REDUCTION GEAR, AND ELECTRIC POWER STEERING DEVICE
PROBLEM TO BE SOLVED: To provide a reduction gear capable of elongating a service life of a worm wheel by suppressing temperature rise of a tooth surface caused by friction by properly reducing a frictional coefficient in sliding between tooth surfaces by lubrication with an oil film, as a continuou...
Gespeichert in:
1. Verfasser: | |
---|---|
Format: | Patent |
Sprache: | eng |
Schlagworte: | |
Online-Zugang: | Volltext bestellen |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
Zusammenfassung: | PROBLEM TO BE SOLVED: To provide a reduction gear capable of elongating a service life of a worm wheel by suppressing temperature rise of a tooth surface caused by friction by properly reducing a frictional coefficient in sliding between tooth surfaces by lubrication with an oil film, as a continuous oil film can be formed between the tooth surfaces of a worm and the worm wheel by surely preventing grease shortage only by applying a small amount of grease without complicating a structure, and to provide an electric power steering device having low steering torque and having high operation feeling.SOLUTION: A reduction gear 48 includes: a worm 11 and a worm wheel 12 engaged with each other; and a housing 5 accommodating the worm and the worm wheel, and is filled with grease having a viscosity of 0.3 Pa s or more and 2 Pa s or less at 100°C in a shear rate of 100 s. An electric power steering device includes: the reduction gear 48. |
---|