DE19933618A1 - Parking locking device for automatic transmission, in which locking device has linear free runner to raise retention force acting on locking ball - Google Patents
Parking locking device for automatic transmission, in which locking device has linear free runner to raise retention force acting on locking ballInfo
- Publication number
- DE19933618A1 DE19933618A1 DE1999133618 DE19933618A DE19933618A1 DE 19933618 A1 DE19933618 A1 DE 19933618A1 DE 1999133618 DE1999133618 DE 1999133618 DE 19933618 A DE19933618 A DE 19933618A DE 19933618 A1 DE19933618 A1 DE 19933618A1
- Authority
- DE
- Germany
- Prior art keywords
- locking
- parking lock
- cone
- lock device
- locking cone
- 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.)
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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
- F16H63/3425—Parking lock mechanisms or brakes in the transmission characterised by pawls or wheels
- F16H63/3433—Details of latch mechanisms, e.g. for keeping pawls out of engagement
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- 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)
- Gear-Shifting Mechanisms (AREA)
- Braking Arrangements (AREA)
Abstract
Description
Die Erfindung betrifft eine Parksperrenvorrichtung für ein Automatgetriebe nach der im Oberbegriff des Patentan spruches 1 näher definierten Art.The invention relates to a parking lock device for an automatic transmission according to the preamble of the patent Proverb 1 defined art.
Bei aus dem Stand der Technik bekannten Parksperren vorrichtungen für Automatgetriebe wird über einen von einem Fahrer betätigbaren Wählhebel eine Sperrklinke im Inneren des Automatgetriebes mit einer Verzahnung eines Parksper renrads in Eingriff gebracht, wenn der Wählhebel in eine Stellung "P" verstellt wird. Durch den Eingriff der Sperr klinke wird eine mit dem Parksperrenrad verbundene Ab triebswelle gegen Verdrehen blockiert und das Fahrzeug kann nicht mehr selbständig wegrollen.In parking locks known from the prior art Devices for automatic transmissions will be one by one Driver operated selector lever a pawl inside of the automatic transmission with a toothing of a parking lock renrads engaged when the selector lever in a Position "P" is adjusted. By engaging the lock a pawl connected to the parking lock wheel drive shaft blocked against twisting and the vehicle can no longer roll away independently.
In der deutschen Publikation "ATZ Automobiltechnische Zeitschrift" 96 (1994), Seite 690 ff. ist eine derartige Parksperrenvorrichtung bei einem im Handel erhältlichen Automatgetriebe dargestellt, wobei die Sperrklinke mittels eines Sperrkegels einer Sperreinrichtung von einer Ruhelage in eine Sperrlage bringbar ist. Der Sperrkegel ist bei die sem Automatgetriebe auf einem stangenartigen Verbindungs element gegen eine Feder verschiebbar angeordnet. Das Ver bindungselement wiederum ist über eine Rastenscheibe und eine Wählwelle mit dem Wählhebel verbunden. Bei einer Ver stellung des Wählhebels in die Parkposition "P" wird der Sperrkegel zusammen mit dem Verbindungselement in axialer Richtung des Verbindungselementes in einer Nut einer Füh rungsplatte soweit verschoben, bis der Sperrkegel mit der Sperrklinke in Kontakt kommt. In the German publication "ATZ Automobiltechnische Journal "96 (1994), page 690 ff. Is one such Parking lock device in a commercially available Automatic transmission shown, the pawl by means of a locking cone of a locking device from a rest position can be brought into a locked position. The cone is at the sem automatic transmission on a rod-like connection element slidably arranged against a spring. The Ver The binding element is in turn via a locking washer and a selector shaft connected to the selector lever. In a ver position of the selector lever in the parking position "P" Locking cone together with the connecting element in axial Direction of the connecting element in a groove of a guide until the blocking cone with the Pawl comes into contact.
Dabei wird der Sperrkegel mit zunehmendem axialen Ver stellweg des Sperrkegels bzw. des Verbindungselementes zwi schen die Sperrklinke und einen Endbereich der Führungs platte geschoben. Die dann auf der Kegelfläche gleitende Sperrklinke wird mit weiterer Axialverschiebung des Sperr kegels um eine ortsfeste Drehachse immer weiter in Richtung des Parksperrenrads verschwenkt bis die Sperrklinke in der vorgesehenen Art und Weise in die Verzahnung des Parksper renrads eingreift.The locking cone with increasing axial Ver travel of the locking cone or the connecting element between pawl and an end portion of the guide plate pushed. The one then sliding on the cone surface The pawl will move the lock axially cone around a fixed axis of rotation in the direction of the parking lock wheel pivots until the pawl in the intended way in the teeth of the parking renrades engages.
Die Feder dient insbesondere dazu, eine Axialbewegung des Sperrkegels auf dem Verbindungselement zu ermöglichen, wenn bei Einlegen der Parksperre ein Zahn der Sperrklinke auf einen Zahn des Parksperrenrads trifft und die Sperr klinke somit nicht in die Verzahnung des Parksperrenrads einrasten kann. Der Sperrkegel kann in dieser Situation nicht in seine endgültige Sperrstellung zwischen Führungs platte und Sperrklinke verschoben werden. Sobald aufgrund einer Drehbewegung des Parksperrenrads ein Einrasten der Sperrklinke möglich ist, wird die Feder entlastet und der Sperrkegel gleitet aufgrund der Federkraft in seine endgül tige Sperrlage. Das stangenartige Verbindungselement befin det sich dabei bereits in seiner Endstellung und wird nicht mehr bewegt.The spring is used in particular for an axial movement of the locking cone on the connecting element, if a pawl tooth when inserting the parking lock meets a tooth of the parking lock wheel and the lock do not latch into the teeth of the parking lock wheel can snap into place. The locking cone can in this situation not in its final locked position between leadership plate and pawl can be moved. Once due a rotational movement of the parking lock wheel engages the Pawl is possible, the spring is relieved and the The locking cone slides into its endgül due to the spring force blocked position. The rod-like connecting element is detects itself in its end position and will not moved more.
