US3795778A - Ignition distributor with contact breaker assembly mounting plate - Google Patents

Ignition distributor with contact breaker assembly mounting plate Download PDF

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Publication number
US3795778A
US3795778A US00323382A US3795778DA US3795778A US 3795778 A US3795778 A US 3795778A US 00323382 A US00323382 A US 00323382A US 3795778D A US3795778D A US 3795778DA US 3795778 A US3795778 A US 3795778A
Authority
US
United States
Prior art keywords
mounting plate
contact breaker
breaker assembly
shaft
cam
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
US00323382A
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English (en)
Inventor
A Rees
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
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 Lucas Industries Ltd filed Critical Lucas Industries Ltd
Application granted granted Critical
Publication of US3795778A publication Critical patent/US3795778A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F02P5/00—Advancing or retarding ignition; Control therefor
    • F02P5/04—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions
    • F02P5/05—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions using mechanical means
    • 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

  • An ignition distributor for an internal combustion en- 1 gine spark ignition system includes a hollow casing [30] Foreign Application Priority Data having joumalled for rotation therein a cam shaft hav- Jan. 15, 1972 Great Britain, 2011/72 ing a cam p Secured Within the easing is a contact breaker assembly mounting plate, the mount- 52 us. Cl 200/19 R, 200/30 A, 200/31 DP s Plate being spaced from the level of the cam p 51 Int. Cl. H01h 19/62 of the em shaft Mounted on the mounting Plate 5 Field f Search.
  • This invention relates to ignition distributors for internal combustion engine spark ignition systems.
  • An ignition distributor includes a hollow casing, a shaft mounted for rotation in the casing and having a cam portion, a contact breaker assembly mounting plate secured within the casing and spaced from the level of the cam portion of the shaft, a contact breaker assembly, and a spacer member secured to the mounting plate and supporting the contact breaker assembly, the dimensions of the spacer being such that a cam follower of the contact breaker assem bly is engageable with the cam portion of said shaft.
  • the mounting plate is arranged to be capable of rotatably supporting a timing plate carrying a contact breaker assembly.
  • FIG. 1 is a plan view partly in section of an ignition distributor with the top cover and the cam shaft thereof removed,
  • FIG. 2 is a sectional view on the line A-A in FIG.
  • FIG. 3 is a plan view of an alternative form of the spacer shown in FIG. 1 and 2,
  • FIG. 4 is a side view of the spacer shown in FIG. 3,
  • FIG. 5 is a sectional view on the line 5-5 in FIG. 3.
  • the ignition distributor which is for use in the spark ignition system of an internal combustion engine includes ahollow metal casing having journalled for rotation therein an axially extending cam shaft 11.
  • ahollow metal casing having journalled for rotation therein an axially extending cam shaft 11.
  • Rigidly secured to the casing 11 and extending transversely relative to the axis of the casing is an annular mounting plate 12.
  • the wall of the central aperture 13 of the mounting plate 12 is extended to define an upwardly directed cylindrical spigot 14 the purpose of which will be described later.
  • Thecam shaft 11 extends through the spigot 14 and has a cam portion 11a spaced above the level of the plate 12.
  • the portion 11a of the shaft 11 is the portion which operates the contact breaker assembly 15 of the distributor a cam follower 16 of the assembly 15 engaging the surface of the portion 11a of the shaft 11.
  • the contact breaker assembly includes an angle plate 17 having upstanding therefrom a hollow sleeve 18 upon which is pivotally mounted an insulating heel member 19 which has the cam follower 16 integral therewith.
  • a metal shell 21 Secured to the heel 19 is a metal shell 21 which carries the movable contact 22 of the contact breaker assembly.
  • the fixed contact 23 of the assembly is carried by a tag integral with the plate 17 and a conductive spring 24 is secured at one end of the shell 21 and urges the heel 19 to pivot about the sleeve 18 to engage the contact '22 with the contact 23.
  • ignition distributor there are two usual type of ignition distributor, one in which the contact breaker assembly of the distributor is mounted on a timing plate rotatably supported on the mounting plate so that the timing plate and therefore the contact breaker assembly can be moved relative to the mounting plate and the cam shaft of the distributor so as to alter the ignition timing of the distributor.
  • the timing plate is conveniently moved by a vacuum unit connected to the inlet manifold of the internal combustion engine.
  • the second type of distributor dispenses with the timing plate intermediate the contact breaker assembly and the mounting plate, and the contact breaker assembly is secured direct to the mounting plate so as to be immovable relative to the casing of the distributor.
  • a spacer member 25 in order to permit the maximum number of components common to both types of distributor, to be used, there is provided a spacer member 25.
  • the spacer member 25 is in the form of an arcuate, steel plate which is secured to the mounting plate 12 by means of rivets.
  • the surface of the member 25 remote from the mounting plate 12 is provided with an upstanding post 28, and the contact breaker assembly is engaged with the surface of the spacer member 25 remote from the plate 12 with the upstanding post 28 extending within the hollow sleeve 18 of the contact breaker assembly, through an aperture in the angle plate 17.
  • clamping screw 26 extends though an arcuate slot in the angle plate 17 into a screw threaded bore 29 in the spacer 25 to permit the angle plate to be locked in position relative to the spacer 25 after being pivoted about the axis of the sleeve 18 to adjust the maximum operating gap which can occur between the contacts 23, 22 in use.
  • the casing 10, the cam shaft 11, the mounting plate 12, and the contact breaker assembly 15 can be used without alteration for a distributor arrangement where the contact breaker assembly is mounted on a timing plate rotatably supported by way of a cylindrical bush on the spigot 14 of the mounting plate.
  • the'thickness of the spacer member 25 is so chosen that the cam follower 16 of the contact breaker assembly engages that region of the portion 11a of the shaft 11 which it. would have engaged had the arrange ment been a moving contact breaker type arrangement where the contact breaker assembly is mounted on a timing plate.
  • the spacer member 25 in metal, so that it constitutes part of the earth side of the electrical circuit of the contact breaker assembly.
  • the spacer member could be formed from a synthetic resin mate- 'rial. in which case the fixed contact 23 of the contact breaker assembly would be electrically connected to the casing by way of an earth lead.
  • the spacer 25 need not be formed a solid block of thickness equal to the spacing required, but can be formed as a diecast plate having integral rivets 25a projecting from one face cluding a cam portion, a contact breaker assembly mounting plate fixedly secured within said casing and spaced from the level of said cam portion of said shaft,
  • the rivets each include enlarged regions adjato be held against movement relative to said mounting plate in use, a contact breaker assembly mounted on said spacer, the dimensions of said spacer being such that a cam follower of said contact breaker assembly is engageable with. said cam portion of said shaft, and, said mounting plate including means whereby said mounting plate is capable of rotatably supporting a tim ing'plate in turn supporting a contact breaker assembly.

