WO1996023150A1 - Gear shift mechanism for a vehicle - Google Patents

Gear shift mechanism for a vehicle Download PDF

Info

Publication number
WO1996023150A1
WO1996023150A1 PCT/EP1996/000231 EP9600231W WO9623150A1 WO 1996023150 A1 WO1996023150 A1 WO 1996023150A1 EP 9600231 W EP9600231 W EP 9600231W WO 9623150 A1 WO9623150 A1 WO 9623150A1
Authority
WO
WIPO (PCT)
Prior art keywords
lever
locking
switch according
travel switch
control
Prior art date
Application number
PCT/EP1996/000231
Other languages
German (de)
French (fr)
Inventor
Walter Frei
Günter Schwarz
Original Assignee
Zf Friedrichshafen Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zf Friedrichshafen Ag filed Critical Zf Friedrichshafen Ag
Priority to EP96901745A priority Critical patent/EP0750727A1/en
Publication of WO1996023150A1 publication Critical patent/WO1996023150A1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H59/02—Selector apparatus
    • F16H59/04—Ratio selector apparatus
    • F16H59/044—Ratio selector apparatus consisting of electrical switches or sensors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H59/02—Selector apparatus
    • F16H59/0217—Selector apparatus with electric switches or sensors not for gear or range selection, e.g. for controlling auxiliary devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/16—Inhibiting or initiating shift during unfavourable conditions, e.g. preventing forward reverse shift at high vehicle speed, preventing engine over speed

Definitions

  • the invention relates to a driving switch for a vehicle according to the kind defined in the preamble of claim 1.
  • Travel switches for several forward gears and reverse gears are generally connected to the manual transmission via a linkage. This means that there is a direct mechanical control connection between the travel switch and the transmission. In addition to the various mechanical parts and their susceptibility to malfunction, a disadvantage here is also a relatively large construction volume for this mechanical connection.
  • the present invention is therefore based on the object of providing a driving switch of the type mentioned at the outset which is easy to operate by the driver and has a small structural volume, which is particularly advantageous with regard to integrability in tractor cabins.
  • the driving switch is no longer connected mechanically, but rather electrically or electronically to the transmission to be switched. This provides greater security against susceptibility to faults. In addition, a smaller construction volume is possible, although good operability can be guaranteed for the driver.
  • Fig. 1 is a side view of the driving switch according to the invention, partly in section;
  • Fig. 2 is a section along the line II-II of Fig. 1;
  • Fig. 3 shows a horizontal section according to the
  • Fig. 4 shows a section along section IV-IV of Fig. 2 and
  • Fig. 5 is a plan view of a backdrop part.
  • a travel switch is arranged as a unit in a control housing 1 and has a travel control lever 2 which is mounted in the control housing 1 so as to be pivotable in one plane via a shaft 3.
  • a shift drum 4 is connected to the drive lever 2, on which a cam disc 5 is fastened.
  • a printed circuit board 6 with microswitches 7 is also arranged in the control housing 1.
  • the number of microswitches 7 depends on the number of gears to be shifted. They are connected to a control unit 9 via a cable harness 8 (not shown in any more detail), which in turn is connected to the manual transmission 10 to be switched.
  • a plunger 11 with a roller 12 and a compression spring 13 is provided in order to obtain defined switching states with detent positions for the drive lever 2, a plunger 11 with a roller 12 and a compression spring 13 is provided.
  • the compression spring 13 engages with its side facing away from the roller 12 on the drive lever 2 or is supported there.
  • a locking magnet 14 prevents inadvertently reversing when the driving speed is too high, that is to say, for example, that there is a switchover from forward travel to reverse travel.
  • Two locking levers 15 work together with the locking magnet 14, which are mounted in the operating housing and which each engage in a locking disc 16 which are arranged on the travel control lever 2 or are connected to the latter.
  • the locking magnet 14 ensures that actuation of the drive lever 2 is only possible under certain conditions, because in the non-switchable state, the locking lever 15 is in a locking position by the locking magnet 14. Only when the driving speed is less than 6 km / h, for example, and a clutch pedal (not shown) is actuated, is the locking magnet 14 activated in such a way that the locking levers 15 disengage from the locking disks 16 and thus enable the travel control lever 2 to be adjusted .
  • the mode of operation of the locking magnet 14 is clearly evident from FIGS. 2 and 4.
  • the armature of the locking magnet 14 presses via a bracket 17 onto a roller 18, which then pivots the two locking levers 15 fastened on a shaft 22.
  • the bracket 17 is pivotably fastened on an axis 19 mounted in the operating housing 1.
  • the travel control lever 2 is limited by a link part provided with a link plate 20.
  • the link plate 20 is provided with a longitudinal slot 21 corresponding to the path length.
  • two button switches 23 are attached so that they can be operated with the thumb of the right hand. In this way, powershift gears can be switched. Signal lines lead from the key switches 23 to the control device 9.
  • the travel control lever 2 is covered by a bellows 24.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Arrangement Or Mounting Of Control Devices For Change-Speed Gearing (AREA)
  • Control Of Transmission Device (AREA)

