US3812305A - Terminal connector assembly for automotive distributor contact breaker - Google Patents

Terminal connector assembly for automotive distributor contact breaker Download PDF

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Publication number
US3812305A
US3812305A US00323384A US32338473A US3812305A US 3812305 A US3812305 A US 3812305A US 00323384 A US00323384 A US 00323384A US 32338473 A US32338473 A US 32338473A US 3812305 A US3812305 A US 3812305A
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US
United States
Prior art keywords
terminal member
terminal
limbs
clip
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
Application number
US00323384A
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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.)
Lucas Electrical Co Ltd
Original Assignee
Lucas Electrical Co 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 Electrical Co Ltd filed Critical Lucas Electrical Co Ltd
Application granted granted Critical
Publication of US3812305A publication Critical patent/US3812305A/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
    • F02P7/00—Arrangements of distributors, circuit-makers or -breakers, e.g. of distributor and circuit-breaker combinations or pick-up devices
    • F02P7/06—Arrangements of distributors, circuit-makers or -breakers, e.g. of distributor and circuit-breaker combinations or pick-up devices of circuit-makers or -breakers, or pick-up devices adapted to sense particular points of the timing cycle
    • F02P7/063—Mechanical pick-up devices, circuit-makers or -breakers, e.g. contact-breakers
    • F02P7/0631—Constructional details of contacts

