EP0327478A1 - Elektrischer Endanschluss - Google Patents

Elektrischer Endanschluss Download PDF

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Publication number
EP0327478A1
EP0327478A1 EP89420032A EP89420032A EP0327478A1 EP 0327478 A1 EP0327478 A1 EP 0327478A1 EP 89420032 A EP89420032 A EP 89420032A EP 89420032 A EP89420032 A EP 89420032A EP 0327478 A1 EP0327478 A1 EP 0327478A1
Authority
EP
European Patent Office
Prior art keywords
well
sleeve
electrical connection
branch
plug
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.)
Withdrawn
Application number
EP89420032A
Other languages
English (en)
French (fr)
Inventor
Maurice Roger Bianchi-Amoretti
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.)
Electricfil Industrie SARL
Electricfil SA
Original Assignee
Electricfil Industrie SARL
Electricfil SA
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 Electricfil Industrie SARL, Electricfil SA filed Critical Electricfil Industrie SARL
Publication of EP0327478A1 publication Critical patent/EP0327478A1/de
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T13/00—Sparking plugs
    • H01T13/02—Details
    • H01T13/04—Means providing electrical connection to sparking plugs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2101/00—One pole

Definitions

  • the present invention relates to the field of electrical connection between a conductor and an apparatus for producing or using electrical energy.
  • the present invention relates, more particularly, to the means of electrical connection between conductors and organs or accessories for the production or use of electrical energy forming part of heat engines and, more particularly but not exclusively, of heat engines of the type explosion and positive ignition.
  • connection lugs adapted at the end of the conductors and comprising an electrical connection branch able to cooperate with an olive-shaped terminal presented by a production device. or use.
  • connection means involving, in place of the olive-shaped terminal, a terminal in the form of a conductive well delimiting a peripheral groove with which the bosses or the like of a socket cooperate. or tubular plug formed by the electrical connection branch of a connection piece.
  • connection branch is threaded onto the olive-shaped terminal, while, in the second case, the socket or tubular plug is inserted inside the conductive well.
  • connection ends with tubular plug are generally, not to say in all cases, produced by rolling a pre-cut blank.
  • the blank is, generally, made of a metal chosen for its good electrical conductivity and its resistance to corrosion, for example, aluminum alloy, copper alloy or, again, stainless steel.
  • the tubular plug is produced by rolling two wings whose facing edges are kept at a distance to provide an elastic deformation capacity. Generally, in each of the wings, a boss is formed to cooperate with the groove of Wells.
  • the patent FR-A-1 320 252 shows, for example, an end piece or connector for electrical connection comprising a tubular plug composed of a cylindrical metallic ferrule crimped on a conductive electrical cable, in order to establish an electrical connection.
  • the plug is intended to be connected with a conductive well, of cylindrical shape, delimiting an annular groove.
  • the ferrule comprises, in its mass, tongues in the form of curved and projecting ribs intended to come into force in force in the annular groove of the conducting well.
  • Patent application EP-A-0 067 780 discloses an angled connection terminal, crimped on an electrical conductor and comprising connection wings provided with projecting bosses whose mechanical snap-on function is not constant over time.
  • the first function is generally provided by the external peripheral surface of the plug, while the second function results from the cooperation of the bosses with the groove.
  • connection piece of the above type Given the material of a connection piece of the above type, it is understood that the successive plugging and unpicking of the electrical connection branch relative to the well subjects the wings of the tubular plug to stresses inducing a fatigue poorly supported by the constituent material which quickly loses its characteristic of elastic reaction.
  • the wings of the tubular plug then have a tightened state with filling of the interval separating their edges or facing axial edges.
  • the protruding bosses occupy a recessed position and are no longer able to contribute to the establishment of the first surface contact function, nor to provide suitable mechanical support by snap-fastening inside the throat of the well.
  • the object of the invention is to remedy such a drawback by proposing structural modifications to the electrical connection end pieces with tubular plug or socket specifically designed to cooperate with a conductive well internally delimiting a peripheral groove.
  • the constructive proposals according to the present invention aim to improve the mechanical characteristics of the electrical connection end pieces of the tubular plug type, whether these end pieces are straight or bent.
  • the electrical connection tip is characterized in that the branch in the form of a plug or socket has an outside diameter slightly greater than the inside diameter of the well, delimits in its wall at least one window and contains a constrained metal clip, comprising at least one boss engaged in the window and projecting out of the external envelope of the sleeve to locally give it a cross-section greater than the internal diameter of the well.
  • Figs. 1 and 2 show an electrical connection tip 1 intended to establish the connection with a terminal 2 of an apparatus or accessory 3 for producing or using electrical energy.
  • Terminal 2 is of the type comprising a conductive cylindrical well 4 having a closed bottom 5 and delimiting, set back from its open inlet edge 6 , a groove 7 .
