EP2422101A1 - Unité de synchronisation - Google Patents

Unité de synchronisation

Info

Publication number
EP2422101A1
EP2422101A1 EP10717532A EP10717532A EP2422101A1 EP 2422101 A1 EP2422101 A1 EP 2422101A1 EP 10717532 A EP10717532 A EP 10717532A EP 10717532 A EP10717532 A EP 10717532A EP 2422101 A1 EP2422101 A1 EP 2422101A1
Authority
EP
European Patent Office
Prior art keywords
synchronous
ring
projections
friction surface
unit according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP10717532A
Other languages
German (de)
English (en)
Inventor
Norbert Huhn
Stefanie Seufert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SKF AB
Original Assignee
SKF AB
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 SKF AB filed Critical SKF AB
Priority to EP10717532A priority Critical patent/EP2422101A1/fr
Publication of EP2422101A1 publication Critical patent/EP2422101A1/fr
Withdrawn legal-status Critical Current

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
    • 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
    • F16D23/04—Arrangements for synchronisation, also for power-operated clutches with an additional friction clutch
    • F16D23/06—Arrangements for synchronisation, also for power-operated clutches with an additional friction clutch and a blocking mechanism preventing the engagement of the main clutch prior to synchronisation
    • F16D2023/0681—Double cone synchromesh clutches

Definitions

  • the invention relates to a synchronizing unit for a manual transmission, in particular of a vehicle, which has at least three cooperating synchronizer rings, which are arranged concentrically about an axis of rotation and which are arranged to be movable relative to each other in the direction of the axis of rotation, wherein one of the synchronizer rings is a synchronous outer ring having a friction surface and which is provided with positive elements for positive engagement with a transmission part, wherein one of the synchronizer rings is a synchronous intermediate ring having an inner friction surface and an outer friction surface and which is provided with positive elements for positive engagement with positive elements of the synchronous outer ring, and wherein one of the synchronizer rings is a synchronous inner ring which has an outer friction surface and which is provided with positive-locking elements for positive engagement with a transmission part.
  • Synchronizing units of this type are well known in the art.
  • the synchronous unit 1 consists of three concentrically arranged rings, namely a synchronous outer ring 2, a synchronous intermediate ring 3 and a synchronous inner ring 4.
  • the rings 2, 3, 4 are concentrically configured about the axis of rotation a and displaceable in the axial direction relative to each other.
  • a gear wheel of a gearbox in synchronous operation be brought with a shaft to make a positive coupling after adjusting the speeds of the gear wheel and shaft.
  • a first friction ring 13 is arranged between the synchronous outer ring 2 and the synchronizer intermediate ring 3.
  • a second friction ring 14 is positioned between the synchronizer intermediate ring 3 and the synchronous inner ring 4.
  • the synchronous intermediate ring 3 in the radial section of an L-shaped contour on.
  • a profile is arranged, which is suitable for positive coupling with the synchronous outer ring 2 during synchronization of the rings.
  • the invention is based on the invention to develop a synchronous unit of the generic type so that in the axial direction of a more compact design is possible. Accordingly, the axial space required by the synchronous unit can be reduced.
  • the solution to this problem by the invention is characterized in that the interlocking elements of the synchronous intermediate ring are designed as axially extending projections, wherein the projections can engage in the formed as recesses form-fitting elements of the synchronous outer ring, wherein the recesses of the synchronous outer ring of the mold correspond to the projections.
  • the projections of the synchronous intermediate ring are preferably arranged distributed equidistantly over the circumference of the synchronous intermediate ring.
  • the projections may have a substantially cuboidal shape. Between 6 and 18, more preferably between 10 and 14, projections are preferably arranged on the synchronous intermediate ring.
  • the axial extension of the projections is advantageously between 25% and 50% of the axial extent of the main body of the synchronous intermediate ring.
  • the friction surfaces of the synchronizer rings usually have a conical shape.
  • a first friction ring can be arranged, which is arranged to make contact with the friction surface of the synchronous outer ring and the outer friction surface of the synchronizer intermediate ring.
  • a second friction ring can be arranged, which is arranged to make contact with the inner friction surface of the synchronous intermediate ring and the outer friction surface of the synchronous inner ring.
  • the synchronous outer ring may have a substantially L-shaped contour in radial section;
  • the synchronous intermediate ring and the synchronous inner ring preferably have, in the radial section, a straight or only slightly curved or conical contour extending in the axial direction.
  • At least some of the synchronizer rings or friction rings are preferably made of a sliding bearing material, in particular of brass.
  • a turning operation is not required to get to the said advantageous small axial space.
  • the radial space can also be reduced. This results from the fact that space for a toothing between the synchronizer intermediate ring and the synchronous inner ring is not needed.
  • FIG. 2 is a perspective view of a half synchronizing unit according to the prior art
  • 3 is a perspective view of a half synchronizing unit according to an embodiment of the invention
  • FIG. 4 in a perspective view
  • FIG. 5 in a front view
  • FIG. 6 in section A-A according to FIG. 5
  • FIG. 7 in section B-B according to FIG. 5
  • a synchronizing unit according to another
  • FIG. 8 shows a radial section of a synchronizing unit according to a further embodiment of the invention
  • FIG. 9 shows a perspective view and FIG. 10 shows a radial section of a synchronizing unit according to a further embodiment of the invention
  • Fig. 11 is a perspective view of a synchronous outer ring
  • Fig. 12 is a perspective view of a synchronizer intermediate ring
  • Fig. 13 is a perspective view of a synchronous inner ring of a synchronizing unit according to the invention.
  • a first embodiment of the synchronous unit 1 according to the invention is outlined. Again, the three synchronizer rings 2, 3 and 4 act together, so the synchronous outer ring 2, the synchronous intermediate ring 3 and the synchronous inner ring 4. Between the synchronous outer ring 2 and the synchronizer intermediate ring 3, a first friction ring 13 is arranged, between the synchronizer intermediate ring 3 and the synchronous inner ring 4, a second Friction ring 14. The friction surface 5 of the synchronous outer ring 2 can rub against the radially outer friction surface 15 of the first friction ring 13. The radially inner friction surface 16 of the first friction ring 13 can rub against the outer friction surface of the synchronizer intermediate ring 3.
  • positive-locking elements 9 of the synchronous intermediate ring 3 are designed as extending in the axial direction of a protrusions. These projections 9 engage in the coupled state of the synchronizing unit 1 in recesses 10 of the synchronous outer ring 2 a. This embodiment will become even more apparent in the following figures.
  • both the synchronous outer ring 2 and the synchronizer inner ring 4 have respective form-locking elements 6 and 12, respectively, which are designed and provided for coupling to adjacent components of the transmission.
  • the other reference numerals correspond to the embodiment explained above.
  • the synchronous intermediate ring 3 has projections 9 (see, for this purpose, FIGS. 5 and 7) which can engage in the correspondingly shaped recesses 10 (see FIG. 5) in the synchronous outer ring 10.
  • the exemplary embodiment according to FIG. 8 illustrates a solution in which only one friction ring 13 is used. Otherwise, the structure of the synchronizing unit 1 corresponds to the solutions according to the invention described above. The same applies to the exemplary embodiment according to FIGS. 9 and 10. Here, too, it can be seen again that the projections 9 of the synchronous intermediate ring 3 can engage in the recesses 10 in the synchronous outer ring 2.
  • FIGS. 11, 12 and 13 the three interacting synchronizer rings 2, 3 and 4 (not shown, the friction rings 13, 14) are again shown in perspective.
  • the positive-locking elements 6 can be seen well, with which the synchronous outer ring 2 can be coupled to an adjacent transmission component.
  • the recesses 10 can be seen, in which the projections 9 of the synchronous intermediate ring 3 can occur by axial movement.
  • the projections 9 are preferably designed cuboid and are arranged on a ring main body of the synchronous intermediate ring 3.
  • the axial extent x of the projections 9 is preferably between 25% and 50% of the axial extent X of the ring main body.
  • the positive-locking elements 12 can be seen, which are provided for coupling to an adjacent transmission component.

