EP0148328A2 - Interrupteur électrique avec des contacts fixes formés par des parties de pistes conductrices - Google Patents

Interrupteur électrique avec des contacts fixes formés par des parties de pistes conductrices Download PDF

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Publication number
EP0148328A2
EP0148328A2 EP84111611A EP84111611A EP0148328A2 EP 0148328 A2 EP0148328 A2 EP 0148328A2 EP 84111611 A EP84111611 A EP 84111611A EP 84111611 A EP84111611 A EP 84111611A EP 0148328 A2 EP0148328 A2 EP 0148328A2
Authority
EP
European Patent Office
Prior art keywords
contact
fixed contacts
tracks
contacts
conductor tracks
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Withdrawn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
EP84111611A
Other languages
German (de)
English (en)
Other versions
EP0148328A3 (fr
Inventor
Horst Hermann Günther
Hermann Friedrich Oesterle
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.)
Alcatel Lucent Deutschland AG
Alcatel Lucent NV
Original Assignee
Alcatel SEL AG
Standard Elektrik Lorenz AG
Alcatel NV
International Standard Electric Corp
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 Alcatel SEL AG, Standard Elektrik Lorenz AG, Alcatel NV, International Standard Electric Corp filed Critical Alcatel SEL AG
Publication of EP0148328A2 publication Critical patent/EP0148328A2/fr
Publication of EP0148328A3 publication Critical patent/EP0148328A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
    • H01H1/40—Contact mounted so that its contact-making surface is flush with adjoining insulation
    • H01H1/403—Contacts forming part of a printed circuit
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
    • H01H19/005—Electromechanical pulse generators

Definitions

  • the invention relates to an electrical switch, the fixed contacts of which are covered with a metallic layer of parts of conductor tracks on a circuit board and the movable contacts are designed as sliding contacts that can be moved on predetermined contact tracks via the fixed contacts on the circuit board, and in the case of a contact track a plurality of electrically connected fixed contacts are provided.
  • a copper layer that is laminated onto the printed circuit board is usually used as the material for the conductor tracks and from which the conductor tracks are etched, preferably using a photo-etching process.
  • the copper conductor tracks are not suitable as contacts for a switch, since the copper easily oxidizes, which inadmissibly increases the contact resistance between the movable and the fixed contacts.
  • Such fixed contacts formed from conductor tracks are usually covered with a noble metal layer, for example with a gold layer.
  • This gold layer is usually applied by a galvanic process.
  • all conductor tracks on the printed circuit board are covered with a gold layer.
  • the gold plating has a very small thickness, for example a few ⁇ m, the gold layer, which is essential for the fixed contacts, makes up a considerable part of the price of the entire printed circuit board.
  • the covering varnish remains on the printed circuit board after the free pieces of the conductive path have been glazed, since removing them would cause additional work steps and costs and, at the same time, as corrosion protection for them parts of the conductor tracks covered with an EdeLMetal layer.
  • the covering lacquer for the fee may not be applied to the locations of the circuit boards that correspond to the contact paths of the movable contacts.
  • the material of the lacquer layer would get on the movable and fixed contacts due to abrasion when the switch was actuated, thus giving rise to considerable contact faults. It has therefore been accepted that in the area of the contact tracks of the movable contacts, it is not possible to cover the conductor tracks before the charge.
  • the object of the invention is to achieve a further saving in EdeLmetaLL with switches of the type mentioned.
  • the invention is based on the knowledge that there are numerous switches of the specified type in which a plurality of fixed contacts arranged on a contact track are electrically connected to one another.
  • An example of such switches are the so-called coding switches.
  • Such electrically connected fixed contacts lying on a common contact path have so far only been used as one continuous contact, which of course runs the entire length with a layer of precious metal, e.g. B. a gold layer must be provided.
  • the conductor tracks in the switches in question are obtained by etching out a copper layer originally completely covering the circuit board, the connecting lines and supply lines for the fixed contacts on the circuit board can be routed as desired and can also have any shape and length without the material consumption thereby being reduced or the manufacturing effort changes.
  • the etching baths are consumed less quickly, even with longer conductor tracks, since less copper has to be dissolved. With the invention, it is therefore possible to achieve a considerable saving in basic metal in the switches of the type mentioned without additional expenditure on process steps or material.
  • the connecting lines for the contacts arranged on a contact path could be located directly on the edge of the con tact course run.
  • the lacquer cover is arranged at a short distance from the contact track. However, this means that the noble metal coating extends somewhat beyond the contact path. If the connecting lines now ran directly after the contact track, they would still cover a narrow edge with EdeLmetaLL.
  • the connecting lines are therefore arranged at a distance from the contact tracks and connected to the contacts via connecting webs. Then only narrow strips of the connecting webs are covered with the EdeLmetaLL layer after the contacts.
  • the conductor tracks used to connect the fixed contacts of a contact track run approximately parallel to the contact track and the connecting webs run approximately perpendicular to the contact track.
  • a further saving on EdeLmetaLL can be achieved by routing the supply lines to the fixed contacts so that the supply lines are arranged as perpendicular as possible to the contact path when the contact paths cross inevitably. Since, as mentioned at the beginning, there is an application of covering lacquer on the contact track is not possible, it is inevitable that the conductor tracks forming the supply lines are also gold-plated at the intersection points with the contact tracks. A right-angled crossing results in the smallest area to be gilded.
  • a circuit pattern has been produced by etching on the circuit board 1 made of insulating material.
  • the conductor tracks are shown partly black and partly hatched.
  • the conductor tracks 3 drawn in black form the fixed contacts and the parts of the conductor tracks which are provided with an EdeLmetaLL harsh.
  • the hatched conductor tracks 4 form the supply lines for the fixed contacts 3 and were covered during VergoLden.
  • the ring-shaped connection contacts 5 are provided with a gold layer and serve to attach electrical supply lines for the switch.
  • the contact tracks for the movable contacts are represented by the five circular tracks 2 which are concentric with one another.
  • the parts of the contact tracks that are not filled in black are not per se visible on the circuit board. However, they are usually recognizable on the printed circuit board, since the ring-shaped zones between the contact tracks are printed with the covering varnish for the coating.
  • the circuit board 1 is also printed with the covering varnish outside the contact track 2, with the exception of the connection contacts 5. Therefore, all conductor tracks present on the contact tracks are provided with a gold layer, that is to say not only the contact rings 5 but also the parts of the supply lines 4, which are one Cross the contact path. This is the case at the locations designated 6, 7, 8 and 9, where the supply lines 4 are inevitably covered with a gold layer.
  • FIG. 2 shows the same printed circuit board for a coding switch as FIG. 1, but here the printed conductors are arranged according to the invention, which leads to a considerable saving in GoLd.
  • the individual contacts are present on each contact track in the embodiment according to FIG. 2, while the electrical connection of the individual interconnected contacts runs between the contact tracks.
  • the connecting lines designated 10, 11, 12, 13 and 14 are arranged between the individual contacts. Since these can be covered between the contact tracks and outside of the contact tracks with a lacquer before the gold coating, there is a substantial saving in gold, since the areas to be gold-plated are considerably smaller, which is readily shown by a comparison with the black area parts in FIG. 1 .
  • the connecting lines 10, 11, 12, 13 and 14 are arranged approximately parallel to and at a distance from the contact tracks 2 and are connected to the fixed contacts 3 by connecting webs 15 running approximately perpendicular to the contact tracks 2.

