WO2017129174A1 - Parking lock arrangement for a transmission of a motor vehicle - Google Patents

Parking lock arrangement for a transmission of a motor vehicle Download PDF

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Publication number
WO2017129174A1
WO2017129174A1 PCT/DE2017/100043 DE2017100043W WO2017129174A1 WO 2017129174 A1 WO2017129174 A1 WO 2017129174A1 DE 2017100043 W DE2017100043 W DE 2017100043W WO 2017129174 A1 WO2017129174 A1 WO 2017129174A1
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WO
WIPO (PCT)
Prior art keywords
locking lever
parking brake
actuating arm
locking
parking lock
Prior art date
Application number
PCT/DE2017/100043
Other languages
German (de)
French (fr)
Inventor
Harald Martini
Inaki Fernandez
Original Assignee
Schaeffler Technologies AG & Co. KG
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 Schaeffler Technologies AG & Co. KG filed Critical Schaeffler Technologies AG & Co. KG
Publication of WO2017129174A1 publication Critical patent/WO2017129174A1/en

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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
    • 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
    • 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
    • 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
    • F16H63/3458—Parking lock mechanisms or brakes in the transmission with electric actuating means, e.g. shift by wire
    • F16H63/3466—Parking lock mechanisms or brakes in the transmission with electric actuating means, e.g. shift by wire using electric motors

Definitions

  • the invention relates to a parking lock arrangement for a transmission of a motor vehicle. Furthermore, the invention relates to a transmission of a motor vehicle, comprising the aforementioned parking lock arrangement.
  • Motor vehicles with automatic transmissions usually have a parking brake arrangement which prevents unintentional rolling of the parked motor vehicle.
  • the parking brake assembly typically blocks a shaft of a transmission of the motor vehicle, such as the automatic transmission itself or a downstream differential gear.
  • the shaft to be blocked is chosen such that its blocking reliably prevents movement of the drive wheels of the motor vehicle.
  • the transmission structure may be, for example, the transmission output shaft or a central transmission shaft.
  • DE 101 31 735 A1 discloses a parking brake for a vehicle transmission, in which a parking lock gear is rotatably mounted on a differential gear housing and in which a pivotable about an axis locking lever by means of an actuator in tooth gaps of the parking lock gear is switched on and laid out.
  • the parking lock gear is rotatably arranged next to a ring land of the differential gear housing on this.
  • On the side facing away from the parking lock gear side of the annular web a drive gear is arranged and fixedly connected to the annular web.
  • DE 10 2008 000 177 A1 describes a device for vibration damping of a parking brake with a pivotable pawl which engages in a parking lock gear.
  • DE 10 2006 030 998 A1 describes an actuating element for a parking brake with a pivotable pawl.
  • DE 10 2014 1 17 731 A1 describes a locking assembly with a rotatable pawl for locking an external gear and a selectively actuated actuator and a biasing mechanism.
  • the object of the present invention is to further develop a parking lock arrangement in such a way that the parking lock arrangement has increased strength and at the same time more compact design.
  • the parking brake assembly according to the invention for a transmission of a motor vehicle comprises a rotatably connected to a transmission shaft parking lock gear, a first and second pivotally mounted in a transmission housing locking lever with a respective pawl, wherein the respective pawl is provided when inserting a parking brake in a respective tooth gap on the parking lock gear intervening to block the parking lock gear, the first lock lever being operable by an actuator, and the second lock lever being operable by the first lock lever.
  • each of the two locking levers is pivotally mounted via a respective bearing element in the transmission housing and provided for initiating the parking brake.
  • the arrangement of two locking levers to realize the parking lock increases the strength of the Parksperrenano- tion, because the force acting on the respective locking lever force is distributed evenly on both locking lever. Further, only the first lock lever is operated by the actuator to engage the parking brake. The second locking lever is actuated via the first locking lever and thus does not require a separate actuating device. This results in the advantage of a compact design of the parking brake arrangement.
  • the actuating device has an axially actuable actuating arm, which comes to rest on the first locking lever and radially actuates the first locking lever.
  • the actuating arm is mounted axially displaceably on the actuating device.
  • the first locking lever has a ramp which is intended to cooperate with the operating arm in terms of guidance, in order to move the first locking lever radially in the direction of the parking lock gear.
  • the first locking lever is connected via a pin connection with the second locking lever, wherein the pin connection comprises a pin member which connects the first and the second locking lever at least in the radial direction.
  • the pin element is arranged in a hole provided on the first locking lever. Furthermore, the pin element cooperates with at least one slot hole on the second locking lever.
  • the first locking lever protrudes at least partially into the second locking lever.
  • the second locking lever has a complementary to the distal end portion of the first locking lever recess formed, which is intended to at least partially receive the second locking lever.
  • the invention includes the technical teaching that the respective locking lever has a respective spring element, wherein the respective spring element is provided to return the respective locking lever when releasing the parking brake in a starting position.
  • the respective spring element counteracts the actuating force by the actuating arm.
  • the first locking lever comes due to the spring force of the first spring element at any time on the actuator to the plant.
