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    • 51. 发明授权
    • Derailleur gear for a bicycle
    • 自行车变速齿轮
    • US4002080A
    • 1977-01-11
    • US551018
    • 1975-02-19
    • Roger HuretJacques Huret
    • Roger HuretJacques Huret
    • B62M9/1242B62M9/1248B62M9/126B62M9/127F16H7/22F16H9/24
    • B62M9/1242
    • A derailleur gear for a bicycle comprises a chain displacement means having a rigid linkage part movable transversely of the rear wheel in a direction generally along the axis of the rear wheel of the bicycle, the linkage part forming a side link in a support parallelogram linkage that includes vertically movable interconnected link portions connected to the rigid linkage part, the support parallelogram being in a plane generally transverse to the axis of the rear wheel. The chain guide pulley or sprocket is rotatably mounted on a spindle carried by a vertically movable portion of the support parallelogram linkage, as is an elongated cap or arm member that supports a chain tension pulley at a remote end from the spindle-connected end. A coil spring normally resiliently biases the vertically movable portions of the support parallelogram upwardly generally towards the rear wheel axis, and various motion limiting features are included. The coil spring also maintains the chain tension pulley in desired position to maintain chain tension. The displacement means itself may be a parallelogram linkage lying in a plane extending transverse to the plane of the support parallelogram linkage, with the rigid linkage part comprising a mutual link connecting the parallelogram linkages in a novel manner.
    • 用于自行车的拨链器齿轮包括链条移位装置,该链条移位装置具有刚性连接部分,该刚性连接部分沿着大致沿着自行车的后轮的轴线的方向横向于后轮移动,所述连接部分形成支撑平行四边形连杆的侧连杆, 包括连接到刚性连杆部分的可垂直移动的互连连接部分,所述支撑平行四边形处于大体上横向于后轮的轴线的平面中。 链条导向滑轮或链轮可旋转地安装在由支撑平行四边形连杆机构的可垂直移动的部分承载的心轴上,如同在主轴连接端的远端处支撑链条张力滑轮的细长的帽或臂构件一样。 螺旋弹簧通常弹性地将支撑件的垂直可移动部分平行四边形向上偏置朝向后轮轴线,并且包括各种运动限制特征。 螺旋弹簧还将链条张力皮带轮保持在期望的位置以保持链条张力。 位移装置本身可以是位于横向于支撑平行四边形连杆的平面延伸的平面中的平行四边形连杆,刚性连接部分包括以新颖的方式连接平行四边形连杆的相互连接。