Landscapes

  • 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)
US00323382A 1972-01-15 1973-01-15 Ignition distributor with contact breaker assembly mounting plate Expired - Lifetime US3795778A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB201172*[A GB1406701A (en) 1972-01-15 1972-01-15 Ignition distributors

Publications (1)

Publication Number Publication Date
US3795778A true US3795778A (en) 1974-03-05

Family

ID=9732030

Family Applications (1)

Application Number Title Priority Date Filing Date
US00323382A Expired - Lifetime US3795778A (en) 1972-01-15 1973-01-15 Ignition distributor with contact breaker assembly mounting plate

Country Status (13)

Country Link
US (1) US3795778A (cs)
JP (1) JPS4878339A (cs)
AU (1) AU5078473A (cs)
BR (1) BR7300323D0 (cs)
CS (1) CS166833B2 (cs)
DD (1) DD103029A5 (cs)
DE (1) DE2301713A1 (cs)
ES (1) ES187632Y (cs)
FR (1) FR2168769A5 (cs)
GB (1) GB1406701A (cs)
HU (1) HU166121B (cs)
IT (1) IT976843B (cs)
ZA (1) ZA73241B (cs)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3862384A (en) * 1973-09-06 1975-01-21 Rapid Technological Devices In Distributor apparatus including adjustable distributor plate and replaceable contact breaker module assembly
US4005294A (en) * 1975-05-02 1977-01-25 Eltra Corporation Ignition breaker point arrangement
US4058691A (en) * 1976-08-04 1977-11-15 Vonsimi Sales Corporation Adaptor mounting for adjustable distributor contact breaker assembly module
US6016833A (en) * 1995-08-06 2000-01-25 Knorr-Bremse Systems Fur Nutzfahrzeuge Gmbh Valve plate for piston compressor, especially for air compression in motor vehicles

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4066224A (en) 1975-10-28 1978-01-03 William Hargreaves Knock-down shipping reel for flexible cable

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US23749A (en) * 1859-04-26 Stove
US2730583A (en) * 1952-10-16 1956-01-10 Renberles Products Co Distributor plate assembly
US2896035A (en) * 1956-05-28 1959-07-21 Shurhit Products Inc Breaker point assembly
US3091672A (en) * 1959-01-16 1963-05-28 Ernst A Longenecker Ignition distributor
US3688392A (en) * 1969-08-12 1972-09-05 William Harold Cooksey Ignition distributors

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US23749A (en) * 1859-04-26 Stove
US2730583A (en) * 1952-10-16 1956-01-10 Renberles Products Co Distributor plate assembly
US2896035A (en) * 1956-05-28 1959-07-21 Shurhit Products Inc Breaker point assembly
US3091672A (en) * 1959-01-16 1963-05-28 Ernst A Longenecker Ignition distributor
US3688392A (en) * 1969-08-12 1972-09-05 William Harold Cooksey Ignition distributors

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3862384A (en) * 1973-09-06 1975-01-21 Rapid Technological Devices In Distributor apparatus including adjustable distributor plate and replaceable contact breaker module assembly
US4005294A (en) * 1975-05-02 1977-01-25 Eltra Corporation Ignition breaker point arrangement
US4058691A (en) * 1976-08-04 1977-11-15 Vonsimi Sales Corporation Adaptor mounting for adjustable distributor contact breaker assembly module
US6016833A (en) * 1995-08-06 2000-01-25 Knorr-Bremse Systems Fur Nutzfahrzeuge Gmbh Valve plate for piston compressor, especially for air compression in motor vehicles

Also Published As

Publication number Publication date
GB1406701A (en) 1975-09-17
IT976843B (it) 1974-09-10
FR2168769A5 (cs) 1973-08-31
AU5078473A (en) 1974-07-11
DE2301713A1 (de) 1973-07-19
ZA73241B (en) 1973-10-31
ES187632U (es) 1974-01-01
CS166833B2 (cs) 1976-03-29
ES187632Y (es) 1974-08-16
JPS4878339A (cs) 1973-10-20
HU166121B (cs) 1975-01-28
DD103029A5 (cs) 1974-01-05
BR7300323D0 (pt) 1973-10-09

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