The invention discloses a bicycle expansion brake which is composed of two brake blocks and an expanding mechanism, sliding grooves are formed in the middles of the two brake blocks in the radius direction, supporting columns are arranged at the positions, corresponding to the sliding grooves, of a brake box, and the sliding grooves of the two brake blocks are connected to the supporting columns in a sleeved mode respectively. The opening mechanism is composed of two opening plates and a pull wire plate, the two contact ends of the two brake blocks are each provided with a tension spring, the wiring end of the pull wire plate is pulled to enable the pull wire plate to rotate, the two opening columns drive the opening plates connected with the two opening columns respectively, and the two opening columns drive the two brake blocks to rotate. The opening angles of the two opening plates are extruded to open the contact ends of the two corresponding brake blocks respectively, so that the two brake blocks make contact with the brake ring through the arc-shaped faces of the brake pads at the same time for braking. The expanding mechanism is installed in the limited space in the expansion brake, and under the condition that original components are almost not changed, the brake parts of the brake blocks are in surface contact, braking is sensitive, abrasion is even, and the service life is long.

    本发明公开了一种自行车涨闸,涨闸由两个刹车块和一个撑开机构构成,在两个刹车块的中部均沿半径方向设置滑槽,在闸盒对应滑槽处设置支撑柱,两个刹车块的滑槽分别套接在各自的支撑柱上;撑开机构由两个撑开板和一个拉线板构成,在两个刹车块的两个接触端分别设置一根拉簧,拉动拉线板的接线端使拉线板旋转,两根撑开柱分别带动各自连接的撑开板,两块撑开板的撑开角通过挤压分别顶开各自对应的两个刹车块的接触端,使得两个刹车块同时以刹车片的弧形面与闸圈接触刹车。本发明利用涨闸内的有限空间安装撑开机构,在几乎不改变原有部件的情况下,使刹车块的刹车部分面接触,刹车灵敏,磨损均匀,使用寿命长。


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    Titel :

    Bicycle expansion brake


    Weitere Titelangaben:

    一种自行车涨闸


    Beteiligte:
    WU KEXUE (Autor:in)

    Erscheinungsdatum :

    2022-03-22


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    B62L BRAKES SPECIALLY ADAPTED FOR CYCLES , Bremsen, besonders für Fahrräder oder Motorräder ausgebildet



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