Patent ID: 7954585
Filing Date: 2011-06-07
Classification: B60G,B62K

Abstract:
1. A swing-arm-type suspension device for a vehicle, comprising: a vehicle body frame, said vehicle body frame including a main frame and a seat rail which extends obliquely rearwardly and upwardly from a rear portion of the main frame; a swing arm, said swing arm being swingably mounted on a pivot shaft provided on a vehicle body frame side thereof; a cushion unit, one end of the cushion unit being pivotally mounted to the swing arm, another end of the cushion unit being mounted on the swing arm and the vehicle body frame via a cushion support link mechanism; a rear wheel, said rear wheel being supported on an end portion of the swing arm; and a rolling support link mechanism that transmits rolling in the lateral direction of the vehicle about ground contacting portions of a front wheel and the rear wheel to the swing arm from the vehicle body frame, said rolling support link mechanism, wherein said rolling support link mechanism includes a first support link pivotably mounted to the swing arm at a first end thereof and a second support link pivotably mounted at a first end thereof to a second end of the first support link, a second end of said second support link being pivotably mounted to the seat rail, the mounting portion of the second end of the second support link and the seat rail being above said one end of the cushion unit, said rolling support link mechanism further including an upper bracket formed on an upper portion of a connection portion connecting a left section and a right section of the swing arm, the first support link pivotally mounted to the upper portion.