| 摘要 |
PURPOSE:To stabilize the transmission of torque so as to aim at obtaining a satisfactory rise-up of rotational speed by controlling the amount of liquid led from a rear chamber into a front chamber through a liquid leading amount adjusting part in a liquid leading mechanism with the use of a temperature sensing element so as to control the amount of residual liquid in the rear chamber. CONSTITUTION:A fan casing 21 is sectioned by a partition plate 23 in a front chamber 24 reserving therein liquid 25 having a predetermined viscosity and a rear chamber 25. Further, a liquid lead-out mechanism 32 composed of a center shaft 28, a link 29 and a lead-out pipe 31 leads the liquid 26 from the front chamber 24 into the rear chamber 25 through a temperature sensing element 27, and a fluid coupling 35 transmits a power from a rotary shaft 33 to a fan casing 21. It is noted that a passage means 45 is actuated by the temperature sensing element 27 so as to adjust the amount of the liquid 26 from the rear chamber 25 into the front chamber 24 with the use of a passage 45a, an introduction hole 45a and an adjusting hole 45c. Accordingly, the amount of residual liquid in the rear chamber 25 is suitably controlled so as to restrain the transmission torque from varying, thereby it is possible to stabilize the drive force and to give a satisfactory rise-up of the rotational speed. |