Abstract

A gear shift mechanism for a vehicle, in particular for a tractor, with a gear lever (2) which operates a gearbox (10) containing several gears. The gear lever (2) is located in a housing (1) in which, in dependence on the position of the gear lever (2), control components (5, 6, 7) can be activated which enable the changes to be made between the individual gears of the gearbox (10) via a control device (9).

Description

Fahrschalter für ein Fahrzeug Driving switch for a vehicle
Die Erfindung betrifft einen Fahrschalter für ein Fahrzeug nach der im Oberbegriff von Anspruch 1 näher defi¬ nierten Art.The invention relates to a driving switch for a vehicle according to the kind defined in the preamble of claim 1.
Fahrschalter für mehrere Vorwärtsgänge und Rückwärts¬ gänge sind im allgemeinen über ein Gestänge mit dem Schalt- getriebe verbunden. Dies bedeutet, es liegt eine direkte mechanische Steuerverbindung zwischen Fahrschalter und Ge¬ triebe vor. Nachteilig dabei ist neben den diversen mecha¬ nischen Teilen und deren Störanfälligkeit auch ein relativ großes Bauvolumen für diese mechanische Verbindung.Travel switches for several forward gears and reverse gears are generally connected to the manual transmission via a linkage. This means that there is a direct mechanical control connection between the travel switch and the transmission. In addition to the various mechanical parts and their susceptibility to malfunction, a disadvantage here is also a relatively large construction volume for this mechanical connection.
Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, einen Fahrschalter der eingangs erwähnten Art zu schaffen, der eine gute Bedienbarkeit durch den Fahrer und ein kleines Bauvolumen aufweist, was insbesondere im Hin- blick auf eine Integrierbarkeit in Schlepperkabinen von Vorteil ist.The present invention is therefore based on the object of providing a driving switch of the type mentioned at the outset which is easy to operate by the driver and has a small structural volume, which is particularly advantageous with regard to integrability in tractor cabins.
Erfindungsgemäß wird diese Aufgabe durch die im kenn¬ zeichnenden Teil von Anspruch 1 genannten Merkmale gelöst.According to the invention, this object is achieved by the features mentioned in the characterizing part of claim 1.
Erfindungsgemäß wird nunmehr der Fahrschalter nicht mehr mechanisch, sondern elektrisch bzw. elektronisch mit dem zu schaltenden Getriebe verbunden. Auf diese Weise ist eine größere Sicherheit gegenüber einer Störanfälligkeit gegeben. Außerdem wird damit ein kleineres Bauvolumen mög¬ lich, wobei trotzdem eine gute Bedienbarkeit für den Fahrer gewährleistet sein kann. In den Unteransprüchen und in dem nachfolgend anhand der Zeichnung beschriebenen Ausführungsbeispiel sind vor¬ teilhafte Ausgestaltungen der Erfindung dargestellt. Es zeigen:According to the invention, the driving switch is no longer connected mechanically, but rather electrically or electronically to the transmission to be switched. This provides greater security against susceptibility to faults. In addition, a smaller construction volume is possible, although good operability can be guaranteed for the driver. Advantageous refinements of the invention are shown in the subclaims and in the exemplary embodiment described below with reference to the drawing. Show it:
Fig. 1 eine Seitenansicht des erfindungsgemäßen Fahrschalters, teilweise im Schnitt;Fig. 1 is a side view of the driving switch according to the invention, partly in section;
