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US 8,474,585 B2Granted
Clutch device
AssigneeSchaeffler Technologies AG & Co. KG
InventorsMartin Chambrion, Yannick Simon, Christoph Raber
Life of this patent
Estimating the term…
Abstract
The invention relates to a clutch device, for example, a booster clutch device, including a first clutch element and a second clutch element, where a torsion spring device is provided coupling the first clutch element to the second clutch element, the torsion spring device having a multi-stage spring characteristic.
Claims16
A booster clutch device comprising:
- a ramp system including:
- a torque rigidity;
- a first ramp;
- a second ramp rotatable with respect to the first ramp and arranged to receive torque in a first rotational direction;
- and,
- at least one rolling element engaged with the first and second ramps;
- a first clutch engaged with the first ramp;
- a second clutch engaged with the second ramp and including at least one disc and an output including first and second clutch elements;
- and,
- a torque sensor, wherein:
- in response to the torque:
- the first and second ramps non-rotatably engage;
- the first and second clutches close;
- the first clutch element is rotatable with respect to the second clutch element in the first rotational direction to engage the torque sensor;
- and,
- the torque sensor urges the first clutch element in the second rotational direction with respect to the second clutch element;
- and,
- in response to a decrease in the torque, the torque sensor rotates the second ramp with respect to the first ramp.
15 more elements
A booster clutch device comprising:
- a ramp system including:
- a first ramp;
- a second ramp rotatable with respect to the first ramp;
- and,
- at least one rolling element engaged with the first and second ramps;
- a first clutch engaged with the first ramp;
- a second clutch engaged with the second ramp and including a plurality of discs and an output having a flange and a clutch hub;
- and,
- a torque sensor including a compression spring and a leaf spring coupling the flange and the clutch hub, wherein:
- rotational torque transmitted to the second ramp in a first direction is arranged to clamp the plurality of discs with a first force to close the second clutch;
- and,
- when the rotational torque in the first direction increases beyond a first amount, the torque sensor is arranged to increase a second force urging the flange in a second direction, opposite the first direction, to decrease the first force.
9 more elements
A booster clutch device comprising:
- a ramp system including:
- a first ramp;
- a second ramp rotatable with respect to the first ramp;
- and,
- at least one rolling element engaged with the first and second ramps;
- a first clutch engaged with the first ramp;
- a second clutch engaged with the second ramp and including an output having a flange and a clutch hub;
- and,
- a torque sensor including a compression spring and a leaf spring coupling the flange and the clutch hub, wherein:
- the second ramp is arranged to rotate in a first direction with respect to the first ramp to close the second clutch;
- the compression spring urges the flange in a second direction, opposite the first direction, with respect to the clutch hub;
- and,
- for relative rotation, beyond a first amount, of the flange with respect to the hub in the first direction, the leaf spring urges the flange in the second direction.
10 more elements
Dependencies are inferred from the claim text.