EP3094881A1 - Embrayage comportant des ressorts hélicoïdaux pour réduire l'augmentation de la force de désaccouplement sur la zone d'usure - Google Patents

Embrayage comportant des ressorts hélicoïdaux pour réduire l'augmentation de la force de désaccouplement sur la zone d'usure

Info

Publication number
EP3094881A1
EP3094881A1 EP14816120.1A EP14816120A EP3094881A1 EP 3094881 A1 EP3094881 A1 EP 3094881A1 EP 14816120 A EP14816120 A EP 14816120A EP 3094881 A1 EP3094881 A1 EP 3094881A1
Authority
EP
European Patent Office
Prior art keywords
spring
auxiliary spring
clutch
plate
auxiliary
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Withdrawn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
EP14816120.1A
Other languages
German (de)
English (en)
Inventor
Ludovic Voorspoels
Thierry Fohrer
Tony Merckling
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.)
Schaeffler Technologies AG and Co KG
Original Assignee
Schaeffler Technologies AG and 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 and Co KG filed Critical Schaeffler Technologies AG and Co KG
Publication of EP3094881A1 publication Critical patent/EP3094881A1/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Withdrawn legal-status Critical Current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
    • F16D13/00—Friction clutches
    • F16D13/58—Details
    • F16D13/583—Diaphragm-springs, e.g. Belleville
    • F16D13/585—Arrangements or details relating to the mounting or support of the diaphragm on the clutch on the clutch cover or the pressure plate
    • 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
    • F16D13/00—Friction clutches
    • F16D13/58—Details
    • F16D13/60—Clutching elements
    • 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
    • F16D13/00—Friction clutches
    • F16D13/58—Details
    • F16D13/75—Features relating to adjustment, e.g. slack adjusters
    • F16D13/757—Features relating to adjustment, e.g. slack adjusters the adjusting device being located on or inside the clutch cover, e.g. acting on the diaphragm or on the pressure plate

