Handheld abrading machine

Abstract

A handheld abrading machine is provided which includes a holding device, a drive motor and a tool head, wherein the holding device includes a substantially tubular bar which has a proximal end and a distal end, wherein the drive motor is arranged at the proximal end, wherein the tool head is arranged at the distal end, wherein the abrading machine includes a transmission shaft which connects the drive motor to a tool holder of the tool head for transmitting torque thereto and which runs at least in sections thereof within the tubular bar, wherein the tubular bar includes an engagement region which is gripped by a user when the abrading machine is effecting an abrading action. A center of gravity of the drive motor and a center of gravity of the tool head can be located on mutually opposite sides of a longitudinal axis of the tubular bar.

1 . A handheld abrading machine comprising a holding device for holding the abrading machine, a drive motor and a tool head,
 wherein the holding device comprises a substantially tubular bar which has a proximal end and a distal end,   wherein the drive motor is arranged at the proximal end,   wherein the tool head is arranged at the distal end,   wherein the abrading machine comprises a transmission shaft which connects the drive motor to a tool holder of the tool head for transmitting torque thereto and which runs within the tubular bar at least in sections thereof,   wherein the tubular bar comprises an engagement region which is gripped by a user when the abrading machine is effecting an abrading action,   wherein a center of gravity of the handheld abrading machine is arranged within the tubular bar,   wherein a center of gravity of the drive motor and a center of gravity of the tool head are located on mutually opposite sides of a longitudinal axis of the tubular bar.   
     
     
         2 . The handheld abrading machine in accordance with  claim 1 , wherein a motor shaft rotational axis of the drive motor is oriented substantially parallel to the longitudinal axis of the tubular bar. 
     
     
         3 . The handheld abrading machine in accordance with  claim 1 , wherein the longitudinal axis of the tubular bar is at least one of a longitudinal axis, an axis of symmetry or a mid axis of a central section of the tubular bar between the drive motor and the tool head. 
     
     
         4 . The handheld abrading machine in accordance with  claim 3 , wherein the longitudinal axis of the tubular bar is at least one of a longitudinal axis, an axis of symmetry or a mid axis of a central linear section of the tubular bar between the drive motor and the tool head. 
     
     
         5 . The handheld abrading machine in accordance with  claim 1 , wherein the longitudinal axis of the tubular bar is a longitudinal axis of an engagement region of the tubular bar which is gripped by a user when the abrading machine is effecting an abrading action. 
     
     
         6 . The handheld abrading machine in accordance with  claim 1 , wherein the tubular bar comprises one or more guide elements for the guidance of the transmission shaft. 
     
     
         7 . The handheld abrading machine in accordance with  claim 1 , wherein a motor shaft of the drive motor and an end of the transmission shaft towards the drive motor are mutually offset with respect to at least one of a direction running perpendicularly to the longitudinal axis of the tubular bar or a direction running parallel to the longitudinal axis of the tubular bar. 
     
     
         8 . The handheld abrading machine in accordance with  claim 1 , wherein a motor shaft rotational axis, a rotational axis of an end of the transmission shaft towards the drive motor and/or a rotational axis of a section of the transmission shaft running in the engagement region of the tubular bar are at least approximately mutually parallel. 
     
     
         9 . The handheld abrading machine in accordance with  claim 1 , wherein a motor shaft rotational axis, a rotational axis of an end of the transmission shaft towards the drive motor and/or a rotational axis of a section of the transmission shaft running in the engagement region of the tubular bar are mutually offset with respect to a direction running perpendicularly to the longitudinal axis of the tubular bar. 
     
     
         10 . The handheld abrading machine in accordance with  claim 1 , wherein the drive motor and the transmission shaft are connected to one another by means of an offsetting device by means of which a rotational movement of a motor shaft of the drive motor is transferable to an end of the transmission shaft which is towards the drive motor and is offset relative to the motor shaft. 
     
     
         11 . The handheld abrading machine in accordance with  claim 10 , wherein the offsetting device comprises a gear wheel device for the transmission of the rotational movement. 
     
     
         12 . The handheld abrading machine in accordance with  claim 10 , wherein the offsetting device comprises a toothed belt device for the transmission of the rotational movement. 
     
     
         13 . The handheld abrading machine in accordance with  claim 1 , wherein a motor shaft of the drive motor and an end of the transmission shaft towards the drive motor are at least approximately mutually coaxial. 
     
     
         14 . The handheld abrading machine in accordance with  claim 1 , wherein a motor shaft of the drive motor and a section of the transmission shaft running in the engagement region of the tubular bar are mutually offset with respect to a direction running perpendicularly to the longitudinal axis of the tubular bar. 
     
     
         15 . The handheld abrading machine in accordance with  claim 14 , wherein the motor shaft of the drive motor and the section of the transmission shaft running in the engagement region of the tubular bar are connected to one another by means of a flexible section of the transmission shaft.