Patent ID: 8172584

Claim:
An electric part connection mechanism which is disposed in an operating machine and connects an electric part ( 20 ) mounted on an operation panel ( 5 ) of an operating machine ( 1 ) to an assembling terminal of a junction box ( 10 ) having a plurality of terminals connected to a circuit ( 13 ) of the operating machine via a relay connector ( 30 ) of a cylindrical body, wherein the relay connector ( 30 ) includes: a defining wall ( 31 ) which is formed inside the cylindrical body; a fitting portion ( 32 ) which is formed at one side of the defining wall so as to fit the electric part ( 20 ); a plurality of relay terminals ( 33 ) which is attached to the other side of the defining wall ( 31 ) and is connectable to the plurality of terminals; and a plurality of holes which is provided in the defining wall ( 31 ) so as face front ends of the plurality of relay terminals, respectively.