  • the actuating arm has at least one rolling element, which is provided to unroll at an axial actuation of the actuating arm at least on the first locking lever in order to realize a low-friction connection at least between the actuating arm and the first locking lever.
  • the rolling element comes to rest both on the actuating device and on the first locking lever, so that the first actuating arm is supported radially on the actuating device.
  • at least two rolling elements are arranged on the actuating arm, wherein a first rolling element is intended to unroll on the actuating device, and wherein a second rolling element is provided to unroll on the locking lever.
  • the actuating arm cooperates with a locking pin on the actuating device to lock the axial position of the actuating arm.
  • a recess is formed on the actuating arm, the purpose is provided to at least partially receive the Vernegelungspin and to realize a locking of the actuating arm when inserting the parking brake.
  • the actuating device preferably has a sensor element for detecting the respective position of the actuating arm.
  • the sensor element indicates, in particular, whether the actuating arm is in the position required for engaging the parking brake.
  • FIG. 1 shows a schematic sectional view of a parking lock arrangement according to the invention, wherein a parking lock is released
  • FIG 2 is a schematic sectional view of the parking lock assembly according to the invention according to Figure 1, wherein the parking brake is engaged, and
  • FIG. 3 shows an exploded view of the parking brake arrangement according to the invention, shown only partially, according to FIG. 1.
  • the parking brake assembly for a transmission of a motor vehicle on a first and second in a transmission housing 3 pivotally mounted on a respective bearing element 20a, 20b locking lever 4a, 4b. Both locking levers 4a, 4b have a respective pawl 5a, 5b.
  • the parking brake arrangement has a parking lock gear 2 connected in a rotationally fixed manner to a transmission shaft 1, wherein the parking lock gear 2 has a multiplicity of alternately arranged teeth 15 and tooth gaps 6 on a peripheral surface.
  • the respective pawl 5a, 5b is intended to engage when inserting a parking brake in a respective tooth gap 6a, 6b on the parking lock gear 2 to the
  • first locking lever 4a by an actuator 7 can be actuated. Further, the first locking lever 4 a is connected via a pin connection 9 with the second locking lever 4 b, wherein the pin connection 9 a Pin member 10 which connects the first and the second locking lever 4a, 4b in the radial direction with each other.
  • the actuating device 7 comprises an axially actuable actuating arm 8, which comes to rest on the first locking lever 4a.
  • the actuating arm 8 comprises three rolling elements 12a, 12b, 12c, wherein two rolling elements 12a, 12b are provided to unroll upon axial actuation of the actuating arm 8 on a housing 19 of the actuator 7, and wherein a rolling element 12c is provided at an axial Actuation of the actuating arm 8 on the first locking lever 4außrol- len to operate this radially.
  • the actuating device 7 further has a sensor element 14, which is provided for detecting the respective position of the actuating arm 8.
  • the actuating arm 8 are in a maximum extended position and the two locking levers 4a, 4b in an initial position.
  • the respective locking lever 4a, 4b held by a respective spring element 1 1 a, 1 1 b arranged thereon.
  • the two pawls 5a, 5b are located outside the tooth spaces 6a, 6b on the parking lock gear 2. Thus, the parking brake is not activated.
  • the actuating arm 8 are in a maximum retracted position and the two locking levers 4a, 4b in a parking lock position.
  • the parking brake position of the locking levers 4a, 4b is initiated by an axial movement of the actuating arm 8 along a ramp 16 on the first locking lever 4a.
  • the first locking lever 4a is pressed radially in the direction of the parking lock gear 2, wherein the first spring element 1 1 a counteracts the movement of the first locking lever 4a.
  • the first locking lever 4 a operates via the pin connection 9, the second locking lever 4 b, which is also pressed radially in the direction of the parking lock gear 2, wherein the second spring element 1 1 b counteracts the movement of the second locking lever 4a.
  • the respective pawl 5a, 5b penetrates into the respective tooth gap 6a, 6b on the parking lock gear 2. This activates the parking lock. Furthermore, the actuating arm 8 acts with a locking pin 13 on the actuating device 7. together to lock the axial position of the actuating arm 8. The sensor element 14 outputs a signal that the parking lock is activated.
  • Figure 3 shows an exploded view of the two locking levers 4a, 4b, which are connected to each other via the pin member 10.
  • the first locking lever 4a projects partially into the second locking lever 4b.
  • the second locking lever 4b has a recess 21 which is provided to receive a distal end portion of the first locking lever 4a.
  • the pin element 10 extends through two slot bores 17a, 17b on the second locking lever 4b and a bore 18 on the first locking lever 4a and thus enables an operative connection between the first and the second locking lever 4a, 4b.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gear-Shifting Mechanisms (AREA)
  • Braking Arrangements (AREA)

Abstract

The invention relates to a parking lock arrangement for a transmission of a motor vehicle, comprising a parking lock toothed wheel (2) connected to a transmission shaft (1) for rotation therewith, a first and a second locking lever (4a, 4b) pivotably mounted in a transmission housing (3), each with a detent (5a, 5b), each detent (5a, 5b) being designed to fit in a respective tooth space (6a, 6b) on the parking lock toothed wheel (2), when a parking lock is engaged, in order to block the parking lock toothed wheel (2), the first locking lever (4a) being actuatable by an actuating device (7), and the second locking lever (4b) being actuatable by the first locking lever (4a).