Definitions

  • ABSTRACT A contact breaker assembly including a fixed contact a movable contact and a conductive leaf spring electrically connected to the movable contact and urging the movable contact towards the fixed contact.
  • the leaf spring At its end remote from the movable contact the leaf spring is bent back on itself to define a spring clip having a pair of limbs.
  • a terminalmember is engageable between the limbs of the spring clip so as to be electrically and physically connected to the leaf spring, and that region of the terminal which is received between the limbs of the spring clip bears a projection.
  • TERMINAL CONNECTOR ASSEMBLY FOR AUTOMOTIVE DISTRIBUTOR CONTACT BREAKER This invention relates to contact breaker assemblies for use in internal combustion engine spark ignition systems.
  • a contact breaker assembly includes a fixed contact, a movable contact, a conductive leaf spring electrically connected to the movable contact and urging the movable contact towards the fixed contact, one end of the leaf spring being bent back upon itself to define a spring clip and a terminal member engageable between the limbs of the spring clip so as to be physically and electrically connected to the spring, the terminal having thereon a projection and the spring clip being arranged to receive and grip that region of the terminal which bears the projection.
  • the terminal member is generally rectangular and has the projection disposed generally centrally on one face thereof, there being a conductive lead physically and electrically connected to the terminal member at one edge thereof.
  • the terminal is cranked, the terminal being engaged with said spring clip so that the limbs of the clip extend between the cranked portion and the lead and the cranked portion preventing withdrawal of the terminal from the clip in a direction transverse to the limbs of the clip.
  • a second conductive lead is physically and electrically connected to the terminal member at the edge thereof opposite the first mentioned lead.
  • the assembly includes a second terminal member, engaged in the spring clip, the second terminal member having therein an aperture which accommodates the projection of the first tenninal member, the thickness of the second terminal member being similar to and not less than the height of the projection so that the flexure of the spring clip when gripping the first and second terminal members is similar to that when gripping only the first terminal member.
  • FIG. 1 is a plan view of a contact breaker assembly
  • FIG. 2 is a sectional view generally on the line 22 of part of the arrangement shown in FIG. 1,
  • FIG. 3 is a plan view of one of the terminals shown in FIG. 1,
  • FIG. 4 is a side elevational view of the terminal shown in FIG. 3,
  • FIG. 5 is a plan view of the contact breaker spring shown in FIG. 1,
  • FIGS. 6, 7 and 8 are plan views respectively of three terminal members
  • FIG. 9 is a plan view of a modification of the terminal member shown in FIG. 7.
  • the contact breaker assembly includes a conductive angle plate 11 having an integral upstanding tag 12 to which is secured to the fixed contact 13 of the assembly.
  • the movable contact 14 of the assembly is carried by a metal shell 15 secured to an insulating heel member 16 which defines a pair of arms 17 embracing a post 18 upstanding from the plate 11.
  • the arms 17 mount the heel 16 for pivotal movement about the axis of the post 18 so that the movable contact 14 is movable towards and away from the fixed contact 13.
  • a conductive leaf spring 19 is riveted at one end to the metal shell 15, and so is electrically connected to the movable contact 14. At its other end the spring 19 extends within a channel in an insulating abutment member 21 supported on a tongue 22 upstanding from the plate 11.
  • the spring 19 is stressed when engaged in the channel in the member 21, and so urges the heel 16 to pivot about the post 18 to engage the contact 14 with the contact 13.
  • the free end of the spring 19 remote from the heel assembly projects from the channel in the member 21, and is bent back upon itself to define a spring clip 23.
  • the contact breaker assembly is mounted within the casing of an ignition distributor adjacent a rotatable cam shaft thereof.
  • the heel member 16 has a cam follower portion 24 which engages the cam surface of the cam shaft and rotation of the cam shaft results in movement of the contact 14 into and out of engagement with the contact 13.
  • the fixed contact 13 is earthed through the angle plate 11 and the casing of the distributor, and one terminal of a capacitor is also earthed through the casing of the distributor.
  • the other terminal of the capacitor is to be connected to the contact 14 as is a low tension terminal provided on the casing of the distributor.
  • the low tension terminal carried by the casing is electrically connected, in use, in the usual manner through the primary winding of an ignition coil to one pole of a battery, the other pole of which is earthed.
  • the low tension terminal on the casing of the distributor is connected by way of a conductive lead to a conductive terminal member 25.
  • the terminal member 25 is generally rectangular in plan view, (FIG. 3) and is provided with a generally centrally disposed projection 26.
  • Adjacent one edge the terminal member 25 is provided with a deformable tag 27 which is deformed to grip the sheath of the associated conductive lead, the conductive core of the lead being welded to the terminal member with the lead extending parallel with the edge of ,the terminal member.
  • Adjacent its opposite edge the terminal member is formed with a cranked portion 28 and the distance between the cranked por tion and the lead which is secured to the terminal member is substantially equal to the width of the strip forming the clip 23.
  • the terminal member can be engaged between the limbs of the clip 23 with the lead of the terminal member above the clip and the cranked portion 28 thereof below the clip, the lead and the crank portion resisting withdrawal of the terminal member transversely relative to the clip.
  • the terminal member can be provided with a cranked region adjacent the lead, so that the second crank portion aids the lead in resisting movement of the terminal member relative to the clip in one direction.
  • a second conductive terminal member 29 (FIG. 7) is connected to said other terminal of the capacitor by way of a conductive lead, the terminal member 29 being substantially flat, and having a centrally disposed aperture 29a.
