EP0134422A2 - Méthode pour la fabrication d'un dispositif de commutation pour un commutateur à touche - Google Patents

Méthode pour la fabrication d'un dispositif de commutation pour un commutateur à touche Download PDF

Info

Publication number
EP0134422A2
EP0134422A2 EP84106455A EP84106455A EP0134422A2 EP 0134422 A2 EP0134422 A2 EP 0134422A2 EP 84106455 A EP84106455 A EP 84106455A EP 84106455 A EP84106455 A EP 84106455A EP 0134422 A2 EP0134422 A2 EP 0134422A2
Authority
EP
European Patent Office
Prior art keywords
fixed contact
contact arm
switching device
electrically conductive
insulating
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.)
Granted
Application number
EP84106455A
Other languages
German (de)
English (en)
Other versions
EP0134422B1 (fr
EP0134422A3 (en
Inventor
Wolf Dipl.-Ing. Neumann-Henneberg
Kuno Dipl.-Ing. Futterknecht
Gerhard Dipl.-Ing. Stengel
Emil Haag
Bernd Schutzbach
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.)
Marquardt GmbH
Original Assignee
Marquardt 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
Application filed by Marquardt GmbH filed Critical Marquardt GmbH
Publication of EP0134422A2 publication Critical patent/EP0134422A2/fr
Publication of EP0134422A3 publication Critical patent/EP0134422A3/de
Application granted granted Critical
Publication of EP0134422B1 publication Critical patent/EP0134422B1/fr
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H11/0056—Apparatus or processes specially adapted for the manufacture of electric switches comprising a successive blank-stamping, insert-moulding and severing operation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49105—Switch making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49908—Joining by deforming
    • Y10T29/49938—Radially expanding part in cavity, aperture, or hollow body
    • Y10T29/49943—Riveting
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24273—Structurally defined web or sheet [e.g., overall dimension, etc.] including aperture
    • Y10T428/24322—Composite web or sheet

