Angle Grinder

Abstract

The present invention relates to an angle grinder having a front transmission housing for enclosing a transmission arrangement which has a closing surface that faces away from a free end of the tool spindle, and wherein the maximum distance between the closing surface and an end face of the free end of a tool spindle defines a height of the transmission housing, and wherein the height has a predefined ratio to a diameter of a disc-shaped tool, of about 1 to about 5.

1 . An angle grinder comprising: a motor for driving a tool spindle, and wherein the tool spindle is arranged, by means of an angle transmission arrangement, at an angle in relation to a driving shaft of the motor, and wherein the angle transmission arrangement is enclosed, at least in part, in an associated transmission housing, and from which extends a free end of the tool spindle, to which a disc-shaped tool, which can rotate about a central longitudinal axis of the tool spindle, can be fastened by means of a tool flange,
 and wherein at least a front of the transmission housing of the angle transmission arrangement has a closing surface that faces away from the free end of the tool spindle, and wherein the maximum distance between the closing surface and an end face of the free end of the tool spindle defines a height of the transmission housing, and wherein the height has a predefined ratio to the diameter of the disc-shaped tool, of maximally 1 to 2, and preferably of 2 to 5.   
     
     
         2 . An angle grinder as claimed in  claim 1 , and wherein the closing surface of the tool flange that faces in a direction towards the tool spans a notional plane that intersects the motor, at least partially. 
     
     
         3 . An angle grinder according to  claim 2 , and wherein a tangent that is defined as a line extending from a circumferential edge of the disc-shaped tool and which is further oriented against the transmission housing, and encloses, together with the notional plane, an angle of a maximally angular value of less than about 40°, and preferably less than 34°. 
     
     
         4 . An angle grinder as claimed in  claim 3 , and wherein a radius of the disc-shaped tool is smaller than the a radial dimension of the transmission housing when measured from the central longitudinal axis of the tool spindle. 
     
     
         5 . Angle An angle grinder as claimed in  claim 4 , and wherein the angle transmission arrangement has a crown wheel, and wherein the crown wheel is substantially hat-shaped, and further has a full-perimeter flange and a receiving portion that forms the hat shape, and wherein a toothing of the crown wheel is provided on the flange, and wherein the receiving portion is suitable for receiving at least one part of a bearing means that rotatably supports the tool spindle relative to the transmission housing. 
     
     
         6 . An angle grinder as claimed in  claim 5 , and wherein the toothing of the crown wheel is arranged on a side of the crown wheel that faces towards the free end of the tool spindle. 
     
     
         7 . An angle grinder as claimed in  claim 6 , and wherein the opening of the receiving portion of the crown wheel is oriented away from the free end of the tool spindle. 
     
     
         8 . An angle grinder as claimed in  claim 5 , and wherein the toothing of the crown wheel is arranged on a side of the crown wheel that faces away from the free end of the tool spindle. 
     
     
         9 . An angle grinder as claimed in  claim 4 , and wherein the angle transmission arrangement has a crown wheel which is substantially disc-shaped, and wherein a toothing, which is arranged on one side of the crown wheel, is provided at the outer edge of the crown wheel, and wherein at least one part of a bearing means that rotatably supports the tool spindle relative to the transmission housing, and wherein all parts of the bearing means are arranged on the same side of the crown wheel.