Description

Parksperrenanordnung für ein Getriebe eines Kraftfahrzeugs  Parking lock arrangement for a transmission of a motor vehicle
Die Erfindung betrifft eine Parksperrenanordnung für ein Getriebe eines Kraftfahrzeugs. Ferner betrifft die Erfindung ein Getriebe eines Kraftfahrzeugs, umfassend die zuvor genannte Parksperrenanordnung. The invention relates to a parking lock arrangement for a transmission of a motor vehicle. Furthermore, the invention relates to a transmission of a motor vehicle, comprising the aforementioned parking lock arrangement.
Kraftfahrzeuge mit Automatikgetrieben verfügen in der Regel über eine Parksperrenanordnung, die ein unbeabsichtigtes Losrollen des abgestellten Kraftfahrzeugs verhindert. Die Parksperrenanordnung blockiert typischerweise eine Welle eines Getriebes des Kraftfahrzeugs, beispielsweise des Automatikgetriebes selbst oder eines nachgeordneten Differentialgetriebes. Die zu blockierende Welle ist derart gewählt, dass ihre Blockierung zuverlässig eine Bewegung der Antriebsräder des Kraftfahrzeugs verhindert. Je nach Getriebeaufbau kann es sich dabei beispielsweise um die Getriebeausgangswelle oder eine zentrale Getriebewelle handeln. Motor vehicles with automatic transmissions usually have a parking brake arrangement which prevents unintentional rolling of the parked motor vehicle. The parking brake assembly typically blocks a shaft of a transmission of the motor vehicle, such as the automatic transmission itself or a downstream differential gear. The shaft to be blocked is chosen such that its blocking reliably prevents movement of the drive wheels of the motor vehicle. Depending on the transmission structure may be, for example, the transmission output shaft or a central transmission shaft.
Die DE 101 31 735 A1 offenbart eine Parksperre für ein Fahrzeuggetriebe, bei der ein Parksperrenzahnrad drehfest an einem Differentialgetriebegehäuse angeordnet ist und bei der ein um eine Drehachse schwenkbarer Sperrhebel mittels einer Betätigungsvorrichtung in Zahnlücken des Parksperrenzahnrades ein- und auslegbar ist. Das Parksperrenzahnrad ist neben einem Ringsteg des Differentialgetriebegehäuses drehfest auf diesem angeordnet. Auf der dem Parksperrenzahnrad abgewandten Seite des Ringsteges ist ein Antriebszahnrad angeordnet und mit dem Ringsteg fest verbunden. Die DE 10 2008 000 177 A1 beschreibt eine Vorrichtung zur Schwingungsdämpfung einer Parksperre mit einer schwenkbaren Sperrklinke, die in ein Parksperrenrad einrastet. DE 101 31 735 A1 discloses a parking brake for a vehicle transmission, in which a parking lock gear is rotatably mounted on a differential gear housing and in which a pivotable about an axis locking lever by means of an actuator in tooth gaps of the parking lock gear is switched on and laid out. The parking lock gear is rotatably arranged next to a ring land of the differential gear housing on this. On the side facing away from the parking lock gear side of the annular web a drive gear is arranged and fixedly connected to the annular web. DE 10 2008 000 177 A1 describes a device for vibration damping of a parking brake with a pivotable pawl which engages in a parking lock gear.
Die DE 10 2006 030 998 A1 beschreibt ein Betätigungselement für eine Parksperre mit einer verschwenkbaren Sperrklinke. Die DE 10 2014 1 17 731 A1 beschreibt eine Arretierungsbaugruppe mit einer drehbaren Klinke zur Arretierung eines Außenrades und einem selektiv zu betätigenden Aktor und einem Vorspannmechanismus. Die Aufgabe der vorliegenden Erfindung besteht darin, eine Parksperrenanordnung dahingehend weiterzuentwickeln, dass die Parksperrenanordnung eine erhöhte Festigkeit bei gleichzeitig kompakterer Bauweise aufweist. DE 10 2006 030 998 A1 describes an actuating element for a parking brake with a pivotable pawl. DE 10 2014 1 17 731 A1 describes a locking assembly with a rotatable pawl for locking an external gear and a selectively actuated actuator and a biasing mechanism. The object of the present invention is to further develop a parking lock arrangement in such a way that the parking lock arrangement has increased strength and at the same time more compact design.
