DE102005049177A1 - Parking lock system for automatic transmission for motor vehicle, has retaining device with container filled with electrorheological fluid, where fluid is solidified during supplying current to coil and movement of piston is inhibited - Google Patents
Parking lock system for automatic transmission for motor vehicle, has retaining device with container filled with electrorheological fluid, where fluid is solidified during supplying current to coil and movement of piston is inhibited Download PDFInfo
- Publication number
- DE102005049177A1 DE102005049177A1 DE200510049177 DE102005049177A DE102005049177A1 DE 102005049177 A1 DE102005049177 A1 DE 102005049177A1 DE 200510049177 DE200510049177 DE 200510049177 DE 102005049177 A DE102005049177 A DE 102005049177A DE 102005049177 A1 DE102005049177 A1 DE 102005049177A1
- Authority
- DE
- Germany
- Prior art keywords
- parking lock
- piston
- coil
- lock system
- parking
- 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- Withdrawn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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/06—Use of special fluids, e.g. liquid metal; Special adaptations of fluid-pressure systems, or control of elements therefor, to the use of such fluids
- F15B21/065—Use of electro- or magnetosensitive fluids, e.g. electrorheological fluid
-
- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Braking Arrangements (AREA)
- Regulating Braking Force (AREA)
- Braking Systems And Boosters (AREA)
Abstract
Description
Die Erfindung bezieht sich auf ein Parksperrensystem für automatische Getriebe in Kraftfahrzeugen nach dem Oberbegriff des Hauptanspruchs sowie einem Verfahren zur Steuerung eines Parksperrensystems entsprechend dem Anspruch 7.The The invention relates to a parking lock system for automatic Transmission in motor vehicles according to the preamble of the main claim and a method for controlling a parking brake system accordingly to claim 7.
Aus dem Stand der Technik sind Parksperrensysteme für automatische Getriebe bekannt. Üblicherweise weisen derartige Systeme eine vorgespannte Feder auf, über welche die Parksperre eingelegt wird. Zum Lösen der Parksperre wird eine druckgesteuerte Löseeinrichtung, wie z. B. ein hydraulisch oder pneumatisch betätigter Zylinder, verwendet. Damit die Feder die Parksperre nicht unbeabsichtigt einlegt, wird ein Parksperrensystem meist im gelösten Zustand verriegelt.Out In the prior art, parking lock systems for automatic transmissions are known. Usually Such systems have a preloaded spring over which the parking lock is engaged. To release the parking brake is a pressure-controlled Release device, such as As a hydraulically or pneumatically actuated cylinder used. So that the spring does not insert the parking lock unintentionally, is a parking lock system usually locked in the released state.
Aus
der
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine Verriegelungsvorrichtung zu schaffen, mit welcher die Verriegelung der Parksperre einfach und kostengünstig hergestellt werden kann.Of the present invention is based on the object, a locking device to create, with which the locking of the parking lock easy and cost-effective can be produced.
Erfindungsgemäß wird die Aufgabe durch eine Haltevorrichtung gelöst, für welche eine elektrorheologische Flüssigkeit in einem Behälter verwendet wird. Die Flüssigkeit wird durch Bestromen einer Spule zeitweise mit einem elektrischen Feld beaufschlagt.According to the invention Problem solved by a holding device, for which an electrorheological liquid in a container is used. The liquid is powered by energizing a coil temporarily with an electric Field applied.
Von elektrorheologischen Flüssigkeiten ist allgemein bekannt, dass sie fest werden, sobald sie in ein elektrisches Feld gebracht werden. Dies beruht darauf, dass sich in einer elektrorheologischen Flüssigkeit eine Vielzahl an polarisierbaren Teilchen befinden. Werden diese in ein elektrisches Feld gebracht, bilden die Partikel Dipole und verbinden sich zu langen Ketten. Dadurch wird die Flüssigkeit im elektrischen Feld fest, sie erstarrt zu einem zähen Gel. Sobald man das elektrische Feld abschaltet, wird die Suspension wieder flüssig.From electrorheological fluids It is common knowledge that they become solid as soon as they become electrical Field be brought. This is because of being in an electrorheological liquid a plurality of polarizable particles are located. Be this placed in an electric field, the particles form dipoles and connect to long chains. This will make the liquid stuck in the electric field, it solidifies into a tough gel. As soon as the electric field is switched off, the suspension becomes again liquid.
