EP1057227B1 - Borne de connexion electrique pourvue d'une cage - Google Patents

Borne de connexion electrique pourvue d'une cage Download PDF

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Publication number
EP1057227B1
EP1057227B1 EP99908899A EP99908899A EP1057227B1 EP 1057227 B1 EP1057227 B1 EP 1057227B1 EP 99908899 A EP99908899 A EP 99908899A EP 99908899 A EP99908899 A EP 99908899A EP 1057227 B1 EP1057227 B1 EP 1057227B1
Authority
EP
European Patent Office
Prior art keywords
cage
contact
electrical connection
connection terminal
terminal according
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
EP99908899A
Other languages
German (de)
English (en)
Other versions
EP1057227A1 (fr
Inventor
Dominique Rozet
Antoine Peron
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.)
FCI SA
Original Assignee
FCI SA
Framatome Connectors International SAS
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
Priority claimed from FR9801851A external-priority patent/FR2775131B1/fr
Priority claimed from FR9801852A external-priority patent/FR2775132B1/fr
Priority claimed from FR9801850A external-priority patent/FR2775130B1/fr
Application filed by FCI SA, Framatome Connectors International SAS filed Critical FCI SA
Publication of EP1057227A1 publication Critical patent/EP1057227A1/fr
Application granted granted Critical
Publication of EP1057227B1 publication Critical patent/EP1057227B1/fr
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
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/10—Sockets for co-operation with pins or blades
    • H01R13/11—Resilient sockets
    • H01R13/114—Resilient sockets co-operating with pins or blades having a square transverse section
    • 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
    • H01R13/15—Pins, blades or sockets having separate spring member for producing or increasing contact pressure
    • H01R13/18—Pins, blades or sockets having separate spring member for producing or increasing contact pressure with the spring member surrounding the socket
    • 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
    • H01R13/10—Sockets for co-operation with pins or blades
    • H01R13/11—Resilient sockets
    • H01R13/113—Resilient sockets co-operating with pins or blades having a rectangular transverse section