Die erfindungsgemäße Parksperrenanordnung für ein Getriebe eines Kraftfahrzeugs umfasst ein drehfest mit einer Getriebewelle verbundenes Parksperrenzahnrad, einen ersten und zweiten in einem Getriebegehäuse schwenkbar gelagerten Sperrhebel mit einem jeweiligen Sperrhaken, wobei der jeweilige Sperrhaken dazu vorgesehen ist, beim Einlegen einer Parksperre in einer jeweiligen Zahnlücke am Parksperrenzahnrad einzugreifen, um das Parksperrenzahnrad zu blockieren, wobei der erste Sperrhebel von einer Betätigungseinrichtung betätigbar ist, und wobei der zweite Sperrhebel von dem ersten Sperrhebel betätigbar ist. Mit anderen Worten ist jeder der beiden Sperrhebel über ein jeweiliges Lagerelement schwenkbar im Getriebegehäuse gelagert und dafür vorgesehen, die Parksperre einzuleiten. Durch die Anordnung von zwei Sperrhebeln zur Realisierung der Parksperre erhöht sich die Festigkeit der Parksperrenano- rdnung, denn die auf den jeweiligen Sperrhebel wirkende Kraft verteilt sich gleichmäßig auf beide Sperrhebel. Ferner wird lediglich der erste Sperrhebel von der Betätigungseinrichtung betätigt, um die Parksperre einzulegen. Der zweite Sperrhebel wird über den ersten Sperrhebel betätigt und bedarf somit keiner separaten Betätigungsvorrichtung. Daraus ergibt sich der Vorteil einer kompakten Bauweise der Parksper- renanordnung. The parking brake assembly according to the invention for a transmission of a motor vehicle comprises a rotatably connected to a transmission shaft parking lock gear, a first and second pivotally mounted in a transmission housing locking lever with a respective pawl, wherein the respective pawl is provided when inserting a parking brake in a respective tooth gap on the parking lock gear intervening to block the parking lock gear, the first lock lever being operable by an actuator, and the second lock lever being operable by the first lock lever. In other words, each of the two locking levers is pivotally mounted via a respective bearing element in the transmission housing and provided for initiating the parking brake. The arrangement of two locking levers to realize the parking lock increases the strength of the Parksperrenano- tion, because the force acting on the respective locking lever force is distributed evenly on both locking lever. Further, only the first lock lever is operated by the actuator to engage the parking brake. The second locking lever is actuated via the first locking lever and thus does not require a separate actuating device. This results in the advantage of a compact design of the parking brake arrangement.
Vorzugsweise weist die Betätigungseinrichtung einen axial betätigbaren Betätigungsarm auf, der an dem ersten Sperrhebel zur Anlage kommt und den ersten Sperrhebel radial betätigt. Insbesondere ist der Betätigungsarm axial verschiebbar an der Betäti- gungseinrichtung gelagert. Ferner weist der erste Sperrhebel eine Rampe auf, die dazu vorgesehen ist, mit dem Betätigungsarm führungstechnisch zusammenzuwirken, um dabei den ersten Sperrhebel radial in Richtung des Parksperrenzahnrads zu bewegen. Bevorzugt ist der erste Sperrhebel über eine Stiftverbindung mit dem zweiten Sperrhebel verbunden, wobei die Stiftverbindung ein Stiftelement aufweist, das den ersten und den zweiten Sperrhebel zumindest in radialer Richtung miteinander verbindet. Insbesondere ist das Stiftelement in einer dafür vorgesehenen Bohrung am ersten Sperrhebel angeordnet. Ferner wirkt das Stiftelement mit mindestens einer Langlochbohrung am zweiten Sperrhebel zusammen. Preferably, the actuating device has an axially actuable actuating arm, which comes to rest on the first locking lever and radially actuates the first locking lever. In particular, the actuating arm is mounted axially displaceably on the actuating device. Further, the first locking lever has a ramp which is intended to cooperate with the operating arm in terms of guidance, in order to move the first locking lever radially in the direction of the parking lock gear. Preferably, the first locking lever is connected via a pin connection with the second locking lever, wherein the pin connection comprises a pin member which connects the first and the second locking lever at least in the radial direction. In particular, the pin element is arranged in a hole provided on the first locking lever. Furthermore, the pin element cooperates with at least one slot hole on the second locking lever.
Des Weiteren bevorzugt ragt der erste Sperrhebel zumindest teilweise in den zweiten Sperrhebel. Vorzugsweise weist der zweite Sperrhebel eine komplementär zum dista- len Endabschnitt des ersten Sperrhebels ausgebildete Ausnehmung auf, die dazu vorgesehen ist, den zweiten Sperrhebel zumindest teilweise aufzunehmen. Furthermore preferably, the first locking lever protrudes at least partially into the second locking lever. Preferably, the second locking lever has a complementary to the distal end portion of the first locking lever recess formed, which is intended to at least partially receive the second locking lever.
Die Erfindung schließt die technische Lehre ein, dass der jeweilige Sperrhebel ein jeweiliges Federelement aufweist, wobei das jeweilige Federelement dazu vorgesehen ist, den jeweiligen Sperrhebel beim Lösen der Parksperre in eine Ausgangsposition zurückzuführen. Mit anderen Worten wirkt das jeweilige Federelement der Betätigungskraft durch den Betätigungsarm entgegen. Der erste Sperrhebel kommt aufgrund der Federkraft des ersten Federelements zu jedem Zeitpunkt an dem Betätigungselement zur Anlage. The invention includes the technical teaching that the respective locking lever has a respective spring element, wherein the respective spring element is provided to return the respective locking lever when releasing the parking brake in a starting position. In other words, the respective spring element counteracts the actuating force by the actuating arm. The first locking lever comes due to the spring force of the first spring element at any time on the actuator to the plant.
