US3638630A - Internal combustion engine ignition distributor cap and coil assembly - Google Patents

Internal combustion engine ignition distributor cap and coil assembly Download PDF

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Publication number
US3638630A
US3638630A US38988A US3638630DA US3638630A US 3638630 A US3638630 A US 3638630A US 38988 A US38988 A US 38988A US 3638630D A US3638630D A US 3638630DA US 3638630 A US3638630 A US 3638630A
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US
United States
Prior art keywords
elongated
terminals
cap
ignition
ignition coil
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
US38988A
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English (en)
Inventor
Lewis R Hetzler
Robert E Campbell
Charles R Carlson
Gerald O Huntzinger
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.)
Motors Liquidation Co
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General Motors Corp
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Filing date
Publication date
Application filed by General Motors Corp filed Critical General Motors Corp
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Publication of US3638630A publication Critical patent/US3638630A/en
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    • 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
    • F02P7/021—Mechanical distributors
    • F02P7/026—Distributors combined with other ignition devices, e.g. coils, fuel-injectors

Definitions

  • An intermediate member of insulating material supports a plurality of elongated electrical terminals arranged in a circular pattern, one for each cylinder of the engine, and an equal number of elongated conductors, each of which is connected to one end of a corresponding one of the elongated terminals and extends substantially normal to the axis of the circular pattern of terminals.
  • An ignition coil housing member within which the ignition coil windings are enclosed, is secured to a cap member with the intermediate member disposed therebetween and the free end of each terminal extending through a corresponding terminal accommodating opening through the closed end portion of the cap member to provide a three-section assembly.
  • SHEET 2 BF 2 INVENTORS ATTORNEY INTERNAL COMBUSTION ENGINE IGNITION DISTRIBUTOR CAP AND COIL ASSEMBLY This invention is directed to internal combustion engine ignition distributor caps and, more specifically, to an internal combustion engine ignition distributor cap and coil assembly.
  • the ignition distributor and the ignition coil are separate units, the ignition coil being mounted separately from the distributor. Furthermore, with current production models, the ignition cables extending between the distributor and the respective spark plugs of the engine are taken from terminals arranged in a circular pattern about the top of the ignition distributor cap. This arrangement necessitates separate mounting facilities for the ignition coil and greatly adds to the height of the ignition distributor. ,To reduce the facilities required to install the ignition system and to reduce the overall height of the distributor, an internal combustion engine ignition distributor cap and coil assembly in which the ignition cables extend horizontally therefrom is desirable.
  • an internal combustion engine ignition distributor cap and coil assembly wherein an ignition coil housing member is secured to a distributor cap member with an intermediate member of an insulating material, which supports a plurality of elongated terminals arranged in a circular pattern extending through corresponding terminaI-accommodating openings in the closed end portion of the cap member and an equal number of elongated electrical conductors each connected to one end of a corresponding one of the terminals and extending substantially normal to the axis of the circular pattern of terminals, disposed therebetween to provide a three-section ignition distributor cap and coil assembly.
  • FIG. 1 is a section view of the internal combustion engine ignition distributor cap and coil assembly of this invention mounted on an ignition distributor;
  • FIG. 2 is a top plan view of the internal combustion engine ignition distributor cap and coil assembly of this invention
  • FIG. 3 is a section view of FIG. 1 taken along line 3-3 and looking in the direction of the arrows;
  • FIG. 4 is a section view of FIG. 3 taken along line 4-4 and looking in the direction of the arrows;
  • FIG. 5 is a section view of FIG. 1 taken along line 5-5 and looking in the direction of the arrows.
  • the internal combustion engine ignition distributor cap and coil assembly of this invention comprises an ignition coil housing member of plastic material within which the primary and secondary windings of the ignition coil 8 are enclosed; an intermediate member of electrical insulating material supporting a plurality of elongated terminals, 21 through 28, of electrically conductive material arranged in circular pattern and an equal number of elongated electrical conductors, 31 through 38, each one of which is electrically connected to one end of a corresponding one of the elongated terminals and extends substantially normal to the axisof the circular pattern of terminals; a cap member of electrical insulating material having a sidewall portion 41 and an integral end enclosing portion 42 having a terminal accommodating opening therethrough corresponding to each one of the elongated electrical terminals supported by intermediate member 20 and, a method for securely attaching the ignition coil housing member 10 to the cap member 40 with the intermediate member 20 disposed therebetween and each elongated electrical terminal supported thereby extending through the corresponding one of the terminal-accommodating openings through the end enclo
  • the primary and secondary windings of ignition coil 8 may, if desired, be precast in or impregnated by an epoxy resin which is cured to provide a hardened assembly. After the curing operation, the coil magnetic iron may be assembled to the coils to complete the ignition coil.
  • the ignition coil housing member I0 may be of two-piece construction made up of a top section 11 and a base or enclosing section 12 which may be fabricated of any suitable plastic material possessing satisfactory electrical insulation and mechanical impact characteristics such as the phenolics and alkyds.
  • the top section 11 may be provided with a circumferential lip 14 of a diameter which will accommodate base section 12 in a press fit relationship.