Der Sperrkegel weist üblicherweise einen kegelstumpf artigen bzw. fasenartigen Endbereich auf, dessen Mantelflä che mit der Symmetrieachse des Sperrkegels einen Winkel in einem Bereich von 45° einschließt. Dieser Endbereich dient dazu, die Sperrklinke mit einem relativ geringen axialen Verstellweg des Sperrkegels aus ihrer Ruhelage heraus zu bewegen. The blocking cone usually has a truncated cone like or chamfer-like end area, the mantle surface with the axis of symmetry of the locking cone includes a range of 45 °. This end area serves to do this, the pawl with a relatively small axial Adjustment path of the locking cone out of its rest position move.
An diesen Endbereich schließt sich ein kegeliger Be reich des Sperrkegels an. In diesem Bereich liegt die Klin ke an, wenn die Parksperre eingerastet ist. Der Winkel, den die Mantelfläche dieses Bereiches mit der Symmetrieachse des Sperrkegels bildet, ist ausreichend klein, um Selbst hemmung zu erreichen. Selbsthemmung ist zwingend erforder lich, um ein sicheres Festsetzen der Parksperre zu gewähr leisten.A conical Be connects to this end area rich in the cone. The Klin ke on when the parking lock is engaged. The angle that the lateral surface of this area with the axis of symmetry of the cone is small enough to self to achieve inhibition. Self-locking is imperative to ensure that the parking lock is securely fixed Afford.
Problematisch ist jedoch bei einer derartigen Park sperrenvorrichtung, daß das Lösen der Parksperrenvorrich tung in bestimmten Betriebszuständen des Automatgetriebes zu einem deutlich wahrnehmbaren Entlastungsstoß führt. Die ser Entlastungsstoß wird durch eine Vorspannung des Ab triebsstrangs verursacht, die beim Lösen der Parksperren vorrichtung schlagartig abgebaut wird. Die Vorspannung des Abtriebsstrangs entsteht z. B. dadurch, daß dieser beim Rückwärtsfahren und gleichzeitigem Bremsen verdreht wird und dadurch vorgespannt wird. Durch die Vorspannung liegt ein starkes Torsionsmoment im Parksperrenrad vor, welches beim Lösen der Parksperrenvorrichtung eine die Sperrklinke aus dem Eingriff mit dem Parksperrenrad drückende Kraft erzeugt.However, the problem with such a park locking device that releasing the parking lock device device in certain operating states of the automatic transmission leads to a clearly perceptible relief shock. The This relief shock is achieved by preloading the Ab drivetrain caused when releasing the parking locks device is suddenly dismantled. The preload of the Powertrain arises z. B. in that this Reversing while braking is turned and is thereby biased. Due to the preload a strong torsional moment in the parking lock wheel, which when releasing the parking lock device the pawl force from the engagement with the parking lock wheel generated.
Bei einer leichten Bewegung der Rastenscheibe zu Be ginn des Lösens der Parksperrenvorrichtung wird das stan genartige Verbindungselement gemeinsam mit dem Sperrkegel in Richtung der Rastenscheibe bewegt. Der Sperrkegel glei tet dabei unter ständigem Kontakt mit der Sperrklinke unter dieser in Richtung der Rastenscheibe weg, während die Sperrklinke durch den Bereich der Selbsthemmung des Sperr kegels behutsam aus dem Eingriff mit dem Parksperrenrad verschwenkt wird. With a slight movement of the locking disk to Be The start of releasing the parking lock device becomes the stan Genetic connecting element together with the locking cone moved in the direction of the locking disk. The blocking cone is the same under constant contact with the pawl this away in the direction of the locking disk, while the Pawl through the area of self-locking of the lock gently out of engagement with the parking lock wheel is pivoted.
Die aufgrund der in der Abtriebswelle vorhandenen Vor spannung auf die Sperrklinke wirkende Kraft und deren Axialkomponente ist wegen der schwachen Neigung im Bereich der Selbsthemmung gering, so daß eine Relativbewegung zwi schen dem Sperrkegel und dem Verbindungselement kaum statt findet. Hierzu trägt auch die Vorspannung der Feder bei, welche bewirkt, daß der Sperrkegel auf dem Verbindungsele ment nicht bzw. nur geringfügig verschoben wird. Wenn die auf dem Sperrkegel gleitende Sperrklinke dessen Endbereich mit der 45°-Schräge, erreicht, vergrößert sich die auf den Sperrkegel einwirkende Kraft um ein vielfaches und ist dann größer als die Federkraft. Der Sperrkegel wird relativ zur Verbindungsstange in Richtung Rastenscheibe verschoben und die Sperrklinke im Bereich der 45°-Schräge schlagartig aus der Eingriffsverzahnung des Parksperrenrades herausgefah ren. Damit tritt der Entlastungsstoß auf, welcher als stö rend empfunden wird.The due to the existing in the output shaft tension acting on the pawl and its Axial component is in the area because of the weak incline the self-locking low, so that a relative movement between the blocking cone and the connecting element hardly take place finds. The preload of the spring also contributes to this, which causes the locking cone on the connecting element ment is not or only slightly shifted. If the pawl sliding on the locking cone, its end region reached with the 45 ° slope, increases to the Blocking cone acting force many times and is then greater than the spring force. The cone becomes relative to Connecting rod moved towards the locking disk and the pawl in the area of the 45 ° slope suddenly the meshing teeth of the parking lock wheel came out ren. Thus, the discharge shock occurs, which as disturb is felt.
