Hand-Held Tool Gear Mechanism Unit

Abstract

A hand-held tool gear mechanism unit includes a drive gearwheel, an output gearwheel, and a connecting unit. The output gearwheel has a rotational axis spaced apart radially from a rotational axis of the drive gearwheel. The connecting unit is configured to transmit a rotational movement from the drive gearwheel to the output gearwheel substantially without a step-up transmission ratio. The connecting unit is configured to couple the drive gearwheel and the output gearwheel such that they can be moved relative to one another about a pivot axis.

What is claimed is: 
     
         1 . A hand-held tool gear mechanism unit, comprising:
 a drive gearwheel;   an output gearwheel having a rotational axis spaced apart radially from a rotational axis of the drive gearwheel; and   a connecting unit configured to transmit a rotational movement from the drive gearwheel to the output gearwheel substantially without a step-up transmission ratio,   wherein the connecting unit couples the drive gearwheel and the output gearwheel in such a way that the drive gearwheel and the output gearwheel are pivotable relative to one another about a pivot axis.   
     
     
         2 . The hand-held tool gear mechanism unit according to  claim 1 , further comprising:
 a pivoting housing in which the output gearwheel is mounted, the pivoting housing being mounted pivotably on the connecting unit.   
     
     
         3 . The hand-held tool gear mechanism unit according to  claim 1 , wherein the pivot axis is oriented perpendicularly with respect to the rotational axis of the drive gearwheel. 
     
     
         4 . The hand-held tool gear mechanism unit according to  claim 1 , wherein the connecting unit has at least one gearwheel configured as a bevel gearwheel. 
     
     
         5 . The hand-held tool gear mechanism unit according to  claim 1 , wherein the connecting unit has two gearwheels arranged separately from one another. 
     
     
         6 . The hand-held tool gear mechanism unit according to  claim 5 , wherein the gearwheels of the connecting unit are arranged between the rotational axis of the drive gearwheel and the rotational axis of the output gearwheel. 
     
     
         7 . The hand-held tool gear mechanism unit according to  claim 5 , further comprising:
 a bearing apparatus mounting a shaft of the connecting unit at two points,   wherein at least one of the gearwheels of the connecting unit is arranged between the two points.   
     
     
         8 . The hand-held tool gear mechanism unit according to  claim 7 , further comprising:
 a pivoting housing in which the output gearwheel is mounted, the pivoting housing being mounted pivotably on the shaft of the connecting unit by the bearing apparatus.   
     
     
         9 . The hand-held tool gear mechanism unit according to  claim 1 , further comprising a drive shaft configured at least partially integrally with the drive gearwheel. 
     
     
         10 . The hand-held tool gear mechanism unit according to  claim 1 , further comprising an output shaft configured at least partially integrally with the output gearwheel. 
     
     
         11 . The hand-held tool gear mechanism unit according to  claim 1 , further comprising:
 a coupling apparatus configured to produce a connection to a hand-held tool,   wherein the coupling apparatus is further configured so that the connection is terminable in response to an operator action.   
     
     
         12 . A hand-held tool, comprising:
 a hand-held tool gear mechanism unit, including:
 a drive gearwheel; 
 an output gearwheel having a rotational axis spaced apart radially from a rotational axis of the drive gearwheel; and 
 a connecting unit configured to transmit a rotational movement from the drive gearwheel to the output gearwheel substantially without a step-up transmission ratio, 
 wherein the connecting unit couples the drive gearwheel and the output gearwheel in such a way the drive gearwheel and the output gearwheel are pivotable relative to one another about a pivot axis. 
   
     
     
         13 . The hand-held tool according to  claim 13 , further comprising a machine housing having an overall length of less than 180 mm. 
     
     
         14 . A system comprising:
 a hand-held tool, including:
 a hand-held tool gear mechanism unit, including:
 a drive gearwheel; 
 an output gearwheel having a rotational axis spaced apart radially from a rotational axis of the drive gearwheel; 
 a connecting unit configured to transmit a rotational movement from the drive gearwheel to the output gearwheel substantially without a step-up transmission ratio; and 
 a coupling apparatus configured to produce a connection to the hand-held tool, 
 wherein the connecting unit couples the drive gearwheel and the output gearwheel in such a way the drive gearwheel and the output gearwheel are pivotable relative to one another about a pivot axis, and 
 wherein the coupling apparatus is further configured so that the connection is terminable in response to an operator action.