US 7,980,153 B2Granted

Actuation system for a gearbox

AssigneeSchaeffler Technologies AG & Co. KG

InventorsMatthias Ehrlich, Norbert Esly

Life of this patent

Estimating the term…

Loading patent…

Abstract

An actuator device for a motor vehicle transmission, the motor vehicle transmission having:—at least two shafts;—a plurality of gear sets for the achievement of different gear steps;—a plurality of shift mechanisms that may be operated to produce or release a rotationally fixed shaft-gear connection; the actuator device having:—a plurality of output elements that can be moved in order to operatively engage in shift mechanisms of the transmission—a main actuator device having at least one main actuator element that is movable for the engagement of gears, the main actuator element preferably being an output element—a secondary actuator device having at least one movably mounted secondary actuator element, which is movable for the disengagement of gears, the at least one secondary actuator element preferably being an output element, the main actuator device and the secondary actuator device cooperating to produce controlled relative movements of at least two output elements.

Claims28

Dependent claims

An actuator device for a motor vehicle transmission, in which the transmission comprises:

at least two shafts;
a plurality of gear sets for the achievement of different gear steps;
and
a plurality of shift mechanisms, each of which may be actuated to produce or release a rotationally fixed shaft-gear connection, the plurality of shift mechanisms including first and second shift rails or first and second shift forks;
in which the actuator device comprises:
a main actuator device rotatable about a first axis and displaceable parallel to the first axis and having at least one shift finger that is movable about the first axis and parallel to the first axis to engage the first or second shift rail for the engagement of gears, wherein the main actuator device includes a first surface;
and,
a secondary actuator device rotatable about a second axis, different than the first axis, and having at least one disengagement finger, wherein each said disengagement finger is movable about the second axis to engage the first or second shift rail or to engage the first or second shift fork for the disengagement of gears, wherein the secondary actuator device includes a second surface;
wherein the main actuator device and the secondary actuator device cooperate to produce controlled relative movements of one of the at least one shift finger and one of the at least one disengagement finger;
during a shifting operation, the first and second surfaces are in contact;
the first and second surfaces are aligned, in a direction orthogonal to the first axis,
with a first shift finger from the at least one shift finger.

9 more elements

A motor vehicle transmission device, comprising:

a transmission that has at least two shafts and a plurality of gear sets to produce different gear steps and a plurality of shift mechanisms by means of which rotationally fixed shaft-gear connections are produced and released in order to engage or disengage gears of the transmission, for which purpose the shift mechanisms may each be operated;
and,
an actuator device for the actuation of the shift mechanisms in order to effect the engagement and disengagement of gear steps of the transmission,
a main actuator device rotatable about a first axis and displaceable parallel to the first axis and having at least one shift finger that is movable about the first axis and parallel to the first axis for the engagement of gears;
and,
a secondary actuator device rotatable about a second axis, different than the first axis, and having at least three disengagement fingers, wherein two adjacent said disengagement fingers are movable, independent of remaining disengagement fingers in the at least three disengagement fingers, for the disengagement of gears,
wherein the main actuator device and the secondary actuator device cooperate to produce controlled relative movements of one of the at least one shift finger and one of the at least one disengagement finger.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 10/906,282Filed 11 Feb 2005
Priority: DE 10 2004 007 10213 Feb 2004
Published: US 2005/0178229 A118 Aug 2005
Granted: 19 Jul 2011
Term ends: Not estimatedThe source records don’t support an estimate.

Classification13 codes

F16H 63/18
The final output mechanisms being successively actuated by progressive movement of the final actuating mechanism: the final actuating mechanism…
F16H 63/26
Each of the final output mechanisms being moved by only one of the various final actuating mechanisms: some of the movements of the final output…
F16H 59/70
Inputs being a function of gearing status: dependent on the ratio established
F16H 61/688
Without interruption of drive: with two inputs, e.g. selection of one of two torque-flow paths by clutches