Electric machine with end ring and supporting tab
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United States of America Patent
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Mar 18, 2014
Grant Date -
May 16, 2013
app pub date -
Nov 16, 2011
filing date -
Nov 16, 2011
priority date (Note) -
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Abstract
An electric machine with a stator and a rotor. The rotor core is formed by a stack of laminations with the laminations being generally planar and oriented substantially perpendicular to the rotational axis. One of the laminations includes an axially projecting tab. An electically conductive end ring is located at an axial end of the rotor core and is in communication with a plurality of axially extending conductor bars on the rotor core. The tab is coupled with the end ring and resists a portion of the centrifugal forces acting on the end ring during rotation of the rotor. A plurality of such tabs may be used to provide support to the end ring. A method of manufacture is also disclosed.
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