Epicyclic reducer for a wheel hub and vehicle
AssigneeIveco S.P.A.
InventorJose Francivaldo Pereira Lemos
Life of this patent
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Abstract
The invention relates to an epicyclic reducer for a vehicle hub that includes: a housing; a sun gear arranged in the housing that includes sun teeth and is configured for coupling to an input; a plurality of planet gears, each of which includes planet teeth meshed with some of the sun teeth; a planet carrier that couples the planet gears to each other and is configured as an output; and a ring gear that includes ring teeth meshed with some of the planet teeth of each of the planet gears. The ring gear can be moved within the housing between a reduction position in which the planet gears are configured to rotate relative to the ring gear, and a direct drive position in which the ring gear is constrained to rotate with the planet gears.
Claims17
An epicyclic reducer for a wheel hub characterised in that it comprises:
- a sun gear (220) disposed in a housing (211) that comprises sun teeth (221) and is configured to couple to an input (105);
- the housing;
- a plurality of planetary gears, each comprising planet teeth meshed with some of the sun teeth;
- a planetary carrier that couples planetary gears together and is configured as an output;
- a ring gear comprising ring teeth meshed with some of the planet teeth of each of the planetary gears, the ring gear being displaceable within the housing between a reduction position where the planetary gears are configured to spin relative to the ring gear and a direct drive position where the ring gear is rotatably locked with the planetary gears;
- and
- a biaser acting on the ring gear to urge the ring gear toward the reduction position.
A vehicle comprising:
- a chassis;
- an engine carried by the chassis;
- a gearbox configured for coupling to the engine;
- a drive shaft rotatably coupled to the gearbox;
- an axle shaft rotatably coupled to the drive shaft;
- and
- a wheel hub carried by the chassis and comprising an epicyclic reducer, a sun gear of the epicyclic reducer being rotatably coupled to the axle shaft:
- a housing;
- the sun gear contained in the housing that comprises sun teeth and is rotatably coupled to the axle shaft;
- a plurality of planetary gears, each comprising planet teeth meshed with some of the sun teeth;
- a planetary carrier that couples planetarLgears together and is configured as an output;
- a ring gear comprising ring teeth meshed with some of the planet teeth of each of the planetary gears, the ring gear being displaceable within the housing between a reduction position in which the planetary gears are configured to rotate relative to the ring gear and a direct drive position where the ring gear is rotatable locked onto the planetary gears;
- and
- a biaser that acts on the ring gear to propel the latter towards the reduction position.
Dependencies are inferred from the claim text.