WO2015058754A1 - Différentiel léger pourvu d'une denture de frein de stationnement - Google Patents

Différentiel léger pourvu d'une denture de frein de stationnement Download PDF

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Publication number
WO2015058754A1
WO2015058754A1 PCT/DE2014/200487 DE2014200487W WO2015058754A1 WO 2015058754 A1 WO2015058754 A1 WO 2015058754A1 DE 2014200487 W DE2014200487 W DE 2014200487W WO 2015058754 A1 WO2015058754 A1 WO 2015058754A1
Authority
WO
WIPO (PCT)
Prior art keywords
differential
ring
lightweight
bearing
cage
Prior art date
Application number
PCT/DE2014/200487
Other languages
German (de)
English (en)
Inventor
Franz Kurth
Harald Martini
Thorsten Biermann
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 WO2015058754A1 publication Critical patent/WO2015058754A1/fr

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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
    • F16H48/00—Differential gearings
    • F16H48/06—Differential gearings with gears having orbital motion
    • F16H48/10—Differential gearings with gears having orbital motion with orbital spur gears
    • F16H48/11—Differential gearings with gears having orbital motion with orbital spur gears having intermeshing planet gears
    • 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
    • F16H48/00—Differential gearings
    • F16H48/06—Differential gearings with gears having orbital motion
    • F16H48/10—Differential gearings with gears having orbital motion with orbital spur gears
    • F16H2048/106—Differential gearings with gears having orbital motion with orbital spur gears characterised by two sun gears
    • 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
    • F16H48/00—Differential gearings
    • F16H48/38—Constructional details
    • F16H48/40—Constructional details characterised by features of the rotating cases
    • F16H2048/405—Constructional details characterised by features of the rotating cases characterised by features of the bearing of the rotating case

