To provide a grease composition for lubricating resins which is suitable for the lubrication between a resin member and a metal member and can reduce wear of the resin member than before, and to provide an electric power steering device which exhibits little wear of the resin part of a worm wheel and has good durability.
The grease composition for lubricating resins comprises a base oil which contains at least one of a poly-α-olefin oil, a mineral oil and a highly-purified mineral oil in a proportion of 50 mass% or more of the total base oil, a thickening agent which contains at least one of a metal soap and a metal soap complex in a proportion of 50 mass% or more of the total thickening agent, and at least one of a non-polar wax and a polar wax. The electric power steering device comprises a reduction gear constructed of a resin worm wheel and a metal worm and is lubricated with the grease composition for lubricating resins.
| WO/2009/019909 | STEERING DEVICE WITH VARIABLE STEERING ANGLE |
| JPS62225458 | MOTOR-DRIVEN TYPE POWER STEERING DEVICE |
| JP2005067290 | CONTROL DEVICE FOR ELECTRIC POWER STEERING DEVICE |
NAKATANI SHINYA
MIYAJIMA HIROTOSHI
Hironori Honda
Toshimitsu Ichikawa
Takeshi Takamatsu
Yuriko Hamada
Next Patent: SURFACE-MODIFIED MINUTE DIAMOND ABRASIVE