DE19834074A1 - Manual release for parking brake in automatic transmission has a manually operated hydraulic pump to provide hydraulic pressure to release the brake - Google Patents
Manual release for parking brake in automatic transmission has a manually operated hydraulic pump to provide hydraulic pressure to release the brakeInfo
- Publication number
- DE19834074A1 DE19834074A1 DE1998134074 DE19834074A DE19834074A1 DE 19834074 A1 DE19834074 A1 DE 19834074A1 DE 1998134074 DE1998134074 DE 1998134074 DE 19834074 A DE19834074 A DE 19834074A DE 19834074 A1 DE19834074 A1 DE 19834074A1
- Authority
- DE
- Germany
- Prior art keywords
- pump
- parking lock
- pressure
- lever
- automatic transmission
- Prior art date
- Legal status (The legal status 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 status listed.)
- Withdrawn
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 43
- 239000000463 material Substances 0.000 claims description 3
- 238000013016 damping Methods 0.000 claims 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 230000009975 flexible effect Effects 0.000 abstract description 7
- 230000000903 blocking effect Effects 0.000 abstract 1
- 239000010720 hydraulic oil Substances 0.000 description 3
- 230000001419 dependent effect Effects 0.000 description 1
- 210000003746 feather Anatomy 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
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
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/34—Locking or disabling mechanisms
- F16H63/3416—Parking lock mechanisms or brakes in the transmission
- F16H63/3483—Parking lock mechanisms or brakes in the transmission with hydraulic actuating means
-
- 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
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/34—Locking or disabling mechanisms
- F16H63/3416—Parking lock mechanisms or brakes in the transmission
- F16H63/3491—Emergency release or engagement of parking locks or brakes
-
- 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
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/40—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism comprising signals other than signals for actuating the final output mechanisms
- F16H63/48—Signals to a parking brake or parking lock; Control of parking locks or brakes being part of the transmission
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gear-Shifting Mechanisms (AREA)
- Control Of Transmission Device (AREA)
Abstract
Description
Die Erfindung betrifft eine Vorrichtung zur Entriege lung einer Parksperre für ein Automatik-Getriebe, bei der der Fahrer eine über einen Federspeicher eingelegte Park klinke durch manuelles Aufbringen eines hydraulischen Ge gendrucks entriegelt.The invention relates to a device for boarding a parking lock for an automatic transmission in which the driver a park inserted via a spring accumulator pawl by manually applying a hydraulic Ge unlocked.
Bei Automatik-Getrieben arretiert eine Parkklinke mit Einlegen einer Position "P" über ein Parksperrenrad eine Getriebeausgangswelle. Üblicherweise ist die Verbindung Fahrstufen-Wähleinrichtung zur Parksperre rein mechanisch, z. B. als Bowdenzug, ausgeführt. Um die Anordnung der Fahr stufen-Wähleinrichtung im Fahrzeug flexibel gestalten zu können, kann die Verbindung von der Fahrstufen-Wähleinrich tung zur Getriebesteuerung auch elektrisch erfolgen. Die DE 196 43 812 beschreibt ein Automatik-Getriebe, bei wel chem die Verbindung der Fahrstufen-Wähleinrichtung zur Ge triebesteuerung elektrisch ist. Die Parksperre wird über einen von der Getriebesteuerung zur Verfügung gestellten Systemdruck entriegelt und im drucklosen Zustand über einen Federspeicher verriegelt. Um das Fahrzeug im stromlosen Zustand abschleppen zu können, wird die Parksperre mecha nisch notentriegelt. Hierzu ist im Fahrgastraum ein Hebel vorgesehen, welcher in Wirkverbindung mit der Parkklinke steht. Die Wirkverbindung erfolgt mittels Bowdenzug vom Fahrersitz aus. Indem die Verbindung der Fahrstufen-Wähl einrichtung zur Getriebesteuerung elektrisch erfolgt, ist es möglich, die unerwünschten Schwingungen, welche durch den Zahneingriff im Automatik-Getriebe erzeugt werden und üblicherweise über den Bowdenzug die Fahrgastzelle erregen, daran zu hindern, die Fahrgastzelle ebenfalls in für den Fahrer unangenehme Schwingungen zu versetzen. In der DE 196 43 812 werden die vom Getriebe erzeugten Schwingun gen über den Bowdenzug der Vorrichtung zur Notentriegelung der Parksperre in den Fahrgastraum geleitet.A parking pawl locks on automatic transmissions Engage a position "P" over a parking lock wheel Transmission output shaft. Usually the connection is Gear selection device for parking lock purely mechanical, e.g. B. executed as a Bowden cable. To the arrangement of the driving flexible stage selection device in the vehicle can, the connection from the speed selector transmission control can also be done electrically. The DE 196 43 812 describes an automatic transmission in which chem the connection of the gear selector to Ge drive control is electrical. The parking lock is over one provided by the transmission control System pressure unlocked and in a depressurized state via a Locked spring lock. To de-energize the vehicle To be able to tow the condition, the parking lock becomes mecha niche emergency release. For this there is a lever in the passenger compartment provided, which is in operative connection with the parking handle stands. The active connection is made by means of a Bowden cable from Driver's seat. By connecting the speed step selection device for transmission control is done electrically it is possible to avoid the unwanted vibrations caused by the meshing in the automatic transmission are generated and usually excite the passenger compartment via the Bowden cable, to prevent the passenger compartment also in for the Driver uncomfortable vibrations. In the DE 196 43 812 are the vibrations generated by the transmission gene about the Bowden cable of the device for emergency release the parking lock is directed into the passenger compartment.
