Dual clutch

Patent metadata

Field	Value
Publication number	US-10240645-B2
Application number	US-201515504391-A
Country	US
Kind code	B2
Filing date	Aug 11, 2015
Priority date	Aug 29, 2014
Publication date	Mar 26, 2019
Grant date	Mar 26, 2019

Abstract

A dual clutch device having an input side, a first output side, and a second output side, which are arranged rotatably about an axis of rotation, and having a first, radially outer friction clutch for producing frictional engagement between the input side and the first output side and a second, radially inner friction clutch for producing frictional engagement between the input side and the second output side. Each friction clutch has a first friction element, which engages in the input side in a torque-transmitting manner, a second friction element, which engages in the associated output side in a torque-transmitting manner, a control element for providing an axially pressing force on the friction elements, and a leaf spring element, which is spirally wound around the axis of rotation and which is arranged axially between the control element and the friction elements.

First claim

The invention claimed is:

1. A dual clutch device comprising:
an input side, a first output side, and a second output side each arranged rotational about an axis of rotation;
a first, radially outer friction clutch for generating a friction-fitting engagement between the input side and the first output side, the first friction clutch including:
a first friction element engaged with the input side in a torque-proof fashion;
a second friction element engaged with the first output side in a torque-proof fashion;
a first control element for providing an axial compression upon the first friction element and the second friction element; and
a first leaf spring element;
a second, radially inner friction clutch for generating a friction-fitting engagement between the input side and the second output side, the second friction clutch including:
a third friction element engaged with the input side in a torque-proof fashion;
a fourth friction element engaged with the second output side in a torque-proof fashion;
a second control element for providing an axial compression upon the third friction element and the fourth friction element; and
a second leaf spring element;
at least one of the first leaf spring element or the second leaf spring element is wound spirally about the axis of rotation by less than 360°; and
wherein:
the first leaf spring element is arranged axially between (i) the first control element and (ii) the first friction element or the second friction element; or
the second leaf spring element is arranged axially between (i) the second control element and (ii) the third friction element or the fourth friction element.

2. The dual clutch device according to claim 1 , further comprising an axial actuating element, and
at least one of:
the axial actuating element acts upon the first leaf spring element, the first leaf spring element spreading the first friction element and the second friction element apart from the actuating element when an axial actuating force from the axial actuating element is missing so that the first friction clutch opens, or
the axial actuating element acts upon the second leaf spring element, the second leaf spring element spreading the third friction element and the fourth friction element apart when the axial actuating force from the axial actuating element is missing so that the second friction clutch opens.

3. The dual clutch device according to claim 1 , wherein an axially extending section of the input side is implemented to engage radially at an outside and in a form-fitting fashion the first friction element of the first friction clutch and radially at an inside and in a form-fitting fashion the third friction element of the second friction clutch.

4. The dual clutch device according to claim 3 , wherein the axially extending section is produced in one piece from sheet metal.

5. The dual clutch device according to claim 1 , wherein respectively several of the friction elements are provided.

6. The dual clutch device according to claim 1 , wherein the dual clutch device is embodied to run in an oil bath.

7. A dual clutch device comprising:
an input side, a first output side, and a second output side each arranged rotational about an axis of rotation;
a first, radially outer friction clutch for generating a friction-fitting engagement between the input side and the first output side, the first friction clutch including:
a first friction element engaged with the input side in a torque-proof fashion;
a second friction element engaged with the first output side in a torque-proof fashion;
a first control element for providing an axial compression upon the first friction element and the second friction element; and
a first leaf spring element arranged axially between (i) the first control element and (ii) the first friction element or the second friction element;
a second, radially inner friction clutch for generating a friction-fitting engagement between the input side and the second output side, the second friction clutch including:
a third friction element engaged with the input side in a torque-proof fashion;
a fourth friction element engaged with the second output side in a torque-proof fashion;
a second control element for providing an axial compression upon the third friction element and the fourth friction element; and
a second leaf spring element; and
an axial actuating element; and
at least one of:
the axial actuating element acts upon the first leaf spring element, the first leaf spring element compressing the first friction element and the second friction element when an axial actuating force from the axial actuating element is missing so that the first friction clutch closes, or
the axial actuating element acts upon the second leaf spring element, the second leaf spring element compressing the third friction element and the fourth friction element when the axial actuating force from the axial actuating element is missing so that the second friction clutch closes.

Assignees

• Schaeffler Technologies Ag

Inventors

• Chambrion Martin
• Ruf Johannes

Classifications

• F16D13/58

  Details {(tools for assembling or disassembling clutches B25B27/0064)} · CPC title

• F16D21/06

  at least two driving shafts or two driven shafts being concentric · CPC title

• F16D13/56 Primary

  in which the clutching pressure is produced by springs only · CPC title

• F16D13/54

  with means for increasing the effective force between the actuating sleeve or equivalent member and the pressure member · CPC title

• F16D2021/0676

  Mechanically actuated multiple lamellae clutches · CPC title