Definitions

  • the invention relates to a lightweight differential with an input gear provided for torque introduction and two provided for torque output output gears, wherein the output gears at least partially se within a differential cage, such as a differential housing, which is also formed as a planet carrier rotatably, at least one roller bearing for axial and / or radial position determination of the differential cage acts on these.
  • a differential cage such as a differential housing, which is also formed as a planet carrier rotatably, at least one roller bearing for axial and / or radial position determination of the differential cage acts on these.
  • the invention ultimately also relates to lightweight baudifferentials developed as spur gear differentials.
  • DE 101 31 735 A1 discloses a parking brake device for vehicle transmissions, which are arranged outside of the actual transmission on and in the region of the differential gear.
  • a parking lock gear is mounted on a differential gear housing, in the gear gaps can engage an activated by an actuator locking lever.
  • DE 10 2009 036 986 B4 where a differential gear comprising a differential housing with an integrally formed axle drive wheel is disclosed there, further comprising a first part of the differential housing with a flange.
  • a separate component is provided with a parking lock toothing and then fixed to the differential basket.
  • this latter publication discloses a differential for a motor vehicle, with a Drehmomenteinleitorgan, which is in operative relationship with a driven by the Drehmomenteinleitorgan transmission gear, which in turn is in engagement with a Drehmomentableitorgan, wherein a locking member, such as a pawl, with a separate at Drehmomenteinleorggan fixed parking lock gear to lock the difference can be brought.
  • the parking lock gear is designed as a chipless manufactured sheet metal component.
  • the differential is integrated in a drive train of a motor vehicle. Such a drive train is also the subject of the present invention.
  • a provided for contact with rolling elements of the bearing ring on at least one section has a parking lock teeth to come into contact with a pawl.
  • the ring thus has a running surface for the rolling elements of the rolling bearing.
  • the running surface of the rolling elements is thus in integrated external ring having a ring, wherein the external toothing is designed to come into contact with a pawl in Parkfall / Park state.
  • the ring is designed as a bearing outer ring or bearing inner ring of the rolling bearing.
  • a submodule comprising bearing elements and parking brake elements, can be used specially adapted to different vehicles in a drive train.
  • a differential can be performed when the ring is formed as an integral component of the differential basket, such as a support member.
  • the support member can also be used as a separate component, i. separated from the differential cage, be formed, whereby the adaptability is increased in terms of different requirements.
  • An advantageous embodiment is also characterized in that a press fit is combined with a positive connection.
  • the differential then builds particularly compact when the ring is formed as an integral part of a shaft portion or the support member.
  • a projection extending in the axial direction or a plurality of projections is / are positively inserted into a recess or in recesses of the carrier part.
  • a further advantageous embodiment is characterized in that the circumferentially as equally distributed projections on an end face of the differential cage are formed as nubs with preferably convex or even circular outer contour, which engage in mutual holes, such as blind holes or through holes of the support member.
  • the invention not only relates to a lightweight differential designed as a spur gear differential, but may also relate to a lightweight differential made up as a bevel gear differential.
  • the invention provides a parking lock arrangement in which the toothing is formed on a bearing ring of a roller bearing.
  • the bearing ring is integrally formed a component of a transmission, such as a shaft portion or a preferably carrier part-like component of a differential cage.
  • the parking lock toothing can be produced without cutting, for example. Forming technology, such as deep drawing operations.
  • the lightweight differential has an additional flange bearing, the outer ring is produced without cutting drawing.
  • the toothing on the outer diameter of the flange is produced by means of an additional punching process.
  • the toothing is not ground again after hardening. Only the bearing track and the seat are rebuilt beitet.
  • tapered roller bearings with non-cutting produced outer ring.
  • Parklosverzears produced without locking can be incorporated in the outer ring of the bearing.
  • the lightweight differential can be provided with a solid bearing and an integrated parking lock toothing.
  • the bearing outer ring of the solid bearing but possibly also a bearing inner ring of the solid bearing, can be designed as a tapered roller bearing in the present case. It is provided on the bearing outer ring a parking lock teeth.
