EP3753075B1 - Procédé de fabrication d'une fiche de contact et fiche de contact - Google Patents

Procédé de fabrication d'une fiche de contact et fiche de contact Download PDF

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Publication number
EP3753075B1
EP3753075B1 EP19703114.9A EP19703114A EP3753075B1 EP 3753075 B1 EP3753075 B1 EP 3753075B1 EP 19703114 A EP19703114 A EP 19703114A EP 3753075 B1 EP3753075 B1 EP 3753075B1
Authority
EP
European Patent Office
Prior art keywords
section
forming
contact plug
process according
blank
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.)
Active
Application number
EP19703114.9A
Other languages
German (de)
English (en)
Other versions
EP3753075A1 (fr
Inventor
Dennis FASSMANN
Maik DAHNKE
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.)
Phoenix Contact GmbH and Co KG
Original Assignee
Phoenix Contact GmbH and Co KG
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Publication date
Application filed by Phoenix Contact GmbH and Co KG filed Critical Phoenix Contact GmbH and Co KG
Publication of EP3753075A1 publication Critical patent/EP3753075A1/fr
Application granted granted Critical
Publication of EP3753075B1 publication Critical patent/EP3753075B1/fr
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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
    • 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
    • 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
    • H01R13/03—Contact members characterised by the material, e.g. plating, or coating materials
    • 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 method for producing a contact plug and a contact plug.
  • Contact plugs are usually manufactured by machining lead-containing copper and brass alloys.
  • the machinability of blanks is improved by adding lead. Due to the proven harmful effects of lead on health, the use of lead is increasingly being restricted by standards.
  • EP 2 937 943 A1 and JP 2012 221774 A each disclose the manufacture of a contact plug having a crimping area and a mating area with laminations by cold forming a blank of pure copper.
  • the invention is based on the technical problem of specifying a method for producing a contact plug and a contact plug which do not have the disadvantages described above, or at least do so to a lesser extent, and in particular enable a lead-free contact plug which has a sufficiently high and in particular provides crack-free deformability.
  • the invention relates to a method for producing a contact plug, with the method steps: providing a blank which consists of a lead-free brass alloy; warm forming a first portion of the blank into a crimping area, the crimping area having an opening for insertion of a conductor end and wherein the first portion of the blank is heated to a warm forming temperature before and/or during the warm forming; Cold forming a second portion of the blank into a tab portion, the tab portion having a plurality of fins.
  • the specified temperature control provides the crimping area with a structure that exhibits low strain hardening and thus has high ductility for a crimping process. A conductor end can thus be reliably crimped to the crimp area without cracks forming in the area of the crimp connection.
  • the cold forming of the plug-in area leads to strain hardening, so that the plug-in area is not plastically deformed or only to a small extent when a plug-in connection is made, and is significantly elastically deformed in order to provide corresponding spring forces reversibly.
  • the list of method steps above does not specify a mandatory order of the method steps.
  • the method steps can be carried out in the order in which they are listed, or in a different order.
  • it can be provided that, in deviation from the order in which they are listed, cold forming of the second section takes place before warm forming of the first section.
  • the semi-hot forming temperature is in a range from 250° C. up to and including 450° C.
  • the semi-hot forming temperature can be 350°C.
  • cold forming When cold forming is mentioned here, it is a forming at a temperature below the semi-hot forming temperature.
  • the cold forming can take place at a temperature of less than 100°C, in particular at a temperature of less than 50°C, further in particular at room temperature in a range from 15°C to 30°C.
  • the stated temperatures number the material temperature of the component to be formed.
  • the ambient temperature can deviate from this and be 25°C, for example.
  • the second section is cooled before and/or during the cold forming of the second section. In this way it can be avoided that, for example, a temperature input from a previous semi-hot forming leads to the second section being heated above an intended cold forming temperature.
  • the first section is cooled before and/or during the cold forming of the second section.
