Device for switching an electrical load circuit operated with high voltage from a voltage source
AssigneeIIE GmbH & Co. KG
InventorEkkehard Kress
Life of this patent
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Abstract
The invention relates to a device for connecting and disconnecting an electrical load circuit, operated at high voltage by a voltage source, in a transportation means that is electrically driven by a drive operated at low voltage. According to the invention, a contact stud (6) is connected to the push rod (11) of a linear drive (2) and the contact stud (6) can be moved into at least two positions in a switch housing (4), wherein the switch housing (4) has, on its internal wall, at least two contact rings (5), one of which is connected to the voltage source (7) and the other is connected to the consumer circuit (8).
Claims8
A device for switching an electrical load circuit operated at high voltage from a voltage source in an electrically powered transportation means by a drive operated at low voltage, wherein a contact stud is coupled to a push rod of a linear drive and has a predetermined breaking point to the push rod, the contact stud being operable to move into at least two positions in a switch housing, wherein the switch housing has at least two contact rings on its internal wall, wherein a first contact ring of the at least two contact rings is coupled to the voltage source and wherein a second contact ring of the at least two contact rings is coupled to the load circuit, wherein the linear drive is a stepping motor and comprises a rotor having a threaded nut for moving the push rod designed as a threaded rod, and the push rod is secured against rotation and the threaded nut against rotation relative to the rotor.
Dependencies are inferred from the claim text.