WO2007074031A1 - Dispositif de synchronisation - Google Patents

Dispositif de synchronisation Download PDF

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Publication number
WO2007074031A1
WO2007074031A1 PCT/EP2006/069357 EP2006069357W WO2007074031A1 WO 2007074031 A1 WO2007074031 A1 WO 2007074031A1 EP 2006069357 W EP2006069357 W EP 2006069357W WO 2007074031 A1 WO2007074031 A1 WO 2007074031A1
Authority
WO
WIPO (PCT)
Prior art keywords
sliding sleeve
synchronizer
guide elements
synchronizing device
toothing
Prior art date
Application number
PCT/EP2006/069357
Other languages
German (de)
English (en)
Inventor
Josef Schwuger
Kristina May
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
Publication of WO2007074031A1 publication Critical patent/WO2007074031A1/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
    • F16D23/04—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
    • 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
    • F16D2023/0618—Details of blocking mechanism comprising a helical spring loaded element, e.g. ball
    • 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
    • F16D2023/0631—Sliding sleeves; Details thereof

Definitions

  • the invention relates to a device for switching at least one gear wheel by means of a sliding from a neutral position of a synchronizer in the direction of the gear wheel sliding sleeve.
  • Such devices are usually used as coupling elements in synchronizers manually switched motor vehicle transmissions. They connect a gear shaft rotationally fixed with a rotatably mounted on the transmission shaft gear.
  • the sliding sleeve is arranged concentrically to the transmission shaft, rotationally fixed and slidable in the longitudinal direction of the transmission shaft and coupled with a gear wheel on a synchronizer body
  • Sliding sleeves are available in various designs. In most cases, they have on their inner lateral surface on an inwardly facing toothing, which engages in a counter-toothing of the synchronizer body and in the switched state in a toothing of the gear wheel. On the outer circumference of the sliding sleeve a guide for a shift fork is provided with the shift fork, the sliding sleeve is moved in the longitudinal direction on the synchronizer body until it is connected to the gear or moved back to its neutral position.
  • the sliding sleeves are often axially locked by a locking lever. held ment, which is received in Synchronk ⁇ rper and usually spring-loaded acts on a recess.
  • the recess is - depending on the design of the detent - on individual or all inwardly directed teeth of the sliding sleeve, the Riegelutzähnen formed.
  • the locking element causes the sliding sleeve can only be moved axially after overcoming a defined resistance by the operator, when switching the gear, and does not move unintentionally and automatically in the axial direction.
  • two or more recesses in the longitudinal direction of the tooth are often arranged one behind the other side or independently of the aforementioned locking elements act in other synchronizers pressure pieces or locking elements on the recesses of the after inwardly directed tooth.
  • the plungers serve as an actuator for Vorsynchronmaschine. In axial displacement of the sliding sleeve, the plungers are taken through them. They initiate the process of synchronization by acting on arranged between the gear and the synchronizer synchronizer rings.
  • the recess in which the pressure piece is in the neutral position, serves to provide the user with haptic feedback when switching through the neutral position. It is not intended to fix the pressure piece firmly.
  • the sliding sleeve is moved from the neutral position or from a second end position into a first end position, wherein the sliding sleeve via the pressure piece in a first movement step, the synchronization, an adjustment of the different speeds between the gear and the synchronizer body, initiates.
  • One way to reduce the play between the sliding sleeve and synchronizer body it is to provide the guide teeth on the synchronizer body with a larger tooth thickness and to increase the guide gaps on the sliding sleeve accordingly, so that there is a larger gap width.
  • Such a design of the switching device leads to increased manufacturing and testing effort and high tooling costs.
  • Another way to reduce the tilting play is to modify the tooth base on the synchronizer body and provide a tip circle of the sliding sleeve, which has only very small tolerances. Due to this close tolerance, higher demands are placed on a method for finishing the tip diameter, which leads to higher costs.
  • the modified tooth base on the synchronizer body also requires that modifications to the machining tools are required.
  • the invention is therefore based on the object to provide a switching device in which the aforementioned disadvantages are eliminated.
  • this object is achieved according to the features of the characterizing part of claim 1, characterized in that between two successive teeth of the sliding sleeve one or more guide elements are arranged.
  • the guide elements compensate for the tolerances of the device in the installed state and thus reduce the games.
  • the guide elements are manufactured separately according to claim 4 and are thus particularly easy and inexpensive to manufacture. They are arranged in tooth spaces of the sliding sleeve distributed on the circumference of the synchronizer body.
  • the number of guide elements is limited only by the existing tooth gaps.
  • the arrangement of the guide elements in the tooth gaps around the rotation axis is possible in any way; In particular, two adjacent tooth spaces can also be provided with guide elements.
  • the components sliding sleeve, synchronizer body and coupling body have different gap widths or tooth widths.
  • the resulting from these manufacturing tolerances game is compensated according to the invention by suitably selected guide elements.
