The invention relates to a double-cylinder piston oil pressure upper pump and an oil pressure disc brake. The double-cylinder piston oil pressure upper pump is used in cooperation with a handlebar transverse pipe of a bicycle frame and comprises an upper pump body, one end of the upper pump body is movably connected with a brake handle piece, and a double-cylinder oil cavity is formed in the side, close to the brake handle piece, of the upper pump body; the double-cylinder oil cavity comprises a first oil cylinder cavity and a second oil cylinder cavity which are coaxially communicated, the inner diameters of the first oil cylinder cavity and the second oil cylinder cavity are sequentially decreased, a double-cylinder piston piece is movably assembled in the double-cylinder oil cavity, and a piston rod is movably assembled at the first end of the double-cylinder piston piece. And the other end of the piston rod extends out of the oil cylinder cavity and is fixedly assembled at the lower end part of the brake handle piece so as to drive oil liquid to be input into the oil outlet at a large braking force ratio when the brake handle piece moves at a small swing angle. The swing angle movement stroke of the brake is divided into two stages, in the first stage, when the brake handle piece moves at a small swing angle, the preset gap between the brake pad and the disc can be eliminated in a small stroke; and in the second stage, the brake handle piece is further pinched, and the effect that the brake handle piece moves at a small swing angle to achieve strong braking is achieved.

    本申请涉及一种双缸活塞油压上泵和油压碟刹。该双缸活塞油压上泵搭配一自行车车架的把横管使用,包括一上泵体,上泵体的一端活动连接有刹把件,上泵体靠近刹把件的一侧开设有双缸油腔;双缸油腔包括有同轴心连通设置且内径依次递减的第一油缸腔和第二油缸腔,双缸油腔内活动装配有双缸活塞件,且双缸活塞件的第一端活动装配有活塞杆,活塞杆的另一端延伸出油缸腔并固定装配于刹把件的下端部以在刹把件小摆角活动时驱动油液大制动力比值输入出油口。本申请将刹车的摆角活动行程分为两阶段,第一阶段,刹把件小摆角活动时,可实现小行程消除刹车片与碟盘的预置间隙;第二阶段,进一步捏动刹把件,获得了刹把件小摆角活动而强力制动效果。


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    Title :

    Double-cylinder piston oil pressure upper pump and oil pressure disc brake


    Additional title:

    一种双缸活塞油压上泵和油压碟刹


    Contributors:
    YU ZHIJUN (author) / WU SIBIN (author) / CHENG YAO (author)

    Publication date :

    2024-08-27


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

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



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