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung zur Entriegelung einer Parksperre für ein Automatik-Getriebe zu schaffen, welches sich durch eine Wirkverbindung vom Hebel im Fahrgastraum zur Parkklinke im Automatik-Getriebe auszeichnet, die den Schwingungen, wel che vom Automatik-Getriebe erzeugt werden, weniger Möglich keit bietet, den Fahrgastraum zu erregen. Des weiteren sollte der Hebel zur Entriegelung der Parksperre für den Fahrer leicht zugänglich sein.The present invention is based on the object a device for unlocking a parking lock for a To create automatic transmission, which is characterized by a Active connection from the lever in the passenger compartment to the parking handle in the Automatic transmission distinguishes the vibrations, wel be generated by the automatic transmission, less possible offers to excite the passenger compartment. Furthermore the lever for unlocking the parking lock for the Drivers must be easily accessible.
Die Aufgabe wird erfindungsgemäß dadurch gelöst, daß über einen Hebel im Fahrgastraum, welcher mit einer Hand pumpe wirkverbunden ist, ein hydraulischer Druck erzeugt wird, welcher der Kraft des Federspeichers, der die Park sperre einlegt, entgegenwirkt und somit die Parksperre ent riegelt. Indem die Wirkverbindung über ein Druckmedium stattfindet, ist es möglich, die Wirkverbindung im Fahrzeug so anzuordnen, daß die unerwünschten Schwingungen, welche vom Automatik-Getriebe erzeugt werden, nicht in den Fahr gastraum gelangen. Vorzugsweise wird die Wirkverbindung von der Pumpe im Fahrgastraum zur Parksperre im Automatik-Ge triebe als eine flexible Schlauchleitung ausgeführt. In dem der Hebel im Fahrgastraum, welcher die Handpumpe betä tigt, gleichzeitig der Handbremshebel ist, kann ein zusätz licher Hebel entfallen und dies hat den Vorteil, daß der Hebel vom Fahrer gut zugänglich ist. Die Pumpe, welche mit dem Handbremshebel in Verbindung steht, ist dergestalt aus geführt, daß ein ausreichender Druck zur Entriegelung der Parksperre erst dann erzeugt wird, wenn der Handbremshebel mehrmals betätigt wird. Indem die Pumpe zur Entriegelung der Parksperre als Druckmedium das im Automatik-Getriebe vorhandene Hydrauliköl verwendet, kann auf einen separaten Vorratsbehälter verzichtet werden. Der höchstmögliche Druck, welcher von der Handpumpe erzeugt werden kann, liegt in jedem Fall unter dem Systemdruck des Getriebes. Somit ist es möglich, die von der Handpumpe erzeugte Entriegelung der Parksperre über den im Druckniveau höheren Systemdruck zurückzusetzen. Hierbei wird ein Ventil, welches vom Druck der Handpumpe dergestalt umgesteuert ist, daß der Druck der Handpumpe direkt zum Federspeicher der Parksperre geleitet wird, durch Aufbringen des im Druckniveau höheren System drucks umgesteuert, so daß die Verbindung der Handpumpe zum Federspeicher getrennt und die Verbindung vom Systemdruck zum Federspeicher wieder hergestellt wird. Die Begrenzung des maximal erzeugbaren Druckes der Handpumpe kann über ein Überdruckventil, welches in der Pumpe oder im Getriebe an geordnet sein kann, begrenzt werden. Indem die Verbindung der Pumpe zur Parksperre rein hydraulisch ist, ist es mög lich, durch geeignete flexible Lagerung der Verbindungsroh re von der Handpumpe zum Automatik-Getriebe oder durch Ver wendung flexibler Schläuche die Schwingungen vom Auto matik-Getriebe von der Fahrgastzelle fernzuhalten.The object is achieved in that via a lever in the passenger compartment, which can be operated with one hand pump is operatively connected, generates a hydraulic pressure which is the power of the spring accumulator that the park locks in, counteracts and thus unlocks the parking locks. By the active connection via a pressure medium takes place, it is possible to have the operative connection in the vehicle to be arranged so that the unwanted vibrations, which generated by the automatic transmission, not in the drive get to the guest room. The active connection is preferably of the pump in the passenger compartment to the parking lock in automatic Ge drives designed as a flexible hose line. In the lever in the passenger compartment that actuates the hand pump If