GB634945A - Improvements in electro-magnetic friction clutches - Google Patents

Improvements in electro-magnetic friction clutches

Info

Publication number
GB634945A
GB634945A GB24335/47A GB2433547A GB634945A GB 634945 A GB634945 A GB 634945A GB 24335/47 A GB24335/47 A GB 24335/47A GB 2433547 A GB2433547 A GB 2433547A GB 634945 A GB634945 A GB 634945A
Authority
GB
United Kingdom
Prior art keywords
magnetic
disc
secured
clutch
torque
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
GB24335/47A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB634945A publication Critical patent/GB634945A/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
    • F16D27/02—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor with electromagnets incorporated in the clutch, i.e. with collecting rings
    • F16D27/04—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor with electromagnets incorporated in the clutch, i.e. with collecting rings with axially-movable friction surfaces
    • F16D27/06—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor with electromagnets incorporated in the clutch, i.e. with collecting rings with axially-movable friction surfaces with friction surfaces arranged within the flux
    • 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
    • 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
    • F16D2500/306—Signal inputs from the engine
    • F16D2500/3061—Engine inlet air flow rate
    • 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
    • F16D2500/70418—Current

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mechanical Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

634,945. Clutches. LAVAUD, R. S. DE. Sept. 3, 1947, No. 24335. Convention date, Sept. 14, 1946. [Class 80 (ii)] An electromagnetically operated friction clutch comprises a disc 10 secured to the driven shaft 12 which is adapted to be engaged between a magnet 4, secured to a flywheel 1 on a driving shaft 3 and energized by a winding 2, and an armature 6 secured for rotation with, but adapted for axial movement on, a ring 5 secured to the flywheel 1. The disc 10 is of non-magnetic metal and is provided with bars 10a of magnetic metal whilst the adjacent faces of the magnet 4 and armature 6 are coated with a layer 20 of non-magnetic material. During the period of slipping of the clutch induced currents are created in the non-magnetic layers 20 which react on the magnetic field to produce an electrical driving torque on the disc 10 in addition to the frictional torque. The friction surfaces may be further coated with a thin layer of hard metal such as chromium to obviate wear. Instead of a single disc 10 a plurality of such discs may be provided together with a corresponding number of additional armature rings arranged between these discs. A cover plate 14 secured to the ring 5 co-operates with a plate 15 on the disc 10 to provide an oil retaining housing for the clutch to keep the friction surfaces lubricated. The exitation of the magnet winding 2 may be controlled in accordance with the motor torque so that the value of the clutch torque which can be transmitted is limited thereto and torque fluctuations can be readily absorbed by slipping at any value of the motor torque. This may be effected by the use of a variableresistance or rheostat in the magnet winding circuit actuated by the vacuum in the engine manifold or by the pressure of the exhaust gases or by both. The Specification as open to inspection under Sect. 91 comprises also the use of a driven clutch plate 10 of magnetic sheet steel which is radially slotted to provide a series of radial magnetic bars, or a plain magnetic steel disc may be used. This subject-matter does not appear in the Specification as accepted.
GB24335/47A 1946-09-14 1947-09-03 Improvements in electro-magnetic friction clutches Expired GB634945A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR634945X 1946-09-14

Publications (1)

Publication Number Publication Date
GB634945A true GB634945A (en) 1950-03-29

Family

ID=8993937

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24335/47A Expired GB634945A (en) 1946-09-14 1947-09-03 Improvements in electro-magnetic friction clutches

Country Status (1)

Country Link
GB (1) GB634945A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2145495A (en) * 1983-08-23 1985-03-27 Fichtel & Sachs Ag Method and apparatus for damping torsional vibrations in a combustion engine - gear box unit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2145495A (en) * 1983-08-23 1985-03-27 Fichtel & Sachs Ag Method and apparatus for damping torsional vibrations in a combustion engine - gear box unit

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