  • the volume enclosed by top section II and base section 12 and surrounding ignition coil 8 may be filled with a suitable potting compound, such as polyurethane, through openings 15 to provide a unitary ignition coil assembly.
  • the intermediate member 20 may be made of a resilient electrical insulating material such as polychloroprene and of two-piece construction made up of top and bottom sections, the bottom section being illustrated in FIG. 3. A top section of the same material and shape which is congruent to that of FIG. 3 may then be cemented or glued to the bottom section to provide a unitary assembly.
  • the intermediate member 20 supports a plurality of elongated terminals of electrically conductive material which are referenced in the drawings by the numerals 21 through 28', inclusive. These elongated electrical terminals are arranged in a circular pattern as is best seen in FIG. 3 and correspond in number to the number of cylinders of the engine with which the ignition distributor cap and coil assembly of this invention is being used. For purposes of this specification, it will be assumed that the ignition distributor cap and coil assembly of this invention is being used with an eight-cylinder engine; consequently, eight elongated terminals supported by intermediate member 20 are indicated in the drawings.
  • the intermediate member 20 also supports an equal number of elongated electrical conductors or ignition cables which electrically interconnect each elongated terminal of the intermediate member 20 with a corresponding spark plug of the engine with which the ignition distributor cap and coil assembly is being used and are referenced in the drawing by numerals 31 through 38, inclusive.
  • Each elongated conductor is connected to one end of a corresponding one of the elongated terminals and extends substantially normal to the axis of the circular pattern of terminals, as is best seen in FIGS. 3 and 4.
  • the elongated conductors may be substantially parallel with one half extending in a direction opposite the other half as best seen in FIG. 3. With this arrangement one half of the conductors are connected to respective spark plugs of one bank of engine cylinders and the other half are connected to the spark plugs of the other bank of engine cylinders. Consequently, crossed ignition cables between engine cylinder banks are eliminated.
  • each elongated terminal may have a reduced portion of a rectangular cross section at each end of a dimension which will snugly accommodate the eye of the electrical connector affixed to the end of each elongated conductor, as is best seen in FIG. 3. This reduced portion may be provided on both ends of each elongated terminal for the purpose of facilitating assembly.
  • the cap member 40 may be molded of any suitable plastic material possessing satisfactory electrical insulation and mechanical impact characteristics such as the phenolics and alkyds.
  • the cap member 40 may have a sidewall portion 41 which may be of circular cross section or any other accommodating shape, and an integral end enclosing portion 42.
  • cap member 40 may be of a two-piece construction without departing from the spirit of the invention.
  • the end enclosing portion 42 of cap member 40 has a terminal accommodating opening therethrough corresponding to each one of the elongated electrical terminals supported by intermediate member 20, as is best seen in FIGS. 4 and 5.
  • elongated terminal 27 extends through a corresponding terminal accommodating opening 47 through the end enclosing portion 42 of cap member 40.
  • the remaining elongated terminals extend through similar corresponding terminal accommodating openings through end enclosing portion 42 of cap 40, as is best seen in FIG. 5.
  • the ignition coil housing member may be securely attached to cap member 40 with the intermediate member 20 disposed therebetween and each elongated electrical terminal supported thereby extending through the corresponding one of the terminal accommodating openings through the end enclosing portion 42 of cap member 40 by screws or bolts 48 and 49 to provide a three-section assembly.
  • cap member 40 may be supplied with metallic inserts having an internally threaded bore which will accommodate the threads of screws or bolts 48 and 49. It is to be specifically understood, however, that any other suitable method of attaching ignition coil housing member 10 to cap member 40 with intermediate member 20 disposed therebetween may be employed without departing from the spirit of the invention.
  • Cap member 40 is arranged to be telescoped over the rotor 60 of an ignition distributor having a movable terminal 61 secured thereto.
  • movable terminal 61 passes closely adjacent that end of each of elongated terminals 21 through 28 which extends through the corresponding terminal accommodating opening in the end enclosing portion 42 of cap 40, as is best seen in FIG. 1.
  • the cap member 40 may be securely attached to the distributor bowl 63 by screws or bolts 64 and 65, as is seen in FIGS. 1 and 2.
  • external terminals such as 70 may be provided as shown in FIG. 1.
  • FIG. 1 Although the ignition distributor cap and coil assembly of this invention is indicated in FIG. 1 to be used with a magnetic-type distributor, it is to be specifically understood that this assembly is equally satisfactory for use with a breakercontact-type distributor.
  • the assembly of this invention reduces the number of electrical connections from 18 to nine with an eight cylinder engme.
  • An internal combustion engine ignition distributor cap and coil assembly comprising:
  • An internal combustion engine ignition distributor cap and coil assembly comprising:
  • an intermediate member of resilient electrical insulating material supporting a plurality of elongated terminals of electrically conductive material arranged in a circular pattern and an equal number of elongated electrical conductors, each one of which is electrically connected to one end of a corresponding one of said elongated terminals and extends substantially normal to the axis of said circular pattern of terminals,
  • a molded cap member of electrical insulating material having a sidewall portion and an integral end enclosing portion having a terminal-accommodating opening therethrough corresponding to each one of said elongated electrical terminals supported by said intermediate member, and