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine Parksperrenvorrichtung zur Verfügung zu stellen, mit tels der ein unerwünschter Entlastungsstoß vermieden werden kann.The present invention is based on the object to provide a parking lock device with means an undesirable discharge shock can be avoided can.
Erfindungsgemäß wird diese Aufgabe mit einer Parksper renvorrichtung gemäß den Merkmalen des Patentanspruches 1 gelöst.According to the invention, this task is accomplished with a parking lock Ren device according to the features of claim 1 solved.
Dadurch, daß die erfindungsgemäße Parksperrenvorrich tung mit einem Linearfreilauf versehen ist, wird in vor teilhafter Weise die Rückhaltekraft an dem Sperrkegel der art erhöht, daß bei einem Auslegen der Parksperrenvorrich tung eine Vorspannung in dem Abtriebsstrang langsam abge baut wird. Damit wird ein merkbarer Entlastungsstoß vermie den und ein gewünschter Schaltkomfort gewährleistet.In that the parking lock device according to the invention device is provided with a linear freewheel, is in front the restraining force on the locking cone of the Art increases that when laying out the parking lock device tion a prestress in the drive train slowly released is built. This prevents a noticeable surge of relief and ensures a desired shift comfort.
Darüber hinaus ist von Vorteil, daß durch die auf den Sperrkegel wirkende Rückhaltekraft des Linearfreilaufs die Kräfte, welche zum Einlegen der Parksperrenvorrichtung von einem Fahrer eines Kraftfahrzeuges aufgebracht werden müs sen, nicht erhöht werden.In addition, it is advantageous that by the on Locking cone acting retention force of the linear freewheel Forces required to insert the parking lock device from must be applied to a driver of a motor vehicle sen, not be increased.
Weiter ist von Vorteil, daß die erfindungsgemäße Park sperrenvorrichtung einen einfachen Aufbau aufweist und ko stengünstig herstellbar ist.Another advantage is that the park according to the invention locking device has a simple structure and ko is inexpensive to manufacture.
Ein vorteilhafter langsamer Abbau der Vorspannung in dem Abtriebsstrang beim Auslegen der Parksperrenvorrichtung ist auch bereits dann möglich, wenn der Sperrkegel der er findungsgemäßen Parksperrenvorrichtung einen wenigstens annähernd kegelstumpfartig ausgebildeten Endbereich auf weist, dessen Mantelfläche mit einer Symmetrieachse des Sperrkegels einen spitzen Winkel β einschließt, der vor zugsweise wenigstens annähernd 20° beträgt. Durch die 20°- Neigung ist die aufgrund der Vorspannung des Abtriebs strangs auf den Sperrkegel wirkende Kraft und ihre Axial komponente derart klein, daß ein schlagartiger Abbau der Vorspannung vermieden wird.An advantageous slow release of the preload in the drive train when laying out the parking lock device is also possible if the cone of the he at least parking lock device according to the invention approximately frustoconical end region points, the lateral surface with an axis of symmetry of Locking cone includes an acute angle β that before is preferably at least approximately 20 °. Through the 20 ° - Inclination is due to the preload of the output force acting on the locking cone and its axial component so small that a sudden degradation of the Pre-tension is avoided.
Weitere Vorteile und Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen und aus dem nachfol gend anhand der Zeichnung prinzipmäßig beschriebenen Aus führungsbeispiel. Further advantages and developments of the invention result from the subclaims and from the successor From the principle described with reference to the drawing leadership example.
Es zeigen:Show it:
Fig. 1 eine schematische Darstellung einer Park sperrenvorrichtung mit einer Sperrklinke in Vorderansicht, welche in Eingriff mit einer Verzahnung eines Parksperrenrads steht; Figure 1 is a schematic representation of a parking lock device with a pawl in front view, which is in engagement with a toothing of a parking lock wheel.
Fig. 2 die Parksperrenvorrichtung nach Fig. 1 in einer Seitenansicht und Fig. 2 shows the parking lock device according to Fig. 1 in a side view
Fig. 3 einen Ausschnitt der Parksperrenvorrichtung nach Fig. 1 und Fig. 2 mit einem Sperrkegel einer Sperreinrichtung in einer vergrößerten Darstellung. Fig. 3 shows a detail of the parking lock device according to Fig. 1 and Fig. 2 with a locking cone of a locking device in an enlarged view.
