| 摘要 |
PROBLEM TO BE SOLVED: To continue driving-in work even if a power source is cut off in the present invention, since there is the problem of becoming unable to continue the driving-in work when a battery power source is conventionally cut off, though electric starting control for executing driving-in operation is conventionally executed when ON operation of a trigger and ON operation of a contact arm are executed within a constant time.SOLUTION: A first mode of executing mechanical starting control and a second mode of executing electric starting control, are switchably constituted. Only on the second mode, when ON operation of a trigger 12 and ON operation of a contact arm 6 are executed within a reference time T, driving-in is executed by turning on a second operation part 14, and on the first mode, driving-in is made possible by the mechanical starting control by operation order of the trigger 12 and the contact arm 6 without depending on such electric control. Thus, even if power source supply is cut off, driving-in work by the first mode can be continued.SELECTED DRAWING: Figure 4 |