Definitions

  • the invention relates to a switching device, consisting essentially of an insulating part and at least one fixed contact part and contact arm part held thereon, the fixed contact part and the contact arm part having fastening openings for connection to the insulating part.
  • Switching devices of this type are installed in electrical switches, preferably in electrical pushbuttons, such as are used, for example, in office machines, but above all in computers and the like. It is therefore a pronounced mass article, in which the manufacturing costs are a very decisive one Criteria for sales success are.
  • the switching device is designed according to the preamble of claim 1 in accordance with the characterizing part of this claim.
  • the particularly inexpensive manufacture of this switching device is therefore achieved by dispensing with loose rivets and the associated costly riveting process. Instead, the rivets are molded out of the material of the insulating part, this molding out and the riveting taking place virtually simultaneously.
  • this requires the use of a plastically deformable material for the insulating part and the use of a corresponding tool.
  • the attachment Breakthroughs of the contact arm part and the fixed contact part must be offset laterally relative to one another, based on the finished switching device, because they are each "riveted" with one or more separate features or the like.
  • a rotationally secure holding is already guaranteed if you hold both the contact arm part and the fixed contact part with two versions each.
  • the mutual assignment is based on the characteristics and thus also the fastening openings depending on the available space and the respective shape of the electrically conductive parts.
  • the fastening openings are expediently closed openings in the manner of bores, but at least one of them could be a fastening opening with open edges. Accordingly, in the case of closed fastening bores, the forms are peg-shaped forms or protuberances, while in the case of fastening openings which are open at the edge, there can also be squeezed or permanently bent wart-like or flap-like parts of the insulating part.
  • the exact shape of the shape or the like is therefore primarily based on the shape of the fastening opening. It also depends on the fluidity of the material and the tool that changes the plastic shape.
  • the material is not only pressed into the fastening opening, rather the aim is that the material of the insulating part on the opposite side of the Attachment breakthrough survives a little. This already creates a good connection between the insulating part and the electrically conductive part.
  • the contact arm part be on this side and the fixed contact part on the other side of the insulating part, an opening in the insulating part being assigned to a fixed contact of the fixed contact part and a movable contact of the contact arm part.
  • the electrical separation of the two electrically conductive parts is ensured by the insulating part located between them.
  • the contact arm with the attached, in particular molded-on, movable contact is pivoted resiliently through the opening in the insulating part until the movable contact strikes the fixed contact of the fixed contact part.
  • This action of force can be achieved, for example, by means of a button on a button, in the housing of which this switching device is installed. As soon as the button has been returned to its original position, the contact arm of the contact arm returns partly with the movable contact back to the starting position and thereby opens the previously closed circuit.
  • the movable contact is formed by the longitudinally slotted or feathered end of the tongue-shaped contact arm, the contact arm part designed as a stamped part.
  • the contact arm part is thus punched out of a band-shaped material, the contact arm being molded at the same time, i.e. the latter is made in one piece with the contact arm part.
  • Special contact rivets are not necessary in such switching devices and are therefore also not customary; rather, part of the contact arm, in particular its free end, forms the movable contact.
  • Another variant of the invention is characterized in that the fixed contact part is a stamped part and the fixed contact is formed by a partial surface, in particular a laterally projecting tab of the fixed contact part. Accordingly, the fixed contact part is also punched out of a flat sheet metal, in particular a sheet metal strip, and the shape or shape of the fastening openings can also be punched out at the same time.
  • the switching device consists of a total of only three parts and this together with the explained manufacturing and connection process steps is the reason for the extremely low production costs.
  • this switching device can be particularly small and compact, especially very flat, so that only a very small space is required in the switch housing in which this switching device is installed. This contributes significantly to the miniaturization of not only the switch but also a keyboard constructed from such switches.
  • a particularly preferred embodiment of the invention consists in that an electrical connection element for the switching device is molded onto both the fixed contact part and the contact arm part.
  • This connecting element expediently has the shape of a tongue for which a corresponding slot is provided in the switch housing.
  • This switching device is fastened in the switch, for example, by rotating about its longitudinal axis in the free ends of the connecting elements which are inserted through it.
  • the invention also relates to a method for producing such a switching device.
  • the object of the invention is to provide a method for the simple, quick and inexpensive manufacture of the switching device.
  • the invention proposes that the method according to the preamble of claim 6, is carried out in accordance with the characterizing part of this claim.
  • the stacking and alignment of the electrically conductive parts that is, the contact arm part on the one hand and the fixed contact part on the other, with respect to the insulating part can be carried out automatically.
  • the same then applies to the subsequent pushing out or pushing through of the forms forming the holding elements through the corresponding fastening openings of the electrically conductive parts.
  • These method steps are expediently carried out in the predetermined cycle. Whether you connect the electrically conductive parts to the insulating part at the same time or at different times depends on various components.
  • Another embodiment of the invention is characterized in that the contact arm part, the fixed contact part and the insulating part are each punched out of a band-shaped material, but are therefore still connected via at least one material bridge.
  • the method is particularly suitable for the automatic step-by-step manufacture of such a switching device with corresponding punching tools in the subsequent step method.
  • the parts are punched out of the band-shaped starting material at a predetermined distance so that they do. have their final shape, but are still connected to at least one continuous strip of the band-shaped material, in particular a side strip, via at least one bridge.
  • the punching can take place in one or more stages. In the latter case, further transport takes place by one step, the size of which corresponds to the distance between adjacent parts on the remaining strip.