the handbrake lever is at the same time, an additional Licher leverage are eliminated and this has the advantage that the Lever is easily accessible by the driver. The pump, which with the hand brake lever is connected, is off led that sufficient pressure to unlock the Parking lock is only generated when the hand brake lever is pressed several times. By unlocking the pump the parking lock as a pressure medium in the automatic transmission existing hydraulic oil can be used on a separate Storage containers are dispensed with. The highest possible Pressure that can be generated by the hand pump is in any case under the system pressure of the transmission. Consequently it is possible to unlock the hand pump the parking lock via the higher system pressure in the pressure level reset. Here, a valve which is dependent on the pressure the hand pump is reversed such that the pressure of the Hand pump led directly to the spring lock of the parking lock by applying the system that is higher in pressure level pressure reversed so that the connection of the hand pump to Spring accumulator disconnected and the connection from the system pressure to the spring mechanism is restored. The limitation the maximum pressure that can be generated by the hand pump can be adjusted via a Pressure relief valve, which is in the pump or in the gearbox can be ordered, limited. By connecting the pump to the parking lock is purely hydraulic, it is possible Lich, by suitable flexible storage of the connecting tube right from the hand pump to the automatic transmission or by Ver using flexible hoses the vibrations from the car Keep the matik transmission away from the passenger compartment.
Die Erfindung wird weiter anhand der einzigen Figur erläutert. Eine Parksperre 1 wird entriegelt, indem der Systemdruck, welcher von einer Pumpe 3 erzeugt wird, von der Getriebesteuerung 2 über ein Ventil 4 auf einen Feder speicher 5, welcher aus einem Kolben 6 und einer Feder 7 besteht, geleitet wird und den Kolben 6 gegen die Feder 7 bis zu seinem unteren Anschlag bewegt. Durch die Bewegung des Kolbens 6 wird eine Stange B mit einem Konus 9 zurück gezogen und somit die Parkklinke 10 aus einem nicht darge stellten Parksperrenrad herausbewegt. Das Ventil 4 wird dabei dergestalt umgesteuert, daß die Verbindung der Pum pe 11, welche sich im Fahrgastraum befindet, zum Federspei cher 5 unterbrochen wird und die Verbindung von der Getrie besteuerung 2 zum Federspeicher 5 hergestellt wird. Wird über die Getriebesteuerung die Zuführung des Pumpendrucks der Pumpe 3 in die Leitung 12 unterbrochen und die Lei tung 12 mit dem Getriebesumpf 14 verbunden, so bewegt sich der Kolben 6 über die Feder 7 an seinem oberen Anschlag und bewegt die Stange 8 und den Konus 9, so daß die Parkklin ke 10 das nicht dargestellte Parksperrenrad verriegelt. Ist es in diesem Zustand nicht mehr möglich, über die Getriebe steuerung 2 den Druck der Pumpe 3 über die Leitung 12, das Ventil 4 und die Leitung 13 zum Federspeicher 5 zu bringen, so muß die Parksperre 1 notentriegelt werden. Hierzu wird der Kolben 15 der Pumpe 11 über einen Hebel 16 in oszillie rende Bewegung versetzt, wobei Hydrauliköl aus dem Getrie besumpf 14 zur Pumpe 11 und von dort über die Leitung 17 zum Ventil 4 gefördert wird. Überwiegt der von der Pumpe 11 erzeugte Druck in der Leitung 17 gegenüber dem Druck in der Leitung 12, so wird das Ventil 4 dergestalt umgesteuert, daß der Kolben 6 des Federspeichers 5 über die Leitung 13, das Ventil 4 von der Leitung 17 mit Druck beaufschlagt wird. Somit steht die Pumpe 11 mit dem Federspeicher 5 in Wirkverbindung und durch mehrmaliges Betätigen des He bels 16 fördert die Pumpe 11 Hydrauliköl zum Federspei cher 5 und bewegt den Kolben 6 gegen die Federkraft der Feder 7 an seinem unteren Anschlag, wobei die Stange 8 der gestalt bewegt wird, daß der Konus 9 die Parkklinke 10 freigibt und das Parksperrenrad entriegelt wird. Der maxi mal von der Pumpe 11 erzeugbare Druck wird durch ein Über druckventil 18 begrenzt. Die Druckeinstellung des Überdruckventils 18 ist dergestalt, daß das Druckniveau in der Leitung 17 niedriger ist als das Druckniveau, welches von der Pumpe 