EP0859071B1 - Procédé de revêtement sélectif galvanique d'éléments de contact électrique - Google Patents

Procédé de revêtement sélectif galvanique d'éléments de contact électrique Download PDF

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Publication number
EP0859071B1
EP0859071B1 EP98101116A EP98101116A EP0859071B1 EP 0859071 B1 EP0859071 B1 EP 0859071B1 EP 98101116 A EP98101116 A EP 98101116A EP 98101116 A EP98101116 A EP 98101116A EP 0859071 B1 EP0859071 B1 EP 0859071B1
Authority
EP
European Patent Office
Prior art keywords
tip
electrolyte
galvanizing
contact
accordance
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
EP98101116A
Other languages
German (de)
English (en)
Other versions
EP0859071A3 (fr
EP0859071A2 (fr
Inventor
Klaus-Günter Rösener
Kai Erik Liebisch
Hans-Joachim Dr.Rer.Nat. Neese
Uwe Liebig
Johannes Gündel
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.)
Schempp und Decker Praezisionsteile und Oberflaechentechnik GmbH
Original Assignee
Schempp und Decker Praezisionsteile und Oberflaechentechnik GmbH
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 DE1997104369 external-priority patent/DE19704369C2/de
Application filed by Schempp und Decker Praezisionsteile und Oberflaechentechnik GmbH filed Critical Schempp und Decker Praezisionsteile und Oberflaechentechnik GmbH
Publication of EP0859071A2 publication Critical patent/EP0859071A2/fr
Publication of EP0859071A3 publication Critical patent/EP0859071A3/fr
Application granted granted Critical
Publication of EP0859071B1 publication Critical patent/EP0859071B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/02—Electroplating of selected surface areas

