US3558838A - Contact breaker assemblies - Google Patents

Contact breaker assemblies Download PDF

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Publication number
US3558838A
US3558838A US810189A US3558838DA US3558838A US 3558838 A US3558838 A US 3558838A US 810189 A US810189 A US 810189A US 3558838D A US3558838D A US 3558838DA US 3558838 A US3558838 A US 3558838A
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United States
Prior art keywords
heel member
metal strip
engaged
contact
spring
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
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US810189A
Inventor
William Lawrence Fry
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ZF International UK Ltd
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Lucas Industries Ltd
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Publication date
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Publication of US3558838A publication Critical patent/US3558838A/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
    • H01H1/22—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P7/00—Arrangements of distributors, circuit-makers or -breakers, e.g. of distributor and circuit-breaker combinations or pick-up devices
    • F02P7/02—Arrangements of distributors, circuit-makers or -breakers, e.g. of distributor and circuit-breaker combinations or pick-up devices of distributors
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F21/00—Mobile visual advertising
    • G09F21/02—Mobile visual advertising by a carrier person or animal
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R39/00—Rotary current collectors, distributors or interrupters
    • H01R39/60—Devices for interrupted current collection, e.g. commutating device, distributor, interrupter

Definitions

  • a contact breaker, assembly in which a plate carries a fixed contact, and an insulating heel member mounted for pivotal movement relative to the plate carries a movable contact which is movable into and out of engagement with the fixed contacts.
  • a spring urges the heel member to pivot in a direction to engage the movable contact with the fixed contact.
  • the movable contact is secured to a metal shell which is engaged with the heel member, and the spring is defined by a metal strip, one end of which is engaged in a groove in the heel memberv
  • the metal strip and heel member are provided with means to secure the spring and the shell to the heel member.
  • This invention relates to contact breaker assemblies, for use in ignition distributors, of the kind comprising a plate, a fixed contact carried by the plate, an insulating heel member mounted for pivotal movement relative to said plate, a movable contact carried by said heel member and movable into and 0 out of engagement with the fixed contact. and a spring urging said heel member to pivot in a direction to engage the movable contact with the fixed contact.
  • the contact breaker assembly comprising a plate, a fixed contact, means mounting the fixed contact on the plate, an insulating heel member, means mounting the heel member for pivotal movement relative to the plate, a movable contact a metal shell engaged with the heel member, said movable contact being carried by the metal shell and movable into and out of engagement with the fixed contact, a spring urging the heel member to pivot in a direction to engage the movablecontact with the fixed contact, said spring being the form of a metal strip one end of which is engaged in a groove in the heel member, the metal strip being formed adjacent said one end with a projection which extends through the shell into engagement with the wall of an aperture in the heel member and thereby serves to secure the spring and the shell to the heel member, and the end of the metal strip remote from said one end being anchored to said plate.
  • the contact breaker assembly includes an arcuate plate having at one end thereof a hole.
  • the plate is engaged in use with the timing plate of a distributor and a post 11 extends upwardly from the timing 'plate through the hole so as to pivotally interconnect the plate 10 and the timing plate.
  • the arcuate plate 10 is formed intermediate its ends with an integral upstanding tag 10a on which is mounted fixed contact 12 of the assembly.
  • a molded insulating heel member 13 Pivotally engaged with the post 11 and spaced from the plate 10 by an insulating washer is a molded insulating heel member 13.
  • the member 13 includes a body part 14 of generally rectangular cross section and at one end of the body part 14 is an integral cam follower 15 which extends generally at right angles to the body part 14. At its end remote from the cam follower 15 the body part is formed integrally with a pair of part circular resilient arms 16 which define a passage the asthrough which the post I I extends.
  • a resilient metal shell 17 of generally inverted U-shaped configuration is engaged as a close fit with the heel member and one of the limbs of the shell 17 is extended to form an arm I8 on which movable contact 19 of the assembly is mounted.
  • One end of a leaf spring 21 is bent back upon itself and at its extremity is provided with an outwardly extending tag 22.
  • the cam follower I5 of the heel member 13 defines with the body part I4 a groove 23, and the shell [7 is formed with an aperture 24 which, when the shell 17 is engaged with the member I3, is ali ned with a bore 25 in the part 14 olthe member [3.
  • the shell I7 is first engaged with the member 13.
  • the spring 2l is, at this stage. straight, and its folded-back end is inserted in the groove 23, whereafter the spring 21 is bent to its required shape. Bending of the spring causes the part of the spring within the groove 23 to move against one side of the groove, and the further bending causes the tag 22 to wedge into the hole 24 and bore 25 to hold the assembly in position. Moreover the portion of the spring 21 adjacent the tag 22 urges the adjacent limb of the shell I7 firmly into engagement with the body part I4 of the member I3.
  • the spring 2] is pro vided with a bifurcated end defining a pair of arms 26, 27 and the tag 22 extends from the base of the bifurcation.
  • the arms 26, 27 are engaged in the groove 23 as in the example shown in FIG. 4.
  • a contact breaker assembly comprising a plate, a fixed contact, means mounting the fixed contact on the plate, an insulating heel member, means mounting the heel member for pivotal movement relative to the plate, a movable contact, a metal shell engaged with the heel member, said movable contact carried by the metal shell and movable into and out of engagement with the fixed contact, a spring urging the heel member to pivot in a direction to engage the movable contact with the fixed contact, said spring in the form of a metal strip one end of which is engaged in a groove in the heel member,
  • the metal strip formed adjacent said one end with a projection which extends through the metal shell into engagement with a wall of an aperture in the heel member and thereby serves to secure the spring and the metal shell to the heel member, and the end of the metal strip remote from said one end anchored to said plate.