Die Fig. 1 und 2 zeigen eine Parksperrenvorrichtung 1 für ein Automatgetriebe eines Kraftfahrzeuges in einer Vor deransicht und einer Seitensicht. Die Parksperrenvorrich tung 1 weist ein mit einer Abtriebswelle verbundenes Park sperrenrad 2 auf, welches mit einer Verzahnung 3 versehen ist. Bei eingelegter Parksperrenvorrichtung 1 ist in die Verzahnung 3 eine Sperrklinke 4 eingerastet, wobei sich die Sperrklinke 4 in den Figuren in ihrer Sperrlage befindet. Die Sperrklinke 4 ist auf einer einen Sperrkegel 5 aufwei senden Sperreinrichtung 6 geführt und um eine Drehachse 7 aus einer Ruhelage in ihre Sperrstellung drehbar. Der Sperrkegel 5 ist auf einem stangenartigen Verbindungsele ment 8 gegen eine Federkraft einer Federeinrichtung 9 ver schiebbar angeordnet. Figs. 1 and 2 show a parking brake apparatus 1 for an automatic transmission of a motor vehicle in a pre deransicht and a side view. The parking lock device 1 has a parking lock wheel 2 connected to an output shaft, which is provided with a toothing 3 . When the parking lock device 1 is inserted, a pawl 4 is engaged in the toothing 3 , the pawl 4 being in its locked position in the figures. The pawl 4 is on a locking cone 5 aufwei send locking device 6 and rotatable about an axis of rotation 7 from a rest position to its locked position. The locking cone 5 is arranged on a rod-like connecting element 8 slidably against a spring force of a spring device 9 .
Die Federeinrichtung 9 stellt eine herkömmliche Feder dar, welche bereits bei bekannten Parksperrenvorrichtungen verwendet wird, um ein Einlegen der Parksperrenvorrich tung 1 auch dann zu gewährleisten, wenn die Sperrklinke 4 in Sperrlage zunächst auf einem Zahn der Verzahnung 3 auf liegen sollte.The spring device 9 is a conventional spring, which is already used in known parking lock devices to ensure insertion of the parking lock device 1 even when the pawl 4 should initially rest on a tooth of the toothing 3 in the locked position.
Beim Einlegen der Parksperrenvorrichtung 1 wird ein Wählhebel, welcher über eine Wählwelle 10 und eine damit drehfest in Verbindung stehende Rastenscheibe 11 mit dem Verbindungselement 8 verbunden ist, von einem Fahrer eines Kraftfahrzeugs in eine Stellung "P" verstellt. Die Verstel lung des Wählhebels in Stellung "P" bewirkt eine axiale Verschiebung des Verbindungselementes 8. Dabei wird der Sperrkegel 5 zusammen mit dem Verbindungselement 8 unter die Sperrklinke 4 geschoben.When the parking lock device 1 is inserted, a selector lever, which is connected to the connecting element 8 via a selector shaft 10 and a detent disk 11 connected to it in a rotationally fixed manner, is adjusted to a position "P" by a driver of a motor vehicle. The adjustment of the selector lever in position "P" causes an axial displacement of the connecting element 8 . The locking cone 5 is pushed together with the connecting element 8 under the pawl 4 .
Insbesondere in Fig. 3 ist ersichtlich, daß der Sperr kegel 5 einen zylindrischen Endbereich 12, einen kegeligen Selbsthemmungsbereich 13 und einen kegelstumpfartigen End bereich 14 aufweist, wobei der kegelstumpfartige Endbe reich 14 in Einbaulage des Sperrkegels 5 der Sperrklinke 4 zugewandt ist. Der kegelige Selbsthemmungsbereich 13 und der kegelstumpfartige Endbereich 14 weisen gegenüber einer Symmetrieachse 20 des Sperrkegels 5 bzw. einer Mantelflä che 21 des zylindrischen Endbereichs 12 eine Neigung mit einem Winkel α von 3° bzw. mit einem Winkel β von 20° auf.In particular, in Fig. 3 it can be seen that the locking cone 5 has a cylindrical end portion 12, a conical self-locking portion 13 and a frustoconical end portion 14, wherein the frustoconical Endbe is rich face 14 in the installation position of the locking cone 5, the pawl 4. The conical self-locking region 13 and the frustoconical end region 14 have an inclination with an angle α of 3 ° or with an angle β of 20 ° with respect to an axis of symmetry 20 of the locking cone 5 or a Mantelflä surface 21 of the cylindrical end region 12 .
Der Durchmesser des Sperrkegels 5 nimmt somit von sei nem der Sperrklinke 4 zugewandten Ende bis hin zu seinem der Sperrklinke 4 abgewandten Ende zumindest abschnittswei se stetig zu. Beim Einlegen der Parksperrenvorrichtung 1 wird die Sperrklinke 4 entsprechend dem Durchmesserzuwachs des Sperrkegels 5 mit zunehmendem Verstellweg des Sperrke gels 5 verdreht bzw. verschwenkt, wobei die Sperrklinke 4 zunächst über den kegelstumpfartigen Endbereich 14 des Sperrkegels 5 geführt wird, bis sie auf dem Selbsthemmungs bereich 13 in Sperrlage von dem Sperrkegel 5 gehalten wird.The diameter of the locking cone 5 thus increases from its end facing the locking pawl 4 to its end facing away from the locking pawl 4 at least in sections. When inserting the parking lock device 1 , the pawl 4 is rotated or pivoted in accordance with the diameter increase of the locking cone 5 with increasing displacement of the locking key 5 , the locking pawl 4 initially being guided over the frustoconical end region 14 of the locking cone 5 until it is on the self-locking area 13 is held in the locked position by the locking cone 5 .
Beim Lösen der Parksperrenvorrichtung 1 wird der Wähl hebel aus der Stellung "P" verstellt und der Sperrkegel 5 wird zusammen mit dem Verbindungselement 8 unter der Sperr klinke 4 hinweg in Richtung der Rastenscheibe 11 verscho ben.When releasing the parking lock device 1 , the selector lever is moved from the "P" position and the locking cone 5 is moved together with the connecting element 8 under the locking pawl 4 in the direction of the locking disk 11 ben.
