GB1393285A - Clutches - Google Patents

Clutches

Info

Publication number
GB1393285A
GB1393285A GB3470372A GB3470372A GB1393285A GB 1393285 A GB1393285 A GB 1393285A GB 3470372 A GB3470372 A GB 3470372A GB 3470372 A GB3470372 A GB 3470372A GB 1393285 A GB1393285 A GB 1393285A
Authority
GB
United Kingdom
Prior art keywords
clutch
permanent magnet
winding
current
flux
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.)
Expired
Application number
GB3470372A
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.)
GKN Automotive Ltd
Original Assignee
GKN Transmissions Ltd
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 GKN Transmissions Ltd filed Critical GKN Transmissions Ltd
Priority to GB3470372A priority Critical patent/GB1393285A/en
Priority to IT69786/72A priority patent/IT965166B/en
Publication of GB1393285A publication Critical patent/GB1393285A/en
Expired 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
    • F16D27/00—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor
    • F16D27/10—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor with an electromagnet not rotating with a clutching member, i.e. without collecting rings
    • F16D27/108—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor with an electromagnet not rotating with a clutching member, i.e. without collecting rings with axially movable clutching members
    • F16D27/112—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor with an electromagnet not rotating with a clutching member, i.e. without collecting rings with axially movable clutching members with flat friction surfaces, e.g. discs
    • 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
    • F16D27/00—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor
    • F16D27/004—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor with permanent magnets combined with electromagnets
    • 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
    • F16D48/00—External control of clutches
    • F16D48/06—Control by electric or electronic means, e.g. of fluid pressure
    • F16D48/064—Control of electrically or electromagnetically actuated clutches
    • 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
    • F16D27/00—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor
    • F16D2027/002—Electric or electronic circuits relating to actuation of electromagnetic clutches
    • 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
    • F16D27/00—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor
    • F16D2027/007—Bias of an armature of an electromagnetic clutch by flexing of substantially flat springs, e.g. leaf springs
    • 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
    • F16D27/00—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor
    • F16D2027/008—Details relating to the magnetic circuit, or to the shape of the clutch parts to achieve a certain magnetic path
    • 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
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/10—System to be controlled
    • F16D2500/102—Actuator
    • F16D2500/1021—Electrical type
    • F16D2500/1022—Electromagnet
    • 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
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/10—System to be controlled
    • F16D2500/104—Clutch
    • F16D2500/10443—Clutch type
    • F16D2500/1045—Friction clutch
    • 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
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/30—Signal inputs
    • F16D2500/302—Signal inputs from the actuator
    • F16D2500/3022—Current
    • 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
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/30—Signal inputs
    • F16D2500/302—Signal inputs from the actuator
    • F16D2500/3028—Voltage
    • 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
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/30—Signal inputs
    • F16D2500/304—Signal inputs from the clutch
    • F16D2500/30404—Clutch temperature
    • 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
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/30—Signal inputs
    • F16D2500/314—Signal inputs from the user
    • F16D2500/31406—Signal inputs from the user input from pedals
    • F16D2500/31413—Clutch pedal 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
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/70—Details about the implementation of the control system
    • F16D2500/702—Look-up tables
    • F16D2500/70205—Clutch actuator
    • F16D2500/70223—Current
    • 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
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/70—Details about the implementation of the control system
    • F16D2500/704—Output parameters from the control unit; Target parameters to be controlled
    • F16D2500/70402—Actuator parameters
    • F16D2500/7041—Position

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mechanical Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Operated Clutches (AREA)

