Form-fit coupling actuating device of a motor vehicle transmission

Patent metadata

Field	Value
Publication number	US-9322439-B2
Application number	US-201214131961-A
Country	US
Kind code	B2
Filing date	Jul 13, 2012
Priority date	Jul 13, 2011
Publication date	Apr 26, 2016
Grant date	Apr 26, 2016

Abstract

A positive clutch actuating device of a motor vehicle transmission for shifting a positive clutch that is situated in series with a friction clutch includes at least one actuating unit having at least one gate track, which is provided for mechanically converting a rotary movement into a linear movement in order to actuate the positive clutch.

First claim

What is claimed is:

1. A positive clutch actuating device of a motor vehicle transmission for shifting a positive clutch that is situated in series with a friction clutch, the device comprising:
an actuating unit, which includes
at least one gate track configured to mechanically convert a rotary movement into a linear movement in order to actuate the positive clutch; and
an internal gear, wherein the gate track is a web, slot, or groove defined by an inner periphery of the internal gear.

2. The positive clutch actuating device according to claim 1 , wherein the positive clutch is situated upstream from the friction clutch with respect to a drive force flow.

3. The positive clutch actuating device according to claim 2 , wherein the positive clutch is configured to disconnect the friction clutch from the drive force flow.

4. The positive clutch actuating device according to claim 1 , further comprising:
a synchronizing unit configured to synchronize the positive clutch.

5. The positive clutch actuating device according to claim 2 , further comprising:
an actuator unit configured to act with the rotary movement on the internal gear in order to actuate the positive clutch.

6. The positive clutch actuating device according to claim 5 , wherein the actuator unit is in drive connection with the actuating unit, and at a same time is in drive connection with a further actuating unit that is configured to actuate a further positive clutch.

7. The positive clutch actuating device according to claim 1 , wherein the positive clutch is a dog clutch.

8. The positive clutch actuating device according to claim 1 , wherein the friction clutch has an inner plate carrier and the positive clutch has a first positive-fit element, the first positive-fit element being connected to the inner plate carrier in a rotationally and displaceably fixed manner.

9. The positive clutch actuating device according to claim 1 , wherein the actuating unit further includes a shifting element coupled between the at least one gate track and the friction clutch, wherein the shifting element is coupled to the at least one gate track so that rotation of the internal gear laterally shifts the shifting element.

10. The positive clutch actuating device according to claim 9 , wherein the shifting element includes a pin-shaped area engaged in the at least one gate track.

11. The positive clutch actuating device according to claim 1 , wherein the at least one gate track includes a first, second, and third area, each having a linear progression, wherein the first and third areas are offset relative to one another and are in parallel with each other, and wherein the second area connects the first and third areas and extends obliquely between the linear progression of the first and third areas.

12. The positive clutch actuating device according to claim 5 , wherein the actuator unit is disposed partially outside of a transmission housing.

Assignees

• Appeltauer Peter
• Spengler Gerhard
• Daimler Ag

Inventors

• Appeltauer Peter
• Spengler Gerhard

Classifications

• F16D47/02

  of which at least one is a coupling · CPC title

• F16D23/04

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

• F16D2023/123

  Clutch actuation by cams, ramps or ball-screw mechanisms · CPC title

• F16D21/08 Primary

  Serially-arranged clutches interconnecting two shafts only when all the clutches are engaged (F16D13/08, F16D13/12 take precedence) · CPC title

• F16D28/00

  Electrically-actuated clutches (arrangements for synchronisation F16D23/02; clutches actuated directly by means of an electromagnet F16D27/00; automatic clutches F16D43/00 - F16D45/00; external control F16D48/00) · CPC title