Fig. 2 einen Schnitt nach der Linie II-II der Fig. 1;Fig. 2 is a section along the line II-II of Fig. 1;
Fig. 3 einen Horizontalschnitt nach derFig. 3 shows a horizontal section according to the
Linie III-III der Fig. 2 (in vergrößerter Darstellung) ;Line III-III of Figure 2 (in an enlarged view).
Fig. 4 einen Ausschnitt gemäß Schnitt IV-IV der Fig. 2 undFig. 4 shows a section along section IV-IV of Fig. 2 and
Fig. 5 eine Draufsicht auf ein Kulissenteil.Fig. 5 is a plan view of a backdrop part.
Ein Fahrschalter ist als Einheit in einem Bedienungs¬ gehäuse 1 angeordnet und weist einen Fahrschalthebel 2 auf, der über eine Welle 3 in einer Ebene verschwenkbar in dem Bedienungsgehäuse 1 gelagert ist. Mit dem Fahrschalthebel 2 ist eine Schaltwalze 4 verbunden, auf der eine Nockenschei¬ be 5 befestigt ist.A travel switch is arranged as a unit in a control housing 1 and has a travel control lever 2 which is mounted in the control housing 1 so as to be pivotable in one plane via a shaft 3. A shift drum 4 is connected to the drive lever 2, on which a cam disc 5 is fastened.
In dem Bedienungsgehäuse 1 ist weiterhin eine Leiter¬ platte 6 mit Mikroschaltern 7 angeordnet. Die Zahl der Mikroschalter 7 richtet sich nach der Zahl der zu schalten¬ den Gänge. Über einen nicht näher dargestellten Kabel¬ strang 8 sind diese mit einem Steuergerät 9 verbunden, das wiederum mit dem zu schaltenden Schaltgetriebe 10 in Ver¬ bindung steht. Um definierte Schaltzustände mit Raststellungen für den Fahrschalthebel 2 zu erhalten, ist jeweils ein Stößel 11 mit einer Rolle 12 und einer Druckfeder 13 vor¬ gesehen. Die Druckfeder 13 greift mit ihrer von der Rolle 12 abgewandten Seite an dem Fahrschalthebel 2 an bzw. stützt sich dort ab. Ein Riegelmagnet 14 verhindert, daß versehentlich bei einer zu hohen Fahrgeschwindikeit rever¬ siert, d. h. daß zum Beispiel von Vorwärtsfahrt auf Rück¬ wärtsfahrt umgeschaltet, wird.A printed circuit board 6 with microswitches 7 is also arranged in the control housing 1. The number of microswitches 7 depends on the number of gears to be shifted. They are connected to a control unit 9 via a cable harness 8 (not shown in any more detail), which in turn is connected to the manual transmission 10 to be switched. In order to obtain defined switching states with detent positions for the drive lever 2, a plunger 11 with a roller 12 and a compression spring 13 is provided. The compression spring 13 engages with its side facing away from the roller 12 on the drive lever 2 or is supported there. A locking magnet 14 prevents inadvertently reversing when the driving speed is too high, that is to say, for example, that there is a switchover from forward travel to reverse travel.
Mit dem Riegelmagneten 14 arbeiten zwei Sperrhebel 15 zusammen, die in dem Bedienungsgehäuse gelagert sind und die jeweils in eine Sperrscheibe 16 eingreifen, die auf dem Fahrschalthebel 2 angeordnet bzw. mit diesem verbunden sind.Two locking levers 15 work together with the locking magnet 14, which are mounted in the operating housing and which each engage in a locking disc 16 which are arranged on the travel control lever 2 or are connected to the latter.
