EP0541465B1 - Vorrichtung zum Verbinden eines elektrischen Kabelschuhes mit einer Anschlussklemme - Google Patents

Vorrichtung zum Verbinden eines elektrischen Kabelschuhes mit einer Anschlussklemme Download PDF

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Publication number
EP0541465B1
EP0541465B1 EP19920420396 EP92420396A EP0541465B1 EP 0541465 B1 EP0541465 B1 EP 0541465B1 EP 19920420396 EP19920420396 EP 19920420396 EP 92420396 A EP92420396 A EP 92420396A EP 0541465 B1 EP0541465 B1 EP 0541465B1
Authority
EP
European Patent Office
Prior art keywords
cap
terminal
tube
arrangement according
extensions
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
EP19920420396
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English (en)
French (fr)
Other versions
EP0541465A1 (de
Inventor
Jean Trigon
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 EP0541465A1 publication Critical patent/EP0541465A1/de
Application granted granted Critical
Publication of EP0541465B1 publication Critical patent/EP0541465B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/20—Coupling parts carrying sockets, clips or analogous contacts and secured only to wire or cable
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/20—Pins, blades, or sockets shaped, or provided with separate member, to retain co-operating parts together
    • 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 electrical cable equipment, more particularly for connection with a connection terminal, such as that of a spark plug of a heat engine, preferably of the spark-ignition type.
  • the present invention relates more specifically to connection devices comprising protective caps threaded onto the lugs fitted to such cables and intended to be at least partly mounted on the connection terminals in order to provide leaktight protection of the established electrical connections.
  • connection terminal of an electric cable comprises a crimping part on the cable and a substantially tubular electric connection part, most often split or open, elastically deformable so as to be able to exert a clamping effect on the connection terminal.
  • the connection part is thus responsible for assuming a first electrical connection function and a second mechanical connection function.
  • connection part has, on its internal face, projecting bosses obtained by stamping.
  • bosses When plugged in, the bosses are housed in a groove in the terminal in order to exert relative to the latter a radial tightening force capable of opposing a limited tensile force exerted on the cable.
  • the insertion of the terminal on the olive or the connection terminal is carried out at the right of a narrowing of the diameter and, in general, on a conical part.
  • connection device so as to provide a visual assessment of its plugged in or unplugged state and to provide means capable of establishing a sort of locking of the '' fitting the terminal on the connection terminal.
  • EP-A-0 383 661 recommending a device comprising an elastomer cap having an open end, an elastic deformation zone and a closed end by which the cap is linked to a cable provided, at the end and internally at the cap, a straight thimble comprising a tubular part for plugging into the connection terminal.
  • Such a device also comprises, inside the cap, a rigid said locking tube, made of insulating material, capable of sliding relative to the cap to occupy, by an open terminal part which it has, a first so-called immobilization position in which it surrounds the plug-in part threaded onto the terminal and a second so-called release position in which it is at least partially released from the plug-in part.
  • the bellows has a resistance to elastic deformation greater than the insertion stress, and in such a case, a risk of untimely release is to be feared with the opposite effect from that sought.
  • the bellows on the contrary, have a low resistance to elastic deformation and then successive uses are likely to deform or tire it to the point that the retraction function which it contributes to ensuring for the cap becomes nonexistent and that the plugging in the device then poses subsequent problems.
  • Another object of the invention is to create a locking in the plugged-in position which, to be overcome, requires the development of a force much greater than that required for plugging.
  • Fig. 1 is a sectional elevation of the device according to the invention in its stable position of rest or non-use.
  • Figs. 2 and 3 are cross sections taken along lines II-II and III-III of FIG. 1.
  • Fig. 4 is a partial perspective showing, in more detail, a means constituting the object of the invention.
  • Figs. 5 to 7 are sectional elevations similar to FIG. 1 and illustrating different characteristic operating positions.
  • the connection device comprises a cap 1 made of elastomer or other insulating material of elastic character, which is produced in a substantially cylindrical tubular form.
  • the cap 1 has an open end 2 and a closed end 3 comprising an internal sleeve 5 forming a connection part with an electric cable 6 which has, at the end and internally at the cap 1 , a straight electrical connection terminal 7 .
  • the connection between the sleeve 5 and the cable 6 is chosen to establish by any suitable means an angular and axial immobilization with tightness on the cable 6 .
  • the sleeve 5 is connected to the cap 1 by two elastically stretchable extensions 8 provided with so-called gripping means 9 .
  • These means 9 can consist of projecting legs, ears or shoulders.
  • the extensions 8 are advantageously made of the same material as the cap 1 and the sleeve 5 .
  • the extensions 8 and the means 9 are associated with gripping means 10 which can be formed by a lining made of a rigid or semi-rigid insulating material, possibly extended by rings.
  • the lining 10 is formed, for example, by the snap-fastening of two half-shells 11 a and 11 b ( FIG. 2 ) which surround the extensions 8 and the cable relative to which they can slide.
  • the cap 1 comprises, moreover, a zone 12 of elastic deformation, substantially median transverse, capable of forming an annular outer bead under the action of an axial compression stress applied between the ends of the cap.
