Component for a motor vehicle

Abstract

Disclosed is a component ( 1 ), particularly a crossbeam that is to be disposed between the A-shaped columns of a motor vehicle. Said component ( 1 ) comprises an essentially tubular or other elongate metallic basic member ( 1 ) to which a plastic ( 7 ) channel ( 2 ), especially a ventilation channel, is connected at least in part within the profile of said basic member ( 1 ), and a joining part ( 4 ) that is mechanically connected to the basic member ( 1 ) or a part rigidly connected thereto and is used for fixing another component. Said joining part ( 4 ) forms a material bond with the basic member ( 1 ) or a part rigidly connected thereto at a joining point ( 5 ), thus creating an intermediate area ( 12 ) so as to reduce heat transfer between the joining part ( 4 ) and the plastic ( 7 ) of the channel ( 2 ) and/or drain away a gas produced during the joining process.

1 . A component, in particular crossmember, for arranging between A-pillars of a motor vehicle, with a metallic basic body which has essentially a tubular form or another elongated form and to which a duct, in particular ventilation duct, of plastic is connected at least partially within the profile of the basic body, and with a joining part which is connected mechanically to the basic body or to a part connected rigidly thereto and is used for fastening a further component, characterized in that the joining part is connected at a joining point with a cohesive material joint to the basic body or to a part connected rigidly thereto with an intermediate region being formed in order to reduce the heat transfer between the joining part and the plastic of the duct and/or to conduct away a gas produced during the joining.  
   
   
       2 . The component as claimed in  claim 1 , wherein the duct is connected to the basic body by means of plastic injection molding in a strength-transmitting manner.  
   
   
       3 . The component as claimed in  claim 1 , wherein the joining point is arranged directly on the basic body.  
   
   
       4 . The component as claimed in  claim 3 , wherein in the region provided for the fastening of the joining part, the basic body has an embossed structure which is designed in such a manner that the wall of the duct, which is otherwise formed from plastic, is formed in the intermediate region adjoining the joining point from the material of the basic body.  
   
   
       5 . The component as claimed in  claim 4 , wherein the sum of the embossed depth (p) of the embossed structure and of the wall thickness (a) of the basic body corresponds at least approximately to the wall thickness (d) of the duct.  
   
   
       6 . The component as claimed in  claim 3 , wherein the joining point is formed on a bent-outward part of the basic body, which bent-outward part points away from the duct.  
   
   
       7 . The component as claimed in  claim 1  wherein the joining point is arranged on an inset part connected rigidly to the basic body.  
   
   
       8 . The component as claimed in  claim 1 , wherein on its outer side facing the basic body the duct has a surface structure forming the intermediate region.  
   
   
       9 . The component as claimed in  claim 1 , wherein the jointing part is connected to the basic body at the joining point by means of a low-heat joining method.