  • the bearing outer ring is connected not only via a press fit, but in addition via a positive connection with the actual differential case / differential cage.
  • the massive bearing outer ring is manufactured using conventional forging processes.
  • the teeth are not reworked after a fine forging and calibration process. Only the bearing seat and the bearing track are reworked and sanded accordingly.
  • the parking lock gearing itself can consist of 100Cr6.
  • High-strength bearing steel is advantageous for the ring having the pawl toothing.
  • the lightweight differential can be unobtrusively retrofitted with an additional parking lock teeth / equipped in particular.
  • FIG. 1 shows a first embodiment of a lightweight differential constructed as a spur gear differential with two tapered roller bearings installed in an O arrangement, wherein the respective outer bearing rings have a parking lock gear
  • FIG. 4 shows the roller bearing outer ring of FIG. 3 in a perspective view
  • FIG. 5 shows a second exemplary embodiment of a lightweight construction element according to the invention, wherein a materially separated from a differential cage
  • Carrier part has a tread for rolling elements of a rolling bearing
  • FIG. 6 is an enlargement of the area VI of FIG. 5, 7 shows a third exemplary embodiment in which the differential cage with projections has a form-fitting manner in diametrically opposite recesses of a carrier part having a running surface for the rolling elements of the rolling bearing,
  • Fig. 9 is a side view of the carrier part, as it is used in the embodiments of FIGS. 7 and 8, and
  • FIG. 10 is a perspective view of the carrier part of FIG. 9th
  • a first embodiment of a lightweight differential 1 according to the invention is shown.
  • the lightweight differential 1 is formed as Stirnraddifferenzi- al 2. It has an input gear 3 in the manner of a spur gear 4. It is torque-transmitting connected to a differential cage / differential housing 5.
  • This differential cage 4 is designed in the manner of a two-part planet carrier 6.
  • two sets of planet wheels 8 are rotatably supported by hollow pins 7.
  • the planet gears of the one planetary gear set engage in a torque transmitting manner on a first sun gear 9.
  • the planet wheels of the other planetary gear set engage in a second sun gear 10 to transmit torque.
  • the respective planet gears of one planetary gear set are in meshing engagement with the planet gear of the other planetary gear set.
  • the respective sun gears 9 and 10 are connected to output shafts. This is not shown in the figures. Shown, however, is an internal toothing 1 1, via which a toothing with the output shafts is created.
  • a sleeve 12 is present between the hollow pin 7 and the planet carrier 6, a sleeve 12 is present.
  • rolling elements 16 for example in the form of cones 17 are present.
  • the rolling elements 16 run on an inner running surface 18 of the bearing outer ring 14 and on an outer running surface of the bearing inner ring 15.
  • the bearing outer ring 14 thus provides a contact surface for the rolling elements 16, namely on the inner race 18.
  • the bearing outer ring 14 has at its radially outer periphery a parking lock toothing 20.
  • a ring-like carrier part 21 is pressed between the bearing outer ring 14 and one half of the planet carrier 6.
  • a bolt 22 is driven through these three components and ensures in all three components via a form and adhesion that rotation in addition to the positive fit between the planet carrier half and the support member 21 and the support member 21 and the bearing outer ring 14 does not take place can.
  • a radially inner end region 23 of the carrier part 21 is so assembled and deep-drawn that, on the one hand, the respective sun gear 9 or 10 is supported radially, but also axially.
  • the parking lock toothing 20 is produced without cutting and the carrier part 21 is a deep-drawn part made of sheet metal.
  • FIGS. 3 and 4 it can be clearly seen that the parking lock toothing 20 is formed in a radially protruding flange region of the bearing outer ring 14.
  • Fig. 5 a second embodiment is shown, which differs in particular in that the support member 21 forms the bearing outer ring 14.
  • the parking lock toothing 20 is thus formed on a radially projecting flange portion 24.
  • FIG. 7 shows a third embodiment of a lightweight differential 1 designed as a spur gear differential 2. They differ in particular in the region of the connection between the carrier part 21 to the respective planet carrier half 6 of the second embodiment.
  • the planetary carrier 6 has an axially extending projection 25 which engages in a hole 26 of the carrier part 21.
  • the holes 26 are formed as through-holes, as shown in FIG. 9, with 3, 4, 5, 6, 7, 8 or 9 holes distributed around the circumference and extending in the axial direction on the support part 21. They are distributed equally over the circumference.
  • FIGS. 9 and 10 clearly show the uniform distribution of the holes.
  • the two sun gears 9 and 10 may also be referred to as output gears.
  • the peg ring having the peg ring is, for example, conceivable as a bearing outer ring 14 or as a carrier part 21.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Retarders (AREA)

