Mechanical percussion mechanism

Abstract

A mechanical percussion mechanism for a percussion drive of a tool insert in a handheld power tool has a rotatably supported drive shaft, a percussion body connected to the drive shaft in a manner fixed against relative rotation and supported axially movable relative to the drive shaft, a rotatably supported driven shaft connected to the drive shaft in a manner fixed against relative rotation, the percussion body having drive cams and the driven shaft having drive cams, which drive cams of the percussion body and the driven shaft are bringable into operative connection for a percussion drive of the tool insert, and an axial stop provided for the percussion body.

1 . A mechanical percussion mechanism for a percussion drive of a tool insert in a handheld power tool, the mechanical percussion mechanism comprising a rotatably supported drive shaft; a percussion body connected to said drive shaft in a manner fixed against relative rotation and supported axially movable relative to said drive shaft; a rotatably supported driven shaft connected to said drive shaft in a manner fixed against relative rotation, said percussion body having drive cams and said driven shaft having drive cams, which drive cams on said percussion body and said driven shaft are bringable into operative connection for a percussion drive of the tool insert; and an axial stop provided for said percussion body. 
   
   
       2 . A mechanical percussion mechanism as defined in  claim 1 , wherein said stop for said percussion body is configured as a spring element. 
   
   
       3 . A mechanical percussion mechanism as defined in  claim 1 , wherein said stop for said percussion body is composed of an elastic material. 
   
   
       4 . A mechanical percussion mechanism as defined in  claim 3 , wherein said stop for said percussion body is composed of an elastomer. 
   
   
       5 . A mechanical percussion mechanism as defined in  claim 1 , wherein said stop for said percussion body is configured as an annular stop. 
   
   
       6 . A mechanical percussion mechanism as defined in  claim 5 , wherein said annular stop is supported on said drive shaft. 
   
   
       7 . A mechanical percussion mechanism as defined in  claim 1 , wherein said percussion body is connected to said drive shaft in a manner fixed against relative rotation via at least one slaving element. 
   
   
       8 . A mechanical percussion mechanism as defined in  claim 7 , wherein said at least slaving element is configured as a roller body. 
   
   
       9 . A mechanical percussion mechanism as defined in  claim 8 , wherein said at least one slaving element is configured as a ball. 
   
   
       10 . A handheld power tool, comprising a tool insert which is percussively driven; and a mechanical percussion mechanism for a percussive drive of said tool insert, said mechanical percussion mechanism including a rotatably supported drive shaft, a percussion body connected to said drive shaft in a manner fixed against relative rotation and supported axially movable relative to said drive shaft, a rotatably supported driven shaft connected to said drive shaft in a manner fixed against relative rotation, said percussion body having drive cams and said driven shaft having drive cams, which drive cams of said percussion body and said driven shaft are bringable into operative connection for the percussion drive of said tool insert, and an axial stop provided for said percussion body.