Clutch disk with torsional angular-dependent friction damping device

Patent metadata

Field	Value
Publication number	US-10428876-B2
Application number	US-201715623555-A
Country	US
Kind code	B2
Filing date	Jun 15, 2017
Priority date	Jun 16, 2016
Publication date	Oct 1, 2019
Grant date	Oct 1, 2019

Abstract

A torsion damper with at least one torque input disk and at least one torque output disk, wherein the torque input disk can move in circumferential direction relative to the torque output disk against the force of at least one spring storage, wherein the relative movement is damped by a friction device which generates a smaller friction torque in a first swivel angle range than in a second swivel angle range in that the friction device has at least two friction ring pairs which are rotatable opposite one another and which are activated depending on the swivel angle via a driving connection of at least one friction ring with the torque input disk. The driving connection has a spring element which is arranged functionally in series with the friction device and functionally in parallel with the spring storage.

First claim

What is claimed is:

1. A torsion damper comprising:
at least one torque input disk ( 5 );
at least one torque output disk ( 25 ; 27 );
the at least one torque input disk ( 5 ) and the at least one torque output disk constructed to perform movement in circumferential direction relative to the at least one torque output disk ( 25 ; 27 ) against the force of at least one spring storage ( 11 );
a driving connection ( 63 - 69 );
a friction device ( 41 ) for damping the relative movement by generating a smaller friction torque in a first swivel angle range ( 71 ) than in a second swivel angle range ( 81 ), the friction device ( 41 ) comprising at least two friction rings ( 43 - 47 ; 59 ; 61 ) which are rotatable in opposite direction relative to one another and which are activated depending on the swivel angle by the driving connection ( 63 - 69 ) of the at least two friction rings with the torque input disk ( 5 );
wherein the driving connection ( 63 - 69 ) comprises a spring element ( 73 ) arranged functionally in series with the friction device ( 41 ) and functionally in parallel with the spring storage ( 11 );
wherein the driving connection ( 63 - 69 ) is formed by a driving pin ( 63 ; 65 ) which extends into a cutout ( 69 ) of one of the at least two friction rings ( 59 ; 61 ), and wherein the spring element ( 73 ) is arranged between the driving pan ( 63 ; 65 ) and the cutout ( 69 ); and
wherein at least one spring element ( 73 ) is arranged on both sides of the driving pin ( 63 ; 65 ) in the swivel angle direction.

2. The torsion damper according to claim 1 , wherein the spring element ( 73 ) is constructed as a leaf spring.

3. The torsion damper according to claim 1 , wherein the spring element ( 73 ) is constructed as a helical compression spring.

4. The torsion damper according to claim 1 , wherein the two spring elements ( 73 ) have a different preloading.

5. The torsion damper according to claim 1 , wherein the spring element ( 73 ) is formed by an elastomeric body.

6. The torsion damper according to claim 1 , wherein the spring element ( 73 ) is clamped in the cutout ( 69 ).

Assignees

• Zahnradfabrik Friedrichshafen

Inventors

• Bühl Dominik

Classifications

• F16D2300/22

  Vibration damping · 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

• F16F15/1215

  Leaf springs, e.g. radially extending · CPC title

• F16F15/129

  characterised by friction-damping means ({F16F15/1202, F16F15/1238} , F16F15/131 take precedence) · CPC title

• F16D3/14 Primary

  combined with a friction coupling for damping vibration or absorbing shock · CPC title