Thomas Magnete Gmbh

Thomas Zastrau

Marc Leinweber

Jens Krallmann

Harald Geis

René Schulz

Daniel Ferres

Michael Erhard

Juri Buss

Jörg Dr Schneider

Jens Dr Krallmann

Matthias Diehl

Michael Oerter

The invention relates to an electromagnetic valve comprising an electromagnet including a magnet coil, a magnet armature, a pole piece, a magnet yoke and a housing closing the magnetic circuit, and a valve assembly including a valve sleeve, a valve slider and a return spring, wherein the valve assembly is encompassed by the housing in its axial extension. According to the invention, the pole piece consists of an outer magnet pole and the valve sleeve surrounded by the magnet pole, wherein two fluid channels run in an axial direction between the valve sleeve and the magnet pole in fluid-tightly adjacent zones on the circumference of the valve sleeve and/or within the magnet pole, and wherein the valve sleeve has two transverse boreholes which are fluidically connected to the fluid channels and cooperate with control edges of the valve slider according to an axial position of the valve slider.

Electromagnetic valve

Electrohydraulic pilot control means () for a hydraulic device which can be a proportional directional valve, an adjusting pump or an adjusting motor, which pilot control means contains two proportionally acting pressure control valves () and is provided with a control block () which accommodates the hydraulic valve parts () in holes and to which the associated proportional magnets are flange-connected, wherein the proportional magnets have a common electrical plug connection () and wherein the two proportional magnets () are joined to form an assembly by being encapsulated with plastic, the said assembly being fastened to the control block () and, in this case, being precisely oriented relative to the valve components (), which are accommodated in the control block, by means of positioning aids which act perpendicular to the movement direction of armatures.

Electrohydraulic pilot control with two pressure control valves

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Siegen, Germany

Thomas Zastrau