  • the guide elements are sorted depending on the gap width existing on the sliding sleeve.
  • this has the advantage that the ever-changing tolerances can be compensated by different guide elements, as always different types of guide elements are kept.
  • the provision of guide elements of different sizes is relatively inexpensive. Due to their simple geometric structure, they are easy to manufacture and sort.
  • the sliding sleeve can tilt less, because the sliding sleeve is held even when disengaging in an achskonstanten position to the synchronizer body. Furthermore, the guide elements have a positive effect on the transmission of the torque between the synchronizer body and the coupling body.
  • the synchronizer body has enlarged tooth gaps, in which engage the guide elements.
  • the enlarged tooth gaps are arranged uniformly on the circumference of the synchronizer body and can for example also be realized by the absence of a tooth.
  • the guide element is either loose or firmly inserted between the synchronizer body and sliding sleeve. Is it used firmly It can either be cohesively connected to the sliding sleeve or with the synchronizer body.
  • the material bond can be realized for example by welding or gluing.
  • the rolling elements are preferably made of steel.
  • the guide elements are arranged distributed uniformly over the circumference.
  • the use of multiple, uniformly arranged guide elements enables effective transmission of torque.
  • the guide elements are designed as rolling elements.
  • rolling elements for example, balls or cylindrical rolling elements such as needles or rollers can be used.
  • the length of the needles is shorter than the width of the sliding sleeve.
  • FIG. 2 shows a cross section of a switching device according to the invention
  • FIG. 3 shows a longitudinal section of the inventive switching device according to FIG. 2 along Ill-Ill, FIG.
  • Figure 4 is an enlarged view of the interlocking teeth of
  • Guide element 5a shows a perspective oblique view of a sliding sleeve according to the invention
  • FIG. 5b shows an oblique view of a synchronizer according to the invention
  • FIG. 6 shows an enlarged illustration of the region VI from FIG. 5a
  • FIG. 7 shows a perspective oblique view of a part of a second embodiment of the switching device according to the invention
  • Figure 8 is a perspective oblique view of a portion of a third embodiment of the switching device according to the invention.
  • 1 denotes a shaft of a gearbox for motor vehicles, on which two gear wheels 2 and 3 are freely rotatably mounted. Between these two gear wheels 2 and 3, a synchronizer 4 is arranged, via which either one of the two gear wheels 2 or 3 can be coupled to the shaft 1. In this way, the gearbox is switched to different gear ratios.
  • the synchronizing device 4 has a synchronizer body 5, which engages in rotation in a toothing 6 of the shaft. Furthermore, the synchronizer body 5 is provided at its outer periphery with an external toothing 7, in which teeth 8 engage an internal toothing of a sliding sleeve 9. In the synchronizer body 5 a pressure piece 10 is further guided with a compression spring 1 1, the element 12 receives a spherical, in the longitudinal direction on the pressure piece 10 projecting locking element. The spherical detent element 12 protrudes from the synchronizer body 5 to approximately the tip circle of the external toothing 7.
  • synchronizer rings 14 and 15 On both sides of the pressure piece 10 synchronizer rings 14 and 15 are arranged, the outside have a locking teeth 16 and 17 and inside a friction surface 18 and 19.
  • the friction surfaces 18 and 19 of the synchronizer rings 14 and 15 cooperate with correspondingly formed friction surfaces 20 and 21 which are formed on the gear wheel 3 and a non-rotatably connected to the gear wheel coupling ring 22.
  • FIGS 2, 3 and 4 show a switching device according to the invention, in which at the periphery of the sliding sleeve 9 six guide elements 26 are arranged distributed uniformly over the circumference.
  • the outer toothing 7 of the synchronizer body has a tooth space 25.
  • the tooth gap 25 is formed in this case in that a tooth has been omitted in the outer toothing 7, so that the two adjacent teeth 30, 30 'have a distance about twice as large as they would have without the tooth gap 25.
  • the teeth 8, 8 'of the sliding sleeve circumferentially always have the same distance from each other.
  • a cylindrical guide member 26 is arranged, which is positively connected to the tooth flanks 31 of the teeth 8, 8 ', 8 "and the radially outwardly facing surface 32 of the synchronizer body 5 Diameter seen in the radial direction corresponds approximately to the height of the teeth 8.
  • the teeth 8, 8 ' are thereby spaced from the synchronizer body 5 by a gap 33.
  • the gap 33 has a very small amount, which can go to zero, so that on the one hand scarcely material wear by rubbing occurs and on the other hand, a tilting is prevented by an excessive gap.
  • the gap 33 remains the same size, so that the distance between the sliding sleeve 9 to the synchronizer body 5 does not change.
  • FIGS. 5a, 5b and 6 show oblique views of a synchronizing device 4 according to the invention.
  • the positive locking or material connection of the guide elements 26 with the sliding sleeve 9 does not have to take place over the entire length of the guide element 26, but also only in FIG
  • the connection between guide element 26 and sliding sleeve 9 or synchronous body 5 mixed forms of form and material connection are also possible, for which purpose the guide element 26 is welded, for example, only at one point of contact.
  • Figures 7 and 8 show further perspective views of synchronizing devices 4 with guide elements 26.
  • the guide elements 26 are cylindrical in Figure 7 as rollers or needles 29 and in Figure 8 as balls 28.
  • the diameter of the individual guide elements need not necessarily be identical. LIST OF REFERENCE NUMBERS