Definitions

  • the invention relates to a coupling for a drive train of a motor vehicle, with a cover arranged on the transmission side and an actuating member, such as a plate spring, which is designed for engaging or disengaging actuation of a pressure plate.
  • a self-adjusting coupling with a plate spring is presented, which is arranged between an adjusting ring and a sensor spring, wherein the adjusting ring has a first contact region with which this is at least when relieved plate spring in contact with the plate spring, wherein the adjusting comprises at least a second contact area with which it is to be brought into contact with the diaphragm spring when a first Ausgurweges is exceeded.
  • a support spring is disclosed in this document.
  • a clutch cover is in fact in its radially inner region in webs, which form a stop ring. With the help of centering pins of the spring ring is attached to the clutch cover.
  • the spring ring includes auxiliary springs which extend radially inwardly and axially in the direction of the stop ring. The additional springs engage with radially inner areas under plate spring tongues.
  • a friction clutch device is presented.
  • This friction clutch device is provided in particular for a drive train of a combustion engine-driven motor vehicle, comprising an axially displaceable for actuating pressure plate, which is acted upon by the force of a spring device, wherein the force of the spring device counteracts an actuating force, and a compensation spring whose force supports an operation at least partially, in which the compensating spring device has at least one compensating spring designed as a plate or lever spring in order to constructively and / or functionally improve the friction coupling device.
  • auxiliary spring is pivotally connected to the plate spring and / or the lid. Jamming is thereby avoided and ensured over the entire adjustment efficient functioning.
  • auxiliary spring is designed as a compression spring.
  • a tension spring can be used, the connection should then be designed something trickier.
  • a separate coupling piece engages the auxiliary spring for pivotally connecting the auxiliary spring to the plate spring or the cover.
  • two coupling pieces can be used on each side of the auxiliary spring to ensure a connection to the plate spring on the one hand and the lid on the other. In this way, different dimensions of disc springs and covers can be combined. A higher variability than normal is the result.
  • the coupling piece a guide portion, such as a
  • Guide pin or a guide tube which projects into the auxiliary spring at least in sections and / or has a arranged, for example, in a transverse plane of the coupling pivot, which is rotatably mounted in a hook, for example open on one side or in a hole on a bearing block.
  • the unilaterally open hook facilitates assembly, while the bearing plate mounting increases the reliability.
  • the engaging in the auxiliary spring portion avoids accidental buckling of the auxiliary spring, resulting in a more robust design.
  • the bearing plate or the hook is positively, positively and / or materially attached to the plate spring, approximately in the range of tongues formed by them, or on a cover, such as at its radially inner edge, attached / attached . It can also be used two bearing plates, wherein one bearing plate is used per plate spring tongue. Also, two hooks can be used, which are arranged together between two plate spring tongues on the radially inner edge of the lid and there protrude axially and / or radially. It is advantageous if the auxiliary spring and the actuator designed as a plate spring to each other has radially offset pivot points.
  • pivot points are offset so that they apply different and different sized forces on the disc spring and thus on the release bearing on the wear path and / or along the actuation path.
  • An advantageous embodiment is also characterized in that the auxiliary spring is inserted between the actuator and the lid, that at the beginning of the actuation path, such as in completely closed state, for example, a "Normally Closed” coupling, the force applied by the auxiliary spring counteracts the release force acting on the actuator.
  • a "Normally Closed” coupling the force applied by the auxiliary spring counteracts the release force acting on the actuator.
  • the auxiliary spring for "Normally-Open” couplings vice versa, and the release force then becomes an engagement force.
  • This adjuster can be path controlled or force controlled. So even those clutches can be realized that contain power or path controlled adjusting devices.
  • a clutch with helical, pressure-loaded auxiliary springs, which are arranged in the radial direction within a pivot bearing, and which are designed to reduce or compensate for the increase in the release force over the wear region.
  • Each of the coil springs is fixed in the radial direction on the outside of the clutch cover and in the radial direction on the inside to a corresponding plate spring tongue.
  • the attachment of the coil spring includes a guide for the coil spring. Furthermore, the attachment comprises a rotatable mounting of the coil spring both on the clutch cover, and on the plate spring tongue. The axis of rotation runs in the tangential or circumferential direction of the coupling.
  • Disc spring tongues exists to control the characteristic of the disengaging forces.
  • the system comprising three auxiliary springs offset by 120 °, is fixed in two positions, namely on the cover and on the disc spring.
  • the positions of the attachment points have an influence on the additional force of the spring.
  • the auxiliary spring has two coupling pieces, which together with the auxiliary spring form a module.
  • This module is attached between the lid and the plate spring tongues. On the lid side, the spring is fastened with one or more hooks. Plate spring side, the spring is attached with one or more tabs on the diaphragm spring tongues.
  • the module is located between two plate spring tongues.
  • the spring operates centrally between two guide tube or guide pin sections.
  • the diaphragm spring is in contact with the cover. This point is the rotation point of the diaphragm spring.
  • the release / release bearing will press on the tip of the tongue to turn the disc spring. This allows the lifting of the pressure plate.
  • the auxiliary spring presses on the plate spring tongues. In this state, this force is added to the release force. Ultimately, it counteracts the release force.
  • This force is dependent on the spring and also the installation position of the diaphragm spring. It makes sense to install the auxiliary spring so that it counteracts the release force in the engaged state, ie at the beginning of the operation. This achieves a stable position. Only later in time, when operating the diaphragm spring, the construction goes through an unstable position.
  • the point of rotation of the spring is the attachment to the lid. Since the spring, so the auxiliary spring, is fixed with tabs on the tongues of the plate spring, the movement curve of the auxiliary curve depends on three disc spring tongue positions. Likewise, the spring force of the auxiliary spring is dependent on the tongue position.
  • the auxiliary spring When transitioning from the engaged to the disengaged state, ie when disengaging the clutch, the auxiliary spring brings no force on the plate spring.
  • the three relevant points namely the point of rotation of the diaphragm spring, the rotation point of the auxiliary spring and the attachment point of the auxiliary spring on the tongues is aligned, ie viewed in alignment or on a line in longitudinal section.
  • a reduction of the release force in the disengaged state is then determine as an advantage.
  • the characteristic curve of the auxiliary power of the auxiliary spring is dependent on the Position of spring fixing on cover and spring strength / auxiliary spring characteristic.
  • the wear area can be increased.
  • FIG. 1 shows a detail of a coupling according to the invention in the region of an advantageous auxiliary spring module used between the diaphragm spring tongues and the cover,
  • Fig. 3 shows the position of the points of rotation of the plate spring and the auxiliary spring in one
  • Fig. 6 shows the disengaged state
  • Fig. 7 is an enlargement of the area VII of Fig. 4
  • Fig. 8 is an enlargement of the area VIII of Fig. 6
  • Fig. 9 is a spring characteristic of the auxiliary spring
  • a portion of a coupling 1 is shown.
  • This clutch is part of a powertrain of a motor vehicle, such as a car, a truck, a Bus or another commercial vehicle.
  • the clutch 1 may comprise a force-controlled or path-controlled adjusting device, in particular one with an adjusting ring, which cooperates with ramp-like elements.
  • a sensor spring may be included.
  • the clutch 1 has a pressure plate, not shown, which can be clamped to a clutch disc friction linings between the pressure plate and a counter-pressure element, such as a counter-pressure plate or a flywheel.
  • An auxiliary spring 2 which is part of an auxiliary spring module 3, is between a cover /
  • a hook 7 and a bearing plate 8 is provided.
  • two hooks 7 and two bearing plates 8 are provided.
  • the tongues 9 are radially inwardly projecting resilient elements of the diaphragm spring 6.
  • the auxiliary spring module 3 is provided in the circumferential direction between the two tongues 9, in a gap 10.
  • Two hooks 7 protrude from a connecting plate 1 1, which is connected in one piece to a radially inner edge 12 of the lid 4.
  • the bearing plates 8 are integral parts of the plate spring 6, as well as the hooks 7 and the connecting plate 1 1 integral components of the lid 4 are.
  • the lid 4 and the plate spring 6 are produced without cutting, about deep-drawn, sheet steel components.
  • the auxiliary spring 2 is placed on two coupling pieces 13.
  • a first end 14 of the auxiliary spring 2 is placed on a guide pin 15 of a coupling piece 13, wherein a second end 16 of the auxiliary spring 2 is placed on a guide pin 15 of the other coupling piece 13.
  • the auxiliary spring 2 is configured as a helical spring, in particular as a helical tension spring or as a helical compression spring. In the present case, an embodiment is selected as a coil spring.
  • the radially inner, arranged by a first rotation point 17 second rotation point 18 of the auxiliary spring 2 is seen in the axial direction closer to the gearbox than the engine. The two points of rotation 17 and 18 are not located in the coupled state in the same transverse plane.
  • FIG. 3 also shows, for example, a "rotation point" of the actuating element 5 embodied as a plate spring 6.
  • the force of the releaser for example due to contact with a release bearing for disengaging is symbolized by the arrow 20.
  • the direction of relaxation of the auxiliary spring 2 when disengaging is symbolized by the arrow 21.
  • the rotation of the plate spring is symbolized when disengaging.
  • pivot pin 23 in the hook 7 The pivot pin 23 of the other coupling piece 13 stuck in the bearing plates 8, namely in holes 24.
  • the bearing plates 8 are thus used to attach the auxiliary spring. 6
  • vehicle 15 may also be referred to as a guide section.

