WO1991005175A1 - Ensembles d'accouplements a friction - Google Patents

Ensembles d'accouplements a friction Download PDF

Info

Publication number
WO1991005175A1
WO1991005175A1 PCT/GB1990/001490 GB9001490W WO9105175A1 WO 1991005175 A1 WO1991005175 A1 WO 1991005175A1 GB 9001490 W GB9001490 W GB 9001490W WO 9105175 A1 WO9105175 A1 WO 9105175A1
Authority
WO
WIPO (PCT)
Prior art keywords
flywheel
cover
assembly
clutch
bolt
Prior art date
Application number
PCT/GB1990/001490
Other languages
English (en)
Inventor
Graham John Shirley
Original Assignee
Automotive Products Plc
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 Automotive Products Plc filed Critical Automotive Products Plc
Publication of WO1991005175A1 publication Critical patent/WO1991005175A1/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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
    • F16F15/12—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon
    • F16F15/1207—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon characterised by the supporting arrangement of the damper unit
    • 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
    • F16D13/22—Friction clutches with axially-movable clutching members
    • F16D13/38—Friction clutches with axially-movable clutching members with flat clutching surfaces, e.g. discs
    • F16D13/46—Friction clutches with axially-movable clutching members with flat clutching surfaces, e.g. discs in which two axially-movable members, of which one is attached to the driving side and the other to the driven side, are pressed from one side towards an axially-located member
    • F16D13/48—Friction clutches with axially-movable clutching members with flat clutching surfaces, e.g. discs in which two axially-movable members, of which one is attached to the driving side and the other to the driven side, are pressed from one side towards an axially-located member with means for increasing the effective force between the actuating sleeve or equivalent member and the pressure member
    • F16D13/50—Friction clutches with axially-movable clutching members with flat clutching surfaces, e.g. discs in which two axially-movable members, of which one is attached to the driving side and the other to the driven side, are pressed from one side towards an axially-located member with means for increasing the effective force between the actuating sleeve or equivalent member and the pressure member in which the clutching pressure is produced by springs only
    • F16D13/505—Devices located between the flywheel and the driven disc, and biassing the driven disc away from the flywheel towards the disengaged position
    • 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
    • F16D25/00—Fluid-actuated clutches
    • F16D25/08—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member
    • F16D25/082—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member the line of action of the fluid-actuated members co-inciding with the axis of rotation
    • F16D25/087—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member the line of action of the fluid-actuated members co-inciding with the axis of rotation the clutch being actuated by the fluid-actuated member via a diaphragm spring or an equivalent array of levers

