| 摘要 |
A portable power tool with a rotation motor (11) drivingly connected to a working implement carrying chuck (16) via a drive shaft (13), wherein a rotation locking mechanism (19) is arranged to lock the drive shaft (13) in alternative directions via two freewheel couplings (21, 22), one "forward" rotation locking coupling (21) and one "reverse" rotation locking coupling (22). Both couplings (21, 22) are supported in an axially displaceable coupling sleeve (23) which is connected to an external maneuver ring element (24) on the outside of the housing (10) for shifting of the "forward" and "reverse" locking couplings (21, 22) between active and inactive positions, thereby accomplishing locking of the drive shaft (13) in either the "forward" direction or the "reverse" direction for loosening or tightening the chuck (16). |
