PURPOSE: To transmit torque to a case from a driving disc in an optimal condition in response to various driving conditions by preventing an attendingly rotating phenomenon.
CONSTITUTION: In a liquid clutch where a torque transmitting chamber 5 and an oil reserving chamber 6 are arranged in a case 3 in which a driving disc 4 rotated by a driving part 1 is housed and which freely rotates with a rotary shaft 2 as the center and driving torque of the driving disc 4 is transmitted to the case 3 by oil supplied to the torque transmitting chamber 5 from the oil reserving chamber 6, the liquid clutch is constituted in such a way that the oil of the torque transmitting chamber 5 is sucked by a vane pump mechanism to rotate by a difference between rotating speed of a rotary shaft 2 and rotating speed of the case 3, and is pressurized, and is sent into the oil reserving chamber 6, and is provided with a valve member 11 to open and close a supply hole 14 to flow the oil of the oil reserving chamber 6 in the torque transmitting chamber 5 and a solenoid type actuator 12 to actuate the valve member 11. Therefore, a noise of a cooling fan for an automobile is reduced, and fuel consumption is improved, and accelerating performance is improved.
HATORI MITSUAKI
TSUYUKI SATOSHI