Definitions

  • This invention relates to friction clutch assemblies, for motor vehicles.
  • a driven plate/ rotationally fast with the input shaft of a gearbox/ is sandwiched between a flywheel on the engine crankshaft and a pressure plate.
  • the pressure plate is usually mounted in a clutch cover assembly/ and the cover assembly is in turn mounted on the flywheel.
  • the pressure plate is rotationally fast with a cover and the flywheel/ and is biased away from the cover by spring means to trap the driven plate between itself and the flywheel.
  • Drive straps hold the pressure plate rotationally fast with the cover and allow the pressure plate to move axially so as to enable the driven plate to be released or clamped between the flywheel and pressure plate as required.
  • flywheel In a typical motor vehicle the flywheel is bolted on to one end of the engine crank shaft by equiangularly spaced bolts arranged on a pitch circle ' / usually four bolts.
  • flywheel is generally attached to the crankshaft separately from the clutch so that the clutch has to be aligned with the flywheel already assembled on the vehicle engine. Furthermore the flywheel and clutch assembly are typically manufactured separately and dynamically balanced separately.
  • the present invention provides a clutch assembly including flywheel/ which can be mounted to a crankshaft as an assembly.
  • the invention also provides a cover/ and clutch release mechanism as a single assembly.
  • a friction clutch assembly for an internal combustion engine and which includes a flywheel; a driven plate adjacent the flywheel; a coaxial annular clutch cover assembly mounted on one side of the flywheel to envelop the driven plate and which includes a cover/ a pressure plate/ and spring means urging the pressure plate ' towards the flywheel to clamp the driven plate therebetween/
  • the flywheel has means for making it rotationally fast with the crankshaft of said engine including a coaxial centre bolt located in an aperture at the axis of rotation of the flywheel/ said bolt being accessible by a tool insertable through both the clutch cover assembly and driven plate for attachment and removal of the flywheel to and from the crankshaft.
  • the bolt head incorporates a bearing race toaccomodate the end portion of a gearbox input shaft.
  • this assembly allows the flywheel to be mounted onto the crankshaft after assembly of the clutch cover assembly/ and driven plate to the flywheel/ then the complete assembly can be balanced as a unit/ without any further probability of becoming unbalanced/ and the flywheel and driven plate can be accurately aligned before mounting on the crankshaft.
  • a clutch cover assembly comprising a clutch cover having a central opening therein/ a bearing race mounted to the cover in the central opening/ and an annular clutch release means mounted within the bearing race.
  • the clutch release means comprises an outer cylindrical annular housing mounted to the bearing race, and an inner cylindrical sleeve telescopically mounted within the outer cylindrical housing.
  • the outer housing is part of an annular hydraulic slave cylinder/ and the inner cylindrical sleeve is an annular piston operably located in the slave cylinder
  • Figure 1 is a cross-section of a typical friction clutch assembly showing the assembly mounted on a vehicle crankshaft.
  • Figure 1 illustrates a bell housing 10 on a vehicle gearbox/ and which houses a motor vehicle friction clutch assembly 11 comprising a flywheel 12/ a driven plate 13/ and an annular cover cover assembly 14.
  • the cover assembly 14 comprises an annular cover 15 which is secured to one side of the flywheel 12/ a pressure plate 22 located coaxially within the cover 15/ and a coaxial diaphragm spring 16 located between the cover and the pressure plate to bias the pressure plate 22 towards the flywheel to clamp the driven plate 13 therebetween.
  • the cover 15 comprises a cylindrical sidewall having a radially outwardly projecting flange 17 at its open end and a radially inwardly projecting flange 18 at the other axial end.
  • the outwardly projecting flange 17 has a plurality of holes 26 therein whereby the cover i attached by bolts (not shown) to the flywheel 12.
  • Th inwardly projecting flange 18 has a plurality of tabs 23 on its radially inner periphery whereby the diaphrag spring 16 is attahced to the cover.
  • the spring 16 is a frustoconical plate spring coned away from the pressure plate 22 and having a radially outer continuous annular portion 27 with a plurality of spaced radially inwardly extending fingers 28 projecting from the radially inner periphery of the annular portion 27.
  • the spring 16 is attached to the cover 15 by the tabs 23 on the cover/ extending through respective apertures at the base of the fingers 28 and being bent around the continuous portion 27 of the spring to clinch the spring to the cover.
  • a pair of coaxial fulcrum rings 24 and 25 are located one on each side of the diaphragm spring and are located against the radially outer surface of the tabs 23 prior to the tabs being bent around the spring 16.
  • the outer margin 27 of the spring 16 acts against the pressure plate 22.
  • the hub 19 of the driven plate 13 is fitted onto a gearbox input shaft 31 by means of splines so that the driven plate is rotationally f.ast with the shaft.
  • a release load is applied to the radially inner ends of the spring fingers 28/ via a clutch release bearing 32 to move the inner ends of the fingers towards the flywheel 12/ causing the outer annular portion 27 of the spring to pivot about the fulcrum rings 23, 24, and move away from the flywheel 12.
  • the clutch is re-engaged the reverse operation takes place.
  • the pressure plate 22 has an annular cast iron body with the friction surface on one axial side for engagement with the driven plate 13 and is made rotationally fast with the cover 15 by three circumferentially spaced sets of drive straps 34 which extend between the cover and lugs on the outer periphery of the pressure plate 22.
  • the drive straps 34 allow for axial movement of the pressure plate 22 relatative to the cover 15 whilst holding the two rotationally fast.
  • the flywheel 12 is mounted on the end plate 35 of a crankshaft of an internal combustion engine.
  • the crankshaft end plate 35 has a coaxial threaded' hole 36 therein to receive a center bolt 37 which passes through a center hole 40 in the flywheel whereby the flywheel is attached to the.crankshaft.
  • he hole 40 is located at the axis of rotation of the flywheel and clutch.
  • the center bolt 37 has a circular head 38 which is recessed into th flywheel.
  • the bolt 37 includes a bearing race 39 adapted to recieve and rotationally support the end portion of the gearbox input shaft 31/ and a hollow center 41 having a coaxial bore adapted to receive a tool/ for example 'an alien key' so that the bolt 37 can be screwed into the threaded hole 36 in the crankshaft end plate 35.
  • a plurality of equiangularly spaced pins 42/ preferably four pins, are located in holes in the flywheel on a pitch circle around the bolt hole 40 and locate in aligned holes in the crankshaft end plate 35 to prevent rotation of the flywheel relative to the crankshaft.
  • the cover 15 on its radially inwardly projecting flange 18 has a tubular housing 45, preferably formed integrally with the cover 15, and which supports in its open mouth via a bearing race 46, an 'annular clutch release mechanism arranged in use concentrically with • the gear box input shaft 31.
  • the annular clutch release mechanism 47 can be operated by cable means or preferably by hydraulic means, in which case the release mechanism comprises an annular hydraulic slave cylinder 47.
  • the slave cylinder 47 has an inner sleeve surrounding the gear box input shaft 31 on the clutch release bearing 32 is mounted against the piston 48 so that activation of the slave cylinder 47 operates the spring fingers 28 to release or clamp the driven plate 13.
  • the slave cylinder 47 is held stationary relative to the bell housing 10 by a hydraulic connection 49 and the clutch assembly 11 rotates relative thereto through the bearing races 32 and 46.
  • the bolt 37 is placed into the hole 40 in the flywheel 12, the driven plate 13/ is then located in position against the flywheel 12 and is accurately aligned to be coaxial with the flywheel/ and the cover assembly 14 is then bolted to the flywheel 12 with the driven plate held in alignment.
  • the complete assembly including the flywheel can then be rotationally balanced as an assembly.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Mechanical Operated Clutches (AREA)