Vorzugsweise weist der Betätigungsarm mindestens ein Rollelement auf, das dazu vorgesehen ist, bei einer axialen Betätigung des Betätigungsarms zumindest am ersten Sperrhebel abzurollen, um eine reibungsarme Verbindung zumindest zwischen dem Betätigungsarm und dem ersten Sperrhebel zu realisieren. Vorzugsweis kommt das Rollelement sowohl an der Betätigungsvorrichtung als auch am ersten Sperrhebel zur Anlage, sodass sich der erste Betätigungsarm radial an der Betätigungsvorrichtung abstützt. Insbesondere sind mindestens zwei Rollelemente am Betätigungsarm angeordnet, wobei ein erstes Rollelement dazu vorgesehen ist, an der Betätigungsvorrichtung abzurollen, und wobei ein zweites Rollelement dazu vorgesehen ist, an dem Sperrhebel abzurollen. Preferably, the actuating arm has at least one rolling element, which is provided to unroll at an axial actuation of the actuating arm at least on the first locking lever in order to realize a low-friction connection at least between the actuating arm and the first locking lever. Preferably, the rolling element comes to rest both on the actuating device and on the first locking lever, so that the first actuating arm is supported radially on the actuating device. In particular, at least two rolling elements are arranged on the actuating arm, wherein a first rolling element is intended to unroll on the actuating device, and wherein a second rolling element is provided to unroll on the locking lever.
Ferner bevorzugt wirkt der Betätigungsarm mit einem Verriegelungspin an der Betätigungsvorrichtung zusammen, um die axiale Position des Betätigungsarms zu verriegeln. Insbesondere ist am Betätigungsarm eine Aussparung ausgebildet, die dazu vorgesehen ist, den Vernegelungspin zumindest teilweise aufzunehmen und ein Einrasten des Betätigungsarms beim Einlegen der Parksperre zu realisieren. Further preferably, the actuating arm cooperates with a locking pin on the actuating device to lock the axial position of the actuating arm. In particular, a recess is formed on the actuating arm, the purpose is provided to at least partially receive the Vernegelungspin and to realize a locking of the actuating arm when inserting the parking brake.
Des Weiteren bevorzugt weist die Betätigungsvorrichtung ein Sensorelement zur De- tektion der jeweiligen Position des Betätigungsarms auf. Das Sensorelement gibt insbesondere an, ob sich der Betätigungsarm in der zum Einlegen der Parksperre notwendigen Position befindet. Furthermore, the actuating device preferably has a sensor element for detecting the respective position of the actuating arm. The sensor element indicates, in particular, whether the actuating arm is in the position required for engaging the parking brake.
Im Folgenden wird ein Ausführungsbeispiel der Erfindung anhand der Zeichnungen, in welcher gleiche oder ähnliche Elemente mit dem gleichen Bezugszeichen versehen sind, näher erläutert. Hierbei zeigt In the following, an embodiment of the invention with reference to the drawings, in which the same or similar elements are provided with the same reference numerals, explained in more detail. This shows
Figur 1 eine schematische Schnittdarstellung einer erfindungsgemäßen Parksperrenanordnung, wobei eine Parksperre gelöst ist, 1 shows a schematic sectional view of a parking lock arrangement according to the invention, wherein a parking lock is released,
Figur 2 eine schematische Schnittdarstellung der erfindungsgemäßen Parksperrenanordnung gemäß Figur 1 , wobei die Parksperre eingelegt ist, und Figure 2 is a schematic sectional view of the parking lock assembly according to the invention according to Figure 1, wherein the parking brake is engaged, and
Figur 3 eine Explosionsdarstellung der nur teilweise dargestellten erfindungsge- mäßen Parksperrenanordnung nach Figur 1 . FIG. 3 shows an exploded view of the parking brake arrangement according to the invention, shown only partially, according to FIG. 1.
