US3715547A - An electrical switch having an obliquely orientated roller contact - Google Patents

An electrical switch having an obliquely orientated roller contact Download PDF

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Publication number
US3715547A
US3715547A US00129454A US3715547DA US3715547A US 3715547 A US3715547 A US 3715547A US 00129454 A US00129454 A US 00129454A US 3715547D A US3715547D A US 3715547DA US 3715547 A US3715547 A US 3715547A
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US
United States
Prior art keywords
roller
base
rotor
fixed contacts
pair
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 - Lifetime
Application number
US00129454A
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English (en)
Inventor
S Tregurtha
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.)
ZF International UK Ltd
Original Assignee
Lucas Industries Ltd
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Filing date
Publication date
Application filed by Lucas Industries Ltd filed Critical Lucas Industries Ltd
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Publication of US3715547A publication Critical patent/US3715547A/en
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/16—Contacts characterised by the manner in which co-operating contacts engage by abutting by rolling; by wrapping; Roller or ball contacts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
    • B60Q1/34—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating change of drive direction
    • B60Q1/40—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating change of drive direction having mechanical, electric or electronic automatic return to inoperative position
    • B60Q1/42—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating change of drive direction having mechanical, electric or electronic automatic return to inoperative position having mechanical automatic return to inoperative position due to steering-wheel position, e.g. with roller wheel control
    • B60Q1/425—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating change of drive direction having mechanical, electric or electronic automatic return to inoperative position having mechanical automatic return to inoperative position due to steering-wheel position, e.g. with roller wheel control using a latching element for resetting a switching element

