US 10,309,490 B2Granted

Device for switching a first and second switching element, and transmission comprising such a device

AssigneeZF Friedrichshafen AG

InventorPeter Ziemer

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Abstract

A shifting device includes a first shifting element operable to establish a torque-proof, positive-locking connection between a first element and a second element. A second shifting element is operable to establish a torque-proof, positive-locking connection between the second element and a third element. The first element is coupled to the third element such that displacement of the first element by a common actuating element in one of a first and a second displacement direction provides rectified displacement of the third element. The third element is coupled to the first element such that displacement of the third element by the common actuating element in one of the first and second displacement directions provides rectified displacement of the first element. The second element is fixed in position in both the first and second displacement directions. A related transmission is also provided.

Claims12

Dependent claims

A planetary transmission, comprising:

a shifting device for shifting a first shifting element and a second shifting element;
wherein the first shifting element is operable to establish a torque-proof, positive-locking connection between a first element and a second element, a common actuating element being longitudinally displaceable along a first displacement direction during actuation of the first shifting element;
wherein the second shifting element is operable to establish a torque-proof, positive-locking connection between the second element and a third element, the common actuating element being longitudinally displaceable along a second displacement direction during actuation of the second shifting element, the second displacement direction being opposite the first displacement direction;
wherein the first shifting element is closed and the second shifting element is open in a first shifting state, and the first shifting element is open and the second shifting element is closed in a second shifting state,
wherein the first element is coupled to the third element such that displacement of the first element by the common actuating element in one of the first and second displacement directions provides rectified displacement of the third element, the third element is coupled to the first element such that displacement of the third element by the common actuating element in one of the first and second displacement directions provides rectified displacement of the first element, and the second element is fixed in position in both the first and second displacement directions.

2 more elements

A transmission for a motor vehicle, comprising:

a main gear set, the main gear set having at least two planetary gear sets with a plurality of shafts;
a first shifting element and a second shifting element allocated to at least one selected shaft of the main gear set, a torque-proof, positive-locking connection establishable between the selected shaft of the main gear set and an element of the transmission through the first shifting element, a torque-proof, positive-locking connection establishable between the selected shaft of the main gear set and an additional element of the transmission through the second shifting element,
wherein the first shifting element is closed and the second shifting element is open in a first shifting state, the first shifting element is open and the second shifting element is closed in a second shifting state,
wherein the selected shaft of the main gear set is fixed in an axial direction, one or more synchronization toothings are formed at the selected shaft of the main gear set through which the first and second shifting elements form the positive-locking, torque-proof connection with the selected shaft, the complementary synchronization toothings of the first and second shifting elements being coupled with each other and axially displaceable such that the synchronization toothing of the first shifting element is engageable with the synchronization toothing at the selected shaft of the main gear set upon displacement of a common actuating element along a first displacement direction parallel to an axis of the selected shaft of the main gear set, and the synchronization toothing of the second shifting element is engageable with the synchronization toothing at the selected shaft of the main gear set upon displacement of the common actuating element along a second displacement direction opposite to the first displacement direction.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 15/309,868Filed 9 Apr 2015
Priority: DE 10 2014 208 7949 May 2014
Published: US 2017/0146098 A125 May 2017
Granted: 4 Jun 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification17 codes

F16H 3/66
Gearings having three or more central gears: composed of a number of gear trains without drive passing from one train to another
B60K 6/365
Characterised by the transmission gearings: with the gears having orbital motion
B60K 6/387
Characterised by the driveline clutches: actuated clutches, i.e. clutches engaged or disengaged by electric, hydraulic or mechanical actuating means
B60K 6/547
Transmission for changing ratio: the transmission being a stepped gearing

Family

US 2017/0146098 A1Pre-grant publication · published 25 May 2017
US 10,309,490 B2This patent

From the US filing history. Foreign family members aren’t listed.

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