| 摘要 |
PURPOSE:To prevent slipping by urging a pair of opposed movable conical plates in such a manner as to be brought close to each other, and coupling the movable conical plates and a rotary shaft to the outer peripheral portion by a roll pin through a dry metal to uniformalize side pressure of a speed change V-belt. CONSTITUTION:A pair of movable conical plates 2, 2' are slidably loosely fitted to a rotary shaft 1 having a fitting hole 10 bored through one side axis thereof through boss portions 4, 4', and the movable conical plates 2, 2 are urged to be brought close to each other by springs 3, 3' mounted in cylinders 8, 8 covering the outer surface of the boss portions 4, 4'. A pair of roll pins 5, 5' are rotatably inserted in insertion holes 12, 12' bored through the boss portions 4, 4' through dry metals 6, 6' on the outer peripheral portion. Both end portions of the roll pins 5, 5' are turnably inserted in guide grooves 7, 7' bored through the rotary shaft 1 and guide grooves 9, 9' bored through the cylinders 8, 8' while the axial movement being regulated. |
