WO2008107286A1 - Mécanisme oscillant d'un dispositif de changement de vitesse pour une boîte de vitesses à engrenages, et procédé de fabrication correspondant - Google Patents

Mécanisme oscillant d'un dispositif de changement de vitesse pour une boîte de vitesses à engrenages, et procédé de fabrication correspondant Download PDF

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Publication number
WO2008107286A1
WO2008107286A1 PCT/EP2008/051843 EP2008051843W WO2008107286A1 WO 2008107286 A1 WO2008107286 A1 WO 2008107286A1 EP 2008051843 W EP2008051843 W EP 2008051843W WO 2008107286 A1 WO2008107286 A1 WO 2008107286A1
Authority
WO
WIPO (PCT)
Prior art keywords
parts
connecting element
shift
rocker
shift rocker
Prior art date
Application number
PCT/EP2008/051843
Other languages
German (de)
English (en)
Inventor
Matthias Feuerbach
Verena Hajek
Klaus Krämer
Original Assignee
Schaeffler 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 Kg filed Critical Schaeffler Kg
Priority to CN200880007071.7A priority Critical patent/CN101627236B/zh
Publication of WO2008107286A1 publication Critical patent/WO2008107286A1/fr

Links

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
    • F16H63/32—Gear shift yokes, e.g. shift forks
    • 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
    • F16H63/32—Gear shift yokes, e.g. shift forks
    • F16H2063/325—Rocker or swiveling forks, i.e. the forks are pivoted in the gear case when moving the sleeve
    • 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
    • F16H63/32—Gear shift yokes, e.g. shift forks
    • F16H2063/327—Gear shift yokes, e.g. shift forks essentially made of sheet metal

