Geared transmission unit
AssigneeToyota Jidosha Kabushiki Kaisha
InventorHiroshi Isono
Life of this patent
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Abstract
A geared transmission unit in which a range of a speed ratio is widened without increasing a size of the transmission unit. The geared transmission unit comprises: a carrier coupled to the first shaft; a first pinion gear that is supported by the carrier; a first ring gear formed on a stationary member to be meshed with the first pinion gear; a first sun gear meshing with the first pinion gear; a second sun gear rotated integrally with the first sun gear; a second pinion gear supported by the carrier while being meshed with the second sun gear; a third pinion gear rotated integrally with the second pinion gear; and a second ring gear coupled to the second shaft while being meshed with the third pinion gear.
Claims4
A geared transmission unit that transmits torque between a first shaft and a second shaft while amplifying or reducing the torque, comprising:
- a carrier that is coupled to the first shaft;
- a first pinion gear that is supported by the carrier in a rotatable manner;
- a first ring gear that is formed on a predetermined stationary member to be meshed with the first pinion gear;
- a first sun gear that meshes with the first pinion gear;
- a second sun gear that is rotated integrally with the first sun gear;
- a second pinion gear that is supported in a rotatable manner by the carrier while being meshed with the second sun gear;
- a third pinion gear that is rotated integrally with the second pinion gear;
- and
- a second ring gear that is coupled to the second shaft while being meshed with the third pinion gear.
Dependencies are inferred from the claim text.