  • the well 4 is made of a conductive material having good electrical conductivity and good corrosion resistance, for example an alloy of aluminum, copper or, again, stainless steel.
  • the well 4 is surrounded by a ferrule 8 , made of insulating material, rising notably above the inlet edge 6 .
  • the ferrule 8 is carried by the member 3 whether or not it is an integral part of the latter.
  • the electrical connection terminal 1 is shown in the drawing in the form of a straight terminal, but it should be considered that the object of the invention would also apply to a terminal of the angled type, as is known in technical.
  • the electrical connection endpiece comprises a branch 9 for crimping and electrical connection with a conductor 10 .
  • the branch 9 delimits two wings 11 , preferably corrugated or otherwise wavy, intended to establish a strong electrical and mechanical connection after crimping on the conductor 10 .
  • the electrical connection end piece also includes an electrical connection branch 12 intended to cooperate with the well 4 .
  • the branch 12 is secured to the branch 9 by means of a part 13 , called the median, of mechanical connection.
  • the electrical connection branch 12 is produced in the form of a tubular plug or socket obtained by rolling two wings 14 whose edges or edges 15 facing each other are kept at a distance to delimit between them an axial slot 16 .
  • the tubular plug 12 has, in the idle state, a neighboring diameter by excess of the internal diameter of the well 4 .
  • the branch 12 also comprises an end portion 17 of diameter or cross section slightly smaller than that of the tubular plug, so as to facilitate the introduction of the plug into the well 4 from the inlet edge 6 .
  • the end portion 17 is formed in the form of an edge rolled inwardly or alternatively, preferably, by tongues 18 , in the form of petals bent inwardly.
  • At least one and preferably the two wings 14 have, in a transverse straight plane P , each a window 19 of any suitable shape, for example rectangular, formed in the angular part included between the edge 15 and the axial plane P1 perpendicular to an axial plane P2 passing through the slot 16 .
  • the windows 19 are provided to allow passage to bosses 20 which are projecting by an elastic clip 21 arranged constrained inside the tubular plug 12 .
  • the clip 21 is preferably made of a material having a high capacity for elastic reaction relative to that constituting the end piece and, preferably, of steel.
  • the clip 21 is in the form of a cylindrical ring having an axial opening 22 .
  • the bosses 20 are formed near edges 23 delimiting the opening 22 , so that they can be placed in coincidence with the windows 19 , when the opening 22 is aligned with the plane P2 and, consequently, the slot 16 . In this position, the two bosses 20 then protrude simultaneously through the windows 19 by a measurement such that the local cross-section of the tubular plug is then greater than the internal diameter of the well 4 .
  • the clip 21 is placed inside the tubular plug 12 to be kept under permanent stress, so that its reaction to the elastic deformation which is imposed on it tends to urge the wings 14 in relative opening.
  • connection end piece according to the invention can be inserted by the plug 12 inside the well 4 by engagement of the end portion 17 having the effect of gradually urging the wings 14 in radial constriction enabled through slot 16 .
  • This constraint is retransmitted to clip 21 which is thus elastically stressed.
  • the insertion of the tubular plug 12 continues axially in the direction of the arrow f1 with establishment of a surface contact function widely distributed between the outer periphery of the tubular plug and the inner peripheral surface of the well 4 due to the clip reaction 21 .
  • An additional constraint is imposed on the clip 21 during the engagement of the bosses 20 from the entry edge 6 , without however this additional constraint being applied to the wings 14 .
  • the bosses 20 snap automatically into the groove 7 , when the plane P coincides with the plane P3 of the latter, by the simple reaction of the clip 21 .
  • bosses 20 provide mechanical support between the tubular plug and the well 4 due to their engagement in the peripheral groove 7 .
  • These bosses also contribute to firmly pressing the part of the peripheral wall of the plug 12 situated opposite the plane P1 relative to themselves and thus contribute to maintaining the widest possible surface contact for the 'establishment of an electrical connection function.
  • the extraction of the plug 12 is obtained by acting on the end piece 1 by pulling, so as to cause the bosses to be erased through the windows 19 to facilitate the axial sliding of the plug or tubular sleeve relative to the well 4 .
  • the clip 21 After axial release, the clip 21 returns to its initial position by constraining the wings 14 in radial opening.
  • successive plugs and unplugs do not produce, as in the connection fittings currently known, a deflection of the wings at a point such that the outside diameter of the tubular plug or socket becomes less than that internal of the well 4 at the point of n '' establish a random electrical connection, especially in the event of vibrations.
  • the socket is also advantageously made so that the axial distance d , between the transverse straight plane P of the socket passing through the windows 19 and the plane P1 from the extreme edge of the sleeve, delimited by the terminal part 17 , either substantially equal to or slightly less than the axial distance D separating the transverse plane P3 from the groove 7 from the plane defined by the bottom 5 of the well 4 .
EP89420032A 1988-02-04 1989-02-03 Elektrischer Endanschluss Withdrawn EP0327478A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8801478A FR2627018B1 (fr) 1988-02-04 1988-02-04 Embout de raccordement electrique
FR8801478 1988-02-04