Landscapes

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

Abstract

L'invention concerne un embrayage conçu pour une chaîne cinématique d'un véhicule automobile, comportant un couvercle disposé côté boîte de vitesses et un organe d'actionnement qui est conçu pour actionner une plaque de pression par accouplement ou désaccouplement, un ressort auxiliaire étant disposé entre l'organe d'actionnement et le couvercle à des fins de transmission de force.
EP14816120.1A 2014-01-17 2014-11-25 Embrayage comportant des ressorts hélicoïdaux pour réduire l'augmentation de la force de désaccouplement sur la zone d'usure Withdrawn EP3094881A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014200793 2014-01-17
PCT/DE2014/200654 WO2015106745A1 (fr) 2014-01-17 2014-11-25 Embrayage comportant des ressorts hélicoïdaux pour réduire l'augmentation de la force de désaccouplement sur la zone d'usure

Publications (1)

Publication Number Publication Date
EP3094881A1 true EP3094881A1 (fr) 2016-11-23

Family

ID=52144325

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14816120.1A Withdrawn EP3094881A1 (fr) 2014-01-17 2014-11-25 Embrayage comportant des ressorts hélicoïdaux pour réduire l'augmentation de la force de désaccouplement sur la zone d'usure

Country Status (4)

Country Link
EP (1) EP3094881A1 (fr)
CN (1) CN105917132B (fr)
DE (1) DE112014006180A5 (fr)
WO (1) WO2015106745A1 (fr)

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2520823B1 (fr) * 1982-02-04 1986-03-28 Valeo Mecanisme d'embrayage a friction muni d'un dispositif perfectionne de limitation de course, notamment pour vehicule automobile
DE3513315A1 (de) * 1985-04-13 1986-10-16 Fichtel & Sachs Ag, 8720 Schweinfurt Membranfeder-kupplung mit einem stuetzring
FR2675865B1 (fr) * 1991-04-23 1995-06-02 Valeo Mecanisme d'embrayage a diaphragme du type tire, notamment pour vehicules automobiles et diaphragme d'embrayage.
ES2119667B1 (es) * 1994-12-24 1999-04-01 Fichtel & Sachs Ag Embrague de friccion con muelle auxiliar para asistir a la fuerza de desembragado.
DE19535712C1 (de) * 1995-09-26 1996-10-31 Fichtel & Sachs Ag Reibungskupplung im Antriebsstrang eines Kraftfahrzeuges
FR2764015B1 (fr) * 1997-05-30 1999-08-06 Valeo Mecanisme d'embrayage pour embrayage a friction
EP0882902A1 (fr) * 1997-06-06 1998-12-09 Ford-Werke Aktiengesellschaft Dispositif anti-vibration pour le diaphragme d'un embrayage à friction
JP4873336B2 (ja) * 2001-02-27 2012-02-08 シェフラー テクノロジーズ ゲゼルシャフト ミット ベシュレンクテル ハフツング ウント コンパニー コマンディートゲゼルシャフト 摩擦クラッチ
DE102009020289A1 (de) * 2009-05-07 2010-11-11 Zf Friedrichshafen Ag Druckplattenbaugruppe für eine Reibungskupplung
DE102009045980B4 (de) * 2009-10-26 2011-12-08 Zf Friedrichshafen Ag Reibungskupplung
DE102011084840A1 (de) 2011-10-20 2013-04-25 Schaeffler Technologies AG & Co. KG Reibungskupplungseinrichtung
DE102011086009A1 (de) 2011-11-09 2013-05-16 Schaeffler Technologies AG & Co. KG Selbstnachstellende Kupplung

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
None *
See also references of WO2015106745A1 *

Also Published As

Publication number Publication date
CN105917132B (zh) 2019-04-16
CN105917132A (zh) 2016-08-31
WO2015106745A1 (fr) 2015-07-23
DE112014006180A5 (de) 2016-10-06

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