Charging device

Abstract

The invention relates to a charging device ( 1 ), more preferably an exhaust gas turbocharger for a motor vehicle, with a turbine housing ( 3 ) adjoining a bearing housing ( 2 ), in which a variable turbine geometry ( 4 ) is arranged. It is substantial for the invention that a one-piece disc spring ( 5 ) of plate with a bent over edge region is provided, wherein the bent over edge region forms a spring leg ( 6 ), while a protective leg ( 7 ) is designed as heat protection for the spring leg ( 6 ), that the spring leg ( 6 ) on the one hand supports itself on the bearing housing ( 2 ) and on the other hand on the variable turbine geometry ( 4 ), preloading the latter against the turbine housing ( 3 ).

1 . An exhaust gas turbocharger device comprising: a turbine housing adjoining a bearing housing, in which a variable turbine geometry is arranged, such that a one-piece disc spring includes at least one bent over edge region, wherein the bent over edge region forms a spring leg, and a protective leg as heat protection for the spring leg, such that the spring leg supports itself on at least one of the bearing housing and on the variable turbine geometry, preloading the latter against at least one of the turbine housing, a cover disc and a cage. 
     
     
         2 . The exhaust gas turbocharger device according to  claim 1 , wherein the bent over edge region is closed in a circumferential direction. 
     
     
         3 . The exhaust gas turbocharger device according to  claim 1 , wherein the bent over edge region is interrupted and comprises a plurality of straps in a circumferential direction. 
     
     
         4 . The charging device according to  claim 1 , wherein the bent over edge region is arranged in at least one of outside and inside. 
     
     
         5 . The charging device according to  claim 1 , wherein the bent over edge region is produced through at least one of flanging and folding. 
     
     
         6 . The charging device according to  claim 1 , wherein the variable turbine geometry includes a blade bearing race including a contact surface which the disc spring abuts. 
     
     
         7 . The charging device according to  claim 1 , wherein at least one of the spring leg and the protective leg supports itself on the bearing housing of the charging device. 
     
     
         8 . The charging device according to  claim 1 , wherein the disc spring is a heat shield. 
     
     
         9 . The charging device according to  claim 2 , wherein the bent over edge region is arranged in at least one of outside and inside. 
     
     
         10 . The charging device according to  claim 2 , wherein the bent over edge region is produced through at least one of flanging and folding. 
     
     
         11 . The charging device according to  claim 2 , wherein the variable turbine geometry includes a blade bearing race including a contact surface, having a radial stage which the disc spring abuts. 
     
     
         12 . The charging device according to  claim 2 , wherein at least one of the spring leg and the protective leg supports itself on the bearing housing of the charging device. 
     
     
         13 . The charging device according to  claim 2 , wherein the disc spring is a heat shield. 
     
     
         14 . The charging device according to  claim 3 , wherein the bent over edge region is arranged in at least one of outside and inside. 
     
     
         15 . The charging device according to  claim 3 , wherein the bent over edge region is produced through at least one of flanging and folding. 
     
     
         16 . The charging device according to  claim 3 , wherein the variable turbine geometry includes a blade bearing race including a contact surface, more preferably a radial stage which the disc spring abuts. 
     
     
         17 . The charging device according to  claim 3 , wherein at least one of the spring leg and the protective leg supports itself on the bearing housing of the charging device. 
     
     
         18 . The charging device according to  claim 3 , wherein the disc spring is a heat shield. 
     
     
         19 . The charging device according to  claim 4 , wherein the bent over edge region is produced through at least one of flanging and folding. 
     
     
         20 . The charging device according to  claim 4 , wherein the variable turbine geometry includes a blade bearing race including a contact surface, having a radial stage which the disc spring abuts.