3 erzeugt werden kann.The invention is further illustrated by the single figure. A parking lock 1 is unlocked by the system pressure, which is generated by a pump 3 , from the transmission control 2 via a valve 4 to a spring memory 5 , which consists of a piston 6 and a spring 7 , is passed and the piston 6 against the spring 7 moved to its lower stop. By the movement of the piston 6 , a rod B is pulled back with a cone 9 and thus the parking pawl 10 is moved out of a parking lock wheel not shown. The valve 4 is reversed in such a way that the connection of the pump 11 , which is located in the passenger compartment, to the Federspei cher 5 is interrupted and the connection from the transmission control 2 to the spring accumulator 5 is made. If the supply of the pump pressure of the pump 3 in the line 12 is interrupted via the transmission control and the line 12 is connected to the transmission sump 14 , the piston 6 moves via the spring 7 at its upper stop and moves the rod 8 and the cone 9 , so that the Parkklin ke 10 locks the parking lock wheel, not shown. If it is no longer possible in this state to bring the pressure of the pump 3 via line 12 , valve 4 and line 13 to the spring accumulator 5 via the transmission control 2 , then the parking lock 1 must be unlocked. For this purpose, the piston 15 of the pump 11 is set in oscillating movement via a lever 16 , hydraulic oil from the transmission sump 14 to the pump 11 and from there via the line 17 to the valve 4 . If the pressure generated by the pump 11 in the line 17 outweighs the pressure in the line 12 , the valve 4 is reversed such that the piston 6 of the spring accumulator 5 acts via line 13 and the valve 4 from line 17 with pressure becomes. Thus, the pump 11 is in operative connection with the spring accumulator 5 and by pressing the lever 16 several times, the pump 11 delivers hydraulic oil to the spring accumulator 5 and moves the piston 6 against the spring force of the spring 7 at its lower stop, the rod 8 being the shape is moved that the cone 9 releases the parking pawl 10 and the parking lock wheel is unlocked. The maxi times generated by the pump 11 pressure is limited by a pressure relief valve 18 . The pressure setting of the pressure relief valve 18 is such that the pressure level in the line 17 is lower than the pressure level which can be generated by the pump 3 .
Am Überdruckventil 18 ist eine Entriegelung 19 angebracht, über welche eine Verbindung von der Leitung 17 zum Getrie besumpf 14 hergestellt werden kann, um den Druck in der Leitung 17 zurückzusetzen und somit die Parksperre erneut zu aktivieren. Die Entriegelung 19 kann auch mit der Ge triebesteuerung 2 verbunden sein, so daß die Leitung 17 mit dem Getriebesumpf 14 immer dann verbunden wird, wenn der Motor gestartet wird. Wird der Motor gestartet und über die Fahrstufen Wähleinrichtung die Parksperre entriegelt, so wird der Druck der Pumpe 3 von der Getriebesteuerung 2 wie der über die Leitung 12, das Ventil 4 zur Leitung 13 und zum Federspeicher gegeben und somit die Parksperre wieder entriegelt. Es ist vorteilhaft, die Leitungen von der Pum pe 11 zur Parksperre 1 aus flexiblem Material zu gestalten, damit die Schwingungen vom Automatik-Getriebe nicht in die Fahrgastzelle übertragen werden.On the pressure relief valve 18 , an unlocking device 19 is attached, via which a connection from the line 17 to the gearbox 14 can be established in order to reset the pressure in the line 17 and thus reactivate the parking lock. The release 19 can also be connected to the transmission control 2 Ge, so that the line 17 is connected to the gear sump 14 whenever the engine is started. If the engine is started and the parking lock is unlocked via the gear selection device, then the pressure of the pump 3 is given by the transmission control 2, such as that via line 12 , the valve 4 to line 13 and to the spring accumulator, and thus the parking lock is unlocked again. It is advantageous to design the lines from the pump 11 to the parking lock 1 from flexible material so that the vibrations from the automatic transmission are not transmitted into the passenger compartment.