Abstract

1393285 Magnetically operated friction clutch GKN TRANSMISSIONS Ltd 25 July 1972 34703/72 Addition to 1296833 Headings F2C and F2L A vehicle multiplate friction clutch, in which a friction plate 18 is held between a presser plate 16 and a flywheel 12 to transmit drive, the clutch is engaged by a permanent magnet 35 and disengaged by energization of an electromagnet 45, which produces a flux opposing that of the permanent magnet 35. The winding of the electromagnet is designed so that the current which passes through it decreases as the flux level from the permanent magnet decreases due to temperature rise, the winding 45 here being of aluminium foil and the permanent magnet of a barium ferrite ceramic composition. The two magnets are in a housing 36, 37 fixed (adjustably) to the clutch housing 10, the flux path 21 through the clutch plates 14, 18 being defined by annular conductive portions 24, 26 and 28, 29) thereof separated by non- magnetically conductive portions (27, 30) thereof. An electronic circuit (Fig. 3, not shown), is provided wherein a variable resistor coupled to a clutch pedal controls the current through winding 45 and so regulates the engagement of the clutch, although this current may be controlled in relation to other parameters such as input or output speeds or the vehicle ignition system. The presser plate 14 and flywheel 12 are interconnected by flexible straps 15.
GB3470372A 1972-07-25 1972-07-25 Clutches Expired GB1393285A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB3470372A GB1393285A (en) 1972-07-25 1972-07-25 Clutches
IT69786/72A IT965166B (en) 1972-07-25 1972-08-31 CLUTCH CLUTCH

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3470372A GB1393285A (en) 1972-07-25 1972-07-25 Clutches

Publications (1)

Publication Number Publication Date
GB1393285A true GB1393285A (en) 1975-05-07

Family

ID=10368912

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3470372A Expired GB1393285A (en) 1972-07-25 1972-07-25 Clutches

Country Status (2)

Country Link
GB (1) GB1393285A (en)
IT (1) IT965166B (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988010376A1 (en) * 1987-06-27 1988-12-29 Zahnradfabrik Friedrichshafen Ag Clutch
EP0645550A2 (en) * 1993-08-30 1995-03-29 Dana Corporation Electromagnetic coupling disc
GB2308873A (en) * 1996-01-05 1997-07-09 Fichtel & Sachs Ag A friction clutch electromagnetic actuating device
EP0802848A1 (en) * 1995-01-09 1997-10-29 Diamant Boart, Inc. Self propelled saw
GB2442877B (en) * 2006-10-13 2011-08-03 Ricardo Uk Ltd Clutches
GB2478222A (en) * 2006-10-13 2011-08-31 Ricardo Uk Ltd Clutch cooling

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5004086A (en) * 1987-06-27 1991-04-02 Zahnradfabrik Friedrichshafen Ag Clutch assembly for a motor vehicle
WO1988010376A1 (en) * 1987-06-27 1988-12-29 Zahnradfabrik Friedrichshafen Ag Clutch
EP0645550A2 (en) * 1993-08-30 1995-03-29 Dana Corporation Electromagnetic coupling disc
EP0645550A3 (en) * 1993-08-30 1995-06-28 Dana Corp Electromagnetic coupling disc.
US5445259A (en) * 1993-08-30 1995-08-29 Dana Corporation High strength electromagnetic coupling disc
EP0802848A1 (en) * 1995-01-09 1997-10-29 Diamant Boart, Inc. Self propelled saw
EP0802848A4 (en) * 1995-01-09 2002-10-30 Diamant Boart Inc Self propelled saw
ES2116943A1 (en) * 1996-01-05 1998-07-16 Fichtel & Sachs Ag A friction clutch electromagnetic actuating device
FR2743401A1 (en) * 1996-01-05 1997-07-11 Fichtel & Sachs Ag FRICTION CLUTCH HAVING AN ELEMENT OF MANEUVER
GB2308873B (en) * 1996-01-05 1999-09-01 Fichtel & Sachs Ag Friction clutch actuating means
GB2308873A (en) * 1996-01-05 1997-07-09 Fichtel & Sachs Ag A friction clutch electromagnetic actuating device
GB2442877B (en) * 2006-10-13 2011-08-03 Ricardo Uk Ltd Clutches
GB2478222A (en) * 2006-10-13 2011-08-31 Ricardo Uk Ltd Clutch cooling
GB2478222B (en) * 2006-10-13 2011-10-12 Ricardo Uk Ltd Clutches
US8333272B2 (en) 2006-10-13 2012-12-18 Ricardo Uk Ltd Clutches
US8844697B2 (en) 2006-10-13 2014-09-30 Ricardo Uk Ltd Clutches

Also Published As

Publication number Publication date
IT965166B (en) 1974-01-31

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee