| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a conduction failure prevention device capable of removing an insulation film generated at a metal terminal part of a connector of a construction machine, and preventing conduction failures at the connector to prevent malfunctions. <P>SOLUTION: Provided are switching circuits 40 and 41 performing switching connection of a connector 38 connecting electrical wires used in a construction machine, between a circuit connected at a normal operation and an additional circuit. Also provided is switching command means, such as a key switch 50 and the like, commanding the switching circuits 40 and 41 to connect to the additional circuit side. The switching circuits 40 and 41 are switched over to the additional circuit side including a power supply 42 and a resistor 46 by a command signal from the switching command means to temporarily energize a metal terminal part in the connector 38. Thereby, an insulation film generated at the metal terminal part is removed. <P>COPYRIGHT: (C)2013,JPO&INPIT |