Erfindungsgemäß wird also ein Parksperrensystem für ein automatisches Getriebe für Kraftfahrzeuge vorgeschlagen, bei welchem durch einen Federspeicher die Parksperre einlegt und über eine druckgesteuerte Löseeinrichtung wieder gelöst wird, wobei die Parksperre durch eine Haltevorrichtung in der gelösten Stellung gehalten werden kann. Dabei besteht die Haltevorrich- tung zumindest aus einem Behälter mit einem Kolben und einer Spule. Der Kolben ist in dem mit elektrorheologischer Flüssigkeit gefüllten Behälter angeordnet und besitzt vorteilhafterweise mindestens eine Bohrung. Um den Behälter herum ist eine elektrische Spule angeordnet. Wird nun die Spule mit Strom beaufschlagt, bildet sich im Behälter ein elektrisches Feld und die Flüssigkeit erstarrt.Thus, according to the invention a parking lock system for an automatic transmission for Motor vehicles proposed, in which by a spring accumulator the parking lock inserts and over a pressure-controlled release device solved again is, with the parking brake by a holding device in the released position can be held. In this case, the retaining device consists at least from a container with a piston and a coil. The piston is in the with electrorheological Liquid filled containers arranged and advantageously has at least one bore. Around the container an electrical coil is arranged. Will now the coil with power pressurized forms in the tank an electric field and the liquid stiffens.
In einer Ausgestaltung ist die Haltevorrichtung nun mit der druckgesteuerten Löseeinrichtung verbunden, mit welcher die Parksperre aus ihrer Verrastung gelöst wird.In In one embodiment, the holding device is now with the pressure-controlled Dissolving device connected, with which the parking lock is released from its locking.
In einer weiteren Ausgestaltung ist die druckgesteuerte Löseeinrichtung über eine Betätigungsvorrichtung mit der Parksperre verbunden. Durch eine Bewegung der Betätigungsvorrichtung wird die Parksperre in ihrer Verrastung ein- beziehungsweise ausgelegt.In In another embodiment, the pressure-controlled release device is provided with a actuator connected to the parking brake. By a movement of the actuator the parking brake is engaged or disengaged in their latching.
In einer Ausgestaltung ist die Betätigungsvorrichtung mit einem Federspeicher verbunden, welcher beim Lösen der Parksperre gespannt wird. Die im Federspeicher gespeicherte Energie wird dazu verwendet, die Parksperre in ihre Verrastung einzulegen, wodurch das Getriebe blockiert wird.In One embodiment is the actuating device connected to a spring store, which when releasing the Parking lock is stretched. The stored energy in the spring store is used to engage the parking lock in their latching, whereby the transmission is blocked.
In einer bevorzugten Ausgestaltung ist der Kolben mit mindestens einer Bohrung ausgestattet. Über die Durchmesser der mindestens einen Bohrung ist das Dämpfungsverhalten der Halteeinrichtung einstellbar.In In a preferred embodiment, the piston is at least one Equipped bore. about the diameter of the at least one bore is the damping behavior the holding device adjustable.
In einer weiteren Ausgestaltung entspricht die druckgesteuerte Löseeinrichtung einem hydraulischen Ventil.In a further embodiment corresponds to the pressure-controlled release device a hydraulic valve.
Durch ein erfindungsgemäßes Verfahren wird die Spule der Haltevorrichtung bestromt, nachdem die Parksperre gelöst ist. Dadurch wird die Parksperre in ihrer gelösten Stellung auf einfache und kostengünstige Weise gehalten, ohne dass sich der Federspeicher entspannen kann. Durch die Verwendung der erfindungsgemäßen Haltevorrichtung mit elektrorheologischer Flüssigkeit kann auf die Verwendung eines Elektromagneten verzichtet werden. Die Spule der Haltevorrichtung benötigt dabei nur einen sehr geringen Strom.By a method according to the invention, the coil of the holding device is energized after the parking brake is released. As a result, the parking brake is held in its released position in a simple and cost-effective manner, without the spring can relax. By using the holding device according to the invention with electrorheological fluid can on Ver Use of an electromagnet can be dispensed with. The coil of the holding device requires only a very small current.
