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1. (WO2018099722) TRACTION TRANSMISSION AND DRIVE UNIT FOR A MOTOR VEHICLE

Pub. No.:    WO/2018/099722    International Application No.:    PCT/EP2017/079335
Publication Date: Fri Jun 08 01:59:59 CEST 2018 International Filing Date: Thu Nov 16 00:59:59 CET 2017
IPC: F16H 15/38
Applicants: VOLKSWAGEN AKTIENGESELLSCHAFT
Inventors: PETERSEN, Rainer
MÖCKEL, Jörg
Title: TRACTION TRANSMISSION AND DRIVE UNIT FOR A MOTOR VEHICLE
Abstract:
Traction transmission having a first and a second component transmission (26a, b) which are of mirror-symmetrical construction with respect to one another and are arranged axially adjacently in a housing (12), in each case comprising - an axially inner drive friction disc (28a, b) and an axially outer complementary friction disc (32a, b) which are arranged coaxially and can be rotated relative to one another about a transmission central axis, and - a set of friction rollers (40) which make non-positive contact between the friction discs (28a, b, 32a, b) and are mounted such that they can be rotated about in each case one roller axle (44), wherein the roller axles (44) are pivotably mounted in a manner which is spaced apart radially from the transmission central axis on a star-shaped spider (38a, b) which can be moved axially in relation to the transmission central axis, wherein the spiders (38a, b) are arranged on a common spider sleeve (50) and are coupled to one another at a variable spacing via an axially extending thread pairing (52), wherein - the complementary friction discs (32a, b) are arranged fixedly on a common output shaft (34) which is mounted in the housing such that it is fixed axially and can be rotated, - the spacing of the drive friction discs (28a, b) from one another can be varied by means of a spacing setting device (60), and - the spider sleeve (50) is mounted such that it can be displaced axially relative to the housing (12), wherein the first spider (38a) which is assigned to the first component transmission (26a) is connected fixedly to the housing (12) so as to rotate with it, the second spider (38b) which is assigned to the second component transmission (26b) can be rotated relative to the housing (12) by means of an angular position setting device (54b, 58), and the thread pairing (52) which couples the spiders (38a, b) is set up in such a way that a relative rotation of the spiders (38a, b) brings about a change in the spacing thereof.