A motorcycle body frame structure improves rigidity and further suppresses changes in vehicle body behavior. The body frame structure includes: a head pipe, right and left main frames connected to the head pipe, a down tube connected to the head pipe, right and left reinforcing frames installed between the down tube and corresponding right and left reinforcing frames. Each of the right and left reinforcing frames include a first and second joint portions joined to the down tube. The first joint portions are joined with corresponding right and left main frames. Each of the second joint portions include a first joint flange portion welded with corresponding right and left side surfaces of the down tube, a second joint flange portion welded with an upper surface of the down tube, and a third joint flange portion connected with the first and second joint flange portions and separated from the down tube.


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    Title :

    BODY FRAME STRUCTURE OF MOTORCYCLE


    Contributors:

    Publication date :

    2018-08-02


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B62K Fahrräder , CYCLES



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