Clutch arrangement and drive train for a motor vehicle

Patent metadata

Field	Value
Publication number	US-10850604-B2
Application number	US-201716068917-A
Country	US
Kind code	B2
Filing date	Jan 3, 2017
Priority date	Jan 29, 2016
Publication date	Dec 1, 2020
Grant date	Dec 1, 2020

Abstract

A clutch arrangement for a drive train of a motor vehicle having a hybrid drive includes a first clutch, a second clutch, a central bearing, and a clutch actuator. The first clutch has a first clutch first rotating part and a plurality of connecting segments. The connecting segments are connected to one another for conjoint rotation in a coupled position of the first clutch. The second clutch has a second clutch first rotating part with a shaft region. The second clutch first rotating part is connected for conjoint rotation with the first clutch first rotating part. The central bearing is arranged on the shaft region. The clutch actuator is arranged to interact with the first clutch. The connecting segments are arranged radially to the outside of the clutch actuator. The clutch actuator is arranged radially to the outside of the central bearing. The first clutch, the clutch actuator and the central bearing are arranged at least partially overlapping one another in an axial direction.

First claim

The invention claimed is:

1. A clutch arrangement for a drive train of a motor vehicle having a hybrid drive, comprising:
a first clutch with a first clutch first rotating part and a plurality of connecting segments, the connecting segments being connected to one another for conjoint rotation in a coupled position of the first clutch;
a second clutch with a second clutch first rotating part with a shaft region, the second clutch first rotating part connected for conjoint rotation with the first clutch first rotating part;
a central bearing arranged on the shaft region; and,
a clutch actuator, comprising a non-rotating hydraulic piston and an actuation bearing, arranged to interact with the first clutch, wherein:
the connecting segments are arranged radially to the outside of the clutch actuator;
the clutch actuator is arranged radially to the outside of the central bearing; and,
the first clutch, the non-rotating hydraulic piston or the actuation bearing, and the central bearing are arranged at least partially nested in a radial direction.

2. The clutch arrangement of claim 1 , wherein the first clutch first rotating part comprises a torque transfer region with a belt pulley for interacting with a belt of an electric machine during operation of the drive train.

3. The clutch arrangement of claim 2 , wherein the belt pulley comprises a belt contour arranged radially outside of the connecting segments, the belt contour being arranged to receive the belt in a positive or a frictional engagement.

4. The clutch arrangement of claim 1 , wherein the central bearing forms a common bearing assembly for supporting the first clutch and the second clutch.

5. The clutch arrangement of claim 1 , wherein the hydraulic piston is arranged offset and at least partially nested radially inside of or outside of the actuation bearing.

6. The clutch arrangement of claim 5 , wherein:
the actuation bearing is arranged radially outside of the hydraulic piston;
the first clutch is a normally closed clutch;
the actuation bearing is directly connected to the first clutch; and,
the first clutch is arranged to open from a rest position when the hydraulic piston is actuated.

7. The clutch arrangement of claim 5 , wherein:
the hydraulic piston is arranged radially outside of the actuation bearing;
the first clutch is a normally open clutch;
the actuation bearing is directly connected to the first clutch; and,
the first clutch is arranged to close from a rest position when the hydraulic piston is actuated.

8. The clutch arrangement of claim 1 , wherein the clutch actuator is a hydraulic clutch actuator.

9. A drive train for a motor vehicle having a hybrid drive comprising the clutch arrangement of claim 1 .

10. The drive train of claim 9 , further comprising a hydraulic channel leading radially outward from the clutch actuator for hydraulic actuation of the clutch actuator.

11. The clutch arrangement of claim 1 wherein the first clutch, the actuation bearing, and the central bearing are arranged at least partially nested in a radial direction.

12. A clutch arrangement for a drive train of a motor vehicle having a hybrid drive, comprising:
a first clutch with a first clutch first rotating part and a plurality of connecting segments, the connecting segments being connected to one another for conjoint rotation in a coupled position of the first clutch;
a second clutch with a second clutch first rotating part with a shaft region, the second clutch first rotating part connected for conjoint rotation with the first clutch first rotating part;
a central bearing arranged on the shaft region; and,
a clutch actuator, comprising a hydraulic piston and an actuation bearing, arranged to interact with the first clutch, wherein:
the connecting segments are arranged entirely radially to the outside of the hydraulic piston;
the hydraulic piston is arranged entirely radially to the outside of the central bearing; and,
the first clutch, the hydraulic piston or the actuation bearing, and the central bearing are arranged at least partially nested in a radial direction.

13. A clutch arrangement for a drive train of a motor vehicle having a hybrid drive, comprising:
a first clutch with a first clutch first rotating part and a plurality of connecting segments, the connecting segments being connected to one another for conjoint rotation in a coupled position of the first clutch;
a second clutch with a second clutch first rotating part with a shaft region, the second clutch first rotating part connected for conjoint rotation with the first clutch first rotating part;
a central bearing arranged on the shaft region; and,
a clutch actuator, comprising a sealed hydraulic piston and an actuation bearing, arranged to interact with the first clutch, wherein:
the sealed hydraulic piston is displaceable by a hydraulic fluid to engage or disengage the first clutch;
the connecting segments are arranged radially to the outside of the clutch actuator;
the clutch actuator is arranged radially to the outside of the central bearing; and,
the first clutch, the sealed hydraulic piston or the actuation bearing, and the central bearing are arranged at least partially nested in a radial direction.

Assignees

• Schaeffler Technologies Ag
• Schaffler Tech Ag & Co Kg

Inventors

• Pieper Torsten
• Meinhard Rolf

Classifications

• F16D21/08

  Serially-arranged clutches interconnecting two shafts only when all the clutches are engaged (F16D13/08, F16D13/12 take precedence) · CPC title

• B60Y2200/92

  Hybrid vehicles · CPC title

• F16D25/082 Primary

  the line of action of the fluid-actuated members co-inciding with the axis of rotation · CPC title

• F16D13/76

  specially adapted to incorporate with other transmission parts, i.e. at least one of the clutch parts also having another function, e.g. being the disc of a pulley · CPC title

• F16D21/02

  for interconnecting three or more shafts or other transmission members in different ways (in endless-track vehicles B62D) · CPC title