Motor vehicle transmission with a toroidal variable-speed drive unit
AssigneeDaimlerChrysler AG
InventorsWolfgang Elser, Steffen Henzler, Dinh Cuong Nguyen
Life of this patent
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Abstract
A motor vehicle transmission includes a toroidal variable-speed drive unit. The drive unit includes at least an input shaft, a hollow shaft, two driving discs, and a driven disc. The two driving discs are connected fixedly in terms of rotation to one another with the input shaft. The driven disc is connected fixedly in terms of rotation to the hollow shaft arranged concentrically to the input shaft. The hollow shaft is supported axially, at least in one direction, with respect to a transmission case by a bearing.
Claims28
A motor vehicle transmission comprising:
- a toroidal variable-speed drive unit including at least
- an input shaft;
- a hollow shaft;
- two driving discs which are connected fixedly in terms of rotation to one another with the input shaft;
- and
- a driven disc which is connected fixedly in terms of rotation to the hollow shaft arranged concentrically to the input shaft, wherein the hollow shaft is supported axially, at least in one direction, with respect to a transmission case by a bearing,
- wherein an end of the hollow shaft is connected fixedly in terms of rotation to the driven disc arranged axially between the two driving discs, and the other end of the hollow shaft is connected to a transmission member of an intermediate transmission;
- wherein one of the driving discs is mounted rotatably and concentrically on the hollow shaft axially between the driven disc and the transmission member;
- and
- wherein the bearing is arranged axially within an interspace between the one driving disc and the driven disc and is supported on the hollow shaft.
A method of making motor vehicle transmission, the method comprising:
- providing a toroidal variable-speed drive unit including at least an input shaft, a hollow shaft, two driving discs which are connected fixedly in terms of rotation to one another with the input shaft, and a driven disc which is connected fixedly in terms of rotation to the hollow shaft arranged concentrically to the input shaft;
- and
- supporting the hollow shaft axially, at least in one direction, with respect to a transmission case by a bearing;
- further comprising:
- fixedly connecting an end of the hollow shaft in terms of rotation to the driven disc arranged axially between the two driving discs;
- connecting the other end of the hollow shaft to a transmission member of an intermediate transmission;
- rotatably and concentrically mounting one of the driving discs on the hollow shaft axially between the driven disc and the transmission member;
- and
- axially arranging the bearing within an interspace between the one driving disc and the driven disc and supporting the bearing on the hollow shaft.
Dependencies are inferred from the claim text.