Publications (1)

Publication Number Publication Date
EP0327478A1 true EP0327478A1 (de) 1989-08-09

Family

ID=9363069

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89420032A Withdrawn EP0327478A1 (de) 1988-02-04 1989-02-03 Elektrischer Endanschluss

Country Status (3)

Country Link
EP (1) EP0327478A1 (de)
FR (1) FR2627018B1 (de)
PT (1) PT89644B (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU640573B2 (en) * 1991-09-03 1993-08-26 General Motors Corporation Spark plug connector and terminal assembly therefor
EP0660474A1 (de) * 1993-12-23 1995-06-28 General Motors Corporation Zündkabelzusammenbau
EP0718927A1 (de) * 1993-10-29 1996-06-26 INTERLOCK CORPORATION (a Michigan corporation) Steckverbindersystem mit geringer Einsteckkraft
EP2112721A1 (de) * 2008-04-23 2009-10-28 Satrotec AG Dichte Steckerverbindung für Hochspannungskabel im Automobilbau

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1320252A (fr) * 1961-02-27 1963-03-08 Amp Inc Connecteurs électriques
US3689866A (en) * 1970-09-11 1972-09-05 William Kelly Heavy duty cable connector
EP0067780A1 (de) * 1981-06-11 1982-12-22 Société à Responsabilité Limitée L'ELECTRICFIL INDUSTRIE Winkelendstück für elektrische Verbindungen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1320252A (fr) * 1961-02-27 1963-03-08 Amp Inc Connecteurs électriques
US3689866A (en) * 1970-09-11 1972-09-05 William Kelly Heavy duty cable connector
EP0067780A1 (de) * 1981-06-11 1982-12-22 Société à Responsabilité Limitée L'ELECTRICFIL INDUSTRIE Winkelendstück für elektrische Verbindungen

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU640573B2 (en) * 1991-09-03 1993-08-26 General Motors Corporation Spark plug connector and terminal assembly therefor
EP0718927A1 (de) * 1993-10-29 1996-06-26 INTERLOCK CORPORATION (a Michigan corporation) Steckverbindersystem mit geringer Einsteckkraft
EP0660474A1 (de) * 1993-12-23 1995-06-28 General Motors Corporation Zündkabelzusammenbau
EP2112721A1 (de) * 2008-04-23 2009-10-28 Satrotec AG Dichte Steckerverbindung für Hochspannungskabel im Automobilbau

Also Published As

Publication number Publication date
FR2627018B1 (fr) 1990-08-03
PT89644B (pt) 1994-10-31
FR2627018A1 (fr) 1989-08-11
PT89644A (pt) 1989-10-04

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