Hand-Held Sanding Machine

Abstract

A hand-held sanding machine includes at least one sanding device for receiving or configuring a sanding apparatus. The sanding device includes at least one fan for conveying away material subtracted in a sanding procedure, at least one drive device for driving the sanding device, and at least one connecting housing unit which at least partially receives the sanding device. An internal wall of the connecting housing unit that delimits a fan receptacle region is configured for guiding an air flow generated by the fan. The internal wall is funnel-shaped about a rotation axis of a driveshaft of the drive device.

1 . A hand-held sanding machine comprising:
 at least one sanding device for receiving or configuring a sanding apparatus, the sanding device comprising at least one fan configured to convey away material subtracted in a sanding procedure;   at least one drive device configured to drive the sanding device; and   at least one connecting housing unit which at least partially receives the sanding device, the connecting housing unit comprising an internal wall that delimits a fan receptacle region and is configured for guiding an air flow generated by the fan, said internal wall being funnel-shaped about a rotation axis of a driveshaft of the drive device.   
     
     
         2 . The hand-held sanding machine according to  claim 1 , the connecting housing unit further comprising:
 an air inlet;   an ejection port; and   a conical spiral path disposed on the internal wall running inlet in a direction of the rotation axis from the air to the ejection port.   
     
     
         3 . The hand-held sanding machine according to  claim 1 , wherein:
 the connecting housing unit further comprises:
 an ejection port with an outlet opening; and 
 an air inlet; and 
   the internal wall is segmented in a direction of the rotation axis, and the air inlet and the outlet opening are disposed in different segments of the internal wall.   
     
     
         4 . The hand-held sanding machine according to  claim 1 , wherein the connecting housing unit further comprises an ejection port with an outlet opening that forms a separation edge, the separation edge running at least substantially perpendicular to the rotation axis. 
     
     
         5 . The hand-held sanding machine according to  claim 1 , wherein the connecting housing unit further comprises an ejection port with an outlet opening that forms a separation edge, the separation edge running at least substantially parallel to the rotation axis, the separation edge configured so as to be highly tapered and to have a curvature radius of less than 10 mm. 
     
     
         6 . The hand-held sanding machine according to  claim 1 , wherein at least one segment of the internal wall forms a spiral path that has an angle between 15° and 60° in relation to the rotation axis. 
     
     
         7 . The hand-held sanding machine according to  claim 1 , wherein the connecting housing unit further comprises an ejection port having a duct longitudinal axis, the ejection port arranged such that the duct longitudinal axis is aligned, in a plane that is perpendicular to the rotation axis, so as to be at an acute angle relative to a longitudinal axis of the drive device. 
     
     
         8 . The hand-held sanding machine according to  claim 1 , wherein the connecting housing unit further comprises an ejection port having a duct longitudinal axis, the ejection port arranged such that the duct longitudinal axis and a plane perpendicular to the rotation axis enclose an acute angle. 
     
     
         9 . The hand-held sanding machine according to  claim 1 , wherein the connecting housing unit further comprises at least two primary shells at least partially encompassing the fan in an assembly plane that is parallel to the rotation axis. 
     
     
         10 . The hand-held sanding machine according to  claim 1 , wherein the fan is asymmetrically configured for forming a transmission element of the sanding device. 
     
     
         11 . The hand-held sanding machine according to  claim 1 , wherein the fan has a blade assembly with a chamfer disposed so as to be transverse to the rotation axis and at least substantially parallel to a segment of the internal wall.