Patent ID: 7314107

Claim:
An air cleaner structure to be mounted to a vehicle comprising: an air-intake duct for introducing outside air provided at an inlet port of a cleaner case having an element for cleaning air integrated therein; and a plurality of partitions for partitioning the interior of the duct, at least one of said partitions being inclined with respect to a longitudinal axis of the vehicle body forming a first flow channel between the inclined partition and another of the partitions disposed on a first side of the air-intake structure, and also forming a second flow channel on an opposite side to the inclined partition, wherein a cross-sectional area of the first flow channel is narrowed to form a narrowing passage in a direction of an air flow, and wherein a cross-sectional area of the second flow channel is widened to form a widening passage in the direction of the air flow, the narrowing passage and the widening passage overlapping each other when viewed from a side of the vehicle.