Device for Operating an Auxiliary Assembly of a Vehicle, in Particular of a Utility Vehicle

Abstract

The present invention relates to a device for operating an auxiliary assembly ( 16 ), comprising a housing ( 14 ), of a vehicle, in particular of a utility vehicle, having a drive unit ( 12 ) which comprises a further housing ( 18 ) and has the purpose of making available a torque, a shaft ( 30 ) for transmitting the torque from the drive unit ( 12 ) to the auxiliary assembly ( 16 ), wherein the shaft ( 30 ) projects into the housing ( 14 ) of the auxiliary assembly ( 16 ) or into the further housing ( 18 ) of the drive unit ( 12 ). Furthermore, the drive unit ( 12 ) and the auxiliary assembly ( 16 ) form a common coolant circuit ( 52 ) for cooling the drive unit ( 12 ) and the auxiliary assembly ( 16 ).

1 . A device for operating an auxiliary assembly ( 16 ), comprising a housing ( 14 ), of a vehicle, in particular of a utility vehicle,
 having a drive unit ( 12 ), which comprises a further housing ( 18 ) and serves to provide a torque,   a shaft ( 30 ) for transmitting the torque from the drive unit ( 12 ) to the auxiliary assembly ( 16 ),   characterized in that the shaft ( 30 ) projects into the housing ( 14 ) of the auxiliary assembly ( 16 ) or into the further housing ( 18 ) of the drive unit ( 12 ).   
     
     
         2 . The device as claimed in  claim 1 ,
 characterized in that the shaft ( 30 ) is supported in the drive unit ( 18 ) by a first section ( 36 ) with the aid of bearings ( 34 ), and a second section ( 38 ) of the shaft projects from the drive unit ( 18 ) and into the housing ( 14 ) of the drive unit ( 12 ), and   the shaft ( 30 ) is connected positively or frictionally to a rotatable component ( 20 ) of the drive unit ( 12 ).   
     
     
         3 . The device as claimed in  claim 1 ,
 characterized in that the drive unit ( 12 ) and the auxiliary assembly ( 16 ) are arranged directly adjacent to one another.   
     
     
         4 . The device as claimed in  claim 2  or  3 ,
 characterized in that the rotatable component ( 20 ) is supported by the second section ( 38 ) and by a further bearing ( 34 ), which is arranged in the housing ( 14 ) of the drive unit ( 12 ). 
 
     
     
         5 . The device as claimed in one of the preceding claims, the device having a lubricant delivery means ( 86 ) for delivering a lubricant to and in a lubricant circuit,
 characterized in that the lubricant delivery means ( 86 ) can be driven by means of the shaft ( 30 ).   
     
     
         6 . The device as claimed in  claim 5 ,
 characterized in that the lubricant delivery means ( 86 ) is designed as an oil pump ( 90 ), in particular as a gear pump ( 92 ) or screw pump ( 94 ).   
     
     
         7 . The device as claimed in  claim 5  or  6 ,
 characterized by a storage section ( 82 ) for storing and holding ready the lubricant. 
 
     
     
         8 . The device as claimed in one of the preceding claims,
 characterized by a bayonet joint ( 48 ) for connecting and centering the drive unit ( 12 ) with respect to the auxiliary assembly ( 16 ).   
     
     
         9 . The device as claimed in one of  claims 1  to  7 ,
 characterized by a flange unit ( 46 ) for connecting the drive unit ( 12 ) to the auxiliary assembly ( 16 ). 
 
     
     
         10 . The device as claimed in  claim 9 ,
 characterized in that the flange unit ( 46 ), the drive unit ( 12 ) and the auxiliary assembly ( 16 ) are centered with respect to one another.   
     
     
         11 . The device as claimed in one of  claims 1  to  7 ,
 characterized in that the drive unit ( 12 ) is connected to the auxiliary assembly ( 16 ) by means of the shaft ( 30 ). 
 
     
     
         12 . The device as claimed in one of the preceding claims or the preamble of  claim 1 ,
 characterized in that, after connection, the drive unit ( 12 ) and the auxiliary assembly ( 16 ) form a common coolant circuit ( 52 ) for cooling the drive unit ( 12 ) and the auxiliary assembly ( 16 ).   
     
     
         13 . The device as claimed in  claim 11 ,
 characterized in that the coolant circuit ( 52 ) has a delivery means ( 62 ), in particular a pump ( 64 ), for delivering a coolant, in particular water, in the coolant circuit ( 52 ), and a heat exchanger ( 66 ) for dissipating heat from the coolant circuit ( 52 ).   
     
     
         14 . The device as claimed in one of the preceding claims,
 characterized in that the drive unit ( 12 ) is designed as an electric motor ( 22 ) and the auxiliary assembly ( 16 ) is designed as a compressor ( 26 ) for producing compressed air, as an air conditioning compressor ( 27 ) for an air conditioning system for air conditioning the vehicle or as a power steering pump ( 29 ) for the purpose of assisting the steering of the vehicle, the electric motor ( 22 ) comprising the rotatable component ( 20 ), which is designed as a rotor ( 40 ), and windings ( 42 ).   
     
     
         15 . The device as claimed in one of the preceding claims,
 characterized in that the electric motor ( 22 ) is configured as an asynchronous motor ( 24 ) or servo motor and has a servo-, frequency converter or inverter ( 50 ), in particular a multi-frequency converter or inverter, which can be arranged in any desired manner.   
     
     
         16 . The device as claimed in  claim 14  or  15 ,
 characterized in that the compressor ( 26 ) is designed as a piston-type compressor ( 28 ) with a crankshaft ( 32 ). 
 
     
     
         17 . The device as claimed in one of the preceding claims,
 characterized in that the housing ( 14 ) and the further housing ( 18 ) are of one-piece design.   
     
     
         18 . A vehicle, in particular a utility vehicle, comprising a device as claimed in one of the preceding claims.