Carrier stop for split ring planetary drive
AssigneeBorgWarner Inc.
InventorsDaniel BROWN, Chad MCCLOY
Life of this patent
Estimating the term…
Abstract
A split ring planetary drive with at least one travel end stop received in at least one pocket of a first ring gear. The travel end stop is moveable between a first stop position in which as the planetary drive rotates in a direction the travel end stop engages the stop on the planet carrier, preventing further rotation of the split ring planetary drive in the direction, and a second position in which the travel end stop does not engage the stop on the planet carrier. The travel end stop may be a deadbolt, a snap ring or pivoting pawl.
Claims15
A split ring planetary drive for adjusting relative phases of a first shaft and a second shaft, comprising:
- a sun gear rotatable around a sun axis, the sun gear comprising a plurality of sun gear teeth;
- a plurality of planetary gears arranged around the sun gear, each planetary gear comprising a plurality of planetary teeth maintaining the planetary gear in meshing engagement with the sun gear teeth;
- a planet carrier having a stop, the planet carrier being rotatable with the plurality of planetary gears;
- a first ring gear rotatable with the first shaft, the first ring gear comprising a plurality of first ring gear teeth maintaining the first ring gear in meshing engagement with the planetary gear teeth of each of the planetary gears;
- a second ring gear rotatable with the second shaft, the second ring gear comprising a plurality of second ring gear teeth maintaining the second ring gear in meshing engagement with the planetary gear teeth of each of the planetary gears;
- and
- at least one travel end stop received in at least one pocket of the first ring gear, the at least one travel end stop being moveable between a first stop position in which as the planetary drive rotates in a direction the travel end stop engages the stop on the planet carrier, preventing further rotation of the split ring planetary drive in the direction, and a second position in which the travel end stop does not engage the stop on the planet carrier.
A split ring planetary drive for adjusting relative phases of a first shaft and a second shaft, comprising:
- a sun gear rotatable around a sun axis, the sun gear comprising a plurality of sun gear teeth;
- a plurality of planetary gears arranged around the sun gear, each planetary gear comprising a plurality of planetary teeth around an axial portion, the planetary teeth being in meshing engagement with the sun gear teeth;
- a planet carrier rotatable with and connected to the plurality of planetary gears;
- a first ring gear rotatable with the first shaft, the first ring gear comprising a plurality of first ring gear teeth in meshing engagement with the planetary gear teeth of each of the planetary gears;
- a second ring gear rotatable with the second shaft, the second ring gear comprising a plurality of second ring gear teeth in meshing engagement with the planetary gear teeth of each of the planetary gears;
- and
- at least one travel end stop received in a pocket of the first ring gear, the pocket having a ramped slot, the travel end stop being moveable between a first stop position in which the first travel end stop engages with the ramped slot and an axial portion of the planet carrier, preventing rotation of the split ring planetary drive in a direction, and a second position in which the travel end stop does not engage the ramped slot or the axial portion of the planetary gear.
A device for adjusting relative phases of a first shaft and a second shaft, the device comprising:
- a member which rotates more than a revolution to effect a change in the phase between the first shaft and the second shaft, the member comprising an engagement surface;
- and
- a stop piece moveable from a first position to a second position dependent on a phase of the first shaft relative to the second shaft;
- wherein the stop piece is received in a pocket of the first or second shaft;
- wherein a range of rotation of the first shaft and the second shaft is less than one revolution;
- and
- wherein the engagement surface engages the stop piece to limit a range of motion of the first shaft relative to the second shaft.
Dependencies are inferred from the claim text.