  • the height of the projection 26 on the terminal member 25 is substantially equal to and not greater than the thickness of the terminal member 29, and the terminal members 25, 29 are engaged in facial contact between the limbs of the clip 23 with the projection 26 accommodated within the aperture 29a of the terminal 29. Movement of the terminal member 29 relative to the terminal member 25 is resisted by engagement of the projection with the walls of the aperture 29a, and as previously described movement of the terminal member 25 transverse to the clip is resisted by the cranked portion 28 and the lead associated with the terminal member 25.
  • the terminal includes a central region 31 having thereon a projection 32 and having at opposite sides thereof cranked portions extended to receive respective conductive leads 33, 34.
  • the terminal includes a pair of deformable tags equivalent to the tag 27 of the terminal 25.
  • the region 31 of the terminal is received between the limbs of the clip 23, and since the terminal is provided with a projection 32 equivalent to the projection 26 of the terminal 25 then the clip 23 will be flexed by a similar amount when gripping the terminal shown in FIG. 6 as when gripping the pair of terminal members 25, 29 as shown in FIG. 2.
  • the third electrical connection can be made by way of a terminal member identical with the terminal member 29. In such an instance, the projection 32 would be accommodated within the aperture 29a of the terminal member 29.
  • the terminal member shown in FIG. 6 should it become necessary to replace for example the capacitor and the lead 34, then the terminal member can be severed along the line of the cranked portion of the terminal member associated with the lead 34 leaving a terminal member substantially identical with the terminal member 25. Thereafter, a replacement capacitor can be inserted into the assembly the conductive lead of the replacement capacitor carrying a terminal member similar to terminal member 29.
  • terminal member which carries the projection is also the terminal member which is provided with the cranked portion.
  • the terminal member with the projection could be plain other than for the projection 311a as shown at 30 in FIG. 8, and the terminal member with the aperture could have the cranked portion.
  • the modified terminal member 35 shown in FlG. 9 can replace any of the terminal members of the kind having a hole for receiving the projection of a mating terminal member.
  • the modification consists of the replacement of the hole 29a by an open ended slot 36 and the provision of an planar extension 37.
  • the slot 36 permits easy engagement of the terminal 35 between the limbs of the clip without the need to remove the terminal having the projection from the clip in order to inter-engage the terminals.
  • the extension 37 lies in the channel of the abutment member 21, in use, and so resists disengagement of the terminal 35 from the assembly in the direction in which the slot extends.
  • a contact breaker assembly for use in an internal combustion engine spark ignition system, including a fixed contact, a movable contact, a conductive leaf spring electrically connected to said movable contact and urging said movable contact towards said fixed contact, one end of said leaf spring being bent back upon itself to define a spring clip, and a terminal member engaged between the limbs of said spring clip so that the terminal is physically and electrically connected to said spring, said terminal having thereon a projection, and being positioned between said limbs with said limbs gripping between them that portion of the terminal which bears the projection.
  • terminal member is generally rectangular and has said projection disposed generally centrally on one face thereof, there being a conductive lead physically and electrically connected to the terminal member at one edge thereof.
  • An assembly as claimed in claim 3 further including a second terminal member, engaged in said spring clip, the second terminal member having therein an ap erture which accommodates the projection of the first terminal member, the thickness of the second terminal member being similar to and not less than the height of the projection so that the flexure of the spring clip when gripping the first and second terminal members is similar to that when gripping only the first terminal member.
  • a contact breaker assembly for use in an internal combustion engine spark ignition system, including a fixed contact, a movable contact, a conductive leaf spring electrically connected to said movable contact and urging said movable contact towards said fixed contact, one end of said leaf spring being bent back upon itself to define a spring clip, and a terminal member engaged between the limbs of said spring clip, whereby said terminal is physically and electrically connected to said spring, said terminal member including a first portion bearing a projection, said first portion being gripped between said limbs of said spring clip, and said first terminal member including a second,
  • said terminal member including a first portion having therein an aperture, said first portion of said second terminal member also being gripped between said limbs of said spring clip, with said projection of said first terminal member disposed in said spring, said terminal including a central portion bearing a projection, said central portion being gripped between said limbs of said spring clip, a first marginal portion projecting from between said limbs at one side of said clip, and having physically and electrically connected thereto a first conductive lead, and a second marginal portion projecting from between said limbs, at the opposite side of said clip and having physically and electrically connected thereto a second conductive lead.
  • a contact breaker assembly for use in an internal 6 combustion engine spark ignition system, including a fixed contact, a movable contact, a conductive leaf spring electrically connected to said movable contact and urging said movable contact towards said fixed contact, one end of said leaf spring being bent back upon itself to-define a spring clip, and a first terminal member engaged between the limbs of said spring clip, whereby said first terminal member is physically and electrically connected to said aperture of said second terminal member, and said second terminal member having a second, marginal portion projecting from between said limbs at one side of said clip, and having physically and electrically connected thereto a second conductive lead, the thickness of said second terminal member being similar to, and not less than the height of said projection of said first terminal member so that the flexure of said spring clip when gripping said first and second terminal members is similar to that when gripping only said first terminal member.