Definitions

  • the present invention is in the technical field of transmission technology and relates to a rocker arm of a switching device for a change-speed gearbox, in particular for motor vehicles.
  • gear change gears with countershaft gear wheels are rotatably mounted as idler gears on a main shaft, whereas countershaft gears are fixedly connected as a fixed wheels with this on the countershaft.
  • each of a counter gear and a gear wheel existing gear pairs are constantly engaged.
  • the production of the power flow takes place via the gear wheels respectively associated sliding sleeves which are rotatably mounted on the main shaft but slidably mounted along the longitudinal central axis and can be brought into positive engagement with the gear wheels.
  • a shifting device For selecting and shifting gears, a shifting device is provided, which typically comprises a control shaft which can be actuated by means of an actuating mechanism and which is displaceable along its longitudinal center axis and pivotable about this axis in the transmission housing or in the transmission housing. th module is stored.
  • the shift shaft is provided for example with shift fingers, which act on shift sleeves depending on the gear on shift rails and rigidly connected shift forks or over shift rockers.
  • Shift forks or shift rockers form with two opposing shift jaws a shift jaw into which the sliding sleeve is received in the mounted state.
  • the two switching jaws are positively connected to the sliding sleeve and engage for this purpose, for example with sliders in a circumferential groove of the sliding sleeve.
  • the two switching jaws are connected by an arcuate bracket.
  • Shifter forks are usually rigidly attached to shift rails, wherein the shift jaw cheeks are arranged transversely to the longitudinal center axis of the shift rod. In an axial displacement of the shift rods, the shift forks are taken, whereby the sliding forks connected to the shift forks is displaced along the longitudinal central axis of the main shaft, thereby switching a gear.
  • shift rockers are pivotally mounted by means of a pivot bearing, for example, on the transmission housing and can be pivoted about a pivot axis perpendicular to the longitudinal central axis of the main shaft pivot axis, thereby displacing the sliding sleeve along the main shaft.
  • shift rockers are manufactured as a casting in a casting process of a castable material such as cast iron, but this has the disadvantage that the switching rockers produced in this way are relatively heavy.
  • first line which connects the formed in the two shift jaws first settings for the pivotal mounting of the rocker arm
  • second line which formed in the two shift jaws second settings for receiving slides for positive connection with the sliding sleeve connects
  • first line and the second line should be parallel both in a longitudinal plane in which the two switching jaws extend, and in a plane perpendicular thereto. The latter is true when the first two penetrations and the second two penetrations span a common plane.
  • the shift rocker in the installed state of the sliding sleeve on a non-parallel to the longitudinal center direction of the main shaft displacement direction which greatly increases the wear.
  • the settings of shift rockers after the bending process are machined so far in order to achieve the desired tolerances for proper operation of the shift rocker.
  • such a post-machining is time consuming and costly.
  • the object of the present invention is to provide a rocker arm and a method for their production, which allows a simple and cost-effective production of the rocker arm within the desired manufacturing tolerances.
  • a shift rocker of a switching device for a change-speed gearbox, in particular for motor vehicles is shown.
  • the shift rocker comprises two a Heidelbergmaul forming half parts which are rigidly interconnected by means of a connecting element.
  • each passages for pivotal mounting of the rocker arm and for receiving slides are designed to engage in a sliding sleeve.
  • each half part is in the form of a curved, elongated flat profile formed, which consists for example of sheet steel.
  • a rigid connection of the two half-parts with the connecting element takes place for example by at least one weld.
  • the two half parts are equal to each other, which makes it possible to manufacture the two half-parts with a same bending tool, whereby time and costs can be despart.
  • the connecting element in the form of an elongated rail with bent perpendicular to the longitudinal direction side cheeks to form a U-shape is formed, it is advantageous if the side cheeks of the rail laterally surround the flat profile in the longitudinal direction.
  • the two half-parts can advantageously be connected to one another with sufficient rigidity, in particular torsional rigidity.
  • the connecting element connects the two half-parts in a central position with respect to the rocker arm rigidly together.
  • the connecting element is also provided with a force introduction element, such as a shift finger, for introducing force into the shift rocker. Due to the central position of the connecting element, a symmetrical introduction of force into the rocker arm can be ensured.
  • the connecting element is made of a material which is made of the material from which the two half-parts, is different.
  • this makes it possible to manufacture the two half-parts from a readily deformable (bendable) material, while the connecting element can be made of a material which is harder than the material from which the two half-parts are made, thereby reducing the mechanical strength To meet requirements for the material with respect to an introduction of force in the rocker arm.
  • the invention further extends to a switching device for a change-speed gearbox, in particular for a motor vehicle, which is equipped with at least one shift rocker as described above.
  • the invention extends to a change-speed gearbox, in particular for a motor vehicle, which is equipped with at least one shift rocker as described above.
  • the invention extends to a motor vehicle with a change-speed gearbox which is equipped with at least one shift rocker as described above.
  • the invention also relates to a method for producing a shift rocker as described above.
