| 摘要 |
A commutator (10, 110, 210) with a reinforcing system comprising a stepped insulating ring (20, 120, 220) with a support piece (22, 122, 222) and a center or flange piece (24, 124, 224) and a metal ring (18,118, 218) which has a rectangular cross-section and is fitted into the stepped shape of the insulating ring such that part of the radial outer surface of the metal ring abuts the radial inner surface of the center or flange piece, and the end inner surface of the metal ring completely abuts the end outer surface of the support piece.
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