Coupling Device For Transmitting Torque From A Gyrating Mass To A Drive Device And Corresponding Method

Patent metadata

Field	Value
Publication number	US-2021123406-A1
Application number	US-201816617418-A
Country	US
Kind code	A1
Filing date	May 8, 2018
Priority date	Jun 2, 2017
Publication date	Apr 29, 2021
Grant date	—

Abstract

A coupling device for transmitting a torque from a flywheel mass to a drive device. A ratchet wheel and a transmission element of the flywheel mass ‘SUE’, which is identical to the flywheel mass (or is connected to the flywheel mass, are axially displaceable relative to one another, and pawls of the ratchet wheel can be moved into cutouts of the SUE, and a friction device, particularly in the form of a friction cone, is connectable to the SUE at least partially in a frictionally engaging manner and is connected to the ratchet wheel in a positively engaging manner.

First claim

1 - 30 . (canceled)

31 . A coupling device configured to transmit a torque from a flywheel mass to a drive device, comprising:
a ratchet wheel having pawls; a flywheel mass ‘SUE’ having cutouts; and a transmission element of the flywheel mass ‘SUE’, which is substantially identical to the flywheel mass or is connected to the flywheel mass; wherein the ratchet wheel and the transmission element of the flywheel mass ‘SUE’ are axially displaceable relative to one another such that the pawls of the ratchet wheel can be moved into cutouts of the SUE; and a friction device, configured as a friction cone, configured to be connected to the SUE at least partially in a frictionally engaging manner and connected to the ratchet wheel in a positively engaging manner.

32 . The coupling device according to claim 31 , further comprising:
an actuating device having a piston and a spring device for the piston and configured to reduce an axial distance between the ratchet wheel and the SUE.

33 . The coupling device according to claim 32 , wherein the piston is actuatable by hydraulic pressure, wherein a piston nozzle is arranged for the piston, and the piston is arranged to contact the friction cone for transmission of force.

34 . The coupling device according to claim 31 , wherein ratchet wheel and/or friction device is configured for actuation by hydraulic pressure.

35 . The coupling device according to claim 31 , further comprising:
spring elements having first areas arranged between the pawls and the cutouts of the SUE, wherein a shape of the spring elements is configured to receive the pawls.

36 . The coupling device according to claim 35 , wherein the spring elements have second areas arranged between friction device and SUE.

37 . The coupling device according to claim 35 , wherein the spring elements are arranged on a SUE side.

38 . The coupling device according to claim 35 , wherein the spring elements extend at least partially under a flat angle relative to at least one of respective lateral surfaces of the pawls and/or respective lateral surfaces of respective cutouts.

39 . The coupling device according to claim 38 ,
wherein the spring elements are formed asymmetrically, wherein the spring elements extend at a flat angle on a side directed away from a rotational direction.

40 . The coupling device according to claim 31 , wherein a surface region of the SUE surrounding a cutout is beveled.

41 . The coupling device according to claim 40 , wherein the surface region surrounding the cutout is rounded at a transition between surface region and the cutout, particularly on a side directed away from a rotational direction.

42 . The coupling device according to claim 31 , wherein the cutouts and the pawls are configured to correspond to one another but so as to be asymmetrical.

43 . The coupling device according to claim 31 , wherein the SUE is supported by at least one sliding bearing.

44 . The coupling device according to claim 43 , wherein the at least one sliding bearing provides a pressure restriction effect and/or the at least one sliding bearing is a combined rolling bearing/rectangular seal.

45 . The coupling device according to claim 31 , wherein respective areas on both sides of the ratchet wheel are configured to be acted upon by different pressure of a hydraulic fluid, wherein the respective areas are constantly acted upon by a minimum pressure of a hydraulic fluid.

46 . A damping device comprising:
a housing; a coupling device configured to transmit a torque from a flywheel mass to a drive device, comprising: a ratchet wheel having pawls; a flywheel mass ‘SUE’ having cutouts; and a transmission element of the flywheel mass ‘SUE’, which is substantially identical to the flywheel mass or is connected to the flywheel mass; wherein the ratchet wheel and the transmission element of the flywheel mass ‘SUE’ are axially displaceable relative to one another such that the pawls of the ratchet wheel can be moved into cutouts of the SUE; and a friction device, configured as a friction cone, configured to be connected to the SUE at least partially in a frictionally engaging manner and connected to the ratchet wheel in a positively engaging manner; a first damping device configured as a torsional damper; a drive transmission element configured as a crankshaft hub; and an output transmission element configured as a hub disk, wherein the SUE is configured as a primary plate of the damping device.

47 . The damping device according to claim 46 , further comprising a spring element arranged between the ratchet wheel of the coupling device and the drive transmission element.

48 . The damping device according to claim 47 , wherein the spring element is configured as a radial shaft spring plate.

49 . The damping device according to claim 46 , wherein the SUE has a rotary seal, configured as a radial shaft sealing ring, for sealing relative to the drive transmission element.

50 . The damping device according to claim 46 , wherein the housing is at least partially formed by a vertical wall of a drive mechanism, wherein the vertical wall has a rotary seal for sealing.

51 . The damping device according to claim 50 , wherein the housing is at least partially formed by a bell housing which is connected to the vertical wall of the drive device, wherein a seal is at least partially arranged between vertical wall of the drive device and bell housing.

Assignees

• Zahnradfabrik Friedrichshafen

Inventors

• Kundermann Wolfgang
• Grosspietsch Wolfgang
• Rohm Axel
• Matschas Steffen

Classifications

• F16D23/04 Primary

  with an additional friction clutch (synchro rings per se F16D23/025) · CPC title

• F02N7/06

  the engines being of reciprocating-piston type (of internal-combustion type F02N7/10) · CPC title

• F02N5/04 Primary

  of inertia type · CPC title

• F02N11/00

  Starting of engines by means of electric motors · CPC title

• F02N15/027

  of the pawl type · CPC title