Definitions

  • the invention relates to a method for the selective electroplating of electrical contact elements with which on at least one contact surface metallic base body of the contact elements, an electrolyte is applied to the contains more conductive material than the basic body (report volume on the 2nd EAST Congress, November 1991, Eugen G. Leuze Verlag, Saulgau, 1992, pages 30 to 37).
  • Such a method is used, for example, to coat the contact tips of electrical contact elements used.
  • bodies made of other metals such as bronze, nickel silver, copper beryllium or stainless steel.
  • Suitable metals are preferred Gold and palladium, but also platinum, ruthenium, rhodium, silver, nickel or copper. there In principle, it is always sufficient if only the direct contact area of one Contact element is coated with the more conductive material. Because this given problems for economic reasons with the coating material "gold" on are the most serious, will be - in the following - representative of all other possible materials - explains the galvanic coating of contact springs made of bronze with gold.
  • the invention is based on the object of the method described at the outset shape that the consumption of gold can be reduced.
  • the gold-containing electrolyte applies directly and only to that coating contact surface of the contact springs. This happens through the feed automatically from above with sufficient pressure.
  • the one for a usable one The required thickness of the contact surface is achieved by the elongated plating tip, through which the contact springs all the way along them with electrolyte be charged.
  • the supply of the electrolyte from above also leads to one simple structure of the whole arrangement and a simple way of working. Of It is particularly important that no covering elements or components are required become.
  • the electrolyte running down comes with the outer surface of the Contact springs hardly touch. There is also none in the interior of the contact springs essential gold plating instead.
  • the coating remains i. w. towards the coating contact point limited. Gold consumption is therefore almost to a minimum required measure limited.
  • a gold electrolyte is located in an electrolyte chamber 1 serving for distribution.
  • a plastic plating tip 3 located below the same, which is connected to the electrolyte chamber 1 is connected via passages, is a plastic plating tip 3 arranged, the more precise structure of which is apparent from FIGS. 3, 4 and 5. It is used for targeted supply of the electrolyte to a contact spring 4, which consists of gold Contact surfaces should be coated.
  • the contact spring 4 is the same with a large number Continuous contact springs attached to a carrier strip 5.
  • electrolyte chamber 1 is located above the plating tip 3 and the Contact spring 4 is arranged at the lower end thereof. The electrolyte becomes the Contact spring 4 thus supplied from above through the electroplating tip 3.
  • the contact spring 4 to be coated in the illustrated embodiment has two arms trained with the two spring halves or arms 6 and 7.
  • the curved Arms 6 and 7 have contact tips 8 and 9, which are to be coated with gold. The remaining surface of the contact spring 4 should not be coated.
  • the electroplating tip 3 is made of plastic films, for example Mylar consist. However, other chemically resistant plastics can also be used. 3, the electroplating tip 3 is composed of three foils 10, 11 and 12 lying one against the other built up. The middle film 11 is longer than the two side films 10 and 12. Im protruding area are outlet openings 13 for the electrolyte, which over the entire length or width of the plating tip 3 are present. In use position are the outlet openings 13 below.
  • the three foils 10, 11 and 12 close from Fig. 4 visible channel-like passages 14, at the lower ends of which Outlet openings 13 are located. They serve to supply the electrolyte to the Outlet openings 13.
  • a plating tip 3 consisting of three foils 10, 11 and 12 becomes, for example, like this made that 11 parts are first punched out of the film. The result Any gaps that arise result in the later passages 14. On both longitudinal edges of the film 11 continuous strips are left, so that the film 11 like a kind Double comb looks. Then the two films 10 perforated analogously to the film 11 and 12 laminated onto the perforated film 11 on different sides. Your punched out passages are congruent over the passages 14 of the film 11 4, however, partially cover the passages 14 of the film 11 in the lower region so that the outlet openings 13 remain free. The film 11 protrudes according to FIGS. 3 and 4 beyond slides 10 and 12. When using this plating tip 3, both Contact tips 8 and 9 wetted in the same way by the electrolyte. On both Contact tips 8 and 9 are thus deposited with a layer of approximately the same thickness.
  • the length of the plating tip 3 depends on the thickness of the layers to be deposited. It can be a few centimeters long, but also about 1.5 m long. An average value for the length of the plating tip 3 is 800 mm.
  • the contact springs 4 to be coated should - as a function of the layer thickness of the coating to be produced - be moved as quickly as possible. They are, for example, at a speed of more than 3 m / min, usually at 12 m / min, moved along the plating tip 3. However, higher take-off speeds are also possible if two or more or a larger number of plating tips 3 are used.
  • the plating tip 3 consists of five foils 10 and 12 and 15, 16 and 17.
  • the foils 15 and 16 gaps are punched out to form the passages 14.
  • the punched foils 15 and 16 are laminated to the inner film 17, while the outer one, too perforated films 10 and 12 are laminated back to the films 15 and 16.
  • the electroplating tip 3 are passages 14 on both sides of the film 17 and outlet openings 13 are present.
  • the electrolyte becomes the contact tips 8 and 9 fed in separate ways. With such an electroplating tip 3 can two contact tips 8 and 9 layers are deposited with different thickness. Separate electrolyte chambers and different current strengths can be used for this become.
  • the contact springs 4 are arranged during the galvanization so that their contact tips 8 and 9 are at the level of the outlet openings 13. So you will, for example, at their Movement in the direction of arrow 18 shown in FIG. 4 along the electroplating tip 3 constantly wetted by the electrolyte.
  • the contact springs 4 are preferred forced out. They slide with their carrier strip 5 on resiliently visible from FIG. 7 mounted rope pulleys 19 made of plastic and are also made of plastic existing rails 20 and 21 pressed. These are on the side of the electroplating tip 3 and are equipped according to FIG. 4 with elongated holes 22 for the passage of the electrolyte.
  • the contact springs 4 and 4 are above the contact springs 4 and 4 to be coated essentially also arranged above the plating tip 3. As shown in 1 and 6, the electroplating tip 3 protrudes into the electrolyte chamber 1, namely in the connected to the same holder 2.
  • the electroplating current flows between contact tips 8 and 9 between the two anodes 23 and 24 and the cathodically connected contact springs 4.
  • the anodes 23 and 24 have approximately in their central area elongated holes 25 (Fig. 4) for the passage of the electrolyte.
  • the contact springs 4 are operated by the pulleys 19 against the rails 20 and 21 pressed.
  • the electrolyte then becomes the one to be coated Contact tips 8 and 9 supplied in the same way and at the same current.
  • a 5 there is the possibility that To divide electrolyte chamber 1 into two separate chambers. It can then be for the two Chambers different power sources are used, so that the two Contact tips 8 and 9 are coated with different currents. Result it different layers on the two contact tips 8 and 9 can be used to further reduce gold consumption.
  • a thin layer of gold is also deposited on the outside of the contact tips 8 and 9 lying areas of the arms 6 and 7 generated, and also in the interior of the contact springs 4th These are due to the method used with the targeted supply of the electrolyte Layers but very thin. They can be removed by a simple stripping process. The gold can then be recovered using conventional techniques. Not quite avoiding thin coating of the contact springs 4 in places not desired can also be used, for example, only the contact tip 8 directly over the To coat outlet openings 13. Then there are none on the side of the contact tips 9 Outlet openings in a corresponding electroplating tip 3 or there is no electrolyte fed to this page. On the contact tips 9 is also after termination a thin layer of gold.
  • the electrolyte runs from the collecting container 26 into a storage tank 27 Carrying out the method, the electrolyte is pumped into the Pumped electrolyte chamber 1.
  • a Flow meter 30 may be arranged through which the supplied to the electrolyte chamber 1 Amount of electrolyte can be regulated via a valve 31.
  • the device for carrying out the method is shown in a schematic in FIG Reproduced side view.
  • Details are shown here contacting rollers 32 and 33, through which the Contact springs 4 connected to the cathode of a rectifier, not shown are.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Manufacture Of Switches (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Conductive Materials (AREA)

