Electromagnetic device, especially for an anti-slip, hydraulic vehicle brake system
AssigneeRobert Bosch GmbH
InventorsGuenter Wolff, Friedrich Megerle, Martin Oehler, Dirk Hofmann
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AssigneeRobert Bosch GmbH
InventorsGuenter Wolff, Friedrich Megerle, Martin Oehler, Dirk Hofmann
Estimating the term…
The invention relates to an electromagnetic device, in particular for a slip-controlled, hydraulic vehicle brake system, having at least a first magnet valve which is closed in its currentless basic position and having at least a second magnet valve which is open in its currentless basic position, the first and second magnet valves being received in receiving bores of a valve block. The invention provides that the first and second magnet valves have structurally identical, one-piece valve housings, in each of which all the magnet valve components are received essentially without any axial protrusion, and that the total length of each of the first and second magnet valves is recessed in the receiving bores of the valve block, and that a nonferromagnetic spacer ring is disposed between a face end, pointing toward the valve seat, of at least one magnet coil and a dividing plane between this magnet coil and the associated pole piece.
In an electromagnetic device (6), having at least one first magnet valve (4), which is closed in its currentless basic position, and having at least one second magnet valve (4a), which is open in its currentless basic position, the first and second magnet valves (4, 4a) having a valve housing (12, 12a) and being received in receiving bores (1, 1a) of a valve block (2) and each having one valve closing member (20, 20a) controlled by a magnet armature (10, 10a), which member is movable relative to a valve seat (28, 28a), carried by a valve seat carrier (30, 30a), and to a pole piece (8, 8a), and one magnet coil (40, 40a) each, which in the electrically excited state cooperates with the magnet armature (10, 10a) in such a way that the first magnet valve (4) is opened and the second magnet valve (4a) is closed, the improvement wherein the first and second magnet valves (4, 4a) have structurally identical, one-piece valve housings (12, 12a), in each of which all the magnet valve components are received essentially without any axial protrusion, and that the total length of each of the first and second magnet valves (4, 4a) is recessed in the receiving bores (1, 1a) of the valve block (2), and that a nonferromagnetic spacer ring (38, 38a) is disposed between a face end, pointing toward the valve seat (28, 28a), of at least one magnet coil (40, 40a) and a dividing plane (41, 41a), which extends between the pole piece (8, 8a) and the magnet armature (10, 10a) of the first and second magnet valve (4, 41).
Dependencies are inferred from the claim text.