EP0320323A1 - Elastische, deformierbare, elektrische Kontaktteile, eingebaut in Verbindern, und deren Herstellungsprozess - Google Patents

Elastische, deformierbare, elektrische Kontaktteile, eingebaut in Verbindern, und deren Herstellungsprozess Download PDF

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Publication number
EP0320323A1
EP0320323A1 EP88402874A EP88402874A EP0320323A1 EP 0320323 A1 EP0320323 A1 EP 0320323A1 EP 88402874 A EP88402874 A EP 88402874A EP 88402874 A EP88402874 A EP 88402874A EP 0320323 A1 EP0320323 A1 EP 0320323A1
Authority
EP
European Patent Office
Prior art keywords
contact
contact member
metal
member according
contour
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Withdrawn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
EP88402874A
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English (en)
French (fr)
Inventor
François Robert Bonhomme
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0320323A1 publication Critical patent/EP0320323A1/de
Withdrawn legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/16—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for manufacturing contact members, e.g. by punching and by bending

Definitions

  • the invention relates to elastically deformable contact members, intended to be incorporated in electrical connectors and to cooperate in particular with contact sockets, as plugs, but also, if necessary, with the conductive tracks of circuit boards. prints. It also relates to the methods of manufacturing such contact members.
  • Electric contact members which are constituted by several oval loops, formed by bending of elastic metal wire, the ends of which are gathered in a sleeve, said loops being arranged parallel to each other so that their assembly constitutes a loop. single oval (French patent n ° 1.426.379 and its certificates of addition filed by the applicant). There are also known electrical contact members formed by cutting a sheet and bending in loop outside the sheet plane (French patent n ° 69.02462 and its certificates of addition also filed by the applicant). In both cases, the elasticity of the contact member is due to the presence of the loop of wire or cut sheet metal, which required at least one folding operation.
  • the invention aims to provide new electrical contact members and a method of manufacturing such members which eliminate this drawback of known contact members.
  • the invention relates to an elastically deformable electrical contact member, essentially characterized in that it consists of a practically flat piece of metal, obtained by cutting or punching, the contour of the part of this member which ensures contact with an associated contact member (socket, printed circuit board, etc.) being such that it allows this part to be compressed elastically in its plane, possibly after treatment of the metal of this part (beryllium copper or the like) ensuring it, in a known manner, the necessary elasticity after the cutting or punching operations.
  • the invention relates to a method of manufacturing an elastically deformable electrical contact member, characterized in that a piece of metal is cut from a practically flat metal strip by giving, to the part of this part which must ensure contact with an associated contact member, a contour such that it allows this part to be compressed elastically in its plane, once the metal of this part has possibly been subjected to a treatment suitable ensuring the necessary elasticity.
  • the metal strip is made of beryllium copper, it is necessary, once the contact is finished after cutting and shaping, to make it undergo a heat treatment.
  • Beryllium copper is supplied in strips, not heat treated; it is "soft" (malleable) and therefore lends itself to folding, bending, shaping.
  • the direction of rolling is of little importance for the configuration of the part, but the contact member can also be produced starting from a metal such as stainless steel or from a phosphorous bronze, the mechanical properties of which are not obtained by a heat treatment but by work hardening during the rolling of the strip (strip in the state: spring, 4/4 hard, 1/2 hard ).
  • One of the advantages of the contact member according to the invention is that, not undergoing shaping (that is to say folding, bending, etc.), it can be made of a metal in the state spring. There is no risk of starting mechanical breaks because there is no bending.
  • the electrical contact members in accordance with the invention can be easily manufactured, by means of the process in accordance with the invention, by simple cutting operations, to be carried out successively on the same cutting press, optionally followed by treatment. conventional, without it being necessary to carry out the usual deformation or folding operations outside the plane of the cut piece, unlike the solution described in the above-mentioned French patent n ° 69.02462, which allows the use of presses for this purpose cutting machines, simplified design.
  • the electrical contact member according to invention 1 consists of a metal part (or metal alloy) practically flat, obtained by cutting or punching (as will be exposed in detail with reference to FIGS. 15 and 16), the outline of part 11 of this member which ensures contact with an associated contact member (as will be explained in detail with regard to FIGS. 13 and 14) being such that it allows this part to be compressed elastically in its plane, as shown diagrammatically by arrows opposite in FIG. 1.
  • the rest of the contact member 1 is constituted by a shank 12 of square or rectangular section intended to be connected by soldering or winding to an electrical conductor.
  • the width 1 measured (parallel to the plane of the original metal strip 2) over the major part of the member contact 1 a value at least equal to the thickness e of the latter or of the metal strip 2.
  • this deformable part 11 has, in substance, the form of a closed lozenge in diamond shape (as shown in FIG. 1), such local weakening can be achieved: - By locally reducing the width 1, during cutting, for example at the four vertices of the inner contour of the loop, as shown in 3 for the contact 1a in FIG.
  • the deformable part 11 of the contact member has the form of a closed loop in the form of a diamond, but other forms are also possible, some of which are illustrated by way of examples in the figures. 6 to 13.
  • FIGS. 6 to 11 and 13 illustrate deformable parts in the form of closed loops while FIG. 12 illustrates a deformable part having a shape other than that of a loop closed.
  • FIG. 6 represents a loop in the form of an isosceles triangle with an obtuse apex, which makes it possible to obtain a contact point, plus a contact generator.