  • the electrical connection lug 7 comprises a part 13 for crimping on the cable 6 and a tubular part 14 , preferably non-elastic, said to be plugged into a connection terminal 15 , for example constituted by the olive of the barrel 16 of a spark plug 17 capable of being mounted by a base 18 on the cylinder head of a heat engine, for example with spark ignition.
  • the cap 1 has an end portion 2 , the internal diameter of which is chosen to correspond to the external diameter of the barrel 16 so as to be able, as is apparent from what follows, to establish a tight fitting on the latter with definition of an axial interlocking stop position.
  • the abutment means can be constituted by the extreme peripheral rim 2 a of the end 2 or, more preferably, by a heel 19 formed internally by the cap 1 .
  • the plug-in part 14 is associated with an elastic annular rod 20 which is threaded externally on the part 14 ( fig. 4 ) to be engaged by a part 21 of rectilinear shape which it presents in the bottom of an inclined passage 22 intersecting the section of the tubular part 14 .
  • the corridor 22 is defined by means of a tab or a tongue 23 which is cut from the peripheral wall in the plug-in part 14 and which is bent or inclined externally. The inclination must be considered as descending towards the end of part 14 .
  • Fig. 4 shows that the rod 20 has a shape such that in the state of rest, it is engaged by the part 21 in the passage 22 by surrounding and tightening the tubular part 14 .
  • the shape of the rod 20 is chosen so that the clamping action occurs at two substantially diametrically opposite points and so that an elastic deformation capacity, by moving these points away, can occur.
  • the cap 1 is lined internally with a tube 24 called unlocking, rigid, made of any suitable dielectric material, and which has an almost constant circular section.
  • the tube 24 is extended by two traction branches 25 which are inserted, with the possibility of relative displacement, between the cap 1 and the sleeve 5 .
  • the branches 25 are provided with end anchoring parts 26 which are linked to the gripping means 9 .
  • the anchoring parts 26 may, for example, consist of curved end parts.
  • the branches 25 are formed to comprise, in their zone of connection with the tube 24 , two opposite shoulders 27 and 28 which are intended to cooperate with flanges 29 and 30 respectively presented by the cap 1 and the sleeve 5 .
  • the flanges 29 and 30 are spaced from each other in the rest position to define a relative axial sliding range of the tube 24 inside the cap 1 , during the application, by the gasket 10 , of a tensile and stretching stress at the extensions 8 and at the zone 11 , as is apparent from what follows.
  • the tube 24 has a length chosen to occupy the substantially middle part of the cap 1 and surround, in the rest state according to FIG. 1 , the terminal 7 , while being set back from the open end 2 .
  • the tube 24 has internally a shoulder 31 which surrounds the insertion part 14 and is placed between the open end of the latter and the rod 20 .
  • the shoulder 31 has an axial notch 32 , intended to correspond angularly to the cut tab 23 , and a chamfer 33 , called the engagement, intended to facilitate the insertion on the terminal 15 by proceeding as follows.
  • the device in its state according to FIG. 1 , is engaged by the end 2 in the direction of the arrow f1 ( fig. 5 ) on the terminal 15 , so that the end 2 comes to seal around the barrel 16 until in a stop position determined by the edge 2 a or the heel 19.
  • the terminal 15 penetrates inside the plug-in part 14 where it is brought to meet the rectilinear part 21 of the rod 20 .
  • the terminal 15 makes contact with the part 21 and repels and elastically deforms the rod 20 .
  • This action is made possible by the usual form of the terminal 15 which has a head 15 a cylindro-frusto-conical defining a groove 15b in which the rod 20 engages automatically when the end 2 is fitted into abutment on the barrel 16 , as illustrated in fig. 6 .
  • the maximum insertion position shows that the engagement of the rod 20 in the groove 15 b occurs after an axial thrust exerted on the lining 10 making it possible to subject the zone 12 to a compression deformation to make the bottom of the corridor 22 coincide with the transverse plane notch 15 b .
  • the bead formed by the zone 12 constitutes a visual indicator of a good plugging position in which the mechanical connection and the electrical connection are provided in a reliable and durable manner.
  • the deformation of the zone 12 is made possible, during the action on the lining 10 , by the contact between the shoulder 27 and the flange 29 of the cap 1 .
  • the rod 20 projecting internally through the part 14 , is engaged in the groove 15 b and locks the plug made between the part 14 and the terminal 15 .
  • the terminal 7 is stressed in tension, so that the passage 22 tends to strengthen the penetration of the rod 20 in the groove 15 b which is thus blocked axially, all the more firmly as the traction exerted on the cable 6 is strong.
  • the operator acts by traction in the direction of the arrow f2 ( fig. 6 ) on the lining 10 , so as to cause by stretching extensions 8 the recoil of the tube 24 to the stop position.
  • the shoulder 31 acts on the rod 20 to move it axially, so as to raise the part 21 of the rod 20 inside the inclined passage 22 as far as an extreme position, as illustrated in FIG. 7 .
  • the rod 20 is completely obliterated from the internal section of the tubular plug-in part 14 . This action can be completed by the present of the notch 32 fitting the tab 23 .
  • the action in the direction of the arrow f2 has the effect of stretching the bead 12 and bringing the shoulders 28 into abutment against the flanges 30 ( fig. 7 ).
  • the continuation of the action in the direction of the arrow f2 causes, simultaneously, the recoil of the sleeve 5 driving the cable 6 and that of the terminal part 2 relative to the barrel 16 .
  • the terminal 7 is thus disengaged from terminal 15 .
  • the insertion only involves the sliding of the part 2 on the barrel 16 until it stops by the end 2 a or by the heel 19 with swelling of the zone 12 and the deformation rod 20 via terminal 15 .
  • voluntary de-plugging additionally involves tensioning the extensions 8 .

