WO2000011367A1 - Dispositif de synchronisation pour boite de vitesses - Google Patents

Dispositif de synchronisation pour boite de vitesses Download PDF

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Publication number
WO2000011367A1
WO2000011367A1 PCT/EP1999/004535 EP9904535W WO0011367A1 WO 2000011367 A1 WO2000011367 A1 WO 2000011367A1 EP 9904535 W EP9904535 W EP 9904535W WO 0011367 A1 WO0011367 A1 WO 0011367A1
Authority
WO
WIPO (PCT)
Prior art keywords
synchronizing
ring
intermediate ring
synchronizing device
layer
Prior art date
Application number
PCT/EP1999/004535
Other languages
German (de)
English (en)
Inventor
Winfried Maier
Original Assignee
Daimlerchrysler Ag
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 Daimlerchrysler Ag filed Critical Daimlerchrysler Ag
Publication of WO2000011367A1 publication Critical patent/WO2000011367A1/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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D23/00—Details of mechanically-actuated clutches not specific for one distinct type
    • F16D23/02—Arrangements for synchronisation, also for power-operated clutches
    • F16D23/025—Synchro rings

Definitions

  • the invention relates to a synchronizing device for a manual transmission with at least one outer and one inner synchronizing ring and optionally an intermediate ring according to the kind defined in the preamble of claim 1.
  • a generic synchronization device is known from DE 31 22 522 AI.
  • the nitrided surface also has a high hardness and a high wear resistance. Furthermore, nitriding leaves an unhardened and therefore tough core, which ensures the strength of the respective component.
  • connection layers sulfur particles and other additives that reduce friction can no longer penetrate into the ⁇ 'connection layer or into the ⁇ connection layer, thereby ensuring a uniformly high synchronization torque.
  • connection layers only certain process parameters have to be changed during nitriding, so that this layer is formed without an additional process step. Post-processing of the corresponding connection layer is advantageously no longer necessary. This results in a very simple and inexpensive manufacture of the synchronization device.
  • FIG. 2 shows a plan view of an outer synchronizing ring of the synchronizing device from FIG. 1;
  • FIG. 4 shows a plan view of an inner synchronizing ring of the synchronizing device from FIG. 1;
  • FIG. 5 shows a section along the line V-V from FIG. 4.
  • Fig. 1 shows a manual transmission, for example for use in m trucks or passenger cars, which is not shown in its entirety.
  • the manual transmission has a synchronizing device 1, a main shaft 2 and a gearwheel 3 attached to the main shaft 2.
  • gearwheels are attached to the main shaft 2, but since these are not relevant to the invention, they will not be used in the following described in more detail.
  • a countershaft which is common in manual transmissions, is also not shown in FIG. 1.
  • On the main shaft 2 there is, in addition to the gear 3, a synchronous body 4, which is connected to a sliding fork 5 via a sliding sleeve 6 and a pressure pin 7.
  • a synchronous body 4 which is connected to a sliding fork 5 via a sliding sleeve 6 and a pressure pin 7.
  • the outer synchronism 8 shown in greater detail in FIGS. 2 and 3 has a conical blade 11 on its inner diameter, whereas the inner synchronizer ring 10 shown in FIGS. 4 and 5 is provided with a conical surface 12 on its outer diameter.
  • the intermediate ring 9 arranged between the outer synchronizing ring 8 and the inner synchronizing ring 10 is completely conical, ie both its outside diameter and its inside diameter are designed as conical surfaces 13 and 14 and adapted to the conical surfaces 11 and 12 of the synchronizing rings 8 and 10.
  • the synchronizing device 1 is intended to transmit a force or a torque from the synchronizing body 4 to the gear wheel 3 via the outer synchronizing ring 8, the intermediate ring 9 and the inner synchronizing ring 10 by friction between the respective conical surfaces 11 to 14.
  • the intermediate ring 9 is first on both conical surfaces 13 and 14 provided with a friction layer known per se.
  • the process parameters to be set to form the ⁇ 'compound layer or ⁇ compound layer are the temperature in the nitriding furnace, the gas mixture within the nitriding furnace, consisting of ammonia, hydrogen and carbon dioxide, the time duration of the trier treatment, the prevailing in the nitriding furnace and the plasma required for plasma nitriding, which is controlled by current and voltage.
  • a constant coefficient of friction is constantly maintained for the conical surfaces 11 and 12, and a constant synchronizing torque can be transmitted by the synchronizing device 1.
  • the nitriding depth of the conical surfaces 11 and 12 is approximately 200 to 800 ⁇ m and the ⁇ ′ connection layer or ⁇ connection layer is approx. 1 to 20 ⁇ m, preferably approx. 10 ⁇ m thick.
  • the ⁇ 'compound layer is an iron-nitrogen compound with the chemical name Fe 4 N.
  • the ⁇ compound layer consists of the iron-nitrogen compound with the chemical name Fe 2 , 3 N.
  • the intermediate ring 9 can alternatively also be nitrided on its two conical surfaces 13 and 14 as described above by the plasma nitriding method, in which case, of course, the friction layer on the conical surfaces 11 and 12 of the synchronizing rings 8 and 10 is attached.
  • the principle of plasma nitriding also works with a simple cone synchronization without the intermediate ring 9 and in this case it is only necessary to use a cone to treat surface of one of the two synchronizing rings 8 and 10 by means of a plasma nitriding process.
  • the nitriding methods long-term gas nitriding or short-term gas nitriding can also be used.
  • the synchronization device 1 could also be designed for a single cone synchronization or for a three or multiple cone synchronization instead of for a Borg-Warner double cone synchronization.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mechanical Operated Clutches (AREA)

