| 摘要 |
The armature has windings supported by a core mounted on a shaft. The windings and the wires connecting the windings to a commutator are encapsulated in an insert-molded body of plastic, typically nylon. A ring having radially inwardly extending arms (33) equal in number to the number of commutator slots is mounted on the commutator. The arms are lcoated in respective slots between the commutator segments and are stiff enough to block flow of plastic material along the slots during insert molding of the body of plastic.
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