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)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Spark Plugs (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
US00323384A 1972-01-15 1973-01-15 Terminal connector assembly for automotive distributor contact breaker Expired - Lifetime US3812305A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB202572*[A GB1409261A (en) 1972-01-15 1972-01-15 Contact breaker assemblies for use in ignition distributors

Publications (1)

Publication Number Publication Date
US3812305A true US3812305A (en) 1974-05-21

Family

ID=9732295

Family Applications (1)

Application Number Title Priority Date Filing Date
US00323384A Expired - Lifetime US3812305A (en) 1972-01-15 1973-01-15 Terminal connector assembly for automotive distributor contact breaker

Country Status (17)

Country Link
US (1) US3812305A (nl)
JP (1) JPS4878335A (nl)
AR (1) AR206877A1 (nl)
AU (1) AU468540B2 (nl)
BR (1) BR7300327D0 (nl)
CS (1) CS166665B2 (nl)
DD (1) DD103489A5 (nl)
DE (1) DE2301676C3 (nl)
ES (1) ES187634Y (nl)
FR (1) FR2168776A5 (nl)
GB (1) GB1409261A (nl)
HU (1) HU166118B (nl)
IT (1) IT976846B (nl)
PL (1) PL89097B1 (nl)
SU (1) SU952114A3 (nl)
YU (1) YU33636B (nl)
ZA (1) ZA73249B (nl)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4142077A (en) * 1977-06-22 1979-02-27 R. E. Phelon Company, Inc. Breaker point assembly
WO2001007781A1 (en) * 1999-07-21 2001-02-01 Briggs & Stratton Corporation Spark blanking apparatus for an internal combustion engine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5659981U (nl) * 1980-09-29 1981-05-22

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2316156A (en) * 1939-09-25 1943-04-13 James A Doran Contact breaker device
US2682038A (en) * 1950-09-21 1954-06-22 Gen Motors Corp Connector
US3386074A (en) * 1954-04-28 1968-05-28 Gen Motors Corp Electrical connector
FR1554332A (nl) * 1967-02-14 1969-01-17
DE6753297U (de) * 1968-07-27 1969-04-17 Bosch Gmbh Robert Unterbrecher fuer zuendanlagen von brennkraftmaschinen
GB1327412A (en) * 1970-01-23 1973-08-22 Lucas Industries Ltd Contact breaker assemblies
JPS5129686Y2 (nl) * 1971-03-17 1976-07-27

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4142077A (en) * 1977-06-22 1979-02-27 R. E. Phelon Company, Inc. Breaker point assembly
WO2001007781A1 (en) * 1999-07-21 2001-02-01 Briggs & Stratton Corporation Spark blanking apparatus for an internal combustion engine
US6237555B1 (en) 1999-07-21 2001-05-29 Briggs & Stratton Corporation Spark blanking apparatus for an internal combustion engine

Also Published As

Publication number Publication date
AU468540B2 (en) 1976-01-15
AU5078073A (en) 1974-07-11
SU952114A3 (ru) 1982-08-15
ZA73249B (en) 1973-10-31
ES187634U (es) 1974-01-01
GB1409261A (en) 1975-10-08
DE2301676B2 (de) 1979-03-29
PL89097B1 (nl) 1976-10-30
YU33636B (en) 1977-10-31
JPS4878335A (nl) 1973-10-20
DD103489A5 (nl) 1974-01-20
IT976846B (it) 1974-09-10
FR2168776A5 (nl) 1973-08-31
BR7300327D0 (pt) 1973-10-09
CS166665B2 (nl) 1976-03-29
DE2301676A1 (de) 1973-07-19
HU166118B (nl) 1975-01-28
ES187634Y (es) 1974-08-16
AR206877A1 (es) 1976-08-31
DE2301676C3 (de) 1979-11-29

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