  • the method comprises rigidly connecting the two half-parts provided with pivots for pivotal mounting and the slidings of slides by means of a connecting element, the half-parts being positioned by aligning the passages to thereby achieve the desired tolerances for the shift rocker.
  • a rigid connection of the two half parts by means of welding to the connecting element.
  • the two half parts are advantageously formed from a flat profile by bending.
  • the openings can be made by stamping, drilling, milling or the like.
  • Show it: 1 is a perspective view of an embodiment of the inventive switching rocker.
  • FIG. 2 shows a further perspective view of the rocker arm of FIG. 1.
  • a generally designated by the reference numeral 1 shift rocker of two similar half-parts 2 and the two half-parts 2 rigidly interconnecting connecting element 3 is composed.
  • Each half part 2 has a curved spatial form and is formed from an elongated flat profile, which consists for example of sheet steel.
  • a plurality of bending operations are carried out in which different profile sections of the flat profile are bent with acting on the wide profile surfaces 4, 15 forces, perpendicular to the longitudinal direction of the flat profile.
  • a bending operation serves to edge a first terminal profile section 5 with respect to a second profile section 6 in a bending direction.
  • Another bending operation serves to edge a third profile section 7 relative to the second profile section 6 in the same bending direction.
  • An even further bending operation serves to edge a fourth profile section 8 with respect to the third profile section 7 in the same bending direction.
  • an even further bending operation serves to contrast a fifth profile section 9 with respect to the fourth profile section 8 in a manner opposite to the other bending directions.
  • kink bending direction The bending operations can be performed simultaneously or sequentially, in any order.
  • a first push-through 10 in the profile section 7 and a second push-through 12 in the profile section 9 are formed by drilling, punching, milling or the like.
  • the first and second penetrations 10, 12 may be formed simultaneously or sequentially, before, during, or after bending the flat profile.
  • the first settings 10 are used for pivotal mounting of the rocker arm 1, for example, on the gear housing for which purpose, for example, bearing bolts attached to the gear housing engage in the first settings 10. In the installed state, the switching rocker 1 is thus pivotable about a pivot axis extending through the two first settings 10.
  • bearing bushes 1 1 are formed, which serve to receive slides, which in turn are to be positively connected to a sliding sleeve, for example by these engage in a circumferential annular groove of the sliding sleeve.
  • the connecting element 3 connects the two half parts 2 rigidly together in a position in which the end faces of the two terminal profile sections 5 are opposite each other.
  • the end faces of the two terminal profile sections 5 may abut each other or be spaced apart, so that a gap between the two profile sections 5 is present.
  • the two by the connecting element 3 rigidly interconnected half-parts 2 are in an opposite position and form with their inside wide profile surfaces 4 together a provided with an undercut shift jaw for receiving a sliding sleeve.
  • the undercut results from the fact that the two first settings 10 occupy a greater distance from one another than the two second settings 12.
  • Each half part 2 forms a provided with the enforcements switching jaw, each consisting of the profile sections 7, 8 and 9.
  • the two switching jaws of the two half-parts 2 by an arcuate bracket, consisting of the profile sections 2 and 5 of the two half-parts 2, over the Connecting element 3 are rigidly interconnected, connected together.
  • the connecting element 3 is designed as an elongate rail with a U-shape, which is provided with side cheeks 13 folded transversely to the longitudinal axis, which reach an opposite position to the narrow profile surfaces 14 of the half-parts 2. In this case, the connecting element 3 extends beyond the two terminal profile sections 5 to approximately half the length of the adjoining profile section 6.
  • the two side cheeks 13 of the U-shaped rail are arranged over a plurality of spaced welds 16 with the half-parts 2 connected. In the illustrated embodiment, there are welds 16 each in the region of the two profile sections 5, 6. Number and position of the welds 16 can be optionally determined as needed.
  • the connecting element 3 Due to the design of the connecting element 3 as a U-shaped rail, a sufficient rigid connection of the two half-parts 2 can be effected, so that an exact shift of the gearbox ensures tet is. In particular, this can improve the torsional rigidity of the shift rocker 1.
  • the material of the connecting element 3 is displaced from the material of the two half-parts 2.
  • the two half-parts 2 consist of easily deformable sheet steel, while the connecting element is made of a relatively thick flat iron, in contrast, in order to withstand the high loads in the application of force to the rocker arm.
  • the connecting element 3 is bent at an end portion 17 perpendicular to its longitudinal axis.
  • a shift finger 22 is formed for the introduction of force into the rocker arm 1, which can be actuated, for example, via a formed on the shift shaft Wegfinger- receptacle.
  • the central with respect to the bracket and the rocker arm 1 attachment of the connecting element 3 in this case ensures a nearly symmetrical introduction of force into the rocker arm 1.
  • a first line A connecting the two first points 10 is parallel to a second line B connecting the two second points 12 within the framework of a predefinable tolerance.
  • This can be done, for example, by the use of positioning pins, which are guided through the first through-holes 10 and the second through-holes 12, respectively.
  • the two half-parts 2 are in particular positioned such that the line A and the line B, according to the orthogonal x, y, z-coordinate system indicated in FIG. 2, both in the z-direction and in the y-direction are parallel to each other.
  • the connecting element 3 is brought into position and welded to the two half-parts 2.

