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.


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    Title :

    VEHICLE BODY FRAME STRUCTURE OF MOTORCYCLE


    Contributors:

    Publication date :

    2015-12-24


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B62K Fahrräder , CYCLES / B62J Fahrrad- oder Motorradsättel oder -sitze , CYCLE SADDLES OR SEATS



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