# US 10,479,181 B2 · Connecting clutch for a hybrid drive train having a torque sensor

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- Number: US 10,479,181 B2
- Document ID: US10479181B2
- Status: Granted
- Kind: B2
- Application number: 15/512,738
- Filed: 2015-08-26
- Published: 2017-10-19
- Granted: 2019-11-19
- Earliest claimed: 2014-09-25
- Assignees: Schaeffler Technologies AG & Co. KG
- Applicants: Schaeffler Technologies AG & Co. KG
- Inventors: Marc Finkenzeller; Daniel Helmer; Tim Schmid
- Web page: https://patentgrep.com/patent/US10479181B2

## CPC

- B60K 6/387: Actuated clutches, i.e. clutches engaged or disengaged by electric, hydraulic or mechanical actuating means
- B60K 6/365: with the gears having orbital motion
- B60K 6/48: Parallel type
- F16D 13/52: Clutches with multiple lamellae {; Clutches in which three or more axially moveable members are fixed alternately to the shafts to be coupled and are pressed from one side towards an axially-located member (F16D13/385 takes precedence)}
- F16D 13/58: Details {(tools for assembling or disassembling clutches B25B27/0064)}
- F16D 23/12: Mechanical clutch-actuating mechanisms arranged outside the clutch as such (specific for combined clutches F16D21/00; mechanisms specific for synchronisation F16D23/02)
- B60K 2006/4825: {Electric machine connected or connectable to gearbox input shaft}
- B60Y 2200/92: Hybrid vehicles
- B60Y 2400/414: Ramp or cam mechanisms
- B60Y 2400/424: Friction clutches
- B60Y 2400/73: Planetary gearings
- F16D 2023/123: {Clutch actuation by cams, ramps or ball-screw mechanisms}
- Y02T 10/62: Hybrid vehicles
- Y10S 903/91: Orbital, e.g. planetary gears
- Y10S 903/914: Actuated, e.g. engaged or disengaged by electrical, hydraulic or mechanical means
- B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- F16D: COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- B60Y: INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

## Abstract

A hybrid drive train of a motor vehicle is discloses that has a first connecting component, which can be connected to an output shaft of an internal combustion engine, and a second connecting component, which can be connected to a shaft of a transmission and/or a rotor of an electric drive machine. The connection transmits torque when the clutch is in a closed position and is arranged to interrupt torque flow in an open position. A clutch actuation system switches the clutch between the two positions and has a ramp mechanism operatively connected to the components by a planetary gearing. The first component has two conducting segments connected in a rotationally fixed manner by a torque storage device, designed so the segments are elastically preloaded in a direction of rotation in relation to each other at least in the closed position.

## Claims

### Claim 1

A clutch for a hybrid drive train of a motor vehicle, comprising:
a first connection part that is connectable in a rotationally fixed fashion to an output shaft of an internal combustion engine, and
a second connection part that is connectable in a rotationally fixed fashion to a shaft of at least one of a transmission or a rotor of an electric drive engine,
said first connection part and said second connection part are connected to each other in a closed position of the clutch in a torque transmitting manner, while in an opened position of the clutch the connection parts are arranged interrupting a flow of torque, and a clutch actuating system, comprising:
a ramp mechanism switching the clutch between the opened and the closed position, with the ramp mechanism being effectively connected via planetary gearing to the connection parts,
the first connection part comprises two guiding sections connected in a rotationally fixed fashion via a torque storage device, and
the torque storage device is arranged such that the guiding sections at least in a closed position are spring-elastically pre-stressed in reference to each other in a direction of rotation,
the torque storage device comprises a mechanical spring unit,
the mechanical spring unit comprises several mechanical spring elements which cooperate such that the mechanical spring elements successively elastically engage or disengage over a range of an angle of rotation,
a first one of the spring elements is a pressure spring, and
a second one of the spring elements is a leaf spring or a leaf spring package.

### Claim 2 (depends on 1)

The clutch according to claim 1, wherein a first one of the guiding sections is a connecting flange part for direct connection to the output shaft of the internal combustion engine or connection to a two-weight flywheel.

### Claim 3 (depends on 2)

The clutch according to claim 2, wherein a second one of the guiding sections comprises at least a first friction lining.

### Claim 4 (depends on 3)

The clutch according to claim 3, wherein the second connection part comprises at least a second friction lining.

### Claim 5 (depends on 1)

The clutch according to claim 1, wherein the clutch is a friction clutch.

### Claim 6 (depends on 1)

The clutch according to claim 1, wherein the clutch actuating system is switchable via an eddy-current brake acting upon the planetary gearing.