Patent ID: 7871227

Claim:
An auxiliary device for a hand-held power tool, the auxiliary device including a fitting for releasable holding a motor-operated, hand-held power tool having a drive shaft, the auxiliary device also including a drive train which includes a tool fitting, which tool fitting is rotated to be opened or closed, and which drive train includes a rotatable shaft ( 7 ) that is parallel to the drive shaft and that can be rotationally connected to the drive shaft of the motor-operated, hand-held power tool via a coupling device, the auxiliary device further comprising an anti-rotation locking device ( 13 ), which acts on the drive train ( 9 ), wherein the anti-rotation locking device ( 13 ) includes a non-rotatable locking element ( 35 ), wherein the rotatable shaft ( 7 ) includes a polygonal portion which interacts with the non-rotatable locking element ( 35 ) to rotationally lock the drive train ( 9 ) when the non-rotatable locking element ( 35 ) is moved in the direction of the rotational axis of the rotatable shaft ( 7 ).