PURPOSE: To transmit high torque by providing facing V grooves axially at a first shaft member and a second member with a fitting hole so as to form a longitudinal space with a rectangular cross section and fitting a cylindrical rolling body in the state of being clamped by the facing surfaces, thereby allowing its axial motion.
CONSTITUTION: A first V groove 72 is axially formed at the peripheral surface of a rotatably supported output shaft 34, and also at the inner surface of a fitting hole 74 piercing through the center of a rotating movable body 38, a second V groove 76 is formed in the parallel direction to the shaft. A pair of inner wall surfaces 72a, 72b of the first V groove and a pair of inner wall surfaces 76a, 76b make right angles to each other respectively with the same dimension in width so as to form a longitudinal space with a square cross section. A roller 38b rolls in the state of being clamped by the inner wall surfaces 72b, 76b, allows the axial motion of the rotating movable body 38 and transmits high torque in the rotating direction. The cross section of the longitudinal space can be made rectangular as well as the number of rollers can be chosen according to the direction and largeness of torque.
HAYASHI TAKASHI
TATARA TAKEHIRO
JUFUKU YASUNOBU
