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WO1998033238A1 - Borne electrique femelle - Google Patents

Borne electrique femelle Download PDF

Info

Publication number
WO1998033238A1
WO1998033238A1 PCT/EP1998/000338 EP9800338W WO9833238A1 WO 1998033238 A1 WO1998033238 A1 WO 1998033238A1 EP 9800338 W EP9800338 W EP 9800338W WO 9833238 A1 WO9833238 A1 WO 9833238A1
Authority
WO
WIPO (PCT)
Prior art keywords
terminal
contact
receptacle body
blades
blade
Prior art date
Application number
PCT/EP1998/000338
Other languages
English (en)
Inventor
Pier Carlo Bigotto
Original Assignee
Framatome Connectors International S.A.
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 Framatome Connectors International S.A. filed Critical Framatome Connectors International S.A.
Priority to EP98904119A priority Critical patent/EP1012915A1/fr
Priority to BR9807001-0A priority patent/BR9807001A/pt
Priority to CA002278197A priority patent/CA2278197A1/fr
Publication of WO1998033238A1 publication Critical patent/WO1998033238A1/fr

Links

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
    • H01R13/10—Sockets for co-operation with pins or blades
    • H01R13/11—Resilient sockets
    • H01R13/111—Resilient sockets co-operating with pins having a circular transverse section

Definitions

  • the present invention relates to a female electric terminal for a connector.
  • Female electric terminals which substantially comprise a connecting portion fitted to a cable, and a tubular contact portion engaged by a male terminal and in turn comprising a receptacle body and a number of flexible contact blades projecting from the receptacle body and cooperating elastically with the male terminal at respective end contact regions.
  • the terminal is blanked and pressed from flat conducting sheet metal, and the contact blades are normally cut into the lateral wall of the body and extend substantially axially.
  • Terminals of the type briefly described above have several drawbacks.
  • the Joule effect produces heating of the terminal by the current flowing through it in use; and, when heated, a pressed sheet metal part tends to revert to its undeformed shape (i.e. prior to being pressed) .
  • the receptacle body of known female terminals tends to "open” in use when heated, so that the flexible contact blades tend to "draw away” from the male terminal, the contact pressure between the blades and the male terminal is reduced, and the contact resistance, and hence the energy dissipated by the Joule effect, increases.
  • the phenomenon is self-sustaining, and gradually impairs operation of the terminal to the extent of eventually impairing electric contact.
  • a female electric terminal for an electric connector comprising a connecting portion fitted to an electric cable; and a contact portion in turn comprising a receptacle body having a longitudinal axis defining an insertion direction of a complementary male terminal, and at least a first flexible contact blade projecting from a first wall portion of said receptacle body and cooperating elastically with said complementary male terminal at a respective end contact region; characterized in that said first contact blade extends crosswise to said axis of said female terminal; said contact region being located on the opposite side of said axis of said female terminal with respect to said first wall portion.
  • Figure 1 shows a side view of a female electric terminal in accordance with the present invention
  • Figure 2 shows a plan view of the Figure 1 terminal
  • Figure 3 shows a larger-scale view in perspective of the Figure 1 terminal engaged by a complementary male terminal;
  • Figure 4 shows a section along line IV-IV in
  • Figure 5 shows a section along line V-V in Figure 2 , of the female terminal engaged by the complementary male terminal;
  • Figure 6 shows a larger-scale section along line VI-VI in Figure 5;
  • Figure 7 shows a larger-scale front view of the Figure 1 terminal;
  • Figure 8 shows a side view of a variation of the
  • Number 1 in Figures 1, 2 and 7 indicates a female electric terminal for a known electric connector (not shown) .
  • Terminal 1 is blanked and pressed from flat conducting sheet metal (not shown) .
  • Terminal 1 comprises a connecting portion 2 , which is fitted to an electric cable (not shown) ; and a substantially tubular contact portion 3, which is engaged by a cylindrical pin type complementary male terminal 4 ( Figures 3 to 6) , and comprises a longitudinal axis A defining the insertion direction of terminal 4.
  • contact portion 3 comprises a substantially semitubular receptacle body 5 of axis A, from which connecting portion 2 extends rearwards; and three flexible contact blades 6, 7, 8 extending crosswise to axis A, offset axially with respect to one another, and each curved with its concavity facing inwards of contact portion 3.
  • blades 6 and 8 project from a first longitudinal lateral edge 9 of body 5, and each comprise an end contact region 10 cooperating elastically with terminal 4 and located on the diametrically opposite side of axis A with respect to lateral edge 9.
  • Blade 7 is interposed axially between blades 6 and
  • each blade 6, 7, 8 extends inwards of and partially over the lateral edge 11 or 9 of body 5 opposite the lateral edge (9 or 11) from which blade 6, 7, 8 extends, so as to be protected against accidental shock or deformation when handling terminal 1 ( Figure 6) .
  • contact regions 10, 12 of blades 6, 7, 8 define a transverse gap narrower than the diameter of the contact portion of terminal 4, so that blades 6, 7, 8 cooperate elastically with and exert a given preload on terminal 4.
  • Contact regions 10, 12 of blades 6, 7, 8 are defined by respective projections 13 on the blades, which project towards axis A and are elongated longitudinally so as each to define a respective substantially linear contact with terminal 4.
  • Each blade 6, 7, 8 comprises a respective strengthening rib 14 formed by permanent deformation, towards axis A, of a respective intermediate circumferential portion of the blade, and the inner profile of which is tangent to the inner profile of projection 13 ( Figure 6) .
  • Contact portion 3 also comprises a tubular end portion 15 located at the opposite end of body 5 to connecting portion 2, and which acts as a guide for terminal 4.
  • tubular portion 15 is smaller in diameter than body 5, and comprises three impressions 16, which are convex inwards of portion 15 to cooperate with and center terminal 4 during insertion ( Figure 7) .
  • Blades 6, 7, 8 conveniently differ geometrically, so as to have different vibration frequencies. More specifically, blade 7 is wider than blades 6 and 8; and blade 6 is connected differently from blade 8 by being partly integral with tubular portion 15.
  • the Figure 8 variation comprises a second tubular portion 17 similar to portion 15 and interposed axially between contact portion 3 and connecting portion 2 to ensure male terminal 4 is coaxial with contact portion
  • terminal 4 When inserted, terminal 4 contacts blades 6, 7, 8 successively to reduce the insertion force demanded by known terminals in which the contact blades are deformed Q simultaneously.
  • the heating of terminal 1 produced by the Joule effect tends to "open" contact portion 3 and so reduce the curvature of body 5 and part lateral edges 9 and 11.
  • the contact pressure on terminal 4 is increased, thus reducing the contact resistance and the energy dissipated by the Joule effect. This not only provides for improving the efficiency of terminal 1 and establishing stable operating conditions as temperature increases, but also for reducing the cold preload and, hence, the force required to insert male terminal 4.
  • terminal 1 may also be connected to a square-section terminal 4.
  • male terminal 4 may be centered and guided along contact portion 3 in any other manner. And especially when the male terminal is guaranteed coaxial, as for example in the Figure 8 solution, the number of contact blades may be reduced to two or even one.

