems in automotive vehicles, which includes a first cylindrical housing part that is encompassed on its outside by a magnetic coil and has a cylindrical recess inside which extends in an axial direction to accommodate and guide an axmature, a tappet which is displaceable by the armature in an axial direction in opposition to a resetting spring, a second cylindrical housing part which is arranged coaxially to the first housing part and includes a cylindrical recess extending in an axial direction, the said recess being in connection to outside valve ports and in which a valve seat cooperating with the tappet is arranged. According to the present invention, the first and second housing parts form a housing which is made in one piece of a ferromagnetic material and encompasses the armature over at least part of its longitudinal extension in the shape of a sleeve whose walls are sufficiently thick to reduce the magnetic short-circuit but are not thicker than required to reliably accommodate mechanical stresses.