Des weiteren besteht die Möglichkeit, die Leitungen von der Pumpe 11 zur Parksperre 1 als Rohre, welche in fle xiblen Lagern an der Fahrgastzelle gelagert sind, auszufüh ren. Furthermore, there is the possibility of the lines from the pump 11 to the parking lock 1 as pipes, which are stored in fle xible bearings on the passenger compartment, to be executed.
11
Parksperre
Parking lock
22nd
Getriebesteuerung
Transmission control
33rd
Pumpe
pump
44th
Ventil
Valve
55
Federspeicher
Spring accumulator
66
Kolben
piston
77
Feder
feather
88th
Stange
pole
99
Konus
cone
1010th
Parkklinke
Park handle
1111
Pumpe
pump
1212th
Leitung
management
1313
Leitung
management
1414
Getriebesumpf
Gearbox sump
1515
Kolben
piston
1616
Hebel
lever
1717th
Leitung
management
1818th
Überdruckventil
Pressure relief valve
1919th
Entriegelung
Unlocking
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1998134074 DE19834074A1 (en) | 1998-07-29 | 1998-07-29 | Manual release for parking brake in automatic transmission has a manually operated hydraulic pump to provide hydraulic pressure to release the brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1998134074 DE19834074A1 (en) | 1998-07-29 | 1998-07-29 | Manual release for parking brake in automatic transmission has a manually operated hydraulic pump to provide hydraulic pressure to release the brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE19834074A1 true DE19834074A1 (en) | 2000-02-03 |
Family
ID=7875660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE1998134074 Withdrawn DE19834074A1 (en) | 1998-07-29 | 1998-07-29 | Manual release for parking brake in automatic transmission has a manually operated hydraulic pump to provide hydraulic pressure to release the brake |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE19834074A1 (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1199234A2 (en) | 2000-10-19 | 2002-04-24 | Deere & Company | Emergency unlocking device for a parking brake in a motor vehicle |
| DE10245369A1 (en) * | 2002-09-27 | 2004-04-15 | Zf Friedrichshafen Ag | Blocking system for motor vehicle automatic gearboxes has a spring-loaded piston and locking rod which is released by hydraulically pressurizing the piston by a pump |
| DE10128430B4 (en) * | 2001-06-12 | 2006-09-28 | Zf Friedrichshafen Ag | Parking brake system |
| DE102006049639A1 (en) * | 2006-10-20 | 2008-04-24 | Audi Ag | Parking lock device for motor vehicle, has auxiliary locking unit moving automatically to locked position during energy supply, and locks locking unit, which is released from control device, in its unlocking position |
| WO2008101457A1 (en) * | 2007-02-21 | 2008-08-28 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Hydraulic arrangement for controlling a belt-driven conical disk transmission |
| DE102009028340A1 (en) | 2009-08-07 | 2011-02-10 | Zf Friedrichshafen Ag | Device for emergency release of a parking brake of an automatic transmission of a motor vehicle |
| CN104903624A (en) * | 2013-01-29 | 2015-09-09 | 爱信艾达株式会社 | Vehicle power transmission device |
| DE10328019B4 (en) * | 2002-06-24 | 2017-05-18 | Schaeffler Technologies AG & Co. KG | Manual transmission, in particular manual transmission for a motor vehicle |
| DE102019134730A1 (en) * | 2019-12-17 | 2021-06-17 | Schaeffler Technologies AG & Co. KG | Parking lock for a motor vehicle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0372858A2 (en) * | 1988-12-09 | 1990-06-13 | Babcock Industries Inc. | Transmission and brake interlock system |
| US5217098A (en) * | 1992-10-19 | 1993-06-08 | Adams Rite Manufacturing Company | Apparatus for integrating transmission control and brake control |
| DE4127991C2 (en) * | 1991-08-23 | 1997-07-03 | Zahnradfabrik Friedrichshafen | Parking lock for automatic transmissions of motor vehicles |
