Guard for an electric machine tool, electric machine tool, and system comprising a guard and electric machine tool

Abstract

The present invention is directed to a guard for a power tool with a rotatably driven insertion tool ( 14 ), with which at least portions of the insertion tool ( 14 ) can be covered. According to the present invention, at least one blocking means ( 32, 40 ) is provided that at least prevents the insertion tool ( 14 ) from turning around an axis of rotation ( 18 ).

1 . A guard for a power tool with a rotatably driven insertion tool ( 14 ), with which at least portions of the insertion tool ( 14 ) can be covered, wherein 
 at least one blocking means ( 32 ,  40 ) is provided that at least prevents the insertion tool ( 14 ) from turning around an axis of rotation ( 18 ).    
   
   
       2 . The guard as recited in  claim 1 , wherein 
 the blocking means ( 32 ,  40 ) is formed by stop cam ( 32 ) in a flange ( 30 ) designed for fastening, flange ( 30 ) extending substantially parallel to the axis of rotation ( 18 ).    
   
   
       3 . The guard as recited in  claim 1 , wherein 
 the blocking means ( 32 ,  40 ) is formed by a stop cam ( 32 ) in a clamp ( 26 ) connected with the flange ( 30 ).    
   
   
       4 . The guard as recited in  claim 3 , wherein 
 the stop cam ( 32 ), in the installed state, points toward a collar ( 24 ).    
   
   
       5 . The guard as recited in  claim 1 , wherein 
 the blocking means ( 32 ,  40 ) is formed by a projecting blocking lug ( 40 ).    
   
   
       6 . The guard as recited in  claim 5 , wherein 
 the blocking lug ( 40 ) is located on the flange ( 30 ).    
   
   
       7 . The guard as recited in  claim 5 , wherein 
 the blocking lug ( 40 ) is located on a surface extending substantially perpendicular to the axis of rotation ( 18 ), adjacent to an opening for a drive shaft ( 22 ).    
   
   
       8 . A power tool with an electric motor located in a housing ( 10 ), the electric motor rotatably driving an insertion tool ( 14 ), wherein 
 a rotation-prevention means ( 20 ) is provided that at least prevents the insertion tool ( 14 ) from being released in the direction of an operator.    
   
   
       9 . The power tool as recited in  claim 8 , wherein 
 the rotation-prevention means ( 20 ) includes a stop means ( 34 ,  42 ) for the blocking means ( 32 ,  30 ) that corresponds with a blocking means ( 32 ,  40 ) for a guard ( 16 ).    
   
   
       10 . The power tool as recited in  claim 8 , wherein 
 a collar ( 24 ) includes an insertion groove ( 36 ) with a limiting groove ( 34 ) located at an angle thereto.    
   
   
       11 . The power tool as recited in  claim 8 , wherein 
 a stop ( 42 ) that projects outward at an angle is provided on the housing ( 10 ).    
   
   
       12 . A system composed of guard ( 16 ) and power tool as recited in  claim 1 , wherein 
 a rotation-prevention means ( 20 ) is provided with a blocking means ( 32 ,  40 ) on the guard side and with a corresponding stop means ( 34 ,  42 ) on the power tool side.    
   
   
       13 . The system as recited in  claim 12 , wherein 
 the rotation-prevention means. ( 20 ) can be triggered by the insertion tool ( 14 ) acting on the guard ( 16 ).    
   
   
       14 . An angle grinder, the grinding disc of which is covered, at least in some areas, by a guard ( 16 ), as recited in  claim 1.