阅读说明：本技术 用于选择性地定位轮子的枢轴的装置 (Device for selectively positioning the pivot of a wheel ) 是由 马里亚诺·罗曼 恩里科·菲德尔法蒂 于 2021-04-28 设计创作，主要内容包括：用于选择性地定位轮子的枢轴的装置包括由后撑条构成的框架,后撑条设置有第一对第一斜后链撑条,分别通过三角形支撑件各自连接到第二对两个第二水平后链撑条,变速器钩可与第一链撑条和第二链撑条相关联。在支撑件的第一外表面处和第一内表面处设置有第一外部座和第二内部座,分别用于第一外部适配器和第二内部适配器的轴向且可移除的定位。第一外部适配器和第二内部适配器分别具有第二孔和第三孔,第二孔和第三孔两者均平滑并且适于确定变速器钩的两种不同的轴向布置,以及因此确定轮子的枢轴相对于两个第一链撑条和第二链撑条的两种不同的轴向布置,并且适于保持变速器钩的顺时针旋转被锁定,并且仅自由地逆时针旋转通过选定的弧度。(The device for selectively positioning the pivot of the wheel comprises a frame constituted by rear stays provided with a first pair of first inclined rear chain stays respectively connected to a second pair of two second horizontal rear chain stays by triangular supports, a derailleur hook being associable with the first and second chain stays. At the first outer surface and at the first inner surface of the support there are provided a first outer seat and a second inner seat for the axial and removable positioning of the first external adapter and the second internal adapter, respectively. The first external adapter and the second internal adapter have a second hole and a third hole, respectively, both smooth and adapted to determine two different axial arrangements of the transmission hook, and therefore of the pivot of the wheel, with respect to the two first chain stays and the second chain stay, and to keep the transmission hook locked for clockwise rotation and free to rotate only counterclockwise through a selected arc.)