Landscapes

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

Abstract

L'invention concerne une unité de synchronisation (1) pour une boîte de vitesses, en particulier d'un véhicule, qui présente au moins trois bagues de synchronisation (2, 3, 4) coopérantes, qui sont disposées de façon concentrique par rapport à un axe de rotation (a) et qui sont disposées de façon à pouvoir se déplacer les unes par rapport aux autres en direction de l'axe de rotation (a), l'une des bagues de synchronisation (2, 3, 4) étant une bague extérieure de synchronisation (2), l'une des bagues de synchronisation (2, 3, 4) étant une bague intermédiaire de synchronisation (3) et l'une des bagues de synchronisation (2, 3, 4) étant une bague intérieure de synchronisation (4). Afin d'obtenir une structure plus compacte axialement de l'unité de synchronisation, il est prévu selon l'invention que des éléments à complémentarité de forme (9) de la bague intermédiaire de synchronisation (3) sont réalisés sous forme de saillies s'étendant dans la direction de l'axe (a), lesquelles saillies (9) pouvant s'engager dans des éléments à complémentarité de forme, conçus sous forme d'évidements (10), de la bague extérieure de synchronisation (2), les évidements (10) de la bague extérieure de synchronisation (2) correspondant à la forme des saillies (9).
EP10717532A 2009-04-24 2010-04-14 Unité de synchronisation Withdrawn EP2422101A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP10717532A EP2422101A1 (fr) 2009-04-24 2010-04-14 Unité de synchronisation

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP09005754 2009-04-24
PCT/EP2010/002287 WO2010121737A1 (fr) 2009-04-24 2010-04-14 Unité de synchronisation
EP10717532A EP2422101A1 (fr) 2009-04-24 2010-04-14 Unité de synchronisation

Publications (1)

Publication Number Publication Date
EP2422101A1 true EP2422101A1 (fr) 2012-02-29

Family

ID=42288933

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10717532A Withdrawn EP2422101A1 (fr) 2009-04-24 2010-04-14 Unité de synchronisation

Country Status (2)

Country Link
EP (1) EP2422101A1 (fr)
WO (1) WO2010121737A1 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1385860A (fr) 1964-03-03 1965-01-15 Smith & Sons Ltd S Perfectionnements aux mécanismes à engrènement synchronisé, notamment pour changements de vitesses
US3286801A (en) 1964-07-17 1966-11-22 Dana Corp Synchronizing clutch with multiple conical discs
JP3146507B2 (ja) 1991-03-19 2001-03-19 トヨタ自動車株式会社 シンクロナイザリングセット
JPH05157127A (ja) 1991-12-04 1993-06-22 Toyota Motor Corp 同期噛合装置
EP1936223B1 (fr) 2006-12-22 2011-11-30 Sulzer Friction Systems (Germany) GmbH Anneau de synchronisation

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2010121737A1 *

Also Published As

Publication number Publication date
WO2010121737A1 (fr) 2010-10-28

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