Der Riegelmagnet 14 sorgt dafür, daß nur unter be¬ stimmten Bedingungen eine Betätigung des Fahrschalthebels 2 möglich ist, denn im nicht schaltbaren Zustand sind durch den Riegelmagneten 14 die Sperrhebel 15 in einer Sperrstel¬ lung. Nur wenn die Fahrgeschwindigkeit zum Beispiel kleiner 6 km/h beträgt und ein nicht dargestelltes Kupplungspedal betätigt ist, wird der Riegelmagnet 14 derart aktiviert, daß die Sperrhebel 15 mit den Sperrscheiben 16 außer Ein- griff gelangen und damit eine Verstellung des Fahrschalt¬ hebels 2 ermöglichen.The locking magnet 14 ensures that actuation of the drive lever 2 is only possible under certain conditions, because in the non-switchable state, the locking lever 15 is in a locking position by the locking magnet 14. Only when the driving speed is less than 6 km / h, for example, and a clutch pedal (not shown) is actuated, is the locking magnet 14 activated in such a way that the locking levers 15 disengage from the locking disks 16 and thus enable the travel control lever 2 to be adjusted .
Grundsätzlich wäre auch die Anordnung nur eines Sperr¬ hebels 15 und einer damit zusammenarbeitenden Sperrschei- be 16 ausreichend. Um einen möglichst kleinen Einbau zu erreichen, sind die beiden Teile jedoch doppelt vorhanden.In principle, the arrangement of only one locking lever 15 and a locking disk 16 cooperating therewith would also be sufficient. In order to achieve the smallest possible installation, however, the two parts are duplicated.
Aus den Fig. 2 und 4 ist die Funktionsweise des Rie¬ gelmagneten 14 deutlich ersichtlich. Der Anker des Riegel- magneten 14 drückt über einen Bügel 17 auf eine Rolle 18, die dann die beiden auf einer Welle 22 befestigten Sperrhe¬ bel 15 verschwenkt. Hierzu ist der Bügel 17 entsprechend verschwenkbar auf einer in dem Bedienungsgehäuse 1 gelager¬ ten Achse 19 befestigt.The mode of operation of the locking magnet 14 is clearly evident from FIGS. 2 and 4. The armature of the locking magnet 14 presses via a bracket 17 onto a roller 18, which then pivots the two locking levers 15 fastened on a shaft 22. For this purpose, the bracket 17 is pivotably fastened on an axis 19 mounted in the operating housing 1.
Wie aus der Fig. 5 ersichtlich ist, erfolgt die Wegbe¬ grenzung des Fahrschalthebels 2 durch ein mit einem Kulis¬ senblech 20 versehenes Kulissenteil. Hierzu ist das Kulis¬ senblech 20 entsprechend der Weglänge mit einem Längs- schlitz 21 versehen.As can be seen from FIG. 5, the travel control lever 2 is limited by a link part provided with a link plate 20. For this purpose, the link plate 20 is provided with a longitudinal slot 21 corresponding to the path length.
In den Fahrschalthebel 2 integriert sind seitlich zwei Tastenschalter 23 so angebracht, daß sie mit dem Daumen der rechten Hand betätigt werden können. Auf diese Weise können Lastschaltgänge geschaltet werden. Von den Tastenschal¬ tern 23 führen Signalleitungen zu dem Steuergerät 9. Durch einen Faltenbalg 24 ist der Fahrschalthebel 2 abgedeckt. Integrated in the drive lever 2, two button switches 23 are attached so that they can be operated with the thumb of the right hand. In this way, powershift gears can be switched. Signal lines lead from the key switches 23 to the control device 9. The travel control lever 2 is covered by a bellows 24.
Bezugs zeichenReference sign
1 Bedienungsgehäuse1 control housing
2 Fahrschalthebel2 travel control levers
3 Welle3 wave
4 Schaltwalze4 shift drum
5 Nockenscheibe5 cam disc
6 Leiterplatte6 circuit board
7 Mikroschalter7 microswitches
8 Kabelstrang8 wiring harness
9 Steuergerät9 control unit
10 Schaltgetriebe10 manual transmissions
11 Stößel11 plungers
12 Rolle12 roll
13 Druckfeder13 compression spring
14 Riegelmagnet14 bolt magnet
15 Sperrhebel15 locking lever
16 SperrScheiben16 lock washers
17 Bügel17 brackets
18 Rolle18 roll
19 Achse19 axis
20 Kulissenblech20 baffle plate
21 Längsschlitz21 longitudinal slot
22 Welle22 wave
23 Tastenschalter23 key switches
24 Faltenbalg 24 bellows