Zur weiteren Verdeutlichung der Erfindung sowie dessen Ausführungsformen ist der Beschreibung eine Zeichnung beigefügt.to further clarification of the invention and its embodiments the description is accompanied by a drawing.
Die
einzige Figur beschreibt den Aufbau eines erfindungsgemäßen Parksperrensystems.
Demnach ist eine Parksperre
- 11
- Parksperreparking lock
- 22
- Federspeicherspring
- 33
- Haltevorrichtungholder
- 44
- Zylindercylinder
- 55
- Kolbenpiston
- 66
- SpuleKitchen sink
- 77
- elektrorheologische Flüssigkeitelectrorheological liquid
- 88th
- Betätigungsgliedactuator
- 99
- VentilValve
- 1010
- Bohrungdrilling
- 1111
- Druckkolbenpressure piston
- 1212
- Öffnungenopenings
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200510049177 DE102005049177A1 (en) | 2005-10-14 | 2005-10-14 | Parking lock system for automatic transmission for motor vehicle, has retaining device with container filled with electrorheological fluid, where fluid is solidified during supplying current to coil and movement of piston is inhibited |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200510049177 DE102005049177A1 (en) | 2005-10-14 | 2005-10-14 | Parking lock system for automatic transmission for motor vehicle, has retaining device with container filled with electrorheological fluid, where fluid is solidified during supplying current to coil and movement of piston is inhibited |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102005049177A1 true DE102005049177A1 (en) | 2007-04-19 |
Family
ID=37896373
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200510049177 Withdrawn DE102005049177A1 (en) | 2005-10-14 | 2005-10-14 | Parking lock system for automatic transmission for motor vehicle, has retaining device with container filled with electrorheological fluid, where fluid is solidified during supplying current to coil and movement of piston is inhibited |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102005049177A1 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007010940A1 (en) * | 2007-03-07 | 2008-09-11 | Audi Ag | Device for actuating the parking brake of an automatic gearbox of a vehicle comprises a deactivating delaying part for decelerating the adjustment of a blocking element between the released position and the blocked position |
WO2010048947A1 (en) * | 2008-10-29 | 2010-05-06 | Zf Friedrichshafen Ag | Control element for a parking lock |
DE102008054466A1 (en) * | 2008-12-10 | 2010-06-17 | Zf Friedrichshafen Ag | Parking lock device for motor vehicle drive, has parking lock wheel, pawl, locking element and guide plate, where pawl is engaged in parking lock wheel by inserting parking lock and is locked by locking element |
DE102008054465A1 (en) * | 2008-12-10 | 2010-06-17 | Zf Friedrichshafen Ag | Parking lock for automatic transmission of motor vehicle, has bolt forming one of electrically conducting component or magnetic component of eddy current brake, where other component is assigned to housing structure |
DE102009035348A1 (en) | 2009-07-30 | 2011-02-03 | Volkswagen Ag | Parking lock device for automatic or automated motor vehicle transmission, has slide valve provided between relief valve and hydraulic cylinder in pressure pipe and servo-controlled by shift valve |
WO2011047774A1 (en) * | 2009-10-19 | 2011-04-28 | Hydac Technology Gmbh | Device for the pulsed release of an amount of fluid which can be stored in an accumulator housing |
EP3076049A3 (en) * | 2015-03-27 | 2016-11-30 | Hamilton Sundstrand Corporation | Rheologic fluid coupler for redundant linear electromechanical actuators |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19834156A1 (en) * | 1998-07-29 | 2000-02-03 | Zahnradfabrik Friedrichshafen | Parking lock, in particular for automatic transmissions of motor vehicles |
