| 摘要 |
<p>In an elevator speed governor, a clutch mechanism is disposed between a speed governor sheave and a rotary body. An actuator switches between transmission and interruption of rotation by the clutch mechanism according whether or not it is applied with current from a DC generator which generates current by the rotation of the speed governor sheave. A rectifying circuit allows a current to flow from the DC generator to the actuator only when the speed governor sheave turns in a predetermined direction out of a first direction and a second direction.</p> |
