Clutch disk for a motor vehicle

Patent metadata

Field	Value
Publication number	US-10359081-B2
Application number	US-201715497569-A
Country	US
Kind code	B2
Filing date	Apr 26, 2017
Priority date	May 3, 2016
Publication date	Jul 23, 2019
Grant date	Jul 23, 2019

Abstract

A clutch disk ( 10 ) for a motor vehicle includes at least two axially opposed friction linings ( 18 ), a lining spring ( 16 ) and a drive carrier disk ( 14 ), wherein the lining spring ( 16 ) has at least one fastening portion ( 16 a ), a supporting portion ( 16 b ) and a plurality of spring segments ( 16 c ) arranged adjacent to one another in circumferential direction, and the spring segments ( 16 c ) are arranged radially outside at the supporting portion ( 16 b ) of the lining spring ( 16 ), and the fastening portion ( 16 a ) is arranged radially inside at the supporting portion ( 16 b ).

First claim

What is claimed is:

1. A clutch disk ( 10 ) for a motor vehicle comprising:
at least two axially opposed friction linings ( 18 );
a lining spring ( 16 ); and
a drive carrier disk ( 14 );
wherein the lining spring ( 16 ) has at least one fastening portion ( 16 a ), a supporting portion ( 16 b ) and a plurality of spring segments ( 16 c ) arranged adjacent to one another in circumferential direction, the plurality of spring segments ( 16 c ) are connected by the supporting portion ( 16 b ) and arranged radially outside at the supporting portion ( 16 b ) of the lining spring ( 16 ), the fastening portion ( 16 a ) is arranged radially inside at the supporting portion ( 16 b ); and wherein the lining spring ( 16 ) is a single circumferentially extending unitary member comprising at least one radially extending cutout ( 28 ) that defines the plurality of circumferentially adjacent spring segments ( 16 c ); wherein the cutout ( 28 ) comprises an end toward the supporting portion ( 16 b ), the end of the cutout ( 28 ) on the supporting portion side is asymmetrically drop-shaped.

2. The clutch disk ( 10 ) according to claim 1 , wherein the lining spring ( 16 ) comprises three spring segments ( 16 c ).

3. The clutch disk ( 10 ) according to claim 2 , wherein the three spring segments ( 16 c ) have a spring force and wherein the spring force of a spring segment ( 16 c ) located in the center in circumferential direction is greater than the spring force of a spring segment ( 16 c ) located on the outside in circumferential direction.

4. The clutch disk ( 10 ) according to claim 3 , wherein initially a spring segment ( 16 c ) located on the outside in circumferential direction acts on the friction linings, subsequently another spring segment ( 16 c ) located on the outside in circumferential direction acts on the friction linings and, thereafter, a spring segment ( 16 c ) located in the center in circumferential direction acts on the friction linings.

5. The clutch disk ( 10 ) according to claim 2 , wherein each of the spring segments ( 16 c ) has at least a first and a second working surface ( 30 a , 30 b , 32 a , 32 b , 32 c , 34 a , 34 b , 34 c , 34 d ) for contacting the axially opposed friction linings ( 18 ), the first and second working surfaces ( 30 a , 30 b , 32 a , 32 b , 32 c , 34 a , 34 b , 34 c , 34 d ) forming an axial working distance ( 42 ) relative to one another, and wherein an axial working distance ( 42 ) of a spring segment ( 32 ) located on the inside in circumferential direction is less than the axial working distance of a spring segment ( 30 , 34 ) located on the outside in circumferential direction.

6. The clutch disk ( 10 ) according to claim 2 , additionally comprising fastening openings ( 44 ) for fastening the friction linings ( 18 ), the fastening openings ( 44 ) being formed only at one individual spring segment ( 16 c ) of the lining spring ( 16 ).

7. The clutch disk ( 10 ) according to claim 2 , wherein one of the spring segments comprises a first and a second working surface and wherein a first fastening opening ( 44 a ) is formed at the first working surface ( 30 a ) and a second fastening opening ( 44 b ) is formed at the second working surface ( 30 b ).

8. The clutch disk ( 10 ) according to claim 2 , wherein one of the spring segments comprises a bending line ( 40 ) extending in a radial direction.

9. The clutch disk ( 10 ) according to claim 2 , wherein the radially extending cutout ( 28 ) is formed between two spring segments ( 16 c ) of the lining spring ( 16 ) which are arranged adjacent to one another in circumferential direction.

10. The clutch disk ( 10 ) according to claim 9 , wherein the drop shape is flat at a circumferential side and is bulge-shaped at an opposite circumferential side.

Assignees

• Zahnradfabrik Friedrichshafen

Inventors

• Büdicker Kai
• Förster Bernd
• Bühl Dominik

Classifications

• F16D2013/642

  with resilient attachment of frictions rings or linings to their supporting discs or plates for allowing limited axial displacement of these rings or linings · CPC title

• F16D2300/22

  Vibration damping · CPC title

• F16D13/64 Primary

  Clutch-plates; Clutch-lamellae (brake-plates, brake-lamellae F16D65/12) · CPC title

• F16D13/68

  Attachments of plates or lamellae to their supports {(one or more discs connected to the linings transmitting torque to one or more discs connected to the hub by helical springs in windows in the discs, i.e. rotary vibration dampers F16F15/12)} · CPC title

• F16D13/583

  Diaphragm-springs, e.g. Belleville (co-operation with a disengaging thrust ring or bearing F16D23/14) · CPC title