Abstract

A contact breaker assembly in which a plate carries a fixed contact, and an insulating heel member mounted for pivotal movement relative to the plate carries a movable contact which is movable into and out of engagement with the fixed contacts. A spring urges the heel member to pivot in a direction to engage the movable contact with the fixed contact. The movable contact is secured to a metal shell which is engaged with the heel member, and the spring is defined by a metal strip, one end of which is engaged in a groove in the heel member. The metal strip and heel member are provided with means to secure the spring and the shell to the heel member.

Description

Inventor William Lawrence Fry Kings Norton, Birmingham, England Appl. No. 810,189 Filed Mar. 25, 1969 Patented Jan. 26, 1971 Assignee Joseph Lucas (Industries) Limited Birmingham, England a British Company Priority Mar. 29, 1968 Great Britain 15,175/68 CONTACT BREAKER ASSEMBLIES 3 Claims, 5 Drawing Figs.
US. Cl 200/ 166, 200/ l 9 Int. Cl H0lh 9/00, H0 1 h 9/10 Field of Search 200/19, 31, 1661-1, 16688 References Cited UNITED STATES PATENTS 2,211,412 8/1940 Filko 200/19(X) 2,835,755 5/1958 Filko 200/30 3,003,043 10/1961 Meyer, Jr. et al. 200/19(X) 3,014,101 12/1961 Gayler 200/30 3,033,947 5/1962 Johnson 200/166(A)(X) 3,267,243 8/1966 Dotto 200/ 1 66( H) Primary Examiner-11. 0. Jones Attorney-Holman, Glascock, Downing & Seebold ABSTRACT: A contact breaker, assembly in which a plate carries a fixed contact, and an insulating heel member mounted for pivotal movement relative to the plate carries a movable contact which is movable into and out of engagement with the fixed contacts. A spring urges the heel member to pivot in a direction to engage the movable contact with the fixed contact. The movable contact is secured to a metal shell which is engaged with the heel member, and the spring is defined by a metal strip, one end of which is engaged in a groove in the heel memberv The metal strip and heel member are provided with means to secure the spring and the shell to the heel member.
CONTACT BREAKER ASSEMBLIES BACKGROUND OF THE INVENTION This invention relates to contact breaker assemblies, for use in ignition distributors, of the kind comprising a plate, a fixed contact carried by the plate, an insulating heel member mounted for pivotal movement relative to said plate, a movable contact carried by said heel member and movable into and 0 out of engagement with the fixed contact. and a spring urging said heel member to pivot in a direction to engage the movable contact with the fixed contact.
SUMMARY OF THE INVENTION According to the invention, the contact breaker assembly comprising a plate, a fixed contact, means mounting the fixed contact on the plate, an insulating heel member, means mounting the heel member for pivotal movement relative to the plate, a movable contact a metal shell engaged with the heel member, said movable contact being carried by the metal shell and movable into and out of engagement with the fixed contact, a spring urging the heel member to pivot in a direction to engage the movablecontact with the fixed contact, said spring being the form of a metal strip one end of which is engaged in a groove in the heel member, the metal strip being formed adjacent said one end with a projection which extends through the shell into engagement with the wall of an aperture in the heel member and thereby serves to secure the spring and the shell to the heel member, and the end of the metal strip remote from said one end being anchored to said plate.
BRIEF DESCRIPTION OF THE DRAWINGS DETAILED DESCRIPTION OF THE INVENTION Referring to the drawings the contact breaker assembly includes an arcuate plate having at one end thereof a hole. The plate is engaged in use with the timing plate of a distributor and a post 11 extends upwardly from the timing 'plate through the hole so as to pivotally interconnect the plate 10 and the timing plate. The arcuate plate 10 is formed intermediate its ends with an integral upstanding tag 10a on which is mounted fixed contact 12 of the assembly.
