Electromagnetic brake or clutch
AssigneeKeb Automation KG
InventorJan Berent Fliedner
Life of this patent
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Abstract
The disclosure relates to an electromagnetic brake or clutch having an electromagnet, a permanent magnet and an armature plate interacting with the electromagnet and the permanent magnet, which armature plate is arranged on a hub body so as to be non-rotatable but nevertheless axially displaceable, the electromagnet having a magnet housing and a coil received therein, wherein the magnet housing has, on the armature plate side, an outer ring body providing an external pole and an inner ring body providing an internal pole, characterized in that the inner ring body carries the permanent magnet on the armature plate side and that a web which serves as magnetic flux bridge and connects the inner ring body to the outer ring body is disposed between the inner ring body and the outer ring body.
Claims9
An electromagnetic brake or clutch having an electromagnet, a permanent magnet and an armature plate interacting with the electromagnet and the permanent magnet, which armature plate is arranged on a hub body so as to be non-rotatable but nevertheless axially displaceable, the electromagnet having a magnet housing and a coil received therein, wherein the magnet housing has, on the armature plate side, an outer ring body providing an external pole and an inner ring body providing an internal pole, wherein the inner ring body carries the permanent magnet on the armature plate side and that a web which serves as magnetic flux bridge and connects the inner ring body to the outer ring body is disposed between the inner ring body and the outer ring body, whereby the outer ring body projects axially beyond the inner ring body towards the armature plate, wherein the permanent magnet carried by the inner ring body terminates flush with the outer ring body on the armature plate side.
An electromagnetic brake or clutch having an electromagnet, a permanent magnet and an armature plate interacting with the electromagnet and the permanent magnet, which armature plate is arranged on a hub body so as to be non-rotatable but nevertheless axially displaceable, the electromagnet having a magnet housing and a coil received therein, wherein the magnet housing has, on the armature plate side, an outer ring body providing an external pole and an inner ring body providing an internal pole, wherein the inner ring body carries the permanent magnet on the armature plate side and that a web which serves as magnetic flux bridge and connects the inner ring body to the outer ring body is disposed between the inner ring body and the outer ring body, whereby the outer ring body projects axially beyond the inner ring body towards the armature plate, wherein the permanent magnet and/or the outer ring body provides a friction surface interacting with the armature plate on the armature plate side.
Dependencies are inferred from the claim text.