Abstract

L'invention concerne un dispositif de synchronisation pour boîte de vitesses, qui comprend au moins une bague de synchronisme extérieure et une bague de synchronisme intérieure (8, 10) et, éventuellement au moins une bague intermédiaire (9). Les bagues de synchronisme et la bague intermédiaire présentent chacune une surface conique (11, 12), par l'intermédiaire de laquelle elles sont en liaison l'une avec l'autre, au moins indirectement. Au moins une des bagues de synchronisme et/ou la bague intermédiaire sont constituées d'une matière de base métallique. Au moins une des bagues de synchronisme constituées de ladite matière de base métallique et/ou la bague intermédiaire sont nitrurées de telle sorte que, grâce à l'ajutage de paramètres de processus, lors de la nitruration, se forment, sur la surface conique de la bague de synchronisme et/ou sur la surface conique de la bague intermédiaire, une couche de liaison η' non métallique et/ou une couche de liaison ε non métallique.
PCT/EP1999/004535 1998-08-19 1999-07-01 Dispositif de synchronisation pour boite de vitesses WO2000011367A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1998137583 DE19837583C1 (de) 1998-08-19 1998-08-19 Synchronisiereinrichtung für ein Schaltgetriebe
DE19837583.2 1998-08-19

Publications (1)

Publication Number Publication Date
WO2000011367A1 true WO2000011367A1 (fr) 2000-03-02

Family

ID=7878004

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1999/004535 WO2000011367A1 (fr) 1998-08-19 1999-07-01 Dispositif de synchronisation pour boite de vitesses

Country Status (2)

Country Link
DE (1) DE19837583C1 (fr)
WO (1) WO2000011367A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1936223A3 (fr) * 2006-12-22 2011-01-12 Sulzer Euroflamm Germany GmbH Anneau de synchronisation
US8342307B2 (en) 2006-12-22 2013-01-01 Sulzer Euroflamm Germany Gmbh Synchronizing ring