Claims

P a t e n t a n s p r ü c h e Patent claims
1. Fahrschalter für ein Fahrzeug, insbesondere für einen Schlepper, mit einem Fahrschalthebel, von dem aus ein Schaltgetriebe für mehrere Gangstufen geschaltet wird, da¬ durch g e k e n n z e i c h n e t , daß der Fahrschalt¬ hebel (2) in einem Bedienungsgehäuse (1) gelagert ist, in welchem in Abhängigkeit von der Stellung des Fahrschalthe- bels (2) Steuerglieder (5, 6, 7) aktivierbar sind, die über ein Steuergerät (9) die einzelnen Gangstufen des Schaltge¬ triebes (10) schalten.1. Driving switch for a vehicle, in particular for a tractor, with a driving lever, from which a gearbox is shifted for several gear stages, characterized in that the driving lever (2) is mounted in an operating housing (1), in which, depending on the position of the drive lever (2), can activate control elements (5, 6, 7) which switch the individual gear stages of the gearbox (10) via a control unit (9).
2. Fahrschalter nach Anspruch 1, dadurch g e - k e n n z e i c h n e t , daß der Fahrschalthebel (2) mit einer Schaltscheibe oder Schaltwalze (4) und mit darauf angeordneten Schaltgliedern (6) versehen ist, die mit Mikroschaltern (7) zusammenarbeiten, die mit dem Steuerge¬ rät (9) verbunden sind.2. Travel switch according to claim 1, characterized in that the travel control lever (2) is provided with a switching disk or shift drum (4) and with switching elements (6) arranged thereon, which cooperate with microswitches (7) which cooperate with the control device advises (9) are connected.
3. Fahrschalter nach Anspruch 2, dadurch g e ¬ k e n n z e i c h n e t , daß die Schaltglieder eine auf der Schaltscheibe bzw. Schaltwalze (4) angeordnete Nocken¬ scheibe (5) aufweisen.3. Drive switch according to claim 2, characterized in that the switching elements have a cam disc (5) arranged on the switching disc or switching drum (4).
4. Fahrschalter nach Anspruch 2, dadurch g e ¬ k e n n z e i c h n e t , daß die Mikroschalter (7) an einer in dem Bedienungsgehäuse (1) angeordneten Leiter¬ platte (6) befestigt sind.4. Travel switch according to claim 2, characterized in that the microswitches (7) are attached to a printed circuit board (6) arranged in the operating housing (1).
5. Fahrschalter nach einem der Ansprüche 1 bis 4, da¬ durch g e k e n n z e i c h n e t , daß die Schalt¬ scheibe bzw. Schaltwalze (4) mit wenigstens einem Sperr¬ glied (16) versehen ist, das mit wenigstens einem in dem Bedienungsgehäuse (1) angeordneten Sperrhebel (15) zusam- menarbeitet, wobei der wenigstens eine Sperrhebel (15) durch einen Riegelmagneten (14) in Sperr- oder Freigabe¬ stellung bringbar ist.5. Travel switch according to one of claims 1 to 4, da¬ characterized in that the Schalt¬ disc or shift drum (4) is provided with at least one Sperr¬ member (16) which is arranged with at least one in the control housing (1) Locking lever (15) together The at least one locking lever (15) can be brought into a locking or release position by a locking magnet (14).
6. Fahrschalter nach Anspruch 5, dadurch e ¬ k e n n z e i c h n e t , daß der Riegelmagnet (14) mit Sensoren, Meßgliedern oder dergleichen für die Stellung des Kupplungspedales und der Fahrgeschwindigkeit verbunden ist.6. Travel switch according to claim 5, characterized in that the locking magnet (14) is connected to sensors, measuring elements or the like for the position of the clutch pedal and the driving speed.
7. Fahrschalter nach einem der Ansprüche 1 bis 6, da¬ durch g e k e n n z e i c h n e t , daß die Schalt¬ scheibe bzw. Schaltwalze (4) mit Rastgliedern (11, 12, 13) versehen ist.7. Travel switch according to one of claims 1 to 6, da¬ by g e k e n n z e i c h n e t that the Schalt¬ disc or shift drum (4) is provided with locking members (11, 12, 13).
8. Fahrschalter nach einem der Ansprüche 1 bis 7, da¬ durch g e k e n n z e i c h n e t , daß der Fahrschalt¬ hebel (2) derart in dem Bedienungsgehäuse (1) gelagert ist, daß er eine Verschwenkung in einer Ebene ausführt, wobei der Weg durch ein Kulissenteil (20) begrenzt ist. 8. Travel switch according to one of claims 1 to 7, da¬ characterized in that the Fahrschalt¬ lever (2) is mounted in the control housing (1) such that it carries out a pivoting in one plane, the path through a link part ( 20) is limited.
PCT/EP1996/000231 1995-01-27 1996-01-20 Gear shift mechanism for a vehicle WO1996023150A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP96901745A EP0750727A1 (en) 1995-01-27 1996-01-20 Gear shift mechanism for a vehicle

