CPC F15B 13/0402 (2013.01) [F15B 13/0433 (2013.01); F16K 37/0041 (2013.01); H01F 7/08 (2013.01); H01F 27/24 (2013.01); H01F 27/28 (2013.01); H01F 27/306 (2013.01); H01R 13/405 (2013.01); H05K 1/181 (2013.01); H05K 7/1427 (2013.01); F15B 2013/0409 (2013.01); F15B 2211/30 (2013.01); F15B 2211/329 (2013.01); F16K 31/02 (2013.01); F16K 31/0613 (2013.01); F16K 37/0033 (2013.01); H05K 2201/10053 (2013.01); H05K 2201/10151 (2013.01); Y10T 137/5987 (2015.04); Y10T 137/8242 (2015.04)] | 12 Claims |
1. A pilot device for a hydraulic directional valve, comprising:
a housing configured to be mounted externally on the hydraulic directional valve via a mounting surface, the housing equipped with an electrical plug connection that is accessible from the outside;
a pilot valve received within the housing and configured as a cartridge valve having a valve axis, the pilot valve including an electromagnetic actuating device;
a displacement sensor received within the housing, the displacement sensor including a soft iron core, which, in the region of the mounting surface, is coupled for movement to a control spool of the displacement valve so that the soft iron core is linearly movable along a sensor axis;
an electronic circuit board received within the housing;
a fluid feed, a fluid return, a first control connection, and a second control connection (i) defined in the housing in the region of the mounting surface and (ii) fluidically connected to the pilot valve within the housing; and
at least two coils arranged around the soft iron core, the at least two coils combined to form a coil assembly,
wherein the valve axis and the sensor axis are arranged substantially parallel to one another so that the valve axis and the sensor axis define a reference plane,
wherein the electromagnetic actuating device and the coil assembly are arranged adjacent to one another,
wherein the circuit board extends in a plane that is parallel to the reference plane,
wherein, to establish an electrical contact, each of the coil assembly, the electromagnetic actuating device, and the electrical plug connection is either (i) soldered directly to the circuit board or (ii) is in breakable electrical contact with a respectively associated, rigid contact assembly, which is soldered directly to the circuit board.
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