INTERNAL ROTOR MOTOR
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United States of America Patent
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N/A
Issued Date -
Mar 6, 2014
app pub date -
Jul 12, 2012
filing date -
Jul 22, 2011
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
An internal rotor motor, in particular an electronically commutated internal rotor motor, has a multi-pole stator (28) and a rotor lamination stack (37; 52, 54, 56) mounted rotatably relative to said stator; furthermore a central bore is provided in the rotor lamination stack, the rotor lamination stack comprising individual laminations (41) whose respective central openings (47) comprise radially inwardly projecting first portions or tabs (50) into which a rotor shaft (18) is press-fitted, and said central openings (47) comprise, in angular sectors between the first portions (50), second portions (51) that, in the assembled state, are spaced away from the outside of the shaft (18), at least some (axially central) ones of the individual laminations (41) of the rotor lamination stack (52) being arranged with an angular offset from one another.
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