Device for moving an operating element of an automatic transmission of a vehicle into a park position, method for operating such a device, and shifting device for shifting an automatic transmission of a vehicle

Patent metadata

Field	Value
Publication number	US-10100926-B2
Application number	US-201415029755-A
Country	US
Kind code	B2
Filing date	Sep 17, 2014
Priority date	Oct 17, 2013
Publication date	Oct 16, 2018
Grant date	Oct 16, 2018

Abstract

A device for shifting an operation element of an automatic transmission of a vehicle in a parking position includes a rotationally mounted locking comb directly coupled with the operation element, with a stop member, a locking pin which is designed in a first position to fix the locking comb and in a second position to release the locking comb for a rotational movement, and a rotationally mounted set collar with a switching cam and a catch, wherein the switching cam is formed at a rotational movement of the set collar to move the locking pin from the first position to the second position, and the catch is formed at the rotational movement of the set collar to entrain the stop member to turn the locking comb so far that the operation element is shifted to the parking position.

First claim

What is claimed is:

1. A device for shifting an operation element of an automatic transmission of a vehicle to a parking position, the device comprising:
a rotationally mounted locking comb directly coupled with the operation element with a stop member;
a locking pin which is formed in a first position to fix the locking comb and in a second position to release the locking comb for a rotational movement; and
a rotationally mounted set collar with a switching cam and a catch, wherein the switching cam is formed at rotational movement of the set collar to move the locking pin from the first position to the second position, and the catch is formed at a rotational movement of the set collar to entrain the stop member to turn the locking comb for shifting the operation element to the parking position.

2. The device of claim 1 , wherein the device further comprises a spring element connected with the locking pin, wherein the switching cam is formed to move the locking pin against the force of the spring element from the first position to the second position.

3. The device of claim 1 , wherein the locking comb is arranged between the set collar and the operation element and the locking pin is arranged radially with respect to the locking comb and the set collar and is designed to be moved in a radial direction with respect to the locking comb and the set collar between the first position and the second position.

4. The device of claim 1 , wherein the locking pin comprises a projection and is designed to be moved at the rotational movement of the set collar from the first position to the second position by setting the projection on the switching cam.

5. The device of claim 1 , wherein the catch and the switching cam are formed on the set collar offset by a predetermined angle in relation to the catch to form an approach of the switching cam.

6. The device of claim 1 , wherein the switching cam is formed by a section of the set collar, which is characterized by a larger radial expansion of the set collar than in a remaining section of the set collar, wherein with respect to a direction of the rotational movement of the set collar an initial section of the switching cam is characterized by a beveled first transition between the section and the remaining section, and an end section of the switching cam is characterized by a stepped second transition between the section and the remaining section.

7. The device of claim 1 , wherein the device further comprises a coupling element coupling the set collar with an actuator which is designed to transmit a torque of the actuator to the set collar in order to produce the rotational movement of the set collar.

8. The device of claim 1 , wherein the set collar comprises at least one further switching cam and at least one further catch.

9. A shifting device for shifting an automatic transmission of a vehicle, the shifting device comprising:
an operation element that is designed to be shifted between a parking position of the automatic transmission and at least a driving position of the automatic transmission; and
a device for shifting the operation element comprising:
a rotationally mounted locking comb directly coupled with the operation element with a stop member;
a locking pin which is formed in a first position to fix the locking comb and in a second position to release the locking comb for a rotational movement; and
a rotationally mounted set collar with a switching cam and a catch, wherein the switching cam is formed at rotational movement of the set collar to move the locking pin from the first position to the second position, and the catch is formed at a rotational movement of the set collar to entrain the stop member to turn the locking comb for shifting the operation element to the parking position.

10. A method for operating a device for shifting an operation element of an automatic transmission of a vehicle to a parking position, wherein the device comprises a rotationally mounted locking comb directly coupled with the operation element with a stop member, a locking pin which is designed in a first position to fix the locking comb and in a second position release the locking comb for a rotational movement, and a rotationally mounted set collar with a switching cam and a catch, the method comprising:
rotating of the set collar to move the locking pin from the first position to the second position by means of the switching cam, and to entrain the stop member by means of the catch in order to turn the locking comb so fat that the operation element is shifted to the parking position.

11. The device of claim 2 , wherein the locking comb is arranged between the set collar and the operation element and the locking pin is arranged radially with respect to the locking comb and the set collar and is designed to be moved in radial direction with respect to the locking comb and the set collar between the first position and the second position.

12. The device of claim 2 , wherein the locking pin comprises a projection and is designed to be moved at the rotational movement of the set collar from the first position to the second position by setting the projection on the switching cam.

13. The device of claim 3 , wherein the locking pin comprises a projection and is designed to be moved at the rotational movement of the set collar from the first position to the second position by setting the projection on the switching cam.

14. The device of claim 2 , wherein the catch and the switching cam are formed on the set collar offset by a predetermined angle in relation to the catch to form an approach of the switching cam.

15. The device of claim 3 , wherein the catch and the switching cam are formed on the set collar offset by a predetermined angle in relation to the catch to form an approach of the switching cam.

16. The device of claim 4 , wherein the catch and the switching cam are formed on the set collar offset by a predetermined angle in relation to the catch to form an approach of the switching cam.

17. The device of claim 2 , wherein the switching cam is formed by a section of the set collar, which is characterized by a larger radial expansion of the set collar than in a remaining section of the set collar, wherein with respect to a direction of the rotational movement of the set collar an initial section of the switching cam is characterized by a beveled first transition between the section and the remaining section, and an end section of the switching cam is characterized by a stepped second transition between the section and the remaining section.

18. The device of claim 1 , wherein the device further comprises a coupling element coupling the set collar with an actuator which is designed to transmit a torque of the actuator to the set collar in order to produce the rotational movement of the set collar.

19. The device of claim 1 , wherein the set collar comprises at least one further switching cam and at least one further catch.

20. The shifting device of claim 9 , wherein the device further comprises a spring element connected with the locking pin, wherein the switching cam is formed to move the locking pin against the force of the spring element from the first position to the second position.

Assignees

• Zahnradfabrik Friedrichshafen
• Lemfoerder Electronic Gmbh

Inventors

• Rake Ludger
• Giefer Andreas
• Rosentreter Sascha
• Hartrampf Ralf

Classifications

• F16H61/22 Primary

  Locking {of the control input devices} (constructional features of locking or disabling mechanisms F16H63/34) · CPC title

• F16H2059/081

  using knops or discs for rotary range selection · CPC title

• F16H59/08 Primary

  Range selector apparatus · CPC title