| 摘要 |
PURPOSE:To prevent the life of electrical contacts from being shortened, by providing a member impregnated with 2-cyclohexyl=cyclohexanol in a case in which electrical contacts are built. CONSTITUTION:A small-sized motor is composed of a rotor core 18 secured to a rotating shaft 6 and a field magnet 19 fixed to the interior of a motor case 20. This motor is equipped with a brush 13, a commutator segment 4 as electrical contacts and a commutator pedestal 5. At this moment, felt 16 is impregnated with 2-cyclohexyl=cyclohexanol, which is provided in the motor case 20 to create that vapour atmosphere inside the case. Thus, the lubricating action works on the surfaces of the brush 13 and the segment 4, so that the abnormal abrasion of the slidingly contacted surface can be prevented.
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