Definitions

  • the present invention relates to female electrical connection terminals consisting of a one-piece contact, made of cut and bent sheet, these terminals being intended to receive a pin, and especially a pin of square cross section, and of a protective cage.
  • EP-A-658 952 additionally shows an electrical connection terminal with a cage that has inwardly projecting means which limit the extent to which the contact blades come together and which keep them prestressed in an outward direction.
  • the purpose of the present invention is especially to provide an electrical connection terminal of the type defined above, which ensures a good guidance of the contact blades when a pin is inserted.
  • the invention proposes a terminal characterized in that the contact blades each have, at the point where they bear on the tab, a lateral projection which engages in a window made on each side of the tab in the cut wall; this window limits the movement of the projections; it allows them to move apart.
  • the invention also proposes a terminal characterized in that the cage has inwardly projecting means which limit the extent to which the contact blades come together and keep them prestressed, these means consisting of a cut and bent tab attached to the rest of the cage only at the rear.
  • the cage must be fixed to the contact.
  • it may be crimped to it.
  • the base of the contact may be joined to the shank by a region whose edges have projecting tabs which, together with the rear edge of the base, define a region in which the cage is crimped by bending over the tongues located at the rear of the cage.
  • the faces of the cage are advantageously extended forwards by converging noses which are intended to keep a pin centred while it is being inserted into the terminal and thus to protect the contact blades.
  • the contact blades extend two of the faces of the tubular base forwards and each has a longitudinal protuberance for reinforcement.
  • This protuberance increases the stiffness of the blades, thereby increasing the contact force that they are capable of applying to the pin and making them less fragile.
  • the end of the blades will be shaped so that the regions coming into contact with the pin have an outwardly flaring convex shape in order to make it easy for the pin to enter.
  • the tubular base consists of a portion of cut sheet having four 90° bends, one of the lateral edges of the portion having a central notch into which a projection of corresponding shape on the other lateral edge fits, in a face other than those extended by the blades.
  • Such a contact will generally be made of a material having a high electrical conductivity, especially pure copper or a copper alloy. Since copper has relatively poor mechanical properties, even in the alloy state, the invention also proposes an electrical contact terminal consisting of a contact of the abovementioned kind and a protective cage of rectangular section surrounding the body, which is provided with means for crimping it onto the contact and protects the contact from being crushed. This cage may also be provided for keeping the blades under a prestress which makes it possible to achieve a higher bearing force on the pin.
  • the terminal shown in the figures comprises a contact 10, generally made of a copper-based alloy, and a protective cage 30, generally made of steel.
  • the contact 10 may be regarded as having a rear shank for permanent connection to a conductor and a front body intended to receive a male contact pin of square cross section.
  • the shank shown is intended to be crimped onto a conductor and, for this reason, has two sets of tongues 12 and 14 which are respectively intended to be crimped onto the core and onto the sheath of an electrical wire (not shown). It could also be provided with wire insulation-displacement flanks.
  • the contact body has a tubular base 16 of rectangular cross section, formed by four 90° bends from a cut sheet. Two of the faces of the base 16 are extended forwards by contact blades 18. These blades are bent at their root and are shaped so that they converge forwards and then have a convex region which bears on the pin when the latter has been put into place. The flared end part of the blades makes it easy for the pin to be inserted.
  • the base since it is formed by bending, has two edges which must be joined together.
  • This join is made in one of the two faces of the base which are not provided with blades.
  • the join may comprise interlocking. In the case illustrated in Figure 3, this is achieved by providing, in one of the edges, a notch 22 into which a projection 24 of corresponding shape on the other piece engages.
  • the shank has the shape of a trough, the tongues 12 and 14 of which project in a direction transverse to the blades 18.
  • the contact could also be formed with tongues approximately parallel to the blades.
  • the base 16 is joined to the shank by a region which, in the embodiment illustrated, is intended to allow the cage 30 to be fitted by crimping.
  • This intermediate joining region is in the form of a trough which extends that of the shank, but each of its edges has a projecting tab 26.
  • the region lying between the rear edge of the base and the tabs is used for fitting the cage by crimping, as will be seen later.
  • the contact shown in Figures 2 and 3 also includes an outwardly facing boss 28 in the middle of at least one of the faces extended by a blade 18.
  • This boss may be obtained by press deformation during the manufacture, before bending. It is intended to serve as a bearing surface for a locking finger provided on the cage and to limit the deformation of this finger.
  • the cage fulfils several roles. It protects the contact from being crushed. It protects the blades 18, while guiding the complementary pin as it is being inserted. Together with the contact, it forms a lockable terminal in the insulator of a connector. Combining the contact 10 with the cage allows a composite, robust and reliable terminal to be formed, even if it has very small dimensions.
  • the cage 30 shown has a main part of rectangular cross section formed by a strip having three 90° bends. One of the end faces extends beyond the rectangular section and forms a protective wall 32 for the locking finger 33 which is cut in the adjacent wall and deformed outwards. This springy finger 33 is intended to lock the terminal in an insulator.
  • a convenient solution illustrated in Figures 1 to 4 consists in making, in the wall 32, slots formed by cutting and sinking of two fingers 35. Two lugs 34 projecting from the other edge penetrate these slots and are bent over onto the fingers. They thus lock the cage without in any way projecting outwards from the cage.
  • the cage is extended rearwards by two tongues 36 of width corresponding to the gap between the base 16 and one of the tabs 26. These tongues 36 are intended to be crimped in the gap, by bending them as indicated in the figures, after the cage has been fitted.
  • the faces of the cage are extended forwards by converging noses 38 intended to keep a pin centred while it is being inserted into the terminal and thus to protect the contact blades 18.
  • the contact blades 18 will be prestressed, which tends to bring them into contact with each other. However, once the terminal has been assembled, they are kept apart, by a distance which is less than the thickness of the pin intended to be inserted, by means forming part of the cage.
  • These means consist, in the case illustrated, of a slash 40 directed inwards and made in that side wall of the cage which does not form the protective wall 32. Thus, there is no risk of interference between the slash 40 and the lugs 34. Instead of being placed in that face of the cage which is on the same side as the "stitch" which closes the base of the contact body, the slash could be made on the opposite side.