Abstract

L'invention concerne un différentiel léger (1) comportant un pignon d'entrée (3) servant à l'entrée d'un couple et deux pignons de sortie (27) servant à la sortie d'un couple, les deux pignons de sortie (27) étant montés rotatifs au moins partiellement à l'intérieur d'un carter de différentiel (5). Au moins un palier à roulement (13) servant à déterminer la position axiale et/ou radiale du carter de différentiel (5) vient en prise avec ce dernier. Une bague destinée à venir en contact avec des corps de roulement (16) du palier à roulement (13) présente, sur au moins une partie, une denture de frein de stationnement. (20).
PCT/DE2014/200487 2013-10-21 2014-09-19 Différentiel léger pourvu d'une denture de frein de stationnement WO2015058754A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201310221254 DE102013221254A1 (de) 2013-10-21 2013-10-21 Leichtbaudifferenzial mit Parksperrenverzahnung
DE102013221254.2 2013-10-21

Publications (1)

Publication Number Publication Date
WO2015058754A1 true WO2015058754A1 (fr) 2015-04-30

Family

ID=51752957

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2014/200487 WO2015058754A1 (fr) 2013-10-21 2014-09-19 Différentiel léger pourvu d'une denture de frein de stationnement

Country Status (2)

Country Link
DE (1) DE102013221254A1 (fr)
WO (1) WO2015058754A1 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015218551A1 (de) 2015-09-28 2017-03-30 Schaeffler Technologies AG & Co. KG Planetenträger mit einer Parksperrenverzahnung und Planetengetriebe
DE102016216269A1 (de) 2016-08-30 2018-03-01 Schaeffler Technologies AG & Co. KG Differenzialgetriebe
DE102016216787A1 (de) 2016-09-06 2018-03-08 Schaeffler Technologies AG & Co. KG Umlaufrädergetriebe, insbesondere Stirnraddifferentialgetriebe
DE102016216800A1 (de) 2016-09-06 2018-03-08 Schaeffler Technologies AG & Co. KG Stirnraddifferenzial mit rücksprungbehaftetem Lagerring
DE102016216786A1 (de) 2016-09-06 2018-03-08 Schaeffler Technologies AG & Co. KG Stirnradumlaufrädergetriebe, insbesondere Stirnraddifferentialgetriebe oder Reduktionsvorstufe hierzu
DE102016216793A1 (de) 2016-09-06 2018-03-08 Schaeffler Technologies AG & Co. KG Umlaufrädergetriebe, insbesondere Stirnraddifferentialgetriebe oder Reduktionsvorstufe hierzu
DE102016216792A1 (de) 2016-09-06 2018-03-08 Schaeffler Technologies AG & Co. KG Umlaufrädergetriebe, insbesondere Stirnraddifferentialgetriebe oder Reduktionsvorstufe hierzu
DE102016216783A1 (de) 2016-09-06 2018-03-08 Schaeffler Technologies AG & Co. KG Umlaufrädergetriebe, insbesondere Stirnraddifferentialgetriebe oder Reduktionsvorstufe hierzu
DE102016216789A1 (de) 2016-09-06 2018-03-08 Schaeffler Technologies AG & Co. KG Umlaufrädergetriebe
DE102016216790B4 (de) 2016-09-06 2023-07-06 Schaeffler Technologies AG & Co. KG Umlaufrädergetriebe, nämlich Stirnraddifferentialgetriebe oder Reduktionsvorstufe hierzu
EP3622202A1 (fr) * 2018-04-20 2020-03-18 hofer powertrain innovation GmbH Concept de pont central pour un engrenage de recirculation de type roue, tel qu'un engrenage planétaire, et procédé de support associé
DE102021105604B3 (de) 2021-03-09 2022-05-19 Schaeffler Technologies AG & Co. KG Elektrisch betreibbarer Achsantriebsstrang
DE102022111092A1 (de) 2022-05-05 2023-11-09 Schaeffler Technologies AG & Co. KG Axialscheibe für ein Axiallager, Axiallager sowie Planetengetriebe mit einem Axiallager

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10131735A1 (de) 2001-07-03 2003-01-16 Volkswagen Ag Parksperre für Fahrzeuggetriebe
EP1288531A2 (fr) * 2001-08-28 2003-03-05 Johann Hay GmbH & Co. KG, Automobiltechnik Boíte d' engrenage différentiel
DE102009036986B4 (de) 2009-08-12 2011-07-07 Volkswagen AG, 38440 Ausgleichsgetriebe
DE102011081883A1 (de) 2011-08-31 2013-02-28 Schaeffler Technologies AG & Co. KG Differential mit spanlos gefertigtem Blech-Parksperrenzahnrad und Antriebsstrang
DE102011081884A1 (de) * 2011-08-31 2013-02-28 Schaeffler Technologies AG & Co. KG Stirnraddifferential mit aus Blech geformtem Parksperrenrad zum Blockieren des Differentials sowie Antriebsstrang

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10131735A1 (de) 2001-07-03 2003-01-16 Volkswagen Ag Parksperre für Fahrzeuggetriebe
EP1288531A2 (fr) * 2001-08-28 2003-03-05 Johann Hay GmbH & Co. KG, Automobiltechnik Boíte d' engrenage différentiel
DE102009036986B4 (de) 2009-08-12 2011-07-07 Volkswagen AG, 38440 Ausgleichsgetriebe
DE102011081883A1 (de) 2011-08-31 2013-02-28 Schaeffler Technologies AG & Co. KG Differential mit spanlos gefertigtem Blech-Parksperrenzahnrad und Antriebsstrang
DE102011081884A1 (de) * 2011-08-31 2013-02-28 Schaeffler Technologies AG & Co. KG Stirnraddifferential mit aus Blech geformtem Parksperrenrad zum Blockieren des Differentials sowie Antriebsstrang

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Publication number Publication date
DE102013221254A1 (de) 2015-04-23

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