DIFFERENTIAL TRANSMISSION COMPRISING FRICTIONALLY COUPLED POWER OUTLETS
First Claim
1. A differential transmission comprising:
- an epicyclic housing;
a first sun gear accommodated in the epicyclic housing;
a second sun gear also accommodated in the epicyclic housing and arranged on a same axis in reference to an axis of revolution of the first sun gear;
a planetary assembly that rotates with the epicyclic housing about the axis of revolution that couples the two sun gears to allow rotation in opposite directions in reference to each other about said axis of revolution; and
a coupling device accommodated in a receiving chamber defined between the sun gears to generate a bridge moment coupling the two sun gears in a frictional manner;
the coupling device comprising;
a first coupling ring element supported via a conical area at a first conical inner wall that limits the receiving chamber;
a second coupling ring element supported via a conical area at a second conical inner wall that limits the receiving chamber; and
a spring arrangement that axially stresses the two coupling ring elements such that under an effect of the spring arrangement the first and second coupling ring elements are each urged against the respective first or second conical inner walls.
1 Assignment
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Accused Products
Abstract
A differential transmission having an epicyclic housing, a first sun gear in the epicyclic housing, a second sun gear also in the epicyclic housing and arranged on the same axis of revolution as the first sun gear, a planetary assembly revolves around the axis of revolution together with the epicyclic housing and couples the two sun gears such that they can rotate in opposite directions, and a coupling device in a receiving space defined between the sun gears for generating a bridging torque which couples the two sun gears in a frictional manner. The coupling device has a first coupling ring element supported via a conical surface against a first conical inner wall of the receiving space, and a second coupling ring element supported via a conical surface against a second conical inner wall of the receiving space, and a spring arrangement axially loads the two coupling ring elements such that they are pressed against the respective conical inner wall of the receiving space.
6 Citations
20 Claims
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1. A differential transmission comprising:
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an epicyclic housing; a first sun gear accommodated in the epicyclic housing; a second sun gear also accommodated in the epicyclic housing and arranged on a same axis in reference to an axis of revolution of the first sun gear; a planetary assembly that rotates with the epicyclic housing about the axis of revolution that couples the two sun gears to allow rotation in opposite directions in reference to each other about said axis of revolution; and a coupling device accommodated in a receiving chamber defined between the sun gears to generate a bridge moment coupling the two sun gears in a frictional manner; the coupling device comprising; a first coupling ring element supported via a conical area at a first conical inner wall that limits the receiving chamber; a second coupling ring element supported via a conical area at a second conical inner wall that limits the receiving chamber; and a spring arrangement that axially stresses the two coupling ring elements such that under an effect of the spring arrangement the first and second coupling ring elements are each urged against the respective first or second conical inner walls. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A differential transmission comprising:
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an epicyclic housing; a first sun gear accommodated in the epicyclic housing; a second sun gear also accommodated in the epicyclic housing (H) and arranged on a same axis in reference to an axis of revolution of the first sun gear; a planetary assembly that rotates with the epicyclic housing about the axis of revolution that couples the two sun gears for rotation in opposite directions in reference to each other about said axis of revolution; and a coupling device accommodated in a receiving chamber defined between the sun gears that generates a bridge moment coupling the two sun gears in a frictional manner; the first sun gear and the second sun gear each being embodied as spur gears and arranged in proximity to and axially following each other, and the receiving chamber of the coupling device is formed by plate-shaped recesses formed in the first and the second sun gear, and crown gears of the two sun gears surround the receiving chamber in an axial plane of the coupling device. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A differential transmission comprising:
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an epicyclic housing; a first sun gear located in the epicyclic housing; a second sun gear also located in the epicyclic housing and arranged on a same axis of revolution as the first sun gear; a planetary assembly that rotates with the epicyclic housing about the axis of revolution that couples the first and second sun gears to allow rotation in opposite directions in reference to each other about said axis of revolution; and a coupling device located between the sun gears that frictionally couples the first and second sun gears in a frictional manner, the coupling device comprising; a first coupling ring element supported via a conical area at a first conical inner wall located on the first sun gear; a second coupling ring element supported via a conical area at a second conical inner wall located on the second sun gear; and an elastic element that axially stresses the two coupling ring elements against the respective first or second conical inner walls. - View Dependent Claims (17, 18, 19, 20)
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Specification