Landscapes

  • Contacts (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Manufacture Of Switches (AREA)
EP84111611A 1983-10-05 1984-09-28 Interrupteur électrique avec des contacts fixes formés par des parties de pistes conductrices Withdrawn EP0148328A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3336130 1983-10-05
DE19833336130 DE3336130A1 (de) 1983-10-05 1983-10-05 Elektrischer schalter

Publications (2)

Publication Number Publication Date
EP0148328A2 true EP0148328A2 (fr) 1985-07-17
EP0148328A3 EP0148328A3 (fr) 1988-03-23

Family

ID=6210999

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84111611A Withdrawn EP0148328A3 (fr) 1983-10-05 1984-09-28 Interrupteur électrique avec des contacts fixes formés par des parties de pistes conductrices

Country Status (4)

Country Link
US (1) US4578547A (fr)
EP (1) EP0148328A3 (fr)
JP (1) JPS6097518A (fr)
DE (1) DE3336130A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5315077A (en) * 1993-04-05 1994-05-24 Bourns, Inc. Rotary switch including cam operated flexible contacts
DE19919395A1 (de) * 1998-04-29 1999-11-04 Capax B V Schalter für elektrische Werkzeuge mit integrierten Schaltkontakten
US6288653B1 (en) * 1998-12-22 2001-09-11 Yun Ning Shih Curved surface signal pick-up device
DE69906673T2 (de) * 1998-12-24 2004-01-22 Teikoku Tsushin Kogyo Co. Ltd., Kawasaki Verfahren zum Formen eines Formharzes auf einem Substrat mit Öffnungen und Schaltersubstrat mit einem Formharz
DE102009012145B4 (de) * 2009-03-06 2014-02-20 Abb Technology Ag Verfahren zur Herstellung von Bauteilen, sowie Bauteile selbst
JP4622879B2 (ja) * 2006-02-17 2011-02-02 パナソニック株式会社 回転操作形エンコーダ
USD545769S1 (en) * 2006-02-17 2007-07-03 Stora Enso Ab Switch
CN102306582A (zh) * 2011-07-11 2012-01-04 浙江正泰机床电气制造有限公司 一种旋转型万能开关

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2896033A (en) * 1955-01-27 1959-07-21 Daystrom Inc Printed circuit assembly
JPS5242003B2 (fr) * 1971-12-06 1977-10-21
DE7310839U (de) * 1973-03-22 1976-08-12 Reck, Dieter, 7250 Leonberg Codierschalter
US3794784A (en) * 1973-05-07 1974-02-26 Atlantic Richfield Co Rotary wafer switch having rotor mounted, spiral arranged axial bridging contacts
DE2441469C3 (de) * 1974-08-29 1980-12-04 Hartmann & Braun Ag, 6000 Frankfurt Elektrischer Drehschalter in geschlossener Bauweise
JPS5147271A (en) * 1974-10-18 1976-04-22 Matsushita Electric Industrial Co Ltd Insatsusuitsuchipurintokiban
US4038504A (en) * 1975-11-19 1977-07-26 A.C. Nielsen Company Rotary, printed circuit wafer switch and method for adjusting
FR2336782A1 (fr) * 1975-12-22 1977-07-22 Radiotechnique Compelec Commutateurs rotatifs codeurs
US4246453A (en) * 1979-07-12 1981-01-20 Electro Audio Dynamics, Inc. Switch
DE3040546C2 (de) * 1980-10-28 1983-04-07 Siemens AG, 1000 Berlin und 8000 München Codierschalter

Also Published As

Publication number Publication date
US4578547A (en) 1986-03-25
DE3336130A1 (de) 1985-04-18
EP0148328A3 (fr) 1988-03-23
JPS6097518A (ja) 1985-05-31

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Effective date: 19880926

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Inventor name: OESTERLE, HERMANN FRIEDRICH

Inventor name: GUENTHER, HORST HERMANN