Clutch

Patent metadata

Field	Value
Publication number	US-10047802-B2
Application number	US-201415038302-A
Country	US
Kind code	B2
Filing date	Nov 21, 2014
Priority date	Nov 25, 2013
Publication date	Aug 14, 2018
Grant date	Aug 14, 2018

Abstract

Clutch for a motor vehicle, preferably for engaging and disengaging a drivetrain for all-wheel drive vehicles, comprising a first shaft, a second shaft coaxially arranged with the first shaft, a clutch sleeve, which is displaceable in an axial direction relative to the first shaft and the second shaft and which brings about a positive coupling or decoupling of the first shaft and the second shaft, together with a coil to which current can be applied, wherein the clutch sleeve is arranged, torsionally fixed to the first shaft, and wherein the coil to which current can be applied is arranged coaxially with the axial direction, wherein the clutch sleeve to which current can be applied can be displaced in an axial direction through the application of current to the coil.

First claim

The invention claimed is:

1. A clutch for a motor vehicle, for engaging and disengaging a drivetrain for all-wheel drive vehicles, comprising a first shaft, a second shaft coaxially arranged with the first shaft, a clutch sleeve, which is displaceable in an axial direction relative to the first shaft and the second shaft and which brings about a positive coupling or decoupling of the first shaft and the second shaft, and a coil to which current can be applied, wherein the clutch sleeve is arranged, torsionally fixed to the first shaft, wherein the coil to which current can be applied is arranged coaxially with the axial direction, wherein the clutch sleeve can be displaced in an axial direction through the application of current to the coil, wherein the clutch sleeve can be brought back into a coupled or decoupled basic position (G 1 ) by a spring acting coaxially with the axial direction, wherein the clutch sleeve comprises a gate track on at least some portions of the outer circumference, and wherein a nut angular segment, which can be actuated by the coil to which current can be applied, is capable of engaging in the gate track of the clutch sleeve.

2. The clutch as claimed in claim 1 , wherein the nut angular segment is permanently connected to a lever.

3. The clutch as claimed in claim 2 , wherein the nut angular segment can be brought into engagement with the gate track of the clutch sleeve by the lever.

4. The clutch as claimed in claim 3 , wherein the lever is integrally formed with a coil holder.

5. The clutch as claimed in claim 4 , wherein the lever is arranged so that it can pivot or roll on the coil holder, wherein a spring holds the lever with the nut angular segment in a basic position (G 2 ) or brings it back into this position when the coil is not being actuated.

6. The clutch as claimed in claim 4 , wherein the coil to which current can be applied is arranged in the coil holder.

7. The clutch as claimed in claim 4 , wherein the coil holder is supported, torsionally fixed to a housing accommodating the clutch.

8. The clutch as claimed in claim 4 , wherein the nut angular segment can be pressed into the gate track of the clutch sleeve directly by the magnetic force generated by the coil to which current can be applied.

9. The clutch as claimed in claim 4 , wherein two different magnetic fluxes (M 1 , M 2 ) are achievable, depending on the position of the clutch sleeve relative to the coil holder.

10. The clutch as claimed in claim 1 , wherein an armature disk is arranged at one end of the first shaft, wherein the armature disk in an end position (E 1 ) of the clutch sleeve is capable of lifting the nut angular segment out of the gate track.

11. The clutch as claimed in claim 1 , wherein the clutch sleeve, the first shaft and/or the second shaft, at least in portions, have a splined shaft system, splined tooth system, square-tooth system or serrated tooth system.

Assignees

• Magna powertrain gmbh & co kg

Inventors

• Quehenberger Johannes
• Willberger Johann

Classifications

• F16D2500/1022

  Electromagnet · CPC title

• F16D2500/1066

  Hybrid · CPC title

• F16D2500/70418

  Current · CPC title

• F16D11/16 Primary

  with clutching members movable otherwise than only axially (F16D11/02, F16D11/08 take precedence) · CPC title

• F16D2500/7041

  Position · CPC title