Combined blower/rotor for a cooling fan of a motor vehicle

Abstract

The invention relates to a combined blower/rotor ( 1 ) for a cooling fan of a motor vehicle, especially one having a reduced fan output. Said combined blower/rotor comprises a rotor ( 10 ) of an electric motor ( 30 ) and a blower ( 20 ) fastened to the rotor ( 10 ), said blower ( 20 ) being fixed to the rotor ( 10 ) without screws.

1 . A fan-rotor combination for a cooling blower of a motor vehicle, having a rotor ( 10 ) of an electric motor ( 30 ) and a fan ( 20 ) fastened to the rotor ( 10 ), characterized in that the fan ( 20 ) is fixed to the rotor ( 10 ) without screws. 
     
     
         2 . The fan-rotor combination as claimed in  claim 1 , characterized in that the fan ( 20 ) is fixed to the rotor ( 10 ) by means of a positively locking connection, which may have non-positively locking attributes. 
     
     
         3 . The fan-rotor combination as claimed in  claim 1 , characterized in that a connecting partner ( 100 ,  200 ), which is required for the fastening of the fan ( 20 ) to the rotor ( 10 ), of one of the fan ( 20 ) and the rotor ( 10 ) is a constituent part of the one of the fan ( 20 ) and/or of and the rotor ( 10 ). 
     
     
         4 . The fan-rotor combination as claimed in  claim 1 , characterized in that the connecting devices ( 100 ,  200 ) required for the fastening of the fan ( 20 ) to the rotor ( 10 ) extend through one another and are secured. 
     
     
         5 . The fan-rotor combination as claimed in  claim 1 , characterized in that the fastening of the fan ( 20 ) to the rotor ( 10 ) takes place on at least one of an axial portion ( 13 ) and a radial portion ( 14 ) of the rotor ( 10 ). 
     
     
         6 . The fan-rotor combination as claimed in  claim 1 , characterized in that the electric motor ( 30 ) is a external-rotor electric motor ( 30 ). 
     
     
         7 . The fan-rotor combination as claimed in  claim 1 , characterized in that one of the fan ( 20 ) and the rotor has a detent hook ( 200 ,  210 ) which engages into a corresponding detent recess ( 100 ,  110 ) of the other of the fan and the rotor ( 10 ). 
     
     
         8 . The fan-rotor combination as claimed in  claim 1 , characterized in that one of the fan ( 20 ) and the rotor has a snap-in hook ( 200 ,  220 ) which is snapped into a corresponding recess ( 100 ,  120 ) of the other of the fan and the rotor ( 10 ), wherein a locking position of the snap-in hook ( 200 ,  220 ) is secured. 
     
     
         9 . The fan-rotor combination as claimed in  claim 1 , characterized in that the fan ( 20 ) and the rotor ( 10 ) are fixed to one another by means of a bayonet locking connection ( 100 ,  130 ;  200 ,  230 ). 
     
     
         10 . The fan-rotor combination as claimed in  claim 1 , characterized in that one of the fan ( 20 ) and the rotor has a fastening projection ( 200 ,  240 ) which projects through a passage recess ( 100 ,  140 ) in the other of the fan and the rotor ( 10 ), and that a portion of the fastening projection ( 200 ,  240 ) which projects through the passage recess ( 100 ,  140 ) is deformed. 
     
     
         11 . The fan-rotor combination as claimed in  claim 1 , characterized in that one of the fan and the rotor ( 10 ) has a fastening lug ( 100 ,  150 ) which projects through a passage recess ( 200 ,  250 ) in the other of the fan ( 20 ) and the rotor, and that a portion of the fastening lug ( 200 ,  240 ) which projects through the passage recess ( 200 ,  250 ) is deformed. 
     
     
         12 . The fan-rotor combination as claimed in  claim 1 , characterized in that the fan ( 20 ) has a thread ( 200 ,  260 ) which is screwed onto a thread ( 100 ,  160 ) of the rotor ( 10 ). 
     
     
         13 . The fan-rotor combination as claimed in  claim 1 , characterized in that the fan-rotor combination is for a cooling blower with low blower power. 
     
     
         14 . The fan-rotor combination as claimed in  claim 1 , characterized in that the fan ( 20 ) is fixed to the rotor ( 10 ) by means of an easily detachable positively locking connection, which may have non-positively locking attributes. 
     
     
         15 . The fan-rotor combination as claimed in  claim 3 , characterized in that the connecting partner ( 100 ,  200 ) is a materially integral constituent part of the one of the fan ( 20 ) and the rotor ( 10 ). 
     
     
         16 . The fan-rotor combination as claimed in  claim 6 , characterized in that the electric motor ( 30 ) is an electronically commutated external-rotor electric motor ( 30 ). 
     
     
         17 . The fan-rotor combination as claimed in  claim 8 , characterized in that snap-in hook ( 200 ,  220 ) is a bending beam and wherein a locking position of the snap-in hook ( 200 ,  220 ) is secured by means of a securing pin ( 200 ,  222 ). 
     
     
         18 . The fan-rotor combination as claimed in  claim 9 , characterized in that the bayonet hooks ( 200 ,  230 ) of the bayonet locking connection ( 100 ,  130 ;  200 ,  230 ) are secured by means of securing pins ( 200 ,  232 ). 
     
     
         19 . The fan-rotor combination as claimed in  claim 11 , characterized in that the portion of the fastening lug ( 200 ,  240 ) which projects through the passage recess ( 200 ,  250 ) is bent over. 
     
     
         20 . The fan-rotor combination as claimed in  claim 1 , characterized in that the fan ( 20 ) has an internal thread ( 200 ,  260 ) which is screwed onto an external thread ( 100 ,  160 ) of the rotor ( 10 ).