Bei vorgespannter Abtriebswelle wirkt eine in bekann ter Weise auftretende Kraft mit einer Axialkomponente auf den Sperrkegel 5, welche diesen in Richtung der Rasten scheibe 11 auf dem Verbindungselement 8 drückt. Dieser Kraft wirkt die Federkraft der Federeinrichtung 9 aufgrund ihrer Vorspannung entgegen.When the output shaft is preloaded, a force that occurs in a known manner acts with an axial component on the locking cone 5 , which disc presses it in the direction of the detent 11 on the connecting element 8 . This force is counteracted by the spring force of the spring device 9 due to its pretension.
Beim Gleiten der Sperrklinke 4 auf dem Sperrkegel 5 erhöht sich am Übergang von dem Selbsthemmungsbereich 13 zu dem kegelstumpfartigen Endbereich 14 die auf den Sperrke gel 5 wirkende Kraft aufgrund der stärken Neigung des letztgenannten Abschnittes des Sperrkegels 5.When sliding of the pawl 4 in the locking cone 5, the force acting on the Sperrke gel 5 increases at the transition from the self-locking portion 13 to the frusto-conical end portion 14 due to the increase slope of the last-mentioned portion of the locking cone. 5
Um ein ungewolltes Verschieben des Sperrkegels 5 auf dem Verbindungselement 8 und damit einen zu schnellen Abbau der Vorspannung der Abtriebswelle zu vermeiden, muß eine an dem Sperrkegel 5 angreifende Rückhaltekraft groß genug sein, um diesem entgegenwirken zu können. Dazu weist die Sperreinrichtung 6 einen Linearfreilauf 15 zur Erhöhung der Rückhaltekraft auf.In order to avoid an unwanted displacement of the locking cone 5 on the connecting element 8 and thus a rapid reduction in the pretensioning of the output shaft, a retaining force acting on the locking cone 5 must be large enough to be able to counteract this. For this purpose, the locking device 6 has a linear freewheel 15 to increase the retention force.
Der Linearfreilauf 15 ist, wie in Fig. 3 dargestellt, aus einem an dem Sperrkegel 5 vorgesehenen Zahnprofil 16 und einem in dieses eingreifenden Rückhalteelement 17 ge bildet, wobei das Zahnprofil 16 im zylindrischen Endbe reich 12 des Sperrkegels 5 vorgesehen ist. Das Rückhaltee lement ist in der gezeigten Ausführung als ein biegsamer Federstahl 17 ausgebildet, der an seinem in das Zahnpro fil 16 eingreifenden Ende eine Abschrägung 18 aufweist, um beim Einlegen der Parksperrenvorrichtung 1 leicht über das Zahnprofil 16 hinweg führbar zu sein und beim Auslegen der Parksperrenvorrichtung 1 seine Sperrwirkung voll entfalten zu können. Der Federstahl 17 ist mit seinem der Abschrä gung 18 abgewandten Ende fest mit einem plattenförmigen Führungsglied 19 des Sperrkegels 5 verbunden, das fest mit einem Getriebegehäuse verschraubt ist.The linear freewheel 15 , as shown in Fig. 3, from a provided on the locking cone 5 tooth profile 16 and engaging in this retaining element 17 ge forms, the tooth profile 16 in the cylindrical Endbe rich 12 of the locking cone 5 is provided. Return Haltee is lement formed as a flexible spring steel 17 in the embodiment shown, has a chamfer 18 at its engaging in the Zahnpro fil 16 end to be when loading of the parking lock device 1 slightly above the tooth profile 16 away feasible and in designing the parking lock device 1 to be able to fully develop its blocking effect. The spring steel 17 is fixedly connected to the end facing away from the bevel 18 with a plate-shaped guide member 19 of the locking cone 5 , which is firmly screwed to a gear housing.
Die Federsteifigkeit des Federstahls 17 wird in Abhän gigkeit einer Federrate der Federeinrichtung 9 derart ge wählt, daß die an dem Sperrkegel 5 angreifende Rückhalte kraft einem Entlastungsstoß beim Auslegen bzw. Lösen der Parksperrenvorrichtung 1 entgegenwirkt.The spring stiffness of the spring steel 17 is in Ge depend on a spring rate of the spring device 9 so selected that the attacking on the locking cone 5 counteracts force counteracts a relief shock when laying out or releasing the parking lock device 1 .
Es liegt jedoch selbstverständlich im Ermessen des Fachmannes, einem Entlastungsstoß durch eine entsprechende Erhöhung der Vorspannung oder eine Erhöhung der Federrate der Federeinrichtung 9 entgegenzuwirken, wobei dann auf den Linearfreilauf 15 verzichtet werden kann, da die an dem Sperrkegel 5 angreifenden Kräfte durch die 20° Neigung des kegelstumpfartigen Endbereichs 14 des Sperrkegels 5 erheb lich reduziert sind. However, it is of course at the discretion of the person skilled in the art to counteract a relief shock by a corresponding increase in the pretension or an increase in the spring rate of the spring device 9 , in which case the linear freewheel 15 can then be dispensed with, since the forces acting on the locking cone 5 are caused by the 20 ° inclination of the frustoconical end portion 14 of the locking cone 5 are significantly reduced Lich.