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
US38988A 1970-05-20 1970-05-20 Internal combustion engine ignition distributor cap and coil assembly Expired - Lifetime US3638630A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US3898870A 1970-05-20 1970-05-20

Publications (1)

Publication Number Publication Date
US3638630A true US3638630A (en) 1972-02-01

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ID=21903047

Family Applications (1)

Application Number Title Priority Date Filing Date
US38988A Expired - Lifetime US3638630A (en) 1970-05-20 1970-05-20 Internal combustion engine ignition distributor cap and coil assembly

Country Status (4)

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US (1) US3638630A (enrdf_load_stackoverflow)
DE (1) DE7120268U (enrdf_load_stackoverflow)
FR (1) FR2091779A5 (enrdf_load_stackoverflow)
GB (1) GB1287386A (enrdf_load_stackoverflow)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS499927U (enrdf_load_stackoverflow) * 1972-05-02 1974-01-28
US3795236A (en) * 1972-01-14 1974-03-05 Lucas Industries Ltd Ignition distributor
US3906918A (en) * 1972-08-18 1975-09-23 Lucas Electrical Co Ltd Spark ignition apparatus for internal combustion engines
US3914665A (en) * 1973-04-27 1975-10-21 British Leyland Uk Ltd Ignition coil
US5094219A (en) * 1989-11-15 1992-03-10 Hitachi, Ltd. Distributor with ignition coil
US20110132339A1 (en) * 2009-12-04 2011-06-09 Jerry Hoffmann Multiple Coil Distributor and Method of Use Thereof
US20120055433A1 (en) * 2010-09-02 2012-03-08 Prestolite Wire, Llc High energy ignition distributor cap

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1317357A (en) * 1919-09-30 Best available copy
US1976178A (en) * 1934-01-04 1934-10-09 Mallory Res Co Ignition coil and distributor assembly

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1317357A (en) * 1919-09-30 Best available copy
US1976178A (en) * 1934-01-04 1934-10-09 Mallory Res Co Ignition coil and distributor assembly

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3795236A (en) * 1972-01-14 1974-03-05 Lucas Industries Ltd Ignition distributor
JPS499927U (enrdf_load_stackoverflow) * 1972-05-02 1974-01-28
US3906918A (en) * 1972-08-18 1975-09-23 Lucas Electrical Co Ltd Spark ignition apparatus for internal combustion engines
US3914665A (en) * 1973-04-27 1975-10-21 British Leyland Uk Ltd Ignition coil
US5094219A (en) * 1989-11-15 1992-03-10 Hitachi, Ltd. Distributor with ignition coil
US20110132339A1 (en) * 2009-12-04 2011-06-09 Jerry Hoffmann Multiple Coil Distributor and Method of Use Thereof
US20120055433A1 (en) * 2010-09-02 2012-03-08 Prestolite Wire, Llc High energy ignition distributor cap

Also Published As

Publication number Publication date
DE7120268U (de) 1971-09-16
FR2091779A5 (enrdf_load_stackoverflow) 1972-01-14
GB1287386A (en) 1972-08-31

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