  • the role of the locking finger 33 is conventional. In the case of the terminal shown, this finger is protected by the wall 32. Its springiness tends to make it project. To prevent it from being accidentally pressed inwards and deformed to a point such that it could then no longer fulfil its locking function, the deformation is limited by it coming into contact with the boss 28 on the contact.
  • the terminal shown in the Figures 5 and 6 comprises a contact 10, generally made of a copper-based alloy, and a protective cage 30, generally made of steel.
  • the blades may be reinforced and stiffened by a longitudinal protuberance 20, formed by deformation in a press.
  • the protuberances which generally face inwards, mean that there is no additional thickness.
  • the contact blades 18 each have, in their convex region intended to bear against the pin, a lateral projection 44 whose function will be explained later.
  • the base since it is formed by bending, has two edges which must be joined together.
  • This join is made in one of the two faces of the base which are not provided with blades.
  • the join may comprise interlocking. In the case illustrated in Figure 7, this is achieved by providing, in one of the edges, a notch 22 into which a projection 24 of corresponding shape on the other piece engages.
  • This join or "stitch" is located in that face of the base which lies on the opposite side from that of the lateral projections 44.
  • the shank has the shape of a trough, the tongues 12 and 14 of which project in a direction transverse to the blades 18.
  • the contact could also be formed with tongues approximately parallel to the blades.
  • the base 16 is joined to the shank by a region which, in the embodiment illustrated, is intended to allow the cage 30 to be fitted by crimping.
  • This intermediate joining region is in the form of a through which extends that of the shank, but each of its edges has a projecting tab 26. The region lying between the rear edge of the base and the tabs is used for fitting the cage by crimping, as will be seen later.
  • Means are provided or. the cage for keeping, when not in use, the blades 18 apart by a distance which is less than the thickness of a pin but where they have a prestress which tends to move them closer together.
  • these means consist of a tab 40 cut and centred inwards, attached only to the rear of the cage. Its inwardly convex portion takes the bearing of the lateral projections 44.
  • a window 46 is made in the cut wall. Its width may be just greater than that of the projections in order to guide them. It is preferable to make the tab 40 in the opposite face to that which closes the cage.
  • the terminals are advantageously delivered in the form of a tape, all the shanks still being joined to a residual strip 52 ( Figure 8).
  • the contacts are manufactured by cutting them from a reel of sheet, generally copper sheet, in order to form blanks, and then by bending in order to end up with the shape shown in Figure 4.
  • An L-shaped joining foot 48 is formed by cutting a slot 50 so as to allow the blank to be rotated through one quarter of a turn during manufacture. This simplifies the construction of the tools. By having the slot 50 face the rear with respect to the direction of advance f of the strip during manufacture, it is easier to cut and bend the blanks and there is a reduced risk of buckling. By making that part of the blank which is intended to form the body (Figure 7) face the front, in the direction f, helps to achieve this same result.
  • the cages are manufactured separately, generally made of thin steel sheet, these then being slipped onto the contacts. Once a cage is in place, the tongues 36 are folded down inwards in order to crimp the cage onto the contact.
  • the blades are reinforced and stiffened by forming a longitudinal protuberance 20, formed by deformation in a press.
  • the protuberances will generally face inwards and do not result in an additional thickness. They start in front of the root of the blades and stop at the convex part. That part of the blades which is intended to bear on the pin may be wider than the non-bearing part of the blade.
  • the shank has the shape of a trough, the tongues of which project in a direction transverse to the blades 18.
  • the contact could also be formed with tongues approximately parallel to the blades. Wire insulation-displacement flanks could likewise be provided.
  • the base 16 is joined to the shank by a region which, in the embodiment illustrated, is intended to allow a cage 30 to be fitted by crimping.
  • This intermediate joining region is in the form of a trough which extends that of the shank, but each of its edges has a projecting tab 26.
  • the region lying between the rear edge of the base and the tabs is used for fitting a cage by crimping, as will be seen later.
  • the contact shown in Figure 3 also includes an outwardly facing boss 28 in the middle of at least one of the faces extended by a blade 18.
  • This boss may be obtained by press deformation during the manufacture, before bending. It is intended to serve as a bearing surface for a locking finger provided on the cage and to limit the deformation of this finger.
  • the contact 10 generally made of a copper-based alloy, is advantageously combined with a protective cage 30 which, in the case shown, fulfils several roles. It protects the contact from being crushed. It protects the blades 18, while guiding the complementary pin as it is being inserted. Together with the contact, it forms a lockable terminal in the insulator of a connector. Combining the contact 10 with the cage allows a composite, robust and reliable terminal to be formed, even if it has very small dimensions.
  • the cage 30 shown has a main part of rectangular cross section formed by a strip having three 90° bends. One of the end faces extends beyond the rectangular cross section and forms a protective wall 32 for a locking finger 33 which is cut in the adjacent wall and deformed outwards. This springy finger 33 is intended to lock the terminal in an insulator.
  • the cage is kept closed by two lugs 34 on one of the edges being engaged in slots in the wall 32 and by these lugs being folded down.
  • a window 35 made in the base 16 ( Figure 9) allows the rear lug to be folded down.
  • the cage is extended rearwards by two tongues 36 of width corresponding to the gap between the base 16 and one of the tabs 26. These tongues 36 are intended to be crimped in the gap, by giving them the shape shown in Figure 3, after the cage has been fitted.
  • the faces of the cage are extended forwards by converging noses 38 intended to keep a pin centred while it is being inserted into the terminal and thus to protect the contact blades 18.
  • the contact blades 18 will be prestressed, which tends to bring them into contact with each other. However, once the terminal is assembled, they are kept apart by a distance which is less than the thickness of the pin, for example by one or more inwardly facing slashes 40 made in one or both of the lateral faces of the cage (the faces orthogonal to the contact blades).
  • the contacts are manufactured by cutting them from a reel of sheet, generally copper sheet, and then by bending in order to end up with the shape shown in Figure 10.
  • An L-shaped portion 44 is formed so as to allow the contact to be rotated through one quarter of a turn during manufacture. This simplifies the construction of the tools. It may have the orientation shown or the opposite orientation with respect to the direction of advance of the sheet.
  • the cages are manufactured separately, generally made of thin steel sheet, these then being slipped onto the contacts. Once a cage is in place, the tongues 36 are folded down inwards in order to crimp the cage onto the contact.
  • the contact can be used with a cage of a type different from that described, or even without a cage.
  • a material which is more springy and is mechanically stronger than copper will generally be used to make the contact.
  • the terminal can be used with a contact of a type other than that which has been described by way of example, and two slashes 40 may be provided.

