Patent ID: 7547030
Filing Date: 2009-06-16
Classification: B62K

Abstract:
1. A support section structure for a swing arm provided in a motorcycle comprising: a swing arm for supporting a rear wheel for rotation and for a rocking motion in upward and downward directions on a vehicle body frame; power from a power source operatively mounted on said body frame is transmitted to said rear wheel through a drive shaft; a pair of pivotally supporting walls for supporting a front end portion of said swing arm for a rocking motion in upward and downward directions is provided in a spaced relationship from each other in a vehicle widthwise direction on said body frame, one of the two pivotally supporting walls being an intermediate frame arranged to cross a vehicle body center line (L) in the vehicle widthwise direction; said drive shaft being disposed on an outer side of said intermediate frame in the vehicle widthwise direction; and a reinforcing wall for reinforcing the intermediate shaft is disposed at a position on an outer side in the vehicle widthwise direction with respect to the intermediate frame and is provided integrally against removal on said vehicle body frame.