Patent ID: 6713935
Filing Date: 2004-03-30
Classification: H02K

Abstract:
An electric rotating machine comprising:a stator including a stator core formed by accumulating and fixing a plurality of stator steel sheets, and stator coils mounted onto said stator core; a rotor having a rotation shaft received within an inner peripheral side of said stator; a frame for receiving said stator therein; and a pair of end brackets for holding said rotation shaft of said rotor via bearings rotatably, a respective end bracket of said pair of end brackets being fixed on opposite ends of said stator by through bolts inserted into through bolt holes formed therein, and each of said end brackets having a plurality of two kinds of bolt holes; wherein each of said stator steel sheets constructing said stator core has a substantially constant width in a radial direction over an entire periphery thereof so as to function as a magnetic circuit, and corner portions formed with through bolt holes to be inserted with the through bolts therein; and wherein said frame is a molded frame of resin, which is lighter in specific gravity than a specific gravity of steel and covers an outer shape of said stator therewith so that said frame has an outer shape which is symmetrical in one or more symmetrical axes with respect to said end brackets.