PROBLEM TO BE SOLVED: To simply and easily rock a rocking member by a manual lever after removing an actuator.;SOLUTION: The back of a mounting body 51 is provided with a lock mechanism 58 for inhibiting separation of a working tool 6 by penetrating a latch 57 through a connecting part 56 and a lower mounting receive part 54. The lock mechanism 58 includes: right and left rocking members 60 rockably provided on the back of the mounting body 51; an interlocking means 61 for moving up and down the latch 57 by rocking of each rocking member 60; and an actuator 62 for rocking the right and left rocking members 60 at the same time. Each of the right and left rocking members 60 is provided with the manual lever 63 for switching between a non-working state S of being close to the actuator 62 and moving with the actuator 62 with rocking of the rocking member 60 and a working state P of being immovable to the rocking member 60 after removing the actuator 62 to manually rock the rocking member 60.;COPYRIGHT: (C)2010,JPO&INPIT
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