| 摘要 |
[Technical Problem] A lead wire of a drilling machine is routed so that a curved portion of the lead wire is not exposed to the outside and that the load on the lead wire is reduced. [Solution to Problem] A lead wire (50) connecting together a drive control circuit (12) in a body unit (20) of a drilling machine (10) and a motor (36) in a drilling drive unit (30) is led out from the motor to extend downward into a lead wire housing part (70) in the body unit through a lead wire passage (60) between the body unit and the drilling drive unit. In the lead wire housing part, the lead wire is curved and directed upward to lead to the drive control circuit, with an upwardly directed portion (52) held by a holding part (84). Thus, when the drilling drive unit (30) moves upward relative to the body unit (20), a part of the lead wire (50) is paid out upward from the lead wire housing part (70) into the lead wire passage (60), and a curved portion (54) moves upward in the lead wire housing part. When the drilling drive unit moves downward relative to the body unit, the lead wire moves reversely to the above. |