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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 (1) pour commuter au moins un pignon (2, 3) au moyen d'un manchon coulissant (9) pouvant être déplacé d'une position neutre en direction du pignon (2, 3) par un élément de synchronisation (5), ce manchon comportant des dents (8) de solidarisation et des éléments de guidage (26) entre les dents (8).
PCT/EP2006/069357 2005-12-23 2006-12-06 Dispositif de synchronisation WO2007074031A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005061977.0 2005-12-23
DE200510061977 DE102005061977A1 (de) 2005-12-23 2005-12-23 Schiebemuffe

Publications (1)

Publication Number Publication Date
WO2007074031A1 true WO2007074031A1 (fr) 2007-07-05

Family

ID=37767256

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2006/069357 WO2007074031A1 (fr) 2005-12-23 2006-12-06 Dispositif de synchronisation

Country Status (2)

Country Link
DE (1) DE102005061977A1 (fr)
WO (1) WO2007074031A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008014439A1 (de) * 2008-03-14 2009-09-17 Daimler Ag Koppelvorrichtung
CN105351384A (zh) * 2015-12-18 2016-02-24 天津天海同步科技有限公司 一种防摘挡困难同步器
EP3249256B1 (fr) * 2016-05-24 2020-02-12 Kyowa Metal Works Co., Ltd Mécanisme et transmission synchroniseur
WO2018202230A1 (fr) * 2017-05-03 2018-11-08 Schaeffler Technologies AG & Co. KG Dispositif de commande

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2383149A (en) * 1940-05-15 1945-08-21 Chrysler Corp Power transmission
GB736621A (en) * 1952-03-25 1955-09-14 Porsche Ferdinand A Improvements in synchronising devices for the toothed clutches of change-speed gears
US4008624A (en) * 1975-04-23 1977-02-22 Massey-Ferguson Services N.V. Synchronizing mechanism for change speed gears

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE875113C (de) * 1938-05-31 1953-04-30 Borg Warner Synchronisiervorrichtung fuer Zahnraederwechselgetriebe
DE3714190A1 (de) * 1987-04-29 1988-11-10 Ford Werke Ag Synchronisiereinrichtung fuer wechselgetriebe, insbesondere fuer kraftfahrzeuge
DE102004054723A1 (de) * 2004-11-12 2006-05-18 Daimlerchrysler Ag Gangwechselkupplung mit Wälzkugeln

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2383149A (en) * 1940-05-15 1945-08-21 Chrysler Corp Power transmission
GB736621A (en) * 1952-03-25 1955-09-14 Porsche Ferdinand A Improvements in synchronising devices for the toothed clutches of change-speed gears
US4008624A (en) * 1975-04-23 1977-02-22 Massey-Ferguson Services N.V. Synchronizing mechanism for change speed gears

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Publication number Publication date
DE102005061977A1 (de) 2007-07-05

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