  • the latter is used for further transport, both when punching is taking place in stages, as well as in the gradual assignment of two parts, or all parts.
  • the mutual distance between the individual parts on their remaining strips depends on the one hand on minimal material consumption and on the other hand on the spatial conditions and the resulting step size.
  • a particularly preferred variant of the method, in which the electrically conductive parts are connected to the insulating part in succession, is characterized in that the strips with the insulating parts and one of the electrically conductive parts, in particular the contact arm part, are parallel to one another and the strip with the other electrically conductive parts Parts run transversely, preferably perpendicularly, and they can be shifted in cycles.
  • the size of the cycle step depends on the spacing of the parts to be connected to one another and also depends on their size.
  • Another embodiment of the method is characterized in that, after riveting, the insulating part is separated from one of the electrically conductive parts, in particular the contact arm part, or during riveting from its supporting band, ie the remaining strip.
  • a corresponding development of the invention is that the other, to be connected to the insulating part to be electrically conductive part, in particular the fixed contact part, after riveting with the insulating part or during the riveting of its supporting band or residual strips is separated. Because after the riveting of the insulating part and the other electrically conductive part to the one electrically conductive part, all three parts are held together, they can be transported on the remaining strips of the one electrically conductive part, in particular the contact arm part, if necessary.
  • the individual switching devices can also be separated from the remaining strip at the same time as the "riveting" of the last electrically conductive part, in particular the fixed contact part. How to proceed in detail here depends above all on whether these switching devices are possibly fed to further process steps or to an automatic assembly, the latter being particularly suitable due to the manufacturing process.
  • the band-shaped material of the contact arm part is advantageously shifted on a lower level, that of the insulating part on a middle level and that of the fixed contact part on an upper level, although these levels lie only slightly above one another. Due to the flexibility of the material, the parallel belts can also be guided on the same level.
  • the switching device is separated from the supporting band - or its remaining strip - of the one electrically conductive part, in particular the contact part. which can either take place simultaneously with the connection of the other electrically conductive part, in particular the fixed contact part, or in a further method step.
  • the drawing shows schematically both the switching device and the various steps in the manufacturing process of this switching device.
  • the switching devices are expediently produced using three flat bands, band 1 and band 2 being made of electrically conductive material, while band 3 being made of electrically non-conductive material, in particular a thermoplastic material.
  • band 1 and band 2 being made of electrically conductive material
  • band 3 being made of electrically non-conductive material, in particular a thermoplastic material.
  • press board or a similar plastically deformable material can also be used.
  • the belts 2 and 3 run parallel to one another in the same or slightly offset planes approximately offset by material thickness, while the belt 1 runs transversely, preferably perpendicularly to the two belts 2 and 3. In particular, it is provided that the belts 2 and 3 run over the belt 1.
  • the directions of advance of the belts 1, 2 and 3 are symbolized by arrows 4, 5 and 6. The feed movement is gradual, as will be explained in more detail below.
  • the contact arm parts 7, the fixed contact parts 8 from the band 2 and the insulating parts 9 are punched out from the band 1. However, all parts initially remain connected to a remaining strip 10 or 11 or 12, in particular a side strip, of the strip via at least one bridge and are only separated therefrom at the predetermined point in time. It can be seen that the contact arm part 7 has a contact arm 13 with a movable contact 14 and a connecting element 15 extending in the opposite direction. The movable contact is formed by the feathered free end of the contact arm 13. Special con Clock rivets are not provided in the exemplary embodiment. In addition, two fastening openings 16 and 17 have been punched in one or in a second operation. The slightly larger opening 18 is used for transporting the belt 1. Corresponding openings 19 and 20 are provided on the belts 2 and 3.
  • the insulating part 7 has an essentially rectangular opening 35 to which the contact arms 13 and a fixed contact 21 on the fixed contact part 8 are assigned in the finished switching device.
  • This fixed contact is a laterally projecting tab of the fixed contact part 8, which, like the contact arm part 7, has an electrical connection element 22.
  • two fastening openings 23 and 24 are also present on the fixed contact part 8.
  • a contact arm part 7 is assigned to an insulating part 9, the infeed being carried out in the direction of arrow 4 or 6.
  • these two parts are superimposed as shown in FIG. 5.
  • the material of the insulating part 9 is now pressed down at the points of the fastening openings 16 and 17 perpendicular to the image plane.
  • the deformation is plastic, ie the pressed-out material parts of the insulating part 9 remain in the form of bulges 26, 27 or protuberances in the two fastening openings 16 and 17.
  • they protrude downward above these fastening openings so that the projecting free ends can then be pushed in the opposite direction using another tool, which at least approximately creates an approach which is comparable to a rivet head.
  • the insulating part 9 is separated along the dash-dotted line 25 (FIG. 5).
  • this unit consisting of a fixed contact part and an insulating part, is transported further in the direction of arrow 4.
  • a fixed contact part 8 is brought over this unit.
  • material parts are pressed out of the insulating part 9 through the fastening openings 23 and 24.
  • the protruding ends of these expressions 28 and 29 are also flattened out, in particular with simultaneous thorning, which is symbolized by the circles 30 and 31.
  • An immediate detachment from the remaining strip 10, or the holding tab 32 is not provided, rather a further transport takes place, in the sense of arrow 4, with the next feed step of the tape 1.
  • this is a special feature of the exemplary embodiment that is not absolutely necessary. Where and when to carry out the separation depends on the possibilities of the tool design and also the further use of the switching devices.
  • the retaining tab 32 of the band 1 corresponding retaining tab of the bands 2 and 3 are denoted by 33 and 34, respectively. While the retaining tabs 32 and 34 are relatively wide, the retaining tab 33 of the contact part 8 tapers very sharply towards it.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Switches (AREA)
  • Push-Button Switches (AREA)
  • Contacts (AREA)
EP84106455A 1983-07-28 1984-06-06 Méthode pour la fabrication d'un dispositif de commutation pour un commutateur à touche Expired EP0134422B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3327199A DE3327199C2 (de) 1983-07-28 1983-07-28 Verfahren zur Herstellung einer Schaltvorrichtung
DE3327199 1983-07-28

