IP Library Granted Patent US 8,584,544
Granted Patent B2
US 8,584,544 · App. 11/440,765 · Granted Nov 19, 2013

Method and device for controlling a gearshift mechanism

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Quick Facts
Patent No.
US 8,584,544
App. No.
11/440,765
Granted
Nov 19, 2013
Kind
B2
Abstract

In a method for controlling a gearshift mechanism, the gearshift mechanism having at least one shifting element, a gear release element, a shift actuator and a selector actuator, in which the shifting element is movable by the selector actuator along a selector track, and is movable from the selector track at sites spaced from each other by means of the shift actuator into shift tracks for engagement of a gear, and the gear release element is coupled to the shifting element, so that during engagement of the new gear, it disengages a previously engaged gear, the shifting element, after engagement of a gear, is moved by the shift actuator in the direction toward the selector track into a rest position right in front of the discharge of the shift track into the selector track, in which it remains, until it is moved for engagement of a new gear.

Claims (5)

1. A method for controlling a gearshift mechanism, said gearshift mechanism having at least one shifting element, a gear release element, a shift actuator and a selector actuator, in which the shifting element is movable by the selector actuator along a selector track, and is movable from the selector track at sites spaced from each other into shift tracks by means of the shift actuator for engagement of a gear, and the gear release element is coupled to the shifting element, so that during engagement of the gear, the gear release element disengages a previously engaged gear, comprising the step of moving the shifting element by the shift actuator, after engagement of the gear, in the direction toward the selector track into a rest position located adjacent to the intersection of the shift track and the selector track, in which rest position the shifting element remains, until the shifting element is moved for engagement of a new gear, wherein moving the shifting element into the rest position after engagement of the gear significantly shortens a first path the shifting element must travel between the gear and the new gear during engagement of the new gear.

2. The method according to claim 1 , wherein the shifting element is moved by the shift actuator during or immediately after engagement of the gear by additional movement against an end stop at an end of the shift track belonging to the engaged gear and, after reaching the rest position, is moved by the selector actuator against a side edge of the shift track.

3. A device for controlling a gearshift mechanism, said gearshift mechanism comprising at least one shifting element ( 111 ), a gear release element ( 113 , 116 ) and a selector actuator ( 32 , 34 ), a shift actuator ( 36 , 38 ), in which the shifting element is movable by the selector actuator along a selector track, and is movable from the selector track at sites spaced from each other by means of the shift actuator into shift tracks (S 1 , S 2 , S 3 ) for engagement of a gear, and the gear release element is coupled to the shifting element, so that during engagement of the gear, the gear release element disengages a previously engaged gear, and a control device ( 40 ) to control the selector actuator and the shift actuator, wherein the control device ( 40 ) controls the selector actuator ( 32 , 34 ) and the shift actuator ( 36 , 38 ) to move the shifting element by the shift actuator, after engagement of the gear, in the direction toward the selector track into a rest position located adjacent to the intersection of the shift track and the selector track, in which rest position the shifting element remains, until the shifting element is moved for engagement of a new gear, wherein moving the shifting element into the rest position after engagement of the gear significantly shortens a first path the shifting element must travel between the gear and the new gear during engagement of the new gear.

4. The device according to claim 3 , wherein the shifting element is moved by the shift actuator during or immediately after engagement of the gear by additional movement against an end stop at an end of the shift track belonging to the engaged gear and, after reaching the rest position, is moved by the selector actuator against a side edge of the shift track.

5. The device recited in claim 3 wherein the rest position is located from the selector track approximately one tenth of a distance of a second path, wherein the second path runs between the selector track and an end stop of the shift track.

Assignments (5)
CORRECTIVE ASSIGNMENT TO CORRECT THE PROPERTY NUMBERS PREVIOUSLY RECORDED ON REEL 037732 FRAME 0347. ASSIGNOR(S) HEREBY CONFIRMS THE APP. NO. 14/553248 SHOULD BE APP. NO. 14/553258. Recorded Oct 11, 2016
From: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG
To: SCHAEFFLER TECHNOLOGIES AG & CO. KG
Reel/Frame 040404/0530 →
MERGER AND CHANGE OF NAME Recorded Feb 5, 2016
From: SCHAEFFLER TECHNOLOGIES AG & CO. KG; SCHAEFFLER VERWALTUNGS 5 GMBH
To: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG
Reel/Frame 037732/0228 →
CHANGE OF NAME Recorded Feb 5, 2016
From: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG
To: SCHAEFFLER TECHNOLOGIES AG & CO. KG
Reel/Frame 037732/0347 →
MERGER Recorded Apr 25, 2012
From: LUK LAMELLEN UND KUPPLUNGSBAU BETEILIGUNGS KG
To: LUK VERMOEGENSVERWALTUNGSGESELLSCHAFT MBH
Reel/Frame 028106/0668 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 25, 2012
From: LUK VERMOEGENSVERWALTUNGSGESELLSCHAFT MBH
To: SCHAEFFLER TECHNOLOGIES AG & CO. KG
Reel/Frame 028106/0935 →