11
Parksperrenvorrichtung
Parking lock device
22nd
Parksperrenrad
Parking lock wheel
33rd
Verzahnung
Gearing
44th
Sperrklinke
Pawl
55
Sperrkegel
Blocking cone
66
Sperreinrichtung
Locking device
77
Drehachse
Axis of rotation
88th
Verbindungselement
Fastener
99
Federeinrichtung, Feder
Spring device, spring
1010th
Wählwelle
Selector shaft
1111
Rastenscheibe
Grid disc
1212th
zylindrischer Endbereich
cylindrical end region
1313
Selbsthemmungsbereich
Self-locking area
1414
kegelstumpfartiger Endbereich
frustoconical end area
1515
Linearfreilauf
Linear freewheel
1616
Zahnprofil
Tooth profile
1717th
Rückhalteelement
Retention element
1818th
Abschrägung
bevel
1919th
plattenförmiges Führungsglied
plate-shaped guide link
2020th
Symmetrieachse des Sperrkegels
Axis of symmetry of the locking cone
2121
Mantelfläche des zylindrischen Endbereichs
Lateral surface of the cylindrical end region
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1999133618 DE19933618A1 (en) | 1999-07-17 | 1999-07-17 | Parking locking device for automatic transmission, in which locking device has linear free runner to raise retention force acting on locking ball |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1999133618 DE19933618A1 (en) | 1999-07-17 | 1999-07-17 | Parking locking device for automatic transmission, in which locking device has linear free runner to raise retention force acting on locking ball |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE19933618A1 true DE19933618A1 (en) | 2001-01-18 |
Family
ID=7915165
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE1999133618 Withdrawn DE19933618A1 (en) | 1999-07-17 | 1999-07-17 | Parking locking device for automatic transmission, in which locking device has linear free runner to raise retention force acting on locking ball |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE19933618A1 (en) |
Cited By (33)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10245951A1 (en) * | 2002-10-02 | 2004-04-29 | Zf Friedrichshafen Ag | Parking position lock for automatic transmission of motor vehicle has parts connected to gearbox, namely locking pawl, pivot pin for locking pawl and/or guide plate, acoustically decoupled by interposing of springs or damping devices |
| WO2006058571A1 (en) | 2004-12-02 | 2006-06-08 | Zf Friedrichschafen Ag | Parking lock for a motor vehicle |
| DE102005046610A1 (en) * | 2005-09-29 | 2007-04-05 | Zf Friedrichshafen Ag | Parking lock for automatic transmission at motor vehicle, has parking disk rotatably supported at transmission housing, where locking of rotation movement of disk is realized by suspension points that are arranged at housing |
| WO2008012168A2 (en) | 2006-07-22 | 2008-01-31 | Zf Friedrichshafen Ag | Parking lock for a transmission |
| DE102007026412A1 (en) | 2007-06-06 | 2008-12-11 | Zf Friedrichshafen Ag | Parking lock mechanism for automatic transmission motor vehicle, has locking element arranged on connecting rod for locking disc |
| DE102008000177A1 (en) | 2008-01-30 | 2009-08-06 | Zf Friedrichshafen Ag | Device for damping torsional vibrations in vehicle, has pivotally supported pawl with catch tooth engaged in tooth of parking lock wheel, where parking lock wheel is connected and arranged with axially working damping device |
| DE102008000280A1 (en) | 2008-02-12 | 2009-08-13 | Zf Friedrichshafen Ag | parking brake |
| DE102008000251A1 (en) | 2008-02-07 | 2009-08-13 | Zf Friedrichshafen Ag | Parking lock device for automatic transmission of motor vehicle, has latch which is mounted over parking lock bolt in gearbox in tilted manner, where latch and parking lock bolt are designed as separate sections |
| DE102008054467A1 (en) | 2008-12-10 | 2010-06-17 | Zf Friedrichshafen Ag | Parking lock device for automatic transmission of motor vehicle, has pawl positively secured during detachment of parking lock and detached from parking lock wheel during disengaging of parking lock |
| DE102008054469A1 (en) | 2008-12-10 | 2010-06-17 | Zf Friedrichshafen Ag | Parking lock device for motor vehicle transmission, has bolt blockingly intervened in parking lock wheel during insertion of parking lock, where bolt is form-fittingly securable during mounting of parking lock |
| DE102008054470A1 (en) | 2008-12-10 | 2010-06-17 | Zf Friedrichshafen Ag | Parking lock device for motor vehicle drive, has parking lock wheel, pawl, locking element with actuating rod, and guide plate, where pawl is engaged in parking lock wheel during insertion of parking lock and is locked by locking element |
| 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 |
| US7757832B2 (en) | 2004-12-02 | 2010-07-20 | Zf Friedrichshafen Ag | Parking lock for a motor vehicle |
| DE102009027089A1 (en) | 2009-06-23 | 2010-12-30 | Zf Friedrichshafen Ag | Parking lock for motor vehicle, particularly tractor, has hydraulically actuated lamella switching element, which is hydraulically actuated by piston slidably arranged in piston chamber in opening direction against force of spring element |
| DE102009045630A1 (en) | 2009-10-13 | 2011-04-14 | Zf Friedrichshafen Ag | Parking lock for motor vehicle, comprises hydraulically operated shifting element and thread bar which is operatively connected with unlocking holder that is connected with piston |