Pivotally engaged with the post 11 and spaced from the plate 10 by an insulating washer is a molded insulating heel member 13. The member 13 includes a body part 14 of generally rectangular cross section and at one end of the body part 14 is an integral cam follower 15 which extends generally at right angles to the body part 14. At its end remote from the cam follower 15 the body part is formed integrally with a pair of part circular resilient arms 16 which define a passage the asthrough which the post I I extends.
A resilient metal shell 17 of generally inverted U-shaped configuration is engaged as a close fit with the heel member and one of the limbs of the shell 17 is extended to form an arm I8 on which movable contact 19 of the assembly is mounted.
One end ofa leaf spring 21 is bent back upon itself and at its extremity is provided with an outwardly extending tag 22. The cam follower I5 of the heel member 13 defines with the body part I4 a groove 23, and the shell [7 is formed with an aperture 24 which, when the shell 17 is engaged with the member I3, is ali ned with a bore 25 in the part 14 olthe member [3.
In or er to assemble the device shown. the shell I7 is first engaged with the member 13. The spring 2l is, at this stage. straight, and its folded-back end is inserted in the groove 23, whereafter the spring 21 is bent to its required shape. Bending of the spring causes the part of the spring within the groove 23 to move against one side of the groove, and the further bending causes the tag 22 to wedge into the hole 24 and bore 25 to hold the assembly in position. Moreover the portion of the spring 21 adjacent the tag 22 urges the adjacent limb of the shell I7 firmly into engagement with the body part I4 of the member I3.
In the modification shown in FIG. 5, the spring 2] is pro vided with a bifurcated end defining a pair of arms 26, 27 and the tag 22 extends from the base of the bifurcation. The arms 26, 27 are engaged in the groove 23 as in the example shown in FIG. 4.
In both arrangements the end of the spring 21 remote from the heel member 13 is anchored to the arcuate plate 10, and the spring is stressed so as to urge the heel member to pivot in a direction to engage the movable contact 19, into engagement with the fixed contact I2.
lclaim:
I. A contact breaker assembly comprising a plate, a fixed contact, means mounting the fixed contact on the plate, an insulating heel member, means mounting the heel member for pivotal movement relative to the plate, a movable contact, a metal shell engaged with the heel member, said movable contact carried by the metal shell and movable into and out of engagement with the fixed contact, a spring urging the heel member to pivot in a direction to engage the movable contact with the fixed contact, said spring in the form of a metal strip one end of which is engaged in a groove in the heel member,
the metal strip formed adjacent said one end with a projection which extends through the metal shell into engagement with a wall of an aperture in the heel member and thereby serves to secure the spring and the metal shell to the heel member, and the end of the metal strip remote from said one end anchored to said plate.
2. The assembly as claimed in claim I wherein said one end of the metal strip is bent back upon itself, with said projection formed at the free end of the portion of the metal strip which is bent upon the remainder of the strip and the bend interconnect said portion and the remainder of the metal strip engaged in said groove in the heel member.
3. The assembly as claimed in claim I wherein the said one end of the metal strip is bifurcated so as to provide arms, the free ends of the arms defined at said one end of the metal strip being engaged in said groove in the heel member, and said projection being integral with the metal strip and extending from the metal strip at the root of said arms.