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10334844B3 (de) * 2003-07-30 2005-06-16 Hoerbiger Antriebstechnik Gmbh Verfahren zum Herstellen eines Konusringes, vorzugsweise in Form eines Zwischenringes einer Mehrfachkonussynchronisierung, sowie ein danach hergestellter Konusring
DE10360145A1 (de) * 2003-12-20 2005-07-21 Daimlerchrysler Ag Synchronisiereinrichtung für ein Schaltgetriebe
DE102005035941B3 (de) † 2005-07-28 2007-04-19 Diehl Metall Stiftung & Co.Kg Synchronringpaket
DE102014108032A1 (de) * 2014-06-06 2015-12-17 Hoerbiger Antriebstechnik Holding Gmbh Synchronring und Synchronisationseinheit für ein Getriebe

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4738730A (en) * 1986-02-18 1988-04-19 Lindberg Corporation Steam sealing for nitrogen treated ferrous part
US4943321A (en) * 1987-03-13 1990-07-24 Mitsubishi Kinzoku Kabushiki Kaisha Synchronizer ring in speed variator made of iron-base sintered alloy
US4969378A (en) * 1989-10-13 1990-11-13 Reed Tool Company Case hardened roller cutter for a rotary drill bit and method of making
US5346560A (en) * 1991-07-16 1994-09-13 Centre Stephanois De Recherches Mecaniques Hydromecanique Et Frottement Process for the treatment of ferrous metal parts to improve their corrosion resistance and friction properties simultaneously
EP0716247A1 (fr) * 1994-12-08 1996-06-12 SINTERSTAHL Gesellschaft m.b.H. Anneau de synchronisation à surface de frottement en bronze fritté
EP0733720A1 (fr) * 1995-03-22 1996-09-25 August Bilstein GmbH Piston traité en surface

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1521621A (fr) * 1967-03-10 1968-04-19 Simca Automobiles Sa Perfectionnement au procédé de fabrication des bagues de synchronisation pour mécanisme de changement de vitesse
DE3122522A1 (de) * 1981-06-05 1982-12-23 Hermann Dipl.-Ing. 8033 Planegg Pflaum Synchronisiereinrichtung fuer formschluessige schaltkupplungen sowie verfahren zur herstellung einer solchen synchronisiereinrichtung
JPH02304220A (ja) * 1989-05-18 1990-12-18 Komatsu Forklift Co Ltd クラッチ式変速機のボークリング
DE4445898A1 (de) * 1994-12-22 1996-06-27 Schaeffler Waelzlager Kg Reibpaarung für eine Synchronisiereinrichtung in Zahnräderwechselgetrieben

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4738730A (en) * 1986-02-18 1988-04-19 Lindberg Corporation Steam sealing for nitrogen treated ferrous part
US4943321A (en) * 1987-03-13 1990-07-24 Mitsubishi Kinzoku Kabushiki Kaisha Synchronizer ring in speed variator made of iron-base sintered alloy
US4969378A (en) * 1989-10-13 1990-11-13 Reed Tool Company Case hardened roller cutter for a rotary drill bit and method of making
US5346560A (en) * 1991-07-16 1994-09-13 Centre Stephanois De Recherches Mecaniques Hydromecanique Et Frottement Process for the treatment of ferrous metal parts to improve their corrosion resistance and friction properties simultaneously
EP0716247A1 (fr) * 1994-12-08 1996-06-12 SINTERSTAHL Gesellschaft m.b.H. Anneau de synchronisation à surface de frottement en bronze fritté
EP0733720A1 (fr) * 1995-03-22 1996-09-25 August Bilstein GmbH Piston traité en surface

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1936223A3 (fr) * 2006-12-22 2011-01-12 Sulzer Euroflamm Germany GmbH Anneau de synchronisation
US8342307B2 (en) 2006-12-22 2013-01-01 Sulzer Euroflamm Germany Gmbh Synchronizing ring

Also Published As

Publication number Publication date
DE19837583C1 (de) 2000-03-30

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