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19502482.6 1995-01-27
DE1995102482 DE19502482A1 (en) 1995-01-27 1995-01-27 Driving switch for a vehicle

Publications (1)

Publication Number Publication Date
WO1996023150A1 true WO1996023150A1 (en) 1996-08-01

Family

ID=7752419

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1996/000231 WO1996023150A1 (en) 1995-01-27 1996-01-20 Gear shift mechanism for a vehicle

Country Status (3)

Country Link
EP (1) EP0750727A1 (en)
DE (1) DE19502482A1 (en)
WO (1) WO1996023150A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19720780A1 (en) * 1997-05-17 1998-11-19 Zahnradfabrik Friedrichshafen Gearchange system for gearbox and powered clutch
DE102016203763A1 (en) * 2016-03-08 2017-09-14 Deere & Company Method and arrangement for controlling driving conditions of a commercial vehicle

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3287991A (en) * 1964-03-23 1966-11-29 Allis Chalmers Mfg Co Rotary control mechanism
FR2298827A1 (en) * 1975-01-23 1976-08-20 Zahnradfabrik Friedrichshafen Control lever for electrohydraulically controlled transmission - has mechanism allowing it to be moved in two adjacent planes
DE2934473A1 (en) * 1979-08-25 1981-03-26 Zf Friedrichshafen Ag, 88046 Friedrichshafen TURN-TURN SWITCH FOR MOTOR VEHICLE TRANSMISSION
EP0111065A1 (en) * 1982-12-08 1984-06-20 WABCO Westinghouse Fahrzeugbremsen GmbH Power-operated transmission with shift lock
US4507736A (en) * 1982-02-11 1985-03-26 Wabco Fahrzeugbremsen Gmbh Transmission gear shift control system
WO1992021899A1 (en) * 1991-05-27 1992-12-10 Zf Friedrichshafen Ag Gearshift device for electrically controlled gearboxes

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3287991A (en) * 1964-03-23 1966-11-29 Allis Chalmers Mfg Co Rotary control mechanism
FR2298827A1 (en) * 1975-01-23 1976-08-20 Zahnradfabrik Friedrichshafen Control lever for electrohydraulically controlled transmission - has mechanism allowing it to be moved in two adjacent planes
DE2934473A1 (en) * 1979-08-25 1981-03-26 Zf Friedrichshafen Ag, 88046 Friedrichshafen TURN-TURN SWITCH FOR MOTOR VEHICLE TRANSMISSION
US4507736A (en) * 1982-02-11 1985-03-26 Wabco Fahrzeugbremsen Gmbh Transmission gear shift control system
EP0111065A1 (en) * 1982-12-08 1984-06-20 WABCO Westinghouse Fahrzeugbremsen GmbH Power-operated transmission with shift lock
WO1992021899A1 (en) * 1991-05-27 1992-12-10 Zf Friedrichshafen Ag Gearshift device for electrically controlled gearboxes

Also Published As

Publication number Publication date
DE19502482A1 (en) 1996-08-01
EP0750727A1 (en) 1997-01-02

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