PROBLEM TO BE SOLVED: To provide a power source harness connecting structure of a working machine connecting device, which achieves automatic attachment and detachment of a power source harness. SOLUTION: The power source harness connecting structure of the working machine connecting device includes a male connector 71 provided in one of a connecting frame side harness 67 and a working machine side harness 68, a female connecter 72 which can be engaged with the male connecter 71 and is provided in the other, wherein when a connection frame 31 and a working machine 1 reach a connection position, the male connector 71 and the female connector 72 are engaged with each other in conjunction with the reaching. The male connecter 71 has a male bottom wall 75 in one back and forth-direction end side and a male guiding surface 78 tapered toward the male bottom wall 75 in the back and forth direction. The female connector 72 has a female bottom wall 80 corresponding to the male bottom wall 75 of the male connector 71 and a female guiding surface 83 to be guided in a sliding manner by the male guiding surface 78 in the engagement and each of the male connecter 71 and the female connector 72 is provided with a connecting terminal. COPYRIGHT: (C)2012,JPO&INPIT