Publications (3)

Publication Number Publication Date
EP0134422A2 true EP0134422A2 (fr) 1985-03-20
EP0134422A3 EP0134422A3 (en) 1985-09-11
EP0134422B1 EP0134422B1 (fr) 1988-01-20

Family

ID=6205122

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84106455A Expired EP0134422B1 (fr) 1983-07-28 1984-06-06 Méthode pour la fabrication d'un dispositif de commutation pour un commutateur à touche

Country Status (5)

Country Link
US (1) US4653179A (fr)
EP (1) EP0134422B1 (fr)
JP (1) JPS60105120A (fr)
DE (1) DE3327199C2 (fr)
IE (1) IE55681B1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1286373A2 (fr) * 2001-08-23 2003-02-26 Alps Electric Co., Ltd. Interrupteur multiple

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2599562B1 (fr) * 1986-05-29 1989-12-08 Matra Communication Support modulaire de microcontact, microcontact en comportant application et procede de fabrication d'un tel microcontact.
DE3633701A1 (de) * 1986-10-03 1988-04-14 Kirsten Elektrotech Elektrischer schalter
DE3717743C2 (de) * 1987-05-26 2001-08-16 Teves Gmbh Alfred Verfahren zur Herstellung elektrischer Geräte und nach diesem Verfahren hergestellte Geräte
US4856189A (en) * 1988-06-16 1989-08-15 Liao Pen Lin Method for manufacturing multiple push-button and conductive members for DIP switches
JPH071665B2 (ja) * 1988-09-20 1995-01-11 富士電機株式会社 熱形過負荷継電器の反転ばね機構
DE4017674C2 (de) * 1990-06-01 2001-09-13 Teves Gmbh Alfred Elektrischer Schalter
BE1026234B1 (de) * 2018-04-24 2019-11-26 Phoenix Contact Gmbh & Co Schaltkontaktanordnung
EP3561830B1 (fr) * 2018-04-24 2021-10-13 Phoenix Contact GmbH & Co. KG Dispositif de contact de commutation

