Method of making an electric machine having an electronics mount secured by an interference fit
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United States of America Patent
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Sep 1, 2009
Grant Date -
Apr 6, 2006
app pub date -
Aug 22, 2005
filing date -
Oct 4, 2004
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A method includes heating a housing of an electric machine to thermally expand the housing, positioning a mount having power and control electronics assembled thereon and in contact therewith in the housing and against an internal stop defined within the housing, and allowing the housing to cool and thermally contract against the mount thereby forming an interference fit between the housing and the mount. The interference fit secures the mount within the housing. The mount and the housing have coefficients of thermal expansion such that the interference fit is maintained across an operating temperature range of the machine. The electric machine may also include a segmented or non-segmented stator within the housing.
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