Continuously variable transmission
    8.
    发明授权
    Continuously variable transmission 有权
    连续可变传动

    公开(公告)号:US07976426B2

    公开(公告)日:2011-07-12

    申请号:US11842050

    申请日:2007-08-20

    IPC分类号: F16H15/26

    摘要: A continuously variable transmission (CVT) having a number of tiltable ball-leg assemblies configured angularly about a longitudinal axis. Each ball-leg assembly is in contact with, and guided through a tilting motion by an axially translating shift cam having a convex shape. The convex shape of the shift cam can have a profile defined by a set of parametric equations. In one embodiment, the profile of the shift cam vary according to the location of the contact point between an idler and the ball-leg assembly as well as the amount of relative axial motion between the ball-leg assembly and the idler. In some embodiments, the profile of the shift cam can be configured to control the axial translation of the idler relative to the change in tilt angle of the ball-leg assembly. In other embodiments, a roll-slide factor can be used to characterize the axial translation of the idler relative to the tilt angle of the ball-leg assembly.

    摘要翻译: 具有多个可倾斜的球腿组件的无级变速器(CVT),所述可转动的球腿组件围绕纵向轴线成角度地配置。 每个球腿组件通过具有凸形形状的轴向平移换档凸轮接触并通过倾斜运动引导。 换档凸轮的凸形可以具有由一组参数方程定义的轮廓。 在一个实施例中,换档凸轮的轮廓根据惰轮和球腿组件之间的接触点的位置以及球腿组件和惰轮之间的相对轴向运动的量而变化。 在一些实施例中,换档凸轮的轮廓可以被配置为控制惰轮相对于球腿组件的倾斜角度的变化的轴向平移。 在其他实施例中,滑动因子可用于表征惰轮相对于球腿组件的倾斜角度的轴向平移。