| DE102009047731A1 (en) | 2009-12-09 | 2011-06-16 | Zf Friedrichshafen Ag | Parking lock for motor vehicle i.e. tractor, has switching element guided by housing of drive, where rotation in direction of drive results into axial displacement of piston in opening direction of element such that lock is unlocked |
| DE102010000723A1 (en) | 2010-01-07 | 2011-07-14 | ZF Friedrichshafen AG, 88046 | Parking brake device for a motor vehicle transmission |
| DE102010000774A1 (en) | 2010-01-11 | 2011-07-14 | ZF Friedrichshafen AG, 88046 | Parking brake device for a motor vehicle transmission |
| DE102010002887A1 (en) | 2010-03-16 | 2011-09-22 | Zf Friedrichshafen Ag | Parking lock for motor vehicle with stepless transmission, particularly for tractor, has screw that is operated manually and is operatively connected with piston |
| DE102010028281A1 (en) | 2010-04-28 | 2011-11-03 | Zf Friedrichshafen Ag | Parking lock device for motor car-machine gear box, has balance spring supported on counter bearing, where spring path of spring and path of lock pawl are limited by sleeve that is supported on bearing and arranged on connection rod |
| DE102010043260A1 (en) | 2010-05-12 | 2011-11-17 | Zf Friedrichshafen Ag | Parking brake device for an automatic transmission of a motor vehicle |
| DE102011082169A1 (en) | 2011-09-06 | 2013-03-07 | Zf Friedrichshafen Ag | Parking lock device of a motor vehicle transmission |
| WO2013053577A1 (en) * | 2011-10-13 | 2013-04-18 | Zf Friedrichshafen Ag | Transmission parking lock |
| DE102012221032A1 (en) | 2012-11-19 | 2014-05-22 | Zf Friedrichshafen Ag | Parking lock device for automatic transmission of motor vehicle, has teeth that are formed with tooth gaps such that each tooth is provided with convex curved tooth flanks that are matched with concave tooth flanks of tooth ratchet |
| DE102011086237B4 (en) * | 2010-12-08 | 2014-06-05 | Schaeffler Technologies Gmbh & Co. Kg | parking lock |
| CN104110479A (en) * | 2013-04-16 | 2014-10-22 | 本田技研工业株式会社 | Transmission and transmission assembling method |
| WO2017042073A1 (en) * | 2015-09-07 | 2017-03-16 | Volkswagen Aktiengesellschaft | Parking brake device for a motor vehicle transmission |
| DE102005010211B4 (en) * | 2005-03-05 | 2017-06-22 | Zf Friedrichshafen Ag | A parking brake mechanism for a motor vehicle comprising an automatic transmission or an automated manual transmission |
| DE102016124391A1 (en) | 2016-12-14 | 2018-06-14 | Hugo Benzing Gmbh & Co. Kg | Deflection mechanism for a parking lock |
| DE102017217829A1 (en) | 2017-10-06 | 2019-04-11 | Zf Friedrichshafen Ag | Electric final drive of a vehicle with parking brake device |
| DE102018129314A1 (en) | 2018-11-21 | 2019-10-24 | Schaeffler Technologies AG & Co. KG | Parking lock for a transmission |
| DE102019101467A1 (en) * | 2018-11-21 | 2019-10-24 | Schaeffler Technologies AG & Co. KG | Parking brake device for a transmission with a parking lock gear |
| DE102005001838B4 (en) | 2005-01-14 | 2022-04-28 | Zf Friedrichshafen Ag | Method for improving comfort when disengaging the parking lock of a motor vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE19744238A1 (en) * | 1996-10-15 | 1998-04-23 | Ford Global Tech Inc | Parking lock mechanism for automatic transmission |
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1999
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19744238A1 (en) * | 1996-10-15 | 1998-04-23 | Ford Global Tech Inc | Parking lock mechanism for automatic transmission |
Non-Patent Citations (1)
| Title |
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| JP 10166880 A.,In: Patent Abstracts of Japan * |
Cited By (52)
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| DE10245951A1 (en) * | 2002-10-02 | 2004-04-29 | Zf Friedrichshafen Ag | Parking position lock for automatic transmission of motor vehicle has parts connected to gearbox, namely locking pawl, pivot pin for locking pawl and/or guide plate, acoustically decoupled by interposing of springs or damping devices |
| US7757832B2 (en) | 2004-12-02 | 2010-07-20 | Zf Friedrichshafen Ag | Parking lock for a motor vehicle |
| WO2006058571A1 (en) | 2004-12-02 | 2006-06-08 | Zf Friedrichschafen Ag | Parking lock for a motor vehicle |
| DE102005001838B4 (en) | 2005-01-14 | 2022-04-28 | Zf Friedrichshafen Ag | Method for improving comfort when disengaging the parking lock of a motor vehicle |
| DE102005010211B4 (en) * | 2005-03-05 | 2017-06-22 | Zf Friedrichshafen Ag | A parking brake mechanism for a motor vehicle comprising an automatic transmission or an automated manual transmission |
| DE102005046610A1 (en) * | 2005-09-29 | 2007-04-05 | Zf Friedrichshafen Ag | Parking lock for automatic transmission at motor vehicle, has parking disk rotatably supported at transmission housing, where locking of rotation movement of disk is realized by suspension points that are arranged at housing |
| WO2008012168A2 (en) | 2006-07-22 | 2008-01-31 | Zf Friedrichshafen Ag | Parking lock for a transmission |
| US8225921B2 (en) | 2006-07-22 | 2012-07-24 | Zf Friedrichshafen Ag | Parking lock for a transmission |
