To provide an endless belt for transmission for reducing noise of the endless belt for a transmission.
As a result of simulation concerning noise by changing many length ratios of different pitches and many ratios of the number of long pitches to the total number of pitches of the belt, it is understood that overall noise is reduced together with primary, secondary, and tertiary peak noise when changing difference in long and short pitches from a small value to a large value and that overall noise is reduced in a specific scope of ratio of the number of long pitches to the total number of pitches. Based on these knowledge, a link plate has a link plate having long pitch and a link plate having short pitch defined by distance between adjacent joint pins, the long pitch has length 1.1 times or more and 1.3 times or less the short pitch, and the number of long pitches in the endless belt is 30% or less of the total number of pitches to realize the endless belt and the continuously variable transmission capable of reducing noise.
SHIRAI HISANORI
JPH10122307A | 1998-05-15 | |||
JPS61130644A | 1986-06-18 |
WO2005038295A1 | 2005-04-28 |