# US 2021/0242750 A1 · Hybrid module

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- Number: US 2021/0242750 A1
- Document ID: US20210242750A1
- Status: Published application
- Kind: A1
- Application number: 17/110,352
- Filed: 2020-12-03
- Published: 2021-08-05
- Earliest claimed: 2020-02-05
- Assignees: Schaeffler Technologies AG & Co. KG
- Applicants: Schaeffler Technologies AG & Co. KG
- Inventors: Ayyalraju Satyaseelan
- Web page: https://patentgrep.com/patent/US20210242750A1

## CPC

- H02K 1/28: Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
- H02K 7/12: with auxiliary limited movement of stators, rotors or core parts, e.g. rotors axially movable for the purpose of clutching or braking
- B60K 6/24: characterised by the combustion engines
- B60K 6/26: characterised by the motors or the generators
- B60K 6/365: with the gears having orbital motion
- B60K 6/38: characterised by the driveline clutches (shift clutches within the gearing or transmission B60K6/36)
- B60K 6/40: characterised by the assembly or relative disposition of components
- B60K 6/48: Parallel type
- B60K 6/485: Motor-assist type
- F16D 1/112: the interengaging parts comprising torque-transmitting surfaces, e.g. bayonet joints
- F16D 7/021: {with radially applied torque-limiting friction surfaces (F16D7/022 takes precedence)}
- H02K 5/203: {specially adapted for liquids, e.g. cooling jackets}
- H02K 7/003: {Couplings; Details of shafts (means for mounting rotors on shafts H02K1/28)}
- H02K 7/006: {Structural association of a motor or generator with the drive train of a motor vehicle}
- H02K 7/04: Balancing means
- H02K 7/075: using crankshafts or eccentrics
- H02K 7/10: Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K 7/116: with gears
- H02K 7/14: Structural association with mechanical loads, e.g. with hand-held machine tools or fans (with fan or impeller for cooling the machine H02K9/06)
- H02K 9/19: for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
- B60Y 2200/92: Hybrid vehicles
- B60Y 2400/60: Electric Machines, e.g. motors or generators
- F16D 1/068: involving gluing, welding or the like
- F16D 1/076: by clamping together two faces perpendicular to the axis of rotation, e.g. with bolted flanges
- F16D 1/0876: {with axial keys and no other radial clamping}
- F16F 15/145: {Masses mounted with play with respect to driving means thus enabling free movement over a limited range}
- F16F 2222/08: Inertia
- F16F 2232/02: Rotary
- F16H 45/02: with mechanical clutches for bridging a fluid gearing of the hydrokinetic type (control of torque converter lock-up clutches F16H61/14)
- F16H 57/02: Gearboxes; Mounting gearing therein
- F16H 2045/021: {three chamber system, i.e. comprising a separated, closed chamber specially adapted for actuating a lock-up clutch}
- F16H 2045/0221: {with damping means}
- F16H 2045/0263: {the damper comprising a pendulum}
- F16H 2045/0284: {Multiple disk type lock-up clutch}
- F16H 2057/02034: {Gearboxes combined or connected with electric machines}
- F16H 2057/02043: {for vehicle transmissions}
- Y02T 10/62: Hybrid vehicles
- H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53})
- 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
- F16F: SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16H: GEARING
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

A rotor assembly for a hybrid module includes a rotor carrier, a rotor segment, an end ring, a first spacer, a second spacer, and a compressed spring. The rotor carrier includes a first outer cylindrical surface and a radial surface, and the rotor segment is installed on the first outer cylindrical surface. The end ring is fixed to the rotor carrier and arranged for fixing to an engine flexplate. The first spacer is disposed axially between the rotor segment and the radial surface, and the second spacer is disposed axially between the rotor segment and the end ring. The compressed spring is disposed axially between the end ring and the second spacer to press the first spacer, the second spacer, and the rotor segment against the radial surface for frictional torque transmission between the rotor segment and the rotor carrier.

## Claims

### Claim 1

A rotor assembly for a hybrid module, comprising:
a rotor carrier comprising a first outer cylindrical surface and a radial surface;
a rotor segment installed on the first outer cylindrical surface;
an end ring, fixed to the rotor carrier and arranged for fixing to an engine flexplate;
a first spacer disposed axially between the rotor segment and the radial surface;
a second spacer disposed axially between the rotor segment and the end ring; and
a compressed spring disposed axially between the end ring and the second spacer to press the first spacer, the second spacer, and the rotor segment against the radial surface for frictional torque transmission between the rotor segment and the rotor carrier.

### Claim 2 (depends on 1)

The rotor assembly of claim 1 wherein the compressed spring is a Belleville spring or a diaphragm spring.

### Claim 3 (depends on 1)

The rotor assembly of claim 1 wherein each of the first spacer and the second spacer comprises a non-magnetic material.

### Claim 4 (depends on 1)

The rotor assembly of claim 1 wherein the end ring comprises:
a plurality of threaded holes for receiving bolts for fixing the engine flexplate to the end ring; or
a plurality of studs fixed to the end ring for receiving nuts for fixing the engine flexplate to the end ring.

### Claim 5 (depends on 4)

The rotor assembly of claim 4 wherein the plurality of threaded holes or the plurality of studs is disposed radially outside of the first outer cylindrical surface.

### Claim 6 (depends on 1)

The rotor assembly of claim 1 wherein:
a one of the rotor segment or the rotor carrier comprises a key;
the other of the rotor segment or the rotor carrier comprises a keyway; and
the key is disposed in the keyway to rotationally position the rotor segment relative to the rotor carrier.

### Claim 7 (depends on 1)

The rotor assembly of claim 1 further comprising a pilot fixed to the rotor carrier for positioning the rotor assembly in an engine crankshaft bore.

### Claim 8 (depends on 1)

The rotor assembly of claim 1 further comprising a balance weight fixed to a second outer cylindrical surface of the rotor carrier.

### Claim 9 (depends on 1)

The rotor assembly of claim 1 further comprising a torque converter impeller fixed to the rotor carrier.

### Claim 10 (depends on 1)

A hybrid module comprising:
the rotor assembly of claim 1; and
a stator assembly disposed radially outside of the rotor assembly and fixed to a transmission case for a multi-speed planetary transmission.