Gemäß den Figuren 1 und 2 weist die erfindungsgemäße Parksperrenanordnung für ein Getriebe eines Kraftfahrzeugs einen ersten und zweiten in einem Getriebegehäuse 3 schwenkbar über ein jeweiliges Lagerelement 20a, 20b gelagerten Sperrhebel 4a, 4b auf. Beide Sperrhebel 4a, 4b haben einen jeweiligen Sperrhaken 5a, 5b. Ferner weist die Parksperrenanordnung ein drehfest mit einer Getriebewelle 1 verbundenes Parksperrenzahnrad 2, wobei das Parksperrenzahnrad 2 an einer Umfangsfläche eine Vielzahl von abwechselnd angeordneten Zähnen 15 und Zahnlücken 6 aufweist. Der jeweilige Sperrhaken 5a, 5b ist dazu vorgesehen, beim Einlegen einer Parksperre in einer jeweiligen Zahnlücke 6a, 6b am Parksperrenzahnrad 2 einzugreifen, um dasAccording to Figures 1 and 2, the parking brake assembly according to the invention for a transmission of a motor vehicle on a first and second in a transmission housing 3 pivotally mounted on a respective bearing element 20a, 20b locking lever 4a, 4b. Both locking levers 4a, 4b have a respective pawl 5a, 5b. Furthermore, the parking brake arrangement has a parking lock gear 2 connected in a rotationally fixed manner to a transmission shaft 1, wherein the parking lock gear 2 has a multiplicity of alternately arranged teeth 15 and tooth gaps 6 on a peripheral surface. The respective pawl 5a, 5b is intended to engage when inserting a parking brake in a respective tooth gap 6a, 6b on the parking lock gear 2 to the
Parksperrenzahnrad 2 zu blockieren. Dazu ist der erste Sperrhebel 4a von einer Betätigungseinrichtung 7 betätigbar. Ferner ist der erste Sperrhebel 4a über eine Stiftverbindung 9 mit dem zweiten Sperrhebel 4b verbunden, wobei die Stiftverbindung 9 ein Stiftelement 10 aufweist, das den ersten und den zweiten Sperrhebel 4a, 4b in radialer Richtung miteinander verbindet. Parking lock gear 2 to block. For this purpose, the first locking lever 4a by an actuator 7 can be actuated. Further, the first locking lever 4 a is connected via a pin connection 9 with the second locking lever 4 b, wherein the pin connection 9 a Pin member 10 which connects the first and the second locking lever 4a, 4b in the radial direction with each other.
Die Betätigungseinrichtung 7 umfasst einen axial betätigbaren Betätigungsarm 8, der an dem ersten Sperrhebel 4a zur Anlage kommt. Der Betätigungsarm 8 umfasst drei Rollelemente 12a, 12b, 12c, wobei zwei Rollelemente 12a, 12b dazu vorgesehen sind, bei einer axialen Betätigung des Betätigungsarms 8 an einem Gehäuse 19 der Betätigungseinrichtung 7 abzurollen, und wobei ein Rollelement 12c dazu vorgesehen ist, bei einer axialen Betätigung des Betätigungsarms 8 am ersten Sperrhebel 4a abzurol- len, um diesen radial zu betätigen. Dadurch werden eine reibungsarme axiale Betätigung des Betätigungsarms 8 und eine damit einhergehende radiale Betätigung des ersten Sperrhebels 4b realisiert. Die Betätigungsvorrichtung 7 weist ferner ein Sensorelement 14 auf, das zur Detektion der jeweiligen Position des Betätigungsarms 8 vorgesehen ist. The actuating device 7 comprises an axially actuable actuating arm 8, which comes to rest on the first locking lever 4a. The actuating arm 8 comprises three rolling elements 12a, 12b, 12c, wherein two rolling elements 12a, 12b are provided to unroll upon axial actuation of the actuating arm 8 on a housing 19 of the actuator 7, and wherein a rolling element 12c is provided at an axial Actuation of the actuating arm 8 on the first locking lever 4a abzurol- len to operate this radially. As a result, a low-friction axial actuation of the actuating arm 8 and a concomitant radial actuation of the first locking lever 4b are realized. The actuating device 7 further has a sensor element 14, which is provided for detecting the respective position of the actuating arm 8.
Gemäß Figur 1 befinden sich der Betätigungsarm 8 in einer maximal ausgefahrenen Position und die beiden Sperrhebel 4a, 4b in einer Ausgangsposition. In dieser Ausgangsposition wird der jeweilige Sperrhebel 4a, 4b durch ein jeweiliges daran angeordnetes Federelement 1 1 a, 1 1 b gehalten. Die beiden Sperrhaken 5a, 5b befinden sich außerhalb der Zahnlücken 6a, 6b am Parksperrenzahnrad 2. Somit ist die Parksperre nicht aktiviert. According to Figure 1, the actuating arm 8 are in a maximum extended position and the two locking levers 4a, 4b in an initial position. In this initial position, the respective locking lever 4a, 4b held by a respective spring element 1 1 a, 1 1 b arranged thereon. The two pawls 5a, 5b are located outside the tooth spaces 6a, 6b on the parking lock gear 2. Thus, the parking brake is not activated.
