| 摘要 |
PURPOSE:To aim at smoothing the rise-up of the rotational speed and at enhancing the transmission capacity by providing a dynamic pressure generating part in the outer peripheral section of a rotary plate in a fluid coupling, a small torque transmission part on one side of the rotary plate and a large torque transmission part on the other side of the rotary plate, and by supplying liquid into the large torque transmission part after the liquid being filled in the small torque transmission part. CONSTITUTION:There are provided a small torque transmission part on one side of a rotary plate 36 in a fluid coupling, a large torque transmission part 38 and a dynamic pressure generating part 39 composed of an outer peripheral inclined groove 38 and a radial communication hole on the other side of the rotary plate 36. In this arrangement, liquid led into a rear chamber during rotation is filled in a meshing section in the small torque transmission part 37 centrifugal force urging the liquid radially outward, and thereafter it is fed into a meshing section in the large torque transmission section 38 after overflowing from a piercing hole 42. Accordingly, it is possible to give a satisfactory rise-up characteristic during rise-up of the rotational speed and to exhibit a sufficient drive force upon maximum output operation. |
