| 摘要 |
A commutator comprises a commutator base 10 of insulating material, a plurality of commutator terminals 20 each of which has a terminal portion 21 and a contact portion 22 and a plurality of carbon segments 30 formed on the base and over the contact portions, respectively, of the terminal. Each carbon segment has an inner portion 31 of moulded graphite material adjacent to the base and one or more outer exposed portions 32 containing or formed of sintered graphite. |