  • FIG. 7 represents a loop formed on one side by a straight part and on the other by a wavy part, this loop making it possible to obtain two contact points, plus a contact generator.
  • the embodiment of FIG. 8, which makes it possible to obtain two contact points twice, differs from that of FIG. 7 by the presence of two corrugated parts instead of only one.
  • the embodiment of FIG. 9, which makes it possible to obtain two contact points twice plus continuity by two other internal contact points, differs from that of FIG.
  • the loop as in the embodiments of Figures 1 to 5, has roughly the shape of a diamond but has a series of local weakenings 13 which, unlike the embodiments of FIGS. 2, 4 and 5, are arranged outside the loop.
  • the loop externally has an oval shape and it is made more easily deformable by the presence of two inner branches 13 arranged in a U which opens opposite the tail 12.
  • the contact member designated here by 1c comprises an oval loop, with two weakenings similar to those of FIG. 2.
  • Figure 12 shows a contact member whose deformable part 11 has, as in Figure 11, an oval outer shape but which is constituted by two branches 14 adjoining the tail 12 and separated by a slot 15 of which the width is sufficient to allow the deformation of the part 11 by bringing these two branches 14 together.
  • the contact member according to the invention can be incorporated into an electrical connector of the usual type, either alone (as shown on the left of FIG. 13), or stacked with at least one identical or similar contact member (as shown to the right of figure 13).
  • FIG. 13 represents in a simplified manner a plug and socket connector and FIG. 14 a connector for a printed circuit board.
  • the contact 1c (or the pair of contacts 1c) can, as a plug, cooperate with a socket preferably not split, such as than a circular profile socket 16, an approximately rectangular profile socket 17 or an approximately oval profile socket 18.
  • a socket preferably not split, such as than a circular profile socket 16, an approximately rectangular profile socket 17 or an approximately oval profile socket 18.
  • the only requirement is that the internal dimension of the socket 16, 17 or 18 is less than the corresponding external dimension (at rest) of the deformable part of the contact member.
  • FIG 14 there is shown a connector 19, for printed circuit boards 20, consisting of a housing 21 of insulating material.
  • this connector comprises guide means (not shown) for the card 20 and cells 22 for contact members such as 1c whose tails 12 pass through the bottom of these cells.
  • the oval (or diamond) shape of the deformable part 11 of each contact member 1c facilitates the introduction of the card 20 and the deformation of this deformable part 11 in its plane which is perpendicular to that of the card.
  • the symmetrical diamond or oval shape of the contact member of FIGS. 1 to 5 makes it possible to obtain the best flexibility for a closed loop.
  • the contact members of FIGS. 11 and 12 are open over a certain length along their axis in order to ensure good flexibility while locating the contact zone not in the middle of the length a of the deformable part 11 but very close to the front face (face located to the left of Figures 1 to 12 and 14 and to the right of Figure 13) the distance b between the front face and the contact area advantageously being between 1/4 and 1/5 of the length a in the case of an open loop ( Figures 11 and 12) while, in the case of a more or less symmetrical closed loop, this ratio changes to 1/2. If a ratio of the order of 1/4 to 1/5 was indeed provided for a closed loop, the effort for the same deformation would be much greater. What is known as "head contact" ( Figures 11 and 12) is interesting for meeting certain French or United States standards.
  • FIGS. 15 and 16 illustrate the method of manufacturing the contact members in accordance with the invention which it has been assumed, by way of example, that they were the contact members 1c of FIGS. 13 and 14.
  • FIGS. 15 and 16 illustrate the method of manufacturing the contact members in accordance with the invention which it has been assumed, by way of example, that they were the contact members 1c of FIGS. 13 and 14.
  • specialists in the subject would be able to adapt this process to the various contact members in accordance with the invention and such, in particular, as those of FIGS. 1 to 12.
  • FIGS. 15 and 16 represent the essential elements of a cutting press, namely a rectilinear guide 25 for a metal strip 2, means shown diagrammatically by an arrow 27 for advancing the metal strip 2 in the guide 25 (the Figures 15 and 16 showing the strip 2 away from the bottom of the guide 25 only to make the drawing clearer) and punches cooperating with dies formed in the bottom of the guide 25, these punches succeeding each other in the direction of the arrow 27 and being driven in synchronism with a reciprocating movement perpendicular to the plane of the bottom of the guide and / or to the plane of the metal strip 2.
  • the cutting press comprises means (not shown) to cut one of the edges or shore 28 of the strip 2 as rigorously rectilinear as possible and to make pilot holes 29 in this strip 2 at constant distance from the shore 28 and at a constant distance from each other, these holes 29 cooperating with means (not shown) which advance the metal strip 2 intermittently by distance (or “step") equal to the above gap between the holes 29.
  • a first punch 30, which cooperates with a die 31 is arranged so as to form the inner contour 32 of the deformable part 11 of the contact member 1c, by punching a drop 33, while a second punch 34, which cooperates with a matrix 35, is arranged so as to form the entire outer contour 36 of the contact member 1c, so that the contacts 1c fall loose at the rate of outward strokes (shown schematically by arrows 37) of the punches 30 and 34.
  • a first punch 38 which cooperates with a matrix 39, is arranged so as to form the major part of the external half-contour of two neighboring contact members 1c, by punching a drop 40, so that contact blanks 41 remain adjacent to the strip by their two longitudinal ends.
  • the second punch and the second die are identical to the first punch and die 30 and 33 of FIG. 15 and are designated by the same references. In this way, the contacts 1c come out of the cutting press in the direction of the arrow 27 while remaining temporarily held by their longitudinal ends with what remains of the strip 2, which facilitates the subsequent treatment operations (heat treatment, protection electrolytic and others).

