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US 9,518,642 B1Granted
Hub reduction gear of an axle
AssigneeMeritor Heavy Vehicle Systems Cameri SpA
InventorWagner Yukio Hirao
Life of this patent
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Abstract
A hub reduction gear of a drive axle and a method of providing a hub reduction gear. The hub reduction gear may include a plurality of bevel planet gears in mesh with a bevel sun gear, a planet carrier adapted to drive a vehicle wheel; and an internal bevel gear annulus in mesh with the bevel planet gears and adapted for connection to an axle side shaft casing.
Claims21
A drive axle comprising:
- a hub reduction gear that includes:
- a bevel sun gear that is rotatable about an axis and is adapted to be driven by an axle side shaft;
- a plurality of bevel planet gears in mesh with the bevel sun gear;
- a planet carrier adapted to drive a vehicle wheel;
- and
- an internal bevel gear annulus in mesh with the bevel planet gears and adapted for connection to an axle side shaft casing, wherein the internal bevel gear annulus is an internal gear having teeth that face toward the axis in which a radially outermost potion of each tooth is disposed further from the axis and from a plane of rotation than a radially innermost portion of each tooth, wherein the plane of rotation is disposed perpendicular to the axis and is disposed proximate a side of the internal bevel gear annulus that is disposed opposite the teeth.
3 more elements
A method of providing a hub reduction gear for a vehicle drive axle, the hub reduction gear having a ratio selectable in a range of 1.5:1 to 6:1, the method comprising:
- providing a bevel sun gear that is rotatable about an axis;
- providing a plurality of bevel gears for each ratio in the range, wherein the plurality of bevel gears mesh with the bevel sun gear and are rotatable about planet gear axes that are disposed at an angle that is non-perpendicular and non-parallel with respect to the axis, the plurality of bevel gears including an internal bevel gear annulus for ratios in the range of 3:1 to 6:1, wherein the internal bevel gear annulus is an internal gear having teeth that face toward the axis in which a radially outermost potion of each tooth is disposed further from the axis and from a plane of rotation than a radially innermost portion of each tooth, wherein the plane of rotation is disposed perpendicular to the axis.
A drive axle comprising:
- a hub reduction gear that includes:
- a bevel sun gear that is rotatable about an axis and is driven by an axle side shaft that extends through a side shaft housing;
- a planet pin support that is disposed on the axle side shaft between the bevel sun gear and the side shaft housing, wherein the planet pin support is spaced apart from the side shaft housing and the bevel sun gear;
- a plurality of bevel planet gears in mesh with the bevel sun gear wherein the plurality of bevel planet gears are rotatable about planet gear axes that are disposed in a non-perpendicular angle with respect to the axis;
- a planet carrier adapted to drive a vehicle wheel;
- and
- an internal bevel gear annulus in mesh with the bevel planet gears and adapted for connection to an axle side shaft casing, wherein the internal bevel gear annulus is an internal gear having teeth that face toward the axis in which a radially outermost potion of each tooth is disposed further from the axis and from a plane of rotation than a radially innermost portion of each tooth, wherein the plane of rotation is disposed perpendicular to the axis.
4 more elements
Dependencies are inferred from the claim text.