Planetary gear train transmission
AssigneeRedex
InventorsPierre Casanova, Nicolas Pichon, Bruno Grandjean
Life of this patent
Estimating the term…
Abstract
A planetary gear train transmission includes: an outer case fitted with a ring gear having internal teeth; at least one outlet planet carrier having planet gears meshing with the ring gear, and with a central, sun gear; an inlet gear and an inlet bearing provided in the case; and an outlet bearing from the transmission provided in the case; the transmission including an outlet member coupled to rotate with the outlet planet carrier and co-operating with the planet carrier to form elements for preloading the outlet bearing.
Claims9
A planetary gear train transmission, comprising:
- an outer case fitted with a ring gear having internal teeth;
- at least one outlet planet carrier having planet gears meshing with said ring gear, and with a central, sun gear;
- an inlet gear and an inlet bearing provided in the case;
- and
- an outlet roll or ball bearing from the transmission provided in the case;
- wherein the transmission includes an outlet member coupled to rotate with the outlet planet carrier and co-operating with the planet carrier to form means for preloading the outlet bearing.
A planetary gear train transmission, comprising:
- a pre-assembled subassembly, including a first case element (7) forming an outer ring of an outlet bearing (9), the outlet bearing supporting an outlet member (10), and an annular spacer (11) on a first axial end of the outlet bearing;
- a second case element fitted with a ring gear (3) having internal teeth;
- an outlet planet carrier (4) having planet gears;
- and
- a sun gear, wherein,
- the planet carrier and the planet gears are fitted to the outlet member of the subassembly to provide axial preloading to the outlet bearing in a manner determined by a thickness of the annular spacer,
- the planet gears are received in the ring gear,
- the sun gear is fitted in the center of the planet gears, and
- the outlet member and the planet carrier are held together axially by at least one fastener internal to the sub-assembly.
Dependencies are inferred from the claim text.