| 摘要 |
PROBLEM TO BE SOLVED: To provide a commutator motor whose service life can be extended by maintaining an oil film of a commutator even at high-speed rotation associated with structure-miniaturization. SOLUTION: The commutator and a brush are independently sealed in a housing and a lubricant is encapsulated to thereby bring a contact into a state of being always immersed in the lubricant. By employing this configuration, it is possible to prevent the oil film from peeling due to a centrifugal force in driving at high-speed rotation, and obtain the effects of rust prevention of the contact in non-driving and to prevent the lubricant oxidation due to sealing, thereby achieving the structure in consideration of the global environment through the extended service life of the motor. COPYRIGHT: (C)2011,JPO&INPIT
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