DE19955959A1 (en) * | 1999-11-19 | 2001-05-23 | Schenck Pegasus Gmbh | Pressure medium motor based on electrorheological fluids |
DE102004007621A1 (en) * | 2004-02-17 | 2005-09-01 | Trw Automotive Gmbh | Locking mechanism for safety systems in cars etc. with closure element movable from release position into blocking one, with generator of magnetic and electric field |
-
2005
- 2005-10-14 DE DE200510049177 patent/DE102005049177A1/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19834156A1 (en) * | 1998-07-29 | 2000-02-03 | Zahnradfabrik Friedrichshafen | Parking lock, in particular for automatic transmissions of motor vehicles |
DE19955959A1 (en) * | 1999-11-19 | 2001-05-23 | Schenck Pegasus Gmbh | Pressure medium motor based on electrorheological fluids |
DE102004007621A1 (en) * | 2004-02-17 | 2005-09-01 | Trw Automotive Gmbh | Locking mechanism for safety systems in cars etc. with closure element movable from release position into blocking one, with generator of magnetic and electric field |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007010940B4 (en) * | 2007-03-07 | 2013-09-12 | Audi Ag | Device and method for actuating a parking lock of a transmission |
DE102007010940A1 (en) * | 2007-03-07 | 2008-09-11 | Audi Ag | Device for actuating the parking brake of an automatic gearbox of a vehicle comprises a deactivating delaying part for decelerating the adjustment of a blocking element between the released position and the blocked position |
WO2010048947A1 (en) * | 2008-10-29 | 2010-05-06 | Zf Friedrichshafen Ag | Control element for a parking lock |
US9073522B2 (en) | 2008-10-29 | 2015-07-07 | Zf Friedrichshafen Ag | Control element for a parking lock |
CN102197248B (en) * | 2008-10-29 | 2014-12-10 | Zf腓特烈斯哈芬股份公司 | Control element for a parking lock |
US8678160B2 (en) | 2008-10-29 | 2014-03-25 | Zf Friedrichshafen Ag | Control element for a parking lock |
DE102008054465A1 (en) * | 2008-12-10 | 2010-06-17 | Zf Friedrichshafen Ag | Parking lock for automatic transmission of motor vehicle, has bolt forming one of electrically conducting component or magnetic component of eddy current brake, where other component is assigned to housing structure |
DE102008054466A1 (en) * | 2008-12-10 | 2010-06-17 | Zf Friedrichshafen Ag | Parking lock device for motor vehicle drive, has parking lock wheel, pawl, locking element and guide plate, where pawl is engaged in parking lock wheel by inserting parking lock and is locked by locking element |
DE102009035348A1 (en) | 2009-07-30 | 2011-02-03 | Volkswagen Ag | Parking lock device for automatic or automated motor vehicle transmission, has slide valve provided between relief valve and hydraulic cylinder in pressure pipe and servo-controlled by shift valve |
CN102575761A (en) * | 2009-10-19 | 2012-07-11 | 贺德克技术有限公司 | Device for the pulsed release of an amount of fluid which can be stored in an accumulator housing |
WO2011047774A1 (en) * | 2009-10-19 | 2011-04-28 | Hydac Technology Gmbh | Device for the pulsed release of an amount of fluid which can be stored in an accumulator housing |
CN102575761B (en) * | 2009-10-19 | 2015-04-22 | 贺德克技术有限公司 | Device for the pulsed release of an amount of fluid which can be stored in an accumulator housing |
US9046170B2 (en) | 2009-10-19 | 2015-06-02 | Hydac Technology Gmbh | Device for the pulsed release of an amount of fluid which can be stored in an accumulator housing |
EP3076049A3 (en) * | 2015-03-27 | 2016-11-30 | Hamilton Sundstrand Corporation | Rheologic fluid coupler for redundant linear electromechanical actuators |
US10099776B2 (en) | 2015-03-27 | 2018-10-16 | Hamilton Sundstrand Corporation | Rheologic fluid coupler for redundant linear electromechanical actuators |
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OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8139 | Disposal/non-payment of the annual fee |