Nach Figur 2 befinden sich der Betätigungsarm 8 in einer maximal eingefahrenen Position und die beiden Sperrhebel 4a, 4b in einer Parksperrenposition. Die Parksper- renposition der Sperrhebel 4a, 4b wird durch eine axiale Bewegung des Betätigungsarms 8 entlang einer Rampe 16 am ersten Sperrhebel 4a eingeleitet. Dadurch wird der erste Sperrhebel 4a radial in Richtung des Parksperrenzahnrads 2 gedrückt, wobei das erste Federelement 1 1 a der Bewegung des ersten Sperrhebels 4a entgegenwirkt. Der erste Sperrhebel 4a betätigt über die Stiftverbindung 9 den zweiten Sperr- hebel 4b, der ebenfalls radial in Richtung des Parksperrenzahnrads 2 gedrückt wird, wobei das zweite Federelement 1 1 b der Bewegung des zweiten Sperrhebels 4a entgegenwirkt. Der jeweilige Sperrhaken 5a, 5b dringt in die jeweilige Zahnlücke 6a, 6b am Parksperrenzahnrad 2 ein. Dadurch wird die Parksperre aktiviert. Ferner wirkt der Betätigungsarm 8 mit einem Verriegelungspin 13 an der Betätigungsvorrichtung 7 zu- sammen, um die axiale Position des Betätigungsarms 8 zu verriegeln. Das Sensorelement 14 gibt ein Signal aus, dass die Parksperre aktiviert ist. According to Figure 2, the actuating arm 8 are in a maximum retracted position and the two locking levers 4a, 4b in a parking lock position. The parking brake position of the locking levers 4a, 4b is initiated by an axial movement of the actuating arm 8 along a ramp 16 on the first locking lever 4a. Thereby, the first locking lever 4a is pressed radially in the direction of the parking lock gear 2, wherein the first spring element 1 1 a counteracts the movement of the first locking lever 4a. The first locking lever 4 a operates via the pin connection 9, the second locking lever 4 b, which is also pressed radially in the direction of the parking lock gear 2, wherein the second spring element 1 1 b counteracts the movement of the second locking lever 4a. The respective pawl 5a, 5b penetrates into the respective tooth gap 6a, 6b on the parking lock gear 2. This activates the parking lock. Furthermore, the actuating arm 8 acts with a locking pin 13 on the actuating device 7. together to lock the axial position of the actuating arm 8. The sensor element 14 outputs a signal that the parking lock is activated.
Figur 3 stellt eine Explosionsdarstellung der beiden Sperrhebel 4a, 4b dar, die über das Stiftelement 10 miteinander verbunden sind. Der erste Sperrhebel 4a ragt dabei teilweise in den zweiten Sperrhebel 4b. Dazu weist der zweite Sperrhebel 4b eine Ausnehmung 21 auf, die dazu vorgesehen ist, einen distalen Endabschnitt des ersten Sperrhebels 4a aufzunehmen. Das Stiftelement 10 verläuft durch zwei Langlochbohrungen 17a, 17b am zweiten Sperrhebel 4b und eine Bohrung 18 am ersten Sperrhe- bei 4a und ermöglicht so eine Wirkverbindung zwischen dem ersten und dem zweiten Sperrhebel 4a, 4b. Figure 3 shows an exploded view of the two locking levers 4a, 4b, which are connected to each other via the pin member 10. The first locking lever 4a projects partially into the second locking lever 4b. For this purpose, the second locking lever 4b has a recess 21 which is provided to receive a distal end portion of the first locking lever 4a. The pin element 10 extends through two slot bores 17a, 17b on the second locking lever 4b and a bore 18 on the first locking lever 4a and thus enables an operative connection between the first and the second locking lever 4a, 4b.
Bezuqszeichenliste LIST OF REFERENCES
1 Getriebewelle 1 gear shaft
2 Parksperrenzahnrad  2 parking lock gear
3 Getriebegehäuse  3 gearbox housing
4a, 4b Sperrhebel  4a, 4b locking lever
5a, 5b Sperrhaken  5a, 5b locking hook
6, 6a, 6b Zahnlücke  6, 6a, 6b tooth gap
7 Betätigungseinrichtung  7 actuating device
8 Betätigungsarm  8 operating arm
9 Stiftverbindung  9 pin connection
10 Stiftelement  10 pin element
1 1 a, 1 1 b Federelement  1 1 a, 1 1 b spring element
12a-12c Rollelement  12a-12c rolling element
13 Verriegelungspin  13 locking pin
14 Sensorelement  14 sensor element
15 Zahn  15 tooth
16 Rampe  16 ramp
17a, 17b Langlochbohrung  17a, 17b long hole drilling
18 Bohrung  18 hole
19 Gehäuse  19 housing
20a, 20b Lagerelement  20a, 20b bearing element
21 Ausnehmung  21 recess

Claims

Patentansprüche claims
1 . Parksperrenanordnung für ein Getriebe eines Kraftfahrzeugs, umfassend ein drehfest mit einer Getriebewelle (1 ) verbundenes Parksperrenzahnrad (2), einen ers- ten und zweiten in einem Getriebegehäuse (3) schwenkbar gelagerten Sperrhebel (4a, 4b) mit einem jeweiligen Sperrhaken (5a, 5b), wobei der jeweilige Sperrhaken (5a, 5b) dazu vorgesehen ist, beim Einlegen einer Parksperre in einer jeweiligen Zahnlücke (6a, 6b) am Parksperrenzahnrad (2) einzugreifen, um das Parksperrenzahnrad (2) zu blockieren, wobei der erste Sperrhebel (4a) von einer Betätigungsein- richtung (7) betätigbar ist, und wobei der zweite Sperrhebel (4b) von dem ersten Sperrhebel (4a) betätigbar ist, 1 . A parking brake assembly for a transmission of a motor vehicle, comprising a parking lock gear (2) rotatably connected to a transmission shaft (1), first and second lock levers (4a, 4b) pivotally mounted in a transmission housing (3) with a respective pawl (5a, 5b ), wherein the respective pawl (5a, 5b) is provided to engage when engaging a parking brake in a respective tooth gap (6a, 6b) on the parking lock gear (2) to block the parking lock gear (2), wherein the first locking lever (4a ) is operable by an actuating device (7), and wherein the second locking lever (4b) can be actuated by the first locking lever (4a),
