| 摘要 |
PROBLEM TO BE SOLVED: To provide a metal graphite brush in which any spark discharge is hardly produced. SOLUTION: A metal graphite brush 1 is made up of a sintered body having pores 19 on its surface and interior, and feeds a coil 17 in such a manner that the coil 17, wound around a core 9 provided on a rotor 2 of a motor, comes slidably into contact with an electrically connected commutator8 at a slidably contacting surface. Emulsion containing liquid that is vaporized in response to temperature rise due to contacting with the commutator 8 when a motor is operating, and solvent having a higher boiling point than that of liquid as well as causing the liquid to disperse is included within the pore 19. COPYRIGHT: (C)2007,JPO&INPIT
|