Landscapes

  • Connector Housings Or Holding Contact Members (AREA)
  • Multi-Conductor Connections (AREA)

Abstract

L'invention concerne une borne électrique femelle (1) pour un connecteur électrique, du type comportant une partie de raccordement (2) fixée à un câble électrique. En outre, l'invention concerne une partie de contact tubulaire (3) en prise avec une borne mâle complémentaire (4), et comportant à son tour un corps formant prise de courant (5) et un certain nombre de lames de contact flexibles (6, 7, 8) se projetant à partir de ce corps (5) et coopérant de manière élastique avec la borne mâle (4) au niveau de zones de contact d'extrémité respectives (10, 12). Les lames de contact (6, 7, 8) s'étendent de manière perpendiculaire à l'axe (A) de la borne femelle (1) à partir des bords latéraux (9, 11) du corps (5) situés en regard des zones de contact respectives (10, 12).
PCT/EP1998/000338 1997-01-24 1998-01-22 Borne electrique femelle WO1998033238A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP98904119A EP1012915A1 (fr) 1997-01-24 1998-01-22 Borne electrique femelle
BR9807001-0A BR9807001A (pt) 1997-01-24 1998-01-22 Terminal elétrico fêmea
CA002278197A CA2278197A1 (fr) 1997-01-24 1998-01-22 Borne electrique femelle

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTO97A000055 1997-01-24
ITTO970055 IT1291470B1 (it) 1997-01-24 1997-01-24 Terminale elettrico femmina.

Publications (1)

Publication Number Publication Date
WO1998033238A1 true WO1998033238A1 (fr) 1998-07-30

Family

ID=11415262

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1998/000338 WO1998033238A1 (fr) 1997-01-24 1998-01-22 Borne electrique femelle

Country Status (5)

Country Link
EP (1) EP1012915A1 (fr)
BR (1) BR9807001A (fr)
CA (1) CA2278197A1 (fr)
IT (1) IT1291470B1 (fr)
WO (1) WO1998033238A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1308737B1 (it) 1999-06-16 2002-01-10 Savio Spa Cerniera per serramenti apribili

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2763848A (en) * 1949-04-01 1956-09-18 Tuchel Ulrich Couplings for electric conductors
US4431256A (en) * 1981-11-03 1984-02-14 The Bendix Corporation Split sleeve socket contact
US5162004A (en) * 1989-05-19 1992-11-10 Yazaki Corporation Multi-terminal electric connector requiring low insertion and removal force
EP0573825A1 (fr) * 1992-06-08 1993-12-15 Molex Incorporated Amélioration d'un ou concernant un cosse
FR2726943A1 (fr) * 1994-11-14 1996-05-15 Amp France Borne electrique femelle d'une seule piece
US5681190A (en) * 1995-05-23 1997-10-28 Cardell Corporation Torsional blade receptacle

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2763848A (en) * 1949-04-01 1956-09-18 Tuchel Ulrich Couplings for electric conductors
US4431256A (en) * 1981-11-03 1984-02-14 The Bendix Corporation Split sleeve socket contact
US5162004A (en) * 1989-05-19 1992-11-10 Yazaki Corporation Multi-terminal electric connector requiring low insertion and removal force
EP0573825A1 (fr) * 1992-06-08 1993-12-15 Molex Incorporated Amélioration d'un ou concernant un cosse
FR2726943A1 (fr) * 1994-11-14 1996-05-15 Amp France Borne electrique femelle d'une seule piece
US5681190A (en) * 1995-05-23 1997-10-28 Cardell Corporation Torsional blade receptacle

Also Published As

Publication number Publication date
EP1012915A1 (fr) 2000-06-28
BR9807001A (pt) 2000-03-14
ITTO970055A1 (it) 1998-07-24
CA2278197A1 (fr) 1998-07-30
IT1291470B1 (it) 1999-01-11

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