Claims (3)

1. A contact breaker assembly comprising a plate, a fixed contact, means mounting the fixed contact on the plate, an insulating heel member, means mounting the heel member for pivotal movement relative to the plate, a movable contact, a metal shell engaged with the heel member, said movable contact carried by the metal shell and movable into and out of engagement with the fixed contact, a spring urging the heel member to pivot in a direction to engage the movable contact with the fixed contact, said spring in the form of a metal strip one end of which is engaged in a groove in the heel member, the metal strip formed adjacent said one end with a projection which extends through the metal shell into engagement with a wall of an aperture in the heel member and thereby serves to secure the spring and the metal shell to the heel member, and the end of the metal strip remote from said one end anchored to said plate.
2. The assembly as claimed in claim 1 wherein said one end of the metal strip is bent back upon itself, with said projection formed at the free end of the portion of the metal strip which is bent upon the remainder of the strip and the bend interconnect said portion and the remainder of the metal strip engaged in said groove in the heel member.
3. The assembly as claimed in claim 1 wherein the said one end of the metal strip is bifurcated so as to provide arms, the free ends of the arms defined at said one end of the metal strip being engaged in said groove in the heel member, and said projection being integral with the metal strip and extending from the metal strip at the root of said arms.
US810189A 1968-03-29 1969-03-25 Contact breaker assemblies Expired - Lifetime US3558838A (en)

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GB1517568 1968-03-29

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US (1) US3558838A (en)
DE (1) DE1915845C3 (en)
ES (1) ES365791A1 (en)
FR (1) FR2005126A1 (en)
GB (1) GB1251386A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2432622A1 (en) * 1978-08-01 1980-02-29 Ducellier & Cie IC engine ignition circuit contact breaker arm - has injection moulded pivot bush and cam follower with injection channel compensating for thermal deformation of arm
US4291206A (en) * 1978-05-09 1981-09-22 Lucas Industries Limited Contact breaker assembly

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2211412A (en) * 1940-01-02 1940-08-13 Filko John Breaker arm for ignition devices
US2835755A (en) * 1956-10-25 1958-05-20 Filko John Adjustable contact assembly
US3003043A (en) * 1958-06-13 1961-10-03 Electric Auto Lite Co Contacts assembly
US3014101A (en) * 1958-04-18 1961-12-19 Wipac Dev Ltd Contact breakers for engine ignition systems
US3033947A (en) * 1958-12-30 1962-05-08 Holley Carburetor Co Ignition contact set
US3267243A (en) * 1965-01-27 1966-08-16 Mallory & Co Inc P R Breaker arm assembly for a contact set

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2211412A (en) * 1940-01-02 1940-08-13 Filko John Breaker arm for ignition devices
US2835755A (en) * 1956-10-25 1958-05-20 Filko John Adjustable contact assembly
US3014101A (en) * 1958-04-18 1961-12-19 Wipac Dev Ltd Contact breakers for engine ignition systems
US3003043A (en) * 1958-06-13 1961-10-03 Electric Auto Lite Co Contacts assembly
US3033947A (en) * 1958-12-30 1962-05-08 Holley Carburetor Co Ignition contact set
US3267243A (en) * 1965-01-27 1966-08-16 Mallory & Co Inc P R Breaker arm assembly for a contact set

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4291206A (en) * 1978-05-09 1981-09-22 Lucas Industries Limited Contact breaker assembly
FR2432622A1 (en) * 1978-08-01 1980-02-29 Ducellier & Cie IC engine ignition circuit contact breaker arm - has injection moulded pivot bush and cam follower with injection channel compensating for thermal deformation of arm

Also Published As

Publication number Publication date
FR2005126A1 (en) 1969-12-05
DE1915845A1 (en) 1969-11-13
GB1251386A (en) 1971-10-27
DE1915845B2 (en) 1973-03-08
ES365791A1 (en) 1971-05-16
DE1915845C3 (en) 1973-09-27

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