Definitions

  • An electrical switch comprises a base, a cover extend- [21] Appl. N0.: 129,454 ing over the base and a rotor mounted between the base and the cover for angular movement relative thereto.
  • a conductive roller is carried by the rotor and [30] Forelgn Apphcatlon Priority Data defines the movable contact of the switch, resilient May 16, 1970 Great Britain ..23,833/70 means urging the roller into contact with the base.
  • pair of fixed contacts are carried by the base and are [52] U.S. Cl. ..200/166 BB, 200/11 1,200/6127 engageable by the roller in a predetermined angular [51] Int. Cl. ..H01h 9/00 position of the roller.
  • the roller is carried by the rotor [58] Field of Search ..200/6l .27-61.38, so that the rotational axis of the roller is parallel with 200/166 BB, 166 BH, 11 J the base but is inclined at an angle to an imaginary line joining the axis of movement of the rotor to the [56] References Cited center of gravity of the roller, whereby during angular movement of the roller over the air of fixed contacts UNITED STATES PATENTS the surface of the roller undergo es sliding movement 2,430,215 11/1947 Doucette ..200 11 K as well, as rotational ent relative to the fixed 2,629,787 2/ 1953 contacts and so provides a cleaning action to the con- 3,175,052 3/1965 tactsl 3,534,189 10/1970 Wilkinson ..200/61.34 3,585,544 6/1971 Cleaveland et a1.
  • An electrical switch comprises a base, a cover extending over the base, a rotor mounted between the base and the cover for angular movement relative thereto, a conductive roller carried by the rotor and defining the movable contact of the switch, resilient means urging said roller into contact with the base, and a pair of fixed contacts carried by the base and engageable by said roller in a predetermined angular position of the rotor, said roller being carried by the rotor so that the rotational axis of the roller is parallel with the base but is inclined at an angle to an imaginary line joining-the axis of movement of the rotor to the center of gravity of the roller, whereby during angular movement of the roller over said pair of fixed contacts the surface of the roller undergoes sliding movement as well as rotational movement relative to the fixed contacts and so provides a cleaning action to the contacts.
  • a further pair of fixed contacts are carried by the base and are engageable by said roller in a further predetermined angular position of the rotor, said pair of fixed contacts and said further pair of fixed contacts being so positioned on the base that the portions of the surface of the roller engaged by the pair of fixed contacts respectively in said predetermined angu lar position of the rotor are axially spaced from the portions of the surface of the roller engaged by the further pair of fixed contacts respectively in said further predetermined angular position of the rotor.
  • FIG. l' is a sectional side view of a switch according to one example of the invention.
  • FIG. 2 is a plan view of the switch shown in FIG. 1 with the cover plate removed for the sake of clarity,
  • FIG. 3 is a diagrammatic illustration of the operation of the switch shown in FIG. 1, and
  • FIG. 4 is a diagrammatic illustration of the operation of a switch according to a second example of the inventron.
  • the switch includes a moulded synthetic resin base 11 and a cover plate 12 supported above the base 11.
  • a rotor 13, formed from a phenolic material, is positioned between the cover plate 12 and the base 11 and is formed with an integral pivot post 14 which is received in an aperture in the cover plate 12 so as to journal the rotor 13 for angular movement relative to the base 11 and the cover plate 12 about the pivot post 14.
  • Mounted in respective bores 15 in the rotor 13 are a pair of conductive rollers 16, each of the rollers 16 being urged into engagement with the base 11 by a helical compression spring 17 received in the respective bore 15.
  • the rollers 16 each define a movable contact of the switch and a pair of contact blades 18,19 received in respective apertures (not shown) in the base 11 are positioned adjacent each of the rollers 16 so as to be engageable by their respective rollers during angular movement of the rotor 13.
  • the pairs of contact blades 18,19 define the fixed contacts of the switch and are arranged so that the rotor 13 is movable between an inoperative position in which no circuits are made, a first operative position in which one of the rollers 16 bridges one pair of fixed contacts 18 19, and a second operative position in which the other roller 16 bridges the other pair of fixed contacts 18, 19'.
  • Detent means (not shown) are provided for releasably retaining the rotor in its inoperative position and the first and second operative positions. Further the rotor 13 supports an operating lever 21 which at one end extends from the rotor 13, the portion of the lever 21 extending from the rotor 13 being gripped, in use, to impart movement to the rotor.
  • the switch described above is a direction indicator switch and the base 11 and the cover plate 12 are provided with aligned holes 22,23 respectively so that the switch can be mounted on the steering column of a road vehicle;
  • a bearing bush 24 mounted on the steering column for rotation therewith is received in the holes 23, in the cover plate l2,the bush 24 being provided on its outside surface with an integral striker 25.
  • the rotor 13 carries a pair of flexible cancelling arms 26 arranged on opposite sides respectively of the post 14 so that, in use, when the rotor 13 is moved into an operative position one of the cancelling arms 26 is moved into the path of movement of the striker 25.
  • Each of the arms 26 is arranged so that, in use, when engaged by the striker 25 during movement of the striker in one angular direction with respect to the arm, the arm is flexed laterally to allow the striker to move past the arm.
  • the striker is moving in the opposite angular direction with respect to the arm lateral flexing of the arm is resisted by an abutment 26a on the rotor 13 so that the striker applies a force to the rotor to return the rotor from its respective operative position back to its inoperative position, unless the rotor 13 is held, whereby the arm can bend along its length to allow the striker to move past the arm.
  • the switch includes a further set of electrical contacts 27, the operating lever 21 being capable of angular movement about an axis at right anglesto the rotational axis of the rotor 13 so as to operate respective pairs of the further set of contacts 27 which would normally control the headlamps of the vehicle.
  • the rollers 16 are so positioned in their respective bores 15 in the rotor 13 that the rotational axis of each roller 16, although parallel to the base 11, is inclined at an angle to an imaginary line joining the axis of angular movement of the rotor 13 generally shown at 28, and the center of gravity of the respective roller 16, generally shown at 29.
  • the frictional force between each roller 16 and the base 11 does not act directly at right angles to the axis of rotation of the roller.
  • each roller 16 is arranged to be so inclined to the axis of rotation of the respective roller that during angular movement of the rotor relative to the base the surface of the roller not only rotates but also slides with respect to the base.
  • a rubbing action is applied to the surfaces of the contact blades by the roller 16 so that the surfaces of the contacts and the roller are clean during operating of the switch.
  • a roller 31 is carried by an insulating rotor (not shown) and, as in the previous example, is arranged so that the rotational axis of. the roller is inclined at an angle to an imaginary line joining the axis of angular movement of the rotor, generally shown at 32, and the center of gravity of the roller, generally shown at 33.
  • the roller 31 is arranged to engage a first pair of contact pins 34 in a first angular position of the rotor and engage a second pair of contact pins 35 in a second angular position of the rotor.
  • the contact pins 34,35 are arranged so that the portions of the surface of the rollers 31 which engage the contact pins 34 in the first angular position of the rotor, and which are shown at 36, are axially separated from the portions of the roller 31 which engage the contact pins 35 in the second angular position of the rotor, and which are shown at 37.
  • An electrical switch comprising a base, a cover extending over the base, a rotor mounted between the base and the cover, for angular movement relative thereto, a conductive roller mounted in a bore in the rotor and defining the movable contact of the switch, resilient spring means also disposed in said bore for urging said roller into contact with the base, and a pair of fixed contacts carried by the base and engageable by said roller in a predetermined angular position of the rotor, said bore in the rotor and said roller mounted therein being positioned and aligned so that the rotational axis of the roller is parallel with the base but is inclined at an angle to an imaginary line joining the axis of movement of the rotor to the center of gravity of the roller, whereby during angular movement of the roller over said pair of fixed contacts the surface of the roller undergoes sliding movement as well as rotational movement relative to the fixed contacts and so provides a cleaning action to the contacts.
  • An electrical switch comprising a base, a cover extending over the base, a rotor mounted between the base and the cover for angular movement relative thereto, a conductive roller carried by the rotor and defining the moveable contact of the switch, resilient means ur ing said roller into contact with the base, and a pair of lxed contacts carried by the base and engageable by said roller in a predetermined angular position of the rotor, said roller being carried by the rotor so that the rotational axis of the roller is parallel with the base but is inclined at an angle to an imaginary line joining the axis of movement of the rotor to the center of gravity of the roller, whereby during angular movement of the roller over said pair of fixed contacts the surface of the roller undergoes sliding movement as well as rotational movement relative to the fixed contacts and so provides a cleaning action to the contacts, and wherein a further pair of fixed contacts are carried by the base and are engageable by said roller in a further predetermined angular position of the rotor, said

