Patent ID: 7201262
Filing Date: 2007-04-10
Classification: F16D

Abstract:
1. A one-way rotational transfer mechanism comprising: a rotary input shaft having an orthogonal surface lying on a plane orthogonal to an axis of said rotary input shaft; a hollow-cylindrical rotary output shaft provided around said rotary input shaft to be freely rotatable relative to said rotary input shaft about said axis thereof, said hollow-cylindrical rotary output shaft having a cylindrical inner peripheral surface; a circumferentially-uneven-width-space forming portion formed on said rotary input shaft to form at least one accommodation space between said rotary input shaft and said cylindrical inner peripheral surface, said accommodation space having different radial widths at different circumferential positions; a differential rotating member installed in said accommodation space, and pressed against said orthogonal surface by a biasing device, said differential rotating member revolving around said axis of said rotary input shaft in a same direction as a rotational direction of said rotary input shaft while revolving at a slower speed than said rotation of said rotary input shaft in association with said rotation of said rotary input shaft; and at least one torque transfer member installed in said accommodation space to be freely movable therein, said torque transfer member revolving around said axis of said rotary input shaft in a same rotational direction as said differential rotating member when pressed by said differential rotating member, wherein said circumferentially-uneven-width-space forming portion is shaped so that said torque transfer member, which rotates in a circumferential direction about said axis of said rotary input shaft, wedges between said circumferentially-uneven-width-space forming portion and said cylindrical inner peripheral surface of said hollow-cylindrical rotary output shaft in order to transfer a torque from said rotary input shaft to said hollow-cylindrical rotary output shaft when said rotary input shaft is rotated.