Patent ID: 8978502
Filing Date: 2015-03-17
Classification: F16H,Y10T

Abstract:
1. A transmission drive unit ( 10 ; 40 ; 50 ; 70 ) comprising an adaptor element ( 22 ; 22 a ; 53 ; 73 ) which is composed of plastic and via which a torque is introduced by an input element ( 29 ), and an output element ( 12 ; 12 a ; 51 ; 72 ) which is composed of metal, wherein the adaptor element ( 22 ; 22 a ; 53 ; 73 ) and the output element ( 12 ; 12 a ; 51 ; 72 ) are coupled directly to each other and are rigidly connected, wherein the adaptor element ( 22 ; 22 a ; 53 ; 73 ) is an injection molded part which is formed by at least partial insert molding of the output element ( 12 ; 12 a ; 51 ; 72 ), wherein the output element ( 12 ; 12 a ; 51 ; 72 ) serves as a bearing element, wherein the adaptor element ( 22 ) is a worm wheel, wherein the output element ( 12 ) is in the form of a drive output pinion with an external metal toothing ( 13 ), wherein a unit consisting of the output pinion and worm wheel is arranged, with the exception of a region of the output pinion, within a transmission housing ( 31 ) made of plastic, the transmission housing ( 31 ) having a housing lower part ( 32 ) which centrally has a bearing journal ( 33 ) for the radial mounting of the worm wheel in the transmission housing ( 31 ), and wherein the output element ( 12 ) includes an inner wall that defines a central opening.