V-RIBBED BELT, V-RIBBED PULLEY, AND BELT TRANSMISSION DEVICE USING THEM

摘要

PROBLEM TO BE SOLVED: To prevent the occurrence of abnormal noises of a belt transmission device caused by warpage deformation of a V-ribbed belt during the occurrence of misalignment between the V-ribbed belt and a V-ribbed pulley in the belt transmission device provided with the V-ribbed belt composed by integrally forming a plurality of rib parts extended in the belt length direction and arranged in the belt width direction on the lower face of a belt body, into which a core wire is embedded, and the V-ribbed pulley, in which a plurality of rib grooves are formed on the outer peripheral face and the rib parts of the V-ribbed belt are engaged with the rib grooves respectively, as a result, its belt is wound. SOLUTION: A rib pitch Pr' between each end rib part 14a located at both ends in the belt width direction among the rib parts 14 of the V-ribbed belt B and an intermediate rib part 14 adjacent to each end rib part 14a is made smaller than a reference rib pitch Pr. COPYRIGHT: (C)2004,JPO&NCIPI