| DE102006033985B4 (en) | 2006-07-22 | 2024-03-14 | Zf Friedrichshafen Ag | Parking lock for a transmission |
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| DE102008000177A1 (en) | 2008-01-30 | 2009-08-06 | Zf Friedrichshafen Ag | Device for damping torsional vibrations in vehicle, has pivotally supported pawl with catch tooth engaged in tooth of parking lock wheel, where parking lock wheel is connected and arranged with axially working damping device |
| DE102008000251A1 (en) | 2008-02-07 | 2009-08-13 | Zf Friedrichshafen Ag | Parking lock device for automatic transmission of motor vehicle, has latch which is mounted over parking lock bolt in gearbox in tilted manner, where latch and parking lock bolt are designed as separate sections |
| DE102008000280A1 (en) | 2008-02-12 | 2009-08-13 | Zf Friedrichshafen Ag | parking brake |
| EP2090485A1 (en) | 2008-02-12 | 2009-08-19 | ZF Friedrichshafen AG | Parking brake |
| DE102008054469A1 (en) | 2008-12-10 | 2010-06-17 | Zf Friedrichshafen Ag | Parking lock device for motor vehicle transmission, has bolt blockingly intervened in parking lock wheel during insertion of parking lock, where bolt is form-fittingly securable during mounting of parking lock |
| DE102008054470A1 (en) | 2008-12-10 | 2010-06-17 | Zf Friedrichshafen Ag | Parking lock device for motor vehicle drive, has parking lock wheel, pawl, locking element with actuating rod, and guide plate, where pawl is engaged in parking lock wheel during insertion of parking lock and is locked by locking element |
| 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 |
| DE102008054467B4 (en) * | 2008-12-10 | 2017-05-18 | Zf Friedrichshafen Ag | Parking brake device for a motor vehicle transmission |
| DE102008054467A1 (en) | 2008-12-10 | 2010-06-17 | Zf Friedrichshafen Ag | Parking lock device for automatic transmission of motor vehicle, has pawl positively secured during detachment of parking lock and detached from parking lock wheel during disengaging of parking lock |
| DE102009027089A1 (en) | 2009-06-23 | 2010-12-30 | Zf Friedrichshafen Ag | Parking lock for motor vehicle, particularly tractor, has hydraulically actuated lamella switching element, which is hydraulically actuated by piston slidably arranged in piston chamber in opening direction against force of spring element |
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| DE102009047731A1 (en) | 2009-12-09 | 2011-06-16 | Zf Friedrichshafen Ag | Parking lock for motor vehicle i.e. tractor, has switching element guided by housing of drive, where rotation in direction of drive results into axial displacement of piston in opening direction of element such that lock is unlocked |
| DE102010000723A1 (en) | 2010-01-07 | 2011-07-14 | ZF Friedrichshafen AG, 88046 | Parking brake device for a motor vehicle transmission |
| US8573378B2 (en) | 2010-01-11 | 2013-11-05 | Zf Friedrichshafen Ag | Parking lock device for motor vehicle |
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| US8579098B2 (en) | 2010-05-12 | 2013-11-12 | Zf Friedrichshafen Ag | Parking lock device for an automatic transmission of a motor vehicle |
| DE102010043260B4 (en) * | 2010-05-12 | 2021-07-01 | Zf Friedrichshafen Ag | Parking lock device for an automatic transmission of a motor vehicle |
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| WO2013053577A1 (en) * | 2011-10-13 | 2013-04-18 | Zf Friedrichshafen Ag | Transmission parking lock |
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| US9327690B2 (en) | 2013-04-16 | 2016-05-03 | Honda Motor Co., Ltd. | Transmission |
| CN104110479A (en) * | 2013-04-16 | 2014-10-22 | 本田技研工业株式会社 | Transmission and transmission assembling method |
| CN108027062B (en) * | 2015-09-07 | 2019-10-18 | 大众汽车有限公司 | Parking stop device for vehicle transmissions |
| CN108027062A (en) * | 2015-09-07 | 2018-05-11 | 大众汽车有限公司 | Parking stop device for vehicle transmissions |
| WO2017042073A1 (en) * | 2015-09-07 | 2017-03-16 | Volkswagen Aktiengesellschaft | Parking brake device for a motor vehicle transmission |
| DE102016124391B4 (en) | 2016-12-14 | 2018-09-13 | Hugo Benzing Gmbh & Co. Kg | Deflection mechanism for a parking brake and method for producing such |
| DE102016124391A1 (en) | 2016-12-14 | 2018-06-14 | Hugo Benzing Gmbh & Co. Kg | Deflection mechanism for a parking lock |
| DE102017217829A1 (en) | 2017-10-06 | 2019-04-11 | Zf Friedrichshafen Ag | Electric final drive of a vehicle with parking brake device |
| DE102017217829B4 (en) * | 2017-10-06 | 2020-03-19 | Zf Friedrichshafen Ag | Electric axle drive of a vehicle with a parking lock device |
| DE102018131845A1 (en) * | 2018-11-21 | 2019-10-24 | Schaeffler Technologies AG & Co. KG | Parking lock device with support means on the connecting element |
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| US11614167B2 (en) | 2018-11-21 | 2023-03-28 | Schaeffler Technologies AG & Co. KG | Parking lock and method for the assembly thereof |
| DE102019101467A1 (en) * | 2018-11-21 | 2019-10-24 | Schaeffler Technologies AG & Co. KG | Parking brake device for a transmission with a parking lock gear |
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| 8139 | Disposal/non-payment of the annual fee |