Landscapes

  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Motor Or Generator Frames (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)

Claims (12)

  1. Borne de connexion électrique femelle constituée d'un contact monobloc (10) fait de tôle découpée et pliée, comprenant un fût arrière destinée à être raccordée en permanence à un conducteur et un corps avant ayant une base de section transversale rectangulaire, dont les deux faces opposées se prolongent vers l'avant sous la forme de lames de contact (18) qui convergent et d'une cage de protection de section transversale rectangulaire qui entoure le corps, la cage (30) comprenant au moins un moyen (40) faisant saillie vers l'intérieur, qui limite l'étendue dans laquelle les lames de contact (18) se rejoignent et qui les maintient dans un état de précontrainte orientée vers l'extérieur, le moyen (40) faisant saillie vers l'intérieur étant formé dans une paroi latérale de la cage,
    caractérisée en ce que
    les lames de contact (18) comportent chacune, au niveau de l'endroit où elles prennent appui sur le moyen (40) faisant saillie vers l'intérieur, une saillie latérale (44) qui s'engage dans une fenêtre (46) ménagée dans la paroi latérale, de chaque côté du moyen (40) faisant saillie vers l'intérieur.
  2. Borne de connexion électrique selon la revendication 1, caractérisée en ce que le moyen en saillie (40) consiste en un crevé orienté vers l'intérieur réalisé dans une face latérale de la cage (30).
  3. Borne de connexion électrique selon la revendication 1, caractérisée en ce que le moyen en saillie (40) consiste en une languette découpée et pliée et solidaire du reste de la cage uniquement par son extrémité arrière.
  4. Borne de connexion électrique selon l'une des revendications qui précèdent, caractérisée en ce que la base (16) comprend deux bords reliés l'un à l'autre dans une face de la base dépourvue de lame et vis-à-vis des saillies latérales.
  5. Borne de connexion électrique selon l'une des revendications qui précèdent, caractérisée en ce que la cage consiste en une bande comportant trois pliages à 90° et en ce qu'une des faces d'extrémité se prolonge au-delà de la section rectangulaire du côté opposé à celui comprenant la languette.
  6. Borne de connexion électrique selon la revendication 5, caractérisée en ce que l'autre face d'extrémité comporte deux cosses de fixation orientées vers le bas (34) passant dans des fentes ménagées dans la face d'extrémité en saillie.
  7. Borne de connexion électrique selon l'une des revendications qui précèdent, caractérisée en ce que la cage comporte un doigt élastique (33) pour bloquer la borne en position, ce doigt faisant saillie vers l'extérieur, à partir du côté où la face de la cage fait saillie.
  8. Borne de connexion électrique selon l'une des revendications 1 à 3, caractérisée en ce que les lames s'étendent à partir de deux des faces de la base et que chacune comporte une protubérance longitudinale de renforcement (20).
  9. Borne de connexion électrique selon la revendication 8, caractérisée en ce que l'extrémité des lames est profilée de manière à avoir une forme convexe dans les zones destinées à venir en contact avec un contact mâle complémentaire.
  10. Borne de connexion électrique selon la revendication 8 ou 9, caractérisée en ce que la base tubulaire (16) consiste en une portion comprenant quatre pliages à 90°, dont un bord comporte une encoche centrale (22) dans laquelle une protubérance (24) de configuration correspondante ménagée sur l'autre bord vient s'adapter.
  11. Borne de connexion électrique selon la revendication 7, caractérisée en ce que le contact comporte un bossage (28) orienté vers l'extérieur disposé de manière à faire office de portée pour le doigt élastique (33) pour limiter la déformation dudit doigt.
  12. Borne de connexion électrique selon une quelconque des revendications qui précèdent, caractérisée en ce que ledit moyen (40) faisant saillie vers l'intérieur consiste en une entaille réalisée au moyen d'au moins deux traits de coupe parallèles à l'axe principal du contact.
EP99908899A 1998-02-16 1999-02-15 Borne de connexion electrique pourvue d'une cage Expired - Lifetime EP1057227B1 (fr)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
FR9801850 1998-02-16
FR9801851A FR2775131B1 (fr) 1998-02-16 1998-02-16 Borne de connexion electrique a cage
FR9801852A FR2775132B1 (fr) 1998-02-16 1998-02-16 Borne de connexion electrique a cage, a precontrainte des lames de contact
FR9801851 1998-02-16
FR9801850A FR2775130B1 (fr) 1998-02-16 1998-02-16 Contact electrique femelle et borne comportant un tel contact
FR9801852 1998-02-16
PCT/EP1999/000973 WO1999041807A1 (fr) 1998-02-16 1999-02-15 Borne de connexion electrique pourvue d'une cage