Landscapes

  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Spark Plugs (AREA)

Claims (8)

  1. Vorrichtung zur Verbindung eines Kabelschuhs (7) eines elektrischen Kabels (6) mit einer Anschlußklemme (15), bestehend einerseits aus einer Elastomerkappe (1), die ein offenes Ende (2), einen elastischen Verformungsbereich (12) und ein geschlossenes Ende (3) aufweist, an dem sie mit einem Kabel (6) verbunden ist, das am Ende und innerhalb der Kappe mit einem geraden Kabelschuh (7) versehen ist, welcher ein vorzugsweise nicht elastisches, rohrformiges Teil (14) zum Einstecken in die Klemme aufweist, und andererseits aus einem starren Rohr (24) aus isolierendem Material innerhalb der Kappe, welches gegenüber der Kappe verschiebbar ist, um eine erste Stellung, eine sogenannte Arretierstellung, und eine zweite Stellung, eine sogenannte Stellung des Lösens des Einsteckteils aus der Klemme, einzunehmen,
    dadurch gekenzeichnet, daß
    - die Kappe (1) nahe bei dem offenen Ende (2) Anschlagmittel (2a, 19) zum axialen Eingriff an der Klemme sowie abgewandt von dem genannten Ende elastisch herausziehbare Verlängerungen (8), die mit einer Innenmuffe (5) zur Verbindung mit dem Kabel verbunden sind, aufweist, wobei die genannten Verlängerungen mit Greifmitteln (9) versehen sind,
    - das Rohr (24) eine Entriegelungsfunktion hat und zwei Zugarme (25), die zwischen Kappe und Muffe verschiebbar in den Verlängerungen eingesetzt sind, um mit den Greifmitteln fest verbunden zu sein, sowie von den genannten Armen abgewandt einen inneren Absatz (31), der auf dem Einsteckteil (14) des Kabelschuhs sitzt, aufweist,
    - das Einsteckteil (14) einen federnden Ring (20) aufweist, der außen angebracht ist und durch eine geneigte Lauffläche (22) eine radiale Klemmfunktion an der Klemme erfüllt und dessen Wirkung durch axiales Verschieben vermittels des Rohrs (24) aufgehoben werden kann.
  2. Vorrichtung nach Anspruch 1,
    dadurch gekennzeichnet, daß die Kappe (1) einen elastischen Verformungsbereich (12), der geeignet ist, bei einem axialen Zusammendrücken einen Außenwulst zu bilden, sowie Verlängerungen (8) aufweist, die einen zweiten elastischen Verformungsbereich bilden, der die Kappe mit den Greifmitteln (9) verbindet und unter Zugeinwirkung in axialer Richtung herausziehbar ist.
  3. Vorrichtung nach Anspruch 1 oder 2,
    dadurch gekennzeichnet, daß die Greifmittel (9) Verankerungsendabschnitte (26) der Arme des Rohrs umfassen.
  4. Vorrichtung nach Anspruch 1,
    dadurch gekennzeichnet, daß das Rohr (24) Anschlagabsätze (27, 28) aufweist, die geeignet sind, mit Kanten (29, 30) zusammenzuwirken, die von der Kappe bzw. der Muffe gebildet werden, um den zwischen diesen existierenden axialen Verschiebungsweg der Kappe zwischen einer ersten Stellung, bei der der Absatz (31) des Rohrs den Ring (20) freigibt, und einer zweiten Stellung, bei der der Absatz (31) unter einer auf die Greifmittel ausgeübten Zugeinwirkung die radiale Klemmfunktion des Rings aufhebt, zu begrenzen.
  5. Vorrichtung nach Anspruch 1 oder 4,
    dadurch gekennzeichnet, daß der Absatz (31) innen durch das Rohr (24) gebildet wird und eine Kerbe in axialer Richtung (32) aufweist, und daß das Einsteckteil (14) des Kabelschuhs eine Zunge (23) besitzt, die ausgeschnitten und nach außen geklappt ist, um der Kerbe zu entsprechen und eine geneigte Lauffläche (22) zu begrenzen, über deren Grund quer der Ring (20) verläuft.
  6. Vorrichtung nach Anspruch 1 oder 4,
    dadurch gekennzeichnet, daß der Ring (20) so geformt ist, daß er mindestens zwei radiale Druckpunkte aufweist und eine Möglichkeit zur federnden Verformung bietet.
  7. Vorrichtung nach Anspruch 6,
    dadurch gekennzeichnet, daß der Ring einen geradlinigen Abschnitt (21) aufweist, der mit der Lauffläche des Einsteckteils in Eingriff ist.
  8. Vorrichtung nach Anspruch 1, 2, 3,
    dadurch gekennzeichnet, daß die Mittel (9) sowie eventuell die Verlängerungen (8) von einer Dichtung (10) aus vorzugsweise isolierendem, halbstarrem Material umgeben sind, die als Greifmittel dient.
EP19920420396 1991-11-05 1992-11-04 Vorrichtung zum Verbinden eines elektrischen Kabelschuhes mit einer Anschlussklemme Expired - Lifetime EP0541465B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9113847 1991-11-05
FR9113847A FR2683398B1 (fr) 1991-11-05 1991-11-05 Dispositif de connexion entre une cosse d'un cable electrique et une borne de raccordement.