Abstract

Un ensemble d'accouplement à friction destiné à un moteur à combustion interne comprend un volant (12), une plaque menée (13) contiguë au volant, et un ensemble coaxial à plateau de fermeture annulaire (14) monté sur le volant pour serrer la plaque menée contre le volant. Le volant possède un moyen (42) qui le rend solidaire en rotation du vilebrequin (35) dudit moteur, ledit moteur comprenant un boulon central coaxial (37) situé dans un orifice (40) sur l'axe de rotation du volant. Le boulon (37) est accessible au moyen d'un outil pouvant être introduit à travers à la fois l'ensemble à plateau de fermeture (14) et la plaque menée (13) afin de fixer le volant (12) au vilebrequin (35), ou de l'en détacher, et la tête du boulon (38) comprend une bague de roulement (39) servant à soutenir la portion terminale de l'arbre primaire (31) d'une boîte de vitesses.
PCT/GB1990/001490 1989-10-05 1990-09-28 Ensembles d'accouplements a friction WO1991005175A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8922436.4 1989-10-05
GB8922436A GB2237077B (en) 1989-10-05 1989-10-05 Friction clutch assemblies

Publications (1)

Publication Number Publication Date
WO1991005175A1 true WO1991005175A1 (fr) 1991-04-18

Family

ID=10664091

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1990/001490 WO1991005175A1 (fr) 1989-10-05 1990-09-28 Ensembles d'accouplements a friction

Country Status (2)

Country Link
GB (2) GB2237077B (fr)
WO (1) WO1991005175A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2706959A1 (fr) * 1993-03-26 1994-12-30 Fichtel & Sachs Ag

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2296959B (en) * 1993-03-26 1997-10-08 Fichtel & Sachs Ag Means for attaching a clutch assembly to a crankshaft
ES2119642B1 (es) * 1994-07-12 1999-04-01 Fichtel & Sachs Ag Embrague de friccion

