Positive-locking shifting device of a transmission

Patent metadata

Field	Value
Publication number	US-9797481-B2
Application number	US-201615149674-A
Country	US
Kind code	B2
Filing date	May 9, 2016
Priority date	May 19, 2015
Publication date	Oct 24, 2017
Grant date	Oct 24, 2017

Abstract

A positive-locking shifting device of a transmission connects one element of a first planetary gear set to one element of a second planetary gear set in a first shifting position and connects an additional element of the second planetary gear set to a torque-proof element of the transmission in a second shifting position. A single element of the shifting device is axially displacable between the first and second shifting positions. A shiftable operative connection between the torque-proof element of the transmission and the additional element of the second planetary gear set disposed, at least in sections, axially between the first and second planetary gear sets. The shiftable operative connection between the torque-proof element of the transmission and the additional element of the second planetary gear set intersecting a shiftable operative connection between the one element of the first planetary gear set and the one element of the second planetary gear set.

First claim

The invention claimed is:

1. A positive-locking shifting device of a transmission, the transmission including at least a first planetary gear set and a second planetary gear set, the positive-locking shifting device comprising:
a single element that is axially displacable between a first shifting position and a second shifting position,
wherein the positive-locking shifting device is configured such that the positive-locking shifting device connects one element of the first planetary gear set to one element of the second planetary gear set in the first shifting position of the single element and connects an additional element of the second planetary gear set to a torque-proof element of the transmission in the second shifting position of the single element,
wherein a shiftable operative connection between the torque-proof element and the additional element of the second planetary gear set is arranged, at least in sections, axially between the first and second planetary gear sets, and
wherein the shiftable operative connection between the torque-proof element and the additional element of the second planetary gear set intersects with a shiftable operative connection between the one element of the first planetary gear set and the one element of the second planetary gear set.

2. The positive-locking shifting device of claim 1 , wherein the positive-locking shifting device is configured such that the positive-locking shifting device connects the one element of the first planetary gear set to the torque-proof element of the housing in the second shifting position.

3. The positive-locking shifting device of claim 1 , wherein a sun gear, a carrier or a ring gear of the first planetary gear set forms the one element of the first planetary gear set, wherein a ring gear of the second planetary gear set forms the one element of the second planetary gear set, and wherein a carrier of the second planetary gear set forms the additional element of the second planetary gear set.

4. The positive-locking shifting device of claim 3 , wherein a sun gear of the first planetary gear set and a sun gear of the second planetary gear set are constantly connected to each other.

5. The positive-locking shifting device of claim 1 , wherein the single element is axially displacable to a neutral position between the first shifting position and the second shifting position, in which none of the one element of the first planetary gear set, the one element of the second planetary gear set, the additional element of the second planetary gear set and the torque-proof element of the transmission are connected to one another other with the single element.

6. The positive-locking shifting device of claim 1 , wherein the single element is disposed in the first shifting position hi all forward gears of the transmission, and wherein the single element is disposed in the second shifting position in at least one reverse gear of the transmission.

Assignees

• Zahnradfabrik Friedrichshafen

Inventors

• Brehmer Martin
• Ziemer Peter
• Führer Kim

Classifications

• F16H2200/2094

  using positive clutches, e.g. dog clutches · CPC title

• F16H3/083

  with radially acting and axially controlled clutching members, e.g. sliding keys · CPC title

• F16H2200/2064

  using at least one positive clutch, e.g. dog clutch · CPC title

• F16H3/663 Primary

  with conveying rotary motion between axially spaced orbital gears, e.g. a stepped orbital gear or Ravigneaux · CPC title

• F16H2003/445

  without permanent connection between the input and the set of orbital gears · CPC title