  • the first section can be heated from a previous semi-hot forming, with the cooling avoiding or reducing a flow of heat to the second section.
  • the second section is cooled before and/or during and/or after the heating of the first section.
  • the temperature of the second section before and/or during and/or after the forming of the first and second section is always below 100° C., in particular below 50° C., in particular at room temperature in one range of 15°C to 30°C.
  • the term “at any time” refers to the length of time of the manufacturing process in question.
  • the cooling of the first and/or second section can ensure that the desired strain hardening occurs in the second section despite the heating of the first section.
  • a further embodiment of the method is characterized in that a partial area of the crimping area formed by semi-hot forming is cold-formed after semi-hot forming.
  • a partial area of the crimping area formed by semi-hot forming is cold-formed after semi-hot forming.
  • an end section of the crimping area can be formed into a circumferential collar which, as a result of strain hardening, locally has greater strength than the part of the crimping area adjoining it.
  • the lamellae can be axially projecting spring bars.
  • the slats can be arranged at equidistant angular intervals around a central opening.
  • axial slots can be formed between the lamellae.
  • a reliable plug connection can be provided with the aid of the lamellae.
  • cooling takes place by means of a cooling device which is held on a pressing tool or is integrated in a pressing tool.
  • heating takes place by means of a heating device held on a pressing tool or integrated into a pressing tool, such as an induction heating device, a resistance heating device or the like. Cooling and/or heating devices can be integrated compactly into a pressing tool and can be switched on as required.
  • a heating and cooling device can be integrated in tools of the multi-stage press.
  • the invention relates to a contact plug, which consists of a lead-free brass alloy, with a crimping area formed by semi-hot forming of a first section of a blank, wherein the crimping area has an opening for inserting a conductor end, and with a plugging area, the plugging area having a plurality of lamellas, wherein the crimping area has, at least in sections, less strain hardening than the plugging area.
  • good crimpability of the crimping area and sufficient strength and rigidity of the laminations can be achieved. It goes without saying that this is a comparison of the strain hardening of the crimping area compared to that of the plugging area before an actual crimping of a conductor end in the crimping area.
  • the contact plug consists of a lead-free brass alloy CuZn36, CuZn30, CuZn20, CuZn15 or CuZn5.
  • a contact plug 2 produced with the method according to the invention is in 6 shown.
  • a blank 4 is first provided, which consists of a lead-free brass alloy.
  • a first section 6 of the blank 4 is formed into a crimping region 6 by warm forming.
  • An opening 10 for inserting a conductor end is formed on the crimping area 6 with the aid of a tool 8 .
  • the first section 6 is heated to a warm forming temperature of 350° with the aid of an induction heating device 12 before and during the warm forming.
  • a second section 14 of the blank 4 is actively cooled with the aid of a cooling device 16 during semi-automatic semi-hot forming of the first section 6 .
  • the cooling device 16 has cooling channels 18 which carry a cooling fluid.
  • the heating device 12 and the cooling devices 16, 22 are an integral part of tools that enclose the blank 4 during the forming.
  • FIG. 4 14 shows a further cold forming of the second section 14 to form a plug-in area 14, lamellae 26 being formed on the second section 14 with a tool 24.
  • FIG. 4 14 shows a further cold forming of the second section 14 to form a plug-in area 14, lamellae 26 being formed on the second section 14 with a tool 24.
  • the lamellae 26 are axially projecting spring bars which are arranged at equidistant angular intervals around a central opening.
  • axial slots 38 are formed between the lamellae 26 .
  • a partial area 28 of the crimping area 6 formed by semi-hot forming is cold-formed.
  • the area 28 forms a circular collar 28.
  • a first longitudinal section 30 of the contact plug 2 is provided with a work-hardened area (cf. 6 ) to which is attached a length portion 32 with less work hardening, forming a ductile crimp region.
  • the strength of the contact plug 2 essentially corresponds to that of the originally provided blank 4.
  • the strain hardening is highest, since the highest degrees of forming have been effected here.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Forging (AREA)
  • Manufacture Of Switches (AREA)

Claims (10)