Publications (2)

Publication Number Publication Date
EP0541465A1 EP0541465A1 (de) 1993-05-12
EP0541465B1 true EP0541465B1 (de) 1995-04-19

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Application Number Title Priority Date Filing Date
EP19920420396 Expired - Lifetime EP0541465B1 (de) 1991-11-05 1992-11-04 Vorrichtung zum Verbinden eines elektrischen Kabelschuhes mit einer Anschlussklemme

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EP (1) EP0541465B1 (de)
DE (1) DE69202135T2 (de)
FR (1) FR2683398B1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103401095B (zh) * 2013-07-15 2016-04-20 江门市创艺电器有限公司 连接器的导电连接体结构
DE102014008803B4 (de) * 2014-06-11 2016-09-15 Mtu Friedrichshafen Gmbh Zündkerzenstecker
CN109830857B (zh) * 2019-04-03 2024-04-02 贵州电网有限责任公司 一种方便拆卸的双向接线柱
CN109921204B (zh) * 2019-04-03 2024-04-02 贵州电网有限责任公司 一种适用于配电终端检测的接线柱结构
CN112327026B (zh) * 2020-10-31 2022-09-23 贵州电网有限责任公司 一种新型双绕组双计量高压组合式计量箱

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2022669A (en) * 1933-06-29 1935-12-03 Lincoln M Keefe Jack
DE1476313B2 (de) * 1964-03-12 1970-05-21 Kabelwerke Reinshagen GmbH, 56OO Wuppertal-Ronsdorf Verbindungselement für Zündleitungen
FR2643194B1 (fr) * 1989-02-14 1993-12-17 Musorb Application Ferrites Dispositif de connexion electrique d'un cable, notamment d'allumage, sur un plot

Also Published As

Publication number Publication date
EP0541465A1 (de) 1993-05-12
DE69202135D1 (de) 1995-05-24
FR2683398A1 (fr) 1993-05-07
DE69202135T2 (de) 1995-09-28
FR2683398B1 (fr) 1994-02-25

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