| 摘要 |
PROBLEM TO BE SOLVED: To prolong a service life of a belt with a groove, and reduce noise and vibration in use.SOLUTION: On at least one surface of front and back surfaces, a plurality of rib treads 12 extending along a belt longitudinal direction is included so as to be arrayed in parallel with each other in a belt width direction. Each rib thread 12 includes a plurality of lateral grooves 15 traversing the rib thread 12 in the belt width direction. The lateral grooves 15 of the rib 12 adjacent to each other in the belt width direction are a belt 10 with a groove set at a different position along the belt longitudinal direction. The interval of the lateral grooves 15 to the belt longitudinal direction in one rib thread 12 is set by a ratio obtained by combining integers having coprime relationship over the entire length of the belt.SELECTED DRAWING: Figure 1 |