  1. Procédé de fabrication d'une fiche de contact, comprenant les étapes de procédé suivantes :
    - la fourniture d'une ébauche (4), qui est constituée d'un alliage de laiton sans plomb ;
    - le formage à mi-chaud d'une première section (6) de l'ébauche (4) en une zone de sertissage (6), la zone de sertissage (6) ayant une ouverture (10) pour l'insertion d'une extrémité de conducteur, et la première section (6) de l'ébauche (4) étant chauffée avant et/ou pendant le formage à mi-chaud à une température de formage à mi-chaud ;
    - le formage à froid d'une deuxième section (14) de l'ébauche (4) en une zone d'enfichage (74), la zone d'enfichage (14) ayant une pluralité de lamelles (26).
  2. Procédé selon la revendication 1, caractérisé en ce que la température de formage à mi-chaud se situe dans une plage allant de 250 °C inclus à 450 °C inclus.
  3. Procédé selon la revendication 1 ou la revendication 2, caractérisé en ce que
    - la deuxième section (14) est refroidie avant et/ou pendant le formage à froid de la deuxième section (14) ; et/ou
    - la première section (6) est refroidie avant et/ou pendant le formage à froid de la deuxième section (14).
  4. Procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce que
    - la deuxième section (74) est refroidie avant et/ou pendant et/ou après le chauffage de la première section (6) et/ou
    - la température de la deuxième section (14) avant et/ou pendant et/ou après le formage de la première et de la deuxième section (6, 14) est à tout moment inférieure à 100 °C.
  5. Procédé selon l'une quelconque des revendications 1 à 4, caractérisé en ce que
    - une zone partielle (28) de la zone de sertissage (6) formée par formage à mi-chaud est formée à froid après le formage à mi-chaud.
  6. Procédé selon l'une quelconque des revendications 1 à 5, caractérisé en ce que
    - les lamelles (26) sont des nervures élastiques (26) faisant saillie axialement
    et/ou
    - les lamelles (26) sont agencées à des distances angulaires équidistantes autour d'une ouverture centrale et/ou
    - des fentes axiales (38) sont formées entre les lamelles (26).
  7. Procédé selon l'une quelconque des revendications 1 à 6, caractérisé en ce que
    - un refroidissement est effectué au moyen d'un appareil de refroidissement (16, 20) maintenu sur un outil de presse ou intégré dans un outil de presse et/ou
    - un chauffage est effectué au moyen d'un appareil de chauffage (12) maintenu sur un outil de presse ou intégré dans un outil de presse, tel qu'un appareil de chauffage par induction (12), un appareil de chauffage par résistance ou analogue.
  8. Procédé selon l'une quelconque des revendications 1 à 7, caractérisé en ce que
    - le formage est effectué à l'aide d'une presse à plusieurs étages,
    - la presse à plusieurs étages présentant au moins un appareil de chauffage (12) et au moins un appareil de refroidissement (16, 20).
  9. Fiche de contact,
    - qui est constituée d'un alliage de laiton sans plomb,
    - comprenant une zone de sertissage (6) formée par formage à mi-chaud d'une première section (6) d'une ébauche (4), la zone de sertissage (6) ayant une ouverture (10) pour l'insertion d'une extrémité de conducteur, et
    - comprenant une zone d'enfichage (14), la zone d'enfichage (14) ayant une pluralité de lamelles (26),
    - la zone de sertissage (6) présentant, au moins par sections, un écrouissage inférieur à celui de la zone d'enfichage (14).
  10. Fiche de contact selon la revendication 9,
    - la fiche de contact (2) ayant été fabriquée par un procédé selon l'une quelconque des revendications 1 à 8 et/ou
    - la fiche de contact (2) étant constituée d'un alliage de laiton sans plomb CuZn36, CuZn30, CuZn20, CuZnl5 ou CuZn5.
EP19703114.9A 2018-02-14 2019-02-11 Procédé de fabrication d'une fiche de contact et fiche de contact Active EP3753075B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE20185090A BE1026016B1 (de) 2018-02-14 2018-02-14 Verfahren zum Herstellen eines Kontaktsteckers und Kontaktstecker
PCT/EP2019/053287 WO2019158473A1 (fr) 2018-02-14 2019-02-11 Procédé de fabrication d'une fiche de contact et fiche de contact

