| 摘要 |
PURPOSE:To reduce a quantity of pivot rings and eliminate the waste of a material while facilitate manufacture and assembly work, by providing protrusions in an internal edge part of a cover member to use as one supporting point further plurally arranging said protrusions at an equal distance on the periphery. CONSTITUTION:A dish-shaped cover member 1 is tightened by bolts to the periphery of a flywheel 2, and a pressure plate 5 having a pipe-shaped driving surface 4 at a face-to-face position to a pipe-shaped driving surface 3 of the flywheel 2 is provided to the inside of the member 1, while a spring 6 of diaphragm type pressing the plate 5 in the direction of the flywheel 2 is arranged to the plate 5. Whie plural protrusions 20 are provided to an internal edge of a flat annular part 19 peripherally provided along an internal peripheral edge of a round shaped opening in the member 1, and pivot rings 22 and the spring 6 are held with protrusions 23 by the extended point end parts 21. Further the protrusions 23 are adapted to a surface of the spring 6, and the spring 6 can be swivelled with the rings 22 and the protrusions 23 as the supporting point. |