Claims (7)

  1. Procédé de revêtement galvanique sélectif d'éléments de contact électriques qui consiste à appliquer, sur au moins une surface de contact d'un corps de base métallique des éléments de contact, un électrolyte dont le matériau est meilleur conducteur électrique que le corps de base, caractérisé par le fait que
    l'on utilise, pour l'application de l'électrolyte, un bec de galvanisation (3) en plastique de forme allongée, pourvu d'au moins une ouverture de sortie (13) présente sur toute sa longueur et d'une multitude de canaux de passage (14) débouchant dans cette même ouverture pour le transit de l'électrolyte,
    le bec de galvanisation (3) est, dans sa position d'utilisation, disposé de telle sorte que l'ouverture de sortie (13) est située en bas et horizontalement, et que les canaux de passage (14) sont orientés vers le haut en partant de l'ouverture de sortie (13),
    l'alimentation en électrolyte du bec de galvanisation (3) s'effectue par le haut et que
    le corps de base est déplacé au niveau de l'extrémité inférieure du bec de galvanisation (3) et parallèlement à celui-ci de manière à ce que la zone prévue de surface de contact du corps se trouve à la hauteur de l'ouverture de sortie (13) et à distance constante.
  2. Procédé suivant la revendication 1, caractérisé par le fait que pour former deux calottes de contact (8, 9) situées l'une en face de l'autre sur les deux lamelles (6, 7) d'une lame de contact double (4), le bec de galvanisation (3) est disposé dans l'espace situé entre les deux lamelles (6, 7).
  3. Procédé suivant la revendication 2, caractérisé par le fait que des chambres à électrolyte séparées et des intensités de courant différentes sont utilisées pour les deux calottes de contact (8, 9).
  4. Procédé suivant l'une des revendications 1 à 3, caractérisé par le fait que le corps de base est guidé positivement par le bec de galvanisation (3).
  5. Dispositif permettant la mise en oeuvre du procédé suivant l'une des revendications 1 à 4, caractérisé par le fait que le bec de galvanisation (3) est constitué d'au moins trois feuilles de plastique plaquées les unes contre les autres, comprenant des passages (14) sous forme de canaux pour l'électrolyte.
  6. Dispositif suivant la revendication 5, caractérisé par le fait que la chambre à électrolyte (1) contenant l'électrolyte est disposée au-dessus du bec de galvanisation (3).
  7. Dispositif suivant la revendication 6, caractérisé par le fait que le bec de galvanisation (3) pénètre dans la chambre à électrolyte (1) avec sa partie haute en position d'utilisation.
EP98101116A 1997-02-06 1998-01-23 Procédé de revêtement sélectif galvanique d'éléments de contact électrique Expired - Lifetime EP0859071B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1997104369 DE19704369C2 (de) 1997-02-06 1997-02-06 Verfahren zum selektiven galvanischen Beschichten von elektrischen Kontaktelementen
DE19704369 1997-02-06