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

Abstract

L'invention concerne un mécanisme oscillant (1) d'un dispositif de changement de vitesse pour une boîte de vitesses à engrenages, en particulier pour des véhicules automobiles. Ce mécanisme comprend deux demi-pièces (2) formant une mâchoire de changement de vitesse (19), qui sont reliées rigidement entre elles au moyen d'un élément de liaison (3). L'invention concerne en outre un procédé de fabrication d'un tel mécanisme oscillant de changement de vitesse. Selon ce procédé, les deux demi-pièces (2) formant une mâchoire de changement de vitesse, qui sont chacune pourvues d'un passage (10) pour un montage pivotant du mécanisme oscillant et d'un passage (12) pour recevoir des coulisseaux, sont positionnées à l'aide des passages et reliées rigidement entre elles par un élément de liaison (3).
PCT/EP2008/051843 2007-03-03 2008-02-15 Mécanisme oscillant d'un dispositif de changement de vitesse pour une boîte de vitesses à engrenages, et procédé de fabrication correspondant WO2008107286A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN200880007071.7A CN101627236B (zh) 2007-03-03 2008-02-15 用于齿轮式变速齿轮箱的换挡装置的换挡摇杆及其相应的制造方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007010362.1 2007-03-03
DE200710010362 DE102007010362A1 (de) 2007-03-03 2007-03-03 Schaltschwinge einer Schaltvorrichtung für ein Zahnräderwechselgetriebe

Publications (1)

Publication Number Publication Date
WO2008107286A1 true WO2008107286A1 (fr) 2008-09-12

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/051843 WO2008107286A1 (fr) 2007-03-03 2008-02-15 Mécanisme oscillant d'un dispositif de changement de vitesse pour une boîte de vitesses à engrenages, et procédé de fabrication correspondant

Country Status (3)

Country Link
CN (1) CN101627236B (fr)
DE (1) DE102007010362A1 (fr)
WO (1) WO2008107286A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018061912A1 (fr) * 2016-09-29 2018-04-05 アイシン・エーアイ株式会社 Transmission

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT509880B1 (de) 2010-08-05 2011-12-15 Stiwa Holding Gmbh Schaltelement, schaltvorrichtung und verfahren zu deren herstellung
AT509998B1 (de) 2010-08-27 2012-01-15 Stiwa Holding Gmbh Schaltvorrichtung für ein zahnräderwechselgetriebe und verfahren zu deren herstellung
CN106402379A (zh) * 2016-05-28 2017-02-15 重庆万虎机电有限责任公司 一种变速箱及其换挡拨叉

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19919270A1 (de) * 1999-04-28 2000-11-02 Schaeffler Waelzlager Ohg Schaltschwinge mit einem Bügel zur Krafteinleitung
KR20020038349A (ko) * 2000-11-17 2002-05-23 이계안 수동변속기용 시프트 포크 어셈블리
DE10318677A1 (de) * 2003-04-24 2004-11-25 Ise Industries Gmbh Verfahren zum Herstellen von Schaltgabeln und Schaltgabel für Getriebe von Kraftfahrzeugen

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1848789U (de) * 1961-06-29 1962-03-22 Bosch Gmbh Robert Gabelfoermiger schwenkhebel, insbesondere zum einruecken des ritzelgetriebes von andrehmotoren fuer brennkraftmaschinen.
CN2755360Y (zh) * 2004-12-31 2006-02-01 苏俭雄 一种弹簧片驱动变速拨叉装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19919270A1 (de) * 1999-04-28 2000-11-02 Schaeffler Waelzlager Ohg Schaltschwinge mit einem Bügel zur Krafteinleitung
KR20020038349A (ko) * 2000-11-17 2002-05-23 이계안 수동변속기용 시프트 포크 어셈블리
DE10318677A1 (de) * 2003-04-24 2004-11-25 Ise Industries Gmbh Verfahren zum Herstellen von Schaltgabeln und Schaltgabel für Getriebe von Kraftfahrzeugen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018061912A1 (fr) * 2016-09-29 2018-04-05 アイシン・エーアイ株式会社 Transmission

Also Published As

Publication number Publication date
DE102007010362A1 (de) 2008-09-04
CN101627236B (zh) 2014-04-23
CN101627236A (zh) 2010-01-13

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