dadurch gekennzeichnet, dass der erste Sperrhebel (4a) über eine Stiftverbindung (9) mit dem zweiten Sperrhebel (4b) verbunden ist, wobei die Stiftverbindung (9) ein Stiftelement (10) aufweist, das den ersten und den zweiten Sperrhebel (4a, 4b) zumindest in radialer Richtung miteinander verbindet,  characterized in that the first locking lever (4a) is connected to the second locking lever (4b) via a pin connection (9), the pin connection (9) comprising a pin element (10) comprising the first and second locking levers (4a, 4b ) connects to each other at least in the radial direction,
wobei eine Wirkverbindung zwischen den Sperrhebeln (4a, 4b) dergestalt ausgebildet wird, dass der zweite Sperrhebel (4b) eine Ausnehmung aufweist, die derart ausgebildet ist, einen distalen Endabschnitt des ersten Sperrhebels (4a) aufzunehmen, wobei das Stiftelement (10) durch zwei Langlochbohrungen (17a, 17b) am zwei- ten Sperrhebel (4b) und eine Bohrung (18) am ersten Sperrhebel (4a) verläuft.  wherein an operative connection between the locking levers (4a, 4b) is formed such that the second locking lever (4b) has a recess adapted to receive a distal end portion of the first locking lever (4a), the pin member (10) being formed by two Long hole bores (17a, 17b) on the second locking lever (4b) and a bore (18) on the first locking lever (4a) runs.
2. Parksperrenanordnung nach Anspruch 1 , 2. parking brake assembly according to claim 1,
dadurch gekennzeichnet, dass die Betätigungseinrichtung (7) einen axial betätigbaren Betätigungsarm (8) aufweist, der an dem ersten Sperrhebel (4a) zur Anlage kommt und den ersten Sperrhebel (4a) radial betätigt. characterized in that the actuating device (7) has an axially actuable actuating arm (8) which comes to rest on the first locking lever (4a) and radially actuates the first locking lever (4a).
3. Parksperrenanordnung nach Anspruch 1 , 3. parking brake assembly according to claim 1,
dadurch gekennzeichnet, dass der jeweilige Sperrhebel (4a, 4b) ein jeweiliges Federelement (1 1 a, 1 1 b) aufweist, wobei das jeweilige Federelement (1 1 a, 1 1 b) dazu vorgesehen ist, den jeweiligen Sperrhebel (4a, 4b) beim Lösen der Parksperre in eine Ausgangsposition zurückzuführen. characterized in that the respective locking lever (4a, 4b) has a respective spring element (1 1 a, 1 1 b), wherein the respective spring element (1 1 a, 1 1 b) thereto is provided, the respective locking lever (4a, 4b) due to the release of the parking brake in a starting position.
4. Parksperrenanordnung nach Anspruch 2, 4. parking brake assembly according to claim 2,
dadurch gekennzeichnet, dass der Betätigungsarm (8) mindestens ein Rollelement (12a) aufweist, das dazu vorgesehen ist, bei einer axialen Betätigung des Betätigungsarms (8) zumindest am ersten Sperrhebel (4a) abzurollen, um eine reibungsarme Verbindung zumindest zwischen dem Betätigungsarm (8) und dem ersten Sperrhebel (4a) zu realisieren. characterized in that the actuating arm (8) comprises at least one rolling element (12a) intended to unroll at least at the first locking lever (4a) during axial actuation of the actuating arm (8) to provide a low friction connection at least between the actuating arm (8 ) and the first locking lever (4a) to realize.
5. Parksperrenanordnung nach Anspruch 2, 5. parking brake assembly according to claim 2,
dadurch gekennzeichnet, dass der Betätigungsarm (8) mit einem Verriegelungspincharacterized in that the actuating arm (8) with a locking pin
(13) an der Betätigungsvorrichtung (7) zusammenwirkt, um die axiale Position des Betätigungsarms (8) zu verriegeln. (13) on the actuator (7) cooperates to lock the axial position of the actuating arm (8).
6. Parksperrenanordnung nach Anspruch 2, 6. parking brake assembly according to claim 2,
dadurch gekennzeichnet, dass die Betätigungsvorrichtung (7) ein Sensorelementcharacterized in that the actuating device (7) is a sensor element
(14) zur Detektion der jeweiligen Position des Betätigungsarms (8) aufweist. (14) for detecting the respective position of the actuating arm (8).
7. Getriebe eines Kraftfahrzeugs, umfassend eine Parksperrenanordnung nach einem der Ansprüche 1 bis 6. 7. Transmission of a motor vehicle, comprising a parking brake assembly according to one of claims 1 to 6.
PCT/DE2017/100043 2016-01-28 2017-01-24 Parking lock arrangement for a transmission of a motor vehicle WO2017129174A1 (en)

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JP7484945B2 (en) 2022-01-24 2024-05-16 いすゞ自動車株式会社 Parking brake device and vehicle

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