Hand-Held Machine Tool

Abstract

The disclosure relates to a hand-held machine tool, comprising a drive unit, a gearbox unit, which comprises at least one input shaft and at least one output shaft operatively connected to the input shaft, and a tool holder, which is configured to be driven via the output shaft of the gearbox unit in an oscillating manner about an axis of rotational symmetry of the output shaft. A vibration compensating unit is proposed, which comprises at least one compensating mass which, in order to compensate for a vibration, is driven in at least one operating state against a direction of movement of the tool holder.

1 . A hand power tool comprising:
 a drive unit;   a transmission unit including (i) at least one input shaft and (ii) at least one output shaft operatively connected to the input shaft;   a tool receiver configured to be driven in an oscillating manner, via the output shaft of the transmission unit, about a rotational symmetry axis of the output shaft; and   a vibration compensating unit including at least one compensating mass that, in at least one operating state, is configured to be driven contrary to a direction of motion of the tool receiver,   wherein the vibration compensation unit is configured to compensate a vibration.   
     
     
         2 . The hand power tool as claimed in  claim 1 , wherein the transmission unit includes (i) at least one first cam mechanism configured to drive the tool receiver, and (ii) at least one second cam mechanism configured to drive the compensating mass. 
     
     
         3 . The hand power tool as claimed in  claim 2 , wherein the first cam mechanism and the second cam mechanism are operatively coupled to the drive unit. 
     
     
         4 . The hand power tool as claimed in  claim 3 , wherein:
 the first cam mechanism includes a first eccentric element disposed on the input shaft, and   the second cam mechanism includes a second eccentric element disposed on the input shaft.   
     
     
         5 . The hand power tool as claimed in  claim 4 , wherein the first eccentric element and the second eccentric element are offset in relation to each other by at least substantially 180°. 
     
     
         6 . The hand power tool as claimed in  claim 2 , further comprising:
 an angled motion converter configured to operatively connect the compensating mass of the vibration compensating unit to the second cam mechanism.   
     
     
         7 . The hand power tool as claimed in  claim 6 , wherein the compensating mass of the vibration compensating unit and the angled motion converter are realized in an at least partially integral manner. 
     
     
         8 . The hand power tool as claimed in  claim 1 , wherein the compensating mass of the vibration compensating unit is rotatably mounted on the output shaft.