A vehicle body frame structure of a motorcycle includes: a head frame including right and left frame parts that extend downward and rearward while widening at a rear of a head pipe; right and left tank rails that are joined to rear ends of the frame parts and extend downward and rearward; and a body frame that is joined to rear ends of the right and left tank rails and supports swing arms. The head frame has a hollow closed cross section structure from the rear end of one of the frame parts to the rear end of the other of the frame parts via a coupling part, and has an engine bracket part having an open cross section structure integrally molded at a lower portion of the frame part. Further, the tank rail has a hollow closed cross section structure from its front end to its rear end, and a lower portion of the tank tail has an open cross section structure in a region except the front and rear ends of the tank rail and is also integrally molded with an engine bracket part having an open cross section structure.
VEHICLE BODY FRAME STRUCTURE OF MOTORCYCLE
2015-12-24
Patent
Electronic Resource
English
VEHICLE BODY FRAME STRUCTURE OF MOTORCYCLE AND MOTORCYCLE
European Patent Office | 2018
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