| 摘要 |
A commutator including a commutator main body having a plurality of commutator pieces and a short-circuit member having a short-circuit conductor for short-circuiting commutator pieces. The short-circuit conductor includes superimposed first and second short-circuit member formation groups. The first short-circuit member formation group is thinner than the second short-circuit member formation group. The first and second short-circuit member formation groups are fixed to each other by crimping projections, which are formed on the second short-circuit member formation group through punching, in a state inserted through holes, which are formed in the second short-circuit member formation group.
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