| 摘要 |
A portable power tool is provided which includes a rotation motor ( 11 ), an output shaft ( 14 ), a gearing ( 13 ) and a drive spindle ( 12; 112 ) connecting the gearing ( 13 ) to the motor ( 11 ). A drive line arresting lock device ( 17; 117 ) is provided to facilitate loosening and/or tightening of a working implement mounting device ( 15 ), and a releasable safety clutch ( 23; 123 ) is provided between the lock device ( 17; 117 ) and the gearing ( 13 ) for protecting the gearing ( 13 ) against transmission of detrimental excessive torque magnitudes manually applied on the output shaft/mounting device ( 14, 15 ).
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