Planetary gear set
AssigneeAisin Aw Co., Ltd.
InventorsMasahiro Hayabuchi, Masaaki Nishida, Satoru Kasuya, Hiroshi Katou, Yukio Hiramoto, Tomohisa Miyamoto, Tatsuya Iida, Masahiro Yamaguchi
Life of this patent
Estimating the term…
Abstract
A planetary gear set including a plurality of pinions meshing with a sun gear and a carrier C that shaft-supports the pinions. The carrier has an annular peripheral wall that extends entirely around outer peripheries of the plurality of pinions. Thin-wall portions receded at a radially inner side are formed in the annular peripheral wall, at circumferential-direction positions corresponding to the positions of the pinions.
Claims14
A planetary gear set, comprising:
- a plurality of pinions meshing with a sun gear;
- and
- a carrier that shaft-supports the pinions, wherein the carrier has an annular peripheral wall that extends entirely around outer peripheries of the plurality of pinions the annular peripheral wall has thin-wall portions formed by recesses in a radially inner side, at a circumferential-direction position corresponding to positions of the pinions and the annular peripheral wall has, on an outer periphery thereof, a spline for supporting a friction member in a rotation stopping fashion and teeth which are absent in the thin-wall portions, with an outside diameter of the thin-wall portions equal to an outside diameter of the teeth.
A planetary carrier, comprising:
- shaft supported intermeshing gear pairs with a first pinion that meshes with only a sun gear, and a second pinion that meshes with at least a ring gear;
- and
- two end portions that shaft-support a first end and a second end of each pinion that are connected by a bridge portion that extends in a direction of an axis, wherein the bridge portion has a column wall portion that fills a space between the first pinion of a first gear pair and the second pinion of a second gear pair, and a plate wall portion that extends from the column wall portion in a direction of a circumference of the carrier, and within a space between the second pinion of the first gear pair and the second pinion of the second gear pair, and outwardly of the first pinion of the first gear pair.
A planetary carrier, comprising:
- shaft supported intermeshing gear pairs of a first pinion that meshes with only a sun gear, and a second pinion that meshes with at least a ring gear;
- two end portions that shaft-support one end and another end of each pinion are connected by a bridge portion that extends in a direction of an axis, wherein the first pinion has a smaller diameter than the second pinion, and the bridge portion is formed by a wall that extends in a direction of a circumference of the carrier, within a space between the second pinion of the first gear pair and the second pinion of the second sear pair and outwardly of the first pinion of the first gear pair.
Dependencies are inferred from the claim text.