Patent ID: 7644796
Filing Date: 2010-01-12
Classification: B62K

Abstract:
1. A motorcycle frame comprising: a head pipe; a main frame for supporting an engine thereon, said main frame extending rearwardly from the head pipe along a center of vehicle width, and then bending downward on a rear side of said engine so as to extend down to a pivot portion; a left-right pair of side plates fixed to respective left and right sides of said main frame, said side plates each abutting on and joined to a first joint portion provided in said main frame; a swing arm pivotally supported by said pivot portion, said swing arm held between the left-right pair of side plates disposed with said main frame therebetween; and an engine hanger for supporting said engine on said main frame, said engine hanger abutting on and joined to a second joint portion provided in said main frame, wherein each said side plate comprises: wherein a first joint surface of said first joint portion, which abuts on said side plate, and a second joint surface of said second joint portion, which abuts on said engine hanger, are situated substantially on the same plane.