The invention discloses a straight-locking vertical tube, comprising a base and an upper cover. The base has a clamping part, two extension parts and two first penetrating holes arranged on the extension hole. The clamping portion has a groove concaving from the top surface, a concave arc surface positioned the lower groove, two second penetrating hole and four screw bolt which are arranged on the lower concave arc surface, two shoulder caps, the first screw of which pass the first penetrating hole and screwed on a vertical tube; the two screws penetrates the second penetrating holes and are screwed on the shoulder cap; the upper cover has an upper groove sinking from the bottom, an upper concave arc surface positioned inside the upper groove and four third penetrating holes arranged on the bottom; the four third screws are penetrating the third penetrating holes and screwed in the screw hole.


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    Title :

    Straight-locking vertical tube


    Contributors:
    HE KAIWEN (author)

    Publication date :

    2015-09-09


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B62K Fahrräder , CYCLES