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 PDFInfo
- 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
Links
- 238000004519 manufacturing process Methods 0.000 title description 10
- 238000002788 crimping Methods 0.000 claims description 27
- 238000000034 method Methods 0.000 claims description 25
- 238000001816 cooling Methods 0.000 claims description 20
- 238000010438 heat treatment Methods 0.000 claims description 18
- 229910001369 Brass Inorganic materials 0.000 claims description 13
- 229910045601 alloy Inorganic materials 0.000 claims description 13
- 239000000956 alloy Substances 0.000 claims description 13
- 239000010951 brass Substances 0.000 claims description 13
- 238000005482 strain hardening Methods 0.000 claims description 10
- 238000003825 pressing Methods 0.000 claims description 9
- 239000004020 conductor Substances 0.000 claims description 7
- 230000006698 induction Effects 0.000 claims description 4
- 229910000793 CuZn15 Inorganic materials 0.000 claims description 2
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 238000003754 machining Methods 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000013011 mating Effects 0.000 description 3
- 239000012809 cooling fluid Substances 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 241000446313 Lamella Species 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
Images
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)
- 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).
- 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.
- 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).
- 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.
- 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.
- 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). - 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.
- 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).
- 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).
- 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.
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)
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)
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. |
WO2009021491A2 (fr) * | 2007-08-13 | 2009-02-19 | Global Genius (Hong Kong) Limited | Fiche de raccordement formée par un procédé de compression à l'état fondu |
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 |
EP2830158B1 (fr) * | 2013-02-23 | 2017-12-27 | Furukawa Electric Co., Ltd. | Borne, structure de connexion de fil, et procédé pour fabriquer une borne |
JP6238359B2 (ja) * | 2014-04-23 | 2017-11-29 | 日本航空電子工業株式会社 | ソケットコンタクト |
JP6326320B2 (ja) * | 2014-08-04 | 2018-05-16 | 株式会社フジクラ | 圧着端子の製造方法 |
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 |
-
2018
- 2018-02-14 BE BE20185090A patent/BE1026016B1/de active IP Right Grant
-
2019
- 2019-02-11 US US16/966,913 patent/US11848510B2/en active Active
- 2019-02-11 EP EP19703114.9A patent/EP3753075B1/fr active Active
- 2019-02-11 PL PL19703114.9T patent/PL3753075T3/pl unknown
- 2019-02-11 WO PCT/EP2019/053287 patent/WO2019158473A1/fr unknown
- 2019-02-11 ES ES19703114T patent/ES2929195T3/es active Active
- 2019-02-11 CN CN201980013403.0A patent/CN111727532B/zh active Active
Also Published As
Publication number | Publication date |
---|---|
EP3753075A1 (fr) | 2020-12-23 |
US11848510B2 (en) | 2023-12-19 |
BE1026016B1 (de) | 2019-09-16 |
ES2929195T3 (es) | 2022-11-25 |
BE1026016A1 (de) | 2019-09-09 |
US20210050685A1 (en) | 2021-02-18 |
PL3753075T3 (pl) | 2022-12-12 |
CN111727532B (zh) | 2022-06-07 |
WO2019158473A1 (fr) | 2019-08-22 |
CN111727532A (zh) | 2020-09-29 |
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