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US 11,692,599 B1Granted
Dual direction, selectable one-way clutch
AssigneeSchaeffler Technologies AG & Co. KG
InventorJohn Brevick
Life of this patent
Estimating the term…
Abstract
A dual direction, selectable one-way clutch is provided that can be set to be fully free to rotate in both directions, can be fully locked in both directions, and can provide a one-way clutch option in both directions. The actuator to change the clutch state is an electromechanical and only requires power to change a coupling state of the clutch. The clutch is formed by two sets of gear plates and corresponding engagement pawls that are engageable/disengageable in order to provide for the different locked and one-way clutch states. One or more actuator rings are provided to activate or disengage the pawls.
Claims20
A dual direction, selectable one-way clutch, comprising:
- first and second concentric shafts;
- a first gear plate rotationally fixed to the first shaft, the first gear plate including a plurality of first teeth on a radially outer surface, each of the first teeth having a drive engagement profile on a first tooth flank that faces in a first rotational direction and a cam profile on a second tooth flank;
- a second gear plate rotationally fixed to the first shaft, the second gear plate including a plurality of second teeth on a radially outer surface, each of the second teeth having a drive engagement profile on a second tooth flank and a cam profile on a first tooth flank, the second tooth flanks of the plurality of second teeth facing in a second, opposite rotational direction from the first tooth flanks of the plurality of first teeth;
- a pawl plate rotationally fixed to the second shaft;
- a plurality of first pawls pivotally connected to the pawl plate, each first pawl having a first end that is configured to engage with a respective one of the drive engagement profiles on the first tooth flanks of the first teeth of the first gear plate in an engaged position and having a second actuation end, opposite the first end, that extends radially outwardly to an activated position and is movable radially inwardly to a deactivated position such that the first end is disengaged from the respective drive engagement profile on the first tooth flanks of the first teeth, and a first spring associated with each of the first pawls that biases the first ends of the first pawls into the engaged positions;
- a plurality of second pawls pivotally connected to the pawl plate, each second pawl having a first end that is configured to engage with a respective one of the drive engagement profiles on the second tooth flanks of the second teeth of the second gear plate in an engaged position and having a second actuation end, opposite the first end, that extends radially outwardly to an activated position and is movable radially inwardly to a deactivated position such that the first end of the second pawl is disengaged from the respective drive engagement profiles on the second tooth flanks of the second teeth, and a second spring associated with each of the second pawls that biases the first ends of the second pawls into the engaged positions;
- a first actuator ring that is axially movable between an actuated position, in which the second ends of the first pawls are in the activated position, and a disengaged position, in which the first actuator ring presses the second ends of the first pawls radially inwardly to the deactivated position such that the first ends of the first pawls are disengaged from the respective drive engagement profiles on the first tooth flanks of the first teeth;
- and
- a second actuator ring that is axially movable between an actuated position, in which the second ends of the second pawls are in the activated position, and a disengaged position, in which the second actuator ring presses the second ends of the second pawls radially inwardly to the deactivated position such that the first ends of the second pawls are disengaged from the respective drive engagement profiles on the second tooth flanks of the second teeth.
6 more elements
A dual direction, selectable one-way clutch, comprising:
- first and second concentric shafts;
- a first gear plate rotationally fixed to the first shaft, the first gear plate including a plurality of first teeth on a radially outer surface, each of the first teeth having a drive engagement profile on a first tooth flank that faces in a first rotational direction and a cam profile on a second tooth flank;
- a second gear plate rotationally fixed to the first shaft, the second gear plate including a plurality of second teeth on a radially outer surface, each of the second teeth having a drive engagement profile on a second tooth flank and a cam profile on a first tooth flank, the second tooth flanks of the plurality of second teeth facing in a second, opposite rotational direction from the first tooth flanks of the plurality of first teeth;
- a pawl plate rotationally fixed to the second shaft;
- a plurality of first pawls pivotally connected to the pawl plate, each first pawl having a first end that is configured to engage with a respective one of the drive engagement profiles on the first tooth flanks of the first teeth of the first gear plate in an engaged position and having a second actuation end, opposite the first end, that extends radially outwardly to an activated position and is movable radially inwardly to a deactivated position such that the first end is disengaged from the respective drive engagement profile on the first tooth flanks of the first teeth, and a first spring associated with each of the first pawls that biases the first ends of the first pawls into the engaged positions;
- a plurality of second pawls pivotally connected to the pawl plate, each second pawl having a first end that is configured to engage with a respective one of the drive engagement profiles on the second tooth flanks of the second teeth of the second gear plate in an engaged position and having a second actuation end, opposite the first end, that extends radially outwardly to an activated position and is movable radially inwardly to a deactivated position such that the first end of the second pawl is disengaged from the respective drive engagement profiles on the second tooth flanks of the second teeth, and a second spring associated with each of the second pawls that biases the first ends of the second pawls into the engaged positions;
- an actuator ring that is axially movable between:
- a first actuated position, in which the second ends of the first pawls and the second ends of the second pawls are in the activated position providing a fully locked connection between the first and second shafts in both rotational directions;
- a first one-way clutch position, in which the second ends of the first pawls are in the activated position and the second ends of the second pawls are in the deactivated position for transferring force only in the first rotational direction;
- a second one-way clutch position, in which the second ends of the first pawls are in the deactivated position and the second ends of the second pawls are in the activated position for transferring force only in the second rotational direction;
- and
- a freewheel position, in which the first and second pawls are in the deactivated position such that the first and second shafts are freely rotatable relative to one another in both rotational directions.
9 more elements
Dependencies are inferred from the claim text.