UNBALANCED EXCITING FORCE REDUCING STRUCTURE OF PLANETARY GEAR MECHANISM

摘要

PROBLEM TO BE SOLVED: To provide an unbalanced exciting force reducing structure of a planetary gear mechanism capable of suppressing the vibration level of a unit by suppressing the eccentricity of a carrier to reduce an unbalanced excitation force.;SOLUTION: In this planetary gear mechanism 1 disposed in a power transmission path and having, as a rotary element, a sun gear 2, a ring gear 3, pinions 4, and a carrier 5 supporting the pinions 4, the sun gear 2, the ring gear 3, and the pinions 4 are formed of helical gears. The planetary gear mechanism has a centering mechanism (tapered needle bearing 10) for converting a thrust force Fth generated during the power transmission to an axial radial force and transmitting the radial force to the carrier 5.;COPYRIGHT: (C)2009,JPO&INPIT