Battery Powered Long-Lever Sander

Abstract

The utility model discloses a battery powered long-lever sander. The battery powered long-lever sander includes a sander head assembly and a handle. The sander head assembly is connected to the handle and includes a housing and a sanding disc that is disposed in the housing. The battery powered long-lever sander further includes a driving system connected to the sanding disc and configured to drive the sanding disc to run. The driving system is electrically connected to a driving power source, and the driving power source is a battery pack so that the sander can be used without limitations of plugging of a power wire and thus can be used more conveniently.

What is claimed is: 
     
         1 . A battery powered long-lever sander, characterized by comprising: a sander head assembly that comprises a housing and a sanding disc disposed in the housing; and
 a driving system connected to the sanding disc and configured to drive the sanding disc to run;   wherein the driving system is electrically connected to a driving power source which is a battery pack.   
     
     
         2 . The battery powered long-lever sander according to  claim 1 , characterized in that the battery pack has an output voltage of 18 V to 60 V. 
     
     
         3 . The battery powered long-lever sander according to  claim 1 , characterized in that the driving system comprises a driving motor and a transmission mechanism that is connected in transmission to the sanding disc, wherein the driving motor is a brushless magnet motor or a brush magnet motor; and a control unit of the driving motor is configured to keep a rotating speed constant without consideration of load. 
     
     
         4 . The battery powered long-lever sander according to  claim 3 , characterized in that the brushless magnet motor is a disc type motor/flat type multi-polar high power density motor. 
     
     
         5 . The battery powered long-lever sander according to  claim 1 , characterized by further comprising a handle that is connected to the head assembly. 
     
     
         6 . The battery powered long-lever sander according to  claim 5 , characterized in that the handle comprises a main handle and an extension handle that are connected by means of a quick release assembly. 
     
     
         7 . The battery powered long-lever sander according to  claim 6 , characterized in that a mechanical main power switch is provided on the main handle. 
     
     
         8 . The battery powered long-lever sander according to  claim 6 , characterized in that a power interface of the sander is located on the main handle. 
     
     
         9 . The battery powered long-lever sander according to  claim 8 , characterized in that the power pack is directly connected to the power interface, or connected to the power interface by a wire.