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE619902C (de) * 1935-10-09 Const Electr De Delle Sa Atel Funkenentzieher fuer elektrische Stromunterbrecher
DE1067504B (de) * 1955-11-16 1959-10-22 Paul Dau & Co Appbau Verfahren zur Herstellung einer Nietverbindung zwischen einem metallischen Traeger elektrischer Kontaktstuecke und einem metallischen Geraeteteil
DE1081954B (de) * 1958-08-12 1960-05-19 Siemens Ag Schleifkontaktarm mit Sicherung gegen Kontaktueberbrueckung
DE1154557B (de) * 1962-05-09 1963-09-19 Telefunken Patent Kleinstschalter mit zwei jeweils mit einem Niet auf eine Isolierstoffplatte aufgenieteten Blechfahnen
DE1291833B (de) * 1966-07-19 1969-04-03 Siemens Ag Verfahren zur Herstellung einer Kontaktanordnung, insbesondere fuer Relais
GB1353090A (en) * 1971-11-19 1974-05-15 Plessey Co Ltd Manufacture of contact springset assemblies
DE2252263B2 (de) * 1972-10-25 1974-10-03 Brown, Boveri & Cie Ag, 6800 Mannheim Elektrischer Schalter, der durch einen von einem Steuerglied betätigten Steuernocken schaltbar ist
DE2306597B2 (de) * 1973-02-10 1975-06-26 Loewe Opta Gmbh, 1000 Berlin Druck tastenschalter
EP0030473A1 (fr) * 1979-12-10 1981-06-17 Fujitsu Limited Procédé pour la fabrication simultanée d'une pluralité de commutateurs à bouton-poussoir

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US272033A (en) * 1883-02-13 Inlaid work and process of producing the same
DE609902C (de) * 1932-10-25 1935-02-26 Josef Graw Anordnung zur Ausuebung des Verfahrens zur Fernanzeige von Druck, Temperatur und Feuchtigkeit
US3489829A (en) * 1966-11-02 1970-01-13 Scovill Manufacturing Co Process of making and attaching snap fastener parts
DE2217218C2 (de) * 1972-04-10 1982-09-02 Siemens AG, 1000 Berlin und 8000 München Kontaktfedersatz für ein elektromagnetisches Karten-Relais in Flachbauweise und Verfahren zur Herstellung desselben
JPS5352612Y2 (fr) * 1974-12-09 1978-12-15
US4059897A (en) * 1975-09-15 1977-11-29 Robertshaw Controls Company Method of joining thin and thick switch members

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE619902C (de) * 1935-10-09 Const Electr De Delle Sa Atel Funkenentzieher fuer elektrische Stromunterbrecher
DE1067504B (de) * 1955-11-16 1959-10-22 Paul Dau & Co Appbau Verfahren zur Herstellung einer Nietverbindung zwischen einem metallischen Traeger elektrischer Kontaktstuecke und einem metallischen Geraeteteil
DE1081954B (de) * 1958-08-12 1960-05-19 Siemens Ag Schleifkontaktarm mit Sicherung gegen Kontaktueberbrueckung
DE1154557B (de) * 1962-05-09 1963-09-19 Telefunken Patent Kleinstschalter mit zwei jeweils mit einem Niet auf eine Isolierstoffplatte aufgenieteten Blechfahnen
DE1291833B (de) * 1966-07-19 1969-04-03 Siemens Ag Verfahren zur Herstellung einer Kontaktanordnung, insbesondere fuer Relais
GB1353090A (en) * 1971-11-19 1974-05-15 Plessey Co Ltd Manufacture of contact springset assemblies
DE2252263B2 (de) * 1972-10-25 1974-10-03 Brown, Boveri & Cie Ag, 6800 Mannheim Elektrischer Schalter, der durch einen von einem Steuerglied betätigten Steuernocken schaltbar ist
DE2306597B2 (de) * 1973-02-10 1975-06-26 Loewe Opta Gmbh, 1000 Berlin Druck tastenschalter
EP0030473A1 (fr) * 1979-12-10 1981-06-17 Fujitsu Limited Procédé pour la fabrication simultanée d'une pluralité de commutateurs à bouton-poussoir

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1286373A2 (fr) * 2001-08-23 2003-02-26 Alps Electric Co., Ltd. Interrupteur multiple
EP1286373A3 (fr) * 2001-08-23 2004-11-24 Alps Electric Co., Ltd. Interrupteur multiple

Also Published As

Publication number Publication date
US4653179A (en) 1987-03-31
EP0134422B1 (fr) 1988-01-20
IE841945L (en) 1985-01-28
JPH0250571B2 (fr) 1990-11-02
JPS60105120A (ja) 1985-06-10
IE55681B1 (en) 1990-12-19
EP0134422A3 (en) 1985-09-11
DE3327199C2 (de) 1986-05-07
DE3327199A1 (de) 1985-02-14

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