| 摘要 |
<p>An apparatus for shutting off a power supply in a construction vehicle driven by an engine, including a power supply, functional electrical devices connected to the power supply, and a main relay (102) applying or shutting off the power supply to the functional electrical devices in accordance with the state of the key switch (101), includes manipulation sensing means (201), a control relay (202) installed between the key switch and the main relay to apply a key switch signal to a driving unit of the main relay if the electricity is not applied to its driving unit and to shut off the key switch signal to the driving unit of the main relay if the electricity is applied to its driving unit, and a controller (203) receiving a manipulation signal from the manipulation sensing means and shutting off the power by driving the control relay if there is no manipulation signal for a predetermined time. If the equipment is not used for a predetermined time, the engine is stopped and even if the key switch is in a turned-on state, the power supplied to the functional electrical devices is shut off by the controller.</p> |
