DEVICE FOR PREVENTING TOOTH HAMMERING NOISE OF VEHICLE GEAR SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a device for preventing tooth hammering noise of a vehicle gear system, configured to be installed on a small-diameter gear with a small difference between a shaft diameter and a tip diameter.SOLUTION: The device for preventing tooth hammering noise 22 includes: a small-diameter outer peripheral tooth 28 fixed to a counter shaft 20 of a first speed-reducing gear Mn1, and having a smaller diameter than a tip diameter of the first speed-reducing gear Mn1; a sub gear 36 relatively rotatably provided on a shaft Mva of a second output gear Mv across a gap S with a tooth Mvb of the second output gear Mv, and engaging with the small-diameter outer peripheral tooth 28; and a frictional resistance applying device 44 provided on the shaft Mva of the second output gear Mv for applying friction resistance to the relative rotation of the second output gear Mv of the sub gear 36 for the shaft Mva. Thus, there is no need to bring the sub gear 36 into slide contact with an inner peripheral part of the second output gear Mv, and can be provided on the second output gear Mv with a small difference between a diameter of the shaft Mva and the tip diameter.