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
EP88402874A 1987-12-07 1988-11-16 Elastische, deformierbare, elektrische Kontaktteile, eingebaut in Verbindern, und deren Herstellungsprozess Withdrawn EP0320323A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8716965A FR2624311B1 (fr) 1987-12-07 1987-12-07 Perfectionnements aux organes de contact electrique elastiquement deformables, a incorporer dans des connecteurs, et a leurs procedes de fabrication
FR8716965 1987-12-07

Publications (1)

Publication Number Publication Date
EP0320323A1 true EP0320323A1 (de) 1989-06-14

Family

ID=9357549

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88402874A Withdrawn EP0320323A1 (de) 1987-12-07 1988-11-16 Elastische, deformierbare, elektrische Kontaktteile, eingebaut in Verbindern, und deren Herstellungsprozess

Country Status (4)

Country Link
US (1) US4932903A (de)
EP (1) EP0320323A1 (de)
JP (1) JPH01194280A (de)
FR (1) FR2624311B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0675568A1 (de) * 1994-03-31 1995-10-04 BITRON S.p.A. Vorrichtung und Methode zur mechanischen und elektrischen Verbindung eines Anschlusses
US5683266A (en) * 1994-03-31 1997-11-04 Bitron S.P.A. Device and method for the mechnical and electrical connection of a terminal
FR2756424A1 (fr) * 1996-11-25 1998-05-29 Cinch Connecteurs Sa Organe de contact electrique femelle

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5173842A (en) * 1991-09-27 1992-12-22 International Business Machines Corporation Electrical assembly with deformable bridge printed circuit board
DE10005053C2 (de) * 2000-02-04 2002-03-14 Yazaki Europe Ltd Verbindungsanordnung für Flachbandkabel oder flexible, gedruckte Schaltungen
DE10164386C1 (de) * 2001-12-28 2003-04-24 Itt Mfg Enterprises Inc Elektrisches Kontaktelement für Steckverbindungen
JP2013149454A (ja) * 2012-01-19 2013-08-01 Molex Inc 端子及びコネクタ
WO2018018948A1 (zh) * 2016-07-27 2018-02-01 广东欧珀移动通信有限公司 移动终端、电源适配器、电源接口及制造方法
JP6945134B2 (ja) * 2016-11-30 2021-10-06 パナソニックＩｐマネジメント株式会社 コネクタ

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3543226A (en) * 1967-08-23 1970-11-24 Ind Bull General Electric Sa S Connectors for printed circuit cards and the like
EP0213820A2 (de) * 1985-08-12 1987-03-11 E.I. Du Pont De Nemours And Company Anpassungsfähiges Anschlusssystem für einen elektrischen Verbinder mit einer Vielzahl von Kontakten

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1426379A (fr) * 1964-12-18 1966-01-28 Perfectionnements apportés aux organes de contact électrique
US3418623A (en) * 1965-10-22 1968-12-24 Elco Corp Cylindrical connector contact
FR2031705A5 (de) * 1969-02-04 1970-11-20 Bonhomme F R
US3820061A (en) * 1972-09-05 1974-06-25 Hewlett Packard Co Connector for printed circuit boards
GB1527035A (en) * 1976-02-21 1978-10-04 Amp Inc Electrical connector assemblies

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3543226A (en) * 1967-08-23 1970-11-24 Ind Bull General Electric Sa S Connectors for printed circuit cards and the like
EP0213820A2 (de) * 1985-08-12 1987-03-11 E.I. Du Pont De Nemours And Company Anpassungsfähiges Anschlusssystem für einen elektrischen Verbinder mit einer Vielzahl von Kontakten

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0675568A1 (de) * 1994-03-31 1995-10-04 BITRON S.p.A. Vorrichtung und Methode zur mechanischen und elektrischen Verbindung eines Anschlusses
US5683266A (en) * 1994-03-31 1997-11-04 Bitron S.P.A. Device and method for the mechnical and electrical connection of a terminal
FR2756424A1 (fr) * 1996-11-25 1998-05-29 Cinch Connecteurs Sa Organe de contact electrique femelle

Also Published As

Publication number Publication date
FR2624311A1 (fr) 1989-06-09
FR2624311B1 (fr) 1990-05-04
JPH01194280A (ja) 1989-08-04
US4932903A (en) 1990-06-12

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