| DE19643812A1 (en) * | 1996-10-30 | 1998-05-07 | Zahnradfabrik Friedrichshafen | Parking lock for automatic gear |
-
1998
- 1998-07-29 DE DE1998134074 patent/DE19834074A1/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0372858A2 (en) * | 1988-12-09 | 1990-06-13 | Babcock Industries Inc. | Transmission and brake interlock system |
| DE4127991C2 (en) * | 1991-08-23 | 1997-07-03 | Zahnradfabrik Friedrichshafen | Parking lock for automatic transmissions of motor vehicles |
| US5217098A (en) * | 1992-10-19 | 1993-06-08 | Adams Rite Manufacturing Company | Apparatus for integrating transmission control and brake control |
| DE19643812A1 (en) * | 1996-10-30 | 1998-05-07 | Zahnradfabrik Friedrichshafen | Parking lock for automatic gear |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10052259B4 (en) * | 2000-10-19 | 2009-10-15 | Deere & Company, Moline | Emergency unlocking device for the parking brake of a motor vehicle |
| DE10052259A1 (en) * | 2000-10-19 | 2002-05-29 | Deere & Co | Emergency release device for the parking lock of a motor vehicle |
| US6581738B2 (en) | 2000-10-19 | 2003-06-24 | Deere & Company | Parking lock for a motor vehicle with an emergency release device |
| EP1199234A3 (en) * | 2000-10-19 | 2006-06-07 | Deere & Company | Emergency unlocking device for a parking brake in a motor vehicle |
| EP1199234A2 (en) | 2000-10-19 | 2002-04-24 | Deere & Company | Emergency unlocking device for a parking brake in a motor vehicle |
| DE10128430B4 (en) * | 2001-06-12 | 2006-09-28 | Zf Friedrichshafen Ag | Parking brake system |
| DE10328019B4 (en) * | 2002-06-24 | 2017-05-18 | Schaeffler Technologies AG & Co. KG | Manual transmission, in particular manual transmission for a motor vehicle |
| DE10245369A1 (en) * | 2002-09-27 | 2004-04-15 | Zf Friedrichshafen Ag | Blocking system for motor vehicle automatic gearboxes has a spring-loaded piston and locking rod which is released by hydraulically pressurizing the piston by a pump |
| DE102006049639B4 (en) * | 2006-10-20 | 2017-04-27 | Audi Ag | Parking lock device for motor vehicles and method for activating and deactivating a parking lock device |
| DE102006049639A1 (en) * | 2006-10-20 | 2008-04-24 | Audi Ag | Parking lock device for motor vehicle, has auxiliary locking unit moving automatically to locked position during energy supply, and locks locking unit, which is released from control device, in its unlocking position |
| WO2008101457A1 (en) * | 2007-02-21 | 2008-08-28 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Hydraulic arrangement for controlling a belt-driven conical disk transmission |
| US8770057B2 (en) | 2009-08-07 | 2014-07-08 | Zf Friedrichshafen Ag | Device for emergency release of an automotive parking interlock |
| DE102009028340A1 (en) | 2009-08-07 | 2011-02-10 | Zf Friedrichshafen Ag | Device for emergency release of a parking brake of an automatic transmission of a motor vehicle |
| CN104903624A (en) * | 2013-01-29 | 2015-09-09 | 爱信艾达株式会社 | Vehicle power transmission device |
| CN104903624B (en) * | 2013-01-29 | 2017-03-15 | 爱信艾达株式会社 | Transmission device for vehicle |
| DE102019134730A1 (en) * | 2019-12-17 | 2021-06-17 | Schaeffler Technologies AG & Co. KG | Parking lock for a motor vehicle |
| WO2021121484A1 (en) | 2019-12-17 | 2021-06-24 | Schaeffler Technologies AG & Co. KG | Parking lock for a motor vehicle and method for operating a parking lock |
| DE102019134730B4 (en) | 2019-12-17 | 2021-11-18 | Schaeffler Technologies AG & Co. KG | Parking lock for a motor vehicle |
| US11976725B2 (en) | 2019-12-17 | 2024-05-07 | Schaeffler Technologies AG & Co. KG | Parking lock for a motor vehicle and method for operating a parking lock |
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