Publications (2)

Publication Number Publication Date
EP1057227A1 EP1057227A1 (fr) 2000-12-06
EP1057227B1 true EP1057227B1 (fr) 2003-05-07

Family

ID=27253415

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99908899A Expired - Lifetime EP1057227B1 (fr) 1998-02-16 1999-02-15 Borne de connexion electrique pourvue d'une cage

Country Status (4)

Country Link
EP (1) EP1057227B1 (fr)
AT (1) ATE239986T1 (fr)
DE (1) DE69907641T2 (fr)
WO (1) WO1999041807A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19835020C2 (de) * 1998-08-03 2001-02-08 Tyco Electronics Logistics Ag Buchsenkontakt
EP1122830A1 (fr) * 2000-01-31 2001-08-08 Tyco Electronics AMP GmbH Douille de contact
US6524142B2 (en) 2000-01-31 2003-02-25 Tyco Electronics Amp Gmbh Unitary contact spring
EP1122832A3 (fr) * 2000-01-31 2001-09-26 Tyco Electronics AMP GmbH Douille de contact
EP1122831A3 (fr) * 2000-01-31 2001-09-26 Tyco Electronics AMP GmbH Douille de contact
EP1148588A3 (fr) * 2000-01-31 2001-11-14 Tyco Electronics AMP GmbH Douille de contact
US6918798B2 (en) * 2003-07-15 2005-07-19 Molex Incorporated Female terminal with flexible sidewalls and flat angled contacts
DE102007049055B3 (de) * 2007-10-11 2009-03-26 Tyco Electronics Amp Gmbh Vibrationsdämpfendes Kontaktelement
EP2328236B1 (fr) * 2009-10-19 2012-08-15 Delphi Technologies, Inc. Elément de raccordement électrique
JPWO2022270174A1 (fr) * 2021-06-22 2022-12-29

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8508964U1 (de) * 1985-03-26 1986-12-18 Grote & Hartmann Gmbh & Co Kg, 5600 Wuppertal Kastenfeder
DE9201047U1 (de) * 1992-01-29 1993-06-03 Grote & Hartmann Gmbh & Co Kg, 5600 Wuppertal Doppelflachfederkontakt mit Außenüberfeder
US5281175A (en) * 1993-03-30 1994-01-25 General Motors Corporation Female electrical terminal
FR2713833B1 (fr) * 1993-12-15 1996-02-09 Cinch Connecteurs Sa Organe femelle de contact électrique et élément de boîtier de connecteur électrique destiné à recevoir un tel organe.
JP3319292B2 (ja) * 1996-07-26 2002-08-26 住友電装株式会社 雌側端子金具

Also Published As

Publication number Publication date
DE69907641T2 (de) 2004-04-15
WO1999041807A1 (fr) 1999-08-19
EP1057227A1 (fr) 2000-12-06
DE69907641D1 (de) 2003-06-12
ATE239986T1 (de) 2003-05-15

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