Publications (2)

Publication Number Publication Date
EP3753075A1 EP3753075A1 (fr) 2020-12-23
EP3753075B1 true EP3753075B1 (fr) 2022-08-24

Family

ID=61568990

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19703114.9A Active EP3753075B1 (fr) 2018-02-14 2019-02-11 Procédé de fabrication d'une fiche de contact et fiche de contact

Country Status (7)

Country Link
US (1) US11848510B2 (fr)
EP (1) EP3753075B1 (fr)
CN (1) CN111727532B (fr)
BE (1) BE1026016B1 (fr)
ES (1) ES2929195T3 (fr)
PL (1) PL3753075T3 (fr)
WO (1) WO2019158473A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU101955B1 (de) * 2020-07-24 2022-01-24 Phoenix Contact Gmbh & Co Verfahren zum Herstellen eines wenigstens abschnittsweise aus einer Messinglegierung gebildeten Kontaktelements sowie ein Kontaktelement

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2563760A (en) * 1945-08-18 1951-08-07 Bendix Aviat Corp Electrical socket connector having fingers of tapered thickness
DE2847296C3 (de) * 1978-10-31 1981-10-08 MTU Motoren- und Turbinen-Union München GmbH, 8000 München Verfahren zur Herstellung eines gekapselten Meßkopfes an Mantelthermoelementen
CA1215097A (fr) * 1982-05-26 1986-12-09 Kurth P. Bousman Balai de generatrice homopolaire
US6492060B1 (en) * 2000-01-18 2002-12-10 Concorde Battery Corporation Low resistance high conductivity battery terminal
FR2852870B1 (fr) * 2003-03-24 2005-06-10 Bollhoff Otalu Sa Procede de fabrication d'un ecrou noye a sertir et ecrou noye a sertir realise par un tel procede.
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JP4971075B2 (ja) * 2007-08-24 2012-07-11 株式会社オートネットワーク技術研究所 ソケット端子
JP5556998B2 (ja) * 2010-02-19 2014-07-23 住友電装株式会社 雌端子
TWM394399U (en) * 2010-07-20 2010-12-11 Ks Terminals Inc Water-proof connector and female terminal therein
JP2012221774A (ja) * 2011-04-11 2012-11-12 Furukawa Denko Sangyo Densen Kk メス接子およびメス接子の製造方法
CN103022769A (zh) * 2011-09-23 2013-04-03 苏州智绿环保科技有限公司 一种高性能的铜合金连接器插孔
DE102013100493B3 (de) * 2013-01-18 2013-12-24 Harting Electric Gmbh & Co. Kg Buchsenkontakt
WO2014129219A1 (fr) * 2013-02-23 2014-08-28 古河電気工業株式会社 Borne, structure de connexion de fil, et procédé pour fabriquer une borne
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DE102015200491A1 (de) * 2015-01-14 2016-07-14 Robert Bosch Gmbh Einpresskontakt mit einer einrollbar ausgebildeten Einpresszone
CN106898900A (zh) * 2015-12-20 2017-06-27 西安蓝钻电子科技有限公司 一种圆柱形面接触连接组件
KR101692671B1 (ko) * 2016-04-18 2017-01-04 강민정 가스 배출홀을 구비한 압착단자 및 그의 제조방법

Also Published As

Publication number Publication date
PL3753075T3 (pl) 2022-12-12
US20210050685A1 (en) 2021-02-18
BE1026016B1 (de) 2019-09-16
EP3753075A1 (fr) 2020-12-23
CN111727532B (zh) 2022-06-07
WO2019158473A1 (fr) 2019-08-22
US11848510B2 (en) 2023-12-19
ES2929195T3 (es) 2022-11-25
CN111727532A (zh) 2020-09-29
BE1026016A1 (de) 2019-09-09

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