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Binders And Loading Units For Sheaves (AREA)
  • Portable Nailing Machines And Staplers (AREA)
US00129454A 1970-05-16 1971-03-30 An electrical switch having an obliquely orientated roller contact Expired - Lifetime US3715547A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2383370A GB1338082A (en) 1970-05-16 1970-05-16 Electrical switches

Publications (1)

Publication Number Publication Date
US3715547A true US3715547A (en) 1973-02-06

Family

ID=10202054

Family Applications (1)

Application Number Title Priority Date Filing Date
US00129454A Expired - Lifetime US3715547A (en) 1970-05-16 1971-03-30 An electrical switch having an obliquely orientated roller contact

Country Status (9)

Country Link
US (1) US3715547A (de)
JP (1) JPS466678A (de)
CS (1) CS166277B2 (de)
DE (1) DE2123502C3 (de)
ES (1) ES168961Y (de)
FR (1) FR2091513A5 (de)
GB (1) GB1338082A (de)
PL (1) PL71120B1 (de)
SU (1) SU473384A3 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3329353A1 (de) * 1983-08-13 1985-02-28 Vsesojuznyj naučno-issledovatel'skij proektno-konstruktorskij i technologičeskij institut transformatorostroenija, Zaporožie Vorrichtung zur regelung der elektrischen spannung
DE3630464A1 (de) * 1986-09-06 1988-03-10 Reinhausen Maschf Scheubeck Kontaktanordnung fuer lastwaehler von stufentransformatoren
IT1276435B1 (it) * 1995-06-23 1997-10-31 Bitron Spa Interruttore elettrico con contatto mobile autopulente

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2430215A (en) * 1945-04-25 1947-11-04 Daven Company Contact switch
US2629787A (en) * 1948-11-08 1953-02-24 Daven Company Electrical switch
US3175052A (en) * 1960-07-25 1965-03-23 Licentia Gmbh Multiple-position rotary stepping switch having an obliquely oriented contact bridge
CA767769A (en) * 1967-09-19 L. Brown William Rotary switch assembly
US3534189A (en) * 1967-12-20 1970-10-13 Lucas Industries Ltd Direction indicator switches for road vehicles
US3585544A (en) * 1969-09-30 1971-06-15 Westinghouse Electric Corp Switch having magnetic latching means

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH333690A (fr) * 1957-02-15 1958-10-31 Vogel & Cie P Rhéostat
FR1199719A (fr) * 1958-06-19 1959-12-16 Electro Commutation L Perfectionnements apportés aux commutateurs électriques à contact glissant et produits industriels nouveaux résultant de leur application
GB1123740A (en) * 1965-10-12 1968-08-14 Int Standard Electric Corp Electrical miniature rotary switch

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA767769A (en) * 1967-09-19 L. Brown William Rotary switch assembly
US2430215A (en) * 1945-04-25 1947-11-04 Daven Company Contact switch
US2629787A (en) * 1948-11-08 1953-02-24 Daven Company Electrical switch
US3175052A (en) * 1960-07-25 1965-03-23 Licentia Gmbh Multiple-position rotary stepping switch having an obliquely oriented contact bridge
US3534189A (en) * 1967-12-20 1970-10-13 Lucas Industries Ltd Direction indicator switches for road vehicles
US3585544A (en) * 1969-09-30 1971-06-15 Westinghouse Electric Corp Switch having magnetic latching means

Also Published As

Publication number Publication date
CS166277B2 (de) 1976-02-27
SU473384A3 (ru) 1975-06-05
FR2091513A5 (de) 1972-01-14
DE2123502C3 (de) 1978-09-07
DE2123502A1 (de) 1971-12-02
ES168961Y (es) 1972-05-16
JPS466678A (de) 1971-12-13
ES168961U (es) 1971-09-16
GB1338082A (en) 1973-11-21
DE2123502B2 (de) 1977-12-29
PL71120B1 (de) 1974-04-30

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