PURPOSE: To reduce the number of parts and stabilize oil pressure that locks up an orifice by providing the orifice as a flow resistance generating means at the outer diameter part of a pressure receiving member, and closing the orifice with a guide member that holds the pressure receiving member capable of freely sliding.
CONSTITUTION: Since generated transfer torque is proportional to the oil pressure that acts on a plunger 18, the oil pressure is proportional to the square of the flow velocity of the oil that passes through an orifice 25, and the flow velocity of the oil is proportional to the difference in the rotation speed of a cam housing 15 and a rotor 16, large torque proportional to the square of the difference in the rotation speed can be obtained. And, when discharge pressure exceeds a threshold value, a pressure receiving member 26 moves rightward resisting a return spring 24, and a guide member 23 closes the orifice 25. Since the orifice closing member need not to receive the load acting on the pressure receiving member 26 due to oil pressure like this, wear of orifice closing member does not occur, malfunction of being incapable of releasing lock does not occur, and the number of parts can be reduced as the guide member 23 doubles as the orifice closing member.
| JP3326134 | [Title of Invention] Hydraulic power transmission joint |
| WO/1985/005424 | CONTROL APPARATUS FOR TIDAL TURBINE |
| JP3246758 | HYDRAULIC POWER TRANSMISSION JOINT |
INA HIDEAKI
YAMADA TAKEHISA
| JPH02120521A | 1990-05-08 |