Publications (3)

Publication Number Publication Date
EP0859071A2 EP0859071A2 (fr) 1998-08-19
EP0859071A3 EP0859071A3 (fr) 1999-10-27
EP0859071B1 true EP0859071B1 (fr) 2002-09-04

Family

ID=7819401

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98101116A Expired - Lifetime EP0859071B1 (fr) 1997-02-06 1998-01-23 Procédé de revêtement sélectif galvanique d'éléments de contact électrique

Country Status (4)

Country Link
US (1) US6149791A (fr)
EP (1) EP0859071B1 (fr)
AT (1) ATE223525T1 (fr)
DE (2) DE19758513C2 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2792465B1 (fr) * 1999-04-13 2001-06-15 Radiall Sa Element de connecteur multicontact avec moyen de connexion a la masse de son boitier
KR100544322B1 (ko) * 2002-11-25 2006-01-23 주식회사 젯텍 스트립 형태 부품의 이송용 벨트
SG121961A1 (en) * 2004-10-19 2006-05-26 Jettech Ltd Feeder belt for strip-shaped parts
FR2915495B1 (fr) * 2007-04-30 2010-09-03 Snecma Procede de reparation d'une aube mobile de turbomachine
US8246808B2 (en) * 2008-08-08 2012-08-21 GM Global Technology Operations LLC Selective electrochemical deposition of conductive coatings on fuel cell bipolar plates

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2504780A1 (de) * 1975-02-05 1976-08-19 Siemens Ag Verfahren und vorrichtung zur spruehgalvanisierung
DE3108358C2 (de) * 1981-03-05 1985-08-29 Siemens AG, 1000 Berlin und 8000 München Vorrichtung zum partiellen Galvanisieren von zu elektrisch leitenden Bändern, Streifen oder dgl. zusammengefaßten Teilen im Durchlaufverfahren
US4405410A (en) * 1982-01-15 1983-09-20 Northern Telecom Limited Masking of elongate three dimensional objects for the exposure of preselected areas for surface treatment
DE3317970A1 (de) * 1983-05-13 1984-11-15 Schering AG, 1000 Berlin und 4709 Bergkamen Vorrichtung und verfahren zur galvanischen abscheidung von metallen
FR2549336B1 (fr) * 1983-06-23 1986-11-21 Telmec Spa Tec Elett Mecc Machine pour la dorure en continu de connecteurs lamellaires de circuits imprimes, avec groupe de transport pouvant effectuer une translation
US4597845A (en) * 1984-09-25 1986-07-01 Robbins & Craig Welding & Mfg. Co. Continuous contact plating apparatus
US4595464A (en) * 1984-09-25 1986-06-17 Robbins & Craig Welding & Mfg. Co. Continuous contact method for electrolytic fluid working of parts
JPS61250191A (ja) * 1985-04-26 1986-11-07 Electroplating Eng Of Japan Co コネクタ端子のブラシメツキ方法
JPS62139895A (ja) * 1985-12-16 1987-06-23 Electroplating Eng Of Japan Co 部分メツキ装置
DE3683595D1 (de) * 1985-11-11 1992-03-05 Electroplating Eng Vorrichtung zum selektiven metallbeschichten von steckverbinderkontaktstiften.

Also Published As

Publication number Publication date
US6149791A (en) 2000-11-21
EP0859071A3 (fr) 1999-10-27
EP0859071A2 (fr) 1998-08-19
DE59805367D1 (de) 2002-10-10
DE19758513C2 (de) 2000-07-13
ATE223525T1 (de) 2002-09-15

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