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2406735A1 (de) * 1974-02-13 1975-08-28 Skf Kugellagerfabriken Gmbh Reibungskupplung, insbesondere fuer kraftfahrzeuge
FR2517394A1 (fr) * 1981-12-02 1983-06-03 Peugeot Embrayage a disque de friction
FR2526104A1 (fr) * 1982-04-29 1983-11-04 Valeo Embrayage, notamment pour vehicule automobile, a vis de fixation centrale
DE3414648A1 (de) * 1984-04-18 1985-10-31 Adam Opel AG, 6090 Rüsselsheim Hydraulisch gesteuerte reibungskupplung, insbesondere einscheibentrockenkupplung, vornehmlich fuer kraftfahrzeuge
US4600092A (en) * 1982-04-29 1986-07-15 Valeo Clutch cover and flywheel securement assembly
EP0203735A1 (fr) * 1985-05-24 1986-12-03 Automotive Products Public Limited Company Ensemble de palier de débrayage
US4650051A (en) * 1982-04-29 1987-03-17 Valeo Clutch with reaction plate in two parts, especially for motor vehicles

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB319571A (en) * 1929-02-04 1929-09-26 Alfred Abrahams Improvements in and connected with power transmission clutches for use with motor road vehicles
GB483938A (en) * 1936-02-15 1938-04-28 Ewald Hering Improvements relating to double clutches especially for power vehicles
GB730118A (en) * 1952-05-01 1955-05-18 Singer Mfg Co Air cooled electric clutch-brake driving device
GB1060165A (en) * 1964-08-25 1967-03-01 Automotive Prod Co Ltd Improvements in and relating to plate type friction clutches
GB1322315A (en) * 1971-03-08 1973-07-04 Automotive Prod Co Ltd Friction clutch installations for vehicles
BE788161A (fr) * 1971-09-10 1973-02-28 Towmotor Corp Carter d'un embrayage a fluide
IT956976B (it) * 1972-06-28 1973-10-10 Vernasca C Dispositivo per azionare gli innesti a frizio ne di autoveicoli
US4102446A (en) * 1974-01-22 1978-07-25 Societe Anonyme Francaise Du Ferodo Hydraulically operated clutch
GB1544814A (en) * 1975-11-21 1979-04-25 Automotive Prod Co Ltd Release bearing assemblies for vehicle clutches
CA1100425A (fr) * 1977-12-14 1981-05-05 Edward F. Labuda Traduction non-disponible
DE3535439A1 (de) * 1985-10-04 1987-04-09 Fichtel & Sachs Ag Antriebsanordnung, insbesondere fuer ein kraftfahrzeug

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2406735A1 (de) * 1974-02-13 1975-08-28 Skf Kugellagerfabriken Gmbh Reibungskupplung, insbesondere fuer kraftfahrzeuge
FR2517394A1 (fr) * 1981-12-02 1983-06-03 Peugeot Embrayage a disque de friction
FR2526104A1 (fr) * 1982-04-29 1983-11-04 Valeo Embrayage, notamment pour vehicule automobile, a vis de fixation centrale
US4600092A (en) * 1982-04-29 1986-07-15 Valeo Clutch cover and flywheel securement assembly
US4650051A (en) * 1982-04-29 1987-03-17 Valeo Clutch with reaction plate in two parts, especially for motor vehicles
DE3414648A1 (de) * 1984-04-18 1985-10-31 Adam Opel AG, 6090 Rüsselsheim Hydraulisch gesteuerte reibungskupplung, insbesondere einscheibentrockenkupplung, vornehmlich fuer kraftfahrzeuge
EP0203735A1 (fr) * 1985-05-24 1986-12-03 Automotive Products Public Limited Company Ensemble de palier de débrayage

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2706959A1 (fr) * 1993-03-26 1994-12-30 Fichtel & Sachs Ag
ES2109837A1 (es) * 1993-03-26 1998-01-16 Fichtel & Sachs Ag Disposicion para la sujecion de una unidad constructiva de embrague a un cigueñal.

Also Published As

Publication number Publication date
GB2237077A (en) 1991-04-24
GB2236561A (en) 1991-04-10
GB2237077B (en) 1993-09-15
GB2236561B (en) 1994-01-19
GB9021282D0 (en) 1990-11-14
GB8922436D0 (en) 1989-11-22

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