Toroidal continuously variable transmiision

Abstract

The object of the present invention is to provide compact toroidal type continuously variable transmission for a front engine front wheel drive vehicle, which employs geared neutral starting system. The toroidal type continuously variable transmission according to the present invention comprises an input shaft 11 whose one end is coupled with an engine, a primary shaft 12 into which said input shaft is fittingly inserted with play, a secondary shaft 13 which is disposed parallel with said shafts and whose engine side end is coupled with a differential gear unit 5, toroidal type continuously variable transmission mechanisms 20, 30 which are disposed on said primary shaft 12, a planetary gear mechanism 50 which is disposed on said secondary shaft 13, a low mode gear train 80 for coupling the input shaft 11 with a carrier 51 of the planetary gear mechanism 50, and a high mode gear train 90 for coupling a sun gear 52 with an output disk 34 of the continuously variable transmission mechanisms 20, 30, wherein said low mode gear train 80 is disposed on an opposite side end, with respect to the engine, of the input shaft 11.

Description

technical field [0001] The invention relates to a ring-type continuously variable transmission system, especially a continuously variable transmission structure for front-engine front-wheel drive vehicles adopting a meshing neutral start system. Background technique [0002] By arranging rollers for power transmission between the input and output discs and rotating the rotating body at varying inclinations so as to correspondingly change the contact point with each of the two discs in the radial direction, the toroidal continuously variable transmission The system can continuously change the transmission ratio between the input disc and the output disc, and the system is currently in practical use as a continuously variable transmission system for automobiles, as shown in Japanese Patent Unexamined Publication No. 6-101754, in which An engaged neutral start system is used in this continuously variable transmission. [0003] In this system, the continuously variable transmis...

AI Technical Summary

Problems solved by technology

Therefore, in order to avoid interference between the gear train and the differential gear set, they must be arranged at a certain interval in the axial direction, which increases the size of the transmission mechanism in the axial direction.

Especially in front-engine front-wheel drive vehicles with the axis of the engine and its transmission mechanism arranged transversely, the increase in the size of the axis direction makes the installation to the vehicle body and the layout design of the engine and transmission mechanism difficult.

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