| 摘要 |
PURPOSE:To make the attenuating force variable responding to the rotation acceleration by providing a piston enforcing means to reduce the volume of one side chamber, an enforcing means to separate a mass body in the other side chamber from a piston, and a hydraulic damper including a separation distance regulating means of the mass body and a section area regulating means of the passage between the two chambers. CONSTITUTION:When a lock-up piston 51 is rotated in the direction A by the engine torque, the left side input shaft 38L of a hydraulic damper 50 is pushed by a motive power transmitting pawl 55 to move a piston 34, and the fluid is moved from a right side chamber 35R to a left side chamber 35L through an orifice 37, so as to generate an attenuation force. When the rotation acceleration of the piston 51 is small, the distance between a piston 34 and a right side floating weight 43R is maintained by a right side auxiliary spring 45R, and the orifice 37 is not blocked by a right side needle 44R making the attenuation force minimum. On the other hand, when the rotation acceleration of the piston 51 is large, and an inertia mass acting to the weight 43R exceeds the enforcing force of the right side auxiliary spring 45R, the weight 43R is being stopped by the inertia mass, the orifice 37 is blocked, and a large attenuation force is generated. |
