Slip clutch comprising an axis of rotation

Patent metadata

Field	Value
Publication number	US-11268578-B2
Application number	US-201816644519-A
Country	US
Kind code	B2
Filing date	Aug 7, 2018
Priority date	Sep 6, 2017
Publication date	Mar 8, 2022
Grant date	Mar 8, 2022

Abstract

A slip clutch includes an axis of rotation, an input side, an output side, and a pressable friction package for transmitting a predetermined maximum torque between the input side and the output side. The pressable friction package includes a lubricated friction lining with a predetermined coefficient of friction, and an overload spring for applying an axial clamping force to the pressable friction package.

First claim

The invention claimed is:

1. A slip clutch, comprising:
an axis of rotation;
an input side;
an output side;
a pressable friction package for transmitting a predetermined maximum torque between the input side and the output side, the pressable friction package comprising:
a lubricated friction lining comprising a predetermined coefficient of friction; and
an overload spring for applying an axial clamping force to the pressable friction package, wherein:
the pressable friction package is housed in a wet chamber fillable with a lubricant and
the wet chamber comprises:
a counter plate of the pressable friction package; or
a counter bearing for the overload spring.

2. The slip clutch of claim 1 wherein the predetermined maximum torque is determined at least partially by the predetermined coefficient of friction and the axial clamping force.

3. The slip clutch of claim 1 , further comprising a damper unit inserted in a torque path between the input side and the output side.

4. The slip clutch of claim 3 wherein the damper unit is a plate damper comprising a spring damper arranged in a carrier disk.

5. The slip clutch of claim 1 wherein:
the slip clutch further comprises a connecting element for connecting the pressable friction package to the input side or the output side in a torque-transmitting manner
the wet chamber is closed radially outside;
the wet chamber comprises a through opening; and
the connecting element is disposed in the through opening.

6. The slip clutch of claim 1 wherein the overload spring is a diaphragm spring.

7. The slip clutch of claim 1 wherein:
the wet chamber is connected to the input side or the output side by a driver disk; or
the wet chamber is connected to the input side or the output side by a flexplate; or
the wet chamber is connected to the input side or the output side by a flywheel.

8. A drivetrain comprising:
a drive unit with an output shaft; and
an ancillary unit with an auxiliary shaft connected to the output shaft in a torque-transmitting manner by the slip clutch of claim 1 , wherein the slip clutch protects the output shaft and the auxiliary shaft against an overload torque greater than the predetermined maximum torque.

9. A motor vehicle comprising having a driving wheel drivable by the drivetrain of claim 8 .

10. A traction pulley for a traction drive, comprising:
a slip clutch, comprising:
an axis of rotation;
an input side;
an output side;
a pressable friction package for transmitting a predetermined maximum torque between the input side and the output side, the pressable friction package comprising:
a lubricated friction lining comprising a predetermined coefficient of friction; and
an overload spring for applying an axial clamping force to the pressable friction package;

a traction means carrier;
a shaft connection connected to the traction means carrier in a torque-transmitting manner by the slip clutch; and
a damper unit arranged between the traction means carrier and the shaft connection, wherein the slip clutch protects the traction means carrier and the shaft connection against an overload torque greater than the predetermined maximum torque.

11. A drivetrain comprising:
an internal combustion engine comprising an output shaft with an output shaft traction pulley;
a regenerative motor comprising an auxiliary shaft with an auxiliary shaft traction pulley; and
a traction drive connecting the output shaft traction pulley to the auxiliary shaft traction pulley in a torque-transmitting manner, wherein the output shaft traction pulley or the auxiliary shaft traction pulley comprises the traction pulley of claim 10 .

12. A motor vehicle comprising a driving wheel drivable by the drivetrain of claim 11 .

Assignees

• Schaeffler Technologies Ag

Inventors

• Theriot Laurent
• Mende Hartmut

Classifications

• F16F15/1297

  Overload protection, i.e. means for limiting torque · CPC title

• B60Y2400/4244

  of wet type, e.g. using multiple lamellae · CPC title

• F16D7/025 Primary

  with flat clutching surfaces, e.g. discs · CPC title

• F16D13/583

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

• B60K6/26

  characterised by the motors or the generators · CPC title