Dual clutch

Patent metadata

Field	Value
Publication number	US-10138951-B2
Application number	US-201213626325-A
Country	US
Kind code	B2
Filing date	Sep 25, 2012
Priority date	Mar 25, 2010
Publication date	Nov 27, 2018
Grant date	Nov 27, 2018

Abstract

A dual clutch having a first clutch which has a first pressure plate that is movable axially relative to a first counterplate for coupling a first clutch disk that is connected to a first output shaft, a second clutch, which has a second pressure plate that is axially movable relative to a second counterplate for coupling a second clutch disk that is connected to a second output shaft, a torsional vibration damper situated in the direction of flux force between the input shaft and the first counterplate wherein the torsional vibration damper includes a dual mass flywheel with a bow spring running in the circumferential direction to transmit torque, where the flux of force is introducible radially on the outside from the input shaft to the first counterplate into the dual mass flywheel, and is dispersible radially on the inside to the bow spring.

First claim

What is claimed is:

1. A dual clutch for coupling an input shaft on an engine side with a first output shaft on a transmission side and/or a second output shaft on the transmission side, comprising:
a first clutch, which has a first pressure plate that is axially movable relative to a first counterplate for coupling a first clutch disk that is connected to the first output shaft, the first counterplate including a first radially outward facing surface connected to a clutch cover, the clutch cover being a separate member from the first counterplate;
a second clutch, which has a second pressure plate that is axially movable relative to a second counterplate for coupling a second clutch disk that is connected to the second output shaft, the second counterplate including a second radially outward facing surface connected to the clutch cover; and,
a dual mass flywheel situated in a direction of flux of force between the input shaft and the first counterplate, the dual mass flywheel having:
an input flange non-rotatably connected to the input shaft, the input flange having an extension;
an output flange non-rotatably connected to the first counterplate; and,
a bow spring engaged with the input flange and the output flange and running in the circumferential direction to transmit torque, the bow spring arranged radially outward of the extension of the input flange;

a radial gap arranged:
radially outward of the first output shaft; and,
radially inward of the extension of the input flange, the output flange, and the first counterplate, wherein:

the input flange is arranged to receive the flux of force at a point at which the input flange is bolted to a flexible disk non-rotatably connected to the input shaft, the point on the input flange being radially outward from the bow spring; and,
the flux of force is introducible from the input shaft into the dual mass flywheel via the point at which the input flange is bolted to the flexible disk which is radially outside of the bow spring, the flux of force is dispersible from the dual mass flywheel to the first counterplate radially inside of the bow spring, and the flux of force is dispersible from the first counterplate to the clutch cover, and from the clutch cover to the second counterplate.

2. The dual clutch recited in claim 1 , wherein the first counterplate is supported on the input flange.

3. The dual clutch recited in claim 1 , wherein an actuating mechanism is provided for moving the first pressure plate and/or the second pressure plate axially, the first pressure plate and/or the second pressure plate being coupled to the actuating mechanism essentially without a gear ratio change.

4. The dual clutch recited in claim 3 , wherein the first pressure plate is connected to the actuating mechanism by means of a first actuating pot, and/or the second pressure plate is connected to the actuating mechanism by means of a second actuating pot, the first actuating pot and the second actuating pot being movable only axially.

5. The dual clutch recited in claim 3 , wherein the actuating mechanism has a first annular pressure cylinder to move the first pressure plate and a second annular pressure cylinder to move the second pressure plate, the first pressure cylinder and the second pressure cylinder being situated coaxially with respect to each other.

6. The dual clutch recited in claim 3 , wherein the first pressure plate is connected to the actuating mechanism by a single rigid plate, and/or the second pressure plate is connected to the actuating mechanism by a single rigid plate.

7. The dual clutch recited in claim 1 , wherein the dual mass flywheel is connected directly to the first counterplate.

8. The dual clutch recited in claim 1 , wherein the dual mass flywheel is connected to the input shaft by means of the flexible disk opposing the input shaft radially.

9. The dual clutch recited in claim 1 , wherein the first counterplate has a first clutch surface facing the first clutch disk, the dual mass flywheel being spaced apart from the first clutch surface axially in the direction of the engine.

10. A gear train for a motor vehicle having an input shaft on an engine side, a first output shaft on an transmission side, a second output shaft on the transmission side and a dual clutch on the transmission side, comprising:
a first clutch, which has a first pressure plate that is axially movable relative to a first counterplate for coupling a first clutch disk that is connected to the first output shaft, the first counterplate including a first radially outward facing surface connected to a clutch cover, the clutch cover being a separate member from the first counterplate;
a second clutch, which has a second pressure plate that is axially movable relative to a second counterplate for coupling a second clutch disk that is connected to the second output shaft, the second counterplate including a second radially outward facing surface connected to the clutch cover;
a dual mass flywheel situated in the direction of flux of force between the input shaft and the first counterplate, dual mass flywheel includes:
an input flange non-rotatably connected to the input shaft, the input flange having an extension;
an output flange non-rotatably connected to the first counterplate; and,
a bow spring engaged with the input flange and the output flange and running in the circumferential direction to transmit torque, the bow spring arranged radially outward of the extension of the input flange; and,

a radial gap arranged:
radially outward of the first output shaft; and,
radially inward of the extension of the input flange, the output flange, and the first counterplate, wherein:
the first and second clutches are separated from the bow spring in a first direction parallel to an axis of direction for the first and second clutch;
the input flange is arranged to receive the flux of force at a point on the input flange located further in a second direction, opposite the first direction, than the bow spring;
the point on the input flange is a point at which the input flange is bolted to a flexible disk that is non-rotatably connected to the input shaft;
the flux of force is introducible into the dual mass flywheel at the point at which the input flange is bolted to the flexible disk which is radially outside of the bow spring, the flux of force is dispersible from the dual mass flywheel to the first counterplate radially inside of the bow spring, and the flux of force is dispersible from the first counterplate to the clutch cover, and from the clutch cover to the second counterplate; and,
said dual clutch is operatively arranged to couple the input shaft to the first output shaft and/or the second output shaft.

11. The dual clutch recited in claim 1 , wherein the first counterplate is braced and supported on the extension by means of a fixed bearing.

12. A dual clutch for coupling an input shaft on an engine side with a first output shaft on a transmission side and/or a second output shaft on the transmission side, comprising:
a first clutch, which has a first pressure plate that is axially movable relative to a first counterplate for coupling a first clutch disk that is connected to the first output shaft, the first counterplate including a first radially outward facing surface connected to a clutch cover, the clutch cover being a separate member from the first counterplate;
a second clutch, which has a second pressure plate that is axially movable relative to a second counterplate for coupling a second clutch disk that is connected to the second output shaft, the second counterplate including a second radially outward facing surface connected

Assignees

• Schaeffler Technologies Ag

Inventors

• Krebs Florian
• Werner Olaf
• Fischer Nils
• Daikeler René
• Schwederle Philippe
• Janz Thomas

Classifications

• F16D13/646

  Mounting of the discs on the hub · CPC title

• F16D3/66

  the elements being metallic, e.g. in the form of coils · CPC title

• F16D2021/0607

  Double clutch with torque input plate in-between the two clutches, i.e. having a central input plate · CPC title

• F16D2021/0669

  Hydraulically actuated clutches with two clutch plates · CPC title

• F16D2300/22

  Vibration damping · CPC title